drm/radeon: add fault decode function for SI (v2)

Helpful for debugging GPUVM errors as we can see what
hw block and page generated the fault in the log.

v2: simplify fault decoding

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h
index 12a20eb77d0c..2c8da27a929f 100644
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -367,6 +367,20 @@
 
 #define VM_CONTEXT1_PROTECTION_FAULT_ADDR               0x14FC
 #define VM_CONTEXT1_PROTECTION_FAULT_STATUS             0x14DC
+#define         PROTECTIONS_MASK                        (0xf << 0)
+#define         PROTECTIONS_SHIFT                       0
+                /* bit 0: range
+                 * bit 1: pde0
+                 * bit 2: valid
+                 * bit 3: read
+                 * bit 4: write
+                 */
+#define         MEMORY_CLIENT_ID_MASK                   (0xff << 12)
+#define         MEMORY_CLIENT_ID_SHIFT                  12
+#define         MEMORY_CLIENT_RW_MASK                   (1 << 24)
+#define         MEMORY_CLIENT_RW_SHIFT                  24
+#define         FAULT_VMID_MASK                         (0xf << 25)
+#define         FAULT_VMID_SHIFT                        25
 
 #define VM_INVALIDATE_REQUEST                           0x1478
 #define VM_INVALIDATE_RESPONSE                          0x147c