mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 18:39:59 +00:00
![Wolfram Sang](/assets/img/avatar_default.png)
Break out the exported SMBus functions and the emulation layer into a separate file. This also involved splitting up the tracing header into an I2C and an SMBus part. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
249 lines
7.5 KiB
C
249 lines
7.5 KiB
C
/* SMBUS message transfer tracepoints
|
|
*
|
|
* Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM smbus
|
|
|
|
#if !defined(_TRACE_SMBUS_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_SMBUS_H
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
/*
|
|
* drivers/i2c/i2c-core-smbus.c
|
|
*/
|
|
|
|
/*
|
|
* i2c_smbus_xfer() write data or procedure call request
|
|
*/
|
|
TRACE_EVENT_CONDITION(smbus_write,
|
|
TP_PROTO(const struct i2c_adapter *adap,
|
|
u16 addr, unsigned short flags,
|
|
char read_write, u8 command, int protocol,
|
|
const union i2c_smbus_data *data),
|
|
TP_ARGS(adap, addr, flags, read_write, command, protocol, data),
|
|
TP_CONDITION(read_write == I2C_SMBUS_WRITE ||
|
|
protocol == I2C_SMBUS_PROC_CALL ||
|
|
protocol == I2C_SMBUS_BLOCK_PROC_CALL),
|
|
TP_STRUCT__entry(
|
|
__field(int, adapter_nr )
|
|
__field(__u16, addr )
|
|
__field(__u16, flags )
|
|
__field(__u8, command )
|
|
__field(__u8, len )
|
|
__field(__u32, protocol )
|
|
__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
|
|
TP_fast_assign(
|
|
__entry->adapter_nr = adap->nr;
|
|
__entry->addr = addr;
|
|
__entry->flags = flags;
|
|
__entry->command = command;
|
|
__entry->protocol = protocol;
|
|
|
|
switch (protocol) {
|
|
case I2C_SMBUS_BYTE_DATA:
|
|
__entry->len = 1;
|
|
goto copy;
|
|
case I2C_SMBUS_WORD_DATA:
|
|
case I2C_SMBUS_PROC_CALL:
|
|
__entry->len = 2;
|
|
goto copy;
|
|
case I2C_SMBUS_BLOCK_DATA:
|
|
case I2C_SMBUS_BLOCK_PROC_CALL:
|
|
case I2C_SMBUS_I2C_BLOCK_DATA:
|
|
__entry->len = data->block[0] + 1;
|
|
copy:
|
|
memcpy(__entry->buf, data->block, __entry->len);
|
|
break;
|
|
case I2C_SMBUS_QUICK:
|
|
case I2C_SMBUS_BYTE:
|
|
case I2C_SMBUS_I2C_BLOCK_BROKEN:
|
|
default:
|
|
__entry->len = 0;
|
|
}
|
|
),
|
|
TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
|
|
__entry->adapter_nr,
|
|
__entry->addr,
|
|
__entry->flags,
|
|
__entry->command,
|
|
__print_symbolic(__entry->protocol,
|
|
{ I2C_SMBUS_QUICK, "QUICK" },
|
|
{ I2C_SMBUS_BYTE, "BYTE" },
|
|
{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
|
|
{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
|
|
{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
|
|
{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
|
|
{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
|
|
{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
|
|
{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
|
|
__entry->len,
|
|
__entry->len, __entry->buf
|
|
));
|
|
|
|
/*
|
|
* i2c_smbus_xfer() read data request
|
|
*/
|
|
TRACE_EVENT_CONDITION(smbus_read,
|
|
TP_PROTO(const struct i2c_adapter *adap,
|
|
u16 addr, unsigned short flags,
|
|
char read_write, u8 command, int protocol),
|
|
TP_ARGS(adap, addr, flags, read_write, command, protocol),
|
|
TP_CONDITION(!(read_write == I2C_SMBUS_WRITE ||
|
|
protocol == I2C_SMBUS_PROC_CALL ||
|
|
protocol == I2C_SMBUS_BLOCK_PROC_CALL)),
|
|
TP_STRUCT__entry(
|
|
__field(int, adapter_nr )
|
|
__field(__u16, flags )
|
|
__field(__u16, addr )
|
|
__field(__u8, command )
|
|
__field(__u32, protocol )
|
|
__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
|
|
TP_fast_assign(
|
|
__entry->adapter_nr = adap->nr;
|
|
__entry->addr = addr;
|
|
__entry->flags = flags;
|
|
__entry->command = command;
|
|
__entry->protocol = protocol;
|
|
),
|
|
TP_printk("i2c-%d a=%03x f=%04x c=%x %s",
|
|
__entry->adapter_nr,
|
|
__entry->addr,
|
|
__entry->flags,
|
|
__entry->command,
|
|
__print_symbolic(__entry->protocol,
|
|
{ I2C_SMBUS_QUICK, "QUICK" },
|
|
{ I2C_SMBUS_BYTE, "BYTE" },
|
|
{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
|
|
{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
|
|
{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
|
|
{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
|
|
{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
|
|
{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
|
|
{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" })
|
|
));
|
|
|
|
/*
|
|
* i2c_smbus_xfer() read data or procedure call reply
|
|
*/
|
|
TRACE_EVENT_CONDITION(smbus_reply,
|
|
TP_PROTO(const struct i2c_adapter *adap,
|
|
u16 addr, unsigned short flags,
|
|
char read_write, u8 command, int protocol,
|
|
const union i2c_smbus_data *data),
|
|
TP_ARGS(adap, addr, flags, read_write, command, protocol, data),
|
|
TP_CONDITION(read_write == I2C_SMBUS_READ),
|
|
TP_STRUCT__entry(
|
|
__field(int, adapter_nr )
|
|
__field(__u16, addr )
|
|
__field(__u16, flags )
|
|
__field(__u8, command )
|
|
__field(__u8, len )
|
|
__field(__u32, protocol )
|
|
__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
|
|
TP_fast_assign(
|
|
__entry->adapter_nr = adap->nr;
|
|
__entry->addr = addr;
|
|
__entry->flags = flags;
|
|
__entry->command = command;
|
|
__entry->protocol = protocol;
|
|
|
|
switch (protocol) {
|
|
case I2C_SMBUS_BYTE:
|
|
case I2C_SMBUS_BYTE_DATA:
|
|
__entry->len = 1;
|
|
goto copy;
|
|
case I2C_SMBUS_WORD_DATA:
|
|
case I2C_SMBUS_PROC_CALL:
|
|
__entry->len = 2;
|
|
goto copy;
|
|
case I2C_SMBUS_BLOCK_DATA:
|
|
case I2C_SMBUS_BLOCK_PROC_CALL:
|
|
case I2C_SMBUS_I2C_BLOCK_DATA:
|
|
__entry->len = data->block[0] + 1;
|
|
copy:
|
|
memcpy(__entry->buf, data->block, __entry->len);
|
|
break;
|
|
case I2C_SMBUS_QUICK:
|
|
case I2C_SMBUS_I2C_BLOCK_BROKEN:
|
|
default:
|
|
__entry->len = 0;
|
|
}
|
|
),
|
|
TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
|
|
__entry->adapter_nr,
|
|
__entry->addr,
|
|
__entry->flags,
|
|
__entry->command,
|
|
__print_symbolic(__entry->protocol,
|
|
{ I2C_SMBUS_QUICK, "QUICK" },
|
|
{ I2C_SMBUS_BYTE, "BYTE" },
|
|
{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
|
|
{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
|
|
{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
|
|
{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
|
|
{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
|
|
{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
|
|
{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
|
|
__entry->len,
|
|
__entry->len, __entry->buf
|
|
));
|
|
|
|
/*
|
|
* i2c_smbus_xfer() result
|
|
*/
|
|
TRACE_EVENT(smbus_result,
|
|
TP_PROTO(const struct i2c_adapter *adap,
|
|
u16 addr, unsigned short flags,
|
|
char read_write, u8 command, int protocol,
|
|
int res),
|
|
TP_ARGS(adap, addr, flags, read_write, command, protocol, res),
|
|
TP_STRUCT__entry(
|
|
__field(int, adapter_nr )
|
|
__field(__u16, addr )
|
|
__field(__u16, flags )
|
|
__field(__u8, read_write )
|
|
__field(__u8, command )
|
|
__field(__s16, res )
|
|
__field(__u32, protocol )
|
|
),
|
|
TP_fast_assign(
|
|
__entry->adapter_nr = adap->nr;
|
|
__entry->addr = addr;
|
|
__entry->flags = flags;
|
|
__entry->read_write = read_write;
|
|
__entry->command = command;
|
|
__entry->protocol = protocol;
|
|
__entry->res = res;
|
|
),
|
|
TP_printk("i2c-%d a=%03x f=%04x c=%x %s %s res=%d",
|
|
__entry->adapter_nr,
|
|
__entry->addr,
|
|
__entry->flags,
|
|
__entry->command,
|
|
__print_symbolic(__entry->protocol,
|
|
{ I2C_SMBUS_QUICK, "QUICK" },
|
|
{ I2C_SMBUS_BYTE, "BYTE" },
|
|
{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
|
|
{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
|
|
{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
|
|
{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
|
|
{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
|
|
{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
|
|
{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
|
|
__entry->read_write == I2C_SMBUS_WRITE ? "wr" : "rd",
|
|
__entry->res
|
|
));
|
|
|
|
#endif /* _TRACE_SMBUS_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|