patch-2.4.3 linux/drivers/scsi/aic7xxx.c
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- Lines: 12243
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.2/linux/drivers/scsi/aic7xxx.c
- Orig date:
Wed Feb 21 18:20:32 2001
diff -u --recursive --new-file v2.4.2/linux/drivers/scsi/aic7xxx.c linux/drivers/scsi/aic7xxx.c
@@ -1,12242 +0,0 @@
-/*+M*************************************************************************
- * Adaptec AIC7xxx device driver for Linux.
- *
- * Copyright (c) 1994 John Aycock
- * The University of Calgary Department of Computer Science.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Sources include the Adaptec 1740 driver (aha1740.c), the Ultrastor 24F
- * driver (ultrastor.c), various Linux kernel source, the Adaptec EISA
- * config file (!adp7771.cfg), the Adaptec AHA-2740A Series User's Guide,
- * the Linux Kernel Hacker's Guide, Writing a SCSI Device Driver for Linux,
- * the Adaptec 1542 driver (aha1542.c), the Adaptec EISA overlay file
- * (adp7770.ovl), the Adaptec AHA-2740 Series Technical Reference Manual,
- * the Adaptec AIC-7770 Data Book, the ANSI SCSI specification, the
- * ANSI SCSI-2 specification (draft 10c), ...
- *
- * --------------------------------------------------------------------------
- *
- * Modifications by Daniel M. Eischen (deischen@iworks.InterWorks.org):
- *
- * Substantially modified to include support for wide and twin bus
- * adapters, DMAing of SCBs, tagged queueing, IRQ sharing, bug fixes,
- * SCB paging, and other rework of the code.
- *
- * Parts of this driver were also based on the FreeBSD driver by
- * Justin T. Gibbs. His copyright follows:
- *
- * --------------------------------------------------------------------------
- * Copyright (c) 1994-1997 Justin Gibbs.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification, immediately at the beginning of the file.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * Where this Software is combined with software released under the terms of
- * the GNU Public License ("GPL") and the terms of the GPL would require the
- * combined work to also be released under the terms of the GPL, the terms
- * and conditions of this License will apply in addition to those of the
- * GPL with the exception of any terms or conditions of this License that
- * conflict with, or are expressly prohibited by, the GPL.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $Id: aic7xxx.c,v 1.119 1997/06/27 19:39:18 gibbs Exp $
- *---------------------------------------------------------------------------
- *
- * Thanks also go to (in alphabetical order) the following:
- *
- * Rory Bolt - Sequencer bug fixes
- * Jay Estabrook - Initial DEC Alpha support
- * Doug Ledford - Much needed abort/reset bug fixes
- * Kai Makisara - DMAing of SCBs
- *
- * A Boot time option was also added for not resetting the scsi bus.
- *
- * Form: aic7xxx=extended
- * aic7xxx=no_reset
- * aic7xxx=ultra
- * aic7xxx=irq_trigger:[0,1] # 0 edge, 1 level
- * aic7xxx=verbose
- *
- * Daniel M. Eischen, deischen@iworks.InterWorks.org, 1/23/97
- *
- * $Id: aic7xxx.c,v 4.1 1997/06/12 08:23:42 deang Exp $
- *-M*************************************************************************/
-
-/*+M**************************************************************************
- *
- * Further driver modifications made by Doug Ledford <dledford@redhat.com>
- *
- * Copyright (c) 1997-1999 Doug Ledford
- *
- * These changes are released under the same licensing terms as the FreeBSD
- * driver written by Justin Gibbs. Please see his Copyright notice above
- * for the exact terms and conditions covering my changes as well as the
- * warranty statement.
- *
- * Modifications made to the aic7xxx.c,v 4.1 driver from Dan Eischen include
- * but are not limited to:
- *
- * 1: Import of the latest FreeBSD sequencer code for this driver
- * 2: Modification of kernel code to accomodate different sequencer semantics
- * 3: Extensive changes throughout kernel portion of driver to improve
- * abort/reset processing and error hanndling
- * 4: Other work contributed by various people on the Internet
- * 5: Changes to printk information and verbosity selection code
- * 6: General reliability related changes, especially in IRQ management
- * 7: Modifications to the default probe/attach order for supported cards
- * 8: SMP friendliness has been improved
- *
- * Overall, this driver represents a significant departure from the official
- * aic7xxx driver released by Dan Eischen in two ways. First, in the code
- * itself. A diff between the two version of the driver is now a several
- * thousand line diff. Second, in approach to solving the same problem. The
- * problem is importing the FreeBSD aic7xxx driver code to linux can be a
- * difficult and time consuming process, that also can be error prone. Dan
- * Eischen's official driver uses the approach that the linux and FreeBSD
- * drivers should be as identical as possible. To that end, his next version
- * of this driver will be using a mid-layer code library that he is developing
- * to moderate communications between the linux mid-level SCSI code and the
- * low level FreeBSD driver. He intends to be able to essentially drop the
- * FreeBSD driver into the linux kernel with only a few minor tweaks to some
- * include files and the like and get things working, making for fast easy
- * imports of the FreeBSD code into linux.
- *
- * I disagree with Dan's approach. Not that I don't think his way of doing
- * things would be nice, easy to maintain, and create a more uniform driver
- * between FreeBSD and Linux. I have no objection to those issues. My
- * disagreement is on the needed functionality. There simply are certain
- * things that are done differently in FreeBSD than linux that will cause
- * problems for this driver regardless of any middle ware Dan implements.
- * The biggest example of this at the moment is interrupt semantics. Linux
- * doesn't provide the same protection techniques as FreeBSD does, nor can
- * they be easily implemented in any middle ware code since they would truly
- * belong in the kernel proper and would effect all drivers. For the time
- * being, I see issues such as these as major stumbling blocks to the
- * reliability of code based upon such middle ware. Therefore, I choose to
- * use a different approach to importing the FreeBSD code that doesn't
- * involve any middle ware type code. My approach is to import the sequencer
- * code from FreeBSD wholesale. Then, to only make changes in the kernel
- * portion of the driver as they are needed for the new sequencer semantics.
- * In this way, the portion of the driver that speaks to the rest of the
- * linux kernel is fairly static and can be changed/modified to solve
- * any problems one might encounter without concern for the FreeBSD driver.
- *
- * Note: If time and experience should prove me wrong that the middle ware
- * code Dan writes is reliable in its operation, then I'll retract my above
- * statements. But, for those that don't know, I'm from Missouri (in the US)
- * and our state motto is "The Show-Me State". Well, before I will put
- * faith into it, you'll have to show me that it works :)
- *
- *_M*************************************************************************/
-
-/*
- * The next three defines are user configurable. These should be the only
- * defines a user might need to get in here and change. There are other
- * defines buried deeper in the code, but those really shouldn't need touched
- * under normal conditions.
- */
-
-/*
- * AIC7XXX_STRICT_PCI_SETUP
- * Should we assume the PCI config options on our controllers are set with
- * sane and proper values, or should we be anal about our PCI config
- * registers and force them to what we want? The main advantage to
- * defining this option is on non-Intel hardware where the BIOS may not
- * have been run to set things up, or if you have one of the BIOSless
- * Adaptec controllers, such as a 2910, that don't get set up by the
- * BIOS. However, keep in mind that we really do set the most important
- * items in the driver regardless of this setting, this only controls some
- * of the more esoteric PCI options on these cards. In that sense, I
- * would default to leaving this off. However, if people wish to try
- * things both ways, that would also help me to know if there are some
- * machines where it works one way but not another.
- *
- * -- July 7, 17:09
- * OK...I need this on my machine for testing, so the default is to
- * leave it defined.
- *
- * -- July 7, 18:49
- * I needed it for testing, but it didn't make any difference, so back
- * off she goes.
- *
- * -- July 16, 23:04
- * I turned it back on to try and compensate for the 2.1.x PCI code
- * which no longer relies solely on the BIOS and now tries to set
- * things itself.
- */
-
-#define AIC7XXX_STRICT_PCI_SETUP
-
-/*
- * AIC7XXX_VERBOSE_DEBUGGING
- * This option enables a lot of extra printk();s in the code, surrounded
- * by if (aic7xxx_verbose ...) statements. Executing all of those if
- * statements and the extra checks can get to where it actually does have
- * an impact on CPU usage and such, as well as code size. Disabling this
- * define will keep some of those from becoming part of the code.
- *
- * NOTE: Currently, this option has no real effect, I will be adding the
- * various #ifdef's in the code later when I've decided a section is
- * complete and no longer needs debugging. OK...a lot of things are now
- * surrounded by this define, so turning this off does have an impact.
- */
-
-/*
- * #define AIC7XXX_VERBOSE_DEBUGGING
- */
-
-#if defined(MODULE) || defined(PCMCIA)
-#include <linux/module.h>
-#endif
-
-#if defined(PCMCIA)
-# undef MODULE
-#endif
-
-#include <stdarg.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/byteorder.h>
-#include <linux/version.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/sched.h>
-#include <linux/pci.h>
-#include <linux/proc_fs.h>
-#include <linux/blk.h>
-#include <linux/tqueue.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/smp.h>
-#include "sd.h"
-#include "scsi.h"
-#include "hosts.h"
-#include "aic7xxx.h"
-
-#include "aic7xxx/sequencer.h"
-#include "aic7xxx/scsi_message.h"
-#include "aic7xxx_reg.h"
-#include <scsi/scsicam.h>
-
-#include <linux/stat.h>
-#include <linux/slab.h> /* for kmalloc() */
-
-#include <linux/config.h> /* for CONFIG_PCI */
-
-/*
- * To generate the correct addresses for the controller to issue
- * on the bus. Originally added for DEC Alpha support.
- */
-#define VIRT_TO_BUS(a) (unsigned int)virt_to_bus((void *)(a))
-
-#define AIC7XXX_C_VERSION "5.2.1"
-
-#define NUMBER(arr) (sizeof(arr) / sizeof(arr[0]))
-#define MIN(a,b) (((a) < (b)) ? (a) : (b))
-#define MAX(a,b) (((a) > (b)) ? (a) : (b))
-#define ALL_TARGETS -1
-#define ALL_CHANNELS -1
-#define ALL_LUNS -1
-#define MAX_TARGETS 16
-#define MAX_LUNS 8
-#ifndef TRUE
-# define TRUE 1
-#endif
-#ifndef FALSE
-# define FALSE 0
-#endif
-
-#if defined(__powerpc__) || defined(__i386__)
-# define MMAPIO
-#endif
-
-# if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
-# define cpuid smp_processor_id()
-# define DRIVER_LOCK_INIT \
- spin_lock_init(&p->spin_lock);
-# define DRIVER_LOCK \
- if(!p->cpu_lock_count[cpuid]) { \
- spin_lock_irqsave(&p->spin_lock, cpu_flags); \
- p->cpu_lock_count[cpuid]++; \
- } else { \
- p->cpu_lock_count[cpuid]++; \
- }
-# define DRIVER_UNLOCK \
- if(--p->cpu_lock_count[cpuid] == 0) \
- spin_unlock_irqrestore(&p->spin_lock, cpu_flags);
-# else
-# define DRIVER_LOCK_INIT
-# define DRIVER_LOCK
-# define DRIVER_UNLOCK
-# endif
-
-/*
- * You can try raising me if tagged queueing is enabled, or lowering
- * me if you only have 4 SCBs.
- */
-#ifdef CONFIG_AIC7XXX_CMDS_PER_DEVICE
-#define AIC7XXX_CMDS_PER_DEVICE CONFIG_AIC7XXX_CMDS_PER_DEVICE
-#else
-#define AIC7XXX_CMDS_PER_DEVICE 8
-#endif
-
-/*
- * Control collection of SCSI transfer statistics for the /proc filesystem.
- *
- * NOTE: Do NOT enable this when running on kernels version 1.2.x and below.
- * NOTE: This does affect performance since it has to maintain statistics.
- */
-#ifdef CONFIG_AIC7XXX_PROC_STATS
-#define AIC7XXX_PROC_STATS
-#endif
-
-/*
- * *** Determining commands per LUN ***
- *
- * When AIC7XXX_CMDS_PER_DEVICE is not defined, the driver will use its
- * own algorithm to determine the commands/LUN. If SCB paging is
- * enabled, which is always now, the default is 8 commands per lun
- * that indicates it supports tagged queueing. All non-tagged devices
- * use an internal queue depth of 3, with no more than one of those
- * three commands active at one time.
- */
-
-typedef struct
-{
- unsigned char tag_commands[16]; /* Allow for wide/twin adapters. */
-} adapter_tag_info_t;
-
-/*
- * Make a define that will tell the driver not to use tagged queueing
- * by default.
- */
-#ifdef CONFIG_AIC7XXX_TCQ_ON_BY_DEFAULT
-#define DEFAULT_TAG_COMMANDS {0, 0, 0, 0, 0, 0, 0, 0,\
- 0, 0, 0, 0, 0, 0, 0, 0}
-#else
-#define DEFAULT_TAG_COMMANDS {255, 255, 255, 255, 255, 255, 255, 255,\
- 255, 255, 255, 255, 255, 255, 255, 255}
-#endif
-
-/*
- * Modify this as you see fit for your system. By setting tag_commands
- * to 0, the driver will use it's own algorithm for determining the
- * number of commands to use (see above). When 255, the driver will
- * not enable tagged queueing for that particular device. When positive
- * (> 0) and (< 255) the values in the array are used for the queue_depth.
- * Note that the maximum value for an entry is 254, but you're insane if
- * you try to use that many commands on one device.
- *
- * In this example, the first line will disable tagged queueing for all
- * the devices on the first probed aic7xxx adapter.
- *
- * The second line enables tagged queueing with 4 commands/LUN for IDs
- * (1, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
- * driver to use its own algorithm for ID 1.
- *
- * The third line is the same as the first line.
- *
- * The fourth line disables tagged queueing for devices 0 and 3. It
- * enables tagged queueing for the other IDs, with 16 commands/LUN
- * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
- * IDs 2, 5-7, and 9-15.
- */
-
-/*
- * NOTE: The below structure is for reference only, the actual structure
- * to modify in order to change things is found after this fake one.
- *
-adapter_tag_info_t aic7xxx_tag_info[] =
-{
- {DEFAULT_TAG_COMMANDS},
- {{4, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 255, 4, 4, 4}},
- {DEFAULT_TAG_COMMANDS},
- {{255, 16, 4, 255, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
-};
-*/
-
-static adapter_tag_info_t aic7xxx_tag_info[] =
-{
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS},
- {DEFAULT_TAG_COMMANDS}
-};
-
-
-/*
- * Define an array of board names that can be indexed by aha_type.
- * Don't forget to change this when changing the types!
- */
-static const char *board_names[] = {
- "AIC-7xxx Unknown", /* AIC_NONE */
- "Adaptec AIC-7810 Hardware RAID Controller", /* AIC_7810 */
- "Adaptec AIC-7770 SCSI host adapter", /* AIC_7770 */
- "Adaptec AHA-274X SCSI host adapter", /* AIC_7771 */
- "Adaptec AHA-284X SCSI host adapter", /* AIC_284x */
- "Adaptec AIC-7850 SCSI host adapter", /* AIC_7850 */
- "Adaptec AIC-7855 SCSI host adapter", /* AIC_7855 */
- "Adaptec AIC-7860 Ultra SCSI host adapter", /* AIC_7860 */
- "Adaptec AHA-2940A Ultra SCSI host adapter", /* AIC_7861 */
- "Adaptec AIC-7870 SCSI host adapter", /* AIC_7870 */
- "Adaptec AHA-294X SCSI host adapter", /* AIC_7871 */
- "Adaptec AHA-394X SCSI host adapter", /* AIC_7872 */
- "Adaptec AHA-398X SCSI host adapter", /* AIC_7873 */
- "Adaptec AHA-2944 SCSI host adapter", /* AIC_7874 */
- "Adaptec AIC-7880 Ultra SCSI host adapter", /* AIC_7880 */
- "Adaptec AHA-294X Ultra SCSI host adapter", /* AIC_7881 */
- "Adaptec AHA-394X Ultra SCSI host adapter", /* AIC_7882 */
- "Adaptec AHA-398X Ultra SCSI host adapter", /* AIC_7883 */
- "Adaptec AHA-2944 Ultra SCSI host adapter", /* AIC_7884 */
- "Adaptec AHA-2940UW Pro Ultra SCSI host adapter", /* AIC_7887 */
- "Adaptec AIC-7895 Ultra SCSI host adapter", /* AIC_7895 */
- "Adaptec AIC-7890/1 Ultra2 SCSI host adapter", /* AIC_7890 */
- "Adaptec AHA-293X Ultra2 SCSI host adapter", /* AIC_7890 */
- "Adaptec AHA-294X Ultra2 SCSI host adapter", /* AIC_7890 */
- "Adaptec AIC-7896/7 Ultra2 SCSI host adapter", /* AIC_7896 */
- "Adaptec AHA-394X Ultra2 SCSI host adapter", /* AIC_7897 */
- "Adaptec AHA-395X Ultra2 SCSI host adapter", /* AIC_7897 */
- "Adaptec PCMCIA SCSI controller", /* card bus stuff */
- "Adaptec AIC-7892 Ultra 160/m SCSI host adapter", /* AIC_7892 */
- "Adaptec AIC-7899 Ultra 160/m SCSI host adapter", /* AIC_7899 */
-};
-
-/*
- * There should be a specific return value for this in scsi.h, but
- * it seems that most drivers ignore it.
- */
-#define DID_UNDERFLOW DID_ERROR
-
-/*
- * What we want to do is have the higher level scsi driver requeue
- * the command to us. There is no specific driver status for this
- * condition, but the higher level scsi driver will requeue the
- * command on a DID_BUS_BUSY error.
- *
- * Upon further inspection and testing, it seems that DID_BUS_BUSY
- * will *always* retry the command. We can get into an infinite loop
- * if this happens when we really want some sort of counter that
- * will automatically abort/reset the command after so many retries.
- * Using DID_ERROR will do just that. (Made by a suggestion by
- * Doug Ledford 8/1/96)
- */
-#define DID_RETRY_COMMAND DID_ERROR
-
-#define HSCSIID 0x07
-#define SCSI_RESET 0x040
-
-/*
- * EISA/VL-bus stuff
- */
-#define MINSLOT 1
-#define MAXSLOT 15
-#define SLOTBASE(x) ((x) << 12)
-#define BASE_TO_SLOT(x) ((x) >> 12)
-
-/*
- * Standard EISA Host ID regs (Offset from slot base)
- */
-#define AHC_HID0 0x80 /* 0,1: msb of ID2, 2-7: ID1 */
-#define AHC_HID1 0x81 /* 0-4: ID3, 5-7: LSB ID2 */
-#define AHC_HID2 0x82 /* product */
-#define AHC_HID3 0x83 /* firmware revision */
-
-/*
- * AIC-7770 I/O range to reserve for a card
- */
-#define MINREG 0xC00
-#define MAXREG 0xCFF
-
-#define INTDEF 0x5C /* Interrupt Definition Register */
-
-/*
- * AIC-78X0 PCI registers
- */
-#define CLASS_PROGIF_REVID 0x08
-#define DEVREVID 0x000000FFul
-#define PROGINFC 0x0000FF00ul
-#define SUBCLASS 0x00FF0000ul
-#define BASECLASS 0xFF000000ul
-
-#define CSIZE_LATTIME 0x0C
-#define CACHESIZE 0x0000003Ful /* only 5 bits */
-#define LATTIME 0x0000FF00ul
-
-#define DEVCONFIG 0x40
-#define SCBSIZE32 0x00010000ul /* aic789X only */
-#define MPORTMODE 0x00000400ul /* aic7870 only */
-#define RAMPSM 0x00000200ul /* aic7870 only */
-#define RAMPSM_ULTRA2 0x00000004
-#define VOLSENSE 0x00000100ul
-#define SCBRAMSEL 0x00000080ul
-#define SCBRAMSEL_ULTRA2 0x00000008
-#define MRDCEN 0x00000040ul
-#define EXTSCBTIME 0x00000020ul /* aic7870 only */
-#define EXTSCBPEN 0x00000010ul /* aic7870 only */
-#define BERREN 0x00000008ul
-#define DACEN 0x00000004ul
-#define STPWLEVEL 0x00000002ul
-#define DIFACTNEGEN 0x00000001ul /* aic7870 only */
-
-#define SCAMCTL 0x1a /* Ultra2 only */
-#define CCSCBBADDR 0xf0 /* aic7895/6/7 */
-
-/*
- * Define the different types of SEEPROMs on aic7xxx adapters
- * and make it also represent the address size used in accessing
- * its registers. The 93C46 chips have 1024 bits organized into
- * 64 16-bit words, while the 93C56 chips have 2048 bits organized
- * into 128 16-bit words. The C46 chips use 6 bits to address
- * each word, while the C56 and C66 (4096 bits) use 8 bits to
- * address each word.
- */
-typedef enum {C46 = 6, C56_66 = 8} seeprom_chip_type;
-
-/*
- *
- * Define the format of the SEEPROM registers (16 bits).
- *
- */
-struct seeprom_config {
-
-/*
- * SCSI ID Configuration Flags
- */
-#define CFXFER 0x0007 /* synchronous transfer rate */
-#define CFSYNCH 0x0008 /* enable synchronous transfer */
-#define CFDISC 0x0010 /* enable disconnection */
-#define CFWIDEB 0x0020 /* wide bus device (wide card) */
-#define CFSYNCHISULTRA 0x0040 /* CFSYNC is an ultra offset */
-#define CFNEWULTRAFORMAT 0x0080 /* Use the Ultra2 SEEPROM format */
-#define CFSTART 0x0100 /* send start unit SCSI command */
-#define CFINCBIOS 0x0200 /* include in BIOS scan */
-#define CFRNFOUND 0x0400 /* report even if not found */
-#define CFMULTILUN 0x0800 /* probe mult luns in BIOS scan */
-#define CFWBCACHEYES 0x4000 /* Enable W-Behind Cache on drive */
-#define CFWBCACHENC 0xc000 /* Don't change W-Behind Cache */
-/* UNUSED 0x3000 */
- unsigned short device_flags[16]; /* words 0-15 */
-
-/*
- * BIOS Control Bits
- */
-#define CFSUPREM 0x0001 /* support all removable drives */
-#define CFSUPREMB 0x0002 /* support removable drives for boot only */
-#define CFBIOSEN 0x0004 /* BIOS enabled */
-/* UNUSED 0x0008 */
-#define CFSM2DRV 0x0010 /* support more than two drives */
-#define CF284XEXTEND 0x0020 /* extended translation (284x cards) */
-/* UNUSED 0x0040 */
-#define CFEXTEND 0x0080 /* extended translation enabled */
-/* UNUSED 0xFF00 */
- unsigned short bios_control; /* word 16 */
-
-/*
- * Host Adapter Control Bits
- */
-#define CFAUTOTERM 0x0001 /* Perform Auto termination */
-#define CFULTRAEN 0x0002 /* Ultra SCSI speed enable (Ultra cards) */
-#define CF284XSELTO 0x0003 /* Selection timeout (284x cards) */
-#define CF284XFIFO 0x000C /* FIFO Threshold (284x cards) */
-#define CFSTERM 0x0004 /* SCSI low byte termination */
-#define CFWSTERM 0x0008 /* SCSI high byte termination (wide card) */
-#define CFSPARITY 0x0010 /* SCSI parity */
-#define CF284XSTERM 0x0020 /* SCSI low byte termination (284x cards) */
-#define CFRESETB 0x0040 /* reset SCSI bus at boot */
-#define CFBPRIMARY 0x0100 /* Channel B primary on 7895 chipsets */
-#define CFSEAUTOTERM 0x0400 /* aic7890 Perform SE Auto Term */
-#define CFLVDSTERM 0x0800 /* aic7890 LVD Termination */
-/* UNUSED 0xF280 */
- unsigned short adapter_control; /* word 17 */
-
-/*
- * Bus Release, Host Adapter ID
- */
-#define CFSCSIID 0x000F /* host adapter SCSI ID */
-/* UNUSED 0x00F0 */
-#define CFBRTIME 0xFF00 /* bus release time */
- unsigned short brtime_id; /* word 18 */
-
-/*
- * Maximum targets
- */
-#define CFMAXTARG 0x00FF /* maximum targets */
-/* UNUSED 0xFF00 */
- unsigned short max_targets; /* word 19 */
-
- unsigned short res_1[11]; /* words 20-30 */
- unsigned short checksum; /* word 31 */
-};
-
-#define SELBUS_MASK 0x0a
-#define SELNARROW 0x00
-#define SELBUSB 0x08
-#define SINGLE_BUS 0x00
-
-#define SCB_TARGET(scb) \
- (((scb)->hscb->target_channel_lun & TID) >> 4)
-#define SCB_LUN(scb) \
- ((scb)->hscb->target_channel_lun & LID)
-#define SCB_IS_SCSIBUS_B(scb) \
- (((scb)->hscb->target_channel_lun & SELBUSB) != 0)
-
-/*
- * If an error occurs during a data transfer phase, run the command
- * to completion - it's easier that way - making a note of the error
- * condition in this location. This then will modify a DID_OK status
- * into an appropriate error for the higher-level SCSI code.
- */
-#define aic7xxx_error(cmd) ((cmd)->SCp.Status)
-
-/*
- * Keep track of the targets returned status.
- */
-#define aic7xxx_status(cmd) ((cmd)->SCp.sent_command)
-
-/*
- * The position of the SCSI commands scb within the scb array.
- */
-#define aic7xxx_position(cmd) ((cmd)->SCp.have_data_in)
-
-/*
- * The stored DMA mapping for single-buffer data transfers.
- */
-#define aic7xxx_mapping(cmd) ((cmd)->SCp.phase)
-
-/*
- * So we can keep track of our host structs
- */
-static struct aic7xxx_host *first_aic7xxx = NULL;
-
-/*
- * As of Linux 2.1, the mid-level SCSI code uses virtual addresses
- * in the scatter-gather lists. We need to convert the virtual
- * addresses to physical addresses.
- */
-struct hw_scatterlist {
- unsigned int address;
- unsigned int length;
-};
-
-/*
- * Maximum number of SG segments these cards can support.
- */
-#define AIC7XXX_MAX_SG 128
-
-/*
- * The maximum number of SCBs we could have for ANY type
- * of card. DON'T FORGET TO CHANGE THE SCB MASK IN THE
- * SEQUENCER CODE IF THIS IS MODIFIED!
- */
-#define AIC7XXX_MAXSCB 255
-
-
-struct aic7xxx_hwscb {
-/* ------------ Begin hardware supported fields ---------------- */
-/* 0*/ unsigned char control;
-/* 1*/ unsigned char target_channel_lun; /* 4/1/3 bits */
-/* 2*/ unsigned char target_status;
-/* 3*/ unsigned char SG_segment_count;
-/* 4*/ unsigned int SG_list_pointer;
-/* 8*/ unsigned char residual_SG_segment_count;
-/* 9*/ unsigned char residual_data_count[3];
-/*12*/ unsigned int data_pointer;
-/*16*/ unsigned int data_count;
-/*20*/ unsigned int SCSI_cmd_pointer;
-/*24*/ unsigned char SCSI_cmd_length;
-/*25*/ unsigned char tag; /* Index into our kernel SCB array.
- * Also used as the tag for tagged I/O
- */
-#define SCB_PIO_TRANSFER_SIZE 26 /* amount we need to upload/download
- * via PIO to initialize a transaction.
- */
-/*26*/ unsigned char next; /* Used to thread SCBs awaiting selection
- * or disconnected down in the sequencer.
- */
-/*27*/ unsigned char prev;
-/*28*/ unsigned int pad; /*
- * Unused by the kernel, but we require
- * the padding so that the array of
- * hardware SCBs is alligned on 32 byte
- * boundaries so the sequencer can index
- */
-};
-
-typedef enum {
- SCB_FREE = 0x0000,
- SCB_WAITINGQ = 0x0002,
- SCB_ACTIVE = 0x0004,
- SCB_SENSE = 0x0008,
- SCB_ABORT = 0x0010,
- SCB_DEVICE_RESET = 0x0020,
- SCB_RESET = 0x0040,
- SCB_RECOVERY_SCB = 0x0080,
- SCB_MSGOUT_PPR = 0x0100,
- SCB_MSGOUT_SENT = 0x0200,
- SCB_MSGOUT_SDTR = 0x0400,
- SCB_MSGOUT_WDTR = 0x0800,
- SCB_MSGOUT_BITS = SCB_MSGOUT_PPR |
- SCB_MSGOUT_SENT |
- SCB_MSGOUT_SDTR |
- SCB_MSGOUT_WDTR,
- SCB_QUEUED_ABORT = 0x1000,
- SCB_QUEUED_FOR_DONE = 0x2000,
- SCB_WAS_BUSY = 0x4000
-} scb_flag_type;
-
-typedef enum {
- AHC_FNONE = 0x00000000,
- AHC_PAGESCBS = 0x00000001,
- AHC_CHANNEL_B_PRIMARY = 0x00000002,
- AHC_USEDEFAULTS = 0x00000004,
- AHC_INDIRECT_PAGING = 0x00000008,
- AHC_CHNLB = 0x00000020,
- AHC_CHNLC = 0x00000040,
- AHC_EXTEND_TRANS_A = 0x00000100,
- AHC_EXTEND_TRANS_B = 0x00000200,
- AHC_TERM_ENB_A = 0x00000400,
- AHC_TERM_ENB_SE_LOW = 0x00000400,
- AHC_TERM_ENB_B = 0x00000800,
- AHC_TERM_ENB_SE_HIGH = 0x00000800,
- AHC_HANDLING_REQINITS = 0x00001000,
- AHC_TARGETMODE = 0x00002000,
- AHC_NEWEEPROM_FMT = 0x00004000,
- /*
- * Here ends the FreeBSD defined flags and here begins the linux defined
- * flags. NOTE: I did not preserve the old flag name during this change
- * specifically to force me to evaluate what flags were being used properly
- * and what flags weren't. This way, I could clean up the flag usage on
- * a use by use basis. Doug Ledford
- */
- AHC_MOTHERBOARD = 0x00020000,
- AHC_NO_STPWEN = 0x00040000,
- AHC_RESET_DELAY = 0x00080000,
- AHC_A_SCANNED = 0x00100000,
- AHC_B_SCANNED = 0x00200000,
- AHC_MULTI_CHANNEL = 0x00400000,
- AHC_BIOS_ENABLED = 0x00800000,
- AHC_SEEPROM_FOUND = 0x01000000,
- AHC_TERM_ENB_LVD = 0x02000000,
- AHC_ABORT_PENDING = 0x04000000,
- AHC_RESET_PENDING = 0x08000000,
-#define AHC_IN_ISR_BIT 28
- AHC_IN_ISR = 0x10000000,
- AHC_IN_ABORT = 0x20000000,
- AHC_IN_RESET = 0x40000000,
- AHC_EXTERNAL_SRAM = 0x80000000
-} ahc_flag_type;
-
-typedef enum {
- AHC_NONE = 0x0000,
- AHC_CHIPID_MASK = 0x00ff,
- AHC_AIC7770 = 0x0001,
- AHC_AIC7850 = 0x0002,
- AHC_AIC7860 = 0x0003,
- AHC_AIC7870 = 0x0004,
- AHC_AIC7880 = 0x0005,
- AHC_AIC7890 = 0x0006,
- AHC_AIC7895 = 0x0007,
- AHC_AIC7896 = 0x0008,
- AHC_AIC7892 = 0x0009,
- AHC_AIC7899 = 0x000a,
- AHC_VL = 0x0100,
- AHC_EISA = 0x0200,
- AHC_PCI = 0x0400,
-} ahc_chip;
-
-typedef enum {
- AHC_FENONE = 0x0000,
- AHC_ULTRA = 0x0001,
- AHC_ULTRA2 = 0x0002,
- AHC_WIDE = 0x0004,
- AHC_TWIN = 0x0008,
- AHC_MORE_SRAM = 0x0010,
- AHC_CMD_CHAN = 0x0020,
- AHC_QUEUE_REGS = 0x0040,
- AHC_SG_PRELOAD = 0x0080,
- AHC_SPIOCAP = 0x0100,
- AHC_ULTRA3 = 0x0200,
- AHC_NEW_AUTOTERM = 0x0400,
- AHC_AIC7770_FE = AHC_FENONE,
- AHC_AIC7850_FE = AHC_SPIOCAP,
- AHC_AIC7860_FE = AHC_ULTRA|AHC_SPIOCAP,
- AHC_AIC7870_FE = AHC_FENONE,
- AHC_AIC7880_FE = AHC_ULTRA,
- AHC_AIC7890_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA2|
- AHC_QUEUE_REGS|AHC_SG_PRELOAD|AHC_NEW_AUTOTERM,
- AHC_AIC7895_FE = AHC_MORE_SRAM|AHC_CMD_CHAN|AHC_ULTRA,
- AHC_AIC7896_FE = AHC_AIC7890_FE,
- AHC_AIC7892_FE = AHC_AIC7890_FE|AHC_ULTRA3,
- AHC_AIC7899_FE = AHC_AIC7890_FE|AHC_ULTRA3,
-} ahc_feature;
-
-#define SCB_DMA_ADDR(scb, addr) ((unsigned long)(addr) + (scb)->scb_dma->dma_offset)
-
-struct aic7xxx_scb_dma {
- unsigned long dma_offset; /* Correction you have to add
- * to virtual address to get
- * dma handle in this region */
- dma_addr_t dma_address; /* DMA handle of the start,
- * for unmap */
- unsigned int dma_len; /* DMA length */
-};
-
-struct aic7xxx_scb {
- struct aic7xxx_hwscb *hscb; /* corresponding hardware scb */
- Scsi_Cmnd *cmd; /* Scsi_Cmnd for this scb */
- struct aic7xxx_scb *q_next; /* next scb in queue */
- volatile scb_flag_type flags; /* current state of scb */
- struct hw_scatterlist *sg_list; /* SG list in adapter format */
- unsigned char tag_action;
- unsigned char sg_count;
- unsigned char *sense_cmd; /*
- * Allocate 6 characters for
- * sense command.
- */
- unsigned char *cmnd;
- unsigned int sg_length; /* We init this during buildscb so we
- * don't have to calculate anything
- * during underflow/overflow/stat code
- */
- void *kmalloc_ptr;
- struct aic7xxx_scb_dma *scb_dma;
-};
-
-/*
- * Define a linked list of SCBs.
- */
-typedef struct {
- struct aic7xxx_scb *head;
- struct aic7xxx_scb *tail;
-} scb_queue_type;
-
-static struct {
- unsigned char errno;
- const char *errmesg;
-} hard_error[] = {
- { ILLHADDR, "Illegal Host Access" },
- { ILLSADDR, "Illegal Sequencer Address referenced" },
- { ILLOPCODE, "Illegal Opcode in sequencer program" },
- { SQPARERR, "Sequencer Ram Parity Error" },
- { DPARERR, "Data-Path Ram Parity Error" },
- { MPARERR, "Scratch Ram/SCB Array Ram Parity Error" },
- { PCIERRSTAT,"PCI Error detected" },
- { CIOPARERR, "CIOBUS Parity Error" }
-};
-
-static unsigned char
-generic_sense[] = { REQUEST_SENSE, 0, 0, 0, 255, 0 };
-
-typedef struct {
- scb_queue_type free_scbs; /*
- * SCBs assigned to free slot on
- * card (no paging required)
- */
- struct aic7xxx_scb *scb_array[AIC7XXX_MAXSCB];
- struct aic7xxx_hwscb *hscbs;
- unsigned char numscbs; /* current number of scbs */
- unsigned char maxhscbs; /* hardware scbs */
- unsigned char maxscbs; /* max scbs including pageable scbs */
- dma_addr_t hscbs_dma; /* DMA handle to hscbs */
- unsigned int hscbs_dma_len; /* length of the above DMA area */
- void *hscb_kmalloc_ptr;
-} scb_data_type;
-
-struct target_cmd {
- unsigned char mesg_bytes[4];
- unsigned char command[28];
-};
-
-#define AHC_TRANS_CUR 0x0001
-#define AHC_TRANS_ACTIVE 0x0002
-#define AHC_TRANS_GOAL 0x0004
-#define AHC_TRANS_USER 0x0008
-#define AHC_TRANS_QUITE 0x0010
-typedef struct {
- unsigned char cur_width;
- unsigned char goal_width;
- unsigned char cur_period;
- unsigned char goal_period;
- unsigned char cur_offset;
- unsigned char goal_offset;
- unsigned char cur_options;
- unsigned char goal_options;
- unsigned char user_width;
- unsigned char user_period;
- unsigned char user_offset;
- unsigned char user_options;
-} transinfo_type;
-
-/*
- * Define a structure used for each host adapter. Note, in order to avoid
- * problems with architectures I can't test on (because I don't have one,
- * such as the Alpha based systems) which happen to give faults for
- * non-aligned memory accesses, care was taken to align this structure
- * in a way that gauranteed all accesses larger than 8 bits were aligned
- * on the appropriate boundary. It's also organized to try and be more
- * cache line efficient. Be careful when changing this lest you might hurt
- * overall performance and bring down the wrath of the masses.
- */
-struct aic7xxx_host {
- /*
- * This is the first 64 bytes in the host struct
- */
-
- /*
- * We are grouping things here....first, items that get either read or
- * written with nearly every interrupt
- */
- volatile ahc_flag_type flags;
- ahc_feature features; /* chip features */
- unsigned long base; /* card base address */
- volatile unsigned char *maddr; /* memory mapped address */
- unsigned long isr_count; /* Interrupt count */
- unsigned long spurious_int;
- scb_data_type *scb_data;
- volatile unsigned short needdv;
- volatile unsigned short needppr;
- volatile unsigned short needsdtr;
- volatile unsigned short needwdtr;
- volatile unsigned short dtr_pending;
- struct aic7xxx_cmd_queue {
- Scsi_Cmnd *head;
- Scsi_Cmnd *tail;
- } completeq;
-
- /*
- * Things read/written on nearly every entry into aic7xxx_queue()
- */
- volatile scb_queue_type waiting_scbs;
- unsigned short discenable; /* Targets allowed to disconnect */
- unsigned short tagenable; /* Targets using tagged I/O */
- unsigned short orderedtag; /* Ordered Q tags allowed */
- unsigned char unpause; /* unpause value for HCNTRL */
- unsigned char pause; /* pause value for HCNTRL */
- volatile unsigned char qoutfifonext;
- volatile unsigned char activescbs; /* active scbs */
- volatile unsigned char max_activescbs;
- volatile unsigned char qinfifonext;
- volatile unsigned char *untagged_scbs;
- volatile unsigned char *qoutfifo;
- volatile unsigned char *qinfifo;
-
-#define DEVICE_PRESENT 0x01
-#define BUS_DEVICE_RESET_PENDING 0x02
-#define DEVICE_RESET_DELAY 0x04
-#define DEVICE_PRINT_DTR 0x08
-#define DEVICE_PARITY_ERROR 0x10
-#define DEVICE_WAS_BUSY 0x20
-#define DEVICE_SCSI_3 0x40
-#define DEVICE_SCANNED 0x80
- volatile unsigned char dev_flags[MAX_TARGETS];
- volatile unsigned char dev_active_cmds[MAX_TARGETS];
- volatile unsigned char dev_temp_queue_depth[MAX_TARGETS];
- unsigned char dev_commands_sent[MAX_TARGETS];
-
- unsigned int dev_timer_active; /* Which devs have a timer set */
- struct timer_list dev_timer;
- unsigned long dev_expires[MAX_TARGETS];
-
- spinlock_t spin_lock;
- volatile unsigned char cpu_lock_count[NR_CPUS];
-
- Scsi_Cmnd *dev_dtr_cmnd[MAX_TARGETS];
-
- unsigned int dev_checksum[MAX_TARGETS];
-
- unsigned char dev_last_queue_full[MAX_TARGETS];
- unsigned char dev_last_queue_full_count[MAX_TARGETS];
- unsigned char dev_max_queue_depth[MAX_TARGETS];
-
- volatile scb_queue_type delayed_scbs[MAX_TARGETS];
-
-
- unsigned char msg_buf[13]; /* The message for the target */
- unsigned char msg_type;
-#define MSG_TYPE_NONE 0x00
-#define MSG_TYPE_INITIATOR_MSGOUT 0x01
-#define MSG_TYPE_INITIATOR_MSGIN 0x02
- unsigned char msg_len; /* Length of message */
- unsigned char msg_index; /* Index into msg_buf array */
- transinfo_type transinfo[MAX_TARGETS];
-
-
- /*
- * We put the less frequently used host structure items after the more
- * frequently used items to try and ease the burden on the cache subsystem.
- * These entries are not *commonly* accessed, whereas the preceding entries
- * are accessed very often.
- */
-
- unsigned int irq; /* IRQ for this adapter */
- int instance; /* aic7xxx instance number */
- int scsi_id; /* host adapter SCSI ID */
- int scsi_id_b; /* channel B for twin adapters */
- unsigned int bios_address;
- int board_name_index;
- unsigned short needppr_copy; /* default config */
- unsigned short needsdtr_copy; /* default config */
- unsigned short needwdtr_copy; /* default config */
- unsigned short ultraenb; /* Ultra mode target list */
- unsigned short bios_control; /* bios control - SEEPROM */
- unsigned short adapter_control; /* adapter control - SEEPROM */
- struct pci_dev *pdev;
- unsigned char pci_bus;
- unsigned char pci_device_fn;
- struct seeprom_config sc;
- unsigned short sc_type;
- unsigned short sc_size;
- struct aic7xxx_host *next; /* allow for multiple IRQs */
- struct Scsi_Host *host; /* pointer to scsi host */
- int host_no; /* SCSI host number */
- unsigned long mbase; /* I/O memory address */
- ahc_chip chip; /* chip type */
- dma_addr_t fifo_dma; /* DMA handle for fifo arrays */
-
- /*
- * Statistics Kept:
- *
- * Total Xfers (count for each command that has a data xfer),
- * broken down further by reads && writes.
- *
- * Binned sizes, writes && reads:
- * < 512, 512, 1-2K, 2-4K, 4-8K, 8-16K, 16-32K, 32-64K, 64K-128K, > 128K
- *
- * Total amounts read/written above 512 bytes (amts under ignored)
- *
- * NOTE: Enabling this feature is likely to cause a noticeable performance
- * decrease as the accesses into the stats structures blows apart multiple
- * cache lines and is CPU time consuming.
- *
- * NOTE: Since it doesn't really buy us much, but consumes *tons* of RAM
- * and blows apart all sorts of cache lines, I modified this so that we
- * no longer look at the LUN. All LUNs now go into the same bin on each
- * device for stats purposes.
- */
- struct aic7xxx_xferstats {
- long w_total; /* total writes */
- long r_total; /* total reads */
-#ifdef AIC7XXX_PROC_STATS
- long w_bins[8]; /* binned write */
- long r_bins[8]; /* binned reads */
-#endif /* AIC7XXX_PROC_STATS */
- } stats[MAX_TARGETS]; /* [(channel << 3)|target] */
-
-#if 0
- struct target_cmd *targetcmds;
- unsigned int num_targetcmds;
-#endif
-
-};
-
-/*
- * Valid SCSIRATE values. (p. 3-17)
- * Provides a mapping of transfer periods in ns/4 to the proper value to
- * stick in the SCSIRATE reg to use that transfer rate.
- */
-#define AHC_SYNCRATE_ULTRA3 0
-#define AHC_SYNCRATE_ULTRA2 1
-#define AHC_SYNCRATE_ULTRA 3
-#define AHC_SYNCRATE_FAST 6
-#define AHC_SYNCRATE_CRC 0x40
-#define AHC_SYNCRATE_SE 0x10
-static struct aic7xxx_syncrate {
- /* Rates in Ultra mode have bit 8 of sxfr set */
-#define ULTRA_SXFR 0x100
- int sxfr_ultra2;
- int sxfr;
- unsigned char period;
- const char *rate[2];
-} aic7xxx_syncrates[] = {
- { 0x42, 0x000, 9, {"80.0", "160.0"} },
- { 0x13, 0x000, 10, {"40.0", "80.0"} },
- { 0x14, 0x000, 11, {"33.0", "66.6"} },
- { 0x15, 0x100, 12, {"20.0", "40.0"} },
- { 0x16, 0x110, 15, {"16.0", "32.0"} },
- { 0x17, 0x120, 18, {"13.4", "26.8"} },
- { 0x18, 0x000, 25, {"10.0", "20.0"} },
- { 0x19, 0x010, 31, {"8.0", "16.0"} },
- { 0x1a, 0x020, 37, {"6.67", "13.3"} },
- { 0x1b, 0x030, 43, {"5.7", "11.4"} },
- { 0x10, 0x040, 50, {"5.0", "10.0"} },
- { 0x00, 0x050, 56, {"4.4", "8.8" } },
- { 0x00, 0x060, 62, {"4.0", "8.0" } },
- { 0x00, 0x070, 68, {"3.6", "7.2" } },
- { 0x00, 0x000, 0, {NULL, NULL} },
-};
-
-#define CTL_OF_SCB(scb) (((scb->hscb)->target_channel_lun >> 3) & 0x1), \
- (((scb->hscb)->target_channel_lun >> 4) & 0xf), \
- ((scb->hscb)->target_channel_lun & 0x07)
-
-#define CTL_OF_CMD(cmd) ((cmd->channel) & 0x01), \
- ((cmd->target) & 0x0f), \
- ((cmd->lun) & 0x07)
-
-#define TARGET_INDEX(cmd) ((cmd)->target | ((cmd)->channel << 3))
-
-/*
- * A nice little define to make doing our printks a little easier
- */
-
-#define WARN_LEAD KERN_WARNING "(scsi%d:%d:%d:%d) "
-#define INFO_LEAD KERN_INFO "(scsi%d:%d:%d:%d) "
-
-/*
- * XXX - these options apply unilaterally to _all_ 274x/284x/294x
- * cards in the system. This should be fixed. Exceptions to this
- * rule are noted in the comments.
- */
-
-
-/*
- * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
- * has no effect on any later resets that might occur due to things like
- * SCSI bus timeouts.
- */
-static unsigned int aic7xxx_no_reset = 0;
-/*
- * Certain PCI motherboards will scan PCI devices from highest to lowest,
- * others scan from lowest to highest, and they tend to do all kinds of
- * strange things when they come into contact with PCI bridge chips. The
- * net result of all this is that the PCI card that is actually used to boot
- * the machine is very hard to detect. Most motherboards go from lowest
- * PCI slot number to highest, and the first SCSI controller found is the
- * one you boot from. The only exceptions to this are when a controller
- * has its BIOS disabled. So, we by default sort all of our SCSI controllers
- * from lowest PCI slot number to highest PCI slot number. We also force
- * all controllers with their BIOS disabled to the end of the list. This
- * works on *almost* all computers. Where it doesn't work, we have this
- * option. Setting this option to non-0 will reverse the order of the sort
- * to highest first, then lowest, but will still leave cards with their BIOS
- * disabled at the very end. That should fix everyone up unless there are
- * really strange cirumstances.
- */
-static int aic7xxx_reverse_scan = 0;
-/*
- * Should we force EXTENDED translation on a controller.
- * 0 == Use whatever is in the SEEPROM or default to off
- * 1 == Use whatever is in the SEEPROM or default to on
- */
-static unsigned int aic7xxx_extended = 0;
-/*
- * The IRQ trigger method used on EISA controllers. Does not effect PCI cards.
- * -1 = Use detected settings.
- * 0 = Force Edge triggered mode.
- * 1 = Force Level triggered mode.
- */
-static int aic7xxx_irq_trigger = -1;
-/*
- * This variable is used to override the termination settings on a controller.
- * This should not be used under normal conditions. However, in the case
- * that a controller does not have a readable SEEPROM (so that we can't
- * read the SEEPROM settings directly) and that a controller has a buggered
- * version of the cable detection logic, this can be used to force the
- * correct termination. It is preferable to use the manual termination
- * settings in the BIOS if possible, but some motherboard controllers store
- * those settings in a format we can't read. In other cases, auto term
- * should also work, but the chipset was put together with no auto term
- * logic (common on motherboard controllers). In those cases, we have
- * 32 bits here to work with. That's good for 8 controllers/channels. The
- * bits are organized as 4 bits per channel, with scsi0 getting the lowest
- * 4 bits in the int. A 1 in a bit position indicates the termination setting
- * that corresponds to that bit should be enabled, a 0 is disabled.
- * It looks something like this:
- *
- * 0x0f = 1111-Single Ended Low Byte Termination on/off
- * ||\-Single Ended High Byte Termination on/off
- * |\-LVD Low Byte Termination on/off
- * \-LVD High Byte Termination on/off
- *
- * For non-Ultra2 controllers, the upper 2 bits are not important. So, to
- * enable both high byte and low byte termination on scsi0, I would need to
- * make sure that the override_term variable was set to 0x03 (bits 0011).
- * To make sure that all termination is enabled on an Ultra2 controller at
- * scsi2 and only high byte termination on scsi1 and high and low byte
- * termination on scsi0, I would set override_term=0xf23 (bits 1111 0010 0011)
- *
- * For the most part, users should never have to use this, that's why I
- * left it fairly cryptic instead of easy to understand. If you need it,
- * most likely someone will be telling you what your's needs to be set to.
- */
-static int aic7xxx_override_term = -1;
-/*
- * Certain motherboard chipset controllers tend to screw
- * up the polarity of the term enable output pin. Use this variable
- * to force the correct polarity for your system. This is a bitfield variable
- * similar to the previous one, but this one has one bit per channel instead
- * of four.
- * 0 = Force the setting to active low.
- * 1 = Force setting to active high.
- * Most Adaptec cards are active high, several motherboards are active low.
- * To force a 2940 card at SCSI 0 to active high and a motherboard 7895
- * controller at scsi1 and scsi2 to active low, and a 2910 card at scsi3
- * to active high, you would need to set stpwlev=0x9 (bits 1001).
- *
- * People shouldn't need to use this, but if you are experiencing lots of
- * SCSI timeout problems, this may help. There is one sure way to test what
- * this option needs to be. Using a boot floppy to boot the system, configure
- * your system to enable all SCSI termination (in the Adaptec SCSI BIOS) and
- * if needed then also pass a value to override_term to make sure that the
- * driver is enabling SCSI termination, then set this variable to either 0
- * or 1. When the driver boots, make sure there are *NO* SCSI cables
- * connected to your controller. If it finds and inits the controller
- * without problem, then the setting you passed to stpwlev was correct. If
- * the driver goes into a reset loop and hangs the system, then you need the
- * other setting for this variable. If neither setting lets the machine
- * boot then you have definite termination problems that may not be fixable.
- */
-static int aic7xxx_stpwlev = -1;
-/*
- * Set this to non-0 in order to force the driver to panic the kernel
- * and print out debugging info on a SCSI abort or reset cycle.
- */
-static int aic7xxx_panic_on_abort = 0;
-/*
- * PCI bus parity checking of the Adaptec controllers. This is somewhat
- * dubious at best. To my knowledge, this option has never actually
- * solved a PCI parity problem, but on certain machines with broken PCI
- * chipset configurations, it can generate tons of false error messages.
- * It's included in the driver for completeness.
- * 0 = Shut off PCI parity check
- * -1 = Normal polarity pci parity checking
- * 1 = reverse polarity pci parity checking
- *
- * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
- * variable to -1 you would actually want to simply pass the variable
- * name without a number. That will invert the 0 which will result in
- * -1.
- */
-static int aic7xxx_pci_parity = 0;
-/*
- * Set this to any non-0 value to cause us to dump the contents of all
- * the card's registers in a hex dump format tailored to each model of
- * controller.
- *
- * NOTE: THE CONTROLLER IS LEFT IN AN UNUSEABLE STATE BY THIS OPTION.
- * YOU CANNOT BOOT UP WITH THIS OPTION, IT IS FOR DEBUGGING PURPOSES
- * ONLY
- */
-static int aic7xxx_dump_card = 0;
-/*
- * Set this to a non-0 value to make us dump out the 32 bit instruction
- * registers on the card after completing the sequencer download. This
- * allows the actual sequencer download to be verified. It is possible
- * to use this option and still boot up and run your system. This is
- * only intended for debugging purposes.
- */
-static int aic7xxx_dump_sequencer = 0;
-/*
- * Certain newer motherboards have put new PCI based devices into the
- * IO spaces that used to typically be occupied by VLB or EISA cards.
- * This overlap can cause these newer motherboards to lock up when scanned
- * for older EISA and VLB devices. Setting this option to non-0 will
- * cause the driver to skip scanning for any VLB or EISA controllers and
- * only support the PCI controllers. NOTE: this means that if the kernel
- * os compiled with PCI support disabled, then setting this to non-0
- * would result in never finding any devices :)
- */
-static int aic7xxx_no_probe = 0;
-/*
- * On some machines, enabling the external SCB RAM isn't reliable yet. I
- * haven't had time to make test patches for things like changing the
- * timing mode on that external RAM either. Some of those changes may
- * fix the problem. Until then though, we default to external SCB RAM
- * off and give a command line option to enable it.
- */
-static int aic7xxx_scbram = 0;
-/*
- * So that we can set how long each device is given as a selection timeout.
- * The table of values goes like this:
- * 0 - 256ms
- * 1 - 128ms
- * 2 - 64ms
- * 3 - 32ms
- * We default to 64ms because it's fast. Some old SCSI-I devices need a
- * longer time. The final value has to be left shifted by 3, hence 0x10
- * is the final value.
- */
-static int aic7xxx_seltime = 0x10;
-/*
- * So that insmod can find the variable and make it point to something
- */
-#ifdef MODULE
-static char * aic7xxx = NULL;
-MODULE_PARM(aic7xxx, "s");
-
-/*
- * Just in case someone uses commas to separate items on the insmod
- * command line, we define a dummy buffer here to avoid having insmod
- * write wild stuff into our code segment
- */
-static char dummy_buffer[60] = "Please don't trounce on me insmod!!\n";
-
-#endif
-
-#define VERBOSE_NORMAL 0x0000
-#define VERBOSE_NEGOTIATION 0x0001
-#define VERBOSE_SEQINT 0x0002
-#define VERBOSE_SCSIINT 0x0004
-#define VERBOSE_PROBE 0x0008
-#define VERBOSE_PROBE2 0x0010
-#define VERBOSE_NEGOTIATION2 0x0020
-#define VERBOSE_MINOR_ERROR 0x0040
-#define VERBOSE_TRACING 0x0080
-#define VERBOSE_ABORT 0x0f00
-#define VERBOSE_ABORT_MID 0x0100
-#define VERBOSE_ABORT_FIND 0x0200
-#define VERBOSE_ABORT_PROCESS 0x0400
-#define VERBOSE_ABORT_RETURN 0x0800
-#define VERBOSE_RESET 0xf000
-#define VERBOSE_RESET_MID 0x1000
-#define VERBOSE_RESET_FIND 0x2000
-#define VERBOSE_RESET_PROCESS 0x4000
-#define VERBOSE_RESET_RETURN 0x8000
-static int aic7xxx_verbose = VERBOSE_NORMAL | VERBOSE_NEGOTIATION |
- VERBOSE_PROBE; /* verbose messages */
-
-
-/****************************************************************************
- *
- * We're going to start putting in function declarations so that order of
- * functions is no longer important. As needed, they are added here.
- *
- ***************************************************************************/
-
-static void aic7xxx_panic_abort(struct aic7xxx_host *p, Scsi_Cmnd *cmd);
-static void aic7xxx_print_card(struct aic7xxx_host *p);
-static void aic7xxx_print_scratch_ram(struct aic7xxx_host *p);
-static void aic7xxx_print_sequencer(struct aic7xxx_host *p, int downloaded);
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
-static void aic7xxx_check_scbs(struct aic7xxx_host *p, char *buffer);
-#endif
-
-/****************************************************************************
- *
- * These functions are now used. They happen to be wrapped in useless
- * inb/outb port read/writes around the real reads and writes because it
- * seems that certain very fast CPUs have a problem dealing with us when
- * going at full speed.
- *
- ***************************************************************************/
-
-static inline unsigned char
-aic_inb(struct aic7xxx_host *p, long port)
-{
-#ifdef MMAPIO
- unsigned char x;
- if(p->maddr)
- {
- x = readb(p->maddr + port);
- }
- else
- {
- x = inb(p->base + port);
- }
- return(x);
-#else
- return(inb(p->base + port));
-#endif
-}
-
-static inline void
-aic_outb(struct aic7xxx_host *p, unsigned char val, long port)
-{
-#ifdef MMAPIO
- if(p->maddr)
- {
- writeb(val, p->maddr + port);
- mb(); /* locked operation in order to force CPU ordering */
- readb(p->maddr + HCNTRL); /* dummy read to flush the PCI write */
- }
- else
- {
- outb(val, p->base + port);
- mb(); /* locked operation in order to force CPU ordering */
- }
-#else
- outb(val, p->base + port);
- mb(); /* locked operation in order to force CPU ordering */
-#endif
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_setup
- *
- * Description:
- * Handle Linux boot parameters. This routine allows for assigning a value
- * to a parameter with a ':' between the parameter and the value.
- * ie. aic7xxx=unpause:0x0A,extended
- *-F*************************************************************************/
-static int
-aic7xxx_setup(char *s)
-{
- int i, n;
- char *p;
- char *end;
-
- static struct {
- const char *name;
- unsigned int *flag;
- } options[] = {
- { "extended", &aic7xxx_extended },
- { "no_reset", &aic7xxx_no_reset },
- { "irq_trigger", &aic7xxx_irq_trigger },
- { "verbose", &aic7xxx_verbose },
- { "reverse_scan",&aic7xxx_reverse_scan },
- { "override_term", &aic7xxx_override_term },
- { "stpwlev", &aic7xxx_stpwlev },
- { "no_probe", &aic7xxx_no_probe },
- { "panic_on_abort", &aic7xxx_panic_on_abort },
- { "pci_parity", &aic7xxx_pci_parity },
- { "dump_card", &aic7xxx_dump_card },
- { "dump_sequencer", &aic7xxx_dump_sequencer },
- { "scbram", &aic7xxx_scbram },
- { "seltime", &aic7xxx_seltime },
- { "tag_info", NULL }
- };
-
- end = strchr(s, '\0');
-
- for (p = strtok(s, ",."); p; p = strtok(NULL, ",."))
- {
- for (i = 0; i < NUMBER(options); i++)
- {
- n = strlen(options[i].name);
- if (!strncmp(options[i].name, p, n))
- {
- if (!strncmp(p, "tag_info", n))
- {
- if (p[n] == ':')
- {
- char *base;
- char *tok, *tok_end, *tok_end2;
- char tok_list[] = { '.', ',', '{', '}', '\0' };
- int i, instance = -1, device = -1;
- unsigned char done = FALSE;
-
- base = p;
- tok = base + n + 1; /* Forward us just past the ':' */
- tok_end = strchr(tok, '\0');
- if (tok_end < end)
- *tok_end = ',';
- while(!done)
- {
- switch(*tok)
- {
- case '{':
- if (instance == -1)
- instance = 0;
- else if (device == -1)
- device = 0;
- tok++;
- break;
- case '}':
- if (device != -1)
- device = -1;
- else if (instance != -1)
- instance = -1;
- tok++;
- break;
- case ',':
- case '.':
- if (instance == -1)
- done = TRUE;
- else if (device >= 0)
- device++;
- else if (instance >= 0)
- instance++;
- if ( (device >= MAX_TARGETS) ||
- (instance >= NUMBER(aic7xxx_tag_info)) )
- done = TRUE;
- tok++;
- if (!done)
- {
- base = tok;
- }
- break;
- case '\0':
- done = TRUE;
- break;
- default:
- done = TRUE;
- tok_end = strchr(tok, '\0');
- for(i=0; tok_list[i]; i++)
- {
- tok_end2 = strchr(tok, tok_list[i]);
- if ( (tok_end2) && (tok_end2 < tok_end) )
- {
- tok_end = tok_end2;
- done = FALSE;
- }
- }
- if ( (instance >= 0) && (device >= 0) &&
- (instance < NUMBER(aic7xxx_tag_info)) &&
- (device < MAX_TARGETS) )
- aic7xxx_tag_info[instance].tag_commands[device] =
- simple_strtoul(tok, NULL, 0) & 0xff;
- tok = tok_end;
- break;
- }
- }
- while((p != base) && (p != NULL))
- p = strtok(NULL, ",.");
- }
- }
- else if (p[n] == ':')
- {
- *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
- if(!strncmp(p, "seltime", n))
- {
- *(options[i].flag) = (*(options[i].flag) % 4) << 3;
- }
- }
- else if (!strncmp(p, "verbose", n))
- {
- *(options[i].flag) = 0xff29;
- }
- else
- {
- *(options[i].flag) = ~(*(options[i].flag));
- if(!strncmp(p, "seltime", n))
- {
- *(options[i].flag) = (*(options[i].flag) % 4) << 3;
- }
- }
- }
- }
- }
- return 1;
-}
-
-__setup("aic7xxx=", aic7xxx_setup);
-
-/*+F*************************************************************************
- * Function:
- * pause_sequencer
- *
- * Description:
- * Pause the sequencer and wait for it to actually stop - this
- * is important since the sequencer can disable pausing for critical
- * sections.
- *-F*************************************************************************/
-static void
-pause_sequencer(struct aic7xxx_host *p)
-{
- aic_outb(p, p->pause, HCNTRL);
- while ((aic_inb(p, HCNTRL) & PAUSE) == 0)
- {
- ;
- }
- if(p->features & AHC_ULTRA2)
- {
- aic_inb(p, CCSCBCTL);
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * unpause_sequencer
- *
- * Description:
- * Unpause the sequencer. Unremarkable, yet done often enough to
- * warrant an easy way to do it.
- *-F*************************************************************************/
-static void
-unpause_sequencer(struct aic7xxx_host *p, int unpause_always)
-{
- if (unpause_always ||
- ( !(aic_inb(p, INTSTAT) & (SCSIINT | SEQINT | BRKADRINT)) &&
- !(p->flags & AHC_HANDLING_REQINITS) ) )
- {
- aic_outb(p, p->unpause, HCNTRL);
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * restart_sequencer
- *
- * Description:
- * Restart the sequencer program from address zero. This assumes
- * that the sequencer is already paused.
- *-F*************************************************************************/
-static void
-restart_sequencer(struct aic7xxx_host *p)
-{
- aic_outb(p, 0, SEQADDR0);
- aic_outb(p, 0, SEQADDR1);
- aic_outb(p, FASTMODE, SEQCTL);
-}
-
-/*
- * We include the aic7xxx_seq.c file here so that the other defines have
- * already been made, and so that it comes before the code that actually
- * downloads the instructions (since we don't typically use function
- * prototype, our code has to be ordered that way, it's a left-over from
- * the original driver days.....I should fix it some time DL).
- */
-#include "aic7xxx_seq.c"
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_check_patch
- *
- * Description:
- * See if the next patch to download should be downloaded.
- *-F*************************************************************************/
-static int
-aic7xxx_check_patch(struct aic7xxx_host *p,
- struct sequencer_patch **start_patch, int start_instr, int *skip_addr)
-{
- struct sequencer_patch *cur_patch;
- struct sequencer_patch *last_patch;
- int num_patches;
-
- num_patches = sizeof(sequencer_patches)/sizeof(struct sequencer_patch);
- last_patch = &sequencer_patches[num_patches];
- cur_patch = *start_patch;
-
- while ((cur_patch < last_patch) && (start_instr == cur_patch->begin))
- {
- if (cur_patch->patch_func(p) == 0)
- {
- /*
- * Start rejecting code.
- */
- *skip_addr = start_instr + cur_patch->skip_instr;
- cur_patch += cur_patch->skip_patch;
- }
- else
- {
- /*
- * Found an OK patch. Advance the patch pointer to the next patch
- * and wait for our instruction pointer to get here.
- */
- cur_patch++;
- }
- }
-
- *start_patch = cur_patch;
- if (start_instr < *skip_addr)
- /*
- * Still skipping
- */
- return (0);
- return(1);
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_download_instr
- *
- * Description:
- * Find the next patch to download.
- *-F*************************************************************************/
-static void
-aic7xxx_download_instr(struct aic7xxx_host *p, int instrptr,
- unsigned char *dconsts)
-{
- union ins_formats instr;
- struct ins_format1 *fmt1_ins;
- struct ins_format3 *fmt3_ins;
- unsigned char opcode;
-
- instr = *(union ins_formats*) &seqprog[instrptr * 4];
-
- instr.integer = le32_to_cpu(instr.integer);
-
- fmt1_ins = &instr.format1;
- fmt3_ins = NULL;
-
- /* Pull the opcode */
- opcode = instr.format1.opcode;
- switch (opcode)
- {
- case AIC_OP_JMP:
- case AIC_OP_JC:
- case AIC_OP_JNC:
- case AIC_OP_CALL:
- case AIC_OP_JNE:
- case AIC_OP_JNZ:
- case AIC_OP_JE:
- case AIC_OP_JZ:
- {
- struct sequencer_patch *cur_patch;
- int address_offset;
- unsigned int address;
- int skip_addr;
- int i;
-
- fmt3_ins = &instr.format3;
- address_offset = 0;
- address = fmt3_ins->address;
- cur_patch = sequencer_patches;
- skip_addr = 0;
-
- for (i = 0; i < address;)
- {
- aic7xxx_check_patch(p, &cur_patch, i, &skip_addr);
- if (skip_addr > i)
- {
- int end_addr;
-
- end_addr = MIN(address, skip_addr);
- address_offset += end_addr - i;
- i = skip_addr;
- }
- else
- {
- i++;
- }
- }
- address -= address_offset;
- fmt3_ins->address = address;
- /* Fall Through to the next code section */
- }
- case AIC_OP_OR:
- case AIC_OP_AND:
- case AIC_OP_XOR:
- case AIC_OP_ADD:
- case AIC_OP_ADC:
- case AIC_OP_BMOV:
- if (fmt1_ins->parity != 0)
- {
- fmt1_ins->immediate = dconsts[fmt1_ins->immediate];
- }
- fmt1_ins->parity = 0;
- /* Fall Through to the next code section */
- case AIC_OP_ROL:
- if ((p->features & AHC_ULTRA2) != 0)
- {
- int i, count;
-
- /* Calculate odd parity for the instruction */
- for ( i=0, count=0; i < 31; i++)
- {
- unsigned int mask;
-
- mask = 0x01 << i;
- if ((instr.integer & mask) != 0)
- count++;
- }
- if (!(count & 0x01))
- instr.format1.parity = 1;
- }
- else
- {
- if (fmt3_ins != NULL)
- {
- instr.integer = fmt3_ins->immediate |
- (fmt3_ins->source << 8) |
- (fmt3_ins->address << 16) |
- (fmt3_ins->opcode << 25);
- }
- else
- {
- instr.integer = fmt1_ins->immediate |
- (fmt1_ins->source << 8) |
- (fmt1_ins->destination << 16) |
- (fmt1_ins->ret << 24) |
- (fmt1_ins->opcode << 25);
- }
- }
- aic_outb(p, (instr.integer & 0xff), SEQRAM);
- aic_outb(p, ((instr.integer >> 8) & 0xff), SEQRAM);
- aic_outb(p, ((instr.integer >> 16) & 0xff), SEQRAM);
- aic_outb(p, ((instr.integer >> 24) & 0xff), SEQRAM);
- udelay(10);
- break;
-
- default:
- panic("aic7xxx: Unknown opcode encountered in sequencer program.");
- break;
- }
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_loadseq
- *
- * Description:
- * Load the sequencer code into the controller memory.
- *-F*************************************************************************/
-static void
-aic7xxx_loadseq(struct aic7xxx_host *p)
-{
- struct sequencer_patch *cur_patch;
- int i;
- int downloaded;
- int skip_addr;
- unsigned char download_consts[4] = {0, 0, 0, 0};
-
- if (aic7xxx_verbose & VERBOSE_PROBE)
- {
- printk(KERN_INFO "(scsi%d) Downloading sequencer code...", p->host_no);
- }
-#if 0
- download_consts[TMODE_NUMCMDS] = p->num_targetcmds;
-#endif
- download_consts[TMODE_NUMCMDS] = 0;
- cur_patch = &sequencer_patches[0];
- downloaded = 0;
- skip_addr = 0;
-
- aic_outb(p, PERRORDIS|LOADRAM|FAILDIS|FASTMODE, SEQCTL);
- aic_outb(p, 0, SEQADDR0);
- aic_outb(p, 0, SEQADDR1);
-
- for (i = 0; i < sizeof(seqprog) / 4; i++)
- {
- if (aic7xxx_check_patch(p, &cur_patch, i, &skip_addr) == 0)
- {
- /* Skip this instruction for this configuration. */
- continue;
- }
- aic7xxx_download_instr(p, i, &download_consts[0]);
- downloaded++;
- }
-
- aic_outb(p, 0, SEQADDR0);
- aic_outb(p, 0, SEQADDR1);
- aic_outb(p, FASTMODE | FAILDIS, SEQCTL);
- unpause_sequencer(p, TRUE);
- mdelay(1);
- pause_sequencer(p);
- aic_outb(p, FASTMODE, SEQCTL);
- if (aic7xxx_verbose & VERBOSE_PROBE)
- {
- printk(" %d instructions downloaded\n", downloaded);
- }
- if (aic7xxx_dump_sequencer)
- aic7xxx_print_sequencer(p, downloaded);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_print_sequencer
- *
- * Description:
- * Print the contents of the sequencer memory to the screen.
- *-F*************************************************************************/
-static void
-aic7xxx_print_sequencer(struct aic7xxx_host *p, int downloaded)
-{
- int i, k, temp;
-
- aic_outb(p, PERRORDIS|LOADRAM|FAILDIS|FASTMODE, SEQCTL);
- aic_outb(p, 0, SEQADDR0);
- aic_outb(p, 0, SEQADDR1);
-
- k = 0;
- for (i=0; i < downloaded; i++)
- {
- if ( k == 0 )
- printk("%03x: ", i);
- temp = aic_inb(p, SEQRAM);
- temp |= (aic_inb(p, SEQRAM) << 8);
- temp |= (aic_inb(p, SEQRAM) << 16);
- temp |= (aic_inb(p, SEQRAM) << 24);
- printk("%08x", temp);
- if ( ++k == 8 )
- {
- printk("\n");
- k = 0;
- }
- else
- printk(" ");
- }
- aic_outb(p, 0, SEQADDR0);
- aic_outb(p, 0, SEQADDR1);
- aic_outb(p, FASTMODE | FAILDIS, SEQCTL);
- unpause_sequencer(p, TRUE);
- mdelay(1);
- pause_sequencer(p);
- aic_outb(p, FASTMODE, SEQCTL);
- printk("\n");
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_info
- *
- * Description:
- * Return a string describing the driver.
- *-F*************************************************************************/
-const char *
-aic7xxx_info(struct Scsi_Host *dooh)
-{
- static char buffer[256];
- char *bp;
- struct aic7xxx_host *p;
-
- bp = &buffer[0];
- p = (struct aic7xxx_host *)dooh->hostdata;
- memset(bp, 0, sizeof(buffer));
- strcpy(bp, "Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) ");
- strcat(bp, AIC7XXX_C_VERSION);
- strcat(bp, "/");
- strcat(bp, AIC7XXX_H_VERSION);
- strcat(bp, "\n");
- strcat(bp, " <");
- strcat(bp, board_names[p->board_name_index]);
- strcat(bp, ">");
-
- return(bp);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_find_syncrate
- *
- * Description:
- * Look up the valid period to SCSIRATE conversion in our table
- *-F*************************************************************************/
-static struct aic7xxx_syncrate *
-aic7xxx_find_syncrate(struct aic7xxx_host *p, unsigned int *period,
- unsigned int maxsync, unsigned char *options)
-{
- struct aic7xxx_syncrate *syncrate;
- int done = FALSE;
-
- switch(*options)
- {
- case MSG_EXT_PPR_OPTION_DT_CRC:
- case MSG_EXT_PPR_OPTION_DT_UNITS:
- if(!(p->features & AHC_ULTRA3))
- {
- *options = 0;
- maxsync = MAX(maxsync, AHC_SYNCRATE_ULTRA2);
- }
- break;
- case MSG_EXT_PPR_OPTION_DT_CRC_QUICK:
- case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK:
- if(!(p->features & AHC_ULTRA3))
- {
- *options = 0;
- maxsync = MAX(maxsync, AHC_SYNCRATE_ULTRA2);
- }
- else
- {
- /*
- * we don't support the Quick Arbitration variants of dual edge
- * clocking. As it turns out, we want to send back the
- * same basic option, but without the QA attribute.
- * We know that we are responding because we would never set
- * these options ourself, we would only respond to them.
- */
- switch(*options)
- {
- case MSG_EXT_PPR_OPTION_DT_CRC_QUICK:
- *options = MSG_EXT_PPR_OPTION_DT_CRC;
- break;
- case MSG_EXT_PPR_OPTION_DT_UNITS_QUICK:
- *options = MSG_EXT_PPR_OPTION_DT_UNITS;
- break;
- }
- }
- break;
- default:
- *options = 0;
- maxsync = MAX(maxsync, AHC_SYNCRATE_ULTRA2);
- break;
- }
- syncrate = &aic7xxx_syncrates[maxsync];
- while ( (syncrate->rate[0] != NULL) &&
- (!(p->features & AHC_ULTRA2) || syncrate->sxfr_ultra2) )
- {
- if (*period <= syncrate->period)
- {
- switch(*options)
- {
- case MSG_EXT_PPR_OPTION_DT_CRC:
- case MSG_EXT_PPR_OPTION_DT_UNITS:
- if(!(syncrate->sxfr_ultra2 & AHC_SYNCRATE_CRC))
- {
- done = TRUE;
- /*
- * oops, we went too low for the CRC/DualEdge signalling, so
- * clear the options byte
- */
- *options = 0;
- /*
- * We'll be sending a reply to this packet to set the options
- * properly, so unilaterally set the period as well.
- */
- *period = syncrate->period;
- }
- else
- {
- done = TRUE;
- if(syncrate == &aic7xxx_syncrates[maxsync])
- {
- *period = syncrate->period;
- }
- }
- break;
- default:
- if(!(syncrate->sxfr_ultra2 & AHC_SYNCRATE_CRC))
- {
- done = TRUE;
- if(syncrate == &aic7xxx_syncrates[maxsync])
- {
- *period = syncrate->period;
- }
- }
- break;
- }
- if(done)
- {
- break;
- }
- }
- syncrate++;
- }
- if ( (*period == 0) || (syncrate->rate[0] == NULL) ||
- ((p->features & AHC_ULTRA2) && (syncrate->sxfr_ultra2 == 0)) )
- {
- /*
- * Use async transfers for this target
- */
- *options = 0;
- *period = 255;
- syncrate = NULL;
- }
- return (syncrate);
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_find_period
- *
- * Description:
- * Look up the valid SCSIRATE to period conversion in our table
- *-F*************************************************************************/
-static unsigned int
-aic7xxx_find_period(struct aic7xxx_host *p, unsigned int scsirate,
- unsigned int maxsync)
-{
- struct aic7xxx_syncrate *syncrate;
-
- if (p->features & AHC_ULTRA2)
- {
- scsirate &= SXFR_ULTRA2;
- }
- else
- {
- scsirate &= SXFR;
- }
-
- syncrate = &aic7xxx_syncrates[maxsync];
- while (syncrate->rate[0] != NULL)
- {
- if (p->features & AHC_ULTRA2)
- {
- if (syncrate->sxfr_ultra2 == 0)
- break;
- else if (scsirate == syncrate->sxfr_ultra2)
- return (syncrate->period);
- else if (scsirate == (syncrate->sxfr_ultra2 & ~AHC_SYNCRATE_CRC))
- return (syncrate->period);
- }
- else if (scsirate == (syncrate->sxfr & ~ULTRA_SXFR))
- {
- return (syncrate->period);
- }
- syncrate++;
- }
- return (0); /* async */
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_validate_offset
- *
- * Description:
- * Set a valid offset value for a particular card in use and transfer
- * settings in use.
- *-F*************************************************************************/
-static void
-aic7xxx_validate_offset(struct aic7xxx_host *p,
- struct aic7xxx_syncrate *syncrate, unsigned int *offset, int wide)
-{
- unsigned int maxoffset;
-
- /* Limit offset to what the card (and device) can do */
- if (syncrate == NULL)
- {
- maxoffset = 0;
- }
- else if (p->features & AHC_ULTRA2)
- {
- maxoffset = MAX_OFFSET_ULTRA2;
- }
- else
- {
- if (wide)
- maxoffset = MAX_OFFSET_16BIT;
- else
- maxoffset = MAX_OFFSET_8BIT;
- }
- *offset = MIN(*offset, maxoffset);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_set_syncrate
- *
- * Description:
- * Set the actual syncrate down in the card and in our host structs
- *-F*************************************************************************/
-static void
-aic7xxx_set_syncrate(struct aic7xxx_host *p, struct aic7xxx_syncrate *syncrate,
- int target, int channel, unsigned int period, unsigned int offset,
- unsigned char options, unsigned int type)
-{
- unsigned char tindex;
- unsigned short target_mask;
- unsigned char lun, old_options;
- unsigned int old_period, old_offset;
-
- tindex = target | (channel << 3);
- target_mask = 0x01 << tindex;
- lun = aic_inb(p, SCB_TCL) & 0x07;
-
- if (syncrate == NULL)
- {
- period = 0;
- offset = 0;
- }
-
- old_period = p->transinfo[tindex].cur_period;
- old_offset = p->transinfo[tindex].cur_offset;
- old_options = p->transinfo[tindex].cur_options;
-
-
- if (type & AHC_TRANS_CUR)
- {
- unsigned int scsirate;
-
- scsirate = aic_inb(p, TARG_SCSIRATE + tindex);
- if (p->features & AHC_ULTRA2)
- {
- scsirate &= ~SXFR_ULTRA2;
- if (syncrate != NULL)
- {
- switch(options)
- {
- case MSG_EXT_PPR_OPTION_DT_UNITS:
- /*
- * mask off the CRC bit in the xfer settings
- */
- scsirate |= (syncrate->sxfr_ultra2 & ~AHC_SYNCRATE_CRC);
- break;
- default:
- scsirate |= syncrate->sxfr_ultra2;
- break;
- }
- }
- if (type & AHC_TRANS_ACTIVE)
- {
- aic_outb(p, offset, SCSIOFFSET);
- }
- aic_outb(p, offset, TARG_OFFSET + tindex);
- }
- else /* Not an Ultra2 controller */
- {
- scsirate &= ~(SXFR|SOFS);
- p->ultraenb &= ~target_mask;
- if (syncrate != NULL)
- {
- if (syncrate->sxfr & ULTRA_SXFR)
- {
- p->ultraenb |= target_mask;
- }
- scsirate |= (syncrate->sxfr & SXFR);
- scsirate |= (offset & SOFS);
- }
- if (type & AHC_TRANS_ACTIVE)
- {
- unsigned char sxfrctl0;
-
- sxfrctl0 = aic_inb(p, SXFRCTL0);
- sxfrctl0 &= ~FAST20;
- if (p->ultraenb & target_mask)
- sxfrctl0 |= FAST20;
- aic_outb(p, sxfrctl0, SXFRCTL0);
- }
- aic_outb(p, p->ultraenb & 0xff, ULTRA_ENB);
- aic_outb(p, (p->ultraenb >> 8) & 0xff, ULTRA_ENB + 1 );
- }
- if (type & AHC_TRANS_ACTIVE)
- {
- aic_outb(p, scsirate, SCSIRATE);
- }
- aic_outb(p, scsirate, TARG_SCSIRATE + tindex);
- p->transinfo[tindex].cur_period = period;
- p->transinfo[tindex].cur_offset = offset;
- p->transinfo[tindex].cur_options = options;
- if ( !(type & AHC_TRANS_QUITE) &&
- (aic7xxx_verbose & VERBOSE_NEGOTIATION) &&
- (p->dev_flags[tindex] & DEVICE_PRINT_DTR) )
- {
- if (offset)
- {
- int rate_mod = (scsirate & WIDEXFER) ? 1 : 0;
-
- printk(INFO_LEAD "Synchronous at %s Mbyte/sec, "
- "offset %d.\n", p->host_no, channel, target, lun,
- syncrate->rate[rate_mod], offset);
- }
- else
- {
- printk(INFO_LEAD "Using asynchronous transfers.\n",
- p->host_no, channel, target, lun);
- }
- p->dev_flags[tindex] &= ~DEVICE_PRINT_DTR;
- }
- }
-
- if (type & AHC_TRANS_GOAL)
- {
- p->transinfo[tindex].goal_period = period;
- p->transinfo[tindex].goal_offset = offset;
- p->transinfo[tindex].goal_options = options;
- }
-
- if (type & AHC_TRANS_USER)
- {
- p->transinfo[tindex].user_period = period;
- p->transinfo[tindex].user_offset = offset;
- p->transinfo[tindex].user_options = options;
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_set_width
- *
- * Description:
- * Set the actual width down in the card and in our host structs
- *-F*************************************************************************/
-static void
-aic7xxx_set_width(struct aic7xxx_host *p, int target, int channel, int lun,
- unsigned int width, unsigned int type)
-{
- unsigned char tindex;
- unsigned short target_mask;
- unsigned int old_width;
-
- tindex = target | (channel << 3);
- target_mask = 1 << tindex;
-
- old_width = p->transinfo[tindex].cur_width;
-
- if (type & AHC_TRANS_CUR)
- {
- unsigned char scsirate;
-
- scsirate = aic_inb(p, TARG_SCSIRATE + tindex);
-
- scsirate &= ~WIDEXFER;
- if (width == MSG_EXT_WDTR_BUS_16_BIT)
- scsirate |= WIDEXFER;
-
- aic_outb(p, scsirate, TARG_SCSIRATE + tindex);
-
- if (type & AHC_TRANS_ACTIVE)
- aic_outb(p, scsirate, SCSIRATE);
-
- p->transinfo[tindex].cur_width = width;
-
- if ( !(type & AHC_TRANS_QUITE) &&
- (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- (p->dev_flags[tindex] & DEVICE_PRINT_DTR) )
- {
- printk(INFO_LEAD "Using %s transfers\n", p->host_no, channel, target,
- lun, (scsirate & WIDEXFER) ? "Wide(16bit)" : "Narrow(8bit)" );
- }
- }
-
- if (type & AHC_TRANS_GOAL)
- p->transinfo[tindex].goal_width = width;
- if (type & AHC_TRANS_USER)
- p->transinfo[tindex].user_width = width;
-
- if (p->transinfo[tindex].goal_offset)
- {
- if (p->features & AHC_ULTRA2)
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_ULTRA2;
- }
- else if (width == MSG_EXT_WDTR_BUS_16_BIT)
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_16BIT;
- }
- else
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_8BIT;
- }
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * scbq_init
- *
- * Description:
- * SCB queue initialization.
- *
- *-F*************************************************************************/
-static void
-scbq_init(volatile scb_queue_type *queue)
-{
- queue->head = NULL;
- queue->tail = NULL;
-}
-
-/*+F*************************************************************************
- * Function:
- * scbq_insert_head
- *
- * Description:
- * Add an SCB to the head of the list.
- *
- *-F*************************************************************************/
-static inline void
-scbq_insert_head(volatile scb_queue_type *queue, struct aic7xxx_scb *scb)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags;
-#endif
-
- DRIVER_LOCK
- scb->q_next = queue->head;
- queue->head = scb;
- if (queue->tail == NULL) /* If list was empty, update tail. */
- queue->tail = queue->head;
- DRIVER_UNLOCK
-}
-
-/*+F*************************************************************************
- * Function:
- * scbq_remove_head
- *
- * Description:
- * Remove an SCB from the head of the list.
- *
- *-F*************************************************************************/
-static inline struct aic7xxx_scb *
-scbq_remove_head(volatile scb_queue_type *queue)
-{
- struct aic7xxx_scb * scbp;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags;
-#endif
-
- DRIVER_LOCK
- scbp = queue->head;
- if (queue->head != NULL)
- queue->head = queue->head->q_next;
- if (queue->head == NULL) /* If list is now empty, update tail. */
- queue->tail = NULL;
- DRIVER_UNLOCK
- return(scbp);
-}
-
-/*+F*************************************************************************
- * Function:
- * scbq_remove
- *
- * Description:
- * Removes an SCB from the list.
- *
- *-F*************************************************************************/
-static inline void
-scbq_remove(volatile scb_queue_type *queue, struct aic7xxx_scb *scb)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags;
-#endif
-
- DRIVER_LOCK
- if (queue->head == scb)
- {
- /* At beginning of queue, remove from head. */
- scbq_remove_head(queue);
- }
- else
- {
- struct aic7xxx_scb *curscb = queue->head;
-
- /*
- * Search until the next scb is the one we're looking for, or
- * we run out of queue.
- */
- while ((curscb != NULL) && (curscb->q_next != scb))
- {
- curscb = curscb->q_next;
- }
- if (curscb != NULL)
- {
- /* Found it. */
- curscb->q_next = scb->q_next;
- if (scb->q_next == NULL)
- {
- /* Update the tail when removing the tail. */
- queue->tail = curscb;
- }
- }
- }
- DRIVER_UNLOCK
-}
-
-/*+F*************************************************************************
- * Function:
- * scbq_insert_tail
- *
- * Description:
- * Add an SCB at the tail of the list.
- *
- *-F*************************************************************************/
-static inline void
-scbq_insert_tail(volatile scb_queue_type *queue, struct aic7xxx_scb *scb)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags;
-#endif
-
- DRIVER_LOCK
- scb->q_next = NULL;
- if (queue->tail != NULL) /* Add the scb at the end of the list. */
- queue->tail->q_next = scb;
- queue->tail = scb; /* Update the tail. */
- if (queue->head == NULL) /* If list was empty, update head. */
- queue->head = queue->tail;
- DRIVER_UNLOCK
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_match_scb
- *
- * Description:
- * Checks to see if an scb matches the target/channel as specified.
- * If target is ALL_TARGETS (-1), then we're looking for any device
- * on the specified channel; this happens when a channel is going
- * to be reset and all devices on that channel must be aborted.
- *-F*************************************************************************/
-static int
-aic7xxx_match_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb,
- int target, int channel, int lun, unsigned char tag)
-{
- int targ = (scb->hscb->target_channel_lun >> 4) & 0x0F;
- int chan = (scb->hscb->target_channel_lun >> 3) & 0x01;
- int slun = scb->hscb->target_channel_lun & 0x07;
- int match;
-
- match = ((chan == channel) || (channel == ALL_CHANNELS));
- if (match != 0)
- match = ((targ == target) || (target == ALL_TARGETS));
- if (match != 0)
- match = ((lun == slun) || (lun == ALL_LUNS));
- if (match != 0)
- match = ((tag == scb->hscb->tag) || (tag == SCB_LIST_NULL));
-
- return (match);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_add_curscb_to_free_list
- *
- * Description:
- * Adds the current scb (in SCBPTR) to the list of free SCBs.
- *-F*************************************************************************/
-static void
-aic7xxx_add_curscb_to_free_list(struct aic7xxx_host *p)
-{
- /*
- * Invalidate the tag so that aic7xxx_find_scb doesn't think
- * it's active
- */
- aic_outb(p, SCB_LIST_NULL, SCB_TAG);
- aic_outb(p, 0, SCB_CONTROL);
-
- aic_outb(p, aic_inb(p, FREE_SCBH), SCB_NEXT);
- aic_outb(p, aic_inb(p, SCBPTR), FREE_SCBH);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_rem_scb_from_disc_list
- *
- * Description:
- * Removes the current SCB from the disconnected list and adds it
- * to the free list.
- *-F*************************************************************************/
-static unsigned char
-aic7xxx_rem_scb_from_disc_list(struct aic7xxx_host *p, unsigned char scbptr,
- unsigned char prev)
-{
- unsigned char next;
-
- aic_outb(p, scbptr, SCBPTR);
- next = aic_inb(p, SCB_NEXT);
- aic7xxx_add_curscb_to_free_list(p);
-
- if (prev != SCB_LIST_NULL)
- {
- aic_outb(p, prev, SCBPTR);
- aic_outb(p, next, SCB_NEXT);
- }
- else
- {
- aic_outb(p, next, DISCONNECTED_SCBH);
- }
-
- return next;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_busy_target
- *
- * Description:
- * Set the specified target busy.
- *-F*************************************************************************/
-static inline void
-aic7xxx_busy_target(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- p->untagged_scbs[scb->hscb->target_channel_lun] = scb->hscb->tag;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_index_busy_target
- *
- * Description:
- * Returns the index of the busy target, and optionally sets the
- * target inactive.
- *-F*************************************************************************/
-static inline unsigned char
-aic7xxx_index_busy_target(struct aic7xxx_host *p, unsigned char tcl,
- int unbusy)
-{
- unsigned char busy_scbid;
-
- busy_scbid = p->untagged_scbs[tcl];
- if (unbusy)
- {
- p->untagged_scbs[tcl] = SCB_LIST_NULL;
- }
- return (busy_scbid);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_find_scb
- *
- * Description:
- * Look through the SCB array of the card and attempt to find the
- * hardware SCB that corresponds to the passed in SCB. Return
- * SCB_LIST_NULL if unsuccessful. This routine assumes that the
- * card is already paused.
- *-F*************************************************************************/
-static unsigned char
-aic7xxx_find_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- unsigned char saved_scbptr;
- unsigned char curindex;
-
- saved_scbptr = aic_inb(p, SCBPTR);
- curindex = 0;
- for (curindex = 0; curindex < p->scb_data->maxhscbs; curindex++)
- {
- aic_outb(p, curindex, SCBPTR);
- if (aic_inb(p, SCB_TAG) == scb->hscb->tag)
- {
- break;
- }
- }
- aic_outb(p, saved_scbptr, SCBPTR);
- if (curindex >= p->scb_data->maxhscbs)
- {
- curindex = SCB_LIST_NULL;
- }
-
- return (curindex);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_allocate_scb
- *
- * Description:
- * Get an SCB from the free list or by allocating a new one.
- *-F*************************************************************************/
-static int
-aic7xxx_allocate_scb(struct aic7xxx_host *p)
-{
- struct aic7xxx_scb *scbp = NULL;
- int scb_size = (sizeof (struct hw_scatterlist) * AIC7XXX_MAX_SG) + 12 + 6;
- int i;
- int step = PAGE_SIZE / 1024;
- unsigned long scb_count = 0;
- struct hw_scatterlist *hsgp;
- struct aic7xxx_scb *scb_ap;
- struct aic7xxx_scb_dma *scb_dma;
- unsigned char *bufs;
-
- if (p->scb_data->numscbs < p->scb_data->maxscbs)
- {
- /*
- * Calculate the optimal number of SCBs to allocate.
- *
- * NOTE: This formula works because the sizeof(sg_array) is always
- * 1024. Therefore, scb_size * i would always be > PAGE_SIZE *
- * (i/step). The (i-1) allows the left hand side of the equation
- * to grow into the right hand side to a point of near perfect
- * efficiency since scb_size * (i -1) is growing slightly faster
- * than the right hand side. If the number of SG array elements
- * is changed, this function may not be near so efficient any more.
- *
- * Since the DMA'able buffers are now allocated in a seperate
- * chunk this algorithm has been modified to match. The '12'
- * and '6' factors in scb_size are for the DMA'able command byte
- * and sensebuffers respectively. -DaveM
- */
- for ( i=step;; i *= 2 )
- {
- if ( (scb_size * (i-1)) >= ( (PAGE_SIZE * (i/step)) - 64 ) )
- {
- i /= 2;
- break;
- }
- }
- scb_count = MIN( (i-1), p->scb_data->maxscbs - p->scb_data->numscbs);
- scb_ap = (struct aic7xxx_scb *)kmalloc(sizeof (struct aic7xxx_scb) * scb_count
- + sizeof(struct aic7xxx_scb_dma), GFP_ATOMIC);
- if (scb_ap == NULL)
- return(0);
- scb_dma = (struct aic7xxx_scb_dma *)&scb_ap[scb_count];
- hsgp = (struct hw_scatterlist *)
- pci_alloc_consistent(p->pdev, scb_size * scb_count,
- &scb_dma->dma_address);
- if (hsgp == NULL)
- {
- kfree(scb_ap);
- return(0);
- }
- bufs = (unsigned char *)&hsgp[scb_count * AIC7XXX_MAX_SG];
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- {
- if (p->scb_data->numscbs == 0)
- printk(INFO_LEAD "Allocating initial %ld SCB structures.\n",
- p->host_no, -1, -1, -1, scb_count);
- else
- printk(INFO_LEAD "Allocating %ld additional SCB structures.\n",
- p->host_no, -1, -1, -1, scb_count);
- }
-#endif
- memset(scb_ap, 0, sizeof (struct aic7xxx_scb) * scb_count);
- scb_dma->dma_offset = (unsigned long)scb_dma->dma_address
- - (unsigned long)hsgp;
- scb_dma->dma_len = scb_size * scb_count;
- for (i=0; i < scb_count; i++)
- {
- scbp = &scb_ap[i];
- scbp->hscb = &p->scb_data->hscbs[p->scb_data->numscbs];
- scbp->sg_list = &hsgp[i * AIC7XXX_MAX_SG];
- scbp->sense_cmd = bufs;
- scbp->cmnd = bufs + 6;
- bufs += 12 + 6;
- scbp->scb_dma = scb_dma;
- memset(scbp->hscb, 0, sizeof(struct aic7xxx_hwscb));
- scbp->hscb->tag = p->scb_data->numscbs;
- /*
- * Place in the scb array; never is removed
- */
- p->scb_data->scb_array[p->scb_data->numscbs++] = scbp;
- scbq_insert_tail(&p->scb_data->free_scbs, scbp);
- }
- scbp->kmalloc_ptr = scb_ap;
- }
- return(scb_count);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_queue_cmd_complete
- *
- * Description:
- * Due to race conditions present in the SCSI subsystem, it is easier
- * to queue completed commands, then call scsi_done() on them when
- * we're finished. This function queues the completed commands.
- *-F*************************************************************************/
-static void
-aic7xxx_queue_cmd_complete(struct aic7xxx_host *p, Scsi_Cmnd *cmd)
-{
- cmd->host_scribble = (char *)p->completeq.head;
- p->completeq.head = cmd;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_done_cmds_complete
- *
- * Description:
- * Process the completed command queue.
- *-F*************************************************************************/
-static void
-aic7xxx_done_cmds_complete(struct aic7xxx_host *p)
-{
- Scsi_Cmnd *cmd;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned int cpu_flags = 0;
-#endif
-
- DRIVER_LOCK
- while (p->completeq.head != NULL)
- {
- cmd = p->completeq.head;
- p->completeq.head = (Scsi_Cmnd *)cmd->host_scribble;
- cmd->host_scribble = NULL;
- cmd->scsi_done(cmd);
- }
- DRIVER_UNLOCK
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_free_scb
- *
- * Description:
- * Free the scb and insert into the free scb list.
- *-F*************************************************************************/
-static void
-aic7xxx_free_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
-
- scb->flags = SCB_FREE;
- scb->cmd = NULL;
- scb->sg_count = 0;
- scb->sg_length = 0;
- scb->tag_action = 0;
- scb->hscb->control = 0;
- scb->hscb->target_status = 0;
- scb->hscb->target_channel_lun = SCB_LIST_NULL;
-
- scbq_insert_head(&p->scb_data->free_scbs, scb);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_done
- *
- * Description:
- * Calls the higher level scsi done function and frees the scb.
- *-F*************************************************************************/
-static void
-aic7xxx_done(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- Scsi_Cmnd *cmd = scb->cmd;
- int tindex = TARGET_INDEX(cmd);
- struct aic7xxx_scb *scbp;
- unsigned char queue_depth;
-
- if (cmd->use_sg > 1)
- {
- struct scatterlist *sg;
-
- sg = (struct scatterlist *)cmd->request_buffer;
- pci_unmap_sg(p->pdev, sg, cmd->use_sg, scsi_to_pci_dma_dir(cmd->sc_data_direction));
- }
- else if (cmd->request_bufflen)
- pci_unmap_single(p->pdev, aic7xxx_mapping(cmd),
- cmd->request_bufflen,
- scsi_to_pci_dma_dir(cmd->sc_data_direction));
- if (scb->flags & SCB_SENSE)
- {
- pci_unmap_single(p->pdev,
- le32_to_cpu(scb->sg_list[0].address),
- sizeof(cmd->sense_buffer),
- PCI_DMA_FROMDEVICE);
- }
- if (scb->flags & SCB_RECOVERY_SCB)
- {
- p->flags &= ~AHC_ABORT_PENDING;
- }
- if (scb->flags & SCB_RESET)
- {
- cmd->result = (DID_RESET << 16) | (cmd->result & 0xffff);
- }
- else if (scb->flags & SCB_ABORT)
- {
- cmd->result = (DID_RESET << 16) | (cmd->result & 0xffff);
- }
- else if (!(p->dev_flags[tindex] & DEVICE_SCANNED))
- {
- if ( (cmd->cmnd[0] == INQUIRY) && (cmd->result == DID_OK) )
- {
- char *buffer;
-
- p->dev_flags[tindex] |= DEVICE_PRESENT;
- if(cmd->use_sg)
- {
- struct scatterlist *sg;
-
- sg = (struct scatterlist *)cmd->request_buffer;
- buffer = (char *)sg[0].address;
- }
- else
- {
- buffer = (char *)cmd->request_buffer;
- }
-#define WIDE_INQUIRY_BITS 0x60
-#define SYNC_INQUIRY_BITS 0x10
-#define SCSI_VERSION_BITS 0x07
-#define SCSI_DT_BIT 0x04
- if ( (buffer[7] & WIDE_INQUIRY_BITS) &&
- (p->features & AHC_WIDE) )
- {
- p->needwdtr |= (1<<tindex);
- p->needwdtr_copy |= (1<<tindex);
- p->transinfo[tindex].goal_width = p->transinfo[tindex].user_width;
- }
- else
- {
- p->needwdtr &= ~(1<<tindex);
- p->needwdtr_copy &= ~(1<<tindex);
- pause_sequencer(p);
- aic7xxx_set_width(p, cmd->target, cmd->channel, cmd->lun,
- MSG_EXT_WDTR_BUS_8_BIT, (AHC_TRANS_ACTIVE |
- AHC_TRANS_GOAL |
- AHC_TRANS_CUR) );
- unpause_sequencer(p, FALSE);
- }
- if ( (buffer[7] & SYNC_INQUIRY_BITS) &&
- p->transinfo[tindex].user_offset )
- {
- p->transinfo[tindex].goal_period = p->transinfo[tindex].user_period;
- p->transinfo[tindex].goal_options = p->transinfo[tindex].user_options;
- if (p->features & AHC_ULTRA2)
- p->transinfo[tindex].goal_offset = MAX_OFFSET_ULTRA2;
- else if (p->transinfo[tindex].goal_width == MSG_EXT_WDTR_BUS_16_BIT)
- p->transinfo[tindex].goal_offset = MAX_OFFSET_16BIT;
- else
- p->transinfo[tindex].goal_offset = MAX_OFFSET_8BIT;
- if ( (((buffer[2] & SCSI_VERSION_BITS) == 3) ||
- (buffer[56] & SCSI_DT_BIT) ||
- (p->dev_flags[tindex] & DEVICE_SCSI_3) ) &&
- (p->transinfo[tindex].user_period <= 9) &&
- (p->transinfo[tindex].user_options) )
- {
- p->needppr |= (1<<tindex);
- p->needppr_copy |= (1<<tindex);
- p->needsdtr &= ~(1<<tindex);
- p->needsdtr_copy &= ~(1<<tindex);
- p->needwdtr &= ~(1<<tindex);
- p->needwdtr_copy &= ~(1<<tindex);
- p->dev_flags[tindex] |= DEVICE_SCSI_3;
- }
- else
- {
- p->needsdtr |= (1<<tindex);
- p->needsdtr_copy |= (1<<tindex);
- p->transinfo[tindex].goal_period =
- MAX(10, p->transinfo[tindex].goal_period);
- p->transinfo[tindex].goal_options = 0;
- }
- }
- else
- {
- p->needsdtr &= ~(1<<tindex);
- p->needsdtr_copy &= ~(1<<tindex);
- p->transinfo[tindex].goal_period = 255;
- p->transinfo[tindex].goal_offset = 0;
- p->transinfo[tindex].goal_options = 0;
- }
- /*
- * This is needed to work around a sequencer bug for now. Regardless
- * of the controller in use, if we have a Quantum drive, we need to
- * limit the speed to 80MByte/sec. As soon as I get a fixed version
- * of the sequencer, this code will get yanked.
- */
- if(!strncmp(buffer + 8, "QUANTUM", 7) &&
- p->transinfo[tindex].goal_options )
- {
- p->transinfo[tindex].goal_period =
- MAX(p->transinfo[tindex].goal_period, 10);
- p->transinfo[tindex].goal_options = 0;
- p->needppr &= ~(1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr |= (1<<tindex);
- p->needsdtr_copy |= (1<<tindex);
- p->needwdtr |= (1<<tindex);
- p->needwdtr_copy |= (1<<tindex);
- }
- /*
- * Get the INQUIRY checksum. We use this on Ultra 160/m
- * and older devices both. It allows us to drop speed on any bus type
- * while at the same time giving us the needed domain validation for
- * Ultra 160/m
- *
- * Note: We only get the checksum and set the SCANNED bit if this is
- * one of our dtr commands. If we don't do this, then we end up
- * getting bad checksum results on the mid-level SCSI code's INQUIRY
- * commands.
- */
- if(p->dev_dtr_cmnd[tindex] == cmd) {
- unsigned int checksum = 0;
- int *ibuffer;
- int i=0;
-
- ibuffer = (int *)buffer;
- for( i = 0; i < (cmd->request_bufflen >> 2); i++)
- {
- checksum += ibuffer[i];
- }
- p->dev_checksum[tindex] = checksum;
- p->dev_flags[tindex] |= DEVICE_SCANNED;
- p->dev_flags[tindex] |= DEVICE_PRINT_DTR;
- }
-#undef WIDE_INQUIRY_BITS
-#undef SYNC_INQUIRY_BITS
-#undef SCSI_VERSION_BITS
-#undef SCSI_DT_BIT
- }
- }
- else if ((scb->flags & SCB_MSGOUT_BITS) != 0)
- {
- unsigned short mask;
- int message_error = FALSE;
-
- mask = 0x01 << tindex;
-
- /*
- * Check to see if we get an invalid message or a message error
- * after failing to negotiate a wide or sync transfer message.
- */
- if ((scb->flags & SCB_SENSE) &&
- ((scb->cmd->sense_buffer[12] == 0x43) || /* INVALID_MESSAGE */
- (scb->cmd->sense_buffer[12] == 0x49))) /* MESSAGE_ERROR */
- {
- message_error = TRUE;
- }
-
- if (scb->flags & SCB_MSGOUT_WDTR)
- {
- p->dtr_pending &= ~mask;
- if (message_error)
- {
- if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- (p->dev_flags[tindex] & DEVICE_PRINT_DTR) )
- {
- printk(INFO_LEAD "Device failed to complete Wide Negotiation "
- "processing and\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "returned a sense error code for invalid message, "
- "disabling future\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "Wide negotiation to this device.\n", p->host_no,
- CTL_OF_SCB(scb));
- }
- p->needwdtr &= ~mask;
- p->needwdtr_copy &= ~mask;
- }
- }
- if (scb->flags & SCB_MSGOUT_SDTR)
- {
- p->dtr_pending &= ~mask;
- if (message_error)
- {
- if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- (p->dev_flags[tindex] & DEVICE_PRINT_DTR) )
- {
- printk(INFO_LEAD "Device failed to complete Sync Negotiation "
- "processing and\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "returned a sense error code for invalid message, "
- "disabling future\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "Sync negotiation to this device.\n", p->host_no,
- CTL_OF_SCB(scb));
- p->dev_flags[tindex] &= ~DEVICE_PRINT_DTR;
- }
- p->needsdtr &= ~mask;
- p->needsdtr_copy &= ~mask;
- }
- }
- if (scb->flags & SCB_MSGOUT_PPR)
- {
- p->dtr_pending &= ~mask;
- if(message_error)
- {
- if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- (p->dev_flags[tindex] & DEVICE_PRINT_DTR) )
- {
- printk(INFO_LEAD "Device failed to complete Parallel Protocol "
- "Request processing and\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "returned a sense error code for invalid message, "
- "disabling future\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "Parallel Protocol Request negotiation to this "
- "device.\n", p->host_no, CTL_OF_SCB(scb));
- }
- /*
- * Disable PPR negotiation and revert back to WDTR and SDTR setup
- */
- p->needppr &= ~mask;
- p->needppr_copy &= ~mask;
- p->needsdtr |= mask;
- p->needsdtr_copy |= mask;
- p->needwdtr |= mask;
- p->needwdtr_copy |= mask;
- }
- }
- }
- queue_depth = p->dev_temp_queue_depth[tindex];
- if (queue_depth >= p->dev_active_cmds[tindex])
- {
- scbp = scbq_remove_head(&p->delayed_scbs[tindex]);
- if (scbp)
- {
- if (queue_depth == 1)
- {
- /*
- * Give extra preference to untagged devices, such as CD-R devices
- * This makes it more likely that a drive *won't* stuff up while
- * waiting on data at a critical time, such as CD-R writing and
- * audio CD ripping operations. Should also benefit tape drives.
- */
- scbq_insert_head(&p->waiting_scbs, scbp);
- }
- else
- {
- scbq_insert_tail(&p->waiting_scbs, scbp);
- }
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- printk(INFO_LEAD "Moving SCB from delayed to waiting queue.\n",
- p->host_no, CTL_OF_SCB(scbp));
-#endif
- if (queue_depth > p->dev_active_cmds[tindex])
- {
- scbp = scbq_remove_head(&p->delayed_scbs[tindex]);
- if (scbp)
- scbq_insert_tail(&p->waiting_scbs, scbp);
- }
- }
- }
- if ( !(scb->tag_action) && (p->tagenable & (1<<tindex)) )
- {
- p->dev_temp_queue_depth[tindex] = p->dev_max_queue_depth[tindex];
- }
- p->dev_active_cmds[tindex]--;
- p->activescbs--;
-
- {
- int actual;
-
- /*
- * XXX: we should actually know how much actually transferred
- * XXX: for each command, but apparently that's too difficult.
- *
- * We set a lower limit of 512 bytes on the transfer length. We
- * ignore anything less than this because we don't have a real
- * reason to count it. Read/Writes to tapes are usually about 20K
- * and disks are a minimum of 512 bytes unless you want to count
- * non-read/write commands (such as TEST_UNIT_READY) which we don't
- */
- actual = scb->sg_length;
- if ((actual >= 512) && (((cmd->result >> 16) & 0xf) == DID_OK))
- {
- struct aic7xxx_xferstats *sp;
-#ifdef AIC7XXX_PROC_STATS
- long *ptr;
- int x;
-#endif /* AIC7XXX_PROC_STATS */
-
- sp = &p->stats[TARGET_INDEX(cmd)];
-
- /*
- * For block devices, cmd->request.cmd is always == either READ or
- * WRITE. For character devices, this isn't always set properly, so
- * we check data_cmnd[0]. This catches the conditions for st.c, but
- * I'm still not sure if request.cmd is valid for sg devices.
- */
- if ( (cmd->request.cmd == WRITE) || (cmd->data_cmnd[0] == WRITE_6) ||
- (cmd->data_cmnd[0] == WRITE_FILEMARKS) )
- {
- sp->w_total++;
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if ( (sp->w_total > 16) && (aic7xxx_verbose > 0xffff) )
- aic7xxx_verbose &= 0xffff;
-#endif
-#ifdef AIC7XXX_PROC_STATS
- ptr = sp->w_bins;
-#endif /* AIC7XXX_PROC_STATS */
- }
- else
- {
- sp->r_total++;
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if ( (sp->r_total > 16) && (aic7xxx_verbose > 0xffff) )
- aic7xxx_verbose &= 0xffff;
-#endif
-#ifdef AIC7XXX_PROC_STATS
- ptr = sp->r_bins;
-#endif /* AIC7XXX_PROC_STATS */
- }
-#ifdef AIC7XXX_PROC_STATS
- x = -11;
- while(actual)
- {
- actual >>= 1;
- x++;
- }
- if (x < 0)
- {
- ptr[0]++;
- }
- else if (x > 7)
- {
- ptr[7]++;
- }
- else
- {
- ptr[x]++;
- }
-#endif /* AIC7XXX_PROC_STATS */
- }
- }
- aic7xxx_free_scb(p, scb);
- aic7xxx_queue_cmd_complete(p, cmd);
-
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_run_done_queue
- *
- * Description:
- * Calls the aic7xxx_done() for the Scsi_Cmnd of each scb in the
- * aborted list, and adds each scb to the free list. If complete
- * is TRUE, we also process the commands complete list.
- *-F*************************************************************************/
-static void
-aic7xxx_run_done_queue(struct aic7xxx_host *p, /*complete*/ int complete)
-{
- struct aic7xxx_scb *scb;
- int i, found = 0;
-
- for (i = 0; i < p->scb_data->numscbs; i++)
- {
- scb = p->scb_data->scb_array[i];
- if (scb->flags & SCB_QUEUED_FOR_DONE)
- {
- if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
- printk(INFO_LEAD "Aborting scb %d\n",
- p->host_no, CTL_OF_SCB(scb), scb->hscb->tag);
- found++;
- aic7xxx_done(p, scb);
- }
- }
- if (aic7xxx_verbose & (VERBOSE_ABORT_RETURN | VERBOSE_RESET_RETURN))
- {
- printk(INFO_LEAD "%d commands found and queued for "
- "completion.\n", p->host_no, -1, -1, -1, found);
- }
- if (complete)
- {
- aic7xxx_done_cmds_complete(p);
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_abort_waiting_scb
- *
- * Description:
- * Manipulate the waiting for selection list and return the
- * scb that follows the one that we remove.
- *-F*************************************************************************/
-static unsigned char
-aic7xxx_abort_waiting_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb,
- unsigned char scbpos, unsigned char prev)
-{
- unsigned char curscb, next;
-
- /*
- * Select the SCB we want to abort and pull the next pointer out of it.
- */
- curscb = aic_inb(p, SCBPTR);
- aic_outb(p, scbpos, SCBPTR);
- next = aic_inb(p, SCB_NEXT);
-
- aic7xxx_add_curscb_to_free_list(p);
-
- /*
- * Update the waiting list
- */
- if (prev == SCB_LIST_NULL)
- {
- /*
- * First in the list
- */
- aic_outb(p, next, WAITING_SCBH);
- }
- else
- {
- /*
- * Select the scb that pointed to us and update its next pointer.
- */
- aic_outb(p, prev, SCBPTR);
- aic_outb(p, next, SCB_NEXT);
- }
- /*
- * Point us back at the original scb position and inform the SCSI
- * system that the command has been aborted.
- */
- aic_outb(p, curscb, SCBPTR);
- return (next);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_search_qinfifo
- *
- * Description:
- * Search the queue-in FIFO for matching SCBs and conditionally
- * requeue. Returns the number of matching SCBs.
- *-F*************************************************************************/
-static int
-aic7xxx_search_qinfifo(struct aic7xxx_host *p, int target, int channel,
- int lun, unsigned char tag, int flags, int requeue,
- volatile scb_queue_type *queue)
-{
- int found;
- unsigned char qinpos, qintail;
- struct aic7xxx_scb *scbp;
-
- found = 0;
- qinpos = aic_inb(p, QINPOS);
- qintail = p->qinfifonext;
-
- p->qinfifonext = qinpos;
-
- while (qinpos != qintail)
- {
- scbp = p->scb_data->scb_array[p->qinfifo[qinpos++]];
- if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
- {
- /*
- * We found an scb that needs to be removed.
- */
- if (requeue && (queue != NULL))
- {
- if (scbp->flags & SCB_WAITINGQ)
- {
- scbq_remove(queue, scbp);
- scbq_remove(&p->waiting_scbs, scbp);
- scbq_remove(&p->delayed_scbs[TARGET_INDEX(scbp->cmd)], scbp);
- p->dev_active_cmds[TARGET_INDEX(scbp->cmd)]++;
- p->activescbs++;
- }
- scbq_insert_tail(queue, scbp);
- p->dev_active_cmds[TARGET_INDEX(scbp->cmd)]--;
- p->activescbs--;
- scbp->flags |= SCB_WAITINGQ;
- if ( !(scbp->tag_action & TAG_ENB) )
- {
- aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun,
- TRUE);
- }
- }
- else if (requeue)
- {
- p->qinfifo[p->qinfifonext++] = scbp->hscb->tag;
- }
- else
- {
- /*
- * Preserve any SCB_RECOVERY_SCB flags on this scb then set the
- * flags we were called with, presumeably so aic7xxx_run_done_queue
- * can find this scb
- */
- scbp->flags = flags | (scbp->flags & SCB_RECOVERY_SCB);
- if (aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun,
- FALSE) == scbp->hscb->tag)
- {
- aic7xxx_index_busy_target(p, scbp->hscb->target_channel_lun,
- TRUE);
- }
- }
- found++;
- }
- else
- {
- p->qinfifo[p->qinfifonext++] = scbp->hscb->tag;
- }
- }
- /*
- * Now that we've done the work, clear out any left over commands in the
- * qinfifo and update the KERNEL_QINPOS down on the card.
- *
- * NOTE: This routine expect the sequencer to already be paused when
- * it is run....make sure it's that way!
- */
- qinpos = p->qinfifonext;
- while(qinpos != qintail)
- {
- p->qinfifo[qinpos++] = SCB_LIST_NULL;
- }
- if (p->features & AHC_QUEUE_REGS)
- aic_outb(p, p->qinfifonext, HNSCB_QOFF);
- else
- aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
-
- return (found);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_scb_on_qoutfifo
- *
- * Description:
- * Is the scb that was passed to us currently on the qoutfifo?
- *-F*************************************************************************/
-static int
-aic7xxx_scb_on_qoutfifo(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- int i=0;
-
- while(p->qoutfifo[(p->qoutfifonext + i) & 0xff ] != SCB_LIST_NULL)
- {
- if(p->qoutfifo[(p->qoutfifonext + i) & 0xff ] == scb->hscb->tag)
- return TRUE;
- else
- i++;
- }
- return FALSE;
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_reset_device
- *
- * Description:
- * The device at the given target/channel has been reset. Abort
- * all active and queued scbs for that target/channel. This function
- * need not worry about linked next pointers because if was a MSG_ABORT_TAG
- * then we had a tagged command (no linked next), if it was MSG_ABORT or
- * MSG_BUS_DEV_RESET then the device won't know about any commands any more
- * and no busy commands will exist, and if it was a bus reset, then nothing
- * knows about any linked next commands any more. In all cases, we don't
- * need to worry about the linked next or busy scb, we just need to clear
- * them.
- *-F*************************************************************************/
-static void
-aic7xxx_reset_device(struct aic7xxx_host *p, int target, int channel,
- int lun, unsigned char tag)
-{
- struct aic7xxx_scb *scbp;
- unsigned char active_scb, tcl;
- int i = 0, j, init_lists = FALSE;
-
- /*
- * Restore this when we're done
- */
- active_scb = aic_inb(p, SCBPTR);
-
- if (aic7xxx_verbose & (VERBOSE_RESET_PROCESS | VERBOSE_ABORT_PROCESS))
- printk(INFO_LEAD "Reset device, active_scb %d\n",
- p->host_no, channel, target, lun, active_scb);
- /*
- * Deal with the busy target and linked next issues.
- */
- {
- int min_target, max_target;
- struct aic7xxx_scb *scbp, *prev_scbp;
-
- /* Make all targets 'relative' to bus A. */
- if (target == ALL_TARGETS)
- {
- switch (channel)
- {
- case 0:
- min_target = 0;
- max_target = (p->features & AHC_WIDE) ? 15 : 7;
- break;
- case 1:
- min_target = 8;
- max_target = 15;
- break;
- case ALL_CHANNELS:
- default:
- min_target = 0;
- max_target = (p->features & (AHC_TWIN|AHC_WIDE)) ? 15 : 7;
- break;
- }
- }
- else
- {
- min_target = target | (channel << 3);
- max_target = min_target;
- }
-
-
- for (i = min_target; i <= max_target; i++)
- {
- if ( i == p->scsi_id )
- {
- continue;
- }
- if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
- printk(INFO_LEAD "Cleaning up status information "
- "and delayed_scbs.\n", p->host_no, channel, i, lun);
- p->dev_flags[i] &= ~(BUS_DEVICE_RESET_PENDING | DEVICE_PARITY_ERROR);
- if ( tag == SCB_LIST_NULL )
- {
- p->dev_flags[i] |= DEVICE_PRINT_DTR | DEVICE_RESET_DELAY;
- p->dev_expires[i] = jiffies + (4 * HZ);
- p->dev_timer_active |= (0x01 << i);
- p->dev_last_queue_full_count[i] = 0;
- p->dev_last_queue_full[i] = 0;
- p->dev_temp_queue_depth[i] =
- p->dev_max_queue_depth[i];
- }
- for(j=0; j<MAX_LUNS; j++)
- {
- if (channel == 1)
- tcl = ((i << 4) & 0x70) | (channel << 3) | j;
- else
- tcl = (i << 4) | (channel << 3) | j;
- if ( (aic7xxx_index_busy_target(p, tcl, FALSE) == tag) ||
- (tag == SCB_LIST_NULL) )
- aic7xxx_index_busy_target(p, tcl, /* unbusy */ TRUE);
- }
- j = 0;
- prev_scbp = NULL;
- scbp = p->delayed_scbs[i].head;
- while ( (scbp != NULL) && (j++ <= (p->scb_data->numscbs + 1)) )
- {
- prev_scbp = scbp;
- scbp = scbp->q_next;
- if ( prev_scbp == scbp )
- {
- if (aic7xxx_verbose & (VERBOSE_ABORT | VERBOSE_RESET))
- printk(WARN_LEAD "Yikes!! scb->q_next == scb "
- "in the delayed_scbs queue!\n", p->host_no, channel, i, lun);
- scbp = NULL;
- prev_scbp->q_next = NULL;
- p->delayed_scbs[i].tail = prev_scbp;
- }
- if (aic7xxx_match_scb(p, prev_scbp, target, channel, lun, tag))
- {
- scbq_remove(&p->delayed_scbs[i], prev_scbp);
- if (prev_scbp->flags & SCB_WAITINGQ)
- {
- p->dev_active_cmds[i]++;
- p->activescbs++;
- }
- prev_scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
- prev_scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
- }
- }
- if ( j > (p->scb_data->maxscbs + 1) )
- {
- if (aic7xxx_verbose & (VERBOSE_ABORT | VERBOSE_RESET))
- printk(WARN_LEAD "Yikes!! There's a loop in the "
- "delayed_scbs queue!\n", p->host_no, channel, i, lun);
- scbq_init(&p->delayed_scbs[i]);
- }
- if ( !(p->dev_timer_active & (0x01 << MAX_TARGETS)) ||
- time_after_eq(p->dev_timer.expires, p->dev_expires[i]) )
- {
- mod_timer(&p->dev_timer, p->dev_expires[i]);
- p->dev_timer_active |= (0x01 << MAX_TARGETS);
- }
- }
- }
-
- if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
- printk(INFO_LEAD "Cleaning QINFIFO.\n", p->host_no, channel, target, lun );
- aic7xxx_search_qinfifo(p, target, channel, lun, tag,
- SCB_RESET | SCB_QUEUED_FOR_DONE, /* requeue */ FALSE, NULL);
-
-/*
- * Search the waiting_scbs queue for matches, this catches any SCB_QUEUED
- * ABORT/RESET commands.
- */
- if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
- printk(INFO_LEAD "Cleaning waiting_scbs.\n", p->host_no, channel,
- target, lun );
- {
- struct aic7xxx_scb *scbp, *prev_scbp;
-
- j = 0;
- prev_scbp = NULL;
- scbp = p->waiting_scbs.head;
- while ( (scbp != NULL) && (j++ <= (p->scb_data->numscbs + 1)) )
- {
- prev_scbp = scbp;
- scbp = scbp->q_next;
- if ( prev_scbp == scbp )
- {
- if (aic7xxx_verbose & (VERBOSE_ABORT | VERBOSE_RESET))
- printk(WARN_LEAD "Yikes!! scb->q_next == scb "
- "in the waiting_scbs queue!\n", p->host_no, CTL_OF_SCB(scbp));
- scbp = NULL;
- prev_scbp->q_next = NULL;
- p->waiting_scbs.tail = prev_scbp;
- }
- if (aic7xxx_match_scb(p, prev_scbp, target, channel, lun, tag))
- {
- scbq_remove(&p->waiting_scbs, prev_scbp);
- if (prev_scbp->flags & SCB_WAITINGQ)
- {
- p->dev_active_cmds[TARGET_INDEX(prev_scbp->cmd)]++;
- p->activescbs++;
- }
- prev_scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
- prev_scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
- }
- }
- if ( j > (p->scb_data->maxscbs + 1) )
- {
- if (aic7xxx_verbose & (VERBOSE_ABORT | VERBOSE_RESET))
- printk(WARN_LEAD "Yikes!! There's a loop in the "
- "waiting_scbs queue!\n", p->host_no, channel, target, lun);
- scbq_init(&p->waiting_scbs);
- }
- }
-
-
- /*
- * Search waiting for selection list.
- */
- if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
- printk(INFO_LEAD "Cleaning waiting for selection "
- "list.\n", p->host_no, channel, target, lun);
- {
- unsigned char next, prev, scb_index;
-
- next = aic_inb(p, WAITING_SCBH); /* Start at head of list. */
- prev = SCB_LIST_NULL;
- j = 0;
- while ( (next != SCB_LIST_NULL) && (j++ <= (p->scb_data->maxscbs + 1)) )
- {
- aic_outb(p, next, SCBPTR);
- scb_index = aic_inb(p, SCB_TAG);
- if (scb_index >= p->scb_data->numscbs)
- {
- /*
- * No aic7xxx_verbose check here.....we want to see this since it
- * means either the kernel driver or the sequencer screwed things up
- */
- printk(WARN_LEAD "Waiting List inconsistency; SCB index=%d, "
- "numscbs=%d\n", p->host_no, channel, target, lun, scb_index,
- p->scb_data->numscbs);
- next = aic_inb(p, SCB_NEXT);
- aic7xxx_add_curscb_to_free_list(p);
- }
- else
- {
- scbp = p->scb_data->scb_array[scb_index];
- if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
- {
- next = aic7xxx_abort_waiting_scb(p, scbp, next, prev);
- if (scbp->flags & SCB_WAITINGQ)
- {
- p->dev_active_cmds[TARGET_INDEX(scbp->cmd)]++;
- p->activescbs++;
- }
- scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
- scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
- if (prev == SCB_LIST_NULL)
- {
- /*
- * This is either the first scb on the waiting list, or we
- * have already yanked the first and haven't left any behind.
- * Either way, we need to turn off the selection hardware if
- * it isn't already off.
- */
- aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
- aic_outb(p, CLRSELTIMEO, CLRSINT1);
- }
- }
- else
- {
- prev = next;
- next = aic_inb(p, SCB_NEXT);
- }
- }
- }
- if ( j > (p->scb_data->maxscbs + 1) )
- {
- printk(WARN_LEAD "Yikes!! There is a loop in the waiting for "
- "selection list!\n", p->host_no, channel, target, lun);
- init_lists = TRUE;
- }
- }
-
- /*
- * Go through disconnected list and remove any entries we have queued
- * for completion, zeroing their control byte too.
- */
- if (aic7xxx_verbose & (VERBOSE_ABORT_PROCESS | VERBOSE_RESET_PROCESS))
- printk(INFO_LEAD "Cleaning disconnected scbs "
- "list.\n", p->host_no, channel, target, lun);
- if (p->flags & AHC_PAGESCBS)
- {
- unsigned char next, prev, scb_index;
-
- next = aic_inb(p, DISCONNECTED_SCBH);
- prev = SCB_LIST_NULL;
- j = 0;
- while ( (next != SCB_LIST_NULL) && (j++ <= (p->scb_data->maxscbs + 1)) )
- {
- aic_outb(p, next, SCBPTR);
- scb_index = aic_inb(p, SCB_TAG);
- if (scb_index > p->scb_data->numscbs)
- {
- printk(WARN_LEAD "Disconnected List inconsistency; SCB index=%d, "
- "numscbs=%d\n", p->host_no, channel, target, lun, scb_index,
- p->scb_data->numscbs);
- next = aic7xxx_rem_scb_from_disc_list(p, next, prev);
- }
- else
- {
- scbp = p->scb_data->scb_array[scb_index];
- if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
- {
- next = aic7xxx_rem_scb_from_disc_list(p, next, prev);
- if (scbp->flags & SCB_WAITINGQ)
- {
- p->dev_active_cmds[TARGET_INDEX(scbp->cmd)]++;
- p->activescbs++;
- }
- scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
- scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
- scbp->hscb->control = 0;
- }
- else
- {
- prev = next;
- next = aic_inb(p, SCB_NEXT);
- }
- }
- }
- if ( j > (p->scb_data->maxscbs + 1) )
- {
- printk(WARN_LEAD "Yikes!! There is a loop in the disconnected list!\n",
- p->host_no, channel, target, lun);
- init_lists = TRUE;
- }
- }
-
- /*
- * Walk the free list making sure no entries on the free list have
- * a valid SCB_TAG value or SCB_CONTROL byte.
- */
- if (p->flags & AHC_PAGESCBS)
- {
- unsigned char next;
-
- j = 0;
- next = aic_inb(p, FREE_SCBH);
- if ( (next >= p->scb_data->maxhscbs) && (next != SCB_LIST_NULL) )
- {
- printk(WARN_LEAD "Bogus FREE_SCBH!.\n", p->host_no, channel,
- target, lun);
- init_lists = TRUE;
- next = SCB_LIST_NULL;
- }
- while ( (next != SCB_LIST_NULL) && (j++ <= (p->scb_data->maxscbs + 1)) )
- {
- aic_outb(p, next, SCBPTR);
- if (aic_inb(p, SCB_TAG) < p->scb_data->numscbs)
- {
- printk(WARN_LEAD "Free list inconsistency!.\n", p->host_no, channel,
- target, lun);
- init_lists = TRUE;
- next = SCB_LIST_NULL;
- }
- else
- {
- aic_outb(p, SCB_LIST_NULL, SCB_TAG);
- aic_outb(p, 0, SCB_CONTROL);
- next = aic_inb(p, SCB_NEXT);
- }
- }
- if ( j > (p->scb_data->maxscbs + 1) )
- {
- printk(WARN_LEAD "Yikes!! There is a loop in the free list!\n",
- p->host_no, channel, target, lun);
- init_lists = TRUE;
- }
- }
-
- /*
- * Go through the hardware SCB array looking for commands that
- * were active but not on any list.
- */
- if (init_lists)
- {
- aic_outb(p, SCB_LIST_NULL, FREE_SCBH);
- aic_outb(p, SCB_LIST_NULL, WAITING_SCBH);
- aic_outb(p, SCB_LIST_NULL, DISCONNECTED_SCBH);
- }
- for (i = p->scb_data->maxhscbs - 1; i >= 0; i--)
- {
- unsigned char scbid;
-
- aic_outb(p, i, SCBPTR);
- if (init_lists)
- {
- aic_outb(p, SCB_LIST_NULL, SCB_TAG);
- aic_outb(p, SCB_LIST_NULL, SCB_NEXT);
- aic_outb(p, 0, SCB_CONTROL);
- aic7xxx_add_curscb_to_free_list(p);
- }
- else
- {
- scbid = aic_inb(p, SCB_TAG);
- if (scbid < p->scb_data->numscbs)
- {
- scbp = p->scb_data->scb_array[scbid];
- if (aic7xxx_match_scb(p, scbp, target, channel, lun, tag))
- {
- aic_outb(p, 0, SCB_CONTROL);
- aic_outb(p, SCB_LIST_NULL, SCB_TAG);
- aic7xxx_add_curscb_to_free_list(p);
- }
- }
- }
- }
-
- /*
- * Go through the entire SCB array now and look for commands for
- * for this target that are stillactive. These are other (most likely
- * tagged) commands that were disconnected when the reset occurred.
- * Any commands we find here we know this about, it wasn't on any queue,
- * it wasn't in the qinfifo, it wasn't in the disconnected or waiting
- * lists, so it really must have been a paged out SCB. In that case,
- * we shouldn't need to bother with updating any counters, just mark
- * the correct flags and go on.
- */
- for (i = 0; i < p->scb_data->numscbs; i++)
- {
- scbp = p->scb_data->scb_array[i];
- if ((scbp->flags & SCB_ACTIVE) &&
- aic7xxx_match_scb(p, scbp, target, channel, lun, tag) &&
- !aic7xxx_scb_on_qoutfifo(p, scbp))
- {
- if (scbp->flags & SCB_WAITINGQ)
- {
- scbq_remove(&p->waiting_scbs, scbp);
- scbq_remove(&p->delayed_scbs[TARGET_INDEX(scbp->cmd)], scbp);
- p->dev_active_cmds[TARGET_INDEX(scbp->cmd)]++;
- p->activescbs++;
- }
- scbp->flags |= SCB_RESET | SCB_QUEUED_FOR_DONE;
- scbp->flags &= ~(SCB_ACTIVE | SCB_WAITINGQ);
- }
- }
-
- aic_outb(p, active_scb, SCBPTR);
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_clear_intstat
- *
- * Description:
- * Clears the interrupt status.
- *-F*************************************************************************/
-static void
-aic7xxx_clear_intstat(struct aic7xxx_host *p)
-{
- /* Clear any interrupt conditions this may have caused. */
- aic_outb(p, CLRSELDO | CLRSELDI | CLRSELINGO, CLRSINT0);
- aic_outb(p, CLRSELTIMEO | CLRATNO | CLRSCSIRSTI | CLRBUSFREE | CLRSCSIPERR |
- CLRPHASECHG | CLRREQINIT, CLRSINT1);
- aic_outb(p, CLRSCSIINT | CLRSEQINT | CLRBRKADRINT | CLRPARERR, CLRINT);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_reset_current_bus
- *
- * Description:
- * Reset the current SCSI bus.
- *-F*************************************************************************/
-static void
-aic7xxx_reset_current_bus(struct aic7xxx_host *p)
-{
-
- /* Disable reset interrupts. */
- aic_outb(p, aic_inb(p, SIMODE1) & ~ENSCSIRST, SIMODE1);
-
- /* Turn off the bus' current operations, after all, we shouldn't have any
- * valid commands left to cause a RSELI and SELO once we've tossed the
- * bus away with this reset, so we might as well shut down the sequencer
- * until the bus is restarted as oppossed to saving the current settings
- * and restoring them (which makes no sense to me). */
-
- /* Turn on the bus reset. */
- aic_outb(p, aic_inb(p, SCSISEQ) | SCSIRSTO, SCSISEQ);
- while ( (aic_inb(p, SCSISEQ) & SCSIRSTO) == 0)
- mdelay(5);
-
- /*
- * Some of the new Ultra2 chipsets need a longer delay after a chip
- * reset than just the init setup creates, so we have to delay here
- * before we go into a reset in order to make the chips happy.
- */
- if (p->features & AHC_ULTRA2)
- mdelay(250);
- else
- mdelay(50);
-
- /* Turn off the bus reset. */
- aic_outb(p, 0, SCSISEQ);
- mdelay(10);
-
- aic7xxx_clear_intstat(p);
- /* Re-enable reset interrupts. */
- aic_outb(p, aic_inb(p, SIMODE1) | ENSCSIRST, SIMODE1);
-
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_reset_channel
- *
- * Description:
- * Reset the channel.
- *-F*************************************************************************/
-static void
-aic7xxx_reset_channel(struct aic7xxx_host *p, int channel, int initiate_reset)
-{
- unsigned long offset_min, offset_max;
- unsigned char sblkctl;
- int cur_channel;
-
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Reset channel called, %s initiate reset.\n",
- p->host_no, channel, -1, -1, (initiate_reset==TRUE) ? "will" : "won't" );
-
-
- if (channel == 1)
- {
- p->needsdtr |= (p->needsdtr_copy & 0xFF00);
- p->dtr_pending &= 0x00FF;
- offset_min = 8;
- offset_max = 16;
- }
- else
- {
- if (p->features & AHC_TWIN)
- {
- /* Channel A */
- p->needsdtr |= (p->needsdtr_copy & 0x00FF);
- p->dtr_pending &= 0xFF00;
- offset_min = 0;
- offset_max = 8;
- }
- else
- {
- p->needppr = p->needppr_copy;
- p->needsdtr = p->needsdtr_copy;
- p->needwdtr = p->needwdtr_copy;
- p->dtr_pending = 0x0;
- offset_min = 0;
- if (p->features & AHC_WIDE)
- {
- offset_max = 16;
- }
- else
- {
- offset_max = 8;
- }
- }
- }
-
- while (offset_min < offset_max)
- {
- /*
- * Revert to async/narrow transfers until we renegotiate.
- */
- aic_outb(p, 0, TARG_SCSIRATE + offset_min);
- if (p->features & AHC_ULTRA2)
- {
- aic_outb(p, 0, TARG_OFFSET + offset_min);
- }
- offset_min++;
- }
-
- /*
- * Reset the bus and unpause/restart the controller
- */
- sblkctl = aic_inb(p, SBLKCTL);
- if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
- cur_channel = (sblkctl & SELBUSB) >> 3;
- else
- cur_channel = 0;
- if ( (cur_channel != channel) && (p->features & AHC_TWIN) )
- {
- /*
- * Case 1: Command for another bus is active
- */
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Stealthily resetting idle channel.\n", p->host_no,
- channel, -1, -1);
- /*
- * Stealthily reset the other bus without upsetting the current bus.
- */
- aic_outb(p, sblkctl ^ SELBUSB, SBLKCTL);
- aic_outb(p, aic_inb(p, SIMODE1) & ~ENBUSFREE, SIMODE1);
- if (initiate_reset)
- {
- aic7xxx_reset_current_bus(p);
- }
- aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), SCSISEQ);
- aic7xxx_clear_intstat(p);
- aic_outb(p, sblkctl, SBLKCTL);
- }
- else
- {
- /*
- * Case 2: A command from this bus is active or we're idle.
- */
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Resetting currently active channel.\n", p->host_no,
- channel, -1, -1);
- aic_outb(p, aic_inb(p, SIMODE1) & ~(ENBUSFREE|ENREQINIT),
- SIMODE1);
- p->flags &= ~AHC_HANDLING_REQINITS;
- p->msg_type = MSG_TYPE_NONE;
- p->msg_len = 0;
- if (initiate_reset)
- {
- aic7xxx_reset_current_bus(p);
- }
- aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP), SCSISEQ);
- aic7xxx_clear_intstat(p);
- }
- if (aic7xxx_verbose & VERBOSE_RESET_RETURN)
- printk(INFO_LEAD "Channel reset\n", p->host_no, channel, -1, -1);
- /*
- * Clean up all the state information for the pending transactions
- * on this bus.
- */
- aic7xxx_reset_device(p, ALL_TARGETS, channel, ALL_LUNS, SCB_LIST_NULL);
-
- if ( !(p->features & AHC_TWIN) )
- {
- restart_sequencer(p);
- }
-
- return;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_run_waiting_queues
- *
- * Description:
- * Scan the awaiting_scbs queue downloading and starting as many
- * scbs as we can.
- *-F*************************************************************************/
-static void
-aic7xxx_run_waiting_queues(struct aic7xxx_host *p)
-{
- struct aic7xxx_scb *scb;
- int tindex;
- int sent;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags = 0;
-#endif
-
-
- if (p->waiting_scbs.head == NULL)
- return;
-
- sent = 0;
-
- /*
- * First handle SCBs that are waiting but have been assigned a slot.
- */
- DRIVER_LOCK
- while ((scb = scbq_remove_head(&p->waiting_scbs)) != NULL)
- {
- tindex = TARGET_INDEX(scb->cmd);
- if ( !scb->tag_action && (p->tagenable & (1<<tindex)) )
- {
- p->dev_temp_queue_depth[tindex] = 1;
- }
- if ( (p->dev_active_cmds[tindex] >=
- p->dev_temp_queue_depth[tindex]) ||
- (p->dev_flags[tindex] & (DEVICE_RESET_DELAY|DEVICE_WAS_BUSY)) ||
- (p->flags & AHC_RESET_DELAY) )
- {
- scbq_insert_tail(&p->delayed_scbs[tindex], scb);
- }
- else
- {
- scb->flags &= ~SCB_WAITINGQ;
- p->dev_active_cmds[tindex]++;
- p->activescbs++;
- if ( !(scb->tag_action) )
- {
- aic7xxx_busy_target(p, scb);
- }
- p->qinfifo[p->qinfifonext++] = scb->hscb->tag;
- sent++;
- }
- }
- if (sent)
- {
- if (p->features & AHC_QUEUE_REGS)
- aic_outb(p, p->qinfifonext, HNSCB_QOFF);
- else
- {
- pause_sequencer(p);
- aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
- unpause_sequencer(p, FALSE);
- }
- if (p->activescbs > p->max_activescbs)
- p->max_activescbs = p->activescbs;
- }
- DRIVER_UNLOCK
-}
-
-#ifdef CONFIG_PCI
-
-#define DPE 0x80
-#define SSE 0x40
-#define RMA 0x20
-#define RTA 0x10
-#define STA 0x08
-#define DPR 0x01
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_pci_intr
- *
- * Description:
- * Check the scsi card for PCI errors and clear the interrupt
- *
- * NOTE: If you don't have this function and a 2940 card encounters
- * a PCI error condition, the machine will end up locked as the
- * interrupt handler gets slammed with non-stop PCI error interrupts
- *-F*************************************************************************/
-static void
-aic7xxx_pci_intr(struct aic7xxx_host *p)
-{
- unsigned char status1;
-
- pci_read_config_byte(p->pdev, PCI_STATUS + 1, &status1);
-
- if ( (status1 & DPE) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
- printk(WARN_LEAD "Data Parity Error during PCI address or PCI write"
- "phase.\n", p->host_no, -1, -1, -1);
- if ( (status1 & SSE) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
- printk(WARN_LEAD "Signal System Error Detected\n", p->host_no,
- -1, -1, -1);
- if ( (status1 & RMA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
- printk(WARN_LEAD "Received a PCI Master Abort\n", p->host_no,
- -1, -1, -1);
- if ( (status1 & RTA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
- printk(WARN_LEAD "Received a PCI Target Abort\n", p->host_no,
- -1, -1, -1);
- if ( (status1 & STA) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
- printk(WARN_LEAD "Signaled a PCI Target Abort\n", p->host_no,
- -1, -1, -1);
- if ( (status1 & DPR) && (aic7xxx_verbose & VERBOSE_MINOR_ERROR) )
- printk(WARN_LEAD "Data Parity Error has been reported via PCI pin "
- "PERR#\n", p->host_no, -1, -1, -1);
-
- pci_write_config_byte(p->pdev, PCI_STATUS + 1, status1);
- if (status1 & (DPR|RMA|RTA))
- aic_outb(p, CLRPARERR, CLRINT);
-
- if ( (aic7xxx_panic_on_abort) && (p->spurious_int > 500) )
- aic7xxx_panic_abort(p, NULL);
-
-}
-#endif /* CONFIG_PCI */
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_timer
- *
- * Description:
- * Take expired extries off of delayed queues and place on waiting queue
- * then run waiting queue to start commands.
- ***************************************************************************/
-static void
-aic7xxx_timer(struct aic7xxx_host *p)
-{
- int i, j;
- unsigned long cpu_flags = 0;
- struct aic7xxx_scb *scb;
-
- spin_lock_irqsave(&io_request_lock, cpu_flags);
- p->dev_timer_active &= ~(0x01 << MAX_TARGETS);
- if ( (p->dev_timer_active & (0x01 << p->scsi_id)) &&
- time_after_eq(jiffies, p->dev_expires[p->scsi_id]) )
- {
- p->flags &= ~AHC_RESET_DELAY;
- p->dev_timer_active &= ~(0x01 << p->scsi_id);
- }
- for(i=0; i<MAX_TARGETS; i++)
- {
- if ( (i != p->scsi_id) &&
- (p->dev_timer_active & (0x01 << i)) &&
- time_after_eq(jiffies, p->dev_expires[i]) )
- {
- p->dev_timer_active &= ~(0x01 << i);
- p->dev_flags[i] &= ~(DEVICE_RESET_DELAY|DEVICE_WAS_BUSY);
- p->dev_temp_queue_depth[i] = p->dev_max_queue_depth[i];
- j = 0;
- while ( ((scb = scbq_remove_head(&p->delayed_scbs[i])) != NULL) &&
- (j++ < p->scb_data->numscbs) )
- {
- scbq_insert_tail(&p->waiting_scbs, scb);
- }
- if (j == p->scb_data->numscbs)
- {
- printk(INFO_LEAD "timer: Yikes, loop in delayed_scbs list.\n",
- p->host_no, 0, i, -1);
- scbq_init(&p->delayed_scbs[i]);
- scbq_init(&p->waiting_scbs);
- /*
- * Well, things are screwed now, wait for a reset to clean the junk
- * out.
- */
- }
- }
- else if ( p->dev_timer_active & (0x01 << i) )
- {
- if ( p->dev_timer_active & (0x01 << MAX_TARGETS) )
- {
- if ( time_after_eq(p->dev_timer.expires, p->dev_expires[i]) )
- {
- p->dev_timer.expires = p->dev_expires[i];
- }
- }
- else
- {
- p->dev_timer.expires = p->dev_expires[i];
- p->dev_timer_active |= (0x01 << MAX_TARGETS);
- }
- }
- }
- if ( p->dev_timer_active & (0x01 << MAX_TARGETS) )
- {
- add_timer(&p->dev_timer);
- }
-
- aic7xxx_run_waiting_queues(p);
- spin_unlock_irqrestore(&io_request_lock, cpu_flags);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_construct_ppr
- *
- * Description:
- * Build up a Parallel Protocol Request message for use with SCSI-3
- * devices.
- *-F*************************************************************************/
-static void
-aic7xxx_construct_ppr(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- int tindex = TARGET_INDEX(scb->cmd);
-
- p->msg_buf[p->msg_index++] = MSG_EXTENDED;
- p->msg_buf[p->msg_index++] = MSG_EXT_PPR_LEN;
- p->msg_buf[p->msg_index++] = MSG_EXT_PPR;
- p->msg_buf[p->msg_index++] = p->transinfo[tindex].goal_period;
- p->msg_buf[p->msg_index++] = 0;
- p->msg_buf[p->msg_index++] = p->transinfo[tindex].goal_offset;
- p->msg_buf[p->msg_index++] = p->transinfo[tindex].goal_width;
- p->msg_buf[p->msg_index++] = p->transinfo[tindex].goal_options;
- p->msg_len += 8;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_construct_sdtr
- *
- * Description:
- * Constucts a synchronous data transfer message in the message
- * buffer on the sequencer.
- *-F*************************************************************************/
-static void
-aic7xxx_construct_sdtr(struct aic7xxx_host *p, unsigned char period,
- unsigned char offset)
-{
- p->msg_buf[p->msg_index++] = MSG_EXTENDED;
- p->msg_buf[p->msg_index++] = MSG_EXT_SDTR_LEN;
- p->msg_buf[p->msg_index++] = MSG_EXT_SDTR;
- p->msg_buf[p->msg_index++] = period;
- p->msg_buf[p->msg_index++] = offset;
- p->msg_len += 5;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_construct_wdtr
- *
- * Description:
- * Constucts a wide data transfer message in the message buffer
- * on the sequencer.
- *-F*************************************************************************/
-static void
-aic7xxx_construct_wdtr(struct aic7xxx_host *p, unsigned char bus_width)
-{
- p->msg_buf[p->msg_index++] = MSG_EXTENDED;
- p->msg_buf[p->msg_index++] = MSG_EXT_WDTR_LEN;
- p->msg_buf[p->msg_index++] = MSG_EXT_WDTR;
- p->msg_buf[p->msg_index++] = bus_width;
- p->msg_len += 4;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_calc_residual
- *
- * Description:
- * Calculate the residual data not yet transferred.
- *-F*************************************************************************/
-static void
-aic7xxx_calculate_residual (struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- struct aic7xxx_hwscb *hscb;
- Scsi_Cmnd *cmd;
- int actual, i;
-
- cmd = scb->cmd;
- hscb = scb->hscb;
-
- /*
- * Don't destroy valid residual information with
- * residual coming from a check sense operation.
- */
- if (((scb->hscb->control & DISCONNECTED) == 0) &&
- (scb->flags & SCB_SENSE) == 0)
- {
- /*
- * We had an underflow. At this time, there's only
- * one other driver that bothers to check for this,
- * and cmd->underflow seems to be set rather half-
- * heartedly in the higher-level SCSI code.
- */
- actual = scb->sg_length;
- for (i=1; i < hscb->residual_SG_segment_count; i++)
- {
- actual -= scb->sg_list[scb->sg_count - i].length;
- }
- actual -= (hscb->residual_data_count[2] << 16) |
- (hscb->residual_data_count[1] << 8) |
- hscb->residual_data_count[0];
-
- if (actual < cmd->underflow)
- {
- if (aic7xxx_verbose & VERBOSE_MINOR_ERROR)
- printk(INFO_LEAD "Underflow - Wanted %u, %s %u, residual SG "
- "count %d.\n", p->host_no, CTL_OF_SCB(scb), cmd->underflow,
- (cmd->request.cmd == WRITE) ? "wrote" : "read", actual,
- hscb->residual_SG_segment_count);
- aic7xxx_error(cmd) = DID_RETRY_COMMAND;
- aic7xxx_status(cmd) = hscb->target_status;
- }
- }
-
- /*
- * Clean out the residual information in the SCB for the
- * next consumer.
- */
- hscb->residual_data_count[2] = 0;
- hscb->residual_data_count[1] = 0;
- hscb->residual_data_count[0] = 0;
- hscb->residual_SG_segment_count = 0;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_handle_device_reset
- *
- * Description:
- * Interrupt handler for sequencer interrupts (SEQINT).
- *-F*************************************************************************/
-static void
-aic7xxx_handle_device_reset(struct aic7xxx_host *p, int target, int channel)
-{
- unsigned short targ_mask;
- unsigned char tindex = target;
-
- tindex |= ((channel & 0x01) << 3);
-
- targ_mask = (0x01 << tindex);
- /*
- * Go back to async/narrow transfers and renegotiate.
- */
- p->needppr |= (p->needppr_copy & targ_mask);
- p->needsdtr |= (p->needsdtr_copy & targ_mask);
- p->needwdtr |= (p->needwdtr_copy & targ_mask);
- p->dtr_pending &= ~targ_mask;
- aic_outb(p, 0, TARG_SCSIRATE + tindex);
- if (p->features & AHC_ULTRA2)
- aic_outb(p, 0, TARG_OFFSET + tindex);
- aic7xxx_reset_device(p, target, channel, ALL_LUNS, SCB_LIST_NULL);
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Bus Device Reset delivered.\n", p->host_no, channel,
- target, -1);
- aic7xxx_run_done_queue(p, /*complete*/ TRUE);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_handle_seqint
- *
- * Description:
- * Interrupt handler for sequencer interrupts (SEQINT).
- *-F*************************************************************************/
-static void
-aic7xxx_handle_seqint(struct aic7xxx_host *p, unsigned char intstat)
-{
- struct aic7xxx_scb *scb;
- unsigned short target_mask;
- unsigned char target, lun, tindex;
- unsigned char queue_flag = FALSE;
- char channel;
-
- target = ((aic_inb(p, SAVED_TCL) >> 4) & 0x0f);
- if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
- channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3;
- else
- channel = 0;
- tindex = target + (channel << 3);
- lun = aic_inb(p, SAVED_TCL) & 0x07;
- target_mask = (0x01 << tindex);
-
- /*
- * Go ahead and clear the SEQINT now, that avoids any interrupt race
- * conditions later on in case we enable some other interrupt.
- */
- aic_outb(p, CLRSEQINT, CLRINT);
- switch (intstat & SEQINT_MASK)
- {
- case NO_MATCH:
- {
- aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP),
- SCSISEQ);
- printk(WARN_LEAD "No active SCB for reconnecting target - Issuing "
- "BUS DEVICE RESET.\n", p->host_no, channel, target, lun);
- printk(WARN_LEAD " SAVED_TCL=0x%x, ARG_1=0x%x, SEQADDR=0x%x\n",
- p->host_no, channel, target, lun,
- aic_inb(p, SAVED_TCL), aic_inb(p, ARG_1),
- (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0));
- if (aic7xxx_panic_on_abort)
- aic7xxx_panic_abort(p, NULL);
- }
- break;
-
- case SEND_REJECT:
- {
- if (aic7xxx_verbose & VERBOSE_MINOR_ERROR)
- printk(INFO_LEAD "Rejecting unknown message (0x%x) received from "
- "target, SEQ_FLAGS=0x%x\n", p->host_no, channel, target, lun,
- aic_inb(p, ACCUM), aic_inb(p, SEQ_FLAGS));
- }
- break;
-
- case NO_IDENT:
- {
- /*
- * The reconnecting target either did not send an identify
- * message, or did, but we didn't find an SCB to match and
- * before it could respond to our ATN/abort, it hit a dataphase.
- * The only safe thing to do is to blow it away with a bus
- * reset.
- */
- if (aic7xxx_verbose & (VERBOSE_SEQINT | VERBOSE_RESET_MID))
- printk(INFO_LEAD "Target did not send an IDENTIFY message; "
- "LASTPHASE 0x%x, SAVED_TCL 0x%x\n", p->host_no, channel, target,
- lun, aic_inb(p, LASTPHASE), aic_inb(p, SAVED_TCL));
-
- aic7xxx_reset_channel(p, channel, /*initiate reset*/ TRUE);
- aic7xxx_run_done_queue(p, TRUE);
-
- }
- break;
-
- case BAD_PHASE:
- if (aic_inb(p, LASTPHASE) == P_BUSFREE)
- {
- if (aic7xxx_verbose & VERBOSE_SEQINT)
- printk(INFO_LEAD "Missed busfree.\n", p->host_no, channel,
- target, lun);
- restart_sequencer(p);
- }
- else
- {
- if (aic7xxx_verbose & VERBOSE_SEQINT)
- printk(INFO_LEAD "Unknown scsi bus phase, continuing\n", p->host_no,
- channel, target, lun);
- }
- break;
-
- case EXTENDED_MSG:
- {
- p->msg_type = MSG_TYPE_INITIATOR_MSGIN;
- p->msg_len = 0;
- p->msg_index = 0;
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- printk(INFO_LEAD "Enabling REQINITs for MSG_IN\n", p->host_no,
- channel, target, lun);
-#endif
-
- /*
- * To actually receive the message, simply turn on
- * REQINIT interrupts and let our interrupt handler
- * do the rest (REQINIT should already be true).
- */
- p->flags |= AHC_HANDLING_REQINITS;
- aic_outb(p, aic_inb(p, SIMODE1) | ENREQINIT, SIMODE1);
-
- /*
- * We don't want the sequencer unpaused yet so we return early
- */
- return;
- }
-
- case REJECT_MSG:
- {
- /*
- * What we care about here is if we had an outstanding SDTR
- * or WDTR message for this target. If we did, this is a
- * signal that the target is refusing negotiation.
- */
- unsigned char scb_index;
- unsigned char last_msg;
-
- scb_index = aic_inb(p, SCB_TAG);
- scb = p->scb_data->scb_array[scb_index];
- last_msg = aic_inb(p, LAST_MSG);
-
- if ( (last_msg == MSG_IDENTIFYFLAG) &&
- (scb->tag_action) &&
- !(scb->flags & SCB_MSGOUT_BITS) )
- {
- if (scb->tag_action == MSG_ORDERED_Q_TAG)
- {
- /*
- * OK...the device seems able to accept tagged commands, but
- * not ordered tag commands, only simple tag commands. So, we
- * disable ordered tag commands and go on with life just like
- * normal.
- */
- p->orderedtag &= ~target_mask;
- scb->tag_action = MSG_SIMPLE_Q_TAG;
- scb->hscb->control &= ~SCB_TAG_TYPE;
- scb->hscb->control |= MSG_SIMPLE_Q_TAG;
- aic_outb(p, scb->hscb->control, SCB_CONTROL);
- /*
- * OK..we set the tag type to simple tag command, now we re-assert
- * ATNO and hope this will take us into the identify phase again
- * so we can resend the tag type and info to the device.
- */
- aic_outb(p, MSG_IDENTIFYFLAG, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
- }
- else if (scb->tag_action == MSG_SIMPLE_Q_TAG)
- {
- unsigned char i, reset = 0;
- struct aic7xxx_scb *scbp;
- int old_verbose;
- /*
- * Hmmmm....the device is flaking out on tagged commands. The
- * bad thing is that we already have tagged commands enabled in
- * the device struct in the mid level code. We also have a queue
- * set according to the tagged queue depth. Gonna have to live
- * with it by controlling our queue depth internally and making
- * sure we don't set the tagged command flag any more.
- */
- p->tagenable &= ~target_mask;
- p->orderedtag &= ~target_mask;
- p->dev_max_queue_depth[tindex] =
- p->dev_temp_queue_depth[tindex] = 1;
- /*
- * We set this command up as a bus device reset. However, we have
- * to clear the tag type as it's causing us problems. We shouldnt
- * have to worry about any other commands being active, since if
- * the device is refusing tagged commands, this should be the
- * first tagged command sent to the device, however, we do have
- * to worry about any other tagged commands that may already be
- * in the qinfifo. The easiest way to do this, is to issue a BDR,
- * send all the commands back to the mid level code, then let them
- * come back and get rebuilt as untagged commands.
- */
- scb->tag_action = 0;
- scb->hscb->control &= ~(TAG_ENB | SCB_TAG_TYPE);
- aic_outb(p, scb->hscb->control, SCB_CONTROL);
-
- old_verbose = aic7xxx_verbose;
- aic7xxx_verbose &= ~(VERBOSE_RESET|VERBOSE_ABORT);
- for (i=0; i!=p->scb_data->numscbs; i++)
- {
- scbp = p->scb_data->scb_array[i];
- if ((scbp->flags & SCB_ACTIVE) && (scbp != scb))
- {
- if (aic7xxx_match_scb(p, scbp, target, channel, lun, i))
- {
- aic7xxx_reset_device(p, target, channel, lun, i);
- reset++;
- }
- aic7xxx_run_done_queue(p, TRUE);
- }
- }
- aic7xxx_verbose = old_verbose;
- /*
- * Wait until after the for loop to set the busy index since
- * aic7xxx_reset_device will clear the busy index during its
- * operation.
- */
- aic7xxx_busy_target(p, scb);
- printk(INFO_LEAD "Device is refusing tagged commands, using "
- "untagged I/O.\n", p->host_no, channel, target, lun);
- aic_outb(p, MSG_IDENTIFYFLAG, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
- }
- }
- else if (scb->flags & SCB_MSGOUT_PPR)
- {
- /*
- * As per the draft specs, any device capable of supporting any of
- * the option values other than 0 are not allowed to reject the
- * PPR message. Instead, they must negotiate out what they do
- * support instead of rejecting our offering or else they cause
- * a parity error during msg_out phase to signal that they don't
- * like our settings.
- */
- p->needppr &= ~target_mask;
- p->needppr_copy &= ~target_mask;
- aic7xxx_set_width(p, target, channel, lun, MSG_EXT_WDTR_BUS_8_BIT,
- (AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE));
- aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
- AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE);
- p->transinfo[tindex].goal_options = 0;
- p->dtr_pending &= ~target_mask;
- scb->flags &= ~SCB_MSGOUT_BITS;
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Device is rejecting PPR messages, falling "
- "back.\n", p->host_no, channel, target, lun);
- }
- if ( p->transinfo[tindex].goal_width )
- {
- p->needwdtr |= target_mask;
- p->needwdtr_copy |= target_mask;
- p->dtr_pending |= target_mask;
- scb->flags |= SCB_MSGOUT_WDTR;
- }
- if ( p->transinfo[tindex].goal_offset )
- {
- p->needsdtr |= target_mask;
- p->needsdtr_copy |= target_mask;
- if( !(p->dtr_pending & target_mask) )
- {
- p->dtr_pending |= target_mask;
- scb->flags |= SCB_MSGOUT_SDTR;
- }
- }
- if ( p->dtr_pending & target_mask )
- {
- aic_outb(p, HOST_MSG, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
- }
- }
- else if (scb->flags & SCB_MSGOUT_WDTR)
- {
- /*
- * note 8bit xfers and clear flag
- */
- p->needwdtr &= ~target_mask;
- p->needwdtr_copy &= ~target_mask;
- p->dtr_pending &= ~target_mask;
- scb->flags &= ~SCB_MSGOUT_BITS;
- aic7xxx_set_width(p, target, channel, lun, MSG_EXT_WDTR_BUS_8_BIT,
- (AHC_TRANS_ACTIVE|AHC_TRANS_GOAL|AHC_TRANS_CUR));
- aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
- AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE);
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Device is rejecting WDTR messages, using "
- "narrow transfers.\n", p->host_no, channel, target, lun);
- }
- p->needsdtr |= (p->needsdtr_copy & target_mask);
- }
- else if (scb->flags & SCB_MSGOUT_SDTR)
- {
- /*
- * note asynch xfers and clear flag
- */
- p->needsdtr &= ~target_mask;
- p->needsdtr_copy &= ~target_mask;
- p->dtr_pending &= ~target_mask;
- scb->flags &= ~SCB_MSGOUT_SDTR;
- aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
- (AHC_TRANS_CUR|AHC_TRANS_ACTIVE|AHC_TRANS_GOAL));
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Device is rejecting SDTR messages, using "
- "async transfers.\n", p->host_no, channel, target, lun);
- }
- }
- else if (aic7xxx_verbose & VERBOSE_SEQINT)
- {
- /*
- * Otherwise, we ignore it.
- */
- printk(INFO_LEAD "Received MESSAGE_REJECT for unknown cause. "
- "Ignoring.\n", p->host_no, channel, target, lun);
- }
- }
- break;
-
- case BAD_STATUS:
- {
- unsigned char scb_index;
- struct aic7xxx_hwscb *hscb;
- Scsi_Cmnd *cmd;
-
- /* The sequencer will notify us when a command has an error that
- * would be of interest to the kernel. This allows us to leave
- * the sequencer running in the common case of command completes
- * without error. The sequencer will have DMA'd the SCB back
- * up to us, so we can reference the drivers SCB array.
- *
- * Set the default return value to 0 indicating not to send
- * sense. The sense code will change this if needed and this
- * reduces code duplication.
- */
- aic_outb(p, 0, RETURN_1);
- scb_index = aic_inb(p, SCB_TAG);
- if (scb_index > p->scb_data->numscbs)
- {
- printk(WARN_LEAD "Invalid SCB during SEQINT 0x%02x, SCB_TAG %d.\n",
- p->host_no, channel, target, lun, intstat, scb_index);
- break;
- }
- scb = p->scb_data->scb_array[scb_index];
- hscb = scb->hscb;
-
- if (!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
- {
- printk(WARN_LEAD "Invalid SCB during SEQINT 0x%x, scb %d, flags 0x%x,"
- " cmd 0x%lx.\n", p->host_no, channel, target, lun, intstat,
- scb_index, scb->flags, (unsigned long) scb->cmd);
- }
- else
- {
- cmd = scb->cmd;
- hscb->target_status = aic_inb(p, SCB_TARGET_STATUS);
- aic7xxx_status(cmd) = hscb->target_status;
-
- cmd->result = hscb->target_status;
-
- switch (status_byte(hscb->target_status))
- {
- case GOOD:
- if (aic7xxx_verbose & VERBOSE_SEQINT)
- printk(INFO_LEAD "Interrupted for status of GOOD???\n",
- p->host_no, CTL_OF_SCB(scb));
- break;
-
- case COMMAND_TERMINATED:
- case CHECK_CONDITION:
- if ( !(scb->flags & SCB_SENSE) )
- {
- /*
- * Send a sense command to the requesting target.
- * XXX - revisit this and get rid of the memcopys.
- */
- memcpy(scb->sense_cmd, &generic_sense[0],
- sizeof(generic_sense));
-
- scb->sense_cmd[1] = (cmd->lun << 5);
- scb->sense_cmd[4] = sizeof(cmd->sense_buffer);
-
- scb->sg_list[0].length =
- cpu_to_le32(sizeof(cmd->sense_buffer));
- scb->sg_list[0].address =
- cpu_to_le32(pci_map_single(p->pdev, cmd->sense_buffer,
- sizeof(cmd->sense_buffer),
- PCI_DMA_FROMDEVICE));
-
- /*
- * XXX - We should allow disconnection, but can't as it
- * might allow overlapped tagged commands.
- */
- /* hscb->control &= DISCENB; */
- hscb->control = 0;
- hscb->target_status = 0;
- hscb->SG_list_pointer =
- cpu_to_le32(SCB_DMA_ADDR(scb, scb->sg_list));
- hscb->SCSI_cmd_pointer =
- cpu_to_le32(SCB_DMA_ADDR(scb, scb->sense_cmd));
- hscb->data_count = scb->sg_list[0].length;
- hscb->data_pointer = scb->sg_list[0].address;
- hscb->SCSI_cmd_length = COMMAND_SIZE(scb->sense_cmd[0]);
- hscb->residual_SG_segment_count = 0;
- hscb->residual_data_count[0] = 0;
- hscb->residual_data_count[1] = 0;
- hscb->residual_data_count[2] = 0;
-
- scb->sg_count = hscb->SG_segment_count = 1;
- scb->sg_length = sizeof(cmd->sense_buffer);
- scb->tag_action = 0;
- scb->flags |= SCB_SENSE;
- /*
- * Ensure the target is busy since this will be an
- * an untagged request.
- */
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- if (scb->flags & SCB_MSGOUT_BITS)
- printk(INFO_LEAD "Requesting SENSE with %s\n", p->host_no,
- CTL_OF_SCB(scb), (scb->flags & SCB_MSGOUT_SDTR) ?
- "SDTR" : "WDTR");
- else
- printk(INFO_LEAD "Requesting SENSE, no MSG\n", p->host_no,
- CTL_OF_SCB(scb));
- }
-#endif
- aic7xxx_busy_target(p, scb);
- aic_outb(p, SEND_SENSE, RETURN_1);
- aic7xxx_error(cmd) = DID_OK;
- break;
- } /* first time sense, no errors */
- aic7xxx_error(cmd) = DID_ERROR;
- scb->flags &= ~SCB_SENSE;
- break;
-
- case QUEUE_FULL:
- queue_flag = TRUE; /* Mark that this is a QUEUE_FULL and */
- case BUSY: /* drop through to here */
- {
- struct aic7xxx_scb *next_scbp, *prev_scbp;
- unsigned char active_hscb, next_hscb, prev_hscb, scb_index;
- /*
- * We have to look three places for queued commands:
- * 1: QINFIFO
- * 2: p->waiting_scbs queue
- * 3: WAITING_SCBS list on card (for commands that are started
- * but haven't yet made it to the device)
- */
- aic7xxx_search_qinfifo(p, target, channel, lun,
- SCB_LIST_NULL, 0, TRUE,
- &p->delayed_scbs[tindex]);
- next_scbp = p->waiting_scbs.head;
- while ( next_scbp != NULL )
- {
- prev_scbp = next_scbp;
- next_scbp = next_scbp->q_next;
- if ( aic7xxx_match_scb(p, prev_scbp, target, channel, lun,
- SCB_LIST_NULL) )
- {
- scbq_remove(&p->waiting_scbs, prev_scbp);
- scbq_insert_tail(&p->delayed_scbs[tindex],
- prev_scbp);
- }
- }
- next_scbp = NULL;
- active_hscb = aic_inb(p, SCBPTR);
- prev_hscb = next_hscb = scb_index = SCB_LIST_NULL;
- next_hscb = aic_inb(p, WAITING_SCBH);
- while (next_hscb != SCB_LIST_NULL)
- {
- aic_outb(p, next_hscb, SCBPTR);
- scb_index = aic_inb(p, SCB_TAG);
- if (scb_index < p->scb_data->numscbs)
- {
- next_scbp = p->scb_data->scb_array[scb_index];
- if (aic7xxx_match_scb(p, next_scbp, target, channel, lun,
- SCB_LIST_NULL) )
- {
- if (next_scbp->flags & SCB_WAITINGQ)
- {
- p->dev_active_cmds[tindex]++;
- p->activescbs--;
- scbq_remove(&p->delayed_scbs[tindex], next_scbp);
- scbq_remove(&p->waiting_scbs, next_scbp);
- }
- scbq_insert_head(&p->delayed_scbs[tindex],
- next_scbp);
- next_scbp->flags |= SCB_WAITINGQ;
- p->dev_active_cmds[tindex]--;
- p->activescbs--;
- next_hscb = aic_inb(p, SCB_NEXT);
- aic_outb(p, 0, SCB_CONTROL);
- aic_outb(p, SCB_LIST_NULL, SCB_TAG);
- aic7xxx_add_curscb_to_free_list(p);
- if (prev_hscb == SCB_LIST_NULL)
- {
- /* We were first on the list,
- * so we kill the selection
- * hardware. Let the sequencer
- * re-init the hardware itself
- */
- aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
- aic_outb(p, CLRSELTIMEO, CLRSINT1);
- aic_outb(p, next_hscb, WAITING_SCBH);
- }
- else
- {
- aic_outb(p, prev_hscb, SCBPTR);
- aic_outb(p, next_hscb, SCB_NEXT);
- }
- }
- else
- {
- prev_hscb = next_hscb;
- next_hscb = aic_inb(p, SCB_NEXT);
- }
- } /* scb_index >= p->scb_data->numscbs */
- }
- aic_outb(p, active_hscb, SCBPTR);
- if (scb->flags & SCB_WAITINGQ)
- {
- scbq_remove(&p->delayed_scbs[tindex], scb);
- scbq_remove(&p->waiting_scbs, scb);
- p->dev_active_cmds[tindex]++;
- p->activescbs++;
- }
- scbq_insert_head(&p->delayed_scbs[tindex], scb);
- p->dev_active_cmds[tindex]--;
- p->activescbs--;
- scb->flags |= SCB_WAITINGQ | SCB_WAS_BUSY;
-
- if ( !(p->dev_timer_active & (0x01 << tindex)) )
- {
- p->dev_timer_active |= (0x01 << tindex);
- if ( p->dev_active_cmds[tindex] )
- {
- p->dev_expires[tindex] = jiffies + HZ;
- }
- else
- {
- p->dev_expires[tindex] = jiffies + (HZ / 10);
- }
- if ( !(p->dev_timer_active & (0x01 << MAX_TARGETS)) )
- {
- p->dev_timer.expires = p->dev_expires[tindex];
- p->dev_timer_active |= (0x01 << MAX_TARGETS);
- add_timer(&p->dev_timer);
- }
- else if ( time_after_eq(p->dev_timer.expires,
- p->dev_expires[tindex]) )
- mod_timer(&p->dev_timer, p->dev_expires[tindex]);
- }
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if( (aic7xxx_verbose & VERBOSE_MINOR_ERROR) ||
- (aic7xxx_verbose > 0xffff) )
- {
- if (queue_flag)
- printk(INFO_LEAD "Queue full received; queue depth %d, "
- "active %d\n", p->host_no, CTL_OF_SCB(scb),
- p->dev_max_queue_depth[tindex],
- p->dev_active_cmds[tindex]);
- else
- printk(INFO_LEAD "Target busy\n", p->host_no, CTL_OF_SCB(scb));
-
- }
-#endif
- if (queue_flag)
- {
- if ( p->dev_last_queue_full[tindex] !=
- p->dev_active_cmds[tindex] )
- {
- p->dev_last_queue_full[tindex] =
- p->dev_active_cmds[tindex];
- p->dev_last_queue_full_count[tindex] = 0;
- }
- else
- {
- p->dev_last_queue_full_count[tindex]++;
- }
- if ( (p->dev_last_queue_full_count[tindex] > 14) &&
- (p->dev_active_cmds[tindex] > 4) )
- {
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- printk(INFO_LEAD "Queue depth reduced to %d\n", p->host_no,
- CTL_OF_SCB(scb), p->dev_active_cmds[tindex]);
- p->dev_max_queue_depth[tindex] =
- p->dev_active_cmds[tindex];
- p->dev_last_queue_full[tindex] = 0;
- p->dev_last_queue_full_count[tindex] = 0;
- p->dev_temp_queue_depth[tindex] =
- p->dev_active_cmds[tindex];
- }
- else if (p->dev_active_cmds[tindex] == 0)
- {
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION)
- {
- printk(INFO_LEAD "QUEUE_FULL status received with 0 "
- "commands active.\n", p->host_no, CTL_OF_SCB(scb));
- printk(INFO_LEAD "Tagged Command Queueing disabled\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- p->dev_max_queue_depth[tindex] = 1;
- p->dev_temp_queue_depth[tindex] = 1;
- scb->tag_action = 0;
- scb->hscb->control &= ~(MSG_ORDERED_Q_TAG|MSG_SIMPLE_Q_TAG);
- }
- else
- {
- p->dev_flags[tindex] |= DEVICE_WAS_BUSY;
- p->dev_temp_queue_depth[tindex] =
- p->dev_active_cmds[tindex];
- }
- }
- break;
- }
-
- default:
- if (aic7xxx_verbose & VERBOSE_SEQINT)
- printk(INFO_LEAD "Unexpected target status 0x%x.\n", p->host_no,
- CTL_OF_SCB(scb), scb->hscb->target_status);
- if (!aic7xxx_error(cmd))
- {
- aic7xxx_error(cmd) = DID_RETRY_COMMAND;
- }
- break;
- } /* end switch */
- } /* end else of */
- }
- break;
-
- case AWAITING_MSG:
- {
- unsigned char scb_index, msg_out;
-
- scb_index = aic_inb(p, SCB_TAG);
- msg_out = aic_inb(p, MSG_OUT);
- scb = p->scb_data->scb_array[scb_index];
- p->msg_index = p->msg_len = 0;
- /*
- * This SCB had a MK_MESSAGE set in its control byte informing
- * the sequencer that we wanted to send a special message to
- * this target.
- */
-
- if ( !(scb->flags & SCB_DEVICE_RESET) &&
- (msg_out == MSG_IDENTIFYFLAG) &&
- (scb->hscb->control & TAG_ENB) )
- {
- p->msg_buf[p->msg_index++] = scb->tag_action;
- p->msg_buf[p->msg_index++] = scb->hscb->tag;
- p->msg_len += 2;
- }
-
- if (scb->flags & SCB_DEVICE_RESET)
- {
- p->msg_buf[p->msg_index++] = MSG_BUS_DEV_RESET;
- p->msg_len++;
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Bus device reset mailed.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- else if (scb->flags & SCB_ABORT)
- {
- if (scb->tag_action)
- {
- p->msg_buf[p->msg_index++] = MSG_ABORT_TAG;
- }
- else
- {
- p->msg_buf[p->msg_index++] = MSG_ABORT;
- }
- p->msg_len++;
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "Abort message mailed.\n", p->host_no,
- CTL_OF_SCB(scb));
- }
- else if (scb->flags & SCB_MSGOUT_PPR)
- {
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Sending PPR (%d/%d/%d/%d) message.\n",
- p->host_no, CTL_OF_SCB(scb),
- p->transinfo[tindex].goal_period,
- p->transinfo[tindex].goal_offset,
- p->transinfo[tindex].goal_width,
- p->transinfo[tindex].goal_options);
- }
- aic7xxx_construct_ppr(p, scb);
- }
- else if (scb->flags & SCB_MSGOUT_WDTR)
- {
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Sending WDTR message.\n", p->host_no,
- CTL_OF_SCB(scb));
- }
- aic7xxx_construct_wdtr(p, p->transinfo[tindex].goal_width);
- }
- else if (scb->flags & SCB_MSGOUT_SDTR)
- {
- unsigned int max_sync, period;
- unsigned char options = 0;
- /*
- * Now that the device is selected, use the bits in SBLKCTL and
- * SSTAT2 to determine the max sync rate for this device.
- */
- if (p->features & AHC_ULTRA2)
- {
- if ( (aic_inb(p, SBLKCTL) & ENAB40) &&
- !(aic_inb(p, SSTAT2) & EXP_ACTIVE) )
- {
- max_sync = AHC_SYNCRATE_ULTRA2;
- }
- else
- {
- max_sync = AHC_SYNCRATE_ULTRA;
- }
- }
- else if (p->features & AHC_ULTRA)
- {
- max_sync = AHC_SYNCRATE_ULTRA;
- }
- else
- {
- max_sync = AHC_SYNCRATE_FAST;
- }
- period = p->transinfo[tindex].goal_period;
- aic7xxx_find_syncrate(p, &period, max_sync, &options);
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Sending SDTR %d/%d message.\n", p->host_no,
- CTL_OF_SCB(scb), period,
- p->transinfo[tindex].goal_offset);
- }
- aic7xxx_construct_sdtr(p, period,
- p->transinfo[tindex].goal_offset);
- }
- else
- {
- sti();
- panic("aic7xxx: AWAITING_MSG for an SCB that does "
- "not have a waiting message.\n");
- }
- /*
- * We've set everything up to send our message, now to actually do
- * so we need to enable reqinit interrupts and let the interrupt
- * handler do the rest. We don't want to unpause the sequencer yet
- * though so we'll return early. We also have to make sure that
- * we clear the SEQINT *BEFORE* we set the REQINIT handler active
- * or else it's possible on VLB cards to loose the first REQINIT
- * interrupt. Edge triggered EISA cards could also loose this
- * interrupt, although PCI and level triggered cards should not
- * have this problem since they continually interrupt the kernel
- * until we take care of the situation.
- */
- scb->flags |= SCB_MSGOUT_SENT;
- p->msg_index = 0;
- p->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
- p->flags |= AHC_HANDLING_REQINITS;
- aic_outb(p, aic_inb(p, SIMODE1) | ENREQINIT, SIMODE1);
- return;
- }
- break;
-
- case DATA_OVERRUN:
- {
- unsigned char scb_index = aic_inb(p, SCB_TAG);
- unsigned char lastphase = aic_inb(p, LASTPHASE);
- unsigned int i;
-
- scb = (p->scb_data->scb_array[scb_index]);
- /*
- * XXX - What do we really want to do on an overrun? The
- * mid-level SCSI code should handle this, but for now,
- * we'll just indicate that the command should retried.
- * If we retrieved sense info on this target, then the
- * base SENSE info should have been saved prior to the
- * overrun error. In that case, we return DID_OK and let
- * the mid level code pick up on the sense info. Otherwise
- * we return DID_ERROR so the command will get retried.
- */
- if ( !(scb->flags & SCB_SENSE) )
- {
- printk(WARN_LEAD "Data overrun detected in %s phase, tag %d;\n",
- p->host_no, CTL_OF_SCB(scb),
- (lastphase == P_DATAIN) ? "Data-In" : "Data-Out", scb->hscb->tag);
- printk(KERN_WARNING " %s seen Data Phase. Length=%d, NumSGs=%d.\n",
- (aic_inb(p, SEQ_FLAGS) & DPHASE) ? "Have" : "Haven't",
- scb->sg_length, scb->sg_count);
- for (i = 0; i < scb->sg_count; i++)
- {
- printk(KERN_WARNING " sg[%d] - Addr 0x%x : Length %d\n",
- i,
- le32_to_cpu(scb->sg_list[i].address),
- le32_to_cpu(scb->sg_list[i].length) );
- }
- aic7xxx_error(scb->cmd) = DID_ERROR;
- }
- else
- printk(INFO_LEAD "Data Overrun during SEND_SENSE operation.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- break;
-
- case WIDE_RESIDUE:
- {
- unsigned char resid_sgcnt, index;
- unsigned char scb_index = aic_inb(p, SCB_TAG);
- unsigned int cur_addr, resid_dcnt;
- unsigned int native_addr, native_length;
- int i;
-
- if(scb_index > p->scb_data->numscbs)
- {
- printk(WARN_LEAD "invalid scb_index during WIDE_RESIDUE.\n",
- p->host_no, -1, -1, -1);
- /*
- * XXX: Add error handling here
- */
- break;
- }
- scb = p->scb_data->scb_array[scb_index];
- if(!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
- {
- printk(WARN_LEAD "invalid scb during WIDE_RESIDUE flags:0x%x "
- "scb->cmd:0x%lx\n", p->host_no, CTL_OF_SCB(scb),
- scb->flags, (unsigned long)scb->cmd);
- break;
- }
-
- /*
- * We have a valid scb to use on this WIDE_RESIDUE message, so
- * we need to walk the sg list looking for this particular sg
- * segment, then see if we happen to be at the very beginning of
- * the segment. If we are, then we have to back things up to
- * the previous segment. If not, then we simply need to remove
- * one byte from this segments address and add one to the byte
- * count.
- */
- cur_addr = aic_inb(p, SHADDR) | (aic_inb(p, SHADDR + 1) << 8) |
- (aic_inb(p, SHADDR + 2) << 16) | (aic_inb(p, SHADDR + 3) << 24);
- resid_sgcnt = aic_inb(p, SCB_RESID_SGCNT);
- resid_dcnt = aic_inb(p, SCB_RESID_DCNT) |
- (aic_inb(p, SCB_RESID_DCNT + 1) << 8) |
- (aic_inb(p, SCB_RESID_DCNT + 2) << 16);
- index = scb->sg_count - (resid_sgcnt + 1);
- native_addr = le32_to_cpu(scb->sg_list[index].address);
- native_length = le32_to_cpu(scb->sg_list[index].length);
- /*
- * Make sure this is a valid sg_seg for the given pointer
- */
- if(cur_addr < native_addr ||
- cur_addr > (native_addr + native_length + 1))
- {
- printk(WARN_LEAD "invalid cur_addr:0x%x during WIDE_RESIDUE\n",
- p->host_no, CTL_OF_SCB(scb), cur_addr);
- if(index > 0)
- printk(WARN_LEAD " sg_address[-1]:0x%x sg_length[-1]:%d\n",
- p->host_no, CTL_OF_SCB(scb),
- le32_to_cpu(scb->sg_list[index - 1].address),
- le32_to_cpu(scb->sg_list[index - 1].length));
- printk(WARN_LEAD " sg_address:0x%x sg_length:%d\n",
- p->host_no, CTL_OF_SCB(scb),
- native_addr, native_length);
- if(resid_sgcnt > 1)
- printk(WARN_LEAD " sg_address[1]:0x%x sg_length[1]:%d\n",
- p->host_no, CTL_OF_SCB(scb),
- le32_to_cpu(scb->sg_list[index + 1].address),
- le32_to_cpu(scb->sg_list[index + 1].length));
- printk(WARN_LEAD " cur_address:0x%x resid_dcnt:0x%06x\n",
- p->host_no, CTL_OF_SCB(scb),
- cur_addr, resid_dcnt);
- break;
- }
-
- if( (resid_sgcnt == 0) &&
- ((resid_dcnt == 0) || (resid_dcnt == 0xffffff)))
- {
- /*
- * We are at the end of the transfer and this is about a byte
- * we ignored already (because the sequencer knew this was
- * the last segment and set the adapter to ignore any wide
- * residue bytes that might come through, which is only done
- * on the last scatter gather segment of transfers).
- */
- break;
- }
- else if(cur_addr == native_addr)
- {
- /*
- * If our current address matches the sg_seg->address then we
- * have to back up the sg array to the previous segment and set
- * it up to have only one byte of transfer left to go.
- */
- if(index == 0)
- {
- printk(WARN_LEAD "bogus WIDE_RESIDUE message, no data has been "
- "transferred.\n", p->host_no, CTL_OF_SCB(scb));
- break;
- }
- resid_sgcnt++;
- index--;
- cur_addr = le32_to_cpu(scb->sg_list[index].address) +
- le32_to_cpu(scb->sg_list[index].length) - 1;
- native_addr = aic_inb(p, SG_NEXT) | (aic_inb(p, SG_NEXT + 1) << 8)
- | (aic_inb(p, SG_NEXT + 2) << 16) | (aic_inb(p, SG_NEXT + 3) << 24);
- native_addr -= SG_SIZEOF;
- aic_outb(p, resid_sgcnt, SG_COUNT);
- aic_outb(p, resid_sgcnt, SCB_RESID_SGCNT);
- aic_outb(p, native_addr & 0xff, SG_NEXT);
- aic_outb(p, (native_addr >> 8) & 0xff, SG_NEXT + 1);
- aic_outb(p, (native_addr >> 16) & 0xff, SG_NEXT + 2);
- aic_outb(p, (native_addr >> 24) & 0xff, SG_NEXT + 3);
- aic_outb(p, 1, SCB_RESID_DCNT);
- aic_outb(p, 0, SCB_RESID_DCNT + 1);
- aic_outb(p, 0, SCB_RESID_DCNT + 2);
- aic_outb(p, 1, HCNT);
- aic_outb(p, 0, HCNT + 1);
- aic_outb(p, 0, HCNT + 2);
- aic_outb(p, cur_addr & 0xff, HADDR);
- aic_outb(p, (cur_addr >> 8) & 0xff, HADDR + 1);
- aic_outb(p, (cur_addr >> 16) & 0xff, HADDR + 2);
- aic_outb(p, (cur_addr >> 24) & 0xff, HADDR + 3);
- }
- else
- {
- /*
- * Back the data pointer up by one and add one to the remaining
- * byte count. Then store that in the HCNT and HADDR registers.
- */
- cur_addr--;
- resid_dcnt++;
- aic_outb(p, resid_dcnt & 0xff, SCB_RESID_DCNT);
- aic_outb(p, (resid_dcnt >> 8) & 0xff, SCB_RESID_DCNT + 1);
- aic_outb(p, (resid_dcnt >> 16) & 0xff, SCB_RESID_DCNT + 2);
- aic_outb(p, resid_dcnt & 0xff, HCNT);
- aic_outb(p, (resid_dcnt >> 8) & 0xff, HCNT + 1);
- aic_outb(p, (resid_dcnt >> 16) & 0xff, HCNT + 2);
- aic_outb(p, cur_addr & 0xff, HADDR);
- aic_outb(p, (cur_addr >> 8) & 0xff, HADDR + 1);
- aic_outb(p, (cur_addr >> 16) & 0xff, HADDR + 2);
- aic_outb(p, (cur_addr >> 24) & 0xff, HADDR + 3);
- }
- /*
- * The sequencer actually wants to find the new address and byte
- * count in the SHCNT and SHADDR register sets. These registers
- * are a shadow of the regular HCNT and HADDR registers. On the
- * Ultra2 controllers, these registers are read only and the way
- * we have to set their values is to put the values we want into
- * the HCNT and HADDR registers and then output PRELOADEN into
- * the DFCNTRL register which causes the card to latch the current
- * values in the HADDR and HCNT registers and drop it through to
- * the shadow registers. On older cards we copy them directly
- * across by hand.
- */
- if(p->features & AHC_ULTRA2)
- {
- aic_outb(p, aic_inb(p, DMAPARAMS), DFCNTRL);
- i=0;
- udelay(1);
- while(((aic_inb(p, SSTAT0) & SDONE) != 0) && (i++ < 1000))
- {
- udelay(1);
- }
- aic_outb(p, aic_inb(p, DMAPARAMS) & ~(SCSIEN|HDMAEN), DFCNTRL);
- i=0;
- udelay(1);
- while(((aic_inb(p, DFCNTRL) & (SCSIEN|HDMAEN)) != 0) && (i++ < 1000))
- {
- udelay(1);
- }
- }
- else
- {
- aic_outb(p, resid_dcnt & 0xff, STCNT);
- aic_outb(p, (resid_dcnt >> 8) & 0xff, STCNT + 1);
- aic_outb(p, (resid_dcnt >> 16) & 0xff, STCNT + 2);
- aic_outb(p, cur_addr & 0xff, SHADDR);
- aic_outb(p, (cur_addr >> 8) & 0xff, SHADDR + 1);
- aic_outb(p, (cur_addr >> 16) & 0xff, SHADDR + 2);
- aic_outb(p, (cur_addr >> 24) & 0xff, SHADDR + 3);
- }
- }
- break;
-
-
-#if AIC7XXX_NOT_YET
- case TRACEPOINT:
- {
- printk(INFO_LEAD "Tracepoint #1 reached.\n", p->host_no,
- channel, target, lun);
- }
- break;
-
- case TRACEPOINT2:
- {
- printk(INFO_LEAD "Tracepoint #2 reached.\n", p->host_no,
- channel, target, lun);
- }
- break;
-
- /* XXX Fill these in later */
- case MSG_BUFFER_BUSY:
- printk("aic7xxx: Message buffer busy.\n");
- break;
- case MSGIN_PHASEMIS:
- printk("aic7xxx: Message-in phasemis.\n");
- break;
-#endif
-
- default: /* unknown */
- printk(WARN_LEAD "Unknown SEQINT, INTSTAT 0x%x, SCSISIGI 0x%x.\n",
- p->host_no, channel, target, lun, intstat,
- aic_inb(p, SCSISIGI));
- break;
- }
-
- /*
- * Clear the sequencer interrupt and unpause the sequencer.
- */
- unpause_sequencer(p, /* unpause always */ TRUE);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_parse_msg
- *
- * Description:
- * Parses incoming messages into actions on behalf of
- * aic7xxx_handle_reqinit
- *_F*************************************************************************/
-static int
-aic7xxx_parse_msg(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- int reject, reply, done;
- unsigned char target_scsirate, tindex;
- unsigned short target_mask;
- unsigned char target, channel, lun;
-
- target = scb->cmd->target;
- channel = scb->cmd->channel;
- lun = scb->cmd->lun;
- reply = reject = done = FALSE;
- tindex = TARGET_INDEX(scb->cmd);
- target_scsirate = aic_inb(p, TARG_SCSIRATE + tindex);
- target_mask = (0x01 << tindex);
-
- /*
- * Parse as much of the message as is availible,
- * rejecting it if we don't support it. When
- * the entire message is availible and has been
- * handled, return TRUE indicating that we have
- * parsed an entire message.
- */
-
- if (p->msg_buf[0] != MSG_EXTENDED)
- {
- reject = TRUE;
- }
-
- /*
- * Just accept the length byte outright and perform
- * more checking once we know the message type.
- */
-
- if ( !reject && (p->msg_len > 2) )
- {
- switch(p->msg_buf[2])
- {
- case MSG_EXT_SDTR:
- {
- unsigned int period, offset;
- unsigned char maxsync, saved_offset, options;
- struct aic7xxx_syncrate *syncrate;
-
- if (p->msg_buf[1] != MSG_EXT_SDTR_LEN)
- {
- reject = TRUE;
- break;
- }
-
- if (p->msg_len < (MSG_EXT_SDTR_LEN + 2))
- {
- break;
- }
-
- period = p->msg_buf[3];
- saved_offset = offset = p->msg_buf[4];
- options = 0;
-
- /*
- * Even if we are an Ultra3 card, don't allow Ultra3 sync rates when
- * using the SDTR messages. We need the PPR messages to enable the
- * higher speeds that include things like Dual Edge clocking.
- */
- if (p->features & AHC_ULTRA2)
- {
- if ( (aic_inb(p, SBLKCTL) & ENAB40) &&
- !(aic_inb(p, SSTAT2) & EXP_ACTIVE) )
- {
- maxsync = AHC_SYNCRATE_ULTRA2;
- }
- else
- {
- maxsync = AHC_SYNCRATE_ULTRA;
- }
- }
- else if (p->features & AHC_ULTRA)
- {
- maxsync = AHC_SYNCRATE_ULTRA;
- }
- else
- {
- maxsync = AHC_SYNCRATE_FAST;
- }
- /*
- * We might have a device that is starting negotiation with us
- * before we can start up negotiation with it....be prepared to
- * have a device ask for a higher speed then we want to give it
- * in that case
- */
- if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR)) !=
- (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR) )
- {
- if (!(p->dev_flags[tindex] & DEVICE_SCANNED) &&
- !(p->needsdtr_copy & target_mask) &&
- (p->transinfo[tindex].user_offset) )
- {
- /*
- * Not only is the device starting this up, but it also hasn't
- * been scanned yet, so this would likely be our TUR or our
- * INQUIRY command at scan time, so we need to use the
- * settings from the SEEPROM if they existed. Of course, even
- * if we didn't find a SEEPROM, we stuffed default values into
- * the user settings anyway, so use those in all cases.
- */
- p->transinfo[tindex].goal_period =
- p->transinfo[tindex].user_period;
- if(p->features & AHC_ULTRA2)
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_ULTRA2;
- }
- else if (p->transinfo[tindex].cur_width)
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_16BIT;
- }
- else
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_8BIT;
- }
- p->needsdtr_copy |= target_mask;
- }
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Received pre-emptive SDTR message from "
- "target.\n", p->host_no, CTL_OF_SCB(scb));
- }
- if ( !p->transinfo[tindex].goal_offset )
- period = 255;
- if ( p->transinfo[tindex].goal_period > period )
- period = p->transinfo[tindex].goal_period;
- }
-
- syncrate = aic7xxx_find_syncrate(p, &period, maxsync, &options);
- aic7xxx_validate_offset(p, syncrate, &offset,
- target_scsirate & WIDEXFER);
- aic7xxx_set_syncrate(p, syncrate, target, channel, period,
- offset, options, AHC_TRANS_ACTIVE|AHC_TRANS_CUR);
-
- /*
- * Did we drop to async? Or are we sending a reply? If we are,
- * then we have to make sure that the reply value reflects the proper
- * settings so we need to set the goal values according to what
- * we need to send.
- */
- if ( (offset != saved_offset) ||
- ((scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR)) !=
- (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR) ) )
- {
- aic7xxx_set_syncrate(p, syncrate, target, channel, period, offset,
- options, AHC_TRANS_GOAL|AHC_TRANS_QUITE);
- }
-
- /*
- * Did we start this, if not, or if we went to low and had to
- * go async, then send an SDTR back to the target
- */
- p->needsdtr &= ~target_mask;
- p->dtr_pending &= ~target_mask;
- if ( ((scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR)) !=
- (SCB_MSGOUT_SENT|SCB_MSGOUT_SDTR)) ||
- (offset != saved_offset) )
- {
- reply = TRUE;
- p->dtr_pending |= target_mask;
- scb->flags &= ~SCB_MSGOUT_BITS;
- scb->flags |= SCB_MSGOUT_SDTR;
- aic_outb(p, HOST_MSG, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
- }
- done = TRUE;
- break;
- }
- case MSG_EXT_WDTR:
- {
- unsigned char bus_width;
-
- if (p->msg_buf[1] != MSG_EXT_WDTR_LEN)
- {
- reject = TRUE;
- break;
- }
-
- if (p->msg_len < (MSG_EXT_WDTR_LEN + 2))
- {
- break;
- }
-
- bus_width = p->msg_buf[3];
- if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_WDTR)) ==
- (SCB_MSGOUT_SENT|SCB_MSGOUT_WDTR) )
- {
- switch(bus_width)
- {
- default:
- {
- reject = TRUE;
- if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- ((p->dev_flags[tindex] & DEVICE_PRINT_DTR) ||
- (aic7xxx_verbose > 0xffff)) )
- {
- printk(INFO_LEAD "Requesting %d bit transfers, rejecting.\n",
- p->host_no, CTL_OF_SCB(scb), 8 * (0x01 << bus_width));
- }
- } /* We fall through on purpose */
- case MSG_EXT_WDTR_BUS_8_BIT:
- {
- bus_width = MSG_EXT_WDTR_BUS_8_BIT;
- p->needwdtr_copy &= ~target_mask;
- break;
- }
- case MSG_EXT_WDTR_BUS_16_BIT:
- {
- break;
- }
- }
- p->dtr_pending &= ~target_mask;
- p->needwdtr &= ~target_mask;
- }
- else
- {
- if ( !(p->dev_flags[tindex] & DEVICE_SCANNED) )
- {
- /*
- * Well, we now know the WDTR and SYNC caps of this device since
- * it contacted us first, mark it as such and copy the user stuff
- * over to the goal stuff.
- */
- p->transinfo[tindex].goal_period =
- p->transinfo[tindex].user_period;
- if(p->transinfo[tindex].user_offset)
- {
- if(p->features & AHC_ULTRA2)
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_ULTRA2;
- }
- else if( p->transinfo[tindex].user_width &&
- (bus_width == MSG_EXT_WDTR_BUS_16_BIT) &&
- p->features & AHC_WIDE )
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_16BIT;
- }
- else
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_8BIT;
- }
- }
- p->transinfo[tindex].goal_width =
- p->transinfo[tindex].user_width;
- p->needwdtr_copy |= target_mask;
- p->needsdtr_copy |= target_mask;
- }
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Received pre-emptive WDTR message from "
- "target.\n", p->host_no, CTL_OF_SCB(scb));
- }
- switch(bus_width)
- {
- default:
- {
- if ( (p->features & AHC_WIDE) &&
- (p->transinfo[tindex].goal_width ==
- MSG_EXT_WDTR_BUS_16_BIT) )
- {
- bus_width = MSG_EXT_WDTR_BUS_16_BIT;
- break;
- }
- } /* Fall through if we aren't a wide card */
- case MSG_EXT_WDTR_BUS_8_BIT:
- {
- p->needwdtr_copy &= ~target_mask;
- bus_width = MSG_EXT_WDTR_BUS_8_BIT;
- aic7xxx_set_width(p, target, channel, lun, bus_width,
- AHC_TRANS_GOAL|AHC_TRANS_QUITE);
- break;
- }
- }
- reply = TRUE;
- scb->flags &= ~SCB_MSGOUT_BITS;
- scb->flags |= SCB_MSGOUT_WDTR;
- p->needwdtr &= ~target_mask;
- p->dtr_pending |= target_mask;
- aic_outb(p, HOST_MSG, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
- }
- aic7xxx_set_width(p, target, channel, lun, bus_width,
- AHC_TRANS_ACTIVE|AHC_TRANS_CUR);
-
- /*
- * By virtue of the SCSI spec, a WDTR message negates any existing
- * SDTR negotiations. So, even if needsdtr isn't marked for this
- * device, we still have to do a new SDTR message if the device
- * supports SDTR at all. Therefore, we check needsdtr_copy instead
- * of needstr.
- */
- aic7xxx_set_syncrate(p, NULL, target, channel, 0, 0, 0,
- AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE);
- p->needsdtr |= (p->needsdtr_copy & target_mask);
- done = TRUE;
- break;
- }
- case MSG_EXT_PPR:
- {
- unsigned char bus_width, trans_options, new_trans_options;
- unsigned int period, offset;
- unsigned char maxsync, saved_offset;
- struct aic7xxx_syncrate *syncrate;
-
- if (p->msg_buf[1] != MSG_EXT_PPR_LEN)
- {
- reject = TRUE;
- break;
- }
-
- if (p->msg_len < (MSG_EXT_PPR_LEN + 2))
- {
- break;
- }
-
- period = p->msg_buf[3];
- offset = saved_offset = p->msg_buf[5];
- bus_width = p->msg_buf[6];
- trans_options = new_trans_options = p->msg_buf[7] & 0xf;
-
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Parsing PPR message (%d/%d/%d/%d)\n",
- p->host_no, CTL_OF_SCB(scb), period, offset, bus_width,
- trans_options);
- }
-
- if ( (aic_inb(p, SBLKCTL) & ENAB40) &&
- !(aic_inb(p, SSTAT2) & EXP_ACTIVE) )
- {
- if(p->features & AHC_ULTRA3)
- {
- maxsync = AHC_SYNCRATE_ULTRA3;
- }
- else
- {
- maxsync = AHC_SYNCRATE_ULTRA2;
- }
- }
- else
- {
- maxsync = AHC_SYNCRATE_ULTRA;
- }
- /*
- * We might have a device that is starting negotiation with us
- * before we can start up negotiation with it....be prepared to
- * have a device ask for a higher speed then we want to give it
- * in that case
- */
- if ( (scb->flags & (SCB_MSGOUT_SENT|SCB_MSGOUT_PPR)) !=
- (SCB_MSGOUT_SENT|SCB_MSGOUT_PPR) )
- {
- reply = TRUE;
- scb->flags &= ~SCB_MSGOUT_BITS;
- scb->flags |= SCB_MSGOUT_PPR;
- p->dev_flags[tindex] |= DEVICE_SCSI_3;
- if (!(p->dev_flags[tindex] & DEVICE_SCANNED))
- {
- /*
- * Not only is the device starting this up, but it also hasn't
- * been scanned yet, so this would likely be our TUR or our
- * INQUIRY command at scan time, so we need to use the
- * settings from the SEEPROM if they existed. Of course, even
- * if we didn't find a SEEPROM, we stuffed default values into
- * the user settings anyway, so use those in all cases.
- */
- p->transinfo[tindex].goal_period =
- p->transinfo[tindex].user_period;
- if(p->transinfo[tindex].user_offset)
- {
- if(p->features & AHC_ULTRA2)
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_ULTRA2;
- }
- else if( p->transinfo[tindex].user_width &&
- (bus_width == MSG_EXT_WDTR_BUS_16_BIT) &&
- p->features & AHC_WIDE )
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_16BIT;
- }
- else
- {
- p->transinfo[tindex].goal_offset = MAX_OFFSET_8BIT;
- }
- }
- p->transinfo[tindex].goal_width =
- p->transinfo[tindex].user_width;
- p->transinfo[tindex].goal_options =
- p->transinfo[tindex].user_options;
- }
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Received pre-emptive PPR message from "
- "target.\n", p->host_no, CTL_OF_SCB(scb));
- }
- if ( !p->transinfo[tindex].goal_offset )
- period = 255;
- if ( p->transinfo[tindex].goal_period > period )
- period = p->transinfo[tindex].goal_period;
- if ( p->transinfo[tindex].goal_options == 0 )
- new_trans_options = 0;
- switch(bus_width)
- {
- default:
- {
- if ( (p->features & AHC_WIDE) &&
- (p->transinfo[tindex].goal_width ==
- MSG_EXT_WDTR_BUS_16_BIT) )
- {
- bus_width = MSG_EXT_WDTR_BUS_16_BIT;
- break;
- }
- } /* Fall through if we aren't a wide card */
- case MSG_EXT_WDTR_BUS_8_BIT:
- {
- p->needwdtr_copy &= ~target_mask;
- bus_width = MSG_EXT_WDTR_BUS_8_BIT;
- aic7xxx_set_width(p, target, channel, lun, bus_width,
- AHC_TRANS_GOAL|AHC_TRANS_QUITE);
- break;
- }
- }
- if ( (p->transinfo[tindex].goal_period > 9) ||
- (p->transinfo[tindex].goal_options == 0) )
- {
- scb->flags &= ~SCB_MSGOUT_BITS;
- reject = TRUE;
- reply = FALSE;
- p->needppr &= ~(1 << tindex);
- p->needppr_copy &= ~(1 << tindex);
- if ( p->transinfo[tindex].goal_offset )
- {
- p->needsdtr |= (1 << tindex);
- p->needsdtr_copy |= (1 << tindex);
- }
- if ( p->transinfo[tindex].goal_width )
- {
- p->needwdtr |= (1 << tindex);
- p->needwdtr_copy |= (1 << tindex);
- }
- }
- }
- else
- {
- switch(bus_width)
- {
- default:
- {
- reject = TRUE;
- if ( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- ((p->dev_flags[tindex] & DEVICE_PRINT_DTR) ||
- (aic7xxx_verbose > 0xffff)) )
- {
- printk(INFO_LEAD "Requesting %d bit transfers, rejecting.\n",
- p->host_no, CTL_OF_SCB(scb), 8 * (0x01 << bus_width));
- }
- } /* We fall through on purpose */
- case MSG_EXT_WDTR_BUS_8_BIT:
- {
- /*
- * According to the spec, if we aren't wide, we also can't be
- * Dual Edge so clear the options byte
- */
- new_trans_options = 0;
- bus_width = MSG_EXT_WDTR_BUS_8_BIT;
- break;
- }
- case MSG_EXT_WDTR_BUS_16_BIT:
- {
- break;
- }
- }
- }
-
- if ( !reject )
- {
- aic7xxx_set_width(p, target, channel, lun, bus_width,
- AHC_TRANS_ACTIVE|AHC_TRANS_CUR);
- syncrate = aic7xxx_find_syncrate(p, &period, maxsync,
- &new_trans_options);
- aic7xxx_validate_offset(p, syncrate, &offset, bus_width);
- aic7xxx_set_syncrate(p, syncrate, target, channel, period,
- offset, new_trans_options,
- AHC_TRANS_ACTIVE|AHC_TRANS_CUR);
- }
-
- p->dtr_pending &= ~target_mask;
- p->needppr &= ~target_mask;
- if(reply)
- {
- p->dtr_pending |= target_mask;
- scb->flags &= ~SCB_MSGOUT_BITS;
- scb->flags |= SCB_MSGOUT_PPR;
- aic_outb(p, HOST_MSG, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
- }
- done = TRUE;
- break;
- }
- default:
- {
- reject = TRUE;
- break;
- }
- } /* end of switch(p->msg_type) */
- } /* end of if (!reject && (p->msg_len > 2)) */
-
- if (!reply && reject)
- {
- aic_outb(p, MSG_MESSAGE_REJECT, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGO) | ATNO, SCSISIGO);
- done = TRUE;
- }
- return(done);
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_handle_reqinit
- *
- * Description:
- * Interrupt handler for REQINIT interrupts (used to transfer messages to
- * and from devices).
- *_F*************************************************************************/
-static void
-aic7xxx_handle_reqinit(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- unsigned char lastbyte;
- unsigned char phasemis;
- int done = FALSE;
-
- switch(p->msg_type)
- {
- case MSG_TYPE_INITIATOR_MSGOUT:
- {
- if (p->msg_len == 0)
- panic("aic7xxx: REQINIT with no active message!\n");
-
- lastbyte = (p->msg_index == (p->msg_len - 1));
- phasemis = ( aic_inb(p, SCSISIGI) & PHASE_MASK) != P_MESGOUT;
-
- if (lastbyte || phasemis)
- {
- /* Time to end the message */
- p->msg_len = 0;
- p->msg_type = MSG_TYPE_NONE;
- /*
- * NOTE-TO-MYSELF: If you clear the REQINIT after you
- * disable REQINITs, then cases of REJECT_MSG stop working
- * and hang the bus
- */
- aic_outb(p, aic_inb(p, SIMODE1) & ~ENREQINIT, SIMODE1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- p->flags &= ~AHC_HANDLING_REQINITS;
-
- if (phasemis == 0)
- {
- aic_outb(p, p->msg_buf[p->msg_index], SINDEX);
- aic_outb(p, 0, RETURN_1);
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- printk(INFO_LEAD "Completed sending of REQINIT message.\n",
- p->host_no, CTL_OF_SCB(scb));
-#endif
- }
- else
- {
- aic_outb(p, MSGOUT_PHASEMIS, RETURN_1);
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- printk(INFO_LEAD "PHASEMIS while sending REQINIT message.\n",
- p->host_no, CTL_OF_SCB(scb));
-#endif
- }
- unpause_sequencer(p, TRUE);
- }
- else
- {
- /*
- * Present the byte on the bus (clearing REQINIT) but don't
- * unpause the sequencer.
- */
- aic_outb(p, CLRREQINIT, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- aic_outb(p, p->msg_buf[p->msg_index++], SCSIDATL);
- }
- break;
- }
- case MSG_TYPE_INITIATOR_MSGIN:
- {
- phasemis = ( aic_inb(p, SCSISIGI) & PHASE_MASK ) != P_MESGIN;
-
- if (phasemis == 0)
- {
- p->msg_len++;
- /* Pull the byte in without acking it */
- p->msg_buf[p->msg_index] = aic_inb(p, SCSIBUSL);
- done = aic7xxx_parse_msg(p, scb);
- /* Ack the byte */
- aic_outb(p, CLRREQINIT, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- aic_inb(p, SCSIDATL);
- p->msg_index++;
- }
- if (phasemis || done)
- {
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- {
- if (phasemis)
- printk(INFO_LEAD "PHASEMIS while receiving REQINIT message.\n",
- p->host_no, CTL_OF_SCB(scb));
- else
- printk(INFO_LEAD "Completed receipt of REQINIT message.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
-#endif
- /* Time to end our message session */
- p->msg_len = 0;
- p->msg_type = MSG_TYPE_NONE;
- aic_outb(p, aic_inb(p, SIMODE1) & ~ENREQINIT, SIMODE1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- p->flags &= ~AHC_HANDLING_REQINITS;
- unpause_sequencer(p, TRUE);
- }
- break;
- }
- default:
- {
- panic("aic7xxx: Unknown REQINIT message type.\n");
- break;
- }
- } /* End of switch(p->msg_type) */
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_handle_scsiint
- *
- * Description:
- * Interrupt handler for SCSI interrupts (SCSIINT).
- *-F*************************************************************************/
-static void
-aic7xxx_handle_scsiint(struct aic7xxx_host *p, unsigned char intstat)
-{
- unsigned char scb_index;
- unsigned char status;
- struct aic7xxx_scb *scb;
-
- scb_index = aic_inb(p, SCB_TAG);
- status = aic_inb(p, SSTAT1);
-
- if (scb_index < p->scb_data->numscbs)
- {
- scb = p->scb_data->scb_array[scb_index];
- if ((scb->flags & SCB_ACTIVE) == 0)
- {
- scb = NULL;
- }
- }
- else
- {
- scb = NULL;
- }
-
-
- if ((status & SCSIRSTI) != 0)
- {
- int channel;
-
- if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
- channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3;
- else
- channel = 0;
-
- if (aic7xxx_verbose & VERBOSE_RESET)
- printk(WARN_LEAD "Someone else reset the channel!!\n",
- p->host_no, channel, -1, -1);
- if (aic7xxx_panic_on_abort)
- aic7xxx_panic_abort(p, NULL);
- /*
- * Go through and abort all commands for the channel, but do not
- * reset the channel again.
- */
- aic7xxx_reset_channel(p, channel, /* Initiate Reset */ FALSE);
- aic7xxx_run_done_queue(p, TRUE);
- scb = NULL;
- }
- else if ( ((status & BUSFREE) != 0) && ((status & SELTO) == 0) )
- {
- /*
- * First look at what phase we were last in. If it's message-out,
- * chances are pretty good that the bus free was in response to
- * one of our abort requests.
- */
- unsigned char lastphase = aic_inb(p, LASTPHASE);
- unsigned char saved_tcl = aic_inb(p, SAVED_TCL);
- unsigned char target = (saved_tcl >> 4) & 0x0F;
- int channel;
- int printerror = TRUE;
-
- if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
- channel = (aic_inb(p, SBLKCTL) & SELBUSB) >> 3;
- else
- channel = 0;
-
- aic_outb(p, aic_inb(p, SCSISEQ) & (ENSELI|ENRSELI|ENAUTOATNP),
- SCSISEQ);
- if (lastphase == P_MESGOUT)
- {
- unsigned char message;
-
- message = aic_inb(p, SINDEX);
-
- if ((message == MSG_ABORT) || (message == MSG_ABORT_TAG))
- {
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "SCB %d abort delivered.\n", p->host_no,
- CTL_OF_SCB(scb), scb->hscb->tag);
- aic7xxx_reset_device(p, target, channel, ALL_LUNS,
- (message == MSG_ABORT) ? SCB_LIST_NULL : scb->hscb->tag );
- aic7xxx_run_done_queue(p, TRUE);
- scb = NULL;
- printerror = 0;
- }
- else if (message == MSG_BUS_DEV_RESET)
- {
- aic7xxx_handle_device_reset(p, target, channel);
- scb = NULL;
- printerror = 0;
- }
- }
- if ( (scb != NULL) &&
- (scb->cmd == p->dev_dtr_cmnd[TARGET_INDEX(scb->cmd)]) )
- {
- /*
- * This might be a SCSI-3 device that is dropping the bus due to
- * errors and signalling that we should reduce the transfer speed.
- * All we have to do is complete this command (since it's a negotiation
- * command already) and the checksum routine should flag an error and
- * reduce the speed setting and renegotiate. We call the reset routing
- * just to clean out the hardware from this scb.
- */
- printerror = 0;
- aic7xxx_reset_device(p, target, channel, ALL_LUNS, scb->hscb->tag);
- aic7xxx_run_done_queue(p, TRUE);
- scb = NULL;
- }
- if (printerror != 0)
- {
- if (scb != NULL)
- {
- unsigned char tag;
-
- if ((scb->hscb->control & TAG_ENB) != 0)
- {
- tag = scb->hscb->tag;
- }
- else
- {
- tag = SCB_LIST_NULL;
- }
- aic7xxx_reset_device(p, target, channel, ALL_LUNS, tag);
- aic7xxx_run_done_queue(p, TRUE);
- }
- else
- {
- aic7xxx_reset_device(p, target, channel, ALL_LUNS, SCB_LIST_NULL);
- aic7xxx_run_done_queue(p, TRUE);
- }
- printk(INFO_LEAD "Unexpected busfree, LASTPHASE = 0x%x, "
- "SEQADDR = 0x%x\n", p->host_no, channel, target, -1, lastphase,
- (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0));
- scb = NULL;
- }
- aic_outb(p, MSG_NOOP, MSG_OUT);
- aic_outb(p, aic_inb(p, SIMODE1) & ~(ENBUSFREE|ENREQINIT),
- SIMODE1);
- p->flags &= ~AHC_HANDLING_REQINITS;
- aic_outb(p, CLRBUSFREE, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- restart_sequencer(p);
- unpause_sequencer(p, TRUE);
- }
- else if ((status & SELTO) != 0)
- {
- unsigned char scbptr;
- unsigned char nextscb;
- Scsi_Cmnd *cmd;
-
- scbptr = aic_inb(p, WAITING_SCBH);
- if (scbptr > p->scb_data->maxhscbs)
- {
- /*
- * I'm still trying to track down exactly how this happens, but until
- * I find it, this code will make sure we aren't passing bogus values
- * into the SCBPTR register, even if that register will just wrap
- * things around, we still don't like having out of range variables.
- *
- * NOTE: Don't check the aic7xxx_verbose variable, I want this message
- * to always be displayed.
- */
- printk(INFO_LEAD "Invalid WAITING_SCBH value %d, improvising.\n",
- p->host_no, -1, -1, -1, scbptr);
- if (p->scb_data->maxhscbs > 4)
- scbptr &= (p->scb_data->maxhscbs - 1);
- else
- scbptr &= 0x03;
- }
- aic_outb(p, scbptr, SCBPTR);
- scb_index = aic_inb(p, SCB_TAG);
-
- scb = NULL;
- if (scb_index < p->scb_data->numscbs)
- {
- scb = p->scb_data->scb_array[scb_index];
- if ((scb->flags & SCB_ACTIVE) == 0)
- {
- scb = NULL;
- }
- }
- if (scb == NULL)
- {
- printk(WARN_LEAD "Referenced SCB %d not valid during SELTO.\n",
- p->host_no, -1, -1, -1, scb_index);
- printk(KERN_WARNING " SCSISEQ = 0x%x SEQADDR = 0x%x SSTAT0 = 0x%x "
- "SSTAT1 = 0x%x\n", aic_inb(p, SCSISEQ),
- aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
- aic_inb(p, SSTAT0), aic_inb(p, SSTAT1));
- if (aic7xxx_panic_on_abort)
- aic7xxx_panic_abort(p, NULL);
- }
- else
- {
- cmd = scb->cmd;
- cmd->result = (DID_TIME_OUT << 16);
-
- /*
- * Clear out this hardware SCB
- */
- aic_outb(p, 0, SCB_CONTROL);
-
- /*
- * Clear out a few values in the card that are in an undetermined
- * state.
- */
- aic_outb(p, MSG_NOOP, MSG_OUT);
-
- /*
- * Shift the waiting for selection queue forward
- */
- nextscb = aic_inb(p, SCB_NEXT);
- aic_outb(p, nextscb, WAITING_SCBH);
-
- /*
- * Put this SCB back on the free list.
- */
- aic7xxx_add_curscb_to_free_list(p);
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- printk(INFO_LEAD "Selection Timeout.\n", p->host_no, CTL_OF_SCB(scb));
-#endif
- if (scb->flags & SCB_QUEUED_ABORT)
- {
- /*
- * We know that this particular SCB had to be the queued abort since
- * the disconnected SCB would have gotten a reconnect instead.
- * What we need to do then is to let the command timeout again so
- * we get a reset since this abort just failed.
- */
- cmd->result = 0;
- scb = NULL;
- }
- else if (scb->cmd == p->dev_dtr_cmnd[TARGET_INDEX(scb->cmd)])
- {
- /*
- * Turn off the needsdtr, needwdtr, and needppr bits since this device
- * doesn't seem to exist.
- */
- p->needppr &= ~(0x01 << TARGET_INDEX(scb->cmd));
- p->needppr_copy &= ~(0x01 << TARGET_INDEX(scb->cmd));
- p->needsdtr &= ~(0x01 << TARGET_INDEX(scb->cmd));
- p->needsdtr_copy &= ~(0x01 << TARGET_INDEX(scb->cmd));
- p->needwdtr &= ~(0x01 << TARGET_INDEX(scb->cmd));
- p->needwdtr_copy &= ~(0x01 << TARGET_INDEX(scb->cmd));
- }
- }
- /*
- * Keep the sequencer from trying to restart any selections
- */
- aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
- /*
- * Make sure the data bits on the bus are released
- * Don't do this on 7770 chipsets, it makes them give us
- * a BRKADDRINT and kills the card.
- */
- if( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI )
- aic_outb(p, 0, SCSIBUSL);
-
- /*
- * Delay for the selection timeout delay period then stop the selection
- */
- udelay(301);
- aic_outb(p, CLRSELINGO, CLRSINT0);
- /*
- * Clear out all the interrupt status bits
- */
- aic_outb(p, aic_inb(p, SIMODE1) & ~(ENREQINIT|ENBUSFREE), SIMODE1);
- p->flags &= ~AHC_HANDLING_REQINITS;
- aic_outb(p, CLRSELTIMEO | CLRBUSFREE, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- /*
- * Restarting the sequencer will stop the selection and make sure devices
- * are allowed to reselect in.
- */
- restart_sequencer(p);
- unpause_sequencer(p, TRUE);
- }
- else if (scb == NULL)
- {
- printk(WARN_LEAD "aic7xxx_isr - referenced scb not valid "
- "during scsiint 0x%x scb(%d)\n"
- " SIMODE0 0x%x, SIMODE1 0x%x, SSTAT0 0x%x, SEQADDR 0x%x\n",
- p->host_no, -1, -1, -1, status, scb_index, aic_inb(p, SIMODE0),
- aic_inb(p, SIMODE1), aic_inb(p, SSTAT0),
- (aic_inb(p, SEQADDR1) << 8) | aic_inb(p, SEQADDR0));
- /*
- * Turn off the interrupt and set status to zero, so that it
- * falls through the rest of the SCSIINT code.
- */
- aic_outb(p, status, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- unpause_sequencer(p, /* unpause always */ TRUE);
- scb = NULL;
- }
- else if (status & SCSIPERR)
- {
- /*
- * Determine the bus phase and queue an appropriate message.
- */
- char *phase;
- Scsi_Cmnd *cmd;
- unsigned char mesg_out = MSG_NOOP;
- unsigned char lastphase = aic_inb(p, LASTPHASE);
- unsigned char sstat2 = aic_inb(p, SSTAT2);
- unsigned char tindex = TARGET_INDEX(scb->cmd);
-
- cmd = scb->cmd;
- switch (lastphase)
- {
- case P_DATAOUT:
- phase = "Data-Out";
- break;
- case P_DATAIN:
- phase = "Data-In";
- mesg_out = MSG_INITIATOR_DET_ERR;
- break;
- case P_COMMAND:
- phase = "Command";
- break;
- case P_MESGOUT:
- phase = "Message-Out";
- break;
- case P_STATUS:
- phase = "Status";
- mesg_out = MSG_INITIATOR_DET_ERR;
- break;
- case P_MESGIN:
- phase = "Message-In";
- mesg_out = MSG_PARITY_ERROR;
- break;
- default:
- phase = "unknown";
- break;
- }
-
- /*
- * A parity error has occurred during a data
- * transfer phase. Flag it and continue.
- */
- if( (p->features & AHC_ULTRA3) &&
- (aic_inb(p, SCSIRATE) & AHC_SYNCRATE_CRC) &&
- (lastphase == P_DATAIN) )
- {
- printk(WARN_LEAD "CRC error during %s phase.\n",
- p->host_no, CTL_OF_SCB(scb), phase);
- if(sstat2 & CRCVALERR)
- {
- printk(WARN_LEAD " CRC error in intermediate CRC packet.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- if(sstat2 & CRCENDERR)
- {
- printk(WARN_LEAD " CRC error in ending CRC packet.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- if(sstat2 & CRCREQERR)
- {
- printk(WARN_LEAD " Target incorrectly requested a CRC packet.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- if(sstat2 & DUAL_EDGE_ERROR)
- {
- printk(WARN_LEAD " Dual Edge transmission error.\n",
- p->host_no, CTL_OF_SCB(scb));
- }
- }
- else if( (lastphase == P_MESGOUT) &&
- (cmd == p->dev_dtr_cmnd[tindex]) &&
- (scb->flags & SCB_MSGOUT_PPR) )
- {
- /*
- * As per the draft specs, any device capable of supporting any of
- * the option values other than 0 are not allowed to reject the
- * PPR message. Instead, they must negotiate out what they do
- * support instead of rejecting our offering or else they cause
- * a parity error during msg_out phase to signal that they don't
- * like our settings.
- */
- p->needppr &= ~(1 << tindex);
- p->needppr_copy &= ~(1 << tindex);
- aic7xxx_set_width(p, scb->cmd->target, scb->cmd->channel, scb->cmd->lun,
- MSG_EXT_WDTR_BUS_8_BIT,
- (AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE));
- aic7xxx_set_syncrate(p, NULL, scb->cmd->target, scb->cmd->channel, 0, 0,
- 0, AHC_TRANS_ACTIVE|AHC_TRANS_CUR|AHC_TRANS_QUITE);
- p->transinfo[tindex].goal_options = 0;
- p->dtr_pending &= ~(1 << tindex);
- scb->flags &= ~SCB_MSGOUT_BITS;
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "parity error during PPR message, reverting "
- "to WDTR/SDTR\n", p->host_no, CTL_OF_SCB(scb));
- }
- if ( p->transinfo[tindex].goal_width )
- {
- p->needwdtr |= (1 << tindex);
- p->needwdtr_copy |= (1 << tindex);
- }
- if ( p->transinfo[tindex].goal_offset )
- {
- if( p->transinfo[tindex].goal_period <= 9 )
- {
- p->transinfo[tindex].goal_period = 10;
- }
- p->needsdtr |= (1 << tindex);
- p->needsdtr_copy |= (1 << tindex);
- }
- scb = NULL;
- }
- else if(p->dev_flags[tindex] & DEVICE_PARITY_ERROR)
- {
- struct aic7xxx_syncrate *syncrate;
- unsigned int period = p->transinfo[tindex].cur_period;
- unsigned char options = p->transinfo[tindex].cur_options;
- /*
- * oops, we had a failure, lower the transfer rate and try again. It's
- * worth noting here that it might be wise to also check for typical
- * wide setting on narrow cable type problems and try disabling wide
- * instead of slowing down if those exist. That's hard to do with simple
- * checksums though.
- */
- printk(WARN_LEAD "Parity error during %s phase.\n",
- p->host_no, CTL_OF_SCB(scb), phase);
- if((syncrate = aic7xxx_find_syncrate(p, &period, 0, &options)) != NULL)
- {
- syncrate++;
- if( (syncrate->rate[0] != NULL) &&
- (!(p->features & AHC_ULTRA2) || (syncrate->sxfr_ultra2 == 0)) )
- {
- p->transinfo[tindex].goal_period = syncrate->period;
- if( p->transinfo[tindex].goal_period > 9 )
- {
- p->transinfo[tindex].goal_options = 0;
- p->needppr &= ~(1<<tindex);
- p->needsdtr |= (1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr_copy |= (1<<tindex);
- if (p->transinfo[tindex].goal_width)
- {
- p->needwdtr |= (1<<tindex);
- p->needwdtr_copy |= (1<<tindex);
- }
- }
- }
- else if (p->transinfo[tindex].goal_width)
- {
- p->transinfo[tindex].goal_width = 0;
- p->needwdtr &= ~(1<<tindex);
- p->needwdtr_copy &= ~(1<<tindex);
- p->transinfo[tindex].goal_offset =
- p->transinfo[tindex].user_offset;
- p->transinfo[tindex].goal_period =
- p->transinfo[tindex].user_period;
- p->transinfo[tindex].goal_options =
- p->transinfo[tindex].user_options;
- if( p->transinfo[tindex].goal_period <= 9 )
- {
- p->needppr |= (1<<tindex);
- p->needsdtr &= ~(1<<tindex);
- p->needppr_copy |= (1<<tindex);
- p->needsdtr_copy &= ~(1<<tindex);
- }
- else
- {
- p->needppr &= ~(1<<tindex);
- p->needsdtr |= (1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr_copy |= (1<<tindex);
- }
- }
- else
- {
- p->transinfo[tindex].goal_offset = 0;
- p->transinfo[tindex].goal_period = 255;
- p->transinfo[tindex].goal_options = 0;
- p->transinfo[tindex].goal_width = 0;
- p->needppr &= ~(1<<tindex);
- p->needsdtr &= ~(1<<tindex);
- p->needwdtr &= ~(1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr_copy &= ~(1<<tindex);
- p->needwdtr_copy &= ~(1<<tindex);
- }
- }
- p->dev_flags[tindex] &= ~DEVICE_PARITY_ERROR;
- }
- else
- {
- p->dev_flags[tindex] |= DEVICE_PARITY_ERROR;
- }
-
- /*
- * We've set the hardware to assert ATN if we get a parity
- * error on "in" phases, so all we need to do is stuff the
- * message buffer with the appropriate message. "In" phases
- * have set mesg_out to something other than MSG_NOP.
- */
- if (mesg_out != MSG_NOOP)
- {
- aic_outb(p, mesg_out, MSG_OUT);
- aic_outb(p, aic_inb(p, SCSISIGI) | ATNO, SCSISIGO);
- scb = NULL;
- }
- aic_outb(p, CLRSCSIPERR, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- unpause_sequencer(p, /* unpause_always */ TRUE);
- }
- else if ( (status & REQINIT) &&
- (p->flags & AHC_HANDLING_REQINITS) )
- {
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (aic7xxx_verbose > 0xffff)
- printk(INFO_LEAD "Handling REQINIT, SSTAT1=0x%x.\n", p->host_no,
- CTL_OF_SCB(scb), aic_inb(p, SSTAT1));
-#endif
- aic7xxx_handle_reqinit(p, scb);
- return;
- }
- else
- {
- /*
- * We don't know what's going on. Turn off the
- * interrupt source and try to continue.
- */
- if (aic7xxx_verbose & VERBOSE_SCSIINT)
- printk(INFO_LEAD "Unknown SCSIINT status, SSTAT1(0x%x).\n",
- p->host_no, -1, -1, -1, status);
- aic_outb(p, status, CLRSINT1);
- aic_outb(p, CLRSCSIINT, CLRINT);
- unpause_sequencer(p, /* unpause always */ TRUE);
- scb = NULL;
- }
- if (scb != NULL)
- {
- aic7xxx_done(p, scb);
- }
-}
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
-static void
-aic7xxx_check_scbs(struct aic7xxx_host *p, char *buffer)
-{
- unsigned char saved_scbptr, free_scbh, dis_scbh, wait_scbh, temp;
- int i, bogus, lost;
- static unsigned char scb_status[AIC7XXX_MAXSCB];
-
-#define SCB_NO_LIST 0
-#define SCB_FREE_LIST 1
-#define SCB_WAITING_LIST 2
-#define SCB_DISCONNECTED_LIST 4
-#define SCB_CURRENTLY_ACTIVE 8
-
- /*
- * Note, these checks will fail on a regular basis once the machine moves
- * beyond the bus scan phase. The problem is race conditions concerning
- * the scbs and where they are linked in. When you have 30 or so commands
- * outstanding on the bus, and run this twice with every interrupt, the
- * chances get pretty good that you'll catch the sequencer with an SCB
- * only partially linked in. Therefore, once we pass the scan phase
- * of the bus, we really should disable this function.
- */
- bogus = FALSE;
- memset(&scb_status[0], 0, sizeof(scb_status));
- pause_sequencer(p);
- saved_scbptr = aic_inb(p, SCBPTR);
- if (saved_scbptr >= p->scb_data->maxhscbs)
- {
- printk("Bogus SCBPTR %d\n", saved_scbptr);
- bogus = TRUE;
- }
- scb_status[saved_scbptr] = SCB_CURRENTLY_ACTIVE;
- free_scbh = aic_inb(p, FREE_SCBH);
- if ( (free_scbh != SCB_LIST_NULL) &&
- (free_scbh >= p->scb_data->maxhscbs) )
- {
- printk("Bogus FREE_SCBH %d\n", free_scbh);
- bogus = TRUE;
- }
- else
- {
- temp = free_scbh;
- while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) )
- {
- if(scb_status[temp] & 0x07)
- {
- printk("HSCB %d on multiple lists, status 0x%02x", temp,
- scb_status[temp] | SCB_FREE_LIST);
- bogus = TRUE;
- }
- scb_status[temp] |= SCB_FREE_LIST;
- aic_outb(p, temp, SCBPTR);
- temp = aic_inb(p, SCB_NEXT);
- }
- }
-
- dis_scbh = aic_inb(p, DISCONNECTED_SCBH);
- if ( (dis_scbh != SCB_LIST_NULL) &&
- (dis_scbh >= p->scb_data->maxhscbs) )
- {
- printk("Bogus DISCONNECTED_SCBH %d\n", dis_scbh);
- bogus = TRUE;
- }
- else
- {
- temp = dis_scbh;
- while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) )
- {
- if(scb_status[temp] & 0x07)
- {
- printk("HSCB %d on multiple lists, status 0x%02x", temp,
- scb_status[temp] | SCB_DISCONNECTED_LIST);
- bogus = TRUE;
- }
- scb_status[temp] |= SCB_DISCONNECTED_LIST;
- aic_outb(p, temp, SCBPTR);
- temp = aic_inb(p, SCB_NEXT);
- }
- }
-
- wait_scbh = aic_inb(p, WAITING_SCBH);
- if ( (wait_scbh != SCB_LIST_NULL) &&
- (wait_scbh >= p->scb_data->maxhscbs) )
- {
- printk("Bogus WAITING_SCBH %d\n", wait_scbh);
- bogus = TRUE;
- }
- else
- {
- temp = wait_scbh;
- while( (temp != SCB_LIST_NULL) && (temp < p->scb_data->maxhscbs) )
- {
- if(scb_status[temp] & 0x07)
- {
- printk("HSCB %d on multiple lists, status 0x%02x", temp,
- scb_status[temp] | SCB_WAITING_LIST);
- bogus = TRUE;
- }
- scb_status[temp] |= SCB_WAITING_LIST;
- aic_outb(p, temp, SCBPTR);
- temp = aic_inb(p, SCB_NEXT);
- }
- }
-
- lost=0;
- for(i=0; i < p->scb_data->maxhscbs; i++)
- {
- aic_outb(p, i, SCBPTR);
- temp = aic_inb(p, SCB_NEXT);
- if ( ((temp != SCB_LIST_NULL) &&
- (temp >= p->scb_data->maxhscbs)) )
- {
- printk("HSCB %d bad, SCB_NEXT invalid(%d).\n", i, temp);
- bogus = TRUE;
- }
- if ( temp == i )
- {
- printk("HSCB %d bad, SCB_NEXT points to self.\n", i);
- bogus = TRUE;
- }
- if (scb_status[i] == 0)
- lost++;
- if (lost > 1)
- {
- printk("Too many lost scbs.\n");
- bogus=TRUE;
- }
- }
- aic_outb(p, saved_scbptr, SCBPTR);
- unpause_sequencer(p, FALSE);
- if (bogus)
- {
- printk("Bogus parameters found in card SCB array structures.\n");
- printk("%s\n", buffer);
- aic7xxx_panic_abort(p, NULL);
- }
- return;
-}
-#endif
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_handle_command_completion_intr
- *
- * Description:
- * SCSI command completion interrupt handler.
- *-F*************************************************************************/
-static void
-aic7xxx_handle_command_completion_intr(struct aic7xxx_host *p)
-{
- struct aic7xxx_scb *scb = NULL;
- Scsi_Cmnd *cmd;
- unsigned char scb_index, tindex;
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) )
- printk(INFO_LEAD "Command Complete Int.\n", p->host_no, -1, -1, -1);
-#endif
-
- /*
- * Read the INTSTAT location after clearing the CMDINT bit. This forces
- * any posted PCI writes to flush to memory. Gerard Roudier suggested
- * this fix to the possible race of clearing the CMDINT bit but not
- * having all command bytes flushed onto the qoutfifo.
- */
- aic_outb(p, CLRCMDINT, CLRINT);
- aic_inb(p, INTSTAT);
- /*
- * The sequencer will continue running when it
- * issues this interrupt. There may be >1 commands
- * finished, so loop until we've processed them all.
- */
-
- while (p->qoutfifo[p->qoutfifonext] != SCB_LIST_NULL)
- {
- scb_index = p->qoutfifo[p->qoutfifonext];
- p->qoutfifo[p->qoutfifonext++] = SCB_LIST_NULL;
- if ( scb_index >= p->scb_data->numscbs )
- {
- printk(WARN_LEAD "CMDCMPLT with invalid SCB index %d\n", p->host_no,
- -1, -1, -1, scb_index);
- continue;
- }
- scb = p->scb_data->scb_array[scb_index];
- if (!(scb->flags & SCB_ACTIVE) || (scb->cmd == NULL))
- {
- printk(WARN_LEAD "CMDCMPLT without command for SCB %d, SCB flags "
- "0x%x, cmd 0x%lx\n", p->host_no, -1, -1, -1, scb_index, scb->flags,
- (unsigned long) scb->cmd);
- continue;
- }
- tindex = TARGET_INDEX(scb->cmd);
- if (scb->flags & SCB_QUEUED_ABORT)
- {
- pause_sequencer(p);
- if ( ((aic_inb(p, LASTPHASE) & PHASE_MASK) != P_BUSFREE) &&
- (aic_inb(p, SCB_TAG) == scb->hscb->tag) )
- {
- unpause_sequencer(p, FALSE);
- continue;
- }
- aic7xxx_reset_device(p, scb->cmd->target, scb->cmd->channel,
- scb->cmd->lun, scb->hscb->tag);
- scb->flags &= ~(SCB_QUEUED_FOR_DONE | SCB_RESET | SCB_ABORT |
- SCB_QUEUED_ABORT);
- unpause_sequencer(p, FALSE);
- }
- else if (scb->flags & SCB_ABORT)
- {
- /*
- * We started to abort this, but it completed on us, let it
- * through as successful
- */
- scb->flags &= ~(SCB_ABORT|SCB_RESET);
- }
- else if (scb->flags & SCB_SENSE)
- {
- char *buffer = &scb->cmd->sense_buffer[0];
- if (scb->cmd == p->dev_dtr_cmnd[tindex])
- {
- struct aic7xxx_scb *old_scb;
- /*
- * We have valid sense data, send it back immediately.
- */
- old_scb = p->scb_data->scb_array[scb->cmd->next->tag];
- *old_scb->cmd->sense_buffer = *scb->cmd->sense_buffer;
- old_scb->hscb->target_status = scb->hscb->target_status;
- old_scb->cmd->result = scb->hscb->target_status;
- old_scb->cmd->result |= (DID_ERROR << 16);
- aic7xxx_status(old_scb->cmd) = scb->hscb->target_status;
- scbq_remove(&p->waiting_scbs, old_scb);
- scbq_remove(&p->delayed_scbs[tindex], old_scb);
- scb->cmd->next = NULL;
- aic7xxx_done(p, scb);
- aic7xxx_done(p, old_scb);
- continue;
- }
- else if (buffer[12] == 0x47 || buffer[12] == 0x54)
- {
- /*
- * SCSI errors, run domain validation and re-run negotiation
- */
- p->needdv |= (1<<tindex);
- /*
- * Signal that we need to re-negotiate things, this also gets us our
- * INQUIRY command to re-checksum off of.
- */
- p->needppr |= (p->needppr_copy & (1<<tindex));
- p->needsdtr |= (p->needsdtr_copy & (1<<tindex));
- p->needwdtr |= (p->needwdtr_copy & (1<<tindex));
- }
- }
- switch (status_byte(scb->hscb->target_status))
- {
- case QUEUE_FULL:
- case BUSY:
- scb->hscb->target_status = 0;
- scb->cmd->result = 0;
- aic7xxx_error(scb->cmd) = DID_OK;
- break;
- default:
- cmd = scb->cmd;
- if (scb->hscb->residual_SG_segment_count != 0)
- {
- aic7xxx_calculate_residual(p, scb);
- }
- cmd->result |= (aic7xxx_error(cmd) << 16);
- aic7xxx_done(p, scb);
- break;
- }
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_isr
- *
- * Description:
- * SCSI controller interrupt handler.
- *-F*************************************************************************/
-static void
-aic7xxx_isr(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct aic7xxx_host *p;
- unsigned char intstat;
-
- p = (struct aic7xxx_host *)dev_id;
-
- /*
- * Just a few sanity checks. Make sure that we have an int pending.
- * Also, if PCI, then we are going to check for a PCI bus error status
- * should we get too many spurious interrupts.
- */
- if (!((intstat = aic_inb(p, INTSTAT)) & INT_PEND))
- {
-#ifdef CONFIG_PCI
- if ( (p->chip & AHC_PCI) && (p->spurious_int > 500) &&
- !(p->flags & AHC_HANDLING_REQINITS) )
- {
- if ( aic_inb(p, ERROR) & PCIERRSTAT )
- {
- aic7xxx_pci_intr(p);
- }
- p->spurious_int = 0;
- }
- else if ( !(p->flags & AHC_HANDLING_REQINITS) )
- {
- p->spurious_int++;
- }
-#endif
- return;
- }
-
- p->spurious_int = 0;
-
- /*
- * Keep track of interrupts for /proc/scsi
- */
- p->isr_count++;
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if ( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) &&
- (aic7xxx_panic_on_abort) && (p->flags & AHC_PAGESCBS) )
- aic7xxx_check_scbs(p, "Bogus settings at start of interrupt.");
-#endif
-
- /*
- * Handle all the interrupt sources - especially for SCSI
- * interrupts, we won't get a second chance at them.
- */
- if (intstat & CMDCMPLT)
- {
- aic7xxx_handle_command_completion_intr(p);
- }
-
- if (intstat & BRKADRINT)
- {
- int i;
- unsigned char errno = aic_inb(p, ERROR);
-
- printk(KERN_ERR "(scsi%d) BRKADRINT error(0x%x):\n", p->host_no, errno);
- for (i = 0; i < NUMBER(hard_error); i++)
- {
- if (errno & hard_error[i].errno)
- {
- printk(KERN_ERR " %s\n", hard_error[i].errmesg);
- }
- }
- printk(KERN_ERR "(scsi%d) SEQADDR=0x%x\n", p->host_no,
- (((aic_inb(p, SEQADDR1) << 8) & 0x100) | aic_inb(p, SEQADDR0)));
- if (aic7xxx_panic_on_abort)
- aic7xxx_panic_abort(p, NULL);
-#ifdef CONFIG_PCI
- if (errno & PCIERRSTAT)
- aic7xxx_pci_intr(p);
-#endif
- if (errno & (SQPARERR | ILLOPCODE | ILLSADDR))
- {
- sti();
- panic("aic7xxx: unrecoverable BRKADRINT.\n");
- }
- if (errno & ILLHADDR)
- {
- printk(KERN_ERR "(scsi%d) BUG! Driver accessed chip without first "
- "pausing controller!\n", p->host_no);
- }
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (errno & DPARERR)
- {
- if (aic_inb(p, DMAPARAMS) & DIRECTION)
- printk("(scsi%d) while DMAing SCB from host to card.\n", p->host_no);
- else
- printk("(scsi%d) while DMAing SCB from card to host.\n", p->host_no);
- }
-#endif
- aic_outb(p, CLRPARERR | CLRBRKADRINT, CLRINT);
- unpause_sequencer(p, FALSE);
- }
-
- if (intstat & SEQINT)
- {
- /*
- * Read the CCSCBCTL register to work around a bug in the Ultra2 cards
- */
- if(p->features & AHC_ULTRA2)
- {
- aic_inb(p, CCSCBCTL);
- }
- aic7xxx_handle_seqint(p, intstat);
- }
-
- if (intstat & SCSIINT)
- {
- aic7xxx_handle_scsiint(p, intstat);
- }
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if ( (p->isr_count < 16) && (aic7xxx_verbose > 0xffff) &&
- (aic7xxx_panic_on_abort) && (p->flags & AHC_PAGESCBS) )
- aic7xxx_check_scbs(p, "Bogus settings at end of interrupt.");
-#endif
-
-}
-
-/*+F*************************************************************************
- * Function:
- * do_aic7xxx_isr
- *
- * Description:
- * This is a gross hack to solve a problem in linux kernels 2.1.85 and
- * above. Please, children, do not try this at home, and if you ever see
- * anything like it, please inform the Gross Hack Police immediately
- *-F*************************************************************************/
-static void
-do_aic7xxx_isr(int irq, void *dev_id, struct pt_regs *regs)
-{
- unsigned long cpu_flags;
- struct aic7xxx_host *p;
-
- p = (struct aic7xxx_host *)dev_id;
- if(!p)
- return;
- spin_lock_irqsave(&io_request_lock, cpu_flags);
- if(test_and_set_bit(AHC_IN_ISR_BIT, (void *)&p->flags))
- {
- spin_unlock_irqrestore(&io_request_lock, cpu_flags);
- return;
- }
- do
- {
- aic7xxx_isr(irq, dev_id, regs);
- } while ( (aic_inb(p, INTSTAT) & INT_PEND) );
- aic7xxx_done_cmds_complete(p);
- aic7xxx_run_waiting_queues(p);
- clear_bit(AHC_IN_ISR_BIT, (void *)&p->flags);
- spin_unlock_irqrestore(&io_request_lock, cpu_flags);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_device_queue_depth
- *
- * Description:
- * Determines the queue depth for a given device. There are two ways
- * a queue depth can be obtained for a tagged queueing device. One
- * way is the default queue depth which is determined by whether
- * AIC7XXX_CMDS_PER_DEVICE is defined. If it is defined, then it is used
- * as the default queue depth. Otherwise, we use either 4 or 8 as the
- * default queue depth (dependent on the number of hardware SCBs).
- * The other way we determine queue depth is through the use of the
- * aic7xxx_tag_info array which is enabled by defining
- * AIC7XXX_TAGGED_QUEUEING_BY_DEVICE. This array can be initialized
- * with queue depths for individual devices. It also allows tagged
- * queueing to be [en|dis]abled for a specific adapter.
- *-F*************************************************************************/
-static int
-aic7xxx_device_queue_depth(struct aic7xxx_host *p, Scsi_Device *device)
-{
- int default_depth = 3;
- unsigned char tindex;
- unsigned short target_mask;
-
- tindex = device->id | (device->channel << 3);
- target_mask = (1 << tindex);
-
- if (p->dev_max_queue_depth[tindex] > 1)
- {
- /*
- * We've already scanned this device, leave it alone
- */
- return(p->dev_max_queue_depth[tindex]);
- }
-
- device->queue_depth = default_depth;
- p->dev_temp_queue_depth[tindex] = 1;
- p->dev_max_queue_depth[tindex] = 1;
- p->tagenable &= ~target_mask;
-
- if (device->tagged_supported)
- {
- int tag_enabled = TRUE;
-
- default_depth = AIC7XXX_CMDS_PER_DEVICE;
-
- if (!(p->discenable & target_mask))
- {
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- printk(INFO_LEAD "Disconnection disabled, unable to "
- "enable tagged queueing.\n",
- p->host_no, device->channel, device->id, device->lun);
- }
- else
- {
- if (p->instance >= NUMBER(aic7xxx_tag_info))
- {
- static int print_warning = TRUE;
- if(print_warning)
- {
- printk(KERN_INFO "aic7xxx: WARNING, insufficient tag_info instances for"
- " installed controllers.\n");
- printk(KERN_INFO "aic7xxx: Please update the aic7xxx_tag_info array in"
- " the aic7xxx.c source file.\n");
- print_warning = FALSE;
- }
- device->queue_depth = default_depth;
- }
- else
- {
-
- if (aic7xxx_tag_info[p->instance].tag_commands[tindex] == 255)
- {
- tag_enabled = FALSE;
- device->queue_depth = 3; /* Tagged queueing is disabled. */
- }
- else if (aic7xxx_tag_info[p->instance].tag_commands[tindex] == 0)
- {
- device->queue_depth = default_depth;
- }
- else
- {
- device->queue_depth =
- aic7xxx_tag_info[p->instance].tag_commands[tindex];
- }
- }
- if ((device->tagged_queue == 0) && tag_enabled)
- {
- if (aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Enabled tagged queuing, queue depth %d.\n",
- p->host_no, device->channel, device->id,
- device->lun, device->queue_depth);
- }
- p->dev_max_queue_depth[tindex] = device->queue_depth;
- p->dev_temp_queue_depth[tindex] = device->queue_depth;
- p->tagenable |= target_mask;
- p->orderedtag |= target_mask;
- device->tagged_queue = 1;
- device->current_tag = SCB_LIST_NULL;
- }
- }
- }
- return(p->dev_max_queue_depth[tindex]);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_select_queue_depth
- *
- * Description:
- * Sets the queue depth for each SCSI device hanging off the input
- * host adapter. We use a queue depth of 2 for devices that do not
- * support tagged queueing. If AIC7XXX_CMDS_PER_LUN is defined, we
- * use that for tagged queueing devices; otherwise we use our own
- * algorithm for determining the queue depth based on the maximum
- * SCBs for the controller.
- *-F*************************************************************************/
-static void
-aic7xxx_select_queue_depth(struct Scsi_Host *host,
- Scsi_Device *scsi_devs)
-{
- Scsi_Device *device;
- struct aic7xxx_host *p = (struct aic7xxx_host *) host->hostdata;
- int scbnum;
-
- scbnum = 0;
- for (device = scsi_devs; device != NULL; device = device->next)
- {
- if (device->host == host)
- {
- scbnum += aic7xxx_device_queue_depth(p, device);
- }
- }
- while (scbnum > p->scb_data->numscbs)
- {
- /*
- * Pre-allocate the needed SCBs to get around the possibility of having
- * to allocate some when memory is more or less exhausted and we need
- * the SCB in order to perform a swap operation (possible deadlock)
- */
- if ( aic7xxx_allocate_scb(p) == 0 )
- return;
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_probe
- *
- * Description:
- * Probing for EISA boards: it looks like the first two bytes
- * are a manufacturer code - three characters, five bits each:
- *
- * BYTE 0 BYTE 1 BYTE 2 BYTE 3
- * ?1111122 22233333 PPPPPPPP RRRRRRRR
- *
- * The characters are baselined off ASCII '@', so add that value
- * to each to get the real ASCII code for it. The next two bytes
- * appear to be a product and revision number, probably vendor-
- * specific. This is what is being searched for at each port,
- * and what should probably correspond to the ID= field in the
- * ECU's .cfg file for the card - if your card is not detected,
- * make sure your signature is listed in the array.
- *
- * The fourth byte's lowest bit seems to be an enabled/disabled
- * flag (rest of the bits are reserved?).
- *
- * NOTE: This function is only needed on Intel and Alpha platforms,
- * the other platforms we support don't have EISA/VLB busses. So,
- * we #ifdef this entire function to avoid compiler warnings about
- * an unused function.
- *-F*************************************************************************/
-#if defined(__i386__) || defined(__alpha__)
-static int
-aic7xxx_probe(int slot, int base, ahc_flag_type *flags)
-{
- int i;
- unsigned char buf[4];
-
- static struct {
- int n;
- unsigned char signature[sizeof(buf)];
- ahc_chip type;
- int bios_disabled;
- } AIC7xxx[] = {
- { 4, { 0x04, 0x90, 0x77, 0x70 },
- AHC_AIC7770|AHC_EISA, FALSE }, /* mb 7770 */
- { 4, { 0x04, 0x90, 0x77, 0x71 },
- AHC_AIC7770|AHC_EISA, FALSE }, /* host adapter 274x */
- { 4, { 0x04, 0x90, 0x77, 0x56 },
- AHC_AIC7770|AHC_VL, FALSE }, /* 284x BIOS enabled */
- { 4, { 0x04, 0x90, 0x77, 0x57 },
- AHC_AIC7770|AHC_VL, TRUE } /* 284x BIOS disabled */
- };
-
- /*
- * The VL-bus cards need to be primed by
- * writing before a signature check.
- */
- for (i = 0; i < sizeof(buf); i++)
- {
- outb(0x80 + i, base);
- buf[i] = inb(base + i);
- }
-
- for (i = 0; i < NUMBER(AIC7xxx); i++)
- {
- /*
- * Signature match on enabled card?
- */
- if (!memcmp(buf, AIC7xxx[i].signature, AIC7xxx[i].n))
- {
- if (inb(base + 4) & 1)
- {
- if (AIC7xxx[i].bios_disabled)
- {
- *flags |= AHC_USEDEFAULTS;
- }
- else
- {
- *flags |= AHC_BIOS_ENABLED;
- }
- return (i);
- }
-
- printk("aic7xxx: <Adaptec 7770 SCSI Host Adapter> "
- "disabled at slot %d, ignored.\n", slot);
- }
- }
-
- return (-1);
-}
-#endif /* (__i386__) || (__alpha__) */
-
-
-/*+F*************************************************************************
- * Function:
- * read_2840_seeprom
- *
- * Description:
- * Reads the 2840 serial EEPROM and returns 1 if successful and 0 if
- * not successful.
- *
- * See read_seeprom (for the 2940) for the instruction set of the 93C46
- * chip.
- *
- * The 2840 interface to the 93C46 serial EEPROM is through the
- * STATUS_2840 and SEECTL_2840 registers. The CS_2840, CK_2840, and
- * DO_2840 bits of the SEECTL_2840 register are connected to the chip
- * select, clock, and data out lines respectively of the serial EEPROM.
- * The DI_2840 bit of the STATUS_2840 is connected to the data in line
- * of the serial EEPROM. The EEPROM_TF bit of STATUS_2840 register is
- * useful in that it gives us an 800 nsec timer. After a read from the
- * SEECTL_2840 register the timing flag is cleared and goes high 800 nsec
- * later.
- *-F*************************************************************************/
-static int
-read_284x_seeprom(struct aic7xxx_host *p, struct seeprom_config *sc)
-{
- int i = 0, k = 0;
- unsigned char temp;
- unsigned short checksum = 0;
- unsigned short *seeprom = (unsigned short *) sc;
- struct seeprom_cmd {
- unsigned char len;
- unsigned char bits[3];
- };
- struct seeprom_cmd seeprom_read = {3, {1, 1, 0}};
-
-#define CLOCK_PULSE(p) \
- while ((aic_inb(p, STATUS_2840) & EEPROM_TF) == 0) \
- { \
- ; /* Do nothing */ \
- } \
- (void) aic_inb(p, SEECTL_2840);
-
- /*
- * Read the first 32 registers of the seeprom. For the 2840,
- * the 93C46 SEEPROM is a 1024-bit device with 64 16-bit registers
- * but only the first 32 are used by Adaptec BIOS. The loop
- * will range from 0 to 31.
- */
- for (k = 0; k < (sizeof(*sc) / 2); k++)
- {
- /*
- * Send chip select for one clock cycle.
- */
- aic_outb(p, CK_2840 | CS_2840, SEECTL_2840);
- CLOCK_PULSE(p);
-
- /*
- * Now we're ready to send the read command followed by the
- * address of the 16-bit register we want to read.
- */
- for (i = 0; i < seeprom_read.len; i++)
- {
- temp = CS_2840 | seeprom_read.bits[i];
- aic_outb(p, temp, SEECTL_2840);
- CLOCK_PULSE(p);
- temp = temp ^ CK_2840;
- aic_outb(p, temp, SEECTL_2840);
- CLOCK_PULSE(p);
- }
- /*
- * Send the 6 bit address (MSB first, LSB last).
- */
- for (i = 5; i >= 0; i--)
- {
- temp = k;
- temp = (temp >> i) & 1; /* Mask out all but lower bit. */
- temp = CS_2840 | temp;
- aic_outb(p, temp, SEECTL_2840);
- CLOCK_PULSE(p);
- temp = temp ^ CK_2840;
- aic_outb(p, temp, SEECTL_2840);
- CLOCK_PULSE(p);
- }
-
- /*
- * Now read the 16 bit register. An initial 0 precedes the
- * register contents which begins with bit 15 (MSB) and ends
- * with bit 0 (LSB). The initial 0 will be shifted off the
- * top of our word as we let the loop run from 0 to 16.
- */
- for (i = 0; i <= 16; i++)
- {
- temp = CS_2840;
- aic_outb(p, temp, SEECTL_2840);
- CLOCK_PULSE(p);
- temp = temp ^ CK_2840;
- seeprom[k] = (seeprom[k] << 1) | (aic_inb(p, STATUS_2840) & DI_2840);
- aic_outb(p, temp, SEECTL_2840);
- CLOCK_PULSE(p);
- }
- /*
- * The serial EEPROM has a checksum in the last word. Keep a
- * running checksum for all words read except for the last
- * word. We'll verify the checksum after all words have been
- * read.
- */
- if (k < (sizeof(*sc) / 2) - 1)
- {
- checksum = checksum + seeprom[k];
- }
-
- /*
- * Reset the chip select for the next command cycle.
- */
- aic_outb(p, 0, SEECTL_2840);
- CLOCK_PULSE(p);
- aic_outb(p, CK_2840, SEECTL_2840);
- CLOCK_PULSE(p);
- aic_outb(p, 0, SEECTL_2840);
- CLOCK_PULSE(p);
- }
-
-#if 0
- printk("Computed checksum 0x%x, checksum read 0x%x\n", checksum, sc->checksum);
- printk("Serial EEPROM:");
- for (k = 0; k < (sizeof(*sc) / 2); k++)
- {
- if (((k % 8) == 0) && (k != 0))
- {
- printk("\n ");
- }
- printk(" 0x%x", seeprom[k]);
- }
- printk("\n");
-#endif
-
- if (checksum != sc->checksum)
- {
- printk("aic7xxx: SEEPROM checksum error, ignoring SEEPROM settings.\n");
- return (0);
- }
-
- return (1);
-#undef CLOCK_PULSE
-}
-
-#define CLOCK_PULSE(p) \
- do { \
- int limit = 0; \
- do { \
- mb(); \
- pause_sequencer(p); /* This is just to generate some PCI */ \
- /* traffic so the PCI read is flushed */ \
- /* it shouldn't be needed, but some */ \
- /* chipsets do indeed appear to need */ \
- /* something to force PCI reads to get */ \
- /* flushed */ \
- udelay(1); /* Do nothing */ \
- } while (((aic_inb(p, SEECTL) & SEERDY) == 0) && (++limit < 1000)); \
- } while(0)
-
-/*+F*************************************************************************
- * Function:
- * acquire_seeprom
- *
- * Description:
- * Acquires access to the memory port on PCI controllers.
- *-F*************************************************************************/
-static int
-acquire_seeprom(struct aic7xxx_host *p)
-{
-
- /*
- * Request access of the memory port. When access is
- * granted, SEERDY will go high. We use a 1 second
- * timeout which should be near 1 second more than
- * is needed. Reason: after the 7870 chip reset, there
- * should be no contention.
- */
- aic_outb(p, SEEMS, SEECTL);
- CLOCK_PULSE(p);
- if ((aic_inb(p, SEECTL) & SEERDY) == 0)
- {
- aic_outb(p, 0, SEECTL);
- return (0);
- }
- return (1);
-}
-
-/*+F*************************************************************************
- * Function:
- * release_seeprom
- *
- * Description:
- * Releases access to the memory port on PCI controllers.
- *-F*************************************************************************/
-static void
-release_seeprom(struct aic7xxx_host *p)
-{
- /*
- * Make sure the SEEPROM is ready before we release it.
- */
- CLOCK_PULSE(p);
- aic_outb(p, 0, SEECTL);
-}
-
-/*+F*************************************************************************
- * Function:
- * read_seeprom
- *
- * Description:
- * Reads the serial EEPROM and returns 1 if successful and 0 if
- * not successful.
- *
- * The instruction set of the 93C46/56/66 chips is as follows:
- *
- * Start OP
- * Function Bit Code Address Data Description
- * -------------------------------------------------------------------
- * READ 1 10 A5 - A0 Reads data stored in memory,
- * starting at specified address
- * EWEN 1 00 11XXXX Write enable must precede
- * all programming modes
- * ERASE 1 11 A5 - A0 Erase register A5A4A3A2A1A0
- * WRITE 1 01 A5 - A0 D15 - D0 Writes register
- * ERAL 1 00 10XXXX Erase all registers
- * WRAL 1 00 01XXXX D15 - D0 Writes to all registers
- * EWDS 1 00 00XXXX Disables all programming
- * instructions
- * *Note: A value of X for address is a don't care condition.
- * *Note: The 93C56 and 93C66 have 8 address bits.
- *
- *
- * The 93C46 has a four wire interface: clock, chip select, data in, and
- * data out. In order to perform one of the above functions, you need
- * to enable the chip select for a clock period (typically a minimum of
- * 1 usec, with the clock high and low a minimum of 750 and 250 nsec
- * respectively. While the chip select remains high, you can clock in
- * the instructions (above) starting with the start bit, followed by the
- * OP code, Address, and Data (if needed). For the READ instruction, the
- * requested 16-bit register contents is read from the data out line but
- * is preceded by an initial zero (leading 0, followed by 16-bits, MSB
- * first). The clock cycling from low to high initiates the next data
- * bit to be sent from the chip.
- *
- * The 78xx interface to the 93C46 serial EEPROM is through the SEECTL
- * register. After successful arbitration for the memory port, the
- * SEECS bit of the SEECTL register is connected to the chip select.
- * The SEECK, SEEDO, and SEEDI are connected to the clock, data out,
- * and data in lines respectively. The SEERDY bit of SEECTL is useful
- * in that it gives us an 800 nsec timer. After a write to the SEECTL
- * register, the SEERDY goes high 800 nsec later. The one exception
- * to this is when we first request access to the memory port. The
- * SEERDY goes high to signify that access has been granted and, for
- * this case, has no implied timing.
- *-F*************************************************************************/
-static int
-read_seeprom(struct aic7xxx_host *p, int offset,
- unsigned short *scarray, unsigned int len, seeprom_chip_type chip)
-{
- int i = 0, k;
- unsigned char temp;
- unsigned short checksum = 0;
- struct seeprom_cmd {
- unsigned char len;
- unsigned char bits[3];
- };
- struct seeprom_cmd seeprom_read = {3, {1, 1, 0}};
-
- /*
- * Request access of the memory port.
- */
- if (acquire_seeprom(p) == 0)
- {
- return (0);
- }
-
- /*
- * Read 'len' registers of the seeprom. For the 7870, the 93C46
- * SEEPROM is a 1024-bit device with 64 16-bit registers but only
- * the first 32 are used by Adaptec BIOS. Some adapters use the
- * 93C56 SEEPROM which is a 2048-bit device. The loop will range
- * from 0 to 'len' - 1.
- */
- for (k = 0; k < len; k++)
- {
- /*
- * Send chip select for one clock cycle.
- */
- aic_outb(p, SEEMS | SEECK | SEECS, SEECTL);
- CLOCK_PULSE(p);
-
- /*
- * Now we're ready to send the read command followed by the
- * address of the 16-bit register we want to read.
- */
- for (i = 0; i < seeprom_read.len; i++)
- {
- temp = SEEMS | SEECS | (seeprom_read.bits[i] << 1);
- aic_outb(p, temp, SEECTL);
- CLOCK_PULSE(p);
- temp = temp ^ SEECK;
- aic_outb(p, temp, SEECTL);
- CLOCK_PULSE(p);
- }
- /*
- * Send the 6 or 8 bit address (MSB first, LSB last).
- */
- for (i = ((int) chip - 1); i >= 0; i--)
- {
- temp = k + offset;
- temp = (temp >> i) & 1; /* Mask out all but lower bit. */
- temp = SEEMS | SEECS | (temp << 1);
- aic_outb(p, temp, SEECTL);
- CLOCK_PULSE(p);
- temp = temp ^ SEECK;
- aic_outb(p, temp, SEECTL);
- CLOCK_PULSE(p);
- }
-
- /*
- * Now read the 16 bit register. An initial 0 precedes the
- * register contents which begins with bit 15 (MSB) and ends
- * with bit 0 (LSB). The initial 0 will be shifted off the
- * top of our word as we let the loop run from 0 to 16.
- */
- for (i = 0; i <= 16; i++)
- {
- temp = SEEMS | SEECS;
- aic_outb(p, temp, SEECTL);
- CLOCK_PULSE(p);
- temp = temp ^ SEECK;
- scarray[k] = (scarray[k] << 1) | (aic_inb(p, SEECTL) & SEEDI);
- aic_outb(p, temp, SEECTL);
- CLOCK_PULSE(p);
- }
-
- /*
- * The serial EEPROM should have a checksum in the last word.
- * Keep a running checksum for all words read except for the
- * last word. We'll verify the checksum after all words have
- * been read.
- */
- if (k < (len - 1))
- {
- checksum = checksum + scarray[k];
- }
-
- /*
- * Reset the chip select for the next command cycle.
- */
- aic_outb(p, SEEMS, SEECTL);
- CLOCK_PULSE(p);
- aic_outb(p, SEEMS | SEECK, SEECTL);
- CLOCK_PULSE(p);
- aic_outb(p, SEEMS, SEECTL);
- CLOCK_PULSE(p);
- }
-
- /*
- * Release access to the memory port and the serial EEPROM.
- */
- release_seeprom(p);
-
-#if 0
- printk("Computed checksum 0x%x, checksum read 0x%x\n",
- checksum, scarray[len - 1]);
- printk("Serial EEPROM:");
- for (k = 0; k < len; k++)
- {
- if (((k % 8) == 0) && (k != 0))
- {
- printk("\n ");
- }
- printk(" 0x%x", scarray[k]);
- }
- printk("\n");
-#endif
- if ( (checksum != scarray[len - 1]) || (checksum == 0) )
- {
- return (0);
- }
-
- return (1);
-}
-
-/*+F*************************************************************************
- * Function:
- * read_brdctl
- *
- * Description:
- * Reads the BRDCTL register.
- *-F*************************************************************************/
-static unsigned char
-read_brdctl(struct aic7xxx_host *p)
-{
- unsigned char brdctl, value;
-
- /*
- * Make sure the SEEPROM is ready before we access it
- */
- CLOCK_PULSE(p);
- if (p->features & AHC_ULTRA2)
- {
- brdctl = BRDRW_ULTRA2;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- value = aic_inb(p, BRDCTL);
- CLOCK_PULSE(p);
- return(value);
- }
- brdctl = BRDRW;
- if ( !((p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) ||
- (p->flags & AHC_CHNLB) )
- {
- brdctl |= BRDCS;
- }
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- value = aic_inb(p, BRDCTL);
- CLOCK_PULSE(p);
- aic_outb(p, 0, BRDCTL);
- CLOCK_PULSE(p);
- return (value);
-}
-
-/*+F*************************************************************************
- * Function:
- * write_brdctl
- *
- * Description:
- * Writes a value to the BRDCTL register.
- *-F*************************************************************************/
-static void
-write_brdctl(struct aic7xxx_host *p, unsigned char value)
-{
- unsigned char brdctl;
-
- /*
- * Make sure the SEEPROM is ready before we access it
- */
- CLOCK_PULSE(p);
- if (p->features & AHC_ULTRA2)
- {
- brdctl = value;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- brdctl |= BRDSTB_ULTRA2;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- brdctl &= ~BRDSTB_ULTRA2;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- read_brdctl(p);
- CLOCK_PULSE(p);
- }
- else
- {
- brdctl = BRDSTB;
- if ( !((p->chip & AHC_CHIPID_MASK) == AHC_AIC7895) ||
- (p->flags & AHC_CHNLB) )
- {
- brdctl |= BRDCS;
- }
- brdctl = BRDSTB | BRDCS;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- brdctl |= value;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- brdctl &= ~BRDSTB;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- brdctl &= ~BRDCS;
- aic_outb(p, brdctl, BRDCTL);
- CLOCK_PULSE(p);
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic785x_cable_detect
- *
- * Description:
- * Detect the cables that are present on aic785x class controller chips
- *-F*************************************************************************/
-static void
-aic785x_cable_detect(struct aic7xxx_host *p, int *int_50,
- int *ext_present, int *eeprom)
-{
- unsigned char brdctl;
-
- aic_outb(p, BRDRW | BRDCS, BRDCTL);
- CLOCK_PULSE(p);
- aic_outb(p, 0, BRDCTL);
- CLOCK_PULSE(p);
- brdctl = aic_inb(p, BRDCTL);
- CLOCK_PULSE(p);
- *int_50 = !(brdctl & BRDDAT5);
- *ext_present = !(brdctl & BRDDAT6);
- *eeprom = (aic_inb(p, SPIOCAP) & EEPROM);
-}
-
-#undef CLOCK_PULSE
-
-/*+F*************************************************************************
- * Function:
- * aic2940_uwpro_cable_detect
- *
- * Description:
- * Detect the cables that are present on the 2940-UWPro cards
- *
- * NOTE: This function assumes the SEEPROM will have already been acquired
- * prior to invocation of this function.
- *-F*************************************************************************/
-static void
-aic2940_uwpro_wide_cable_detect(struct aic7xxx_host *p, int *int_68,
- int *ext_68, int *eeprom)
-{
- unsigned char brdctl;
-
- /*
- * First read the status of our cables. Set the rom bank to
- * 0 since the bank setting serves as a multiplexor for the
- * cable detection logic. BRDDAT5 controls the bank switch.
- */
- write_brdctl(p, 0);
-
- /*
- * Now we read the state of the internal 68 connector. BRDDAT6
- * is don't care, BRDDAT7 is internal 68. The cable is
- * present if the bit is 0
- */
- brdctl = read_brdctl(p);
- *int_68 = !(brdctl & BRDDAT7);
-
- /*
- * Set the bank bit in brdctl and then read the external cable state
- * and the EEPROM status
- */
- write_brdctl(p, BRDDAT5);
- brdctl = read_brdctl(p);
-
- *ext_68 = !(brdctl & BRDDAT6);
- *eeprom = !(brdctl & BRDDAT7);
-
- /*
- * We're done, the calling function will release the SEEPROM for us
- */
-}
-
-/*+F*************************************************************************
- * Function:
- * aic787x_cable_detect
- *
- * Description:
- * Detect the cables that are present on aic787x class controller chips
- *
- * NOTE: This function assumes the SEEPROM will have already been acquired
- * prior to invocation of this function.
- *-F*************************************************************************/
-static void
-aic787x_cable_detect(struct aic7xxx_host *p, int *int_50, int *int_68,
- int *ext_present, int *eeprom)
-{
- unsigned char brdctl;
-
- /*
- * First read the status of our cables. Set the rom bank to
- * 0 since the bank setting serves as a multiplexor for the
- * cable detection logic. BRDDAT5 controls the bank switch.
- */
- write_brdctl(p, 0);
-
- /*
- * Now we read the state of the two internal connectors. BRDDAT6
- * is internal 50, BRDDAT7 is internal 68. For each, the cable is
- * present if the bit is 0
- */
- brdctl = read_brdctl(p);
- *int_50 = !(brdctl & BRDDAT6);
- *int_68 = !(brdctl & BRDDAT7);
-
- /*
- * Set the bank bit in brdctl and then read the external cable state
- * and the EEPROM status
- */
- write_brdctl(p, BRDDAT5);
- brdctl = read_brdctl(p);
-
- *ext_present = !(brdctl & BRDDAT6);
- *eeprom = !(brdctl & BRDDAT7);
-
- /*
- * We're done, the calling function will release the SEEPROM for us
- */
-}
-
-/*+F*************************************************************************
- * Function:
- * aic787x_ultra2_term_detect
- *
- * Description:
- * Detect the termination settings present on ultra2 class controllers
- *
- * NOTE: This function assumes the SEEPROM will have already been acquired
- * prior to invocation of this function.
- *-F*************************************************************************/
-static void
-aic7xxx_ultra2_term_detect(struct aic7xxx_host *p, int *enableSE_low,
- int *enableSE_high, int *enableLVD_low,
- int *enableLVD_high, int *eprom_present)
-{
- unsigned char brdctl;
-
- brdctl = read_brdctl(p);
-
- *eprom_present = (brdctl & BRDDAT7);
- *enableSE_high = (brdctl & BRDDAT6);
- *enableSE_low = (brdctl & BRDDAT5);
- *enableLVD_high = (brdctl & BRDDAT4);
- *enableLVD_low = (brdctl & BRDDAT3);
-}
-
-/*+F*************************************************************************
- * Function:
- * configure_termination
- *
- * Description:
- * Configures the termination settings on PCI adapters that have
- * SEEPROMs available.
- *-F*************************************************************************/
-static void
-configure_termination(struct aic7xxx_host *p)
-{
- int internal50_present = 0;
- int internal68_present = 0;
- int external_present = 0;
- int eprom_present = 0;
- int enableSE_low = 0;
- int enableSE_high = 0;
- int enableLVD_low = 0;
- int enableLVD_high = 0;
- unsigned char brddat = 0;
- unsigned char max_target = 0;
- unsigned char sxfrctl1 = aic_inb(p, SXFRCTL1);
-
- if (acquire_seeprom(p))
- {
- if (p->features & (AHC_WIDE|AHC_TWIN))
- max_target = 16;
- else
- max_target = 8;
- aic_outb(p, SEEMS | SEECS, SEECTL);
- sxfrctl1 &= ~STPWEN;
- /*
- * The termination/cable detection logic is split into three distinct
- * groups. Ultra2 and later controllers, 2940UW-Pro controllers, and
- * older 7850, 7860, 7870, 7880, and 7895 controllers. Each has its
- * own unique way of detecting their cables and writing the results
- * back to the card.
- */
- if (p->features & AHC_ULTRA2)
- {
- /*
- * As long as user hasn't overridden term settings, always check the
- * cable detection logic
- */
- if (aic7xxx_override_term == -1)
- {
- aic7xxx_ultra2_term_detect(p, &enableSE_low, &enableSE_high,
- &enableLVD_low, &enableLVD_high,
- &eprom_present);
- }
-
- /*
- * If the user is overriding settings, then they have been preserved
- * to here as fake adapter_control entries. Parse them and allow
- * them to override the detected settings (if we even did detection).
- */
- if (!(p->adapter_control & CFSEAUTOTERM))
- {
- enableSE_low = (p->adapter_control & CFSTERM);
- enableSE_high = (p->adapter_control & CFWSTERM);
- }
- if (!(p->adapter_control & CFAUTOTERM))
- {
- enableLVD_low = enableLVD_high = (p->adapter_control & CFLVDSTERM);
- }
-
- /*
- * Now take those settings that we have and translate them into the
- * values that must be written into the registers.
- *
- * Flash Enable = BRDDAT7
- * Secondary High Term Enable = BRDDAT6
- * Secondary Low Term Enable = BRDDAT5
- * LVD/Primary High Term Enable = BRDDAT4
- * LVD/Primary Low Term Enable = STPWEN bit in SXFRCTL1
- */
- if (enableLVD_low != 0)
- {
- sxfrctl1 |= STPWEN;
- p->flags |= AHC_TERM_ENB_LVD;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) LVD/Primary Low byte termination "
- "Enabled\n", p->host_no);
- }
-
- if (enableLVD_high != 0)
- {
- brddat |= BRDDAT4;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) LVD/Primary High byte termination "
- "Enabled\n", p->host_no);
- }
-
- if (enableSE_low != 0)
- {
- brddat |= BRDDAT5;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Secondary Low byte termination "
- "Enabled\n", p->host_no);
- }
-
- if (enableSE_high != 0)
- {
- brddat |= BRDDAT6;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Secondary High byte termination "
- "Enabled\n", p->host_no);
- }
- }
- else if (p->features & AHC_NEW_AUTOTERM)
- {
- /*
- * The 50 pin connector termination is controlled by STPWEN in the
- * SXFRCTL1 register. Since the Adaptec docs typically say the
- * controller is not allowed to be in the middle of a cable and
- * this is the only connection on that stub of the bus, there is
- * no need to even check for narrow termination, it's simply
- * always on.
- */
- sxfrctl1 |= STPWEN;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Narrow channel termination Enabled\n",
- p->host_no);
-
- if (p->adapter_control & CFAUTOTERM)
- {
- aic2940_uwpro_wide_cable_detect(p, &internal68_present,
- &external_present,
- &eprom_present);
- printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Int-68 %s, "
- "Ext-68 %s)\n", p->host_no,
- "Don't Care",
- internal68_present ? "YES" : "NO",
- external_present ? "YES" : "NO");
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) EEPROM %s present.\n", p->host_no,
- eprom_present ? "is" : "is not");
- if (internal68_present && external_present)
- {
- brddat = 0;
- p->flags &= ~AHC_TERM_ENB_SE_HIGH;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Wide channel termination Disabled\n",
- p->host_no);
- }
- else
- {
- brddat = BRDDAT6;
- p->flags |= AHC_TERM_ENB_SE_HIGH;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Wide channel termination Enabled\n",
- p->host_no);
- }
- }
- else
- {
- /*
- * The termination of the Wide channel is done more like normal
- * though, and the setting of this termination is done by writing
- * either a 0 or 1 to BRDDAT6 of the BRDDAT register
- */
- if (p->adapter_control & CFWSTERM)
- {
- brddat = BRDDAT6;
- p->flags |= AHC_TERM_ENB_SE_HIGH;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Wide channel termination Enabled\n",
- p->host_no);
- }
- else
- {
- brddat = 0;
- }
- }
- }
- else
- {
- if (p->adapter_control & CFAUTOTERM)
- {
- if (p->flags & AHC_MOTHERBOARD)
- {
- printk(KERN_INFO "(scsi%d) Warning - detected auto-termination\n",
- p->host_no);
- printk(KERN_INFO "(scsi%d) Please verify driver detected settings "
- "are correct.\n", p->host_no);
- printk(KERN_INFO "(scsi%d) If not, then please properly set the "
- "device termination\n", p->host_no);
- printk(KERN_INFO "(scsi%d) in the Adaptec SCSI BIOS by hitting "
- "CTRL-A when prompted\n", p->host_no);
- printk(KERN_INFO "(scsi%d) during machine bootup.\n", p->host_no);
- }
- /* Configure auto termination. */
-
- if ( (p->chip & AHC_CHIPID_MASK) >= AHC_AIC7870 )
- {
- aic787x_cable_detect(p, &internal50_present, &internal68_present,
- &external_present, &eprom_present);
- }
- else
- {
- aic785x_cable_detect(p, &internal50_present, &external_present,
- &eprom_present);
- }
-
- if (max_target <= 8)
- internal68_present = 0;
-
- if (max_target > 8)
- {
- printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Int-68 %s, "
- "Ext-68 %s)\n", p->host_no,
- internal50_present ? "YES" : "NO",
- internal68_present ? "YES" : "NO",
- external_present ? "YES" : "NO");
- }
- else
- {
- printk(KERN_INFO "(scsi%d) Cables present (Int-50 %s, Ext-50 %s)\n",
- p->host_no,
- internal50_present ? "YES" : "NO",
- external_present ? "YES" : "NO");
- }
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) EEPROM %s present.\n", p->host_no,
- eprom_present ? "is" : "is not");
-
- /*
- * Now set the termination based on what we found. BRDDAT6
- * controls wide termination enable.
- * Flash Enable = BRDDAT7
- * SE High Term Enable = BRDDAT6
- */
- if (internal50_present && internal68_present && external_present)
- {
- printk(KERN_INFO "(scsi%d) Illegal cable configuration!! Only two\n",
- p->host_no);
- printk(KERN_INFO "(scsi%d) connectors on the SCSI controller may be "
- "in use at a time!\n", p->host_no);
- /*
- * Force termination (low and high byte) on. This is safer than
- * leaving it completely off, especially since this message comes
- * most often from motherboard controllers that don't even have 3
- * connectors, but instead are failing the cable detection.
- */
- internal50_present = external_present = 0;
- enableSE_high = enableSE_low = 1;
- }
-
- if ((max_target > 8) &&
- ((external_present == 0) || (internal68_present == 0)) )
- {
- brddat |= BRDDAT6;
- p->flags |= AHC_TERM_ENB_SE_HIGH;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) SE High byte termination Enabled\n",
- p->host_no);
- }
-
- if ( ((internal50_present ? 1 : 0) +
- (internal68_present ? 1 : 0) +
- (external_present ? 1 : 0)) <= 1 )
- {
- sxfrctl1 |= STPWEN;
- p->flags |= AHC_TERM_ENB_SE_LOW;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) SE Low byte termination Enabled\n",
- p->host_no);
- }
- }
- else /* p->adapter_control & CFAUTOTERM */
- {
- if (p->adapter_control & CFSTERM)
- {
- sxfrctl1 |= STPWEN;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) SE Low byte termination Enabled\n",
- p->host_no);
- }
-
- if (p->adapter_control & CFWSTERM)
- {
- brddat |= BRDDAT6;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) SE High byte termination Enabled\n",
- p->host_no);
- }
- }
- }
-
- aic_outb(p, sxfrctl1, SXFRCTL1);
- write_brdctl(p, brddat);
- release_seeprom(p);
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * detect_maxscb
- *
- * Description:
- * Detects the maximum number of SCBs for the controller and returns
- * the count and a mask in p (p->maxscbs, p->qcntmask).
- *-F*************************************************************************/
-static void
-detect_maxscb(struct aic7xxx_host *p)
-{
- int i;
-
- /*
- * It's possible that we've already done this for multichannel
- * adapters.
- */
- if (p->scb_data->maxhscbs == 0)
- {
- /*
- * We haven't initialized the SCB settings yet. Walk the SCBs to
- * determince how many there are.
- */
- aic_outb(p, 0, FREE_SCBH);
-
- for (i = 0; i < AIC7XXX_MAXSCB; i++)
- {
- aic_outb(p, i, SCBPTR);
- aic_outb(p, i, SCB_CONTROL);
- if (aic_inb(p, SCB_CONTROL) != i)
- break;
- aic_outb(p, 0, SCBPTR);
- if (aic_inb(p, SCB_CONTROL) != 0)
- break;
-
- aic_outb(p, i, SCBPTR);
- aic_outb(p, 0, SCB_CONTROL); /* Clear the control byte. */
- aic_outb(p, i + 1, SCB_NEXT); /* Set the next pointer. */
- aic_outb(p, SCB_LIST_NULL, SCB_TAG); /* Make the tag invalid. */
- aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS); /* no busy untagged */
- aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+1);/* targets active yet */
- aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+2);
- aic_outb(p, SCB_LIST_NULL, SCB_BUSYTARGETS+3);
- }
-
- /* Make sure the last SCB terminates the free list. */
- aic_outb(p, i - 1, SCBPTR);
- aic_outb(p, SCB_LIST_NULL, SCB_NEXT);
-
- /* Ensure we clear the first (0) SCBs control byte. */
- aic_outb(p, 0, SCBPTR);
- aic_outb(p, 0, SCB_CONTROL);
-
- p->scb_data->maxhscbs = i;
- /*
- * Use direct indexing instead for speed
- */
- if ( i == AIC7XXX_MAXSCB )
- p->flags &= ~AHC_PAGESCBS;
- }
-
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_register
- *
- * Description:
- * Register a Adaptec aic7xxx chip SCSI controller with the kernel.
- *-F*************************************************************************/
-static int
-aic7xxx_register(Scsi_Host_Template *template, struct aic7xxx_host *p,
- int reset_delay)
-{
- int i, result;
- int max_targets;
- int found = 1;
- unsigned char term, scsi_conf;
- struct Scsi_Host *host;
-
- host = p->host;
-
- p->scb_data->maxscbs = AIC7XXX_MAXSCB;
- host->can_queue = AIC7XXX_MAXSCB;
- host->cmd_per_lun = 3;
- host->sg_tablesize = AIC7XXX_MAX_SG;
- host->select_queue_depths = aic7xxx_select_queue_depth;
- host->this_id = p->scsi_id;
- host->io_port = p->base;
- host->n_io_port = 0xFF;
- host->base = p->mbase;
- host->irq = p->irq;
- if (p->features & AHC_WIDE)
- {
- host->max_id = 16;
- }
- if (p->features & AHC_TWIN)
- {
- host->max_channel = 1;
- }
-
- p->host = host;
- p->host_no = host->host_no;
- host->unique_id = p->instance;
- p->isr_count = 0;
- p->next = NULL;
- p->completeq.head = NULL;
- p->completeq.tail = NULL;
- scbq_init(&p->scb_data->free_scbs);
- scbq_init(&p->waiting_scbs);
- init_timer(&p->dev_timer);
- p->dev_timer.data = (unsigned long)p;
- p->dev_timer.function = (void *)aic7xxx_timer;
- p->dev_timer_active = 0;
-
- /*
- * We currently have no commands of any type
- */
- p->qinfifonext = 0;
- p->qoutfifonext = 0;
-
- for (i = 0; i < MAX_TARGETS; i++)
- {
- p->dev_commands_sent[i] = 0;
- p->dev_flags[i] = 0;
- p->dev_active_cmds[i] = 0;
- p->dev_last_queue_full[i] = 0;
- p->dev_last_queue_full_count[i] = 0;
- p->dev_max_queue_depth[i] = 1;
- p->dev_temp_queue_depth[i] = 1;
- p->dev_expires[i] = 0;
- scbq_init(&p->delayed_scbs[i]);
- }
-
- printk(KERN_INFO "(scsi%d) <%s> found at ", p->host_no,
- board_names[p->board_name_index]);
- switch(p->chip)
- {
- case (AHC_AIC7770|AHC_EISA):
- printk("EISA slot %d\n", p->pci_device_fn);
- break;
- case (AHC_AIC7770|AHC_VL):
- printk("VLB slot %d\n", p->pci_device_fn);
- break;
- default:
- printk("PCI %d/%d/%d\n", p->pci_bus, PCI_SLOT(p->pci_device_fn),
- PCI_FUNC(p->pci_device_fn));
- break;
- }
- if (p->features & AHC_TWIN)
- {
- printk(KERN_INFO "(scsi%d) Twin Channel, A SCSI ID %d, B SCSI ID %d, ",
- p->host_no, p->scsi_id, p->scsi_id_b);
- }
- else
- {
- char *channel;
-
- channel = "";
-
- if ((p->flags & AHC_MULTI_CHANNEL) != 0)
- {
- channel = " A";
-
- if ( (p->flags & (AHC_CHNLB|AHC_CHNLC)) != 0 )
- {
- channel = (p->flags & AHC_CHNLB) ? " B" : " C";
- }
- }
- if (p->features & AHC_WIDE)
- {
- printk(KERN_INFO "(scsi%d) Wide ", p->host_no);
- }
- else
- {
- printk(KERN_INFO "(scsi%d) Narrow ", p->host_no);
- }
- printk("Channel%s, SCSI ID=%d, ", channel, p->scsi_id);
- }
- aic_outb(p, 0, SEQ_FLAGS);
-
- detect_maxscb(p);
-
- printk("%d/%d SCBs\n", p->scb_data->maxhscbs, p->scb_data->maxscbs);
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk(KERN_INFO "(scsi%d) BIOS %sabled, IO Port 0x%lx, IRQ %d\n",
- p->host_no, (p->flags & AHC_BIOS_ENABLED) ? "en" : "dis",
- p->base, p->irq);
- printk(KERN_INFO "(scsi%d) IO Memory at 0x%lx, MMAP Memory at 0x%lx\n",
- p->host_no, p->mbase, (unsigned long)p->maddr);
- }
-
-#ifdef CONFIG_PCI
- /*
- * Now that we know our instance number, we can set the flags we need to
- * force termination if need be.
- */
- if (aic7xxx_stpwlev != -1)
- {
- /*
- * This option only applies to PCI controllers.
- */
- if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI)
- {
- unsigned char devconfig;
-
- pci_read_config_byte(p->pdev, DEVCONFIG, &devconfig);
- if ( (aic7xxx_stpwlev >> p->instance) & 0x01 )
- {
- devconfig |= STPWLEVEL;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk("(scsi%d) Force setting STPWLEVEL bit\n", p->host_no);
- }
- else
- {
- devconfig &= ~STPWLEVEL;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk("(scsi%d) Force clearing STPWLEVEL bit\n", p->host_no);
- }
- pci_write_config_byte(p->pdev, DEVCONFIG, devconfig);
- }
- }
-#endif
-
- /*
- * That took care of devconfig and stpwlev, now for the actual termination
- * settings.
- */
- if (aic7xxx_override_term != -1)
- {
- /*
- * Again, this only applies to PCI controllers. We don't have problems
- * with the termination on 274x controllers to the best of my knowledge.
- */
- if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI)
- {
- unsigned char term_override;
-
- term_override = ( (aic7xxx_override_term >> (p->instance * 4)) & 0x0f);
- p->adapter_control &=
- ~(CFSTERM|CFWSTERM|CFLVDSTERM|CFAUTOTERM|CFSEAUTOTERM);
- if ( (p->features & AHC_ULTRA2) && (term_override & 0x0c) )
- {
- p->adapter_control |= CFLVDSTERM;
- }
- if (term_override & 0x02)
- {
- p->adapter_control |= CFWSTERM;
- }
- if (term_override & 0x01)
- {
- p->adapter_control |= CFSTERM;
- }
- }
- }
-
- if ( (p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1) )
- {
- if (p->features & AHC_SPIOCAP)
- {
- if ( aic_inb(p, SPIOCAP) & SSPIOCPS )
- /*
- * Update the settings in sxfrctl1 to match the termination
- * settings.
- */
- configure_termination(p);
- }
- else if ((p->chip & AHC_CHIPID_MASK) >= AHC_AIC7870)
- {
- configure_termination(p);
- }
- }
-
- /*
- * Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1, for both channels
- */
- if (p->features & AHC_TWIN)
- {
- /* Select channel B */
- aic_outb(p, aic_inb(p, SBLKCTL) | SELBUSB, SBLKCTL);
-
- if ((p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1))
- term = (aic_inb(p, SXFRCTL1) & STPWEN);
- else
- term = ((p->flags & AHC_TERM_ENB_B) ? STPWEN : 0);
-
- aic_outb(p, p->scsi_id_b, SCSIID);
- scsi_conf = aic_inb(p, SCSICONF + 1);
- aic_outb(p, DFON | SPIOEN, SXFRCTL0);
- aic_outb(p, (scsi_conf & ENSPCHK) | aic7xxx_seltime | term |
- ENSTIMER | ACTNEGEN, SXFRCTL1);
- aic_outb(p, 0, SIMODE0);
- aic_outb(p, ENSELTIMO | ENSCSIRST | ENSCSIPERR, SIMODE1);
- aic_outb(p, 0, SCSIRATE);
-
- /* Select channel A */
- aic_outb(p, aic_inb(p, SBLKCTL) & ~SELBUSB, SBLKCTL);
- }
-
- if (p->features & AHC_ULTRA2)
- {
- aic_outb(p, p->scsi_id, SCSIID_ULTRA2);
- }
- else
- {
- aic_outb(p, p->scsi_id, SCSIID);
- }
- if ((p->flags & AHC_SEEPROM_FOUND) || (aic7xxx_override_term != -1))
- term = (aic_inb(p, SXFRCTL1) & STPWEN);
- else
- term = ((p->flags & (AHC_TERM_ENB_A|AHC_TERM_ENB_LVD)) ? STPWEN : 0);
- scsi_conf = aic_inb(p, SCSICONF);
- aic_outb(p, DFON | SPIOEN, SXFRCTL0);
- aic_outb(p, (scsi_conf & ENSPCHK) | aic7xxx_seltime | term |
- ENSTIMER | ACTNEGEN, SXFRCTL1);
- aic_outb(p, 0, SIMODE0);
- /*
- * If we are a cardbus adapter then don't enable SCSI reset detection.
- * We shouldn't likely be sharing SCSI busses with someone else, and
- * if we don't have a cable currently plugged into the controller then
- * we won't have a power source for the SCSI termination, which means
- * we'll see infinite incoming bus resets.
- */
- if(p->flags & AHC_NO_STPWEN)
- aic_outb(p, ENSELTIMO | ENSCSIPERR, SIMODE1);
- else
- aic_outb(p, ENSELTIMO | ENSCSIRST | ENSCSIPERR, SIMODE1);
- aic_outb(p, 0, SCSIRATE);
- if ( p->features & AHC_ULTRA2)
- aic_outb(p, 0, SCSIOFFSET);
-
- /*
- * Look at the information that board initialization or the board
- * BIOS has left us. In the lower four bits of each target's
- * scratch space any value other than 0 indicates that we should
- * initiate synchronous transfers. If it's zero, the user or the
- * BIOS has decided to disable synchronous negotiation to that
- * target so we don't activate the needsdtr flag.
- */
- if ((p->features & (AHC_TWIN|AHC_WIDE)) == 0)
- {
- max_targets = 8;
- }
- else
- {
- max_targets = 16;
- }
-
- if (!(aic7xxx_no_reset))
- {
- /*
- * If we reset the bus, then clear the transfer settings, else leave
- * them be
- */
- for (i = 0; i < max_targets; i++)
- {
- aic_outb(p, 0, TARG_SCSIRATE + i);
- if (p->features & AHC_ULTRA2)
- {
- aic_outb(p, 0, TARG_OFFSET + i);
- }
- p->transinfo[i].cur_offset = 0;
- p->transinfo[i].cur_period = 0;
- p->transinfo[i].cur_width = MSG_EXT_WDTR_BUS_8_BIT;
- }
-
- /*
- * If we reset the bus, then clear the transfer settings, else leave
- * them be.
- */
- aic_outb(p, 0, ULTRA_ENB);
- aic_outb(p, 0, ULTRA_ENB + 1);
- p->ultraenb = 0;
- }
-
- /*
- * Allocate enough hardware scbs to handle the maximum number of
- * concurrent transactions we can have. We have to make sure that
- * the allocated memory is contiguous memory. The Linux kmalloc
- * routine should only allocate contiguous memory, but note that
- * this could be a problem if kmalloc() is changed.
- */
- {
- size_t array_size;
- unsigned int hscb_physaddr;
-
- array_size = p->scb_data->maxscbs * sizeof(struct aic7xxx_hwscb);
- if (p->scb_data->hscbs == NULL)
- {
- /* pci_alloc_consistent enforces the alignment already and
- * clears the area as well.
- */
- p->scb_data->hscbs = pci_alloc_consistent(p->pdev, array_size,
- &p->scb_data->hscbs_dma);
- /* We have to use pci_free_consistent, not kfree */
- p->scb_data->hscb_kmalloc_ptr = NULL;
- p->scb_data->hscbs_dma_len = array_size;
- }
- if (p->scb_data->hscbs == NULL)
- {
- printk("(scsi%d) Unable to allocate hardware SCB array; "
- "failing detection.\n", p->host_no);
- aic_outb(p, 0, SIMODE1);
- p->irq = 0;
- return(0);
- }
-
- hscb_physaddr = p->scb_data->hscbs_dma;
- aic_outb(p, hscb_physaddr & 0xFF, HSCB_ADDR);
- aic_outb(p, (hscb_physaddr >> 8) & 0xFF, HSCB_ADDR + 1);
- aic_outb(p, (hscb_physaddr >> 16) & 0xFF, HSCB_ADDR + 2);
- aic_outb(p, (hscb_physaddr >> 24) & 0xFF, HSCB_ADDR + 3);
-
- /* Set up the fifo areas at the same time */
- p->untagged_scbs = pci_alloc_consistent(p->pdev, 3*256, &p->fifo_dma);
- if (p->untagged_scbs == NULL)
- {
- printk("(scsi%d) Unable to allocate hardware FIFO arrays; "
- "failing detection.\n", p->host_no);
- p->irq = 0;
- return(0);
- }
-
- p->qoutfifo = p->untagged_scbs + 256;
- p->qinfifo = p->qoutfifo + 256;
- for (i = 0; i < 256; i++)
- {
- p->untagged_scbs[i] = SCB_LIST_NULL;
- p->qinfifo[i] = SCB_LIST_NULL;
- p->qoutfifo[i] = SCB_LIST_NULL;
- }
-
- hscb_physaddr = p->fifo_dma;
- aic_outb(p, hscb_physaddr & 0xFF, SCBID_ADDR);
- aic_outb(p, (hscb_physaddr >> 8) & 0xFF, SCBID_ADDR + 1);
- aic_outb(p, (hscb_physaddr >> 16) & 0xFF, SCBID_ADDR + 2);
- aic_outb(p, (hscb_physaddr >> 24) & 0xFF, SCBID_ADDR + 3);
- }
-
- /* The Q-FIFOs we just set up are all empty */
- aic_outb(p, 0, QINPOS);
- aic_outb(p, 0, KERNEL_QINPOS);
- aic_outb(p, 0, QOUTPOS);
-
- if(p->features & AHC_QUEUE_REGS)
- {
- aic_outb(p, SCB_QSIZE_256, QOFF_CTLSTA);
- aic_outb(p, 0, SDSCB_QOFF);
- aic_outb(p, 0, SNSCB_QOFF);
- aic_outb(p, 0, HNSCB_QOFF);
- }
-
- /*
- * We don't have any waiting selections or disconnected SCBs.
- */
- aic_outb(p, SCB_LIST_NULL, WAITING_SCBH);
- aic_outb(p, SCB_LIST_NULL, DISCONNECTED_SCBH);
-
- /*
- * Message out buffer starts empty
- */
- aic_outb(p, MSG_NOOP, MSG_OUT);
- aic_outb(p, MSG_NOOP, LAST_MSG);
-
- /*
- * Set all the other asundry items that haven't been set yet.
- * This includes just dumping init values to a lot of registers simply
- * to make sure they've been touched and are ready for use parity wise
- * speaking.
- */
- aic_outb(p, 0, TMODE_CMDADDR);
- aic_outb(p, 0, TMODE_CMDADDR + 1);
- aic_outb(p, 0, TMODE_CMDADDR + 2);
- aic_outb(p, 0, TMODE_CMDADDR + 3);
- aic_outb(p, 0, TMODE_CMDADDR_NEXT);
-
- /*
- * Link us into the list of valid hosts
- */
- p->next = first_aic7xxx;
- first_aic7xxx = p;
-
- /*
- * Allocate the first set of scbs for this controller. This is to stream-
- * line code elsewhere in the driver. If we have to check for the existence
- * of scbs in certain code sections, it slows things down. However, as
- * soon as we register the IRQ for this card, we could get an interrupt that
- * includes possibly the SCSI_RSTI interrupt. If we catch that interrupt
- * then we are likely to segfault if we don't have at least one chunk of
- * SCBs allocated or add checks all through the reset code to make sure
- * that the SCBs have been allocated which is an invalid running condition
- * and therefore I think it's preferable to simply pre-allocate the first
- * chunk of SCBs.
- */
- aic7xxx_allocate_scb(p);
-
- /*
- * Load the sequencer program, then re-enable the board -
- * resetting the AIC-7770 disables it, leaving the lights
- * on with nobody home.
- */
- aic7xxx_loadseq(p);
-
- /*
- * Make sure the AUTOFLUSHDIS bit is *not* set in the SBLKCTL register
- */
- aic_outb(p, aic_inb(p, SBLKCTL) & ~AUTOFLUSHDIS, SBLKCTL);
-
- if ( (p->chip & AHC_CHIPID_MASK) == AHC_AIC7770 )
- {
- aic_outb(p, ENABLE, BCTL); /* Enable the boards BUS drivers. */
- }
-
- if ( !(aic7xxx_no_reset) )
- {
- if (p->features & AHC_TWIN)
- {
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(KERN_INFO "(scsi%d) Resetting channel B\n", p->host_no);
- aic_outb(p, aic_inb(p, SBLKCTL) | SELBUSB, SBLKCTL);
- aic7xxx_reset_current_bus(p);
- aic_outb(p, aic_inb(p, SBLKCTL) & ~SELBUSB, SBLKCTL);
- }
- /* Reset SCSI bus A. */
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- { /* In case we are a 3940, 3985, or 7895, print the right channel */
- char *channel = "";
- if (p->flags & AHC_MULTI_CHANNEL)
- {
- channel = " A";
- if (p->flags & (AHC_CHNLB|AHC_CHNLC))
- channel = (p->flags & AHC_CHNLB) ? " B" : " C";
- }
- printk(KERN_INFO "(scsi%d) Resetting channel%s\n", p->host_no, channel);
- }
-
- aic7xxx_reset_current_bus(p);
-
- /*
- * Delay for the reset delay by setting the timer, this will delay
- * future commands sent to any devices.
- */
- p->flags |= AHC_RESET_DELAY;
- for(i=0; i<MAX_TARGETS; i++)
- {
- p->dev_expires[i] = jiffies + (4 * HZ);
- p->dev_timer_active |= (0x01 << i);
- }
- p->dev_timer.expires = p->dev_expires[p->scsi_id];
- add_timer(&p->dev_timer);
- p->dev_timer_active |= (0x01 << MAX_TARGETS);
- }
- else
- {
- if (!reset_delay)
- {
- printk(KERN_INFO "(scsi%d) Not resetting SCSI bus. Note: Don't use "
- "the no_reset\n", p->host_no);
- printk(KERN_INFO "(scsi%d) option unless you have a verifiable need "
- "for it.\n", p->host_no);
- }
- }
-
- /*
- * Register IRQ with the kernel. Only allow sharing IRQs with
- * PCI devices.
- */
- if (!(p->chip & AHC_PCI))
- {
- result = (request_irq(p->irq, do_aic7xxx_isr, 0, "aic7xxx", p));
- }
- else
- {
- result = (request_irq(p->irq, do_aic7xxx_isr, SA_SHIRQ,
- "aic7xxx", p));
- if (result < 0)
- {
- result = (request_irq(p->irq, do_aic7xxx_isr, SA_INTERRUPT | SA_SHIRQ,
- "aic7xxx", p));
- }
- }
- if (result < 0)
- {
- printk(KERN_WARNING "(scsi%d) Couldn't register IRQ %d, ignoring "
- "controller.\n", p->host_no, p->irq);
- aic_outb(p, 0, SIMODE1);
- p->irq = 0;
- return (0);
- }
-
- if(aic_inb(p, INTSTAT) & INT_PEND)
- printk(INFO_LEAD "spurious interrupt during configuration, cleared.\n",
- p->host_no, -1, -1 , -1);
- aic7xxx_clear_intstat(p);
-
- unpause_sequencer(p, /* unpause_always */ TRUE);
-
- return (found);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_chip_reset
- *
- * Description:
- * Perform a chip reset on the aic7xxx SCSI controller. The controller
- * is paused upon return.
- *-F*************************************************************************/
-int
-aic7xxx_chip_reset(struct aic7xxx_host *p)
-{
- unsigned char sblkctl;
- int wait;
-
- /*
- * For some 274x boards, we must clear the CHIPRST bit and pause
- * the sequencer. For some reason, this makes the driver work.
- */
- aic_outb(p, PAUSE | CHIPRST, HCNTRL);
-
- /*
- * In the future, we may call this function as a last resort for
- * error handling. Let's be nice and not do any unecessary delays.
- */
- wait = 1000; /* 1 msec (1000 * 1 msec) */
- while (--wait && !(aic_inb(p, HCNTRL) & CHIPRSTACK))
- {
- udelay(1); /* 1 usec */
- }
-
- pause_sequencer(p);
-
- sblkctl = aic_inb(p, SBLKCTL) & (SELBUSB|SELWIDE);
- if (p->chip & AHC_PCI)
- sblkctl &= ~SELBUSB;
- switch( sblkctl )
- {
- case 0: /* normal narrow card */
- break;
- case 2: /* Wide card */
- p->features |= AHC_WIDE;
- break;
- case 8: /* Twin card */
- p->features |= AHC_TWIN;
- p->flags |= AHC_MULTI_CHANNEL;
- break;
- default: /* hmmm...we don't know what this is */
- printk(KERN_WARNING "aic7xxx: Unsupported adapter type %d, ignoring.\n",
- aic_inb(p, SBLKCTL) & 0x0a);
- return(-1);
- }
- return(0);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_alloc
- *
- * Description:
- * Allocate and initialize a host structure. Returns NULL upon error
- * and a pointer to a aic7xxx_host struct upon success.
- *-F*************************************************************************/
-static struct aic7xxx_host *
-aic7xxx_alloc(Scsi_Host_Template *sht, struct aic7xxx_host *temp)
-{
- struct aic7xxx_host *p = NULL;
- struct Scsi_Host *host;
- int i;
-
- /*
- * Allocate a storage area by registering us with the mid-level
- * SCSI layer.
- */
- host = scsi_register(sht, sizeof(struct aic7xxx_host));
-
- if (host != NULL)
- {
- p = (struct aic7xxx_host *) host->hostdata;
- memset(p, 0, sizeof(struct aic7xxx_host));
- *p = *temp;
- p->host = host;
-
- p->scb_data = kmalloc(sizeof(scb_data_type), GFP_ATOMIC);
- if (p->scb_data != NULL)
- {
- memset(p->scb_data, 0, sizeof(scb_data_type));
- scbq_init (&p->scb_data->free_scbs);
- }
- else
- {
- /*
- * For some reason we don't have enough memory. Free the
- * allocated memory for the aic7xxx_host struct, and return NULL.
- */
- release_region(p->base, MAXREG - MINREG);
- scsi_unregister(host);
- return(NULL);
- }
- p->host_no = host->host_no;
- p->tagenable = 0;
- p->orderedtag = 0;
- for (i=0; i<MAX_TARGETS; i++)
- {
- p->transinfo[i].goal_period = 255;
- p->transinfo[i].goal_offset = 0;
- p->transinfo[i].goal_options = 0;
- p->transinfo[i].goal_width = MSG_EXT_WDTR_BUS_8_BIT;
- }
- DRIVER_LOCK_INIT
- }
- return (p);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_free
- *
- * Description:
- * Frees and releases all resources associated with an instance of
- * the driver (struct aic7xxx_host *).
- *-F*************************************************************************/
-static void
-aic7xxx_free(struct aic7xxx_host *p)
-{
- int i;
-
- /*
- * Free the allocated hardware SCB space.
- */
- if (p->scb_data != NULL)
- {
- struct aic7xxx_scb_dma *scb_dma = NULL;
- if (p->scb_data->hscbs != NULL)
- {
- pci_free_consistent(p->pdev, p->scb_data->hscbs_dma_len,
- p->scb_data->hscbs, p->scb_data->hscbs_dma);
- p->scb_data->hscbs = p->scb_data->hscb_kmalloc_ptr = NULL;
- }
- /*
- * Free the driver SCBs. These were allocated on an as-need
- * basis. We allocated these in groups depending on how many
- * we could fit into a given amount of RAM. The tail SCB for
- * these allocations has a pointer to the alloced area.
- */
- for (i = 0; i < p->scb_data->numscbs; i++)
- {
- if (p->scb_data->scb_array[i]->scb_dma != scb_dma)
- {
- scb_dma = p->scb_data->scb_array[i]->scb_dma;
- pci_free_consistent(p->pdev, scb_dma->dma_len,
- (void *)((unsigned long)scb_dma->dma_address
- - scb_dma->dma_offset),
- scb_dma->dma_address);
- }
- if (p->scb_data->scb_array[i]->kmalloc_ptr != NULL)
- kfree(p->scb_data->scb_array[i]->kmalloc_ptr);
- p->scb_data->scb_array[i] = NULL;
- }
-
- /*
- * Free the SCB data area.
- */
- kfree(p->scb_data);
- }
-
- /*
- * Free any alloced Scsi_Cmnd structures that might be around for
- * negotiation purposes....
- */
- for (i = 0; i < MAX_TARGETS; i++)
- {
- if(p->dev_dtr_cmnd[i])
- {
- if(p->dev_dtr_cmnd[i]->request_buffer)
- {
- kfree(p->dev_dtr_cmnd[i]->request_buffer);
- }
- kfree(p->dev_dtr_cmnd[i]);
- }
- }
-
- pci_free_consistent(p->pdev, 3*256, (void *)p->untagged_scbs, p->fifo_dma);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_load_seeprom
- *
- * Description:
- * Load the seeprom and configure adapter and target settings.
- * Returns 1 if the load was successful and 0 otherwise.
- *-F*************************************************************************/
-static void
-aic7xxx_load_seeprom(struct aic7xxx_host *p, unsigned char *sxfrctl1)
-{
- int have_seeprom = 0;
- int i, max_targets, mask;
- unsigned char scsirate, scsi_conf;
- unsigned short scarray[128];
- struct seeprom_config *sc = (struct seeprom_config *) scarray;
-
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk(KERN_INFO "aic7xxx: Loading serial EEPROM...");
- }
- switch (p->chip)
- {
- case (AHC_AIC7770|AHC_EISA): /* None of these adapters have seeproms. */
- if (aic_inb(p, SCSICONF) & TERM_ENB)
- p->flags |= AHC_TERM_ENB_A;
- if ( (p->features & AHC_TWIN) && (aic_inb(p, SCSICONF + 1) & TERM_ENB) )
- p->flags |= AHC_TERM_ENB_B;
- break;
-
- case (AHC_AIC7770|AHC_VL):
- have_seeprom = read_284x_seeprom(p, (struct seeprom_config *) scarray);
- break;
-
- default:
- have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)),
- scarray, p->sc_size, p->sc_type);
- if (!have_seeprom)
- {
- if(p->sc_type == C46)
- have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)),
- scarray, p->sc_size, C56_66);
- else
- have_seeprom = read_seeprom(p, (p->flags & (AHC_CHNLB|AHC_CHNLC)),
- scarray, p->sc_size, C46);
- }
- if (!have_seeprom)
- {
- p->sc_size = 128;
- have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)),
- scarray, p->sc_size, p->sc_type);
- if (!have_seeprom)
- {
- if(p->sc_type == C46)
- have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)),
- scarray, p->sc_size, C56_66);
- else
- have_seeprom = read_seeprom(p, 4*(p->flags & (AHC_CHNLB|AHC_CHNLC)),
- scarray, p->sc_size, C46);
- }
- }
- break;
- }
-
- if (!have_seeprom)
- {
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk("\naic7xxx: No SEEPROM available.\n");
- }
- p->flags |= AHC_NEWEEPROM_FMT;
- if (aic_inb(p, SCSISEQ) == 0)
- {
- p->flags |= AHC_USEDEFAULTS;
- p->flags &= ~AHC_BIOS_ENABLED;
- p->scsi_id = p->scsi_id_b = 7;
- *sxfrctl1 |= STPWEN;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk("aic7xxx: Using default values.\n");
- }
- }
- else if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk("aic7xxx: Using leftover BIOS values.\n");
- }
- if ( ((p->chip & ~AHC_CHIPID_MASK) == AHC_PCI) && (*sxfrctl1 & STPWEN) )
- {
- p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH;
- sc->adapter_control &= ~CFAUTOTERM;
- sc->adapter_control |= CFSTERM | CFWSTERM | CFLVDSTERM;
- }
- if (aic7xxx_extended)
- p->flags |= (AHC_EXTEND_TRANS_A | AHC_EXTEND_TRANS_B);
- else
- p->flags &= ~(AHC_EXTEND_TRANS_A | AHC_EXTEND_TRANS_B);
- }
- else
- {
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk("done\n");
- }
-
- /*
- * Note things in our flags
- */
- p->flags |= AHC_SEEPROM_FOUND;
-
- /*
- * Update the settings in sxfrctl1 to match the termination settings.
- */
- *sxfrctl1 = 0;
-
- /*
- * Get our SCSI ID from the SEEPROM setting...
- */
- p->scsi_id = (sc->brtime_id & CFSCSIID);
-
- /*
- * First process the settings that are different between the VLB
- * and PCI adapter seeproms.
- */
- if ((p->chip & AHC_CHIPID_MASK) == AHC_AIC7770)
- {
- /* VLB adapter seeproms */
- if (sc->bios_control & CF284XEXTEND)
- p->flags |= AHC_EXTEND_TRANS_A;
-
- if (sc->adapter_control & CF284XSTERM)
- {
- *sxfrctl1 |= STPWEN;
- p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH;
- }
- }
- else
- {
- /* PCI adapter seeproms */
- if (sc->bios_control & CFEXTEND)
- p->flags |= AHC_EXTEND_TRANS_A;
- if (sc->bios_control & CFBIOSEN)
- p->flags |= AHC_BIOS_ENABLED;
- else
- p->flags &= ~AHC_BIOS_ENABLED;
-
- if (sc->adapter_control & CFSTERM)
- {
- *sxfrctl1 |= STPWEN;
- p->flags |= AHC_TERM_ENB_SE_LOW | AHC_TERM_ENB_SE_HIGH;
- }
- }
- memcpy(&p->sc, sc, sizeof(struct seeprom_config));
- }
-
- p->discenable = 0;
-
- /*
- * Limit to 16 targets just in case. The 2842 for one is known to
- * blow the max_targets setting, future cards might also.
- */
- max_targets = ((p->features & (AHC_TWIN | AHC_WIDE)) ? 16 : 8);
-
- if (have_seeprom)
- {
- for (i = 0; i < max_targets; i++)
- {
- if( ((p->features & AHC_ULTRA) &&
- !(sc->adapter_control & CFULTRAEN) &&
- (sc->device_flags[i] & CFSYNCHISULTRA)) ||
- (sc->device_flags[i] & CFNEWULTRAFORMAT) )
- {
- p->flags |= AHC_NEWEEPROM_FMT;
- break;
- }
- }
- }
-
- for (i = 0; i < max_targets; i++)
- {
- mask = (0x01 << i);
- if (!have_seeprom)
- {
- if (aic_inb(p, SCSISEQ) != 0)
- {
- /*
- * OK...the BIOS set things up and left behind the settings we need.
- * Just make our sc->device_flags[i] entry match what the card has
- * set for this device.
- */
- p->discenable =
- ~(aic_inb(p, DISC_DSB) | (aic_inb(p, DISC_DSB + 1) << 8) );
- p->ultraenb =
- (aic_inb(p, ULTRA_ENB) | (aic_inb(p, ULTRA_ENB + 1) << 8) );
- sc->device_flags[i] = (p->discenable & mask) ? CFDISC : 0;
- if (aic_inb(p, TARG_SCSIRATE + i) & WIDEXFER)
- sc->device_flags[i] |= CFWIDEB;
- if (p->features & AHC_ULTRA2)
- {
- if (aic_inb(p, TARG_OFFSET + i))
- {
- sc->device_flags[i] |= CFSYNCH;
- sc->device_flags[i] |= (aic_inb(p, TARG_SCSIRATE + i) & 0x07);
- if ( (aic_inb(p, TARG_SCSIRATE + i) & 0x18) == 0x18 )
- sc->device_flags[i] |= CFSYNCHISULTRA;
- }
- }
- else
- {
- if (aic_inb(p, TARG_SCSIRATE + i) & ~WIDEXFER)
- {
- sc->device_flags[i] |= CFSYNCH;
- if (p->features & AHC_ULTRA)
- sc->device_flags[i] |= ((p->ultraenb & mask) ?
- CFSYNCHISULTRA : 0);
- }
- }
- }
- else
- {
- /*
- * Assume the BIOS has NOT been run on this card and nothing between
- * the card and the devices is configured yet.
- */
- sc->device_flags[i] = CFDISC;
- if (p->features & AHC_WIDE)
- sc->device_flags[i] |= CFWIDEB;
- if (p->features & AHC_ULTRA3)
- sc->device_flags[i] |= 2;
- else if (p->features & AHC_ULTRA2)
- sc->device_flags[i] |= 3;
- else if (p->features & AHC_ULTRA)
- sc->device_flags[i] |= CFSYNCHISULTRA;
- sc->device_flags[i] |= CFSYNCH;
- aic_outb(p, 0, TARG_SCSIRATE + i);
- if (p->features & AHC_ULTRA2)
- aic_outb(p, 0, TARG_OFFSET + i);
- }
- }
- if (sc->device_flags[i] & CFDISC)
- {
- p->discenable |= mask;
- }
- if (p->flags & AHC_NEWEEPROM_FMT)
- {
- if ( !(p->features & AHC_ULTRA2) )
- {
- /*
- * I know of two different Ultra BIOSes that do this differently.
- * One on the Gigabyte 6BXU mb that wants flags[i] & CFXFER to
- * be == to 0x03 and SYNCHISULTRA to be true to mean 40MByte/s
- * while on the IBM Netfinity 5000 they want the same thing
- * to be something else, while flags[i] & CFXFER == 0x03 and
- * SYNCHISULTRA false should be 40MByte/s. So, we set both to
- * 40MByte/s and the lower speeds be damned. People will have
- * to select around the conversely mapped lower speeds in order
- * to select lower speeds on these boards.
- */
- if ( (sc->device_flags[i] & CFNEWULTRAFORMAT) &&
- ((sc->device_flags[i] & CFXFER) == 0x03) )
- {
- sc->device_flags[i] &= ~CFXFER;
- sc->device_flags[i] |= CFSYNCHISULTRA;
- }
- if (sc->device_flags[i] & CFSYNCHISULTRA)
- {
- p->ultraenb |= mask;
- }
- }
- else if ( !(sc->device_flags[i] & CFNEWULTRAFORMAT) &&
- (p->features & AHC_ULTRA2) &&
- (sc->device_flags[i] & CFSYNCHISULTRA) )
- {
- p->ultraenb |= mask;
- }
- }
- else if (sc->adapter_control & CFULTRAEN)
- {
- p->ultraenb |= mask;
- }
- if ( (sc->device_flags[i] & CFSYNCH) == 0)
- {
- sc->device_flags[i] &= ~CFXFER;
- p->ultraenb &= ~mask;
- p->transinfo[i].user_offset = 0;
- p->transinfo[i].user_period = 0;
- p->transinfo[i].user_options = 0;
- p->transinfo[i].cur_offset = 0;
- p->transinfo[i].cur_period = 0;
- p->transinfo[i].cur_options = 0;
- p->needsdtr_copy &= ~mask;
- }
- else
- {
- if (p->features & AHC_ULTRA3)
- {
- p->transinfo[i].user_offset = MAX_OFFSET_ULTRA2;
- p->transinfo[i].cur_offset = aic_inb(p, TARG_OFFSET + i);
- if( (sc->device_flags[i] & CFXFER) < 0x03 )
- {
- scsirate = (sc->device_flags[i] & CFXFER);
- p->transinfo[i].user_options = MSG_EXT_PPR_OPTION_DT_CRC;
- if( (aic_inb(p, TARG_SCSIRATE + i) & CFXFER) < 0x03 )
- {
- p->transinfo[i].cur_options =
- ((aic_inb(p, TARG_SCSIRATE + i) & 0x40) ?
- MSG_EXT_PPR_OPTION_DT_CRC : MSG_EXT_PPR_OPTION_DT_UNITS);
- }
- else
- {
- p->transinfo[i].cur_options = 0;
- }
- }
- else
- {
- scsirate = (sc->device_flags[i] & CFXFER) |
- ((p->ultraenb & mask) ? 0x18 : 0x10);
- p->transinfo[i].user_options = 0;
- p->transinfo[i].cur_options = 0;
- }
- p->transinfo[i].user_period = aic7xxx_find_period(p, scsirate,
- AHC_SYNCRATE_ULTRA3);
- p->transinfo[i].cur_period = aic7xxx_find_period(p,
- aic_inb(p, TARG_SCSIRATE + i),
- AHC_SYNCRATE_ULTRA3);
- }
- else if (p->features & AHC_ULTRA2)
- {
- p->transinfo[i].user_offset = MAX_OFFSET_ULTRA2;
- p->transinfo[i].cur_offset = aic_inb(p, TARG_OFFSET + i);
- scsirate = (sc->device_flags[i] & CFXFER) |
- ((p->ultraenb & mask) ? 0x18 : 0x10);
- p->transinfo[i].user_options = 0;
- p->transinfo[i].cur_options = 0;
- p->transinfo[i].user_period = aic7xxx_find_period(p, scsirate,
- AHC_SYNCRATE_ULTRA2);
- p->transinfo[i].cur_period = aic7xxx_find_period(p,
- aic_inb(p, TARG_SCSIRATE + i),
- AHC_SYNCRATE_ULTRA2);
- }
- else
- {
- scsirate = (sc->device_flags[i] & CFXFER) << 4;
- p->transinfo[i].user_options = 0;
- p->transinfo[i].cur_options = 0;
- p->transinfo[i].user_offset = MAX_OFFSET_8BIT;
- if (p->features & AHC_ULTRA)
- {
- short ultraenb;
- ultraenb = aic_inb(p, ULTRA_ENB) |
- (aic_inb(p, ULTRA_ENB + 1) << 8);
- p->transinfo[i].user_period = aic7xxx_find_period(p,
- scsirate,
- (p->ultraenb & mask) ?
- AHC_SYNCRATE_ULTRA :
- AHC_SYNCRATE_FAST);
- p->transinfo[i].cur_period = aic7xxx_find_period(p,
- aic_inb(p, TARG_SCSIRATE + i),
- (ultraenb & mask) ?
- AHC_SYNCRATE_ULTRA :
- AHC_SYNCRATE_FAST);
- }
- else
- p->transinfo[i].user_period = aic7xxx_find_period(p,
- scsirate, AHC_SYNCRATE_FAST);
- }
- p->needsdtr_copy |= mask;
- }
- if ( (sc->device_flags[i] & CFWIDEB) && (p->features & AHC_WIDE) )
- {
- p->transinfo[i].user_width = MSG_EXT_WDTR_BUS_16_BIT;
- p->needwdtr_copy |= mask;
- }
- else
- {
- p->transinfo[i].user_width = MSG_EXT_WDTR_BUS_8_BIT;
- p->needwdtr_copy &= ~mask;
- }
- p->transinfo[i].cur_width =
- (aic_inb(p, TARG_SCSIRATE + i) & WIDEXFER) ?
- MSG_EXT_WDTR_BUS_16_BIT : MSG_EXT_WDTR_BUS_8_BIT;
- }
- aic_outb(p, ~(p->discenable & 0xFF), DISC_DSB);
- aic_outb(p, ~((p->discenable >> 8) & 0xFF), DISC_DSB + 1);
- p->needppr = p->needppr_copy = p->needdv = 0;
- p->needwdtr = p->needwdtr_copy;
- p->needsdtr = p->needsdtr_copy;
- p->dtr_pending = 0;
-
- /*
- * We set the p->ultraenb from the SEEPROM to begin with, but now we make
- * it match what is already down in the card. If we are doing a reset
- * on the card then this will get put back to a default state anyway.
- * This allows us to not have to pre-emptively negotiate when using the
- * no_reset option.
- */
- if (p->features & AHC_ULTRA)
- p->ultraenb = aic_inb(p, ULTRA_ENB) | (aic_inb(p, ULTRA_ENB + 1) << 8);
-
-
- scsi_conf = (p->scsi_id & HSCSIID);
-
- if(have_seeprom)
- {
- p->adapter_control = sc->adapter_control;
- p->bios_control = sc->bios_control;
-
- switch (p->chip & AHC_CHIPID_MASK)
- {
- case AHC_AIC7895:
- case AHC_AIC7896:
- case AHC_AIC7899:
- if (p->adapter_control & CFBPRIMARY)
- p->flags |= AHC_CHANNEL_B_PRIMARY;
- default:
- break;
- }
-
- if (sc->adapter_control & CFSPARITY)
- scsi_conf |= ENSPCHK;
- }
- else
- {
- scsi_conf |= ENSPCHK | RESET_SCSI;
- }
-
- /*
- * Only set the SCSICONF and SCSICONF + 1 registers if we are a PCI card.
- * The 2842 and 2742 cards already have these registers set and we don't
- * want to muck with them since we don't set all the bits they do.
- */
- if ( (p->chip & ~AHC_CHIPID_MASK) == AHC_PCI )
- {
- /* Set the host ID */
- aic_outb(p, scsi_conf, SCSICONF);
- /* In case we are a wide card */
- aic_outb(p, p->scsi_id, SCSICONF + 1);
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_detect
- *
- * Description:
- * Try to detect and register an Adaptec 7770 or 7870 SCSI controller.
- *
- * XXX - This should really be called aic7xxx_probe(). A sequence of
- * probe(), attach()/detach(), and init() makes more sense than
- * one do-it-all function. This may be useful when (and if) the
- * mid-level SCSI code is overhauled.
- *-F*************************************************************************/
-int
-aic7xxx_detect(Scsi_Host_Template *template)
-{
- struct aic7xxx_host *temp_p = NULL;
- struct aic7xxx_host *current_p = NULL;
- struct aic7xxx_host *list_p = NULL;
- int found = 0;
-#if defined(__i386__) || defined(__alpha__)
- ahc_flag_type flags = 0;
- int type;
-#endif
- unsigned char sxfrctl1;
-#if defined(__i386__) || defined(__alpha__)
- unsigned char hcntrl, hostconf;
- unsigned int slot, base;
-#endif
-
-#ifdef MODULE
- /*
- * If we are called as a module, the aic7xxx pointer may not be null
- * and it would point to our bootup string, just like on the lilo
- * command line. IF not NULL, then process this config string with
- * aic7xxx_setup
- */
- if(aic7xxx)
- aic7xxx_setup(aic7xxx);
- if(dummy_buffer[0] != 'P')
- printk(KERN_WARNING "aic7xxx: Please read the file /usr/src/linux/drivers"
- "/scsi/README.aic7xxx\n"
- "aic7xxx: to see the proper way to specify options to the aic7xxx "
- "module\n"
- "aic7xxx: Specifically, don't use any commas when passing arguments to\n"
- "aic7xxx: insmod or else it might trash certain memory areas.\n");
-#endif
-
- template->proc_name = "aic7xxx";
- template->sg_tablesize = AIC7XXX_MAX_SG;
-
-
-#ifdef CONFIG_PCI
- /*
- * PCI-bus probe.
- */
- if (pci_present())
- {
- struct
- {
- unsigned short vendor_id;
- unsigned short device_id;
- ahc_chip chip;
- ahc_flag_type flags;
- ahc_feature features;
- int board_name_index;
- unsigned short seeprom_size;
- unsigned short seeprom_type;
- } const aic_pdevs[] = {
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7810, AHC_NONE,
- AHC_FNONE, AHC_FENONE, 1,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7850, AHC_AIC7850,
- AHC_PAGESCBS, AHC_AIC7850_FE, 5,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7855, AHC_AIC7850,
- AHC_PAGESCBS, AHC_AIC7850_FE, 6,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7821, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7860_FE, 7,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_3860, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7860_FE, 7,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_38602, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7860_FE, 7,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_38602, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7860_FE, 7,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7860, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MOTHERBOARD,
- AHC_AIC7860_FE, 7,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7861, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7860_FE, 8,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7870, AHC_AIC7870,
- AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MOTHERBOARD,
- AHC_AIC7870_FE, 9,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7871, AHC_AIC7870,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7870_FE, 10,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7872, AHC_AIC7870,
- AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7870_FE, 11,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7873, AHC_AIC7870,
- AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7870_FE, 12,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7874, AHC_AIC7870,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7870_FE, 13,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7880, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MOTHERBOARD,
- AHC_AIC7880_FE, 14,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7881, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 15,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7882, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7880_FE, 16,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7883, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7880_FE, 17,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7884, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7885, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7886, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7887, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE | AHC_NEW_AUTOTERM, 19,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7888, AHC_AIC7880,
- AHC_PAGESCBS | AHC_BIOS_ENABLED, AHC_AIC7880_FE, 18,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_7895, AHC_AIC7895,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7895_FE, 20,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7890, AHC_AIC7890,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7890_FE, 21,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7890B, AHC_AIC7890,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7890_FE, 21,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_2930U2, AHC_AIC7890,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7890_FE, 22,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_2940U2, AHC_AIC7890,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7890_FE, 23,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7896, AHC_AIC7896,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7896_FE, 24,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_3940U2, AHC_AIC7896,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7896_FE, 25,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_3950U2D, AHC_AIC7896,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7896_FE, 26,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC, PCI_DEVICE_ID_ADAPTEC_1480A, AHC_AIC7860,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_NO_STPWEN,
- AHC_AIC7860_FE, 27,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892A, AHC_AIC7892,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7892_FE, 28,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892B, AHC_AIC7892,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7892_FE, 28,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892D, AHC_AIC7892,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7892_FE, 28,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7892P, AHC_AIC7892,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED,
- AHC_AIC7892_FE, 28,
- 32, C46 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899A, AHC_AIC7899,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7899_FE, 29,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899B, AHC_AIC7899,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7899_FE, 29,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899D, AHC_AIC7899,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7899_FE, 29,
- 32, C56_66 },
- {PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_7899P, AHC_AIC7899,
- AHC_PAGESCBS | AHC_NEWEEPROM_FMT | AHC_BIOS_ENABLED | AHC_MULTI_CHANNEL,
- AHC_AIC7899_FE, 29,
- 32, C56_66 },
- };
-
- unsigned short command;
- unsigned int devconfig, i, oldverbose;
- struct pci_dev *pdev = NULL;
-
- for (i = 0; i < NUMBER(aic_pdevs); i++)
- {
- pdev = NULL;
- while ((pdev = pci_find_device(aic_pdevs[i].vendor_id,
- aic_pdevs[i].device_id,
- pdev))) {
- if (pci_enable_device(pdev))
- continue;
- if ( i == 0 ) /* We found one, but it's the 7810 RAID cont. */
- {
- if (aic7xxx_verbose & (VERBOSE_PROBE|VERBOSE_PROBE2))
- {
- printk(KERN_INFO "aic7xxx: The 7810 RAID controller is not "
- "supported by\n");
- printk(KERN_INFO " this driver, we are ignoring it.\n");
- }
- }
- else if ( (temp_p = kmalloc(sizeof(struct aic7xxx_host),
- GFP_ATOMIC)) != NULL )
- {
- memset(temp_p, 0, sizeof(struct aic7xxx_host));
- temp_p->chip = aic_pdevs[i].chip | AHC_PCI;
- temp_p->flags = aic_pdevs[i].flags;
- temp_p->features = aic_pdevs[i].features;
- temp_p->board_name_index = aic_pdevs[i].board_name_index;
- temp_p->sc_size = aic_pdevs[i].seeprom_size;
- temp_p->sc_type = aic_pdevs[i].seeprom_type;
-
- /*
- * Read sundry information from PCI BIOS.
- */
- temp_p->irq = pdev->irq;
- temp_p->pdev = pdev;
- temp_p->pci_bus = pdev->bus->number;
- temp_p->pci_device_fn = pdev->devfn;
- temp_p->base = pci_resource_start(pdev, 0);
- temp_p->mbase = pci_resource_start(pdev, 1);
- current_p = list_p;
- while(current_p && temp_p)
- {
- if ( ((current_p->pci_bus == temp_p->pci_bus) &&
- (current_p->pci_device_fn == temp_p->pci_device_fn)) ||
- (temp_p->base && (current_p->base == temp_p->base)) ||
- (temp_p->mbase && (current_p->mbase == temp_p->mbase)) )
- {
- /* duplicate PCI entry, skip it */
- kfree(temp_p);
- temp_p = NULL;
- }
- current_p = current_p->next;
- }
- if ( temp_p == NULL )
- continue;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk("aic7xxx: <%s> at PCI %d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- PCI_SLOT(pdev->devfn),
- PCI_FUNC(pdev->devfn));
- pci_read_config_word(pdev, PCI_COMMAND, &command);
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk("aic7xxx: Initial PCI_COMMAND value was 0x%x\n",
- (int)command);
- }
-#ifdef AIC7XXX_STRICT_PCI_SETUP
- command |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY |
- PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
-#else
- command |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
-#endif
- command &= ~PCI_COMMAND_INVALIDATE;
- if (aic7xxx_pci_parity == 0)
- command &= ~(PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
-#ifdef AIC7XXX_STRICT_PCI_SETUP
- pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk("aic7xxx: Initial DEVCONFIG value was 0x%x\n", devconfig);
- }
- devconfig |= 0x80000040;
- pci_write_config_dword(pdev, DEVCONFIG, devconfig);
-#endif /* AIC7XXX_STRICT_PCI_SETUP */
-
- if(temp_p->base && check_region(temp_p->base, MAXREG - MINREG))
- {
- printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- temp_p->pci_bus,
- PCI_SLOT(temp_p->pci_device_fn),
- PCI_FUNC(temp_p->pci_device_fn));
- printk("aic7xxx: I/O ports already in use, ignoring.\n");
- kfree(temp_p);
- temp_p = NULL;
- continue;
- }
-
- temp_p->unpause = INTEN;
- temp_p->pause = temp_p->unpause | PAUSE;
- if ( ((temp_p->base == 0) &&
- (temp_p->mbase == 0)) ||
- (temp_p->irq == 0) )
- {
- printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- temp_p->pci_bus,
- PCI_SLOT(temp_p->pci_device_fn),
- PCI_FUNC(temp_p->pci_device_fn));
- printk("aic7xxx: Controller disabled by BIOS, ignoring.\n");
- kfree(temp_p);
- temp_p = NULL;
- continue;
- }
-
-#ifdef MMAPIO
- if ( !(temp_p->base) || !(temp_p->flags & AHC_MULTI_CHANNEL) ||
- ((temp_p->chip != (AHC_AIC7870 | AHC_PCI)) &&
- (temp_p->chip != (AHC_AIC7880 | AHC_PCI))) )
- {
- unsigned long page_offset, base;
-
- base = temp_p->mbase & PAGE_MASK;
- page_offset = temp_p->mbase - base;
- temp_p->maddr = ioremap_nocache(base, page_offset + 256);
- if(temp_p->maddr)
- {
- temp_p->maddr += page_offset;
- /*
- * We need to check the I/O with the MMAPed address. Some machines
- * simply fail to work with MMAPed I/O and certain controllers.
- */
- if(aic_inb(temp_p, HCNTRL) == 0xff)
- {
- /*
- * OK.....we failed our test....go back to programmed I/O
- */
- printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- temp_p->pci_bus,
- PCI_SLOT(temp_p->pci_device_fn),
- PCI_FUNC(temp_p->pci_device_fn));
- printk(KERN_INFO "aic7xxx: MMAPed I/O failed, reverting to "
- "Programmed I/O.\n");
- iounmap((void *) (((unsigned long) temp_p->maddr) & PAGE_MASK));
- temp_p->maddr = 0;
- if(temp_p->base == 0)
- {
- printk("aic7xxx: <%s> at PCI %d/%d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- temp_p->pci_bus,
- PCI_SLOT(temp_p->pci_device_fn),
- PCI_FUNC(temp_p->pci_device_fn));
- printk("aic7xxx: Controller disabled by BIOS, ignoring.\n");
- kfree(temp_p);
- temp_p = NULL;
- continue;
- }
- }
- }
- }
-#endif
-
- /*
- * Lock out other contenders for our i/o space.
- */
- if(temp_p->base)
- request_region(temp_p->base, MAXREG - MINREG, "aic7xxx");
-
- /*
- * We HAVE to make sure the first pause_sequencer() and all other
- * subsequent I/O that isn't PCI config space I/O takes place
- * after the MMAPed I/O region is configured and tested. The
- * problem is the PowerPC architecture that doesn't support
- * programmed I/O at all, so we have to have the MMAP I/O set up
- * for this pause to even work on those machines.
- */
- pause_sequencer(temp_p);
-
- /*
- * Clear out any pending PCI error status messages. Also set
- * verbose to 0 so that we don't emit strange PCI error messages
- * while cleaning out the current status bits.
- */
- oldverbose = aic7xxx_verbose;
- aic7xxx_verbose = 0;
- aic7xxx_pci_intr(temp_p);
- aic7xxx_verbose = oldverbose;
-
- temp_p->bios_address = 0;
-
- /*
- * Remember how the card was setup in case there is no seeprom.
- */
- if (temp_p->features & AHC_ULTRA2)
- temp_p->scsi_id = aic_inb(temp_p, SCSIID_ULTRA2) & OID;
- else
- temp_p->scsi_id = aic_inb(temp_p, SCSIID) & OID;
- /*
- * Get current termination setting
- */
- sxfrctl1 = aic_inb(temp_p, SXFRCTL1);
-
- if (aic7xxx_chip_reset(temp_p) == -1)
- {
- release_region(temp_p->base, MAXREG - MINREG);
- kfree(temp_p);
- temp_p = NULL;
- continue;
- }
- /*
- * Very quickly put the term setting back into the register since
- * the chip reset may cause odd things to happen. This is to keep
- * LVD busses with lots of drives from draining the power out of
- * the diffsense line before we get around to running the
- * configure_termination() function. Also restore the STPWLEVEL
- * bit of DEVCONFIG
- */
- aic_outb(temp_p, sxfrctl1, SXFRCTL1);
- pci_write_config_dword(temp_p->pdev, DEVCONFIG, devconfig);
- sxfrctl1 &= STPWEN;
-
- /*
- * We need to set the CHNL? assignments before loading the SEEPROM
- * The 3940 and 3985 cards (original stuff, not any of the later
- * stuff) are 7870 and 7880 class chips. The Ultra2 stuff falls
- * under 7896 and 7897. The 7895 is in a class by itself :)
- */
- switch (temp_p->chip & AHC_CHIPID_MASK)
- {
- case AHC_AIC7870: /* 3840 / 3985 */
- case AHC_AIC7880: /* 3840 UW / 3985 UW */
- if(temp_p->flags & AHC_MULTI_CHANNEL)
- {
- switch(PCI_SLOT(temp_p->pci_device_fn))
- {
- case 5:
- temp_p->flags |= AHC_CHNLB;
- break;
- case 8:
- temp_p->flags |= AHC_CHNLB;
- break;
- case 12:
- temp_p->flags |= AHC_CHNLC;
- break;
- default:
- break;
- }
- }
- break;
-
- case AHC_AIC7895: /* 7895 */
- case AHC_AIC7896: /* 7896/7 */
- case AHC_AIC7899: /* 7899 */
- if (PCI_FUNC(pdev->devfn) != 0)
- {
- temp_p->flags |= AHC_CHNLB;
- }
- /*
- * The 7895 is the only chipset that sets the SCBSIZE32 param
- * in the DEVCONFIG register. The Ultra2 chipsets use
- * the DSCOMMAND0 register instead.
- */
- if ((temp_p->chip & AHC_CHIPID_MASK) == AHC_AIC7895)
- {
- pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
- devconfig |= SCBSIZE32;
- pci_write_config_dword(pdev, DEVCONFIG, devconfig);
- }
- break;
- default:
- break;
- }
-
- /*
- * Loading of the SEEPROM needs to come after we've set the flags
- * to indicate possible CHNLB and CHNLC assigments. Otherwise,
- * on 394x and 398x cards we'll end up reading the wrong settings
- * for channels B and C
- */
- switch (temp_p->chip & AHC_CHIPID_MASK)
- {
- case AHC_AIC7892:
- case AHC_AIC7899:
- aic_outb(temp_p, 0, SCAMCTL);
- /*
- * Switch to the alt mode of the chip...
- */
- aic_outb(temp_p, aic_inb(temp_p, SFUNCT) | ALT_MODE, SFUNCT);
- /*
- * Set our options...the last two items set our CRC after x byte
- * count in target mode...
- */
- aic_outb(temp_p, AUTO_MSGOUT_DE | DIS_MSGIN_DUALEDGE, OPTIONMODE);
- aic_outb(temp_p, 0x00, 0x0b);
- aic_outb(temp_p, 0x10, 0x0a);
- /*
- * switch back to normal mode...
- */
- aic_outb(temp_p, aic_inb(temp_p, SFUNCT) & ~ALT_MODE, SFUNCT);
- aic_outb(temp_p, CRCVALCHKEN | CRCENDCHKEN | CRCREQCHKEN |
- TARGCRCENDEN | TARGCRCCNTEN,
- CRCCONTROL1);
- aic_outb(temp_p, ((aic_inb(temp_p, DSCOMMAND0) | USCBSIZE32 |
- MPARCKEN | CIOPARCKEN | CACHETHEN) &
- ~DPARCKEN), DSCOMMAND0);
- aic7xxx_load_seeprom(temp_p, &sxfrctl1);
- break;
- case AHC_AIC7890:
- case AHC_AIC7896:
- aic_outb(temp_p, 0, SCAMCTL);
- aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) |
- CACHETHEN | MPARCKEN | USCBSIZE32 |
- CIOPARCKEN) & ~DPARCKEN, DSCOMMAND0);
- aic7xxx_load_seeprom(temp_p, &sxfrctl1);
- break;
- case AHC_AIC7850:
- case AHC_AIC7860:
- /*
- * Set the DSCOMMAND0 register on these cards different from
- * on the 789x cards. Also, read the SEEPROM as well.
- */
- aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) |
- CACHETHEN | MPARCKEN) & ~DPARCKEN,
- DSCOMMAND0);
- /* FALLTHROUGH */
- default:
- aic7xxx_load_seeprom(temp_p, &sxfrctl1);
- break;
- case AHC_AIC7880:
- /*
- * Check the rev of the chipset before we change DSCOMMAND0
- */
- pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
- if ((devconfig & 0xff) >= 1)
- {
- aic_outb(temp_p, (aic_inb(temp_p, DSCOMMAND0) |
- CACHETHEN | MPARCKEN) & ~DPARCKEN,
- DSCOMMAND0);
- }
- aic7xxx_load_seeprom(temp_p, &sxfrctl1);
- break;
- }
-
-
- /*
- * and then we need another switch based on the type in order to
- * make sure the channel B primary flag is set properly on 7895
- * controllers....Arrrgggghhh!!! We also have to catch the fact
- * that when you disable the BIOS on the 7895 on the Intel DK440LX
- * motherboard, and possibly others, it only sets the BIOS disabled
- * bit on the A channel...I think I'm starting to lean towards
- * going postal....
- */
- switch(temp_p->chip & AHC_CHIPID_MASK)
- {
- case AHC_AIC7895:
- case AHC_AIC7896:
- case AHC_AIC7899:
- current_p = list_p;
- while(current_p != NULL)
- {
- if ( (current_p->pci_bus == temp_p->pci_bus) &&
- (PCI_SLOT(current_p->pci_device_fn) ==
- PCI_SLOT(temp_p->pci_device_fn)) )
- {
- if ( PCI_FUNC(current_p->pci_device_fn) == 0 )
- {
- temp_p->flags |=
- (current_p->flags & AHC_CHANNEL_B_PRIMARY);
- temp_p->flags &= ~(AHC_BIOS_ENABLED|AHC_USEDEFAULTS);
- temp_p->flags |=
- (current_p->flags & (AHC_BIOS_ENABLED|AHC_USEDEFAULTS));
- }
- else
- {
- current_p->flags |=
- (temp_p->flags & AHC_CHANNEL_B_PRIMARY);
- current_p->flags &= ~(AHC_BIOS_ENABLED|AHC_USEDEFAULTS);
- current_p->flags |=
- (temp_p->flags & (AHC_BIOS_ENABLED|AHC_USEDEFAULTS));
- }
- }
- current_p = current_p->next;
- }
- break;
- default:
- break;
- }
-
- /*
- * We only support external SCB RAM on the 7895/6/7 chipsets.
- * We could support it on the 7890/1 easy enough, but I don't
- * know of any 7890/1 based cards that have it. I do know
- * of 7895/6/7 cards that have it and they work properly.
- */
- switch(temp_p->chip & AHC_CHIPID_MASK)
- {
- default:
- break;
- case AHC_AIC7895:
- case AHC_AIC7896:
- case AHC_AIC7899:
- pci_read_config_dword(pdev, DEVCONFIG, &devconfig);
- if (temp_p->features & AHC_ULTRA2)
- {
- if ( (aic_inb(temp_p, DSCOMMAND0) & RAMPSM_ULTRA2) &&
- (aic7xxx_scbram) )
- {
- aic_outb(temp_p,
- aic_inb(temp_p, DSCOMMAND0) & ~SCBRAMSEL_ULTRA2,
- DSCOMMAND0);
- temp_p->flags |= AHC_EXTERNAL_SRAM;
- devconfig |= EXTSCBPEN;
- }
- else if (aic_inb(temp_p, DSCOMMAND0) & RAMPSM_ULTRA2)
- {
- printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- temp_p->pci_bus,
- PCI_SLOT(temp_p->pci_device_fn),
- PCI_FUNC(temp_p->pci_device_fn));
- printk("aic7xxx: external SCB RAM detected, "
- "but not enabled\n");
- }
- }
- else
- {
- if ((devconfig & RAMPSM) && (aic7xxx_scbram))
- {
- devconfig &= ~SCBRAMSEL;
- devconfig |= EXTSCBPEN;
- temp_p->flags |= AHC_EXTERNAL_SRAM;
- }
- else if (devconfig & RAMPSM)
- {
- printk(KERN_INFO "aic7xxx: <%s> at PCI %d/%d/%d\n",
- board_names[aic_pdevs[i].board_name_index],
- temp_p->pci_bus,
- PCI_SLOT(temp_p->pci_device_fn),
- PCI_FUNC(temp_p->pci_device_fn));
- printk("aic7xxx: external SCB RAM detected, "
- "but not enabled\n");
- }
- }
- pci_write_config_dword(pdev, DEVCONFIG, devconfig);
- if ( (temp_p->flags & AHC_EXTERNAL_SRAM) &&
- (temp_p->flags & AHC_CHNLB) )
- aic_outb(temp_p, 1, CCSCBBADDR);
- break;
- }
-
- /*
- * Take the LED out of diagnostic mode
- */
- aic_outb(temp_p,
- (aic_inb(temp_p, SBLKCTL) & ~(DIAGLEDEN | DIAGLEDON)),
- SBLKCTL);
-
- /*
- * We don't know where this is set in the SEEPROM or by the
- * BIOS, so we default to 100%. On Ultra2 controllers, use 75%
- * instead.
- */
- if (temp_p->features & AHC_ULTRA2)
- {
- aic_outb(temp_p, RD_DFTHRSH_MAX | WR_DFTHRSH_MAX, DFF_THRSH);
- }
- else
- {
- aic_outb(temp_p, DFTHRSH_100, DSPCISTATUS);
- }
-
- if ( list_p == NULL )
- {
- list_p = current_p = temp_p;
- }
- else
- {
- current_p = list_p;
- while(current_p->next != NULL)
- current_p = current_p->next;
- current_p->next = temp_p;
- }
- temp_p->next = NULL;
- found++;
- } /* Found an Adaptec PCI device. */
- else /* Well, we found one, but we couldn't get any memory */
- {
- printk("aic7xxx: Found <%s>\n",
- board_names[aic_pdevs[i].board_name_index]);
- printk(KERN_INFO "aic7xxx: Unable to allocate device memory, "
- "skipping.\n");
- }
- } /* while(pdev=....) */
- } /* for PCI_DEVICES */
- } /* PCI BIOS present */
-#endif CONFIG_PCI
-
-#if defined(__i386__) || defined(__alpha__)
- /*
- * EISA/VL-bus card signature probe.
- */
- slot = MINSLOT;
- while ( (slot <= MAXSLOT) &&
- !(aic7xxx_no_probe) )
- {
- base = SLOTBASE(slot) + MINREG;
-
- if (check_region(base, MAXREG - MINREG))
- {
- /*
- * Some other driver has staked a
- * claim to this i/o region already.
- */
- slot++;
- continue; /* back to the beginning of the for loop */
- }
- flags = 0;
- type = aic7xxx_probe(slot, base + AHC_HID0, &flags);
- if (type == -1)
- {
- slot++;
- continue;
- }
- temp_p = kmalloc(sizeof(struct aic7xxx_host), GFP_ATOMIC);
- if (temp_p == NULL)
- {
- printk(KERN_WARNING "aic7xxx: Unable to allocate device space.\n");
- slot++;
- continue; /* back to the beginning of the while loop */
- }
- /*
- * Lock out other contenders for our i/o space.
- */
- request_region(base, MAXREG - MINREG, "aic7xxx");
-
- /*
- * Pause the card preserving the IRQ type. Allow the operator
- * to override the IRQ trigger.
- */
- if (aic7xxx_irq_trigger == 1)
- hcntrl = IRQMS; /* Level */
- else if (aic7xxx_irq_trigger == 0)
- hcntrl = 0; /* Edge */
- else
- hcntrl = inb(base + HCNTRL) & IRQMS; /* Default */
- memset(temp_p, 0, sizeof(struct aic7xxx_host));
- temp_p->unpause = hcntrl | INTEN;
- temp_p->pause = hcntrl | PAUSE | INTEN;
- temp_p->base = base;
- temp_p->mbase = 0;
- temp_p->maddr = 0;
- temp_p->pci_bus = 0;
- temp_p->pci_device_fn = slot;
- aic_outb(temp_p, hcntrl | PAUSE, HCNTRL);
- while( (aic_inb(temp_p, HCNTRL) & PAUSE) == 0 ) ;
- if (aic7xxx_chip_reset(temp_p) == -1)
- temp_p->irq = 0;
- else
- temp_p->irq = aic_inb(temp_p, INTDEF) & 0x0F;
- temp_p->flags |= AHC_PAGESCBS;
-
- switch (temp_p->irq)
- {
- case 9:
- case 10:
- case 11:
- case 12:
- case 14:
- case 15:
- break;
-
- default:
- printk(KERN_WARNING "aic7xxx: Host adapter uses unsupported IRQ "
- "level %d, ignoring.\n", temp_p->irq);
- kfree(temp_p);
- release_region(base, MAXREG - MINREG);
- slot++;
- continue; /* back to the beginning of the while loop */
- }
-
- /*
- * We are commited now, everything has been checked and this card
- * has been found, now we just set it up
- */
-
- /*
- * Insert our new struct into the list at the end
- */
- if (list_p == NULL)
- {
- list_p = current_p = temp_p;
- }
- else
- {
- current_p = list_p;
- while (current_p->next != NULL)
- current_p = current_p->next;
- current_p->next = temp_p;
- }
-
- switch (type)
- {
- case 0:
- temp_p->board_name_index = 2;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk("aic7xxx: <%s> at EISA %d\n",
- board_names[2], slot);
- /* FALLTHROUGH */
- case 1:
- {
- temp_p->chip = AHC_AIC7770 | AHC_EISA;
- temp_p->features |= AHC_AIC7770_FE;
- temp_p->bios_control = aic_inb(temp_p, HA_274_BIOSCTRL);
-
- /*
- * Get the primary channel information. Right now we don't
- * do anything with this, but someday we will be able to inform
- * the mid-level SCSI code which channel is primary.
- */
- if (temp_p->board_name_index == 0)
- {
- temp_p->board_name_index = 3;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk("aic7xxx: <%s> at EISA %d\n",
- board_names[3], slot);
- }
- if (temp_p->bios_control & CHANNEL_B_PRIMARY)
- {
- temp_p->flags |= AHC_CHANNEL_B_PRIMARY;
- }
-
- if ((temp_p->bios_control & BIOSMODE) == BIOSDISABLED)
- {
- temp_p->flags &= ~AHC_BIOS_ENABLED;
- }
- else
- {
- temp_p->flags &= ~AHC_USEDEFAULTS;
- temp_p->flags |= AHC_BIOS_ENABLED;
- if ( (temp_p->bios_control & 0x20) == 0 )
- {
- temp_p->bios_address = 0xcc000;
- temp_p->bios_address += (0x4000 * (temp_p->bios_control & 0x07));
- }
- else
- {
- temp_p->bios_address = 0xd0000;
- temp_p->bios_address += (0x8000 * (temp_p->bios_control & 0x06));
- }
- }
- temp_p->adapter_control = aic_inb(temp_p, SCSICONF) << 8;
- temp_p->adapter_control |= aic_inb(temp_p, SCSICONF + 1);
- if (temp_p->features & AHC_WIDE)
- {
- temp_p->scsi_id = temp_p->adapter_control & HWSCSIID;
- temp_p->scsi_id_b = temp_p->scsi_id;
- }
- else
- {
- temp_p->scsi_id = (temp_p->adapter_control >> 8) & HSCSIID;
- temp_p->scsi_id_b = temp_p->adapter_control & HSCSIID;
- }
- aic7xxx_load_seeprom(temp_p, &sxfrctl1);
- break;
- }
-
- case 2:
- case 3:
- temp_p->chip = AHC_AIC7770 | AHC_VL;
- temp_p->features |= AHC_AIC7770_FE;
- if (type == 2)
- temp_p->flags |= AHC_BIOS_ENABLED;
- else
- temp_p->flags &= ~AHC_BIOS_ENABLED;
- if (aic_inb(temp_p, SCSICONF) & TERM_ENB)
- sxfrctl1 = STPWEN;
- aic7xxx_load_seeprom(temp_p, &sxfrctl1);
- temp_p->board_name_index = 4;
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk("aic7xxx: <%s> at VLB %d\n",
- board_names[2], slot);
- switch( aic_inb(temp_p, STATUS_2840) & BIOS_SEL )
- {
- case 0x00:
- temp_p->bios_address = 0xe0000;
- break;
- case 0x20:
- temp_p->bios_address = 0xc8000;
- break;
- case 0x40:
- temp_p->bios_address = 0xd0000;
- break;
- case 0x60:
- temp_p->bios_address = 0xd8000;
- break;
- default:
- break; /* can't get here */
- }
- break;
-
- default: /* Won't get here. */
- break;
- }
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- {
- printk(KERN_INFO "aic7xxx: BIOS %sabled, IO Port 0x%lx, IRQ %d (%s)\n",
- (temp_p->flags & AHC_USEDEFAULTS) ? "dis" : "en", temp_p->base,
- temp_p->irq,
- (temp_p->pause & IRQMS) ? "level sensitive" : "edge triggered");
- printk(KERN_INFO "aic7xxx: Extended translation %sabled.\n",
- (temp_p->flags & AHC_EXTEND_TRANS_A) ? "en" : "dis");
- }
-
- /*
- * Set the FIFO threshold and the bus off time.
- */
- hostconf = aic_inb(temp_p, HOSTCONF);
- aic_outb(temp_p, hostconf & DFTHRSH, BUSSPD);
- aic_outb(temp_p, (hostconf << 2) & BOFF, BUSTIME);
- slot++;
- found++;
- }
-
-#endif /* defined(__i386__) || defined(__alpha__) */
-
- /*
- * Now, we re-order the probed devices by BIOS address and BUS class.
- * In general, we follow this algorithm to make the adapters show up
- * in the same order under linux that the computer finds them.
- * 1: All VLB/EISA cards with BIOS_ENABLED first, according to BIOS
- * address, going from lowest to highest.
- * 2: All PCI controllers with BIOS_ENABLED next, according to BIOS
- * address, going from lowest to highest.
- * 3: Remaining VLB/EISA controllers going in slot order.
- * 4: Remaining PCI controllers, going in PCI device order (reversable)
- */
-
- {
- struct aic7xxx_host *sort_list[4] = { NULL, NULL, NULL, NULL };
- struct aic7xxx_host *vlb, *pci;
- struct aic7xxx_host *prev_p;
- struct aic7xxx_host *p;
- unsigned char left;
-
- prev_p = vlb = pci = NULL;
-
- temp_p = list_p;
- while (temp_p != NULL)
- {
- switch(temp_p->chip & ~AHC_CHIPID_MASK)
- {
- case AHC_EISA:
- case AHC_VL:
- {
- p = temp_p;
- if (p->flags & AHC_BIOS_ENABLED)
- vlb = sort_list[0];
- else
- vlb = sort_list[2];
-
- if (vlb == NULL)
- {
- vlb = temp_p;
- temp_p = temp_p->next;
- vlb->next = NULL;
- }
- else
- {
- current_p = vlb;
- prev_p = NULL;
- while ( (current_p != NULL) &&
- (current_p->bios_address < temp_p->bios_address))
- {
- prev_p = current_p;
- current_p = current_p->next;
- }
- if (prev_p != NULL)
- {
- prev_p->next = temp_p;
- temp_p = temp_p->next;
- prev_p->next->next = current_p;
- }
- else
- {
- vlb = temp_p;
- temp_p = temp_p->next;
- vlb->next = current_p;
- }
- }
-
- if (p->flags & AHC_BIOS_ENABLED)
- sort_list[0] = vlb;
- else
- sort_list[2] = vlb;
-
- break;
- }
- default: /* All PCI controllers fall through to default */
- {
-
- p = temp_p;
- if (p->flags & AHC_BIOS_ENABLED)
- pci = sort_list[1];
- else
- pci = sort_list[3];
-
- if (pci == NULL)
- {
- pci = temp_p;
- temp_p = temp_p->next;
- pci->next = NULL;
- }
- else
- {
- current_p = pci;
- prev_p = NULL;
- if (!aic7xxx_reverse_scan)
- {
- while ( (current_p != NULL) &&
- ( (PCI_SLOT(current_p->pci_device_fn) |
- (current_p->pci_bus << 8)) <
- (PCI_SLOT(temp_p->pci_device_fn) |
- (temp_p->pci_bus << 8)) ) )
- {
- prev_p = current_p;
- current_p = current_p->next;
- }
- }
- else
- {
- while ( (current_p != NULL) &&
- ( (PCI_SLOT(current_p->pci_device_fn) |
- (current_p->pci_bus << 8)) >
- (PCI_SLOT(temp_p->pci_device_fn) |
- (temp_p->pci_bus << 8)) ) )
- {
- prev_p = current_p;
- current_p = current_p->next;
- }
- }
- /*
- * Are we dealing with a 7895/6/7/9 where we need to sort the
- * channels as well, if so, the bios_address values should
- * be the same
- */
- if ( (current_p) && (temp_p->flags & AHC_MULTI_CHANNEL) &&
- (temp_p->pci_bus == current_p->pci_bus) &&
- (PCI_SLOT(temp_p->pci_device_fn) ==
- PCI_SLOT(current_p->pci_device_fn)) )
- {
- if (temp_p->flags & AHC_CHNLB)
- {
- if ( !(temp_p->flags & AHC_CHANNEL_B_PRIMARY) )
- {
- prev_p = current_p;
- current_p = current_p->next;
- }
- }
- else
- {
- if (temp_p->flags & AHC_CHANNEL_B_PRIMARY)
- {
- prev_p = current_p;
- current_p = current_p->next;
- }
- }
- }
- if (prev_p != NULL)
- {
- prev_p->next = temp_p;
- temp_p = temp_p->next;
- prev_p->next->next = current_p;
- }
- else
- {
- pci = temp_p;
- temp_p = temp_p->next;
- pci->next = current_p;
- }
- }
-
- if (p->flags & AHC_BIOS_ENABLED)
- sort_list[1] = pci;
- else
- sort_list[3] = pci;
-
- break;
- }
- } /* End of switch(temp_p->type) */
- } /* End of while (temp_p != NULL) */
- /*
- * At this point, the cards have been broken into 4 sorted lists, now
- * we run through the lists in order and register each controller
- */
- {
- int i;
-
- left = found;
- for (i=0; i<NUMBER(sort_list); i++)
- {
- temp_p = sort_list[i];
- while(temp_p != NULL)
- {
- template->name = board_names[temp_p->board_name_index];
- p = aic7xxx_alloc(template, temp_p);
- if (p != NULL)
- {
- p->instance = found - left;
- if (aic7xxx_register(template, p, (--left)) == 0)
- {
- found--;
- aic7xxx_release(p->host);
- scsi_unregister(p->host);
- }
- else if (aic7xxx_dump_card)
- {
- pause_sequencer(p);
- aic7xxx_print_card(p);
- aic7xxx_print_scratch_ram(p);
- unpause_sequencer(p, TRUE);
- }
- }
- current_p = temp_p;
- temp_p = (struct aic7xxx_host *)temp_p->next;
- kfree(current_p);
- }
- }
- }
- }
- return (found);
-}
-
-static void aic7xxx_build_negotiation_cmnd(struct aic7xxx_host *p,
- Scsi_Cmnd *old_cmd, int tindex);
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_allocate_negotiation_command
- *
- * Description:
- * allocate the actual command struct and fill in the gaps...
- *-F*************************************************************************/
-static Scsi_Cmnd *
-aic7xxx_allocate_negotiation_command(struct aic7xxx_host *p,
- Scsi_Cmnd *old_cmd, int tindex)
-{
- Scsi_Cmnd *cmd;
- char *buffer;
-
- if (!(p->dev_dtr_cmnd[tindex] = kmalloc(sizeof(Scsi_Cmnd), GFP_ATOMIC)) )
- {
- return(NULL);
- }
- if (!(buffer = kmalloc(256, GFP_ATOMIC)))
- {
- kfree(p->dev_dtr_cmnd[tindex]);
- p->dev_dtr_cmnd[tindex] = NULL;
- return(NULL);
- }
- cmd = p->dev_dtr_cmnd[tindex];
- memset(cmd, 0, sizeof(Scsi_Cmnd));
- memcpy(cmd, old_cmd, sizeof(Scsi_Cmnd));
- memset(&cmd->cmnd[0], 0, sizeof(cmd->cmnd));
- memset(&cmd->data_cmnd[0], 0, sizeof(cmd->data_cmnd));
- cmd->lun = 0;
- cmd->request_bufflen = 255;
- cmd->request_buffer = buffer;
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->use_sg = cmd->old_use_sg = cmd->sglist_len = 0;
- cmd->bufflen = 0;
- cmd->buffer = NULL;
- cmd->underflow = 0;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = cmd->data_cmnd[0] = INQUIRY;
- cmd->cmnd[1] = cmd->data_cmnd[1] = 0;
- cmd->cmnd[2] = cmd->data_cmnd[2] = 0;
- cmd->cmnd[3] = cmd->data_cmnd[3] = 0;
- cmd->cmnd[4] = cmd->data_cmnd[4] = 255; /* match what scsi.c does here */
- cmd->cmnd[5] = cmd->data_cmnd[5] = 0;
- return(cmd);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_negotiation_complete
- *
- * Description:
- * Handle completion events for our Negotiation commands. Clear out the
- * struct and get it ready for its next use.
- *-F*************************************************************************/
-static void
-aic7xxx_negotiation_complete(Scsi_Cmnd *cmd)
-{
- unsigned int checksum;
- int i;
- int *ibuffer;
- struct aic7xxx_host *p = (struct aic7xxx_host *)cmd->host->hostdata;
- int tindex = TARGET_INDEX(cmd);
- struct aic7xxx_syncrate *syncrate;
-
- /*
- * perform our minimalistic domain validation
- */
- if(p->dev_flags[tindex] & DEVICE_SCANNED)
- {
- ibuffer = (int *)cmd->request_buffer;
- checksum = 0;
- for(i = 0; i < (cmd->request_bufflen >> 2); i++)
- {
- checksum += ibuffer[i];
- }
- if( (checksum != p->dev_checksum[tindex]) &&
- (p->transinfo[tindex].cur_offset != 0) )
- {
- unsigned int period = p->transinfo[tindex].cur_period;
- unsigned char options = p->transinfo[tindex].cur_options;
-
- if (p->needdv & (1<<tindex))
- {
- /*
- * oops, we had a failure, lower the transfer rate and try again. It's
- * worth noting here that it might be wise to also check for typical
- * wide setting on narrow cable type problems and try disabling wide
- * instead of slowing down if those exist. That's hard to do with simple
- * checksums though.
- */
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "reducing SCSI transfer speed due to Domain "
- "validation failure.\n", p->host_no, CTL_OF_CMD(cmd));
- }
- if((syncrate = aic7xxx_find_syncrate(p, &period, 0, &options)) != NULL)
- {
- syncrate++;
- if( (syncrate->rate[0] != NULL) &&
- (!(p->features & AHC_ULTRA2) || (syncrate->sxfr_ultra2 == 0)) )
- {
- p->transinfo[tindex].goal_period = syncrate->period;
- if( p->transinfo[tindex].goal_period > 9 )
- {
- p->transinfo[tindex].goal_options = 0;
- p->needppr &= ~(1<<tindex);
- p->needsdtr |= (1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr_copy |= (1<<tindex);
- if (p->transinfo[tindex].goal_width)
- {
- p->needwdtr |= (1<<tindex);
- p->needwdtr_copy |= (1<<tindex);
- }
- }
- }
- else if (p->transinfo[tindex].goal_width)
- {
- p->transinfo[tindex].goal_width = 0;
- p->needwdtr &= ~(1<<tindex);
- p->needwdtr_copy &= ~(1<<tindex);
- p->transinfo[tindex].goal_offset =
- p->transinfo[tindex].user_offset;
- p->transinfo[tindex].goal_period =
- p->transinfo[tindex].user_period;
- p->transinfo[tindex].goal_options =
- p->transinfo[tindex].user_options;
- if( p->transinfo[tindex].goal_period <= 9 )
- {
- p->needppr |= (1<<tindex);
- p->needsdtr &= ~(1<<tindex);
- p->needppr_copy |= (1<<tindex);
- p->needsdtr_copy &= ~(1<<tindex);
- }
- else
- {
- p->needppr &= ~(1<<tindex);
- p->needsdtr |= (1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr_copy |= (1<<tindex);
- }
- }
- else
- {
- p->transinfo[tindex].goal_offset = 0;
- p->transinfo[tindex].goal_period = 255;
- p->transinfo[tindex].goal_options = 0;
- p->transinfo[tindex].goal_width = 0;
- p->needppr &= ~(1<<tindex);
- p->needsdtr &= ~(1<<tindex);
- p->needwdtr &= ~(1<<tindex);
- p->needppr_copy &= ~(1<<tindex);
- p->needsdtr_copy &= ~(1<<tindex);
- p->needwdtr_copy &= ~(1<<tindex);
- }
- }
- p->needdv &= ~(1<<tindex);
- }
- else
- {
- if(aic7xxx_verbose & VERBOSE_NEGOTIATION2)
- {
- printk(INFO_LEAD "Performing Domain validation.\n",
- p->host_no, CTL_OF_CMD(cmd));
- }
- /*
- * Update the checksum in case the INQUIRY data has changed, maybe
- * in relation to a change in the mode pages, or whatever.
- */
- p->dev_checksum[tindex] = checksum;
- /*
- * Signal that we are trying out the domain validation
- */
- p->needdv |= (1<<tindex);
- /*
- * Signal that we need to re-negotiate things, this also gets us our
- * INQUIRY command to re-checksum off of.
- */
- p->needppr |= (p->needppr_copy & (1<<tindex));
- p->needsdtr |= (p->needsdtr_copy & (1<<tindex));
- p->needwdtr |= (p->needwdtr_copy & (1<<tindex));
- }
- }
- else
- {
- if( (aic7xxx_verbose & VERBOSE_NEGOTIATION2) &&
- (p->needdv & (1<<tindex)) )
- {
- printk(INFO_LEAD "Successfully completed Domain validation.\n",
- p->host_no, CTL_OF_CMD(cmd));
- }
- /*
- * We successfully did our checksum, so don't leave the needdv flag set
- * in case we might have set it last time through.
- */
- p->needdv &= ~(1<<tindex);
- }
- }
-
- p->dtr_pending &= ~(0x01 << tindex);
- /*
- * This looks recursive in the extreme, but if this was a WDTR negotiation
- * and we didn't follow up with SDTR yet, then this will get it started.
- * For all other cases, this should work out to be a no-op, unless we are
- * doing domain validation and happen to need a new negotiation command.
- *
- * In case we don't want this to go any further, the cmdcmplt interrupt
- * handler will NULL out the cmd->next entry so that the real SCSI command
- * can be sent back to the mid layer code with SENSE data intact. We'll
- * finish things up when the cmd gets sent back down to us, so no worries.
- */
- if(cmd->next)
- {
- aic7xxx_build_negotiation_cmnd(p, cmd->next, tindex);
- }
- return;
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_build_negotiation_command
- *
- * Description:
- * Build a Scsi_Cmnd structure to perform negotiation with or else send
- * a pre-built command specifically for this purpose.
- *-F*************************************************************************/
-static void
-aic7xxx_build_negotiation_cmnd(struct aic7xxx_host *p, Scsi_Cmnd *old_cmd,
- int tindex)
-{
-
- if ( !(p->dtr_pending & (1<<tindex)) &&
- ( (p->needppr & (1<<tindex)) ||
- (p->needwdtr & (1<<tindex)) ||
- (p->needsdtr & (1<<tindex)) ) )
- {
- if ( (p->dev_dtr_cmnd[tindex] == NULL) &&
- (aic7xxx_allocate_negotiation_command(p, old_cmd, tindex) == NULL) )
- {
- return;
- }
- /*
- * Before sending this thing out, we also make the cmd->next pointer
- * point to the real command so we can stuff any possible SENSE data
- * into the real command instead of this fake command. This has to be
- * done each time the command is built, not just the first time, hence
- * it's outside of the above if()...
- */
- p->dev_dtr_cmnd[tindex]->next = old_cmd;
- /*
- * Clear the buffer so checksums come out right....
- */
- memset(p->dev_dtr_cmnd[tindex]->request_buffer, 0,
- p->dev_dtr_cmnd[tindex]->request_bufflen);
- /*
- * Remove any commands for this particular device that might be on the
- * waiting_scbs queue or qinfifo so that this command goes out first.
- * This is vital for our implementation of domain validation.
- */
- pause_sequencer(p);
- aic7xxx_search_qinfifo(p, old_cmd->target, old_cmd->channel, ALL_LUNS,
- SCB_LIST_NULL, 0, TRUE, &p->delayed_scbs[tindex]);
- unpause_sequencer(p, FALSE);
- {
- struct aic7xxx_scb *scb, *next;
-
- scb = p->waiting_scbs.head;
- while(scb != NULL)
- {
- if( aic7xxx_match_scb(p, scb, old_cmd->target, old_cmd->channel,
- ALL_LUNS, SCB_LIST_NULL) )
- {
- next = scb->q_next;
- scbq_remove(&p->waiting_scbs, scb);
- scbq_insert_tail(&p->delayed_scbs[tindex], scb);
- scb = next;
- }
- else
- {
- scb = scb->q_next;
- }
- }
- }
- aic7xxx_queue(p->dev_dtr_cmnd[tindex],
- aic7xxx_negotiation_complete);
- }
-}
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
-/*+F*************************************************************************
- * Function:
- * aic7xxx_print_scb
- *
- * Description:
- * Dump the byte codes for an about to be sent SCB.
- *-F*************************************************************************/
-static void
-aic7xxx_print_scb(struct aic7xxx_host *p, struct aic7xxx_scb *scb)
-{
- int i;
- unsigned char *x;
-
- x = (unsigned char *)&scb->hscb->control;
-
- for(i=0; i<32; i++)
- {
- printk("%02x ", x[i]);
- }
- printk("\n");
-}
-#endif
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_buildscb
- *
- * Description:
- * Build a SCB.
- *-F*************************************************************************/
-static void
-aic7xxx_buildscb(struct aic7xxx_host *p, Scsi_Cmnd *cmd,
- struct aic7xxx_scb *scb)
-{
- unsigned short mask;
- struct aic7xxx_hwscb *hscb;
- unsigned char tindex = TARGET_INDEX(cmd);
-
- mask = (0x01 << tindex);
- hscb = scb->hscb;
-
- /*
- * Setup the control byte if we need negotiation and have not
- * already requested it.
- */
- hscb->control = 0;
- scb->tag_action = 0;
- cmd->tag = hscb->tag;
- if (p->discenable & mask)
- {
- hscb->control |= DISCENB;
- if ( (p->tagenable & mask) &&
- (cmd->cmnd[0] != TEST_UNIT_READY) )
- {
- p->dev_commands_sent[tindex]++;
- if (p->dev_commands_sent[tindex] < 200)
- {
- hscb->control |= MSG_SIMPLE_Q_TAG;
- scb->tag_action = MSG_SIMPLE_Q_TAG;
- }
- else
- {
- if (p->orderedtag & mask)
- {
- hscb->control |= MSG_ORDERED_Q_TAG;
- scb->tag_action = MSG_ORDERED_Q_TAG;
- }
- else
- {
- hscb->control |= MSG_SIMPLE_Q_TAG;
- scb->tag_action = MSG_SIMPLE_Q_TAG;
- }
- p->dev_commands_sent[tindex] = 0;
- }
- }
- }
- if ( cmd == p->dev_dtr_cmnd[tindex] )
- {
- p->dtr_pending |= mask;
- scb->tag_action = 0;
- if (p->dev_flags[tindex] & DEVICE_SCANNED)
- {
- hscb->control &= DISCENB;
- hscb->control |= MK_MESSAGE;
- if(p->needppr & mask)
- {
- scb->flags |= SCB_MSGOUT_PPR;
- }
- else if(p->needwdtr & mask)
- {
- scb->flags |= SCB_MSGOUT_WDTR;
- }
- else if(p->needsdtr & mask)
- {
- scb->flags |= SCB_MSGOUT_SDTR;
- }
- }
- }
- if ( !(p->dtr_pending & mask) &&
- ( (p->needppr & mask) ||
- (p->needwdtr & mask) ||
- (p->needsdtr & mask) ) )
- {
- aic7xxx_build_negotiation_cmnd(p, cmd, tindex);
- }
- hscb->target_channel_lun = ((cmd->target << 4) & 0xF0) |
- ((cmd->channel & 0x01) << 3) | (cmd->lun & 0x07);
-
- /*
- * The interpretation of request_buffer and request_bufflen
- * changes depending on whether or not use_sg is zero; a
- * non-zero use_sg indicates the number of elements in the
- * scatter-gather array.
- */
-
- /*
- * XXX - this relies on the host data being stored in a
- * little-endian format.
- */
- hscb->SCSI_cmd_length = cmd->cmd_len;
- memcpy(scb->cmnd, cmd->cmnd, cmd->cmd_len);
- hscb->SCSI_cmd_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, scb->cmnd));
-
- if (cmd->use_sg)
- {
- struct scatterlist *sg; /* Must be mid-level SCSI code scatterlist */
-
- /*
- * We must build an SG list in adapter format, as the kernel's SG list
- * cannot be used directly because of data field size (__alpha__)
- * differences and the kernel SG list uses virtual addresses where
- * we need physical addresses.
- */
- int i, use_sg;
-
- sg = (struct scatterlist *)cmd->request_buffer;
- scb->sg_length = 0;
- use_sg = pci_map_sg(p->pdev, sg, cmd->use_sg, scsi_to_pci_dma_dir(cmd->sc_data_direction));
- /*
- * Copy the segments into the SG array. NOTE!!! - We used to
- * have the first entry both in the data_pointer area and the first
- * SG element. That has changed somewhat. We still have the first
- * entry in both places, but now we download the address of
- * scb->sg_list[1] instead of 0 to the sg pointer in the hscb.
- */
- for (i = 0; i < use_sg; i++)
- {
- unsigned int len = sg_dma_len(sg+i);
- scb->sg_list[i].address = cpu_to_le32(sg_dma_address(sg+i));
- scb->sg_list[i].length = cpu_to_le32(len);
- scb->sg_length += len;
- }
- /* Copy the first SG into the data pointer area. */
- hscb->data_pointer = scb->sg_list[0].address;
- hscb->data_count = scb->sg_list[0].length;
- scb->sg_count = i;
- hscb->SG_segment_count = i;
- hscb->SG_list_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, &scb->sg_list[1]));
- }
- else
- {
- if (cmd->request_bufflen)
- {
- unsigned int address = pci_map_single(p->pdev, cmd->request_buffer,
- cmd->request_bufflen,
- scsi_to_pci_dma_dir(cmd->sc_data_direction));
- aic7xxx_mapping(cmd) = address;
- scb->sg_list[0].address = cpu_to_le32(address);
- scb->sg_list[0].length = cpu_to_le32(cmd->request_bufflen);
- scb->sg_count = 1;
- scb->sg_length = cmd->request_bufflen;
- hscb->SG_segment_count = 1;
- hscb->SG_list_pointer = cpu_to_le32(SCB_DMA_ADDR(scb, &scb->sg_list[0]));
- hscb->data_count = scb->sg_list[0].length;
- hscb->data_pointer = scb->sg_list[0].address;
- }
- else
- {
- scb->sg_count = 0;
- scb->sg_length = 0;
- hscb->SG_segment_count = 0;
- hscb->SG_list_pointer = 0;
- hscb->data_count = 0;
- hscb->data_pointer = 0;
- }
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_queue
- *
- * Description:
- * Queue a SCB to the controller.
- *-F*************************************************************************/
-int
-aic7xxx_queue(Scsi_Cmnd *cmd, void (*fn)(Scsi_Cmnd *))
-{
- struct aic7xxx_host *p;
- struct aic7xxx_scb *scb;
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- int tindex = TARGET_INDEX(cmd);
-#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags = 0;
-#endif
-
- p = (struct aic7xxx_host *) cmd->host->hostdata;
- /*
- * Check to see if channel was scanned.
- */
-
-#ifdef AIC7XXX_VERBOSE_DEBUGGING
- if (!(p->flags & AHC_A_SCANNED) && (cmd->channel == 0))
- {
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(INFO_LEAD "Scanning channel for devices.\n",
- p->host_no, 0, -1, -1);
- p->flags |= AHC_A_SCANNED;
- }
- else
- {
- if (!(p->flags & AHC_B_SCANNED) && (cmd->channel == 1))
- {
- if (aic7xxx_verbose & VERBOSE_PROBE2)
- printk(INFO_LEAD "Scanning channel for devices.\n",
- p->host_no, 1, -1, -1);
- p->flags |= AHC_B_SCANNED;
- }
- }
-
- if (p->dev_active_cmds[tindex] > (cmd->device->queue_depth + 1))
- {
- printk(WARN_LEAD "Commands queued exceeds queue "
- "depth, active=%d\n",
- p->host_no, CTL_OF_CMD(cmd),
- p->dev_active_cmds[tindex]);
- if ( p->dev_active_cmds[tindex] > 220 )
- p->dev_active_cmds[tindex] = 0;
- }
-#endif
-
- scb = scbq_remove_head(&p->scb_data->free_scbs);
- if (scb == NULL)
- {
- DRIVER_LOCK
- aic7xxx_allocate_scb(p);
- DRIVER_UNLOCK
- scb = scbq_remove_head(&p->scb_data->free_scbs);
- }
- if (scb == NULL)
- {
- printk(WARN_LEAD "Couldn't get a free SCB.\n", p->host_no,
- CTL_OF_CMD(cmd));
- cmd->result = (DID_BUS_BUSY << 16);
- DRIVER_LOCK
- aic7xxx_queue_cmd_complete(p, cmd);
- DRIVER_UNLOCK
- return 0;
- }
- else
- {
- scb->cmd = cmd;
- aic7xxx_position(cmd) = scb->hscb->tag;
-
- /*
- * Construct the SCB beforehand, so the sequencer is
- * paused a minimal amount of time.
- */
- aic7xxx_buildscb(p, cmd, scb);
-
- /*
- * Make sure the Scsi_Cmnd pointer is saved, the struct it points to
- * is set up properly, and the parity error flag is reset, then send
- * the SCB to the sequencer and watch the fun begin.
- */
- cmd->scsi_done = fn;
- cmd->result = DID_OK;
- memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
- aic7xxx_error(cmd) = DID_OK;
- aic7xxx_status(cmd) = 0;
- cmd->host_scribble = NULL;
-
- scb->flags |= SCB_ACTIVE | SCB_WAITINGQ;
-
- DRIVER_LOCK
- scbq_insert_tail(&p->waiting_scbs, scb);
- if ( (p->flags & (AHC_IN_ISR | AHC_IN_ABORT | AHC_IN_RESET)) == 0)
- {
- aic7xxx_run_waiting_queues(p);
- }
- DRIVER_UNLOCK
- }
- return (0);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_bus_device_reset
- *
- * Description:
- * Abort or reset the current SCSI command(s). If the scb has not
- * previously been aborted, then we attempt to send a BUS_DEVICE_RESET
- * message to the target. If the scb has previously been unsuccessfully
- * aborted, then we will reset the channel and have all devices renegotiate.
- * Returns an enumerated type that indicates the status of the operation.
- *-F*************************************************************************/
-static int
-aic7xxx_bus_device_reset(struct aic7xxx_host *p, Scsi_Cmnd *cmd)
-{
- struct aic7xxx_scb *scb;
- struct aic7xxx_hwscb *hscb;
- int result = -1;
- int channel;
- unsigned char saved_scbptr, lastphase;
- unsigned char hscb_index;
- int disconnected;
-
- scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]);
- hscb = scb->hscb;
-
- lastphase = aic_inb(p, LASTPHASE);
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- {
- printk(INFO_LEAD "Bus Device reset, scb flags 0x%x, ",
- p->host_no, CTL_OF_SCB(scb), scb->flags);
- switch (lastphase)
- {
- case P_DATAOUT:
- printk("Data-Out phase\n");
- break;
- case P_DATAIN:
- printk("Data-In phase\n");
- break;
- case P_COMMAND:
- printk("Command phase\n");
- break;
- case P_MESGOUT:
- printk("Message-Out phase\n");
- break;
- case P_STATUS:
- printk("Status phase\n");
- break;
- case P_MESGIN:
- printk("Message-In phase\n");
- break;
- default:
- /*
- * We're not in a valid phase, so assume we're idle.
- */
- printk("while idle, LASTPHASE = 0x%x\n", lastphase);
- break;
- }
- printk(INFO_LEAD "SCSISIGI 0x%x, SEQADDR 0x%x, SSTAT0 0x%x, SSTAT1 "
- "0x%x\n", p->host_no, CTL_OF_SCB(scb),
- aic_inb(p, SCSISIGI),
- aic_inb(p, SEQADDR0) | (aic_inb(p, SEQADDR1) << 8),
- aic_inb(p, SSTAT0), aic_inb(p, SSTAT1));
- }
-
- channel = cmd->channel;
-
- /*
- * Send a Device Reset Message:
- * The target that is holding up the bus may not be the same as
- * the one that triggered this timeout (different commands have
- * different timeout lengths). Our strategy here is to queue an
- * abort message to the timed out target if it is disconnected.
- * Otherwise, if we have an active target we stuff the message buffer
- * with an abort message and assert ATN in the hopes that the target
- * will let go of the bus and go to the mesgout phase. If this
- * fails, we'll get another timeout a few seconds later which will
- * attempt a bus reset.
- */
- saved_scbptr = aic_inb(p, SCBPTR);
- disconnected = FALSE;
-
- if (lastphase != P_BUSFREE)
- {
- if (aic_inb(p, SCB_TAG) >= p->scb_data->numscbs)
- {
- printk(WARN_LEAD "Invalid SCB ID %d is active, "
- "SCB flags = 0x%x.\n", p->host_no,
- CTL_OF_CMD(cmd), scb->hscb->tag, scb->flags);
- return(SCSI_RESET_ERROR);
- }
- if (scb->hscb->tag == aic_inb(p, SCB_TAG))
- {
- if ( (lastphase != P_MESGOUT) && (lastphase != P_MESGIN) )
- {
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Device reset message in "
- "message buffer\n", p->host_no, CTL_OF_SCB(scb));
- scb->flags |= SCB_RESET | SCB_DEVICE_RESET;
- aic7xxx_error(scb->cmd) = DID_RESET;
- p->dev_flags[TARGET_INDEX(scb->cmd)] |=
- BUS_DEVICE_RESET_PENDING;
- /* Send the abort message to the active SCB. */
- aic_outb(p, HOST_MSG, MSG_OUT);
- aic_outb(p, lastphase | ATNO, SCSISIGO);
- return(SCSI_RESET_PENDING);
- }
- else
- {
- /* We want to send out the message, but it could screw an already */
- /* in place and being used message. Instead, we return an error */
- /* to try and start the bus reset phase since this command is */
- /* probably hung (aborts failed, and now reset is failing). We */
- /* also make sure to set BUS_DEVICE_RESET_PENDING so we won't try */
- /* any more on this device, but instead will escalate to a bus or */
- /* host reset (additionally, we won't try to abort any more). */
- printk(WARN_LEAD "Device reset, Message buffer "
- "in use\n", p->host_no, CTL_OF_SCB(scb));
- scb->flags |= SCB_RESET | SCB_DEVICE_RESET;
- aic7xxx_error(scb->cmd) = DID_RESET;
- p->dev_flags[TARGET_INDEX(scb->cmd)] |=
- BUS_DEVICE_RESET_PENDING;
- return(SCSI_RESET_ERROR);
- }
- }
- } /* if (last_phase != P_BUSFREE).....indicates we are idle and can work */
- hscb_index = aic7xxx_find_scb(p, scb);
- if (hscb_index == SCB_LIST_NULL)
- {
- disconnected = (aic7xxx_scb_on_qoutfifo(p, scb)) ? FALSE : TRUE;
- }
- else
- {
- aic_outb(p, hscb_index, SCBPTR);
- if (aic_inb(p, SCB_CONTROL) & DISCONNECTED)
- {
- disconnected = TRUE;
- }
- }
- if (disconnected)
- {
- /*
- * Simply set the MK_MESSAGE flag and the SEQINT handler will do
- * the rest on a reconnect.
- */
- scb->hscb->control |= MK_MESSAGE;
- scb->flags |= SCB_RESET | SCB_DEVICE_RESET;
- p->dev_flags[TARGET_INDEX(scb->cmd)] |=
- BUS_DEVICE_RESET_PENDING;
- if (hscb_index != SCB_LIST_NULL)
- {
- unsigned char scb_control;
-
- aic_outb(p, hscb_index, SCBPTR);
- scb_control = aic_inb(p, SCB_CONTROL);
- aic_outb(p, scb_control | MK_MESSAGE, SCB_CONTROL);
- }
- /*
- * Actually requeue this SCB in case we can select the
- * device before it reconnects. If the transaction we
- * want to abort is not tagged, then this will be the only
- * outstanding command and we can simply shove it on the
- * qoutfifo and be done. If it is tagged, then it goes right
- * in with all the others, no problem :) We need to add it
- * to the qinfifo and let the sequencer know it is there.
- * Now, the only problem left to deal with is, *IF* this
- * command completes, in spite of the MK_MESSAGE bit in the
- * control byte, then we need to pick that up in the interrupt
- * routine and clean things up. This *shouldn't* ever happen.
- */
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Queueing device reset "
- "command.\n", p->host_no, CTL_OF_SCB(scb));
- p->qinfifo[p->qinfifonext++] = scb->hscb->tag;
- if (p->features & AHC_QUEUE_REGS)
- aic_outb(p, p->qinfifonext, HNSCB_QOFF);
- else
- aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
- scb->flags |= SCB_QUEUED_ABORT;
- result = SCSI_RESET_PENDING;
- }
- else if (result == -1)
- {
- result = SCSI_RESET_ERROR;
- }
- aic_outb(p, saved_scbptr, SCBPTR);
- return (result);
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_panic_abort
- *
- * Description:
- * Abort the current SCSI command(s).
- *-F*************************************************************************/
-void
-aic7xxx_panic_abort(struct aic7xxx_host *p, Scsi_Cmnd *cmd)
-{
-
- printk("aic7xxx driver version %s/%s\n", AIC7XXX_C_VERSION,
- UTS_RELEASE);
- printk("Controller type:\n %s\n", board_names[p->board_name_index]);
- printk("p->flags=0x%x, p->chip=0x%x, p->features=0x%x, "
- "sequencer %s paused\n",
- p->flags, p->chip, p->features,
- (aic_inb(p, HCNTRL) & PAUSE) ? "is" : "isn't" );
- pause_sequencer(p);
- disable_irq(p->irq);
- aic7xxx_print_card(p);
- aic7xxx_print_scratch_ram(p);
- spin_unlock_irq(&io_request_lock);
- for(;;) barrier();
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_abort
- *
- * Description:
- * Abort the current SCSI command(s).
- *-F*************************************************************************/
-int
-aic7xxx_abort(Scsi_Cmnd *cmd)
-{
- struct aic7xxx_scb *scb = NULL;
- struct aic7xxx_host *p;
- int result, found=0;
- unsigned char tmp_char, saved_hscbptr, next_hscbptr, prev_hscbptr;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags = 0;
-#endif
- Scsi_Cmnd *cmd_next, *cmd_prev;
-
- p = (struct aic7xxx_host *) cmd->host->hostdata;
- scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]);
-
- /*
- * I added a new config option to the driver: "panic_on_abort" that will
- * cause the driver to panic and the machine to stop on the first abort
- * or reset call into the driver. At that point, it prints out a lot of
- * usefull information for me which I can then use to try and debug the
- * problem. Simply enable the boot time prompt in order to activate this
- * code.
- */
- if (aic7xxx_panic_on_abort)
- aic7xxx_panic_abort(p, cmd);
-
- DRIVER_LOCK
-
-/*
- * Run the isr to grab any command in the QOUTFIFO and any other misc.
- * assundry tasks. This should also set up the bh handler if there is
- * anything to be done, but it won't run until we are done here since
- * we are following a straight code path without entering the scheduler
- * code.
- */
- pause_sequencer(p);
- while ( (aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR))
- {
- aic7xxx_isr(p->irq, p, (void *)NULL);
- pause_sequencer(p);
- aic7xxx_done_cmds_complete(p);
- }
-
- if ((scb == NULL) || (cmd->serial_number != cmd->serial_number_at_timeout))
- /* Totally bogus cmd since it points beyond our */
- { /* valid SCB range or doesn't even match it's own*/
- /* timeout serial number. */
- if (aic7xxx_verbose & VERBOSE_ABORT_MID)
- printk(INFO_LEAD "Abort called with bogus Scsi_Cmnd "
- "pointer.\n", p->host_no, CTL_OF_CMD(cmd));
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_ABORT_NOT_RUNNING);
- }
- if (scb->cmd != cmd) /* Hmmm...either this SCB is currently free with a */
- { /* NULL cmd pointer (NULLed out when freed) or it */
- /* has already been recycled for another command */
- /* Either way, this SCB has nothing to do with this*/
- /* command and we need to deal with cmd without */
- /* touching the SCB. */
- /* The theory here is to return a value that will */
- /* make the queued for complete command actually */
- /* finish successfully, or to indicate that we */
- /* don't have this cmd any more and the mid level */
- /* code needs to find it. */
- cmd_next = p->completeq.head;
- cmd_prev = NULL;
- while (cmd_next != NULL)
- {
- if (cmd_next == cmd)
- {
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "Abort called for command "
- "on completeq, completing.\n", p->host_no, CTL_OF_CMD(cmd));
- if ( cmd_prev == NULL )
- p->completeq.head = (Scsi_Cmnd *)cmd_next->host_scribble;
- else
- cmd_prev->host_scribble = cmd_next->host_scribble;
- cmd_next->scsi_done(cmd_next);
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_ABORT_NOT_RUNNING); /* It's already back as a successful
- * completion */
- }
- cmd_prev = cmd_next;
- cmd_next = (Scsi_Cmnd *)cmd_next->host_scribble;
- }
- if (aic7xxx_verbose & VERBOSE_ABORT_MID)
- printk(INFO_LEAD "Abort called for already completed"
- " command.\n", p->host_no, CTL_OF_CMD(cmd));
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_ABORT_NOT_RUNNING);
- }
-
-/* At this point we know the following:
- * the SCB pointer is valid
- * the command pointer passed in to us and the scb->cmd pointer match
- * this then means that the command we need to abort is the same as the
- * command held by the scb pointer and is a valid abort request.
- * Now, we just have to figure out what to do from here. Current plan is:
- * if we have already been here on this command, escalate to a reset
- * if scb is on waiting list or QINFIFO, send it back as aborted, but
- * we also need to be aware of the possibility that we could be using
- * a faked negotiation command that is holding this command up, if
- * so we need to take care of that command instead, which means we
- * would then treat this one like it was sitting around disconnected
- * instead.
- * if scb is on WAITING_SCB list in sequencer, free scb and send back
- * if scb is disconnected and not completed, abort with abort message
- * if scb is currently running, then it may be causing the bus to hang
- * so we want a return value that indicates a reset would be appropriate
- * if the command does not finish shortly
- * if scb is already complete but not on completeq, we're screwed because
- * this can't happen (except if the command is in the QOUTFIFO, in which
- * case we would like it to complete successfully instead of having to
- * to be re-done)
- * All other scenarios already dealt with by previous code.
- */
-
- if ( scb->flags & (SCB_ABORT | SCB_RESET | SCB_QUEUED_ABORT) )
- {
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "SCB aborted once already, "
- "escalating.\n", p->host_no, CTL_OF_SCB(scb));
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_ABORT_SNOOZE);
- }
- if ( (p->flags & (AHC_RESET_PENDING | AHC_ABORT_PENDING)) ||
- (p->dev_flags[TARGET_INDEX(scb->cmd)] &
- BUS_DEVICE_RESET_PENDING) )
- {
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "Reset/Abort pending for this "
- "device, not wasting our time.\n", p->host_no, CTL_OF_SCB(scb));
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_ABORT_PENDING);
- }
-
- found = 0;
- p->flags |= AHC_IN_ABORT;
- if (aic7xxx_verbose & VERBOSE_ABORT)
- printk(INFO_LEAD "Aborting scb %d, flags 0x%x\n",
- p->host_no, CTL_OF_SCB(scb), scb->hscb->tag, scb->flags);
-
-/*
- * First, let's check to see if the currently running command is our target
- * since if it is, the return is fairly easy and quick since we don't want
- * to touch the command in case it might complete, but we do want a timeout
- * in case it's actually hung, so we really do nothing, but tell the mid
- * level code to reset the timeout.
- */
-
- if ( scb->hscb->tag == aic_inb(p, SCB_TAG) )
- {
- /*
- * Check to see if the sequencer is just sitting on this command, or
- * if it's actively being run.
- */
- result = aic_inb(p, LASTPHASE);
- switch (result)
- {
- case P_DATAOUT: /* For any of these cases, we can assume we are */
- case P_DATAIN: /* an active command and act according. For */
- case P_COMMAND: /* anything else we are going to fall on through*/
- case P_STATUS: /* The SCSI_ABORT_SNOOZE will give us two abort */
- case P_MESGOUT: /* chances to finish and then escalate to a */
- case P_MESGIN: /* reset call */
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "SCB is currently active. "
- "Waiting on completion.\n", p->host_no, CTL_OF_SCB(scb));
- unpause_sequencer(p, FALSE);
- p->flags &= ~AHC_IN_ABORT;
- scb->flags |= SCB_RECOVERY_SCB; /* Note the fact that we've been */
- p->flags |= AHC_ABORT_PENDING; /* here so we will know not to */
- DRIVER_UNLOCK /* muck with other SCBs if this */
- return(SCSI_ABORT_PENDING); /* one doesn't complete and clear */
- break; /* out. */
- default:
- break;
- }
- }
-
- if ((found == 0) && (scb->flags & SCB_WAITINGQ))
- {
- int tindex = TARGET_INDEX(cmd);
- unsigned short mask;
-
- mask = (1 << tindex);
-
- if (p->dtr_pending & mask)
- {
- if (p->dev_dtr_cmnd[tindex]->next != cmd)
- found = 1;
- else
- found = 0;
- }
- else
- {
- found = 1;
- }
- if (found == 0)
- {
- /*
- * OK..this means the command we are currently getting an abort
- * for has an outstanding negotiation command in front of it.
- * We don't really have a way to tie back into the negotiation
- * commands, so we just send this back as pending, then it
- * will get reset in 2 seconds.
- */
- unpause_sequencer(p, TRUE);
- scb->flags |= SCB_ABORT;
- DRIVER_UNLOCK
- return(SCSI_ABORT_PENDING);
- }
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "SCB found on waiting list and "
- "aborted.\n", p->host_no, CTL_OF_SCB(scb));
- scbq_remove(&p->waiting_scbs, scb);
- scbq_remove(&p->delayed_scbs[tindex], scb);
- p->dev_active_cmds[tindex]++;
- p->activescbs++;
- scb->flags &= ~(SCB_WAITINGQ | SCB_ACTIVE);
- scb->flags |= SCB_ABORT | SCB_QUEUED_FOR_DONE;
- found = 1;
- }
-
-/*
- * We just checked the waiting_q, now for the QINFIFO
- */
- if ( found == 0 )
- {
- if ( ((found = aic7xxx_search_qinfifo(p, cmd->target,
- cmd->channel,
- cmd->lun, scb->hscb->tag, SCB_ABORT | SCB_QUEUED_FOR_DONE,
- FALSE, NULL)) != 0) &&
- (aic7xxx_verbose & VERBOSE_ABORT_PROCESS))
- printk(INFO_LEAD "SCB found in QINFIFO and "
- "aborted.\n", p->host_no, CTL_OF_SCB(scb));
- }
-
-/*
- * QINFIFO, waitingq, completeq done. Next, check WAITING_SCB list in card
- */
-
- if ( found == 0 )
- {
- unsigned char scb_next_ptr;
- prev_hscbptr = SCB_LIST_NULL;
- saved_hscbptr = aic_inb(p, SCBPTR);
- next_hscbptr = aic_inb(p, WAITING_SCBH);
- while ( next_hscbptr != SCB_LIST_NULL )
- {
- aic_outb(p, next_hscbptr, SCBPTR );
- if ( scb->hscb->tag == aic_inb(p, SCB_TAG) )
- {
- found = 1;
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "SCB found on hardware waiting"
- " list and aborted.\n", p->host_no, CTL_OF_SCB(scb));
- if ( prev_hscbptr == SCB_LIST_NULL )
- {
- aic_outb(p, aic_inb(p, SCB_NEXT), WAITING_SCBH);
- /* stop the selection since we just
- * grabbed the scb out from under the
- * card
- */
- aic_outb(p, aic_inb(p, SCSISEQ) & ~ENSELO, SCSISEQ);
- aic_outb(p, CLRSELTIMEO, CLRSINT1);
- }
- else
- {
- scb_next_ptr = aic_inb(p, SCB_NEXT);
- aic_outb(p, prev_hscbptr, SCBPTR);
- aic_outb(p, scb_next_ptr, SCB_NEXT);
- aic_outb(p, next_hscbptr, SCBPTR);
- }
- aic_outb(p, SCB_LIST_NULL, SCB_TAG);
- aic_outb(p, 0, SCB_CONTROL);
- aic7xxx_add_curscb_to_free_list(p);
- scb->flags = SCB_ABORT | SCB_QUEUED_FOR_DONE;
- break;
- }
- prev_hscbptr = next_hscbptr;
- next_hscbptr = aic_inb(p, SCB_NEXT);
- }
- aic_outb(p, saved_hscbptr, SCBPTR );
- }
-
-/*
- * Hmmm...completeq, QOUTFIFO, QINFIFO, WAITING_SCBH, waitingq all checked.
- * OK...the sequencer's paused, interrupts are off, and we haven't found the
- * command anyplace where it could be easily aborted. Time for the hard
- * work. We also know the command is valid. This essentially means the
- * command is disconnected, or connected but not into any phases yet, which
- * we know due to the tests we ran earlier on the current active scb phase.
- * At this point we can queue the abort tag and go on with life.
- */
-
- if ( found == 0 )
- {
- p->flags |= AHC_ABORT_PENDING;
- scb->flags |= SCB_QUEUED_ABORT | SCB_ABORT | SCB_RECOVERY_SCB;
- scb->hscb->control |= MK_MESSAGE;
- result=aic7xxx_find_scb(p, scb);
- if ( result != SCB_LIST_NULL )
- {
- saved_hscbptr = aic_inb(p, SCBPTR);
- aic_outb(p, result, SCBPTR);
- tmp_char = aic_inb(p, SCB_CONTROL);
- aic_outb(p, tmp_char | MK_MESSAGE, SCB_CONTROL);
- aic_outb(p, saved_hscbptr, SCBPTR);
- }
- if (aic7xxx_verbose & VERBOSE_ABORT_PROCESS)
- printk(INFO_LEAD "SCB disconnected. Queueing Abort"
- " SCB.\n", p->host_no, CTL_OF_SCB(scb));
- p->qinfifo[p->qinfifonext++] = scb->hscb->tag;
- if (p->features & AHC_QUEUE_REGS)
- aic_outb(p, p->qinfifonext, HNSCB_QOFF);
- else
- aic_outb(p, p->qinfifonext, KERNEL_QINPOS);
- }
- if (found)
- {
- aic7xxx_run_done_queue(p, TRUE);
- aic7xxx_run_waiting_queues(p);
- }
- p->flags &= ~AHC_IN_ABORT;
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
-
-/*
- * On the return value. If we found the command and aborted it, then we know
- * it's already sent back and there is no reason for a further timeout, so
- * we use SCSI_ABORT_SUCCESS. On the queued abort side, we aren't so certain
- * there hasn't been a bus hang or something that might keep the abort from
- * from completing. Therefore, we use SCSI_ABORT_PENDING. The first time this
- * is passed back, the timeout on the command gets extended, the second time
- * we pass this back, the mid level SCSI code calls our reset function, which
- * would shake loose a hung bus.
- */
- if ( found != 0 )
- return(SCSI_ABORT_SUCCESS);
- else
- return(SCSI_ABORT_PENDING);
-}
-
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_reset
- *
- * Description:
- * Resetting the bus always succeeds - is has to, otherwise the
- * kernel will panic! Try a surgical technique - sending a BUS
- * DEVICE RESET message - on the offending target before pulling
- * the SCSI bus reset line.
- *-F*************************************************************************/
-int
-aic7xxx_reset(Scsi_Cmnd *cmd, unsigned int flags)
-{
- struct aic7xxx_scb *scb = NULL;
- struct aic7xxx_host *p;
- int tindex;
- int result = -1;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,95)
- unsigned long cpu_flags = 0;
-#endif
-#define DEVICE_RESET 0x01
-#define BUS_RESET 0x02
-#define HOST_RESET 0x04
-#define FAIL 0x08
-#define RESET_DELAY 0x10
- int action;
- Scsi_Cmnd *cmd_prev, *cmd_next;
-
-
- if ( cmd == NULL )
- {
- printk(KERN_WARNING "(scsi?:?:?:?) Reset called with NULL Scsi_Cmnd "
- "pointer, failing.\n");
- return(SCSI_RESET_SNOOZE);
- }
-
- p = (struct aic7xxx_host *) cmd->host->hostdata;
- scb = (p->scb_data->scb_array[aic7xxx_position(cmd)]);
- tindex = TARGET_INDEX(cmd);
-
- /*
- * I added a new config option to the driver: "panic_on_abort" that will
- * cause the driver to panic and the machine to stop on the first abort
- * or reset call into the driver. At that point, it prints out a lot of
- * usefull information for me which I can then use to try and debug the
- * problem. Simply enable the boot time prompt in order to activate this
- * code.
- */
- if (aic7xxx_panic_on_abort)
- aic7xxx_panic_abort(p, cmd);
-
- DRIVER_LOCK
-
- pause_sequencer(p);
- while ( (aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR))
- {
- aic7xxx_isr(p->irq, p, (void *)NULL );
- pause_sequencer(p);
- aic7xxx_done_cmds_complete(p);
- }
-
- if (scb == NULL)
- {
- if (aic7xxx_verbose & VERBOSE_RESET_MID)
- printk(INFO_LEAD "Reset called with bogus Scsi_Cmnd"
- "->SCB mapping, improvising.\n", p->host_no, CTL_OF_CMD(cmd));
- if ( flags & SCSI_RESET_SUGGEST_HOST_RESET )
- {
- action = HOST_RESET;
- }
- else
- {
- action = BUS_RESET;
- }
- }
- else if (scb->cmd != cmd)
- {
- if (aic7xxx_verbose & VERBOSE_RESET_MID)
- printk(INFO_LEAD "Reset called with recycled SCB "
- "for cmd.\n", p->host_no, CTL_OF_CMD(cmd));
- cmd_prev = NULL;
- cmd_next = p->completeq.head;
- while ( cmd_next != NULL )
- {
- if (cmd_next == cmd)
- {
- if (aic7xxx_verbose & VERBOSE_RESET_RETURN)
- printk(INFO_LEAD "Reset, found cmd on completeq"
- ", completing.\n", p->host_no, CTL_OF_CMD(cmd));
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_RESET_NOT_RUNNING);
- }
- cmd_prev = cmd_next;
- cmd_next = (Scsi_Cmnd *)cmd_next->host_scribble;
- }
- if ( !(flags & SCSI_RESET_SYNCHRONOUS) )
- {
- if (aic7xxx_verbose & VERBOSE_RESET_RETURN)
- printk(INFO_LEAD "Reset, cmd not found,"
- " failing.\n", p->host_no, CTL_OF_CMD(cmd));
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_RESET_NOT_RUNNING);
- }
- else
- {
- if (aic7xxx_verbose & VERBOSE_RESET_MID)
- printk(INFO_LEAD "Reset called, no scb, "
- "flags 0x%x\n", p->host_no, CTL_OF_CMD(cmd), flags);
- scb = NULL;
- action = HOST_RESET;
- }
- }
- else
- {
- if (aic7xxx_verbose & VERBOSE_RESET_MID)
- printk(INFO_LEAD "Reset called, scb %d, flags "
- "0x%x\n", p->host_no, CTL_OF_SCB(scb), scb->hscb->tag, scb->flags);
- if ( aic7xxx_scb_on_qoutfifo(p, scb) )
- {
- if(aic7xxx_verbose & VERBOSE_RESET_RETURN)
- printk(INFO_LEAD "SCB on qoutfifo, completing.\n", p->host_no,
- CTL_OF_SCB(scb));
- if ((aic_inb(p,INTSTAT) & CMDCMPLT) == 0)
- printk(INFO_LEAD "missed CMDCMPLT interrupt!\n", p->host_no,
- CTL_OF_SCB(scb));
- aic7xxx_handle_command_completion_intr(p);
- aic7xxx_done_cmds_complete(p);
- aic7xxx_run_waiting_queues(p);
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_RESET_SUCCESS);
- }
- if ( flags & SCSI_RESET_SUGGEST_HOST_RESET )
- {
- action = HOST_RESET;
- }
- else if ( flags & SCSI_RESET_SUGGEST_BUS_RESET )
- {
- action = BUS_RESET;
- }
- else
- {
- action = DEVICE_RESET;
- }
- }
- if ( (action & DEVICE_RESET) &&
- (p->dev_flags[tindex] & BUS_DEVICE_RESET_PENDING) )
- {
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Bus device reset already sent to "
- "device, escalating.\n", p->host_no, CTL_OF_CMD(cmd));
- action = BUS_RESET;
- }
- if ( (action & DEVICE_RESET) &&
- (scb->flags & SCB_QUEUED_ABORT) )
- {
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- {
- printk(INFO_LEAD "Have already attempted to reach "
- "device with queued\n", p->host_no, CTL_OF_CMD(cmd));
- printk(INFO_LEAD "message, will escalate to bus "
- "reset.\n", p->host_no, CTL_OF_CMD(cmd));
- }
- action = BUS_RESET;
- }
- if ( (action & DEVICE_RESET) &&
- (p->flags & (AHC_RESET_PENDING | AHC_ABORT_PENDING)) )
- {
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Bus device reset stupid when "
- "other action has failed.\n", p->host_no, CTL_OF_CMD(cmd));
- action = BUS_RESET;
- }
- if ( (action & BUS_RESET) && !(p->features & AHC_TWIN) )
- {
- action = HOST_RESET;
- }
- if ( (p->dev_flags[tindex] & DEVICE_RESET_DELAY) &&
- !(action & (HOST_RESET | BUS_RESET)))
- {
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- {
- printk(INFO_LEAD "Reset called too soon after last "
- "reset without requesting\n", p->host_no, CTL_OF_CMD(cmd));
- printk(INFO_LEAD "bus or host reset, escalating.\n", p->host_no,
- CTL_OF_CMD(cmd));
- }
- action = BUS_RESET;
- }
- if ( (p->flags & AHC_RESET_DELAY) &&
- (action & (HOST_RESET | BUS_RESET)) )
- {
- if (aic7xxx_verbose & VERBOSE_RESET_PROCESS)
- printk(INFO_LEAD "Reset called too soon after "
- "last bus reset, delaying.\n", p->host_no, CTL_OF_CMD(cmd));
- action = RESET_DELAY;
- }
-/*
- * By this point, we want to already know what we are going to do and
- * only have the following code implement our course of action.
- */
- switch (action)
- {
- case RESET_DELAY:
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_RESET_PENDING);
- break;
- case FAIL:
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(SCSI_RESET_ERROR);
- break;
- case DEVICE_RESET:
- p->flags |= AHC_IN_RESET;
- result = aic7xxx_bus_device_reset(p, cmd);
- aic7xxx_run_done_queue(p, TRUE);
- /* We can't rely on run_waiting_queues to unpause the sequencer for
- * PCI based controllers since we use AAP */
- aic7xxx_run_waiting_queues(p);
- unpause_sequencer(p, FALSE);
- p->flags &= ~AHC_IN_RESET;
- DRIVER_UNLOCK
- return(result);
- break;
- case BUS_RESET:
- case HOST_RESET:
- default:
- p->flags |= AHC_IN_RESET | AHC_RESET_DELAY;
- p->dev_expires[p->scsi_id] = jiffies + (3 * HZ);
- p->dev_timer_active |= (0x01 << p->scsi_id);
- if ( !(p->dev_timer_active & (0x01 << MAX_TARGETS)) ||
- time_after_eq(p->dev_timer.expires, p->dev_expires[p->scsi_id]) )
- {
- mod_timer(&p->dev_timer, p->dev_expires[p->scsi_id]);
- p->dev_timer_active |= (0x01 << MAX_TARGETS);
- }
- aic7xxx_reset_channel(p, cmd->channel, TRUE);
- if ( (p->features & AHC_TWIN) && (action & HOST_RESET) )
- {
- aic7xxx_reset_channel(p, cmd->channel ^ 0x01, TRUE);
- restart_sequencer(p);
- }
- if (action != HOST_RESET)
- result = SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET;
- else
- {
- result = SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET;
- aic_outb(p, aic_inb(p, SIMODE1) & ~(ENREQINIT|ENBUSFREE),
- SIMODE1);
- aic7xxx_clear_intstat(p);
- p->flags &= ~AHC_HANDLING_REQINITS;
- p->msg_type = MSG_TYPE_NONE;
- p->msg_index = 0;
- p->msg_len = 0;
- }
- aic7xxx_run_done_queue(p, TRUE);
- /*
- * If this a SCSI_RESET_SYNCHRONOUS then the command we were given is
- * in need of being re-started, so send it on through to aic7xxx_queue
- * and let it set until the delay is over. This keeps it from dying
- * entirely and avoids getting a bogus dead command back through the
- * mid-level code due to too many retries.
- */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,132)
- if ( flags & SCSI_RESET_SYNCHRONOUS )
- {
- cmd->result = DID_BUS_BUSY << 16;
- cmd->done(cmd);
- }
-#endif
- p->flags &= ~AHC_IN_RESET;
- /*
- * We can't rely on run_waiting_queues to unpause the sequencer for
- * PCI based controllers since we use AAP. NOTE: this also sets
- * the timer for the one command we might have queued in the case
- * of a synch reset.
- */
- aic7xxx_run_waiting_queues(p);
- unpause_sequencer(p, FALSE);
- DRIVER_UNLOCK
- return(result);
- break;
- }
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_biosparam
- *
- * Description:
- * Return the disk geometry for the given SCSI device.
- *-F*************************************************************************/
-int
-aic7xxx_biosparam(Disk *disk, kdev_t dev, int geom[])
-{
- int heads, sectors, cylinders, ret;
- struct aic7xxx_host *p;
- struct buffer_head *bh;
-
- p = (struct aic7xxx_host *) disk->device->host->hostdata;
- bh = bread(MKDEV(MAJOR(dev), MINOR(dev)&~0xf), 0, 1024);
-
- if ( bh )
- {
- ret = scsi_partsize(bh, disk->capacity, &geom[2], &geom[0], &geom[1]);
- brelse(bh);
- if ( ret != -1 )
- return(ret);
- }
-
- heads = 64;
- sectors = 32;
- cylinders = disk->capacity / (heads * sectors);
-
- if ((p->flags & AHC_EXTEND_TRANS_A) && (cylinders > 1024))
- {
- heads = 255;
- sectors = 63;
- cylinders = disk->capacity / (heads * sectors);
- }
-
- geom[0] = heads;
- geom[1] = sectors;
- geom[2] = cylinders;
-
- return (0);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_release
- *
- * Description:
- * Free the passed in Scsi_Host memory structures prior to unloading the
- * module.
- *-F*************************************************************************/
-int
-aic7xxx_release(struct Scsi_Host *host)
-{
- struct aic7xxx_host *p = (struct aic7xxx_host *) host->hostdata;
- struct aic7xxx_host *next, *prev;
-
- if(p->irq)
- free_irq(p->irq, p);
- if(p->base)
- release_region(p->base, MAXREG - MINREG);
-#ifdef MMAPIO
- if(p->maddr)
- {
- iounmap((void *) (((unsigned long) p->maddr) & PAGE_MASK));
- }
-#endif /* MMAPIO */
- prev = NULL;
- next = first_aic7xxx;
- while(next != NULL)
- {
- if(next == p)
- {
- if(prev == NULL)
- first_aic7xxx = next->next;
- else
- prev->next = next->next;
- }
- else
- {
- prev = next;
- }
- next = next->next;
- }
- aic7xxx_free(p);
- return(0);
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_print_card
- *
- * Description:
- * Print out all of the control registers on the card
- *
- * NOTE: This function is not yet safe for use on the VLB and EISA
- * controllers, so it isn't used on those controllers at all.
- *-F*************************************************************************/
-static void
-aic7xxx_print_card(struct aic7xxx_host *p)
-{
- int i, j, k, chip;
- static struct register_ranges {
- int num_ranges;
- int range_val[32];
- } cards_ds[] = {
- { 0, {0,} }, /* none */
- {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1f, 0x1f, 0x60, 0x60, /*7771*/
- 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9b, 0x9f} },
- { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7850*/
- 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
- { 9, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7860*/
- 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
- {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1c, 0x1f, 0x60, 0x60, /*7870*/
- 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
- {10, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1a, 0x1c, 0x1f, 0x60, 0x60, /*7880*/
- 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9f} },
- {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7890*/
- 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f,
- 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc,
- 0xfe, 0xff} },
- {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x19, 0x1b, 0x1f, 0x60, 0x60, /*7895*/
- 0x62, 0x66, 0x80, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a,
- 0x9f, 0x9f, 0xe0, 0xf1} },
- {16, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7896*/
- 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9f, 0x9f,
- 0xe0, 0xf1, 0xf4, 0xf4, 0xf6, 0xf6, 0xf8, 0xf8, 0xfa, 0xfc,
- 0xfe, 0xff} },
- {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7892*/
- 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f,
- 0xe0, 0xf1, 0xf4, 0xfc} },
- {12, {0x00, 0x05, 0x08, 0x11, 0x18, 0x1f, 0x60, 0x60, 0x62, 0x66, /*7899*/
- 0x84, 0x8e, 0x90, 0x95, 0x97, 0x97, 0x9a, 0x9a, 0x9c, 0x9f,
- 0xe0, 0xf1, 0xf4, 0xfc} },
- };
- chip = p->chip & AHC_CHIPID_MASK;
- printk("%s at ",
- board_names[p->board_name_index]);
- switch(p->chip & ~AHC_CHIPID_MASK)
- {
- case AHC_VL:
- printk("VLB Slot %d.\n", p->pci_device_fn);
- break;
- case AHC_EISA:
- printk("EISA Slot %d.\n", p->pci_device_fn);
- break;
- case AHC_PCI:
- default:
- printk("PCI %d/%d/%d.\n", p->pci_bus, PCI_SLOT(p->pci_device_fn),
- PCI_FUNC(p->pci_device_fn));
- break;
- }
-
- /*
- * the registers on the card....
- */
- printk("Card Dump:\n");
- k = 0;
- for(i=0; i<cards_ds[chip].num_ranges; i++)
- {
- for(j = cards_ds[chip].range_val[ i * 2 ];
- j <= cards_ds[chip].range_val[ i * 2 + 1 ] ;
- j++)
- {
- printk("%02x:%02x ", j, aic_inb(p, j));
- if(++k == 13)
- {
- printk("\n");
- k=0;
- }
- }
- }
- if(k != 0)
- printk("\n");
-
- /*
- * If this was an Ultra2 controller, then we just hosed the card in terms
- * of the QUEUE REGS. This function is only called at init time or by
- * the panic_abort function, so it's safe to assume a generic init time
- * setting here
- */
-
- if(p->features & AHC_QUEUE_REGS)
- {
- aic_outb(p, 0, SDSCB_QOFF);
- aic_outb(p, 0, SNSCB_QOFF);
- aic_outb(p, 0, HNSCB_QOFF);
- }
-
-}
-
-/*+F*************************************************************************
- * Function:
- * aic7xxx_print_scratch_ram
- *
- * Description:
- * Print out the scratch RAM values on the card.
- *-F*************************************************************************/
-static void
-aic7xxx_print_scratch_ram(struct aic7xxx_host *p)
-{
- int i, k;
-
- k = 0;
- printk("Scratch RAM:\n");
- for(i = SRAM_BASE; i < SEQCTL; i++)
- {
- printk("%02x:%02x ", i, aic_inb(p, i));
- if(++k == 13)
- {
- printk("\n");
- k=0;
- }
- }
- if (p->features & AHC_MORE_SRAM)
- {
- for(i = TARG_OFFSET; i < 0x80; i++)
- {
- printk("%02x:%02x ", i, aic_inb(p, i));
- if(++k == 13)
- {
- printk("\n");
- k=0;
- }
- }
- }
- printk("\n");
-}
-
-
-#include "aic7xxx_proc.c"
-
-/* Eventually this will go into an include file, but this will be later */
-static Scsi_Host_Template driver_template = AIC7XXX;
-
-#include "scsi_module.c"
-
-/*
- * Overrides for Emacs so that we almost follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 2
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -2
- * c-argdecl-indent: 2
- * c-label-offset: -2
- * c-continued-statement-offset: 2
- * c-continued-brace-offset: 0
- * indent-tabs-mode: nil
- * tab-width: 8
- * End:
- */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)