/* $OpenBSD: sfb.c,v 1.16 2006/01/02 05:21:28 brad Exp $ */ /* $NetBSD: sfb.c,v 1.7 1996/12/05 01:39:44 cgd Exp $ */ /* * Copyright (c) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include int sfbmatch(struct device *, void *, void *); void sfbattach(struct device *, struct device *, void *); struct cfattach sfb_ca = { sizeof(struct sfb_softc), sfbmatch, sfbattach, }; struct cfdriver sfb_cd = { NULL, "sfb", DV_DULL, }; void sfb_getdevconfig(tc_addr_t dense_addr, struct sfb_devconfig *dc); struct sfb_devconfig sfb_console_dc; tc_addr_t sfb_consaddr; struct wsdisplay_emulops sfb_emulfuncs = { rcons_cursor, /* could use hardware cursor; punt */ rcons_mapchar, rcons_putchar, rcons_copycols, rcons_erasecols, rcons_copyrows, rcons_eraserows, rcons_alloc_attr }; struct wsscreen_descr sfb_stdscreen = { "std", 0, 0, /* will be filled in -- XXX shouldn't, it's global */ &sfb_emulfuncs, 0, 0 }; const struct wsscreen_descr *_sfb_scrlist[] = { &sfb_stdscreen, /* XXX other formats, graphics screen? */ }; struct wsscreen_list sfb_screenlist = { sizeof(_sfb_scrlist) / sizeof(struct wsscreen_descr *), _sfb_scrlist }; int sfbioctl(void *, u_long, caddr_t, int, struct proc *); paddr_t sfbmmap(void *, off_t, int); static int sfb_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, int *, long *); static void sfb_free_screen(void *, void *); static int sfb_show_screen(void *, void *, int, void (*) (void *, int, int), void *); #if 0 void sfb_blank(struct sfb_devconfig *); void sfb_unblank(struct sfb_devconfig *); #endif struct wsdisplay_accessops sfb_accessops = { sfbioctl, sfbmmap, sfb_alloc_screen, sfb_free_screen, sfb_show_screen, }; int sfbmatch(parent, match, aux) struct device *parent; void *match; void *aux; { struct tc_attach_args *ta = aux; if (strncmp("PMAGB-BA", ta->ta_modname, TC_ROM_LLEN) != 0) return (0); return (10); } void sfb_getdevconfig(dense_addr, dc) tc_addr_t dense_addr; struct sfb_devconfig *dc; { struct raster *rap; struct rcons *rcp; char *regp, *ramdacregp; int i; dc->dc_vaddr = dense_addr; dc->dc_paddr = ALPHA_K0SEG_TO_PHYS(dc->dc_vaddr); /* XXX */ dc->dc_size = SFB_SIZE; regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET; ramdacregp = (char *)dc->dc_vaddr + SFB_RAMDAC_OFFSET; dc->dc_wid = (*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_HSETUP) & 0x1ff) * 4; dc->dc_ht = (*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VSETUP) & 0x7ff); switch (*(volatile u_int32_t *)(regp + SFB_ASIC_DEEP)) { case 0: case 1: /* XXX by the book; wrong? */ dc->dc_depth = 8; /* 8 plane */ break; case 2: dc->dc_depth = 16; /* 16 plane */ break; case 4: dc->dc_depth = 32; /* 32 plane */ break; default: dc->dc_depth = 8; /* XXX can't happen? */ break; } dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8); dc->dc_videobase = dc->dc_vaddr + SFB_FB_OFFSET + ((*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_BASE)) * 4096 * (dc->dc_depth / 8)); (*(volatile u_int32_t *)(regp + SFB_ASIC_MODE)) = 0; tc_wmb(); (*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID)) = 1; tc_wmb(); /* * Set all bits in the pixel mask, to enable writes to all pixels. * It seems that the console firmware clears some of them * under some circumstances, which causes cute vertical stripes. */ (*(volatile u_int32_t *)(regp + SFB_ASIC_PIXELMASK)) = 0xffffffff; tc_wmb(); (*(volatile u_int32_t *)(regp + SFB_ASIC_PLANEMASK)) = 0xffffffff; tc_wmb(); /* Initialize the RAMDAC/colormap */ /* start XXX XXX XXX */ (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_ADDRLOW)) = 0; (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_ADDRHIGH)) = 0; tc_wmb(); for (i = 0; i < 256; i++) { (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) = i ? 0xff : 0; tc_wmb(); (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) = i ? 0xff : 0; tc_wmb(); (*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) = i ? 0xff : 0; tc_wmb(); } /* end XXX XXX XXX */ /* clear the screen */ for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(u_int32_t)) *(u_int32_t *)(dc->dc_videobase + i) = 0x00000000; /* initialize the raster */ rap = &dc->dc_raster; rap->width = dc->dc_wid; rap->height = dc->dc_ht; rap->depth = 8; rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t); rap->pixels = (u_int32_t *)dc->dc_videobase; /* initialize the raster console blitter */ rcp = &dc->dc_rcons; rcp->rc_sp = rap; rcp->rc_crow = rcp->rc_ccol = -1; rcp->rc_crowp = &rcp->rc_crow; rcp->rc_ccolp = &rcp->rc_ccol; rcons_init(rcp, 34, 80); sfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow; sfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol; } void sfbattach(parent, self, aux) struct device *parent, *self; void *aux; { struct sfb_softc *sc = (struct sfb_softc *)self; struct tc_attach_args *ta = aux; struct wsemuldisplaydev_attach_args waa; int console; console = (ta->ta_addr == sfb_consaddr); if (console) { sc->sc_dc = &sfb_console_dc; sc->nscreens = 1; } else { sc->sc_dc = (struct sfb_devconfig *) malloc(sizeof(struct sfb_devconfig), M_DEVBUF, M_WAITOK); sfb_getdevconfig(ta->ta_addr, sc->sc_dc); } if (sc->sc_dc->dc_vaddr == NULL) { printf(": couldn't map memory space; punt!\n"); return; } printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht, sc->sc_dc->dc_depth); #if 0 x = (char *)ta->ta_addr + SFB_ASIC_OFFSET; printf("%s: Video Base Address = 0x%x\n", self->dv_xname, *(u_int32_t *)(x + SFB_ASIC_VIDEO_BASE)); printf("%s: Horizontal Setup = 0x%x\n", self->dv_xname, *(u_int32_t *)(x + SFB_ASIC_VIDEO_HSETUP)); printf("%s: Vertical Setup = 0x%x\n", self->dv_xname, *(u_int32_t *)(x + SFB_ASIC_VIDEO_VSETUP)); #endif waa.console = console; waa.scrdata = &sfb_screenlist; waa.accessops = &sfb_accessops; waa.accesscookie = sc; config_found(self, &waa, wsemuldisplaydevprint); } int sfbioctl(v, cmd, data, flag, p) void *v; u_long cmd; caddr_t data; int flag; struct proc *p; { struct sfb_softc *sc = v; struct sfb_devconfig *dc = sc->sc_dc; switch (cmd) { case FBIOGTYPE: #define fbt ((struct fbtype *)data) fbt->fb_type = FBTYPE_SFB; fbt->fb_height = sc->sc_dc->dc_ht; fbt->fb_width = sc->sc_dc->dc_wid; fbt->fb_depth = sc->sc_dc->dc_depth; fbt->fb_cmsize = 256; /* XXX ??? */ fbt->fb_size = sc->sc_dc->dc_size; #undef fbt return (0); #if 0 case FBIOPUTCMAP: return (*tgar->tgar_set_cmap)(dc, (struct fbcmap *)data); case FBIOGETCMAP: return (*tgar->tgar_get_cmap)(dc, (struct fbcmap *)data); #endif case FBIOGATTR: return (ENOTTY); /* XXX ? */ #if 0 case FBIOSVIDEO: if (*(int *)data == FBVIDEO_OFF) sfb_blank(sc->sc_dc); else sfb_unblank(sc->sc_dc); return (0); #endif case FBIOGVIDEO: *(int *)data = dc->dc_blanked ? FBVIDEO_OFF : FBVIDEO_ON; return (0); #if 0 case FBIOSCURSOR: return (*tgar->tgar_set_cursor)(dc, (struct fbcursor *)data); case FBIOGCURSOR: return (*tgar->tgar_get_cursor)(dc, (struct fbcursor *)data); case FBIOSCURPOS: return (*tgar->tgar_set_curpos)(dc, (struct fbcurpos *)data); case FBIOGCURPOS: return (*tgar->tgar_get_curpos)(dc, (struct fbcurpos *)data); case FBIOGCURMAX: return (*tgar->tgar_get_curmax)(dc, (struct fbcurpos *)data); #endif } return (-1); } paddr_t sfbmmap(v, offset, prot) void *v; off_t offset; int prot; { struct sfb_softc *sc = v; if (offset >= SFB_SIZE || offset < 0) return (-1); return atop(sc->sc_dc->dc_paddr + offset); } int sfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) void *v; const struct wsscreen_descr *type; void **cookiep; int *curxp, *curyp; long *attrp; { struct sfb_softc *sc = v; long defattr; if (sc->nscreens > 0) return (ENOMEM); *cookiep = &sc->sc_dc->dc_rcons; /* one and only for now */ *curxp = 0; *curyp = 0; rcons_alloc_attr(&sc->sc_dc->dc_rcons, 0, 0, 0, &defattr); *attrp = defattr; sc->nscreens++; return (0); } void sfb_free_screen(v, cookie) void *v; void *cookie; { struct sfb_softc *sc = v; if (sc->sc_dc == &sfb_console_dc) panic("sfb_free_screen: console"); sc->nscreens--; } int sfb_show_screen(v, cookie, waitok, cb, cbarg) void *v; void *cookie; int waitok; void (*cb)(void *, int, int); void *cbarg; { return (0); } #if 0 int sfb_cnattach(addr) tc_addr_t addr; { struct sfb_devconfig *dcp = &sfb_console_dc; long defattr; sfb_getdevconfig(addr, dcp); rcons_alloc_attr(&dcp->dc_rcons, 0, 0, 0, &defattr); wsdisplay_cnattach(&sfb_stdscreen, &dcp->dc_rcons, 0, 0, defattr); sfb_consaddr = addr; return(0); } #endif #if 0 /* * Functions to blank and unblank the display. */ void sfb_blank(dc) struct sfb_devconfig *dc; { char *regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET; if (!dc->dc_blanked) { dc->dc_blanked = 1; *(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID) = 0; tc_wmb(); } } void sfb_unblank(dc) struct sfb_devconfig *dc; { char *regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET; if (dc->dc_blanked) { dc->dc_blanked = 0; *(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID) = 1; tc_wmb(); } } #endif