/* $OpenBSD: lcspx.c,v 1.17 2011/09/20 21:11:33 miod Exp $ */ /* * Copyright (c) 2006 Miodrag Vallat. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice, this permission notice, and the disclaimer below * appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Copyright (c) 2004 Blaz Antonic * All rights reserved. * * This software contains code written by Michael L. Hitch. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the abovementioned copyrights * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* actually it's a 459 here... */ #define GPXADDR 0x3c000000 /* XXX */ #define GPX_ADDER_OFFSET 0x0000 /* XXX */ #include /* XXX */ #define LCSPX_REG_ADDR 0x39302000 /* registers */ #define LCSPX_REG_SIZE 0x2000 #define LCSPX_REG1_ADDR 0x39b00000 /* more registers */ #define LCSPX_RAMDAC_ADDR 0x39b10000 /* RAMDAC */ #define LCSPX_RAMDAC_INTERLEAVE 0x00004000 #define LCSPX_FB_ADDR 0x38000000 /* frame buffer */ void lcspx_attach(struct device *, struct device *, void *); int lcspx_vsbus_match(struct device *, void *, void *); int lcspx_vxtbus_match(struct device *, void *, void *); struct lcspx_screen { struct rasops_info ss_ri; u_int ss_fbsize; caddr_t ss_addr; /* frame buffer address */ volatile u_int8_t *ss_ramdac[4]; vaddr_t ss_reg; u_int8_t ss_cmap[256 * 3]; }; #define lcspx_reg_read(ss, reg) \ *(volatile u_int32_t *)((ss)->ss_reg + (reg)) #define lcspx_reg_write(ss, reg, val) \ *(volatile u_int32_t *)((ss)->ss_reg + (reg)) = (val) /* for console */ struct lcspx_screen lcspx_consscr; struct lcspx_softc { struct device sc_dev; struct lcspx_screen *sc_scr; int sc_nscreens; }; struct cfattach lcspx_vsbus_ca = { sizeof(struct lcspx_softc), lcspx_vsbus_match, lcspx_attach, }; struct cfattach lcspx_vxtbus_ca = { sizeof(struct lcspx_softc), lcspx_vxtbus_match, lcspx_attach, }; struct cfdriver lcspx_cd = { NULL, "lcspx", DV_DULL }; struct wsscreen_descr lcspx_stdscreen = { "std", }; const struct wsscreen_descr *_lcspx_scrlist[] = { &lcspx_stdscreen, }; const struct wsscreen_list lcspx_screenlist = { sizeof(_lcspx_scrlist) / sizeof(struct wsscreen_descr *), _lcspx_scrlist, }; int lcspx_ioctl(void *, u_long, caddr_t, int, struct proc *); paddr_t lcspx_mmap(void *, off_t, int); int lcspx_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, int *, long *); void lcspx_free_screen(void *, void *); int lcspx_show_screen(void *, void *, int, void (*) (void *, int, int), void *); const struct wsdisplay_accessops lcspx_accessops = { lcspx_ioctl, lcspx_mmap, lcspx_alloc_screen, lcspx_free_screen, lcspx_show_screen, NULL, /* load_font */ NULL, /* scrollback */ NULL, /* getchar */ NULL /* burner */ }; int lcspx_getcmap(struct lcspx_screen *, struct wsdisplay_cmap *); void lcspx_loadcmap(struct lcspx_screen *, int, int); int lcspx_putcmap(struct lcspx_screen *, struct wsdisplay_cmap *); static __inline__ void lcspx_ramdac_wraddr(struct lcspx_screen *, u_int); void lcspx_resetcmap(struct lcspx_screen *); int lcspx_setup_screen(struct lcspx_screen *, u_int, u_int); int lcspx_vsbus_match(struct device *parent, void *vcf, void *aux) { extern int oldvsbus; struct vsbus_softc *sc = (void *)parent; struct vsbus_attach_args *va = aux; volatile struct adder *adder; u_short status; if (va->va_paddr != LCSPX_REG_ADDR) return (0); switch (vax_boardtype) { default: return (0); case VAX_BTYP_420: case VAX_BTYP_43: /* not present on microvaxes */ if ((vax_confdata & KA420_CFG_MULTU) != 0) return (0); if ((vax_confdata & KA420_CFG_VIDOPT) == 0) return (0); /* * We can not check for video memory at the SPX address, * because if no SPX board is installed, the probe will * just hang. * Instead, check for a GPX board and skip probe if the * video option really is a GPX. */ adder = (volatile struct adder *) vax_map_physmem(GPXADDR + GPX_ADDER_OFFSET, 1); if (adder == NULL) return (0); adder->status = 0; status = adder->status; vax_unmap_physmem((vaddr_t)adder, 1); if (status != offsetof(struct adder, status)) return (0); /* XXX do not attach if not console... yet */ if ((vax_confdata & KA420_CFG_L3CON) != 0) return (0); break; case VAX_BTYP_49: if ((vax_confdata & 0x12) != 0x02) return (0); break; } sc->sc_mask = 0x04; /* XXX - should be generated */ scb_fake(0x120, oldvsbus ? 0x14 : 0x15); return (20); } int lcspx_vxtbus_match(struct device *parent, void *vcf, void *aux) { struct bp_conf *bp = aux; int missing; volatile u_int8_t *ch; if (strcmp(bp->type, lcspx_cd.cd_name) != 0) return (0); /* * Check for video memory at SPX address. */ missing = 0; ch = (volatile u_int8_t *)vax_map_physmem(LCSPX_FB_ADDR, 1); *ch = 0x01; if ((*ch & 0x01) == 0) missing = 1; else { *ch = 0x00; if ((*ch & 0x01) != 0) missing = 1; } vax_unmap_physmem((vaddr_t)ch, 1); return (missing ? 0 : 1); } void lcspx_attach(struct device *parent, struct device *self, void *aux) { struct lcspx_softc *sc = (struct lcspx_softc *)self; struct lcspx_screen *ss; struct wsemuldisplaydev_attach_args aa; int i, console; vaddr_t reg1; u_int32_t magic; u_int width, height; extern struct consdev wsdisplay_cons; if (cn_tab == &wsdisplay_cons) { switch (vax_boardtype) { case VAX_BTYP_420: case VAX_BTYP_43: console = (vax_confdata & KA420_CFG_L3CON) == 0; break; case VAX_BTYP_49: console = (vax_confdata & 8) == 0; break; default: /* VXT2000 */ console = (vax_confdata & 2) != 0; break; } } else console = 0; if (console) { ss = &lcspx_consscr; sc->sc_nscreens = 1; } else { ss = malloc(sizeof(*ss), M_DEVBUF, M_NOWAIT | M_ZERO); if (ss == NULL) { printf(": can not allocate memory\n"); return; } switch (vax_boardtype) { case VAX_BTYP_420: case VAX_BTYP_43: /* * See ``EVIL KLUGE ALERT!'' comments in * lcspxcninit() at the end of this file * for meaningless details. */ reg1 = vax_map_physmem(LCSPX_REG1_ADDR, 1); if (reg1 == 0L) { printf(": can not map registers\n"); goto fail1; } magic = *(u_int32_t *)(reg1 + 0x11c); vax_unmap_physmem(reg1, 1); if (magic & 0x80) { width = 1280; height = 1024; } else { width = 1024; height = 864; } break; default: width = 1280; height = 1024; break; } ss->ss_reg = vax_map_physmem(LCSPX_REG_ADDR, LCSPX_REG_SIZE / VAX_NBPG); if (ss->ss_reg == 0L) { printf(": can not map registers\n"); goto fail1; } for (i = 0; i < 4; i++) { ss->ss_ramdac[i] = (volatile u_int8_t *)vax_map_physmem( LCSPX_RAMDAC_ADDR + i * LCSPX_RAMDAC_INTERLEAVE, 1); if (ss->ss_ramdac[i] == NULL) { printf(": can not map RAMDAC registers\n"); goto fail2; } } ss->ss_fbsize = width * height; ss->ss_addr = (caddr_t)vax_map_physmem(LCSPX_FB_ADDR, ss->ss_fbsize / VAX_NBPG); if (ss->ss_addr == NULL) { printf(": can not map frame buffer\n"); goto fail3; } if (lcspx_setup_screen(ss, width, height) != 0) { printf(": initialization failed\n"); goto fail3; } } sc->sc_scr = ss; printf("\n%s: %dx%dx8 frame buffer\n", self->dv_xname, ss->ss_ri.ri_width, ss->ss_ri.ri_height); aa.console = console; aa.scrdata = &lcspx_screenlist; aa.accessops = &lcspx_accessops; aa.accesscookie = sc; aa.defaultscreens = 0; config_found(self, &aa, wsemuldisplaydevprint); return; fail3: vax_unmap_physmem((vaddr_t)ss->ss_addr, ss->ss_fbsize / VAX_NBPG); fail2: for (i = 0; i < 4; i++) if (ss->ss_ramdac[i] != NULL) vax_unmap_physmem((vaddr_t)ss->ss_ramdac[i], 1); vax_unmap_physmem(ss->ss_reg, LCSPX_REG_SIZE / VAX_NBPG); fail1: free(ss, M_DEVBUF); } static __inline__ void lcspx_ramdac_wraddr(struct lcspx_screen *ss, u_int addr) { *(ss->ss_ramdac[BT463_REG_ADDR_LOW]) = addr & 0xff; *(ss->ss_ramdac[BT463_REG_ADDR_HIGH]) = (addr >> 8) & 0xff; } /* * Initialize anything necessary for an emulating wsdisplay to work (i.e. * pick a font, initialize a rasops structure, setup the accessops callbacks.) */ int lcspx_setup_screen(struct lcspx_screen *ss, u_int width, u_int height) { struct rasops_info *ri = &ss->ss_ri; bzero(ri, sizeof(*ri)); ri->ri_depth = 8; ri->ri_width = width; ri->ri_height = height; ri->ri_stride = width; ri->ri_flg = RI_CLEAR | RI_CENTER; ri->ri_bits = (void *)ss->ss_addr; ri->ri_hw = ss; /* * Enable all planes for reading and writing */ lcspx_reg_write(ss, 0x1170, 0xffffffff); lcspx_reg_write(ss, 0x1174, 0xffffffff); lcspx_ramdac_wraddr(ss, 0x0204); /* plane mask */ *(ss->ss_ramdac[BT463_REG_IREG_DATA]) = 0xff; /* * Ask for an unholy big display, rasops will trim this to more * reasonable values. */ if (rasops_init(ri, 160, 160) != 0) return (-1); lcspx_resetcmap(ss); lcspx_stdscreen.ncols = ri->ri_cols; lcspx_stdscreen.nrows = ri->ri_rows; lcspx_stdscreen.textops = &ri->ri_ops; lcspx_stdscreen.fontwidth = ri->ri_font->fontwidth; lcspx_stdscreen.fontheight = ri->ri_font->fontheight; lcspx_stdscreen.capabilities = ri->ri_caps; return (0); } int lcspx_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p) { struct lcspx_softc *sc = v; struct lcspx_screen *ss = sc->sc_scr; struct wsdisplay_fbinfo *wdf; struct wsdisplay_cmap *cm; int error; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_LCSPX; break; case WSDISPLAYIO_GINFO: wdf = (struct wsdisplay_fbinfo *)data; wdf->height = ss->ss_ri.ri_height; wdf->width = ss->ss_ri.ri_width; wdf->depth = 8; wdf->cmsize = 256; break; case WSDISPLAYIO_LINEBYTES: *(u_int *)data = ss->ss_ri.ri_stride; break; case WSDISPLAYIO_GETCMAP: cm = (struct wsdisplay_cmap *)data; error = lcspx_getcmap(ss, cm); if (error != 0) return (error); break; case WSDISPLAYIO_PUTCMAP: cm = (struct wsdisplay_cmap *)data; error = lcspx_putcmap(ss, cm); if (error != 0) return (error); lcspx_loadcmap(ss, cm->index, cm->count); break; case WSDISPLAYIO_GVIDEO: case WSDISPLAYIO_SVIDEO: break; default: return (-1); } return (0); } paddr_t lcspx_mmap(void *v, off_t offset, int prot) { struct lcspx_softc *sc = v; struct lcspx_screen *ss = sc->sc_scr; if (offset >= ss->ss_fbsize || offset < 0) return (-1); return (LCSPX_FB_ADDR + offset); } int lcspx_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, int *curxp, int *curyp, long *defattrp) { struct lcspx_softc *sc = v; struct lcspx_screen *ss = sc->sc_scr; struct rasops_info *ri = &ss->ss_ri; if (sc->sc_nscreens > 0) return (ENOMEM); *cookiep = ri; *curxp = *curyp = 0; ri->ri_ops.alloc_attr(ri, 0, 0, 0, defattrp); sc->sc_nscreens++; return (0); } void lcspx_free_screen(void *v, void *cookie) { struct lcspx_softc *sc = v; sc->sc_nscreens--; } int lcspx_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int), void *cbarg) { return (0); } /* * Colormap handling routines */ int lcspx_getcmap(struct lcspx_screen *ss, struct wsdisplay_cmap *cm) { u_int index = cm->index, count = cm->count, i; int error; u_int8_t ramp[256], *c, *r; if (index >= 256 || count > 256 - index) return (EINVAL); /* extract reds */ c = ss->ss_cmap + 0 + index * 3; for (i = count, r = ramp; i != 0; i--) *r++ = *c, c += 3; if ((error = copyout(ramp, cm->red, count)) != 0) return (error); /* extract greens */ c = ss->ss_cmap + 1 + index * 3; for (i = count, r = ramp; i != 0; i--) *r++ = *c, c += 3; if ((error = copyout(ramp, cm->green, count)) != 0) return (error); /* extract blues */ c = ss->ss_cmap + 2 + index * 3; for (i = count, r = ramp; i != 0; i--) *r++ = *c, c += 3; if ((error = copyout(ramp, cm->blue, count)) != 0) return (error); return (0); } int lcspx_putcmap(struct lcspx_screen *ss, struct wsdisplay_cmap *cm) { u_int index = cm->index, count = cm->count; int i, error; u_int8_t r[256], g[256], b[256], *nr, *ng, *nb, *c; if (index >= 256 || count > 256 - index) return (EINVAL); if ((error = copyin(cm->red, r, count)) != 0) return (error); if ((error = copyin(cm->green, g, count)) != 0) return (error); if ((error = copyin(cm->blue, b, count)) != 0) return (error); nr = r, ng = g, nb = b; c = ss->ss_cmap + index * 3; for (i = count; i != 0; i--) { *c++ = *nr++; *c++ = *ng++; *c++ = *nb++; } return (0); } void lcspx_loadcmap(struct lcspx_screen *ss, int from, int count) { u_int8_t *cmap = ss->ss_cmap; int i; cmap += from * 3; for (i = from; i < from + count; i++) { /* * Reprogram the index every iteration, because the RAMDAC * may not be in autoincrement mode. XXX fix this */ lcspx_ramdac_wraddr(ss, i); *(ss->ss_ramdac[BT463_REG_CMAP_DATA]) = *cmap++; *(ss->ss_ramdac[BT463_REG_CMAP_DATA]) = *cmap++; *(ss->ss_ramdac[BT463_REG_CMAP_DATA]) = *cmap++; } } void lcspx_resetcmap(struct lcspx_screen *ss) { bcopy(rasops_cmap, ss->ss_cmap, sizeof(ss->ss_cmap)); lcspx_loadcmap(ss, 0, 256); } /* * Console support code */ int lcspxcnprobe(void); int lcspxcninit(void); int lcspxcnprobe() { extern vaddr_t virtual_avail; volatile struct adder *adder; volatile u_int8_t *ch; u_short status; int rc; switch (vax_boardtype) { case VAX_BTYP_420: case VAX_BTYP_43: if ((vax_confdata & KA420_CFG_L3CON) != 0) break; /* doesn't use graphics console */ /* not present on microvaxes */ if ((vax_confdata & KA420_CFG_MULTU) != 0) break; if ((vax_confdata & KA420_CFG_VIDOPT) == 0) break; /* * We can not check for video memory at the SPX address, * because if no SPX board is installed, the probe will * just hang. * Instead, check for a GPX board and skip probe if the * video option really is a GPX. */ ioaccess(virtual_avail, GPXADDR + GPX_ADDER_OFFSET, 1); adder = (volatile struct adder *)virtual_avail; adder->status = 0; status = adder->status; iounaccess(virtual_avail, 1); if (status != offsetof(struct adder, status)) break; return (1); case VAX_BTYP_49: if ((vax_confdata & 8) != 0) break; /* doesn't use graphics console */ if ((vax_confdata & 0x12) != 0x02) break; return (1); case VAX_BTYP_VXT: if ((vax_confdata & 2) == 0) break; /* doesn't use graphics console */ /* * Check for video memory at SPX address. */ rc = 0; ioaccess(virtual_avail, LCSPX_FB_ADDR, 1); ch = (volatile u_int8_t *)virtual_avail; *ch = 0x01; if ((*ch & 0x01) != 0) { *ch = 0x00; if ((*ch & 0x01) == 0) rc = 1; } iounaccess(virtual_avail, 1); if (rc == 0) break; return (1); default: break; } return (0); } /* * Called very early to setup the glass tty as console. * Because it's called before the VM system is initialized, virtual memory * for the framebuffer can be stolen directly without disturbing anything. */ int lcspxcninit() { struct lcspx_screen *ss = &lcspx_consscr; extern vaddr_t virtual_avail; int i; u_int width, height; vaddr_t ova, reg1; u_int32_t magic; long defattr; struct rasops_info *ri; ova = virtual_avail; switch (vax_boardtype) { case VAX_BTYP_420: case VAX_BTYP_43: /* * XXX EVIL KLUGE ALERT! * * The spx jumper settings do not show up in vax_confdata. * I don't know which spx register sports their values, * but I have noticed that, after the ROM has initialized * the board, bit 0x80 at 39b0011c will reflect the * resolution setting. * * This register is not read-only, so one could DEPOSIT * a bogus value in it from the console before starting * OpenBSD. If you do this, you deserve to be bitten * if things go wrong. */ reg1 = virtual_avail; ioaccess(virtual_avail, LCSPX_REG1_ADDR, 1); magic = *(u_int32_t *)(reg1 + 0x11c); iounaccess(virtual_avail, 1); if (magic & 0x80) { width = 1280; height = 1024; } else { width = 1024; height = 864; } break; default: width = 1280; height = 1024; break; } ss->ss_fbsize = width * height; ss->ss_addr = (caddr_t)virtual_avail; ioaccess(virtual_avail, LCSPX_FB_ADDR, ss->ss_fbsize / VAX_NBPG); virtual_avail += ss->ss_fbsize; ss->ss_reg = virtual_avail; ioaccess(virtual_avail, LCSPX_REG_ADDR, LCSPX_REG_SIZE / VAX_NBPG); virtual_avail += LCSPX_REG_SIZE; for (i = 0; i < 4; i++) { ss->ss_ramdac[i] = (volatile u_int8_t *)virtual_avail; ioaccess(virtual_avail, LCSPX_RAMDAC_ADDR + i * LCSPX_RAMDAC_INTERLEAVE, 1); virtual_avail += VAX_NBPG; } virtual_avail = round_page(virtual_avail); /* this had better not fail */ if (lcspx_setup_screen(ss, width, height) != 0) { for (i = 3; i >= 0; i--) iounaccess((vaddr_t)ss->ss_ramdac[i], 1); iounaccess(ss->ss_reg, LCSPX_REG_SIZE / VAX_NBPG); iounaccess((vaddr_t)ss->ss_addr, ss->ss_fbsize / VAX_NBPG); virtual_avail = ova; return (1); } ri = &ss->ss_ri; ri->ri_ops.alloc_attr(ri, 0, 0, 0, &defattr); wsdisplay_cnattach(&lcspx_stdscreen, ri, 0, 0, defattr); return (0); }