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 /* async_notifier() cannot sleep (in BH context) */
34 void (*ulp_async_notifier)(void *, struct hwrm_async_event_cmpl *);
35 void (*ulp_irq_stop)(void *, bool);
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 atomic_t ref_count;
54 };
55
56 struct bnxt_en_dev {
57 struct net_device *net;
58 struct pci_dev *pdev;
59 struct bnxt_msix_entry msix_entries[BNXT_MAX_ROCE_MSIX];
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 #define BNXT_EN_FLAG_VF 0x10
68 #define BNXT_EN_VF(edev) ((edev)->flags & BNXT_EN_FLAG_VF)
69 #define BNXT_EN_FLAG_ROCE_VF_RES_MGMT 0x20
70 #define BNXT_EN_FLAG_SW_RES_LMT 0x40
71 #define BNXT_EN_SW_RES_LMT(edev) ((edev)->flags & BNXT_EN_FLAG_SW_RES_LMT)
72
73 struct bnxt_ulp *ulp_tbl;
74 int l2_db_size; /* Doorbell BAR size in
75 * bytes mapped by L2
76 * driver.
77 */
78 int l2_db_size_nc; /* Doorbell BAR size in
79 * bytes mapped as non-
80 * cacheable.
81 */
82 int l2_db_offset; /* Doorbell offset in
83 * bytes within
84 * l2_db_size_nc.
85 */
86 u16 chip_num;
87 u16 hw_ring_stats_size;
88 u16 pf_port_id;
89 unsigned long en_state; /* Could be checked in
90 * RoCE driver suspend
91 * mode only. Will be
92 * updated in resume.
93 */
94 void __iomem *bar0;
95
96 u16 ulp_num_msix_vec;
97 u16 ulp_num_ctxs;
98
99 /* serialize ulp operations */
100 struct mutex en_dev_lock;
101 };
102
bnxt_ulp_registered(struct bnxt_en_dev * edev)103 static inline bool bnxt_ulp_registered(struct bnxt_en_dev *edev)
104 {
105 if (edev && rcu_access_pointer(edev->ulp_tbl->ulp_ops))
106 return true;
107 return false;
108 }
109
110 int bnxt_get_ulp_msix_num(struct bnxt *bp);
111 int bnxt_get_ulp_msix_num_in_use(struct bnxt *bp);
112 void bnxt_set_ulp_msix_num(struct bnxt *bp, int num);
113 int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
114 void bnxt_set_ulp_stat_ctxs(struct bnxt *bp, int num_ctxs);
115 int bnxt_get_ulp_stat_ctxs_in_use(struct bnxt *bp);
116 void bnxt_set_dflt_ulp_stat_ctxs(struct bnxt *bp);
117 void bnxt_ulp_stop(struct bnxt *bp);
118 void bnxt_ulp_start(struct bnxt *bp, int err);
119 void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
120 void bnxt_ulp_irq_stop(struct bnxt *bp);
121 void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
122 void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
123 void bnxt_rdma_aux_device_uninit(struct bnxt *bp);
124 void bnxt_rdma_aux_device_del(struct bnxt *bp);
125 void bnxt_rdma_aux_device_add(struct bnxt *bp);
126 void bnxt_rdma_aux_device_init(struct bnxt *bp);
127 int bnxt_register_dev(struct bnxt_en_dev *edev, struct bnxt_ulp_ops *ulp_ops,
128 void *handle);
129 void bnxt_unregister_dev(struct bnxt_en_dev *edev);
130 int bnxt_send_msg(struct bnxt_en_dev *edev, struct bnxt_fw_msg *fw_msg);
131 void bnxt_register_async_events(struct bnxt_en_dev *edev,
132 unsigned long *events_bmap, u16 max_id);
133 #endif
134