[U-Boot] [PATCH v5 12/30] disk/part.c: Expose list of available block drivers

Alexander Graf
2016-03-04T00:09:56Z

We have a pretty nice and generic interface to ask for a specific block
device. However, that one is still based around the magic notion that
we know the driver name.

In order to be able to write fully generic disk access code, expose the
currently internal list to other source files so that they can scan through
all available block drivers.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
---
disk/part.c | 7 +------
include/part.h | 8 ++++++++
2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/disk/part.c b/disk/part.c
index 1935b28..d265c2b 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -20,13 +20,8 @@
#define PRINTF(fmt,args...)
#endif

-struct block_drvr {
- char *name;
- block_dev_desc_t* (*get_dev)(int dev);
- int (*select_hwpart)(int dev_num, int hwpart);
-};

-static const struct block_drvr block_drvr[] = {
+const struct block_drvr block_drvr[] = {
#if defined(CONFIG_CMD_IDE)
{ .name = "ide", .get_dev = ide_get_dev, },
#endif
diff --git a/include/part.h b/include/part.h
index dc23949..6e6205b 100644
--- a/include/part.h
+++ b/include/part.h
@@ -42,6 +42,12 @@ struct block_dev_desc {
void *priv; /* driver private struct pointer */
};

+struct block_drvr {
+ char *name;
+ block_dev_desc_t* (*get_dev)(int dev);
+ int (*select_hwpart)(int dev_num, int hwpart);
+};
+
#define BLOCK_CNT(size, block_dev_desc) (PAD_COUNT(size, block_dev_desc->blksz))
#define PAD_TO_BLOCKSIZE(size, block_dev_desc) \
(PAD_SIZE(size, block_dev_desc->blksz))
@@ -123,6 +129,8 @@ int get_device(const char *ifname, const char *dev_str,
int get_device_and_partition(const char *ifname, const char *dev_part_str,
block_dev_desc_t **dev_desc,
disk_partition_t *info, int allow_whole_dev);
+
+extern const struct block_drvr block_drvr[];
#else
static inline block_dev_desc_t *get_dev(const char *ifname, int dev)
{ return NULL; }
--
1.8.5.6