sky2: GPIO register

The General Purpose I/O register is yet another hardware workaround
catchall. Enable workaround that vendor driver does to stay
but for bug compatiable.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index fbe39d929277..1f1b6db434be 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -230,6 +230,11 @@ static void sky2_power_on(struct sky2_hw *hw)
                 sky2_pci_write32(hw, PCI_DEV_REG5, reg);
 
                 sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
+
+                /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
+                reg = sky2_read32(hw, B2_GP_IO);
+                reg |= GLB_GPIO_STAT_RACE_DIS;
+                sky2_write32(hw, B2_GP_IO, reg);
         }
 }
 
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 00907f58019e..c6c0baffc082 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -441,6 +441,20 @@ enum {
         TST_CFG_WRITE_OFF= 1<<0, /* Disable Config Reg WR */
 };
 
+/*      B2_GPIO */
+enum {
+        GLB_GPIO_CLK_DEB_ENA = 1<<31,   /* Clock Debug Enable */
+        GLB_GPIO_CLK_DBG_MSK = 0xf<<26, /* Clock Debug */
+
+        GLB_GPIO_INT_RST_D3_DIS = 1<<15, /* Disable Internal Reset After D3 to D0 */
+        GLB_GPIO_LED_PAD_SPEED_UP = 1<<14, /* LED PAD Speed Up */
+        GLB_GPIO_STAT_RACE_DIS  = 1<<13, /* Status Race Disable */
+        GLB_GPIO_TEST_SEL_MSK   = 3<<11, /* Testmode Select */
+        GLB_GPIO_TEST_SEL_BASE  = 1<<11,
+        GLB_GPIO_RAND_ENA       = 1<<10, /* Random Enable */
+        GLB_GPIO_RAND_BIT_1     = 1<<9,  /* Random Bit 1 */
+};
+
 /*      B2_MAC_CFG               8 bit  MAC Configuration / Chip Revision */
 enum {
         CFG_CHIP_R_MSK    = 0xf<<4,     /* Bit 7.. 4: Chip Revision */