To properly verify the driver->doorbell->GuC functionality, validation
needs to know how the driver has assigned the doorbell cache lines and
registers, so make them visible through debugfs.
Signed-off-by: Dave Gordon <david.s.gor...@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index be4bcdc..87a9f3e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2488,6 +2488,7 @@ static int i915_guc_info(struct seq_file *m, void *data)
struct i915_guc_client client = {};
struct intel_engine_cs *engine;
u64 total = 0;
+ int i;
if (!HAS_GUC_SCHED(dev_priv))
return 0;
@@ -2502,6 +2503,13 @@ static int i915_guc_info(struct seq_file *m, void *data)
mutex_unlock(&dev->struct_mutex);
+ seq_printf(m, "Doorbell map:\n");
+ for (i = 0; i < BITS_TO_LONGS(GUC_MAX_DOORBELLS) - 3; i += 4)
+ seq_printf(m, "\t%016lx %016lx %016lx %016lx\n",
+ guc.doorbell_bitmap[i], guc.doorbell_bitmap[i+1],
+ guc.doorbell_bitmap[i+2], guc.doorbell_bitmap[i+3]);
+ seq_printf(m, "Doorbell next cacheline: 0x%x\n\n", guc.db_cacheline);
+
seq_printf(m, "GuC total action count: %llu\n", guc.action_count);
seq_printf(m, "GuC action failure count: %u\n", guc.action_fail);
seq_printf(m, "GuC last action command: 0x%x\n", guc.action_cmd);
--
1.9.1
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