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| author | Lijo Lazar <lijo.lazar@amd.com> | 2023-11-06 06:36:58 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-11-07 20:03:30 +0300 |
| commit | 0553eb9f33aa1a89a788682c78bd9747d41e65cb (patch) | |
| tree | 2fc1d779818d1ed6ec708ec52d38033106475d11 /drivers/gpu | |
| parent | 9c561ca2d3ca99606034880f62791e866af35ef9 (diff) | |
| download | linux-0553eb9f33aa1a89a788682c78bd9747d41e65cb.tar.xz | |
drm/amdgpu: Fix sdma 4.4.2 doorbell rptr/wptr init
Doorbell rptr/wptr can be set through multiple ways including direct
register initialization. Disable doorbell during hw_fini once the ring
is disabled so that during next module reload direct initialization
takes effect. Also, move the direct initialization after minor update is
set to 1 since rptr/wptr are reinitialized back to 0 which could be
lower than the previous doorbell value (ex: cases like module reload).
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Tested-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c index c46bc6aa4f48..bd65a62f8903 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c @@ -427,6 +427,7 @@ static void sdma_v4_4_2_inst_gfx_stop(struct amdgpu_device *adev, uint32_t inst_mask) { struct amdgpu_ring *sdma[AMDGPU_MAX_SDMA_INSTANCES]; + u32 doorbell_offset, doorbell; u32 rb_cntl, ib_cntl; int i, unset = 0; @@ -444,6 +445,18 @@ static void sdma_v4_4_2_inst_gfx_stop(struct amdgpu_device *adev, ib_cntl = RREG32_SDMA(i, regSDMA_GFX_IB_CNTL); ib_cntl = REG_SET_FIELD(ib_cntl, SDMA_GFX_IB_CNTL, IB_ENABLE, 0); WREG32_SDMA(i, regSDMA_GFX_IB_CNTL, ib_cntl); + + if (sdma[i]->use_doorbell) { + doorbell = RREG32_SDMA(i, regSDMA_GFX_DOORBELL); + doorbell_offset = RREG32_SDMA(i, regSDMA_GFX_DOORBELL_OFFSET); + + doorbell = REG_SET_FIELD(doorbell, SDMA_GFX_DOORBELL, ENABLE, 0); + doorbell_offset = REG_SET_FIELD(doorbell_offset, + SDMA_GFX_DOORBELL_OFFSET, + OFFSET, 0); + WREG32_SDMA(i, regSDMA_GFX_DOORBELL, doorbell); + WREG32_SDMA(i, regSDMA_GFX_DOORBELL_OFFSET, doorbell_offset); + } } } @@ -631,12 +644,6 @@ static void sdma_v4_4_2_gfx_resume(struct amdgpu_device *adev, unsigned int i) rb_cntl = sdma_v4_4_2_rb_cntl(ring, rb_cntl); WREG32_SDMA(i, regSDMA_GFX_RB_CNTL, rb_cntl); - /* Initialize the ring buffer's read and write pointers */ - WREG32_SDMA(i, regSDMA_GFX_RB_RPTR, 0); - WREG32_SDMA(i, regSDMA_GFX_RB_RPTR_HI, 0); - WREG32_SDMA(i, regSDMA_GFX_RB_WPTR, 0); - WREG32_SDMA(i, regSDMA_GFX_RB_WPTR_HI, 0); - /* set the wb address whether it's enabled or not */ WREG32_SDMA(i, regSDMA_GFX_RB_RPTR_ADDR_HI, upper_32_bits(adev->wb.gpu_addr + wb_offset) & 0xFFFFFFFF); @@ -654,6 +661,12 @@ static void sdma_v4_4_2_gfx_resume(struct amdgpu_device *adev, unsigned int i) /* before programing wptr to a less value, need set minor_ptr_update first */ WREG32_SDMA(i, regSDMA_GFX_MINOR_PTR_UPDATE, 1); + /* Initialize the ring buffer's read and write pointers */ + WREG32_SDMA(i, regSDMA_GFX_RB_RPTR, 0); + WREG32_SDMA(i, regSDMA_GFX_RB_RPTR_HI, 0); + WREG32_SDMA(i, regSDMA_GFX_RB_WPTR, 0); + WREG32_SDMA(i, regSDMA_GFX_RB_WPTR_HI, 0); + doorbell = RREG32_SDMA(i, regSDMA_GFX_DOORBELL); doorbell_offset = RREG32_SDMA(i, regSDMA_GFX_DOORBELL_OFFSET); |