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i2c mux support

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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Yinghai Lu
2004-12-03 03:39:04 +00:00
parent 57b6786168
commit 7213d0f513
23 changed files with 686 additions and 151 deletions
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90
src/drivers/generic/debug/debug_dev.c
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@@ -1,5 +1,6 @@
#include <console/console.h>
#include <device/device.h>
#include <device/smbus.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
@@ -46,7 +47,7 @@ static void print_pci_regs_all(void)
if(!dev->enabled) {
continue;
}
printk_debug("\n%02x:%02x:%02x aka %s",i,j,k, dev_path(dev));
printk_debug("\n%02x:%02x:%02x aka %s",i,j,k, dev_path(dev));
print_pci_regs(dev);
}
}
@@ -56,28 +57,72 @@ static void print_pci_regs_all(void)
static void print_msr()
{
msr_t msr;
unsigned index;
unsigned eax, ebx, ecx, edx;
index = 0x80000007;
printk_debug("calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
printk_debug("cpuid[%08x]: %08x %08x %08x %08x\n",
index, eax, ebx, ecx, edx);
if (edx & (3 << 1)) {
index = 0xC0010042;
printk_debug("Reading msr: 0x%08x\n", index);
msr = rdmsr(index);
printk_debug("msr[0x%08x]: 0x%08x%08x\n",
index, msr.hi, msr.hi);
}
msr_t msr;
unsigned index;
unsigned eax, ebx, ecx, edx;
index = 0x80000007;
printk_debug("calling cpuid 0x%08x\n", index);
asm volatile(
"cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (index)
);
printk_debug("cpuid[%08x]: %08x %08x %08x %08x\n",
index, eax, ebx, ecx, edx);
if (edx & (3 << 1)) {
index = 0xC0010042;
printk_debug("Reading msr: 0x%08x\n", index);
msr = rdmsr(index);
printk_debug("msr[0x%08x]: 0x%08x%08x\n",
index, msr.hi, msr.hi);
}
}
static void print_smbus_regs(struct device *dev)
{
int j;
printk_debug("smbus: %s[%d]->", dev_path(dev->bus->dev), dev->bus->link );
printk_debug("%s", dev_path(dev));
for(j = 0; j < 256; j++) {
int status;
unsigned char byte;
if ((j & 0xf) == 0) {
printk_debug("\r\n%02x: ", j);
}
status = smbus_read_byte(dev, j);
if (status < 0) {
printk_debug("bad device status= %08x\r\n", status);
break;
}
byte = status & 0xff;
printk_debug("%02x ", byte);
}
printk_debug("\r\n");
}
static void print_smbus_regs_all(struct device *dev)
{
struct device *child;
int i;
if (dev->enabled && dev->path.type == DEVICE_PATH_I2C)
{
// Here don't need to call smbus_set_link, because we scan it from top to down
if( dev->bus->dev->path.type == DEVICE_PATH_I2C) { // it's under i2c MUX so set mux at first
if(ops_smbus_bus(get_pbus_smbus(dev->bus->dev))) {
if(dev->bus->dev->ops && dev->bus->dev->ops->set_link)
dev->bus->dev->ops->set_link(dev->bus->dev, dev->bus->link);
}
}
if(ops_smbus_bus(get_pbus_smbus(dev))) print_smbus_regs(dev);
}
for(i=0; i< dev->links; i++) {
for (child = dev->link[i].children; child; child = child->sibling) {
print_smbus_regs_all(child);
}
}
}
static void debug_init(device_t dev)
{
device_t parent;
@@ -103,6 +148,9 @@ static void debug_init(device_t dev)
case 3:
print_msr();
break;
case 4:
print_smbus_regs_all(&dev_root);
break;
}
}