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1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (C) 2022, Intel Corporation. */
3
4#ifndef _LIBIE_FWLOG_H_
5#define _LIBIE_FWLOG_H_
6
7#include <linux/net/intel/libie/adminq.h>
8
9/* Only a single log level should be set and all log levels under the set value
10 * are enabled, e.g. if log level is set to LIBIE_FW_LOG_LEVEL_VERBOSE, then all
11 * other log levels are included (except LIBIE_FW_LOG_LEVEL_NONE)
12 */
13enum libie_fwlog_level {
14 LIBIE_FWLOG_LEVEL_NONE = 0,
15 LIBIE_FWLOG_LEVEL_ERROR = 1,
16 LIBIE_FWLOG_LEVEL_WARNING = 2,
17 LIBIE_FWLOG_LEVEL_NORMAL = 3,
18 LIBIE_FWLOG_LEVEL_VERBOSE = 4,
19 LIBIE_FWLOG_LEVEL_INVALID, /* all values >= this entry are invalid */
20};
21
22struct libie_fwlog_module_entry {
23 /* module ID for the corresponding firmware logging event */
24 u16 module_id;
25 /* verbosity level for the module_id */
26 u8 log_level;
27};
28
29struct libie_fwlog_cfg {
30 /* list of modules for configuring log level */
31 struct libie_fwlog_module_entry module_entries[LIBIE_AQC_FW_LOG_ID_MAX];
32 /* options used to configure firmware logging */
33 u16 options;
34#define LIBIE_FWLOG_OPTION_ARQ_ENA BIT(0)
35#define LIBIE_FWLOG_OPTION_UART_ENA BIT(1)
36 /* set before calling libie_fwlog_init() so the PF registers for
37 * firmware logging on initialization
38 */
39#define LIBIE_FWLOG_OPTION_REGISTER_ON_INIT BIT(2)
40 /* set in the libie_aq_fwlog_get() response if the PF is registered for
41 * FW logging events over ARQ
42 */
43#define LIBIE_FWLOG_OPTION_IS_REGISTERED BIT(3)
44
45 /* minimum number of log events sent per Admin Receive Queue event */
46 u16 log_resolution;
47};
48
49struct libie_fwlog_data {
50 u16 data_size;
51 u8 *data;
52};
53
54struct libie_fwlog_ring {
55 struct libie_fwlog_data *rings;
56 u16 index;
57 u16 size;
58 u16 head;
59 u16 tail;
60};
61
62#define LIBIE_FWLOG_RING_SIZE_INDEX_DFLT 3
63#define LIBIE_FWLOG_RING_SIZE_DFLT 256
64#define LIBIE_FWLOG_RING_SIZE_MAX 512
65
66struct libie_fwlog {
67 struct libie_fwlog_cfg cfg;
68 bool supported; /* does hardware support FW logging? */
69 struct libie_fwlog_ring ring;
70 struct dentry *debugfs;
71 /* keep track of all the dentrys for FW log modules */
72 struct dentry **debugfs_modules;
73 struct_group_tagged(libie_fwlog_api, api,
74 struct pci_dev *pdev;
75 int (*send_cmd)(void *, struct libie_aq_desc *, void *, u16);
76 void *priv;
77 struct dentry *debugfs_root;
78 );
79};
80
81#if IS_ENABLED(CONFIG_LIBIE_FWLOG)
82int libie_fwlog_init(struct libie_fwlog *fwlog, struct libie_fwlog_api *api);
83void libie_fwlog_deinit(struct libie_fwlog *fwlog);
84void libie_fwlog_reregister(struct libie_fwlog *fwlog);
85void libie_get_fwlog_data(struct libie_fwlog *fwlog, u8 *buf, u16 len);
86#else
87static inline int libie_fwlog_init(struct libie_fwlog *fwlog,
88 struct libie_fwlog_api *api)
89{
90 return -EOPNOTSUPP;
91}
92static inline void libie_fwlog_deinit(struct libie_fwlog *fwlog) { }
93static inline void libie_fwlog_reregister(struct libie_fwlog *fwlog) { }
94static inline void libie_get_fwlog_data(struct libie_fwlog *fwlog, u8 *buf,
95 u16 len) { }
96#endif /* CONFIG_LIBIE_FWLOG */
97#endif /* _LIBIE_FWLOG_H_ */