diff options
Diffstat (limited to 'drivers/char/drm/drm_agpsupport.c')
| -rw-r--r-- | drivers/char/drm/drm_agpsupport.c | 455 |
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 */ |