From a95521531619945cba526da0a8241e43a18bade3 Mon Sep 17 00:00:00 2001 From: Suman Kumar Chakraborty Date: Thu, 10 Jul 2025 14:33:44 +0100 Subject: [PATCH] crypto: qat - add adf_rl_get_num_svc_aes() in rate limiting Enhance the rate limiting (RL) infrastructure by adding adf_rl_get_num_svc_aes() which can be used to fetch the number of engines associated with the service type. Expand the structure adf_rl_hw_data with an array that contains the number of AEs per service. Implement adf_gen4_init_num_svc_aes() for QAT GEN4 devices to calculate the total number of acceleration engines dedicated to a specific service. Signed-off-by: Suman Kumar Chakraborty Reviewed-by: Giovanni Cabiddu Signed-off-by: Herbert Xu --- .../intel/qat/qat_420xx/adf_420xx_hw_data.c | 2 ++ .../intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 2 ++ .../intel/qat/qat_common/adf_gen4_hw_data.c | 22 +++++++++++++++++++ .../intel/qat/qat_common/adf_gen4_hw_data.h | 1 + drivers/crypto/intel/qat/qat_common/adf_rl.c | 13 ++++++++++- drivers/crypto/intel/qat/qat_common/adf_rl.h | 1 + 6 files changed, 40 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c b/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c index 32bb9e1826d20..67a1c1d8e23ea 100644 --- a/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c +++ b/drivers/crypto/intel/qat/qat_420xx/adf_420xx_hw_data.c @@ -301,6 +301,8 @@ static void adf_init_rl_data(struct adf_rl_hw_data *rl_data) rl_data->max_tp[SVC_DC] = ADF_420XX_RL_MAX_TP_DC; rl_data->scan_interval = ADF_420XX_RL_SCANS_PER_SEC; rl_data->scale_ref = ADF_420XX_RL_SLICE_REF; + + adf_gen4_init_num_svc_aes(rl_data); } static int get_rp_group(struct adf_accel_dev *accel_dev, u32 ae_mask) diff --git a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c index f917cc9db09d5..9b728dba048b5 100644 --- a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c +++ b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c @@ -227,6 +227,8 @@ static void adf_init_rl_data(struct adf_rl_hw_data *rl_data) rl_data->max_tp[SVC_DC] = ADF_4XXX_RL_MAX_TP_DC; rl_data->scan_interval = ADF_4XXX_RL_SCANS_PER_SEC; rl_data->scale_ref = ADF_4XXX_RL_SLICE_REF; + + adf_gen4_init_num_svc_aes(rl_data); } static u32 uof_get_num_objs(struct adf_accel_dev *accel_dev) diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c index 3103755e416e7..5e4b45c3fabef 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c +++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.c @@ -558,3 +558,25 @@ void adf_gen4_init_dc_ops(struct adf_dc_ops *dc_ops) dc_ops->build_decomp_block = adf_gen4_build_decomp_block; } EXPORT_SYMBOL_GPL(adf_gen4_init_dc_ops); + +void adf_gen4_init_num_svc_aes(struct adf_rl_hw_data *device_data) +{ + struct adf_hw_device_data *hw_data; + unsigned int i; + u32 ae_cnt; + + hw_data = container_of(device_data, struct adf_hw_device_data, rl_data); + ae_cnt = hweight32(hw_data->get_ae_mask(hw_data)); + if (!ae_cnt) + return; + + for (i = 0; i < SVC_BASE_COUNT; i++) + device_data->svc_ae_mask[i] = ae_cnt - 1; + + /* + * The decompression service is not supported on QAT GEN4 devices. + * Therefore, set svc_ae_mask to 0. + */ + device_data->svc_ae_mask[SVC_DECOMP] = 0; +} +EXPORT_SYMBOL_GPL(adf_gen4_init_num_svc_aes); diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h index 7f2b9cb0fe609..7fa203071c012 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h +++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_hw_data.h @@ -175,5 +175,6 @@ void adf_gen4_bank_drain_finish(struct adf_accel_dev *accel_dev, u32 bank_number); bool adf_gen4_services_supported(unsigned long service_mask); void adf_gen4_init_dc_ops(struct adf_dc_ops *dc_ops); +void adf_gen4_init_num_svc_aes(struct adf_rl_hw_data *device_data); #endif diff --git a/drivers/crypto/intel/qat/qat_common/adf_rl.c b/drivers/crypto/intel/qat/qat_common/adf_rl.c index 9269755397409..77465ab6702c3 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_rl.c +++ b/drivers/crypto/intel/qat/qat_common/adf_rl.c @@ -552,6 +552,17 @@ u32 adf_rl_calculate_slice_tokens(struct adf_accel_dev *accel_dev, u32 sla_val, return allocated_tokens; } +static u32 adf_rl_get_num_svc_aes(struct adf_accel_dev *accel_dev, + enum adf_base_services svc) +{ + struct adf_rl_hw_data *device_data = &accel_dev->hw_device->rl_data; + + if (svc >= SVC_BASE_COUNT) + return 0; + + return device_data->svc_ae_mask[svc]; +} + u32 adf_rl_calculate_ae_cycles(struct adf_accel_dev *accel_dev, u32 sla_val, enum adf_base_services svc_type) { @@ -563,7 +574,7 @@ u32 adf_rl_calculate_ae_cycles(struct adf_accel_dev *accel_dev, u32 sla_val, return 0; avail_ae_cycles = hw_data->clock_frequency; - avail_ae_cycles *= hw_data->get_num_aes(hw_data) - 1; + avail_ae_cycles *= adf_rl_get_num_svc_aes(accel_dev, svc_type); do_div(avail_ae_cycles, device_data->scan_interval); sla_val *= device_data->max_tp[svc_type]; diff --git a/drivers/crypto/intel/qat/qat_common/adf_rl.h b/drivers/crypto/intel/qat/qat_common/adf_rl.h index dee7f0c819060..59f8859161577 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_rl.h +++ b/drivers/crypto/intel/qat/qat_common/adf_rl.h @@ -89,6 +89,7 @@ struct adf_rl_hw_data { u32 pcie_scale_div; u32 dcpr_correction; u32 max_tp[RL_ROOT_MAX]; + u32 svc_ae_mask[SVC_BASE_COUNT]; struct rl_slice_cnt slices; }; -- 2.47.2