373 lines
11 KiB
C
373 lines
11 KiB
C
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/* I2C and SMBUS message transfer tracepoints
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*
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* Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM i2c
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#if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_I2C_H
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#include <linux/i2c.h>
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#include <linux/tracepoint.h>
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/*
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* drivers/i2c/i2c-core.c
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*/
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extern void i2c_transfer_trace_reg(void);
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extern void i2c_transfer_trace_unreg(void);
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/*
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* __i2c_transfer() write request
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*/
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TRACE_EVENT_FN(i2c_write,
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TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
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int num),
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TP_ARGS(adap, msg, num),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, msg_nr )
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__field(__u16, addr )
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__field(__u16, flags )
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__field(__u16, len )
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__dynamic_array(__u8, buf, msg->len) ),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->msg_nr = num;
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__entry->addr = msg->addr;
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__entry->flags = msg->flags;
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__entry->len = msg->len;
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memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
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),
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TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
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__entry->adapter_nr,
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__entry->msg_nr,
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__entry->addr,
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__entry->flags,
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__entry->len,
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__entry->len, __get_dynamic_array(buf)
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),
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i2c_transfer_trace_reg,
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i2c_transfer_trace_unreg);
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/*
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* __i2c_transfer() read request
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*/
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TRACE_EVENT_FN(i2c_read,
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TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
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int num),
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TP_ARGS(adap, msg, num),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, msg_nr )
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__field(__u16, addr )
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__field(__u16, flags )
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__field(__u16, len )
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),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->msg_nr = num;
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__entry->addr = msg->addr;
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__entry->flags = msg->flags;
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__entry->len = msg->len;
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),
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TP_printk("i2c-%d #%u a=%03x f=%04x l=%u",
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__entry->adapter_nr,
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__entry->msg_nr,
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__entry->addr,
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__entry->flags,
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__entry->len
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),
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i2c_transfer_trace_reg,
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i2c_transfer_trace_unreg);
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/*
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* __i2c_transfer() read reply
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*/
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TRACE_EVENT_FN(i2c_reply,
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TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
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int num),
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TP_ARGS(adap, msg, num),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, msg_nr )
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__field(__u16, addr )
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__field(__u16, flags )
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__field(__u16, len )
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__dynamic_array(__u8, buf, msg->len) ),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->msg_nr = num;
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__entry->addr = msg->addr;
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__entry->flags = msg->flags;
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__entry->len = msg->len;
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memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
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),
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TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
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__entry->adapter_nr,
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__entry->msg_nr,
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__entry->addr,
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__entry->flags,
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__entry->len,
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__entry->len, __get_dynamic_array(buf)
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),
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i2c_transfer_trace_reg,
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i2c_transfer_trace_unreg);
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/*
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* __i2c_transfer() result
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*/
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TRACE_EVENT_FN(i2c_result,
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TP_PROTO(const struct i2c_adapter *adap, int num, int ret),
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TP_ARGS(adap, num, ret),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, nr_msgs )
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__field(__s16, ret )
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),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->nr_msgs = num;
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__entry->ret = ret;
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),
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TP_printk("i2c-%d n=%u ret=%d",
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__entry->adapter_nr,
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__entry->nr_msgs,
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__entry->ret
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),
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i2c_transfer_trace_reg,
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i2c_transfer_trace_unreg);
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/*
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* i2c_smbus_xfer() write data or procedure call request
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*/
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TRACE_EVENT_CONDITION(smbus_write,
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TP_PROTO(const struct i2c_adapter *adap,
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u16 addr, unsigned short flags,
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char read_write, u8 command, int protocol,
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const union i2c_smbus_data *data),
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TP_ARGS(adap, addr, flags, read_write, command, protocol, data),
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TP_CONDITION(read_write == I2C_SMBUS_WRITE ||
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protocol == I2C_SMBUS_PROC_CALL ||
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protocol == I2C_SMBUS_BLOCK_PROC_CALL),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, addr )
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__field(__u16, flags )
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__field(__u8, command )
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__field(__u8, len )
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__field(__u32, protocol )
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__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->addr = addr;
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__entry->flags = flags;
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__entry->command = command;
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__entry->protocol = protocol;
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switch (protocol) {
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case I2C_SMBUS_BYTE_DATA:
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__entry->len = 1;
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goto copy;
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case I2C_SMBUS_WORD_DATA:
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case I2C_SMBUS_PROC_CALL:
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__entry->len = 2;
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goto copy;
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case I2C_SMBUS_BLOCK_DATA:
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case I2C_SMBUS_BLOCK_PROC_CALL:
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case I2C_SMBUS_I2C_BLOCK_DATA:
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__entry->len = data->block[0] + 1;
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copy:
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memcpy(__entry->buf, data->block, __entry->len);
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break;
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case I2C_SMBUS_QUICK:
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case I2C_SMBUS_BYTE:
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case I2C_SMBUS_I2C_BLOCK_BROKEN:
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default:
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__entry->len = 0;
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}
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),
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TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
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__entry->adapter_nr,
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__entry->addr,
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__entry->flags,
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__entry->command,
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__print_symbolic(__entry->protocol,
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{ I2C_SMBUS_QUICK, "QUICK" },
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{ I2C_SMBUS_BYTE, "BYTE" },
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{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
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{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
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{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
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{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
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{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
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{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
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{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
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__entry->len,
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__entry->len, __entry->buf
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));
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/*
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* i2c_smbus_xfer() read data request
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*/
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TRACE_EVENT_CONDITION(smbus_read,
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TP_PROTO(const struct i2c_adapter *adap,
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u16 addr, unsigned short flags,
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char read_write, u8 command, int protocol),
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TP_ARGS(adap, addr, flags, read_write, command, protocol),
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TP_CONDITION(!(read_write == I2C_SMBUS_WRITE ||
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protocol == I2C_SMBUS_PROC_CALL ||
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protocol == I2C_SMBUS_BLOCK_PROC_CALL)),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, flags )
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__field(__u16, addr )
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__field(__u8, command )
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__field(__u32, protocol )
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__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->addr = addr;
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__entry->flags = flags;
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__entry->command = command;
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__entry->protocol = protocol;
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),
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TP_printk("i2c-%d a=%03x f=%04x c=%x %s",
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__entry->adapter_nr,
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__entry->addr,
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__entry->flags,
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__entry->command,
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__print_symbolic(__entry->protocol,
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{ I2C_SMBUS_QUICK, "QUICK" },
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{ I2C_SMBUS_BYTE, "BYTE" },
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{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
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{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
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{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
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{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
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{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
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{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
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{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" })
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));
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/*
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* i2c_smbus_xfer() read data or procedure call reply
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*/
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TRACE_EVENT_CONDITION(smbus_reply,
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TP_PROTO(const struct i2c_adapter *adap,
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u16 addr, unsigned short flags,
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char read_write, u8 command, int protocol,
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const union i2c_smbus_data *data),
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TP_ARGS(adap, addr, flags, read_write, command, protocol, data),
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TP_CONDITION(read_write == I2C_SMBUS_READ),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, addr )
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__field(__u16, flags )
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__field(__u8, command )
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__field(__u8, len )
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__field(__u32, protocol )
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__array(__u8, buf, I2C_SMBUS_BLOCK_MAX + 2) ),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->addr = addr;
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__entry->flags = flags;
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__entry->command = command;
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__entry->protocol = protocol;
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switch (protocol) {
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case I2C_SMBUS_BYTE:
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case I2C_SMBUS_BYTE_DATA:
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__entry->len = 1;
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goto copy;
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case I2C_SMBUS_WORD_DATA:
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case I2C_SMBUS_PROC_CALL:
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__entry->len = 2;
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goto copy;
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case I2C_SMBUS_BLOCK_DATA:
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case I2C_SMBUS_BLOCK_PROC_CALL:
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case I2C_SMBUS_I2C_BLOCK_DATA:
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__entry->len = data->block[0] + 1;
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copy:
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memcpy(__entry->buf, data->block, __entry->len);
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break;
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case I2C_SMBUS_QUICK:
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case I2C_SMBUS_I2C_BLOCK_BROKEN:
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default:
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__entry->len = 0;
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}
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),
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TP_printk("i2c-%d a=%03x f=%04x c=%x %s l=%u [%*phD]",
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__entry->adapter_nr,
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__entry->addr,
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__entry->flags,
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__entry->command,
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__print_symbolic(__entry->protocol,
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{ I2C_SMBUS_QUICK, "QUICK" },
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{ I2C_SMBUS_BYTE, "BYTE" },
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{ I2C_SMBUS_BYTE_DATA, "BYTE_DATA" },
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{ I2C_SMBUS_WORD_DATA, "WORD_DATA" },
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{ I2C_SMBUS_PROC_CALL, "PROC_CALL" },
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{ I2C_SMBUS_BLOCK_DATA, "BLOCK_DATA" },
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{ I2C_SMBUS_I2C_BLOCK_BROKEN, "I2C_BLOCK_BROKEN" },
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{ I2C_SMBUS_BLOCK_PROC_CALL, "BLOCK_PROC_CALL" },
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{ I2C_SMBUS_I2C_BLOCK_DATA, "I2C_BLOCK_DATA" }),
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__entry->len,
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__entry->len, __entry->buf
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));
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/*
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* i2c_smbus_xfer() result
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*/
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TRACE_EVENT(smbus_result,
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TP_PROTO(const struct i2c_adapter *adap,
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u16 addr, unsigned short flags,
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char read_write, u8 command, int protocol,
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int res),
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TP_ARGS(adap, addr, flags, read_write, command, protocol, res),
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TP_STRUCT__entry(
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__field(int, adapter_nr )
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__field(__u16, addr )
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__field(__u16, flags )
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__field(__u8, read_write )
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__field(__u8, command )
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__field(__s16, res )
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__field(__u32, protocol )
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),
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TP_fast_assign(
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__entry->adapter_nr = adap->nr;
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__entry->addr = addr;
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__entry->flags = flags;
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__entry->read_write = read_write;
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__entry->command = command;
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__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_I2C_H */
|
||
|
|
|
||
|
|
/* This part must be outside protection */
|
||
|
|
#include <trace/define_trace.h>
|