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crypto: qat - add internal timer for qat 4xxx

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The power management feature in QAT 4xxx devices can disable clock
sources used to implement timers. Because of that, the firmware needs to
get an external reliable source of time.

Add a kernel delayed work that periodically sends an event to the
firmware. This is triggered every 200ms. At each execution, the driver
sends a sync request to the firmware reporting the current timestamp
counter value.

This is a pre-requisite for enabling the heartbeat, telemetry and
rate limiting features.

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 19:03:54 +02:00
committed by Herbert Xu
parent 865b50fe6e
commit fd77d8da1f
10 changed files with 137 additions and 0 deletions
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12
drivers/crypto/intel/qat/qat_common/adf_admin.c
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@@ -241,6 +241,18 @@ int adf_get_ae_fw_counters(struct adf_accel_dev *accel_dev, u16 ae, u64 *reqs, u
return 0;
}
int adf_send_admin_tim_sync(struct adf_accel_dev *accel_dev, u32 cnt)
{
u32 ae_mask = accel_dev->hw_device->ae_mask;
struct icp_qat_fw_init_admin_req req = { };
struct icp_qat_fw_init_admin_resp resp = { };
req.cmd_id = ICP_QAT_FW_SYNC;
req.int_timer_ticks = cnt;
return adf_send_admin(accel_dev, &req, &resp, ae_mask);
}
/**
* adf_send_admin_init() - Function sends init message to FW
* @accel_dev: Pointer to acceleration device.