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Drivers for AMD-8111 and NVIDIA nForce2/3/4 SMBus 2.0 controllers.

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This commit is contained in:
Ruslan Ermilov 2005-12-21 15:49:51 +00:00
parent 87f34c405b
commit 4d5f30e06e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=153618
8 changed files with 1105 additions and 2 deletions
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6
sys/conf/NOTES
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@ -2167,7 +2167,7 @@ device cardbus
# which is a child of the 'smbus' device.
#
# Supported devices:
# smb standard io through /dev/smb*
# smb standard I/O through /dev/smb*
#
# Supported SMB interfaces:
# iicsmb I2C to SMB bridge with any iicbus interface
@ -2177,7 +2177,9 @@ device cardbus
# ichsmb Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
# viapm VIA VT82C586B/596B/686A and VT8233 Power Management Unit
# amdpm AMD 756 Power Management Unit
# amdsmb AMD 8111 SMBus 2.0 Controller
# nfpm NVIDIA nForce Power Management Unit
# nfsmb NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
#
device smbus # Bus support, required for smb below.
@ -2186,7 +2188,9 @@ device alpm
device ichsmb
device viapm
device amdpm
device amdsmb
device nfpm
device nfsmb
device smb

2
sys/conf/files
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@ -1794,6 +1794,7 @@ pci/agp.c optional agp pci
pci/agp_if.m optional agp pci
pci/alpm.c optional alpm pci
pci/amdpm.c optional amdpm pci | nfpm pci
pci/amdsmb.c optional amdsmb pci
pci/if_de.c optional de pci
pci/if_mn.c optional mn pci
pci/if_pcn.c optional pcn pci
@ -1808,6 +1809,7 @@ pci/if_wb.c optional wb pci
pci/if_xl.c optional xl pci
pci/intpm.c optional intpm pci
pci/ncr.c optional ncr pci
pci/nfsmb.c optional nfsmb pci
pci/viapm.c optional viapm pci
pci/xrpu.c optional xrpu pci
posix4/ksched.c optional _kposix_priority_scheduling

2
sys/dev/smbus/smbus.c
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@ -103,5 +103,7 @@ DRIVER_MODULE(smbus, intsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, alpm, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, ichsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, amdpm, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, amdsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, nfsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, viapropm, smbus_driver, smbus_devclass, 0, 0);
MODULE_VERSION(smbus, SMBUS_MODVER);

2
sys/modules/i2c/controllers/Makefile
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@ -3,7 +3,7 @@
.if ${MACHINE} == "pc98"
SUBDIR = lpbb
.else
SUBDIR = alpm amdpm ichsmb intpm viapm lpbb pcf
SUBDIR = alpm amdpm amdsmb ichsmb intpm nfsmb viapm lpbb pcf
.endif
.include <bsd.subdir.mk>

9
sys/modules/i2c/controllers/amdsmb/Makefile Normal file
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@ -0,0 +1,9 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../../../pci
KMOD= amdsmb
SRCS= amdsmb.c
SRCS+= device_if.h smbus_if.h pci_if.h bus_if.h
.include <bsd.kmod.mk>

9
sys/modules/i2c/controllers/nfsmb/Makefile Normal file
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@ -0,0 +1,9 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../../../../pci
KMOD= nfsmb
SRCS= nfsmb.c
SRCS+= device_if.h smbus_if.h pci_if.h bus_if.h
.include <bsd.kmod.mk>

524
sys/pci/amdsmb.c Normal file
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@ -0,0 +1,524 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/uio.h>
#include <machine/bus.h>
#include <machine/clock.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/iicbus/iiconf.h>
#include <dev/smbus/smbconf.h>
#include "smbus_if.h"
#define AMDSMB_DEBUG(x) if (amdsmb_debug) (x)
#ifdef DEBUG
static int amdsmb_debug = 1;
#else
static int amdsmb_debug = 0;
#endif
#define AMDSMB_VENDORID_AMD 0x1022
#define AMDSMB_DEVICEID_AMD8111_SMB2 0x746a
/*
* ACPI 3.0, Chapter 12, Embedded Controller Interface.
*/
#define EC_DATA 0x00 /* data register */
#define EC_SC 0x04 /* status of controller */
#define EC_CMD 0x04 /* command register */
#define EC_SC_IBF 0x02 /* data ready for embedded controller */
#define EC_SC_OBF 0x01 /* data ready for host */
#define EC_CMD_WR 0x81 /* write EC */
#define EC_CMD_RD 0x80 /* read EC */
/*
* ACPI 3.0, Chapter 12, SMBus Host Controller Interface.
*/
#define SMB_PRTCL 0x00 /* protocol */
#define SMB_STS 0x01 /* status */
#define SMB_ADDR 0x02 /* address */
#define SMB_CMD 0x03 /* command */
#define SMB_DATA 0x04 /* 32 data registers */
#define SMB_BCNT 0x24 /* number of data bytes */
#define SMB_ALRM_A 0x25 /* alarm address */
#define SMB_ALRM_D 0x26 /* 2 bytes alarm data */
#define SMB_STS_DONE 0x80
#define SMB_STS_ALRM 0x40
#define SMB_STS_RES 0x20
#define SMB_STS_STATUS 0x1f
#define SMB_STS_OK 0x00 /* OK */
#define SMB_STS_UF 0x07 /* Unknown Failure */
#define SMB_STS_DANA 0x10 /* Device Address Not Acknowledged */
#define SMB_STS_DED 0x11 /* Device Error Detected */
#define SMB_STS_DCAD 0x12 /* Device Command Access Denied */
#define SMB_STS_UE 0x13 /* Unknown Error */
#define SMB_STS_DAD 0x17 /* Device Access Denied */
#define SMB_STS_T 0x18 /* Timeout */
#define SMB_STS_HUP 0x19 /* Host Unsupported Protocol */
#define SMB_STS_B 0x1a /* Busy */
#define SMB_STS_PEC 0x1f /* PEC (CRC-8) Error */
#define SMB_PRTCL_WRITE 0x00
#define SMB_PRTCL_READ 0x01
#define SMB_PRTCL_QUICK 0x02
#define SMB_PRTCL_BYTE 0x04
#define SMB_PRTCL_BYTE_DATA 0x06
#define SMB_PRTCL_WORD_DATA 0x08
#define SMB_PRTCL_BLOCK_DATA 0x0a
#define SMB_PRTCL_PROC_CALL 0x0c
#define SMB_PRTCL_BLOCK_PROC_CALL 0x0d
#define SMB_PRTCL_PEC 0x80
struct amdsmb_softc {
int rid;
struct resource *res;
bus_space_tag_t smbst;
bus_space_handle_t smbsh;
device_t smbus;
};
#define AMDSMB_ECINB(amdsmb, register) \
(bus_space_read_1(amdsmb->smbst, amdsmb->smbsh, register))
#define AMDSMB_ECOUTB(amdsmb, register, value) \
(bus_space_write_1(amdsmb->smbst, amdsmb->smbsh, register, value))
static int
amdsmb_probe(device_t dev)
{
u_int16_t vid;
u_int16_t did;
vid = pci_get_vendor(dev);
did = pci_get_device(dev);
if (vid == AMDSMB_VENDORID_AMD) {
switch(did) {
case AMDSMB_DEVICEID_AMD8111_SMB2:
device_set_desc(dev, "AMD-8111 SMBus 2.0 Controller");
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
amdsmb_attach(device_t dev)
{
struct amdsmb_softc *amdsmb_sc = device_get_softc(dev);
/* Allocate I/O space */
amdsmb_sc->rid = PCIR_BAR(0);
amdsmb_sc->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&amdsmb_sc->rid, RF_ACTIVE);
if (amdsmb_sc->res == NULL) {
device_printf(dev, "could not map i/o space\n");
return (ENXIO);
}
amdsmb_sc->smbst = rman_get_bustag(amdsmb_sc->res);
amdsmb_sc->smbsh = rman_get_bushandle(amdsmb_sc->res);
/* Allocate a new smbus device */
amdsmb_sc->smbus = device_add_child(dev, "smbus", -1);
if (!amdsmb_sc->smbus)
return (EINVAL);
bus_generic_attach(dev);
return (0);
}
static int
amdsmb_detach(device_t dev)
{
struct amdsmb_softc *amdsmb_sc = device_get_softc(dev);
if (amdsmb_sc->smbus) {
device_delete_child(dev, amdsmb_sc->smbus);
amdsmb_sc->smbus = NULL;
}
if (amdsmb_sc->res)
bus_release_resource(dev, SYS_RES_IOPORT, amdsmb_sc->rid,
amdsmb_sc->res);
return (0);
}
static int
amdsmb_callback(device_t dev, int index, caddr_t *data)
{
int error = 0;
switch (index) {
case SMB_REQUEST_BUS:
case SMB_RELEASE_BUS:
break;
default:
error = EINVAL;
}
return (error);
}
static int
amdsmb_ec_wait_write(struct amdsmb_softc *sc)
{
int timeout = 500;
while (timeout-- && AMDSMB_ECINB(sc, EC_SC) & EC_SC_IBF)
DELAY(1);
if (timeout == 0) {
device_printf(sc->smbus, "timeout waiting for IBF to clear\n");
return (1);
}
return (0);
}
static int
amdsmb_ec_wait_read(struct amdsmb_softc *sc)
{
int timeout = 500;
while (timeout-- && ~AMDSMB_ECINB(sc, EC_SC) & EC_SC_OBF)
DELAY(1);
if (timeout == 0) {
device_printf(sc->smbus, "timeout waiting for OBF to set\n");
return (1);
}
return (0);
}
static int
amdsmb_ec_read(struct amdsmb_softc *sc, u_char addr, u_char *data)
{
if (amdsmb_ec_wait_write(sc))
return (1);
AMDSMB_ECOUTB(sc, EC_CMD, EC_CMD_RD);
if (amdsmb_ec_wait_write(sc))
return (1);
AMDSMB_ECOUTB(sc, EC_DATA, addr);
if (amdsmb_ec_wait_read(sc))
return (1);
*data = AMDSMB_ECINB(sc, EC_DATA);
return (0);
}
static int
amdsmb_ec_write(struct amdsmb_softc *sc, u_char addr, u_char data)
{
if (amdsmb_ec_wait_write(sc))
return (1);
AMDSMB_ECOUTB(sc, EC_CMD, EC_CMD_WR);
if (amdsmb_ec_wait_write(sc))
return (1);
AMDSMB_ECOUTB(sc, EC_DATA, addr);
if (amdsmb_ec_wait_write(sc))
return (1);
AMDSMB_ECOUTB(sc, EC_DATA, data);
return (0);
}
static int
amdsmb_wait(struct amdsmb_softc *sc)
{
u_char sts, temp;
int error, count;
amdsmb_ec_read(sc, SMB_PRTCL, &temp);
if (temp != 0)
{
count = 10000;
do {
DELAY(500);
amdsmb_ec_read(sc, SMB_PRTCL, &temp);
} while (temp != 0 && count--);
if (count == 0)
return (SMB_ETIMEOUT);
}
amdsmb_ec_read(sc, SMB_STS, &sts);
sts &= SMB_STS_STATUS;
AMDSMB_DEBUG(printf("amdsmb: STS=0x%x\n", sts));
switch (sts) {
case SMB_STS_OK:
error = SMB_ENOERR;
break;
case SMB_STS_DANA:
error = SMB_ENOACK;
break;
case SMB_STS_B:
error = SMB_EBUSY;
break;
case SMB_STS_T:
error = SMB_ETIMEOUT;
break;
case SMB_STS_DCAD:
case SMB_STS_DAD:
case SMB_STS_HUP:
error = SMB_ENOTSUPP;
break;
default:
error = SMB_EBUSERR;
break;
}
return (error);
}
static int
amdsmb_quick(device_t dev, u_char slave, int how)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
u_char protocol;
int error;
protocol = SMB_PRTCL_QUICK;
switch (how) {
case SMB_QWRITE:
protocol |= SMB_PRTCL_WRITE;
AMDSMB_DEBUG(printf("amdsmb: QWRITE to 0x%x", slave));
break;
case SMB_QREAD:
protocol |= SMB_PRTCL_READ;
AMDSMB_DEBUG(printf("amdsmb: QREAD to 0x%x", slave));
break;
default:
panic("%s: unknown QUICK command (%x)!", __func__, how);
}
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, protocol);
error = amdsmb_wait(sc);
AMDSMB_DEBUG(printf(", error=0x%x\n", error));
return (error);
}
static int
amdsmb_sendb(device_t dev, u_char slave, char byte)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
int error;
amdsmb_ec_write(sc, SMB_CMD, byte);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE);
error = amdsmb_wait(sc);
AMDSMB_DEBUG(printf("amdsmb: SENDB to 0x%x, byte=0x%x, error=0x%x\n",
slave, byte, error));
return (error);
}
static int
amdsmb_recvb(device_t dev, u_char slave, char *byte)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
int error;
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE);
if ((error = amdsmb_wait(sc)) == SMB_ENOERR)
amdsmb_ec_read(sc, SMB_DATA, byte);
AMDSMB_DEBUG(printf("amdsmb: RECVB from 0x%x, byte=0x%x, error=0x%x\n",
slave, *byte, error));
return (error);
}
static int
amdsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
int error;
amdsmb_ec_write(sc, SMB_CMD, cmd);
amdsmb_ec_write(sc, SMB_DATA, byte);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE_DATA);
error = amdsmb_wait(sc);
AMDSMB_DEBUG(printf("amdsmb: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, "
"error=0x%x\n", slave, cmd, byte, error));
return (error);
}
static int
amdsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
int error;
amdsmb_ec_write(sc, SMB_CMD, cmd);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE_DATA);
if ((error = amdsmb_wait(sc)) == SMB_ENOERR)
amdsmb_ec_read(sc, SMB_DATA, byte);
AMDSMB_DEBUG(printf("amdsmb: READB from 0x%x, cmd=0x%x, byte=0x%x, "
"error=0x%x\n", slave, cmd, (unsigned char)*byte, error));
return (error);
}
static int
amdsmb_writew(device_t dev, u_char slave, char cmd, short word)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
int error;
amdsmb_ec_write(sc, SMB_CMD, cmd);
amdsmb_ec_write(sc, SMB_DATA, word);
amdsmb_ec_write(sc, SMB_DATA + 1, word >> 8);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_WORD_DATA);
error = amdsmb_wait(sc);
AMDSMB_DEBUG(printf("amdsmb: WRITEW to 0x%x, cmd=0x%x, word=0x%x, "
"error=0x%x\n", slave, cmd, word, error));
return (error);
}
static int
amdsmb_readw(device_t dev, u_char slave, char cmd, short *word)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
u_char temp[2];
int error;
amdsmb_ec_write(sc, SMB_CMD, cmd);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_WORD_DATA);
if ((error = amdsmb_wait(sc)) == SMB_ENOERR) {
amdsmb_ec_read(sc, SMB_DATA + 0, &temp[0]);
amdsmb_ec_read(sc, SMB_DATA + 1, &temp[1]);
*word = temp[0] | (temp[1] << 8);
}
AMDSMB_DEBUG(printf("amdsmb: READW from 0x%x, cmd=0x%x, word=0x%x, "
"error=0x%x\n", slave, cmd, (unsigned short)*word, error));
return (error);
}
static int
amdsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
u_char len, i;
int error;
len = min(count, 32);
amdsmb_ec_write(sc, SMB_CMD, cmd);
amdsmb_ec_write(sc, SMB_BCNT, len);
for (i = 0; i < len; i++)
amdsmb_ec_write(sc, SMB_DATA + i, buf[i]);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BLOCK_DATA);
error = amdsmb_wait(sc);
AMDSMB_DEBUG(printf("amdsmb: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, "
"error=0x%x", slave, count, cmd, error));
return (error);
}
static int
amdsmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct amdsmb_softc *sc = (struct amdsmb_softc *)device_get_softc(dev);
u_char len, i;
int error;
amdsmb_ec_write(sc, SMB_CMD, cmd);
amdsmb_ec_write(sc, SMB_ADDR, slave);
amdsmb_ec_write(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BLOCK_DATA);
if ((error = amdsmb_wait(sc)) == SMB_ENOERR) {
amdsmb_ec_read(sc, SMB_BCNT, &len);
len = min(len, 32);
for (i = 0; i < len; i++)
amdsmb_ec_read(sc, SMB_DATA + i, buf + i);
}
AMDSMB_DEBUG(printf("amdsmb: READBLK to 0x%x, count=0x%x, cmd=0x%x, "
"error=0x%x", slave, count, cmd, error));
return (error);
}
static device_method_t amdsmb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, amdsmb_probe),
DEVMETHOD(device_attach, amdsmb_attach),
DEVMETHOD(device_detach, amdsmb_detach),
/* SMBus interface */
DEVMETHOD(smbus_callback, amdsmb_callback),
DEVMETHOD(smbus_quick, amdsmb_quick),
DEVMETHOD(smbus_sendb, amdsmb_sendb),
DEVMETHOD(smbus_recvb, amdsmb_recvb),
DEVMETHOD(smbus_writeb, amdsmb_writeb),
DEVMETHOD(smbus_readb, amdsmb_readb),
DEVMETHOD(smbus_writew, amdsmb_writew),
DEVMETHOD(smbus_readw, amdsmb_readw),
DEVMETHOD(smbus_bwrite, amdsmb_bwrite),
DEVMETHOD(smbus_bread, amdsmb_bread),
{ 0, 0 }
};
static devclass_t amdsmb_devclass;
static driver_t amdsmb_driver = {
"amdsmb",
amdsmb_methods,
sizeof(struct amdsmb_softc),
};
DRIVER_MODULE(amdsmb, pci, amdsmb_driver, amdsmb_devclass, 0, 0);
MODULE_DEPEND(amdsmb, pci, 1, 1, 1);
MODULE_DEPEND(amdsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
MODULE_VERSION(amdsmb, 1);

553
sys/pci/nfsmb.c Normal file
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@ -0,0 +1,553 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/uio.h>
#include <machine/bus.h>
#include <machine/clock.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/iicbus/iiconf.h>
#include <dev/smbus/smbconf.h>
#include "smbus_if.h"
#define NFSMB_DEBUG(x) if (nfsmb_debug) (x)
#ifdef DEBUG
static int nfsmb_debug = 1;
#else
static int nfsmb_debug = 0;
#endif
/* NVIDIA nForce2/3/4 MCP */
#define NFSMB_VENDORID_NVIDIA 0x10de
#define NFSMB_DEVICEID_NF2_SMB 0x0064
#define NFSMB_DEVICEID_NF2_ULTRA_SMB 0x0084
#define NFSMB_DEVICEID_NF3_PRO150_SMB 0x00d4
#define NFSMB_DEVICEID_NF3_250GB_SMB 0x00e4
#define NFSMB_DEVICEID_NF4_SMB 0x0052
/* PCI Configuration space registers */
#define NF2PCI_SMBASE_1 PCIR_BAR(4)
#define NF2PCI_SMBASE_2 PCIR_BAR(5)
/*
* ACPI 3.0, Chapter 12, SMBus Host Controller Interface.
*/
#define SMB_PRTCL 0x00 /* protocol */
#define SMB_STS 0x01 /* status */
#define SMB_ADDR 0x02 /* address */
#define SMB_CMD 0x03 /* command */
#define SMB_DATA 0x04 /* 32 data registers */
#define SMB_BCNT 0x24 /* number of data bytes */
#define SMB_ALRM_A 0x25 /* alarm address */
#define SMB_ALRM_D 0x26 /* 2 bytes alarm data */
#define SMB_STS_DONE 0x80
#define SMB_STS_ALRM 0x40
#define SMB_STS_RES 0x20
#define SMB_STS_STATUS 0x1f
#define SMB_STS_OK 0x00 /* OK */
#define SMB_STS_UF 0x07 /* Unknown Failure */
#define SMB_STS_DANA 0x10 /* Device Address Not Acknowledged */
#define SMB_STS_DED 0x11 /* Device Error Detected */
#define SMB_STS_DCAD 0x12 /* Device Command Access Denied */
#define SMB_STS_UE 0x13 /* Unknown Error */
#define SMB_STS_DAD 0x17 /* Device Access Denied */
#define SMB_STS_T 0x18 /* Timeout */
#define SMB_STS_HUP 0x19 /* Host Unsupported Protocol */
#define SMB_STS_B 0x1A /* Busy */
#define SMB_STS_PEC 0x1F /* PEC (CRC-8) Error */
#define SMB_PRTCL_WRITE 0x00
#define SMB_PRTCL_READ 0x01
#define SMB_PRTCL_QUICK 0x02
#define SMB_PRTCL_BYTE 0x04
#define SMB_PRTCL_BYTE_DATA 0x06
#define SMB_PRTCL_WORD_DATA 0x08
#define SMB_PRTCL_BLOCK_DATA 0x0a
#define SMB_PRTCL_PROC_CALL 0x0c
#define SMB_PRTCL_BLOCK_PROC_CALL 0x0d
#define SMB_PRTCL_PEC 0x80
struct nfsmb_softc {
int rid;
struct resource *res;
bus_space_tag_t smbst;
bus_space_handle_t smbsh;
device_t smbus;
device_t subdev;
};
#define NFSMB_SMBINB(nfsmb, register) \
(bus_space_read_1(nfsmb->smbst, nfsmb->smbsh, register))
#define NFSMB_SMBOUTB(nfsmb, register, value) \
(bus_space_write_1(nfsmb->smbst, nfsmb->smbsh, register, value))
static int
nfsmbsub_probe(device_t dev)
{
device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
return (BUS_PROBE_DEFAULT);
}
static int
nfsmb_probe(device_t dev)
{
u_int16_t vid;
u_int16_t did;
vid = pci_get_vendor(dev);
did = pci_get_device(dev);
if (vid == NFSMB_VENDORID_NVIDIA) {
switch(did) {
case NFSMB_DEVICEID_NF2_SMB:
case NFSMB_DEVICEID_NF2_ULTRA_SMB:
case NFSMB_DEVICEID_NF3_PRO150_SMB:
case NFSMB_DEVICEID_NF3_250GB_SMB:
case NFSMB_DEVICEID_NF4_SMB:
device_set_desc(dev, "nForce2/3/4 MCP SMBus Controller");
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
nfsmbsub_attach(device_t dev)
{
device_t parent;
struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
parent = device_get_parent(dev);
nfsmbsub_sc->rid = NF2PCI_SMBASE_2;
nfsmbsub_sc->res = bus_alloc_resource_any(parent, SYS_RES_IOPORT,
&nfsmbsub_sc->rid, RF_ACTIVE);
if (nfsmbsub_sc->res == NULL) {
device_printf(dev, "could not map i/o space\n");
return (ENXIO);
}
nfsmbsub_sc->smbst = rman_get_bustag(nfsmbsub_sc->res);
nfsmbsub_sc->smbsh = rman_get_bushandle(nfsmbsub_sc->res);
nfsmbsub_sc->smbus = device_add_child(dev, "smbus", -1);
if (nfsmbsub_sc->smbus == NULL)
return (EINVAL);
bus_generic_attach(dev);
return (0);
}
static int
nfsmb_attach(device_t dev)
{
struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
/* Allocate I/O space */
nfsmb_sc->rid = NF2PCI_SMBASE_1;
nfsmb_sc->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&nfsmb_sc->rid, RF_ACTIVE);
if (nfsmb_sc->res == NULL) {
device_printf(dev, "could not map i/o space\n");
return (ENXIO);
}
nfsmb_sc->smbst = rman_get_bustag(nfsmb_sc->res);
nfsmb_sc->smbsh = rman_get_bushandle(nfsmb_sc->res);
/* Allocate a new smbus device */
nfsmb_sc->smbus = device_add_child(dev, "smbus", -1);
if (!nfsmb_sc->smbus)
return (EINVAL);
nfsmb_sc->subdev = NULL;
switch (pci_get_device(dev)) {
case NFSMB_DEVICEID_NF2_SMB:
case NFSMB_DEVICEID_NF2_ULTRA_SMB:
case NFSMB_DEVICEID_NF3_PRO150_SMB:
case NFSMB_DEVICEID_NF3_250GB_SMB:
case NFSMB_DEVICEID_NF4_SMB:
/* Trying to add secondary device as slave */
nfsmb_sc->subdev = device_add_child(dev, "nfsmb", -1);
if (!nfsmb_sc->subdev)
return (EINVAL);
break;
default:
break;
}
bus_generic_attach(dev);
return (0);
}
static int
nfsmbsub_detach(device_t dev)
{
device_t parent;
struct nfsmb_softc *nfsmbsub_sc = device_get_softc(dev);
parent = device_get_parent(dev);
if (nfsmbsub_sc->smbus) {
device_delete_child(dev, nfsmbsub_sc->smbus);
nfsmbsub_sc->smbus = NULL;
}
if (nfsmbsub_sc->res) {
bus_release_resource(parent, SYS_RES_IOPORT, nfsmbsub_sc->rid,
nfsmbsub_sc->res);
nfsmbsub_sc->res = NULL;
}
return (0);
}
static int
nfsmb_detach(device_t dev)
{
struct nfsmb_softc *nfsmb_sc = device_get_softc(dev);
if (nfsmb_sc->subdev) {
device_delete_child(dev, nfsmb_sc->subdev);
nfsmb_sc->subdev = NULL;
}
if (nfsmb_sc->smbus) {
device_delete_child(dev, nfsmb_sc->smbus);
nfsmb_sc->smbus = NULL;
}
if (nfsmb_sc->res) {
bus_release_resource(dev, SYS_RES_IOPORT, nfsmb_sc->rid,
nfsmb_sc->res);
nfsmb_sc->res = NULL;
}
return (0);
}
static int
nfsmb_callback(device_t dev, int index, caddr_t *data)
{
int error = 0;
switch (index) {
case SMB_REQUEST_BUS:
case SMB_RELEASE_BUS:
break;
default:
error = EINVAL;
}
return (error);
}
static int
nfsmb_wait(struct nfsmb_softc *sc)
{
u_char sts;
int error, count;
if (NFSMB_SMBINB(sc, SMB_PRTCL) != 0)
{
count = 10000;
do {
DELAY(500);
} while (NFSMB_SMBINB(sc, SMB_PRTCL) != 0 && count--);
if (count == 0)
return (SMB_ETIMEOUT);
}
sts = NFSMB_SMBINB(sc, SMB_STS) & SMB_STS_STATUS;
NFSMB_DEBUG(printf("nfsmb: STS=0x%x\n", sts));
switch (sts) {
case SMB_STS_OK:
error = SMB_ENOERR;
break;
case SMB_STS_DANA:
error = SMB_ENOACK;
break;
case SMB_STS_B:
error = SMB_EBUSY;
break;
case SMB_STS_T:
error = SMB_ETIMEOUT;
break;
case SMB_STS_DCAD:
case SMB_STS_DAD:
case SMB_STS_HUP:
error = SMB_ENOTSUPP;
break;
default:
error = SMB_EBUSERR;
break;
}
return (error);
}
static int
nfsmb_quick(device_t dev, u_char slave, int how)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
u_char protocol;
int error;
protocol = SMB_PRTCL_QUICK;
switch (how) {
case SMB_QWRITE:
protocol |= SMB_PRTCL_WRITE;
NFSMB_DEBUG(printf("nfsmb: QWRITE to 0x%x", slave));
break;
case SMB_QREAD:
protocol |= SMB_PRTCL_READ;
NFSMB_DEBUG(printf("nfsmb: QREAD to 0x%x", slave));
break;
default:
panic("%s: unknown QUICK command (%x)!", __func__, how);
}
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, protocol);
error = nfsmb_wait(sc);
NFSMB_DEBUG(printf(", error=0x%x\n", error));
return (error);
}
static int
nfsmb_sendb(device_t dev, u_char slave, char byte)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
int error;
NFSMB_SMBOUTB(sc, SMB_CMD, byte);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE);
error = nfsmb_wait(sc);
NFSMB_DEBUG(printf("nfsmb: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
return (error);
}
static int
nfsmb_recvb(device_t dev, u_char slave, char *byte)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
int error;
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE);
if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
*byte = NFSMB_SMBINB(sc, SMB_DATA);
NFSMB_DEBUG(printf("nfsmb: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
return (error);
}
static int
nfsmb_writeb(device_t dev, u_char slave, char cmd, char byte)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
int error;
NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
NFSMB_SMBOUTB(sc, SMB_DATA, byte);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BYTE_DATA);
error = nfsmb_wait(sc);
NFSMB_DEBUG(printf("nfsmb: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
return (error);
}
static int
nfsmb_readb(device_t dev, u_char slave, char cmd, char *byte)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
int error;
NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BYTE_DATA);
if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
*byte = NFSMB_SMBINB(sc, SMB_DATA);
NFSMB_DEBUG(printf("nfsmb: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, (unsigned char)*byte, error));
return (error);
}
static int
nfsmb_writew(device_t dev, u_char slave, char cmd, short word)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
int error;
NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
NFSMB_SMBOUTB(sc, SMB_DATA, word);
NFSMB_SMBOUTB(sc, SMB_DATA + 1, word >> 8);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_WORD_DATA);
error = nfsmb_wait(sc);
NFSMB_DEBUG(printf("nfsmb: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
return (error);
}
static int
nfsmb_readw(device_t dev, u_char slave, char cmd, short *word)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
int error;
NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_WORD_DATA);
if ((error = nfsmb_wait(sc)) == SMB_ENOERR)
*word = NFSMB_SMBINB(sc, SMB_DATA) |
(NFSMB_SMBINB(sc, SMB_DATA + 1) << 8);
NFSMB_DEBUG(printf("nfsmb: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, (unsigned short)*word, error));
return (error);
}
static int
nfsmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
u_char len, i;
int error;
len = min(count, 32);
NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
NFSMB_SMBOUTB(sc, SMB_BCNT, len);
for (i = 0; i < len; i++)
NFSMB_SMBOUTB(sc, SMB_DATA + i, buf[i]);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_WRITE | SMB_PRTCL_BLOCK_DATA);
error = nfsmb_wait(sc);
NFSMB_DEBUG(printf("nfsmb: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
return (error);
}
static int
nfsmb_bread(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct nfsmb_softc *sc = (struct nfsmb_softc *)device_get_softc(dev);
u_char len, i;
int error;
NFSMB_SMBOUTB(sc, SMB_CMD, cmd);
NFSMB_SMBOUTB(sc, SMB_ADDR, slave);
NFSMB_SMBOUTB(sc, SMB_PRTCL, SMB_PRTCL_READ | SMB_PRTCL_BLOCK_DATA);
if ((error = nfsmb_wait(sc)) == SMB_ENOERR) {
len = NFSMB_SMBINB(sc, SMB_BCNT);
len = min(len, 32);
for (i = 0; i < len; i++)
buf[i] = NFSMB_SMBINB(sc, SMB_DATA + i);
}
NFSMB_DEBUG(printf("nfsmb: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
return (error);
}
static device_method_t nfsmb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, nfsmb_probe),
DEVMETHOD(device_attach, nfsmb_attach),
DEVMETHOD(device_detach, nfsmb_detach),
/* SMBus interface */
DEVMETHOD(smbus_callback, nfsmb_callback),
DEVMETHOD(smbus_quick, nfsmb_quick),
DEVMETHOD(smbus_sendb, nfsmb_sendb),
DEVMETHOD(smbus_recvb, nfsmb_recvb),
DEVMETHOD(smbus_writeb, nfsmb_writeb),
DEVMETHOD(smbus_readb, nfsmb_readb),
DEVMETHOD(smbus_writew, nfsmb_writew),
DEVMETHOD(smbus_readw, nfsmb_readw),
DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
DEVMETHOD(smbus_bread, nfsmb_bread),
{ 0, 0 }
};
static device_method_t nfsmbsub_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, nfsmbsub_probe),
DEVMETHOD(device_attach, nfsmbsub_attach),
DEVMETHOD(device_detach, nfsmbsub_detach),
/* SMBus interface */
DEVMETHOD(smbus_callback, nfsmb_callback),
DEVMETHOD(smbus_quick, nfsmb_quick),
DEVMETHOD(smbus_sendb, nfsmb_sendb),
DEVMETHOD(smbus_recvb, nfsmb_recvb),
DEVMETHOD(smbus_writeb, nfsmb_writeb),
DEVMETHOD(smbus_readb, nfsmb_readb),
DEVMETHOD(smbus_writew, nfsmb_writew),
DEVMETHOD(smbus_readw, nfsmb_readw),
DEVMETHOD(smbus_bwrite, nfsmb_bwrite),
DEVMETHOD(smbus_bread, nfsmb_bread),
{ 0, 0 }
};
static devclass_t nfsmb_devclass;
static driver_t nfsmb_driver = {
"nfsmb",
nfsmb_methods,
sizeof(struct nfsmb_softc),
};
static driver_t nfsmbsub_driver = {
"nfsmb",
nfsmbsub_methods,
sizeof(struct nfsmb_softc),
};
DRIVER_MODULE(nfsmb, pci, nfsmb_driver, nfsmb_devclass, 0, 0);
DRIVER_MODULE(nfsmb, nfsmb, nfsmbsub_driver, nfsmb_devclass, 0, 0);
MODULE_DEPEND(nfsmb, pci, 1, 1, 1);
MODULE_DEPEND(nfsmb, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
MODULE_VERSION(nfsmb, 1);