sys/isa/vga_isa.c

   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
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  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/conf.h>
  38 #include <sys/bus.h>
  39 #include <sys/fbio.h>
  40
  41 #include <machine/bus.h>
  42 #include <machine/resource.h>
  43
  44 #include <sys/rman.h>
  45
  46 #include <vm/vm.h>
  47 #include <vm/pmap.h>
  48
  49 #include <machine/md_var.h>
  50 #ifdef __i386__
  51 #include <machine/pc/bios.h>
  52 #endif
  53
  54 #include <dev/fb/fbreg.h>
  55 #include <dev/fb/vgareg.h>
  56
  57 #include <isa/isareg.h>
  58 #include <isa/isavar.h>
  59
  60 #define VGA_SOFTC(unit)         \
  61         ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
  62
  63 static devclass_t       isavga_devclass;
  64
  65 #ifdef FB_INSTALL_CDEV
  66
  67 static d_open_t         isavga_open;
  68 static d_close_t        isavga_close;
  69 static d_read_t         isavga_read;
  70 static d_write_t        isavga_write;
  71 static d_ioctl_t        isavga_ioctl;
  72 static d_mmap_t         isavga_mmap;
  73
  74 static struct cdevsw isavga_cdevsw = {
  75         .d_version =    D_VERSION,
  76         .d_flags =      D_NEEDGIANT,
  77         .d_open =       isavga_open,
  78         .d_close =      isavga_close,
  79         .d_read =       isavga_read,
  80         .d_write =      isavga_write,
  81         .d_ioctl =      isavga_ioctl,
  82         .d_mmap =       isavga_mmap,
  83         .d_name =       VGA_DRIVER_NAME,
  84         .d_maj =        -1,
  85 };
  86
  87 #endif /* FB_INSTALL_CDEV */
  88
  89 static void
  90 isavga_identify(driver_t *driver, device_t parent)
  91 {
  92         BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
  93 }
  94
  95 static int
  96 isavga_probe(device_t dev)
  97 {
  98         video_adapter_t adp;
  99         int error;
 100
 101         /* No pnp support */
 102         if (isa_get_vendorid(dev))
 103                 return (ENXIO);
 104
 105         device_set_desc(dev, "Generic ISA VGA");
 106         error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
 107         if (error == 0) {
 108                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 109                                  adp.va_io_base, adp.va_io_size);
 110                 bus_set_resource(dev, SYS_RES_MEMORY, 0,
 111                                  adp.va_mem_base, adp.va_mem_size);
 112 #if 0
 113                 isa_set_port(dev, adp.va_io_base);
 114                 isa_set_portsize(dev, adp.va_io_size);
 115                 isa_set_maddr(dev, adp.va_mem_base);
 116                 isa_set_msize(dev, adp.va_mem_size);
 117 #endif
 118         }
 119         return error;
 120 }
 121
 122 static int
 123 isavga_attach(device_t dev)
 124 {
 125         vga_softc_t *sc;
 126         int unit;
 127         int rid;
 128         int error;
 129
 130         unit = device_get_unit(dev);
 131         sc = device_get_softc(dev);
 132
 133         rid = 0;
 134         bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
 135                                   0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 136         rid = 0;
 137         bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
 138                                  0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
 139
 140         error = vga_attach_unit(unit, sc, device_get_flags(dev));
 141         if (error)
 142                 return error;
 143
 144 #ifdef FB_INSTALL_CDEV
 145         /* attach a virtual frame buffer device */
 146         error = fb_attach(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw);
 147         if (error)
 148                 return error;
 149 #endif /* FB_INSTALL_CDEV */
 150
 151         if (bootverbose)
 152                 (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
 153
 154 #if experimental
 155         device_add_child(dev, "fb", -1);
 156         bus_generic_attach(dev);
 157 #endif
 158
 159         return 0;
 160 }
 161
 162 #ifdef FB_INSTALL_CDEV
 163
 164 static int
 165 isavga_open(dev_t dev, int flag, int mode, struct thread *td)
 166 {
 167         return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
 168 }
 169
 170 static int
 171 isavga_close(dev_t dev, int flag, int mode, struct thread *td)
 172 {
 173         return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
 174 }
 175
 176 static int
 177 isavga_read(dev_t dev, struct uio *uio, int flag)
 178 {
 179         return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
 180 }
 181
 182 static int
 183 isavga_write(dev_t dev, struct uio *uio, int flag)
 184 {
 185         return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
 186 }
 187
 188 static int
 189 isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
 190 {
 191         return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td);
 192 }
 193
 194 static int
 195 isavga_mmap(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int prot)
 196 {
 197         return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot);
 198 }
 199
 200 #endif /* FB_INSTALL_CDEV */
 201
 202 static device_method_t isavga_methods[] = {
 203         DEVMETHOD(device_identify,      isavga_identify),
 204         DEVMETHOD(device_probe,         isavga_probe),
 205         DEVMETHOD(device_attach,        isavga_attach),
 206
 207         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 208         { 0, 0 }
 209 };
 210
 211 static driver_t isavga_driver = {
 212         VGA_DRIVER_NAME,
 213         isavga_methods,
 214         sizeof(vga_softc_t),
 215 };
 216
 217 DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);