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path: root/drivers/mtd/nand/raw/nandsim.c
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Diffstat (limited to 'drivers/mtd/nand/raw/nandsim.c')
-rw-r--r--drivers/mtd/nand/raw/nandsim.c84
1 files changed, 46 insertions, 38 deletions
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index f8edacde49ab..71ac034aee9c 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -2192,6 +2192,48 @@ static void ns_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
return;
}
+static int ns_attach_chip(struct nand_chip *chip)
+{
+ unsigned int eccsteps, eccbytes;
+
+ if (!bch)
+ return 0;
+
+ if (!mtd_nand_has_bch()) {
+ NS_ERR("BCH ECC support is disabled\n");
+ return -EINVAL;
+ }
+
+ /* Use 512-byte ecc blocks */
+ eccsteps = nsmtd->writesize / 512;
+ eccbytes = ((bch * 13) + 7) / 8;
+
+ /* Do not bother supporting small page devices */
+ if (nsmtd->oobsize < 64 || !eccsteps) {
+ NS_ERR("BCH not available on small page devices\n");
+ return -EINVAL;
+ }
+
+ if (((eccbytes * eccsteps) + 2) > nsmtd->oobsize) {
+ NS_ERR("Invalid BCH value %u\n", bch);
+ return -EINVAL;
+ }
+
+ chip->ecc.mode = NAND_ECC_SOFT;
+ chip->ecc.algo = NAND_ECC_BCH;
+ chip->ecc.size = 512;
+ chip->ecc.strength = bch;
+ chip->ecc.bytes = eccbytes;
+
+ NS_INFO("Using %u-bit/%u bytes BCH ECC\n", bch, chip->ecc.size);
+
+ return 0;
+}
+
+static const struct nand_controller_ops ns_controller_ops = {
+ .attach_chip = ns_attach_chip,
+};
+
/*
* Module initialization function
*/
@@ -2276,44 +2318,10 @@ static int __init ns_init_module(void)
if ((retval = parse_gravepages()) != 0)
goto error;
- retval = nand_scan_ident(nsmtd, 1, NULL);
- if (retval) {
- NS_ERR("cannot scan NAND Simulator device\n");
- goto error;
- }
-
- if (bch) {
- unsigned int eccsteps, eccbytes;
- if (!mtd_nand_has_bch()) {
- NS_ERR("BCH ECC support is disabled\n");
- retval = -EINVAL;
- goto error;
- }
- /* use 512-byte ecc blocks */
- eccsteps = nsmtd->writesize/512;
- eccbytes = (bch*13+7)/8;
- /* do not bother supporting small page devices */
- if ((nsmtd->oobsize < 64) || !eccsteps) {
- NS_ERR("bch not available on small page devices\n");
- retval = -EINVAL;
- goto error;
- }
- if ((eccbytes*eccsteps+2) > nsmtd->oobsize) {
- NS_ERR("invalid bch value %u\n", bch);
- retval = -EINVAL;
- goto error;
- }
- chip->ecc.mode = NAND_ECC_SOFT;
- chip->ecc.algo = NAND_ECC_BCH;
- chip->ecc.size = 512;
- chip->ecc.strength = bch;
- chip->ecc.bytes = eccbytes;
- NS_INFO("using %u-bit/%u bytes BCH ECC\n", bch, chip->ecc.size);
- }
-
- retval = nand_scan_tail(nsmtd);
+ chip->dummy_controller.ops = &ns_controller_ops;
+ retval = nand_scan(nsmtd, 1);
if (retval) {
- NS_ERR("can't register NAND Simulator\n");
+ NS_ERR("Could not scan NAND Simulator device\n");
goto error;
}
@@ -2337,7 +2345,7 @@ static int __init ns_init_module(void)
if ((retval = init_nandsim(nsmtd)) != 0)
goto err_exit;
- if ((retval = chip->scan_bbt(nsmtd)) != 0)
+ if ((retval = nand_create_bbt(chip)) != 0)
goto err_exit;
if ((retval = parse_badblocks(nand, nsmtd)) != 0)