[PATCH v4 07/16] drm/amdgpu: Modify GC register access from MMIO to RLCG in file soc15.c

Peng Ju Zhou PengJu.Zhou at amd.com
Fri May 14 07:26:57 UTC 2021


In SRIOV environment, KMD should access GC registers
with RLCG if GC indirect access flag enabled.

Signed-off-by: Peng Ju Zhou <PengJu.Zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/soc15.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 28e9f6b726a6..e1c5dfd1d771 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -632,7 +632,9 @@ void soc15_program_register_sequence(struct amdgpu_device *adev,
 		if (entry->and_mask == 0xffffffff) {
 			tmp = entry->or_mask;
 		} else {
-			tmp = RREG32(reg);
+			tmp = (entry->hwip == GC_HWIP) ?
+				RREG32_SOC15_IP(GC, reg) : RREG32(reg);
+
 			tmp &= ~(entry->and_mask);
 			tmp |= (entry->or_mask & entry->and_mask);
 		}
@@ -643,7 +645,8 @@ void soc15_program_register_sequence(struct amdgpu_device *adev,
 			reg == SOC15_REG_OFFSET(GC, 0, mmSH_MEM_CONFIG))
 			WREG32_RLC(reg, tmp);
 		else
-			WREG32(reg, tmp);
+			(entry->hwip == GC_HWIP) ?
+				WREG32_SOC15_IP(GC, reg, tmp) : WREG32(reg, tmp);
 
 	}
 
-- 
2.17.1



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