@@ -524,7 +524,7 @@ int nvme_get_features(struct nvme_ctrl *dev, unsigned fid, unsigned nsid,
memset(&c, 0, sizeof(c));
c.features.opcode = nvme_admin_get_features;
c.features.nsid = cpu_to_le32(nsid);
- c.features.prp1 = cpu_to_le64(dma_addr);
+ c.features.dptr.prp1 = cpu_to_le64(dma_addr);
c.features.fid = cpu_to_le32(fid);
ret = __nvme_submit_sync_cmd(dev->admin_q, &c, &cqe, NULL, 0, 0,
@@ -543,7 +543,7 @@ int nvme_set_features(struct nvme_ctrl *dev, unsigned fid, unsigned dword11,
memset(&c, 0, sizeof(c));
c.features.opcode = nvme_admin_set_features;
- c.features.prp1 = cpu_to_le64(dma_addr);
+ c.features.dptr.prp1 = cpu_to_le64(dma_addr);
c.features.fid = cpu_to_le32(fid);
c.features.dword11 = cpu_to_le32(dword11);
@@ -520,8 +520,8 @@ static int nvme_map_data(struct nvme_dev *dev, struct request *req,
goto out_unmap;
}
- cmnd->rw.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
- cmnd->rw.prp2 = cpu_to_le64(iod->first_dma);
+ cmnd->rw.dptr.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
+ cmnd->rw.dptr.prp2 = cpu_to_le64(iod->first_dma);
if (blk_integrity_rq(req))
cmnd->rw.metadata = cpu_to_le64(sg_dma_address(&iod->meta_sg));
return BLK_MQ_RQ_QUEUE_OK;
@@ -16,6 +16,78 @@
#define _LINUX_NVME_H
#include <linux/types.h>
+#include <linux/uuid.h>
+
+/* NQN names in commands fields specified one size */
+#define NVMF_NQN_FIELD_LEN 256
+
+/* However the max length of a qualified name is another size */
+#define NVMF_NQN_SIZE 223
+
+#define NVMF_TRSVCID_SIZE 32
+#define NVMF_TRADDR_SIZE 256
+#define NVMF_TSAS_SIZE 256
+
+#define NVME_DISC_SUBSYS_NAME "nqn.2014-08.org.nvmexpress.discovery"
+
+#define NVME_RDMA_IP_PORT 4420
+
+enum nvme_subsys_type {
+ NVME_NQN_DISC = 1, /* Discovery type target subsystem */
+ NVME_NQN_NVME = 2, /* NVME type target subsystem */
+};
+
+/* Address Family codes for Discovery Log Page entry ADRFAM field */
+enum {
+ NVMF_ADDR_FAMILY_PCI = 0, /* PCIe */
+ NVMF_ADDR_FAMILY_IP4 = 1, /* IP4 */
+ NVMF_ADDR_FAMILY_IP6 = 2, /* IP6 */
+ NVMF_ADDR_FAMILY_IB = 3, /* InfiniBand */
+ NVMF_ADDR_FAMILY_FC = 4, /* Fibre Channel */
+};
+
+/* Transport Type codes for Discovery Log Page entry TRTYPE field */
+enum {
+ NVMF_TRTYPE_RDMA = 1, /* RDMA */
+ NVMF_TRTYPE_FC = 2, /* Fibre Channel */
+ NVMF_TRTYPE_LOOP = 254, /* Reserved for host usage */
+ NVMF_TRTYPE_MAX,
+};
+
+/* Transport Requirements codes for Discovery Log Page entry TREQ field */
+enum {
+ NVMF_TREQ_NOT_SPECIFIED = 0, /* Not specified */
+ NVMF_TREQ_REQUIRED = 1, /* Required */
+ NVMF_TREQ_NOT_REQUIRED = 2, /* Not Required */
+};
+
+/* RDMA QP Service Type codes for Discovery Log Page entry TSAS
+ * RDMA_QPTYPE field
+ */
+enum {
+ NVMF_RDMA_QPTYPE_CONNECTED = 0, /* Reliable Connected */
+ NVMF_RDMA_QPTYPE_DATAGRAM = 1, /* Reliable Datagram */
+};
+
+/* RDMA QP Service Type codes for Discovery Log Page entry TSAS
+ * RDMA_QPTYPE field
+ */
+enum {
+ NVMF_RDMA_PRTYPE_NOT_SPECIFIED = 0, /* No Provider Specified */
+ NVMF_RDMA_PRTYPE_IB = 1, /* InfiniBand */
+ NVMF_RDMA_PRTYPE_ROCE = 2, /* InfiniBand RoCE */
+ NVMF_RDMA_PRTYPE_ROCEV2 = 3, /* InfiniBand RoCEV2 */
+ NVMF_RDMA_PRTYPE_IWARP = 4, /* IWARP */
+};
+
+/* RDMA Connection Management Service Type codes for Discovery Log Page
+ * entry TSAS RDMA_CMS field
+ */
+enum {
+ NVMF_RDMA_CMS_RDMA_CM = 0, /* Sockets based enpoint addressing */
+};
+
+#define NVMF_AQ_DEPTH 32
enum {
NVME_REG_CAP = 0x0000, /* Controller Capabilities */
@@ -117,7 +189,8 @@ struct nvme_id_ctrl {
__le32 rtd3r;
__le32 rtd3e;
__le32 oaes;
- __u8 rsvd96[160];
+ __le32 ctratt;
+ __u8 rsvd100[156];
__le16 oacs;
__u8 acl;
__u8 aerl;
@@ -132,7 +205,7 @@ struct nvme_id_ctrl {
__u8 rsvd270[242];
__u8 sqes;
__u8 cqes;
- __u8 rsvd514[2];
+ __le16 maxcmd;
__le32 nn;
__le16 oncs;
__le16 fuses;
@@ -145,7 +218,15 @@ struct nvme_id_ctrl {
__le16 acwu;
__u8 rsvd534[2];
__le32 sgls;
- __u8 rsvd540[1508];
+ __u8 rsvd540[228];
+ char subnqn[256];
+ __u8 rsvd1024[768];
+ __le32 ioccsz;
+ __le32 iorcsz;
+ __le16 icdoff;
+ __u8 ctrattr;
+ __u8 msdbd;
+ __u8 rsvd1804[244];
struct nvme_id_power_state psd[32];
__u8 vs[1024];
};
@@ -307,6 +388,61 @@ enum nvme_opcode {
};
/*
+ * Descriptor subtype - lower 4 bits of nvme_(keyed_)sgl_desc identifier
+ *
+ * @NVME_SGL_FMT_ADDRESS: absolute address of the data block
+ * @NVME_SGL_FMT_OFFSET: relative offset of the in-capsule data block
+ * @NVME_SGL_FMT_INVALIDATE: RDMA transport specific remote invalidation
+ * request subtype
+ */
+enum {
+ NVME_SGL_FMT_ADDRESS = 0x00,
+ NVME_SGL_FMT_OFFSET = 0x01,
+ NVME_SGL_FMT_INVALIDATE = 0x0f,
+};
+
+/*
+ * Descriptor type - upper 4 bits of nvme_(keyed_)sgl_desc identifier
+ *
+ * For struct nvme_sgl_desc:
+ * @NVME_SGL_FMT_DATA_DESC: data block descriptor
+ * @NVME_SGL_FMT_SEG_DESC: sgl segment descriptor
+ * @NVME_SGL_FMT_LAST_SEG_DESC: last sgl segment descriptor
+ *
+ * For struct nvme_keyed_sgl_desc:
+ * @NVME_KEY_SGL_FMT_DATA_DESC: keyed data block descriptor
+ */
+enum {
+ NVME_SGL_FMT_DATA_DESC = 0x00,
+ NVME_SGL_FMT_SEG_DESC = 0x02,
+ NVME_SGL_FMT_LAST_SEG_DESC = 0x03,
+ NVME_KEY_SGL_FMT_DATA_DESC = 0x04,
+};
+
+struct nvme_sgl_desc {
+ __le64 addr;
+ __le32 length;
+ __u8 rsvd[3];
+ __u8 type;
+};
+
+struct nvme_keyed_sgl_desc {
+ __le64 addr;
+ __u8 length[3];
+ __u8 key[4];
+ __u8 type;
+};
+
+union nvme_data_ptr {
+ struct {
+ __le64 prp1;
+ __le64 prp2;
+ };
+ struct nvme_sgl_desc sgl;
+ struct nvme_keyed_sgl_desc ksgl;
+};
+
+/*
* Lowest two bits of our flags field (FUSE field in the spec):
*
* @NVME_CMD_FUSE_FIRST: Fused Operation, first command
@@ -336,8 +472,7 @@ struct nvme_common_command {
__le32 nsid;
__le32 cdw2[2];
__le64 metadata;
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__le32 cdw10[6];
};
@@ -348,8 +483,7 @@ struct nvme_rw_command {
__le32 nsid;
__u64 rsvd2;
__le64 metadata;
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__le64 slba;
__le16 length;
__le16 control;
@@ -389,8 +523,7 @@ struct nvme_dsm_cmd {
__u16 command_id;
__le32 nsid;
__u64 rsvd2[2];
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__le32 nr;
__le32 attributes;
__u32 rsvd12[4];
@@ -454,6 +587,7 @@ enum {
NVME_LOG_ERROR = 0x01,
NVME_LOG_SMART = 0x02,
NVME_LOG_FW_SLOT = 0x03,
+ NVME_LOG_DISC = 0x70,
NVME_LOG_RESERVATION = 0x80,
NVME_FWACT_REPL = (0 << 3),
NVME_FWACT_REPL_ACTV = (1 << 3),
@@ -466,8 +600,7 @@ struct nvme_identify {
__u16 command_id;
__le32 nsid;
__u64 rsvd2[2];
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__le32 cns;
__u32 rsvd11[5];
};
@@ -478,8 +611,7 @@ struct nvme_features {
__u16 command_id;
__le32 nsid;
__u64 rsvd2[2];
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__le32 fid;
__le32 dword11;
__u32 rsvd12[4];
@@ -538,8 +670,7 @@ struct nvme_download_firmware {
__u8 flags;
__u16 command_id;
__u32 rsvd1[5];
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__le32 numd;
__le32 offset;
__u32 rsvd12[4];
@@ -561,8 +692,7 @@ struct nvme_get_log_page_command {
__u16 command_id;
__le32 nsid;
__u64 rsvd2[2];
- __le64 prp1;
- __le64 prp2;
+ union nvme_data_ptr dptr;
__u8 lid;
__u8 rsvd10;
__le16 numdl;
@@ -573,6 +703,126 @@ struct nvme_get_log_page_command {
__u32 rsvd14[2];
};
+/*
+ * Fabrics subcommands.
+ */
+enum nvmf_fabrics_opcode {
+ nvme_fabrics_command = 0x7f,
+};
+
+enum nvmf_capsule_command {
+ nvme_fabrics_type_property_set = 0x00,
+ nvme_fabrics_type_connect = 0x01,
+ nvme_fabrics_type_property_get = 0x04,
+};
+
+struct nvmf_common_command {
+ __u8 opcode;
+ __u8 resv1;
+ __u16 command_id;
+ __u8 fctype;
+ __u8 resv2[35];
+ __u8 ts[24];
+};
+
+/*
+ * The legal cntlid range a NVMe Target will provide.
+ * Note that cntlid of value 0 is considered illegal in the fabrics world.
+ * Devices based on earlier specs did not have the subsystem concept;
+ * therefore, those devices had their cntlid value set to 0 as a result.
+ */
+#define NVME_CNTLID_MIN 1
+#define NVME_CNTLID_MAX 0xffef
+#define NVME_CNTLID_DYNAMIC 0xffff
+
+#define MAX_DISC_LOGS 255
+
+/* Discovery log page entry */
+struct nvmf_disc_rsp_page_entry {
+ __u8 trtype;
+ __u8 adrfam;
+ __u8 nqntype;
+ __u8 treq;
+ __le16 portid;
+ __le16 cntlid;
+ __le16 asqsz;
+ __u8 resv8[22];
+ char trsvcid[NVMF_TRSVCID_SIZE];
+ __u8 resv64[192];
+ char subnqn[NVMF_NQN_FIELD_LEN];
+ char traddr[NVMF_TRADDR_SIZE];
+ union tsas {
+ char common[NVMF_TSAS_SIZE];
+ struct rdma {
+ __u8 qptype;
+ __u8 prtype;
+ __u8 cms;
+ __u8 resv3[5];
+ __u16 pkey;
+ __u8 resv10[246];
+ } rdma;
+ } tsas;
+};
+
+/* Discovery log page header */
+struct nvmf_disc_rsp_page_hdr {
+ __le64 genctr;
+ __le64 numrec;
+ __le16 recfmt;
+ __u8 resv14[1006];
+ struct nvmf_disc_rsp_page_entry entries[0];
+};
+
+struct nvmf_connect_command {
+ __u8 opcode;
+ __u8 resv1;
+ __u16 command_id;
+ __u8 fctype;
+ __u8 resv2[19];
+ union nvme_data_ptr dptr;
+ __le16 recfmt;
+ __le16 qid;
+ __le16 sqsize;
+ __u8 cattr;
+ __u8 resv3;
+ __le32 kato;
+ __u8 resv4[12];
+};
+
+struct nvmf_connect_data {
+ uuid_le hostid;
+ __le16 cntlid;
+ char resv4[238];
+ char subsysnqn[NVMF_NQN_FIELD_LEN];
+ char hostnqn[NVMF_NQN_FIELD_LEN];
+ char resv5[256];
+};
+
+struct nvmf_property_set_command {
+ __u8 opcode;
+ __u8 resv1;
+ __u16 command_id;
+ __u8 fctype;
+ __u8 resv2[35];
+ __u8 attrib;
+ __u8 resv3[3];
+ __le32 offset;
+ __le64 value;
+ __u8 resv4[8];
+};
+
+struct nvmf_property_get_command {
+ __u8 opcode;
+ __u8 resv1;
+ __u16 command_id;
+ __u8 fctype;
+ __u8 resv2[35];
+ __u8 attrib;
+ __u8 resv3[3];
+ __le32 offset;
+ __u8 resv4[16];
+};
+
struct nvme_command {
union {
struct nvme_common_command common;
@@ -587,15 +837,29 @@ struct nvme_command {
struct nvme_dsm_cmd dsm;
struct nvme_abort_cmd abort;
struct nvme_get_log_page_command get_log_page;
+ struct nvmf_common_command fabrics;
+ struct nvmf_connect_command connect;
+ struct nvmf_property_set_command prop_set;
+ struct nvmf_property_get_command prop_get;
};
};
static inline bool nvme_is_write(struct nvme_command *cmd)
{
+ /*
+ * What a mess...
+ *
+ * Why can't we simply have a Fabrics In and Fabrics out command?
+ */
+ if (unlikely(cmd->common.opcode == nvme_fabrics_command))
+ return cmd->fabrics.opcode & 1;
return cmd->common.opcode & 1;
}
enum {
+ /*
+ * Generic Command Status:
+ */
NVME_SC_SUCCESS = 0x0,
NVME_SC_INVALID_OPCODE = 0x1,
NVME_SC_INVALID_FIELD = 0x2,
@@ -614,10 +878,18 @@ enum {
NVME_SC_SGL_INVALID_DATA = 0xf,
NVME_SC_SGL_INVALID_METADATA = 0x10,
NVME_SC_SGL_INVALID_TYPE = 0x11,
+
+ NVME_SC_SGL_INVALID_OFFSET = 0x16,
+ NVME_SC_SGL_INVALID_SUBTYPE = 0x17,
+
NVME_SC_LBA_RANGE = 0x80,
NVME_SC_CAP_EXCEEDED = 0x81,
NVME_SC_NS_NOT_READY = 0x82,
NVME_SC_RESERVATION_CONFLICT = 0x83,
+
+ /*
+ * Command Specific Status:
+ */
NVME_SC_CQ_INVALID = 0x100,
NVME_SC_QID_INVALID = 0x101,
NVME_SC_QUEUE_SIZE = 0x102,
@@ -635,9 +907,29 @@ enum {
NVME_SC_FEATURE_NOT_CHANGEABLE = 0x10e,
NVME_SC_FEATURE_NOT_PER_NS = 0x10f,
NVME_SC_FW_NEEDS_RESET_SUBSYS = 0x110,
+
+ /*
+ * I/O Command Set Specific - NVM commands:
+ */
NVME_SC_BAD_ATTRIBUTES = 0x180,
NVME_SC_INVALID_PI = 0x181,
NVME_SC_READ_ONLY = 0x182,
+
+ /*
+ * I/O Command Set Specific - Fabrics commands:
+ */
+ NVME_SC_CONNECT_FORMAT = 0x180,
+ NVME_SC_CONNECT_CTRL_BUSY = 0x181,
+ NVME_SC_CONNECT_INVALID_PARAM = 0x182,
+ NVME_SC_CONNECT_RESTART_DISC = 0x183,
+ NVME_SC_CONNECT_INVALID_HOST = 0x184,
+
+ NVME_SC_DISCOVERY_RESTART = 0x190,
+ NVME_SC_AUTH_REQUIRED = 0x191,
+
+ /*
+ * Media and Data Integrity Errors:
+ */
NVME_SC_WRITE_FAULT = 0x280,
NVME_SC_READ_ERROR = 0x281,
NVME_SC_GUARD_CHECK = 0x282,
@@ -645,12 +937,19 @@ enum {
NVME_SC_REFTAG_CHECK = 0x284,
NVME_SC_COMPARE_FAILED = 0x285,
NVME_SC_ACCESS_DENIED = 0x286,
+
NVME_SC_DNR = 0x4000,
};
struct nvme_completion {
- __le32 result; /* Used by admin commands to return data */
- __u32 rsvd;
+ /*
+ * Used by Admin and Fabrics commands to return data:
+ */
+ union {
+ __le16 result16;
+ __le32 result;
+ __le64 result64;
+ };
__le16 sq_head; /* how much of this queue may be reclaimed */
__le16 sq_id; /* submission queue that generated this entry */
__u16 command_id; /* of the command which completed */