mtd: docg3: add write functions
Add write capability to the docg3 driver. The writes are possible on a single page (512 bytes + 16 bytes), even if that page is split on 2 physical pages on 2 blocks (each on one plane). Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com> Reviewed-by: Mike Dunn <mikedunn@newsguy.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Robert Jarzmik
David Woodhouse
Родитель
316e627edc
Коммит
fb50b58e48
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@ -253,6 +253,40 @@ static void doc_read_data_area(struct docg3 *docg3, void *buf, int len,
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}
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}
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/**
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* doc_write_data_area - Write data into data area
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* @docg3: the device
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* @buf: the buffer to get input bytes from
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* @len: the length to write
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*
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* Writes bytes into flash data. Handles the single byte / even bytes writes.
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*/
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static void doc_write_data_area(struct docg3 *docg3, const void *buf, int len)
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{
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int i, cdr, len4;
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u16 *src16;
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u8 *src8;
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doc_dbg("doc_write_data_area(buf=%p, len=%d)\n", buf, len);
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cdr = len & 0x3;
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len4 = len - cdr;
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doc_writew(docg3, DOC_IOSPACE_DATA, DOC_READADDRESS);
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src16 = (u16 *)buf;
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for (i = 0; i < len4; i += 2) {
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doc_writew(docg3, *src16, DOC_IOSPACE_DATA);
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src16++;
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}
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src8 = (u8 *)src16;
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for (i = 0; i < cdr; i++) {
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doc_writew(docg3, DOC_IOSPACE_DATA | DOC_READADDR_ONE_BYTE,
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DOC_READADDRESS);
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doc_writeb(docg3, *src8, DOC_IOSPACE_DATA);
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src8++;
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}
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}
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/**
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* doc_set_data_mode - Sets the flash to reliable data mode
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* @docg3: the device
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@ -342,6 +376,37 @@ static int doc_set_extra_page_mode(struct docg3 *docg3)
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return 0;
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}
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/**
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* doc_setup_addr_sector - Setup blocks/page/ofs address for one plane
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* @docg3: the device
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* @sector: the sector
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*/
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static void doc_setup_addr_sector(struct docg3 *docg3, int sector)
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{
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doc_delay(docg3, 1);
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doc_flash_address(docg3, sector & 0xff);
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doc_flash_address(docg3, (sector >> 8) & 0xff);
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doc_flash_address(docg3, (sector >> 16) & 0xff);
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doc_delay(docg3, 1);
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}
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/**
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* doc_setup_writeaddr_sector - Setup blocks/page/ofs address for one plane
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* @docg3: the device
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* @sector: the sector
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* @ofs: the offset in the page, between 0 and (512 + 16 + 512)
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*/
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static void doc_setup_writeaddr_sector(struct docg3 *docg3, int sector, int ofs)
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{
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ofs = ofs >> 2;
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doc_delay(docg3, 1);
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doc_flash_address(docg3, ofs & 0xff);
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doc_flash_address(docg3, sector & 0xff);
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doc_flash_address(docg3, (sector >> 8) & 0xff);
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doc_flash_address(docg3, (sector >> 16) & 0xff);
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doc_delay(docg3, 1);
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}
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/**
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* doc_seek - Set both flash planes to the specified block, page for reading
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* @docg3: the device
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@ -378,27 +443,73 @@ static int doc_read_seek(struct docg3 *docg3, int block0, int block1, int page,
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if (ret)
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goto out;
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sector = (block0 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK);
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doc_flash_sequence(docg3, DOC_SEQ_READ);
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sector = (block0 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK);
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doc_flash_command(docg3, DOC_CMD_PROG_BLOCK_ADDR);
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doc_delay(docg3, 1);
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doc_flash_address(docg3, sector & 0xff);
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doc_flash_address(docg3, (sector >> 8) & 0xff);
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doc_flash_address(docg3, (sector >> 16) & 0xff);
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doc_delay(docg3, 1);
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doc_setup_addr_sector(docg3, sector);
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sector = (block1 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK);
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doc_flash_command(docg3, DOC_CMD_PROG_BLOCK_ADDR);
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doc_setup_addr_sector(docg3, sector);
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doc_delay(docg3, 1);
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doc_flash_address(docg3, sector & 0xff);
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doc_flash_address(docg3, (sector >> 8) & 0xff);
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doc_flash_address(docg3, (sector >> 16) & 0xff);
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doc_delay(docg3, 2);
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out:
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return ret;
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}
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/**
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* doc_write_seek - Set both flash planes to the specified block, page for writing
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* @docg3: the device
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* @block0: the first plane block index
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* @block1: the second plane block index
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* @page: the page index within the block
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* @ofs: offset in page to write
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*
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* Programs the flash even and odd planes to the specific block and page.
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* Alternatively, programs the flash to the wear area of the specified page.
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*/
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static int doc_write_seek(struct docg3 *docg3, int block0, int block1, int page,
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int ofs)
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{
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int ret = 0, sector;
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doc_dbg("doc_write_seek(blocks=(%d,%d), page=%d, ofs=%d)\n",
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block0, block1, page, ofs);
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doc_set_reliable_mode(docg3);
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if (ofs < 2 * DOC_LAYOUT_PAGE_SIZE) {
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doc_flash_sequence(docg3, DOC_SEQ_SET_PLANE1);
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doc_flash_command(docg3, DOC_CMD_READ_PLANE1);
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doc_delay(docg3, 2);
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} else {
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doc_flash_sequence(docg3, DOC_SEQ_SET_PLANE2);
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doc_flash_command(docg3, DOC_CMD_READ_PLANE2);
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doc_delay(docg3, 2);
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}
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doc_flash_sequence(docg3, DOC_SEQ_PAGE_SETUP);
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doc_flash_command(docg3, DOC_CMD_PROG_CYCLE1);
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sector = (block0 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK);
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doc_setup_writeaddr_sector(docg3, sector, ofs);
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doc_flash_command(docg3, DOC_CMD_PROG_CYCLE3);
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doc_delay(docg3, 2);
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ret = doc_wait_ready(docg3);
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if (ret)
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goto out;
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doc_flash_command(docg3, DOC_CMD_PROG_CYCLE1);
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sector = (block1 << DOC_ADDR_BLOCK_SHIFT) + (page & DOC_ADDR_PAGE_MASK);
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doc_setup_writeaddr_sector(docg3, sector, ofs);
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doc_delay(docg3, 1);
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out:
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return ret;
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}
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/**
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* doc_read_page_ecc_init - Initialize hardware ECC engine
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* @docg3: the device
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@ -420,6 +531,58 @@ static int doc_read_page_ecc_init(struct docg3 *docg3, int len)
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return doc_wait_ready(docg3);
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}
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/**
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* doc_write_page_ecc_init - Initialize hardware BCH ECC engine
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* @docg3: the device
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* @len: the number of bytes covered by the ECC (BCH covered)
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*
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* The function does initialize the hardware ECC engine to compute the Hamming
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* ECC (on 1 byte) and the BCH Syndroms (on 7 bytes).
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*
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* Return 0 if succeeded, -EIO on error
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*/
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static int doc_write_page_ecc_init(struct docg3 *docg3, int len)
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{
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doc_writew(docg3, !DOC_ECCCONF0_READ_MODE
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| DOC_ECCCONF0_BCH_ENABLE | DOC_ECCCONF0_HAMMING_ENABLE
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| (len & DOC_ECCCONF0_DATA_BYTES_MASK),
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DOC_ECCCONF0);
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doc_delay(docg3, 4);
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doc_register_readb(docg3, DOC_FLASHCONTROL);
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return doc_wait_ready(docg3);
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}
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/**
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* doc_ecc_disable - Disable Hamming and BCH ECC hardware calculator
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* @docg3: the device
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*
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* Disables the hardware ECC generator and checker, for unchecked reads (as when
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* reading OOB only or write status byte).
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*/
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static void doc_ecc_disable(struct docg3 *docg3)
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{
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doc_writew(docg3, DOC_ECCCONF0_READ_MODE, DOC_ECCCONF0);
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doc_delay(docg3, 4);
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}
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/**
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* doc_hamming_ecc_init - Initialize hardware Hamming ECC engine
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* @docg3: the device
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* @nb_bytes: the number of bytes covered by the ECC (Hamming covered)
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*
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* This function programs the ECC hardware to compute the hamming code on the
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* last provided N bytes to the hardware generator.
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*/
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static void doc_hamming_ecc_init(struct docg3 *docg3, int nb_bytes)
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{
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u8 ecc_conf1;
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ecc_conf1 = doc_register_readb(docg3, DOC_ECCCONF1);
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ecc_conf1 &= ~DOC_ECCCONF1_HAMMING_BITS_MASK;
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ecc_conf1 |= (nb_bytes & DOC_ECCCONF1_HAMMING_BITS_MASK);
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doc_writeb(docg3, ecc_conf1, DOC_ECCCONF1);
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}
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/**
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* doc_read_page_prepare - Prepares reading data from a flash page
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* @docg3: the device
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@ -505,12 +668,26 @@ static int doc_read_page_getbytes(struct docg3 *docg3, int len, u_char *buf,
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return len;
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}
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/**
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* doc_write_page_putbytes - Writes bytes into a prepared page
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* @docg3: the device
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* @len: the number of bytes to be written
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* @buf: the buffer of input bytes
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*
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*/
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static void doc_write_page_putbytes(struct docg3 *docg3, int len,
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const u_char *buf)
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{
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doc_write_data_area(docg3, buf, len);
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doc_delay(docg3, 2);
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}
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/**
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* doc_get_hw_bch_syndroms - Get hardware calculated BCH syndroms
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* @docg3: the device
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* @syns: the array of 7 integers where the syndroms will be stored
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*/
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static void doc_get_hw_bch_syndroms(struct docg3 *docg3, int *syns)
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static void doc_get_hw_bch_syndroms(struct docg3 *docg3, u8 *syns)
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{
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int i;
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@ -518,6 +695,16 @@ static void doc_get_hw_bch_syndroms(struct docg3 *docg3, int *syns)
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syns[i] = doc_register_readb(docg3, DOC_BCH_SYNDROM(i));
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}
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/**
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* doc_page_finish - Ends reading/writing of a flash page
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* @docg3: the device
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*/
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static void doc_page_finish(struct docg3 *docg3)
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{
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doc_writeb(docg3, 0, DOC_DATAEND);
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doc_delay(docg3, 2);
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}
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/**
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* doc_read_page_finish - Ends reading of a flash page
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* @docg3: the device
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@ -528,8 +715,7 @@ static void doc_get_hw_bch_syndroms(struct docg3 *docg3, int *syns)
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*/
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static void doc_read_page_finish(struct docg3 *docg3)
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{
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doc_writeb(docg3, 0, DOC_DATAEND);
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doc_delay(docg3, 2);
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doc_page_finish(docg3);
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doc_set_device_id(docg3, 0);
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}
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@ -791,6 +977,348 @@ static int doc_get_erase_count(struct docg3 *docg3, loff_t from)
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return max(plane1_erase_count, plane2_erase_count);
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}
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/**
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* doc_get_op_status - get erase/write operation status
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* @docg3: the device
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*
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* Queries the status from the chip, and returns it
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*
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* Returns the status (bits DOC_PLANES_STATUS_*)
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*/
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static int doc_get_op_status(struct docg3 *docg3)
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{
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u8 status;
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doc_flash_sequence(docg3, DOC_SEQ_PLANES_STATUS);
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doc_flash_command(docg3, DOC_CMD_PLANES_STATUS);
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doc_delay(docg3, 5);
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doc_ecc_disable(docg3);
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doc_read_data_area(docg3, &status, 1, 1);
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return status;
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}
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/**
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* doc_write_erase_wait_status - wait for write or erase completion
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* @docg3: the device
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*
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* Wait for the chip to be ready again after erase or write operation, and check
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* erase/write status.
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*
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* Returns 0 if erase successfull, -EIO if erase/write issue, -ETIMEOUT if
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* timeout
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*/
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static int doc_write_erase_wait_status(struct docg3 *docg3)
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{
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int status, ret = 0;
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if (!doc_is_ready(docg3))
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usleep_range(3000, 3000);
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if (!doc_is_ready(docg3)) {
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doc_dbg("Timeout reached and the chip is still not ready\n");
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ret = -EAGAIN;
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goto out;
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}
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status = doc_get_op_status(docg3);
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if (status & DOC_PLANES_STATUS_FAIL) {
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doc_dbg("Erase/Write failed on (a) plane(s), status = %x\n",
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status);
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ret = -EIO;
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}
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out:
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doc_page_finish(docg3);
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return ret;
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}
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/**
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* doc_write_page - Write a single page to the chip
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* @docg3: the device
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* @to: the offset from first block and first page, in bytes, aligned on page
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* size
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* @buf: buffer to get bytes from
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* @oob: buffer to get out of band bytes from (can be NULL if no OOB should be
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* written)
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* @autoecc: if 0, all 16 bytes from OOB are taken, regardless of HW Hamming or
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* BCH computations. If 1, only bytes 0-7 and byte 15 are taken,
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* remaining ones are filled with hardware Hamming and BCH
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* computations. Its value is not meaningfull is oob == NULL.
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*
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* Write one full page (ie. 1 page split on two planes), of 512 bytes, with the
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* OOB data. The OOB ECC is automatically computed by the hardware Hamming and
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* BCH generator if autoecc is not null.
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*
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* Returns 0 if write successful, -EIO if write error, -EAGAIN if timeout
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*/
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static int doc_write_page(struct docg3 *docg3, loff_t to, const u_char *buf,
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const u_char *oob, int autoecc)
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{
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int block0, block1, page, ret, ofs = 0;
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u8 syn[DOC_ECC_BCH_SIZE], hamming;
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doc_dbg("doc_write_page(to=%lld)\n", to);
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calc_block_sector(to, &block0, &block1, &page, &ofs);
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|
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doc_set_device_id(docg3, docg3->device_id);
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ret = doc_reset_seq(docg3);
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if (ret)
|
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goto err;
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|
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/* Program the flash address block and page */
|
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ret = doc_write_seek(docg3, block0, block1, page, ofs);
|
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if (ret)
|
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goto err;
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|
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doc_write_page_ecc_init(docg3, DOC_ECC_BCH_COVERED_BYTES);
|
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doc_delay(docg3, 2);
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doc_write_page_putbytes(docg3, DOC_LAYOUT_PAGE_SIZE, buf);
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|
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if (oob && autoecc) {
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doc_write_page_putbytes(docg3, DOC_LAYOUT_OOB_PAGEINFO_SZ, oob);
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doc_delay(docg3, 2);
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oob += DOC_LAYOUT_OOB_UNUSED_OFS;
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|
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hamming = doc_register_readb(docg3, DOC_HAMMINGPARITY);
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doc_delay(docg3, 2);
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doc_write_page_putbytes(docg3, DOC_LAYOUT_OOB_HAMMING_SZ,
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&hamming);
|
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doc_delay(docg3, 2);
|
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|
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doc_get_hw_bch_syndroms(docg3, syn);
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doc_write_page_putbytes(docg3, DOC_LAYOUT_OOB_BCH_SZ, syn);
|
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doc_delay(docg3, 2);
|
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|
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doc_write_page_putbytes(docg3, DOC_LAYOUT_OOB_UNUSED_SZ, oob);
|
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}
|
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if (oob && !autoecc)
|
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doc_write_page_putbytes(docg3, DOC_LAYOUT_OOB_SIZE, oob);
|
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|
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doc_delay(docg3, 2);
|
||||
doc_page_finish(docg3);
|
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doc_delay(docg3, 2);
|
||||
doc_flash_command(docg3, DOC_CMD_PROG_CYCLE2);
|
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doc_delay(docg3, 2);
|
||||
|
||||
/*
|
||||
* The wait status will perform another doc_page_finish() call, but that
|
||||
* seems to please the docg3, so leave it.
|
||||
*/
|
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ret = doc_write_erase_wait_status(docg3);
|
||||
return ret;
|
||||
err:
|
||||
doc_read_page_finish(docg3);
|
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return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* doc_guess_autoecc - Guess autoecc mode from mbd_oob_ops
|
||||
* @ops: the oob operations
|
||||
*
|
||||
* Returns 0 or 1 if success, -EINVAL if invalid oob mode
|
||||
*/
|
||||
static int doc_guess_autoecc(struct mtd_oob_ops *ops)
|
||||
{
|
||||
int autoecc;
|
||||
|
||||
switch (ops->mode) {
|
||||
case MTD_OPS_PLACE_OOB:
|
||||
case MTD_OPS_AUTO_OOB:
|
||||
autoecc = 1;
|
||||
break;
|
||||
case MTD_OPS_RAW:
|
||||
autoecc = 0;
|
||||
break;
|
||||
default:
|
||||
autoecc = -EINVAL;
|
||||
}
|
||||
return autoecc;
|
||||
}
|
||||
|
||||
/**
|
||||
* doc_fill_autooob - Fill a 16 bytes OOB from 8 non-ECC bytes
|
||||
* @dst: the target 16 bytes OOB buffer
|
||||
* @oobsrc: the source 8 bytes non-ECC OOB buffer
|
||||
*
|
||||
*/
|
||||
static void doc_fill_autooob(u8 *dst, u8 *oobsrc)
|
||||
{
|
||||
memcpy(dst, oobsrc, DOC_LAYOUT_OOB_PAGEINFO_SZ);
|
||||
dst[DOC_LAYOUT_OOB_UNUSED_OFS] = oobsrc[DOC_LAYOUT_OOB_PAGEINFO_SZ];
|
||||
}
|
||||
|
||||
/**
|
||||
* doc_backup_oob - Backup OOB into docg3 structure
|
||||
* @docg3: the device
|
||||
* @to: the page offset in the chip
|
||||
* @ops: the OOB size and buffer
|
||||
*
|
||||
* As the docg3 should write a page with its OOB in one pass, and some userland
|
||||
* applications do write_oob() to setup the OOB and then write(), store the OOB
|
||||
* into a temporary storage. This is very dangerous, as 2 concurrent
|
||||
* applications could store an OOB, and then write their pages (which will
|
||||
* result into one having its OOB corrupted).
|
||||
*
|
||||
* The only reliable way would be for userland to call doc_write_oob() with both
|
||||
* the page data _and_ the OOB area.
|
||||
*
|
||||
* Returns 0 if success, -EINVAL if ops content invalid
|
||||
*/
|
||||
static int doc_backup_oob(struct docg3 *docg3, loff_t to,
|
||||
struct mtd_oob_ops *ops)
|
||||
{
|
||||
int ooblen = ops->ooblen, autoecc;
|
||||
|
||||
if (ooblen != DOC_LAYOUT_OOB_SIZE)
|
||||
return -EINVAL;
|
||||
autoecc = doc_guess_autoecc(ops);
|
||||
if (autoecc < 0)
|
||||
return autoecc;
|
||||
|
||||
docg3->oob_write_ofs = to;
|
||||
docg3->oob_autoecc = autoecc;
|
||||
if (ops->mode == MTD_OPS_AUTO_OOB) {
|
||||
doc_fill_autooob(docg3->oob_write_buf, ops->oobbuf);
|
||||
ops->oobretlen = 8;
|
||||
} else {
|
||||
memcpy(docg3->oob_write_buf, ops->oobbuf, DOC_LAYOUT_OOB_SIZE);
|
||||
ops->oobretlen = DOC_LAYOUT_OOB_SIZE;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* doc_write_oob - Write out of band bytes to flash
|
||||
* @mtd: the device
|
||||
* @ofs: the offset from first block and first page, in bytes, aligned on page
|
||||
* size
|
||||
* @ops: the mtd oob structure
|
||||
*
|
||||
* Either write OOB data into a temporary buffer, for the subsequent write
|
||||
* page. The provided OOB should be 16 bytes long. If a data buffer is provided
|
||||
* as well, issue the page write.
|
||||
* Or provide data without OOB, and then a all zeroed OOB will be used (ECC will
|
||||
* still be filled in if asked for).
|
||||
*
|
||||
* Returns 0 is successfull, EINVAL if length is not 14 bytes
|
||||
*/
|
||||
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
|
||||
struct mtd_oob_ops *ops)
|
||||
{
|
||||
struct docg3 *docg3 = mtd->priv;
|
||||
int block0, block1, page, ret, pofs = 0, autoecc, oobdelta;
|
||||
u8 *oobbuf = ops->oobbuf;
|
||||
u8 *buf = ops->datbuf;
|
||||
size_t len, ooblen;
|
||||
u8 oob[DOC_LAYOUT_OOB_SIZE];
|
||||
|
||||
if (buf)
|
||||
len = ops->len;
|
||||
else
|
||||
len = 0;
|
||||
if (oobbuf)
|
||||
ooblen = ops->ooblen;
|
||||
else
|
||||
ooblen = 0;
|
||||
|
||||
if (oobbuf && ops->mode == MTD_OPS_PLACE_OOB)
|
||||
oobbuf += ops->ooboffs;
|
||||
|
||||
doc_dbg("doc_write_oob(from=%lld, mode=%d, data=(%p:%zu), oob=(%p:%zu))\n",
|
||||
ofs, ops->mode, buf, len, oobbuf, ooblen);
|
||||
switch (ops->mode) {
|
||||
case MTD_OPS_PLACE_OOB:
|
||||
case MTD_OPS_RAW:
|
||||
oobdelta = mtd->oobsize;
|
||||
break;
|
||||
case MTD_OPS_AUTO_OOB:
|
||||
oobdelta = mtd->ecclayout->oobavail;
|
||||
break;
|
||||
default:
|
||||
oobdelta = 0;
|
||||
}
|
||||
if ((len % DOC_LAYOUT_PAGE_SIZE) || (ooblen % oobdelta) ||
|
||||
(ofs % DOC_LAYOUT_PAGE_SIZE))
|
||||
return -EINVAL;
|
||||
if (len && ooblen &&
|
||||
(len / DOC_LAYOUT_PAGE_SIZE) != (ooblen / oobdelta))
|
||||
return -EINVAL;
|
||||
|
||||
ret = -EINVAL;
|
||||
calc_block_sector(ofs + len, &block0, &block1, &page, &pofs);
|
||||
if (block1 > docg3->max_block)
|
||||
goto err;
|
||||
|
||||
ops->oobretlen = 0;
|
||||
ops->retlen = 0;
|
||||
ret = 0;
|
||||
if (len == 0 && ooblen == 0)
|
||||
return -EINVAL;
|
||||
if (len == 0 && ooblen > 0)
|
||||
return doc_backup_oob(docg3, ofs, ops);
|
||||
|
||||
autoecc = doc_guess_autoecc(ops);
|
||||
if (autoecc < 0)
|
||||
return autoecc;
|
||||
|
||||
while (!ret && len > 0) {
|
||||
memset(oob, 0, sizeof(oob));
|
||||
if (ofs == docg3->oob_write_ofs)
|
||||
memcpy(oob, docg3->oob_write_buf, DOC_LAYOUT_OOB_SIZE);
|
||||
else if (ooblen > 0 && ops->mode == MTD_OPS_AUTO_OOB)
|
||||
doc_fill_autooob(oob, oobbuf);
|
||||
else if (ooblen > 0)
|
||||
memcpy(oob, oobbuf, DOC_LAYOUT_OOB_SIZE);
|
||||
ret = doc_write_page(docg3, ofs, buf, oob, autoecc);
|
||||
|
||||
ofs += DOC_LAYOUT_PAGE_SIZE;
|
||||
len -= DOC_LAYOUT_PAGE_SIZE;
|
||||
buf += DOC_LAYOUT_PAGE_SIZE;
|
||||
if (ooblen) {
|
||||
oobbuf += oobdelta;
|
||||
ooblen -= oobdelta;
|
||||
ops->oobretlen += oobdelta;
|
||||
}
|
||||
ops->retlen += DOC_LAYOUT_PAGE_SIZE;
|
||||
}
|
||||
err:
|
||||
doc_set_device_id(docg3, 0);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* doc_write - Write a buffer to the chip
|
||||
* @mtd: the device
|
||||
* @to: the offset from first block and first page, in bytes, aligned on page
|
||||
* size
|
||||
* @len: the number of bytes to write (must be a full page size, ie. 512)
|
||||
* @retlen: the number of bytes actually written (0 or 512)
|
||||
* @buf: the buffer to get bytes from
|
||||
*
|
||||
* Writes data to the chip.
|
||||
*
|
||||
* Returns 0 if write successful, -EIO if write error
|
||||
*/
|
||||
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
|
||||
size_t *retlen, const u_char *buf)
|
||||
{
|
||||
struct docg3 *docg3 = mtd->priv;
|
||||
int ret;
|
||||
struct mtd_oob_ops ops;
|
||||
|
||||
doc_dbg("doc_write(to=%lld, len=%zu)\n", to, len);
|
||||
ops.datbuf = (char *)buf;
|
||||
ops.len = len;
|
||||
ops.mode = MTD_OPS_PLACE_OOB;
|
||||
ops.oobbuf = NULL;
|
||||
ops.ooblen = 0;
|
||||
ops.ooboffs = 0;
|
||||
|
||||
ret = doc_write_oob(mtd, to, &ops);
|
||||
*retlen = ops.retlen;
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Debug sysfs entries
|
||||
*/
|
||||
|
|
@ -1052,6 +1580,7 @@ static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
|
|||
|
||||
doc_set_driver_info(chip_id, mtd);
|
||||
|
||||
doc_hamming_ecc_init(docg3, DOC_LAYOUT_OOB_PAGEINFO_SZ);
|
||||
doc_reload_bbt(docg3);
|
||||
return mtd;
|
||||
|
||||
|
|
|
|||
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