drm/amdgpu:fix gmc_v9 vm fault process for SRIOV

for SRIOV we cannot use access register when in IRQ routine
with regular KIQ method

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index c29a477ea449..f1f4eac11400 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -137,20 +137,28 @@ static int gmc_v9_0_process_interrupt(struct amdgpu_device *adev,
         addr = (u64)entry->src_data[0] << 12;
         addr |= ((u64)entry->src_data[1] & 0xf) << 44;
 
-        if (entry->vm_id_src) {
-                status = RREG32(mmhub->vm_l2_pro_fault_status);
-                WREG32_P(mmhub->vm_l2_pro_fault_cntl, 1, ~1);
-        } else {
-                status = RREG32(gfxhub->vm_l2_pro_fault_status);
-                WREG32_P(gfxhub->vm_l2_pro_fault_cntl, 1, ~1);
-        }
+        if (!amdgpu_sriov_vf(adev)) {
+                if (entry->vm_id_src) {
+                        status = RREG32(mmhub->vm_l2_pro_fault_status);
+                        WREG32_P(mmhub->vm_l2_pro_fault_cntl, 1, ~1);
+                } else {
+                        status = RREG32(gfxhub->vm_l2_pro_fault_status);
+                        WREG32_P(gfxhub->vm_l2_pro_fault_cntl, 1, ~1);
+                }
 
-        DRM_ERROR("[%s]VMC page fault (src_id:%u ring:%u vm_id:%u pas_id:%u) "
+                DRM_ERROR("[%s]VMC page fault (src_id:%u ring:%u vm_id:%u pas_id:%u) "
                   "at page 0x%016llx from %d\n"
                   "VM_L2_PROTECTION_FAULT_STATUS:0x%08X\n",
                   entry->vm_id_src ? "mmhub" : "gfxhub",
                   entry->src_id, entry->ring_id, entry->vm_id, entry->pas_id,
                   addr, entry->client_id, status);
+        } else {
+                DRM_ERROR("[%s]VMC page fault (src_id:%u ring:%u vm_id:%u pas_id:%u) "
+                  "at page 0x%016llx from %d\n",
+                  entry->vm_id_src ? "mmhub" : "gfxhub",
+                  entry->src_id, entry->ring_id, entry->vm_id, entry->pas_id,
+                  addr, entry->client_id);
+        }
 
         return 0;
 }