/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Huawei HiNIC PCI Express Linux driver
 * Copyright(c) 2017 Huawei Technologies Co., Ltd
 */

#ifndef HINIC_HW_IO_H
#define HINIC_HW_IO_H

#include <linux/types.h>
#include <linux/pci.h>
#include <linux/semaphore.h>
#include <linux/sizes.h>

#include "hinic_hw_if.h"
#include "hinic_hw_eqs.h"
#include "hinic_hw_wq.h"
#include "hinic_hw_cmdq.h"
#include "hinic_hw_qp.h"

#define HINIC_DB_PAGE_SIZE      SZ_4K
#define HINIC_DB_SIZE           SZ_4M
#define HINIC_HW_WQ_PAGE_SIZE   SZ_4K
#define HINIC_DEFAULT_WQ_PAGE_SIZE SZ_256K

#define HINIC_DB_MAX_AREAS      (HINIC_DB_SIZE / HINIC_DB_PAGE_SIZE)

enum hinic_db_type {
        HINIC_DB_CMDQ_TYPE,
        HINIC_DB_SQ_TYPE,
};

enum hinic_io_path {
        HINIC_CTRL_PATH,
        HINIC_DATA_PATH,
};

struct hinic_free_db_area {
        int             db_idx[HINIC_DB_MAX_AREAS];

        int             alloc_pos;
        int             return_pos;

        int             num_free;

        /* Lock for getting db area */
        struct semaphore        idx_lock;
};

struct hinic_nic_cfg {
        /* lock for getting nic cfg */
        struct mutex            cfg_mutex;
        bool                    pause_set;
        u32                     auto_neg;
        u32                     rx_pause;
        u32                     tx_pause;
};

struct hinic_func_to_io {
        struct hinic_hwif       *hwif;
        struct hinic_hwdev      *hwdev;
        u16                     global_qpn;
        struct hinic_ceqs       ceqs;

        struct hinic_wqs        wqs;

        struct hinic_wq         *sq_wq;
        struct hinic_wq         *rq_wq;

        struct hinic_qp         *qps;
        u16                     max_qps;

        u16                     sq_depth;
        u16                     rq_depth;

        void __iomem            **sq_db;
        void __iomem            *db_base;

        void                    *ci_addr_base;
        dma_addr_t              ci_dma_base;

        struct hinic_free_db_area       free_db_area;

        void __iomem                    *cmdq_db_area[HINIC_MAX_CMDQ_TYPES];

        struct hinic_cmdqs              cmdqs;

        u16                     max_vfs;
        struct vf_data_storage  *vf_infos;
        u8                      link_status;
        struct hinic_nic_cfg    nic_cfg;
};

struct hinic_wq_page_size {
        u8      status;
        u8      version;
        u8      rsvd0[6];

        u16     func_idx;
        u8      ppf_idx;
        u8      page_size;

        u32     rsvd1;
};

int hinic_set_wq_page_size(struct hinic_hwdev *hwdev, u16 func_idx,
                           u32 page_size);

int hinic_io_create_qps(struct hinic_func_to_io *func_to_io,
                        u16 base_qpn, int num_qps,
                        struct msix_entry *sq_msix_entries,
                        struct msix_entry *rq_msix_entries);

void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io,
                          int num_qps);

int hinic_io_init(struct hinic_func_to_io *func_to_io,
                  struct hinic_hwif *hwif, u16 max_qps, int num_ceqs,
                  struct msix_entry *ceq_msix_entries);

void hinic_io_free(struct hinic_func_to_io *func_to_io);

#endif