1 /* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
2 */
3 /*
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
31 #include <drm/drmP.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/drm_fb_helper.h>
34 #include "intel_drv.h"
35 #include <drm/i915_drm.h>
36 #include "i915_drv.h"
37 #include "i915_trace.h"
38 #include <linux/pci.h>
39 #include <linux/vgaarb.h>
40 #include <linux/acpi.h>
41 #include <linux/pnp.h>
42 #include <linux/vga_switcheroo.h>
43 #include <linux/slab.h>
44 #include <acpi/video.h>
45 #include <asm/pat.h>
46
47 #define LP_RING(d) (&((struct drm_i915_private *)(d))->ring[RCS])
48
49 #define BEGIN_LP_RING(n) \
50 intel_ring_begin(LP_RING(dev_priv), (n))
51
52 #define OUT_RING(x) \
53 intel_ring_emit(LP_RING(dev_priv), x)
54
55 #define ADVANCE_LP_RING() \
56 intel_ring_advance(LP_RING(dev_priv))
57
58 /**
59 * Lock test for when it's just for synchronization of ring access.
60 *
61 * In that case, we don't need to do it when GEM is initialized as nobody else
62 * has access to the ring.
63 */
64 #define RING_LOCK_TEST_WITH_RETURN(dev, file) do { \
65 if (LP_RING(dev->dev_private)->obj == NULL) \
66 LOCK_TEST_WITH_RETURN(dev, file); \
67 } while (0)
68
69 static inline u32
intel_read_legacy_status_page(struct drm_i915_private * dev_priv,int reg)70 intel_read_legacy_status_page(struct drm_i915_private *dev_priv, int reg)
71 {
72 if (I915_NEED_GFX_HWS(dev_priv->dev))
73 return ioread32(dev_priv->dri1.gfx_hws_cpu_addr + reg);
74 else
75 return intel_read_status_page(LP_RING(dev_priv), reg);
76 }
77
78 #define READ_HWSP(dev_priv, reg) intel_read_legacy_status_page(dev_priv, reg)
79 #define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
80 #define I915_BREADCRUMB_INDEX 0x21
81
i915_update_dri1_breadcrumb(struct drm_device * dev)82 void i915_update_dri1_breadcrumb(struct drm_device *dev)
83 {
84 drm_i915_private_t *dev_priv = dev->dev_private;
85 struct drm_i915_master_private *master_priv;
86
87 if (dev->primary->master) {
88 master_priv = dev->primary->master->driver_priv;
89 if (master_priv->sarea_priv)
90 master_priv->sarea_priv->last_dispatch =
91 READ_BREADCRUMB(dev_priv);
92 }
93 }
94
i915_write_hws_pga(struct drm_device * dev)95 static void i915_write_hws_pga(struct drm_device *dev)
96 {
97 drm_i915_private_t *dev_priv = dev->dev_private;
98 u32 addr;
99
100 addr = dev_priv->status_page_dmah->busaddr;
101 if (INTEL_INFO(dev)->gen >= 4)
102 addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0;
103 I915_WRITE(HWS_PGA, addr);
104 }
105
106 /**
107 * Frees the hardware status page, whether it's a physical address or a virtual
108 * address set up by the X Server.
109 */
i915_free_hws(struct drm_device * dev)110 static void i915_free_hws(struct drm_device *dev)
111 {
112 drm_i915_private_t *dev_priv = dev->dev_private;
113 struct intel_ring_buffer *ring = LP_RING(dev_priv);
114
115 if (dev_priv->status_page_dmah) {
116 drm_pci_free(dev, dev_priv->status_page_dmah);
117 dev_priv->status_page_dmah = NULL;
118 }
119
120 if (ring->status_page.gfx_addr) {
121 ring->status_page.gfx_addr = 0;
122 iounmap(dev_priv->dri1.gfx_hws_cpu_addr);
123 }
124
125 /* Need to rewrite hardware status page */
126 I915_WRITE(HWS_PGA, 0x1ffff000);
127 }
128
i915_kernel_lost_context(struct drm_device * dev)129 void i915_kernel_lost_context(struct drm_device * dev)
130 {
131 drm_i915_private_t *dev_priv = dev->dev_private;
132 struct drm_i915_master_private *master_priv;
133 struct intel_ring_buffer *ring = LP_RING(dev_priv);
134
135 /*
136 * We should never lose context on the ring with modesetting
137 * as we don't expose it to userspace
138 */
139 if (drm_core_check_feature(dev, DRIVER_MODESET))
140 return;
141
142 ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
143 ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
144 ring->space = ring->head - (ring->tail + I915_RING_FREE_SPACE);
145 if (ring->space < 0)
146 ring->space += ring->size;
147
148 if (!dev->primary->master)
149 return;
150
151 master_priv = dev->primary->master->driver_priv;
152 if (ring->head == ring->tail && master_priv->sarea_priv)
153 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
154 }
155
i915_dma_cleanup(struct drm_device * dev)156 static int i915_dma_cleanup(struct drm_device * dev)
157 {
158 drm_i915_private_t *dev_priv = dev->dev_private;
159 int i;
160
161 /* Make sure interrupts are disabled here because the uninstall ioctl
162 * may not have been called from userspace and after dev_private
163 * is freed, it's too late.
164 */
165 if (dev->irq_enabled)
166 drm_irq_uninstall(dev);
167
168 mutex_lock(&dev->struct_mutex);
169 for (i = 0; i < I915_NUM_RINGS; i++)
170 intel_cleanup_ring_buffer(&dev_priv->ring[i]);
171 mutex_unlock(&dev->struct_mutex);
172
173 /* Clear the HWS virtual address at teardown */
174 if (I915_NEED_GFX_HWS(dev))
175 i915_free_hws(dev);
176
177 return 0;
178 }
179
i915_initialize(struct drm_device * dev,drm_i915_init_t * init)180 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
181 {
182 drm_i915_private_t *dev_priv = dev->dev_private;
183 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
184 int ret;
185
186 master_priv->sarea = drm_getsarea(dev);
187 if (master_priv->sarea) {
188 master_priv->sarea_priv = (drm_i915_sarea_t *)
189 ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
190 } else {
191 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
192 }
193
194 if (init->ring_size != 0) {
195 if (LP_RING(dev_priv)->obj != NULL) {
196 i915_dma_cleanup(dev);
197 DRM_ERROR("Client tried to initialize ringbuffer in "
198 "GEM mode\n");
199 return -EINVAL;
200 }
201
202 ret = intel_render_ring_init_dri(dev,
203 init->ring_start,
204 init->ring_size);
205 if (ret) {
206 i915_dma_cleanup(dev);
207 return ret;
208 }
209 }
210
211 dev_priv->dri1.cpp = init->cpp;
212 dev_priv->dri1.back_offset = init->back_offset;
213 dev_priv->dri1.front_offset = init->front_offset;
214 dev_priv->dri1.current_page = 0;
215 if (master_priv->sarea_priv)
216 master_priv->sarea_priv->pf_current_page = 0;
217
218 /* Allow hardware batchbuffers unless told otherwise.
219 */
220 dev_priv->dri1.allow_batchbuffer = 1;
221
222 return 0;
223 }
224
i915_dma_resume(struct drm_device * dev)225 static int i915_dma_resume(struct drm_device * dev)
226 {
227 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
228 struct intel_ring_buffer *ring = LP_RING(dev_priv);
229
230 DRM_DEBUG_DRIVER("%s\n", __func__);
231
232 if (ring->virtual_start == NULL) {
233 DRM_ERROR("can not ioremap virtual address for"
234 " ring buffer\n");
235 return -ENOMEM;
236 }
237
238 /* Program Hardware Status Page */
239 if (!ring->status_page.page_addr) {
240 DRM_ERROR("Can not find hardware status page\n");
241 return -EINVAL;
242 }
243 DRM_DEBUG_DRIVER("hw status page @ %p\n",
244 ring->status_page.page_addr);
245 if (ring->status_page.gfx_addr != 0)
246 intel_ring_setup_status_page(ring);
247 else
248 i915_write_hws_pga(dev);
249
250 DRM_DEBUG_DRIVER("Enabled hardware status page\n");
251
252 return 0;
253 }
254
i915_dma_init(struct drm_device * dev,void * data,struct drm_file * file_priv)255 static int i915_dma_init(struct drm_device *dev, void *data,
256 struct drm_file *file_priv)
257 {
258 drm_i915_init_t *init = data;
259 int retcode = 0;
260
261 if (drm_core_check_feature(dev, DRIVER_MODESET))
262 return -ENODEV;
263
264 switch (init->func) {
265 case I915_INIT_DMA:
266 retcode = i915_initialize(dev, init);
267 break;
268 case I915_CLEANUP_DMA:
269 retcode = i915_dma_cleanup(dev);
270 break;
271 case I915_RESUME_DMA:
272 retcode = i915_dma_resume(dev);
273 break;
274 default:
275 retcode = -EINVAL;
276 break;
277 }
278
279 return retcode;
280 }
281
282 /* Implement basically the same security restrictions as hardware does
283 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
284 *
285 * Most of the calculations below involve calculating the size of a
286 * particular instruction. It's important to get the size right as
287 * that tells us where the next instruction to check is. Any illegal
288 * instruction detected will be given a size of zero, which is a
289 * signal to abort the rest of the buffer.
290 */
validate_cmd(int cmd)291 static int validate_cmd(int cmd)
292 {
293 switch (((cmd >> 29) & 0x7)) {
294 case 0x0:
295 switch ((cmd >> 23) & 0x3f) {
296 case 0x0:
297 return 1; /* MI_NOOP */
298 case 0x4:
299 return 1; /* MI_FLUSH */
300 default:
301 return 0; /* disallow everything else */
302 }
303 break;
304 case 0x1:
305 return 0; /* reserved */
306 case 0x2:
307 return (cmd & 0xff) + 2; /* 2d commands */
308 case 0x3:
309 if (((cmd >> 24) & 0x1f) <= 0x18)
310 return 1;
311
312 switch ((cmd >> 24) & 0x1f) {
313 case 0x1c:
314 return 1;
315 case 0x1d:
316 switch ((cmd >> 16) & 0xff) {
317 case 0x3:
318 return (cmd & 0x1f) + 2;
319 case 0x4:
320 return (cmd & 0xf) + 2;
321 default:
322 return (cmd & 0xffff) + 2;
323 }
324 case 0x1e:
325 if (cmd & (1 << 23))
326 return (cmd & 0xffff) + 1;
327 else
328 return 1;
329 case 0x1f:
330 if ((cmd & (1 << 23)) == 0) /* inline vertices */
331 return (cmd & 0x1ffff) + 2;
332 else if (cmd & (1 << 17)) /* indirect random */
333 if ((cmd & 0xffff) == 0)
334 return 0; /* unknown length, too hard */
335 else
336 return (((cmd & 0xffff) + 1) / 2) + 1;
337 else
338 return 2; /* indirect sequential */
339 default:
340 return 0;
341 }
342 default:
343 return 0;
344 }
345
346 return 0;
347 }
348
i915_emit_cmds(struct drm_device * dev,int * buffer,int dwords)349 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
350 {
351 drm_i915_private_t *dev_priv = dev->dev_private;
352 int i, ret;
353
354 if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->size - 8)
355 return -EINVAL;
356
357 for (i = 0; i < dwords;) {
358 int sz = validate_cmd(buffer[i]);
359 if (sz == 0 || i + sz > dwords)
360 return -EINVAL;
361 i += sz;
362 }
363
364 ret = BEGIN_LP_RING((dwords+1)&~1);
365 if (ret)
366 return ret;
367
368 for (i = 0; i < dwords; i++)
369 OUT_RING(buffer[i]);
370 if (dwords & 1)
371 OUT_RING(0);
372
373 ADVANCE_LP_RING();
374
375 return 0;
376 }
377
378 int
i915_emit_box(struct drm_device * dev,struct drm_clip_rect * box,int DR1,int DR4)379 i915_emit_box(struct drm_device *dev,
380 struct drm_clip_rect *box,
381 int DR1, int DR4)
382 {
383 struct drm_i915_private *dev_priv = dev->dev_private;
384 int ret;
385
386 if (box->y2 <= box->y1 || box->x2 <= box->x1 ||
387 box->y2 <= 0 || box->x2 <= 0) {
388 DRM_ERROR("Bad box %d,%d..%d,%d\n",
389 box->x1, box->y1, box->x2, box->y2);
390 return -EINVAL;
391 }
392
393 if (INTEL_INFO(dev)->gen >= 4) {
394 ret = BEGIN_LP_RING(4);
395 if (ret)
396 return ret;
397
398 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
399 OUT_RING((box->x1 & 0xffff) | (box->y1 << 16));
400 OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16));
401 OUT_RING(DR4);
402 } else {
403 ret = BEGIN_LP_RING(6);
404 if (ret)
405 return ret;
406
407 OUT_RING(GFX_OP_DRAWRECT_INFO);
408 OUT_RING(DR1);
409 OUT_RING((box->x1 & 0xffff) | (box->y1 << 16));
410 OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16));
411 OUT_RING(DR4);
412 OUT_RING(0);
413 }
414 ADVANCE_LP_RING();
415
416 return 0;
417 }
418
419 /* XXX: Emitting the counter should really be moved to part of the IRQ
420 * emit. For now, do it in both places:
421 */
422
i915_emit_breadcrumb(struct drm_device * dev)423 static void i915_emit_breadcrumb(struct drm_device *dev)
424 {
425 drm_i915_private_t *dev_priv = dev->dev_private;
426 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
427
428 dev_priv->dri1.counter++;
429 if (dev_priv->dri1.counter > 0x7FFFFFFFUL)
430 dev_priv->dri1.counter = 0;
431 if (master_priv->sarea_priv)
432 master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter;
433
434 if (BEGIN_LP_RING(4) == 0) {
435 OUT_RING(MI_STORE_DWORD_INDEX);
436 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
437 OUT_RING(dev_priv->dri1.counter);
438 OUT_RING(0);
439 ADVANCE_LP_RING();
440 }
441 }
442
i915_dispatch_cmdbuffer(struct drm_device * dev,drm_i915_cmdbuffer_t * cmd,struct drm_clip_rect * cliprects,void * cmdbuf)443 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
444 drm_i915_cmdbuffer_t *cmd,
445 struct drm_clip_rect *cliprects,
446 void *cmdbuf)
447 {
448 int nbox = cmd->num_cliprects;
449 int i = 0, count, ret;
450
451 if (cmd->sz & 0x3) {
452 DRM_ERROR("alignment");
453 return -EINVAL;
454 }
455
456 i915_kernel_lost_context(dev);
457
458 count = nbox ? nbox : 1;
459
460 for (i = 0; i < count; i++) {
461 if (i < nbox) {
462 ret = i915_emit_box(dev, &cliprects[i],
463 cmd->DR1, cmd->DR4);
464 if (ret)
465 return ret;
466 }
467
468 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
469 if (ret)
470 return ret;
471 }
472
473 i915_emit_breadcrumb(dev);
474 return 0;
475 }
476
i915_dispatch_batchbuffer(struct drm_device * dev,drm_i915_batchbuffer_t * batch,struct drm_clip_rect * cliprects)477 static int i915_dispatch_batchbuffer(struct drm_device * dev,
478 drm_i915_batchbuffer_t * batch,
479 struct drm_clip_rect *cliprects)
480 {
481 struct drm_i915_private *dev_priv = dev->dev_private;
482 int nbox = batch->num_cliprects;
483 int i, count, ret;
484
485 if ((batch->start | batch->used) & 0x7) {
486 DRM_ERROR("alignment");
487 return -EINVAL;
488 }
489
490 i915_kernel_lost_context(dev);
491
492 count = nbox ? nbox : 1;
493 for (i = 0; i < count; i++) {
494 if (i < nbox) {
495 ret = i915_emit_box(dev, &cliprects[i],
496 batch->DR1, batch->DR4);
497 if (ret)
498 return ret;
499 }
500
501 if (!IS_I830(dev) && !IS_845G(dev)) {
502 ret = BEGIN_LP_RING(2);
503 if (ret)
504 return ret;
505
506 if (INTEL_INFO(dev)->gen >= 4) {
507 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
508 OUT_RING(batch->start);
509 } else {
510 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
511 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
512 }
513 } else {
514 ret = BEGIN_LP_RING(4);
515 if (ret)
516 return ret;
517
518 OUT_RING(MI_BATCH_BUFFER);
519 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
520 OUT_RING(batch->start + batch->used - 4);
521 OUT_RING(0);
522 }
523 ADVANCE_LP_RING();
524 }
525
526
527 if (IS_G4X(dev) || IS_GEN5(dev)) {
528 if (BEGIN_LP_RING(2) == 0) {
529 OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP);
530 OUT_RING(MI_NOOP);
531 ADVANCE_LP_RING();
532 }
533 }
534
535 i915_emit_breadcrumb(dev);
536 return 0;
537 }
538
i915_dispatch_flip(struct drm_device * dev)539 static int i915_dispatch_flip(struct drm_device * dev)
540 {
541 drm_i915_private_t *dev_priv = dev->dev_private;
542 struct drm_i915_master_private *master_priv =
543 dev->primary->master->driver_priv;
544 int ret;
545
546 if (!master_priv->sarea_priv)
547 return -EINVAL;
548
549 DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
550 __func__,
551 dev_priv->dri1.current_page,
552 master_priv->sarea_priv->pf_current_page);
553
554 i915_kernel_lost_context(dev);
555
556 ret = BEGIN_LP_RING(10);
557 if (ret)
558 return ret;
559
560 OUT_RING(MI_FLUSH | MI_READ_FLUSH);
561 OUT_RING(0);
562
563 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
564 OUT_RING(0);
565 if (dev_priv->dri1.current_page == 0) {
566 OUT_RING(dev_priv->dri1.back_offset);
567 dev_priv->dri1.current_page = 1;
568 } else {
569 OUT_RING(dev_priv->dri1.front_offset);
570 dev_priv->dri1.current_page = 0;
571 }
572 OUT_RING(0);
573
574 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
575 OUT_RING(0);
576
577 ADVANCE_LP_RING();
578
579 master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter++;
580
581 if (BEGIN_LP_RING(4) == 0) {
582 OUT_RING(MI_STORE_DWORD_INDEX);
583 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
584 OUT_RING(dev_priv->dri1.counter);
585 OUT_RING(0);
586 ADVANCE_LP_RING();
587 }
588
589 master_priv->sarea_priv->pf_current_page = dev_priv->dri1.current_page;
590 return 0;
591 }
592
i915_quiescent(struct drm_device * dev)593 static int i915_quiescent(struct drm_device *dev)
594 {
595 i915_kernel_lost_context(dev);
596 return intel_ring_idle(LP_RING(dev->dev_private));
597 }
598
i915_flush_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)599 static int i915_flush_ioctl(struct drm_device *dev, void *data,
600 struct drm_file *file_priv)
601 {
602 int ret;
603
604 if (drm_core_check_feature(dev, DRIVER_MODESET))
605 return -ENODEV;
606
607 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
608
609 mutex_lock(&dev->struct_mutex);
610 ret = i915_quiescent(dev);
611 mutex_unlock(&dev->struct_mutex);
612
613 return ret;
614 }
615
i915_batchbuffer(struct drm_device * dev,void * data,struct drm_file * file_priv)616 static int i915_batchbuffer(struct drm_device *dev, void *data,
617 struct drm_file *file_priv)
618 {
619 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
620 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
621 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
622 master_priv->sarea_priv;
623 drm_i915_batchbuffer_t *batch = data;
624 int ret;
625 struct drm_clip_rect *cliprects = NULL;
626
627 if (drm_core_check_feature(dev, DRIVER_MODESET))
628 return -ENODEV;
629
630 if (!dev_priv->dri1.allow_batchbuffer) {
631 DRM_ERROR("Batchbuffer ioctl disabled\n");
632 return -EINVAL;
633 }
634
635 DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
636 batch->start, batch->used, batch->num_cliprects);
637
638 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
639
640 if (batch->num_cliprects < 0)
641 return -EINVAL;
642
643 if (batch->num_cliprects) {
644 cliprects = kcalloc(batch->num_cliprects,
645 sizeof(struct drm_clip_rect),
646 GFP_KERNEL);
647 if (cliprects == NULL)
648 return -ENOMEM;
649
650 ret = copy_from_user(cliprects, batch->cliprects,
651 batch->num_cliprects *
652 sizeof(struct drm_clip_rect));
653 if (ret != 0) {
654 ret = -EFAULT;
655 goto fail_free;
656 }
657 }
658
659 mutex_lock(&dev->struct_mutex);
660 ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
661 mutex_unlock(&dev->struct_mutex);
662
663 if (sarea_priv)
664 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
665
666 fail_free:
667 kfree(cliprects);
668
669 return ret;
670 }
671
i915_cmdbuffer(struct drm_device * dev,void * data,struct drm_file * file_priv)672 static int i915_cmdbuffer(struct drm_device *dev, void *data,
673 struct drm_file *file_priv)
674 {
675 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
676 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
677 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
678 master_priv->sarea_priv;
679 drm_i915_cmdbuffer_t *cmdbuf = data;
680 struct drm_clip_rect *cliprects = NULL;
681 void *batch_data;
682 int ret;
683
684 DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
685 cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
686
687 if (drm_core_check_feature(dev, DRIVER_MODESET))
688 return -ENODEV;
689
690 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
691
692 if (cmdbuf->num_cliprects < 0)
693 return -EINVAL;
694
695 batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
696 if (batch_data == NULL)
697 return -ENOMEM;
698
699 ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
700 if (ret != 0) {
701 ret = -EFAULT;
702 goto fail_batch_free;
703 }
704
705 if (cmdbuf->num_cliprects) {
706 cliprects = kcalloc(cmdbuf->num_cliprects,
707 sizeof(struct drm_clip_rect), GFP_KERNEL);
708 if (cliprects == NULL) {
709 ret = -ENOMEM;
710 goto fail_batch_free;
711 }
712
713 ret = copy_from_user(cliprects, cmdbuf->cliprects,
714 cmdbuf->num_cliprects *
715 sizeof(struct drm_clip_rect));
716 if (ret != 0) {
717 ret = -EFAULT;
718 goto fail_clip_free;
719 }
720 }
721
722 mutex_lock(&dev->struct_mutex);
723 ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
724 mutex_unlock(&dev->struct_mutex);
725 if (ret) {
726 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
727 goto fail_clip_free;
728 }
729
730 if (sarea_priv)
731 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
732
733 fail_clip_free:
734 kfree(cliprects);
735 fail_batch_free:
736 kfree(batch_data);
737
738 return ret;
739 }
740
i915_emit_irq(struct drm_device * dev)741 static int i915_emit_irq(struct drm_device * dev)
742 {
743 drm_i915_private_t *dev_priv = dev->dev_private;
744 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
745
746 i915_kernel_lost_context(dev);
747
748 DRM_DEBUG_DRIVER("\n");
749
750 dev_priv->dri1.counter++;
751 if (dev_priv->dri1.counter > 0x7FFFFFFFUL)
752 dev_priv->dri1.counter = 1;
753 if (master_priv->sarea_priv)
754 master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter;
755
756 if (BEGIN_LP_RING(4) == 0) {
757 OUT_RING(MI_STORE_DWORD_INDEX);
758 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
759 OUT_RING(dev_priv->dri1.counter);
760 OUT_RING(MI_USER_INTERRUPT);
761 ADVANCE_LP_RING();
762 }
763
764 return dev_priv->dri1.counter;
765 }
766
i915_wait_irq(struct drm_device * dev,int irq_nr)767 static int i915_wait_irq(struct drm_device * dev, int irq_nr)
768 {
769 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
770 struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
771 int ret = 0;
772 struct intel_ring_buffer *ring = LP_RING(dev_priv);
773
774 DRM_DEBUG_DRIVER("irq_nr=%d breadcrumb=%d\n", irq_nr,
775 READ_BREADCRUMB(dev_priv));
776
777 if (READ_BREADCRUMB(dev_priv) >= irq_nr) {
778 if (master_priv->sarea_priv)
779 master_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
780 return 0;
781 }
782
783 if (master_priv->sarea_priv)
784 master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
785
786 if (ring->irq_get(ring)) {
787 DRM_WAIT_ON(ret, ring->irq_queue, 3 * DRM_HZ,
788 READ_BREADCRUMB(dev_priv) >= irq_nr);
789 ring->irq_put(ring);
790 } else if (wait_for(READ_BREADCRUMB(dev_priv) >= irq_nr, 3000))
791 ret = -EBUSY;
792
793 if (ret == -EBUSY) {
794 DRM_ERROR("EBUSY -- rec: %d emitted: %d\n",
795 READ_BREADCRUMB(dev_priv), (int)dev_priv->dri1.counter);
796 }
797
798 return ret;
799 }
800
801 /* Needs the lock as it touches the ring.
802 */
i915_irq_emit(struct drm_device * dev,void * data,struct drm_file * file_priv)803 static int i915_irq_emit(struct drm_device *dev, void *data,
804 struct drm_file *file_priv)
805 {
806 drm_i915_private_t *dev_priv = dev->dev_private;
807 drm_i915_irq_emit_t *emit = data;
808 int result;
809
810 if (drm_core_check_feature(dev, DRIVER_MODESET))
811 return -ENODEV;
812
813 if (!dev_priv || !LP_RING(dev_priv)->virtual_start) {
814 DRM_ERROR("called with no initialization\n");
815 return -EINVAL;
816 }
817
818 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
819
820 mutex_lock(&dev->struct_mutex);
821 result = i915_emit_irq(dev);
822 mutex_unlock(&dev->struct_mutex);
823
824 if (DRM_COPY_TO_USER(emit->irq_seq, &result, sizeof(int))) {
825 DRM_ERROR("copy_to_user\n");
826 return -EFAULT;
827 }
828
829 return 0;
830 }
831
832 /* Doesn't need the hardware lock.
833 */
i915_irq_wait(struct drm_device * dev,void * data,struct drm_file * file_priv)834 static int i915_irq_wait(struct drm_device *dev, void *data,
835 struct drm_file *file_priv)
836 {
837 drm_i915_private_t *dev_priv = dev->dev_private;
838 drm_i915_irq_wait_t *irqwait = data;
839
840 if (drm_core_check_feature(dev, DRIVER_MODESET))
841 return -ENODEV;
842
843 if (!dev_priv) {
844 DRM_ERROR("called with no initialization\n");
845 return -EINVAL;
846 }
847
848 return i915_wait_irq(dev, irqwait->irq_seq);
849 }
850
i915_vblank_pipe_get(struct drm_device * dev,void * data,struct drm_file * file_priv)851 static int i915_vblank_pipe_get(struct drm_device *dev, void *data,
852 struct drm_file *file_priv)
853 {
854 drm_i915_private_t *dev_priv = dev->dev_private;
855 drm_i915_vblank_pipe_t *pipe = data;
856
857 if (drm_core_check_feature(dev, DRIVER_MODESET))
858 return -ENODEV;
859
860 if (!dev_priv) {
861 DRM_ERROR("called with no initialization\n");
862 return -EINVAL;
863 }
864
865 pipe->pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B;
866
867 return 0;
868 }
869
870 /**
871 * Schedule buffer swap at given vertical blank.
872 */
i915_vblank_swap(struct drm_device * dev,void * data,struct drm_file * file_priv)873 static int i915_vblank_swap(struct drm_device *dev, void *data,
874 struct drm_file *file_priv)
875 {
876 /* The delayed swap mechanism was fundamentally racy, and has been
877 * removed. The model was that the client requested a delayed flip/swap
878 * from the kernel, then waited for vblank before continuing to perform
879 * rendering. The problem was that the kernel might wake the client
880 * up before it dispatched the vblank swap (since the lock has to be
881 * held while touching the ringbuffer), in which case the client would
882 * clear and start the next frame before the swap occurred, and
883 * flicker would occur in addition to likely missing the vblank.
884 *
885 * In the absence of this ioctl, userland falls back to a correct path
886 * of waiting for a vblank, then dispatching the swap on its own.
887 * Context switching to userland and back is plenty fast enough for
888 * meeting the requirements of vblank swapping.
889 */
890 return -EINVAL;
891 }
892
i915_flip_bufs(struct drm_device * dev,void * data,struct drm_file * file_priv)893 static int i915_flip_bufs(struct drm_device *dev, void *data,
894 struct drm_file *file_priv)
895 {
896 int ret;
897
898 if (drm_core_check_feature(dev, DRIVER_MODESET))
899 return -ENODEV;
900
901 DRM_DEBUG_DRIVER("%s\n", __func__);
902
903 RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
904
905 mutex_lock(&dev->struct_mutex);
906 ret = i915_dispatch_flip(dev);
907 mutex_unlock(&dev->struct_mutex);
908
909 return ret;
910 }
911
i915_getparam(struct drm_device * dev,void * data,struct drm_file * file_priv)912 static int i915_getparam(struct drm_device *dev, void *data,
913 struct drm_file *file_priv)
914 {
915 drm_i915_private_t *dev_priv = dev->dev_private;
916 drm_i915_getparam_t *param = data;
917 int value;
918
919 if (!dev_priv) {
920 DRM_ERROR("called with no initialization\n");
921 return -EINVAL;
922 }
923
924 switch (param->param) {
925 case I915_PARAM_IRQ_ACTIVE:
926 value = dev->pdev->irq ? 1 : 0;
927 break;
928 case I915_PARAM_ALLOW_BATCHBUFFER:
929 value = dev_priv->dri1.allow_batchbuffer ? 1 : 0;
930 break;
931 case I915_PARAM_LAST_DISPATCH:
932 value = READ_BREADCRUMB(dev_priv);
933 break;
934 case I915_PARAM_CHIPSET_ID:
935 value = dev->pci_device;
936 break;
937 case I915_PARAM_HAS_GEM:
938 value = 1;
939 break;
940 case I915_PARAM_NUM_FENCES_AVAIL:
941 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
942 break;
943 case I915_PARAM_HAS_OVERLAY:
944 value = dev_priv->overlay ? 1 : 0;
945 break;
946 case I915_PARAM_HAS_PAGEFLIPPING:
947 value = 1;
948 break;
949 case I915_PARAM_HAS_EXECBUF2:
950 /* depends on GEM */
951 value = 1;
952 break;
953 case I915_PARAM_HAS_BSD:
954 value = intel_ring_initialized(&dev_priv->ring[VCS]);
955 break;
956 case I915_PARAM_HAS_BLT:
957 value = intel_ring_initialized(&dev_priv->ring[BCS]);
958 break;
959 case I915_PARAM_HAS_RELAXED_FENCING:
960 value = 1;
961 break;
962 case I915_PARAM_HAS_COHERENT_RINGS:
963 value = 1;
964 break;
965 case I915_PARAM_HAS_EXEC_CONSTANTS:
966 value = INTEL_INFO(dev)->gen >= 4;
967 break;
968 case I915_PARAM_HAS_RELAXED_DELTA:
969 value = 1;
970 break;
971 case I915_PARAM_HAS_GEN7_SOL_RESET:
972 value = 1;
973 break;
974 case I915_PARAM_HAS_LLC:
975 value = HAS_LLC(dev);
976 break;
977 case I915_PARAM_HAS_ALIASING_PPGTT:
978 value = dev_priv->mm.aliasing_ppgtt ? 1 : 0;
979 break;
980 case I915_PARAM_HAS_WAIT_TIMEOUT:
981 value = 1;
982 break;
983 case I915_PARAM_HAS_SEMAPHORES:
984 value = i915_semaphore_is_enabled(dev);
985 break;
986 case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
987 value = 1;
988 break;
989 case I915_PARAM_HAS_SECURE_BATCHES:
990 value = capable(CAP_SYS_ADMIN);
991 break;
992 case I915_PARAM_HAS_PINNED_BATCHES:
993 value = 1;
994 break;
995 case I915_PARAM_HAS_EXEC_NO_RELOC:
996 value = 1;
997 break;
998 case I915_PARAM_HAS_EXEC_HANDLE_LUT:
999 value = 1;
1000 break;
1001 default:
1002 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
1003 param->param);
1004 return -EINVAL;
1005 }
1006
1007 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
1008 DRM_ERROR("DRM_COPY_TO_USER failed\n");
1009 return -EFAULT;
1010 }
1011
1012 return 0;
1013 }
1014
i915_setparam(struct drm_device * dev,void * data,struct drm_file * file_priv)1015 static int i915_setparam(struct drm_device *dev, void *data,
1016 struct drm_file *file_priv)
1017 {
1018 drm_i915_private_t *dev_priv = dev->dev_private;
1019 drm_i915_setparam_t *param = data;
1020
1021 if (!dev_priv) {
1022 DRM_ERROR("called with no initialization\n");
1023 return -EINVAL;
1024 }
1025
1026 switch (param->param) {
1027 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
1028 break;
1029 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
1030 break;
1031 case I915_SETPARAM_ALLOW_BATCHBUFFER:
1032 dev_priv->dri1.allow_batchbuffer = param->value ? 1 : 0;
1033 break;
1034 case I915_SETPARAM_NUM_USED_FENCES:
1035 if (param->value > dev_priv->num_fence_regs ||
1036 param->value < 0)
1037 return -EINVAL;
1038 /* Userspace can use first N regs */
1039 dev_priv->fence_reg_start = param->value;
1040 break;
1041 default:
1042 DRM_DEBUG_DRIVER("unknown parameter %d\n",
1043 param->param);
1044 return -EINVAL;
1045 }
1046
1047 return 0;
1048 }
1049
i915_set_status_page(struct drm_device * dev,void * data,struct drm_file * file_priv)1050 static int i915_set_status_page(struct drm_device *dev, void *data,
1051 struct drm_file *file_priv)
1052 {
1053 drm_i915_private_t *dev_priv = dev->dev_private;
1054 drm_i915_hws_addr_t *hws = data;
1055 struct intel_ring_buffer *ring;
1056
1057 if (drm_core_check_feature(dev, DRIVER_MODESET))
1058 return -ENODEV;
1059
1060 if (!I915_NEED_GFX_HWS(dev))
1061 return -EINVAL;
1062
1063 if (!dev_priv) {
1064 DRM_ERROR("called with no initialization\n");
1065 return -EINVAL;
1066 }
1067
1068 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1069 WARN(1, "tried to set status page when mode setting active\n");
1070 return 0;
1071 }
1072
1073 DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
1074
1075 ring = LP_RING(dev_priv);
1076 ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
1077
1078 dev_priv->dri1.gfx_hws_cpu_addr =
1079 ioremap_wc(dev_priv->gtt.mappable_base + hws->addr, 4096);
1080 if (dev_priv->dri1.gfx_hws_cpu_addr == NULL) {
1081 i915_dma_cleanup(dev);
1082 ring->status_page.gfx_addr = 0;
1083 DRM_ERROR("can not ioremap virtual address for"
1084 " G33 hw status page\n");
1085 return -ENOMEM;
1086 }
1087
1088 memset_io(dev_priv->dri1.gfx_hws_cpu_addr, 0, PAGE_SIZE);
1089 I915_WRITE(HWS_PGA, ring->status_page.gfx_addr);
1090
1091 DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
1092 ring->status_page.gfx_addr);
1093 DRM_DEBUG_DRIVER("load hws at %p\n",
1094 ring->status_page.page_addr);
1095 return 0;
1096 }
1097
i915_get_bridge_dev(struct drm_device * dev)1098 static int i915_get_bridge_dev(struct drm_device *dev)
1099 {
1100 struct drm_i915_private *dev_priv = dev->dev_private;
1101
1102 dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
1103 if (!dev_priv->bridge_dev) {
1104 DRM_ERROR("bridge device not found\n");
1105 return -1;
1106 }
1107 return 0;
1108 }
1109
1110 #define MCHBAR_I915 0x44
1111 #define MCHBAR_I965 0x48
1112 #define MCHBAR_SIZE (4*4096)
1113
1114 #define DEVEN_REG 0x54
1115 #define DEVEN_MCHBAR_EN (1 << 28)
1116
1117 /* Allocate space for the MCH regs if needed, return nonzero on error */
1118 static int
intel_alloc_mchbar_resource(struct drm_device * dev)1119 intel_alloc_mchbar_resource(struct drm_device *dev)
1120 {
1121 drm_i915_private_t *dev_priv = dev->dev_private;
1122 int reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1123 u32 temp_lo, temp_hi = 0;
1124 u64 mchbar_addr;
1125 int ret;
1126
1127 if (INTEL_INFO(dev)->gen >= 4)
1128 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
1129 pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
1130 mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
1131
1132 /* If ACPI doesn't have it, assume we need to allocate it ourselves */
1133 #ifdef CONFIG_PNP
1134 if (mchbar_addr &&
1135 pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
1136 return 0;
1137 #endif
1138
1139 /* Get some space for it */
1140 dev_priv->mch_res.name = "i915 MCHBAR";
1141 dev_priv->mch_res.flags = IORESOURCE_MEM;
1142 ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
1143 &dev_priv->mch_res,
1144 MCHBAR_SIZE, MCHBAR_SIZE,
1145 PCIBIOS_MIN_MEM,
1146 0, pcibios_align_resource,
1147 dev_priv->bridge_dev);
1148 if (ret) {
1149 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
1150 dev_priv->mch_res.start = 0;
1151 return ret;
1152 }
1153
1154 if (INTEL_INFO(dev)->gen >= 4)
1155 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
1156 upper_32_bits(dev_priv->mch_res.start));
1157
1158 pci_write_config_dword(dev_priv->bridge_dev, reg,
1159 lower_32_bits(dev_priv->mch_res.start));
1160 return 0;
1161 }
1162
1163 /* Setup MCHBAR if possible, return true if we should disable it again */
1164 static void
intel_setup_mchbar(struct drm_device * dev)1165 intel_setup_mchbar(struct drm_device *dev)
1166 {
1167 drm_i915_private_t *dev_priv = dev->dev_private;
1168 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1169 u32 temp;
1170 bool enabled;
1171
1172 dev_priv->mchbar_need_disable = false;
1173
1174 if (IS_I915G(dev) || IS_I915GM(dev)) {
1175 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1176 enabled = !!(temp & DEVEN_MCHBAR_EN);
1177 } else {
1178 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1179 enabled = temp & 1;
1180 }
1181
1182 /* If it's already enabled, don't have to do anything */
1183 if (enabled)
1184 return;
1185
1186 if (intel_alloc_mchbar_resource(dev))
1187 return;
1188
1189 dev_priv->mchbar_need_disable = true;
1190
1191 /* Space is allocated or reserved, so enable it. */
1192 if (IS_I915G(dev) || IS_I915GM(dev)) {
1193 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
1194 temp | DEVEN_MCHBAR_EN);
1195 } else {
1196 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1197 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
1198 }
1199 }
1200
1201 static void
intel_teardown_mchbar(struct drm_device * dev)1202 intel_teardown_mchbar(struct drm_device *dev)
1203 {
1204 drm_i915_private_t *dev_priv = dev->dev_private;
1205 int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
1206 u32 temp;
1207
1208 if (dev_priv->mchbar_need_disable) {
1209 if (IS_I915G(dev) || IS_I915GM(dev)) {
1210 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
1211 temp &= ~DEVEN_MCHBAR_EN;
1212 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
1213 } else {
1214 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
1215 temp &= ~1;
1216 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
1217 }
1218 }
1219
1220 if (dev_priv->mch_res.start)
1221 release_resource(&dev_priv->mch_res);
1222 }
1223
1224 /* true = enable decode, false = disable decoder */
i915_vga_set_decode(void * cookie,bool state)1225 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1226 {
1227 struct drm_device *dev = cookie;
1228
1229 intel_modeset_vga_set_state(dev, state);
1230 if (state)
1231 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1232 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1233 else
1234 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1235 }
1236
i915_switcheroo_set_state(struct pci_dev * pdev,enum vga_switcheroo_state state)1237 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1238 {
1239 struct drm_device *dev = pci_get_drvdata(pdev);
1240 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1241 if (state == VGA_SWITCHEROO_ON) {
1242 pr_info("switched on\n");
1243 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1244 /* i915 resume handler doesn't set to D0 */
1245 pci_set_power_state(dev->pdev, PCI_D0);
1246 i915_resume(dev);
1247 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1248 } else {
1249 pr_err("switched off\n");
1250 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1251 i915_suspend(dev, pmm);
1252 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1253 }
1254 }
1255
i915_switcheroo_can_switch(struct pci_dev * pdev)1256 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1257 {
1258 struct drm_device *dev = pci_get_drvdata(pdev);
1259 bool can_switch;
1260
1261 spin_lock(&dev->count_lock);
1262 can_switch = (dev->open_count == 0);
1263 spin_unlock(&dev->count_lock);
1264 return can_switch;
1265 }
1266
1267 static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
1268 .set_gpu_state = i915_switcheroo_set_state,
1269 .reprobe = NULL,
1270 .can_switch = i915_switcheroo_can_switch,
1271 };
1272
i915_load_modeset_init(struct drm_device * dev)1273 static int i915_load_modeset_init(struct drm_device *dev)
1274 {
1275 struct drm_i915_private *dev_priv = dev->dev_private;
1276 int ret;
1277
1278 ret = intel_parse_bios(dev);
1279 if (ret)
1280 DRM_INFO("failed to find VBIOS tables\n");
1281
1282 /* If we have > 1 VGA cards, then we need to arbitrate access
1283 * to the common VGA resources.
1284 *
1285 * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
1286 * then we do not take part in VGA arbitration and the
1287 * vga_client_register() fails with -ENODEV.
1288 */
1289 ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1290 if (ret && ret != -ENODEV)
1291 goto out;
1292
1293 intel_register_dsm_handler();
1294
1295 ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops);
1296 if (ret)
1297 goto cleanup_vga_client;
1298
1299 /* Initialise stolen first so that we may reserve preallocated
1300 * objects for the BIOS to KMS transition.
1301 */
1302 ret = i915_gem_init_stolen(dev);
1303 if (ret)
1304 goto cleanup_vga_switcheroo;
1305
1306 ret = drm_irq_install(dev);
1307 if (ret)
1308 goto cleanup_gem_stolen;
1309
1310 /* Important: The output setup functions called by modeset_init need
1311 * working irqs for e.g. gmbus and dp aux transfers. */
1312 intel_modeset_init(dev);
1313
1314 ret = i915_gem_init(dev);
1315 if (ret)
1316 goto cleanup_irq;
1317
1318 INIT_WORK(&dev_priv->console_resume_work, intel_console_resume);
1319
1320 intel_modeset_gem_init(dev);
1321
1322 /* Always safe in the mode setting case. */
1323 /* FIXME: do pre/post-mode set stuff in core KMS code */
1324 dev->vblank_disable_allowed = 1;
1325 if (INTEL_INFO(dev)->num_pipes == 0) {
1326 dev_priv->mm.suspended = 0;
1327 return 0;
1328 }
1329
1330 ret = intel_fbdev_init(dev);
1331 if (ret)
1332 goto cleanup_gem;
1333
1334 /* Only enable hotplug handling once the fbdev is fully set up. */
1335 intel_hpd_init(dev);
1336
1337 /*
1338 * Some ports require correctly set-up hpd registers for detection to
1339 * work properly (leading to ghost connected connector status), e.g. VGA
1340 * on gm45. Hence we can only set up the initial fbdev config after hpd
1341 * irqs are fully enabled. Now we should scan for the initial config
1342 * only once hotplug handling is enabled, but due to screwed-up locking
1343 * around kms/fbdev init we can't protect the fdbev initial config
1344 * scanning against hotplug events. Hence do this first and ignore the
1345 * tiny window where we will loose hotplug notifactions.
1346 */
1347 intel_fbdev_initial_config(dev);
1348
1349 /* Only enable hotplug handling once the fbdev is fully set up. */
1350 dev_priv->enable_hotplug_processing = true;
1351
1352 drm_kms_helper_poll_init(dev);
1353
1354 /* We're off and running w/KMS */
1355 dev_priv->mm.suspended = 0;
1356
1357 return 0;
1358
1359 cleanup_gem:
1360 mutex_lock(&dev->struct_mutex);
1361 i915_gem_cleanup_ringbuffer(dev);
1362 mutex_unlock(&dev->struct_mutex);
1363 i915_gem_cleanup_aliasing_ppgtt(dev);
1364 cleanup_irq:
1365 drm_irq_uninstall(dev);
1366 cleanup_gem_stolen:
1367 i915_gem_cleanup_stolen(dev);
1368 cleanup_vga_switcheroo:
1369 vga_switcheroo_unregister_client(dev->pdev);
1370 cleanup_vga_client:
1371 vga_client_register(dev->pdev, NULL, NULL, NULL);
1372 out:
1373 return ret;
1374 }
1375
i915_master_create(struct drm_device * dev,struct drm_master * master)1376 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1377 {
1378 struct drm_i915_master_private *master_priv;
1379
1380 master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1381 if (!master_priv)
1382 return -ENOMEM;
1383
1384 master->driver_priv = master_priv;
1385 return 0;
1386 }
1387
i915_master_destroy(struct drm_device * dev,struct drm_master * master)1388 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1389 {
1390 struct drm_i915_master_private *master_priv = master->driver_priv;
1391
1392 if (!master_priv)
1393 return;
1394
1395 kfree(master_priv);
1396
1397 master->driver_priv = NULL;
1398 }
1399
1400 static void
i915_mtrr_setup(struct drm_i915_private * dev_priv,unsigned long base,unsigned long size)1401 i915_mtrr_setup(struct drm_i915_private *dev_priv, unsigned long base,
1402 unsigned long size)
1403 {
1404 dev_priv->mm.gtt_mtrr = -1;
1405
1406 #if defined(CONFIG_X86_PAT)
1407 if (cpu_has_pat)
1408 return;
1409 #endif
1410
1411 /* Set up a WC MTRR for non-PAT systems. This is more common than
1412 * one would think, because the kernel disables PAT on first
1413 * generation Core chips because WC PAT gets overridden by a UC
1414 * MTRR if present. Even if a UC MTRR isn't present.
1415 */
1416 dev_priv->mm.gtt_mtrr = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1);
1417 if (dev_priv->mm.gtt_mtrr < 0) {
1418 DRM_INFO("MTRR allocation failed. Graphics "
1419 "performance may suffer.\n");
1420 }
1421 }
1422
i915_kick_out_firmware_fb(struct drm_i915_private * dev_priv)1423 static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
1424 {
1425 struct apertures_struct *ap;
1426 struct pci_dev *pdev = dev_priv->dev->pdev;
1427 bool primary;
1428
1429 ap = alloc_apertures(1);
1430 if (!ap)
1431 return;
1432
1433 ap->ranges[0].base = dev_priv->gtt.mappable_base;
1434 ap->ranges[0].size = dev_priv->gtt.mappable_end - dev_priv->gtt.start;
1435
1436 primary =
1437 pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
1438
1439 remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
1440
1441 kfree(ap);
1442 }
1443
i915_dump_device_info(struct drm_i915_private * dev_priv)1444 static void i915_dump_device_info(struct drm_i915_private *dev_priv)
1445 {
1446 const struct intel_device_info *info = dev_priv->info;
1447
1448 #define DEV_INFO_FLAG(name) info->name ? #name "," : ""
1449 #define DEV_INFO_SEP ,
1450 DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x flags="
1451 "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
1452 info->gen,
1453 dev_priv->dev->pdev->device,
1454 DEV_INFO_FLAGS);
1455 #undef DEV_INFO_FLAG
1456 #undef DEV_INFO_SEP
1457 }
1458
1459 /**
1460 * intel_early_sanitize_regs - clean up BIOS state
1461 * @dev: DRM device
1462 *
1463 * This function must be called before we do any I915_READ or I915_WRITE. Its
1464 * purpose is to clean up any state left by the BIOS that may affect us when
1465 * reading and/or writing registers.
1466 */
intel_early_sanitize_regs(struct drm_device * dev)1467 static void intel_early_sanitize_regs(struct drm_device *dev)
1468 {
1469 struct drm_i915_private *dev_priv = dev->dev_private;
1470
1471 if (IS_HASWELL(dev))
1472 I915_WRITE_NOTRACE(FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
1473 }
1474
1475 /**
1476 * i915_driver_load - setup chip and create an initial config
1477 * @dev: DRM device
1478 * @flags: startup flags
1479 *
1480 * The driver load routine has to do several things:
1481 * - drive output discovery via intel_modeset_init()
1482 * - initialize the memory manager
1483 * - allocate initial config memory
1484 * - setup the DRM framebuffer with the allocated memory
1485 */
i915_driver_load(struct drm_device * dev,unsigned long flags)1486 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1487 {
1488 struct drm_i915_private *dev_priv;
1489 struct intel_device_info *info;
1490 int ret = 0, mmio_bar, mmio_size;
1491 uint32_t aperture_size;
1492
1493 info = (struct intel_device_info *) flags;
1494
1495 /* Refuse to load on gen6+ without kms enabled. */
1496 if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
1497 return -ENODEV;
1498
1499 /* i915 has 4 more counters */
1500 dev->counters += 4;
1501 dev->types[6] = _DRM_STAT_IRQ;
1502 dev->types[7] = _DRM_STAT_PRIMARY;
1503 dev->types[8] = _DRM_STAT_SECONDARY;
1504 dev->types[9] = _DRM_STAT_DMA;
1505
1506 dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
1507 if (dev_priv == NULL)
1508 return -ENOMEM;
1509
1510 dev->dev_private = (void *)dev_priv;
1511 dev_priv->dev = dev;
1512 dev_priv->info = info;
1513
1514 i915_dump_device_info(dev_priv);
1515
1516 if (i915_get_bridge_dev(dev)) {
1517 ret = -EIO;
1518 goto free_priv;
1519 }
1520
1521 mmio_bar = IS_GEN2(dev) ? 1 : 0;
1522 /* Before gen4, the registers and the GTT are behind different BARs.
1523 * However, from gen4 onwards, the registers and the GTT are shared
1524 * in the same BAR, so we want to restrict this ioremap from
1525 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
1526 * the register BAR remains the same size for all the earlier
1527 * generations up to Ironlake.
1528 */
1529 if (info->gen < 5)
1530 mmio_size = 512*1024;
1531 else
1532 mmio_size = 2*1024*1024;
1533
1534 dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size);
1535 if (!dev_priv->regs) {
1536 DRM_ERROR("failed to map registers\n");
1537 ret = -EIO;
1538 goto put_bridge;
1539 }
1540
1541 intel_early_sanitize_regs(dev);
1542
1543 ret = i915_gem_gtt_init(dev);
1544 if (ret)
1545 goto put_bridge;
1546
1547 if (drm_core_check_feature(dev, DRIVER_MODESET))
1548 i915_kick_out_firmware_fb(dev_priv);
1549
1550 pci_set_master(dev->pdev);
1551
1552 /* overlay on gen2 is broken and can't address above 1G */
1553 if (IS_GEN2(dev))
1554 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
1555
1556 /* 965GM sometimes incorrectly writes to hardware status page (HWS)
1557 * using 32bit addressing, overwriting memory if HWS is located
1558 * above 4GB.
1559 *
1560 * The documentation also mentions an issue with undefined
1561 * behaviour if any general state is accessed within a page above 4GB,
1562 * which also needs to be handled carefully.
1563 */
1564 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1565 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(32));
1566
1567 aperture_size = dev_priv->gtt.mappable_end;
1568
1569 dev_priv->gtt.mappable =
1570 io_mapping_create_wc(dev_priv->gtt.mappable_base,
1571 aperture_size);
1572 if (dev_priv->gtt.mappable == NULL) {
1573 ret = -EIO;
1574 goto out_rmmap;
1575 }
1576
1577 i915_mtrr_setup(dev_priv, dev_priv->gtt.mappable_base,
1578 aperture_size);
1579
1580 /* The i915 workqueue is primarily used for batched retirement of
1581 * requests (and thus managing bo) once the task has been completed
1582 * by the GPU. i915_gem_retire_requests() is called directly when we
1583 * need high-priority retirement, such as waiting for an explicit
1584 * bo.
1585 *
1586 * It is also used for periodic low-priority events, such as
1587 * idle-timers and recording error state.
1588 *
1589 * All tasks on the workqueue are expected to acquire the dev mutex
1590 * so there is no point in running more than one instance of the
1591 * workqueue at any time. Use an ordered one.
1592 */
1593 dev_priv->wq = alloc_ordered_workqueue("i915", 0);
1594 if (dev_priv->wq == NULL) {
1595 DRM_ERROR("Failed to create our workqueue.\n");
1596 ret = -ENOMEM;
1597 goto out_mtrrfree;
1598 }
1599
1600 /* This must be called before any calls to HAS_PCH_* */
1601 intel_detect_pch(dev);
1602
1603 intel_irq_init(dev);
1604 intel_gt_init(dev);
1605
1606 /* Try to make sure MCHBAR is enabled before poking at it */
1607 intel_setup_mchbar(dev);
1608 intel_setup_gmbus(dev);
1609 intel_opregion_setup(dev);
1610
1611 intel_setup_bios(dev);
1612
1613 i915_gem_load(dev);
1614
1615 /* On the 945G/GM, the chipset reports the MSI capability on the
1616 * integrated graphics even though the support isn't actually there
1617 * according to the published specs. It doesn't appear to function
1618 * correctly in testing on 945G.
1619 * This may be a side effect of MSI having been made available for PEG
1620 * and the registers being closely associated.
1621 *
1622 * According to chipset errata, on the 965GM, MSI interrupts may
1623 * be lost or delayed, but we use them anyways to avoid
1624 * stuck interrupts on some machines.
1625 */
1626 if (!IS_I945G(dev) && !IS_I945GM(dev))
1627 pci_enable_msi(dev->pdev);
1628
1629 spin_lock_init(&dev_priv->irq_lock);
1630 spin_lock_init(&dev_priv->gpu_error.lock);
1631 spin_lock_init(&dev_priv->rps.lock);
1632 mutex_init(&dev_priv->dpio_lock);
1633
1634 mutex_init(&dev_priv->rps.hw_lock);
1635 mutex_init(&dev_priv->modeset_restore_lock);
1636
1637 dev_priv->num_plane = 1;
1638 if (IS_VALLEYVIEW(dev))
1639 dev_priv->num_plane = 2;
1640
1641 if (INTEL_INFO(dev)->num_pipes) {
1642 ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes);
1643 if (ret)
1644 goto out_gem_unload;
1645 }
1646
1647 /* Start out suspended */
1648 dev_priv->mm.suspended = 1;
1649
1650 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1651 ret = i915_load_modeset_init(dev);
1652 if (ret < 0) {
1653 DRM_ERROR("failed to init modeset\n");
1654 goto out_gem_unload;
1655 }
1656 }
1657
1658 i915_setup_sysfs(dev);
1659
1660 if (INTEL_INFO(dev)->num_pipes) {
1661 /* Must be done after probing outputs */
1662 intel_opregion_init(dev);
1663 acpi_video_register();
1664 }
1665
1666 if (IS_GEN5(dev))
1667 intel_gpu_ips_init(dev_priv);
1668
1669 return 0;
1670
1671 out_gem_unload:
1672 if (dev_priv->mm.inactive_shrinker.shrink)
1673 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
1674
1675 if (dev->pdev->msi_enabled)
1676 pci_disable_msi(dev->pdev);
1677
1678 intel_teardown_gmbus(dev);
1679 intel_teardown_mchbar(dev);
1680 destroy_workqueue(dev_priv->wq);
1681 out_mtrrfree:
1682 if (dev_priv->mm.gtt_mtrr >= 0) {
1683 mtrr_del(dev_priv->mm.gtt_mtrr,
1684 dev_priv->gtt.mappable_base,
1685 aperture_size);
1686 dev_priv->mm.gtt_mtrr = -1;
1687 }
1688 io_mapping_free(dev_priv->gtt.mappable);
1689 dev_priv->gtt.gtt_remove(dev);
1690 out_rmmap:
1691 pci_iounmap(dev->pdev, dev_priv->regs);
1692 put_bridge:
1693 pci_dev_put(dev_priv->bridge_dev);
1694 free_priv:
1695 kfree(dev_priv);
1696 return ret;
1697 }
1698
i915_driver_unload(struct drm_device * dev)1699 int i915_driver_unload(struct drm_device *dev)
1700 {
1701 struct drm_i915_private *dev_priv = dev->dev_private;
1702 int ret;
1703
1704 intel_gpu_ips_teardown();
1705
1706 i915_teardown_sysfs(dev);
1707
1708 if (dev_priv->mm.inactive_shrinker.shrink)
1709 unregister_shrinker(&dev_priv->mm.inactive_shrinker);
1710
1711 mutex_lock(&dev->struct_mutex);
1712 ret = i915_gpu_idle(dev);
1713 if (ret)
1714 DRM_ERROR("failed to idle hardware: %d\n", ret);
1715 i915_gem_retire_requests(dev);
1716 mutex_unlock(&dev->struct_mutex);
1717
1718 /* Cancel the retire work handler, which should be idle now. */
1719 cancel_delayed_work_sync(&dev_priv->mm.retire_work);
1720
1721 io_mapping_free(dev_priv->gtt.mappable);
1722 if (dev_priv->mm.gtt_mtrr >= 0) {
1723 mtrr_del(dev_priv->mm.gtt_mtrr,
1724 dev_priv->gtt.mappable_base,
1725 dev_priv->gtt.mappable_end);
1726 dev_priv->mm.gtt_mtrr = -1;
1727 }
1728
1729 acpi_video_unregister();
1730
1731 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1732 intel_fbdev_fini(dev);
1733 intel_modeset_cleanup(dev);
1734 cancel_work_sync(&dev_priv->console_resume_work);
1735
1736 /*
1737 * free the memory space allocated for the child device
1738 * config parsed from VBT
1739 */
1740 if (dev_priv->child_dev && dev_priv->child_dev_num) {
1741 kfree(dev_priv->child_dev);
1742 dev_priv->child_dev = NULL;
1743 dev_priv->child_dev_num = 0;
1744 }
1745
1746 vga_switcheroo_unregister_client(dev->pdev);
1747 vga_client_register(dev->pdev, NULL, NULL, NULL);
1748 }
1749
1750 /* Free error state after interrupts are fully disabled. */
1751 del_timer_sync(&dev_priv->gpu_error.hangcheck_timer);
1752 cancel_work_sync(&dev_priv->gpu_error.work);
1753 i915_destroy_error_state(dev);
1754
1755 if (dev->pdev->msi_enabled)
1756 pci_disable_msi(dev->pdev);
1757
1758 intel_opregion_fini(dev);
1759
1760 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1761 /* Flush any outstanding unpin_work. */
1762 flush_workqueue(dev_priv->wq);
1763
1764 mutex_lock(&dev->struct_mutex);
1765 i915_gem_free_all_phys_object(dev);
1766 i915_gem_cleanup_ringbuffer(dev);
1767 i915_gem_context_fini(dev);
1768 mutex_unlock(&dev->struct_mutex);
1769 i915_gem_cleanup_aliasing_ppgtt(dev);
1770 i915_gem_cleanup_stolen(dev);
1771
1772 if (!I915_NEED_GFX_HWS(dev))
1773 i915_free_hws(dev);
1774 }
1775
1776 if (dev_priv->regs != NULL)
1777 pci_iounmap(dev->pdev, dev_priv->regs);
1778
1779 intel_teardown_gmbus(dev);
1780 intel_teardown_mchbar(dev);
1781
1782 destroy_workqueue(dev_priv->wq);
1783 pm_qos_remove_request(&dev_priv->pm_qos);
1784
1785 if (dev_priv->slab)
1786 kmem_cache_destroy(dev_priv->slab);
1787
1788 pci_dev_put(dev_priv->bridge_dev);
1789 kfree(dev->dev_private);
1790
1791 return 0;
1792 }
1793
i915_driver_open(struct drm_device * dev,struct drm_file * file)1794 int i915_driver_open(struct drm_device *dev, struct drm_file *file)
1795 {
1796 struct drm_i915_file_private *file_priv;
1797
1798 DRM_DEBUG_DRIVER("\n");
1799 file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
1800 if (!file_priv)
1801 return -ENOMEM;
1802
1803 file->driver_priv = file_priv;
1804
1805 spin_lock_init(&file_priv->mm.lock);
1806 INIT_LIST_HEAD(&file_priv->mm.request_list);
1807
1808 idr_init(&file_priv->context_idr);
1809
1810 return 0;
1811 }
1812
1813 /**
1814 * i915_driver_lastclose - clean up after all DRM clients have exited
1815 * @dev: DRM device
1816 *
1817 * Take care of cleaning up after all DRM clients have exited. In the
1818 * mode setting case, we want to restore the kernel's initial mode (just
1819 * in case the last client left us in a bad state).
1820 *
1821 * Additionally, in the non-mode setting case, we'll tear down the GTT
1822 * and DMA structures, since the kernel won't be using them, and clea
1823 * up any GEM state.
1824 */
i915_driver_lastclose(struct drm_device * dev)1825 void i915_driver_lastclose(struct drm_device * dev)
1826 {
1827 drm_i915_private_t *dev_priv = dev->dev_private;
1828
1829 /* On gen6+ we refuse to init without kms enabled, but then the drm core
1830 * goes right around and calls lastclose. Check for this and don't clean
1831 * up anything. */
1832 if (!dev_priv)
1833 return;
1834
1835 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1836 intel_fb_restore_mode(dev);
1837 vga_switcheroo_process_delayed_switch();
1838 return;
1839 }
1840
1841 i915_gem_lastclose(dev);
1842
1843 i915_dma_cleanup(dev);
1844 }
1845
i915_driver_preclose(struct drm_device * dev,struct drm_file * file_priv)1846 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1847 {
1848 i915_gem_context_close(dev, file_priv);
1849 i915_gem_release(dev, file_priv);
1850 }
1851
i915_driver_postclose(struct drm_device * dev,struct drm_file * file)1852 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
1853 {
1854 struct drm_i915_file_private *file_priv = file->driver_priv;
1855
1856 kfree(file_priv);
1857 }
1858
1859 struct drm_ioctl_desc i915_ioctls[] = {
1860 DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1861 DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1862 DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH),
1863 DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1864 DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1865 DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1866 DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH),
1867 DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1868 DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
1869 DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
1870 DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1871 DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1872 DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1873 DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1874 DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH),
1875 DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1876 DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1877 DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1878 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
1879 DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED),
1880 DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1881 DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
1882 DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
1883 DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_UNLOCKED),
1884 DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_UNLOCKED),
1885 DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED),
1886 DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1887 DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1888 DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED),
1889 DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED),
1890 DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
1891 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED),
1892 DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
1893 DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
1894 DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
1895 DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED),
1896 DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED),
1897 DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED),
1898 DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
1899 DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
1900 DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1901 DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1902 DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1903 DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
1904 DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED),
1905 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_UNLOCKED),
1906 DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_UNLOCKED),
1907 DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_UNLOCKED),
1908 };
1909
1910 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1911
1912 /*
1913 * This is really ugly: Because old userspace abused the linux agp interface to
1914 * manage the gtt, we need to claim that all intel devices are agp. For
1915 * otherwise the drm core refuses to initialize the agp support code.
1916 */
i915_driver_device_is_agp(struct drm_device * dev)1917 int i915_driver_device_is_agp(struct drm_device * dev)
1918 {
1919 return 1;
1920 }
1921