Commit 18f680c6 authored by Kamil Krawczyk's avatar Kamil Krawczyk Committed by Jeff Kirsher
Browse files

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
......@@ -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
......
......@@ -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
......
......@@ -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
......
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