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4d7007b4 HP |
1 | /* |
2 | * Copyright 2012 Cisco Systems, Inc. All rights reserved. | |
3 | * | |
4 | * This program is free software; you may redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; version 2 of the License. | |
7 | * | |
8 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
9 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
10 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
11 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
12 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
13 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
14 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
15 | * SOFTWARE. | |
16 | */ | |
17 | ||
18 | #ifndef __FNIC_TRACE_H__ | |
19 | #define __FNIC_TRACE_H__ | |
20 | ||
21 | #define FNIC_ENTRY_SIZE_BYTES 64 | |
abb14148 HS |
22 | #define FC_TRC_SIZE_BYTES 256 |
23 | #define FC_TRC_HEADER_SIZE sizeof(struct fc_trace_hdr) | |
24 | ||
25 | /* | |
26 | * Fisrt bit of FNIC_FC_RECV and FNIC_FC_SEND is used to represent the type | |
27 | * of frame 1 => Eth frame, 0=> FC frame | |
28 | */ | |
29 | ||
30 | #define FNIC_FC_RECV 0x52 /* Character R */ | |
31 | #define FNIC_FC_SEND 0x54 /* Character T */ | |
32 | #define FNIC_FC_LE 0x4C /* Character L */ | |
4d7007b4 HP |
33 | |
34 | extern ssize_t simple_read_from_buffer(void __user *to, | |
35 | size_t count, | |
36 | loff_t *ppos, | |
37 | const void *from, | |
38 | size_t available); | |
39 | ||
40 | extern unsigned int fnic_trace_max_pages; | |
41 | extern int fnic_tracing_enabled; | |
42 | extern unsigned int trace_max_pages; | |
43 | ||
abb14148 HS |
44 | extern unsigned int fnic_fc_trace_max_pages; |
45 | extern int fnic_fc_tracing_enabled; | |
46 | extern int fnic_fc_trace_cleared; | |
47 | ||
4d7007b4 HP |
48 | typedef struct fnic_trace_dbg { |
49 | int wr_idx; | |
50 | int rd_idx; | |
51 | unsigned long *page_offset; | |
52 | } fnic_trace_dbg_t; | |
53 | ||
54 | typedef struct fnic_dbgfs { | |
55 | int buffer_len; | |
56 | char *buffer; | |
57 | } fnic_dbgfs_t; | |
58 | ||
59 | struct fnic_trace_data { | |
60 | union { | |
61 | struct { | |
62 | u32 low; | |
63 | u32 high; | |
64 | }; | |
65 | u64 val; | |
66 | } timestamp, fnaddr; | |
67 | u32 host_no; | |
68 | u32 tag; | |
69 | u64 data[5]; | |
70 | } __attribute__((__packed__)); | |
71 | ||
72 | typedef struct fnic_trace_data fnic_trace_data_t; | |
73 | ||
abb14148 HS |
74 | struct fc_trace_hdr { |
75 | struct timespec time_stamp; | |
76 | u32 host_no; | |
77 | u8 frame_type; | |
78 | u8 frame_len; | |
79 | } __attribute__((__packed__)); | |
80 | ||
81 | #define FC_TRACE_ADDRESS(a) \ | |
82 | ((unsigned long)(a) + sizeof(struct fc_trace_hdr)) | |
83 | ||
4d7007b4 HP |
84 | #define FNIC_TRACE_ENTRY_SIZE \ |
85 | (FNIC_ENTRY_SIZE_BYTES - sizeof(fnic_trace_data_t)) | |
86 | ||
87 | #define FNIC_TRACE(_fn, _hn, _t, _a, _b, _c, _d, _e) \ | |
88 | if (unlikely(fnic_tracing_enabled)) { \ | |
89 | fnic_trace_data_t *trace_buf = fnic_trace_get_buf(); \ | |
90 | if (trace_buf) { \ | |
91 | if (sizeof(unsigned long) < 8) { \ | |
92 | trace_buf->timestamp.low = jiffies; \ | |
93 | trace_buf->fnaddr.low = (u32)(unsigned long)_fn; \ | |
94 | } else { \ | |
95 | trace_buf->timestamp.val = jiffies; \ | |
96 | trace_buf->fnaddr.val = (u64)(unsigned long)_fn; \ | |
97 | } \ | |
98 | trace_buf->host_no = _hn; \ | |
99 | trace_buf->tag = _t; \ | |
100 | trace_buf->data[0] = (u64)(unsigned long)_a; \ | |
101 | trace_buf->data[1] = (u64)(unsigned long)_b; \ | |
102 | trace_buf->data[2] = (u64)(unsigned long)_c; \ | |
103 | trace_buf->data[3] = (u64)(unsigned long)_d; \ | |
104 | trace_buf->data[4] = (u64)(unsigned long)_e; \ | |
105 | } \ | |
106 | } | |
107 | ||
108 | fnic_trace_data_t *fnic_trace_get_buf(void); | |
109 | int fnic_get_trace_data(fnic_dbgfs_t *); | |
110 | int fnic_trace_buf_init(void); | |
111 | void fnic_trace_free(void); | |
67125b02 HP |
112 | int fnic_debugfs_init(void); |
113 | void fnic_debugfs_terminate(void); | |
4d7007b4 HP |
114 | int fnic_trace_debugfs_init(void); |
115 | void fnic_trace_debugfs_terminate(void); | |
abb14148 HS |
116 | |
117 | /* Fnic FC CTLR Trace releated function */ | |
118 | int fnic_fc_trace_init(void); | |
119 | void fnic_fc_trace_free(void); | |
120 | int fnic_fc_trace_set_data(u32 host_no, u8 frame_type, | |
121 | char *frame, u32 fc_frame_len); | |
122 | int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag); | |
123 | void copy_and_format_trace_data(struct fc_trace_hdr *tdata, | |
124 | fnic_dbgfs_t *fnic_dbgfs_prt, | |
125 | int *len, u8 rdata_flag); | |
126 | int fnic_fc_trace_debugfs_init(void); | |
127 | void fnic_fc_trace_debugfs_terminate(void); | |
128 | ||
4d7007b4 | 129 | #endif |