diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c | 59 |
1 files changed, 40 insertions, 19 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c index d88f75fbd832..4b0b1cc77eb4 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c @@ -316,7 +316,7 @@ static s32 ixgbe_write_eewr_buffer_X540(struct ixgbe_hw *hw, * * @hw: pointer to hardware structure **/ -static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) +static s32 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) { u16 i; u16 j; @@ -324,6 +324,8 @@ static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) u16 length = 0; u16 pointer = 0; u16 word = 0; + u16 checksum_last_word = IXGBE_EEPROM_CHECKSUM; + u16 ptr_start = IXGBE_PCIE_ANALOG_PTR; /* * Do not use hw->eeprom.ops.read because we do not want to take @@ -332,10 +334,10 @@ static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) */ /* Include 0x0-0x3F in the checksum */ - for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) { - if (ixgbe_read_eerd_generic(hw, i, &word) != 0) { + for (i = 0; i < checksum_last_word; i++) { + if (ixgbe_read_eerd_generic(hw, i, &word)) { hw_dbg(hw, "EEPROM read failed\n"); - break; + return IXGBE_ERR_EEPROM; } checksum += word; } @@ -344,11 +346,11 @@ static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) * Include all data from pointers 0x3, 0x6-0xE. This excludes the * FW, PHY module, and PCIe Expansion/Option ROM pointers. */ - for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) { + for (i = ptr_start; i < IXGBE_FW_PTR; i++) { if (i == IXGBE_PHY_PTR || i == IXGBE_OPTION_ROM_PTR) continue; - if (ixgbe_read_eerd_generic(hw, i, &pointer) != 0) { + if (ixgbe_read_eerd_generic(hw, i, &pointer)) { hw_dbg(hw, "EEPROM read failed\n"); break; } @@ -358,8 +360,9 @@ static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) pointer >= hw->eeprom.word_size) continue; - if (ixgbe_read_eerd_generic(hw, pointer, &length) != 0) { + if (ixgbe_read_eerd_generic(hw, pointer, &length)) { hw_dbg(hw, "EEPROM read failed\n"); + return IXGBE_ERR_EEPROM; break; } @@ -368,10 +371,10 @@ static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) (pointer + length) >= hw->eeprom.word_size) continue; - for (j = pointer+1; j <= pointer+length; j++) { - if (ixgbe_read_eerd_generic(hw, j, &word) != 0) { + for (j = pointer + 1; j <= pointer + length; j++) { + if (ixgbe_read_eerd_generic(hw, j, &word)) { hw_dbg(hw, "EEPROM read failed\n"); - break; + return IXGBE_ERR_EEPROM; } checksum += word; } @@ -379,7 +382,7 @@ static u16 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw) checksum = (u16)IXGBE_EEPROM_SUM - checksum; - return checksum; + return (s32)checksum; } /** @@ -410,23 +413,34 @@ static s32 ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw, if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM)) return IXGBE_ERR_SWFW_SYNC; - checksum = hw->eeprom.ops.calc_checksum(hw); + status = hw->eeprom.ops.calc_checksum(hw); + if (status < 0) + goto out; + + checksum = (u16)(status & 0xffff); /* Do not use hw->eeprom.ops.read because we do not want to take * the synchronization semaphores twice here. */ status = ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum); + if (status) + goto out; - hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); + /* Verify read checksum from EEPROM is the same as + * calculated checksum + */ + if (read_checksum != checksum) { + hw_dbg(hw, "Invalid EEPROM checksum"); + status = IXGBE_ERR_EEPROM_CHECKSUM; + } /* If the user cares, return the calculated checksum */ if (checksum_val) *checksum_val = checksum; - /* Verify read and calculated checksums are the same */ - if (read_checksum != checksum) - return IXGBE_ERR_EEPROM_CHECKSUM; +out: + hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); return status; } @@ -457,15 +471,22 @@ static s32 ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw) if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM)) return IXGBE_ERR_SWFW_SYNC; - checksum = hw->eeprom.ops.calc_checksum(hw); + status = hw->eeprom.ops.calc_checksum(hw); + if (status < 0) + goto out; + + checksum = (u16)(status & 0xffff); /* Do not use hw->eeprom.ops.write because we do not want to * take the synchronization semaphores twice here. */ status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM, checksum); - if (!status) - status = ixgbe_update_flash_X540(hw); + if (status) + goto out; + + status = ixgbe_update_flash_X540(hw); +out: hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM); return status; } |