[net-next 08/15] ixgbe: check Core Clock Disable bit
flat view
STALE4601d
From: Jeff Kirsher <hidden>
Date: 2014-03-20 08:33:54
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Jacob Keller <jacob.e.keller@intel.com> This patch corrects the stop_mac_link_on_d3 function in ixgbe_82599 by checking the Core Clock Disable bit before stopping link. CC: Arun Sharma <redacted> Reported-by: Chris Pavlas <redacted> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c | 6 +++++- drivers/net/ethernet/intel/ixgbe/ixgbe_type.h | 3 +++ 2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
index 572cce4..fcba1d9 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c@@ -518,8 +518,12 @@ out: static void ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw *hw) { u32 autoc2_reg; + u16 ee_ctrl_2 = 0; - if (!hw->mng_fw_enabled && !hw->wol_enabled) { + hw->eeprom.ops.read(hw, IXGBE_EEPROM_CTRL_2, &ee_ctrl_2); + + if (!hw->mng_fw_enabled && !hw->wol_enabled && + ee_ctrl_2 & IXGBE_EEPROM_CCD_BIT) { autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2); autoc2_reg |= IXGBE_AUTOC2_LINK_DISABLE_ON_D3_MASK; IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 69271bc..5b0c730 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h@@ -1793,6 +1793,9 @@ enum { #define IXGBE_EEPROM_RD_BUFFER_MAX_COUNT 512 /* EEPROM words # read in burst */ #define IXGBE_EEPROM_WR_BUFFER_MAX_COUNT 256 /* EEPROM words # wr in burst */ +#define IXGBE_EEPROM_CTRL_2 1 /* EEPROM CTRL word 2 */ +#define IXGBE_EEPROM_CCD_BIT 2 /* EEPROM Core Clock Disable bit */ + #ifndef IXGBE_EEPROM_GRANT_ATTEMPTS #define IXGBE_EEPROM_GRANT_ATTEMPTS 1000 /* EEPROM # attempts to gain grant */ #endif
--
1.8.3.1