Hi Qi,
On 26.05.2022 5:56, liuqi (BA) wrote:
Hi Alexei,
On 2022/5/25 23:10, Alexei Budankov wrote:
Hi Qi Liu,
On 13.08.2020 15:59, Qi Liu wrote:
Add ETMv4 periperhal ID for HiSilicon Hip08 and Hip09 platform. Hip08
contains ETMv4.2 device and Hip09 contains ETMv4.5 device.
Signed-off-by: Qi Liu <liuqi115@xxxxxxxxxx>
---
drivers/hwtracing/coresight/coresight-etm4x.c | 2 ++
1 file changed, 2 insertions(+)
Thanks for your patch.
I would like to test HiSilicon ETM device feature on
Kunpeng 920 based server.
I applied the patch and booted the kernel with the changes.
However I don't see any device files neither here:
/sys/bus/coresight/devices/
Thanks for your test :)
Thanks for quick reply. Appreciate it much. :)
Kunpeng 920 platform(Non-PG) support tracing CPU instruction, source device is coresight ETM, link device is coresight funnel and sink device is ultrasoc SMB. So you need to insmod coresight-* driver and SMB driver, which patch is :
Add support for UltraSoc System Memory Buffer
https://lore.kernel.org/linux-arm-kernel/20220416083953.52610-1-liuqi115@xxxxxxxxxx/
I will try it shortly and let you know.
by the way, can you help to check /sys/bus/amba/devices/, and make sure that the firmware of your board has supported ETM, funnel and SMB devices?
Here we go:
huawei@armubuntu:~$ pwd
/home/huawei
huawei@armubuntu:~$ ls /sys/bus/amba/devices/
huawei@armubuntu:~$
Look like our server firmware should be upgraded, right?
Your help and support is greatly appreciated.
> Thanks,
Alexei
.
Thanks,
Qi
nor here:
/sys/bus/event_source/devices/cs_etm/sinks/
What should a user expect new in os with this patch added?
Thanks,
Alexei
.
.
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index 6d7d216..7797a57 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -1587,6 +1587,8 @@ static const struct amba_id etm4_ids[] = {
CS_AMBA_UCI_ID(0x000bb805, uci_id_etm4),/* Qualcomm Kryo 4XX Cortex-A55 */
CS_AMBA_UCI_ID(0x000bb804, uci_id_etm4),/* Qualcomm Kryo 4XX Cortex-A76 */
CS_AMBA_UCI_ID(0x000cc0af, uci_id_etm4),/* Marvell ThunderX2 */
+ CS_AMBA_UCI_ID(0x000b6d01, uci_id_etm4),/* HiSilicon-Hip08 */
+ CS_AMBA_UCI_ID(0x000b6d02, uci_id_etm4),/* HiSilicon-Hip09 */
{},
};
--
2.8.1