diff options
| author | Jared Hulbert <jaredeh@gmail.com> | 2008-04-30 08:26:49 +0200 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2008-05-01 19:59:11 +0200 |
| commit | a98889f3d8882995b5aa2255b931cf0202325cc0 (patch) | |
| tree | 686a1d3369143dc46c43709e0c40b2cc8ef619d7 /drivers/mtd/devices/slram.c | |
| parent | [JFFS2] Track parent inode for directories (for NFS export) (diff) | |
| download | linux-a98889f3d8882995b5aa2255b931cf0202325cc0.tar.xz linux-a98889f3d8882995b5aa2255b931cf0202325cc0.zip | |
[MTD][NOR] Add physical address to point() method
Adding the ability to get a physical address from point() in addition
to virtual address. This physical address is required for XIP of
userspace code from flash.
Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Reviewed-by: Jörn Engel <joern@logfs.org>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd/devices/slram.c')
| -rw-r--r-- | drivers/mtd/devices/slram.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index d293add1857c..cb86db746f28 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -76,8 +76,9 @@ static char *map; static slram_mtd_list_t *slram_mtdlist = NULL; static int slram_erase(struct mtd_info *, struct erase_info *); -static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, u_char **); -static void slram_unpoint(struct mtd_info *, u_char *, loff_t, size_t); +static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, void **, + resource_size_t *); +static void slram_unpoint(struct mtd_info *, loff_t, size_t); static int slram_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int slram_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *); @@ -104,19 +105,23 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr) } static int slram_point(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char **mtdbuf) + size_t *retlen, void **virt, resource_size_t *phys) { slram_priv_t *priv = mtd->priv; + /* can we return a physical address with this driver? */ + if (phys) + return -EINVAL; + if (from + len > mtd->size) return -EINVAL; - *mtdbuf = priv->start + from; + *virt = priv->start + from; *retlen = len; return(0); } -static void slram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from, size_t len) +static void slram_unpoint(struct mtd_info *mtd, loff_t from, size_t len) { } |