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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / gpu / drm / mga / mga_state.c
blob9ce2827f8c00d53a8b7a793f785024c846084d84
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 <keith@tungstengraphics.com>
30 *
31 * Rewritten by:
32 * Gareth Hughes <gareth@valinux.com>
33 */
34
35 #include "drmP.h"
36 #include "drm.h"
37 #include "mga_drm.h"
38 #include "mga_drv.h"
39
40 /* ================================================================
41 * DMA hardware state programming functions
42 */
43
44 static void mga_emit_clip_rect(drm_mga_private_t *dev_priv,
45 struct drm_clip_rect *box)
46 {
47 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
48 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
49 unsigned int pitch = dev_priv->front_pitch;
50 DMA_LOCALS;
51
52 BEGIN_DMA(2);
53
54 /* Force reset of DWGCTL on G400 (eliminates clip disable bit).
55 */
56 if (dev_priv->chipset >= MGA_CARD_TYPE_G400) {
57 DMA_BLOCK(MGA_DWGCTL, ctx->dwgctl,
58 MGA_LEN + MGA_EXEC, 0x80000000,
59 MGA_DWGCTL, ctx->dwgctl,
60 MGA_LEN + MGA_EXEC, 0x80000000);
61 }
62 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
63 MGA_CXBNDRY, ((box->x2 - 1) << 16) | box->x1,
64 MGA_YTOP, box->y1 * pitch, MGA_YBOT, (box->y2 - 1) * pitch);
65
66 ADVANCE_DMA();
67 }
68
69 static __inline__ void mga_g200_emit_context(drm_mga_private_t *dev_priv)
70 {
71 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
72 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
73 DMA_LOCALS;
74
75 BEGIN_DMA(3);
76
77 DMA_BLOCK(MGA_DSTORG, ctx->dstorg,
78 MGA_MACCESS, ctx->maccess,
79 MGA_PLNWT, ctx->plnwt, MGA_DWGCTL, ctx->dwgctl);
80
81 DMA_BLOCK(MGA_ALPHACTRL, ctx->alphactrl,
82 MGA_FOGCOL, ctx->fogcolor,
83 MGA_WFLAG, ctx->wflag, MGA_ZORG, dev_priv->depth_offset);
84
85 DMA_BLOCK(MGA_FCOL, ctx->fcol,
86 MGA_DMAPAD, 0x00000000,
87 MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000);
88
89 ADVANCE_DMA();
90 }
91
92 static __inline__ void mga_g400_emit_context(drm_mga_private_t *dev_priv)
93 {
94 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
95 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
96 DMA_LOCALS;
97
98 BEGIN_DMA(4);
99
100 DMA_BLOCK(MGA_DSTORG, ctx->dstorg,
101 MGA_MACCESS, ctx->maccess,
102 MGA_PLNWT, ctx->plnwt, MGA_DWGCTL, ctx->dwgctl);
103
104 DMA_BLOCK(MGA_ALPHACTRL, ctx->alphactrl,
105 MGA_FOGCOL, ctx->fogcolor,
106 MGA_WFLAG, ctx->wflag, MGA_ZORG, dev_priv->depth_offset);
107
108 DMA_BLOCK(MGA_WFLAG1, ctx->wflag,
109 MGA_TDUALSTAGE0, ctx->tdualstage0,
110 MGA_TDUALSTAGE1, ctx->tdualstage1, MGA_FCOL, ctx->fcol);
111
112 DMA_BLOCK(MGA_STENCIL, ctx->stencil,
113 MGA_STENCILCTL, ctx->stencilctl,
114 MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000);
115
116 ADVANCE_DMA();
117 }
118
119 static __inline__ void mga_g200_emit_tex0(drm_mga_private_t *dev_priv)
120 {
121 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
122 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[0];
123 DMA_LOCALS;
124
125 BEGIN_DMA(4);
126
127 DMA_BLOCK(MGA_TEXCTL2, tex->texctl2,
128 MGA_TEXCTL, tex->texctl,
129 MGA_TEXFILTER, tex->texfilter,
130 MGA_TEXBORDERCOL, tex->texbordercol);
131
132 DMA_BLOCK(MGA_TEXORG, tex->texorg,
133 MGA_TEXORG1, tex->texorg1,
134 MGA_TEXORG2, tex->texorg2, MGA_TEXORG3, tex->texorg3);
135
136 DMA_BLOCK(MGA_TEXORG4, tex->texorg4,
137 MGA_TEXWIDTH, tex->texwidth,
138 MGA_TEXHEIGHT, tex->texheight, MGA_WR24, tex->texwidth);
139
140 DMA_BLOCK(MGA_WR34, tex->texheight,
141 MGA_TEXTRANS, 0x0000ffff,
142 MGA_TEXTRANSHIGH, 0x0000ffff, MGA_DMAPAD, 0x00000000);
143
144 ADVANCE_DMA();
145 }
146
147 static __inline__ void mga_g400_emit_tex0(drm_mga_private_t *dev_priv)
148 {
149 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
150 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[0];
151 DMA_LOCALS;
152
153 /* printk("mga_g400_emit_tex0 %x %x %x\n", tex->texorg, */
154 /* tex->texctl, tex->texctl2); */
155
156 BEGIN_DMA(6);
157
158 DMA_BLOCK(MGA_TEXCTL2, tex->texctl2 | MGA_G400_TC2_MAGIC,
159 MGA_TEXCTL, tex->texctl,
160 MGA_TEXFILTER, tex->texfilter,
161 MGA_TEXBORDERCOL, tex->texbordercol);
162
163 DMA_BLOCK(MGA_TEXORG, tex->texorg,
164 MGA_TEXORG1, tex->texorg1,
165 MGA_TEXORG2, tex->texorg2, MGA_TEXORG3, tex->texorg3);
166
167 DMA_BLOCK(MGA_TEXORG4, tex->texorg4,
168 MGA_TEXWIDTH, tex->texwidth,
169 MGA_TEXHEIGHT, tex->texheight, MGA_WR49, 0x00000000);
170
171 DMA_BLOCK(MGA_WR57, 0x00000000,
172 MGA_WR53, 0x00000000,
173 MGA_WR61, 0x00000000, MGA_WR52, MGA_G400_WR_MAGIC);
174
175 DMA_BLOCK(MGA_WR60, MGA_G400_WR_MAGIC,
176 MGA_WR54, tex->texwidth | MGA_G400_WR_MAGIC,
177 MGA_WR62, tex->texheight | MGA_G400_WR_MAGIC,
178 MGA_DMAPAD, 0x00000000);
179
180 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
181 MGA_DMAPAD, 0x00000000,
182 MGA_TEXTRANS, 0x0000ffff, MGA_TEXTRANSHIGH, 0x0000ffff);
183
184 ADVANCE_DMA();
185 }
186
187 static __inline__ void mga_g400_emit_tex1(drm_mga_private_t *dev_priv)
188 {
189 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
190 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[1];
191 DMA_LOCALS;
192
193 /* printk("mga_g400_emit_tex1 %x %x %x\n", tex->texorg, */
194 /* tex->texctl, tex->texctl2); */
195
196 BEGIN_DMA(5);
197
198 DMA_BLOCK(MGA_TEXCTL2, (tex->texctl2 |
199 MGA_MAP1_ENABLE |
200 MGA_G400_TC2_MAGIC),
201 MGA_TEXCTL, tex->texctl,
202 MGA_TEXFILTER, tex->texfilter,
203 MGA_TEXBORDERCOL, tex->texbordercol);
204
205 DMA_BLOCK(MGA_TEXORG, tex->texorg,
206 MGA_TEXORG1, tex->texorg1,
207 MGA_TEXORG2, tex->texorg2, MGA_TEXORG3, tex->texorg3);
208
209 DMA_BLOCK(MGA_TEXORG4, tex->texorg4,
210 MGA_TEXWIDTH, tex->texwidth,
211 MGA_TEXHEIGHT, tex->texheight, MGA_WR49, 0x00000000);
212
213 DMA_BLOCK(MGA_WR57, 0x00000000,
214 MGA_WR53, 0x00000000,
215 MGA_WR61, 0x00000000,
216 MGA_WR52, tex->texwidth | MGA_G400_WR_MAGIC);
217
218 DMA_BLOCK(MGA_WR60, tex->texheight | MGA_G400_WR_MAGIC,
219 MGA_TEXTRANS, 0x0000ffff,
220 MGA_TEXTRANSHIGH, 0x0000ffff,
221 MGA_TEXCTL2, tex->texctl2 | MGA_G400_TC2_MAGIC);
222
223 ADVANCE_DMA();
224 }
225
226 static __inline__ void mga_g200_emit_pipe(drm_mga_private_t *dev_priv)
227 {
228 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
229 unsigned int pipe = sarea_priv->warp_pipe;
230 DMA_LOCALS;
231
232 BEGIN_DMA(3);
233
234 DMA_BLOCK(MGA_WIADDR, MGA_WMODE_SUSPEND,
235 MGA_WVRTXSZ, 0x00000007,
236 MGA_WFLAG, 0x00000000, MGA_WR24, 0x00000000);
237
238 DMA_BLOCK(MGA_WR25, 0x00000100,
239 MGA_WR34, 0x00000000,
240 MGA_WR42, 0x0000ffff, MGA_WR60, 0x0000ffff);
241
242 /* Padding required due to hardware bug.
243 */
244 DMA_BLOCK(MGA_DMAPAD, 0xffffffff,
245 MGA_DMAPAD, 0xffffffff,
246 MGA_DMAPAD, 0xffffffff,
247 MGA_WIADDR, (dev_priv->warp_pipe_phys[pipe] |
248 MGA_WMODE_START | dev_priv->wagp_enable));
249
250 ADVANCE_DMA();
251 }
252
253 static __inline__ void mga_g400_emit_pipe(drm_mga_private_t *dev_priv)
254 {
255 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
256 unsigned int pipe = sarea_priv->warp_pipe;
257 DMA_LOCALS;
258
259 /* printk("mga_g400_emit_pipe %x\n", pipe); */
260
261 BEGIN_DMA(10);
262
263 DMA_BLOCK(MGA_WIADDR2, MGA_WMODE_SUSPEND,
264 MGA_DMAPAD, 0x00000000,
265 MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000);
266
267 if (pipe & MGA_T2) {
268 DMA_BLOCK(MGA_WVRTXSZ, 0x00001e09,
269 MGA_DMAPAD, 0x00000000,
270 MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000);
271
272 DMA_BLOCK(MGA_WACCEPTSEQ, 0x00000000,
273 MGA_WACCEPTSEQ, 0x00000000,
274 MGA_WACCEPTSEQ, 0x00000000,
275 MGA_WACCEPTSEQ, 0x1e000000);
276 } else {
277 if (dev_priv->warp_pipe & MGA_T2) {
278 /* Flush the WARP pipe */
279 DMA_BLOCK(MGA_YDST, 0x00000000,
280 MGA_FXLEFT, 0x00000000,
281 MGA_FXRIGHT, 0x00000001,
282 MGA_DWGCTL, MGA_DWGCTL_FLUSH);
283
284 DMA_BLOCK(MGA_LEN + MGA_EXEC, 0x00000001,
285 MGA_DWGSYNC, 0x00007000,
286 MGA_TEXCTL2, MGA_G400_TC2_MAGIC,
287 MGA_LEN + MGA_EXEC, 0x00000000);
288
289 DMA_BLOCK(MGA_TEXCTL2, (MGA_DUALTEX |
290 MGA_G400_TC2_MAGIC),
291 MGA_LEN + MGA_EXEC, 0x00000000,
292 MGA_TEXCTL2, MGA_G400_TC2_MAGIC,
293 MGA_DMAPAD, 0x00000000);
294 }
295
296 DMA_BLOCK(MGA_WVRTXSZ, 0x00001807,
297 MGA_DMAPAD, 0x00000000,
298 MGA_DMAPAD, 0x00000000, MGA_DMAPAD, 0x00000000);
299
300 DMA_BLOCK(MGA_WACCEPTSEQ, 0x00000000,
301 MGA_WACCEPTSEQ, 0x00000000,
302 MGA_WACCEPTSEQ, 0x00000000,
303 MGA_WACCEPTSEQ, 0x18000000);
304 }
305
306 DMA_BLOCK(MGA_WFLAG, 0x00000000,
307 MGA_WFLAG1, 0x00000000,
308 MGA_WR56, MGA_G400_WR56_MAGIC, MGA_DMAPAD, 0x00000000);
309
310 DMA_BLOCK(MGA_WR49, 0x00000000, /* tex0 */
311 MGA_WR57, 0x00000000, /* tex0 */
312 MGA_WR53, 0x00000000, /* tex1 */
313 MGA_WR61, 0x00000000); /* tex1 */
314
315 DMA_BLOCK(MGA_WR54, MGA_G400_WR_MAGIC, /* tex0 width */
316 MGA_WR62, MGA_G400_WR_MAGIC, /* tex0 height */
317 MGA_WR52, MGA_G400_WR_MAGIC, /* tex1 width */
318 MGA_WR60, MGA_G400_WR_MAGIC); /* tex1 height */
319
320 /* Padding required due to hardware bug */
321 DMA_BLOCK(MGA_DMAPAD, 0xffffffff,
322 MGA_DMAPAD, 0xffffffff,
323 MGA_DMAPAD, 0xffffffff,
324 MGA_WIADDR2, (dev_priv->warp_pipe_phys[pipe] |
325 MGA_WMODE_START | dev_priv->wagp_enable));
326
327 ADVANCE_DMA();
328 }
329
330 static void mga_g200_emit_state(drm_mga_private_t *dev_priv)
331 {
332 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
333 unsigned int dirty = sarea_priv->dirty;
334
335 if (sarea_priv->warp_pipe != dev_priv->warp_pipe) {
336 mga_g200_emit_pipe(dev_priv);
337 dev_priv->warp_pipe = sarea_priv->warp_pipe;
338 }
339
340 if (dirty & MGA_UPLOAD_CONTEXT) {
341 mga_g200_emit_context(dev_priv);
342 sarea_priv->dirty &= ~MGA_UPLOAD_CONTEXT;
343 }
344
345 if (dirty & MGA_UPLOAD_TEX0) {
346 mga_g200_emit_tex0(dev_priv);
347 sarea_priv->dirty &= ~MGA_UPLOAD_TEX0;
348 }
349 }
350
351 static void mga_g400_emit_state(drm_mga_private_t *dev_priv)
352 {
353 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
354 unsigned int dirty = sarea_priv->dirty;
355 int multitex = sarea_priv->warp_pipe & MGA_T2;
356
357 if (sarea_priv->warp_pipe != dev_priv->warp_pipe) {
358 mga_g400_emit_pipe(dev_priv);
359 dev_priv->warp_pipe = sarea_priv->warp_pipe;
360 }
361
362 if (dirty & MGA_UPLOAD_CONTEXT) {
363 mga_g400_emit_context(dev_priv);
364 sarea_priv->dirty &= ~MGA_UPLOAD_CONTEXT;
365 }
366
367 if (dirty & MGA_UPLOAD_TEX0) {
368 mga_g400_emit_tex0(dev_priv);
369 sarea_priv->dirty &= ~MGA_UPLOAD_TEX0;
370 }
371
372 if ((dirty & MGA_UPLOAD_TEX1) && multitex) {
373 mga_g400_emit_tex1(dev_priv);
374 sarea_priv->dirty &= ~MGA_UPLOAD_TEX1;
375 }
376 }
377
378 /* ================================================================
379 * SAREA state verification
380 */
381
382 /* Disallow all write destinations except the front and backbuffer.
383 */
384 static int mga_verify_context(drm_mga_private_t *dev_priv)
385 {
386 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
387 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
388
389 if (ctx->dstorg != dev_priv->front_offset &&
390 ctx->dstorg != dev_priv->back_offset) {
391 DRM_ERROR("*** bad DSTORG: %x (front %x, back %x)\n\n",
392 ctx->dstorg, dev_priv->front_offset,
393 dev_priv->back_offset);
394 ctx->dstorg = 0;
395 return -EINVAL;
396 }
397
398 return 0;
399 }
400
401 /* Disallow texture reads from PCI space.
402 */
403 static int mga_verify_tex(drm_mga_private_t *dev_priv, int unit)
404 {
405 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
406 drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[unit];
407 unsigned int org;
408
409 org = tex->texorg & (MGA_TEXORGMAP_MASK | MGA_TEXORGACC_MASK);
410
411 if (org == (MGA_TEXORGMAP_SYSMEM | MGA_TEXORGACC_PCI)) {
412 DRM_ERROR("*** bad TEXORG: 0x%x, unit %d\n", tex->texorg, unit);
413 tex->texorg = 0;
414 return -EINVAL;
415 }
416
417 return 0;
418 }
419
420 static int mga_verify_state(drm_mga_private_t *dev_priv)
421 {
422 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
423 unsigned int dirty = sarea_priv->dirty;
424 int ret = 0;
425
426 if (sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS)
427 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
428
429 if (dirty & MGA_UPLOAD_CONTEXT)
430 ret |= mga_verify_context(dev_priv);
431
432 if (dirty & MGA_UPLOAD_TEX0)
433 ret |= mga_verify_tex(dev_priv, 0);
434
435 if (dev_priv->chipset >= MGA_CARD_TYPE_G400) {
436 if (dirty & MGA_UPLOAD_TEX1)
437 ret |= mga_verify_tex(dev_priv, 1);
438
439 if (dirty & MGA_UPLOAD_PIPE)
440 ret |= (sarea_priv->warp_pipe > MGA_MAX_G400_PIPES);
441 } else {
442 if (dirty & MGA_UPLOAD_PIPE)
443 ret |= (sarea_priv->warp_pipe > MGA_MAX_G200_PIPES);
444 }
445
446 return (ret == 0);
447 }
448
449 static int mga_verify_iload(drm_mga_private_t *dev_priv,
450 unsigned int dstorg, unsigned int length)
451 {
452 if (dstorg < dev_priv->texture_offset ||
453 dstorg + length > (dev_priv->texture_offset +
454 dev_priv->texture_size)) {
455 DRM_ERROR("*** bad iload DSTORG: 0x%x\n", dstorg);
456 return -EINVAL;
457 }
458
459 if (length & MGA_ILOAD_MASK) {
460 DRM_ERROR("*** bad iload length: 0x%x\n",
461 length & MGA_ILOAD_MASK);
462 return -EINVAL;
463 }
464
465 return 0;
466 }
467
468 static int mga_verify_blit(drm_mga_private_t *dev_priv,
469 unsigned int srcorg, unsigned int dstorg)
470 {
471 if ((srcorg & 0x3) == (MGA_SRCACC_PCI | MGA_SRCMAP_SYSMEM) ||
472 (dstorg & 0x3) == (MGA_SRCACC_PCI | MGA_SRCMAP_SYSMEM)) {
473 DRM_ERROR("*** bad blit: src=0x%x dst=0x%x\n", srcorg, dstorg);
474 return -EINVAL;
475 }
476 return 0;
477 }
478
479 /* ================================================================
480 *
481 */
482
483 static void mga_dma_dispatch_clear(struct drm_device *dev, drm_mga_clear_t *clear)
484 {
485 drm_mga_private_t *dev_priv = dev->dev_private;
486 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
487 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
488 struct drm_clip_rect *pbox = sarea_priv->boxes;
489 int nbox = sarea_priv->nbox;
490 int i;
491 DMA_LOCALS;
492 DRM_DEBUG("\n");
493
494 BEGIN_DMA(1);
495
496 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
497 MGA_DMAPAD, 0x00000000,
498 MGA_DWGSYNC, 0x00007100, MGA_DWGSYNC, 0x00007000);
499
500 ADVANCE_DMA();
501
502 for (i = 0; i < nbox; i++) {
503 struct drm_clip_rect *box = &pbox[i];
504 u32 height = box->y2 - box->y1;
505
506 DRM_DEBUG(" from=%d,%d to=%d,%d\n",
507 box->x1, box->y1, box->x2, box->y2);
508
509 if (clear->flags & MGA_FRONT) {
510 BEGIN_DMA(2);
511
512 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
513 MGA_PLNWT, clear->color_mask,
514 MGA_YDSTLEN, (box->y1 << 16) | height,
515 MGA_FXBNDRY, (box->x2 << 16) | box->x1);
516
517 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
518 MGA_FCOL, clear->clear_color,
519 MGA_DSTORG, dev_priv->front_offset,
520 MGA_DWGCTL + MGA_EXEC, dev_priv->clear_cmd);
521
522 ADVANCE_DMA();
523 }
524
525 if (clear->flags & MGA_BACK) {
526 BEGIN_DMA(2);
527
528 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
529 MGA_PLNWT, clear->color_mask,
530 MGA_YDSTLEN, (box->y1 << 16) | height,
531 MGA_FXBNDRY, (box->x2 << 16) | box->x1);
532
533 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
534 MGA_FCOL, clear->clear_color,
535 MGA_DSTORG, dev_priv->back_offset,
536 MGA_DWGCTL + MGA_EXEC, dev_priv->clear_cmd);
537
538 ADVANCE_DMA();
539 }
540
541 if (clear->flags & MGA_DEPTH) {
542 BEGIN_DMA(2);
543
544 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
545 MGA_PLNWT, clear->depth_mask,
546 MGA_YDSTLEN, (box->y1 << 16) | height,
547 MGA_FXBNDRY, (box->x2 << 16) | box->x1);
548
549 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
550 MGA_FCOL, clear->clear_depth,
551 MGA_DSTORG, dev_priv->depth_offset,
552 MGA_DWGCTL + MGA_EXEC, dev_priv->clear_cmd);
553
554 ADVANCE_DMA();
555 }
556
557 }
558
559 BEGIN_DMA(1);
560
561 /* Force reset of DWGCTL */
562 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
563 MGA_DMAPAD, 0x00000000,
564 MGA_PLNWT, ctx->plnwt, MGA_DWGCTL, ctx->dwgctl);
565
566 ADVANCE_DMA();
567
568 FLUSH_DMA();
569 }
570
571 static void mga_dma_dispatch_swap(struct drm_device *dev)
572 {
573 drm_mga_private_t *dev_priv = dev->dev_private;
574 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
575 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
576 struct drm_clip_rect *pbox = sarea_priv->boxes;
577 int nbox = sarea_priv->nbox;
578 int i;
579 DMA_LOCALS;
580 DRM_DEBUG("\n");
581
582 sarea_priv->last_frame.head = dev_priv->prim.tail;
583 sarea_priv->last_frame.wrap = dev_priv->prim.last_wrap;
584
585 BEGIN_DMA(4 + nbox);
586
587 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
588 MGA_DMAPAD, 0x00000000,
589 MGA_DWGSYNC, 0x00007100, MGA_DWGSYNC, 0x00007000);
590
591 DMA_BLOCK(MGA_DSTORG, dev_priv->front_offset,
592 MGA_MACCESS, dev_priv->maccess,
593 MGA_SRCORG, dev_priv->back_offset,
594 MGA_AR5, dev_priv->front_pitch);
595
596 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
597 MGA_DMAPAD, 0x00000000,
598 MGA_PLNWT, 0xffffffff, MGA_DWGCTL, MGA_DWGCTL_COPY);
599
600 for (i = 0; i < nbox; i++) {
601 struct drm_clip_rect *box = &pbox[i];
602 u32 height = box->y2 - box->y1;
603 u32 start = box->y1 * dev_priv->front_pitch;
604
605 DRM_DEBUG(" from=%d,%d to=%d,%d\n",
606 box->x1, box->y1, box->x2, box->y2);
607
608 DMA_BLOCK(MGA_AR0, start + box->x2 - 1,
609 MGA_AR3, start + box->x1,
610 MGA_FXBNDRY, ((box->x2 - 1) << 16) | box->x1,
611 MGA_YDSTLEN + MGA_EXEC, (box->y1 << 16) | height);
612 }
613
614 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
615 MGA_PLNWT, ctx->plnwt,
616 MGA_SRCORG, dev_priv->front_offset, MGA_DWGCTL, ctx->dwgctl);
617
618 ADVANCE_DMA();
619
620 FLUSH_DMA();
621
622 DRM_DEBUG("... done.\n");
623 }
624
625 static void mga_dma_dispatch_vertex(struct drm_device *dev, struct drm_buf *buf)
626 {
627 drm_mga_private_t *dev_priv = dev->dev_private;
628 drm_mga_buf_priv_t *buf_priv = buf->dev_private;
629 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
630 u32 address = (u32) buf->bus_address;
631 u32 length = (u32) buf->used;
632 int i = 0;
633 DMA_LOCALS;
634 DRM_DEBUG("buf=%d used=%d\n", buf->idx, buf->used);
635
636 if (buf->used) {
637 buf_priv->dispatched = 1;
638
639 MGA_EMIT_STATE(dev_priv, sarea_priv->dirty);
640
641 do {
642 if (i < sarea_priv->nbox) {
643 mga_emit_clip_rect(dev_priv,
644 &sarea_priv->boxes[i]);
645 }
646
647 BEGIN_DMA(1);
648
649 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
650 MGA_DMAPAD, 0x00000000,
651 MGA_SECADDRESS, (address |
652 MGA_DMA_VERTEX),
653 MGA_SECEND, ((address + length) |
654 dev_priv->dma_access));
655
656 ADVANCE_DMA();
657 } while (++i < sarea_priv->nbox);
658 }
659
660 if (buf_priv->discard) {
661 AGE_BUFFER(buf_priv);
662 buf->pending = 0;
663 buf->used = 0;
664 buf_priv->dispatched = 0;
665
666 mga_freelist_put(dev, buf);
667 }
668
669 FLUSH_DMA();
670 }
671
672 static void mga_dma_dispatch_indices(struct drm_device *dev, struct drm_buf *buf,
673 unsigned int start, unsigned int end)
674 {
675 drm_mga_private_t *dev_priv = dev->dev_private;
676 drm_mga_buf_priv_t *buf_priv = buf->dev_private;
677 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
678 u32 address = (u32) buf->bus_address;
679 int i = 0;
680 DMA_LOCALS;
681 DRM_DEBUG("buf=%d start=%d end=%d\n", buf->idx, start, end);
682
683 if (start != end) {
684 buf_priv->dispatched = 1;
685
686 MGA_EMIT_STATE(dev_priv, sarea_priv->dirty);
687
688 do {
689 if (i < sarea_priv->nbox) {
690 mga_emit_clip_rect(dev_priv,
691 &sarea_priv->boxes[i]);
692 }
693
694 BEGIN_DMA(1);
695
696 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
697 MGA_DMAPAD, 0x00000000,
698 MGA_SETUPADDRESS, address + start,
699 MGA_SETUPEND, ((address + end) |
700 dev_priv->dma_access));
701
702 ADVANCE_DMA();
703 } while (++i < sarea_priv->nbox);
704 }
705
706 if (buf_priv->discard) {
707 AGE_BUFFER(buf_priv);
708 buf->pending = 0;
709 buf->used = 0;
710 buf_priv->dispatched = 0;
711
712 mga_freelist_put(dev, buf);
713 }
714
715 FLUSH_DMA();
716 }
717
718 /* This copies a 64 byte aligned agp region to the frambuffer with a
719 * standard blit, the ioctl needs to do checking.
720 */
721 static void mga_dma_dispatch_iload(struct drm_device *dev, struct drm_buf *buf,
722 unsigned int dstorg, unsigned int length)
723 {
724 drm_mga_private_t *dev_priv = dev->dev_private;
725 drm_mga_buf_priv_t *buf_priv = buf->dev_private;
726 drm_mga_context_regs_t *ctx = &dev_priv->sarea_priv->context_state;
727 u32 srcorg =
728 buf->bus_address | dev_priv->dma_access | MGA_SRCMAP_SYSMEM;
729 u32 y2;
730 DMA_LOCALS;
731 DRM_DEBUG("buf=%d used=%d\n", buf->idx, buf->used);
732
733 y2 = length / 64;
734
735 BEGIN_DMA(5);
736
737 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
738 MGA_DMAPAD, 0x00000000,
739 MGA_DWGSYNC, 0x00007100, MGA_DWGSYNC, 0x00007000);
740
741 DMA_BLOCK(MGA_DSTORG, dstorg,
742 MGA_MACCESS, 0x00000000, MGA_SRCORG, srcorg, MGA_AR5, 64);
743
744 DMA_BLOCK(MGA_PITCH, 64,
745 MGA_PLNWT, 0xffffffff,
746 MGA_DMAPAD, 0x00000000, MGA_DWGCTL, MGA_DWGCTL_COPY);
747
748 DMA_BLOCK(MGA_AR0, 63,
749 MGA_AR3, 0,
750 MGA_FXBNDRY, (63 << 16) | 0, MGA_YDSTLEN + MGA_EXEC, y2);
751
752 DMA_BLOCK(MGA_PLNWT, ctx->plnwt,
753 MGA_SRCORG, dev_priv->front_offset,
754 MGA_PITCH, dev_priv->front_pitch, MGA_DWGSYNC, 0x00007000);
755
756 ADVANCE_DMA();
757
758 AGE_BUFFER(buf_priv);
759
760 buf->pending = 0;
761 buf->used = 0;
762 buf_priv->dispatched = 0;
763
764 mga_freelist_put(dev, buf);
765
766 FLUSH_DMA();
767 }
768
769 static void mga_dma_dispatch_blit(struct drm_device *dev, drm_mga_blit_t *blit)
770 {
771 drm_mga_private_t *dev_priv = dev->dev_private;
772 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
773 drm_mga_context_regs_t *ctx = &sarea_priv->context_state;
774 struct drm_clip_rect *pbox = sarea_priv->boxes;
775 int nbox = sarea_priv->nbox;
776 u32 scandir = 0, i;
777 DMA_LOCALS;
778 DRM_DEBUG("\n");
779
780 BEGIN_DMA(4 + nbox);
781
782 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
783 MGA_DMAPAD, 0x00000000,
784 MGA_DWGSYNC, 0x00007100, MGA_DWGSYNC, 0x00007000);
785
786 DMA_BLOCK(MGA_DWGCTL, MGA_DWGCTL_COPY,
787 MGA_PLNWT, blit->planemask,
788 MGA_SRCORG, blit->srcorg, MGA_DSTORG, blit->dstorg);
789
790 DMA_BLOCK(MGA_SGN, scandir,
791 MGA_MACCESS, dev_priv->maccess,
792 MGA_AR5, blit->ydir * blit->src_pitch,
793 MGA_PITCH, blit->dst_pitch);
794
795 for (i = 0; i < nbox; i++) {
796 int srcx = pbox[i].x1 + blit->delta_sx;
797 int srcy = pbox[i].y1 + blit->delta_sy;
798 int dstx = pbox[i].x1 + blit->delta_dx;
799 int dsty = pbox[i].y1 + blit->delta_dy;
800 int h = pbox[i].y2 - pbox[i].y1;
801 int w = pbox[i].x2 - pbox[i].x1 - 1;
802 int start;
803
804 if (blit->ydir == -1)
805 srcy = blit->height - srcy - 1;
806
807 start = srcy * blit->src_pitch + srcx;
808
809 DMA_BLOCK(MGA_AR0, start + w,
810 MGA_AR3, start,
811 MGA_FXBNDRY, ((dstx + w) << 16) | (dstx & 0xffff),
812 MGA_YDSTLEN + MGA_EXEC, (dsty << 16) | h);
813 }
814
815 /* Do something to flush AGP?
816 */
817
818 /* Force reset of DWGCTL */
819 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
820 MGA_PLNWT, ctx->plnwt,
821 MGA_PITCH, dev_priv->front_pitch, MGA_DWGCTL, ctx->dwgctl);
822
823 ADVANCE_DMA();
824 }
825
826 /* ================================================================
827 *
828 */
829
830 static int mga_dma_clear(struct drm_device *dev, void *data, struct drm_file *file_priv)
831 {
832 drm_mga_private_t *dev_priv = dev->dev_private;
833 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
834 drm_mga_clear_t *clear = data;
835
836 LOCK_TEST_WITH_RETURN(dev, file_priv);
837
838 if (sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS)
839 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
840
841 WRAP_TEST_WITH_RETURN(dev_priv);
842
843 mga_dma_dispatch_clear(dev, clear);
844
845 /* Make sure we restore the 3D state next time.
846 */
847 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
848
849 return 0;
850 }
851
852 static int mga_dma_swap(struct drm_device *dev, void *data, struct drm_file *file_priv)
853 {
854 drm_mga_private_t *dev_priv = dev->dev_private;
855 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
856
857 LOCK_TEST_WITH_RETURN(dev, file_priv);
858
859 if (sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS)
860 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
861
862 WRAP_TEST_WITH_RETURN(dev_priv);
863
864 mga_dma_dispatch_swap(dev);
865
866 /* Make sure we restore the 3D state next time.
867 */
868 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
869
870 return 0;
871 }
872
873 static int mga_dma_vertex(struct drm_device *dev, void *data, struct drm_file *file_priv)
874 {
875 drm_mga_private_t *dev_priv = dev->dev_private;
876 struct drm_device_dma *dma = dev->dma;
877 struct drm_buf *buf;
878 drm_mga_buf_priv_t *buf_priv;
879 drm_mga_vertex_t *vertex = data;
880
881 LOCK_TEST_WITH_RETURN(dev, file_priv);
882
883 if (vertex->idx < 0 || vertex->idx > dma->buf_count)
884 return -EINVAL;
885 buf = dma->buflist[vertex->idx];
886 buf_priv = buf->dev_private;
887
888 buf->used = vertex->used;
889 buf_priv->discard = vertex->discard;
890
891 if (!mga_verify_state(dev_priv)) {
892 if (vertex->discard) {
893 if (buf_priv->dispatched == 1)
894 AGE_BUFFER(buf_priv);
895 buf_priv->dispatched = 0;
896 mga_freelist_put(dev, buf);
897 }
898 return -EINVAL;
899 }
900
901 WRAP_TEST_WITH_RETURN(dev_priv);
902
903 mga_dma_dispatch_vertex(dev, buf);
904
905 return 0;
906 }
907
908 static int mga_dma_indices(struct drm_device *dev, void *data, struct drm_file *file_priv)
909 {
910 drm_mga_private_t *dev_priv = dev->dev_private;
911 struct drm_device_dma *dma = dev->dma;
912 struct drm_buf *buf;
913 drm_mga_buf_priv_t *buf_priv;
914 drm_mga_indices_t *indices = data;
915
916 LOCK_TEST_WITH_RETURN(dev, file_priv);
917
918 if (indices->idx < 0 || indices->idx > dma->buf_count)
919 return -EINVAL;
920
921 buf = dma->buflist[indices->idx];
922 buf_priv = buf->dev_private;
923
924 buf_priv->discard = indices->discard;
925
926 if (!mga_verify_state(dev_priv)) {
927 if (indices->discard) {
928 if (buf_priv->dispatched == 1)
929 AGE_BUFFER(buf_priv);
930 buf_priv->dispatched = 0;
931 mga_freelist_put(dev, buf);
932 }
933 return -EINVAL;
934 }
935
936 WRAP_TEST_WITH_RETURN(dev_priv);
937
938 mga_dma_dispatch_indices(dev, buf, indices->start, indices->end);
939
940 return 0;
941 }
942
943 static int mga_dma_iload(struct drm_device *dev, void *data, struct drm_file *file_priv)
944 {
945 struct drm_device_dma *dma = dev->dma;
946 drm_mga_private_t *dev_priv = dev->dev_private;
947 struct drm_buf *buf;
948 drm_mga_buf_priv_t *buf_priv;
949 drm_mga_iload_t *iload = data;
950 DRM_DEBUG("\n");
951
952 LOCK_TEST_WITH_RETURN(dev, file_priv);
953
954 #if 0
955 if (mga_do_wait_for_idle(dev_priv) < 0) {
956 if (MGA_DMA_DEBUG)
957 DRM_INFO("-EBUSY\n");
958 return -EBUSY;
959 }
960 #endif
961 if (iload->idx < 0 || iload->idx > dma->buf_count)
962 return -EINVAL;
963
964 buf = dma->buflist[iload->idx];
965 buf_priv = buf->dev_private;
966
967 if (mga_verify_iload(dev_priv, iload->dstorg, iload->length)) {
968 mga_freelist_put(dev, buf);
969 return -EINVAL;
970 }
971
972 WRAP_TEST_WITH_RETURN(dev_priv);
973
974 mga_dma_dispatch_iload(dev, buf, iload->dstorg, iload->length);
975
976 /* Make sure we restore the 3D state next time.
977 */
978 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
979
980 return 0;
981 }
982
983 static int mga_dma_blit(struct drm_device *dev, void *data, struct drm_file *file_priv)
984 {
985 drm_mga_private_t *dev_priv = dev->dev_private;
986 drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv;
987 drm_mga_blit_t *blit = data;
988 DRM_DEBUG("\n");
989
990 LOCK_TEST_WITH_RETURN(dev, file_priv);
991
992 if (sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS)
993 sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS;
994
995 if (mga_verify_blit(dev_priv, blit->srcorg, blit->dstorg))
996 return -EINVAL;
997
998 WRAP_TEST_WITH_RETURN(dev_priv);
999
1000 mga_dma_dispatch_blit(dev, blit);
1001
1002 /* Make sure we restore the 3D state next time.
1003 */
1004 dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT;
1005
1006 return 0;
1007 }
1008
1009 static int mga_getparam(struct drm_device *dev, void *data, struct drm_file *file_priv)
1010 {
1011 drm_mga_private_t *dev_priv = dev->dev_private;
1012 drm_mga_getparam_t *param = data;
1013 int value;
1014
1015 if (!dev_priv) {
1016 DRM_ERROR("called with no initialization\n");
1017 return -EINVAL;
1018 }
1019
1020 DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);
1021
1022 switch (param->param) {
1023 case MGA_PARAM_IRQ_NR:
1024 value = drm_dev_to_irq(dev);
1025 break;
1026 case MGA_PARAM_CARD_TYPE:
1027 value = dev_priv->chipset;
1028 break;
1029 default:
1030 return -EINVAL;
1031 }
1032
1033 if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
1034 DRM_ERROR("copy_to_user\n");
1035 return -EFAULT;
1036 }
1037
1038 return 0;
1039 }
1040
1041 static int mga_set_fence(struct drm_device *dev, void *data, struct drm_file *file_priv)
1042 {
1043 drm_mga_private_t *dev_priv = dev->dev_private;
1044 u32 *fence = data;
1045 DMA_LOCALS;
1046
1047 if (!dev_priv) {
1048 DRM_ERROR("called with no initialization\n");
1049 return -EINVAL;
1050 }
1051
1052 DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);
1053
1054 /* I would normal do this assignment in the declaration of fence,
1055 * but dev_priv may be NULL.
1056 */
1057
1058 *fence = dev_priv->next_fence_to_post;
1059 dev_priv->next_fence_to_post++;
1060
1061 BEGIN_DMA(1);
1062 DMA_BLOCK(MGA_DMAPAD, 0x00000000,
1063 MGA_DMAPAD, 0x00000000,
1064 MGA_DMAPAD, 0x00000000, MGA_SOFTRAP, 0x00000000);
1065 ADVANCE_DMA();
1066
1067 return 0;
1068 }
1069
1070 static int mga_wait_fence(struct drm_device *dev, void *data, struct drm_file *
1071 file_priv)
1072 {
1073 drm_mga_private_t *dev_priv = dev->dev_private;
1074 u32 *fence = data;
1075
1076 if (!dev_priv) {
1077 DRM_ERROR("called with no initialization\n");
1078 return -EINVAL;
1079 }
1080
1081 DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);
1082
1083 mga_driver_fence_wait(dev, fence);
1084 return 0;
1085 }
1086
1087 struct drm_ioctl_desc mga_ioctls[] = {
1088 DRM_IOCTL_DEF_DRV(MGA_INIT, mga_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1089 DRM_IOCTL_DEF_DRV(MGA_FLUSH, mga_dma_flush, DRM_AUTH),
1090 DRM_IOCTL_DEF_DRV(MGA_RESET, mga_dma_reset, DRM_AUTH),
1091 DRM_IOCTL_DEF_DRV(MGA_SWAP, mga_dma_swap, DRM_AUTH),
1092 DRM_IOCTL_DEF_DRV(MGA_CLEAR, mga_dma_clear, DRM_AUTH),
1093 DRM_IOCTL_DEF_DRV(MGA_VERTEX, mga_dma_vertex, DRM_AUTH),
1094 DRM_IOCTL_DEF_DRV(MGA_INDICES, mga_dma_indices, DRM_AUTH),
1095 DRM_IOCTL_DEF_DRV(MGA_ILOAD, mga_dma_iload, DRM_AUTH),
1096 DRM_IOCTL_DEF_DRV(MGA_BLIT, mga_dma_blit, DRM_AUTH),
1097 DRM_IOCTL_DEF_DRV(MGA_GETPARAM, mga_getparam, DRM_AUTH),
1098 DRM_IOCTL_DEF_DRV(MGA_SET_FENCE, mga_set_fence, DRM_AUTH),
1099 DRM_IOCTL_DEF_DRV(MGA_WAIT_FENCE, mga_wait_fence, DRM_AUTH),
1100 DRM_IOCTL_DEF_DRV(MGA_DMA_BOOTSTRAP, mga_dma_bootstrap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1101 };
1102
1103 int mga_max_ioctl = DRM_ARRAY_SIZE(mga_ioctls);