broadcom/bnxt/bnxt_ulp.h

0001 /* Broadcom NetXtreme-C/E network driver.
0002  *
0003  * Copyright (c) 2016-2018 Broadcom Limited
0004  *
0005  * This program is free software; you can redistribute it and/or modify
0006  * it under the terms of the GNU General Public License as published by
0007  * the Free Software Foundation.
0008  */
0009
0010 #ifndef BNXT_ULP_H
0011 #define BNXT_ULP_H
0012
0013 #define BNXT_ROCE_ULP   0
0014 #define BNXT_MAX_ULP    1
0015
0016 #define BNXT_MIN_ROCE_CP_RINGS  2
0017 #define BNXT_MIN_ROCE_STAT_CTXS 1
0018
0019 struct hwrm_async_event_cmpl;
0020 struct bnxt;
0021
0022 struct bnxt_msix_entry {
0023     u32 vector;
0024     u32 ring_idx;
0025     u32 db_offset;
0026 };
0027
0028 struct bnxt_ulp_ops {
0029     /* async_notifier() cannot sleep (in BH context) */
0030     void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *);
0031     void (*ulp_stop)(void *);
0032     void (*ulp_start)(void *);
0033     void (*ulp_sriov_config)(void *, int);
0034     void (*ulp_shutdown)(void *);
0035     void (*ulp_irq_stop)(void *);
0036     void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
0037 };
0038
0039 struct bnxt_fw_msg {
0040     void    *msg;
0041     int msg_len;
0042     void    *resp;
0043     int resp_max_len;
0044     int timeout;
0045 };
0046
0047 struct bnxt_ulp {
0048     void        *handle;
0049     struct bnxt_ulp_ops __rcu *ulp_ops;
0050     unsigned long   *async_events_bmap;
0051     u16     max_async_event_id;
0052     u16     msix_requested;
0053     u16     msix_base;
0054     atomic_t    ref_count;
0055 };
0056
0057 struct bnxt_en_dev {
0058     struct net_device *net;
0059     struct pci_dev *pdev;
0060     u32 flags;
0061     #define BNXT_EN_FLAG_ROCEV1_CAP     0x1
0062     #define BNXT_EN_FLAG_ROCEV2_CAP     0x2
0063     #define BNXT_EN_FLAG_ROCE_CAP       (BNXT_EN_FLAG_ROCEV1_CAP | \
0064                          BNXT_EN_FLAG_ROCEV2_CAP)
0065     #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4
0066     #define BNXT_EN_FLAG_ULP_STOPPED    0x8
0067     const struct bnxt_en_ops    *en_ops;
0068     struct bnxt_ulp         ulp_tbl[BNXT_MAX_ULP];
0069     int             l2_db_size; /* Doorbell BAR size in
0070                              * bytes mapped by L2
0071                              * driver.
0072                              */
0073     int             l2_db_size_nc;  /* Doorbell BAR size in
0074                              * bytes mapped as non-
0075                              * cacheable.
0076                              */
0077 };
0078
0079 struct bnxt_en_ops {
0080     int (*bnxt_register_device)(struct bnxt_en_dev *, unsigned int,
0081                     struct bnxt_ulp_ops *, void *);
0082     int (*bnxt_unregister_device)(struct bnxt_en_dev *, unsigned int);
0083     int (*bnxt_request_msix)(struct bnxt_en_dev *, unsigned int,
0084                  struct bnxt_msix_entry *, int);
0085     int (*bnxt_free_msix)(struct bnxt_en_dev *, unsigned int);
0086     int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, unsigned int,
0087                 struct bnxt_fw_msg *);
0088     int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, unsigned int,
0089                          unsigned long *, u16);
0090 };
0091
0092 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id)
0093 {
0094     if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops))
0095         return true;
0096     return false;
0097 }
0098
0099 int bnxt_get_ulp_msix_num(struct bnxt *bp);
0100 int bnxt_get_ulp_msix_base(struct bnxt *bp);
0101 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
0102 void bnxt_ulp_stop(struct bnxt *bp);
0103 void bnxt_ulp_start(struct bnxt *bp, int err);
0104 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
0105 void bnxt_ulp_shutdown(struct bnxt *bp);
0106 void bnxt_ulp_irq_stop(struct bnxt *bp);
0107 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
0108 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
0109 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
0110
0111 #endif