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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved. */

#ifndef _HINIC3_HWIF_H_
#define _HINIC3_HWIF_H_

#include <linux/build_bug.h>
#include <linux/spinlock_types.h>

struct hinic3_hwdev;

enum hinic3_func_type {
	HINIC3_FUNC_TYPE_VF = 1,
};

struct hinic3_db_area {
	unsigned long *db_bitmap_array;
	u32           db_max_areas;
	/* protect doorbell area alloc and free */
	spinlock_t    idx_lock;
};

struct hinic3_func_attr {
	enum hinic3_func_type func_type;
	u16                   func_global_idx;
	u16                   global_vf_id_of_pf;
	u16                   num_irqs;
	u16                   num_sq;
	u8                    port_to_port_idx;
	u8                    pci_intf_idx;
	u8                    ppf_idx;
	u8                    num_aeqs;
	u8                    num_ceqs;
	u8                    msix_flex_en;
};

static_assert(sizeof(struct hinic3_func_attr) == 20);

struct hinic3_hwif {
	u8 __iomem              *cfg_regs_base;
	u64                     db_base_phy;
	u64                     db_dwqe_len;
	u8 __iomem              *db_base;
	struct hinic3_db_area   db_area;
	struct hinic3_func_attr attr;
};

enum hinic3_outbound_ctrl {
	ENABLE_OUTBOUND  = 0x0,
	DISABLE_OUTBOUND = 0x1,
};

enum hinic3_doorbell_ctrl {
	ENABLE_DOORBELL  = 0,
	DISABLE_DOORBELL = 1,
};

enum hinic3_msix_state {
	HINIC3_MSIX_ENABLE,
	HINIC3_MSIX_DISABLE,
};

enum hinic3_msix_auto_mask {
	HINIC3_CLR_MSIX_AUTO_MASK,
	HINIC3_SET_MSIX_AUTO_MASK,
};

u32 hinic3_hwif_read_reg(struct hinic3_hwif *hwif, u32 reg);
void hinic3_hwif_write_reg(struct hinic3_hwif *hwif, u32 reg, u32 val);

void hinic3_toggle_doorbell(struct hinic3_hwif *hwif,
			    enum hinic3_doorbell_ctrl flag);

int hinic3_alloc_db_addr(struct hinic3_hwdev *hwdev, void __iomem **db_base,
			 void __iomem **dwqe_base);
void hinic3_free_db_addr(struct hinic3_hwdev *hwdev, const u8 __iomem *db_base);

int hinic3_init_hwif(struct hinic3_hwdev *hwdev);
void hinic3_free_hwif(struct hinic3_hwdev *hwdev);

void hinic3_set_msix_state(struct hinic3_hwdev *hwdev, u16 msix_idx,
			   enum hinic3_msix_state flag);
void hinic3_msix_intr_clear_resend_bit(struct hinic3_hwdev *hwdev, u16 msix_idx,
				       u8 clear_resend_en);
void hinic3_set_msix_auto_mask_state(struct hinic3_hwdev *hwdev, u16 msix_idx,
				     enum hinic3_msix_auto_mask flag);

u16 hinic3_global_func_id(struct hinic3_hwdev *hwdev);

#endif