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authorKeith Busch <keith.busch@wdc.com>2020-06-29 12:06:41 -0700
committerChristoph Hellwig <hch@lst.de>2020-07-08 16:16:20 +0200
commit240e6ee272c07a2636dfc7d65f5bbb18377c49e5 (patch)
treecfce3745e909ccb33e8d0539119540c25e369ee9 /include
parentbe93e87e780253780df9bb6ecc9bc1199b0d94c3 (diff)
nvme: support for zoned namespaces
Add support for NVM Express Zoned Namespaces (ZNS) Command Set defined in NVM Express TP4053. Zoned namespaces are discovered based on their Command Set Identifier reported in the namespaces Namespace Identification Descriptor list. A successfully discovered Zoned Namespace will be registered with the block layer as a host managed zoned block device with Zone Append command support. A namespace that does not support append is not supported by the driver. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Javier González <javier.gonz@samsung.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com> Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com> Signed-off-by: Aravind Ramesh <aravind.ramesh@wdc.com> Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com> Signed-off-by: Matias Bjørling <matias.bjorling@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Keith Busch <keith.busch@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/nvme.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 95cd03e240a1..1643005d21e3 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -374,6 +374,30 @@ struct nvme_id_ns {
__u8 vs[3712];
};
+struct nvme_zns_lbafe {
+ __le64 zsze;
+ __u8 zdes;
+ __u8 rsvd9[7];
+};
+
+struct nvme_id_ns_zns {
+ __le16 zoc;
+ __le16 ozcs;
+ __le32 mar;
+ __le32 mor;
+ __le32 rrl;
+ __le32 frl;
+ __u8 rsvd20[2796];
+ struct nvme_zns_lbafe lbafe[16];
+ __u8 rsvd3072[768];
+ __u8 vs[256];
+};
+
+struct nvme_id_ctrl_zns {
+ __u8 zasl;
+ __u8 rsvd1[4095];
+};
+
enum {
NVME_ID_CNS_NS = 0x00,
NVME_ID_CNS_CTRL = 0x01,
@@ -392,6 +416,7 @@ enum {
enum {
NVME_CSI_NVM = 0,
+ NVME_CSI_ZNS = 2,
};
enum {
@@ -532,6 +557,27 @@ struct nvme_ana_rsp_hdr {
__le16 rsvd10[3];
};
+struct nvme_zone_descriptor {
+ __u8 zt;
+ __u8 zs;
+ __u8 za;
+ __u8 rsvd3[5];
+ __le64 zcap;
+ __le64 zslba;
+ __le64 wp;
+ __u8 rsvd32[32];
+};
+
+enum {
+ NVME_ZONE_TYPE_SEQWRITE_REQ = 0x2,
+};
+
+struct nvme_zone_report {
+ __le64 nr_zones;
+ __u8 resv8[56];
+ struct nvme_zone_descriptor entries[];
+};
+
enum {
NVME_SMART_CRIT_SPARE = 1 << 0,
NVME_SMART_CRIT_TEMPERATURE = 1 << 1,
@@ -626,6 +672,9 @@ enum nvme_opcode {
nvme_cmd_resv_report = 0x0e,
nvme_cmd_resv_acquire = 0x11,
nvme_cmd_resv_release = 0x15,
+ nvme_cmd_zone_mgmt_send = 0x79,
+ nvme_cmd_zone_mgmt_recv = 0x7a,
+ nvme_cmd_zone_append = 0x7d,
};
#define nvme_opcode_name(opcode) { opcode, #opcode }
@@ -764,6 +813,7 @@ struct nvme_rw_command {
enum {
NVME_RW_LR = 1 << 15,
NVME_RW_FUA = 1 << 14,
+ NVME_RW_APPEND_PIREMAP = 1 << 9,
NVME_RW_DSM_FREQ_UNSPEC = 0,
NVME_RW_DSM_FREQ_TYPICAL = 1,
NVME_RW_DSM_FREQ_RARE = 2,
@@ -829,6 +879,53 @@ struct nvme_write_zeroes_cmd {
__le16 appmask;
};
+enum nvme_zone_mgmt_action {
+ NVME_ZONE_CLOSE = 0x1,
+ NVME_ZONE_FINISH = 0x2,
+ NVME_ZONE_OPEN = 0x3,
+ NVME_ZONE_RESET = 0x4,
+ NVME_ZONE_OFFLINE = 0x5,
+ NVME_ZONE_SET_DESC_EXT = 0x10,
+};
+
+struct nvme_zone_mgmt_send_cmd {
+ __u8 opcode;
+ __u8 flags;
+ __u16 command_id;
+ __le32 nsid;
+ __le32 cdw2[2];
+ __le64 metadata;
+ union nvme_data_ptr dptr;
+ __le64 slba;
+ __le32 cdw12;
+ __u8 zsa;
+ __u8 select_all;
+ __u8 rsvd13[2];
+ __le32 cdw14[2];
+};
+
+struct nvme_zone_mgmt_recv_cmd {
+ __u8 opcode;
+ __u8 flags;
+ __u16 command_id;
+ __le32 nsid;
+ __le64 rsvd2[2];
+ union nvme_data_ptr dptr;
+ __le64 slba;
+ __le32 numd;
+ __u8 zra;
+ __u8 zrasf;
+ __u8 pr;
+ __u8 rsvd13;
+ __le32 cdw14[2];
+};
+
+enum {
+ NVME_ZRA_ZONE_REPORT = 0,
+ NVME_ZRASF_ZONE_REPORT_ALL = 0,
+ NVME_REPORT_ZONE_PARTIAL = 1,
+};
+
/* Features */
enum {
@@ -1300,6 +1397,8 @@ struct nvme_command {
struct nvme_format_cmd format;
struct nvme_dsm_cmd dsm;
struct nvme_write_zeroes_cmd write_zeroes;
+ struct nvme_zone_mgmt_send_cmd zms;
+ struct nvme_zone_mgmt_recv_cmd zmr;
struct nvme_abort_cmd abort;
struct nvme_get_log_page_command get_log_page;
struct nvmf_common_command fabrics;
@@ -1434,6 +1533,18 @@ enum {
NVME_SC_AUTH_REQUIRED = 0x191,
/*
+ * I/O Command Set Specific - Zoned commands:
+ */
+ NVME_SC_ZONE_BOUNDARY_ERROR = 0x1b8,
+ NVME_SC_ZONE_FULL = 0x1b9,
+ NVME_SC_ZONE_READ_ONLY = 0x1ba,
+ NVME_SC_ZONE_OFFLINE = 0x1bb,
+ NVME_SC_ZONE_INVALID_WRITE = 0x1bc,
+ NVME_SC_ZONE_TOO_MANY_ACTIVE = 0x1bd,
+ NVME_SC_ZONE_TOO_MANY_OPEN = 0x1be,
+ NVME_SC_ZONE_INVALID_TRANSITION = 0x1bf,
+
+ /*
* Media and Data Integrity Errors:
*/
NVME_SC_WRITE_FAULT = 0x280,