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
20struct hwrm_async_event_cmpl;
21struct bnxt;
22
23struct bnxt_msix_entry {
24	u32	vector;
25	u32	ring_idx;
26	u32	db_offset;
27};
28
29struct 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
40struct bnxt_fw_msg {
41	void	*msg;
42	int	msg_len;
43	void	*resp;
44	int	resp_max_len;
45	int	timeout;
46};
47
48struct 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
58struct 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
80struct 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
93static 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
100int bnxt_get_ulp_msix_num(struct bnxt *bp);
101int bnxt_get_ulp_msix_base(struct bnxt *bp);
102int bnxt_get_ulp_stat_ctxs(struct bnxt *bp);
103void bnxt_ulp_stop(struct bnxt *bp);
104void bnxt_ulp_start(struct bnxt *bp, int err);
105void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs);
106void bnxt_ulp_shutdown(struct bnxt *bp);
107void bnxt_ulp_irq_stop(struct bnxt *bp);
108void bnxt_ulp_irq_restart(struct bnxt *bp, int err);
109void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl);
110struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev);
111
112#endif
113