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path: root/drivers/char/drm/drm_agpsupport.c
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Diffstat (limited to 'drivers/char/drm/drm_agpsupport.c')
-rw-r--r--drivers/char/drm/drm_agpsupport.c455
1 files changed, 0 insertions, 455 deletions
diff --git a/drivers/char/drm/drm_agpsupport.c b/drivers/char/drm/drm_agpsupport.c
deleted file mode 100644
index aefa5ac4c0b1..000000000000
--- a/drivers/char/drm/drm_agpsupport.c
+++ /dev/null
@@ -1,455 +0,0 @@
-/**
- * \file drm_agpsupport.c
- * DRM support for AGP/GART backend
- *
- * \author Rickard E. (Rik) Faith <faith@valinux.com>
- * \author Gareth Hughes <gareth@valinux.com>
- */
-
-/*
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "drmP.h"
-#include <linux/module.h>
-
-#if __OS_HAS_AGP
-
-/**
- * Get AGP information.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg pointer to a (output) drm_agp_info structure.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device has been initialized and acquired and fills in the
- * drm_agp_info structure with the information in drm_agp_head::agp_info.
- */
-int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info)
-{
- DRM_AGP_KERN *kern;
-
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
-
- kern = &dev->agp->agp_info;
- info->agp_version_major = kern->version.major;
- info->agp_version_minor = kern->version.minor;
- info->mode = kern->mode;
- info->aperture_base = kern->aper_base;
- info->aperture_size = kern->aper_size * 1024 * 1024;
- info->memory_allowed = kern->max_memory << PAGE_SHIFT;
- info->memory_used = kern->current_memory << PAGE_SHIFT;
- info->id_vendor = kern->device->vendor;
- info->id_device = kern->device->device;
-
- return 0;
-}
-
-EXPORT_SYMBOL(drm_agp_info);
-
-int drm_agp_info_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_agp_info *info = data;
- int err;
-
- err = drm_agp_info(dev, info);
- if (err)
- return err;
-
- return 0;
-}
-
-/**
- * Acquire the AGP device.
- *
- * \param dev DRM device that is to acquire AGP.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device hasn't been acquired before and calls
- * \c agp_backend_acquire.
- */
-int drm_agp_acquire(struct drm_device * dev)
-{
- if (!dev->agp)
- return -ENODEV;
- if (dev->agp->acquired)
- return -EBUSY;
- if (!(dev->agp->bridge = agp_backend_acquire(dev->pdev)))
- return -ENODEV;
- dev->agp->acquired = 1;
- return 0;
-}
-
-EXPORT_SYMBOL(drm_agp_acquire);
-
-/**
- * Acquire the AGP device (ioctl).
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device hasn't been acquired before and calls
- * \c agp_backend_acquire.
- */
-int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- return drm_agp_acquire((struct drm_device *) file_priv->minor->dev);
-}
-
-/**
- * Release the AGP device.
- *
- * \param dev DRM device that is to release AGP.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device has been acquired and calls \c agp_backend_release.
- */
-int drm_agp_release(struct drm_device * dev)
-{
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
- agp_backend_release(dev->agp->bridge);
- dev->agp->acquired = 0;
- return 0;
-}
-EXPORT_SYMBOL(drm_agp_release);
-
-int drm_agp_release_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- return drm_agp_release(dev);
-}
-
-/**
- * Enable the AGP bus.
- *
- * \param dev DRM device that has previously acquired AGP.
- * \param mode Requested AGP mode.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device has been acquired but not enabled, and calls
- * \c agp_enable.
- */
-int drm_agp_enable(struct drm_device * dev, struct drm_agp_mode mode)
-{
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
-
- dev->agp->mode = mode.mode;
- agp_enable(dev->agp->bridge, mode.mode);
- dev->agp->enabled = 1;
- return 0;
-}
-
-EXPORT_SYMBOL(drm_agp_enable);
-
-int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_agp_mode *mode = data;
-
- return drm_agp_enable(dev, *mode);
-}
-
-/**
- * Allocate AGP memory.
- *
- * \param inode device inode.
- * \param file_priv file private pointer.
- * \param cmd command.
- * \param arg pointer to a drm_agp_buffer structure.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device is present and has been acquired, allocates the
- * memory via alloc_agp() and creates a drm_agp_mem entry for it.
- */
-int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request)
-{
- struct drm_agp_mem *entry;
- DRM_AGP_MEM *memory;
- unsigned long pages;
- u32 type;
-
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
- if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS)))
- return -ENOMEM;
-
- memset(entry, 0, sizeof(*entry));
-
- pages = (request->size + PAGE_SIZE - 1) / PAGE_SIZE;
- type = (u32) request->type;
- if (!(memory = drm_alloc_agp(dev, pages, type))) {
- drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
- return -ENOMEM;
- }
-
- entry->handle = (unsigned long)memory->key + 1;
- entry->memory = memory;
- entry->bound = 0;
- entry->pages = pages;
- list_add(&entry->head, &dev->agp->memory);
-
- request->handle = entry->handle;
- request->physical = memory->physical;
-
- return 0;
-}
-EXPORT_SYMBOL(drm_agp_alloc);
-
-
-int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_agp_buffer *request = data;
-
- return drm_agp_alloc(dev, request);
-}
-
-/**
- * Search for the AGP memory entry associated with a handle.
- *
- * \param dev DRM device structure.
- * \param handle AGP memory handle.
- * \return pointer to the drm_agp_mem structure associated with \p handle.
- *
- * Walks through drm_agp_head::memory until finding a matching handle.
- */
-static struct drm_agp_mem *drm_agp_lookup_entry(struct drm_device * dev,
- unsigned long handle)
-{
- struct drm_agp_mem *entry;
-
- list_for_each_entry(entry, &dev->agp->memory, head) {
- if (entry->handle == handle)
- return entry;
- }
- return NULL;
-}
-
-/**
- * Unbind AGP memory from the GATT (ioctl).
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg pointer to a drm_agp_binding structure.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device is present and acquired, looks-up the AGP memory
- * entry and passes it to the unbind_agp() function.
- */
-int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request)
-{
- struct drm_agp_mem *entry;
- int ret;
-
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
- if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
- return -EINVAL;
- if (!entry->bound)
- return -EINVAL;
- ret = drm_unbind_agp(entry->memory);
- if (ret == 0)
- entry->bound = 0;
- return ret;
-}
-EXPORT_SYMBOL(drm_agp_unbind);
-
-
-int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_agp_binding *request = data;
-
- return drm_agp_unbind(dev, request);
-}
-
-/**
- * Bind AGP memory into the GATT (ioctl)
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg pointer to a drm_agp_binding structure.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device is present and has been acquired and that no memory
- * is currently bound into the GATT. Looks-up the AGP memory entry and passes
- * it to bind_agp() function.
- */
-int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request)
-{
- struct drm_agp_mem *entry;
- int retcode;
- int page;
-
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
- if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
- return -EINVAL;
- if (entry->bound)
- return -EINVAL;
- page = (request->offset + PAGE_SIZE - 1) / PAGE_SIZE;
- if ((retcode = drm_bind_agp(entry->memory, page)))
- return retcode;
- entry->bound = dev->agp->base + (page << PAGE_SHIFT);
- DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n",
- dev->agp->base, entry->bound);
- return 0;
-}
-EXPORT_SYMBOL(drm_agp_bind);
-
-
-int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_agp_binding *request = data;
-
- return drm_agp_bind(dev, request);
-}
-
-/**
- * Free AGP memory (ioctl).
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg pointer to a drm_agp_buffer structure.
- * \return zero on success or a negative number on failure.
- *
- * Verifies the AGP device is present and has been acquired and looks up the
- * AGP memory entry. If the memory it's currently bound, unbind it via
- * unbind_agp(). Frees it via free_agp() as well as the entry itself
- * and unlinks from the doubly linked list it's inserted in.
- */
-int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request)
-{
- struct drm_agp_mem *entry;
-
- if (!dev->agp || !dev->agp->acquired)
- return -EINVAL;
- if (!(entry = drm_agp_lookup_entry(dev, request->handle)))
- return -EINVAL;
- if (entry->bound)
- drm_unbind_agp(entry->memory);
-
- list_del(&entry->head);
-
- drm_free_agp(entry->memory, entry->pages);
- drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
- return 0;
-}
-EXPORT_SYMBOL(drm_agp_free);
-
-
-
-int drm_agp_free_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_agp_buffer *request = data;
-
- return drm_agp_free(dev, request);
-}
-
-/**
- * Initialize the AGP resources.
- *
- * \return pointer to a drm_agp_head structure.
- *
- * Gets the drm_agp_t structure which is made available by the agpgart module
- * via the inter_module_* functions. Creates and initializes a drm_agp_head
- * structure.
- */
-struct drm_agp_head *drm_agp_init(struct drm_device *dev)
-{
- struct drm_agp_head *head = NULL;
-
- if (!(head = drm_alloc(sizeof(*head), DRM_MEM_AGPLISTS)))
- return NULL;
- memset((void *)head, 0, sizeof(*head));
- head->bridge = agp_find_bridge(dev->pdev);
- if (!head->bridge) {
- if (!(head->bridge = agp_backend_acquire(dev->pdev))) {
- drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS);
- return NULL;
- }
- agp_copy_info(head->bridge, &head->agp_info);
- agp_backend_release(head->bridge);
- } else {
- agp_copy_info(head->bridge, &head->agp_info);
- }
- if (head->agp_info.chipset == NOT_SUPPORTED) {
- drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS);
- return NULL;
- }
- INIT_LIST_HEAD(&head->memory);
- head->cant_use_aperture = head->agp_info.cant_use_aperture;
- head->page_mask = head->agp_info.page_mask;
- head->base = head->agp_info.aper_base;
- return head;
-}
-
-/** Calls agp_allocate_memory() */
-DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data * bridge,
- size_t pages, u32 type)
-{
- return agp_allocate_memory(bridge, pages, type);
-}
-
-/** Calls agp_free_memory() */
-int drm_agp_free_memory(DRM_AGP_MEM * handle)
-{
- if (!handle)
- return 0;
- agp_free_memory(handle);
- return 1;
-}
-
-/** Calls agp_bind_memory() */
-int drm_agp_bind_memory(DRM_AGP_MEM * handle, off_t start)
-{
- if (!handle)
- return -EINVAL;
- return agp_bind_memory(handle, start);
-}
-
-/** Calls agp_unbind_memory() */
-int drm_agp_unbind_memory(DRM_AGP_MEM * handle)
-{
- if (!handle)
- return -EINVAL;
- return agp_unbind_memory(handle);
-}
-
-#endif /* __OS_HAS_AGP */