144 lines
4.0 KiB
C
144 lines
4.0 KiB
C
/*
|
|
* Copyright (c) 2004 M. Warner Losh.
|
|
* 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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 <sys/param.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/fdc/fdcvar.h>
|
|
#include <dev/fdc/fdcreg.h>
|
|
|
|
#include <isa/isavar.h>
|
|
#include <isa/isareg.h>
|
|
|
|
static int fdc_isa_probe(device_t);
|
|
static void fdctl_wr_isa(fdc_p, u_int8_t);
|
|
|
|
static struct isa_pnp_id fdc_ids[] = {
|
|
{0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */
|
|
{0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */
|
|
{0}
|
|
};
|
|
|
|
static void
|
|
fdctl_wr_isa(fdc_p fdc, u_int8_t v)
|
|
{
|
|
bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v);
|
|
}
|
|
|
|
static int
|
|
fdc_isa_probe(device_t dev)
|
|
{
|
|
int error, ic_type;
|
|
struct fdc_data *fdc;
|
|
|
|
fdc = device_get_softc(dev);
|
|
fdc->fdc_dev = dev;
|
|
fdc->fdctl_wr = fdctl_wr_isa;
|
|
|
|
/* Check pnp ids */
|
|
error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids);
|
|
if (error == ENXIO)
|
|
return ENXIO;
|
|
if (error == 0)
|
|
fdc->flags = FDC_ISPNP;
|
|
|
|
/* Attempt to allocate our resources for the duration of the probe */
|
|
error = fdc_alloc_resources(fdc);
|
|
if (error)
|
|
goto out;
|
|
|
|
/* Check that the controller is working. */
|
|
if ((fdc->flags & FDC_ISPNP) == 0) {
|
|
error = fdc_initial_reset(fdc);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
|
|
/* Try to determine a more specific device type. */
|
|
if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) {
|
|
ic_type = (u_char)ic_type;
|
|
switch (ic_type) {
|
|
case 0x80:
|
|
device_set_desc(dev, "NEC 765 or clone");
|
|
fdc->fdct = FDC_NE765;
|
|
break;
|
|
case 0x81: /* not mentioned in any hardware doc */
|
|
case 0x90:
|
|
device_set_desc(dev,
|
|
"Enhanced floppy controller (i82077, NE72065 or clone)");
|
|
fdc->fdct = FDC_ENHANCED;
|
|
break;
|
|
default:
|
|
device_set_desc(dev, "Generic floppy controller");
|
|
fdc->fdct = FDC_UNKNOWN;
|
|
break;
|
|
}
|
|
}
|
|
|
|
out:
|
|
fdc_release_resources(fdc);
|
|
return (error);
|
|
}
|
|
|
|
static device_method_t fdc_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, fdc_isa_probe),
|
|
DEVMETHOD(device_attach, fdc_attach),
|
|
DEVMETHOD(device_detach, fdc_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, fdc_print_child),
|
|
DEVMETHOD(bus_read_ivar, fdc_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, fdc_write_ivar),
|
|
/* Our children never use any other bus interface methods. */
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t fdc_driver = {
|
|
"fdc",
|
|
fdc_methods,
|
|
sizeof(struct fdc_data)
|
|
};
|
|
|
|
DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0);
|
|
DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0);
|