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1/* SPDX-License-Identifier: GPL-2.0-only */2/* Copyright 2012 Cisco Systems, Inc. All rights reserved. */3 4#ifndef __FNIC_TRACE_H__5#define __FNIC_TRACE_H__6 7#define FNIC_ENTRY_SIZE_BYTES 648#define FC_TRC_SIZE_BYTES 2569#define FC_TRC_HEADER_SIZE sizeof(struct fc_trace_hdr)10 11/*12 * Fisrt bit of FNIC_FC_RECV and FNIC_FC_SEND is used to represent the type13 * of frame 1 => Eth frame, 0=> FC frame14 */15 16#define FNIC_FC_RECV 0x52 /* Character R */17#define FNIC_FC_SEND 0x54 /* Character T */18#define FNIC_FC_LE 0x4C /* Character L */19 20extern ssize_t simple_read_from_buffer(void __user *to,21 size_t count,22 loff_t *ppos,23 const void *from,24 size_t available);25 26extern unsigned int fnic_trace_max_pages;27extern int fnic_tracing_enabled;28extern unsigned int trace_max_pages;29 30extern unsigned int fnic_fc_trace_max_pages;31extern int fnic_fc_tracing_enabled;32extern int fnic_fc_trace_cleared;33 34typedef struct fnic_trace_dbg {35 int wr_idx;36 int rd_idx;37 unsigned long *page_offset;38} fnic_trace_dbg_t;39 40typedef struct fnic_dbgfs {41 int buffer_len;42 char *buffer;43} fnic_dbgfs_t;44 45struct fnic_trace_data {46 union {47 struct {48 u32 low;49 u32 high;50 };51 u64 val;52 } timestamp, fnaddr;53 u32 host_no;54 u32 tag;55 u64 data[5];56} __attribute__((__packed__));57 58typedef struct fnic_trace_data fnic_trace_data_t;59 60struct fc_trace_hdr {61 struct timespec64 time_stamp;62 u32 host_no;63 u8 frame_type;64 u8 frame_len;65} __attribute__((__packed__));66 67#define FC_TRACE_ADDRESS(a) \68 ((unsigned long)(a) + sizeof(struct fc_trace_hdr))69 70#define FNIC_TRACE_ENTRY_SIZE \71 (FNIC_ENTRY_SIZE_BYTES - sizeof(fnic_trace_data_t))72 73#define FNIC_TRACE(_fn, _hn, _t, _a, _b, _c, _d, _e) \74 if (unlikely(fnic_tracing_enabled)) { \75 fnic_trace_data_t *trace_buf = fnic_trace_get_buf(); \76 if (trace_buf) { \77 if (sizeof(unsigned long) < 8) { \78 trace_buf->timestamp.low = jiffies; \79 trace_buf->fnaddr.low = (u32)(unsigned long)_fn; \80 } else { \81 trace_buf->timestamp.val = jiffies; \82 trace_buf->fnaddr.val = (u64)(unsigned long)_fn; \83 } \84 trace_buf->host_no = _hn; \85 trace_buf->tag = _t; \86 trace_buf->data[0] = (u64)(unsigned long)_a; \87 trace_buf->data[1] = (u64)(unsigned long)_b; \88 trace_buf->data[2] = (u64)(unsigned long)_c; \89 trace_buf->data[3] = (u64)(unsigned long)_d; \90 trace_buf->data[4] = (u64)(unsigned long)_e; \91 } \92 }93 94fnic_trace_data_t *fnic_trace_get_buf(void);95int fnic_get_trace_data(fnic_dbgfs_t *);96int fnic_trace_buf_init(void);97void fnic_trace_free(void);98int fnic_debugfs_init(void);99void fnic_debugfs_terminate(void);100void fnic_trace_debugfs_init(void);101void fnic_trace_debugfs_terminate(void);102 103/* Fnic FC CTLR Trace releated function */104int fnic_fc_trace_init(void);105void fnic_fc_trace_free(void);106int fnic_fc_trace_set_data(u32 host_no, u8 frame_type,107 char *frame, u32 fc_frame_len);108int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag);109void copy_and_format_trace_data(struct fc_trace_hdr *tdata,110 fnic_dbgfs_t *fnic_dbgfs_prt,111 int *len, u8 rdata_flag);112void fnic_fc_trace_debugfs_init(void);113void fnic_fc_trace_debugfs_terminate(void);114 115#endif116