Annotation of sys/arch/alpha/tc/sfb.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: sfb.c,v 1.18 2006/11/29 12:13:51 miod Exp $ */
2: /* $NetBSD: sfb.c,v 1.7 1996/12/05 01:39:44 cgd Exp $ */
3:
4: /*
5: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Chris G. Demetriou
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: #include <sys/param.h>
32: #include <sys/systm.h>
33: #include <sys/kernel.h>
34: #include <sys/device.h>
35: #include <sys/malloc.h>
36: #include <sys/buf.h>
37: #include <sys/conf.h>
38: #include <sys/ioctl.h>
39:
40: #include <uvm/uvm_extern.h>
41:
42: #include <machine/bus.h>
43: #include <machine/intr.h>
44:
45: #include <dev/tc/tcvar.h>
46: #include <machine/sfbreg.h>
47: #include <alpha/tc/sfbvar.h>
48:
49: #include <dev/rcons/raster.h>
50: #include <dev/wscons/wscons_raster.h>
51: #include <dev/wscons/wsdisplayvar.h>
52: #include <machine/fbio.h>
53:
54: #include <machine/autoconf.h>
55: #include <machine/pte.h>
56:
57: int sfbmatch(struct device *, void *, void *);
58: void sfbattach(struct device *, struct device *, void *);
59:
60: struct cfattach sfb_ca = {
61: sizeof(struct sfb_softc), sfbmatch, sfbattach,
62: };
63:
64: struct cfdriver sfb_cd = {
65: NULL, "sfb", DV_DULL,
66: };
67:
68: void sfb_getdevconfig(tc_addr_t dense_addr, struct sfb_devconfig *dc);
69: struct sfb_devconfig sfb_console_dc;
70: tc_addr_t sfb_consaddr;
71:
72: struct wsdisplay_emulops sfb_emulfuncs = {
73: rcons_cursor, /* could use hardware cursor; punt */
74: rcons_mapchar,
75: rcons_putchar,
76: rcons_copycols,
77: rcons_erasecols,
78: rcons_copyrows,
79: rcons_eraserows,
80: rcons_alloc_attr
81: };
82:
83: struct wsscreen_descr sfb_stdscreen = {
84: "std",
85: 0, 0, /* will be filled in -- XXX shouldn't, it's global */
86: &sfb_emulfuncs,
87: 0, 0
88: };
89: const struct wsscreen_descr *_sfb_scrlist[] = {
90: &sfb_stdscreen,
91: /* XXX other formats, graphics screen? */
92: };
93:
94: struct wsscreen_list sfb_screenlist = {
95: sizeof(_sfb_scrlist) / sizeof(struct wsscreen_descr *), _sfb_scrlist
96: };
97:
98: int sfbioctl(void *, u_long, caddr_t, int, struct proc *);
99: paddr_t sfbmmap(void *, off_t, int);
100:
101: static int sfb_alloc_screen(void *, const struct wsscreen_descr *,
102: void **, int *, int *, long *);
103: static void sfb_free_screen(void *, void *);
104: static int sfb_show_screen(void *, void *, int,
105: void (*) (void *, int, int), void *);
106:
107: #if 0
108: void sfb_blank(struct sfb_devconfig *);
109: void sfb_unblank(struct sfb_devconfig *);
110: #endif
111:
112: struct wsdisplay_accessops sfb_accessops = {
113: sfbioctl,
114: sfbmmap,
115: sfb_alloc_screen,
116: sfb_free_screen,
117: sfb_show_screen,
118: };
119:
120: int
121: sfbmatch(parent, match, aux)
122: struct device *parent;
123: void *match;
124: void *aux;
125: {
126: struct tc_attach_args *ta = aux;
127:
128: if (strncmp("PMAGB-BA", ta->ta_modname, TC_ROM_LLEN) != 0)
129: return (0);
130:
131: return (10);
132: }
133:
134: void
135: sfb_getdevconfig(dense_addr, dc)
136: tc_addr_t dense_addr;
137: struct sfb_devconfig *dc;
138: {
139: struct raster *rap;
140: struct rcons *rcp;
141: char *regp, *ramdacregp;
142: int i;
143:
144: dc->dc_vaddr = dense_addr;
145: dc->dc_paddr = ALPHA_K0SEG_TO_PHYS(dc->dc_vaddr); /* XXX */
146: dc->dc_size = SFB_SIZE;
147:
148: regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET;
149: ramdacregp = (char *)dc->dc_vaddr + SFB_RAMDAC_OFFSET;
150:
151: dc->dc_wid =
152: (*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_HSETUP) & 0x1ff) * 4;
153: dc->dc_ht =
154: (*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VSETUP) & 0x7ff);
155:
156: switch (*(volatile u_int32_t *)(regp + SFB_ASIC_DEEP)) {
157: case 0:
158: case 1: /* XXX by the book; wrong? */
159: dc->dc_depth = 8; /* 8 plane */
160: break;
161: case 2:
162: dc->dc_depth = 16; /* 16 plane */
163: break;
164: case 4:
165: dc->dc_depth = 32; /* 32 plane */
166: break;
167: default:
168: dc->dc_depth = 8; /* XXX can't happen? */
169: break;
170: }
171:
172: dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8);
173:
174: dc->dc_videobase = dc->dc_vaddr + SFB_FB_OFFSET +
175: ((*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_BASE)) *
176: 4096 * (dc->dc_depth / 8));
177:
178: (*(volatile u_int32_t *)(regp + SFB_ASIC_MODE)) = 0;
179: tc_wmb();
180: (*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID)) = 1;
181: tc_wmb();
182:
183: /*
184: * Set all bits in the pixel mask, to enable writes to all pixels.
185: * It seems that the console firmware clears some of them
186: * under some circumstances, which causes cute vertical stripes.
187: */
188: (*(volatile u_int32_t *)(regp + SFB_ASIC_PIXELMASK)) = 0xffffffff;
189: tc_wmb();
190: (*(volatile u_int32_t *)(regp + SFB_ASIC_PLANEMASK)) = 0xffffffff;
191: tc_wmb();
192:
193: /* Initialize the RAMDAC/colormap */
194: /* start XXX XXX XXX */
195: (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_ADDRLOW)) = 0;
196: (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_ADDRHIGH)) = 0;
197: tc_wmb();
198: for (i = 0; i < 256; i++) {
199: (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) =
200: i ? 0xff : 0;
201: tc_wmb();
202: (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) =
203: i ? 0xff : 0;
204: tc_wmb();
205: (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) =
206: i ? 0xff : 0;
207: tc_wmb();
208: }
209: /* end XXX XXX XXX */
210:
211: /* clear the screen */
212: for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(u_int32_t))
213: *(u_int32_t *)(dc->dc_videobase + i) = 0x00000000;
214:
215: /* initialize the raster */
216: rap = &dc->dc_raster;
217: rap->width = dc->dc_wid;
218: rap->height = dc->dc_ht;
219: rap->depth = 8;
220: rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t);
221: rap->pixels = (u_int32_t *)dc->dc_videobase;
222:
223: /* initialize the raster console blitter */
224: rcp = &dc->dc_rcons;
225: rcp->rc_sp = rap;
226: rcp->rc_crow = rcp->rc_ccol = -1;
227: rcp->rc_crowp = &rcp->rc_crow;
228: rcp->rc_ccolp = &rcp->rc_ccol;
229: rcons_init(rcp, 34, 80);
230:
231: sfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow;
232: sfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol;
233: }
234:
235: void
236: sfbattach(parent, self, aux)
237: struct device *parent, *self;
238: void *aux;
239: {
240: struct sfb_softc *sc = (struct sfb_softc *)self;
241: struct tc_attach_args *ta = aux;
242: struct wsemuldisplaydev_attach_args waa;
243: int console;
244:
245: console = (ta->ta_addr == sfb_consaddr);
246: if (console) {
247: sc->sc_dc = &sfb_console_dc;
248: sc->nscreens = 1;
249: } else {
250: sc->sc_dc = (struct sfb_devconfig *)
251: malloc(sizeof(struct sfb_devconfig), M_DEVBUF, M_WAITOK);
252: sfb_getdevconfig(ta->ta_addr, sc->sc_dc);
253: }
254: if (sc->sc_dc->dc_vaddr == NULL) {
255: printf(": couldn't map memory space; punt!\n");
256: return;
257: }
258: printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht,
259: sc->sc_dc->dc_depth);
260:
261: #if 0
262: x = (char *)ta->ta_addr + SFB_ASIC_OFFSET;
263: printf("%s: Video Base Address = 0x%x\n", self->dv_xname,
264: *(u_int32_t *)(x + SFB_ASIC_VIDEO_BASE));
265: printf("%s: Horizontal Setup = 0x%x\n", self->dv_xname,
266: *(u_int32_t *)(x + SFB_ASIC_VIDEO_HSETUP));
267: printf("%s: Vertical Setup = 0x%x\n", self->dv_xname,
268: *(u_int32_t *)(x + SFB_ASIC_VIDEO_VSETUP));
269: #endif
270:
271: waa.console = console;
272: waa.scrdata = &sfb_screenlist;
273: waa.accessops = &sfb_accessops;
274: waa.accesscookie = sc;
275: waa.defaultscreens = 0;
276:
277: config_found(self, &waa, wsemuldisplaydevprint);
278: }
279:
280: int
281: sfbioctl(v, cmd, data, flag, p)
282: void *v;
283: u_long cmd;
284: caddr_t data;
285: int flag;
286: struct proc *p;
287: {
288: struct sfb_softc *sc = v;
289: struct sfb_devconfig *dc = sc->sc_dc;
290:
291: switch (cmd) {
292: case FBIOGTYPE:
293: #define fbt ((struct fbtype *)data)
294: fbt->fb_type = FBTYPE_SFB;
295: fbt->fb_height = sc->sc_dc->dc_ht;
296: fbt->fb_width = sc->sc_dc->dc_wid;
297: fbt->fb_depth = sc->sc_dc->dc_depth;
298: fbt->fb_cmsize = 256; /* XXX ??? */
299: fbt->fb_size = sc->sc_dc->dc_size;
300: #undef fbt
301: return (0);
302:
303: #if 0
304: case FBIOPUTCMAP:
305: return (*tgar->tgar_set_cmap)(dc, (struct fbcmap *)data);
306:
307: case FBIOGETCMAP:
308: return (*tgar->tgar_get_cmap)(dc, (struct fbcmap *)data);
309: #endif
310:
311: case FBIOGATTR:
312: return (ENOTTY); /* XXX ? */
313:
314: #if 0
315: case FBIOSVIDEO:
316: if (*(int *)data == FBVIDEO_OFF)
317: sfb_blank(sc->sc_dc);
318: else
319: sfb_unblank(sc->sc_dc);
320: return (0);
321: #endif
322:
323: case FBIOGVIDEO:
324: *(int *)data = dc->dc_blanked ? FBVIDEO_OFF : FBVIDEO_ON;
325: return (0);
326:
327: #if 0
328: case FBIOSCURSOR:
329: return (*tgar->tgar_set_cursor)(dc, (struct fbcursor *)data);
330:
331: case FBIOGCURSOR:
332: return (*tgar->tgar_get_cursor)(dc, (struct fbcursor *)data);
333:
334: case FBIOSCURPOS:
335: return (*tgar->tgar_set_curpos)(dc, (struct fbcurpos *)data);
336:
337: case FBIOGCURPOS:
338: return (*tgar->tgar_get_curpos)(dc, (struct fbcurpos *)data);
339:
340: case FBIOGCURMAX:
341: return (*tgar->tgar_get_curmax)(dc, (struct fbcurpos *)data);
342: #endif
343: }
344: return (-1);
345: }
346:
347: paddr_t
348: sfbmmap(v, offset, prot)
349: void *v;
350: off_t offset;
351: int prot;
352: {
353: struct sfb_softc *sc = v;
354:
355: if (offset >= SFB_SIZE || offset < 0)
356: return (-1);
357: return atop(sc->sc_dc->dc_paddr + offset);
358: }
359:
360: int
361: sfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
362: void *v;
363: const struct wsscreen_descr *type;
364: void **cookiep;
365: int *curxp, *curyp;
366: long *attrp;
367: {
368: struct sfb_softc *sc = v;
369: long defattr;
370:
371: if (sc->nscreens > 0)
372: return (ENOMEM);
373:
374: *cookiep = &sc->sc_dc->dc_rcons; /* one and only for now */
375: *curxp = 0;
376: *curyp = 0;
377: rcons_alloc_attr(&sc->sc_dc->dc_rcons, 0, 0, 0, &defattr);
378: *attrp = defattr;
379: sc->nscreens++;
380: return (0);
381: }
382:
383: void
384: sfb_free_screen(v, cookie)
385: void *v;
386: void *cookie;
387: {
388: struct sfb_softc *sc = v;
389:
390: if (sc->sc_dc == &sfb_console_dc)
391: panic("sfb_free_screen: console");
392:
393: sc->nscreens--;
394: }
395:
396: int
397: sfb_show_screen(v, cookie, waitok, cb, cbarg)
398: void *v;
399: void *cookie;
400: int waitok;
401: void (*cb)(void *, int, int);
402: void *cbarg;
403: {
404:
405: return (0);
406: }
407:
408: #if 0
409: int
410: sfb_cnattach(addr)
411: tc_addr_t addr;
412: {
413: struct sfb_devconfig *dcp = &sfb_console_dc;
414: long defattr;
415:
416: sfb_getdevconfig(addr, dcp);
417:
418: rcons_alloc_attr(&dcp->dc_rcons, 0, 0, 0, &defattr);
419:
420: wsdisplay_cnattach(&sfb_stdscreen, &dcp->dc_rcons,
421: 0, 0, defattr);
422: sfb_consaddr = addr;
423: return(0);
424: }
425: #endif
426:
427: #if 0
428: /*
429: * Functions to blank and unblank the display.
430: */
431: void
432: sfb_blank(dc)
433: struct sfb_devconfig *dc;
434: {
435: char *regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET;
436:
437: if (!dc->dc_blanked) {
438: dc->dc_blanked = 1;
439: *(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID) = 0;
440: tc_wmb();
441: }
442: }
443:
444: void
445: sfb_unblank(dc)
446: struct sfb_devconfig *dc;
447: {
448: char *regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET;
449:
450: if (dc->dc_blanked) {
451: dc->dc_blanked = 0;
452: *(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID) = 1;
453: tc_wmb();
454: }
455: }
456: #endif
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