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 #define BNXT_MAX_ROCE_MSIX 9
19 #define BNXT_MAX_VF_ROCE_MSIX 2
20
21 struct hwrm_async_event_cmpl;
22 struct bnxt;
23
24 struct bnxt_msix_entry {
25 u32 vector;
26 u32 ring_idx;
27 u32 db_offset;
28 };
29
30 struct bnxt_ulp_ops {
31 void (*ulp_irq_stop)(void *);
32 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
33 };
34
35 struct bnxt_fw_msg {
36 void *msg;
37 int msg_len;
38 void *resp;
39 int resp_max_len;
40 int timeout;
41 };
42
43 struct bnxt_ulp {
44 void *handle;
45 struct bnxt_ulp_ops __rcu *ulp_ops;
46 unsigned long *async_events_bmap;
47 u16 max_async_event_id;
48 u16 msix_requested;
49 u16 msix_base;
50 atomic_t ref_count;
51 };
52
53 struct bnxt_en_dev {
54 struct net_device *net;
55 struct pci_dev *pdev;
56 struct bnxt_msix_entry msix_entries[BNXT_MAX_ROCE_MSIX];
57 u32 flags;
58 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1
59 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2
60 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \
61 BNXT_EN_FLAG_ROCEV2_CAP)
62 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4
63 #define BNXT_EN_FLAG_ULP_STOPPED 0x8
64 #define BNXT_EN_FLAG_VF 0x10
65 #define BNXT_EN_VF(edev) ((edev)->flags & BNXT_EN_FLAG_VF)
66
67 struct bnxt_ulp *ulp_tbl;
68 int l2_db_size; /* Doorbell BAR size in
69 * bytes mapped by L2
70 * driver.
71 */
72 int l2_db_size_nc; /* Doorbell BAR size in
73 * bytes mapped as non-
74 * cacheable.
75 */
76 int l2_db_offset; /* Doorbell offset in
77 * bytes within
78 * l2_db_size_nc.
79 */
80 u16 chip_num;
81 u16 hw_ring_stats_size;
82 u16 pf_port_id;
83 unsigned long en_state; /* Could be checked in
84 * RoCE driver suspend
85 * mode only. Will be
86 * updated in resume.
87 */
88 void __iomem *bar0;
89 };
90
bnxt_ulp_registered(struct bnxt_en_dev * edev)91 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev)
92 {
93 if (edev && edev->ulp_tbl)
94 return true;
95 return false;
96 }
97
98 int bnxt_get_ulp_msix_num(struct bnxt *bp);
99 int bnxt_get_ulp_msix_base(struct bnxt *bp);
100 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
101 void bnxt_ulp_stop(struct bnxt *bp);
102 void bnxt_ulp_start(struct bnxt *bp, int err);
103 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
104 void bnxt_ulp_irq_stop(struct bnxt *bp);
105 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
106 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
107 void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
108 void bnxt_rdma_aux_device_init(struct bnxt *bp);
109 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
110 void *handle);
111 void bnxt_unregister_dev(struct bnxt_en_dev *edev);
112 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
113 int bnxt_register_async_events(struct bnxt_en_dev *edev,
114 unsigned long *events_bmap, u16 max_id);
115 #endif
116