/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 * Copyright (c) 2019-2020 Marvell International Ltd.
 */

#ifndef _QED_CXT_H
#define _QED_CXT_H

#include <linux/types.h>
#include <linux/slab.h>
#include <linux/qed/qed_if.h>
#include "qed_hsi.h"
#include "qed.h"

struct qed_cxt_info {
        void                    *p_cxt;
        u32                     iid;
        enum protocol_type      type;
};

#define MAX_TID_BLOCKS                  512
struct qed_tid_mem {
        u32 tid_size;
        u32 num_tids_per_block;
        u32 waste;
        u8 *blocks[MAX_TID_BLOCKS];     /* 4K */
};

/**
 * qed_cxt_get_cid_info(): Returns the context info for a specific cidi.
 *
 * @p_hwfn: HW device data.
 * @p_info: In/out.
 *
 * Return: Int.
 */
int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn,
                         struct qed_cxt_info *p_info);

/**
 * qed_cxt_get_tid_mem_info(): Returns the tid mem info.
 *
 * @p_hwfn: HW device data.
 * @p_info: in/out.
 *
 * Return: int.
 */
int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
                             struct qed_tid_mem *p_info);

#define QED_CXT_TCP_ULP_TID_SEG PROTOCOLID_TCP_ULP
#define QED_CXT_ROCE_TID_SEG    PROTOCOLID_ROCE
#define QED_CXT_FCOE_TID_SEG    PROTOCOLID_FCOE
enum qed_cxt_elem_type {
        QED_ELEM_CXT,
        QED_ELEM_SRQ,
        QED_ELEM_TASK,
        QED_ELEM_XRC_SRQ,
};

u32 qed_cxt_get_proto_cid_count(struct qed_hwfn *p_hwfn,
                                enum protocol_type type, u32 *vf_cid);

/**
 * qed_cxt_set_pf_params(): Set the PF params for cxt init.
 *
 * @p_hwfn: HW device data.
 * @rdma_tasks: Requested maximum.
 *
 * Return: int.
 */
int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn, u32 rdma_tasks);

/**
 * qed_cxt_cfg_ilt_compute(): Compute ILT init parameters.
 *
 * @p_hwfn: HW device data.
 * @last_line: Last_line.
 *
 * Return: Int
 */
int qed_cxt_cfg_ilt_compute(struct qed_hwfn *p_hwfn, u32 *last_line);

/**
 * qed_cxt_cfg_ilt_compute_excess(): How many lines can be decreased.
 *
 * @p_hwfn: HW device data.
 * @used_lines: Used lines.
 *
 * Return: Int.
 */
u32 qed_cxt_cfg_ilt_compute_excess(struct qed_hwfn *p_hwfn, u32 used_lines);

/**
 * qed_cxt_mngr_alloc(): Allocate and init the context manager struct.
 *
 * @p_hwfn: HW device data.
 *
 * Return: Int.
 */
int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);

/**
 * qed_cxt_mngr_free() - Context manager free.
 *
 * @p_hwfn: HW device data.
 *
 * Return: Void.
 */
void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);

/**
 * qed_cxt_tables_alloc(): Allocate ILT shadow, Searcher T2, acquired map.
 *
 * @p_hwfn: HW device data.
 *
 * Return: Int.
 */
int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);

/**
 * qed_cxt_mngr_setup(): Reset the acquired CIDs.
 *
 * @p_hwfn: HW device data.
 */
void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);

/**
 * qed_cxt_hw_init_common(): Initailze ILT and DQ, common phase, per path.
 *
 * @p_hwfn: HW device data.
 *
 * Return: Void.
 */
void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);

/**
 * qed_cxt_hw_init_pf(): Initailze ILT and DQ, PF phase, per path.
 *
 * @p_hwfn: HW device data.
 * @p_ptt: P_ptt.
 *
 * Return: Void.
 */
void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

/**
 * qed_qm_init_pf(): Initailze the QM PF phase, per path.
 *
 * @p_hwfn: HW device data.
 * @p_ptt: P_ptt.
 * @is_pf_loading: Is pf pending.
 *
 * Return: Void.
 */
void qed_qm_init_pf(struct qed_hwfn *p_hwfn,
                    struct qed_ptt *p_ptt, bool is_pf_loading);

/**
 * qed_qm_reconf(): Reconfigures QM pf on the fly.
 *
 * @p_hwfn: HW device data.
 * @p_ptt: P_ptt.
 *
 * Return: Int.
 */
int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

#define QED_CXT_PF_CID (0xff)

/**
 * qed_cxt_release_cid(): Release a cid.
 *
 * @p_hwfn: HW device data.
 * @cid: Cid.
 *
 * Return: Void.
 */
void qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid);

/**
 * _qed_cxt_release_cid(): Release a cid belonging to a vf-queue.
 *
 * @p_hwfn: HW device data.
 * @cid: Cid.
 * @vfid: Engine relative index. QED_CXT_PF_CID if belongs to PF.
 *
 * Return: Void.
 */
void _qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid, u8 vfid);

/**
 * qed_cxt_acquire_cid(): Acquire a new cid of a specific protocol type.
 *
 * @p_hwfn: HW device data.
 * @type: Type.
 * @p_cid: Pointer cid.
 *
 * Return: Int.
 */
int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
                        enum protocol_type type, u32 *p_cid);

/**
 * _qed_cxt_acquire_cid(): Acquire a new cid of a specific protocol type
 *                         for a vf-queue.
 *
 * @p_hwfn: HW device data.
 * @type: Type.
 * @p_cid: Pointer cid.
 * @vfid: Engine relative index. QED_CXT_PF_CID if belongs to PF.
 *
 * Return: Int.
 */
int _qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
                         enum protocol_type type, u32 *p_cid, u8 vfid);

int qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
                              enum qed_cxt_elem_type elem_type, u32 iid);
u32 qed_cxt_get_proto_tid_count(struct qed_hwfn *p_hwfn,
                                enum protocol_type type);
u32 qed_cxt_get_proto_cid_start(struct qed_hwfn *p_hwfn,
                                enum protocol_type type);
int qed_cxt_free_proto_ilt(struct qed_hwfn *p_hwfn, enum protocol_type proto);

#define QED_CTX_WORKING_MEM 0
#define QED_CTX_FL_MEM 1
int qed_cxt_get_task_ctx(struct qed_hwfn *p_hwfn,
                         u32 tid, u8 ctx_type, void **task_ctx);

/* Max number of connection types in HW (DQ/CDU etc.) */
#define MAX_CONN_TYPES          PROTOCOLID_COMMON
#define NUM_TASK_TYPES          2
#define NUM_TASK_PF_SEGMENTS    4
#define NUM_TASK_VF_SEGMENTS    1

/* PF per protocl configuration object */
#define TASK_SEGMENTS   (NUM_TASK_PF_SEGMENTS + NUM_TASK_VF_SEGMENTS)
#define TASK_SEGMENT_VF (NUM_TASK_PF_SEGMENTS)

struct qed_tid_seg {
        u32 count;
        u8 type;
        bool has_fl_mem;
};

struct qed_conn_type_cfg {
        u32 cid_count;
        u32 cids_per_vf;
        struct qed_tid_seg tid_seg[TASK_SEGMENTS];
};

/* ILT Client configuration,
 * Per connection type (protocol) resources (cids, tis, vf cids etc.)
 * 1 - for connection context (CDUC) and for each task context we need two
 * values, for regular task context and for force load memory
 */
#define ILT_CLI_PF_BLOCKS       (1 + NUM_TASK_PF_SEGMENTS * 2)
#define ILT_CLI_VF_BLOCKS       (1 + NUM_TASK_VF_SEGMENTS * 2)
#define CDUC_BLK                (0)
#define SRQ_BLK                 (0)
#define CDUT_SEG_BLK(n)         (1 + (u8)(n))
#define CDUT_FL_SEG_BLK(n, X)   (1 + (n) + NUM_TASK_ ## X ## _SEGMENTS)

struct ilt_cfg_pair {
        u32 reg;
        u32 val;
};

struct qed_ilt_cli_blk {
        u32 total_size;         /* 0 means not active */
        u32 real_size_in_page;
        u32 start_line;
        u32 dynamic_line_offset;
        u32 dynamic_line_cnt;
};

struct qed_ilt_client_cfg {
        bool active;

        /* ILT boundaries */
        struct ilt_cfg_pair first;
        struct ilt_cfg_pair last;
        struct ilt_cfg_pair p_size;

        /* ILT client blocks for PF */
        struct qed_ilt_cli_blk pf_blks[ILT_CLI_PF_BLOCKS];
        u32 pf_total_lines;

        /* ILT client blocks for VFs */
        struct qed_ilt_cli_blk vf_blks[ILT_CLI_VF_BLOCKS];
        u32 vf_total_lines;
};

struct qed_cid_acquired_map {
        u32             start_cid;
        u32             max_count;
        unsigned long   *cid_map;
};

struct qed_src_t2 {
        struct phys_mem_desc *dma_mem;
        u32 num_pages;
        u64 first_free;
        u64 last_free;
};

struct qed_cxt_mngr {
        /* Per protocl configuration */
        struct qed_conn_type_cfg        conn_cfg[MAX_CONN_TYPES];

        /* computed ILT structure */
        struct qed_ilt_client_cfg       clients[MAX_ILT_CLIENTS];

        /* Task type sizes */
        u32 task_type_size[NUM_TASK_TYPES];

        /* total number of VFs for this hwfn -
         * ALL VFs are symmetric in terms of HW resources
         */
        u32 vf_count;
        u32 first_vf_in_pf;

        /* Acquired CIDs */
        struct qed_cid_acquired_map     acquired[MAX_CONN_TYPES];

        struct qed_cid_acquired_map
        acquired_vf[MAX_CONN_TYPES][MAX_NUM_VFS];

        /* ILT  shadow table */
        struct phys_mem_desc *ilt_shadow;
        u32 ilt_shadow_size;
        u32 pf_start_line;

        /* Mutex for a dynamic ILT allocation */
        struct mutex mutex;

        /* SRC T2 */
        struct qed_src_t2 src_t2;

        /* total number of SRQ's for this hwfn */
        u32 srq_count;
        u32 xrc_srq_count;

        /* Maximal number of L2 steering filters */
        u32 arfs_count;

        u16 iscsi_task_pages;
        u16 fcoe_task_pages;
        u16 roce_task_pages;
        u16 eth_task_pages;
        u16 task_ctx_size;
        u16 conn_ctx_size;
};

u16 qed_get_cdut_num_pf_init_pages(struct qed_hwfn *p_hwfn);
u16 qed_get_cdut_num_vf_init_pages(struct qed_hwfn *p_hwfn);
u16 qed_get_cdut_num_pf_work_pages(struct qed_hwfn *p_hwfn);
u16 qed_get_cdut_num_vf_work_pages(struct qed_hwfn *p_hwfn);

u32 qed_cxt_get_ilt_page_size(struct qed_hwfn *p_hwfn,
                              enum ilt_clients ilt_client);

u32 qed_cxt_get_total_srq_count(struct qed_hwfn *p_hwfn);

#endif