freebsd-dev/sys/isa/vga_isa.c
Julian Elischer b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00

222 lines
5.5 KiB
C

/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#include "opt_vga.h"
#include "opt_fb.h"
#include "opt_syscons.h" /* should be removed in the future, XXX */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/fbio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/vgareg.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
#define VGA_SOFTC(unit) \
((vga_softc_t *)devclass_get_softc(isavga_devclass, unit))
static devclass_t isavga_devclass;
#ifdef FB_INSTALL_CDEV
static d_open_t isavga_open;
static d_close_t isavga_close;
static d_read_t isavga_read;
static d_write_t isavga_write;
static d_ioctl_t isavga_ioctl;
static d_mmap_t isavga_mmap;
static struct cdevsw isavga_cdevsw = {
/* open */ isavga_open,
/* close */ isavga_close,
/* read */ isavga_read,
/* write */ isavga_write,
/* ioctl */ isavga_ioctl,
/* poll */ nopoll,
/* mmap */ isavga_mmap,
/* strategy */ nostrategy,
/* name */ VGA_DRIVER_NAME,
/* maj */ -1,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
};
#endif /* FB_INSTALL_CDEV */
static void
isavga_identify(driver_t *driver, device_t parent)
{
BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0);
}
static int
isavga_probe(device_t dev)
{
video_adapter_t adp;
device_t bus;
int error;
/* No pnp support */
if (isa_get_vendorid(dev))
return (ENXIO);
device_set_desc(dev, "Generic ISA VGA");
error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
if (error == 0) {
bus = device_get_parent(dev);
bus_set_resource(dev, SYS_RES_IOPORT, 0,
adp.va_io_base, adp.va_io_size);
bus_set_resource(dev, SYS_RES_MEMORY, 0,
adp.va_mem_base, adp.va_mem_size);
#if 0
isa_set_port(dev, adp.va_io_base);
isa_set_portsize(dev, adp.va_io_size);
isa_set_maddr(dev, adp.va_mem_base);
isa_set_msize(dev, adp.va_mem_size);
#endif
}
return error;
}
static int
isavga_attach(device_t dev)
{
vga_softc_t *sc;
struct resource *port;
struct resource *mem;
int unit;
int rid;
int error;
unit = device_get_unit(dev);
sc = device_get_softc(dev);
rid = 0;
port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
rid = 0;
mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
error = vga_attach_unit(unit, sc, device_get_flags(dev));
if (error)
return error;
#ifdef FB_INSTALL_CDEV
/* attach a virtual frame buffer device */
error = fb_attach(makedev(0, VGA_MKMINOR(unit)), sc->adp, &isavga_cdevsw);
if (error)
return error;
#endif /* FB_INSTALL_CDEV */
if (bootverbose)
(*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose);
#if experimental
device_add_child(dev, "fb", -1);
bus_generic_attach(dev);
#endif
return 0;
}
#ifdef FB_INSTALL_CDEV
static int
isavga_open(dev_t dev, int flag, int mode, struct thread *td)
{
return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
}
static int
isavga_close(dev_t dev, int flag, int mode, struct thread *td)
{
return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td);
}
static int
isavga_read(dev_t dev, struct uio *uio, int flag)
{
return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
}
static int
isavga_write(dev_t dev, struct uio *uio, int flag)
{
return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag);
}
static int
isavga_ioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
{
return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td);
}
static int
isavga_mmap(dev_t dev, vm_offset_t offset, int prot)
{
return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, prot);
}
#endif /* FB_INSTALL_CDEV */
static device_method_t isavga_methods[] = {
DEVMETHOD(device_identify, isavga_identify),
DEVMETHOD(device_probe, isavga_probe),
DEVMETHOD(device_attach, isavga_attach),
DEVMETHOD(bus_print_child, bus_generic_print_child),
{ 0, 0 }
};
static driver_t isavga_driver = {
VGA_DRIVER_NAME,
isavga_methods,
sizeof(vga_softc_t),
};
DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);