patch-2.4.25 linux-2.4.25/include/asm-ppc64/vio.h

• Lines: 130
• Date: 2004-02-18 05:36:32.000000000 -0800
• Orig file: linux-2.4.24/include/asm-ppc64/vio.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.24/include/asm-ppc64/vio.h linux-2.4.25/include/asm-ppc64/vio.h
@@ -0,0 +1,129 @@
+/*
+ * IBM PowerPC Virtual I/O Infrastructure Support.
+ *
+ * Dave Engebretsen engebret@us.ibm.com
+ *    Copyright (c) 2003 Dave Engebretsen
+ *
+ *      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 of the License, or (at your option) any later version.
+ */
+
+#ifndef _VIO_H
+#define _VIO_H
+
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <asm/hvcall.h>
+#include <asm/prom.h>
+#include <asm/scatterlist.h>
+/*
+ * Architecture-specific constants for drivers to
+ * extract attributes of the device using vio_get_attribute()
+*/
+#define VETH_MAC_ADDR "local-mac-address"
+#define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
+
+/* End architecture-specific constants */
+
+#define h_vio_signal(ua, mode) \
+  plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
+
+#define VIO_IRQ_DISABLE		0UL
+#define VIO_IRQ_ENABLE		1UL
+
+struct vio_dev;
+struct vio_driver;
+struct vio_device_id;
+struct TceTable;
+
+int vio_register_driver(struct vio_driver *drv);
+int vio_unregister_driver(struct vio_driver *drv);
+const struct vio_device_id * vio_match_device(const struct vio_device_id *ids,
+						const struct vio_dev *dev);
+struct vio_dev * __devinit vio_register_device(struct device_node *node_vdev);
+struct vio_driver * __devinit vio_find_driver(struct vio_dev* dev);
+const void * vio_get_attribute(struct vio_dev *vdev, void* which, int* length);
+int vio_get_irq(struct vio_dev *dev);
+struct TceTable * vio_build_tce_table(struct vio_dev *dev);
+int vio_enable_interrupts(struct vio_dev *dev);
+int vio_disable_interrupts(struct vio_dev *dev);
+
+dma_addr_t vio_map_single(struct vio_dev *dev, void *vaddr,
+			  size_t size, int direction);
+void vio_unmap_single(struct vio_dev *dev, dma_addr_t dma_handle,
+		      size_t size, int direction);
+int vio_map_sg(struct vio_dev *vdev, struct scatterlist *sglist,
+	       int nelems, int direction);
+void vio_unmap_sg(struct vio_dev *vdev, struct scatterlist *sglist,
+		  int nelems, int direction);
+void *vio_alloc_consistent(struct vio_dev *dev, size_t size,
+			   dma_addr_t *dma_handle);
+void vio_free_consistent(struct vio_dev *dev, size_t size, void *vaddr,
+			 dma_addr_t dma_handle);
+
+struct vio_device_id {
+	char *type;
+	char *compat;
+/* I don't think we need this
+	unsigned long driver_data;	*/ /* Data private to the driver */
+};
+
+struct vio_driver {
+	struct list_head node;
+	char *name;
+	const struct vio_device_id *id_table;	/* NULL if wants all devices */
+	int  (*probe)  (struct vio_dev *dev, const struct vio_device_id *id);	/* New device inserted */
+	void (*remove) (struct vio_dev *dev);	/* Device removed (NULL if not a hot-plug capable driver) */
+	unsigned long driver_data;
+};
+
+struct vio_bus;
+/*
+ * The vio_dev structure is used to describe virtual I/O devices.
+ */
+struct vio_dev {
+	struct list_head devices_list;   /* node in list of all vio devices */
+	struct device_node *archdata;    /* Open Firmware node */
+	struct vio_bus *bus;            /* bus this device is on */
+	struct vio_driver *driver;      /* owning driver */
+	void *driver_data;              /* data private to the driver */
+	unsigned long unit_address;
+
+	struct TceTable *tce_table; /* vio_map_* uses this */
+	unsigned int irq;
+	struct proc_dir_entry *procent; /* device entry in /proc/bus/vio */
+};
+
+struct vio_bus {
+	struct list_head devices;       /* list of virtual devices */
+};
+
+
+static inline int vio_module_init(struct vio_driver *drv)
+{
+	int rc = vio_register_driver (drv);
+
+	if (rc > 0)
+		return 0;
+
+	/* iff CONFIG_HOTPLUG and built into kernel, we should
+	 * leave the driver around for future hotplug events.
+	 * For the module case, a hotplug daemon of some sort
+	 * should load a module in response to an insert event. */
+#if defined(CONFIG_HOTPLUG) && !defined(MODULE)
+	if (rc == 0)
+		return 0;
+#else
+	if (rc == 0)
+		rc = -ENODEV;
+#endif
+
+	/* if we get here, we need to clean up vio driver instance
+	 * and return some sort of error */
+
+	return rc;
+}
+
+#endif /* _PHYP_H */