diff options
121 files changed, 1878 insertions, 4561 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index e487f969a15e..0c7efaf62de0 100644 --- a/Documentation/ABI/testing/sysfs-driver-ufs +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -1437,180 +1437,6 @@ Description: If avail_wb_buff < wb_flush_threshold, it indicates that WriteBooster buffer needs to be flushed, otherwise it is not necessary. -What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_version -What: /sys/bus/platform/devices/*.ufs/device_descriptor/hpb_version -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the HPB specification version. - The full information about the descriptor can be found in the UFS - HPB (Host Performance Booster) Extension specifications. - Example: version 1.2.3 = 0123h - - The file is read only. - -What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/hpb_control -What: /sys/bus/platform/devices/*.ufs/device_descriptor/hpb_control -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows an indication of the HPB control mode. - 00h: Host control mode - 01h: Device control mode - - The file is read only. - -What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_region_size -What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_region_size -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the bHPBRegionSize which can be calculated - as in the following (in bytes): - HPB Region size = 512B * 2^bHPBRegionSize - - The file is read only. - -What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_number_lu -What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_number_lu -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the maximum number of HPB LU supported by - the device. - 00h: HPB is not supported by the device. - 01h ~ 20h: Maximum number of HPB LU supported by the device - - The file is read only. - -What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_subregion_size -What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_subregion_size -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the bHPBSubRegionSize, which can be - calculated as in the following (in bytes) and shall be a multiple of - logical block size: - HPB Sub-Region size = 512B x 2^bHPBSubRegionSize - bHPBSubRegionSize shall not exceed bHPBRegionSize. - - The file is read only. - -What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/hpb_max_active_regions -What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/hpb_max_active_regions -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the maximum number of active HPB regions that - is supported by the device. - - The file is read only. - -What: /sys/class/scsi_device/*/device/unit_descriptor/hpb_lu_max_active_regions -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the maximum number of HPB regions assigned to - the HPB logical unit. - - The file is read only. - -What: /sys/class/scsi_device/*/device/unit_descriptor/hpb_pinned_region_start_offset -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the start offset of HPB pinned region. - - The file is read only. - -What: /sys/class/scsi_device/*/device/unit_descriptor/hpb_number_pinned_regions -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the number of HPB pinned regions assigned to - the HPB logical unit. - - The file is read only. - -What: /sys/class/scsi_device/*/device/hpb_stats/hit_cnt -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the number of reads that changed to HPB read. - - The file is read only. - -What: /sys/class/scsi_device/*/device/hpb_stats/miss_cnt -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the number of reads that cannot be changed to - HPB read. - - The file is read only. - -What: /sys/class/scsi_device/*/device/hpb_stats/rcmd_noti_cnt -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: This entry shows the number of response UPIUs that has - recommendations for activating sub-regions and/or inactivating region. - - The file is read only. - -What: /sys/class/scsi_device/*/device/hpb_stats/rcmd_active_cnt -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: For the HPB device control mode, this entry shows the number of - active sub-regions recommended by response UPIUs. For the HPB host control - mode, this entry shows the number of active sub-regions recommended by the - HPB host control mode heuristic algorithm. - - The file is read only. - -What: /sys/class/scsi_device/*/device/hpb_stats/rcmd_inactive_cnt -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> -Description: For the HPB device control mode, this entry shows the number of - inactive regions recommended by response UPIUs. For the HPB host control - mode, this entry shows the number of inactive regions recommended by the - HPB host control mode heuristic algorithm. - - The file is read only. - -What: /sys/class/scsi_device/*/device/hpb_stats/map_req_cnt -Date: June 2021 -Contact: Daejun Park <daejun7.park@samsung.com> |