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