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22f579c6 DA |
1 | /* |
2 | * Copyright 2004 The Unichrome Project. All Rights Reserved. | |
3 | * Copyright 2005 Thomas Hellstrom. All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sub license, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the | |
13 | * next paragraph) shall be included in all copies or substantial portions | |
14 | * of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHOR(S), AND/OR THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
22 | * DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Author: Thomas Hellstrom 2004, 2005. | |
25 | * This code was written using docs obtained under NDA from VIA Inc. | |
26 | * | |
27 | * Don't run this code directly on an AGP buffer. Due to cache problems it will | |
28 | * be very slow. | |
29 | */ | |
30 | ||
22f579c6 DA |
31 | #include "via_3d_reg.h" |
32 | #include "drmP.h" | |
33 | #include "drm.h" | |
34 | #include "via_drm.h" | |
35 | #include "via_verifier.h" | |
36 | #include "via_drv.h" | |
37 | ||
b5e89ed5 | 38 | typedef enum { |
22f579c6 DA |
39 | state_command, |
40 | state_header2, | |
41 | state_header1, | |
42 | state_vheader5, | |
43 | state_vheader6, | |
44 | state_error | |
45 | } verifier_state_t; | |
46 | ||
b5e89ed5 | 47 | typedef enum { |
22f579c6 DA |
48 | no_check = 0, |
49 | check_for_header2, | |
50 | check_for_header1, | |
51 | check_for_header2_err, | |
52 | check_for_header1_err, | |
53 | check_for_fire, | |
54 | check_z_buffer_addr0, | |
55 | check_z_buffer_addr1, | |
56 | check_z_buffer_addr_mode, | |
57 | check_destination_addr0, | |
58 | check_destination_addr1, | |
59 | check_destination_addr_mode, | |
60 | check_for_dummy, | |
61 | check_for_dd, | |
62 | check_texture_addr0, | |
63 | check_texture_addr1, | |
64 | check_texture_addr2, | |
65 | check_texture_addr3, | |
66 | check_texture_addr4, | |
67 | check_texture_addr5, | |
68 | check_texture_addr6, | |
69 | check_texture_addr7, | |
70 | check_texture_addr8, | |
71 | check_texture_addr_mode, | |
72 | check_for_vertex_count, | |
73 | check_number_texunits, | |
74 | forbidden_command | |
b5e89ed5 | 75 | } hazard_t; |
22f579c6 DA |
76 | |
77 | /* | |
78 | * Associates each hazard above with a possible multi-command | |
79 | * sequence. For example an address that is split over multiple | |
b5e89ed5 | 80 | * commands and that needs to be checked at the first command |
22f579c6 DA |
81 | * that does not include any part of the address. |
82 | */ | |
83 | ||
b5e89ed5 | 84 | static drm_via_sequence_t seqs[] = { |
22f579c6 DA |
85 | no_sequence, |
86 | no_sequence, | |
87 | no_sequence, | |
88 | no_sequence, | |
89 | no_sequence, | |
90 | no_sequence, | |
91 | z_address, | |
92 | z_address, | |
93 | z_address, | |
94 | dest_address, | |
95 | dest_address, | |
96 | dest_address, | |
97 | no_sequence, | |
98 | no_sequence, | |
99 | tex_address, | |
100 | tex_address, | |
101 | tex_address, | |
102 | tex_address, | |
103 | tex_address, | |
104 | tex_address, | |
105 | tex_address, | |
106 | tex_address, | |
107 | tex_address, | |
108 | tex_address, | |
109 | no_sequence | |
110 | }; | |
b5e89ed5 DA |
111 | |
112 | typedef struct { | |
22f579c6 DA |
113 | unsigned int code; |
114 | hazard_t hz; | |
115 | } hz_init_t; | |
116 | ||
22f579c6 DA |
117 | static hz_init_t init_table1[] = { |
118 | {0xf2, check_for_header2_err}, | |
119 | {0xf0, check_for_header1_err}, | |
120 | {0xee, check_for_fire}, | |
121 | {0xcc, check_for_dummy}, | |
122 | {0xdd, check_for_dd}, | |
123 | {0x00, no_check}, | |
124 | {0x10, check_z_buffer_addr0}, | |
125 | {0x11, check_z_buffer_addr1}, | |
126 | {0x12, check_z_buffer_addr_mode}, | |
127 | {0x13, no_check}, | |
128 | {0x14, no_check}, | |
129 | {0x15, no_check}, | |
130 | {0x23, no_check}, | |
131 | {0x24, no_check}, | |
132 | {0x33, no_check}, | |
133 | {0x34, no_check}, | |
134 | {0x35, no_check}, | |
135 | {0x36, no_check}, | |
136 | {0x37, no_check}, | |
137 | {0x38, no_check}, | |
138 | {0x39, no_check}, | |
139 | {0x3A, no_check}, | |
140 | {0x3B, no_check}, | |
141 | {0x3C, no_check}, | |
142 | {0x3D, no_check}, | |
143 | {0x3E, no_check}, | |
144 | {0x40, check_destination_addr0}, | |
145 | {0x41, check_destination_addr1}, | |
146 | {0x42, check_destination_addr_mode}, | |
147 | {0x43, no_check}, | |
148 | {0x44, no_check}, | |
149 | {0x50, no_check}, | |
150 | {0x51, no_check}, | |
151 | {0x52, no_check}, | |
152 | {0x53, no_check}, | |
153 | {0x54, no_check}, | |
154 | {0x55, no_check}, | |
155 | {0x56, no_check}, | |
156 | {0x57, no_check}, | |
157 | {0x58, no_check}, | |
158 | {0x70, no_check}, | |
159 | {0x71, no_check}, | |
160 | {0x78, no_check}, | |
161 | {0x79, no_check}, | |
162 | {0x7A, no_check}, | |
163 | {0x7B, no_check}, | |
164 | {0x7C, no_check}, | |
165 | {0x7D, check_for_vertex_count} | |
166 | }; | |
167 | ||
22f579c6 DA |
168 | static hz_init_t init_table2[] = { |
169 | {0xf2, check_for_header2_err}, | |
170 | {0xf0, check_for_header1_err}, | |
171 | {0xee, check_for_fire}, | |
172 | {0xcc, check_for_dummy}, | |
173 | {0x00, check_texture_addr0}, | |
174 | {0x01, check_texture_addr0}, | |
175 | {0x02, check_texture_addr0}, | |
176 | {0x03, check_texture_addr0}, | |
177 | {0x04, check_texture_addr0}, | |
178 | {0x05, check_texture_addr0}, | |
179 | {0x06, check_texture_addr0}, | |
180 | {0x07, check_texture_addr0}, | |
181 | {0x08, check_texture_addr0}, | |
182 | {0x09, check_texture_addr0}, | |
183 | {0x20, check_texture_addr1}, | |
184 | {0x21, check_texture_addr1}, | |
185 | {0x22, check_texture_addr1}, | |
186 | {0x23, check_texture_addr4}, | |
187 | {0x2B, check_texture_addr3}, | |
188 | {0x2C, check_texture_addr3}, | |
189 | {0x2D, check_texture_addr3}, | |
190 | {0x2E, check_texture_addr3}, | |
191 | {0x2F, check_texture_addr3}, | |
192 | {0x30, check_texture_addr3}, | |
193 | {0x31, check_texture_addr3}, | |
194 | {0x32, check_texture_addr3}, | |
195 | {0x33, check_texture_addr3}, | |
196 | {0x34, check_texture_addr3}, | |
197 | {0x4B, check_texture_addr5}, | |
198 | {0x4C, check_texture_addr6}, | |
199 | {0x51, check_texture_addr7}, | |
200 | {0x52, check_texture_addr8}, | |
201 | {0x77, check_texture_addr2}, | |
202 | {0x78, no_check}, | |
203 | {0x79, no_check}, | |
204 | {0x7A, no_check}, | |
205 | {0x7B, check_texture_addr_mode}, | |
206 | {0x7C, no_check}, | |
207 | {0x7D, no_check}, | |
208 | {0x7E, no_check}, | |
209 | {0x7F, no_check}, | |
210 | {0x80, no_check}, | |
211 | {0x81, no_check}, | |
212 | {0x82, no_check}, | |
213 | {0x83, no_check}, | |
214 | {0x85, no_check}, | |
215 | {0x86, no_check}, | |
216 | {0x87, no_check}, | |
217 | {0x88, no_check}, | |
218 | {0x89, no_check}, | |
219 | {0x8A, no_check}, | |
220 | {0x90, no_check}, | |
221 | {0x91, no_check}, | |
222 | {0x92, no_check}, | |
223 | {0x93, no_check} | |
224 | }; | |
225 | ||
226 | static hz_init_t init_table3[] = { | |
227 | {0xf2, check_for_header2_err}, | |
228 | {0xf0, check_for_header1_err}, | |
229 | {0xcc, check_for_dummy}, | |
230 | {0x00, check_number_texunits} | |
231 | }; | |
22f579c6 | 232 | |
b5e89ed5 DA |
233 | static hazard_t table1[256]; |
234 | static hazard_t table2[256]; | |
235 | static hazard_t table3[256]; | |
22f579c6 DA |
236 | |
237 | static __inline__ int | |
b5e89ed5 | 238 | eat_words(const uint32_t ** buf, const uint32_t * buf_end, unsigned num_words) |
22f579c6 DA |
239 | { |
240 | if ((*buf - buf_end) >= num_words) { | |
241 | *buf += num_words; | |
242 | return 0; | |
b5e89ed5 | 243 | } |
22f579c6 DA |
244 | DRM_ERROR("Illegal termination of DMA command buffer\n"); |
245 | return 1; | |
246 | } | |
247 | ||
22f579c6 DA |
248 | /* |
249 | * Partially stolen from drm_memory.h | |
250 | */ | |
251 | ||
b5e89ed5 DA |
252 | static __inline__ drm_map_t *via_drm_lookup_agp_map(drm_via_state_t * seq, |
253 | unsigned long offset, | |
254 | unsigned long size, | |
255 | drm_device_t * dev) | |
22f579c6 DA |
256 | { |
257 | struct list_head *list; | |
258 | drm_map_list_t *r_list; | |
259 | drm_map_t *map = seq->map_cache; | |
260 | ||
b5e89ed5 DA |
261 | if (map && map->offset <= offset |
262 | && (offset + size) <= (map->offset + map->size)) { | |
22f579c6 DA |
263 | return map; |
264 | } | |
b5e89ed5 | 265 | |
22f579c6 DA |
266 | list_for_each(list, &dev->maplist->head) { |
267 | r_list = (drm_map_list_t *) list; | |
268 | map = r_list->map; | |
269 | if (!map) | |
270 | continue; | |
b5e89ed5 DA |
271 | if (map->offset <= offset |
272 | && (offset + size) <= (map->offset + map->size) | |
273 | && !(map->flags & _DRM_RESTRICTED) | |
274 | && (map->type == _DRM_AGP)) { | |
22f579c6 DA |
275 | seq->map_cache = map; |
276 | return map; | |
277 | } | |
278 | } | |
279 | return NULL; | |
280 | } | |
281 | ||
22f579c6 | 282 | /* |
b5e89ed5 | 283 | * Require that all AGP texture levels reside in the same AGP map which should |
22f579c6 | 284 | * be mappable by the client. This is not a big restriction. |
b5e89ed5 DA |
285 | * FIXME: To actually enforce this security policy strictly, drm_rmmap |
286 | * would have to wait for dma quiescent before removing an AGP map. | |
22f579c6 DA |
287 | * The via_drm_lookup_agp_map call in reality seems to take |
288 | * very little CPU time. | |
289 | */ | |
290 | ||
b5e89ed5 | 291 | static __inline__ int finish_current_sequence(drm_via_state_t * cur_seq) |
22f579c6 | 292 | { |
b5e89ed5 | 293 | switch (cur_seq->unfinished) { |
22f579c6 DA |
294 | case z_address: |
295 | DRM_DEBUG("Z Buffer start address is 0x%x\n", cur_seq->z_addr); | |
296 | break; | |
297 | case dest_address: | |
b5e89ed5 DA |
298 | DRM_DEBUG("Destination start address is 0x%x\n", |
299 | cur_seq->d_addr); | |
22f579c6 DA |
300 | break; |
301 | case tex_address: | |
b5e89ed5 DA |
302 | if (cur_seq->agp_texture) { |
303 | unsigned start = | |
304 | cur_seq->tex_level_lo[cur_seq->texture]; | |
22f579c6 | 305 | unsigned end = cur_seq->tex_level_hi[cur_seq->texture]; |
b5e89ed5 | 306 | unsigned long lo = ~0, hi = 0, tmp; |
22f579c6 DA |
307 | uint32_t *addr, *pitch, *height, tex; |
308 | unsigned i; | |
309 | ||
b5e89ed5 DA |
310 | if (end > 9) |
311 | end = 9; | |
312 | if (start > 9) | |
313 | start = 9; | |
22f579c6 | 314 | |
b5e89ed5 DA |
315 | addr = |
316 | &(cur_seq->t_addr[tex = cur_seq->texture][start]); | |
22f579c6 DA |
317 | pitch = &(cur_seq->pitch[tex][start]); |
318 | height = &(cur_seq->height[tex][start]); | |
319 | ||
b5e89ed5 | 320 | for (i = start; i <= end; ++i) { |
22f579c6 | 321 | tmp = *addr++; |
b5e89ed5 DA |
322 | if (tmp < lo) |
323 | lo = tmp; | |
22f579c6 | 324 | tmp += (*height++ << *pitch++); |
b5e89ed5 DA |
325 | if (tmp > hi) |
326 | hi = tmp; | |
22f579c6 DA |
327 | } |
328 | ||
b5e89ed5 DA |
329 | if (!via_drm_lookup_agp_map |
330 | (cur_seq, lo, hi - lo, cur_seq->dev)) { | |
331 | DRM_ERROR | |
332 | ("AGP texture is not in allowed map\n"); | |
22f579c6 DA |
333 | return 2; |
334 | } | |
b5e89ed5 | 335 | } |
22f579c6 DA |
336 | break; |
337 | default: | |
338 | break; | |
339 | } | |
340 | cur_seq->unfinished = no_sequence; | |
341 | return 0; | |
342 | } | |
343 | ||
b5e89ed5 DA |
344 | static __inline__ int |
345 | investigate_hazard(uint32_t cmd, hazard_t hz, drm_via_state_t * cur_seq) | |
22f579c6 DA |
346 | { |
347 | register uint32_t tmp, *tmp_addr; | |
348 | ||
349 | if (cur_seq->unfinished && (cur_seq->unfinished != seqs[hz])) { | |
350 | int ret; | |
b5e89ed5 DA |
351 | if ((ret = finish_current_sequence(cur_seq))) |
352 | return ret; | |
22f579c6 DA |
353 | } |
354 | ||
b5e89ed5 | 355 | switch (hz) { |
22f579c6 | 356 | case check_for_header2: |
b5e89ed5 DA |
357 | if (cmd == HALCYON_HEADER2) |
358 | return 1; | |
22f579c6 DA |
359 | return 0; |
360 | case check_for_header1: | |
b5e89ed5 DA |
361 | if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) |
362 | return 1; | |
22f579c6 DA |
363 | return 0; |
364 | case check_for_header2_err: | |
b5e89ed5 DA |
365 | if (cmd == HALCYON_HEADER2) |
366 | return 1; | |
22f579c6 DA |
367 | DRM_ERROR("Illegal DMA HALCYON_HEADER2 command\n"); |
368 | break; | |
369 | case check_for_header1_err: | |
b5e89ed5 DA |
370 | if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) |
371 | return 1; | |
22f579c6 DA |
372 | DRM_ERROR("Illegal DMA HALCYON_HEADER1 command\n"); |
373 | break; | |
374 | case check_for_fire: | |
b5e89ed5 DA |
375 | if ((cmd & HALCYON_FIREMASK) == HALCYON_FIRECMD) |
376 | return 1; | |
22f579c6 DA |
377 | DRM_ERROR("Illegal DMA HALCYON_FIRECMD command\n"); |
378 | break; | |
379 | case check_for_dummy: | |
b5e89ed5 DA |
380 | if (HC_DUMMY == cmd) |
381 | return 0; | |
22f579c6 DA |
382 | DRM_ERROR("Illegal DMA HC_DUMMY command\n"); |
383 | break; | |
384 | case check_for_dd: | |
b5e89ed5 DA |
385 | if (0xdddddddd == cmd) |
386 | return 0; | |
22f579c6 DA |
387 | DRM_ERROR("Illegal DMA 0xdddddddd command\n"); |
388 | break; | |
389 | case check_z_buffer_addr0: | |
390 | cur_seq->unfinished = z_address; | |
391 | cur_seq->z_addr = (cur_seq->z_addr & 0xFF000000) | | |
b5e89ed5 | 392 | (cmd & 0x00FFFFFF); |
22f579c6 DA |
393 | return 0; |
394 | case check_z_buffer_addr1: | |
395 | cur_seq->unfinished = z_address; | |
396 | cur_seq->z_addr = (cur_seq->z_addr & 0x00FFFFFF) | | |
b5e89ed5 | 397 | ((cmd & 0xFF) << 24); |
22f579c6 DA |
398 | return 0; |
399 | case check_z_buffer_addr_mode: | |
400 | cur_seq->unfinished = z_address; | |
b5e89ed5 DA |
401 | if ((cmd & 0x0000C000) == 0) |
402 | return 0; | |
22f579c6 DA |
403 | DRM_ERROR("Attempt to place Z buffer in system memory\n"); |
404 | return 2; | |
405 | case check_destination_addr0: | |
406 | cur_seq->unfinished = dest_address; | |
407 | cur_seq->d_addr = (cur_seq->d_addr & 0xFF000000) | | |
b5e89ed5 | 408 | (cmd & 0x00FFFFFF); |
22f579c6 DA |
409 | return 0; |
410 | case check_destination_addr1: | |
411 | cur_seq->unfinished = dest_address; | |
412 | cur_seq->d_addr = (cur_seq->d_addr & 0x00FFFFFF) | | |
b5e89ed5 | 413 | ((cmd & 0xFF) << 24); |
22f579c6 DA |
414 | return 0; |
415 | case check_destination_addr_mode: | |
416 | cur_seq->unfinished = dest_address; | |
b5e89ed5 DA |
417 | if ((cmd & 0x0000C000) == 0) |
418 | return 0; | |
419 | DRM_ERROR | |
420 | ("Attempt to place 3D drawing buffer in system memory\n"); | |
421 | return 2; | |
22f579c6 DA |
422 | case check_texture_addr0: |
423 | cur_seq->unfinished = tex_address; | |
424 | tmp = (cmd >> 24); | |
425 | tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp]; | |
426 | *tmp_addr = (*tmp_addr & 0xFF000000) | (cmd & 0x00FFFFFF); | |
427 | return 0; | |
428 | case check_texture_addr1: | |
429 | cur_seq->unfinished = tex_address; | |
430 | tmp = ((cmd >> 24) - 0x20); | |
431 | tmp += tmp << 1; | |
432 | tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp]; | |
433 | *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24); | |
434 | tmp_addr++; | |
435 | *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF00) << 16); | |
436 | tmp_addr++; | |
437 | *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF0000) << 8); | |
438 | return 0; | |
439 | case check_texture_addr2: | |
440 | cur_seq->unfinished = tex_address; | |
441 | cur_seq->tex_level_lo[tmp = cur_seq->texture] = cmd & 0x3F; | |
442 | cur_seq->tex_level_hi[tmp] = (cmd & 0xFC0) >> 6; | |
443 | return 0; | |
444 | case check_texture_addr3: | |
445 | cur_seq->unfinished = tex_address; | |
446 | tmp = ((cmd >> 24) - 0x2B); | |
b5e89ed5 DA |
447 | cur_seq->pitch[cur_seq->texture][tmp] = |
448 | (cmd & 0x00F00000) >> 20; | |
22f579c6 | 449 | if (!tmp && (cmd & 0x000FFFFF)) { |
b5e89ed5 DA |
450 | DRM_ERROR |
451 | ("Unimplemented texture level 0 pitch mode.\n"); | |
22f579c6 DA |
452 | return 2; |
453 | } | |
454 | return 0; | |
455 | case check_texture_addr4: | |
456 | cur_seq->unfinished = tex_address; | |
457 | tmp_addr = &cur_seq->t_addr[cur_seq->texture][9]; | |
458 | *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24); | |
459 | return 0; | |
460 | case check_texture_addr5: | |
461 | case check_texture_addr6: | |
462 | cur_seq->unfinished = tex_address; | |
463 | /* | |
464 | * Texture width. We don't care since we have the pitch. | |
b5e89ed5 | 465 | */ |
22f579c6 DA |
466 | return 0; |
467 | case check_texture_addr7: | |
468 | cur_seq->unfinished = tex_address; | |
469 | tmp_addr = &(cur_seq->height[cur_seq->texture][0]); | |
470 | tmp_addr[5] = 1 << ((cmd & 0x00F00000) >> 20); | |
471 | tmp_addr[4] = 1 << ((cmd & 0x000F0000) >> 16); | |
472 | tmp_addr[3] = 1 << ((cmd & 0x0000F000) >> 12); | |
473 | tmp_addr[2] = 1 << ((cmd & 0x00000F00) >> 8); | |
474 | tmp_addr[1] = 1 << ((cmd & 0x000000F0) >> 4); | |
475 | tmp_addr[0] = 1 << (cmd & 0x0000000F); | |
476 | return 0; | |
477 | case check_texture_addr8: | |
478 | cur_seq->unfinished = tex_address; | |
479 | tmp_addr = &(cur_seq->height[cur_seq->texture][0]); | |
480 | tmp_addr[9] = 1 << ((cmd & 0x0000F000) >> 12); | |
b5e89ed5 | 481 | tmp_addr[8] = 1 << ((cmd & 0x00000F00) >> 8); |
22f579c6 DA |
482 | tmp_addr[7] = 1 << ((cmd & 0x000000F0) >> 4); |
483 | tmp_addr[6] = 1 << (cmd & 0x0000000F); | |
484 | return 0; | |
485 | case check_texture_addr_mode: | |
486 | cur_seq->unfinished = tex_address; | |
b5e89ed5 DA |
487 | if (2 == (tmp = cmd & 0x00000003)) { |
488 | DRM_ERROR | |
489 | ("Attempt to fetch texture from system memory.\n"); | |
22f579c6 DA |
490 | return 2; |
491 | } | |
492 | cur_seq->agp_texture = (tmp == 3); | |
b5e89ed5 DA |
493 | cur_seq->tex_palette_size[cur_seq->texture] = |
494 | (cmd >> 16) & 0x000000007; | |
22f579c6 DA |
495 | return 0; |
496 | case check_for_vertex_count: | |
497 | cur_seq->vertex_count = cmd & 0x0000FFFF; | |
498 | return 0; | |
499 | case check_number_texunits: | |
b5e89ed5 | 500 | cur_seq->multitex = (cmd >> 3) & 1; |
22f579c6 DA |
501 | return 0; |
502 | default: | |
503 | DRM_ERROR("Illegal DMA data: 0x%x\n", cmd); | |
504 | return 2; | |
505 | } | |
506 | return 2; | |
507 | } | |
508 | ||
22f579c6 | 509 | static __inline__ int |
b5e89ed5 DA |
510 | via_check_prim_list(uint32_t const **buffer, const uint32_t * buf_end, |
511 | drm_via_state_t * cur_seq) | |
22f579c6 | 512 | { |
b5e89ed5 DA |
513 | drm_via_private_t *dev_priv = |
514 | (drm_via_private_t *) cur_seq->dev->dev_private; | |
515 | uint32_t a_fire, bcmd, dw_count; | |
22f579c6 DA |
516 | int ret = 0; |
517 | int have_fire; | |
518 | const uint32_t *buf = *buffer; | |
519 | ||
b5e89ed5 DA |
520 | while (buf < buf_end) { |
521 | have_fire = 0; | |
22f579c6 | 522 | if ((buf_end - buf) < 2) { |
b5e89ed5 DA |
523 | DRM_ERROR |
524 | ("Unexpected termination of primitive list.\n"); | |
22f579c6 DA |
525 | ret = 1; |
526 | break; | |
527 | } | |
b5e89ed5 DA |
528 | if ((*buf & HC_ACMD_MASK) != HC_ACMD_HCmdB) |
529 | break; | |
22f579c6 DA |
530 | bcmd = *buf++; |
531 | if ((*buf & HC_ACMD_MASK) != HC_ACMD_HCmdA) { | |
532 | DRM_ERROR("Expected Vertex List A command, got 0x%x\n", | |
533 | *buf); | |
534 | ret = 1; | |
535 | break; | |
536 | } | |
b5e89ed5 DA |
537 | a_fire = |
538 | *buf++ | HC_HPLEND_MASK | HC_HPMValidN_MASK | | |
539 | HC_HE3Fire_MASK; | |
540 | ||
22f579c6 DA |
541 | /* |
542 | * How many dwords per vertex ? | |
b5e89ed5 DA |
543 | */ |
544 | ||
22f579c6 DA |
545 | if (cur_seq->agp && ((bcmd & (0xF << 11)) == 0)) { |
546 | DRM_ERROR("Illegal B command vertex data for AGP.\n"); | |
547 | ret = 1; | |
548 | break; | |
b5e89ed5 | 549 | } |
22f579c6 DA |
550 | |
551 | dw_count = 0; | |
b5e89ed5 DA |
552 | if (bcmd & (1 << 7)) |
553 | dw_count += (cur_seq->multitex) ? 2 : 1; | |
554 | if (bcmd & (1 << 8)) | |
555 | dw_count += (cur_seq->multitex) ? 2 : 1; | |
556 | if (bcmd & (1 << 9)) | |
557 | dw_count++; | |
558 | if (bcmd & (1 << 10)) | |
559 | dw_count++; | |
560 | if (bcmd & (1 << 11)) | |
561 | dw_count++; | |
562 | if (bcmd & (1 << 12)) | |
563 | dw_count++; | |
564 | if (bcmd & (1 << 13)) | |
565 | dw_count++; | |
566 | if (bcmd & (1 << 14)) | |
567 | dw_count++; | |
568 | ||
569 | while (buf < buf_end) { | |
22f579c6 | 570 | if (*buf == a_fire) { |
b5e89ed5 DA |
571 | if (dev_priv->num_fire_offsets >= |
572 | VIA_FIRE_BUF_SIZE) { | |
22f579c6 DA |
573 | DRM_ERROR("Fire offset buffer full.\n"); |
574 | ret = 1; | |
575 | break; | |
576 | } | |
b5e89ed5 DA |
577 | dev_priv->fire_offsets[dev_priv-> |
578 | num_fire_offsets++] = | |
579 | buf; | |
580 | have_fire = 1; | |
22f579c6 | 581 | buf++; |
b5e89ed5 | 582 | if (buf < buf_end && *buf == a_fire) |
22f579c6 DA |
583 | buf++; |
584 | break; | |
585 | } | |
b5e89ed5 | 586 | if ((*buf == HALCYON_HEADER2) || |
22f579c6 DA |
587 | ((*buf & HALCYON_FIREMASK) == HALCYON_FIRECMD)) { |
588 | DRM_ERROR("Missing Vertex Fire command, " | |
589 | "Stray Vertex Fire command or verifier " | |
590 | "lost sync.\n"); | |
591 | ret = 1; | |
592 | break; | |
593 | } | |
594 | if ((ret = eat_words(&buf, buf_end, dw_count))) | |
595 | break; | |
596 | } | |
597 | if (buf >= buf_end && !have_fire) { | |
598 | DRM_ERROR("Missing Vertex Fire command or verifier " | |
599 | "lost sync.\n"); | |
600 | ret = 1; | |
601 | break; | |
602 | } | |
603 | if (cur_seq->agp && ((buf - cur_seq->buf_start) & 0x01)) { | |
604 | DRM_ERROR("AGP Primitive list end misaligned.\n"); | |
605 | ret = 1; | |
606 | break; | |
607 | } | |
b5e89ed5 | 608 | } |
22f579c6 DA |
609 | *buffer = buf; |
610 | return ret; | |
611 | } | |
612 | ||
22f579c6 | 613 | static __inline__ verifier_state_t |
b5e89ed5 DA |
614 | via_check_header2(uint32_t const **buffer, const uint32_t * buf_end, |
615 | drm_via_state_t * hc_state) | |
22f579c6 DA |
616 | { |
617 | uint32_t cmd; | |
618 | int hz_mode; | |
619 | hazard_t hz; | |
620 | const uint32_t *buf = *buffer; | |
621 | const hazard_t *hz_table; | |
622 | ||
22f579c6 | 623 | if ((buf_end - buf) < 2) { |
b5e89ed5 DA |
624 | DRM_ERROR |
625 | ("Illegal termination of DMA HALCYON_HEADER2 sequence.\n"); | |
22f579c6 DA |
626 | return state_error; |
627 | } | |
628 | buf++; | |
629 | cmd = (*buf++ & 0xFFFF0000) >> 16; | |
630 | ||
b5e89ed5 | 631 | switch (cmd) { |
22f579c6 | 632 | case HC_ParaType_CmdVdata: |
b5e89ed5 | 633 | if (via_check_prim_list(&buf, buf_end, hc_state)) |
22f579c6 DA |
634 | return state_error; |
635 | *buffer = buf; | |
636 | return state_command; | |
637 | case HC_ParaType_NotTex: | |
638 | hz_table = table1; | |
639 | break; | |
640 | case HC_ParaType_Tex: | |
641 | hc_state->texture = 0; | |
642 | hz_table = table2; | |
643 | break; | |
644 | case (HC_ParaType_Tex | (HC_SubType_Tex1 << 8)): | |
645 | hc_state->texture = 1; | |
646 | hz_table = table2; | |
647 | break; | |
648 | case (HC_ParaType_Tex | (HC_SubType_TexGeneral << 8)): | |
649 | hz_table = table3; | |
650 | break; | |
651 | case HC_ParaType_Auto: | |
652 | if (eat_words(&buf, buf_end, 2)) | |
653 | return state_error; | |
654 | *buffer = buf; | |
655 | return state_command; | |
656 | case (HC_ParaType_Palette | (HC_SubType_Stipple << 8)): | |
657 | if (eat_words(&buf, buf_end, 32)) | |
658 | return state_error; | |
659 | *buffer = buf; | |
660 | return state_command; | |
661 | case (HC_ParaType_Palette | (HC_SubType_TexPalette0 << 8)): | |
662 | case (HC_ParaType_Palette | (HC_SubType_TexPalette1 << 8)): | |
663 | DRM_ERROR("Texture palettes are rejected because of " | |
664 | "lack of info how to determine their size.\n"); | |
665 | return state_error; | |
666 | case (HC_ParaType_Palette | (HC_SubType_FogTable << 8)): | |
667 | DRM_ERROR("Fog factor palettes are rejected because of " | |
668 | "lack of info how to determine their size.\n"); | |
669 | return state_error; | |
670 | default: | |
671 | ||
672 | /* | |
673 | * There are some unimplemented HC_ParaTypes here, that | |
674 | * need to be implemented if the Mesa driver is extended. | |
675 | */ | |
676 | ||
677 | DRM_ERROR("Invalid or unimplemented HALCYON_HEADER2 " | |
b5e89ed5 DA |
678 | "DMA subcommand: 0x%x. Previous dword: 0x%x\n", |
679 | cmd, *(buf - 2)); | |
22f579c6 DA |
680 | *buffer = buf; |
681 | return state_error; | |
682 | } | |
683 | ||
b5e89ed5 | 684 | while (buf < buf_end) { |
22f579c6 DA |
685 | cmd = *buf++; |
686 | if ((hz = hz_table[cmd >> 24])) { | |
687 | if ((hz_mode = investigate_hazard(cmd, hz, hc_state))) { | |
688 | if (hz_mode == 1) { | |
689 | buf--; | |
690 | break; | |
691 | } | |
692 | return state_error; | |
693 | } | |
b5e89ed5 | 694 | } else if (hc_state->unfinished && |
22f579c6 DA |
695 | finish_current_sequence(hc_state)) { |
696 | return state_error; | |
697 | } | |
698 | } | |
699 | if (hc_state->unfinished && finish_current_sequence(hc_state)) { | |
700 | return state_error; | |
701 | } | |
702 | *buffer = buf; | |
703 | return state_command; | |
704 | } | |
705 | ||
706 | static __inline__ verifier_state_t | |
b5e89ed5 DA |
707 | via_parse_header2(drm_via_private_t * dev_priv, uint32_t const **buffer, |
708 | const uint32_t * buf_end, int *fire_count) | |
22f579c6 DA |
709 | { |
710 | uint32_t cmd; | |
711 | const uint32_t *buf = *buffer; | |
b5e89ed5 | 712 | const uint32_t *next_fire; |
22f579c6 DA |
713 | int burst = 0; |
714 | ||
715 | next_fire = dev_priv->fire_offsets[*fire_count]; | |
716 | buf++; | |
717 | cmd = (*buf & 0xFFFF0000) >> 16; | |
718 | VIA_WRITE(HC_REG_TRANS_SET + HC_REG_BASE, *buf++); | |
b5e89ed5 | 719 | switch (cmd) { |
22f579c6 DA |
720 | case HC_ParaType_CmdVdata: |
721 | while ((buf < buf_end) && | |
b5e89ed5 DA |
722 | (*fire_count < dev_priv->num_fire_offsets) && |
723 | (*buf & HC_ACMD_MASK) == HC_ACMD_HCmdB) { | |
724 | while (buf <= next_fire) { | |
725 | VIA_WRITE(HC_REG_TRANS_SPACE + HC_REG_BASE + | |
726 | (burst & 63), *buf++); | |
22f579c6 DA |
727 | burst += 4; |
728 | } | |
b5e89ed5 DA |
729 | if ((buf < buf_end) |
730 | && ((*buf & HALCYON_FIREMASK) == HALCYON_FIRECMD)) | |
22f579c6 DA |
731 | buf++; |
732 | ||
b5e89ed5 | 733 | if (++(*fire_count) < dev_priv->num_fire_offsets) |
22f579c6 DA |
734 | next_fire = dev_priv->fire_offsets[*fire_count]; |
735 | } | |
736 | break; | |
737 | default: | |
b5e89ed5 DA |
738 | while (buf < buf_end) { |
739 | ||
740 | if (*buf == HC_HEADER2 || | |
741 | (*buf & HALCYON_HEADER1MASK) == HALCYON_HEADER1 || | |
742 | (*buf & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5 || | |
743 | (*buf & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6) | |
744 | break; | |
745 | ||
746 | VIA_WRITE(HC_REG_TRANS_SPACE + HC_REG_BASE + | |
747 | (burst & 63), *buf++); | |
748 | burst += 4; | |
22f579c6 DA |
749 | } |
750 | } | |
751 | *buffer = buf; | |
752 | return state_command; | |
753 | } | |
754 | ||
b5e89ed5 | 755 | static __inline__ int verify_mmio_address(uint32_t address) |
22f579c6 | 756 | { |
b5e89ed5 | 757 | if ((address > 0x3FF) && (address < 0xC00)) { |
22f579c6 DA |
758 | DRM_ERROR("Invalid VIDEO DMA command. " |
759 | "Attempt to access 3D- or command burst area.\n"); | |
760 | return 1; | |
761 | } else if ((address > 0xCFF) && (address < 0x1300)) { | |
762 | DRM_ERROR("Invalid VIDEO DMA command. " | |
763 | "Attempt to access PCI DMA area.\n"); | |
b5e89ed5 DA |
764 | return 1; |
765 | } else if (address > 0x13FF) { | |
22f579c6 DA |
766 | DRM_ERROR("Invalid VIDEO DMA command. " |
767 | "Attempt to access VGA registers.\n"); | |
768 | return 1; | |
769 | } | |
770 | return 0; | |
771 | } | |
772 | ||
773 | static __inline__ int | |
b5e89ed5 DA |
774 | verify_video_tail(uint32_t const **buffer, const uint32_t * buf_end, |
775 | uint32_t dwords) | |
22f579c6 DA |
776 | { |
777 | const uint32_t *buf = *buffer; | |
778 | ||
779 | if (buf_end - buf < dwords) { | |
780 | DRM_ERROR("Illegal termination of video command.\n"); | |
781 | return 1; | |
782 | } | |
783 | while (dwords--) { | |
784 | if (*buf++) { | |
785 | DRM_ERROR("Illegal video command tail.\n"); | |
786 | return 1; | |
787 | } | |
788 | } | |
789 | *buffer = buf; | |
790 | return 0; | |
791 | } | |
22f579c6 DA |
792 | |
793 | static __inline__ verifier_state_t | |
b5e89ed5 | 794 | via_check_header1(uint32_t const **buffer, const uint32_t * buf_end) |
22f579c6 DA |
795 | { |
796 | uint32_t cmd; | |
797 | const uint32_t *buf = *buffer; | |
798 | verifier_state_t ret = state_command; | |
799 | ||
800 | while (buf < buf_end) { | |
801 | cmd = *buf; | |
802 | if ((cmd > ((0x3FF >> 2) | HALCYON_HEADER1)) && | |
b5e89ed5 DA |
803 | (cmd < ((0xC00 >> 2) | HALCYON_HEADER1))) { |
804 | if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1) | |
22f579c6 DA |
805 | break; |
806 | DRM_ERROR("Invalid HALCYON_HEADER1 command. " | |
807 | "Attempt to access 3D- or command burst area.\n"); | |
808 | ret = state_error; | |
809 | break; | |
810 | } else if (cmd > ((0xCFF >> 2) | HALCYON_HEADER1)) { | |
b5e89ed5 | 811 | if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1) |
22f579c6 DA |
812 | break; |
813 | DRM_ERROR("Invalid HALCYON_HEADER1 command. " | |
814 | "Attempt to access VGA registers.\n"); | |
815 | ret = state_error; | |
b5e89ed5 DA |
816 | break; |
817 | } else { | |
22f579c6 DA |
818 | buf += 2; |
819 | } | |
820 | } | |
821 | *buffer = buf; | |
822 | return ret; | |
823 | } | |
824 | ||
825 | static __inline__ verifier_state_t | |
b5e89ed5 DA |
826 | via_parse_header1(drm_via_private_t * dev_priv, uint32_t const **buffer, |
827 | const uint32_t * buf_end) | |
22f579c6 DA |
828 | { |
829 | register uint32_t cmd; | |
830 | const uint32_t *buf = *buffer; | |
831 | ||
832 | while (buf < buf_end) { | |
833 | cmd = *buf; | |
b5e89ed5 DA |
834 | if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1) |
835 | break; | |
836 | VIA_WRITE((cmd & ~HALCYON_HEADER1MASK) << 2, *++buf); | |
22f579c6 DA |
837 | buf++; |
838 | } | |
839 | *buffer = buf; | |
840 | return state_command; | |
841 | } | |
842 | ||
843 | static __inline__ verifier_state_t | |
b5e89ed5 | 844 | via_check_vheader5(uint32_t const **buffer, const uint32_t * buf_end) |
22f579c6 DA |
845 | { |
846 | uint32_t data; | |
847 | const uint32_t *buf = *buffer; | |
848 | ||
849 | if (buf_end - buf < 4) { | |
850 | DRM_ERROR("Illegal termination of video header5 command\n"); | |
851 | return state_error; | |
852 | } | |
853 | ||
854 | data = *buf++ & ~VIA_VIDEOMASK; | |
855 | if (verify_mmio_address(data)) | |
856 | return state_error; | |
857 | ||
858 | data = *buf++; | |
859 | if (*buf++ != 0x00F50000) { | |
860 | DRM_ERROR("Illegal header5 header data\n"); | |
861 | return state_error; | |
862 | } | |
863 | if (*buf++ != 0x00000000) { | |
864 | DRM_ERROR("Illegal header5 header data\n"); | |
865 | return state_error; | |
866 | } | |
b5e89ed5 | 867 | if (eat_words(&buf, buf_end, data)) |
22f579c6 | 868 | return state_error; |
b5e89ed5 | 869 | if ((data & 3) && verify_video_tail(&buf, buf_end, 4 - (data & 3))) |
22f579c6 DA |
870 | return state_error; |
871 | *buffer = buf; | |
872 | return state_command; | |
b5e89ed5 DA |
873 | |
874 | } | |
22f579c6 DA |
875 | |
876 | static __inline__ verifier_state_t | |
b5e89ed5 DA |
877 | via_parse_vheader5(drm_via_private_t * dev_priv, uint32_t const **buffer, |
878 | const uint32_t * buf_end) | |
22f579c6 | 879 | { |
b5e89ed5 | 880 | uint32_t addr, count, i; |
22f579c6 | 881 | const uint32_t *buf = *buffer; |
b5e89ed5 | 882 | |
22f579c6 DA |
883 | addr = *buf++ & ~VIA_VIDEOMASK; |
884 | i = count = *buf; | |
885 | buf += 3; | |
b5e89ed5 | 886 | while (i--) { |
22f579c6 DA |
887 | VIA_WRITE(addr, *buf++); |
888 | } | |
b5e89ed5 DA |
889 | if (count & 3) |
890 | buf += 4 - (count & 3); | |
22f579c6 | 891 | *buffer = buf; |
b5e89ed5 DA |
892 | return state_command; |
893 | } | |
22f579c6 DA |
894 | |
895 | static __inline__ verifier_state_t | |
b5e89ed5 | 896 | via_check_vheader6(uint32_t const **buffer, const uint32_t * buf_end) |
22f579c6 DA |
897 | { |
898 | uint32_t data; | |
899 | const uint32_t *buf = *buffer; | |
900 | uint32_t i; | |
901 | ||
22f579c6 DA |
902 | if (buf_end - buf < 4) { |
903 | DRM_ERROR("Illegal termination of video header6 command\n"); | |
904 | return state_error; | |
905 | } | |
906 | buf++; | |
907 | data = *buf++; | |
908 | if (*buf++ != 0x00F60000) { | |
909 | DRM_ERROR("Illegal header6 header data\n"); | |
910 | return state_error; | |
911 | } | |
912 | if (*buf++ != 0x00000000) { | |
913 | DRM_ERROR("Illegal header6 header data\n"); | |
914 | return state_error; | |
915 | } | |
916 | if ((buf_end - buf) < (data << 1)) { | |
917 | DRM_ERROR("Illegal termination of video header6 command\n"); | |
918 | return state_error; | |
919 | } | |
b5e89ed5 | 920 | for (i = 0; i < data; ++i) { |
22f579c6 DA |
921 | if (verify_mmio_address(*buf++)) |
922 | return state_error; | |
923 | buf++; | |
924 | } | |
925 | data <<= 1; | |
926 | if ((data & 3) && verify_video_tail(&buf, buf_end, 4 - (data & 3))) | |
927 | return state_error; | |
928 | *buffer = buf; | |
929 | return state_command; | |
b5e89ed5 | 930 | } |
22f579c6 DA |
931 | |
932 | static __inline__ verifier_state_t | |
b5e89ed5 DA |
933 | via_parse_vheader6(drm_via_private_t * dev_priv, uint32_t const **buffer, |
934 | const uint32_t * buf_end) | |
22f579c6 DA |
935 | { |
936 | ||
b5e89ed5 | 937 | uint32_t addr, count, i; |
22f579c6 DA |
938 | const uint32_t *buf = *buffer; |
939 | ||
940 | i = count = *++buf; | |
941 | buf += 3; | |
b5e89ed5 | 942 | while (i--) { |
22f579c6 DA |
943 | addr = *buf++; |
944 | VIA_WRITE(addr, *buf++); | |
945 | } | |
946 | count <<= 1; | |
b5e89ed5 DA |
947 | if (count & 3) |
948 | buf += 4 - (count & 3); | |
22f579c6 DA |
949 | *buffer = buf; |
950 | return state_command; | |
b5e89ed5 | 951 | } |
22f579c6 | 952 | |
b5e89ed5 DA |
953 | int |
954 | via_verify_command_stream(const uint32_t * buf, unsigned int size, | |
955 | drm_device_t * dev, int agp) | |
22f579c6 DA |
956 | { |
957 | ||
958 | drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; | |
959 | drm_via_state_t *hc_state = &dev_priv->hc_state; | |
960 | drm_via_state_t saved_state = *hc_state; | |
961 | uint32_t cmd; | |
b5e89ed5 | 962 | const uint32_t *buf_end = buf + (size >> 2); |
22f579c6 DA |
963 | verifier_state_t state = state_command; |
964 | int pro_group_a = dev_priv->pro_group_a; | |
b5e89ed5 | 965 | |
22f579c6 DA |
966 | hc_state->dev = dev; |
967 | hc_state->unfinished = no_sequence; | |
968 | hc_state->map_cache = NULL; | |
969 | hc_state->agp = agp; | |
970 | hc_state->buf_start = buf; | |
971 | dev_priv->num_fire_offsets = 0; | |
972 | ||
973 | while (buf < buf_end) { | |
974 | ||
975 | switch (state) { | |
976 | case state_header2: | |
b5e89ed5 | 977 | state = via_check_header2(&buf, buf_end, hc_state); |
22f579c6 DA |
978 | break; |
979 | case state_header1: | |
b5e89ed5 | 980 | state = via_check_header1(&buf, buf_end); |
22f579c6 DA |
981 | break; |
982 | case state_vheader5: | |
b5e89ed5 | 983 | state = via_check_vheader5(&buf, buf_end); |
22f579c6 DA |
984 | break; |
985 | case state_vheader6: | |
b5e89ed5 | 986 | state = via_check_vheader6(&buf, buf_end); |
22f579c6 DA |
987 | break; |
988 | case state_command: | |
b5e89ed5 | 989 | if (HALCYON_HEADER2 == (cmd = *buf)) |
22f579c6 | 990 | state = state_header2; |
b5e89ed5 | 991 | else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) |
22f579c6 | 992 | state = state_header1; |
b5e89ed5 DA |
993 | else if (pro_group_a |
994 | && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5) | |
22f579c6 | 995 | state = state_vheader5; |
b5e89ed5 DA |
996 | else if (pro_group_a |
997 | && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6) | |
22f579c6 DA |
998 | state = state_vheader6; |
999 | else { | |
b5e89ed5 DA |
1000 | DRM_ERROR |
1001 | ("Invalid / Unimplemented DMA HEADER command. 0x%x\n", | |
1002 | cmd); | |
22f579c6 DA |
1003 | state = state_error; |
1004 | } | |
1005 | break; | |
1006 | case state_error: | |
1007 | default: | |
1008 | *hc_state = saved_state; | |
b5e89ed5 | 1009 | return DRM_ERR(EINVAL); |
22f579c6 | 1010 | } |
b5e89ed5 | 1011 | } |
22f579c6 DA |
1012 | if (state == state_error) { |
1013 | *hc_state = saved_state; | |
1014 | return DRM_ERR(EINVAL); | |
1015 | } | |
1016 | return 0; | |
1017 | } | |
1018 | ||
b5e89ed5 DA |
1019 | int |
1020 | via_parse_command_stream(drm_device_t * dev, const uint32_t * buf, | |
1021 | unsigned int size) | |
22f579c6 DA |
1022 | { |
1023 | ||
1024 | drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; | |
1025 | uint32_t cmd; | |
b5e89ed5 | 1026 | const uint32_t *buf_end = buf + (size >> 2); |
22f579c6 DA |
1027 | verifier_state_t state = state_command; |
1028 | int fire_count = 0; | |
b5e89ed5 | 1029 | |
22f579c6 DA |
1030 | while (buf < buf_end) { |
1031 | ||
1032 | switch (state) { | |
1033 | case state_header2: | |
b5e89ed5 DA |
1034 | state = |
1035 | via_parse_header2(dev_priv, &buf, buf_end, | |
1036 | &fire_count); | |
22f579c6 DA |
1037 | break; |
1038 | case state_header1: | |
b5e89ed5 | 1039 | state = via_parse_header1(dev_priv, &buf, buf_end); |
22f579c6 DA |
1040 | break; |
1041 | case state_vheader5: | |
b5e89ed5 | 1042 | state = via_parse_vheader5(dev_priv, &buf, buf_end); |
22f579c6 DA |
1043 | break; |
1044 | case state_vheader6: | |
b5e89ed5 | 1045 | state = via_parse_vheader6(dev_priv, &buf, buf_end); |
22f579c6 DA |
1046 | break; |
1047 | case state_command: | |
b5e89ed5 | 1048 | if (HALCYON_HEADER2 == (cmd = *buf)) |
22f579c6 | 1049 | state = state_header2; |
b5e89ed5 | 1050 | else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) |
22f579c6 DA |
1051 | state = state_header1; |
1052 | else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5) | |
1053 | state = state_vheader5; | |
1054 | else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6) | |
1055 | state = state_vheader6; | |
1056 | else { | |
b5e89ed5 DA |
1057 | DRM_ERROR |
1058 | ("Invalid / Unimplemented DMA HEADER command. 0x%x\n", | |
1059 | cmd); | |
22f579c6 DA |
1060 | state = state_error; |
1061 | } | |
1062 | break; | |
1063 | case state_error: | |
1064 | default: | |
b5e89ed5 | 1065 | return DRM_ERR(EINVAL); |
22f579c6 | 1066 | } |
b5e89ed5 | 1067 | } |
22f579c6 DA |
1068 | if (state == state_error) { |
1069 | return DRM_ERR(EINVAL); | |
1070 | } | |
1071 | return 0; | |
1072 | } | |
1073 | ||
b5e89ed5 | 1074 | static void |
22f579c6 DA |
1075 | setup_hazard_table(hz_init_t init_table[], hazard_t table[], int size) |
1076 | { | |
1077 | int i; | |
1078 | ||
b5e89ed5 | 1079 | for (i = 0; i < 256; ++i) { |
22f579c6 DA |
1080 | table[i] = forbidden_command; |
1081 | } | |
1082 | ||
b5e89ed5 | 1083 | for (i = 0; i < size; ++i) { |
22f579c6 DA |
1084 | table[init_table[i].code] = init_table[i].hz; |
1085 | } | |
1086 | } | |
1087 | ||
b5e89ed5 | 1088 | void via_init_command_verifier(void) |
22f579c6 | 1089 | { |
b5e89ed5 DA |
1090 | setup_hazard_table(init_table1, table1, |
1091 | sizeof(init_table1) / sizeof(hz_init_t)); | |
1092 | setup_hazard_table(init_table2, table2, | |
1093 | sizeof(init_table2) / sizeof(hz_init_t)); | |
1094 | setup_hazard_table(init_table3, table3, | |
1095 | sizeof(init_table3) / sizeof(hz_init_t)); | |
22f579c6 | 1096 | } |