patch-2.4.22 linux-2.4.22/arch/ia64/sn/io/platform_init/sgi_io_init.c

• Lines: 110
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/ia64/sn/io/platform_init/sgi_io_init.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/ia64/sn/io/platform_init/sgi_io_init.c linux-2.4.22/arch/ia64/sn/io/platform_init/sgi_io_init.c
@@ -0,0 +1,109 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/config.h>
+#include <linux/slab.h>
+#include <asm/sn/sgi.h>
+#include <asm/sn/io.h>
+#include <asm/sn/sn_cpuid.h>
+#include <asm/sn/klconfig.h>
+#include <asm/sn/sn_private.h>
+#include <asm/sn/pda.h>
+#include <linux/smp.h>
+
+extern int init_hcl(void);
+
+/*
+ * per_hub_init
+ *
+ * 	This code is executed once for each Hub chip.
+ */
+void
+per_hub_init(cnodeid_t cnode)
+{
+	nasid_t		nasid;
+	nodepda_t	*npdap;
+	ii_icmr_u_t	ii_icmr;
+	ii_ibcr_u_t	ii_ibcr;
+	ii_ilcsr_u_t	ii_ilcsr;
+
+	nasid = COMPACT_TO_NASID_NODEID(cnode);
+
+	ASSERT(nasid != INVALID_NASID);
+	ASSERT(NASID_TO_COMPACT_NODEID(nasid) == cnode);
+
+	npdap = NODEPDA(cnode);
+
+	/* Disable the request and reply errors. */
+	REMOTE_HUB_S(nasid, IIO_IWEIM, 0xC000);
+
+	/*
+	 * Set the total number of CRBs that can be used.
+	 */
+	ii_icmr.ii_icmr_regval= 0x0;
+	ii_icmr.ii_icmr_fld_s.i_c_cnt = 0xf;
+	if (enable_shub_wars_1_1() ) {
+		// Set bit one of ICMR to prevent II from sending interrupt for II bug.
+		ii_icmr.ii_icmr_regval |= 0x1; 
+	}
+	REMOTE_HUB_S(nasid, IIO_ICMR, ii_icmr.ii_icmr_regval);
+
+	/*
+	 * Set the number of CRBs that both of the BTEs combined
+	 * can use minus 1.
+	 */
+	ii_ibcr.ii_ibcr_regval= 0x0;
+	ii_ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(nasid, IIO_LLP_CSR);
+	if (ii_ilcsr.ii_ilcsr_fld_s.i_llp_stat & LNK_STAT_WORKING) {
+	    ii_ibcr.ii_ibcr_fld_s.i_count = 0x8;
+	} else {
+	    /*
+	     * if the LLP is down, there is no attached I/O, so
+	    * give BTE all the CRBs.
+	    */
+	    ii_ibcr.ii_ibcr_fld_s.i_count = 0x14;
+	}
+	REMOTE_HUB_S(nasid, IIO_IBCR, ii_ibcr.ii_ibcr_regval);
+
+	/*
+	 * Set CRB timeout to be 10ms.
+	 */
+	REMOTE_HUB_S(nasid, IIO_ICTP, 0xffffff );
+	REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
+
+	/* Initialize error interrupts for this hub. */
+	hub_error_init(cnode);
+}
+
+/*
+ * This routine is responsible for the setup of all the IRIX hwgraph style
+ * stuff that's been pulled into linux.  It's called by sn_pci_find_bios which
+ * is called just before the generic Linux PCI layer does its probing (by 
+ * platform_pci_fixup aka sn_pci_fixup).
+ *
+ * It is very IMPORTANT that this call is only made by the Master CPU!
+ *
+ */
+
+void
+sgi_master_io_infr_init(void)
+{
+	extern void irix_io_init(void);
+
+	init_hcl(); /* Sets up the hwgraph compatibility layer with devfs */
+	irix_io_init(); /* Do IRIX Compatibility IO Init */
+
+#ifdef	CONFIG_KDB
+	{
+		extern void kdba_io_init(void);
+		kdba_io_init();
+	}
+#endif
+
+}