1 // SPDX-License-Identifier: GPL-2.0
8  * igc_poll_eerd_eewr_done - Poll for EEPROM read/write completion
12  * Polls the EEPROM status bit for either read or write completion based
17 	s32 ret_val = -IGC_ERR_NVM;  in igc_poll_eerd_eewr_done()
39  * igc_acquire_nvm - Generic request for access to EEPROM
44  * EEPROM access and return -IGC_ERR_NVM (-1).
60 		timeout--;  in igc_acquire_nvm()
67 		ret_val = -IGC_ERR_NVM;  in igc_acquire_nvm()
74  * igc_release_nvm - Release exclusive access to EEPROM
89  * igc_read_nvm_eerd - Reads EEPROM using EERD register
91  * @offset: offset of word in the EEPROM to read
92  * @words: number of words to read
93  * @data: word read from the EEPROM
99 	struct igc_nvm_info *nvm = &hw->nvm;  in igc_read_nvm_eerd()
106 	if (offset >= nvm->word_size || (words > (nvm->word_size - offset)) ||  in igc_read_nvm_eerd()
108 		hw_dbg("nvm parameter(s) out of bounds\n");  in igc_read_nvm_eerd()
109 		ret_val = -IGC_ERR_NVM;  in igc_read_nvm_eerd()
110 		goto out;  in igc_read_nvm_eerd()
125 out:  in igc_read_nvm_eerd()
130  * igc_read_mac_addr - Read device MAC address
143 		hw->mac.perm_addr[i] = (u8)(rar_low >> (i * 8));  in igc_read_mac_addr()
146 		hw->mac.perm_addr[i + 4] = (u8)(rar_high >> (i * 8));  in igc_read_mac_addr()
149 		hw->mac.addr[i] = hw->mac.perm_addr[i];  in igc_read_mac_addr()
155  * igc_validate_nvm_checksum - Validate EEPROM checksum
168 		ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);  in igc_validate_nvm_checksum()
170 			hw_dbg("NVM Read Error\n");  in igc_validate_nvm_checksum()
171 			goto out;  in igc_validate_nvm_checksum()
178 		ret_val = -IGC_ERR_NVM;  in igc_validate_nvm_checksum()
179 		goto out;  in igc_validate_nvm_checksum()
182 out:  in igc_validate_nvm_checksum()
187  * igc_update_nvm_checksum - Update EEPROM checksum
201 		ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);  in igc_update_nvm_checksum()
203 			hw_dbg("NVM Read Error while updating checksum.\n");  in igc_update_nvm_checksum()
204 			goto out;  in igc_update_nvm_checksum()
208 	checksum = (u16)NVM_SUM - checksum;  in igc_update_nvm_checksum()
209 	ret_val = hw->nvm.ops.write(hw, NVM_CHECKSUM_REG, 1, &checksum);  in igc_update_nvm_checksum()
213 out:  in igc_update_nvm_checksum()