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

   1 /* Broadcom NetXtreme-C/E network driver.
   2  *
   3  * Copyright (c) 2016 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_ulp_ops {
  24         /* async_notifier() cannot sleep (in BH context) */
  25         void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *);
  26         void (*ulp_stop)(void *);
  27         void (*ulp_start)(void *);
  28         void (*ulp_sriov_config)(void *, int);
  29         void (*ulp_shutdown)(void *);
  30 };
  31
  32 struct bnxt_msix_entry {
  33         u32     vector;
  34         u32     ring_idx;
  35         u32     db_offset;
  36 };
  37
  38 struct bnxt_fw_msg {
  39         void    *msg;
  40         int     msg_len;
  41         void    *resp;
  42         int     resp_max_len;
  43         int     timeout;
  44 };
  45
  46 struct bnxt_ulp {
  47         void            *handle;
  48         struct bnxt_ulp_ops __rcu *ulp_ops;
  49         unsigned long   *async_events_bmap;
  50         u16             max_async_event_id;
  51         u16             msix_requested;
  52         atomic_t        ref_count;
  53 };
  54
  55 struct bnxt_en_dev {
  56         struct net_device *net;
  57         struct pci_dev *pdev;
  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         const struct bnxt_en_ops        *en_ops;
  64         struct bnxt_ulp                 ulp_tbl[BNXT_MAX_ULP];
  65 };
  66
  67 struct bnxt_en_ops {
  68         int (*bnxt_register_device)(struct bnxt_en_dev *, int,
  69                                     struct bnxt_ulp_ops *, void *);
  70         int (*bnxt_unregister_device)(struct bnxt_en_dev *, int);
  71         int (*bnxt_request_msix)(struct bnxt_en_dev *, int,
  72                                  struct bnxt_msix_entry *, int);
  73         int (*bnxt_free_msix)(struct bnxt_en_dev *, int);
  74         int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, int,
  75                                 struct bnxt_fw_msg *);
  76         int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, int,
  77                                              unsigned long *, u16);
  78 };
  79
  80 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id)
  81 {
  82         if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops))
  83                 return true;
  84         return false;
  85 }
  86
  87 void bnxt_subtract_ulp_resources(struct bnxt *bp, int ulp_id);
  88 void bnxt_ulp_stop(struct bnxt *bp);
  89 void bnxt_ulp_start(struct bnxt *bp);
  90 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
  91 void bnxt_ulp_shutdown(struct bnxt *bp);
  92 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
  93 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
  94
  95 #endif