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types: Support Phy Rx Eye Opening Measurement Log
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This implements support for TP4119a, adding various fields and functions
to enable better handling of the new Physical Receiver Eye Opening
Measurement log page.

Signed-off-by: Brandon Paupore <[email protected]>
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@bpaupore-wdc
bpaupore-wdc committed Sep 20, 2023
1 parent 5081b43 commit b950bb9
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Showing 3 changed files with 200 additions and 0 deletions.
35 changes: 35 additions & 0 deletions src/nvme/ioctl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1928,6 +1928,41 @@ static inline int nvme_get_log_boot_partition(int fd, bool rae,
return nvme_get_log_page(fd, NVME_LOG_PAGE_PDU_SIZE, &args);
}

/**
* nvme_get_log_phy_rx_eom() - Retrieve Physical Interface Receiver Eye Opening Measurement Log
* @fd: File descriptor of nvme device
* @lsp: Log specific, controls action and measurement quality
* @controller: Target controller ID
* @len: The allocated size, minimum
* struct nvme_phy_rx_eom_log
* @log: User address to store the log page
*
* Return: The nvme command status if a response was received (see
* &enum nvme_status_field) or -1 with errno set otherwise
*/
static inline int nvme_get_log_phy_rx_eom(int fd, __u8 lsp, __u16 controller,
__u32 len, struct nvme_phy_rx_eom_log *log)
{
struct nvme_get_log_args args = {
.lpo = 0,
.result = NULL,
.log = log,
.args_size = sizeof(args),
.fd = fd,
.timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
.lid = NVME_LOG_LID_PHY_RX_EOM,
.len = len,
.nsid = NVME_NSID_NONE,
.csi = NVME_CSI_NVM,
.lsi = controller,
.lsp = lsp,
.uuidx = NVME_UUID_NONE,
.rae = false,
.ot = false,
};
return nvme_get_log_page(fd, NVME_LOG_PAGE_PDU_SIZE, &args);
}

/**
* nvme_get_log_discovery() - Retrieve Discovery log page
* @fd: File descriptor of nvme device
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35 changes: 35 additions & 0 deletions src/nvme/mi.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2106,6 +2106,41 @@ static inline int nvme_mi_admin_get_log_boot_partition(nvme_mi_ctrl_t ctrl,
return nvme_mi_admin_get_log(ctrl, &args);
}

/**
* nvme_mi_admin_get_log_phy_rx_eom() - Retrieve Physical Interface Receiver Eye Opening Measurement Log
* @ctrl: Controller to query
* @lsp: Log specific, controls action and measurement quality
* @controller: Target controller ID
* @len: The allocated size, minimum
* struct nvme_phy_rx_eom_log
* @log: User address to store the log page
*
* Return: The nvme command status if a response was received (see
* &enum nvme_status_field) or -1 with errno set otherwise
*/
static inline int nvme_mi_admin_get_log_phy_rx_eom(nvme_mi_ctrl_t ctrl,
__u8 lsp, __u16 controller,
__u32 len,
struct nvme_phy_rx_eom_log *log)
{
struct nvme_get_log_args args = {
.lpo = 0,
.result = NULL,
.log = log,
.args_size = sizeof(args),
.lid = NVME_LOG_LID_PHY_RX_EOM,
.len = len,
.nsid = NVME_NSID_NONE,
.csi = NVME_CSI_NVM,
.lsi = controller,
.lsp = lsp,
.uuidx = NVME_UUID_NONE,
.rae = false,
.ot = false,
};
return nvme_mi_admin_get_log(ctrl, &args);
}

/**
* nvme_mi_admin_get_log_discovery() - Retrieve Discovery log page
* @ctrl: Controller to query
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130 changes: 130 additions & 0 deletions src/nvme/types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3717,6 +3717,110 @@ struct nvme_boot_partition {
__u8 boot_partition_data[];
};

/**
* struct nvme_eom_lane_desc - EOM Lane Descriptor
* @rsvd0: Reserved
* @mstatus: Measurement Status
* @lane: Lane number
* @eye: Eye number
* @top: Absolute number of rows from center to top edge of eye
* @bottom: Absolute number of rows from center to bottom edge of eye
* @left: Absolute number of rows from center to left edge of eye
* @right: Absolute number of rows from center to right edge of eye
* @nrows: Number of Rows
* @ncols: Number of Columns
* @edlen: Eye Data Length
* @rsvd18: Reserved
* @eye: Printable Eye, Eye Data, and any Padding
*/
struct nvme_eom_lane_desc {
__u8 rsvd0;
__u8 mstatus;
__u8 lane;
__u8 eye;
__le16 top;
__le16 bottom;
__le16 left;
__le16 right;
__le16 nrows;
__le16 ncols;
__le16 edlen;
__u8 rsvd18[14];
__u8 eye[];
};

/**
* struct nvme_phy_rx_eom_log - Physical Interface Receiver Eye Opening Measurement Log
* @lid: Log Identifier
* @eomip: EOM In Progress
* @hsize: Header Size
* @rsize: Result Size
* @eomdgn: EOM Data Generation Number
* @lr: Log Revision
* @odp: Optional Data Present
* @lanes: Number of lanes configured for this port
* @epl: Eyes Per Lane
* @lspfc: Log Specific Parameter Field Copy
* @li: Link Information
* @rsvd15: Reserved
* @lsic: Log Specific Identifier Copy
* @dsize: Descriptor Size
* @nd: Number of Descriptors
* @maxtb: Maximum Top Bottom
* @maxlr: Maximum Left Right
* @etgood: Estimated Time for Good Quality
* @etbetter: Estimated Time for Better Quality
* @etbest: Estimated Time for Best Quality
* @rsvd36: Reserved
* @descs: EOM Lane Descriptors
*/
struct nvme_phy_rx_eom_log {
__u8 lid;
__u8 eomip;
__le16 hsize;
__le32 rsize;
__u8 eomdgn;
__u8 lr;
__u8 odp;
__u8 lanes;
__u8 epl;
__u8 lspfc;
__u8 li;
__u8 rsvd15[3];
__le16 lsic;
__le32 dsize;
__le16 nd;
__le16 maxtb;
__le16 maxlr;
__le16 etgood;
__le16 etbetter;
__le16 etbest;
__u8 rsvd36[28];
struct nvme_eom_lane_desc descs[];
};

/**
* enum nvme_eom_optional_data - EOM Optional Data Present Fields
* @NVME_EOM_EYE_DATA_PRESENT: Eye Data Present
* @NVME_EOM_PRINTABLE_EYE_PRESENT: Printable Eye Present
*/
enum nvme_eom_optional_data {
NVME_EOM_EYE_DATA_PRESENT = 1,
NVME_EOM_PRINTABLE_EYE_PRESENT = 1 << 1,
};

/**
* enum nvme_phy_rx_eom_progress - EOM In Progress Values
* @NVME_PHY_RX_EOM_NOT_STARTED: EOM Not Started
* @NVME_PHY_RX_EOM_IN_PROGRESS: EOM In Progress
* @NVME_PHY_RX_EOM_COMPLETED: EOM Completed
*/
enum nvme_phy_rx_eom_progress {
NVME_PHY_RX_EOM_NOT_STARTED = 0,
NVME_PHY_RX_EOM_IN_PROGRESS = 1,
NVME_PHY_RX_EOM_COMPLETED = 2,
};

/**
* struct nvme_media_unit_stat_desc - Media Unit Status Descriptor
* @muid: Media Unit Identifier
Expand Down Expand Up @@ -6696,6 +6800,7 @@ enum nvme_identify_cns {
* @NVME_LOG_LID_FID_SUPPORTED_EFFECTS: Feature Identifiers Supported and Effects
* @NVME_LOG_LID_MI_CMD_SUPPORTED_EFFECTS: NVMe-MI Commands Supported and Effects
* @NVME_LOG_LID_BOOT_PARTITION: Boot Partition
* @NVME_LOG_LID_PHY_RX_EOM: Physical Interface Receiver Eye Opening Measurement
* @NVME_LOG_LID_FDP_CONFIGS: FDP Configurations
* @NVME_LOG_LID_FDP_RUH_USAGE: Reclaim Unit Handle Usage
* @NVME_LOG_LID_FDP_STATS: FDP Statistics
Expand Down Expand Up @@ -6727,6 +6832,7 @@ enum nvme_cmd_get_log_lid {
NVME_LOG_LID_FID_SUPPORTED_EFFECTS = 0x12,
NVME_LOG_LID_MI_CMD_SUPPORTED_EFFECTS = 0x13,
NVME_LOG_LID_BOOT_PARTITION = 0x15,
NVME_LOG_LID_PHY_RX_EOM = 0x19,
NVME_LOG_LID_FDP_CONFIGS = 0x20,
NVME_LOG_LID_FDP_RUH_USAGE = 0x21,
NVME_LOG_LID_FDP_STATS = 0x22,
Expand Down Expand Up @@ -7280,6 +7386,30 @@ enum nvme_log_ana_lsp {
NVME_LOG_ANA_LSP_RGO_GROUPS_ONLY = 1,
};

/**
* enum nvme_log_phy_rx_eom_action - Physical Interface Receiver Eye Opening Measurement Action
* @NVME_LOG_PHY_RX_EOM_READ: Read Log Data
* @NVME_LOG_PHY_RX_EOM_START_READ: Start Measurement and Read Log Data
* @NVME_LOG_PHY_RX_EOM_ABORT_CLEAR: Abort Measurement and Clear Log Data
*/
enum nvme_log_phy_rx_eom_action {
NVME_LOG_PHY_RX_EOM_READ = 0,
NVME_LOG_PHY_RX_EOM_START_READ = 1,
NVME_LOG_PHY_RX_EOM_ABORT_CLEAR = 2,
};

/**
* enum nvme_log_phy_rx_eom_quality - Physical Interface Receiver Eye Opening Measurement Quality
* @NVME_LOG_PHY_RX_EOM_GOOD: <= Better Quality
* @NVME_LOG_PHY_RX_EOM_BETTER: <= Best Quality, >= Good Quality
* @NVME_LOG_PHY_RX_EOM_BEST: >= Better Quality
*/
enum nvme_log_phy_rx_eom_quality {
NVME_LOG_PHY_RX_EOM_GOOD = 0,
NVME_LOG_PHY_RX_EOM_BETTER = 1,
NVME_LOG_PHY_RX_EOM_BEST = 2,
};

/**
* enum nvme_pevent_log_action - Persistent Event Log - Action
* @NVME_PEVENT_LOG_READ: Read Log Data
Expand Down

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