diff options
| author | Le Ma <le.ma@amd.com> | 2022-04-25 22:19:58 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 09:44:03 -0400 |
| commit | 20bedf1379b1d4b060e3f43661f35e5447d0cfed (patch) | |
| tree | b3adb3150e3e405f7ce3cea0975ac8533926d342 /drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | |
| parent | 36be0181eab50abbb043a087988e6c2bef59dd45 (diff) | |
drm/amdgpu: introduce new doorbell assignment table for GC 9.4.3
Four basic reasons as below to do the change:
1. number of ring expand a lot on GC 9.4.3, and adjustment on old
assignment cannot make each ring in a continuous doorbell space.
2. the SDMA doorbell index should not exceed 0x1FF on SDMA 4.2.2 due to
regDOORBELLx_CTRL_ENTRY.BIF_DOORBELLx_RANGE_OFFSET_ENTRY field width.
3. re-design the doorbell assignment and unify the calculation as
"start + ring/inst id" will make the code much concise.
4. only defining the START/END makes the table look simple
v2: (Lijo)
1. replace name
2. use num_inst_per_aid/sdma_doorbell_range instead of hardcoding
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c index a9fab8de29e8..52185b1d5d31 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c @@ -817,13 +817,7 @@ static int gfx_v9_4_3_compute_ring_init(struct amdgpu_device *adev, int ring_id, ring->ring_obj = NULL; ring->use_doorbell = true; - if (xcc_id >= 1) - ring->doorbell_index = - (adev->doorbell_index.xcc1_mec_ring0_start + - ring_id - adev->gfx.num_compute_rings) << 1; - else - ring->doorbell_index = - (adev->doorbell_index.mec_ring0 + ring_id) << 1; + ring->doorbell_index = (adev->doorbell_index.mec_ring0 + ring_id) << 1; ring->eop_gpu_addr = adev->gfx.mec.hpd_eop_gpu_addr + (ring_id * GFX9_MEC_HPD_SIZE); ring->vm_hub = AMDGPU_GFXHUB(xcc_id); |