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freebsd/sys/isa/vga_isa.c
Marius Strobl 4b7ec27007 - There's no need to overwrite the default device method with the default
one. Interestingly, these are actually the default for quite some time
  (bus_generic_driver_added(9) since r52045 and bus_generic_print_child(9)
  since r52045) but even recently added device drivers do this unnecessarily.
  Discussed with: jhb, marcel
- While at it, use DEVMETHOD_END.
  Discussed with: jhb
- Also while at it, use __FBSDID.
2011-11-22 21:28:20 +00:00

383 lines
8.6 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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/malloc.h>
#include <sys/module.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>
#ifdef __i386__
#include <machine/pc/bios.h>
#endif
#include <dev/fb/fbreg.h>
#include <dev/fb/vgareg.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
static void
vga_suspend(device_t dev)
{
vga_softc_t *sc;
int nbytes;
sc = device_get_softc(dev);
/* Save the video state across the suspend. */
if (sc->state_buf != NULL)
goto save_palette;
nbytes = vidd_save_state(sc->adp, NULL, 0);
if (nbytes <= 0)
goto save_palette;
sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT);
if (sc->state_buf == NULL)
goto save_palette;
if (bootverbose)
device_printf(dev, "saving %d bytes of video state\n", nbytes);
if (vidd_save_state(sc->adp, sc->state_buf, nbytes) != 0) {
device_printf(dev, "failed to save state (nbytes=%d)\n",
nbytes);
free(sc->state_buf, M_TEMP);
sc->state_buf = NULL;
}
save_palette:
/* Save the color palette across the suspend. */
if (sc->pal_buf != NULL)
return;
sc->pal_buf = malloc(256 * 3, M_TEMP, M_NOWAIT);
if (sc->pal_buf == NULL)
return;
if (bootverbose)
device_printf(dev, "saving color palette\n");
if (vidd_save_palette(sc->adp, sc->pal_buf) != 0) {
device_printf(dev, "failed to save palette\n");
free(sc->pal_buf, M_TEMP);
sc->pal_buf = NULL;
}
}
static void
vga_resume(device_t dev)
{
vga_softc_t *sc;
sc = device_get_softc(dev);
if (sc->state_buf != NULL) {
if (vidd_load_state(sc->adp, sc->state_buf) != 0)
device_printf(dev, "failed to reload state\n");
free(sc->state_buf, M_TEMP);
sc->state_buf = NULL;
}
if (sc->pal_buf != NULL) {
if (vidd_load_palette(sc->adp, sc->pal_buf) != 0)
device_printf(dev, "failed to reload palette\n");
free(sc->pal_buf, M_TEMP);
sc->pal_buf = NULL;
}
}
#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 = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_open = isavga_open,
.d_close = isavga_close,
.d_read = isavga_read,
.d_write = isavga_write,
.d_ioctl = isavga_ioctl,
.d_mmap = isavga_mmap,
.d_name = VGA_DRIVER_NAME,
};
#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;
int error;
/* No pnp support */
if (isa_get_vendorid(dev))
return (ENXIO);
error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev));
if (error == 0) {
device_set_desc(dev, "Generic ISA VGA");
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;
int unit;
int rid;
int error;
unit = device_get_unit(dev);
sc = device_get_softc(dev);
rid = 0;
bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, 0, RF_ACTIVE | RF_SHAREABLE);
rid = 0;
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(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw);
if (error)
return (error);
#endif /* FB_INSTALL_CDEV */
if (0 && bootverbose)
vidd_diag(sc->adp, bootverbose);
#if 0 /* experimental */
device_add_child(dev, "fb", -1);
bus_generic_attach(dev);
#endif
return (0);
}
static int
isavga_suspend(device_t dev)
{
int error;
error = bus_generic_suspend(dev);
if (error != 0)
return (error);
vga_suspend(dev);
return (error);
}
static int
isavga_resume(device_t dev)
{
vga_resume(dev);
return (bus_generic_resume(dev));
}
#ifdef FB_INSTALL_CDEV
static int
isavga_open(struct cdev *dev, int flag, int mode, struct thread *td)
{
return (vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td));
}
static int
isavga_close(struct cdev *dev, int flag, int mode, struct thread *td)
{
return (vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td));
}
static int
isavga_read(struct cdev *dev, struct uio *uio, int flag)
{
return (vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag));
}
static int
isavga_write(struct cdev *dev, struct uio *uio, int flag)
{
return (vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag));
}
static int
isavga_ioctl(struct cdev *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(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
int prot, vm_memattr_t *memattr)
{
return (vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot,
memattr));
}
#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(device_suspend, isavga_suspend),
DEVMETHOD(device_resume, isavga_resume),
DEVMETHOD_END
};
static driver_t isavga_driver = {
VGA_DRIVER_NAME,
isavga_methods,
sizeof(vga_softc_t),
};
DRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0);
static devclass_t vgapm_devclass;
static void
vgapm_identify(driver_t *driver, device_t parent)
{
if (device_get_flags(parent) != 0)
device_add_child(parent, "vgapm", 0);
}
static int
vgapm_probe(device_t dev)
{
device_set_desc(dev, "VGA suspend/resume");
device_quiet(dev);
return (BUS_PROBE_DEFAULT);
}
static int
vgapm_attach(device_t dev)
{
bus_generic_probe(dev);
bus_generic_attach(dev);
return (0);
}
static int
vgapm_suspend(device_t dev)
{
device_t vga_dev;
int error;
error = bus_generic_suspend(dev);
if (error != 0)
return (error);
vga_dev = devclass_get_device(isavga_devclass, 0);
if (vga_dev == NULL)
return (0);
vga_suspend(vga_dev);
return (0);
}
static int
vgapm_resume(device_t dev)
{
device_t vga_dev;
vga_dev = devclass_get_device(isavga_devclass, 0);
if (vga_dev != NULL)
vga_resume(vga_dev);
return (bus_generic_resume(dev));
}
static device_method_t vgapm_methods[] = {
DEVMETHOD(device_identify, vgapm_identify),
DEVMETHOD(device_probe, vgapm_probe),
DEVMETHOD(device_attach, vgapm_attach),
DEVMETHOD(device_suspend, vgapm_suspend),
DEVMETHOD(device_resume, vgapm_resume),
{ 0, 0 }
};
static driver_t vgapm_driver = {
"vgapm",
vgapm_methods,
0
};
DRIVER_MODULE(vgapm, vgapci, vgapm_driver, vgapm_devclass, 0, 0);