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authorYinghai Lu <yinghailu@gmail.com>2004-12-03 03:39:04 +0000
committerYinghai Lu <yinghailu@gmail.com>2004-12-03 03:39:04 +0000
commit7213d0f513c2a0dbcacbf0a811d01322cd82d25b (patch)
treef40eb3d7e577af50edbc10f0df921fd34de9e075 /src/drivers/generic
parent57b6786168683e33c1c6c2d8df6a1e8c0246fbde (diff)
downloadcoreboot-7213d0f513c2a0dbcacbf0a811d01322cd82d25b.tar.xz
i2c mux support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1809 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/drivers/generic')
-rw-r--r--src/drivers/generic/debug/debug_dev.c90
1 files changed, 69 insertions, 21 deletions
diff --git a/src/drivers/generic/debug/debug_dev.c b/src/drivers/generic/debug/debug_dev.c
index 727d4747f5..56558e1938 100644
--- a/src/drivers/generic/debug/debug_dev.c
+++ b/src/drivers/generic/debug/debug_dev.c
@@ -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;
}
}