1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_vga.h" 33 #include "opt_fb.h" 34 #include "opt_syscons.h" /* should be removed in the future, XXX */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/malloc.h> 40 #include <sys/module.h> 41 #include <sys/conf.h> 42 #include <sys/bus.h> 43 #include <sys/fbio.h> 44 45 #include <machine/bus.h> 46 #include <machine/resource.h> 47 48 #include <sys/rman.h> 49 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 53 #include <machine/md_var.h> 54 #ifdef __i386__ 55 #include <machine/pc/bios.h> 56 #endif 57 58 #include <dev/fb/fbreg.h> 59 #include <dev/fb/vgareg.h> 60 61 #include <isa/isareg.h> 62 #include <isa/isavar.h> 63 64 #define VGA_ID 0x0009d041 /* PNP0900 */ 65 66 static struct isa_pnp_id vga_ids[] = { 67 { VGA_ID, NULL }, /* PNP0900 */ 68 { 0, NULL }, 69 }; 70 71 static void 72 vga_suspend(device_t dev) 73 { 74 vga_softc_t *sc; 75 int nbytes; 76 77 sc = device_get_softc(dev); 78 79 /* Save the video state across the suspend. */ 80 if (sc->state_buf != NULL) 81 goto save_palette; 82 nbytes = vidd_save_state(sc->adp, NULL, 0); 83 if (nbytes <= 0) 84 goto save_palette; 85 sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT); 86 if (sc->state_buf == NULL) 87 goto save_palette; 88 if (bootverbose) 89 device_printf(dev, "saving %d bytes of video state\n", nbytes); 90 if (vidd_save_state(sc->adp, sc->state_buf, nbytes) != 0) { 91 device_printf(dev, "failed to save state (nbytes=%d)\n", 92 nbytes); 93 free(sc->state_buf, M_TEMP); 94 sc->state_buf = NULL; 95 } 96 97 save_palette: 98 /* Save the color palette across the suspend. */ 99 if (sc->pal_buf != NULL) 100 return; 101 sc->pal_buf = malloc(256 * 3, M_TEMP, M_NOWAIT); 102 if (sc->pal_buf == NULL) 103 return; 104 if (bootverbose) 105 device_printf(dev, "saving color palette\n"); 106 if (vidd_save_palette(sc->adp, sc->pal_buf) != 0) { 107 device_printf(dev, "failed to save palette\n"); 108 free(sc->pal_buf, M_TEMP); 109 sc->pal_buf = NULL; 110 } 111 } 112 113 static void 114 vga_resume(device_t dev) 115 { 116 vga_softc_t *sc; 117 118 sc = device_get_softc(dev); 119 120 if (sc->state_buf != NULL) { 121 if (vidd_load_state(sc->adp, sc->state_buf) != 0) 122 device_printf(dev, "failed to reload state\n"); 123 free(sc->state_buf, M_TEMP); 124 sc->state_buf = NULL; 125 } 126 if (sc->pal_buf != NULL) { 127 if (vidd_load_palette(sc->adp, sc->pal_buf) != 0) 128 device_printf(dev, "failed to reload palette\n"); 129 free(sc->pal_buf, M_TEMP); 130 sc->pal_buf = NULL; 131 } 132 } 133 134 #define VGA_SOFTC(unit) \ 135 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 136 137 static devclass_t isavga_devclass; 138 139 #ifdef FB_INSTALL_CDEV 140 141 static d_open_t isavga_open; 142 static d_close_t isavga_close; 143 static d_read_t isavga_read; 144 static d_write_t isavga_write; 145 static d_ioctl_t isavga_ioctl; 146 static d_mmap_t isavga_mmap; 147 148 static struct cdevsw isavga_cdevsw = { 149 .d_version = D_VERSION, 150 .d_flags = D_NEEDGIANT, 151 .d_open = isavga_open, 152 .d_close = isavga_close, 153 .d_read = isavga_read, 154 .d_write = isavga_write, 155 .d_ioctl = isavga_ioctl, 156 .d_mmap = isavga_mmap, 157 .d_name = VGA_DRIVER_NAME, 158 }; 159 160 #endif /* FB_INSTALL_CDEV */ 161 162 static void 163 isavga_identify(driver_t *driver, device_t parent) 164 { 165 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0); 166 } 167 168 static int 169 isavga_probe(device_t dev) 170 { 171 video_adapter_t adp; 172 int error; 173 174 /* No pnp support */ 175 if (isa_get_vendorid(dev)) 176 return (ENXIO); 177 178 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev)); 179 if (error == 0) { 180 device_set_desc(dev, "Generic ISA VGA"); 181 bus_set_resource(dev, SYS_RES_IOPORT, 0, 182 adp.va_io_base, adp.va_io_size); 183 bus_set_resource(dev, SYS_RES_MEMORY, 0, 184 adp.va_mem_base, adp.va_mem_size); 185 isa_set_vendorid(dev, VGA_ID); 186 isa_set_logicalid(dev, VGA_ID); 187 #if 0 188 isa_set_port(dev, adp.va_io_base); 189 isa_set_portsize(dev, adp.va_io_size); 190 isa_set_maddr(dev, adp.va_mem_base); 191 isa_set_msize(dev, adp.va_mem_size); 192 #endif 193 } 194 return (error); 195 } 196 197 static int 198 isavga_attach(device_t dev) 199 { 200 vga_softc_t *sc; 201 int unit; 202 int rid; 203 int error; 204 205 unit = device_get_unit(dev); 206 sc = device_get_softc(dev); 207 208 rid = 0; 209 bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 210 RF_ACTIVE | RF_SHAREABLE); 211 rid = 0; 212 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 213 RF_ACTIVE | RF_SHAREABLE); 214 215 error = vga_attach_unit(unit, sc, device_get_flags(dev)); 216 if (error) 217 return (error); 218 219 #ifdef FB_INSTALL_CDEV 220 /* attach a virtual frame buffer device */ 221 error = fb_attach(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw); 222 if (error) 223 return (error); 224 #endif /* FB_INSTALL_CDEV */ 225 226 if (0 && bootverbose) 227 vidd_diag(sc->adp, bootverbose); 228 229 #if 0 /* experimental */ 230 device_add_child(dev, "fb", -1); 231 bus_generic_attach(dev); 232 #endif 233 234 return (0); 235 } 236 237 static int 238 isavga_suspend(device_t dev) 239 { 240 int error; 241 242 error = bus_generic_suspend(dev); 243 if (error != 0) 244 return (error); 245 vga_suspend(dev); 246 247 return (error); 248 } 249 250 static int 251 isavga_resume(device_t dev) 252 { 253 254 vga_resume(dev); 255 256 return (bus_generic_resume(dev)); 257 } 258 259 #ifdef FB_INSTALL_CDEV 260 261 static int 262 isavga_open(struct cdev *dev, int flag, int mode, struct thread *td) 263 { 264 return (vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td)); 265 } 266 267 static int 268 isavga_close(struct cdev *dev, int flag, int mode, struct thread *td) 269 { 270 return (vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td)); 271 } 272 273 static int 274 isavga_read(struct cdev *dev, struct uio *uio, int flag) 275 { 276 return (vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag)); 277 } 278 279 static int 280 isavga_write(struct cdev *dev, struct uio *uio, int flag) 281 { 282 return (vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag)); 283 } 284 285 static int 286 isavga_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 287 { 288 return (vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td)); 289 } 290 291 static int 292 isavga_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, 293 int prot, vm_memattr_t *memattr) 294 { 295 return (vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot, 296 memattr)); 297 } 298 299 #endif /* FB_INSTALL_CDEV */ 300 301 static device_method_t isavga_methods[] = { 302 DEVMETHOD(device_identify, isavga_identify), 303 DEVMETHOD(device_probe, isavga_probe), 304 DEVMETHOD(device_attach, isavga_attach), 305 DEVMETHOD(device_suspend, isavga_suspend), 306 DEVMETHOD(device_resume, isavga_resume), 307 308 DEVMETHOD_END 309 }; 310 311 static driver_t isavga_driver = { 312 VGA_DRIVER_NAME, 313 isavga_methods, 314 sizeof(vga_softc_t), 315 }; 316 317 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 318 319 static devclass_t vgapm_devclass; 320 321 static void 322 vgapm_identify(driver_t *driver, device_t parent) 323 { 324 325 if (device_get_flags(parent) != 0) 326 device_add_child(parent, "vgapm", 0); 327 } 328 329 static int 330 vgapm_probe(device_t dev) 331 { 332 333 device_set_desc(dev, "VGA suspend/resume"); 334 device_quiet(dev); 335 336 return (BUS_PROBE_DEFAULT); 337 } 338 339 static int 340 vgapm_attach(device_t dev) 341 { 342 343 bus_generic_probe(dev); 344 bus_generic_attach(dev); 345 346 return (0); 347 } 348 349 static int 350 vgapm_suspend(device_t dev) 351 { 352 device_t vga_dev; 353 int error; 354 355 error = bus_generic_suspend(dev); 356 if (error != 0) 357 return (error); 358 vga_dev = devclass_get_device(isavga_devclass, 0); 359 if (vga_dev == NULL) 360 return (0); 361 vga_suspend(vga_dev); 362 363 return (0); 364 } 365 366 static int 367 vgapm_resume(device_t dev) 368 { 369 device_t vga_dev; 370 371 vga_dev = devclass_get_device(isavga_devclass, 0); 372 if (vga_dev != NULL) 373 vga_resume(vga_dev); 374 375 return (bus_generic_resume(dev)); 376 } 377 378 static device_method_t vgapm_methods[] = { 379 DEVMETHOD(device_identify, vgapm_identify), 380 DEVMETHOD(device_probe, vgapm_probe), 381 DEVMETHOD(device_attach, vgapm_attach), 382 DEVMETHOD(device_suspend, vgapm_suspend), 383 DEVMETHOD(device_resume, vgapm_resume), 384 { 0, 0 } 385 }; 386 387 static driver_t vgapm_driver = { 388 "vgapm", 389 vgapm_methods, 390 0 391 }; 392 393 DRIVER_MODULE(vgapm, vgapci, vgapm_driver, vgapm_devclass, 0, 0); 394 ISA_PNP_INFO(vga_ids); 395