1 /* r300_cmdbuf.c -- Command buffer emission for R300 -*- linux-c -*-
2 *
3 * Copyright (C) The Weather Channel, Inc. 2002.
4 * Copyright (C) 2004 Nicolai Haehnle.
5 * All Rights Reserved.
6 *
7 * The Weather Channel (TM) funded Tungsten Graphics to develop the
8 * initial release of the Radeon 8500 driver under the XFree86 license.
9 * This notice must be preserved.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice (including the next
19 * paragraph) shall be included in all copies or substantial portions of the
20 * Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
26 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
27 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28 * DEALINGS IN THE SOFTWARE.
29 *
30 * Authors:
31 * Nicolai Haehnle <prefect_@gmx.net>
32 *
33 * ------------------------ This file is DEPRECATED! -------------------------
34 */
35
36 #include <drm/drmP.h>
37 #include <drm/radeon_drm.h>
38 #include "radeon_drv.h"
39 #include "r300_reg.h"
40 #include "drm_buffer.h"
41
42 #include <asm/unaligned.h>
43
44 #define R300_SIMULTANEOUS_CLIPRECTS 4
45
46 /* Values for R300_RE_CLIPRECT_CNTL depending on the number of cliprects
47 */
48 static const int r300_cliprect_cntl[4] = {
49 0xAAAA,
50 0xEEEE,
51 0xFEFE,
52 0xFFFE
53 };
54
55 /**
56 * Emit up to R300_SIMULTANEOUS_CLIPRECTS cliprects from the given command
57 * buffer, starting with index n.
58 */
r300_emit_cliprects(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,int n)59 static int r300_emit_cliprects(drm_radeon_private_t *dev_priv,
60 drm_radeon_kcmd_buffer_t *cmdbuf, int n)
61 {
62 struct drm_clip_rect box;
63 int nr;
64 int i;
65 RING_LOCALS;
66
67 nr = cmdbuf->nbox - n;
68 if (nr > R300_SIMULTANEOUS_CLIPRECTS)
69 nr = R300_SIMULTANEOUS_CLIPRECTS;
70
71 DRM_DEBUG("%i cliprects\n", nr);
72
73 if (nr) {
74 BEGIN_RING(6 + nr * 2);
75 OUT_RING(CP_PACKET0(R300_RE_CLIPRECT_TL_0, nr * 2 - 1));
76
77 for (i = 0; i < nr; ++i) {
78 if (copy_from_user
79 (&box, &cmdbuf->boxes[n + i], sizeof(box))) {
80 DRM_ERROR("copy cliprect faulted\n");
81 return -EFAULT;
82 }
83
84 box.x2--; /* Hardware expects inclusive bottom-right corner */
85 box.y2--;
86
87 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RV515) {
88 box.x1 = (box.x1) &
89 R300_CLIPRECT_MASK;
90 box.y1 = (box.y1) &
91 R300_CLIPRECT_MASK;
92 box.x2 = (box.x2) &
93 R300_CLIPRECT_MASK;
94 box.y2 = (box.y2) &
95 R300_CLIPRECT_MASK;
96 } else {
97 box.x1 = (box.x1 + R300_CLIPRECT_OFFSET) &
98 R300_CLIPRECT_MASK;
99 box.y1 = (box.y1 + R300_CLIPRECT_OFFSET) &
100 R300_CLIPRECT_MASK;
101 box.x2 = (box.x2 + R300_CLIPRECT_OFFSET) &
102 R300_CLIPRECT_MASK;
103 box.y2 = (box.y2 + R300_CLIPRECT_OFFSET) &
104 R300_CLIPRECT_MASK;
105 }
106
107 OUT_RING((box.x1 << R300_CLIPRECT_X_SHIFT) |
108 (box.y1 << R300_CLIPRECT_Y_SHIFT));
109 OUT_RING((box.x2 << R300_CLIPRECT_X_SHIFT) |
110 (box.y2 << R300_CLIPRECT_Y_SHIFT));
111
112 }
113
114 OUT_RING_REG(R300_RE_CLIPRECT_CNTL, r300_cliprect_cntl[nr - 1]);
115
116 /* TODO/SECURITY: Force scissors to a safe value, otherwise the
117 * client might be able to trample over memory.
118 * The impact should be very limited, but I'd rather be safe than
119 * sorry.
120 */
121 OUT_RING(CP_PACKET0(R300_RE_SCISSORS_TL, 1));
122 OUT_RING(0);
123 OUT_RING(R300_SCISSORS_X_MASK | R300_SCISSORS_Y_MASK);
124 ADVANCE_RING();
125 } else {
126 /* Why we allow zero cliprect rendering:
127 * There are some commands in a command buffer that must be submitted
128 * even when there are no cliprects, e.g. DMA buffer discard
129 * or state setting (though state setting could be avoided by
130 * simulating a loss of context).
131 *
132 * Now since the cmdbuf interface is so chaotic right now (and is
133 * bound to remain that way for a bit until things settle down),
134 * it is basically impossible to filter out the commands that are
135 * necessary and those that aren't.
136 *
137 * So I choose the safe way and don't do any filtering at all;
138 * instead, I simply set up the engine so that all rendering
139 * can't produce any fragments.
140 */
141 BEGIN_RING(2);
142 OUT_RING_REG(R300_RE_CLIPRECT_CNTL, 0);
143 ADVANCE_RING();
144 }
145
146 /* flus cache and wait idle clean after cliprect change */
147 BEGIN_RING(2);
148 OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
149 OUT_RING(R300_RB3D_DC_FLUSH);
150 ADVANCE_RING();
151 BEGIN_RING(2);
152 OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
153 OUT_RING(RADEON_WAIT_3D_IDLECLEAN);
154 ADVANCE_RING();
155 /* set flush flag */
156 dev_priv->track_flush |= RADEON_FLUSH_EMITED;
157
158 return 0;
159 }
160
161 static u8 r300_reg_flags[0x10000 >> 2];
162
r300_init_reg_flags(struct drm_device * dev)163 void r300_init_reg_flags(struct drm_device *dev)
164 {
165 int i;
166 drm_radeon_private_t *dev_priv = dev->dev_private;
167
168 memset(r300_reg_flags, 0, 0x10000 >> 2);
169 #define ADD_RANGE_MARK(reg, count,mark) \
170 for(i=((reg)>>2);i<((reg)>>2)+(count);i++)\
171 r300_reg_flags[i]|=(mark);
172
173 #define MARK_SAFE 1
174 #define MARK_CHECK_OFFSET 2
175
176 #define ADD_RANGE(reg, count) ADD_RANGE_MARK(reg, count, MARK_SAFE)
177
178 /* these match cmducs() command in r300_driver/r300/r300_cmdbuf.c */
179 ADD_RANGE(R300_SE_VPORT_XSCALE, 6);
180 ADD_RANGE(R300_VAP_CNTL, 1);
181 ADD_RANGE(R300_SE_VTE_CNTL, 2);
182 ADD_RANGE(0x2134, 2);
183 ADD_RANGE(R300_VAP_CNTL_STATUS, 1);
184 ADD_RANGE(R300_VAP_INPUT_CNTL_0, 2);
185 ADD_RANGE(0x21DC, 1);
186 ADD_RANGE(R300_VAP_UNKNOWN_221C, 1);
187 ADD_RANGE(R300_VAP_CLIP_X_0, 4);
188 ADD_RANGE(R300_VAP_PVS_STATE_FLUSH_REG, 1);
189 ADD_RANGE(R300_VAP_UNKNOWN_2288, 1);
190 ADD_RANGE(R300_VAP_OUTPUT_VTX_FMT_0, 2);
191 ADD_RANGE(R300_VAP_PVS_CNTL_1, 3);
192 ADD_RANGE(R300_GB_ENABLE, 1);
193 ADD_RANGE(R300_GB_MSPOS0, 5);
194 ADD_RANGE(R300_TX_INVALTAGS, 1);
195 ADD_RANGE(R300_TX_ENABLE, 1);
196 ADD_RANGE(0x4200, 4);
197 ADD_RANGE(0x4214, 1);
198 ADD_RANGE(R300_RE_POINTSIZE, 1);
199 ADD_RANGE(0x4230, 3);
200 ADD_RANGE(R300_RE_LINE_CNT, 1);
201 ADD_RANGE(R300_RE_UNK4238, 1);
202 ADD_RANGE(0x4260, 3);
203 ADD_RANGE(R300_RE_SHADE, 4);
204 ADD_RANGE(R300_RE_POLYGON_MODE, 5);
205 ADD_RANGE(R300_RE_ZBIAS_CNTL, 1);
206 ADD_RANGE(R300_RE_ZBIAS_T_FACTOR, 4);
207 ADD_RANGE(R300_RE_OCCLUSION_CNTL, 1);
208 ADD_RANGE(R300_RE_CULL_CNTL, 1);
209 ADD_RANGE(0x42C0, 2);
210 ADD_RANGE(R300_RS_CNTL_0, 2);
211
212 ADD_RANGE(R300_SU_REG_DEST, 1);
213 if ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV530)
214 ADD_RANGE(RV530_FG_ZBREG_DEST, 1);
215
216 ADD_RANGE(R300_SC_HYPERZ, 2);
217 ADD_RANGE(0x43E8, 1);
218
219 ADD_RANGE(0x46A4, 5);
220
221 ADD_RANGE(R300_RE_FOG_STATE, 1);
222 ADD_RANGE(R300_FOG_COLOR_R, 3);
223 ADD_RANGE(R300_PP_ALPHA_TEST, 2);
224 ADD_RANGE(0x4BD8, 1);
225 ADD_RANGE(R300_PFS_PARAM_0_X, 64);
226 ADD_RANGE(0x4E00, 1);
227 ADD_RANGE(R300_RB3D_CBLEND, 2);
228 ADD_RANGE(R300_RB3D_COLORMASK, 1);
229 ADD_RANGE(R300_RB3D_BLEND_COLOR, 3);
230 ADD_RANGE_MARK(R300_RB3D_COLOROFFSET0, 1, MARK_CHECK_OFFSET); /* check offset */
231 ADD_RANGE(R300_RB3D_COLORPITCH0, 1);
232 ADD_RANGE(0x4E50, 9);
233 ADD_RANGE(0x4E88, 1);
234 ADD_RANGE(0x4EA0, 2);
235 ADD_RANGE(R300_ZB_CNTL, 3);
236 ADD_RANGE(R300_ZB_FORMAT, 4);
237 ADD_RANGE_MARK(R300_ZB_DEPTHOFFSET, 1, MARK_CHECK_OFFSET); /* check offset */
238 ADD_RANGE(R300_ZB_DEPTHPITCH, 1);
239 ADD_RANGE(R300_ZB_DEPTHCLEARVALUE, 1);
240 ADD_RANGE(R300_ZB_ZMASK_OFFSET, 13);
241 ADD_RANGE(R300_ZB_ZPASS_DATA, 2); /* ZB_ZPASS_DATA, ZB_ZPASS_ADDR */
242
243 ADD_RANGE(R300_TX_FILTER_0, 16);
244 ADD_RANGE(R300_TX_FILTER1_0, 16);
245 ADD_RANGE(R300_TX_SIZE_0, 16);
246 ADD_RANGE(R300_TX_FORMAT_0, 16);
247 ADD_RANGE(R300_TX_PITCH_0, 16);
248 /* Texture offset is dangerous and needs more checking */
249 ADD_RANGE_MARK(R300_TX_OFFSET_0, 16, MARK_CHECK_OFFSET);
250 ADD_RANGE(R300_TX_CHROMA_KEY_0, 16);
251 ADD_RANGE(R300_TX_BORDER_COLOR_0, 16);
252
253 /* Sporadic registers used as primitives are emitted */
254 ADD_RANGE(R300_ZB_ZCACHE_CTLSTAT, 1);
255 ADD_RANGE(R300_RB3D_DSTCACHE_CTLSTAT, 1);
256 ADD_RANGE(R300_VAP_INPUT_ROUTE_0_0, 8);
257 ADD_RANGE(R300_VAP_INPUT_ROUTE_1_0, 8);
258
259 if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RV515) {
260 ADD_RANGE(R500_VAP_INDEX_OFFSET, 1);
261 ADD_RANGE(R500_US_CONFIG, 2);
262 ADD_RANGE(R500_US_CODE_ADDR, 3);
263 ADD_RANGE(R500_US_FC_CTRL, 1);
264 ADD_RANGE(R500_RS_IP_0, 16);
265 ADD_RANGE(R500_RS_INST_0, 16);
266 ADD_RANGE(R500_RB3D_COLOR_CLEAR_VALUE_AR, 2);
267 ADD_RANGE(R500_RB3D_CONSTANT_COLOR_AR, 2);
268 ADD_RANGE(R500_ZB_FIFO_SIZE, 2);
269 } else {
270 ADD_RANGE(R300_PFS_CNTL_0, 3);
271 ADD_RANGE(R300_PFS_NODE_0, 4);
272 ADD_RANGE(R300_PFS_TEXI_0, 64);
273 ADD_RANGE(R300_PFS_INSTR0_0, 64);
274 ADD_RANGE(R300_PFS_INSTR1_0, 64);
275 ADD_RANGE(R300_PFS_INSTR2_0, 64);
276 ADD_RANGE(R300_PFS_INSTR3_0, 64);
277 ADD_RANGE(R300_RS_INTERP_0, 8);
278 ADD_RANGE(R300_RS_ROUTE_0, 8);
279
280 }
281 }
282
r300_check_range(unsigned reg,int count)283 static __inline__ int r300_check_range(unsigned reg, int count)
284 {
285 int i;
286 if (reg & ~0xffff)
287 return -1;
288 for (i = (reg >> 2); i < (reg >> 2) + count; i++)
289 if (r300_reg_flags[i] != MARK_SAFE)
290 return 1;
291 return 0;
292 }
293
r300_emit_carefully_checked_packet0(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,drm_r300_cmd_header_t header)294 static __inline__ int r300_emit_carefully_checked_packet0(drm_radeon_private_t *
295 dev_priv,
296 drm_radeon_kcmd_buffer_t
297 * cmdbuf,
298 drm_r300_cmd_header_t
299 header)
300 {
301 int reg;
302 int sz;
303 int i;
304 u32 *value;
305 RING_LOCALS;
306
307 sz = header.packet0.count;
308 reg = (header.packet0.reghi << 8) | header.packet0.reglo;
309
310 if ((sz > 64) || (sz < 0)) {
311 DRM_ERROR("Cannot emit more than 64 values at a time (reg=%04x sz=%d)\n",
312 reg, sz);
313 return -EINVAL;
314 }
315
316 for (i = 0; i < sz; i++) {
317 switch (r300_reg_flags[(reg >> 2) + i]) {
318 case MARK_SAFE:
319 break;
320 case MARK_CHECK_OFFSET:
321 value = drm_buffer_pointer_to_dword(cmdbuf->buffer, i);
322 if (!radeon_check_offset(dev_priv, *value)) {
323 DRM_ERROR("Offset failed range check (reg=%04x sz=%d)\n",
324 reg, sz);
325 return -EINVAL;
326 }
327 break;
328 default:
329 DRM_ERROR("Register %04x failed check as flag=%02x\n",
330 reg + i * 4, r300_reg_flags[(reg >> 2) + i]);
331 return -EINVAL;
332 }
333 }
334
335 BEGIN_RING(1 + sz);
336 OUT_RING(CP_PACKET0(reg, sz - 1));
337 OUT_RING_DRM_BUFFER(cmdbuf->buffer, sz);
338 ADVANCE_RING();
339
340 return 0;
341 }
342
343 /**
344 * Emits a packet0 setting arbitrary registers.
345 * Called by r300_do_cp_cmdbuf.
346 *
347 * Note that checks are performed on contents and addresses of the registers
348 */
r300_emit_packet0(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,drm_r300_cmd_header_t header)349 static __inline__ int r300_emit_packet0(drm_radeon_private_t *dev_priv,
350 drm_radeon_kcmd_buffer_t *cmdbuf,
351 drm_r300_cmd_header_t header)
352 {
353 int reg;
354 int sz;
355 RING_LOCALS;
356
357 sz = header.packet0.count;
358 reg = (header.packet0.reghi << 8) | header.packet0.reglo;
359
360 if (!sz)
361 return 0;
362
363 if (sz * 4 > drm_buffer_unprocessed(cmdbuf->buffer))
364 return -EINVAL;
365
366 if (reg + sz * 4 >= 0x10000) {
367 DRM_ERROR("No such registers in hardware reg=%04x sz=%d\n", reg,
368 sz);
369 return -EINVAL;
370 }
371
372 if (r300_check_range(reg, sz)) {
373 /* go and check everything */
374 return r300_emit_carefully_checked_packet0(dev_priv, cmdbuf,
375 header);
376 }
377 /* the rest of the data is safe to emit, whatever the values the user passed */
378
379 BEGIN_RING(1 + sz);
380 OUT_RING(CP_PACKET0(reg, sz - 1));
381 OUT_RING_DRM_BUFFER(cmdbuf->buffer, sz);
382 ADVANCE_RING();
383
384 return 0;
385 }
386
387 /**
388 * Uploads user-supplied vertex program instructions or parameters onto
389 * the graphics card.
390 * Called by r300_do_cp_cmdbuf.
391 */
r300_emit_vpu(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,drm_r300_cmd_header_t header)392 static __inline__ int r300_emit_vpu(drm_radeon_private_t *dev_priv,
393 drm_radeon_kcmd_buffer_t *cmdbuf,
394 drm_r300_cmd_header_t header)
395 {
396 int sz;
397 int addr;
398 RING_LOCALS;
399
400 sz = header.vpu.count;
401 addr = (header.vpu.adrhi << 8) | header.vpu.adrlo;
402
403 if (!sz)
404 return 0;
405 if (sz * 16 > drm_buffer_unprocessed(cmdbuf->buffer))
406 return -EINVAL;
407
408 /* VAP is very sensitive so we purge cache before we program it
409 * and we also flush its state before & after */
410 BEGIN_RING(6);
411 OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
412 OUT_RING(R300_RB3D_DC_FLUSH);
413 OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
414 OUT_RING(RADEON_WAIT_3D_IDLECLEAN);
415 OUT_RING(CP_PACKET0(R300_VAP_PVS_STATE_FLUSH_REG, 0));
416 OUT_RING(0);
417 ADVANCE_RING();
418 /* set flush flag */
419 dev_priv->track_flush |= RADEON_FLUSH_EMITED;
420
421 BEGIN_RING(3 + sz * 4);
422 OUT_RING_REG(R300_VAP_PVS_UPLOAD_ADDRESS, addr);
423 OUT_RING(CP_PACKET0_TABLE(R300_VAP_PVS_UPLOAD_DATA, sz * 4 - 1));
424 OUT_RING_DRM_BUFFER(cmdbuf->buffer, sz * 4);
425 ADVANCE_RING();
426
427 BEGIN_RING(2);
428 OUT_RING(CP_PACKET0(R300_VAP_PVS_STATE_FLUSH_REG, 0));
429 OUT_RING(0);
430 ADVANCE_RING();
431
432 return 0;
433 }
434
435 /**
436 * Emit a clear packet from userspace.
437 * Called by r300_emit_packet3.
438 */
r300_emit_clear(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf)439 static __inline__ int r300_emit_clear(drm_radeon_private_t *dev_priv,
440 drm_radeon_kcmd_buffer_t *cmdbuf)
441 {
442 RING_LOCALS;
443
444 if (8 * 4 > drm_buffer_unprocessed(cmdbuf->buffer))
445 return -EINVAL;
446
447 BEGIN_RING(10);
448 OUT_RING(CP_PACKET3(R200_3D_DRAW_IMMD_2, 8));
449 OUT_RING(R300_PRIM_TYPE_POINT | R300_PRIM_WALK_RING |
450 (1 << R300_PRIM_NUM_VERTICES_SHIFT));
451 OUT_RING_DRM_BUFFER(cmdbuf->buffer, 8);
452 ADVANCE_RING();
453
454 BEGIN_RING(4);
455 OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
456 OUT_RING(R300_RB3D_DC_FLUSH);
457 OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
458 OUT_RING(RADEON_WAIT_3D_IDLECLEAN);
459 ADVANCE_RING();
460 /* set flush flag */
461 dev_priv->track_flush |= RADEON_FLUSH_EMITED;
462
463 return 0;
464 }
465
r300_emit_3d_load_vbpntr(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,u32 header)466 static __inline__ int r300_emit_3d_load_vbpntr(drm_radeon_private_t *dev_priv,
467 drm_radeon_kcmd_buffer_t *cmdbuf,
468 u32 header)
469 {
470 int count, i, k;
471 #define MAX_ARRAY_PACKET 64
472 u32 *data;
473 u32 narrays;
474 RING_LOCALS;
475
476 count = (header & RADEON_CP_PACKET_COUNT_MASK) >> 16;
477
478 if ((count + 1) > MAX_ARRAY_PACKET) {
479 DRM_ERROR("Too large payload in 3D_LOAD_VBPNTR (count=%d)\n",
480 count);
481 return -EINVAL;
482 }
483 /* carefully check packet contents */
484
485 /* We have already read the header so advance the buffer. */
486 drm_buffer_advance(cmdbuf->buffer, 4);
487
488 narrays = *(u32 *)drm_buffer_pointer_to_dword(cmdbuf->buffer, 0);
489 k = 0;
490 i = 1;
491 while ((k < narrays) && (i < (count + 1))) {
492 i++; /* skip attribute field */
493 data = drm_buffer_pointer_to_dword(cmdbuf->buffer, i);
494 if (!radeon_check_offset(dev_priv, *data)) {
495 DRM_ERROR
496 ("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n",
497 k, i);
498 return -EINVAL;
499 }
500 k++;
501 i++;
502 if (k == narrays)
503 break;
504 /* have one more to process, they come in pairs */
505 data = drm_buffer_pointer_to_dword(cmdbuf->buffer, i);
506 if (!radeon_check_offset(dev_priv, *data)) {
507 DRM_ERROR
508 ("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n",
509 k, i);
510 return -EINVAL;
511 }
512 k++;
513 i++;
514 }
515 /* do the counts match what we expect ? */
516 if ((k != narrays) || (i != (count + 1))) {
517 DRM_ERROR
518 ("Malformed 3D_LOAD_VBPNTR packet (k=%d i=%d narrays=%d count+1=%d).\n",
519 k, i, narrays, count + 1);
520 return -EINVAL;
521 }
522
523 /* all clear, output packet */
524
525 BEGIN_RING(count + 2);
526 OUT_RING(header);
527 OUT_RING_DRM_BUFFER(cmdbuf->buffer, count + 1);
528 ADVANCE_RING();
529
530 return 0;
531 }
532
r300_emit_bitblt_multi(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf)533 static __inline__ int r300_emit_bitblt_multi(drm_radeon_private_t *dev_priv,
534 drm_radeon_kcmd_buffer_t *cmdbuf)
535 {
536 u32 *cmd = drm_buffer_pointer_to_dword(cmdbuf->buffer, 0);
537 int count, ret;
538 RING_LOCALS;
539
540
541 count = (*cmd & RADEON_CP_PACKET_COUNT_MASK) >> 16;
542
543 if (*cmd & 0x8000) {
544 u32 offset;
545 u32 *cmd1 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 1);
546 if (*cmd1 & (RADEON_GMC_SRC_PITCH_OFFSET_CNTL
547 | RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
548
549 u32 *cmd2 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 2);
550 offset = *cmd2 << 10;
551 ret = !radeon_check_offset(dev_priv, offset);
552 if (ret) {
553 DRM_ERROR("Invalid bitblt first offset is %08X\n", offset);
554 return -EINVAL;
555 }
556 }
557
558 if ((*cmd1 & RADEON_GMC_SRC_PITCH_OFFSET_CNTL) &&
559 (*cmd1 & RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
560 u32 *cmd3 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 3);
561 offset = *cmd3 << 10;
562 ret = !radeon_check_offset(dev_priv, offset);
563 if (ret) {
564 DRM_ERROR("Invalid bitblt second offset is %08X\n", offset);
565 return -EINVAL;
566 }
567
568 }
569 }
570
571 BEGIN_RING(count+2);
572 OUT_RING_DRM_BUFFER(cmdbuf->buffer, count + 2);
573 ADVANCE_RING();
574
575 return 0;
576 }
577
r300_emit_draw_indx_2(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf)578 static __inline__ int r300_emit_draw_indx_2(drm_radeon_private_t *dev_priv,
579 drm_radeon_kcmd_buffer_t *cmdbuf)
580 {
581 u32 *cmd = drm_buffer_pointer_to_dword(cmdbuf->buffer, 0);
582 u32 *cmd1 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 1);
583 int count;
584 int expected_count;
585 RING_LOCALS;
586
587 count = (*cmd & RADEON_CP_PACKET_COUNT_MASK) >> 16;
588
589 expected_count = *cmd1 >> 16;
590 if (!(*cmd1 & R300_VAP_VF_CNTL__INDEX_SIZE_32bit))
591 expected_count = (expected_count+1)/2;
592
593 if (count && count != expected_count) {
594 DRM_ERROR("3D_DRAW_INDX_2: packet size %i, expected %i\n",
595 count, expected_count);
596 return -EINVAL;
597 }
598
599 BEGIN_RING(count+2);
600 OUT_RING_DRM_BUFFER(cmdbuf->buffer, count + 2);
601 ADVANCE_RING();
602
603 if (!count) {
604 drm_r300_cmd_header_t stack_header, *header;
605 u32 *cmd1, *cmd2, *cmd3;
606
607 if (drm_buffer_unprocessed(cmdbuf->buffer)
608 < 4*4 + sizeof(stack_header)) {
609 DRM_ERROR("3D_DRAW_INDX_2: expect subsequent INDX_BUFFER, but stream is too short.\n");
610 return -EINVAL;
611 }
612
613 header = drm_buffer_read_object(cmdbuf->buffer,
614 sizeof(stack_header), &stack_header);
615
616 cmd = drm_buffer_pointer_to_dword(cmdbuf->buffer, 0);
617 cmd1 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 1);
618 cmd2 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 2);
619 cmd3 = drm_buffer_pointer_to_dword(cmdbuf->buffer, 3);
620
621 if (header->header.cmd_type != R300_CMD_PACKET3 ||
622 header->packet3.packet != R300_CMD_PACKET3_RAW ||
623 *cmd != CP_PACKET3(RADEON_CP_INDX_BUFFER, 2)) {
624 DRM_ERROR("3D_DRAW_INDX_2: expect subsequent INDX_BUFFER.\n");
625 return -EINVAL;
626 }
627
628 if ((*cmd1 & 0x8000ffff) != 0x80000810) {
629 DRM_ERROR("Invalid indx_buffer reg address %08X\n",
630 *cmd1);
631 return -EINVAL;
632 }
633 if (!radeon_check_offset(dev_priv, *cmd2)) {
634 DRM_ERROR("Invalid indx_buffer offset is %08X\n",
635 *cmd2);
636 return -EINVAL;
637 }
638 if (*cmd3 != expected_count) {
639 DRM_ERROR("INDX_BUFFER: buffer size %i, expected %i\n",
640 *cmd3, expected_count);
641 return -EINVAL;
642 }
643
644 BEGIN_RING(4);
645 OUT_RING_DRM_BUFFER(cmdbuf->buffer, 4);
646 ADVANCE_RING();
647 }
648
649 return 0;
650 }
651
r300_emit_raw_packet3(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf)652 static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t *dev_priv,
653 drm_radeon_kcmd_buffer_t *cmdbuf)
654 {
655 u32 *header;
656 int count;
657 RING_LOCALS;
658
659 if (4 > drm_buffer_unprocessed(cmdbuf->buffer))
660 return -EINVAL;
661
662 /* Fixme !! This simply emits a packet without much checking.
663 We need to be smarter. */
664
665 /* obtain first word - actual packet3 header */
666 header = drm_buffer_pointer_to_dword(cmdbuf->buffer, 0);
667
668 /* Is it packet 3 ? */
669 if ((*header >> 30) != 0x3) {
670 DRM_ERROR("Not a packet3 header (0x%08x)\n", *header);
671 return -EINVAL;
672 }
673
674 count = (*header >> 16) & 0x3fff;
675
676 /* Check again now that we know how much data to expect */
677 if ((count + 2) * 4 > drm_buffer_unprocessed(cmdbuf->buffer)) {
678 DRM_ERROR
679 ("Expected packet3 of length %d but have only %d bytes left\n",
680 (count + 2) * 4, drm_buffer_unprocessed(cmdbuf->buffer));
681 return -EINVAL;
682 }
683
684 /* Is it a packet type we know about ? */
685 switch (*header & 0xff00) {
686 case RADEON_3D_LOAD_VBPNTR: /* load vertex array pointers */
687 return r300_emit_3d_load_vbpntr(dev_priv, cmdbuf, *header);
688
689 case RADEON_CNTL_BITBLT_MULTI:
690 return r300_emit_bitblt_multi(dev_priv, cmdbuf);
691
692 case RADEON_CP_INDX_BUFFER:
693 DRM_ERROR("packet3 INDX_BUFFER without preceding 3D_DRAW_INDX_2 is illegal.\n");
694 return -EINVAL;
695 case RADEON_CP_3D_DRAW_IMMD_2:
696 /* triggers drawing using in-packet vertex data */
697 case RADEON_CP_3D_DRAW_VBUF_2:
698 /* triggers drawing of vertex buffers setup elsewhere */
699 dev_priv->track_flush &= ~(RADEON_FLUSH_EMITED |
700 RADEON_PURGE_EMITED);
701 break;
702 case RADEON_CP_3D_DRAW_INDX_2:
703 /* triggers drawing using indices to vertex buffer */
704 /* whenever we send vertex we clear flush & purge */
705 dev_priv->track_flush &= ~(RADEON_FLUSH_EMITED |
706 RADEON_PURGE_EMITED);
707 return r300_emit_draw_indx_2(dev_priv, cmdbuf);
708 case RADEON_WAIT_FOR_IDLE:
709 case RADEON_CP_NOP:
710 /* these packets are safe */
711 break;
712 default:
713 DRM_ERROR("Unknown packet3 header (0x%08x)\n", *header);
714 return -EINVAL;
715 }
716
717 BEGIN_RING(count + 2);
718 OUT_RING_DRM_BUFFER(cmdbuf->buffer, count + 2);
719 ADVANCE_RING();
720
721 return 0;
722 }
723
724 /**
725 * Emit a rendering packet3 from userspace.
726 * Called by r300_do_cp_cmdbuf.
727 */
r300_emit_packet3(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,drm_r300_cmd_header_t header)728 static __inline__ int r300_emit_packet3(drm_radeon_private_t *dev_priv,
729 drm_radeon_kcmd_buffer_t *cmdbuf,
730 drm_r300_cmd_header_t header)
731 {
732 int n;
733 int ret;
734 int orig_iter = cmdbuf->buffer->iterator;
735
736 /* This is a do-while-loop so that we run the interior at least once,
737 * even if cmdbuf->nbox is 0. Compare r300_emit_cliprects for rationale.
738 */
739 n = 0;
740 do {
741 if (cmdbuf->nbox > R300_SIMULTANEOUS_CLIPRECTS) {
742 ret = r300_emit_cliprects(dev_priv, cmdbuf, n);
743 if (ret)
744 return ret;
745
746 cmdbuf->buffer->iterator = orig_iter;
747 }
748
749 switch (header.packet3.packet) {
750 case R300_CMD_PACKET3_CLEAR:
751 DRM_DEBUG("R300_CMD_PACKET3_CLEAR\n");
752 ret = r300_emit_clear(dev_priv, cmdbuf);
753 if (ret) {
754 DRM_ERROR("r300_emit_clear failed\n");
755 return ret;
756 }
757 break;
758
759 case R300_CMD_PACKET3_RAW:
760 DRM_DEBUG("R300_CMD_PACKET3_RAW\n");
761 ret = r300_emit_raw_packet3(dev_priv, cmdbuf);
762 if (ret) {
763 DRM_ERROR("r300_emit_raw_packet3 failed\n");
764 return ret;
765 }
766 break;
767
768 default:
769 DRM_ERROR("bad packet3 type %i at byte %d\n",
770 header.packet3.packet,
771 cmdbuf->buffer->iterator - (int)sizeof(header));
772 return -EINVAL;
773 }
774
775 n += R300_SIMULTANEOUS_CLIPRECTS;
776 } while (n < cmdbuf->nbox);
777
778 return 0;
779 }
780
781 /* Some of the R300 chips seem to be extremely touchy about the two registers
782 * that are configured in r300_pacify.
783 * Among the worst offenders seems to be the R300 ND (0x4E44): When userspace
784 * sends a command buffer that contains only state setting commands and a
785 * vertex program/parameter upload sequence, this will eventually lead to a
786 * lockup, unless the sequence is bracketed by calls to r300_pacify.
787 * So we should take great care to *always* call r300_pacify before
788 * *anything* 3D related, and again afterwards. This is what the
789 * call bracket in r300_do_cp_cmdbuf is for.
790 */
791
792 /**
793 * Emit the sequence to pacify R300.
794 */
r300_pacify(drm_radeon_private_t * dev_priv)795 static void r300_pacify(drm_radeon_private_t *dev_priv)
796 {
797 uint32_t cache_z, cache_3d, cache_2d;
798 RING_LOCALS;
799
800 cache_z = R300_ZC_FLUSH;
801 cache_2d = R300_RB2D_DC_FLUSH;
802 cache_3d = R300_RB3D_DC_FLUSH;
803 if (!(dev_priv->track_flush & RADEON_PURGE_EMITED)) {
804 /* we can purge, primitive where draw since last purge */
805 cache_z |= R300_ZC_FREE;
806 cache_2d |= R300_RB2D_DC_FREE;
807 cache_3d |= R300_RB3D_DC_FREE;
808 }
809
810 /* flush & purge zbuffer */
811 BEGIN_RING(2);
812 OUT_RING(CP_PACKET0(R300_ZB_ZCACHE_CTLSTAT, 0));
813 OUT_RING(cache_z);
814 ADVANCE_RING();
815 /* flush & purge 3d */
816 BEGIN_RING(2);
817 OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
818 OUT_RING(cache_3d);
819 ADVANCE_RING();
820 /* flush & purge texture */
821 BEGIN_RING(2);
822 OUT_RING(CP_PACKET0(R300_TX_INVALTAGS, 0));
823 OUT_RING(0);
824 ADVANCE_RING();
825 /* FIXME: is this one really needed ? */
826 BEGIN_RING(2);
827 OUT_RING(CP_PACKET0(R300_RB3D_AARESOLVE_CTL, 0));
828 OUT_RING(0);
829 ADVANCE_RING();
830 BEGIN_RING(2);
831 OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
832 OUT_RING(RADEON_WAIT_3D_IDLECLEAN);
833 ADVANCE_RING();
834 /* flush & purge 2d through E2 as RB2D will trigger lockup */
835 BEGIN_RING(4);
836 OUT_RING(CP_PACKET0(R300_DSTCACHE_CTLSTAT, 0));
837 OUT_RING(cache_2d);
838 OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
839 OUT_RING(RADEON_WAIT_2D_IDLECLEAN |
840 RADEON_WAIT_HOST_IDLECLEAN);
841 ADVANCE_RING();
842 /* set flush & purge flags */
843 dev_priv->track_flush |= RADEON_FLUSH_EMITED | RADEON_PURGE_EMITED;
844 }
845
846 /**
847 * Called by r300_do_cp_cmdbuf to update the internal buffer age and state.
848 * The actual age emit is done by r300_do_cp_cmdbuf, which is why you must
849 * be careful about how this function is called.
850 */
r300_discard_buffer(struct drm_device * dev,struct drm_master * master,struct drm_buf * buf)851 static void r300_discard_buffer(struct drm_device *dev, struct drm_master *master, struct drm_buf *buf)
852 {
853 drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
854 struct drm_radeon_master_private *master_priv = master->driver_priv;
855
856 buf_priv->age = ++master_priv->sarea_priv->last_dispatch;
857 buf->pending = 1;
858 buf->used = 0;
859 }
860
r300_cmd_wait(drm_radeon_private_t * dev_priv,drm_r300_cmd_header_t header)861 static void r300_cmd_wait(drm_radeon_private_t * dev_priv,
862 drm_r300_cmd_header_t header)
863 {
864 u32 wait_until;
865 RING_LOCALS;
866
867 if (!header.wait.flags)
868 return;
869
870 wait_until = 0;
871
872 switch(header.wait.flags) {
873 case R300_WAIT_2D:
874 wait_until = RADEON_WAIT_2D_IDLE;
875 break;
876 case R300_WAIT_3D:
877 wait_until = RADEON_WAIT_3D_IDLE;
878 break;
879 case R300_NEW_WAIT_2D_3D:
880 wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_3D_IDLE;
881 break;
882 case R300_NEW_WAIT_2D_2D_CLEAN:
883 wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN;
884 break;
885 case R300_NEW_WAIT_3D_3D_CLEAN:
886 wait_until = RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN;
887 break;
888 case R300_NEW_WAIT_2D_2D_CLEAN_3D_3D_CLEAN:
889 wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN;
890 wait_until |= RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN;
891 break;
892 default:
893 return;
894 }
895
896 BEGIN_RING(2);
897 OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
898 OUT_RING(wait_until);
899 ADVANCE_RING();
900 }
901
r300_scratch(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,drm_r300_cmd_header_t header)902 static int r300_scratch(drm_radeon_private_t *dev_priv,
903 drm_radeon_kcmd_buffer_t *cmdbuf,
904 drm_r300_cmd_header_t header)
905 {
906 u32 *ref_age_base;
907 u32 i, *buf_idx, h_pending;
908 u64 *ptr_addr;
909 u64 stack_ptr_addr;
910 RING_LOCALS;
911
912 if (drm_buffer_unprocessed(cmdbuf->buffer) <
913 (sizeof(u64) + header.scratch.n_bufs * sizeof(*buf_idx))) {
914 return -EINVAL;
915 }
916
917 if (header.scratch.reg >= 5) {
918 return -EINVAL;
919 }
920
921 dev_priv->scratch_ages[header.scratch.reg]++;
922
923 ptr_addr = drm_buffer_read_object(cmdbuf->buffer,
924 sizeof(stack_ptr_addr), &stack_ptr_addr);
925 ref_age_base = (u32 *)(unsigned long)get_unaligned(ptr_addr);
926
927 for (i=0; i < header.scratch.n_bufs; i++) {
928 buf_idx = drm_buffer_pointer_to_dword(cmdbuf->buffer, 0);
929 *buf_idx *= 2; /* 8 bytes per buf */
930
931 if (copy_to_user(ref_age_base + *buf_idx,
932 &dev_priv->scratch_ages[header.scratch.reg],
933 sizeof(u32)))
934 return -EINVAL;
935
936 if (copy_from_user(&h_pending,
937 ref_age_base + *buf_idx + 1,
938 sizeof(u32)))
939 return -EINVAL;
940
941 if (h_pending == 0)
942 return -EINVAL;
943
944 h_pending--;
945
946 if (copy_to_user(ref_age_base + *buf_idx + 1,
947 &h_pending,
948 sizeof(u32)))
949 return -EINVAL;
950
951 drm_buffer_advance(cmdbuf->buffer, sizeof(*buf_idx));
952 }
953
954 BEGIN_RING(2);
955 OUT_RING( CP_PACKET0( RADEON_SCRATCH_REG0 + header.scratch.reg * 4, 0 ) );
956 OUT_RING( dev_priv->scratch_ages[header.scratch.reg] );
957 ADVANCE_RING();
958
959 return 0;
960 }
961
962 /**
963 * Uploads user-supplied vertex program instructions or parameters onto
964 * the graphics card.
965 * Called by r300_do_cp_cmdbuf.
966 */
r300_emit_r500fp(drm_radeon_private_t * dev_priv,drm_radeon_kcmd_buffer_t * cmdbuf,drm_r300_cmd_header_t header)967 static inline int r300_emit_r500fp(drm_radeon_private_t *dev_priv,
968 drm_radeon_kcmd_buffer_t *cmdbuf,
969 drm_r300_cmd_header_t header)
970 {
971 int sz;
972 int addr;
973 int type;
974 int isclamp;
975 int stride;
976 RING_LOCALS;
977
978 sz = header.r500fp.count;
979 /* address is 9 bits 0 - 8, bit 1 of flags is part of address */
980 addr = ((header.r500fp.adrhi_flags & 1) << 8) | header.r500fp.adrlo;
981
982 type = !!(header.r500fp.adrhi_flags & R500FP_CONSTANT_TYPE);
983 isclamp = !!(header.r500fp.adrhi_flags & R500FP_CONSTANT_CLAMP);
984
985 addr |= (type << 16);
986 addr |= (isclamp << 17);
987
988 stride = type ? 4 : 6;
989
990 DRM_DEBUG("r500fp %d %d type: %d\n", sz, addr, type);
991 if (!sz)
992 return 0;
993 if (sz * stride * 4 > drm_buffer_unprocessed(cmdbuf->buffer))
994 return -EINVAL;
995
996 BEGIN_RING(3 + sz * stride);
997 OUT_RING_REG(R500_GA_US_VECTOR_INDEX, addr);
998 OUT_RING(CP_PACKET0_TABLE(R500_GA_US_VECTOR_DATA, sz * stride - 1));
999 OUT_RING_DRM_BUFFER(cmdbuf->buffer, sz * stride);
1000
1001 ADVANCE_RING();
1002
1003 return 0;
1004 }
1005
1006
1007 /**
1008 * Parses and validates a user-supplied command buffer and emits appropriate
1009 * commands on the DMA ring buffer.
1010 * Called by the ioctl handler function radeon_cp_cmdbuf.
1011 */
r300_do_cp_cmdbuf(struct drm_device * dev,struct drm_file * file_priv,drm_radeon_kcmd_buffer_t * cmdbuf)1012 int r300_do_cp_cmdbuf(struct drm_device *dev,
1013 struct drm_file *file_priv,
1014 drm_radeon_kcmd_buffer_t *cmdbuf)
1015 {
1016 drm_radeon_private_t *dev_priv = dev->dev_private;
1017 struct drm_radeon_master_private *master_priv = file_priv->master->driver_priv;
1018 struct drm_device_dma *dma = dev->dma;
1019 struct drm_buf *buf = NULL;
1020 int emit_dispatch_age = 0;
1021 int ret = 0;
1022
1023 DRM_DEBUG("\n");
1024
1025 /* pacify */
1026 r300_pacify(dev_priv);
1027
1028 if (cmdbuf->nbox <= R300_SIMULTANEOUS_CLIPRECTS) {
1029 ret = r300_emit_cliprects(dev_priv, cmdbuf, 0);
1030 if (ret)
1031 goto cleanup;
1032 }
1033
1034 while (drm_buffer_unprocessed(cmdbuf->buffer)
1035 >= sizeof(drm_r300_cmd_header_t)) {
1036 int idx;
1037 drm_r300_cmd_header_t *header, stack_header;
1038
1039 header = drm_buffer_read_object(cmdbuf->buffer,
1040 sizeof(stack_header), &stack_header);
1041
1042 switch (header->header.cmd_type) {
1043 case R300_CMD_PACKET0:
1044 DRM_DEBUG("R300_CMD_PACKET0\n");
1045 ret = r300_emit_packet0(dev_priv, cmdbuf, *header);
1046 if (ret) {
1047 DRM_ERROR("r300_emit_packet0 failed\n");
1048 goto cleanup;
1049 }
1050 break;
1051
1052 case R300_CMD_VPU:
1053 DRM_DEBUG("R300_CMD_VPU\n");
1054 ret = r300_emit_vpu(dev_priv, cmdbuf, *header);
1055 if (ret) {
1056 DRM_ERROR("r300_emit_vpu failed\n");
1057 goto cleanup;
1058 }
1059 break;
1060
1061 case R300_CMD_PACKET3:
1062 DRM_DEBUG("R300_CMD_PACKET3\n");
1063 ret = r300_emit_packet3(dev_priv, cmdbuf, *header);
1064 if (ret) {
1065 DRM_ERROR("r300_emit_packet3 failed\n");
1066 goto cleanup;
1067 }
1068 break;
1069
1070 case R300_CMD_END3D:
1071 DRM_DEBUG("R300_CMD_END3D\n");
1072 /* TODO:
1073 Ideally userspace driver should not need to issue this call,
1074 i.e. the drm driver should issue it automatically and prevent
1075 lockups.
1076
1077 In practice, we do not understand why this call is needed and what
1078 it does (except for some vague guesses that it has to do with cache
1079 coherence) and so the user space driver does it.
1080
1081 Once we are sure which uses prevent lockups the code could be moved
1082 into the kernel and the userspace driver will not
1083 need to use this command.
1084
1085 Note that issuing this command does not hurt anything
1086 except, possibly, performance */
1087 r300_pacify(dev_priv);
1088 break;
1089
1090 case R300_CMD_CP_DELAY:
1091 /* simple enough, we can do it here */
1092 DRM_DEBUG("R300_CMD_CP_DELAY\n");
1093 {
1094 int i;
1095 RING_LOCALS;
1096
1097 BEGIN_RING(header->delay.count);
1098 for (i = 0; i < header->delay.count; i++)
1099 OUT_RING(RADEON_CP_PACKET2);
1100 ADVANCE_RING();
1101 }
1102 break;
1103
1104 case R300_CMD_DMA_DISCARD:
1105 DRM_DEBUG("RADEON_CMD_DMA_DISCARD\n");
1106 idx = header->dma.buf_idx;
1107 if (idx < 0 || idx >= dma->buf_count) {
1108 DRM_ERROR("buffer index %d (of %d max)\n",
1109 idx, dma->buf_count - 1);
1110 ret = -EINVAL;
1111 goto cleanup;
1112 }
1113
1114 buf = dma->buflist[idx];
1115 if (buf->file_priv != file_priv || buf->pending) {
1116 DRM_ERROR("bad buffer %p %p %d\n",
1117 buf->file_priv, file_priv,
1118 buf->pending);
1119 ret = -EINVAL;
1120 goto cleanup;
1121 }
1122
1123 emit_dispatch_age = 1;
1124 r300_discard_buffer(dev, file_priv->master, buf);
1125 break;
1126
1127 case R300_CMD_WAIT:
1128 DRM_DEBUG("R300_CMD_WAIT\n");
1129 r300_cmd_wait(dev_priv, *header);
1130 break;
1131
1132 case R300_CMD_SCRATCH:
1133 DRM_DEBUG("R300_CMD_SCRATCH\n");
1134 ret = r300_scratch(dev_priv, cmdbuf, *header);
1135 if (ret) {
1136 DRM_ERROR("r300_scratch failed\n");
1137 goto cleanup;
1138 }
1139 break;
1140
1141 case R300_CMD_R500FP:
1142 if ((dev_priv->flags & RADEON_FAMILY_MASK) < CHIP_RV515) {
1143 DRM_ERROR("Calling r500 command on r300 card\n");
1144 ret = -EINVAL;
1145 goto cleanup;
1146 }
1147 DRM_DEBUG("R300_CMD_R500FP\n");
1148 ret = r300_emit_r500fp(dev_priv, cmdbuf, *header);
1149 if (ret) {
1150 DRM_ERROR("r300_emit_r500fp failed\n");
1151 goto cleanup;
1152 }
1153 break;
1154 default:
1155 DRM_ERROR("bad cmd_type %i at byte %d\n",
1156 header->header.cmd_type,
1157 cmdbuf->buffer->iterator - (int)sizeof(*header));
1158 ret = -EINVAL;
1159 goto cleanup;
1160 }
1161 }
1162
1163 DRM_DEBUG("END\n");
1164
1165 cleanup:
1166 r300_pacify(dev_priv);
1167
1168 /* We emit the vertex buffer age here, outside the pacifier "brackets"
1169 * for two reasons:
1170 * (1) This may coalesce multiple age emissions into a single one and
1171 * (2) more importantly, some chips lock up hard when scratch registers
1172 * are written inside the pacifier bracket.
1173 */
1174 if (emit_dispatch_age) {
1175 RING_LOCALS;
1176
1177 /* Emit the vertex buffer age */
1178 BEGIN_RING(2);
1179 RADEON_DISPATCH_AGE(master_priv->sarea_priv->last_dispatch);
1180 ADVANCE_RING();
1181 }
1182
1183 COMMIT_RING();
1184
1185 return ret;
1186 }
1187