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 #define BNXT_MAX_ROCE_MSIX_VF 2
20 #define BNXT_MAX_ROCE_MSIX_NPAR_PF 5
21 #define BNXT_MAX_ROCE_MSIX 64
22
23 struct hwrm_async_event_cmpl;
24 struct bnxt;
25
26 struct bnxt_msix_entry {
27 u32 vector;
28 u32 ring_idx;
29 u32 db_offset;
30 };
31
32 struct bnxt_ulp_ops {
33 void (*ulp_irq_stop)(void *);
34 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
35 };
36
37 struct bnxt_fw_msg {
38 void *msg;
39 int msg_len;
40 void *resp;
41 int resp_max_len;
42 int timeout;
43 };
44
45 struct bnxt_ulp {
46 void *handle;
47 struct bnxt_ulp_ops __rcu *ulp_ops;
48 unsigned long *async_events_bmap;
49 u16 max_async_event_id;
50 u16 msix_requested;
51 atomic_t ref_count;
52 };
53
54 struct bnxt_en_dev {
55 struct net_device *net;
56 struct pci_dev *pdev;
57 struct bnxt_msix_entry msix_entries[BNXT_MAX_ROCE_MSIX];
58 u32 flags;
59 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1
60 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2
61 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \
62 BNXT_EN_FLAG_ROCEV2_CAP)
63 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4
64 #define BNXT_EN_FLAG_ULP_STOPPED 0x8
65 #define BNXT_EN_FLAG_VF 0x10
66 #define BNXT_EN_VF(edev) ((edev)->flags & BNXT_EN_FLAG_VF)
67
68 struct bnxt_ulp *ulp_tbl;
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 int l2_db_offset; /* Doorbell offset in
78 * bytes within
79 * l2_db_size_nc.
80 */
81 u16 chip_num;
82 u16 hw_ring_stats_size;
83 u16 pf_port_id;
84 unsigned long en_state; /* Could be checked in
85 * RoCE driver suspend
86 * mode only. Will be
87 * updated in resume.
88 */
89 void __iomem *bar0;
90
91 u16 ulp_num_msix_vec;
92 u16 ulp_num_ctxs;
93
94 /* serialize ulp operations */
95 struct mutex en_dev_lock;
96 };
97
bnxt_ulp_registered(struct bnxt_en_dev * edev)98 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev)
99 {
100 if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops))
101 return true;
102 return false;
103 }
104
105 int bnxt_get_ulp_msix_num(struct bnxt *bp);
106 int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp);
107 void bnxt_set_ulp_msix_num(struct bnxt *bp, int num);
108 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
109 void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs);
110 int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp);
111 void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp);
112 void bnxt_ulp_stop(struct bnxt *bp);
113 void bnxt_ulp_start(struct bnxt *bp, int err);
114 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
115 void bnxt_ulp_irq_stop(struct bnxt *bp);
116 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
117 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
118 void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
119 void bnxt_rdma_aux_device_del(struct bnxt *bp);
120 void bnxt_rdma_aux_device_add(struct bnxt *bp);
121 void bnxt_rdma_aux_device_init(struct bnxt *bp);
122 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
123 void *handle);
124 void bnxt_unregister_dev(struct bnxt_en_dev *edev);
125 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
126 int bnxt_register_async_events(struct bnxt_en_dev *edev,
127 unsigned long *events_bmap, u16 max_id);
128 #endif
129