1 /* $NetBSD: igsfb_ofbus.c,v 1.20 2021/01/27 03:10:21 thorpej 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 1.20 2021/01/27 03:10:21 thorpej 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/kmem.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 struct device_compatible_entry compat_data[] = { 77 { .compat = "igs,cyperpro2010" }, 78 DEVICE_COMPAT_EOL 79 }; 80 81 vaddr_t igsfb_mem_vaddr = 0, igsfb_mmio_vaddr = 0; 82 paddr_t igsfb_mem_paddr; 83 extern paddr_t isa_io_physaddr; 84 struct bus_space igsfb_memt, igsfb_iot; 85 86 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 87 extern int console_ihandle; 88 #endif 89 90 int 91 igsfb_ofbus_cnattach(bus_space_tag_t iot, bus_space_tag_t memt) 92 { 93 struct igsfb_devconfig *dc; 94 int ret; 95 int chosen_phandle, igs_node; 96 int stdout_ihandle, stdout_phandle; 97 uint32_t regs[16]; 98 char mode_buffer[64]; 99 100 stdout_phandle = 0; 101 102 /* first find out if there's a CyberPro at all in this machine */ 103 igs_node = OF_finddevice("/vlbus/display"); 104 if (igs_node == -1) 105 return ENXIO; 106 if (!of_compatible_match(igs_node, compat_data)) 107 return ENXIO; 108 109 /* 110 * now we know there's a CyberPro in this machine so map it into 111 * kernel space, even if it's not the console 112 */ 113 if (OF_getprop(igs_node, "reg", regs, sizeof(regs)) <= 0) 114 return ENXIO; 115 116 igsfb_mem_paddr = be32toh(regs[13]); 117 /* 4MB VRAM aperture, bufferable and cacheable */ 118 igsfb_mem_vaddr = ofw_map(igsfb_mem_paddr, 0x00400000, L2_B); 119 /* MMIO registers */ 120 igsfb_mmio_vaddr = ofw_map(igsfb_mem_paddr + IGS_MEM_MMIO_SELECT, 121 0x00100000, 0); 122 123 memcpy(&igsfb_memt, memt, sizeof(struct bus_space)); 124 igsfb_memt.bs_cookie = (void *)igsfb_mem_vaddr; 125 memcpy(&igsfb_iot, memt, sizeof(struct bus_space)); 126 igsfb_iot.bs_cookie = (void *)igsfb_mmio_vaddr; 127 128 /* 129 * check if the firmware output device is indeed the CyberPro 130 */ 131 if ((chosen_phandle = OF_finddevice("/chosen")) == -1 || 132 OF_getprop(chosen_phandle, "stdout", &stdout_ihandle, 133 sizeof(stdout_ihandle)) != sizeof(stdout_ihandle)) { 134 return ENXIO; 135 } 136 stdout_ihandle = of_decode_int((void *)&stdout_ihandle); 137 stdout_phandle = OF_instance_to_package(stdout_ihandle); 138 139 if (stdout_phandle != igs_node) { 140 /* 141 * If we aren't the boot console, the CyberPro probably 142 * hasn't been brought up yet. Bring it up now, it's 143 * still early enough to do so. 144 */ 145 const int handle = OF_open("/vlbus/display"); 146 if (handle != -1) 147 OF_close(handle); 148 return ENXIO; 149 } 150 151 /* ok, now setup and attach the console */ 152 dc = &igsfb_console_dc; 153 ret = igsfb_setup_dc(dc); 154 if (ret) 155 return ret; 156 157 if (of_get_mode_string(mode_buffer, sizeof(mode_buffer))) { 158 strcpy(dc->dc_modestring, mode_buffer); 159 } 160 161 ret = igsfb_cnattach_subr(dc); 162 if (ret) 163 return ret; 164 165 igsfb_ofbus_console = 1; 166 igsfb_ofbus_phandle = stdout_phandle; 167 #if (NIGSFB_OFBUS > 0) || (NVGA_OFBUS > 0) 168 console_ihandle = stdout_ihandle; 169 #endif 170 return 0; 171 } 172 173 static int 174 igsfb_setup_dc(struct igsfb_devconfig *dc) 175 { 176 int ret; 177 178 dc->dc_id = 0x2010; 179 dc->dc_memt = &igsfb_memt; 180 dc->dc_memaddr = 0; 181 dc->dc_memsz= 0x00400000; 182 dc->dc_memflags = 0; 183 184 dc->dc_iot = &igsfb_iot; 185 dc->dc_iobase = 0; 186 dc->dc_ioflags = 0; 187 dc->dc_mmap = igsfb_ofbus_mmap; 188 if (bus_space_map(dc->dc_iot, 189 dc->dc_iobase + IGS_REG_BASE, IGS_REG_SIZE, 190 dc->dc_ioflags, 191 &dc->dc_ioh) != 0) 192 { 193 printf("unable to map I/O registers\n"); 194 return 1; 195 } 196 ret = igsfb_enable(dc->dc_iot, dc->dc_iobase, dc->dc_ioflags); 197 if (ret) 198 return ret; 199 return 0; 200 } 201 202 static int 203 igsfb_ofbus_is_console(int phandle) 204 { 205 206 return igsfb_ofbus_console && (phandle == igsfb_ofbus_phandle); 207 } 208 209 210 static int 211 igsfb_ofbus_match(device_t parent, cfdata_t match, void *aux) 212 { 213 struct ofbus_attach_args *oba = aux; 214 215 /* beat vga etc. */ 216 return of_compatible_match(oba->oba_phandle, compat_data) * 10; 217 } 218 219 static void 220 igsfb_ofbus_attach(device_t parent, device_t self, void *aux) 221 { 222 struct igsfb_softc *sc = device_private(self); 223 struct ofbus_attach_args *oba = aux; 224 uint32_t regs[16]; 225 int isconsole, ret; 226 227 sc->sc_dev = self; 228 if (igsfb_ofbus_is_console(oba->oba_phandle)) { 229 isconsole = 1; 230 sc->sc_dc = &igsfb_console_dc; 231 } else { 232 isconsole = 0; 233 sc->sc_dc = kmem_zalloc(sizeof(struct igsfb_devconfig), 234 KM_SLEEP); 235 if (OF_getprop(oba->oba_phandle, "reg", 236 regs, sizeof(regs)) <= 0) 237 { 238 printf(": unable to read 'reg' property\n"); 239 return; 240 } 241 ret = igsfb_setup_dc(sc->sc_dc); 242 if (ret) 243 return; 244 } 245 printf(": IGS CyberPro 2010 at 0x%08x\n", (uint32_t)igsfb_mem_paddr); 246 247 igsfb_attach_subr(sc, isconsole); 248 } 249 250 static paddr_t 251 igsfb_ofbus_mmap(void *v, void *vs, off_t offset, int prot) 252 { 253 254 #ifdef PCI_MAGIC_IO_RANGE 255 /* access to IO ports */ 256 if ((offset >= PCI_MAGIC_IO_RANGE) && 257 (offset < (PCI_MAGIC_IO_RANGE + 0x10000))) { 258 paddr_t pa; 259 260 pa = isa_io_physaddr + offset - PCI_MAGIC_IO_RANGE; 261 return arm_btop(pa); 262 } 263 #endif 264 /* 265 * we also need to allow mapping of the whole aperture, including MMIO 266 * registers on CyberPro at its physical address 267 */ 268 if ((offset >= igsfb_mem_paddr) && 269 (offset < (igsfb_mem_paddr + 0x00800000))) { 270 return (arm_btop(offset) | ARM32_MMAP_WRITECOMBINE); 271 } 272 if ((offset >= (igsfb_mem_paddr + 0x00800000)) && 273 (offset < (igsfb_mem_paddr + 0x01000000))) 274 return arm_btop(offset); 275 276 return -1; 277 } 278
Indexes created Wed Sep 24 05:09:52 GMT 2025