This set enables hardware rate limiting capabilities on QAT 4xxx accelerators. Rate Limiting allows to control the rate of the requests that can be submitted to a ring pair (RP). This allows sharing a QAT device among multiple users while ensuring guaranteed throughput. The driver provides a mechanism that allows users to set policies, through a sysfs interface, that are then programmed to the device. The device is then enforcing the policies. The first six commits are refactoring and additions in preparation for the feature. Patch #6 introduces a mechanism for retrieving firmware feature capabilities. Patch #8 implements the core of the rate limiting feature by providing mechanisms to set rate limiting policies (aka SLAs). The final three commits add the required sysfs interface that allow users to configure SLAs. Changes since v1: - Removed unnecessary check - Simplified a few error paths - Reduced a few local variables - Fixed repeated error message - Moved mutex lock above sla_id existence check. - Added Reviewed-by tag from Tero Kristo received from an internal review of the set. Ciunas Bennett (3): crypto: qat - add rate limiting sysfs interface crypto: qat - add rp2svc sysfs attribute crypto: qat - add num_rps sysfs attribute Damian Muszynski (4): units: Add BYTES_PER_*BIT crypto: qat - add bits.h to icp_qat_hw.h crypto: qat - add retrieval of fw capabilities crypto: qat - add rate limiting feature to qat_4xxx Giovanni Cabiddu (4): crypto: qat - refactor fw config related functions crypto: qat - use masks for AE groups crypto: qat - fix ring to service map for QAT GEN4 crypto: qat - move admin api Documentation/ABI/testing/sysfs-driver-qat | 46 + Documentation/ABI/testing/sysfs-driver-qat_rl | 227 ++++ .../intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 190 ++- .../intel/qat/qat_4xxx/adf_4xxx_hw_data.h | 13 +- .../intel/qat/qat_c3xxx/adf_c3xxx_hw_data.c | 1 + .../intel/qat/qat_c62x/adf_c62x_hw_data.c | 1 + drivers/crypto/intel/qat/qat_common/Makefile | 3 + .../intel/qat/qat_common/adf_accel_devices.h | 11 + .../crypto/intel/qat/qat_common/adf_admin.c | 71 + .../crypto/intel/qat/qat_common/adf_admin.h | 27 + .../crypto/intel/qat/qat_common/adf_clock.c | 1 + .../intel/qat/qat_common/adf_cnv_dbgfs.c | 1 + .../intel/qat/qat_common/adf_common_drv.h | 10 - .../intel/qat/qat_common/adf_fw_counters.c | 1 + .../intel/qat/qat_common/adf_gen4_hw_data.h | 7 + .../crypto/intel/qat/qat_common/adf_gen4_pm.c | 1 + .../qat/qat_common/adf_gen4_pm_debugfs.c | 1 + .../intel/qat/qat_common/adf_gen4_timer.c | 1 + .../intel/qat/qat_common/adf_heartbeat.c | 1 + .../qat/qat_common/adf_heartbeat_dbgfs.c | 1 + .../crypto/intel/qat/qat_common/adf_init.c | 13 + drivers/crypto/intel/qat/qat_common/adf_rl.c | 1169 +++++++++++++++++ drivers/crypto/intel/qat/qat_common/adf_rl.h | 176 +++ .../intel/qat/qat_common/adf_rl_admin.c | 97 ++ .../intel/qat/qat_common/adf_rl_admin.h | 18 + .../crypto/intel/qat/qat_common/adf_sysfs.c | 80 ++ .../intel/qat/qat_common/adf_sysfs_rl.c | 451 +++++++ .../intel/qat/qat_common/adf_sysfs_rl.h | 11 + .../qat/qat_common/icp_qat_fw_init_admin.h | 41 + .../crypto/intel/qat/qat_common/icp_qat_hw.h | 2 + .../qat/qat_dh895xcc/adf_dh895xcc_hw_data.c | 1 + include/linux/units.h | 4 + 32 files changed, 2605 insertions(+), 73 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-driver-qat_rl create mode 100644 drivers/crypto/intel/qat/qat_common/adf_admin.h create mode 100644 drivers/crypto/intel/qat/qat_common/adf_rl.c create mode 100644 drivers/crypto/intel/qat/qat_common/adf_rl.h create mode 100644 drivers/crypto/intel/qat/qat_common/adf_rl_admin.c create mode 100644 drivers/crypto/intel/qat/qat_common/adf_rl_admin.h create mode 100644 drivers/crypto/intel/qat/qat_common/adf_sysfs_rl.c create mode 100644 drivers/crypto/intel/qat/qat_common/adf_sysfs_rl.h base-commit: 1bb03421eab67940b6509fe0869ff43df5fbe3e6 -- 2.34.1
