diff options
Diffstat (limited to 'drivers/gpu/drm/drm_agpsupport.c')
| -rw-r--r-- | drivers/gpu/drm/drm_agpsupport.c | 128 |
1 files changed, 89 insertions, 39 deletions
diff --git a/drivers/gpu/drm/drm_agpsupport.c b/drivers/gpu/drm/drm_agpsupport.c index aefa5ac4c0b..dde205cef38 100644 --- a/drivers/gpu/drm/drm_agpsupport.c +++ b/drivers/gpu/drm/drm_agpsupport.c @@ -31,11 +31,14 @@ * OTHER DEALINGS IN THE SOFTWARE. */ -#include "drmP.h" +#include <drm/drmP.h> #include <linux/module.h> +#include <linux/slab.h> #if __OS_HAS_AGP +#include <asm/agp.h> + /** * Get AGP information. * @@ -50,7 +53,7 @@ */ int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info) { - DRM_AGP_KERN *kern; + struct agp_kern_info *kern; if (!dev->agp || !dev->agp->acquired) return -EINVAL; @@ -190,26 +193,24 @@ int drm_agp_enable_ioctl(struct drm_device *dev, void *data, * \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. + * memory via agp_allocate_memory() 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; + struct agp_memory *memory; unsigned long pages; u32 type; if (!dev->agp || !dev->agp->acquired) return -EINVAL; - if (!(entry = drm_alloc(sizeof(*entry), DRM_MEM_AGPLISTS))) + if (!(entry = kzalloc(sizeof(*entry), GFP_KERNEL))) 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); + if (!(memory = agp_allocate_memory(dev->agp->bridge, pages, type))) { + kfree(entry); return -ENOMEM; } @@ -367,7 +368,7 @@ int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request) list_del(&entry->head); drm_free_agp(entry->memory, entry->pages); - drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS); + kfree(entry); return 0; } EXPORT_SYMBOL(drm_agp_free); @@ -390,18 +391,20 @@ int drm_agp_free_ioctl(struct drm_device *dev, void *data, * 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. + * + * Note that final cleanup of the kmalloced structure is directly done in + * drm_pci_agp_destroy. */ 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))) + if (!(head = kzalloc(sizeof(*head), GFP_KERNEL))) 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); + kfree(head); return NULL; } agp_copy_info(head->bridge, &head->agp_info); @@ -410,7 +413,7 @@ struct drm_agp_head *drm_agp_init(struct drm_device *dev) agp_copy_info(head->bridge, &head->agp_info); } if (head->agp_info.chipset == NOT_SUPPORTED) { - drm_free(head, sizeof(*head), DRM_MEM_AGPLISTS); + kfree(head); return NULL; } INIT_LIST_HEAD(&head->memory); @@ -420,36 +423,83 @@ struct drm_agp_head *drm_agp_init(struct drm_device *dev) return head; } -/** Calls agp_allocate_memory() */ -DRM_AGP_MEM *drm_agp_allocate_memory(struct agp_bridge_data * bridge, - size_t pages, u32 type) +/** + * drm_agp_clear - Clear AGP resource list + * @dev: DRM device + * + * Iterate over all AGP resources and remove them. But keep the AGP head + * intact so it can still be used. It is safe to call this if AGP is disabled or + * was already removed. + * + * If DRIVER_MODESET is active, nothing is done to protect the modesetting + * resources from getting destroyed. Drivers are responsible of cleaning them up + * during device shutdown. + */ +void drm_agp_clear(struct drm_device *dev) { - return agp_allocate_memory(bridge, pages, type); -} + struct drm_agp_mem *entry, *tempe; -/** Calls agp_free_memory() */ -int drm_agp_free_memory(DRM_AGP_MEM * handle) -{ - if (!handle) - return 0; - agp_free_memory(handle); - return 1; -} + if (!dev->agp) + return; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return; + + list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { + if (entry->bound) + drm_unbind_agp(entry->memory); + drm_free_agp(entry->memory, entry->pages); + kfree(entry); + } + INIT_LIST_HEAD(&dev->agp->memory); -/** 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); + if (dev->agp->acquired) + drm_agp_release(dev); + + dev->agp->acquired = 0; + dev->agp->enabled = 0; } -/** Calls agp_unbind_memory() */ -int drm_agp_unbind_memory(DRM_AGP_MEM * handle) +/** + * Binds a collection of pages into AGP memory at the given offset, returning + * the AGP memory structure containing them. + * + * No reference is held on the pages during this time -- it is up to the + * caller to handle that. + */ +struct agp_memory * +drm_agp_bind_pages(struct drm_device *dev, + struct page **pages, + unsigned long num_pages, + uint32_t gtt_offset, + u32 type) { - if (!handle) - return -EINVAL; - return agp_unbind_memory(handle); + struct agp_memory *mem; + int ret, i; + + DRM_DEBUG("\n"); + + mem = agp_allocate_memory(dev->agp->bridge, num_pages, + type); + if (mem == NULL) { + DRM_ERROR("Failed to allocate memory for %ld pages\n", + num_pages); + return NULL; + } + + for (i = 0; i < num_pages; i++) + mem->pages[i] = pages[i]; + mem->page_count = num_pages; + + mem->is_flushed = true; + ret = agp_bind_memory(mem, gtt_offset / PAGE_SIZE); + if (ret != 0) { + DRM_ERROR("Failed to bind AGP memory: %d\n", ret); + agp_free_memory(mem); + return NULL; + } + + return mem; } +EXPORT_SYMBOL(drm_agp_bind_pages); -#endif /* __OS_HAS_AGP */ +#endif /* __OS_HAS_AGP */ |