igsfb_ofbus.c revision 1.7.16.1
1 /* $NetBSD: igsfb_ofbus.c,v 1.7.16.1 2008/06/02 13:22:39 mjf Exp $ */ 2 3 /* 4 * Copyright (c) 2006 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Integraphics Systems IGA 168x and CyberPro series. 30 * ofbus attachment for Valeriy E. Ushakov's igsfb driver 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: igsfb_ofbus.c,v 1.7.16.1 2008/06/02 13:22:39 mjf Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/buf.h> 42 43 #include <machine/bus.h> 44 #include <machine/intr.h> 45 #include <machine/ofw.h> 46 47 #include <dev/isa/isavar.h> 48 49 #include <dev/wscons/wsdisplayvar.h> 50 #include <dev/wscons/wsconsio.h> 51 #include <dev/rasops/rasops.h> 52 #include <dev/wscons/wsdisplay_vconsvar.h> 53 #include <dev/ofw/openfirm.h> 54 55 #include <dev/ic/igsfbreg.h> 56 #include <dev/ic/igsfbvar.h> 57 #include <shark/ofw/igsfb_ofbusvar.h> 58 59 static int igsfb_ofbus_is_console(int); 60 61 static int igsfb_ofbus_console = 0; 62 static int igsfb_ofbus_phandle = 0; 63 64 65 66 static int igsfb_ofbus_match(struct device *, struct cfdata *, void *); 67 static void igsfb_ofbus_attach(struct device *, struct device *, void *); 68 static int igsfb_setup_dc(struct igsfb_devconfig *); 69 70 CFATTACH_DECL(igsfb_ofbus, sizeof(struct igsfb_softc), 71 igsfb_ofbus_match, igsfb_ofbus_attach, NULL, NULL); 72 73 static const char const *compat_strings[] = { "igs,cyperpro2010", NULL }; 74 75 vaddr_t igsfb_mem_vaddr = 0, igsfb_mmio_vaddr = 0; 76 paddr_t igsfb_mem_paddr; 77 struct bus_space igsfb_memt, igsfb_iot; 78 79 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 80 extern int console_ihandle; 81 #endif 82 83 int 84 igsfb_ofbus_cnattach(bus_space_tag_t iot, bus_space_tag_t memt) 85 { 86 struct igsfb_devconfig *dc; 87 int ret; 88 int chosen_phandle, igs_node; 89 int stdout_ihandle, stdout_phandle; 90 uint32_t regs[16]; 91 92 stdout_phandle = 0; 93 94 /* first find out if there's a CyberPro at all in this machine */ 95 igs_node = OF_finddevice("/vlbus/display"); 96 if (igs_node == -1) 97 return ENXIO; 98 if (of_compatible(igs_node, compat_strings) < 0) 99 return ENXIO; 100 101 /* 102 * now we know there's a CyberPro in this machine so map it into 103 * kernel space, even if it's not the console 104 */ 105 if (OF_getprop(igs_node, "reg", regs, sizeof(regs)) <= 0) 106 return ENXIO; 107 108 igsfb_mem_paddr = be32toh(regs[13]); 109 /* 4MB VRAM */ 110 igsfb_mem_vaddr = ofw_map(igsfb_mem_paddr, 0x00400000, 0); 111 /* MMIO registers */ 112 igsfb_mmio_vaddr = ofw_map(igsfb_mem_paddr + IGS_MEM_MMIO_SELECT, 113 0x00100000, 0); 114 115 memcpy(&igsfb_memt, memt, sizeof(struct bus_space)); 116 igsfb_memt.bs_cookie = (void *)igsfb_mem_vaddr; 117 memcpy(&igsfb_iot, memt, sizeof(struct bus_space)); 118 igsfb_iot.bs_cookie = (void *)igsfb_mmio_vaddr; 119 120 /* 121 * check if the firmware output device is indeed the CyberPro 122 */ 123 if ((chosen_phandle = OF_finddevice("/chosen")) == -1 || 124 OF_getprop(chosen_phandle, "stdout", &stdout_ihandle, 125 sizeof(stdout_ihandle)) != sizeof(stdout_ihandle)) { 126 return ENXIO; 127 } 128 stdout_ihandle = of_decode_int((void *)&stdout_ihandle); 129 stdout_phandle = OF_instance_to_package(stdout_ihandle); 130 131 if (stdout_phandle != igs_node) 132 return ENXIO; 133 134 /* ok, now setup and attach the console */ 135 dc = &igsfb_console_dc; 136 ret = igsfb_setup_dc(dc); 137 if (ret) 138 return ret; 139 140 ret = igsfb_cnattach_subr(dc); 141 if (ret) 142 return ret; 143 144 igsfb_ofbus_console = 1; 145 igsfb_ofbus_phandle = stdout_phandle; 146 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 147 console_ihandle = stdout_ihandle; 148 #endif 149 return 0; 150 } 151 152 static int 153 igsfb_setup_dc(struct igsfb_devconfig *dc) 154 { 155 int ret; 156 157 dc->dc_id = 0x2010; 158 dc->dc_memt = &igsfb_memt; 159 dc->dc_memaddr = 0; 160 dc->dc_memsz= 0x00400000; 161 dc->dc_memflags = 0; 162 163 dc->dc_iot = &igsfb_iot; 164 dc->dc_iobase = 0; 165 dc->dc_ioflags = 0; 166 167 if (bus_space_map(dc->dc_iot, 168 dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE, 169 dc->dc_ioflags, 170 &dc->dc_ioh) != 0) 171 { 172 printf("unable to map I/O registers\n"); 173 return 1; 174 } 175 ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags); 176 if (ret) 177 return ret; 178 return 0; 179 } 180 181 static int 182 igsfb_ofbus_is_console(int phandle) 183 { 184 185 return igsfb_ofbus_console && (phandle == igsfb_ofbus_phandle); 186 } 187 188 189 static int 190 igsfb_ofbus_match(struct device *parent, struct cfdata *match, void *aux) 191 { 192 struct ofbus_attach_args *oba = aux; 193 194 if (of_compatible(oba->oba_phandle, compat_strings) < 0) 195 return 0; 196 197 return 10; /* beat vga etc. */ 198 } 199 200 201 static void 202 igsfb_ofbus_attach(struct device *parent, struct device *self, void *aux) 203 { 204 struct igsfb_softc *sc = (struct igsfb_softc *)self; 205 struct ofbus_attach_args *oba = aux; 206 uint32_t regs[16]; 207 int isconsole, ret; 208 209 if (igsfb_ofbus_is_console(oba->oba_phandle)) { 210 isconsole = 1; 211 sc->sc_dc = &igsfb_console_dc; 212 } else { 213 isconsole = 0; 214 sc->sc_dc = malloc(sizeof(struct igsfb_devconfig), 215 M_DEVBUF, M_NOWAIT | M_ZERO); 216 if (sc->sc_dc == NULL) 217 panic("unable to allocate igsfb_devconfig"); 218 if (OF_getprop(oba->oba_phandle, "reg", 219 regs, sizeof(regs)) <= 0) 220 { 221 printf(": unable to read 'reg' property\n"); 222 return; 223 } 224 ret = igsfb_setup_dc(sc->sc_dc); 225 if (ret) 226 return; 227 } 228 printf(": IGS CyberPro 2010 at 0x%08x\n", (uint32_t)igsfb_mem_paddr); 229 230 igsfb_attach_subr(sc, isconsole); 231 } 232
Indexes created Thu Oct 23 22:10:10 GMT 2025