On 2/21/20 2:19 AM, Luben Tuikov wrote:
On 2020-02-19 08:53, Nirmoy Das wrote:
Calculate GPU offset in radeon_bo_gpu_offset without depending on bo->offset
Signed-off-by: Nirmoy Das nirmoy.das@amd.com Reviewed-and-tested-by: Christian König christian.koenig@amd.com
drivers/gpu/drm/radeon/radeon.h | 1 + drivers/gpu/drm/radeon/radeon_object.h | 16 +++++++++++++++- drivers/gpu/drm/radeon/radeon_ttm.c | 4 +--- 3 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 30e32adc1fc6..b7c3fb2bfb54 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -2828,6 +2828,7 @@ extern void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size extern void radeon_program_register_sequence(struct radeon_device *rdev, const u32 *registers, const u32 array_size); +struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev);
/*
- vm
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h index d23f2ed4126e..4d37571c7ff5 100644 --- a/drivers/gpu/drm/radeon/radeon_object.h +++ b/drivers/gpu/drm/radeon/radeon_object.h @@ -90,7 +90,21 @@ static inline void radeon_bo_unreserve(struct radeon_bo *bo) */ static inline u64 radeon_bo_gpu_offset(struct radeon_bo *bo) {
- return bo->tbo.offset;
- struct radeon_device *rdev;
- u64 start = 0;
- rdev = radeon_get_rdev(bo->tbo.bdev);
- switch(bo->tbo.mem.mem_type) {
LKCS wants a space after a keyword, "switch (" .
Thanks Luben, will fix that for both radeon and amdgpu.
- case TTM_PL_TT:
start = rdev->mc.gtt_start;break;- case TTM_PL_VRAM:
start = rdev->mc.vram_start;break;- }
Could this lookup have been parameterized by "mem_type" to be looked up by an index (possibly "mem_type") to result in something new like (pseudo-code): start = rdev->mc.mem_start_table[bo->tbo.mem.mem_type]; Where "mem_start_table" is a new table holding memory starts of particular memories. Then you don't need the switch-case.
That would look good but I am afraid, amdgpu_ttm_domain_start() and radeon_bo_gpu_offset() will be the only consumer of /mem_start_table./
I think it is not worth to do a intrusive change for this patch series.
Regards,
Nirmoy