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freebsd-skq/sys/dev/ichsmb/ichsmb_pci.c
remko 57ca86731e Add the Intel 82801FB (ICH6) SMBus controller and the 
Intel 82801GB (ICH7) SMBus controller.

PR:		85106 [1]
PR:		99663 [2]
Approved by:	imp (mentor), jhb
Submitted by:	Oliver Fromme <olli at lurza.secnetix dot de>, [1]
		Arthur Hartwig <arthur dot hartwig at nokia dot com>, [1]
		Lowell Gilbert <lgfbsd at be-well dot ilk dot org> [2]@
MFC After:	3 days
2007-11-26 19:54:54 +00:00

230 lines
6.9 KiB
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/*-
* ichsmb_pci.c
*
* Author: Archie Cobbs <archie@freebsd.org>
* Copyright (c) 2000 Whistle Communications, Inc.
* All rights reserved.
* Author: Archie Cobbs <archie@freebsd.org>
*
* Subject to the following obligations and disclaimer of warranty, use and
* redistribution of this software, in source or object code forms, with or
* without modifications are expressly permitted by Whistle Communications;
* provided, however, that:
* 1. Any and all reproductions of the source or object code must include the
* copyright notice above and the following disclaimer of warranties; and
* 2. No rights are granted, in any manner or form, to use Whistle
* Communications, Inc. trademarks, including the mark "WHISTLE
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
* such appears in the above copyright notice or in the software.
*
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Support for the SMBus controller logical device which is part of the
* Intel 81801AA/AB/BA/CA/DC/EB (ICH/ICH[02345]) I/O controller hub chips.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/errno.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/syslog.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/smbus/smbconf.h>
#include <dev/ichsmb/ichsmb_var.h>
#include <dev/ichsmb/ichsmb_reg.h>
/* PCI unique identifiers */
#define ID_82801AA 0x24138086
#define ID_82801AB 0x24238086
#define ID_82801BA 0x24438086
#define ID_82801CA 0x24838086
#define ID_82801DC 0x24C38086
#define ID_82801EB 0x24D38086
#define ID_82801FB 0x266A8086
#define ID_82801GB 0x27da8086
#define ID_6300ESB 0x25a48086
#define ID_631xESB 0x269b8086
#define PCIS_SERIALBUS_SMBUS_PROGIF 0x00
/* Internal functions */
static int ichsmb_pci_probe(device_t dev);
static int ichsmb_pci_attach(device_t dev);
/*Use generic one for now*/
#if 0
static int ichsmb_pci_detach(device_t dev);
#endif
/* Device methods */
static device_method_t ichsmb_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ichsmb_pci_probe),
DEVMETHOD(device_attach, ichsmb_pci_attach),
DEVMETHOD(device_detach, ichsmb_detach),
/* Bus methods */
DEVMETHOD(bus_print_child, bus_generic_print_child),
/* SMBus methods */
DEVMETHOD(smbus_callback, ichsmb_callback),
DEVMETHOD(smbus_quick, ichsmb_quick),
DEVMETHOD(smbus_sendb, ichsmb_sendb),
DEVMETHOD(smbus_recvb, ichsmb_recvb),
DEVMETHOD(smbus_writeb, ichsmb_writeb),
DEVMETHOD(smbus_writew, ichsmb_writew),
DEVMETHOD(smbus_readb, ichsmb_readb),
DEVMETHOD(smbus_readw, ichsmb_readw),
DEVMETHOD(smbus_pcall, ichsmb_pcall),
DEVMETHOD(smbus_bwrite, ichsmb_bwrite),
DEVMETHOD(smbus_bread, ichsmb_bread),
{ 0, 0 }
};
static driver_t ichsmb_pci_driver = {
"ichsmb",
ichsmb_pci_methods,
sizeof(struct ichsmb_softc)
};
static devclass_t ichsmb_pci_devclass;
DRIVER_MODULE(ichsmb, pci, ichsmb_pci_driver, ichsmb_pci_devclass, 0, 0);
static int
ichsmb_pci_probe(device_t dev)
{
/* Check PCI identifier */
switch (pci_get_devid(dev)) {
case ID_82801AA:
device_set_desc(dev, "Intel 82801AA (ICH) SMBus controller");
break;
case ID_82801AB:
device_set_desc(dev, "Intel 82801AB (ICH0) SMBus controller");
break;
case ID_82801BA:
device_set_desc(dev, "Intel 82801BA (ICH2) SMBus controller");
break;
case ID_82801CA:
device_set_desc(dev, "Intel 82801CA (ICH3) SMBus controller");
break;
case ID_82801DC:
device_set_desc(dev, "Intel 82801DC (ICH4) SMBus controller");
break;
case ID_82801EB:
device_set_desc(dev, "Intel 82801EB (ICH5) SMBus controller");
break;
case ID_82801FB:
device_set_desc(dev, "Intel 82801FB (ICH6) SMBus controller");
break;
case ID_82801GB:
device_set_desc(dev, "Intel 82801GB (ICH7) SMBus controller");
break;
case ID_6300ESB:
device_set_desc(dev, "Intel 6300ESB (ICH) SMBus controller");
break;
case ID_631xESB:
device_set_desc(dev, "Intel 631xESB/6321ESB (ESB2) SMBus controller");
break;
default:
if (pci_get_class(dev) == PCIC_SERIALBUS
&& pci_get_subclass(dev) == PCIS_SERIALBUS_SMBUS
&& pci_get_progif(dev) == PCIS_SERIALBUS_SMBUS_PROGIF) {
device_set_desc(dev, "SMBus controller");
return (BUS_PROBE_DEFAULT); /* XXX */
}
return (ENXIO);
}
/* Done */
return (ichsmb_probe(dev));
}
static int
ichsmb_pci_attach(device_t dev)
{
const sc_p sc = device_get_softc(dev);
int error;
/* Initialize private state */
bzero(sc, sizeof(*sc));
sc->ich_cmd = -1;
sc->dev = dev;
/* Allocate an I/O range */
sc->io_rid = ICH_SMB_BASE;
sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
&sc->io_rid, 0, ~0, 16, RF_ACTIVE);
if (sc->io_res == NULL)
sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
&sc->io_rid, 0, ~0, 32, RF_ACTIVE);
if (sc->io_res == NULL) {
device_printf(dev, "can't map I/O\n");
error = ENXIO;
goto fail;
}
sc->io_bst = rman_get_bustag(sc->io_res);
sc->io_bsh = rman_get_bushandle(sc->io_res);
/* Allocate interrupt */
sc->irq_rid = 0;
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->irq_rid, RF_ACTIVE | RF_SHAREABLE);
if (sc->irq_res == NULL) {
device_printf(dev, "can't get IRQ\n");
error = ENXIO;
goto fail;
}
/* Enable device */
pci_write_config(dev, ICH_HOSTC, ICH_HOSTC_HST_EN, 1);
/* Done */
error = ichsmb_attach(dev);
if (error)
goto fail;
return (0);
fail:
/* Attach failed, release resources */
ichsmb_release_resources(sc);
return (error);
}
MODULE_DEPEND(ichsmb, pci, 1, 1, 1);
MODULE_DEPEND(ichsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
MODULE_VERSION(ichsmb, 1);
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