/* $NetBSD: ofb.c,v 1.41 2004/12/17 05:44:12 briggs 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 __KERNEL_RCSID(0, "$NetBSD: ofb.c,v 1.41 2004/12/17 05:44:12 briggs Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if OFB_ENABLE_CACHE int ofb_enable_cache = 1; #else int ofb_enable_cache = 0; #endif int ofbmatch __P((struct device *, struct cfdata *, void *)); void ofbattach __P((struct device *, struct device *, void *)); int ofbprint __P((void *, const char *)); CFATTACH_DECL(ofb, sizeof(struct ofb_softc), ofbmatch, ofbattach, NULL, NULL); struct ofb_devconfig ofb_console_dc; struct wsscreen_descr ofb_stdscreen = { "std", 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 0, 0, 0, WSSCREEN_REVERSE }; const struct wsscreen_descr *_ofb_scrlist[] = { &ofb_stdscreen, /* XXX other formats, graphics screen? */ }; struct wsscreen_list ofb_screenlist = { sizeof(_ofb_scrlist) / sizeof(struct wsscreen_descr *), _ofb_scrlist }; static int ofb_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); static paddr_t ofb_mmap __P((void *, off_t, int)); static int ofb_alloc_screen __P((void *, const struct wsscreen_descr *, void **, int *, int *, long *)); static void ofb_free_screen __P((void *, void *)); static int ofb_show_screen __P((void *, void *, int, void (*) (void *, int, int), void *)); static int copy_rom_font __P((void)); struct wsdisplay_accessops ofb_accessops = { ofb_ioctl, ofb_mmap, ofb_alloc_screen, ofb_free_screen, ofb_show_screen, 0 /* load_font */ }; static struct wsdisplay_font openfirm6x11; static void ofb_common_init __P((int, struct ofb_devconfig *)); static int ofb_getcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); static int ofb_putcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); int ofbmatch(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_CONTROL) return 1; if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY) return 1; return 0; } void ofbattach(parent, self, aux) struct device *parent, *self; void *aux; { struct ofb_softc *sc = (struct ofb_softc *)self; struct pci_attach_args *pa = aux; struct wsemuldisplaydev_attach_args a; int console, node; struct ofb_devconfig *dc; char devinfo[256]; console = ofb_is_console(); if (console) { dc = &ofb_console_dc; node = dc->dc_node; sc->nscreens = 1; } else { int len; dc = malloc(sizeof(struct ofb_devconfig), M_DEVBUF, M_WAITOK); memset(dc, 0, sizeof(struct ofb_devconfig)); node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); if (node == 0) { printf(": ofdev not found\n"); return; } /* XXX There are two child screens on PowerBook. */ memset(devinfo, 0, sizeof(devinfo)); OF_getprop(node, "device_type", devinfo, sizeof(devinfo)); len = strlen(devinfo); if (strcmp(devinfo + len - 7, "-parent") == 0) node = OF_child(node); ofb_common_init(node, dc); } sc->sc_dc = dc; sc->sc_pc = pa->pa_pc; sc->sc_pcitag = pa->pa_tag; /* XXX */ if (OF_getprop(node, "assigned-addresses", sc->sc_addrs, sizeof(sc->sc_addrs)) == -1) { node = OF_parent(node); OF_getprop(node, "assigned-addresses", sc->sc_addrs, sizeof(sc->sc_addrs)); } if (dc->dc_paddr == 0) { printf(": cannot map framebuffer\n"); return; } /* * Clear the screen here, instead of above, in case * ofb_common_init() failed to map the framebuffer. */ if (!console) { int i, screenbytes; screenbytes = dc->dc_ri.ri_stride * dc->dc_ri.ri_height; for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; } pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); printf(": %s\n", devinfo); printf("%s: %d x %d, %dbpp\n", self->dv_xname, dc->dc_ri.ri_width, dc->dc_ri.ri_height, dc->dc_ri.ri_depth); sc->sc_cmap_red[0] = sc->sc_cmap_green[0] = sc->sc_cmap_blue[0] = 0; sc->sc_cmap_red[15] = sc->sc_cmap_red[255] = 0xff; sc->sc_cmap_green[15] = sc->sc_cmap_green[255] = 0xff; sc->sc_cmap_blue[15] = sc->sc_cmap_blue[255] = 0xff; a.console = console; a.scrdata = &ofb_screenlist; a.accessops = &ofb_accessops; a.accesscookie = sc; config_found(self, &a, wsemuldisplaydevprint); } void ofb_common_init(node, dc) int node; struct ofb_devconfig *dc; { struct rasops_info *ri = &dc->dc_ri; int32_t addr, width, height, linebytes, depth; dc->dc_node = node; if (dc->dc_ih == 0) { char name[64]; memset(name, 0, 64); OF_package_to_path(node, name, sizeof(name)); dc->dc_ih = OF_open(name); } /* XXX /chaos/control doesn't have "width", "height", ... */ width = height = -1; if (OF_getprop(node, "width", &width, 4) != 4) OF_interpret("screen-width", 1, &width); if (OF_getprop(node, "height", &height, 4) != 4) OF_interpret("screen-height", 1, &height); if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) linebytes = width; /* XXX */ if (OF_getprop(node, "depth", &depth, 4) != 4) depth = 8; /* XXX */ if (OF_getprop(node, "address", &addr, 4) != 4) OF_interpret("frame-buffer-adr", 1, &addr); if (width == -1 || height == -1 || addr == 0 || addr == -1) return; dc->dc_paddr = addr; /* PA of the frame buffer */ /* Make sure 0/0/0 is black and 255/255/255 is white. */ OF_call_method_1("color!", dc->dc_ih, 4, 0, 0, 0, 0); OF_call_method_1("color!", dc->dc_ih, 4, 255, 255, 255, 255); /* Enable write-through cache. */ if (ofb_enable_cache) { vaddr_t va; /* * Let's try to find an empty BAT to use */ for (va = SEGMENT_LENGTH; va < (USER_SR << ADDR_SR_SHFT); va += SEGMENT_LENGTH) { if (battable[va >> ADDR_SR_SHFT].batu == 0) { battable[va >> ADDR_SR_SHFT].batl = BATL(addr & 0xf0000000, BAT_G | BAT_W | BAT_M, BAT_PP_RW); battable[va >> ADDR_SR_SHFT].batu = BATL(va, BAT_BL_256M, BAT_Vs); addr &= 0x0fffffff; addr |= va; break; } } } /* initialize rasops */ ri->ri_width = width; ri->ri_height = height; ri->ri_depth = depth; ri->ri_stride = linebytes; ri->ri_bits = (char *)addr; ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR | RI_CENTER; /* If screen is smaller than 1024x768, use small font. */ if ((width < 1024 || height < 768) && copy_rom_font() == 0) { int cols, rows; OF_interpret("#lines", 1, &rows); OF_interpret("#columns", 1, &cols); ri->ri_font = &openfirm6x11; ri->ri_wsfcookie = -1; /* not using wsfont */ rasops_init(ri, rows, cols); ri->ri_xorigin = 2; ri->ri_yorigin = 3; ri->ri_bits = (char *)addr + ri->ri_xorigin + ri->ri_stride * ri->ri_yorigin; } else { rasops_init(ri, 24, 80); rasops_reconfig(ri, (height - 2) / ri->ri_font->fontheight, ((width - 2) / ri->ri_font->fontwidth) & ~7); } /* black on white */ ri->ri_devcmap[0] = 0xffffffff; /* bg */ ri->ri_devcmap[1] = 0; /* fg */ ofb_stdscreen.nrows = ri->ri_rows; ofb_stdscreen.ncols = ri->ri_cols; ofb_stdscreen.textops = &ri->ri_ops; ofb_stdscreen.capabilities = ri->ri_caps; } int ofb_is_console() { int chosen, stdout, node; char type[16]; chosen = OF_finddevice("/chosen"); OF_getprop(chosen, "stdout", &stdout, 4); node = OF_instance_to_package(stdout); OF_getprop(node, "device_type", type, sizeof(type)); if (strcmp(type, "display") == 0) return 1; else return 0; } int ofb_ioctl(v, cmd, data, flag, p) void *v; u_long cmd; caddr_t data; int flag; struct proc *p; { struct ofb_softc *sc = v; struct ofb_devconfig *dc = sc->sc_dc; struct wsdisplay_fbinfo *wdf; struct grfinfo *gm; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */ return 0; case WSDISPLAYIO_GINFO: wdf = (void *)data; wdf->height = dc->dc_ri.ri_height; wdf->width = dc->dc_ri.ri_width; wdf->depth = dc->dc_ri.ri_depth; wdf->cmsize = 256; return 0; case WSDISPLAYIO_GETCMAP: return ofb_getcmap(sc, (struct wsdisplay_cmap *)data); case WSDISPLAYIO_PUTCMAP: return ofb_putcmap(sc, (struct wsdisplay_cmap *)data); /* XXX There are no way to know framebuffer pa from a user program. */ case GRFIOCGINFO: gm = (void *)data; memset(gm, 0, sizeof(struct grfinfo)); gm->gd_fbaddr = (caddr_t)dc->dc_paddr; gm->gd_fbrowbytes = dc->dc_ri.ri_stride; return 0; /* PCI config read/write passthrough. */ case PCI_IOC_CFGREAD: case PCI_IOC_CFGWRITE: return (pci_devioctl(sc->sc_pc, sc->sc_pcitag, cmd, data, flag, p)); } return EPASSTHROUGH; } paddr_t ofb_mmap(v, offset, prot) void *v; off_t offset; int prot; { struct ofb_softc *sc = v; struct ofb_devconfig *dc = sc->sc_dc; struct rasops_info *ri = &dc->dc_ri; u_int32_t *ap = sc->sc_addrs; paddr_t pa; int i; if (offset >=0 && offset < (ri->ri_stride * ri->ri_height)) return dc->dc_paddr + offset; pa = offset; for (i = 0; i < 6; i++) { switch (ap[0] & OFW_PCI_PHYS_HI_SPACEMASK) { case OFW_PCI_PHYS_HI_SPACE_MEM32: if (pa >= ap[2] && pa < ap[2] + ap[4]) return pa; /* XXX I/O space? */ } ap += 5; } return -1; } int ofb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) void *v; const struct wsscreen_descr *type; void **cookiep; int *curxp, *curyp; long *attrp; { struct ofb_softc *sc = v; struct rasops_info *ri = &sc->sc_dc->dc_ri; long defattr; if (sc->nscreens > 0) return (ENOMEM); *cookiep = ri; /* one and only for now */ *curxp = 0; *curyp = 0; (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); *attrp = defattr; sc->nscreens++; return 0; } void ofb_free_screen(v, cookie) void *v; void *cookie; { struct ofb_softc *sc = v; if (sc->sc_dc == &ofb_console_dc) panic("ofb_free_screen: console"); sc->nscreens--; } int ofb_show_screen(v, cookie, waitok, cb, cbarg) void *v; void *cookie; int waitok; void (*cb) __P((void *, int, int)); void *cbarg; { return (0); } int ofb_cnattach() { struct ofb_devconfig *dc = &ofb_console_dc; struct rasops_info *ri = &dc->dc_ri; long defattr; int crow = 0; int chosen, stdout, node; chosen = OF_finddevice("/chosen"); OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); node = OF_instance_to_package(stdout); dc->dc_ih = stdout; /* get current cursor position */ OF_interpret("line#", 1, &crow); /* move (rom monitor) cursor to the lowest line - 1 */ OF_interpret("#lines 2 - to line#", 0); ofb_common_init(node, dc); if (ri->ri_width >= 1024 && ri->ri_height >= 768) { int i, screenbytes = ri->ri_stride * ri->ri_height; for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; crow = 0; } (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); wsdisplay_cnattach(&ofb_stdscreen, ri, 0, crow, defattr); return 0; } int copy_rom_font() { u_char *romfont; int char_width, char_height; int chosen, mmu, m, e; /* Get ROM FONT address. */ OF_interpret("font-adr", 1, &romfont); if (romfont == NULL) return -1; chosen = OF_finddevice("/chosen"); OF_getprop(chosen, "mmu", &mmu, 4); /* * Convert to physcal address. We cannot access to Open Firmware's * virtual address space. */ OF_call_method("translate", mmu, 1, 3, romfont, &romfont, &m, &e); /* Get character size */ OF_interpret("char-width", 1, &char_width); OF_interpret("char-height", 1, &char_height); openfirm6x11.name = "Open Firmware"; openfirm6x11.firstchar = 32; openfirm6x11.numchars = 96; openfirm6x11.encoding = WSDISPLAY_FONTENC_ISO; openfirm6x11.fontwidth = char_width; openfirm6x11.fontheight = char_height; openfirm6x11.stride = 1; openfirm6x11.bitorder = WSDISPLAY_FONTORDER_L2R; openfirm6x11.byteorder = WSDISPLAY_FONTORDER_L2R; openfirm6x11.data = romfont; return 0; } int ofb_getcmap(sc, cm) struct ofb_softc *sc; struct wsdisplay_cmap *cm; { u_int index = cm->index; u_int count = cm->count; int error; if (index >= 256 || count > 256 || index + count > 256) return EINVAL; error = copyout(&sc->sc_cmap_red[index], cm->red, count); if (error) return error; error = copyout(&sc->sc_cmap_green[index], cm->green, count); if (error) return error; error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); if (error) return error; return 0; } int ofb_putcmap(sc, cm) struct ofb_softc *sc; struct wsdisplay_cmap *cm; { struct ofb_devconfig *dc = sc->sc_dc; u_int index = cm->index; u_int count = cm->count; int i, error; u_char rbuf[256], gbuf[256], bbuf[256]; u_char *r, *g, *b; if (cm->index >= 256 || cm->count > 256 || (cm->index + cm->count) > 256) return EINVAL; error = copyin(cm->red, &rbuf[index], count); if (error) return error; error = copyin(cm->green, &gbuf[index], count); if (error) return error; error = copyin(cm->blue, &bbuf[index], count); if (error) return error; memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); r = &sc->sc_cmap_red[index]; g = &sc->sc_cmap_green[index]; b = &sc->sc_cmap_blue[index]; for (i = 0; i < count; i++) { OF_call_method_1("color!", dc->dc_ih, 4, *r, *g, *b, index); r++, g++, b++, index++; } return 0; }