1What: /sys/bus/coresight/devices/ultra_smb<N>/enable_sink 2Date: January 2023 3KernelVersion: 6.3 4Contact: Junhao He <hejunhao3@huawei.com> 5Description: (RW) Add/remove a SMB device from a trace path. There can be 6 multiple sources for a single SMB device. 7 8What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_size 9Date: January 2023 10KernelVersion: 6.3 11Contact: Junhao He <hejunhao3@huawei.com> 12Description: (RO) Shows the buffer size of each UltraSoc SMB device. 13 14What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/buf_status 15Date: January 2023 16KernelVersion: 6.3 17Contact: Junhao He <hejunhao3@huawei.com> 18Description: (RO) Shows the value of UltraSoc SMB status register. 19 BIT(0) is zero means buffer is empty. 20 21What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/read_pos 22Date: January 2023 23KernelVersion: 6.3 24Contact: Junhao He <hejunhao3@huawei.com> 25Description: (RO) Shows the value of UltraSoc SMB Read Pointer register. 26 27What: /sys/bus/coresight/devices/ultra_smb<N>/mgmt/write_pos 28Date: January 2023 29KernelVersion: 6.3 30Contact: Junhao He <hejunhao3@huawei.com> 31Description: (RO) Shows the value of UltraSoc SMB Write Pointer register. 32