NAND: Added support for 128-bit OOB, adapted
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
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31ca020861
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248ae5cfc8
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@ -113,18 +113,22 @@ static struct nand_oobinfo nand_oob_64 = {
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.oobfree = { {2, 38} }
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.oobfree = { {2, 38} }
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};
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};
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/* This is used for padding purposes in nand_write_oob */
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static struct nand_oobinfo nand_oob_128 = {
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static u_char ffchars[] = {
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.useecc = MTD_NANDECC_AUTOPLACE,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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.eccbytes = 48,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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.eccpos = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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80, 81, 82, 83, 84, 85, 86, 87,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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88, 89, 90, 91, 92, 93, 94, 95,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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96, 97, 98, 99, 100, 101, 102, 103,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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104, 105, 106, 107, 108, 109, 110, 111,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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112, 113, 114, 115, 116, 117, 118, 119,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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120, 121, 122, 123, 124, 125, 126, 127},
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.oobfree = { {2, 78} }
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};
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};
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/* This is used for padding purposes in nand_write_oob */
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static u_char *ffchars;
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/*
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/*
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* NAND low-level MTD interface functions
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* NAND low-level MTD interface functions
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*/
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*/
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@ -193,6 +197,10 @@ static void nand_release_device (struct mtd_info *mtd)
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{
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{
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struct nand_chip *this = mtd->priv;
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struct nand_chip *this = mtd->priv;
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this->select_chip(mtd, -1); /* De-select the NAND device */
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this->select_chip(mtd, -1); /* De-select the NAND device */
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if (ffchars) {
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kfree(ffchars);
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ffchars = NULL;
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}
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}
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}
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#endif
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#endif
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@ -891,7 +899,7 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa
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u_char *oob_buf, struct nand_oobinfo *oobsel, int cached)
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u_char *oob_buf, struct nand_oobinfo *oobsel, int cached)
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{
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{
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int i, status;
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int i, status;
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u_char ecc_code[32];
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u_char ecc_code[NAND_MAX_OOBSIZE];
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int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
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int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
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uint *oob_config = oobsel->eccpos;
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uint *oob_config = oobsel->eccpos;
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int datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
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int datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
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@ -1112,8 +1120,8 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
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int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0;
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int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0;
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struct nand_chip *this = mtd->priv;
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struct nand_chip *this = mtd->priv;
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u_char *data_poi, *oob_data = oob_buf;
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u_char *data_poi, *oob_data = oob_buf;
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u_char ecc_calc[32];
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u_char ecc_calc[NAND_MAX_OOBSIZE];
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u_char ecc_code[32];
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u_char ecc_code[NAND_MAX_OOBSIZE];
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int eccmode, eccsteps;
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int eccmode, eccsteps;
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unsigned *oob_config;
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unsigned *oob_config;
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int datidx;
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int datidx;
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@ -1811,6 +1819,15 @@ static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t *
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if (NAND_MUST_PAD(this)) {
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if (NAND_MUST_PAD(this)) {
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/* Write out desired data */
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/* Write out desired data */
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this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
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this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
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if (!ffchars) {
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if (!(ffchars = kmalloc (mtd->oobsize, GFP_KERNEL))) {
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DEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: "
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"No memory for padding array, need %d bytes", mtd->oobsize);
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ret = -ENOMEM;
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goto out;
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}
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memset(ffchars, 0xff, mtd->oobsize);
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}
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/* prepad 0xff for partial programming */
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/* prepad 0xff for partial programming */
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this->write_buf(mtd, ffchars, column);
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this->write_buf(mtd, ffchars, column);
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/* write data */
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/* write data */
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@ -2479,6 +2496,9 @@ int nand_scan (struct mtd_info *mtd, int maxchips)
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case 64:
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case 64:
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this->autooob = &nand_oob_64;
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this->autooob = &nand_oob_64;
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break;
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break;
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case 128:
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this->autooob = &nand_oob_128;
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break;
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default:
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default:
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printk (KERN_WARNING "No oob scheme defined for oobsize %d\n",
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printk (KERN_WARNING "No oob scheme defined for oobsize %d\n",
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mtd->oobsize);
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mtd->oobsize);
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@ -93,7 +93,7 @@ struct nand_oobinfo {
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uint32_t useecc;
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uint32_t useecc;
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uint32_t eccbytes;
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uint32_t eccbytes;
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uint32_t oobfree[8][2];
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uint32_t oobfree[8][2];
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uint32_t eccpos[32];
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uint32_t eccpos[48];
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};
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};
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#endif /* __MTD_ABI_H__ */
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#endif /* __MTD_ABI_H__ */
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