1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Huawei HiNIC PCI Express Linux driver
  4 * Copyright(c) 2017 Huawei Technologies Co., Ltd
  5 */
  6
  7#ifndef HINIC_HW_IO_H
  8#define HINIC_HW_IO_H
  9
 10#include <linux/types.h>
 11#include <linux/pci.h>
 12#include <linux/semaphore.h>
 13#include <linux/sizes.h>
 14
 15#include "hinic_hw_if.h"
 16#include "hinic_hw_eqs.h"
 17#include "hinic_hw_wq.h"
 18#include "hinic_hw_cmdq.h"
 19#include "hinic_hw_qp.h"
 20
 21#define HINIC_DB_PAGE_SIZE      SZ_4K
 22#define HINIC_DB_SIZE           SZ_4M
 23#define HINIC_HW_WQ_PAGE_SIZE	SZ_4K
 24#define HINIC_DEFAULT_WQ_PAGE_SIZE SZ_256K
 25
 26#define HINIC_DB_MAX_AREAS      (HINIC_DB_SIZE / HINIC_DB_PAGE_SIZE)
 27
 28enum hinic_db_type {
 29	HINIC_DB_CMDQ_TYPE,
 30	HINIC_DB_SQ_TYPE,
 31};
 32
 33enum hinic_io_path {
 34	HINIC_CTRL_PATH,
 35	HINIC_DATA_PATH,
 36};
 37
 38struct hinic_free_db_area {
 39	int             db_idx[HINIC_DB_MAX_AREAS];
 40
 41	int             alloc_pos;
 42	int             return_pos;
 43
 44	int             num_free;
 45
 46	/* Lock for getting db area */
 47	struct semaphore        idx_lock;
 48};
 49
 50struct hinic_nic_cfg {
 51	/* lock for getting nic cfg */
 52	struct mutex		cfg_mutex;
 53	bool			pause_set;
 54	u32			auto_neg;
 55	u32			rx_pause;
 56	u32			tx_pause;
 57};
 58
 59struct hinic_func_to_io {
 60	struct hinic_hwif       *hwif;
 61	struct hinic_hwdev      *hwdev;
 62	u16			global_qpn;
 63	struct hinic_ceqs       ceqs;
 64
 65	struct hinic_wqs        wqs;
 66
 67	struct hinic_wq         *sq_wq;
 68	struct hinic_wq         *rq_wq;
 69
 70	struct hinic_qp         *qps;
 71	u16                     max_qps;
 72
 73	u16			sq_depth;
 74	u16			rq_depth;
 75
 76	void __iomem            **sq_db;
 77	void __iomem            *db_base;
 78
 79	void                    *ci_addr_base;
 80	dma_addr_t              ci_dma_base;
 81
 82	struct hinic_free_db_area       free_db_area;
 83
 84	void __iomem                    *cmdq_db_area[HINIC_MAX_CMDQ_TYPES];
 85
 86	struct hinic_cmdqs              cmdqs;
 87
 88	u16			max_vfs;
 89	struct vf_data_storage	*vf_infos;
 90	u8			link_status;
 91	struct hinic_nic_cfg	nic_cfg;
 92};
 93
 94struct hinic_wq_page_size {
 95	u8	status;
 96	u8	version;
 97	u8	rsvd0[6];
 98
 99	u16	func_idx;
100	u8	ppf_idx;
101	u8	page_size;
102
103	u32	rsvd1;
104};
105
106int hinic_set_wq_page_size(struct hinic_hwdev *hwdev, u16 func_idx,
107			   u32 page_size);
108
109int hinic_io_create_qps(struct hinic_func_to_io *func_to_io,
110			u16 base_qpn, int num_qps,
111			struct msix_entry *sq_msix_entries,
112			struct msix_entry *rq_msix_entries);
113
114void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io,
115			  int num_qps);
116
117int hinic_io_init(struct hinic_func_to_io *func_to_io,
118		  struct hinic_hwif *hwif, u16 max_qps, int num_ceqs,
119		  struct msix_entry *ceq_msix_entries);
120
121void hinic_io_free(struct hinic_func_to_io *func_to_io);
122
123#endif