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_OTHER_ULP  1
  15 #define BNXT_MAX_ULP    2
  16
  17 #define BNXT_MIN_ROCE_CP_RINGS  2
  18 #define BNXT_MIN_ROCE_STAT_CTXS 1
  19
  20 struct hwrm_async_event_cmpl;
  21 struct bnxt;
  22
  23 struct bnxt_msix_entry {
  24         u32     vector;
  25         u32     ring_idx;
  26         u32     db_offset;
  27 };
  28
  29 struct bnxt_ulp_ops {
  30         /* async_notifier() cannot sleep (in BH context) */
  31         void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *);
  32         void (*ulp_stop)(void *);
  33         void (*ulp_start)(void *);
  34         void (*ulp_sriov_config)(void *, int);
  35         void (*ulp_shutdown)(void *);
  36         void (*ulp_irq_stop)(void *);
  37         void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
  38 };
  39
  40 struct bnxt_fw_msg {
  41         void    *msg;
  42         int     msg_len;
  43         void    *resp;
  44         int     resp_max_len;
  45         int     timeout;
  46 };
  47
  48 struct bnxt_ulp {
  49         void            *handle;
  50         struct bnxt_ulp_ops __rcu *ulp_ops;
  51         unsigned long   *async_events_bmap;
  52         u16             max_async_event_id;
  53         u16             msix_requested;
  54         u16             msix_base;
  55         atomic_t        ref_count;
  56 };
  57
  58 struct bnxt_en_dev {
  59         struct net_device *net;
  60         struct pci_dev *pdev;
  61         u32 flags;
  62         #define BNXT_EN_FLAG_ROCEV1_CAP         0x1
  63         #define BNXT_EN_FLAG_ROCEV2_CAP         0x2
  64         #define BNXT_EN_FLAG_ROCE_CAP           (BNXT_EN_FLAG_ROCEV1_CAP | \
  65                                                  BNXT_EN_FLAG_ROCEV2_CAP)
  66         #define BNXT_EN_FLAG_MSIX_REQUESTED     0x4
  67         #define BNXT_EN_FLAG_ULP_STOPPED        0x8
  68         const struct bnxt_en_ops        *en_ops;
  69         struct bnxt_ulp                 ulp_tbl[BNXT_MAX_ULP];
  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 };
  79
  80 struct bnxt_en_ops {
  81         int (*bnxt_register_device)(struct bnxt_en_dev *, int,
  82                                     struct bnxt_ulp_ops *, void *);
  83         int (*bnxt_unregister_device)(struct bnxt_en_dev *, int);
  84         int (*bnxt_request_msix)(struct bnxt_en_dev *, int,
  85                                  struct bnxt_msix_entry *, int);
  86         int (*bnxt_free_msix)(struct bnxt_en_dev *, int);
  87         int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, int,
  88                                 struct bnxt_fw_msg *);
  89         int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, int,
  90                                              unsigned long *, u16);
  91 };
  92
  93 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id)
  94 {
  95         if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops))
  96                 return true;
  97         return false;
  98 }
  99
 100 int bnxt_get_ulp_msix_num(struct bnxt *bp);
 101 int bnxt_get_ulp_msix_base(struct bnxt *bp);
 102 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
 103 void bnxt_ulp_stop(struct bnxt *bp);
 104 void bnxt_ulp_start(struct bnxt *bp, int err);
 105 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
 106 void bnxt_ulp_shutdown(struct bnxt *bp);
 107 void bnxt_ulp_irq_stop(struct bnxt *bp);
 108 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
 109 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
 110 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
 111
 112 #endif