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pds_vdpa: new adminq entries
Add new adminq definitions in support for vDPA operations. Signed-off-by: Shannon Nelson <shannon.nelson@amd.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20230519215632.12343-6-shannon.nelson@amd.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Shannon Nelson
Michael S. Tsirkin
parent
a8492cd8cd
commit
e0c6de13ff
@ -605,6 +605,219 @@ struct pds_core_q_init_comp {
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u8 color;
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};
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/*
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* enum pds_vdpa_cmd_opcode - vDPA Device commands
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*/
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enum pds_vdpa_cmd_opcode {
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PDS_VDPA_CMD_INIT = 48,
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PDS_VDPA_CMD_IDENT = 49,
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PDS_VDPA_CMD_RESET = 51,
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PDS_VDPA_CMD_VQ_RESET = 52,
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PDS_VDPA_CMD_VQ_INIT = 53,
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PDS_VDPA_CMD_STATUS_UPDATE = 54,
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PDS_VDPA_CMD_SET_FEATURES = 55,
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PDS_VDPA_CMD_SET_ATTR = 56,
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};
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/**
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* struct pds_vdpa_cmd - generic command
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* @opcode: Opcode
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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*/
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struct pds_vdpa_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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};
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/**
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* struct pds_vdpa_init_cmd - INIT command
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* @opcode: Opcode PDS_VDPA_CMD_INIT
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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*/
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struct pds_vdpa_init_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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};
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/**
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* struct pds_vdpa_ident - vDPA identification data
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* @hw_features: vDPA features supported by device
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* @max_vqs: max queues available (2 queues for a single queuepair)
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* @max_qlen: log(2) of maximum number of descriptors
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* @min_qlen: log(2) of minimum number of descriptors
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*
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* This struct is used in a DMA block that is set up for the PDS_VDPA_CMD_IDENT
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* transaction. Set up the DMA block and send the address in the IDENT cmd
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* data, the DSC will write the ident information, then we can remove the DMA
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* block after reading the answer. If the completion status is 0, then there
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* is valid information, else there was an error and the data should be invalid.
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*/
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struct pds_vdpa_ident {
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__le64 hw_features;
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__le16 max_vqs;
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__le16 max_qlen;
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__le16 min_qlen;
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};
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/**
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* struct pds_vdpa_ident_cmd - IDENT command
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* @opcode: Opcode PDS_VDPA_CMD_IDENT
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* @rsvd: Word boundary padding
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* @vf_id: VF id
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* @len: length of ident info DMA space
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* @ident_pa: address for DMA of ident info (struct pds_vdpa_ident)
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* only used for this transaction, then forgotten by DSC
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*/
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struct pds_vdpa_ident_cmd {
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u8 opcode;
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u8 rsvd;
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__le16 vf_id;
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__le32 len;
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__le64 ident_pa;
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};
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/**
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* struct pds_vdpa_status_cmd - STATUS_UPDATE command
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* @opcode: Opcode PDS_VDPA_CMD_STATUS_UPDATE
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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* @status: new status bits
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*/
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struct pds_vdpa_status_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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u8 status;
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};
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/**
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* enum pds_vdpa_attr - List of VDPA device attributes
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* @PDS_VDPA_ATTR_MAC: MAC address
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* @PDS_VDPA_ATTR_MAX_VQ_PAIRS: Max virtqueue pairs
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*/
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enum pds_vdpa_attr {
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PDS_VDPA_ATTR_MAC = 1,
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PDS_VDPA_ATTR_MAX_VQ_PAIRS = 2,
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};
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/**
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* struct pds_vdpa_setattr_cmd - SET_ATTR command
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* @opcode: Opcode PDS_VDPA_CMD_SET_ATTR
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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* @attr: attribute to be changed (enum pds_vdpa_attr)
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* @pad: Word boundary padding
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* @mac: new mac address to be assigned as vdpa device address
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* @max_vq_pairs: new limit of virtqueue pairs
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*/
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struct pds_vdpa_setattr_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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u8 attr;
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u8 pad[3];
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union {
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u8 mac[6];
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__le16 max_vq_pairs;
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} __packed;
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};
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/**
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* struct pds_vdpa_vq_init_cmd - queue init command
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* @opcode: Opcode PDS_VDPA_CMD_VQ_INIT
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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* @qid: Queue id (bit0 clear = rx, bit0 set = tx, qid=N is ctrlq)
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* @len: log(2) of max descriptor count
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* @desc_addr: DMA address of descriptor area
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* @avail_addr: DMA address of available descriptors (aka driver area)
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* @used_addr: DMA address of used descriptors (aka device area)
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* @intr_index: interrupt index
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* @avail_index: initial device position in available ring
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* @used_index: initial device position in used ring
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*/
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struct pds_vdpa_vq_init_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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__le16 qid;
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__le16 len;
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__le64 desc_addr;
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__le64 avail_addr;
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__le64 used_addr;
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__le16 intr_index;
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__le16 avail_index;
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__le16 used_index;
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};
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/**
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* struct pds_vdpa_vq_init_comp - queue init completion
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* @status: Status of the command (enum pds_core_status_code)
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* @hw_qtype: HW queue type, used in doorbell selection
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* @hw_qindex: HW queue index, used in doorbell selection
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* @rsvd: Word boundary padding
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* @color: Color bit
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*/
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struct pds_vdpa_vq_init_comp {
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u8 status;
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u8 hw_qtype;
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__le16 hw_qindex;
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u8 rsvd[11];
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u8 color;
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};
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/**
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* struct pds_vdpa_vq_reset_cmd - queue reset command
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* @opcode: Opcode PDS_VDPA_CMD_VQ_RESET
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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* @qid: Queue id
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*/
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struct pds_vdpa_vq_reset_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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__le16 qid;
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};
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/**
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* struct pds_vdpa_vq_reset_comp - queue reset completion
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* @status: Status of the command (enum pds_core_status_code)
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* @rsvd0: Word boundary padding
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* @avail_index: current device position in available ring
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* @used_index: current device position in used ring
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* @rsvd: Word boundary padding
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* @color: Color bit
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*/
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struct pds_vdpa_vq_reset_comp {
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u8 status;
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u8 rsvd0;
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__le16 avail_index;
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__le16 used_index;
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u8 rsvd[9];
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u8 color;
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};
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/**
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* struct pds_vdpa_set_features_cmd - set hw features
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* @opcode: Opcode PDS_VDPA_CMD_SET_FEATURES
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* @vdpa_index: Index for vdpa subdevice
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* @vf_id: VF id
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* @rsvd: Word boundary padding
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* @features: Feature bit mask
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*/
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struct pds_vdpa_set_features_cmd {
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u8 opcode;
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u8 vdpa_index;
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__le16 vf_id;
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__le32 rsvd;
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__le64 features;
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};
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union pds_core_adminq_cmd {
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u8 opcode;
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u8 bytes[64];
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@ -621,6 +834,16 @@ union pds_core_adminq_cmd {
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struct pds_core_q_identify_cmd q_ident;
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struct pds_core_q_init_cmd q_init;
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struct pds_vdpa_cmd vdpa;
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struct pds_vdpa_init_cmd vdpa_init;
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struct pds_vdpa_ident_cmd vdpa_ident;
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struct pds_vdpa_status_cmd vdpa_status;
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struct pds_vdpa_setattr_cmd vdpa_setattr;
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struct pds_vdpa_set_features_cmd vdpa_set_features;
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struct pds_vdpa_vq_init_cmd vdpa_vq_init;
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struct pds_vdpa_vq_reset_cmd vdpa_vq_reset;
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};
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union pds_core_adminq_comp {
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@ -642,6 +865,9 @@ union pds_core_adminq_comp {
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struct pds_core_q_identify_comp q_ident;
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struct pds_core_q_init_comp q_init;
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struct pds_vdpa_vq_init_comp vdpa_vq_init;
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struct pds_vdpa_vq_reset_comp vdpa_vq_reset;
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};
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#ifndef __CHECKER__
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