Auto-update from upstream
[linux-2.6] / drivers / char / drm / i810_dma.c
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 drm_buf_t *i810_freelist_get(drm_device_t * dev)
49 {
50         drm_device_dma_t *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                 drm_buf_t *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(drm_device_t * dev, drm_buf_t * 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         drm_file_t *priv = filp->private_data;
91         drm_device_t *dev;
92         drm_i810_private_t *dev_priv;
93         drm_buf_t *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                                VM_OFFSET(vma) >> PAGE_SHIFT,
110                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
111                 return -EAGAIN;
112         return 0;
113 }
114
115 static struct file_operations i810_buffer_fops = {
116         .open = drm_open,
117         .flush = drm_flush,
118         .release = drm_release,
119         .ioctl = drm_ioctl,
120         .mmap = i810_mmap_buffers,
121         .fasync = drm_fasync,
122 };
123
124 static int i810_map_buffer(drm_buf_t * buf, struct file *filp)
125 {
126         drm_file_t *priv = filp->private_data;
127         drm_device_t *dev = priv->head->dev;
128         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
129         drm_i810_private_t *dev_priv = dev->dev_private;
130         struct file_operations *old_fops;
131         int retcode = 0;
132
133         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
134                 return -EINVAL;
135
136         down_write(&current->mm->mmap_sem);
137         old_fops = filp->f_op;
138         filp->f_op = &i810_buffer_fops;
139         dev_priv->mmap_buffer = buf;
140         buf_priv->virtual = (void *)do_mmap(filp, 0, buf->total,
141                                             PROT_READ | PROT_WRITE,
142                                             MAP_SHARED, buf->bus_address);
143         dev_priv->mmap_buffer = NULL;
144         filp->f_op = old_fops;
145         if ((unsigned long)buf_priv->virtual > -1024UL) {
146                 /* Real error */
147                 DRM_ERROR("mmap error\n");
148                 retcode = (signed int)buf_priv->virtual;
149                 buf_priv->virtual = NULL;
150         }
151         up_write(&current->mm->mmap_sem);
152
153         return retcode;
154 }
155
156 static int i810_unmap_buffer(drm_buf_t * buf)
157 {
158         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
159         int retcode = 0;
160
161         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
162                 return -EINVAL;
163
164         down_write(&current->mm->mmap_sem);
165         retcode = do_munmap(current->mm,
166                             (unsigned long)buf_priv->virtual,
167                             (size_t) buf->total);
168         up_write(&current->mm->mmap_sem);
169
170         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
171         buf_priv->virtual = NULL;
172
173         return retcode;
174 }
175
176 static int i810_dma_get_buffer(drm_device_t * dev, drm_i810_dma_t * d,
177                                struct file *filp)
178 {
179         drm_buf_t *buf;
180         drm_i810_buf_priv_t *buf_priv;
181         int retcode = 0;
182
183         buf = i810_freelist_get(dev);
184         if (!buf) {
185                 retcode = -ENOMEM;
186                 DRM_DEBUG("retcode=%d\n", retcode);
187                 return retcode;
188         }
189
190         retcode = i810_map_buffer(buf, filp);
191         if (retcode) {
192                 i810_freelist_put(dev, buf);
193                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
194                 return retcode;
195         }
196         buf->filp = filp;
197         buf_priv = buf->dev_private;
198         d->granted = 1;
199         d->request_idx = buf->idx;
200         d->request_size = buf->total;
201         d->virtual = buf_priv->virtual;
202
203         return retcode;
204 }
205
206 static int i810_dma_cleanup(drm_device_t * dev)
207 {
208         drm_device_dma_t *dma = dev->dma;
209
210         /* Make sure interrupts are disabled here because the uninstall ioctl
211          * may not have been called from userspace and after dev_private
212          * is freed, it's too late.
213          */
214         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
215                 drm_irq_uninstall(dev);
216
217         if (dev->dev_private) {
218                 int i;
219                 drm_i810_private_t *dev_priv =
220                     (drm_i810_private_t *) dev->dev_private;
221
222                 if (dev_priv->ring.virtual_start) {
223                         drm_ioremapfree((void *)dev_priv->ring.virtual_start,
224                                         dev_priv->ring.Size, dev);
225                 }
226                 if (dev_priv->hw_status_page) {
227                         pci_free_consistent(dev->pdev, PAGE_SIZE,
228                                             dev_priv->hw_status_page,
229                                             dev_priv->dma_status_page);
230                         /* Need to rewrite hardware status page */
231                         I810_WRITE(0x02080, 0x1ffff000);
232                 }
233                 drm_free(dev->dev_private, sizeof(drm_i810_private_t),
234                          DRM_MEM_DRIVER);
235                 dev->dev_private = NULL;
236
237                 for (i = 0; i < dma->buf_count; i++) {
238                         drm_buf_t *buf = dma->buflist[i];
239                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
240                         if (buf_priv->kernel_virtual && buf->total)
241                                 drm_ioremapfree(buf_priv->kernel_virtual,
242                                                 buf->total, dev);
243                 }
244         }
245         return 0;
246 }
247
248 static int i810_wait_ring(drm_device_t * dev, int n)
249 {
250         drm_i810_private_t *dev_priv = dev->dev_private;
251         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
252         int iters = 0;
253         unsigned long end;
254         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
255
256         end = jiffies + (HZ * 3);
257         while (ring->space < n) {
258                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
259                 ring->space = ring->head - (ring->tail + 8);
260                 if (ring->space < 0)
261                         ring->space += ring->Size;
262
263                 if (ring->head != last_head) {
264                         end = jiffies + (HZ * 3);
265                         last_head = ring->head;
266                 }
267
268                 iters++;
269                 if (time_before(end, jiffies)) {
270                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
271                         DRM_ERROR("lockup\n");
272                         goto out_wait_ring;
273                 }
274                 udelay(1);
275         }
276
277       out_wait_ring:
278         return iters;
279 }
280
281 static void i810_kernel_lost_context(drm_device_t * dev)
282 {
283         drm_i810_private_t *dev_priv = dev->dev_private;
284         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
285
286         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
287         ring->tail = I810_READ(LP_RING + RING_TAIL);
288         ring->space = ring->head - (ring->tail + 8);
289         if (ring->space < 0)
290                 ring->space += ring->Size;
291 }
292
293 static int i810_freelist_init(drm_device_t * dev, drm_i810_private_t * dev_priv)
294 {
295         drm_device_dma_t *dma = dev->dma;
296         int my_idx = 24;
297         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
298         int i;
299
300         if (dma->buf_count > 1019) {
301                 /* Not enough space in the status page for the freelist */
302                 return -EINVAL;
303         }
304
305         for (i = 0; i < dma->buf_count; i++) {
306                 drm_buf_t *buf = dma->buflist[i];
307                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
308
309                 buf_priv->in_use = hw_status++;
310                 buf_priv->my_use_idx = my_idx;
311                 my_idx += 4;
312
313                 *buf_priv->in_use = I810_BUF_FREE;
314
315                 buf_priv->kernel_virtual = drm_ioremap(buf->bus_address,
316                                                        buf->total, dev);
317         }
318         return 0;
319 }
320
321 static int i810_dma_initialize(drm_device_t * dev,
322                                drm_i810_private_t * dev_priv,
323                                drm_i810_init_t * init)
324 {
325         struct list_head *list;
326
327         memset(dev_priv, 0, sizeof(drm_i810_private_t));
328
329         list_for_each(list, &dev->maplist->head) {
330                 drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
331                 if (r_list->map &&
332                     r_list->map->type == _DRM_SHM &&
333                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
334                         dev_priv->sarea_map = r_list->map;
335                         break;
336                 }
337         }
338         if (!dev_priv->sarea_map) {
339                 dev->dev_private = (void *)dev_priv;
340                 i810_dma_cleanup(dev);
341                 DRM_ERROR("can not find sarea!\n");
342                 return -EINVAL;
343         }
344         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
345         if (!dev_priv->mmio_map) {
346                 dev->dev_private = (void *)dev_priv;
347                 i810_dma_cleanup(dev);
348                 DRM_ERROR("can not find mmio map!\n");
349                 return -EINVAL;
350         }
351         dev->agp_buffer_token = init->buffers_offset;
352         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
353         if (!dev->agp_buffer_map) {
354                 dev->dev_private = (void *)dev_priv;
355                 i810_dma_cleanup(dev);
356                 DRM_ERROR("can not find dma buffer map!\n");
357                 return -EINVAL;
358         }
359
360         dev_priv->sarea_priv = (drm_i810_sarea_t *)
361             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
362
363         dev_priv->ring.Start = init->ring_start;
364         dev_priv->ring.End = init->ring_end;
365         dev_priv->ring.Size = init->ring_size;
366
367         dev_priv->ring.virtual_start = drm_ioremap(dev->agp->base +
368                                                    init->ring_start,
369                                                    init->ring_size, dev);
370
371         if (dev_priv->ring.virtual_start == NULL) {
372                 dev->dev_private = (void *)dev_priv;
373                 i810_dma_cleanup(dev);
374                 DRM_ERROR("can not ioremap virtual address for"
375                           " ring buffer\n");
376                 return -ENOMEM;
377         }
378
379         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
380
381         dev_priv->w = init->w;
382         dev_priv->h = init->h;
383         dev_priv->pitch = init->pitch;
384         dev_priv->back_offset = init->back_offset;
385         dev_priv->depth_offset = init->depth_offset;
386         dev_priv->front_offset = init->front_offset;
387
388         dev_priv->overlay_offset = init->overlay_offset;
389         dev_priv->overlay_physical = init->overlay_physical;
390
391         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
392         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
393         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
394
395         /* Program Hardware Status Page */
396         dev_priv->hw_status_page =
397             pci_alloc_consistent(dev->pdev, PAGE_SIZE,
398                                  &dev_priv->dma_status_page);
399         if (!dev_priv->hw_status_page) {
400                 dev->dev_private = (void *)dev_priv;
401                 i810_dma_cleanup(dev);
402                 DRM_ERROR("Can not allocate hardware status page\n");
403                 return -ENOMEM;
404         }
405         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
406         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
407
408         I810_WRITE(0x02080, dev_priv->dma_status_page);
409         DRM_DEBUG("Enabled hardware status page\n");
410
411         /* Now we need to init our freelist */
412         if (i810_freelist_init(dev, dev_priv) != 0) {
413                 dev->dev_private = (void *)dev_priv;
414                 i810_dma_cleanup(dev);
415                 DRM_ERROR("Not enough space in the status page for"
416                           " the freelist\n");
417                 return -ENOMEM;
418         }
419         dev->dev_private = (void *)dev_priv;
420
421         return 0;
422 }
423
424 /* i810 DRM version 1.1 used a smaller init structure with different
425  * ordering of values than is currently used (drm >= 1.2). There is
426  * no defined way to detect the XFree version to correct this problem,
427  * however by checking using this procedure we can detect the correct
428  * thing to do.
429  *
430  * #1 Read the Smaller init structure from user-space
431  * #2 Verify the overlay_physical is a valid physical address, or NULL
432  *    If it isn't then we have a v1.1 client. Fix up params.
433  *    If it is, then we have a 1.2 client... get the rest of the data.
434  */
435 static int i810_dma_init_compat(drm_i810_init_t * init, unsigned long arg)
436 {
437
438         /* Get v1.1 init data */
439         if (copy_from_user(init, (drm_i810_pre12_init_t __user *) arg,
440                            sizeof(drm_i810_pre12_init_t))) {
441                 return -EFAULT;
442         }
443
444         if ((!init->overlay_physical) || (init->overlay_physical > 4096)) {
445
446                 /* This is a v1.2 client, just get the v1.2 init data */
447                 DRM_INFO("Using POST v1.2 init.\n");
448                 if (copy_from_user(init, (drm_i810_init_t __user *) arg,
449                                    sizeof(drm_i810_init_t))) {
450                         return -EFAULT;
451                 }
452         } else {
453
454                 /* This is a v1.1 client, fix the params */
455                 DRM_INFO("Using PRE v1.2 init.\n");
456                 init->pitch_bits = init->h;
457                 init->pitch = init->w;
458                 init->h = init->overlay_physical;
459                 init->w = init->overlay_offset;
460                 init->overlay_physical = 0;
461                 init->overlay_offset = 0;
462         }
463
464         return 0;
465 }
466
467 static int i810_dma_init(struct inode *inode, struct file *filp,
468                          unsigned int cmd, unsigned long arg)
469 {
470         drm_file_t *priv = filp->private_data;
471         drm_device_t *dev = priv->head->dev;
472         drm_i810_private_t *dev_priv;
473         drm_i810_init_t init;
474         int retcode = 0;
475
476         /* Get only the init func */
477         if (copy_from_user
478             (&init, (void __user *)arg, sizeof(drm_i810_init_func_t)))
479                 return -EFAULT;
480
481         switch (init.func) {
482         case I810_INIT_DMA:
483                 /* This case is for backward compatibility. It
484                  * handles XFree 4.1.0 and 4.2.0, and has to
485                  * do some parameter checking as described below.
486                  * It will someday go away.
487                  */
488                 retcode = i810_dma_init_compat(&init, arg);
489                 if (retcode)
490                         return retcode;
491
492                 dev_priv = drm_alloc(sizeof(drm_i810_private_t),
493                                      DRM_MEM_DRIVER);
494                 if (dev_priv == NULL)
495                         return -ENOMEM;
496                 retcode = i810_dma_initialize(dev, dev_priv, &init);
497                 break;
498
499         default:
500         case I810_INIT_DMA_1_4:
501                 DRM_INFO("Using v1.4 init.\n");
502                 if (copy_from_user(&init, (drm_i810_init_t __user *) arg,
503                                    sizeof(drm_i810_init_t))) {
504                         return -EFAULT;
505                 }
506                 dev_priv = drm_alloc(sizeof(drm_i810_private_t),
507                                      DRM_MEM_DRIVER);
508                 if (dev_priv == NULL)
509                         return -ENOMEM;
510                 retcode = i810_dma_initialize(dev, dev_priv, &init);
511                 break;
512
513         case I810_CLEANUP_DMA:
514                 DRM_INFO("DMA Cleanup\n");
515                 retcode = i810_dma_cleanup(dev);
516                 break;
517         }
518
519         return retcode;
520 }
521
522 /* Most efficient way to verify state for the i810 is as it is
523  * emitted.  Non-conformant state is silently dropped.
524  *
525  * Use 'volatile' & local var tmp to force the emitted values to be
526  * identical to the verified ones.
527  */
528 static void i810EmitContextVerified(drm_device_t * dev,
529                                     volatile unsigned int *code)
530 {
531         drm_i810_private_t *dev_priv = dev->dev_private;
532         int i, j = 0;
533         unsigned int tmp;
534         RING_LOCALS;
535
536         BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
537
538         OUT_RING(GFX_OP_COLOR_FACTOR);
539         OUT_RING(code[I810_CTXREG_CF1]);
540
541         OUT_RING(GFX_OP_STIPPLE);
542         OUT_RING(code[I810_CTXREG_ST1]);
543
544         for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
545                 tmp = code[i];
546
547                 if ((tmp & (7 << 29)) == (3 << 29) &&
548                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
549                         OUT_RING(tmp);
550                         j++;
551                 } else
552                         printk("constext state dropped!!!\n");
553         }
554
555         if (j & 1)
556                 OUT_RING(0);
557
558         ADVANCE_LP_RING();
559 }
560
561 static void i810EmitTexVerified(drm_device_t * dev, volatile unsigned int *code)
562 {
563         drm_i810_private_t *dev_priv = dev->dev_private;
564         int i, j = 0;
565         unsigned int tmp;
566         RING_LOCALS;
567
568         BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
569
570         OUT_RING(GFX_OP_MAP_INFO);
571         OUT_RING(code[I810_TEXREG_MI1]);
572         OUT_RING(code[I810_TEXREG_MI2]);
573         OUT_RING(code[I810_TEXREG_MI3]);
574
575         for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
576                 tmp = code[i];
577
578                 if ((tmp & (7 << 29)) == (3 << 29) &&
579                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
580                         OUT_RING(tmp);
581                         j++;
582                 } else
583                         printk("texture state dropped!!!\n");
584         }
585
586         if (j & 1)
587                 OUT_RING(0);
588
589         ADVANCE_LP_RING();
590 }
591
592 /* Need to do some additional checking when setting the dest buffer.
593  */
594 static void i810EmitDestVerified(drm_device_t * dev,
595                                  volatile unsigned int *code)
596 {
597         drm_i810_private_t *dev_priv = dev->dev_private;
598         unsigned int tmp;
599         RING_LOCALS;
600
601         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
602
603         tmp = code[I810_DESTREG_DI1];
604         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
605                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
606                 OUT_RING(tmp);
607         } else
608                 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
609                           tmp, dev_priv->front_di1, dev_priv->back_di1);
610
611         /* invarient:
612          */
613         OUT_RING(CMD_OP_Z_BUFFER_INFO);
614         OUT_RING(dev_priv->zi1);
615
616         OUT_RING(GFX_OP_DESTBUFFER_VARS);
617         OUT_RING(code[I810_DESTREG_DV1]);
618
619         OUT_RING(GFX_OP_DRAWRECT_INFO);
620         OUT_RING(code[I810_DESTREG_DR1]);
621         OUT_RING(code[I810_DESTREG_DR2]);
622         OUT_RING(code[I810_DESTREG_DR3]);
623         OUT_RING(code[I810_DESTREG_DR4]);
624         OUT_RING(0);
625
626         ADVANCE_LP_RING();
627 }
628
629 static void i810EmitState(drm_device_t * dev)
630 {
631         drm_i810_private_t *dev_priv = dev->dev_private;
632         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
633         unsigned int dirty = sarea_priv->dirty;
634
635         DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
636
637         if (dirty & I810_UPLOAD_BUFFERS) {
638                 i810EmitDestVerified(dev, sarea_priv->BufferState);
639                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
640         }
641
642         if (dirty & I810_UPLOAD_CTX) {
643                 i810EmitContextVerified(dev, sarea_priv->ContextState);
644                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
645         }
646
647         if (dirty & I810_UPLOAD_TEX0) {
648                 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
649                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
650         }
651
652         if (dirty & I810_UPLOAD_TEX1) {
653                 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
654                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
655         }
656 }
657
658 /* need to verify
659  */
660 static void i810_dma_dispatch_clear(drm_device_t * dev, int flags,
661                                     unsigned int clear_color,
662                                     unsigned int clear_zval)
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         drm_clip_rect_t *pbox = sarea_priv->boxes;
668         int pitch = dev_priv->pitch;
669         int cpp = 2;
670         int i;
671         RING_LOCALS;
672
673         if (dev_priv->current_page == 1) {
674                 unsigned int tmp = flags;
675
676                 flags &= ~(I810_FRONT | I810_BACK);
677                 if (tmp & I810_FRONT)
678                         flags |= I810_BACK;
679                 if (tmp & I810_BACK)
680                         flags |= I810_FRONT;
681         }
682
683         i810_kernel_lost_context(dev);
684
685         if (nbox > I810_NR_SAREA_CLIPRECTS)
686                 nbox = I810_NR_SAREA_CLIPRECTS;
687
688         for (i = 0; i < nbox; i++, pbox++) {
689                 unsigned int x = pbox->x1;
690                 unsigned int y = pbox->y1;
691                 unsigned int width = (pbox->x2 - x) * cpp;
692                 unsigned int height = pbox->y2 - y;
693                 unsigned int start = y * pitch + x * cpp;
694
695                 if (pbox->x1 > pbox->x2 ||
696                     pbox->y1 > pbox->y2 ||
697                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
698                         continue;
699
700                 if (flags & I810_FRONT) {
701                         BEGIN_LP_RING(6);
702                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
703                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
704                         OUT_RING((height << 16) | width);
705                         OUT_RING(start);
706                         OUT_RING(clear_color);
707                         OUT_RING(0);
708                         ADVANCE_LP_RING();
709                 }
710
711                 if (flags & I810_BACK) {
712                         BEGIN_LP_RING(6);
713                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
714                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
715                         OUT_RING((height << 16) | width);
716                         OUT_RING(dev_priv->back_offset + start);
717                         OUT_RING(clear_color);
718                         OUT_RING(0);
719                         ADVANCE_LP_RING();
720                 }
721
722                 if (flags & I810_DEPTH) {
723                         BEGIN_LP_RING(6);
724                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
725                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
726                         OUT_RING((height << 16) | width);
727                         OUT_RING(dev_priv->depth_offset + start);
728                         OUT_RING(clear_zval);
729                         OUT_RING(0);
730                         ADVANCE_LP_RING();
731                 }
732         }
733 }
734
735 static void i810_dma_dispatch_swap(drm_device_t * dev)
736 {
737         drm_i810_private_t *dev_priv = dev->dev_private;
738         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
739         int nbox = sarea_priv->nbox;
740         drm_clip_rect_t *pbox = sarea_priv->boxes;
741         int pitch = dev_priv->pitch;
742         int cpp = 2;
743         int i;
744         RING_LOCALS;
745
746         DRM_DEBUG("swapbuffers\n");
747
748         i810_kernel_lost_context(dev);
749
750         if (nbox > I810_NR_SAREA_CLIPRECTS)
751                 nbox = I810_NR_SAREA_CLIPRECTS;
752
753         for (i = 0; i < nbox; i++, pbox++) {
754                 unsigned int w = pbox->x2 - pbox->x1;
755                 unsigned int h = pbox->y2 - pbox->y1;
756                 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
757                 unsigned int start = dst;
758
759                 if (pbox->x1 > pbox->x2 ||
760                     pbox->y1 > pbox->y2 ||
761                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
762                         continue;
763
764                 BEGIN_LP_RING(6);
765                 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
766                 OUT_RING(pitch | (0xCC << 16));
767                 OUT_RING((h << 16) | (w * cpp));
768                 if (dev_priv->current_page == 0)
769                         OUT_RING(dev_priv->front_offset + start);
770                 else
771                         OUT_RING(dev_priv->back_offset + start);
772                 OUT_RING(pitch);
773                 if (dev_priv->current_page == 0)
774                         OUT_RING(dev_priv->back_offset + start);
775                 else
776                         OUT_RING(dev_priv->front_offset + start);
777                 ADVANCE_LP_RING();
778         }
779 }
780
781 static void i810_dma_dispatch_vertex(drm_device_t * dev,
782                                      drm_buf_t * buf, int discard, int used)
783 {
784         drm_i810_private_t *dev_priv = dev->dev_private;
785         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
786         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
787         drm_clip_rect_t *box = sarea_priv->boxes;
788         int nbox = sarea_priv->nbox;
789         unsigned long address = (unsigned long)buf->bus_address;
790         unsigned long start = address - dev->agp->base;
791         int i = 0;
792         RING_LOCALS;
793
794         i810_kernel_lost_context(dev);
795
796         if (nbox > I810_NR_SAREA_CLIPRECTS)
797                 nbox = I810_NR_SAREA_CLIPRECTS;
798
799         if (used > 4 * 1024)
800                 used = 0;
801
802         if (sarea_priv->dirty)
803                 i810EmitState(dev);
804
805         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
806                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
807
808                 *(u32 *) buf_priv->kernel_virtual =
809                     ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
810
811                 if (used & 4) {
812                         *(u32 *) ((u32) buf_priv->kernel_virtual + used) = 0;
813                         used += 4;
814                 }
815
816                 i810_unmap_buffer(buf);
817         }
818
819         if (used) {
820                 do {
821                         if (i < nbox) {
822                                 BEGIN_LP_RING(4);
823                                 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
824                                          SC_ENABLE);
825                                 OUT_RING(GFX_OP_SCISSOR_INFO);
826                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
827                                 OUT_RING((box[i].x2 -
828                                           1) | ((box[i].y2 - 1) << 16));
829                                 ADVANCE_LP_RING();
830                         }
831
832                         BEGIN_LP_RING(4);
833                         OUT_RING(CMD_OP_BATCH_BUFFER);
834                         OUT_RING(start | BB1_PROTECTED);
835                         OUT_RING(start + used - 4);
836                         OUT_RING(0);
837                         ADVANCE_LP_RING();
838
839                 } while (++i < nbox);
840         }
841
842         if (discard) {
843                 dev_priv->counter++;
844
845                 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
846                               I810_BUF_HARDWARE);
847
848                 BEGIN_LP_RING(8);
849                 OUT_RING(CMD_STORE_DWORD_IDX);
850                 OUT_RING(20);
851                 OUT_RING(dev_priv->counter);
852                 OUT_RING(CMD_STORE_DWORD_IDX);
853                 OUT_RING(buf_priv->my_use_idx);
854                 OUT_RING(I810_BUF_FREE);
855                 OUT_RING(CMD_REPORT_HEAD);
856                 OUT_RING(0);
857                 ADVANCE_LP_RING();
858         }
859 }
860
861 static void i810_dma_dispatch_flip(drm_device_t * dev)
862 {
863         drm_i810_private_t *dev_priv = dev->dev_private;
864         int pitch = dev_priv->pitch;
865         RING_LOCALS;
866
867         DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
868                   __FUNCTION__,
869                   dev_priv->current_page,
870                   dev_priv->sarea_priv->pf_current_page);
871
872         i810_kernel_lost_context(dev);
873
874         BEGIN_LP_RING(2);
875         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
876         OUT_RING(0);
877         ADVANCE_LP_RING();
878
879         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
880         /* On i815 at least ASYNC is buggy */
881         /* pitch<<5 is from 11.2.8 p158,
882            its the pitch / 8 then left shifted 8,
883            so (pitch >> 3) << 8 */
884         OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
885         if (dev_priv->current_page == 0) {
886                 OUT_RING(dev_priv->back_offset);
887                 dev_priv->current_page = 1;
888         } else {
889                 OUT_RING(dev_priv->front_offset);
890                 dev_priv->current_page = 0;
891         }
892         OUT_RING(0);
893         ADVANCE_LP_RING();
894
895         BEGIN_LP_RING(2);
896         OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
897         OUT_RING(0);
898         ADVANCE_LP_RING();
899
900         /* Increment the frame counter.  The client-side 3D driver must
901          * throttle the framerate by waiting for this value before
902          * performing the swapbuffer ioctl.
903          */
904         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
905
906 }
907
908 static void i810_dma_quiescent(drm_device_t * dev)
909 {
910         drm_i810_private_t *dev_priv = dev->dev_private;
911         RING_LOCALS;
912
913 /*      printk("%s\n", __FUNCTION__); */
914
915         i810_kernel_lost_context(dev);
916
917         BEGIN_LP_RING(4);
918         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
919         OUT_RING(CMD_REPORT_HEAD);
920         OUT_RING(0);
921         OUT_RING(0);
922         ADVANCE_LP_RING();
923
924         i810_wait_ring(dev, dev_priv->ring.Size - 8);
925 }
926
927 static int i810_flush_queue(drm_device_t * dev)
928 {
929         drm_i810_private_t *dev_priv = dev->dev_private;
930         drm_device_dma_t *dma = dev->dma;
931         int i, ret = 0;
932         RING_LOCALS;
933
934 /*      printk("%s\n", __FUNCTION__); */
935
936         i810_kernel_lost_context(dev);
937
938         BEGIN_LP_RING(2);
939         OUT_RING(CMD_REPORT_HEAD);
940         OUT_RING(0);
941         ADVANCE_LP_RING();
942
943         i810_wait_ring(dev, dev_priv->ring.Size - 8);
944
945         for (i = 0; i < dma->buf_count; i++) {
946                 drm_buf_t *buf = dma->buflist[i];
947                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
948
949                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
950                                    I810_BUF_FREE);
951
952                 if (used == I810_BUF_HARDWARE)
953                         DRM_DEBUG("reclaimed from HARDWARE\n");
954                 if (used == I810_BUF_CLIENT)
955                         DRM_DEBUG("still on client\n");
956         }
957
958         return ret;
959 }
960
961 /* Must be called with the lock held */
962 void i810_reclaim_buffers(drm_device_t * dev, struct file *filp)
963 {
964         drm_device_dma_t *dma = dev->dma;
965         int i;
966
967         if (!dma)
968                 return;
969         if (!dev->dev_private)
970                 return;
971         if (!dma->buflist)
972                 return;
973
974         i810_flush_queue(dev);
975
976         for (i = 0; i < dma->buf_count; i++) {
977                 drm_buf_t *buf = dma->buflist[i];
978                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
979
980                 if (buf->filp == filp && buf_priv) {
981                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
982                                            I810_BUF_FREE);
983
984                         if (used == I810_BUF_CLIENT)
985                                 DRM_DEBUG("reclaimed from client\n");
986                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
987                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
988                 }
989         }
990 }
991
992 static int i810_flush_ioctl(struct inode *inode, struct file *filp,
993                             unsigned int cmd, unsigned long arg)
994 {
995         drm_file_t *priv = filp->private_data;
996         drm_device_t *dev = priv->head->dev;
997
998         LOCK_TEST_WITH_RETURN(dev, filp);
999
1000         i810_flush_queue(dev);
1001         return 0;
1002 }
1003
1004 static int i810_dma_vertex(struct inode *inode, struct file *filp,
1005                            unsigned int cmd, unsigned long arg)
1006 {
1007         drm_file_t *priv = filp->private_data;
1008         drm_device_t *dev = priv->head->dev;
1009         drm_device_dma_t *dma = dev->dma;
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         drm_i810_vertex_t vertex;
1015
1016         if (copy_from_user
1017             (&vertex, (drm_i810_vertex_t __user *) arg, sizeof(vertex)))
1018                 return -EFAULT;
1019
1020         LOCK_TEST_WITH_RETURN(dev, filp);
1021
1022         DRM_DEBUG("i810 dma vertex, idx %d used %d discard %d\n",
1023                   vertex.idx, vertex.used, vertex.discard);
1024
1025         if (vertex.idx < 0 || vertex.idx > dma->buf_count)
1026                 return -EINVAL;
1027
1028         i810_dma_dispatch_vertex(dev,
1029                                  dma->buflist[vertex.idx],
1030                                  vertex.discard, vertex.used);
1031
1032         atomic_add(vertex.used, &dev->counts[_DRM_STAT_SECONDARY]);
1033         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1034         sarea_priv->last_enqueue = dev_priv->counter - 1;
1035         sarea_priv->last_dispatch = (int)hw_status[5];
1036
1037         return 0;
1038 }
1039
1040 static int i810_clear_bufs(struct inode *inode, struct file *filp,
1041                            unsigned int cmd, unsigned long arg)
1042 {
1043         drm_file_t *priv = filp->private_data;
1044         drm_device_t *dev = priv->head->dev;
1045         drm_i810_clear_t clear;
1046
1047         if (copy_from_user
1048             (&clear, (drm_i810_clear_t __user *) arg, sizeof(clear)))
1049                 return -EFAULT;
1050
1051         LOCK_TEST_WITH_RETURN(dev, filp);
1052
1053         /* GH: Someone's doing nasty things... */
1054         if (!dev->dev_private) {
1055                 return -EINVAL;
1056         }
1057
1058         i810_dma_dispatch_clear(dev, clear.flags,
1059                                 clear.clear_color, clear.clear_depth);
1060         return 0;
1061 }
1062
1063 static int i810_swap_bufs(struct inode *inode, struct file *filp,
1064                           unsigned int cmd, unsigned long arg)
1065 {
1066         drm_file_t *priv = filp->private_data;
1067         drm_device_t *dev = priv->head->dev;
1068
1069         DRM_DEBUG("i810_swap_bufs\n");
1070
1071         LOCK_TEST_WITH_RETURN(dev, filp);
1072
1073         i810_dma_dispatch_swap(dev);
1074         return 0;
1075 }
1076
1077 static int i810_getage(struct inode *inode, struct file *filp, unsigned int cmd,
1078                        unsigned long arg)
1079 {
1080         drm_file_t *priv = filp->private_data;
1081         drm_device_t *dev = priv->head->dev;
1082         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1083         u32 *hw_status = dev_priv->hw_status_page;
1084         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1085             dev_priv->sarea_priv;
1086
1087         sarea_priv->last_dispatch = (int)hw_status[5];
1088         return 0;
1089 }
1090
1091 static int i810_getbuf(struct inode *inode, struct file *filp, unsigned int cmd,
1092                        unsigned long arg)
1093 {
1094         drm_file_t *priv = filp->private_data;
1095         drm_device_t *dev = priv->head->dev;
1096         int retcode = 0;
1097         drm_i810_dma_t d;
1098         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1099         u32 *hw_status = dev_priv->hw_status_page;
1100         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1101             dev_priv->sarea_priv;
1102
1103         if (copy_from_user(&d, (drm_i810_dma_t __user *) arg, sizeof(d)))
1104                 return -EFAULT;
1105
1106         LOCK_TEST_WITH_RETURN(dev, filp);
1107
1108         d.granted = 0;
1109
1110         retcode = i810_dma_get_buffer(dev, &d, filp);
1111
1112         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1113                   current->pid, retcode, d.granted);
1114
1115         if (copy_to_user((drm_dma_t __user *) arg, &d, sizeof(d)))
1116                 return -EFAULT;
1117         sarea_priv->last_dispatch = (int)hw_status[5];
1118
1119         return retcode;
1120 }
1121
1122 static int i810_copybuf(struct inode *inode,
1123                         struct file *filp, unsigned int cmd, unsigned long arg)
1124 {
1125         /* Never copy - 2.4.x doesn't need it */
1126         return 0;
1127 }
1128
1129 static int i810_docopy(struct inode *inode, struct file *filp, unsigned int cmd,
1130                        unsigned long arg)
1131 {
1132         /* Never copy - 2.4.x doesn't need it */
1133         return 0;
1134 }
1135
1136 static void i810_dma_dispatch_mc(drm_device_t * dev, drm_buf_t * buf, int used,
1137                                  unsigned int last_render)
1138 {
1139         drm_i810_private_t *dev_priv = dev->dev_private;
1140         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1141         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1142         unsigned long address = (unsigned long)buf->bus_address;
1143         unsigned long start = address - dev->agp->base;
1144         int u;
1145         RING_LOCALS;
1146
1147         i810_kernel_lost_context(dev);
1148
1149         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1150         if (u != I810_BUF_CLIENT) {
1151                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1152         }
1153
1154         if (used > 4 * 1024)
1155                 used = 0;
1156
1157         sarea_priv->dirty = 0x7f;
1158
1159         DRM_DEBUG("dispatch mc addr 0x%lx, used 0x%x\n", address, used);
1160
1161         dev_priv->counter++;
1162         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1163         DRM_DEBUG("i810_dma_dispatch_mc\n");
1164         DRM_DEBUG("start : %lx\n", start);
1165         DRM_DEBUG("used : %d\n", used);
1166         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1167
1168         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1169                 if (used & 4) {
1170                         *(u32 *) ((u32) buf_priv->virtual + used) = 0;
1171                         used += 4;
1172                 }
1173
1174                 i810_unmap_buffer(buf);
1175         }
1176         BEGIN_LP_RING(4);
1177         OUT_RING(CMD_OP_BATCH_BUFFER);
1178         OUT_RING(start | BB1_PROTECTED);
1179         OUT_RING(start + used - 4);
1180         OUT_RING(0);
1181         ADVANCE_LP_RING();
1182
1183         BEGIN_LP_RING(8);
1184         OUT_RING(CMD_STORE_DWORD_IDX);
1185         OUT_RING(buf_priv->my_use_idx);
1186         OUT_RING(I810_BUF_FREE);
1187         OUT_RING(0);
1188
1189         OUT_RING(CMD_STORE_DWORD_IDX);
1190         OUT_RING(16);
1191         OUT_RING(last_render);
1192         OUT_RING(0);
1193         ADVANCE_LP_RING();
1194 }
1195
1196 static int i810_dma_mc(struct inode *inode, struct file *filp,
1197                        unsigned int cmd, unsigned long arg)
1198 {
1199         drm_file_t *priv = filp->private_data;
1200         drm_device_t *dev = priv->head->dev;
1201         drm_device_dma_t *dma = dev->dma;
1202         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1203         u32 *hw_status = dev_priv->hw_status_page;
1204         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1205             dev_priv->sarea_priv;
1206         drm_i810_mc_t mc;
1207
1208         if (copy_from_user(&mc, (drm_i810_mc_t __user *) arg, sizeof(mc)))
1209                 return -EFAULT;
1210
1211         LOCK_TEST_WITH_RETURN(dev, filp);
1212
1213         if (mc.idx >= dma->buf_count || mc.idx < 0)
1214                 return -EINVAL;
1215
1216         i810_dma_dispatch_mc(dev, dma->buflist[mc.idx], mc.used,
1217                              mc.last_render);
1218
1219         atomic_add(mc.used, &dev->counts[_DRM_STAT_SECONDARY]);
1220         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1221         sarea_priv->last_enqueue = dev_priv->counter - 1;
1222         sarea_priv->last_dispatch = (int)hw_status[5];
1223
1224         return 0;
1225 }
1226
1227 static int i810_rstatus(struct inode *inode, struct file *filp,
1228                         unsigned int cmd, unsigned long arg)
1229 {
1230         drm_file_t *priv = filp->private_data;
1231         drm_device_t *dev = priv->head->dev;
1232         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1233
1234         return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1235 }
1236
1237 static int i810_ov0_info(struct inode *inode, struct file *filp,
1238                          unsigned int cmd, unsigned long arg)
1239 {
1240         drm_file_t *priv = filp->private_data;
1241         drm_device_t *dev = priv->head->dev;
1242         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1243         drm_i810_overlay_t data;
1244
1245         data.offset = dev_priv->overlay_offset;
1246         data.physical = dev_priv->overlay_physical;
1247         if (copy_to_user
1248             ((drm_i810_overlay_t __user *) arg, &data, sizeof(data)))
1249                 return -EFAULT;
1250         return 0;
1251 }
1252
1253 static int i810_fstatus(struct inode *inode, struct file *filp,
1254                         unsigned int cmd, unsigned long arg)
1255 {
1256         drm_file_t *priv = filp->private_data;
1257         drm_device_t *dev = priv->head->dev;
1258         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1259
1260         LOCK_TEST_WITH_RETURN(dev, filp);
1261
1262         return I810_READ(0x30008);
1263 }
1264
1265 static int i810_ov0_flip(struct inode *inode, struct file *filp,
1266                          unsigned int cmd, unsigned long arg)
1267 {
1268         drm_file_t *priv = filp->private_data;
1269         drm_device_t *dev = priv->head->dev;
1270         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1271
1272         LOCK_TEST_WITH_RETURN(dev, filp);
1273
1274         //Tell the overlay to update
1275         I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1276
1277         return 0;
1278 }
1279
1280 /* Not sure why this isn't set all the time:
1281  */
1282 static void i810_do_init_pageflip(drm_device_t * dev)
1283 {
1284         drm_i810_private_t *dev_priv = dev->dev_private;
1285
1286         DRM_DEBUG("%s\n", __FUNCTION__);
1287         dev_priv->page_flipping = 1;
1288         dev_priv->current_page = 0;
1289         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1290 }
1291
1292 static int i810_do_cleanup_pageflip(drm_device_t * dev)
1293 {
1294         drm_i810_private_t *dev_priv = dev->dev_private;
1295
1296         DRM_DEBUG("%s\n", __FUNCTION__);
1297         if (dev_priv->current_page != 0)
1298                 i810_dma_dispatch_flip(dev);
1299
1300         dev_priv->page_flipping = 0;
1301         return 0;
1302 }
1303
1304 static int i810_flip_bufs(struct inode *inode, struct file *filp,
1305                           unsigned int cmd, unsigned long arg)
1306 {
1307         drm_file_t *priv = filp->private_data;
1308         drm_device_t *dev = priv->head->dev;
1309         drm_i810_private_t *dev_priv = dev->dev_private;
1310
1311         DRM_DEBUG("%s\n", __FUNCTION__);
1312
1313         LOCK_TEST_WITH_RETURN(dev, filp);
1314
1315         if (!dev_priv->page_flipping)
1316                 i810_do_init_pageflip(dev);
1317
1318         i810_dma_dispatch_flip(dev);
1319         return 0;
1320 }
1321
1322 void i810_driver_pretakedown(drm_device_t * dev)
1323 {
1324         i810_dma_cleanup(dev);
1325 }
1326
1327 void i810_driver_prerelease(drm_device_t * dev, DRMFILE filp)
1328 {
1329         if (dev->dev_private) {
1330                 drm_i810_private_t *dev_priv = dev->dev_private;
1331                 if (dev_priv->page_flipping) {
1332                         i810_do_cleanup_pageflip(dev);
1333                 }
1334         }
1335 }
1336
1337 void i810_driver_release(drm_device_t * dev, struct file *filp)
1338 {
1339         i810_reclaim_buffers(dev, filp);
1340 }
1341
1342 int i810_driver_dma_quiescent(drm_device_t * dev)
1343 {
1344         i810_dma_quiescent(dev);
1345         return 0;
1346 }
1347
1348 drm_ioctl_desc_t i810_ioctls[] = {
1349         [DRM_IOCTL_NR(DRM_I810_INIT)] = {i810_dma_init, 1, 1},
1350         [DRM_IOCTL_NR(DRM_I810_VERTEX)] = {i810_dma_vertex, 1, 0},
1351         [DRM_IOCTL_NR(DRM_I810_CLEAR)] = {i810_clear_bufs, 1, 0},
1352         [DRM_IOCTL_NR(DRM_I810_FLUSH)] = {i810_flush_ioctl, 1, 0},
1353         [DRM_IOCTL_NR(DRM_I810_GETAGE)] = {i810_getage, 1, 0},
1354         [DRM_IOCTL_NR(DRM_I810_GETBUF)] = {i810_getbuf, 1, 0},
1355         [DRM_IOCTL_NR(DRM_I810_SWAP)] = {i810_swap_bufs, 1, 0},
1356         [DRM_IOCTL_NR(DRM_I810_COPY)] = {i810_copybuf, 1, 0},
1357         [DRM_IOCTL_NR(DRM_I810_DOCOPY)] = {i810_docopy, 1, 0},
1358         [DRM_IOCTL_NR(DRM_I810_OV0INFO)] = {i810_ov0_info, 1, 0},
1359         [DRM_IOCTL_NR(DRM_I810_FSTATUS)] = {i810_fstatus, 1, 0},
1360         [DRM_IOCTL_NR(DRM_I810_OV0FLIP)] = {i810_ov0_flip, 1, 0},
1361         [DRM_IOCTL_NR(DRM_I810_MC)] = {i810_dma_mc, 1, 1},
1362         [DRM_IOCTL_NR(DRM_I810_RSTATUS)] = {i810_rstatus, 1, 0},
1363         [DRM_IOCTL_NR(DRM_I810_FLIP)] = {i810_flip_bufs, 1, 0}
1364 };
1365
1366 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1367
1368 /**
1369  * Determine if the device really is AGP or not.
1370  *
1371  * All Intel graphics chipsets are treated as AGP, even if they are really
1372  * PCI-e.
1373  *
1374  * \param dev   The device to be tested.
1375  *
1376  * \returns
1377  * A value of 1 is always retured to indictate every i810 is AGP.
1378  */
1379 int i810_driver_device_is_agp(drm_device_t * dev)
1380 {
1381         return 1;
1382 }