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115 lines
3.1 KiB
115 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* Copyright 2012 Cisco Systems, Inc. All rights reserved. */ |
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#ifndef __FNIC_TRACE_H__ |
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#define __FNIC_TRACE_H__ |
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#define FNIC_ENTRY_SIZE_BYTES 64 |
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#define FC_TRC_SIZE_BYTES 256 |
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#define FC_TRC_HEADER_SIZE sizeof(struct fc_trace_hdr) |
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/* |
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* Fisrt bit of FNIC_FC_RECV and FNIC_FC_SEND is used to represent the type |
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* of frame 1 => Eth frame, 0=> FC frame |
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*/ |
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#define FNIC_FC_RECV 0x52 /* Character R */ |
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#define FNIC_FC_SEND 0x54 /* Character T */ |
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#define FNIC_FC_LE 0x4C /* Character L */ |
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extern ssize_t simple_read_from_buffer(void __user *to, |
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size_t count, |
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loff_t *ppos, |
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const void *from, |
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size_t available); |
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extern unsigned int fnic_trace_max_pages; |
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extern int fnic_tracing_enabled; |
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extern unsigned int trace_max_pages; |
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extern unsigned int fnic_fc_trace_max_pages; |
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extern int fnic_fc_tracing_enabled; |
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extern int fnic_fc_trace_cleared; |
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typedef struct fnic_trace_dbg { |
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int wr_idx; |
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int rd_idx; |
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unsigned long *page_offset; |
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} fnic_trace_dbg_t; |
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typedef struct fnic_dbgfs { |
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int buffer_len; |
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char *buffer; |
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} fnic_dbgfs_t; |
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struct fnic_trace_data { |
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union { |
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struct { |
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u32 low; |
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u32 high; |
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}; |
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u64 val; |
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} timestamp, fnaddr; |
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u32 host_no; |
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u32 tag; |
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u64 data[5]; |
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} __attribute__((__packed__)); |
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typedef struct fnic_trace_data fnic_trace_data_t; |
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struct fc_trace_hdr { |
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struct timespec64 time_stamp; |
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u32 host_no; |
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u8 frame_type; |
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u8 frame_len; |
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} __attribute__((__packed__)); |
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#define FC_TRACE_ADDRESS(a) \ |
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((unsigned long)(a) + sizeof(struct fc_trace_hdr)) |
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#define FNIC_TRACE_ENTRY_SIZE \ |
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(FNIC_ENTRY_SIZE_BYTES - sizeof(fnic_trace_data_t)) |
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#define FNIC_TRACE(_fn, _hn, _t, _a, _b, _c, _d, _e) \ |
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if (unlikely(fnic_tracing_enabled)) { \ |
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fnic_trace_data_t *trace_buf = fnic_trace_get_buf(); \ |
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if (trace_buf) { \ |
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if (sizeof(unsigned long) < 8) { \ |
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trace_buf->timestamp.low = jiffies; \ |
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trace_buf->fnaddr.low = (u32)(unsigned long)_fn; \ |
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} else { \ |
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trace_buf->timestamp.val = jiffies; \ |
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trace_buf->fnaddr.val = (u64)(unsigned long)_fn; \ |
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} \ |
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trace_buf->host_no = _hn; \ |
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trace_buf->tag = _t; \ |
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trace_buf->data[0] = (u64)(unsigned long)_a; \ |
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trace_buf->data[1] = (u64)(unsigned long)_b; \ |
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trace_buf->data[2] = (u64)(unsigned long)_c; \ |
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trace_buf->data[3] = (u64)(unsigned long)_d; \ |
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trace_buf->data[4] = (u64)(unsigned long)_e; \ |
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} \ |
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} |
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fnic_trace_data_t *fnic_trace_get_buf(void); |
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int fnic_get_trace_data(fnic_dbgfs_t *); |
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int fnic_trace_buf_init(void); |
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void fnic_trace_free(void); |
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int fnic_debugfs_init(void); |
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void fnic_debugfs_terminate(void); |
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void fnic_trace_debugfs_init(void); |
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void fnic_trace_debugfs_terminate(void); |
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/* Fnic FC CTLR Trace releated function */ |
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int fnic_fc_trace_init(void); |
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void fnic_fc_trace_free(void); |
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int fnic_fc_trace_set_data(u32 host_no, u8 frame_type, |
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char *frame, u32 fc_frame_len); |
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int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag); |
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void copy_and_format_trace_data(struct fc_trace_hdr *tdata, |
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fnic_dbgfs_t *fnic_dbgfs_prt, |
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int *len, u8 rdata_flag); |
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void fnic_fc_trace_debugfs_init(void); |
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void fnic_fc_trace_debugfs_terminate(void); |
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#endif
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