1 // SPDX-License-Identifier: GPL-2.0
10  * igc_acquire_nvm_i225 - Acquire exclusive access to EEPROM
16  * EEPROM access and return -IGC_ERR_NVM (-1).
24  * igc_release_nvm_i225 - Release exclusive access to EEPROM
36  * igc_get_hw_semaphore_i225 - Acquire hardware semaphore
43 	s32 timeout = hw->nvm.word_size + 1;  in igc_get_hw_semaphore_i225()
61 		if (hw->dev_spec._base.clear_semaphore_once) {  in igc_get_hw_semaphore_i225()
62 			hw->dev_spec._base.clear_semaphore_once = false;  in igc_get_hw_semaphore_i225()
75 			hw_dbg("Driver can't access device - SMBI bit is set.\n");  in igc_get_hw_semaphore_i225()
76 			return -IGC_ERR_NVM;  in igc_get_hw_semaphore_i225()
96 		return -IGC_ERR_NVM;  in igc_get_hw_semaphore_i225()
103  * igc_acquire_swfw_sync_i225 - Acquire SW/FW semaphore
120 			ret_val = -IGC_ERR_SWFW_SYNC;  in igc_acquire_swfw_sync_i225()
121 			goto out;  in igc_acquire_swfw_sync_i225()
136 		ret_val = -IGC_ERR_SWFW_SYNC;  in igc_acquire_swfw_sync_i225()
137 		goto out;  in igc_acquire_swfw_sync_i225()
144 out:  in igc_acquire_swfw_sync_i225()
149  * igc_release_swfw_sync_i225 - Release SW/FW semaphore
178  * igc_read_nvm_srrd_i225 - Reads Shadow Ram using EERD register
180  * @offset: offset of word in the Shadow Ram to read
181  * @words: number of words to read
182  * @data: word read from the Shadow Ram
195 	 * to read in bursts than synchronizing access for each word.  in igc_read_nvm_srrd_i225()
198 		count = (words - i) / IGC_EERD_EEWR_MAX_COUNT > 0 ?  in igc_read_nvm_srrd_i225()
199 			IGC_EERD_EEWR_MAX_COUNT : (words - i);  in igc_read_nvm_srrd_i225()
201 		status = hw->nvm.ops.acquire(hw);  in igc_read_nvm_srrd_i225()
206 		hw->nvm.ops.release(hw);  in igc_read_nvm_srrd_i225()
215  * igc_write_nvm_srwr - Write to Shadow Ram using EEWR
229 	struct igc_nvm_info *nvm = &hw->nvm;  in igc_write_nvm_srwr()
230 	s32 ret_val = -IGC_ERR_NVM;  in igc_write_nvm_srwr()
237 	if (offset >= nvm->word_size || (words > (nvm->word_size - offset)) ||  in igc_write_nvm_srwr()
239 		hw_dbg("nvm parameter(s) out of bounds\n");  in igc_write_nvm_srwr()
244 		ret_val = -IGC_ERR_NVM;  in igc_write_nvm_srwr()
261 			hw_dbg("Shadow RAM write EEWR timed out\n");  in igc_write_nvm_srwr()
270  * igc_write_nvm_srwr_i225 - Write to Shadow RAM using EEWR
282  * If error code is returned, data and Shadow RAM may be inconsistent - buffer
296 		count = (words - i) / IGC_EERD_EEWR_MAX_COUNT > 0 ?  in igc_write_nvm_srwr_i225()
297 			IGC_EERD_EEWR_MAX_COUNT : (words - i);  in igc_write_nvm_srwr_i225()
299 		status = hw->nvm.ops.acquire(hw);  in igc_write_nvm_srwr_i225()
304 		hw->nvm.ops.release(hw);  in igc_write_nvm_srwr_i225()
313  * igc_validate_nvm_checksum_i225 - Validate EEPROM checksum
325 	status = hw->nvm.ops.acquire(hw);  in igc_validate_nvm_checksum_i225()
327 		goto out;  in igc_validate_nvm_checksum_i225()
329 	/* Replace the read function with semaphore grabbing with  in igc_validate_nvm_checksum_i225()
333 	read_op_ptr = hw->nvm.ops.read;  in igc_validate_nvm_checksum_i225()
334 	hw->nvm.ops.read = igc_read_nvm_eerd;  in igc_validate_nvm_checksum_i225()
338 	/* Revert original read operation. */  in igc_validate_nvm_checksum_i225()
339 	hw->nvm.ops.read = read_op_ptr;  in igc_validate_nvm_checksum_i225()
341 	hw->nvm.ops.release(hw);  in igc_validate_nvm_checksum_i225()
343 out:  in igc_validate_nvm_checksum_i225()
348  * igc_pool_flash_update_done_i225 - Pool FLUDONE status
353 	s32 ret_val = -IGC_ERR_NVM;  in igc_pool_flash_update_done_i225()
369  * igc_update_flash_i225 - Commit EEPROM to the flash
378 	if (ret_val == -IGC_ERR_NVM) {  in igc_update_flash_i225()
379 		hw_dbg("Flash update time out\n");  in igc_update_flash_i225()
380 		goto out;  in igc_update_flash_i225()
388 		hw_dbg("Flash update time out\n");  in igc_update_flash_i225()
392 out:  in igc_update_flash_i225()
397  * igc_update_nvm_checksum_i225 - Update EEPROM checksum
410 	/* Read the first word from the EEPROM. If this times out or fails, do  in igc_update_nvm_checksum_i225()
412 	 * EEPROM read fails  in igc_update_nvm_checksum_i225()
416 		hw_dbg("EEPROM read failed\n");  in igc_update_nvm_checksum_i225()
417 		goto out;  in igc_update_nvm_checksum_i225()
420 	ret_val = hw->nvm.ops.acquire(hw);  in igc_update_nvm_checksum_i225()
422 		goto out;  in igc_update_nvm_checksum_i225()
424 	/* Do not use hw->nvm.ops.write, hw->nvm.ops.read  in igc_update_nvm_checksum_i225()
432 			hw->nvm.ops.release(hw);  in igc_update_nvm_checksum_i225()
433 			hw_dbg("NVM Read Error while updating checksum.\n");  in igc_update_nvm_checksum_i225()
434 			goto out;  in igc_update_nvm_checksum_i225()
438 	checksum = (u16)NVM_SUM - checksum;  in igc_update_nvm_checksum_i225()
442 		hw->nvm.ops.release(hw);  in igc_update_nvm_checksum_i225()
444 		goto out;  in igc_update_nvm_checksum_i225()
447 	hw->nvm.ops.release(hw);  in igc_update_nvm_checksum_i225()
451 out:  in igc_update_nvm_checksum_i225()
456  * igc_get_flash_presence_i225 - Check if flash device is detected
472  * igc_init_nvm_params_i225 - Init NVM func ptrs.
477 	struct igc_nvm_info *nvm = &hw->nvm;  in igc_init_nvm_params_i225()
479 	nvm->ops.acquire = igc_acquire_nvm_i225;  in igc_init_nvm_params_i225()
480 	nvm->ops.release = igc_release_nvm_i225;  in igc_init_nvm_params_i225()
484 		nvm->ops.read = igc_read_nvm_srrd_i225;  in igc_init_nvm_params_i225()
485 		nvm->ops.write = igc_write_nvm_srwr_i225;  in igc_init_nvm_params_i225()
486 		nvm->ops.validate = igc_validate_nvm_checksum_i225;  in igc_init_nvm_params_i225()
487 		nvm->ops.update = igc_update_nvm_checksum_i225;  in igc_init_nvm_params_i225()
489 		nvm->ops.read = igc_read_nvm_eerd;  in igc_init_nvm_params_i225()
490 		nvm->ops.write = NULL;  in igc_init_nvm_params_i225()
491 		nvm->ops.validate = NULL;  in igc_init_nvm_params_i225()
492 		nvm->ops.update = NULL;  in igc_init_nvm_params_i225()
498  *  igc_set_eee_i225 - Enable/disable EEE support
515 	if (hw->dev_spec._base.eee_enable) {  in igc_set_eee_i225()
553 /* igc_set_ltr_i225 - Set Latency Tolerance Reporting thresholds
568 		hw->mac.ops.get_speed_and_duplex(hw, &speed, &duplex);  in igc_set_ltr_i225()
573 		if (hw->dev_spec._base.eee_enable &&  in igc_set_ltr_i225()
605 			return -IGC_ERR_CONFIG;  in igc_set_ltr_i225()
620 		ltr_min -= 1;  in igc_set_ltr_i225()
622 		ltr_max -= 1;  in igc_set_ltr_i225()