igsfb_ofbus.c revision 1.10
1 /* $NetBSD: igsfb_ofbus.c,v 1.10 2009/11/11 17:05:11 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 1.10 2009/11/11 17:05:11 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 char mode_buffer[64]; 94 95 stdout_phandle = 0; 96 97 /* first find out if there's a CyberPro at all in this machine */ 98 igs_node = OF_finddevice("/vlbus/display"); 99 if (igs_node == -1) 100 return ENXIO; 101 if (of_compatible(igs_node, compat_strings) < 0) 102 return ENXIO; 103 104 /* 105 * now we know there's a CyberPro in this machine so map it into 106 * kernel space, even if it's not the console 107 */ 108 if (OF_getprop(igs_node, "reg", regs, sizeof(regs)) <= 0) 109 return ENXIO; 110 111 igsfb_mem_paddr = be32toh(regs[13]); 112 /* 4MB VRAM aperture, bufferable and cacheable */ 113 igsfb_mem_vaddr = ofw_map(igsfb_mem_paddr, 0x00400000, L2_B | L2_C); 114 /* MMIO registers */ 115 igsfb_mmio_vaddr = ofw_map(igsfb_mem_paddr + IGS_MEM_MMIO_SELECT, 116 0x00100000, 0); 117 118 memcpy(&igsfb_memt, memt, sizeof(struct bus_space)); 119 igsfb_memt.bs_cookie = (void *)igsfb_mem_vaddr; 120 memcpy(&igsfb_iot, memt, sizeof(struct bus_space)); 121 igsfb_iot.bs_cookie = (void *)igsfb_mmio_vaddr; 122 123 /* 124 * check if the firmware output device is indeed the CyberPro 125 */ 126 if ((chosen_phandle = OF_finddevice("/chosen")) == -1 || 127 OF_getprop(chosen_phandle, "stdout", &stdout_ihandle, 128 sizeof(stdout_ihandle)) != sizeof(stdout_ihandle)) { 129 return ENXIO; 130 } 131 stdout_ihandle = of_decode_int((void *)&stdout_ihandle); 132 stdout_phandle = OF_instance_to_package(stdout_ihandle); 133 134 if (stdout_phandle != igs_node) 135 return ENXIO; 136 137 /* ok, now setup and attach the console */ 138 dc = &igsfb_console_dc; 139 ret = igsfb_setup_dc(dc); 140 if (ret) 141 return ret; 142 143 if (of_get_mode_string(mode_buffer, sizeof(mode_buffer))) { 144 strcpy(dc->dc_modestring, mode_buffer); 145 } 146 147 ret = igsfb_cnattach_subr(dc); 148 if (ret) 149 return ret; 150 151 igsfb_ofbus_console = 1; 152 igsfb_ofbus_phandle = stdout_phandle; 153 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 154 console_ihandle = stdout_ihandle; 155 #endif 156 return 0; 157 } 158 159 static int 160 igsfb_setup_dc(struct igsfb_devconfig *dc) 161 { 162 int ret; 163 164 dc->dc_id = 0x2010; 165 dc->dc_memt = &igsfb_memt; 166 dc->dc_memaddr = 0; 167 dc->dc_memsz= 0x00400000; 168 dc->dc_memflags = 0; 169 170 dc->dc_iot = &igsfb_iot; 171 dc->dc_iobase = 0; 172 dc->dc_ioflags = 0; 173 dc->dc_mmap = igsfb_ofbus_mmap; 174 if (bus_space_map(dc->dc_iot, 175 dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE, 176 dc->dc_ioflags, 177 &dc->dc_ioh) != 0) 178 { 179 printf("unable to map I/O registers\n"); 180 return 1; 181 } 182 ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags); 183 if (ret) 184 return ret; 185 return 0; 186 } 187 188 static int 189 igsfb_ofbus_is_console(int phandle) 190 { 191 192 return igsfb_ofbus_console && (phandle == igsfb_ofbus_phandle); 193 } 194 195 196 static int 197 igsfb_ofbus_match(struct device *parent, struct cfdata *match, void *aux) 198 { 199 struct ofbus_attach_args *oba = aux; 200 201 if (of_compatible(oba->oba_phandle, compat_strings) < 0) 202 return 0; 203 204 return 10; /* beat vga etc. */ 205 } 206 207 static void 208 igsfb_ofbus_attach(struct device *parent, struct device *self, void *aux) 209 { 210 struct igsfb_softc *sc = (struct igsfb_softc *)self; 211 struct ofbus_attach_args *oba = aux; 212 uint32_t regs[16]; 213 int isconsole, ret; 214 215 if (igsfb_ofbus_is_console(oba->oba_phandle)) { 216 isconsole = 1; 217 sc->sc_dc = &igsfb_console_dc; 218 } else { 219 isconsole = 0; 220 sc->sc_dc = malloc(sizeof(struct igsfb_devconfig), 221 M_DEVBUF, M_NOWAIT | M_ZERO); 222 if (sc->sc_dc == NULL) 223 panic("unable to allocate igsfb_devconfig"); 224 if (OF_getprop(oba->oba_phandle, "reg", 225 regs, sizeof(regs)) <= 0) 226 { 227 printf(": unable to read 'reg' property\n"); 228 return; 229 } 230 ret = igsfb_setup_dc(sc->sc_dc); 231 if (ret) 232 return; 233 } 234 printf(": IGS CyberPro 2010 at 0x%08x\n", (uint32_t)igsfb_mem_paddr); 235 236 igsfb_attach_subr(sc, isconsole); 237 } 238 239 static paddr_t 240 igsfb_ofbus_mmap(void *v, void *vs, off_t offset, int prot) 241 { 242 243 #ifdef PCI_MAGIC_IO_RANGE 244 /* access to IO ports */ 245 if ((offset >= PCI_MAGIC_IO_RANGE) && 246 (offset < (PCI_MAGIC_IO_RANGE + 0x10000))) { 247 paddr_t pa; 248 249 pa = isa_io_physaddr + offset - PCI_MAGIC_IO_RANGE; 250 return arm_btop(pa); 251 } 252 #endif 253 /* 254 * we also need to allow mapping of the whole aperture, including MMIO 255 * registers on CyberPro at its physical address 256 */ 257 if ((offset >= igsfb_mem_paddr) && 258 (offset < (igsfb_mem_paddr + 0x01000000))) 259 return arm_btop(offset); 260 261 return -1; 262 } 263
Indexes created Wed Oct 01 13:09:50 GMT 2025