aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/char
diff options
context:
space:
mode:
authorDave Airlie <airlied@starflyer.(none)>2005-08-07 01:43:54 -0400
committerDave Airlie <airlied@linux.ie>2005-08-07 01:43:54 -0400
commit282a16749ba63256bcdce2766817f46aaac4dc20 (patch)
tree51a44a864e8f526c1654a08ea5a57fadddab25ad /drivers/char
parentd27c9b548ad79c14830c57355dbe3a35f970532a (diff)
drm: add savage driver
Add driver for savage chipsets. From: Felix Kuehling Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/drm/Kconfig7
-rw-r--r--drivers/char/drm/Makefile3
-rw-r--r--drivers/char/drm/savage_bci.c1096
-rw-r--r--drivers/char/drm/savage_drm.h209
-rw-r--r--drivers/char/drm/savage_drv.c112
-rw-r--r--drivers/char/drm/savage_drv.h579
-rw-r--r--drivers/char/drm/savage_state.c1146
7 files changed, 3152 insertions, 0 deletions
diff --git a/drivers/char/drm/Kconfig b/drivers/char/drm/Kconfig
index f31b9706ef65..56ace9d5e2ae 100644
--- a/drivers/char/drm/Kconfig
+++ b/drivers/char/drm/Kconfig
@@ -96,3 +96,10 @@ config DRM_VIA
96 Choose this option if you have a Via unichrome or compatible video 96 Choose this option if you have a Via unichrome or compatible video
97 chipset. If M is selected the module will be called via. 97 chipset. If M is selected the module will be called via.
98 98
99config DRM_SAVAGE
100 tristate "Savage video cards"
101 depends on DRM
102 help
103 Choose this option if you have a Savage3D/4/SuperSavage/Pro/Twister
104 chipset. If M is selected the module will be called savage.
105
diff --git a/drivers/char/drm/Makefile b/drivers/char/drm/Makefile
index 3f0cf8e9cc50..1945138cb8fb 100644
--- a/drivers/char/drm/Makefile
+++ b/drivers/char/drm/Makefile
@@ -17,6 +17,7 @@ i915-objs := i915_drv.o i915_dma.o i915_irq.o i915_mem.o
17radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o 17radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o
18ffb-objs := ffb_drv.o ffb_context.o 18ffb-objs := ffb_drv.o ffb_context.o
19sis-objs := sis_drv.o sis_ds.o sis_mm.o 19sis-objs := sis_drv.o sis_ds.o sis_mm.o
20savage-objs := savage_drv.o savage_bci.o savage_state.o
20via-objs := via_irq.o via_drv.o via_ds.o via_map.o via_mm.o via_dma.o via_verifier.o via_video.o 21via-objs := via_irq.o via_drv.o via_ds.o via_map.o via_mm.o via_dma.o via_verifier.o via_video.o
21 22
22ifeq ($(CONFIG_COMPAT),y) 23ifeq ($(CONFIG_COMPAT),y)
@@ -37,5 +38,7 @@ obj-$(CONFIG_DRM_I830) += i830.o
37obj-$(CONFIG_DRM_I915) += i915.o 38obj-$(CONFIG_DRM_I915) += i915.o
38obj-$(CONFIG_DRM_FFB) += ffb.o 39obj-$(CONFIG_DRM_FFB) += ffb.o
39obj-$(CONFIG_DRM_SIS) += sis.o 40obj-$(CONFIG_DRM_SIS) += sis.o
41obj-$(CONFIG_DRM_SAVAGE)+= savage.o
40obj-$(CONFIG_DRM_VIA) +=via.o 42obj-$(CONFIG_DRM_VIA) +=via.o
41 43
44
diff --git a/drivers/char/drm/savage_bci.c b/drivers/char/drm/savage_bci.c
new file mode 100644
index 000000000000..2fd40bac7c97
--- /dev/null
+++ b/drivers/char/drm/savage_bci.c
@@ -0,0 +1,1096 @@
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
36savage_bci_wait_fifo_shadow(drm_savage_private_t *dev_priv, unsigned int n)
37{
38 uint32_t mask = dev_priv->status_used_mask;
39 uint32_t threshold = dev_priv->bci_threshold_hi;
40 uint32_t status;
41 int i;
42
43#if SAVAGE_BCI_DEBUG
44 if (n > dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - threshold)
45 DRM_ERROR("Trying to emit %d words "
46 "(more than guaranteed space in COB)\n", n);
47#endif
48
49 for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
50 DRM_MEMORYBARRIER();
51 status = dev_priv->status_ptr[0];
52 if ((status & mask) < threshold)
53 return 0;
54 DRM_UDELAY(1);
55 }
56
57#if SAVAGE_BCI_DEBUG
58 DRM_ERROR("failed!\n");
59 DRM_INFO(" status=0x%08x, threshold=0x%08x\n", status, threshold);
60#endif
61 return DRM_ERR(EBUSY);
62}
63
64static int
65savage_bci_wait_fifo_s3d(drm_savage_private_t *dev_priv, unsigned int n)
66{
67 uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
68 uint32_t status;
69 int i;
70
71 for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
72 status = SAVAGE_READ(SAVAGE_STATUS_WORD0);
73 if ((status & SAVAGE_FIFO_USED_MASK_S3D) <= maxUsed)
74 return 0;
75 DRM_UDELAY(1);
76 }
77
78#if SAVAGE_BCI_DEBUG
79 DRM_ERROR("failed!\n");
80 DRM_INFO(" status=0x%08x\n", status);
81#endif
82 return DRM_ERR(EBUSY);
83}
84
85static int
86savage_bci_wait_fifo_s4(drm_savage_private_t *dev_priv, unsigned int n)
87{
88 uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
89 uint32_t status;
90 int i;
91
92 for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
93 status = SAVAGE_READ(SAVAGE_ALT_STATUS_WORD0);
94 if ((status & SAVAGE_FIFO_USED_MASK_S4) <= maxUsed)
95 return 0;
96 DRM_UDELAY(1);
97 }
98
99#if SAVAGE_BCI_DEBUG
100 DRM_ERROR("failed!\n");
101 DRM_INFO(" status=0x%08x\n", status);
102#endif
103 return DRM_ERR(EBUSY);
104}
105
106/*
107 * Waiting for events.
108 *
109 * The BIOSresets the event tag to 0 on mode changes. Therefore we
110 * never emit 0 to the event tag. If we find a 0 event tag we know the
111 * BIOS stomped on it and return success assuming that the BIOS waited
112 * for engine idle.
113 *
114 * Note: if the Xserver uses the event tag it has to follow the same
115 * rule. Otherwise there may be glitches every 2^16 events.
116 */
117static int
118savage_bci_wait_event_shadow(drm_savage_private_t *dev_priv, uint16_t e)
119{
120 uint32_t status;
121 int i;
122
123 for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
124 DRM_MEMORYBARRIER();
125 status = dev_priv->status_ptr[1];
126 if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
127 (status & 0xffff) == 0)
128 return 0;
129 DRM_UDELAY(1);
130 }
131
132#if SAVAGE_BCI_DEBUG
133 DRM_ERROR("failed!\n");
134 DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e);
135#endif
136
137 return DRM_ERR(EBUSY);
138}
139
140static int
141savage_bci_wait_event_reg(drm_savage_private_t *dev_priv, uint16_t e)
142{
143 uint32_t status;
144 int i;
145
146 for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
147 status = SAVAGE_READ(SAVAGE_STATUS_WORD1);
148 if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
149 (status & 0xffff) == 0)
150 return 0;
151 DRM_UDELAY(1);
152 }
153
154#if SAVAGE_BCI_DEBUG
155 DRM_ERROR("failed!\n");
156 DRM_INFO(" status=0x%08x, e=0x%04x\n", status, e);
157#endif
158
159 return DRM_ERR(EBUSY);
160}
161
162uint16_t savage_bci_emit_event(drm_savage_private_t *dev_priv,
163 unsigned int flags)
164{
165 uint16_t count;
166 BCI_LOCALS;
167
168 if (dev_priv->status_ptr) {
169 /* coordinate with Xserver */
170 count = dev_priv->status_ptr[1023];
171 if (count < dev_priv->event_counter)
172 dev_priv->event_wrap++;
173 } else {
174 count = dev_priv->event_counter;
175 }
176 count = (count + 1) & 0xffff;
177 if (count == 0) {
178 count++; /* See the comment above savage_wait_event_*. */
179 dev_priv->event_wrap++;
180 }
181 dev_priv->event_counter = count;
182 if (dev_priv->status_ptr)
183 dev_priv->status_ptr[1023] = (uint32_t)count;
184
185 if ((flags & (SAVAGE_WAIT_2D | SAVAGE_WAIT_3D))) {
186 unsigned int wait_cmd = BCI_CMD_WAIT;
187 if ((flags & SAVAGE_WAIT_2D))
188 wait_cmd |= BCI_CMD_WAIT_2D;
189 if ((flags & SAVAGE_WAIT_3D))
190 wait_cmd |= BCI_CMD_WAIT_3D;
191 BEGIN_BCI(2);
192 BCI_WRITE(wait_cmd);
193 } else {
194 BEGIN_BCI(1);
195 }
196 BCI_WRITE(BCI_CMD_UPDATE_EVENT_TAG | (uint32_t)count);
197
198 return count;
199}
200
201/*
202 * Freelist management
203 */
204static int savage_freelist_init(drm_device_t *dev)
205{
206 drm_savage_private_t *dev_priv = dev->dev_private;
207 drm_device_dma_t *dma = dev->dma;
208 drm_buf_t *buf;
209 drm_savage_buf_priv_t *entry;
210 int i;
211 DRM_DEBUG("count=%d\n", dma->buf_count);
212
213 dev_priv->head.next = &dev_priv->tail;
214 dev_priv->head.prev = NULL;
215 dev_priv->head.buf = NULL;
216
217 dev_priv->tail.next = NULL;
218 dev_priv->tail.prev = &dev_priv->head;
219 dev_priv->tail.buf = NULL;
220
221 for (i = 0; i < dma->buf_count; i++) {
222 buf = dma->buflist[i];
223 entry = buf->dev_private;
224
225 SET_AGE(&entry->age, 0, 0);
226 entry->buf = buf;
227
228 entry->next = dev_priv->head.next;
229 entry->prev = &dev_priv->head;
230 dev_priv->head.next->prev = entry;
231 dev_priv->head.next = entry;
232 }
233
234 return 0;
235}
236
237static drm_buf_t *savage_freelist_get(drm_device_t *dev)
238{
239 drm_savage_private_t *dev_priv = dev->dev_private;
240 drm_savage_buf_priv_t *tail = dev_priv->tail.prev;
241 uint16_t event;
242 unsigned int wrap;
243 DRM_DEBUG("\n");
244
245 UPDATE_EVENT_COUNTER();
246 if (dev_priv->status_ptr)
247 event = dev_priv->status_ptr[1] & 0xffff;
248 else
249 event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
250 wrap = dev_priv->event_wrap;
251 if (event > dev_priv->event_counter)
252 wrap--; /* hardware hasn't passed the last wrap yet */
253
254 DRM_DEBUG(" tail=0x%04x %d\n", tail->age.event, tail->age.wrap);
255 DRM_DEBUG(" head=0x%04x %d\n", event, wrap);
256
257 if (tail->buf && (TEST_AGE(&tail->age, event, wrap) || event == 0)) {
258 drm_savage_buf_priv_t *next = tail->next;
259 drm_savage_buf_priv_t *prev = tail->prev;
260 prev->next = next;
261 next->prev = prev;
262 tail->next = tail->prev = NULL;
263 return tail->buf;
264 }
265
266 DRM_DEBUG("returning NULL, tail->buf=%p!\n", tail->buf);
267 return NULL;
268}
269
270void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf)
271{
272 drm_savage_private_t *dev_priv = dev->dev_private;
273 drm_savage_buf_priv_t *entry = buf->dev_private, *prev, *next;
274
275 DRM_DEBUG("age=0x%04x wrap=%d\n", entry->age.event, entry->age.wrap);
276
277 if (entry->next != NULL || entry->prev != NULL) {
278 DRM_ERROR("entry already on freelist.\n");
279 return;
280 }
281
282 prev = &dev_priv->head;
283 next = prev->next;
284 prev->next = entry;
285 next->prev = entry;
286 entry->prev = prev;
287 entry->next = next;
288}
289
290/*
291 * Command DMA
292 */
293static int savage_dma_init(drm_savage_private_t *dev_priv)
294{
295 unsigned int i;
296
297 dev_priv->nr_dma_pages = dev_priv->cmd_dma->size /
298 (SAVAGE_DMA_PAGE_SIZE*4);
299 dev_priv->dma_pages = drm_alloc(sizeof(drm_savage_dma_page_t) *
300 dev_priv->nr_dma_pages,
301 DRM_MEM_DRIVER);
302 if (dev_priv->dma_pages == NULL)
303 return DRM_ERR(ENOMEM);
304
305 for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
306 SET_AGE(&dev_priv->dma_pages[i].age, 0, 0);
307 dev_priv->dma_pages[i].used = 0;
308 dev_priv->dma_pages[i].flushed = 0;
309 }
310 SET_AGE(&dev_priv->last_dma_age, 0, 0);
311
312 dev_priv->first_dma_page = 0;
313 dev_priv->current_dma_page = 0;
314
315 return 0;
316}
317
318void savage_dma_reset(drm_savage_private_t *dev_priv)
319{
320 uint16_t event;
321 unsigned int wrap, i;
322 event = savage_bci_emit_event(dev_priv, 0);
323 wrap = dev_priv->event_wrap;
324 for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
325 SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
326 dev_priv->dma_pages[i].used = 0;
327 dev_priv->dma_pages[i].flushed = 0;
328 }
329 SET_AGE(&dev_priv->last_dma_age, event, wrap);
330 dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
331}
332
333void savage_dma_wait(drm_savage_private_t *dev_priv, unsigned int page)
334{
335 uint16_t event;
336 unsigned int wrap;
337
338 /* Faked DMA buffer pages don't age. */
339 if (dev_priv->cmd_dma == &dev_priv->fake_dma)
340 return;
341
342 UPDATE_EVENT_COUNTER();
343 if (dev_priv->status_ptr)
344 event = dev_priv->status_ptr[1] & 0xffff;
345 else
346 event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
347 wrap = dev_priv->event_wrap;
348 if (event > dev_priv->event_counter)
349 wrap--; /* hardware hasn't passed the last wrap yet */
350
351 if (dev_priv->dma_pages[page].age.wrap > wrap ||
352 (dev_priv->dma_pages[page].age.wrap == wrap &&
353 dev_priv->dma_pages[page].age.event > event)) {
354 if (dev_priv->wait_evnt(dev_priv,
355 dev_priv->dma_pages[page].age.event)
356 < 0)
357 DRM_ERROR("wait_evnt failed!\n");
358 }
359}
360
361uint32_t *savage_dma_alloc(drm_savage_private_t *dev_priv, unsigned int n)
362{
363 unsigned int cur = dev_priv->current_dma_page;
364 unsigned int rest = SAVAGE_DMA_PAGE_SIZE -
365 dev_priv->dma_pages[cur].used;
366 unsigned int nr_pages = (n - rest + SAVAGE_DMA_PAGE_SIZE-1) /
367 SAVAGE_DMA_PAGE_SIZE;
368 uint32_t *dma_ptr;
369 unsigned int i;
370
371 DRM_DEBUG("cur=%u, cur->used=%u, n=%u, rest=%u, nr_pages=%u\n",
372 cur, dev_priv->dma_pages[cur].used, n, rest, nr_pages);
373
374 if (cur + nr_pages < dev_priv->nr_dma_pages) {
375 dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle +
376 cur*SAVAGE_DMA_PAGE_SIZE +
377 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 = (n + SAVAGE_DMA_PAGE_SIZE-1) / SAVAGE_DMA_PAGE_SIZE;
386 for (i = cur; i < dev_priv->nr_dma_pages; ++i) {
387 dev_priv->dma_pages[i].age = dev_priv->last_dma_age;
388 dev_priv->dma_pages[i].used = 0;
389 dev_priv->dma_pages[i].flushed = 0;
390 }
391 dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle;
392 dev_priv->first_dma_page = cur = 0;
393 }
394 for (i = cur; nr_pages > 0; ++i, --nr_pages) {
395#if SAVAGE_DMA_DEBUG
396 if (dev_priv->dma_pages[i].used) {
397 DRM_ERROR("unflushed page %u: used=%u\n",
398 i, dev_priv->dma_pages[i].used);
399 }
400#endif
401 if (n > SAVAGE_DMA_PAGE_SIZE)
402 dev_priv->dma_pages[i].used = SAVAGE_DMA_PAGE_SIZE;
403 else
404 dev_priv->dma_pages[i].used = n;
405 n -= SAVAGE_DMA_PAGE_SIZE;
406 }
407 dev_priv->current_dma_page = --i;
408
409 DRM_DEBUG("cur=%u, cur->used=%u, n=%u\n",
410 i, dev_priv->dma_pages[i].used, n);
411
412 savage_dma_wait(dev_priv, dev_priv->current_dma_page);
413
414 return dma_ptr;
415}
416
417static void savage_dma_flush(drm_savage_private_t *dev_priv)
418{
419 unsigned int first = dev_priv->first_dma_page;
420 unsigned int cur = dev_priv->current_dma_page;
421 uint16_t event;
422 unsigned int wrap, pad, align, len, i;
423 unsigned long phys_addr;
424 BCI_LOCALS;
425
426 if (first == cur &&
427 dev_priv->dma_pages[cur].used == dev_priv->dma_pages[cur].flushed)
428 return;
429
430 /* pad length to multiples of 2 entries
431 * align start of next DMA block to multiles of 8 entries */
432 pad = -dev_priv->dma_pages[cur].used & 1;
433 align = -(dev_priv->dma_pages[cur].used + pad) & 7;
434
435 DRM_DEBUG("first=%u, cur=%u, first->flushed=%u, cur->used=%u, "
436 "pad=%u, align=%u\n",
437 first, cur, dev_priv->dma_pages[first].flushed,
438 dev_priv->dma_pages[cur].used, pad, align);
439
440 /* pad with noops */
441 if (pad) {
442 uint32_t *dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle +
443 cur * SAVAGE_DMA_PAGE_SIZE +
444 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 -
460 dev_priv->dma_pages[first].flushed;
461
462 DRM_DEBUG("phys_addr=%lx, len=%u\n",
463 phys_addr | dev_priv->dma_type, len);
464
465 BEGIN_BCI(3);
466 BCI_SET_REGISTERS(SAVAGE_DMABUFADDR, 1);
467 BCI_WRITE(phys_addr | dev_priv->dma_type);
468 BCI_DMA(len);
469
470 /* fix alignment of the start of the next block */
471 dev_priv->dma_pages[cur].used += align;
472
473 /* age DMA pages */
474 event = savage_bci_emit_event(dev_priv, 0);
475 wrap = dev_priv->event_wrap;
476 for (i = first; i < cur; ++i) {
477 SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
478 dev_priv->dma_pages[i].used = 0;
479 dev_priv->dma_pages[i].flushed = 0;
480 }
481 /* age the current page only when it's full */
482 if (dev_priv->dma_pages[cur].used == SAVAGE_DMA_PAGE_SIZE) {
483 SET_AGE(&dev_priv->dma_pages[cur].age, event, wrap);
484 dev_priv->dma_pages[cur].used = 0;
485 dev_priv->dma_pages[cur].flushed = 0;
486 /* advance to next page */
487 cur++;
488 if (cur == dev_priv->nr_dma_pages)
489 cur = 0;
490 dev_priv->first_dma_page = dev_priv->current_dma_page = cur;
491 } else {
492 dev_priv->first_dma_page = cur;
493 dev_priv->dma_pages[cur].flushed = dev_priv->dma_pages[i].used;
494 }
495 SET_AGE(&dev_priv->last_dma_age, event, wrap);
496
497 DRM_DEBUG("first=cur=%u, cur->used=%u, cur->flushed=%u\n", cur,
498 dev_priv->dma_pages[cur].used,
499 dev_priv->dma_pages[cur].flushed);
500}
501
502static void savage_fake_dma_flush(drm_savage_private_t *dev_priv)
503{
504 unsigned int i, j;
505 BCI_LOCALS;
506
507 if (dev_priv->first_dma_page == dev_priv->current_dma_page &&
508 dev_priv->dma_pages[dev_priv->current_dma_page].used == 0)
509 return;
510
511 DRM_DEBUG("first=%u, cur=%u, cur->used=%u\n",
512 dev_priv->first_dma_page, dev_priv->current_dma_page,
513 dev_priv->dma_pages[dev_priv->current_dma_page].used);
514
515 for (i = dev_priv->first_dma_page;
516 i <= dev_priv->current_dma_page && dev_priv->dma_pages[i].used;
517 ++i) {
518 uint32_t *dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle +
519 i * SAVAGE_DMA_PAGE_SIZE;
520#if SAVAGE_DMA_DEBUG
521 /* Sanity check: all pages except the last one must be full. */
522 if (i < dev_priv->current_dma_page &&
523 dev_priv->dma_pages[i].used != SAVAGE_DMA_PAGE_SIZE) {
524 DRM_ERROR("partial DMA page %u: used=%u",
525 i, dev_priv->dma_pages[i].used);
526 }
527#endif
528 BEGIN_BCI(dev_priv->dma_pages[i].used);
529 for (j = 0; j < dev_priv->dma_pages[i].used; ++j) {
530 BCI_WRITE(dma_ptr[j]);
531 }
532 dev_priv->dma_pages[i].used = 0;
533 }
534
535 /* reset to first page */
536 dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
537}
538
539/*
540 * Initalize mappings. On Savage4 and SavageIX the alignment
541 * and size of the aperture is not suitable for automatic MTRR setup
542 * in drm_addmap. Therefore we do it manually before the maps are
543 * initialized. We also need to take care of deleting the MTRRs in
544 * postcleanup.
545 */
546int savage_preinit(drm_device_t *dev, unsigned long chipset)
547{
548 drm_savage_private_t *dev_priv;
549 unsigned long mmio_base, fb_base, fb_size, aperture_base;
550 /* fb_rsrc and aper_rsrc aren't really used currently, but still exist
551 * in case we decide we need information on the BAR for BSD in the
552 * future.
553 */
554 unsigned int fb_rsrc, aper_rsrc;
555 int ret = 0;
556
557 dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
558 if (dev_priv == NULL)
559 return DRM_ERR(ENOMEM);
560
561 memset(dev_priv, 0, sizeof(drm_savage_private_t));
562 dev->dev_private = (void *)dev_priv;
563 dev_priv->chipset = (enum savage_family)chipset;
564
565 dev_priv->mtrr[0].handle = -1;
566 dev_priv->mtrr[1].handle = -1;
567 dev_priv->mtrr[2].handle = -1;
568 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
569 fb_rsrc = 0;
570 fb_base = drm_get_resource_start(dev, 0);
571 fb_size = SAVAGE_FB_SIZE_S3;
572 mmio_base = fb_base + SAVAGE_FB_SIZE_S3;
573 aper_rsrc = 0;
574 aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
575 /* this should always be true */
576 if (drm_get_resource_len(dev, 0) == 0x08000000) {
577 /* Don't make MMIO write-cobining! We need 3
578 * MTRRs. */
579 dev_priv->mtrr[0].base = fb_base;
580 dev_priv->mtrr[0].size = 0x01000000;
581 dev_priv->mtrr[0].handle = mtrr_add(
582 dev_priv->mtrr[0].base, dev_priv->mtrr[0].size,
583 MTRR_TYPE_WRCOMB, 1);
584 dev_priv->mtrr[1].base = fb_base+0x02000000;
585 dev_priv->mtrr[1].size = 0x02000000;
586 dev_priv->mtrr[1].handle = mtrr_add(
587 dev_priv->mtrr[1].base, dev_priv->mtrr[1].size,
588 MTRR_TYPE_WRCOMB, 1);
589 dev_priv->mtrr[2].base = fb_base+0x04000000;
590 dev_priv->mtrr[2].size = 0x04000000;
591 dev_priv->mtrr[2].handle = mtrr_add(
592 dev_priv->mtrr[2].base, dev_priv->mtrr[2].size,
593 MTRR_TYPE_WRCOMB, 1);
594 } else {
595 DRM_ERROR("strange pci_resource_len %08lx\n",
596 drm_get_resource_len(dev, 0));
597 }
598 } else if (chipset != S3_SUPERSAVAGE && chipset != S3_SAVAGE2000) {
599 mmio_base = drm_get_resource_start(dev, 0);
600 fb_rsrc = 1;
601 fb_base = drm_get_resource_start(dev, 1);
602 fb_size = SAVAGE_FB_SIZE_S4;
603 aper_rsrc = 1;
604 aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
605 /* this should always be true */
606 if (drm_get_resource_len(dev, 1) == 0x08000000) {
607 /* Can use one MTRR to cover both fb and
608 * aperture. */
609 dev_priv->mtrr[0].base = fb_base;
610 dev_priv->mtrr[0].size = 0x08000000;
611 dev_priv->mtrr[0].handle = mtrr_add(
612 dev_priv->mtrr[0].base, dev_priv->mtrr[0].size,
613 MTRR_TYPE_WRCOMB, 1);
614 } else {
615 DRM_ERROR("strange pci_resource_len %08lx\n",
616 drm_get_resource_len(dev, 1));
617 }
618 } else {
619 mmio_base = drm_get_resource_start(dev, 0);
620 fb_rsrc = 1;
621 fb_base = drm_get_resource_start(dev, 1);
622 fb_size = drm_get_resource_len(dev, 1);
623 aper_rsrc = 2;
624 aperture_base = drm_get_resource_start(dev, 2);
625 /* Automatic MTRR setup will do the right thing. */
626 }
627
628 ret = drm_addmap(dev, mmio_base, SAVAGE_MMIO_SIZE, _DRM_REGISTERS,
629 _DRM_READ_ONLY, &dev_priv->mmio);
630 if (ret)
631 return ret;
632
633 ret = drm_addmap(dev, fb_base, fb_size, _DRM_FRAME_BUFFER,
634 _DRM_WRITE_COMBINING, &dev_priv->fb);
635 if (ret)
636 return ret;
637
638 ret = drm_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE,
639 _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
640 &dev_priv->aperture);
641 if (ret)
642 return ret;
643
644 return ret;
645}
646
647/*
648 * Delete MTRRs and free device-private data.
649 */
650int savage_postcleanup(drm_device_t *dev)
651{
652 drm_savage_private_t *dev_priv = dev->dev_private;
653 int i;
654
655 for (i = 0; i < 3; ++i)
656 if (dev_priv->mtrr[i].handle >= 0)
657 mtrr_del(dev_priv->mtrr[i].handle,
658 dev_priv->mtrr[i].base,
659 dev_priv->mtrr[i].size);
660
661 drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
662
663 return 0;
664}
665
666static int savage_do_init_bci(drm_device_t *dev, drm_savage_init_t *init)
667{
668 drm_savage_private_t *dev_priv = dev->dev_private;
669
670 if (init->fb_bpp != 16 && init->fb_bpp != 32) {
671 DRM_ERROR("invalid frame buffer bpp %d!\n", init->fb_bpp);
672 return DRM_ERR(EINVAL);
673 }
674 if (init->depth_bpp != 16 && init->depth_bpp != 32) {
675 DRM_ERROR("invalid depth buffer bpp %d!\n", init->fb_bpp);
676 return DRM_ERR(EINVAL);
677 }
678 if (init->dma_type != SAVAGE_DMA_AGP &&
679 init->dma_type != SAVAGE_DMA_PCI) {
680 DRM_ERROR("invalid dma memory type %d!\n", init->dma_type);
681 return DRM_ERR(EINVAL);
682 }
683
684 dev_priv->cob_size = init->cob_size;
685 dev_priv->bci_threshold_lo = init->bci_threshold_lo;
686 dev_priv->bci_threshold_hi = init->bci_threshold_hi;
687 dev_priv->dma_type = init->dma_type;
688
689 dev_priv->fb_bpp = init->fb_bpp;
690 dev_priv->front_offset = init->front_offset;
691 dev_priv->front_pitch = init->front_pitch;
692 dev_priv->back_offset = init->back_offset;
693 dev_priv->back_pitch = init->back_pitch;
694 dev_priv->depth_bpp = init->depth_bpp;
695 dev_priv->depth_offset = init->depth_offset;
696 dev_priv->depth_pitch = init->depth_pitch;
697
698 dev_priv->texture_offset = init->texture_offset;
699 dev_priv->texture_size = init->texture_size;
700
701 DRM_GETSAREA();
702 if (!dev_priv->sarea) {
703 DRM_ERROR("could not find sarea!\n");
704 savage_do_cleanup_bci(dev);
705 return DRM_ERR(EINVAL);
706 }
707 if (init->status_offset != 0) {
708 dev_priv->status = drm_core_findmap(dev, init->status_offset);
709 if (!dev_priv->status) {
710 DRM_ERROR("could not find shadow status region!\n");
711 savage_do_cleanup_bci(dev);
712 return DRM_ERR(EINVAL);
713 }
714 } else {
715 dev_priv->status = NULL;
716 }
717 if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) {
718 dev->agp_buffer_map = drm_core_findmap(dev,
719 init->buffers_offset);
720 if (!dev->agp_buffer_map) {
721 DRM_ERROR("could not find DMA buffer region!\n");
722 savage_do_cleanup_bci(dev);
723 return DRM_ERR(EINVAL);
724 }
725 drm_core_ioremap(dev->agp_buffer_map, dev);
726 if (!dev->agp_buffer_map) {
727 DRM_ERROR("failed to ioremap DMA buffer region!\n");
728 savage_do_cleanup_bci(dev);
729 return DRM_ERR(ENOMEM);
730 }
731 }
732 if (init->agp_textures_offset) {
733 dev_priv->agp_textures =
734 drm_core_findmap(dev, init->agp_textures_offset);
735 if (!dev_priv->agp_textures) {
736 DRM_ERROR("could not find agp texture region!\n");
737 savage_do_cleanup_bci(dev);
738 return DRM_ERR(EINVAL);
739 }
740 } else {
741 dev_priv->agp_textures = NULL;
742 }
743
744 if (init->cmd_dma_offset) {
745 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
746 DRM_ERROR("command DMA not supported on "
747 "Savage3D/MX/IX.\n");
748 savage_do_cleanup_bci(dev);
749 return DRM_ERR(EINVAL);
750 }
751 if (dev->dma && dev->dma->buflist) {
752 DRM_ERROR("command and vertex DMA not supported "
753 "at the same time.\n");
754 savage_do_cleanup_bci(dev);
755 return DRM_ERR(EINVAL);
756 }
757 dev_priv->cmd_dma = drm_core_findmap(dev, init->cmd_dma_offset);
758 if (!dev_priv->cmd_dma) {
759 DRM_ERROR("could not find command DMA region!\n");
760 savage_do_cleanup_bci(dev);
761 return DRM_ERR(EINVAL);
762 }
763 if (dev_priv->dma_type == SAVAGE_DMA_AGP) {
764 if (dev_priv->cmd_dma->type != _DRM_AGP) {
765 DRM_ERROR("AGP command DMA region is not a "
766 "_DRM_AGP map!\n");
767 savage_do_cleanup_bci(dev);
768 return DRM_ERR(EINVAL);
769 }
770 drm_core_ioremap(dev_priv->cmd_dma, dev);
771 if (!dev_priv->cmd_dma->handle) {
772 DRM_ERROR("failed to ioremap command "
773 "DMA region!\n");
774 savage_do_cleanup_bci(dev);
775 return DRM_ERR(ENOMEM);
776 }
777 } else if (dev_priv->cmd_dma->type != _DRM_CONSISTENT) {
778 DRM_ERROR("PCI command DMA region is not a "
779 "_DRM_CONSISTENT map!\n");
780 savage_do_cleanup_bci(dev);
781 return DRM_ERR(EINVAL);
782 }
783 } else {
784 dev_priv->cmd_dma = NULL;
785 }
786
787 dev_priv->dma_flush = savage_dma_flush;
788 if (!dev_priv->cmd_dma) {
789 DRM_DEBUG("falling back to faked command DMA.\n");
790 dev_priv->fake_dma.offset = 0;
791 dev_priv->fake_dma.size = SAVAGE_FAKE_DMA_SIZE;
792 dev_priv->fake_dma.type = _DRM_SHM;
793 dev_priv->fake_dma.handle = drm_alloc(SAVAGE_FAKE_DMA_SIZE,
794 DRM_MEM_DRIVER);
795 if (!dev_priv->fake_dma.handle) {
796 DRM_ERROR("could not allocate faked DMA buffer!\n");
797 savage_do_cleanup_bci(dev);
798 return DRM_ERR(ENOMEM);
799 }
800 dev_priv->cmd_dma = &dev_priv->fake_dma;
801 dev_priv->dma_flush = savage_fake_dma_flush;
802 }
803
804 dev_priv->sarea_priv =
805 (drm_savage_sarea_t *)((uint8_t *)dev_priv->sarea->handle +
806 init->sarea_priv_offset);
807
808 /* setup bitmap descriptors */
809 {
810 unsigned int color_tile_format;
811 unsigned int depth_tile_format;
812 unsigned int front_stride, back_stride, depth_stride;
813 if (dev_priv->chipset <= S3_SAVAGE4) {
814 color_tile_format = dev_priv->fb_bpp == 16 ?
815 SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
816 depth_tile_format = dev_priv->depth_bpp == 16 ?
817 SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
818 } else {
819 color_tile_format = SAVAGE_BD_TILE_DEST;
820 depth_tile_format = SAVAGE_BD_TILE_DEST;
821 }
822 front_stride = dev_priv->front_pitch / (dev_priv->fb_bpp/8);
823 back_stride = dev_priv-> back_pitch / (dev_priv->fb_bpp/8);
824 depth_stride = dev_priv->depth_pitch / (dev_priv->depth_bpp/8);
825
826 dev_priv->front_bd = front_stride | SAVAGE_BD_BW_DISABLE |
827 (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
828 (color_tile_format << SAVAGE_BD_TILE_SHIFT);
829
830 dev_priv-> back_bd = back_stride | SAVAGE_BD_BW_DISABLE |
831 (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
832 (color_tile_format << SAVAGE_BD_TILE_SHIFT);
833
834 dev_priv->depth_bd = depth_stride | SAVAGE_BD_BW_DISABLE |
835 (dev_priv->depth_bpp << SAVAGE_BD_BPP_SHIFT) |
836 (depth_tile_format << SAVAGE_BD_TILE_SHIFT);
837 }
838
839 /* setup status and bci ptr */
840 dev_priv->event_counter = 0;
841 dev_priv->event_wrap = 0;
842 dev_priv->bci_ptr = (volatile uint32_t *)
843 ((uint8_t *)dev_priv->mmio->handle + SAVAGE_BCI_OFFSET);
844 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
845 dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S3D;
846 } else {
847 dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S4;
848 }
849 if (dev_priv->status != NULL) {
850 dev_priv->status_ptr =
851 (volatile uint32_t *)dev_priv->status->handle;
852 dev_priv->wait_fifo = savage_bci_wait_fifo_shadow;
853 dev_priv->wait_evnt = savage_bci_wait_event_shadow;
854 dev_priv->status_ptr[1023] = dev_priv->event_counter;
855 } else {
856 dev_priv->status_ptr = NULL;
857 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
858 dev_priv->wait_fifo = savage_bci_wait_fifo_s3d;
859 } else {
860 dev_priv->wait_fifo = savage_bci_wait_fifo_s4;
861 }
862 dev_priv->wait_evnt = savage_bci_wait_event_reg;
863 }
864
865 /* cliprect functions */
866 if (S3_SAVAGE3D_SERIES(dev_priv->chipset))
867 dev_priv->emit_clip_rect = savage_emit_clip_rect_s3d;
868 else
869 dev_priv->emit_clip_rect = savage_emit_clip_rect_s4;
870
871 if (savage_freelist_init(dev) < 0) {
872 DRM_ERROR("could not initialize freelist\n");
873 savage_do_cleanup_bci(dev);
874 return DRM_ERR(ENOMEM);
875 }
876
877 if (savage_dma_init(dev_priv) < 0) {
878 DRM_ERROR("could not initialize command DMA\n");
879 savage_do_cleanup_bci(dev);
880 return DRM_ERR(ENOMEM);
881 }
882
883 return 0;
884}
885
886int savage_do_cleanup_bci(drm_device_t *dev)
887{
888 drm_savage_private_t *dev_priv = dev->dev_private;
889
890 if (dev_priv->cmd_dma == &dev_priv->fake_dma) {
891 if (dev_priv->fake_dma.handle)
892 drm_free(dev_priv->fake_dma.handle,
893 SAVAGE_FAKE_DMA_SIZE, DRM_MEM_DRIVER);
894 } else if (dev_priv->cmd_dma && dev_priv->cmd_dma->handle &&
895 dev_priv->cmd_dma->type == _DRM_AGP &&
896 dev_priv->dma_type == SAVAGE_DMA_AGP)
897 drm_core_ioremapfree(dev_priv->cmd_dma, dev);
898
899 if (dev_priv->dma_type == SAVAGE_DMA_AGP &&
900 dev->agp_buffer_map && dev->agp_buffer_map->handle) {
901 drm_core_ioremapfree(dev->agp_buffer_map, dev);
902 /* make sure the next instance (which may be running
903 * in PCI mode) doesn't try to use an old
904 * agp_buffer_map. */
905 dev->agp_buffer_map = NULL;
906 }
907
908 if (dev_priv->dma_pages)
909 drm_free(dev_priv->dma_pages,
910 sizeof(drm_savage_dma_page_t)*dev_priv->nr_dma_pages,
911 DRM_MEM_DRIVER);
912
913 return 0;
914}
915
916static int savage_bci_init(DRM_IOCTL_ARGS)
917{
918 DRM_DEVICE;
919 drm_savage_init_t init;
920
921 LOCK_TEST_WITH_RETURN(dev, filp);
922
923 DRM_COPY_FROM_USER_IOCTL(init, (drm_savage_init_t __user *)data,
924 sizeof(init));
925
926 switch (init.func) {
927 case SAVAGE_INIT_BCI:
928 return savage_do_init_bci(dev, &init);
929 case SAVAGE_CLEANUP_BCI:
930 return savage_do_cleanup_bci(dev);
931 }
932
933 return DRM_ERR(EINVAL);
934}
935
936static int savage_bci_event_emit(DRM_IOCTL_ARGS)
937{
938 DRM_DEVICE;
939 drm_savage_private_t *dev_priv = dev->dev_private;
940 drm_savage_event_emit_t event;
941
942 DRM_DEBUG("\n");
943
944 LOCK_TEST_WITH_RETURN(dev, filp);
945
946 DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_emit_t __user *)data,
947 sizeof(event));
948
949 event.count = savage_bci_emit_event(dev_priv, event.flags);
950 event.count |= dev_priv->event_wrap << 16;
951 DRM_COPY_TO_USER_IOCTL(&((drm_savage_event_emit_t __user *)data)->count,
952 event.count, sizeof(event.count));
953 return 0;
954}
955
956static int savage_bci_event_wait(DRM_IOCTL_ARGS)
957{
958 DRM_DEVICE;
959 drm_savage_private_t *dev_priv = dev->dev_private;
960 drm_savage_event_wait_t event;
961 unsigned int event_e, hw_e;
962 unsigned int event_w, hw_w;
963
964 DRM_DEBUG("\n");
965
966 DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_wait_t __user *)data,
967 sizeof(event));
968
969 UPDATE_EVENT_COUNTER();
970 if (dev_priv->status_ptr)
971 hw_e = dev_priv->status_ptr[1] & 0xffff;
972 else
973 hw_e = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
974 hw_w = dev_priv->event_wrap;
975 if (hw_e > dev_priv->event_counter)
976 hw_w--; /* hardware hasn't passed the last wrap yet */
977
978 event_e = event.count & 0xffff;
979 event_w = event.count >> 16;
980
981 /* Don't need to wait if
982 * - event counter wrapped since the event was emitted or
983 * - the hardware has advanced up to or over the event to wait for.
984 */
985 if (event_w < hw_w || (event_w == hw_w && event_e <= hw_e) )
986 return 0;
987 else
988 return dev_priv->wait_evnt(dev_priv, event_e);
989}
990
991/*
992 * DMA buffer management
993 */
994
995static int savage_bci_get_buffers(DRMFILE filp, drm_device_t *dev, drm_dma_t *d)
996{
997 drm_buf_t *buf;
998 int i;
999
1000 for (i = d->granted_count; i < d->request_count; i++) {
1001 buf = savage_freelist_get(dev);
1002 if (!buf)
1003 return DRM_ERR(EAGAIN);
1004
1005 buf->filp = filp;
1006
1007 if (DRM_COPY_TO_USER(&d->request_indices[i],
1008 &buf->idx, sizeof(buf->idx)))
1009 return DRM_ERR(EFAULT);
1010 if (DRM_COPY_TO_USER(&d->request_sizes[i],
1011 &buf->total, sizeof(buf->total)))
1012 return DRM_ERR(EFAULT);
1013
1014 d->granted_count++;
1015 }
1016 return 0;
1017}
1018
1019int savage_bci_buffers(DRM_IOCTL_ARGS)
1020{
1021 DRM_DEVICE;
1022 drm_device_dma_t *dma = dev->dma;
1023 drm_dma_t d;
1024 int ret = 0;
1025
1026 LOCK_TEST_WITH_RETURN(dev, filp);
1027
1028 DRM_COPY_FROM_USER_IOCTL(d, (drm_dma_t __user *)data, sizeof(d));
1029
1030 /* Please don't send us buffers.
1031 */
1032 if (d.send_count != 0) {
1033 DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
1034 DRM_CURRENTPID, d.send_count);
1035 return DRM_ERR(EINVAL);
1036 }
1037
1038 /* We'll send you buffers.
1039 */
1040 if (d.request_count < 0 || d.request_count > dma->buf_count) {
1041 DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
1042 DRM_CURRENTPID, d.request_count, dma->buf_count);
1043 return DRM_ERR(EINVAL);
1044 }
1045
1046 d.granted_count = 0;
1047
1048 if (d.request_count) {
1049 ret = savage_bci_get_buffers(filp, dev, &d);
1050 }
1051
1052 DRM_COPY_TO_USER_IOCTL((drm_dma_t __user *)data, d, sizeof(d));
1053
1054 return ret;
1055}
1056
1057void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp) {
1058 drm_device_dma_t *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 drm_buf_t *buf = dma->buflist[i];
1073 drm_savage_buf_priv_t *buf_priv = buf->dev_private;
1074
1075 if (buf->filp == filp && 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, filp);
1086}
1087
1088
1089drm_ioctl_desc_t savage_ioctls[] = {
1090 [DRM_IOCTL_NR(DRM_SAVAGE_BCI_INIT)] = {savage_bci_init, 1, 1},
1091 [DRM_IOCTL_NR(DRM_SAVAGE_BCI_CMDBUF)] = {savage_bci_cmdbuf, 1, 0},
1092 [DRM_IOCTL_NR(DRM_SAVAGE_BCI_EVENT_EMIT)] = {savage_bci_event_emit, 1, 0},
1093 [DRM_IOCTL_NR(DRM_SAVAGE_BCI_EVENT_WAIT)] = {savage_bci_event_wait, 1, 0},
1094};
1095
1096int savage_max_ioctl = DRM_ARRAY_SIZE(savage_ioctls);
diff --git a/drivers/char/drm/savage_drm.h b/drivers/char/drm/savage_drm.h
new file mode 100644
index 000000000000..6526c9aa7589
--- /dev/null
+++ b/drivers/char/drm/savage_drm.h
@@ -0,0 +1,209 @@
1/* savage_drm.h -- Public 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_DRM_H__
27#define __SAVAGE_DRM_H__
28
29#ifndef __SAVAGE_SAREA_DEFINES__
30#define __SAVAGE_SAREA_DEFINES__
31
32/* 2 heaps (1 for card, 1 for agp), each divided into upto 128
33 * regions, subject to a minimum region size of (1<<16) == 64k.
34 *
35 * Clients may subdivide regions internally, but when sharing between
36 * clients, the region size is the minimum granularity.
37 */
38
39#define SAVAGE_CARD_HEAP 0
40#define SAVAGE_AGP_HEAP 1
41#define SAVAGE_NR_TEX_HEAPS 2
42#define SAVAGE_NR_TEX_REGIONS 16
43#define SAVAGE_LOG_MIN_TEX_REGION_SIZE 16
44
45#endif /* __SAVAGE_SAREA_DEFINES__ */
46
47typedef struct _drm_savage_sarea {
48 /* LRU lists for texture memory in agp space and on the card.
49 */
50 drm_tex_region_t texList[SAVAGE_NR_TEX_HEAPS][SAVAGE_NR_TEX_REGIONS+1];
51 unsigned int texAge[SAVAGE_NR_TEX_HEAPS];
52
53 /* Mechanism to validate card state.
54 */
55 int ctxOwner;
56} drm_savage_sarea_t, *drm_savage_sarea_ptr;
57
58/* Savage-specific ioctls
59 */
60#define DRM_SAVAGE_BCI_INIT 0x00
61#define DRM_SAVAGE_BCI_CMDBUF 0x01
62#define DRM_SAVAGE_BCI_EVENT_EMIT 0x02
63#define DRM_SAVAGE_BCI_EVENT_WAIT 0x03
64
65#define DRM_IOCTL_SAVAGE_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_INIT, drm_savage_init_t)
66#define DRM_IOCTL_SAVAGE_CMDBUF DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_CMDBUF, drm_savage_cmdbuf_t)
67#define DRM_IOCTL_SAVAGE_EVENT_EMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_EMIT, drm_savage_event_emit_t)
68#define DRM_IOCTL_SAVAGE_EVENT_WAIT DRM_IOW( DRM_COMMAND_BASE + DRM_SAVAGE_BCI_EVENT_WAIT, drm_savage_event_wait_t)
69
70#define SAVAGE_DMA_PCI 1
71#define SAVAGE_DMA_AGP 3
72typedef struct drm_savage_init {
73 enum {
74 SAVAGE_INIT_BCI = 1,
75 SAVAGE_CLEANUP_BCI = 2
76 } func;
77 unsigned int sarea_priv_offset;
78
79 /* some parameters */
80 unsigned int cob_size;
81 unsigned int bci_threshold_lo, bci_threshold_hi;
82 unsigned int dma_type;
83
84 /* frame buffer layout */
85 unsigned int fb_bpp;
86 unsigned int front_offset, front_pitch;
87 unsigned int back_offset, back_pitch;
88 unsigned int depth_bpp;
89 unsigned int depth_offset, depth_pitch;
90
91 /* local textures */
92 unsigned int texture_offset;
93 unsigned int texture_size;
94
95 /* physical locations of non-permanent maps */
96 unsigned long status_offset;
97 unsigned long buffers_offset;
98 unsigned long agp_textures_offset;
99 unsigned long cmd_dma_offset;
100} drm_savage_init_t;
101
102typedef union drm_savage_cmd_header drm_savage_cmd_header_t;
103typedef struct drm_savage_cmdbuf {
104 /* command buffer in client's address space */
105 drm_savage_cmd_header_t __user *cmd_addr;
106 unsigned int size; /* size of the command buffer in 64bit units */
107
108 unsigned int dma_idx; /* DMA buffer index to use */
109 int discard; /* discard DMA buffer when done */
110 /* vertex buffer in client's address space */
111 unsigned int __user *vb_addr;
112 unsigned int vb_size; /* size of client vertex buffer in bytes */
113 unsigned int vb_stride; /* stride of vertices in 32bit words */
114 /* boxes in client's address space */
115 drm_clip_rect_t __user *box_addr;
116 unsigned int nbox; /* number of clipping boxes */
117} drm_savage_cmdbuf_t;
118
119#define SAVAGE_WAIT_2D 0x1 /* wait for 2D idle before updating event tag */
120#define SAVAGE_WAIT_3D 0x2 /* wait for 3D idle before updating event tag */
121#define SAVAGE_WAIT_IRQ 0x4 /* emit or wait for IRQ, not implemented yet */
122typedef struct drm_savage_event {
123 unsigned int count;
124 unsigned int flags;
125} drm_savage_event_emit_t, drm_savage_event_wait_t;
126
127/* Commands for the cmdbuf ioctl
128 */
129#define SAVAGE_CMD_STATE 0 /* a range of state registers */
130#define SAVAGE_CMD_DMA_PRIM 1 /* vertices from DMA buffer */
131#define SAVAGE_CMD_VB_PRIM 2 /* vertices from client vertex buffer */
132#define SAVAGE_CMD_DMA_IDX 3 /* indexed vertices from DMA buffer */
133#define SAVAGE_CMD_VB_IDX 4 /* indexed vertices client vertex buffer */
134#define SAVAGE_CMD_CLEAR 5 /* clear buffers */
135#define SAVAGE_CMD_SWAP 6 /* swap buffers */
136
137/* Primitive types
138*/
139#define SAVAGE_PRIM_TRILIST 0 /* triangle list */
140#define SAVAGE_PRIM_TRISTRIP 1 /* triangle strip */
141#define SAVAGE_PRIM_TRIFAN 2 /* triangle fan */
142#define SAVAGE_PRIM_TRILIST_201 3 /* reorder verts for correct flat
143 * shading on s3d */
144
145/* Skip flags (vertex format)
146 */
147#define SAVAGE_SKIP_Z 0x01
148#define SAVAGE_SKIP_W 0x02
149#define SAVAGE_SKIP_C0 0x04
150#define SAVAGE_SKIP_C1 0x08
151#define SAVAGE_SKIP_S0 0x10
152#define SAVAGE_SKIP_T0 0x20
153#define SAVAGE_SKIP_ST0 0x30
154#define SAVAGE_SKIP_S1 0x40
155#define SAVAGE_SKIP_T1 0x80
156#define SAVAGE_SKIP_ST1 0xc0
157#define SAVAGE_SKIP_ALL_S3D 0x3f
158#define SAVAGE_SKIP_ALL_S4 0xff
159
160/* Buffer names for clear command
161 */
162#define SAVAGE_FRONT 0x1
163#define SAVAGE_BACK 0x2
164#define SAVAGE_DEPTH 0x4
165
166/* 64-bit command header
167 */
168union drm_savage_cmd_header {
169 struct {
170 unsigned char cmd; /* command */
171 unsigned char pad0;
172 unsigned short pad1;
173 unsigned short pad2;
174 unsigned short pad3;
175 } cmd; /* generic */
176 struct {
177 unsigned char cmd;
178 unsigned char global; /* need idle engine? */
179 unsigned short count; /* number of consecutive registers */
180 unsigned short start; /* first register */
181 unsigned short pad3;
182 } state; /* SAVAGE_CMD_STATE */
183 struct {
184 unsigned char cmd;
185 unsigned char prim; /* primitive type */
186 unsigned short skip; /* vertex format (skip flags) */
187 unsigned short count; /* number of vertices */
188 unsigned short start; /* first vertex in DMA/vertex buffer */
189 } prim; /* SAVAGE_CMD_DMA_PRIM, SAVAGE_CMD_VB_PRIM */
190 struct {
191 unsigned char cmd;
192 unsigned char prim;
193 unsigned short skip;
194 unsigned short count; /* number of indices that follow */
195 unsigned short pad3;
196 } idx; /* SAVAGE_CMD_DMA_IDX, SAVAGE_CMD_VB_IDX */
197 struct {
198 unsigned char cmd;
199 unsigned char pad0;
200 unsigned short pad1;
201 unsigned int flags;
202 } clear0; /* SAVAGE_CMD_CLEAR */
203 struct {
204 unsigned int mask;
205 unsigned int value;
206 } clear1; /* SAVAGE_CMD_CLEAR data */
207};
208
209#endif
diff --git a/drivers/char/drm/savage_drv.c b/drivers/char/drm/savage_drv.c
new file mode 100644
index 000000000000..ac8d270427ca
--- /dev/null
+++ b/drivers/char/drm/savage_drv.c
@@ -0,0 +1,112 @@
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 <linux/config.h>
27#include "drmP.h"
28#include "savage_drm.h"
29#include "savage_drv.h"
30
31#include "drm_pciids.h"
32
33static int postinit( struct drm_device *dev, unsigned long flags )
34{
35 DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d: %s\n",
36 DRIVER_NAME,
37 DRIVER_MAJOR,
38 DRIVER_MINOR,
39 DRIVER_PATCHLEVEL,
40 DRIVER_DATE,
41 dev->primary.minor,
42 pci_pretty_name(dev->pdev)
43 );
44 return 0;
45}
46
47static int version( drm_version_t *version )
48{
49 int len;
50
51 version->version_major = DRIVER_MAJOR;
52 version->version_minor = DRIVER_MINOR;
53 version->version_patchlevel = DRIVER_PATCHLEVEL;
54 DRM_COPY( version->name, DRIVER_NAME );
55 DRM_COPY( version->date, DRIVER_DATE );
56 DRM_COPY( version->desc, DRIVER_DESC );
57 return 0;
58}
59
60static struct pci_device_id pciidlist[] = {
61 savage_PCI_IDS
62};
63
64extern drm_ioctl_desc_t savage_ioctls[];
65extern int savage_max_ioctl;
66
67static struct drm_driver driver = {
68 .driver_features =
69 DRIVER_USE_AGP | DRIVER_USE_MTRR |
70 DRIVER_HAVE_DMA | DRIVER_PCI_DMA,
71 .dev_priv_size = sizeof(drm_savage_buf_priv_t),
72 .preinit = savage_preinit,
73 .postinit = postinit,
74 .postcleanup = savage_postcleanup,
75 .reclaim_buffers = savage_reclaim_buffers,
76 .get_map_ofs = drm_core_get_map_ofs,
77 .get_reg_ofs = drm_core_get_reg_ofs,
78 .version = version,
79 .ioctls = savage_ioctls,
80 .dma_ioctl = savage_bci_buffers,
81 .fops = {
82 .owner = THIS_MODULE,
83 .open = drm_open,
84 .release = drm_release,
85 .ioctl = drm_ioctl,
86 .mmap = drm_mmap,
87 .poll = drm_poll,
88 .fasync = drm_fasync,
89 },
90 .pci_driver = {
91 .name = DRIVER_NAME,
92 .id_table = pciidlist,
93 }
94};
95
96static int __init savage_init(void)
97{
98 driver.num_ioctls = savage_max_ioctl;
99 return drm_init(&driver);
100}
101
102static void __exit savage_exit(void)
103{
104 drm_exit(&driver);
105}
106
107module_init(savage_init);
108module_exit(savage_exit);
109
110MODULE_AUTHOR( DRIVER_AUTHOR );
111MODULE_DESCRIPTION( DRIVER_DESC );
112MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/char/drm/savage_drv.h b/drivers/char/drm/savage_drv.h
new file mode 100644
index 000000000000..a45434944658
--- /dev/null
+++ b/drivers/char/drm/savage_drv.h
@@ -0,0 +1,579 @@
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 drm_buf_t *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
107#define S3_SAVAGE3D_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX))
108
109#define S3_SAVAGE4_SERIES(chip) ((chip==S3_SAVAGE4) \
110 || (chip==S3_PROSAVAGE) \
111 || (chip==S3_TWISTER) \
112 || (chip==S3_PROSAVAGEDDR))
113
114#define S3_SAVAGE_MOBILE_SERIES(chip) ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE))
115
116#define S3_SAVAGE_SERIES(chip) ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE2000))
117
118#define S3_MOBILE_TWISTER_SERIES(chip) ((chip==S3_TWISTER) \
119 ||(chip==S3_PROSAVAGEDDR))
120
121/* flags */
122#define SAVAGE_IS_AGP 1
123
124typedef struct drm_savage_private {
125 drm_savage_sarea_t *sarea_priv;
126
127 drm_savage_buf_priv_t head, tail;
128
129 /* who am I? */
130 enum savage_family chipset;
131
132 unsigned int cob_size;
133 unsigned int bci_threshold_lo, bci_threshold_hi;
134 unsigned int dma_type;
135
136 /* frame buffer layout */
137 unsigned int fb_bpp;
138 unsigned int front_offset, front_pitch;
139 unsigned int back_offset, back_pitch;
140 unsigned int depth_bpp;
141 unsigned int depth_offset, depth_pitch;
142
143 /* bitmap descriptors for swap and clear */
144 unsigned int front_bd, back_bd, depth_bd;
145
146 /* local textures */
147 unsigned int texture_offset;
148 unsigned int texture_size;
149
150 /* memory regions in physical memory */
151 drm_local_map_t *sarea;
152 drm_local_map_t *mmio;
153 drm_local_map_t *fb;
154 drm_local_map_t *aperture;
155 drm_local_map_t *status;
156 drm_local_map_t *agp_textures;
157 drm_local_map_t *cmd_dma;
158 drm_local_map_t fake_dma;
159
160 struct {
161 int handle;
162 unsigned long base, size;
163 } mtrr[3];
164
165 /* BCI and status-related stuff */
166 volatile uint32_t *status_ptr, *bci_ptr;
167 uint32_t status_used_mask;
168 uint16_t event_counter;
169 unsigned int event_wrap;
170
171 /* Savage4 command DMA */
172 drm_savage_dma_page_t *dma_pages;
173 unsigned int nr_dma_pages, first_dma_page, current_dma_page;
174 drm_savage_age_t last_dma_age;
175
176 /* saved hw state for global/local check on S3D */
177 uint32_t hw_draw_ctrl, hw_zbuf_ctrl;
178 /* and for scissors (global, so don't emit if not changed) */
179 uint32_t hw_scissors_start, hw_scissors_end;
180
181 drm_savage_state_t state;
182
183 /* after emitting a wait cmd Savage3D needs 63 nops before next DMA */
184 unsigned int waiting;
185
186 /* config/hardware-dependent function pointers */
187 int (*wait_fifo)(struct drm_savage_private *dev_priv, unsigned int n);
188 int (*wait_evnt)(struct drm_savage_private *dev_priv, uint16_t e);
189 /* Err, there is a macro wait_event in include/linux/wait.h.
190 * Avoid unwanted macro expansion. */
191 void (*emit_clip_rect)(struct drm_savage_private *dev_priv,
192 drm_clip_rect_t *pbox);
193 void (*dma_flush)(struct drm_savage_private *dev_priv);
194} drm_savage_private_t;
195
196/* ioctls */
197extern int savage_bci_cmdbuf(DRM_IOCTL_ARGS);
198extern int savage_bci_buffers(DRM_IOCTL_ARGS);
199
200/* BCI functions */
201extern uint16_t savage_bci_emit_event(drm_savage_private_t *dev_priv,
202 unsigned int flags);
203extern void savage_freelist_put(drm_device_t *dev, drm_buf_t *buf);
204extern void savage_dma_reset(drm_savage_private_t *dev_priv);
205extern void savage_dma_wait(drm_savage_private_t *dev_priv, unsigned int page);
206extern uint32_t *savage_dma_alloc(drm_savage_private_t *dev_priv,
207 unsigned int n);
208extern int savage_preinit(drm_device_t *dev, unsigned long chipset);
209extern int savage_postcleanup(drm_device_t *dev);
210extern int savage_do_cleanup_bci(drm_device_t *dev);
211extern void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp);
212
213/* state functions */
214extern void savage_emit_clip_rect_s3d(drm_savage_private_t *dev_priv,
215 drm_clip_rect_t *pbox);
216extern void savage_emit_clip_rect_s4(drm_savage_private_t *dev_priv,
217 drm_clip_rect_t *pbox);
218
219#define SAVAGE_FB_SIZE_S3 0x01000000 /* 16MB */
220#define SAVAGE_FB_SIZE_S4 0x02000000 /* 32MB */
221#define SAVAGE_MMIO_SIZE 0x00080000 /* 512kB */
222#define SAVAGE_APERTURE_OFFSET 0x02000000 /* 32MB */
223#define SAVAGE_APERTURE_SIZE 0x05000000 /* 5 tiled surfaces, 16MB each */
224
225#define SAVAGE_BCI_OFFSET 0x00010000 /* offset of the BCI region
226 * inside the MMIO region */
227#define SAVAGE_BCI_FIFO_SIZE 32 /* number of entries in on-chip
228 * BCI FIFO */
229
230/*
231 * MMIO registers
232 */
233#define SAVAGE_STATUS_WORD0 0x48C00
234#define SAVAGE_STATUS_WORD1 0x48C04
235#define SAVAGE_ALT_STATUS_WORD0 0x48C60
236
237#define SAVAGE_FIFO_USED_MASK_S3D 0x0001ffff
238#define SAVAGE_FIFO_USED_MASK_S4 0x001fffff
239
240/* Copied from savage_bci.h in the 2D driver with some renaming. */
241
242/* Bitmap descriptors */
243#define SAVAGE_BD_STRIDE_SHIFT 0
244#define SAVAGE_BD_BPP_SHIFT 16
245#define SAVAGE_BD_TILE_SHIFT 24
246#define SAVAGE_BD_BW_DISABLE (1<<28)
247/* common: */
248#define SAVAGE_BD_TILE_LINEAR 0
249/* savage4, MX, IX, 3D */
250#define SAVAGE_BD_TILE_16BPP 2
251#define SAVAGE_BD_TILE_32BPP 3
252/* twister, prosavage, DDR, supersavage, 2000 */
253#define SAVAGE_BD_TILE_DEST 1
254#define SAVAGE_BD_TILE_TEXTURE 2
255/* GBD - BCI enable */
256/* savage4, MX, IX, 3D */
257#define SAVAGE_GBD_BCI_ENABLE 8
258/* twister, prosavage, DDR, supersavage, 2000 */
259#define SAVAGE_GBD_BCI_ENABLE_TWISTER 0
260
261#define SAVAGE_GBD_BIG_ENDIAN 4
262#define SAVAGE_GBD_LITTLE_ENDIAN 0
263#define SAVAGE_GBD_64 1
264
265/* Global Bitmap Descriptor */
266#define SAVAGE_BCI_GLB_BD_LOW 0x8168
267#define SAVAGE_BCI_GLB_BD_HIGH 0x816C
268
269/*
270 * BCI registers
271 */
272/* Savage4/Twister/ProSavage 3D registers */
273#define SAVAGE_DRAWLOCALCTRL_S4 0x1e
274#define SAVAGE_TEXPALADDR_S4 0x1f
275#define SAVAGE_TEXCTRL0_S4 0x20
276#define SAVAGE_TEXCTRL1_S4 0x21
277#define SAVAGE_TEXADDR0_S4 0x22
278#define SAVAGE_TEXADDR1_S4 0x23
279#define SAVAGE_TEXBLEND0_S4 0x24
280#define SAVAGE_TEXBLEND1_S4 0x25
281#define SAVAGE_TEXXPRCLR_S4 0x26 /* never used */
282#define SAVAGE_TEXDESCR_S4 0x27
283#define SAVAGE_FOGTABLE_S4 0x28
284#define SAVAGE_FOGCTRL_S4 0x30
285#define SAVAGE_STENCILCTRL_S4 0x31
286#define SAVAGE_ZBUFCTRL_S4 0x32
287#define SAVAGE_ZBUFOFF_S4 0x33
288#define SAVAGE_DESTCTRL_S4 0x34
289#define SAVAGE_DRAWCTRL0_S4 0x35
290#define SAVAGE_DRAWCTRL1_S4 0x36
291#define SAVAGE_ZWATERMARK_S4 0x37
292#define SAVAGE_DESTTEXRWWATERMARK_S4 0x38
293#define SAVAGE_TEXBLENDCOLOR_S4 0x39
294/* Savage3D/MX/IX 3D registers */
295#define SAVAGE_TEXPALADDR_S3D 0x18
296#define SAVAGE_TEXXPRCLR_S3D 0x19 /* never used */
297#define SAVAGE_TEXADDR_S3D 0x1A
298#define SAVAGE_TEXDESCR_S3D 0x1B
299#define SAVAGE_TEXCTRL_S3D 0x1C
300#define SAVAGE_FOGTABLE_S3D 0x20
301#define SAVAGE_FOGCTRL_S3D 0x30
302#define SAVAGE_DRAWCTRL_S3D 0x31
303#define SAVAGE_ZBUFCTRL_S3D 0x32
304#define SAVAGE_ZBUFOFF_S3D 0x33
305#define SAVAGE_DESTCTRL_S3D 0x34
306#define SAVAGE_SCSTART_S3D 0x35
307#define SAVAGE_SCEND_S3D 0x36
308#define SAVAGE_ZWATERMARK_S3D 0x37
309#define SAVAGE_DESTTEXRWWATERMARK_S3D 0x38
310/* common stuff */
311#define SAVAGE_VERTBUFADDR 0x3e
312#define SAVAGE_BITPLANEWTMASK 0xd7
313#define SAVAGE_DMABUFADDR 0x51
314
315/* texture enable bits (needed for tex addr checking) */
316#define SAVAGE_TEXCTRL_TEXEN_MASK 0x00010000 /* S3D */
317#define SAVAGE_TEXDESCR_TEX0EN_MASK 0x02000000 /* S4 */
318#define SAVAGE_TEXDESCR_TEX1EN_MASK 0x04000000 /* S4 */
319
320/* Global fields in Savage4/Twister/ProSavage 3D registers:
321 *
322 * All texture registers and DrawLocalCtrl are local. All other
323 * registers are global. */
324
325/* Global fields in Savage3D/MX/IX 3D registers:
326 *
327 * All texture registers are local. DrawCtrl and ZBufCtrl are
328 * partially local. All other registers are global.
329 *
330 * DrawCtrl global fields: cullMode, alphaTestCmpFunc, alphaTestEn, alphaRefVal
331 * ZBufCtrl global fields: zCmpFunc, zBufEn
332 */
333#define SAVAGE_DRAWCTRL_S3D_GLOBAL 0x03f3c00c
334#define SAVAGE_ZBUFCTRL_S3D_GLOBAL 0x00000027
335
336/* Masks for scissor bits (drawCtrl[01] on s4, scissorStart/End on s3d)
337 */
338#define SAVAGE_SCISSOR_MASK_S4 0x00fff7ff
339#define SAVAGE_SCISSOR_MASK_S3D 0x07ff07ff
340
341/*
342 * BCI commands
343 */
344#define BCI_CMD_NOP 0x40000000
345#define BCI_CMD_RECT 0x48000000
346#define BCI_CMD_RECT_XP 0x01000000
347#define BCI_CMD_RECT_YP 0x02000000
348#define BCI_CMD_SCANLINE 0x50000000
349#define BCI_CMD_LINE 0x5C000000
350#define BCI_CMD_LINE_LAST_PIXEL 0x58000000
351#define BCI_CMD_BYTE_TEXT 0x63000000
352#define BCI_CMD_NT_BYTE_TEXT 0x67000000
353#define BCI_CMD_BIT_TEXT 0x6C000000
354#define BCI_CMD_GET_ROP(cmd) (((cmd) >> 16) & 0xFF)
355#define BCI_CMD_SET_ROP(cmd, rop) ((cmd) |= ((rop & 0xFF) << 16))
356#define BCI_CMD_SEND_COLOR 0x00008000
357
358#define BCI_CMD_CLIP_NONE 0x00000000
359#define BCI_CMD_CLIP_CURRENT 0x00002000
360#define BCI_CMD_CLIP_LR 0x00004000
361#define BCI_CMD_CLIP_NEW 0x00006000
362
363#define BCI_CMD_DEST_GBD 0x00000000
364#define BCI_CMD_DEST_PBD 0x00000800
365#define BCI_CMD_DEST_PBD_NEW 0x00000C00
366#define BCI_CMD_DEST_SBD 0x00001000
367#define BCI_CMD_DEST_SBD_NEW 0x00001400
368
369#define BCI_CMD_SRC_TRANSPARENT 0x00000200
370#define BCI_CMD_SRC_SOLID 0x00000000
371#define BCI_CMD_SRC_GBD 0x00000020
372#define BCI_CMD_SRC_COLOR 0x00000040
373#define BCI_CMD_SRC_MONO 0x00000060
374#define BCI_CMD_SRC_PBD_COLOR 0x00000080
375#define BCI_CMD_SRC_PBD_MONO 0x000000A0
376#define BCI_CMD_SRC_PBD_COLOR_NEW 0x000000C0
377#define BCI_CMD_SRC_PBD_MONO_NEW 0x000000E0
378#define BCI_CMD_SRC_SBD_COLOR 0x00000100
379#define BCI_CMD_SRC_SBD_MONO 0x00000120
380#define BCI_CMD_SRC_SBD_COLOR_NEW 0x00000140
381#define BCI_CMD_SRC_SBD_MONO_NEW 0x00000160
382
383#define BCI_CMD_PAT_TRANSPARENT 0x00000010
384#define BCI_CMD_PAT_NONE 0x00000000
385#define BCI_CMD_PAT_COLOR 0x00000002
386#define BCI_CMD_PAT_MONO 0x00000003
387#define BCI_CMD_PAT_PBD_COLOR 0x00000004
388#define BCI_CMD_PAT_PBD_MONO 0x00000005
389#define BCI_CMD_PAT_PBD_COLOR_NEW 0x00000006
390#define BCI_CMD_PAT_PBD_MONO_NEW 0x00000007
391#define BCI_CMD_PAT_SBD_COLOR 0x00000008
392#define BCI_CMD_PAT_SBD_MONO 0x00000009
393#define BCI_CMD_PAT_SBD_COLOR_NEW 0x0000000A
394#define BCI_CMD_PAT_SBD_MONO_NEW 0x0000000B
395
396#define BCI_BD_BW_DISABLE 0x10000000
397#define BCI_BD_TILE_MASK 0x03000000
398#define BCI_BD_TILE_NONE 0x00000000
399#define BCI_BD_TILE_16 0x02000000
400#define BCI_BD_TILE_32 0x03000000
401#define BCI_BD_GET_BPP(bd) (((bd) >> 16) & 0xFF)
402#define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16))
403#define BCI_BD_GET_STRIDE(bd) ((bd) & 0xFFFF)
404#define BCI_BD_SET_STRIDE(bd, st) ((bd) |= ((st) & 0xFFFF))
405
406#define BCI_CMD_SET_REGISTER 0x96000000
407
408#define BCI_CMD_WAIT 0xC0000000
409#define BCI_CMD_WAIT_3D 0x00010000
410#define BCI_CMD_WAIT_2D 0x00020000
411
412#define BCI_CMD_UPDATE_EVENT_TAG 0x98000000
413
414#define BCI_CMD_DRAW_PRIM 0x80000000
415#define BCI_CMD_DRAW_INDEXED_PRIM 0x88000000
416#define BCI_CMD_DRAW_CONT 0x01000000
417#define BCI_CMD_DRAW_TRILIST 0x00000000
418#define BCI_CMD_DRAW_TRISTRIP 0x02000000
419#define BCI_CMD_DRAW_TRIFAN 0x04000000
420#define BCI_CMD_DRAW_SKIPFLAGS 0x000000ff
421#define BCI_CMD_DRAW_NO_Z 0x00000001
422#define BCI_CMD_DRAW_NO_W 0x00000002
423#define BCI_CMD_DRAW_NO_CD 0x00000004
424#define BCI_CMD_DRAW_NO_CS 0x00000008
425#define BCI_CMD_DRAW_NO_U0 0x00000010
426#define BCI_CMD_DRAW_NO_V0 0x00000020
427#define BCI_CMD_DRAW_NO_UV0 0x00000030
428#define BCI_CMD_DRAW_NO_U1 0x00000040
429#define BCI_CMD_DRAW_NO_V1 0x00000080
430#define BCI_CMD_DRAW_NO_UV1 0x000000c0
431
432#define BCI_CMD_DMA 0xa8000000
433
434#define BCI_W_H(w, h) ((((h) << 16) | (w)) & 0x0FFF0FFF)
435#define BCI_X_Y(x, y) ((((y) << 16) | (x)) & 0x0FFF0FFF)
436#define BCI_X_W(x, y) ((((w) << 16) | (x)) & 0x0FFF0FFF)
437#define BCI_CLIP_LR(l, r) ((((r) << 16) | (l)) & 0x0FFF0FFF)
438#define BCI_CLIP_TL(t, l) ((((t) << 16) | (l)) & 0x0FFF0FFF)
439#define BCI_CLIP_BR(b, r) ((((b) << 16) | (r)) & 0x0FFF0FFF)
440
441#define BCI_LINE_X_Y(x, y) (((y) << 16) | ((x) & 0xFFFF))
442#define BCI_LINE_STEPS(diag, axi) (((axi) << 16) | ((diag) & 0xFFFF))
443#define BCI_LINE_MISC(maj, ym, xp, yp, err) \
444 (((maj) & 0x1FFF) | \
445 ((ym) ? 1<<13 : 0) | \
446 ((xp) ? 1<<14 : 0) | \
447 ((yp) ? 1<<15 : 0) | \
448 ((err) << 16))
449
450/*
451 * common commands
452 */
453#define BCI_SET_REGISTERS( first, n ) \
454 BCI_WRITE(BCI_CMD_SET_REGISTER | \
455 ((uint32_t)(n) & 0xff) << 16 | \
456 ((uint32_t)(first) & 0xffff))
457#define DMA_SET_REGISTERS( first, n ) \
458 DMA_WRITE(BCI_CMD_SET_REGISTER | \
459 ((uint32_t)(n) & 0xff) << 16 | \
460 ((uint32_t)(first) & 0xffff))
461
462#define BCI_DRAW_PRIMITIVE(n, type, skip) \
463 BCI_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \
464 ((n) << 16))
465#define DMA_DRAW_PRIMITIVE(n, type, skip) \
466 DMA_WRITE(BCI_CMD_DRAW_PRIM | (type) | (skip) | \
467 ((n) << 16))
468
469#define BCI_DRAW_INDICES_S3D(n, type, i0) \
470 BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \
471 ((n) << 16) | (i0))
472
473#define BCI_DRAW_INDICES_S4(n, type, skip) \
474 BCI_WRITE(BCI_CMD_DRAW_INDEXED_PRIM | (type) | \
475 (skip) | ((n) << 16))
476
477#define BCI_DMA(n) \
478 BCI_WRITE(BCI_CMD_DMA | (((n) >> 1) - 1))
479
480/*
481 * access to MMIO
482 */
483#define SAVAGE_READ(reg) DRM_READ32( dev_priv->mmio, (reg) )
484#define SAVAGE_WRITE(reg) DRM_WRITE32( dev_priv->mmio, (reg) )
485
486/*
487 * access to the burst command interface (BCI)
488 */
489#define SAVAGE_BCI_DEBUG 1
490
491#define BCI_LOCALS volatile uint32_t *bci_ptr;
492
493#define BEGIN_BCI( n ) do { \
494 dev_priv->wait_fifo(dev_priv, (n)); \
495 bci_ptr = dev_priv->bci_ptr; \
496} while(0)
497
498#define BCI_WRITE( val ) *bci_ptr++ = (uint32_t)(val)
499
500#define BCI_COPY_FROM_USER(src,n) do { \
501 unsigned int i; \
502 for (i = 0; i < n; ++i) { \
503 uint32_t val; \
504 DRM_GET_USER_UNCHECKED(val, &((uint32_t*)(src))[i]); \
505 BCI_WRITE(val); \
506 } \
507} while(0)
508
509/*
510 * command DMA support
511 */
512#define SAVAGE_DMA_DEBUG 1
513
514#define DMA_LOCALS uint32_t *dma_ptr;
515
516#define BEGIN_DMA( n ) do { \
517 unsigned int cur = dev_priv->current_dma_page; \
518 unsigned int rest = SAVAGE_DMA_PAGE_SIZE - \
519 dev_priv->dma_pages[cur].used; \
520 if ((n) > rest) { \
521 dma_ptr = savage_dma_alloc(dev_priv, (n)); \
522 } else { /* fast path for small allocations */ \
523 dma_ptr = (uint32_t *)dev_priv->cmd_dma->handle + \
524 cur * SAVAGE_DMA_PAGE_SIZE + \
525 dev_priv->dma_pages[cur].used; \
526 if (dev_priv->dma_pages[cur].used == 0) \
527 savage_dma_wait(dev_priv, cur); \
528 dev_priv->dma_pages[cur].used += (n); \
529 } \
530} while(0)
531
532#define DMA_WRITE( val ) *dma_ptr++ = (uint32_t)(val)
533
534#define DMA_COPY_FROM_USER(src,n) do { \
535 DRM_COPY_FROM_USER_UNCHECKED(dma_ptr, (src), (n)*4); \
536 dma_ptr += n; \
537} while(0)
538
539#if SAVAGE_DMA_DEBUG
540#define DMA_COMMIT() do { \
541 unsigned int cur = dev_priv->current_dma_page; \
542 uint32_t *expected = (uint32_t *)dev_priv->cmd_dma->handle + \
543 cur * SAVAGE_DMA_PAGE_SIZE + \
544 dev_priv->dma_pages[cur].used; \
545 if (dma_ptr != expected) { \
546 DRM_ERROR("DMA allocation and use don't match: " \
547 "%p != %p\n", expected, dma_ptr); \
548 savage_dma_reset(dev_priv); \
549 } \
550} while(0)
551#else
552#define DMA_COMMIT() do {/* nothing */} while(0)
553#endif
554
555#define DMA_FLUSH() dev_priv->dma_flush(dev_priv)
556
557/* Buffer aging via event tag
558 */
559
560#define UPDATE_EVENT_COUNTER( ) do { \
561 if (dev_priv->status_ptr) { \
562 uint16_t count; \
563 /* coordinate with Xserver */ \
564 count = dev_priv->status_ptr[1023]; \
565 if (count < dev_priv->event_counter) \
566 dev_priv->event_wrap++; \
567 dev_priv->event_counter = count; \
568 } \
569} while(0)
570
571#define SET_AGE( age, e, w ) do { \
572 (age)->event = e; \
573 (age)->wrap = w; \
574} while(0)
575
576#define TEST_AGE( age, e, w ) \
577 ( (age)->wrap < (w) || ( (age)->wrap == (w) && (age)->event <= (e) ) )
578
579#endif /* __SAVAGE_DRV_H__ */
diff --git a/drivers/char/drm/savage_state.c b/drivers/char/drm/savage_state.c
new file mode 100644
index 000000000000..475695a00083
--- /dev/null
+++ b/drivers/char/drm/savage_state.c
@@ -0,0 +1,1146 @@
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 drm_clip_rect_t *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 drm_clip_rect_t *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 DRM_ERR(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("bad texAddr%d %08x (local addr out of range)\n",
93 unit, addr);
94 return DRM_ERR(EINVAL);
95 }
96 } else { /* AGP */
97 if (!dev_priv->agp_textures) {
98 DRM_ERROR("bad texAddr%d %08x (AGP not available)\n",
99 unit, addr);
100 return DRM_ERR(EINVAL);
101 }
102 addr &= ~7;
103 if (addr < dev_priv->agp_textures->offset ||
104 addr >= (dev_priv->agp_textures->offset +
105 dev_priv->agp_textures->size)) {
106 DRM_ERROR("bad texAddr%d %08x (AGP addr out of range)\n",
107 unit, addr);
108 return DRM_ERR(EINVAL);
109 }
110 }
111 return 0;
112}
113
114#define SAVE_STATE(reg,where) \
115 if(start <= reg && start+count > reg) \
116 DRM_GET_USER_UNCHECKED(dev_priv->state.where, &regs[reg-start])
117#define SAVE_STATE_MASK(reg,where,mask) do { \
118 if(start <= reg && start+count > reg) { \
119 uint32_t tmp; \
120 DRM_GET_USER_UNCHECKED(tmp, &regs[reg-start]); \
121 dev_priv->state.where = (tmp & (mask)) | \
122 (dev_priv->state.where & ~(mask)); \
123 } \
124} while (0)
125static int savage_verify_state_s3d(drm_savage_private_t *dev_priv,
126 unsigned int start, unsigned int count,
127 const uint32_t __user *regs)
128{
129 if (start < SAVAGE_TEXPALADDR_S3D ||
130 start+count-1 > SAVAGE_DESTTEXRWWATERMARK_S3D) {
131 DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
132 start, start+count-1);
133 return DRM_ERR(EINVAL);
134 }
135
136 SAVE_STATE_MASK(SAVAGE_SCSTART_S3D, s3d.new_scstart,
137 ~SAVAGE_SCISSOR_MASK_S3D);
138 SAVE_STATE_MASK(SAVAGE_SCEND_S3D, s3d.new_scend,
139 ~SAVAGE_SCISSOR_MASK_S3D);
140
141 /* if any texture regs were changed ... */
142 if (start <= SAVAGE_TEXCTRL_S3D &&
143 start+count > SAVAGE_TEXPALADDR_S3D) {
144 /* ... check texture state */
145 SAVE_STATE(SAVAGE_TEXCTRL_S3D, s3d.texctrl);
146 SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr);
147 if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK)
148 return savage_verify_texaddr(
149 dev_priv, 0, dev_priv->state.s3d.texaddr);
150 }
151
152 return 0;
153}
154
155static int savage_verify_state_s4(drm_savage_private_t *dev_priv,
156 unsigned int start, unsigned int count,
157 const uint32_t __user *regs)
158{
159 int ret = 0;
160
161 if (start < SAVAGE_DRAWLOCALCTRL_S4 ||
162 start+count-1 > SAVAGE_TEXBLENDCOLOR_S4) {
163 DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
164 start, start+count-1);
165 return DRM_ERR(EINVAL);
166 }
167
168 SAVE_STATE_MASK(SAVAGE_DRAWCTRL0_S4, s4.new_drawctrl0,
169 ~SAVAGE_SCISSOR_MASK_S4);
170 SAVE_STATE_MASK(SAVAGE_DRAWCTRL1_S4, s4.new_drawctrl1,
171 ~SAVAGE_SCISSOR_MASK_S4);
172
173 /* if any texture regs were changed ... */
174 if (start <= SAVAGE_TEXDESCR_S4 &&
175 start+count > SAVAGE_TEXPALADDR_S4) {
176 /* ... check texture state */
177 SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr);
178 SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0);
179 SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1);
180 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK)
181 ret |= savage_verify_texaddr(
182 dev_priv, 0, dev_priv->state.s4.texaddr0);
183 if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK)
184 ret |= savage_verify_texaddr(
185 dev_priv, 1, dev_priv->state.s4.texaddr1);
186 }
187
188 return ret;
189}
190#undef SAVE_STATE
191#undef SAVE_STATE_MASK
192
193static int savage_dispatch_state(drm_savage_private_t *dev_priv,
194 const drm_savage_cmd_header_t *cmd_header,
195 const uint32_t __user *regs)
196{
197 unsigned int count = cmd_header->state.count;
198 unsigned int start = cmd_header->state.start;
199 unsigned int count2 = 0;
200 unsigned int bci_size;
201 int ret;
202 DMA_LOCALS;
203
204 if (!count)
205 return 0;
206
207 if (DRM_VERIFYAREA_READ(regs, count*4))
208 return DRM_ERR(EFAULT);
209
210 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
211 ret = savage_verify_state_s3d(dev_priv, start, count, regs);
212 if (ret != 0)
213 return ret;
214 /* scissor regs are emitted in savage_dispatch_draw */
215 if (start < SAVAGE_SCSTART_S3D) {
216 if (start+count > SAVAGE_SCEND_S3D+1)
217 count2 = count - (SAVAGE_SCEND_S3D+1 - start);
218 if (start+count > SAVAGE_SCSTART_S3D)
219 count = SAVAGE_SCSTART_S3D - start;
220 } else if (start <= SAVAGE_SCEND_S3D) {
221 if (start+count > SAVAGE_SCEND_S3D+1) {
222 count -= SAVAGE_SCEND_S3D+1 - start;
223 start = SAVAGE_SCEND_S3D+1;
224 } else
225 return 0;
226 }
227 } else {
228 ret = savage_verify_state_s4(dev_priv, start, count, regs);
229 if (ret != 0)
230 return ret;
231 /* scissor regs are emitted in savage_dispatch_draw */
232 if (start < SAVAGE_DRAWCTRL0_S4) {
233 if (start+count > SAVAGE_DRAWCTRL1_S4+1)
234 count2 = count - (SAVAGE_DRAWCTRL1_S4+1 - start);
235 if (start+count > SAVAGE_DRAWCTRL0_S4)
236 count = SAVAGE_DRAWCTRL0_S4 - start;
237 } else if (start <= SAVAGE_DRAWCTRL1_S4) {
238 if (start+count > SAVAGE_DRAWCTRL1_S4+1) {
239 count -= SAVAGE_DRAWCTRL1_S4+1 - start;
240 start = SAVAGE_DRAWCTRL1_S4+1;
241 } else
242 return 0;
243 }
244 }
245
246 bci_size = count + (count+254)/255 + count2 + (count2+254)/255;
247
248 if (cmd_header->state.global) {
249 BEGIN_DMA(bci_size+1);
250 DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
251 dev_priv->waiting = 1;
252 } else {
253 BEGIN_DMA(bci_size);
254 }
255
256 do {
257 while (count > 0) {
258 unsigned int n = count < 255 ? count : 255;
259 DMA_SET_REGISTERS(start, n);
260 DMA_COPY_FROM_USER(regs, n);
261 count -= n;
262 start += n;
263 regs += n;
264 }
265 start += 2;
266 regs += 2;
267 count = count2;
268 count2 = 0;
269 } while (count);
270
271 DMA_COMMIT();
272
273 return 0;
274}
275
276static int savage_dispatch_dma_prim(drm_savage_private_t *dev_priv,
277 const drm_savage_cmd_header_t *cmd_header,
278 const drm_buf_t *dmabuf)
279{
280 unsigned char reorder = 0;
281 unsigned int prim = cmd_header->prim.prim;
282 unsigned int skip = cmd_header->prim.skip;
283 unsigned int n = cmd_header->prim.count;
284 unsigned int start = cmd_header->prim.start;
285 unsigned int i;
286 BCI_LOCALS;
287
288 if (!dmabuf) {
289 DRM_ERROR("called without dma buffers!\n");
290 return DRM_ERR(EINVAL);
291 }
292
293 if (!n)
294 return 0;
295
296 switch (prim) {
297 case SAVAGE_PRIM_TRILIST_201:
298 reorder = 1;
299 prim = SAVAGE_PRIM_TRILIST;
300 case SAVAGE_PRIM_TRILIST:
301 if (n % 3 != 0) {
302 DRM_ERROR("wrong number of vertices %u in TRILIST\n",
303 n);
304 return DRM_ERR(EINVAL);
305 }
306 break;
307 case SAVAGE_PRIM_TRISTRIP:
308 case SAVAGE_PRIM_TRIFAN:
309 if (n < 3) {
310 DRM_ERROR("wrong number of vertices %u in TRIFAN/STRIP\n",
311 n);
312 return DRM_ERR(EINVAL);
313 }
314 break;
315 default:
316 DRM_ERROR("invalid primitive type %u\n", prim);
317 return DRM_ERR(EINVAL);
318 }
319
320 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
321 if (skip != 0) {
322 DRM_ERROR("invalid skip flags 0x%04x for DMA\n",
323 skip);
324 return DRM_ERR(EINVAL);
325 }
326 } else {
327 unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
328 (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
329 (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
330 if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
331 DRM_ERROR("invalid skip flags 0x%04x for DMA\n",
332 skip);
333 return DRM_ERR(EINVAL);
334 }
335 if (reorder) {
336 DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
337 return DRM_ERR(EINVAL);
338 }
339 }
340
341 if (start + n > dmabuf->total/32) {
342 DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
343 start, start + n - 1, dmabuf->total/32);
344 return DRM_ERR(EINVAL);
345 }
346
347 /* Vertex DMA doesn't work with command DMA at the same time,
348 * so we use BCI_... to submit commands here. Flush buffered
349 * faked DMA first. */
350 DMA_FLUSH();
351
352 if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
353 BEGIN_BCI(2);
354 BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
355 BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
356 dev_priv->state.common.vbaddr = dmabuf->bus_address;
357 }
358 if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
359 /* Workaround for what looks like a hardware bug. If a
360 * WAIT_3D_IDLE was emitted some time before the
361 * indexed drawing command then the engine will lock
362 * up. There are two known workarounds:
363 * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
364 BEGIN_BCI(63);
365 for (i = 0; i < 63; ++i)
366 BCI_WRITE(BCI_CMD_WAIT);
367 dev_priv->waiting = 0;
368 }
369
370 prim <<= 25;
371 while (n != 0) {
372 /* Can emit up to 255 indices (85 triangles) at once. */
373 unsigned int count = n > 255 ? 255 : n;
374 if (reorder) {
375 /* Need to reorder indices for correct flat
376 * shading while preserving the clock sense
377 * for correct culling. Only on Savage3D. */
378 int reorder[3] = {-1, -1, -1};
379 reorder[start%3] = 2;
380
381 BEGIN_BCI((count+1+1)/2);
382 BCI_DRAW_INDICES_S3D(count, prim, start+2);
383
384 for (i = start+1; i+1 < start+count; i += 2)
385 BCI_WRITE((i + reorder[i % 3]) |
386 ((i+1 + reorder[(i+1) % 3]) << 16));
387 if (i < start+count)
388 BCI_WRITE(i + reorder[i%3]);
389 } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
390 BEGIN_BCI((count+1+1)/2);
391 BCI_DRAW_INDICES_S3D(count, prim, start);
392
393 for (i = start+1; i+1 < start+count; i += 2)
394 BCI_WRITE(i | ((i+1) << 16));
395 if (i < start+count)
396 BCI_WRITE(i);
397 } else {
398 BEGIN_BCI((count+2+1)/2);
399 BCI_DRAW_INDICES_S4(count, prim, skip);
400
401 for (i = start; i+1 < start+count; i += 2)
402 BCI_WRITE(i | ((i+1) << 16));
403 if (i < start+count)
404 BCI_WRITE(i);
405 }
406
407 start += count;
408 n -= count;
409
410 prim |= BCI_CMD_DRAW_CONT;
411 }
412
413 return 0;
414}
415
416static int savage_dispatch_vb_prim(drm_savage_private_t *dev_priv,
417 const drm_savage_cmd_header_t *cmd_header,
418 const uint32_t __user *vtxbuf,
419 unsigned int vb_size,
420 unsigned int vb_stride)
421{
422 unsigned char reorder = 0;
423 unsigned int prim = cmd_header->prim.prim;
424 unsigned int skip = cmd_header->prim.skip;
425 unsigned int n = cmd_header->prim.count;
426 unsigned int start = cmd_header->prim.start;
427 unsigned int vtx_size;
428 unsigned int i;
429 DMA_LOCALS;
430
431 if (!n)
432 return 0;
433
434 switch (prim) {
435 case SAVAGE_PRIM_TRILIST_201:
436 reorder = 1;
437 prim = SAVAGE_PRIM_TRILIST;
438 case SAVAGE_PRIM_TRILIST:
439 if (n % 3 != 0) {
440 DRM_ERROR("wrong number of vertices %u in TRILIST\n",
441 n);
442 return DRM_ERR(EINVAL);
443 }
444 break;
445 case SAVAGE_PRIM_TRISTRIP:
446 case SAVAGE_PRIM_TRIFAN:
447 if (n < 3) {
448 DRM_ERROR("wrong number of vertices %u in TRIFAN/STRIP\n",
449 n);
450 return DRM_ERR(EINVAL);
451 }
452 break;
453 default:
454 DRM_ERROR("invalid primitive type %u\n", prim);
455 return DRM_ERR(EINVAL);
456 }
457
458 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
459 if (skip > SAVAGE_SKIP_ALL_S3D) {
460 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
461 return DRM_ERR(EINVAL);
462 }
463 vtx_size = 8; /* full vertex */
464 } else {
465 if (skip > SAVAGE_SKIP_ALL_S4) {
466 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
467 return DRM_ERR(EINVAL);
468 }
469 vtx_size = 10; /* full vertex */
470 }
471
472 vtx_size -= (skip & 1) + (skip >> 1 & 1) +
473 (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
474 (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
475
476 if (vtx_size > vb_stride) {
477 DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
478 vtx_size, vb_stride);
479 return DRM_ERR(EINVAL);
480 }
481
482 if (start + n > vb_size / (vb_stride*4)) {
483 DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
484 start, start + n - 1, vb_size / (vb_stride*4));
485 return DRM_ERR(EINVAL);
486 }
487
488 prim <<= 25;
489 while (n != 0) {
490 /* Can emit up to 255 vertices (85 triangles) at once. */
491 unsigned int count = n > 255 ? 255 : n;
492 if (reorder) {
493 /* Need to reorder vertices for correct flat
494 * shading while preserving the clock sense
495 * for correct culling. Only on Savage3D. */
496 int reorder[3] = {-1, -1, -1};
497 reorder[start%3] = 2;
498
499 BEGIN_DMA(count*vtx_size+1);
500 DMA_DRAW_PRIMITIVE(count, prim, skip);
501
502 for (i = start; i < start+count; ++i) {
503 unsigned int j = i + reorder[i % 3];
504 DMA_COPY_FROM_USER(&vtxbuf[vb_stride*j],
505 vtx_size);
506 }
507
508 DMA_COMMIT();
509 } else {
510 BEGIN_DMA(count*vtx_size+1);
511 DMA_DRAW_PRIMITIVE(count, prim, skip);
512
513 if (vb_stride == vtx_size) {
514 DMA_COPY_FROM_USER(&vtxbuf[vb_stride*start],
515 vtx_size*count);
516 } else {
517 for (i = start; i < start+count; ++i) {
518 DMA_COPY_FROM_USER(
519 &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 __user *usr_idx,
539 const drm_buf_t *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 DRM_ERR(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",
563 n);
564 return DRM_ERR(EINVAL);
565 }
566 break;
567 case SAVAGE_PRIM_TRISTRIP:
568 case SAVAGE_PRIM_TRIFAN:
569 if (n < 3) {
570 DRM_ERROR("wrong number of indices %u in TRIFAN/STRIP\n",
571 n);
572 return DRM_ERR(EINVAL);
573 }
574 break;
575 default:
576 DRM_ERROR("invalid primitive type %u\n", prim);
577 return DRM_ERR(EINVAL);
578 }
579
580 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
581 if (skip != 0) {
582 DRM_ERROR("invalid skip flags 0x%04x for DMA\n",
583 skip);
584 return DRM_ERR(EINVAL);
585 }
586 } else {
587 unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
588 (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
589 (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
590 if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
591 DRM_ERROR("invalid skip flags 0x%04x for DMA\n",
592 skip);
593 return DRM_ERR(EINVAL);
594 }
595 if (reorder) {
596 DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
597 return DRM_ERR(EINVAL);
598 }
599 }
600
601 /* Vertex DMA doesn't work with command DMA at the same time,
602 * so we use BCI_... to submit commands here. Flush buffered
603 * faked DMA first. */
604 DMA_FLUSH();
605
606 if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
607 BEGIN_BCI(2);
608 BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
609 BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
610 dev_priv->state.common.vbaddr = dmabuf->bus_address;
611 }
612 if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
613 /* Workaround for what looks like a hardware bug. If a
614 * WAIT_3D_IDLE was emitted some time before the
615 * indexed drawing command then the engine will lock
616 * up. There are two known workarounds:
617 * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
618 BEGIN_BCI(63);
619 for (i = 0; i < 63; ++i)
620 BCI_WRITE(BCI_CMD_WAIT);
621 dev_priv->waiting = 0;
622 }
623
624 prim <<= 25;
625 while (n != 0) {
626 /* Can emit up to 255 indices (85 triangles) at once. */
627 unsigned int count = n > 255 ? 255 : n;
628 /* Is it ok to allocate 510 bytes on the stack in an ioctl? */
629 uint16_t idx[255];
630
631 /* Copy and check indices */
632 DRM_COPY_FROM_USER_UNCHECKED(idx, usr_idx, count*2);
633 for (i = 0; i < count; ++i) {
634 if (idx[i] > dmabuf->total/32) {
635 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
636 i, idx[i], dmabuf->total/32);
637 return DRM_ERR(EINVAL);
638 }
639 }
640
641 if (reorder) {
642 /* Need to reorder indices for correct flat
643 * shading while preserving the clock sense
644 * for correct culling. Only on Savage3D. */
645 int reorder[3] = {2, -1, -1};
646
647 BEGIN_BCI((count+1+1)/2);
648 BCI_DRAW_INDICES_S3D(count, prim, idx[2]);
649
650 for (i = 1; i+1 < count; i += 2)
651 BCI_WRITE(idx[i + reorder[i % 3]] |
652 (idx[i+1 + reorder[(i+1) % 3]] << 16));
653 if (i < count)
654 BCI_WRITE(idx[i + reorder[i%3]]);
655 } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
656 BEGIN_BCI((count+1+1)/2);
657 BCI_DRAW_INDICES_S3D(count, prim, idx[0]);
658
659 for (i = 1; i+1 < count; i += 2)
660 BCI_WRITE(idx[i] | (idx[i+1] << 16));
661 if (i < count)
662 BCI_WRITE(idx[i]);
663 } else {
664 BEGIN_BCI((count+2+1)/2);
665 BCI_DRAW_INDICES_S4(count, prim, skip);
666
667 for (i = 0; i+1 < count; i += 2)
668 BCI_WRITE(idx[i] | (idx[i+1] << 16));
669 if (i < count)
670 BCI_WRITE(idx[i]);
671 }
672
673 usr_idx += count;
674 n -= count;
675
676 prim |= BCI_CMD_DRAW_CONT;
677 }
678
679 return 0;
680}
681
682static int savage_dispatch_vb_idx(drm_savage_private_t *dev_priv,
683 const drm_savage_cmd_header_t *cmd_header,
684 const uint16_t __user *usr_idx,
685 const uint32_t __user *vtxbuf,
686 unsigned int vb_size,
687 unsigned int vb_stride)
688{
689 unsigned char reorder = 0;
690 unsigned int prim = cmd_header->idx.prim;
691 unsigned int skip = cmd_header->idx.skip;
692 unsigned int n = cmd_header->idx.count;
693 unsigned int vtx_size;
694 unsigned int i;
695 DMA_LOCALS;
696
697 if (!n)
698 return 0;
699
700 switch (prim) {
701 case SAVAGE_PRIM_TRILIST_201:
702 reorder = 1;
703 prim = SAVAGE_PRIM_TRILIST;
704 case SAVAGE_PRIM_TRILIST:
705 if (n % 3 != 0) {
706 DRM_ERROR("wrong number of indices %u in TRILIST\n",
707 n);
708 return DRM_ERR(EINVAL);
709 }
710 break;
711 case SAVAGE_PRIM_TRISTRIP:
712 case SAVAGE_PRIM_TRIFAN:
713 if (n < 3) {
714 DRM_ERROR("wrong number of indices %u in TRIFAN/STRIP\n",
715 n);
716 return DRM_ERR(EINVAL);
717 }
718 break;
719 default:
720 DRM_ERROR("invalid primitive type %u\n", prim);
721 return DRM_ERR(EINVAL);
722 }
723
724 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
725 if (skip > SAVAGE_SKIP_ALL_S3D) {
726 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
727 return DRM_ERR(EINVAL);
728 }
729 vtx_size = 8; /* full vertex */
730 } else {
731 if (skip > SAVAGE_SKIP_ALL_S4) {
732 DRM_ERROR("invalid skip flags 0x%04x\n", skip);
733 return DRM_ERR(EINVAL);
734 }
735 vtx_size = 10; /* full vertex */
736 }
737
738 vtx_size -= (skip & 1) + (skip >> 1 & 1) +
739 (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
740 (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
741
742 if (vtx_size > vb_stride) {
743 DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
744 vtx_size, vb_stride);
745 return DRM_ERR(EINVAL);
746 }
747
748 prim <<= 25;
749 while (n != 0) {
750 /* Can emit up to 255 vertices (85 triangles) at once. */
751 unsigned int count = n > 255 ? 255 : n;
752 /* Is it ok to allocate 510 bytes on the stack in an ioctl? */
753 uint16_t idx[255];
754
755 /* Copy and check indices */
756 DRM_COPY_FROM_USER_UNCHECKED(idx, usr_idx, count*2);
757 for (i = 0; i < count; ++i) {
758 if (idx[i] > vb_size / (vb_stride*4)) {
759 DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
760 i, idx[i], vb_size / (vb_stride*4));
761 return DRM_ERR(EINVAL);
762 }
763 }
764
765 if (reorder) {
766 /* Need to reorder vertices for correct flat
767 * shading while preserving the clock sense
768 * for correct culling. Only on Savage3D. */
769 int reorder[3] = {2, -1, -1};
770
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 + reorder[i % 3]];
776 DMA_COPY_FROM_USER(&vtxbuf[vb_stride*j],
777 vtx_size);
778 }
779
780 DMA_COMMIT();
781 } else {
782 BEGIN_DMA(count*vtx_size+1);
783 DMA_DRAW_PRIMITIVE(count, prim, skip);
784
785 for (i = 0; i < count; ++i) {
786 unsigned int j = idx[i];
787 DMA_COPY_FROM_USER(&vtxbuf[vb_stride*j],
788 vtx_size);
789 }
790
791 DMA_COMMIT();
792 }
793
794 usr_idx += count;
795 n -= count;
796
797 prim |= BCI_CMD_DRAW_CONT;
798 }
799
800 return 0;
801}
802
803static int savage_dispatch_clear(drm_savage_private_t *dev_priv,
804 const drm_savage_cmd_header_t *cmd_header,
805 const drm_savage_cmd_header_t __user *data,
806 unsigned int nbox,
807 const drm_clip_rect_t __user *usr_boxes)
808{
809 unsigned int flags = cmd_header->clear0.flags, mask, value;
810 unsigned int clear_cmd;
811 unsigned int i, nbufs;
812 DMA_LOCALS;
813
814 if (nbox == 0)
815 return 0;
816
817 DRM_GET_USER_UNCHECKED(mask, &((const drm_savage_cmd_header_t*)data)
818 ->clear1.mask);
819 DRM_GET_USER_UNCHECKED(value, &((const drm_savage_cmd_header_t*)data)
820 ->clear1.value);
821
822 clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
823 BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW;
824 BCI_CMD_SET_ROP(clear_cmd,0xCC);
825
826 nbufs = ((flags & SAVAGE_FRONT) ? 1 : 0) +
827 ((flags & SAVAGE_BACK) ? 1 : 0) +
828 ((flags & SAVAGE_DEPTH) ? 1 : 0);
829 if (nbufs == 0)
830 return 0;
831
832 if (mask != 0xffffffff) {
833 /* set mask */
834 BEGIN_DMA(2);
835 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
836 DMA_WRITE(mask);
837 DMA_COMMIT();
838 }
839 for (i = 0; i < nbox; ++i) {
840 drm_clip_rect_t box;
841 unsigned int x, y, w, h;
842 unsigned int buf;
843 DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box));
844 x = box.x1, y = box.y1;
845 w = box.x2 - box.x1;
846 h = box.y2 - box.y1;
847 BEGIN_DMA(nbufs*6);
848 for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) {
849 if (!(flags & buf))
850 continue;
851 DMA_WRITE(clear_cmd);
852 switch(buf) {
853 case SAVAGE_FRONT:
854 DMA_WRITE(dev_priv->front_offset);
855 DMA_WRITE(dev_priv->front_bd);
856 break;
857 case SAVAGE_BACK:
858 DMA_WRITE(dev_priv->back_offset);
859 DMA_WRITE(dev_priv->back_bd);
860 break;
861 case SAVAGE_DEPTH:
862 DMA_WRITE(dev_priv->depth_offset);
863 DMA_WRITE(dev_priv->depth_bd);
864 break;
865 }
866 DMA_WRITE(value);
867 DMA_WRITE(BCI_X_Y(x, y));
868 DMA_WRITE(BCI_W_H(w, h));
869 }
870 DMA_COMMIT();
871 }
872 if (mask != 0xffffffff) {
873 /* reset mask */
874 BEGIN_DMA(2);
875 DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
876 DMA_WRITE(0xffffffff);
877 DMA_COMMIT();
878 }
879
880 return 0;
881}
882
883static int savage_dispatch_swap(drm_savage_private_t *dev_priv,
884 unsigned int nbox,
885 const drm_clip_rect_t __user *usr_boxes)
886{
887 unsigned int swap_cmd;
888 unsigned int i;
889 DMA_LOCALS;
890
891 if (nbox == 0)
892 return 0;
893
894 swap_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
895 BCI_CMD_SRC_PBD_COLOR_NEW | BCI_CMD_DEST_GBD;
896 BCI_CMD_SET_ROP(swap_cmd,0xCC);
897
898 for (i = 0; i < nbox; ++i) {
899 drm_clip_rect_t box;
900 DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box));
901
902 BEGIN_DMA(6);
903 DMA_WRITE(swap_cmd);
904 DMA_WRITE(dev_priv->back_offset);
905 DMA_WRITE(dev_priv->back_bd);
906 DMA_WRITE(BCI_X_Y(box.x1, box.y1));
907 DMA_WRITE(BCI_X_Y(box.x1, box.y1));
908 DMA_WRITE(BCI_W_H(box.x2-box.x1, box.y2-box.y1));
909 DMA_COMMIT();
910 }
911
912 return 0;
913}
914
915static int savage_dispatch_draw(drm_savage_private_t *dev_priv,
916 const drm_savage_cmd_header_t __user *start,
917 const drm_savage_cmd_header_t __user *end,
918 const drm_buf_t *dmabuf,
919 const unsigned int __user *usr_vtxbuf,
920 unsigned int vb_size, unsigned int vb_stride,
921 unsigned int nbox,
922 const drm_clip_rect_t __user *usr_boxes)
923{
924 unsigned int i, j;
925 int ret;
926
927 for (i = 0; i < nbox; ++i) {
928 drm_clip_rect_t box;
929 const drm_savage_cmd_header_t __user *usr_cmdbuf;
930 DRM_COPY_FROM_USER_UNCHECKED(&box, &usr_boxes[i], sizeof(box));
931 dev_priv->emit_clip_rect(dev_priv, &box);
932
933 usr_cmdbuf = start;
934 while (usr_cmdbuf < end) {
935 drm_savage_cmd_header_t cmd_header;
936 DRM_COPY_FROM_USER_UNCHECKED(&cmd_header, usr_cmdbuf,
937 sizeof(cmd_header));
938 usr_cmdbuf++;
939 switch (cmd_header.cmd.cmd) {
940 case SAVAGE_CMD_DMA_PRIM:
941 ret = savage_dispatch_dma_prim(
942 dev_priv, &cmd_header, dmabuf);
943 break;
944 case SAVAGE_CMD_VB_PRIM:
945 ret = savage_dispatch_vb_prim(
946 dev_priv, &cmd_header,
947 (const uint32_t __user *)usr_vtxbuf,
948 vb_size, vb_stride);
949 break;
950 case SAVAGE_CMD_DMA_IDX:
951 j = (cmd_header.idx.count + 3) / 4;
952 /* j was check in savage_bci_cmdbuf */
953 ret = savage_dispatch_dma_idx(
954 dev_priv, &cmd_header,
955 (const uint16_t __user *)usr_cmdbuf,
956 dmabuf);
957 usr_cmdbuf += j;
958 break;
959 case SAVAGE_CMD_VB_IDX:
960 j = (cmd_header.idx.count + 3) / 4;
961 /* j was check in savage_bci_cmdbuf */
962 ret = savage_dispatch_vb_idx(
963 dev_priv, &cmd_header,
964 (const uint16_t __user *)usr_cmdbuf,
965 (const uint32_t __user *)usr_vtxbuf,
966 vb_size, vb_stride);
967 usr_cmdbuf += j;
968 break;
969 default:
970 /* What's the best return code? EFAULT? */
971 DRM_ERROR("IMPLEMENTATION ERROR: "
972 "non-drawing-command %d\n",
973 cmd_header.cmd.cmd);
974 return DRM_ERR(EINVAL);
975 }
976
977 if (ret != 0)
978 return ret;
979 }
980 }
981
982 return 0;
983}
984
985int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
986{
987 DRM_DEVICE;
988 drm_savage_private_t *dev_priv = dev->dev_private;
989 drm_device_dma_t *dma = dev->dma;
990 drm_buf_t *dmabuf;
991 drm_savage_cmdbuf_t cmdbuf;
992 drm_savage_cmd_header_t __user *usr_cmdbuf;
993 drm_savage_cmd_header_t __user *first_draw_cmd;
994 unsigned int __user *usr_vtxbuf;
995 drm_clip_rect_t __user *usr_boxes;
996 unsigned int i, j;
997 int ret = 0;
998
999 DRM_DEBUG("\n");
1000
1001 LOCK_TEST_WITH_RETURN(dev, filp);
1002
1003 DRM_COPY_FROM_USER_IOCTL(cmdbuf, (drm_savage_cmdbuf_t __user *)data,
1004 sizeof(cmdbuf));
1005
1006 if (dma && dma->buflist) {
1007 if (cmdbuf.dma_idx > dma->buf_count) {
1008 DRM_ERROR("vertex buffer index %u out of range (0-%u)\n",
1009 cmdbuf.dma_idx, dma->buf_count-1);
1010 return DRM_ERR(EINVAL);
1011 }
1012 dmabuf = dma->buflist[cmdbuf.dma_idx];
1013 } else {
1014 dmabuf = NULL;
1015 }
1016
1017 usr_cmdbuf = (drm_savage_cmd_header_t __user *)cmdbuf.cmd_addr;
1018 usr_vtxbuf = (unsigned int __user *)cmdbuf.vb_addr;
1019 usr_boxes = (drm_clip_rect_t __user *)cmdbuf.box_addr;
1020 if ((cmdbuf.size && DRM_VERIFYAREA_READ(usr_cmdbuf, cmdbuf.size*8)) ||
1021 (cmdbuf.vb_size && DRM_VERIFYAREA_READ(
1022 usr_vtxbuf, cmdbuf.vb_size)) ||
1023 (cmdbuf.nbox && DRM_VERIFYAREA_READ(
1024 usr_boxes, cmdbuf.nbox*sizeof(drm_clip_rect_t))))
1025 return DRM_ERR(EFAULT);
1026
1027 /* Make sure writes to DMA buffers are finished before sending
1028 * DMA commands to the graphics hardware. */
1029 DRM_MEMORYBARRIER();
1030
1031 /* Coming from user space. Don't know if the Xserver has
1032 * emitted wait commands. Assuming the worst. */
1033 dev_priv->waiting = 1;
1034
1035 i = 0;
1036 first_draw_cmd = NULL;
1037 while (i < cmdbuf.size) {
1038 drm_savage_cmd_header_t cmd_header;
1039 DRM_COPY_FROM_USER_UNCHECKED(&cmd_header, usr_cmdbuf,
1040 sizeof(cmd_header));
1041 usr_cmdbuf++;
1042 i++;
1043
1044 /* Group drawing commands with same state to minimize
1045 * iterations over clip rects. */
1046 j = 0;
1047 switch (cmd_header.cmd.cmd) {
1048 case SAVAGE_CMD_DMA_IDX:
1049 case SAVAGE_CMD_VB_IDX:
1050 j = (cmd_header.idx.count + 3) / 4;
1051 if (i + j > cmdbuf.size) {
1052 DRM_ERROR("indexed drawing command extends "
1053 "beyond end of command buffer\n");
1054 DMA_FLUSH();
1055 return DRM_ERR(EINVAL);
1056 }
1057 /* fall through */
1058 case SAVAGE_CMD_DMA_PRIM:
1059 case SAVAGE_CMD_VB_PRIM:
1060 if (!first_draw_cmd)
1061 first_draw_cmd = usr_cmdbuf-1;
1062 usr_cmdbuf += j;
1063 i += j;
1064 break;
1065 default:
1066 if (first_draw_cmd) {
1067 ret = savage_dispatch_draw (
1068 dev_priv, first_draw_cmd, usr_cmdbuf-1,
1069 dmabuf, usr_vtxbuf, cmdbuf.vb_size,
1070 cmdbuf.vb_stride,
1071 cmdbuf.nbox, usr_boxes);
1072 if (ret != 0)
1073 return ret;
1074 first_draw_cmd = NULL;
1075 }
1076 }
1077 if (first_draw_cmd)
1078 continue;
1079
1080 switch (cmd_header.cmd.cmd) {
1081 case SAVAGE_CMD_STATE:
1082 j = (cmd_header.state.count + 1) / 2;
1083 if (i + j > cmdbuf.size) {
1084 DRM_ERROR("command SAVAGE_CMD_STATE extends "
1085 "beyond end of command buffer\n");
1086 DMA_FLUSH();
1087 return DRM_ERR(EINVAL);
1088 }
1089 ret = savage_dispatch_state(
1090 dev_priv, &cmd_header,
1091 (uint32_t __user *)usr_cmdbuf);
1092 usr_cmdbuf += j;
1093 i += j;
1094 break;
1095 case SAVAGE_CMD_CLEAR:
1096 if (i + 1 > cmdbuf.size) {
1097 DRM_ERROR("command SAVAGE_CMD_CLEAR extends "
1098 "beyond end of command buffer\n");
1099 DMA_FLUSH();
1100 return DRM_ERR(EINVAL);
1101 }
1102 ret = savage_dispatch_clear(dev_priv, &cmd_header,
1103 usr_cmdbuf,
1104 cmdbuf.nbox, usr_boxes);
1105 usr_cmdbuf++;
1106 i++;
1107 break;
1108 case SAVAGE_CMD_SWAP:
1109 ret = savage_dispatch_swap(dev_priv,
1110 cmdbuf.nbox, usr_boxes);
1111 break;
1112 default:
1113 DRM_ERROR("invalid command 0x%x\n", cmd_header.cmd.cmd);
1114 DMA_FLUSH();
1115 return DRM_ERR(EINVAL);
1116 }
1117
1118 if (ret != 0) {
1119 DMA_FLUSH();
1120 return ret;
1121 }
1122 }
1123
1124 if (first_draw_cmd) {
1125 ret = savage_dispatch_draw (
1126 dev_priv, first_draw_cmd, usr_cmdbuf, dmabuf,
1127 usr_vtxbuf, cmdbuf.vb_size, cmdbuf.vb_stride,
1128 cmdbuf.nbox, usr_boxes);
1129 if (ret != 0) {
1130 DMA_FLUSH();
1131 return ret;
1132 }
1133 }
1134
1135 DMA_FLUSH();
1136
1137 if (dmabuf && cmdbuf.discard) {
1138 drm_savage_buf_priv_t *buf_priv = dmabuf->dev_private;
1139 uint16_t event;
1140 event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
1141 SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
1142 savage_freelist_put(dev, dmabuf);
1143 }
1144
1145 return 0;
1146}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 19:29:18 -0500