1 files changed, 201 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_debug.c b/drivers/gpu/drm/i915/i915_gem_debug.c
new file mode 100644
index 00000000000..131c088f8c8
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gem_debug.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Keith Packard <keithp@keithp.com>
+ *
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "i915_drm.h"
+#include "i915_drv.h"
+
+#if WATCH_INACTIVE
+void
+i915_verify_inactive(struct drm_device *dev, char *file, int line)
+{
+        drm_i915_private_t *dev_priv = dev->dev_private;
+        struct drm_gem_object *obj;
+        struct drm_i915_gem_object *obj_priv;
+
+        list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) {
+                obj = obj_priv->obj;
+                if (obj_priv->pin_count || obj_priv->active ||
+                    (obj->write_domain & ~(I915_GEM_DOMAIN_CPU |
+                                           I915_GEM_DOMAIN_GTT)))
+                        DRM_ERROR("inactive %p (p %d a %d w %x)  %s:%d\n",
+                                  obj,
+                                  obj_priv->pin_count, obj_priv->active,
+                                  obj->write_domain, file, line);
+        }
+}
+#endif /* WATCH_INACTIVE */
+
+
+#if WATCH_BUF | WATCH_EXEC | WATCH_PWRITE
+static void
+i915_gem_dump_page(struct page *page, uint32_t start, uint32_t end,
+                   uint32_t bias, uint32_t mark)
+{
+        uint32_t *mem = kmap_atomic(page, KM_USER0);
+        int i;
+        for (i = start; i < end; i += 4)
+                DRM_INFO("%08x: %08x%s\n",
+                          (int) (bias + i), mem[i / 4],
+                          (bias + i == mark) ? " ********" : "");
+        kunmap_atomic(mem, KM_USER0);
+        /* give syslog time to catch up */
+        msleep(1);
+}
+
+void
+i915_gem_dump_object(struct drm_gem_object *obj, int len,
+                     const char *where, uint32_t mark)
+{
+        struct drm_i915_gem_object *obj_priv = obj->driver_private;
+        int page;
+
+        DRM_INFO("%s: object at offset %08x\n", where, obj_priv->gtt_offset);
+        for (page = 0; page < (len + PAGE_SIZE-1) / PAGE_SIZE; page++) {
+                int page_len, chunk, chunk_len;
+
+                page_len = len - page * PAGE_SIZE;
+                if (page_len > PAGE_SIZE)
+                        page_len = PAGE_SIZE;
+
+                for (chunk = 0; chunk < page_len; chunk += 128) {
+                        chunk_len = page_len - chunk;
+                        if (chunk_len > 128)
+                                chunk_len = 128;
+                        i915_gem_dump_page(obj_priv->page_list[page],
+                                           chunk, chunk + chunk_len,
+                                           obj_priv->gtt_offset +
+                                           page * PAGE_SIZE,
+                                           mark);
+                }
+        }
+}
+#endif
+
+#if WATCH_LRU
+void
+i915_dump_lru(struct drm_device *dev, const char *where)
+{
+        drm_i915_private_t              *dev_priv = dev->dev_private;
+        struct drm_i915_gem_object      *obj_priv;
+
+        DRM_INFO("active list %s {\n", where);
+        list_for_each_entry(obj_priv, &dev_priv->mm.active_list,
+                            list)
+        {
+                DRM_INFO("    %p: %08x\n", obj_priv,
+                         obj_priv->last_rendering_seqno);
+        }
+        DRM_INFO("}\n");
+        DRM_INFO("flushing list %s {\n", where);
+        list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list,
+                            list)
+        {
+                DRM_INFO("    %p: %08x\n", obj_priv,
+                         obj_priv->last_rendering_seqno);
+        }
+        DRM_INFO("}\n");
+        DRM_INFO("inactive %s {\n", where);
+        list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) {
+                DRM_INFO("    %p: %08x\n", obj_priv,
+                         obj_priv->last_rendering_seqno);
+        }
+        DRM_INFO("}\n");
+}
+#endif
+
+
+#if WATCH_COHERENCY
+void
+i915_gem_object_check_coherency(struct drm_gem_object *obj, int handle)
+{
+        struct drm_device *dev = obj->dev;
+        struct drm_i915_gem_object *obj_priv = obj->driver_private;
+        int page;
+        uint32_t *gtt_mapping;
+        uint32_t *backing_map = NULL;
+        int bad_count = 0;
+
+        DRM_INFO("%s: checking coherency of object %p@0x%08x (%d, %dkb):\n",
+                 __func__, obj, obj_priv->gtt_offset, handle,
+                 obj->size / 1024);
+
+        gtt_mapping = ioremap(dev->agp->base + obj_priv->gtt_offset,
+                              obj->size);
+        if (gtt_mapping == NULL) {
+                DRM_ERROR("failed to map GTT space\n");
+                return;
+        }
+
+        for (page = 0; page < obj->size / PAGE_SIZE; page++) {
+                int i;
+
+                backing_map = kmap_atomic(obj_priv->page_list[page], KM_USER0);
+
+                if (backing_map == NULL) {
+                        DRM_ERROR("failed to map backing page\n");
+                        goto out;
+                }
+
+                for (i = 0; i < PAGE_SIZE / 4; i++) {
+                        uint32_t cpuval = backing_map[i];
+                        uint32_t gttval = readl(gtt_mapping +
+                                                page * 1024 + i);
+
+                        if (cpuval != gttval) {
+                                DRM_INFO("incoherent CPU vs GPU at 0x%08x: "
+                                         "0x%08x vs 0x%08x\n",
+                                         (int)(obj_priv->gtt_offset +
+                                               page * PAGE_SIZE + i * 4),
+                                         cpuval, gttval);
+                                if (bad_count++ >= 8) {
+                                        DRM_INFO("...\n");
+                                        goto out;
+                                }
+                        }
+                }
+                kunmap_atomic(backing_map, KM_USER0);
+                backing_map = NULL;
+        }
+
+ out:
+        if (backing_map != NULL)
+                kunmap_atomic(backing_map, KM_USER0);
+        iounmap(gtt_mapping);
+
+        /* give syslog time to catch up */
+        msleep(1);
+
+        /* Directly flush the object, since we just loaded values with the CPU
+         * from the backing pages and we don't want to disturb the cache
+         * management that we're trying to observe.
+         */
+
+        i915_gem_clflush_object(obj);
+}
+#endif