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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/pagemap.h>
40
41 #define I810_BUF_FREE           2
42 #define I810_BUF_CLIENT         1
43 #define I810_BUF_HARDWARE       0
44
45 #define I810_BUF_UNMAPPED 0
46 #define I810_BUF_MAPPED   1
47
48 static struct drm_buf *i810_freelist_get(struct drm_device * dev)
49 {
50         struct drm_device_dma *dma = dev->dma;
51         int i;
52         int used;
53
54         /* Linear search might not be the best solution */
55
56         for (i = 0; i < dma->buf_count; i++) {
57                 struct drm_buf *buf = dma->buflist[i];
58                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
59                 /* In use is already a pointer */
60                 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
61                                I810_BUF_CLIENT);
62                 if (used == I810_BUF_FREE) {
63                         return buf;
64                 }
65         }
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
73 static 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
88 static 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         lock_kernel();
97         dev = priv->head->dev;
98         dev_priv = dev->dev_private;
99         buf = dev_priv->mmap_buffer;
100         buf_priv = buf->dev_private;
101
102         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
103         vma->vm_file = filp;
104
105         buf_priv->currently_mapped = I810_BUF_MAPPED;
106         unlock_kernel();
107
108         if (io_remap_pfn_range(vma, vma->vm_start,
109                                vma->vm_pgoff,
110                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
111                 return -EAGAIN;
112         return 0;
113 }
114
115 static const struct file_operations i810_buffer_fops = {
116         .open = drm_open,
117         .release = drm_release,
118         .ioctl = drm_ioctl,
119         .mmap = i810_mmap_buffers,
120         .fasync = drm_fasync,
121 };
122
123 static int i810_map_buffer(struct drm_buf * buf, struct drm_file *file_priv)
124 {
125         struct drm_device *dev = file_priv->head->dev;
126         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
127         drm_i810_private_t *dev_priv = dev->dev_private;
128         const struct file_operations *old_fops;
129         int retcode = 0;
130
131         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
132                 return -EINVAL;
133
134         down_write(&current->mm->mmap_sem);
135         old_fops = file_priv->filp->f_op;
136         file_priv->filp->f_op = &i810_buffer_fops;
137         dev_priv->mmap_buffer = buf;
138         buf_priv->virtual = (void *)do_mmap(file_priv->filp, 0, buf->total,
139                                             PROT_READ | PROT_WRITE,
140                                             MAP_SHARED, buf->bus_address);
141         dev_priv->mmap_buffer = NULL;
142         file_priv->filp->f_op = old_fops;
143         if (IS_ERR(buf_priv->virtual)) {
144                 /* Real error */
145                 DRM_ERROR("mmap error\n");
146                 retcode = PTR_ERR(buf_priv->virtual);
147                 buf_priv->virtual = NULL;
148         }
149         up_write(&current->mm->mmap_sem);
150
151         return retcode;
152 }
153
154 static int i810_unmap_buffer(struct drm_buf * buf)
155 {
156         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
157         int retcode = 0;
158
159         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
160                 return -EINVAL;
161
162         down_write(&current->mm->mmap_sem);
163         retcode = do_munmap(current->mm,
164                             (unsigned long)buf_priv->virtual,
165                             (size_t) buf->total);
166         up_write(&current->mm->mmap_sem);
167
168         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
169         buf_priv->virtual = NULL;
170
171         return retcode;
172 }
173
174 static int i810_dma_get_buffer(struct drm_device * dev, drm_i810_dma_t * d,
175                                struct drm_file *file_priv)
176 {
177         struct drm_buf *buf;
178         drm_i810_buf_priv_t *buf_priv;
179         int retcode = 0;
180
181         buf = i810_freelist_get(dev);
182         if (!buf) {
183                 retcode = -ENOMEM;
184                 DRM_DEBUG("retcode=%d\n", retcode);
185                 return retcode;
186         }
187
188         retcode = i810_map_buffer(buf, file_priv);
189         if (retcode) {
190                 i810_freelist_put(dev, buf);
191                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
192                 return retcode;
193         }
194         buf->file_priv = file_priv;
195         buf_priv = buf->dev_private;
196         d->granted = 1;
197         d->request_idx = buf->idx;
198         d->request_size = buf->total;
199         d->virtual = buf_priv->virtual;
200
201         return retcode;
202 }
203
204 static int i810_dma_cleanup(struct drm_device * dev)
205 {
206         struct drm_device_dma *dma = dev->dma;
207
208         /* Make sure interrupts are disabled here because the uninstall ioctl
209          * may not have been called from userspace and after dev_private
210          * is freed, it's too late.
211          */
212         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
213                 drm_irq_uninstall(dev);
214
215         if (dev->dev_private) {
216                 int i;
217                 drm_i810_private_t *dev_priv =
218                     (drm_i810_private_t *) dev->dev_private;
219
220                 if (dev_priv->ring.virtual_start) {
221                         drm_core_ioremapfree(&dev_priv->ring.map, dev);
222                 }
223                 if (dev_priv->hw_status_page) {
224                         pci_free_consistent(dev->pdev, PAGE_SIZE,
225                                             dev_priv->hw_status_page,
226                                             dev_priv->dma_status_page);
227                         /* Need to rewrite hardware status page */
228                         I810_WRITE(0x02080, 0x1ffff000);
229                 }
230                 drm_free(dev->dev_private, sizeof(drm_i810_private_t),
231                          DRM_MEM_DRIVER);
232                 dev->dev_private = NULL;
233
234                 for (i = 0; i < dma->buf_count; i++) {
235                         struct drm_buf *buf = dma->buflist[i];
236                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
237
238                         if (buf_priv->kernel_virtual && buf->total)
239                                 drm_core_ioremapfree(&buf_priv->map, dev);
240                 }
241         }
242         return 0;
243 }
244
245 static int i810_wait_ring(struct drm_device * dev, int n)
246 {
247         drm_i810_private_t *dev_priv = dev->dev_private;
248         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
249         int iters = 0;
250         unsigned long end;
251         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
252
253         end = jiffies + (HZ * 3);
254         while (ring->space < n) {
255                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
256                 ring->space = ring->head - (ring->tail + 8);
257                 if (ring->space < 0)
258                         ring->space += ring->Size;
259
260                 if (ring->head != last_head) {
261                         end = jiffies + (HZ * 3);
262                         last_head = ring->head;
263                 }
264
265                 iters++;
266                 if (time_before(end, jiffies)) {
267                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
268                         DRM_ERROR("lockup\n");
269                         goto out_wait_ring;
270                 }
271                 udelay(1);
272         }
273
274       out_wait_ring:
275         return iters;
276 }
277
278 static void i810_kernel_lost_context(struct drm_device * dev)
279 {
280         drm_i810_private_t *dev_priv = dev->dev_private;
281         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
282
283         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
284         ring->tail = I810_READ(LP_RING + RING_TAIL);
285         ring->space = ring->head - (ring->tail + 8);
286         if (ring->space < 0)
287                 ring->space += ring->Size;
288 }
289
290 static int i810_freelist_init(struct drm_device * dev, drm_i810_private_t * dev_priv)
291 {
292         struct drm_device_dma *dma = dev->dma;
293         int my_idx = 24;
294         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
295         int i;
296
297         if (dma->buf_count > 1019) {
298                 /* Not enough space in the status page for the freelist */
299                 return -EINVAL;
300         }
301
302         for (i = 0; i < dma->buf_count; i++) {
303                 struct drm_buf *buf = dma->buflist[i];
304                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
305
306                 buf_priv->in_use = hw_status++;
307                 buf_priv->my_use_idx = my_idx;
308                 my_idx += 4;
309
310                 *buf_priv->in_use = I810_BUF_FREE;
311
312                 buf_priv->map.offset = buf->bus_address;
313                 buf_priv->map.size = buf->total;
314                 buf_priv->map.type = _DRM_AGP;
315                 buf_priv->map.flags = 0;
316                 buf_priv->map.mtrr = 0;
317
318                 drm_core_ioremap(&buf_priv->map, dev);
319                 buf_priv->kernel_virtual = buf_priv->map.handle;
320
321         }
322         return 0;
323 }
324
325 static int i810_dma_initialize(struct drm_device * dev,
326                                drm_i810_private_t * dev_priv,
327                                drm_i810_init_t * init)
328 {
329         struct drm_map_list *r_list;
330         memset(dev_priv, 0, sizeof(drm_i810_private_t));
331
332         list_for_each_entry(r_list, &dev->maplist, head) {
333                 if (r_list->map &&
334                     r_list->map->type == _DRM_SHM &&
335                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
336                         dev_priv->sarea_map = r_list->map;
337                         break;
338                 }
339         }
340         if (!dev_priv->sarea_map) {
341                 dev->dev_private = (void *)dev_priv;
342                 i810_dma_cleanup(dev);
343                 DRM_ERROR("can not find sarea!\n");
344                 return -EINVAL;
345         }
346         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
347         if (!dev_priv->mmio_map) {
348                 dev->dev_private = (void *)dev_priv;
349                 i810_dma_cleanup(dev);
350                 DRM_ERROR("can not find mmio map!\n");
351                 return -EINVAL;
352         }
353         dev->agp_buffer_token = init->buffers_offset;
354         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
355         if (!dev->agp_buffer_map) {
356                 dev->dev_private = (void *)dev_priv;
357                 i810_dma_cleanup(dev);
358                 DRM_ERROR("can not find dma buffer map!\n");
359                 return -EINVAL;
360         }
361
362         dev_priv->sarea_priv = (drm_i810_sarea_t *)
363             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
364
365         dev_priv->ring.Start = init->ring_start;
366         dev_priv->ring.End = init->ring_end;
367         dev_priv->ring.Size = init->ring_size;
368
369         dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
370         dev_priv->ring.map.size = init->ring_size;
371         dev_priv->ring.map.type = _DRM_AGP;
372         dev_priv->ring.map.flags = 0;
373         dev_priv->ring.map.mtrr = 0;
374
375         drm_core_ioremap(&dev_priv->ring.map, dev);
376
377         if (dev_priv->ring.map.handle == NULL) {
378                 dev->dev_private = (void *)dev_priv;
379                 i810_dma_cleanup(dev);
380                 DRM_ERROR("can not ioremap virtual address for"
381                           " ring buffer\n");
382                 return -ENOMEM;
383         }
384
385         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
386
387         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
388
389         dev_priv->w = init->w;
390         dev_priv->h = init->h;
391         dev_priv->pitch = init->pitch;
392         dev_priv->back_offset = init->back_offset;
393         dev_priv->depth_offset = init->depth_offset;
394         dev_priv->front_offset = init->front_offset;
395
396         dev_priv->overlay_offset = init->overlay_offset;
397         dev_priv->overlay_physical = init->overlay_physical;
398
399         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
400         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
401         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
402
403         /* Program Hardware Status Page */
404         dev_priv->hw_status_page =
405             pci_alloc_consistent(dev->pdev, PAGE_SIZE,
406                                  &dev_priv->dma_status_page);
407         if (!dev_priv->hw_status_page) {
408                 dev->dev_private = (void *)dev_priv;
409                 i810_dma_cleanup(dev);
410                 DRM_ERROR("Can not allocate hardware status page\n");
411                 return -ENOMEM;
412         }
413         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
414         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
415
416         I810_WRITE(0x02080, dev_priv->dma_status_page);
417         DRM_DEBUG("Enabled hardware status page\n");
418
419         /* Now we need to init our freelist */
420         if (i810_freelist_init(dev, dev_priv) != 0) {
421                 dev->dev_private = (void *)dev_priv;
422                 i810_dma_cleanup(dev);
423                 DRM_ERROR("Not enough space in the status page for"
424                           " the freelist\n");
425                 return -ENOMEM;
426         }
427         dev->dev_private = (void *)dev_priv;
428
429         return 0;
430 }
431
432 static int i810_dma_init(struct drm_device *dev, void *data,
433                          struct drm_file *file_priv)
434 {
435         drm_i810_private_t *dev_priv;
436         drm_i810_init_t *init = data;
437         int retcode = 0;
438
439         switch (init->func) {
440         case I810_INIT_DMA_1_4:
441                 DRM_INFO("Using v1.4 init.\n");
442                 dev_priv = drm_alloc(sizeof(drm_i810_private_t),
443                                      DRM_MEM_DRIVER);
444                 if (dev_priv == NULL)
445                         return -ENOMEM;
446                 retcode = i810_dma_initialize(dev, dev_priv, init);
447                 break;
448
449         case I810_CLEANUP_DMA:
450                 DRM_INFO("DMA Cleanup\n");
451                 retcode = i810_dma_cleanup(dev);
452                 break;
453         default:
454                 return -EINVAL;
455         }
456
457         return retcode;
458 }
459
460 /* Most efficient way to verify state for the i810 is as it is
461  * emitted.  Non-conformant state is silently dropped.
462  *
463  * Use 'volatile' & local var tmp to force the emitted values to be
464  * identical to the verified ones.
465  */
466 static void i810EmitContextVerified(struct drm_device * dev,
467                                     volatile unsigned int *code)
468 {
469         drm_i810_private_t *dev_priv = dev->dev_private;
470         int i, j = 0;
471         unsigned int tmp;
472         RING_LOCALS;
473
474         BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
475
476         OUT_RING(GFX_OP_COLOR_FACTOR);
477         OUT_RING(code[I810_CTXREG_CF1]);
478
479         OUT_RING(GFX_OP_STIPPLE);
480         OUT_RING(code[I810_CTXREG_ST1]);
481
482         for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
483                 tmp = code[i];
484
485                 if ((tmp & (7 << 29)) == (3 << 29) &&
486                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
487                         OUT_RING(tmp);
488                         j++;
489                 } else
490                         printk("constext state dropped!!!\n");
491         }
492
493         if (j & 1)
494                 OUT_RING(0);
495
496         ADVANCE_LP_RING();
497 }
498
499 static void i810EmitTexVerified(struct drm_device * dev, volatile unsigned int *code)
500 {
501         drm_i810_private_t *dev_priv = dev->dev_private;
502         int i, j = 0;
503         unsigned int tmp;
504         RING_LOCALS;
505
506         BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
507
508         OUT_RING(GFX_OP_MAP_INFO);
509         OUT_RING(code[I810_TEXREG_MI1]);
510         OUT_RING(code[I810_TEXREG_MI2]);
511         OUT_RING(code[I810_TEXREG_MI3]);
512
513         for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
514                 tmp = code[i];
515
516                 if ((tmp & (7 << 29)) == (3 << 29) &&
517                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
518                         OUT_RING(tmp);
519                         j++;
520                 } else
521                         printk("texture state dropped!!!\n");
522         }
523
524         if (j & 1)
525                 OUT_RING(0);
526
527         ADVANCE_LP_RING();
528 }
529
530 /* Need to do some additional checking when setting the dest buffer.
531  */
532 static void i810EmitDestVerified(struct drm_device * dev,
533                                  volatile unsigned int *code)
534 {
535         drm_i810_private_t *dev_priv = dev->dev_private;
536         unsigned int tmp;
537         RING_LOCALS;
538
539         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
540
541         tmp = code[I810_DESTREG_DI1];
542         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
543                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
544                 OUT_RING(tmp);
545         } else
546                 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
547                           tmp, dev_priv->front_di1, dev_priv->back_di1);
548
549         /* invarient:
550          */
551         OUT_RING(CMD_OP_Z_BUFFER_INFO);
552         OUT_RING(dev_priv->zi1);
553
554         OUT_RING(GFX_OP_DESTBUFFER_VARS);
555         OUT_RING(code[I810_DESTREG_DV1]);
556
557         OUT_RING(GFX_OP_DRAWRECT_INFO);
558         OUT_RING(code[I810_DESTREG_DR1]);
559         OUT_RING(code[I810_DESTREG_DR2]);
560         OUT_RING(code[I810_DESTREG_DR3]);
561         OUT_RING(code[I810_DESTREG_DR4]);
562         OUT_RING(0);
563
564         ADVANCE_LP_RING();
565 }
566
567 static void i810EmitState(struct drm_device * dev)
568 {
569         drm_i810_private_t *dev_priv = dev->dev_private;
570         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
571         unsigned int dirty = sarea_priv->dirty;
572
573         DRM_DEBUG("%x\n", dirty);
574
575         if (dirty & I810_UPLOAD_BUFFERS) {
576                 i810EmitDestVerified(dev, sarea_priv->BufferState);
577                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
578         }
579
580         if (dirty & I810_UPLOAD_CTX) {
581                 i810EmitContextVerified(dev, sarea_priv->ContextState);
582                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
583         }
584
585         if (dirty & I810_UPLOAD_TEX0) {
586                 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
587                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
588         }
589
590         if (dirty & I810_UPLOAD_TEX1) {
591                 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
592                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
593         }
594 }
595
596 /* need to verify
597  */
598 static void i810_dma_dispatch_clear(struct drm_device * dev, int flags,
599                                     unsigned int clear_color,
600                                     unsigned int clear_zval)
601 {
602         drm_i810_private_t *dev_priv = dev->dev_private;
603         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
604         int nbox = sarea_priv->nbox;
605         struct drm_clip_rect *pbox = sarea_priv->boxes;
606         int pitch = dev_priv->pitch;
607         int cpp = 2;
608         int i;
609         RING_LOCALS;
610
611         if (dev_priv->current_page == 1) {
612                 unsigned int tmp = flags;
613
614                 flags &= ~(I810_FRONT | I810_BACK);
615                 if (tmp & I810_FRONT)
616                         flags |= I810_BACK;
617                 if (tmp & I810_BACK)
618                         flags |= I810_FRONT;
619         }
620
621         i810_kernel_lost_context(dev);
622
623         if (nbox > I810_NR_SAREA_CLIPRECTS)
624                 nbox = I810_NR_SAREA_CLIPRECTS;
625
626         for (i = 0; i < nbox; i++, pbox++) {
627                 unsigned int x = pbox->x1;
628                 unsigned int y = pbox->y1;
629                 unsigned int width = (pbox->x2 - x) * cpp;
630                 unsigned int height = pbox->y2 - y;
631                 unsigned int start = y * pitch + x * cpp;
632
633                 if (pbox->x1 > pbox->x2 ||
634                     pbox->y1 > pbox->y2 ||
635                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
636                         continue;
637
638                 if (flags & I810_FRONT) {
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(start);
644                         OUT_RING(clear_color);
645                         OUT_RING(0);
646                         ADVANCE_LP_RING();
647                 }
648
649                 if (flags & I810_BACK) {
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->back_offset + start);
655                         OUT_RING(clear_color);
656                         OUT_RING(0);
657                         ADVANCE_LP_RING();
658                 }
659
660                 if (flags & I810_DEPTH) {
661                         BEGIN_LP_RING(6);
662                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
663                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
664                         OUT_RING((height << 16) | width);
665                         OUT_RING(dev_priv->depth_offset + start);
666                         OUT_RING(clear_zval);
667                         OUT_RING(0);
668                         ADVANCE_LP_RING();
669                 }
670         }
671 }
672
673 static void i810_dma_dispatch_swap(struct drm_device * dev)
674 {
675         drm_i810_private_t *dev_priv = dev->dev_private;
676         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
677         int nbox = sarea_priv->nbox;
678         struct drm_clip_rect *pbox = sarea_priv->boxes;
679         int pitch = dev_priv->pitch;
680         int cpp = 2;
681         int i;
682         RING_LOCALS;
683
684         DRM_DEBUG("swapbuffers\n");
685
686         i810_kernel_lost_context(dev);
687
688         if (nbox > I810_NR_SAREA_CLIPRECTS)
689                 nbox = I810_NR_SAREA_CLIPRECTS;
690
691         for (i = 0; i < nbox; i++, pbox++) {
692                 unsigned int w = pbox->x2 - pbox->x1;
693                 unsigned int h = pbox->y2 - pbox->y1;
694                 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
695                 unsigned int start = dst;
696
697                 if (pbox->x1 > pbox->x2 ||
698                     pbox->y1 > pbox->y2 ||
699                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
700                         continue;
701
702                 BEGIN_LP_RING(6);
703                 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
704                 OUT_RING(pitch | (0xCC << 16));
705                 OUT_RING((h << 16) | (w * cpp));
706                 if (dev_priv->current_page == 0)
707                         OUT_RING(dev_priv->front_offset + start);
708                 else
709                         OUT_RING(dev_priv->back_offset + start);
710                 OUT_RING(pitch);
711                 if (dev_priv->current_page == 0)
712                         OUT_RING(dev_priv->back_offset + start);
713                 else
714                         OUT_RING(dev_priv->front_offset + start);
715                 ADVANCE_LP_RING();
716         }
717 }
718
719 static void i810_dma_dispatch_vertex(struct drm_device * dev,
720                                      struct drm_buf * buf, int discard, int used)
721 {
722         drm_i810_private_t *dev_priv = dev->dev_private;
723         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
724         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
725         struct drm_clip_rect *box = sarea_priv->boxes;
726         int nbox = sarea_priv->nbox;
727         unsigned long address = (unsigned long)buf->bus_address;
728         unsigned long start = address - dev->agp->base;
729         int i = 0;
730         RING_LOCALS;
731
732         i810_kernel_lost_context(dev);
733
734         if (nbox > I810_NR_SAREA_CLIPRECTS)
735                 nbox = I810_NR_SAREA_CLIPRECTS;
736
737         if (used > 4 * 1024)
738                 used = 0;
739
740         if (sarea_priv->dirty)
741                 i810EmitState(dev);
742
743         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
744                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
745
746                 *(u32 *) buf_priv->kernel_virtual =
747                     ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
748
749                 if (used & 4) {
750                         *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
751                         used += 4;
752                 }
753
754                 i810_unmap_buffer(buf);
755         }
756
757         if (used) {
758                 do {
759                         if (i < nbox) {
760                                 BEGIN_LP_RING(4);
761                                 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
762                                          SC_ENABLE);
763                                 OUT_RING(GFX_OP_SCISSOR_INFO);
764                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
765                                 OUT_RING((box[i].x2 -
766                                           1) | ((box[i].y2 - 1) << 16));
767                                 ADVANCE_LP_RING();
768                         }
769
770                         BEGIN_LP_RING(4);
771                         OUT_RING(CMD_OP_BATCH_BUFFER);
772                         OUT_RING(start | BB1_PROTECTED);
773                         OUT_RING(start + used - 4);
774                         OUT_RING(0);
775                         ADVANCE_LP_RING();
776
777                 } while (++i < nbox);
778         }
779
780         if (discard) {
781                 dev_priv->counter++;
782
783                 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
784                               I810_BUF_HARDWARE);
785
786                 BEGIN_LP_RING(8);
787                 OUT_RING(CMD_STORE_DWORD_IDX);
788                 OUT_RING(20);
789                 OUT_RING(dev_priv->counter);
790                 OUT_RING(CMD_STORE_DWORD_IDX);
791                 OUT_RING(buf_priv->my_use_idx);
792                 OUT_RING(I810_BUF_FREE);
793                 OUT_RING(CMD_REPORT_HEAD);
794                 OUT_RING(0);
795                 ADVANCE_LP_RING();
796         }
797 }
798
799 static void i810_dma_dispatch_flip(struct drm_device * dev)
800 {
801         drm_i810_private_t *dev_priv = dev->dev_private;
802         int pitch = dev_priv->pitch;
803         RING_LOCALS;
804
805         DRM_DEBUG("page=%d pfCurrentPage=%d\n",
806                   dev_priv->current_page,
807                   dev_priv->sarea_priv->pf_current_page);
808
809         i810_kernel_lost_context(dev);
810
811         BEGIN_LP_RING(2);
812         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
813         OUT_RING(0);
814         ADVANCE_LP_RING();
815
816         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
817         /* On i815 at least ASYNC is buggy */
818         /* pitch<<5 is from 11.2.8 p158,
819            its the pitch / 8 then left shifted 8,
820            so (pitch >> 3) << 8 */
821         OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
822         if (dev_priv->current_page == 0) {
823                 OUT_RING(dev_priv->back_offset);
824                 dev_priv->current_page = 1;
825         } else {
826                 OUT_RING(dev_priv->front_offset);
827                 dev_priv->current_page = 0;
828         }
829         OUT_RING(0);
830         ADVANCE_LP_RING();
831
832         BEGIN_LP_RING(2);
833         OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
834         OUT_RING(0);
835         ADVANCE_LP_RING();
836
837         /* Increment the frame counter.  The client-side 3D driver must
838          * throttle the framerate by waiting for this value before
839          * performing the swapbuffer ioctl.
840          */
841         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
842
843 }
844
845 static void i810_dma_quiescent(struct drm_device * dev)
846 {
847         drm_i810_private_t *dev_priv = dev->dev_private;
848         RING_LOCALS;
849
850         i810_kernel_lost_context(dev);
851
852         BEGIN_LP_RING(4);
853         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
854         OUT_RING(CMD_REPORT_HEAD);
855         OUT_RING(0);
856         OUT_RING(0);
857         ADVANCE_LP_RING();
858
859         i810_wait_ring(dev, dev_priv->ring.Size - 8);
860 }
861
862 static int i810_flush_queue(struct drm_device * dev)
863 {
864         drm_i810_private_t *dev_priv = dev->dev_private;
865         struct drm_device_dma *dma = dev->dma;
866         int i, ret = 0;
867         RING_LOCALS;
868
869         i810_kernel_lost_context(dev);
870
871         BEGIN_LP_RING(2);
872         OUT_RING(CMD_REPORT_HEAD);
873         OUT_RING(0);
874         ADVANCE_LP_RING();
875
876         i810_wait_ring(dev, dev_priv->ring.Size - 8);
877
878         for (i = 0; i < dma->buf_count; i++) {
879                 struct drm_buf *buf = dma->buflist[i];
880                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
881
882                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
883                                    I810_BUF_FREE);
884
885                 if (used == I810_BUF_HARDWARE)
886                         DRM_DEBUG("reclaimed from HARDWARE\n");
887                 if (used == I810_BUF_CLIENT)
888                         DRM_DEBUG("still on client\n");
889         }
890
891         return ret;
892 }
893
894 /* Must be called with the lock held */
895 static void i810_reclaim_buffers(struct drm_device * dev,
896                                  struct drm_file *file_priv)
897 {
898         struct drm_device_dma *dma = dev->dma;
899         int i;
900
901         if (!dma)
902                 return;
903         if (!dev->dev_private)
904                 return;
905         if (!dma->buflist)
906                 return;
907
908         i810_flush_queue(dev);
909
910         for (i = 0; i < dma->buf_count; i++) {
911                 struct drm_buf *buf = dma->buflist[i];
912                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
913
914                 if (buf->file_priv == file_priv && buf_priv) {
915                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
916                                            I810_BUF_FREE);
917
918                         if (used == I810_BUF_CLIENT)
919                                 DRM_DEBUG("reclaimed from client\n");
920                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
921                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
922                 }
923         }
924 }
925
926 static int i810_flush_ioctl(struct drm_device *dev, void *data,
927                             struct drm_file *file_priv)
928 {
929         LOCK_TEST_WITH_RETURN(dev, file_priv);
930
931         i810_flush_queue(dev);
932         return 0;
933 }
934
935 static int i810_dma_vertex(struct drm_device *dev, void *data,
936                            struct drm_file *file_priv)
937 {
938         struct drm_device_dma *dma = dev->dma;
939         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
940         u32 *hw_status = dev_priv->hw_status_page;
941         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
942             dev_priv->sarea_priv;
943         drm_i810_vertex_t *vertex = data;
944
945         LOCK_TEST_WITH_RETURN(dev, file_priv);
946
947         DRM_DEBUG("idx %d used %d discard %d\n",
948                   vertex->idx, vertex->used, vertex->discard);
949
950         if (vertex->idx < 0 || vertex->idx > dma->buf_count)
951                 return -EINVAL;
952
953         i810_dma_dispatch_vertex(dev,
954                                  dma->buflist[vertex->idx],
955                                  vertex->discard, vertex->used);
956
957         atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
958         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
959         sarea_priv->last_enqueue = dev_priv->counter - 1;
960         sarea_priv->last_dispatch = (int)hw_status[5];
961
962         return 0;
963 }
964
965 static int i810_clear_bufs(struct drm_device *dev, void *data,
966                            struct drm_file *file_priv)
967 {
968         drm_i810_clear_t *clear = data;
969
970         LOCK_TEST_WITH_RETURN(dev, file_priv);
971
972         /* GH: Someone's doing nasty things... */
973         if (!dev->dev_private) {
974                 return -EINVAL;
975         }
976
977         i810_dma_dispatch_clear(dev, clear->flags,
978                                 clear->clear_color, clear->clear_depth);
979         return 0;
980 }
981
982 static int i810_swap_bufs(struct drm_device *dev, void *data,
983                           struct drm_file *file_priv)
984 {
985         DRM_DEBUG("\n");
986
987         LOCK_TEST_WITH_RETURN(dev, file_priv);
988
989         i810_dma_dispatch_swap(dev);
990         return 0;
991 }
992
993 static int i810_getage(struct drm_device *dev, void *data,
994                        struct drm_file *file_priv)
995 {
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         sarea_priv->last_dispatch = (int)hw_status[5];
1002         return 0;
1003 }
1004
1005 static int i810_getbuf(struct drm_device *dev, void *data,
1006                        struct drm_file *file_priv)
1007 {
1008         int retcode = 0;
1009         drm_i810_dma_t *d = data;
1010         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1011         u32 *hw_status = dev_priv->hw_status_page;
1012         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1013             dev_priv->sarea_priv;
1014
1015         LOCK_TEST_WITH_RETURN(dev, file_priv);
1016
1017         d->granted = 0;
1018
1019         retcode = i810_dma_get_buffer(dev, d, file_priv);
1020
1021         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1022                   task_pid_nr(current), retcode, d->granted);
1023
1024         sarea_priv->last_dispatch = (int)hw_status[5];
1025
1026         return retcode;
1027 }
1028
1029 static int i810_copybuf(struct drm_device *dev, void *data,
1030                         struct drm_file *file_priv)
1031 {
1032         /* Never copy - 2.4.x doesn't need it */
1033         return 0;
1034 }
1035
1036 static int i810_docopy(struct drm_device *dev, void *data,
1037                         struct drm_file *file_priv)
1038 {
1039         /* Never copy - 2.4.x doesn't need it */
1040         return 0;
1041 }
1042
1043 static void i810_dma_dispatch_mc(struct drm_device * dev, struct drm_buf * buf, int used,
1044                                  unsigned int last_render)
1045 {
1046         drm_i810_private_t *dev_priv = dev->dev_private;
1047         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1048         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1049         unsigned long address = (unsigned long)buf->bus_address;
1050         unsigned long start = address - dev->agp->base;
1051         int u;
1052         RING_LOCALS;
1053
1054         i810_kernel_lost_context(dev);
1055
1056         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1057         if (u != I810_BUF_CLIENT) {
1058                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1059         }
1060
1061         if (used > 4 * 1024)
1062                 used = 0;
1063
1064         sarea_priv->dirty = 0x7f;
1065
1066         DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1067
1068         dev_priv->counter++;
1069         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1070         DRM_DEBUG("start : %lx\n", start);
1071         DRM_DEBUG("used : %d\n", used);
1072         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1073
1074         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1075                 if (used & 4) {
1076                         *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1077                         used += 4;
1078                 }
1079
1080                 i810_unmap_buffer(buf);
1081         }
1082         BEGIN_LP_RING(4);
1083         OUT_RING(CMD_OP_BATCH_BUFFER);
1084         OUT_RING(start | BB1_PROTECTED);
1085         OUT_RING(start + used - 4);
1086         OUT_RING(0);
1087         ADVANCE_LP_RING();
1088
1089         BEGIN_LP_RING(8);
1090         OUT_RING(CMD_STORE_DWORD_IDX);
1091         OUT_RING(buf_priv->my_use_idx);
1092         OUT_RING(I810_BUF_FREE);
1093         OUT_RING(0);
1094
1095         OUT_RING(CMD_STORE_DWORD_IDX);
1096         OUT_RING(16);
1097         OUT_RING(last_render);
1098         OUT_RING(0);
1099         ADVANCE_LP_RING();
1100 }
1101
1102 static int i810_dma_mc(struct drm_device *dev, void *data,
1103                        struct drm_file *file_priv)
1104 {
1105         struct drm_device_dma *dma = dev->dma;
1106         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1107         u32 *hw_status = dev_priv->hw_status_page;
1108         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1109             dev_priv->sarea_priv;
1110         drm_i810_mc_t *mc = data;
1111
1112         LOCK_TEST_WITH_RETURN(dev, file_priv);
1113
1114         if (mc->idx >= dma->buf_count || mc->idx < 0)
1115                 return -EINVAL;
1116
1117         i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1118                              mc->last_render);
1119
1120         atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
1121         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1122         sarea_priv->last_enqueue = dev_priv->counter - 1;
1123         sarea_priv->last_dispatch = (int)hw_status[5];
1124
1125         return 0;
1126 }
1127
1128 static int i810_rstatus(struct drm_device *dev, void *data,
1129                         struct drm_file *file_priv)
1130 {
1131         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1132
1133         return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1134 }
1135
1136 static int i810_ov0_info(struct drm_device *dev, void *data,
1137                          struct drm_file *file_priv)
1138 {
1139         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1140         drm_i810_overlay_t *ov = data;
1141
1142         ov->offset = dev_priv->overlay_offset;
1143         ov->physical = dev_priv->overlay_physical;
1144
1145         return 0;
1146 }
1147
1148 static int i810_fstatus(struct drm_device *dev, void *data,
1149                         struct drm_file *file_priv)
1150 {
1151         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1152
1153         LOCK_TEST_WITH_RETURN(dev, file_priv);
1154         return I810_READ(0x30008);
1155 }
1156
1157 static int i810_ov0_flip(struct drm_device *dev, void *data,
1158                          struct drm_file *file_priv)
1159 {
1160         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1161
1162         LOCK_TEST_WITH_RETURN(dev, file_priv);
1163
1164         //Tell the overlay to update
1165         I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1166
1167         return 0;
1168 }
1169
1170 /* Not sure why this isn't set all the time:
1171  */
1172 static void i810_do_init_pageflip(struct drm_device * dev)
1173 {
1174         drm_i810_private_t *dev_priv = dev->dev_private;
1175
1176         DRM_DEBUG("\n");
1177         dev_priv->page_flipping = 1;
1178         dev_priv->current_page = 0;
1179         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1180 }
1181
1182 static int i810_do_cleanup_pageflip(struct drm_device * dev)
1183 {
1184         drm_i810_private_t *dev_priv = dev->dev_private;
1185
1186         DRM_DEBUG("\n");
1187         if (dev_priv->current_page != 0)
1188                 i810_dma_dispatch_flip(dev);
1189
1190         dev_priv->page_flipping = 0;
1191         return 0;
1192 }
1193
1194 static int i810_flip_bufs(struct drm_device *dev, void *data,
1195                           struct drm_file *file_priv)
1196 {
1197         drm_i810_private_t *dev_priv = dev->dev_private;
1198
1199         DRM_DEBUG("\n");
1200
1201         LOCK_TEST_WITH_RETURN(dev, file_priv);
1202
1203         if (!dev_priv->page_flipping)
1204                 i810_do_init_pageflip(dev);
1205
1206         i810_dma_dispatch_flip(dev);
1207         return 0;
1208 }
1209
1210 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1211 {
1212         /* i810 has 4 more counters */
1213         dev->counters += 4;
1214         dev->types[6] = _DRM_STAT_IRQ;
1215         dev->types[7] = _DRM_STAT_PRIMARY;
1216         dev->types[8] = _DRM_STAT_SECONDARY;
1217         dev->types[9] = _DRM_STAT_DMA;
1218
1219         return 0;
1220 }
1221
1222 void i810_driver_lastclose(struct drm_device * dev)
1223 {
1224         i810_dma_cleanup(dev);
1225 }
1226
1227 void i810_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1228 {
1229         if (dev->dev_private) {
1230                 drm_i810_private_t *dev_priv = dev->dev_private;
1231                 if (dev_priv->page_flipping) {
1232                         i810_do_cleanup_pageflip(dev);
1233                 }
1234         }
1235 }
1236
1237 void i810_driver_reclaim_buffers_locked(struct drm_device * dev,
1238                                         struct drm_file *file_priv)
1239 {
1240         i810_reclaim_buffers(dev, file_priv);
1241 }
1242
1243 int i810_driver_dma_quiescent(struct drm_device * dev)
1244 {
1245         i810_dma_quiescent(dev);
1246         return 0;
1247 }
1248
1249 struct drm_ioctl_desc i810_ioctls[] = {
1250         DRM_IOCTL_DEF(DRM_I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1251         DRM_IOCTL_DEF(DRM_I810_VERTEX, i810_dma_vertex, DRM_AUTH),
1252         DRM_IOCTL_DEF(DRM_I810_CLEAR, i810_clear_bufs, DRM_AUTH),
1253         DRM_IOCTL_DEF(DRM_I810_FLUSH, i810_flush_ioctl, DRM_AUTH),
1254         DRM_IOCTL_DEF(DRM_I810_GETAGE, i810_getage, DRM_AUTH),
1255         DRM_IOCTL_DEF(DRM_I810_GETBUF, i810_getbuf, DRM_AUTH),
1256         DRM_IOCTL_DEF(DRM_I810_SWAP, i810_swap_bufs, DRM_AUTH),
1257         DRM_IOCTL_DEF(DRM_I810_COPY, i810_copybuf, DRM_AUTH),
1258         DRM_IOCTL_DEF(DRM_I810_DOCOPY, i810_docopy, DRM_AUTH),
1259         DRM_IOCTL_DEF(DRM_I810_OV0INFO, i810_ov0_info, DRM_AUTH),
1260         DRM_IOCTL_DEF(DRM_I810_FSTATUS, i810_fstatus, DRM_AUTH),
1261         DRM_IOCTL_DEF(DRM_I810_OV0FLIP, i810_ov0_flip, DRM_AUTH),
1262         DRM_IOCTL_DEF(DRM_I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1263         DRM_IOCTL_DEF(DRM_I810_RSTATUS, i810_rstatus, DRM_AUTH),
1264         DRM_IOCTL_DEF(DRM_I810_FLIP, i810_flip_bufs, DRM_AUTH)
1265 };
1266
1267 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1268
1269 /**
1270  * Determine if the device really is AGP or not.
1271  *
1272  * All Intel graphics chipsets are treated as AGP, even if they are really
1273  * PCI-e.
1274  *
1275  * \param dev   The device to be tested.
1276  *
1277  * \returns
1278  * A value of 1 is always retured to indictate every i810 is AGP.
1279  */
1280 int i810_driver_device_is_agp(struct drm_device * dev)
1281 {
1282         return 1;
1283 }