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disk/part.c: Expose list of available block drivers

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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>
This commit is contained in:
Alexander Graf 2016-03-04 01:09:56 +01:00 committed by Tom Rini
parent 19503c3117
commit d96a98045a
2 changed files with 8 additions and 7 deletions
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8
disk/part.c
View File

@ -21,13 +21,7 @@
#define PRINTF(fmt,args...)
#endif
struct block_drvr {
char *name;
struct blk_desc* (*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

7
include/part.h
View File

@ -10,6 +10,12 @@
#include <blk.h>
#include <ide.h>
struct block_drvr {
char *name;
struct blk_desc* (*get_dev)(int dev);
int (*select_hwpart)(int dev_num, int hwpart);
};
#define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \
((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \
((x & 0xffff0000) ? 16 : 0))
@ -165,6 +171,7 @@ int blk_get_device_by_str(const char *ifname, const char *dev_str,
int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
struct blk_desc **dev_desc,
disk_partition_t *info, int allow_whole_dev);
extern const struct block_drvr block_drvr[];
#else
static inline struct blk_desc *blk_get_dev(const char *ifname, int dev)
{ return NULL; }