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airport: remove useless return in a function returning void
[linux/fpc-iii.git] / drivers / gpu / drm / radeon / radeon_cp.c
blobdcebb4bee7aaf9e0e845db50296798f76686d1a6
1 /* radeon_cp.c -- CP support for Radeon -*- linux-c -*- */
2 /*
3 * Copyright 2000 Precision Insight, Inc., Cedar Park, Texas.
4 * Copyright 2000 VA Linux Systems, Inc., Fremont, California.
5 * Copyright 2007 Advanced Micro Devices, Inc.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
26 *
27 * Authors:
28 * Kevin E. Martin <martin@valinux.com>
29 * Gareth Hughes <gareth@valinux.com>
30 */
31
32 #include "drmP.h"
33 #include "drm.h"
34 #include "radeon_drm.h"
35 #include "radeon_drv.h"
36 #include "r300_reg.h"
37
38 #include "radeon_microcode.h"
39
40 #define RADEON_FIFO_DEBUG 0
41
42 static int radeon_do_cleanup_cp(struct drm_device * dev);
43 static void radeon_do_cp_start(drm_radeon_private_t * dev_priv);
44
45 static u32 R500_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
46 {
47 u32 ret;
48 RADEON_WRITE(R520_MC_IND_INDEX, 0x7f0000 | (addr & 0xff));
49 ret = RADEON_READ(R520_MC_IND_DATA);
50 RADEON_WRITE(R520_MC_IND_INDEX, 0);
51 return ret;
52 }
53
54 static u32 RS480_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
55 {
56 u32 ret;
57 RADEON_WRITE(RS480_NB_MC_INDEX, addr & 0xff);
58 ret = RADEON_READ(RS480_NB_MC_DATA);
59 RADEON_WRITE(RS480_NB_MC_INDEX, 0xff);
60 return ret;
61 }
62
63 static u32 RS690_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
64 {
65 u32 ret;
66 RADEON_WRITE(RS690_MC_INDEX, (addr & RS690_MC_INDEX_MASK));
67 ret = RADEON_READ(RS690_MC_DATA);
68 RADEON_WRITE(RS690_MC_INDEX, RS690_MC_INDEX_MASK);
69 return ret;
70 }
71
72 static u32 IGP_READ_MCIND(drm_radeon_private_t *dev_priv, int addr)
73 {
74 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
75 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740))
76 return RS690_READ_MCIND(dev_priv, addr);
77 else
78 return RS480_READ_MCIND(dev_priv, addr);
79 }
80
81 u32 radeon_read_fb_location(drm_radeon_private_t *dev_priv)
82 {
83
84 if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515)
85 return R500_READ_MCIND(dev_priv, RV515_MC_FB_LOCATION);
86 else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
87 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740))
88 return RS690_READ_MCIND(dev_priv, RS690_MC_FB_LOCATION);
89 else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515)
90 return R500_READ_MCIND(dev_priv, R520_MC_FB_LOCATION);
91 else
92 return RADEON_READ(RADEON_MC_FB_LOCATION);
93 }
94
95 static void radeon_write_fb_location(drm_radeon_private_t *dev_priv, u32 fb_loc)
96 {
97 if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515)
98 R500_WRITE_MCIND(RV515_MC_FB_LOCATION, fb_loc);
99 else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
100 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740))
101 RS690_WRITE_MCIND(RS690_MC_FB_LOCATION, fb_loc);
102 else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515)
103 R500_WRITE_MCIND(R520_MC_FB_LOCATION, fb_loc);
104 else
105 RADEON_WRITE(RADEON_MC_FB_LOCATION, fb_loc);
106 }
107
108 static void radeon_write_agp_location(drm_radeon_private_t *dev_priv, u32 agp_loc)
109 {
110 if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515)
111 R500_WRITE_MCIND(RV515_MC_AGP_LOCATION, agp_loc);
112 else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
113 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740))
114 RS690_WRITE_MCIND(RS690_MC_AGP_LOCATION, agp_loc);
115 else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515)
116 R500_WRITE_MCIND(R520_MC_AGP_LOCATION, agp_loc);
117 else
118 RADEON_WRITE(RADEON_MC_AGP_LOCATION, agp_loc);
119 }
120
121 static void radeon_write_agp_base(drm_radeon_private_t *dev_priv, u64 agp_base)
122 {
123 u32 agp_base_hi = upper_32_bits(agp_base);
124 u32 agp_base_lo = agp_base & 0xffffffff;
125
126 if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515) {
127 R500_WRITE_MCIND(RV515_MC_AGP_BASE, agp_base_lo);
128 R500_WRITE_MCIND(RV515_MC_AGP_BASE_2, agp_base_hi);
129 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
130 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740)) {
131 RS690_WRITE_MCIND(RS690_MC_AGP_BASE, agp_base_lo);
132 RS690_WRITE_MCIND(RS690_MC_AGP_BASE_2, agp_base_hi);
133 } else if ((dev_priv->flags & RADEON_FAMILY_MASK) > CHIP_RV515) {
134 R500_WRITE_MCIND(R520_MC_AGP_BASE, agp_base_lo);
135 R500_WRITE_MCIND(R520_MC_AGP_BASE_2, agp_base_hi);
136 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
137 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
138 RADEON_WRITE(RADEON_AGP_BASE, agp_base_lo);
139 RADEON_WRITE(RS480_AGP_BASE_2, agp_base_hi);
140 } else {
141 RADEON_WRITE(RADEON_AGP_BASE, agp_base_lo);
142 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R200)
143 RADEON_WRITE(RADEON_AGP_BASE_2, agp_base_hi);
144 }
145 }
146
147 static int RADEON_READ_PLL(struct drm_device * dev, int addr)
148 {
149 drm_radeon_private_t *dev_priv = dev->dev_private;
150
151 RADEON_WRITE8(RADEON_CLOCK_CNTL_INDEX, addr & 0x1f);
152 return RADEON_READ(RADEON_CLOCK_CNTL_DATA);
153 }
154
155 static u32 RADEON_READ_PCIE(drm_radeon_private_t *dev_priv, int addr)
156 {
157 RADEON_WRITE8(RADEON_PCIE_INDEX, addr & 0xff);
158 return RADEON_READ(RADEON_PCIE_DATA);
159 }
160
161 #if RADEON_FIFO_DEBUG
162 static void radeon_status(drm_radeon_private_t * dev_priv)
163 {
164 printk("%s:\n", __func__);
165 printk("RBBM_STATUS = 0x%08x\n",
166 (unsigned int)RADEON_READ(RADEON_RBBM_STATUS));
167 printk("CP_RB_RTPR = 0x%08x\n",
168 (unsigned int)RADEON_READ(RADEON_CP_RB_RPTR));
169 printk("CP_RB_WTPR = 0x%08x\n",
170 (unsigned int)RADEON_READ(RADEON_CP_RB_WPTR));
171 printk("AIC_CNTL = 0x%08x\n",
172 (unsigned int)RADEON_READ(RADEON_AIC_CNTL));
173 printk("AIC_STAT = 0x%08x\n",
174 (unsigned int)RADEON_READ(RADEON_AIC_STAT));
175 printk("AIC_PT_BASE = 0x%08x\n",
176 (unsigned int)RADEON_READ(RADEON_AIC_PT_BASE));
177 printk("TLB_ADDR = 0x%08x\n",
178 (unsigned int)RADEON_READ(RADEON_AIC_TLB_ADDR));
179 printk("TLB_DATA = 0x%08x\n",
180 (unsigned int)RADEON_READ(RADEON_AIC_TLB_DATA));
181 }
182 #endif
183
184 /* ================================================================
185 * Engine, FIFO control
186 */
187
188 static int radeon_do_pixcache_flush(drm_radeon_private_t * dev_priv)
189 {
190 u32 tmp;
191 int i;
192
193 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
194
195 if ((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV280) {
196 tmp = RADEON_READ(RADEON_RB3D_DSTCACHE_CTLSTAT);
197 tmp |= RADEON_RB3D_DC_FLUSH_ALL;
198 RADEON_WRITE(RADEON_RB3D_DSTCACHE_CTLSTAT, tmp);
199
200 for (i = 0; i < dev_priv->usec_timeout; i++) {
201 if (!(RADEON_READ(RADEON_RB3D_DSTCACHE_CTLSTAT)
202 & RADEON_RB3D_DC_BUSY)) {
203 return 0;
204 }
205 DRM_UDELAY(1);
206 }
207 } else {
208 /* don't flush or purge cache here or lockup */
209 return 0;
210 }
211
212 #if RADEON_FIFO_DEBUG
213 DRM_ERROR("failed!\n");
214 radeon_status(dev_priv);
215 #endif
216 return -EBUSY;
217 }
218
219 static int radeon_do_wait_for_fifo(drm_radeon_private_t * dev_priv, int entries)
220 {
221 int i;
222
223 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
224
225 for (i = 0; i < dev_priv->usec_timeout; i++) {
226 int slots = (RADEON_READ(RADEON_RBBM_STATUS)
227 & RADEON_RBBM_FIFOCNT_MASK);
228 if (slots >= entries)
229 return 0;
230 DRM_UDELAY(1);
231 }
232 DRM_DEBUG("wait for fifo failed status : 0x%08X 0x%08X\n",
233 RADEON_READ(RADEON_RBBM_STATUS),
234 RADEON_READ(R300_VAP_CNTL_STATUS));
235
236 #if RADEON_FIFO_DEBUG
237 DRM_ERROR("failed!\n");
238 radeon_status(dev_priv);
239 #endif
240 return -EBUSY;
241 }
242
243 static int radeon_do_wait_for_idle(drm_radeon_private_t * dev_priv)
244 {
245 int i, ret;
246
247 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
248
249 ret = radeon_do_wait_for_fifo(dev_priv, 64);
250 if (ret)
251 return ret;
252
253 for (i = 0; i < dev_priv->usec_timeout; i++) {
254 if (!(RADEON_READ(RADEON_RBBM_STATUS)
255 & RADEON_RBBM_ACTIVE)) {
256 radeon_do_pixcache_flush(dev_priv);
257 return 0;
258 }
259 DRM_UDELAY(1);
260 }
261 DRM_DEBUG("wait idle failed status : 0x%08X 0x%08X\n",
262 RADEON_READ(RADEON_RBBM_STATUS),
263 RADEON_READ(R300_VAP_CNTL_STATUS));
264
265 #if RADEON_FIFO_DEBUG
266 DRM_ERROR("failed!\n");
267 radeon_status(dev_priv);
268 #endif
269 return -EBUSY;
270 }
271
272 static void radeon_init_pipes(drm_radeon_private_t *dev_priv)
273 {
274 uint32_t gb_tile_config, gb_pipe_sel = 0;
275
276 /* RS4xx/RS6xx/R4xx/R5xx */
277 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R420) {
278 gb_pipe_sel = RADEON_READ(R400_GB_PIPE_SELECT);
279 dev_priv->num_gb_pipes = ((gb_pipe_sel >> 12) & 0x3) + 1;
280 } else {
281 /* R3xx */
282 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300) ||
283 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R350)) {
284 dev_priv->num_gb_pipes = 2;
285 } else {
286 /* R3Vxx */
287 dev_priv->num_gb_pipes = 1;
288 }
289 }
290 DRM_INFO("Num pipes: %d\n", dev_priv->num_gb_pipes);
291
292 gb_tile_config = (R300_ENABLE_TILING | R300_TILE_SIZE_16 /*| R300_SUBPIXEL_1_16*/);
293
294 switch (dev_priv->num_gb_pipes) {
295 case 2: gb_tile_config |= R300_PIPE_COUNT_R300; break;
296 case 3: gb_tile_config |= R300_PIPE_COUNT_R420_3P; break;
297 case 4: gb_tile_config |= R300_PIPE_COUNT_R420; break;
298 default:
299 case 1: gb_tile_config |= R300_PIPE_COUNT_RV350; break;
300 }
301
302 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RV515) {
303 RADEON_WRITE_PLL(R500_DYN_SCLK_PWMEM_PIPE, (1 | ((gb_pipe_sel >> 8) & 0xf) << 4));
304 RADEON_WRITE(R500_SU_REG_DEST, ((1 << dev_priv->num_gb_pipes) - 1));
305 }
306 RADEON_WRITE(R300_GB_TILE_CONFIG, gb_tile_config);
307 radeon_do_wait_for_idle(dev_priv);
308 RADEON_WRITE(R300_DST_PIPE_CONFIG, RADEON_READ(R300_DST_PIPE_CONFIG) | R300_PIPE_AUTO_CONFIG);
309 RADEON_WRITE(R300_RB2D_DSTCACHE_MODE, (RADEON_READ(R300_RB2D_DSTCACHE_MODE) |
310 R300_DC_AUTOFLUSH_ENABLE |
311 R300_DC_DC_DISABLE_IGNORE_PE));
312
313
314 }
315
316 /* ================================================================
317 * CP control, initialization
318 */
319
320 /* Load the microcode for the CP */
321 static void radeon_cp_load_microcode(drm_radeon_private_t * dev_priv)
322 {
323 int i;
324 DRM_DEBUG("\n");
325
326 radeon_do_wait_for_idle(dev_priv);
327
328 RADEON_WRITE(RADEON_CP_ME_RAM_ADDR, 0);
329 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R100) ||
330 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV100) ||
331 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV200) ||
332 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS100) ||
333 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS200)) {
334 DRM_INFO("Loading R100 Microcode\n");
335 for (i = 0; i < 256; i++) {
336 RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
337 R100_cp_microcode[i][1]);
338 RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
339 R100_cp_microcode[i][0]);
340 }
341 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R200) ||
342 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV250) ||
343 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV280) ||
344 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS300)) {
345 DRM_INFO("Loading R200 Microcode\n");
346 for (i = 0; i < 256; i++) {
347 RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
348 R200_cp_microcode[i][1]);
349 RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
350 R200_cp_microcode[i][0]);
351 }
352 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R300) ||
353 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R350) ||
354 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV350) ||
355 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV380) ||
356 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
357 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
358 DRM_INFO("Loading R300 Microcode\n");
359 for (i = 0; i < 256; i++) {
360 RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
361 R300_cp_microcode[i][1]);
362 RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
363 R300_cp_microcode[i][0]);
364 }
365 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R420) ||
366 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R423) ||
367 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV410)) {
368 DRM_INFO("Loading R400 Microcode\n");
369 for (i = 0; i < 256; i++) {
370 RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
371 R420_cp_microcode[i][1]);
372 RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
373 R420_cp_microcode[i][0]);
374 }
375 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
376 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740)) {
377 DRM_INFO("Loading RS690/RS740 Microcode\n");
378 for (i = 0; i < 256; i++) {
379 RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
380 RS690_cp_microcode[i][1]);
381 RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
382 RS690_cp_microcode[i][0]);
383 }
384 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV515) ||
385 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R520) ||
386 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV530) ||
387 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R580) ||
388 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV560) ||
389 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV570)) {
390 DRM_INFO("Loading R500 Microcode\n");
391 for (i = 0; i < 256; i++) {
392 RADEON_WRITE(RADEON_CP_ME_RAM_DATAH,
393 R520_cp_microcode[i][1]);
394 RADEON_WRITE(RADEON_CP_ME_RAM_DATAL,
395 R520_cp_microcode[i][0]);
396 }
397 }
398 }
399
400 /* Flush any pending commands to the CP. This should only be used just
401 * prior to a wait for idle, as it informs the engine that the command
402 * stream is ending.
403 */
404 static void radeon_do_cp_flush(drm_radeon_private_t * dev_priv)
405 {
406 DRM_DEBUG("\n");
407 #if 0
408 u32 tmp;
409
410 tmp = RADEON_READ(RADEON_CP_RB_WPTR) | (1 << 31);
411 RADEON_WRITE(RADEON_CP_RB_WPTR, tmp);
412 #endif
413 }
414
415 /* Wait for the CP to go idle.
416 */
417 int radeon_do_cp_idle(drm_radeon_private_t * dev_priv)
418 {
419 RING_LOCALS;
420 DRM_DEBUG("\n");
421
422 BEGIN_RING(6);
423
424 RADEON_PURGE_CACHE();
425 RADEON_PURGE_ZCACHE();
426 RADEON_WAIT_UNTIL_IDLE();
427
428 ADVANCE_RING();
429 COMMIT_RING();
430
431 return radeon_do_wait_for_idle(dev_priv);
432 }
433
434 /* Start the Command Processor.
435 */
436 static void radeon_do_cp_start(drm_radeon_private_t * dev_priv)
437 {
438 RING_LOCALS;
439 DRM_DEBUG("\n");
440
441 radeon_do_wait_for_idle(dev_priv);
442
443 RADEON_WRITE(RADEON_CP_CSQ_CNTL, dev_priv->cp_mode);
444
445 dev_priv->cp_running = 1;
446
447 BEGIN_RING(8);
448 /* isync can only be written through cp on r5xx write it here */
449 OUT_RING(CP_PACKET0(RADEON_ISYNC_CNTL, 0));
450 OUT_RING(RADEON_ISYNC_ANY2D_IDLE3D |
451 RADEON_ISYNC_ANY3D_IDLE2D |
452 RADEON_ISYNC_WAIT_IDLEGUI |
453 RADEON_ISYNC_CPSCRATCH_IDLEGUI);
454 RADEON_PURGE_CACHE();
455 RADEON_PURGE_ZCACHE();
456 RADEON_WAIT_UNTIL_IDLE();
457 ADVANCE_RING();
458 COMMIT_RING();
459
460 dev_priv->track_flush |= RADEON_FLUSH_EMITED | RADEON_PURGE_EMITED;
461 }
462
463 /* Reset the Command Processor. This will not flush any pending
464 * commands, so you must wait for the CP command stream to complete
465 * before calling this routine.
466 */
467 static void radeon_do_cp_reset(drm_radeon_private_t * dev_priv)
468 {
469 u32 cur_read_ptr;
470 DRM_DEBUG("\n");
471
472 cur_read_ptr = RADEON_READ(RADEON_CP_RB_RPTR);
473 RADEON_WRITE(RADEON_CP_RB_WPTR, cur_read_ptr);
474 SET_RING_HEAD(dev_priv, cur_read_ptr);
475 dev_priv->ring.tail = cur_read_ptr;
476 }
477
478 /* Stop the Command Processor. This will not flush any pending
479 * commands, so you must flush the command stream and wait for the CP
480 * to go idle before calling this routine.
481 */
482 static void radeon_do_cp_stop(drm_radeon_private_t * dev_priv)
483 {
484 DRM_DEBUG("\n");
485
486 RADEON_WRITE(RADEON_CP_CSQ_CNTL, RADEON_CSQ_PRIDIS_INDDIS);
487
488 dev_priv->cp_running = 0;
489 }
490
491 /* Reset the engine. This will stop the CP if it is running.
492 */
493 static int radeon_do_engine_reset(struct drm_device * dev)
494 {
495 drm_radeon_private_t *dev_priv = dev->dev_private;
496 u32 clock_cntl_index = 0, mclk_cntl = 0, rbbm_soft_reset;
497 DRM_DEBUG("\n");
498
499 radeon_do_pixcache_flush(dev_priv);
500
501 if ((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV410) {
502 /* may need something similar for newer chips */
503 clock_cntl_index = RADEON_READ(RADEON_CLOCK_CNTL_INDEX);
504 mclk_cntl = RADEON_READ_PLL(dev, RADEON_MCLK_CNTL);
505
506 RADEON_WRITE_PLL(RADEON_MCLK_CNTL, (mclk_cntl |
507 RADEON_FORCEON_MCLKA |
508 RADEON_FORCEON_MCLKB |
509 RADEON_FORCEON_YCLKA |
510 RADEON_FORCEON_YCLKB |
511 RADEON_FORCEON_MC |
512 RADEON_FORCEON_AIC));
513 }
514
515 rbbm_soft_reset = RADEON_READ(RADEON_RBBM_SOFT_RESET);
516
517 RADEON_WRITE(RADEON_RBBM_SOFT_RESET, (rbbm_soft_reset |
518 RADEON_SOFT_RESET_CP |
519 RADEON_SOFT_RESET_HI |
520 RADEON_SOFT_RESET_SE |
521 RADEON_SOFT_RESET_RE |
522 RADEON_SOFT_RESET_PP |
523 RADEON_SOFT_RESET_E2 |
524 RADEON_SOFT_RESET_RB));
525 RADEON_READ(RADEON_RBBM_SOFT_RESET);
526 RADEON_WRITE(RADEON_RBBM_SOFT_RESET, (rbbm_soft_reset &
527 ~(RADEON_SOFT_RESET_CP |
528 RADEON_SOFT_RESET_HI |
529 RADEON_SOFT_RESET_SE |
530 RADEON_SOFT_RESET_RE |
531 RADEON_SOFT_RESET_PP |
532 RADEON_SOFT_RESET_E2 |
533 RADEON_SOFT_RESET_RB)));
534 RADEON_READ(RADEON_RBBM_SOFT_RESET);
535
536 if ((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV410) {
537 RADEON_WRITE_PLL(RADEON_MCLK_CNTL, mclk_cntl);
538 RADEON_WRITE(RADEON_CLOCK_CNTL_INDEX, clock_cntl_index);
539 RADEON_WRITE(RADEON_RBBM_SOFT_RESET, rbbm_soft_reset);
540 }
541
542 /* setup the raster pipes */
543 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R300)
544 radeon_init_pipes(dev_priv);
545
546 /* Reset the CP ring */
547 radeon_do_cp_reset(dev_priv);
548
549 /* The CP is no longer running after an engine reset */
550 dev_priv->cp_running = 0;
551
552 /* Reset any pending vertex, indirect buffers */
553 radeon_freelist_reset(dev);
554
555 return 0;
556 }
557
558 static void radeon_cp_init_ring_buffer(struct drm_device * dev,
559 drm_radeon_private_t * dev_priv)
560 {
561 u32 ring_start, cur_read_ptr;
562 u32 tmp;
563
564 /* Initialize the memory controller. With new memory map, the fb location
565 * is not changed, it should have been properly initialized already. Part
566 * of the problem is that the code below is bogus, assuming the GART is
567 * always appended to the fb which is not necessarily the case
568 */
569 if (!dev_priv->new_memmap)
570 radeon_write_fb_location(dev_priv,
571 ((dev_priv->gart_vm_start - 1) & 0xffff0000)
572 | (dev_priv->fb_location >> 16));
573
574 #if __OS_HAS_AGP
575 if (dev_priv->flags & RADEON_IS_AGP) {
576 radeon_write_agp_base(dev_priv, dev->agp->base);
577
578 radeon_write_agp_location(dev_priv,
579 (((dev_priv->gart_vm_start - 1 +
580 dev_priv->gart_size) & 0xffff0000) |
581 (dev_priv->gart_vm_start >> 16)));
582
583 ring_start = (dev_priv->cp_ring->offset
584 - dev->agp->base
585 + dev_priv->gart_vm_start);
586 } else
587 #endif
588 ring_start = (dev_priv->cp_ring->offset
589 - (unsigned long)dev->sg->virtual
590 + dev_priv->gart_vm_start);
591
592 RADEON_WRITE(RADEON_CP_RB_BASE, ring_start);
593
594 /* Set the write pointer delay */
595 RADEON_WRITE(RADEON_CP_RB_WPTR_DELAY, 0);
596
597 /* Initialize the ring buffer's read and write pointers */
598 cur_read_ptr = RADEON_READ(RADEON_CP_RB_RPTR);
599 RADEON_WRITE(RADEON_CP_RB_WPTR, cur_read_ptr);
600 SET_RING_HEAD(dev_priv, cur_read_ptr);
601 dev_priv->ring.tail = cur_read_ptr;
602
603 #if __OS_HAS_AGP
604 if (dev_priv->flags & RADEON_IS_AGP) {
605 RADEON_WRITE(RADEON_CP_RB_RPTR_ADDR,
606 dev_priv->ring_rptr->offset
607 - dev->agp->base + dev_priv->gart_vm_start);
608 } else
609 #endif
610 {
611 struct drm_sg_mem *entry = dev->sg;
612 unsigned long tmp_ofs, page_ofs;
613
614 tmp_ofs = dev_priv->ring_rptr->offset -
615 (unsigned long)dev->sg->virtual;
616 page_ofs = tmp_ofs >> PAGE_SHIFT;
617
618 RADEON_WRITE(RADEON_CP_RB_RPTR_ADDR, entry->busaddr[page_ofs]);
619 DRM_DEBUG("ring rptr: offset=0x%08lx handle=0x%08lx\n",
620 (unsigned long)entry->busaddr[page_ofs],
621 entry->handle + tmp_ofs);
622 }
623
624 /* Set ring buffer size */
625 #ifdef __BIG_ENDIAN
626 RADEON_WRITE(RADEON_CP_RB_CNTL,
627 RADEON_BUF_SWAP_32BIT |
628 (dev_priv->ring.fetch_size_l2ow << 18) |
629 (dev_priv->ring.rptr_update_l2qw << 8) |
630 dev_priv->ring.size_l2qw);
631 #else
632 RADEON_WRITE(RADEON_CP_RB_CNTL,
633 (dev_priv->ring.fetch_size_l2ow << 18) |
634 (dev_priv->ring.rptr_update_l2qw << 8) |
635 dev_priv->ring.size_l2qw);
636 #endif
637
638
639 /* Initialize the scratch register pointer. This will cause
640 * the scratch register values to be written out to memory
641 * whenever they are updated.
642 *
643 * We simply put this behind the ring read pointer, this works
644 * with PCI GART as well as (whatever kind of) AGP GART
645 */
646 RADEON_WRITE(RADEON_SCRATCH_ADDR, RADEON_READ(RADEON_CP_RB_RPTR_ADDR)
647 + RADEON_SCRATCH_REG_OFFSET);
648
649 dev_priv->scratch = ((__volatile__ u32 *)
650 dev_priv->ring_rptr->handle +
651 (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
652
653 RADEON_WRITE(RADEON_SCRATCH_UMSK, 0x7);
654
655 /* Turn on bus mastering */
656 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
657 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740)) {
658 /* rs600/rs690/rs740 */
659 tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
660 RADEON_WRITE(RADEON_BUS_CNTL, tmp);
661 } else if (((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV350) ||
662 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R420) ||
663 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
664 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
665 /* r1xx, r2xx, r300, r(v)350, r420/r481, rs400/rs480 */
666 tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
667 RADEON_WRITE(RADEON_BUS_CNTL, tmp);
668 } /* PCIE cards appears to not need this */
669
670 dev_priv->sarea_priv->last_frame = dev_priv->scratch[0] = 0;
671 RADEON_WRITE(RADEON_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame);
672
673 dev_priv->sarea_priv->last_dispatch = dev_priv->scratch[1] = 0;
674 RADEON_WRITE(RADEON_LAST_DISPATCH_REG,
675 dev_priv->sarea_priv->last_dispatch);
676
677 dev_priv->sarea_priv->last_clear = dev_priv->scratch[2] = 0;
678 RADEON_WRITE(RADEON_LAST_CLEAR_REG, dev_priv->sarea_priv->last_clear);
679
680 radeon_do_wait_for_idle(dev_priv);
681
682 /* Sync everything up */
683 RADEON_WRITE(RADEON_ISYNC_CNTL,
684 (RADEON_ISYNC_ANY2D_IDLE3D |
685 RADEON_ISYNC_ANY3D_IDLE2D |
686 RADEON_ISYNC_WAIT_IDLEGUI |
687 RADEON_ISYNC_CPSCRATCH_IDLEGUI));
688
689 }
690
691 static void radeon_test_writeback(drm_radeon_private_t * dev_priv)
692 {
693 u32 tmp;
694
695 /* Start with assuming that writeback doesn't work */
696 dev_priv->writeback_works = 0;
697
698 /* Writeback doesn't seem to work everywhere, test it here and possibly
699 * enable it if it appears to work
700 */
701 DRM_WRITE32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1), 0);
702 RADEON_WRITE(RADEON_SCRATCH_REG1, 0xdeadbeef);
703
704 for (tmp = 0; tmp < dev_priv->usec_timeout; tmp++) {
705 if (DRM_READ32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1)) ==
706 0xdeadbeef)
707 break;
708 DRM_UDELAY(1);
709 }
710
711 if (tmp < dev_priv->usec_timeout) {
712 dev_priv->writeback_works = 1;
713 DRM_INFO("writeback test succeeded in %d usecs\n", tmp);
714 } else {
715 dev_priv->writeback_works = 0;
716 DRM_INFO("writeback test failed\n");
717 }
718 if (radeon_no_wb == 1) {
719 dev_priv->writeback_works = 0;
720 DRM_INFO("writeback forced off\n");
721 }
722
723 if (!dev_priv->writeback_works) {
724 /* Disable writeback to avoid unnecessary bus master transfer */
725 RADEON_WRITE(RADEON_CP_RB_CNTL, RADEON_READ(RADEON_CP_RB_CNTL) |
726 RADEON_RB_NO_UPDATE);
727 RADEON_WRITE(RADEON_SCRATCH_UMSK, 0);
728 }
729 }
730
731 /* Enable or disable IGP GART on the chip */
732 static void radeon_set_igpgart(drm_radeon_private_t * dev_priv, int on)
733 {
734 u32 temp;
735
736 if (on) {
737 DRM_DEBUG("programming igp gart %08X %08lX %08X\n",
738 dev_priv->gart_vm_start,
739 (long)dev_priv->gart_info.bus_addr,
740 dev_priv->gart_size);
741
742 temp = IGP_READ_MCIND(dev_priv, RS480_MC_MISC_CNTL);
743 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
744 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740))
745 IGP_WRITE_MCIND(RS480_MC_MISC_CNTL, (RS480_GART_INDEX_REG_EN |
746 RS690_BLOCK_GFX_D3_EN));
747 else
748 IGP_WRITE_MCIND(RS480_MC_MISC_CNTL, RS480_GART_INDEX_REG_EN);
749
750 IGP_WRITE_MCIND(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN |
751 RS480_VA_SIZE_32MB));
752
753 temp = IGP_READ_MCIND(dev_priv, RS480_GART_FEATURE_ID);
754 IGP_WRITE_MCIND(RS480_GART_FEATURE_ID, (RS480_HANG_EN |
755 RS480_TLB_ENABLE |
756 RS480_GTW_LAC_EN |
757 RS480_1LEVEL_GART));
758
759 temp = dev_priv->gart_info.bus_addr & 0xfffff000;
760 temp |= (upper_32_bits(dev_priv->gart_info.bus_addr) & 0xff) << 4;
761 IGP_WRITE_MCIND(RS480_GART_BASE, temp);
762
763 temp = IGP_READ_MCIND(dev_priv, RS480_AGP_MODE_CNTL);
764 IGP_WRITE_MCIND(RS480_AGP_MODE_CNTL, ((1 << RS480_REQ_TYPE_SNOOP_SHIFT) |
765 RS480_REQ_TYPE_SNOOP_DIS));
766
767 radeon_write_agp_base(dev_priv, dev_priv->gart_vm_start);
768
769 dev_priv->gart_size = 32*1024*1024;
770 temp = (((dev_priv->gart_vm_start - 1 + dev_priv->gart_size) &
771 0xffff0000) | (dev_priv->gart_vm_start >> 16));
772
773 radeon_write_agp_location(dev_priv, temp);
774
775 temp = IGP_READ_MCIND(dev_priv, RS480_AGP_ADDRESS_SPACE_SIZE);
776 IGP_WRITE_MCIND(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN |
777 RS480_VA_SIZE_32MB));
778
779 do {
780 temp = IGP_READ_MCIND(dev_priv, RS480_GART_CACHE_CNTRL);
781 if ((temp & RS480_GART_CACHE_INVALIDATE) == 0)
782 break;
783 DRM_UDELAY(1);
784 } while (1);
785
786 IGP_WRITE_MCIND(RS480_GART_CACHE_CNTRL,
787 RS480_GART_CACHE_INVALIDATE);
788
789 do {
790 temp = IGP_READ_MCIND(dev_priv, RS480_GART_CACHE_CNTRL);
791 if ((temp & RS480_GART_CACHE_INVALIDATE) == 0)
792 break;
793 DRM_UDELAY(1);
794 } while (1);
795
796 IGP_WRITE_MCIND(RS480_GART_CACHE_CNTRL, 0);
797 } else {
798 IGP_WRITE_MCIND(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
799 }
800 }
801
802 static void radeon_set_pciegart(drm_radeon_private_t * dev_priv, int on)
803 {
804 u32 tmp = RADEON_READ_PCIE(dev_priv, RADEON_PCIE_TX_GART_CNTL);
805 if (on) {
806
807 DRM_DEBUG("programming pcie %08X %08lX %08X\n",
808 dev_priv->gart_vm_start,
809 (long)dev_priv->gart_info.bus_addr,
810 dev_priv->gart_size);
811 RADEON_WRITE_PCIE(RADEON_PCIE_TX_DISCARD_RD_ADDR_LO,
812 dev_priv->gart_vm_start);
813 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_BASE,
814 dev_priv->gart_info.bus_addr);
815 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_START_LO,
816 dev_priv->gart_vm_start);
817 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_END_LO,
818 dev_priv->gart_vm_start +
819 dev_priv->gart_size - 1);
820
821 radeon_write_agp_location(dev_priv, 0xffffffc0); /* ?? */
822
823 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_CNTL,
824 RADEON_PCIE_TX_GART_EN);
825 } else {
826 RADEON_WRITE_PCIE(RADEON_PCIE_TX_GART_CNTL,
827 tmp & ~RADEON_PCIE_TX_GART_EN);
828 }
829 }
830
831 /* Enable or disable PCI GART on the chip */
832 static void radeon_set_pcigart(drm_radeon_private_t * dev_priv, int on)
833 {
834 u32 tmp;
835
836 if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
837 ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740) ||
838 (dev_priv->flags & RADEON_IS_IGPGART)) {
839 radeon_set_igpgart(dev_priv, on);
840 return;
841 }
842
843 if (dev_priv->flags & RADEON_IS_PCIE) {
844 radeon_set_pciegart(dev_priv, on);
845 return;
846 }
847
848 tmp = RADEON_READ(RADEON_AIC_CNTL);
849
850 if (on) {
851 RADEON_WRITE(RADEON_AIC_CNTL,
852 tmp | RADEON_PCIGART_TRANSLATE_EN);
853
854 /* set PCI GART page-table base address
855 */
856 RADEON_WRITE(RADEON_AIC_PT_BASE, dev_priv->gart_info.bus_addr);
857
858 /* set address range for PCI address translate
859 */
860 RADEON_WRITE(RADEON_AIC_LO_ADDR, dev_priv->gart_vm_start);
861 RADEON_WRITE(RADEON_AIC_HI_ADDR, dev_priv->gart_vm_start
862 + dev_priv->gart_size - 1);
863
864 /* Turn off AGP aperture -- is this required for PCI GART?
865 */
866 radeon_write_agp_location(dev_priv, 0xffffffc0);
867 RADEON_WRITE(RADEON_AGP_COMMAND, 0); /* clear AGP_COMMAND */
868 } else {
869 RADEON_WRITE(RADEON_AIC_CNTL,
870 tmp & ~RADEON_PCIGART_TRANSLATE_EN);
871 }
872 }
873
874 static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init)
875 {
876 drm_radeon_private_t *dev_priv = dev->dev_private;
877
878 DRM_DEBUG("\n");
879
880 /* if we require new memory map but we don't have it fail */
881 if ((dev_priv->flags & RADEON_NEW_MEMMAP) && !dev_priv->new_memmap) {
882 DRM_ERROR("Cannot initialise DRM on this card\nThis card requires a new X.org DDX for 3D\n");
883 radeon_do_cleanup_cp(dev);
884 return -EINVAL;
885 }
886
887 if (init->is_pci && (dev_priv->flags & RADEON_IS_AGP)) {
888 DRM_DEBUG("Forcing AGP card to PCI mode\n");
889 dev_priv->flags &= ~RADEON_IS_AGP;
890 } else if (!(dev_priv->flags & (RADEON_IS_AGP | RADEON_IS_PCI | RADEON_IS_PCIE))
891 && !init->is_pci) {
892 DRM_DEBUG("Restoring AGP flag\n");
893 dev_priv->flags |= RADEON_IS_AGP;
894 }
895
896 if ((!(dev_priv->flags & RADEON_IS_AGP)) && !dev->sg) {
897 DRM_ERROR("PCI GART memory not allocated!\n");
898 radeon_do_cleanup_cp(dev);
899 return -EINVAL;
900 }
901
902 dev_priv->usec_timeout = init->usec_timeout;
903 if (dev_priv->usec_timeout < 1 ||
904 dev_priv->usec_timeout > RADEON_MAX_USEC_TIMEOUT) {
905 DRM_DEBUG("TIMEOUT problem!\n");
906 radeon_do_cleanup_cp(dev);
907 return -EINVAL;
908 }
909
910 /* Enable vblank on CRTC1 for older X servers
911 */
912 dev_priv->vblank_crtc = DRM_RADEON_VBLANK_CRTC1;
913
914 switch(init->func) {
915 case RADEON_INIT_R200_CP:
916 dev_priv->microcode_version = UCODE_R200;
917 break;
918 case RADEON_INIT_R300_CP:
919 dev_priv->microcode_version = UCODE_R300;
920 break;
921 default:
922 dev_priv->microcode_version = UCODE_R100;
923 }
924
925 dev_priv->do_boxes = 0;
926 dev_priv->cp_mode = init->cp_mode;
927
928 /* We don't support anything other than bus-mastering ring mode,
929 * but the ring can be in either AGP or PCI space for the ring
930 * read pointer.
931 */
932 if ((init->cp_mode != RADEON_CSQ_PRIBM_INDDIS) &&
933 (init->cp_mode != RADEON_CSQ_PRIBM_INDBM)) {
934 DRM_DEBUG("BAD cp_mode (%x)!\n", init->cp_mode);
935 radeon_do_cleanup_cp(dev);
936 return -EINVAL;
937 }
938
939 switch (init->fb_bpp) {
940 case 16:
941 dev_priv->color_fmt = RADEON_COLOR_FORMAT_RGB565;
942 break;
943 case 32:
944 default:
945 dev_priv->color_fmt = RADEON_COLOR_FORMAT_ARGB8888;
946 break;
947 }
948 dev_priv->front_offset = init->front_offset;
949 dev_priv->front_pitch = init->front_pitch;
950 dev_priv->back_offset = init->back_offset;
951 dev_priv->back_pitch = init->back_pitch;
952
953 switch (init->depth_bpp) {
954 case 16:
955 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_16BIT_INT_Z;
956 break;
957 case 32:
958 default:
959 dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_24BIT_INT_Z;
960 break;
961 }
962 dev_priv->depth_offset = init->depth_offset;
963 dev_priv->depth_pitch = init->depth_pitch;
964
965 /* Hardware state for depth clears. Remove this if/when we no
966 * longer clear the depth buffer with a 3D rectangle. Hard-code
967 * all values to prevent unwanted 3D state from slipping through
968 * and screwing with the clear operation.
969 */
970 dev_priv->depth_clear.rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
971 (dev_priv->color_fmt << 10) |
972 (dev_priv->microcode_version ==
973 UCODE_R100 ? RADEON_ZBLOCK16 : 0));
974
975 dev_priv->depth_clear.rb3d_zstencilcntl =
976 (dev_priv->depth_fmt |
977 RADEON_Z_TEST_ALWAYS |
978 RADEON_STENCIL_TEST_ALWAYS |
979 RADEON_STENCIL_S_FAIL_REPLACE |
980 RADEON_STENCIL_ZPASS_REPLACE |
981 RADEON_STENCIL_ZFAIL_REPLACE | RADEON_Z_WRITE_ENABLE);
982
983 dev_priv->depth_clear.se_cntl = (RADEON_FFACE_CULL_CW |
984 RADEON_BFACE_SOLID |
985 RADEON_FFACE_SOLID |
986 RADEON_FLAT_SHADE_VTX_LAST |
987 RADEON_DIFFUSE_SHADE_FLAT |
988 RADEON_ALPHA_SHADE_FLAT |
989 RADEON_SPECULAR_SHADE_FLAT |
990 RADEON_FOG_SHADE_FLAT |
991 RADEON_VTX_PIX_CENTER_OGL |
992 RADEON_ROUND_MODE_TRUNC |
993 RADEON_ROUND_PREC_8TH_PIX);
994
995
996 dev_priv->ring_offset = init->ring_offset;
997 dev_priv->ring_rptr_offset = init->ring_rptr_offset;
998 dev_priv->buffers_offset = init->buffers_offset;
999 dev_priv->gart_textures_offset = init->gart_textures_offset;
1000
1001 dev_priv->sarea = drm_getsarea(dev);
1002 if (!dev_priv->sarea) {
1003 DRM_ERROR("could not find sarea!\n");
1004 radeon_do_cleanup_cp(dev);
1005 return -EINVAL;
1006 }
1007
1008 dev_priv->cp_ring = drm_core_findmap(dev, init->ring_offset);
1009 if (!dev_priv->cp_ring) {
1010 DRM_ERROR("could not find cp ring region!\n");
1011 radeon_do_cleanup_cp(dev);
1012 return -EINVAL;
1013 }
1014 dev_priv->ring_rptr = drm_core_findmap(dev, init->ring_rptr_offset);
1015 if (!dev_priv->ring_rptr) {
1016 DRM_ERROR("could not find ring read pointer!\n");
1017 radeon_do_cleanup_cp(dev);
1018 return -EINVAL;
1019 }
1020 dev->agp_buffer_token = init->buffers_offset;
1021 dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
1022 if (!dev->agp_buffer_map) {
1023 DRM_ERROR("could not find dma buffer region!\n");
1024 radeon_do_cleanup_cp(dev);
1025 return -EINVAL;
1026 }
1027
1028 if (init->gart_textures_offset) {
1029 dev_priv->gart_textures =
1030 drm_core_findmap(dev, init->gart_textures_offset);
1031 if (!dev_priv->gart_textures) {
1032 DRM_ERROR("could not find GART texture region!\n");
1033 radeon_do_cleanup_cp(dev);
1034 return -EINVAL;
1035 }
1036 }
1037
1038 dev_priv->sarea_priv =
1039 (drm_radeon_sarea_t *) ((u8 *) dev_priv->sarea->handle +
1040 init->sarea_priv_offset);
1041
1042 #if __OS_HAS_AGP
1043 if (dev_priv->flags & RADEON_IS_AGP) {
1044 drm_core_ioremap(dev_priv->cp_ring, dev);
1045 drm_core_ioremap(dev_priv->ring_rptr, dev);
1046 drm_core_ioremap(dev->agp_buffer_map, dev);
1047 if (!dev_priv->cp_ring->handle ||
1048 !dev_priv->ring_rptr->handle ||
1049 !dev->agp_buffer_map->handle) {
1050 DRM_ERROR("could not find ioremap agp regions!\n");
1051 radeon_do_cleanup_cp(dev);
1052 return -EINVAL;
1053 }
1054 } else
1055 #endif
1056 {
1057 dev_priv->cp_ring->handle = (void *)dev_priv->cp_ring->offset;
1058 dev_priv->ring_rptr->handle =
1059 (void *)dev_priv->ring_rptr->offset;
1060 dev->agp_buffer_map->handle =
1061 (void *)dev->agp_buffer_map->offset;
1062
1063 DRM_DEBUG("dev_priv->cp_ring->handle %p\n",
1064 dev_priv->cp_ring->handle);
1065 DRM_DEBUG("dev_priv->ring_rptr->handle %p\n",
1066 dev_priv->ring_rptr->handle);
1067 DRM_DEBUG("dev->agp_buffer_map->handle %p\n",
1068 dev->agp_buffer_map->handle);
1069 }
1070
1071 dev_priv->fb_location = (radeon_read_fb_location(dev_priv) & 0xffff) << 16;
1072 dev_priv->fb_size =
1073 ((radeon_read_fb_location(dev_priv) & 0xffff0000u) + 0x10000)
1074 - dev_priv->fb_location;
1075
1076 dev_priv->front_pitch_offset = (((dev_priv->front_pitch / 64) << 22) |
1077 ((dev_priv->front_offset
1078 + dev_priv->fb_location) >> 10));
1079
1080 dev_priv->back_pitch_offset = (((dev_priv->back_pitch / 64) << 22) |
1081 ((dev_priv->back_offset
1082 + dev_priv->fb_location) >> 10));
1083
1084 dev_priv->depth_pitch_offset = (((dev_priv->depth_pitch / 64) << 22) |
1085 ((dev_priv->depth_offset
1086 + dev_priv->fb_location) >> 10));
1087
1088 dev_priv->gart_size = init->gart_size;
1089
1090 /* New let's set the memory map ... */
1091 if (dev_priv->new_memmap) {
1092 u32 base = 0;
1093
1094 DRM_INFO("Setting GART location based on new memory map\n");
1095
1096 /* If using AGP, try to locate the AGP aperture at the same
1097 * location in the card and on the bus, though we have to
1098 * align it down.
1099 */
1100 #if __OS_HAS_AGP
1101 if (dev_priv->flags & RADEON_IS_AGP) {
1102 base = dev->agp->base;
1103 /* Check if valid */
1104 if ((base + dev_priv->gart_size - 1) >= dev_priv->fb_location &&
1105 base < (dev_priv->fb_location + dev_priv->fb_size - 1)) {
1106 DRM_INFO("Can't use AGP base @0x%08lx, won't fit\n",
1107 dev->agp->base);
1108 base = 0;
1109 }
1110 }
1111 #endif
1112 /* If not or if AGP is at 0 (Macs), try to put it elsewhere */
1113 if (base == 0) {
1114 base = dev_priv->fb_location + dev_priv->fb_size;
1115 if (base < dev_priv->fb_location ||
1116 ((base + dev_priv->gart_size) & 0xfffffffful) < base)
1117 base = dev_priv->fb_location
1118 - dev_priv->gart_size;
1119 }
1120 dev_priv->gart_vm_start = base & 0xffc00000u;
1121 if (dev_priv->gart_vm_start != base)
1122 DRM_INFO("GART aligned down from 0x%08x to 0x%08x\n",
1123 base, dev_priv->gart_vm_start);
1124 } else {
1125 DRM_INFO("Setting GART location based on old memory map\n");
1126 dev_priv->gart_vm_start = dev_priv->fb_location +
1127 RADEON_READ(RADEON_CONFIG_APER_SIZE);
1128 }
1129
1130 #if __OS_HAS_AGP
1131 if (dev_priv->flags & RADEON_IS_AGP)
1132 dev_priv->gart_buffers_offset = (dev->agp_buffer_map->offset
1133 - dev->agp->base
1134 + dev_priv->gart_vm_start);
1135 else
1136 #endif
1137 dev_priv->gart_buffers_offset = (dev->agp_buffer_map->offset
1138 - (unsigned long)dev->sg->virtual
1139 + dev_priv->gart_vm_start);
1140
1141 DRM_DEBUG("dev_priv->gart_size %d\n", dev_priv->gart_size);
1142 DRM_DEBUG("dev_priv->gart_vm_start 0x%x\n", dev_priv->gart_vm_start);
1143 DRM_DEBUG("dev_priv->gart_buffers_offset 0x%lx\n",
1144 dev_priv->gart_buffers_offset);
1145
1146 dev_priv->ring.start = (u32 *) dev_priv->cp_ring->handle;
1147 dev_priv->ring.end = ((u32 *) dev_priv->cp_ring->handle
1148 + init->ring_size / sizeof(u32));
1149 dev_priv->ring.size = init->ring_size;
1150 dev_priv->ring.size_l2qw = drm_order(init->ring_size / 8);
1151
1152 dev_priv->ring.rptr_update = /* init->rptr_update */ 4096;
1153 dev_priv->ring.rptr_update_l2qw = drm_order( /* init->rptr_update */ 4096 / 8);
1154
1155 dev_priv->ring.fetch_size = /* init->fetch_size */ 32;
1156 dev_priv->ring.fetch_size_l2ow = drm_order( /* init->fetch_size */ 32 / 16);
1157 dev_priv->ring.tail_mask = (dev_priv->ring.size / sizeof(u32)) - 1;
1158
1159 dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
1160
1161 #if __OS_HAS_AGP
1162 if (dev_priv->flags & RADEON_IS_AGP) {
1163 /* Turn off PCI GART */
1164 radeon_set_pcigart(dev_priv, 0);
1165 } else
1166 #endif
1167 {
1168 dev_priv->gart_info.table_mask = DMA_BIT_MASK(32);
1169 /* if we have an offset set from userspace */
1170 if (dev_priv->pcigart_offset_set) {
1171 dev_priv->gart_info.bus_addr =
1172 dev_priv->pcigart_offset + dev_priv->fb_location;
1173 dev_priv->gart_info.mapping.offset =
1174 dev_priv->pcigart_offset + dev_priv->fb_aper_offset;
1175 dev_priv->gart_info.mapping.size =
1176 dev_priv->gart_info.table_size;
1177
1178 drm_core_ioremap_wc(&dev_priv->gart_info.mapping, dev);
1179 dev_priv->gart_info.addr =
1180 dev_priv->gart_info.mapping.handle;
1181
1182 if (dev_priv->flags & RADEON_IS_PCIE)
1183 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCIE;
1184 else
1185 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI;
1186 dev_priv->gart_info.gart_table_location =
1187 DRM_ATI_GART_FB;
1188
1189 DRM_DEBUG("Setting phys_pci_gart to %p %08lX\n",
1190 dev_priv->gart_info.addr,
1191 dev_priv->pcigart_offset);
1192 } else {
1193 if (dev_priv->flags & RADEON_IS_IGPGART)
1194 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_IGP;
1195 else
1196 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI;
1197 dev_priv->gart_info.gart_table_location =
1198 DRM_ATI_GART_MAIN;
1199 dev_priv->gart_info.addr = NULL;
1200 dev_priv->gart_info.bus_addr = 0;
1201 if (dev_priv->flags & RADEON_IS_PCIE) {
1202 DRM_ERROR
1203 ("Cannot use PCI Express without GART in FB memory\n");
1204 radeon_do_cleanup_cp(dev);
1205 return -EINVAL;
1206 }
1207 }
1208
1209 if (!drm_ati_pcigart_init(dev, &dev_priv->gart_info)) {
1210 DRM_ERROR("failed to init PCI GART!\n");
1211 radeon_do_cleanup_cp(dev);
1212 return -ENOMEM;
1213 }
1214
1215 /* Turn on PCI GART */
1216 radeon_set_pcigart(dev_priv, 1);
1217 }
1218
1219 radeon_cp_load_microcode(dev_priv);
1220 radeon_cp_init_ring_buffer(dev, dev_priv);
1221
1222 dev_priv->last_buf = 0;
1223
1224 radeon_do_engine_reset(dev);
1225 radeon_test_writeback(dev_priv);
1226
1227 return 0;
1228 }
1229
1230 static int radeon_do_cleanup_cp(struct drm_device * dev)
1231 {
1232 drm_radeon_private_t *dev_priv = dev->dev_private;
1233 DRM_DEBUG("\n");
1234
1235 /* Make sure interrupts are disabled here because the uninstall ioctl
1236 * may not have been called from userspace and after dev_private
1237 * is freed, it's too late.
1238 */
1239 if (dev->irq_enabled)
1240 drm_irq_uninstall(dev);
1241
1242 #if __OS_HAS_AGP
1243 if (dev_priv->flags & RADEON_IS_AGP) {
1244 if (dev_priv->cp_ring != NULL) {
1245 drm_core_ioremapfree(dev_priv->cp_ring, dev);
1246 dev_priv->cp_ring = NULL;
1247 }
1248 if (dev_priv->ring_rptr != NULL) {
1249 drm_core_ioremapfree(dev_priv->ring_rptr, dev);
1250 dev_priv->ring_rptr = NULL;
1251 }
1252 if (dev->agp_buffer_map != NULL) {
1253 drm_core_ioremapfree(dev->agp_buffer_map, dev);
1254 dev->agp_buffer_map = NULL;
1255 }
1256 } else
1257 #endif
1258 {
1259
1260 if (dev_priv->gart_info.bus_addr) {
1261 /* Turn off PCI GART */
1262 radeon_set_pcigart(dev_priv, 0);
1263 if (!drm_ati_pcigart_cleanup(dev, &dev_priv->gart_info))
1264 DRM_ERROR("failed to cleanup PCI GART!\n");
1265 }
1266
1267 if (dev_priv->gart_info.gart_table_location == DRM_ATI_GART_FB)
1268 {
1269 drm_core_ioremapfree(&dev_priv->gart_info.mapping, dev);
1270 dev_priv->gart_info.addr = 0;
1271 }
1272 }
1273 /* only clear to the start of flags */
1274 memset(dev_priv, 0, offsetof(drm_radeon_private_t, flags));
1275
1276 return 0;
1277 }
1278
1279 /* This code will reinit the Radeon CP hardware after a resume from disc.
1280 * AFAIK, it would be very difficult to pickle the state at suspend time, so
1281 * here we make sure that all Radeon hardware initialisation is re-done without
1282 * affecting running applications.
1283 *
1284 * Charl P. Botha <http://cpbotha.net>
1285 */
1286 static int radeon_do_resume_cp(struct drm_device * dev)
1287 {
1288 drm_radeon_private_t *dev_priv = dev->dev_private;
1289
1290 if (!dev_priv) {
1291 DRM_ERROR("Called with no initialization\n");
1292 return -EINVAL;
1293 }
1294
1295 DRM_DEBUG("Starting radeon_do_resume_cp()\n");
1296
1297 #if __OS_HAS_AGP
1298 if (dev_priv->flags & RADEON_IS_AGP) {
1299 /* Turn off PCI GART */
1300 radeon_set_pcigart(dev_priv, 0);
1301 } else
1302 #endif
1303 {
1304 /* Turn on PCI GART */
1305 radeon_set_pcigart(dev_priv, 1);
1306 }
1307
1308 radeon_cp_load_microcode(dev_priv);
1309 radeon_cp_init_ring_buffer(dev, dev_priv);
1310
1311 radeon_do_engine_reset(dev);
1312 radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
1313
1314 DRM_DEBUG("radeon_do_resume_cp() complete\n");
1315
1316 return 0;
1317 }
1318
1319 int radeon_cp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
1320 {
1321 drm_radeon_init_t *init = data;
1322
1323 LOCK_TEST_WITH_RETURN(dev, file_priv);
1324
1325 if (init->func == RADEON_INIT_R300_CP)
1326 r300_init_reg_flags(dev);
1327
1328 switch (init->func) {
1329 case RADEON_INIT_CP:
1330 case RADEON_INIT_R200_CP:
1331 case RADEON_INIT_R300_CP:
1332 return radeon_do_init_cp(dev, init);
1333 case RADEON_CLEANUP_CP:
1334 return radeon_do_cleanup_cp(dev);
1335 }
1336
1337 return -EINVAL;
1338 }
1339
1340 int radeon_cp_start(struct drm_device *dev, void *data, struct drm_file *file_priv)
1341 {
1342 drm_radeon_private_t *dev_priv = dev->dev_private;
1343 DRM_DEBUG("\n");
1344
1345 LOCK_TEST_WITH_RETURN(dev, file_priv);
1346
1347 if (dev_priv->cp_running) {
1348 DRM_DEBUG("while CP running\n");
1349 return 0;
1350 }
1351 if (dev_priv->cp_mode == RADEON_CSQ_PRIDIS_INDDIS) {
1352 DRM_DEBUG("called with bogus CP mode (%d)\n",
1353 dev_priv->cp_mode);
1354 return 0;
1355 }
1356
1357 radeon_do_cp_start(dev_priv);
1358
1359 return 0;
1360 }
1361
1362 /* Stop the CP. The engine must have been idled before calling this
1363 * routine.
1364 */
1365 int radeon_cp_stop(struct drm_device *dev, void *data, struct drm_file *file_priv)
1366 {
1367 drm_radeon_private_t *dev_priv = dev->dev_private;
1368 drm_radeon_cp_stop_t *stop = data;
1369 int ret;
1370 DRM_DEBUG("\n");
1371
1372 LOCK_TEST_WITH_RETURN(dev, file_priv);
1373
1374 if (!dev_priv->cp_running)
1375 return 0;
1376
1377 /* Flush any pending CP commands. This ensures any outstanding
1378 * commands are exectuted by the engine before we turn it off.
1379 */
1380 if (stop->flush) {
1381 radeon_do_cp_flush(dev_priv);
1382 }
1383
1384 /* If we fail to make the engine go idle, we return an error
1385 * code so that the DRM ioctl wrapper can try again.
1386 */
1387 if (stop->idle) {
1388 ret = radeon_do_cp_idle(dev_priv);
1389 if (ret)
1390 return ret;
1391 }
1392
1393 /* Finally, we can turn off the CP. If the engine isn't idle,
1394 * we will get some dropped triangles as they won't be fully
1395 * rendered before the CP is shut down.
1396 */
1397 radeon_do_cp_stop(dev_priv);
1398
1399 /* Reset the engine */
1400 radeon_do_engine_reset(dev);
1401
1402 return 0;
1403 }
1404
1405 void radeon_do_release(struct drm_device * dev)
1406 {
1407 drm_radeon_private_t *dev_priv = dev->dev_private;
1408 int i, ret;
1409
1410 if (dev_priv) {
1411 if (dev_priv->cp_running) {
1412 /* Stop the cp */
1413 while ((ret = radeon_do_cp_idle(dev_priv)) != 0) {
1414 DRM_DEBUG("radeon_do_cp_idle %d\n", ret);
1415 #ifdef __linux__
1416 schedule();
1417 #else
1418 tsleep(&ret, PZERO, "rdnrel", 1);
1419 #endif
1420 }
1421 radeon_do_cp_stop(dev_priv);
1422 radeon_do_engine_reset(dev);
1423 }
1424
1425 /* Disable *all* interrupts */
1426 if (dev_priv->mmio) /* remove this after permanent addmaps */
1427 RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
1428
1429 if (dev_priv->mmio) { /* remove all surfaces */
1430 for (i = 0; i < RADEON_MAX_SURFACES; i++) {
1431 RADEON_WRITE(RADEON_SURFACE0_INFO + 16 * i, 0);
1432 RADEON_WRITE(RADEON_SURFACE0_LOWER_BOUND +
1433 16 * i, 0);
1434 RADEON_WRITE(RADEON_SURFACE0_UPPER_BOUND +
1435 16 * i, 0);
1436 }
1437 }
1438
1439 /* Free memory heap structures */
1440 radeon_mem_takedown(&(dev_priv->gart_heap));
1441 radeon_mem_takedown(&(dev_priv->fb_heap));
1442
1443 /* deallocate kernel resources */
1444 radeon_do_cleanup_cp(dev);
1445 }
1446 }
1447
1448 /* Just reset the CP ring. Called as part of an X Server engine reset.
1449 */
1450 int radeon_cp_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
1451 {
1452 drm_radeon_private_t *dev_priv = dev->dev_private;
1453 DRM_DEBUG("\n");
1454
1455 LOCK_TEST_WITH_RETURN(dev, file_priv);
1456
1457 if (!dev_priv) {
1458 DRM_DEBUG("called before init done\n");
1459 return -EINVAL;
1460 }
1461
1462 radeon_do_cp_reset(dev_priv);
1463
1464 /* The CP is no longer running after an engine reset */
1465 dev_priv->cp_running = 0;
1466
1467 return 0;
1468 }
1469
1470 int radeon_cp_idle(struct drm_device *dev, void *data, struct drm_file *file_priv)
1471 {
1472 drm_radeon_private_t *dev_priv = dev->dev_private;
1473 DRM_DEBUG("\n");
1474
1475 LOCK_TEST_WITH_RETURN(dev, file_priv);
1476
1477 return radeon_do_cp_idle(dev_priv);
1478 }
1479
1480 /* Added by Charl P. Botha to call radeon_do_resume_cp().
1481 */
1482 int radeon_cp_resume(struct drm_device *dev, void *data, struct drm_file *file_priv)
1483 {
1484
1485 return radeon_do_resume_cp(dev);
1486 }
1487
1488 int radeon_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
1489 {
1490 DRM_DEBUG("\n");
1491
1492 LOCK_TEST_WITH_RETURN(dev, file_priv);
1493
1494 return radeon_do_engine_reset(dev);
1495 }
1496
1497 /* ================================================================
1498 * Fullscreen mode
1499 */
1500
1501 /* KW: Deprecated to say the least:
1502 */
1503 int radeon_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv)
1504 {
1505 return 0;
1506 }
1507
1508 /* ================================================================
1509 * Freelist management
1510 */
1511
1512 /* Original comment: FIXME: ROTATE_BUFS is a hack to cycle through
1513 * bufs until freelist code is used. Note this hides a problem with
1514 * the scratch register * (used to keep track of last buffer
1515 * completed) being written to before * the last buffer has actually
1516 * completed rendering.
1517 *
1518 * KW: It's also a good way to find free buffers quickly.
1519 *
1520 * KW: Ideally this loop wouldn't exist, and freelist_get wouldn't
1521 * sleep. However, bugs in older versions of radeon_accel.c mean that
1522 * we essentially have to do this, else old clients will break.
1523 *
1524 * However, it does leave open a potential deadlock where all the
1525 * buffers are held by other clients, which can't release them because
1526 * they can't get the lock.
1527 */
1528
1529 struct drm_buf *radeon_freelist_get(struct drm_device * dev)
1530 {
1531 struct drm_device_dma *dma = dev->dma;
1532 drm_radeon_private_t *dev_priv = dev->dev_private;
1533 drm_radeon_buf_priv_t *buf_priv;
1534 struct drm_buf *buf;
1535 int i, t;
1536 int start;
1537
1538 if (++dev_priv->last_buf >= dma->buf_count)
1539 dev_priv->last_buf = 0;
1540
1541 start = dev_priv->last_buf;
1542
1543 for (t = 0; t < dev_priv->usec_timeout; t++) {
1544 u32 done_age = GET_SCRATCH(1);
1545 DRM_DEBUG("done_age = %d\n", done_age);
1546 for (i = start; i < dma->buf_count; i++) {
1547 buf = dma->buflist[i];
1548 buf_priv = buf->dev_private;
1549 if (buf->file_priv == NULL || (buf->pending &&
1550 buf_priv->age <=
1551 done_age)) {
1552 dev_priv->stats.requested_bufs++;
1553 buf->pending = 0;
1554 return buf;
1555 }
1556 start = 0;
1557 }
1558
1559 if (t) {
1560 DRM_UDELAY(1);
1561 dev_priv->stats.freelist_loops++;
1562 }
1563 }
1564
1565 DRM_DEBUG("returning NULL!\n");
1566 return NULL;
1567 }
1568
1569 #if 0
1570 struct drm_buf *radeon_freelist_get(struct drm_device * dev)
1571 {
1572 struct drm_device_dma *dma = dev->dma;
1573 drm_radeon_private_t *dev_priv = dev->dev_private;
1574 drm_radeon_buf_priv_t *buf_priv;
1575 struct drm_buf *buf;
1576 int i, t;
1577 int start;
1578 u32 done_age = DRM_READ32(dev_priv->ring_rptr, RADEON_SCRATCHOFF(1));
1579
1580 if (++dev_priv->last_buf >= dma->buf_count)
1581 dev_priv->last_buf = 0;
1582
1583 start = dev_priv->last_buf;
1584 dev_priv->stats.freelist_loops++;
1585
1586 for (t = 0; t < 2; t++) {
1587 for (i = start; i < dma->buf_count; i++) {
1588 buf = dma->buflist[i];
1589 buf_priv = buf->dev_private;
1590 if (buf->file_priv == 0 || (buf->pending &&
1591 buf_priv->age <=
1592 done_age)) {
1593 dev_priv->stats.requested_bufs++;
1594 buf->pending = 0;
1595 return buf;
1596 }
1597 }
1598 start = 0;
1599 }
1600
1601 return NULL;
1602 }
1603 #endif
1604
1605 void radeon_freelist_reset(struct drm_device * dev)
1606 {
1607 struct drm_device_dma *dma = dev->dma;
1608 drm_radeon_private_t *dev_priv = dev->dev_private;
1609 int i;
1610
1611 dev_priv->last_buf = 0;
1612 for (i = 0; i < dma->buf_count; i++) {
1613 struct drm_buf *buf = dma->buflist[i];
1614 drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
1615 buf_priv->age = 0;
1616 }
1617 }
1618
1619 /* ================================================================
1620 * CP command submission
1621 */
1622
1623 int radeon_wait_ring(drm_radeon_private_t * dev_priv, int n)
1624 {
1625 drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
1626 int i;
1627 u32 last_head = GET_RING_HEAD(dev_priv);
1628
1629 for (i = 0; i < dev_priv->usec_timeout; i++) {
1630 u32 head = GET_RING_HEAD(dev_priv);
1631
1632 ring->space = (head - ring->tail) * sizeof(u32);
1633 if (ring->space <= 0)
1634 ring->space += ring->size;
1635 if (ring->space > n)
1636 return 0;
1637
1638 dev_priv->stats.boxes |= RADEON_BOX_WAIT_IDLE;
1639
1640 if (head != last_head)
1641 i = 0;
1642 last_head = head;
1643
1644 DRM_UDELAY(1);
1645 }
1646
1647 /* FIXME: This return value is ignored in the BEGIN_RING macro! */
1648 #if RADEON_FIFO_DEBUG
1649 radeon_status(dev_priv);
1650 DRM_ERROR("failed!\n");
1651 #endif
1652 return -EBUSY;
1653 }
1654
1655 static int radeon_cp_get_buffers(struct drm_device *dev,
1656 struct drm_file *file_priv,
1657 struct drm_dma * d)
1658 {
1659 int i;
1660 struct drm_buf *buf;
1661
1662 for (i = d->granted_count; i < d->request_count; i++) {
1663 buf = radeon_freelist_get(dev);
1664 if (!buf)
1665 return -EBUSY; /* NOTE: broken client */
1666
1667 buf->file_priv = file_priv;
1668
1669 if (DRM_COPY_TO_USER(&d->request_indices[i], &buf->idx,
1670 sizeof(buf->idx)))
1671 return -EFAULT;
1672 if (DRM_COPY_TO_USER(&d->request_sizes[i], &buf->total,
1673 sizeof(buf->total)))
1674 return -EFAULT;
1675
1676 d->granted_count++;
1677 }
1678 return 0;
1679 }
1680
1681 int radeon_cp_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv)
1682 {
1683 struct drm_device_dma *dma = dev->dma;
1684 int ret = 0;
1685 struct drm_dma *d = data;
1686
1687 LOCK_TEST_WITH_RETURN(dev, file_priv);
1688
1689 /* Please don't send us buffers.
1690 */
1691 if (d->send_count != 0) {
1692 DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
1693 DRM_CURRENTPID, d->send_count);
1694 return -EINVAL;
1695 }
1696
1697 /* We'll send you buffers.
1698 */
1699 if (d->request_count < 0 || d->request_count > dma->buf_count) {
1700 DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
1701 DRM_CURRENTPID, d->request_count, dma->buf_count);
1702 return -EINVAL;
1703 }
1704
1705 d->granted_count = 0;
1706
1707 if (d->request_count) {
1708 ret = radeon_cp_get_buffers(dev, file_priv, d);
1709 }
1710
1711 return ret;
1712 }
1713
1714 int radeon_driver_load(struct drm_device *dev, unsigned long flags)
1715 {
1716 drm_radeon_private_t *dev_priv;
1717 int ret = 0;
1718
1719 dev_priv = drm_alloc(sizeof(drm_radeon_private_t), DRM_MEM_DRIVER);
1720 if (dev_priv == NULL)
1721 return -ENOMEM;
1722
1723 memset(dev_priv, 0, sizeof(drm_radeon_private_t));
1724 dev->dev_private = (void *)dev_priv;
1725 dev_priv->flags = flags;
1726
1727 switch (flags & RADEON_FAMILY_MASK) {
1728 case CHIP_R100:
1729 case CHIP_RV200:
1730 case CHIP_R200:
1731 case CHIP_R300:
1732 case CHIP_R350:
1733 case CHIP_R420:
1734 case CHIP_R423:
1735 case CHIP_RV410:
1736 case CHIP_RV515:
1737 case CHIP_R520:
1738 case CHIP_RV570:
1739 case CHIP_R580:
1740 dev_priv->flags |= RADEON_HAS_HIERZ;
1741 break;
1742 default:
1743 /* all other chips have no hierarchical z buffer */
1744 break;
1745 }
1746
1747 if (drm_device_is_agp(dev))
1748 dev_priv->flags |= RADEON_IS_AGP;
1749 else if (drm_device_is_pcie(dev))
1750 dev_priv->flags |= RADEON_IS_PCIE;
1751 else
1752 dev_priv->flags |= RADEON_IS_PCI;
1753
1754 ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
1755 drm_get_resource_len(dev, 2), _DRM_REGISTERS,
1756 _DRM_READ_ONLY | _DRM_DRIVER, &dev_priv->mmio);
1757 if (ret != 0)
1758 return ret;
1759
1760 ret = drm_vblank_init(dev, 2);
1761 if (ret) {
1762 radeon_driver_unload(dev);
1763 return ret;
1764 }
1765
1766 DRM_DEBUG("%s card detected\n",
1767 ((dev_priv->flags & RADEON_IS_AGP) ? "AGP" : (((dev_priv->flags & RADEON_IS_PCIE) ? "PCIE" : "PCI"))));
1768 return ret;
1769 }
1770
1771 /* Create mappings for registers and framebuffer so userland doesn't necessarily
1772 * have to find them.
1773 */
1774 int radeon_driver_firstopen(struct drm_device *dev)
1775 {
1776 int ret;
1777 drm_local_map_t *map;
1778 drm_radeon_private_t *dev_priv = dev->dev_private;
1779
1780 dev_priv->gart_info.table_size = RADEON_PCIGART_TABLE_SIZE;
1781
1782 dev_priv->fb_aper_offset = drm_get_resource_start(dev, 0);
1783 ret = drm_addmap(dev, dev_priv->fb_aper_offset,
1784 drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER,
1785 _DRM_WRITE_COMBINING, &map);
1786 if (ret != 0)
1787 return ret;
1788
1789 return 0;
1790 }
1791
1792 int radeon_driver_unload(struct drm_device *dev)
1793 {
1794 drm_radeon_private_t *dev_priv = dev->dev_private;
1795
1796 DRM_DEBUG("\n");
1797
1798 drm_rmmap(dev, dev_priv->mmio);
1799
1800 drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
1801
1802 dev->dev_private = NULL;
1803 return 0;
1804 }
Linux with added FPC-III support