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
bnxt_ulp_registered(struct bnxt_en_dev * edev,int ulp_id)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
113