1 files changed, 172 insertions, 31 deletions

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index f020c0086fbc..0c38bfb60c9a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -187,64 +187,64 @@ i915_error_printer(struct drm_i915_error_state_buf *e)
 }
 
 /* single threaded page allocator with a reserved stash for emergencies */
-static void pool_fini(struct pagevec *pv)
+static void pool_fini(struct folio_batch *fbatch)
 {
-	pagevec_release(pv);
+	folio_batch_release(fbatch);
 }
 
-static int pool_refill(struct pagevec *pv, gfp_t gfp)
+static int pool_refill(struct folio_batch *fbatch, gfp_t gfp)
 {
-	while (pagevec_space(pv)) {
-		struct page *p;
+	while (folio_batch_space(fbatch)) {
+		struct folio *folio;
 
-		p = alloc_page(gfp);
-		if (!p)
+		folio = folio_alloc(gfp, 0);
+		if (!folio)
 			return -ENOMEM;
 
-		pagevec_add(pv, p);
+		folio_batch_add(fbatch, folio);
 	}
 
 	return 0;
 }
 
-static int pool_init(struct pagevec *pv, gfp_t gfp)
+static int pool_init(struct folio_batch *fbatch, gfp_t gfp)
 {
 	int err;
 
-	pagevec_init(pv);
+	folio_batch_init(fbatch);
 
-	err = pool_refill(pv, gfp);
+	err = pool_refill(fbatch, gfp);
 	if (err)
-		pool_fini(pv);
+		pool_fini(fbatch);
 
 	return err;
 }
 
-static void *pool_alloc(struct pagevec *pv, gfp_t gfp)
+static void *pool_alloc(struct folio_batch *fbatch, gfp_t gfp)
 {
-	struct page *p;
+	struct folio *folio;
 
-	p = alloc_page(gfp);
-	if (!p && pagevec_count(pv))
-		p = pv->pages[--pv->nr];
+	folio = folio_alloc(gfp, 0);
+	if (!folio && folio_batch_count(fbatch))
+		folio = fbatch->folios[--fbatch->nr];
 
-	return p ? page_address(p) : NULL;
+	return folio ? folio_address(folio) : NULL;
 }
 
-static void pool_free(struct pagevec *pv, void *addr)
+static void pool_free(struct folio_batch *fbatch, void *addr)
 {
-	struct page *p = virt_to_page(addr);
+	struct folio *folio = virt_to_folio(addr);
 
-	if (pagevec_space(pv))
-		pagevec_add(pv, p);
+	if (folio_batch_space(fbatch))
+		folio_batch_add(fbatch, folio);
 	else
-		__free_page(p);
+		folio_put(folio);
 }
 
 #ifdef CONFIG_DRM_I915_COMPRESS_ERROR
 
 struct i915_vma_compress {
-	struct pagevec pool;
+	struct folio_batch pool;
 	struct z_stream_s zstream;
 	void *tmp;
 };
@@ -381,7 +381,7 @@ static void err_compression_marker(struct drm_i915_error_state_buf *m)
 #else
 
 struct i915_vma_compress {
-	struct pagevec pool;
+	struct folio_batch pool;
 };
 
 static bool compress_init(struct i915_vma_compress *c)
@@ -808,10 +808,15 @@ static void err_print_gt_engines(struct drm_i915_error_state_buf *m,
 	for (ee = gt->engine; ee; ee = ee->next) {
 		const struct i915_vma_coredump *vma;
 
-		if (ee->guc_capture_node)
-			intel_guc_capture_print_engine_node(m, ee);
-		else
+		if (gt->uc && gt->uc->guc.is_guc_capture) {
+			if (ee->guc_capture_node)
+				intel_guc_capture_print_engine_node(m, ee);
+			else
+				err_printf(m, "  Missing GuC capture node for %s\n",
+					   ee->engine->name);
+		} else {
 			error_print_engine(m, ee);
+		}
 
 		err_printf(m, "  hung: %u\n", ee->hung);
 		err_printf(m, "  engine reset count: %u\n", ee->reset_count);
@@ -1117,10 +1122,14 @@ i915_vma_coredump_create(const struct intel_gt *gt,
 			mutex_lock(&ggtt->error_mutex);
 			if (ggtt->vm.raw_insert_page)
 				ggtt->vm.raw_insert_page(&ggtt->vm, dma, slot,
-							 I915_CACHE_NONE, 0);
+							 i915_gem_get_pat_index(gt->i915,
+										I915_CACHE_NONE),
+							 0);
 			else
 				ggtt->vm.insert_page(&ggtt->vm, dma, slot,
-						     I915_CACHE_NONE, 0);
+						     i915_gem_get_pat_index(gt->i915,
+									    I915_CACHE_NONE),
+						     0);
 			mb();
 
 			s = io_mapping_map_wc(&ggtt->iomap, slot, PAGE_SIZE);
@@ -2162,7 +2171,7 @@ void i915_error_state_store(struct i915_gpu_coredump *error)
  * i915_capture_error_state - capture an error record for later analysis
  * @gt: intel_gt which originated the hang
  * @engine_mask: hung engines
- *
+ * @dump_flags: dump flags
  *
  * Should be called when an error is detected (either a hang or an error
  * interrupt) to capture error state from the time of the error.  Fills
@@ -2219,3 +2228,135 @@ void i915_disable_error_state(struct drm_i915_private *i915, int err)
 		i915->gpu_error.first_error = ERR_PTR(err);
 	spin_unlock_irq(&i915->gpu_error.lock);
 }
+
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)
+void intel_klog_error_capture(struct intel_gt *gt,
+			      intel_engine_mask_t engine_mask)
+{
+	static int g_count;
+	struct drm_i915_private *i915 = gt->i915;
+	struct i915_gpu_coredump *error;
+	intel_wakeref_t wakeref;
+	size_t buf_size = PAGE_SIZE * 128;
+	size_t pos_err;
+	char *buf, *ptr, *next;
+	int l_count = g_count++;
+	int line = 0;
+
+	/* Can't allocate memory during a reset */
+	if (test_bit(I915_RESET_BACKOFF, &gt->reset.flags)) {
+		drm_err(&gt->i915->drm, "[Capture/%d.%d] Inside GT reset, skipping error capture :(\n",
+			l_count, line++);
+		return;
+	}
+
+	error = READ_ONCE(i915->gpu_error.first_error);
+	if (error) {
+		drm_err(&i915->drm, "[Capture/%d.%d] Clearing existing error capture first...\n",
+			l_count, line++);
+		i915_reset_error_state(i915);
+	}
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref)
+		error = i915_gpu_coredump(gt, engine_mask, CORE_DUMP_FLAG_NONE);
+
+	if (IS_ERR(error)) {
+		drm_err(&i915->drm, "[Capture/%d.%d] Failed to capture error capture: %ld!\n",
+			l_count, line++, PTR_ERR(error));
+		return;
+	}
+
+	buf = kvmalloc(buf_size, GFP_KERNEL);
+	if (!buf) {
+		drm_err(&i915->drm, "[Capture/%d.%d] Failed to allocate buffer for error capture!\n",
+			l_count, line++);
+		i915_gpu_coredump_put(error);
+		return;
+	}
+
+	drm_info(&i915->drm, "[Capture/%d.%d] Dumping i915 error capture for %ps...\n",
+		 l_count, line++, __builtin_return_address(0));
+
+	/* Largest string length safe to print via dmesg */
+#	define MAX_CHUNK	800
+
+	pos_err = 0;
+	while (1) {
+		ssize_t got = i915_gpu_coredump_copy_to_buffer(error, buf, pos_err, buf_size - 1);
+
+		if (got <= 0)
+			break;
+
+		buf[got] = 0;
+		pos_err += got;
+
+		ptr = buf;
+		while (got > 0) {
+			size_t count;
+			char tag[2];
+
+			next = strnchr(ptr, got, '\n');
+			if (next) {
+				count = next - ptr;
+				*next = 0;
+				tag[0] = '>';
+				tag[1] = '<';
+			} else {
+				count = got;
+				tag[0] = '}';
+				tag[1] = '{';
+			}
+
+			if (count > MAX_CHUNK) {
+				size_t pos;
+				char *ptr2 = ptr;
+
+				for (pos = MAX_CHUNK; pos < count; pos += MAX_CHUNK) {
+					char chr = ptr[pos];
+
+					ptr[pos] = 0;
+					drm_info(&i915->drm, "[Capture/%d.%d] }%s{\n",
+						 l_count, line++, ptr2);
+					ptr[pos] = chr;
+					ptr2 = ptr + pos;
+
+					/*
+					 * If spewing large amounts of data via a serial console,
+					 * this can be a very slow process. So be friendly and try
+					 * not to cause 'softlockup on CPU' problems.
+					 */
+					cond_resched();
+				}
+
+				if (ptr2 < (ptr + count))
+					drm_info(&i915->drm, "[Capture/%d.%d] %c%s%c\n",
+						 l_count, line++, tag[0], ptr2, tag[1]);
+				else if (tag[0] == '>')
+					drm_info(&i915->drm, "[Capture/%d.%d] ><\n",
+						 l_count, line++);
+			} else {
+				drm_info(&i915->drm, "[Capture/%d.%d] %c%s%c\n",
+					 l_count, line++, tag[0], ptr, tag[1]);
+			}
+
+			ptr = next;
+			got -= count;
+			if (next) {
+				ptr++;
+				got--;
+			}
+
+			/* As above. */
+			cond_resched();
+		}
+
+		if (got)
+			drm_info(&i915->drm, "[Capture/%d.%d] Got %zd bytes remaining!\n",
+				 l_count, line++, got);
+	}
+
+	kvfree(buf);
+
+	drm_info(&i915->drm, "[Capture/%d.%d] Dumped %zd bytes\n", l_count, line++, pos_err);
+}
+#endif