e47e16d3a4
FTL working on top of zoned bdev doesn't need physical page address (PPA) anymore. ftl_ppa was replaced with ftl_addr which represents zoned device addressing schema. Change-Id: Ied5750a7ab2f4ce42067ff3e69c1f26f85f5022a Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/467633 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef FTL_ADDR_H
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#define FTL_ADDR_H
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#include "spdk/stdinc.h"
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/* Marks address as invalid */
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#define FTL_ADDR_INVALID (-1)
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/* Marks LBA as invalid */
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#define FTL_LBA_INVALID ((uint64_t)-1)
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/* Smallest data unit size */
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#define FTL_BLOCK_SIZE 4096
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/* This structure represents on-disk address. It can have one of the following */
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/* formats: */
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/* - addr describing the raw address */
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/* - cache_offset inside the cache (indicated by the cached flag) */
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/* - packed version of the two formats above (can be only used when the */
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/* raw address can be represented in less than 32 bits) */
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/* Packed format is used, when possible, to avoid wasting RAM on the L2P table. */
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struct ftl_addr {
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union {
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struct {
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uint64_t offset : 32;
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uint64_t zone_id : 16;
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uint64_t pu : 15;
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uint64_t rsvd : 1;
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};
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struct {
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uint64_t cache_offset : 63;
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uint64_t cached : 1;
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};
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struct {
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union {
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struct {
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uint32_t cache_offset : 31;
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uint32_t cached : 1;
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};
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uint32_t addr;
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};
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uint32_t rsvd;
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} pack;
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uint64_t addr;
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};
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};
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struct ftl_ppa_fmt {
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/* Logical block */
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unsigned int lbk_offset;
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unsigned int lbk_mask;
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/* Chunk */
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unsigned int chk_offset;
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unsigned int chk_mask;
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/* Parallel unit (NAND die) */
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unsigned int pu_offset;
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unsigned int pu_mask;
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/* Group */
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unsigned int grp_offset;
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unsigned int grp_mask;
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};
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#endif /* FTL_ADDR_H */
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