Re: [PATCH] drm/amdgpu: fix scratch register access method in SRIOV

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Am 01.06.22 um 09:27 schrieb ZhenGuo Yin:
The scratch register should be accessed through MMIO instead of RLCG
in SRIOV, since it being used in RLCG register access function.

Fixes: 0e1314781b9c("drm/amdgpu: nuke dynamic gfx scratch reg allocation")

Maybe better but the register offset into a local constant then.

Apart from that looks good to me.

Regards,
Christian.

---
  drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index c5f46d264b23..8331e0c5e18e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -3784,7 +3784,7 @@ static int gfx_v10_0_ring_test_ring(struct amdgpu_ring *ring)
  	unsigned i;
  	int r;
- WREG32_SOC15(GC, 0, mmSCRATCH_REG0, 0xCAFEDEAD);
+	WREG32(SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG0), 0xCAFEDEAD);
  	r = amdgpu_ring_alloc(ring, 3);
  	if (r) {
  		DRM_ERROR("amdgpu: cp failed to lock ring %d (%d).\n",
@@ -3799,7 +3799,7 @@ static int gfx_v10_0_ring_test_ring(struct amdgpu_ring *ring)
  	amdgpu_ring_commit(ring);
for (i = 0; i < adev->usec_timeout; i++) {
-		tmp = RREG32_SOC15(GC, 0, mmSCRATCH_REG0);
+		tmp = RREG32(SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG0));
  		if (tmp == 0xDEADBEEF)
  			break;
  		if (amdgpu_emu_mode == 1)




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