drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h

   1 /* Broadcom NetXtreme-C/E network driver.
   2  *
   3  * Copyright (c) 2016-2018 Broadcom Limited
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  */
   9
  10 #ifndef BNXT_ULP_H
  11 #define BNXT_ULP_H
  12
  13 #define BNXT_ROCE_ULP   0
  14 #define BNXT_MAX_ULP    1
  15
  16 #define BNXT_MIN_ROCE_CP_RINGS  2
  17 #define BNXT_MIN_ROCE_STAT_CTXS 1
  18
  19 #define BNXT_MAX_ROCE_MSIX_VF           2
  20 #define BNXT_MAX_ROCE_MSIX_NPAR_PF      5
  21 #define BNXT_MAX_ROCE_MSIX              64
  22
  23 struct hwrm_async_event_cmpl;
  24 struct bnxt;
  25
  26 struct bnxt_msix_entry {
  27         u32     vector;
  28         u32     ring_idx;
  29         u32     db_offset;
  30 };
  31
  32 struct bnxt_ulp_ops {
  33         void (*ulp_irq_stop)(void *);
  34         void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
  35 };
  36
  37 struct bnxt_fw_msg {
  38         void    *msg;
  39         int     msg_len;
  40         void    *resp;
  41         int     resp_max_len;
  42         int     timeout;
  43 };
  44
  45 struct bnxt_ulp {
  46         void            *handle;
  47         struct bnxt_ulp_ops __rcu *ulp_ops;
  48         unsigned long   *async_events_bmap;
  49         u16             max_async_event_id;
  50         u16             msix_requested;
  51         atomic_t        ref_count;
  52 };
  53
  54 struct bnxt_en_dev {
  55         struct net_device *net;
  56         struct pci_dev *pdev;
  57         struct bnxt_msix_entry                  msix_entries[BNXT_MAX_ROCE_MSIX];
  58         u32 flags;
  59         #define BNXT_EN_FLAG_ROCEV1_CAP         0x1
  60         #define BNXT_EN_FLAG_ROCEV2_CAP         0x2
  61         #define BNXT_EN_FLAG_ROCE_CAP           (BNXT_EN_FLAG_ROCEV1_CAP | \
  62                                                  BNXT_EN_FLAG_ROCEV2_CAP)
  63         #define BNXT_EN_FLAG_MSIX_REQUESTED     0x4
  64         #define BNXT_EN_FLAG_ULP_STOPPED        0x8
  65         #define BNXT_EN_FLAG_VF                 0x10
  66 #define BNXT_EN_VF(edev)        ((edev)->flags & BNXT_EN_FLAG_VF)
  67         #define BNXT_EN_FLAG_ROCE_VF_RES_MGMT   0x20
  68
  69         struct bnxt_ulp                 *ulp_tbl;
  70         int                             l2_db_size;     /* Doorbell BAR size in
  71                                                          * bytes mapped by L2
  72                                                          * driver.
  73                                                          */
  74         int                             l2_db_size_nc;  /* Doorbell BAR size in
  75                                                          * bytes mapped as non-
  76                                                          * cacheable.
  77                                                          */
  78         int                             l2_db_offset;   /* Doorbell offset in
  79                                                          * bytes within
  80                                                          * l2_db_size_nc.
  81                                                          */
  82         u16                             chip_num;
  83         u16                             hw_ring_stats_size;
  84         u16                             pf_port_id;
  85         unsigned long                   en_state;       /* Could be checked in
  86                                                          * RoCE driver suspend
  87                                                          * mode only. Will be
  88                                                          * updated in resume.
  89                                                          */
  90         void __iomem                    *bar0;
  91
  92         u16                             ulp_num_msix_vec;
  93         u16                             ulp_num_ctxs;
  94
  95                                         /* serialize ulp operations */
  96         struct mutex                    en_dev_lock;
  97 };
  98
  99 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev)
 100 {
 101         if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops))
 102                 return true;
 103         return false;
 104 }
 105
 106 int bnxt_get_ulp_msix_num(struct bnxt *bp);
 107 int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp);
 108 void bnxt_set_ulp_msix_num(struct bnxt *bp, int num);
 109 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
 110 void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs);
 111 int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp);
 112 void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp);
 113 void bnxt_ulp_stop(struct bnxt *bp);
 114 void bnxt_ulp_start(struct bnxt *bp, int err);
 115 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
 116 void bnxt_ulp_irq_stop(struct bnxt *bp);
 117 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
 118 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
 119 void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
 120 void bnxt_rdma_aux_device_del(struct bnxt *bp);
 121 void bnxt_rdma_aux_device_add(struct bnxt *bp);
 122 void bnxt_rdma_aux_device_init(struct bnxt *bp);
 123 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
 124                       void *handle);
 125 void bnxt_unregister_dev(struct bnxt_en_dev *edev);
 126 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
 127 int bnxt_register_async_events(struct bnxt_en_dev *edev,
 128                                unsigned long *events_bmap, u16 max_id);
 129 #endif