1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/isa/vga_isa.c,v 1.17 2000/01/29 15:08:56 peter Exp $ 27 * $DragonFly: src/sys/bus/isa/vga_isa.c,v 1.9 2005/07/10 13:06:18 swildner Exp $ 28 */ 29 30 #include "opt_vga.h" 31 #include "opt_fb.h" 32 #include "opt_syscons.h" /* should be removed in the future, XXX */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/malloc.h> 38 #include <sys/conf.h> 39 #include <sys/bus.h> 40 #include <sys/fbio.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 45 #include <sys/rman.h> 46 47 #include <vm/vm.h> 48 #include <vm/pmap.h> 49 50 #include <machine/md_var.h> 51 #include <machine/pc/bios.h> 52 53 #include <dev/video/fb/fbreg.h> 54 #include <dev/video/fb/vgareg.h> 55 56 #include "isareg.h" 57 #include "isavar.h" 58 59 #define VGA_SOFTC(unit) \ 60 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 61 62 static devclass_t isavga_devclass; 63 64 static int isavga_probe(device_t dev); 65 static int isavga_attach(device_t dev); 66 static int isavga_suspend(device_t dev); 67 static int isavga_resume(device_t dev); 68 69 static device_method_t isavga_methods[] = { 70 DEVMETHOD(device_probe, isavga_probe), 71 DEVMETHOD(device_attach, isavga_attach), 72 DEVMETHOD(device_suspend, isavga_suspend), 73 DEVMETHOD(device_resume, isavga_resume), 74 75 DEVMETHOD(bus_print_child, bus_generic_print_child), 76 { 0, 0 } 77 }; 78 79 static driver_t isavga_driver = { 80 VGA_DRIVER_NAME, 81 isavga_methods, 82 sizeof(vga_softc_t), 83 }; 84 85 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 86 87 #ifdef FB_INSTALL_CDEV 88 89 static d_open_t isavga_open; 90 static d_close_t isavga_close; 91 static d_read_t isavga_read; 92 static d_write_t isavga_write; 93 static d_ioctl_t isavga_ioctl; 94 static d_mmap_t isavga_mmap; 95 96 static struct cdevsw isavga_cdevsw = { 97 /* name */ VGA_DRIVER_NAME, 98 /* maj */ -1, 99 /* flags */ 0, 100 /* port */ NULL, 101 /* clone */ NULL, 102 103 /* open */ isavga_open, 104 /* close */ isavga_close, 105 /* read */ isavga_read, 106 /* write */ isavga_write, 107 /* ioctl */ isavga_ioctl, 108 /* poll */ nopoll, 109 /* mmap */ isavga_mmap, 110 /* strategy */ nostrategy, 111 /* dump */ nodump, 112 /* psize */ nopsize 113 }; 114 115 #endif /* FB_INSTALL_CDEV */ 116 117 static int 118 isavga_probe(device_t dev) 119 { 120 video_adapter_t adp; 121 device_t bus; 122 int error; 123 124 /* No pnp support */ 125 if (isa_get_vendorid(dev)) 126 return (ENXIO); 127 128 device_set_desc(dev, "Generic ISA VGA"); 129 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev)); 130 if (error == 0) { 131 bus = device_get_parent(dev); 132 bus_set_resource(dev, SYS_RES_IOPORT, 0, 133 adp.va_io_base, adp.va_io_size); 134 bus_set_resource(dev, SYS_RES_MEMORY, 0, 135 adp.va_mem_base, adp.va_mem_size); 136 #if 0 137 isa_set_port(dev, adp.va_io_base); 138 isa_set_portsize(dev, adp.va_io_size); 139 isa_set_maddr(dev, adp.va_mem_base); 140 isa_set_msize(dev, adp.va_mem_size); 141 #endif 142 } 143 return error; 144 } 145 146 static int 147 isavga_attach(device_t dev) 148 { 149 vga_softc_t *sc; 150 struct resource *port; 151 struct resource *mem; 152 int unit; 153 int rid; 154 int error; 155 156 unit = device_get_unit(dev); 157 sc = device_get_softc(dev); 158 159 rid = 0; 160 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 161 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 162 rid = 0; 163 mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 164 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 165 166 error = vga_attach_unit(unit, sc, device_get_flags(dev)); 167 if (error) 168 return error; 169 170 #ifdef FB_INSTALL_CDEV 171 /* attach a virtual frame buffer device */ 172 cdevsw_add(&isavga_cdevsw, VGA_MKMINOR(-1), VGA_MKMINOR(unit)); 173 sc->devt = make_dev(&isavga_cdevsw, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit)); 174 reference_dev(sc->devt); 175 error = fb_attach(sc->devt, sc->adp); 176 if (error) 177 return error; 178 #endif /* FB_INSTALL_CDEV */ 179 180 if (bootverbose) 181 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 182 183 #if experimental 184 device_add_child(dev, "fb", -1); 185 bus_generic_attach(dev); 186 #endif 187 188 return 0; 189 } 190 191 static int 192 isavga_suspend(device_t dev) 193 { 194 vga_softc_t *sc; 195 int err, nbytes; 196 197 sc = device_get_softc(dev); 198 err = bus_generic_suspend(dev); 199 if (err) 200 return (err); 201 202 /* Save the video state across the suspend. */ 203 if (sc->state_buf != NULL) { 204 free(sc->state_buf, M_TEMP); 205 sc->state_buf = NULL; 206 } 207 nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0); 208 if (nbytes <= 0) 209 return (0); 210 sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO); 211 if (sc->state_buf == NULL) 212 return (0); 213 if (bootverbose) 214 device_printf(dev, "saving %d bytes of video state\n", nbytes); 215 if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf, 216 nbytes) != 0) { 217 device_printf(dev, "failed to save state (nbytes=%d)\n", 218 nbytes); 219 free(sc->state_buf, M_TEMP); 220 sc->state_buf = NULL; 221 } 222 return (0); 223 } 224 225 static int 226 isavga_resume(device_t dev) 227 { 228 vga_softc_t *sc; 229 230 sc = device_get_softc(dev); 231 if (sc->state_buf != NULL) { 232 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp, 233 sc->state_buf) != 0) 234 device_printf(dev, "failed to reload state\n"); 235 free(sc->state_buf, M_TEMP); 236 sc->state_buf = NULL; 237 } 238 239 bus_generic_resume(dev); 240 return 0; 241 } 242 243 #ifdef FB_INSTALL_CDEV 244 245 static int 246 isavga_open(dev_t dev, int flag, int mode, struct thread *td) 247 { 248 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td); 249 } 250 251 static int 252 isavga_close(dev_t dev, int flag, int mode, struct thread *td) 253 { 254 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td); 255 } 256 257 static int 258 isavga_read(dev_t dev, struct uio *uio, int flag) 259 { 260 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag); 261 } 262 263 static int 264 isavga_write(dev_t dev, struct uio *uio, int flag) 265 { 266 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag); 267 } 268 269 static int 270 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 271 { 272 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td); 273 } 274 275 static int 276 isavga_mmap(dev_t dev, vm_offset_t offset, int prot) 277 { 278 return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot); 279 } 280 281 #endif /* FB_INSTALL_CDEV */ 282