Print the GuC captured error state register list (string names and values) when gpu_coredump_state printout is invoked via the i915 debugfs for flushing the gpu error-state that was captured prior.
Since GuC could have reported multiple engine register dumps in a single notification event, parse the captured data (appearing as a stream of structures) to identify each dump as a different 'engine-capture-group-output'.
Finally, for each 'engine-capture-group-output' that is found, verify if the engine register dump corresponds to the engine_coredump content that was previously populated by the i915_gpu_coredump function. That function would have copied the context's vma's including the bacth buffer during the G2H-context-reset notification that occurred earlier. Perform this verification check by comparing guc_id, lrca and engine- instance obtained from the 'engine-capture-group-output' vs a copy of that same info taken during i915_gpu_coredump. If they match, then print those vma's as well (such as the batch buffers).
NOTE: the output format was verified using the gem_exec_capture IGT test.
Signed-off-by: Alan Previn alan.previn.teres.alexis@intel.com Reviewed-by: Umesh Nerlige Ramappa umesh.nerlige.ramappa@intel.com --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 4 +- drivers/gpu/drm/i915/gt/uc/intel_guc.h | 3 + .../gpu/drm/i915/gt/uc/intel_guc_capture.c | 161 ++++++++++++++++++ .../gpu/drm/i915/gt/uc/intel_guc_capture.h | 2 +- .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 6 +- drivers/gpu/drm/i915/i915_debugfs.c | 1 + drivers/gpu/drm/i915/i915_gpu_error.c | 16 +- drivers/gpu/drm/i915/i915_gpu_error.h | 5 + 8 files changed, 183 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index a900fbb21884..98b61ff13c95 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -1714,9 +1714,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine, drm_printf(m, "\tIPEHR: 0x%08x\n", ENGINE_READ(engine, IPEHR)); }
- if (intel_engine_uses_guc(engine)) { - /* nothing to print yet */ - } else if (HAS_EXECLISTS(dev_priv)) { + if (HAS_EXECLISTS(dev_priv) && !intel_engine_uses_guc(engine)) { struct i915_request * const *port, *rq; const u32 *hws = &engine->status_page.addr[I915_HWS_CSB_BUF0_INDEX]; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h index de32367831c6..4e431c14b118 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h @@ -438,6 +438,9 @@ int intel_guc_engine_failure_process_msg(struct intel_guc *guc, int intel_guc_error_capture_process_msg(struct intel_guc *guc, const u32 *msg, u32 len);
+struct intel_engine_cs * +intel_guc_lookup_engine(struct intel_guc *guc, u8 guc_class, u8 instance); + void intel_guc_find_hung_context(struct intel_engine_cs *engine);
int intel_guc_global_policies_update(struct intel_guc *guc); 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 a4f44755d3d3..eac2dc4bdfae 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c @@ -767,6 +767,21 @@ intel_guc_capture_output_min_size_est(struct intel_guc *guc) * intel_engine_coredump struct (if the context and * engine of the event notification matches a node * in the link list). + * + * User Sysfs / Debugfs + * -------------------- + * --> i915_gpu_coredump_copy_to_buffer-> + * L--> err_print_to_sgl --> err_print_gt + * L--> error_print_guc_captures + * L--> intel_guc_capture_print_node prints the + * register lists values of the attached node + * on the error-engine-dump being reported. + * L--> i915_reset_error_state ... -->__i915_gpu_coredump_free + * L--> ... cleanup_gt --> + * L--> intel_guc_capture_free_node returns the + * capture-output-node back to the internal + * cachelist for reuse. + * */
static int guc_capture_buf_cnt(struct __guc_capture_bufstate *buf) @@ -1384,9 +1399,155 @@ static void __guc_capture_process_output(struct intel_guc *guc)
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
+static const char * +guc_capture_reg_to_str(const struct intel_guc *guc, u32 owner, u32 type, + u32 class, u32 id, u32 offset, u32 *is_ext) +{ + const struct __guc_mmio_reg_descr_group *reglists = guc->capture->reglists; + struct __guc_mmio_reg_descr_group *extlists = guc->capture->extlists; + const struct __guc_mmio_reg_descr_group *match; + struct __guc_mmio_reg_descr_group *matchext; + int j; + + *is_ext = 0; + if (!reglists) + return NULL; + + match = guc_capture_get_one_list(reglists, owner, type, id); + if (!match) + return NULL; + + for (j = 0; j < match->num_regs; ++j) { + if (offset == match->list[j].reg.reg) + return match->list[j].regname; + } + if (extlists) { + matchext = guc_capture_get_one_ext_list(extlists, owner, type, id); + if (!matchext) + return NULL; + for (j = 0; j < matchext->num_regs; ++j) { + if (offset == matchext->extlist[j].reg.reg) { + *is_ext = 1; + return matchext->extlist[j].regname; + } + } + } + + return NULL; +} + +#ifdef CONFIG_DRM_I915_DEBUG_GUC +#define __out(a, ...) \ + do { \ + drm_warn((&(a)->i915->drm), __VA_ARGS__); \ + i915_error_printf((a), __VA_ARGS__); \ + } while (0) +#else +#define __out(a, ...) \ + i915_error_printf(a, __VA_ARGS__) +#endif + +#define GCAP_PRINT_INTEL_ENG_INFO(ebuf, eng) \ + do { \ + __out(ebuf, " i915-Eng-Name: %s command stream\n", \ + (eng)->name); \ + __out(ebuf, " i915-Eng-Inst-Class: 0x%02x\n", (eng)->class); \ + __out(ebuf, " i915-Eng-Inst-Id: 0x%02x\n", (eng)->instance); \ + __out(ebuf, " i915-Eng-LogicalMask: 0x%08x\n", \ + (eng)->logical_mask); \ + } while (0) + +#define GCAP_PRINT_GUC_INST_INFO(ebuf, node) \ + do { \ + __out(ebuf, " GuC-Engine-Inst-Id: 0x%08x\n", \ + (node)->eng_inst); \ + __out(ebuf, " GuC-Context-Id: 0x%08x\n", (node)->guc_id); \ + __out(ebuf, " LRCA: 0x%08x\n", (node)->lrca); \ + } while (0) + int intel_guc_capture_print_engine_node(struct drm_i915_error_state_buf *ebuf, const struct intel_engine_coredump *ee) { + const char *grptype[GUC_STATE_CAPTURE_GROUP_TYPE_MAX] = { + "full-capture", + "partial-capture" + }; + const char *datatype[GUC_CAPTURE_LIST_TYPE_MAX] = { + "Global", + "Engine-Class", + "Engine-Instance" + }; + struct intel_guc_state_capture *cap; + struct __guc_capture_parsed_output *node; + struct intel_engine_cs *eng; + struct guc_mmio_reg *regs; + struct intel_guc *guc; + const char *str; + int numregs, i, j; + u32 is_ext; + + if (!ebuf || !ee) + return -EINVAL; + cap = ee->capture; + if (!cap || !ee->engine) + return -ENODEV; + + guc = &ee->engine->gt->uc.guc; + + __out(ebuf, "global --- GuC Error Capture on %s command stream:\n", + ee->engine->name); + + node = ee->guc_capture_node; + if (!node) { + __out(ebuf, " No matching ee-node\n"); + return 0; + } + + __out(ebuf, "Coverage: %s\n", grptype[node->is_partial]); + + for (i = GUC_CAPTURE_LIST_TYPE_GLOBAL; i < GUC_CAPTURE_LIST_TYPE_MAX; ++i) { + __out(ebuf, " RegListType: %s\n", + datatype[i % GUC_CAPTURE_LIST_TYPE_MAX]); + __out(ebuf, " Owner-Id: %d\n", node->reginfo[i].vfid); + + switch (i) { + case GUC_CAPTURE_LIST_TYPE_GLOBAL: + default: + break; + case GUC_CAPTURE_LIST_TYPE_ENGINE_CLASS: + __out(ebuf, " GuC-Eng-Class: %d\n", node->eng_class); + __out(ebuf, " i915-Eng-Class: %d\n", + guc_class_to_engine_class(node->eng_class)); + break; + case GUC_CAPTURE_LIST_TYPE_ENGINE_INSTANCE: + eng = intel_guc_lookup_engine(guc, node->eng_class, node->eng_inst); + if (eng) + GCAP_PRINT_INTEL_ENG_INFO(ebuf, eng); + else + __out(ebuf, " i915-Eng-Lookup Fail!\n"); + GCAP_PRINT_GUC_INST_INFO(ebuf, node); + break; + } + + numregs = node->reginfo[i].num_regs; + __out(ebuf, " NumRegs: %d\n", numregs); + j = 0; + while (numregs--) { + regs = node->reginfo[i].regs; + str = guc_capture_reg_to_str(guc, GUC_CAPTURE_LIST_INDEX_PF, i, + node->eng_class, 0, regs[j].offset, &is_ext); + if (!str) + __out(ebuf, " REG-0x%08x", regs[j].offset); + else + __out(ebuf, " %s", str); + if (is_ext) + __out(ebuf, "[%ld][%ld]", + FIELD_GET(GUC_REGSET_STEERING_GROUP, regs[j].flags), + FIELD_GET(GUC_REGSET_STEERING_INSTANCE, regs[j].flags)); + __out(ebuf, ": 0x%08x\n", regs[j].value); + ++j; + } + } return 0; }
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.h index a8688928f88e..d3d7bd0b6db6 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_capture.h @@ -10,8 +10,8 @@
struct drm_i915_error_state_buf; struct guc_gt_system_info; -struct intel_context; struct intel_engine_coredump; +struct intel_context; struct intel_gt; struct intel_guc;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index 5ee50a964803..2826eb6b6199 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -4112,8 +4112,8 @@ int intel_guc_error_capture_process_msg(struct intel_guc *guc, return 0; }
-static struct intel_engine_cs * -guc_lookup_engine(struct intel_guc *guc, u8 guc_class, u8 instance) +struct intel_engine_cs * +intel_guc_lookup_engine(struct intel_guc *guc, u8 guc_class, u8 instance) { struct intel_gt *gt = guc_to_gt(guc); u8 engine_class = guc_class_to_engine_class(guc_class); @@ -4162,7 +4162,7 @@ int intel_guc_engine_failure_process_msg(struct intel_guc *guc, instance = msg[1]; reason = msg[2];
- engine = guc_lookup_engine(guc, guc_class, instance); + engine = intel_guc_lookup_engine(guc, guc_class, instance); if (unlikely(!engine)) { drm_err(>->i915->drm, "Invalid engine %d:%d", guc_class, instance); diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 8d4b8d590985..4d12702bd9c2 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -309,6 +309,7 @@ static int i915_gpu_info_open(struct inode *inode, struct file *file) gpu = NULL; with_intel_runtime_pm(&i915->runtime_pm, wakeref) gpu = i915_gpu_coredump(to_gt(i915), ALL_ENGINES, CORE_DUMP_FLAG_NONE); + if (IS_ERR(gpu)) return PTR_ERR(gpu);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index e81b69b37df1..795f91a88d1d 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -532,8 +532,8 @@ __find_vma(struct i915_vma_coredump *vma, const char *name) return NULL; }
-static struct i915_vma_coredump * -find_batch(const struct intel_engine_coredump *ee) +struct i915_vma_coredump * +intel_gpu_error_find_batch(const struct intel_engine_coredump *ee) { return __find_vma(ee->vma, "batch"); } @@ -561,7 +561,7 @@ static void error_print_engine(struct drm_i915_error_state_buf *m,
error_print_instdone(m, ee);
- batch = find_batch(ee); + batch = intel_gpu_error_find_batch(ee); if (batch) { u64 start = batch->gtt_offset; u64 end = start + batch->gtt_size; @@ -612,9 +612,9 @@ void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...) va_end(args); }
-static void print_error_vma(struct drm_i915_error_state_buf *m, - const struct intel_engine_cs *engine, - const struct i915_vma_coredump *vma) +void intel_gpu_error_print_vma(struct drm_i915_error_state_buf *m, + const struct intel_engine_cs *engine, + const struct i915_vma_coredump *vma) { char out[ASCII85_BUFSZ]; struct page *page; @@ -683,7 +683,7 @@ static void err_print_uc(struct drm_i915_error_state_buf *m,
intel_uc_fw_dump(&error_uc->guc_fw, &p); intel_uc_fw_dump(&error_uc->huc_fw, &p); - print_error_vma(m, NULL, error_uc->guc_log); + intel_gpu_error_print_vma(m, NULL, error_uc->guc_log); }
static void err_free_sgl(struct scatterlist *sgl) @@ -803,7 +803,7 @@ static void err_print_gt_engines(struct drm_i915_error_state_buf *m, error_print_context(m, " Active context: ", &ee->context);
for (vma = ee->vma; vma; vma = vma->next) - print_error_vma(m, ee->engine, vma); + intel_gpu_error_print_vma(m, ee->engine, vma); }
} diff --git a/drivers/gpu/drm/i915/i915_gpu_error.h b/drivers/gpu/drm/i915/i915_gpu_error.h index cc08675064f6..09159ff01411 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.h +++ b/drivers/gpu/drm/i915/i915_gpu_error.h @@ -237,6 +237,11 @@ static inline u32 i915_reset_engine_count(struct i915_gpu_error *error,
__printf(2, 3) void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...); +void intel_gpu_error_print_vma(struct drm_i915_error_state_buf *m, + const struct intel_engine_cs *engine, + const struct i915_vma_coredump *vma); +struct i915_vma_coredump * +intel_gpu_error_find_batch(const struct intel_engine_coredump *ee);
struct i915_gpu_coredump *i915_gpu_coredump(struct intel_gt *gt, intel_engine_mask_t engine_mask, u32 dump_flags);