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1274 lines
32 KiB
1274 lines
32 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* nvme-lightnvm.c - LightNVM NVMe device |
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* |
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* Copyright (C) 2014-2015 IT University of Copenhagen |
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* Initial release: Matias Bjorling <[email protected]> |
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*/ |
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|
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#include "nvme.h" |
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|
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#include <linux/nvme.h> |
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#include <linux/bitops.h> |
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#include <linux/lightnvm.h> |
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#include <linux/vmalloc.h> |
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#include <linux/sched/sysctl.h> |
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#include <uapi/linux/lightnvm.h> |
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|
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enum nvme_nvm_admin_opcode { |
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nvme_nvm_admin_identity = 0xe2, |
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nvme_nvm_admin_get_bb_tbl = 0xf2, |
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nvme_nvm_admin_set_bb_tbl = 0xf1, |
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}; |
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|
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enum nvme_nvm_log_page { |
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NVME_NVM_LOG_REPORT_CHUNK = 0xca, |
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}; |
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|
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struct nvme_nvm_ph_rw { |
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__u8 opcode; |
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__u8 flags; |
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__u16 command_id; |
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__le32 nsid; |
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__u64 rsvd2; |
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__le64 metadata; |
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__le64 prp1; |
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__le64 prp2; |
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__le64 spba; |
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__le16 length; |
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__le16 control; |
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__le32 dsmgmt; |
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__le64 resv; |
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}; |
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struct nvme_nvm_erase_blk { |
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__u8 opcode; |
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__u8 flags; |
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__u16 command_id; |
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__le32 nsid; |
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__u64 rsvd[2]; |
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__le64 prp1; |
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__le64 prp2; |
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__le64 spba; |
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__le16 length; |
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__le16 control; |
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__le32 dsmgmt; |
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__le64 resv; |
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}; |
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struct nvme_nvm_identity { |
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__u8 opcode; |
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__u8 flags; |
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__u16 command_id; |
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__le32 nsid; |
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__u64 rsvd[2]; |
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__le64 prp1; |
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__le64 prp2; |
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__u32 rsvd11[6]; |
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}; |
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|
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struct nvme_nvm_getbbtbl { |
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__u8 opcode; |
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__u8 flags; |
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__u16 command_id; |
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__le32 nsid; |
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__u64 rsvd[2]; |
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__le64 prp1; |
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__le64 prp2; |
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__le64 spba; |
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__u32 rsvd4[4]; |
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}; |
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|
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struct nvme_nvm_setbbtbl { |
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__u8 opcode; |
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__u8 flags; |
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__u16 command_id; |
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__le32 nsid; |
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__le64 rsvd[2]; |
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__le64 prp1; |
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__le64 prp2; |
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__le64 spba; |
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__le16 nlb; |
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__u8 value; |
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__u8 rsvd3; |
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__u32 rsvd4[3]; |
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}; |
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|
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struct nvme_nvm_command { |
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union { |
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struct nvme_common_command common; |
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struct nvme_nvm_ph_rw ph_rw; |
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struct nvme_nvm_erase_blk erase; |
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struct nvme_nvm_identity identity; |
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struct nvme_nvm_getbbtbl get_bb; |
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struct nvme_nvm_setbbtbl set_bb; |
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}; |
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}; |
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|
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struct nvme_nvm_id12_grp { |
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__u8 mtype; |
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__u8 fmtype; |
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__le16 res16; |
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__u8 num_ch; |
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__u8 num_lun; |
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__u8 num_pln; |
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__u8 rsvd1; |
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__le16 num_chk; |
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__le16 num_pg; |
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__le16 fpg_sz; |
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__le16 csecs; |
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__le16 sos; |
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__le16 rsvd2; |
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__le32 trdt; |
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__le32 trdm; |
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__le32 tprt; |
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__le32 tprm; |
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__le32 tbet; |
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__le32 tbem; |
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__le32 mpos; |
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__le32 mccap; |
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__le16 cpar; |
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__u8 reserved[906]; |
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} __packed; |
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|
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struct nvme_nvm_id12_addrf { |
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__u8 ch_offset; |
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__u8 ch_len; |
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__u8 lun_offset; |
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__u8 lun_len; |
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__u8 pln_offset; |
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__u8 pln_len; |
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__u8 blk_offset; |
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__u8 blk_len; |
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__u8 pg_offset; |
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__u8 pg_len; |
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__u8 sec_offset; |
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__u8 sec_len; |
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__u8 res[4]; |
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} __packed; |
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|
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struct nvme_nvm_id12 { |
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__u8 ver_id; |
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__u8 vmnt; |
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__u8 cgrps; |
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__u8 res; |
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__le32 cap; |
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__le32 dom; |
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struct nvme_nvm_id12_addrf ppaf; |
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__u8 resv[228]; |
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struct nvme_nvm_id12_grp grp; |
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__u8 resv2[2880]; |
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} __packed; |
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|
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struct nvme_nvm_bb_tbl { |
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__u8 tblid[4]; |
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__le16 verid; |
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__le16 revid; |
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__le32 rvsd1; |
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__le32 tblks; |
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__le32 tfact; |
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__le32 tgrown; |
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__le32 tdresv; |
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__le32 thresv; |
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__le32 rsvd2[8]; |
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__u8 blk[]; |
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}; |
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|
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struct nvme_nvm_id20_addrf { |
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__u8 grp_len; |
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__u8 pu_len; |
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__u8 chk_len; |
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__u8 lba_len; |
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__u8 resv[4]; |
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}; |
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|
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struct nvme_nvm_id20 { |
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__u8 mjr; |
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__u8 mnr; |
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__u8 resv[6]; |
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|
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struct nvme_nvm_id20_addrf lbaf; |
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|
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__le32 mccap; |
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__u8 resv2[12]; |
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|
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__u8 wit; |
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__u8 resv3[31]; |
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|
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/* Geometry */ |
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__le16 num_grp; |
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__le16 num_pu; |
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__le32 num_chk; |
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__le32 clba; |
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__u8 resv4[52]; |
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|
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/* Write data requirements */ |
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__le32 ws_min; |
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__le32 ws_opt; |
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__le32 mw_cunits; |
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__le32 maxoc; |
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__le32 maxocpu; |
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__u8 resv5[44]; |
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|
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/* Performance related metrics */ |
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__le32 trdt; |
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__le32 trdm; |
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__le32 twrt; |
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__le32 twrm; |
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__le32 tcrst; |
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__le32 tcrsm; |
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__u8 resv6[40]; |
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|
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/* Reserved area */ |
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__u8 resv7[2816]; |
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|
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/* Vendor specific */ |
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__u8 vs[1024]; |
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}; |
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|
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struct nvme_nvm_chk_meta { |
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__u8 state; |
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__u8 type; |
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__u8 wi; |
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__u8 rsvd[5]; |
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__le64 slba; |
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__le64 cnlb; |
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__le64 wp; |
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}; |
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|
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/* |
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* Check we didn't inadvertently grow the command struct |
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*/ |
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static inline void _nvme_nvm_check_size(void) |
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{ |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_grp) != 960); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_addrf) != 16); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_id12) != NVME_IDENTIFY_DATA_SIZE); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 64); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_id20_addrf) != 8); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_id20) != NVME_IDENTIFY_DATA_SIZE); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != 32); |
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BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != |
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sizeof(struct nvm_chk_meta)); |
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} |
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|
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static void nvme_nvm_set_addr_12(struct nvm_addrf_12 *dst, |
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struct nvme_nvm_id12_addrf *src) |
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{ |
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dst->ch_len = src->ch_len; |
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dst->lun_len = src->lun_len; |
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dst->blk_len = src->blk_len; |
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dst->pg_len = src->pg_len; |
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dst->pln_len = src->pln_len; |
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dst->sec_len = src->sec_len; |
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|
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dst->ch_offset = src->ch_offset; |
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dst->lun_offset = src->lun_offset; |
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dst->blk_offset = src->blk_offset; |
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dst->pg_offset = src->pg_offset; |
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dst->pln_offset = src->pln_offset; |
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dst->sec_offset = src->sec_offset; |
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|
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dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset; |
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dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset; |
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dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset; |
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dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset; |
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dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset; |
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dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset; |
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} |
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static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id, |
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struct nvm_geo *geo) |
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{ |
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struct nvme_nvm_id12_grp *src; |
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int sec_per_pg, sec_per_pl, pg_per_blk; |
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|
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if (id->cgrps != 1) |
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return -EINVAL; |
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src = &id->grp; |
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|
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if (src->mtype != 0) { |
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pr_err("nvm: memory type not supported\n"); |
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return -EINVAL; |
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} |
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/* 1.2 spec. only reports a single version id - unfold */ |
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geo->major_ver_id = id->ver_id; |
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geo->minor_ver_id = 2; |
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/* Set compacted version for upper layers */ |
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geo->version = NVM_OCSSD_SPEC_12; |
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geo->num_ch = src->num_ch; |
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geo->num_lun = src->num_lun; |
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geo->all_luns = geo->num_ch * geo->num_lun; |
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geo->num_chk = le16_to_cpu(src->num_chk); |
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geo->csecs = le16_to_cpu(src->csecs); |
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geo->sos = le16_to_cpu(src->sos); |
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pg_per_blk = le16_to_cpu(src->num_pg); |
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sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs; |
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sec_per_pl = sec_per_pg * src->num_pln; |
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geo->clba = sec_per_pl * pg_per_blk; |
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geo->all_chunks = geo->all_luns * geo->num_chk; |
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geo->total_secs = geo->clba * geo->all_chunks; |
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geo->ws_min = sec_per_pg; |
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geo->ws_opt = sec_per_pg; |
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geo->mw_cunits = geo->ws_opt << 3; /* default to MLC safe values */ |
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|
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/* Do not impose values for maximum number of open blocks as it is |
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* unspecified in 1.2. Users of 1.2 must be aware of this and eventually |
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* specify these values through a quirk if restrictions apply. |
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*/ |
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geo->maxoc = geo->all_luns * geo->num_chk; |
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geo->maxocpu = geo->num_chk; |
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geo->mccap = le32_to_cpu(src->mccap); |
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geo->trdt = le32_to_cpu(src->trdt); |
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geo->trdm = le32_to_cpu(src->trdm); |
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geo->tprt = le32_to_cpu(src->tprt); |
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geo->tprm = le32_to_cpu(src->tprm); |
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geo->tbet = le32_to_cpu(src->tbet); |
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geo->tbem = le32_to_cpu(src->tbem); |
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|
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/* 1.2 compatibility */ |
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geo->vmnt = id->vmnt; |
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geo->cap = le32_to_cpu(id->cap); |
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geo->dom = le32_to_cpu(id->dom); |
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|
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geo->mtype = src->mtype; |
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geo->fmtype = src->fmtype; |
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|
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geo->cpar = le16_to_cpu(src->cpar); |
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geo->mpos = le32_to_cpu(src->mpos); |
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geo->pln_mode = NVM_PLANE_SINGLE; |
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|
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if (geo->mpos & 0x020202) { |
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geo->pln_mode = NVM_PLANE_DOUBLE; |
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geo->ws_opt <<= 1; |
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} else if (geo->mpos & 0x040404) { |
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geo->pln_mode = NVM_PLANE_QUAD; |
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geo->ws_opt <<= 2; |
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} |
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geo->num_pln = src->num_pln; |
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geo->num_pg = le16_to_cpu(src->num_pg); |
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geo->fpg_sz = le16_to_cpu(src->fpg_sz); |
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nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf); |
|
|
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return 0; |
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} |
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|
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static void nvme_nvm_set_addr_20(struct nvm_addrf *dst, |
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struct nvme_nvm_id20_addrf *src) |
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{ |
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dst->ch_len = src->grp_len; |
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dst->lun_len = src->pu_len; |
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dst->chk_len = src->chk_len; |
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dst->sec_len = src->lba_len; |
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|
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dst->sec_offset = 0; |
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dst->chk_offset = dst->sec_len; |
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dst->lun_offset = dst->chk_offset + dst->chk_len; |
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dst->ch_offset = dst->lun_offset + dst->lun_len; |
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|
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dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset; |
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dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset; |
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dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset; |
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dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset; |
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} |
|
|
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static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id, |
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struct nvm_geo *geo) |
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{ |
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geo->major_ver_id = id->mjr; |
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geo->minor_ver_id = id->mnr; |
|
|
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/* Set compacted version for upper layers */ |
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geo->version = NVM_OCSSD_SPEC_20; |
|
|
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geo->num_ch = le16_to_cpu(id->num_grp); |
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geo->num_lun = le16_to_cpu(id->num_pu); |
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geo->all_luns = geo->num_ch * geo->num_lun; |
|
|
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geo->num_chk = le32_to_cpu(id->num_chk); |
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geo->clba = le32_to_cpu(id->clba); |
|
|
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geo->all_chunks = geo->all_luns * geo->num_chk; |
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geo->total_secs = geo->clba * geo->all_chunks; |
|
|
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geo->ws_min = le32_to_cpu(id->ws_min); |
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geo->ws_opt = le32_to_cpu(id->ws_opt); |
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geo->mw_cunits = le32_to_cpu(id->mw_cunits); |
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geo->maxoc = le32_to_cpu(id->maxoc); |
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geo->maxocpu = le32_to_cpu(id->maxocpu); |
|
|
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geo->trdt = le32_to_cpu(id->trdt); |
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geo->trdm = le32_to_cpu(id->trdm); |
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geo->tprt = le32_to_cpu(id->twrt); |
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geo->tprm = le32_to_cpu(id->twrm); |
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geo->tbet = le32_to_cpu(id->tcrst); |
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geo->tbem = le32_to_cpu(id->tcrsm); |
|
|
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nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf); |
|
|
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return 0; |
|
} |
|
|
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static int nvme_nvm_identity(struct nvm_dev *nvmdev) |
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{ |
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struct nvme_ns *ns = nvmdev->q->queuedata; |
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struct nvme_nvm_id12 *id; |
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struct nvme_nvm_command c = {}; |
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int ret; |
|
|
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c.identity.opcode = nvme_nvm_admin_identity; |
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c.identity.nsid = cpu_to_le32(ns->head->ns_id); |
|
|
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id = kmalloc(sizeof(struct nvme_nvm_id12), GFP_KERNEL); |
|
if (!id) |
|
return -ENOMEM; |
|
|
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ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c, |
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id, sizeof(struct nvme_nvm_id12)); |
|
if (ret) { |
|
ret = -EIO; |
|
goto out; |
|
} |
|
|
|
/* |
|
* The 1.2 and 2.0 specifications share the first byte in their geometry |
|
* command to make it possible to know what version a device implements. |
|
*/ |
|
switch (id->ver_id) { |
|
case 1: |
|
ret = nvme_nvm_setup_12(id, &nvmdev->geo); |
|
break; |
|
case 2: |
|
ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id, |
|
&nvmdev->geo); |
|
break; |
|
default: |
|
dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n", |
|
id->ver_id); |
|
ret = -EINVAL; |
|
} |
|
|
|
out: |
|
kfree(id); |
|
return ret; |
|
} |
|
|
|
static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa, |
|
u8 *blks) |
|
{ |
|
struct request_queue *q = nvmdev->q; |
|
struct nvm_geo *geo = &nvmdev->geo; |
|
struct nvme_ns *ns = q->queuedata; |
|
struct nvme_ctrl *ctrl = ns->ctrl; |
|
struct nvme_nvm_command c = {}; |
|
struct nvme_nvm_bb_tbl *bb_tbl; |
|
int nr_blks = geo->num_chk * geo->num_pln; |
|
int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks; |
|
int ret = 0; |
|
|
|
c.get_bb.opcode = nvme_nvm_admin_get_bb_tbl; |
|
c.get_bb.nsid = cpu_to_le32(ns->head->ns_id); |
|
c.get_bb.spba = cpu_to_le64(ppa.ppa); |
|
|
|
bb_tbl = kzalloc(tblsz, GFP_KERNEL); |
|
if (!bb_tbl) |
|
return -ENOMEM; |
|
|
|
ret = nvme_submit_sync_cmd(ctrl->admin_q, (struct nvme_command *)&c, |
|
bb_tbl, tblsz); |
|
if (ret) { |
|
dev_err(ctrl->device, "get bad block table failed (%d)\n", ret); |
|
ret = -EIO; |
|
goto out; |
|
} |
|
|
|
if (bb_tbl->tblid[0] != 'B' || bb_tbl->tblid[1] != 'B' || |
|
bb_tbl->tblid[2] != 'L' || bb_tbl->tblid[3] != 'T') { |
|
dev_err(ctrl->device, "bbt format mismatch\n"); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (le16_to_cpu(bb_tbl->verid) != 1) { |
|
ret = -EINVAL; |
|
dev_err(ctrl->device, "bbt version not supported\n"); |
|
goto out; |
|
} |
|
|
|
if (le32_to_cpu(bb_tbl->tblks) != nr_blks) { |
|
ret = -EINVAL; |
|
dev_err(ctrl->device, |
|
"bbt unsuspected blocks returned (%u!=%u)", |
|
le32_to_cpu(bb_tbl->tblks), nr_blks); |
|
goto out; |
|
} |
|
|
|
memcpy(blks, bb_tbl->blk, geo->num_chk * geo->num_pln); |
|
out: |
|
kfree(bb_tbl); |
|
return ret; |
|
} |
|
|
|
static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas, |
|
int nr_ppas, int type) |
|
{ |
|
struct nvme_ns *ns = nvmdev->q->queuedata; |
|
struct nvme_nvm_command c = {}; |
|
int ret = 0; |
|
|
|
c.set_bb.opcode = nvme_nvm_admin_set_bb_tbl; |
|
c.set_bb.nsid = cpu_to_le32(ns->head->ns_id); |
|
c.set_bb.spba = cpu_to_le64(ppas->ppa); |
|
c.set_bb.nlb = cpu_to_le16(nr_ppas - 1); |
|
c.set_bb.value = type; |
|
|
|
ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c, |
|
NULL, 0); |
|
if (ret) |
|
dev_err(ns->ctrl->device, "set bad block table failed (%d)\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
/* |
|
* Expect the lba in device format |
|
*/ |
|
static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev, |
|
sector_t slba, int nchks, |
|
struct nvm_chk_meta *meta) |
|
{ |
|
struct nvm_geo *geo = &ndev->geo; |
|
struct nvme_ns *ns = ndev->q->queuedata; |
|
struct nvme_ctrl *ctrl = ns->ctrl; |
|
struct nvme_nvm_chk_meta *dev_meta, *dev_meta_off; |
|
struct ppa_addr ppa; |
|
size_t left = nchks * sizeof(struct nvme_nvm_chk_meta); |
|
size_t log_pos, offset, len; |
|
int i, max_len; |
|
int ret = 0; |
|
|
|
/* |
|
* limit requests to maximum 256K to avoid issuing arbitrary large |
|
* requests when the device does not specific a maximum transfer size. |
|
*/ |
|
max_len = min_t(unsigned int, ctrl->max_hw_sectors << 9, 256 * 1024); |
|
|
|
dev_meta = kmalloc(max_len, GFP_KERNEL); |
|
if (!dev_meta) |
|
return -ENOMEM; |
|
|
|
/* Normalize lba address space to obtain log offset */ |
|
ppa.ppa = slba; |
|
ppa = dev_to_generic_addr(ndev, ppa); |
|
|
|
log_pos = ppa.m.chk; |
|
log_pos += ppa.m.pu * geo->num_chk; |
|
log_pos += ppa.m.grp * geo->num_lun * geo->num_chk; |
|
|
|
offset = log_pos * sizeof(struct nvme_nvm_chk_meta); |
|
|
|
while (left) { |
|
len = min_t(unsigned int, left, max_len); |
|
|
|
memset(dev_meta, 0, max_len); |
|
dev_meta_off = dev_meta; |
|
|
|
ret = nvme_get_log(ctrl, ns->head->ns_id, |
|
NVME_NVM_LOG_REPORT_CHUNK, 0, NVME_CSI_NVM, |
|
dev_meta, len, offset); |
|
if (ret) { |
|
dev_err(ctrl->device, "Get REPORT CHUNK log error\n"); |
|
break; |
|
} |
|
|
|
for (i = 0; i < len; i += sizeof(struct nvme_nvm_chk_meta)) { |
|
meta->state = dev_meta_off->state; |
|
meta->type = dev_meta_off->type; |
|
meta->wi = dev_meta_off->wi; |
|
meta->slba = le64_to_cpu(dev_meta_off->slba); |
|
meta->cnlb = le64_to_cpu(dev_meta_off->cnlb); |
|
meta->wp = le64_to_cpu(dev_meta_off->wp); |
|
|
|
meta++; |
|
dev_meta_off++; |
|
} |
|
|
|
offset += len; |
|
left -= len; |
|
} |
|
|
|
kfree(dev_meta); |
|
|
|
return ret; |
|
} |
|
|
|
static inline void nvme_nvm_rqtocmd(struct nvm_rq *rqd, struct nvme_ns *ns, |
|
struct nvme_nvm_command *c) |
|
{ |
|
c->ph_rw.opcode = rqd->opcode; |
|
c->ph_rw.nsid = cpu_to_le32(ns->head->ns_id); |
|
c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa); |
|
c->ph_rw.metadata = cpu_to_le64(rqd->dma_meta_list); |
|
c->ph_rw.control = cpu_to_le16(rqd->flags); |
|
c->ph_rw.length = cpu_to_le16(rqd->nr_ppas - 1); |
|
} |
|
|
|
static void nvme_nvm_end_io(struct request *rq, blk_status_t status) |
|
{ |
|
struct nvm_rq *rqd = rq->end_io_data; |
|
|
|
rqd->ppa_status = le64_to_cpu(nvme_req(rq)->result.u64); |
|
rqd->error = nvme_req(rq)->status; |
|
nvm_end_io(rqd); |
|
|
|
kfree(nvme_req(rq)->cmd); |
|
blk_mq_free_request(rq); |
|
} |
|
|
|
static struct request *nvme_nvm_alloc_request(struct request_queue *q, |
|
struct nvm_rq *rqd, |
|
struct nvme_nvm_command *cmd) |
|
{ |
|
struct nvme_ns *ns = q->queuedata; |
|
struct request *rq; |
|
|
|
nvme_nvm_rqtocmd(rqd, ns, cmd); |
|
|
|
rq = nvme_alloc_request(q, (struct nvme_command *)cmd, 0); |
|
if (IS_ERR(rq)) |
|
return rq; |
|
|
|
rq->cmd_flags &= ~REQ_FAILFAST_DRIVER; |
|
|
|
if (rqd->bio) |
|
blk_rq_append_bio(rq, &rqd->bio); |
|
else |
|
rq->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM); |
|
|
|
return rq; |
|
} |
|
|
|
static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd, |
|
void *buf) |
|
{ |
|
struct nvm_geo *geo = &dev->geo; |
|
struct request_queue *q = dev->q; |
|
struct nvme_nvm_command *cmd; |
|
struct request *rq; |
|
int ret; |
|
|
|
cmd = kzalloc(sizeof(struct nvme_nvm_command), GFP_KERNEL); |
|
if (!cmd) |
|
return -ENOMEM; |
|
|
|
rq = nvme_nvm_alloc_request(q, rqd, cmd); |
|
if (IS_ERR(rq)) { |
|
ret = PTR_ERR(rq); |
|
goto err_free_cmd; |
|
} |
|
|
|
if (buf) { |
|
ret = blk_rq_map_kern(q, rq, buf, geo->csecs * rqd->nr_ppas, |
|
GFP_KERNEL); |
|
if (ret) |
|
goto err_free_cmd; |
|
} |
|
|
|
rq->end_io_data = rqd; |
|
|
|
blk_execute_rq_nowait(NULL, rq, 0, nvme_nvm_end_io); |
|
|
|
return 0; |
|
|
|
err_free_cmd: |
|
kfree(cmd); |
|
return ret; |
|
} |
|
|
|
static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name, |
|
int size) |
|
{ |
|
struct nvme_ns *ns = nvmdev->q->queuedata; |
|
|
|
return dma_pool_create(name, ns->ctrl->dev, size, PAGE_SIZE, 0); |
|
} |
|
|
|
static void nvme_nvm_destroy_dma_pool(void *pool) |
|
{ |
|
struct dma_pool *dma_pool = pool; |
|
|
|
dma_pool_destroy(dma_pool); |
|
} |
|
|
|
static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool, |
|
gfp_t mem_flags, dma_addr_t *dma_handler) |
|
{ |
|
return dma_pool_alloc(pool, mem_flags, dma_handler); |
|
} |
|
|
|
static void nvme_nvm_dev_dma_free(void *pool, void *addr, |
|
dma_addr_t dma_handler) |
|
{ |
|
dma_pool_free(pool, addr, dma_handler); |
|
} |
|
|
|
static struct nvm_dev_ops nvme_nvm_dev_ops = { |
|
.identity = nvme_nvm_identity, |
|
|
|
.get_bb_tbl = nvme_nvm_get_bb_tbl, |
|
.set_bb_tbl = nvme_nvm_set_bb_tbl, |
|
|
|
.get_chk_meta = nvme_nvm_get_chk_meta, |
|
|
|
.submit_io = nvme_nvm_submit_io, |
|
|
|
.create_dma_pool = nvme_nvm_create_dma_pool, |
|
.destroy_dma_pool = nvme_nvm_destroy_dma_pool, |
|
.dev_dma_alloc = nvme_nvm_dev_dma_alloc, |
|
.dev_dma_free = nvme_nvm_dev_dma_free, |
|
}; |
|
|
|
static int nvme_nvm_submit_user_cmd(struct request_queue *q, |
|
struct nvme_ns *ns, |
|
struct nvme_nvm_command *vcmd, |
|
void __user *ubuf, unsigned int bufflen, |
|
void __user *meta_buf, unsigned int meta_len, |
|
void __user *ppa_buf, unsigned int ppa_len, |
|
u32 *result, u64 *status, unsigned int timeout) |
|
{ |
|
bool write = nvme_is_write((struct nvme_command *)vcmd); |
|
struct nvm_dev *dev = ns->ndev; |
|
struct request *rq; |
|
struct bio *bio = NULL; |
|
__le64 *ppa_list = NULL; |
|
dma_addr_t ppa_dma; |
|
__le64 *metadata = NULL; |
|
dma_addr_t metadata_dma; |
|
DECLARE_COMPLETION_ONSTACK(wait); |
|
int ret = 0; |
|
|
|
rq = nvme_alloc_request(q, (struct nvme_command *)vcmd, 0); |
|
if (IS_ERR(rq)) { |
|
ret = -ENOMEM; |
|
goto err_cmd; |
|
} |
|
|
|
if (timeout) |
|
rq->timeout = timeout; |
|
|
|
if (ppa_buf && ppa_len) { |
|
ppa_list = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, &ppa_dma); |
|
if (!ppa_list) { |
|
ret = -ENOMEM; |
|
goto err_rq; |
|
} |
|
if (copy_from_user(ppa_list, (void __user *)ppa_buf, |
|
sizeof(u64) * (ppa_len + 1))) { |
|
ret = -EFAULT; |
|
goto err_ppa; |
|
} |
|
vcmd->ph_rw.spba = cpu_to_le64(ppa_dma); |
|
} else { |
|
vcmd->ph_rw.spba = cpu_to_le64((uintptr_t)ppa_buf); |
|
} |
|
|
|
if (ubuf && bufflen) { |
|
ret = blk_rq_map_user(q, rq, NULL, ubuf, bufflen, GFP_KERNEL); |
|
if (ret) |
|
goto err_ppa; |
|
bio = rq->bio; |
|
|
|
if (meta_buf && meta_len) { |
|
metadata = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, |
|
&metadata_dma); |
|
if (!metadata) { |
|
ret = -ENOMEM; |
|
goto err_map; |
|
} |
|
|
|
if (write) { |
|
if (copy_from_user(metadata, |
|
(void __user *)meta_buf, |
|
meta_len)) { |
|
ret = -EFAULT; |
|
goto err_meta; |
|
} |
|
} |
|
vcmd->ph_rw.metadata = cpu_to_le64(metadata_dma); |
|
} |
|
|
|
bio_set_dev(bio, ns->disk->part0); |
|
} |
|
|
|
blk_execute_rq(NULL, rq, 0); |
|
|
|
if (nvme_req(rq)->flags & NVME_REQ_CANCELLED) |
|
ret = -EINTR; |
|
else if (nvme_req(rq)->status & 0x7ff) |
|
ret = -EIO; |
|
if (result) |
|
*result = nvme_req(rq)->status & 0x7ff; |
|
if (status) |
|
*status = le64_to_cpu(nvme_req(rq)->result.u64); |
|
|
|
if (metadata && !ret && !write) { |
|
if (copy_to_user(meta_buf, (void *)metadata, meta_len)) |
|
ret = -EFAULT; |
|
} |
|
err_meta: |
|
if (meta_buf && meta_len) |
|
dma_pool_free(dev->dma_pool, metadata, metadata_dma); |
|
err_map: |
|
if (bio) |
|
blk_rq_unmap_user(bio); |
|
err_ppa: |
|
if (ppa_buf && ppa_len) |
|
dma_pool_free(dev->dma_pool, ppa_list, ppa_dma); |
|
err_rq: |
|
blk_mq_free_request(rq); |
|
err_cmd: |
|
return ret; |
|
} |
|
|
|
static int nvme_nvm_submit_vio(struct nvme_ns *ns, |
|
struct nvm_user_vio __user *uvio) |
|
{ |
|
struct nvm_user_vio vio; |
|
struct nvme_nvm_command c; |
|
unsigned int length; |
|
int ret; |
|
|
|
if (copy_from_user(&vio, uvio, sizeof(vio))) |
|
return -EFAULT; |
|
if (vio.flags) |
|
return -EINVAL; |
|
|
|
memset(&c, 0, sizeof(c)); |
|
c.ph_rw.opcode = vio.opcode; |
|
c.ph_rw.nsid = cpu_to_le32(ns->head->ns_id); |
|
c.ph_rw.control = cpu_to_le16(vio.control); |
|
c.ph_rw.length = cpu_to_le16(vio.nppas); |
|
|
|
length = (vio.nppas + 1) << ns->lba_shift; |
|
|
|
ret = nvme_nvm_submit_user_cmd(ns->queue, ns, &c, |
|
(void __user *)(uintptr_t)vio.addr, length, |
|
(void __user *)(uintptr_t)vio.metadata, |
|
vio.metadata_len, |
|
(void __user *)(uintptr_t)vio.ppa_list, vio.nppas, |
|
&vio.result, &vio.status, 0); |
|
|
|
if (ret && copy_to_user(uvio, &vio, sizeof(vio))) |
|
return -EFAULT; |
|
|
|
return ret; |
|
} |
|
|
|
static int nvme_nvm_user_vcmd(struct nvme_ns *ns, int admin, |
|
struct nvm_passthru_vio __user *uvcmd) |
|
{ |
|
struct nvm_passthru_vio vcmd; |
|
struct nvme_nvm_command c; |
|
struct request_queue *q; |
|
unsigned int timeout = 0; |
|
int ret; |
|
|
|
if (copy_from_user(&vcmd, uvcmd, sizeof(vcmd))) |
|
return -EFAULT; |
|
if ((vcmd.opcode != 0xF2) && (!capable(CAP_SYS_ADMIN))) |
|
return -EACCES; |
|
if (vcmd.flags) |
|
return -EINVAL; |
|
|
|
memset(&c, 0, sizeof(c)); |
|
c.common.opcode = vcmd.opcode; |
|
c.common.nsid = cpu_to_le32(ns->head->ns_id); |
|
c.common.cdw2[0] = cpu_to_le32(vcmd.cdw2); |
|
c.common.cdw2[1] = cpu_to_le32(vcmd.cdw3); |
|
/* cdw11-12 */ |
|
c.ph_rw.length = cpu_to_le16(vcmd.nppas); |
|
c.ph_rw.control = cpu_to_le16(vcmd.control); |
|
c.common.cdw13 = cpu_to_le32(vcmd.cdw13); |
|
c.common.cdw14 = cpu_to_le32(vcmd.cdw14); |
|
c.common.cdw15 = cpu_to_le32(vcmd.cdw15); |
|
|
|
if (vcmd.timeout_ms) |
|
timeout = msecs_to_jiffies(vcmd.timeout_ms); |
|
|
|
q = admin ? ns->ctrl->admin_q : ns->queue; |
|
|
|
ret = nvme_nvm_submit_user_cmd(q, ns, |
|
(struct nvme_nvm_command *)&c, |
|
(void __user *)(uintptr_t)vcmd.addr, vcmd.data_len, |
|
(void __user *)(uintptr_t)vcmd.metadata, |
|
vcmd.metadata_len, |
|
(void __user *)(uintptr_t)vcmd.ppa_list, vcmd.nppas, |
|
&vcmd.result, &vcmd.status, timeout); |
|
|
|
if (ret && copy_to_user(uvcmd, &vcmd, sizeof(vcmd))) |
|
return -EFAULT; |
|
|
|
return ret; |
|
} |
|
|
|
int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg) |
|
{ |
|
switch (cmd) { |
|
case NVME_NVM_IOCTL_ADMIN_VIO: |
|
return nvme_nvm_user_vcmd(ns, 1, (void __user *)arg); |
|
case NVME_NVM_IOCTL_IO_VIO: |
|
return nvme_nvm_user_vcmd(ns, 0, (void __user *)arg); |
|
case NVME_NVM_IOCTL_SUBMIT_VIO: |
|
return nvme_nvm_submit_vio(ns, (void __user *)arg); |
|
default: |
|
return -ENOTTY; |
|
} |
|
} |
|
|
|
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node) |
|
{ |
|
struct request_queue *q = ns->queue; |
|
struct nvm_dev *dev; |
|
struct nvm_geo *geo; |
|
|
|
_nvme_nvm_check_size(); |
|
|
|
dev = nvm_alloc_dev(node); |
|
if (!dev) |
|
return -ENOMEM; |
|
|
|
/* Note that csecs and sos will be overridden if it is a 1.2 drive. */ |
|
geo = &dev->geo; |
|
geo->csecs = 1 << ns->lba_shift; |
|
geo->sos = ns->ms; |
|
if (ns->features & NVME_NS_EXT_LBAS) |
|
geo->ext = true; |
|
else |
|
geo->ext = false; |
|
geo->mdts = ns->ctrl->max_hw_sectors; |
|
|
|
dev->q = q; |
|
memcpy(dev->name, disk_name, DISK_NAME_LEN); |
|
dev->ops = &nvme_nvm_dev_ops; |
|
dev->private_data = ns; |
|
ns->ndev = dev; |
|
|
|
return nvm_register(dev); |
|
} |
|
|
|
void nvme_nvm_unregister(struct nvme_ns *ns) |
|
{ |
|
nvm_unregister(ns->ndev); |
|
} |
|
|
|
static ssize_t nvm_dev_attr_show(struct device *dev, |
|
struct device_attribute *dattr, char *page) |
|
{ |
|
struct nvme_ns *ns = nvme_get_ns_from_dev(dev); |
|
struct nvm_dev *ndev = ns->ndev; |
|
struct nvm_geo *geo = &ndev->geo; |
|
struct attribute *attr; |
|
|
|
if (!ndev) |
|
return 0; |
|
|
|
attr = &dattr->attr; |
|
|
|
if (strcmp(attr->name, "version") == 0) { |
|
if (geo->major_ver_id == 1) |
|
return scnprintf(page, PAGE_SIZE, "%u\n", |
|
geo->major_ver_id); |
|
else |
|
return scnprintf(page, PAGE_SIZE, "%u.%u\n", |
|
geo->major_ver_id, |
|
geo->minor_ver_id); |
|
} else if (strcmp(attr->name, "capabilities") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap); |
|
} else if (strcmp(attr->name, "read_typ") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt); |
|
} else if (strcmp(attr->name, "read_max") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm); |
|
} else { |
|
return scnprintf(page, |
|
PAGE_SIZE, |
|
"Unhandled attr(%s) in `%s`\n", |
|
attr->name, __func__); |
|
} |
|
} |
|
|
|
static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page) |
|
{ |
|
return scnprintf(page, PAGE_SIZE, |
|
"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
|
ppaf->ch_offset, ppaf->ch_len, |
|
ppaf->lun_offset, ppaf->lun_len, |
|
ppaf->pln_offset, ppaf->pln_len, |
|
ppaf->blk_offset, ppaf->blk_len, |
|
ppaf->pg_offset, ppaf->pg_len, |
|
ppaf->sec_offset, ppaf->sec_len); |
|
} |
|
|
|
static ssize_t nvm_dev_attr_show_12(struct device *dev, |
|
struct device_attribute *dattr, char *page) |
|
{ |
|
struct nvme_ns *ns = nvme_get_ns_from_dev(dev); |
|
struct nvm_dev *ndev = ns->ndev; |
|
struct nvm_geo *geo = &ndev->geo; |
|
struct attribute *attr; |
|
|
|
if (!ndev) |
|
return 0; |
|
|
|
attr = &dattr->attr; |
|
|
|
if (strcmp(attr->name, "vendor_opcode") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt); |
|
} else if (strcmp(attr->name, "device_mode") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom); |
|
/* kept for compatibility */ |
|
} else if (strcmp(attr->name, "media_manager") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm"); |
|
} else if (strcmp(attr->name, "ppa_format") == 0) { |
|
return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page); |
|
} else if (strcmp(attr->name, "media_type") == 0) { /* u8 */ |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype); |
|
} else if (strcmp(attr->name, "flash_media_type") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype); |
|
} else if (strcmp(attr->name, "num_channels") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch); |
|
} else if (strcmp(attr->name, "num_luns") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun); |
|
} else if (strcmp(attr->name, "num_planes") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln); |
|
} else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */ |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk); |
|
} else if (strcmp(attr->name, "num_pages") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg); |
|
} else if (strcmp(attr->name, "page_size") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz); |
|
} else if (strcmp(attr->name, "hw_sector_size") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs); |
|
} else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */ |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos); |
|
} else if (strcmp(attr->name, "prog_typ") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt); |
|
} else if (strcmp(attr->name, "prog_max") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm); |
|
} else if (strcmp(attr->name, "erase_typ") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet); |
|
} else if (strcmp(attr->name, "erase_max") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem); |
|
} else if (strcmp(attr->name, "multiplane_modes") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos); |
|
} else if (strcmp(attr->name, "media_capabilities") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap); |
|
} else if (strcmp(attr->name, "max_phys_secs") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA); |
|
} else { |
|
return scnprintf(page, PAGE_SIZE, |
|
"Unhandled attr(%s) in `%s`\n", |
|
attr->name, __func__); |
|
} |
|
} |
|
|
|
static ssize_t nvm_dev_attr_show_20(struct device *dev, |
|
struct device_attribute *dattr, char *page) |
|
{ |
|
struct nvme_ns *ns = nvme_get_ns_from_dev(dev); |
|
struct nvm_dev *ndev = ns->ndev; |
|
struct nvm_geo *geo = &ndev->geo; |
|
struct attribute *attr; |
|
|
|
if (!ndev) |
|
return 0; |
|
|
|
attr = &dattr->attr; |
|
|
|
if (strcmp(attr->name, "groups") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch); |
|
} else if (strcmp(attr->name, "punits") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun); |
|
} else if (strcmp(attr->name, "chunks") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk); |
|
} else if (strcmp(attr->name, "clba") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba); |
|
} else if (strcmp(attr->name, "ws_min") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min); |
|
} else if (strcmp(attr->name, "ws_opt") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt); |
|
} else if (strcmp(attr->name, "maxoc") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxoc); |
|
} else if (strcmp(attr->name, "maxocpu") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxocpu); |
|
} else if (strcmp(attr->name, "mw_cunits") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits); |
|
} else if (strcmp(attr->name, "write_typ") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt); |
|
} else if (strcmp(attr->name, "write_max") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm); |
|
} else if (strcmp(attr->name, "reset_typ") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet); |
|
} else if (strcmp(attr->name, "reset_max") == 0) { |
|
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem); |
|
} else { |
|
return scnprintf(page, PAGE_SIZE, |
|
"Unhandled attr(%s) in `%s`\n", |
|
attr->name, __func__); |
|
} |
|
} |
|
|
|
#define NVM_DEV_ATTR_RO(_name) \ |
|
DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show, NULL) |
|
#define NVM_DEV_ATTR_12_RO(_name) \ |
|
DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_12, NULL) |
|
#define NVM_DEV_ATTR_20_RO(_name) \ |
|
DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_20, NULL) |
|
|
|
/* general attributes */ |
|
static NVM_DEV_ATTR_RO(version); |
|
static NVM_DEV_ATTR_RO(capabilities); |
|
|
|
static NVM_DEV_ATTR_RO(read_typ); |
|
static NVM_DEV_ATTR_RO(read_max); |
|
|
|
/* 1.2 values */ |
|
static NVM_DEV_ATTR_12_RO(vendor_opcode); |
|
static NVM_DEV_ATTR_12_RO(device_mode); |
|
static NVM_DEV_ATTR_12_RO(ppa_format); |
|
static NVM_DEV_ATTR_12_RO(media_manager); |
|
static NVM_DEV_ATTR_12_RO(media_type); |
|
static NVM_DEV_ATTR_12_RO(flash_media_type); |
|
static NVM_DEV_ATTR_12_RO(num_channels); |
|
static NVM_DEV_ATTR_12_RO(num_luns); |
|
static NVM_DEV_ATTR_12_RO(num_planes); |
|
static NVM_DEV_ATTR_12_RO(num_blocks); |
|
static NVM_DEV_ATTR_12_RO(num_pages); |
|
static NVM_DEV_ATTR_12_RO(page_size); |
|
static NVM_DEV_ATTR_12_RO(hw_sector_size); |
|
static NVM_DEV_ATTR_12_RO(oob_sector_size); |
|
static NVM_DEV_ATTR_12_RO(prog_typ); |
|
static NVM_DEV_ATTR_12_RO(prog_max); |
|
static NVM_DEV_ATTR_12_RO(erase_typ); |
|
static NVM_DEV_ATTR_12_RO(erase_max); |
|
static NVM_DEV_ATTR_12_RO(multiplane_modes); |
|
static NVM_DEV_ATTR_12_RO(media_capabilities); |
|
static NVM_DEV_ATTR_12_RO(max_phys_secs); |
|
|
|
/* 2.0 values */ |
|
static NVM_DEV_ATTR_20_RO(groups); |
|
static NVM_DEV_ATTR_20_RO(punits); |
|
static NVM_DEV_ATTR_20_RO(chunks); |
|
static NVM_DEV_ATTR_20_RO(clba); |
|
static NVM_DEV_ATTR_20_RO(ws_min); |
|
static NVM_DEV_ATTR_20_RO(ws_opt); |
|
static NVM_DEV_ATTR_20_RO(maxoc); |
|
static NVM_DEV_ATTR_20_RO(maxocpu); |
|
static NVM_DEV_ATTR_20_RO(mw_cunits); |
|
static NVM_DEV_ATTR_20_RO(write_typ); |
|
static NVM_DEV_ATTR_20_RO(write_max); |
|
static NVM_DEV_ATTR_20_RO(reset_typ); |
|
static NVM_DEV_ATTR_20_RO(reset_max); |
|
|
|
static struct attribute *nvm_dev_attrs[] = { |
|
/* version agnostic attrs */ |
|
&dev_attr_version.attr, |
|
&dev_attr_capabilities.attr, |
|
&dev_attr_read_typ.attr, |
|
&dev_attr_read_max.attr, |
|
|
|
/* 1.2 attrs */ |
|
&dev_attr_vendor_opcode.attr, |
|
&dev_attr_device_mode.attr, |
|
&dev_attr_media_manager.attr, |
|
&dev_attr_ppa_format.attr, |
|
&dev_attr_media_type.attr, |
|
&dev_attr_flash_media_type.attr, |
|
&dev_attr_num_channels.attr, |
|
&dev_attr_num_luns.attr, |
|
&dev_attr_num_planes.attr, |
|
&dev_attr_num_blocks.attr, |
|
&dev_attr_num_pages.attr, |
|
&dev_attr_page_size.attr, |
|
&dev_attr_hw_sector_size.attr, |
|
&dev_attr_oob_sector_size.attr, |
|
&dev_attr_prog_typ.attr, |
|
&dev_attr_prog_max.attr, |
|
&dev_attr_erase_typ.attr, |
|
&dev_attr_erase_max.attr, |
|
&dev_attr_multiplane_modes.attr, |
|
&dev_attr_media_capabilities.attr, |
|
&dev_attr_max_phys_secs.attr, |
|
|
|
/* 2.0 attrs */ |
|
&dev_attr_groups.attr, |
|
&dev_attr_punits.attr, |
|
&dev_attr_chunks.attr, |
|
&dev_attr_clba.attr, |
|
&dev_attr_ws_min.attr, |
|
&dev_attr_ws_opt.attr, |
|
&dev_attr_maxoc.attr, |
|
&dev_attr_maxocpu.attr, |
|
&dev_attr_mw_cunits.attr, |
|
|
|
&dev_attr_write_typ.attr, |
|
&dev_attr_write_max.attr, |
|
&dev_attr_reset_typ.attr, |
|
&dev_attr_reset_max.attr, |
|
|
|
NULL, |
|
}; |
|
|
|
static umode_t nvm_dev_attrs_visible(struct kobject *kobj, |
|
struct attribute *attr, int index) |
|
{ |
|
struct device *dev = container_of(kobj, struct device, kobj); |
|
struct gendisk *disk = dev_to_disk(dev); |
|
struct nvme_ns *ns = disk->private_data; |
|
struct nvm_dev *ndev = ns->ndev; |
|
struct device_attribute *dev_attr = |
|
container_of(attr, typeof(*dev_attr), attr); |
|
|
|
if (!ndev) |
|
return 0; |
|
|
|
if (dev_attr->show == nvm_dev_attr_show) |
|
return attr->mode; |
|
|
|
switch (ndev->geo.major_ver_id) { |
|
case 1: |
|
if (dev_attr->show == nvm_dev_attr_show_12) |
|
return attr->mode; |
|
break; |
|
case 2: |
|
if (dev_attr->show == nvm_dev_attr_show_20) |
|
return attr->mode; |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
const struct attribute_group nvme_nvm_attr_group = { |
|
.name = "lightnvm", |
|
.attrs = nvm_dev_attrs, |
|
.is_visible = nvm_dev_attrs_visible, |
|
};
|
|
|