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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 "drmP.h"
34#include "drm.h"
35#include "i810_drm.h"
36#include "i810_drv.h"
37#include <linux/interrupt.h> /* For task queue support */
38#include <linux/delay.h>
39#include <linux/slab.h>
40#include <linux/pagemap.h>
41
42#define I810_BUF_FREE 2
43#define I810_BUF_CLIENT 1
44#define I810_BUF_HARDWARE 0
45
46#define I810_BUF_UNMAPPED 0
47#define I810_BUF_MAPPED 1
48
49static struct drm_buf *i810_freelist_get(struct drm_device * dev)
50{
51 struct drm_device_dma *dma = dev->dma;
52 int i;
53 int used;
54
55 /* Linear search might not be the best solution */
56
57 for (i = 0; i < dma->buf_count; i++) {
58 struct drm_buf *buf = dma->buflist[i];
59 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
60 /* In use is already a pointer */
61 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
62 I810_BUF_CLIENT);
63 if (used == I810_BUF_FREE)
64 return buf;
65 }
66 return NULL;
67}
68
69/* This should only be called if the buffer is not sent to the hardware
70 * yet, the hardware updates in use for us once its on the ring buffer.
71 */
72
73static int i810_freelist_put(struct drm_device *dev, struct drm_buf *buf)
74{
75 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
76 int used;
77
78 /* In use is already a pointer */
79 used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
80 if (used != I810_BUF_CLIENT) {
81 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
82 return -EINVAL;
83 }
84
85 return 0;
86}
87
88static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
89{
90 struct drm_file *priv = filp->private_data;
91 struct drm_device *dev;
92 drm_i810_private_t *dev_priv;
93 struct drm_buf *buf;
94 drm_i810_buf_priv_t *buf_priv;
95
96 dev = priv->minor->dev;
97 dev_priv = dev->dev_private;
98 buf = dev_priv->mmap_buffer;
99 buf_priv = buf->dev_private;
100
101 vma->vm_flags |= (VM_IO | VM_DONTCOPY);
102 vma->vm_file = filp;
103
104 buf_priv->currently_mapped = I810_BUF_MAPPED;
105
106 if (io_remap_pfn_range(vma, vma->vm_start,
107 vma->vm_pgoff,
108 vma->vm_end - vma->vm_start, vma->vm_page_prot))
109 return -EAGAIN;
110 return 0;
111}
112
113static const struct file_operations i810_buffer_fops = {
114 .open = drm_open,
115 .release = drm_release,
116 .unlocked_ioctl = drm_ioctl,
117 .mmap = i810_mmap_buffers,
118 .fasync = drm_fasync,
119 .llseek = noop_llseek,
120};
121
122static 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 down_write(¤t->mm->mmap_sem);
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 *)do_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 up_write(¤t->mm->mmap_sem);
149
150 return retcode;
151}
152
153static int i810_unmap_buffer(struct drm_buf *buf)
154{
155 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
156 int retcode = 0;
157
158 if (buf_priv->currently_mapped != I810_BUF_MAPPED)
159 return -EINVAL;
160
161 down_write(¤t->mm->mmap_sem);
162 retcode = do_munmap(current->mm,
163 (unsigned long)buf_priv->virtual,
164 (size_t) buf->total);
165 up_write(¤t->mm->mmap_sem);
166
167 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
168 buf_priv->virtual = NULL;
169
170 return retcode;
171}
172
173static int i810_dma_get_buffer(struct drm_device *dev, drm_i810_dma_t *d,
174 struct drm_file *file_priv)
175{
176 struct drm_buf *buf;
177 drm_i810_buf_priv_t *buf_priv;
178 int retcode = 0;
179
180 buf = i810_freelist_get(dev);
181 if (!buf) {
182 retcode = -ENOMEM;
183 DRM_DEBUG("retcode=%d\n", retcode);
184 return retcode;
185 }
186
187 retcode = i810_map_buffer(buf, file_priv);
188 if (retcode) {
189 i810_freelist_put(dev, buf);
190 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
191 return retcode;
192 }
193 buf->file_priv = file_priv;
194 buf_priv = buf->dev_private;
195 d->granted = 1;
196 d->request_idx = buf->idx;
197 d->request_size = buf->total;
198 d->virtual = buf_priv->virtual;
199
200 return retcode;
201}
202
203static int i810_dma_cleanup(struct drm_device *dev)
204{
205 struct drm_device_dma *dma = dev->dma;
206
207 /* Make sure interrupts are disabled here because the uninstall ioctl
208 * may not have been called from userspace and after dev_private
209 * is freed, it's too late.
210 */
211 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
212 drm_irq_uninstall(dev);
213
214 if (dev->dev_private) {
215 int i;
216 drm_i810_private_t *dev_priv =
217 (drm_i810_private_t *) dev->dev_private;
218
219 if (dev_priv->ring.virtual_start)
220 drm_core_ioremapfree(&dev_priv->ring.map, dev);
221 if (dev_priv->hw_status_page) {
222 pci_free_consistent(dev->pdev, PAGE_SIZE,
223 dev_priv->hw_status_page,
224 dev_priv->dma_status_page);
225 /* Need to rewrite hardware status page */
226 I810_WRITE(0x02080, 0x1ffff000);
227 }
228 kfree(dev->dev_private);
229 dev->dev_private = NULL;
230
231 for (i = 0; i < dma->buf_count; i++) {
232 struct drm_buf *buf = dma->buflist[i];
233 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
234
235 if (buf_priv->kernel_virtual && buf->total)
236 drm_core_ioremapfree(&buf_priv->map, dev);
237 }
238 }
239 return 0;
240}
241
242static int i810_wait_ring(struct drm_device *dev, int n)
243{
244 drm_i810_private_t *dev_priv = dev->dev_private;
245 drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
246 int iters = 0;
247 unsigned long end;
248 unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
249
250 end = jiffies + (HZ * 3);
251 while (ring->space < n) {
252 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
253 ring->space = ring->head - (ring->tail + 8);
254 if (ring->space < 0)
255 ring->space += ring->Size;
256
257 if (ring->head != last_head) {
258 end = jiffies + (HZ * 3);
259 last_head = ring->head;
260 }
261
262 iters++;
263 if (time_before(end, jiffies)) {
264 DRM_ERROR("space: %d wanted %d\n", ring->space, n);
265 DRM_ERROR("lockup\n");
266 goto out_wait_ring;
267 }
268 udelay(1);
269 }
270
271out_wait_ring:
272 return iters;
273}
274
275static void i810_kernel_lost_context(struct drm_device *dev)
276{
277 drm_i810_private_t *dev_priv = dev->dev_private;
278 drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
279
280 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
281 ring->tail = I810_READ(LP_RING + RING_TAIL);
282 ring->space = ring->head - (ring->tail + 8);
283 if (ring->space < 0)
284 ring->space += ring->Size;
285}
286
287static int i810_freelist_init(struct drm_device *dev, drm_i810_private_t *dev_priv)
288{
289 struct drm_device_dma *dma = dev->dma;
290 int my_idx = 24;
291 u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
292 int i;
293
294 if (dma->buf_count > 1019) {
295 /* Not enough space in the status page for the freelist */
296 return -EINVAL;
297 }
298
299 for (i = 0; i < dma->buf_count; i++) {
300 struct drm_buf *buf = dma->buflist[i];
301 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
302
303 buf_priv->in_use = hw_status++;
304 buf_priv->my_use_idx = my_idx;
305 my_idx += 4;
306
307 *buf_priv->in_use = I810_BUF_FREE;
308
309 buf_priv->map.offset = buf->bus_address;
310 buf_priv->map.size = buf->total;
311 buf_priv->map.type = _DRM_AGP;
312 buf_priv->map.flags = 0;
313 buf_priv->map.mtrr = 0;
314
315 drm_core_ioremap(&buf_priv->map, dev);
316 buf_priv->kernel_virtual = buf_priv->map.handle;
317
318 }
319 return 0;
320}
321
322static int i810_dma_initialize(struct drm_device *dev,
323 drm_i810_private_t *dev_priv,
324 drm_i810_init_t *init)
325{
326 struct drm_map_list *r_list;
327 memset(dev_priv, 0, sizeof(drm_i810_private_t));
328
329 list_for_each_entry(r_list, &dev->maplist, head) {
330 if (r_list->map &&
331 r_list->map->type == _DRM_SHM &&
332 r_list->map->flags & _DRM_CONTAINS_LOCK) {
333 dev_priv->sarea_map = r_list->map;
334 break;
335 }
336 }
337 if (!dev_priv->sarea_map) {
338 dev->dev_private = (void *)dev_priv;
339 i810_dma_cleanup(dev);
340 DRM_ERROR("can not find sarea!\n");
341 return -EINVAL;
342 }
343 dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
344 if (!dev_priv->mmio_map) {
345 dev->dev_private = (void *)dev_priv;
346 i810_dma_cleanup(dev);
347 DRM_ERROR("can not find mmio map!\n");
348 return -EINVAL;
349 }
350 dev->agp_buffer_token = init->buffers_offset;
351 dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
352 if (!dev->agp_buffer_map) {
353 dev->dev_private = (void *)dev_priv;
354 i810_dma_cleanup(dev);
355 DRM_ERROR("can not find dma buffer map!\n");
356 return -EINVAL;
357 }
358
359 dev_priv->sarea_priv = (drm_i810_sarea_t *)
360 ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
361
362 dev_priv->ring.Start = init->ring_start;
363 dev_priv->ring.End = init->ring_end;
364 dev_priv->ring.Size = init->ring_size;
365
366 dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
367 dev_priv->ring.map.size = init->ring_size;
368 dev_priv->ring.map.type = _DRM_AGP;
369 dev_priv->ring.map.flags = 0;
370 dev_priv->ring.map.mtrr = 0;
371
372 drm_core_ioremap(&dev_priv->ring.map, dev);
373
374 if (dev_priv->ring.map.handle == NULL) {
375 dev->dev_private = (void *)dev_priv;
376 i810_dma_cleanup(dev);
377 DRM_ERROR("can not ioremap virtual address for"
378 " ring buffer\n");
379 return -ENOMEM;
380 }
381
382 dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
383
384 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
385
386 dev_priv->w = init->w;
387 dev_priv->h = init->h;
388 dev_priv->pitch = init->pitch;
389 dev_priv->back_offset = init->back_offset;
390 dev_priv->depth_offset = init->depth_offset;
391 dev_priv->front_offset = init->front_offset;
392
393 dev_priv->overlay_offset = init->overlay_offset;
394 dev_priv->overlay_physical = init->overlay_physical;
395
396 dev_priv->front_di1 = init->front_offset | init->pitch_bits;
397 dev_priv->back_di1 = init->back_offset | init->pitch_bits;
398 dev_priv->zi1 = init->depth_offset | init->pitch_bits;
399
400 /* Program Hardware Status Page */
401 dev_priv->hw_status_page =
402 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
403 &dev_priv->dma_status_page);
404 if (!dev_priv->hw_status_page) {
405 dev->dev_private = (void *)dev_priv;
406 i810_dma_cleanup(dev);
407 DRM_ERROR("Can not allocate hardware status page\n");
408 return -ENOMEM;
409 }
410 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
411 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
412
413 I810_WRITE(0x02080, dev_priv->dma_status_page);
414 DRM_DEBUG("Enabled hardware status page\n");
415
416 /* Now we need to init our freelist */
417 if (i810_freelist_init(dev, dev_priv) != 0) {
418 dev->dev_private = (void *)dev_priv;
419 i810_dma_cleanup(dev);
420 DRM_ERROR("Not enough space in the status page for"
421 " the freelist\n");
422 return -ENOMEM;
423 }
424 dev->dev_private = (void *)dev_priv;
425
426 return 0;
427}
428
429static int i810_dma_init(struct drm_device *dev, void *data,
430 struct drm_file *file_priv)
431{
432 drm_i810_private_t *dev_priv;
433 drm_i810_init_t *init = data;
434 int retcode = 0;
435
436 switch (init->func) {
437 case I810_INIT_DMA_1_4:
438 DRM_INFO("Using v1.4 init.\n");
439 dev_priv = kmalloc(sizeof(drm_i810_private_t), GFP_KERNEL);
440 if (dev_priv == NULL)
441 return -ENOMEM;
442 retcode = i810_dma_initialize(dev, dev_priv, init);
443 break;
444
445 case I810_CLEANUP_DMA:
446 DRM_INFO("DMA Cleanup\n");
447 retcode = i810_dma_cleanup(dev);
448 break;
449 default:
450 return -EINVAL;
451 }
452
453 return retcode;
454}
455
456/* Most efficient way to verify state for the i810 is as it is
457 * emitted. Non-conformant state is silently dropped.
458 *
459 * Use 'volatile' & local var tmp to force the emitted values to be
460 * identical to the verified ones.
461 */
462static void i810EmitContextVerified(struct drm_device *dev,
463 volatile unsigned int *code)
464{
465 drm_i810_private_t *dev_priv = dev->dev_private;
466 int i, j = 0;
467 unsigned int tmp;
468 RING_LOCALS;
469
470 BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
471
472 OUT_RING(GFX_OP_COLOR_FACTOR);
473 OUT_RING(code[I810_CTXREG_CF1]);
474
475 OUT_RING(GFX_OP_STIPPLE);
476 OUT_RING(code[I810_CTXREG_ST1]);
477
478 for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
479 tmp = code[i];
480
481 if ((tmp & (7 << 29)) == (3 << 29) &&
482 (tmp & (0x1f << 24)) < (0x1d << 24)) {
483 OUT_RING(tmp);
484 j++;
485 } else
486 printk("constext state dropped!!!\n");
487 }
488
489 if (j & 1)
490 OUT_RING(0);
491
492 ADVANCE_LP_RING();
493}
494
495static void i810EmitTexVerified(struct drm_device *dev, volatile unsigned int *code)
496{
497 drm_i810_private_t *dev_priv = dev->dev_private;
498 int i, j = 0;
499 unsigned int tmp;
500 RING_LOCALS;
501
502 BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
503
504 OUT_RING(GFX_OP_MAP_INFO);
505 OUT_RING(code[I810_TEXREG_MI1]);
506 OUT_RING(code[I810_TEXREG_MI2]);
507 OUT_RING(code[I810_TEXREG_MI3]);
508
509 for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
510 tmp = code[i];
511
512 if ((tmp & (7 << 29)) == (3 << 29) &&
513 (tmp & (0x1f << 24)) < (0x1d << 24)) {
514 OUT_RING(tmp);
515 j++;
516 } else
517 printk("texture state dropped!!!\n");
518 }
519
520 if (j & 1)
521 OUT_RING(0);
522
523 ADVANCE_LP_RING();
524}
525
526/* Need to do some additional checking when setting the dest buffer.
527 */
528static void i810EmitDestVerified(struct drm_device *dev,
529 volatile unsigned int *code)
530{
531 drm_i810_private_t *dev_priv = dev->dev_private;
532 unsigned int tmp;
533 RING_LOCALS;
534
535 BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
536
537 tmp = code[I810_DESTREG_DI1];
538 if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
539 OUT_RING(CMD_OP_DESTBUFFER_INFO);
540 OUT_RING(tmp);
541 } else
542 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
543 tmp, dev_priv->front_di1, dev_priv->back_di1);
544
545 /* invarient:
546 */
547 OUT_RING(CMD_OP_Z_BUFFER_INFO);
548 OUT_RING(dev_priv->zi1);
549
550 OUT_RING(GFX_OP_DESTBUFFER_VARS);
551 OUT_RING(code[I810_DESTREG_DV1]);
552
553 OUT_RING(GFX_OP_DRAWRECT_INFO);
554 OUT_RING(code[I810_DESTREG_DR1]);
555 OUT_RING(code[I810_DESTREG_DR2]);
556 OUT_RING(code[I810_DESTREG_DR3]);
557 OUT_RING(code[I810_DESTREG_DR4]);
558 OUT_RING(0);
559
560 ADVANCE_LP_RING();
561}
562
563static void i810EmitState(struct drm_device *dev)
564{
565 drm_i810_private_t *dev_priv = dev->dev_private;
566 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
567 unsigned int dirty = sarea_priv->dirty;
568
569 DRM_DEBUG("%x\n", dirty);
570
571 if (dirty & I810_UPLOAD_BUFFERS) {
572 i810EmitDestVerified(dev, sarea_priv->BufferState);
573 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
574 }
575
576 if (dirty & I810_UPLOAD_CTX) {
577 i810EmitContextVerified(dev, sarea_priv->ContextState);
578 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
579 }
580
581 if (dirty & I810_UPLOAD_TEX0) {
582 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
583 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
584 }
585
586 if (dirty & I810_UPLOAD_TEX1) {
587 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
588 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
589 }
590}
591
592/* need to verify
593 */
594static void i810_dma_dispatch_clear(struct drm_device *dev, int flags,
595 unsigned int clear_color,
596 unsigned int clear_zval)
597{
598 drm_i810_private_t *dev_priv = dev->dev_private;
599 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
600 int nbox = sarea_priv->nbox;
601 struct drm_clip_rect *pbox = sarea_priv->boxes;
602 int pitch = dev_priv->pitch;
603 int cpp = 2;
604 int i;
605 RING_LOCALS;
606
607 if (dev_priv->current_page == 1) {
608 unsigned int tmp = flags;
609
610 flags &= ~(I810_FRONT | I810_BACK);
611 if (tmp & I810_FRONT)
612 flags |= I810_BACK;
613 if (tmp & I810_BACK)
614 flags |= I810_FRONT;
615 }
616
617 i810_kernel_lost_context(dev);
618
619 if (nbox > I810_NR_SAREA_CLIPRECTS)
620 nbox = I810_NR_SAREA_CLIPRECTS;
621
622 for (i = 0; i < nbox; i++, pbox++) {
623 unsigned int x = pbox->x1;
624 unsigned int y = pbox->y1;
625 unsigned int width = (pbox->x2 - x) * cpp;
626 unsigned int height = pbox->y2 - y;
627 unsigned int start = y * pitch + x * cpp;
628
629 if (pbox->x1 > pbox->x2 ||
630 pbox->y1 > pbox->y2 ||
631 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
632 continue;
633
634 if (flags & I810_FRONT) {
635 BEGIN_LP_RING(6);
636 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
637 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
638 OUT_RING((height << 16) | width);
639 OUT_RING(start);
640 OUT_RING(clear_color);
641 OUT_RING(0);
642 ADVANCE_LP_RING();
643 }
644
645 if (flags & I810_BACK) {
646 BEGIN_LP_RING(6);
647 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
648 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
649 OUT_RING((height << 16) | width);
650 OUT_RING(dev_priv->back_offset + start);
651 OUT_RING(clear_color);
652 OUT_RING(0);
653 ADVANCE_LP_RING();
654 }
655
656 if (flags & I810_DEPTH) {
657 BEGIN_LP_RING(6);
658 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
659 OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
660 OUT_RING((height << 16) | width);
661 OUT_RING(dev_priv->depth_offset + start);
662 OUT_RING(clear_zval);
663 OUT_RING(0);
664 ADVANCE_LP_RING();
665 }
666 }
667}
668
669static void i810_dma_dispatch_swap(struct drm_device *dev)
670{
671 drm_i810_private_t *dev_priv = dev->dev_private;
672 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
673 int nbox = sarea_priv->nbox;
674 struct drm_clip_rect *pbox = sarea_priv->boxes;
675 int pitch = dev_priv->pitch;
676 int cpp = 2;
677 int i;
678 RING_LOCALS;
679
680 DRM_DEBUG("swapbuffers\n");
681
682 i810_kernel_lost_context(dev);
683
684 if (nbox > I810_NR_SAREA_CLIPRECTS)
685 nbox = I810_NR_SAREA_CLIPRECTS;
686
687 for (i = 0; i < nbox; i++, pbox++) {
688 unsigned int w = pbox->x2 - pbox->x1;
689 unsigned int h = pbox->y2 - pbox->y1;
690 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
691 unsigned int start = dst;
692
693 if (pbox->x1 > pbox->x2 ||
694 pbox->y1 > pbox->y2 ||
695 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
696 continue;
697
698 BEGIN_LP_RING(6);
699 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
700 OUT_RING(pitch | (0xCC << 16));
701 OUT_RING((h << 16) | (w * cpp));
702 if (dev_priv->current_page == 0)
703 OUT_RING(dev_priv->front_offset + start);
704 else
705 OUT_RING(dev_priv->back_offset + start);
706 OUT_RING(pitch);
707 if (dev_priv->current_page == 0)
708 OUT_RING(dev_priv->back_offset + start);
709 else
710 OUT_RING(dev_priv->front_offset + start);
711 ADVANCE_LP_RING();
712 }
713}
714
715static void i810_dma_dispatch_vertex(struct drm_device *dev,
716 struct drm_buf *buf, int discard, int used)
717{
718 drm_i810_private_t *dev_priv = dev->dev_private;
719 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
720 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
721 struct drm_clip_rect *box = sarea_priv->boxes;
722 int nbox = sarea_priv->nbox;
723 unsigned long address = (unsigned long)buf->bus_address;
724 unsigned long start = address - dev->agp->base;
725 int i = 0;
726 RING_LOCALS;
727
728 i810_kernel_lost_context(dev);
729
730 if (nbox > I810_NR_SAREA_CLIPRECTS)
731 nbox = I810_NR_SAREA_CLIPRECTS;
732
733 if (used > 4 * 1024)
734 used = 0;
735
736 if (sarea_priv->dirty)
737 i810EmitState(dev);
738
739 if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
740 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
741
742 *(u32 *) buf_priv->kernel_virtual =
743 ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
744
745 if (used & 4) {
746 *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
747 used += 4;
748 }
749
750 i810_unmap_buffer(buf);
751 }
752
753 if (used) {
754 do {
755 if (i < nbox) {
756 BEGIN_LP_RING(4);
757 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
758 SC_ENABLE);
759 OUT_RING(GFX_OP_SCISSOR_INFO);
760 OUT_RING(box[i].x1 | (box[i].y1 << 16));
761 OUT_RING((box[i].x2 -
762 1) | ((box[i].y2 - 1) << 16));
763 ADVANCE_LP_RING();
764 }
765
766 BEGIN_LP_RING(4);
767 OUT_RING(CMD_OP_BATCH_BUFFER);
768 OUT_RING(start | BB1_PROTECTED);
769 OUT_RING(start + used - 4);
770 OUT_RING(0);
771 ADVANCE_LP_RING();
772
773 } while (++i < nbox);
774 }
775
776 if (discard) {
777 dev_priv->counter++;
778
779 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
780 I810_BUF_HARDWARE);
781
782 BEGIN_LP_RING(8);
783 OUT_RING(CMD_STORE_DWORD_IDX);
784 OUT_RING(20);
785 OUT_RING(dev_priv->counter);
786 OUT_RING(CMD_STORE_DWORD_IDX);
787 OUT_RING(buf_priv->my_use_idx);
788 OUT_RING(I810_BUF_FREE);
789 OUT_RING(CMD_REPORT_HEAD);
790 OUT_RING(0);
791 ADVANCE_LP_RING();
792 }
793}
794
795static void i810_dma_dispatch_flip(struct drm_device *dev)
796{
797 drm_i810_private_t *dev_priv = dev->dev_private;
798 int pitch = dev_priv->pitch;
799 RING_LOCALS;
800
801 DRM_DEBUG("page=%d pfCurrentPage=%d\n",
802 dev_priv->current_page,
803 dev_priv->sarea_priv->pf_current_page);
804
805 i810_kernel_lost_context(dev);
806
807 BEGIN_LP_RING(2);
808 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
809 OUT_RING(0);
810 ADVANCE_LP_RING();
811
812 BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
813 /* On i815 at least ASYNC is buggy */
814 /* pitch<<5 is from 11.2.8 p158,
815 its the pitch / 8 then left shifted 8,
816 so (pitch >> 3) << 8 */
817 OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
818 if (dev_priv->current_page == 0) {
819 OUT_RING(dev_priv->back_offset);
820 dev_priv->current_page = 1;
821 } else {
822 OUT_RING(dev_priv->front_offset);
823 dev_priv->current_page = 0;
824 }
825 OUT_RING(0);
826 ADVANCE_LP_RING();
827
828 BEGIN_LP_RING(2);
829 OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
830 OUT_RING(0);
831 ADVANCE_LP_RING();
832
833 /* Increment the frame counter. The client-side 3D driver must
834 * throttle the framerate by waiting for this value before
835 * performing the swapbuffer ioctl.
836 */
837 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
838
839}
840
841static void i810_dma_quiescent(struct drm_device *dev)
842{
843 drm_i810_private_t *dev_priv = dev->dev_private;
844 RING_LOCALS;
845
846 i810_kernel_lost_context(dev);
847
848 BEGIN_LP_RING(4);
849 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
850 OUT_RING(CMD_REPORT_HEAD);
851 OUT_RING(0);
852 OUT_RING(0);
853 ADVANCE_LP_RING();
854
855 i810_wait_ring(dev, dev_priv->ring.Size - 8);
856}
857
858static int i810_flush_queue(struct drm_device *dev)
859{
860 drm_i810_private_t *dev_priv = dev->dev_private;
861 struct drm_device_dma *dma = dev->dma;
862 int i, ret = 0;
863 RING_LOCALS;
864
865 i810_kernel_lost_context(dev);
866
867 BEGIN_LP_RING(2);
868 OUT_RING(CMD_REPORT_HEAD);
869 OUT_RING(0);
870 ADVANCE_LP_RING();
871
872 i810_wait_ring(dev, dev_priv->ring.Size - 8);
873
874 for (i = 0; i < dma->buf_count; i++) {
875 struct drm_buf *buf = dma->buflist[i];
876 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
877
878 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
879 I810_BUF_FREE);
880
881 if (used == I810_BUF_HARDWARE)
882 DRM_DEBUG("reclaimed from HARDWARE\n");
883 if (used == I810_BUF_CLIENT)
884 DRM_DEBUG("still on client\n");
885 }
886
887 return ret;
888}
889
890/* Must be called with the lock held */
891static void i810_reclaim_buffers(struct drm_device *dev,
892 struct drm_file *file_priv)
893{
894 struct drm_device_dma *dma = dev->dma;
895 int i;
896
897 if (!dma)
898 return;
899 if (!dev->dev_private)
900 return;
901 if (!dma->buflist)
902 return;
903
904 i810_flush_queue(dev);
905
906 for (i = 0; i < dma->buf_count; i++) {
907 struct drm_buf *buf = dma->buflist[i];
908 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
909
910 if (buf->file_priv == file_priv && buf_priv) {
911 int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
912 I810_BUF_FREE);
913
914 if (used == I810_BUF_CLIENT)
915 DRM_DEBUG("reclaimed from client\n");
916 if (buf_priv->currently_mapped == I810_BUF_MAPPED)
917 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
918 }
919 }
920}
921
922static int i810_flush_ioctl(struct drm_device *dev, void *data,
923 struct drm_file *file_priv)
924{
925 LOCK_TEST_WITH_RETURN(dev, file_priv);
926
927 i810_flush_queue(dev);
928 return 0;
929}
930
931static int i810_dma_vertex(struct drm_device *dev, void *data,
932 struct drm_file *file_priv)
933{
934 struct drm_device_dma *dma = dev->dma;
935 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
936 u32 *hw_status = dev_priv->hw_status_page;
937 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
938 dev_priv->sarea_priv;
939 drm_i810_vertex_t *vertex = data;
940
941 LOCK_TEST_WITH_RETURN(dev, file_priv);
942
943 DRM_DEBUG("idx %d used %d discard %d\n",
944 vertex->idx, vertex->used, vertex->discard);
945
946 if (vertex->idx < 0 || vertex->idx > dma->buf_count)
947 return -EINVAL;
948
949 i810_dma_dispatch_vertex(dev,
950 dma->buflist[vertex->idx],
951 vertex->discard, vertex->used);
952
953 atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
954 atomic_inc(&dev->counts[_DRM_STAT_DMA]);
955 sarea_priv->last_enqueue = dev_priv->counter - 1;
956 sarea_priv->last_dispatch = (int)hw_status[5];
957
958 return 0;
959}
960
961static int i810_clear_bufs(struct drm_device *dev, void *data,
962 struct drm_file *file_priv)
963{
964 drm_i810_clear_t *clear = data;
965
966 LOCK_TEST_WITH_RETURN(dev, file_priv);
967
968 /* GH: Someone's doing nasty things... */
969 if (!dev->dev_private)
970 return -EINVAL;
971
972 i810_dma_dispatch_clear(dev, clear->flags,
973 clear->clear_color, clear->clear_depth);
974 return 0;
975}
976
977static int i810_swap_bufs(struct drm_device *dev, void *data,
978 struct drm_file *file_priv)
979{
980 DRM_DEBUG("\n");
981
982 LOCK_TEST_WITH_RETURN(dev, file_priv);
983
984 i810_dma_dispatch_swap(dev);
985 return 0;
986}
987
988static int i810_getage(struct drm_device *dev, void *data,
989 struct drm_file *file_priv)
990{
991 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
992 u32 *hw_status = dev_priv->hw_status_page;
993 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
994 dev_priv->sarea_priv;
995
996 sarea_priv->last_dispatch = (int)hw_status[5];
997 return 0;
998}
999
1000static int i810_getbuf(struct drm_device *dev, void *data,
1001 struct drm_file *file_priv)
1002{
1003 int retcode = 0;
1004 drm_i810_dma_t *d = data;
1005 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1006 u32 *hw_status = dev_priv->hw_status_page;
1007 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1008 dev_priv->sarea_priv;
1009
1010 LOCK_TEST_WITH_RETURN(dev, file_priv);
1011
1012 d->granted = 0;
1013
1014 retcode = i810_dma_get_buffer(dev, d, file_priv);
1015
1016 DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1017 task_pid_nr(current), retcode, d->granted);
1018
1019 sarea_priv->last_dispatch = (int)hw_status[5];
1020
1021 return retcode;
1022}
1023
1024static int i810_copybuf(struct drm_device *dev, void *data,
1025 struct drm_file *file_priv)
1026{
1027 /* Never copy - 2.4.x doesn't need it */
1028 return 0;
1029}
1030
1031static int i810_docopy(struct drm_device *dev, void *data,
1032 struct drm_file *file_priv)
1033{
1034 /* Never copy - 2.4.x doesn't need it */
1035 return 0;
1036}
1037
1038static void i810_dma_dispatch_mc(struct drm_device *dev, struct drm_buf *buf, int used,
1039 unsigned int last_render)
1040{
1041 drm_i810_private_t *dev_priv = dev->dev_private;
1042 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1043 drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1044 unsigned long address = (unsigned long)buf->bus_address;
1045 unsigned long start = address - dev->agp->base;
1046 int u;
1047 RING_LOCALS;
1048
1049 i810_kernel_lost_context(dev);
1050
1051 u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1052 if (u != I810_BUF_CLIENT)
1053 DRM_DEBUG("MC found buffer that isn't mine!\n");
1054
1055 if (used > 4 * 1024)
1056 used = 0;
1057
1058 sarea_priv->dirty = 0x7f;
1059
1060 DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1061
1062 dev_priv->counter++;
1063 DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1064 DRM_DEBUG("start : %lx\n", start);
1065 DRM_DEBUG("used : %d\n", used);
1066 DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1067
1068 if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1069 if (used & 4) {
1070 *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1071 used += 4;
1072 }
1073
1074 i810_unmap_buffer(buf);
1075 }
1076 BEGIN_LP_RING(4);
1077 OUT_RING(CMD_OP_BATCH_BUFFER);
1078 OUT_RING(start | BB1_PROTECTED);
1079 OUT_RING(start + used - 4);
1080 OUT_RING(0);
1081 ADVANCE_LP_RING();
1082
1083 BEGIN_LP_RING(8);
1084 OUT_RING(CMD_STORE_DWORD_IDX);
1085 OUT_RING(buf_priv->my_use_idx);
1086 OUT_RING(I810_BUF_FREE);
1087 OUT_RING(0);
1088
1089 OUT_RING(CMD_STORE_DWORD_IDX);
1090 OUT_RING(16);
1091 OUT_RING(last_render);
1092 OUT_RING(0);
1093 ADVANCE_LP_RING();
1094}
1095
1096static int i810_dma_mc(struct drm_device *dev, void *data,
1097 struct drm_file *file_priv)
1098{
1099 struct drm_device_dma *dma = dev->dma;
1100 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1101 u32 *hw_status = dev_priv->hw_status_page;
1102 drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1103 dev_priv->sarea_priv;
1104 drm_i810_mc_t *mc = data;
1105
1106 LOCK_TEST_WITH_RETURN(dev, file_priv);
1107
1108 if (mc->idx >= dma->buf_count || mc->idx < 0)
1109 return -EINVAL;
1110
1111 i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1112 mc->last_render);
1113
1114 atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
1115 atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1116 sarea_priv->last_enqueue = dev_priv->counter - 1;
1117 sarea_priv->last_dispatch = (int)hw_status[5];
1118
1119 return 0;
1120}
1121
1122static int i810_rstatus(struct drm_device *dev, void *data,
1123 struct drm_file *file_priv)
1124{
1125 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1126
1127 return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1128}
1129
1130static int i810_ov0_info(struct drm_device *dev, void *data,
1131 struct drm_file *file_priv)
1132{
1133 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1134 drm_i810_overlay_t *ov = data;
1135
1136 ov->offset = dev_priv->overlay_offset;
1137 ov->physical = dev_priv->overlay_physical;
1138
1139 return 0;
1140}
1141
1142static int i810_fstatus(struct drm_device *dev, void *data,
1143 struct drm_file *file_priv)
1144{
1145 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1146
1147 LOCK_TEST_WITH_RETURN(dev, file_priv);
1148 return I810_READ(0x30008);
1149}
1150
1151static int i810_ov0_flip(struct drm_device *dev, void *data,
1152 struct drm_file *file_priv)
1153{
1154 drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1155
1156 LOCK_TEST_WITH_RETURN(dev, file_priv);
1157
1158 /* Tell the overlay to update */
1159 I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1160
1161 return 0;
1162}
1163
1164/* Not sure why this isn't set all the time:
1165 */
1166static void i810_do_init_pageflip(struct drm_device *dev)
1167{
1168 drm_i810_private_t *dev_priv = dev->dev_private;
1169
1170 DRM_DEBUG("\n");
1171 dev_priv->page_flipping = 1;
1172 dev_priv->current_page = 0;
1173 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1174}
1175
1176static int i810_do_cleanup_pageflip(struct drm_device *dev)
1177{
1178 drm_i810_private_t *dev_priv = dev->dev_private;
1179
1180 DRM_DEBUG("\n");
1181 if (dev_priv->current_page != 0)
1182 i810_dma_dispatch_flip(dev);
1183
1184 dev_priv->page_flipping = 0;
1185 return 0;
1186}
1187
1188static int i810_flip_bufs(struct drm_device *dev, void *data,
1189 struct drm_file *file_priv)
1190{
1191 drm_i810_private_t *dev_priv = dev->dev_private;
1192
1193 DRM_DEBUG("\n");
1194
1195 LOCK_TEST_WITH_RETURN(dev, file_priv);
1196
1197 if (!dev_priv->page_flipping)
1198 i810_do_init_pageflip(dev);
1199
1200 i810_dma_dispatch_flip(dev);
1201 return 0;
1202}
1203
1204int i810_driver_load(struct drm_device *dev, unsigned long flags)
1205{
1206 /* i810 has 4 more counters */
1207 dev->counters += 4;
1208 dev->types[6] = _DRM_STAT_IRQ;
1209 dev->types[7] = _DRM_STAT_PRIMARY;
1210 dev->types[8] = _DRM_STAT_SECONDARY;
1211 dev->types[9] = _DRM_STAT_DMA;
1212
1213 return 0;
1214}
1215
1216void i810_driver_lastclose(struct drm_device *dev)
1217{
1218 i810_dma_cleanup(dev);
1219}
1220
1221void i810_driver_preclose(struct drm_device *dev, struct drm_file *file_priv)
1222{
1223 if (dev->dev_private) {
1224 drm_i810_private_t *dev_priv = dev->dev_private;
1225 if (dev_priv->page_flipping)
1226 i810_do_cleanup_pageflip(dev);
1227 }
1228}
1229
1230void i810_driver_reclaim_buffers_locked(struct drm_device *dev,
1231 struct drm_file *file_priv)
1232{
1233 i810_reclaim_buffers(dev, file_priv);
1234}
1235
1236int i810_driver_dma_quiescent(struct drm_device *dev)
1237{
1238 i810_dma_quiescent(dev);
1239 return 0;
1240}
1241
1242struct drm_ioctl_desc i810_ioctls[] = {
1243 DRM_IOCTL_DEF_DRV(I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1244 DRM_IOCTL_DEF_DRV(I810_VERTEX, i810_dma_vertex, DRM_AUTH|DRM_UNLOCKED),
1245 DRM_IOCTL_DEF_DRV(I810_CLEAR, i810_clear_bufs, DRM_AUTH|DRM_UNLOCKED),
1246 DRM_IOCTL_DEF_DRV(I810_FLUSH, i810_flush_ioctl, DRM_AUTH|DRM_UNLOCKED),
1247 DRM_IOCTL_DEF_DRV(I810_GETAGE, i810_getage, DRM_AUTH|DRM_UNLOCKED),
1248 DRM_IOCTL_DEF_DRV(I810_GETBUF, i810_getbuf, DRM_AUTH|DRM_UNLOCKED),
1249 DRM_IOCTL_DEF_DRV(I810_SWAP, i810_swap_bufs, DRM_AUTH|DRM_UNLOCKED),
1250 DRM_IOCTL_DEF_DRV(I810_COPY, i810_copybuf, DRM_AUTH|DRM_UNLOCKED),
1251 DRM_IOCTL_DEF_DRV(I810_DOCOPY, i810_docopy, DRM_AUTH|DRM_UNLOCKED),
1252 DRM_IOCTL_DEF_DRV(I810_OV0INFO, i810_ov0_info, DRM_AUTH|DRM_UNLOCKED),
1253 DRM_IOCTL_DEF_DRV(I810_FSTATUS, i810_fstatus, DRM_AUTH|DRM_UNLOCKED),
1254 DRM_IOCTL_DEF_DRV(I810_OV0FLIP, i810_ov0_flip, DRM_AUTH|DRM_UNLOCKED),
1255 DRM_IOCTL_DEF_DRV(I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1256 DRM_IOCTL_DEF_DRV(I810_RSTATUS, i810_rstatus, DRM_AUTH|DRM_UNLOCKED),
1257 DRM_IOCTL_DEF_DRV(I810_FLIP, i810_flip_bufs, DRM_AUTH|DRM_UNLOCKED),
1258};
1259
1260int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1261
1262/**
1263 * Determine if the device really is AGP or not.
1264 *
1265 * All Intel graphics chipsets are treated as AGP, even if they are really
1266 * PCI-e.
1267 *
1268 * \param dev The device to be tested.
1269 *
1270 * \returns
1271 * A value of 1 is always retured to indictate every i810 is AGP.
1272 */
1273int i810_driver_device_is_agp(struct drm_device *dev)
1274{
1275 return 1;
1276}
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
48static 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
72static 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
87static 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
111static 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
122static 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
152static 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
169static 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
199static 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
236static 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
265out_wait_ring:
266 return iters;
267}
268
269static 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
281static 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
316static 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
423static 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 */
456static 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
489static 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 */
522static 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
557static 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 */
588static 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
663static 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
709static 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
789static 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
835static 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
852static 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 */
885void 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
916static 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
925static 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
953static 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
969static 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
980static 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
992static 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
1016static 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
1023static 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
1030static 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
1088static 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
1112static 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
1120static 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
1132static 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
1141static 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 */
1156static 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
1166static 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
1178static 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
1194int 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
1205void i810_driver_lastclose(struct drm_device *dev)
1206{
1207 i810_dma_cleanup(dev);
1208}
1209
1210void 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
1230int i810_driver_dma_quiescent(struct drm_device *dev)
1231{
1232 i810_dma_quiescent(dev);
1233 return 0;
1234}
1235
1236const 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
1254int 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 */
1267int i810_driver_device_is_agp(struct drm_device *dev)
1268{
1269 return 1;
1270}