10 #define pr_fmt(fmt)	"nand-bbt: " fmt
33  * nanddev_read_bbt() - Read the BBT (Bad Block Table)
35  * @block: bbt block address
36  * @update: true - get version and overwrite bbt.cache with new version;
37  *	false - get bbt version only;
39  * Initialize the in-memory BBT.
48 					   BITS_PER_LONG) * sizeof(*nand->bbt.cache);  in nanddev_read_bbt()
57 	if (!nand->bbt.cache)  in nanddev_read_bbt()
101 	if (update && version > nand->bbt.version) {  in nanddev_read_bbt()
102 		memcpy(nand->bbt.cache, data_buf, nbytes);  in nanddev_read_bbt()
103 		nand->bbt.version = version;  in nanddev_read_bbt()
118 					   BITS_PER_LONG) * sizeof(*nand->bbt.cache);  in nanddev_write_bbt()
127 	BBT_DBG("write_bbt to blk=%d ver=%d\n", block, nand->bbt.version);  in nanddev_write_bbt()
128 	if (!nand->bbt.cache)  in nanddev_write_bbt()
151 	memcpy(data_buf, nand->bbt.cache, nbytes);  in nanddev_write_bbt()
153 	bbt_info->version = nand->bbt.version;  in nanddev_write_bbt()
209 	nand->bbt.version = 0;  in nanddev_scan_bbt()
214 	nand->bbt.option |= NANDDEV_BBT_SCANNED;  in nanddev_scan_bbt()
216 	if (nand->bbt.version == 0) {  in nanddev_scan_bbt()
220 			nand->bbt.option = 0;  in nanddev_scan_bbt()
231  * nanddev_bbt_init() - Initialize the BBT (Bad Block Table)
234  * Initialize the in-memory BBT.
245 	nand->bbt.cache = kcalloc(nwords, sizeof(*nand->bbt.cache),  in nanddev_bbt_init()
247 	if (!nand->bbt.cache)  in nanddev_bbt_init()
255  * nanddev_bbt_cleanup() - Cleanup the BBT (Bad Block Table)
262 	kfree(nand->bbt.cache);  in nanddev_bbt_cleanup()
267  * nanddev_bbt_update() - Update a BBT
270  * Update the BBT. Currently a NOP function since on-flash bbt is not yet
278 	if (nand->bbt.cache &&  in nanddev_bbt_update()
279 	    nand->bbt.option & NANDDEV_BBT_USE_FLASH) {  in nanddev_bbt_update()
313 			nand->bbt.version++;  in nanddev_bbt_update()
340  * @entry: the BBT entry
343  *	   is bigger than the BBT size.
349 	unsigned long *pos = nand->bbt.cache +  in nanddev_bbt_get_block_status()
355 	if (nand->bbt.option & NANDDEV_BBT_USE_FLASH &&  in nanddev_bbt_get_block_status()
356 	    !(nand->bbt.option & NANDDEV_BBT_SCANNED))  in nanddev_bbt_get_block_status()
373  *				    in-memory BBT
375  * @entry: the BBT entry to update
378  * Update an entry of the in-memory BBT. If you want to push the updated BBT
381  * Return: 0 in case of success or -%ERANGE if @entry is bigger than the BBT
388 	unsigned long *pos = nand->bbt.cache +  in nanddev_bbt_set_block_status()