igsfb_ofbus.c revision 1.9
1 /* $NetBSD: igsfb_ofbus.c,v 1.9 2009/11/10 22:24:57 macallan 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 1.9 2009/11/10 22:24:57 macallan 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 static paddr_t igsfb_ofbus_mmap(void *, void *, off_t, int); 70 71 CFATTACH_DECL(igsfb_ofbus, sizeof(struct igsfb_softc), 72 igsfb_ofbus_match, igsfb_ofbus_attach, NULL, NULL); 73 74 static const char const *compat_strings[] = { "igs,cyperpro2010", NULL }; 75 76 vaddr_t igsfb_mem_vaddr = 0, igsfb_mmio_vaddr = 0; 77 paddr_t igsfb_mem_paddr; 78 extern paddr_t isa_io_physaddr; 79 struct bus_space igsfb_memt, igsfb_iot; 80 81 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 82 extern int console_ihandle; 83 #endif 84 85 int 86 igsfb_ofbus_cnattach(bus_space_tag_t iot, bus_space_tag_t memt) 87 { 88 struct igsfb_devconfig *dc; 89 int ret; 90 int chosen_phandle, igs_node; 91 int stdout_ihandle, stdout_phandle; 92 uint32_t regs[16]; 93 94 stdout_phandle = 0; 95 96 /* first find out if there's a CyberPro at all in this machine */ 97 igs_node = OF_finddevice("/vlbus/display"); 98 if (igs_node == -1) 99 return ENXIO; 100 if (of_compatible(igs_node, compat_strings) < 0) 101 return ENXIO; 102 103 /* 104 * now we know there's a CyberPro in this machine so map it into 105 * kernel space, even if it's not the console 106 */ 107 if (OF_getprop(igs_node, "reg", regs, sizeof(regs)) <= 0) 108 return ENXIO; 109 110 igsfb_mem_paddr = be32toh(regs[13]); 111 /* 4MB VRAM aperture, bufferable and cacheable */ 112 igsfb_mem_vaddr = ofw_map(igsfb_mem_paddr, 0x00400000, L2_B | L2_C); 113 /* MMIO registers */ 114 igsfb_mmio_vaddr = ofw_map(igsfb_mem_paddr + IGS_MEM_MMIO_SELECT, 115 0x00100000, 0); 116 117 memcpy(&igsfb_memt, memt, sizeof(struct bus_space)); 118 igsfb_memt.bs_cookie = (void *)igsfb_mem_vaddr; 119 memcpy(&igsfb_iot, memt, sizeof(struct bus_space)); 120 igsfb_iot.bs_cookie = (void *)igsfb_mmio_vaddr; 121 122 /* 123 * check if the firmware output device is indeed the CyberPro 124 */ 125 if ((chosen_phandle = OF_finddevice("/chosen")) == -1 || 126 OF_getprop(chosen_phandle, "stdout", &stdout_ihandle, 127 sizeof(stdout_ihandle)) != sizeof(stdout_ihandle)) { 128 return ENXIO; 129 } 130 stdout_ihandle = of_decode_int((void *)&stdout_ihandle); 131 stdout_phandle = OF_instance_to_package(stdout_ihandle); 132 133 if (stdout_phandle != igs_node) 134 return ENXIO; 135 136 /* ok, now setup and attach the console */ 137 dc = &igsfb_console_dc; 138 ret = igsfb_setup_dc(dc); 139 if (ret) 140 return ret; 141 142 ret = igsfb_cnattach_subr(dc); 143 if (ret) 144 return ret; 145 146 igsfb_ofbus_console = 1; 147 igsfb_ofbus_phandle = stdout_phandle; 148 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 149 console_ihandle = stdout_ihandle; 150 #endif 151 return 0; 152 } 153 154 static int 155 igsfb_setup_dc(struct igsfb_devconfig *dc) 156 { 157 int ret; 158 159 dc->dc_id = 0x2010; 160 dc->dc_memt = &igsfb_memt; 161 dc->dc_memaddr = 0; 162 dc->dc_memsz= 0x00400000; 163 dc->dc_memflags = 0; 164 165 dc->dc_iot = &igsfb_iot; 166 dc->dc_iobase = 0; 167 dc->dc_ioflags = 0; 168 dc->dc_mmap = igsfb_ofbus_mmap; 169 if (bus_space_map(dc->dc_iot, 170 dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE, 171 dc->dc_ioflags, 172 &dc->dc_ioh) != 0) 173 { 174 printf("unable to map I/O registers\n"); 175 return 1; 176 } 177 ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags); 178 if (ret) 179 return ret; 180 return 0; 181 } 182 183 static int 184 igsfb_ofbus_is_console(int phandle) 185 { 186 187 return igsfb_ofbus_console && (phandle == igsfb_ofbus_phandle); 188 } 189 190 191 static int 192 igsfb_ofbus_match(struct device *parent, struct cfdata *match, void *aux) 193 { 194 struct ofbus_attach_args *oba = aux; 195 196 if (of_compatible(oba->oba_phandle, compat_strings) < 0) 197 return 0; 198 199 return 10; /* beat vga etc. */ 200 } 201 202 203 static void 204 igsfb_ofbus_attach(struct device *parent, struct device *self, void *aux) 205 { 206 struct igsfb_softc *sc = (struct igsfb_softc *)self; 207 struct ofbus_attach_args *oba = aux; 208 uint32_t regs[16]; 209 int isconsole, ret; 210 211 if (igsfb_ofbus_is_console(oba->oba_phandle)) { 212 isconsole = 1; 213 sc->sc_dc = &igsfb_console_dc; 214 } else { 215 isconsole = 0; 216 sc->sc_dc = malloc(sizeof(struct igsfb_devconfig), 217 M_DEVBUF, M_NOWAIT | M_ZERO); 218 if (sc->sc_dc == NULL) 219 panic("unable to allocate igsfb_devconfig"); 220 if (OF_getprop(oba->oba_phandle, "reg", 221 regs, sizeof(regs)) <= 0) 222 { 223 printf(": unable to read 'reg' property\n"); 224 return; 225 } 226 ret = igsfb_setup_dc(sc->sc_dc); 227 if (ret) 228 return; 229 } 230 printf(": IGS CyberPro 2010 at 0x%08x\n", (uint32_t)igsfb_mem_paddr); 231 232 igsfb_attach_subr(sc, isconsole); 233 } 234 235 static paddr_t 236 igsfb_ofbus_mmap(void *v, void *vs, off_t offset, int prot) 237 { 238 239 #ifdef PCI_MAGIC_IO_RANGE 240 /* access to IO ports */ 241 if ((offset >= PCI_MAGIC_IO_RANGE) && 242 (offset < (PCI_MAGIC_IO_RANGE + 0x10000))) { 243 paddr_t pa; 244 245 pa = isa_io_physaddr + offset - PCI_MAGIC_IO_RANGE; 246 return arm_btop(pa); 247 } 248 #endif 249 /* 250 * we also need to allow mapping of the whole aperture, including MMIO 251 * registers on CyberPro at its physical address 252 */ 253 if ((offset >= igsfb_mem_paddr) && 254 (offset < (igsfb_mem_paddr + 0x01000000))) 255 return arm_btop(offset); 256 257 return -1; 258 } 259
Indexes created Tue Sep 30 17:09:57 GMT 2025