/* $NetBSD: cgtwo.c,v 1.57 2014/07/25 08:10:34 dholland Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * from: @(#)cgthree.c 8.2 (Berkeley) 10/30/93 */ /* * color display (cgtwo) driver. * * Does not handle interrupts, even though they can occur. * * XXX should defer colormap updates to vertical retrace interrupts */ #include __KERNEL_RCSID(0, "$NetBSD: cgtwo.c,v 1.57 2014/07/25 08:10:34 dholland Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* per-display variables */ struct cgtwo_softc { struct fbdevice sc_fb; /* frame buffer device */ vme_addr_t sc_paddr; vme_chipset_tag_t sc_ct; bus_space_tag_t sc_bt; volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ volatile u_short *sc_cmap; #define sc_redmap(sc) ((sc)->sc_cmap) #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) }; /* autoconfiguration driver */ static int cgtwomatch(device_t, cfdata_t, void *); static void cgtwoattach(device_t, device_t, void *); static void cgtwounblank(device_t); int cgtwogetcmap(struct cgtwo_softc *, struct fbcmap *); int cgtwoputcmap(struct cgtwo_softc *, struct fbcmap *); CFATTACH_DECL_NEW(cgtwo, sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach, NULL, NULL); extern struct cfdriver cgtwo_cd; dev_type_open(cgtwoopen); dev_type_ioctl(cgtwoioctl); dev_type_mmap(cgtwommap); const struct cdevsw cgtwo_cdevsw = { .d_open = cgtwoopen, .d_close = nullclose, .d_read = noread, .d_write = nowrite, .d_ioctl = cgtwoioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = cgtwommap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = 0 }; /* frame buffer generic driver */ static struct fbdriver cgtwofbdriver = { cgtwounblank, cgtwoopen, nullclose, cgtwoioctl, nopoll, cgtwommap, nokqfilter }; /* * Match a cgtwo. */ static int cgtwomatch(device_t parent, cfdata_t cf, void *aux) { struct vme_attach_args *va = aux; vme_chipset_tag_t ct = va->va_vct; vme_am_t mod; /* * Mask out invalid flags from the user. */ cf->cf_flags &= FB_USERMASK; mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 0, 0)) { return (0); } return (1); } /* * Attach a display. We need to notice if it is the console, too. */ static void cgtwoattach(device_t parent, device_t self, void *aux) { struct vme_attach_args *va = aux; vme_chipset_tag_t ct = va->va_vct; bus_space_tag_t bt; bus_space_handle_t bh; vme_am_t mod; vme_mapresc_t resc; struct cgtwo_softc *sc = device_private(self); struct fbdevice *fb = &sc->sc_fb; struct eeprom *eep = (struct eeprom *)eeprom_va; int isconsole = 0; sc->sc_ct = ct; fb->fb_driver = &cgtwofbdriver; fb->fb_device = self; fb->fb_type.fb_type = FBTYPE_SUN2COLOR; fb->fb_flags = device_cfdata(self)->cf_flags; fb->fb_type.fb_depth = 8; fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); fb->fb_type.fb_cmsize = 256; fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, PAGE_SIZE); printf(": cgtwo, %d x %d", fb->fb_type.fb_width, fb->fb_type.fb_height); /* * When the ROM has mapped in a cgtwo display, the address * maps only the video RAM, so in any case we have to map the * registers ourselves. We only need the video RAM if we are * going to print characters via rconsole. */ sc->sc_paddr = va->r[0].offset; mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + offsetof(struct cg2fb, status.reg), sizeof(struct cg2statusreg), mod, VME_D16, 0, &bt, &bh, &resc) != 0) panic("cgtwo: vme_map status"); sc->sc_bt = bt; sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + offsetof(struct cg2fb, redmap[0]), 3 * CG2_CMSIZE, mod, VME_D16, 0, &bt, &bh, &resc) != 0) panic("cgtwo: vme_map cmap"); sc->sc_cmap = (volatile u_short *)bh; /* XXX */ /* * Assume this is the console if there's no eeprom info * to be found. */ if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) isconsole = fb_is_console(0); else isconsole = 0; if (isconsole) { if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, CG2_PIXMAP_SIZE, mod, VME_D16, 0, &bt, &bh, &resc) != 0) panic("cgtwo: vme_map pixels"); fb->fb_pixels = (void *)bh; /* XXX */ printf(" (console)\n"); #ifdef RASTERCONSOLE fbrcons_init(fb); #endif } else printf("\n"); fb_attach(fb, isconsole); } int cgtwoopen(dev_t dev, int flags, int mode, struct lwp *l) { int unit = minor(dev); if (device_lookup(&cgtwo_cd, unit) == NULL) return (ENXIO); return (0); } int cgtwoioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) { register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, minor(dev)); register struct fbgattr *fba; switch (cmd) { case FBIOGTYPE: *(struct fbtype *)data = sc->sc_fb.fb_type; break; case FBIOGATTR: fba = (struct fbgattr *)data; fba->real_type = sc->sc_fb.fb_type.fb_type; fba->owner = 0; /* XXX ??? */ fba->fbtype = sc->sc_fb.fb_type; fba->sattr.flags = 0; fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; fba->sattr.dev_specific[0] = -1; fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; fba->emu_types[1] = -1; break; case FBIOGETCMAP: return cgtwogetcmap(sc, (struct fbcmap *) data); case FBIOPUTCMAP: return cgtwoputcmap(sc, (struct fbcmap *) data); case FBIOGVIDEO: *(int *)data = sc->sc_reg->video_enab; break; case FBIOSVIDEO: sc->sc_reg->video_enab = (*(int*)data) & 1; break; default: return (ENOTTY); } return (0); } /* * Undo the effect of an FBIOSVIDEO that turns the video off. */ static void cgtwounblank(device_t dev) { struct cgtwo_softc *sc = device_private(dev); sc->sc_reg->video_enab = 1; } /* */ int cgtwogetcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) { u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; int error, start, count, ecount; register u_int i; register volatile u_short *p; start = cmap->index; count = cmap->count; ecount = start + count; if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) return (EINVAL); /* XXX - Wait for retrace? */ /* Copy hardware to local arrays. */ p = &sc_redmap(sc)[start]; for (i = start; i < ecount; i++) red[i] = *p++; p = &sc_greenmap(sc)[start]; for (i = start; i < ecount; i++) green[i] = *p++; p = &sc_bluemap(sc)[start]; for (i = start; i < ecount; i++) blue[i] = *p++; /* Copy local arrays to user space. */ if ((error = copyout(red + start, cmap->red, count)) != 0) return (error); if ((error = copyout(green + start, cmap->green, count)) != 0) return (error); if ((error = copyout(blue + start, cmap->blue, count)) != 0) return (error); return (0); } /* */ int cgtwoputcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) { u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; int error; u_int start, count, ecount; register u_int i; register volatile u_short *p; start = cmap->index; count = cmap->count; ecount = start + count; if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) return (EINVAL); /* Copy from user space to local arrays. */ if ((error = copyin(cmap->red, red + start, count)) != 0) return (error); if ((error = copyin(cmap->green, green + start, count)) != 0) return (error); if ((error = copyin(cmap->blue, blue + start, count)) != 0) return (error); /* XXX - Wait for retrace? */ /* Copy from local arrays to hardware. */ p = &sc_redmap(sc)[start]; for (i = start; i < ecount; i++) *p++ = red[i]; p = &sc_greenmap(sc)[start]; for (i = start; i < ecount; i++) *p++ = green[i]; p = &sc_bluemap(sc)[start]; for (i = start; i < ecount; i++) *p++ = blue[i]; return (0); } /* * Return the address that would map the given device at the given * offset, allowing for the given protection, or return -1 for error. */ paddr_t cgtwommap(dev_t dev, off_t off, int prot) { extern int sparc_vme_mmap_cookie(vme_addr_t, vme_am_t, bus_space_handle_t *); register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, minor(dev)); vme_am_t mod; bus_space_handle_t bh; if (off & PGOFSET) panic("cgtwommap"); if (off >= sc->sc_fb.fb_type.fb_size) return (-1); /* Apparently, the pixels are in 32-bit data space */ mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) panic("cgtwommap"); return ((paddr_t)bh); }