Annotation of sys/arch/alpha/tc/sfb.c, Revision 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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