drm/amdgpu: add burst_nop flag for sdma

The burst NOP is supported for SDMA when feature_version is >= 20.

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

4 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index b66938dbb5cf..34812eccd7d0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1708,6 +1708,7 @@ struct amdgpu_sdma {
         uint32_t                feature_version;
 
         struct amdgpu_ring      ring;
+        bool                    burst_nop;
 };
 
 /*
diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
index c1e782952bd7..cc909c9cee63 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
@@ -501,6 +501,8 @@ static int cik_sdma_load_microcode(struct amdgpu_device *adev)
                 fw_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
                 adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
                 adev->sdma[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
+                if (adev->sdma[i].feature_version >= 20)
+                        adev->sdma[i].burst_nop = true;
                 fw_data = (const __le32 *)
                         (adev->sdma[i].fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
                 WREG32(mmSDMA0_UCODE_ADDR + sdma_offsets[i], 0);
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
index 2f3948c09081..2457bf3e3a1e 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
@@ -146,6 +146,8 @@ static int sdma_v2_4_init_microcode(struct amdgpu_device *adev)
                 hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma[i].fw->data;
                 adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
                 adev->sdma[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
+                if (adev->sdma[i].feature_version >= 20)
+                        adev->sdma[i].burst_nop = true;
 
                 if (adev->firmware.smu_load) {
                         info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA0 + i];
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
index a9d9607e8d91..70b2f03c5712 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
@@ -218,6 +218,8 @@ static int sdma_v3_0_init_microcode(struct amdgpu_device *adev)
                 hdr = (const struct sdma_firmware_header_v1_0 *)adev->sdma[i].fw->data;
                 adev->sdma[i].fw_version = le32_to_cpu(hdr->header.ucode_version);
                 adev->sdma[i].feature_version = le32_to_cpu(hdr->ucode_feature_version);
+                if (adev->sdma[i].feature_version >= 20)
+                        adev->sdma[i].burst_nop = true;
 
                 if (adev->firmware.smu_load) {
                         info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA0 + i];