drivers/net/ethernet/huawei/hinic/hinic_hw_io.h

   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
  28 enum hinic_db_type {
  29         HINIC_DB_CMDQ_TYPE,
  30         HINIC_DB_SQ_TYPE,
  31 };
  32
  33 enum hinic_io_path {
  34         HINIC_CTRL_PATH,
  35         HINIC_DATA_PATH,
  36 };
  37
  38 struct 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
  50 struct 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
  59 struct 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
  94 struct 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
 106 int hinic_set_wq_page_size(struct hinic_hwdev *hwdev, u16 func_idx,
 107                            u32 page_size);
 108
 109 int 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
 114 void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io,
 115                           int num_qps);
 116
 117 int 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
 121 void hinic_io_free(struct hinic_func_to_io *func_to_io);
 122
 123 #endif