1/*
2 * Copyright 2008 Ben Skeggs
3 * Copyright 2010 Christoph Bumiller
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
19 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
20 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24#include "pipe/p_context.h"
25#include "pipe/p_defines.h"
26#include "pipe/p_state.h"
27#include "util/u_inlines.h"
28
29#include "nv50_context.h"
30
31void
32nv50_constbufs_validate(struct nv50_context *nv50)
33{
34   struct nouveau_pushbuf *push = nv50->base.pushbuf;
35   unsigned s;
36
37   for (s = 0; s < 3; ++s) {
38      unsigned p;
39
40      if (s == PIPE_SHADER_FRAGMENT)
41         p = NV50_3D_SET_PROGRAM_CB_PROGRAM_FRAGMENT;
42      else
43      if (s == PIPE_SHADER_GEOMETRY)
44         p = NV50_3D_SET_PROGRAM_CB_PROGRAM_GEOMETRY;
45      else
46         p = NV50_3D_SET_PROGRAM_CB_PROGRAM_VERTEX;
47
48      while (nv50->constbuf_dirty[s]) {
49         const int i = ffs(nv50->constbuf_dirty[s]) - 1;
50         nv50->constbuf_dirty[s] &= ~(1 << i);
51
52         if (nv50->constbuf[s][i].user) {
53            const unsigned b = NV50_CB_PVP + s;
54            unsigned start = 0;
55            unsigned words = nv50->constbuf[s][0].size / 4;
56            if (i) {
57               NOUVEAU_ERR("user constbufs only supported in slot 0\n");
58               continue;
59            }
60            if (!nv50->state.uniform_buffer_bound[s]) {
61               nv50->state.uniform_buffer_bound[s] = TRUE;
62               BEGIN_NV04(push, NV50_3D(SET_PROGRAM_CB), 1);
63               PUSH_DATA (push, (b << 12) | (i << 8) | p | 1);
64            }
65            while (words) {
66               unsigned nr;
67
68               if (!PUSH_SPACE(push, 16))
69                  break;
70               nr = PUSH_AVAIL(push);
71               assert(nr >= 16);
72               nr = MIN2(MIN2(nr - 3, words), NV04_PFIFO_MAX_PACKET_LEN);
73
74               BEGIN_NV04(push, NV50_3D(CB_ADDR), 1);
75               PUSH_DATA (push, (start << 8) | b);
76               BEGIN_NI04(push, NV50_3D(CB_DATA(0)), nr);
77               PUSH_DATAp(push, &nv50->constbuf[s][0].u.data[start * 4], nr);
78
79               start += nr;
80               words -= nr;
81            }
82         } else {
83            struct nv04_resource *res =
84               nv04_resource(nv50->constbuf[s][i].u.buf);
85            if (res) {
86               /* TODO: allocate persistent bindings */
87               const unsigned b = s * 16 + i;
88
89               assert(nouveau_resource_mapped_by_gpu(&res->base));
90
91               BEGIN_NV04(push, NV50_3D(CB_DEF_ADDRESS_HIGH), 3);
92               PUSH_DATAh(push, res->address + nv50->constbuf[s][i].offset);
93               PUSH_DATA (push, res->address + nv50->constbuf[s][i].offset);
94               PUSH_DATA (push, (b << 16) |
95                          (nv50->constbuf[s][i].size & 0xffff));
96               BEGIN_NV04(push, NV50_3D(SET_PROGRAM_CB), 1);
97               PUSH_DATA (push, (b << 12) | (i << 8) | p | 1);
98
99               BCTX_REFN(nv50->bufctx_3d, CB(s, i), res, RD);
100            } else {
101               BEGIN_NV04(push, NV50_3D(SET_PROGRAM_CB), 1);
102               PUSH_DATA (push, (i << 8) | p | 0);
103            }
104            if (i == 0)
105               nv50->state.uniform_buffer_bound[s] = FALSE;
106         }
107      }
108   }
109}
110
111static boolean
112nv50_program_validate(struct nv50_context *nv50, struct nv50_program *prog)
113{
114   if (!prog->translated) {
115      prog->translated = nv50_program_translate(
116         prog, nv50->screen->base.device->chipset);
117      if (!prog->translated)
118         return FALSE;
119   } else
120   if (prog->mem)
121      return TRUE;
122
123   return nv50_program_upload_code(nv50, prog);
124}
125
126static INLINE void
127nv50_program_update_context_state(struct nv50_context *nv50,
128                                  struct nv50_program *prog, int stage)
129{
130   const unsigned flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
131
132   if (prog && prog->tls_space) {
133      if (nv50->state.new_tls_space)
134         nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_TLS);
135      if (!nv50->state.tls_required || nv50->state.new_tls_space)
136         BCTX_REFN_bo(nv50->bufctx_3d, TLS, flags, nv50->screen->tls_bo);
137      nv50->state.new_tls_space = FALSE;
138      nv50->state.tls_required |= 1 << stage;
139   } else {
140      if (nv50->state.tls_required == (1 << stage))
141         nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_TLS);
142      nv50->state.tls_required &= ~(1 << stage);
143   }
144}
145
146void
147nv50_vertprog_validate(struct nv50_context *nv50)
148{
149   struct nouveau_pushbuf *push = nv50->base.pushbuf;
150   struct nv50_program *vp = nv50->vertprog;
151
152   if (!nv50_program_validate(nv50, vp))
153         return;
154   nv50_program_update_context_state(nv50, vp, 0);
155
156   BEGIN_NV04(push, NV50_3D(VP_ATTR_EN(0)), 2);
157   PUSH_DATA (push, vp->vp.attrs[0]);
158   PUSH_DATA (push, vp->vp.attrs[1]);
159   BEGIN_NV04(push, NV50_3D(VP_REG_ALLOC_RESULT), 1);
160   PUSH_DATA (push, vp->max_out);
161   BEGIN_NV04(push, NV50_3D(VP_REG_ALLOC_TEMP), 1);
162   PUSH_DATA (push, vp->max_gpr);
163   BEGIN_NV04(push, NV50_3D(VP_START_ID), 1);
164   PUSH_DATA (push, vp->code_base);
165}
166
167void
168nv50_fragprog_validate(struct nv50_context *nv50)
169{
170   struct nouveau_pushbuf *push = nv50->base.pushbuf;
171   struct nv50_program *fp = nv50->fragprog;
172
173   if (!nv50_program_validate(nv50, fp))
174         return;
175   nv50_program_update_context_state(nv50, fp, 1);
176
177   BEGIN_NV04(push, NV50_3D(FP_REG_ALLOC_TEMP), 1);
178   PUSH_DATA (push, fp->max_gpr);
179   BEGIN_NV04(push, NV50_3D(FP_RESULT_COUNT), 1);
180   PUSH_DATA (push, fp->max_out);
181   BEGIN_NV04(push, NV50_3D(FP_CONTROL), 1);
182   PUSH_DATA (push, fp->fp.flags[0]);
183   BEGIN_NV04(push, NV50_3D(FP_CTRL_UNK196C), 1);
184   PUSH_DATA (push, fp->fp.flags[1]);
185   BEGIN_NV04(push, NV50_3D(FP_START_ID), 1);
186   PUSH_DATA (push, fp->code_base);
187}
188
189void
190nv50_gmtyprog_validate(struct nv50_context *nv50)
191{
192   struct nouveau_pushbuf *push = nv50->base.pushbuf;
193   struct nv50_program *gp = nv50->gmtyprog;
194
195   if (gp) {
196      BEGIN_NV04(push, NV50_3D(GP_REG_ALLOC_TEMP), 1);
197      PUSH_DATA (push, gp->max_gpr);
198      BEGIN_NV04(push, NV50_3D(GP_REG_ALLOC_RESULT), 1);
199      PUSH_DATA (push, gp->max_out);
200      BEGIN_NV04(push, NV50_3D(GP_OUTPUT_PRIMITIVE_TYPE), 1);
201      PUSH_DATA (push, gp->gp.prim_type);
202      BEGIN_NV04(push, NV50_3D(GP_VERTEX_OUTPUT_COUNT), 1);
203      PUSH_DATA (push, gp->gp.vert_count);
204      BEGIN_NV04(push, NV50_3D(GP_START_ID), 1);
205      PUSH_DATA (push, gp->code_base);
206
207      nv50->state.prim_size = gp->gp.prim_type; /* enum matches vertex count */
208   }
209   nv50_program_update_context_state(nv50, gp, 2);
210
211   /* GP_ENABLE is updated in linkage validation */
212}
213
214static void
215nv50_sprite_coords_validate(struct nv50_context *nv50)
216{
217   struct nouveau_pushbuf *push = nv50->base.pushbuf;
218   uint32_t pntc[8], mode;
219   struct nv50_program *fp = nv50->fragprog;
220   unsigned i, c;
221   unsigned m = (nv50->state.interpolant_ctrl >> 8) & 0xff;
222
223   if (!nv50->rast->pipe.point_quad_rasterization) {
224      if (nv50->state.point_sprite) {
225         BEGIN_NV04(push, NV50_3D(POINT_COORD_REPLACE_MAP(0)), 8);
226         for (i = 0; i < 8; ++i)
227            PUSH_DATA(push, 0);
228
229         nv50->state.point_sprite = FALSE;
230      }
231      return;
232   } else {
233      nv50->state.point_sprite = TRUE;
234   }
235
236   memset(pntc, 0, sizeof(pntc));
237
238   for (i = 0; i < fp->in_nr; i++) {
239      unsigned n = util_bitcount(fp->in[i].mask);
240
241      if (fp->in[i].sn != TGSI_SEMANTIC_GENERIC) {
242         m += n;
243         continue;
244      }
245      if (!(nv50->rast->pipe.sprite_coord_enable & (1 << fp->in[i].si))) {
246         m += n;
247         continue;
248      }
249
250      for (c = 0; c < 4; ++c) {
251         if (fp->in[i].mask & (1 << c)) {
252            pntc[m / 8] |= (c + 1) << ((m % 8) * 4);
253            ++m;
254         }
255      }
256   }
257
258   if (nv50->rast->pipe.sprite_coord_mode == PIPE_SPRITE_COORD_LOWER_LEFT)
259      mode = 0x00;
260   else
261      mode = 0x10;
262
263   BEGIN_NV04(push, NV50_3D(POINT_SPRITE_CTRL), 1);
264   PUSH_DATA (push, mode);
265
266   BEGIN_NV04(push, NV50_3D(POINT_COORD_REPLACE_MAP(0)), 8);
267   PUSH_DATAp(push, pntc, 8);
268}
269
270/* Validate state derived from shaders and the rasterizer cso. */
271void
272nv50_validate_derived_rs(struct nv50_context *nv50)
273{
274   struct nouveau_pushbuf *push = nv50->base.pushbuf;
275   uint32_t color, psize;
276
277   nv50_sprite_coords_validate(nv50);
278
279   if (nv50->state.rasterizer_discard != nv50->rast->pipe.rasterizer_discard) {
280      nv50->state.rasterizer_discard = nv50->rast->pipe.rasterizer_discard;
281      BEGIN_NV04(push, NV50_3D(RASTERIZE_ENABLE), 1);
282      PUSH_DATA (push, !nv50->rast->pipe.rasterizer_discard);
283   }
284
285   if (nv50->dirty & NV50_NEW_FRAGPROG)
286      return;
287   psize = nv50->state.semantic_psize & ~NV50_3D_SEMANTIC_PTSZ_PTSZ_EN__MASK;
288   color = nv50->state.semantic_color & ~NV50_3D_SEMANTIC_COLOR_CLMP_EN;
289
290   if (nv50->rast->pipe.clamp_vertex_color)
291      color |= NV50_3D_SEMANTIC_COLOR_CLMP_EN;
292
293   if (color != nv50->state.semantic_color) {
294      nv50->state.semantic_color = color;
295      BEGIN_NV04(push, NV50_3D(SEMANTIC_COLOR), 1);
296      PUSH_DATA (push, color);
297   }
298
299   if (nv50->rast->pipe.point_size_per_vertex)
300      psize |= NV50_3D_SEMANTIC_PTSZ_PTSZ_EN__MASK;
301
302   if (psize != nv50->state.semantic_psize) {
303      nv50->state.semantic_psize = psize;
304      BEGIN_NV04(push, NV50_3D(SEMANTIC_PTSZ), 1);
305      PUSH_DATA (push, psize);
306   }
307}
308
309static int
310nv50_vec4_map(uint8_t *map, int mid, uint32_t lin[4],
311              struct nv50_varying *in, struct nv50_varying *out)
312{
313   int c;
314   uint8_t mv = out->mask, mf = in->mask, oid = out->hw;
315
316   for (c = 0; c < 4; ++c) {
317      if (mf & 1) {
318         if (in->linear)
319            lin[mid / 32] |= 1 << (mid % 32);
320         if (mv & 1)
321            map[mid] = oid;
322         else
323         if (c == 3)
324            map[mid] |= 1;
325         ++mid;
326      }
327
328      oid += mv & 1;
329      mf >>= 1;
330      mv >>= 1;
331   }
332
333   return mid;
334}
335
336void
337nv50_fp_linkage_validate(struct nv50_context *nv50)
338{
339   struct nouveau_pushbuf *push = nv50->base.pushbuf;
340   struct nv50_program *vp = nv50->gmtyprog ? nv50->gmtyprog : nv50->vertprog;
341   struct nv50_program *fp = nv50->fragprog;
342   struct nv50_varying dummy;
343   int i, n, c, m;
344   uint32_t primid = 0;
345   uint32_t psiz = 0x000;
346   uint32_t interp = fp->fp.interp;
347   uint32_t colors = fp->fp.colors;
348   uint32_t lin[4];
349   uint8_t map[64];
350   uint8_t so_map[64];
351
352   if (!(nv50->dirty & (NV50_NEW_VERTPROG |
353                        NV50_NEW_FRAGPROG |
354                        NV50_NEW_GMTYPROG))) {
355      uint8_t bfc, ffc;
356      ffc = (nv50->state.semantic_color & NV50_3D_SEMANTIC_COLOR_FFC0_ID__MASK);
357      bfc = (nv50->state.semantic_color & NV50_3D_SEMANTIC_COLOR_BFC0_ID__MASK)
358         >> 8;
359      if (nv50->rast->pipe.light_twoside == ((ffc == bfc) ? 0 : 1))
360         return;
361   }
362
363   memset(lin, 0x00, sizeof(lin));
364
365   /* XXX: in buggy-endian mode, is the first element of map (u32)0x000000xx
366    *  or is it the first byte ?
367    */
368   memset(map, nv50->gmtyprog ? 0x80 : 0x40, sizeof(map));
369
370   dummy.mask = 0xf; /* map all components of HPOS */
371   dummy.linear = 0;
372   m = nv50_vec4_map(map, 0, lin, &dummy, &vp->out[0]);
373
374   for (c = 0; c < vp->vp.clpd_nr; ++c)
375      map[m++] = vp->vp.clpd[c / 4] + (c % 4);
376
377   colors |= m << 8; /* adjust BFC0 id */
378
379   dummy.mask = 0x0;
380
381   /* if light_twoside is active, FFC0_ID == BFC0_ID is invalid */
382   if (nv50->rast->pipe.light_twoside) {
383      for (i = 0; i < 2; ++i) {
384         n = vp->vp.bfc[i];
385         if (fp->vp.bfc[i] >= fp->in_nr)
386            continue;
387         m = nv50_vec4_map(map, m, lin, &fp->in[fp->vp.bfc[i]],
388                           (n < vp->out_nr) ? &vp->out[n] : &dummy);
389      }
390   }
391   colors += m - 4; /* adjust FFC0 id */
392   interp |= m << 8; /* set map id where 'normal' FP inputs start */
393
394   for (i = 0; i < fp->in_nr; ++i) {
395      for (n = 0; n < vp->out_nr; ++n)
396         if (vp->out[n].sn == fp->in[i].sn &&
397             vp->out[n].si == fp->in[i].si)
398            break;
399      m = nv50_vec4_map(map, m, lin,
400                        &fp->in[i], (n < vp->out_nr) ? &vp->out[n] : &dummy);
401   }
402
403   /* PrimitiveID either is replaced by the system value, or
404    * written by the geometry shader into an output register
405    */
406   if (fp->gp.primid < 0x80) {
407      primid = m;
408      map[m++] = vp->gp.primid;
409   }
410
411   if (nv50->rast->pipe.point_size_per_vertex) {
412      psiz = (m << 4) | 1;
413      map[m++] = vp->vp.psiz;
414   }
415
416   if (nv50->rast->pipe.clamp_vertex_color)
417      colors |= NV50_3D_SEMANTIC_COLOR_CLMP_EN;
418
419   if (unlikely(vp->so)) {
420      /* Slot i in STRMOUT_MAP specifies the offset where slot i in RESULT_MAP
421       * gets written.
422       *
423       * TODO:
424       * Inverting vp->so->map (output -> offset) would probably speed this up.
425       */
426      memset(so_map, 0, sizeof(so_map));
427      for (i = 0; i < vp->so->map_size; ++i) {
428         if (vp->so->map[i] == 0xff)
429            continue;
430         for (c = 0; c < m; ++c)
431            if (map[c] == vp->so->map[i] && !so_map[c])
432               break;
433         if (c == m) {
434            c = m;
435            map[m++] = vp->so->map[i];
436         }
437         so_map[c] = 0x80 | i;
438      }
439      for (c = m; c & 3; ++c)
440         so_map[c] = 0;
441   }
442
443   n = (m + 3) / 4;
444   assert(m <= 64);
445
446   if (unlikely(nv50->gmtyprog)) {
447      BEGIN_NV04(push, NV50_3D(GP_RESULT_MAP_SIZE), 1);
448      PUSH_DATA (push, m);
449      BEGIN_NV04(push, NV50_3D(GP_RESULT_MAP(0)), n);
450      PUSH_DATAp(push, map, n);
451   } else {
452      BEGIN_NV04(push, NV50_3D(VP_GP_BUILTIN_ATTR_EN), 1);
453      PUSH_DATA (push, vp->vp.attrs[2]);
454
455      BEGIN_NV04(push, NV50_3D(SEMANTIC_PRIM_ID), 1);
456      PUSH_DATA (push, primid);
457
458      BEGIN_NV04(push, NV50_3D(VP_RESULT_MAP_SIZE), 1);
459      PUSH_DATA (push, m);
460      BEGIN_NV04(push, NV50_3D(VP_RESULT_MAP(0)), n);
461      PUSH_DATAp(push, map, n);
462   }
463
464   BEGIN_NV04(push, NV50_3D(SEMANTIC_COLOR), 4);
465   PUSH_DATA (push, colors);
466   PUSH_DATA (push, (vp->vp.clpd_nr << 8) | 4);
467   PUSH_DATA (push, 0);
468   PUSH_DATA (push, psiz);
469
470   BEGIN_NV04(push, NV50_3D(FP_INTERPOLANT_CTRL), 1);
471   PUSH_DATA (push, interp);
472
473   nv50->state.interpolant_ctrl = interp;
474
475   nv50->state.semantic_color = colors;
476   nv50->state.semantic_psize = psiz;
477
478   BEGIN_NV04(push, NV50_3D(NOPERSPECTIVE_BITMAP(0)), 4);
479   PUSH_DATAp(push, lin, 4);
480
481   BEGIN_NV04(push, NV50_3D(GP_ENABLE), 1);
482   PUSH_DATA (push, nv50->gmtyprog ? 1 : 0);
483
484   if (vp->so) {
485      BEGIN_NV04(push, NV50_3D(STRMOUT_MAP(0)), n);
486      PUSH_DATAp(push, so_map, n);
487   }
488}
489
490static int
491nv50_vp_gp_mapping(uint8_t *map, int m,
492                   struct nv50_program *vp, struct nv50_program *gp)
493{
494   int i, j, c;
495
496   for (i = 0; i < gp->in_nr; ++i) {
497      uint8_t oid = 0, mv = 0, mg = gp->in[i].mask;
498
499      for (j = 0; j < vp->out_nr; ++j) {
500         if (vp->out[j].sn == gp->in[i].sn &&
501             vp->out[j].si == gp->in[i].si) {
502            mv = vp->out[j].mask;
503            oid = vp->out[j].hw;
504            break;
505         }
506      }
507
508      for (c = 0; c < 4; ++c, mv >>= 1, mg >>= 1) {
509         if (mg & mv & 1)
510            map[m++] = oid;
511         else
512         if (mg & 1)
513            map[m++] = (c == 3) ? 0x41 : 0x40;
514         oid += mv & 1;
515      }
516   }
517   return m;
518}
519
520void
521nv50_gp_linkage_validate(struct nv50_context *nv50)
522{
523   struct nouveau_pushbuf *push = nv50->base.pushbuf;
524   struct nv50_program *vp = nv50->vertprog;
525   struct nv50_program *gp = nv50->gmtyprog;
526   int m = 0;
527   int n;
528   uint8_t map[64];
529
530   if (!gp)
531      return;
532   memset(map, 0, sizeof(map));
533
534   m = nv50_vp_gp_mapping(map, m, vp, gp);
535
536   n = (m + 3) / 4;
537
538   BEGIN_NV04(push, NV50_3D(VP_GP_BUILTIN_ATTR_EN), 1);
539   PUSH_DATA (push, vp->vp.attrs[2] | gp->vp.attrs[2]);
540
541   BEGIN_NV04(push, NV50_3D(VP_RESULT_MAP_SIZE), 1);
542   PUSH_DATA (push, m);
543   BEGIN_NV04(push, NV50_3D(VP_RESULT_MAP(0)), n);
544   PUSH_DATAp(push, map, n);
545}
546
547void
548nv50_stream_output_validate(struct nv50_context *nv50)
549{
550   struct nouveau_pushbuf *push = nv50->base.pushbuf;
551   struct nv50_stream_output_state *so;
552   uint32_t ctrl;
553   unsigned i;
554   unsigned prims = ~0;
555
556   so = nv50->gmtyprog ? nv50->gmtyprog->so : nv50->vertprog->so;
557
558   BEGIN_NV04(push, NV50_3D(STRMOUT_ENABLE), 1);
559   PUSH_DATA (push, 0);
560   if (!so || !nv50->num_so_targets) {
561      if (nv50->screen->base.class_3d < NVA0_3D_CLASS) {
562         BEGIN_NV04(push, NV50_3D(STRMOUT_PRIMITIVE_LIMIT), 1);
563         PUSH_DATA (push, 0);
564      }
565      BEGIN_NV04(push, NV50_3D(STRMOUT_PARAMS_LATCH), 1);
566      PUSH_DATA (push, 1);
567      return;
568   }
569
570   /* previous TFB needs to complete */
571   if (nv50->screen->base.class_3d < NVA0_3D_CLASS) {
572      BEGIN_NV04(push, SUBC_3D(NV50_GRAPH_SERIALIZE), 1);
573      PUSH_DATA (push, 0);
574   }
575
576   ctrl = so->ctrl;
577   if (nv50->screen->base.class_3d >= NVA0_3D_CLASS)
578      ctrl |= NVA0_3D_STRMOUT_BUFFERS_CTRL_LIMIT_MODE_OFFSET;
579
580   BEGIN_NV04(push, NV50_3D(STRMOUT_BUFFERS_CTRL), 1);
581   PUSH_DATA (push, ctrl);
582
583   nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_SO);
584
585   for (i = 0; i < nv50->num_so_targets; ++i) {
586      struct nv50_so_target *targ = nv50_so_target(nv50->so_target[i]);
587      struct nv04_resource *buf = nv04_resource(targ->pipe.buffer);
588
589      const unsigned n = nv50->screen->base.class_3d >= NVA0_3D_CLASS ? 4 : 3;
590
591      if (n == 4 && !targ->clean)
592         nv84_query_fifo_wait(push, targ->pq);
593      BEGIN_NV04(push, NV50_3D(STRMOUT_ADDRESS_HIGH(i)), n);
594      PUSH_DATAh(push, buf->address + targ->pipe.buffer_offset);
595      PUSH_DATA (push, buf->address + targ->pipe.buffer_offset);
596      PUSH_DATA (push, so->num_attribs[i]);
597      if (n == 4) {
598         PUSH_DATA(push, targ->pipe.buffer_size);
599
600         BEGIN_NV04(push, NVA0_3D(STRMOUT_OFFSET(i)), 1);
601         if (!targ->clean) {
602            assert(targ->pq);
603            nv50_query_pushbuf_submit(push, targ->pq, 0x4);
604         } else {
605            PUSH_DATA(push, 0);
606            targ->clean = FALSE;
607         }
608      } else {
609         const unsigned limit = targ->pipe.buffer_size /
610            (so->stride[i] * nv50->state.prim_size);
611         prims = MIN2(prims, limit);
612      }
613      BCTX_REFN(nv50->bufctx_3d, SO, buf, WR);
614   }
615   if (prims != ~0) {
616      BEGIN_NV04(push, NV50_3D(STRMOUT_PRIMITIVE_LIMIT), 1);
617      PUSH_DATA (push, prims);
618   }
619   BEGIN_NV04(push, NV50_3D(STRMOUT_PARAMS_LATCH), 1);
620   PUSH_DATA (push, 1);
621   BEGIN_NV04(push, NV50_3D(STRMOUT_ENABLE), 1);
622   PUSH_DATA (push, 1);
623}
624