[PATCH linux dev-5.3 2/2] fsi: aspeed: Add trace when error occurs
Joel Stanley
joel at jms.id.au
Tue Oct 15 00:21:40 AEDT 2019
This prints out three registers in the FSI master when an error occurs.
Signed-off-by: Joel Stanley <joel at jms.id.au>
---
drivers/fsi/fsi-master-aspeed.c | 7 +++++++
include/trace/events/fsi_master_aspeed.h | 18 ++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index d796c4012875..66657b7848de 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -251,6 +251,13 @@ static int opb_read(void __iomem *base, uint32_t addr, size_t size, u32 *out)
static int check_errors(struct fsi_master_aspeed *aspeed, int err)
{
int ret;
+ u32 mresp0, mstap0, mesrb0;
+
+ opb_read(aspeed->base, ctrl_base + FSI_MRESP0, 4, &mresp0);
+ opb_read(aspeed->base, ctrl_base + FSI_MSTAP0, 4, &mstap0);
+ opb_read(aspeed->base, ctrl_base + FSI_MESRB0, 4, &mesrb0);
+
+ trace_fsi_master_aspeed_opb_error(mresp0, mstap0, mesrb0);
if (err == -EIO) {
/* Check MAEB (0x70) ? */
diff --git a/include/trace/events/fsi_master_aspeed.h b/include/trace/events/fsi_master_aspeed.h
index 63b9ce7f0de6..8e47637c5fb7 100644
--- a/include/trace/events/fsi_master_aspeed.h
+++ b/include/trace/events/fsi_master_aspeed.h
@@ -54,6 +54,24 @@ TRACE_EVENT(fsi_master_aspeed_opb_write,
)
);
+TRACE_EVENT(fsi_master_aspeed_opb_error,
+ TP_PROTO(uint32_t mresp0, uint32_t mstap0, uint32_t mesrb0),
+ TP_ARGS(mresp0, mstap0, mesrb0),
+ TP_STRUCT__entry(
+ __field(uint32_t, mresp0)
+ __field(uint32_t, mstap0)
+ __field(uint32_t, mesrb0)
+ ),
+ TP_fast_assign(
+ __entry->mresp0 = mresp0;
+ __entry->mstap0 = mstap0;
+ __entry->mesrb0 = mesrb0;
+ ),
+ TP_printk("mresp0 %08x mstap0 %08x mesrb0 %08x",
+ __entry->mresp0, __entry->mstap0, __entry->mesrb0
+ )
+ );
+
#endif
#include <trace/define_trace.h>
--
2.23.0
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