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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
/* Copyright 2021 Marvell. All rights reserved. */
#ifndef _QED_NVMETCP_IF_H
#define _QED_NVMETCP_IF_H
#include <linux/types.h>
#include <linux/qed/qed_if.h>
#include <linux/qed/storage_common.h>
#include <linux/qed/nvmetcp_common.h>
#define QED_NVMETCP_MAX_IO_SIZE 0x800000
#define QED_NVMETCP_CMN_HDR_SIZE (sizeof(struct nvme_tcp_hdr))
#define QED_NVMETCP_CMD_HDR_SIZE (sizeof(struct nvme_tcp_cmd_pdu))
#define QED_NVMETCP_NON_IO_HDR_SIZE ((QED_NVMETCP_CMN_HDR_SIZE + 16))
typedef int (*nvmetcp_event_cb_t) (void *context,
u8 fw_event_code, void *fw_handle);
struct qed_dev_nvmetcp_info {
struct qed_dev_info common;
u8 port_id; /* Physical port */
u8 num_cqs;
};
#define MAX_TID_BLOCKS_NVMETCP (512)
struct qed_nvmetcp_tid {
u32 size; /* In bytes per task */
u32 num_tids_per_block;
u8 *blocks[MAX_TID_BLOCKS_NVMETCP];
};
struct qed_nvmetcp_id_params {
u8 mac[ETH_ALEN];
u32 ip[4];
u16 port;
};
struct qed_nvmetcp_params_offload {
/* FW initializations */
dma_addr_t sq_pbl_addr;
dma_addr_t nvmetcp_cccid_itid_table_addr;
u16 nvmetcp_cccid_max_range;
u8 default_cq;
/* Networking and TCP stack initializations */
struct qed_nvmetcp_id_params src;
struct qed_nvmetcp_id_params dst;
u32 ka_timeout;
u32 ka_interval;
u32 max_rt_time;
u32 cwnd;
u16 mss;
u16 vlan_id;
bool timestamp_en;
bool delayed_ack_en;
bool tcp_keep_alive_en;
bool ecn_en;
u8 ip_version;
u8 ka_max_probe_cnt;
u8 ttl;
u8 tos_or_tc;
u8 rcv_wnd_scale;
};
struct qed_nvmetcp_params_update {
u32 max_io_size;
u32 max_recv_pdu_length;
u32 max_send_pdu_length;
/* Placeholder: pfv, cpda, hpda */
bool hdr_digest_en;
bool data_digest_en;
};
struct qed_nvmetcp_cb_ops {
struct qed_common_cb_ops common;
};
struct nvmetcp_sge {
struct regpair sge_addr; /* SGE address */
__le32 sge_len; /* SGE length */
__le32 reserved;
};
/* IO path HSI function SGL params */
struct storage_sgl_task_params {
struct nvmetcp_sge *sgl;
struct regpair sgl_phys_addr;
u32 total_buffer_size;
u16 num_sges;
bool small_mid_sge;
};
/* IO path HSI function FW task context params */
struct nvmetcp_task_params {
void *context; /* Output parameter - set/filled by the HSI function */
struct nvmetcp_wqe *sqe;
u32 tx_io_size; /* in bytes (Without DIF, if exists) */
u32 rx_io_size; /* in bytes (Without DIF, if exists) */
u16 conn_icid;
u16 itid;
struct regpair opq; /* qedn_task_ctx address */
u16 host_cccid;
u8 cq_rss_number;
bool send_write_incapsule;
};
/**
* struct qed_nvmetcp_ops - qed NVMeTCP operations.
* @common: common operations pointer
* @ll2: light L2 operations pointer
* @fill_dev_info: fills NVMeTCP specific information
* @param cdev
* @param info
* @return 0 on success, otherwise error value.
* @register_ops: register nvmetcp operations
* @param cdev
* @param ops - specified using qed_nvmetcp_cb_ops
* @param cookie - driver private
* @start: nvmetcp in FW
* @param cdev
* @param tasks - qed will fill information about tasks
* return 0 on success, otherwise error value.
* @stop: nvmetcp in FW
* @param cdev
* return 0 on success, otherwise error value.
* @acquire_conn: acquire a new nvmetcp connection
* @param cdev
* @param handle - qed will fill handle that should be
* used henceforth as identifier of the
* connection.
* @param p_doorbell - qed will fill the address of the
* doorbell.
* @return 0 on sucesss, otherwise error value.
* @release_conn: release a previously acquired nvmetcp connection
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @offload_conn: configures an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @param conn_info - the configuration to use for the
* offload.
* @return 0 on success, otherwise error value.
* @update_conn: updates an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @param conn_info - the configuration to use for the
* offload.
* @return 0 on success, otherwise error value.
* @destroy_conn: stops an offloaded connection
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @clear_sq: clear all task in sq
* @param cdev
* @param handle - the connection handle.
* @return 0 on success, otherwise error value.
* @add_src_tcp_port_filter: Add source tcp port filter
* @param cdev
* @param src_port
* @remove_src_tcp_port_filter: Remove source tcp port filter
* @param cdev
* @param src_port
* @add_dst_tcp_port_filter: Add destination tcp port filter
* @param cdev
* @param dest_port
* @remove_dst_tcp_port_filter: Remove destination tcp port filter
* @param cdev
* @param dest_port
* @clear_all_filters: Clear all filters.
* @param cdev
*/
struct qed_nvmetcp_ops {
const struct qed_common_ops *common;
const struct qed_ll2_ops *ll2;
int (*fill_dev_info)(struct qed_dev *cdev,
struct qed_dev_nvmetcp_info *info);
void (*register_ops)(struct qed_dev *cdev,
struct qed_nvmetcp_cb_ops *ops, void *cookie);
int (*start)(struct qed_dev *cdev,
struct qed_nvmetcp_tid *tasks,
void *event_context, nvmetcp_event_cb_t async_event_cb);
int (*stop)(struct qed_dev *cdev);
int (*acquire_conn)(struct qed_dev *cdev,
u32 *handle,
u32 *fw_cid, void __iomem **p_doorbell);
int (*release_conn)(struct qed_dev *cdev, u32 handle);
int (*offload_conn)(struct qed_dev *cdev,
u32 handle,
struct qed_nvmetcp_params_offload *conn_info);
int (*update_conn)(struct qed_dev *cdev,
u32 handle,
struct qed_nvmetcp_params_update *conn_info);
int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn);
int (*clear_sq)(struct qed_dev *cdev, u32 handle);
int (*add_src_tcp_port_filter)(struct qed_dev *cdev, u16 src_port);
void (*remove_src_tcp_port_filter)(struct qed_dev *cdev, u16 src_port);
int (*add_dst_tcp_port_filter)(struct qed_dev *cdev, u16 dest_port);
void (*remove_dst_tcp_port_filter)(struct qed_dev *cdev, u16 dest_port);
void (*clear_all_filters)(struct qed_dev *cdev);
void (*init_read_io)(struct nvmetcp_task_params *task_params,
struct nvme_tcp_cmd_pdu *cmd_pdu_header,
struct nvme_command *nvme_cmd,
struct storage_sgl_task_params *sgl_task_params);
void (*init_write_io)(struct nvmetcp_task_params *task_params,
struct nvme_tcp_cmd_pdu *cmd_pdu_header,
struct nvme_command *nvme_cmd,
struct storage_sgl_task_params *sgl_task_params);
void (*init_icreq_exchange)(struct nvmetcp_task_params *task_params,
struct nvme_tcp_icreq_pdu *init_conn_req_pdu_hdr,
struct storage_sgl_task_params *tx_sgl_task_params,
struct storage_sgl_task_params *rx_sgl_task_params);
void (*init_task_cleanup)(struct nvmetcp_task_params *task_params);
};
const struct qed_nvmetcp_ops *qed_get_nvmetcp_ops(void);
void qed_put_nvmetcp_ops(void);
#endif
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