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drivers/fsi: Add tracepoints for low-level operations

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Trace low level read and write FSI bus operations.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeremy Kerr
2017-06-06 16:08:51 -05:00
committed by Greg Kroah-Hartman
parent da36cadf89
commit 66433b05a3
2 changed files with 150 additions and 8 deletions
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31
drivers/fsi/fsi-core.c
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@@ -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;
rc = fsi_check_access(addr, size);
if (rc)
return rc;
trace_fsi_master_read(master, link, slave_id, addr, size);
return master->read(master, link, slave_id, addr, val, size);
rc = fsi_check_access(addr, size);
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 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;
rc = fsi_check_access(addr, size);
if (rc)
return rc;
trace_fsi_master_write(master, link, slave_id, addr, size, val);
return master->write(master, link, slave_id, addr, val, size);
rc = fsi_check_access(addr, size);
if (!rc)
rc = 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);