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Commit 66433b05 authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Greg Kroah-Hartman
Browse files

drivers/fsi: Add tracepoints for low-level operations 



Trace low level read and write FSI bus operations.

Signed-off-by: default avatarJeremy Kerr <jk@ozlabs.org>
Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
Signed-off-by: default avatarChristopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent da36cadf

drivers/fsi/fsi-core.c

+21 −6
Original line number Diff line number Diff line
@@ -23,6 +23,9 @@ 


#include "fsi-master.h"



#define CREATE_TRACE_POINTS

#include <trace/events/fsi.h>



#define FSI_SLAVE_CONF_NEXT_MASK	GENMASK(31, 31)

#define FSI_SLAVE_CONF_SLOTS_MASK	GENMASK(23, 16)

#define FSI_SLAVE_CONF_SLOTS_SHIFT	16
@@ -542,11 +545,16 @@ static int fsi_master_read(struct fsi_master *master, int link, 
{

	int rc;



	trace_fsi_master_read(master, link, slave_id, addr, size);



	rc = fsi_check_access(addr, size);

	if (rc)

		return rc;

	if (!rc)

		rc = master->read(master, link, slave_id, addr, val, size);



	trace_fsi_master_rw_result(master, link, slave_id, addr, size,

			false, val, rc);



	return master->read(master, link, slave_id, addr, val, size);

	return rc;

}



static int fsi_master_write(struct fsi_master *master, int link,
@@ -554,11 +562,16 @@ static int fsi_master_write(struct fsi_master *master, int link, 
{

	int rc;



	trace_fsi_master_write(master, link, slave_id, addr, size, val);



	rc = fsi_check_access(addr, size);

	if (rc)

		return rc;

	if (!rc)

		rc = master->write(master, link, slave_id, addr, val, size);



	return master->write(master, link, slave_id, addr, val, size);

	trace_fsi_master_rw_result(master, link, slave_id, addr, size,

			true, val, rc);



	return rc;

}



static int fsi_master_link_enable(struct fsi_master *master, int link)
@@ -574,6 +587,8 @@ static int fsi_master_link_enable(struct fsi_master *master, int link) 
 */

static int fsi_master_break(struct fsi_master *master, int link)

{

	trace_fsi_master_break(master, link);



	if (master->send_break)

		return master->send_break(master, link);

include/trace/events/fsi.h

0 → 100644
+127 −0
Original line number Diff line number Diff line 


#undef TRACE_SYSTEM

#define TRACE_SYSTEM fsi



#if !defined(_TRACE_FSI_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_FSI_H



#include <linux/tracepoint.h>



TRACE_EVENT(fsi_master_read,

	TP_PROTO(const struct fsi_master *master, int link, int id,

			uint32_t addr, size_t size),

	TP_ARGS(master, link, id, addr, size),

	TP_STRUCT__entry(

		__field(int,	master_idx)

		__field(int,	link)

		__field(int,	id)

		__field(__u32,	addr)

		__field(size_t,	size)

	),

	TP_fast_assign(

		__entry->master_idx = master->idx;

		__entry->link = link;

		__entry->id = id;

		__entry->addr = addr;

		__entry->size = size;

	),

	TP_printk("fsi%d:%02d:%02d %08x[%zd]",

		__entry->master_idx,

		__entry->link,

		__entry->id,

		__entry->addr,

		__entry->size

	)

);



TRACE_EVENT(fsi_master_write,

	TP_PROTO(const struct fsi_master *master, int link, int id,

			uint32_t addr, size_t size, const void *data),

	TP_ARGS(master, link, id, addr, size, data),

	TP_STRUCT__entry(

		__field(int,	master_idx)

		__field(int,	link)

		__field(int,	id)

		__field(__u32,	addr)

		__field(size_t,	size)

		__field(__u32,	data)

	),

	TP_fast_assign(

		__entry->master_idx = master->idx;

		__entry->link = link;

		__entry->id = id;

		__entry->addr = addr;

		__entry->size = size;

		__entry->data = 0;

		memcpy(&__entry->data, data, size);

	),

	TP_printk("fsi%d:%02d:%02d %08x[%zd] <= {%*ph}",

		__entry->master_idx,

		__entry->link,

		__entry->id,

		__entry->addr,

		__entry->size,

		(int)__entry->size, &__entry->data

	)

);



TRACE_EVENT(fsi_master_rw_result,

	TP_PROTO(const struct fsi_master *master, int link, int id,

			uint32_t addr, size_t size,

			bool write, const void *data, int ret),

	TP_ARGS(master, link, id, addr, size, write, data, ret),

	TP_STRUCT__entry(

		__field(int,	master_idx)

		__field(int,	link)

		__field(int,	id)

		__field(__u32,	addr)

		__field(size_t,	size)

		__field(bool,	write)

		__field(__u32,	data)

		__field(int,	ret)

	),

	TP_fast_assign(

		__entry->master_idx = master->idx;

		__entry->link = link;

		__entry->id = id;

		__entry->addr = addr;

		__entry->size = size;

		__entry->write = write;

		__entry->data = 0;

		__entry->ret = ret;

		if (__entry->write || !__entry->ret)

			memcpy(&__entry->data, data, size);

	),

	TP_printk("fsi%d:%02d:%02d %08x[%zd] %s {%*ph} ret %d",

		__entry->master_idx,

		__entry->link,

		__entry->id,

		__entry->addr,

		__entry->size,

		__entry->write ? "<=" : "=>",

		(int)__entry->size, &__entry->data,

		__entry->ret

	)

);



TRACE_EVENT(fsi_master_break,

	TP_PROTO(const struct fsi_master *master, int link),

	TP_ARGS(master, link),

	TP_STRUCT__entry(

		__field(int,	master_idx)

		__field(int,	link)

	),

	TP_fast_assign(

		__entry->master_idx = master->idx;

		__entry->link = link;

	),

	TP_printk("fsi%d:%d",

		__entry->master_idx,

		__entry->link

	)

);





#endif /* _TRACE_FSI_H */



#include <trace/define_trace.h>