diff options
Diffstat (limited to 'Documentation/ABI/stable')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-block | 49 | ||||
| -rw-r--r-- | Documentation/ABI/stable/sysfs-devices-system-cpu | 4 | ||||
| -rw-r--r-- | Documentation/ABI/stable/sysfs-driver-firmware-zynqmp | 141 |
3 files changed, 194 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 8dd3e84a8aad..e8797cd09aff 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -155,6 +155,55 @@ Description: last zone of the device which may be smaller. +What: /sys/block/<disk>/queue/crypto/ +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + The presence of this subdirectory of /sys/block/<disk>/queue/ + indicates that the device supports inline encryption. This + subdirectory contains files which describe the inline encryption + capabilities of the device. For more information about inline + encryption, refer to Documentation/block/inline-encryption.rst. + + +What: /sys/block/<disk>/queue/crypto/max_dun_bits +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] This file shows the maximum length, in bits, of data unit + numbers accepted by the device in inline encryption requests. + + +What: /sys/block/<disk>/queue/crypto/modes/<mode> +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] For each crypto mode (i.e., encryption/decryption + algorithm) the device supports with inline encryption, a file + will exist at this location. It will contain a hexadecimal + number that is a bitmask of the supported data unit sizes, in + bytes, for that crypto mode. + + Currently, the crypto modes that may be supported are: + + * AES-256-XTS + * AES-128-CBC-ESSIV + * Adiantum + + For example, if a device supports AES-256-XTS inline encryption + with data unit sizes of 512 and 4096 bytes, the file + /sys/block/<disk>/queue/crypto/modes/AES-256-XTS will exist and + will contain "0x1200". + + +What: /sys/block/<disk>/queue/crypto/num_keyslots +Date: February 2022 +Contact: linux-block@vger.kernel.org +Description: + [RO] This file shows the number of keyslots the device has for + use with inline encryption. + + What: /sys/block/<disk>/queue/dax Date: June 2016 Contact: linux-block@vger.kernel.org diff --git a/Documentation/ABI/stable/sysfs-devices-system-cpu b/Documentation/ABI/stable/sysfs-devices-system-cpu index 3965ce504484..902392d7eddf 100644 --- a/Documentation/ABI/stable/sysfs-devices-system-cpu +++ b/Documentation/ABI/stable/sysfs-devices-system-cpu @@ -86,6 +86,10 @@ What: /sys/devices/system/cpu/cpuX/topology/die_cpus Description: internal kernel map of CPUs within the same die. Values: hexadecimal bitmask. +What: /sys/devices/system/cpu/cpuX/topology/ppin +Description: per-socket protected processor inventory number +Values: hexadecimal. + What: /sys/devices/system/cpu/cpuX/topology/die_cpus_list Description: human-readable list of CPUs within the same die. The format is like 0-3, 8-11, 14,17. diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp index f5724bb5b462..c3fec3c835af 100644 --- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp +++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp @@ -113,3 +113,144 @@ Description: # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status Users: Xilinx + +What: /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id +Date: Feb 2022 +KernelVersion: 5.18 +Contact: "Ronak Jain" <ronak.jain@xilinx.com> +Description: + This sysfs interface allows user to configure features at + runtime. The user can enable or disable features running at + firmware as well as the user can configure the parameters of + the features at runtime. The supported features are over + temperature and external watchdog. Here, the external watchdog + is completely different than the /dev/watchdog as the external + watchdog is running on the firmware and it is used to monitor + the health of firmware not APU(Linux). Also, the external + watchdog is interfaced outside of the zynqmp soc. + + The supported config ids are for the feature configuration is, + 1. PM_FEATURE_OVERTEMP_STATUS = 1, the user can enable or + disable the over temperature feature. + 2. PM_FEATURE_OVERTEMP_VALUE = 2, the user can configure the + over temperature limit in Degree Celsius. + 3. PM_FEATURE_EXTWDT_STATUS = 3, the user can enable or disable + the external watchdog feature. + 4. PM_FEATURE_EXTWDT_VALUE = 4, the user can configure the + external watchdog feature. + + Usage: + + Select over temperature config ID to enable/disable feature + # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + + Check over temperature config ID is selected or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + The expected result is 1. + + Select over temperature config ID to configure OT limit + # echo 2 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + + Check over temperature config ID is selected or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + The expected result is 2. + + Select external watchdog config ID to enable/disable feature + # echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + + Check external watchdog config ID is selected or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + The expected result is 3. + + Select external watchdog config ID to configure time interval + # echo 4 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + + Check external watchdog config ID is selected or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + The expected result is 4. + +Users: Xilinx + +What: /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value +Date: Feb 2022 +KernelVersion: 5.18 +Contact: "Ronak Jain" <ronak.jain@xilinx.com> +Description: + This sysfs interface allows to configure features at runtime. + The user can enable or disable features running at firmware. + Also, the user can configure the parameters of the features + at runtime. The supported features are over temperature and + external watchdog. Here, the external watchdog is completely + different than the /dev/watchdog as the external watchdog is + running on the firmware and it is used to monitor the health + of firmware not APU(Linux). Also, the external watchdog is + interfaced outside of the zynqmp soc. + + By default the features are disabled in the firmware. The user + can enable features by querying appropriate config id of the + features. + + The default limit for the over temperature is 90 Degree Celsius. + The default timer interval for the external watchdog is 570ms. + + The supported config ids are for the feature configuration is, + 1. PM_FEATURE_OVERTEMP_STATUS = 1, the user can enable or + disable the over temperature feature. + 2. PM_FEATURE_OVERTEMP_VALUE = 2, the user can configure the + over temperature limit in Degree Celsius. + 3. PM_FEATURE_EXTWDT_STATUS = 3, the user can enable or disable + the external watchdog feature. + 4. PM_FEATURE_EXTWDT_VALUE = 4, the user can configure the + external watchdog feature. + + Usage: + + Enable over temperature feature + # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + + Check whether the over temperature feature is enabled or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + The expected result is 1. + + Disable over temperature feature + # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + + Check whether the over temperature feature is disabled or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + The expected result is 0. + + Configure over temperature limit to 50 Degree Celsius + # echo 2 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + # echo 50 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + + Check whether the over temperature limit is configured or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + The expected result is 50. + + Enable external watchdog feature + # echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + # echo 1 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + + Check whether the external watchdog feature is enabled or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + The expected result is 1. + + Disable external watchdog feature + # echo 3 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + + Check whether the external watchdog feature is disabled or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + The expected result is 0. + + Configure external watchdog timer interval to 500ms + # echo 4 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id + # echo 500 > /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + + Check whether the external watchdog timer interval is configured or not + # cat /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value + The expected result is 500. + +Users: Xilinx |