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crypto: qat - add measure clock frequency

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The QAT hardware does not expose a mechanism to report its clock
frequency. This is required to implement the Heartbeat feature.

Add a clock measuring algorithm that estimates the frequency by
comparing the internal timestamp counter incremented by the firmware
with the time measured by the kernel.
The frequency value is only used internally and not exposed to
the user.

Signed-off-by: Damian Muszynski <damian.muszynski@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Damian Muszynski
2023-06-30 19:03:56 +02:00
committed by Herbert Xu
parent 7f77b6797b
commit e2980ba57e
16 changed files with 268 additions and 0 deletions
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2
drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
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@@ -190,6 +190,8 @@ struct adf_hw_device_data {
int (*send_admin_init)(struct adf_accel_dev *accel_dev);
int (*start_timer)(struct adf_accel_dev *accel_dev);
void (*stop_timer)(struct adf_accel_dev *accel_dev);
uint32_t (*get_hb_clock)(struct adf_hw_device_data *self);
int (*measure_clock)(struct adf_accel_dev *accel_dev);
int (*init_arb)(struct adf_accel_dev *accel_dev);
void (*exit_arb)(struct adf_accel_dev *accel_dev);
const u32 *(*get_arb_mapping)(struct adf_accel_dev *accel_dev);