diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c index 269002816109..3970a0ccb6a5 100644 --- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c +++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c @@ -155,6 +155,13 @@ static int vcn_v3_0_sw_init(void *handle) if (r) return r; + /* + * Note: doorbell assignment is fixed for SRIOV multiple VCN engines + * Formula: + * vcn_db_base = adev->doorbell_index.vcn.vcn_ring0_1 << 1; + * dec_ring_i = vcn_db_base + i * (adev->vcn.num_enc_rings + 1) + * enc_ring_i,j = vcn_db_base + i * (adev->vcn.num_enc_rings + 1) + 1 + j + */ if (amdgpu_sriov_vf(adev)) { vcn_doorbell_index = adev->doorbell_index.vcn.vcn_ring0_1; /* get DWORD offset */ @@ -192,9 +199,7 @@ static int vcn_v3_0_sw_init(void *handle) ring = &adev->vcn.inst[i].ring_dec; ring->use_doorbell = true; if (amdgpu_sriov_vf(adev)) { - ring->doorbell_index = vcn_doorbell_index; - /* NOTE: increment so next VCN engine use next DOORBELL DWORD */ - vcn_doorbell_index++; + ring->doorbell_index = vcn_doorbell_index + i * (adev->vcn.num_enc_rings + 1); } else { ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 8 * i; } @@ -216,9 +221,7 @@ static int vcn_v3_0_sw_init(void *handle) ring = &adev->vcn.inst[i].ring_enc[j]; ring->use_doorbell = true; if (amdgpu_sriov_vf(adev)) { - ring->doorbell_index = vcn_doorbell_index; - /* NOTE: increment so next VCN engine use next DOORBELL DWORD */ - vcn_doorbell_index++; + ring->doorbell_index = vcn_doorbell_index + i * (adev->vcn.num_enc_rings + 1) + 1 + j; } else { ring->doorbell_index = (adev->doorbell_index.vcn.vcn_ring0_1 << 1) + 2 + j + 8 * i; } |