File: /usr/src/linux/drivers/char/drm/mga_state.c
1 /* mga_state.c -- State support for MGA G200/G400 -*- linux-c -*-
2 * Created: Thu Jan 27 02:53:43 2000 by jhartmann@precisioninsight.com
3 *
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * VA LINUX SYSTEMS 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
25 * OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * Authors:
28 * Jeff Hartmann <jhartmann@valinux.com>
29 * Keith Whitwell <keithw@valinux.com>
30 *
31 * Rewritten by:
32 * Gareth Hughes <gareth@valinux.com>
33 */
34
35 #define __NO_VERSION__
36 #include "mga.h"
37 #include "drmP.h"
38 #include "mga_drv.h"
39 #include "drm.h"
40
41
42 /* ================================================================
43 * DMA hardware state programming functions
44 */
45
46 static void mga_emit_clip_rect( drm_mga_private_t *dev_priv,
47 drm_clip_rect_t *box )
48 {
49 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
50 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
51 unsigned int pitch = dev_priv->front_pitch;
52 DMA_LOCALS;
53
54 BEGIN_DMA( 2 );
55
56 /* Force reset of DWGCTL on G400 (eliminates clip disable bit).
57 */
58 if ( dev_priv->chipset == MGA_CARD_TYPE_G400 ) {
59 DMA_BLOCK( MGA_DWGCTL, ctx->dwgctl,
60 MGA_LEN + MGA_EXEC, 0x80000000,
61 MGA_DWGCTL, ctx->dwgctl,
62 MGA_LEN + MGA_EXEC, 0x80000000 );
63 }
64 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
65 MGA_CXBNDRY, (box->x2 << 16) | box->x1,
66 MGA_YTOP, box->y1 * pitch,
67 MGA_YBOT, box->y2 * pitch );
68
69 ADVANCE_DMA();
70 }
71
72 static inline void mga_g200_emit_context( drm_mga_private_t *dev_priv )
73 {
74 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
75 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
76 DMA_LOCALS;
77
78 BEGIN_DMA( 3 );
79
80 DMA_BLOCK( MGA_DSTORG, ctx->dstorg,
81 MGA_MACCESS, ctx->maccess,
82 MGA_PLNWT, ctx->plnwt,
83 MGA_DWGCTL, ctx->dwgctl );
84
85 DMA_BLOCK( MGA_ALPHACTRL, ctx->alphactrl,
86 MGA_FOGCOL, ctx->fogcolor,
87 MGA_WFLAG, ctx->wflag,
88 MGA_ZORG, dev_priv->depth_offset );
89
90 DMA_BLOCK( MGA_FCOL, ctx->fcol,
91 MGA_DMAPAD, 0x00000000,
92 MGA_DMAPAD, 0x00000000,
93 MGA_DMAPAD, 0x00000000 );
94
95 ADVANCE_DMA();
96 }
97
98 static inline void mga_g400_emit_context( drm_mga_private_t *dev_priv )
99 {
100 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
101 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
102 DMA_LOCALS;
103
104 BEGIN_DMA( 4 );
105
106 DMA_BLOCK( MGA_DSTORG, ctx->dstorg,
107 MGA_MACCESS, ctx->maccess,
108 MGA_PLNWT, ctx->plnwt,
109 MGA_DWGCTL, ctx->dwgctl );
110
111 DMA_BLOCK( MGA_ALPHACTRL, ctx->alphactrl,
112 MGA_FOGCOL, ctx->fogcolor,
113 MGA_WFLAG, ctx->wflag,
114 MGA_ZORG, dev_priv->depth_offset );
115
116 DMA_BLOCK( MGA_WFLAG1, ctx->wflag,
117 MGA_TDUALSTAGE0, ctx->tdualstage0,
118 MGA_TDUALSTAGE1, ctx->tdualstage1,
119 MGA_FCOL, ctx->fcol );
120
121 DMA_BLOCK( MGA_STENCIL, ctx->stencil,
122 MGA_STENCILCTL, ctx->stencilctl,
123 MGA_DMAPAD, 0x00000000,
124 MGA_DMAPAD, 0x00000000 );
125
126 ADVANCE_DMA();
127 }
128
129 static inline void mga_g200_emit_tex0( drm_mga_private_t *dev_priv )
130 {
131 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
132 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[0];
133 DMA_LOCALS;
134
135 BEGIN_DMA( 4 );
136
137 DMA_BLOCK( MGA_TEXCTL2, tex->texctl2,
138 MGA_TEXCTL, tex->texctl,
139 MGA_TEXFILTER, tex->texfilter,
140 MGA_TEXBORDERCOL, tex->texbordercol );
141
142 DMA_BLOCK( MGA_TEXORG, tex->texorg,
143 MGA_TEXORG1, tex->texorg1,
144 MGA_TEXORG2, tex->texorg2,
145 MGA_TEXORG3, tex->texorg3 );
146
147 DMA_BLOCK( MGA_TEXORG4, tex->texorg4,
148 MGA_TEXWIDTH, tex->texwidth,
149 MGA_TEXHEIGHT, tex->texheight,
150 MGA_WR24, tex->texwidth );
151
152 DMA_BLOCK( MGA_WR34, tex->texheight,
153 MGA_TEXTRANS, 0x0000ffff,
154 MGA_TEXTRANSHIGH, 0x0000ffff,
155 MGA_DMAPAD, 0x00000000 );
156
157 ADVANCE_DMA();
158 }
159
160 static inline void mga_g400_emit_tex0( drm_mga_private_t *dev_priv )
161 {
162 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
163 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[0];
164 DMA_LOCALS;
165
166 BEGIN_DMA( 6 );
167
168 DMA_BLOCK( MGA_TEXCTL2, tex->texctl2 | MGA_G400_TC2_MAGIC,
169 MGA_TEXCTL, tex->texctl,
170 MGA_TEXFILTER, tex->texfilter,
171 MGA_TEXBORDERCOL, tex->texbordercol );
172
173 DMA_BLOCK( MGA_TEXORG, tex->texorg,
174 MGA_TEXORG1, tex->texorg1,
175 MGA_TEXORG2, tex->texorg2,
176 MGA_TEXORG3, tex->texorg3 );
177
178 DMA_BLOCK( MGA_TEXORG4, tex->texorg4,
179 MGA_TEXWIDTH, tex->texwidth,
180 MGA_TEXHEIGHT, tex->texheight,
181 MGA_WR49, 0x00000000 );
182
183 DMA_BLOCK( MGA_WR57, 0x00000000,
184 MGA_WR53, 0x00000000,
185 MGA_WR61, 0x00000000,
186 MGA_WR52, MGA_G400_WR_MAGIC );
187
188 DMA_BLOCK( MGA_WR60, MGA_G400_WR_MAGIC,
189 MGA_WR54, tex->texwidth | MGA_G400_WR_MAGIC,
190 MGA_WR62, tex->texheight | MGA_G400_WR_MAGIC,
191 MGA_DMAPAD, 0x00000000 );
192
193 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
194 MGA_DMAPAD, 0x00000000,
195 MGA_TEXTRANS, 0x0000ffff,
196 MGA_TEXTRANSHIGH, 0x0000ffff );
197
198 ADVANCE_DMA();
199 }
200
201 static inline void mga_g400_emit_tex1( drm_mga_private_t *dev_priv )
202 {
203 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
204 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[1];
205 DMA_LOCALS;
206
207 BEGIN_DMA( 5 );
208
209 DMA_BLOCK( MGA_TEXCTL2, (tex->texctl2 |
210 MGA_MAP1_ENABLE |
211 MGA_G400_TC2_MAGIC),
212 MGA_TEXCTL, tex->texctl,
213 MGA_TEXFILTER, tex->texfilter,
214 MGA_TEXBORDERCOL, tex->texbordercol );
215
216 DMA_BLOCK( MGA_TEXORG, tex->texorg,
217 MGA_TEXORG1, tex->texorg1,
218 MGA_TEXORG2, tex->texorg2,
219 MGA_TEXORG3, tex->texorg3 );
220
221 DMA_BLOCK( MGA_TEXORG4, tex->texorg4,
222 MGA_TEXWIDTH, tex->texwidth,
223 MGA_TEXHEIGHT, tex->texheight,
224 MGA_WR49, 0x00000000 );
225
226 DMA_BLOCK( MGA_WR57, 0x00000000,
227 MGA_WR53, 0x00000000,
228 MGA_WR61, 0x00000000,
229 MGA_WR52, tex->texwidth | MGA_G400_WR_MAGIC );
230
231 DMA_BLOCK( MGA_WR60, tex->texheight | MGA_G400_WR_MAGIC,
232 MGA_TEXTRANS, 0x0000ffff,
233 MGA_TEXTRANSHIGH, 0x0000ffff,
234 MGA_TEXCTL2, tex->texctl2 | MGA_G400_TC2_MAGIC );
235
236 ADVANCE_DMA();
237 }
238
239 static inline void mga_g200_emit_pipe( drm_mga_private_t *dev_priv )
240 {
241 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
242 unsigned int pipe = sarea_priv->warp_pipe;
243 DMA_LOCALS;
244
245 BEGIN_DMA( 3 );
246
247 DMA_BLOCK( MGA_WIADDR, MGA_WMODE_SUSPEND,
248 MGA_WVRTXSZ, 0x00000007,
249 MGA_WFLAG, 0x00000000,
250 MGA_WR24, 0x00000000 );
251
252 DMA_BLOCK( MGA_WR25, 0x00000100,
253 MGA_WR34, 0x00000000,
254 MGA_WR42, 0x0000ffff,
255 MGA_WR60, 0x0000ffff );
256
257 /* Padding required to to hardware bug.
258 */
259 DMA_BLOCK( MGA_DMAPAD, 0xffffffff,
260 MGA_DMAPAD, 0xffffffff,
261 MGA_DMAPAD, 0xffffffff,
262 MGA_WIADDR, (dev_priv->warp_pipe_phys[pipe] |
263 MGA_WMODE_START |
264 MGA_WAGP_ENABLE) );
265
266 ADVANCE_DMA();
267 }
268
269 static inline void mga_g400_emit_pipe( drm_mga_private_t *dev_priv )
270 {
271 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
272 unsigned int pipe = sarea_priv->warp_pipe;
273 DMA_LOCALS;
274
275 BEGIN_DMA( 10 );
276
277 DMA_BLOCK( MGA_WIADDR2, MGA_WMODE_SUSPEND,
278 MGA_DMAPAD, 0x00000000,
279 MGA_DMAPAD, 0x00000000,
280 MGA_DMAPAD, 0x00000000 );
281
282 if ( pipe & MGA_T2 ) {
283 DMA_BLOCK( MGA_WVRTXSZ, 0x00001e09,
284 MGA_DMAPAD, 0x00000000,
285 MGA_DMAPAD, 0x00000000,
286 MGA_DMAPAD, 0x00000000 );
287
288 DMA_BLOCK( MGA_WACCEPTSEQ, 0x00000000,
289 MGA_WACCEPTSEQ, 0x00000000,
290 MGA_WACCEPTSEQ, 0x00000000,
291 MGA_WACCEPTSEQ, 0x1e000000 );
292 } else {
293 if ( dev_priv->warp_pipe & MGA_T2 ) {
294 /* Flush the WARP pipe */
295 DMA_BLOCK( MGA_YDST, 0x00000000,
296 MGA_FXLEFT, 0x00000000,
297 MGA_FXRIGHT, 0x00000001,
298 MGA_DWGCTL, MGA_DWGCTL_FLUSH );
299
300 DMA_BLOCK( MGA_LEN + MGA_EXEC, 0x00000001,
301 MGA_DWGSYNC, 0x00007000,
302 MGA_TEXCTL2, MGA_G400_TC2_MAGIC,
303 MGA_LEN + MGA_EXEC, 0x00000000 );
304
305 DMA_BLOCK( MGA_TEXCTL2, (MGA_DUALTEX |
306 MGA_G400_TC2_MAGIC),
307 MGA_LEN + MGA_EXEC, 0x00000000,
308 MGA_TEXCTL2, MGA_G400_TC2_MAGIC,
309 MGA_DMAPAD, 0x00000000 );
310 }
311
312 DMA_BLOCK( MGA_WVRTXSZ, 0x00001807,
313 MGA_DMAPAD, 0x00000000,
314 MGA_DMAPAD, 0x00000000,
315 MGA_DMAPAD, 0x00000000 );
316
317 DMA_BLOCK( MGA_WACCEPTSEQ, 0x00000000,
318 MGA_WACCEPTSEQ, 0x00000000,
319 MGA_WACCEPTSEQ, 0x00000000,
320 MGA_WACCEPTSEQ, 0x18000000 );
321 }
322
323 DMA_BLOCK( MGA_WFLAG, 0x00000000,
324 MGA_WFLAG1, 0x00000000,
325 MGA_WR56, MGA_G400_WR56_MAGIC,
326 MGA_DMAPAD, 0x00000000 );
327
328 DMA_BLOCK( MGA_WR49, 0x00000000, /* tex0 */
329 MGA_WR57, 0x00000000, /* tex0 */
330 MGA_WR53, 0x00000000, /* tex1 */
331 MGA_WR61, 0x00000000 ); /* tex1 */
332
333 DMA_BLOCK( MGA_WR54, MGA_G400_WR_MAGIC, /* tex0 width */
334 MGA_WR62, MGA_G400_WR_MAGIC, /* tex0 height */
335 MGA_WR52, MGA_G400_WR_MAGIC, /* tex1 width */
336 MGA_WR60, MGA_G400_WR_MAGIC ); /* tex1 height */
337
338 /* Padding required to to hardware bug */
339 DMA_BLOCK( MGA_DMAPAD, 0xffffffff,
340 MGA_DMAPAD, 0xffffffff,
341 MGA_DMAPAD, 0xffffffff,
342 MGA_WIADDR2, (dev_priv->warp_pipe_phys[pipe] |
343 MGA_WMODE_START |
344 MGA_WAGP_ENABLE) );
345
346 ADVANCE_DMA();
347 }
348
349 static void mga_g200_emit_state( drm_mga_private_t *dev_priv )
350 {
351 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
352 unsigned int dirty = sarea_priv->dirty;
353
354 if ( sarea_priv->warp_pipe != dev_priv->warp_pipe ) {
355 mga_g200_emit_pipe( dev_priv );
356 dev_priv->warp_pipe = sarea_priv->warp_pipe;
357 }
358
359 if ( dirty & MGA_UPLOAD_CONTEXT ) {
360 mga_g200_emit_context( dev_priv );
361 sarea_priv->dirty &= ~MGA_UPLOAD_CONTEXT;
362 }
363
364 if ( dirty & MGA_UPLOAD_TEX0 ) {
365 mga_g200_emit_tex0( dev_priv );
366 sarea_priv->dirty &= ~MGA_UPLOAD_TEX0;
367 }
368 }
369
370 static void mga_g400_emit_state( drm_mga_private_t *dev_priv )
371 {
372 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
373 unsigned int dirty = sarea_priv->dirty;
374 int multitex = sarea_priv->warp_pipe & MGA_T2;
375
376 if ( sarea_priv->warp_pipe != dev_priv->warp_pipe ) {
377 mga_g400_emit_pipe( dev_priv );
378 dev_priv->warp_pipe = sarea_priv->warp_pipe;
379 }
380
381 if ( dirty & MGA_UPLOAD_CONTEXT ) {
382 mga_g400_emit_context( dev_priv );
383 sarea_priv->dirty &= ~MGA_UPLOAD_CONTEXT;
384 }
385
386 if ( dirty & MGA_UPLOAD_TEX0 ) {
387 mga_g400_emit_tex0( dev_priv );
388 sarea_priv->dirty &= ~MGA_UPLOAD_TEX0;
389 }
390
391 if ( (dirty & MGA_UPLOAD_TEX1) && multitex ) {
392 mga_g400_emit_tex1( dev_priv );
393 sarea_priv->dirty &= ~MGA_UPLOAD_TEX1;
394 }
395 }
396
397
398 /* ================================================================
399 * SAREA state verification
400 */
401
402 /* Disallow all write destinations except the front and backbuffer.
403 */
404 static int mga_verify_context( drm_mga_private_t *dev_priv )
405 {
406 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
407 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
408
409 if ( ctx->dstorg != dev_priv->front_offset &&
410 ctx->dstorg != dev_priv->back_offset ) {
411 DRM_ERROR( "*** bad DSTORG: %x (front %x, back %x)\n\n",
412 ctx->dstorg, dev_priv->front_offset,
413 dev_priv->back_offset );
414 ctx->dstorg = 0;
415 return -EINVAL;
416 }
417
418 return 0;
419 }
420
421 /* Disallow texture reads from PCI space.
422 */
423 static int mga_verify_tex( drm_mga_private_t *dev_priv, int unit )
424 {
425 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
426 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[unit];
427 unsigned int org;
428
429 org = tex->texorg & (MGA_TEXORGMAP_MASK | MGA_TEXORGACC_MASK);
430
431 if ( org == (MGA_TEXORGMAP_SYSMEM | MGA_TEXORGACC_PCI) ) {
432 DRM_ERROR( "*** bad TEXORG: 0x%x, unit %d\n",
433 tex->texorg, unit );
434 tex->texorg = 0;
435 return -EINVAL;
436 }
437
438 return 0;
439 }
440
441 static int mga_verify_state( drm_mga_private_t *dev_priv )
442 {
443 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
444 unsigned int dirty = sarea_priv->dirty;
445 int ret = 0;
446
447 if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS )
448 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
449
450 if ( dirty & MGA_UPLOAD_CONTEXT )
451 ret |= mga_verify_context( dev_priv );
452
453 if ( dirty & MGA_UPLOAD_TEX0 )
454 ret |= mga_verify_tex( dev_priv, 0 );
455
456 if ( dev_priv->chipset == MGA_CARD_TYPE_G400 ) {
457 if ( dirty & MGA_UPLOAD_TEX1 )
458 ret |= mga_verify_tex( dev_priv, 1 );
459
460 if ( dirty & MGA_UPLOAD_PIPE )
461 ret |= ( sarea_priv->warp_pipe > MGA_MAX_G400_PIPES );
462 } else {
463 if ( dirty & MGA_UPLOAD_PIPE )
464 ret |= ( sarea_priv->warp_pipe > MGA_MAX_G200_PIPES );
465 }
466
467 return ( ret == 0 );
468 }
469
470 static int mga_verify_iload( drm_mga_private_t *dev_priv,
471 unsigned int dstorg, unsigned int length )
472 {
473 if ( dstorg < dev_priv->texture_offset ||
474 dstorg + length > (dev_priv->texture_offset +
475 dev_priv->texture_size) ) {
476 DRM_ERROR( "*** bad iload DSTORG: 0x%x\n", dstorg );
477 return -EINVAL;
478 }
479
480 if ( length & MGA_ILOAD_MASK ) {
481 DRM_ERROR( "*** bad iload length: 0x%x\n",
482 length & MGA_ILOAD_MASK );
483 return -EINVAL;
484 }
485
486 return 0;
487 }
488
489 static int mga_verify_blit( drm_mga_private_t *dev_priv,
490 unsigned int srcorg, unsigned int dstorg )
491 {
492 if ( (srcorg & 0x3) == (MGA_SRCACC_PCI | MGA_SRCMAP_SYSMEM) ||
493 (dstorg & 0x3) == (MGA_SRCACC_PCI | MGA_SRCMAP_SYSMEM) ) {
494 DRM_ERROR( "*** bad blit: src=0x%x dst=0x%x\n",
495 srcorg, dstorg );
496 return -EINVAL;
497 }
498 return 0;
499 }
500
501
502 /* ================================================================
503 *
504 */
505
506 static void mga_dma_dispatch_clear( drm_device_t *dev,
507 drm_mga_clear_t *clear )
508 {
509 drm_mga_private_t *dev_priv = dev->dev_private;
510 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
511 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
512 drm_clip_rect_t *pbox = sarea_priv->boxes;
513 int nbox = sarea_priv->nbox;
514 int i;
515 DMA_LOCALS;
516 DRM_DEBUG( __FUNCTION__ ":\n" );
517
518 BEGIN_DMA( 1 );
519
520 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
521 MGA_DMAPAD, 0x00000000,
522 MGA_DWGSYNC, 0x00007100,
523 MGA_DWGSYNC, 0x00007000 );
524
525 ADVANCE_DMA();
526
527 for ( i = 0 ; i < nbox ; i++ ) {
528 drm_clip_rect_t *box = &pbox[i];
529 u32 height = box->y2 - box->y1;
530
531 DRM_DEBUG( " from=%d,%d to=%d,%d\n",
532 box->x1, box->y1, box->x2, box->y2 );
533
534 if ( clear->flags & MGA_FRONT ) {
535 BEGIN_DMA( 2 );
536
537 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
538 MGA_PLNWT, clear->color_mask,
539 MGA_YDSTLEN, (box->y1 << 16) | height,
540 MGA_FXBNDRY, (box->x2 << 16) | box->x1 );
541
542 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
543 MGA_FCOL, clear->clear_color,
544 MGA_DSTORG, dev_priv->front_offset,
545 MGA_DWGCTL + MGA_EXEC,
546 dev_priv->clear_cmd );
547
548 ADVANCE_DMA();
549 }
550
551
552 if ( clear->flags & MGA_BACK ) {
553 BEGIN_DMA( 2 );
554
555 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
556 MGA_PLNWT, clear->color_mask,
557 MGA_YDSTLEN, (box->y1 << 16) | height,
558 MGA_FXBNDRY, (box->x2 << 16) | box->x1 );
559
560 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
561 MGA_FCOL, clear->clear_color,
562 MGA_DSTORG, dev_priv->back_offset,
563 MGA_DWGCTL + MGA_EXEC,
564 dev_priv->clear_cmd );
565
566 ADVANCE_DMA();
567 }
568
569 if ( clear->flags & MGA_DEPTH ) {
570 BEGIN_DMA( 2 );
571
572 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
573 MGA_PLNWT, clear->depth_mask,
574 MGA_YDSTLEN, (box->y1 << 16) | height,
575 MGA_FXBNDRY, (box->x2 << 16) | box->x1 );
576
577 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
578 MGA_FCOL, clear->clear_depth,
579 MGA_DSTORG, dev_priv->depth_offset,
580 MGA_DWGCTL + MGA_EXEC,
581 dev_priv->clear_cmd );
582
583 ADVANCE_DMA();
584 }
585
586 }
587
588 BEGIN_DMA( 1 );
589
590 /* Force reset of DWGCTL */
591 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
592 MGA_DMAPAD, 0x00000000,
593 MGA_PLNWT, ctx->plnwt,
594 MGA_DWGCTL, ctx->dwgctl );
595
596 ADVANCE_DMA();
597
598 FLUSH_DMA();
599 }
600
601 static void mga_dma_dispatch_swap( drm_device_t *dev )
602 {
603 drm_mga_private_t *dev_priv = dev->dev_private;
604 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
605 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
606 drm_clip_rect_t *pbox = sarea_priv->boxes;
607 int nbox = sarea_priv->nbox;
608 int i;
609 DMA_LOCALS;
610 DRM_DEBUG( __FUNCTION__ ":\n" );
611
612 sarea_priv->last_frame.head = dev_priv->prim.tail;
613 sarea_priv->last_frame.wrap = dev_priv->prim.last_wrap;
614
615 BEGIN_DMA( 4 + nbox );
616
617 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
618 MGA_DMAPAD, 0x00000000,
619 MGA_DWGSYNC, 0x00007100,
620 MGA_DWGSYNC, 0x00007000 );
621
622 DMA_BLOCK( MGA_DSTORG, dev_priv->front_offset,
623 MGA_MACCESS, dev_priv->maccess,
624 MGA_SRCORG, dev_priv->back_offset,
625 MGA_AR5, dev_priv->front_pitch );
626
627 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
628 MGA_DMAPAD, 0x00000000,
629 MGA_PLNWT, 0xffffffff,
630 MGA_DWGCTL, MGA_DWGCTL_COPY );
631
632 for ( i = 0 ; i < nbox ; i++ ) {
633 drm_clip_rect_t *box = &pbox[i];
634 u32 height = box->y2 - box->y1;
635 u32 start = box->y1 * dev_priv->front_pitch;
636
637 DRM_DEBUG( " from=%d,%d to=%d,%d\n",
638 box->x1, box->y1, box->x2, box->y2 );
639
640 DMA_BLOCK( MGA_AR0, start + box->x2 - 1,
641 MGA_AR3, start + box->x1,
642 MGA_FXBNDRY, ((box->x2 - 1) << 16) | box->x1,
643 MGA_YDSTLEN + MGA_EXEC,
644 (box->y1 << 16) | height );
645 }
646
647 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
648 MGA_PLNWT, ctx->plnwt,
649 MGA_SRCORG, dev_priv->front_offset,
650 MGA_DWGCTL, ctx->dwgctl );
651
652 ADVANCE_DMA();
653
654 FLUSH_DMA();
655
656 DRM_DEBUG( "%s... done.\n", __FUNCTION__ );
657 }
658
659 static void mga_dma_dispatch_vertex( drm_device_t *dev, drm_buf_t *buf )
660 {
661 drm_mga_private_t *dev_priv = dev->dev_private;
662 drm_mga_buf_priv_t *buf_priv = buf->dev_private;
663 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
664 u32 address = (u32) buf->bus_address;
665 u32 length = (u32) buf->used;
666 int i = 0;
667 DMA_LOCALS;
668 DRM_DEBUG( "vertex: buf=%d used=%d\n", buf->idx, buf->used );
669
670 if ( buf->used ) {
671 buf_priv->dispatched = 1;
672
673 MGA_EMIT_STATE( dev_priv, sarea_priv->dirty );
674
675 do {
676 if ( i < sarea_priv->nbox ) {
677 mga_emit_clip_rect( dev_priv,
678 &sarea_priv->boxes[i] );
679 }
680
681 BEGIN_DMA( 1 );
682
683 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
684 MGA_DMAPAD, 0x00000000,
685 MGA_SECADDRESS, (address |
686 MGA_DMA_VERTEX),
687 MGA_SECEND, ((address + length) |
688 MGA_PAGPXFER) );
689
690 ADVANCE_DMA();
691 } while ( ++i < sarea_priv->nbox );
692 }
693
694 if ( buf_priv->discard ) {
695 AGE_BUFFER( buf_priv );
696 buf->pending = 0;
697 buf->used = 0;
698 buf_priv->dispatched = 0;
699
700 mga_freelist_put( dev, buf );
701 }
702
703 FLUSH_DMA();
704 }
705
706 static void mga_dma_dispatch_indices( drm_device_t *dev, drm_buf_t *buf,
707 unsigned int start, unsigned int end )
708 {
709 drm_mga_private_t *dev_priv = dev->dev_private;
710 drm_mga_buf_priv_t *buf_priv = buf->dev_private;
711 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
712 u32 address = (u32) buf->bus_address;
713 int i = 0;
714 DMA_LOCALS;
715 DRM_DEBUG( "indices: buf=%d start=%d end=%d\n", buf->idx, start, end );
716
717 if ( start != end ) {
718 buf_priv->dispatched = 1;
719
720 MGA_EMIT_STATE( dev_priv, sarea_priv->dirty );
721
722 do {
723 if ( i < sarea_priv->nbox ) {
724 mga_emit_clip_rect( dev_priv,
725 &sarea_priv->boxes[i] );
726 }
727
728 BEGIN_DMA( 1 );
729
730 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
731 MGA_DMAPAD, 0x00000000,
732 MGA_SETUPADDRESS, address + start,
733 MGA_SETUPEND, ((address + end) |
734 MGA_PAGPXFER) );
735
736 ADVANCE_DMA();
737 } while ( ++i < sarea_priv->nbox );
738 }
739
740 if ( buf_priv->discard ) {
741 AGE_BUFFER( buf_priv );
742 buf->pending = 0;
743 buf->used = 0;
744 buf_priv->dispatched = 0;
745
746 mga_freelist_put( dev, buf );
747 }
748
749 FLUSH_DMA();
750 }
751
752 /* This copies a 64 byte aligned agp region to the frambuffer with a
753 * standard blit, the ioctl needs to do checking.
754 */
755 static void mga_dma_dispatch_iload( drm_device_t *dev, drm_buf_t *buf,
756 unsigned int dstorg, unsigned int length )
757 {
758 drm_mga_private_t *dev_priv = dev->dev_private;
759 drm_mga_buf_priv_t *buf_priv = buf->dev_private;
760 drm_mga_context_regs_t *ctx = &dev_priv->sarea_priv->context_state;
761 u32 srcorg = buf->bus_address | MGA_SRCACC_AGP | MGA_SRCMAP_SYSMEM;
762 u32 y2;
763 DMA_LOCALS;
764 DRM_DEBUG( "%s: buf=%d used=%d\n",
765 __FUNCTION__, buf->idx, buf->used );
766
767 y2 = length / 64;
768
769 BEGIN_DMA( 5 );
770
771 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
772 MGA_DMAPAD, 0x00000000,
773 MGA_DWGSYNC, 0x00007100,
774 MGA_DWGSYNC, 0x00007000 );
775
776 DMA_BLOCK( MGA_DSTORG, dstorg,
777 MGA_MACCESS, 0x00000000,
778 MGA_SRCORG, srcorg,
779 MGA_AR5, 64 );
780
781 DMA_BLOCK( MGA_PITCH, 64,
782 MGA_PLNWT, 0xffffffff,
783 MGA_DMAPAD, 0x00000000,
784 MGA_DWGCTL, MGA_DWGCTL_COPY );
785
786 DMA_BLOCK( MGA_AR0, 63,
787 MGA_AR3, 0,
788 MGA_FXBNDRY, (63 << 16) | 0,
789 MGA_YDSTLEN + MGA_EXEC, y2 );
790
791 DMA_BLOCK( MGA_PLNWT, ctx->plnwt,
792 MGA_SRCORG, dev_priv->front_offset,
793 MGA_PITCH, dev_priv->front_pitch,
794 MGA_DWGSYNC, 0x00007000 );
795
796 ADVANCE_DMA();
797
798 AGE_BUFFER( buf_priv );
799
800 buf->pending = 0;
801 buf->used = 0;
802 buf_priv->dispatched = 0;
803
804 mga_freelist_put( dev, buf );
805
806 FLUSH_DMA();
807 }
808
809 static void mga_dma_dispatch_blit( drm_device_t *dev,
810 drm_mga_blit_t *blit )
811 {
812 drm_mga_private_t *dev_priv = dev->dev_private;
813 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
814 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
815 drm_clip_rect_t *pbox = sarea_priv->boxes;
816 int nbox = sarea_priv->nbox;
817 u32 scandir = 0, i;
818 DMA_LOCALS;
819 DRM_DEBUG( __FUNCTION__ ":\n" );
820
821 BEGIN_DMA( 4 + nbox );
822
823 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
824 MGA_DMAPAD, 0x00000000,
825 MGA_DWGSYNC, 0x00007100,
826 MGA_DWGSYNC, 0x00007000 );
827
828 DMA_BLOCK( MGA_DWGCTL, MGA_DWGCTL_COPY,
829 MGA_PLNWT, blit->planemask,
830 MGA_SRCORG, blit->srcorg,
831 MGA_DSTORG, blit->dstorg );
832
833 DMA_BLOCK( MGA_SGN, scandir,
834 MGA_MACCESS, dev_priv->maccess,
835 MGA_AR5, blit->ydir * blit->src_pitch,
836 MGA_PITCH, blit->dst_pitch );
837
838 for ( i = 0 ; i < nbox ; i++ ) {
839 int srcx = pbox[i].x1 + blit->delta_sx;
840 int srcy = pbox[i].y1 + blit->delta_sy;
841 int dstx = pbox[i].x1 + blit->delta_dx;
842 int dsty = pbox[i].y1 + blit->delta_dy;
843 int h = pbox[i].y2 - pbox[i].y1;
844 int w = pbox[i].x2 - pbox[i].x1 - 1;
845 int start;
846
847 if ( blit->ydir == -1 ) {
848 srcy = blit->height - srcy - 1;
849 }
850
851 start = srcy * blit->src_pitch + srcx;
852
853 DMA_BLOCK( MGA_AR0, start + w,
854 MGA_AR3, start,
855 MGA_FXBNDRY, ((dstx + w) << 16) | (dstx & 0xffff),
856 MGA_YDSTLEN + MGA_EXEC, (dsty << 16) | h );
857 }
858
859 /* Do something to flush AGP?
860 */
861
862 /* Force reset of DWGCTL */
863 DMA_BLOCK( MGA_DMAPAD, 0x00000000,
864 MGA_PLNWT, ctx->plnwt,
865 MGA_PITCH, dev_priv->front_pitch,
866 MGA_DWGCTL, ctx->dwgctl );
867
868 ADVANCE_DMA();
869 }
870
871
872 /* ================================================================
873 *
874 */
875
876 int mga_dma_clear( struct inode *inode, struct file *filp,
877 unsigned int cmd, unsigned long arg )
878 {
879 drm_file_t *priv = filp->private_data;
880 drm_device_t *dev = priv->dev;
881 drm_mga_private_t *dev_priv = dev->dev_private;
882 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
883 drm_mga_clear_t clear;
884
885 LOCK_TEST_WITH_RETURN( dev );
886
887 if ( copy_from_user( &clear, (drm_mga_clear_t *) arg, sizeof(clear) ) )
888 return -EFAULT;
889
890 if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS )
891 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
892
893 WRAP_TEST_WITH_RETURN( dev_priv );
894
895 mga_dma_dispatch_clear( dev, &clear );
896
897 /* Make sure we restore the 3D state next time.
898 */
899 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
900
901 return 0;
902 }
903
904 int mga_dma_swap( struct inode *inode, struct file *filp,
905 unsigned int cmd, unsigned long arg )
906 {
907 drm_file_t *priv = filp->private_data;
908 drm_device_t *dev = priv->dev;
909 drm_mga_private_t *dev_priv = dev->dev_private;
910 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
911
912 LOCK_TEST_WITH_RETURN( dev );
913
914 if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS )
915 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
916
917 WRAP_TEST_WITH_RETURN( dev_priv );
918
919 mga_dma_dispatch_swap( dev );
920
921 /* Make sure we restore the 3D state next time.
922 */
923 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
924
925 return 0;
926 }
927
928 int mga_dma_vertex( struct inode *inode, struct file *filp,
929 unsigned int cmd, unsigned long arg )
930 {
931 drm_file_t *priv = filp->private_data;
932 drm_device_t *dev = priv->dev;
933 drm_mga_private_t *dev_priv = dev->dev_private;
934 drm_device_dma_t *dma = dev->dma;
935 drm_buf_t *buf;
936 drm_mga_buf_priv_t *buf_priv;
937 drm_mga_vertex_t vertex;
938
939 LOCK_TEST_WITH_RETURN( dev );
940
941 if ( copy_from_user( &vertex,
942 (drm_mga_vertex_t *)arg,
943 sizeof(vertex) ) )
944 return -EFAULT;
945
946 if(vertex.idx < 0 || vertex.idx > dma->buf_count) return -EINVAL;
947 buf = dma->buflist[vertex.idx];
948 buf_priv = buf->dev_private;
949
950 buf->used = vertex.used;
951 buf_priv->discard = vertex.discard;
952
953 if ( !mga_verify_state( dev_priv ) ) {
954 if ( vertex.discard ) {
955 if ( buf_priv->dispatched == 1 )
956 AGE_BUFFER( buf_priv );
957 buf_priv->dispatched = 0;
958 mga_freelist_put( dev, buf );
959 }
960 return -EINVAL;
961 }
962
963 WRAP_TEST_WITH_RETURN( dev_priv );
964
965 mga_dma_dispatch_vertex( dev, buf );
966
967 return 0;
968 }
969
970 int mga_dma_indices( struct inode *inode, struct file *filp,
971 unsigned int cmd, unsigned long arg )
972 {
973 drm_file_t *priv = filp->private_data;
974 drm_device_t *dev = priv->dev;
975 drm_mga_private_t *dev_priv = dev->dev_private;
976 drm_device_dma_t *dma = dev->dma;
977 drm_buf_t *buf;
978 drm_mga_buf_priv_t *buf_priv;
979 drm_mga_indices_t indices;
980
981 LOCK_TEST_WITH_RETURN( dev );
982
983 if ( copy_from_user( &indices,
984 (drm_mga_indices_t *)arg,
985 sizeof(indices) ) )
986 return -EFAULT;
987
988 if(indices.idx < 0 || indices.idx > dma->buf_count) return -EINVAL;
989
990 buf = dma->buflist[indices.idx];
991 buf_priv = buf->dev_private;
992
993 buf_priv->discard = indices.discard;
994
995 if ( !mga_verify_state( dev_priv ) ) {
996 if ( indices.discard ) {
997 if ( buf_priv->dispatched == 1 )
998 AGE_BUFFER( buf_priv );
999 buf_priv->dispatched = 0;
1000 mga_freelist_put( dev, buf );
1001 }
1002 return -EINVAL;
1003 }
1004
1005 WRAP_TEST_WITH_RETURN( dev_priv );
1006
1007 mga_dma_dispatch_indices( dev, buf, indices.start, indices.end );
1008
1009 return 0;
1010 }
1011
1012 int mga_dma_iload( struct inode *inode, struct file *filp,
1013 unsigned int cmd, unsigned long arg )
1014 {
1015 drm_file_t *priv = filp->private_data;
1016 drm_device_t *dev = priv->dev;
1017 drm_device_dma_t *dma = dev->dma;
1018 drm_mga_private_t *dev_priv = dev->dev_private;
1019 drm_buf_t *buf;
1020 drm_mga_buf_priv_t *buf_priv;
1021 drm_mga_iload_t iload;
1022 DRM_DEBUG( __FUNCTION__ ":\n" );
1023
1024 LOCK_TEST_WITH_RETURN( dev );
1025
1026 if ( copy_from_user( &iload, (drm_mga_iload_t *)arg, sizeof(iload) ) )
1027 return -EFAULT;
1028
1029 #if 0
1030 if ( mga_do_wait_for_idle( dev_priv ) < 0 ) {
1031 if ( MGA_DMA_DEBUG )
1032 DRM_INFO( __FUNCTION__": -EBUSY\n" );
1033 return -EBUSY;
1034 }
1035 #endif
1036 if(iload.idx < 0 || iload.idx > dma->buf_count) return -EINVAL;
1037
1038 buf = dma->buflist[iload.idx];
1039 buf_priv = buf->dev_private;
1040
1041 if ( mga_verify_iload( dev_priv, iload.dstorg, iload.length ) ) {
1042 mga_freelist_put( dev, buf );
1043 return -EINVAL;
1044 }
1045
1046 WRAP_TEST_WITH_RETURN( dev_priv );
1047
1048 mga_dma_dispatch_iload( dev, buf, iload.dstorg, iload.length );
1049
1050 /* Make sure we restore the 3D state next time.
1051 */
1052 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
1053
1054 return 0;
1055 }
1056
1057 int mga_dma_blit( struct inode *inode, struct file *filp,
1058 unsigned int cmd, unsigned long arg )
1059 {
1060 drm_file_t *priv = filp->private_data;
1061 drm_device_t *dev = priv->dev;
1062 drm_mga_private_t *dev_priv = dev->dev_private;
1063 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
1064 drm_mga_blit_t blit;
1065 DRM_DEBUG( "%s\n", __FUNCTION__ );
1066
1067 LOCK_TEST_WITH_RETURN( dev );
1068
1069 if ( copy_from_user( &blit, (drm_mga_blit_t *)arg, sizeof(blit) ) )
1070 return -EFAULT;
1071
1072 if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS )
1073 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
1074
1075 if ( mga_verify_blit( dev_priv, blit.srcorg, blit.dstorg ) )
1076 return -EINVAL;
1077
1078 WRAP_TEST_WITH_RETURN( dev_priv );
1079
1080 mga_dma_dispatch_blit( dev, &blit );
1081
1082 /* Make sure we restore the 3D state next time.
1083 */
1084 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
1085
1086 return 0;
1087 }
1088