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