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Commit 0665b09f authored by Emil Tantilov's avatar Emil Tantilov Committed by Jeff Kirsher
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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: default avatarEmil Tantilov <emil.s.tantilov@intel.com>
Tested-by: default avatarEvan Swanson <evan.swanson@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 83dfde40

drivers/net/ixgbe/ixgbe_82599.c

+30 −1
Original line number Diff line number Diff line
@@ -2064,6 +2064,35 @@ static bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw) 
	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,