vga_isa.c revision 74810
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: head/sys/isa/vga_isa.c 74810 2001-03-26 12:41:29Z phk $ 27 */ 28 29#include "opt_vga.h" 30#include "opt_fb.h" 31#include "opt_syscons.h" /* should be removed in the future, XXX */ 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/conf.h> 37#include <sys/bus.h> 38#include <sys/fbio.h> 39 40#include <machine/bus.h> 41#include <machine/resource.h> 42 43#include <sys/rman.h> 44 45#include <vm/vm.h> 46#include <vm/pmap.h> 47 48#include <machine/md_var.h> 49#include <machine/pc/bios.h> 50 51#include <dev/fb/fbreg.h> 52#include <dev/fb/vgareg.h> 53 54#include <isa/isareg.h> 55#include <isa/isavar.h> 56 57#define VGA_SOFTC(unit) \ 58 ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 59 60static devclass_t isavga_devclass; 61 62#ifdef FB_INSTALL_CDEV 63 64static d_open_t isavga_open; 65static d_close_t isavga_close; 66static d_read_t isavga_read; 67static d_write_t isavga_write; 68static d_ioctl_t isavga_ioctl; 69static d_mmap_t isavga_mmap; 70 71static struct cdevsw isavga_cdevsw = { 72 /* open */ isavga_open, 73 /* close */ isavga_close, 74 /* read */ isavga_read, 75 /* write */ isavga_write, 76 /* ioctl */ isavga_ioctl, 77 /* poll */ nopoll, 78 /* mmap */ isavga_mmap, 79 /* strategy */ nostrategy, 80 /* name */ VGA_DRIVER_NAME, 81 /* maj */ -1, 82 /* dump */ nodump, 83 /* psize */ nopsize, 84 /* flags */ 0, 85}; 86 87#endif /* FB_INSTALL_CDEV */ 88 89static void 90isavga_identify(driver_t *driver, device_t parent) 91{ 92 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0); 93} 94 95static int 96isavga_probe(device_t dev) 97{ 98 video_adapter_t adp; 99 device_t bus; 100 int error; 101 102 /* No pnp support */ 103 if (isa_get_vendorid(dev)) 104 return (ENXIO); 105 106 device_set_desc(dev, "Generic ISA VGA"); 107 error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev)); 108 if (error == 0) { 109 bus = device_get_parent(dev); 110 bus_set_resource(dev, SYS_RES_IOPORT, 0, 111 adp.va_io_base, adp.va_io_size); 112 bus_set_resource(dev, SYS_RES_MEMORY, 0, 113 adp.va_mem_base, adp.va_mem_size); 114#if 0 115 isa_set_port(dev, adp.va_io_base); 116 isa_set_portsize(dev, adp.va_io_size); 117 isa_set_maddr(dev, adp.va_mem_base); 118 isa_set_msize(dev, adp.va_mem_size); 119#endif 120 } 121 return error; 122} 123 124static int 125isavga_attach(device_t dev) 126{ 127 vga_softc_t *sc; 128 struct resource *port; 129 struct resource *mem; 130 int unit; 131 int rid; 132 int error; 133 134 unit = device_get_unit(dev); 135 sc = device_get_softc(dev); 136 137 rid = 0; 138 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 139 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 140 rid = 0; 141 mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 142 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 143 144 error = vga_attach_unit(unit, sc, device_get_flags(dev)); 145 if (error) 146 return error; 147 148#ifdef FB_INSTALL_CDEV 149 /* attach a virtual frame buffer device */ 150 error = fb_attach(makedev(0, VGA_MKMINOR(unit)), sc->adp, &isavga_cdevsw); 151 if (error) 152 return error; 153#endif /* FB_INSTALL_CDEV */ 154 155 if (bootverbose) 156 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 157 158#if experimental 159 device_add_child(dev, "fb", -1); 160 bus_generic_attach(dev); 161#endif 162 163 return 0; 164} 165 166#ifdef FB_INSTALL_CDEV 167 168static int 169isavga_open(dev_t dev, int flag, int mode, struct proc *p) 170{ 171 return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, p); 172} 173 174static int 175isavga_close(dev_t dev, int flag, int mode, struct proc *p) 176{ 177 return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, p); 178} 179 180static int 181isavga_read(dev_t dev, struct uio *uio, int flag) 182{ 183 return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag); 184} 185 186static int 187isavga_write(dev_t dev, struct uio *uio, int flag) 188{ 189 return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag); 190} 191 192static int 193isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 194{ 195 return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, p); 196} 197 198static int 199isavga_mmap(dev_t dev, vm_offset_t offset, int prot) 200{ 201 return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot); 202} 203 204#endif /* FB_INSTALL_CDEV */ 205 206static device_method_t isavga_methods[] = { 207 DEVMETHOD(device_identify, isavga_identify), 208 DEVMETHOD(device_probe, isavga_probe), 209 DEVMETHOD(device_attach, isavga_attach), 210 211 DEVMETHOD(bus_print_child, bus_generic_print_child), 212 { 0, 0 } 213}; 214 215static driver_t isavga_driver = { 216 VGA_DRIVER_NAME, 217 isavga_methods, 218 sizeof(vga_softc_t), 219}; 220 221DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 222