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drm: reorganise drm tree to be more future proof.
[linux-2.6/linux-loongson.git] / drivers / gpu / drm / i830 / i830_dma.c
bloba86ab30b4620b14dffe1cb11009f3d0ababf0a21
1 /* i830_dma.c -- DMA support for the I830 -*- 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 * Abraham vd Merwe <abraham@2d3d.co.za>
31 *
32 */
33
34 #include "drmP.h"
35 #include "drm.h"
36 #include "i830_drm.h"
37 #include "i830_drv.h"
38 #include <linux/interrupt.h> /* For task queue support */
39 #include <linux/pagemap.h>
40 #include <linux/delay.h>
41 #include <asm/uaccess.h>
42
43 #define I830_BUF_FREE 2
44 #define I830_BUF_CLIENT 1
45 #define I830_BUF_HARDWARE 0
46
47 #define I830_BUF_UNMAPPED 0
48 #define I830_BUF_MAPPED 1
49
50 static struct drm_buf *i830_freelist_get(struct drm_device * dev)
51 {
52 struct drm_device_dma *dma = dev->dma;
53 int i;
54 int used;
55
56 /* Linear search might not be the best solution */
57
58 for (i = 0; i < dma->buf_count; i++) {
59 struct drm_buf *buf = dma->buflist[i];
60 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
61 /* In use is already a pointer */
62 used = cmpxchg(buf_priv->in_use, I830_BUF_FREE,
63 I830_BUF_CLIENT);
64 if (used == I830_BUF_FREE) {
65 return buf;
66 }
67 }
68 return NULL;
69 }
70
71 /* This should only be called if the buffer is not sent to the hardware
72 * yet, the hardware updates in use for us once its on the ring buffer.
73 */
74
75 static int i830_freelist_put(struct drm_device * dev, struct drm_buf * buf)
76 {
77 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
78 int used;
79
80 /* In use is already a pointer */
81 used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, I830_BUF_FREE);
82 if (used != I830_BUF_CLIENT) {
83 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
84 return -EINVAL;
85 }
86
87 return 0;
88 }
89
90 static int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
91 {
92 struct drm_file *priv = filp->private_data;
93 struct drm_device *dev;
94 drm_i830_private_t *dev_priv;
95 struct drm_buf *buf;
96 drm_i830_buf_priv_t *buf_priv;
97
98 lock_kernel();
99 dev = priv->minor->dev;
100 dev_priv = dev->dev_private;
101 buf = dev_priv->mmap_buffer;
102 buf_priv = buf->dev_private;
103
104 vma->vm_flags |= (VM_IO | VM_DONTCOPY);
105 vma->vm_file = filp;
106
107 buf_priv->currently_mapped = I830_BUF_MAPPED;
108 unlock_kernel();
109
110 if (io_remap_pfn_range(vma, vma->vm_start,
111 vma->vm_pgoff,
112 vma->vm_end - vma->vm_start, vma->vm_page_prot))
113 return -EAGAIN;
114 return 0;
115 }
116
117 static const struct file_operations i830_buffer_fops = {
118 .open = drm_open,
119 .release = drm_release,
120 .ioctl = drm_ioctl,
121 .mmap = i830_mmap_buffers,
122 .fasync = drm_fasync,
123 };
124
125 static int i830_map_buffer(struct drm_buf * buf, struct drm_file *file_priv)
126 {
127 struct drm_device *dev = file_priv->minor->dev;
128 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
129 drm_i830_private_t *dev_priv = dev->dev_private;
130 const struct file_operations *old_fops;
131 unsigned long virtual;
132 int retcode = 0;
133
134 if (buf_priv->currently_mapped == I830_BUF_MAPPED)
135 return -EINVAL;
136
137 down_write(&current->mm->mmap_sem);
138 old_fops = file_priv->filp->f_op;
139 file_priv->filp->f_op = &i830_buffer_fops;
140 dev_priv->mmap_buffer = buf;
141 virtual = do_mmap(file_priv->filp, 0, buf->total, PROT_READ | PROT_WRITE,
142 MAP_SHARED, buf->bus_address);
143 dev_priv->mmap_buffer = NULL;
144 file_priv->filp->f_op = old_fops;
145 if (IS_ERR((void *)virtual)) { /* ugh */
146 /* Real error */
147 DRM_ERROR("mmap error\n");
148 retcode = PTR_ERR((void *)virtual);
149 buf_priv->virtual = NULL;
150 } else {
151 buf_priv->virtual = (void __user *)virtual;
152 }
153 up_write(&current->mm->mmap_sem);
154
155 return retcode;
156 }
157
158 static int i830_unmap_buffer(struct drm_buf * buf)
159 {
160 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
161 int retcode = 0;
162
163 if (buf_priv->currently_mapped != I830_BUF_MAPPED)
164 return -EINVAL;
165
166 down_write(&current->mm->mmap_sem);
167 retcode = do_munmap(current->mm,
168 (unsigned long)buf_priv->virtual,
169 (size_t) buf->total);
170 up_write(&current->mm->mmap_sem);
171
172 buf_priv->currently_mapped = I830_BUF_UNMAPPED;
173 buf_priv->virtual = NULL;
174
175 return retcode;
176 }
177
178 static int i830_dma_get_buffer(struct drm_device * dev, drm_i830_dma_t * d,
179 struct drm_file *file_priv)
180 {
181 struct drm_buf *buf;
182 drm_i830_buf_priv_t *buf_priv;
183 int retcode = 0;
184
185 buf = i830_freelist_get(dev);
186 if (!buf) {
187 retcode = -ENOMEM;
188 DRM_DEBUG("retcode=%d\n", retcode);
189 return retcode;
190 }
191
192 retcode = i830_map_buffer(buf, file_priv);
193 if (retcode) {
194 i830_freelist_put(dev, buf);
195 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
196 return retcode;
197 }
198 buf->file_priv = file_priv;
199 buf_priv = buf->dev_private;
200 d->granted = 1;
201 d->request_idx = buf->idx;
202 d->request_size = buf->total;
203 d->virtual = buf_priv->virtual;
204
205 return retcode;
206 }
207
208 static int i830_dma_cleanup(struct drm_device * dev)
209 {
210 struct drm_device_dma *dma = dev->dma;
211
212 /* Make sure interrupts are disabled here because the uninstall ioctl
213 * may not have been called from userspace and after dev_private
214 * is freed, it's too late.
215 */
216 if (dev->irq_enabled)
217 drm_irq_uninstall(dev);
218
219 if (dev->dev_private) {
220 int i;
221 drm_i830_private_t *dev_priv =
222 (drm_i830_private_t *) dev->dev_private;
223
224 if (dev_priv->ring.virtual_start) {
225 drm_core_ioremapfree(&dev_priv->ring.map, dev);
226 }
227 if (dev_priv->hw_status_page) {
228 pci_free_consistent(dev->pdev, PAGE_SIZE,
229 dev_priv->hw_status_page,
230 dev_priv->dma_status_page);
231 /* Need to rewrite hardware status page */
232 I830_WRITE(0x02080, 0x1ffff000);
233 }
234
235 drm_free(dev->dev_private, sizeof(drm_i830_private_t),
236 DRM_MEM_DRIVER);
237 dev->dev_private = NULL;
238
239 for (i = 0; i < dma->buf_count; i++) {
240 struct drm_buf *buf = dma->buflist[i];
241 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
242 if (buf_priv->kernel_virtual && buf->total)
243 drm_core_ioremapfree(&buf_priv->map, dev);
244 }
245 }
246 return 0;
247 }
248
249 int i830_wait_ring(struct drm_device * dev, int n, const char *caller)
250 {
251 drm_i830_private_t *dev_priv = dev->dev_private;
252 drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
253 int iters = 0;
254 unsigned long end;
255 unsigned int last_head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
256
257 end = jiffies + (HZ * 3);
258 while (ring->space < n) {
259 ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
260 ring->space = ring->head - (ring->tail + 8);
261 if (ring->space < 0)
262 ring->space += ring->Size;
263
264 if (ring->head != last_head) {
265 end = jiffies + (HZ * 3);
266 last_head = ring->head;
267 }
268
269 iters++;
270 if (time_before(end, jiffies)) {
271 DRM_ERROR("space: %d wanted %d\n", ring->space, n);
272 DRM_ERROR("lockup\n");
273 goto out_wait_ring;
274 }
275 udelay(1);
276 dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT;
277 }
278
279 out_wait_ring:
280 return iters;
281 }
282
283 static void i830_kernel_lost_context(struct drm_device * dev)
284 {
285 drm_i830_private_t *dev_priv = dev->dev_private;
286 drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
287
288 ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
289 ring->tail = I830_READ(LP_RING + RING_TAIL) & TAIL_ADDR;
290 ring->space = ring->head - (ring->tail + 8);
291 if (ring->space < 0)
292 ring->space += ring->Size;
293
294 if (ring->head == ring->tail)
295 dev_priv->sarea_priv->perf_boxes |= I830_BOX_RING_EMPTY;
296 }
297
298 static int i830_freelist_init(struct drm_device * dev, drm_i830_private_t * dev_priv)
299 {
300 struct drm_device_dma *dma = dev->dma;
301 int my_idx = 36;
302 u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
303 int i;
304
305 if (dma->buf_count > 1019) {
306 /* Not enough space in the status page for the freelist */
307 return -EINVAL;
308 }
309
310 for (i = 0; i < dma->buf_count; i++) {
311 struct drm_buf *buf = dma->buflist[i];
312 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
313
314 buf_priv->in_use = hw_status++;
315 buf_priv->my_use_idx = my_idx;
316 my_idx += 4;
317
318 *buf_priv->in_use = I830_BUF_FREE;
319
320 buf_priv->map.offset = buf->bus_address;
321 buf_priv->map.size = buf->total;
322 buf_priv->map.type = _DRM_AGP;
323 buf_priv->map.flags = 0;
324 buf_priv->map.mtrr = 0;
325
326 drm_core_ioremap(&buf_priv->map, dev);
327 buf_priv->kernel_virtual = buf_priv->map.handle;
328 }
329 return 0;
330 }
331
332 static int i830_dma_initialize(struct drm_device * dev,
333 drm_i830_private_t * dev_priv,
334 drm_i830_init_t * init)
335 {
336 struct drm_map_list *r_list;
337
338 memset(dev_priv, 0, sizeof(drm_i830_private_t));
339
340 list_for_each_entry(r_list, &dev->maplist, head) {
341 if (r_list->map &&
342 r_list->map->type == _DRM_SHM &&
343 r_list->map->flags & _DRM_CONTAINS_LOCK) {
344 dev_priv->sarea_map = r_list->map;
345 break;
346 }
347 }
348
349 if (!dev_priv->sarea_map) {
350 dev->dev_private = (void *)dev_priv;
351 i830_dma_cleanup(dev);
352 DRM_ERROR("can not find sarea!\n");
353 return -EINVAL;
354 }
355 dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
356 if (!dev_priv->mmio_map) {
357 dev->dev_private = (void *)dev_priv;
358 i830_dma_cleanup(dev);
359 DRM_ERROR("can not find mmio map!\n");
360 return -EINVAL;
361 }
362 dev->agp_buffer_token = init->buffers_offset;
363 dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
364 if (!dev->agp_buffer_map) {
365 dev->dev_private = (void *)dev_priv;
366 i830_dma_cleanup(dev);
367 DRM_ERROR("can not find dma buffer map!\n");
368 return -EINVAL;
369 }
370
371 dev_priv->sarea_priv = (drm_i830_sarea_t *)
372 ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
373
374 dev_priv->ring.Start = init->ring_start;
375 dev_priv->ring.End = init->ring_end;
376 dev_priv->ring.Size = init->ring_size;
377
378 dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
379 dev_priv->ring.map.size = init->ring_size;
380 dev_priv->ring.map.type = _DRM_AGP;
381 dev_priv->ring.map.flags = 0;
382 dev_priv->ring.map.mtrr = 0;
383
384 drm_core_ioremap(&dev_priv->ring.map, dev);
385
386 if (dev_priv->ring.map.handle == NULL) {
387 dev->dev_private = (void *)dev_priv;
388 i830_dma_cleanup(dev);
389 DRM_ERROR("can not ioremap virtual address for"
390 " ring buffer\n");
391 return -ENOMEM;
392 }
393
394 dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
395
396 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
397
398 dev_priv->w = init->w;
399 dev_priv->h = init->h;
400 dev_priv->pitch = init->pitch;
401 dev_priv->back_offset = init->back_offset;
402 dev_priv->depth_offset = init->depth_offset;
403 dev_priv->front_offset = init->front_offset;
404
405 dev_priv->front_di1 = init->front_offset | init->pitch_bits;
406 dev_priv->back_di1 = init->back_offset | init->pitch_bits;
407 dev_priv->zi1 = init->depth_offset | init->pitch_bits;
408
409 DRM_DEBUG("front_di1 %x\n", dev_priv->front_di1);
410 DRM_DEBUG("back_offset %x\n", dev_priv->back_offset);
411 DRM_DEBUG("back_di1 %x\n", dev_priv->back_di1);
412 DRM_DEBUG("pitch_bits %x\n", init->pitch_bits);
413
414 dev_priv->cpp = init->cpp;
415 /* We are using separate values as placeholders for mechanisms for
416 * private backbuffer/depthbuffer usage.
417 */
418
419 dev_priv->back_pitch = init->back_pitch;
420 dev_priv->depth_pitch = init->depth_pitch;
421 dev_priv->do_boxes = 0;
422 dev_priv->use_mi_batchbuffer_start = 0;
423
424 /* Program Hardware Status Page */
425 dev_priv->hw_status_page =
426 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
427 &dev_priv->dma_status_page);
428 if (!dev_priv->hw_status_page) {
429 dev->dev_private = (void *)dev_priv;
430 i830_dma_cleanup(dev);
431 DRM_ERROR("Can not allocate hardware status page\n");
432 return -ENOMEM;
433 }
434 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
435 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
436
437 I830_WRITE(0x02080, dev_priv->dma_status_page);
438 DRM_DEBUG("Enabled hardware status page\n");
439
440 /* Now we need to init our freelist */
441 if (i830_freelist_init(dev, dev_priv) != 0) {
442 dev->dev_private = (void *)dev_priv;
443 i830_dma_cleanup(dev);
444 DRM_ERROR("Not enough space in the status page for"
445 " the freelist\n");
446 return -ENOMEM;
447 }
448 dev->dev_private = (void *)dev_priv;
449
450 return 0;
451 }
452
453 static int i830_dma_init(struct drm_device *dev, void *data,
454 struct drm_file *file_priv)
455 {
456 drm_i830_private_t *dev_priv;
457 drm_i830_init_t *init = data;
458 int retcode = 0;
459
460 switch (init->func) {
461 case I830_INIT_DMA:
462 dev_priv = drm_alloc(sizeof(drm_i830_private_t),
463 DRM_MEM_DRIVER);
464 if (dev_priv == NULL)
465 return -ENOMEM;
466 retcode = i830_dma_initialize(dev, dev_priv, init);
467 break;
468 case I830_CLEANUP_DMA:
469 retcode = i830_dma_cleanup(dev);
470 break;
471 default:
472 retcode = -EINVAL;
473 break;
474 }
475
476 return retcode;
477 }
478
479 #define GFX_OP_STIPPLE ((0x3<<29)|(0x1d<<24)|(0x83<<16))
480 #define ST1_ENABLE (1<<16)
481 #define ST1_MASK (0xffff)
482
483 /* Most efficient way to verify state for the i830 is as it is
484 * emitted. Non-conformant state is silently dropped.
485 */
486 static void i830EmitContextVerified(struct drm_device * dev, unsigned int *code)
487 {
488 drm_i830_private_t *dev_priv = dev->dev_private;
489 int i, j = 0;
490 unsigned int tmp;
491 RING_LOCALS;
492
493 BEGIN_LP_RING(I830_CTX_SETUP_SIZE + 4);
494
495 for (i = 0; i < I830_CTXREG_BLENDCOLR0; i++) {
496 tmp = code[i];
497 if ((tmp & (7 << 29)) == CMD_3D &&
498 (tmp & (0x1f << 24)) < (0x1d << 24)) {
499 OUT_RING(tmp);
500 j++;
501 } else {
502 DRM_ERROR("Skipping %d\n", i);
503 }
504 }
505
506 OUT_RING(STATE3D_CONST_BLEND_COLOR_CMD);
507 OUT_RING(code[I830_CTXREG_BLENDCOLR]);
508 j += 2;
509
510 for (i = I830_CTXREG_VF; i < I830_CTXREG_MCSB0; i++) {
511 tmp = code[i];
512 if ((tmp & (7 << 29)) == CMD_3D &&
513 (tmp & (0x1f << 24)) < (0x1d << 24)) {
514 OUT_RING(tmp);
515 j++;
516 } else {
517 DRM_ERROR("Skipping %d\n", i);
518 }
519 }
520
521 OUT_RING(STATE3D_MAP_COORD_SETBIND_CMD);
522 OUT_RING(code[I830_CTXREG_MCSB1]);
523 j += 2;
524
525 if (j & 1)
526 OUT_RING(0);
527
528 ADVANCE_LP_RING();
529 }
530
531 static void i830EmitTexVerified(struct drm_device * dev, unsigned int *code)
532 {
533 drm_i830_private_t *dev_priv = dev->dev_private;
534 int i, j = 0;
535 unsigned int tmp;
536 RING_LOCALS;
537
538 if (code[I830_TEXREG_MI0] == GFX_OP_MAP_INFO ||
539 (code[I830_TEXREG_MI0] & ~(0xf * LOAD_TEXTURE_MAP0)) ==
540 (STATE3D_LOAD_STATE_IMMEDIATE_2 | 4)) {
541
542 BEGIN_LP_RING(I830_TEX_SETUP_SIZE);
543
544 OUT_RING(code[I830_TEXREG_MI0]); /* TM0LI */
545 OUT_RING(code[I830_TEXREG_MI1]); /* TM0S0 */
546 OUT_RING(code[I830_TEXREG_MI2]); /* TM0S1 */
547 OUT_RING(code[I830_TEXREG_MI3]); /* TM0S2 */
548 OUT_RING(code[I830_TEXREG_MI4]); /* TM0S3 */
549 OUT_RING(code[I830_TEXREG_MI5]); /* TM0S4 */
550
551 for (i = 6; i < I830_TEX_SETUP_SIZE; i++) {
552 tmp = code[i];
553 OUT_RING(tmp);
554 j++;
555 }
556
557 if (j & 1)
558 OUT_RING(0);
559
560 ADVANCE_LP_RING();
561 } else
562 printk("rejected packet %x\n", code[0]);
563 }
564
565 static void i830EmitTexBlendVerified(struct drm_device * dev,
566 unsigned int *code, unsigned int num)
567 {
568 drm_i830_private_t *dev_priv = dev->dev_private;
569 int i, j = 0;
570 unsigned int tmp;
571 RING_LOCALS;
572
573 if (!num)
574 return;
575
576 BEGIN_LP_RING(num + 1);
577
578 for (i = 0; i < num; i++) {
579 tmp = code[i];
580 OUT_RING(tmp);
581 j++;
582 }
583
584 if (j & 1)
585 OUT_RING(0);
586
587 ADVANCE_LP_RING();
588 }
589
590 static void i830EmitTexPalette(struct drm_device * dev,
591 unsigned int *palette, int number, int is_shared)
592 {
593 drm_i830_private_t *dev_priv = dev->dev_private;
594 int i;
595 RING_LOCALS;
596
597 return;
598
599 BEGIN_LP_RING(258);
600
601 if (is_shared == 1) {
602 OUT_RING(CMD_OP_MAP_PALETTE_LOAD |
603 MAP_PALETTE_NUM(0) | MAP_PALETTE_BOTH);
604 } else {
605 OUT_RING(CMD_OP_MAP_PALETTE_LOAD | MAP_PALETTE_NUM(number));
606 }
607 for (i = 0; i < 256; i++) {
608 OUT_RING(palette[i]);
609 }
610 OUT_RING(0);
611 /* KW: WHERE IS THE ADVANCE_LP_RING? This is effectively a noop!
612 */
613 }
614
615 /* Need to do some additional checking when setting the dest buffer.
616 */
617 static void i830EmitDestVerified(struct drm_device * dev, unsigned int *code)
618 {
619 drm_i830_private_t *dev_priv = dev->dev_private;
620 unsigned int tmp;
621 RING_LOCALS;
622
623 BEGIN_LP_RING(I830_DEST_SETUP_SIZE + 10);
624
625 tmp = code[I830_DESTREG_CBUFADDR];
626 if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
627 if (((int)outring) & 8) {
628 OUT_RING(0);
629 OUT_RING(0);
630 }
631
632 OUT_RING(CMD_OP_DESTBUFFER_INFO);
633 OUT_RING(BUF_3D_ID_COLOR_BACK |
634 BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) |
635 BUF_3D_USE_FENCE);
636 OUT_RING(tmp);
637 OUT_RING(0);
638
639 OUT_RING(CMD_OP_DESTBUFFER_INFO);
640 OUT_RING(BUF_3D_ID_DEPTH | BUF_3D_USE_FENCE |
641 BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp));
642 OUT_RING(dev_priv->zi1);
643 OUT_RING(0);
644 } else {
645 DRM_ERROR("bad di1 %x (allow %x or %x)\n",
646 tmp, dev_priv->front_di1, dev_priv->back_di1);
647 }
648
649 /* invarient:
650 */
651
652 OUT_RING(GFX_OP_DESTBUFFER_VARS);
653 OUT_RING(code[I830_DESTREG_DV1]);
654
655 OUT_RING(GFX_OP_DRAWRECT_INFO);
656 OUT_RING(code[I830_DESTREG_DR1]);
657 OUT_RING(code[I830_DESTREG_DR2]);
658 OUT_RING(code[I830_DESTREG_DR3]);
659 OUT_RING(code[I830_DESTREG_DR4]);
660
661 /* Need to verify this */
662 tmp = code[I830_DESTREG_SENABLE];
663 if ((tmp & ~0x3) == GFX_OP_SCISSOR_ENABLE) {
664 OUT_RING(tmp);
665 } else {
666 DRM_ERROR("bad scissor enable\n");
667 OUT_RING(0);
668 }
669
670 OUT_RING(GFX_OP_SCISSOR_RECT);
671 OUT_RING(code[I830_DESTREG_SR1]);
672 OUT_RING(code[I830_DESTREG_SR2]);
673 OUT_RING(0);
674
675 ADVANCE_LP_RING();
676 }
677
678 static void i830EmitStippleVerified(struct drm_device * dev, unsigned int *code)
679 {
680 drm_i830_private_t *dev_priv = dev->dev_private;
681 RING_LOCALS;
682
683 BEGIN_LP_RING(2);
684 OUT_RING(GFX_OP_STIPPLE);
685 OUT_RING(code[1]);
686 ADVANCE_LP_RING();
687 }
688
689 static void i830EmitState(struct drm_device * dev)
690 {
691 drm_i830_private_t *dev_priv = dev->dev_private;
692 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
693 unsigned int dirty = sarea_priv->dirty;
694
695 DRM_DEBUG("%s %x\n", __func__, dirty);
696
697 if (dirty & I830_UPLOAD_BUFFERS) {
698 i830EmitDestVerified(dev, sarea_priv->BufferState);
699 sarea_priv->dirty &= ~I830_UPLOAD_BUFFERS;
700 }
701
702 if (dirty & I830_UPLOAD_CTX) {
703 i830EmitContextVerified(dev, sarea_priv->ContextState);
704 sarea_priv->dirty &= ~I830_UPLOAD_CTX;
705 }
706
707 if (dirty & I830_UPLOAD_TEX0) {
708 i830EmitTexVerified(dev, sarea_priv->TexState[0]);
709 sarea_priv->dirty &= ~I830_UPLOAD_TEX0;
710 }
711
712 if (dirty & I830_UPLOAD_TEX1) {
713 i830EmitTexVerified(dev, sarea_priv->TexState[1]);
714 sarea_priv->dirty &= ~I830_UPLOAD_TEX1;
715 }
716
717 if (dirty & I830_UPLOAD_TEXBLEND0) {
718 i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[0],
719 sarea_priv->TexBlendStateWordsUsed[0]);
720 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND0;
721 }
722
723 if (dirty & I830_UPLOAD_TEXBLEND1) {
724 i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[1],
725 sarea_priv->TexBlendStateWordsUsed[1]);
726 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND1;
727 }
728
729 if (dirty & I830_UPLOAD_TEX_PALETTE_SHARED) {
730 i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 1);
731 } else {
732 if (dirty & I830_UPLOAD_TEX_PALETTE_N(0)) {
733 i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 0);
734 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(0);
735 }
736 if (dirty & I830_UPLOAD_TEX_PALETTE_N(1)) {
737 i830EmitTexPalette(dev, sarea_priv->Palette[1], 1, 0);
738 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(1);
739 }
740
741 /* 1.3:
742 */
743 #if 0
744 if (dirty & I830_UPLOAD_TEX_PALETTE_N(2)) {
745 i830EmitTexPalette(dev, sarea_priv->Palette2[0], 0, 0);
746 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
747 }
748 if (dirty & I830_UPLOAD_TEX_PALETTE_N(3)) {
749 i830EmitTexPalette(dev, sarea_priv->Palette2[1], 1, 0);
750 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
751 }
752 #endif
753 }
754
755 /* 1.3:
756 */
757 if (dirty & I830_UPLOAD_STIPPLE) {
758 i830EmitStippleVerified(dev, sarea_priv->StippleState);
759 sarea_priv->dirty &= ~I830_UPLOAD_STIPPLE;
760 }
761
762 if (dirty & I830_UPLOAD_TEX2) {
763 i830EmitTexVerified(dev, sarea_priv->TexState2);
764 sarea_priv->dirty &= ~I830_UPLOAD_TEX2;
765 }
766
767 if (dirty & I830_UPLOAD_TEX3) {
768 i830EmitTexVerified(dev, sarea_priv->TexState3);
769 sarea_priv->dirty &= ~I830_UPLOAD_TEX3;
770 }
771
772 if (dirty & I830_UPLOAD_TEXBLEND2) {
773 i830EmitTexBlendVerified(dev,
774 sarea_priv->TexBlendState2,
775 sarea_priv->TexBlendStateWordsUsed2);
776
777 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND2;
778 }
779
780 if (dirty & I830_UPLOAD_TEXBLEND3) {
781 i830EmitTexBlendVerified(dev,
782 sarea_priv->TexBlendState3,
783 sarea_priv->TexBlendStateWordsUsed3);
784 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND3;
785 }
786 }
787
788 /* ================================================================
789 * Performance monitoring functions
790 */
791
792 static void i830_fill_box(struct drm_device * dev,
793 int x, int y, int w, int h, int r, int g, int b)
794 {
795 drm_i830_private_t *dev_priv = dev->dev_private;
796 u32 color;
797 unsigned int BR13, CMD;
798 RING_LOCALS;
799
800 BR13 = (0xF0 << 16) | (dev_priv->pitch * dev_priv->cpp) | (1 << 24);
801 CMD = XY_COLOR_BLT_CMD;
802 x += dev_priv->sarea_priv->boxes[0].x1;
803 y += dev_priv->sarea_priv->boxes[0].y1;
804
805 if (dev_priv->cpp == 4) {
806 BR13 |= (1 << 25);
807 CMD |= (XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB);
808 color = (((0xff) << 24) | (r << 16) | (g << 8) | b);
809 } else {
810 color = (((r & 0xf8) << 8) |
811 ((g & 0xfc) << 3) | ((b & 0xf8) >> 3));
812 }
813
814 BEGIN_LP_RING(6);
815 OUT_RING(CMD);
816 OUT_RING(BR13);
817 OUT_RING((y << 16) | x);
818 OUT_RING(((y + h) << 16) | (x + w));
819
820 if (dev_priv->current_page == 1) {
821 OUT_RING(dev_priv->front_offset);
822 } else {
823 OUT_RING(dev_priv->back_offset);
824 }
825
826 OUT_RING(color);
827 ADVANCE_LP_RING();
828 }
829
830 static void i830_cp_performance_boxes(struct drm_device * dev)
831 {
832 drm_i830_private_t *dev_priv = dev->dev_private;
833
834 /* Purple box for page flipping
835 */
836 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_FLIP)
837 i830_fill_box(dev, 4, 4, 8, 8, 255, 0, 255);
838
839 /* Red box if we have to wait for idle at any point
840 */
841 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_WAIT)
842 i830_fill_box(dev, 16, 4, 8, 8, 255, 0, 0);
843
844 /* Blue box: lost context?
845 */
846 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_LOST_CONTEXT)
847 i830_fill_box(dev, 28, 4, 8, 8, 0, 0, 255);
848
849 /* Yellow box for texture swaps
850 */
851 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_TEXTURE_LOAD)
852 i830_fill_box(dev, 40, 4, 8, 8, 255, 255, 0);
853
854 /* Green box if hardware never idles (as far as we can tell)
855 */
856 if (!(dev_priv->sarea_priv->perf_boxes & I830_BOX_RING_EMPTY))
857 i830_fill_box(dev, 64, 4, 8, 8, 0, 255, 0);
858
859 /* Draw bars indicating number of buffers allocated
860 * (not a great measure, easily confused)
861 */
862 if (dev_priv->dma_used) {
863 int bar = dev_priv->dma_used / 10240;
864 if (bar > 100)
865 bar = 100;
866 if (bar < 1)
867 bar = 1;
868 i830_fill_box(dev, 4, 16, bar, 4, 196, 128, 128);
869 dev_priv->dma_used = 0;
870 }
871
872 dev_priv->sarea_priv->perf_boxes = 0;
873 }
874
875 static void i830_dma_dispatch_clear(struct drm_device * dev, int flags,
876 unsigned int clear_color,
877 unsigned int clear_zval,
878 unsigned int clear_depthmask)
879 {
880 drm_i830_private_t *dev_priv = dev->dev_private;
881 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
882 int nbox = sarea_priv->nbox;
883 struct drm_clip_rect *pbox = sarea_priv->boxes;
884 int pitch = dev_priv->pitch;
885 int cpp = dev_priv->cpp;
886 int i;
887 unsigned int BR13, CMD, D_CMD;
888 RING_LOCALS;
889
890 if (dev_priv->current_page == 1) {
891 unsigned int tmp = flags;
892
893 flags &= ~(I830_FRONT | I830_BACK);
894 if (tmp & I830_FRONT)
895 flags |= I830_BACK;
896 if (tmp & I830_BACK)
897 flags |= I830_FRONT;
898 }
899
900 i830_kernel_lost_context(dev);
901
902 switch (cpp) {
903 case 2:
904 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24);
905 D_CMD = CMD = XY_COLOR_BLT_CMD;
906 break;
907 case 4:
908 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24) | (1 << 25);
909 CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
910 XY_COLOR_BLT_WRITE_RGB);
911 D_CMD = XY_COLOR_BLT_CMD;
912 if (clear_depthmask & 0x00ffffff)
913 D_CMD |= XY_COLOR_BLT_WRITE_RGB;
914 if (clear_depthmask & 0xff000000)
915 D_CMD |= XY_COLOR_BLT_WRITE_ALPHA;
916 break;
917 default:
918 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24);
919 D_CMD = CMD = XY_COLOR_BLT_CMD;
920 break;
921 }
922
923 if (nbox > I830_NR_SAREA_CLIPRECTS)
924 nbox = I830_NR_SAREA_CLIPRECTS;
925
926 for (i = 0; i < nbox; i++, pbox++) {
927 if (pbox->x1 > pbox->x2 ||
928 pbox->y1 > pbox->y2 ||
929 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
930 continue;
931
932 if (flags & I830_FRONT) {
933 DRM_DEBUG("clear front\n");
934 BEGIN_LP_RING(6);
935 OUT_RING(CMD);
936 OUT_RING(BR13);
937 OUT_RING((pbox->y1 << 16) | pbox->x1);
938 OUT_RING((pbox->y2 << 16) | pbox->x2);
939 OUT_RING(dev_priv->front_offset);
940 OUT_RING(clear_color);
941 ADVANCE_LP_RING();
942 }
943
944 if (flags & I830_BACK) {
945 DRM_DEBUG("clear back\n");
946 BEGIN_LP_RING(6);
947 OUT_RING(CMD);
948 OUT_RING(BR13);
949 OUT_RING((pbox->y1 << 16) | pbox->x1);
950 OUT_RING((pbox->y2 << 16) | pbox->x2);
951 OUT_RING(dev_priv->back_offset);
952 OUT_RING(clear_color);
953 ADVANCE_LP_RING();
954 }
955
956 if (flags & I830_DEPTH) {
957 DRM_DEBUG("clear depth\n");
958 BEGIN_LP_RING(6);
959 OUT_RING(D_CMD);
960 OUT_RING(BR13);
961 OUT_RING((pbox->y1 << 16) | pbox->x1);
962 OUT_RING((pbox->y2 << 16) | pbox->x2);
963 OUT_RING(dev_priv->depth_offset);
964 OUT_RING(clear_zval);
965 ADVANCE_LP_RING();
966 }
967 }
968 }
969
970 static void i830_dma_dispatch_swap(struct drm_device * dev)
971 {
972 drm_i830_private_t *dev_priv = dev->dev_private;
973 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
974 int nbox = sarea_priv->nbox;
975 struct drm_clip_rect *pbox = sarea_priv->boxes;
976 int pitch = dev_priv->pitch;
977 int cpp = dev_priv->cpp;
978 int i;
979 unsigned int CMD, BR13;
980 RING_LOCALS;
981
982 DRM_DEBUG("swapbuffers\n");
983
984 i830_kernel_lost_context(dev);
985
986 if (dev_priv->do_boxes)
987 i830_cp_performance_boxes(dev);
988
989 switch (cpp) {
990 case 2:
991 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
992 CMD = XY_SRC_COPY_BLT_CMD;
993 break;
994 case 4:
995 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25);
996 CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
997 XY_SRC_COPY_BLT_WRITE_RGB);
998 break;
999 default:
1000 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
1001 CMD = XY_SRC_COPY_BLT_CMD;
1002 break;
1003 }
1004
1005 if (nbox > I830_NR_SAREA_CLIPRECTS)
1006 nbox = I830_NR_SAREA_CLIPRECTS;
1007
1008 for (i = 0; i < nbox; i++, pbox++) {
1009 if (pbox->x1 > pbox->x2 ||
1010 pbox->y1 > pbox->y2 ||
1011 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
1012 continue;
1013
1014 DRM_DEBUG("dispatch swap %d,%d-%d,%d!\n",
1015 pbox->x1, pbox->y1, pbox->x2, pbox->y2);
1016
1017 BEGIN_LP_RING(8);
1018 OUT_RING(CMD);
1019 OUT_RING(BR13);
1020 OUT_RING((pbox->y1 << 16) | pbox->x1);
1021 OUT_RING((pbox->y2 << 16) | pbox->x2);
1022
1023 if (dev_priv->current_page == 0)
1024 OUT_RING(dev_priv->front_offset);
1025 else
1026 OUT_RING(dev_priv->back_offset);
1027
1028 OUT_RING((pbox->y1 << 16) | pbox->x1);
1029 OUT_RING(BR13 & 0xffff);
1030
1031 if (dev_priv->current_page == 0)
1032 OUT_RING(dev_priv->back_offset);
1033 else
1034 OUT_RING(dev_priv->front_offset);
1035
1036 ADVANCE_LP_RING();
1037 }
1038 }
1039
1040 static void i830_dma_dispatch_flip(struct drm_device * dev)
1041 {
1042 drm_i830_private_t *dev_priv = dev->dev_private;
1043 RING_LOCALS;
1044
1045 DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
1046 __func__,
1047 dev_priv->current_page,
1048 dev_priv->sarea_priv->pf_current_page);
1049
1050 i830_kernel_lost_context(dev);
1051
1052 if (dev_priv->do_boxes) {
1053 dev_priv->sarea_priv->perf_boxes |= I830_BOX_FLIP;
1054 i830_cp_performance_boxes(dev);
1055 }
1056
1057 BEGIN_LP_RING(2);
1058 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
1059 OUT_RING(0);
1060 ADVANCE_LP_RING();
1061
1062 BEGIN_LP_RING(6);
1063 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
1064 OUT_RING(0);
1065 if (dev_priv->current_page == 0) {
1066 OUT_RING(dev_priv->back_offset);
1067 dev_priv->current_page = 1;
1068 } else {
1069 OUT_RING(dev_priv->front_offset);
1070 dev_priv->current_page = 0;
1071 }
1072 OUT_RING(0);
1073 ADVANCE_LP_RING();
1074
1075 BEGIN_LP_RING(2);
1076 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
1077 OUT_RING(0);
1078 ADVANCE_LP_RING();
1079
1080 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1081 }
1082
1083 static void i830_dma_dispatch_vertex(struct drm_device * dev,
1084 struct drm_buf * buf, int discard, int used)
1085 {
1086 drm_i830_private_t *dev_priv = dev->dev_private;
1087 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1088 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
1089 struct drm_clip_rect *box = sarea_priv->boxes;
1090 int nbox = sarea_priv->nbox;
1091 unsigned long address = (unsigned long)buf->bus_address;
1092 unsigned long start = address - dev->agp->base;
1093 int i = 0, u;
1094 RING_LOCALS;
1095
1096 i830_kernel_lost_context(dev);
1097
1098 if (nbox > I830_NR_SAREA_CLIPRECTS)
1099 nbox = I830_NR_SAREA_CLIPRECTS;
1100
1101 if (discard) {
1102 u = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1103 I830_BUF_HARDWARE);
1104 if (u != I830_BUF_CLIENT) {
1105 DRM_DEBUG("xxxx 2\n");
1106 }
1107 }
1108
1109 if (used > 4 * 1023)
1110 used = 0;
1111
1112 if (sarea_priv->dirty)
1113 i830EmitState(dev);
1114
1115 DRM_DEBUG("dispatch vertex addr 0x%lx, used 0x%x nbox %d\n",
1116 address, used, nbox);
1117
1118 dev_priv->counter++;
1119 DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1120 DRM_DEBUG("i830_dma_dispatch\n");
1121 DRM_DEBUG("start : %lx\n", start);
1122 DRM_DEBUG("used : %d\n", used);
1123 DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1124
1125 if (buf_priv->currently_mapped == I830_BUF_MAPPED) {
1126 u32 *vp = buf_priv->kernel_virtual;
1127
1128 vp[0] = (GFX_OP_PRIMITIVE |
1129 sarea_priv->vertex_prim | ((used / 4) - 2));
1130
1131 if (dev_priv->use_mi_batchbuffer_start) {
1132 vp[used / 4] = MI_BATCH_BUFFER_END;
1133 used += 4;
1134 }
1135
1136 if (used & 4) {
1137 vp[used / 4] = 0;
1138 used += 4;
1139 }
1140
1141 i830_unmap_buffer(buf);
1142 }
1143
1144 if (used) {
1145 do {
1146 if (i < nbox) {
1147 BEGIN_LP_RING(6);
1148 OUT_RING(GFX_OP_DRAWRECT_INFO);
1149 OUT_RING(sarea_priv->
1150 BufferState[I830_DESTREG_DR1]);
1151 OUT_RING(box[i].x1 | (box[i].y1 << 16));
1152 OUT_RING(box[i].x2 | (box[i].y2 << 16));
1153 OUT_RING(sarea_priv->
1154 BufferState[I830_DESTREG_DR4]);
1155 OUT_RING(0);
1156 ADVANCE_LP_RING();
1157 }
1158
1159 if (dev_priv->use_mi_batchbuffer_start) {
1160 BEGIN_LP_RING(2);
1161 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
1162 OUT_RING(start | MI_BATCH_NON_SECURE);
1163 ADVANCE_LP_RING();
1164 } else {
1165 BEGIN_LP_RING(4);
1166 OUT_RING(MI_BATCH_BUFFER);
1167 OUT_RING(start | MI_BATCH_NON_SECURE);
1168 OUT_RING(start + used - 4);
1169 OUT_RING(0);
1170 ADVANCE_LP_RING();
1171 }
1172
1173 } while (++i < nbox);
1174 }
1175
1176 if (discard) {
1177 dev_priv->counter++;
1178
1179 (void)cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1180 I830_BUF_HARDWARE);
1181
1182 BEGIN_LP_RING(8);
1183 OUT_RING(CMD_STORE_DWORD_IDX);
1184 OUT_RING(20);
1185 OUT_RING(dev_priv->counter);
1186 OUT_RING(CMD_STORE_DWORD_IDX);
1187 OUT_RING(buf_priv->my_use_idx);
1188 OUT_RING(I830_BUF_FREE);
1189 OUT_RING(CMD_REPORT_HEAD);
1190 OUT_RING(0);
1191 ADVANCE_LP_RING();
1192 }
1193 }
1194
1195 static void i830_dma_quiescent(struct drm_device * dev)
1196 {
1197 drm_i830_private_t *dev_priv = dev->dev_private;
1198 RING_LOCALS;
1199
1200 i830_kernel_lost_context(dev);
1201
1202 BEGIN_LP_RING(4);
1203 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
1204 OUT_RING(CMD_REPORT_HEAD);
1205 OUT_RING(0);
1206 OUT_RING(0);
1207 ADVANCE_LP_RING();
1208
1209 i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
1210 }
1211
1212 static int i830_flush_queue(struct drm_device * dev)
1213 {
1214 drm_i830_private_t *dev_priv = dev->dev_private;
1215 struct drm_device_dma *dma = dev->dma;
1216 int i, ret = 0;
1217 RING_LOCALS;
1218
1219 i830_kernel_lost_context(dev);
1220
1221 BEGIN_LP_RING(2);
1222 OUT_RING(CMD_REPORT_HEAD);
1223 OUT_RING(0);
1224 ADVANCE_LP_RING();
1225
1226 i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
1227
1228 for (i = 0; i < dma->buf_count; i++) {
1229 struct drm_buf *buf = dma->buflist[i];
1230 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1231
1232 int used = cmpxchg(buf_priv->in_use, I830_BUF_HARDWARE,
1233 I830_BUF_FREE);
1234
1235 if (used == I830_BUF_HARDWARE)
1236 DRM_DEBUG("reclaimed from HARDWARE\n");
1237 if (used == I830_BUF_CLIENT)
1238 DRM_DEBUG("still on client\n");
1239 }
1240
1241 return ret;
1242 }
1243
1244 /* Must be called with the lock held */
1245 static void i830_reclaim_buffers(struct drm_device * dev, struct drm_file *file_priv)
1246 {
1247 struct drm_device_dma *dma = dev->dma;
1248 int i;
1249
1250 if (!dma)
1251 return;
1252 if (!dev->dev_private)
1253 return;
1254 if (!dma->buflist)
1255 return;
1256
1257 i830_flush_queue(dev);
1258
1259 for (i = 0; i < dma->buf_count; i++) {
1260 struct drm_buf *buf = dma->buflist[i];
1261 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1262
1263 if (buf->file_priv == file_priv && buf_priv) {
1264 int used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1265 I830_BUF_FREE);
1266
1267 if (used == I830_BUF_CLIENT)
1268 DRM_DEBUG("reclaimed from client\n");
1269 if (buf_priv->currently_mapped == I830_BUF_MAPPED)
1270 buf_priv->currently_mapped = I830_BUF_UNMAPPED;
1271 }
1272 }
1273 }
1274
1275 static int i830_flush_ioctl(struct drm_device *dev, void *data,
1276 struct drm_file *file_priv)
1277 {
1278 LOCK_TEST_WITH_RETURN(dev, file_priv);
1279
1280 i830_flush_queue(dev);
1281 return 0;
1282 }
1283
1284 static int i830_dma_vertex(struct drm_device *dev, void *data,
1285 struct drm_file *file_priv)
1286 {
1287 struct drm_device_dma *dma = dev->dma;
1288 drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1289 u32 *hw_status = dev_priv->hw_status_page;
1290 drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1291 dev_priv->sarea_priv;
1292 drm_i830_vertex_t *vertex = data;
1293
1294 LOCK_TEST_WITH_RETURN(dev, file_priv);
1295
1296 DRM_DEBUG("i830 dma vertex, idx %d used %d discard %d\n",
1297 vertex->idx, vertex->used, vertex->discard);
1298
1299 if (vertex->idx < 0 || vertex->idx > dma->buf_count)
1300 return -EINVAL;
1301
1302 i830_dma_dispatch_vertex(dev,
1303 dma->buflist[vertex->idx],
1304 vertex->discard, vertex->used);
1305
1306 sarea_priv->last_enqueue = dev_priv->counter - 1;
1307 sarea_priv->last_dispatch = (int)hw_status[5];
1308
1309 return 0;
1310 }
1311
1312 static int i830_clear_bufs(struct drm_device *dev, void *data,
1313 struct drm_file *file_priv)
1314 {
1315 drm_i830_clear_t *clear = data;
1316
1317 LOCK_TEST_WITH_RETURN(dev, file_priv);
1318
1319 /* GH: Someone's doing nasty things... */
1320 if (!dev->dev_private) {
1321 return -EINVAL;
1322 }
1323
1324 i830_dma_dispatch_clear(dev, clear->flags,
1325 clear->clear_color,
1326 clear->clear_depth, clear->clear_depthmask);
1327 return 0;
1328 }
1329
1330 static int i830_swap_bufs(struct drm_device *dev, void *data,
1331 struct drm_file *file_priv)
1332 {
1333 DRM_DEBUG("i830_swap_bufs\n");
1334
1335 LOCK_TEST_WITH_RETURN(dev, file_priv);
1336
1337 i830_dma_dispatch_swap(dev);
1338 return 0;
1339 }
1340
1341 /* Not sure why this isn't set all the time:
1342 */
1343 static void i830_do_init_pageflip(struct drm_device * dev)
1344 {
1345 drm_i830_private_t *dev_priv = dev->dev_private;
1346
1347 DRM_DEBUG("%s\n", __func__);
1348 dev_priv->page_flipping = 1;
1349 dev_priv->current_page = 0;
1350 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1351 }
1352
1353 static int i830_do_cleanup_pageflip(struct drm_device * dev)
1354 {
1355 drm_i830_private_t *dev_priv = dev->dev_private;
1356
1357 DRM_DEBUG("%s\n", __func__);
1358 if (dev_priv->current_page != 0)
1359 i830_dma_dispatch_flip(dev);
1360
1361 dev_priv->page_flipping = 0;
1362 return 0;
1363 }
1364
1365 static int i830_flip_bufs(struct drm_device *dev, void *data,
1366 struct drm_file *file_priv)
1367 {
1368 drm_i830_private_t *dev_priv = dev->dev_private;
1369
1370 DRM_DEBUG("%s\n", __func__);
1371
1372 LOCK_TEST_WITH_RETURN(dev, file_priv);
1373
1374 if (!dev_priv->page_flipping)
1375 i830_do_init_pageflip(dev);
1376
1377 i830_dma_dispatch_flip(dev);
1378 return 0;
1379 }
1380
1381 static int i830_getage(struct drm_device *dev, void *data,
1382 struct drm_file *file_priv)
1383 {
1384 drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1385 u32 *hw_status = dev_priv->hw_status_page;
1386 drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1387 dev_priv->sarea_priv;
1388
1389 sarea_priv->last_dispatch = (int)hw_status[5];
1390 return 0;
1391 }
1392
1393 static int i830_getbuf(struct drm_device *dev, void *data,
1394 struct drm_file *file_priv)
1395 {
1396 int retcode = 0;
1397 drm_i830_dma_t *d = data;
1398 drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1399 u32 *hw_status = dev_priv->hw_status_page;
1400 drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1401 dev_priv->sarea_priv;
1402
1403 DRM_DEBUG("getbuf\n");
1404
1405 LOCK_TEST_WITH_RETURN(dev, file_priv);
1406
1407 d->granted = 0;
1408
1409 retcode = i830_dma_get_buffer(dev, d, file_priv);
1410
1411 DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n",
1412 task_pid_nr(current), retcode, d->granted);
1413
1414 sarea_priv->last_dispatch = (int)hw_status[5];
1415
1416 return retcode;
1417 }
1418
1419 static int i830_copybuf(struct drm_device *dev, void *data,
1420 struct drm_file *file_priv)
1421 {
1422 /* Never copy - 2.4.x doesn't need it */
1423 return 0;
1424 }
1425
1426 static int i830_docopy(struct drm_device *dev, void *data,
1427 struct drm_file *file_priv)
1428 {
1429 return 0;
1430 }
1431
1432 static int i830_getparam(struct drm_device *dev, void *data,
1433 struct drm_file *file_priv)
1434 {
1435 drm_i830_private_t *dev_priv = dev->dev_private;
1436 drm_i830_getparam_t *param = data;
1437 int value;
1438
1439 if (!dev_priv) {
1440 DRM_ERROR("%s called with no initialization\n", __func__);
1441 return -EINVAL;
1442 }
1443
1444 switch (param->param) {
1445 case I830_PARAM_IRQ_ACTIVE:
1446 value = dev->irq_enabled;
1447 break;
1448 default:
1449 return -EINVAL;
1450 }
1451
1452 if (copy_to_user(param->value, &value, sizeof(int))) {
1453 DRM_ERROR("copy_to_user\n");
1454 return -EFAULT;
1455 }
1456
1457 return 0;
1458 }
1459
1460 static int i830_setparam(struct drm_device *dev, void *data,
1461 struct drm_file *file_priv)
1462 {
1463 drm_i830_private_t *dev_priv = dev->dev_private;
1464 drm_i830_setparam_t *param = data;
1465
1466 if (!dev_priv) {
1467 DRM_ERROR("%s called with no initialization\n", __func__);
1468 return -EINVAL;
1469 }
1470
1471 switch (param->param) {
1472 case I830_SETPARAM_USE_MI_BATCHBUFFER_START:
1473 dev_priv->use_mi_batchbuffer_start = param->value;
1474 break;
1475 default:
1476 return -EINVAL;
1477 }
1478
1479 return 0;
1480 }
1481
1482 int i830_driver_load(struct drm_device *dev, unsigned long flags)
1483 {
1484 /* i830 has 4 more counters */
1485 dev->counters += 4;
1486 dev->types[6] = _DRM_STAT_IRQ;
1487 dev->types[7] = _DRM_STAT_PRIMARY;
1488 dev->types[8] = _DRM_STAT_SECONDARY;
1489 dev->types[9] = _DRM_STAT_DMA;
1490
1491 return 0;
1492 }
1493
1494 void i830_driver_lastclose(struct drm_device * dev)
1495 {
1496 i830_dma_cleanup(dev);
1497 }
1498
1499 void i830_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1500 {
1501 if (dev->dev_private) {
1502 drm_i830_private_t *dev_priv = dev->dev_private;
1503 if (dev_priv->page_flipping) {
1504 i830_do_cleanup_pageflip(dev);
1505 }
1506 }
1507 }
1508
1509 void i830_driver_reclaim_buffers_locked(struct drm_device * dev, struct drm_file *file_priv)
1510 {
1511 i830_reclaim_buffers(dev, file_priv);
1512 }
1513
1514 int i830_driver_dma_quiescent(struct drm_device * dev)
1515 {
1516 i830_dma_quiescent(dev);
1517 return 0;
1518 }
1519
1520 struct drm_ioctl_desc i830_ioctls[] = {
1521 DRM_IOCTL_DEF(DRM_I830_INIT, i830_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1522 DRM_IOCTL_DEF(DRM_I830_VERTEX, i830_dma_vertex, DRM_AUTH),
1523 DRM_IOCTL_DEF(DRM_I830_CLEAR, i830_clear_bufs, DRM_AUTH),
1524 DRM_IOCTL_DEF(DRM_I830_FLUSH, i830_flush_ioctl, DRM_AUTH),
1525 DRM_IOCTL_DEF(DRM_I830_GETAGE, i830_getage, DRM_AUTH),
1526 DRM_IOCTL_DEF(DRM_I830_GETBUF, i830_getbuf, DRM_AUTH),
1527 DRM_IOCTL_DEF(DRM_I830_SWAP, i830_swap_bufs, DRM_AUTH),
1528 DRM_IOCTL_DEF(DRM_I830_COPY, i830_copybuf, DRM_AUTH),
1529 DRM_IOCTL_DEF(DRM_I830_DOCOPY, i830_docopy, DRM_AUTH),
1530 DRM_IOCTL_DEF(DRM_I830_FLIP, i830_flip_bufs, DRM_AUTH),
1531 DRM_IOCTL_DEF(DRM_I830_IRQ_EMIT, i830_irq_emit, DRM_AUTH),
1532 DRM_IOCTL_DEF(DRM_I830_IRQ_WAIT, i830_irq_wait, DRM_AUTH),
1533 DRM_IOCTL_DEF(DRM_I830_GETPARAM, i830_getparam, DRM_AUTH),
1534 DRM_IOCTL_DEF(DRM_I830_SETPARAM, i830_setparam, DRM_AUTH)
1535 };
1536
1537 int i830_max_ioctl = DRM_ARRAY_SIZE(i830_ioctls);
1538
1539 /**
1540 * Determine if the device really is AGP or not.
1541 *
1542 * All Intel graphics chipsets are treated as AGP, even if they are really
1543 * PCI-e.
1544 *
1545 * \param dev The device to be tested.
1546 *
1547 * \returns
1548 * A value of 1 is always retured to indictate every i8xx is AGP.
1549 */
1550 int i830_driver_device_is_agp(struct drm_device * dev)
1551 {
1552 return 1;
1553 }
linux kernel for loongson