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 struct hwrm_async_event_cmpl;
20 struct bnxt;
21
22 struct bnxt_msix_entry {
23 u32 vector;
24 u32 ring_idx;
25 u32 db_offset;
26 };
27
28 struct bnxt_ulp_ops {
29 /* async_notifier() cannot sleep (in BH context) */
30 void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *);
31 void (*ulp_stop)(void *);
32 void (*ulp_start)(void *);
33 void (*ulp_sriov_config)(void *, int);
34 void (*ulp_shutdown)(void *);
35 void (*ulp_irq_stop)(void *);
36 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
37 };
38
39 struct bnxt_fw_msg {
40 void *msg;
41 int msg_len;
42 void *resp;
43 int resp_max_len;
44 int timeout;
45 };
46
47 struct bnxt_ulp {
48 void *handle;
49 struct bnxt_ulp_ops __rcu *ulp_ops;
50 unsigned long *async_events_bmap;
51 u16 max_async_event_id;
52 u16 msix_requested;
53 u16 msix_base;
54 atomic_t ref_count;
55 };
56
57 struct bnxt_en_dev {
58 struct net_device *net;
59 struct pci_dev *pdev;
60 u32 flags;
61 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1
62 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2
63 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \
64 BNXT_EN_FLAG_ROCEV2_CAP)
65 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4
66 #define BNXT_EN_FLAG_ULP_STOPPED 0x8
67 const struct bnxt_en_ops *en_ops;
68 struct bnxt_ulp ulp_tbl[BNXT_MAX_ULP];
69 int l2_db_size; /* Doorbell BAR size in
70 * bytes mapped by L2
71 * driver.
72 */
73 int l2_db_size_nc; /* Doorbell BAR size in
74 * bytes mapped as non-
75 * cacheable.
76 */
77 };
78
79 struct bnxt_en_ops {
80 int (*bnxt_register_device)(struct bnxt_en_dev *, unsigned int,
81 struct bnxt_ulp_ops *, void *);
82 int (*bnxt_unregister_device)(struct bnxt_en_dev *, unsigned int);
83 int (*bnxt_request_msix)(struct bnxt_en_dev *, unsigned int,
84 struct bnxt_msix_entry *, int);
85 int (*bnxt_free_msix)(struct bnxt_en_dev *, unsigned int);
86 int (*bnxt_send_fw_msg)(struct bnxt_en_dev *, unsigned int,
87 struct bnxt_fw_msg *);
88 int (*bnxt_register_fw_async_events)(struct bnxt_en_dev *, unsigned int,
89 unsigned long *, u16);
90 };
91
bnxt_ulp_registered(struct bnxt_en_dev * edev,int ulp_id)92 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev, int ulp_id)
93 {
94 if (edev && rcu_access_pointer(edev->ulp_tbl[ulp_id].ulp_ops))
95 return true;
96 return false;
97 }
98
99 int bnxt_get_ulp_msix_num(struct bnxt *bp);
100 int bnxt_get_ulp_msix_base(struct bnxt *bp);
101 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
102 void bnxt_ulp_stop(struct bnxt *bp);
103 void bnxt_ulp_start(struct bnxt *bp, int err);
104 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
105 void bnxt_ulp_shutdown(struct bnxt *bp);
106 void bnxt_ulp_irq_stop(struct bnxt *bp);
107 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
108 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
109 struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
110
111 #endif
112