diff options
| author | Sonny Jiang <sonny.jiang@amd.com> | 2021-01-31 09:44:51 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-02-24 09:28:55 -0500 |
| commit | b2576c3bf4ce9b992e1c1fbb1cffe0d606702621 (patch) | |
| tree | ad8130a04413ff727893286244dd0a3979bb8f11 /drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | |
| parent | 4588f7b7dd5f09e70b6e223490a0d054c3d64071 (diff) | |
drm/amdgpu/vcn3.0: add wptr/rptr reset/update for share memory
Because of dpg, the rptr/wptr need to be saved on fw shared memory,
and restore them back in RBC_RB_RPTR/WPTR in kernel at power up.
Signed-off-by: Sonny Jiang <sonny.jiang@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c index def583916294..b61d1ba1aa9d 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c @@ -238,7 +238,8 @@ static int vcn_v3_0_sw_init(void *handle) fw_shared = adev->vcn.inst[i].fw_shared_cpu_addr; fw_shared->present_flag_0 |= cpu_to_le32(AMDGPU_VCN_SW_RING_FLAG) | - cpu_to_le32(AMDGPU_VCN_MULTI_QUEUE_FLAG); + cpu_to_le32(AMDGPU_VCN_MULTI_QUEUE_FLAG) | + cpu_to_le32(AMDGPU_VCN_FW_SHARED_FLAG_0_RB); fw_shared->sw_ring.is_enabled = cpu_to_le32(DEC_SW_RING_ENABLED); } @@ -1074,7 +1075,13 @@ static int vcn_v3_0_start_dpg_mode(struct amdgpu_device *adev, int inst_idx, boo WREG32_SOC15(VCN, inst_idx, mmUVD_RBC_RB_WPTR, lower_32_bits(ring->wptr)); + /* Reset FW shared memory RBC WPTR/RPTR */ + fw_shared->rb.rptr = 0; + fw_shared->rb.wptr = lower_32_bits(ring->wptr); + + /*resetting done, fw can check RB ring */ fw_shared->multi_queue.decode_queue_mode &= cpu_to_le32(~FW_QUEUE_RING_RESET); + /* Unstall DPG */ WREG32_P(SOC15_REG_OFFSET(VCN, inst_idx, mmUVD_POWER_STATUS), 0, ~UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK); @@ -1239,9 +1246,11 @@ static int vcn_v3_0_start(struct amdgpu_device *adev) /* Initialize the ring buffer's read and write pointers */ WREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR, 0); + WREG32_SOC15(VCN, i, mmUVD_SCRATCH2, 0); ring->wptr = RREG32_SOC15(VCN, i, mmUVD_RBC_RB_RPTR); WREG32_SOC15(VCN, i, mmUVD_RBC_RB_WPTR, lower_32_bits(ring->wptr)); + fw_shared->rb.wptr = lower_32_bits(ring->wptr); fw_shared->multi_queue.decode_queue_mode &= cpu_to_le32(~FW_QUEUE_RING_RESET); fw_shared->multi_queue.encode_generalpurpose_queue_mode |= cpu_to_le32(FW_QUEUE_RING_RESET); @@ -1662,6 +1671,10 @@ static int vcn_v3_0_pause_dpg_mode(struct amdgpu_device *adev, WREG32_SOC15(VCN, inst_idx, mmUVD_RB_WPTR2, lower_32_bits(ring->wptr)); fw_shared->multi_queue.encode_lowlatency_queue_mode &= cpu_to_le32(~FW_QUEUE_RING_RESET); + /* restore wptr/rptr with pointers saved in FW shared memory*/ + WREG32_SOC15(VCN, inst_idx, mmUVD_RBC_RB_RPTR, fw_shared->rb.rptr); + WREG32_SOC15(VCN, inst_idx, mmUVD_RBC_RB_WPTR, fw_shared->rb.wptr); + /* Unstall DPG */ WREG32_P(SOC15_REG_OFFSET(VCN, inst_idx, mmUVD_POWER_STATUS), 0, ~UVD_POWER_STATUS__STALL_DPG_POWER_UP_MASK); @@ -1721,6 +1734,15 @@ static uint64_t vcn_v3_0_dec_ring_get_wptr(struct amdgpu_ring *ring) static void vcn_v3_0_dec_ring_set_wptr(struct amdgpu_ring *ring) { struct amdgpu_device *adev = ring->adev; + volatile struct amdgpu_fw_shared *fw_shared; + + if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) { + /*whenever update RBC_RB_WPTR, we save the wptr in shared rb.wptr and scratch2 */ + fw_shared = adev->vcn.inst[ring->me].fw_shared_cpu_addr; + fw_shared->rb.wptr = lower_32_bits(ring->wptr); + WREG32_SOC15(VCN, ring->me, mmUVD_SCRATCH2, + lower_32_bits(ring->wptr)); + } if (ring->use_doorbell) { adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr); |