LXR linux/drivers/net/ethernet/broadcom/bnxt/bnxt

   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
  20struct hwrm_async_event_cmpl;
  21struct bnxt;
  22
  23struct bnxt_msix_entry {
  24        u32     vector;
  25        u32     ring_idx;
  26        u32     db_offset;
  27};
  28
  29struct 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
  40struct bnxt_fw_msg {
  41        void    *msg;
  42        int     msg_len;
  43        void    *resp;
  44        int     resp_max_len;
  45        int     timeout;
  46};
  47
  48struct 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
  58struct 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
  80struct 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
  93static 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
 100int bnxt_get_ulp_msix_num(struct bnxt *bp);
 101int bnxt_get_ulp_msix_base(struct bnxt *bp);
 102int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
 103void bnxt_ulp_stop(struct bnxt *bp);
 104void bnxt_ulp_start(struct bnxt *bp, int err);
 105void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
 106void bnxt_ulp_shutdown(struct bnxt *bp);
 107void bnxt_ulp_irq_stop(struct bnxt *bp);
 108void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
 109void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
 110struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
 111
 112#endif
 113