Lines Matching full:nand

3  * Amlogic Meson Nand Flash Controller Driver
98 /* nand flash controller delay 3 ns */
121 struct nand_chip nand; member
253 static struct meson_nfc_nand_chip *to_meson_nand(struct nand_chip *nand) in to_meson_nand() argument
255 return container_of(nand, struct meson_nfc_nand_chip, nand); in to_meson_nand()
258 static void meson_nfc_select_chip(struct nand_chip *nand, int chip) in meson_nfc_select_chip() argument
260 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_select_chip()
261 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_select_chip()
301 static void meson_nfc_cmd_access(struct nand_chip *nand, int raw, bool dir, in meson_nfc_cmd_access() argument
304 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_cmd_access()
306 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_cmd_access()
310 pagesize = nand->ecc.size; in meson_nfc_cmd_access()
319 pages = len / nand->ecc.size; in meson_nfc_cmd_access()
332 * The Nand flash controller is designed as two stages pipleline - in meson_nfc_drain_cmd()
335 * but the Nand flash controller still has two commands buffered, in meson_nfc_drain_cmd()
367 static u8 *meson_nfc_oob_ptr(struct nand_chip *nand, int i) in meson_nfc_oob_ptr() argument
369 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_oob_ptr()
372 len = nand->ecc.size * (i + 1) + (nand->ecc.bytes + 2) * i; in meson_nfc_oob_ptr()
377 static u8 *meson_nfc_data_ptr(struct nand_chip *nand, int i) in meson_nfc_data_ptr() argument
379 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_data_ptr()
382 temp = nand->ecc.size + nand->ecc.bytes; in meson_nfc_data_ptr()
388 static void meson_nfc_get_data_oob(struct nand_chip *nand, in meson_nfc_get_data_oob() argument
394 oob_len = nand->ecc.bytes + 2; in meson_nfc_get_data_oob()
395 for (i = 0; i < nand->ecc.steps; i++) { in meson_nfc_get_data_oob()
397 dsrc = meson_nfc_data_ptr(nand, i); in meson_nfc_get_data_oob()
398 memcpy(buf, dsrc, nand->ecc.size); in meson_nfc_get_data_oob()
399 buf += nand->ecc.size; in meson_nfc_get_data_oob()
401 osrc = meson_nfc_oob_ptr(nand, i); in meson_nfc_get_data_oob()
407 static void meson_nfc_set_data_oob(struct nand_chip *nand, in meson_nfc_set_data_oob() argument
413 oob_len = nand->ecc.bytes + 2; in meson_nfc_set_data_oob()
414 for (i = 0; i < nand->ecc.steps; i++) { in meson_nfc_set_data_oob()
416 dsrc = meson_nfc_data_ptr(nand, i); in meson_nfc_set_data_oob()
417 memcpy(dsrc, buf, nand->ecc.size); in meson_nfc_set_data_oob()
418 buf += nand->ecc.size; in meson_nfc_set_data_oob()
420 osrc = meson_nfc_oob_ptr(nand, i); in meson_nfc_set_data_oob()
426 static int meson_nfc_wait_no_rb_pin(struct nand_chip *nand, int timeout_ms, in meson_nfc_wait_no_rb_pin() argument
429 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_wait_no_rb_pin()
441 nand_status_op(nand, NULL); in meson_nfc_wait_no_rb_pin()
452 nand_exit_status_op(nand); in meson_nfc_wait_no_rb_pin()
485 static int meson_nfc_queue_rb(struct nand_chip *nand, int timeout_ms, in meson_nfc_queue_rb() argument
488 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_queue_rb()
501 return meson_nfc_wait_no_rb_pin(nand, timeout_ms, in meson_nfc_queue_rb()
508 static void meson_nfc_set_user_byte(struct nand_chip *nand, u8 *oob_buf) in meson_nfc_set_user_byte() argument
510 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_set_user_byte()
514 for (i = 0, count = 0; i < nand->ecc.steps; i++, count += (2 + nand->ecc.bytes)) { in meson_nfc_set_user_byte()
521 static void meson_nfc_get_user_byte(struct nand_chip *nand, u8 *oob_buf) in meson_nfc_get_user_byte() argument
523 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_get_user_byte()
527 for (i = 0, count = 0; i < nand->ecc.steps; i++, count += (2 + nand->ecc.bytes)) { in meson_nfc_get_user_byte()
534 static int meson_nfc_ecc_correct(struct nand_chip *nand, u32 *bitflips, in meson_nfc_ecc_correct() argument
537 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_ecc_correct()
538 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_ecc_correct()
542 for (i = 0; i < nand->ecc.steps; i++) { in meson_nfc_ecc_correct()
550 if ((nand->options & NAND_NEED_SCRAMBLING) && in meson_nfc_ecc_correct()
551 ECC_ZERO_CNT(*info) < nand->ecc.strength) { in meson_nfc_ecc_correct()
563 static int meson_nfc_dma_buffer_setup(struct nand_chip *nand, void *databuf, in meson_nfc_dma_buffer_setup() argument
567 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_setup()
603 static void meson_nfc_dma_buffer_release(struct nand_chip *nand, in meson_nfc_dma_buffer_release() argument
607 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_release()
616 static int meson_nfc_read_buf(struct nand_chip *nand, u8 *buf, int len) in meson_nfc_read_buf() argument
618 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_buf()
627 ret = meson_nfc_dma_buffer_setup(nand, buf, len, info, in meson_nfc_read_buf()
637 meson_nfc_dma_buffer_release(nand, len, PER_INFO_BYTE, DMA_FROM_DEVICE); in meson_nfc_read_buf()
645 static int meson_nfc_write_buf(struct nand_chip *nand, u8 *buf, int len) in meson_nfc_write_buf() argument
647 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_buf()
651 ret = meson_nfc_dma_buffer_setup(nand, buf, len, NULL, in meson_nfc_write_buf()
661 meson_nfc_dma_buffer_release(nand, len, 0, DMA_TO_DEVICE); in meson_nfc_write_buf()
666 static int meson_nfc_rw_cmd_prepare_and_execute(struct nand_chip *nand, in meson_nfc_rw_cmd_prepare_and_execute() argument
670 nand_get_sdr_timings(nand_get_interface_config(nand)); in meson_nfc_rw_cmd_prepare_and_execute()
671 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_rw_cmd_prepare_and_execute()
672 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_rw_cmd_prepare_and_execute()
695 if (nand->options & NAND_ROW_ADDR_3) in meson_nfc_rw_cmd_prepare_and_execute()
711 meson_nfc_queue_rb(nand, PSEC_TO_MSEC(sdr->tR_max), true); in meson_nfc_rw_cmd_prepare_and_execute()
719 static int meson_nfc_write_page_sub(struct nand_chip *nand, in meson_nfc_write_page_sub() argument
723 nand_get_sdr_timings(nand_get_interface_config(nand)); in meson_nfc_write_page_sub()
724 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_write_page_sub()
725 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_write_page_sub()
726 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_page_sub()
731 meson_nfc_select_chip(nand, nand->cur_cs); in meson_nfc_write_page_sub()
734 info_len = nand->ecc.steps * PER_INFO_BYTE; in meson_nfc_write_page_sub()
736 ret = meson_nfc_rw_cmd_prepare_and_execute(nand, page, DIRWRITE); in meson_nfc_write_page_sub()
740 ret = meson_nfc_dma_buffer_setup(nand, meson_chip->data_buf, in meson_nfc_write_page_sub()
746 if (nand->options & NAND_NEED_SCRAMBLING) { in meson_nfc_write_page_sub()
748 meson_nfc_cmd_access(nand, raw, DIRWRITE, in meson_nfc_write_page_sub()
751 meson_nfc_cmd_access(nand, raw, DIRWRITE, in meson_nfc_write_page_sub()
757 meson_nfc_queue_rb(nand, PSEC_TO_MSEC(sdr->tPROG_max), false); in meson_nfc_write_page_sub()
759 meson_nfc_dma_buffer_release(nand, data_len, info_len, DMA_TO_DEVICE); in meson_nfc_write_page_sub()
764 static int meson_nfc_write_page_raw(struct nand_chip *nand, const u8 *buf, in meson_nfc_write_page_raw() argument
767 u8 *oob_buf = nand->oob_poi; in meson_nfc_write_page_raw()
769 meson_nfc_set_data_oob(nand, buf, oob_buf); in meson_nfc_write_page_raw()
771 return meson_nfc_write_page_sub(nand, page, 1); in meson_nfc_write_page_raw()
774 static int meson_nfc_write_page_hwecc(struct nand_chip *nand, in meson_nfc_write_page_hwecc() argument
777 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_write_page_hwecc()
778 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_write_page_hwecc()
779 u8 *oob_buf = nand->oob_poi; in meson_nfc_write_page_hwecc()
782 memset(meson_chip->info_buf, 0, nand->ecc.steps * PER_INFO_BYTE); in meson_nfc_write_page_hwecc()
783 meson_nfc_set_user_byte(nand, oob_buf); in meson_nfc_write_page_hwecc()
785 return meson_nfc_write_page_sub(nand, page, 0); in meson_nfc_write_page_hwecc()
789 struct nand_chip *nand, int raw) in meson_nfc_check_ecc_pages_valid() argument
791 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_check_ecc_pages_valid()
796 neccpages = raw ? 1 : nand->ecc.steps; in meson_nfc_check_ecc_pages_valid()
808 static int meson_nfc_read_page_sub(struct nand_chip *nand, in meson_nfc_read_page_sub() argument
811 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_read_page_sub()
812 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_page_sub()
813 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_read_page_sub()
817 meson_nfc_select_chip(nand, nand->cur_cs); in meson_nfc_read_page_sub()
820 info_len = nand->ecc.steps * PER_INFO_BYTE; in meson_nfc_read_page_sub()
822 ret = meson_nfc_rw_cmd_prepare_and_execute(nand, page, DIRREAD); in meson_nfc_read_page_sub()
826 ret = meson_nfc_dma_buffer_setup(nand, meson_chip->data_buf, in meson_nfc_read_page_sub()
832 if (nand->options & NAND_NEED_SCRAMBLING) { in meson_nfc_read_page_sub()
834 meson_nfc_cmd_access(nand, raw, DIRREAD, in meson_nfc_read_page_sub()
837 meson_nfc_cmd_access(nand, raw, DIRREAD, in meson_nfc_read_page_sub()
842 meson_nfc_check_ecc_pages_valid(nfc, nand, raw); in meson_nfc_read_page_sub()
844 meson_nfc_dma_buffer_release(nand, data_len, info_len, DMA_FROM_DEVICE); in meson_nfc_read_page_sub()
849 static int meson_nfc_read_page_raw(struct nand_chip *nand, u8 *buf, in meson_nfc_read_page_raw() argument
852 u8 *oob_buf = nand->oob_poi; in meson_nfc_read_page_raw()
855 ret = meson_nfc_read_page_sub(nand, page, 1); in meson_nfc_read_page_raw()
859 meson_nfc_get_data_oob(nand, buf, oob_buf); in meson_nfc_read_page_raw()
864 static int meson_nfc_read_page_hwecc(struct nand_chip *nand, u8 *buf, in meson_nfc_read_page_hwecc() argument
867 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nfc_read_page_hwecc()
868 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_read_page_hwecc()
869 struct nand_ecc_ctrl *ecc = &nand->ecc; in meson_nfc_read_page_hwecc()
872 u8 *oob_buf = nand->oob_poi; in meson_nfc_read_page_hwecc()
875 ret = meson_nfc_read_page_sub(nand, page, 0); in meson_nfc_read_page_hwecc()
879 meson_nfc_get_user_byte(nand, oob_buf); in meson_nfc_read_page_hwecc()
880 ret = meson_nfc_ecc_correct(nand, &bitflips, &correct_bitmap); in meson_nfc_read_page_hwecc()
886 if ((nand->options & NAND_NEED_SCRAMBLING) || !buf) { in meson_nfc_read_page_hwecc()
890 ret = meson_nfc_read_page_raw(nand, buf, 0, page); in meson_nfc_read_page_hwecc()
894 for (i = 0; i < nand->ecc.steps ; i++) { in meson_nfc_read_page_hwecc()
896 u8 *oob = nand->oob_poi + i * (ecc->bytes + 2); in meson_nfc_read_page_hwecc()
918 static int meson_nfc_read_oob_raw(struct nand_chip *nand, int page) in meson_nfc_read_oob_raw() argument
920 return meson_nfc_read_page_raw(nand, NULL, 1, page); in meson_nfc_read_oob_raw()
923 static int meson_nfc_read_oob(struct nand_chip *nand, int page) in meson_nfc_read_oob() argument
925 return meson_nfc_read_page_hwecc(nand, NULL, 1, page); in meson_nfc_read_oob()
1015 static int meson_nfc_exec_op(struct nand_chip *nand, in meson_nfc_exec_op() argument
1018 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_exec_op()
1019 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_exec_op()
1026 err = meson_nfc_check_op(nand, op); in meson_nfc_exec_op()
1033 meson_nfc_select_chip(nand, op->cs); in meson_nfc_exec_op()
1060 meson_nfc_read_buf(nand, buf, instr->ctx.data.len); in meson_nfc_exec_op()
1068 meson_nfc_write_buf(nand, buf, instr->ctx.data.len); in meson_nfc_exec_op()
1073 meson_nfc_queue_rb(nand, instr->ctx.waitrdy.timeout_ms, in meson_nfc_exec_op()
1087 struct nand_chip *nand = mtd_to_nand(mtd); in meson_ooblayout_ecc() local
1089 if (section >= nand->ecc.steps) in meson_ooblayout_ecc()
1092 oobregion->offset = 2 + (section * (2 + nand->ecc.bytes)); in meson_ooblayout_ecc()
1093 oobregion->length = nand->ecc.bytes; in meson_ooblayout_ecc()
1101 struct nand_chip *nand = mtd_to_nand(mtd); in meson_ooblayout_free() local
1103 if (section >= nand->ecc.steps) in meson_ooblayout_free()
1106 oobregion->offset = section * (2 + nand->ecc.bytes); in meson_ooblayout_free()
1202 static void meson_nfc_free_buffer(struct nand_chip *nand) in meson_nfc_free_buffer() argument
1204 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_free_buffer()
1210 static int meson_chip_buffer_init(struct nand_chip *nand) in meson_chip_buffer_init() argument
1212 struct mtd_info *mtd = nand_to_mtd(nand); in meson_chip_buffer_init()
1213 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_chip_buffer_init()
1216 nsectors = mtd->writesize / nand->ecc.size; in meson_chip_buffer_init()
1235 int meson_nfc_setup_interface(struct nand_chip *nand, int csline, in meson_nfc_setup_interface() argument
1238 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nfc_setup_interface()
1277 static int meson_nand_bch_mode(struct nand_chip *nand) in meson_nand_bch_mode() argument
1279 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nand_bch_mode()
1282 if (nand->ecc.strength > 60 || nand->ecc.strength < 8) in meson_nand_bch_mode()
1286 if (meson_ecc[i].strength == nand->ecc.strength && in meson_nand_bch_mode()
1287 meson_ecc[i].size == nand->ecc.size) { in meson_nand_bch_mode()
1296 static void meson_nand_detach_chip(struct nand_chip *nand) in meson_nand_detach_chip() argument
1298 meson_nfc_free_buffer(nand); in meson_nand_detach_chip()
1301 static int meson_nand_attach_chip(struct nand_chip *nand) in meson_nand_attach_chip() argument
1303 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nand_attach_chip()
1304 struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand); in meson_nand_attach_chip()
1305 struct mtd_info *mtd = nand_to_mtd(nand); in meson_nand_attach_chip()
1311 "%s:nand%d", in meson_nand_attach_chip()
1325 if (nand->bbt_options & NAND_BBT_USE_FLASH) in meson_nand_attach_chip()
1326 nand->bbt_options |= NAND_BBT_NO_OOB; in meson_nand_attach_chip()
1328 nand->options |= NAND_NO_SUBPAGE_WRITE; in meson_nand_attach_chip()
1330 ret = nand_ecc_choose_conf(nand, nfc->data->ecc_caps, in meson_nand_attach_chip()
1339 ret = meson_nand_bch_mode(nand); in meson_nand_attach_chip()
1343 nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; in meson_nand_attach_chip()
1344 nand->ecc.write_page_raw = meson_nfc_write_page_raw; in meson_nand_attach_chip()
1345 nand->ecc.write_page = meson_nfc_write_page_hwecc; in meson_nand_attach_chip()
1346 nand->ecc.write_oob_raw = nand_write_oob_std; in meson_nand_attach_chip()
1347 nand->ecc.write_oob = nand_write_oob_std; in meson_nand_attach_chip()
1349 nand->ecc.read_page_raw = meson_nfc_read_page_raw; in meson_nand_attach_chip()
1350 nand->ecc.read_page = meson_nfc_read_page_hwecc; in meson_nand_attach_chip()
1351 nand->ecc.read_oob_raw = meson_nfc_read_oob_raw; in meson_nand_attach_chip()
1352 nand->ecc.read_oob = meson_nfc_read_oob; in meson_nand_attach_chip()
1354 if (nand->options & NAND_BUSWIDTH_16) { in meson_nand_attach_chip()
1358 ret = meson_chip_buffer_init(nand); in meson_nand_attach_chip()
1377 struct nand_chip *nand; in meson_nfc_nand_chip_init() local
1410 nand = &meson_chip->nand; in meson_nfc_nand_chip_init()
1411 nand->controller = &nfc->controller; in meson_nfc_nand_chip_init()
1412 nand->controller->ops = &meson_nand_controller_ops; in meson_nfc_nand_chip_init()
1413 nand_set_flash_node(nand, np); in meson_nfc_nand_chip_init()
1414 nand_set_controller_data(nand, nfc); in meson_nfc_nand_chip_init()
1416 nand->options |= NAND_USES_DMA; in meson_nfc_nand_chip_init()
1417 mtd = nand_to_mtd(nand); in meson_nfc_nand_chip_init()
1421 ret = of_property_read_u32(np, "nand-rb", &nand_rb_val); in meson_nfc_nand_chip_init()
1430 ret = nand_scan(nand, nsels); in meson_nfc_nand_chip_init()
1437 nand_cleanup(nand); in meson_nfc_nand_chip_init()
1454 mtd = nand_to_mtd(&meson_chip->nand); in meson_nfc_nand_chip_cleanup()
1457 nand_cleanup(&meson_chip->nand); in meson_nfc_nand_chip_cleanup()
1551 dev_err(dev, "failed to initialize NAND clock\n"); in meson_nfc_probe()
1573 dev_err(dev, "failed to init NAND chips\n"); in meson_nfc_probe()
1596 .name = "meson-nand",
1604 MODULE_DESCRIPTION("Amlogic's Meson NAND Flash Controller driver");