2 * Copyright © 2008 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
25 * Keith Packard <keithp@keithp.com>
29 #include <linux/seq_file.h>
30 #include <linux/debugfs.h>
36 #define DRM_I915_RING_DEBUG 1
39 #if defined(CONFIG_DEBUG_FS)
42 #define FLUSHING_LIST 2
43 #define INACTIVE_LIST 3
45 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
47 if (obj_priv->user_pin_count > 0)
49 else if (obj_priv->pin_count > 0)
55 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
57 switch (obj_priv->tiling_mode) {
59 case I915_TILING_NONE: return " ";
60 case I915_TILING_X: return "X";
61 case I915_TILING_Y: return "Y";
65 static int i915_gem_object_list_info(struct seq_file *m, void *data)
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;
77 seq_printf(m, "Active:\n");
78 lock = &dev_priv->mm.active_list_lock;
79 head = &dev_priv->mm.active_list;
82 seq_printf(m, "Inactive:\n");
83 head = &dev_priv->mm.inactive_list;
86 seq_printf(m, "Flushing:\n");
87 head = &dev_priv->mm.flushing_list;
90 DRM_INFO("Ooops, unexpected list\n");
96 list_for_each_entry(obj_priv, head, list)
98 struct drm_gem_object *obj = obj_priv->obj;
100 seq_printf(m, " %p: %s %8zd %08x %08x %d%s%s",
102 get_pin_flag(obj_priv),
104 obj->read_domains, obj->write_domain,
105 obj_priv->last_rendering_seqno,
106 obj_priv->dirty ? " dirty" : "",
107 obj_priv->madv == I915_MADV_DONTNEED ? " purgeable" : "");
110 seq_printf(m, " (name: %d)", obj->name);
111 if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
112 seq_printf(m, " (fence: %d)", obj_priv->fence_reg);
113 if (obj_priv->gtt_space != NULL)
114 seq_printf(m, " (gtt_offset: %08x)", obj_priv->gtt_offset);
124 static int i915_gem_request_info(struct seq_file *m, void *data)
126 struct drm_info_node *node = (struct drm_info_node *) m->private;
127 struct drm_device *dev = node->minor->dev;
128 drm_i915_private_t *dev_priv = dev->dev_private;
129 struct drm_i915_gem_request *gem_request;
131 seq_printf(m, "Request:\n");
132 list_for_each_entry(gem_request, &dev_priv->mm.request_list, list) {
133 seq_printf(m, " %d @ %d\n",
135 (int) (jiffies - gem_request->emitted_jiffies));
140 static int i915_gem_seqno_info(struct seq_file *m, void *data)
142 struct drm_info_node *node = (struct drm_info_node *) m->private;
143 struct drm_device *dev = node->minor->dev;
144 drm_i915_private_t *dev_priv = dev->dev_private;
146 if (dev_priv->hw_status_page != NULL) {
147 seq_printf(m, "Current sequence: %d\n",
148 i915_get_gem_seqno(dev));
150 seq_printf(m, "Current sequence: hws uninitialized\n");
152 seq_printf(m, "Waiter sequence: %d\n",
153 dev_priv->mm.waiting_gem_seqno);
154 seq_printf(m, "IRQ sequence: %d\n", dev_priv->mm.irq_gem_seqno);
159 static int i915_interrupt_info(struct seq_file *m, void *data)
161 struct drm_info_node *node = (struct drm_info_node *) m->private;
162 struct drm_device *dev = node->minor->dev;
163 drm_i915_private_t *dev_priv = dev->dev_private;
165 if (!IS_IRONLAKE(dev)) {
166 seq_printf(m, "Interrupt enable: %08x\n",
168 seq_printf(m, "Interrupt identity: %08x\n",
170 seq_printf(m, "Interrupt mask: %08x\n",
172 seq_printf(m, "Pipe A stat: %08x\n",
173 I915_READ(PIPEASTAT));
174 seq_printf(m, "Pipe B stat: %08x\n",
175 I915_READ(PIPEBSTAT));
177 seq_printf(m, "North Display Interrupt enable: %08x\n",
179 seq_printf(m, "North Display Interrupt identity: %08x\n",
181 seq_printf(m, "North Display Interrupt mask: %08x\n",
183 seq_printf(m, "South Display Interrupt enable: %08x\n",
185 seq_printf(m, "South Display Interrupt identity: %08x\n",
187 seq_printf(m, "South Display Interrupt mask: %08x\n",
189 seq_printf(m, "Graphics Interrupt enable: %08x\n",
191 seq_printf(m, "Graphics Interrupt identity: %08x\n",
193 seq_printf(m, "Graphics Interrupt mask: %08x\n",
196 seq_printf(m, "Interrupts received: %d\n",
197 atomic_read(&dev_priv->irq_received));
198 if (dev_priv->hw_status_page != NULL) {
199 seq_printf(m, "Current sequence: %d\n",
200 i915_get_gem_seqno(dev));
202 seq_printf(m, "Current sequence: hws uninitialized\n");
204 seq_printf(m, "Waiter sequence: %d\n",
205 dev_priv->mm.waiting_gem_seqno);
206 seq_printf(m, "IRQ sequence: %d\n",
207 dev_priv->mm.irq_gem_seqno);
211 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
213 struct drm_info_node *node = (struct drm_info_node *) m->private;
214 struct drm_device *dev = node->minor->dev;
215 drm_i915_private_t *dev_priv = dev->dev_private;
218 seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
219 seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
220 for (i = 0; i < dev_priv->num_fence_regs; i++) {
221 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
224 seq_printf(m, "Fenced object[%2d] = unused\n", i);
226 struct drm_i915_gem_object *obj_priv;
228 obj_priv = obj->driver_private;
229 seq_printf(m, "Fenced object[%2d] = %p: %s "
230 "%08x %08zx %08x %s %08x %08x %d",
231 i, obj, get_pin_flag(obj_priv),
232 obj_priv->gtt_offset,
233 obj->size, obj_priv->stride,
234 get_tiling_flag(obj_priv),
235 obj->read_domains, obj->write_domain,
236 obj_priv->last_rendering_seqno);
238 seq_printf(m, " (name: %d)", obj->name);
246 static int i915_hws_info(struct seq_file *m, void *data)
248 struct drm_info_node *node = (struct drm_info_node *) m->private;
249 struct drm_device *dev = node->minor->dev;
250 drm_i915_private_t *dev_priv = dev->dev_private;
254 hws = (volatile u32 *)dev_priv->hw_status_page;
258 for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
259 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
261 hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
266 static void i915_dump_pages(struct seq_file *m, struct page **pages, int page_count)
271 for (page = 0; page < page_count; page++) {
272 mem = kmap_atomic(pages[page], KM_USER0);
273 for (i = 0; i < PAGE_SIZE; i += 4)
274 seq_printf(m, "%08x : %08x\n", i, mem[i / 4]);
275 kunmap_atomic(pages[page], KM_USER0);
279 static int i915_batchbuffer_info(struct seq_file *m, void *data)
281 struct drm_info_node *node = (struct drm_info_node *) m->private;
282 struct drm_device *dev = node->minor->dev;
283 drm_i915_private_t *dev_priv = dev->dev_private;
284 struct drm_gem_object *obj;
285 struct drm_i915_gem_object *obj_priv;
288 spin_lock(&dev_priv->mm.active_list_lock);
290 list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) {
292 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
293 ret = i915_gem_object_get_pages(obj);
295 DRM_ERROR("Failed to get pages: %d\n", ret);
296 spin_unlock(&dev_priv->mm.active_list_lock);
300 seq_printf(m, "--- gtt_offset = 0x%08x\n", obj_priv->gtt_offset);
301 i915_dump_pages(m, obj_priv->pages, obj->size / PAGE_SIZE);
303 i915_gem_object_put_pages(obj);
307 spin_unlock(&dev_priv->mm.active_list_lock);
312 static int i915_ringbuffer_data(struct seq_file *m, void *data)
314 struct drm_info_node *node = (struct drm_info_node *) m->private;
315 struct drm_device *dev = node->minor->dev;
316 drm_i915_private_t *dev_priv = dev->dev_private;
320 if (!dev_priv->ring.ring_obj) {
321 seq_printf(m, "No ringbuffer setup\n");
325 virt = dev_priv->ring.virtual_start;
327 for (off = 0; off < dev_priv->ring.Size; off += 4) {
328 ptr = (uint32_t *)(virt + off);
329 seq_printf(m, "%08x : %08x\n", off, *ptr);
335 static int i915_ringbuffer_info(struct seq_file *m, void *data)
337 struct drm_info_node *node = (struct drm_info_node *) m->private;
338 struct drm_device *dev = node->minor->dev;
339 drm_i915_private_t *dev_priv = dev->dev_private;
340 unsigned int head, tail;
342 head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
343 tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
345 seq_printf(m, "RingHead : %08x\n", head);
346 seq_printf(m, "RingTail : %08x\n", tail);
347 seq_printf(m, "RingSize : %08lx\n", dev_priv->ring.Size);
348 seq_printf(m, "Acthd : %08x\n", I915_READ(IS_I965G(dev) ? ACTHD_I965 : ACTHD));
353 static int i915_error_state(struct seq_file *m, void *unused)
355 struct drm_info_node *node = (struct drm_info_node *) m->private;
356 struct drm_device *dev = node->minor->dev;
357 drm_i915_private_t *dev_priv = dev->dev_private;
358 struct drm_i915_error_state *error;
361 spin_lock_irqsave(&dev_priv->error_lock, flags);
362 if (!dev_priv->first_error) {
363 seq_printf(m, "no error state collected\n");
367 error = dev_priv->first_error;
369 seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
370 error->time.tv_usec);
371 seq_printf(m, "EIR: 0x%08x\n", error->eir);
372 seq_printf(m, " PGTBL_ER: 0x%08x\n", error->pgtbl_er);
373 seq_printf(m, " INSTPM: 0x%08x\n", error->instpm);
374 seq_printf(m, " IPEIR: 0x%08x\n", error->ipeir);
375 seq_printf(m, " IPEHR: 0x%08x\n", error->ipehr);
376 seq_printf(m, " INSTDONE: 0x%08x\n", error->instdone);
377 seq_printf(m, " ACTHD: 0x%08x\n", error->acthd);
379 seq_printf(m, " INSTPS: 0x%08x\n", error->instps);
380 seq_printf(m, " INSTDONE1: 0x%08x\n", error->instdone1);
384 spin_unlock_irqrestore(&dev_priv->error_lock, flags);
389 static int i915_registers_info(struct seq_file *m, void *data) {
390 struct drm_info_node *node = (struct drm_info_node *) m->private;
391 struct drm_device *dev = node->minor->dev;
392 drm_i915_private_t *dev_priv = dev->dev_private;
395 #define DUMP_RANGE(start, end) \
396 for (reg=start; reg < end; reg += 4) \
397 seq_printf(m, "%08x\t%08x\n", reg, I915_READ(reg));
399 DUMP_RANGE(0x00000, 0x00fff); /* VGA registers */
400 DUMP_RANGE(0x02000, 0x02fff); /* instruction, memory, interrupt control registers */
401 DUMP_RANGE(0x03000, 0x031ff); /* FENCE and PPGTT control registers */
402 DUMP_RANGE(0x03200, 0x03fff); /* frame buffer compression registers */
403 DUMP_RANGE(0x05000, 0x05fff); /* I/O control registers */
404 DUMP_RANGE(0x06000, 0x06fff); /* clock control registers */
405 DUMP_RANGE(0x07000, 0x07fff); /* 3D internal debug registers */
406 DUMP_RANGE(0x07400, 0x088ff); /* GPE debug registers */
407 DUMP_RANGE(0x0a000, 0x0afff); /* display palette registers */
408 DUMP_RANGE(0x10000, 0x13fff); /* MMIO MCHBAR */
409 DUMP_RANGE(0x30000, 0x3ffff); /* overlay registers */
410 DUMP_RANGE(0x60000, 0x6ffff); /* display engine pipeline registers */
411 DUMP_RANGE(0x70000, 0x72fff); /* display and cursor registers */
412 DUMP_RANGE(0x73000, 0x73fff); /* performance counters */
418 i915_wedged_open(struct inode *inode,
421 filp->private_data = inode->i_private;
426 i915_wedged_read(struct file *filp,
431 struct drm_device *dev = filp->private_data;
432 drm_i915_private_t *dev_priv = dev->dev_private;
436 len = snprintf(buf, sizeof (buf),
438 atomic_read(&dev_priv->mm.wedged));
440 return simple_read_from_buffer(ubuf, max, ppos, buf, len);
444 i915_wedged_write(struct file *filp,
445 const char __user *ubuf,
449 struct drm_device *dev = filp->private_data;
450 drm_i915_private_t *dev_priv = dev->dev_private;
455 if (cnt > sizeof (buf) - 1)
458 if (copy_from_user(buf, ubuf, cnt))
462 val = simple_strtoul(buf, NULL, 0);
465 DRM_INFO("Manually setting wedged to %d\n", val);
467 atomic_set(&dev_priv->mm.wedged, val);
469 DRM_WAKEUP(&dev_priv->irq_queue);
470 queue_work(dev_priv->wq, &dev_priv->error_work);
476 static const struct file_operations i915_wedged_fops = {
477 .owner = THIS_MODULE,
478 .open = i915_wedged_open,
479 .read = i915_wedged_read,
480 .write = i915_wedged_write,
483 /* As the drm_debugfs_init() routines are called before dev->dev_private is
484 * allocated we need to hook into the minor for release. */
486 drm_add_fake_info_node(struct drm_minor *minor,
490 struct drm_info_node *node;
492 node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
500 node->info_ent = (void *) key;
501 list_add(&node->list, &minor->debugfs_nodes.list);
506 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
508 struct drm_device *dev = minor->dev;
511 ent = debugfs_create_file("i915_wedged",
518 return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
521 static struct drm_info_list i915_debugfs_list[] = {
522 {"i915_regs", i915_registers_info, 0},
523 {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
524 {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
525 {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
526 {"i915_gem_request", i915_gem_request_info, 0},
527 {"i915_gem_seqno", i915_gem_seqno_info, 0},
528 {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
529 {"i915_gem_interrupt", i915_interrupt_info, 0},
530 {"i915_gem_hws", i915_hws_info, 0},
531 {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
532 {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
533 {"i915_batchbuffers", i915_batchbuffer_info, 0},
534 {"i915_error_state", i915_error_state, 0},
536 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
538 int i915_debugfs_init(struct drm_minor *minor)
542 ret = i915_wedged_create(minor->debugfs_root, minor);
546 return drm_debugfs_create_files(i915_debugfs_list,
547 I915_DEBUGFS_ENTRIES,
548 minor->debugfs_root, minor);
551 void i915_debugfs_cleanup(struct drm_minor *minor)
553 drm_debugfs_remove_files(i915_debugfs_list,
554 I915_DEBUGFS_ENTRIES, minor);
555 drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
559 #endif /* CONFIG_DEBUG_FS */