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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_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
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_legacy_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_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
422static 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 */
455static 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
488static 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 */
521static 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
556static 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 */
587static 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
662static 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
708static 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
788static 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
834static 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
851static 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 */
884void 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
915static 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
924static 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
952static 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
968static 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
979static 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
991static 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
1015static 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
1022static 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
1029static 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
1087static 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
1111static 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
1119static 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
1131static 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
1140static 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 */
1155static 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
1165static 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
1177static 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
1193int 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
1204void i810_driver_lastclose(struct drm_device *dev)
1205{
1206 i810_dma_cleanup(dev);
1207}
1208
1209void 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
1229int i810_driver_dma_quiescent(struct drm_device *dev)
1230{
1231 i810_dma_quiescent(dev);
1232 return 0;
1233}
1234
1235const 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
1253int 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 */
1266int i810_driver_device_is_agp(struct drm_device *dev)
1267{
1268 return 1;
1269}