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Diffstat (limited to 'arch/powerpc/platforms/pseries/vio.c')
-rw-r--r--arch/powerpc/platforms/pseries/vio.c274
1 files changed, 0 insertions, 274 deletions
diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c
deleted file mode 100644
index 8e53e04ada8..00000000000
--- a/arch/powerpc/platforms/pseries/vio.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * IBM PowerPC pSeries Virtual I/O Infrastructure Support.
- *
- * Copyright (c) 2003-2005 IBM Corp.
- * Dave Engebretsen engebret@us.ibm.com
- * Santiago Leon santil@us.ibm.com
- * Hollis Blanchard <hollisb@us.ibm.com>
- * Stephen Rothwell
- *
- * 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.
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/kobject.h>
-#include <asm/iommu.h>
-#include <asm/dma.h>
-#include <asm/prom.h>
-#include <asm/vio.h>
-#include <asm/hvcall.h>
-#include <asm/tce.h>
-
-extern struct subsystem devices_subsys; /* needed for vio_find_name() */
-
-static void probe_bus_pseries(void)
-{
- struct device_node *node_vroot, *of_node;
-
- node_vroot = find_devices("vdevice");
- if ((node_vroot == NULL) || (node_vroot->child == NULL))
- /* this machine doesn't do virtual IO, and that's ok */
- return;
-
- /*
- * Create struct vio_devices for each virtual device in the device tree.
- * Drivers will associate with them later.
- */
- for (of_node = node_vroot->child; of_node != NULL;
- of_node = of_node->sibling) {
- printk(KERN_DEBUG "%s: processing %p\n", __FUNCTION__, of_node);
- vio_register_device_node(of_node);
- }
-}
-
-/**
- * vio_match_device_pseries: - Tell if a pSeries VIO device matches a
- * vio_device_id
- */
-static int vio_match_device_pseries(const struct vio_device_id *id,
- const struct vio_dev *dev)
-{
- return (strncmp(dev->type, id->type, strlen(id->type)) == 0) &&
- device_is_compatible(dev->dev.platform_data, id->compat);
-}
-
-static void vio_release_device_pseries(struct device *dev)
-{
- /* XXX free TCE table */
- of_node_put(dev->platform_data);
-}
-
-static ssize_t viodev_show_devspec(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct device_node *of_node = dev->platform_data;
-
- return sprintf(buf, "%s\n", of_node->full_name);
-}
-DEVICE_ATTR(devspec, S_IRUSR | S_IRGRP | S_IROTH, viodev_show_devspec, NULL);
-
-static void vio_unregister_device_pseries(struct vio_dev *viodev)
-{
- device_remove_file(&viodev->dev, &dev_attr_devspec);
-}
-
-static struct vio_bus_ops vio_bus_ops_pseries = {
- .match = vio_match_device_pseries,
- .unregister_device = vio_unregister_device_pseries,
- .release_device = vio_release_device_pseries,
-};
-
-/**
- * vio_bus_init_pseries: - Initialize the pSeries virtual IO bus
- */
-static int __init vio_bus_init_pseries(void)
-{
- int err;
-
- err = vio_bus_init(&vio_bus_ops_pseries);
- if (err == 0)
- probe_bus_pseries();
- return err;
-}
-
-__initcall(vio_bus_init_pseries);
-
-/**
- * vio_build_iommu_table: - gets the dma information from OF and
- * builds the TCE tree.
- * @dev: the virtual device.
- *
- * Returns a pointer to the built tce tree, or NULL if it can't
- * find property.
-*/
-static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev)
-{
- unsigned int *dma_window;
- struct iommu_table *newTceTable;
- unsigned long offset;
- int dma_window_property_size;
-
- dma_window = (unsigned int *) get_property(dev->dev.platform_data, "ibm,my-dma-window", &dma_window_property_size);
- if(!dma_window) {
- return NULL;
- }
-
- newTceTable = (struct iommu_table *) kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
-
- /* There should be some code to extract the phys-encoded offset
- using prom_n_addr_cells(). However, according to a comment
- on earlier versions, it's always zero, so we don't bother */
- offset = dma_window[1] >> PAGE_SHIFT;
-
- /* TCE table size - measured in tce entries */
- newTceTable->it_size = dma_window[4] >> PAGE_SHIFT;
- /* offset for VIO should always be 0 */
- newTceTable->it_offset = offset;
- newTceTable->it_busno = 0;
- newTceTable->it_index = (unsigned long)dma_window[0];
- newTceTable->it_type = TCE_VB;
-
- return iommu_init_table(newTceTable);
-}
-
-/**
- * vio_register_device_node: - Register a new vio device.
- * @of_node: The OF node for this device.
- *
- * Creates and initializes a vio_dev structure from the data in
- * of_node (dev.platform_data) and adds it to the list of virtual devices.
- * Returns a pointer to the created vio_dev or NULL if node has
- * NULL device_type or compatible fields.
- */
-struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node)
-{
- struct vio_dev *viodev;
- unsigned int *unit_address;
- unsigned int *irq_p;
-
- /* we need the 'device_type' property, in order to match with drivers */
- if ((NULL == of_node->type)) {
- printk(KERN_WARNING
- "%s: node %s missing 'device_type'\n", __FUNCTION__,
- of_node->name ? of_node->name : "<unknown>");
- return NULL;
- }
-
- unit_address = (unsigned int *)get_property(of_node, "reg", NULL);
- if (!unit_address) {
- printk(KERN_WARNING "%s: node %s missing 'reg'\n", __FUNCTION__,
- of_node->name ? of_node->name : "<unknown>");
- return NULL;
- }
-
- /* allocate a vio_dev for this node */
- viodev = kmalloc(sizeof(struct vio_dev), GFP_KERNEL);
- if (!viodev) {
- return NULL;
- }
- memset(viodev, 0, sizeof(struct vio_dev));
-
- viodev->dev.platform_data = of_node_get(of_node);
-
- viodev->irq = NO_IRQ;
- irq_p = (unsigned int *)get_property(of_node, "interrupts", NULL);
- if (irq_p) {
- int virq = virt_irq_create_mapping(*irq_p);
- if (virq == NO_IRQ) {
- printk(KERN_ERR "Unable to allocate interrupt "
- "number for %s\n", of_node->full_name);
- } else
- viodev->irq = irq_offset_up(virq);
- }
-
- snprintf(viodev->dev.bus_id, BUS_ID_SIZE, "%x", *unit_address);
- viodev->name = of_node->name;
- viodev->type = of_node->type;
- viodev->unit_address = *unit_address;
- viodev->iommu_table = vio_build_iommu_table(viodev);
-
- /* register with generic device framework */
- if (vio_register_device(viodev) == NULL) {
- /* XXX free TCE table */
- kfree(viodev);
- return NULL;
- }
- device_create_file(&viodev->dev, &dev_attr_devspec);
-
- return viodev;
-}
-EXPORT_SYMBOL(vio_register_device_node);
-
-/**
- * vio_get_attribute: - get attribute for virtual device
- * @vdev: The vio device to get property.
- * @which: The property/attribute to be extracted.
- * @length: Pointer to length of returned data size (unused if NULL).
- *
- * Calls prom.c's get_property() to return the value of the
- * attribute specified by the preprocessor constant @which
-*/
-const void * vio_get_attribute(struct vio_dev *vdev, void* which, int* length)
-{
- return get_property(vdev->dev.platform_data, (char*)which, length);
-}
-EXPORT_SYMBOL(vio_get_attribute);
-
-/* vio_find_name() - internal because only vio.c knows how we formatted the
- * kobject name
- * XXX once vio_bus_type.devices is actually used as a kset in
- * drivers/base/bus.c, this function should be removed in favor of
- * "device_find(kobj_name, &vio_bus_type)"
- */
-static struct vio_dev *vio_find_name(const char *kobj_name)
-{
- struct kobject *found;
-
- found = kset_find_obj(&devices_subsys.kset, kobj_name);
- if (!found)
- return NULL;
-
- return to_vio_dev(container_of(found, struct device, kobj));
-}
-
-/**
- * vio_find_node - find an already-registered vio_dev
- * @vnode: device_node of the virtual device we're looking for
- */
-struct vio_dev *vio_find_node(struct device_node *vnode)
-{
- uint32_t *unit_address;
- char kobj_name[BUS_ID_SIZE];
-
- /* construct the kobject name from the device node */
- unit_address = (uint32_t *)get_property(vnode, "reg", NULL);
- if (!unit_address)
- return NULL;
- snprintf(kobj_name, BUS_ID_SIZE, "%x", *unit_address);
-
- return vio_find_name(kobj_name);
-}
-EXPORT_SYMBOL(vio_find_node);
-
-int vio_enable_interrupts(struct vio_dev *dev)
-{
- int rc = h_vio_signal(dev->unit_address, VIO_IRQ_ENABLE);
- if (rc != H_SUCCESS)
- printk(KERN_ERR "vio: Error 0x%x enabling interrupts\n", rc);
- return rc;
-}
-EXPORT_SYMBOL(vio_enable_interrupts);
-
-int vio_disable_interrupts(struct vio_dev *dev)
-{
- int rc = h_vio_signal(dev->unit_address, VIO_IRQ_DISABLE);
- if (rc != H_SUCCESS)
- printk(KERN_ERR "vio: Error 0x%x disabling interrupts\n", rc);
- return rc;
-}
-EXPORT_SYMBOL(vio_disable_interrupts);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 18:23:04 +0000