diff options
Diffstat (limited to 'kernel/include/trace/events/i2c.h')
| -rw-r--r-- | kernel/include/trace/events/i2c.h | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/kernel/include/trace/events/i2c.h b/kernel/include/trace/events/i2c.h new file mode 100644 index 000000000..fe17187df --- /dev/null +++ b/kernel/include/trace/events/i2c.h @@ -0,0 +1,372 @@ +/* I2C and 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 i2c + +#if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_I2C_H + +#include <linux/i2c.h> +#include <linux/tracepoint.h> + +/* + * drivers/i2c/i2c-core.c + */ +extern void i2c_transfer_trace_reg(void); +extern void i2c_transfer_trace_unreg(void); + +/* + * __i2c_transfer() write request + */ +TRACE_EVENT_FN(i2c_write, + TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, + int num), + TP_ARGS(adap, msg, num), + TP_STRUCT__entry( + __field(int, adapter_nr ) + __field(__u16, msg_nr ) + __field(__u16, addr ) + __field(__u16, flags ) + __field(__u16, len ) + __dynamic_array(__u8, buf, msg->len) ), + TP_fast_assign( + __entry->adapter_nr = adap->nr; + __entry->msg_nr = num; + __entry->addr = msg->addr; + __entry->flags = msg->flags; + __entry->len = msg->len; + memcpy(__get_dynamic_array(buf), msg->buf, msg->len); + ), + TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", + __entry->adapter_nr, + __entry->msg_nr, + __entry->addr, + __entry->flags, + __entry->len, + __entry->len, __get_dynamic_array(buf) + ), + i2c_transfer_trace_reg, + i2c_transfer_trace_unreg); + +/* + * __i2c_transfer() read request + */ +TRACE_EVENT_FN(i2c_read, + TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, + int num), + TP_ARGS(adap, msg, num), + TP_STRUCT__entry( + __field(int, adapter_nr ) + __field(__u16, msg_nr ) + __field(__u16, addr ) + __field(__u16, flags ) + __field(__u16, len ) + ), + TP_fast_assign( + __entry->adapter_nr = adap->nr; + __entry->msg_nr = num; + __entry->addr = msg->addr; + __entry->flags = msg->flags; + __entry->len = msg->len; + ), + TP_printk("i2c-%d #%u a=%03x f=%04x l=%u", + __entry->adapter_nr, + __entry->msg_nr, + __entry->addr, + __entry->flags, + __entry->len + ), + i2c_transfer_trace_reg, + i2c_transfer_trace_unreg); + +/* + * __i2c_transfer() read reply + */ +TRACE_EVENT_FN(i2c_reply, + TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg, + int num), + TP_ARGS(adap, msg, num), + TP_STRUCT__entry( + __field(int, adapter_nr ) + __field(__u16, msg_nr ) + __field(__u16, addr ) + __field(__u16, flags ) + __field(__u16, len ) + __dynamic_array(__u8, buf, msg->len) ), + TP_fast_assign( + __entry->adapter_nr = adap->nr; + __entry->msg_nr = num; + __entry->addr = msg->addr; + __entry->flags = msg->flags; + __entry->len = msg->len; + memcpy(__get_dynamic_array(buf), msg->buf, msg->len); + ), + TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]", + __entry->adapter_nr, + __entry->msg_nr, + __entry->addr, + __entry->flags, + __entry->len, + __entry->len, __get_dynamic_array(buf) + ), + i2c_transfer_trace_reg, + i2c_transfer_trace_unreg); + +/* + * __i2c_transfer() result + */ +TRACE_EVENT_FN(i2c_result, + TP_PROTO(const struct i2c_adapter *adap, int num, int ret), + TP_ARGS(adap, num, ret), + TP_STRUCT__entry( + __field(int, adapter_nr ) + __field(__u16, nr_msgs ) + __field(__s16, ret ) + ), + TP_fast_assign( + __entry->adapter_nr = adap->nr; + __entry->nr_msgs = num; + __entry->ret = ret; + ), + TP_printk("i2c-%d n=%u ret=%d", + __entry->adapter_nr, + __entry->nr_msgs, + __entry->ret + ), + i2c_transfer_trace_reg, + i2c_transfer_trace_unreg); + +/* + * 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_I2C_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |