Dump register contents during init.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

---

diff -r b0dc16d276be drivers/ata/pata_cs5536.c
--- a/drivers/ata/pata_cs5536.c	Tue Feb 12 08:52:44 2008 -0500
+++ b/drivers/ata/pata_cs5536.c	Wed Feb 13 01:51:00 2008 -0500
@@ -73,6 +73,11 @@ enum {
 	IDE_CAST_CMD_SHIFT	= 24,
 
 	IDE_ETC_NODMA		= 0x03,
+
+	CFG_REG_MASK		= 0x34002,
+	DTC_REG_MASK		= 0xffff0000,
+	CAST_REG_MASK		= 0xff0000f0,
+	ETC_REG_MASK		= 0xc7c70000,
 };
 
 static int use_msr;
@@ -84,6 +89,23 @@ static const u8 pci_reg[4] = {
 static const u8 pci_reg[4] = {
 	PCI_IDE_CFG, PCI_IDE_DTC, PCI_IDE_CAST, PCI_IDE_ETC,
 };
+
+static void cs5536_regs(void)
+{
+        u32 reg, dummy;
+
+        rdmsr(MSR_IDE_CFG, reg, dummy);
+        printk(KERN_ERR " CFG  = 0x%08x\n", reg & CFG_REG_MASK);
+
+        rdmsr(MSR_IDE_DTC, reg, dummy);
+        printk(KERN_ERR " DTC  = 0x%08x\n", reg & DTC_REG_MASK);
+
+        rdmsr(MSR_IDE_CAST, reg, dummy);
+        printk(KERN_ERR " CAST = 0x%08x\n", reg & CAST_REG_MASK);
+
+        rdmsr(MSR_IDE_ETC, reg, dummy);
+        printk(KERN_ERR " ETC  = 0x%08x\n", reg & ETC_REG_MASK);
+}
 
 static inline int cs5536_read(struct pci_dev *pdev, int reg, int *val)
 {
@@ -303,6 +325,8 @@ static int cs5536_init_one(struct pci_de
 		return -ENODEV;
 	}
 
+	cs5536_regs();
+
 	return ata_pci_init_one(dev, ppi);
 }