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authorNicolas Pitre <nico@cam.org>2005-08-06 05:51:33 +0100
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-11-06 20:13:52 +0100
commit59da721a2288b8aec751a2716f7ab60f2ea0c925 (patch)
tree902a0a61cd3ed7e2dab27f20b4fd541566f598a1 /fs
parente102d54abf6806b95c89142cd0b7e94d709ebcd7 (diff)
downloadlinux-linaro-59da721a2288b8aec751a2716f7ab60f2ea0c925.tar.gz
[JFFS2] Teach JFFS2 about Sibley flash
Intels Sibley flash needs JFFS2 write buffer functionality Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/jffs2/fs.c16
-rw-r--r--fs/jffs2/os-linux.h13
-rw-r--r--fs/jffs2/wbuf.c22
3 files changed, 46 insertions, 5 deletions
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index cc18b92234c..79b4bdc76f7 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: fs.c,v 1.61 2005/07/24 15:29:56 dedekind Exp $
+ * $Id: fs.c,v 1.62 2005/08/06 04:51:30 nico Exp $
*
*/
@@ -664,7 +664,14 @@ static int jffs2_flash_setup(struct jffs2_sb_info *c) {
if (ret)
return ret;
}
-
+
+ /* and Intel "Sibley" flash */
+ if (jffs2_nor_wbuf_flash(c)) {
+ ret = jffs2_nor_wbuf_flash_setup(c);
+ if (ret)
+ return ret;
+ }
+
return ret;
}
@@ -683,4 +690,9 @@ void jffs2_flash_cleanup(struct jffs2_sb_info *c) {
if (jffs2_dataflash(c)) {
jffs2_dataflash_cleanup(c);
}
+
+ /* and Intel "Sibley" flash */
+ if (jffs2_nor_wbuf_flash(c)) {
+ jffs2_nor_wbuf_flash_cleanup(c);
+ }
}
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 0fc952eaf8c..c3c1619fb13 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: os-linux.h,v 1.59 2005/07/17 11:13:46 dedekind Exp $
+ * $Id: os-linux.h,v 1.60 2005/08/06 04:51:30 nico Exp $
*
*/
@@ -85,16 +85,21 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#define jffs2_wbuf_process NULL
#define jffs2_nor_ecc(c) (0)
#define jffs2_dataflash(c) (0)
+#define jffs2_nor_wbuf_flash(c) (0)
#define jffs2_nor_ecc_flash_setup(c) (0)
#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
#define jffs2_dataflash_setup(c) (0)
#define jffs2_dataflash_cleanup(c) do {} while (0)
+#define jffs2_nor_wbuf_flash_setup(c) (0)
+#define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
#else /* NAND and/or ECC'd NOR support present */
#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
#define SECTOR_ADDR(x) ( ((unsigned long)(x) / (unsigned long)(c->sector_size)) * c->sector_size )
-#define jffs2_can_mark_obsolete(c) ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & MTD_ECC)) || c->mtd->type == MTD_RAM)
+#define jffs2_can_mark_obsolete(c) \
+ ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & (MTD_ECC|MTD_PROGRAM_REGIONS))) || \
+ c->mtd->type == MTD_RAM)
#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
#define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
@@ -124,6 +129,10 @@ void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c);
int jffs2_dataflash_setup(struct jffs2_sb_info *c);
void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
+#define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_PROGRAM_REGIONS))
+int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
+void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
+
#endif /* WRITEBUFFER */
/* erase.c */
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 251ac3d86f9..8c06d3a2b17 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -9,7 +9,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: wbuf.c,v 1.96 2005/07/22 10:32:08 dedekind Exp $
+ * $Id: wbuf.c,v 1.97 2005/08/06 04:51:30 nico Exp $
*
*/
@@ -1235,3 +1235,23 @@ int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c) {
kfree(c->wbuf);
}
+
+int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c) {
+ /* Cleanmarker currently occupies a whole programming region */
+ c->cleanmarker_size = MTD_PROGREGION_SIZE(c->mtd);
+
+ /* Initialize write buffer */
+ init_rwsem(&c->wbuf_sem);
+ c->wbuf_pagesize = MTD_PROGREGION_SIZE(c->mtd);
+ c->wbuf_ofs = 0xFFFFFFFF;
+
+ c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
+ if (!c->wbuf)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c) {
+ kfree(c->wbuf);
+}