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Merge branch 'mini2440-dev-unlikely' into mini2440-dev
[linux-2.6/mini2440.git] / drivers / gpu / drm / i830 / i830_dma.c
blob877bf6cb14a4351d4a054b736b104d14afb0fe72
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 kfree(dev->dev_private);
236 dev->dev_private = NULL;
237
238 for (i = 0; i < dma->buf_count; i++) {
239 struct drm_buf *buf = dma->buflist[i];
240 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
241 if (buf_priv->kernel_virtual && buf->total)
242 drm_core_ioremapfree(&buf_priv->map, dev);
243 }
244 }
245 return 0;
246 }
247
248 int i830_wait_ring(struct drm_device * dev, int n, const char *caller)
249 {
250 drm_i830_private_t *dev_priv = dev->dev_private;
251 drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
252 int iters = 0;
253 unsigned long end;
254 unsigned int last_head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
255
256 end = jiffies + (HZ * 3);
257 while (ring->space < n) {
258 ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
259 ring->space = ring->head - (ring->tail + 8);
260 if (ring->space < 0)
261 ring->space += ring->Size;
262
263 if (ring->head != last_head) {
264 end = jiffies + (HZ * 3);
265 last_head = ring->head;
266 }
267
268 iters++;
269 if (time_before(end, jiffies)) {
270 DRM_ERROR("space: %d wanted %d\n", ring->space, n);
271 DRM_ERROR("lockup\n");
272 goto out_wait_ring;
273 }
274 udelay(1);
275 dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT;
276 }
277
278 out_wait_ring:
279 return iters;
280 }
281
282 static void i830_kernel_lost_context(struct drm_device * dev)
283 {
284 drm_i830_private_t *dev_priv = dev->dev_private;
285 drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
286
287 ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
288 ring->tail = I830_READ(LP_RING + RING_TAIL) & TAIL_ADDR;
289 ring->space = ring->head - (ring->tail + 8);
290 if (ring->space < 0)
291 ring->space += ring->Size;
292
293 if (ring->head == ring->tail)
294 dev_priv->sarea_priv->perf_boxes |= I830_BOX_RING_EMPTY;
295 }
296
297 static int i830_freelist_init(struct drm_device * dev, drm_i830_private_t * dev_priv)
298 {
299 struct drm_device_dma *dma = dev->dma;
300 int my_idx = 36;
301 u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
302 int i;
303
304 if (dma->buf_count > 1019) {
305 /* Not enough space in the status page for the freelist */
306 return -EINVAL;
307 }
308
309 for (i = 0; i < dma->buf_count; i++) {
310 struct drm_buf *buf = dma->buflist[i];
311 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
312
313 buf_priv->in_use = hw_status++;
314 buf_priv->my_use_idx = my_idx;
315 my_idx += 4;
316
317 *buf_priv->in_use = I830_BUF_FREE;
318
319 buf_priv->map.offset = buf->bus_address;
320 buf_priv->map.size = buf->total;
321 buf_priv->map.type = _DRM_AGP;
322 buf_priv->map.flags = 0;
323 buf_priv->map.mtrr = 0;
324
325 drm_core_ioremap(&buf_priv->map, dev);
326 buf_priv->kernel_virtual = buf_priv->map.handle;
327 }
328 return 0;
329 }
330
331 static int i830_dma_initialize(struct drm_device * dev,
332 drm_i830_private_t * dev_priv,
333 drm_i830_init_t * init)
334 {
335 struct drm_map_list *r_list;
336
337 memset(dev_priv, 0, sizeof(drm_i830_private_t));
338
339 list_for_each_entry(r_list, &dev->maplist, head) {
340 if (r_list->map &&
341 r_list->map->type == _DRM_SHM &&
342 r_list->map->flags & _DRM_CONTAINS_LOCK) {
343 dev_priv->sarea_map = r_list->map;
344 break;
345 }
346 }
347
348 if (!dev_priv->sarea_map) {
349 dev->dev_private = (void *)dev_priv;
350 i830_dma_cleanup(dev);
351 DRM_ERROR("can not find sarea!\n");
352 return -EINVAL;
353 }
354 dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
355 if (!dev_priv->mmio_map) {
356 dev->dev_private = (void *)dev_priv;
357 i830_dma_cleanup(dev);
358 DRM_ERROR("can not find mmio map!\n");
359 return -EINVAL;
360 }
361 dev->agp_buffer_token = init->buffers_offset;
362 dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
363 if (!dev->agp_buffer_map) {
364 dev->dev_private = (void *)dev_priv;
365 i830_dma_cleanup(dev);
366 DRM_ERROR("can not find dma buffer map!\n");
367 return -EINVAL;
368 }
369
370 dev_priv->sarea_priv = (drm_i830_sarea_t *)
371 ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
372
373 dev_priv->ring.Start = init->ring_start;
374 dev_priv->ring.End = init->ring_end;
375 dev_priv->ring.Size = init->ring_size;
376
377 dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
378 dev_priv->ring.map.size = init->ring_size;
379 dev_priv->ring.map.type = _DRM_AGP;
380 dev_priv->ring.map.flags = 0;
381 dev_priv->ring.map.mtrr = 0;
382
383 drm_core_ioremap(&dev_priv->ring.map, dev);
384
385 if (dev_priv->ring.map.handle == NULL) {
386 dev->dev_private = (void *)dev_priv;
387 i830_dma_cleanup(dev);
388 DRM_ERROR("can not ioremap virtual address for"
389 " ring buffer\n");
390 return -ENOMEM;
391 }
392
393 dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
394
395 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
396
397 dev_priv->w = init->w;
398 dev_priv->h = init->h;
399 dev_priv->pitch = init->pitch;
400 dev_priv->back_offset = init->back_offset;
401 dev_priv->depth_offset = init->depth_offset;
402 dev_priv->front_offset = init->front_offset;
403
404 dev_priv->front_di1 = init->front_offset | init->pitch_bits;
405 dev_priv->back_di1 = init->back_offset | init->pitch_bits;
406 dev_priv->zi1 = init->depth_offset | init->pitch_bits;
407
408 DRM_DEBUG("front_di1 %x\n", dev_priv->front_di1);
409 DRM_DEBUG("back_offset %x\n", dev_priv->back_offset);
410 DRM_DEBUG("back_di1 %x\n", dev_priv->back_di1);
411 DRM_DEBUG("pitch_bits %x\n", init->pitch_bits);
412
413 dev_priv->cpp = init->cpp;
414 /* We are using separate values as placeholders for mechanisms for
415 * private backbuffer/depthbuffer usage.
416 */
417
418 dev_priv->back_pitch = init->back_pitch;
419 dev_priv->depth_pitch = init->depth_pitch;
420 dev_priv->do_boxes = 0;
421 dev_priv->use_mi_batchbuffer_start = 0;
422
423 /* Program Hardware Status Page */
424 dev_priv->hw_status_page =
425 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
426 &dev_priv->dma_status_page);
427 if (!dev_priv->hw_status_page) {
428 dev->dev_private = (void *)dev_priv;
429 i830_dma_cleanup(dev);
430 DRM_ERROR("Can not allocate hardware status page\n");
431 return -ENOMEM;
432 }
433 memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
434 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
435
436 I830_WRITE(0x02080, dev_priv->dma_status_page);
437 DRM_DEBUG("Enabled hardware status page\n");
438
439 /* Now we need to init our freelist */
440 if (i830_freelist_init(dev, dev_priv) != 0) {
441 dev->dev_private = (void *)dev_priv;
442 i830_dma_cleanup(dev);
443 DRM_ERROR("Not enough space in the status page for"
444 " the freelist\n");
445 return -ENOMEM;
446 }
447 dev->dev_private = (void *)dev_priv;
448
449 return 0;
450 }
451
452 static int i830_dma_init(struct drm_device *dev, void *data,
453 struct drm_file *file_priv)
454 {
455 drm_i830_private_t *dev_priv;
456 drm_i830_init_t *init = data;
457 int retcode = 0;
458
459 switch (init->func) {
460 case I830_INIT_DMA:
461 dev_priv = kmalloc(sizeof(drm_i830_private_t), GFP_KERNEL);
462 if (dev_priv == NULL)
463 return -ENOMEM;
464 retcode = i830_dma_initialize(dev, dev_priv, init);
465 break;
466 case I830_CLEANUP_DMA:
467 retcode = i830_dma_cleanup(dev);
468 break;
469 default:
470 retcode = -EINVAL;
471 break;
472 }
473
474 return retcode;
475 }
476
477 #define GFX_OP_STIPPLE ((0x3<<29)|(0x1d<<24)|(0x83<<16))
478 #define ST1_ENABLE (1<<16)
479 #define ST1_MASK (0xffff)
480
481 /* Most efficient way to verify state for the i830 is as it is
482 * emitted. Non-conformant state is silently dropped.
483 */
484 static void i830EmitContextVerified(struct drm_device * dev, unsigned int *code)
485 {
486 drm_i830_private_t *dev_priv = dev->dev_private;
487 int i, j = 0;
488 unsigned int tmp;
489 RING_LOCALS;
490
491 BEGIN_LP_RING(I830_CTX_SETUP_SIZE + 4);
492
493 for (i = 0; i < I830_CTXREG_BLENDCOLR0; i++) {
494 tmp = code[i];
495 if ((tmp & (7 << 29)) == CMD_3D &&
496 (tmp & (0x1f << 24)) < (0x1d << 24)) {
497 OUT_RING(tmp);
498 j++;
499 } else {
500 DRM_ERROR("Skipping %d\n", i);
501 }
502 }
503
504 OUT_RING(STATE3D_CONST_BLEND_COLOR_CMD);
505 OUT_RING(code[I830_CTXREG_BLENDCOLR]);
506 j += 2;
507
508 for (i = I830_CTXREG_VF; i < I830_CTXREG_MCSB0; i++) {
509 tmp = code[i];
510 if ((tmp & (7 << 29)) == CMD_3D &&
511 (tmp & (0x1f << 24)) < (0x1d << 24)) {
512 OUT_RING(tmp);
513 j++;
514 } else {
515 DRM_ERROR("Skipping %d\n", i);
516 }
517 }
518
519 OUT_RING(STATE3D_MAP_COORD_SETBIND_CMD);
520 OUT_RING(code[I830_CTXREG_MCSB1]);
521 j += 2;
522
523 if (j & 1)
524 OUT_RING(0);
525
526 ADVANCE_LP_RING();
527 }
528
529 static void i830EmitTexVerified(struct drm_device * dev, unsigned int *code)
530 {
531 drm_i830_private_t *dev_priv = dev->dev_private;
532 int i, j = 0;
533 unsigned int tmp;
534 RING_LOCALS;
535
536 if (code[I830_TEXREG_MI0] == GFX_OP_MAP_INFO ||
537 (code[I830_TEXREG_MI0] & ~(0xf * LOAD_TEXTURE_MAP0)) ==
538 (STATE3D_LOAD_STATE_IMMEDIATE_2 | 4)) {
539
540 BEGIN_LP_RING(I830_TEX_SETUP_SIZE);
541
542 OUT_RING(code[I830_TEXREG_MI0]); /* TM0LI */
543 OUT_RING(code[I830_TEXREG_MI1]); /* TM0S0 */
544 OUT_RING(code[I830_TEXREG_MI2]); /* TM0S1 */
545 OUT_RING(code[I830_TEXREG_MI3]); /* TM0S2 */
546 OUT_RING(code[I830_TEXREG_MI4]); /* TM0S3 */
547 OUT_RING(code[I830_TEXREG_MI5]); /* TM0S4 */
548
549 for (i = 6; i < I830_TEX_SETUP_SIZE; i++) {
550 tmp = code[i];
551 OUT_RING(tmp);
552 j++;
553 }
554
555 if (j & 1)
556 OUT_RING(0);
557
558 ADVANCE_LP_RING();
559 } else
560 printk("rejected packet %x\n", code[0]);
561 }
562
563 static void i830EmitTexBlendVerified(struct drm_device * dev,
564 unsigned int *code, unsigned int num)
565 {
566 drm_i830_private_t *dev_priv = dev->dev_private;
567 int i, j = 0;
568 unsigned int tmp;
569 RING_LOCALS;
570
571 if (!num)
572 return;
573
574 BEGIN_LP_RING(num + 1);
575
576 for (i = 0; i < num; i++) {
577 tmp = code[i];
578 OUT_RING(tmp);
579 j++;
580 }
581
582 if (j & 1)
583 OUT_RING(0);
584
585 ADVANCE_LP_RING();
586 }
587
588 static void i830EmitTexPalette(struct drm_device * dev,
589 unsigned int *palette, int number, int is_shared)
590 {
591 drm_i830_private_t *dev_priv = dev->dev_private;
592 int i;
593 RING_LOCALS;
594
595 return;
596
597 BEGIN_LP_RING(258);
598
599 if (is_shared == 1) {
600 OUT_RING(CMD_OP_MAP_PALETTE_LOAD |
601 MAP_PALETTE_NUM(0) | MAP_PALETTE_BOTH);
602 } else {
603 OUT_RING(CMD_OP_MAP_PALETTE_LOAD | MAP_PALETTE_NUM(number));
604 }
605 for (i = 0; i < 256; i++) {
606 OUT_RING(palette[i]);
607 }
608 OUT_RING(0);
609 /* KW: WHERE IS THE ADVANCE_LP_RING? This is effectively a noop!
610 */
611 }
612
613 /* Need to do some additional checking when setting the dest buffer.
614 */
615 static void i830EmitDestVerified(struct drm_device * dev, unsigned int *code)
616 {
617 drm_i830_private_t *dev_priv = dev->dev_private;
618 unsigned int tmp;
619 RING_LOCALS;
620
621 BEGIN_LP_RING(I830_DEST_SETUP_SIZE + 10);
622
623 tmp = code[I830_DESTREG_CBUFADDR];
624 if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
625 if (((int)outring) & 8) {
626 OUT_RING(0);
627 OUT_RING(0);
628 }
629
630 OUT_RING(CMD_OP_DESTBUFFER_INFO);
631 OUT_RING(BUF_3D_ID_COLOR_BACK |
632 BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) |
633 BUF_3D_USE_FENCE);
634 OUT_RING(tmp);
635 OUT_RING(0);
636
637 OUT_RING(CMD_OP_DESTBUFFER_INFO);
638 OUT_RING(BUF_3D_ID_DEPTH | BUF_3D_USE_FENCE |
639 BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp));
640 OUT_RING(dev_priv->zi1);
641 OUT_RING(0);
642 } else {
643 DRM_ERROR("bad di1 %x (allow %x or %x)\n",
644 tmp, dev_priv->front_di1, dev_priv->back_di1);
645 }
646
647 /* invarient:
648 */
649
650 OUT_RING(GFX_OP_DESTBUFFER_VARS);
651 OUT_RING(code[I830_DESTREG_DV1]);
652
653 OUT_RING(GFX_OP_DRAWRECT_INFO);
654 OUT_RING(code[I830_DESTREG_DR1]);
655 OUT_RING(code[I830_DESTREG_DR2]);
656 OUT_RING(code[I830_DESTREG_DR3]);
657 OUT_RING(code[I830_DESTREG_DR4]);
658
659 /* Need to verify this */
660 tmp = code[I830_DESTREG_SENABLE];
661 if ((tmp & ~0x3) == GFX_OP_SCISSOR_ENABLE) {
662 OUT_RING(tmp);
663 } else {
664 DRM_ERROR("bad scissor enable\n");
665 OUT_RING(0);
666 }
667
668 OUT_RING(GFX_OP_SCISSOR_RECT);
669 OUT_RING(code[I830_DESTREG_SR1]);
670 OUT_RING(code[I830_DESTREG_SR2]);
671 OUT_RING(0);
672
673 ADVANCE_LP_RING();
674 }
675
676 static void i830EmitStippleVerified(struct drm_device * dev, unsigned int *code)
677 {
678 drm_i830_private_t *dev_priv = dev->dev_private;
679 RING_LOCALS;
680
681 BEGIN_LP_RING(2);
682 OUT_RING(GFX_OP_STIPPLE);
683 OUT_RING(code[1]);
684 ADVANCE_LP_RING();
685 }
686
687 static void i830EmitState(struct drm_device * dev)
688 {
689 drm_i830_private_t *dev_priv = dev->dev_private;
690 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
691 unsigned int dirty = sarea_priv->dirty;
692
693 DRM_DEBUG("%s %x\n", __func__, dirty);
694
695 if (dirty & I830_UPLOAD_BUFFERS) {
696 i830EmitDestVerified(dev, sarea_priv->BufferState);
697 sarea_priv->dirty &= ~I830_UPLOAD_BUFFERS;
698 }
699
700 if (dirty & I830_UPLOAD_CTX) {
701 i830EmitContextVerified(dev, sarea_priv->ContextState);
702 sarea_priv->dirty &= ~I830_UPLOAD_CTX;
703 }
704
705 if (dirty & I830_UPLOAD_TEX0) {
706 i830EmitTexVerified(dev, sarea_priv->TexState[0]);
707 sarea_priv->dirty &= ~I830_UPLOAD_TEX0;
708 }
709
710 if (dirty & I830_UPLOAD_TEX1) {
711 i830EmitTexVerified(dev, sarea_priv->TexState[1]);
712 sarea_priv->dirty &= ~I830_UPLOAD_TEX1;
713 }
714
715 if (dirty & I830_UPLOAD_TEXBLEND0) {
716 i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[0],
717 sarea_priv->TexBlendStateWordsUsed[0]);
718 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND0;
719 }
720
721 if (dirty & I830_UPLOAD_TEXBLEND1) {
722 i830EmitTexBlendVerified(dev, sarea_priv->TexBlendState[1],
723 sarea_priv->TexBlendStateWordsUsed[1]);
724 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND1;
725 }
726
727 if (dirty & I830_UPLOAD_TEX_PALETTE_SHARED) {
728 i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 1);
729 } else {
730 if (dirty & I830_UPLOAD_TEX_PALETTE_N(0)) {
731 i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 0);
732 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(0);
733 }
734 if (dirty & I830_UPLOAD_TEX_PALETTE_N(1)) {
735 i830EmitTexPalette(dev, sarea_priv->Palette[1], 1, 0);
736 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(1);
737 }
738
739 /* 1.3:
740 */
741 #if 0
742 if (dirty & I830_UPLOAD_TEX_PALETTE_N(2)) {
743 i830EmitTexPalette(dev, sarea_priv->Palette2[0], 0, 0);
744 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
745 }
746 if (dirty & I830_UPLOAD_TEX_PALETTE_N(3)) {
747 i830EmitTexPalette(dev, sarea_priv->Palette2[1], 1, 0);
748 sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
749 }
750 #endif
751 }
752
753 /* 1.3:
754 */
755 if (dirty & I830_UPLOAD_STIPPLE) {
756 i830EmitStippleVerified(dev, sarea_priv->StippleState);
757 sarea_priv->dirty &= ~I830_UPLOAD_STIPPLE;
758 }
759
760 if (dirty & I830_UPLOAD_TEX2) {
761 i830EmitTexVerified(dev, sarea_priv->TexState2);
762 sarea_priv->dirty &= ~I830_UPLOAD_TEX2;
763 }
764
765 if (dirty & I830_UPLOAD_TEX3) {
766 i830EmitTexVerified(dev, sarea_priv->TexState3);
767 sarea_priv->dirty &= ~I830_UPLOAD_TEX3;
768 }
769
770 if (dirty & I830_UPLOAD_TEXBLEND2) {
771 i830EmitTexBlendVerified(dev,
772 sarea_priv->TexBlendState2,
773 sarea_priv->TexBlendStateWordsUsed2);
774
775 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND2;
776 }
777
778 if (dirty & I830_UPLOAD_TEXBLEND3) {
779 i830EmitTexBlendVerified(dev,
780 sarea_priv->TexBlendState3,
781 sarea_priv->TexBlendStateWordsUsed3);
782 sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND3;
783 }
784 }
785
786 /* ================================================================
787 * Performance monitoring functions
788 */
789
790 static void i830_fill_box(struct drm_device * dev,
791 int x, int y, int w, int h, int r, int g, int b)
792 {
793 drm_i830_private_t *dev_priv = dev->dev_private;
794 u32 color;
795 unsigned int BR13, CMD;
796 RING_LOCALS;
797
798 BR13 = (0xF0 << 16) | (dev_priv->pitch * dev_priv->cpp) | (1 << 24);
799 CMD = XY_COLOR_BLT_CMD;
800 x += dev_priv->sarea_priv->boxes[0].x1;
801 y += dev_priv->sarea_priv->boxes[0].y1;
802
803 if (dev_priv->cpp == 4) {
804 BR13 |= (1 << 25);
805 CMD |= (XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB);
806 color = (((0xff) << 24) | (r << 16) | (g << 8) | b);
807 } else {
808 color = (((r & 0xf8) << 8) |
809 ((g & 0xfc) << 3) | ((b & 0xf8) >> 3));
810 }
811
812 BEGIN_LP_RING(6);
813 OUT_RING(CMD);
814 OUT_RING(BR13);
815 OUT_RING((y << 16) | x);
816 OUT_RING(((y + h) << 16) | (x + w));
817
818 if (dev_priv->current_page == 1) {
819 OUT_RING(dev_priv->front_offset);
820 } else {
821 OUT_RING(dev_priv->back_offset);
822 }
823
824 OUT_RING(color);
825 ADVANCE_LP_RING();
826 }
827
828 static void i830_cp_performance_boxes(struct drm_device * dev)
829 {
830 drm_i830_private_t *dev_priv = dev->dev_private;
831
832 /* Purple box for page flipping
833 */
834 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_FLIP)
835 i830_fill_box(dev, 4, 4, 8, 8, 255, 0, 255);
836
837 /* Red box if we have to wait for idle at any point
838 */
839 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_WAIT)
840 i830_fill_box(dev, 16, 4, 8, 8, 255, 0, 0);
841
842 /* Blue box: lost context?
843 */
844 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_LOST_CONTEXT)
845 i830_fill_box(dev, 28, 4, 8, 8, 0, 0, 255);
846
847 /* Yellow box for texture swaps
848 */
849 if (dev_priv->sarea_priv->perf_boxes & I830_BOX_TEXTURE_LOAD)
850 i830_fill_box(dev, 40, 4, 8, 8, 255, 255, 0);
851
852 /* Green box if hardware never idles (as far as we can tell)
853 */
854 if (!(dev_priv->sarea_priv->perf_boxes & I830_BOX_RING_EMPTY))
855 i830_fill_box(dev, 64, 4, 8, 8, 0, 255, 0);
856
857 /* Draw bars indicating number of buffers allocated
858 * (not a great measure, easily confused)
859 */
860 if (dev_priv->dma_used) {
861 int bar = dev_priv->dma_used / 10240;
862 if (bar > 100)
863 bar = 100;
864 if (bar < 1)
865 bar = 1;
866 i830_fill_box(dev, 4, 16, bar, 4, 196, 128, 128);
867 dev_priv->dma_used = 0;
868 }
869
870 dev_priv->sarea_priv->perf_boxes = 0;
871 }
872
873 static void i830_dma_dispatch_clear(struct drm_device * dev, int flags,
874 unsigned int clear_color,
875 unsigned int clear_zval,
876 unsigned int clear_depthmask)
877 {
878 drm_i830_private_t *dev_priv = dev->dev_private;
879 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
880 int nbox = sarea_priv->nbox;
881 struct drm_clip_rect *pbox = sarea_priv->boxes;
882 int pitch = dev_priv->pitch;
883 int cpp = dev_priv->cpp;
884 int i;
885 unsigned int BR13, CMD, D_CMD;
886 RING_LOCALS;
887
888 if (dev_priv->current_page == 1) {
889 unsigned int tmp = flags;
890
891 flags &= ~(I830_FRONT | I830_BACK);
892 if (tmp & I830_FRONT)
893 flags |= I830_BACK;
894 if (tmp & I830_BACK)
895 flags |= I830_FRONT;
896 }
897
898 i830_kernel_lost_context(dev);
899
900 switch (cpp) {
901 case 2:
902 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24);
903 D_CMD = CMD = XY_COLOR_BLT_CMD;
904 break;
905 case 4:
906 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24) | (1 << 25);
907 CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
908 XY_COLOR_BLT_WRITE_RGB);
909 D_CMD = XY_COLOR_BLT_CMD;
910 if (clear_depthmask & 0x00ffffff)
911 D_CMD |= XY_COLOR_BLT_WRITE_RGB;
912 if (clear_depthmask & 0xff000000)
913 D_CMD |= XY_COLOR_BLT_WRITE_ALPHA;
914 break;
915 default:
916 BR13 = (0xF0 << 16) | (pitch * cpp) | (1 << 24);
917 D_CMD = CMD = XY_COLOR_BLT_CMD;
918 break;
919 }
920
921 if (nbox > I830_NR_SAREA_CLIPRECTS)
922 nbox = I830_NR_SAREA_CLIPRECTS;
923
924 for (i = 0; i < nbox; i++, pbox++) {
925 if (pbox->x1 > pbox->x2 ||
926 pbox->y1 > pbox->y2 ||
927 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
928 continue;
929
930 if (flags & I830_FRONT) {
931 DRM_DEBUG("clear front\n");
932 BEGIN_LP_RING(6);
933 OUT_RING(CMD);
934 OUT_RING(BR13);
935 OUT_RING((pbox->y1 << 16) | pbox->x1);
936 OUT_RING((pbox->y2 << 16) | pbox->x2);
937 OUT_RING(dev_priv->front_offset);
938 OUT_RING(clear_color);
939 ADVANCE_LP_RING();
940 }
941
942 if (flags & I830_BACK) {
943 DRM_DEBUG("clear back\n");
944 BEGIN_LP_RING(6);
945 OUT_RING(CMD);
946 OUT_RING(BR13);
947 OUT_RING((pbox->y1 << 16) | pbox->x1);
948 OUT_RING((pbox->y2 << 16) | pbox->x2);
949 OUT_RING(dev_priv->back_offset);
950 OUT_RING(clear_color);
951 ADVANCE_LP_RING();
952 }
953
954 if (flags & I830_DEPTH) {
955 DRM_DEBUG("clear depth\n");
956 BEGIN_LP_RING(6);
957 OUT_RING(D_CMD);
958 OUT_RING(BR13);
959 OUT_RING((pbox->y1 << 16) | pbox->x1);
960 OUT_RING((pbox->y2 << 16) | pbox->x2);
961 OUT_RING(dev_priv->depth_offset);
962 OUT_RING(clear_zval);
963 ADVANCE_LP_RING();
964 }
965 }
966 }
967
968 static void i830_dma_dispatch_swap(struct drm_device * dev)
969 {
970 drm_i830_private_t *dev_priv = dev->dev_private;
971 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
972 int nbox = sarea_priv->nbox;
973 struct drm_clip_rect *pbox = sarea_priv->boxes;
974 int pitch = dev_priv->pitch;
975 int cpp = dev_priv->cpp;
976 int i;
977 unsigned int CMD, BR13;
978 RING_LOCALS;
979
980 DRM_DEBUG("swapbuffers\n");
981
982 i830_kernel_lost_context(dev);
983
984 if (dev_priv->do_boxes)
985 i830_cp_performance_boxes(dev);
986
987 switch (cpp) {
988 case 2:
989 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
990 CMD = XY_SRC_COPY_BLT_CMD;
991 break;
992 case 4:
993 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25);
994 CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
995 XY_SRC_COPY_BLT_WRITE_RGB);
996 break;
997 default:
998 BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
999 CMD = XY_SRC_COPY_BLT_CMD;
1000 break;
1001 }
1002
1003 if (nbox > I830_NR_SAREA_CLIPRECTS)
1004 nbox = I830_NR_SAREA_CLIPRECTS;
1005
1006 for (i = 0; i < nbox; i++, pbox++) {
1007 if (pbox->x1 > pbox->x2 ||
1008 pbox->y1 > pbox->y2 ||
1009 pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
1010 continue;
1011
1012 DRM_DEBUG("dispatch swap %d,%d-%d,%d!\n",
1013 pbox->x1, pbox->y1, pbox->x2, pbox->y2);
1014
1015 BEGIN_LP_RING(8);
1016 OUT_RING(CMD);
1017 OUT_RING(BR13);
1018 OUT_RING((pbox->y1 << 16) | pbox->x1);
1019 OUT_RING((pbox->y2 << 16) | pbox->x2);
1020
1021 if (dev_priv->current_page == 0)
1022 OUT_RING(dev_priv->front_offset);
1023 else
1024 OUT_RING(dev_priv->back_offset);
1025
1026 OUT_RING((pbox->y1 << 16) | pbox->x1);
1027 OUT_RING(BR13 & 0xffff);
1028
1029 if (dev_priv->current_page == 0)
1030 OUT_RING(dev_priv->back_offset);
1031 else
1032 OUT_RING(dev_priv->front_offset);
1033
1034 ADVANCE_LP_RING();
1035 }
1036 }
1037
1038 static void i830_dma_dispatch_flip(struct drm_device * dev)
1039 {
1040 drm_i830_private_t *dev_priv = dev->dev_private;
1041 RING_LOCALS;
1042
1043 DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
1044 __func__,
1045 dev_priv->current_page,
1046 dev_priv->sarea_priv->pf_current_page);
1047
1048 i830_kernel_lost_context(dev);
1049
1050 if (dev_priv->do_boxes) {
1051 dev_priv->sarea_priv->perf_boxes |= I830_BOX_FLIP;
1052 i830_cp_performance_boxes(dev);
1053 }
1054
1055 BEGIN_LP_RING(2);
1056 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
1057 OUT_RING(0);
1058 ADVANCE_LP_RING();
1059
1060 BEGIN_LP_RING(6);
1061 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
1062 OUT_RING(0);
1063 if (dev_priv->current_page == 0) {
1064 OUT_RING(dev_priv->back_offset);
1065 dev_priv->current_page = 1;
1066 } else {
1067 OUT_RING(dev_priv->front_offset);
1068 dev_priv->current_page = 0;
1069 }
1070 OUT_RING(0);
1071 ADVANCE_LP_RING();
1072
1073 BEGIN_LP_RING(2);
1074 OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
1075 OUT_RING(0);
1076 ADVANCE_LP_RING();
1077
1078 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1079 }
1080
1081 static void i830_dma_dispatch_vertex(struct drm_device * dev,
1082 struct drm_buf * buf, int discard, int used)
1083 {
1084 drm_i830_private_t *dev_priv = dev->dev_private;
1085 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1086 drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
1087 struct drm_clip_rect *box = sarea_priv->boxes;
1088 int nbox = sarea_priv->nbox;
1089 unsigned long address = (unsigned long)buf->bus_address;
1090 unsigned long start = address - dev->agp->base;
1091 int i = 0, u;
1092 RING_LOCALS;
1093
1094 i830_kernel_lost_context(dev);
1095
1096 if (nbox > I830_NR_SAREA_CLIPRECTS)
1097 nbox = I830_NR_SAREA_CLIPRECTS;
1098
1099 if (discard) {
1100 u = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1101 I830_BUF_HARDWARE);
1102 if (u != I830_BUF_CLIENT) {
1103 DRM_DEBUG("xxxx 2\n");
1104 }
1105 }
1106
1107 if (used > 4 * 1023)
1108 used = 0;
1109
1110 if (sarea_priv->dirty)
1111 i830EmitState(dev);
1112
1113 DRM_DEBUG("dispatch vertex addr 0x%lx, used 0x%x nbox %d\n",
1114 address, used, nbox);
1115
1116 dev_priv->counter++;
1117 DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1118 DRM_DEBUG("i830_dma_dispatch\n");
1119 DRM_DEBUG("start : %lx\n", start);
1120 DRM_DEBUG("used : %d\n", used);
1121 DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1122
1123 if (buf_priv->currently_mapped == I830_BUF_MAPPED) {
1124 u32 *vp = buf_priv->kernel_virtual;
1125
1126 vp[0] = (GFX_OP_PRIMITIVE |
1127 sarea_priv->vertex_prim | ((used / 4) - 2));
1128
1129 if (dev_priv->use_mi_batchbuffer_start) {
1130 vp[used / 4] = MI_BATCH_BUFFER_END;
1131 used += 4;
1132 }
1133
1134 if (used & 4) {
1135 vp[used / 4] = 0;
1136 used += 4;
1137 }
1138
1139 i830_unmap_buffer(buf);
1140 }
1141
1142 if (used) {
1143 do {
1144 if (i < nbox) {
1145 BEGIN_LP_RING(6);
1146 OUT_RING(GFX_OP_DRAWRECT_INFO);
1147 OUT_RING(sarea_priv->
1148 BufferState[I830_DESTREG_DR1]);
1149 OUT_RING(box[i].x1 | (box[i].y1 << 16));
1150 OUT_RING(box[i].x2 | (box[i].y2 << 16));
1151 OUT_RING(sarea_priv->
1152 BufferState[I830_DESTREG_DR4]);
1153 OUT_RING(0);
1154 ADVANCE_LP_RING();
1155 }
1156
1157 if (dev_priv->use_mi_batchbuffer_start) {
1158 BEGIN_LP_RING(2);
1159 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
1160 OUT_RING(start | MI_BATCH_NON_SECURE);
1161 ADVANCE_LP_RING();
1162 } else {
1163 BEGIN_LP_RING(4);
1164 OUT_RING(MI_BATCH_BUFFER);
1165 OUT_RING(start | MI_BATCH_NON_SECURE);
1166 OUT_RING(start + used - 4);
1167 OUT_RING(0);
1168 ADVANCE_LP_RING();
1169 }
1170
1171 } while (++i < nbox);
1172 }
1173
1174 if (discard) {
1175 dev_priv->counter++;
1176
1177 (void)cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1178 I830_BUF_HARDWARE);
1179
1180 BEGIN_LP_RING(8);
1181 OUT_RING(CMD_STORE_DWORD_IDX);
1182 OUT_RING(20);
1183 OUT_RING(dev_priv->counter);
1184 OUT_RING(CMD_STORE_DWORD_IDX);
1185 OUT_RING(buf_priv->my_use_idx);
1186 OUT_RING(I830_BUF_FREE);
1187 OUT_RING(CMD_REPORT_HEAD);
1188 OUT_RING(0);
1189 ADVANCE_LP_RING();
1190 }
1191 }
1192
1193 static void i830_dma_quiescent(struct drm_device * dev)
1194 {
1195 drm_i830_private_t *dev_priv = dev->dev_private;
1196 RING_LOCALS;
1197
1198 i830_kernel_lost_context(dev);
1199
1200 BEGIN_LP_RING(4);
1201 OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
1202 OUT_RING(CMD_REPORT_HEAD);
1203 OUT_RING(0);
1204 OUT_RING(0);
1205 ADVANCE_LP_RING();
1206
1207 i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
1208 }
1209
1210 static int i830_flush_queue(struct drm_device * dev)
1211 {
1212 drm_i830_private_t *dev_priv = dev->dev_private;
1213 struct drm_device_dma *dma = dev->dma;
1214 int i, ret = 0;
1215 RING_LOCALS;
1216
1217 i830_kernel_lost_context(dev);
1218
1219 BEGIN_LP_RING(2);
1220 OUT_RING(CMD_REPORT_HEAD);
1221 OUT_RING(0);
1222 ADVANCE_LP_RING();
1223
1224 i830_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
1225
1226 for (i = 0; i < dma->buf_count; i++) {
1227 struct drm_buf *buf = dma->buflist[i];
1228 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1229
1230 int used = cmpxchg(buf_priv->in_use, I830_BUF_HARDWARE,
1231 I830_BUF_FREE);
1232
1233 if (used == I830_BUF_HARDWARE)
1234 DRM_DEBUG("reclaimed from HARDWARE\n");
1235 if (used == I830_BUF_CLIENT)
1236 DRM_DEBUG("still on client\n");
1237 }
1238
1239 return ret;
1240 }
1241
1242 /* Must be called with the lock held */
1243 static void i830_reclaim_buffers(struct drm_device * dev, struct drm_file *file_priv)
1244 {
1245 struct drm_device_dma *dma = dev->dma;
1246 int i;
1247
1248 if (!dma)
1249 return;
1250 if (!dev->dev_private)
1251 return;
1252 if (!dma->buflist)
1253 return;
1254
1255 i830_flush_queue(dev);
1256
1257 for (i = 0; i < dma->buf_count; i++) {
1258 struct drm_buf *buf = dma->buflist[i];
1259 drm_i830_buf_priv_t *buf_priv = buf->dev_private;
1260
1261 if (buf->file_priv == file_priv && buf_priv) {
1262 int used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
1263 I830_BUF_FREE);
1264
1265 if (used == I830_BUF_CLIENT)
1266 DRM_DEBUG("reclaimed from client\n");
1267 if (buf_priv->currently_mapped == I830_BUF_MAPPED)
1268 buf_priv->currently_mapped = I830_BUF_UNMAPPED;
1269 }
1270 }
1271 }
1272
1273 static int i830_flush_ioctl(struct drm_device *dev, void *data,
1274 struct drm_file *file_priv)
1275 {
1276 LOCK_TEST_WITH_RETURN(dev, file_priv);
1277
1278 i830_flush_queue(dev);
1279 return 0;
1280 }
1281
1282 static int i830_dma_vertex(struct drm_device *dev, void *data,
1283 struct drm_file *file_priv)
1284 {
1285 struct drm_device_dma *dma = dev->dma;
1286 drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1287 u32 *hw_status = dev_priv->hw_status_page;
1288 drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1289 dev_priv->sarea_priv;
1290 drm_i830_vertex_t *vertex = data;
1291
1292 LOCK_TEST_WITH_RETURN(dev, file_priv);
1293
1294 DRM_DEBUG("i830 dma vertex, idx %d used %d discard %d\n",
1295 vertex->idx, vertex->used, vertex->discard);
1296
1297 if (vertex->idx < 0 || vertex->idx > dma->buf_count)
1298 return -EINVAL;
1299
1300 i830_dma_dispatch_vertex(dev,
1301 dma->buflist[vertex->idx],
1302 vertex->discard, vertex->used);
1303
1304 sarea_priv->last_enqueue = dev_priv->counter - 1;
1305 sarea_priv->last_dispatch = (int)hw_status[5];
1306
1307 return 0;
1308 }
1309
1310 static int i830_clear_bufs(struct drm_device *dev, void *data,
1311 struct drm_file *file_priv)
1312 {
1313 drm_i830_clear_t *clear = data;
1314
1315 LOCK_TEST_WITH_RETURN(dev, file_priv);
1316
1317 /* GH: Someone's doing nasty things... */
1318 if (!dev->dev_private) {
1319 return -EINVAL;
1320 }
1321
1322 i830_dma_dispatch_clear(dev, clear->flags,
1323 clear->clear_color,
1324 clear->clear_depth, clear->clear_depthmask);
1325 return 0;
1326 }
1327
1328 static int i830_swap_bufs(struct drm_device *dev, void *data,
1329 struct drm_file *file_priv)
1330 {
1331 DRM_DEBUG("i830_swap_bufs\n");
1332
1333 LOCK_TEST_WITH_RETURN(dev, file_priv);
1334
1335 i830_dma_dispatch_swap(dev);
1336 return 0;
1337 }
1338
1339 /* Not sure why this isn't set all the time:
1340 */
1341 static void i830_do_init_pageflip(struct drm_device * dev)
1342 {
1343 drm_i830_private_t *dev_priv = dev->dev_private;
1344
1345 DRM_DEBUG("%s\n", __func__);
1346 dev_priv->page_flipping = 1;
1347 dev_priv->current_page = 0;
1348 dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1349 }
1350
1351 static int i830_do_cleanup_pageflip(struct drm_device * dev)
1352 {
1353 drm_i830_private_t *dev_priv = dev->dev_private;
1354
1355 DRM_DEBUG("%s\n", __func__);
1356 if (dev_priv->current_page != 0)
1357 i830_dma_dispatch_flip(dev);
1358
1359 dev_priv->page_flipping = 0;
1360 return 0;
1361 }
1362
1363 static int i830_flip_bufs(struct drm_device *dev, void *data,
1364 struct drm_file *file_priv)
1365 {
1366 drm_i830_private_t *dev_priv = dev->dev_private;
1367
1368 DRM_DEBUG("%s\n", __func__);
1369
1370 LOCK_TEST_WITH_RETURN(dev, file_priv);
1371
1372 if (!dev_priv->page_flipping)
1373 i830_do_init_pageflip(dev);
1374
1375 i830_dma_dispatch_flip(dev);
1376 return 0;
1377 }
1378
1379 static int i830_getage(struct drm_device *dev, void *data,
1380 struct drm_file *file_priv)
1381 {
1382 drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1383 u32 *hw_status = dev_priv->hw_status_page;
1384 drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1385 dev_priv->sarea_priv;
1386
1387 sarea_priv->last_dispatch = (int)hw_status[5];
1388 return 0;
1389 }
1390
1391 static int i830_getbuf(struct drm_device *dev, void *data,
1392 struct drm_file *file_priv)
1393 {
1394 int retcode = 0;
1395 drm_i830_dma_t *d = data;
1396 drm_i830_private_t *dev_priv = (drm_i830_private_t *) dev->dev_private;
1397 u32 *hw_status = dev_priv->hw_status_page;
1398 drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
1399 dev_priv->sarea_priv;
1400
1401 DRM_DEBUG("getbuf\n");
1402
1403 LOCK_TEST_WITH_RETURN(dev, file_priv);
1404
1405 d->granted = 0;
1406
1407 retcode = i830_dma_get_buffer(dev, d, file_priv);
1408
1409 DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n",
1410 task_pid_nr(current), retcode, d->granted);
1411
1412 sarea_priv->last_dispatch = (int)hw_status[5];
1413
1414 return retcode;
1415 }
1416
1417 static int i830_copybuf(struct drm_device *dev, void *data,
1418 struct drm_file *file_priv)
1419 {
1420 /* Never copy - 2.4.x doesn't need it */
1421 return 0;
1422 }
1423
1424 static int i830_docopy(struct drm_device *dev, void *data,
1425 struct drm_file *file_priv)
1426 {
1427 return 0;
1428 }
1429
1430 static int i830_getparam(struct drm_device *dev, void *data,
1431 struct drm_file *file_priv)
1432 {
1433 drm_i830_private_t *dev_priv = dev->dev_private;
1434 drm_i830_getparam_t *param = data;
1435 int value;
1436
1437 if (!dev_priv) {
1438 DRM_ERROR("%s called with no initialization\n", __func__);
1439 return -EINVAL;
1440 }
1441
1442 switch (param->param) {
1443 case I830_PARAM_IRQ_ACTIVE:
1444 value = dev->irq_enabled;
1445 break;
1446 default:
1447 return -EINVAL;
1448 }
1449
1450 if (copy_to_user(param->value, &value, sizeof(int))) {
1451 DRM_ERROR("copy_to_user\n");
1452 return -EFAULT;
1453 }
1454
1455 return 0;
1456 }
1457
1458 static int i830_setparam(struct drm_device *dev, void *data,
1459 struct drm_file *file_priv)
1460 {
1461 drm_i830_private_t *dev_priv = dev->dev_private;
1462 drm_i830_setparam_t *param = data;
1463
1464 if (!dev_priv) {
1465 DRM_ERROR("%s called with no initialization\n", __func__);
1466 return -EINVAL;
1467 }
1468
1469 switch (param->param) {
1470 case I830_SETPARAM_USE_MI_BATCHBUFFER_START:
1471 dev_priv->use_mi_batchbuffer_start = param->value;
1472 break;
1473 default:
1474 return -EINVAL;
1475 }
1476
1477 return 0;
1478 }
1479
1480 int i830_driver_load(struct drm_device *dev, unsigned long flags)
1481 {
1482 /* i830 has 4 more counters */
1483 dev->counters += 4;
1484 dev->types[6] = _DRM_STAT_IRQ;
1485 dev->types[7] = _DRM_STAT_PRIMARY;
1486 dev->types[8] = _DRM_STAT_SECONDARY;
1487 dev->types[9] = _DRM_STAT_DMA;
1488
1489 return 0;
1490 }
1491
1492 void i830_driver_lastclose(struct drm_device * dev)
1493 {
1494 i830_dma_cleanup(dev);
1495 }
1496
1497 void i830_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1498 {
1499 if (dev->dev_private) {
1500 drm_i830_private_t *dev_priv = dev->dev_private;
1501 if (dev_priv->page_flipping) {
1502 i830_do_cleanup_pageflip(dev);
1503 }
1504 }
1505 }
1506
1507 void i830_driver_reclaim_buffers_locked(struct drm_device * dev, struct drm_file *file_priv)
1508 {
1509 i830_reclaim_buffers(dev, file_priv);
1510 }
1511
1512 int i830_driver_dma_quiescent(struct drm_device * dev)
1513 {
1514 i830_dma_quiescent(dev);
1515 return 0;
1516 }
1517
1518 struct drm_ioctl_desc i830_ioctls[] = {
1519 DRM_IOCTL_DEF(DRM_I830_INIT, i830_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1520 DRM_IOCTL_DEF(DRM_I830_VERTEX, i830_dma_vertex, DRM_AUTH),
1521 DRM_IOCTL_DEF(DRM_I830_CLEAR, i830_clear_bufs, DRM_AUTH),
1522 DRM_IOCTL_DEF(DRM_I830_FLUSH, i830_flush_ioctl, DRM_AUTH),
1523 DRM_IOCTL_DEF(DRM_I830_GETAGE, i830_getage, DRM_AUTH),
1524 DRM_IOCTL_DEF(DRM_I830_GETBUF, i830_getbuf, DRM_AUTH),
1525 DRM_IOCTL_DEF(DRM_I830_SWAP, i830_swap_bufs, DRM_AUTH),
1526 DRM_IOCTL_DEF(DRM_I830_COPY, i830_copybuf, DRM_AUTH),
1527 DRM_IOCTL_DEF(DRM_I830_DOCOPY, i830_docopy, DRM_AUTH),
1528 DRM_IOCTL_DEF(DRM_I830_FLIP, i830_flip_bufs, DRM_AUTH),
1529 DRM_IOCTL_DEF(DRM_I830_IRQ_EMIT, i830_irq_emit, DRM_AUTH),
1530 DRM_IOCTL_DEF(DRM_I830_IRQ_WAIT, i830_irq_wait, DRM_AUTH),
1531 DRM_IOCTL_DEF(DRM_I830_GETPARAM, i830_getparam, DRM_AUTH),
1532 DRM_IOCTL_DEF(DRM_I830_SETPARAM, i830_setparam, DRM_AUTH)
1533 };
1534
1535 int i830_max_ioctl = DRM_ARRAY_SIZE(i830_ioctls);
1536
1537 /**
1538 * Determine if the device really is AGP or not.
1539 *
1540 * All Intel graphics chipsets are treated as AGP, even if they are really
1541 * PCI-e.
1542 *
1543 * \param dev The device to be tested.
1544 *
1545 * \returns
1546 * A value of 1 is always retured to indictate every i8xx is AGP.
1547 */
1548 int i830_driver_device_is_agp(struct drm_device * dev)
1549 {
1550 return 1;
1551 }
Support for the Chinese Samsung S3C2440 based development boards