127 /* ----------------------- oob helpers -------------------------------------- */
148 static int sm_read_lba(struct sm_oob *oob)  in sm_read_lba()  argument
157 	if (!memcmp(oob, erased_pattern, SM_OOB_SIZE))  in sm_read_lba()
161 	lba_test = *(uint16_t *)oob->lba_copy1 ^ *(uint16_t*)oob->lba_copy2;  in sm_read_lba()
166 	lba = sm_get_lba(oob->lba_copy1);  in sm_read_lba()
169 		lba = sm_get_lba(oob->lba_copy2);  in sm_read_lba()
174 static void sm_write_lba(struct sm_oob *oob, uint16_t lba)  in sm_write_lba()  argument
186 	oob->lba_copy1[0] = oob->lba_copy2[0] = tmp[0];  in sm_write_lba()
187 	oob->lba_copy1[1] = oob->lba_copy2[1] = tmp[1];  in sm_write_lba()
217 static int sm_correct_sector(uint8_t *buffer, struct sm_oob *oob)  in sm_correct_sector()  argument
223 	if (ecc_sw_hamming_correct(buffer, ecc, oob->ecc1, SM_SMALL_PAGE,  in sm_correct_sector()
230 	if (ecc_sw_hamming_correct(buffer, ecc, oob->ecc2, SM_SMALL_PAGE,  in sm_correct_sector()
236 /* Reads a sector + oob*/
239 			  uint8_t *buffer, struct sm_oob *oob)  in sm_read_sector()  argument
254 	/* User might not need the oob, but we do for data verification */  in sm_read_sector()
255 	if (!oob)  in sm_read_sector()
256 		oob = &tmp_oob;  in sm_read_sector()
261 	ops.oobbuf = (void *)oob;  in sm_read_sector()
279 	/* Unfortunately, oob read will _always_ succeed,  in sm_read_sector()
291 	/* Do a basic test on the oob, to guard against returned garbage */  in sm_read_sector()
292 	if (oob->reserved != 0xFFFFFFFF && !is_power_of_2(~oob->reserved))  in sm_read_sector()
303 	if (!sm_sector_valid(oob)) {  in sm_read_sector()
311 		(ftl->smallpagenand && sm_correct_sector(buffer, oob))) {  in sm_read_sector()
324 			   uint8_t *buffer, struct sm_oob *oob)  in sm_write_sector()  argument
345 	ops.oobbuf = (void *)oob;  in sm_write_sector()
374 	struct sm_oob oob;  in sm_write_block()  local
378 	/* Initialize the oob with requested values */  in sm_write_block()
379 	memset(&oob, 0xFF, SM_OOB_SIZE);  in sm_write_block()
380 	sm_write_lba(&oob, lba);  in sm_write_block()
388 		oob.data_status = 0xFF;  in sm_write_block()
396 			oob.data_status = 0;  in sm_write_block()
401 						 SM_SMALL_PAGE, oob.ecc1,  in sm_write_block()
405 						 SM_SMALL_PAGE, oob.ecc2,  in sm_write_block()
409 							buf + boffset, &oob))  in sm_write_block()
438 	struct sm_oob oob;  in sm_mark_block_bad()  local
441 	memset(&oob, 0xFF, SM_OOB_SIZE);  in sm_mark_block_bad()
442 	oob.block_status = 0xF0;  in sm_mark_block_bad()
457 		sm_write_sector(ftl, zone, block, boffset, NULL, &oob);  in sm_mark_block_bad()
504 	struct sm_oob oob;  in sm_check_block()  local
518 		if (sm_read_sector(ftl, zone, block, boffset, NULL, &oob))  in sm_check_block()
521 		test_lba = sm_read_lba(&oob);  in sm_check_block()
625 	/* Test for proper write,erase and oob sizes */  in sm_get_media_info()
638 	/* We use OOB */  in sm_get_media_info()
662 	struct sm_oob oob;  in sm_read_cis()  local
665 		0, ftl->cis_block, ftl->cis_boffset, ftl->cis_buffer, &oob))  in sm_read_cis()
668 	if (!sm_sector_valid(&oob) || !sm_block_valid(&oob))  in sm_read_cis()
682 	struct sm_oob oob;  in sm_find_cis()  local
690 		if (sm_read_sector(ftl, 0, block, 0, NULL, &oob))  in sm_find_cis()
693 		if (!sm_block_valid(&oob))  in sm_find_cis()
706 		if (sm_read_sector(ftl, 0, block, boffset, NULL, &oob))  in sm_find_cis()
709 		if (!sm_sector_valid(&oob))  in sm_find_cis()
755 	struct sm_oob oob;  in sm_init_zone()  local
784 		/* Read the oob of first sector */  in sm_init_zone()
785 		if (sm_read_sector(ftl, zone_num, block, 0, NULL, &oob)) {  in sm_init_zone()
794 		if (sm_block_erased(&oob)) {  in sm_init_zone()
805 		if (!sm_block_valid(&oob)) {  in sm_init_zone()
811 		lba = sm_read_lba(&oob);  in sm_init_zone()