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freebsd-dev/sys/pci/viapm.c
John Baldwin 13e3657b7b Add locking to the various iicbus(4) bridge drivers: 
- Just grab Giant in the ixp425_iic(4) driver since this driver uses
  a shared address/data register window pair to access the actual
  I2C registers.  None of the other ixp425 drivers lock access to these
  shared address/data registers yet and that would need to be done before
  this could use any meaningful locking.
- Add locking to the interrupt handler and 'iicbus_reset' methods of the
  at91_twi(4) driver.
- Add locking to the pcf(4) driver.  Other pcf(4) fixes include:
  - Don't needlessly zero the softc.
  - Use bus_foo rather than bus_space_foo and remove bus space tag and
    handle from softc.
- The lpbb(4) driver just grabs Giant for now.  This will be refined later
  when ppbus(4) is locked.
- As was done with smbus earlier, move the DRIVER_MODULE() lines to match
  the bus driver (either iicbus or iicbb) to the bridge driver into the
  bridge drivers.

Tested by:	sam (arm/ixp425)
2008-08-04 20:46:15 +00:00

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/*-
* Copyright (c) 2001 Alcove - 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_isa.h"
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#ifdef DEV_ISA
#include <isa/isavar.h>
#include <isa/isa_common.h>
#endif
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/iicbus/iiconf.h>
#include <dev/smbus/smbconf.h>
#include "iicbb_if.h"
#include "smbus_if.h"
#define VIAPM_DEBUG(x) if (viapm_debug) (x)
#ifdef DEBUG
static int viapm_debug = 1;
#else
static int viapm_debug = 0;
#endif
#define VIA_586B_PMU_ID 0x30401106
#define VIA_596A_PMU_ID 0x30501106
#define VIA_596B_PMU_ID 0x30511106
#define VIA_686A_PMU_ID 0x30571106
#define VIA_8233_PMU_ID 0x30741106
#define VIA_8233A_PMU_ID 0x31471106
#define VIA_8235_PMU_ID 0x31771106
#define VIA_8237_PMU_ID 0x32271106
#define VIA_CX700_PMU_ID 0x83241106
#define VIAPM_INB(port) \
((u_char)bus_read_1(viapm->iores, port))
#define VIAPM_OUTB(port,val) \
(bus_write_1(viapm->iores, port, (u_char)(val)))
#define VIAPM_TYP_UNKNOWN 0
#define VIAPM_TYP_586B_3040E 1
#define VIAPM_TYP_586B_3040F 2
#define VIAPM_TYP_596B 3
#define VIAPM_TYP_686A 4
#define VIAPM_TYP_8233 5
#define VIAPM_LOCK(sc) mtx_lock(&(sc)->lock)
#define VIAPM_UNLOCK(sc) mtx_unlock(&(sc)->lock)
#define VIAPM_LOCK_ASSERT(sc) mtx_assert(&(sc)->lock, MA_OWNED)
struct viapm_softc {
int type;
u_int32_t base;
int iorid;
int irqrid;
struct resource *iores;
struct resource *irqres;
void *irqih;
device_t iicbb;
device_t smbus;
struct mtx lock;
};
static devclass_t viapm_devclass;
static devclass_t viapropm_devclass;
/*
* VT82C586B definitions
*/
#define VIAPM_586B_REVID 0x08
#define VIAPM_586B_3040E_BASE 0x20
#define VIAPM_586B_3040E_ACTIV 0x4 /* 16 bits */
#define VIAPM_586B_3040F_BASE 0x48
#define VIAPM_586B_3040F_ACTIV 0x41 /* 8 bits */
#define VIAPM_586B_OEM_REV_E 0x00
#define VIAPM_586B_OEM_REV_F 0x01
#define VIAPM_586B_PROD_REV_A 0x10
#define VIAPM_586B_BA_MASK 0x0000ff00
#define GPIO_DIR 0x40
#define GPIO_VAL 0x42
#define EXTSMI_VAL 0x44
#define VIAPM_SCL 0x02 /* GPIO1_VAL */
#define VIAPM_SDA 0x04 /* GPIO2_VAL */
/*
* VIAPRO common definitions
*/
#define VIAPM_PRO_BA_MASK 0x0000fff0
#define VIAPM_PRO_SMBCTRL 0xd2
#define VIAPM_PRO_REVID 0xd6
/*
* VT82C686A definitions
*/
#define VIAPM_PRO_BASE 0x90
#define SMBHST 0x0
#define SMBHSL 0x1
#define SMBHCTRL 0x2
#define SMBHCMD 0x3
#define SMBHADDR 0x4
#define SMBHDATA0 0x5
#define SMBHDATA1 0x6
#define SMBHBLOCK 0x7
#define SMBSST 0x1
#define SMBSCTRL 0x8
#define SMBSSDWCMD 0x9
#define SMBSEVENT 0xa
#define SMBSDATA 0xc
#define SMBHST_RESERVED 0xef /* reserved bits */
#define SMBHST_FAILED 0x10 /* failed bus transaction */
#define SMBHST_COLLID 0x08 /* bus collision */
#define SMBHST_ERROR 0x04 /* device error */
#define SMBHST_INTR 0x02 /* command completed */
#define SMBHST_BUSY 0x01 /* host busy */
#define SMBHCTRL_START 0x40 /* start command */
#define SMBHCTRL_PROTO 0x1c /* command protocol mask */
#define SMBHCTRL_QUICK 0x00
#define SMBHCTRL_SENDRECV 0x04
#define SMBHCTRL_BYTE 0x08
#define SMBHCTRL_WORD 0x0c
#define SMBHCTRL_BLOCK 0x14
#define SMBHCTRL_KILL 0x02 /* stop the current transaction */
#define SMBHCTRL_ENABLE 0x01 /* enable interrupts */
#define SMBSCTRL_ENABLE 0x01 /* enable slave */
/*
* VIA8233 definitions
*/
#define VIAPM_8233_BASE 0xD0
static int
viapm_586b_probe(device_t dev)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
u_int32_t l;
u_int16_t s;
u_int8_t c;
switch (pci_get_devid(dev)) {
case VIA_586B_PMU_ID:
bzero(viapm, sizeof(struct viapm_softc));
l = pci_read_config(dev, VIAPM_586B_REVID, 1);
switch (l) {
case VIAPM_586B_OEM_REV_E:
viapm->type = VIAPM_TYP_586B_3040E;
viapm->iorid = VIAPM_586B_3040E_BASE;
/* Activate IO block access */
s = pci_read_config(dev, VIAPM_586B_3040E_ACTIV, 2);
pci_write_config(dev, VIAPM_586B_3040E_ACTIV, s | 0x1, 2);
break;
case VIAPM_586B_OEM_REV_F:
case VIAPM_586B_PROD_REV_A:
default:
viapm->type = VIAPM_TYP_586B_3040F;
viapm->iorid = VIAPM_586B_3040F_BASE;
/* Activate IO block access */
c = pci_read_config(dev, VIAPM_586B_3040F_ACTIV, 1);
pci_write_config(dev, VIAPM_586B_3040F_ACTIV, c | 0x80, 1);
break;
}
viapm->base = pci_read_config(dev, viapm->iorid, 4) &
VIAPM_586B_BA_MASK;
/*
* We have to set the I/O resources by hand because it is
* described outside the viapmope of the traditional maps
*/
if (bus_set_resource(dev, SYS_RES_IOPORT, viapm->iorid,
viapm->base, 256)) {
device_printf(dev, "could not set bus resource\n");
return ENXIO;
}
device_set_desc(dev, "VIA VT82C586B Power Management Unit");
return (BUS_PROBE_DEFAULT);
default:
break;
}
return ENXIO;
}
static int
viapm_pro_probe(device_t dev)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
#ifdef VIAPM_BASE_ADDR
u_int32_t l;
#endif
u_int32_t base_cfgreg;
char *desc;
switch (pci_get_devid(dev)) {
case VIA_596A_PMU_ID:
desc = "VIA VT82C596A Power Management Unit";
viapm->type = VIAPM_TYP_596B;
base_cfgreg = VIAPM_PRO_BASE;
goto viapro;
case VIA_596B_PMU_ID:
desc = "VIA VT82C596B Power Management Unit";
viapm->type = VIAPM_TYP_596B;
base_cfgreg = VIAPM_PRO_BASE;
goto viapro;
case VIA_686A_PMU_ID:
desc = "VIA VT82C686A Power Management Unit";
viapm->type = VIAPM_TYP_686A;
base_cfgreg = VIAPM_PRO_BASE;
goto viapro;
case VIA_8233_PMU_ID:
case VIA_8233A_PMU_ID:
desc = "VIA VT8233 Power Management Unit";
viapm->type = VIAPM_TYP_UNKNOWN;
base_cfgreg = VIAPM_8233_BASE;
goto viapro;
case VIA_8235_PMU_ID:
desc = "VIA VT8235 Power Management Unit";
viapm->type = VIAPM_TYP_UNKNOWN;
base_cfgreg = VIAPM_8233_BASE;
goto viapro;
case VIA_8237_PMU_ID:
desc = "VIA VT8237 Power Management Unit";
viapm->type = VIAPM_TYP_UNKNOWN;
base_cfgreg = VIAPM_8233_BASE;
goto viapro;
case VIA_CX700_PMU_ID:
desc = "VIA CX700 Power Management Unit";
viapm->type = VIAPM_TYP_UNKNOWN;
base_cfgreg = VIAPM_8233_BASE;
goto viapro;
viapro:
#ifdef VIAPM_BASE_ADDR
/* force VIAPM I/O base address */
/* enable the SMBus controller function */
l = pci_read_config(dev, VIAPM_PRO_SMBCTRL, 1);
pci_write_config(dev, VIAPM_PRO_SMBCTRL, l | 1, 1);
/* write the base address */
pci_write_config(dev, base_cfgreg,
VIAPM_BASE_ADDR & VIAPM_PRO_BA_MASK, 4);
#endif
viapm->base = pci_read_config(dev, base_cfgreg, 4) & VIAPM_PRO_BA_MASK;
/*
* We have to set the I/O resources by hand because it is
* described outside the viapmope of the traditional maps
*/
viapm->iorid = base_cfgreg;
if (bus_set_resource(dev, SYS_RES_IOPORT, viapm->iorid,
viapm->base, 16)) {
device_printf(dev, "could not set bus resource 0x%x\n",
viapm->base);
return ENXIO;
}
if (bootverbose) {
device_printf(dev, "SMBus I/O base at 0x%x\n", viapm->base);
}
device_set_desc(dev, desc);
return (BUS_PROBE_DEFAULT);
default:
break;
}
return ENXIO;
}
static int
viapm_pro_attach(device_t dev)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
u_int32_t l;
mtx_init(&viapm->lock, device_get_nameunit(dev), "viapm", MTX_DEF);
if (!(viapm->iores = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&viapm->iorid, RF_ACTIVE))) {
device_printf(dev, "could not allocate bus space\n");
goto error;
}
#ifdef notyet
/* force irq 9 */
l = pci_read_config(dev, VIAPM_PRO_SMBCTRL, 1);
pci_write_config(dev, VIAPM_PRO_SMBCTRL, l | 0x80, 1);
viapm->irqrid = 0;
if (!(viapm->irqres = bus_alloc_resource(dev, SYS_RES_IRQ,
&viapm->irqrid, 9, 9, 1,
RF_SHAREABLE | RF_ACTIVE))) {
device_printf(dev, "could not allocate irq\n");
goto error;
}
if (bus_setup_intr(dev, viapm->irqres, INTR_TYPE_MISC | INTR_MPSAFE,
(driver_intr_t *) viasmb_intr, viapm, &viapm->irqih)) {
device_printf(dev, "could not setup irq\n");
goto error;
}
#endif
if (bootverbose) {
l = pci_read_config(dev, VIAPM_PRO_REVID, 1);
device_printf(dev, "SMBus revision code 0x%x\n", l);
}
viapm->smbus = device_add_child(dev, "smbus", -1);
/* probe and attach the smbus */
bus_generic_attach(dev);
/* disable slave function */
VIAPM_OUTB(SMBSCTRL, VIAPM_INB(SMBSCTRL) & ~SMBSCTRL_ENABLE);
/* enable the SMBus controller function */
l = pci_read_config(dev, VIAPM_PRO_SMBCTRL, 1);
pci_write_config(dev, VIAPM_PRO_SMBCTRL, l | 1, 1);
#ifdef notyet
/* enable interrupts */
VIAPM_OUTB(SMBHCTRL, VIAPM_INB(SMBHCTRL) | SMBHCTRL_ENABLE);
#endif
#ifdef DEV_ISA
/* If this device is a PCI-ISA bridge, then attach an ISA bus. */
if ((pci_get_class(dev) == PCIC_BRIDGE) &&
(pci_get_subclass(dev) == PCIS_BRIDGE_ISA))
isab_attach(dev);
#endif
return 0;
error:
if (viapm->iores)
bus_release_resource(dev, SYS_RES_IOPORT, viapm->iorid, viapm->iores);
#ifdef notyet
if (viapm->irqres)
bus_release_resource(dev, SYS_RES_IRQ, viapm->irqrid, viapm->irqres);
#endif
mtx_destroy(&viapm->lock);
return ENXIO;
}
static int
viapm_586b_attach(device_t dev)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
mtx_init(&viapm->lock, device_get_nameunit(dev), "viapm", MTX_DEF);
if (!(viapm->iores = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&viapm->iorid, RF_ACTIVE | RF_SHAREABLE))) {
device_printf(dev, "could not allocate bus resource\n");
goto error;
}
VIAPM_OUTB(GPIO_DIR, VIAPM_INB(GPIO_DIR) | VIAPM_SCL | VIAPM_SDA);
/* add generic bit-banging code */
if (!(viapm->iicbb = device_add_child(dev, "iicbb", -1)))
goto error;
bus_generic_attach(dev);
return 0;
error:
if (viapm->iores)
bus_release_resource(dev, SYS_RES_IOPORT,
viapm->iorid, viapm->iores);
mtx_destroy(&viapm->lock);
return ENXIO;
}
static int
viapm_586b_detach(device_t dev)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
bus_generic_detach(dev);
if (viapm->iicbb) {
device_delete_child(dev, viapm->iicbb);
}
if (viapm->iores)
bus_release_resource(dev, SYS_RES_IOPORT, viapm->iorid,
viapm->iores);
mtx_destroy(&viapm->lock);
return 0;
}
static int
viapm_pro_detach(device_t dev)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
bus_generic_detach(dev);
if (viapm->smbus) {
device_delete_child(dev, viapm->smbus);
}
bus_release_resource(dev, SYS_RES_IOPORT, viapm->iorid, viapm->iores);
#ifdef notyet
bus_release_resource(dev, SYS_RES_IRQ, viapm->irqrid, viapm->irqres);
#endif
mtx_destroy(&viapm->lock);
return 0;
}
static int
viabb_callback(device_t dev, int index, caddr_t *data)
{
return 0;
}
static void
viabb_setscl(device_t dev, int ctrl)
{
struct viapm_softc *viapm = device_get_softc(dev);
u_char val;
VIAPM_LOCK(viapm);
val = VIAPM_INB(GPIO_VAL);
if (ctrl)
val |= VIAPM_SCL;
else
val &= ~VIAPM_SCL;
VIAPM_OUTB(GPIO_VAL, val);
VIAPM_UNLOCK(viapm);
return;
}
static void
viabb_setsda(device_t dev, int data)
{
struct viapm_softc *viapm = device_get_softc(dev);
u_char val;
VIAPM_LOCK(viapm);
val = VIAPM_INB(GPIO_VAL);
if (data)
val |= VIAPM_SDA;
else
val &= ~VIAPM_SDA;
VIAPM_OUTB(GPIO_VAL, val);
VIAPM_UNLOCK(viapm);
return;
}
static int
viabb_reset(device_t dev, u_char speed, u_char addr, u_char *oldaddr)
{
/* reset bus */
viabb_setsda(dev, 1);
viabb_setscl(dev, 1);
return (IIC_ENOADDR);
}
static int
viabb_getscl(device_t dev)
{
struct viapm_softc *viapm = device_get_softc(dev);
u_char val;
VIAPM_LOCK(viapm);
val = VIAPM_INB(EXTSMI_VAL);
VIAPM_UNLOCK(viapm);
return ((val & VIAPM_SCL) != 0);
}
static int
viabb_getsda(device_t dev)
{
struct viapm_softc *viapm = device_get_softc(dev);
u_char val;
VIAPM_LOCK(viapm);
val = VIAPM_INB(EXTSMI_VAL);
VIAPM_UNLOCK(viapm);
return ((val & VIAPM_SDA) != 0);
}
static int
viapm_abort(struct viapm_softc *viapm)
{
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_KILL);
DELAY(10);
return (0);
}
static int
viapm_clear(struct viapm_softc *viapm)
{
VIAPM_OUTB(SMBHST, SMBHST_FAILED | SMBHST_COLLID |
SMBHST_ERROR | SMBHST_INTR);
DELAY(10);
return (0);
}
static int
viapm_busy(struct viapm_softc *viapm)
{
u_char sts;
sts = VIAPM_INB(SMBHST);
VIAPM_DEBUG(printf("viapm: idle? STS=0x%x\n", sts));
return (sts & SMBHST_BUSY);
}
/*
* Poll the SMBus controller
*/
static int
viapm_wait(struct viapm_softc *viapm)
{
int count = 10000;
u_char sts = 0;
int error;
VIAPM_LOCK_ASSERT(viapm);
/* wait for command to complete and SMBus controller is idle */
while(count--) {
DELAY(10);
sts = VIAPM_INB(SMBHST);
/* check if the controller is processing a command */
if (!(sts & SMBHST_BUSY) && (sts & SMBHST_INTR))
break;
}
VIAPM_DEBUG(printf("viapm: SMBHST=0x%x\n", sts));
error = SMB_ENOERR;
if (!count)
error |= SMB_ETIMEOUT;
if (sts & SMBHST_FAILED)
error |= SMB_EABORT;
if (sts & SMBHST_COLLID)
error |= SMB_ENOACK;
if (sts & SMBHST_ERROR)
error |= SMB_EBUSERR;
if (error != SMB_ENOERR)
viapm_abort(viapm);
viapm_clear(viapm);
return (error);
}
static int
viasmb_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
viasmb_quick(device_t dev, u_char slave, int how)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
switch (how) {
case SMB_QWRITE:
VIAPM_DEBUG(printf("viapm: QWRITE to 0x%x", slave));
VIAPM_OUTB(SMBHADDR, slave & ~LSB);
break;
case SMB_QREAD:
VIAPM_DEBUG(printf("viapm: QREAD to 0x%x", slave));
VIAPM_OUTB(SMBHADDR, slave | LSB);
break;
default:
panic("%s: unknown QUICK command (%x)!", __func__, how);
}
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_QUICK);
error = viapm_wait(viapm);
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_sendb(device_t dev, u_char slave, char byte)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave & ~ LSB);
VIAPM_OUTB(SMBHCMD, byte);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_SENDRECV);
error = viapm_wait(viapm);
VIAPM_DEBUG(printf("viapm: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_recvb(device_t dev, u_char slave, char *byte)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave | LSB);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_SENDRECV);
if ((error = viapm_wait(viapm)) == SMB_ENOERR)
*byte = VIAPM_INB(SMBHDATA0);
VIAPM_DEBUG(printf("viapm: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_writeb(device_t dev, u_char slave, char cmd, char byte)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave & ~ LSB);
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHDATA0, byte);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BYTE);
error = viapm_wait(viapm);
VIAPM_DEBUG(printf("viapm: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_readb(device_t dev, u_char slave, char cmd, char *byte)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave | LSB);
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BYTE);
if ((error = viapm_wait(viapm)) == SMB_ENOERR)
*byte = VIAPM_INB(SMBHDATA0);
VIAPM_DEBUG(printf("viapm: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, *byte, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_writew(device_t dev, u_char slave, char cmd, short word)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave & ~ LSB);
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHDATA0, word & 0x00ff);
VIAPM_OUTB(SMBHDATA1, (word & 0xff00) >> 8);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_WORD);
error = viapm_wait(viapm);
VIAPM_DEBUG(printf("viapm: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_readw(device_t dev, u_char slave, char cmd, short *word)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
int error;
u_char high, low;
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave | LSB);
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_WORD);
if ((error = viapm_wait(viapm)) == SMB_ENOERR) {
low = VIAPM_INB(SMBHDATA0);
high = VIAPM_INB(SMBHDATA1);
*word = ((high & 0xff) << 8) | (low & 0xff);
}
VIAPM_DEBUG(printf("viapm: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, *word, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
u_char i;
int error;
if (count < 1 || count > 32)
return (SMB_EINVAL);
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave & ~LSB);
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHDATA0, count);
i = VIAPM_INB(SMBHCTRL);
/* fill the 32-byte internal buffer */
for (i = 0; i < count; i++) {
VIAPM_OUTB(SMBHBLOCK, buf[i]);
DELAY(2);
}
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BLOCK);
error = viapm_wait(viapm);
VIAPM_DEBUG(printf("viapm: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static int
viasmb_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)
{
struct viapm_softc *viapm = (struct viapm_softc *)device_get_softc(dev);
u_char data, len, i;
int error;
if (*count < 1 || *count > 32)
return (SMB_EINVAL);
VIAPM_LOCK(viapm);
viapm_clear(viapm);
if (viapm_busy(viapm)) {
VIAPM_UNLOCK(viapm);
return (SMB_EBUSY);
}
VIAPM_OUTB(SMBHADDR, slave | LSB);
VIAPM_OUTB(SMBHCMD, cmd);
VIAPM_OUTB(SMBHCTRL, SMBHCTRL_START | SMBHCTRL_BLOCK);
if ((error = viapm_wait(viapm)) != SMB_ENOERR)
goto error;
len = VIAPM_INB(SMBHDATA0);
i = VIAPM_INB(SMBHCTRL); /* reset counter */
/* read the 32-byte internal buffer */
for (i = 0; i < len; i++) {
data = VIAPM_INB(SMBHBLOCK);
if (i < *count)
buf[i] = data;
DELAY(2);
}
*count = len;
error:
VIAPM_DEBUG(printf("viapm: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, *count, cmd, error));
VIAPM_UNLOCK(viapm);
return (error);
}
static device_method_t viapm_methods[] = {
/* device interface */
DEVMETHOD(device_probe, viapm_586b_probe),
DEVMETHOD(device_attach, viapm_586b_attach),
DEVMETHOD(device_detach, viapm_586b_detach),
/* iicbb interface */
DEVMETHOD(iicbb_callback, viabb_callback),
DEVMETHOD(iicbb_setscl, viabb_setscl),
DEVMETHOD(iicbb_setsda, viabb_setsda),
DEVMETHOD(iicbb_getscl, viabb_getscl),
DEVMETHOD(iicbb_getsda, viabb_getsda),
DEVMETHOD(iicbb_reset, viabb_reset),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
{ 0, 0 }
};
static driver_t viapm_driver = {
"viapm",
viapm_methods,
sizeof(struct viapm_softc),
};
static device_method_t viapropm_methods[] = {
/* device interface */
DEVMETHOD(device_probe, viapm_pro_probe),
DEVMETHOD(device_attach, viapm_pro_attach),
DEVMETHOD(device_detach, viapm_pro_detach),
/* smbus interface */
DEVMETHOD(smbus_callback, viasmb_callback),
DEVMETHOD(smbus_quick, viasmb_quick),
DEVMETHOD(smbus_sendb, viasmb_sendb),
DEVMETHOD(smbus_recvb, viasmb_recvb),
DEVMETHOD(smbus_writeb, viasmb_writeb),
DEVMETHOD(smbus_readb, viasmb_readb),
DEVMETHOD(smbus_writew, viasmb_writew),
DEVMETHOD(smbus_readw, viasmb_readw),
DEVMETHOD(smbus_bwrite, viasmb_bwrite),
DEVMETHOD(smbus_bread, viasmb_bread),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
{ 0, 0 }
};
static driver_t viapropm_driver = {
"viapropm",
viapropm_methods,
sizeof(struct viapm_softc),
};
DRIVER_MODULE(viapm, pci, viapm_driver, viapm_devclass, 0, 0);
DRIVER_MODULE(viapropm, pci, viapropm_driver, viapropm_devclass, 0, 0);
DRIVER_MODULE(iicbb, viapm, iicbb_driver, iicbb_devclass, 0, 0);
DRIVER_MODULE(smbus, viapropm, smbus_driver, smbus_devclass, 0, 0);
MODULE_DEPEND(viapm, pci, 1, 1, 1);
MODULE_DEPEND(viapropm, pci, 1, 1, 1);
MODULE_DEPEND(viapm, iicbb, IICBB_MINVER, IICBB_PREFVER, IICBB_MAXVER);
MODULE_DEPEND(viapropm, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
MODULE_VERSION(viapm, 1);
#ifdef DEV_ISA
DRIVER_MODULE(isa, viapm, isa_driver, isa_devclass, 0, 0);
DRIVER_MODULE(isa, viapropm, isa_driver, isa_devclass, 0, 0);
MODULE_DEPEND(viapm, isa, 1, 1, 1);
MODULE_DEPEND(viapropm, isa, 1, 1, 1);
#endif
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