freebsd-dev/sys/dev/sx/sx_pci.c
2004-05-30 20:08:47 +00:00

168 lines
4.0 KiB
C

/*
* Device driver for Specialix I/O8+ multiport serial card.
*
* Copyright 2003 Frank Mayhar <frank@exit.com>
*
* Derived from the "si" driver by Peter Wemm <peter@netplex.com.au>, using
* lots of information from the Linux "specialix" driver by Roger Wolff
* <R.E.Wolff@BitWizard.nl> and from the Intel CD1865 "Intelligent Eight-
* Channel Communications Controller" datasheet. Roger was also nice
* enough to answer numerous questions about stuff specific to the I/O8+
* not covered by the CD1865 datasheet.
*
* 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
* notices, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notices, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY ``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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/tty.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <machine/clock.h>
#include <sys/rman.h>
#include <dev/sx/cd1865.h>
#include <dev/sx/sxvar.h>
#include <dev/sx/sx.h>
#include <dev/sx/sx_util.h>
#include <dev/pci/pcivar.h>
static int
sx_pci_probe(
device_t dev)
{
const char *desc = NULL;
switch (pci_get_devid(dev)) {
case 0x200011cb:
if (pci_get_subdevice(dev) == (uint16_t)0xb008) {
desc = "Specialix I/O8+ Multiport Serial Card";
}
break;
}
if (desc) {
device_set_desc(dev, desc);
return 0;
}
return ENXIO;
}
static int
sx_pci_attach(device_t dev)
{
struct sx_softc *sc;
void *ih;
int error;
error = 0;
ih = NULL;
sc = device_get_softc(dev);
sc->sc_io_rid = 0x18;
sc->sc_io_res = bus_alloc_resource(dev,
SYS_RES_IOPORT,
&sc->sc_io_rid,
0, ~0, 1,
RF_ACTIVE);
if (!sc->sc_io_res) {
device_printf(dev, "can't map I/O\n");
goto fail;
}
sc->sc_st = rman_get_bustag(sc->sc_io_res);
sc->sc_sh = rman_get_bushandle(sc->sc_io_res);
/*
* Now that we have the bus handle, we can make certain that this
* is an I/O8+.
*/
if (sx_probe_io8(dev)) {
device_printf(dev, "Oops! Device is not an I/O8+ board!\n");
goto fail;
}
/*sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_io_res);*/
/*sc->sc_maddr = rman_get_virtual(sc->sc_io_res);*/
sc->sc_irq_rid = 0;
sc->sc_irq_res = bus_alloc_resource(dev,
SYS_RES_IRQ,
&sc->sc_irq_rid,
0, ~0, 1,
RF_ACTIVE | RF_SHAREABLE);
if (!sc->sc_irq_res) {
device_printf(dev, "Can't map interrupt\n");
goto fail;
}
sc->sc_irq = rman_get_start(sc->sc_irq_res);
error = bus_setup_intr(dev,
sc->sc_irq_res,
INTR_TYPE_TTY,
sx_intr,
sc, &ih);
if (error) {
device_printf(dev, "Can't activate interrupt\n");
goto fail;
}
error = sxattach(dev);
if (error)
goto fail;
return (0); /* success */
fail:
if (error == 0)
error = ENXIO;
if (sc->sc_irq_res) {
if (ih)
bus_teardown_intr(dev, sc->sc_irq_res, ih);
bus_release_resource(dev,
SYS_RES_IRQ,
sc->sc_irq_rid,
sc->sc_irq_res);
sc->sc_irq_res = 0;
}
if (sc->sc_io_res) {
bus_release_resource(dev,
SYS_RES_IOPORT,
sc->sc_io_rid,
sc->sc_io_res);
sc->sc_io_res = 0;
}
return(error);
}
static device_method_t sx_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sx_pci_probe),
DEVMETHOD(device_attach, sx_pci_attach),
/* DEVMETHOD(device_detach, sx_pci_detach),*/
{ 0, 0 }
};
static driver_t sx_pci_driver = {
"sx",
sx_pci_methods,
sizeof(struct sx_softc),
};
DRIVER_MODULE(sx, pci, sx_pci_driver, sx_devclass, 0, 0);