Lines Matching +full:rc +full:- +full:map +full:- +full:name
2 * rfd_ftl.c -- resident flash disk (flash translation layer)
94 struct block *block = &part->blocks[block_no]; in build_block_map()
97 block->offset = part->block_size * block_no; in build_block_map()
99 if (le16_to_cpu(part->header_cache[0]) != RFD_MAGIC) { in build_block_map()
100 block->state = BLOCK_UNUSED; in build_block_map()
101 return -ENOENT; in build_block_map()
104 block->state = BLOCK_OK; in build_block_map()
106 for (i=0; i<part->data_sectors_per_block; i++) { in build_block_map()
109 entry = le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i]); in build_block_map()
115 block->free_sectors++; in build_block_map()
122 if (entry >= part->sector_count) { in build_block_map()
126 part->mbd.mtd->name, block_no, i, entry); in build_block_map()
130 if (part->sector_map[entry] != -1) { in build_block_map()
133 part->mbd.mtd->name, entry); in build_block_map()
134 part->errors = 1; in build_block_map()
138 part->sector_map[entry] = block->offset + in build_block_map()
139 (i + part->header_sectors_per_block) * SECTOR_SIZE; in build_block_map()
141 block->used_sectors++; in build_block_map()
144 if (block->free_sectors == part->data_sectors_per_block) in build_block_map()
145 part->reserved_block = block_no; in build_block_map()
153 int i, rc = -ENOMEM; in scan_header() local
157 sectors_per_block = part->block_size / SECTOR_SIZE; in scan_header()
158 part->total_blocks = (u32)part->mbd.mtd->size / part->block_size; in scan_header()
160 if (part->total_blocks < 2) in scan_header()
161 return -ENOENT; in scan_header()
163 /* each erase block has three bytes header, followed by the map */ in scan_header()
164 part->header_sectors_per_block = in scan_header()
166 sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE; in scan_header()
168 part->data_sectors_per_block = sectors_per_block - in scan_header()
169 part->header_sectors_per_block; in scan_header()
171 part->header_size = (HEADER_MAP_OFFSET + in scan_header()
172 part->data_sectors_per_block) * sizeof(u16); in scan_header()
174 part->cylinders = (part->data_sectors_per_block * in scan_header()
175 (part->total_blocks - 1) - 1) / SECTORS_PER_TRACK; in scan_header()
177 part->sector_count = part->cylinders * SECTORS_PER_TRACK; in scan_header()
179 part->current_block = -1; in scan_header()
180 part->reserved_block = -1; in scan_header()
181 part->is_reclaiming = 0; in scan_header()
183 part->header_cache = kmalloc(part->header_size, GFP_KERNEL); in scan_header()
184 if (!part->header_cache) in scan_header()
187 part->blocks = kcalloc(part->total_blocks, sizeof(struct block), in scan_header()
189 if (!part->blocks) in scan_header()
192 part->sector_map = vmalloc(array_size(sizeof(u_long), in scan_header()
193 part->sector_count)); in scan_header()
194 if (!part->sector_map) { in scan_header()
196 "sector map", part->mbd.mtd->name); in scan_header()
200 for (i=0; i<part->sector_count; i++) in scan_header()
201 part->sector_map[i] = -1; in scan_header()
203 for (i=0, blocks_found=0; i<part->total_blocks; i++) { in scan_header()
204 rc = mtd_read(part->mbd.mtd, i * part->block_size, in scan_header()
205 part->header_size, &retlen, in scan_header()
206 (u_char *)part->header_cache); in scan_header()
208 if (!rc && retlen != part->header_size) in scan_header()
209 rc = -EIO; in scan_header()
211 if (rc) in scan_header()
220 part->mbd.mtd->name); in scan_header()
221 rc = -ENOENT; in scan_header()
225 if (part->reserved_block == -1) { in scan_header()
227 part->mbd.mtd->name); in scan_header()
229 part->errors = 1; in scan_header()
235 vfree(part->sector_map); in scan_header()
236 kfree(part->header_cache); in scan_header()
237 kfree(part->blocks); in scan_header()
239 return rc; in scan_header()
247 int rc; in rfd_ftl_readsect() local
249 if (sector >= part->sector_count) in rfd_ftl_readsect()
250 return -EIO; in rfd_ftl_readsect()
252 addr = part->sector_map[sector]; in rfd_ftl_readsect()
253 if (addr != -1) { in rfd_ftl_readsect()
254 rc = mtd_read(part->mbd.mtd, addr, SECTOR_SIZE, &retlen, in rfd_ftl_readsect()
256 if (!rc && retlen != SECTOR_SIZE) in rfd_ftl_readsect()
257 rc = -EIO; in rfd_ftl_readsect()
259 if (rc) { in rfd_ftl_readsect()
261 "0x%lx\n", part->mbd.mtd->name, addr); in rfd_ftl_readsect()
262 return rc; in rfd_ftl_readsect()
273 int rc; in erase_block() local
277 return -ENOMEM; in erase_block()
279 erase->addr = part->blocks[block].offset; in erase_block()
280 erase->len = part->block_size; in erase_block()
282 part->blocks[block].state = BLOCK_ERASING; in erase_block()
283 part->blocks[block].free_sectors = 0; in erase_block()
285 rc = mtd_erase(part->mbd.mtd, erase); in erase_block()
286 if (rc) { in erase_block()
288 "failed\n", (unsigned long long)erase->addr, in erase_block()
289 (unsigned long long)erase->len, part->mbd.mtd->name); in erase_block()
290 part->blocks[block].state = BLOCK_FAILED; in erase_block()
291 part->blocks[block].free_sectors = 0; in erase_block()
292 part->blocks[block].used_sectors = 0; in erase_block()
297 part->blocks[block].state = BLOCK_ERASED; in erase_block()
298 part->blocks[block].free_sectors = part->data_sectors_per_block; in erase_block()
299 part->blocks[block].used_sectors = 0; in erase_block()
300 part->blocks[block].erases++; in erase_block()
302 rc = mtd_write(part->mbd.mtd, part->blocks[block].offset, in erase_block()
304 if (!rc && retlen != sizeof(magic)) in erase_block()
305 rc = -EIO; in erase_block()
307 if (rc) { in erase_block()
309 part->mbd.mtd->name, part->blocks[block].offset); in erase_block()
310 part->blocks[block].state = BLOCK_FAILED; in erase_block()
312 part->blocks[block].state = BLOCK_OK; in erase_block()
318 return rc; in erase_block()
324 u16 *map; in move_block_contents() local
326 int i, rc = -ENOMEM; in move_block_contents() local
328 part->is_reclaiming = 1; in move_block_contents()
334 map = kmalloc(part->header_size, GFP_KERNEL); in move_block_contents()
335 if (!map) in move_block_contents()
338 rc = mtd_read(part->mbd.mtd, part->blocks[block_no].offset, in move_block_contents()
339 part->header_size, &retlen, (u_char *)map); in move_block_contents()
341 if (!rc && retlen != part->header_size) in move_block_contents()
342 rc = -EIO; in move_block_contents()
344 if (rc) { in move_block_contents()
346 "0x%lx\n", part->mbd.mtd->name, in move_block_contents()
347 part->blocks[block_no].offset); in move_block_contents()
352 for (i=0; i<part->data_sectors_per_block; i++) { in move_block_contents()
353 u16 entry = le16_to_cpu(map[HEADER_MAP_OFFSET + i]); in move_block_contents()
364 if (entry >= part->sector_count) in move_block_contents()
367 addr = part->blocks[block_no].offset + in move_block_contents()
368 (i + part->header_sectors_per_block) * SECTOR_SIZE; in move_block_contents()
371 *old_sector = -1; in move_block_contents()
372 if (!part->blocks[block_no].used_sectors--) { in move_block_contents()
373 rc = erase_block(part, block_no); in move_block_contents()
378 rc = mtd_read(part->mbd.mtd, addr, SECTOR_SIZE, &retlen, in move_block_contents()
381 if (!rc && retlen != SECTOR_SIZE) in move_block_contents()
382 rc = -EIO; in move_block_contents()
384 if (rc) { in move_block_contents()
387 part->mbd.mtd->name); in move_block_contents()
392 rc = rfd_ftl_writesect((struct mtd_blktrans_dev*)part, in move_block_contents()
395 if (rc) in move_block_contents()
400 kfree(map); in move_block_contents()
404 part->is_reclaiming = 0; in move_block_contents()
406 return rc; in move_block_contents()
412 int rc; in reclaim_block() local
415 mtd_sync(part->mbd.mtd); in reclaim_block()
418 best_block = -1; in reclaim_block()
419 if (*old_sector != -1) in reclaim_block()
420 old_sector_block = *old_sector / part->block_size; in reclaim_block()
422 old_sector_block = -1; in reclaim_block()
424 for (block=0; block<part->total_blocks; block++) { in reclaim_block()
427 if (block == part->reserved_block) in reclaim_block()
435 if (part->blocks[block].free_sectors) in reclaim_block()
438 this_score = part->blocks[block].used_sectors; in reclaim_block()
441 this_score--; in reclaim_block()
444 if (part->blocks[block].used_sectors == in reclaim_block()
445 part->data_sectors_per_block) in reclaim_block()
449 this_score += part->blocks[block].erases; in reclaim_block()
457 if (best_block == -1) in reclaim_block()
458 return -ENOSPC; in reclaim_block()
460 part->current_block = -1; in reclaim_block()
461 part->reserved_block = best_block; in reclaim_block()
465 part->blocks[best_block].used_sectors, in reclaim_block()
466 part->blocks[best_block].free_sectors); in reclaim_block()
468 if (part->blocks[best_block].used_sectors) in reclaim_block()
469 rc = move_block_contents(part, best_block, old_sector); in reclaim_block()
471 rc = erase_block(part, best_block); in reclaim_block()
473 return rc; in reclaim_block()
485 block = part->current_block == -1 ? in find_free_block()
486 jiffies % part->total_blocks : part->current_block; in find_free_block()
490 if (part->blocks[block].free_sectors && in find_free_block()
491 block != part->reserved_block) in find_free_block()
494 if (part->blocks[block].state == BLOCK_UNUSED) in find_free_block()
497 if (++block >= part->total_blocks) in find_free_block()
502 return -1; in find_free_block()
507 int rc, block; in find_writable_block() local
512 if (block == -1) { in find_writable_block()
513 if (!part->is_reclaiming) { in find_writable_block()
514 rc = reclaim_block(part, old_sector); in find_writable_block()
515 if (rc) in find_writable_block()
521 if (block == -1) { in find_writable_block()
522 rc = -ENOSPC; in find_writable_block()
527 rc = mtd_read(part->mbd.mtd, part->blocks[block].offset, in find_writable_block()
528 part->header_size, &retlen, in find_writable_block()
529 (u_char *)part->header_cache); in find_writable_block()
531 if (!rc && retlen != part->header_size) in find_writable_block()
532 rc = -EIO; in find_writable_block()
534 if (rc) { in find_writable_block()
536 "0x%lx\n", part->mbd.mtd->name, in find_writable_block()
537 part->blocks[block].offset); in find_writable_block()
541 part->current_block = block; in find_writable_block()
544 return rc; in find_writable_block()
549 int block, offset, rc; in mark_sector_deleted() local
554 block = old_addr / part->block_size; in mark_sector_deleted()
555 offset = (old_addr % part->block_size) / SECTOR_SIZE - in mark_sector_deleted()
556 part->header_sectors_per_block; in mark_sector_deleted()
558 addr = part->blocks[block].offset + in mark_sector_deleted()
560 rc = mtd_write(part->mbd.mtd, addr, sizeof(del), &retlen, in mark_sector_deleted()
563 if (!rc && retlen != sizeof(del)) in mark_sector_deleted()
564 rc = -EIO; in mark_sector_deleted()
566 if (rc) { in mark_sector_deleted()
568 "0x%lx\n", part->mbd.mtd->name, addr); in mark_sector_deleted()
571 if (block == part->current_block) in mark_sector_deleted()
572 part->header_cache[offset + HEADER_MAP_OFFSET] = del; in mark_sector_deleted()
574 part->blocks[block].used_sectors--; in mark_sector_deleted()
576 if (!part->blocks[block].used_sectors && in mark_sector_deleted()
577 !part->blocks[block].free_sectors) in mark_sector_deleted()
578 rc = erase_block(part, block); in mark_sector_deleted()
581 return rc; in mark_sector_deleted()
588 i = stop = part->data_sectors_per_block - block->free_sectors; in find_free_sector()
591 if (le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i]) in find_free_sector()
595 if (++i == part->data_sectors_per_block) in find_free_sector()
600 return -1; in find_free_sector()
609 int rc; in do_writesect() local
613 if (part->current_block == -1 || in do_writesect()
614 !part->blocks[part->current_block].free_sectors) { in do_writesect()
616 rc = find_writable_block(part, old_addr); in do_writesect()
617 if (rc) in do_writesect()
621 block = &part->blocks[part->current_block]; in do_writesect()
626 rc = -ENOSPC; in do_writesect()
630 addr = (i + part->header_sectors_per_block) * SECTOR_SIZE + in do_writesect()
631 block->offset; in do_writesect()
632 rc = mtd_write(part->mbd.mtd, addr, SECTOR_SIZE, &retlen, in do_writesect()
635 if (!rc && retlen != SECTOR_SIZE) in do_writesect()
636 rc = -EIO; in do_writesect()
638 if (rc) { in do_writesect()
640 part->mbd.mtd->name, addr); in do_writesect()
644 part->sector_map[sector] = addr; in do_writesect()
648 part->header_cache[i + HEADER_MAP_OFFSET] = entry; in do_writesect()
650 addr = block->offset + (HEADER_MAP_OFFSET + i) * sizeof(u16); in do_writesect()
651 rc = mtd_write(part->mbd.mtd, addr, sizeof(entry), &retlen, in do_writesect()
654 if (!rc && retlen != sizeof(entry)) in do_writesect()
655 rc = -EIO; in do_writesect()
657 if (rc) { in do_writesect()
659 part->mbd.mtd->name, addr); in do_writesect()
662 block->used_sectors++; in do_writesect()
663 block->free_sectors--; in do_writesect()
666 return rc; in do_writesect()
674 int rc = 0; in rfd_ftl_writesect() local
678 if (part->reserved_block == -1) { in rfd_ftl_writesect()
679 rc = -EACCES; in rfd_ftl_writesect()
683 if (sector >= part->sector_count) { in rfd_ftl_writesect()
684 rc = -EIO; in rfd_ftl_writesect()
688 old_addr = part->sector_map[sector]; in rfd_ftl_writesect()
694 rc = do_writesect(dev, sector, buf, &old_addr); in rfd_ftl_writesect()
695 if (rc) in rfd_ftl_writesect()
701 part->sector_map[sector] = -1; in rfd_ftl_writesect()
703 if (old_addr != -1) in rfd_ftl_writesect()
704 rc = mark_sector_deleted(part, old_addr); in rfd_ftl_writesect()
707 return rc; in rfd_ftl_writesect()
714 geo->heads = 1; in rfd_ftl_getgeo()
715 geo->sectors = SECTORS_PER_TRACK; in rfd_ftl_getgeo()
716 geo->cylinders = part->cylinders; in rfd_ftl_getgeo()
725 if (mtd->type != MTD_NORFLASH || mtd->size > UINT_MAX) in rfd_ftl_add_mtd()
732 part->mbd.mtd = mtd; in rfd_ftl_add_mtd()
735 part->block_size = block_size; in rfd_ftl_add_mtd()
737 if (!mtd->erasesize) { in rfd_ftl_add_mtd()
741 part->block_size = mtd->erasesize; in rfd_ftl_add_mtd()
745 part->mbd.size = part->sector_count; in rfd_ftl_add_mtd()
746 part->mbd.tr = tr; in rfd_ftl_add_mtd()
747 part->mbd.devnum = -1; in rfd_ftl_add_mtd()
748 if (!(mtd->flags & MTD_WRITEABLE)) in rfd_ftl_add_mtd()
749 part->mbd.readonly = 1; in rfd_ftl_add_mtd()
750 else if (part->errors) { in rfd_ftl_add_mtd()
752 "setting read-only\n", mtd->name); in rfd_ftl_add_mtd()
753 part->mbd.readonly = 1; in rfd_ftl_add_mtd()
756 printk(KERN_INFO PREFIX "name: '%s' type: %d flags %x\n", in rfd_ftl_add_mtd()
757 mtd->name, mtd->type, mtd->flags); in rfd_ftl_add_mtd()
771 for (i=0; i<part->total_blocks; i++) { in rfd_ftl_remove_dev()
773 part->mbd.mtd->name, i, part->blocks[i].erases); in rfd_ftl_remove_dev()
777 vfree(part->sector_map); in rfd_ftl_remove_dev()
778 kfree(part->header_cache); in rfd_ftl_remove_dev()
779 kfree(part->blocks); in rfd_ftl_remove_dev()
783 .name = "rfd",