igsfb_ofbus.c revision 1.14
1 /* $NetBSD: igsfb_ofbus.c,v 1.14 2012/10/27 17:18:11 chs 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 1.14 2012/10/27 17:18:11 chs 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 #include <sys/bus.h> 43 #include <uvm/uvm.h> 44 45 #include <machine/intr.h> 46 #include <machine/ofw.h> 47 #include <machine/pmap.h> 48 49 #include <dev/isa/isavar.h> 50 51 #include <dev/wscons/wsdisplayvar.h> 52 #include <dev/wscons/wsconsio.h> 53 #include <dev/rasops/rasops.h> 54 #include <dev/wscons/wsdisplay_vconsvar.h> 55 #include <dev/ofw/openfirm.h> 56 57 #include <dev/ic/igsfbreg.h> 58 #include <dev/ic/igsfbvar.h> 59 #include <shark/ofw/igsfb_ofbusvar.h> 60 61 static int igsfb_ofbus_is_console(int); 62 63 static int igsfb_ofbus_console = 0; 64 static int igsfb_ofbus_phandle = 0; 65 66 67 68 static int igsfb_ofbus_match(device_t, cfdata_t, void *); 69 static void igsfb_ofbus_attach(device_t, device_t, void *); 70 static int igsfb_setup_dc(struct igsfb_devconfig *); 71 static paddr_t igsfb_ofbus_mmap(void *, void *, off_t, int); 72 73 CFATTACH_DECL_NEW(igsfb_ofbus, sizeof(struct igsfb_softc), 74 igsfb_ofbus_match, igsfb_ofbus_attach, NULL, NULL); 75 76 static const char const *compat_strings[] = { "igs,cyperpro2010", NULL }; 77 78 vaddr_t igsfb_mem_vaddr = 0, igsfb_mmio_vaddr = 0; 79 paddr_t igsfb_mem_paddr; 80 extern paddr_t isa_io_physaddr; 81 struct bus_space igsfb_memt, igsfb_iot; 82 83 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 84 extern int console_ihandle; 85 #endif 86 87 int 88 igsfb_ofbus_cnattach(bus_space_tag_t iot, bus_space_tag_t memt) 89 { 90 struct igsfb_devconfig *dc; 91 int ret; 92 int chosen_phandle, igs_node; 93 int stdout_ihandle, stdout_phandle; 94 uint32_t regs[16]; 95 char mode_buffer[64]; 96 97 stdout_phandle = 0; 98 99 /* first find out if there's a CyberPro at all in this machine */ 100 igs_node = OF_finddevice("/vlbus/display"); 101 if (igs_node == -1) 102 return ENXIO; 103 if (of_compatible(igs_node, compat_strings) < 0) 104 return ENXIO; 105 106 /* 107 * now we know there's a CyberPro in this machine so map it into 108 * kernel space, even if it's not the console 109 */ 110 if (OF_getprop(igs_node, "reg", regs, sizeof(regs)) <= 0) 111 return ENXIO; 112 113 igsfb_mem_paddr = be32toh(regs[13]); 114 /* 4MB VRAM aperture, bufferable and cacheable */ 115 igsfb_mem_vaddr = ofw_map(igsfb_mem_paddr, 0x00400000, L2_B | L2_C); 116 /* MMIO registers */ 117 igsfb_mmio_vaddr = ofw_map(igsfb_mem_paddr + IGS_MEM_MMIO_SELECT, 118 0x00100000, 0); 119 120 memcpy(&igsfb_memt, memt, sizeof(struct bus_space)); 121 igsfb_memt.bs_cookie = (void *)igsfb_mem_vaddr; 122 memcpy(&igsfb_iot, memt, sizeof(struct bus_space)); 123 igsfb_iot.bs_cookie = (void *)igsfb_mmio_vaddr; 124 125 /* 126 * check if the firmware output device is indeed the CyberPro 127 */ 128 if ((chosen_phandle = OF_finddevice("/chosen")) == -1 || 129 OF_getprop(chosen_phandle, "stdout", &stdout_ihandle, 130 sizeof(stdout_ihandle)) != sizeof(stdout_ihandle)) { 131 return ENXIO; 132 } 133 stdout_ihandle = of_decode_int((void *)&stdout_ihandle); 134 stdout_phandle = OF_instance_to_package(stdout_ihandle); 135 136 if (stdout_phandle != igs_node) 137 return ENXIO; 138 139 /* ok, now setup and attach the console */ 140 dc = &igsfb_console_dc; 141 ret = igsfb_setup_dc(dc); 142 if (ret) 143 return ret; 144 145 if (of_get_mode_string(mode_buffer, sizeof(mode_buffer))) { 146 strcpy(dc->dc_modestring, mode_buffer); 147 } 148 149 ret = igsfb_cnattach_subr(dc); 150 if (ret) 151 return ret; 152 153 igsfb_ofbus_console = 1; 154 igsfb_ofbus_phandle = stdout_phandle; 155 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 156 console_ihandle = stdout_ihandle; 157 #endif 158 return 0; 159 } 160 161 static int 162 igsfb_setup_dc(struct igsfb_devconfig *dc) 163 { 164 int ret; 165 166 dc->dc_id = 0x2010; 167 dc->dc_memt = &igsfb_memt; 168 dc->dc_memaddr = 0; 169 dc->dc_memsz= 0x00400000; 170 dc->dc_memflags = 0; 171 172 dc->dc_iot = &igsfb_iot; 173 dc->dc_iobase = 0; 174 dc->dc_ioflags = 0; 175 dc->dc_mmap = igsfb_ofbus_mmap; 176 if (bus_space_map(dc->dc_iot, 177 dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE, 178 dc->dc_ioflags, 179 &dc->dc_ioh) != 0) 180 { 181 printf("unable to map I/O registers\n"); 182 return 1; 183 } 184 ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags); 185 if (ret) 186 return ret; 187 return 0; 188 } 189 190 static int 191 igsfb_ofbus_is_console(int phandle) 192 { 193 194 return igsfb_ofbus_console && (phandle == igsfb_ofbus_phandle); 195 } 196 197 198 static int 199 igsfb_ofbus_match(device_t parent, cfdata_t match, void *aux) 200 { 201 struct ofbus_attach_args *oba = aux; 202 203 if (of_compatible(oba->oba_phandle, compat_strings) < 0) 204 return 0; 205 206 return 10; /* beat vga etc. */ 207 } 208 209 static void 210 igsfb_ofbus_attach(device_t parent, device_t self, void *aux) 211 { 212 struct igsfb_softc *sc = device_private(self); 213 struct ofbus_attach_args *oba = aux; 214 uint32_t regs[16]; 215 int isconsole, ret; 216 217 sc->sc_dev = self; 218 if (igsfb_ofbus_is_console(oba->oba_phandle)) { 219 isconsole = 1; 220 sc->sc_dc = &igsfb_console_dc; 221 } else { 222 isconsole = 0; 223 sc->sc_dc = malloc(sizeof(struct igsfb_devconfig), 224 M_DEVBUF, M_NOWAIT | M_ZERO); 225 if (sc->sc_dc == NULL) 226 panic("unable to allocate igsfb_devconfig"); 227 if (OF_getprop(oba->oba_phandle, "reg", 228 regs, sizeof(regs)) <= 0) 229 { 230 printf(": unable to read 'reg' property\n"); 231 return; 232 } 233 ret = igsfb_setup_dc(sc->sc_dc); 234 if (ret) 235 return; 236 } 237 printf(": IGS CyberPro 2010 at 0x%08x\n", (uint32_t)igsfb_mem_paddr); 238 239 igsfb_attach_subr(sc, isconsole); 240 } 241 242 static paddr_t 243 igsfb_ofbus_mmap(void *v, void *vs, off_t offset, int prot) 244 { 245 246 #ifdef PCI_MAGIC_IO_RANGE 247 /* access to IO ports */ 248 if ((offset >= PCI_MAGIC_IO_RANGE) && 249 (offset < (PCI_MAGIC_IO_RANGE + 0x10000))) { 250 paddr_t pa; 251 252 pa = isa_io_physaddr + offset - PCI_MAGIC_IO_RANGE; 253 return arm_btop(pa); 254 } 255 #endif 256 /* 257 * we also need to allow mapping of the whole aperture, including MMIO 258 * registers on CyberPro at its physical address 259 */ 260 if ((offset >= igsfb_mem_paddr) && 261 (offset < (igsfb_mem_paddr + 0x00800000))) { 262 return (arm_btop(offset) | ARM32_MMAP_WRITECOMBINE); 263 } 264 if ((offset >= (igsfb_mem_paddr + 0x00800000)) && 265 (offset < (igsfb_mem_paddr + 0x01000000))) 266 return arm_btop(offset); 267 268 return -1; 269 } 270
Indexes created Tue Sep 30 17:09:57 GMT 2025