mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-26 11:47:31 +00:00
186f2b9e04
in <sys/kernel.h>
246 lines
5.8 KiB
C
246 lines
5.8 KiB
C
/*-
|
|
* PMC (Power Management Controller of NEC PC-98Note) Driver
|
|
*
|
|
* Copyright (c) 2001 Chiharu Shibata.
|
|
* 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.
|
|
* 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.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/eventhandler.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/types.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/reboot.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <isa/isavar.h>
|
|
|
|
struct pmc_isa_softc {
|
|
struct resource *port_res;
|
|
eventhandler_tag evt;
|
|
int flags;
|
|
};
|
|
|
|
static int pmc_isa_alloc_resources(device_t);
|
|
static void pmc_isa_release_resources(device_t);
|
|
static int pmc_isa_probe(device_t);
|
|
static int pmc_isa_attach(device_t);
|
|
static int pmc_isa_detach(device_t);
|
|
|
|
#define PMC_ISA_PORT 0x8f0
|
|
#define PMC_ISA_PORTSIZE 4
|
|
|
|
#define sc_inw(sc, port) \
|
|
bus_space_read_2(rman_get_bustag((sc)->port_res), \
|
|
rman_get_bushandle((sc)->port_res), (port))
|
|
|
|
#define sc_outw(sc, port, value) \
|
|
bus_space_write_2(rman_get_bustag((sc)->port_res), \
|
|
rman_get_bushandle((sc)->port_res), (port), (value))
|
|
|
|
static void
|
|
pmc_poweroff(void *arg, int howto)
|
|
{
|
|
struct pmc_isa_softc *sc = (struct pmc_isa_softc *)arg;
|
|
|
|
if (!sc->flags) {
|
|
outb(0x5e8e, inb(0x5e8e) & ~0x11); /* FDD LED off */
|
|
}
|
|
|
|
if (!(howto & RB_POWEROFF)) {
|
|
return;
|
|
}
|
|
|
|
sc_outw(sc, 0, 0x0044);
|
|
sc_outw(sc, 2, 1 << 10);
|
|
#if 1
|
|
/* for 9801NS/T */
|
|
sc_outw(sc, 0, 0xf00a);
|
|
sc_outw(sc, 2, 1 << 9);
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
pmc_isa_alloc_resources(device_t dev)
|
|
{
|
|
struct pmc_isa_softc *sc = device_get_softc(dev);
|
|
int rid;
|
|
|
|
bzero(sc, sizeof(*sc));
|
|
|
|
rid = 0;
|
|
sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
|
|
0ul, ~0ul, PMC_ISA_PORTSIZE,
|
|
RF_ACTIVE);
|
|
if (sc->port_res == NULL) {
|
|
return (ENOMEM);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
pmc_isa_release_resources(device_t dev)
|
|
{
|
|
struct pmc_isa_softc *sc = device_get_softc(dev);
|
|
|
|
if (sc->port_res != NULL) {
|
|
bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port_res);
|
|
}
|
|
sc->port_res = NULL;
|
|
}
|
|
|
|
static int
|
|
pmc_isa_probe(device_t dev)
|
|
{
|
|
struct pmc_isa_softc *sc = device_get_softc(dev);
|
|
u_int port;
|
|
u_int16_t save, tmp;
|
|
|
|
#if 0
|
|
if (isa_get_vendorid(dev)) {
|
|
return ENXIO;
|
|
}
|
|
if (device_get_unit(dev) > 0) {
|
|
printf("pmc: Only one PMC driver supported.\n");
|
|
return ENXIO;
|
|
}
|
|
#endif
|
|
port = isa_get_port(dev);
|
|
if (port == -1) {
|
|
port = PMC_ISA_PORT;
|
|
}
|
|
if (bootverbose) {
|
|
device_printf(dev, "port = 0x%x\n", port);
|
|
}
|
|
|
|
if (bus_set_resource(dev, SYS_RES_IOPORT, 0, port, PMC_ISA_PORTSIZE)) {
|
|
if (bootverbose) {
|
|
device_printf(dev, "bus_set_resource failed\n");
|
|
}
|
|
return ENXIO;
|
|
}
|
|
if (pmc_isa_alloc_resources(dev)) {
|
|
if (bootverbose) {
|
|
device_printf(dev, "pmc_isa_alloc_resources failed\n");
|
|
}
|
|
return ENXIO;
|
|
}
|
|
|
|
/* Check the existence of PMC */
|
|
sc_outw(sc, 0, 0x0052);
|
|
save = sc_inw(sc, 2);
|
|
tmp = save & ~0x3f;
|
|
sc_outw(sc, 2, tmp);
|
|
if (sc_inw(sc, 2) != tmp) {
|
|
if (bootverbose) {
|
|
device_printf(dev, "failed to clear index(0x0052)\n");
|
|
}
|
|
|
|
pmc_isa_release_resources(dev);
|
|
return ENXIO;
|
|
}
|
|
|
|
tmp |= 0x3e;
|
|
sc_outw(sc, 2, tmp);
|
|
if (sc_inw(sc, 2) != tmp) {
|
|
if (bootverbose) {
|
|
device_printf(dev, "failed to set index(0x0052)\n");
|
|
}
|
|
|
|
pmc_isa_release_resources(dev);
|
|
return ENXIO;
|
|
}
|
|
sc_outw(sc, 2, save);
|
|
|
|
pmc_isa_release_resources(dev);
|
|
|
|
device_set_desc(dev, "Power Management Controller");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pmc_isa_attach(device_t dev)
|
|
{
|
|
struct pmc_isa_softc *sc = device_get_softc(dev);
|
|
int error;
|
|
|
|
error = pmc_isa_alloc_resources(dev);
|
|
if (error) {
|
|
device_printf(dev, "resource allocation failed\n");
|
|
return error;
|
|
}
|
|
|
|
/* Power the system off using PMC */
|
|
sc->evt = EVENTHANDLER_REGISTER(shutdown_final, pmc_poweroff, sc,
|
|
SHUTDOWN_PRI_LAST);
|
|
sc->flags = device_get_flags(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
pmc_isa_detach(device_t dev)
|
|
{
|
|
struct pmc_isa_softc *sc = device_get_softc(dev);
|
|
|
|
if (bootverbose) {
|
|
device_printf(dev, "pmc_isa_detach called\n");
|
|
}
|
|
|
|
if (sc->evt != NULL) {
|
|
EVENTHANDLER_DEREGISTER(shutdown_final, sc->evt);
|
|
}
|
|
sc->evt = NULL;
|
|
|
|
pmc_isa_release_resources(dev);
|
|
return 0;
|
|
}
|
|
|
|
static device_method_t pmc_isa_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, pmc_isa_probe),
|
|
DEVMETHOD(device_attach, pmc_isa_attach),
|
|
DEVMETHOD(device_detach, pmc_isa_detach),
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t pmc_isa_driver = {
|
|
"pmc",
|
|
pmc_isa_methods, sizeof(struct pmc_isa_softc),
|
|
};
|
|
|
|
devclass_t pmc_devclass;
|
|
|
|
DRIVER_MODULE(pmc, isa, pmc_isa_driver, pmc_devclass, 0, 0);
|