drm: add test for AGP devices and driver override for it.
[linux-2.6.git] / 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 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,2)
49 #define down_write down
50 #define up_write up
51 #endif
52
53 static drm_buf_t *i810_freelist_get(drm_device_t *dev)
54 {
55         drm_device_dma_t *dma = dev->dma;
56         int              i;
57         int              used;
58
59         /* Linear search might not be the best solution */
60
61         for (i = 0; i < dma->buf_count; i++) {
62                 drm_buf_t *buf = dma->buflist[ i ];
63                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
64                 /* In use is already a pointer */
65                 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
66                                I810_BUF_CLIENT);
67                 if (used == I810_BUF_FREE) {
68                         return buf;
69                 }
70         }
71         return NULL;
72 }
73
74 /* This should only be called if the buffer is not sent to the hardware
75  * yet, the hardware updates in use for us once its on the ring buffer.
76  */
77
78 static int i810_freelist_put(drm_device_t *dev, drm_buf_t *buf)
79 {
80         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
81         int used;
82
83         /* In use is already a pointer */
84         used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
85         if (used != I810_BUF_CLIENT) {
86                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
87                 return -EINVAL;
88         }
89
90         return 0;
91 }
92
93 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
94 {
95         drm_file_t          *priv         = filp->private_data;
96         drm_device_t        *dev;
97         drm_i810_private_t  *dev_priv;
98         drm_buf_t           *buf;
99         drm_i810_buf_priv_t *buf_priv;
100
101         lock_kernel();
102         dev      = priv->head->dev;
103         dev_priv = dev->dev_private;
104         buf      = dev_priv->mmap_buffer;
105         buf_priv = buf->dev_private;
106
107         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
108         vma->vm_file = filp;
109
110         buf_priv->currently_mapped = I810_BUF_MAPPED;
111         unlock_kernel();
112
113         if (io_remap_pfn_range(vma, vma->vm_start,
114                              VM_OFFSET(vma) >> PAGE_SHIFT,
115                              vma->vm_end - vma->vm_start,
116                              vma->vm_page_prot)) return -EAGAIN;
117         return 0;
118 }
119
120 static struct file_operations i810_buffer_fops = {
121         .open    = drm_open,
122         .flush   = drm_flush,
123         .release = drm_release,
124         .ioctl   = drm_ioctl,
125         .mmap    = i810_mmap_buffers,
126         .fasync  = drm_fasync,
127 };
128
129 static int i810_map_buffer(drm_buf_t *buf, struct file *filp)
130 {
131         drm_file_t        *priv   = filp->private_data;
132         drm_device_t      *dev    = priv->head->dev;
133         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
134         drm_i810_private_t *dev_priv = dev->dev_private;
135         struct file_operations *old_fops;
136         int retcode = 0;
137
138         if (buf_priv->currently_mapped == I810_BUF_MAPPED) 
139                 return -EINVAL;
140
141         down_write( &current->mm->mmap_sem );
142         old_fops = filp->f_op;
143         filp->f_op = &i810_buffer_fops;
144         dev_priv->mmap_buffer = buf;
145         buf_priv->virtual = (void *)do_mmap(filp, 0, buf->total,
146                                             PROT_READ|PROT_WRITE,
147                                             MAP_SHARED,
148                                             buf->bus_address);
149         dev_priv->mmap_buffer = NULL;
150         filp->f_op = old_fops;
151         if ((unsigned long)buf_priv->virtual > -1024UL) {
152                 /* Real error */
153                 DRM_ERROR("mmap error\n");
154                 retcode = (signed int)buf_priv->virtual;
155                 buf_priv->virtual = NULL;
156         }
157         up_write( &current->mm->mmap_sem );
158
159         return retcode;
160 }
161
162 static int i810_unmap_buffer(drm_buf_t *buf)
163 {
164         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
165         int retcode = 0;
166
167         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
168                 return -EINVAL;
169
170         down_write(&current->mm->mmap_sem);
171         retcode = do_munmap(current->mm,
172                             (unsigned long)buf_priv->virtual,
173                             (size_t) buf->total);
174         up_write(&current->mm->mmap_sem);
175
176         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
177         buf_priv->virtual = NULL;
178
179         return retcode;
180 }
181
182 static int i810_dma_get_buffer(drm_device_t *dev, drm_i810_dma_t *d,
183                                struct file *filp)
184 {
185         drm_buf_t         *buf;
186         drm_i810_buf_priv_t *buf_priv;
187         int retcode = 0;
188
189         buf = i810_freelist_get(dev);
190         if (!buf) {
191                 retcode = -ENOMEM;
192                 DRM_DEBUG("retcode=%d\n", retcode);
193                 return retcode;
194         }
195
196         retcode = i810_map_buffer(buf, filp);
197         if (retcode) {
198                 i810_freelist_put(dev, buf);
199                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
200                 return retcode;
201         }
202         buf->filp = filp;
203         buf_priv = buf->dev_private;
204         d->granted = 1;
205         d->request_idx = buf->idx;
206         d->request_size = buf->total;
207         d->virtual = buf_priv->virtual;
208
209         return retcode;
210 }
211
212 static int i810_dma_cleanup(drm_device_t *dev)
213 {
214         drm_device_dma_t *dma = dev->dma;
215
216         /* Make sure interrupts are disabled here because the uninstall ioctl
217          * may not have been called from userspace and after dev_private
218          * is freed, it's too late.
219          */
220         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
221                 drm_irq_uninstall(dev);
222
223         if (dev->dev_private) {
224                 int i;
225                 drm_i810_private_t *dev_priv =
226                         (drm_i810_private_t *) dev->dev_private;
227
228                 if (dev_priv->ring.virtual_start) {
229                         drm_ioremapfree((void *) dev_priv->ring.virtual_start,
230                                          dev_priv->ring.Size, dev);
231                 }
232                 if (dev_priv->hw_status_page) {
233                         pci_free_consistent(dev->pdev, PAGE_SIZE,
234                                             dev_priv->hw_status_page,
235                                             dev_priv->dma_status_page);
236                         /* Need to rewrite hardware status page */
237                         I810_WRITE(0x02080, 0x1ffff000);
238                 }
239                 drm_free(dev->dev_private, sizeof(drm_i810_private_t),
240                          DRM_MEM_DRIVER);
241                 dev->dev_private = NULL;
242
243                 for (i = 0; i < dma->buf_count; i++) {
244                         drm_buf_t *buf = dma->buflist[ i ];
245                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
246                         if ( buf_priv->kernel_virtual && buf->total )
247                                 drm_ioremapfree(buf_priv->kernel_virtual, buf->total, dev);
248                 }
249         }
250         return 0;
251 }
252
253 static int i810_wait_ring(drm_device_t *dev, int n)
254 {
255         drm_i810_private_t *dev_priv = dev->dev_private;
256         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
257         int iters = 0;
258         unsigned long end;
259         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
260
261         end = jiffies + (HZ*3);
262         while (ring->space < n) {
263                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
264                 ring->space = ring->head - (ring->tail+8);
265                 if (ring->space < 0) ring->space += ring->Size;
266            
267                 if (ring->head != last_head) {
268                         end = jiffies + (HZ*3);
269                         last_head = ring->head;
270                 }
271           
272                 iters++;
273                 if (time_before(end, jiffies)) {
274                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
275                         DRM_ERROR("lockup\n");
276                         goto out_wait_ring;
277                 }
278                 udelay(1);
279         }
280
281 out_wait_ring:
282         return iters;
283 }
284
285 static void i810_kernel_lost_context(drm_device_t *dev)
286 {
287         drm_i810_private_t *dev_priv = dev->dev_private;
288         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
289
290         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
291         ring->tail = I810_READ(LP_RING + RING_TAIL);
292         ring->space = ring->head - (ring->tail+8);
293         if (ring->space < 0) ring->space += ring->Size;
294 }
295
296 static int i810_freelist_init(drm_device_t *dev, drm_i810_private_t *dev_priv)
297 {
298         drm_device_dma_t *dma = dev->dma;
299         int my_idx = 24;
300         u32 *hw_status = (u32 *)(dev_priv->hw_status_page + my_idx);
301         int i;
302
303         if (dma->buf_count > 1019) {
304                 /* Not enough space in the status page for the freelist */
305                 return -EINVAL;
306         }
307
308         for (i = 0; i < dma->buf_count; i++) {
309                 drm_buf_t *buf = dma->buflist[ i ];
310                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
311
312                 buf_priv->in_use = hw_status++;
313                 buf_priv->my_use_idx = my_idx;
314                 my_idx += 4;
315
316                 *buf_priv->in_use = I810_BUF_FREE;
317
318                 buf_priv->kernel_virtual = drm_ioremap(buf->bus_address,
319                                                         buf->total, dev);
320         }
321         return 0;
322 }
323
324 static int i810_dma_initialize(drm_device_t *dev,
325                                drm_i810_private_t *dev_priv,
326                                drm_i810_init_t *init)
327 {
328         struct list_head *list;
329
330         memset(dev_priv, 0, sizeof(drm_i810_private_t));
331
332         list_for_each(list, &dev->maplist->head) {
333                 drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
334                 if (r_list->map &&
335                     r_list->map->type == _DRM_SHM &&
336                     r_list->map->flags & _DRM_CONTAINS_LOCK ) {
337                         dev_priv->sarea_map = r_list->map;
338                         break;
339                 }
340         }
341         if (!dev_priv->sarea_map) {
342                 dev->dev_private = (void *)dev_priv;
343                 i810_dma_cleanup(dev);
344                 DRM_ERROR("can not find sarea!\n");
345                 return -EINVAL;
346         }
347         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
348         if (!dev_priv->mmio_map) {
349                 dev->dev_private = (void *)dev_priv;
350                 i810_dma_cleanup(dev);
351                 DRM_ERROR("can not find mmio map!\n");
352                 return -EINVAL;
353         }
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 +
364                  init->sarea_priv_offset);
365
366         dev_priv->ring.Start = init->ring_start;
367         dev_priv->ring.End = init->ring_end;
368         dev_priv->ring.Size = init->ring_size;
369
370         dev_priv->ring.virtual_start = drm_ioremap(dev->agp->base +
371                                                     init->ring_start,
372                                                     init->ring_size, dev);
373
374         if (dev_priv->ring.virtual_start == NULL) {
375                 dev->dev_private = (void *) dev_priv;
376                 i810_dma_cleanup(dev);
377                 DRM_ERROR("can not ioremap virtual address for"
378                           " ring buffer\n");
379                 return -ENOMEM;
380         }
381
382         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
383
384         dev_priv->w = init->w;
385         dev_priv->h = init->h;
386         dev_priv->pitch = init->pitch;
387         dev_priv->back_offset = init->back_offset;
388         dev_priv->depth_offset = init->depth_offset;
389         dev_priv->front_offset = init->front_offset;
390
391         dev_priv->overlay_offset = init->overlay_offset;
392         dev_priv->overlay_physical = init->overlay_physical;
393
394         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
395         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
396         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
397
398         /* Program Hardware Status Page */
399         dev_priv->hw_status_page =
400                 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
401                                                 &dev_priv->dma_status_page);
402         if (!dev_priv->hw_status_page) {
403                 dev->dev_private = (void *)dev_priv;
404                 i810_dma_cleanup(dev);
405                 DRM_ERROR("Can not allocate hardware status page\n");
406                 return -ENOMEM;
407         }
408         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
409         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
410
411         I810_WRITE(0x02080, dev_priv->dma_status_page);
412         DRM_DEBUG("Enabled hardware status page\n");
413
414         /* Now we need to init our freelist */
415         if (i810_freelist_init(dev, dev_priv) != 0) {
416                 dev->dev_private = (void *)dev_priv;
417                 i810_dma_cleanup(dev);
418                 DRM_ERROR("Not enough space in the status page for"
419                           " the freelist\n");
420                 return -ENOMEM;
421         }
422         dev->dev_private = (void *)dev_priv;
423
424         return 0;
425 }
426
427 /* i810 DRM version 1.1 used a smaller init structure with different
428  * ordering of values than is currently used (drm >= 1.2). There is
429  * no defined way to detect the XFree version to correct this problem,
430  * however by checking using this procedure we can detect the correct
431  * thing to do.
432  *
433  * #1 Read the Smaller init structure from user-space
434  * #2 Verify the overlay_physical is a valid physical address, or NULL
435  *    If it isn't then we have a v1.1 client. Fix up params.
436  *    If it is, then we have a 1.2 client... get the rest of the data.
437  */
438 static int i810_dma_init_compat(drm_i810_init_t *init, unsigned long arg)
439 {
440
441         /* Get v1.1 init data */
442         if (copy_from_user(init, (drm_i810_pre12_init_t __user *)arg,
443                           sizeof(drm_i810_pre12_init_t))) {
444                 return -EFAULT;
445         }
446
447         if ((!init->overlay_physical) || (init->overlay_physical > 4096)) {
448
449                 /* This is a v1.2 client, just get the v1.2 init data */
450                 DRM_INFO("Using POST v1.2 init.\n");
451                 if (copy_from_user(init, (drm_i810_init_t __user *)arg,
452                                    sizeof(drm_i810_init_t))) {
453                         return -EFAULT;
454                 }
455         } else {
456
457                 /* This is a v1.1 client, fix the params */
458                 DRM_INFO("Using PRE v1.2 init.\n");
459                 init->pitch_bits = init->h;
460                 init->pitch = init->w;
461                 init->h = init->overlay_physical;
462                 init->w = init->overlay_offset;
463                 init->overlay_physical = 0;
464                 init->overlay_offset = 0;
465         }
466
467         return 0;
468 }
469
470 static int i810_dma_init(struct inode *inode, struct file *filp,
471                   unsigned int cmd, unsigned long arg)
472 {
473         drm_file_t *priv = filp->private_data;
474         drm_device_t *dev = priv->head->dev;
475         drm_i810_private_t *dev_priv;
476         drm_i810_init_t init;
477         int retcode = 0;
478
479         /* Get only the init func */
480         if (copy_from_user(&init, (void __user *)arg, sizeof(drm_i810_init_func_t))) 
481                 return -EFAULT;
482
483         switch(init.func) {
484                 case I810_INIT_DMA:
485                         /* This case is for backward compatibility. It
486                          * handles XFree 4.1.0 and 4.2.0, and has to
487                          * do some parameter checking as described below.
488                          * It will someday go away.
489                          */
490                         retcode = i810_dma_init_compat(&init, arg);
491                         if (retcode)
492                                 return retcode;
493
494                         dev_priv = drm_alloc(sizeof(drm_i810_private_t),
495                                              DRM_MEM_DRIVER);
496                         if (dev_priv == NULL)
497                                 return -ENOMEM;
498                         retcode = i810_dma_initialize(dev, dev_priv, &init);
499                         break;
500
501                 default:
502                 case I810_INIT_DMA_1_4:
503                         DRM_INFO("Using v1.4 init.\n");
504                         if (copy_from_user(&init, (drm_i810_init_t __user *)arg,
505                                           sizeof(drm_i810_init_t))) {
506                                 return -EFAULT;
507                         }
508                         dev_priv = drm_alloc(sizeof(drm_i810_private_t),
509                                              DRM_MEM_DRIVER);
510                         if (dev_priv == NULL) 
511                                 return -ENOMEM;
512                         retcode = i810_dma_initialize(dev, dev_priv, &init);
513                         break;
514
515                 case I810_CLEANUP_DMA:
516                         DRM_INFO("DMA Cleanup\n");
517                         retcode = i810_dma_cleanup(dev);
518                         break;
519         }
520
521         return retcode;
522 }
523
524
525
526 /* Most efficient way to verify state for the i810 is as it is
527  * emitted.  Non-conformant state is silently dropped.
528  *
529  * Use 'volatile' & local var tmp to force the emitted values to be
530  * identical to the verified ones.
531  */
532 static void i810EmitContextVerified( drm_device_t *dev,
533                                      volatile unsigned int *code )
534 {
535         drm_i810_private_t *dev_priv = dev->dev_private;
536         int i, j = 0;
537         unsigned int tmp;
538         RING_LOCALS;
539
540         BEGIN_LP_RING( I810_CTX_SETUP_SIZE );
541
542         OUT_RING( GFX_OP_COLOR_FACTOR );
543         OUT_RING( code[I810_CTXREG_CF1] );
544
545         OUT_RING( GFX_OP_STIPPLE );
546         OUT_RING( code[I810_CTXREG_ST1] );
547
548         for ( i = 4 ; i < I810_CTX_SETUP_SIZE ; i++ ) {
549                 tmp = code[i];
550
551                 if ((tmp & (7<<29)) == (3<<29) &&
552                     (tmp & (0x1f<<24)) < (0x1d<<24))
553                 {
554                         OUT_RING( tmp );
555                         j++;
556                 }
557                 else printk("constext state dropped!!!\n");
558         }
559
560         if (j & 1)
561                 OUT_RING( 0 );
562
563         ADVANCE_LP_RING();
564 }
565
566 static void i810EmitTexVerified( drm_device_t *dev,
567                                  volatile unsigned int *code )
568 {
569         drm_i810_private_t *dev_priv = dev->dev_private;
570         int i, j = 0;
571         unsigned int tmp;
572         RING_LOCALS;
573
574         BEGIN_LP_RING( I810_TEX_SETUP_SIZE );
575
576         OUT_RING( GFX_OP_MAP_INFO );
577         OUT_RING( code[I810_TEXREG_MI1] );
578         OUT_RING( code[I810_TEXREG_MI2] );
579         OUT_RING( code[I810_TEXREG_MI3] );
580
581         for ( i = 4 ; i < I810_TEX_SETUP_SIZE ; i++ ) {
582                 tmp = code[i];
583
584                 if ((tmp & (7<<29)) == (3<<29) &&
585                     (tmp & (0x1f<<24)) < (0x1d<<24))
586                 {
587                         OUT_RING( tmp );
588                         j++;
589                 }
590                 else printk("texture state dropped!!!\n");
591         }
592
593         if (j & 1)
594                 OUT_RING( 0 );
595
596         ADVANCE_LP_RING();
597 }
598
599
600 /* Need to do some additional checking when setting the dest buffer.
601  */
602 static void i810EmitDestVerified( drm_device_t *dev,
603                                   volatile unsigned int *code )
604 {
605         drm_i810_private_t *dev_priv = dev->dev_private;
606         unsigned int tmp;
607         RING_LOCALS;
608
609         BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
610
611         tmp = code[I810_DESTREG_DI1];
612         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
613                 OUT_RING( CMD_OP_DESTBUFFER_INFO );
614                 OUT_RING( tmp );
615         } else
616            DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
617                      tmp, dev_priv->front_di1, dev_priv->back_di1);
618
619         /* invarient:
620          */
621         OUT_RING( CMD_OP_Z_BUFFER_INFO );
622         OUT_RING( dev_priv->zi1 );
623
624         OUT_RING( GFX_OP_DESTBUFFER_VARS );
625         OUT_RING( code[I810_DESTREG_DV1] );
626
627         OUT_RING( GFX_OP_DRAWRECT_INFO );
628         OUT_RING( code[I810_DESTREG_DR1] );
629         OUT_RING( code[I810_DESTREG_DR2] );
630         OUT_RING( code[I810_DESTREG_DR3] );
631         OUT_RING( code[I810_DESTREG_DR4] );
632         OUT_RING( 0 );
633
634         ADVANCE_LP_RING();
635 }
636
637
638
639 static void i810EmitState( drm_device_t *dev )
640 {
641         drm_i810_private_t *dev_priv = dev->dev_private;
642         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
643         unsigned int dirty = sarea_priv->dirty;
644         
645         DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
646
647         if (dirty & I810_UPLOAD_BUFFERS) {
648                 i810EmitDestVerified( dev, sarea_priv->BufferState );
649                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
650         }
651
652         if (dirty & I810_UPLOAD_CTX) {
653                 i810EmitContextVerified( dev, sarea_priv->ContextState );
654                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
655         }
656
657         if (dirty & I810_UPLOAD_TEX0) {
658                 i810EmitTexVerified( dev, sarea_priv->TexState[0] );
659                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
660         }
661
662         if (dirty & I810_UPLOAD_TEX1) {
663                 i810EmitTexVerified( dev, sarea_priv->TexState[1] );
664                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
665         }
666 }
667
668
669
670 /* need to verify
671  */
672 static void i810_dma_dispatch_clear( drm_device_t *dev, int flags,
673                                      unsigned int clear_color,
674                                      unsigned int clear_zval )
675 {
676         drm_i810_private_t *dev_priv = dev->dev_private;
677         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
678         int nbox = sarea_priv->nbox;
679         drm_clip_rect_t *pbox = sarea_priv->boxes;
680         int pitch = dev_priv->pitch;
681         int cpp = 2;
682         int i;
683         RING_LOCALS;
684         
685         if ( dev_priv->current_page == 1 ) {
686                 unsigned int tmp = flags;
687                
688                 flags &= ~(I810_FRONT | I810_BACK);
689                 if (tmp & I810_FRONT) flags |= I810_BACK;
690                 if (tmp & I810_BACK) flags |= I810_FRONT;
691         }
692
693         i810_kernel_lost_context(dev);
694
695         if (nbox > I810_NR_SAREA_CLIPRECTS)
696                 nbox = I810_NR_SAREA_CLIPRECTS;
697
698         for (i = 0 ; i < nbox ; i++, pbox++) {
699                 unsigned int x = pbox->x1;
700                 unsigned int y = pbox->y1;
701                 unsigned int width = (pbox->x2 - x) * cpp;
702                 unsigned int height = pbox->y2 - y;
703                 unsigned int start = y * pitch + x * cpp;
704
705                 if (pbox->x1 > pbox->x2 ||
706                     pbox->y1 > pbox->y2 ||
707                     pbox->x2 > dev_priv->w ||
708                     pbox->y2 > dev_priv->h)
709                         continue;
710
711                 if ( flags & I810_FRONT ) {
712                         BEGIN_LP_RING( 6 );
713                         OUT_RING( BR00_BITBLT_CLIENT |
714                                   BR00_OP_COLOR_BLT | 0x3 );
715                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
716                         OUT_RING( (height << 16) | width );
717                         OUT_RING( start );
718                         OUT_RING( clear_color );
719                         OUT_RING( 0 );
720                         ADVANCE_LP_RING();
721                 }
722
723                 if ( flags & I810_BACK ) {
724                         BEGIN_LP_RING( 6 );
725                         OUT_RING( BR00_BITBLT_CLIENT |
726                                   BR00_OP_COLOR_BLT | 0x3 );
727                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
728                         OUT_RING( (height << 16) | width );
729                         OUT_RING( dev_priv->back_offset + start );
730                         OUT_RING( clear_color );
731                         OUT_RING( 0 );
732                         ADVANCE_LP_RING();
733                 }
734
735                 if ( flags & I810_DEPTH ) {
736                         BEGIN_LP_RING( 6 );
737                         OUT_RING( BR00_BITBLT_CLIENT |
738                                   BR00_OP_COLOR_BLT | 0x3 );
739                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
740                         OUT_RING( (height << 16) | width );
741                         OUT_RING( dev_priv->depth_offset + start );
742                         OUT_RING( clear_zval );
743                         OUT_RING( 0 );
744                         ADVANCE_LP_RING();
745                 }
746         }
747 }
748
749 static void i810_dma_dispatch_swap( drm_device_t *dev )
750 {
751         drm_i810_private_t *dev_priv = dev->dev_private;
752         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
753         int nbox = sarea_priv->nbox;
754         drm_clip_rect_t *pbox = sarea_priv->boxes;
755         int pitch = dev_priv->pitch;
756         int cpp = 2;
757         int i;
758         RING_LOCALS;
759
760         DRM_DEBUG("swapbuffers\n");
761
762         i810_kernel_lost_context(dev);
763
764         if (nbox > I810_NR_SAREA_CLIPRECTS)
765                 nbox = I810_NR_SAREA_CLIPRECTS;
766
767         for (i = 0 ; i < nbox; i++, pbox++)
768         {
769                 unsigned int w = pbox->x2 - pbox->x1;
770                 unsigned int h = pbox->y2 - pbox->y1;
771                 unsigned int dst = pbox->x1*cpp + pbox->y1*pitch;
772                 unsigned int start = dst;
773
774                 if (pbox->x1 > pbox->x2 ||
775                     pbox->y1 > pbox->y2 ||
776                     pbox->x2 > dev_priv->w ||
777                     pbox->y2 > dev_priv->h)
778                         continue;
779
780                 BEGIN_LP_RING( 6 );
781                 OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4 );
782                 OUT_RING( pitch | (0xCC << 16));
783                 OUT_RING( (h << 16) | (w * cpp));
784                 if (dev_priv->current_page == 0)
785                   OUT_RING(dev_priv->front_offset + start);
786                 else
787                   OUT_RING(dev_priv->back_offset + start);
788                 OUT_RING( pitch );
789                 if (dev_priv->current_page == 0)
790                   OUT_RING(dev_priv->back_offset + start);
791                 else
792                   OUT_RING(dev_priv->front_offset + start);
793                 ADVANCE_LP_RING();
794         }
795 }
796
797
798 static void i810_dma_dispatch_vertex(drm_device_t *dev,
799                                      drm_buf_t *buf,
800                                      int discard,
801                                      int used)
802 {
803         drm_i810_private_t *dev_priv = dev->dev_private;
804         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
805         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
806         drm_clip_rect_t *box = sarea_priv->boxes;
807         int nbox = sarea_priv->nbox;
808         unsigned long address = (unsigned long)buf->bus_address;
809         unsigned long start = address - dev->agp->base;
810         int i = 0;
811         RING_LOCALS;
812
813         i810_kernel_lost_context(dev);
814
815         if (nbox > I810_NR_SAREA_CLIPRECTS)
816                 nbox = I810_NR_SAREA_CLIPRECTS;
817
818         if (used > 4*1024)
819                 used = 0;
820
821         if (sarea_priv->dirty)
822            i810EmitState( dev );
823
824         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
825                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
826
827                 *(u32 *)buf_priv->kernel_virtual = ((GFX_OP_PRIMITIVE | prim | ((used/4)-2)));
828
829                 if (used & 4) {
830                         *(u32 *)((u32)buf_priv->kernel_virtual + used) = 0;
831                         used += 4;
832                 }
833
834                 i810_unmap_buffer(buf);
835         }
836
837         if (used) {
838                 do {
839                         if (i < nbox) {
840                                 BEGIN_LP_RING(4);
841                                 OUT_RING( GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
842                                           SC_ENABLE );
843                                 OUT_RING( GFX_OP_SCISSOR_INFO );
844                                 OUT_RING( box[i].x1 | (box[i].y1<<16) );
845                                 OUT_RING( (box[i].x2-1) | ((box[i].y2-1)<<16) );
846                                 ADVANCE_LP_RING();
847                         }
848
849                         BEGIN_LP_RING(4);
850                         OUT_RING( CMD_OP_BATCH_BUFFER );
851                         OUT_RING( start | BB1_PROTECTED );
852                         OUT_RING( start + used - 4 );
853                         OUT_RING( 0 );
854                         ADVANCE_LP_RING();
855
856                 } while (++i < nbox);
857         }
858
859         if (discard) {
860                 dev_priv->counter++;
861
862                 (void) cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
863                                I810_BUF_HARDWARE);
864
865                 BEGIN_LP_RING(8);
866                 OUT_RING( CMD_STORE_DWORD_IDX );
867                 OUT_RING( 20 );
868                 OUT_RING( dev_priv->counter );
869                 OUT_RING( CMD_STORE_DWORD_IDX );
870                 OUT_RING( buf_priv->my_use_idx );
871                 OUT_RING( I810_BUF_FREE );
872                 OUT_RING( CMD_REPORT_HEAD );
873                 OUT_RING( 0 );
874                 ADVANCE_LP_RING();
875         }
876 }
877
878 static void i810_dma_dispatch_flip( drm_device_t *dev )
879 {
880         drm_i810_private_t *dev_priv = dev->dev_private;
881         int pitch = dev_priv->pitch;
882         RING_LOCALS;
883
884         DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n", 
885                 __FUNCTION__, 
886                 dev_priv->current_page,
887                 dev_priv->sarea_priv->pf_current_page);
888         
889         i810_kernel_lost_context(dev);
890
891         BEGIN_LP_RING( 2 );
892         OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE ); 
893         OUT_RING( 0 );
894         ADVANCE_LP_RING();
895
896         BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
897         /* On i815 at least ASYNC is buggy */
898         /* pitch<<5 is from 11.2.8 p158,
899            its the pitch / 8 then left shifted 8,
900            so (pitch >> 3) << 8 */
901         OUT_RING( CMD_OP_FRONTBUFFER_INFO | (pitch<<5) /*| ASYNC_FLIP */ );
902         if ( dev_priv->current_page == 0 ) {
903                 OUT_RING( dev_priv->back_offset );
904                 dev_priv->current_page = 1;
905         } else {
906                 OUT_RING( dev_priv->front_offset );
907                 dev_priv->current_page = 0;
908         }
909         OUT_RING(0);
910         ADVANCE_LP_RING();
911
912         BEGIN_LP_RING(2);
913         OUT_RING( CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP );
914         OUT_RING( 0 );
915         ADVANCE_LP_RING();
916
917         /* Increment the frame counter.  The client-side 3D driver must
918          * throttle the framerate by waiting for this value before
919          * performing the swapbuffer ioctl.
920          */
921         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
922
923 }
924
925 static void i810_dma_quiescent(drm_device_t *dev)
926 {
927         drm_i810_private_t *dev_priv = dev->dev_private;
928         RING_LOCALS;
929
930 /*      printk("%s\n", __FUNCTION__); */
931
932         i810_kernel_lost_context(dev);
933
934         BEGIN_LP_RING(4);
935         OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
936         OUT_RING( CMD_REPORT_HEAD );
937         OUT_RING( 0 );
938         OUT_RING( 0 );
939         ADVANCE_LP_RING();
940
941         i810_wait_ring( dev, dev_priv->ring.Size - 8 );
942 }
943
944 static int i810_flush_queue(drm_device_t *dev)
945 {
946         drm_i810_private_t *dev_priv = dev->dev_private;
947         drm_device_dma_t *dma = dev->dma;
948         int i, ret = 0;
949         RING_LOCALS;
950         
951 /*      printk("%s\n", __FUNCTION__); */
952
953         i810_kernel_lost_context(dev);
954
955         BEGIN_LP_RING(2);
956         OUT_RING( CMD_REPORT_HEAD );
957         OUT_RING( 0 );
958         ADVANCE_LP_RING();
959
960         i810_wait_ring( dev, dev_priv->ring.Size - 8 );
961
962         for (i = 0; i < dma->buf_count; i++) {
963                 drm_buf_t *buf = dma->buflist[ i ];
964                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
965
966                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
967                                    I810_BUF_FREE);
968
969                 if (used == I810_BUF_HARDWARE)
970                         DRM_DEBUG("reclaimed from HARDWARE\n");
971                 if (used == I810_BUF_CLIENT)
972                         DRM_DEBUG("still on client\n");
973         }
974
975         return ret;
976 }
977
978 /* Must be called with the lock held */
979 void i810_reclaim_buffers(drm_device_t *dev, struct file *filp)
980 {
981         drm_device_dma_t *dma = dev->dma;
982         int              i;
983
984         if (!dma) return;
985         if (!dev->dev_private) return;
986         if (!dma->buflist) return;
987
988         i810_flush_queue(dev);
989
990         for (i = 0; i < dma->buf_count; i++) {
991                 drm_buf_t *buf = dma->buflist[ i ];
992                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
993
994                 if (buf->filp == filp && buf_priv) {
995                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
996                                            I810_BUF_FREE);
997
998                         if (used == I810_BUF_CLIENT)
999                                 DRM_DEBUG("reclaimed from client\n");
1000                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
1001                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
1002                 }
1003         }
1004 }
1005
1006 static int i810_flush_ioctl(struct inode *inode, struct file *filp,
1007                             unsigned int cmd, unsigned long arg)
1008 {
1009         drm_file_t        *priv   = filp->private_data;
1010         drm_device_t      *dev    = priv->head->dev;
1011
1012         LOCK_TEST_WITH_RETURN(dev, filp);
1013
1014         i810_flush_queue(dev);
1015         return 0;
1016 }
1017
1018
1019 static int i810_dma_vertex(struct inode *inode, struct file *filp,
1020                unsigned int cmd, unsigned long arg)
1021 {
1022         drm_file_t *priv = filp->private_data;
1023         drm_device_t *dev = priv->head->dev;
1024         drm_device_dma_t *dma = dev->dma;
1025         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1026         u32 *hw_status = dev_priv->hw_status_page;
1027         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1028                                         dev_priv->sarea_priv;
1029         drm_i810_vertex_t vertex;
1030
1031         if (copy_from_user(&vertex, (drm_i810_vertex_t __user *)arg, sizeof(vertex)))
1032                 return -EFAULT;
1033
1034         LOCK_TEST_WITH_RETURN(dev, filp);
1035
1036         DRM_DEBUG("i810 dma vertex, idx %d used %d discard %d\n",
1037                   vertex.idx, vertex.used, vertex.discard);
1038
1039         if (vertex.idx < 0 || vertex.idx > dma->buf_count) 
1040                 return -EINVAL;
1041
1042         i810_dma_dispatch_vertex( dev,
1043                                   dma->buflist[ vertex.idx ],
1044                                   vertex.discard, vertex.used );
1045
1046         atomic_add(vertex.used, &dev->counts[_DRM_STAT_SECONDARY]);
1047         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1048         sarea_priv->last_enqueue = dev_priv->counter-1;
1049         sarea_priv->last_dispatch = (int) hw_status[5];
1050
1051         return 0;
1052 }
1053
1054
1055
1056 static int i810_clear_bufs(struct inode *inode, struct file *filp,
1057                    unsigned int cmd, unsigned long arg)
1058 {
1059         drm_file_t *priv = filp->private_data;
1060         drm_device_t *dev = priv->head->dev;
1061         drm_i810_clear_t clear;
1062
1063         if (copy_from_user(&clear, (drm_i810_clear_t __user *)arg, sizeof(clear)))
1064                 return -EFAULT;
1065
1066         LOCK_TEST_WITH_RETURN(dev, filp);
1067
1068         /* GH: Someone's doing nasty things... */
1069         if (!dev->dev_private) {
1070                 return -EINVAL;
1071         }
1072
1073         i810_dma_dispatch_clear( dev, clear.flags,
1074                                  clear.clear_color,
1075                                  clear.clear_depth );
1076         return 0;
1077 }
1078
1079 static int i810_swap_bufs(struct inode *inode, struct file *filp,
1080                   unsigned int cmd, unsigned long arg)
1081 {
1082         drm_file_t *priv = filp->private_data;
1083         drm_device_t *dev = priv->head->dev;
1084
1085         DRM_DEBUG("i810_swap_bufs\n");
1086
1087         LOCK_TEST_WITH_RETURN(dev, filp);
1088
1089         i810_dma_dispatch_swap( dev );
1090         return 0;
1091 }
1092
1093 static int i810_getage(struct inode *inode, struct file *filp, unsigned int cmd,
1094                 unsigned long arg)
1095 {
1096         drm_file_t        *priv     = filp->private_data;
1097         drm_device_t      *dev      = priv->head->dev;
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         sarea_priv->last_dispatch = (int) hw_status[5];
1104         return 0;
1105 }
1106
1107 static int i810_getbuf(struct inode *inode, struct file *filp, unsigned int cmd,
1108                 unsigned long arg)
1109 {
1110         drm_file_t        *priv     = filp->private_data;
1111         drm_device_t      *dev      = priv->head->dev;
1112         int               retcode   = 0;
1113         drm_i810_dma_t    d;
1114         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1115         u32 *hw_status = dev_priv->hw_status_page;
1116         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1117                                         dev_priv->sarea_priv;
1118
1119         if (copy_from_user(&d, (drm_i810_dma_t __user *)arg, sizeof(d)))
1120                 return -EFAULT;
1121
1122         LOCK_TEST_WITH_RETURN(dev, filp);
1123
1124         d.granted = 0;
1125
1126         retcode = i810_dma_get_buffer(dev, &d, filp);
1127
1128         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1129                   current->pid, retcode, d.granted);
1130
1131         if (copy_to_user((drm_dma_t __user *)arg, &d, sizeof(d)))
1132                 return -EFAULT;
1133         sarea_priv->last_dispatch = (int) hw_status[5];
1134
1135         return retcode;
1136 }
1137
1138 static int i810_copybuf(struct inode *inode,
1139                          struct file *filp, unsigned int cmd, unsigned long arg)
1140 {
1141         /* Never copy - 2.4.x doesn't need it */
1142         return 0;
1143 }
1144
1145 static int i810_docopy(struct inode *inode, struct file *filp, unsigned int cmd,
1146                         unsigned long arg)
1147 {
1148         /* Never copy - 2.4.x doesn't need it */
1149         return 0;
1150 }
1151
1152 static void i810_dma_dispatch_mc(drm_device_t *dev, drm_buf_t *buf, int used,
1153                 unsigned int last_render)
1154 {
1155         drm_i810_private_t *dev_priv = dev->dev_private;
1156         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1157         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1158         unsigned long address = (unsigned long)buf->bus_address;
1159         unsigned long start = address - dev->agp->base;
1160         int u;
1161         RING_LOCALS;
1162
1163         i810_kernel_lost_context(dev);
1164
1165         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
1166                 I810_BUF_HARDWARE);
1167         if (u != I810_BUF_CLIENT) {
1168                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1169         }
1170
1171         if (used > 4*1024)
1172                 used = 0;
1173
1174         sarea_priv->dirty = 0x7f;
1175
1176         DRM_DEBUG("dispatch mc addr 0x%lx, used 0x%x\n",
1177                 address, used);
1178
1179         dev_priv->counter++;
1180         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1181         DRM_DEBUG("i810_dma_dispatch_mc\n");
1182         DRM_DEBUG("start : %lx\n", start);
1183         DRM_DEBUG("used : %d\n", used);
1184         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1185
1186         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1187                 if (used & 4) {
1188                         *(u32 *)((u32)buf_priv->virtual + used) = 0;
1189                         used += 4;
1190                 }
1191
1192                 i810_unmap_buffer(buf);
1193         }
1194         BEGIN_LP_RING(4);
1195         OUT_RING( CMD_OP_BATCH_BUFFER );
1196         OUT_RING( start | BB1_PROTECTED );
1197         OUT_RING( start + used - 4 );
1198         OUT_RING( 0 );
1199         ADVANCE_LP_RING();
1200
1201
1202         BEGIN_LP_RING(8);
1203         OUT_RING( CMD_STORE_DWORD_IDX );
1204         OUT_RING( buf_priv->my_use_idx );
1205         OUT_RING( I810_BUF_FREE );
1206         OUT_RING( 0 );
1207
1208         OUT_RING( CMD_STORE_DWORD_IDX );
1209         OUT_RING( 16 );
1210         OUT_RING( last_render );
1211         OUT_RING( 0 );
1212         ADVANCE_LP_RING();
1213 }
1214
1215 static int i810_dma_mc(struct inode *inode, struct file *filp,
1216         unsigned int cmd, unsigned long arg)
1217 {
1218         drm_file_t *priv = filp->private_data;
1219         drm_device_t *dev = priv->head->dev;
1220         drm_device_dma_t *dma = dev->dma;
1221         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1222         u32 *hw_status = dev_priv->hw_status_page;
1223         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1224                 dev_priv->sarea_priv;
1225         drm_i810_mc_t mc;
1226
1227         if (copy_from_user(&mc, (drm_i810_mc_t __user *)arg, sizeof(mc)))
1228                 return -EFAULT;
1229
1230         LOCK_TEST_WITH_RETURN(dev, filp);
1231
1232         if (mc.idx >= dma->buf_count || mc.idx < 0)
1233                 return -EINVAL;
1234
1235         i810_dma_dispatch_mc(dev, dma->buflist[mc.idx], mc.used,
1236                 mc.last_render );
1237
1238         atomic_add(mc.used, &dev->counts[_DRM_STAT_SECONDARY]);
1239         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1240         sarea_priv->last_enqueue = dev_priv->counter-1;
1241         sarea_priv->last_dispatch = (int) hw_status[5];
1242
1243         return 0;
1244 }
1245
1246 static int i810_rstatus(struct inode *inode, struct file *filp,
1247                         unsigned int cmd, unsigned long arg)
1248 {
1249         drm_file_t *priv = filp->private_data;
1250         drm_device_t *dev = priv->head->dev;
1251         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1252
1253         return (int)(((u32 *)(dev_priv->hw_status_page))[4]);
1254 }
1255
1256 static int i810_ov0_info(struct inode *inode, struct file *filp,
1257                         unsigned int cmd, unsigned long arg)
1258 {
1259         drm_file_t *priv = filp->private_data;
1260         drm_device_t *dev = priv->head->dev;
1261         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1262         drm_i810_overlay_t data;
1263
1264         data.offset = dev_priv->overlay_offset;
1265         data.physical = dev_priv->overlay_physical;
1266         if (copy_to_user((drm_i810_overlay_t __user *)arg,&data,sizeof(data)))
1267                 return -EFAULT;
1268         return 0;
1269 }
1270
1271 static int i810_fstatus(struct inode *inode, struct file *filp,
1272                         unsigned int cmd, unsigned long arg)
1273 {
1274         drm_file_t *priv = filp->private_data;
1275         drm_device_t *dev = priv->head->dev;
1276         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1277
1278         LOCK_TEST_WITH_RETURN(dev, filp);
1279
1280         return I810_READ(0x30008);
1281 }
1282
1283 static int i810_ov0_flip(struct inode *inode, struct file *filp,
1284                         unsigned int cmd, unsigned long arg)
1285 {
1286         drm_file_t *priv = filp->private_data;
1287         drm_device_t *dev = priv->head->dev;
1288         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1289
1290         LOCK_TEST_WITH_RETURN(dev, filp);
1291
1292         //Tell the overlay to update
1293         I810_WRITE(0x30000,dev_priv->overlay_physical | 0x80000000);
1294
1295         return 0;
1296 }
1297
1298
1299 /* Not sure why this isn't set all the time:
1300  */ 
1301 static void i810_do_init_pageflip( drm_device_t *dev )
1302 {
1303         drm_i810_private_t *dev_priv = dev->dev_private;
1304         
1305         DRM_DEBUG("%s\n", __FUNCTION__);
1306         dev_priv->page_flipping = 1;
1307         dev_priv->current_page = 0;
1308         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1309 }
1310
1311 static int i810_do_cleanup_pageflip( drm_device_t *dev )
1312 {
1313         drm_i810_private_t *dev_priv = dev->dev_private;
1314
1315         DRM_DEBUG("%s\n", __FUNCTION__);
1316         if (dev_priv->current_page != 0)
1317                 i810_dma_dispatch_flip( dev );
1318
1319         dev_priv->page_flipping = 0;
1320         return 0;
1321 }
1322
1323 static int i810_flip_bufs(struct inode *inode, struct file *filp,
1324                         unsigned int cmd, unsigned long arg)
1325 {
1326         drm_file_t *priv = filp->private_data;
1327         drm_device_t *dev = priv->head->dev;
1328         drm_i810_private_t *dev_priv = dev->dev_private;
1329
1330         DRM_DEBUG("%s\n", __FUNCTION__);
1331
1332         LOCK_TEST_WITH_RETURN(dev, filp);
1333
1334         if (!dev_priv->page_flipping) 
1335                 i810_do_init_pageflip( dev );
1336
1337         i810_dma_dispatch_flip( dev );
1338         return 0;
1339 }
1340
1341 void i810_driver_pretakedown(drm_device_t *dev)
1342 {
1343         i810_dma_cleanup( dev );
1344 }
1345
1346 void i810_driver_prerelease(drm_device_t *dev, DRMFILE filp)
1347 {
1348         if (dev->dev_private) {
1349                 drm_i810_private_t *dev_priv = dev->dev_private;
1350                 if (dev_priv->page_flipping) {
1351                         i810_do_cleanup_pageflip(dev);
1352                 }
1353         }
1354 }
1355
1356 void i810_driver_release(drm_device_t *dev, struct file *filp)
1357 {
1358         i810_reclaim_buffers(dev, filp);
1359 }
1360
1361 int i810_driver_dma_quiescent(drm_device_t *dev)
1362 {
1363         i810_dma_quiescent( dev );
1364         return 0;
1365 }
1366
1367 drm_ioctl_desc_t i810_ioctls[] = {
1368         [DRM_IOCTL_NR(DRM_I810_INIT)]    = { i810_dma_init,    1, 1 },
1369         [DRM_IOCTL_NR(DRM_I810_VERTEX)]  = { i810_dma_vertex,  1, 0 },
1370         [DRM_IOCTL_NR(DRM_I810_CLEAR)]   = { i810_clear_bufs,  1, 0 },
1371         [DRM_IOCTL_NR(DRM_I810_FLUSH)]   = { i810_flush_ioctl, 1, 0 },
1372         [DRM_IOCTL_NR(DRM_I810_GETAGE)]  = { i810_getage,      1, 0 },
1373         [DRM_IOCTL_NR(DRM_I810_GETBUF)]  = { i810_getbuf,      1, 0 },
1374         [DRM_IOCTL_NR(DRM_I810_SWAP)]    = { i810_swap_bufs,   1, 0 },
1375         [DRM_IOCTL_NR(DRM_I810_COPY)]    = { i810_copybuf,     1, 0 },
1376         [DRM_IOCTL_NR(DRM_I810_DOCOPY)]  = { i810_docopy,      1, 0 },
1377         [DRM_IOCTL_NR(DRM_I810_OV0INFO)] = { i810_ov0_info,    1, 0 },
1378         [DRM_IOCTL_NR(DRM_I810_FSTATUS)] = { i810_fstatus,     1, 0 },
1379         [DRM_IOCTL_NR(DRM_I810_OV0FLIP)] = { i810_ov0_flip,    1, 0 },
1380         [DRM_IOCTL_NR(DRM_I810_MC)]      = { i810_dma_mc,      1, 1 },
1381         [DRM_IOCTL_NR(DRM_I810_RSTATUS)] = { i810_rstatus,     1, 0 },
1382         [DRM_IOCTL_NR(DRM_I810_FLIP)]    = { i810_flip_bufs,   1, 0 }
1383 };
1384
1385 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1386
1387 /**
1388  * Determine if the device really is AGP or not.
1389  *
1390  * All Intel graphics chipsets are treated as AGP, even if they are really
1391  * PCI-e.
1392  *
1393  * \param dev   The device to be tested.
1394  *
1395  * \returns
1396  * A value of 1 is always retured to indictate every i810 is AGP.
1397  */
1398 int i810_driver_device_is_agp(drm_device_t * dev)
1399 {
1400         return 1;
1401 }