/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (c) 2014-2015 Hisilicon Limited.
 */

#ifndef _HNS_DSAF_RCB_H
#define _HNS_DSAF_RCB_H

#include <linux/netdevice.h>
#include <linux/platform_device.h>

#include "hnae.h"
#include "hns_dsaf_main.h"

struct rcb_common_cb;

#define HNS_RCB_IRQ_NUM_PER_QUEUE               2
#define HNS_RCB_IRQ_IDX_TX                      0
#define HNS_RCB_IRQ_IDX_RX                      1
#define HNS_RCB_TX_REG_OFFSET                   0x40

#define HNS_RCB_SERVICE_NW_ENGINE_NUM           DSAF_COMM_CHN
#define HNS_RCB_DEBUG_NW_ENGINE_NUM             1
#define HNS_RCB_RING_MAX_BD_PER_PKT             3
#define HNS_RCB_RING_MAX_TXBD_PER_PKT           3
#define HNS_RCBV2_RING_MAX_TXBD_PER_PKT         8
#define HNS_RCB_MAX_PKT_SIZE MAC_MAX_MTU

#define HNS_RCB_RING_MAX_PENDING_BD             1024
#define HNS_RCB_RING_MIN_PENDING_BD             16

#define HNS_RCB_REG_OFFSET                      0x10000

#define HNS_RCB_TX_FRAMES_LOW           1
#define HNS_RCB_RX_FRAMES_LOW           1
#define HNS_RCB_TX_FRAMES_HIGH          1023
#define HNS_RCB_RX_FRAMES_HIGH          1023
#define HNS_RCB_TX_USECS_LOW            1
#define HNS_RCB_RX_USECS_LOW            1
#define HNS_RCB_TX_USECS_HIGH           1023
#define HNS_RCB_RX_USECS_HIGH           1023
#define HNS_RCB_MAX_COALESCED_FRAMES            1023
#define HNS_RCB_MIN_COALESCED_FRAMES            1
#define HNS_RCB_DEF_RX_COALESCED_FRAMES         50
#define HNS_RCB_DEF_TX_COALESCED_FRAMES         1
#define HNS_RCB_CLK_FREQ_MHZ                    350
#define HNS_RCB_MAX_COALESCED_USECS             0x3ff
#define HNS_RCB_DEF_COALESCED_USECS             30
#define HNS_RCB_DEF_GAP_TIME_USECS              20
#define HNS_RCB_TX_PKTLINE_OFFSET               8

#define HNS_RCB_COMMON_ENDIAN                   1

#define HNS_BD_SIZE_512_TYPE                    0
#define HNS_BD_SIZE_1024_TYPE                   1
#define HNS_BD_SIZE_2048_TYPE                   2
#define HNS_BD_SIZE_4096_TYPE                   3

#define HNS_RCB_COMMON_DUMP_REG_NUM 80
#define HNS_RCB_RING_DUMP_REG_NUM 40
#define HNS_RING_STATIC_REG_NUM 28

#define HNS_DUMP_REG_NUM                        500
#define HNS_STATIC_REG_NUM                      12

#define HNS_TSO_MODE_8BD_32K                    1
#define HNS_TSO_MDOE_4BD_16K                    0

enum rcb_int_flag {
        RCB_INT_FLAG_TX = 0x1,
        RCB_INT_FLAG_RX = (0x1 << 1),
        RCB_INT_FLAG_MAX = (0x1 << 2),  /*must be the last element */
};

struct hns_ring_hw_stats {
        u64 tx_pkts;
        u64 ppe_tx_ok_pkts;
        u64 ppe_tx_drop_pkts;
        u64 rx_pkts;
        u64 ppe_rx_ok_pkts;
        u64 ppe_rx_drop_pkts;
};

struct ring_pair_cb {
        struct rcb_common_cb *rcb_common;       /*  ring belongs to */
        struct device *dev;     /*device for DMA mapping */
        struct hnae_queue q;

        u16 index;      /* global index in a rcb common device */
        u16 buf_size;

        int virq[HNS_RCB_IRQ_NUM_PER_QUEUE];

        u8 port_id_in_comm;
        u8 used_by_vf;

        struct hns_ring_hw_stats hw_stats;
};

struct rcb_common_cb {
        u8 __iomem *io_base;
        phys_addr_t phy_base;
        struct dsaf_device *dsaf_dev;
        u16 max_vfn;
        u16 max_q_per_vf;

        u8 comm_index;
        u32 ring_num;
        u32 desc_num; /*  desc num per queue*/

        struct ring_pair_cb ring_pair_cb[] __counted_by(ring_num);
};

int hns_rcb_buf_size2type(u32 buf_size);

int hns_rcb_common_get_cfg(struct dsaf_device *dsaf_dev, int comm_index);
void hns_rcb_common_free_cfg(struct dsaf_device *dsaf_dev, u32 comm_index);
int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common);
int hns_rcb_get_cfg(struct rcb_common_cb *rcb_common);
void hns_rcb_get_queue_mode(enum dsaf_mode dsaf_mode,
                            u16 *max_vfn, u16 *max_q_per_vf);

void hns_rcb_common_init_commit_hw(struct rcb_common_cb *rcb_common);

void hns_rcb_ring_enable_hw(struct hnae_queue *q, u32 val);
void hns_rcb_int_clr_hw(struct hnae_queue *q, u32 flag);
void hns_rcb_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 enable);
void hns_rcbv2_int_ctrl_hw(struct hnae_queue *q, u32 flag, u32 mask);
void hns_rcbv2_int_clr_hw(struct hnae_queue *q, u32 flag);

void hns_rcb_init_hw(struct ring_pair_cb *ring);
void hns_rcb_reset_ring_hw(struct hnae_queue *q);
void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag);
int hns_rcb_wait_tx_ring_clean(struct hnae_queue *qs);
u32 hns_rcb_get_rx_coalesced_frames(
        struct rcb_common_cb *rcb_common, u32 port_idx);
u32 hns_rcb_get_tx_coalesced_frames(
        struct rcb_common_cb *rcb_common, u32 port_idx);
u32 hns_rcb_get_coalesce_usecs(
        struct rcb_common_cb *rcb_common, u32 port_idx);
int hns_rcb_set_coalesce_usecs(
        struct rcb_common_cb *rcb_common, u32 port_idx, u32 timeout);
int hns_rcb_set_rx_coalesced_frames(
        struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames);
int hns_rcb_set_tx_coalesced_frames(
        struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames);
void hns_rcb_update_stats(struct hnae_queue *queue);

void hns_rcb_get_stats(struct hnae_queue *queue, u64 *data);

void hns_rcb_get_common_regs(struct rcb_common_cb *rcb_common, void *data);

int hns_rcb_get_ring_sset_count(int stringset);
int hns_rcb_get_common_regs_count(void);
int hns_rcb_get_ring_regs_count(void);

void hns_rcb_get_ring_regs(struct hnae_queue *queue, void *data);

void hns_rcb_get_strings(int stringset, u8 **data, int index);
void hns_rcb_set_rx_ring_bs(struct hnae_queue *q, u32 buf_size);
void hns_rcb_set_tx_ring_bs(struct hnae_queue *q, u32 buf_size);

#endif /* _HNS_DSAF_RCB_H */