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

Mika Kuoppala
2015-03-25T16:13:45Z

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.kuoppala@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;