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#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <cpu/p6/msr.h>
#include <arch/io.h>
#include <device/chip.h>
#include "../../../northbridge/amd/amdk8/northbridge.h"
#include "chip.h"
#include "pc80/mc146818rtc.h"
unsigned long initial_apicid[CONFIG_MAX_CPUS] =
{
0, 1,
};
#define SMBGSTATUS 0xe0
#define SMBGCTL 0xe2
#define SMBHSTADDR 0xe4
#define SMBHSTDAT 0xe6
#define SMBHSTCMD 0xe8
#define SMBHSTFIFO 0xe9
#define SMBUS_TIMEOUT (100*1000*10)
static inline void smbus_delay(void)
{
outb(0x80, 0x80);
}
static int smbus_wait_until_ready(unsigned smbus_io_base)
{
unsigned long loops;
loops = SMBUS_TIMEOUT;
do {
unsigned short val;
smbus_delay();
val = inw(smbus_io_base + SMBGSTATUS);
if ((val & 0x800) == 0) {
break;
}
if(loops == (SMBUS_TIMEOUT / 2)) {
outw(inw(smbus_io_base + SMBGSTATUS),
smbus_io_base + SMBGSTATUS);
}
} while(--loops);
return loops?0:-2;
}
static int smbus_wait_until_done(unsigned smbus_io_base)
{
unsigned long loops;
loops = SMBUS_TIMEOUT;
do {
unsigned short val;
smbus_delay();
val = inw(smbus_io_base + SMBGSTATUS);
if (((val & 0x8) == 0) | ((val & 0x437) != 0)) {
break;
}
} while(--loops);
return loops?0:-3;
}
static int smbus_send_byte(unsigned smbus_io_base, unsigned device, unsigned value)
{
unsigned char global_status_register;
if (smbus_wait_until_ready(smbus_io_base) < 0) {
return -2;
}
/* setup transaction */
/* disable interrupts */
outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), smbus_io_base + SMBGCTL);
/* set the device I'm talking too */
outw(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR);
/* set the command/address... */
outb(0, smbus_io_base + SMBHSTCMD);
/* set up for a send byte */
outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x1), smbus_io_base + SMBGCTL);
/* clear any lingering errors, so the transaction will run */
/* Do I need to write the bits to a 1 to clear an error? */
outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS);
/* set the data word...*/
outw(value, smbus_io_base + SMBHSTDAT);
/* start the command */
outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL);
/* poll for transaction completion */
if (smbus_wait_until_done(smbus_io_base) < 0) {
return -3;
}
global_status_register = inw(smbus_io_base + SMBGSTATUS);
if (global_status_register != (1 << 4)) {
return -1;
}
return 0;
}
static int smbus_recv_byte(unsigned smbus_io_base, unsigned device)
{
unsigned char global_status_register;
unsigned char byte;
if (smbus_wait_until_ready(smbus_io_base) < 0) {
return -2;
}
/* setup transaction */
/* disable interrupts */
outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), smbus_io_base + SMBGCTL);
/* set the device I'm talking too */
outw(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR);
/* set the command/address... */
outb(0, smbus_io_base + SMBHSTCMD);
/* set up for a send byte */
outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x1), smbus_io_base + SMBGCTL);
/* clear any lingering errors, so the transaction will run */
/* Do I need to write the bits to a 1 to clear an error? */
outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS);
/* set the data word...*/
outw(0, smbus_io_base + SMBHSTDAT);
/* start the command */
outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL);
/* poll for transaction completion */
if (smbus_wait_until_done(smbus_io_base) < 0) {
return -3;
}
global_status_register = inw(smbus_io_base + SMBGSTATUS);
/* read results of transaction */
byte = inw(smbus_io_base + SMBHSTDAT) & 0xff;
if (global_status_register != (1 << 4)) {
return -1;
}
return byte;
}
#if 0
static int smbus_read_byte(unsigned smbus_io_base, unsigned device, unsigned address)
{
unsigned char global_status_register;
unsigned char byte;
if (smbus_wait_until_ready(smbus_io_base) < 0) {
return -2;
}
/* setup transaction */
/* disable interrupts */
outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), smbus_io_base + SMBGCTL);
/* set the device I'm talking too */
outw(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR);
/* set the command/address... */
outb(address & 0xFF, smbus_io_base + SMBHSTCMD);
/* set up for a byte data read */
outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x2), smbus_io_base + SMBGCTL);
/* clear any lingering errors, so the transaction will run */
/* Do I need to write the bits to a 1 to clear an error? */
outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS);
/* clear the data word...*/
outw(0, smbus_io_base + SMBHSTDAT);
/* start the command */
outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL);
/* poll for transaction completion */
if (smbus_wait_until_done(smbus_io_base) < 0) {
return -3;
}
global_status_register = inw(smbus_io_base + SMBGSTATUS);
/* read results of transaction */
byte = inw(smbus_io_base + SMBHSTDAT) & 0xff;
if (global_status_register != (1 << 4)) {
return -1;
}
return byte;
}
static int smbus_write_byte(unsigned smbus_io_base, unsigned device, unsigned address, unsigned char val)
{
if (smbus_wait_until_ready(smbus_io_base) < 0) {
return -2;
}
/* setup transaction */
/* disable interrupts */
outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)),
smbus_io_base + SMBGCTL);
/* set the device I'm talking too */
outw(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR);
outb(address & 0xFF, smbus_io_base + SMBHSTCMD);
/* set up for a byte data write */ /* FIXME */
outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x1), smbus_io_base + SMBGCTL);
/* clear any lingering errors, so the transaction will run */
/* Do I need to write the bits to a 1 to clear an error? */
outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS);
/* clear the data word...*/
outw(val, smbus_io_base + SMBHSTDAT);
/* start the command */
outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL);
/* poll for transaction completion */
if (smbus_wait_until_done(smbus_io_base) < 0) {
return -3;
}
return 0;
}
#endif
#define SMBUS_MUX 0x70
static void mainboard_init(device_t dev)
{
/* Set the mux to see the temperature sensors */
dev = dev_find_device(0x1022, 0x746b, 0);
if (dev) {
unsigned smbus_io_base;
unsigned device;
int result;
int mux_setting;
device = SMBUS_MUX;
mux_setting = 1;
smbus_io_base = pci_read_config32(dev, 0x58) & ~1;;
result = smbus_send_byte(smbus_io_base, device, mux_setting);
if ((result < 0) ||
(smbus_recv_byte(smbus_io_base, device) != mux_setting)) {
printk_err("SMBUS mux would not set to %d\n", mux_setting);
}
}
else {
printk_err("SMBUS_controller not found\n");
}
}
static struct device_operations mainboard_operations = {
.read_resources = root_dev_read_resources,
.set_resources = root_dev_set_resources,
.enable_resources = enable_childrens_resources,
.init = mainboard_init,
.scan_bus = amdk8_scan_root_bus,
.enable = 0,
};
static void enumerate(struct chip *chip)
{
struct chip *child;
if (chip->control && chip->control->name) {
printk_debug("Enumerating: %s\n", chip->control->name);
}
dev_root.ops = &mainboard_operations;
chip->dev = &dev_root;
chip->bus = 0;
for (child = chip->children; child; child = child->next) {
child->bus = &dev_root.link[0];
}
}
struct chip_control mainboard_ibm_e325_control = {
.enumerate = enumerate,
.name = "IBM E325 mainboard ",
};
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