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Commit 18f680c6 authored by Kamil Krawczyk's avatar Kamil Krawczyk Committed by Jeff Kirsher
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i40e: Adding function for reading PBA String 



Function will read PBA Block from Shadow RAM and return it in a string format.

Change-ID: I4ee7059f6e21bd0eba38687da15e772e0b4ab36e
Signed-off-by: default avatarKamil Krawczyk <kamil.krawczyk@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 9fee9db5

drivers/net/ethernet/intel/i40e/i40e_common.c

+59 −0
Original line number Diff line number Diff line
@@ -741,6 +741,65 @@ i40e_status i40e_get_san_mac_addr(struct i40e_hw *hw, u8 *mac_addr) 
}

#endif



/**

 *  i40e_read_pba_string - Reads part number string from EEPROM

 *  @hw: pointer to hardware structure

 *  @pba_num: stores the part number string from the EEPROM

 *  @pba_num_size: part number string buffer length

 *

 *  Reads the part number string from the EEPROM.

 **/

i40e_status i40e_read_pba_string(struct i40e_hw *hw, u8 *pba_num,

				 u32 pba_num_size)

{

	i40e_status status = 0;

	u16 pba_word = 0;

	u16 pba_size = 0;

	u16 pba_ptr = 0;

	u16 i = 0;



	status = i40e_read_nvm_word(hw, I40E_SR_PBA_FLAGS, &pba_word);

	if (status || (pba_word != 0xFAFA)) {

		hw_dbg(hw, "Failed to read PBA flags or flag is invalid.\n");

		return status;

	}



	status = i40e_read_nvm_word(hw, I40E_SR_PBA_BLOCK_PTR, &pba_ptr);

	if (status) {

		hw_dbg(hw, "Failed to read PBA Block pointer.\n");

		return status;

	}



	status = i40e_read_nvm_word(hw, pba_ptr, &pba_size);

	if (status) {

		hw_dbg(hw, "Failed to read PBA Block size.\n");

		return status;

	}



	/* Subtract one to get PBA word count (PBA Size word is included in

	 * total size)

	 */

	pba_size--;

	if (pba_num_size < (((u32)pba_size * 2) + 1)) {

		hw_dbg(hw, "Buffer to small for PBA data.\n");

		return I40E_ERR_PARAM;

	}



	for (i = 0; i < pba_size; i++) {

		status = i40e_read_nvm_word(hw, (pba_ptr + 1) + i, &pba_word);

		if (status) {

			hw_dbg(hw, "Failed to read PBA Block word %d.\n", i);

			return status;

		}



		pba_num[(i * 2)] = (pba_word >> 8) & 0xFF;

		pba_num[(i * 2) + 1] = pba_word & 0xFF;

	}

	pba_num[(pba_size * 2)] = '\0';



	return status;

}



/**

 * i40e_get_media_type - Gets media type

 * @hw: pointer to the hardware structure

drivers/net/ethernet/intel/i40e/i40e_prototype.h

+2 −0
Original line number Diff line number Diff line
@@ -248,6 +248,8 @@ void i40e_clear_pxe_mode(struct i40e_hw *hw); 
bool i40e_get_link_status(struct i40e_hw *hw);

i40e_status i40e_get_mac_addr(struct i40e_hw *hw, u8 *mac_addr);

i40e_status i40e_get_port_mac_addr(struct i40e_hw *hw, u8 *mac_addr);

i40e_status i40e_read_pba_string(struct i40e_hw *hw, u8 *pba_num,

				 u32 pba_num_size);

i40e_status i40e_validate_mac_addr(u8 *mac_addr);

void i40e_pre_tx_queue_cfg(struct i40e_hw *hw, u32 queue, bool enable);

#ifdef I40E_FCOE

drivers/net/ethernet/intel/i40e/i40e_type.h

+2 −0
Original line number Diff line number Diff line
@@ -1140,6 +1140,8 @@ struct i40e_hw_port_stats { 
/* Checksum and Shadow RAM pointers */

#define I40E_SR_NVM_CONTROL_WORD		0x00

#define I40E_SR_EMP_MODULE_PTR			0x0F

#define I40E_SR_PBA_FLAGS			0x15

#define I40E_SR_PBA_BLOCK_PTR			0x16

#define I40E_SR_NVM_IMAGE_VERSION		0x18

#define I40E_SR_NVM_WAKE_ON_LAN			0x19

#define I40E_SR_ALTERNATE_SAN_MAC_ADDRESS_PTR	0x27