From a98889f3d8882995b5aa2255b931cf0202325cc0 Mon Sep 17 00:00:00 2001 From: Jared Hulbert Date: Tue, 29 Apr 2008 23:26:49 -0700 Subject: [MTD][NOR] Add physical address to point() method MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Jörn Engel Acked-by: Nicolas Pitre Acked-by: Greg Ungerer Signed-off-by: David Woodhouse --- drivers/mtd/devices/slram.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers/mtd/devices/slram.c') 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) { } -- cgit v1.2.2