1 /* $NetBSD: genfb_sbus.c,v 1.3 2007/10/19 12:01:11 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of The NetBSD Foundation nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* an SBus frontend for the generic fb console driver */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: genfb_sbus.c,v 1.3 2007/10/19 12:01:11 ad Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/buf.h> 40 #include <sys/device.h> 41 #include <sys/ioctl.h> 42 #include <sys/conf.h> 43 44 #include <uvm/uvm.h> 45 46 #include <sys/bus.h> 47 #include <machine/autoconf.h> 48 #include <machine/pmap.h> 49 50 #include <dev/sbus/sbusvar.h> 51 #include <dev/sun/fbio.h> 52 #include <dev/sun/fbvar.h> 53 54 #include <dev/wsfb/genfbvar.h> 55 56 struct genfb_sbus_softc { 57 struct genfb_softc sc_gen; 58 struct sbusdev sc_sd; 59 bus_space_tag_t sc_tag; 60 paddr_t sc_paddr; 61 }; 62 63 static int genfb_match_sbus(struct device *, struct cfdata *, void *); 64 static void genfb_attach_sbus(struct device *, struct device *, void *); 65 static int genfb_ioctl_sbus(void *, void *, u_long, void *, int, 66 struct lwp*); 67 static paddr_t genfb_mmap_sbus(void *, void *, off_t, int); 68 69 CFATTACH_DECL(genfb_sbus, sizeof(struct genfb_sbus_softc), 70 genfb_match_sbus, genfb_attach_sbus, NULL, NULL); 71 72 /* 73 * Match a graphics device. 74 */ 75 static int 76 genfb_match_sbus(struct device *parent, struct cfdata *cf, void *aux) 77 { 78 struct sbus_attach_args *sa = aux; 79 80 /* if there's no address property we can't use the device */ 81 if (prom_getpropint(sa->sa_node, "address", -1) == -1) 82 return 0; 83 if (strcmp("display", prom_getpropstring(sa->sa_node, "device_type")) 84 == 0) 85 return 1; 86 87 return 0; 88 } 89 90 /* 91 * Attach a display. We need to notice if it is the console, too. 92 */ 93 static void 94 genfb_attach_sbus(struct device *parent, struct device *self, void *args) 95 { 96 struct genfb_sbus_softc *sc = (struct genfb_sbus_softc *)self; 97 struct sbusdev *sd = &sc->sc_sd; 98 struct sbus_attach_args *sa = args; 99 struct genfb_ops ops; 100 prop_dictionary_t dict; 101 bus_space_handle_t bh; 102 paddr_t fbpa; 103 vaddr_t fbva; 104 int node = sa->sa_node; 105 int isconsole; 106 107 aprint_normal("\n"); 108 /* Remember cookies for genfb_mmap_sbus() */ 109 sc->sc_tag = sa->sa_bustag; 110 sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset); 111 112 /* read geometry information from the device tree */ 113 sc->sc_gen.sc_width = prom_getpropint(sa->sa_node, "width", 1152); 114 sc->sc_gen.sc_height = prom_getpropint(sa->sa_node, "height", 900); 115 sc->sc_gen.sc_depth = prom_getpropint(sa->sa_node, "depth", 8); 116 sc->sc_gen.sc_stride = prom_getpropint(sa->sa_node, "linebytes", 117 (sc->sc_gen.sc_width * sc->sc_gen.sc_depth + 7) >> 3 ); 118 sc->sc_gen.sc_fbsize = sc->sc_gen.sc_height * sc->sc_gen.sc_stride; 119 fbva = (uint32_t)prom_getpropint(sa->sa_node, "address", 0); 120 if (fbva == 0) 121 panic("this fb has no address property\n"); 122 aprint_normal("%s: %d x %d at %d bit\n", self->dv_xname, 123 sc->sc_gen.sc_width, sc->sc_gen.sc_height, sc->sc_gen.sc_depth); 124 125 pmap_extract(pmap_kernel(), fbva, &fbpa); 126 sc->sc_gen.sc_fboffset = (fbpa & 0x01ffffff) - 127 (sc->sc_paddr & 0x01ffffff); 128 aprint_normal("%s: framebuffer at offset 0x%x\n", self->dv_xname, 129 (uint32_t)sc->sc_gen.sc_fboffset); 130 131 #if notyet 132 if (sc->sc_gen.sc_depth <= 8) { 133 /* setup some ANSIish colour map */ 134 char boo[256]; 135 snprintf(boo, 256, "\" pal!\" %x %x %x %x %x call", 136 sa->sa_node, 0, 0xa0, 0xa0, 0); 137 prom_interpret(boo); 138 } 139 #endif 140 141 isconsole = fb_is_console(node); 142 dict = device_properties(self); 143 prop_dictionary_set_bool(dict, "is_console", isconsole); 144 145 if (sbus_bus_map(sa->sa_bustag, 146 sa->sa_slot, 147 sa->sa_offset + sc->sc_gen.sc_fboffset, 148 sc->sc_gen.sc_fbsize, 149 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 150 printf("%s: cannot map framebuffer\n", self->dv_xname); 151 return; 152 } 153 sc->sc_gen.sc_fbaddr = (void *)bus_space_vaddr(sa->sa_bustag, bh); 154 155 sbus_establish(sd, self); 156 ops.genfb_ioctl = genfb_ioctl_sbus; 157 ops.genfb_mmap = genfb_mmap_sbus; 158 159 genfb_attach(&sc->sc_gen, &ops); 160 } 161 162 static int 163 genfb_ioctl_sbus(void *v, void *vs, u_long cmd, void *data, int flag, 164 struct lwp *l) 165 { 166 167 switch (cmd) { 168 case WSDISPLAYIO_GTYPE: 169 *(u_int *)data = WSDISPLAY_TYPE_GENFB; 170 return 0; 171 } 172 173 return EPASSTHROUGH; 174 } 175 176 static paddr_t 177 genfb_mmap_sbus(void *v, void *vs, off_t offset, int prot) 178 { 179 struct genfb_sbus_softc *sc = v; 180 181 /* regular fb mapping at 0 */ 182 if ((offset >= 0) && (offset < sc->sc_gen.sc_fbsize)) { 183 184 return bus_space_mmap(sc->sc_tag, sc->sc_paddr, 185 sc->sc_gen.sc_fboffset + offset, prot, 186 BUS_SPACE_MAP_LINEAR); 187 } 188 189 return -1; 190 } 191