From: John Harrison <John.C.Harrison@xxxxxxxxx>
Error captures are tagged with an 'ecode'. This is a pseduo-unique magic
number that is meant to distinguish similar seeming bugs with
different underlying signatures. It is a combination of two ring state
registers. Unfortunately, the register state being used is only valid
in execlist mode. In GuC mode, the register state exists in a separate
list of arbitrary register address/value pairs rather than the named
entry structure. So, search through that list to find the two exciting
registers and copy them over to the structure's named members.
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
Fixes: a6f0f9cf330a ("drm/i915/guc: Plumb GuC-capture into gpu_coredump")
Cc: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Cc: Aravind Iddamsetty <aravind.iddamsetty@xxxxxxxxx>
Cc: Michael Cheng <michael.cheng@xxxxxxxxx>
Cc: Matthew Brost <matthew.brost@xxxxxxxxx>
Cc: Bruce Chang <yu.bruce.chang@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
---
.../gpu/drm/i915/gt/uc/intel_guc_capture.c | 22 +++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
index 1c1b85073b4bd..4e0b06ceed96d 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c
@@ -1571,6 +1571,27 @@ int intel_guc_capture_print_engine_node(struct drm_i915_error_state_buf *ebuf,
#endif //CONFIG_DRM_I915_CAPTURE_ERROR
+static void guc_capture_find_ecode(struct intel_engine_coredump *ee)
+{
+ struct gcap_reg_list_info *reginfo;
+ struct guc_mmio_reg *regs;
+ i915_reg_t reg_ipehr = RING_IPEHR(0);
+ i915_reg_t reg_instdone = RING_INSTDONE(0);
+ int i;
+
+ if (!ee->guc_capture_node)
+ return;
+
+ reginfo = ee->guc_capture_node->reginfo + GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE;
+ regs = reginfo->regs;
+ for (i = 0; i < reginfo->num_regs; i++) {
+ if (regs[i].offset == reg_ipehr.reg)
+ ee->ipehr = regs[i].value;
+ if (regs[i].offset == reg_instdone.reg)
+ ee->instdone.instdone = regs[i].value;
+ }
+}
+
void intel_guc_capture_free_node(struct intel_engine_coredump *ee)
{
if (!ee || !ee->guc_capture_node)
@@ -1612,6 +1633,7 @@ void intel_guc_capture_get_matching_node(struct intel_gt *gt,
list_del(&n->link);
ee->guc_capture_node = n;
ee->capture = guc->capture;
+ guc_capture_find_ecode(ee);
return;
}
}
--
2.39.1
