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",
102 get_pin_flag(obj_priv
),
104 obj
->read_domains
, obj
->write_domain
,
105 obj_priv
->last_rendering_seqno
,
106 obj_priv
->dirty
? "dirty" : "");
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
);
123 static int i915_gem_request_info(struct seq_file
*m
, void *data
)
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
;
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",
134 (int) (jiffies
- gem_request
->emitted_jiffies
));
139 static int i915_gem_seqno_info(struct seq_file
*m
, void *data
)
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
;
145 if (dev_priv
->hw_status_page
!= NULL
) {
146 seq_printf(m
, "Current sequence: %d\n",
147 i915_get_gem_seqno(dev
));
149 seq_printf(m
, "Current sequence: hws uninitialized\n");
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
);
158 static int i915_interrupt_info(struct seq_file
*m
, void *data
)
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
;
164 if (!IS_IGDNG(dev
)) {
165 seq_printf(m
, "Interrupt enable: %08x\n",
167 seq_printf(m
, "Interrupt identity: %08x\n",
169 seq_printf(m
, "Interrupt mask: %08x\n",
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
));
176 seq_printf(m
, "North Display Interrupt enable: %08x\n",
178 seq_printf(m
, "North Display Interrupt identity: %08x\n",
180 seq_printf(m
, "North Display Interrupt mask: %08x\n",
182 seq_printf(m
, "South Display Interrupt enable: %08x\n",
184 seq_printf(m
, "South Display Interrupt identity: %08x\n",
186 seq_printf(m
, "South Display Interrupt mask: %08x\n",
188 seq_printf(m
, "Graphics Interrupt enable: %08x\n",
190 seq_printf(m
, "Graphics Interrupt identity: %08x\n",
192 seq_printf(m
, "Graphics Interrupt mask: %08x\n",
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
));
201 seq_printf(m
, "Current sequence: hws uninitialized\n");
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
);
210 static int i915_gem_fence_regs_info(struct seq_file
*m
, void *data
)
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
;
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
;
223 seq_printf(m
, "Fenced object[%2d] = unused\n", i
);
225 struct drm_i915_gem_object
*obj_priv
;
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
);
237 seq_printf(m
, " (name: %d)", obj
->name
);
245 static int i915_hws_info(struct seq_file
*m
, void *data
)
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
;
253 hws
= (volatile u32
*)dev_priv
->hw_status_page
;
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",
260 hws
[i
], hws
[i
+ 1], hws
[i
+ 2], hws
[i
+ 3]);
265 static void i915_dump_pages(struct seq_file
*m
, struct page
**pages
, int page_count
)
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
);
278 static int i915_batchbuffer_info(struct seq_file
*m
, void *data
)
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
;
287 spin_lock(&dev_priv
->mm
.active_list_lock
);
289 list_for_each_entry(obj_priv
, &dev_priv
->mm
.active_list
, list
) {
291 if (obj
->read_domains
& I915_GEM_DOMAIN_COMMAND
) {
292 ret
= i915_gem_object_get_pages(obj
);
294 DRM_ERROR("Failed to get pages: %d\n", ret
);
295 spin_unlock(&dev_priv
->mm
.active_list_lock
);
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
);
302 i915_gem_object_put_pages(obj
);
306 spin_unlock(&dev_priv
->mm
.active_list_lock
);
311 static int i915_ringbuffer_data(struct seq_file
*m
, void *data
)
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
;
319 if (!dev_priv
->ring
.ring_obj
) {
320 seq_printf(m
, "No ringbuffer setup\n");
324 virt
= dev_priv
->ring
.virtual_start
;
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
);
334 static int i915_ringbuffer_info(struct seq_file
*m
, void *data
)
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
;
341 head
= I915_READ(PRB0_HEAD
) & HEAD_ADDR
;
342 tail
= I915_READ(PRB0_TAIL
) & TAIL_ADDR
;
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
));
352 static int i915_error_state(struct seq_file
*m
, void *unused
)
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
;
360 spin_lock_irqsave(&dev_priv
->error_lock
, flags
);
361 if (!dev_priv
->first_error
) {
362 seq_printf(m
, "no error state collected\n");
366 error
= dev_priv
->first_error
;
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
);
378 seq_printf(m
, " INSTPS: 0x%08x\n", error
->instps
);
379 seq_printf(m
, " INSTDONE1: 0x%08x\n", error
->instdone1
);
383 spin_unlock_irqrestore(&dev_priv
->error_lock
, flags
);
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
;
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));
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 */
417 i915_wedged_open(struct inode
*inode
,
420 filp
->private_data
= inode
->i_private
;
425 i915_wedged_read(struct file
*filp
,
430 struct drm_device
*dev
= filp
->private_data
;
431 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
435 len
= snprintf(buf
, sizeof (buf
),
437 atomic_read(&dev_priv
->mm
.wedged
));
439 return simple_read_from_buffer(ubuf
, max
, ppos
, buf
, len
);
443 i915_wedged_write(struct file
*filp
,
444 const char __user
*ubuf
,
448 struct drm_device
*dev
= filp
->private_data
;
449 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
454 if (cnt
> sizeof (buf
) - 1)
457 if (copy_from_user(buf
, ubuf
, cnt
))
461 val
= simple_strtoul(buf
, NULL
, 0);
464 DRM_INFO("Manually setting wedged to %d\n", val
);
466 atomic_set(&dev_priv
->mm
.wedged
, val
);
468 DRM_WAKEUP(&dev_priv
->irq_queue
);
469 queue_work(dev_priv
->wq
, &dev_priv
->error_work
);
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
,
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. */
485 drm_add_fake_info_node(struct drm_minor
*minor
,
489 struct drm_info_node
*node
;
491 node
= kmalloc(sizeof(struct drm_info_node
), GFP_KERNEL
);
499 node
->info_ent
= (void *) key
;
500 list_add(&node
->list
, &minor
->debugfs_nodes
.list
);
505 static int i915_wedged_create(struct dentry
*root
, struct drm_minor
*minor
)
507 struct drm_device
*dev
= minor
->dev
;
510 ent
= debugfs_create_file("i915_wedged",
517 return drm_add_fake_info_node(minor
, ent
, &i915_wedged_fops
);
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},
535 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
537 int i915_debugfs_init(struct drm_minor
*minor
)
541 ret
= i915_wedged_create(minor
->debugfs_root
, minor
);
545 return drm_debugfs_create_files(i915_debugfs_list
,
546 I915_DEBUGFS_ENTRIES
,
547 minor
->debugfs_root
, minor
);
550 void i915_debugfs_cleanup(struct drm_minor
*minor
)
554 drm_debugfs_remove_files(i915_debugfs_list
,
555 I915_DEBUGFS_ENTRIES
, minor
);
557 key
= &i915_wedged_fops
;
558 drm_debugfs_remove_files((struct drm_info_list
*) &key
, 1, minor
);
561 #endif /* CONFIG_DEBUG_FS */