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Linux 4.2.1
[linux/fpc-iii.git] / drivers / gpu / drm / i810 / i810_dma.c
blobd91856779bebca20a04f198da3ce486c907927e4
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_legacy_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_legacy_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_legacy_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_legacy_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_legacy_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_legacy_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_zalloc_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 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
405
406 I810_WRITE(0x02080, dev_priv->dma_status_page);
407 DRM_DEBUG("Enabled hardware status page\n");
408
409 /* Now we need to init our freelist */
410 if (i810_freelist_init(dev, dev_priv) != 0) {
411 dev->dev_private = (void *)dev_priv;
412 i810_dma_cleanup(dev);
413 DRM_ERROR("Not enough space in the status page for"
414 " the freelist\n");
415 return -ENOMEM;
416 }
417 dev->dev_private = (void *)dev_priv;
418
419 return 0;
420 }
421
422 static int i810_dma_init(struct drm_device *dev, void *data,
423 struct drm_file *file_priv)
424 {
425 drm_i810_private_t *dev_priv;
426 drm_i810_init_t *init = data;
427 int retcode = 0;
428
429 switch (init->func) {
430 case I810_INIT_DMA_1_4:
431 DRM_INFO("Using v1.4 init.\n");
432 dev_priv = kmalloc(sizeof(drm_i810_private_t), GFP_KERNEL);
433 if (dev_priv == NULL)
434 return -ENOMEM;
435 retcode = i810_dma_initialize(dev, dev_priv, init);
436 break;
437
438 case I810_CLEANUP_DMA:
439 DRM_INFO("DMA Cleanup\n");
440 retcode = i810_dma_cleanup(dev);
441 break;
442 default:
443 return -EINVAL;
444 }
445
446 return retcode;
447 }
448
449 /* Most efficient way to verify state for the i810 is as it is
450 * emitted. Non-conformant state is silently dropped.
451 *
452 * Use 'volatile' & local var tmp to force the emitted values to be
453 * identical to the verified ones.
454 */
455 static void i810EmitContextVerified(struct drm_device *dev,
456 volatile unsigned int *code)
457 {
458 drm_i810_private_t *dev_priv = dev->dev_private;
459 int i, j = 0;
460 unsigned int tmp;
461 RING_LOCALS;
462
463 BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
464
465 OUT_RING(GFX_OP_COLOR_FACTOR);
466 OUT_RING(code[I810_CTXREG_CF1]);
467
468 OUT_RING(GFX_OP_STIPPLE);
469 OUT_RING(code[I810_CTXREG_ST1]);
470
471 for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
472 tmp = code[i];
473
474 if ((tmp & (7 << 29)) == (3 << 29) &&
475 (tmp & (0x1f << 24)) < (0x1d << 24)) {
476 OUT_RING(tmp);
477 j++;
478 } else
479 printk("constext state dropped!!!\n");
480 }
481
482 if (j & 1)
483 OUT_RING(0);
484
485 ADVANCE_LP_RING();
486 }
487
488 static void i810EmitTexVerified(struct drm_device *dev, volatile unsigned int *code)
489 {
490 drm_i810_private_t *dev_priv = dev->dev_private;
491 int i, j = 0;
492 unsigned int tmp;
493 RING_LOCALS;
494
495 BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
496
497 OUT_RING(GFX_OP_MAP_INFO);
498 OUT_RING(code[I810_TEXREG_MI1]);
499 OUT_RING(code[I810_TEXREG_MI2]);
500 OUT_RING(code[I810_TEXREG_MI3]);
501
502 for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
503 tmp = code[i];
504
505 if ((tmp & (7 << 29)) == (3 << 29) &&
506 (tmp & (0x1f << 24)) < (0x1d << 24)) {
507 OUT_RING(tmp);
508 j++;
509 } else
510 printk("texture state dropped!!!\n");
511 }
512
513 if (j & 1)
514 OUT_RING(0);
515
516 ADVANCE_LP_RING();
517 }
518
519 /* Need to do some additional checking when setting the dest buffer.
520 */
521 static void i810EmitDestVerified(struct drm_device *dev,
522 volatile unsigned int *code)
523 {
524 drm_i810_private_t *dev_priv = dev->dev_private;
525 unsigned int tmp;
526 RING_LOCALS;
527
528 BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
529
530 tmp = code[I810_DESTREG_DI1];
531 if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
532 OUT_RING(CMD_OP_DESTBUFFER_INFO);
533 OUT_RING(tmp);
534 } else
535 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
536 tmp, dev_priv->front_di1, dev_priv->back_di1);
537
538 /* invarient:
539 */
540 OUT_RING(CMD_OP_Z_BUFFER_INFO);
541 OUT_RING(dev_priv->zi1);
542
543 OUT_RING(GFX_OP_DESTBUFFER_VARS);
544 OUT_RING(code[I810_DESTREG_DV1]);
545
546 OUT_RING(GFX_OP_DRAWRECT_INFO);
547 OUT_RING(code[I810_DESTREG_DR1]);
548 OUT_RING(code[I810_DESTREG_DR2]);
549 OUT_RING(code[I810_DESTREG_DR3]);
550 OUT_RING(code[I810_DESTREG_DR4]);
551 OUT_RING(0);
552
553 ADVANCE_LP_RING();
554 }
555
556 static void i810EmitState(struct drm_device *dev)
557 {
558 drm_i810_private_t *dev_priv = dev->dev_private;
559 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
560 unsigned int dirty = sarea_priv->dirty;
561
562 DRM_DEBUG("%x\n", dirty);
563
564 if (dirty & I810_UPLOAD_BUFFERS) {
565 i810EmitDestVerified(dev, sarea_priv->BufferState);
566 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
567 }
568
569 if (dirty & I810_UPLOAD_CTX) {
570 i810EmitContextVerified(dev, sarea_priv->ContextState);
571 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
572 }
573
574 if (dirty & I810_UPLOAD_TEX0) {
575 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
576 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
577 }
578
579 if (dirty & I810_UPLOAD_TEX1) {
580 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
581 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
582 }
583 }
584
585 /* need to verify
586 */
587 static void i810_dma_dispatch_clear(struct drm_device *dev, int flags,
588 unsigned int clear_color,
589 unsigned int clear_zval)
590 {
591 drm_i810_private_t *dev_priv = dev->dev_private;
592 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
593 int nbox = sarea_priv->nbox;
594 struct drm_clip_rect *pbox = sarea_priv->boxes;
595 int pitch = dev_priv->pitch;
596 int cpp = 2;
597 int i;
598 RING_LOCALS;
599
600 if (dev_priv->current_page == 1) {
601 unsigned int tmp = flags;
602
603 flags &= ~(I810_FRONT | I810_BACK);
604 if (tmp & I810_FRONT)
605 flags |= I810_BACK;
606 if (tmp & I810_BACK)
607 flags |= I810_FRONT;
608 }
609
610 i810_kernel_lost_context(dev);
611
612 if (nbox > I810_NR_SAREA_CLIPRECTS)
613 nbox = I810_NR_SAREA_CLIPRECTS;
614
615 for (i = 0; i < nbox; i++, pbox++) {
616 unsigned int x = pbox->x1;
617 unsigned int y = pbox->y1;
618 unsigned int width = (pbox->x2 - x) * cpp;
619 unsigned int height = pbox->y2 - y;
620 unsigned int start = y * pitch + x * cpp;
621
622 if (pbox->x1 > pbox->x2 ||
623 pbox->y1 > pbox->y2 ||
624 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
625 continue;
626
627 if (flags & I810_FRONT) {
628 BEGIN_LP_RING(6);
629 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
630 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
631 OUT_RING((height << 16) | width);
632 OUT_RING(start);
633 OUT_RING(clear_color);
634 OUT_RING(0);
635 ADVANCE_LP_RING();
636 }
637
638 if (flags & I810_BACK) {
639 BEGIN_LP_RING(6);
640 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
641 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
642 OUT_RING((height << 16) | width);
643 OUT_RING(dev_priv->back_offset + start);
644 OUT_RING(clear_color);
645 OUT_RING(0);
646 ADVANCE_LP_RING();
647 }
648
649 if (flags & I810_DEPTH) {
650 BEGIN_LP_RING(6);
651 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
652 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
653 OUT_RING((height << 16) | width);
654 OUT_RING(dev_priv->depth_offset + start);
655 OUT_RING(clear_zval);
656 OUT_RING(0);
657 ADVANCE_LP_RING();
658 }
659 }
660 }
661
662 static void i810_dma_dispatch_swap(struct drm_device *dev)
663 {
664 drm_i810_private_t *dev_priv = dev->dev_private;
665 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
666 int nbox = sarea_priv->nbox;
667 struct drm_clip_rect *pbox = sarea_priv->boxes;
668 int pitch = dev_priv->pitch;
669 int cpp = 2;
670 int i;
671 RING_LOCALS;
672
673 DRM_DEBUG("swapbuffers\n");
674
675 i810_kernel_lost_context(dev);
676
677 if (nbox > I810_NR_SAREA_CLIPRECTS)
678 nbox = I810_NR_SAREA_CLIPRECTS;
679
680 for (i = 0; i < nbox; i++, pbox++) {
681 unsigned int w = pbox->x2 - pbox->x1;
682 unsigned int h = pbox->y2 - pbox->y1;
683 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
684 unsigned int start = dst;
685
686 if (pbox->x1 > pbox->x2 ||
687 pbox->y1 > pbox->y2 ||
688 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
689 continue;
690
691 BEGIN_LP_RING(6);
692 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
693 OUT_RING(pitch | (0xCC << 16));
694 OUT_RING((h << 16) | (w * cpp));
695 if (dev_priv->current_page == 0)
696 OUT_RING(dev_priv->front_offset + start);
697 else
698 OUT_RING(dev_priv->back_offset + start);
699 OUT_RING(pitch);
700 if (dev_priv->current_page == 0)
701 OUT_RING(dev_priv->back_offset + start);
702 else
703 OUT_RING(dev_priv->front_offset + start);
704 ADVANCE_LP_RING();
705 }
706 }
707
708 static void i810_dma_dispatch_vertex(struct drm_device *dev,
709 struct drm_buf *buf, int discard, int used)
710 {
711 drm_i810_private_t *dev_priv = dev->dev_private;
712 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
713 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
714 struct drm_clip_rect *box = sarea_priv->boxes;
715 int nbox = sarea_priv->nbox;
716 unsigned long address = (unsigned long)buf->bus_address;
717 unsigned long start = address - dev->agp->base;
718 int i = 0;
719 RING_LOCALS;
720
721 i810_kernel_lost_context(dev);
722
723 if (nbox > I810_NR_SAREA_CLIPRECTS)
724 nbox = I810_NR_SAREA_CLIPRECTS;
725
726 if (used > 4 * 1024)
727 used = 0;
728
729 if (sarea_priv->dirty)
730 i810EmitState(dev);
731
732 if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
733 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
734
735 *(u32 *) buf_priv->kernel_virtual =
736 ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
737
738 if (used & 4) {
739 *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
740 used += 4;
741 }
742
743 i810_unmap_buffer(buf);
744 }
745
746 if (used) {
747 do {
748 if (i < nbox) {
749 BEGIN_LP_RING(4);
750 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
751 SC_ENABLE);
752 OUT_RING(GFX_OP_SCISSOR_INFO);
753 OUT_RING(box[i].x1 | (box[i].y1 << 16));
754 OUT_RING((box[i].x2 -
755 1) | ((box[i].y2 - 1) << 16));
756 ADVANCE_LP_RING();
757 }
758
759 BEGIN_LP_RING(4);
760 OUT_RING(CMD_OP_BATCH_BUFFER);
761 OUT_RING(start | BB1_PROTECTED);
762 OUT_RING(start + used - 4);
763 OUT_RING(0);
764 ADVANCE_LP_RING();
765
766 } while (++i < nbox);
767 }
768
769 if (discard) {
770 dev_priv->counter++;
771
772 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
773 I810_BUF_HARDWARE);
774
775 BEGIN_LP_RING(8);
776 OUT_RING(CMD_STORE_DWORD_IDX);
777 OUT_RING(20);
778 OUT_RING(dev_priv->counter);
779 OUT_RING(CMD_STORE_DWORD_IDX);
780 OUT_RING(buf_priv->my_use_idx);
781 OUT_RING(I810_BUF_FREE);
782 OUT_RING(CMD_REPORT_HEAD);
783 OUT_RING(0);
784 ADVANCE_LP_RING();
785 }
786 }
787
788 static void i810_dma_dispatch_flip(struct drm_device *dev)
789 {
790 drm_i810_private_t *dev_priv = dev->dev_private;
791 int pitch = dev_priv->pitch;
792 RING_LOCALS;
793
794 DRM_DEBUG("page=%d pfCurrentPage=%d\n",
795 dev_priv->current_page,
796 dev_priv->sarea_priv->pf_current_page);
797
798 i810_kernel_lost_context(dev);
799
800 BEGIN_LP_RING(2);
801 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
802 OUT_RING(0);
803 ADVANCE_LP_RING();
804
805 BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
806 /* On i815 at least ASYNC is buggy */
807 /* pitch<<5 is from 11.2.8 p158,
808 its the pitch / 8 then left shifted 8,
809 so (pitch >> 3) << 8 */
810 OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
811 if (dev_priv->current_page == 0) {
812 OUT_RING(dev_priv->back_offset);
813 dev_priv->current_page = 1;
814 } else {
815 OUT_RING(dev_priv->front_offset);
816 dev_priv->current_page = 0;
817 }
818 OUT_RING(0);
819 ADVANCE_LP_RING();
820
821 BEGIN_LP_RING(2);
822 OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
823 OUT_RING(0);
824 ADVANCE_LP_RING();
825
826 /* Increment the frame counter. The client-side 3D driver must
827 * throttle the framerate by waiting for this value before
828 * performing the swapbuffer ioctl.
829 */
830 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
831
832 }
833
834 static void i810_dma_quiescent(struct drm_device *dev)
835 {
836 drm_i810_private_t *dev_priv = dev->dev_private;
837 RING_LOCALS;
838
839 i810_kernel_lost_context(dev);
840
841 BEGIN_LP_RING(4);
842 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
843 OUT_RING(CMD_REPORT_HEAD);
844 OUT_RING(0);
845 OUT_RING(0);
846 ADVANCE_LP_RING();
847
848 i810_wait_ring(dev, dev_priv->ring.Size - 8);
849 }
850
851 static int i810_flush_queue(struct drm_device *dev)
852 {
853 drm_i810_private_t *dev_priv = dev->dev_private;
854 struct drm_device_dma *dma = dev->dma;
855 int i, ret = 0;
856 RING_LOCALS;
857
858 i810_kernel_lost_context(dev);
859
860 BEGIN_LP_RING(2);
861 OUT_RING(CMD_REPORT_HEAD);
862 OUT_RING(0);
863 ADVANCE_LP_RING();
864
865 i810_wait_ring(dev, dev_priv->ring.Size - 8);
866
867 for (i = 0; i < dma->buf_count; i++) {
868 struct drm_buf *buf = dma->buflist[i];
869 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
870
871 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
872 I810_BUF_FREE);
873
874 if (used == I810_BUF_HARDWARE)
875 DRM_DEBUG("reclaimed from HARDWARE\n");
876 if (used == I810_BUF_CLIENT)
877 DRM_DEBUG("still on client\n");
878 }
879
880 return ret;
881 }
882
883 /* Must be called with the lock held */
884 void i810_driver_reclaim_buffers(struct drm_device *dev,
885 struct drm_file *file_priv)
886 {
887 struct drm_device_dma *dma = dev->dma;
888 int i;
889
890 if (!dma)
891 return;
892 if (!dev->dev_private)
893 return;
894 if (!dma->buflist)
895 return;
896
897 i810_flush_queue(dev);
898
899 for (i = 0; i < dma->buf_count; i++) {
900 struct drm_buf *buf = dma->buflist[i];
901 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
902
903 if (buf->file_priv == file_priv && buf_priv) {
904 int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
905 I810_BUF_FREE);
906
907 if (used == I810_BUF_CLIENT)
908 DRM_DEBUG("reclaimed from client\n");
909 if (buf_priv->currently_mapped == I810_BUF_MAPPED)
910 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
911 }
912 }
913 }
914
915 static int i810_flush_ioctl(struct drm_device *dev, void *data,
916 struct drm_file *file_priv)
917 {
918 LOCK_TEST_WITH_RETURN(dev, file_priv);
919
920 i810_flush_queue(dev);
921 return 0;
922 }
923
924 static int i810_dma_vertex(struct drm_device *dev, void *data,
925 struct drm_file *file_priv)
926 {
927 struct drm_device_dma *dma = dev->dma;
928 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
929 u32 *hw_status = dev_priv->hw_status_page;
930 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
931 dev_priv->sarea_priv;
932 drm_i810_vertex_t *vertex = data;
933
934 LOCK_TEST_WITH_RETURN(dev, file_priv);
935
936 DRM_DEBUG("idx %d used %d discard %d\n",
937 vertex->idx, vertex->used, vertex->discard);
938
939 if (vertex->idx < 0 || vertex->idx > dma->buf_count)
940 return -EINVAL;
941
942 i810_dma_dispatch_vertex(dev,
943 dma->buflist[vertex->idx],
944 vertex->discard, vertex->used);
945
946 sarea_priv->last_enqueue = dev_priv->counter - 1;
947 sarea_priv->last_dispatch = (int)hw_status[5];
948
949 return 0;
950 }
951
952 static int i810_clear_bufs(struct drm_device *dev, void *data,
953 struct drm_file *file_priv)
954 {
955 drm_i810_clear_t *clear = data;
956
957 LOCK_TEST_WITH_RETURN(dev, file_priv);
958
959 /* GH: Someone's doing nasty things... */
960 if (!dev->dev_private)
961 return -EINVAL;
962
963 i810_dma_dispatch_clear(dev, clear->flags,
964 clear->clear_color, clear->clear_depth);
965 return 0;
966 }
967
968 static int i810_swap_bufs(struct drm_device *dev, void *data,
969 struct drm_file *file_priv)
970 {
971 DRM_DEBUG("\n");
972
973 LOCK_TEST_WITH_RETURN(dev, file_priv);
974
975 i810_dma_dispatch_swap(dev);
976 return 0;
977 }
978
979 static int i810_getage(struct drm_device *dev, void *data,
980 struct drm_file *file_priv)
981 {
982 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
983 u32 *hw_status = dev_priv->hw_status_page;
984 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
985 dev_priv->sarea_priv;
986
987 sarea_priv->last_dispatch = (int)hw_status[5];
988 return 0;
989 }
990
991 static int i810_getbuf(struct drm_device *dev, void *data,
992 struct drm_file *file_priv)
993 {
994 int retcode = 0;
995 drm_i810_dma_t *d = data;
996 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
997 u32 *hw_status = dev_priv->hw_status_page;
998 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
999 dev_priv->sarea_priv;
1000
1001 LOCK_TEST_WITH_RETURN(dev, file_priv);
1002
1003 d->granted = 0;
1004
1005 retcode = i810_dma_get_buffer(dev, d, file_priv);
1006
1007 DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1008 task_pid_nr(current), retcode, d->granted);
1009
1010 sarea_priv->last_dispatch = (int)hw_status[5];
1011
1012 return retcode;
1013 }
1014
1015 static int i810_copybuf(struct drm_device *dev, void *data,
1016 struct drm_file *file_priv)
1017 {
1018 /* Never copy - 2.4.x doesn't need it */
1019 return 0;
1020 }
1021
1022 static int i810_docopy(struct drm_device *dev, void *data,
1023 struct drm_file *file_priv)
1024 {
1025 /* Never copy - 2.4.x doesn't need it */
1026 return 0;
1027 }
1028
1029 static void i810_dma_dispatch_mc(struct drm_device *dev, struct drm_buf *buf, int used,
1030 unsigned int last_render)
1031 {
1032 drm_i810_private_t *dev_priv = dev->dev_private;
1033 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1034 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1035 unsigned long address = (unsigned long)buf->bus_address;
1036 unsigned long start = address - dev->agp->base;
1037 int u;
1038 RING_LOCALS;
1039
1040 i810_kernel_lost_context(dev);
1041
1042 u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1043 if (u != I810_BUF_CLIENT)
1044 DRM_DEBUG("MC found buffer that isn't mine!\n");
1045
1046 if (used > 4 * 1024)
1047 used = 0;
1048
1049 sarea_priv->dirty = 0x7f;
1050
1051 DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1052
1053 dev_priv->counter++;
1054 DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1055 DRM_DEBUG("start : %lx\n", start);
1056 DRM_DEBUG("used : %d\n", used);
1057 DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1058
1059 if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1060 if (used & 4) {
1061 *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1062 used += 4;
1063 }
1064
1065 i810_unmap_buffer(buf);
1066 }
1067 BEGIN_LP_RING(4);
1068 OUT_RING(CMD_OP_BATCH_BUFFER);
1069 OUT_RING(start | BB1_PROTECTED);
1070 OUT_RING(start + used - 4);
1071 OUT_RING(0);
1072 ADVANCE_LP_RING();
1073
1074 BEGIN_LP_RING(8);
1075 OUT_RING(CMD_STORE_DWORD_IDX);
1076 OUT_RING(buf_priv->my_use_idx);
1077 OUT_RING(I810_BUF_FREE);
1078 OUT_RING(0);
1079
1080 OUT_RING(CMD_STORE_DWORD_IDX);
1081 OUT_RING(16);
1082 OUT_RING(last_render);
1083 OUT_RING(0);
1084 ADVANCE_LP_RING();
1085 }
1086
1087 static int i810_dma_mc(struct drm_device *dev, void *data,
1088 struct drm_file *file_priv)
1089 {
1090 struct drm_device_dma *dma = dev->dma;
1091 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1092 u32 *hw_status = dev_priv->hw_status_page;
1093 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1094 dev_priv->sarea_priv;
1095 drm_i810_mc_t *mc = data;
1096
1097 LOCK_TEST_WITH_RETURN(dev, file_priv);
1098
1099 if (mc->idx >= dma->buf_count || mc->idx < 0)
1100 return -EINVAL;
1101
1102 i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1103 mc->last_render);
1104
1105 sarea_priv->last_enqueue = dev_priv->counter - 1;
1106 sarea_priv->last_dispatch = (int)hw_status[5];
1107
1108 return 0;
1109 }
1110
1111 static int i810_rstatus(struct drm_device *dev, void *data,
1112 struct drm_file *file_priv)
1113 {
1114 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1115
1116 return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1117 }
1118
1119 static int i810_ov0_info(struct drm_device *dev, void *data,
1120 struct drm_file *file_priv)
1121 {
1122 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1123 drm_i810_overlay_t *ov = data;
1124
1125 ov->offset = dev_priv->overlay_offset;
1126 ov->physical = dev_priv->overlay_physical;
1127
1128 return 0;
1129 }
1130
1131 static int i810_fstatus(struct drm_device *dev, void *data,
1132 struct drm_file *file_priv)
1133 {
1134 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1135
1136 LOCK_TEST_WITH_RETURN(dev, file_priv);
1137 return I810_READ(0x30008);
1138 }
1139
1140 static int i810_ov0_flip(struct drm_device *dev, void *data,
1141 struct drm_file *file_priv)
1142 {
1143 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1144
1145 LOCK_TEST_WITH_RETURN(dev, file_priv);
1146
1147 /* Tell the overlay to update */
1148 I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1149
1150 return 0;
1151 }
1152
1153 /* Not sure why this isn't set all the time:
1154 */
1155 static void i810_do_init_pageflip(struct drm_device *dev)
1156 {
1157 drm_i810_private_t *dev_priv = dev->dev_private;
1158
1159 DRM_DEBUG("\n");
1160 dev_priv->page_flipping = 1;
1161 dev_priv->current_page = 0;
1162 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1163 }
1164
1165 static int i810_do_cleanup_pageflip(struct drm_device *dev)
1166 {
1167 drm_i810_private_t *dev_priv = dev->dev_private;
1168
1169 DRM_DEBUG("\n");
1170 if (dev_priv->current_page != 0)
1171 i810_dma_dispatch_flip(dev);
1172
1173 dev_priv->page_flipping = 0;
1174 return 0;
1175 }
1176
1177 static int i810_flip_bufs(struct drm_device *dev, void *data,
1178 struct drm_file *file_priv)
1179 {
1180 drm_i810_private_t *dev_priv = dev->dev_private;
1181
1182 DRM_DEBUG("\n");
1183
1184 LOCK_TEST_WITH_RETURN(dev, file_priv);
1185
1186 if (!dev_priv->page_flipping)
1187 i810_do_init_pageflip(dev);
1188
1189 i810_dma_dispatch_flip(dev);
1190 return 0;
1191 }
1192
1193 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1194 {
1195 /* Our userspace depends upon the agp mapping support. */
1196 if (!dev->agp)
1197 return -EINVAL;
1198
1199 pci_set_master(dev->pdev);
1200
1201 return 0;
1202 }
1203
1204 void i810_driver_lastclose(struct drm_device *dev)
1205 {
1206 i810_dma_cleanup(dev);
1207 }
1208
1209 void i810_driver_preclose(struct drm_device *dev, struct drm_file *file_priv)
1210 {
1211 if (dev->dev_private) {
1212 drm_i810_private_t *dev_priv = dev->dev_private;
1213 if (dev_priv->page_flipping)
1214 i810_do_cleanup_pageflip(dev);
1215 }
1216
1217 if (file_priv->master && file_priv->master->lock.hw_lock) {
1218 drm_legacy_idlelock_take(&file_priv->master->lock);
1219 i810_driver_reclaim_buffers(dev, file_priv);
1220 drm_legacy_idlelock_release(&file_priv->master->lock);
1221 } else {
1222 /* master disappeared, clean up stuff anyway and hope nothing
1223 * goes wrong */
1224 i810_driver_reclaim_buffers(dev, file_priv);
1225 }
1226
1227 }
1228
1229 int i810_driver_dma_quiescent(struct drm_device *dev)
1230 {
1231 i810_dma_quiescent(dev);
1232 return 0;
1233 }
1234
1235 const struct drm_ioctl_desc i810_ioctls[] = {
1236 DRM_IOCTL_DEF_DRV(I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1237 DRM_IOCTL_DEF_DRV(I810_VERTEX, i810_dma_vertex, DRM_AUTH|DRM_UNLOCKED),
1238 DRM_IOCTL_DEF_DRV(I810_CLEAR, i810_clear_bufs, DRM_AUTH|DRM_UNLOCKED),
1239 DRM_IOCTL_DEF_DRV(I810_FLUSH, i810_flush_ioctl, DRM_AUTH|DRM_UNLOCKED),
1240 DRM_IOCTL_DEF_DRV(I810_GETAGE, i810_getage, DRM_AUTH|DRM_UNLOCKED),
1241 DRM_IOCTL_DEF_DRV(I810_GETBUF, i810_getbuf, DRM_AUTH|DRM_UNLOCKED),
1242 DRM_IOCTL_DEF_DRV(I810_SWAP, i810_swap_bufs, DRM_AUTH|DRM_UNLOCKED),
1243 DRM_IOCTL_DEF_DRV(I810_COPY, i810_copybuf, DRM_AUTH|DRM_UNLOCKED),
1244 DRM_IOCTL_DEF_DRV(I810_DOCOPY, i810_docopy, DRM_AUTH|DRM_UNLOCKED),
1245 DRM_IOCTL_DEF_DRV(I810_OV0INFO, i810_ov0_info, DRM_AUTH|DRM_UNLOCKED),
1246 DRM_IOCTL_DEF_DRV(I810_FSTATUS, i810_fstatus, DRM_AUTH|DRM_UNLOCKED),
1247 DRM_IOCTL_DEF_DRV(I810_OV0FLIP, i810_ov0_flip, DRM_AUTH|DRM_UNLOCKED),
1248 DRM_IOCTL_DEF_DRV(I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1249 DRM_IOCTL_DEF_DRV(I810_RSTATUS, i810_rstatus, DRM_AUTH|DRM_UNLOCKED),
1250 DRM_IOCTL_DEF_DRV(I810_FLIP, i810_flip_bufs, DRM_AUTH|DRM_UNLOCKED),
1251 };
1252
1253 int i810_max_ioctl = ARRAY_SIZE(i810_ioctls);
1254
1255 /**
1256 * Determine if the device really is AGP or not.
1257 *
1258 * All Intel graphics chipsets are treated as AGP, even if they are really
1259 * PCI-e.
1260 *
1261 * \param dev The device to be tested.
1262 *
1263 * \returns
1264 * A value of 1 is always retured to indictate every i810 is AGP.
1265 */
1266 int i810_driver_device_is_agp(struct drm_device *dev)
1267 {
1268 return 1;
1269 }
Linux with added FPC-III support