--- /dev/null
+/*
+ * rfd_ftl.c -- resident flash disk (flash translation layer)
+ *
+ * Copyright (C) 2005 Sean Young <sean@mess.org>
+ *
+ * $Id: rfd_ftl.c,v 1.4 2005/07/31 22:49:14 sean Exp $
+ *
+ * This type of flash translation layer (FTL) is used by the Embedded BIOS
+ * by General Software. It is known as the Resident Flash Disk (RFD), see:
+ *
+ * http://www.gensw.com/pages/prod/bios/rfd.htm
+ *
+ * based on ftl.c
+ */
+
+#include <linux/hdreg.h>
+#include <linux/init.h>
+#include <linux/mtd/blktrans.h>
+#include <linux/mtd/mtd.h>
+#include <linux/vmalloc.h>
+
+#include <asm/types.h>
+
+#define const_cpu_to_le16 __constant_cpu_to_le16
+
+static int block_size = 0;
+module_param(block_size, int, 0);
+MODULE_PARM_DESC(block_size, "Block size to use by RFD, defaults to erase unit size");
+
+#define PREFIX "rfd_ftl: "
+
+/* Major device # for FTL device */
+
+/* A request for this major has been sent to device@lanana.org */
+#ifndef RFD_FTL_MAJOR
+#define RFD_FTL_MAJOR 95
+#endif
+
+/* Maximum number of partitions in an FTL region */
+#define PART_BITS 4
+
+/* An erase unit should start with this value */
+#define RFD_MAGIC 0x9193
+
+/* the second value is 0xffff or 0xffc8; function unknown */
+
+/* the third value is always 0xffff, ignored */
+
+/* next is an array of mapping for each corresponding sector */
+#define HEADER_MAP_OFFSET 3
+#define SECTOR_DELETED 0x0000
+#define SECTOR_ZERO 0xfffe
+#define SECTOR_FREE 0xffff
+
+#define SECTOR_SIZE 512
+
+#define SECTORS_PER_TRACK 63
+
+struct block {
+ enum {
+ BLOCK_OK,
+ BLOCK_ERASING,
+ BLOCK_ERASED,
+ BLOCK_FAILED
+ } state;
+ int free_sectors;
+ int used_sectors;
+ int erases;
+ u_long offset;
+};
+
+struct partition {
+ struct mtd_blktrans_dev mbd;
+
+ u_int block_size; /* size of erase unit */
+ u_int total_blocks; /* number of erase units */
+ u_int header_sectors_per_block; /* header sectors in erase unit */
+ u_int data_sectors_per_block; /* data sectors in erase unit */
+ u_int sector_count; /* sectors in translated disk */
+ u_int header_size; /* bytes in header sector */
+ int reserved_block; /* block next up for reclaim */
+ int current_block; /* block to write to */
+ u16 *header_cache; /* cached header */
+
+ int is_reclaiming;
+ int cylinders;
+ int errors;
+ u_long *sector_map;
+ struct block *blocks;
+};
+
+static int rfd_ftl_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf);
+
+static int build_block_map(struct partition *part, int block_no)
+{
+ struct block *block = &part->blocks[block_no];
+ int i;
+
+ block->offset = part->block_size * block_no;
+
+ if (le16_to_cpu(part->header_cache[0]) != RFD_MAGIC) {
+ block->state = BLOCK_ERASED; /* assumption */
+ block->free_sectors = part->data_sectors_per_block;
+ part->reserved_block = block_no;
+ return 1;
+ }
+
+ block->state = BLOCK_OK;
+
+ for (i=0; i<part->data_sectors_per_block; i++) {
+ u16 entry;
+
+ entry = le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i]);
+
+ if (entry == SECTOR_DELETED)
+ continue;
+
+ if (entry == SECTOR_FREE) {
+ block->free_sectors++;
+ continue;
+ }
+
+ if (entry == SECTOR_ZERO)
+ entry = 0;
+
+ if (entry >= part->sector_count) {
+ printk(KERN_NOTICE PREFIX
+ "'%s': unit #%d: entry %d corrupt, "
+ "sector %d out of range\n",
+ part->mbd.mtd->name, block_no, i, entry);
+ continue;
+ }
+
+ if (part->sector_map[entry] != -1) {
+ printk(KERN_NOTICE PREFIX
+ "'%s': more than one entry for sector %d\n",
+ part->mbd.mtd->name, entry);
+ part->errors = 1;
+ continue;
+ }
+
+ part->sector_map[entry] = block->offset +
+ (i + part->header_sectors_per_block) * SECTOR_SIZE;
+
+ block->used_sectors++;
+ }
+
+ if (block->free_sectors == part->data_sectors_per_block)
+ part->reserved_block = block_no;
+
+ return 0;
+}
+
+static int scan_header(struct partition *part)
+{
+ int sectors_per_block;
+ int i, rc = -ENOMEM;
+ int blocks_found;
+ size_t retlen;
+
+ sectors_per_block = part->block_size / SECTOR_SIZE;
+ part->total_blocks = part->mbd.mtd->size / part->block_size;
+
+ if (part->total_blocks < 2)
+ return -ENOENT;
+
+ /* each erase block has three bytes header, followed by the map */
+ part->header_sectors_per_block =
+ ((HEADER_MAP_OFFSET + sectors_per_block) *
+ sizeof(u16) + SECTOR_SIZE - 1) / SECTOR_SIZE;
+
+ part->data_sectors_per_block = sectors_per_block -
+ part->header_sectors_per_block;
+
+ part->header_size = (HEADER_MAP_OFFSET +
+ part->data_sectors_per_block) * sizeof(u16);
+
+ part->cylinders = (part->data_sectors_per_block *
+ (part->total_blocks - 1) - 1) / SECTORS_PER_TRACK;
+
+ part->sector_count = part->cylinders * SECTORS_PER_TRACK;
+
+ part->current_block = -1;
+ part->reserved_block = -1;
+ part->is_reclaiming = 0;
+
+ part->header_cache = kmalloc(part->header_size, GFP_KERNEL);
+ if (!part->header_cache)
+ goto err;
+
+ part->blocks = kcalloc(part->total_blocks, sizeof(struct block),
+ GFP_KERNEL);
+ if (!part->blocks)
+ goto err;
+
+ part->sector_map = vmalloc(part->sector_count * sizeof(u_long));
+ if (!part->sector_map) {
+ printk(KERN_ERR PREFIX "'%s': unable to allocate memory for "
+ "sector map", part->mbd.mtd->name);
+ goto err;
+ }
+
+ for (i=0; i<part->sector_count; i++)
+ part->sector_map[i] = -1;
+
+ for (i=0, blocks_found=0; i<part->total_blocks; i++) {
+ rc = part->mbd.mtd->read(part->mbd.mtd,
+ i * part->block_size, part->header_size,
+ &retlen, (u_char*)part->header_cache);
+
+ if (!rc && retlen != part->header_size)
+ rc = -EIO;
+
+ if (rc)
+ goto err;
+
+ if (!build_block_map(part, i))
+ blocks_found++;
+ }
+
+ if (blocks_found == 0) {
+ printk(KERN_NOTICE PREFIX "no RFD magic found in '%s'\n",
+ part->mbd.mtd->name);
+ rc = -ENOENT;
+ goto err;
+ }
+
+ if (part->reserved_block == -1) {
+ printk(KERN_NOTICE PREFIX "'%s': no empty erase unit found\n",
+ part->mbd.mtd->name);
+
+ part->errors = 1;
+ }
+
+ return 0;
+
+err:
+ vfree(part->sector_map);
+ kfree(part->header_cache);
+ kfree(part->blocks);
+
+ return rc;
+}
+
+static int rfd_ftl_readsect(struct mtd_blktrans_dev *dev, u_long sector, char *buf)
+{
+ struct partition *part = (struct partition*)dev;
+ u_long addr;
+ size_t retlen;
+ int rc;
+
+ if (sector >= part->sector_count)
+ return -EIO;
+
+ addr = part->sector_map[sector];
+ if (addr != -1) {
+ rc = part->mbd.mtd->read(part->mbd.mtd, addr, SECTOR_SIZE,
+ &retlen, (u_char*)buf);
+ if (!rc && retlen != SECTOR_SIZE)
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_WARNING PREFIX "error reading '%s' at "
+ "0x%lx\n", part->mbd.mtd->name, addr);
+ return rc;
+ }
+ } else
+ memset(buf, 0, SECTOR_SIZE);
+
+ return 0;
+}
+
+static void erase_callback(struct erase_info *erase)
+{
+ struct partition *part;
+ u16 magic;
+ int i, rc;
+ size_t retlen;
+
+ part = (struct partition*)erase->priv;
+
+ i = erase->addr / part->block_size;
+ if (i >= part->total_blocks || part->blocks[i].offset != erase->addr) {
+ printk(KERN_ERR PREFIX "erase callback for unknown offset %x "
+ "on '%s'\n", erase->addr, part->mbd.mtd->name);
+ return;
+ }
+
+ if (erase->state != MTD_ERASE_DONE) {
+ printk(KERN_WARNING PREFIX "erase failed at 0x%x on '%s', "
+ "state %d\n", erase->addr,
+ part->mbd.mtd->name, erase->state);
+
+ part->blocks[i].state = BLOCK_FAILED;
+ part->blocks[i].free_sectors = 0;
+ part->blocks[i].used_sectors = 0;
+
+ kfree(erase);
+
+ return;
+ }
+
+ magic = const_cpu_to_le16(RFD_MAGIC);
+
+ part->blocks[i].state = BLOCK_ERASED;
+ part->blocks[i].free_sectors = part->data_sectors_per_block;
+ part->blocks[i].used_sectors = 0;
+ part->blocks[i].erases++;
+
+ rc = part->mbd.mtd->write(part->mbd.mtd,
+ part->blocks[i].offset, sizeof(magic), &retlen,
+ (u_char*)&magic);
+
+ if (!rc && retlen != sizeof(magic))
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_NOTICE PREFIX "'%s': unable to write RFD "
+ "header at 0x%lx\n",
+ part->mbd.mtd->name,
+ part->blocks[i].offset);
+ part->blocks[i].state = BLOCK_FAILED;
+ }
+ else
+ part->blocks[i].state = BLOCK_OK;
+
+ kfree(erase);
+}
+
+static int erase_block(struct partition *part, int block)
+{
+ struct erase_info *erase;
+ int rc = -ENOMEM;
+
+ erase = kmalloc(sizeof(struct erase_info), GFP_KERNEL);
+ if (!erase)
+ goto err;
+
+ erase->mtd = part->mbd.mtd;
+ erase->callback = erase_callback;
+ erase->addr = part->blocks[block].offset;
+ erase->len = part->block_size;
+ erase->priv = (u_long)part;
+
+ part->blocks[block].state = BLOCK_ERASING;
+ part->blocks[block].free_sectors = 0;
+
+ rc = part->mbd.mtd->erase(part->mbd.mtd, erase);
+
+ if (rc) {
+ printk(KERN_WARNING PREFIX "erase of region %x,%x on '%s' "
+ "failed\n", erase->addr, erase->len,
+ part->mbd.mtd->name);
+ kfree(erase);
+ }
+
+err:
+ return rc;
+}
+
+static int move_block_contents(struct partition *part, int block_no, u_long *old_sector)
+{
+ void *sector_data;
+ u16 *map;
+ size_t retlen;
+ int i, rc = -ENOMEM;
+
+ part->is_reclaiming = 1;
+
+ sector_data = kmalloc(SECTOR_SIZE, GFP_KERNEL);
+ if (!sector_data)
+ goto err3;
+
+ map = kmalloc(part->header_size, GFP_KERNEL);
+ if (!map)
+ goto err2;
+
+ rc = part->mbd.mtd->read(part->mbd.mtd,
+ part->blocks[block_no].offset, part->header_size,
+ &retlen, (u_char*)map);
+
+ if (!rc && retlen != part->header_size)
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_NOTICE PREFIX "error reading '%s' at "
+ "0x%lx\n", part->mbd.mtd->name,
+ part->blocks[block_no].offset);
+
+ goto err;
+ }
+
+ for (i=0; i<part->data_sectors_per_block; i++) {
+ u16 entry = le16_to_cpu(map[HEADER_MAP_OFFSET + i]);
+ u_long addr;
+
+
+ if (entry == SECTOR_FREE || entry == SECTOR_DELETED)
+ continue;
+
+ if (entry == SECTOR_ZERO)
+ entry = 0;
+
+ /* already warned about and ignored in build_block_map() */
+ if (entry >= part->sector_count)
+ continue;
+
+ addr = part->blocks[block_no].offset +
+ (i + part->header_sectors_per_block) * SECTOR_SIZE;
+
+ if (*old_sector == addr) {
+ *old_sector = -1;
+ if (!part->blocks[block_no].used_sectors--) {
+ rc = erase_block(part, block_no);
+ break;
+ }
+ continue;
+ }
+ rc = part->mbd.mtd->read(part->mbd.mtd, addr,
+ SECTOR_SIZE, &retlen, sector_data);
+
+ if (!rc && retlen != SECTOR_SIZE)
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_NOTICE PREFIX "'%s': Unable to "
+ "read sector for relocation\n",
+ part->mbd.mtd->name);
+
+ goto err;
+ }
+
+ rc = rfd_ftl_writesect((struct mtd_blktrans_dev*)part,
+ entry, sector_data);
+
+ if (rc)
+ goto err;
+ }
+
+err:
+ kfree(map);
+err2:
+ kfree(sector_data);
+err3:
+ part->is_reclaiming = 0;
+
+ return rc;
+}
+
+static int reclaim_block(struct partition *part, u_long *old_sector)
+{
+ int block, best_block, score, old_sector_block;
+ int rc;
+
+ /* we have a race if sync doesn't exist */
+ if (part->mbd.mtd->sync)
+ part->mbd.mtd->sync(part->mbd.mtd);
+
+ score = 0x7fffffff; /* MAX_INT */
+ best_block = -1;
+ if (*old_sector != -1)
+ old_sector_block = *old_sector / part->block_size;
+ else
+ old_sector_block = -1;
+
+ for (block=0; block<part->total_blocks; block++) {
+ int this_score;
+
+ if (block == part->reserved_block)
+ continue;
+
+ /*
+ * Postpone reclaiming if there is a free sector as
+ * more removed sectors is more efficient (have to move
+ * less).
+ */
+ if (part->blocks[block].free_sectors)
+ return 0;
+
+ this_score = part->blocks[block].used_sectors;
+
+ if (block == old_sector_block)
+ this_score--;
+ else {
+ /* no point in moving a full block */
+ if (part->blocks[block].used_sectors ==
+ part->data_sectors_per_block)
+ continue;
+ }
+
+ this_score += part->blocks[block].erases;
+
+ if (this_score < score) {
+ best_block = block;
+ score = this_score;
+ }
+ }
+
+ if (best_block == -1)
+ return -ENOSPC;
+
+ part->current_block = -1;
+ part->reserved_block = best_block;
+
+ pr_debug("reclaim_block: reclaiming block #%d with %d used "
+ "%d free sectors\n", best_block,
+ part->blocks[best_block].used_sectors,
+ part->blocks[best_block].free_sectors);
+
+ if (part->blocks[best_block].used_sectors)
+ rc = move_block_contents(part, best_block, old_sector);
+ else
+ rc = erase_block(part, best_block);
+
+ return rc;
+}
+
+/*
+ * IMPROVE: It would be best to choose the block with the most deleted sectors,
+ * because if we fill that one up first it'll have the most chance of having
+ * the least live sectors at reclaim.
+ */
+static int find_free_block(const struct partition *part)
+{
+ int block, stop;
+
+ block = part->current_block == -1 ?
+ jiffies % part->total_blocks : part->current_block;
+ stop = block;
+
+ do {
+ if (part->blocks[block].free_sectors &&
+ block != part->reserved_block)
+ return block;
+
+ if (++block >= part->total_blocks)
+ block = 0;
+
+ } while (block != stop);
+
+ return -1;
+}
+
+static int find_writeable_block(struct partition *part, u_long *old_sector)
+{
+ int rc, block;
+ size_t retlen;
+
+ block = find_free_block(part);
+
+ if (block == -1) {
+ if (!part->is_reclaiming) {
+ rc = reclaim_block(part, old_sector);
+ if (rc)
+ goto err;
+
+ block = find_free_block(part);
+ }
+
+ if (block == -1) {
+ rc = -ENOSPC;
+ goto err;
+ }
+ }
+
+ rc = part->mbd.mtd->read(part->mbd.mtd, part->blocks[block].offset,
+ part->header_size, &retlen, (u_char*)part->header_cache);
+
+ if (!rc && retlen != part->header_size)
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_NOTICE PREFIX "'%s': unable to read header at "
+ "0x%lx\n", part->mbd.mtd->name,
+ part->blocks[block].offset);
+ goto err;
+ }
+
+ part->current_block = block;
+
+err:
+ return rc;
+}
+
+static int mark_sector_deleted(struct partition *part, u_long old_addr)
+{
+ int block, offset, rc;
+ u_long addr;
+ size_t retlen;
+ u16 del = const_cpu_to_le16(SECTOR_DELETED);
+
+ block = old_addr / part->block_size;
+ offset = (old_addr % part->block_size) / SECTOR_SIZE -
+ part->header_sectors_per_block;
+
+ addr = part->blocks[block].offset +
+ (HEADER_MAP_OFFSET + offset) * sizeof(u16);
+ rc = part->mbd.mtd->write(part->mbd.mtd, addr,
+ sizeof(del), &retlen, (u_char*)&del);
+
+ if (!rc && retlen != sizeof(del))
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_WARNING PREFIX "error writing '%s' at "
+ "0x%lx\n", part->mbd.mtd->name, addr);
+ if (rc)
+ goto err;
+ }
+ if (block == part->current_block)
+ part->header_cache[offset + HEADER_MAP_OFFSET] = del;
+
+ part->blocks[block].used_sectors--;
+
+ if (!part->blocks[block].used_sectors &&
+ !part->blocks[block].free_sectors)
+ rc = erase_block(part, block);
+
+err:
+ return rc;
+}
+
+static int find_free_sector(const struct partition *part, const struct block *block)
+{
+ int i, stop;
+
+ i = stop = part->data_sectors_per_block - block->free_sectors;
+
+ do {
+ if (le16_to_cpu(part->header_cache[HEADER_MAP_OFFSET + i])
+ == SECTOR_FREE)
+ return i;
+
+ if (++i == part->data_sectors_per_block)
+ i = 0;
+ }
+ while(i != stop);
+
+ return -1;
+}
+
+static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf, ulong *old_addr)
+{
+ struct partition *part = (struct partition*)dev;
+ struct block *block;
+ u_long addr;
+ int i;
+ int rc;
+ size_t retlen;
+ u16 entry;
+
+ if (part->current_block == -1 ||
+ !part->blocks[part->current_block].free_sectors) {
+
+ rc = find_writeable_block(part, old_addr);
+ if (rc)
+ goto err;
+ }
+
+ block = &part->blocks[part->current_block];
+
+ i = find_free_sector(part, block);
+
+ if (i < 0) {
+ rc = -ENOSPC;
+ goto err;
+ }
+
+ addr = (i + part->header_sectors_per_block) * SECTOR_SIZE +
+ block->offset;
+ rc = part->mbd.mtd->write(part->mbd.mtd,
+ addr, SECTOR_SIZE, &retlen, (u_char*)buf);
+
+ if (!rc && retlen != SECTOR_SIZE)
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n",
+ part->mbd.mtd->name, addr);
+ if (rc)
+ goto err;
+ }
+
+ part->sector_map[sector] = addr;
+
+ entry = cpu_to_le16(sector == 0 ? SECTOR_ZERO : sector);
+
+ part->header_cache[i + HEADER_MAP_OFFSET] = entry;
+
+ addr = block->offset + (HEADER_MAP_OFFSET + i) * sizeof(u16);
+ rc = part->mbd.mtd->write(part->mbd.mtd, addr,
+ sizeof(entry), &retlen, (u_char*)&entry);
+
+ if (!rc && retlen != sizeof(entry))
+ rc = -EIO;
+
+ if (rc) {
+ printk(KERN_WARNING PREFIX "error writing '%s' at 0x%lx\n",
+ part->mbd.mtd->name, addr);
+ if (rc)
+ goto err;
+ }
+ block->used_sectors++;
+ block->free_sectors--;
+
+err:
+ return rc;
+}
+
+static int rfd_ftl_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf)
+{
+ struct partition *part = (struct partition*)dev;
+ u_long old_addr;
+ int i;
+ int rc = 0;
+
+ pr_debug("rfd_ftl_writesect(sector=0x%lx)\n", sector);
+
+ if (part->reserved_block == -1) {
+ rc = -EACCES;
+ goto err;
+ }
+
+ if (sector >= part->sector_count) {
+ rc = -EIO;
+ goto err;
+ }
+
+ old_addr = part->sector_map[sector];
+
+ for (i=0; i<SECTOR_SIZE; i++) {
+ if (!buf[i])
+ continue;
+
+ rc = do_writesect(dev, sector, buf, &old_addr);
+ if (rc)
+ goto err;
+ break;
+ }
+
+ if (i == SECTOR_SIZE)
+ part->sector_map[sector] = -1;
+
+ if (old_addr != -1)
+ rc = mark_sector_deleted(part, old_addr);
+
+err:
+ return rc;
+}
+
+static int rfd_ftl_getgeo(struct mtd_blktrans_dev *dev, struct hd_geometry *geo)
+{
+ struct partition *part = (struct partition*)dev;
+
+ geo->heads = 1;
+ geo->sectors = SECTORS_PER_TRACK;
+ geo->cylinders = part->cylinders;
+
+ return 0;
+}
+
+static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
+{
+ struct partition *part;
+
+ if (mtd->type != MTD_NORFLASH)
+ return;
+
+ part = kcalloc(1, sizeof(struct partition), GFP_KERNEL);
+ if (!part)
+ return;
+
+ part->mbd.mtd = mtd;
+
+ if (block_size)
+ part->block_size = block_size;
+ else {
+ if (!mtd->erasesize) {
+ printk(KERN_NOTICE PREFIX "please provide block_size");
+ return;
+ }
+ else
+ part->block_size = mtd->erasesize;
+ }
+
+ if (scan_header(part) == 0) {
+ part->mbd.size = part->sector_count;
+ part->mbd.blksize = SECTOR_SIZE;
+ part->mbd.tr = tr;
+ part->mbd.devnum = -1;
+ if (!(mtd->flags & MTD_WRITEABLE))
+ part->mbd.readonly = 1;
+ else if (part->errors) {
+ printk(KERN_NOTICE PREFIX "'%s': errors found, "
+ "setting read-only", mtd->name);
+ part->mbd.readonly = 1;
+ }
+
+ printk(KERN_INFO PREFIX "name: '%s' type: %d flags %x\n",
+ mtd->name, mtd->type, mtd->flags);
+
+ if (!add_mtd_blktrans_dev((void*)part))
+ return;
+ }
+
+ kfree(part);
+}
+
+static void rfd_ftl_remove_dev(struct mtd_blktrans_dev *dev)
+{
+ struct partition *part = (struct partition*)dev;
+ int i;
+
+ for (i=0; i<part->total_blocks; i++) {
+ pr_debug("rfd_ftl_remove_dev:'%s': erase unit #%02d: %d erases\n",
+ part->mbd.mtd->name, i, part->blocks[i].erases);
+ }
+
+ del_mtd_blktrans_dev(dev);
+ vfree(part->sector_map);
+ kfree(part->header_cache);
+ kfree(part->blocks);
+ kfree(part);
+}
+
+struct mtd_blktrans_ops rfd_ftl_tr = {
+ .name = "rfd",
+ .major = RFD_FTL_MAJOR,
+ .part_bits = PART_BITS,
+ .readsect = rfd_ftl_readsect,
+ .writesect = rfd_ftl_writesect,
+ .getgeo = rfd_ftl_getgeo,
+ .add_mtd = rfd_ftl_add_mtd,
+ .remove_dev = rfd_ftl_remove_dev,
+ .owner = THIS_MODULE,
+};
+
+static int __init init_rfd_ftl(void)
+{
+ return register_mtd_blktrans(&rfd_ftl_tr);
+}
+
+static void __exit cleanup_rfd_ftl(void)
+{
+ deregister_mtd_blktrans(&rfd_ftl_tr);
+}
+
+module_init(init_rfd_ftl);
+module_exit(cleanup_rfd_ftl);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sean Young <sean@mess.org>");
+MODULE_DESCRIPTION("Support code for RFD Flash Translation Layer, "
+ "used by General Software's Embedded BIOS");
+
projects / karo-tx-linux.git / commitdiff