/* QLogic (R)NIC Driver/Library
 * Copyright (c) 2015-2016  QLogic Corporation
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef _QED_CXT_H
#define _QED_CXT_H
#include <linux/types.h>
#include <linux/slab.h>
#include "qed_hsi.h"
#include "qed_if.h"

struct qed_hwfn;

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 */
};

/**
 * @brief qedo_cid_get_cxt_info - Returns the context info for a specific cid
 *
 *
 * @param p_hwfn
 * @param p_info in/out
 *
 * @return int
 */
int qed_cxt_get_cid_info(struct qed_hwfn *p_hwfn, struct qed_cxt_info *p_info);

/**
 * @brief qed_cxt_get_tid_mem_info
 *
 * @param p_hwfn
 * @param p_info
 *
 * @return int
 */
int qed_cxt_get_tid_mem_info(struct qed_hwfn *p_hwfn,
			     struct qed_tid_mem *p_info);

#ifndef _QED_CID_
#define _QED_CID_

/* Tasks segments definitions  */
#define QED_CXT_ISCSI_TID_SEG                   PROTOCOLID_ISCSI	/* 0 */
#define QED_CXT_FCOE_TID_SEG                    PROTOCOLID_FCOE	/* 1 */
#define QED_CXT_ROCE_TID_SEG                    PROTOCOLID_ROCE	/* 2 */

enum qed_cxt_elem_type {
	QED_ELEM_CXT,
	QED_ELEM_SRQ,
	QED_ELEM_TASK,
	QED_ELEM_XRC_SRQ,
};

enum ilt_clients {
	ILT_CLI_CDUC,
	ILT_CLI_CDUT,
	ILT_CLI_QM,
	ILT_CLI_TM,
	ILT_CLI_SRC,
	ILT_CLI_TSDM,
	ILT_CLI_MAX
};

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

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);

u32 qed_cxt_get_srq_count(struct qed_hwfn *p_hwfn);

u32 qed_cxt_get_xrc_srq_count(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_cxt_set_pf_params - Set the PF params for cxt init
 *
 * @param p_hwfn
 *
 * @return int
 */
int qed_cxt_set_pf_params(struct qed_hwfn *p_hwfn, u32 rdma_tasks);

/**
 * @brief qed_cxt_cfg_ilt_compute - compute ILT init parameters
 *
 * @param p_hwfn
 * @param last_line
 *
 * @return int
 */
int qed_cxt_cfg_ilt_compute(struct qed_hwfn *p_hwfn, u32 * last_line);

/**
 * @brief qed_cxt_cfg_ilt_compute_excess - how many lines can be decreased
 *
 * @param p_hwfn
 * @param used_lines
 */
u32 qed_cxt_cfg_ilt_compute_excess(struct qed_hwfn *p_hwfn, u32 used_lines);

/**
 * @brief qed_cxt_mngr_alloc - Allocate and init the context manager struct
 *
 * @param p_hwfn
 *
 * @return int
 */
int qed_cxt_mngr_alloc(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_cxt_mngr_free
 *
 * @param p_hwfn
 */
void qed_cxt_mngr_free(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_cxt_tables_alloc - Allocate ILT shadow, Searcher T2, acquired map
 *
 * @param p_hwfn
 *
 * @return int
 */
int qed_cxt_tables_alloc(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_cxt_mngr_setup - Reset the acquired CIDs
 *
 * @param p_hwfn
 */
void qed_cxt_mngr_setup(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_cxt_hw_init_common - Initailze ILT and DQ, common phase, per path.
 *
 * @param p_hwfn
 */
void qed_cxt_hw_init_common(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_cxt_hw_init_pf - Initailze ILT and DQ, PF phase, per path.
 *
 * @param p_hwfn
 * @param p_ptt
 */
void qed_cxt_hw_init_pf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

/**
 * @brief qed_qm_init_pf - Initailze the QM PF phase, per path
 *
 * @param p_hwfn
 * @param p_ptt
 * @param is_pf_loading
 */
void qed_qm_init_pf(struct qed_hwfn *p_hwfn,
		    struct qed_ptt *p_ptt, bool is_pf_loading);

/**
 * @brief Reconfigures QM pf on the fly
 *
 * @param p_hwfn
 * @param p_ptt
 *
 * @return int
 */
int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

#define QED_CXT_PF_CID (0xff)

/**
 * @brief qed_cxt_release - Release a cid
 *
 * @param p_hwfn
 * @param cid
 */
void qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid);

/**
 * @brief qed_cxt_release - Release a cid belonging to a vf-queue
 *
 * @param p_hwfn
 * @param cid
 * @param vfid - engine relative index. QED_CXT_PF_CID if belongs to PF
 */
void _qed_cxt_release_cid(struct qed_hwfn *p_hwfn, u32 cid, u8 vfid);

/**
 * @brief qed_cxt_acquire - Acquire a new cid of a specific protocol type
 *
 * @param p_hwfn
 * @param type
 * @param p_cid
 *
 * @return int
 */
int qed_cxt_acquire_cid(struct qed_hwfn *p_hwfn,
			enum protocol_type type, u32 * p_cid);

/**
 * @brief _qed_cxt_acquire - Acquire a new cid of a specific protocol type
 *                             for a vf-queue
 *
 * @param p_hwfn
 * @param type
 * @param p_cid
 * @param 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);

/**
 * @brief qed_cxt_get_tid_mem_info - function checks if the
 *        page containing the iid in the ilt is already
 *        allocated, if it is not it allocates the page.
 *
 * @param p_hwfn
 * @param elem_type
 * @param iid
 *
 * @return int
 */
int
qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
			  enum qed_cxt_elem_type elem_type, u32 iid);

/**
 * @brief qed_cxt_free_ilt_range - function frees ilt pages
 *        associated with the protocol and element type passed.
 *
 * @param p_hwfn
 * @param proto
 *
 * @return int
 */
int
qed_cxt_free_ilt_range(struct qed_hwfn *p_hwfn,
		       enum qed_cxt_elem_type elem_type,
		       u32 start_iid, u32 count);

#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);

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 /* _QED_CID_ */
#endif