1 /* BEGIN CSTYLED */
2
3 /* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
4 */
5 /*
6 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
7 * Copyright (c) 2009, Intel Corporation.
8 * All Rights Reserved.
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the
12 * "Software"), to deal in the Software without restriction, including
13 * without limitation the rights to use, copy, modify, merge, publish,
14 * distribute, sub license, and/or sell copies of the Software, and to
15 * permit persons to whom the Software is furnished to do so, subject to
16 * the following conditions:
17 *
18 * The above copyright notice and this permission notice (including the
19 * next paragraph) shall be included in all copies or substantial portions
20 * of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
25 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
26 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
27 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
28 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 *
30 */
31
32 /*
33 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
34 * Use is subject to license terms.
35 */
36
37 #include "drmP.h"
38 #include "drm.h"
39 #include "i915_drm.h"
40 #include "i915_drv.h"
41
42
43
44 /* Really want an OS-independent resettable timer. Would like to have
45 * this loop run for (eg) 3 sec, but have the timer reset every time
46 * the head pointer changes, so that EBUSY only happens if the ring
47 * actually stalls for (eg) 3 seconds.
48 */
49 /*ARGSUSED*/
i915_wait_ring(drm_device_t * dev,int n,const char * caller)50 int i915_wait_ring(drm_device_t * dev, int n, const char *caller)
51 {
52 drm_i915_private_t *dev_priv = dev->dev_private;
53 drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
54 u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
55 u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
56 u32 last_acthd = I915_READ(acthd_reg);
57 u32 acthd;
58 int i;
59
60 for (i = 0; i < 100000; i++) {
61 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
62 acthd = I915_READ(acthd_reg);
63 ring->space = ring->head - (ring->tail + 8);
64 if (ring->space < 0)
65 ring->space += ring->Size;
66 if (ring->space >= n)
67 return 0;
68
69 if (ring->head != last_head)
70 i = 0;
71
72 if (acthd != last_acthd)
73 i = 0;
74
75 last_head = ring->head;
76 last_acthd = acthd;
77 DRM_UDELAY(10);
78 }
79
80 return (EBUSY);
81 }
82
i915_init_hardware_status(drm_device_t * dev)83 int i915_init_hardware_status(drm_device_t *dev)
84 {
85 drm_i915_private_t *dev_priv = dev->dev_private;
86 drm_dma_handle_t *dmah;
87
88 /* Program Hardware Status Page */
89 dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff,1);
90
91 if (!dmah) {
92 DRM_ERROR("Can not allocate hardware status page\n");
93 return -ENOMEM;
94 }
95
96 dev_priv->status_page_dmah = dmah;
97 dev_priv->hw_status_page = (void *)dmah->vaddr;
98 dev_priv->dma_status_page = dmah->paddr;
99
100 (void) memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
101
102 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
103 (void) I915_READ(HWS_PGA);
104
105 DRM_DEBUG("Enabled hardware status page add 0x%lx read GEM HWS 0x%x\n",dev_priv->hw_status_page, READ_HWSP(dev_priv, 0x20));
106 return 0;
107 }
108
i915_free_hardware_status(drm_device_t * dev)109 void i915_free_hardware_status(drm_device_t *dev)
110 {
111 drm_i915_private_t *dev_priv = dev->dev_private;
112 if (!I915_NEED_GFX_HWS(dev)) {
113 if (dev_priv->status_page_dmah) {
114 DRM_DEBUG("free status_page_dmal %x", dev_priv->status_page_dmah);
115 drm_pci_free(dev, dev_priv->status_page_dmah);
116 dev_priv->status_page_dmah = NULL;
117 /* Need to rewrite hardware status page */
118 I915_WRITE(HWS_PGA, 0x1ffff000);
119 }
120 } else {
121 if (dev_priv->status_gfx_addr) {
122 DRM_DEBUG("free status_gfx_addr %x", dev_priv->status_gfx_addr);
123 dev_priv->status_gfx_addr = 0;
124 drm_core_ioremapfree(&dev_priv->hws_map, dev);
125 I915_WRITE(HWS_PGA, 0x1ffff000);
126 }
127 }
128
129 }
130
i915_kernel_lost_context(drm_device_t * dev)131 void i915_kernel_lost_context(drm_device_t * dev)
132 {
133 drm_i915_private_t *dev_priv = dev->dev_private;
134 drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
135
136 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
137 ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
138 ring->space = ring->head - (ring->tail + 8);
139 if (ring->space < 0)
140 ring->space += ring->Size;
141
142 }
143
i915_dma_cleanup(drm_device_t * dev)144 static int i915_dma_cleanup(drm_device_t * dev)
145 {
146 drm_i915_private_t *dev_priv =
147 (drm_i915_private_t *) dev->dev_private;
148
149 /* Make sure interrupts are disabled here because the uninstall ioctl
150 * may not have been called from userspace and after dev_private
151 * is freed, it's too late.
152 */
153 if (dev->irq_enabled)
154 (void) drm_irq_uninstall(dev);
155
156 if (dev_priv->ring.virtual_start) {
157 drm_core_ioremapfree(&dev_priv->ring.map, dev);
158 dev_priv->ring.virtual_start = 0;
159 dev_priv->ring.map.handle = 0;
160 dev_priv->ring.map.size = 0;
161 }
162
163 #ifdef I915_HAVE_GEM
164 if (I915_NEED_GFX_HWS(dev))
165 #endif
166 i915_free_hardware_status(dev);
167
168 dev_priv->sarea = NULL;
169 dev_priv->sarea_priv = NULL;
170
171 return 0;
172 }
173
i915_initialize(drm_device_t * dev,drm_i915_init_t * init)174 static int i915_initialize(drm_device_t * dev,
175 drm_i915_init_t * init)
176 {
177 drm_i915_private_t *dev_priv =
178 (drm_i915_private_t *)dev->dev_private;
179
180 DRM_GETSAREA();
181 if (!dev_priv->sarea) {
182 DRM_ERROR("can not find sarea!\n");
183 dev->dev_private = (void *)dev_priv;
184 (void) i915_dma_cleanup(dev);
185 return (EINVAL);
186 }
187
188 dev_priv->sarea_priv = (drm_i915_sarea_t *)(uintptr_t)
189 ((u8 *) dev_priv->sarea->handle +
190 init->sarea_priv_offset);
191
192 if (init->ring_size != 0) {
193 if (dev_priv->ring.ring_obj != NULL) {
194 (void) i915_dma_cleanup(dev);
195 DRM_ERROR("Client tried to initialize ringbuffer in "
196 "GEM mode\n");
197 return -EINVAL;
198 }
199
200 dev_priv->ring.Size = init->ring_size;
201 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
202
203 dev_priv->ring.map.offset = (u_offset_t)init->ring_start;
204 dev_priv->ring.map.size = init->ring_size;
205 dev_priv->ring.map.type = 0;
206 dev_priv->ring.map.flags = 0;
207 dev_priv->ring.map.mtrr = 0;
208
209 drm_core_ioremap(&dev_priv->ring.map, dev);
210
211 if (dev_priv->ring.map.handle == NULL) {
212 (void) i915_dma_cleanup(dev);
213 DRM_ERROR("can not ioremap virtual address for"
214 " ring buffer\n");
215 return (ENOMEM);
216 }
217 }
218
219 dev_priv->ring.virtual_start = (u8 *)dev_priv->ring.map.dev_addr;
220 dev_priv->cpp = init->cpp;
221 dev_priv->back_offset = init->back_offset;
222 dev_priv->front_offset = init->front_offset;
223 dev_priv->current_page = 0;
224 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
225
226 /* Allow hardware batchbuffers unless told otherwise.
227 */
228 dev_priv->allow_batchbuffer = 1;
229 return 0;
230 }
231
i915_dma_resume(drm_device_t * dev)232 static int i915_dma_resume(drm_device_t * dev)
233 {
234 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
235
236 if (!dev_priv->sarea) {
237 DRM_ERROR("can not find sarea!\n");
238 return (EINVAL);
239 }
240
241 if (dev_priv->ring.map.handle == NULL) {
242 DRM_ERROR("can not ioremap virtual address for"
243 " ring buffer\n");
244 return (ENOMEM);
245 }
246
247 /* Program Hardware Status Page */
248 if (!dev_priv->hw_status_page) {
249 DRM_ERROR("Can not find hardware status page\n");
250 return (EINVAL);
251 }
252 DRM_DEBUG("i915_dma_resume hw status page @ %p\n", dev_priv->hw_status_page);
253
254 if (!I915_NEED_GFX_HWS(dev))
255 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
256 else
257 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
258 DRM_DEBUG("Enabled hardware status page\n");
259
260 return 0;
261 }
262
263 /*ARGSUSED*/
i915_dma_init(DRM_IOCTL_ARGS)264 static int i915_dma_init(DRM_IOCTL_ARGS)
265 {
266 DRM_DEVICE;
267 drm_i915_init_t init;
268 int retcode = 0;
269
270 DRM_COPYFROM_WITH_RETURN(&init, (drm_i915_init_t *)data, sizeof(init));
271
272 switch (init.func) {
273 case I915_INIT_DMA:
274 retcode = i915_initialize(dev, &init);
275 break;
276 case I915_CLEANUP_DMA:
277 retcode = i915_dma_cleanup(dev);
278 break;
279 case I915_RESUME_DMA:
280 retcode = i915_dma_resume(dev);
281 break;
282 default:
283 retcode = EINVAL;
284 break;
285 }
286
287 return retcode;
288 }
289
290 /* Implement basically the same security restrictions as hardware does
291 * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
292 *
293 * Most of the calculations below involve calculating the size of a
294 * particular instruction. It's important to get the size right as
295 * that tells us where the next instruction to check is. Any illegal
296 * instruction detected will be given a size of zero, which is a
297 * signal to abort the rest of the buffer.
298 */
do_validate_cmd(int cmd)299 static int do_validate_cmd(int cmd)
300 {
301 switch (((cmd >> 29) & 0x7)) {
302 case 0x0:
303 switch ((cmd >> 23) & 0x3f) {
304 case 0x0:
305 return 1; /* MI_NOOP */
306 case 0x4:
307 return 1; /* MI_FLUSH */
308 default:
309 return 0; /* disallow everything else */
310 }
311 #ifndef __SUNPRO_C
312 break;
313 #endif
314 case 0x1:
315 return 0; /* reserved */
316 case 0x2:
317 return (cmd & 0xff) + 2; /* 2d commands */
318 case 0x3:
319 if (((cmd >> 24) & 0x1f) <= 0x18)
320 return 1;
321
322 switch ((cmd >> 24) & 0x1f) {
323 case 0x1c:
324 return 1;
325 case 0x1d:
326 switch ((cmd >> 16) & 0xff) {
327 case 0x3:
328 return (cmd & 0x1f) + 2;
329 case 0x4:
330 return (cmd & 0xf) + 2;
331 default:
332 return (cmd & 0xffff) + 2;
333 }
334 case 0x1e:
335 if (cmd & (1 << 23))
336 return (cmd & 0xffff) + 1;
337 else
338 return 1;
339 case 0x1f:
340 if ((cmd & (1 << 23)) == 0) /* inline vertices */
341 return (cmd & 0x1ffff) + 2;
342 else if (cmd & (1 << 17)) /* indirect random */
343 if ((cmd & 0xffff) == 0)
344 return 0; /* unknown length, too hard */
345 else
346 return (((cmd & 0xffff) + 1) / 2) + 1;
347 else
348 return 2; /* indirect sequential */
349 default:
350 return 0;
351 }
352 default:
353 return 0;
354 }
355
356 #ifndef __SUNPRO_C
357 return 0;
358 #endif
359 }
360
validate_cmd(int cmd)361 static int validate_cmd(int cmd)
362 {
363 int ret = do_validate_cmd(cmd);
364
365 /* printk("validate_cmd( %x ): %d\n", cmd, ret); */
366
367 return ret;
368 }
369
i915_emit_cmds(drm_device_t * dev,int __user * buffer,int dwords)370 static int i915_emit_cmds(drm_device_t * dev, int __user * buffer, int dwords)
371 {
372 drm_i915_private_t *dev_priv = dev->dev_private;
373 int i;
374 RING_LOCALS;
375
376 if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8) {
377 DRM_ERROR(" emit cmds invalid arg");
378 return (EINVAL);
379 }
380 BEGIN_LP_RING((dwords+1)&~1);
381
382 for (i = 0; i < dwords;) {
383 int cmd, sz;
384
385 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd))) {
386 DRM_ERROR("emit cmds failed to get cmd from user");
387 return (EINVAL);
388 }
389
390 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords) {
391 DRM_ERROR("emit cmds invalid");
392 return (EINVAL);
393 }
394 OUT_RING(cmd);
395
396 while (++i, --sz) {
397 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i],
398 sizeof(cmd))) {
399 DRM_ERROR("emit cmds failed get cmds");
400 return (EINVAL);
401 }
402 OUT_RING(cmd);
403 }
404 }
405
406 if (dwords & 1)
407 OUT_RING(0);
408
409 ADVANCE_LP_RING();
410
411 return 0;
412 }
413
i915_emit_box(drm_device_t * dev,drm_clip_rect_t __user * boxes,int i,int DR1,int DR4)414 int i915_emit_box(drm_device_t * dev,
415 drm_clip_rect_t __user * boxes,
416 int i, int DR1, int DR4)
417 {
418 drm_i915_private_t *dev_priv = dev->dev_private;
419 drm_clip_rect_t box;
420 RING_LOCALS;
421
422 if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) {
423 DRM_ERROR("emit box failed to copy from user");
424 return (EFAULT);
425 }
426
427 if (box.y2 <= box.y1 || box.x2 <= box.x1) {
428 DRM_ERROR("Bad box %d,%d..%d,%d\n",
429 box.x1, box.y1, box.x2, box.y2);
430 return (EINVAL);
431 }
432
433 if (IS_I965G(dev)) {
434 BEGIN_LP_RING(4);
435 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
436 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
437 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
438 OUT_RING(DR4);
439 ADVANCE_LP_RING();
440 } else {
441 BEGIN_LP_RING(6);
442 OUT_RING(GFX_OP_DRAWRECT_INFO);
443 OUT_RING(DR1);
444 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
445 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
446 OUT_RING(DR4);
447 OUT_RING(0);
448 ADVANCE_LP_RING();
449 }
450
451 return 0;
452 }
453
454 /* XXX: Emitting the counter should really be moved to part of the IRQ
455 * emit. For now, do it in both places:
456 */
457
i915_emit_breadcrumb(drm_device_t * dev)458 void i915_emit_breadcrumb(drm_device_t *dev)
459 {
460 drm_i915_private_t *dev_priv = dev->dev_private;
461 RING_LOCALS;
462
463 dev_priv->counter++;
464 if (dev_priv->counter > 0x7FFFFFFFUL)
465 dev_priv->counter = 0;
466 if (dev_priv->sarea_priv)
467 dev_priv->sarea_priv->last_enqueue = dev_priv->counter;
468
469
470 BEGIN_LP_RING(4);
471 OUT_RING(MI_STORE_DWORD_INDEX);
472 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
473 OUT_RING(dev_priv->counter);
474 OUT_RING(0);
475 ADVANCE_LP_RING();
476
477 }
478
i915_dispatch_cmdbuffer(drm_device_t * dev,drm_i915_cmdbuffer_t * cmd)479 static int i915_dispatch_cmdbuffer(drm_device_t * dev,
480 drm_i915_cmdbuffer_t * cmd)
481 {
482 int nbox = cmd->num_cliprects;
483 int i = 0, count, ret;
484
485 if (cmd->sz & 0x3) {
486 DRM_ERROR("alignment");
487 return (EINVAL);
488 }
489
490 i915_kernel_lost_context(dev);
491
492 count = nbox ? nbox : 1;
493
494 for (i = 0; i < count; i++) {
495 if (i < nbox) {
496 ret = i915_emit_box(dev, cmd->cliprects, i,
497 cmd->DR1, cmd->DR4);
498 if (ret)
499 return ret;
500 }
501
502 ret = i915_emit_cmds(dev, (int __user *)(void *)cmd->buf, cmd->sz / 4);
503 if (ret)
504 return ret;
505 }
506
507 i915_emit_breadcrumb( dev );
508 return 0;
509 }
510
i915_dispatch_batchbuffer(drm_device_t * dev,drm_i915_batchbuffer_t * batch)511 static int i915_dispatch_batchbuffer(drm_device_t * dev,
512 drm_i915_batchbuffer_t * batch)
513 {
514 drm_i915_private_t *dev_priv = dev->dev_private;
515 drm_clip_rect_t __user *boxes = batch->cliprects;
516 int nbox = batch->num_cliprects;
517 int i = 0, count;
518 RING_LOCALS;
519
520 if ((batch->start | batch->used) & 0x7) {
521 DRM_ERROR("alignment");
522 return (EINVAL);
523 }
524
525 i915_kernel_lost_context(dev);
526
527 count = nbox ? nbox : 1;
528
529 for (i = 0; i < count; i++) {
530 if (i < nbox) {
531 int ret = i915_emit_box(dev, boxes, i,
532 batch->DR1, batch->DR4);
533 if (ret)
534 return ret;
535 }
536
537 if (IS_I830(dev) || IS_845G(dev)) {
538 BEGIN_LP_RING(4);
539 OUT_RING(MI_BATCH_BUFFER);
540 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
541 OUT_RING(batch->start + batch->used - 4);
542 OUT_RING(0);
543 ADVANCE_LP_RING();
544 } else {
545 BEGIN_LP_RING(2);
546 if (IS_I965G(dev)) {
547 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
548 OUT_RING(batch->start);
549 } else {
550 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
551 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
552 }
553 ADVANCE_LP_RING();
554 }
555 }
556
557 i915_emit_breadcrumb( dev );
558
559 return 0;
560 }
561
i915_dispatch_flip(struct drm_device * dev,int planes)562 static int i915_dispatch_flip(struct drm_device * dev, int planes)
563 {
564 drm_i915_private_t *dev_priv = dev->dev_private;
565 RING_LOCALS;
566
567 if (!dev_priv->sarea_priv)
568 return -EINVAL;
569
570 DRM_DEBUG("planes=0x%x pfCurrentPage=%d\n",
571 planes, dev_priv->sarea_priv->pf_current_page);
572
573 i915_kernel_lost_context(dev);
574
575 BEGIN_LP_RING(2);
576 OUT_RING(MI_FLUSH | MI_READ_FLUSH);
577 OUT_RING(0);
578 ADVANCE_LP_RING();
579
580 BEGIN_LP_RING(6);
581 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
582 OUT_RING(0);
583 if (dev_priv->current_page == 0) {
584 OUT_RING(dev_priv->back_offset);
585 dev_priv->current_page = 1;
586 } else {
587 OUT_RING(dev_priv->front_offset);
588 dev_priv->current_page = 0;
589 }
590 OUT_RING(0);
591 ADVANCE_LP_RING();
592
593 BEGIN_LP_RING(2);
594 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
595 OUT_RING(0);
596 ADVANCE_LP_RING();
597
598 dev_priv->sarea_priv->last_enqueue = dev_priv->counter++;
599
600 BEGIN_LP_RING(4);
601 OUT_RING(MI_STORE_DWORD_INDEX);
602 OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
603 OUT_RING(dev_priv->counter);
604 OUT_RING(0);
605 ADVANCE_LP_RING();
606
607 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
608 return 0;
609 }
610
i915_quiescent(drm_device_t * dev)611 static int i915_quiescent(drm_device_t * dev)
612 {
613 drm_i915_private_t *dev_priv = dev->dev_private;
614 int ret;
615 i915_kernel_lost_context(dev);
616 ret = i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__);
617
618 if (ret)
619 {
620 i915_kernel_lost_context (dev);
621 DRM_ERROR ("not quiescent head %08x tail %08x space %08x\n",
622 dev_priv->ring.head,
623 dev_priv->ring.tail,
624 dev_priv->ring.space);
625 }
626 return ret;
627 }
628
629 /*ARGSUSED*/
i915_flush_ioctl(DRM_IOCTL_ARGS)630 static int i915_flush_ioctl(DRM_IOCTL_ARGS)
631 {
632 int ret;
633 DRM_DEVICE;
634
635 LOCK_TEST_WITH_RETURN(dev, fpriv);
636
637 spin_lock(&dev->struct_mutex);
638 ret = i915_quiescent(dev);
639 spin_unlock(&dev->struct_mutex);
640
641 return ret;
642 }
643
644 /*ARGSUSED*/
i915_batchbuffer(DRM_IOCTL_ARGS)645 static int i915_batchbuffer(DRM_IOCTL_ARGS)
646 {
647 DRM_DEVICE;
648 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
649 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
650 dev_priv->sarea_priv;
651 drm_i915_batchbuffer_t batch;
652 int ret;
653
654 if (!dev_priv->allow_batchbuffer) {
655 DRM_ERROR("Batchbuffer ioctl disabled\n");
656 return (EINVAL);
657 }
658
659 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
660 drm_i915_batchbuffer32_t batchbuffer32_t;
661
662 DRM_COPYFROM_WITH_RETURN(&batchbuffer32_t,
663 (void *) data, sizeof (batchbuffer32_t));
664
665 batch.start = batchbuffer32_t.start;
666 batch.used = batchbuffer32_t.used;
667 batch.DR1 = batchbuffer32_t.DR1;
668 batch.DR4 = batchbuffer32_t.DR4;
669 batch.num_cliprects = batchbuffer32_t.num_cliprects;
670 batch.cliprects = (drm_clip_rect_t __user *)
671 (uintptr_t)batchbuffer32_t.cliprects;
672 } else
673 DRM_COPYFROM_WITH_RETURN(&batch, (void *) data,
674 sizeof(batch));
675
676 DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d, counter %d\n",
677 batch.start, batch.used, batch.num_cliprects, dev_priv->counter);
678
679 LOCK_TEST_WITH_RETURN(dev, fpriv);
680
681 /*
682 if (batch.num_cliprects && DRM_VERIFYAREA_READ(batch.cliprects,
683 batch.num_cliprects *
684 sizeof(drm_clip_rect_t)))
685 return (EFAULT);
686
687 */
688
689 spin_lock(&dev->struct_mutex);
690 ret = i915_dispatch_batchbuffer(dev, &batch);
691 spin_unlock(&dev->struct_mutex);
692 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
693
694 return ret;
695 }
696
697 /*ARGSUSED*/
i915_cmdbuffer(DRM_IOCTL_ARGS)698 static int i915_cmdbuffer(DRM_IOCTL_ARGS)
699 {
700 DRM_DEVICE;
701 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
702 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
703 dev_priv->sarea_priv;
704 drm_i915_cmdbuffer_t cmdbuf;
705 int ret;
706
707 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
708 drm_i915_cmdbuffer32_t cmdbuffer32_t;
709
710 DRM_COPYFROM_WITH_RETURN(&cmdbuffer32_t,
711 (drm_i915_cmdbuffer32_t __user *) data,
712 sizeof (drm_i915_cmdbuffer32_t));
713
714 cmdbuf.buf = (char __user *)(uintptr_t)cmdbuffer32_t.buf;
715 cmdbuf.sz = cmdbuffer32_t.sz;
716 cmdbuf.DR1 = cmdbuffer32_t.DR1;
717 cmdbuf.DR4 = cmdbuffer32_t.DR4;
718 cmdbuf.num_cliprects = cmdbuffer32_t.num_cliprects;
719 cmdbuf.cliprects = (drm_clip_rect_t __user *)
720 (uintptr_t)cmdbuffer32_t.cliprects;
721 } else
722 DRM_COPYFROM_WITH_RETURN(&cmdbuf, (void *) data,
723 sizeof(cmdbuf));
724
725 DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
726 cmdbuf.buf, cmdbuf.sz, cmdbuf.num_cliprects);
727
728 LOCK_TEST_WITH_RETURN(dev, fpriv);
729
730 /*
731 if (cmdbuf.num_cliprects &&
732 DRM_VERIFYAREA_READ(cmdbuf.cliprects,
733 cmdbuf.num_cliprects *
734 sizeof(drm_clip_rect_t))) {
735 DRM_ERROR("Fault accessing cliprects\n");
736 return (EFAULT);
737 }
738 */
739
740 spin_lock(&dev->struct_mutex);
741 ret = i915_dispatch_cmdbuffer(dev, &cmdbuf);
742 spin_unlock(&dev->struct_mutex);
743 if (ret) {
744 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
745 return ret;
746 }
747
748 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
749 return 0;
750 }
751
752 /*ARGSUSED*/
i915_flip_bufs(DRM_IOCTL_ARGS)753 static int i915_flip_bufs(DRM_IOCTL_ARGS)
754 {
755 DRM_DEVICE;
756 drm_i915_flip_t param;
757 int ret;
758 DRM_COPYFROM_WITH_RETURN(¶m, (drm_i915_flip_t *) data,
759 sizeof(param));
760
761 DRM_DEBUG("i915_flip_bufs\n");
762
763 LOCK_TEST_WITH_RETURN(dev, fpriv);
764
765 spin_lock(&dev->struct_mutex);
766 ret = i915_dispatch_flip(dev, param.pipes);
767 spin_unlock(&dev->struct_mutex);
768 return ret;
769 }
770
771 /*ARGSUSED*/
i915_getparam(DRM_IOCTL_ARGS)772 static int i915_getparam(DRM_IOCTL_ARGS)
773 {
774 DRM_DEVICE;
775 drm_i915_private_t *dev_priv = dev->dev_private;
776 drm_i915_getparam_t param;
777 int value;
778
779 if (!dev_priv) {
780 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
781 return (EINVAL);
782 }
783
784 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
785 drm_i915_getparam32_t getparam32_t;
786
787 DRM_COPYFROM_WITH_RETURN(&getparam32_t,
788 (drm_i915_getparam32_t __user *) data,
789 sizeof (drm_i915_getparam32_t));
790
791 param.param = getparam32_t.param;
792 param.value = (int __user *)(uintptr_t)getparam32_t.value;
793 } else
794 DRM_COPYFROM_WITH_RETURN(¶m,
795 (drm_i915_getparam_t *) data, sizeof(param));
796
797 switch (param.param) {
798 case I915_PARAM_IRQ_ACTIVE:
799 value = dev->irq_enabled ? 1 : 0;
800 break;
801 case I915_PARAM_ALLOW_BATCHBUFFER:
802 value = dev_priv->allow_batchbuffer ? 1 : 0;
803 break;
804 case I915_PARAM_LAST_DISPATCH:
805 value = READ_BREADCRUMB(dev_priv);
806 break;
807 case I915_PARAM_CHIPSET_ID:
808 value = dev->pci_device;
809 break;
810 case I915_PARAM_HAS_GEM:
811 value = dev->driver->use_gem;
812 break;
813 default:
814 DRM_ERROR("Unknown get parameter %d\n", param.param);
815 return (EINVAL);
816 }
817
818 if (DRM_COPY_TO_USER(param.value, &value, sizeof(int))) {
819 DRM_ERROR("i915_getparam failed\n");
820 return (EFAULT);
821 }
822 return 0;
823 }
824
825 /*ARGSUSED*/
i915_setparam(DRM_IOCTL_ARGS)826 static int i915_setparam(DRM_IOCTL_ARGS)
827 {
828 DRM_DEVICE;
829 drm_i915_private_t *dev_priv = dev->dev_private;
830 drm_i915_setparam_t param;
831
832 if (!dev_priv) {
833 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
834 return (EINVAL);
835 }
836
837 DRM_COPYFROM_WITH_RETURN(¶m, (drm_i915_setparam_t *) data,
838 sizeof(param));
839
840 switch (param.param) {
841 case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
842 break;
843 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
844 dev_priv->tex_lru_log_granularity = param.value;
845 break;
846 case I915_SETPARAM_ALLOW_BATCHBUFFER:
847 dev_priv->allow_batchbuffer = param.value;
848 break;
849 default:
850 DRM_ERROR("unknown set parameter %d\n", param.param);
851 return (EINVAL);
852 }
853
854 return 0;
855 }
856
857 /*ARGSUSED*/
i915_set_status_page(DRM_IOCTL_ARGS)858 static int i915_set_status_page(DRM_IOCTL_ARGS)
859 {
860 DRM_DEVICE;
861 drm_i915_private_t *dev_priv = dev->dev_private;
862 drm_i915_hws_addr_t hws;
863
864 if (!I915_NEED_GFX_HWS(dev))
865 return (EINVAL);
866
867 if (!dev_priv) {
868 DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
869 return (EINVAL);
870 }
871 DRM_COPYFROM_WITH_RETURN(&hws, (drm_i915_hws_addr_t __user *) data,
872 sizeof(hws));
873 DRM_ERROR("i915_set_status_page set status page addr 0x%08x\n", (u32)hws.addr);
874
875 dev_priv->status_gfx_addr = hws.addr & (0x1ffff<<12);
876 DRM_DEBUG("set gfx_addr 0x%08x\n", dev_priv->status_gfx_addr);
877
878 dev_priv->hws_map.offset =
879 (u_offset_t)dev->agp->agp_info.agpi_aperbase + hws.addr;
880 dev_priv->hws_map.size = 4 * 1024; /* 4K pages */
881 dev_priv->hws_map.type = 0;
882 dev_priv->hws_map.flags = 0;
883 dev_priv->hws_map.mtrr = 0;
884
885 DRM_DEBUG("set status page: i915_set_status_page: mapoffset 0x%llx\n",
886 dev_priv->hws_map.offset);
887 drm_core_ioremap(&dev_priv->hws_map, dev);
888 if (dev_priv->hws_map.handle == NULL) {
889 dev->dev_private = (void *)dev_priv;
890 (void) i915_dma_cleanup(dev);
891 dev_priv->status_gfx_addr = 0;
892 DRM_ERROR("can not ioremap virtual address for"
893 " G33 hw status page\n");
894 return (ENOMEM);
895 }
896 dev_priv->hw_status_page = dev_priv->hws_map.dev_addr;
897
898 (void) memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
899 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
900 DRM_DEBUG("load hws 0x2080 with gfx mem 0x%x\n",
901 dev_priv->status_gfx_addr);
902 DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page);
903 return 0;
904 }
905
906 /*ARGSUSED*/
i915_driver_load(drm_device_t * dev,unsigned long flags)907 int i915_driver_load(drm_device_t *dev, unsigned long flags)
908 {
909 struct drm_i915_private *dev_priv;
910 unsigned long base, size;
911 int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
912
913 /* i915 has 4 more counters */
914 dev->counters += 4;
915 dev->types[6] = _DRM_STAT_IRQ;
916 dev->types[7] = _DRM_STAT_PRIMARY;
917 dev->types[8] = _DRM_STAT_SECONDARY;
918 dev->types[9] = _DRM_STAT_DMA;
919
920 dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER);
921 if (dev_priv == NULL)
922 return ENOMEM;
923
924 (void) memset(dev_priv, 0, sizeof(drm_i915_private_t));
925 dev->dev_private = (void *)dev_priv;
926 dev_priv->dev = dev;
927
928 /* Add register map (needed for suspend/resume) */
929
930 base = drm_get_resource_start(dev, mmio_bar);
931 size = drm_get_resource_len(dev, mmio_bar);
932 dev_priv->mmio_map = drm_alloc(sizeof (drm_local_map_t), DRM_MEM_MAPS);
933 dev_priv->mmio_map->offset = base;
934 dev_priv->mmio_map->size = size;
935 dev_priv->mmio_map->type = _DRM_REGISTERS;
936 dev_priv->mmio_map->flags = _DRM_REMOVABLE;
937 (void) drm_ioremap(dev, dev_priv->mmio_map);
938
939 DRM_DEBUG("i915_driverload mmio %p mmio_map->dev_addr %x", dev_priv->mmio_map, dev_priv->mmio_map->dev_addr);
940
941 #if defined(__i386)
942 dev->driver->use_gem = 0;
943 #else
944 if (IS_I965G(dev)) {
945 dev->driver->use_gem = 1;
946 } else {
947 dev->driver->use_gem = 0;
948 }
949 #endif /* __i386 */
950
951 dev->driver->get_vblank_counter = i915_get_vblank_counter;
952 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
953 #if defined(__i386)
954 if (IS_G4X(dev) || IS_IGDNG(dev) || IS_GM45(dev))
955 #else
956 if (IS_G4X(dev) || IS_IGDNG(dev))
957 #endif
958 {
959 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
960 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
961 }
962
963
964 #ifdef I915_HAVE_GEM
965 i915_gem_load(dev);
966 #endif
967
968 if (!I915_NEED_GFX_HWS(dev)) {
969 ret = i915_init_hardware_status(dev);
970 if(ret)
971 return ret;
972 }
973
974 mutex_init(&dev_priv->user_irq_lock, "userirq", MUTEX_DRIVER, NULL);
975 mutex_init(&dev_priv->error_lock, "error_lock", MUTEX_DRIVER, NULL);
976
977 ret = drm_vblank_init(dev, I915_NUM_PIPE);
978 if (ret) {
979 (void) i915_driver_unload(dev);
980 return ret;
981 }
982
983 return ret;
984 }
985
i915_driver_unload(struct drm_device * dev)986 int i915_driver_unload(struct drm_device *dev)
987 {
988 drm_i915_private_t *dev_priv = dev->dev_private;
989
990 i915_free_hardware_status(dev);
991
992 drm_rmmap(dev, dev_priv->mmio_map);
993
994 mutex_destroy(&dev_priv->user_irq_lock);
995
996 drm_free(dev->dev_private, sizeof(drm_i915_private_t),
997 DRM_MEM_DRIVER);
998 dev->dev_private = NULL;
999
1000 return 0;
1001 }
1002
1003 /*ARGSUSED*/
i915_driver_open(drm_device_t * dev,struct drm_file * file_priv)1004 int i915_driver_open(drm_device_t * dev, struct drm_file *file_priv)
1005 {
1006 struct drm_i915_file_private *i915_file_priv;
1007
1008 DRM_DEBUG("\n");
1009 i915_file_priv = (struct drm_i915_file_private *)
1010 drm_alloc(sizeof(*i915_file_priv), DRM_MEM_FILES);
1011
1012 if (!i915_file_priv)
1013 return -ENOMEM;
1014
1015 file_priv->driver_priv = i915_file_priv;
1016
1017 i915_file_priv->mm.last_gem_seqno = 0;
1018 i915_file_priv->mm.last_gem_throttle_seqno = 0;
1019
1020 return 0;
1021 }
1022
i915_driver_lastclose(drm_device_t * dev)1023 void i915_driver_lastclose(drm_device_t * dev)
1024 {
1025 drm_i915_private_t *dev_priv = dev->dev_private;
1026
1027 /* agp off can use this to get called before dev_priv */
1028 if (!dev_priv)
1029 return;
1030
1031 #ifdef I915_HAVE_GEM
1032 i915_gem_lastclose(dev);
1033 #endif
1034
1035 DRM_GETSAREA();
1036 if (dev_priv->agp_heap)
1037 i915_mem_takedown(&(dev_priv->agp_heap));
1038 (void) i915_dma_cleanup(dev);
1039 }
1040
i915_driver_preclose(drm_device_t * dev,drm_file_t * fpriv)1041 void i915_driver_preclose(drm_device_t * dev, drm_file_t *fpriv)
1042 {
1043 drm_i915_private_t *dev_priv = dev->dev_private;
1044 i915_mem_release(dev, fpriv, dev_priv->agp_heap);
1045 }
1046
1047 /*ARGSUSED*/
i915_driver_postclose(drm_device_t * dev,struct drm_file * file_priv)1048 void i915_driver_postclose(drm_device_t * dev, struct drm_file *file_priv)
1049 {
1050 struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
1051
1052 drm_free(i915_file_priv, sizeof(*i915_file_priv), DRM_MEM_FILES);
1053 }
1054
1055 drm_ioctl_desc_t i915_ioctls[] = {
1056 [DRM_IOCTL_NR(DRM_I915_INIT)] =
1057 {i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1058 [DRM_IOCTL_NR(DRM_I915_FLUSH)] =
1059 {i915_flush_ioctl, DRM_AUTH},
1060 [DRM_IOCTL_NR(DRM_I915_FLIP)] =
1061 {i915_flip_bufs, DRM_AUTH},
1062 [DRM_IOCTL_NR(DRM_I915_BATCHBUFFER)] =
1063 {i915_batchbuffer, DRM_AUTH},
1064 [DRM_IOCTL_NR(DRM_I915_IRQ_EMIT)] =
1065 {i915_irq_emit, DRM_AUTH},
1066 [DRM_IOCTL_NR(DRM_I915_IRQ_WAIT)] =
1067 {i915_irq_wait, DRM_AUTH},
1068 [DRM_IOCTL_NR(DRM_I915_GETPARAM)] =
1069 {i915_getparam, DRM_AUTH},
1070 [DRM_IOCTL_NR(DRM_I915_SETPARAM)] =
1071 {i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1072 [DRM_IOCTL_NR(DRM_I915_ALLOC)] =
1073 {i915_mem_alloc, DRM_AUTH},
1074 [DRM_IOCTL_NR(DRM_I915_FREE)] =
1075 {i915_mem_free, DRM_AUTH},
1076 [DRM_IOCTL_NR(DRM_I915_INIT_HEAP)] =
1077 {i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1078 [DRM_IOCTL_NR(DRM_I915_CMDBUFFER)] =
1079 {i915_cmdbuffer, DRM_AUTH},
1080 [DRM_IOCTL_NR(DRM_I915_DESTROY_HEAP)] =
1081 {i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1082 [DRM_IOCTL_NR(DRM_I915_SET_VBLANK_PIPE)] =
1083 {i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1084 [DRM_IOCTL_NR(DRM_I915_GET_VBLANK_PIPE)] =
1085 {i915_vblank_pipe_get, DRM_AUTH},
1086 [DRM_IOCTL_NR(DRM_I915_VBLANK_SWAP)] =
1087 {i915_vblank_swap, DRM_AUTH},
1088 [DRM_IOCTL_NR(DRM_I915_HWS_ADDR)] =
1089 {i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1090 #ifdef I915_HAVE_GEM
1091 [DRM_IOCTL_NR(DRM_I915_GEM_INIT)] =
1092 {i915_gem_init_ioctl, DRM_AUTH},
1093 [DRM_IOCTL_NR(DRM_I915_GEM_EXECBUFFER)] =
1094 {i915_gem_execbuffer, DRM_AUTH},
1095 [DRM_IOCTL_NR(DRM_I915_GEM_PIN)] =
1096 {i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY},
1097 [DRM_IOCTL_NR(DRM_I915_GEM_UNPIN)] =
1098 {i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY},
1099 [DRM_IOCTL_NR(DRM_I915_GEM_BUSY)] =
1100 {i915_gem_busy_ioctl, DRM_AUTH},
1101 [DRM_IOCTL_NR(DRM_I915_GEM_THROTTLE)] =
1102 {i915_gem_throttle_ioctl, DRM_AUTH},
1103 [DRM_IOCTL_NR(DRM_I915_GEM_ENTERVT)] =
1104 {i915_gem_entervt_ioctl, DRM_AUTH},
1105 [DRM_IOCTL_NR(DRM_I915_GEM_LEAVEVT)] =
1106 {i915_gem_leavevt_ioctl, DRM_AUTH},
1107 [DRM_IOCTL_NR(DRM_I915_GEM_CREATE)] =
1108 {i915_gem_create_ioctl, 0},
1109 [DRM_IOCTL_NR(DRM_I915_GEM_PREAD)] =
1110 {i915_gem_pread_ioctl, 0},
1111 [DRM_IOCTL_NR(DRM_I915_GEM_PWRITE)] =
1112 {i915_gem_pwrite_ioctl, 0},
1113 [DRM_IOCTL_NR(DRM_I915_GEM_MMAP)] =
1114 {i915_gem_mmap_ioctl, 0},
1115 [DRM_IOCTL_NR(DRM_I915_GEM_SET_DOMAIN)] =
1116 {i915_gem_set_domain_ioctl, 0},
1117 [DRM_IOCTL_NR(DRM_I915_GEM_SW_FINISH)] =
1118 {i915_gem_sw_finish_ioctl, 0},
1119 [DRM_IOCTL_NR(DRM_I915_GEM_SET_TILING)] =
1120 {i915_gem_set_tiling, 0},
1121 [DRM_IOCTL_NR(DRM_I915_GEM_GET_TILING)] =
1122 {i915_gem_get_tiling, 0},
1123 [DRM_IOCTL_NR(DRM_I915_GEM_GET_APERTURE)] =
1124 {i915_gem_get_aperture_ioctl, 0},
1125 #endif
1126 };
1127
1128 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1129
1130 /**
1131 * Determine if the device really is AGP or not.
1132 *
1133 * All Intel graphics chipsets are treated as AGP, even if they are really
1134 * PCI-e.
1135 *
1136 * \param dev The device to be tested.
1137 *
1138 * \returns
1139 * A value of 1 is always retured to indictate every i9x5 is AGP.
1140 */
1141 /*ARGSUSED*/
i915_driver_device_is_agp(drm_device_t * dev)1142 int i915_driver_device_is_agp(drm_device_t * dev)
1143 {
1144 return 1;
1145 }
1146
1147