| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune |
| Date: October 2022 |
| KernelVersion: 6.1 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: This directory contains files for tuning the PCIe link |
| parameters(events). Each file is named after the event |
| of the PCIe link. |
| |
| See Documentation/trace/hisi-ptt.rst for more information. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_cpl |
| Date: October 2022 |
| KernelVersion: 6.1 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (RW) Controls the weight of Tx completion TLPs, which influence |
| the proportion of outbound completion TLPs on the PCIe link. |
| The available tune data is [0, 1, 2]. Writing a negative value |
| will return an error, and out of range values will be converted |
| to 2. The value indicates a probable level of the event. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_np |
| Date: October 2022 |
| KernelVersion: 6.1 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (RW) Controls the weight of Tx non-posted TLPs, which influence |
| the proportion of outbound non-posted TLPs on the PCIe link. |
| The available tune data is [0, 1, 2]. Writing a negative value |
| will return an error, and out of range values will be converted |
| to 2. The value indicates a probable level of the event. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/qos_tx_p |
| Date: October 2022 |
| KernelVersion: 6.1 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (RW) Controls the weight of Tx posted TLPs, which influence the |
| proportion of outbound posted TLPs on the PCIe link. |
| The available tune data is [0, 1, 2]. Writing a negative value |
| will return an error, and out of range values will be converted |
| to 2. The value indicates a probable level of the event. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/rx_alloc_buf_level |
| Date: October 2022 |
| KernelVersion: 6.1 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (RW) Control the allocated buffer watermark for inbound packets. |
| The packets will be stored in the buffer first and then transmitted |
| either when the watermark reached or when timed out. |
| The available tune data is [0, 1, 2]. Writing a negative value |
| will return an error, and out of range values will be converted |
| to 2. The value indicates a probable level of the event. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/tune/tx_alloc_buf_level |
| Date: October 2022 |
| KernelVersion: 6.1 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (RW) Control the allocated buffer watermark of outbound packets. |
| The packets will be stored in the buffer first and then transmitted |
| either when the watermark reached or when timed out. |
| The available tune data is [0, 1, 2]. Writing a negative value |
| will return an error, and out of range values will be converted |
| to 2. The value indicates a probable level of the event. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters |
| Date: May 2023 |
| KernelVersion: 6.5 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: This directory contains the files providing the PCIe Root Port filters |
| information used for PTT trace. Each file is named after the supported |
| Root Port device name <domain>:<bus>:<device>.<function>. |
| |
| See the description of the "filter" in Documentation/trace/hisi-ptt.rst |
| for more information. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/multiselect |
| Date: May 2023 |
| KernelVersion: 6.5 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (Read) Indicates if this kind of filter can be selected at the same |
| time as others filters, or must be used on it's own. 1 indicates |
| the former case and 0 indicates the latter. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/root_port_filters/<bdf> |
| Date: May 2023 |
| KernelVersion: 6.5 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (Read) Indicates the filter value of this Root Port filter, which |
| can be used to control the TLP headers to trace by the PTT trace. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters |
| Date: May 2023 |
| KernelVersion: 6.5 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: This directory contains the files providing the PCIe Requester filters |
| information used for PTT trace. Each file is named after the supported |
| Endpoint device name <domain>:<bus>:<device>.<function>. |
| |
| See the description of the "filter" in Documentation/trace/hisi-ptt.rst |
| for more information. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/multiselect |
| Date: May 2023 |
| KernelVersion: 6.5 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (Read) Indicates if this kind of filter can be selected at the same |
| time as others filters, or must be used on it's own. 1 indicates |
| the former case and 0 indicates the latter. |
| |
| What: /sys/devices/hisi_ptt<sicl_id>_<core_id>/requester_filters/<bdf> |
| Date: May 2023 |
| KernelVersion: 6.5 |
| Contact: Yicong Yang <yangyicong@hisilicon.com> |
| Description: (Read) Indicates the filter value of this Requester filter, which |
| can be used to control the TLP headers to trace by the PTT trace. |
