Commit e0c6de13 authored by Shannon Nelson's avatar Shannon Nelson Committed by Michael S. Tsirkin
Browse files

pds_vdpa: new adminq entries 



Add new adminq definitions in support for vDPA operations.

Signed-off-by: default avatarShannon Nelson <shannon.nelson@amd.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
Message-Id: <20230519215632.12343-6-shannon.nelson@amd.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent a8492cd8

include/linux/pds/pds_adminq.h

+226 −0
Original line number Diff line number Diff line
@@ -605,6 +605,219 @@ struct pds_core_q_init_comp { 
	u8     color;

};



/*

 * enum pds_vdpa_cmd_opcode - vDPA Device commands

 */

enum pds_vdpa_cmd_opcode {

	PDS_VDPA_CMD_INIT		= 48,

	PDS_VDPA_CMD_IDENT		= 49,

	PDS_VDPA_CMD_RESET		= 51,

	PDS_VDPA_CMD_VQ_RESET		= 52,

	PDS_VDPA_CMD_VQ_INIT		= 53,

	PDS_VDPA_CMD_STATUS_UPDATE	= 54,

	PDS_VDPA_CMD_SET_FEATURES	= 55,

	PDS_VDPA_CMD_SET_ATTR		= 56,

};



/**

 * struct pds_vdpa_cmd - generic command

 * @opcode:	Opcode

 * @vdpa_index:	Index for vdpa subdevice

 * @vf_id:	VF id

 */

struct pds_vdpa_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

};



/**

 * struct pds_vdpa_init_cmd - INIT command

 * @opcode:	Opcode PDS_VDPA_CMD_INIT

 * @vdpa_index: Index for vdpa subdevice

 * @vf_id:	VF id

 */

struct pds_vdpa_init_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

};



/**

 * struct pds_vdpa_ident - vDPA identification data

 * @hw_features:	vDPA features supported by device

 * @max_vqs:		max queues available (2 queues for a single queuepair)

 * @max_qlen:		log(2) of maximum number of descriptors

 * @min_qlen:		log(2) of minimum number of descriptors

 *

 * This struct is used in a DMA block that is set up for the PDS_VDPA_CMD_IDENT

 * transaction.  Set up the DMA block and send the address in the IDENT cmd

 * data, the DSC will write the ident information, then we can remove the DMA

 * block after reading the answer.  If the completion status is 0, then there

 * is valid information, else there was an error and the data should be invalid.

 */

struct pds_vdpa_ident {

	__le64 hw_features;

	__le16 max_vqs;

	__le16 max_qlen;

	__le16 min_qlen;

};



/**

 * struct pds_vdpa_ident_cmd - IDENT command

 * @opcode:	Opcode PDS_VDPA_CMD_IDENT

 * @rsvd:       Word boundary padding

 * @vf_id:	VF id

 * @len:	length of ident info DMA space

 * @ident_pa:	address for DMA of ident info (struct pds_vdpa_ident)

 *			only used for this transaction, then forgotten by DSC

 */

struct pds_vdpa_ident_cmd {

	u8     opcode;

	u8     rsvd;

	__le16 vf_id;

	__le32 len;

	__le64 ident_pa;

};



/**

 * struct pds_vdpa_status_cmd - STATUS_UPDATE command

 * @opcode:	Opcode PDS_VDPA_CMD_STATUS_UPDATE

 * @vdpa_index: Index for vdpa subdevice

 * @vf_id:	VF id

 * @status:	new status bits

 */

struct pds_vdpa_status_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

	u8     status;

};



/**

 * enum pds_vdpa_attr - List of VDPA device attributes

 * @PDS_VDPA_ATTR_MAC:          MAC address

 * @PDS_VDPA_ATTR_MAX_VQ_PAIRS: Max virtqueue pairs

 */

enum pds_vdpa_attr {

	PDS_VDPA_ATTR_MAC          = 1,

	PDS_VDPA_ATTR_MAX_VQ_PAIRS = 2,

};



/**

 * struct pds_vdpa_setattr_cmd - SET_ATTR command

 * @opcode:		Opcode PDS_VDPA_CMD_SET_ATTR

 * @vdpa_index:		Index for vdpa subdevice

 * @vf_id:		VF id

 * @attr:		attribute to be changed (enum pds_vdpa_attr)

 * @pad:		Word boundary padding

 * @mac:		new mac address to be assigned as vdpa device address

 * @max_vq_pairs:	new limit of virtqueue pairs

 */

struct pds_vdpa_setattr_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

	u8     attr;

	u8     pad[3];

	union {

		u8 mac[6];

		__le16 max_vq_pairs;

	} __packed;

};



/**

 * struct pds_vdpa_vq_init_cmd - queue init command

 * @opcode: Opcode PDS_VDPA_CMD_VQ_INIT

 * @vdpa_index:	Index for vdpa subdevice

 * @vf_id:	VF id

 * @qid:	Queue id (bit0 clear = rx, bit0 set = tx, qid=N is ctrlq)

 * @len:	log(2) of max descriptor count

 * @desc_addr:	DMA address of descriptor area

 * @avail_addr:	DMA address of available descriptors (aka driver area)

 * @used_addr:	DMA address of used descriptors (aka device area)

 * @intr_index:	interrupt index

 * @avail_index:	initial device position in available ring

 * @used_index:	initial device position in used ring

 */

struct pds_vdpa_vq_init_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

	__le16 qid;

	__le16 len;

	__le64 desc_addr;

	__le64 avail_addr;

	__le64 used_addr;

	__le16 intr_index;

	__le16 avail_index;

	__le16 used_index;

};



/**

 * struct pds_vdpa_vq_init_comp - queue init completion

 * @status:	Status of the command (enum pds_core_status_code)

 * @hw_qtype:	HW queue type, used in doorbell selection

 * @hw_qindex:	HW queue index, used in doorbell selection

 * @rsvd:	Word boundary padding

 * @color:	Color bit

 */

struct pds_vdpa_vq_init_comp {

	u8     status;

	u8     hw_qtype;

	__le16 hw_qindex;

	u8     rsvd[11];

	u8     color;

};



/**

 * struct pds_vdpa_vq_reset_cmd - queue reset command

 * @opcode:	Opcode PDS_VDPA_CMD_VQ_RESET

 * @vdpa_index:	Index for vdpa subdevice

 * @vf_id:	VF id

 * @qid:	Queue id

 */

struct pds_vdpa_vq_reset_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

	__le16 qid;

};



/**

 * struct pds_vdpa_vq_reset_comp - queue reset completion

 * @status:	Status of the command (enum pds_core_status_code)

 * @rsvd0:	Word boundary padding

 * @avail_index:	current device position in available ring

 * @used_index:	current device position in used ring

 * @rsvd:	Word boundary padding

 * @color:	Color bit

 */

struct pds_vdpa_vq_reset_comp {

	u8     status;

	u8     rsvd0;

	__le16 avail_index;

	__le16 used_index;

	u8     rsvd[9];

	u8     color;

};



/**

 * struct pds_vdpa_set_features_cmd - set hw features

 * @opcode: Opcode PDS_VDPA_CMD_SET_FEATURES

 * @vdpa_index:	Index for vdpa subdevice

 * @vf_id:	VF id

 * @rsvd:       Word boundary padding

 * @features:	Feature bit mask

 */

struct pds_vdpa_set_features_cmd {

	u8     opcode;

	u8     vdpa_index;

	__le16 vf_id;

	__le32 rsvd;

	__le64 features;

};



union pds_core_adminq_cmd {

	u8     opcode;

	u8     bytes[64];
@@ -621,6 +834,16 @@ union pds_core_adminq_cmd { 


	struct pds_core_q_identify_cmd    q_ident;

	struct pds_core_q_init_cmd        q_init;



	struct pds_vdpa_cmd		  vdpa;

	struct pds_vdpa_init_cmd	  vdpa_init;

	struct pds_vdpa_ident_cmd	  vdpa_ident;

	struct pds_vdpa_status_cmd	  vdpa_status;

	struct pds_vdpa_setattr_cmd	  vdpa_setattr;

	struct pds_vdpa_set_features_cmd  vdpa_set_features;

	struct pds_vdpa_vq_init_cmd	  vdpa_vq_init;

	struct pds_vdpa_vq_reset_cmd	  vdpa_vq_reset;



};



union pds_core_adminq_comp {
@@ -642,6 +865,9 @@ union pds_core_adminq_comp { 


	struct pds_core_q_identify_comp   q_ident;

	struct pds_core_q_init_comp       q_init;



	struct pds_vdpa_vq_init_comp	  vdpa_vq_init;

	struct pds_vdpa_vq_reset_comp	  vdpa_vq_reset;

};



#ifndef __CHECKER__