drm/radeon: add PRIME support (v2)

This adds prime->fd and fd->prime support to radeon.
It passes the sg object to ttm and then populates
the gart entries using it.

Compile tested only.

v2: stub kmap + use new helpers + add reimporting

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index e62e56a57ee4..f0bb2b543b13 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -105,6 +105,11 @@ int radeon_mode_dumb_create(struct drm_file *file_priv,
 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
                              struct drm_device *dev,
                              uint32_t handle);
+struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
+                                        struct drm_gem_object *obj,
+                                        int flags);
+struct drm_gem_object *radeon_gem_prime_import(struct drm_device *dev,
+                                               struct dma_buf *dma_buf);
 
 #if defined(CONFIG_DEBUG_FS)
 int radeon_debugfs_init(struct drm_minor *minor);
@@ -333,7 +338,8 @@ static const struct file_operations radeon_driver_kms_fops = {
 static struct drm_driver kms_driver = {
         .driver_features =
             DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
-            DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM,
+            DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM |
+            DRIVER_PRIME,
         .dev_priv_size = 0,
         .load = radeon_driver_load_kms,
         .firstopen = radeon_driver_firstopen_kms,
@@ -368,6 +374,12 @@ static struct drm_driver kms_driver = {
         .dumb_map_offset = radeon_mode_dumb_mmap,
         .dumb_destroy = radeon_mode_dumb_destroy,
         .fops = &radeon_driver_kms_fops,
+
+        .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+        .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+        .gem_prime_export = radeon_gem_prime_export,
+        .gem_prime_import = radeon_gem_prime_import,
+
         .name = DRIVER_NAME,
         .desc = DRIVER_DESC,
         .date = DRIVER_DATE,