From: Monk Liu <Monk.Liu@xxxxxxx>
Rework sdma init to support SR-IOV.
Signed-off-by: Monk Liu <Monk.Liu at amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Acked-by: Christian K�¶nig <christian.koenig at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index b460e00..ee3b4a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -522,6 +522,7 @@ static int sdma_v4_0_gfx_resume(struct amdgpu_device *adev)
u32 wb_offset;
u32 doorbell;
u32 doorbell_offset;
+ u32 temp;
int i,r;
for (i = 0; i < adev->sdma.num_instances; i++) {
@@ -576,6 +577,16 @@ static int sdma_v4_0_gfx_resume(struct amdgpu_device *adev)
WREG32(sdma_v4_0_get_reg_offset(i, mmSDMA0_GFX_DOORBELL_OFFSET), doorbell_offset);
nbio_v6_1_sdma_doorbell_range(adev, i, ring->use_doorbell, ring->doorbell_index);
+ /* set utc l1 enable flag always to 1 */
+ temp = RREG32(sdma_v4_0_get_reg_offset(i, mmSDMA0_CNTL));
+ temp = REG_SET_FIELD(temp, SDMA0_CNTL, UTC_L1_ENABLE, 1);
+ WREG32(sdma_v4_0_get_reg_offset(i, mmSDMA0_CNTL), temp);
+
+ /* unhalt engine */
+ temp = RREG32(sdma_v4_0_get_reg_offset(i, mmSDMA0_F32_CNTL));
+ temp = REG_SET_FIELD(temp, SDMA0_F32_CNTL, HALT, 0);
+ WREG32(sdma_v4_0_get_reg_offset(i, mmSDMA0_F32_CNTL), temp);
+
/* enable DMA RB */
rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_ENABLE, 1);
WREG32(sdma_v4_0_get_reg_offset(i, mmSDMA0_GFX_RB_CNTL), rb_cntl);
@@ -690,6 +701,15 @@ static int sdma_v4_0_start(struct amdgpu_device *adev)
{
int r;
+ if (amdgpu_sriov_vf(adev)) {
+ /* disable RB and halt engine */
+ sdma_v4_0_enable(adev, false);
+
+ /* set RB registers */
+ r = sdma_v4_0_gfx_resume(adev);
+ return r;
+ }
+
if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
DRM_INFO("Loading via direct write\n");
r = sdma_v4_0_load_microcode(adev);
--
2.5.5
