27 static int mtdpstore_block_isbad(struct mtdpstore_context *cxt, loff_t off)  in mtdpstore_block_isbad()  argument
33 	off = ALIGN_DOWN(off, mtd->erasesize);  in mtdpstore_block_isbad()
34 	blknum = div_u64(off, mtd->erasesize);  in mtdpstore_block_isbad()
38 	ret = mtd_block_isbad(mtd, off);  in mtdpstore_block_isbad()
50 		loff_t off)  in mtdpstore_panic_block_isbad()  argument
55 	off = ALIGN_DOWN(off, mtd->erasesize);  in mtdpstore_panic_block_isbad()
56 	blknum = div_u64(off, mtd->erasesize);  in mtdpstore_panic_block_isbad()
61 		loff_t off)  in mtdpstore_mark_used()  argument
64 	u64 zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_mark_used()
71 		loff_t off)  in mtdpstore_mark_unused()  argument
74 	u64 zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_mark_unused()
81 		loff_t off)  in mtdpstore_block_mark_unused()  argument
87 	off = ALIGN_DOWN(off, mtd->erasesize);  in mtdpstore_block_mark_unused()
88 	zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_block_mark_unused()
97 static inline int mtdpstore_is_used(struct mtdpstore_context *cxt, loff_t off)  in mtdpstore_is_used()  argument
99 	u64 zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_is_used()
100 	u64 blknum = div_u64(off, cxt->mtd->erasesize);  in mtdpstore_is_used()
108 		loff_t off)  in mtdpstore_block_is_used()  argument
114 	off = ALIGN_DOWN(off, mtd->erasesize);  in mtdpstore_block_is_used()
115 	zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_block_is_used()
140 static void mtdpstore_mark_removed(struct mtdpstore_context *cxt, loff_t off)  in mtdpstore_mark_removed()  argument
143 	u64 zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_mark_removed()
150 		loff_t off)  in mtdpstore_block_clear_removed()  argument
156 	off = ALIGN_DOWN(off, mtd->erasesize);  in mtdpstore_block_clear_removed()
157 	zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_block_clear_removed()
166 		loff_t off)  in mtdpstore_block_is_removed()  argument
172 	off = ALIGN_DOWN(off, mtd->erasesize);  in mtdpstore_block_is_removed()
173 	zonenum = div_u64(off, cxt->info.kmsg_size);  in mtdpstore_block_is_removed()
183 static int mtdpstore_erase_do(struct mtdpstore_context *cxt, loff_t off)  in mtdpstore_erase_do()  argument
189 	off = ALIGN_DOWN(off, cxt->mtd->erasesize);  in mtdpstore_erase_do()
190 	dev_dbg(&mtd->dev, "try to erase off 0x%llx\n", off);  in mtdpstore_erase_do()
192 	erase.addr = off;  in mtdpstore_erase_do()
195 		mtdpstore_block_clear_removed(cxt, off);  in mtdpstore_erase_do()
210 static ssize_t mtdpstore_erase(size_t size, loff_t off)  in mtdpstore_erase()  argument
214 	if (mtdpstore_block_isbad(cxt, off))  in mtdpstore_erase()
217 	mtdpstore_mark_unused(cxt, off);  in mtdpstore_erase()
220 	if (likely(mtdpstore_block_is_used(cxt, off))) {  in mtdpstore_erase()
221 		mtdpstore_mark_removed(cxt, off);  in mtdpstore_erase()
226 	return mtdpstore_erase_do(cxt, off);  in mtdpstore_erase()
237 static int mtdpstore_security(struct mtdpstore_context *cxt, loff_t off)  in mtdpstore_security()  argument
241 	u32 zonenum = (u32)div_u64(off, cxt->info.kmsg_size);  in mtdpstore_security()
256 		div64_u64_rem(off + erasesize, cxt->mtd->size, (u64 *)&off);  in mtdpstore_security()
258 		if (mtdpstore_block_isbad(cxt, off))  in mtdpstore_security()
261 		ret = mtdpstore_erase_do(cxt, off);  in mtdpstore_security()
263 			mtdpstore_block_mark_unused(cxt, off);  in mtdpstore_security()
274 static ssize_t mtdpstore_write(const char *buf, size_t size, loff_t off)  in mtdpstore_write()  argument
281 	if (mtdpstore_block_isbad(cxt, off))  in mtdpstore_write()
285 	if (mtdpstore_is_used(cxt, off))  in mtdpstore_write()
288 	dev_dbg(&mtd->dev, "try to write off 0x%llx size %zu\n", off, size);  in mtdpstore_write()
289 	ret = mtd_write(cxt->mtd, off, size, &retlen, (u_char *)buf);  in mtdpstore_write()
292 				off, retlen, size, ret);  in mtdpstore_write()
295 	mtdpstore_mark_used(cxt, off);  in mtdpstore_write()
297 	mtdpstore_security(cxt, off);  in mtdpstore_write()
310 static ssize_t mtdpstore_read(char *buf, size_t size, loff_t off)  in mtdpstore_read()  argument
317 	if (mtdpstore_block_isbad(cxt, off))  in mtdpstore_read()
320 	dev_dbg(&mtd->dev, "try to read off 0x%llx size %zu\n", off, size);  in mtdpstore_read()
324 		ret = mtd_read(cxt->mtd, off + done, size - done, &retlen,  in mtdpstore_read()
328 					off + done, retlen, size - done, ret);  in mtdpstore_read()
341 					off + done, retlen, size - done, ret);  in mtdpstore_read()
348 		mtdpstore_mark_unused(cxt, off);  in mtdpstore_read()
350 		mtdpstore_mark_used(cxt, off);  in mtdpstore_read()
352 	mtdpstore_security(cxt, off);  in mtdpstore_read()
356 static ssize_t mtdpstore_panic_write(const char *buf, size_t size, loff_t off)  in mtdpstore_panic_write()  argument
363 	if (mtdpstore_panic_block_isbad(cxt, off))  in mtdpstore_panic_write()
367 	if (mtdpstore_is_used(cxt, off))  in mtdpstore_panic_write()
370 	ret = mtd_panic_write(cxt->mtd, off, size, &retlen, (u_char *)buf);  in mtdpstore_panic_write()
373 				off, retlen, size, ret);  in mtdpstore_panic_write()
376 	mtdpstore_mark_used(cxt, off);  in mtdpstore_panic_write()
445 		loff_t off, size_t size)  in mtdpstore_flush_removed_do()  argument
458 	ret = mtd_read(mtd, off, mtd->erasesize, &retlen, buf);  in mtdpstore_flush_removed_do()
464 	erase.addr = off;  in mtdpstore_flush_removed_do()
474 		if (mtdpstore_is_used(cxt, off)) {  in mtdpstore_flush_removed_do()
475 			ret = mtd_write(mtd, off, zonesize, &retlen, buf);  in mtdpstore_flush_removed_do()
478 						off, retlen, zonesize, ret);  in mtdpstore_flush_removed_do()
481 		off += zonesize;  in mtdpstore_flush_removed_do()
501 	loff_t off;  in mtdpstore_flush_removed()  local
504 	for (off = 0; blkcnt > 0; blkcnt--, off += mtd->erasesize) {  in mtdpstore_flush_removed()
505 		ret = mtdpstore_block_isbad(cxt, off);  in mtdpstore_flush_removed()
509 		ret = mtdpstore_block_is_removed(cxt, off);  in mtdpstore_flush_removed()
513 		ret = mtdpstore_flush_removed_do(cxt, off, mtd->erasesize);  in mtdpstore_flush_removed()