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drm/amdgpu: fix scratch register access method in SRIOV

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The scratch register should be accessed through MMIO instead of RLCG
in SRIOV, since it being used in RLCG register access function.

Fixes: d54762cc3e6a ("drm/amdgpu: nuke dynamic gfx scratch reg allocation")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Gavin Wan <Gavin.Wan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Gavin Wan 2022-07-18 15:30:51 -04:00 committed by Alex Deucher
parent 86bd6706c4
commit dc2b9c70eb
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -987,23 +987,23 @@ static void gfx_v9_0_wait_reg_mem(struct amdgpu_ring *ring, int eng_sel,
static int gfx_v9_0_ring_test_ring(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
uint32_t scratch = SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG0);
uint32_t tmp = 0;
unsigned i;
int r;
WREG32_SOC15(GC, 0, mmSCRATCH_REG0, 0xCAFEDEAD);
WREG32(scratch, 0xCAFEDEAD);
r = amdgpu_ring_alloc(ring, 3);
if (r)
return r;
amdgpu_ring_write(ring, PACKET3(PACKET3_SET_UCONFIG_REG, 1));
amdgpu_ring_write(ring, SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG0) -
PACKET3_SET_UCONFIG_REG_START);
amdgpu_ring_write(ring, scratch - PACKET3_SET_UCONFIG_REG_START);
amdgpu_ring_write(ring, 0xDEADBEEF);
amdgpu_ring_commit(ring);
for (i = 0; i < adev->usec_timeout; i++) {
tmp = RREG32_SOC15(GC, 0, mmSCRATCH_REG0);
tmp = RREG32(scratch);
if (tmp == 0xDEADBEEF)
break;
udelay(1);