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dfb99b050e
Based on the normalized pattern:
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
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright 2014 Cisco Systems, Inc. All rights reserved. */
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#ifndef __SNIC_TRC_H
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#define __SNIC_TRC_H
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#ifdef CONFIG_SCSI_SNIC_DEBUG_FS
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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 snic_trace_max_pages;
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/* Global Data structure for trace to manage trace functionality */
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struct snic_trc_data {
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u64 ts; /* Time Stamp */
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char *fn; /* Ptr to Function Name */
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u32 hno; /* SCSI Host ID */
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u32 tag; /* Command Tag */
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u64 data[5];
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} __attribute__((__packed__));
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#define SNIC_TRC_ENTRY_SZ 64 /* in Bytes */
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struct snic_trc {
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spinlock_t lock;
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struct snic_trc_data *buf; /* Trace Buffer */
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u32 max_idx; /* Max Index into trace buffer */
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u32 rd_idx;
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u32 wr_idx;
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bool enable; /* Control Variable for Tracing */
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};
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int snic_trc_init(void);
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void snic_trc_free(void);
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void snic_trc_debugfs_init(void);
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void snic_trc_debugfs_term(void);
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struct snic_trc_data *snic_get_trc_buf(void);
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int snic_get_trc_data(char *buf, int buf_sz);
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void snic_debugfs_init(void);
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void snic_debugfs_term(void);
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static inline void
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snic_trace(char *fn, u16 hno, u32 tag, u64 d1, u64 d2, u64 d3, u64 d4, u64 d5)
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{
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struct snic_trc_data *tr_rec = snic_get_trc_buf();
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if (!tr_rec)
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return;
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tr_rec->fn = (char *)fn;
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tr_rec->hno = hno;
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tr_rec->tag = tag;
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tr_rec->data[0] = d1;
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tr_rec->data[1] = d2;
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tr_rec->data[2] = d3;
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tr_rec->data[3] = d4;
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tr_rec->data[4] = d5;
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tr_rec->ts = jiffies; /* Update time stamp at last */
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}
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#define SNIC_TRC(_hno, _tag, d1, d2, d3, d4, d5) \
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do { \
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if (unlikely(snic_glob->trc.enable)) \
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snic_trace((char *)__func__, \
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(u16)(_hno), \
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(u32)(_tag), \
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(u64)(d1), \
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(u64)(d2), \
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(u64)(d3), \
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(u64)(d4), \
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(u64)(d5)); \
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} while (0)
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#else
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#define SNIC_TRC(_hno, _tag, d1, d2, d3, d4, d5) \
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do { \
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if (unlikely(snic_log_level & 0x2)) \
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SNIC_DBG("SnicTrace: %s %2u %2u %llx %llx %llx %llx %llx", \
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(char *)__func__, \
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(u16)(_hno), \
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(u32)(_tag), \
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(u64)(d1), \
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(u64)(d2), \
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(u64)(d3), \
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(u64)(d4), \
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(u64)(d5)); \
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} while (0)
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#endif /* end of CONFIG_SCSI_SNIC_DEBUG_FS */
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#define SNIC_TRC_CMD(sc) \
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((u64)sc->cmnd[0] << 56 | (u64)sc->cmnd[7] << 40 | \
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(u64)sc->cmnd[8] << 32 | (u64)sc->cmnd[2] << 24 | \
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(u64)sc->cmnd[3] << 16 | (u64)sc->cmnd[4] << 8 | \
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(u64)sc->cmnd[5])
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#define SNIC_TRC_CMD_STATE_FLAGS(sc) \
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((u64) CMD_FLAGS(sc) << 32 | CMD_STATE(sc))
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#endif /* end of __SNIC_TRC_H */
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