Commit 8fcffeba authored by Mateusz Kozlowski's avatar Mateusz Kozlowski Committed by Tomasz Zawadzki
Browse files

lib/ftl: Add helper functions for layout 



Calculating aligned number of blocks for an md region.

Change-Id: Iad214490129ce78341ea0f472326f8c962c34d2e
Signed-off-by: default avatarMateusz Kozlowski <mateusz.kozlowski@solidigm.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/20522


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarBen Walker <ben@nvidia.com>
Reviewed-by: default avatarArtur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: default avatarJim Harris <jim.harris@samsung.com>
Community-CI: Mellanox Build Bot
parent 30ef80cd

lib/ftl/ftl_layout.c

+18 −0
Original line number Diff line number Diff line
@@ -64,6 +64,18 @@ ftl_md_region_blocks(struct spdk_ftl_dev *dev, uint64_t bytes) 
	return result;

}



uint64_t

ftl_md_region_align_blocks(struct spdk_ftl_dev *dev, uint64_t blocks)

{

	const uint64_t alignment = superblock_region_blocks(dev);

	uint64_t result;



	result = spdk_divide_round_up(blocks, alignment);

	result *= alignment;



	return result;

}



const char *

ftl_md_region_name(enum ftl_layout_region_type reg_type)

{
@@ -179,6 +191,12 @@ ftl_layout_region_get(struct spdk_ftl_dev *dev, enum ftl_layout_region_type reg_ 
	return reg->type == reg_type ? reg : NULL;

}



uint64_t

ftl_layout_base_offset(struct spdk_ftl_dev *dev)

{

	return dev->num_bands * ftl_get_num_blocks_in_band(dev);

}



static int

setup_layout_nvc(struct spdk_ftl_dev *dev)

{

lib/ftl/ftl_layout.h

+12 −0
Original line number Diff line number Diff line
@@ -188,6 +188,16 @@ struct ftl_md_layout_ops { 
 */

uint64_t ftl_md_region_blocks(struct spdk_ftl_dev *dev, uint64_t bytes);



/**

 * @brief Get number of blocks for md_region aligned to a common value

 *

 * @param dev ftl device

 * @param blocks size of the MD region in blocks

 *

 * @retval Aligned number of blocks required to store an MD region

 */

uint64_t ftl_md_region_align_blocks(struct spdk_ftl_dev *dev, uint64_t blocks);



/**

 * @brief Get name of an MD region

 *
@@ -226,4 +236,6 @@ uint64_t ftl_layout_base_md_blocks(struct spdk_ftl_dev *dev); 
struct ftl_layout_region *ftl_layout_region_get(struct spdk_ftl_dev *dev,

		enum ftl_layout_region_type reg_type);



uint64_t ftl_layout_base_offset(struct spdk_ftl_dev *dev);



#endif /* FTL_LAYOUT_H */