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gallium: remove the swizzling parts of ExtSwizzle
[mesa.git] / src / gallium / drivers / nv50 / nv50_program.c
1 /*
2 * Copyright 2008 Ben Skeggs
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 #include "pipe/p_context.h"
24 #include "pipe/p_defines.h"
25 #include "pipe/p_state.h"
26 #include "pipe/p_inlines.h"
27
28 #include "pipe/p_shader_tokens.h"
29 #include "tgsi/tgsi_parse.h"
30 #include "tgsi/tgsi_util.h"
31
32 #include "nv50_context.h"
33
34 #define NV50_SU_MAX_TEMP 64
35 #define NV50_SU_MAX_ADDR 7
36 //#define NV50_PROGRAM_DUMP
37
38 /* ARL - gallium craps itself on progs/vp/arl.txt
39 *
40 * MSB - Like MAD, but MUL+SUB
41 * - Fuck it off, introduce a way to negate args for ops that
42 * support it.
43 *
44 * Look into inlining IMMD for ops other than MOV (make it general?)
45 * - Maybe even relax restrictions a bit, can't do P_RESULT + P_IMMD,
46 * but can emit to P_TEMP first - then MOV later. NVIDIA does this
47 *
48 * In ops such as ADD it's possible to construct a bad opcode in the !is_long()
49 * case, if the emit_src() causes the inst to suddenly become long.
50 *
51 * Verify half-insns work where expected - and force disable them where they
52 * don't work - MUL has it forcibly disabled atm as it fixes POW..
53 *
54 * FUCK! watch dst==src vectors, can overwrite components that are needed.
55 * ie. SUB R0, R0.yzxw, R0
56 *
57 * Things to check with renouveau:
58 * FP attr/result assignment - how?
59 * attrib
60 * - 0x16bc maps vp output onto fp hpos
61 * - 0x16c0 maps vp output onto fp col0
62 * result
63 * - colr always 0-3
64 * - depr always 4
65 * 0x16bc->0x16e8 --> some binding between vp/fp regs
66 * 0x16b8 --> VP output count
67 *
68 * 0x1298 --> "MOV rcol.x, fcol.y" "MOV depr, fcol.y" = 0x00000005
69 * "MOV rcol.x, fcol.y" = 0x00000004
70 * 0x19a8 --> as above but 0x00000100 and 0x00000000
71 * - 0x00100000 used when KIL used
72 * 0x196c --> as above but 0x00000011 and 0x00000000
73 *
74 * 0x1988 --> 0xXXNNNNNN
75 * - XX == FP high something
76 */
77 struct nv50_reg {
78 enum {
79 P_TEMP,
80 P_ATTR,
81 P_RESULT,
82 P_CONST,
83 P_IMMD,
84 P_ADDR
85 } type;
86 int index;
87
88 int hw;
89 int neg;
90
91 int rhw; /* result hw for FP outputs, or interpolant index */
92 int acc; /* instruction where this reg is last read (first insn == 1) */
93 };
94
95 /* arbitrary limits */
96 #define MAX_IF_DEPTH 4
97 #define MAX_LOOP_DEPTH 4
98
99 struct nv50_pc {
100 struct nv50_program *p;
101
102 /* hw resources */
103 struct nv50_reg *r_temp[NV50_SU_MAX_TEMP];
104 struct nv50_reg r_addr[NV50_SU_MAX_ADDR];
105
106 /* tgsi resources */
107 struct nv50_reg *temp;
108 int temp_nr;
109 struct nv50_reg *attr;
110 int attr_nr;
111 struct nv50_reg *result;
112 int result_nr;
113 struct nv50_reg *param;
114 int param_nr;
115 struct nv50_reg *immd;
116 float *immd_buf;
117 int immd_nr;
118 struct nv50_reg **addr;
119 int addr_nr;
120
121 struct nv50_reg *temp_temp[16];
122 unsigned temp_temp_nr;
123
124 /* broadcast and destination replacement regs */
125 struct nv50_reg *r_brdc;
126 struct nv50_reg *r_dst[4];
127
128 unsigned interp_mode[32];
129 /* perspective interpolation registers */
130 struct nv50_reg *iv_p;
131 struct nv50_reg *iv_c;
132
133 struct nv50_program_exec *if_cond;
134 struct nv50_program_exec *if_insn[MAX_IF_DEPTH];
135 struct nv50_program_exec *br_join[MAX_IF_DEPTH];
136 struct nv50_program_exec *br_loop[MAX_LOOP_DEPTH]; /* for BRK branch */
137 int if_lvl, loop_lvl;
138 unsigned loop_pos[MAX_LOOP_DEPTH];
139
140 /* current instruction and total number of insns */
141 unsigned insn_cur;
142 unsigned insn_nr;
143
144 boolean allow32;
145 };
146
147 static INLINE void
148 ctor_reg(struct nv50_reg *reg, unsigned type, int index, int hw)
149 {
150 reg->type = type;
151 reg->index = index;
152 reg->hw = hw;
153 reg->neg = 0;
154 reg->rhw = -1;
155 reg->acc = 0;
156 }
157
158 static INLINE unsigned
159 popcnt4(uint32_t val)
160 {
161 static const unsigned cnt[16]
162 = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
163 return cnt[val & 0xf];
164 }
165
166 static void
167 terminate_mbb(struct nv50_pc *pc)
168 {
169 int i;
170
171 /* remove records of temporary address register values */
172 for (i = 0; i < NV50_SU_MAX_ADDR; ++i)
173 if (pc->r_addr[i].index < 0)
174 pc->r_addr[i].rhw = -1;
175 }
176
177 static void
178 alloc_reg(struct nv50_pc *pc, struct nv50_reg *reg)
179 {
180 int i = 0;
181
182 if (reg->type == P_RESULT) {
183 if (pc->p->cfg.high_result < (reg->hw + 1))
184 pc->p->cfg.high_result = reg->hw + 1;
185 }
186
187 if (reg->type != P_TEMP)
188 return;
189
190 if (reg->hw >= 0) {
191 /*XXX: do this here too to catch FP temp-as-attr usage..
192 * not clean, but works */
193 if (pc->p->cfg.high_temp < (reg->hw + 1))
194 pc->p->cfg.high_temp = reg->hw + 1;
195 return;
196 }
197
198 if (reg->rhw != -1) {
199 /* try to allocate temporary with index rhw first */
200 if (!(pc->r_temp[reg->rhw])) {
201 pc->r_temp[reg->rhw] = reg;
202 reg->hw = reg->rhw;
203 if (pc->p->cfg.high_temp < (reg->rhw + 1))
204 pc->p->cfg.high_temp = reg->rhw + 1;
205 return;
206 }
207 /* make sure we don't get things like $r0 needs to go
208 * in $r1 and $r1 in $r0
209 */
210 i = pc->result_nr * 4;
211 }
212
213 for (; i < NV50_SU_MAX_TEMP; i++) {
214 if (!(pc->r_temp[i])) {
215 pc->r_temp[i] = reg;
216 reg->hw = i;
217 if (pc->p->cfg.high_temp < (i + 1))
218 pc->p->cfg.high_temp = i + 1;
219 return;
220 }
221 }
222
223 assert(0);
224 }
225
226 /* XXX: For shaders that aren't executed linearly (e.g. shaders that
227 * contain loops), we need to assign all hw regs to TGSI TEMPs early,
228 * lest we risk temp_temps overwriting regs alloc'd "later".
229 */
230 static struct nv50_reg *
231 alloc_temp(struct nv50_pc *pc, struct nv50_reg *dst)
232 {
233 struct nv50_reg *r;
234 int i;
235
236 if (dst && dst->type == P_TEMP && dst->hw == -1)
237 return dst;
238
239 for (i = 0; i < NV50_SU_MAX_TEMP; i++) {
240 if (!pc->r_temp[i]) {
241 r = MALLOC_STRUCT(nv50_reg);
242 ctor_reg(r, P_TEMP, -1, i);
243 pc->r_temp[i] = r;
244 return r;
245 }
246 }
247
248 assert(0);
249 return NULL;
250 }
251
252 /* Assign the hw of the discarded temporary register src
253 * to the tgsi register dst and free src.
254 */
255 static void
256 assimilate_temp(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
257 {
258 assert(src->index == -1 && src->hw != -1);
259
260 if (dst->hw != -1)
261 pc->r_temp[dst->hw] = NULL;
262 pc->r_temp[src->hw] = dst;
263 dst->hw = src->hw;
264
265 FREE(src);
266 }
267
268 /* release the hardware resource held by r */
269 static void
270 release_hw(struct nv50_pc *pc, struct nv50_reg *r)
271 {
272 assert(r->type == P_TEMP);
273 if (r->hw == -1)
274 return;
275
276 assert(pc->r_temp[r->hw] == r);
277 pc->r_temp[r->hw] = NULL;
278
279 r->acc = 0;
280 if (r->index == -1)
281 FREE(r);
282 }
283
284 static void
285 free_temp(struct nv50_pc *pc, struct nv50_reg *r)
286 {
287 if (r->index == -1) {
288 unsigned hw = r->hw;
289
290 FREE(pc->r_temp[hw]);
291 pc->r_temp[hw] = NULL;
292 }
293 }
294
295 static int
296 alloc_temp4(struct nv50_pc *pc, struct nv50_reg *dst[4], int idx)
297 {
298 int i;
299
300 if ((idx + 4) >= NV50_SU_MAX_TEMP)
301 return 1;
302
303 if (pc->r_temp[idx] || pc->r_temp[idx + 1] ||
304 pc->r_temp[idx + 2] || pc->r_temp[idx + 3])
305 return alloc_temp4(pc, dst, idx + 4);
306
307 for (i = 0; i < 4; i++) {
308 dst[i] = MALLOC_STRUCT(nv50_reg);
309 ctor_reg(dst[i], P_TEMP, -1, idx + i);
310 pc->r_temp[idx + i] = dst[i];
311 }
312
313 return 0;
314 }
315
316 static void
317 free_temp4(struct nv50_pc *pc, struct nv50_reg *reg[4])
318 {
319 int i;
320
321 for (i = 0; i < 4; i++)
322 free_temp(pc, reg[i]);
323 }
324
325 static struct nv50_reg *
326 temp_temp(struct nv50_pc *pc)
327 {
328 if (pc->temp_temp_nr >= 16)
329 assert(0);
330
331 pc->temp_temp[pc->temp_temp_nr] = alloc_temp(pc, NULL);
332 return pc->temp_temp[pc->temp_temp_nr++];
333 }
334
335 static void
336 kill_temp_temp(struct nv50_pc *pc)
337 {
338 int i;
339
340 for (i = 0; i < pc->temp_temp_nr; i++)
341 free_temp(pc, pc->temp_temp[i]);
342 pc->temp_temp_nr = 0;
343 }
344
345 static int
346 ctor_immd(struct nv50_pc *pc, float x, float y, float z, float w)
347 {
348 pc->immd_buf = REALLOC(pc->immd_buf, (pc->immd_nr * 4 * sizeof(float)),
349 (pc->immd_nr + 1) * 4 * sizeof(float));
350 pc->immd_buf[(pc->immd_nr * 4) + 0] = x;
351 pc->immd_buf[(pc->immd_nr * 4) + 1] = y;
352 pc->immd_buf[(pc->immd_nr * 4) + 2] = z;
353 pc->immd_buf[(pc->immd_nr * 4) + 3] = w;
354
355 return pc->immd_nr++;
356 }
357
358 static struct nv50_reg *
359 alloc_immd(struct nv50_pc *pc, float f)
360 {
361 struct nv50_reg *r = MALLOC_STRUCT(nv50_reg);
362 unsigned hw;
363
364 for (hw = 0; hw < pc->immd_nr * 4; hw++)
365 if (pc->immd_buf[hw] == f)
366 break;
367
368 if (hw == pc->immd_nr * 4)
369 hw = ctor_immd(pc, f, -f, 0.5 * f, 0) * 4;
370
371 ctor_reg(r, P_IMMD, -1, hw);
372 return r;
373 }
374
375 static struct nv50_program_exec *
376 exec(struct nv50_pc *pc)
377 {
378 struct nv50_program_exec *e = CALLOC_STRUCT(nv50_program_exec);
379
380 e->param.index = -1;
381 return e;
382 }
383
384 static void
385 emit(struct nv50_pc *pc, struct nv50_program_exec *e)
386 {
387 struct nv50_program *p = pc->p;
388
389 if (p->exec_tail)
390 p->exec_tail->next = e;
391 if (!p->exec_head)
392 p->exec_head = e;
393 p->exec_tail = e;
394 p->exec_size += (e->inst[0] & 1) ? 2 : 1;
395 }
396
397 static INLINE void set_long(struct nv50_pc *, struct nv50_program_exec *);
398
399 static boolean
400 is_long(struct nv50_program_exec *e)
401 {
402 if (e->inst[0] & 1)
403 return TRUE;
404 return FALSE;
405 }
406
407 static boolean
408 is_immd(struct nv50_program_exec *e)
409 {
410 if (is_long(e) && (e->inst[1] & 3) == 3)
411 return TRUE;
412 return FALSE;
413 }
414
415 static INLINE void
416 set_pred(struct nv50_pc *pc, unsigned pred, unsigned idx,
417 struct nv50_program_exec *e)
418 {
419 set_long(pc, e);
420 e->inst[1] &= ~((0x1f << 7) | (0x3 << 12));
421 e->inst[1] |= (pred << 7) | (idx << 12);
422 }
423
424 static INLINE void
425 set_pred_wr(struct nv50_pc *pc, unsigned on, unsigned idx,
426 struct nv50_program_exec *e)
427 {
428 set_long(pc, e);
429 e->inst[1] &= ~((0x3 << 4) | (1 << 6));
430 e->inst[1] |= (idx << 4) | (on << 6);
431 }
432
433 static INLINE void
434 set_long(struct nv50_pc *pc, struct nv50_program_exec *e)
435 {
436 if (is_long(e))
437 return;
438
439 e->inst[0] |= 1;
440 set_pred(pc, 0xf, 0, e);
441 set_pred_wr(pc, 0, 0, e);
442 }
443
444 static INLINE void
445 set_dst(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_program_exec *e)
446 {
447 if (dst->type == P_RESULT) {
448 set_long(pc, e);
449 e->inst[1] |= 0x00000008;
450 }
451
452 alloc_reg(pc, dst);
453 e->inst[0] |= (dst->hw << 2);
454 }
455
456 static INLINE void
457 set_immd(struct nv50_pc *pc, struct nv50_reg *imm, struct nv50_program_exec *e)
458 {
459 float f = pc->immd_buf[imm->hw];
460 unsigned val = fui(imm->neg ? -f : f);
461
462 set_long(pc, e);
463 /*XXX: can't be predicated - bits overlap.. catch cases where both
464 * are required and avoid them. */
465 set_pred(pc, 0, 0, e);
466 set_pred_wr(pc, 0, 0, e);
467
468 e->inst[1] |= 0x00000002 | 0x00000001;
469 e->inst[0] |= (val & 0x3f) << 16;
470 e->inst[1] |= (val >> 6) << 2;
471 }
472
473 static void
474 emit_set_addr(struct nv50_pc *pc, struct nv50_reg *dst, unsigned val)
475 {
476 struct nv50_program_exec *e = exec(pc);
477
478 assert(val <= 0xffff);
479 e->inst[0] = 0xd0000000 | ((val & 0xffff) << 9);
480 e->inst[1] = 0x20000000;
481 e->inst[0] |= dst->hw << 2;
482 set_long(pc, e);
483
484 emit(pc, e);
485 }
486
487 static struct nv50_reg *
488 alloc_addr(struct nv50_pc *pc, struct nv50_reg *ref)
489 {
490 int i;
491 struct nv50_reg *a = NULL;
492
493 if (!ref) {
494 for (i = 0; i < NV50_SU_MAX_ADDR; ++i) {
495 if (pc->r_addr[i].index >= 0)
496 continue;
497 if (pc->r_addr[i].rhw >= 0 &&
498 pc->r_addr[i].acc == pc->insn_cur)
499 continue;
500
501 pc->r_addr[i].rhw = -1;
502 pc->r_addr[i].index = i;
503 return &pc->r_addr[i];
504 }
505 assert(0);
506 return NULL;
507 }
508
509 for (i = NV50_SU_MAX_ADDR - 1; i >= 0; --i) {
510 if (pc->r_addr[i].index >= 0) /* occupied for TGSI */
511 continue;
512 if (pc->r_addr[i].rhw < 0) { /* unused */
513 a = &pc->r_addr[i];
514 continue;
515 }
516 if (!a && pc->r_addr[i].acc != pc->insn_cur)
517 a = &pc->r_addr[i];
518
519 if (ref->hw - pc->r_addr[i].rhw < 128) {
520 /* alloc'd & suitable */
521 pc->r_addr[i].acc = pc->insn_cur;
522 return &pc->r_addr[i];
523 }
524 }
525 assert(a);
526 emit_set_addr(pc, a, ref->hw * 4);
527
528 a->rhw = ref->hw % 128;
529 a->acc = pc->insn_cur;
530 return a;
531 }
532
533 #define INTERP_LINEAR 0
534 #define INTERP_FLAT 1
535 #define INTERP_PERSPECTIVE 2
536 #define INTERP_CENTROID 4
537
538 /* interpolant index has been stored in dst->rhw */
539 static void
540 emit_interp(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *iv,
541 unsigned mode)
542 {
543 assert(dst->rhw != -1);
544 struct nv50_program_exec *e = exec(pc);
545
546 e->inst[0] |= 0x80000000;
547 set_dst(pc, dst, e);
548 e->inst[0] |= (dst->rhw << 16);
549
550 if (mode & INTERP_FLAT) {
551 e->inst[0] |= (1 << 8);
552 } else {
553 if (mode & INTERP_PERSPECTIVE) {
554 e->inst[0] |= (1 << 25);
555 alloc_reg(pc, iv);
556 e->inst[0] |= (iv->hw << 9);
557 }
558
559 if (mode & INTERP_CENTROID)
560 e->inst[0] |= (1 << 24);
561 }
562
563 emit(pc, e);
564 }
565
566 static INLINE void
567 set_addr(struct nv50_program_exec *e, struct nv50_reg *a)
568 {
569 assert(!(e->inst[0] & 0x0c000000));
570 assert(!(e->inst[1] & 0x00000004));
571
572 e->inst[0] |= (a->hw & 3) << 26;
573 e->inst[1] |= (a->hw >> 2) << 2;
574 }
575
576 static void
577 set_data(struct nv50_pc *pc, struct nv50_reg *src, unsigned m, unsigned s,
578 struct nv50_program_exec *e)
579 {
580 set_long(pc, e);
581
582 e->param.index = src->hw;
583 e->param.shift = s;
584 e->param.mask = m << (s % 32);
585
586 if (src->hw > 127)
587 set_addr(e, alloc_addr(pc, src));
588 else
589 if (src->acc < 0) {
590 assert(src->type == P_CONST);
591 set_addr(e, pc->addr[src->index]);
592 }
593
594 e->inst[1] |= (((src->type == P_IMMD) ? 0 : 1) << 22);
595 }
596
597 static void
598 emit_mov(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
599 {
600 struct nv50_program_exec *e = exec(pc);
601
602 e->inst[0] = 0x10000000;
603 if (!pc->allow32)
604 set_long(pc, e);
605
606 set_dst(pc, dst, e);
607
608 if (!is_long(e) && src->type == P_IMMD) {
609 set_immd(pc, src, e);
610 /*XXX: 32-bit, but steals part of "half" reg space - need to
611 * catch and handle this case if/when we do half-regs
612 */
613 } else
614 if (src->type == P_IMMD || src->type == P_CONST) {
615 set_long(pc, e);
616 set_data(pc, src, 0x7f, 9, e);
617 e->inst[1] |= 0x20000000; /* src0 const? */
618 } else {
619 if (src->type == P_ATTR) {
620 set_long(pc, e);
621 e->inst[1] |= 0x00200000;
622 }
623
624 alloc_reg(pc, src);
625 e->inst[0] |= (src->hw << 9);
626 }
627
628 if (is_long(e) && !is_immd(e)) {
629 e->inst[1] |= 0x04000000; /* 32-bit */
630 e->inst[1] |= 0x0000c000; /* "subsubop" 0x3 */
631 if (!(e->inst[1] & 0x20000000))
632 e->inst[1] |= 0x00030000; /* "subsubop" 0xf */
633 } else
634 e->inst[0] |= 0x00008000;
635
636 emit(pc, e);
637 }
638
639 static INLINE void
640 emit_mov_immdval(struct nv50_pc *pc, struct nv50_reg *dst, float f)
641 {
642 struct nv50_reg *imm = alloc_immd(pc, f);
643 emit_mov(pc, dst, imm);
644 FREE(imm);
645 }
646
647 static boolean
648 check_swap_src_0_1(struct nv50_pc *pc,
649 struct nv50_reg **s0, struct nv50_reg **s1)
650 {
651 struct nv50_reg *src0 = *s0, *src1 = *s1;
652
653 if (src0->type == P_CONST) {
654 if (src1->type != P_CONST) {
655 *s0 = src1;
656 *s1 = src0;
657 return TRUE;
658 }
659 } else
660 if (src1->type == P_ATTR) {
661 if (src0->type != P_ATTR) {
662 *s0 = src1;
663 *s1 = src0;
664 return TRUE;
665 }
666 }
667
668 return FALSE;
669 }
670
671 static void
672 set_src_0_restricted(struct nv50_pc *pc, struct nv50_reg *src,
673 struct nv50_program_exec *e)
674 {
675 struct nv50_reg *temp;
676
677 if (src->type != P_TEMP) {
678 temp = temp_temp(pc);
679 emit_mov(pc, temp, src);
680 src = temp;
681 }
682
683 alloc_reg(pc, src);
684 e->inst[0] |= (src->hw << 9);
685 }
686
687 static void
688 set_src_0(struct nv50_pc *pc, struct nv50_reg *src, struct nv50_program_exec *e)
689 {
690 if (src->type == P_ATTR) {
691 set_long(pc, e);
692 e->inst[1] |= 0x00200000;
693 } else
694 if (src->type == P_CONST || src->type == P_IMMD) {
695 struct nv50_reg *temp = temp_temp(pc);
696
697 emit_mov(pc, temp, src);
698 src = temp;
699 }
700
701 alloc_reg(pc, src);
702 e->inst[0] |= (src->hw << 9);
703 }
704
705 static void
706 set_src_1(struct nv50_pc *pc, struct nv50_reg *src, struct nv50_program_exec *e)
707 {
708 if (src->type == P_ATTR) {
709 struct nv50_reg *temp = temp_temp(pc);
710
711 emit_mov(pc, temp, src);
712 src = temp;
713 } else
714 if (src->type == P_CONST || src->type == P_IMMD) {
715 assert(!(e->inst[0] & 0x00800000));
716 if (e->inst[0] & 0x01000000) {
717 struct nv50_reg *temp = temp_temp(pc);
718
719 emit_mov(pc, temp, src);
720 src = temp;
721 } else {
722 set_data(pc, src, 0x7f, 16, e);
723 e->inst[0] |= 0x00800000;
724 }
725 }
726
727 alloc_reg(pc, src);
728 e->inst[0] |= ((src->hw & 127) << 16);
729 }
730
731 static void
732 set_src_2(struct nv50_pc *pc, struct nv50_reg *src, struct nv50_program_exec *e)
733 {
734 set_long(pc, e);
735
736 if (src->type == P_ATTR) {
737 struct nv50_reg *temp = temp_temp(pc);
738
739 emit_mov(pc, temp, src);
740 src = temp;
741 } else
742 if (src->type == P_CONST || src->type == P_IMMD) {
743 assert(!(e->inst[0] & 0x01000000));
744 if (e->inst[0] & 0x00800000) {
745 struct nv50_reg *temp = temp_temp(pc);
746
747 emit_mov(pc, temp, src);
748 src = temp;
749 } else {
750 set_data(pc, src, 0x7f, 32+14, e);
751 e->inst[0] |= 0x01000000;
752 }
753 }
754
755 alloc_reg(pc, src);
756 e->inst[1] |= ((src->hw & 127) << 14);
757 }
758
759 static void
760 emit_mul(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
761 struct nv50_reg *src1)
762 {
763 struct nv50_program_exec *e = exec(pc);
764
765 e->inst[0] |= 0xc0000000;
766
767 if (!pc->allow32)
768 set_long(pc, e);
769
770 check_swap_src_0_1(pc, &src0, &src1);
771 set_dst(pc, dst, e);
772 set_src_0(pc, src0, e);
773 if (src1->type == P_IMMD && !is_long(e)) {
774 if (src0->neg)
775 e->inst[0] |= 0x00008000;
776 set_immd(pc, src1, e);
777 } else {
778 set_src_1(pc, src1, e);
779 if (src0->neg ^ src1->neg) {
780 if (is_long(e))
781 e->inst[1] |= 0x08000000;
782 else
783 e->inst[0] |= 0x00008000;
784 }
785 }
786
787 emit(pc, e);
788 }
789
790 static void
791 emit_add(struct nv50_pc *pc, struct nv50_reg *dst,
792 struct nv50_reg *src0, struct nv50_reg *src1)
793 {
794 struct nv50_program_exec *e = exec(pc);
795
796 e->inst[0] |= 0xb0000000;
797
798 check_swap_src_0_1(pc, &src0, &src1);
799
800 if (!pc->allow32 || src0->neg || src1->neg) {
801 set_long(pc, e);
802 e->inst[1] |= (src0->neg << 26) | (src1->neg << 27);
803 }
804
805 set_dst(pc, dst, e);
806 set_src_0(pc, src0, e);
807 if (src1->type == P_CONST || src1->type == P_ATTR || is_long(e))
808 set_src_2(pc, src1, e);
809 else
810 if (src1->type == P_IMMD)
811 set_immd(pc, src1, e);
812 else
813 set_src_1(pc, src1, e);
814
815 emit(pc, e);
816 }
817
818 static void
819 emit_arl(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src,
820 uint8_t s)
821 {
822 struct nv50_program_exec *e = exec(pc);
823
824 set_long(pc, e);
825 e->inst[1] |= 0xc0000000;
826
827 e->inst[0] |= dst->hw << 2;
828 e->inst[0] |= s << 16; /* shift left */
829 set_src_0_restricted(pc, src, e);
830
831 emit(pc, e);
832 }
833
834 static void
835 emit_minmax(struct nv50_pc *pc, unsigned sub, struct nv50_reg *dst,
836 struct nv50_reg *src0, struct nv50_reg *src1)
837 {
838 struct nv50_program_exec *e = exec(pc);
839
840 set_long(pc, e);
841 e->inst[0] |= 0xb0000000;
842 e->inst[1] |= (sub << 29);
843
844 check_swap_src_0_1(pc, &src0, &src1);
845 set_dst(pc, dst, e);
846 set_src_0(pc, src0, e);
847 set_src_1(pc, src1, e);
848
849 emit(pc, e);
850 }
851
852 static INLINE void
853 emit_sub(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
854 struct nv50_reg *src1)
855 {
856 src1->neg ^= 1;
857 emit_add(pc, dst, src0, src1);
858 src1->neg ^= 1;
859 }
860
861 static void
862 emit_mad(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
863 struct nv50_reg *src1, struct nv50_reg *src2)
864 {
865 struct nv50_program_exec *e = exec(pc);
866
867 e->inst[0] |= 0xe0000000;
868
869 check_swap_src_0_1(pc, &src0, &src1);
870 set_dst(pc, dst, e);
871 set_src_0(pc, src0, e);
872 set_src_1(pc, src1, e);
873 set_src_2(pc, src2, e);
874
875 if (src0->neg ^ src1->neg)
876 e->inst[1] |= 0x04000000;
877 if (src2->neg)
878 e->inst[1] |= 0x08000000;
879
880 emit(pc, e);
881 }
882
883 static INLINE void
884 emit_msb(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
885 struct nv50_reg *src1, struct nv50_reg *src2)
886 {
887 src2->neg ^= 1;
888 emit_mad(pc, dst, src0, src1, src2);
889 src2->neg ^= 1;
890 }
891
892 static void
893 emit_flop(struct nv50_pc *pc, unsigned sub,
894 struct nv50_reg *dst, struct nv50_reg *src)
895 {
896 struct nv50_program_exec *e = exec(pc);
897
898 e->inst[0] |= 0x90000000;
899 if (sub) {
900 set_long(pc, e);
901 e->inst[1] |= (sub << 29);
902 }
903
904 set_dst(pc, dst, e);
905
906 if (sub == 0 || sub == 2)
907 set_src_0_restricted(pc, src, e);
908 else
909 set_src_0(pc, src, e);
910
911 emit(pc, e);
912 }
913
914 static void
915 emit_preex2(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
916 {
917 struct nv50_program_exec *e = exec(pc);
918
919 e->inst[0] |= 0xb0000000;
920
921 set_dst(pc, dst, e);
922 set_src_0(pc, src, e);
923 set_long(pc, e);
924 e->inst[1] |= (6 << 29) | 0x00004000;
925
926 emit(pc, e);
927 }
928
929 static void
930 emit_precossin(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
931 {
932 struct nv50_program_exec *e = exec(pc);
933
934 e->inst[0] |= 0xb0000000;
935
936 set_dst(pc, dst, e);
937 set_src_0(pc, src, e);
938 set_long(pc, e);
939 e->inst[1] |= (6 << 29);
940
941 emit(pc, e);
942 }
943
944 #define CVTOP_RN 0x01
945 #define CVTOP_FLOOR 0x03
946 #define CVTOP_CEIL 0x05
947 #define CVTOP_TRUNC 0x07
948 #define CVTOP_SAT 0x08
949 #define CVTOP_ABS 0x10
950
951 /* 0x04 == 32 bit dst */
952 /* 0x40 == dst is float */
953 /* 0x80 == src is float */
954 #define CVT_F32_F32 0xc4
955 #define CVT_F32_S32 0x44
956 #define CVT_F32_U32 0x64
957 #define CVT_S32_F32 0x8c
958 #define CVT_S32_S32 0x0c
959 #define CVT_NEG 0x20
960 #define CVT_RI 0x08
961
962 static void
963 emit_cvt(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src,
964 int wp, unsigned cvn, unsigned fmt)
965 {
966 struct nv50_program_exec *e;
967
968 e = exec(pc);
969 set_long(pc, e);
970
971 e->inst[0] |= 0xa0000000;
972 e->inst[1] |= 0x00004000; /* 32 bit src */
973 e->inst[1] |= (cvn << 16);
974 e->inst[1] |= (fmt << 24);
975 set_src_0(pc, src, e);
976
977 if (wp >= 0)
978 set_pred_wr(pc, 1, wp, e);
979
980 if (dst)
981 set_dst(pc, dst, e);
982 else {
983 e->inst[0] |= 0x000001fc;
984 e->inst[1] |= 0x00000008;
985 }
986
987 emit(pc, e);
988 }
989
990 /* nv50 Condition codes:
991 * 0x1 = LT
992 * 0x2 = EQ
993 * 0x3 = LE
994 * 0x4 = GT
995 * 0x5 = NE
996 * 0x6 = GE
997 * 0x7 = set condition code ? (used before bra.lt/le/gt/ge)
998 * 0x8 = unordered bit (allows NaN)
999 */
1000 static void
1001 emit_set(struct nv50_pc *pc, unsigned ccode, struct nv50_reg *dst, int wp,
1002 struct nv50_reg *src0, struct nv50_reg *src1)
1003 {
1004 static const unsigned cc_swapped[8] = { 0, 4, 2, 6, 1, 5, 3, 7 };
1005
1006 struct nv50_program_exec *e = exec(pc);
1007 struct nv50_reg *rdst;
1008
1009 assert(ccode < 16);
1010 if (check_swap_src_0_1(pc, &src0, &src1))
1011 ccode = cc_swapped[ccode & 7] | (ccode & 8);
1012
1013 rdst = dst;
1014 if (dst && dst->type != P_TEMP)
1015 dst = alloc_temp(pc, NULL);
1016
1017 /* set.u32 */
1018 set_long(pc, e);
1019 e->inst[0] |= 0xb0000000;
1020 e->inst[1] |= 0x60000000 | (ccode << 14);
1021
1022 /* XXX: decuda will disasm as .u16 and use .lo/.hi regs, but
1023 * that doesn't seem to match what the hw actually does
1024 e->inst[1] |= 0x04000000; << breaks things, u32 by default ?
1025 */
1026
1027 if (wp >= 0)
1028 set_pred_wr(pc, 1, wp, e);
1029 if (dst)
1030 set_dst(pc, dst, e);
1031 else {
1032 e->inst[0] |= 0x000001fc;
1033 e->inst[1] |= 0x00000008;
1034 }
1035
1036 set_src_0(pc, src0, e);
1037 set_src_1(pc, src1, e);
1038
1039 emit(pc, e);
1040 pc->if_cond = pc->p->exec_tail; /* record for OPCODE_IF */
1041
1042 /* cvt.f32.u32/s32 (?) if we didn't only write the predicate */
1043 if (rdst)
1044 emit_cvt(pc, rdst, dst, -1, CVTOP_ABS | CVTOP_RN, CVT_F32_S32);
1045 if (rdst && rdst != dst)
1046 free_temp(pc, dst);
1047 }
1048
1049 static INLINE unsigned
1050 map_tgsi_setop_cc(unsigned op)
1051 {
1052 switch (op) {
1053 case TGSI_OPCODE_SLT: return 0x1;
1054 case TGSI_OPCODE_SGE: return 0x6;
1055 case TGSI_OPCODE_SEQ: return 0x2;
1056 case TGSI_OPCODE_SGT: return 0x4;
1057 case TGSI_OPCODE_SLE: return 0x3;
1058 case TGSI_OPCODE_SNE: return 0xd;
1059 default:
1060 assert(0);
1061 return 0;
1062 }
1063 }
1064
1065 static INLINE void
1066 emit_flr(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
1067 {
1068 emit_cvt(pc, dst, src, -1, CVTOP_FLOOR, CVT_F32_F32 | CVT_RI);
1069 }
1070
1071 static void
1072 emit_pow(struct nv50_pc *pc, struct nv50_reg *dst,
1073 struct nv50_reg *v, struct nv50_reg *e)
1074 {
1075 struct nv50_reg *temp = alloc_temp(pc, NULL);
1076
1077 emit_flop(pc, 3, temp, v);
1078 emit_mul(pc, temp, temp, e);
1079 emit_preex2(pc, temp, temp);
1080 emit_flop(pc, 6, dst, temp);
1081
1082 free_temp(pc, temp);
1083 }
1084
1085 static INLINE void
1086 emit_abs(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
1087 {
1088 emit_cvt(pc, dst, src, -1, CVTOP_ABS, CVT_F32_F32);
1089 }
1090
1091 static INLINE void
1092 emit_sat(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
1093 {
1094 emit_cvt(pc, dst, src, -1, CVTOP_SAT, CVT_F32_F32);
1095 }
1096
1097 static void
1098 emit_lit(struct nv50_pc *pc, struct nv50_reg **dst, unsigned mask,
1099 struct nv50_reg **src)
1100 {
1101 struct nv50_reg *one = alloc_immd(pc, 1.0);
1102 struct nv50_reg *zero = alloc_immd(pc, 0.0);
1103 struct nv50_reg *neg128 = alloc_immd(pc, -127.999999);
1104 struct nv50_reg *pos128 = alloc_immd(pc, 127.999999);
1105 struct nv50_reg *tmp[4];
1106 boolean allow32 = pc->allow32;
1107
1108 pc->allow32 = FALSE;
1109
1110 if (mask & (3 << 1)) {
1111 tmp[0] = alloc_temp(pc, NULL);
1112 emit_minmax(pc, 4, tmp[0], src[0], zero);
1113 }
1114
1115 if (mask & (1 << 2)) {
1116 set_pred_wr(pc, 1, 0, pc->p->exec_tail);
1117
1118 tmp[1] = temp_temp(pc);
1119 emit_minmax(pc, 4, tmp[1], src[1], zero);
1120
1121 tmp[3] = temp_temp(pc);
1122 emit_minmax(pc, 4, tmp[3], src[3], neg128);
1123 emit_minmax(pc, 5, tmp[3], tmp[3], pos128);
1124
1125 emit_pow(pc, dst[2], tmp[1], tmp[3]);
1126 emit_mov(pc, dst[2], zero);
1127 set_pred(pc, 3, 0, pc->p->exec_tail);
1128 }
1129
1130 if (mask & (1 << 1))
1131 assimilate_temp(pc, dst[1], tmp[0]);
1132 else
1133 if (mask & (1 << 2))
1134 free_temp(pc, tmp[0]);
1135
1136 pc->allow32 = allow32;
1137
1138 /* do this last, in case src[i,j] == dst[0,3] */
1139 if (mask & (1 << 0))
1140 emit_mov(pc, dst[0], one);
1141
1142 if (mask & (1 << 3))
1143 emit_mov(pc, dst[3], one);
1144
1145 FREE(pos128);
1146 FREE(neg128);
1147 FREE(zero);
1148 FREE(one);
1149 }
1150
1151 static INLINE void
1152 emit_neg(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
1153 {
1154 emit_cvt(pc, dst, src, -1, CVTOP_RN, CVT_F32_F32 | CVT_NEG);
1155 }
1156
1157 static void
1158 emit_kil(struct nv50_pc *pc, struct nv50_reg *src)
1159 {
1160 struct nv50_program_exec *e;
1161 const int r_pred = 1;
1162 unsigned cvn = CVT_F32_F32;
1163
1164 if (src->neg)
1165 cvn |= CVT_NEG;
1166 /* write predicate reg */
1167 emit_cvt(pc, NULL, src, r_pred, CVTOP_RN, cvn);
1168
1169 /* conditional discard */
1170 e = exec(pc);
1171 e->inst[0] = 0x00000002;
1172 set_long(pc, e);
1173 set_pred(pc, 0x1 /* LT */, r_pred, e);
1174 emit(pc, e);
1175 }
1176
1177 static void
1178 emit_tex(struct nv50_pc *pc, struct nv50_reg **dst, unsigned mask,
1179 struct nv50_reg **src, unsigned unit, unsigned type, boolean proj)
1180 {
1181 struct nv50_reg *temp, *t[4];
1182 struct nv50_program_exec *e;
1183
1184 unsigned c, mode, dim;
1185
1186 switch (type) {
1187 case TGSI_TEXTURE_1D:
1188 dim = 1;
1189 break;
1190 case TGSI_TEXTURE_UNKNOWN:
1191 case TGSI_TEXTURE_2D:
1192 case TGSI_TEXTURE_SHADOW1D: /* XXX: x, z */
1193 case TGSI_TEXTURE_RECT:
1194 dim = 2;
1195 break;
1196 case TGSI_TEXTURE_3D:
1197 case TGSI_TEXTURE_CUBE:
1198 case TGSI_TEXTURE_SHADOW2D:
1199 case TGSI_TEXTURE_SHADOWRECT: /* XXX */
1200 dim = 3;
1201 break;
1202 default:
1203 assert(0);
1204 break;
1205 }
1206
1207 /* some cards need t[0]'s hw index to be a multiple of 4 */
1208 alloc_temp4(pc, t, 0);
1209
1210 if (proj) {
1211 if (src[0]->type == P_TEMP && src[0]->rhw != -1) {
1212 mode = pc->interp_mode[src[0]->index];
1213
1214 t[3]->rhw = src[3]->rhw;
1215 emit_interp(pc, t[3], NULL, (mode & INTERP_CENTROID));
1216 emit_flop(pc, 0, t[3], t[3]);
1217
1218 for (c = 0; c < dim; c++) {
1219 t[c]->rhw = src[c]->rhw;
1220 emit_interp(pc, t[c], t[3],
1221 (mode | INTERP_PERSPECTIVE));
1222 }
1223 } else {
1224 emit_flop(pc, 0, t[3], src[3]);
1225 for (c = 0; c < dim; c++)
1226 emit_mul(pc, t[c], src[c], t[3]);
1227
1228 /* XXX: for some reason the blob sometimes uses MAD:
1229 * emit_mad(pc, t[c], src[0][c], t[3], t[3])
1230 * pc->p->exec_tail->inst[1] |= 0x080fc000;
1231 */
1232 }
1233 } else {
1234 if (type == TGSI_TEXTURE_CUBE) {
1235 temp = temp_temp(pc);
1236 emit_minmax(pc, 4, temp, src[0], src[1]);
1237 emit_minmax(pc, 4, temp, temp, src[2]);
1238 emit_flop(pc, 0, temp, temp);
1239 for (c = 0; c < 3; c++)
1240 emit_mul(pc, t[c], src[c], temp);
1241 } else {
1242 for (c = 0; c < dim; c++)
1243 emit_mov(pc, t[c], src[c]);
1244 }
1245 }
1246
1247 e = exec(pc);
1248 set_long(pc, e);
1249 e->inst[0] |= 0xf0000000;
1250 e->inst[1] |= 0x00000004;
1251 set_dst(pc, t[0], e);
1252 e->inst[0] |= (unit << 9);
1253
1254 if (dim == 2)
1255 e->inst[0] |= 0x00400000;
1256 else
1257 if (dim == 3)
1258 e->inst[0] |= 0x00800000;
1259
1260 e->inst[0] |= (mask & 0x3) << 25;
1261 e->inst[1] |= (mask & 0xc) << 12;
1262
1263 emit(pc, e);
1264
1265 #if 1
1266 c = 0;
1267 if (mask & 1) emit_mov(pc, dst[0], t[c++]);
1268 if (mask & 2) emit_mov(pc, dst[1], t[c++]);
1269 if (mask & 4) emit_mov(pc, dst[2], t[c++]);
1270 if (mask & 8) emit_mov(pc, dst[3], t[c]);
1271
1272 free_temp4(pc, t);
1273 #else
1274 /* XXX: if p.e. MUL is used directly after TEX, it would still use
1275 * the texture coordinates, not the fetched values: latency ? */
1276
1277 for (c = 0; c < 4; c++) {
1278 if (mask & (1 << c))
1279 assimilate_temp(pc, dst[c], t[c]);
1280 else
1281 free_temp(pc, t[c]);
1282 }
1283 #endif
1284 }
1285
1286 static void
1287 emit_branch(struct nv50_pc *pc, int pred, unsigned cc,
1288 struct nv50_program_exec **join)
1289 {
1290 struct nv50_program_exec *e = exec(pc);
1291
1292 if (join) {
1293 set_long(pc, e);
1294 e->inst[0] |= 0xa0000002;
1295 emit(pc, e);
1296 *join = e;
1297 e = exec(pc);
1298 }
1299
1300 set_long(pc, e);
1301 e->inst[0] |= 0x10000002;
1302 if (pred >= 0)
1303 set_pred(pc, cc, pred, e);
1304 emit(pc, e);
1305 }
1306
1307 static void
1308 emit_nop(struct nv50_pc *pc)
1309 {
1310 struct nv50_program_exec *e = exec(pc);
1311
1312 e->inst[0] = 0xf0000000;
1313 set_long(pc, e);
1314 e->inst[1] = 0xe0000000;
1315 emit(pc, e);
1316 }
1317
1318 static void
1319 emit_ddx(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
1320 {
1321 struct nv50_program_exec *e = exec(pc);
1322
1323 assert(src->type == P_TEMP);
1324
1325 e->inst[0] = 0xc0140000;
1326 e->inst[1] = 0x89800000;
1327 set_long(pc, e);
1328 set_dst(pc, dst, e);
1329 set_src_0(pc, src, e);
1330 set_src_2(pc, src, e);
1331
1332 emit(pc, e);
1333 }
1334
1335 static void
1336 emit_ddy(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
1337 {
1338 struct nv50_program_exec *e = exec(pc);
1339
1340 assert(src->type == P_TEMP);
1341
1342 if (!src->neg) /* ! double negation */
1343 emit_neg(pc, src, src);
1344
1345 e->inst[0] = 0xc0150000;
1346 e->inst[1] = 0x8a400000;
1347 set_long(pc, e);
1348 set_dst(pc, dst, e);
1349 set_src_0(pc, src, e);
1350 set_src_2(pc, src, e);
1351
1352 emit(pc, e);
1353 }
1354
1355 static void
1356 convert_to_long(struct nv50_pc *pc, struct nv50_program_exec *e)
1357 {
1358 unsigned q = 0, m = ~0;
1359
1360 assert(!is_long(e));
1361
1362 switch (e->inst[0] >> 28) {
1363 case 0x1:
1364 /* MOV */
1365 q = 0x0403c000;
1366 m = 0xffff7fff;
1367 break;
1368 case 0x8:
1369 /* INTERP (move centroid, perspective and flat bits) */
1370 m = ~0x03000100;
1371 q = (e->inst[0] & (3 << 24)) >> (24 - 16);
1372 q |= (e->inst[0] & (1 << 8)) << (18 - 8);
1373 break;
1374 case 0x9:
1375 /* RCP */
1376 break;
1377 case 0xB:
1378 /* ADD */
1379 m = ~(127 << 16);
1380 q = ((e->inst[0] & (~m)) >> 2);
1381 break;
1382 case 0xC:
1383 /* MUL */
1384 m = ~0x00008000;
1385 q = ((e->inst[0] & (~m)) << 12);
1386 break;
1387 case 0xE:
1388 /* MAD (if src2 == dst) */
1389 q = ((e->inst[0] & 0x1fc) << 12);
1390 break;
1391 default:
1392 assert(0);
1393 break;
1394 }
1395
1396 set_long(pc, e);
1397 pc->p->exec_size++;
1398
1399 e->inst[0] &= m;
1400 e->inst[1] |= q;
1401 }
1402
1403 /* Some operations support an optional negation flag. */
1404 static boolean
1405 negate_supported(const struct tgsi_full_instruction *insn, int i)
1406 {
1407 int s;
1408
1409 switch (insn->Instruction.Opcode) {
1410 case TGSI_OPCODE_DDY:
1411 case TGSI_OPCODE_DP3:
1412 case TGSI_OPCODE_DP4:
1413 case TGSI_OPCODE_MUL:
1414 case TGSI_OPCODE_KIL:
1415 case TGSI_OPCODE_ADD:
1416 case TGSI_OPCODE_SUB:
1417 case TGSI_OPCODE_MAD:
1418 break;
1419 case TGSI_OPCODE_POW:
1420 if (i == 1)
1421 break;
1422 return FALSE;
1423 default:
1424 return FALSE;
1425 }
1426
1427 /* Watch out for possible multiple uses of an nv50_reg, we
1428 * can't use nv50_reg::neg in these cases.
1429 */
1430 for (s = 0; s < insn->Instruction.NumSrcRegs; ++s) {
1431 if (s == i)
1432 continue;
1433 if ((insn->FullSrcRegisters[s].SrcRegister.Index ==
1434 insn->FullSrcRegisters[i].SrcRegister.Index) &&
1435 (insn->FullSrcRegisters[s].SrcRegister.File ==
1436 insn->FullSrcRegisters[i].SrcRegister.File))
1437 return FALSE;
1438 }
1439
1440 return TRUE;
1441 }
1442
1443 /* Return a read mask for source registers deduced from opcode & write mask. */
1444 static unsigned
1445 nv50_tgsi_src_mask(const struct tgsi_full_instruction *insn, int c)
1446 {
1447 unsigned x, mask = insn->FullDstRegisters[0].DstRegister.WriteMask;
1448
1449 switch (insn->Instruction.Opcode) {
1450 case TGSI_OPCODE_COS:
1451 case TGSI_OPCODE_SIN:
1452 return (mask & 0x8) | ((mask & 0x7) ? 0x1 : 0x0);
1453 case TGSI_OPCODE_DP3:
1454 return 0x7;
1455 case TGSI_OPCODE_DP4:
1456 case TGSI_OPCODE_DPH:
1457 case TGSI_OPCODE_KIL: /* WriteMask ignored */
1458 return 0xf;
1459 case TGSI_OPCODE_DST:
1460 return mask & (c ? 0xa : 0x6);
1461 case TGSI_OPCODE_EX2:
1462 case TGSI_OPCODE_LG2:
1463 case TGSI_OPCODE_POW:
1464 case TGSI_OPCODE_RCP:
1465 case TGSI_OPCODE_RSQ:
1466 case TGSI_OPCODE_SCS:
1467 return 0x1;
1468 case TGSI_OPCODE_LIT:
1469 return 0xb;
1470 case TGSI_OPCODE_TEX:
1471 case TGSI_OPCODE_TXP:
1472 {
1473 const struct tgsi_instruction_ext_texture *tex;
1474
1475 assert(insn->Instruction.Extended);
1476 tex = &insn->InstructionExtTexture;
1477
1478 mask = 0x7;
1479 if (insn->Instruction.Opcode == TGSI_OPCODE_TXP)
1480 mask |= 0x8;
1481
1482 switch (tex->Texture) {
1483 case TGSI_TEXTURE_1D:
1484 mask &= 0x9;
1485 break;
1486 case TGSI_TEXTURE_2D:
1487 mask &= 0xb;
1488 break;
1489 default:
1490 break;
1491 }
1492 }
1493 return mask;
1494 case TGSI_OPCODE_XPD:
1495 x = 0;
1496 if (mask & 1) x |= 0x6;
1497 if (mask & 2) x |= 0x5;
1498 if (mask & 4) x |= 0x3;
1499 return x;
1500 default:
1501 break;
1502 }
1503
1504 return mask;
1505 }
1506
1507 static struct nv50_reg *
1508 tgsi_dst(struct nv50_pc *pc, int c, const struct tgsi_full_dst_register *dst)
1509 {
1510 switch (dst->DstRegister.File) {
1511 case TGSI_FILE_TEMPORARY:
1512 return &pc->temp[dst->DstRegister.Index * 4 + c];
1513 case TGSI_FILE_OUTPUT:
1514 return &pc->result[dst->DstRegister.Index * 4 + c];
1515 case TGSI_FILE_ADDRESS:
1516 {
1517 struct nv50_reg *r = pc->addr[dst->DstRegister.Index * 4 + c];
1518 if (!r) {
1519 r = alloc_addr(pc, NULL);
1520 pc->addr[dst->DstRegister.Index * 4 + c] = r;
1521 }
1522 assert(r);
1523 return r;
1524 }
1525 case TGSI_FILE_NULL:
1526 return NULL;
1527 default:
1528 break;
1529 }
1530
1531 return NULL;
1532 }
1533
1534 static struct nv50_reg *
1535 tgsi_src(struct nv50_pc *pc, int chan, const struct tgsi_full_src_register *src,
1536 boolean neg)
1537 {
1538 struct nv50_reg *r = NULL;
1539 struct nv50_reg *temp;
1540 unsigned sgn, c, swz;
1541
1542 if (src->SrcRegister.File != TGSI_FILE_CONSTANT)
1543 assert(!src->SrcRegister.Indirect);
1544
1545 sgn = tgsi_util_get_full_src_register_sign_mode(src, chan);
1546
1547 c = tgsi_util_get_full_src_register_swizzle(src, chan);
1548 switch (c) {
1549 case TGSI_SWIZZLE_X:
1550 case TGSI_SWIZZLE_Y:
1551 case TGSI_SWIZZLE_Z:
1552 case TGSI_SWIZZLE_W:
1553 switch (src->SrcRegister.File) {
1554 case TGSI_FILE_INPUT:
1555 r = &pc->attr[src->SrcRegister.Index * 4 + c];
1556 break;
1557 case TGSI_FILE_TEMPORARY:
1558 r = &pc->temp[src->SrcRegister.Index * 4 + c];
1559 break;
1560 case TGSI_FILE_CONSTANT:
1561 if (!src->SrcRegister.Indirect) {
1562 r = &pc->param[src->SrcRegister.Index * 4 + c];
1563 break;
1564 }
1565 /* Indicate indirection by setting r->acc < 0 and
1566 * use the index field to select the address reg.
1567 */
1568 r = MALLOC_STRUCT(nv50_reg);
1569 swz = tgsi_util_get_src_register_swizzle(
1570 &src->SrcRegisterInd, 0);
1571 ctor_reg(r, P_CONST,
1572 src->SrcRegisterInd.Index * 4 + swz, c);
1573 r->acc = -1;
1574 break;
1575 case TGSI_FILE_IMMEDIATE:
1576 r = &pc->immd[src->SrcRegister.Index * 4 + c];
1577 break;
1578 case TGSI_FILE_SAMPLER:
1579 break;
1580 case TGSI_FILE_ADDRESS:
1581 r = pc->addr[src->SrcRegister.Index * 4 + c];
1582 assert(r);
1583 break;
1584 default:
1585 assert(0);
1586 break;
1587 }
1588 break;
1589 default:
1590 assert(0);
1591 break;
1592 }
1593
1594 switch (sgn) {
1595 case TGSI_UTIL_SIGN_KEEP:
1596 break;
1597 case TGSI_UTIL_SIGN_CLEAR:
1598 temp = temp_temp(pc);
1599 emit_abs(pc, temp, r);
1600 r = temp;
1601 break;
1602 case TGSI_UTIL_SIGN_TOGGLE:
1603 if (neg)
1604 r->neg = 1;
1605 else {
1606 temp = temp_temp(pc);
1607 emit_neg(pc, temp, r);
1608 r = temp;
1609 }
1610 break;
1611 case TGSI_UTIL_SIGN_SET:
1612 temp = temp_temp(pc);
1613 emit_abs(pc, temp, r);
1614 if (neg)
1615 temp->neg = 1;
1616 else
1617 emit_neg(pc, temp, temp);
1618 r = temp;
1619 break;
1620 default:
1621 assert(0);
1622 break;
1623 }
1624
1625 return r;
1626 }
1627
1628 /* return TRUE for ops that produce only a single result */
1629 static boolean
1630 is_scalar_op(unsigned op)
1631 {
1632 switch (op) {
1633 case TGSI_OPCODE_COS:
1634 case TGSI_OPCODE_DP2:
1635 case TGSI_OPCODE_DP3:
1636 case TGSI_OPCODE_DP4:
1637 case TGSI_OPCODE_DPH:
1638 case TGSI_OPCODE_EX2:
1639 case TGSI_OPCODE_LG2:
1640 case TGSI_OPCODE_POW:
1641 case TGSI_OPCODE_RCP:
1642 case TGSI_OPCODE_RSQ:
1643 case TGSI_OPCODE_SIN:
1644 /*
1645 case TGSI_OPCODE_KIL:
1646 case TGSI_OPCODE_LIT:
1647 case TGSI_OPCODE_SCS:
1648 */
1649 return TRUE;
1650 default:
1651 return FALSE;
1652 }
1653 }
1654
1655 /* Returns a bitmask indicating which dst components depend
1656 * on source s, component c (reverse of nv50_tgsi_src_mask).
1657 */
1658 static unsigned
1659 nv50_tgsi_dst_revdep(unsigned op, int s, int c)
1660 {
1661 if (is_scalar_op(op))
1662 return 0x1;
1663
1664 switch (op) {
1665 case TGSI_OPCODE_DST:
1666 return (1 << c) & (s ? 0xa : 0x6);
1667 case TGSI_OPCODE_XPD:
1668 switch (c) {
1669 case 0: return 0x6;
1670 case 1: return 0x5;
1671 case 2: return 0x3;
1672 case 3: return 0x0;
1673 default:
1674 assert(0);
1675 return 0x0;
1676 }
1677 case TGSI_OPCODE_LIT:
1678 case TGSI_OPCODE_SCS:
1679 case TGSI_OPCODE_TEX:
1680 case TGSI_OPCODE_TXP:
1681 /* these take care of dangerous swizzles themselves */
1682 return 0x0;
1683 case TGSI_OPCODE_IF:
1684 case TGSI_OPCODE_KIL:
1685 /* don't call this function for these ops */
1686 assert(0);
1687 return 0;
1688 default:
1689 /* linear vector instruction */
1690 return (1 << c);
1691 }
1692 }
1693
1694 static INLINE boolean
1695 has_pred(struct nv50_program_exec *e, unsigned cc)
1696 {
1697 if (!is_long(e) || is_immd(e))
1698 return FALSE;
1699 return ((e->inst[1] & 0x780) == (cc << 7));
1700 }
1701
1702 /* on ENDIF see if we can do "@p0.neu single_op" instead of:
1703 * join_at ENDIF
1704 * @p0.eq bra ENDIF
1705 * single_op
1706 * ENDIF: nop.join
1707 */
1708 static boolean
1709 nv50_kill_branch(struct nv50_pc *pc)
1710 {
1711 int lvl = pc->if_lvl;
1712
1713 if (pc->if_insn[lvl]->next != pc->p->exec_tail)
1714 return FALSE;
1715
1716 /* if ccode == 'true', the BRA is from an ELSE and the predicate
1717 * reg may no longer be valid, since we currently always use $p0
1718 */
1719 if (has_pred(pc->if_insn[lvl], 0xf))
1720 return FALSE;
1721 assert(pc->if_insn[lvl] && pc->br_join[lvl]);
1722
1723 /* We'll use the exec allocated for JOIN_AT (as we can't easily
1724 * update prev's next); if exec_tail is BRK, update the pointer.
1725 */
1726 if (pc->loop_lvl && pc->br_loop[pc->loop_lvl - 1] == pc->p->exec_tail)
1727 pc->br_loop[pc->loop_lvl - 1] = pc->br_join[lvl];
1728
1729 pc->p->exec_size -= 4; /* remove JOIN_AT and BRA */
1730
1731 *pc->br_join[lvl] = *pc->p->exec_tail;
1732
1733 FREE(pc->if_insn[lvl]);
1734 FREE(pc->p->exec_tail);
1735
1736 pc->p->exec_tail = pc->br_join[lvl];
1737 pc->p->exec_tail->next = NULL;
1738 set_pred(pc, 0xd, 0, pc->p->exec_tail);
1739
1740 return TRUE;
1741 }
1742
1743 static boolean
1744 nv50_program_tx_insn(struct nv50_pc *pc,
1745 const struct tgsi_full_instruction *inst)
1746 {
1747 struct nv50_reg *rdst[4], *dst[4], *brdc, *src[3][4], *temp;
1748 unsigned mask, sat, unit;
1749 int i, c;
1750
1751 mask = inst->FullDstRegisters[0].DstRegister.WriteMask;
1752 sat = inst->Instruction.Saturate == TGSI_SAT_ZERO_ONE;
1753
1754 memset(src, 0, sizeof(src));
1755
1756 for (c = 0; c < 4; c++) {
1757 if ((mask & (1 << c)) && !pc->r_dst[c])
1758 dst[c] = tgsi_dst(pc, c, &inst->FullDstRegisters[0]);
1759 else
1760 dst[c] = pc->r_dst[c];
1761 rdst[c] = dst[c];
1762 }
1763
1764 for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
1765 const struct tgsi_full_src_register *fs = &inst->FullSrcRegisters[i];
1766 unsigned src_mask;
1767 boolean neg_supp;
1768
1769 src_mask = nv50_tgsi_src_mask(inst, i);
1770 neg_supp = negate_supported(inst, i);
1771
1772 if (fs->SrcRegister.File == TGSI_FILE_SAMPLER)
1773 unit = fs->SrcRegister.Index;
1774
1775 for (c = 0; c < 4; c++)
1776 if (src_mask & (1 << c))
1777 src[i][c] = tgsi_src(pc, c, fs, neg_supp);
1778 }
1779
1780 brdc = temp = pc->r_brdc;
1781 if (brdc && brdc->type != P_TEMP) {
1782 temp = temp_temp(pc);
1783 if (sat)
1784 brdc = temp;
1785 } else
1786 if (sat) {
1787 for (c = 0; c < 4; c++) {
1788 if (!(mask & (1 << c)) || dst[c]->type == P_TEMP)
1789 continue;
1790 rdst[c] = dst[c];
1791 dst[c] = temp_temp(pc);
1792 }
1793 }
1794
1795 assert(brdc || !is_scalar_op(inst->Instruction.Opcode));
1796
1797 switch (inst->Instruction.Opcode) {
1798 case TGSI_OPCODE_ABS:
1799 for (c = 0; c < 4; c++) {
1800 if (!(mask & (1 << c)))
1801 continue;
1802 emit_abs(pc, dst[c], src[0][c]);
1803 }
1804 break;
1805 case TGSI_OPCODE_ADD:
1806 for (c = 0; c < 4; c++) {
1807 if (!(mask & (1 << c)))
1808 continue;
1809 emit_add(pc, dst[c], src[0][c], src[1][c]);
1810 }
1811 break;
1812 case TGSI_OPCODE_ARL:
1813 assert(src[0][0]);
1814 temp = temp_temp(pc);
1815 emit_cvt(pc, temp, src[0][0], -1, CVTOP_FLOOR, CVT_S32_F32);
1816 emit_arl(pc, dst[0], temp, 4);
1817 break;
1818 case TGSI_OPCODE_BGNLOOP:
1819 pc->loop_pos[pc->loop_lvl++] = pc->p->exec_size;
1820 terminate_mbb(pc);
1821 break;
1822 case TGSI_OPCODE_BRK:
1823 emit_branch(pc, -1, 0, NULL);
1824 assert(pc->loop_lvl > 0);
1825 pc->br_loop[pc->loop_lvl - 1] = pc->p->exec_tail;
1826 break;
1827 case TGSI_OPCODE_CEIL:
1828 for (c = 0; c < 4; c++) {
1829 if (!(mask & (1 << c)))
1830 continue;
1831 emit_cvt(pc, dst[c], src[0][c], -1,
1832 CVTOP_CEIL, CVT_F32_F32 | CVT_RI);
1833 }
1834 break;
1835 case TGSI_OPCODE_CMP:
1836 pc->allow32 = FALSE;
1837 for (c = 0; c < 4; c++) {
1838 if (!(mask & (1 << c)))
1839 continue;
1840 emit_cvt(pc, NULL, src[0][c], 1, CVTOP_RN, CVT_F32_F32);
1841 emit_mov(pc, dst[c], src[1][c]);
1842 set_pred(pc, 0x1, 1, pc->p->exec_tail); /* @SF */
1843 emit_mov(pc, dst[c], src[2][c]);
1844 set_pred(pc, 0x6, 1, pc->p->exec_tail); /* @NSF */
1845 }
1846 break;
1847 case TGSI_OPCODE_COS:
1848 if (mask & 8) {
1849 emit_precossin(pc, temp, src[0][3]);
1850 emit_flop(pc, 5, dst[3], temp);
1851 if (!(mask &= 7))
1852 break;
1853 if (temp == dst[3])
1854 temp = brdc = temp_temp(pc);
1855 }
1856 emit_precossin(pc, temp, src[0][0]);
1857 emit_flop(pc, 5, brdc, temp);
1858 break;
1859 case TGSI_OPCODE_DDX:
1860 for (c = 0; c < 4; c++) {
1861 if (!(mask & (1 << c)))
1862 continue;
1863 emit_ddx(pc, dst[c], src[0][c]);
1864 }
1865 break;
1866 case TGSI_OPCODE_DDY:
1867 for (c = 0; c < 4; c++) {
1868 if (!(mask & (1 << c)))
1869 continue;
1870 emit_ddy(pc, dst[c], src[0][c]);
1871 }
1872 break;
1873 case TGSI_OPCODE_DP3:
1874 emit_mul(pc, temp, src[0][0], src[1][0]);
1875 emit_mad(pc, temp, src[0][1], src[1][1], temp);
1876 emit_mad(pc, brdc, src[0][2], src[1][2], temp);
1877 break;
1878 case TGSI_OPCODE_DP4:
1879 emit_mul(pc, temp, src[0][0], src[1][0]);
1880 emit_mad(pc, temp, src[0][1], src[1][1], temp);
1881 emit_mad(pc, temp, src[0][2], src[1][2], temp);
1882 emit_mad(pc, brdc, src[0][3], src[1][3], temp);
1883 break;
1884 case TGSI_OPCODE_DPH:
1885 emit_mul(pc, temp, src[0][0], src[1][0]);
1886 emit_mad(pc, temp, src[0][1], src[1][1], temp);
1887 emit_mad(pc, temp, src[0][2], src[1][2], temp);
1888 emit_add(pc, brdc, src[1][3], temp);
1889 break;
1890 case TGSI_OPCODE_DST:
1891 if (mask & (1 << 1))
1892 emit_mul(pc, dst[1], src[0][1], src[1][1]);
1893 if (mask & (1 << 2))
1894 emit_mov(pc, dst[2], src[0][2]);
1895 if (mask & (1 << 3))
1896 emit_mov(pc, dst[3], src[1][3]);
1897 if (mask & (1 << 0))
1898 emit_mov_immdval(pc, dst[0], 1.0f);
1899 break;
1900 case TGSI_OPCODE_ELSE:
1901 emit_branch(pc, -1, 0, NULL);
1902 pc->if_insn[--pc->if_lvl]->param.index = pc->p->exec_size;
1903 pc->if_insn[pc->if_lvl++] = pc->p->exec_tail;
1904 terminate_mbb(pc);
1905 break;
1906 case TGSI_OPCODE_ENDIF:
1907 pc->if_insn[--pc->if_lvl]->param.index = pc->p->exec_size;
1908
1909 /* try to replace branch over 1 insn with a predicated insn */
1910 if (nv50_kill_branch(pc) == TRUE)
1911 break;
1912
1913 if (pc->br_join[pc->if_lvl]) {
1914 pc->br_join[pc->if_lvl]->param.index = pc->p->exec_size;
1915 pc->br_join[pc->if_lvl] = NULL;
1916 }
1917 terminate_mbb(pc);
1918 /* emit a NOP as join point, we could set it on the next
1919 * one, but would have to make sure it is long and !immd
1920 */
1921 emit_nop(pc);
1922 pc->p->exec_tail->inst[1] |= 2;
1923 break;
1924 case TGSI_OPCODE_ENDLOOP:
1925 emit_branch(pc, -1, 0, NULL);
1926 pc->p->exec_tail->param.index = pc->loop_pos[--pc->loop_lvl];
1927 pc->br_loop[pc->loop_lvl]->param.index = pc->p->exec_size;
1928 terminate_mbb(pc);
1929 break;
1930 case TGSI_OPCODE_EX2:
1931 emit_preex2(pc, temp, src[0][0]);
1932 emit_flop(pc, 6, brdc, temp);
1933 break;
1934 case TGSI_OPCODE_FLR:
1935 for (c = 0; c < 4; c++) {
1936 if (!(mask & (1 << c)))
1937 continue;
1938 emit_flr(pc, dst[c], src[0][c]);
1939 }
1940 break;
1941 case TGSI_OPCODE_FRC:
1942 temp = temp_temp(pc);
1943 for (c = 0; c < 4; c++) {
1944 if (!(mask & (1 << c)))
1945 continue;
1946 emit_flr(pc, temp, src[0][c]);
1947 emit_sub(pc, dst[c], src[0][c], temp);
1948 }
1949 break;
1950 case TGSI_OPCODE_IF:
1951 /* emitting a join_at may not be necessary */
1952 assert(pc->if_lvl < MAX_IF_DEPTH);
1953 set_pred_wr(pc, 1, 0, pc->if_cond);
1954 emit_branch(pc, 0, 2, &pc->br_join[pc->if_lvl]);
1955 pc->if_insn[pc->if_lvl++] = pc->p->exec_tail;
1956 terminate_mbb(pc);
1957 break;
1958 case TGSI_OPCODE_KIL:
1959 emit_kil(pc, src[0][0]);
1960 emit_kil(pc, src[0][1]);
1961 emit_kil(pc, src[0][2]);
1962 emit_kil(pc, src[0][3]);
1963 break;
1964 case TGSI_OPCODE_LIT:
1965 emit_lit(pc, &dst[0], mask, &src[0][0]);
1966 break;
1967 case TGSI_OPCODE_LG2:
1968 emit_flop(pc, 3, brdc, src[0][0]);
1969 break;
1970 case TGSI_OPCODE_LRP:
1971 temp = temp_temp(pc);
1972 for (c = 0; c < 4; c++) {
1973 if (!(mask & (1 << c)))
1974 continue;
1975 emit_sub(pc, temp, src[1][c], src[2][c]);
1976 emit_mad(pc, dst[c], temp, src[0][c], src[2][c]);
1977 }
1978 break;
1979 case TGSI_OPCODE_MAD:
1980 for (c = 0; c < 4; c++) {
1981 if (!(mask & (1 << c)))
1982 continue;
1983 emit_mad(pc, dst[c], src[0][c], src[1][c], src[2][c]);
1984 }
1985 break;
1986 case TGSI_OPCODE_MAX:
1987 for (c = 0; c < 4; c++) {
1988 if (!(mask & (1 << c)))
1989 continue;
1990 emit_minmax(pc, 4, dst[c], src[0][c], src[1][c]);
1991 }
1992 break;
1993 case TGSI_OPCODE_MIN:
1994 for (c = 0; c < 4; c++) {
1995 if (!(mask & (1 << c)))
1996 continue;
1997 emit_minmax(pc, 5, dst[c], src[0][c], src[1][c]);
1998 }
1999 break;
2000 case TGSI_OPCODE_MOV:
2001 for (c = 0; c < 4; c++) {
2002 if (!(mask & (1 << c)))
2003 continue;
2004 emit_mov(pc, dst[c], src[0][c]);
2005 }
2006 break;
2007 case TGSI_OPCODE_MUL:
2008 for (c = 0; c < 4; c++) {
2009 if (!(mask & (1 << c)))
2010 continue;
2011 emit_mul(pc, dst[c], src[0][c], src[1][c]);
2012 }
2013 break;
2014 case TGSI_OPCODE_POW:
2015 emit_pow(pc, brdc, src[0][0], src[1][0]);
2016 break;
2017 case TGSI_OPCODE_RCP:
2018 emit_flop(pc, 0, brdc, src[0][0]);
2019 break;
2020 case TGSI_OPCODE_RSQ:
2021 emit_flop(pc, 2, brdc, src[0][0]);
2022 break;
2023 case TGSI_OPCODE_SCS:
2024 temp = temp_temp(pc);
2025 if (mask & 3)
2026 emit_precossin(pc, temp, src[0][0]);
2027 if (mask & (1 << 0))
2028 emit_flop(pc, 5, dst[0], temp);
2029 if (mask & (1 << 1))
2030 emit_flop(pc, 4, dst[1], temp);
2031 if (mask & (1 << 2))
2032 emit_mov_immdval(pc, dst[2], 0.0);
2033 if (mask & (1 << 3))
2034 emit_mov_immdval(pc, dst[3], 1.0);
2035 break;
2036 case TGSI_OPCODE_SIN:
2037 if (mask & 8) {
2038 emit_precossin(pc, temp, src[0][3]);
2039 emit_flop(pc, 4, dst[3], temp);
2040 if (!(mask &= 7))
2041 break;
2042 if (temp == dst[3])
2043 temp = brdc = temp_temp(pc);
2044 }
2045 emit_precossin(pc, temp, src[0][0]);
2046 emit_flop(pc, 4, brdc, temp);
2047 break;
2048 case TGSI_OPCODE_SLT:
2049 case TGSI_OPCODE_SGE:
2050 case TGSI_OPCODE_SEQ:
2051 case TGSI_OPCODE_SGT:
2052 case TGSI_OPCODE_SLE:
2053 case TGSI_OPCODE_SNE:
2054 i = map_tgsi_setop_cc(inst->Instruction.Opcode);
2055 for (c = 0; c < 4; c++) {
2056 if (!(mask & (1 << c)))
2057 continue;
2058 emit_set(pc, i, dst[c], -1, src[0][c], src[1][c]);
2059 }
2060 break;
2061 case TGSI_OPCODE_SUB:
2062 for (c = 0; c < 4; c++) {
2063 if (!(mask & (1 << c)))
2064 continue;
2065 emit_sub(pc, dst[c], src[0][c], src[1][c]);
2066 }
2067 break;
2068 case TGSI_OPCODE_TEX:
2069 emit_tex(pc, dst, mask, src[0], unit,
2070 inst->InstructionExtTexture.Texture, FALSE);
2071 break;
2072 case TGSI_OPCODE_TXP:
2073 emit_tex(pc, dst, mask, src[0], unit,
2074 inst->InstructionExtTexture.Texture, TRUE);
2075 break;
2076 case TGSI_OPCODE_TRUNC:
2077 for (c = 0; c < 4; c++) {
2078 if (!(mask & (1 << c)))
2079 continue;
2080 emit_cvt(pc, dst[c], src[0][c], -1,
2081 CVTOP_TRUNC, CVT_F32_F32 | CVT_RI);
2082 }
2083 break;
2084 case TGSI_OPCODE_XPD:
2085 temp = temp_temp(pc);
2086 if (mask & (1 << 0)) {
2087 emit_mul(pc, temp, src[0][2], src[1][1]);
2088 emit_msb(pc, dst[0], src[0][1], src[1][2], temp);
2089 }
2090 if (mask & (1 << 1)) {
2091 emit_mul(pc, temp, src[0][0], src[1][2]);
2092 emit_msb(pc, dst[1], src[0][2], src[1][0], temp);
2093 }
2094 if (mask & (1 << 2)) {
2095 emit_mul(pc, temp, src[0][1], src[1][0]);
2096 emit_msb(pc, dst[2], src[0][0], src[1][1], temp);
2097 }
2098 if (mask & (1 << 3))
2099 emit_mov_immdval(pc, dst[3], 1.0);
2100 break;
2101 case TGSI_OPCODE_END:
2102 break;
2103 default:
2104 NOUVEAU_ERR("invalid opcode %d\n", inst->Instruction.Opcode);
2105 return FALSE;
2106 }
2107
2108 if (brdc) {
2109 if (sat)
2110 emit_sat(pc, brdc, brdc);
2111 for (c = 0; c < 4; c++)
2112 if ((mask & (1 << c)) && dst[c] != brdc)
2113 emit_mov(pc, dst[c], brdc);
2114 } else
2115 if (sat) {
2116 for (c = 0; c < 4; c++) {
2117 if (!(mask & (1 << c)))
2118 continue;
2119 /* in this case we saturate later */
2120 if (dst[c]->type == P_TEMP && dst[c]->index < 0)
2121 continue;
2122 emit_sat(pc, rdst[c], dst[c]);
2123 }
2124 }
2125
2126 for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
2127 for (c = 0; c < 4; c++) {
2128 if (!src[i][c])
2129 continue;
2130 src[i][c]->neg = 0;
2131 if (src[i][c]->index == -1 && src[i][c]->type == P_IMMD)
2132 FREE(src[i][c]);
2133 else
2134 if (src[i][c]->acc < 0 && src[i][c]->type == P_CONST)
2135 FREE(src[i][c]); /* indirect constant */
2136 }
2137 }
2138
2139 kill_temp_temp(pc);
2140 return TRUE;
2141 }
2142
2143 static void
2144 prep_inspect_insn(struct nv50_pc *pc, const struct tgsi_full_instruction *insn)
2145 {
2146 struct nv50_reg *reg = NULL;
2147 const struct tgsi_full_src_register *src;
2148 const struct tgsi_dst_register *dst;
2149 unsigned i, c, k, mask;
2150
2151 dst = &insn->FullDstRegisters[0].DstRegister;
2152 mask = dst->WriteMask;
2153
2154 if (dst->File == TGSI_FILE_TEMPORARY)
2155 reg = pc->temp;
2156 else
2157 if (dst->File == TGSI_FILE_OUTPUT)
2158 reg = pc->result;
2159
2160 if (reg) {
2161 for (c = 0; c < 4; c++) {
2162 if (!(mask & (1 << c)))
2163 continue;
2164 reg[dst->Index * 4 + c].acc = pc->insn_nr;
2165 }
2166 }
2167
2168 for (i = 0; i < insn->Instruction.NumSrcRegs; i++) {
2169 src = &insn->FullSrcRegisters[i];
2170
2171 if (src->SrcRegister.File == TGSI_FILE_TEMPORARY)
2172 reg = pc->temp;
2173 else
2174 if (src->SrcRegister.File == TGSI_FILE_INPUT)
2175 reg = pc->attr;
2176 else
2177 continue;
2178
2179 mask = nv50_tgsi_src_mask(insn, i);
2180
2181 for (c = 0; c < 4; c++) {
2182 if (!(mask & (1 << c)))
2183 continue;
2184 k = tgsi_util_get_full_src_register_swizzle(src, c);
2185
2186 reg[src->SrcRegister.Index * 4 + k].acc = pc->insn_nr;
2187 }
2188 }
2189 }
2190
2191 /* Returns a bitmask indicating which dst components need to be
2192 * written to temporaries first to avoid 'corrupting' sources.
2193 *
2194 * m[i] (out) indicate component to write in the i-th position
2195 * rdep[c] (in) bitmasks of dst[i] that require dst[c] as source
2196 */
2197 static unsigned
2198 nv50_revdep_reorder(unsigned m[4], unsigned rdep[4])
2199 {
2200 unsigned i, c, x, unsafe;
2201
2202 for (c = 0; c < 4; c++)
2203 m[c] = c;
2204
2205 /* Swap as long as a dst component written earlier is depended on
2206 * by one written later, but the next one isn't depended on by it.
2207 */
2208 for (c = 0; c < 3; c++) {
2209 if (rdep[m[c + 1]] & (1 << m[c]))
2210 continue; /* if next one is depended on by us */
2211 for (i = c + 1; i < 4; i++)
2212 /* if we are depended on by a later one */
2213 if (rdep[m[c]] & (1 << m[i]))
2214 break;
2215 if (i == 4)
2216 continue;
2217 /* now, swap */
2218 x = m[c];
2219 m[c] = m[c + 1];
2220 m[c + 1] = x;
2221
2222 /* restart */
2223 c = 0;
2224 }
2225
2226 /* mark dependencies that could not be resolved by reordering */
2227 for (i = 0; i < 3; ++i)
2228 for (c = i + 1; c < 4; ++c)
2229 if (rdep[m[i]] & (1 << m[c]))
2230 unsafe |= (1 << i);
2231
2232 /* NOTE: $unsafe is with respect to order, not component */
2233 return unsafe;
2234 }
2235
2236 /* Select a suitable dst register for broadcasting scalar results,
2237 * or return NULL if we have to allocate an extra TEMP.
2238 *
2239 * If e.g. only 1 component is written, we may also emit the final
2240 * result to a write-only register.
2241 */
2242 static struct nv50_reg *
2243 tgsi_broadcast_dst(struct nv50_pc *pc,
2244 const struct tgsi_full_dst_register *fd, unsigned mask)
2245 {
2246 if (fd->DstRegister.File == TGSI_FILE_TEMPORARY) {
2247 int c = ffs(~mask & fd->DstRegister.WriteMask);
2248 if (c)
2249 return tgsi_dst(pc, c - 1, fd);
2250 } else {
2251 int c = ffs(fd->DstRegister.WriteMask) - 1;
2252 if ((1 << c) == fd->DstRegister.WriteMask)
2253 return tgsi_dst(pc, c, fd);
2254 }
2255
2256 return NULL;
2257 }
2258
2259 /* Scan source swizzles and return a bitmask indicating dst regs that
2260 * also occur among the src regs, and fill rdep for nv50_revdep_reoder.
2261 */
2262 static unsigned
2263 nv50_tgsi_scan_swizzle(const struct tgsi_full_instruction *insn,
2264 unsigned rdep[4])
2265 {
2266 const struct tgsi_full_dst_register *fd = &insn->FullDstRegisters[0];
2267 const struct tgsi_full_src_register *fs;
2268 unsigned i, deqs = 0;
2269
2270 for (i = 0; i < 4; ++i)
2271 rdep[i] = 0;
2272
2273 for (i = 0; i < insn->Instruction.NumSrcRegs; i++) {
2274 unsigned chn, mask = nv50_tgsi_src_mask(insn, i);
2275 boolean neg_supp = negate_supported(insn, i);
2276
2277 fs = &insn->FullSrcRegisters[i];
2278 if (fs->SrcRegister.File != fd->DstRegister.File ||
2279 fs->SrcRegister.Index != fd->DstRegister.Index)
2280 continue;
2281
2282 for (chn = 0; chn < 4; ++chn) {
2283 unsigned s, c;
2284
2285 if (!(mask & (1 << chn))) /* src is not read */
2286 continue;
2287 c = tgsi_util_get_full_src_register_swizzle(fs, chn);
2288 s = tgsi_util_get_full_src_register_sign_mode(fs, chn);
2289
2290 if (!(fd->DstRegister.WriteMask & (1 << c)))
2291 continue;
2292
2293 /* no danger if src is copied to TEMP first */
2294 if ((s != TGSI_UTIL_SIGN_KEEP) &&
2295 (s != TGSI_UTIL_SIGN_TOGGLE || !neg_supp))
2296 continue;
2297
2298 rdep[c] |= nv50_tgsi_dst_revdep(
2299 insn->Instruction.Opcode, i, chn);
2300 deqs |= (1 << c);
2301 }
2302 }
2303
2304 return deqs;
2305 }
2306
2307 static boolean
2308 nv50_tgsi_insn(struct nv50_pc *pc, const union tgsi_full_token *tok)
2309 {
2310 struct tgsi_full_instruction insn = tok->FullInstruction;
2311 const struct tgsi_full_dst_register *fd;
2312 unsigned i, deqs, rdep[4], m[4];
2313
2314 fd = &tok->FullInstruction.FullDstRegisters[0];
2315 deqs = nv50_tgsi_scan_swizzle(&insn, rdep);
2316
2317 if (is_scalar_op(insn.Instruction.Opcode)) {
2318 pc->r_brdc = tgsi_broadcast_dst(pc, fd, deqs);
2319 if (!pc->r_brdc)
2320 pc->r_brdc = temp_temp(pc);
2321 return nv50_program_tx_insn(pc, &insn);
2322 }
2323 pc->r_brdc = NULL;
2324
2325 if (!deqs)
2326 return nv50_program_tx_insn(pc, &insn);
2327
2328 deqs = nv50_revdep_reorder(m, rdep);
2329
2330 for (i = 0; i < 4; ++i) {
2331 assert(pc->r_dst[m[i]] == NULL);
2332
2333 insn.FullDstRegisters[0].DstRegister.WriteMask =
2334 fd->DstRegister.WriteMask & (1 << m[i]);
2335
2336 if (!insn.FullDstRegisters[0].DstRegister.WriteMask)
2337 continue;
2338
2339 if (deqs & (1 << i))
2340 pc->r_dst[m[i]] = alloc_temp(pc, NULL);
2341
2342 if (!nv50_program_tx_insn(pc, &insn))
2343 return FALSE;
2344 }
2345
2346 for (i = 0; i < 4; i++) {
2347 struct nv50_reg *reg = pc->r_dst[i];
2348 if (!reg)
2349 continue;
2350 pc->r_dst[i] = NULL;
2351
2352 if (insn.Instruction.Saturate == TGSI_SAT_ZERO_ONE)
2353 emit_sat(pc, tgsi_dst(pc, i, fd), reg);
2354 else
2355 emit_mov(pc, tgsi_dst(pc, i, fd), reg);
2356 free_temp(pc, reg);
2357 }
2358
2359 return TRUE;
2360 }
2361
2362 static void
2363 load_interpolant(struct nv50_pc *pc, struct nv50_reg *reg)
2364 {
2365 struct nv50_reg *iv, **ppiv;
2366 unsigned mode = pc->interp_mode[reg->index];
2367
2368 ppiv = (mode & INTERP_CENTROID) ? &pc->iv_c : &pc->iv_p;
2369 iv = *ppiv;
2370
2371 if ((mode & INTERP_PERSPECTIVE) && !iv) {
2372 iv = *ppiv = alloc_temp(pc, NULL);
2373 iv->rhw = popcnt4(pc->p->cfg.regs[1] >> 24) - 1;
2374
2375 emit_interp(pc, iv, NULL, mode & INTERP_CENTROID);
2376 emit_flop(pc, 0, iv, iv);
2377
2378 /* XXX: when loading interpolants dynamically, move these
2379 * to the program head, or make sure it can't be skipped.
2380 */
2381 }
2382
2383 emit_interp(pc, reg, iv, mode);
2384 }
2385
2386 static boolean
2387 nv50_program_tx_prep(struct nv50_pc *pc)
2388 {
2389 struct tgsi_parse_context tp;
2390 struct nv50_program *p = pc->p;
2391 boolean ret = FALSE;
2392 unsigned i, c, flat_nr = 0;
2393
2394 tgsi_parse_init(&tp, pc->p->pipe.tokens);
2395 while (!tgsi_parse_end_of_tokens(&tp)) {
2396 const union tgsi_full_token *tok = &tp.FullToken;
2397
2398 tgsi_parse_token(&tp);
2399 switch (tok->Token.Type) {
2400 case TGSI_TOKEN_TYPE_IMMEDIATE:
2401 {
2402 const struct tgsi_full_immediate *imm =
2403 &tp.FullToken.FullImmediate;
2404
2405 ctor_immd(pc, imm->u[0].Float,
2406 imm->u[1].Float,
2407 imm->u[2].Float,
2408 imm->u[3].Float);
2409 }
2410 break;
2411 case TGSI_TOKEN_TYPE_DECLARATION:
2412 {
2413 const struct tgsi_full_declaration *d;
2414 unsigned si, last, first, mode;
2415
2416 d = &tp.FullToken.FullDeclaration;
2417 first = d->DeclarationRange.First;
2418 last = d->DeclarationRange.Last;
2419
2420 switch (d->Declaration.File) {
2421 case TGSI_FILE_TEMPORARY:
2422 break;
2423 case TGSI_FILE_OUTPUT:
2424 if (!d->Declaration.Semantic ||
2425 p->type == PIPE_SHADER_FRAGMENT)
2426 break;
2427
2428 si = d->Semantic.SemanticIndex;
2429 switch (d->Semantic.SemanticName) {
2430 case TGSI_SEMANTIC_BCOLOR:
2431 p->cfg.two_side[si].hw = first;
2432 if (p->cfg.io_nr > first)
2433 p->cfg.io_nr = first;
2434 break;
2435 case TGSI_SEMANTIC_PSIZE:
2436 p->cfg.psiz = first;
2437 if (p->cfg.io_nr > first)
2438 p->cfg.io_nr = first;
2439 break;
2440 /*
2441 case TGSI_SEMANTIC_CLIP_DISTANCE:
2442 p->cfg.clpd = MIN2(p->cfg.clpd, first);
2443 break;
2444 */
2445 default:
2446 break;
2447 }
2448 break;
2449 case TGSI_FILE_INPUT:
2450 {
2451 if (p->type != PIPE_SHADER_FRAGMENT)
2452 break;
2453
2454 switch (d->Declaration.Interpolate) {
2455 case TGSI_INTERPOLATE_CONSTANT:
2456 mode = INTERP_FLAT;
2457 flat_nr++;
2458 break;
2459 case TGSI_INTERPOLATE_PERSPECTIVE:
2460 mode = INTERP_PERSPECTIVE;
2461 p->cfg.regs[1] |= 0x08 << 24;
2462 break;
2463 default:
2464 mode = INTERP_LINEAR;
2465 break;
2466 }
2467 if (d->Declaration.Centroid)
2468 mode |= INTERP_CENTROID;
2469
2470 assert(last < 32);
2471 for (i = first; i <= last; i++)
2472 pc->interp_mode[i] = mode;
2473 }
2474 break;
2475 case TGSI_FILE_ADDRESS:
2476 case TGSI_FILE_CONSTANT:
2477 case TGSI_FILE_SAMPLER:
2478 break;
2479 default:
2480 NOUVEAU_ERR("bad decl file %d\n",
2481 d->Declaration.File);
2482 goto out_err;
2483 }
2484 }
2485 break;
2486 case TGSI_TOKEN_TYPE_INSTRUCTION:
2487 pc->insn_nr++;
2488 prep_inspect_insn(pc, &tok->FullInstruction);
2489 break;
2490 default:
2491 break;
2492 }
2493 }
2494
2495 if (p->type == PIPE_SHADER_VERTEX) {
2496 int rid = 0;
2497
2498 for (i = 0; i < pc->attr_nr * 4; ++i) {
2499 if (pc->attr[i].acc) {
2500 pc->attr[i].hw = rid++;
2501 p->cfg.attr[i / 32] |= 1 << (i % 32);
2502 }
2503 }
2504
2505 for (i = 0, rid = 0; i < pc->result_nr; ++i) {
2506 p->cfg.io[i].hw = rid;
2507 p->cfg.io[i].id_vp = i;
2508
2509 for (c = 0; c < 4; ++c) {
2510 int n = i * 4 + c;
2511 if (!pc->result[n].acc)
2512 continue;
2513 pc->result[n].hw = rid++;
2514 p->cfg.io[i].mask |= 1 << c;
2515 }
2516 }
2517
2518 for (c = 0; c < 2; ++c)
2519 if (p->cfg.two_side[c].hw < 0x40)
2520 p->cfg.two_side[c] = p->cfg.io[
2521 p->cfg.two_side[c].hw];
2522
2523 if (p->cfg.psiz < 0x40)
2524 p->cfg.psiz = p->cfg.io[p->cfg.psiz].hw;
2525 } else
2526 if (p->type == PIPE_SHADER_FRAGMENT) {
2527 int rid, aid;
2528 unsigned n = 0, m = pc->attr_nr - flat_nr;
2529
2530 int base = (TGSI_SEMANTIC_POSITION ==
2531 p->info.input_semantic_name[0]) ? 0 : 1;
2532
2533 /* non-flat interpolants have to be mapped to
2534 * the lower hardware IDs, so sort them:
2535 */
2536 for (i = 0; i < pc->attr_nr; i++) {
2537 if (pc->interp_mode[i] == INTERP_FLAT) {
2538 p->cfg.io[m].id_vp = i + base;
2539 p->cfg.io[m++].id_fp = i;
2540 } else {
2541 if (!(pc->interp_mode[i] & INTERP_PERSPECTIVE))
2542 p->cfg.io[n].linear = TRUE;
2543 p->cfg.io[n].id_vp = i + base;
2544 p->cfg.io[n++].id_fp = i;
2545 }
2546 }
2547
2548 if (!base) /* set w-coordinate mask from perspective interp */
2549 p->cfg.io[0].mask |= p->cfg.regs[1] >> 24;
2550
2551 aid = popcnt4( /* if fcrd isn't contained in cfg.io */
2552 base ? (p->cfg.regs[1] >> 24) : p->cfg.io[0].mask);
2553
2554 for (n = 0; n < pc->attr_nr; ++n) {
2555 p->cfg.io[n].hw = rid = aid;
2556 i = p->cfg.io[n].id_fp;
2557
2558 for (c = 0; c < 4; ++c) {
2559 if (!pc->attr[i * 4 + c].acc)
2560 continue;
2561 pc->attr[i * 4 + c].rhw = rid++;
2562 p->cfg.io[n].mask |= 1 << c;
2563
2564 load_interpolant(pc, &pc->attr[i * 4 + c]);
2565 }
2566 aid += popcnt4(p->cfg.io[n].mask);
2567 }
2568
2569 if (!base)
2570 p->cfg.regs[1] |= p->cfg.io[0].mask << 24;
2571
2572 m = popcnt4(p->cfg.regs[1] >> 24);
2573
2574 /* set count of non-position inputs and of non-flat
2575 * non-position inputs for FP_INTERPOLANT_CTRL
2576 */
2577 p->cfg.regs[1] |= aid - m;
2578
2579 if (flat_nr) {
2580 i = p->cfg.io[pc->attr_nr - flat_nr].hw;
2581 p->cfg.regs[1] |= (i - m) << 16;
2582 } else
2583 p->cfg.regs[1] |= p->cfg.regs[1] << 16;
2584
2585 /* mark color semantic for light-twoside */
2586 n = 0x40;
2587 for (i = 0; i < pc->attr_nr; i++) {
2588 ubyte si, sn;
2589
2590 sn = p->info.input_semantic_name[p->cfg.io[i].id_fp];
2591 si = p->info.input_semantic_index[p->cfg.io[i].id_fp];
2592
2593 if (sn == TGSI_SEMANTIC_COLOR) {
2594 p->cfg.two_side[si] = p->cfg.io[i];
2595
2596 /* increase colour count */
2597 p->cfg.regs[0] += popcnt4(
2598 p->cfg.two_side[si].mask) << 16;
2599
2600 n = MIN2(n, p->cfg.io[i].hw - m);
2601 }
2602 }
2603 if (n < 0x40)
2604 p->cfg.regs[0] += n;
2605
2606 /* Initialize FP results:
2607 * FragDepth is always first TGSI and last hw output
2608 */
2609 i = p->info.writes_z ? 4 : 0;
2610 for (rid = 0; i < pc->result_nr * 4; i++)
2611 pc->result[i].rhw = rid++;
2612 if (p->info.writes_z)
2613 pc->result[2].rhw = rid;
2614
2615 p->cfg.high_result = rid;
2616 }
2617
2618 if (pc->immd_nr) {
2619 int rid = 0;
2620
2621 pc->immd = MALLOC(pc->immd_nr * 4 * sizeof(struct nv50_reg));
2622 if (!pc->immd)
2623 goto out_err;
2624
2625 for (i = 0; i < pc->immd_nr; i++) {
2626 for (c = 0; c < 4; c++, rid++)
2627 ctor_reg(&pc->immd[rid], P_IMMD, i, rid);
2628 }
2629 }
2630
2631 ret = TRUE;
2632 out_err:
2633 if (pc->iv_p)
2634 free_temp(pc, pc->iv_p);
2635 if (pc->iv_c)
2636 free_temp(pc, pc->iv_c);
2637
2638 tgsi_parse_free(&tp);
2639 return ret;
2640 }
2641
2642 static void
2643 free_nv50_pc(struct nv50_pc *pc)
2644 {
2645 if (pc->immd)
2646 FREE(pc->immd);
2647 if (pc->param)
2648 FREE(pc->param);
2649 if (pc->result)
2650 FREE(pc->result);
2651 if (pc->attr)
2652 FREE(pc->attr);
2653 if (pc->temp)
2654 FREE(pc->temp);
2655
2656 FREE(pc);
2657 }
2658
2659 static boolean
2660 ctor_nv50_pc(struct nv50_pc *pc, struct nv50_program *p)
2661 {
2662 int i, c;
2663 unsigned rtype[2] = { P_ATTR, P_RESULT };
2664
2665 pc->p = p;
2666 pc->temp_nr = p->info.file_max[TGSI_FILE_TEMPORARY] + 1;
2667 pc->attr_nr = p->info.file_max[TGSI_FILE_INPUT] + 1;
2668 pc->result_nr = p->info.file_max[TGSI_FILE_OUTPUT] + 1;
2669 pc->param_nr = p->info.file_max[TGSI_FILE_CONSTANT] + 1;
2670 pc->addr_nr = p->info.file_max[TGSI_FILE_ADDRESS] + 1;
2671 assert(pc->addr_nr <= 2);
2672
2673 p->cfg.high_temp = 4;
2674
2675 p->cfg.two_side[0].hw = 0x40;
2676 p->cfg.two_side[1].hw = 0x40;
2677
2678 switch (p->type) {
2679 case PIPE_SHADER_VERTEX:
2680 p->cfg.psiz = 0x40;
2681 p->cfg.clpd = 0x40;
2682 p->cfg.io_nr = pc->result_nr;
2683 break;
2684 case PIPE_SHADER_FRAGMENT:
2685 rtype[0] = rtype[1] = P_TEMP;
2686
2687 p->cfg.regs[0] = 0x01000004;
2688 p->cfg.io_nr = pc->attr_nr;
2689
2690 if (p->info.writes_z) {
2691 p->cfg.regs[2] |= 0x00000100;
2692 p->cfg.regs[3] |= 0x00000011;
2693 }
2694 if (p->info.uses_kill)
2695 p->cfg.regs[2] |= 0x00100000;
2696 break;
2697 }
2698
2699 if (pc->temp_nr) {
2700 pc->temp = MALLOC(pc->temp_nr * 4 * sizeof(struct nv50_reg));
2701 if (!pc->temp)
2702 return FALSE;
2703
2704 for (i = 0; i < pc->temp_nr * 4; ++i)
2705 ctor_reg(&pc->temp[i], P_TEMP, i / 4, -1);
2706 }
2707
2708 if (pc->attr_nr) {
2709 pc->attr = MALLOC(pc->attr_nr * 4 * sizeof(struct nv50_reg));
2710 if (!pc->attr)
2711 return FALSE;
2712
2713 for (i = 0; i < pc->attr_nr * 4; ++i)
2714 ctor_reg(&pc->attr[i], rtype[0], i / 4, -1);
2715 }
2716
2717 if (pc->result_nr) {
2718 unsigned nr = pc->result_nr * 4;
2719
2720 pc->result = MALLOC(nr * sizeof(struct nv50_reg));
2721 if (!pc->result)
2722 return FALSE;
2723
2724 for (i = 0; i < nr; ++i)
2725 ctor_reg(&pc->result[i], rtype[1], i / 4, -1);
2726 }
2727
2728 if (pc->param_nr) {
2729 int rid = 0;
2730
2731 pc->param = MALLOC(pc->param_nr * 4 * sizeof(struct nv50_reg));
2732 if (!pc->param)
2733 return FALSE;
2734
2735 for (i = 0; i < pc->param_nr; ++i)
2736 for (c = 0; c < 4; ++c, ++rid)
2737 ctor_reg(&pc->param[rid], P_CONST, i, rid);
2738 }
2739
2740 if (pc->addr_nr) {
2741 pc->addr = CALLOC(pc->addr_nr * 4, sizeof(struct nv50_reg *));
2742 if (!pc->addr)
2743 return FALSE;
2744 }
2745 for (i = 0; i < NV50_SU_MAX_ADDR; ++i)
2746 ctor_reg(&pc->r_addr[i], P_ADDR, -1, i + 1);
2747
2748 return TRUE;
2749 }
2750
2751 static void
2752 nv50_fp_move_results(struct nv50_pc *pc)
2753 {
2754 struct nv50_reg reg;
2755 unsigned i;
2756
2757 ctor_reg(&reg, P_TEMP, -1, -1);
2758
2759 for (i = 0; i < pc->result_nr * 4; ++i) {
2760 if (pc->result[i].rhw < 0 || pc->result[i].hw < 0)
2761 continue;
2762 if (pc->result[i].rhw != pc->result[i].hw) {
2763 reg.hw = pc->result[i].rhw;
2764 emit_mov(pc, &reg, &pc->result[i]);
2765 }
2766 }
2767 }
2768
2769 static void
2770 nv50_program_fixup_insns(struct nv50_pc *pc)
2771 {
2772 struct nv50_program_exec *e, *prev = NULL, **bra_list;
2773 unsigned i, n, pos;
2774
2775 bra_list = CALLOC(pc->p->exec_size, sizeof(struct nv50_program_exec *));
2776
2777 /* Collect branch instructions, we need to adjust their offsets
2778 * when converting 32 bit instructions to 64 bit ones
2779 */
2780 for (n = 0, e = pc->p->exec_head; e; e = e->next)
2781 if (e->param.index >= 0 && !e->param.mask)
2782 bra_list[n++] = e;
2783
2784 /* Make sure we don't have any single 32 bit instructions. */
2785 for (e = pc->p->exec_head, pos = 0; e; e = e->next) {
2786 pos += is_long(e) ? 2 : 1;
2787
2788 if ((pos & 1) && (!e->next || is_long(e->next))) {
2789 for (i = 0; i < n; ++i)
2790 if (bra_list[i]->param.index >= pos)
2791 bra_list[i]->param.index += 1;
2792 convert_to_long(pc, e);
2793 ++pos;
2794 }
2795 if (e->next)
2796 prev = e;
2797 }
2798
2799 assert(!is_immd(pc->p->exec_head));
2800 assert(!is_immd(pc->p->exec_tail));
2801
2802 /* last instruction must be long so it can have the end bit set */
2803 if (!is_long(pc->p->exec_tail)) {
2804 convert_to_long(pc, pc->p->exec_tail);
2805 if (prev)
2806 convert_to_long(pc, prev);
2807 }
2808 assert(!(pc->p->exec_tail->inst[1] & 2));
2809 /* set the end-bit */
2810 pc->p->exec_tail->inst[1] |= 1;
2811
2812 FREE(bra_list);
2813 }
2814
2815 static boolean
2816 nv50_program_tx(struct nv50_program *p)
2817 {
2818 struct tgsi_parse_context parse;
2819 struct nv50_pc *pc;
2820 boolean ret;
2821
2822 pc = CALLOC_STRUCT(nv50_pc);
2823 if (!pc)
2824 return FALSE;
2825
2826 ret = ctor_nv50_pc(pc, p);
2827 if (ret == FALSE)
2828 goto out_cleanup;
2829
2830 ret = nv50_program_tx_prep(pc);
2831 if (ret == FALSE)
2832 goto out_cleanup;
2833
2834 tgsi_parse_init(&parse, pc->p->pipe.tokens);
2835 while (!tgsi_parse_end_of_tokens(&parse)) {
2836 const union tgsi_full_token *tok = &parse.FullToken;
2837
2838 /* don't allow half insn/immd on first and last instruction */
2839 pc->allow32 = TRUE;
2840 if (pc->insn_cur == 0 || pc->insn_cur + 2 == pc->insn_nr)
2841 pc->allow32 = FALSE;
2842
2843 tgsi_parse_token(&parse);
2844
2845 switch (tok->Token.Type) {
2846 case TGSI_TOKEN_TYPE_INSTRUCTION:
2847 ++pc->insn_cur;
2848 ret = nv50_tgsi_insn(pc, tok);
2849 if (ret == FALSE)
2850 goto out_err;
2851 break;
2852 default:
2853 break;
2854 }
2855 }
2856
2857 if (pc->p->type == PIPE_SHADER_FRAGMENT)
2858 nv50_fp_move_results(pc);
2859
2860 nv50_program_fixup_insns(pc);
2861
2862 p->param_nr = pc->param_nr * 4;
2863 p->immd_nr = pc->immd_nr * 4;
2864 p->immd = pc->immd_buf;
2865
2866 out_err:
2867 tgsi_parse_free(&parse);
2868
2869 out_cleanup:
2870 free_nv50_pc(pc);
2871 return ret;
2872 }
2873
2874 static void
2875 nv50_program_validate(struct nv50_context *nv50, struct nv50_program *p)
2876 {
2877 if (nv50_program_tx(p) == FALSE)
2878 assert(0);
2879 p->translated = TRUE;
2880 }
2881
2882 static void
2883 nv50_program_upload_data(struct nv50_context *nv50, float *map,
2884 unsigned start, unsigned count, unsigned cbuf)
2885 {
2886 struct nouveau_channel *chan = nv50->screen->base.channel;
2887 struct nouveau_grobj *tesla = nv50->screen->tesla;
2888
2889 while (count) {
2890 unsigned nr = count > 2047 ? 2047 : count;
2891
2892 BEGIN_RING(chan, tesla, NV50TCL_CB_ADDR, 1);
2893 OUT_RING (chan, (cbuf << 0) | (start << 8));
2894 BEGIN_RING(chan, tesla, NV50TCL_CB_DATA(0) | 0x40000000, nr);
2895 OUT_RINGp (chan, map, nr);
2896
2897 map += nr;
2898 start += nr;
2899 count -= nr;
2900 }
2901 }
2902
2903 static void
2904 nv50_program_validate_data(struct nv50_context *nv50, struct nv50_program *p)
2905 {
2906 struct pipe_screen *pscreen = nv50->pipe.screen;
2907
2908 if (!p->data[0] && p->immd_nr) {
2909 struct nouveau_resource *heap = nv50->screen->immd_heap[0];
2910
2911 if (nouveau_resource_alloc(heap, p->immd_nr, p, &p->data[0])) {
2912 while (heap->next && heap->size < p->immd_nr) {
2913 struct nv50_program *evict = heap->next->priv;
2914 nouveau_resource_free(&evict->data[0]);
2915 }
2916
2917 if (nouveau_resource_alloc(heap, p->immd_nr, p,
2918 &p->data[0]))
2919 assert(0);
2920 }
2921
2922 /* immediates only need to be uploaded again when freed */
2923 nv50_program_upload_data(nv50, p->immd, p->data[0]->start,
2924 p->immd_nr, NV50_CB_PMISC);
2925 }
2926
2927 assert(p->param_nr <= 512);
2928
2929 if (p->param_nr) {
2930 unsigned cb;
2931 float *map = pipe_buffer_map(pscreen, nv50->constbuf[p->type],
2932 PIPE_BUFFER_USAGE_CPU_READ);
2933
2934 if (p->type == PIPE_SHADER_VERTEX)
2935 cb = NV50_CB_PVP;
2936 else
2937 cb = NV50_CB_PFP;
2938
2939 nv50_program_upload_data(nv50, map, 0, p->param_nr, cb);
2940 pipe_buffer_unmap(pscreen, nv50->constbuf[p->type]);
2941 }
2942 }
2943
2944 static void
2945 nv50_program_validate_code(struct nv50_context *nv50, struct nv50_program *p)
2946 {
2947 struct nouveau_channel *chan = nv50->screen->base.channel;
2948 struct nouveau_grobj *tesla = nv50->screen->tesla;
2949 struct nv50_program_exec *e;
2950 struct nouveau_stateobj *so;
2951 const unsigned flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_WR;
2952 unsigned start, count, *up, *ptr;
2953 boolean upload = FALSE;
2954
2955 if (!p->bo) {
2956 nouveau_bo_new(chan->device, NOUVEAU_BO_VRAM, 0x100,
2957 p->exec_size * 4, &p->bo);
2958 upload = TRUE;
2959 }
2960
2961 if (p->data[0] && p->data[0]->start != p->data_start[0])
2962 upload = TRUE;
2963
2964 if (!upload)
2965 return;
2966
2967 for (e = p->exec_head; e; e = e->next) {
2968 unsigned ei, ci, bs;
2969
2970 if (e->param.index < 0)
2971 continue;
2972
2973 if (e->param.mask == 0) {
2974 assert(!(e->param.index & 1));
2975 /* seem to be 8 byte steps */
2976 ei = (e->param.index >> 1) + 0 /* START_ID */;
2977
2978 e->inst[0] &= 0xf0000fff;
2979 e->inst[0] |= ei << 12;
2980 continue;
2981 }
2982
2983 bs = (e->inst[1] >> 22) & 0x07;
2984 assert(bs < 2);
2985 ei = e->param.shift >> 5;
2986 ci = e->param.index;
2987 if (bs == 0)
2988 ci += p->data[bs]->start;
2989
2990 e->inst[ei] &= ~e->param.mask;
2991 e->inst[ei] |= (ci << e->param.shift);
2992 }
2993
2994 if (p->data[0])
2995 p->data_start[0] = p->data[0]->start;
2996
2997 #ifdef NV50_PROGRAM_DUMP
2998 NOUVEAU_ERR("-------\n");
2999 for (e = p->exec_head; e; e = e->next) {
3000 NOUVEAU_ERR("0x%08x\n", e->inst[0]);
3001 if (is_long(e))
3002 NOUVEAU_ERR("0x%08x\n", e->inst[1]);
3003 }
3004 #endif
3005
3006 up = ptr = MALLOC(p->exec_size * 4);
3007 for (e = p->exec_head; e; e = e->next) {
3008 *(ptr++) = e->inst[0];
3009 if (is_long(e))
3010 *(ptr++) = e->inst[1];
3011 }
3012
3013 so = so_new(4,2);
3014 so_method(so, nv50->screen->tesla, NV50TCL_CB_DEF_ADDRESS_HIGH, 3);
3015 so_reloc (so, p->bo, 0, flags | NOUVEAU_BO_HIGH, 0, 0);
3016 so_reloc (so, p->bo, 0, flags | NOUVEAU_BO_LOW, 0, 0);
3017 so_data (so, (NV50_CB_PUPLOAD << 16) | 0x0800); //(p->exec_size * 4));
3018
3019 start = 0; count = p->exec_size;
3020 while (count) {
3021 struct nouveau_channel *chan = nv50->screen->base.channel;
3022 unsigned nr;
3023
3024 so_emit(chan, so);
3025
3026 nr = MIN2(count, 2047);
3027 nr = MIN2(chan->pushbuf->remaining, nr);
3028 if (chan->pushbuf->remaining < (nr + 3)) {
3029 FIRE_RING(chan);
3030 continue;
3031 }
3032
3033 BEGIN_RING(chan, tesla, NV50TCL_CB_ADDR, 1);
3034 OUT_RING (chan, (start << 8) | NV50_CB_PUPLOAD);
3035 BEGIN_RING(chan, tesla, NV50TCL_CB_DATA(0) | 0x40000000, nr);
3036 OUT_RINGp (chan, up + start, nr);
3037
3038 start += nr;
3039 count -= nr;
3040 }
3041
3042 FREE(up);
3043 so_ref(NULL, &so);
3044 }
3045
3046 void
3047 nv50_vertprog_validate(struct nv50_context *nv50)
3048 {
3049 struct nouveau_grobj *tesla = nv50->screen->tesla;
3050 struct nv50_program *p = nv50->vertprog;
3051 struct nouveau_stateobj *so;
3052
3053 if (!p->translated) {
3054 nv50_program_validate(nv50, p);
3055 if (!p->translated)
3056 assert(0);
3057 }
3058
3059 nv50_program_validate_data(nv50, p);
3060 nv50_program_validate_code(nv50, p);
3061
3062 so = so_new(13, 2);
3063 so_method(so, tesla, NV50TCL_VP_ADDRESS_HIGH, 2);
3064 so_reloc (so, p->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD |
3065 NOUVEAU_BO_HIGH, 0, 0);
3066 so_reloc (so, p->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD |
3067 NOUVEAU_BO_LOW, 0, 0);
3068 so_method(so, tesla, NV50TCL_VP_ATTR_EN_0, 2);
3069 so_data (so, p->cfg.attr[0]);
3070 so_data (so, p->cfg.attr[1]);
3071 so_method(so, tesla, NV50TCL_VP_REG_ALLOC_RESULT, 1);
3072 so_data (so, p->cfg.high_result);
3073 so_method(so, tesla, NV50TCL_VP_RESULT_MAP_SIZE, 2);
3074 so_data (so, p->cfg.high_result); //8);
3075 so_data (so, p->cfg.high_temp);
3076 so_method(so, tesla, NV50TCL_VP_START_ID, 1);
3077 so_data (so, 0); /* program start offset */
3078 so_ref(so, &nv50->state.vertprog);
3079 so_ref(NULL, &so);
3080 }
3081
3082 void
3083 nv50_fragprog_validate(struct nv50_context *nv50)
3084 {
3085 struct nouveau_grobj *tesla = nv50->screen->tesla;
3086 struct nv50_program *p = nv50->fragprog;
3087 struct nouveau_stateobj *so;
3088
3089 if (!p->translated) {
3090 nv50_program_validate(nv50, p);
3091 if (!p->translated)
3092 assert(0);
3093 }
3094
3095 nv50_program_validate_data(nv50, p);
3096 nv50_program_validate_code(nv50, p);
3097
3098 so = so_new(64, 2);
3099 so_method(so, tesla, NV50TCL_FP_ADDRESS_HIGH, 2);
3100 so_reloc (so, p->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD |
3101 NOUVEAU_BO_HIGH, 0, 0);
3102 so_reloc (so, p->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD |
3103 NOUVEAU_BO_LOW, 0, 0);
3104 so_method(so, tesla, NV50TCL_FP_REG_ALLOC_TEMP, 1);
3105 so_data (so, p->cfg.high_temp);
3106 so_method(so, tesla, NV50TCL_FP_RESULT_COUNT, 1);
3107 so_data (so, p->cfg.high_result);
3108 so_method(so, tesla, NV50TCL_FP_CTRL_UNK19A8, 1);
3109 so_data (so, p->cfg.regs[2]);
3110 so_method(so, tesla, NV50TCL_FP_CTRL_UNK196C, 1);
3111 so_data (so, p->cfg.regs[3]);
3112 so_method(so, tesla, NV50TCL_FP_START_ID, 1);
3113 so_data (so, 0); /* program start offset */
3114 so_ref(so, &nv50->state.fragprog);
3115 so_ref(NULL, &so);
3116 }
3117
3118 static void
3119 nv50_pntc_replace(struct nv50_context *nv50, uint32_t pntc[8], unsigned base)
3120 {
3121 struct nv50_program *fp = nv50->fragprog;
3122 struct nv50_program *vp = nv50->vertprog;
3123 unsigned i, c, m = base;
3124
3125 /* XXX: This can't work correctly in all cases yet, we either
3126 * have to create TGSI_SEMANTIC_PNTC or sprite_coord_mode has
3127 * to be per FP input instead of per VP output
3128 */
3129 memset(pntc, 0, 8 * sizeof(uint32_t));
3130
3131 for (i = 0; i < fp->cfg.io_nr; i++) {
3132 uint8_t sn, si;
3133 uint8_t j = fp->cfg.io[i].id_vp, k = fp->cfg.io[i].id_fp;
3134 unsigned n = popcnt4(fp->cfg.io[i].mask);
3135
3136 if (fp->info.input_semantic_name[k] != TGSI_SEMANTIC_GENERIC) {
3137 m += n;
3138 continue;
3139 }
3140
3141 sn = vp->info.input_semantic_name[j];
3142 si = vp->info.input_semantic_index[j];
3143
3144 if (j < fp->cfg.io_nr && sn == TGSI_SEMANTIC_GENERIC) {
3145 ubyte mode =
3146 nv50->rasterizer->pipe.sprite_coord_mode[si];
3147
3148 if (mode == PIPE_SPRITE_COORD_NONE) {
3149 m += n;
3150 continue;
3151 }
3152 }
3153
3154 /* this is either PointCoord or replaced by sprite coords */
3155 for (c = 0; c < 4; c++) {
3156 if (!(fp->cfg.io[i].mask & (1 << c)))
3157 continue;
3158 pntc[m / 8] |= (c + 1) << ((m % 8) * 4);
3159 ++m;
3160 }
3161 }
3162 }
3163
3164 static int
3165 nv50_sreg4_map(uint32_t *p_map, int mid, uint32_t lin[4],
3166 struct nv50_sreg4 *fpi, struct nv50_sreg4 *vpo)
3167 {
3168 int c;
3169 uint8_t mv = vpo->mask, mf = fpi->mask, oid = vpo->hw;
3170 uint8_t *map = (uint8_t *)p_map;
3171
3172 for (c = 0; c < 4; ++c) {
3173 if (mf & 1) {
3174 if (fpi->linear == TRUE)
3175 lin[mid / 32] |= 1 << (mid % 32);
3176 map[mid++] = (mv & 1) ? oid : ((c == 3) ? 0x41 : 0x40);
3177 }
3178
3179 oid += mv & 1;
3180 mf >>= 1;
3181 mv >>= 1;
3182 }
3183
3184 return mid;
3185 }
3186
3187 void
3188 nv50_linkage_validate(struct nv50_context *nv50)
3189 {
3190 struct nouveau_grobj *tesla = nv50->screen->tesla;
3191 struct nv50_program *vp = nv50->vertprog;
3192 struct nv50_program *fp = nv50->fragprog;
3193 struct nouveau_stateobj *so;
3194 struct nv50_sreg4 dummy, *vpo;
3195 int i, n, c, m = 0;
3196 uint32_t map[16], lin[4], reg[5], pcrd[8];
3197
3198 memset(map, 0, sizeof(map));
3199 memset(lin, 0, sizeof(lin));
3200
3201 reg[1] = 0x00000004; /* low and high clip distance map ids */
3202 reg[2] = 0x00000000; /* layer index map id (disabled, GP only) */
3203 reg[3] = 0x00000000; /* point size map id & enable */
3204 reg[0] = fp->cfg.regs[0]; /* colour semantic reg */
3205 reg[4] = fp->cfg.regs[1]; /* interpolant info */
3206
3207 dummy.linear = FALSE;
3208 dummy.mask = 0xf; /* map all components of HPOS */
3209 m = nv50_sreg4_map(map, m, lin, &dummy, &vp->cfg.io[0]);
3210
3211 dummy.mask = 0x0;
3212
3213 if (vp->cfg.clpd < 0x40) {
3214 for (c = 0; c < vp->cfg.clpd_nr; ++c)
3215 map[m++] = vp->cfg.clpd + c;
3216 reg[1] = (m << 8);
3217 }
3218
3219 reg[0] |= m << 8; /* adjust BFC0 id */
3220
3221 /* if light_twoside is active, it seems FFC0_ID == BFC0_ID is bad */
3222 if (nv50->rasterizer->pipe.light_twoside) {
3223 vpo = &vp->cfg.two_side[0];
3224
3225 m = nv50_sreg4_map(map, m, lin, &fp->cfg.two_side[0], &vpo[0]);
3226 m = nv50_sreg4_map(map, m, lin, &fp->cfg.two_side[1], &vpo[1]);
3227 }
3228
3229 reg[0] += m - 4; /* adjust FFC0 id */
3230 reg[4] |= m << 8; /* set mid where 'normal' FP inputs start */
3231
3232 i = 0;
3233 if (fp->info.input_semantic_name[0] == TGSI_SEMANTIC_POSITION)
3234 i = 1;
3235 for (; i < fp->cfg.io_nr; i++) {
3236 ubyte sn = fp->info.input_semantic_name[fp->cfg.io[i].id_fp];
3237 ubyte si = fp->info.input_semantic_index[fp->cfg.io[i].id_fp];
3238
3239 n = fp->cfg.io[i].id_vp;
3240 if (n >= vp->cfg.io_nr ||
3241 vp->info.output_semantic_name[n] != sn ||
3242 vp->info.output_semantic_index[n] != si)
3243 vpo = &dummy;
3244 else
3245 vpo = &vp->cfg.io[n];
3246
3247 m = nv50_sreg4_map(map, m, lin, &fp->cfg.io[i], vpo);
3248 }
3249
3250 if (nv50->rasterizer->pipe.point_size_per_vertex) {
3251 map[m / 4] |= vp->cfg.psiz << ((m % 4) * 8);
3252 reg[3] = (m++ << 4) | 1;
3253 }
3254
3255 /* now fill the stateobj */
3256 so = so_new(64, 0);
3257
3258 n = (m + 3) / 4;
3259 so_method(so, tesla, NV50TCL_VP_RESULT_MAP_SIZE, 1);
3260 so_data (so, m);
3261 so_method(so, tesla, NV50TCL_VP_RESULT_MAP(0), n);
3262 so_datap (so, map, n);
3263
3264 so_method(so, tesla, NV50TCL_MAP_SEMANTIC_0, 4);
3265 so_datap (so, reg, 4);
3266
3267 so_method(so, tesla, NV50TCL_FP_INTERPOLANT_CTRL, 1);
3268 so_data (so, reg[4]);
3269
3270 so_method(so, tesla, 0x1540, 4);
3271 so_datap (so, lin, 4);
3272
3273 if (nv50->rasterizer->pipe.point_sprite) {
3274 nv50_pntc_replace(nv50, pcrd, (reg[4] >> 8) & 0xff);
3275
3276 so_method(so, tesla, NV50TCL_POINT_COORD_REPLACE_MAP(0), 8);
3277 so_datap (so, pcrd, 8);
3278 }
3279
3280 so_ref(so, &nv50->state.programs);
3281 so_ref(NULL, &so);
3282 }
3283
3284 void
3285 nv50_program_destroy(struct nv50_context *nv50, struct nv50_program *p)
3286 {
3287 while (p->exec_head) {
3288 struct nv50_program_exec *e = p->exec_head;
3289
3290 p->exec_head = e->next;
3291 FREE(e);
3292 }
3293 p->exec_tail = NULL;
3294 p->exec_size = 0;
3295
3296 nouveau_bo_ref(NULL, &p->bo);
3297
3298 nouveau_resource_free(&p->data[0]);
3299
3300 p->translated = 0;
3301 }