d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
f88e599fcb
freebsd-skq/sys/pci/alpm.c
Matthew N. Dodd fe0d408987 Remove the 'ivars' arguement to device_add_child() and 
device_add_child_ordered().  'ivars' may now be set using the
device_set_ivars() function.

This makes it easier for us to change how arbitrary data structures are
associated with a device_t.  Eventually we won't be modifying device_t
to add additional pointers for ivars, softc data etc.

Despite my best efforts I've probably forgotten something so let me know
if this breaks anything.  I've been running with this change for months
and its been quite involved actually isolating all the changes from
the rest of the local changes in my tree.

Reviewed by:	peter, dfr
1999-12-03 08:41:24 +00:00

667 lines
16 KiB
C
Raw Blame History

/*-
* Copyright (c) 1998, 1999 Nicolas Souchu
* 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.
*
* 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.
*
* $FreeBSD$
*
*/
/*
* Power Management support for the Acer M15x3 chipsets
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/buf.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <machine/clock.h>
#include <machine/bus_pio.h>
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <dev/iicbus/iiconf.h>
#include <dev/smbus/smbconf.h>
#include "smbus_if.h"
#include "alpm.h"
#define ALPM_DEBUG(x) if (alpm_debug) (x)
#ifdef DEBUG
static int alpm_debug = 1;
#else
static int alpm_debug = 0;
#endif
#define ACER_M1543_PMU_ID 0x710110b9
/* Uncomment this line to force another I/O base address for SMB */
/* #define ALPM_SMBIO_BASE_ADDR 0x3a80 */
/* I/O registers offsets - the base address is programmed via the
* SMBBA PCI configuration register
*/
#define SMBSTS 0x0 /* SMBus host/slave status register */
#define SMBCMD 0x1 /* SMBus host/slave command register */
#define SMBSTART 0x2 /* start to generate programmed cycle */
#define SMBHADDR 0x3 /* host address register */
#define SMBHDATA 0x4 /* data A register for host controller */
#define SMBHDATB 0x5 /* data B register for host controller */
#define SMBHBLOCK 0x6 /* block register for host controller */
#define SMBHCMD 0x7 /* command register for host controller */
/* SMBSTS masks */
#define TERMINATE 0x80
#define BUS_COLLI 0x40
#define DEVICE_ERR 0x20
#define SMI_I_STS 0x10
#define HST_BSY 0x08
#define IDL_STS 0x04
#define HSTSLV_STS 0x02
#define HSTSLV_BSY 0x01
/* SMBCMD masks */
#define SMB_BLK_CLR 0x80
#define T_OUT_CMD 0x08
#define ABORT_HOST 0x04
/* SMBus commands */
#define SMBQUICK 0x00
#define SMBSRBYTE 0x10 /* send/receive byte */
#define SMBWRBYTE 0x20 /* write/read byte */
#define SMBWRWORD 0x30 /* write/read word */
#define SMBWRBLOCK 0x40 /* write/read block */
/* PCI configuration registers and masks
*/
#define COM 0x4
#define COM_ENABLE_IO 0x1
#define SMBBA 0x14
#define ATPC 0x5b
#define ATPC_SMBCTRL 0x04
#define SMBHSI 0xe0
#define SMBHSI_SLAVE 0x2
#define SMBHSI_HOST 0x1
#define SMBHCBC 0xe2
#define SMBHCBC_CLOCK 0x70
#define SMBCLOCK_149K 0x0
#define SMBCLOCK_74K 0x20
#define SMBCLOCK_37K 0x40
#define SMBCLOCK_223K 0x80
#define SMBCLOCK_111K 0xa0
#define SMBCLOCK_55K 0xc0
struct alpm_data {
int base;
bus_space_tag_t smbst;
bus_space_handle_t smbsh;
pcici_t tag;
};
struct alpm_data alpmdata[NALPM];
struct alsmb_softc {
int base;
device_t smbus;
struct alpm_data *alpm;
};
#define ALPM_SMBINB(alsmb,register) \
(bus_space_read_1(alsmb->alpm->smbst, alsmb->alpm->smbsh, register))
#define ALPM_SMBOUTB(alsmb,register,value) \
(bus_space_write_1(alsmb->alpm->smbst, alsmb->alpm->smbsh, register, value))
static int alsmb_probe(device_t);
static int alsmb_attach(device_t);
static int alsmb_smb_callback(device_t, int, caddr_t *);
static int alsmb_smb_quick(device_t dev, u_char slave, int how);
static int alsmb_smb_sendb(device_t dev, u_char slave, char byte);
static int alsmb_smb_recvb(device_t dev, u_char slave, char *byte);
static int alsmb_smb_writeb(device_t dev, u_char slave, char cmd, char byte);
static int alsmb_smb_readb(device_t dev, u_char slave, char cmd, char *byte);
static int alsmb_smb_writew(device_t dev, u_char slave, char cmd, short word);
static int alsmb_smb_readw(device_t dev, u_char slave, char cmd, short *word);
static int alsmb_smb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf);
static int alsmb_smb_bread(device_t dev, u_char slave, char cmd, u_char count, char *byte);
static devclass_t alsmb_devclass;
static device_method_t alsmb_methods[] = {
/* device interface */
DEVMETHOD(device_probe, alsmb_probe),
DEVMETHOD(device_attach, alsmb_attach),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
/* smbus interface */
DEVMETHOD(smbus_callback, alsmb_smb_callback),
DEVMETHOD(smbus_quick, alsmb_smb_quick),
DEVMETHOD(smbus_sendb, alsmb_smb_sendb),
DEVMETHOD(smbus_recvb, alsmb_smb_recvb),
DEVMETHOD(smbus_writeb, alsmb_smb_writeb),
DEVMETHOD(smbus_readb, alsmb_smb_readb),
DEVMETHOD(smbus_writew, alsmb_smb_writew),
DEVMETHOD(smbus_readw, alsmb_smb_readw),
DEVMETHOD(smbus_bwrite, alsmb_smb_bwrite),
DEVMETHOD(smbus_bread, alsmb_smb_bread),
{ 0, 0 }
};
static driver_t alsmb_driver = {
"alsmb",
alsmb_methods,
sizeof(struct alsmb_softc),
};
static const char* alpm_pci_probe(pcici_t tag, pcidi_t type);
static void alpm_pci_attach(pcici_t tag, int unit);
static u_long alpm_count;
static struct pci_device alpm_device = {
"alpm",
alpm_pci_probe,
alpm_pci_attach,
&alpm_count
};
COMPAT_PCI_DRIVER (alpm, alpm_device);
static const char*
alpm_pci_probe(pcici_t tag, pcidi_t type)
{
if (type == ACER_M1543_PMU_ID)
return ("AcerLabs M15x3 Power Management Unit");
return ((char *)0);
}
static void
alpm_pci_attach(pcici_t tag, int unit)
{
struct alpm_data *alpm;
u_long l;
if (unit >= NALPM) {
printf("alpm%d: attach: only %d units configured.\n",
unit, NALPM);
return;
}
alpm = &alpmdata[unit];
alpm->tag = tag;
/* Unlock SMBIO base register access */
l = pci_cfgread(tag, ATPC, 1);
pci_cfgwrite(tag, ATPC, l & ~ATPC_SMBCTRL, 1);
if (bootverbose) {
l = pci_cfgread(tag, SMBHSI, 1);
printf("alsmb%d: %s/%s", unit,
(l & SMBHSI_HOST) ? "host":"nohost",
(l & SMBHSI_SLAVE) ? "slave":"noslave");
l = pci_cfgread(tag, SMBHCBC, 1);
switch (l & SMBHCBC_CLOCK) {
case SMBCLOCK_149K:
printf(" 149K");
break;
case SMBCLOCK_74K:
printf(" 74K");
break;
case SMBCLOCK_37K:
printf(" 37K");
break;
case SMBCLOCK_223K:
printf(" 223K");
break;
case SMBCLOCK_111K:
printf(" 111K");
break;
case SMBCLOCK_55K:
printf(" 55K");
break;
}
}
alpm->smbst = I386_BUS_SPACE_IO;
#ifdef ALPM_SMBIO_BASE_ADDR
/* disable I/O */
l = pci_cfgread(tag, COM, 2);
pci_cfgwrite(tag, COM, l & ~COM_ENABLE_IO, 2);
/* set the I/O base address */
pci_cfgwrite(tag, SMBBA, ALPM_SMBIO_BASE_ADDR | 0x1, 4);
/* enable I/O */
pci_cfgwrite(tag, COM, l | COM_ENABLE_IO, 2);
alpm->smbsh = ALPM_SMBIO_BASE_ADDR;
#else
alpm->smbsh = pci_cfgread(tag, SMBBA, 4) & ~0x1;
#endif
if (bootverbose)
printf(" at 0x%x\n", alpm->smbsh);
/* XXX add the I2C interface to the root_bus until pcibus is ready */
device_add_child(root_bus, "alsmb", unit);
return;
}
/*
* Not a real probe, we know the device exists since the device has
* been added after the successfull pci probe.
*/
static int
alsmb_probe(device_t dev)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
sc->alpm = &alpmdata[device_get_unit(dev)];
device_set_desc(dev, "Aladdin IV/V/Pro2 SMBus controller");
return (0);
}
static int
alsmb_attach(device_t dev)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
/* allocate a new smbus device */
sc->smbus = smbus_alloc_bus(dev);
/* probe and attach the smbus */
device_probe_and_attach(sc->smbus);
return (0);
}
static int
alsmb_smb_callback(device_t dev, int index, caddr_t *data)
{
int error = 0;
switch (index) {
case SMB_REQUEST_BUS:
case SMB_RELEASE_BUS:
/* ok, bus allocation accepted */
break;
default:
error = EINVAL;
}
return (error);
}
static int
alsmb_clear(struct alsmb_softc *sc)
{
ALPM_SMBOUTB(sc, SMBSTS, 0xff);
DELAY(10);
return (0);
}
#if 0
static int
alsmb_abort(struct alsmb_softc *sc)
{
ALPM_SMBOUTB(sc, SMBCMD, T_OUT_CMD | ABORT_HOST);
return (0);
}
#endif
static int
alsmb_idle(struct alsmb_softc *sc)
{
u_char sts;
sts = ALPM_SMBINB(sc, SMBSTS);
ALPM_DEBUG(printf("alpm: idle? STS=0x%x\n", sts));
return (sts & IDL_STS);
}
/*
* Poll the SMBus controller
*/
static int
alsmb_wait(struct alsmb_softc *sc)
{
int count = 10000;
u_char sts;
int error;
/* wait for command to complete and SMBus controller is idle */
while(count--) {
DELAY(10);
sts = ALPM_SMBINB(sc, SMBSTS);
if (sts & SMI_I_STS)
break;
}
ALPM_DEBUG(printf("alpm: STS=0x%x\n", sts));
error = SMB_ENOERR;
if (!count)
error |= SMB_ETIMEOUT;
if (sts & TERMINATE)
error |= SMB_EABORT;
if (sts & BUS_COLLI)
error |= SMB_ENOACK;
if (sts & DEVICE_ERR)
error |= SMB_EBUSERR;
if (error != SMB_ENOERR)
alsmb_clear(sc);
return (error);
}
static int
alsmb_smb_quick(device_t dev, u_char slave, int how)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (EBUSY);
switch (how) {
case SMB_QWRITE:
ALPM_DEBUG(printf("alpm: QWRITE to 0x%x", slave));
ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
break;
case SMB_QREAD:
ALPM_DEBUG(printf("alpm: QREAD to 0x%x", slave));
ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
break;
default:
panic("%s: unknown QUICK command (%x)!", __FUNCTION__,
how);
}
ALPM_SMBOUTB(sc, SMBCMD, SMBQUICK);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
error = alsmb_wait(sc);
ALPM_DEBUG(printf(", error=0x%x\n", error));
return (error);
}
static int
alsmb_smb_sendb(device_t dev, u_char slave, char byte)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
ALPM_SMBOUTB(sc, SMBCMD, SMBSRBYTE);
ALPM_SMBOUTB(sc, SMBHDATA, byte);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
error = alsmb_wait(sc);
ALPM_DEBUG(printf("alpm: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
return (error);
}
static int
alsmb_smb_recvb(device_t dev, u_char slave, char *byte)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
ALPM_SMBOUTB(sc, SMBCMD, SMBSRBYTE);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
if ((error = alsmb_wait(sc)) == SMB_ENOERR)
*byte = ALPM_SMBINB(sc, SMBHDATA);
ALPM_DEBUG(printf("alpm: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
return (error);
}
static int
alsmb_smb_writeb(device_t dev, u_char slave, char cmd, char byte)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
ALPM_SMBOUTB(sc, SMBCMD, SMBWRBYTE);
ALPM_SMBOUTB(sc, SMBHDATA, byte);
ALPM_SMBOUTB(sc, SMBHCMD, cmd);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
error = alsmb_wait(sc);
ALPM_DEBUG(printf("alpm: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
return (error);
}
static int
alsmb_smb_readb(device_t dev, u_char slave, char cmd, char *byte)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
ALPM_SMBOUTB(sc, SMBCMD, SMBWRBYTE);
ALPM_SMBOUTB(sc, SMBHCMD, cmd);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
if ((error = alsmb_wait(sc)) == SMB_ENOERR)
*byte = ALPM_SMBINB(sc, SMBHDATA);
ALPM_DEBUG(printf("alpm: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, *byte, error));
return (error);
}
static int
alsmb_smb_writew(device_t dev, u_char slave, char cmd, short word)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
ALPM_SMBOUTB(sc, SMBCMD, SMBWRWORD);
ALPM_SMBOUTB(sc, SMBHDATA, word & 0x00ff);
ALPM_SMBOUTB(sc, SMBHDATB, (word & 0xff00) >> 8);
ALPM_SMBOUTB(sc, SMBHCMD, cmd);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
error = alsmb_wait(sc);
ALPM_DEBUG(printf("alpm: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
return (error);
}
static int
alsmb_smb_readw(device_t dev, u_char slave, char cmd, short *word)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
int error;
u_char high, low;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
ALPM_SMBOUTB(sc, SMBCMD, SMBWRWORD);
ALPM_SMBOUTB(sc, SMBHCMD, cmd);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
if ((error = alsmb_wait(sc)) == SMB_ENOERR) {
low = ALPM_SMBINB(sc, SMBHDATA);
high = ALPM_SMBINB(sc, SMBHDATB);
*word = ((high & 0xff) << 8) | (low & 0xff);
}
ALPM_DEBUG(printf("alpm: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, *word, error));
return (error);
}
static int
alsmb_smb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
u_char remain, len, i;
int error = SMB_ENOERR;
alsmb_clear(sc);
if(!alsmb_idle(sc))
return (SMB_EBUSY);
remain = count;
while (remain) {
len = min(remain, 32);
ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
/* set the cmd and reset the
* 32-byte long internal buffer */
ALPM_SMBOUTB(sc, SMBCMD, SMBWRBLOCK | SMB_BLK_CLR);
ALPM_SMBOUTB(sc, SMBHDATA, len);
/* fill the 32-byte internal buffer */
for (i=0; i<len; i++) {
ALPM_SMBOUTB(sc, SMBHBLOCK, buf[count-remain+i]);
DELAY(2);
}
ALPM_SMBOUTB(sc, SMBHCMD, cmd);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
if ((error = alsmb_wait(sc)) != SMB_ENOERR)
goto error;
remain -= len;
}
error:
ALPM_DEBUG(printf("alpm: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
return (error);
}
static int
alsmb_smb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct alsmb_softc *sc = (struct alsmb_softc *)device_get_softc(dev);
u_char remain, len, i;
int error = SMB_ENOERR;
alsmb_clear(sc);
if (!alsmb_idle(sc))
return (SMB_EBUSY);
remain = count;
while (remain) {
ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
/* set the cmd and reset the
* 32-byte long internal buffer */
ALPM_SMBOUTB(sc, SMBCMD, SMBWRBLOCK | SMB_BLK_CLR);
ALPM_SMBOUTB(sc, SMBHCMD, cmd);
ALPM_SMBOUTB(sc, SMBSTART, 0xff);
if ((error = alsmb_wait(sc)) != SMB_ENOERR)
goto error;
len = ALPM_SMBINB(sc, SMBHDATA);
/* read the 32-byte internal buffer */
for (i=0; i<len; i++) {
buf[count-remain+i] = ALPM_SMBINB(sc, SMBHBLOCK);
DELAY(2);
}
remain -= len;
}
error:
ALPM_DEBUG(printf("alpm: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
return (error);
}
DRIVER_MODULE(alsmb, root, alsmb_driver, alsmb_devclass, 0, 0);
Reference in New Issue View Git Blame Copy Permalink