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authorDave Airlie <airlied@redhat.com>2008-05-28 20:09:59 -0400
committerDave Airlie <airlied@redhat.com>2008-07-13 20:45:01 -0400
commitc0e09200dc0813972442e550a5905a132768e56c (patch)
treed38e635a30ff8b0a2b98b9d7f97cab1501f8209e /drivers/gpu/drm/savage
parentbce7f793daec3e65ec5c5705d2457b81fe7b5725 (diff)
drm: reorganise drm tree to be more future proof.
With the coming of kernel based modesetting and the memory manager stuff, the everything in one directory approach was getting very ugly and starting to be unmanageable. This restructures the drm along the lines of other kernel components. It creates a drivers/gpu/drm directory and moves the hw drivers into subdirectores. It moves the includes into an include/drm, and sets up the unifdef for the userspace headers we should be exporting. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/savage')
-rw-r--r--drivers/gpu/drm/savage/Makefile9
-rw-r--r--drivers/gpu/drm/savage/savage_bci.c1095
-rw-r--r--drivers/gpu/drm/savage/savage_drv.c88
-rw-r--r--drivers/gpu/drm/savage/savage_drv.h575
-rw-r--r--drivers/gpu/drm/savage/savage_state.c1163
5 files changed, 2930 insertions, 0 deletions
diff --git a/drivers/gpu/drm/savage/Makefile b/drivers/gpu/drm/savage/Makefile
new file mode 100644
index 000000000000..d8f84ac7bb26
--- /dev/null
+++ b/drivers/gpu/drm/savage/Makefile
@@ -0,0 +1,9 @@
1#
2# Makefile for the drm device driver. This driver provides support for the
3# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
4
5ccflags-y = -Iinclude/drm
6savage-y := savage_drv.o savage_bci.o savage_state.o
7
8obj-$(CONFIG_DRM_SAVAGE)+= savage.o
9
diff --git a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c
new file mode 100644
index 000000000000..d465b2f9c1cd
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_bci.c
@@ -0,0 +1,1095 @@
1/* savage_bci.c -- BCI support for Savage
2 *
3 * Copyright 2004 Felix Kuehling
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sub license,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
22 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25#include "drmP.h"
26#include "savage_drm.h"
27#include "savage_drv.h"
28
29/* Need a long timeout for shadow status updates can take a while
30 * and so can waiting for events when the queue is full. */
31#define SAVAGE_DEFAULT_USEC_TIMEOUT 1000000 /* 1s */
32#define SAVAGE_EVENT_USEC_TIMEOUT 5000000 /* 5s */
33#define SAVAGE_FREELIST_DEBUG 0
34
35static int savage_do_cleanup_bci(struct drm_device *dev);
36
37static int
38savage_bci_wait_fifo_shadow(drm_savage_private_t * dev_priv, unsigned int n)
39{
40 uint32_t mask = dev_priv->status_used_mask;
41 uint32_t threshold = dev_priv->bci_threshold_hi;
42 uint32_t status;
43 int i;
44
45#if SAVAGE_BCI_DEBUG
46 if (n > dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - threshold)
47 DRM_ERROR("Trying to emit %d words "
48 "(more than guaranteed space in COB)\n", n);
49#endif
50
51 for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
52 DRM_MEMORYBARRIER();
53 status = dev_priv->status_ptr[0];
54 if ((status & mask) < threshold)
55 return 0;
56 DRM_UDELAY(1);
57 }
58
59#if SAVAGE_BCI_DEBUG
60 DRM_ERROR("failed!\n");
61 DRM_INFO(" status=0x%08x, threshold=0x%08x\n", status, threshold);
62#endif
63 return -EBUSY;
64}
65
66static int
67savage_bci_wait_fifo_s3d(drm_savage_private_t * dev_priv, unsigned int n)
68{
69 uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
70 uint32_t status;
71 int i;
72
73 for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
74 status = SAVAGE_READ(SAVAGE_STATUS_WORD0);
75 if ((status & SAVAGE_FIFO_USED_MASK_S3D) <= maxUsed)
76 return 0;
77 DRM_UDELAY(1);
78 }
79
80#if SAVAGE_BCI_DEBUG
81 DRM_ERROR("failed!\n");
82 DRM_INFO(" status=0x%08x\n", status);
83#endif
84 return -EBUSY;
85}
86
87static int
88savage_bci_wait_fifo_s4(drm_savage_private_t * dev_priv, unsigned int n)
89{
90 uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
91 uint32_t status;
92 int i;
93
94 for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
95 status = SAVAGE_READ(SAVAGE_ALT_STATUS_WORD0);
96 if ((status & SAVAGE_FIFO_USED_MASK_S4) <= maxUsed)
97 return 0;
98 DRM_UDELAY(1);
99 }
100
101#if SAVAGE_BCI_DEBUG
102 DRM_ERROR("failed!\n");
103 DRM_INFO(" status=0x%08x\n", status);
104#endif
105 return -EBUSY;
106}
107
108/*
109 * Waiting for events.
110 *
111 * The BIOSresets the event tag to 0 on mode changes. Therefore we
112 * never emit 0 to the event tag. If we find a 0 event tag we know the
113 * BIOS stomped on it and return success assuming that the BIOS waited
114 * for engine idle.
115 *
116 * Note: if the Xserver uses the event tag it has to follow the same
117 * rule. Otherwise there may be glitches every 2^16 events.
118 */
119static int
120savage_bci_wait_event_shadow(drm_savage_private_t * dev_priv, uint16_t e)
121{
122 uint32_t status;
123 int i;
124
125 for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
126 DRM_MEMORYBARRIER();
127 status = dev_priv->status_ptr[1];
128 if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
129 (status & 0xffff) == 0)
130 return 0;
131 DRM_UDELAY(1);
132 }
133
134#if SAVAGE_BCI_DEBUG
135 DRM_ERROR("failed!\n");
136 DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e);
137#endif
138
139 return -EBUSY;
140}
141
142static int
143savage_bci_wait_event_reg(drm_savage_private_t * dev_priv, uint16_t e)
144{
145 uint32_t status;
146 int i;
147
148 for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
149 status = SAVAGE_READ(SAVAGE_STATUS_WORD1);
150 if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
151 (status & 0xffff) == 0)
152 return 0;
153 DRM_UDELAY(1);
154 }
155
156#if SAVAGE_BCI_DEBUG
157 DRM_ERROR("failed!\n");
158 DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e);
159#endif
160
161 return -EBUSY;
162}
163
164uint16_t savage_bci_emit_event(drm_savage_private_t * dev_priv,
165 unsigned int flags)
166{
167 uint16_t count;
168 BCI_LOCALS;
169
170 if (dev_priv->status_ptr) {
171 /* coordinate with Xserver */
172 count = dev_priv->status_ptr[1023];
173 if (count < dev_priv->event_counter)
174 dev_priv->event_wrap++;
175 } else {
176 count = dev_priv->event_counter;
177 }
178 count = (count + 1) & 0xffff;
179 if (count == 0) {
180 count++; /* See the comment above savage_wait_event_*. */
181 dev_priv->event_wrap++;
182 }
183 dev_priv->event_counter = count;
184 if (dev_priv->status_ptr)
185 dev_priv->status_ptr[1023] = (uint32_t) count;
186
187 if ((flags & (SAVAGE_WAIT_2D | SAVAGE_WAIT_3D))) {
188 unsigned int wait_cmd = BCI_CMD_WAIT;
189 if ((flags & SAVAGE_WAIT_2D))
190 wait_cmd |= BCI_CMD_WAIT_2D;
191 if ((flags & SAVAGE_WAIT_3D))
192 wait_cmd |= BCI_CMD_WAIT_3D;
193 BEGIN_BCI(2);
194 BCI_WRITE(wait_cmd);
195 } else {
196 BEGIN_BCI(1);
197 }
198 BCI_WRITE(BCI_CMD_UPDATE_EVENT_TAG | (uint32_t) count);
199
200 return count;
201}
202
203/*
204 * Freelist management
205 */
206static int savage_freelist_init(struct drm_device * dev)
207{
208 drm_savage_private_t *dev_priv = dev->dev_private;
209 struct drm_device_dma *dma = dev->dma;
210 struct drm_buf *buf;
211 drm_savage_buf_priv_t *entry;
212 int i;
213 DRM_DEBUG("count=%d\n", dma->buf_count);
214
215 dev_priv->head.next = &dev_priv->tail;
216 dev_priv->head.prev = NULL;
217 dev_priv->head.buf = NULL;
218
219 dev_priv->tail.next = NULL;
220 dev_priv->tail.prev = &dev_priv->head;
221 dev_priv->tail.buf = NULL;
222
223 for (i = 0; i < dma->buf_count; i++) {
224 buf = dma->buflist[i];
225 entry = buf->dev_private;
226
227 SET_AGE(&entry->age, 0, 0);
228 entry->buf = buf;
229
230 entry->next = dev_priv->head.next;
231 entry->prev = &dev_priv->head;
232 dev_priv->head.next->prev = entry;
233 dev_priv->head.next = entry;
234 }
235
236 return 0;
237}
238
239static struct drm_buf *savage_freelist_get(struct drm_device * dev)
240{
241 drm_savage_private_t *dev_priv = dev->dev_private;
242 drm_savage_buf_priv_t *tail = dev_priv->tail.prev;
243 uint16_t event;
244 unsigned int wrap;
245 DRM_DEBUG("\n");
246
247 UPDATE_EVENT_COUNTER();
248 if (dev_priv->status_ptr)
249 event = dev_priv->status_ptr[1] & 0xffff;
250 else
251 event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
252 wrap = dev_priv->event_wrap;
253 if (event > dev_priv->event_counter)
254 wrap--; /* hardware hasn't passed the last wrap yet */
255
256 DRM_DEBUG(" tail=0x%04x %d\n", tail->age.event, tail->age.wrap);
257 DRM_DEBUG(" head=0x%04x %d\n", event, wrap);
258
259 if (tail->buf && (TEST_AGE(&tail->age, event, wrap) || event == 0)) {
260 drm_savage_buf_priv_t *next = tail->next;
261 drm_savage_buf_priv_t *prev = tail->prev;
262 prev->next = next;
263 next->prev = prev;
264 tail->next = tail->prev = NULL;
265 return tail->buf;
266 }
267
268 DRM_DEBUG("returning NULL, tail->buf=%p!\n", tail->buf);
269 return NULL;
270}
271
272void savage_freelist_put(struct drm_device * dev, struct drm_buf * buf)
273{
274 drm_savage_private_t *dev_priv = dev->dev_private;
275 drm_savage_buf_priv_t *entry = buf->dev_private, *prev, *next;
276
277 DRM_DEBUG("age=0x%04x wrap=%d\n", entry->age.event, entry->age.wrap);
278
279 if (entry->next != NULL || entry->prev != NULL) {
280 DRM_ERROR("entry already on freelist.\n");
281 return;
282 }
283
284 prev = &dev_priv->head;
285 next = prev->next;
286 prev->next = entry;
287 next->prev = entry;
288 entry->prev = prev;
289 entry->next = next;
290}
291
292/*
293 * Command DMA
294 */
295static int savage_dma_init(drm_savage_private_t * dev_priv)
296{
297 unsigned int i;
298
299 dev_priv->nr_dma_pages = dev_priv->cmd_dma->size /
300 (SAVAGE_DMA_PAGE_SIZE * 4);
301 dev_priv->dma_pages = drm_alloc(sizeof(drm_savage_dma_page_t) *
302 dev_priv->nr_dma_pages, DRM_MEM_DRIVER);
303 if (dev_priv->dma_pages == NULL)
304 return -ENOMEM;
305
306 for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
307 SET_AGE(&dev_priv->dma_pages[i].age, 0, 0);
308 dev_priv->dma_pages[i].used = 0;
309 dev_priv->dma_pages[i].flushed = 0;
310 }
311 SET_AGE(&dev_priv->last_dma_age, 0, 0);
312
313 dev_priv->first_dma_page = 0;
314 dev_priv->current_dma_page = 0;
315
316 return 0;
317}
318
319void savage_dma_reset(drm_savage_private_t * dev_priv)
320{
321 uint16_t event;
322 unsigned int wrap, i;
323 event = savage_bci_emit_event(dev_priv, 0);
324 wrap = dev_priv->event_wrap;
325 for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
326 SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
327 dev_priv->dma_pages[i].used = 0;
328 dev_priv->dma_pages[i].flushed = 0;
329 }
330 SET_AGE(&dev_priv->last_dma_age, event, wrap);
331 dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
332}
333
334void savage_dma_wait(drm_savage_private_t * dev_priv, unsigned int page)
335{
336 uint16_t event;
337 unsigned int wrap;
338
339 /* Faked DMA buffer pages don't age. */
340 if (dev_priv->cmd_dma == &dev_priv->fake_dma)
341 return;
342
343 UPDATE_EVENT_COUNTER();
344 if (dev_priv->status_ptr)
345 event = dev_priv->status_ptr[1] & 0xffff;
346 else
347 event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
348 wrap = dev_priv->event_wrap;
349 if (event > dev_priv->event_counter)
350 wrap--; /* hardware hasn't passed the last wrap yet */
351
352 if (dev_priv->dma_pages[page].age.wrap > wrap ||
353 (dev_priv->dma_pages[page].age.wrap == wrap &&
354 dev_priv->dma_pages[page].age.event > event)) {
355 if (dev_priv->wait_evnt(dev_priv,
356 dev_priv->dma_pages[page].age.event)
357 < 0)
358 DRM_ERROR("wait_evnt failed!\n");
359 }
360}
361
362uint32_t *savage_dma_alloc(drm_savage_private_t * dev_priv, unsigned int n)
363{
364 unsigned int cur = dev_priv->current_dma_page;
365 unsigned int rest = SAVAGE_DMA_PAGE_SIZE -
366 dev_priv->dma_pages[cur].used;
367 unsigned int nr_pages = (n - rest + SAVAGE_DMA_PAGE_SIZE - 1) /
368 SAVAGE_DMA_PAGE_SIZE;
369 uint32_t *dma_ptr;
370 unsigned int i;
371
372 DRM_DEBUG("cur=%u, cur->used=%u, n=%u, rest=%u, nr_pages=%u\n",
373 cur, dev_priv->dma_pages[cur].used, n, rest, nr_pages);
374
375 if (cur + nr_pages < dev_priv->nr_dma_pages) {
376 dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
377 cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
378 if (n < rest)
379 rest = n;
380 dev_priv->dma_pages[cur].used += rest;
381 n -= rest;
382 cur++;
383 } else {
384 dev_priv->dma_flush(dev_priv);
385 nr_pages =
386 (n + SAVAGE_DMA_PAGE_SIZE - 1) / SAVAGE_DMA_PAGE_SIZE;
387 for (i = cur; i < dev_priv->nr_dma_pages; ++i) {
388 dev_priv->dma_pages[i].age = dev_priv->last_dma_age;
389 dev_priv->dma_pages[i].used = 0;
390 dev_priv->dma_pages[i].flushed = 0;
391 }
392 dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle;
393 dev_priv->first_dma_page = cur = 0;
394 }
395 for (i = cur; nr_pages > 0; ++i, --nr_pages) {
396#if SAVAGE_DMA_DEBUG
397 if (dev_priv->dma_pages[i].used) {
398 DRM_ERROR("unflushed page %u: used=%u\n",
399 i, dev_priv->dma_pages[i].used);
400 }
401#endif
402 if (n > SAVAGE_DMA_PAGE_SIZE)
403 dev_priv->dma_pages[i].used = SAVAGE_DMA_PAGE_SIZE;
404 else
405 dev_priv->dma_pages[i].used = n;
406 n -= SAVAGE_DMA_PAGE_SIZE;
407 }
408 dev_priv->current_dma_page = --i;
409
410 DRM_DEBUG("cur=%u, cur->used=%u, n=%u\n",
411 i, dev_priv->dma_pages[i].used, n);
412
413 savage_dma_wait(dev_priv, dev_priv->current_dma_page);
414
415 return dma_ptr;
416}
417
418static void savage_dma_flush(drm_savage_private_t * dev_priv)
419{
420 unsigned int first = dev_priv->first_dma_page;
421 unsigned int cur = dev_priv->current_dma_page;
422 uint16_t event;
423 unsigned int wrap, pad, align, len, i;
424 unsigned long phys_addr;
425 BCI_LOCALS;
426
427 if (first == cur &&
428 dev_priv->dma_pages[cur].used == dev_priv->dma_pages[cur].flushed)
429 return;
430
431 /* pad length to multiples of 2 entries
432 * align start of next DMA block to multiles of 8 entries */
433 pad = -dev_priv->dma_pages[cur].used & 1;
434 align = -(dev_priv->dma_pages[cur].used + pad) & 7;
435
436 DRM_DEBUG("first=%u, cur=%u, first->flushed=%u, cur->used=%u, "
437 "pad=%u, align=%u\n",
438 first, cur, dev_priv->dma_pages[first].flushed,
439 dev_priv->dma_pages[cur].used, pad, align);
440
441 /* pad with noops */
442 if (pad) {
443 uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
444 cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
445 dev_priv->dma_pages[cur].used += pad;
446 while (pad != 0) {
447 *dma_ptr++ = BCI_CMD_WAIT;
448 pad--;
449 }
450 }
451
452 DRM_MEMORYBARRIER();
453
454 /* do flush ... */
455 phys_addr = dev_priv->cmd_dma->offset +
456 (first * SAVAGE_DMA_PAGE_SIZE +
457 dev_priv->dma_pages[first].flushed) * 4;
458 len = (cur - first) * SAVAGE_DMA_PAGE_SIZE +
459 dev_priv->dma_pages[cur].used - dev_priv->dma_pages[first].flushed;
460
461 DRM_DEBUG("phys_addr=%lx, len=%u\n",
462 phys_addr | dev_priv->dma_type, len);
463
464 BEGIN_BCI(3);
465 BCI_SET_REGISTERS(SAVAGE_DMABUFADDR, 1);
466 BCI_WRITE(phys_addr | dev_priv->dma_type);
467 BCI_DMA(len);
468
469 /* fix alignment of the start of the next block */
470 dev_priv->dma_pages[cur].used += align;
471
472 /* age DMA pages */
473 event = savage_bci_emit_event(dev_priv, 0);
474 wrap = dev_priv->event_wrap;
475 for (i = first; i < cur; ++i) {
476 SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
477 dev_priv->dma_pages[i].used = 0;
478 dev_priv->dma_pages[i].flushed = 0;
479 }
480 /* age the current page only when it's full */
481 if (dev_priv->dma_pages[cur].used == SAVAGE_DMA_PAGE_SIZE) {
482 SET_AGE(&dev_priv->dma_pages[cur].age, event, wrap);
483 dev_priv->dma_pages[cur].used = 0;
484 dev_priv->dma_pages[cur].flushed = 0;
485 /* advance to next page */
486 cur++;
487 if (cur == dev_priv->nr_dma_pages)
488 cur = 0;
489 dev_priv->first_dma_page = dev_priv->current_dma_page = cur;
490 } else {
491 dev_priv->first_dma_page = cur;
492 dev_priv->dma_pages[cur].flushed = dev_priv->dma_pages[i].used;
493 }
494 SET_AGE(&dev_priv->last_dma_age, event, wrap);
495
496 DRM_DEBUG("first=cur=%u, cur->used=%u, cur->flushed=%u\n", cur,
497 dev_priv->dma_pages[cur].used,
498 dev_priv->dma_pages[cur].flushed);
499}
500
501static void savage_fake_dma_flush(drm_savage_private_t * dev_priv)
502{
503 unsigned int i, j;
504 BCI_LOCALS;
505
506 if (dev_priv->first_dma_page == dev_priv->current_dma_page &&
507 dev_priv->dma_pages[dev_priv->current_dma_page].used == 0)
508 return;
509
510 DRM_DEBUG("first=%u, cur=%u, cur->used=%u\n",
511 dev_priv->first_dma_page, dev_priv->current_dma_page,
512 dev_priv->dma_pages[dev_priv->current_dma_page].used);
513
514 for (i = dev_priv->first_dma_page;
515 i <= dev_priv->current_dma_page && dev_priv->dma_pages[i].used;
516 ++i) {
517 uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
518 i * SAVAGE_DMA_PAGE_SIZE;
519#if SAVAGE_DMA_DEBUG
520 /* Sanity check: all pages except the last one must be full. */
521 if (i < dev_priv->current_dma_page &&
522 dev_priv->dma_pages[i].used != SAVAGE_DMA_PAGE_SIZE) {
523 DRM_ERROR("partial DMA page %u: used=%u",
524 i, dev_priv->dma_pages[i].used);
525 }
526#endif
527 BEGIN_BCI(dev_priv->dma_pages[i].used);
528 for (j = 0; j < dev_priv->dma_pages[i].used; ++j) {
529 BCI_WRITE(dma_ptr[j]);
530 }
531 dev_priv->dma_pages[i].used = 0;
532 }
533
534 /* reset to first page */
535 dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
536}
537
538int savage_driver_load(struct drm_device *dev, unsigned long chipset)
539{
540 drm_savage_private_t *dev_priv;
541
542 dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
543 if (dev_priv == NULL)
544 return -ENOMEM;
545
546 memset(dev_priv, 0, sizeof(drm_savage_private_t));
547 dev->dev_private = (void *)dev_priv;
548
549 dev_priv->chipset = (enum savage_family)chipset;
550
551 return 0;
552}
553
554
555/*
556 * Initalize mappings. On Savage4 and SavageIX the alignment
557 * and size of the aperture is not suitable for automatic MTRR setup
558 * in drm_addmap. Therefore we add them manually before the maps are
559 * initialized, and tear them down on last close.
560 */
561int savage_driver_firstopen(struct drm_device *dev)
562{
563 drm_savage_private_t *dev_priv = dev->dev_private;
564 unsigned long mmio_base, fb_base, fb_size, aperture_base;
565 /* fb_rsrc and aper_rsrc aren't really used currently, but still exist
566 * in case we decide we need information on the BAR for BSD in the
567 * future.
568 */
569 unsigned int fb_rsrc, aper_rsrc;
570 int ret = 0;
571
572 dev_priv->mtrr[0].handle = -1;
573 dev_priv->mtrr[1].handle = -1;
574 dev_priv->mtrr[2].handle = -1;
575 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
576 fb_rsrc = 0;
577 fb_base = drm_get_resource_start(dev, 0);
578 fb_size = SAVAGE_FB_SIZE_S3;
579 mmio_base = fb_base + SAVAGE_FB_SIZE_S3;
580 aper_rsrc = 0;
581 aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
582 /* this should always be true */
583 if (drm_get_resource_len(dev, 0) == 0x08000000) {
584 /* Don't make MMIO write-cobining! We need 3
585 * MTRRs. */
586 dev_priv->mtrr[0].base = fb_base;
587 dev_priv->mtrr[0].size = 0x01000000;
588 dev_priv->mtrr[0].handle =
589 drm_mtrr_add(dev_priv->mtrr[0].base,
590 dev_priv->mtrr[0].size, DRM_MTRR_WC);
591 dev_priv->mtrr[1].base = fb_base + 0x02000000;
592 dev_priv->mtrr[1].size = 0x02000000;
593 dev_priv->mtrr[1].handle =
594 drm_mtrr_add(dev_priv->mtrr[1].base,
595 dev_priv->mtrr[1].size, DRM_MTRR_WC);
596 dev_priv->mtrr[2].base = fb_base + 0x04000000;
597 dev_priv->mtrr[2].size = 0x04000000;
598 dev_priv->mtrr[2].handle =
599 drm_mtrr_add(dev_priv->mtrr[2].base,
600 dev_priv->mtrr[2].size, DRM_MTRR_WC);
601 } else {
602 DRM_ERROR("strange pci_resource_len %08lx\n",
603 drm_get_resource_len(dev, 0));
604 }
605 } else if (dev_priv->chipset != S3_SUPERSAVAGE &&
606 dev_priv->chipset != S3_SAVAGE2000) {
607 mmio_base = drm_get_resource_start(dev, 0);
608 fb_rsrc = 1;
609 fb_base = drm_get_resource_start(dev, 1);
610 fb_size = SAVAGE_FB_SIZE_S4;
611 aper_rsrc = 1;
612 aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
613 /* this should always be true */
614 if (drm_get_resource_len(dev, 1) == 0x08000000) {
615 /* Can use one MTRR to cover both fb and
616 * aperture. */
617 dev_priv->mtrr[0].base = fb_base;
618 dev_priv->mtrr[0].size = 0x08000000;
619 dev_priv->mtrr[0].handle =
620 drm_mtrr_add(dev_priv->mtrr[0].base,
621 dev_priv->mtrr[0].size, DRM_MTRR_WC);
622 } else {
623 DRM_ERROR("strange pci_resource_len %08lx\n",
624 drm_get_resource_len(dev, 1));
625 }
626 } else {
627 mmio_base = drm_get_resource_start(dev, 0);
628 fb_rsrc = 1;
629 fb_base = drm_get_resource_start(dev, 1);
630 fb_size = drm_get_resource_len(dev, 1);
631 aper_rsrc = 2;
632 aperture_base = drm_get_resource_start(dev, 2);
633 /* Automatic MTRR setup will do the right thing. */
634 }
635
636 ret = drm_addmap(dev, mmio_base, SAVAGE_MMIO_SIZE, _DRM_REGISTERS,
637 _DRM_READ_ONLY, &dev_priv->mmio);
638 if (ret)
639 return ret;
640
641 ret = drm_addmap(dev, fb_base, fb_size, _DRM_FRAME_BUFFER,
642 _DRM_WRITE_COMBINING, &dev_priv->fb);
643 if (ret)
644 return ret;
645
646 ret = drm_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE,
647 _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
648 &dev_priv->aperture);
649 if (ret)
650 return ret;
651
652 return ret;
653}
654
655/*
656 * Delete MTRRs and free device-private data.
657 */
658void savage_driver_lastclose(struct drm_device *dev)
659{
660 drm_savage_private_t *dev_priv = dev->dev_private;
661 int i;
662
663 for (i = 0; i < 3; ++i)
664 if (dev_priv->mtrr[i].handle >= 0)
665 drm_mtrr_del(dev_priv->mtrr[i].handle,
666 dev_priv->mtrr[i].base,
667 dev_priv->mtrr[i].size, DRM_MTRR_WC);
668}
669
670int savage_driver_unload(struct drm_device *dev)
671{
672 drm_savage_private_t *dev_priv = dev->dev_private;
673
674 drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
675
676 return 0;
677}
678
679static int savage_do_init_bci(struct drm_device * dev, drm_savage_init_t * init)
680{
681 drm_savage_private_t *dev_priv = dev->dev_private;
682
683 if (init->fb_bpp != 16 && init->fb_bpp != 32) {
684 DRM_ERROR("invalid frame buffer bpp %d!\n", init->fb_bpp);
685 return -EINVAL;
686 }
687 if (init->depth_bpp != 16 && init->depth_bpp != 32) {
688 DRM_ERROR("invalid depth buffer bpp %d!\n", init->fb_bpp);
689 return -EINVAL;
690 }
691 if (init->dma_type != SAVAGE_DMA_AGP &&
692 init->dma_type != SAVAGE_DMA_PCI) {
693 DRM_ERROR("invalid dma memory type %d!\n", init->dma_type);
694 return -EINVAL;
695 }
696
697 dev_priv->cob_size = init->cob_size;
698 dev_priv->bci_threshold_lo = init->bci_threshold_lo;
699 dev_priv->bci_threshold_hi = init->bci_threshold_hi;
700 dev_priv->dma_type = init->dma_type;
701
702 dev_priv->fb_bpp = init->fb_bpp;
703 dev_priv->front_offset = init->front_offset;
704 dev_priv->front_pitch = init->front_pitch;
705 dev_priv->back_offset = init->back_offset;
706 dev_priv->back_pitch = init->back_pitch;
707 dev_priv->depth_bpp = init->depth_bpp;
708 dev_priv->depth_offset = init->depth_offset;
709 dev_priv->depth_pitch = init->depth_pitch;
710
711 dev_priv->texture_offset = init->texture_offset;
712 dev_priv->texture_size = init->texture_size;
713
714 dev_priv->sarea = drm_getsarea(dev);
715 if (!dev_priv->sarea) {
716 DRM_ERROR("could not find sarea!\n");
717 savage_do_cleanup_bci(dev);
718 return -EINVAL;
719 }
720 if (init->status_offset != 0) {
721 dev_priv->status = drm_core_findmap(dev, init->status_offset);
722 if (!dev_priv->status) {
723 DRM_ERROR("could not find shadow status region!\n");
724 savage_do_cleanup_bci(dev);
725 return -EINVAL;
726 }
727 } else {
728 dev_priv->status = NULL;
729 }
730 if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) {
731 dev->agp_buffer_token = init->buffers_offset;
732 dev->agp_buffer_map = drm_core_findmap(dev,
733 init->buffers_offset);
734 if (!dev->agp_buffer_map) {
735 DRM_ERROR("could not find DMA buffer region!\n");
736 savage_do_cleanup_bci(dev);
737 return -EINVAL;
738 }
739 drm_core_ioremap(dev->agp_buffer_map, dev);
740 if (!dev->agp_buffer_map) {
741 DRM_ERROR("failed to ioremap DMA buffer region!\n");
742 savage_do_cleanup_bci(dev);
743 return -ENOMEM;
744 }
745 }
746 if (init->agp_textures_offset) {
747 dev_priv->agp_textures =
748 drm_core_findmap(dev, init->agp_textures_offset);
749 if (!dev_priv->agp_textures) {
750 DRM_ERROR("could not find agp texture region!\n");
751 savage_do_cleanup_bci(dev);
752 return -EINVAL;
753 }
754 } else {
755 dev_priv->agp_textures = NULL;
756 }
757
758 if (init->cmd_dma_offset) {
759 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
760 DRM_ERROR("command DMA not supported on "
761 "Savage3D/MX/IX.\n");
762 savage_do_cleanup_bci(dev);
763 return -EINVAL;
764 }
765 if (dev->dma && dev->dma->buflist) {
766 DRM_ERROR("command and vertex DMA not supported "
767 "at the same time.\n");
768 savage_do_cleanup_bci(dev);
769 return -EINVAL;
770 }
771 dev_priv->cmd_dma = drm_core_findmap(dev, init->cmd_dma_offset);
772 if (!dev_priv->cmd_dma) {
773 DRM_ERROR("could not find command DMA region!\n");
774 savage_do_cleanup_bci(dev);
775 return -EINVAL;
776 }
777 if (dev_priv->dma_type == SAVAGE_DMA_AGP) {
778 if (dev_priv->cmd_dma->type != _DRM_AGP) {
779 DRM_ERROR("AGP command DMA region is not a "
780 "_DRM_AGP map!\n");
781 savage_do_cleanup_bci(dev);
782 return -EINVAL;
783 }
784 drm_core_ioremap(dev_priv->cmd_dma, dev);
785 if (!dev_priv->cmd_dma->handle) {
786 DRM_ERROR("failed to ioremap command "
787 "DMA region!\n");
788 savage_do_cleanup_bci(dev);
789 return -ENOMEM;
790 }
791 } else if (dev_priv->cmd_dma->type != _DRM_CONSISTENT) {
792 DRM_ERROR("PCI command DMA region is not a "
793 "_DRM_CONSISTENT map!\n");
794 savage_do_cleanup_bci(dev);
795 return -EINVAL;
796 }
797 } else {
798 dev_priv->cmd_dma = NULL;
799 }
800
801 dev_priv->dma_flush = savage_dma_flush;
802 if (!dev_priv->cmd_dma) {
803 DRM_DEBUG("falling back to faked command DMA.\n");
804 dev_priv->fake_dma.offset = 0;
805 dev_priv->fake_dma.size = SAVAGE_FAKE_DMA_SIZE;
806 dev_priv->fake_dma.type = _DRM_SHM;
807 dev_priv->fake_dma.handle = drm_alloc(SAVAGE_FAKE_DMA_SIZE,
808 DRM_MEM_DRIVER);
809 if (!dev_priv->fake_dma.handle) {
810 DRM_ERROR("could not allocate faked DMA buffer!\n");
811 savage_do_cleanup_bci(dev);
812 return -ENOMEM;
813 }
814 dev_priv->cmd_dma = &dev_priv->fake_dma;
815 dev_priv->dma_flush = savage_fake_dma_flush;
816 }
817
818 dev_priv->sarea_priv =
819 (drm_savage_sarea_t *) ((uint8_t *) dev_priv->sarea->handle +
820 init->sarea_priv_offset);
821
822 /* setup bitmap descriptors */
823 {
824 unsigned int color_tile_format;
825 unsigned int depth_tile_format;
826 unsigned int front_stride, back_stride, depth_stride;
827 if (dev_priv->chipset <= S3_SAVAGE4) {
828 color_tile_format = dev_priv->fb_bpp == 16 ?
829 SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
830 depth_tile_format = dev_priv->depth_bpp == 16 ?
831 SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
832 } else {
833 color_tile_format = SAVAGE_BD_TILE_DEST;
834 depth_tile_format = SAVAGE_BD_TILE_DEST;
835 }
836 front_stride = dev_priv->front_pitch / (dev_priv->fb_bpp / 8);
837 back_stride = dev_priv->back_pitch / (dev_priv->fb_bpp / 8);
838 depth_stride =
839 dev_priv->depth_pitch / (dev_priv->depth_bpp / 8);
840
841 dev_priv->front_bd = front_stride | SAVAGE_BD_BW_DISABLE |
842 (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
843 (color_tile_format << SAVAGE_BD_TILE_SHIFT);
844
845 dev_priv->back_bd = back_stride | SAVAGE_BD_BW_DISABLE |
846 (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
847 (color_tile_format << SAVAGE_BD_TILE_SHIFT);
848
849 dev_priv->depth_bd = depth_stride | SAVAGE_BD_BW_DISABLE |
850 (dev_priv->depth_bpp << SAVAGE_BD_BPP_SHIFT) |
851 (depth_tile_format << SAVAGE_BD_TILE_SHIFT);
852 }
853
854 /* setup status and bci ptr */
855 dev_priv->event_counter = 0;
856 dev_priv->event_wrap = 0;
857 dev_priv->bci_ptr = (volatile uint32_t *)
858 ((uint8_t *) dev_priv->mmio->handle + SAVAGE_BCI_OFFSET);
859 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
860 dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S3D;
861 } else {
862 dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S4;
863 }
864 if (dev_priv->status != NULL) {
865 dev_priv->status_ptr =
866 (volatile uint32_t *)dev_priv->status->handle;
867 dev_priv->wait_fifo = savage_bci_wait_fifo_shadow;
868 dev_priv->wait_evnt = savage_bci_wait_event_shadow;
869 dev_priv->status_ptr[1023] = dev_priv->event_counter;
870 } else {
871 dev_priv->status_ptr = NULL;
872 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
873 dev_priv->wait_fifo = savage_bci_wait_fifo_s3d;
874 } else {
875 dev_priv->wait_fifo = savage_bci_wait_fifo_s4;
876 }
877 dev_priv->wait_evnt = savage_bci_wait_event_reg;
878 }
879
880 /* cliprect functions */
881 if (S3_SAVAGE3D_SERIES(dev_priv->chipset))
882 dev_priv->emit_clip_rect = savage_emit_clip_rect_s3d;
883 else
884 dev_priv->emit_clip_rect = savage_emit_clip_rect_s4;
885
886 if (savage_freelist_init(dev) < 0) {
887 DRM_ERROR("could not initialize freelist\n");
888 savage_do_cleanup_bci(dev);
889 return -ENOMEM;
890 }
891
892 if (savage_dma_init(dev_priv) < 0) {
893 DRM_ERROR("could not initialize command DMA\n");
894 savage_do_cleanup_bci(dev);
895 return -ENOMEM;
896 }
897
898 return 0;
899}
900
901static int savage_do_cleanup_bci(struct drm_device * dev)
902{
903 drm_savage_private_t *dev_priv = dev->dev_private;
904
905 if (dev_priv->cmd_dma == &dev_priv->fake_dma) {
906 if (dev_priv->fake_dma.handle)
907 drm_free(dev_priv->fake_dma.handle,
908 SAVAGE_FAKE_DMA_SIZE, DRM_MEM_DRIVER);
909 } else if (dev_priv->cmd_dma && dev_priv->cmd_dma->handle &&
910 dev_priv->cmd_dma->type == _DRM_AGP &&
911 dev_priv->dma_type == SAVAGE_DMA_AGP)
912 drm_core_ioremapfree(dev_priv->cmd_dma, dev);
913
914 if (dev_priv->dma_type == SAVAGE_DMA_AGP &&
915 dev->agp_buffer_map && dev->agp_buffer_map->handle) {
916 drm_core_ioremapfree(dev->agp_buffer_map, dev);
917 /* make sure the next instance (which may be running
918 * in PCI mode) doesn't try to use an old
919 * agp_buffer_map. */
920 dev->agp_buffer_map = NULL;
921 }
922
923 if (dev_priv->dma_pages)
924 drm_free(dev_priv->dma_pages,
925 sizeof(drm_savage_dma_page_t) * dev_priv->nr_dma_pages,
926 DRM_MEM_DRIVER);
927
928 return 0;
929}
930
931static int savage_bci_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
932{
933 drm_savage_init_t *init = data;
934
935 LOCK_TEST_WITH_RETURN(dev, file_priv);
936
937 switch (init->func) {
938 case SAVAGE_INIT_BCI:
939 return savage_do_init_bci(dev, init);
940 case SAVAGE_CLEANUP_BCI:
941 return savage_do_cleanup_bci(dev);
942 }
943
944 return -EINVAL;
945}
946
947static int savage_bci_event_emit(struct drm_device *dev, void *data, struct drm_file *file_priv)
948{
949 drm_savage_private_t *dev_priv = dev->dev_private;
950 drm_savage_event_emit_t *event = data;
951
952 DRM_DEBUG("\n");
953
954 LOCK_TEST_WITH_RETURN(dev, file_priv);
955
956 event->count = savage_bci_emit_event(dev_priv, event->flags);
957 event->count |= dev_priv->event_wrap << 16;
958
959 return 0;
960}
961
962static int savage_bci_event_wait(struct drm_device *dev, void *data, struct drm_file *file_priv)
963{
964 drm_savage_private_t *dev_priv = dev->dev_private;
965 drm_savage_event_wait_t *event = data;
966 unsigned int event_e, hw_e;
967 unsigned int event_w, hw_w;
968
969 DRM_DEBUG("\n");
970
971 UPDATE_EVENT_COUNTER();
972 if (dev_priv->status_ptr)
973 hw_e = dev_priv->status_ptr[1] & 0xffff;
974 else
975 hw_e = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
976 hw_w = dev_priv->event_wrap;
977 if (hw_e > dev_priv->event_counter)
978 hw_w--; /* hardware hasn't passed the last wrap yet */
979
980 event_e = event->count & 0xffff;
981 event_w = event->count >> 16;
982
983 /* Don't need to wait if
984 * - event counter wrapped since the event was emitted or
985 * - the hardware has advanced up to or over the event to wait for.
986 */
987 if (event_w < hw_w || (event_w == hw_w && event_e <= hw_e))
988 return 0;
989 else
990 return dev_priv->wait_evnt(dev_priv, event_e);
991}
992
993/*
994 * DMA buffer management
995 */
996
997static int savage_bci_get_buffers(struct drm_device *dev,
998 struct drm_file *file_priv,
999 struct drm_dma *d)
1000{
1001 struct drm_buf *buf;
1002 int i;
1003
1004 for (i = d->granted_count; i < d->request_count; i++) {
1005 buf = savage_freelist_get(dev);
1006 if (!buf)
1007 return -EAGAIN;
1008
1009 buf->file_priv = file_priv;
1010
1011 if (DRM_COPY_TO_USER(&d->request_indices[i],
1012 &buf->idx, sizeof(buf->idx)))
1013 return -EFAULT;
1014 if (DRM_COPY_TO_USER(&d->request_sizes[i],
1015 &buf->total, sizeof(buf->total)))
1016 return -EFAULT;
1017
1018 d->granted_count++;
1019 }
1020 return 0;
1021}
1022
1023int savage_bci_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv)
1024{
1025 struct drm_device_dma *dma = dev->dma;
1026 struct drm_dma *d = data;
1027 int ret = 0;
1028
1029 LOCK_TEST_WITH_RETURN(dev, file_priv);
1030
1031 /* Please don't send us buffers.
1032 */
1033 if (d->send_count != 0) {
1034 DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
1035 DRM_CURRENTPID, d->send_count);
1036 return -EINVAL;
1037 }
1038
1039 /* We'll send you buffers.
1040 */
1041 if (d->request_count < 0 || d->request_count > dma->buf_count) {
1042 DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
1043 DRM_CURRENTPID, d->request_count, dma->buf_count);
1044 return -EINVAL;
1045 }
1046
1047 d->granted_count = 0;
1048
1049 if (d->request_count) {
1050 ret = savage_bci_get_buffers(dev, file_priv, d);
1051 }
1052
1053 return ret;
1054}
1055
1056void savage_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv)
1057{
1058 struct drm_device_dma *dma = dev->dma;
1059 drm_savage_private_t *dev_priv = dev->dev_private;
1060 int i;
1061
1062 if (!dma)
1063 return;
1064 if (!dev_priv)
1065 return;
1066 if (!dma->buflist)
1067 return;
1068
1069 /*i830_flush_queue(dev); */
1070
1071 for (i = 0; i < dma->buf_count; i++) {
1072 struct drm_buf *buf = dma->buflist[i];
1073 drm_savage_buf_priv_t *buf_priv = buf->dev_private;
1074
1075 if (buf->file_priv == file_priv && buf_priv &&
1076 buf_priv->next == NULL && buf_priv->prev == NULL) {
1077 uint16_t event;
1078 DRM_DEBUG("reclaimed from client\n");
1079 event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
1080 SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
1081 savage_freelist_put(dev, buf);
1082 }
1083 }
1084
1085 drm_core_reclaim_buffers(dev, file_priv);
1086}
1087
1088struct drm_ioctl_desc savage_ioctls[] = {
1089 DRM_IOCTL_DEF(DRM_SAVAGE_BCI_INIT, savage_bci_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1090 DRM_IOCTL_DEF(DRM_SAVAGE_BCI_CMDBUF, savage_bci_cmdbuf, DRM_AUTH),
1091 DRM_IOCTL_DEF(DRM_SAVAGE_BCI_EVENT_EMIT, savage_bci_event_emit, DRM_AUTH),
1092 DRM_IOCTL_DEF(DRM_SAVAGE_BCI_EVENT_WAIT, savage_bci_event_wait, DRM_AUTH),
1093};
1094
1095int savage_max_ioctl = DRM_ARRAY_SIZE(savage_ioctls);
diff --git a/drivers/gpu/drm/savage/savage_drv.c b/drivers/gpu/drm/savage/savage_drv.c
new file mode 100644
index 000000000000..eee52aa92a7c
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_drv.c
@@ -0,0 +1,88 @@
1/* savage_drv.c -- Savage driver for Linux
2 *
3 * Copyright 2004 Felix Kuehling
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sub license,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
22 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26#include "drmP.h"
27#include "savage_drm.h"
28#include "savage_drv.h"
29
30#include "drm_pciids.h"
31
32static struct pci_device_id pciidlist[] = {
33 savage_PCI_IDS
34};
35
36static struct drm_driver driver = {
37 .driver_features =
38 DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_DMA | DRIVER_PCI_DMA,
39 .dev_priv_size = sizeof(drm_savage_buf_priv_t),
40 .load = savage_driver_load,
41 .firstopen = savage_driver_firstopen,
42 .lastclose = savage_driver_lastclose,
43 .unload = savage_driver_unload,
44 .reclaim_buffers = savage_reclaim_buffers,
45 .get_map_ofs = drm_core_get_map_ofs,
46 .get_reg_ofs = drm_core_get_reg_ofs,
47 .ioctls = savage_ioctls,
48 .dma_ioctl = savage_bci_buffers,
49 .fops = {
50 .owner = THIS_MODULE,
51 .open = drm_open,
52 .release = drm_release,
53 .ioctl = drm_ioctl,
54 .mmap = drm_mmap,
55 .poll = drm_poll,
56 .fasync = drm_fasync,
57 },
58
59 .pci_driver = {
60 .name = DRIVER_NAME,
61 .id_table = pciidlist,
62 },
63
64 .name = DRIVER_NAME,
65 .desc = DRIVER_DESC,
66 .date = DRIVER_DATE,
67 .major = DRIVER_MAJOR,
68 .minor = DRIVER_MINOR,
69 .patchlevel = DRIVER_PATCHLEVEL,
70};
71
72static int __init savage_init(void)
73{
74 driver.num_ioctls = savage_max_ioctl;
75 return drm_init(&driver);
76}
77
78static void __exit savage_exit(void)
79{
80 drm_exit(&driver);
81}
82
83module_init(savage_init);
84module_exit(savage_exit);
85
86MODULE_AUTHOR(DRIVER_AUTHOR);
87MODULE_DESCRIPTION(DRIVER_DESC);
88MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/savage/savage_drv.h b/drivers/gpu/drm/savage/savage_drv.h
new file mode 100644
index 000000000000..df2aac6636f7
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_drv.h
@@ -0,0 +1,575 @@
1/* savage_drv.h -- Private header for the savage driver */
2/*
3 * Copyright 2004 Felix Kuehling
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sub license,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
22 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26#ifndef __SAVAGE_DRV_H__
27#define __SAVAGE_DRV_H__
28
29#define DRIVER_AUTHOR "Felix Kuehling"
30
31#define DRIVER_NAME "savage"
32#define DRIVER_DESC "Savage3D/MX/IX, Savage4, SuperSavage, Twister, ProSavage[DDR]"
33#define DRIVER_DATE "20050313"
34
35#define DRIVER_MAJOR 2
36#define DRIVER_MINOR 4
37#define DRIVER_PATCHLEVEL 1
38/* Interface history:
39 *
40 * 1.x The DRM driver from the VIA/S3 code drop, basically a dummy
41 * 2.0 The first real DRM
42 * 2.1 Scissors registers managed by the DRM, 3D operations clipped by
43 * cliprects of the cmdbuf ioctl
44 * 2.2 Implemented SAVAGE_CMD_DMA_IDX and SAVAGE_CMD_VB_IDX
45 * 2.3 Event counters used by BCI_EVENT_EMIT/WAIT ioctls are now 32 bits
46 * wide and thus very long lived (unlikely to ever wrap). The size
47 * in the struct was 32 bits before, but only 16 bits were used
48 * 2.4 Implemented command DMA. Now drm_savage_init_t.cmd_dma_offset is
49 * actually used
50 */
51
52typedef struct drm_savage_age {
53 uint16_t event;
54 unsigned int wrap;
55} drm_savage_age_t;
56
57typedef struct drm_savage_buf_priv {
58 struct drm_savage_buf_priv *next;
59 struct drm_savage_buf_priv *prev;
60 drm_savage_age_t age;
61 struct drm_buf *buf;
62} drm_savage_buf_priv_t;
63
64typedef struct drm_savage_dma_page {
65 drm_savage_age_t age;
66 unsigned int used, flushed;
67} drm_savage_dma_page_t;
68#define SAVAGE_DMA_PAGE_SIZE 1024 /* in dwords */
69/* Fake DMA buffer size in bytes. 4 pages. Allows a maximum command
70 * size of 16kbytes or 4k entries. Minimum requirement would be
71 * 10kbytes for 255 40-byte vertices in one drawing command. */
72#define SAVAGE_FAKE_DMA_SIZE (SAVAGE_DMA_PAGE_SIZE*4*4)
73
74/* interesting bits of hardware state that are saved in dev_priv */
75typedef union {
76 struct drm_savage_common_state {
77 uint32_t vbaddr;
78 } common;
79 struct {
80 unsigned char pad[sizeof(struct drm_savage_common_state)];
81 uint32_t texctrl, texaddr;
82 uint32_t scstart, new_scstart;
83 uint32_t scend, new_scend;
84 } s3d;
85 struct {
86 unsigned char pad[sizeof(struct drm_savage_common_state)];
87 uint32_t texdescr, texaddr0, texaddr1;
88 uint32_t drawctrl0, new_drawctrl0;
89 uint32_t drawctrl1, new_drawctrl1;
90 } s4;
91} drm_savage_state_t;
92
93/* these chip tags should match the ones in the 2D driver in savage_regs.h. */
94enum savage_family {
95 S3_UNKNOWN = 0,
96 S3_SAVAGE3D,
97 S3_SAVAGE_MX,
98 S3_SAVAGE4,
99 S3_PROSAVAGE,
100 S3_TWISTER,
101 S3_PROSAVAGEDDR,
102 S3_SUPERSAVAGE,
103 S3_SAVAGE2000,
104 S3_LAST
105};
106
107extern struct drm_ioctl_desc savage_ioctls[];
108extern int savage_max_ioctl;
109
110#define S3_SAVAGE3D_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX))
111
112#define S3_SAVAGE4_SERIES(chip) ((chip==S3_SAVAGE4) \
113 || (chip==S3_PROSAVAGE) \
114 || (chip==S3_TWISTER) \
115 || (chip==S3_PROSAVAGEDDR))
116
117#define S3_SAVAGE_MOBILE_SERIES(chip) ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE))
118
119#define S3_SAVAGE_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE2000))
120
121#define S3_MOBILE_TWISTER_SERIES(chip) ((chip==S3_TWISTER) \
122 ||(chip==S3_PROSAVAGEDDR))
123
124/* flags */
125#define SAVAGE_IS_AGP 1
126
127typedef struct drm_savage_private {
128 drm_savage_sarea_t *sarea_priv;
129
130 drm_savage_buf_priv_t head, tail;
131
132 /* who am I? */
133 enum savage_family chipset;
134
135 unsigned int cob_size;
136 unsigned int bci_threshold_lo, bci_threshold_hi;
137 unsigned int dma_type;
138
139 /* frame buffer layout */
140 unsigned int fb_bpp;
141 unsigned int front_offset, front_pitch;
142 unsigned int back_offset, back_pitch;
143 unsigned int depth_bpp;
144 unsigned int depth_offset, depth_pitch;
145
146 /* bitmap descriptors for swap and clear */
147 unsigned int front_bd, back_bd, depth_bd;
148
149 /* local textures */
150 unsigned int texture_offset;
151 unsigned int texture_size;
152
153 /* memory regions in physical memory */
154 drm_local_map_t *sarea;
155 drm_local_map_t *mmio;
156 drm_local_map_t *fb;
157 drm_local_map_t *aperture;
158 drm_local_map_t *status;
159 drm_local_map_t *agp_textures;
160 drm_local_map_t *cmd_dma;
161 drm_local_map_t fake_dma;
162
163 struct {
164 int handle;
165 unsigned long base, size;
166 } mtrr[3];
167
168 /* BCI and status-related stuff */
169 volatile uint32_t *status_ptr, *bci_ptr;
170 uint32_t status_used_mask;
171 uint16_t event_counter;
172 unsigned int event_wrap;
173
174 /* Savage4 command DMA */
175 drm_savage_dma_page_t *dma_pages;
176 unsigned int nr_dma_pages, first_dma_page, current_dma_page;
177 drm_savage_age_t last_dma_age;
178
179 /* saved hw state for global/local check on S3D */
180 uint32_t hw_draw_ctrl, hw_zbuf_ctrl;
181 /* and for scissors (global, so don't emit if not changed) */
182 uint32_t hw_scissors_start, hw_scissors_end;
183
184 drm_savage_state_t state;
185
186 /* after emitting a wait cmd Savage3D needs 63 nops before next DMA */
187 unsigned int waiting;
188
189 /* config/hardware-dependent function pointers */
190 int (*wait_fifo) (struct drm_savage_private * dev_priv, unsigned int n);
191 int (*wait_evnt) (struct drm_savage_private * dev_priv, uint16_t e);
192 /* Err, there is a macro wait_event in include/linux/wait.h.
193 * Avoid unwanted macro expansion. */
194 void (*emit_clip_rect) (struct drm_savage_private * dev_priv,
195 const struct drm_clip_rect * pbox);
196 void (*dma_flush) (struct drm_savage_private * dev_priv);
197} drm_savage_private_t;
198
199/* ioctls */
200extern int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv);
201extern int savage_bci_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv);
202
203/* BCI functions */
204extern uint16_t savage_bci_emit_event(drm_savage_private_t * dev_priv,
205 unsigned int flags);
206extern void savage_freelist_put(struct drm_device * dev, struct drm_buf * buf);
207extern void savage_dma_reset(drm_savage_private_t * dev_priv);
208extern void savage_dma_wait(drm_savage_private_t * dev_priv, unsigned int page);
209extern uint32_t *savage_dma_alloc(drm_savage_private_t * dev_priv,
210 unsigned int n);
211extern int savage_driver_load(struct drm_device *dev, unsigned long chipset);
212extern int savage_driver_firstopen(struct drm_device *dev);
213extern void savage_driver_lastclose(struct drm_device *dev);
214extern int savage_driver_unload(struct drm_device *dev);
215extern void savage_reclaim_buffers(struct drm_device *dev,
216 struct drm_file *file_priv);
217
218/* state functions */
219extern void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
220 const struct drm_clip_rect * pbox);
221extern void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
222 const struct drm_clip_rect * pbox);
223
224#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */
225#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */
226#define SAVAGE_MMIO_SIZE 0x00080000 /* 512kB */
227#define SAVAGE_APERTURE_OFFSET 0x02000000 /* 32MB */
228#define SAVAGE_APERTURE_SIZE 0x05000000 /* 5 tiled surfaces, 16MB each */
229
230#define SAVAGE_BCI_OFFSET 0x00010000 /* offset of the BCI region
231 * inside the MMIO region */
232#define SAVAGE_BCI_FIFO_SIZE 32 /* number of entries in on-chip
233 * BCI FIFO */
234
235/*
236 * MMIO registers
237 */
238#define SAVAGE_STATUS_WORD0 0x48C00
239#define SAVAGE_STATUS_WORD1 0x48C04
240#define SAVAGE_ALT_STATUS_WORD0 0x48C60
241
242#define SAVAGE_FIFO_USED_MASK_S3D 0x0001ffff
243#define SAVAGE_FIFO_USED_MASK_S4 0x001fffff
244
245/* Copied from savage_bci.h in the 2D driver with some renaming. */
246
247/* Bitmap descriptors */
248#define SAVAGE_BD_STRIDE_SHIFT 0
249#define SAVAGE_BD_BPP_SHIFT 16
250#define SAVAGE_BD_TILE_SHIFT 24
251#define SAVAGE_BD_BW_DISABLE (1<<28)
252/* common: */
253#define SAVAGE_BD_TILE_LINEAR 0
254/* savage4, MX, IX, 3D */
255#define SAVAGE_BD_TILE_16BPP 2
256#define SAVAGE_BD_TILE_32BPP 3
257/* twister, prosavage, DDR, supersavage, 2000 */
258#define SAVAGE_BD_TILE_DEST 1
259#define SAVAGE_BD_TILE_TEXTURE 2
260/* GBD - BCI enable */
261/* savage4, MX, IX, 3D */
262#define SAVAGE_GBD_BCI_ENABLE 8
263/* twister, prosavage, DDR, supersavage, 2000 */
264#define SAVAGE_GBD_BCI_ENABLE_TWISTER 0
265
266#define SAVAGE_GBD_BIG_ENDIAN 4
267#define SAVAGE_GBD_LITTLE_ENDIAN 0
268#define SAVAGE_GBD_64 1
269
270/* Global Bitmap Descriptor */
271#define SAVAGE_BCI_GLB_BD_LOW 0x8168
272#define SAVAGE_BCI_GLB_BD_HIGH 0x816C
273
274/*
275 * BCI registers
276 */
277/* Savage4/Twister/ProSavage 3D registers */
278#define SAVAGE_DRAWLOCALCTRL_S4 0x1e
279#define SAVAGE_TEXPALADDR_S4 0x1f
280#define SAVAGE_TEXCTRL0_S4 0x20
281#define SAVAGE_TEXCTRL1_S4 0x21
282#define SAVAGE_TEXADDR0_S4 0x22
283#define SAVAGE_TEXADDR1_S4 0x23
284#define SAVAGE_TEXBLEND0_S4 0x24
285#define SAVAGE_TEXBLEND1_S4 0x25
286#define SAVAGE_TEXXPRCLR_S4 0x26 /* never used */
287#define SAVAGE_TEXDESCR_S4 0x27
288#define SAVAGE_FOGTABLE_S4 0x28
289#define SAVAGE_FOGCTRL_S4 0x30
290#define SAVAGE_STENCILCTRL_S4 0x31
291#define SAVAGE_ZBUFCTRL_S4 0x32
292#define SAVAGE_ZBUFOFF_S4 0x33
293#define SAVAGE_DESTCTRL_S4 0x34
294#define SAVAGE_DRAWCTRL0_S4 0x35
295#define SAVAGE_DRAWCTRL1_S4 0x36
296#define SAVAGE_ZWATERMARK_S4 0x37
297#define SAVAGE_DESTTEXRWWATERMARK_S4 0x38
298#define SAVAGE_TEXBLENDCOLOR_S4 0x39
299/* Savage3D/MX/IX 3D registers */
300#define SAVAGE_TEXPALADDR_S3D 0x18
301#define SAVAGE_TEXXPRCLR_S3D 0x19 /* never used */
302#define SAVAGE_TEXADDR_S3D 0x1A
303#define SAVAGE_TEXDESCR_S3D 0x1B
304#define SAVAGE_TEXCTRL_S3D 0x1C
305#define SAVAGE_FOGTABLE_S3D 0x20
306#define SAVAGE_FOGCTRL_S3D 0x30
307#define SAVAGE_DRAWCTRL_S3D 0x31
308#define SAVAGE_ZBUFCTRL_S3D 0x32
309#define SAVAGE_ZBUFOFF_S3D 0x33
310#define SAVAGE_DESTCTRL_S3D 0x34
311#define SAVAGE_SCSTART_S3D 0x35
312#define SAVAGE_SCEND_S3D 0x36
313#define SAVAGE_ZWATERMARK_S3D 0x37
314#define SAVAGE_DESTTEXRWWATERMARK_S3D 0x38
315/* common stuff */
316#define SAVAGE_VERTBUFADDR 0x3e
317#define SAVAGE_BITPLANEWTMASK 0xd7
318#define SAVAGE_DMABUFADDR 0x51
319
320/* texture enable bits (needed for tex addr checking) */
321#define SAVAGE_TEXCTRL_TEXEN_MASK 0x00010000 /* S3D */
322#define SAVAGE_TEXDESCR_TEX0EN_MASK 0x02000000 /* S4 */
323#define SAVAGE_TEXDESCR_TEX1EN_MASK 0x04000000 /* S4 */
324
325/* Global fields in Savage4/Twister/ProSavage 3D registers:
326 *
327 * All texture registers and DrawLocalCtrl are local. All other
328 * registers are global. */
329
330/* Global fields in Savage3D/MX/IX 3D registers:
331 *
332 * All texture registers are local. DrawCtrl and ZBufCtrl are
333 * partially local. All other registers are global.
334 *
335 * DrawCtrl global fields: cullMode, alphaTestCmpFunc, alphaTestEn, alphaRefVal
336 * ZBufCtrl global fields: zCmpFunc, zBufEn
337 */
338#define SAVAGE_DRAWCTRL_S3D_GLOBAL 0x03f3c00c
339#define SAVAGE_ZBUFCTRL_S3D_GLOBAL 0x00000027
340
341/* Masks for scissor bits (drawCtrl[01] on s4, scissorStart/End on s3d)
342 */
343#define SAVAGE_SCISSOR_MASK_S4 0x00fff7ff
344#define SAVAGE_SCISSOR_MASK_S3D 0x07ff07ff
345
346/*
347 * BCI commands
348 */
349#define BCI_CMD_NOP 0x40000000
350#define BCI_CMD_RECT 0x48000000
351#define BCI_CMD_RECT_XP 0x01000000
352#define BCI_CMD_RECT_YP 0x02000000
353#define BCI_CMD_SCANLINE 0x50000000
354#define BCI_CMD_LINE 0x5C000000
355#define BCI_CMD_LINE_LAST_PIXEL 0x58000000
356#define BCI_CMD_BYTE_TEXT 0x63000000
357#define BCI_CMD_NT_BYTE_TEXT 0x67000000
358#define BCI_CMD_BIT_TEXT 0x6C000000
359#define BCI_CMD_GET_ROP(cmd) (((cmd) >> 16) & 0xFF)
360#define BCI_CMD_SET_ROP(cmd, rop) ((cmd) |= ((rop & 0xFF) << 16))
361#define BCI_CMD_SEND_COLOR 0x00008000
362
363#define BCI_CMD_CLIP_NONE 0x00000000
364#define BCI_CMD_CLIP_CURRENT 0x00002000
365#define BCI_CMD_CLIP_LR 0x00004000
366#define BCI_CMD_CLIP_NEW 0x00006000
367
368#define BCI_CMD_DEST_GBD 0x00000000
369#define BCI_CMD_DEST_PBD 0x00000800
370#define BCI_CMD_DEST_PBD_NEW 0x00000C00
371#define BCI_CMD_DEST_SBD 0x00001000
372#define BCI_CMD_DEST_SBD_NEW 0x00001400
373
374#define BCI_CMD_SRC_TRANSPARENT 0x00000200
375#define BCI_CMD_SRC_SOLID 0x00000000
376#define BCI_CMD_SRC_GBD 0x00000020
377#define BCI_CMD_SRC_COLOR 0x00000040
378#define BCI_CMD_SRC_MONO 0x00000060
379#define BCI_CMD_SRC_PBD_COLOR 0x00000080
380#define BCI_CMD_SRC_PBD_MONO 0x000000A0
381#define BCI_CMD_SRC_PBD_COLOR_NEW 0x000000C0
382#define BCI_CMD_SRC_PBD_MONO_NEW 0x000000E0
383#define BCI_CMD_SRC_SBD_COLOR 0x00000100
384#define BCI_CMD_SRC_SBD_MONO 0x00000120
385#define BCI_CMD_SRC_SBD_COLOR_NEW 0x00000140
386#define BCI_CMD_SRC_SBD_MONO_NEW 0x00000160
387
388#define BCI_CMD_PAT_TRANSPARENT 0x00000010
389#define BCI_CMD_PAT_NONE 0x00000000
390#define BCI_CMD_PAT_COLOR 0x00000002
391#define BCI_CMD_PAT_MONO 0x00000003
392#define BCI_CMD_PAT_PBD_COLOR 0x00000004
393#define BCI_CMD_PAT_PBD_MONO 0x00000005
394#define BCI_CMD_PAT_PBD_COLOR_NEW 0x00000006
395#define BCI_CMD_PAT_PBD_MONO_NEW 0x00000007
396#define BCI_CMD_PAT_SBD_COLOR 0x00000008
397#define BCI_CMD_PAT_SBD_MONO 0x00000009
398#define BCI_CMD_PAT_SBD_COLOR_NEW 0x0000000A
399#define BCI_CMD_PAT_SBD_MONO_NEW 0x0000000B
400
401#define BCI_BD_BW_DISABLE 0x10000000
402#define BCI_BD_TILE_MASK 0x03000000
403#define BCI_BD_TILE_NONE 0x00000000
404#define BCI_BD_TILE_16 0x02000000
405#define BCI_BD_TILE_32 0x03000000
406#define BCI_BD_GET_BPP(bd) (((bd) >> 16) & 0xFF)
407#define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16))
408#define BCI_BD_GET_STRIDE(bd) ((bd) & 0xFFFF)
409#define BCI_BD_SET_STRIDE(bd, st) ((bd) |= ((st) & 0xFFFF))
410
411#define BCI_CMD_SET_REGISTER 0x96000000
412
413#define BCI_CMD_WAIT 0xC0000000
414#define BCI_CMD_WAIT_3D 0x00010000
415#define BCI_CMD_WAIT_2D 0x00020000
416
417#define BCI_CMD_UPDATE_EVENT_TAG 0x98000000
418
419#define BCI_CMD_DRAW_PRIM 0x80000000
420#define BCI_CMD_DRAW_INDEXED_PRIM 0x88000000
421#define BCI_CMD_DRAW_CONT 0x01000000
422#define BCI_CMD_DRAW_TRILIST 0x00000000
423#define BCI_CMD_DRAW_TRISTRIP 0x02000000
424#define BCI_CMD_DRAW_TRIFAN 0x04000000
425#define BCI_CMD_DRAW_SKIPFLAGS 0x000000ff
426#define BCI_CMD_DRAW_NO_Z 0x00000001
427#define BCI_CMD_DRAW_NO_W 0x00000002
428#define BCI_CMD_DRAW_NO_CD 0x00000004
429#define BCI_CMD_DRAW_NO_CS 0x00000008
430#define BCI_CMD_DRAW_NO_U0 0x00000010
431#define BCI_CMD_DRAW_NO_V0 0x00000020
432#define BCI_CMD_DRAW_NO_UV0 0x00000030
433#define BCI_CMD_DRAW_NO_U1 0x00000040
434#define BCI_CMD_DRAW_NO_V1 0x00000080
435#define BCI_CMD_DRAW_NO_UV1 0x000000c0
436
437#define BCI_CMD_DMA 0xa8000000
438
439#define BCI_W_H(w, h) ((((h) << 16) | (w)) & 0x0FFF0FFF)
440#define BCI_X_Y(x, y) ((((y) << 16) | (x)) & 0x0FFF0FFF)
441#define BCI_X_W(x, y) ((((w) << 16) | (x)) & 0x0FFF0FFF)
442#define BCI_CLIP_LR(l, r) ((((r) << 16) | (l)) & 0x0FFF0FFF)
443#define BCI_CLIP_TL(t, l) ((((t) << 16) | (l)) & 0x0FFF0FFF)
444#define BCI_CLIP_BR(b, r) ((((b) << 16) | (r)) & 0x0FFF0FFF)
445
446#define BCI_LINE_X_Y(x, y) (((y) << 16) | ((x) & 0xFFFF))
447#define BCI_LINE_STEPS(diag, axi) (((axi) << 16) | ((diag) & 0xFFFF))
448#define BCI_LINE_MISC(maj, ym, xp, yp, err) \
449 (((maj) & 0x1FFF) | \
450 ((ym) ? 1<<13 : 0) | \
451 ((xp) ? 1<<14 : 0) | \
452 ((yp) ? 1<<15 : 0) | \
453 ((err) << 16))
454
455/*
456 * common commands
457 */
458#define BCI_SET_REGISTERS( first, n ) \
459 BCI_WRITE(BCI_CMD_SET_REGISTER | \
460 ((uint32_t)(n) & 0xff) << 16 | \
461 ((uint32_t)(first) & 0xffff))
462#define DMA_SET_REGISTERS( first, n ) \
463 DMA_WRITE(BCI_CMD_SET_REGISTER | \
464 ((uint32_t)(n) & 0xff) << 16 | \
465 ((uint32_t)(first) & 0xffff))
466
467#define BCI_DRAW_PRIMITIVE(n, type, skip) \
468 BCI_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \
469 ((n) << 16))
470#define DMA_DRAW_PRIMITIVE(n, type, skip) \
471 DMA_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \
472 ((n) << 16))
473
474#define BCI_DRAW_INDICES_S3D(n, type, i0) \
475 BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \
476 ((n) << 16) | (i0))
477
478#define BCI_DRAW_INDICES_S4(n, type, skip) \
479 BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \
480 (skip) | ((n) << 16))
481
482#define BCI_DMA(n) \
483 BCI_WRITE(BCI_CMD_DMA | (((n) >> 1) - 1))
484
485/*
486 * access to MMIO
487 */
488#define SAVAGE_READ(reg) DRM_READ32( dev_priv->mmio, (reg) )
489#define SAVAGE_WRITE(reg) DRM_WRITE32( dev_priv->mmio, (reg) )
490
491/*
492 * access to the burst command interface (BCI)
493 */
494#define SAVAGE_BCI_DEBUG 1
495
496#define BCI_LOCALS volatile uint32_t *bci_ptr;
497
498#define BEGIN_BCI( n ) do { \
499 dev_priv->wait_fifo(dev_priv, (n)); \
500 bci_ptr = dev_priv->bci_ptr; \
501} while(0)
502
503#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val)
504
505/*
506 * command DMA support
507 */
508#define SAVAGE_DMA_DEBUG 1
509
510#define DMA_LOCALS uint32_t *dma_ptr;
511
512#define BEGIN_DMA( n ) do { \
513 unsigned int cur = dev_priv->current_dma_page; \
514 unsigned int rest = SAVAGE_DMA_PAGE_SIZE - \
515 dev_priv->dma_pages[cur].used; \
516 if ((n) > rest) { \
517 dma_ptr = savage_dma_alloc(dev_priv, (n)); \
518 } else { /* fast path for small allocations */ \
519 dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + \
520 cur * SAVAGE_DMA_PAGE_SIZE + \
521 dev_priv->dma_pages[cur].used; \
522 if (dev_priv->dma_pages[cur].used == 0) \
523 savage_dma_wait(dev_priv, cur); \
524 dev_priv->dma_pages[cur].used += (n); \
525 } \
526} while(0)
527
528#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val)
529
530#define DMA_COPY(src, n) do { \
531 memcpy(dma_ptr, (src), (n)*4); \
532 dma_ptr += n; \
533} while(0)
534
535#if SAVAGE_DMA_DEBUG
536#define DMA_COMMIT() do { \
537 unsigned int cur = dev_priv->current_dma_page; \
538 uint32_t *expected = (uint32_t *)dev_priv->cmd_dma->handle + \
539 cur * SAVAGE_DMA_PAGE_SIZE + \
540 dev_priv->dma_pages[cur].used; \
541 if (dma_ptr != expected) { \
542 DRM_ERROR("DMA allocation and use don't match: " \
543 "%p != %p\n", expected, dma_ptr); \
544 savage_dma_reset(dev_priv); \
545 } \
546} while(0)
547#else
548#define DMA_COMMIT() do {/* nothing */} while(0)
549#endif
550
551#define DMA_FLUSH() dev_priv->dma_flush(dev_priv)
552
553/* Buffer aging via event tag
554 */
555
556#define UPDATE_EVENT_COUNTER( ) do { \
557 if (dev_priv->status_ptr) { \
558 uint16_t count; \
559 /* coordinate with Xserver */ \
560 count = dev_priv->status_ptr[1023]; \
561 if (count < dev_priv->event_counter) \
562 dev_priv->event_wrap++; \
563 dev_priv->event_counter = count; \
564 } \
565} while(0)
566
567#define SET_AGE( age, e, w ) do { \
568 (age)->event = e; \
569 (age)->wrap = w; \
570} while(0)
571
572#define TEST_AGE( age, e, w ) \
573 ( (age)->wrap < (w) || ( (age)->wrap == (w) && (age)->event <= (e) ) )
574
575#endif /* __SAVAGE_DRV_H__ */
diff --git a/drivers/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c
new file mode 100644
index 000000000000..5f6238fdf1fa
--- /dev/null
+++ b/drivers/gpu/drm/savage/savage_state.c
@@ -0,0 +1,1163 @@
1/* savage_state.c -- State and drawing support for Savage
2 *
3 * Copyright 2004 Felix Kuehling
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sub license,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
22 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25#include "drmP.h"
26#include "savage_drm.h"
27#include "savage_drv.h"
28
29void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
30 const struct drm_clip_rect * pbox)
31{
32 uint32_t scstart = dev_priv->state.s3d.new_scstart;
33 uint32_t scend = dev_priv->state.s3d.new_scend;
34 scstart = (scstart & ~SAVAGE_SCISSOR_MASK_S3D) |
35 ((uint32_t) pbox->x1 & 0x000007ff) |
36 (((uint32_t) pbox->y1 << 16) & 0x07ff0000);
37 scend = (scend & ~SAVAGE_SCISSOR_MASK_S3D) |
38 (((uint32_t) pbox->x2 - 1) & 0x000007ff) |
39 ((((uint32_t) pbox->y2 - 1) << 16) & 0x07ff0000);
40 if (scstart != dev_priv->state.s3d.scstart ||
41 scend != dev_priv->state.s3d.scend) {
42 DMA_LOCALS;
43 BEGIN_DMA(4);
44 DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
45 DMA_SET_REGISTERS(SAVAGE_SCSTART_S3D, 2);
46 DMA_WRITE(scstart);
47 DMA_WRITE(scend);
48 dev_priv->state.s3d.scstart = scstart;
49 dev_priv->state.s3d.scend = scend;
50 dev_priv->waiting = 1;
51 DMA_COMMIT();
52 }
53}
54
55void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
56 const struct drm_clip_rect * pbox)
57{
58 uint32_t drawctrl0 = dev_priv->state.s4.new_drawctrl0;
59 uint32_t drawctrl1 = dev_priv->state.s4.new_drawctrl1;
60 drawctrl0 = (drawctrl0 & ~SAVAGE_SCISSOR_MASK_S4) |
61 ((uint32_t) pbox->x1 & 0x000007ff) |
62 (((uint32_t) pbox->y1 << 12) & 0x00fff000);
63 drawctrl1 = (drawctrl1 & ~SAVAGE_SCISSOR_MASK_S4) |
64 (((uint32_t) pbox->x2 - 1) & 0x000007ff) |
65 ((((uint32_t) pbox->y2 - 1) << 12) & 0x00fff000);
66 if (drawctrl0 != dev_priv->state.s4.drawctrl0 ||
67 drawctrl1 != dev_priv->state.s4.drawctrl1) {
68 DMA_LOCALS;
69 BEGIN_DMA(4);
70 DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
71 DMA_SET_REGISTERS(SAVAGE_DRAWCTRL0_S4, 2);
72 DMA_WRITE(drawctrl0);
73 DMA_WRITE(drawctrl1);
74 dev_priv->state.s4.drawctrl0 = drawctrl0;
75 dev_priv->state.s4.drawctrl1 = drawctrl1;
76 dev_priv->waiting = 1;
77 DMA_COMMIT();
78 }
79}
80
81static int savage_verify_texaddr(drm_savage_private_t * dev_priv, int unit,
82 uint32_t addr)
83{
84 if ((addr & 6) != 2) { /* reserved bits */
85 DRM_ERROR("bad texAddr%d %08x (reserved bits)\n", unit, addr);
86 return -EINVAL;
87 }
88 if (!(addr & 1)) { /* local */
89 addr &= ~7;
90 if (addr < dev_priv->texture_offset ||
91 addr >= dev_priv->texture_offset + dev_priv->texture_size) {
92 DRM_ERROR
93 ("bad texAddr%d %08x (local addr out of range)\n",
94 unit, addr);
95 return -EINVAL;
96 }
97 } else { /* AGP */
98 if (!dev_priv->agp_textures) {
99 DRM_ERROR("bad texAddr%d %08x (AGP not available)\n",
100 unit, addr);
101 return -EINVAL;
102 }
103 addr &= ~7;
104 if (addr < dev_priv->agp_textures->offset ||
105 addr >= (dev_priv->agp_textures->offset +
106 dev_priv->agp_textures->size)) {
107 DRM_ERROR
108 ("bad texAddr%d %08x (AGP addr out of range)\n",
109 unit, addr);
110 return -EINVAL;
111 }
112 }
113 return 0;
114}
115
116#define SAVE_STATE(reg,where) \
117 if(start <= reg && start+count > reg) \
118 dev_priv->state.where = regs[reg - start]
119#define SAVE_STATE_MASK(reg,where,mask) do { \
120 if(start <= reg && start+count > reg) { \
121 uint32_t tmp; \
122 tmp = regs[reg - start]; \
123 dev_priv->state.where = (tmp & (mask)) | \
124 (dev_priv->state.where & ~(mask)); \
125 } \
126} while (0)
127
128static int savage_verify_state_s3d(drm_savage_private_t * dev_priv,
129 unsigned int start, unsigned int count,
130 const uint32_t *regs)
131{
132 if (start < SAVAGE_TEXPALADDR_S3D ||
133 start + count - 1 > SAVAGE_DESTTEXRWWATERMARK_S3D) {
134 DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
135 start, start + count - 1);
136 return -EINVAL;
137 }
138
139 SAVE_STATE_MASK(SAVAGE_SCSTART_S3D, s3d.new_scstart,
140 ~SAVAGE_SCISSOR_MASK_S3D);
141 SAVE_STATE_MASK(SAVAGE_SCEND_S3D, s3d.new_scend,
142 ~SAVAGE_SCISSOR_MASK_S3D);
143
144 /* if any texture regs were changed ... */
145 if (start <= SAVAGE_TEXCTRL_S3D &&
146 start + count > SAVAGE_TEXPALADDR_S3D) {
147 /* ... check texture state */
148 SAVE_STATE(SAVAGE_TEXCTRL_S3D, s3d.texctrl);
149 SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr);
150 if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK)
151 return savage_verify_texaddr(dev_priv, 0,
152 dev_priv->state.s3d.texaddr);
153 }
154
155 return 0;
156}
157
158static int savage_verify_state_s4(drm_savage_private_t * dev_priv,
159 unsigned int start, unsigned int count,
160 const uint32_t *regs)
161{
162 int ret = 0;
163
164 if (start < SAVAGE_DRAWLOCALCTRL_S4 ||
165 start + count - 1 > SAVAGE_TEXBLENDCOLOR_S4) {
166 DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
167 start, start + count - 1);
168 return -EINVAL;
169 }
170
171 SAVE_STATE_MASK(SAVAGE_DRAWCTRL0_S4, s4.new_drawctrl0,
172 ~SAVAGE_SCISSOR_MASK_S4);
173 SAVE_STATE_MASK(SAVAGE_DRAWCTRL1_S4, s4.new_drawctrl1,
174 ~SAVAGE_SCISSOR_MASK_S4);
175
176 /* if any texture regs were changed ... */
177 if (start <= SAVAGE_TEXDESCR_S4 &&
178 start + count > SAVAGE_TEXPALADDR_S4) {
179 /* ... check texture state */
180 SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr);
181 SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0);
182 SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1);
183 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK)
184 ret |= savage_verify_texaddr(dev_priv, 0,
185 dev_priv->state.s4.texaddr0);
186 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK)
187 ret |= savage_verify_texaddr(dev_priv, 1,
188 dev_priv->state.s4.texaddr1);
189 }
190
191 return ret;
192}
193
194#undef SAVE_STATE
195#undef SAVE_STATE_MASK
196
197static int savage_dispatch_state(drm_savage_private_t * dev_priv,
198 const drm_savage_cmd_header_t * cmd_header,
199 const uint32_t *regs)
200{
201 unsigned int count = cmd_header->state.count;
202 unsigned int start = cmd_header->state.start;
203 unsigned int count2 = 0;
204 unsigned int bci_size;
205 int ret;
206 DMA_LOCALS;
207
208 if (!count)
209 return 0;
210
211 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
212 ret = savage_verify_state_s3d(dev_priv, start, count, regs);
213 if (ret != 0)
214 return ret;
215 /* scissor regs are emitted in savage_dispatch_draw */
216 if (start < SAVAGE_SCSTART_S3D) {
217 if (start + count > SAVAGE_SCEND_S3D + 1)
218 count2 = count - (SAVAGE_SCEND_S3D + 1 - start);
219 if (start + count > SAVAGE_SCSTART_S3D)
220 count = SAVAGE_SCSTART_S3D - start;
221 } else if (start <= SAVAGE_SCEND_S3D) {
222 if (start + count > SAVAGE_SCEND_S3D + 1) {
223 count -= SAVAGE_SCEND_S3D + 1 - start;
224 start = SAVAGE_SCEND_S3D + 1;
225 } else
226 return 0;
227 }
228 } else {
229 ret = savage_verify_state_s4(dev_priv, start, count, regs);
230 if (ret != 0)
231 return ret;
232 /* scissor regs are emitted in savage_dispatch_draw */
233 if (start < SAVAGE_DRAWCTRL0_S4) {
234 if (start + count > SAVAGE_DRAWCTRL1_S4 + 1)
235 count2 = count -
236 (SAVAGE_DRAWCTRL1_S4 + 1 - start);
237 if (start + count > SAVAGE_DRAWCTRL0_S4)
238 count = SAVAGE_DRAWCTRL0_S4 - start;
239 } else if (start <= SAVAGE_DRAWCTRL1_S4) {
240 if (start + count > SAVAGE_DRAWCTRL1_S4 + 1) {
241 count -= SAVAGE_DRAWCTRL1_S4 + 1 - start;
242 start = SAVAGE_DRAWCTRL1_S4 + 1;
243 } else
244 return 0;
245 }
246 }
247
248 bci_size = count + (count + 254) / 255 + count2 + (count2 + 254) / 255;
249
250 if (cmd_header->state.global) {
251 BEGIN_DMA(bci_size + 1);
252 DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
253 dev_priv->waiting = 1;
254 } else {
255 BEGIN_DMA(bci_size);
256 }
257
258 do {
259 while (count > 0) {
260 unsigned int n = count < 255 ? count : 255;
261 DMA_SET_REGISTERS(start, n);
262 DMA_COPY(regs, n);
263 count -= n;
264 start += n;
265 regs += n;
266 }
267 start += 2;
268 regs += 2;
269 count = count2;
270 count2 = 0;
271 } while (count);
272
273 DMA_COMMIT();
274
275 return 0;
276}
277
278static int savage_dispatch_dma_prim(drm_savage_private_t * dev_priv,
279 const drm_savage_cmd_header_t * cmd_header,
280 const struct drm_buf * dmabuf)
281{
282 unsigned char reorder = 0;
283 unsigned int prim = cmd_header->prim.prim;
284 unsigned int skip = cmd_header->prim.skip;
285 unsigned int n = cmd_header->prim.count;
286 unsigned int start = cmd_header->prim.start;
287 unsigned int i;
288 BCI_LOCALS;
289
290 if (!dmabuf) {
291 DRM_ERROR("called without dma buffers!\n");
292 return -EINVAL;
293 }
294
295 if (!n)
296 return 0;
297
298 switch (prim) {
299 case SAVAGE_PRIM_TRILIST_201:
300 reorder = 1;
301 prim = SAVAGE_PRIM_TRILIST;
302 case SAVAGE_PRIM_TRILIST:
303 if (n % 3 != 0) {
304 DRM_ERROR("wrong number of vertices %u in TRILIST\n",
305 n);
306 return -EINVAL;
307 }
308 break;
309 case SAVAGE_PRIM_TRISTRIP:
310 case SAVAGE_PRIM_TRIFAN:
311 if (n < 3) {
312 DRM_ERROR
313 ("wrong number of vertices %u in TRIFAN/STRIP\n",
314 n);
315 return -EINVAL;
316 }
317 break;
318 default:
319 DRM_ERROR("invalid primitive type %u\n", prim);
320 return -EINVAL;
321 }
322
323 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
324 if (skip != 0) {
325 DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
326 return -EINVAL;
327 }
328 } else {
329 unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
330 (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
331 (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
332 if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
333 DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
334 return -EINVAL;
335 }
336 if (reorder) {
337 DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
338 return -EINVAL;
339 }
340 }
341
342 if (start + n > dmabuf->total / 32) {
343 DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
344 start, start + n - 1, dmabuf->total / 32);
345 return -EINVAL;
346 }
347
348 /* Vertex DMA doesn't work with command DMA at the same time,
349 * so we use BCI_... to submit commands here. Flush buffered
350 * faked DMA first. */
351 DMA_FLUSH();
352
353 if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
354 BEGIN_BCI(2);
355 BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
356 BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
357 dev_priv->state.common.vbaddr = dmabuf->bus_address;
358 }
359 if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
360 /* Workaround for what looks like a hardware bug. If a
361 * WAIT_3D_IDLE was emitted some time before the
362 * indexed drawing command then the engine will lock
363 * up. There are two known workarounds:
364 * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
365 BEGIN_BCI(63);
366 for (i = 0; i < 63; ++i)
367 BCI_WRITE(BCI_CMD_WAIT);
368 dev_priv->waiting = 0;
369 }
370
371 prim <<= 25;
372 while (n != 0) {
373 /* Can emit up to 255 indices (85 triangles) at once. */
374 unsigned int count = n > 255 ? 255 : n;
375 if (reorder) {
376 /* Need to reorder indices for correct flat
377 * shading while preserving the clock sense
378 * for correct culling. Only on Savage3D. */
379 int reorder[3] = { -1, -1, -1 };
380 reorder[start % 3] = 2;
381
382 BEGIN_BCI((count + 1 + 1) / 2);
383 BCI_DRAW_INDICES_S3D(count, prim, start + 2);
384
385 for (i = start + 1; i + 1 < start + count; i += 2)
386 BCI_WRITE((i + reorder[i % 3]) |
387 ((i + 1 +
388 reorder[(i + 1) % 3]) << 16));
389 if (i < start + count)
390 BCI_WRITE(i + reorder[i % 3]);
391 } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
392 BEGIN_BCI((count + 1 + 1) / 2);
393 BCI_DRAW_INDICES_S3D(count, prim, start);
394
395 for (i = start + 1; i + 1 < start + count; i += 2)
396 BCI_WRITE(i | ((i + 1) << 16));
397 if (i < start + count)
398 BCI_WRITE(i);
399 } else {
400 BEGIN_BCI((count + 2 + 1) / 2);
401 BCI_DRAW_INDICES_S4(count, prim, skip);
402
403 for (i = start; i + 1 < start + count; i += 2)
404 BCI_WRITE(i | ((i + 1) << 16));
405 if (i < start + count)
406 BCI_WRITE(i);
407 }
408
409 start += count;
410 n -= count;
411
412 prim |= BCI_CMD_DRAW_CONT;
413 }
414
415 return 0;
416}
417
418static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
419 const drm_savage_cmd_header_t * cmd_header,
420 const uint32_t *vtxbuf, unsigned int vb_size,
421 unsigned int vb_stride)
422{
423 unsigned char reorder = 0;
424 unsigned int prim = cmd_header->prim.prim;
425 unsigned int skip = cmd_header->prim.skip;
426 unsigned int n = cmd_header->prim.count;
427 unsigned int start = cmd_header->prim.start;
428 unsigned int vtx_size;
429 unsigned int i;
430 DMA_LOCALS;
431
432 if (!n)
433 return 0;
434
435 switch (prim) {
436 case SAVAGE_PRIM_TRILIST_201:
437 reorder = 1;
438 prim = SAVAGE_PRIM_TRILIST;
439 case SAVAGE_PRIM_TRILIST:
440 if (n % 3 != 0) {
441 DRM_ERROR("wrong number of vertices %u in TRILIST\n",
442 n);
443 return -EINVAL;
444 }
445 break;
446 case SAVAGE_PRIM_TRISTRIP:
447 case SAVAGE_PRIM_TRIFAN:
448 if (n < 3) {
449 DRM_ERROR
450 ("wrong number of vertices %u in TRIFAN/STRIP\n",
451 n);
452 return -EINVAL;
453 }
454 break;
455 default:
456 DRM_ERROR("invalid primitive type %u\n", prim);
457 return -EINVAL;
458 }
459
460 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
461 if (skip > SAVAGE_SKIP_ALL_S3D) {
462 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
463 return -EINVAL;
464 }
465 vtx_size = 8; /* full vertex */
466 } else {
467 if (skip > SAVAGE_SKIP_ALL_S4) {
468 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
469 return -EINVAL;
470 }
471 vtx_size = 10; /* full vertex */
472 }
473
474 vtx_size -= (skip & 1) + (skip >> 1 & 1) +
475 (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
476 (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
477
478 if (vtx_size > vb_stride) {
479 DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
480 vtx_size, vb_stride);
481 return -EINVAL;
482 }
483
484 if (start + n > vb_size / (vb_stride * 4)) {
485 DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
486 start, start + n - 1, vb_size / (vb_stride * 4));
487 return -EINVAL;
488 }
489
490 prim <<= 25;
491 while (n != 0) {
492 /* Can emit up to 255 vertices (85 triangles) at once. */
493 unsigned int count = n > 255 ? 255 : n;
494 if (reorder) {
495 /* Need to reorder vertices for correct flat
496 * shading while preserving the clock sense
497 * for correct culling. Only on Savage3D. */
498 int reorder[3] = { -1, -1, -1 };
499 reorder[start % 3] = 2;
500
501 BEGIN_DMA(count * vtx_size + 1);
502 DMA_DRAW_PRIMITIVE(count, prim, skip);
503
504 for (i = start; i < start + count; ++i) {
505 unsigned int j = i + reorder[i % 3];
506 DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
507 }
508
509 DMA_COMMIT();
510 } else {
511 BEGIN_DMA(count * vtx_size + 1);
512 DMA_DRAW_PRIMITIVE(count, prim, skip);
513
514 if (vb_stride == vtx_size) {
515 DMA_COPY(&vtxbuf[vb_stride * start],
516 vtx_size * count);
517 } else {
518 for (i = start; i < start + count; ++i) {
519 DMA_COPY(&vtxbuf [vb_stride * i],
520 vtx_size);
521 }
522 }
523
524 DMA_COMMIT();
525 }
526
527 start += count;
528 n -= count;
529
530 prim |= BCI_CMD_DRAW_CONT;
531 }
532
533 return 0;
534}
535
536static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
537 const drm_savage_cmd_header_t * cmd_header,
538 const uint16_t *idx,
539 const struct drm_buf * dmabuf)
540{
541 unsigned char reorder = 0;
542 unsigned int prim = cmd_header->idx.prim;
543 unsigned int skip = cmd_header->idx.skip;
544 unsigned int n = cmd_header->idx.count;
545 unsigned int i;
546 BCI_LOCALS;
547
548 if (!dmabuf) {
549 DRM_ERROR("called without dma buffers!\n");
550 return -EINVAL;
551 }
552
553 if (!n)
554 return 0;
555
556 switch (prim) {
557 case SAVAGE_PRIM_TRILIST_201:
558 reorder = 1;
559 prim = SAVAGE_PRIM_TRILIST;
560 case SAVAGE_PRIM_TRILIST:
561 if (n % 3 != 0) {
562 DRM_ERROR("wrong number of indices %u in TRILIST\n", n);
563 return -EINVAL;
564 }
565 break;
566 case SAVAGE_PRIM_TRISTRIP:
567 case SAVAGE_PRIM_TRIFAN:
568 if (n < 3) {
569 DRM_ERROR
570 ("wrong number of indices %u in TRIFAN/STRIP\n", n);
571 return -EINVAL;
572 }
573 break;
574 default:
575 DRM_ERROR("invalid primitive type %u\n", prim);
576 return -EINVAL;
577 }
578
579 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
580 if (skip != 0) {
581 DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
582 return -EINVAL;
583 }
584 } else {
585 unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
586 (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
587 (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
588 if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
589 DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
590 return -EINVAL;
591 }
592 if (reorder) {
593 DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
594 return -EINVAL;
595 }
596 }
597
598 /* Vertex DMA doesn't work with command DMA at the same time,
599 * so we use BCI_... to submit commands here. Flush buffered
600 * faked DMA first. */
601 DMA_FLUSH();
602
603 if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
604 BEGIN_BCI(2);
605 BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
606 BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
607 dev_priv->state.common.vbaddr = dmabuf->bus_address;
608 }
609 if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
610 /* Workaround for what looks like a hardware bug. If a
611 * WAIT_3D_IDLE was emitted some time before the
612 * indexed drawing command then the engine will lock
613 * up. There are two known workarounds:
614 * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
615 BEGIN_BCI(63);
616 for (i = 0; i < 63; ++i)
617 BCI_WRITE(BCI_CMD_WAIT);
618 dev_priv->waiting = 0;
619 }
620
621 prim <<= 25;
622 while (n != 0) {
623 /* Can emit up to 255 indices (85 triangles) at once. */
624 unsigned int count = n > 255 ? 255 : n;
625
626 /* check indices */
627 for (i = 0; i < count; ++i) {
628 if (idx[i] > dmabuf->total / 32) {
629 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
630 i, idx[i], dmabuf->total / 32);
631 return -EINVAL;
632 }
633 }
634
635 if (reorder) {
636 /* Need to reorder indices for correct flat
637 * shading while preserving the clock sense
638 * for correct culling. Only on Savage3D. */
639 int reorder[3] = { 2, -1, -1 };
640
641 BEGIN_BCI((count + 1 + 1) / 2);
642 BCI_DRAW_INDICES_S3D(count, prim, idx[2]);
643
644 for (i = 1; i + 1 < count; i += 2)
645 BCI_WRITE(idx[i + reorder[i % 3]] |
646 (idx[i + 1 +
647 reorder[(i + 1) % 3]] << 16));
648 if (i < count)
649 BCI_WRITE(idx[i + reorder[i % 3]]);
650 } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
651 BEGIN_BCI((count + 1 + 1) / 2);
652 BCI_DRAW_INDICES_S3D(count, prim, idx[0]);
653
654 for (i = 1; i + 1 < count; i += 2)
655 BCI_WRITE(idx[i] | (idx[i + 1] << 16));
656 if (i < count)
657 BCI_WRITE(idx[i]);
658 } else {
659 BEGIN_BCI((count + 2 + 1) / 2);
660 BCI_DRAW_INDICES_S4(count, prim, skip);
661
662 for (i = 0; i + 1 < count; i += 2)
663 BCI_WRITE(idx[i] | (idx[i + 1] << 16));
664 if (i < count)
665 BCI_WRITE(idx[i]);
666 }
667
668 idx += count;
669 n -= count;
670
671 prim |= BCI_CMD_DRAW_CONT;
672 }
673
674 return 0;
675}
676
677static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
678 const drm_savage_cmd_header_t * cmd_header,
679 const uint16_t *idx,
680 const uint32_t *vtxbuf,
681 unsigned int vb_size, unsigned int vb_stride)
682{
683 unsigned char reorder = 0;
684 unsigned int prim = cmd_header->idx.prim;
685 unsigned int skip = cmd_header->idx.skip;
686 unsigned int n = cmd_header->idx.count;
687 unsigned int vtx_size;
688 unsigned int i;
689 DMA_LOCALS;
690
691 if (!n)
692 return 0;
693
694 switch (prim) {
695 case SAVAGE_PRIM_TRILIST_201:
696 reorder = 1;
697 prim = SAVAGE_PRIM_TRILIST;
698 case SAVAGE_PRIM_TRILIST:
699 if (n % 3 != 0) {
700 DRM_ERROR("wrong number of indices %u in TRILIST\n", n);
701 return -EINVAL;
702 }
703 break;
704 case SAVAGE_PRIM_TRISTRIP:
705 case SAVAGE_PRIM_TRIFAN:
706 if (n < 3) {
707 DRM_ERROR
708 ("wrong number of indices %u in TRIFAN/STRIP\n", n);
709 return -EINVAL;
710 }
711 break;
712 default:
713 DRM_ERROR("invalid primitive type %u\n", prim);
714 return -EINVAL;
715 }
716
717 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
718 if (skip > SAVAGE_SKIP_ALL_S3D) {
719 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
720 return -EINVAL;
721 }
722 vtx_size = 8; /* full vertex */
723 } else {
724 if (skip > SAVAGE_SKIP_ALL_S4) {
725 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
726 return -EINVAL;
727 }
728 vtx_size = 10; /* full vertex */
729 }
730
731 vtx_size -= (skip & 1) + (skip >> 1 & 1) +
732 (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
733 (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
734
735 if (vtx_size > vb_stride) {
736 DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
737 vtx_size, vb_stride);
738 return -EINVAL;
739 }
740
741 prim <<= 25;
742 while (n != 0) {
743 /* Can emit up to 255 vertices (85 triangles) at once. */
744 unsigned int count = n > 255 ? 255 : n;
745
746 /* Check indices */
747 for (i = 0; i < count; ++i) {
748 if (idx[i] > vb_size / (vb_stride * 4)) {
749 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
750 i, idx[i], vb_size / (vb_stride * 4));
751 return -EINVAL;
752 }
753 }
754
755 if (reorder) {
756 /* Need to reorder vertices for correct flat
757 * shading while preserving the clock sense
758 * for correct culling. Only on Savage3D. */
759 int reorder[3] = { 2, -1, -1 };
760
761 BEGIN_DMA(count * vtx_size + 1);
762 DMA_DRAW_PRIMITIVE(count, prim, skip);
763
764 for (i = 0; i < count; ++i) {
765 unsigned int j = idx[i + reorder[i % 3]];
766 DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
767 }
768
769 DMA_COMMIT();
770 } else {
771 BEGIN_DMA(count * vtx_size + 1);
772 DMA_DRAW_PRIMITIVE(count, prim, skip);
773
774 for (i = 0; i < count; ++i) {
775 unsigned int j = idx[i];
776 DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
777 }
778
779 DMA_COMMIT();
780 }
781
782 idx += count;
783 n -= count;
784
785 prim |= BCI_CMD_DRAW_CONT;
786 }
787
788 return 0;
789}
790
791static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
792 const drm_savage_cmd_header_t * cmd_header,
793 const drm_savage_cmd_header_t *data,
794 unsigned int nbox,
795 const struct drm_clip_rect *boxes)
796{
797 unsigned int flags = cmd_header->clear0.flags;
798 unsigned int clear_cmd;
799 unsigned int i, nbufs;
800 DMA_LOCALS;
801
802 if (nbox == 0)
803 return 0;
804
805 clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
806 BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW;
807 BCI_CMD_SET_ROP(clear_cmd, 0xCC);
808
809 nbufs = ((flags & SAVAGE_FRONT) ? 1 : 0) +
810 ((flags & SAVAGE_BACK) ? 1 : 0) + ((flags & SAVAGE_DEPTH) ? 1 : 0);
811 if (nbufs == 0)
812 return 0;
813
814 if (data->clear1.mask != 0xffffffff) {
815 /* set mask */
816 BEGIN_DMA(2);
817 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
818 DMA_WRITE(data->clear1.mask);
819 DMA_COMMIT();
820 }
821 for (i = 0; i < nbox; ++i) {
822 unsigned int x, y, w, h;
823 unsigned int buf;
824 x = boxes[i].x1, y = boxes[i].y1;
825 w = boxes[i].x2 - boxes[i].x1;
826 h = boxes[i].y2 - boxes[i].y1;
827 BEGIN_DMA(nbufs * 6);
828 for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) {
829 if (!(flags & buf))
830 continue;
831 DMA_WRITE(clear_cmd);
832 switch (buf) {
833 case SAVAGE_FRONT:
834 DMA_WRITE(dev_priv->front_offset);
835 DMA_WRITE(dev_priv->front_bd);
836 break;
837 case SAVAGE_BACK:
838 DMA_WRITE(dev_priv->back_offset);
839 DMA_WRITE(dev_priv->back_bd);
840 break;
841 case SAVAGE_DEPTH:
842 DMA_WRITE(dev_priv->depth_offset);
843 DMA_WRITE(dev_priv->depth_bd);
844 break;
845 }
846 DMA_WRITE(data->clear1.value);
847 DMA_WRITE(BCI_X_Y(x, y));
848 DMA_WRITE(BCI_W_H(w, h));
849 }
850 DMA_COMMIT();
851 }
852 if (data->clear1.mask != 0xffffffff) {
853 /* reset mask */
854 BEGIN_DMA(2);
855 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
856 DMA_WRITE(0xffffffff);
857 DMA_COMMIT();
858 }
859
860 return 0;
861}
862
863static int savage_dispatch_swap(drm_savage_private_t * dev_priv,
864 unsigned int nbox, const struct drm_clip_rect *boxes)
865{
866 unsigned int swap_cmd;
867 unsigned int i;
868 DMA_LOCALS;
869
870 if (nbox == 0)
871 return 0;
872
873 swap_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
874 BCI_CMD_SRC_PBD_COLOR_NEW | BCI_CMD_DEST_GBD;
875 BCI_CMD_SET_ROP(swap_cmd, 0xCC);
876
877 for (i = 0; i < nbox; ++i) {
878 BEGIN_DMA(6);
879 DMA_WRITE(swap_cmd);
880 DMA_WRITE(dev_priv->back_offset);
881 DMA_WRITE(dev_priv->back_bd);
882 DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
883 DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
884 DMA_WRITE(BCI_W_H(boxes[i].x2 - boxes[i].x1,
885 boxes[i].y2 - boxes[i].y1));
886 DMA_COMMIT();
887 }
888
889 return 0;
890}
891
892static int savage_dispatch_draw(drm_savage_private_t * dev_priv,
893 const drm_savage_cmd_header_t *start,
894 const drm_savage_cmd_header_t *end,
895 const struct drm_buf * dmabuf,
896 const unsigned int *vtxbuf,
897 unsigned int vb_size, unsigned int vb_stride,
898 unsigned int nbox,
899 const struct drm_clip_rect *boxes)
900{
901 unsigned int i, j;
902 int ret;
903
904 for (i = 0; i < nbox; ++i) {
905 const drm_savage_cmd_header_t *cmdbuf;
906 dev_priv->emit_clip_rect(dev_priv, &boxes[i]);
907
908 cmdbuf = start;
909 while (cmdbuf < end) {
910 drm_savage_cmd_header_t cmd_header;
911 cmd_header = *cmdbuf;
912 cmdbuf++;
913 switch (cmd_header.cmd.cmd) {
914 case SAVAGE_CMD_DMA_PRIM:
915 ret = savage_dispatch_dma_prim(
916 dev_priv, &cmd_header, dmabuf);
917 break;
918 case SAVAGE_CMD_VB_PRIM:
919 ret = savage_dispatch_vb_prim(
920 dev_priv, &cmd_header,
921 vtxbuf, vb_size, vb_stride);
922 break;
923 case SAVAGE_CMD_DMA_IDX:
924 j = (cmd_header.idx.count + 3) / 4;
925 /* j was check in savage_bci_cmdbuf */
926 ret = savage_dispatch_dma_idx(dev_priv,
927 &cmd_header, (const uint16_t *)cmdbuf,
928 dmabuf);
929 cmdbuf += j;
930 break;
931 case SAVAGE_CMD_VB_IDX:
932 j = (cmd_header.idx.count + 3) / 4;
933 /* j was check in savage_bci_cmdbuf */
934 ret = savage_dispatch_vb_idx(dev_priv,
935 &cmd_header, (const uint16_t *)cmdbuf,
936 (const uint32_t *)vtxbuf, vb_size,
937 vb_stride);
938 cmdbuf += j;
939 break;
940 default:
941 /* What's the best return code? EFAULT? */
942 DRM_ERROR("IMPLEMENTATION ERROR: "
943 "non-drawing-command %d\n",
944 cmd_header.cmd.cmd);
945 return -EINVAL;
946 }
947
948 if (ret != 0)
949 return ret;
950 }
951 }
952
953 return 0;
954}
955
956int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv)
957{
958 drm_savage_private_t *dev_priv = dev->dev_private;
959 struct drm_device_dma *dma = dev->dma;
960 struct drm_buf *dmabuf;
961 drm_savage_cmdbuf_t *cmdbuf = data;
962 drm_savage_cmd_header_t *kcmd_addr = NULL;
963 drm_savage_cmd_header_t *first_draw_cmd;
964 unsigned int *kvb_addr = NULL;
965 struct drm_clip_rect *kbox_addr = NULL;
966 unsigned int i, j;
967 int ret = 0;
968
969 DRM_DEBUG("\n");
970
971 LOCK_TEST_WITH_RETURN(dev, file_priv);
972
973 if (dma && dma->buflist) {
974 if (cmdbuf->dma_idx > dma->buf_count) {
975 DRM_ERROR
976 ("vertex buffer index %u out of range (0-%u)\n",
977 cmdbuf->dma_idx, dma->buf_count - 1);
978 return -EINVAL;
979 }
980 dmabuf = dma->buflist[cmdbuf->dma_idx];
981 } else {
982 dmabuf = NULL;
983 }
984
985 /* Copy the user buffers into kernel temporary areas. This hasn't been
986 * a performance loss compared to VERIFYAREA_READ/
987 * COPY_FROM_USER_UNCHECKED when done in other drivers, and is correct
988 * for locking on FreeBSD.
989 */
990 if (cmdbuf->size) {
991 kcmd_addr = drm_alloc(cmdbuf->size * 8, DRM_MEM_DRIVER);
992 if (kcmd_addr == NULL)
993 return -ENOMEM;
994
995 if (DRM_COPY_FROM_USER(kcmd_addr, cmdbuf->cmd_addr,
996 cmdbuf->size * 8))
997 {
998 drm_free(kcmd_addr, cmdbuf->size * 8, DRM_MEM_DRIVER);
999 return -EFAULT;
1000 }
1001 cmdbuf->cmd_addr = kcmd_addr;
1002 }
1003 if (cmdbuf->vb_size) {
1004 kvb_addr = drm_alloc(cmdbuf->vb_size, DRM_MEM_DRIVER);
1005 if (kvb_addr == NULL) {
1006 ret = -ENOMEM;
1007 goto done;
1008 }
1009
1010 if (DRM_COPY_FROM_USER(kvb_addr, cmdbuf->vb_addr,
1011 cmdbuf->vb_size)) {
1012 ret = -EFAULT;
1013 goto done;
1014 }
1015 cmdbuf->vb_addr = kvb_addr;
1016 }
1017 if (cmdbuf->nbox) {
1018 kbox_addr = drm_alloc(cmdbuf->nbox * sizeof(struct drm_clip_rect),
1019 DRM_MEM_DRIVER);
1020 if (kbox_addr == NULL) {
1021 ret = -ENOMEM;
1022 goto done;
1023 }
1024
1025 if (DRM_COPY_FROM_USER(kbox_addr, cmdbuf->box_addr,
1026 cmdbuf->nbox * sizeof(struct drm_clip_rect))) {
1027 ret = -EFAULT;
1028 goto done;
1029 }
1030 cmdbuf->box_addr = kbox_addr;
1031 }
1032
1033 /* Make sure writes to DMA buffers are finished before sending
1034 * DMA commands to the graphics hardware. */
1035 DRM_MEMORYBARRIER();
1036
1037 /* Coming from user space. Don't know if the Xserver has
1038 * emitted wait commands. Assuming the worst. */
1039 dev_priv->waiting = 1;
1040
1041 i = 0;
1042 first_draw_cmd = NULL;
1043 while (i < cmdbuf->size) {
1044 drm_savage_cmd_header_t cmd_header;
1045 cmd_header = *(drm_savage_cmd_header_t *)cmdbuf->cmd_addr;
1046 cmdbuf->cmd_addr++;
1047 i++;
1048
1049 /* Group drawing commands with same state to minimize
1050 * iterations over clip rects. */
1051 j = 0;
1052 switch (cmd_header.cmd.cmd) {
1053 case SAVAGE_CMD_DMA_IDX:
1054 case SAVAGE_CMD_VB_IDX:
1055 j = (cmd_header.idx.count + 3) / 4;
1056 if (i + j > cmdbuf->size) {
1057 DRM_ERROR("indexed drawing command extends "
1058 "beyond end of command buffer\n");
1059 DMA_FLUSH();
1060 return -EINVAL;
1061 }
1062 /* fall through */
1063 case SAVAGE_CMD_DMA_PRIM:
1064 case SAVAGE_CMD_VB_PRIM:
1065 if (!first_draw_cmd)
1066 first_draw_cmd = cmdbuf->cmd_addr - 1;
1067 cmdbuf->cmd_addr += j;
1068 i += j;
1069 break;
1070 default:
1071 if (first_draw_cmd) {
1072 ret = savage_dispatch_draw(
1073 dev_priv, first_draw_cmd,
1074 cmdbuf->cmd_addr - 1,
1075 dmabuf, cmdbuf->vb_addr, cmdbuf->vb_size,
1076 cmdbuf->vb_stride,
1077 cmdbuf->nbox, cmdbuf->box_addr);
1078 if (ret != 0)
1079 return ret;
1080 first_draw_cmd = NULL;
1081 }
1082 }
1083 if (first_draw_cmd)
1084 continue;
1085
1086 switch (cmd_header.cmd.cmd) {
1087 case SAVAGE_CMD_STATE:
1088 j = (cmd_header.state.count + 1) / 2;
1089 if (i + j > cmdbuf->size) {
1090 DRM_ERROR("command SAVAGE_CMD_STATE extends "
1091 "beyond end of command buffer\n");
1092 DMA_FLUSH();
1093 ret = -EINVAL;
1094 goto done;
1095 }
1096 ret = savage_dispatch_state(dev_priv, &cmd_header,
1097 (const uint32_t *)cmdbuf->cmd_addr);
1098 cmdbuf->cmd_addr += j;
1099 i += j;
1100 break;
1101 case SAVAGE_CMD_CLEAR:
1102 if (i + 1 > cmdbuf->size) {
1103 DRM_ERROR("command SAVAGE_CMD_CLEAR extends "
1104 "beyond end of command buffer\n");
1105 DMA_FLUSH();
1106 ret = -EINVAL;
1107 goto done;
1108 }
1109 ret = savage_dispatch_clear(dev_priv, &cmd_header,
1110 cmdbuf->cmd_addr,
1111 cmdbuf->nbox,
1112 cmdbuf->box_addr);
1113 cmdbuf->cmd_addr++;
1114 i++;
1115 break;
1116 case SAVAGE_CMD_SWAP:
1117 ret = savage_dispatch_swap(dev_priv, cmdbuf->nbox,
1118 cmdbuf->box_addr);
1119 break;
1120 default:
1121 DRM_ERROR("invalid command 0x%x\n",
1122 cmd_header.cmd.cmd);
1123 DMA_FLUSH();
1124 ret = -EINVAL;
1125 goto done;
1126 }
1127
1128 if (ret != 0) {
1129 DMA_FLUSH();
1130 goto done;
1131 }
1132 }
1133
1134 if (first_draw_cmd) {
1135 ret = savage_dispatch_draw (
1136 dev_priv, first_draw_cmd, cmdbuf->cmd_addr, dmabuf,
1137 cmdbuf->vb_addr, cmdbuf->vb_size, cmdbuf->vb_stride,
1138 cmdbuf->nbox, cmdbuf->box_addr);
1139 if (ret != 0) {
1140 DMA_FLUSH();
1141 goto done;
1142 }
1143 }
1144
1145 DMA_FLUSH();
1146
1147 if (dmabuf && cmdbuf->discard) {
1148 drm_savage_buf_priv_t *buf_priv = dmabuf->dev_private;
1149 uint16_t event;
1150 event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
1151 SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
1152 savage_freelist_put(dev, dmabuf);
1153 }
1154
1155done:
1156 /* If we didn't need to allocate them, these'll be NULL */
1157 drm_free(kcmd_addr, cmdbuf->size * 8, DRM_MEM_DRIVER);
1158 drm_free(kvb_addr, cmdbuf->vb_size, DRM_MEM_DRIVER);
1159 drm_free(kbox_addr, cmdbuf->nbox * sizeof(struct drm_clip_rect),
1160 DRM_MEM_DRIVER);
1161
1162 return ret;
1163}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 10:04:27 -0500