diff options
| -rw-r--r-- | drivers/gpu/drm/drm_gem_vram_helper.c | 98 | ||||
| -rw-r--r-- | include/drm/drm_gem_vram_helper.h | 20 |
2 files changed, 118 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index aba073279ca2..15c6193e4985 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -2,6 +2,7 @@ #include <drm/drm_gem_vram_helper.h> #include <drm/drm_mode.h> +#include <drm/drm_prime.h> #include <drm/ttm/ttm_page_alloc.h> /** @@ -571,3 +572,100 @@ int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file, return 0; } EXPORT_SYMBOL(drm_gem_vram_driver_dumb_mmap_offset); + +/* + * PRIME helpers for struct drm_driver + */ + +/** + * drm_gem_vram_driver_gem_prime_pin() - \ + Implements &struct drm_driver.gem_prime_pin + * @gem: The GEM object to pin + * + * Returns: + * 0 on success, or + * a negative errno code otherwise. + */ +int drm_gem_vram_driver_gem_prime_pin(struct drm_gem_object *gem) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem); + + return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM); +} +EXPORT_SYMBOL(drm_gem_vram_driver_gem_prime_pin); + +/** + * drm_gem_vram_driver_gem_prime_unpin() - \ + Implements &struct drm_driver.gem_prime_unpin + * @gem: The GEM object to unpin + */ +void drm_gem_vram_driver_gem_prime_unpin(struct drm_gem_object *gem) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem); + + drm_gem_vram_unpin(gbo); +} +EXPORT_SYMBOL(drm_gem_vram_driver_gem_prime_unpin); + +/** + * drm_gem_vram_driver_gem_prime_vmap() - \ + Implements &struct drm_driver.gem_prime_vmap + * @gem: The GEM object to map + * + * Returns: + * The buffers virtual address on success, or + * NULL otherwise. + */ +void *drm_gem_vram_driver_gem_prime_vmap(struct drm_gem_object *gem) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem); + int ret; + void *base; + + ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM); + if (ret) + return NULL; + base = drm_gem_vram_kmap(gbo, true, NULL); + if (IS_ERR(base)) { + drm_gem_vram_unpin(gbo); + return NULL; + } + return base; +} +EXPORT_SYMBOL(drm_gem_vram_driver_gem_prime_vmap); + +/** + * drm_gem_vram_driver_gem_prime_vunmap() - \ + Implements &struct drm_driver.gem_prime_vunmap + * @gem: The GEM object to unmap + * @vaddr: The mapping's base address + */ +void drm_gem_vram_driver_gem_prime_vunmap(struct drm_gem_object *gem, + void *vaddr) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem); + + drm_gem_vram_kunmap(gbo); + drm_gem_vram_unpin(gbo); +} +EXPORT_SYMBOL(drm_gem_vram_driver_gem_prime_vunmap); + +/** + * drm_gem_vram_driver_gem_prime_mmap() - \ + Implements &struct drm_driver.gem_prime_mmap + * @gem: The GEM object to map + * @vma: The VMA describing the mapping + * + * Returns: + * 0 on success, or + * a negative errno code otherwise. + */ +int drm_gem_vram_driver_gem_prime_mmap(struct drm_gem_object *gem, + struct vm_area_struct *vma) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(gem); + + gbo->gem.vma_node.vm_node.start = gbo->bo.vma_node.vm_node.start; + return drm_gem_prime_mmap(gem, vma); +} +EXPORT_SYMBOL(drm_gem_vram_driver_gem_prime_mmap); diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 8e54f721c9f8..9a8bd98b623f 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -116,5 +116,25 @@ void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem); int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, uint32_t handle, uint64_t *offset); +/* + * PRIME helpers for struct drm_driver + */ + +int drm_gem_vram_driver_gem_prime_pin(struct drm_gem_object *obj); +void drm_gem_vram_driver_gem_prime_unpin(struct drm_gem_object *obj); +void *drm_gem_vram_driver_gem_prime_vmap(struct drm_gem_object *obj); +void drm_gem_vram_driver_gem_prime_vunmap(struct drm_gem_object *obj, + void *vaddr); +int drm_gem_vram_driver_gem_prime_mmap(struct drm_gem_object *obj, + struct vm_area_struct *vma); + +#define DRM_GEM_VRAM_DRIVER_PRIME \ + .gem_prime_export = drm_gem_prime_export, \ + .gem_prime_import = drm_gem_prime_import, \ + .gem_prime_pin = drm_gem_vram_driver_gem_prime_pin, \ + .gem_prime_unpin = drm_gem_vram_driver_gem_prime_unpin, \ + .gem_prime_vmap = drm_gem_vram_driver_gem_prime_vmap, \ + .gem_prime_vunmap = drm_gem_vram_driver_gem_prime_vunmap, \ + .gem_prime_mmap = drm_gem_vram_driver_gem_prime_mmap #endif |