5cf1e3c8c0
interface on this chip is compatable with the PIIX4. The catch is that this interferes with isab0 which wants to attach to the same PCI node. It seems to work, but we only tested it on systems with no ISA cards.
750 lines
22 KiB
C
750 lines
22 KiB
C
/*-
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* Copyright (c) 1998, 1999 Takanori Watanabe
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <machine/bus_pio.h>
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#include <machine/bus_memio.h>
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#include <machine/bus.h>
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#include <sys/uio.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/smbus/smbconf.h>
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#include "smbus_if.h"
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/*This should be removed if force_pci_map_int supported*/
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#include <sys/interrupt.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <pci/intpmreg.h>
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#include "opt_intpm.h"
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static struct _pcsid
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{
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u_int32_t type;
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char *desc;
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} pci_ids[] =
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{
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{ 0x71138086,"Intel 82371AB Power management controller"},
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#if 0
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/* Not a good idea yet, this stops isab0 functioning */
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{ 0x02001166,"ServerWorks OSB4 PCI to ISA Bridge"},
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#endif
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{ 0x00000000, NULL }
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};
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static int intsmb_probe(device_t);
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static int intsmb_attach(device_t);
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static int intsmb_intr(device_t dev);
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static int intsmb_slvintr(device_t dev);
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static void intsmb_alrintr(device_t dev);
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static int intsmb_callback(device_t dev, int index, caddr_t data);
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static int intsmb_quick(device_t dev, u_char slave, int how);
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static int intsmb_sendb(device_t dev, u_char slave, char byte);
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static int intsmb_recvb(device_t dev, u_char slave, char *byte);
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static int intsmb_writeb(device_t dev, u_char slave, char cmd, char byte);
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static int intsmb_writew(device_t dev, u_char slave, char cmd, short word);
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static int intsmb_readb(device_t dev, u_char slave, char cmd, char *byte);
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static int intsmb_readw(device_t dev, u_char slave, char cmd, short *word);
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static int intsmb_pcall(device_t dev, u_char slave, char cmd, short sdata, short *rdata);
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static int intsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf);
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static int intsmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf);
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static void intsmb_start(device_t dev,u_char cmd,int nointr);
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static int intsmb_stop(device_t dev);
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static int intsmb_stop_poll(device_t dev);
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static int intsmb_free(device_t dev);
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static int intpm_probe (device_t dev);
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static int intpm_attach (device_t dev);
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static devclass_t intsmb_devclass;
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static device_method_t intpm_methods[]={
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DEVMETHOD(device_probe,intsmb_probe),
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DEVMETHOD(device_attach,intsmb_attach),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(smbus_callback,intsmb_callback),
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DEVMETHOD(smbus_quick,intsmb_quick),
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DEVMETHOD(smbus_sendb,intsmb_sendb),
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DEVMETHOD(smbus_recvb,intsmb_recvb),
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DEVMETHOD(smbus_writeb,intsmb_writeb),
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DEVMETHOD(smbus_writew,intsmb_writew),
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DEVMETHOD(smbus_readb,intsmb_readb),
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DEVMETHOD(smbus_readw,intsmb_readw),
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DEVMETHOD(smbus_pcall,intsmb_pcall),
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DEVMETHOD(smbus_bwrite,intsmb_bwrite),
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DEVMETHOD(smbus_bread,intsmb_bread),
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{0,0}
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};
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struct intpm_pci_softc{
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bus_space_tag_t smbst;
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bus_space_handle_t smbsh;
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bus_space_tag_t pmst;
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bus_space_handle_t pmsh;
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device_t smbus;
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};
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struct intsmb_softc{
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struct intpm_pci_softc *pci_sc;
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bus_space_tag_t st;
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bus_space_handle_t sh;
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device_t smbus;
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int isbusy;
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};
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static driver_t intpm_driver = {
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"intsmb",
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intpm_methods,
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sizeof(struct intsmb_softc),
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};
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static devclass_t intpm_devclass;
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static device_method_t intpm_pci_methods[] = {
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DEVMETHOD(device_probe,intpm_probe),
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DEVMETHOD(device_attach,intpm_attach),
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{0,0}
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};
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static driver_t intpm_pci_driver = {
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"intpm",
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intpm_pci_methods,
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sizeof(struct intpm_pci_softc)
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};
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static int
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intsmb_probe(device_t dev)
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{
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struct intsmb_softc *sc =(struct intsmb_softc *) device_get_softc(dev);
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sc->smbus=smbus_alloc_bus(dev);
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if (!sc->smbus)
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return (EINVAL); /* XXX don't know what to return else */
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device_set_desc(dev,"Intel PIIX4 SMBUS Interface");
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return (0); /* XXX don't know what to return else */
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}
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static int
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intsmb_attach(device_t dev)
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{
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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sc->pci_sc=device_get_softc(device_get_parent(dev));
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sc->isbusy=0;
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sc->sh=sc->pci_sc->smbsh;
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sc->st=sc->pci_sc->smbst;
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sc->pci_sc->smbus=dev;
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device_probe_and_attach(sc->smbus);
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#ifdef ENABLE_ALART
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/*Enable Arart*/
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,
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PIIX4_SMBSLVCNT_ALTEN);
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#endif
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return (0);
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}
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static int
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intsmb_callback(device_t dev, int index, caddr_t data)
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{
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int error = 0;
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intrmask_t s;
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s=splnet();
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switch (index) {
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case SMB_REQUEST_BUS:
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break;
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case SMB_RELEASE_BUS:
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break;
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default:
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error = EINVAL;
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}
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splx(s);
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return (error);
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}
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/*counterpart of smbtx_smb_free*/
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static int
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intsmb_free(device_t dev){
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intrmask_t s;
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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if((bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS)&
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PIIX4_SMBHSTSTAT_BUSY)
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#ifdef ENABLE_ALART
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||(bus_space_read_1(sc->st,sc->sh,PIIX4_SMBSLVSTS)&
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PIIX4_SMBSLVSTS_BUSY)
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#endif
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|| sc->isbusy)
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return EBUSY;
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s=splhigh();
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sc->isbusy=1;
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/*Disable Intrrupt in slave part*/
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#ifndef ENABLE_ALART
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,0);
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#endif
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/*Reset INTR Flag to prepare INTR*/
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTSTS,
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(PIIX4_SMBHSTSTAT_INTR|
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PIIX4_SMBHSTSTAT_ERR|
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PIIX4_SMBHSTSTAT_BUSC|
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PIIX4_SMBHSTSTAT_FAIL)
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);
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splx(s);
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return 0;
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}
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static int
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intsmb_intr(device_t dev)
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{
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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int status;
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status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS);
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if(status&PIIX4_SMBHSTSTAT_BUSY){
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return 1;
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}
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if(status&(PIIX4_SMBHSTSTAT_INTR|
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PIIX4_SMBHSTSTAT_ERR|
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PIIX4_SMBHSTSTAT_BUSC|
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PIIX4_SMBHSTSTAT_FAIL)){
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int tmp;
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tmp=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCNT,
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tmp&~PIIX4_SMBHSTCNT_INTREN);
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if(sc->isbusy){
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sc->isbusy=0;
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wakeup(sc);
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}
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return 0;
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}
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return 1;/* Not Completed*/
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}
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static int
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intsmb_slvintr(device_t dev)
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{
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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int status,retval;
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retval=1;
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status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBSLVSTS);
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if(status&PIIX4_SMBSLVSTS_BUSY)
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return retval;
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if(status&PIIX4_SMBSLVSTS_ALART){
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intsmb_alrintr(dev);
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retval=0;
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}else if(status&~(PIIX4_SMBSLVSTS_ALART|PIIX4_SMBSLVSTS_SDW2
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|PIIX4_SMBSLVSTS_SDW1)){
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retval=0;
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}
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/*Reset Status Register*/
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVSTS,PIIX4_SMBSLVSTS_ALART|
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PIIX4_SMBSLVSTS_SDW2|PIIX4_SMBSLVSTS_SDW1|
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PIIX4_SMBSLVSTS_SLV);
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return retval;
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}
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static void intsmb_alrintr(device_t dev)
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{
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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int slvcnt;
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#ifdef ENABLE_ALART
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int error;
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#endif
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/*stop generating INTR from ALART*/
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slvcnt=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBSLVCNT);
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#ifdef ENABLE_ALART
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,
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slvcnt&~PIIX4_SMBSLVCNT_ALTEN) ;
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#endif
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DELAY(5);
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/*ask bus who assert it and then ask it what's the matter. */
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#ifdef ENABLE_ALART
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error=intsmb_free(dev);
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if(!error){
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,SMBALTRESP
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|LSB);
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intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BYTE,1);
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if(!(error=intsmb_stop_poll(dev))){
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volatile u_int8_t *addr;
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addr=bus_space_read_1(sc->st,sc->sh,
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PIIX4_SMBHSTDAT0);
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printf("ALART_RESPONSE: %p\n", addr);
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}
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}else{
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printf("ERROR\n");
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}
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/*Re-enable INTR from ALART*/
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBSLVCNT,
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slvcnt|PIIX4_SMBSLVCNT_ALTEN) ;
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DELAY(5);
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#endif
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return;
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}
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static void
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intsmb_start(device_t dev,unsigned char cmd,int nointr)
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{
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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unsigned char tmp;
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tmp=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
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tmp&= 0xe0;
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tmp |= cmd;
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tmp |=PIIX4_SMBHSTCNT_START;
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/*While not in autoconfiguration Intrrupt Enabled*/
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if(!cold||!nointr)
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tmp |=PIIX4_SMBHSTCNT_INTREN;
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCNT,tmp);
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}
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/*Polling Code. Polling is not encouraged
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* because It is required to wait for the device get busy.
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*(29063505.pdf from Intel)
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* But during boot,intrrupt cannot be used.
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* so use polling code while in autoconfiguration.
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*/
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static int
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intsmb_stop_poll(device_t dev){
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int error,i;
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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/*
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* In smbtx driver ,Simply waiting.
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* This loops 100-200 times.
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*/
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for(i=0;i<0x7fff;i++){
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if((bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS)
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&PIIX4_SMBHSTSTAT_BUSY)){
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break;
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}
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}
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for(i=0;i<0x7fff;i++){
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int status;
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status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS);
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if(!(status&PIIX4_SMBHSTSTAT_BUSY)){
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sc->isbusy=0;
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error=(status&PIIX4_SMBHSTSTAT_ERR)?EIO :
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(status&PIIX4_SMBHSTSTAT_BUSC)?EBUSY:
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(status&PIIX4_SMBHSTSTAT_FAIL)?EIO:0;
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if(error==0&&!(status&PIIX4_SMBHSTSTAT_INTR)){
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printf("unknown cause why?");
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}
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return error;
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}
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}
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{
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int tmp;
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sc->isbusy=0;
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tmp=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCNT,
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tmp&~PIIX4_SMBHSTCNT_INTREN);
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}
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return EIO;
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}
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/*
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*wait for completion and return result.
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*/
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static int
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intsmb_stop(device_t dev){
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int error;
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intrmask_t s;
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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if(cold){
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/*So that it can use device during probing device on SMBus.*/
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error=intsmb_stop_poll(dev);
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return error;
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}else{
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if(!tsleep(sc,(PWAIT)|PCATCH,"SMBWAI",hz/8)){
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int status;
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status=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTSTS);
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if(!(status&PIIX4_SMBHSTSTAT_BUSY)){
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error=(status&PIIX4_SMBHSTSTAT_ERR)?EIO :
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(status&PIIX4_SMBHSTSTAT_BUSC)?EBUSY:
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(status&PIIX4_SMBHSTSTAT_FAIL)?EIO:0;
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if(error==0&&!(status&PIIX4_SMBHSTSTAT_INTR)){
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printf("intsmb%d:unknown cause why?\n",
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device_get_unit(dev));
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}
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#ifdef ENABLE_ALART
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bus_space_write_1(sc->st,sc->sh,
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PIIX4_SMBSLVCNT,PIIX4_SMBSLVCNT_ALTEN);
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#endif
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return error;
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}
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}
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}
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/*Timeout Procedure*/
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s=splhigh();
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sc->isbusy=0;
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/*Re-enable supressed intrrupt from slave part*/
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bus_space_write_1(sc->st,sc->sh,
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PIIX4_SMBSLVCNT,PIIX4_SMBSLVCNT_ALTEN);
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splx(s);
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return EIO;
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}
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static int
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intsmb_quick(device_t dev, u_char slave, int how)
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{
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int error=0;
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u_char data;
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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data=slave;
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/*Quick command is part of Address, I think*/
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switch(how){
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case SMB_QWRITE:
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data&=~LSB;
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break;
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case SMB_QREAD:
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data|=LSB;
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break;
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default:
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error=EINVAL;
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}
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if(!error){
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error=intsmb_free(dev);
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if(!error){
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bus_space_write_1(sc->st,sc->sh,
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PIIX4_SMBHSTADD,data);
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intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_QUICK,0);
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error=intsmb_stop(dev);
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}
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}
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return (error);
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}
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static int
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intsmb_sendb(device_t dev, u_char slave, char byte)
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{
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int error;
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struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
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error=intsmb_free(dev);
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if(!error){
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
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bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,byte);
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intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BYTE,0);
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error=intsmb_stop(dev);
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}
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|
return (error);
|
|
}
|
|
static int
|
|
intsmb_recvb(device_t dev, u_char slave, char *byte)
|
|
{
|
|
int error;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(!error){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave
|
|
|LSB);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BYTE,0);
|
|
if(!(error=intsmb_stop(dev))){
|
|
#ifdef RECV_IS_IN_CMD
|
|
/*Linux SMBus stuff also troubles
|
|
Because Intel's datasheet will not make clear.
|
|
*/
|
|
*byte=bus_space_read_1(sc->st,sc->sh,
|
|
PIIX4_SMBHSTCMD);
|
|
#else
|
|
*byte=bus_space_read_1(sc->st,sc->sh,
|
|
PIIX4_SMBHSTDAT0);
|
|
#endif
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
static int
|
|
intsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
|
|
{
|
|
int error;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(!error){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,byte);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BDATA,0);
|
|
error=intsmb_stop(dev);
|
|
}
|
|
return (error);
|
|
}
|
|
static int
|
|
intsmb_writew(device_t dev, u_char slave, char cmd, short word)
|
|
{
|
|
int error;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(!error){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,
|
|
word&0xff);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1,
|
|
(word>>8)&0xff);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_WDATA,0);
|
|
error=intsmb_stop(dev);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
intsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
|
|
{
|
|
int error;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(!error){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave|LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BDATA,0);
|
|
if(!(error=intsmb_stop(dev))){
|
|
*byte=bus_space_read_1(sc->st,sc->sh,
|
|
PIIX4_SMBHSTDAT0);
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
static int
|
|
intsmb_readw(device_t dev, u_char slave, char cmd, short *word)
|
|
{
|
|
int error;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(!error){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave|LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_WDATA,0);
|
|
if(!(error=intsmb_stop(dev))){
|
|
*word=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0)&0xff;
|
|
*word|=(bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1)&0xff)<<8;
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
/*
|
|
* Data sheet claims that it implements all function, but also claims
|
|
* that it implements 7 function and not mention PCALL. So I don't know
|
|
* whether it will work.
|
|
*/
|
|
static int
|
|
intsmb_pcall(device_t dev, u_char slave, char cmd, short sdata, short *rdata)
|
|
{
|
|
#ifdef PROCCALL_TEST
|
|
int error;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(!error){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,sdata&0xff);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1,(sdata&0xff)>>8);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_WDATA,0);
|
|
}
|
|
if(!(error=intsmb_stop(dev))){
|
|
*rdata=bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0)&0xff;
|
|
*rdata|=(bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTDAT1)&0xff)<<8;
|
|
}
|
|
return error;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
static int
|
|
intsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
|
|
{
|
|
int error,i;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(count>SMBBLOCKTRANS_MAX||count==0)
|
|
error=EINVAL;
|
|
if(!error){
|
|
/*Reset internal array index*/
|
|
bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
|
|
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave&~LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
for(i=0;i<count;i++){
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBBLKDAT,buf[i]);
|
|
}
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,count);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BLOCK,0);
|
|
error=intsmb_stop(dev);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
intsmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf)
|
|
{
|
|
int error,i;
|
|
struct intsmb_softc *sc = (struct intsmb_softc *)device_get_softc(dev);
|
|
error=intsmb_free(dev);
|
|
if(count>SMBBLOCKTRANS_MAX||count==0)
|
|
error=EINVAL;
|
|
if(!error){
|
|
/*Reset internal array index*/
|
|
bus_space_read_1(sc->st,sc->sh,PIIX4_SMBHSTCNT);
|
|
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTADD,slave|LSB);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTCMD,cmd);
|
|
bus_space_write_1(sc->st,sc->sh,PIIX4_SMBHSTDAT0,count);
|
|
intsmb_start(dev,PIIX4_SMBHSTCNT_PROT_BLOCK,0);
|
|
error=intsmb_stop(dev);
|
|
if(!error){
|
|
bzero(buf,count);/*Is it needed?*/
|
|
count= bus_space_read_1(sc->st,sc->sh,
|
|
PIIX4_SMBHSTDAT0);
|
|
if(count!=0&&count<=SMBBLOCKTRANS_MAX){
|
|
for(i=0;i<count;i++){
|
|
buf[i]=bus_space_read_1(sc->st,
|
|
sc->sh,
|
|
PIIX4_SMBBLKDAT);
|
|
}
|
|
}
|
|
else{
|
|
error=EIO;
|
|
}
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
DRIVER_MODULE(intsmb, intpm , intpm_driver, intsmb_devclass, 0, 0);
|
|
|
|
|
|
static void intpm_intr __P((void *arg));
|
|
static int
|
|
intpm_attach(device_t dev)
|
|
{
|
|
int value;
|
|
int unit=device_get_unit(dev);
|
|
void *ih;
|
|
int error;
|
|
char * str;
|
|
{
|
|
struct intpm_pci_softc *sciic;
|
|
device_t smbinterface;
|
|
int rid;
|
|
struct resource *res;
|
|
|
|
sciic=device_get_softc(dev);
|
|
if(sciic==NULL){
|
|
return ENOMEM;
|
|
}
|
|
|
|
rid=PCI_BASE_ADDR_SMB;
|
|
res=bus_alloc_resource(dev,SYS_RES_IOPORT,&rid,
|
|
0,~0,1,RF_ACTIVE);
|
|
if(res==NULL){
|
|
device_printf(dev,"Could not allocate Bus space\n");
|
|
return ENXIO;
|
|
}
|
|
sciic->smbst=rman_get_bustag(res);
|
|
sciic->smbsh=rman_get_bushandle(res);
|
|
|
|
device_printf(dev,"%s %x\n",
|
|
(sciic->smbst==I386_BUS_SPACE_IO)?
|
|
"I/O mapped":"Memory",
|
|
sciic->smbsh);
|
|
|
|
|
|
#ifndef NO_CHANGE_PCICONF
|
|
pci_write_config(dev,PCIR_INTLINE,0x9,1);
|
|
pci_write_config(dev,PCI_HST_CFG_SMB,
|
|
PCI_INTR_SMB_IRQ9|PCI_INTR_SMB_ENABLE,1);
|
|
#endif
|
|
value=pci_read_config(dev,PCI_HST_CFG_SMB,1);
|
|
switch(value&0xe){
|
|
case PCI_INTR_SMB_SMI:
|
|
str="SMI";
|
|
break;
|
|
case PCI_INTR_SMB_IRQ9:
|
|
str="IRQ 9";
|
|
break;
|
|
default:
|
|
str="BOGUS";
|
|
}
|
|
device_printf(dev,"intr %s %s ",str,((value&1)? "enabled":"disabled"));
|
|
value=pci_read_config(dev,PCI_REVID_SMB,1);
|
|
printf("revision %d\n",value);
|
|
/*
|
|
* Install intr HANDLER here
|
|
*/
|
|
rid=0;
|
|
res=bus_alloc_resource(dev,SYS_RES_IRQ,&rid,9,9,1,RF_SHAREABLE|RF_ACTIVE);
|
|
if(res==NULL){
|
|
device_printf(dev,"could not allocate irq");
|
|
return ENOMEM;
|
|
}
|
|
error=bus_setup_intr(dev,res,INTR_TYPE_MISC, (driver_intr_t *) intpm_intr,sciic,&ih);
|
|
if(error){
|
|
device_printf(dev,"Failed to map intr\n");
|
|
return error;
|
|
}
|
|
smbinterface=device_add_child(dev,"intsmb",unit);
|
|
if(!smbinterface){
|
|
printf("intsmb%d:could not add SMBus device\n",unit);
|
|
}
|
|
device_probe_and_attach(smbinterface);
|
|
}
|
|
|
|
value=pci_read_config(dev,PCI_BASE_ADDR_PM,4);
|
|
printf("intpm%d: PM %s %x \n",unit,(value&1)?"I/O mapped":"Memory",value&0xfffe);
|
|
return 0;
|
|
}
|
|
static int
|
|
intpm_probe(device_t dev)
|
|
{
|
|
struct _pcsid *ep =pci_ids;
|
|
u_int32_t device_id=pci_get_devid(dev);
|
|
|
|
while (ep->type && ep->type != device_id)
|
|
++ep;
|
|
if(ep->desc!=NULL){
|
|
device_set_desc(dev,ep->desc);
|
|
bus_set_resource(dev,SYS_RES_IRQ,0,9,1); /* XXX setup intr resource */
|
|
return 0;
|
|
}else{
|
|
return ENXIO;
|
|
}
|
|
}
|
|
DRIVER_MODULE(intpm, pci , intpm_pci_driver, intpm_devclass, 0, 0);
|
|
|
|
static void intpm_intr(void *arg)
|
|
{
|
|
struct intpm_pci_softc *sc;
|
|
sc=(struct intpm_pci_softc *)arg;
|
|
intsmb_intr(sc->smbus);
|
|
intsmb_slvintr(sc->smbus);
|
|
|
|
}
|