drivers/gpu/drm/i915/i915_gem_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include "drmP.h"
  31 #include "drm.h"
  32 #include "i915_drm.h"
  33 #include "i915_drv.h"
  34
  35 #define DRM_I915_RING_DEBUG 1
  36
  37
  38 #if defined(CONFIG_DEBUG_FS)
  39
  40 #define ACTIVE_LIST     1
  41 #define FLUSHING_LIST   2
  42 #define INACTIVE_LIST   3
  43
  44 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  45 {
  46         if (obj_priv->user_pin_count > 0)
  47                 return "P";
  48         else if (obj_priv->pin_count > 0)
  49                 return "p";
  50         else
  51                 return " ";
  52 }
  53
  54 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
  55 {
  56     switch (obj_priv->tiling_mode) {
  57     default:
  58     case I915_TILING_NONE: return " ";
  59     case I915_TILING_X: return "X";
  60     case I915_TILING_Y: return "Y";
  61     }
  62 }
  63
  64 static int i915_gem_object_list_info(struct seq_file *m, void *data)
  65 {
  66         struct drm_info_node *node = (struct drm_info_node *) m->private;
  67         uintptr_t list = (uintptr_t) node->info_ent->data;
  68         struct list_head *head;
  69         struct drm_device *dev = node->minor->dev;
  70         drm_i915_private_t *dev_priv = dev->dev_private;
  71         struct drm_i915_gem_object *obj_priv;
  72         spinlock_t *lock = NULL;
  73
  74         switch (list) {
  75         case ACTIVE_LIST:
  76                 seq_printf(m, "Active:\n");
  77                 lock = &dev_priv->mm.active_list_lock;
  78                 spin_lock(lock);
  79                 head = &dev_priv->mm.active_list;
  80                 break;
  81         case INACTIVE_LIST:
  82                 seq_printf(m, "Inctive:\n");
  83                 head = &dev_priv->mm.inactive_list;
  84                 break;
  85         case FLUSHING_LIST:
  86                 seq_printf(m, "Flushing:\n");
  87                 head = &dev_priv->mm.flushing_list;
  88                 break;
  89         default:
  90                 DRM_INFO("Ooops, unexpected list\n");
  91                 return 0;
  92         }
  93
  94         list_for_each_entry(obj_priv, head, list)
  95         {
  96                 struct drm_gem_object *obj = obj_priv->obj;
  97
  98                 seq_printf(m, "    %p: %s %08x %08x %d",
  99                            obj,
 100                            get_pin_flag(obj_priv),
 101                            obj->read_domains, obj->write_domain,
 102                            obj_priv->last_rendering_seqno);
 103
 104                 if (obj->name)
 105                         seq_printf(m, " (name: %d)", obj->name);
 106                 if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
 107                         seq_printf(m, " (fence: %d)\n", obj_priv->fence_reg);
 108                 seq_printf(m, "\n");
 109         }
 110
 111         if (lock)
 112             spin_unlock(lock);
 113         return 0;
 114 }
 115
 116 static int i915_gem_request_info(struct seq_file *m, void *data)
 117 {
 118         struct drm_info_node *node = (struct drm_info_node *) m->private;
 119         struct drm_device *dev = node->minor->dev;
 120         drm_i915_private_t *dev_priv = dev->dev_private;
 121         struct drm_i915_gem_request *gem_request;
 122
 123         seq_printf(m, "Request:\n");
 124         list_for_each_entry(gem_request, &dev_priv->mm.request_list, list) {
 125                 seq_printf(m, "    %d @ %d\n",
 126                            gem_request->seqno,
 127                            (int) (jiffies - gem_request->emitted_jiffies));
 128         }
 129         return 0;
 130 }
 131
 132 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 133 {
 134         struct drm_info_node *node = (struct drm_info_node *) m->private;
 135         struct drm_device *dev = node->minor->dev;
 136         drm_i915_private_t *dev_priv = dev->dev_private;
 137
 138         if (dev_priv->hw_status_page != NULL) {
 139                 seq_printf(m, "Current sequence: %d\n",
 140                            i915_get_gem_seqno(dev));
 141         } else {
 142                 seq_printf(m, "Current sequence: hws uninitialized\n");
 143         }
 144         seq_printf(m, "Waiter sequence:  %d\n",
 145                         dev_priv->mm.waiting_gem_seqno);
 146         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 147         return 0;
 148 }
 149
 150
 151 static int i915_interrupt_info(struct seq_file *m, void *data)
 152 {
 153         struct drm_info_node *node = (struct drm_info_node *) m->private;
 154         struct drm_device *dev = node->minor->dev;
 155         drm_i915_private_t *dev_priv = dev->dev_private;
 156
 157         seq_printf(m, "Interrupt enable:    %08x\n",
 158                    I915_READ(IER));
 159         seq_printf(m, "Interrupt identity:  %08x\n",
 160                    I915_READ(IIR));
 161         seq_printf(m, "Interrupt mask:      %08x\n",
 162                    I915_READ(IMR));
 163         seq_printf(m, "Pipe A stat:         %08x\n",
 164                    I915_READ(PIPEASTAT));
 165         seq_printf(m, "Pipe B stat:         %08x\n",
 166                    I915_READ(PIPEBSTAT));
 167         seq_printf(m, "Interrupts received: %d\n",
 168                    atomic_read(&dev_priv->irq_received));
 169         if (dev_priv->hw_status_page != NULL) {
 170                 seq_printf(m, "Current sequence:    %d\n",
 171                            i915_get_gem_seqno(dev));
 172         } else {
 173                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 174         }
 175         seq_printf(m, "Waiter sequence:     %d\n",
 176                    dev_priv->mm.waiting_gem_seqno);
 177         seq_printf(m, "IRQ sequence:        %d\n",
 178                    dev_priv->mm.irq_gem_seqno);
 179         return 0;
 180 }
 181
 182 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 183 {
 184         struct drm_info_node *node = (struct drm_info_node *) m->private;
 185         struct drm_device *dev = node->minor->dev;
 186         drm_i915_private_t *dev_priv = dev->dev_private;
 187         int i;
 188
 189         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 190         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 191         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 192                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 193
 194                 if (obj == NULL) {
 195                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 196                 } else {
 197                         struct drm_i915_gem_object *obj_priv;
 198
 199                         obj_priv = obj->driver_private;
 200                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 201                                    "%08x %08zx %08x %s %08x %08x %d",
 202                                    i, obj, get_pin_flag(obj_priv),
 203                                    obj_priv->gtt_offset,
 204                                    obj->size, obj_priv->stride,
 205                                    get_tiling_flag(obj_priv),
 206                                    obj->read_domains, obj->write_domain,
 207                                    obj_priv->last_rendering_seqno);
 208                         if (obj->name)
 209                                 seq_printf(m, " (name: %d)", obj->name);
 210                         seq_printf(m, "\n");
 211                 }
 212         }
 213
 214         return 0;
 215 }
 216
 217 static int i915_hws_info(struct seq_file *m, void *data)
 218 {
 219         struct drm_info_node *node = (struct drm_info_node *) m->private;
 220         struct drm_device *dev = node->minor->dev;
 221         drm_i915_private_t *dev_priv = dev->dev_private;
 222         int i;
 223         volatile u32 *hws;
 224
 225         hws = (volatile u32 *)dev_priv->hw_status_page;
 226         if (hws == NULL)
 227                 return 0;
 228
 229         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 230                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 231                            i * 4,
 232                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 233         }
 234         return 0;
 235 }
 236
 237 static void i915_dump_pages(struct seq_file *m, struct page **pages, int page_count)
 238 {
 239         int page, i;
 240         uint32_t *mem;
 241
 242         for (page = 0; page < page_count; page++) {
 243                 mem = kmap(pages[page]);
 244                 for (i = 0; i < PAGE_SIZE; i += 4)
 245                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 246                 kunmap(pages[page]);
 247         }
 248 }
 249
 250 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 251 {
 252         struct drm_info_node *node = (struct drm_info_node *) m->private;
 253         struct drm_device *dev = node->minor->dev;
 254         drm_i915_private_t *dev_priv = dev->dev_private;
 255         struct drm_gem_object *obj;
 256         struct drm_i915_gem_object *obj_priv;
 257         int ret;
 258
 259         spin_lock(&dev_priv->mm.active_list_lock);
 260
 261         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) {
 262                 obj = obj_priv->obj;
 263                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 264                     ret = i915_gem_object_get_pages(obj);
 265                     if (ret) {
 266                             DRM_ERROR("Failed to get pages: %d\n", ret);
 267                             spin_unlock(&dev_priv->mm.active_list_lock);
 268                             return ret;
 269                     }
 270
 271                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj_priv->gtt_offset);
 272                     i915_dump_pages(m, obj_priv->pages, obj->size / PAGE_SIZE);
 273
 274                     i915_gem_object_put_pages(obj);
 275                 }
 276         }
 277
 278         spin_unlock(&dev_priv->mm.active_list_lock);
 279
 280         return 0;
 281 }
 282
 283 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 284 {
 285         struct drm_info_node *node = (struct drm_info_node *) m->private;
 286         struct drm_device *dev = node->minor->dev;
 287         drm_i915_private_t *dev_priv = dev->dev_private;
 288         u8 *virt;
 289         uint32_t *ptr, off;
 290
 291         if (!dev_priv->ring.ring_obj) {
 292                 seq_printf(m, "No ringbuffer setup\n");
 293                 return 0;
 294         }
 295
 296         virt = dev_priv->ring.virtual_start;
 297
 298         for (off = 0; off < dev_priv->ring.Size; off += 4) {
 299                 ptr = (uint32_t *)(virt + off);
 300                 seq_printf(m, "%08x :  %08x\n", off, *ptr);
 301         }
 302
 303         return 0;
 304 }
 305
 306 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 307 {
 308         struct drm_info_node *node = (struct drm_info_node *) m->private;
 309         struct drm_device *dev = node->minor->dev;
 310         drm_i915_private_t *dev_priv = dev->dev_private;
 311         unsigned int head, tail, mask;
 312
 313         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 314         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 315         mask = dev_priv->ring.tail_mask;
 316
 317         seq_printf(m, "RingHead :  %08x\n", head);
 318         seq_printf(m, "RingTail :  %08x\n", tail);
 319         seq_printf(m, "RingMask :  %08x\n", mask);
 320         seq_printf(m, "RingSize :  %08lx\n", dev_priv->ring.Size);
 321         seq_printf(m, "Acthd :     %08x\n", I915_READ(IS_I965G(dev) ? ACTHD_I965 : ACTHD));
 322
 323         return 0;
 324 }
 325
 326
 327 static struct drm_info_list i915_gem_debugfs_list[] = {
 328         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
 329         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
 330         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
 331         {"i915_gem_request", i915_gem_request_info, 0},
 332         {"i915_gem_seqno", i915_gem_seqno_info, 0},
 333         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
 334         {"i915_gem_interrupt", i915_interrupt_info, 0},
 335         {"i915_gem_hws", i915_hws_info, 0},
 336         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
 337         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
 338         {"i915_batchbuffers", i915_batchbuffer_info, 0},
 339 };
 340 #define I915_GEM_DEBUGFS_ENTRIES ARRAY_SIZE(i915_gem_debugfs_list)
 341
 342 int i915_gem_debugfs_init(struct drm_minor *minor)
 343 {
 344         return drm_debugfs_create_files(i915_gem_debugfs_list,
 345                                         I915_GEM_DEBUGFS_ENTRIES,
 346                                         minor->debugfs_root, minor);
 347 }
 348
 349 void i915_gem_debugfs_cleanup(struct drm_minor *minor)
 350 {
 351         drm_debugfs_remove_files(i915_gem_debugfs_list,
 352                                  I915_GEM_DEBUGFS_ENTRIES, minor);
 353 }
 354
 355 #endif /* CONFIG_DEBUG_FS */
 356