From 0665b09f81760c38a882bed65d495a4bd31a5767 Mon Sep 17 00:00:00 2001 From: Emil Tantilov Date: Fri, 1 Apr 2011 08:17:19 +0000 Subject: ixgbe: add support for 64k EEPROM for 82599 82599 supports up to 32k EEPROM addressing via EERD register. If we wish to address larger EEPROM this have to be done via serial interface. This patch adds function ixgbe_read_eeprom_82599 which selects the best method to read the EEPROM. Signed-off-by: Emil Tantilov Tested-by: Evan Swanson Signed-off-by: Jeff Kirsher diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c index b341ed8..d521baf 100644 --- a/drivers/net/ixgbe/ixgbe_82599.c +++ b/drivers/net/ixgbe/ixgbe_82599.c @@ -2064,6 +2064,35 @@ out: return lesm_enabled; } +/** + * ixgbe_read_eeprom_82599 - Read EEPROM word using + * fastest available method + * + * @hw: pointer to hardware structure + * @offset: offset of word in the EEPROM to read + * @data: word read from the EEPROM + * + * Reads a 16 bit word from the EEPROM + **/ +static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw, + u16 offset, u16 *data) +{ + struct ixgbe_eeprom_info *eeprom = &hw->eeprom; + s32 ret_val = IXGBE_ERR_CONFIG; + + /* + * If EEPROM is detected and can be addressed using 14 bits, + * use EERD otherwise use bit bang + */ + if ((eeprom->type == ixgbe_eeprom_spi) && + (offset <= IXGBE_EERD_MAX_ADDR)) + ret_val = ixgbe_read_eerd_generic(hw, offset, data); + else + ret_val = ixgbe_read_eeprom_bit_bang_generic(hw, offset, data); + + return ret_val; +} + static struct ixgbe_mac_operations mac_ops_82599 = { .init_hw = &ixgbe_init_hw_generic, .reset_hw = &ixgbe_reset_hw_82599, @@ -2110,7 +2139,7 @@ static struct ixgbe_mac_operations mac_ops_82599 = { static struct ixgbe_eeprom_operations eeprom_ops_82599 = { .init_params = &ixgbe_init_eeprom_params_generic, - .read = &ixgbe_read_eerd_generic, + .read = &ixgbe_read_eeprom_82599, .write = &ixgbe_write_eeprom_generic, .calc_checksum = &ixgbe_calc_eeprom_checksum_generic, .validate_checksum = &ixgbe_validate_eeprom_checksum_generic, -- cgit v0.10.2