SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/i915/i915_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 <linux/debugfs.h>
  31 #include "drmP.h"
  32 #include "drm.h"
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35
  36 #define DRM_I915_RING_DEBUG 1
  37
  38
  39 #if defined(CONFIG_DEBUG_FS)
  40
  41 #define ACTIVE_LIST     1
  42 #define FLUSHING_LIST   2
  43 #define INACTIVE_LIST   3
  44
  45 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  46 {
  47         if (obj_priv->user_pin_count > 0)
  48                 return "P";
  49         else if (obj_priv->pin_count > 0)
  50                 return "p";
  51         else
  52                 return " ";
  53 }
  54
  55 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
  56 {
  57     switch (obj_priv->tiling_mode) {
  58     default:
  59     case I915_TILING_NONE: return " ";
  60     case I915_TILING_X: return "X";
  61     case I915_TILING_Y: return "Y";
  62     }
  63 }
  64
  65 static int i915_gem_object_list_info(struct seq_file *m, void *data)
  66 {
  67         struct drm_info_node *node = (struct drm_info_node *) m->private;
  68         uintptr_t list = (uintptr_t) node->info_ent->data;
  69         struct list_head *head;
  70         struct drm_device *dev = node->minor->dev;
  71         drm_i915_private_t *dev_priv = dev->dev_private;
  72         struct drm_i915_gem_object *obj_priv;
  73         spinlock_t *lock = NULL;
  74
  75         switch (list) {
  76         case ACTIVE_LIST:
  77                 seq_printf(m, "Active:\n");
  78                 lock = &dev_priv->mm.active_list_lock;
  79                 head = &dev_priv->mm.active_list;
  80                 break;
  81         case INACTIVE_LIST:
  82                 seq_printf(m, "Inactive:\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         if (lock)
  95                 spin_lock(lock);
  96         list_for_each_entry(obj_priv, head, list)
  97         {
  98                 struct drm_gem_object *obj = obj_priv->obj;
  99
 100                 seq_printf(m, "    %p: %s %8zd %08x %08x %d %s",
 101                            obj,
 102                            get_pin_flag(obj_priv),
 103                            obj->size,
 104                            obj->read_domains, obj->write_domain,
 105                            obj_priv->last_rendering_seqno,
 106                            obj_priv->dirty ? "dirty" : "");
 107
 108                 if (obj->name)
 109                         seq_printf(m, " (name: %d)", obj->name);
 110                 if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
 111                         seq_printf(m, " (fence: %d)", obj_priv->fence_reg);
 112                 if (obj_priv->gtt_space != NULL)
 113                         seq_printf(m, " (gtt_offset: %08x)", obj_priv->gtt_offset);
 114
 115                 seq_printf(m, "\n");
 116         }
 117
 118         if (lock)
 119             spin_unlock(lock);
 120         return 0;
 121 }
 122
 123 static int i915_gem_request_info(struct seq_file *m, void *data)
 124 {
 125         struct drm_info_node *node = (struct drm_info_node *) m->private;
 126         struct drm_device *dev = node->minor->dev;
 127         drm_i915_private_t *dev_priv = dev->dev_private;
 128         struct drm_i915_gem_request *gem_request;
 129
 130         seq_printf(m, "Request:\n");
 131         list_for_each_entry(gem_request, &dev_priv->mm.request_list, list) {
 132                 seq_printf(m, "    %d @ %d\n",
 133                            gem_request->seqno,
 134                            (int) (jiffies - gem_request->emitted_jiffies));
 135         }
 136         return 0;
 137 }
 138
 139 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 140 {
 141         struct drm_info_node *node = (struct drm_info_node *) m->private;
 142         struct drm_device *dev = node->minor->dev;
 143         drm_i915_private_t *dev_priv = dev->dev_private;
 144
 145         if (dev_priv->hw_status_page != NULL) {
 146                 seq_printf(m, "Current sequence: %d\n",
 147                            i915_get_gem_seqno(dev));
 148         } else {
 149                 seq_printf(m, "Current sequence: hws uninitialized\n");
 150         }
 151         seq_printf(m, "Waiter sequence:  %d\n",
 152                         dev_priv->mm.waiting_gem_seqno);
 153         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 154         return 0;
 155 }
 156
 157
 158 static int i915_interrupt_info(struct seq_file *m, void *data)
 159 {
 160         struct drm_info_node *node = (struct drm_info_node *) m->private;
 161         struct drm_device *dev = node->minor->dev;
 162         drm_i915_private_t *dev_priv = dev->dev_private;
 163
 164         if (!IS_IRONLAKE(dev)) {
 165                 seq_printf(m, "Interrupt enable:    %08x\n",
 166                            I915_READ(IER));
 167                 seq_printf(m, "Interrupt identity:  %08x\n",
 168                            I915_READ(IIR));
 169                 seq_printf(m, "Interrupt mask:      %08x\n",
 170                            I915_READ(IMR));
 171                 seq_printf(m, "Pipe A stat:         %08x\n",
 172                            I915_READ(PIPEASTAT));
 173                 seq_printf(m, "Pipe B stat:         %08x\n",
 174                            I915_READ(PIPEBSTAT));
 175         } else {
 176                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 177                            I915_READ(DEIER));
 178                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 179                            I915_READ(DEIIR));
 180                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 181                            I915_READ(DEIMR));
 182                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 183                            I915_READ(SDEIER));
 184                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 185                            I915_READ(SDEIIR));
 186                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 187                            I915_READ(SDEIMR));
 188                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 189                            I915_READ(GTIER));
 190                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 191                            I915_READ(GTIIR));
 192                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 193                            I915_READ(GTIMR));
 194         }
 195         seq_printf(m, "Interrupts received: %d\n",
 196                    atomic_read(&dev_priv->irq_received));
 197         if (dev_priv->hw_status_page != NULL) {
 198                 seq_printf(m, "Current sequence:    %d\n",
 199                            i915_get_gem_seqno(dev));
 200         } else {
 201                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 202         }
 203         seq_printf(m, "Waiter sequence:     %d\n",
 204                    dev_priv->mm.waiting_gem_seqno);
 205         seq_printf(m, "IRQ sequence:        %d\n",
 206                    dev_priv->mm.irq_gem_seqno);
 207         return 0;
 208 }
 209
 210 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 211 {
 212         struct drm_info_node *node = (struct drm_info_node *) m->private;
 213         struct drm_device *dev = node->minor->dev;
 214         drm_i915_private_t *dev_priv = dev->dev_private;
 215         int i;
 216
 217         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 218         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 219         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 220                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 221
 222                 if (obj == NULL) {
 223                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 224                 } else {
 225                         struct drm_i915_gem_object *obj_priv;
 226
 227                         obj_priv = obj->driver_private;
 228                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 229                                    "%08x %08zx %08x %s %08x %08x %d",
 230                                    i, obj, get_pin_flag(obj_priv),
 231                                    obj_priv->gtt_offset,
 232                                    obj->size, obj_priv->stride,
 233                                    get_tiling_flag(obj_priv),
 234                                    obj->read_domains, obj->write_domain,
 235                                    obj_priv->last_rendering_seqno);
 236                         if (obj->name)
 237                                 seq_printf(m, " (name: %d)", obj->name);
 238                         seq_printf(m, "\n");
 239                 }
 240         }
 241
 242         return 0;
 243 }
 244
 245 static int i915_hws_info(struct seq_file *m, void *data)
 246 {
 247         struct drm_info_node *node = (struct drm_info_node *) m->private;
 248         struct drm_device *dev = node->minor->dev;
 249         drm_i915_private_t *dev_priv = dev->dev_private;
 250         int i;
 251         volatile u32 *hws;
 252
 253         hws = (volatile u32 *)dev_priv->hw_status_page;
 254         if (hws == NULL)
 255                 return 0;
 256
 257         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 258                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 259                            i * 4,
 260                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 261         }
 262         return 0;
 263 }
 264
 265 static void i915_dump_pages(struct seq_file *m, struct page **pages, int page_count)
 266 {
 267         int page, i;
 268         uint32_t *mem;
 269
 270         for (page = 0; page < page_count; page++) {
 271                 mem = kmap_atomic(pages[page], KM_USER0);
 272                 for (i = 0; i < PAGE_SIZE; i += 4)
 273                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 274                 kunmap_atomic(pages[page], KM_USER0);
 275         }
 276 }
 277
 278 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 279 {
 280         struct drm_info_node *node = (struct drm_info_node *) m->private;
 281         struct drm_device *dev = node->minor->dev;
 282         drm_i915_private_t *dev_priv = dev->dev_private;
 283         struct drm_gem_object *obj;
 284         struct drm_i915_gem_object *obj_priv;
 285         int ret;
 286
 287         spin_lock(&dev_priv->mm.active_list_lock);
 288
 289         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) {
 290                 obj = obj_priv->obj;
 291                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 292                     ret = i915_gem_object_get_pages(obj);
 293                     if (ret) {
 294                             DRM_ERROR("Failed to get pages: %d\n", ret);
 295                             spin_unlock(&dev_priv->mm.active_list_lock);
 296                             return ret;
 297                     }
 298
 299                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj_priv->gtt_offset);
 300                     i915_dump_pages(m, obj_priv->pages, obj->size / PAGE_SIZE);
 301
 302                     i915_gem_object_put_pages(obj);
 303                 }
 304         }
 305
 306         spin_unlock(&dev_priv->mm.active_list_lock);
 307
 308         return 0;
 309 }
 310
 311 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 312 {
 313         struct drm_info_node *node = (struct drm_info_node *) m->private;
 314         struct drm_device *dev = node->minor->dev;
 315         drm_i915_private_t *dev_priv = dev->dev_private;
 316         u8 *virt;
 317         uint32_t *ptr, off;
 318
 319         if (!dev_priv->ring.ring_obj) {
 320                 seq_printf(m, "No ringbuffer setup\n");
 321                 return 0;
 322         }
 323
 324         virt = dev_priv->ring.virtual_start;
 325
 326         for (off = 0; off < dev_priv->ring.Size; off += 4) {
 327                 ptr = (uint32_t *)(virt + off);
 328                 seq_printf(m, "%08x :  %08x\n", off, *ptr);
 329         }
 330
 331         return 0;
 332 }
 333
 334 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 335 {
 336         struct drm_info_node *node = (struct drm_info_node *) m->private;
 337         struct drm_device *dev = node->minor->dev;
 338         drm_i915_private_t *dev_priv = dev->dev_private;
 339         unsigned int head, tail;
 340
 341         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 342         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 343
 344         seq_printf(m, "RingHead :  %08x\n", head);
 345         seq_printf(m, "RingTail :  %08x\n", tail);
 346         seq_printf(m, "RingSize :  %08lx\n", dev_priv->ring.Size);
 347         seq_printf(m, "Acthd :     %08x\n", I915_READ(IS_I965G(dev) ? ACTHD_I965 : ACTHD));
 348
 349         return 0;
 350 }
 351
 352 static int i915_error_state(struct seq_file *m, void *unused)
 353 {
 354         struct drm_info_node *node = (struct drm_info_node *) m->private;
 355         struct drm_device *dev = node->minor->dev;
 356         drm_i915_private_t *dev_priv = dev->dev_private;
 357         struct drm_i915_error_state *error;
 358         unsigned long flags;
 359
 360         spin_lock_irqsave(&dev_priv->error_lock, flags);
 361         if (!dev_priv->first_error) {
 362                 seq_printf(m, "no error state collected\n");
 363                 goto out;
 364         }
 365
 366         error = dev_priv->first_error;
 367
 368         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 369                    error->time.tv_usec);
 370         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 371         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 372         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 373         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 374         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 375         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 376         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 377         if (IS_I965G(dev)) {
 378                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 379                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 380         }
 381
 382 out:
 383         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 384
 385         return 0;
 386 }
 387
 388 static int i915_registers_info(struct seq_file *m, void *data) {
 389         struct drm_info_node *node = (struct drm_info_node *) m->private;
 390         struct drm_device *dev = node->minor->dev;
 391         drm_i915_private_t *dev_priv = dev->dev_private;
 392         uint32_t reg;
 393
 394 #define DUMP_RANGE(start, end) \
 395         for (reg=start; reg < end; reg += 4) \
 396         seq_printf(m, "%08x\t%08x\n", reg, I915_READ(reg));
 397
 398         DUMP_RANGE(0x00000, 0x00fff);   /* VGA registers */
 399         DUMP_RANGE(0x02000, 0x02fff);   /* instruction, memory, interrupt control registers */
 400         DUMP_RANGE(0x03000, 0x031ff);   /* FENCE and PPGTT control registers */
 401         DUMP_RANGE(0x03200, 0x03fff);   /* frame buffer compression registers */
 402         DUMP_RANGE(0x05000, 0x05fff);   /* I/O control registers */
 403         DUMP_RANGE(0x06000, 0x06fff);   /* clock control registers */
 404         DUMP_RANGE(0x07000, 0x07fff);   /* 3D internal debug registers */
 405         DUMP_RANGE(0x07400, 0x088ff);   /* GPE debug registers */
 406         DUMP_RANGE(0x0a000, 0x0afff);   /* display palette registers */
 407         DUMP_RANGE(0x10000, 0x13fff);   /* MMIO MCHBAR */
 408         DUMP_RANGE(0x30000, 0x3ffff);   /* overlay registers */
 409         DUMP_RANGE(0x60000, 0x6ffff);   /* display engine pipeline registers */
 410         DUMP_RANGE(0x70000, 0x72fff);   /* display and cursor registers */
 411         DUMP_RANGE(0x73000, 0x73fff);   /* performance counters */
 412
 413         return 0;
 414 }
 415
 416 static int
 417 i915_wedged_open(struct inode *inode,
 418                  struct file *filp)
 419 {
 420         filp->private_data = inode->i_private;
 421         return 0;
 422 }
 423
 424 static ssize_t
 425 i915_wedged_read(struct file *filp,
 426                  char __user *ubuf,
 427                  size_t max,
 428                  loff_t *ppos)
 429 {
 430         struct drm_device *dev = filp->private_data;
 431         drm_i915_private_t *dev_priv = dev->dev_private;
 432         char buf[80];
 433         int len;
 434
 435         len = snprintf(buf, sizeof (buf),
 436                        "wedged :  %d\n",
 437                        atomic_read(&dev_priv->mm.wedged));
 438
 439         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 440 }
 441
 442 static ssize_t
 443 i915_wedged_write(struct file *filp,
 444                   const char __user *ubuf,
 445                   size_t cnt,
 446                   loff_t *ppos)
 447 {
 448         struct drm_device *dev = filp->private_data;
 449         drm_i915_private_t *dev_priv = dev->dev_private;
 450         char buf[20];
 451         int val = 1;
 452
 453         if (cnt > 0) {
 454                 if (cnt > sizeof (buf) - 1)
 455                         return -EINVAL;
 456
 457                 if (copy_from_user(buf, ubuf, cnt))
 458                         return -EFAULT;
 459                 buf[cnt] = 0;
 460
 461                 val = simple_strtoul(buf, NULL, 0);
 462         }
 463
 464         DRM_INFO("Manually setting wedged to %d\n", val);
 465
 466         atomic_set(&dev_priv->mm.wedged, val);
 467         if (val) {
 468                 DRM_WAKEUP(&dev_priv->irq_queue);
 469                 queue_work(dev_priv->wq, &dev_priv->error_work);
 470         }
 471
 472         return cnt;
 473 }
 474
 475 static const struct file_operations i915_wedged_fops = {
 476         .owner = THIS_MODULE,
 477         .open = i915_wedged_open,
 478         .read = i915_wedged_read,
 479         .write = i915_wedged_write,
 480 };
 481
 482 /* As the drm_debugfs_init() routines are called before dev->dev_private is
 483  * allocated we need to hook into the minor for release. */
 484 static int
 485 drm_add_fake_info_node(struct drm_minor *minor,
 486                        struct dentry *ent,
 487                        const void *key)
 488 {
 489         struct drm_info_node *node;
 490
 491         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
 492         if (node == NULL) {
 493                 debugfs_remove(ent);
 494                 return -ENOMEM;
 495         }
 496
 497         node->minor = minor;
 498         node->dent = ent;
 499         node->info_ent = (void *) key;
 500         list_add(&node->list, &minor->debugfs_nodes.list);
 501
 502         return 0;
 503 }
 504
 505 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
 506 {
 507         struct drm_device *dev = minor->dev;
 508         struct dentry *ent;
 509
 510         ent = debugfs_create_file("i915_wedged",
 511                                   S_IRUGO | S_IWUSR,
 512                                   root, dev,
 513                                   &i915_wedged_fops);
 514         if (IS_ERR(ent))
 515                 return PTR_ERR(ent);
 516
 517         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
 518 }
 519
 520 static struct drm_info_list i915_debugfs_list[] = {
 521         {"i915_regs", i915_registers_info, 0},
 522         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
 523         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
 524         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
 525         {"i915_gem_request", i915_gem_request_info, 0},
 526         {"i915_gem_seqno", i915_gem_seqno_info, 0},
 527         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
 528         {"i915_gem_interrupt", i915_interrupt_info, 0},
 529         {"i915_gem_hws", i915_hws_info, 0},
 530         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
 531         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
 532         {"i915_batchbuffers", i915_batchbuffer_info, 0},
 533         {"i915_error_state", i915_error_state, 0},
 534 };
 535 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
 536
 537 int i915_debugfs_init(struct drm_minor *minor)
 538 {
 539         int ret;
 540
 541         ret = i915_wedged_create(minor->debugfs_root, minor);
 542         if (ret)
 543                 return ret;
 544
 545         return drm_debugfs_create_files(i915_debugfs_list,
 546                                         I915_DEBUGFS_ENTRIES,
 547                                         minor->debugfs_root, minor);
 548 }
 549
 550 void i915_debugfs_cleanup(struct drm_minor *minor)
 551 {
 552         drm_debugfs_remove_files(i915_debugfs_list,
 553                                  I915_DEBUGFS_ENTRIES, minor);
 554         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
 555                                  1, minor);
 556 }
 557
 558 #endif /* CONFIG_DEBUG_FS */