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drm/amd/amdgpu: Support VM environments in amdgpu_ttm_access_memory() 

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tom St Denis 2017-09-14 08:57:26 -04:00 committed by Alex Deucher
parent e882064655
commit 97bae49c44
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1201,14 +1201,14 @@ static int amdgpu_ttm_access_memory(struct ttm_buffer_object *bo,
}
spin_lock_irqsave(&adev->mmio_idx_lock, flags);
WREG32(mmMM_INDEX, ((uint32_t)aligned_pos) | 0x80000000);
WREG32(mmMM_INDEX_HI, aligned_pos >> 31);
WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)aligned_pos) | 0x80000000);
WREG32_NO_KIQ(mmMM_INDEX_HI, aligned_pos >> 31);
if (!write || mask != 0xffffffff)
value = RREG32(mmMM_DATA);
value = RREG32_NO_KIQ(mmMM_DATA);
if (write) {
value &= ~mask;
value |= (*(uint32_t *)buf << shift) & mask;
WREG32(mmMM_DATA, value);
WREG32_NO_KIQ(mmMM_DATA, value);
}
spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
if (!write) {