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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / gpu / drm / i810 / i810_dma.c
blobaeace37415aac8ae62ab2aa53a3b927ae648fb6c
1 /* i810_dma.c -- DMA support for the i810 -*- linux-c -*-
2 * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
3 *
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
26 *
27 * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
28 * Jeff Hartmann <jhartmann@valinux.com>
29 * Keith Whitwell <keith@tungstengraphics.com>
30 *
31 */
32
33 #include <drm/drmP.h>
34 #include <drm/i810_drm.h>
35 #include "i810_drv.h"
36 #include <linux/interrupt.h> /* For task queue support */
37 #include <linux/delay.h>
38 #include <linux/slab.h>
39 #include <linux/pagemap.h>
40
41 #define I810_BUF_FREE 2
42 #define I810_BUF_CLIENT 1
43 #define I810_BUF_HARDWARE 0
44
45 #define I810_BUF_UNMAPPED 0
46 #define I810_BUF_MAPPED 1
47
48 static struct drm_buf *i810_freelist_get(struct drm_device * dev)
49 {
50 struct drm_device_dma *dma = dev->dma;
51 int i;
52 int used;
53
54 /* Linear search might not be the best solution */
55
56 for (i = 0; i < dma->buf_count; i++) {
57 struct drm_buf *buf = dma->buflist[i];
58 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
59 /* In use is already a pointer */
60 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
61 I810_BUF_CLIENT);
62 if (used == I810_BUF_FREE)
63 return buf;
64 }
65 return NULL;
66 }
67
68 /* This should only be called if the buffer is not sent to the hardware
69 * yet, the hardware updates in use for us once its on the ring buffer.
70 */
71
72 static int i810_freelist_put(struct drm_device *dev, struct drm_buf *buf)
73 {
74 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
75 int used;
76
77 /* In use is already a pointer */
78 used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
79 if (used != I810_BUF_CLIENT) {
80 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
81 return -EINVAL;
82 }
83
84 return 0;
85 }
86
87 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
88 {
89 struct drm_file *priv = filp->private_data;
90 struct drm_device *dev;
91 drm_i810_private_t *dev_priv;
92 struct drm_buf *buf;
93 drm_i810_buf_priv_t *buf_priv;
94
95 dev = priv->minor->dev;
96 dev_priv = dev->dev_private;
97 buf = dev_priv->mmap_buffer;
98 buf_priv = buf->dev_private;
99
100 vma->vm_flags |= VM_DONTCOPY;
101
102 buf_priv->currently_mapped = I810_BUF_MAPPED;
103
104 if (io_remap_pfn_range(vma, vma->vm_start,
105 vma->vm_pgoff,
106 vma->vm_end - vma->vm_start, vma->vm_page_prot))
107 return -EAGAIN;
108 return 0;
109 }
110
111 static const struct file_operations i810_buffer_fops = {
112 .open = drm_open,
113 .release = drm_release,
114 .unlocked_ioctl = drm_ioctl,
115 .mmap = i810_mmap_buffers,
116 #ifdef CONFIG_COMPAT
117 .compat_ioctl = drm_compat_ioctl,
118 #endif
119 .llseek = noop_llseek,
120 };
121
122 static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv)
123 {
124 struct drm_device *dev = file_priv->minor->dev;
125 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
126 drm_i810_private_t *dev_priv = dev->dev_private;
127 const struct file_operations *old_fops;
128 int retcode = 0;
129
130 if (buf_priv->currently_mapped == I810_BUF_MAPPED)
131 return -EINVAL;
132
133 /* This is all entirely broken */
134 old_fops = file_priv->filp->f_op;
135 file_priv->filp->f_op = &i810_buffer_fops;
136 dev_priv->mmap_buffer = buf;
137 buf_priv->virtual = (void *)vm_mmap(file_priv->filp, 0, buf->total,
138 PROT_READ | PROT_WRITE,
139 MAP_SHARED, buf->bus_address);
140 dev_priv->mmap_buffer = NULL;
141 file_priv->filp->f_op = old_fops;
142 if (IS_ERR(buf_priv->virtual)) {
143 /* Real error */
144 DRM_ERROR("mmap error\n");
145 retcode = PTR_ERR(buf_priv->virtual);
146 buf_priv->virtual = NULL;
147 }
148
149 return retcode;
150 }
151
152 static int i810_unmap_buffer(struct drm_buf *buf)
153 {
154 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
155 int retcode = 0;
156
157 if (buf_priv->currently_mapped != I810_BUF_MAPPED)
158 return -EINVAL;
159
160 retcode = vm_munmap((unsigned long)buf_priv->virtual,
161 (size_t) buf->total);
162
163 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
164 buf_priv->virtual = NULL;
165
166 return retcode;
167 }
168
169 static int i810_dma_get_buffer(struct drm_device *dev, drm_i810_dma_t *d,
170 struct drm_file *file_priv)
171 {
172 struct drm_buf *buf;
173 drm_i810_buf_priv_t *buf_priv;
174 int retcode = 0;
175
176 buf = i810_freelist_get(dev);
177 if (!buf) {
178 retcode = -ENOMEM;
179 DRM_DEBUG("retcode=%d\n", retcode);
180 return retcode;
181 }
182
183 retcode = i810_map_buffer(buf, file_priv);
184 if (retcode) {
185 i810_freelist_put(dev, buf);
186 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
187 return retcode;
188 }
189 buf->file_priv = file_priv;
190 buf_priv = buf->dev_private;
191 d->granted = 1;
192 d->request_idx = buf->idx;
193 d->request_size = buf->total;
194 d->virtual = buf_priv->virtual;
195
196 return retcode;
197 }
198
199 static int i810_dma_cleanup(struct drm_device *dev)
200 {
201 struct drm_device_dma *dma = dev->dma;
202
203 /* Make sure interrupts are disabled here because the uninstall ioctl
204 * may not have been called from userspace and after dev_private
205 * is freed, it's too late.
206 */
207 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
208 drm_irq_uninstall(dev);
209
210 if (dev->dev_private) {
211 int i;
212 drm_i810_private_t *dev_priv =
213 (drm_i810_private_t *) dev->dev_private;
214
215 if (dev_priv->ring.virtual_start)
216 drm_core_ioremapfree(&dev_priv->ring.map, dev);
217 if (dev_priv->hw_status_page) {
218 pci_free_consistent(dev->pdev, PAGE_SIZE,
219 dev_priv->hw_status_page,
220 dev_priv->dma_status_page);
221 }
222 kfree(dev->dev_private);
223 dev->dev_private = NULL;
224
225 for (i = 0; i < dma->buf_count; i++) {
226 struct drm_buf *buf = dma->buflist[i];
227 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
228
229 if (buf_priv->kernel_virtual && buf->total)
230 drm_core_ioremapfree(&buf_priv->map, dev);
231 }
232 }
233 return 0;
234 }
235
236 static int i810_wait_ring(struct drm_device *dev, int n)
237 {
238 drm_i810_private_t *dev_priv = dev->dev_private;
239 drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
240 int iters = 0;
241 unsigned long end;
242 unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
243
244 end = jiffies + (HZ * 3);
245 while (ring->space < n) {
246 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
247 ring->space = ring->head - (ring->tail + 8);
248 if (ring->space < 0)
249 ring->space += ring->Size;
250
251 if (ring->head != last_head) {
252 end = jiffies + (HZ * 3);
253 last_head = ring->head;
254 }
255
256 iters++;
257 if (time_before(end, jiffies)) {
258 DRM_ERROR("space: %d wanted %d\n", ring->space, n);
259 DRM_ERROR("lockup\n");
260 goto out_wait_ring;
261 }
262 udelay(1);
263 }
264
265 out_wait_ring:
266 return iters;
267 }
268
269 static void i810_kernel_lost_context(struct drm_device *dev)
270 {
271 drm_i810_private_t *dev_priv = dev->dev_private;
272 drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
273
274 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
275 ring->tail = I810_READ(LP_RING + RING_TAIL);
276 ring->space = ring->head - (ring->tail + 8);
277 if (ring->space < 0)
278 ring->space += ring->Size;
279 }
280
281 static int i810_freelist_init(struct drm_device *dev, drm_i810_private_t *dev_priv)
282 {
283 struct drm_device_dma *dma = dev->dma;
284 int my_idx = 24;
285 u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
286 int i;
287
288 if (dma->buf_count > 1019) {
289 /* Not enough space in the status page for the freelist */
290 return -EINVAL;
291 }
292
293 for (i = 0; i < dma->buf_count; i++) {
294 struct drm_buf *buf = dma->buflist[i];
295 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
296
297 buf_priv->in_use = hw_status++;
298 buf_priv->my_use_idx = my_idx;
299 my_idx += 4;
300
301 *buf_priv->in_use = I810_BUF_FREE;
302
303 buf_priv->map.offset = buf->bus_address;
304 buf_priv->map.size = buf->total;
305 buf_priv->map.type = _DRM_AGP;
306 buf_priv->map.flags = 0;
307 buf_priv->map.mtrr = 0;
308
309 drm_core_ioremap(&buf_priv->map, dev);
310 buf_priv->kernel_virtual = buf_priv->map.handle;
311
312 }
313 return 0;
314 }
315
316 static int i810_dma_initialize(struct drm_device *dev,
317 drm_i810_private_t *dev_priv,
318 drm_i810_init_t *init)
319 {
320 struct drm_map_list *r_list;
321 memset(dev_priv, 0, sizeof(drm_i810_private_t));
322
323 list_for_each_entry(r_list, &dev->maplist, head) {
324 if (r_list->map &&
325 r_list->map->type == _DRM_SHM &&
326 r_list->map->flags & _DRM_CONTAINS_LOCK) {
327 dev_priv->sarea_map = r_list->map;
328 break;
329 }
330 }
331 if (!dev_priv->sarea_map) {
332 dev->dev_private = (void *)dev_priv;
333 i810_dma_cleanup(dev);
334 DRM_ERROR("can not find sarea!\n");
335 return -EINVAL;
336 }
337 dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
338 if (!dev_priv->mmio_map) {
339 dev->dev_private = (void *)dev_priv;
340 i810_dma_cleanup(dev);
341 DRM_ERROR("can not find mmio map!\n");
342 return -EINVAL;
343 }
344 dev->agp_buffer_token = init->buffers_offset;
345 dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
346 if (!dev->agp_buffer_map) {
347 dev->dev_private = (void *)dev_priv;
348 i810_dma_cleanup(dev);
349 DRM_ERROR("can not find dma buffer map!\n");
350 return -EINVAL;
351 }
352
353 dev_priv->sarea_priv = (drm_i810_sarea_t *)
354 ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
355
356 dev_priv->ring.Start = init->ring_start;
357 dev_priv->ring.End = init->ring_end;
358 dev_priv->ring.Size = init->ring_size;
359
360 dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
361 dev_priv->ring.map.size = init->ring_size;
362 dev_priv->ring.map.type = _DRM_AGP;
363 dev_priv->ring.map.flags = 0;
364 dev_priv->ring.map.mtrr = 0;
365
366 drm_core_ioremap(&dev_priv->ring.map, dev);
367
368 if (dev_priv->ring.map.handle == NULL) {
369 dev->dev_private = (void *)dev_priv;
370 i810_dma_cleanup(dev);
371 DRM_ERROR("can not ioremap virtual address for"
372 " ring buffer\n");
373 return -ENOMEM;
374 }
375
376 dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
377
378 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
379
380 dev_priv->w = init->w;
381 dev_priv->h = init->h;
382 dev_priv->pitch = init->pitch;
383 dev_priv->back_offset = init->back_offset;
384 dev_priv->depth_offset = init->depth_offset;
385 dev_priv->front_offset = init->front_offset;
386
387 dev_priv->overlay_offset = init->overlay_offset;
388 dev_priv->overlay_physical = init->overlay_physical;
389
390 dev_priv->front_di1 = init->front_offset | init->pitch_bits;
391 dev_priv->back_di1 = init->back_offset | init->pitch_bits;
392 dev_priv->zi1 = init->depth_offset | init->pitch_bits;
393
394 /* Program Hardware Status Page */
395 dev_priv->hw_status_page =
396 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
397 &dev_priv->dma_status_page);
398 if (!dev_priv->hw_status_page) {
399 dev->dev_private = (void *)dev_priv;
400 i810_dma_cleanup(dev);
401 DRM_ERROR("Can not allocate hardware status page\n");
402 return -ENOMEM;
403 }
404 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
405 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
406
407 I810_WRITE(0x02080, dev_priv->dma_status_page);
408 DRM_DEBUG("Enabled hardware status page\n");
409
410 /* Now we need to init our freelist */
411 if (i810_freelist_init(dev, dev_priv) != 0) {
412 dev->dev_private = (void *)dev_priv;
413 i810_dma_cleanup(dev);
414 DRM_ERROR("Not enough space in the status page for"
415 " the freelist\n");
416 return -ENOMEM;
417 }
418 dev->dev_private = (void *)dev_priv;
419
420 return 0;
421 }
422
423 static int i810_dma_init(struct drm_device *dev, void *data,
424 struct drm_file *file_priv)
425 {
426 drm_i810_private_t *dev_priv;
427 drm_i810_init_t *init = data;
428 int retcode = 0;
429
430 switch (init->func) {
431 case I810_INIT_DMA_1_4:
432 DRM_INFO("Using v1.4 init.\n");
433 dev_priv = kmalloc(sizeof(drm_i810_private_t), GFP_KERNEL);
434 if (dev_priv == NULL)
435 return -ENOMEM;
436 retcode = i810_dma_initialize(dev, dev_priv, init);
437 break;
438
439 case I810_CLEANUP_DMA:
440 DRM_INFO("DMA Cleanup\n");
441 retcode = i810_dma_cleanup(dev);
442 break;
443 default:
444 return -EINVAL;
445 }
446
447 return retcode;
448 }
449
450 /* Most efficient way to verify state for the i810 is as it is
451 * emitted. Non-conformant state is silently dropped.
452 *
453 * Use 'volatile' & local var tmp to force the emitted values to be
454 * identical to the verified ones.
455 */
456 static void i810EmitContextVerified(struct drm_device *dev,
457 volatile unsigned int *code)
458 {
459 drm_i810_private_t *dev_priv = dev->dev_private;
460 int i, j = 0;
461 unsigned int tmp;
462 RING_LOCALS;
463
464 BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
465
466 OUT_RING(GFX_OP_COLOR_FACTOR);
467 OUT_RING(code[I810_CTXREG_CF1]);
468
469 OUT_RING(GFX_OP_STIPPLE);
470 OUT_RING(code[I810_CTXREG_ST1]);
471
472 for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
473 tmp = code[i];
474
475 if ((tmp & (7 << 29)) == (3 << 29) &&
476 (tmp & (0x1f << 24)) < (0x1d << 24)) {
477 OUT_RING(tmp);
478 j++;
479 } else
480 printk("constext state dropped!!!\n");
481 }
482
483 if (j & 1)
484 OUT_RING(0);
485
486 ADVANCE_LP_RING();
487 }
488
489 static void i810EmitTexVerified(struct drm_device *dev, volatile unsigned int *code)
490 {
491 drm_i810_private_t *dev_priv = dev->dev_private;
492 int i, j = 0;
493 unsigned int tmp;
494 RING_LOCALS;
495
496 BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
497
498 OUT_RING(GFX_OP_MAP_INFO);
499 OUT_RING(code[I810_TEXREG_MI1]);
500 OUT_RING(code[I810_TEXREG_MI2]);
501 OUT_RING(code[I810_TEXREG_MI3]);
502
503 for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
504 tmp = code[i];
505
506 if ((tmp & (7 << 29)) == (3 << 29) &&
507 (tmp & (0x1f << 24)) < (0x1d << 24)) {
508 OUT_RING(tmp);
509 j++;
510 } else
511 printk("texture state dropped!!!\n");
512 }
513
514 if (j & 1)
515 OUT_RING(0);
516
517 ADVANCE_LP_RING();
518 }
519
520 /* Need to do some additional checking when setting the dest buffer.
521 */
522 static void i810EmitDestVerified(struct drm_device *dev,
523 volatile unsigned int *code)
524 {
525 drm_i810_private_t *dev_priv = dev->dev_private;
526 unsigned int tmp;
527 RING_LOCALS;
528
529 BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
530
531 tmp = code[I810_DESTREG_DI1];
532 if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
533 OUT_RING(CMD_OP_DESTBUFFER_INFO);
534 OUT_RING(tmp);
535 } else
536 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
537 tmp, dev_priv->front_di1, dev_priv->back_di1);
538
539 /* invarient:
540 */
541 OUT_RING(CMD_OP_Z_BUFFER_INFO);
542 OUT_RING(dev_priv->zi1);
543
544 OUT_RING(GFX_OP_DESTBUFFER_VARS);
545 OUT_RING(code[I810_DESTREG_DV1]);
546
547 OUT_RING(GFX_OP_DRAWRECT_INFO);
548 OUT_RING(code[I810_DESTREG_DR1]);
549 OUT_RING(code[I810_DESTREG_DR2]);
550 OUT_RING(code[I810_DESTREG_DR3]);
551 OUT_RING(code[I810_DESTREG_DR4]);
552 OUT_RING(0);
553
554 ADVANCE_LP_RING();
555 }
556
557 static void i810EmitState(struct drm_device *dev)
558 {
559 drm_i810_private_t *dev_priv = dev->dev_private;
560 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
561 unsigned int dirty = sarea_priv->dirty;
562
563 DRM_DEBUG("%x\n", dirty);
564
565 if (dirty & I810_UPLOAD_BUFFERS) {
566 i810EmitDestVerified(dev, sarea_priv->BufferState);
567 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
568 }
569
570 if (dirty & I810_UPLOAD_CTX) {
571 i810EmitContextVerified(dev, sarea_priv->ContextState);
572 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
573 }
574
575 if (dirty & I810_UPLOAD_TEX0) {
576 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
577 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
578 }
579
580 if (dirty & I810_UPLOAD_TEX1) {
581 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
582 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
583 }
584 }
585
586 /* need to verify
587 */
588 static void i810_dma_dispatch_clear(struct drm_device *dev, int flags,
589 unsigned int clear_color,
590 unsigned int clear_zval)
591 {
592 drm_i810_private_t *dev_priv = dev->dev_private;
593 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
594 int nbox = sarea_priv->nbox;
595 struct drm_clip_rect *pbox = sarea_priv->boxes;
596 int pitch = dev_priv->pitch;
597 int cpp = 2;
598 int i;
599 RING_LOCALS;
600
601 if (dev_priv->current_page == 1) {
602 unsigned int tmp = flags;
603
604 flags &= ~(I810_FRONT | I810_BACK);
605 if (tmp & I810_FRONT)
606 flags |= I810_BACK;
607 if (tmp & I810_BACK)
608 flags |= I810_FRONT;
609 }
610
611 i810_kernel_lost_context(dev);
612
613 if (nbox > I810_NR_SAREA_CLIPRECTS)
614 nbox = I810_NR_SAREA_CLIPRECTS;
615
616 for (i = 0; i < nbox; i++, pbox++) {
617 unsigned int x = pbox->x1;
618 unsigned int y = pbox->y1;
619 unsigned int width = (pbox->x2 - x) * cpp;
620 unsigned int height = pbox->y2 - y;
621 unsigned int start = y * pitch + x * cpp;
622
623 if (pbox->x1 > pbox->x2 ||
624 pbox->y1 > pbox->y2 ||
625 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
626 continue;
627
628 if (flags & I810_FRONT) {
629 BEGIN_LP_RING(6);
630 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
631 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
632 OUT_RING((height << 16) | width);
633 OUT_RING(start);
634 OUT_RING(clear_color);
635 OUT_RING(0);
636 ADVANCE_LP_RING();
637 }
638
639 if (flags & I810_BACK) {
640 BEGIN_LP_RING(6);
641 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
642 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
643 OUT_RING((height << 16) | width);
644 OUT_RING(dev_priv->back_offset + start);
645 OUT_RING(clear_color);
646 OUT_RING(0);
647 ADVANCE_LP_RING();
648 }
649
650 if (flags & I810_DEPTH) {
651 BEGIN_LP_RING(6);
652 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
653 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
654 OUT_RING((height << 16) | width);
655 OUT_RING(dev_priv->depth_offset + start);
656 OUT_RING(clear_zval);
657 OUT_RING(0);
658 ADVANCE_LP_RING();
659 }
660 }
661 }
662
663 static void i810_dma_dispatch_swap(struct drm_device *dev)
664 {
665 drm_i810_private_t *dev_priv = dev->dev_private;
666 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
667 int nbox = sarea_priv->nbox;
668 struct drm_clip_rect *pbox = sarea_priv->boxes;
669 int pitch = dev_priv->pitch;
670 int cpp = 2;
671 int i;
672 RING_LOCALS;
673
674 DRM_DEBUG("swapbuffers\n");
675
676 i810_kernel_lost_context(dev);
677
678 if (nbox > I810_NR_SAREA_CLIPRECTS)
679 nbox = I810_NR_SAREA_CLIPRECTS;
680
681 for (i = 0; i < nbox; i++, pbox++) {
682 unsigned int w = pbox->x2 - pbox->x1;
683 unsigned int h = pbox->y2 - pbox->y1;
684 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
685 unsigned int start = dst;
686
687 if (pbox->x1 > pbox->x2 ||
688 pbox->y1 > pbox->y2 ||
689 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
690 continue;
691
692 BEGIN_LP_RING(6);
693 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
694 OUT_RING(pitch | (0xCC << 16));
695 OUT_RING((h << 16) | (w * cpp));
696 if (dev_priv->current_page == 0)
697 OUT_RING(dev_priv->front_offset + start);
698 else
699 OUT_RING(dev_priv->back_offset + start);
700 OUT_RING(pitch);
701 if (dev_priv->current_page == 0)
702 OUT_RING(dev_priv->back_offset + start);
703 else
704 OUT_RING(dev_priv->front_offset + start);
705 ADVANCE_LP_RING();
706 }
707 }
708
709 static void i810_dma_dispatch_vertex(struct drm_device *dev,
710 struct drm_buf *buf, int discard, int used)
711 {
712 drm_i810_private_t *dev_priv = dev->dev_private;
713 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
714 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
715 struct drm_clip_rect *box = sarea_priv->boxes;
716 int nbox = sarea_priv->nbox;
717 unsigned long address = (unsigned long)buf->bus_address;
718 unsigned long start = address - dev->agp->base;
719 int i = 0;
720 RING_LOCALS;
721
722 i810_kernel_lost_context(dev);
723
724 if (nbox > I810_NR_SAREA_CLIPRECTS)
725 nbox = I810_NR_SAREA_CLIPRECTS;
726
727 if (used > 4 * 1024)
728 used = 0;
729
730 if (sarea_priv->dirty)
731 i810EmitState(dev);
732
733 if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
734 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
735
736 *(u32 *) buf_priv->kernel_virtual =
737 ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
738
739 if (used & 4) {
740 *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
741 used += 4;
742 }
743
744 i810_unmap_buffer(buf);
745 }
746
747 if (used) {
748 do {
749 if (i < nbox) {
750 BEGIN_LP_RING(4);
751 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
752 SC_ENABLE);
753 OUT_RING(GFX_OP_SCISSOR_INFO);
754 OUT_RING(box[i].x1 | (box[i].y1 << 16));
755 OUT_RING((box[i].x2 -
756 1) | ((box[i].y2 - 1) << 16));
757 ADVANCE_LP_RING();
758 }
759
760 BEGIN_LP_RING(4);
761 OUT_RING(CMD_OP_BATCH_BUFFER);
762 OUT_RING(start | BB1_PROTECTED);
763 OUT_RING(start + used - 4);
764 OUT_RING(0);
765 ADVANCE_LP_RING();
766
767 } while (++i < nbox);
768 }
769
770 if (discard) {
771 dev_priv->counter++;
772
773 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
774 I810_BUF_HARDWARE);
775
776 BEGIN_LP_RING(8);
777 OUT_RING(CMD_STORE_DWORD_IDX);
778 OUT_RING(20);
779 OUT_RING(dev_priv->counter);
780 OUT_RING(CMD_STORE_DWORD_IDX);
781 OUT_RING(buf_priv->my_use_idx);
782 OUT_RING(I810_BUF_FREE);
783 OUT_RING(CMD_REPORT_HEAD);
784 OUT_RING(0);
785 ADVANCE_LP_RING();
786 }
787 }
788
789 static void i810_dma_dispatch_flip(struct drm_device *dev)
790 {
791 drm_i810_private_t *dev_priv = dev->dev_private;
792 int pitch = dev_priv->pitch;
793 RING_LOCALS;
794
795 DRM_DEBUG("page=%d pfCurrentPage=%d\n",
796 dev_priv->current_page,
797 dev_priv->sarea_priv->pf_current_page);
798
799 i810_kernel_lost_context(dev);
800
801 BEGIN_LP_RING(2);
802 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
803 OUT_RING(0);
804 ADVANCE_LP_RING();
805
806 BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
807 /* On i815 at least ASYNC is buggy */
808 /* pitch<<5 is from 11.2.8 p158,
809 its the pitch / 8 then left shifted 8,
810 so (pitch >> 3) << 8 */
811 OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
812 if (dev_priv->current_page == 0) {
813 OUT_RING(dev_priv->back_offset);
814 dev_priv->current_page = 1;
815 } else {
816 OUT_RING(dev_priv->front_offset);
817 dev_priv->current_page = 0;
818 }
819 OUT_RING(0);
820 ADVANCE_LP_RING();
821
822 BEGIN_LP_RING(2);
823 OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
824 OUT_RING(0);
825 ADVANCE_LP_RING();
826
827 /* Increment the frame counter. The client-side 3D driver must
828 * throttle the framerate by waiting for this value before
829 * performing the swapbuffer ioctl.
830 */
831 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
832
833 }
834
835 static void i810_dma_quiescent(struct drm_device *dev)
836 {
837 drm_i810_private_t *dev_priv = dev->dev_private;
838 RING_LOCALS;
839
840 i810_kernel_lost_context(dev);
841
842 BEGIN_LP_RING(4);
843 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
844 OUT_RING(CMD_REPORT_HEAD);
845 OUT_RING(0);
846 OUT_RING(0);
847 ADVANCE_LP_RING();
848
849 i810_wait_ring(dev, dev_priv->ring.Size - 8);
850 }
851
852 static int i810_flush_queue(struct drm_device *dev)
853 {
854 drm_i810_private_t *dev_priv = dev->dev_private;
855 struct drm_device_dma *dma = dev->dma;
856 int i, ret = 0;
857 RING_LOCALS;
858
859 i810_kernel_lost_context(dev);
860
861 BEGIN_LP_RING(2);
862 OUT_RING(CMD_REPORT_HEAD);
863 OUT_RING(0);
864 ADVANCE_LP_RING();
865
866 i810_wait_ring(dev, dev_priv->ring.Size - 8);
867
868 for (i = 0; i < dma->buf_count; i++) {
869 struct drm_buf *buf = dma->buflist[i];
870 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
871
872 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
873 I810_BUF_FREE);
874
875 if (used == I810_BUF_HARDWARE)
876 DRM_DEBUG("reclaimed from HARDWARE\n");
877 if (used == I810_BUF_CLIENT)
878 DRM_DEBUG("still on client\n");
879 }
880
881 return ret;
882 }
883
884 /* Must be called with the lock held */
885 void i810_driver_reclaim_buffers(struct drm_device *dev,
886 struct drm_file *file_priv)
887 {
888 struct drm_device_dma *dma = dev->dma;
889 int i;
890
891 if (!dma)
892 return;
893 if (!dev->dev_private)
894 return;
895 if (!dma->buflist)
896 return;
897
898 i810_flush_queue(dev);
899
900 for (i = 0; i < dma->buf_count; i++) {
901 struct drm_buf *buf = dma->buflist[i];
902 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
903
904 if (buf->file_priv == file_priv && buf_priv) {
905 int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
906 I810_BUF_FREE);
907
908 if (used == I810_BUF_CLIENT)
909 DRM_DEBUG("reclaimed from client\n");
910 if (buf_priv->currently_mapped == I810_BUF_MAPPED)
911 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
912 }
913 }
914 }
915
916 static int i810_flush_ioctl(struct drm_device *dev, void *data,
917 struct drm_file *file_priv)
918 {
919 LOCK_TEST_WITH_RETURN(dev, file_priv);
920
921 i810_flush_queue(dev);
922 return 0;
923 }
924
925 static int i810_dma_vertex(struct drm_device *dev, void *data,
926 struct drm_file *file_priv)
927 {
928 struct drm_device_dma *dma = dev->dma;
929 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
930 u32 *hw_status = dev_priv->hw_status_page;
931 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
932 dev_priv->sarea_priv;
933 drm_i810_vertex_t *vertex = data;
934
935 LOCK_TEST_WITH_RETURN(dev, file_priv);
936
937 DRM_DEBUG("idx %d used %d discard %d\n",
938 vertex->idx, vertex->used, vertex->discard);
939
940 if (vertex->idx < 0 || vertex->idx > dma->buf_count)
941 return -EINVAL;
942
943 i810_dma_dispatch_vertex(dev,
944 dma->buflist[vertex->idx],
945 vertex->discard, vertex->used);
946
947 sarea_priv->last_enqueue = dev_priv->counter - 1;
948 sarea_priv->last_dispatch = (int)hw_status[5];
949
950 return 0;
951 }
952
953 static int i810_clear_bufs(struct drm_device *dev, void *data,
954 struct drm_file *file_priv)
955 {
956 drm_i810_clear_t *clear = data;
957
958 LOCK_TEST_WITH_RETURN(dev, file_priv);
959
960 /* GH: Someone's doing nasty things... */
961 if (!dev->dev_private)
962 return -EINVAL;
963
964 i810_dma_dispatch_clear(dev, clear->flags,
965 clear->clear_color, clear->clear_depth);
966 return 0;
967 }
968
969 static int i810_swap_bufs(struct drm_device *dev, void *data,
970 struct drm_file *file_priv)
971 {
972 DRM_DEBUG("\n");
973
974 LOCK_TEST_WITH_RETURN(dev, file_priv);
975
976 i810_dma_dispatch_swap(dev);
977 return 0;
978 }
979
980 static int i810_getage(struct drm_device *dev, void *data,
981 struct drm_file *file_priv)
982 {
983 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
984 u32 *hw_status = dev_priv->hw_status_page;
985 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
986 dev_priv->sarea_priv;
987
988 sarea_priv->last_dispatch = (int)hw_status[5];
989 return 0;
990 }
991
992 static int i810_getbuf(struct drm_device *dev, void *data,
993 struct drm_file *file_priv)
994 {
995 int retcode = 0;
996 drm_i810_dma_t *d = data;
997 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
998 u32 *hw_status = dev_priv->hw_status_page;
999 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1000 dev_priv->sarea_priv;
1001
1002 LOCK_TEST_WITH_RETURN(dev, file_priv);
1003
1004 d->granted = 0;
1005
1006 retcode = i810_dma_get_buffer(dev, d, file_priv);
1007
1008 DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1009 task_pid_nr(current), retcode, d->granted);
1010
1011 sarea_priv->last_dispatch = (int)hw_status[5];
1012
1013 return retcode;
1014 }
1015
1016 static int i810_copybuf(struct drm_device *dev, void *data,
1017 struct drm_file *file_priv)
1018 {
1019 /* Never copy - 2.4.x doesn't need it */
1020 return 0;
1021 }
1022
1023 static int i810_docopy(struct drm_device *dev, void *data,
1024 struct drm_file *file_priv)
1025 {
1026 /* Never copy - 2.4.x doesn't need it */
1027 return 0;
1028 }
1029
1030 static void i810_dma_dispatch_mc(struct drm_device *dev, struct drm_buf *buf, int used,
1031 unsigned int last_render)
1032 {
1033 drm_i810_private_t *dev_priv = dev->dev_private;
1034 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1035 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1036 unsigned long address = (unsigned long)buf->bus_address;
1037 unsigned long start = address - dev->agp->base;
1038 int u;
1039 RING_LOCALS;
1040
1041 i810_kernel_lost_context(dev);
1042
1043 u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1044 if (u != I810_BUF_CLIENT)
1045 DRM_DEBUG("MC found buffer that isn't mine!\n");
1046
1047 if (used > 4 * 1024)
1048 used = 0;
1049
1050 sarea_priv->dirty = 0x7f;
1051
1052 DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1053
1054 dev_priv->counter++;
1055 DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1056 DRM_DEBUG("start : %lx\n", start);
1057 DRM_DEBUG("used : %d\n", used);
1058 DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1059
1060 if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1061 if (used & 4) {
1062 *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1063 used += 4;
1064 }
1065
1066 i810_unmap_buffer(buf);
1067 }
1068 BEGIN_LP_RING(4);
1069 OUT_RING(CMD_OP_BATCH_BUFFER);
1070 OUT_RING(start | BB1_PROTECTED);
1071 OUT_RING(start + used - 4);
1072 OUT_RING(0);
1073 ADVANCE_LP_RING();
1074
1075 BEGIN_LP_RING(8);
1076 OUT_RING(CMD_STORE_DWORD_IDX);
1077 OUT_RING(buf_priv->my_use_idx);
1078 OUT_RING(I810_BUF_FREE);
1079 OUT_RING(0);
1080
1081 OUT_RING(CMD_STORE_DWORD_IDX);
1082 OUT_RING(16);
1083 OUT_RING(last_render);
1084 OUT_RING(0);
1085 ADVANCE_LP_RING();
1086 }
1087
1088 static int i810_dma_mc(struct drm_device *dev, void *data,
1089 struct drm_file *file_priv)
1090 {
1091 struct drm_device_dma *dma = dev->dma;
1092 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1093 u32 *hw_status = dev_priv->hw_status_page;
1094 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1095 dev_priv->sarea_priv;
1096 drm_i810_mc_t *mc = data;
1097
1098 LOCK_TEST_WITH_RETURN(dev, file_priv);
1099
1100 if (mc->idx >= dma->buf_count || mc->idx < 0)
1101 return -EINVAL;
1102
1103 i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1104 mc->last_render);
1105
1106 sarea_priv->last_enqueue = dev_priv->counter - 1;
1107 sarea_priv->last_dispatch = (int)hw_status[5];
1108
1109 return 0;
1110 }
1111
1112 static int i810_rstatus(struct drm_device *dev, void *data,
1113 struct drm_file *file_priv)
1114 {
1115 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1116
1117 return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1118 }
1119
1120 static int i810_ov0_info(struct drm_device *dev, void *data,
1121 struct drm_file *file_priv)
1122 {
1123 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1124 drm_i810_overlay_t *ov = data;
1125
1126 ov->offset = dev_priv->overlay_offset;
1127 ov->physical = dev_priv->overlay_physical;
1128
1129 return 0;
1130 }
1131
1132 static int i810_fstatus(struct drm_device *dev, void *data,
1133 struct drm_file *file_priv)
1134 {
1135 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1136
1137 LOCK_TEST_WITH_RETURN(dev, file_priv);
1138 return I810_READ(0x30008);
1139 }
1140
1141 static int i810_ov0_flip(struct drm_device *dev, void *data,
1142 struct drm_file *file_priv)
1143 {
1144 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1145
1146 LOCK_TEST_WITH_RETURN(dev, file_priv);
1147
1148 /* Tell the overlay to update */
1149 I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1150
1151 return 0;
1152 }
1153
1154 /* Not sure why this isn't set all the time:
1155 */
1156 static void i810_do_init_pageflip(struct drm_device *dev)
1157 {
1158 drm_i810_private_t *dev_priv = dev->dev_private;
1159
1160 DRM_DEBUG("\n");
1161 dev_priv->page_flipping = 1;
1162 dev_priv->current_page = 0;
1163 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1164 }
1165
1166 static int i810_do_cleanup_pageflip(struct drm_device *dev)
1167 {
1168 drm_i810_private_t *dev_priv = dev->dev_private;
1169
1170 DRM_DEBUG("\n");
1171 if (dev_priv->current_page != 0)
1172 i810_dma_dispatch_flip(dev);
1173
1174 dev_priv->page_flipping = 0;
1175 return 0;
1176 }
1177
1178 static int i810_flip_bufs(struct drm_device *dev, void *data,
1179 struct drm_file *file_priv)
1180 {
1181 drm_i810_private_t *dev_priv = dev->dev_private;
1182
1183 DRM_DEBUG("\n");
1184
1185 LOCK_TEST_WITH_RETURN(dev, file_priv);
1186
1187 if (!dev_priv->page_flipping)
1188 i810_do_init_pageflip(dev);
1189
1190 i810_dma_dispatch_flip(dev);
1191 return 0;
1192 }
1193
1194 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1195 {
1196 /* Our userspace depends upon the agp mapping support. */
1197 if (!dev->agp)
1198 return -EINVAL;
1199
1200 pci_set_master(dev->pdev);
1201
1202 return 0;
1203 }
1204
1205 void i810_driver_lastclose(struct drm_device *dev)
1206 {
1207 i810_dma_cleanup(dev);
1208 }
1209
1210 void i810_driver_preclose(struct drm_device *dev, struct drm_file *file_priv)
1211 {
1212 if (dev->dev_private) {
1213 drm_i810_private_t *dev_priv = dev->dev_private;
1214 if (dev_priv->page_flipping)
1215 i810_do_cleanup_pageflip(dev);
1216 }
1217
1218 if (file_priv->master && file_priv->master->lock.hw_lock) {
1219 drm_idlelock_take(&file_priv->master->lock);
1220 i810_driver_reclaim_buffers(dev, file_priv);
1221 drm_idlelock_release(&file_priv->master->lock);
1222 } else {
1223 /* master disappeared, clean up stuff anyway and hope nothing
1224 * goes wrong */
1225 i810_driver_reclaim_buffers(dev, file_priv);
1226 }
1227
1228 }
1229
1230 int i810_driver_dma_quiescent(struct drm_device *dev)
1231 {
1232 i810_dma_quiescent(dev);
1233 return 0;
1234 }
1235
1236 const struct drm_ioctl_desc i810_ioctls[] = {
1237 DRM_IOCTL_DEF_DRV(I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1238 DRM_IOCTL_DEF_DRV(I810_VERTEX, i810_dma_vertex, DRM_AUTH|DRM_UNLOCKED),
1239 DRM_IOCTL_DEF_DRV(I810_CLEAR, i810_clear_bufs, DRM_AUTH|DRM_UNLOCKED),
1240 DRM_IOCTL_DEF_DRV(I810_FLUSH, i810_flush_ioctl, DRM_AUTH|DRM_UNLOCKED),
1241 DRM_IOCTL_DEF_DRV(I810_GETAGE, i810_getage, DRM_AUTH|DRM_UNLOCKED),
1242 DRM_IOCTL_DEF_DRV(I810_GETBUF, i810_getbuf, DRM_AUTH|DRM_UNLOCKED),
1243 DRM_IOCTL_DEF_DRV(I810_SWAP, i810_swap_bufs, DRM_AUTH|DRM_UNLOCKED),
1244 DRM_IOCTL_DEF_DRV(I810_COPY, i810_copybuf, DRM_AUTH|DRM_UNLOCKED),
1245 DRM_IOCTL_DEF_DRV(I810_DOCOPY, i810_docopy, DRM_AUTH|DRM_UNLOCKED),
1246 DRM_IOCTL_DEF_DRV(I810_OV0INFO, i810_ov0_info, DRM_AUTH|DRM_UNLOCKED),
1247 DRM_IOCTL_DEF_DRV(I810_FSTATUS, i810_fstatus, DRM_AUTH|DRM_UNLOCKED),
1248 DRM_IOCTL_DEF_DRV(I810_OV0FLIP, i810_ov0_flip, DRM_AUTH|DRM_UNLOCKED),
1249 DRM_IOCTL_DEF_DRV(I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1250 DRM_IOCTL_DEF_DRV(I810_RSTATUS, i810_rstatus, DRM_AUTH|DRM_UNLOCKED),
1251 DRM_IOCTL_DEF_DRV(I810_FLIP, i810_flip_bufs, DRM_AUTH|DRM_UNLOCKED),
1252 };
1253
1254 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1255
1256 /**
1257 * Determine if the device really is AGP or not.
1258 *
1259 * All Intel graphics chipsets are treated as AGP, even if they are really
1260 * PCI-e.
1261 *
1262 * \param dev The device to be tested.
1263 *
1264 * \returns
1265 * A value of 1 is always retured to indictate every i810 is AGP.
1266 */
1267 int i810_driver_device_is_agp(struct drm_device *dev)
1268 {
1269 return 1;
1270 }
Linux with added FPC-III support