diff options
Diffstat (limited to 'target/linux/ramips/patches-3.10/0250-nand-7620.patch')
-rw-r--r-- | target/linux/ramips/patches-3.10/0250-nand-7620.patch | 2409 |
1 files changed, 0 insertions, 2409 deletions
diff --git a/target/linux/ramips/patches-3.10/0250-nand-7620.patch b/target/linux/ramips/patches-3.10/0250-nand-7620.patch deleted file mode 100644 index 248e82c29e..0000000000 --- a/target/linux/ramips/patches-3.10/0250-nand-7620.patch +++ /dev/null @@ -1,2409 +0,0 @@ -From a5fc495c8dc199ffa997d43331693a5b7ee07270 Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Sun, 17 Nov 2013 17:41:46 +0100 -Subject: [PATCH] ralink: add mt7620 nand driver - -Signed-off-by: John Crispin <blogic@openwrt.org> ---- - drivers/mtd/maps/Kconfig | 4 + - drivers/mtd/maps/Makefile | 2 + - drivers/mtd/maps/ralink_nand.c | 2136 ++++++++++++++++++++++++++++++++++++++++ - drivers/mtd/maps/ralink_nand.h | 232 +++++ - drivers/mtd/nand/Makefile | 2 +- - 5 files changed, 2375 insertions(+), 1 deletion(-) - create mode 100644 drivers/mtd/maps/ralink_nand.c - create mode 100644 drivers/mtd/maps/ralink_nand.h - ---- a/drivers/mtd/maps/Kconfig -+++ b/drivers/mtd/maps/Kconfig -@@ -424,4 +424,8 @@ config MTD_LATCH_ADDR - - If compiled as a module, it will be called latch-addr-flash. - -+config MTD_NAND_MT7620 -+ tristate "Support for NAND on Mediatek MT7620" -+ depends on RALINK && SOC_MT7620 -+ - endmenu ---- a/drivers/mtd/maps/Makefile -+++ b/drivers/mtd/maps/Makefile -@@ -46,3 +46,5 @@ obj-$(CONFIG_MTD_VMU) += vmu-flash.o - obj-$(CONFIG_MTD_GPIO_ADDR) += gpio-addr-flash.o - obj-$(CONFIG_MTD_LATCH_ADDR) += latch-addr-flash.o - obj-$(CONFIG_MTD_LANTIQ) += lantiq-flash.o -+obj-$(CONFIG_MTD_NAND_MT7620) += ralink_nand.o -+ ---- /dev/null -+++ b/drivers/mtd/maps/ralink_nand.c -@@ -0,0 +1,2136 @@ -+#define DEBUG -+#include <linux/device.h> -+#undef DEBUG -+#include <linux/slab.h> -+#include <linux/mtd/mtd.h> -+#include <linux/delay.h> -+#include <linux/module.h> -+#include <linux/interrupt.h> -+#include <linux/dma-mapping.h> -+#include <linux/mtd/partitions.h> -+#include <asm/io.h> -+#include <linux/delay.h> -+#include <linux/sched.h> -+#include <linux/of.h> -+#include <linux/platform_device.h> -+ -+#include "ralink_nand.h" -+#ifdef RANDOM_GEN_BAD_BLOCK -+#include <linux/random.h> -+#endif -+ -+#define LARGE_MTD_BOOT_PART_SIZE (CFG_BLOCKSIZE<<2) -+#define LARGE_MTD_CONFIG_PART_SIZE (CFG_BLOCKSIZE<<2) -+#define LARGE_MTD_FACTORY_PART_SIZE (CFG_BLOCKSIZE<<1) -+ -+ -+#define BLOCK_ALIGNED(a) ((a) & (CFG_BLOCKSIZE - 1)) -+ -+#define READ_STATUS_RETRY 1000 -+ -+struct mtd_info *ranfc_mtd = NULL; -+ -+int skipbbt = 0; -+int ranfc_debug = 1; -+static int ranfc_bbt = 1; -+#if defined (WORKAROUND_RX_BUF_OV) -+static int ranfc_verify = 1; -+#endif -+static u32 nand_addrlen; -+ -+#if 0 -+module_param(ranfc_debug, int, 0644); -+module_param(ranfc_bbt, int, 0644); -+module_param(ranfc_verify, int, 0644); -+#endif -+ -+#if 0 -+#define ra_dbg(args...) do { if (ranfc_debug) printk(args); } while(0) -+#else -+#define ra_dbg(args...) -+#endif -+ -+#define CLEAR_INT_STATUS() ra_outl(NFC_INT_ST, ra_inl(NFC_INT_ST)) -+#define NFC_TRANS_DONE() (ra_inl(NFC_INT_ST) & INT_ST_ND_DONE) -+ -+int is_nand_page_2048 = 0; -+const unsigned int nand_size_map[2][3] = {{25, 30, 30}, {20, 27, 30}}; -+ -+static int nfc_wait_ready(int snooze_ms); -+ -+static const char * const mtk_probe_types[] = { "cmdlinepart", "ofpart", NULL }; -+ -+/** -+ * reset nand chip -+ */ -+static int nfc_chip_reset(void) -+{ -+ int status; -+ -+ //ra_dbg("%s:\n", __func__); -+ -+ // reset nand flash -+ ra_outl(NFC_CMD1, 0x0); -+ ra_outl(NFC_CMD2, 0xff); -+ ra_outl(NFC_ADDR, 0x0); -+ ra_outl(NFC_CONF, 0x0411); -+ -+ status = nfc_wait_ready(5); //erase wait 5us -+ if (status & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ } -+ -+ return (int)(status & NAND_STATUS_FAIL); -+ -+} -+ -+ -+ -+/** -+ * clear NFC and flash chip. -+ */ -+static int nfc_all_reset(void) -+{ -+ int retry; -+ -+ ra_dbg("%s: \n", __func__); -+ -+ // reset controller -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x02); //clear data buffer -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) & ~0x02); //clear data buffer -+ -+ CLEAR_INT_STATUS(); -+ -+ retry = READ_STATUS_RETRY; -+ while ((ra_inl(NFC_INT_ST) & 0x02) != 0x02 && retry--); -+ if (retry <= 0) { -+ printk("nfc_all_reset: clean buffer fail \n"); -+ return -1; -+ } -+ -+ retry = READ_STATUS_RETRY; -+ while ((ra_inl(NFC_STATUS) & 0x1) != 0x0 && retry--) { //fixme, controller is busy ? -+ udelay(1); -+ } -+ -+ nfc_chip_reset(); -+ -+ return 0; -+} -+ -+/** NOTICE: only called by nfc_wait_ready(). -+ * @return -1, nfc can not get transction done -+ * @return 0, ok. -+ */ -+static int _nfc_read_status(char *status) -+{ -+ unsigned long cmd1, conf; -+ int int_st, nfc_st; -+ int retry; -+ -+ cmd1 = 0x70; -+ conf = 0x000101 | (1 << 20); -+ -+ //fixme, should we check nfc status? -+ CLEAR_INT_STATUS(); -+ -+ ra_outl(NFC_CMD1, cmd1); -+ ra_outl(NFC_CONF, conf); -+ -+ /* FIXME, -+ * 1. since we have no wired ready signal, directly -+ * calling this function is not gurantee to read right status under ready state. -+ * 2. the other side, we can not determine how long to become ready, this timeout retry is nonsense. -+ * 3. SUGGESTION: call nfc_read_status() from nfc_wait_ready(), -+ * that is aware about caller (in sementics) and has snooze plused nfc ND_DONE. -+ */ -+ retry = READ_STATUS_RETRY; -+ do { -+ nfc_st = ra_inl(NFC_STATUS); -+ int_st = ra_inl(NFC_INT_ST); -+ -+ ndelay(10); -+ } while (!(int_st & INT_ST_RX_BUF_RDY) && retry--); -+ -+ if (!(int_st & INT_ST_RX_BUF_RDY)) { -+ printk("nfc_read_status: NFC fail, int_st(%x), retry:%x. nfc:%x, reset nfc and flash. \n", -+ int_st, retry, nfc_st); -+ nfc_all_reset(); -+ *status = NAND_STATUS_FAIL; -+ return -1; -+ } -+ -+ *status = (char)(le32_to_cpu(ra_inl(NFC_DATA)) & 0x0ff); -+ return 0; -+} -+ -+/** -+ * @return !0, chip protect. -+ * @return 0, chip not protected. -+ */ -+static int nfc_check_wp(void) -+{ -+ /* Check the WP bit */ -+#if !defined CONFIG_NOT_SUPPORT_WP -+ return !!(ra_inl(NFC_CTRL) & 0x01); -+#else -+ char result = 0; -+ int ret; -+ -+ ret = _nfc_read_status(&result); -+ //FIXME, if ret < 0 -+ -+ return !(result & NAND_STATUS_WP); -+#endif -+} -+ -+#if !defined CONFIG_NOT_SUPPORT_RB -+/* -+ * @return !0, chip ready. -+ * @return 0, chip busy. -+ */ -+static int nfc_device_ready(void) -+{ -+ /* Check the ready */ -+ return !!(ra_inl(NFC_STATUS) & 0x04); -+} -+#endif -+ -+ -+/** -+ * generic function to get data from flash. -+ * @return data length reading from flash. -+ */ -+static int _ra_nand_pull_data(char *buf, int len, int use_gdma) -+{ -+#ifdef RW_DATA_BY_BYTE -+ char *p = buf; -+#else -+ __u32 *p = (__u32 *)buf; -+#endif -+ int retry, int_st; -+ unsigned int ret_data; -+ int ret_size; -+ -+ // receive data by use_gdma -+ if (use_gdma) { -+ //if (_ra_nand_dma_pull((unsigned long)p, len)) { -+ if (1) { -+ printk("%s: fail \n", __func__); -+ len = -1; //return error -+ } -+ -+ return len; -+ } -+ -+ //fixme: retry count size? -+ retry = READ_STATUS_RETRY; -+ // no gdma -+ while (len > 0) { -+ int_st = ra_inl(NFC_INT_ST); -+ if (int_st & INT_ST_RX_BUF_RDY) { -+ -+ ret_data = ra_inl(NFC_DATA); -+ ra_outl(NFC_INT_ST, INT_ST_RX_BUF_RDY); -+#ifdef RW_DATA_BY_BYTE -+ ret_size = sizeof(unsigned int); -+ ret_size = min(ret_size, len); -+ len -= ret_size; -+ while (ret_size-- > 0) { -+ //nfc is little endian -+ *p++ = ret_data & 0x0ff; -+ ret_data >>= 8; -+ } -+#else -+ ret_size = min(len, 4); -+ len -= ret_size; -+ if (ret_size == 4) -+ *p++ = ret_data; -+ else { -+ __u8 *q = (__u8 *)p; -+ while (ret_size-- > 0) { -+ *q++ = ret_data & 0x0ff; -+ ret_data >>= 8; -+ } -+ p = (__u32 *)q; -+ } -+#endif -+ retry = READ_STATUS_RETRY; -+ } -+ else if (int_st & INT_ST_ND_DONE) { -+ break; -+ } -+ else { -+ udelay(1); -+ if (retry-- < 0) -+ break; -+ } -+ } -+ -+#ifdef RW_DATA_BY_BYTE -+ return (int)(p - buf); -+#else -+ return ((int)p - (int)buf); -+#endif -+} -+ -+/** -+ * generic function to put data into flash. -+ * @return data length writing into flash. -+ */ -+static int _ra_nand_push_data(char *buf, int len, int use_gdma) -+{ -+#ifdef RW_DATA_BY_BYTE -+ char *p = buf; -+#else -+ __u32 *p = (__u32 *)buf; -+#endif -+ int retry, int_st; -+ unsigned int tx_data = 0; -+ int tx_size, iter = 0; -+ -+ // receive data by use_gdma -+ if (use_gdma) { -+ //if (_ra_nand_dma_push((unsigned long)p, len)) -+ if (1) -+ len = 0; -+ printk("%s: fail \n", __func__); -+ return len; -+ } -+ -+ // no gdma -+ retry = READ_STATUS_RETRY; -+ while (len > 0) { -+ int_st = ra_inl(NFC_INT_ST); -+ if (int_st & INT_ST_TX_BUF_RDY) { -+#ifdef RW_DATA_BY_BYTE -+ tx_size = min(len, (int)sizeof(unsigned long)); -+ for (iter = 0; iter < tx_size; iter++) { -+ tx_data |= (*p++ << (8*iter)); -+ } -+#else -+ tx_size = min(len, 4); -+ if (tx_size == 4) -+ tx_data = (*p++); -+ else { -+ __u8 *q = (__u8 *)p; -+ for (iter = 0; iter < tx_size; iter++) -+ tx_data |= (*q++ << (8*iter)); -+ p = (__u32 *)q; -+ } -+#endif -+ ra_outl(NFC_INT_ST, INT_ST_TX_BUF_RDY); -+ ra_outl(NFC_DATA, tx_data); -+ len -= tx_size; -+ retry = READ_STATUS_RETRY; -+ } -+ else if (int_st & INT_ST_ND_DONE) { -+ break; -+ } -+ else { -+ udelay(1); -+ if (retry-- < 0) { -+ ra_dbg("%s p:%p buf:%p \n", __func__, p, buf); -+ break; -+ } -+ } -+ } -+ -+ -+#ifdef RW_DATA_BY_BYTE -+ return (int)(p - buf); -+#else -+ return ((int)p - (int)buf); -+#endif -+ -+} -+ -+static int nfc_select_chip(struct ra_nand_chip *ra, int chipnr) -+{ -+#if (CONFIG_NUMCHIPS == 1) -+ if (!(chipnr < CONFIG_NUMCHIPS)) -+ return -1; -+ return 0; -+#else -+ BUG(); -+#endif -+} -+ -+/** @return -1: chip_select fail -+ * 0 : both CE and WP==0 are OK -+ * 1 : CE OK and WP==1 -+ */ -+static int nfc_enable_chip(struct ra_nand_chip *ra, unsigned int offs, int read_only) -+{ -+ int chipnr = offs >> ra->chip_shift; -+ -+ ra_dbg("%s: offs:%x read_only:%x \n", __func__, offs, read_only); -+ -+ chipnr = nfc_select_chip(ra, chipnr); -+ if (chipnr < 0) { -+ printk("%s: chip select error, offs(%x)\n", __func__, offs); -+ return -1; -+ } -+ -+ if (!read_only) -+ return nfc_check_wp(); -+ -+ return 0; -+} -+ -+/** wait nand chip becomeing ready and return queried status. -+ * @param snooze: sleep time in ms unit before polling device ready. -+ * @return status of nand chip -+ * @return NAN_STATUS_FAIL if something unexpected. -+ */ -+static int nfc_wait_ready(int snooze_ms) -+{ -+ int retry; -+ char status; -+ -+ // wait nfc idle, -+ if (snooze_ms == 0) -+ snooze_ms = 1; -+ else -+ schedule_timeout(snooze_ms * HZ / 1000); -+ -+ snooze_ms = retry = snooze_ms *1000000 / 100 ; // ndelay(100) -+ -+ while (!NFC_TRANS_DONE() && retry--) { -+ if (!cond_resched()) -+ ndelay(100); -+ } -+ -+ if (!NFC_TRANS_DONE()) { -+ printk("nfc_wait_ready: no transaction done \n"); -+ return NAND_STATUS_FAIL; -+ } -+ -+#if !defined (CONFIG_NOT_SUPPORT_RB) -+ //fixme -+ while(!(status = nfc_device_ready()) && retry--) { -+ ndelay(100); -+ } -+ -+ if (status == 0) { -+ printk("nfc_wait_ready: no device ready. \n"); -+ return NAND_STATUS_FAIL; -+ } -+ -+ _nfc_read_status(&status); -+ return status; -+#else -+ -+ while(retry--) { -+ _nfc_read_status(&status); -+ if (status & NAND_STATUS_READY) -+ break; -+ ndelay(100); -+ } -+ if (retry<0) -+ printk("nfc_wait_ready 2: no device ready, status(%x). \n", status); -+ -+ return status; -+#endif -+} -+ -+/** -+ * return 0: erase OK -+ * return -EIO: fail -+ */ -+int nfc_erase_block(struct ra_nand_chip *ra, int row_addr) -+{ -+ unsigned long cmd1, cmd2, bus_addr, conf; -+ char status; -+ -+ cmd1 = 0x60; -+ cmd2 = 0xd0; -+ bus_addr = row_addr; -+ conf = 0x00511 | ((CFG_ROW_ADDR_CYCLE)<<16); -+ -+ // set NFC -+ ra_dbg("%s: cmd1: %lx, cmd2:%lx bus_addr: %lx, conf: %lx \n", -+ __func__, cmd1, cmd2, bus_addr, conf); -+ -+ //fixme, should we check nfc status? -+ CLEAR_INT_STATUS(); -+ -+ ra_outl(NFC_CMD1, cmd1); -+ ra_outl(NFC_CMD2, cmd2); -+ ra_outl(NFC_ADDR, bus_addr); -+ ra_outl(NFC_CONF, conf); -+ -+ status = nfc_wait_ready(3); //erase wait 3ms -+ if (status & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ return -EIO; -+ } -+ -+ return 0; -+ -+} -+ -+static inline int _nfc_read_raw_data(int cmd1, int cmd2, int bus_addr, int bus_addr2, int conf, char *buf, int len, int flags) -+{ -+ int ret; -+ -+ CLEAR_INT_STATUS(); -+ ra_outl(NFC_CMD1, cmd1); -+ ra_outl(NFC_CMD2, cmd2); -+ ra_outl(NFC_ADDR, bus_addr); -+#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \ -+ defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621) -+ ra_outl(NFC_ADDR2, bus_addr2); -+#endif -+ ra_outl(NFC_CONF, conf); -+ -+ ret = _ra_nand_pull_data(buf, len, 0); -+ if (ret != len) { -+ ra_dbg("%s: ret:%x (%x) \n", __func__, ret, len); -+ return NAND_STATUS_FAIL; -+ } -+ -+ //FIXME, this section is not necessary -+ ret = nfc_wait_ready(0); //wait ready -+ /* to prevent the DATA FIFO 's old data from next operation */ -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x02); //clear data buffer -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) & ~0x02); //clear data buffer -+ -+ if (ret & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ return NAND_STATUS_FAIL; -+ } -+ -+ return 0; -+} -+ -+static inline int _nfc_write_raw_data(int cmd1, int cmd3, int bus_addr, int bus_addr2, int conf, char *buf, int len, int flags) -+{ -+ int ret; -+ -+ CLEAR_INT_STATUS(); -+ ra_outl(NFC_CMD1, cmd1); -+ ra_outl(NFC_CMD3, cmd3); -+ ra_outl(NFC_ADDR, bus_addr); -+#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \ -+ defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621) -+ ra_outl(NFC_ADDR2, bus_addr2); -+#endif -+ ra_outl(NFC_CONF, conf); -+ -+ ret = _ra_nand_push_data(buf, len, 0); -+ if (ret != len) { -+ ra_dbg("%s: ret:%x (%x) \n", __func__, ret, len); -+ return NAND_STATUS_FAIL; -+ } -+ -+ ret = nfc_wait_ready(1); //write wait 1ms -+ /* to prevent the DATA FIFO 's old data from next operation */ -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x02); //clear data buffer -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) & ~0x02); //clear data buffer -+ -+ if (ret & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ return NAND_STATUS_FAIL; -+ } -+ -+ return 0; -+} -+ -+/** -+ * @return !0: fail -+ * @return 0: OK -+ */ -+int nfc_read_oob(struct ra_nand_chip *ra, int page, unsigned int offs, char *buf, int len, int flags) -+{ -+ unsigned int cmd1 = 0, cmd2 = 0, conf = 0; -+ unsigned int bus_addr = 0, bus_addr2 = 0; -+ unsigned int ecc_en; -+ int use_gdma; -+ int status; -+ -+ int pages_perblock = 1<<(ra->erase_shift - ra->page_shift); -+ // constrain of nfc read function -+ -+#if defined (WORKAROUND_RX_BUF_OV) -+ BUG_ON (len > 60); //problem of rx-buffer overrun -+#endif -+ BUG_ON (offs >> ra->oob_shift); //page boundry -+ BUG_ON ((unsigned int)(((offs + len) >> ra->oob_shift) + page) > -+ ((page + pages_perblock) & ~(pages_perblock-1))); //block boundry -+ -+ use_gdma = flags & FLAG_USE_GDMA; -+ ecc_en = flags & FLAG_ECC_EN; -+ bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)) | (offs & ((1<<CFG_COLUMN_ADDR_CYCLE*8) - 1)); -+ -+ if (is_nand_page_2048) { -+ bus_addr += CFG_PAGESIZE; -+ bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8); -+ cmd1 = 0x0; -+ cmd2 = 0x30; -+ conf = 0x000511| ((CFG_ADDR_CYCLE)<<16) | (len << 20); -+ } -+ else { -+ cmd1 = 0x50; -+ conf = 0x000141| ((CFG_ADDR_CYCLE)<<16) | (len << 20); -+ } -+ if (ecc_en) -+ conf |= (1<<3); -+ if (use_gdma) -+ conf |= (1<<2); -+ -+ ra_dbg("%s: cmd1:%x, bus_addr:%x, conf:%x, len:%x, flag:%x\n", -+ __func__, cmd1, bus_addr, conf, len, flags); -+ -+ status = _nfc_read_raw_data(cmd1, cmd2, bus_addr, bus_addr2, conf, buf, len, flags); -+ if (status & NAND_STATUS_FAIL) { -+ printk("%s: fail\n", __func__); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+/** -+ * @return !0: fail -+ * @return 0: OK -+ */ -+int nfc_write_oob(struct ra_nand_chip *ra, int page, unsigned int offs, char *buf, int len, int flags) -+{ -+ unsigned int cmd1 = 0, cmd3=0, conf = 0; -+ unsigned int bus_addr = 0, bus_addr2 = 0; -+ int use_gdma; -+ int status; -+ -+ int pages_perblock = 1<<(ra->erase_shift - ra->page_shift); -+ // constrain of nfc read function -+ -+ BUG_ON (offs >> ra->oob_shift); //page boundry -+ BUG_ON ((unsigned int)(((offs + len) >> ra->oob_shift) + page) > -+ ((page + pages_perblock) & ~(pages_perblock-1))); //block boundry -+ -+ use_gdma = flags & FLAG_USE_GDMA; -+ bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)) | (offs & ((1<<CFG_COLUMN_ADDR_CYCLE*8) - 1)); -+ -+ if (is_nand_page_2048) { -+ cmd1 = 0x80; -+ cmd3 = 0x10; -+ bus_addr += CFG_PAGESIZE; -+ bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8); -+ conf = 0x001123 | ((CFG_ADDR_CYCLE)<<16) | ((len) << 20); -+ } -+ else { -+ cmd1 = 0x08050; -+ cmd3 = 0x10; -+ conf = 0x001223 | ((CFG_ADDR_CYCLE)<<16) | ((len) << 20); -+ } -+ if (use_gdma) -+ conf |= (1<<2); -+ -+ // set NFC -+ ra_dbg("%s: cmd1: %x, cmd3: %x bus_addr: %x, conf: %x, len:%x\n", -+ __func__, cmd1, cmd3, bus_addr, conf, len); -+ -+ status = _nfc_write_raw_data(cmd1, cmd3, bus_addr, bus_addr2, conf, buf, len, flags); -+ if (status & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+ -+int nfc_read_page(struct ra_nand_chip *ra, char *buf, int page, int flags); -+int nfc_write_page(struct ra_nand_chip *ra, char *buf, int page, int flags); -+ -+ -+#if !defined (WORKAROUND_RX_BUF_OV) -+static int one_bit_correction(char *ecc, char *expected, int *bytes, int *bits); -+int nfc_ecc_verify(struct ra_nand_chip *ra, char *buf, int page, int mode) -+{ -+ int ret, i; -+ char *p, *e; -+ int ecc; -+ -+ //ra_dbg("%s, page:%x mode:%d\n", __func__, page, mode); -+ -+ if (mode == FL_WRITING) { -+ int len = CFG_PAGESIZE + CFG_PAGE_OOBSIZE; -+ int conf = 0x000141| ((CFG_ADDR_CYCLE)<<16) | (len << 20); -+ conf |= (1<<3); //(ecc_en) -+ //conf |= (1<<2); // (use_gdma) -+ -+ p = ra->readback_buffers; -+ ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_ECC_EN); -+ if (ret == 0) -+ goto ecc_check; -+ -+ //FIXME, double comfirm -+ printk("%s: read back fail, try again \n",__func__); -+ ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_ECC_EN); -+ if (ret != 0) { -+ printk("\t%s: read back fail agian \n",__func__); -+ goto bad_block; -+ } -+ } -+ else if (mode == FL_READING) { -+ p = buf; -+ } -+ else -+ return -2; -+ -+ecc_check: -+ p += CFG_PAGESIZE; -+ if (!is_nand_page_2048) { -+ ecc = ra_inl(NFC_ECC); -+ if (ecc == 0) //clean page. -+ return 0; -+ e = (char*)&ecc; -+ for (i=0; i<CONFIG_ECC_BYTES; i++) { -+ int eccpos = CONFIG_ECC_OFFSET + i; -+ if (*(p + eccpos) != (char)0xff) -+ break; -+ if (i == CONFIG_ECC_BYTES - 1) { -+ printk("skip ecc 0xff at page %x\n", page); -+ return 0; -+ } -+ } -+ for (i=0; i<CONFIG_ECC_BYTES; i++) { -+ int eccpos = CONFIG_ECC_OFFSET + i; -+ if (*(p + eccpos) != *(e + i)) { -+ printk("%s mode:%s, invalid ecc, page: %x read:%x %x %x, ecc:%x \n", -+ __func__, (mode == FL_READING)?"read":"write", page, -+ *(p+ CONFIG_ECC_OFFSET), *(p+ CONFIG_ECC_OFFSET+1), *(p+ CONFIG_ECC_OFFSET +2), ecc); -+ return -1; -+ } -+ } -+ } -+#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \ -+ defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621) -+ else { -+ int ecc2, ecc3, ecc4, qsz; -+ char *e2, *e3, *e4; -+ int correction_flag = 0; -+ ecc = ra_inl(NFC_ECC_P1); -+ ecc2 = ra_inl(NFC_ECC_P2); -+ ecc3 = ra_inl(NFC_ECC_P3); -+ ecc4 = ra_inl(NFC_ECC_P4); -+ e = (char*)&ecc; -+ e2 = (char*)&ecc2; -+ e3 = (char*)&ecc3; -+ e4 = (char*)&ecc4; -+ qsz = CFG_PAGE_OOBSIZE / 4; -+ if (ecc == 0 && ecc2 == 0 && ecc3 == 0 && ecc4 == 0) -+ return 0; -+ for (i=0; i<CONFIG_ECC_BYTES; i++) { -+ int eccpos = CONFIG_ECC_OFFSET + i; -+ if (*(p + eccpos) != (char)0xff) -+ break; -+ else if (*(p + eccpos + qsz) != (char)0xff) -+ break; -+ else if (*(p + eccpos + qsz*2) != (char)0xff) -+ break; -+ else if (*(p + eccpos + qsz*3) != (char)0xff) -+ break; -+ if (i == CONFIG_ECC_BYTES - 1) { -+ printk("skip ecc 0xff at page %x\n", page); -+ return 0; -+ } -+ } -+ for (i=0; i<CONFIG_ECC_BYTES; i++) { -+ int eccpos = CONFIG_ECC_OFFSET + i; -+ if (*(p + eccpos) != *(e + i)) { -+ printk("%s mode:%s, invalid ecc, page: %x read:%x %x %x, ecc:%x \n", -+ __func__, (mode == FL_READING)?"read":"write", page, -+ *(p+ CONFIG_ECC_OFFSET), *(p+ CONFIG_ECC_OFFSET+1), *(p+ CONFIG_ECC_OFFSET +2), ecc); -+ correction_flag |= 0x1; -+ } -+ if (*(p + eccpos + qsz) != *(e2 + i)) { -+ printk("%s mode:%s, invalid ecc2, page: %x read:%x %x %x, ecc2:%x \n", -+ __func__, (mode == FL_READING)?"read":"write", page, -+ *(p+CONFIG_ECC_OFFSET+qsz), *(p+ CONFIG_ECC_OFFSET+1+qsz), *(p+ CONFIG_ECC_OFFSET+2+qsz), ecc2); -+ correction_flag |= 0x2; -+ } -+ if (*(p + eccpos + qsz*2) != *(e3 + i)) { -+ printk("%s mode:%s, invalid ecc3, page: %x read:%x %x %x, ecc3:%x \n", -+ __func__, (mode == FL_READING)?"read":"write", page, -+ *(p+CONFIG_ECC_OFFSET+qsz*2), *(p+ CONFIG_ECC_OFFSET+1+qsz*2), *(p+ CONFIG_ECC_OFFSET+2+qsz*2), ecc3); -+ correction_flag |= 0x4; -+ } -+ if (*(p + eccpos + qsz*3) != *(e4 + i)) { -+ printk("%s mode:%s, invalid ecc4, page: %x read:%x %x %x, ecc4:%x \n", -+ __func__, (mode == FL_READING)?"read":"write", page, -+ *(p+CONFIG_ECC_OFFSET+qsz*3), *(p+ CONFIG_ECC_OFFSET+1+qsz*3), *(p+ CONFIG_ECC_OFFSET+2+qsz*3), ecc4); -+ correction_flag |= 0x8; -+ } -+ } -+ -+ if (correction_flag) -+ { -+ printk("trying to do correction!\n"); -+ if (correction_flag & 0x1) -+ { -+ int bytes, bits; -+ char *pBuf = p - CFG_PAGESIZE; -+ -+ if (one_bit_correction(p + CONFIG_ECC_OFFSET, e, &bytes, &bits) == 0) -+ { -+ pBuf[bytes] = pBuf[bytes] ^ (1 << bits); -+ printk("1. correct byte %d, bit %d!\n", bytes, bits); -+ } -+ else -+ { -+ printk("failed to correct!\n"); -+ return -1; -+ } -+ } -+ -+ if (correction_flag & 0x2) -+ { -+ int bytes, bits; -+ char *pBuf = (p - CFG_PAGESIZE) + CFG_PAGESIZE/4; -+ -+ if (one_bit_correction((p + CONFIG_ECC_OFFSET + qsz), e2, &bytes, &bits) == 0) -+ { -+ pBuf[bytes] = pBuf[bytes] ^ (1 << bits); -+ printk("2. correct byte %d, bit %d!\n", bytes, bits); -+ } -+ else -+ { -+ printk("failed to correct!\n"); -+ return -1; -+ } -+ } -+ if (correction_flag & 0x4) -+ { -+ int bytes, bits; -+ char *pBuf = (p - CFG_PAGESIZE) + CFG_PAGESIZE/2; -+ -+ if (one_bit_correction((p + CONFIG_ECC_OFFSET + qsz * 2), e3, &bytes, &bits) == 0) -+ { -+ pBuf[bytes] = pBuf[bytes] ^ (1 << bits); -+ printk("3. correct byte %d, bit %d!\n", bytes, bits); -+ } -+ else -+ { -+ printk("failed to correct!\n"); -+ return -1; -+ } -+ } -+ if (correction_flag & 0x8) -+ { -+ int bytes, bits; -+ char *pBuf = (p - CFG_PAGESIZE) + CFG_PAGESIZE*3/4; -+ -+ if (one_bit_correction((p + CONFIG_ECC_OFFSET + qsz * 3), e4, &bytes, &bits) == 0) -+ { -+ pBuf[bytes] = pBuf[bytes] ^ (1 << bits); -+ printk("4. correct byte %d, bit %d!\n", bytes, bits); -+ } -+ else -+ { -+ printk("failed to correct!\n"); -+ return -1; -+ } -+ } -+ } -+ -+ } -+#endif -+ return 0; -+ -+bad_block: -+ return -1; -+} -+ -+#else -+ -+void ranfc_dump(void) -+{ -+ int i; -+ for (i=0; i<11; i++) { -+ if (i==6) -+ continue; -+ printk("%x: %x \n", NFC_BASE + i*4, ra_inl(NFC_BASE + i*4)); -+ } -+} -+ -+/** -+ * @return 0, ecc OK or corrected. -+ * @return NAND_STATUS_FAIL, ecc fail. -+ */ -+ -+int nfc_ecc_verify(struct ra_nand_chip *ra, char *buf, int page, int mode) -+{ -+ int ret, i; -+ char *p, *e; -+ int ecc; -+ -+ if (ranfc_verify == 0) -+ return 0; -+ -+ ra_dbg("%s, page:%x mode:%d\n", __func__, page, mode); -+ -+ if (mode == FL_WRITING) { // read back and memcmp -+ ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_NONE); -+ if (ret != 0) //double comfirm -+ ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_NONE); -+ -+ if (ret != 0) { -+ printk("%s: mode:%x read back fail \n", __func__, mode); -+ return -1; -+ } -+ return memcmp(buf, ra->readback_buffers, 1<<ra->page_shift); -+ } -+ -+ if (mode == FL_READING) { -+#if 0 -+ if (ra->sandbox_page == 0) -+ return 0; -+ -+ ret = nfc_write_page(ra, buf, ra->sandbox_page, FLAG_USE_GDMA | FLAG_ECC_EN); -+ if (ret != 0) { -+ printk("%s, fail write sandbox_page \n", __func__); -+ return -1; -+ } -+#else -+ /** @note: -+ * The following command is actually not 'write' command to drive NFC to write flash. -+ * However, it can make NFC to calculate ECC, that will be used to compare with original ones. -+ * --YT -+ */ -+ unsigned int conf = 0x001223| (CFG_ADDR_CYCLE<<16) | (0x200 << 20) | (1<<3) | (1<<2); -+ _nfc_write_raw_data(0xff, 0xff, ra->sandbox_page<<ra->page_shift, conf, buf, 0x200, FLAG_USE_GDMA); -+#endif -+ -+ ecc = ra_inl(NFC_ECC); -+ if (ecc == 0) //clean page. -+ return 0; -+ e = (char*)&ecc; -+ p = buf + (1<<ra->page_shift); -+ for (i=0; i<CONFIG_ECC_BYTES; i++) { -+ int eccpos = CONFIG_ECC_OFFSET + i; -+ if (*(p + eccpos) != *(e + i)) { -+ printk("%s mode:%s, invalid ecc, page: %x read:%x %x %x, write:%x \n", -+ __func__, (mode == FL_READING)?"read":"write", page, -+ *(p+ CONFIG_ECC_OFFSET), *(p+ CONFIG_ECC_OFFSET+1), *(p+ CONFIG_ECC_OFFSET +2), ecc); -+ -+ for (i=0; i<528; i++) -+ printk("%-2x \n", *(buf + i)); -+ return -1; -+ } -+ } -+ return 0; -+ } -+ -+ return -1; -+ -+} -+ -+#endif -+ -+ -+/** -+ * @return -EIO, writing size is less than a page -+ * @return 0, OK -+ */ -+int nfc_read_page(struct ra_nand_chip *ra, char *buf, int page, int flags) -+{ -+ unsigned int cmd1 = 0, cmd2 = 0, conf = 0; -+ unsigned int bus_addr = 0, bus_addr2 = 0; -+ unsigned int ecc_en; -+ int use_gdma; -+ int size, offs; -+ int status = 0; -+ -+ use_gdma = flags & FLAG_USE_GDMA; -+ ecc_en = flags & FLAG_ECC_EN; -+ -+ page = page & (CFG_CHIPSIZE - 1); // chip boundary -+ size = CFG_PAGESIZE + CFG_PAGE_OOBSIZE; //add oobsize -+ offs = 0; -+ -+ while (size > 0) { -+ int len; -+#if defined (WORKAROUND_RX_BUF_OV) -+ len = min(60, size); -+#else -+ len = size; -+#endif -+ bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)) | (offs & ((1<<CFG_COLUMN_ADDR_CYCLE*8)-1)); -+ if (is_nand_page_2048) { -+ bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8); -+ cmd1 = 0x0; -+ cmd2 = 0x30; -+ conf = 0x000511| ((CFG_ADDR_CYCLE)<<16) | (len << 20); -+ } -+ else { -+ if (offs & ~(CFG_PAGESIZE-1)) -+ cmd1 = 0x50; -+ else if (offs & ~((1<<CFG_COLUMN_ADDR_CYCLE*8)-1)) -+ cmd1 = 0x01; -+ else -+ cmd1 = 0; -+ -+ conf = 0x000141| ((CFG_ADDR_CYCLE)<<16) | (len << 20); -+ } -+#if !defined (WORKAROUND_RX_BUF_OV) -+ if (ecc_en) -+ conf |= (1<<3); -+#endif -+ if (use_gdma) -+ conf |= (1<<2); -+ -+ status = _nfc_read_raw_data(cmd1, cmd2, bus_addr, bus_addr2, conf, buf+offs, len, flags); -+ if (status & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ return -EIO; -+ } -+ -+ offs += len; -+ size -= len; -+ } -+ -+ // verify and correct ecc -+ if ((flags & (FLAG_VERIFY | FLAG_ECC_EN)) == (FLAG_VERIFY | FLAG_ECC_EN)) { -+ status = nfc_ecc_verify(ra, buf, page, FL_READING); -+ if (status != 0) { -+ printk("%s: fail, buf:%x, page:%x, flag:%x\n", -+ __func__, (unsigned int)buf, page, flags); -+ return -EBADMSG; -+ } -+ } -+ else { -+ // fix,e not yet support -+ ra->buffers_page = -1; //cached -+ } -+ -+ return 0; -+} -+ -+ -+/** -+ * @return -EIO, fail to write -+ * @return 0, OK -+ */ -+int nfc_write_page(struct ra_nand_chip *ra, char *buf, int page, int flags) -+{ -+ unsigned int cmd1 = 0, cmd3, conf = 0; -+ unsigned int bus_addr = 0, bus_addr2 = 0; -+ unsigned int ecc_en; -+ int use_gdma; -+ int size; -+ char status; -+ uint8_t *oob = buf + (1<<ra->page_shift); -+ -+ use_gdma = flags & FLAG_USE_GDMA; -+ ecc_en = flags & FLAG_ECC_EN; -+ -+ oob[ra->badblockpos] = 0xff; //tag as good block. -+ ra->buffers_page = -1; //cached -+ -+ page = page & (CFG_CHIPSIZE-1); //chip boundary -+ size = CFG_PAGESIZE + CFG_PAGE_OOBSIZE; //add oobsize -+ bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)); //write_page always write from offset 0. -+ -+ if (is_nand_page_2048) { -+ bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8); -+ cmd1 = 0x80; -+ cmd3 = 0x10; -+ conf = 0x001123| ((CFG_ADDR_CYCLE)<<16) | (size << 20); -+ } -+ else { -+ cmd1 = 0x8000; -+ cmd3 = 0x10; -+ conf = 0x001223| ((CFG_ADDR_CYCLE)<<16) | (size << 20); -+} -+ if (ecc_en) -+ conf |= (1<<3); //enable ecc -+ if (use_gdma) -+ conf |= (1<<2); -+ -+ // set NFC -+ ra_dbg("nfc_write_page: cmd1: %x, cmd3: %x bus_addr: %x, conf: %x, len:%x\n", -+ cmd1, cmd3, bus_addr, conf, size); -+ -+ status = _nfc_write_raw_data(cmd1, cmd3, bus_addr, bus_addr2, conf, buf, size, flags); -+ if (status & NAND_STATUS_FAIL) { -+ printk("%s: fail \n", __func__); -+ return -EIO; -+ } -+ -+ -+ if (flags & FLAG_VERIFY) { // verify and correct ecc -+ status = nfc_ecc_verify(ra, buf, page, FL_WRITING); -+ -+#ifdef RANDOM_GEN_BAD_BLOCK -+ if (((random32() & 0x1ff) == 0x0) && (page >= 0x100)) // randomly create bad block -+ { -+ printk("hmm... create a bad block at page %x\n", (bus_addr >> 16)); -+ status = -1; -+ } -+#endif -+ -+ if (status != 0) { -+ printk("%s: ecc_verify fail: ret:%x \n", __func__, status); -+ oob[ra->badblockpos] = 0x33; -+ page -= page % (CFG_BLOCKSIZE/CFG_PAGESIZE); -+ printk("create a bad block at page %x\n", page); -+ if (!is_nand_page_2048) -+ status = nfc_write_oob(ra, page, ra->badblockpos, oob+ra->badblockpos, 1, flags); -+ else -+ { -+ status = _nfc_write_raw_data(cmd1, cmd3, bus_addr, bus_addr2, conf, buf, size, flags); -+ nfc_write_oob(ra, page, 0, oob, 16, FLAG_NONE); -+ } -+ return -EBADMSG; -+ } -+ } -+ -+ -+ ra->buffers_page = page; //cached -+ return 0; -+} -+ -+ -+ -+/************************************************************* -+ * nand internal process -+ *************************************************************/ -+ -+/** -+ * nand_release_device - [GENERIC] release chip -+ * @mtd: MTD device structure -+ * -+ * Deselect, release chip lock and wake up anyone waiting on the device -+ */ -+static void nand_release_device(struct ra_nand_chip *ra) -+{ -+ /* De-select the NAND device */ -+ nfc_select_chip(ra, -1); -+ -+ /* Release the controller and the chip */ -+ ra->state = FL_READY; -+ -+ mutex_unlock(ra->controller); -+} -+ -+/** -+ * nand_get_device - [GENERIC] Get chip for selected access -+ * @chip: the nand chip descriptor -+ * @mtd: MTD device structure -+ * @new_state: the state which is requested -+ * -+ * Get the device and lock it for exclusive access -+ */ -+static int -+nand_get_device(struct ra_nand_chip *ra, int new_state) -+{ -+ int ret = 0; -+ -+ ret = mutex_lock_interruptible(ra->controller); -+ if (!ret) -+ ra->state = new_state; -+ -+ return ret; -+ -+} -+ -+ -+ -+/************************************************************* -+ * nand internal process -+ *************************************************************/ -+ -+int nand_bbt_get(struct ra_nand_chip *ra, int block) -+{ -+ int byte, bits; -+ bits = block * BBTTAG_BITS; -+ -+ byte = bits / 8; -+ bits = bits % 8; -+ -+ return (ra->bbt[byte] >> bits) & BBTTAG_BITS_MASK; -+} -+ -+int nand_bbt_set(struct ra_nand_chip *ra, int block, int tag) -+{ -+ int byte, bits; -+ bits = block * BBTTAG_BITS; -+ -+ byte = bits / 8; -+ bits = bits % 8; -+ -+ // If previous tag is bad, dont overwrite it -+ if (((ra->bbt[byte] >> bits) & BBTTAG_BITS_MASK) == BBT_TAG_BAD) -+ { -+ return BBT_TAG_BAD; -+ } -+ -+ ra->bbt[byte] = (ra->bbt[byte] & ~(BBTTAG_BITS_MASK << bits)) | ((tag & BBTTAG_BITS_MASK) << bits); -+ -+ return tag; -+} -+ -+/** -+ * nand_block_checkbad - [GENERIC] Check if a block is marked bad -+ * @mtd: MTD device structure -+ * @ofs: offset from device start -+ * -+ * Check, if the block is bad. Either by reading the bad block table or -+ * calling of the scan function. -+ */ -+int nand_block_checkbad(struct ra_nand_chip *ra, loff_t offs) -+{ -+ int page, block; -+ int ret = 4; -+ unsigned int tag; -+ char *str[]= {"UNK", "RES", "BAD", "GOOD"}; -+ -+ if (ranfc_bbt == 0) -+ return 0; -+ -+ { -+ // align with chip -+ -+ offs = offs & ((1<<ra->chip_shift) -1); -+ -+ page = offs >> ra->page_shift; -+ block = offs >> ra->erase_shift; -+ } -+ -+ tag = nand_bbt_get(ra, block); -+ -+ if (tag == BBT_TAG_UNKNOWN) { -+ ret = nfc_read_oob(ra, page, ra->badblockpos, (char*)&tag, 1, FLAG_NONE); -+ if (ret == 0) -+ tag = ((le32_to_cpu(tag) & 0x0ff) == 0x0ff) ? BBT_TAG_GOOD : BBT_TAG_BAD; -+ else -+ tag = BBT_TAG_BAD; -+ -+ nand_bbt_set(ra, block, tag); -+ } -+ -+ if (tag != BBT_TAG_GOOD) { -+ printk("%s: offs:%x tag: %s \n", __func__, (unsigned int)offs, str[tag]); -+ return 1; -+ } -+ else -+ return 0; -+ -+} -+ -+ -+ -+/** -+ * nand_block_markbad - -+ */ -+int nand_block_markbad(struct ra_nand_chip *ra, loff_t offs) -+{ -+ int page, block; -+ int ret = 4; -+ unsigned int tag; -+ char *ecc; -+ -+ // align with chip -+ ra_dbg("%s offs: %x \n", __func__, (int)offs); -+ -+ offs = offs & ((1<<ra->chip_shift) -1); -+ -+ page = offs >> ra->page_shift; -+ block = offs >> ra->erase_shift; -+ -+ tag = nand_bbt_get(ra, block); -+ -+ if (tag == BBT_TAG_BAD) { -+ printk("%s: mark repeatedly \n", __func__); -+ return 0; -+ } -+ -+ // new tag as bad -+ tag =BBT_TAG_BAD; -+ ret = nfc_read_page(ra, ra->buffers, page, FLAG_NONE); -+ if (ret != 0) { -+ printk("%s: fail to read bad block tag \n", __func__); -+ goto tag_bbt; -+ } -+ -+ ecc = &ra->buffers[(1<<ra->page_shift)+ra->badblockpos]; -+ if (*ecc == (char)0x0ff) { -+ //tag into flash -+ *ecc = (char)tag; -+ ret = nfc_write_page(ra, ra->buffers, page, FLAG_USE_GDMA); -+ if (ret) -+ printk("%s: fail to write bad block tag \n", __func__); -+ -+ } -+ -+tag_bbt: -+ //update bbt -+ nand_bbt_set(ra, block, tag); -+ -+ return 0; -+} -+ -+ -+#if defined (WORKAROUND_RX_BUF_OV) -+/** -+ * to find a bad block for ecc verify of read_page -+ */ -+unsigned int nand_bbt_find_sandbox(struct ra_nand_chip *ra) -+{ -+ loff_t offs = 0; -+ int chipsize = 1 << ra->chip_shift; -+ int blocksize = 1 << ra->erase_shift; -+ -+ -+ while (offs < chipsize) { -+ if (nand_block_checkbad(ra, offs)) //scan and verify the unknown tag -+ break; -+ offs += blocksize; -+ } -+ -+ if (offs >= chipsize) { -+ offs = chipsize - blocksize; -+ } -+ -+ nand_bbt_set(ra, (unsigned int)offs>>ra->erase_shift, BBT_TAG_RES); // tag bbt only, instead of update badblockpos of flash. -+ return (offs >> ra->page_shift); -+} -+#endif -+ -+ -+ -+/** -+ * nand_erase_nand - [Internal] erase block(s) -+ * @mtd: MTD device structure -+ * @instr: erase instruction -+ * @allowbbt: allow erasing the bbt area -+ * -+ * Erase one ore more blocks -+ */ -+int _nand_erase_nand(struct ra_nand_chip *ra, struct erase_info *instr) -+{ -+ int page, len, status, ret; -+ unsigned int addr, blocksize = 1<<ra->erase_shift; -+ -+ ra_dbg("%s: start:%x, len:%x \n", __func__, -+ (unsigned int)instr->addr, (unsigned int)instr->len); -+ -+//#define BLOCK_ALIGNED(a) ((a) & (blocksize - 1)) // already defined -+ -+ if (BLOCK_ALIGNED(instr->addr) || BLOCK_ALIGNED(instr->len)) { -+ ra_dbg("%s: erase block not aligned, addr:%x len:%x\n", __func__, instr->addr, instr->len); -+ return -EINVAL; -+ } -+ -+ instr->fail_addr = 0xffffffff; -+ -+ len = instr->len; -+ addr = instr->addr; -+ instr->state = MTD_ERASING; -+ -+ while (len) { -+ -+ page = (int)(addr >> ra->page_shift); -+ -+ /* select device and check wp */ -+ if (nfc_enable_chip(ra, addr, 0)) { -+ printk("%s: nand is write protected \n", __func__); -+ instr->state = MTD_ERASE_FAILED; -+ goto erase_exit; -+ } -+ -+ /* if we have a bad block, we do not erase bad blocks */ -+ if (nand_block_checkbad(ra, addr)) { -+ printk(KERN_WARNING "nand_erase: attempt to erase a " -+ "bad block at 0x%08x\n", addr); -+ instr->state = MTD_ERASE_FAILED; -+ goto erase_exit; -+ } -+ -+ /* -+ * Invalidate the page cache, if we erase the block which -+ * contains the current cached page -+ */ -+ if (BLOCK_ALIGNED(addr) == BLOCK_ALIGNED(ra->buffers_page << ra->page_shift)) -+ ra->buffers_page = -1; -+ -+ status = nfc_erase_block(ra, page); -+ /* See if block erase succeeded */ -+ if (status) { -+ printk("%s: failed erase, page 0x%08x\n", __func__, page); -+ instr->state = MTD_ERASE_FAILED; -+ instr->fail_addr = (page << ra->page_shift); -+ goto erase_exit; -+ } -+ -+ -+ /* Increment page address and decrement length */ -+ len -= blocksize; -+ addr += blocksize; -+ -+ } -+ instr->state = MTD_ERASE_DONE; -+ -+erase_exit: -+ -+ ret = ((instr->state == MTD_ERASE_DONE) ? 0 : -EIO); -+ /* Do call back function */ -+ if (!ret) -+ mtd_erase_callback(instr); -+ -+ if (ret) { -+ nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_BAD); -+ } -+ -+ /* Return more or less happy */ -+ return ret; -+} -+ -+static int -+nand_write_oob_buf(struct ra_nand_chip *ra, uint8_t *buf, uint8_t *oob, size_t size, -+ int mode, int ooboffs) -+{ -+ size_t oobsize = 1<<ra->oob_shift; -+ struct nand_oobfree *free; -+ uint32_t woffs = ooboffs; -+ int retsize = 0; -+ -+ ra_dbg("%s: size:%x, mode:%x, offs:%x \n", __func__, size, mode, ooboffs); -+ -+ switch(mode) { -+ case MTD_OPS_PLACE_OOB: -+ case MTD_OPS_RAW: -+ if (ooboffs > oobsize) -+ return -1; -+ -+ size = min(size, oobsize - ooboffs); -+ memcpy(buf + ooboffs, oob, size); -+ retsize = size; -+ break; -+ -+ case MTD_OPS_AUTO_OOB: -+ if (ooboffs > ra->oob->oobavail) -+ return -1; -+ -+ while (size) { -+ for(free = ra->oob->oobfree; free->length && size; free++) { -+ int wlen = free->length - woffs; -+ int bytes = 0; -+ -+ /* Write request not from offset 0 ? */ -+ if (wlen <= 0) { -+ woffs = -wlen; -+ continue; -+ } -+ -+ bytes = min_t(size_t, size, wlen); -+ memcpy (buf + free->offset + woffs, oob, bytes); -+ woffs = 0; -+ oob += bytes; -+ size -= bytes; -+ retsize += bytes; -+ } -+ buf += oobsize; -+ } -+ break; -+ -+ default: -+ BUG(); -+ } -+ -+ return retsize; -+} -+ -+static int nand_read_oob_buf(struct ra_nand_chip *ra, uint8_t *oob, size_t size, -+ int mode, int ooboffs) -+{ -+ size_t oobsize = 1<<ra->oob_shift; -+ uint8_t *buf = ra->buffers + (1<<ra->page_shift); -+ int retsize=0; -+ -+ ra_dbg("%s: size:%x, mode:%x, offs:%x \n", __func__, size, mode, ooboffs); -+ -+ switch(mode) { -+ case MTD_OPS_PLACE_OOB: -+ case MTD_OPS_RAW: -+ if (ooboffs > oobsize) -+ return -1; -+ -+ size = min(size, oobsize - ooboffs); -+ memcpy(oob, buf + ooboffs, size); -+ return size; -+ -+ case MTD_OPS_AUTO_OOB: { -+ struct nand_oobfree *free; -+ uint32_t woffs = ooboffs; -+ -+ if (ooboffs > ra->oob->oobavail) -+ return -1; -+ -+ size = min(size, ra->oob->oobavail - ooboffs); -+ for(free = ra->oob->oobfree; free->length && size; free++) { -+ int wlen = free->length - woffs; -+ int bytes = 0; -+ -+ /* Write request not from offset 0 ? */ -+ if (wlen <= 0) { -+ woffs = -wlen; -+ continue; -+ } -+ -+ bytes = min_t(size_t, size, wlen); -+ memcpy (oob, buf + free->offset + woffs, bytes); -+ woffs = 0; -+ oob += bytes; -+ size -= bytes; -+ retsize += bytes; -+ } -+ return retsize; -+ } -+ default: -+ BUG(); -+ } -+ -+ return -1; -+} -+ -+/** -+ * nand_do_write_ops - [Internal] NAND write with ECC -+ * @mtd: MTD device structure -+ * @to: offset to write to -+ * @ops: oob operations description structure -+ * -+ * NAND write with ECC -+ */ -+static int nand_do_write_ops(struct ra_nand_chip *ra, loff_t to, -+ struct mtd_oob_ops *ops) -+{ -+ int page; -+ uint32_t datalen = ops->len; -+ uint32_t ooblen = ops->ooblen; -+ uint8_t *oob = ops->oobbuf; -+ uint8_t *data = ops->datbuf; -+ int pagesize = (1<<ra->page_shift); -+ int pagemask = (pagesize -1); -+ int oobsize = 1<<ra->oob_shift; -+ loff_t addr = to; -+ //int i = 0; //for ra_dbg only -+ -+ ra_dbg("%s: to:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x oobmode:%x \n", -+ __func__, (unsigned int)to, data, oob, datalen, ooblen, ops->ooboffs, ops->mode); -+ -+ ops->retlen = 0; -+ ops->oobretlen = 0; -+ -+ -+ /* Invalidate the page cache, when we write to the cached page */ -+ ra->buffers_page = -1; -+ -+ -+ if (data ==0) -+ datalen = 0; -+ -+ // oob sequential (burst) write -+ if (datalen == 0 && ooblen) { -+ int len = ((ooblen + ops->ooboffs) + (ra->oob->oobavail - 1)) / ra->oob->oobavail * oobsize; -+ -+ /* select chip, and check if it is write protected */ -+ if (nfc_enable_chip(ra, addr, 0)) -+ return -EIO; -+ -+ //FIXME, need sanity check of block boundary -+ page = (int)((to & ((1<<ra->chip_shift)-1)) >> ra->page_shift); //chip boundary -+ memset(ra->buffers, 0x0ff, pagesize); -+ //fixme, should we reserve the original content? -+ if (ops->mode == MTD_OPS_AUTO_OOB) { -+ nfc_read_oob(ra, page, 0, ra->buffers, len, FLAG_NONE); -+ } -+ //prepare buffers -+ if (ooblen != 8) -+ { -+ nand_write_oob_buf(ra, ra->buffers, oob, ooblen, ops->mode, ops->ooboffs); -+ // write out buffer to chip -+ nfc_write_oob(ra, page, 0, ra->buffers, len, FLAG_USE_GDMA); -+ } -+ -+ ops->oobretlen = ooblen; -+ ooblen = 0; -+ } -+ -+ // data sequential (burst) write -+ if (datalen && ooblen == 0) { -+ // ranfc can not support write_data_burst, since hw-ecc and fifo constraints.. -+ } -+ -+ // page write -+ while(datalen || ooblen) { -+ int len; -+ int ret; -+ int offs; -+ int ecc_en = 0; -+ -+ ra_dbg("%s (%d): addr:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x \n", -+ __func__, i++, (unsigned int)addr, data, oob, datalen, ooblen, ops->ooboffs); -+ -+ page = (int)((addr & ((1<<ra->chip_shift)-1)) >> ra->page_shift); //chip boundary -+ -+ /* select chip, and check if it is write protected */ -+ if (nfc_enable_chip(ra, addr, 0)) -+ return -EIO; -+ -+ // oob write -+ if (ops->mode == MTD_OPS_AUTO_OOB) { -+ //fixme, this path is not yet varified -+ nfc_read_oob(ra, page, 0, ra->buffers + pagesize, oobsize, FLAG_NONE); -+ } -+ if (oob && ooblen > 0) { -+ len = nand_write_oob_buf(ra, ra->buffers + pagesize, oob, ooblen, ops->mode, ops->ooboffs); -+ if (len < 0) -+ return -EINVAL; -+ -+ oob += len; -+ ops->oobretlen += len; -+ ooblen -= len; -+ } -+ -+ // data write -+ offs = addr & pagemask; -+ len = min_t(size_t, datalen, pagesize - offs); -+ if (data && len > 0) { -+ memcpy(ra->buffers + offs, data, len); // we can not sure ops->buf wether is DMA-able. -+ -+ data += len; -+ datalen -= len; -+ ops->retlen += len; -+ -+ ecc_en = FLAG_ECC_EN; -+ } -+ ret = nfc_write_page(ra, ra->buffers, page, FLAG_USE_GDMA | FLAG_VERIFY | -+ ((ops->mode == MTD_OPS_RAW || ops->mode == MTD_OPS_PLACE_OOB) ? 0 : ecc_en )); -+ if (ret) { -+ nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_BAD); -+ return ret; -+ } -+ -+ nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_GOOD); -+ -+ addr = (page+1) << ra->page_shift; -+ -+ } -+ return 0; -+} -+ -+/** -+ * nand_do_read_ops - [Internal] Read data with ECC -+ * -+ * @mtd: MTD device structure -+ * @from: offset to read from -+ * @ops: oob ops structure -+ * -+ * Internal function. Called with chip held. -+ */ -+static int nand_do_read_ops(struct ra_nand_chip *ra, loff_t from, -+ struct mtd_oob_ops *ops) -+{ -+ int page; -+ uint32_t datalen = ops->len; -+ uint32_t ooblen = ops->ooblen; -+ uint8_t *oob = ops->oobbuf; -+ uint8_t *data = ops->datbuf; -+ int pagesize = (1<<ra->page_shift); -+ int pagemask = (pagesize -1); -+ loff_t addr = from; -+ //int i = 0; //for ra_dbg only -+ -+ ra_dbg("%s: addr:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x \n", -+ __func__, (unsigned int)addr, data, oob, datalen, ooblen, ops->ooboffs); -+ -+ ops->retlen = 0; -+ ops->oobretlen = 0; -+ if (data == 0) -+ datalen = 0; -+ -+ -+ while(datalen || ooblen) { -+ int len; -+ int ret; -+ int offs; -+ -+ ra_dbg("%s (%d): addr:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x \n", -+ __func__, i++, (unsigned int)addr, data, oob, datalen, ooblen, ops->ooboffs); -+ /* select chip */ -+ if (nfc_enable_chip(ra, addr, 1) < 0) -+ return -EIO; -+ -+ page = (int)((addr & ((1<<ra->chip_shift)-1)) >> ra->page_shift); -+ -+ ret = nfc_read_page(ra, ra->buffers, page, FLAG_VERIFY | -+ ((ops->mode == MTD_OPS_RAW || ops->mode == MTD_OPS_PLACE_OOB) ? 0: FLAG_ECC_EN )); -+ //FIXME, something strange here, some page needs 2 more tries to guarantee read success. -+ if (ret) { -+ printk("read again:\n"); -+ ret = nfc_read_page(ra, ra->buffers, page, FLAG_VERIFY | -+ ((ops->mode == MTD_OPS_RAW || ops->mode == MTD_OPS_PLACE_OOB) ? 0: FLAG_ECC_EN )); -+ -+ if (ret) { -+ printk("read again fail \n"); -+ nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_BAD); -+ if ((ret != -EUCLEAN) && (ret != -EBADMSG)) { -+ return ret; -+ } -+ else { -+ /* ecc verification fail, but data need to be returned. */ -+ } -+ } -+ else { -+ printk(" read agian susccess \n"); -+ } -+ } -+ -+ // oob read -+ if (oob && ooblen > 0) { -+ len = nand_read_oob_buf(ra, oob, ooblen, ops->mode, ops->ooboffs); -+ if (len < 0) { -+ printk("nand_read_oob_buf: fail return %x \n", len); -+ return -EINVAL; -+ } -+ -+ oob += len; -+ ops->oobretlen += len; -+ ooblen -= len; -+ } -+ -+ // data read -+ offs = addr & pagemask; -+ len = min_t(size_t, datalen, pagesize - offs); -+ if (data && len > 0) { -+ memcpy(data, ra->buffers + offs, len); // we can not sure ops->buf wether is DMA-able. -+ -+ data += len; -+ datalen -= len; -+ ops->retlen += len; -+ if (ret) -+ return ret; -+ } -+ -+ -+ nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_GOOD); -+ // address go further to next page, instead of increasing of length of write. This avoids some special cases wrong. -+ addr = (page+1) << ra->page_shift; -+ } -+ return 0; -+} -+ -+static int -+ramtd_nand_erase(struct mtd_info *mtd, struct erase_info *instr) -+{ -+ struct ra_nand_chip *ra = (struct ra_nand_chip *)mtd->priv; -+ int ret; -+ -+ ra_dbg("%s: start:%x, len:%x \n", __func__, -+ (unsigned int)instr->addr, (unsigned int)instr->len); -+ -+ nand_get_device(ra, FL_ERASING); -+ ret = _nand_erase_nand((struct ra_nand_chip *)mtd->priv, instr); -+ nand_release_device(ra); -+ -+ return ret; -+} -+ -+static int -+ramtd_nand_write(struct mtd_info *mtd, loff_t to, size_t len, -+ size_t *retlen, const uint8_t *buf) -+{ -+ struct ra_nand_chip *ra = mtd->priv; -+ struct mtd_oob_ops ops; -+ int ret; -+ -+ ra_dbg("%s: to 0x%x len=0x%x\n", __func__, to, len); -+ -+ if ((to + len) > mtd->size) -+ return -EINVAL; -+ -+ if (!len) -+ return 0; -+ -+ nand_get_device(ra, FL_WRITING); -+ -+ memset(&ops, 0, sizeof(ops)); -+ ops.len = len; -+ ops.datbuf = (uint8_t *)buf; -+ ops.oobbuf = NULL; -+ ops.mode = MTD_OPS_AUTO_OOB; -+ -+ ret = nand_do_write_ops(ra, to, &ops); -+ -+ *retlen = ops.retlen; -+ -+ nand_release_device(ra); -+ -+ return ret; -+} -+ -+static int -+ramtd_nand_read(struct mtd_info *mtd, loff_t from, size_t len, -+ size_t *retlen, uint8_t *buf) -+{ -+ -+ struct ra_nand_chip *ra = mtd->priv; -+ int ret; -+ struct mtd_oob_ops ops; -+ -+ ra_dbg("%s: mtd:%p from:%x, len:%x, buf:%p \n", __func__, mtd, (unsigned int)from, len, buf); -+ -+ /* Do not allow reads past end of device */ -+ if ((from + len) > mtd->size) -+ return -EINVAL; -+ if (!len) -+ return 0; -+ -+ nand_get_device(ra, FL_READING); -+ -+ memset(&ops, 0, sizeof(ops)); -+ ops.len = len; -+ ops.datbuf = buf; -+ ops.oobbuf = NULL; -+ ops.mode = MTD_OPS_AUTO_OOB; -+ -+ ret = nand_do_read_ops(ra, from, &ops); -+ -+ *retlen = ops.retlen; -+ -+ nand_release_device(ra); -+ -+ return ret; -+ -+} -+ -+static int -+ramtd_nand_readoob(struct mtd_info *mtd, loff_t from, -+ struct mtd_oob_ops *ops) -+{ -+ struct ra_nand_chip *ra = mtd->priv; -+ int ret; -+ -+ ra_dbg("%s: \n", __func__); -+ -+ nand_get_device(ra, FL_READING); -+ -+ ret = nand_do_read_ops(ra, from, ops); -+ -+ nand_release_device(ra); -+ -+ return ret; -+} -+ -+static int -+ramtd_nand_writeoob(struct mtd_info *mtd, loff_t to, -+ struct mtd_oob_ops *ops) -+{ -+ struct ra_nand_chip *ra = mtd->priv; -+ int ret; -+ -+ nand_get_device(ra, FL_READING); -+ ret = nand_do_write_ops(ra, to, ops); -+ nand_release_device(ra); -+ -+ return ret; -+} -+ -+static int -+ramtd_nand_block_isbad(struct mtd_info *mtd, loff_t offs) -+{ -+ if (offs > mtd->size) -+ return -EINVAL; -+ -+ return nand_block_checkbad((struct ra_nand_chip *)mtd->priv, offs); -+} -+ -+static int -+ramtd_nand_block_markbad(struct mtd_info *mtd, loff_t ofs) -+{ -+ struct ra_nand_chip *ra = mtd->priv; -+ int ret; -+ -+ ra_dbg("%s: \n", __func__); -+ nand_get_device(ra, FL_WRITING); -+ ret = nand_block_markbad(ra, ofs); -+ nand_release_device(ra); -+ -+ return ret; -+} -+ -+// 1-bit error detection -+static int one_bit_correction(char *ecc1, char *ecc2, int *bytes, int *bits) -+{ -+ // check if ecc and expected are all valid -+ char *p, nibble, crumb; -+ int i, xor, iecc1 = 0, iecc2 = 0; -+ -+ printk("correction : %x %x %x\n", ecc1[0], ecc1[1], ecc1[2]); -+ printk("correction : %x %x %x\n", ecc2[0], ecc2[1], ecc2[2]); -+ -+ p = (char *)ecc1; -+ for (i = 0; i < CONFIG_ECC_BYTES; i++) -+ { -+ nibble = *(p+i) & 0xf; -+ if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) && -+ (nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9)) -+ return -1; -+ nibble = ((*(p+i)) >> 4) & 0xf; -+ if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) && -+ (nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9)) -+ return -1; -+ } -+ -+ p = (char *)ecc2; -+ for (i = 0; i < CONFIG_ECC_BYTES; i++) -+ { -+ nibble = *(p+i) & 0xf; -+ if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) && -+ (nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9)) -+ return -1; -+ nibble = ((*(p+i)) >> 4) & 0xf; -+ if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) && -+ (nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9)) -+ return -1; -+ } -+ -+ memcpy(&iecc1, ecc1, 3); -+ memcpy(&iecc2, ecc2, 3); -+ -+ xor = iecc1 ^ iecc2; -+ printk("xor = %x (%x %x)\n", xor, iecc1, iecc2); -+ -+ *bytes = 0; -+ for (i = 0; i < 9; i++) -+ { -+ crumb = (xor >> (2*i)) & 0x3; -+ if ((crumb == 0x0) || (crumb == 0x3)) -+ return -1; -+ if (crumb == 0x2) -+ *bytes += (1 << i); -+ } -+ -+ *bits = 0; -+ for (i = 0; i < 3; i++) -+ { -+ crumb = (xor >> (18 + 2*i)) & 0x3; -+ if ((crumb == 0x0) || (crumb == 0x3)) -+ return -1; -+ if (crumb == 0x2) -+ *bits += (1 << i); -+ } -+ -+ return 0; -+} -+ -+ -+ -+/************************************************************ -+ * the init/exit section. -+ */ -+ -+static struct nand_ecclayout ra_oob_layout = { -+ .eccbytes = CONFIG_ECC_BYTES, -+ .eccpos = {5, 6, 7}, -+ .oobfree = { -+ {.offset = 0, .length = 4}, -+ {.offset = 8, .length = 8}, -+ {.offset = 0, .length = 0} -+ }, -+#define RA_CHIP_OOB_AVAIL (4+8) -+ .oobavail = RA_CHIP_OOB_AVAIL, -+ // 5th byte is bad-block flag. -+}; -+ -+static int -+mtk_nand_probe(struct platform_device *pdev) -+{ -+ struct mtd_part_parser_data ppdata; -+ struct ra_nand_chip *ra; -+ int alloc_size, bbt_size, buffers_size, reg, err; -+ unsigned char chip_mode = 12; -+ -+/* if(ra_check_flash_type()!=BOOT_FROM_NAND) { -+ return 0; -+ }*/ -+ -+ //FIXME: config 512 or 2048-byte page according to HWCONF -+#if defined (CONFIG_RALINK_RT6855A) -+ reg = ra_inl(RALINK_SYSCTL_BASE+0x8c); -+ chip_mode = ((reg>>28) & 0x3)|(((reg>>22) & 0x3)<<2); -+ if (chip_mode == 1) { -+ printk("! nand 2048\n"); -+ ra_or(NFC_CONF1, 1); -+ is_nand_page_2048 = 1; -+ nand_addrlen = 5; -+ } -+ else { -+ printk("! nand 512\n"); -+ ra_and(NFC_CONF1, ~1); -+ is_nand_page_2048 = 0; -+ nand_addrlen = 4; -+ } -+#elif (defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_RT6855)) -+ ra_outl(RALINK_SYSCTL_BASE+0x60, ra_inl(RALINK_SYSCTL_BASE+0x60) & ~(0x3<<18)); -+ reg = ra_inl(RALINK_SYSCTL_BASE+0x10); -+ chip_mode = (reg & 0x0F); -+ if((chip_mode==1)||(chip_mode==11)) { -+ ra_or(NFC_CONF1, 1); -+ is_nand_page_2048 = 1; -+ nand_addrlen = ((chip_mode!=11) ? 4 : 5); -+ printk("!!! nand page size = 2048, addr len=%d\n", nand_addrlen); -+ } -+ else { -+ ra_and(NFC_CONF1, ~1); -+ is_nand_page_2048 = 0; -+ nand_addrlen = ((chip_mode!=10) ? 3 : 4); -+ printk("!!! nand page size = 512, addr len=%d\n", nand_addrlen); -+ } -+#else -+ is_nand_page_2048 = 0; -+ nand_addrlen = 3; -+ printk("!!! nand page size = 512, addr len=%d\n", nand_addrlen); -+#endif -+ -+#if defined (CONFIG_RALINK_RT6855A) || defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_RT6855) -+ //config ECC location -+ ra_and(NFC_CONF1, 0xfff000ff); -+ ra_or(NFC_CONF1, ((CONFIG_ECC_OFFSET + 2) << 16) + -+ ((CONFIG_ECC_OFFSET + 1) << 12) + -+ (CONFIG_ECC_OFFSET << 8)); -+#endif -+ -+#define ALIGNE_16(a) (((unsigned long)(a)+15) & ~15) -+ buffers_size = ALIGNE_16((1<<CONFIG_PAGE_SIZE_BIT) + (1<<CONFIG_OOBSIZE_PER_PAGE_BIT)); //ra->buffers -+ bbt_size = BBTTAG_BITS * (1<<(CONFIG_CHIP_SIZE_BIT - (CONFIG_PAGE_SIZE_BIT + CONFIG_NUMPAGE_PER_BLOCK_BIT))) / 8; //ra->bbt -+ bbt_size = ALIGNE_16(bbt_size); -+ -+ alloc_size = buffers_size + bbt_size; -+ alloc_size += buffers_size; //for ra->readback_buffers -+ alloc_size += sizeof(*ra); -+ alloc_size += sizeof(*ranfc_mtd); -+ -+ //make sure gpio-0 is input -+ ra_outl(RALINK_PIO_BASE+0x24, ra_inl(RALINK_PIO_BASE+0x24) & ~0x01); -+ -+ ra = (struct ra_nand_chip *)kzalloc(alloc_size, GFP_KERNEL | GFP_DMA); -+ if (!ra) { -+ printk("%s: mem alloc fail \n", __func__); -+ return -ENOMEM; -+ } -+ memset(ra, 0, alloc_size); -+ -+ //dynamic -+ ra->buffers = (char *)((char *)ra + sizeof(*ra)); -+ ra->readback_buffers = ra->buffers + buffers_size; -+ ra->bbt = ra->readback_buffers + buffers_size; -+ ranfc_mtd = (struct mtd_info *)(ra->bbt + bbt_size); -+ -+ //static -+ ra->numchips = CONFIG_NUMCHIPS; -+ ra->chip_shift = CONFIG_CHIP_SIZE_BIT; -+ ra->page_shift = CONFIG_PAGE_SIZE_BIT; -+ ra->oob_shift = CONFIG_OOBSIZE_PER_PAGE_BIT; -+ ra->erase_shift = (CONFIG_PAGE_SIZE_BIT + CONFIG_NUMPAGE_PER_BLOCK_BIT); -+ ra->badblockpos = CONFIG_BAD_BLOCK_POS; -+ ra_oob_layout.eccpos[0] = CONFIG_ECC_OFFSET; -+ ra_oob_layout.eccpos[1] = CONFIG_ECC_OFFSET + 1; -+ ra_oob_layout.eccpos[2] = CONFIG_ECC_OFFSET + 2; -+ ra->oob = &ra_oob_layout; -+ ra->buffers_page = -1; -+ -+#if defined (WORKAROUND_RX_BUF_OV) -+ if (ranfc_verify) { -+ ra->sandbox_page = nand_bbt_find_sandbox(ra); -+ } -+#endif -+ ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x01); //set wp to high -+ nfc_all_reset(); -+ -+ ranfc_mtd->type = MTD_NANDFLASH; -+ ranfc_mtd->flags = MTD_CAP_NANDFLASH; -+ ranfc_mtd->size = CONFIG_NUMCHIPS * CFG_CHIPSIZE; -+ ranfc_mtd->erasesize = CFG_BLOCKSIZE; -+ ranfc_mtd->writesize = CFG_PAGESIZE; -+ ranfc_mtd->oobsize = CFG_PAGE_OOBSIZE; -+ ranfc_mtd->oobavail = RA_CHIP_OOB_AVAIL; -+ ranfc_mtd->name = "ra_nfc"; -+ //ranfc_mtd->index -+ ranfc_mtd->ecclayout = &ra_oob_layout; -+ //ranfc_mtd->numberaseregions -+ //ranfc_mtd->eraseregions -+ //ranfc_mtd->bansize -+ ranfc_mtd->_erase = ramtd_nand_erase; -+ //ranfc_mtd->point -+ //ranfc_mtd->unpoint -+ ranfc_mtd->_read = ramtd_nand_read; -+ ranfc_mtd->_write = ramtd_nand_write; -+ ranfc_mtd->_read_oob = ramtd_nand_readoob; -+ ranfc_mtd->_write_oob = ramtd_nand_writeoob; -+ //ranfc_mtd->get_fact_prot_info; ranfc_mtd->read_fact_prot_reg; -+ //ranfc_mtd->get_user_prot_info; ranfc_mtd->read_user_prot_reg; -+ //ranfc_mtd->write_user_prot_reg; ranfc_mtd->lock_user_prot_reg; -+ //ranfc_mtd->writev; ranfc_mtd->sync; ranfc_mtd->lock; ranfc_mtd->unlock; ranfc_mtd->suspend; ranfc_mtd->resume; -+ ranfc_mtd->_block_isbad = ramtd_nand_block_isbad; -+ ranfc_mtd->_block_markbad = ramtd_nand_block_markbad; -+ //ranfc_mtd->reboot_notifier -+ //ranfc_mtd->ecc_stats; -+ // subpage_sht; -+ -+ //ranfc_mtd->get_device; ranfc_mtd->put_device -+ ranfc_mtd->priv = ra; -+ -+ ranfc_mtd->owner = THIS_MODULE; -+ ra->controller = &ra->hwcontrol; -+ mutex_init(ra->controller); -+ -+ printk("%s: alloc %x, at %p , btt(%p, %x), ranfc_mtd:%p\n", -+ __func__ , alloc_size, ra, ra->bbt, bbt_size, ranfc_mtd); -+ -+ ppdata.of_node = pdev->dev.of_node; -+ err = mtd_device_parse_register(ranfc_mtd, mtk_probe_types, -+ &ppdata, NULL, 0); -+ -+ return err; -+} -+ -+static int -+mtk_nand_remove(struct platform_device *pdev) -+{ -+ struct ra_nand_chip *ra; -+ -+ if (ranfc_mtd) { -+ ra = (struct ra_nand_chip *)ranfc_mtd->priv; -+ -+ /* Deregister partitions */ -+ //del_mtd_partitions(ranfc_mtd); -+ kfree(ra); -+ } -+ return 0; -+} -+ -+static const struct of_device_id mtk_nand_match[] = { -+ { .compatible = "mtk,mt7620-nand" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, mtk_nand_match); -+ -+static struct platform_driver mtk_nand_driver = { -+ .probe = mtk_nand_probe, -+ .remove = mtk_nand_remove, -+ .driver = { -+ .name = "mt7620_nand", -+ .owner = THIS_MODULE, -+ .of_match_table = mtk_nand_match, -+ }, -+}; -+ -+module_platform_driver(mtk_nand_driver); -+ -+ -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/drivers/mtd/maps/ralink_nand.h -@@ -0,0 +1,232 @@ -+#ifndef RT2880_NAND_H -+#define RT2880_NAND_H -+ -+#include <linux/mtd/mtd.h> -+ -+//#include "gdma.h" -+ -+#define RALINK_SYSCTL_BASE 0xB0000000 -+#define RALINK_PIO_BASE 0xB0000600 -+#define RALINK_NAND_CTRL_BASE 0xB0000810 -+#define CONFIG_RALINK_MT7620 -+ -+#define SKIP_BAD_BLOCK -+//#define RANDOM_GEN_BAD_BLOCK -+ -+#define ra_inl(addr) (*(volatile unsigned int *)(addr)) -+#define ra_outl(addr, value) (*(volatile unsigned int *)(addr) = (value)) -+#define ra_aor(addr, a_mask, o_value) ra_outl(addr, (ra_inl(addr) & (a_mask)) | (o_value)) -+#define ra_and(addr, a_mask) ra_aor(addr, a_mask, 0) -+#define ra_or(addr, o_value) ra_aor(addr, -1, o_value) -+ -+ -+#define CONFIG_NUMCHIPS 1 -+#define CONFIG_NOT_SUPPORT_WP //rt3052 has no WP signal for chip. -+//#define CONFIG_NOT_SUPPORT_RB -+ -+extern int is_nand_page_2048; -+extern const unsigned int nand_size_map[2][3]; -+ -+//chip -+// chip geometry: SAMSUNG small size 32MB. -+#define CONFIG_CHIP_SIZE_BIT (nand_size_map[is_nand_page_2048][nand_addrlen-3]) //! (1<<NAND_SIZE_BYTE) MB -+//#define CONFIG_CHIP_SIZE_BIT (is_nand_page_2048? 29 : 25) //! (1<<NAND_SIZE_BYTE) MB -+#define CONFIG_PAGE_SIZE_BIT (is_nand_page_2048? 11 : 9) //! (1<<PAGE_SIZE) MB -+//#define CONFIG_SUBPAGE_BIT 1 //! these bits will be compensate by command cycle -+#define CONFIG_NUMPAGE_PER_BLOCK_BIT (is_nand_page_2048? 6 : 5) //! order of number of pages a block. -+#define CONFIG_OOBSIZE_PER_PAGE_BIT (is_nand_page_2048? 6 : 4) //! byte number of oob a page. -+#define CONFIG_BAD_BLOCK_POS (is_nand_page_2048? 0 : 4) //! offset of byte to denote bad block. -+#define CONFIG_ECC_BYTES 3 //! ecc has 3 bytes -+#define CONFIG_ECC_OFFSET (is_nand_page_2048? 6 : 5) //! ecc starts from offset 5. -+ -+//this section should not be modified. -+//#define CFG_COLUMN_ADDR_MASK ((1 << (CONFIG_PAGE_SIZE_BIT - CONFIG_SUBPAGE_BIT)) - 1) -+//#define CFG_COLUMN_ADDR_CYCLE (((CONFIG_PAGE_SIZE_BIT - CONFIG_SUBPAGE_BIT) + 7)/8) -+//#define CFG_ROW_ADDR_CYCLE ((CONFIG_CHIP_SIZE_BIT - CONFIG_PAGE_SIZE_BIT + 7)/8) -+//#define CFG_ADDR_CYCLE (CFG_COLUMN_ADDR_CYCLE + CFG_ROW_ADDR_CYCLE) -+ -+#define CFG_COLUMN_ADDR_CYCLE (is_nand_page_2048? 2 : 1) -+#define CFG_ROW_ADDR_CYCLE (nand_addrlen - CFG_COLUMN_ADDR_CYCLE) -+#define CFG_ADDR_CYCLE (CFG_COLUMN_ADDR_CYCLE + CFG_ROW_ADDR_CYCLE) -+ -+#define CFG_CHIPSIZE (1 << ((CONFIG_CHIP_SIZE_BIT>=32)? 31 : CONFIG_CHIP_SIZE_BIT)) -+//#define CFG_CHIPSIZE (1 << CONFIG_CHIP_SIZE_BIT) -+#define CFG_PAGESIZE (1 << CONFIG_PAGE_SIZE_BIT) -+#define CFG_BLOCKSIZE (CFG_PAGESIZE << CONFIG_NUMPAGE_PER_BLOCK_BIT) -+#define CFG_NUMPAGE (1 << (CONFIG_CHIP_SIZE_BIT - CONFIG_PAGE_SIZE_BIT)) -+#define CFG_NUMBLOCK (CFG_NUMPAGE >> CONFIG_NUMPAGE_PER_BLOCK_BIT) -+#define CFG_BLOCK_OOBSIZE (1 << (CONFIG_OOBSIZE_PER_PAGE_BIT + CONFIG_NUMPAGE_PER_BLOCK_BIT)) -+#define CFG_PAGE_OOBSIZE (1 << CONFIG_OOBSIZE_PER_PAGE_BIT) -+ -+#define NAND_BLOCK_ALIGN(addr) ((addr) & (CFG_BLOCKSIZE-1)) -+#define NAND_PAGE_ALIGN(addr) ((addr) & (CFG_PAGESIZE-1)) -+ -+ -+#define NFC_BASE RALINK_NAND_CTRL_BASE -+#define NFC_CTRL (NFC_BASE + 0x0) -+#define NFC_CONF (NFC_BASE + 0x4) -+#define NFC_CMD1 (NFC_BASE + 0x8) -+#define NFC_CMD2 (NFC_BASE + 0xc) -+#define NFC_CMD3 (NFC_BASE + 0x10) -+#define NFC_ADDR (NFC_BASE + 0x14) -+#define NFC_DATA (NFC_BASE + 0x18) -+#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \ -+ defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621) -+#define NFC_ECC (NFC_BASE + 0x30) -+#else -+#define NFC_ECC (NFC_BASE + 0x1c) -+#endif -+#define NFC_STATUS (NFC_BASE + 0x20) -+#define NFC_INT_EN (NFC_BASE + 0x24) -+#define NFC_INT_ST (NFC_BASE + 0x28) -+#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \ -+ defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621) -+#define NFC_CONF1 (NFC_BASE + 0x2c) -+#define NFC_ECC_P1 (NFC_BASE + 0x30) -+#define NFC_ECC_P2 (NFC_BASE + 0x34) -+#define NFC_ECC_P3 (NFC_BASE + 0x38) -+#define NFC_ECC_P4 (NFC_BASE + 0x3c) -+#define NFC_ECC_ERR1 (NFC_BASE + 0x40) -+#define NFC_ECC_ERR2 (NFC_BASE + 0x44) -+#define NFC_ECC_ERR3 (NFC_BASE + 0x48) -+#define NFC_ECC_ERR4 (NFC_BASE + 0x4c) -+#define NFC_ADDR2 (NFC_BASE + 0x50) -+#endif -+ -+enum _int_stat { -+ INT_ST_ND_DONE = 1<<0, -+ INT_ST_TX_BUF_RDY = 1<<1, -+ INT_ST_RX_BUF_RDY = 1<<2, -+ INT_ST_ECC_ERR = 1<<3, -+ INT_ST_TX_TRAS_ERR = 1<<4, -+ INT_ST_RX_TRAS_ERR = 1<<5, -+ INT_ST_TX_KICK_ERR = 1<<6, -+ INT_ST_RX_KICK_ERR = 1<<7 -+}; -+ -+ -+//#define WORKAROUND_RX_BUF_OV 1 -+ -+ -+/************************************************************* -+ * stolen from nand.h -+ *************************************************************/ -+ -+/* -+ * Standard NAND flash commands -+ */ -+#define NAND_CMD_READ0 0 -+#define NAND_CMD_READ1 1 -+#define NAND_CMD_RNDOUT 5 -+#define NAND_CMD_PAGEPROG 0x10 -+#define NAND_CMD_READOOB 0x50 -+#define NAND_CMD_ERASE1 0x60 -+#define NAND_CMD_STATUS 0x70 -+#define NAND_CMD_STATUS_MULTI 0x71 -+#define NAND_CMD_SEQIN 0x80 -+#define NAND_CMD_RNDIN 0x85 -+#define NAND_CMD_READID 0x90 -+#define NAND_CMD_ERASE2 0xd0 -+#define NAND_CMD_RESET 0xff -+ -+/* Extended commands for large page devices */ -+#define NAND_CMD_READSTART 0x30 -+#define NAND_CMD_RNDOUTSTART 0xE0 -+#define NAND_CMD_CACHEDPROG 0x15 -+ -+/* Extended commands for AG-AND device */ -+/* -+ * Note: the command for NAND_CMD_DEPLETE1 is really 0x00 but -+ * there is no way to distinguish that from NAND_CMD_READ0 -+ * until the remaining sequence of commands has been completed -+ * so add a high order bit and mask it off in the command. -+ */ -+#define NAND_CMD_DEPLETE1 0x100 -+#define NAND_CMD_DEPLETE2 0x38 -+#define NAND_CMD_STATUS_MULTI 0x71 -+#define NAND_CMD_STATUS_ERROR 0x72 -+/* multi-bank error status (banks 0-3) */ -+#define NAND_CMD_STATUS_ERROR0 0x73 -+#define NAND_CMD_STATUS_ERROR1 0x74 -+#define NAND_CMD_STATUS_ERROR2 0x75 -+#define NAND_CMD_STATUS_ERROR3 0x76 -+#define NAND_CMD_STATUS_RESET 0x7f -+#define NAND_CMD_STATUS_CLEAR 0xff -+ -+#define NAND_CMD_NONE -1 -+ -+/* Status bits */ -+#define NAND_STATUS_FAIL 0x01 -+#define NAND_STATUS_FAIL_N1 0x02 -+#define NAND_STATUS_TRUE_READY 0x20 -+#define NAND_STATUS_READY 0x40 -+#define NAND_STATUS_WP 0x80 -+ -+typedef enum { -+ FL_READY, -+ FL_READING, -+ FL_WRITING, -+ FL_ERASING, -+ FL_SYNCING, -+ FL_CACHEDPRG, -+ FL_PM_SUSPENDED, -+} nand_state_t; -+ -+/*************************************************************/ -+ -+ -+ -+typedef enum _ra_flags { -+ FLAG_NONE = 0, -+ FLAG_ECC_EN = (1<<0), -+ FLAG_USE_GDMA = (1<<1), -+ FLAG_VERIFY = (1<<2), -+} RA_FLAGS; -+ -+ -+#define BBTTAG_BITS 2 -+#define BBTTAG_BITS_MASK ((1<<BBTTAG_BITS) -1) -+enum BBT_TAG { -+ BBT_TAG_UNKNOWN = 0, //2'b01 -+ BBT_TAG_GOOD = 3, //2'b11 -+ BBT_TAG_BAD = 2, //2'b10 -+ BBT_TAG_RES = 1, //2'b01 -+}; -+ -+struct ra_nand_chip { -+ int numchips; -+ int chip_shift; -+ int page_shift; -+ int erase_shift; -+ int oob_shift; -+ int badblockpos; -+#if !defined (__UBOOT__) -+ struct mutex hwcontrol; -+ struct mutex *controller; -+#endif -+ struct nand_ecclayout *oob; -+ int state; -+ unsigned int buffers_page; -+ char *buffers; //[CFG_PAGESIZE + CFG_PAGE_OOBSIZE]; -+ char *readback_buffers; -+ unsigned char *bbt; -+#if defined (WORKAROUND_RX_BUF_OV) -+ unsigned int sandbox_page; // steal a page (block) for read ECC verification -+#endif -+ -+}; -+ -+ -+ -+//fixme, gdma api -+int nand_dma_sync(void); -+void release_dma_buf(void); -+int set_gdma_ch(unsigned long dst, -+ unsigned long src, unsigned int len, int burst_size, -+ int soft_mode, int src_req_type, int dst_req_type, -+ int src_burst_mode, int dst_burst_mode); -+ -+ -+ -+ -+#endif |