Introduce scsi_get_blk_by_type_guid() function to enable SCSI partition discovery using partition type GUID. This function scans all available SCSI devices and searches for a partition matching the specified type GUID.
Signed-off-by: Balaji Selvanathan <[email protected]> --- drivers/scsi/scsi-uclass.c | 28 ++++++++++++++++++++++++++++ include/scsi.h | 11 +++++++++++ 2 files changed, 39 insertions(+) diff --git a/drivers/scsi/scsi-uclass.c b/drivers/scsi/scsi-uclass.c index 3eb6069649f..42a6b5233c2 100644 --- a/drivers/scsi/scsi-uclass.c +++ b/drivers/scsi/scsi-uclass.c @@ -53,6 +53,34 @@ int scsi_get_blk_by_uuid(const char *uuid, return -1; } +int scsi_get_blk_by_type_guid(const char *type_guid, + struct blk_desc **blk_desc_ptr, + struct disk_partition *part_info_ptr) +{ + static int is_scsi_scanned; + struct blk_desc *blk; + int i, ret; + + if (!is_scsi_scanned) { + scsi_scan(false /* no verbose */); + is_scsi_scanned = 1; + } + + for (i = 0; i < blk_find_max_devnum(UCLASS_SCSI) + 1; i++) { + ret = blk_get_desc(UCLASS_SCSI, i, &blk); + if (ret) + continue; + + ret = part_get_info_by_type_guid(blk, type_guid, part_info_ptr); + if (ret > 0) { + *blk_desc_ptr = blk; + return 0; + } + } + + return -1; +} + int scsi_bus_reset(struct udevice *dev) { struct scsi_ops *ops = scsi_get_ops(dev); diff --git a/include/scsi.h b/include/scsi.h index 8d6c5116419..e0b2f869057 100644 --- a/include/scsi.h +++ b/include/scsi.h @@ -361,6 +361,17 @@ int scsi_scan_dev(struct udevice *dev, bool verbose); int scsi_get_blk_by_uuid(const char *uuid, struct blk_desc **blk_desc_ptr, struct disk_partition *part_info_ptr); + +/** + * scsi_get_blk_by_type_guid() - Provides SCSI partition information by type GUID. + * + * @type_guid: Type GUID of the partition for fetching its info + * @blk_desc_ptr: Provides the blk descriptor + * @part_info_ptr: Provides partition info + */ +int scsi_get_blk_by_type_guid(const char *type_guid, struct blk_desc **blk_desc_ptr, + struct disk_partition *part_info_ptr); + #define SCSI_IDENTIFY 0xC0 /* not used */ /* Hardware errors */ -- 2.34.1
