mtd: rawnand: Always store info about bad block markers in chip struct

The information about where the manufacturer puts the bad block
markers inside the bad block and in the OOB data is stored in
different places. Let's move this information to nand_chip.options
and nand_chip.badblockpos.

As this chip-specific information is not directly related to the
bad block table (BBT), we also rename the flags to NAND_BBM_*.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/nand_amd.c

@@ -45,7 +45,7 @@ static void amd_nand_decode_id(struct nand_chip *chip)
 static int amd_nand_init(struct nand_chip *chip)
 {
 	if (nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |= NAND_BBM_SECONDPAGE;
 
 	return 0;
 }

drivers/mtd/nand/raw/nand_base.c

@@ -295,11 +295,11 @@ static int nand_block_bad(struct nand_chip *chip, loff_t ofs)
 	int page, page_end, res;
 	u8 bad;
 
-	if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
+	if (chip->options & NAND_BBM_LASTPAGE)
 		ofs += mtd->erasesize - mtd->writesize;
 
 	page = (int)(ofs >> chip->page_shift) & chip->pagemask;
-	page_end = page + (chip->bbt_options & NAND_BBT_SCAN2NDPAGE ? 2 : 1);
+	page_end = page + ((chip->options & NAND_BBM_SECONDPAGE) ? 2 : 1);
 
 	for (; page < page_end; page++) {
 		res = chip->ecc.read_oob(chip, page);
@@ -507,7 +507,7 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
 	ops.mode = MTD_OPS_PLACE_OOB;
 
 	/* Write to first/last page(s) if necessary */
-	if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
+	if (chip->options & NAND_BBM_LASTPAGE)
 		ofs += mtd->erasesize - mtd->writesize;
 	do {
 		res = nand_do_write_oob(chip, ofs, &ops);
@@ -516,7 +516,7 @@ static int nand_default_block_markbad(struct nand_chip *chip, loff_t ofs)
 
 		i++;
 		ofs += mtd->writesize;
-	} while ((chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2);
+	} while ((chip->options & NAND_BBM_SECONDPAGE) && i < 2);
 
 	return ret;
 }
@@ -4513,9 +4513,9 @@ static void nand_decode_bbm_options(struct nand_chip *chip)
 
 	/* Set the bad block position */
 	if (mtd->writesize > 512 || (chip->options & NAND_BUSWIDTH_16))
-		chip->badblockpos = NAND_LARGE_BADBLOCK_POS;
+		chip->badblockpos = NAND_BBM_POS_LARGE;
 	else
-		chip->badblockpos = NAND_SMALL_BADBLOCK_POS;
+		chip->badblockpos = NAND_BBM_POS_SMALL;
 }
 
 static inline bool is_full_id_nand(struct nand_flash_dev *type)

drivers/mtd/nand/raw/nand_bbt.c

@@ -468,7 +468,7 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
 
 	pr_info("Scanning device for bad blocks\n");
 
-	if (bd->options & NAND_BBT_SCAN2NDPAGE)
+	if (this->options & NAND_BBM_SECONDPAGE)
 		numpages = 2;
 	else
 		numpages = 1;
@@ -489,7 +489,7 @@ static int create_bbt(struct nand_chip *this, uint8_t *buf,
 		from = (loff_t)startblock << this->bbt_erase_shift;
 	}
 
-	if (this->bbt_options & NAND_BBT_SCANLASTPAGE)
+	if (this->options & NAND_BBM_LASTPAGE)
 		from += mtd->erasesize - (mtd->writesize * numpages);
 
 	for (i = startblock; i < numblocks; i++) {

drivers/mtd/nand/raw/nand_esmt.c

@@ -36,7 +36,7 @@ static void esmt_nand_decode_id(struct nand_chip *chip)
 static int esmt_nand_init(struct nand_chip *chip)
 {
 	if (nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |= NAND_BBM_SECONDPAGE;
 
 	return 0;
 }

drivers/mtd/nand/raw/nand_hynix.c

@@ -688,9 +688,9 @@ static int hynix_nand_init(struct nand_chip *chip)
 	int ret;
 
 	if (!nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCANLASTPAGE;
+		chip->options |= NAND_BBM_LASTPAGE;
 	else
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |= NAND_BBM_SECONDPAGE;
 
 	hynix = kzalloc(sizeof(*hynix), GFP_KERNEL);
 	if (!hynix)

drivers/mtd/nand/raw/nand_macronix.c

@@ -62,7 +62,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip)
 static int macronix_nand_init(struct nand_chip *chip)
 {
 	if (nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |= NAND_BBM_SECONDPAGE;
 
 	macronix_nand_fix_broken_get_timings(chip);
 

drivers/mtd/nand/raw/nand_micron.c

@@ -448,7 +448,7 @@ static int micron_nand_init(struct nand_chip *chip)
 		goto err_free_manuf_data;
 
 	if (mtd->writesize == 2048)
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |= NAND_BBM_SECONDPAGE;
 
 	ondie = micron_supports_on_die_ecc(chip);
 

drivers/mtd/nand/raw/nand_samsung.c

@@ -131,9 +131,9 @@ static int samsung_nand_init(struct nand_chip *chip)
 		chip->options |= NAND_SAMSUNG_LP_OPTIONS;
 
 	if (!nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCANLASTPAGE;
+		chip->options |= NAND_BBM_LASTPAGE;
 	else
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |= NAND_BBM_SECONDPAGE;
 
 	return 0;
 }

drivers/mtd/nand/raw/nand_toshiba.c

@@ -152,7 +152,7 @@ static void toshiba_nand_decode_id(struct nand_chip *chip)
 static int toshiba_nand_init(struct nand_chip *chip)
 {
 	if (nand_is_slc(chip))
-		chip->bbt_options |= NAND_BBT_SCAN2NDPAGE;
+		chip->options |=  NAND_BBM_SECONDPAGE;
 
 	/* Check that chip is BENAND and ECC mode is on-die */
 	if (nand_is_slc(chip) && chip->ecc.mode == NAND_ECC_ON_DIE &&

drivers/mtd/nand/raw/sh_flctl.c

@@ -101,14 +101,12 @@ static const struct mtd_ooblayout_ops flctl_4secc_oob_largepage_ops = {
 static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
 
 static struct nand_bbt_descr flctl_4secc_smallpage = {
-	.options = NAND_BBT_SCAN2NDPAGE,
 	.offs = 11,
 	.len = 1,
 	.pattern = scan_ff_pattern,
 };
 
 static struct nand_bbt_descr flctl_4secc_largepage = {
-	.options = NAND_BBT_SCAN2NDPAGE,
 	.offs = 0,
 	.len = 2,
 	.pattern = scan_ff_pattern,
@@ -1179,6 +1177,8 @@ static int flctl_probe(struct platform_device *pdev)
 	if (pdata->flcmncr_val & SEL_16BIT)
 		nand->options |= NAND_BUSWIDTH_16;
 
+	nand->options |= NAND_BBM_SECONDPAGE;
+
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_resume(&pdev->dev);
 

include/linux/mtd/rawnand.h

@@ -169,6 +169,20 @@ enum nand_ecc_algo {
 /* Macros to identify the above */
 #define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ))
 
+/*
+ * There are different places where the manufacturer stores the factory bad
+ * block markers.
+ *
+ * Position within the block: Each of these pages needs to be checked for a
+ * bad block marking pattern.
+ */
+#define NAND_BBM_SECONDPAGE		0x02000000
+#define NAND_BBM_LASTPAGE		0x04000000
+
+/* Position within the OOB data of the page */
+#define NAND_BBM_POS_SMALL		5
+#define NAND_BBM_POS_LARGE		0
+
 /* Non chip related options */
 /* This option skips the bbt scan during initialization. */
 #define NAND_SKIP_BBTSCAN	0x00010000
@@ -1055,7 +1069,7 @@ struct nand_chip {
 
 	int subpagesize;
 	int onfi_timing_mode_default;
-	int badblockpos;
+	unsigned int badblockpos;
 	int badblockbits;
 
 	struct nand_id id;