[Intel-gfx] [PATCH 2/3] tools/intel_error_decode: Add decodings for FAULT_REG

[Mika Kuoppala]

Add decodings for FAULT_REG

v2: fix fault encodings and ignore addr type for gen8+ (Michel)
    fix engine mask

Signed-off-by: Mika Kuoppala <mika.kuopp...@intel.com>
---
 tools/intel_error_decode.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/tools/intel_error_decode.c b/tools/intel_error_decode.c
index fb4a2a4..5fccefa 100644
--- a/tools/intel_error_decode.c
+++ b/tools/intel_error_decode.c
@@ -380,6 +380,44 @@ print_fence(unsigned int devid, uint64_t fence)
        }
 }
 
+static void
+print_fault_reg(unsigned devid, uint32_t reg)
+{
+       const char *gen7_types[] = { "Page",
+                                    "Invalid PD",
+                                    "Unloaded PD",
+                                    "Invalid and Unloaded PD" };
+
+       const char *gen8_types[] = { "PTE",
+                                    "PDE",
+                                    "PDPE",
+                                    "PML4E" };
+
+       const char *engine[] = { "GFX", "MFX0", "MFX1", "VEBX",
+                                "BLT", "Unknown", "Unknown", "Unknown" };
+
+       if (intel_gen(devid) < 7)
+               return;
+
+       if (reg & (1 << 0))
+               printf("    Valid\n");
+       else
+               return;
+
+       if (intel_gen(devid) < 8)
+               printf("    %s Fault (%s)\n", gen7_types[reg >> 1 & 0x3],
+                      reg & (1 << 11) ? "GGTT" : "PPGTT");
+       else
+               printf("    Invalid %s Fault\n", gen8_types[reg >> 1 & 0x3]);
+
+       if (intel_gen(devid) < 8)
+               printf("    Address 0x%08x\n", reg & ~((1 << 12)-1));
+       else
+               printf("    Engine %s\n", engine[reg >> 12 & 0x7]);
+
+       printf("    Source ID %d\n", reg >> 3 & 0xff);
+}
+
 #define MAX_RINGS 10 /* I really hope this never... */
 uint32_t head[MAX_RINGS];
 int head_ndx = 0;
@@ -520,6 +558,10 @@ read_data_file(FILE *file)
                        if (matched == 2)
                                print_fence(devid, fence);
 
+                       matched = sscanf(line, "  FAULT_REG: 0x%08x\n", &reg);
+                       if (matched == 1 && reg)
+                               print_fault_reg(devid, reg);
+
                        continue;
                }
 
-- 
1.9.1

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