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author | Yinghai Lu <yinghailu@gmail.com> | 2004-12-03 03:39:04 +0000 |
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committer | Yinghai Lu <yinghailu@gmail.com> | 2004-12-03 03:39:04 +0000 |
commit | 7213d0f513c2a0dbcacbf0a811d01322cd82d25b (patch) | |
tree | f40eb3d7e577af50edbc10f0df921fd34de9e075 /src/drivers/generic | |
parent | 57b6786168683e33c1c6c2d8df6a1e8c0246fbde (diff) | |
download | coreboot-staging-7213d0f513c2a0dbcacbf0a811d01322cd82d25b.zip coreboot-staging-7213d0f513c2a0dbcacbf0a811d01322cd82d25b.tar.gz |
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.c | 90 |
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 727d474..56558e1 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; } } |