diff options
| author |   Dave Airlie <airlied@redhat.com> | 2016-10-24 15:37:48 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-10-26 16:48:01 +1000 |
| commit | 7cf321d118a825c1541b43ca45294126fd474efa (patch) | |
| tree | b9e21afa3815a4609610b16c6ae8402f363fb804 /drivers/gpu/drm/radeon/radeon_object.c | |
| parent | x86/io: add interface to reserve io memtype for a resource range. (v1.1) (diff) | |
| download | linux-dev-7cf321d118a825c1541b43ca45294126fd474efa.tar.xz linux-dev-7cf321d118a825c1541b43ca45294126fd474efa.zip | |
drm/drivers: add support for using the arch wc mapping API.
This fixes a regression in all these drivers since the cache
mode tracking was fixed for mixed mappings. It uses the new
arch API to add the VRAM range to the PAT mapping tracking
tables.
Fixes: 87744ab3832 (mm: fix cache mode tracking in vm_insert_mixed())
Reviewed-by: Christian König <christian.koenig@amd.com>.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_object.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index be30861afae9..41b72ce6613f 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -446,6 +446,10 @@ void radeon_bo_force_delete(struct radeon_device *rdev) int radeon_bo_init(struct radeon_device *rdev) { + /* reserve PAT memory space to WC for VRAM */ + arch_io_reserve_memtype_wc(rdev->mc.aper_base, + rdev->mc.aper_size); + /* Add an MTRR for the VRAM */ if (!rdev->fastfb_working) { rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base, @@ -463,6 +467,7 @@ void radeon_bo_fini(struct radeon_device *rdev) { radeon_ttm_fini(rdev); arch_phys_wc_del(rdev->mc.vram_mtrr); + arch_io_free_memtype_wc(rdev->mc.aper_base, rdev->mc.aper_size); } /* Returns how many bytes TTM can move per IB. |