Lines Matching full:nand
3 * Amlogic Meson Nand Flash Controller Driver
92 /* nand flash controller delay 3 ns */
110 struct nand_chip nand; member
219 static struct meson_nfc_nand_chip *to_meson_nand(struct nand_chip *nand) in to_meson_nand() argument
221 return container_of(nand, struct meson_nfc_nand_chip, nand); in to_meson_nand()
224 static void meson_nfc_select_chip(struct nand_chip *nand, int chip) in meson_nfc_select_chip() argument
226 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_select_chip()
227 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_select_chip()
267 static void meson_nfc_cmd_access(struct nand_chip *nand, int raw, bool dir, in meson_nfc_cmd_access() argument
270 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_cmd_access()
272 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_cmd_access()
276 pagesize = nand->ecc.size; in meson_nfc_cmd_access()
285 pages = len / nand->ecc.size; in meson_nfc_cmd_access()
298 * The Nand flash controller is designed as two stages pipleline - in meson_nfc_drain_cmd()
301 * but the Nand flash controller still has two commands buffered, in meson_nfc_drain_cmd()
333 static u8 *meson_nfc_oob_ptr(struct nand_chip *nand, int i) in meson_nfc_oob_ptr() argument
335 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_oob_ptr()
338 len = nand->ecc.size * (i + 1) + (nand->ecc.bytes + 2) * i; in meson_nfc_oob_ptr()
343 static u8 *meson_nfc_data_ptr(struct nand_chip *nand, int i) in meson_nfc_data_ptr() argument
345 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_data_ptr()
348 temp = nand->ecc.size + nand->ecc.bytes; in meson_nfc_data_ptr()
354 static void meson_nfc_get_data_oob(struct nand_chip *nand, in meson_nfc_get_data_oob() argument
360 oob_len = nand->ecc.bytes + 2; in meson_nfc_get_data_oob()
361 for (i = 0; i < nand->ecc.steps; i++) { in meson_nfc_get_data_oob()
363 dsrc = meson_nfc_data_ptr(nand, i); in meson_nfc_get_data_oob()
364 memcpy(buf, dsrc, nand->ecc.size); in meson_nfc_get_data_oob()
365 buf += nand->ecc.size; in meson_nfc_get_data_oob()
367 osrc = meson_nfc_oob_ptr(nand, i); in meson_nfc_get_data_oob()
373 static void meson_nfc_set_data_oob(struct nand_chip *nand, in meson_nfc_set_data_oob() argument
379 oob_len = nand->ecc.bytes + 2; in meson_nfc_set_data_oob()
380 for (i = 0; i < nand->ecc.steps; i++) { in meson_nfc_set_data_oob()
382 dsrc = meson_nfc_data_ptr(nand, i); in meson_nfc_set_data_oob()
383 memcpy(dsrc, buf, nand->ecc.size); in meson_nfc_set_data_oob()
384 buf += nand->ecc.size; in meson_nfc_set_data_oob()
386 osrc = meson_nfc_oob_ptr(nand, i); in meson_nfc_set_data_oob()
420 static void meson_nfc_set_user_byte(struct nand_chip *nand, u8 *oob_buf) in meson_nfc_set_user_byte() argument
422 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_set_user_byte()
426 for (i = 0, count = 0; i < nand->ecc.steps; i++, count += 2) { in meson_nfc_set_user_byte()
433 static void meson_nfc_get_user_byte(struct nand_chip *nand, u8 *oob_buf) in meson_nfc_get_user_byte() argument
435 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_get_user_byte()
439 for (i = 0, count = 0; i < nand->ecc.steps; i++, count += 2) { in meson_nfc_get_user_byte()
446 static int meson_nfc_ecc_correct(struct nand_chip *nand, u32 *bitflips, in meson_nfc_ecc_correct() argument
449 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_ecc_correct()
450 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_ecc_correct()
454 for (i = 0; i < nand->ecc.steps; i++) { in meson_nfc_ecc_correct()
462 if ((nand->options & NAND_NEED_SCRAMBLING) && in meson_nfc_ecc_correct()
463 ECC_ZERO_CNT(*info) < nand->ecc.strength) { in meson_nfc_ecc_correct()
475 static int meson_nfc_dma_buffer_setup(struct nand_chip *nand, void *databuf, in meson_nfc_dma_buffer_setup() argument
479 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_setup()
515 static void meson_nfc_dma_buffer_release(struct nand_chip *nand, in meson_nfc_dma_buffer_release() argument
519 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_release()
528 static int meson_nfc_read_buf(struct nand_chip *nand, u8 *buf, int len) in meson_nfc_read_buf() argument
530 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_buf()
539 ret = meson_nfc_dma_buffer_setup(nand, buf, len, info, in meson_nfc_read_buf()
549 meson_nfc_dma_buffer_release(nand, len, PER_INFO_BYTE, DMA_FROM_DEVICE); in meson_nfc_read_buf()
557 static int meson_nfc_write_buf(struct nand_chip *nand, u8 *buf, int len) in meson_nfc_write_buf() argument
559 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_buf()
563 ret = meson_nfc_dma_buffer_setup(nand, buf, len, NULL, in meson_nfc_write_buf()
573 meson_nfc_dma_buffer_release(nand, len, 0, DMA_TO_DEVICE); in meson_nfc_write_buf()
578 static int meson_nfc_rw_cmd_prepare_and_execute(struct nand_chip *nand, in meson_nfc_rw_cmd_prepare_and_execute() argument
582 nand_get_sdr_timings(nand_get_interface_config(nand)); in meson_nfc_rw_cmd_prepare_and_execute()
583 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_rw_cmd_prepare_and_execute()
584 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_rw_cmd_prepare_and_execute()
607 if (nand->options & NAND_ROW_ADDR_3) in meson_nfc_rw_cmd_prepare_and_execute()
631 static int meson_nfc_write_page_sub(struct nand_chip *nand, in meson_nfc_write_page_sub() argument
635 nand_get_sdr_timings(nand_get_interface_config(nand)); in meson_nfc_write_page_sub()
636 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_write_page_sub()
637 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_write_page_sub()
638 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_page_sub()
643 meson_nfc_select_chip(nand, nand->cur_cs); in meson_nfc_write_page_sub()
646 info_len = nand->ecc.steps * PER_INFO_BYTE; in meson_nfc_write_page_sub()
648 ret = meson_nfc_rw_cmd_prepare_and_execute(nand, page, DIRWRITE); in meson_nfc_write_page_sub()
652 ret = meson_nfc_dma_buffer_setup(nand, meson_chip->data_buf, in meson_nfc_write_page_sub()
658 if (nand->options & NAND_NEED_SCRAMBLING) { in meson_nfc_write_page_sub()
660 meson_nfc_cmd_access(nand, raw, DIRWRITE, in meson_nfc_write_page_sub()
663 meson_nfc_cmd_access(nand, raw, DIRWRITE, in meson_nfc_write_page_sub()
671 meson_nfc_dma_buffer_release(nand, data_len, info_len, DMA_TO_DEVICE); in meson_nfc_write_page_sub()
676 static int meson_nfc_write_page_raw(struct nand_chip *nand, const u8 *buf, in meson_nfc_write_page_raw() argument
679 u8 *oob_buf = nand->oob_poi; in meson_nfc_write_page_raw()
681 meson_nfc_set_data_oob(nand, buf, oob_buf); in meson_nfc_write_page_raw()
683 return meson_nfc_write_page_sub(nand, page, 1); in meson_nfc_write_page_raw()
686 static int meson_nfc_write_page_hwecc(struct nand_chip *nand, in meson_nfc_write_page_hwecc() argument
689 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_write_page_hwecc()
690 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_write_page_hwecc()
691 u8 *oob_buf = nand->oob_poi; in meson_nfc_write_page_hwecc()
694 memset(meson_chip->info_buf, 0, nand->ecc.steps * PER_INFO_BYTE); in meson_nfc_write_page_hwecc()
695 meson_nfc_set_user_byte(nand, oob_buf); in meson_nfc_write_page_hwecc()
697 return meson_nfc_write_page_sub(nand, page, 0); in meson_nfc_write_page_hwecc()
701 struct nand_chip *nand, int raw) in meson_nfc_check_ecc_pages_valid() argument
703 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_check_ecc_pages_valid()
708 neccpages = raw ? 1 : nand->ecc.steps; in meson_nfc_check_ecc_pages_valid()
720 static int meson_nfc_read_page_sub(struct nand_chip *nand, in meson_nfc_read_page_sub() argument
723 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_read_page_sub()
724 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_page_sub()
725 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_read_page_sub()
729 meson_nfc_select_chip(nand, nand->cur_cs); in meson_nfc_read_page_sub()
732 info_len = nand->ecc.steps * PER_INFO_BYTE; in meson_nfc_read_page_sub()
734 ret = meson_nfc_rw_cmd_prepare_and_execute(nand, page, DIRREAD); in meson_nfc_read_page_sub()
738 ret = meson_nfc_dma_buffer_setup(nand, meson_chip->data_buf, in meson_nfc_read_page_sub()
744 if (nand->options & NAND_NEED_SCRAMBLING) { in meson_nfc_read_page_sub()
746 meson_nfc_cmd_access(nand, raw, DIRREAD, in meson_nfc_read_page_sub()
749 meson_nfc_cmd_access(nand, raw, DIRREAD, in meson_nfc_read_page_sub()
754 meson_nfc_check_ecc_pages_valid(nfc, nand, raw); in meson_nfc_read_page_sub()
756 meson_nfc_dma_buffer_release(nand, data_len, info_len, DMA_FROM_DEVICE); in meson_nfc_read_page_sub()
761 static int meson_nfc_read_page_raw(struct nand_chip *nand, u8 *buf, in meson_nfc_read_page_raw() argument
764 u8 *oob_buf = nand->oob_poi; in meson_nfc_read_page_raw()
767 ret = meson_nfc_read_page_sub(nand, page, 1); in meson_nfc_read_page_raw()
771 meson_nfc_get_data_oob(nand, buf, oob_buf); in meson_nfc_read_page_raw()
776 static int meson_nfc_read_page_hwecc(struct nand_chip *nand, u8 *buf, in meson_nfc_read_page_hwecc() argument
779 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_read_page_hwecc()
780 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_read_page_hwecc()
781 struct nand_ecc_ctrl *ecc = &nand->ecc; in meson_nfc_read_page_hwecc()
784 u8 *oob_buf = nand->oob_poi; in meson_nfc_read_page_hwecc()
787 ret = meson_nfc_read_page_sub(nand, page, 0); in meson_nfc_read_page_hwecc()
791 meson_nfc_get_user_byte(nand, oob_buf); in meson_nfc_read_page_hwecc()
792 ret = meson_nfc_ecc_correct(nand, &bitflips, &correct_bitmap); in meson_nfc_read_page_hwecc()
798 if ((nand->options & NAND_NEED_SCRAMBLING) || !buf) { in meson_nfc_read_page_hwecc()
802 ret = meson_nfc_read_page_raw(nand, buf, 0, page); in meson_nfc_read_page_hwecc()
806 for (i = 0; i < nand->ecc.steps ; i++) { in meson_nfc_read_page_hwecc()
808 u8 *oob = nand->oob_poi + i * (ecc->bytes + 2); in meson_nfc_read_page_hwecc()
830 static int meson_nfc_read_oob_raw(struct nand_chip *nand, int page) in meson_nfc_read_oob_raw() argument
832 return meson_nfc_read_page_raw(nand, NULL, 1, page); in meson_nfc_read_oob_raw()
835 static int meson_nfc_read_oob(struct nand_chip *nand, int page) in meson_nfc_read_oob() argument
837 return meson_nfc_read_page_hwecc(nand, NULL, 1, page); in meson_nfc_read_oob()
902 static int meson_nfc_exec_op(struct nand_chip *nand, in meson_nfc_exec_op() argument
905 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_exec_op()
906 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_exec_op()
915 meson_nfc_select_chip(nand, op->cs); in meson_nfc_exec_op()
942 meson_nfc_read_buf(nand, buf, instr->ctx.data.len); in meson_nfc_exec_op()
950 meson_nfc_write_buf(nand, buf, instr->ctx.data.len); in meson_nfc_exec_op()
968 struct nand_chip *nand = mtd_to_nand(mtd); in meson_ooblayout_ecc() local
970 if (section >= nand->ecc.steps) in meson_ooblayout_ecc()
973 oobregion->offset = 2 + (section * (2 + nand->ecc.bytes)); in meson_ooblayout_ecc()
974 oobregion->length = nand->ecc.bytes; in meson_ooblayout_ecc()
982 struct nand_chip *nand = mtd_to_nand(mtd); in meson_ooblayout_free() local
984 if (section >= nand->ecc.steps) in meson_ooblayout_free()
987 oobregion->offset = section * (2 + nand->ecc.bytes); in meson_ooblayout_free()
1080 static void meson_nfc_free_buffer(struct nand_chip *nand) in meson_nfc_free_buffer() argument
1082 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_free_buffer()
1088 static int meson_chip_buffer_init(struct nand_chip *nand) in meson_chip_buffer_init() argument
1090 struct mtd_info *mtd = nand_to_mtd(nand); in meson_chip_buffer_init()
1091 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_chip_buffer_init()
1094 nsectors = mtd->writesize / nand->ecc.size; in meson_chip_buffer_init()
1113 int meson_nfc_setup_interface(struct nand_chip *nand, int csline, in meson_nfc_setup_interface() argument
1116 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_setup_interface()
1155 static int meson_nand_bch_mode(struct nand_chip *nand) in meson_nand_bch_mode() argument
1157 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nand_bch_mode()
1160 if (nand->ecc.strength > 60 || nand->ecc.strength < 8) in meson_nand_bch_mode()
1164 if (meson_ecc[i].strength == nand->ecc.strength) { in meson_nand_bch_mode()
1173 static void meson_nand_detach_chip(struct nand_chip *nand) in meson_nand_detach_chip() argument
1175 meson_nfc_free_buffer(nand); in meson_nand_detach_chip()
1178 static int meson_nand_attach_chip(struct nand_chip *nand) in meson_nand_attach_chip() argument
1180 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nand_attach_chip()
1181 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nand_attach_chip()
1182 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nand_attach_chip()
1187 "%s:nand%d", in meson_nand_attach_chip()
1194 if (nand->bbt_options & NAND_BBT_USE_FLASH) in meson_nand_attach_chip()
1195 nand->bbt_options |= NAND_BBT_NO_OOB; in meson_nand_attach_chip()
1197 nand->options |= NAND_NO_SUBPAGE_WRITE; in meson_nand_attach_chip()
1199 ret = nand_ecc_choose_conf(nand, nfc->data->ecc_caps, in meson_nand_attach_chip()
1208 ret = meson_nand_bch_mode(nand); in meson_nand_attach_chip()
1212 nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; in meson_nand_attach_chip()
1213 nand->ecc.write_page_raw = meson_nfc_write_page_raw; in meson_nand_attach_chip()
1214 nand->ecc.write_page = meson_nfc_write_page_hwecc; in meson_nand_attach_chip()
1215 nand->ecc.write_oob_raw = nand_write_oob_std; in meson_nand_attach_chip()
1216 nand->ecc.write_oob = nand_write_oob_std; in meson_nand_attach_chip()
1218 nand->ecc.read_page_raw = meson_nfc_read_page_raw; in meson_nand_attach_chip()
1219 nand->ecc.read_page = meson_nfc_read_page_hwecc; in meson_nand_attach_chip()
1220 nand->ecc.read_oob_raw = meson_nfc_read_oob_raw; in meson_nand_attach_chip()
1221 nand->ecc.read_oob = meson_nfc_read_oob; in meson_nand_attach_chip()
1223 if (nand->options & NAND_BUSWIDTH_16) { in meson_nand_attach_chip()
1227 ret = meson_chip_buffer_init(nand); in meson_nand_attach_chip()
1246 struct nand_chip *nand; in meson_nfc_nand_chip_init() local
1278 nand = &meson_chip->nand; in meson_nfc_nand_chip_init()
1279 nand->controller = &nfc->controller; in meson_nfc_nand_chip_init()
1280 nand->controller->ops = &meson_nand_controller_ops; in meson_nfc_nand_chip_init()
1281 nand_set_flash_node(nand, np); in meson_nfc_nand_chip_init()
1282 nand_set_controller_data(nand, nfc); in meson_nfc_nand_chip_init()
1284 nand->options |= NAND_USES_DMA; in meson_nfc_nand_chip_init()
1285 mtd = nand_to_mtd(nand); in meson_nfc_nand_chip_init()
1289 ret = nand_scan(nand, nsels); in meson_nfc_nand_chip_init()
1296 nand_cleanup(nand); in meson_nfc_nand_chip_init()
1314 mtd = nand_to_mtd(&meson_chip->nand); in meson_nfc_nand_chip_cleanup()
1319 nand_cleanup(&meson_chip->nand); in meson_nfc_nand_chip_cleanup()
1421 dev_err(dev, "failed to initialize NAND clock\n"); in meson_nfc_probe()
1443 dev_err(dev, "failed to init NAND chips\n"); in meson_nfc_probe()
1473 .name = "meson-nand",
1481 MODULE_DESCRIPTION("Amlogic's Meson NAND Flash Controller driver");