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>
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 0f6aee8..c94a225 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -611,10 +611,18 @@
struct radeon_ttm_tt *gtt = (void *)ttm;
unsigned i;
int r;
+ bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
if (ttm->state != tt_unpopulated)
return 0;
+ if (slave && ttm->sg) {
+ drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
+ gtt->ttm.dma_address, ttm->num_pages);
+ ttm->state = tt_unbound;
+ return 0;
+ }
+
rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
if (rdev->flags & RADEON_IS_AGP) {
@@ -655,6 +663,10 @@
struct radeon_device *rdev;
struct radeon_ttm_tt *gtt = (void *)ttm;
unsigned i;
+ bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
+
+ if (slave)
+ return;
rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
@@ -726,8 +738,8 @@
return r;
}
r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
- RADEON_GEM_DOMAIN_VRAM,
- &rdev->stollen_vga_memory);
+ RADEON_GEM_DOMAIN_VRAM,
+ NULL, &rdev->stollen_vga_memory);
if (r) {
return r;
}