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60f56dfc KM |
1 | /* |
2 | * Copyright (c) 1988 University of Utah. | |
3 | * Copyright (c) 1990 The Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * the Systems Programming Group of the University of Utah Computer | |
8 | * Science Department. | |
9 | * | |
10 | * %sccs.include.redist.c% | |
11 | * | |
12 | * from: Utah $Hdr: grf.c 1.28 89/08/14$ | |
13 | * | |
14 | * @(#)grf.c 7.1 (Berkeley) %G% | |
15 | */ | |
16 | ||
17 | /* | |
18 | * Graphics display driver for the HP300. | |
19 | * This is the hardware-independent portion of the driver. | |
20 | * Hardware access is through the grfdev routines below. | |
21 | */ | |
22 | ||
23 | #include "grf.h" | |
24 | #if NGRF > 0 | |
25 | ||
26 | #include "param.h" | |
27 | #include "user.h" | |
28 | #include "proc.h" | |
29 | #include "ioctl.h" | |
30 | #include "file.h" | |
31 | #include "mapmem.h" | |
32 | #include "malloc.h" | |
33 | ||
34 | #include "device.h" | |
35 | #include "grfioctl.h" | |
36 | #include "grfvar.h" | |
37 | ||
38 | #include "machine/cpu.h" | |
39 | ||
40 | #ifdef HPUXCOMPAT | |
41 | #include "../hpux/hpux.h" | |
42 | #endif | |
43 | ||
44 | #include "ite.h" | |
45 | #if NITE == 0 | |
46 | #define iteon(u,f) | |
47 | #define iteoff(u,f) | |
48 | #endif | |
49 | ||
50 | int grfprobe(); | |
51 | int tc_init(), tc_mode(); | |
52 | int gb_init(), gb_mode(); | |
53 | int rb_init(), rb_mode(); | |
54 | int dv_init(), dv_mode(); | |
55 | ||
56 | struct grfdev grfdev[] = { | |
57 | GID_TOPCAT, GRFBOBCAT, tc_init, tc_mode, | |
58 | "topcat", | |
59 | GID_GATORBOX, GRFGATOR, gb_init, gb_mode, | |
60 | "gatorbox", | |
61 | GID_RENAISSANCE,GRFRBOX, rb_init, rb_mode, | |
62 | "renaissance", | |
63 | GID_LRCATSEYE, GRFCATSEYE, tc_init, tc_mode, | |
64 | "lo-res catseye", | |
65 | GID_HRCCATSEYE, GRFCATSEYE, tc_init, tc_mode, | |
66 | "hi-res catseye", | |
67 | GID_HRMCATSEYE, GRFCATSEYE, tc_init, tc_mode, | |
68 | "hi-res catseye", | |
69 | GID_DAVINCI, GRFDAVINCI, dv_init, dv_mode, | |
70 | "davinci", | |
71 | }; | |
72 | int ngrfdev = sizeof(grfdev) / sizeof(grfdev[0]); | |
73 | ||
74 | struct driver grfdriver = { grfprobe, "grf" }; | |
75 | struct grf_softc grf_softc[NGRF]; | |
76 | ||
77 | #ifdef MAPMEM | |
78 | int grfexit(); | |
79 | struct mapmemops grfops = { (int (*)())0, (int (*)())0, grfexit, grfexit }; | |
80 | #ifdef HPUXCOMPAT | |
81 | struct mapmemops grflckops = { (int (*)())0, (int (*)())0, grfexit, grfexit }; | |
82 | struct mapmemops grfiomops = { (int (*)())0, (int (*)())0, grfexit, grfexit }; | |
83 | #endif | |
84 | #endif | |
85 | ||
86 | #ifdef DEBUG | |
87 | int grfdebug = 0; | |
88 | #define GDB_DEVNO 0x01 | |
89 | #define GDB_MMAP 0x02 | |
90 | #define GDB_IOMAP 0x04 | |
91 | #define GDB_LOCK 0x08 | |
92 | #endif | |
93 | ||
94 | /* | |
95 | * XXX: called from ite console init routine. | |
96 | * Does just what configure will do later but without printing anything. | |
97 | */ | |
98 | grfconfig() | |
99 | { | |
100 | register caddr_t addr; | |
101 | register struct hp_hw *hw; | |
102 | register struct hp_device *hd, *nhd; | |
103 | ||
104 | for (hw = sc_table; hw->hw_type; hw++) { | |
105 | if (hw->hw_type != BITMAP) | |
106 | continue; | |
107 | /* | |
108 | * Found one, now match up with a logical unit number | |
109 | */ | |
110 | nhd = NULL; | |
111 | addr = hw->hw_addr; | |
112 | for (hd = hp_dinit; hd->hp_driver; hd++) { | |
113 | if (hd->hp_driver != &grfdriver || hd->hp_alive) | |
114 | continue; | |
115 | /* | |
116 | * Wildcarded. If first, remember as possible match. | |
117 | */ | |
118 | if (hd->hp_addr == NULL) { | |
119 | if (nhd == NULL) | |
120 | nhd = hd; | |
121 | continue; | |
122 | } | |
123 | /* | |
124 | * Not wildcarded. | |
125 | * If exact match done searching, else keep looking. | |
126 | */ | |
127 | if ((caddr_t)sctoaddr(hd->hp_addr) == addr) { | |
128 | nhd = hd; | |
129 | break; | |
130 | } | |
131 | } | |
132 | /* | |
133 | * Found a match, initialize | |
134 | */ | |
135 | if (nhd && grfinit(addr, nhd->hp_unit)) { | |
136 | nhd->hp_addr = addr; | |
137 | } | |
138 | } | |
139 | } | |
140 | ||
141 | /* | |
142 | * Normal init routine called by configure() code | |
143 | */ | |
144 | grfprobe(hd) | |
145 | struct hp_device *hd; | |
146 | { | |
147 | struct grf_softc *gp = &grf_softc[hd->hp_unit]; | |
148 | ||
149 | if ((gp->g_flags & GF_ALIVE) == 0 && | |
150 | !grfinit(hd->hp_addr, hd->hp_unit)) | |
151 | return(0); | |
152 | printf("grf%d: %d x %d ", hd->hp_unit, | |
153 | gp->g_display.gd_dwidth, gp->g_display.gd_dheight); | |
154 | if (gp->g_display.gd_colors == 2) | |
155 | printf("monochrome"); | |
156 | else | |
157 | printf("%d color", gp->g_display.gd_colors); | |
158 | printf(" %s display\n", grfdev[gp->g_type].gd_desc); | |
159 | return(1); | |
160 | } | |
161 | ||
162 | grfinit(addr, unit) | |
163 | caddr_t addr; | |
164 | { | |
165 | struct grf_softc *gp = &grf_softc[unit]; | |
166 | struct grfreg *gr; | |
167 | register struct grfdev *gd; | |
168 | ||
169 | gr = (struct grfreg *) addr; | |
170 | if (gr->gr_id != GRFHWID) | |
171 | return(0); | |
172 | for (gd = grfdev; gd < &grfdev[ngrfdev]; gd++) | |
173 | if (gd->gd_hardid == gr->gr_id2) | |
174 | break; | |
175 | if (gd < &grfdev[ngrfdev] && (*gd->gd_init)(gp, addr)) { | |
176 | gp->g_display.gd_id = gd->gd_softid; | |
177 | gp->g_type = gd - grfdev; | |
178 | gp->g_flags = GF_ALIVE; | |
179 | return(1); | |
180 | } | |
181 | return(0); | |
182 | } | |
183 | ||
184 | /*ARGSUSED*/ | |
185 | grfopen(dev, flags) | |
186 | dev_t dev; | |
187 | { | |
188 | int unit = GRFUNIT(dev); | |
189 | register struct grf_softc *gp = &grf_softc[unit]; | |
190 | int error = 0; | |
191 | ||
192 | if (unit >= NGRF || (gp->g_flags & GF_ALIVE) == 0) | |
193 | return(ENXIO); | |
194 | if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE)) | |
195 | return(EBUSY); | |
196 | #ifdef HPUXCOMPAT | |
197 | /* | |
198 | * XXX: cannot handle both HPUX and BSD processes at the same time | |
199 | */ | |
200 | if (u.u_procp->p_flag & SHPUX) | |
201 | if (gp->g_flags & GF_BSDOPEN) | |
202 | return(EBUSY); | |
203 | else | |
204 | gp->g_flags |= GF_HPUXOPEN; | |
205 | else | |
206 | if (gp->g_flags & GF_HPUXOPEN) | |
207 | return(EBUSY); | |
208 | else | |
209 | gp->g_flags |= GF_BSDOPEN; | |
210 | #endif | |
211 | /* | |
212 | * First open. | |
213 | * XXX: always put in graphics mode. | |
214 | */ | |
215 | error = 0; | |
216 | if ((gp->g_flags & GF_OPEN) == 0) { | |
217 | gp->g_flags |= GF_OPEN; | |
218 | error = grfon(dev); | |
219 | } | |
220 | return(error); | |
221 | } | |
222 | ||
223 | /*ARGSUSED*/ | |
224 | grfclose(dev, flags) | |
225 | dev_t dev; | |
226 | { | |
227 | register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
228 | ||
229 | (void) grfoff(dev); | |
230 | (void) grfunlock(gp); | |
231 | gp->g_flags &= GF_ALIVE; | |
232 | return(0); | |
233 | } | |
234 | ||
235 | /*ARGSUSED*/ | |
236 | grfioctl(dev, cmd, data, flag) | |
237 | dev_t dev; | |
238 | caddr_t data; | |
239 | { | |
240 | register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
241 | int error; | |
242 | ||
243 | #ifdef HPUXCOMPAT | |
244 | if (u.u_procp->p_flag & SHPUX) | |
245 | return(hpuxgrfioctl(dev, cmd, data, flag)); | |
246 | #endif | |
247 | error = 0; | |
248 | switch (cmd) { | |
249 | ||
250 | /* XXX: compatibility hack */ | |
251 | case OGRFIOCGINFO: | |
252 | bcopy((caddr_t)&gp->g_display, data, sizeof(struct ogrfinfo)); | |
253 | break; | |
254 | ||
255 | case GRFIOCGINFO: | |
256 | bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)); | |
257 | break; | |
258 | ||
259 | case GRFIOCON: | |
260 | error = grfon(dev); | |
261 | break; | |
262 | ||
263 | case GRFIOCOFF: | |
264 | error = grfoff(dev); | |
265 | break; | |
266 | ||
267 | #ifdef MAPMEM | |
268 | case GRFIOCMAP: | |
269 | error = grfmmap(dev, (caddr_t *)data); | |
270 | break; | |
271 | ||
272 | case GRFIOCUNMAP: | |
273 | error = grfunmmap(dev, *(caddr_t *)data); | |
274 | break; | |
275 | #endif | |
276 | ||
277 | default: | |
278 | error = EINVAL; | |
279 | break; | |
280 | ||
281 | } | |
282 | return(error); | |
283 | } | |
284 | ||
285 | /*ARGSUSED*/ | |
286 | grfselect(dev, rw) | |
287 | dev_t dev; | |
288 | { | |
289 | if (rw == FREAD) | |
290 | return(0); | |
291 | return(1); | |
292 | } | |
293 | ||
294 | grflock(gp, block) | |
295 | register struct grf_softc *gp; | |
296 | int block; | |
297 | { | |
298 | #ifdef DEBUG | |
299 | if (grfdebug & GDB_LOCK) | |
300 | printf("grflock(%d): dev %x flags %x lockpid %x\n", | |
301 | u.u_procp->p_pid, gp-grf_softc, gp->g_flags, | |
302 | gp->g_lockp ? gp->g_lockp->p_pid : -1); | |
303 | #endif | |
304 | #ifdef HPUXCOMPAT | |
305 | if (gp->g_pid) { | |
306 | #ifdef DEBUG | |
307 | if (grfdebug & GDB_LOCK) | |
308 | printf(" lock[0] %d lockslot %d lock[lockslot] %d\n", | |
309 | gp->g_locks[0], gp->g_lockpslot, | |
310 | gp->g_locks[gp->g_lockpslot]); | |
311 | #endif | |
312 | gp->g_locks[0] = 0; | |
313 | if (gp->g_locks[gp->g_lockpslot] == 0) { | |
314 | gp->g_lockp = NULL; | |
315 | gp->g_lockpslot = 0; | |
316 | } | |
317 | } | |
318 | #endif | |
319 | if (gp->g_lockp) { | |
320 | if (gp->g_lockp == u.u_procp) | |
321 | return(EBUSY); | |
322 | if (!block) | |
323 | return(EAGAIN); | |
324 | do { | |
325 | gp->g_flags |= GF_WANTED; | |
326 | sleep((caddr_t)&gp->g_flags, PZERO+1); | |
327 | } while (gp->g_lockp); | |
328 | } | |
329 | gp->g_lockp = u.u_procp; | |
330 | #ifdef HPUXCOMPAT | |
331 | if (gp->g_pid) { | |
332 | int slot = grffindpid(gp); | |
333 | #ifdef DEBUG | |
334 | if (grfdebug & GDB_LOCK) | |
335 | printf(" slot %d\n", slot); | |
336 | #endif | |
337 | gp->g_lockpslot = gp->g_locks[0] = slot; | |
338 | gp->g_locks[slot] = 1; | |
339 | } | |
340 | #endif | |
341 | return(0); | |
342 | } | |
343 | ||
344 | grfunlock(gp) | |
345 | register struct grf_softc *gp; | |
346 | { | |
347 | #ifdef DEBUG | |
348 | if (grfdebug & GDB_LOCK) | |
349 | printf("grfunlock(%d): dev %x flags %x lockpid %d\n", | |
350 | u.u_procp->p_pid, gp-grf_softc, gp->g_flags, | |
351 | gp->g_lockp ? gp->g_lockp->p_pid : -1); | |
352 | #endif | |
353 | if (gp->g_lockp != u.u_procp) | |
354 | return(EBUSY); | |
355 | #ifdef HPUXCOMPAT | |
356 | if (gp->g_pid) { | |
357 | #ifdef DEBUG | |
358 | if (grfdebug & GDB_LOCK) | |
359 | printf(" lock[0] %d lockslot %d lock[lockslot] %d\n", | |
360 | gp->g_locks[0], gp->g_lockpslot, | |
361 | gp->g_locks[gp->g_lockpslot]); | |
362 | #endif | |
363 | gp->g_locks[gp->g_lockpslot] = gp->g_locks[0] = 0; | |
364 | gp->g_lockpslot = 0; | |
365 | } | |
366 | #endif | |
367 | if (gp->g_flags & GF_WANTED) { | |
368 | wakeup((caddr_t)&gp->g_flags); | |
369 | gp->g_flags &= ~GF_WANTED; | |
370 | } | |
371 | gp->g_lockp = NULL; | |
372 | return(0); | |
373 | } | |
374 | ||
375 | /*ARGSUSED*/ | |
376 | grfmap(dev, off, prot) | |
377 | dev_t dev; | |
378 | { | |
379 | return(grfaddr(&grf_softc[GRFUNIT(dev)], off)); | |
380 | } | |
381 | ||
382 | #ifdef HPUXCOMPAT | |
383 | ||
384 | /*ARGSUSED*/ | |
385 | hpuxgrfioctl(dev, cmd, data, flag) | |
386 | dev_t dev; | |
387 | caddr_t data; | |
388 | { | |
389 | register struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
390 | int error; | |
391 | ||
392 | error = 0; | |
393 | switch (cmd) { | |
394 | ||
395 | case GCID: | |
396 | *(int *)data = gp->g_display.gd_id; | |
397 | break; | |
398 | ||
399 | case GCON: | |
400 | error = grfon(dev); | |
401 | break; | |
402 | ||
403 | case GCOFF: | |
404 | error = grfoff(dev); | |
405 | break; | |
406 | ||
407 | case GCLOCK: | |
408 | error = grflock(gp, 1); | |
409 | break; | |
410 | ||
411 | case GCUNLOCK: | |
412 | error = grfunlock(gp); | |
413 | break; | |
414 | ||
415 | case GCAON: | |
416 | case GCAOFF: | |
417 | break; | |
418 | ||
419 | /* GCSTATIC is implied by our implementation */ | |
420 | case GCSTATIC_CMAP: | |
421 | case GCVARIABLE_CMAP: | |
422 | break; | |
423 | ||
424 | #ifdef MAPMEM | |
425 | /* map in control regs and frame buffer */ | |
426 | case GCMAP: | |
427 | error = grfmmap(dev, (caddr_t *)data); | |
428 | break; | |
429 | ||
430 | case GCUNMAP: | |
431 | error = grfunmmap(dev, *(caddr_t *)data); | |
432 | /* XXX: HP-UX uses GCUNMAP to get rid of GCSLOT memory */ | |
433 | if (error) | |
434 | error = grflckunmmap(dev, *(caddr_t *)data); | |
435 | break; | |
436 | ||
437 | case GCSLOT: | |
438 | { | |
439 | struct grf_slot *sp = (struct grf_slot *)data; | |
440 | ||
441 | sp->slot = grffindpid(gp); | |
442 | if (sp->slot) | |
443 | error = grflckmmap(dev, (caddr_t *)&sp->addr); | |
444 | else | |
445 | error = EINVAL; /* XXX */ | |
446 | break; | |
447 | } | |
448 | ||
449 | /* | |
450 | * XXX: only used right now to map in rbox control registers | |
451 | * Will be replaced in the future with a real IOMAP interface. | |
452 | */ | |
453 | case IOMAPMAP: | |
454 | error = iommap(dev, (caddr_t *)data); | |
455 | if (!error) | |
456 | u.u_r.r_val1 = *(int *)data; /* XXX: this sux */ | |
457 | break; | |
458 | ||
459 | case IOMAPUNMAP: | |
460 | error = iounmmap(dev, *(caddr_t *)data); | |
461 | break; | |
462 | #endif | |
463 | ||
464 | default: | |
465 | error = EINVAL; | |
466 | break; | |
467 | } | |
468 | return(error); | |
469 | } | |
470 | ||
471 | #endif | |
472 | ||
473 | grfon(dev) | |
474 | dev_t dev; | |
475 | { | |
476 | int unit = GRFUNIT(dev); | |
477 | struct grf_softc *gp = &grf_softc[unit]; | |
478 | ||
479 | /* | |
480 | * XXX: iteoff call relies on devices being in same order | |
481 | * as ITEs and the fact that iteoff only uses the minor part | |
482 | * of the dev arg. | |
483 | */ | |
484 | iteoff(unit, 3); | |
485 | return((*grfdev[gp->g_type].gd_mode) | |
486 | (gp, (dev&GRFOVDEV) ? GM_GRFOVON : GM_GRFON)); | |
487 | } | |
488 | ||
489 | grfoff(dev) | |
490 | dev_t dev; | |
491 | { | |
492 | int unit = GRFUNIT(dev); | |
493 | struct grf_softc *gp = &grf_softc[unit]; | |
494 | int error; | |
495 | ||
496 | #ifdef MAPMEM | |
497 | (void) grfunmmap(dev, (caddr_t)0); | |
498 | #endif | |
499 | error = (*grfdev[gp->g_type].gd_mode) | |
500 | (gp, (dev&GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF); | |
501 | /* XXX: see comment for iteoff above */ | |
502 | iteon(unit, 2); | |
503 | return(error); | |
504 | } | |
505 | ||
506 | grfaddr(gp, off) | |
507 | struct grf_softc *gp; | |
508 | register int off; | |
509 | { | |
510 | #ifdef MAPMEM | |
511 | register struct grfinfo *gi = &gp->g_display; | |
512 | ||
513 | /* control registers */ | |
514 | if (off >= 0 && off < gi->gd_regsize) | |
515 | return(((u_int)gi->gd_regaddr + off) >> PGSHIFT); | |
516 | ||
517 | /* frame buffer */ | |
518 | if (off >= gi->gd_regsize && off < gi->gd_regsize+gi->gd_fbsize) { | |
519 | off -= gi->gd_regsize; | |
520 | return(((u_int)gi->gd_fbaddr + off) >> PGSHIFT); | |
521 | } | |
522 | #endif | |
523 | /* bogus */ | |
524 | return(-1); | |
525 | } | |
526 | ||
527 | #ifdef HPUXCOMPAT | |
528 | /* | |
529 | * Convert a BSD style minor devno to HPUX style. | |
530 | * We cannot just create HPUX style nodes as they require 24 bits | |
531 | * of minor device number and we only have 8. | |
532 | * XXX: This may give the wrong result for remote stats of other | |
533 | * machines where device 10 exists. | |
534 | */ | |
535 | grfdevno(dev) | |
536 | dev_t dev; | |
537 | { | |
538 | int unit = GRFUNIT(dev); | |
539 | struct grf_softc *gp = &grf_softc[unit]; | |
540 | int newdev; | |
541 | ||
542 | if (unit >= NGRF || (gp->g_flags&GF_ALIVE) == 0) | |
543 | return(bsdtohpuxdev(dev)); | |
544 | /* magic major number */ | |
545 | newdev = 12 << 24; | |
546 | /* now construct minor number */ | |
547 | #if defined(HP360) || defined(HP370) | |
548 | if (gp->g_display.gd_regaddr == (caddr_t)DIOIIBASE) | |
549 | newdev |= 0x840200; | |
550 | else | |
551 | #endif | |
552 | if (gp->g_display.gd_regaddr != (caddr_t)GRFIADDR) | |
553 | newdev |= ((u_int)gp->g_display.gd_regaddr-EXTIOBASE) | 0x200; | |
554 | if (dev & GRFIMDEV) | |
555 | newdev |= 0x02; | |
556 | else if (dev & GRFOVDEV) | |
557 | newdev |= 0x01; | |
558 | #ifdef DEBUG | |
559 | if (grfdebug & GDB_DEVNO) | |
560 | printf("grfdevno: dev %x newdev %x\n", dev, newdev); | |
561 | #endif | |
562 | return(newdev); | |
563 | } | |
564 | #endif | |
565 | ||
566 | #ifdef MAPMEM | |
567 | grfmapin(mp, off) | |
568 | struct mapmem *mp; | |
569 | { | |
570 | return(grfaddr(&grf_softc[GRFUNIT(mp->mm_id)], off)); | |
571 | } | |
572 | ||
573 | grfmmap(dev, addrp) | |
574 | dev_t dev; | |
575 | caddr_t *addrp; | |
576 | { | |
577 | struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
578 | register struct mapmem *mp; | |
579 | int len, grfmapin(); | |
580 | ||
581 | #ifdef DEBUG | |
582 | if (grfdebug & GDB_MMAP) | |
583 | printf("grfmmap(%d): addr %x\n", u.u_procp->p_pid, *addrp); | |
584 | #endif | |
585 | len = gp->g_display.gd_regsize + gp->g_display.gd_fbsize; | |
586 | mp = mmalloc(minor(dev), addrp, len, MM_RW|MM_CI|MM_NOCORE, &grfops); | |
587 | if (mp == MMNIL) | |
588 | return(u.u_error); | |
589 | if (!mmmapin(mp, grfmapin)) { | |
590 | mmfree(mp); | |
591 | return(u.u_error); | |
592 | } | |
593 | return(0); | |
594 | } | |
595 | ||
596 | grfunmmap(dev, addr) | |
597 | dev_t dev; | |
598 | caddr_t addr; | |
599 | { | |
600 | register struct mapmem *mp, **mpp; | |
601 | int found, unit = minor(dev); | |
602 | ||
603 | #ifdef DEBUG | |
604 | if (grfdebug & GDB_MMAP) | |
605 | printf("grfunmmap(%d): id %d addr %x\n", | |
606 | u.u_procp->p_pid, unit, addr); | |
607 | #endif | |
608 | found = 0; | |
609 | mpp = &u.u_mmap; | |
610 | for (mp = *mpp; mp; mp = *mpp) { | |
611 | if (mp->mm_ops != &grfops || mp->mm_id != unit) { | |
612 | mpp = &mp->mm_next; | |
613 | continue; | |
614 | } | |
615 | if (addr && | |
616 | (addr < mp->mm_uva || addr >= mp->mm_uva+mp->mm_size)) { | |
617 | mpp = &mp->mm_next; | |
618 | continue; | |
619 | } | |
620 | grfexit(mp); | |
621 | found++; | |
622 | } | |
623 | return(found ? 0 : EINVAL); | |
624 | } | |
625 | ||
626 | grfexit(mp) | |
627 | struct mapmem *mp; | |
628 | { | |
629 | struct grf_softc *gp = &grf_softc[GRFUNIT(mp->mm_id)]; | |
630 | ||
631 | #ifdef DEBUG | |
632 | if (grfdebug & GDB_MMAP) | |
633 | printf("grfexit(%d): id %d %x@%x\n", | |
634 | u.u_procp->p_pid, mp->mm_id, mp->mm_size, mp->mm_uva); | |
635 | #endif | |
636 | (void) grfunlock(gp); | |
637 | #ifdef HPUXCOMPAT | |
638 | grfrmpid(gp); | |
639 | #endif | |
640 | mmmapout(mp); | |
641 | mmfree(mp); | |
642 | } | |
643 | ||
644 | #ifdef HPUXCOMPAT | |
645 | iommap(dev, addrp) | |
646 | dev_t dev; | |
647 | caddr_t *addrp; | |
648 | { | |
649 | struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
650 | register struct mapmem *mp; | |
651 | int len, grfmapin(); | |
652 | ||
653 | #ifdef DEBUG | |
654 | if (grfdebug & (GDB_MMAP|GDB_IOMAP)) | |
655 | printf("iommap(%d): addr %x\n", u.u_procp->p_pid, *addrp); | |
656 | #endif | |
657 | len = gp->g_display.gd_regsize; | |
658 | mp = mmalloc(minor(dev), addrp, len, MM_RW|MM_CI|MM_NOCORE, &grfiomops); | |
659 | if (mp == MMNIL) | |
660 | return(u.u_error); | |
661 | if (!mmmapin(mp, grfmapin)) { | |
662 | mmfree(mp); | |
663 | return(u.u_error); | |
664 | } | |
665 | return(0); | |
666 | } | |
667 | ||
668 | iounmmap(dev, addr) | |
669 | dev_t dev; | |
670 | caddr_t addr; | |
671 | { | |
672 | struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
673 | register struct mapmem *mp, **mpp; | |
674 | int found, len, unit = minor(dev); | |
675 | ||
676 | #ifdef DEBUG | |
677 | if (grfdebug & (GDB_MMAP|GDB_IOMAP)) | |
678 | printf("iounmmap(%d): id %d addr %x\n", | |
679 | u.u_procp->p_pid, unit, addr); | |
680 | #endif | |
681 | found = 0; | |
682 | len = gp->g_display.gd_regsize; | |
683 | mpp = &u.u_mmap; | |
684 | for (mp = *mpp; mp; mp = *mpp) { | |
685 | if (mp->mm_ops != &grfiomops || mp->mm_id != unit) { | |
686 | mpp = &mp->mm_next; | |
687 | continue; | |
688 | } | |
689 | if (addr && | |
690 | (addr < mp->mm_uva || addr >= mp->mm_uva+mp->mm_size || | |
691 | len != mp->mm_size)) { | |
692 | mpp = &mp->mm_next; | |
693 | continue; | |
694 | } | |
695 | grfexit(mp); | |
696 | found++; | |
697 | } | |
698 | return(found ? 0 : EINVAL); | |
699 | } | |
700 | ||
701 | /* | |
702 | * Processes involved in framebuffer mapping via GCSLOT are recorded in | |
703 | * an array of pids. The first element is used to record the last slot used | |
704 | * (for faster lookups). The remaining elements record up to GRFMAXLCK-1 | |
705 | * process ids. Returns a slot number between 1 and GRFMAXLCK or 0 if no | |
706 | * slot is available. | |
707 | */ | |
708 | grffindpid(gp) | |
709 | struct grf_softc *gp; | |
710 | { | |
711 | register short pid, *sp; | |
712 | register int i, limit; | |
713 | int ni; | |
714 | ||
715 | if (gp->g_pid == NULL) { | |
716 | gp->g_pid = (short *) | |
717 | malloc(GRFMAXLCK * sizeof(short), M_DEVBUF, M_WAITOK); | |
718 | bzero((caddr_t)gp->g_pid, GRFMAXLCK * sizeof(short)); | |
719 | } | |
720 | pid = u.u_procp->p_pid; | |
721 | ni = limit = gp->g_pid[0]; | |
722 | for (i = 1, sp = &gp->g_pid[1]; i <= limit; i++, sp++) { | |
723 | if (*sp == pid) | |
724 | goto done; | |
725 | if (*sp == 0) | |
726 | ni = i; | |
727 | } | |
728 | i = ni; | |
729 | if (i < limit) { | |
730 | gp->g_pid[i] = pid; | |
731 | goto done; | |
732 | } | |
733 | if (++i == GRFMAXLCK) | |
734 | return(0); | |
735 | gp->g_pid[0] = i; | |
736 | gp->g_pid[i] = pid; | |
737 | done: | |
738 | #ifdef DEBUG | |
739 | if (grfdebug & GDB_LOCK) | |
740 | printf("grffindpid(%d): slot %d of %d\n", | |
741 | pid, i, gp->g_pid[0]); | |
742 | #endif | |
743 | return(i); | |
744 | } | |
745 | ||
746 | grfrmpid(gp) | |
747 | struct grf_softc *gp; | |
748 | { | |
749 | register short pid, *sp; | |
750 | register int limit, i; | |
751 | int mi; | |
752 | ||
753 | if (gp->g_pid == NULL || (limit = gp->g_pid[0]) == 0) | |
754 | return; | |
755 | pid = u.u_procp->p_pid; | |
756 | limit = gp->g_pid[0]; | |
757 | mi = 0; | |
758 | for (i = 1, sp = &gp->g_pid[1]; i <= limit; i++, sp++) { | |
759 | if (*sp == pid) | |
760 | *sp = 0; | |
761 | else if (*sp) | |
762 | mi = i; | |
763 | } | |
764 | i = mi; | |
765 | if (i < limit) | |
766 | gp->g_pid[0] = i; | |
767 | #ifdef DEBUG | |
768 | if (grfdebug & GDB_LOCK) | |
769 | printf("grfrmpid(%d): slot %d of %d\n", | |
770 | pid, sp-gp->g_pid, gp->g_pid[0]); | |
771 | #endif | |
772 | } | |
773 | ||
774 | /*ARGSUSED*/ | |
775 | grflckmapin(mp, off) | |
776 | struct mapmem *mp; | |
777 | { | |
778 | u_int pa = kvtop((u_int)grf_softc[GRFUNIT(mp->mm_id)].g_locks); | |
779 | ||
780 | #ifdef DEBUG | |
781 | if (grfdebug & GDB_LOCK) | |
782 | printf("grflckmapin(%d): va %x pa %x\n", u.u_procp->p_pid, | |
783 | grf_softc[GRFUNIT(mp->mm_id)].g_locks, pa); | |
784 | #endif | |
785 | return(pa >> PGSHIFT); | |
786 | } | |
787 | ||
788 | grflckmmap(dev, addrp) | |
789 | dev_t dev; | |
790 | caddr_t *addrp; | |
791 | { | |
792 | struct grf_softc *gp = &grf_softc[GRFUNIT(dev)]; | |
793 | register struct mapmem *mp; | |
794 | int grflckmapin(); | |
795 | ||
796 | #ifdef DEBUG | |
797 | if (grfdebug & (GDB_MMAP|GDB_LOCK)) | |
798 | printf("grflckmmap(%d): addr %x\n", | |
799 | u.u_procp->p_pid, *addrp); | |
800 | #endif | |
801 | if (gp->g_locks == NULL) { | |
802 | gp->g_locks = (u_char *) cialloc(NBPG); | |
803 | if (gp->g_locks == NULL) | |
804 | return(ENOMEM); | |
805 | } | |
806 | mp = mmalloc(minor(dev), addrp, NBPG, MM_RW|MM_CI, &grflckops); | |
807 | if (mp == MMNIL) | |
808 | return(u.u_error); | |
809 | if (!mmmapin(mp, grflckmapin)) { | |
810 | mmfree(mp); | |
811 | return(u.u_error); | |
812 | } | |
813 | return(0); | |
814 | } | |
815 | ||
816 | grflckunmmap(dev, addr) | |
817 | dev_t dev; | |
818 | caddr_t addr; | |
819 | { | |
820 | register struct mapmem *mp; | |
821 | int unit = minor(dev); | |
822 | ||
823 | #ifdef DEBUG | |
824 | if (grfdebug & (GDB_MMAP|GDB_LOCK)) | |
825 | printf("grflckunmmap(%d): id %d addr %x\n", | |
826 | u.u_procp->p_pid, unit, addr); | |
827 | #endif | |
828 | for (mp = u.u_mmap; mp; mp = mp->mm_next) | |
829 | if (mp->mm_ops == &grflckops && mp->mm_id == unit && | |
830 | mp->mm_uva == addr) { | |
831 | grfexit(mp); | |
832 | return(0); | |
833 | } | |
834 | return(EINVAL); | |
835 | } | |
836 | #endif /* HPUXCOMPAT */ | |
837 | #endif /* MAPMEM */ | |
838 | #endif /* NGRF > 0 */ |