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_MIN_ROCE_CP_RINGS 2
14 #define BNXT_MIN_ROCE_STAT_CTXS 1
15
16 #define BNXT_MAX_ROCE_MSIX_VF 2
17 #define BNXT_MAX_ROCE_MSIX_NPAR_PF 5
18 #define BNXT_MAX_ROCE_MSIX 64
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_irq_stop)(void *, bool);
33 void (*ulp_irq_restart)(void *, struct bnxt_msix_entry *);
34 };
35
36 struct bnxt_fw_msg {
37 void *msg;
38 int msg_len;
39 void *resp;
40 int resp_max_len;
41 int timeout;
42 };
43
44 struct bnxt_ulp {
45 void *handle;
46 struct bnxt_ulp_ops __rcu *ulp_ops;
47 unsigned long *async_events_bmap;
48 u16 max_async_event_id;
49 u16 msix_requested;
50 };
51
52 struct bnxt_en_dev {
53 struct net_device *net;
54 struct pci_dev *pdev;
55 struct bnxt_msix_entry msix_entries[BNXT_MAX_ROCE_MSIX];
56 u32 flags;
57 #define BNXT_EN_FLAG_ROCEV1_CAP 0x1
58 #define BNXT_EN_FLAG_ROCEV2_CAP 0x2
59 #define BNXT_EN_FLAG_ROCE_CAP (BNXT_EN_FLAG_ROCEV1_CAP | \
60 BNXT_EN_FLAG_ROCEV2_CAP)
61 #define BNXT_EN_FLAG_MSIX_REQUESTED 0x4
62 #define BNXT_EN_FLAG_ULP_STOPPED 0x8
63 #define BNXT_EN_FLAG_VF 0x10
64 #define BNXT_EN_VF(edev) ((edev)->flags & BNXT_EN_FLAG_VF)
65 #define BNXT_EN_FLAG_ROCE_VF_RES_MGMT 0x20
66 #define BNXT_EN_FLAG_SW_RES_LMT 0x40
67 #define BNXT_EN_SW_RES_LMT(edev) ((edev)->flags & BNXT_EN_FLAG_SW_RES_LMT)
68
69 struct bnxt_ulp *ulp_tbl;
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 int l2_db_offset; /* Doorbell offset in
79 * bytes within
80 * l2_db_size_nc.
81 */
82 u16 chip_num;
83 u16 hw_ring_stats_size;
84 u16 pf_port_id;
85 unsigned long en_state; /* Could be checked in
86 * RoCE driver suspend
87 * mode only. Will be
88 * updated in resume.
89 */
90 void __iomem *bar0;
91
92 u16 ulp_num_msix_vec;
93 u16 ulp_num_ctxs;
94
95 /* serialize ulp operations */
96 struct mutex en_dev_lock;
97 };
98
bnxt_ulp_registered(struct bnxt_en_dev * edev)99 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev)
100 {
101 if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops))
102 return true;
103 return false;
104 }
105
106 int bnxt_get_ulp_msix_num(struct bnxt *bp);
107 int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp);
108 void bnxt_set_ulp_msix_num(struct bnxt *bp, int num);
109 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
110 void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs);
111 int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp);
112 void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp);
113 void bnxt_ulp_stop(struct bnxt *bp);
114 void bnxt_ulp_start(struct bnxt *bp, int err);
115 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
116 void bnxt_ulp_irq_stop(struct bnxt *bp);
117 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
118 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
119 void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
120 void bnxt_rdma_aux_device_del(struct bnxt *bp);
121 void bnxt_rdma_aux_device_add(struct bnxt *bp);
122 void bnxt_rdma_aux_device_init(struct bnxt *bp);
123 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
124 void *handle);
125 void bnxt_unregister_dev(struct bnxt_en_dev *edev);
126 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
127 void bnxt_register_async_events(struct bnxt_en_dev *edev,
128 unsigned long *events_bmap, u16 max_id);
129 #endif
130