1 /*- 2 * (MPSAFE) 3 * 4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 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 as 12 * the first lines of this file unmodified. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: src/sys/isa/vga_isa.c,v 1.17 2000/01/29 15:08:56 peter Exp $ 29 */ 30 31 #include "opt_fb.h" 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/conf.h> 38 #include <sys/device.h> 39 #include <sys/bus.h> 40 #include <sys/fbio.h> 41 #include <sys/rman.h> 42 #include <sys/thread.h> 43 44 #include <vm/vm.h> 45 #include <vm/pmap.h> 46 47 #include <machine/md_var.h> 48 #include <machine/pc/bios.h> 49 50 #include <dev/video/fb/fbreg.h> 51 #include <dev/video/fb/vgareg.h> 52 53 #include "isareg.h" 54 #include "isavar.h" 55 56 #define VGA_SOFTC(unit) \ 57 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 58 59 static devclass_t isavga_devclass; 60 61 static int isavga_probe(device_t dev); 62 static int isavga_attach(device_t dev); 63 static int isavga_suspend(device_t dev); 64 static int isavga_resume(device_t dev); 65 66 static device_method_t isavga_methods[] = { 67 DEVMETHOD(device_probe, isavga_probe), 68 DEVMETHOD(device_attach, isavga_attach), 69 DEVMETHOD(device_suspend, isavga_suspend), 70 DEVMETHOD(device_resume, isavga_resume), 71 72 DEVMETHOD(bus_print_child, bus_generic_print_child), 73 DEVMETHOD_END 74 }; 75 76 static driver_t isavga_driver = { 77 VGA_DRIVER_NAME, 78 isavga_methods, 79 sizeof(vga_softc_t), 80 }; 81 82 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, NULL, NULL); 83 84 #ifdef FB_INSTALL_CDEV 85 86 static d_open_t isavga_open; 87 static d_close_t isavga_close; 88 static d_read_t isavga_read; 89 static d_write_t isavga_write; 90 static d_ioctl_t isavga_ioctl; 91 static d_mmap_t isavga_mmap; 92 93 static struct dev_ops isavga_ops = { 94 { VGA_DRIVER_NAME, -1, 0 }, 95 .d_open = isavga_open, 96 .d_close = isavga_close, 97 .d_read = isavga_read, 98 .d_write = isavga_write, 99 .d_ioctl = isavga_ioctl, 100 .d_mmap = isavga_mmap, 101 }; 102 103 #endif /* FB_INSTALL_CDEV */ 104 105 static int 106 isavga_probe(device_t dev) 107 { 108 video_adapter_t adp; 109 int error; 110 111 /* No pnp support */ 112 if (isa_get_vendorid(dev)) 113 return (ENXIO); 114 115 device_set_desc(dev, "Generic ISA VGA"); 116 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev)); 117 if (error == 0) { 118 bus_set_resource(dev, SYS_RES_IOPORT, 0, 119 adp.va_io_base, adp.va_io_size, -1); 120 bus_set_resource(dev, SYS_RES_MEMORY, 0, 121 adp.va_mem_base, adp.va_mem_size, -1); 122 #if 0 123 isa_set_port(dev, adp.va_io_base); 124 isa_set_portsize(dev, adp.va_io_size); 125 isa_set_maddr(dev, adp.va_mem_base); 126 isa_set_msize(dev, adp.va_mem_size); 127 #endif 128 } 129 return error; 130 } 131 132 static int 133 isavga_attach(device_t dev) 134 { 135 vga_softc_t *sc; 136 int unit; 137 int rid; 138 int error; 139 140 unit = device_get_unit(dev); 141 sc = device_get_softc(dev); 142 143 rid = 0; 144 bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 145 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 146 rid = 0; 147 bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 148 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 149 150 error = vga_attach_unit(unit, sc, device_get_flags(dev)); 151 if (error) 152 return error; 153 154 #ifdef FB_INSTALL_CDEV 155 /* attach a virtual frame buffer device */ 156 sc->devt = make_dev(&isavga_ops, VGA_MKMINOR(unit), 0, 0, 02660, "vga%x", VGA_MKMINOR(unit)); 157 reference_dev(sc->devt); 158 error = fb_attach(sc->devt, sc->adp); 159 if (error) 160 return error; 161 #endif /* FB_INSTALL_CDEV */ 162 163 if (bootverbose) 164 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 165 166 #if 0 /* experimental */ 167 device_add_child(dev, "fb", -1); 168 bus_generic_attach(dev); 169 #endif 170 171 return 0; 172 } 173 174 static int 175 isavga_suspend(device_t dev) 176 { 177 vga_softc_t *sc; 178 int err, nbytes; 179 180 sc = device_get_softc(dev); 181 err = bus_generic_suspend(dev); 182 if (err) 183 return (err); 184 185 /* Save the video state across the suspend. */ 186 if (sc->state_buf != NULL) { 187 kfree(sc->state_buf, M_TEMP); 188 sc->state_buf = NULL; 189 } 190 nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0); 191 if (nbytes <= 0) 192 return (0); 193 sc->state_buf = kmalloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO); 194 if (sc->state_buf == NULL) 195 return (0); 196 if (bootverbose) 197 device_printf(dev, "saving %d bytes of video state\n", nbytes); 198 lwkt_gettoken(&vga_token); 199 if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf, 200 nbytes) != 0) { 201 device_printf(dev, "failed to save state (nbytes=%d)\n", 202 nbytes); 203 kfree(sc->state_buf, M_TEMP); 204 sc->state_buf = NULL; 205 } 206 lwkt_reltoken(&vga_token); 207 return (0); 208 } 209 210 static int 211 isavga_resume(device_t dev) 212 { 213 vga_softc_t *sc; 214 215 sc = device_get_softc(dev); 216 if (sc->state_buf != NULL) { 217 if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp, 218 sc->state_buf) != 0) 219 device_printf(dev, "failed to reload state\n"); 220 kfree(sc->state_buf, M_TEMP); 221 sc->state_buf = NULL; 222 } 223 224 bus_generic_resume(dev); 225 return 0; 226 } 227 228 #ifdef FB_INSTALL_CDEV 229 230 static int 231 isavga_open(struct dev_open_args *ap) 232 { 233 cdev_t dev = ap->a_head.a_dev; 234 235 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags, 236 ap->a_devtype, ap->a_cred); 237 } 238 239 static int 240 isavga_close(struct dev_close_args *ap) 241 { 242 cdev_t dev = ap->a_head.a_dev; 243 244 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), 245 ap->a_fflag, ap->a_devtype); 246 } 247 248 static int 249 isavga_read(struct dev_read_args *ap) 250 { 251 cdev_t dev = ap->a_head.a_dev; 252 253 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag); 254 } 255 256 static int 257 isavga_write(struct dev_write_args *ap) 258 { 259 cdev_t dev = ap->a_head.a_dev; 260 261 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag); 262 } 263 264 static int 265 isavga_ioctl(struct dev_ioctl_args *ap) 266 { 267 cdev_t dev = ap->a_head.a_dev; 268 269 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred); 270 } 271 272 static int 273 isavga_mmap(struct dev_mmap_args *ap) 274 { 275 cdev_t dev = ap->a_head.a_dev; 276 277 ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), 278 ap->a_offset, ap->a_nprot); 279 return(0); 280 } 281 282 #endif /* FB_INSTALL_CDEV */ 283