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                 head = &dev_priv->mm.active_list;
  79                 break;
  80         case INACTIVE_LIST:
  81                 seq_printf(m, "Inactive:\n");
  82                 head = &dev_priv->mm.inactive_list;
  83                 break;
  84         case FLUSHING_LIST:
  85                 seq_printf(m, "Flushing:\n");
  86                 head = &dev_priv->mm.flushing_list;
  87                 break;
  88         default:
  89                 DRM_INFO("Ooops, unexpected list\n");
  90                 return 0;
  91         }
  92
  93         if (lock)
  94                 spin_lock(lock);
  95         list_for_each_entry(obj_priv, head, list)
  96         {
  97                 struct drm_gem_object *obj = obj_priv->obj;
  98
  99                 seq_printf(m, "    %p: %s %08x %08x %d",
 100                            obj,
 101                            get_pin_flag(obj_priv),
 102                            obj->read_domains, obj->write_domain,
 103                            obj_priv->last_rendering_seqno);
 104
 105                 if (obj->name)
 106                         seq_printf(m, " (name: %d)", obj->name);
 107                 if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
 108                         seq_printf(m, " (fence: %d)", obj_priv->fence_reg);
 109                 if (obj_priv->gtt_space != NULL)
 110                         seq_printf(m, " (gtt_offset: %08x)", obj_priv->gtt_offset);
 111
 112                 seq_printf(m, "\n");
 113         }
 114
 115         if (lock)
 116             spin_unlock(lock);
 117         return 0;
 118 }
 119
 120 static int i915_gem_request_info(struct seq_file *m, void *data)
 121 {
 122         struct drm_info_node *node = (struct drm_info_node *) m->private;
 123         struct drm_device *dev = node->minor->dev;
 124         drm_i915_private_t *dev_priv = dev->dev_private;
 125         struct drm_i915_gem_request *gem_request;
 126
 127         seq_printf(m, "Request:\n");
 128         list_for_each_entry(gem_request, &dev_priv->mm.request_list, list) {
 129                 seq_printf(m, "    %d @ %d\n",
 130                            gem_request->seqno,
 131                            (int) (jiffies - gem_request->emitted_jiffies));
 132         }
 133         return 0;
 134 }
 135
 136 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 137 {
 138         struct drm_info_node *node = (struct drm_info_node *) m->private;
 139         struct drm_device *dev = node->minor->dev;
 140         drm_i915_private_t *dev_priv = dev->dev_private;
 141
 142         if (dev_priv->hw_status_page != NULL) {
 143                 seq_printf(m, "Current sequence: %d\n",
 144                            i915_get_gem_seqno(dev));
 145         } else {
 146                 seq_printf(m, "Current sequence: hws uninitialized\n");
 147         }
 148         seq_printf(m, "Waiter sequence:  %d\n",
 149                         dev_priv->mm.waiting_gem_seqno);
 150         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 151         return 0;
 152 }
 153
 154
 155 static int i915_interrupt_info(struct seq_file *m, void *data)
 156 {
 157         struct drm_info_node *node = (struct drm_info_node *) m->private;
 158         struct drm_device *dev = node->minor->dev;
 159         drm_i915_private_t *dev_priv = dev->dev_private;
 160
 161         seq_printf(m, "Interrupt enable:    %08x\n",
 162                    I915_READ(IER));
 163         seq_printf(m, "Interrupt identity:  %08x\n",
 164                    I915_READ(IIR));
 165         seq_printf(m, "Interrupt mask:      %08x\n",
 166                    I915_READ(IMR));
 167         seq_printf(m, "Pipe A stat:         %08x\n",
 168                    I915_READ(PIPEASTAT));
 169         seq_printf(m, "Pipe B stat:         %08x\n",
 170                    I915_READ(PIPEBSTAT));
 171         seq_printf(m, "Interrupts received: %d\n",
 172                    atomic_read(&dev_priv->irq_received));
 173         if (dev_priv->hw_status_page != NULL) {
 174                 seq_printf(m, "Current sequence:    %d\n",
 175                            i915_get_gem_seqno(dev));
 176         } else {
 177                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 178         }
 179         seq_printf(m, "Waiter sequence:     %d\n",
 180                    dev_priv->mm.waiting_gem_seqno);
 181         seq_printf(m, "IRQ sequence:        %d\n",
 182                    dev_priv->mm.irq_gem_seqno);
 183         return 0;
 184 }
 185
 186 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 187 {
 188         struct drm_info_node *node = (struct drm_info_node *) m->private;
 189         struct drm_device *dev = node->minor->dev;
 190         drm_i915_private_t *dev_priv = dev->dev_private;
 191         int i;
 192
 193         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 194         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 195         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 196                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 197
 198                 if (obj == NULL) {
 199                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 200                 } else {
 201                         struct drm_i915_gem_object *obj_priv;
 202
 203                         obj_priv = obj->driver_private;
 204                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 205                                    "%08x %08zx %08x %s %08x %08x %d",
 206                                    i, obj, get_pin_flag(obj_priv),
 207                                    obj_priv->gtt_offset,
 208                                    obj->size, obj_priv->stride,
 209                                    get_tiling_flag(obj_priv),
 210                                    obj->read_domains, obj->write_domain,
 211                                    obj_priv->last_rendering_seqno);
 212                         if (obj->name)
 213                                 seq_printf(m, " (name: %d)", obj->name);
 214                         seq_printf(m, "\n");
 215                 }
 216         }
 217
 218         return 0;
 219 }
 220
 221 static int i915_hws_info(struct seq_file *m, void *data)
 222 {
 223         struct drm_info_node *node = (struct drm_info_node *) m->private;
 224         struct drm_device *dev = node->minor->dev;
 225         drm_i915_private_t *dev_priv = dev->dev_private;
 226         int i;
 227         volatile u32 *hws;
 228
 229         hws = (volatile u32 *)dev_priv->hw_status_page;
 230         if (hws == NULL)
 231                 return 0;
 232
 233         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 234                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 235                            i * 4,
 236                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 237         }
 238         return 0;
 239 }
 240
 241 static void i915_dump_pages(struct seq_file *m, struct page **pages, int page_count)
 242 {
 243         int page, i;
 244         uint32_t *mem;
 245
 246         for (page = 0; page < page_count; page++) {
 247                 mem = kmap(pages[page]);
 248                 for (i = 0; i < PAGE_SIZE; i += 4)
 249                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 250                 kunmap(pages[page]);
 251         }
 252 }
 253
 254 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 255 {
 256         struct drm_info_node *node = (struct drm_info_node *) m->private;
 257         struct drm_device *dev = node->minor->dev;
 258         drm_i915_private_t *dev_priv = dev->dev_private;
 259         struct drm_gem_object *obj;
 260         struct drm_i915_gem_object *obj_priv;
 261         int ret;
 262
 263         spin_lock(&dev_priv->mm.active_list_lock);
 264
 265         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) {
 266                 obj = obj_priv->obj;
 267                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 268                     ret = i915_gem_object_get_pages(obj);
 269                     if (ret) {
 270                             DRM_ERROR("Failed to get pages: %d\n", ret);
 271                             spin_unlock(&dev_priv->mm.active_list_lock);
 272                             return ret;
 273                     }
 274
 275                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj_priv->gtt_offset);
 276                     i915_dump_pages(m, obj_priv->pages, obj->size / PAGE_SIZE);
 277
 278                     i915_gem_object_put_pages(obj);
 279                 }
 280         }
 281
 282         spin_unlock(&dev_priv->mm.active_list_lock);
 283
 284         return 0;
 285 }
 286
 287 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 288 {
 289         struct drm_info_node *node = (struct drm_info_node *) m->private;
 290         struct drm_device *dev = node->minor->dev;
 291         drm_i915_private_t *dev_priv = dev->dev_private;
 292         u8 *virt;
 293         uint32_t *ptr, off;
 294
 295         if (!dev_priv->ring.ring_obj) {
 296                 seq_printf(m, "No ringbuffer setup\n");
 297                 return 0;
 298         }
 299
 300         virt = dev_priv->ring.virtual_start;
 301
 302         for (off = 0; off < dev_priv->ring.Size; off += 4) {
 303                 ptr = (uint32_t *)(virt + off);
 304                 seq_printf(m, "%08x :  %08x\n", off, *ptr);
 305         }
 306
 307         return 0;
 308 }
 309
 310 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 311 {
 312         struct drm_info_node *node = (struct drm_info_node *) m->private;
 313         struct drm_device *dev = node->minor->dev;
 314         drm_i915_private_t *dev_priv = dev->dev_private;
 315         unsigned int head, tail, mask;
 316
 317         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 318         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 319         mask = dev_priv->ring.tail_mask;
 320
 321         seq_printf(m, "RingHead :  %08x\n", head);
 322         seq_printf(m, "RingTail :  %08x\n", tail);
 323         seq_printf(m, "RingMask :  %08x\n", mask);
 324         seq_printf(m, "RingSize :  %08lx\n", dev_priv->ring.Size);
 325         seq_printf(m, "Acthd :     %08x\n", I915_READ(IS_I965G(dev) ? ACTHD_I965 : ACTHD));
 326
 327         return 0;
 328 }
 329
 330 static int i915_error_state(struct seq_file *m, void *unused)
 331 {
 332         struct drm_info_node *node = (struct drm_info_node *) m->private;
 333         struct drm_device *dev = node->minor->dev;
 334         drm_i915_private_t *dev_priv = dev->dev_private;
 335         struct drm_i915_error_state *error;
 336         unsigned long flags;
 337
 338         spin_lock_irqsave(&dev_priv->error_lock, flags);
 339         if (!dev_priv->first_error) {
 340                 seq_printf(m, "no error state collected\n");
 341                 goto out;
 342         }
 343
 344         error = dev_priv->first_error;
 345
 346         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 347                    error->time.tv_usec);
 348         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 349         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 350         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 351         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 352         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 353         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 354         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 355         if (IS_I965G(dev)) {
 356                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 357                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 358         }
 359
 360 out:
 361         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 362
 363         return 0;
 364 }
 365
 366 static struct drm_info_list i915_gem_debugfs_list[] = {
 367         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
 368         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
 369         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
 370         {"i915_gem_request", i915_gem_request_info, 0},
 371         {"i915_gem_seqno", i915_gem_seqno_info, 0},
 372         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
 373         {"i915_gem_interrupt", i915_interrupt_info, 0},
 374         {"i915_gem_hws", i915_hws_info, 0},
 375         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
 376         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
 377         {"i915_batchbuffers", i915_batchbuffer_info, 0},
 378         {"i915_error_state", i915_error_state, 0},
 379 };
 380 #define I915_GEM_DEBUGFS_ENTRIES ARRAY_SIZE(i915_gem_debugfs_list)
 381
 382 int i915_gem_debugfs_init(struct drm_minor *minor)
 383 {
 384         return drm_debugfs_create_files(i915_gem_debugfs_list,
 385                                         I915_GEM_DEBUGFS_ENTRIES,
 386                                         minor->debugfs_root, minor);
 387 }
 388
 389 void i915_gem_debugfs_cleanup(struct drm_minor *minor)
 390 {
 391         drm_debugfs_remove_files(i915_gem_debugfs_list,
 392                                  I915_GEM_DEBUGFS_ENTRIES, minor);
 393 }
 394
 395 #endif /* CONFIG_DEBUG_FS */
 396