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crypto: qat - limit heartbeat notifications

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When the driver detects an heartbeat failure, it starts the recovery
flow. Set a limit so that the number of events is limited in case the
heartbeat status is read too frequently.

Signed-off-by: Furong Zhou <furong.zhou@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Markas Rapoportas <markas.rapoportas@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Mun Chun Yep <mun.chun.yep@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Furong Zhou 2024-02-02 18:53:23 +08:00 committed by Herbert Xu
parent f5419a4239
commit 750fa7c20e
2 changed files with 17 additions and 3 deletions
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17
drivers/crypto/intel/qat/qat_common/adf_heartbeat.c
View File

@ -205,6 +205,19 @@ static int adf_hb_get_status(struct adf_accel_dev *accel_dev)
return ret;
}
static void adf_heartbeat_reset(struct adf_accel_dev *accel_dev)
{
u64 curr_time = adf_clock_get_current_time();
u64 time_since_reset = curr_time - accel_dev->heartbeat->last_hb_reset_time;
if (time_since_reset < ADF_CFG_HB_RESET_MS)
return;
accel_dev->heartbeat->last_hb_reset_time = curr_time;
if (adf_notify_fatal_error(accel_dev))
dev_err(&GET_DEV(accel_dev), "Failed to notify fatal error\n");
}
void adf_heartbeat_status(struct adf_accel_dev *accel_dev,
enum adf_device_heartbeat_status *hb_status)
{
@ -229,9 +242,7 @@ void adf_heartbeat_status(struct adf_accel_dev *accel_dev,
"Heartbeat ERROR: QAT is not responding.\n");
*hb_status = HB_DEV_UNRESPONSIVE;
hb->hb_failed_counter++;
if (adf_notify_fatal_error(accel_dev))
dev_err(&GET_DEV(accel_dev),
"Failed to notify fatal error\n");
adf_heartbeat_reset(accel_dev);
return;
}

3
drivers/crypto/intel/qat/qat_common/adf_heartbeat.h
View File

@ -13,6 +13,8 @@ struct dentry;
#define ADF_CFG_HB_TIMER_DEFAULT_MS 500
#define ADF_CFG_HB_COUNT_THRESHOLD 3
#define ADF_CFG_HB_RESET_MS 5000
enum adf_device_heartbeat_status {
HB_DEV_UNRESPONSIVE = 0,
HB_DEV_ALIVE,
@ -30,6 +32,7 @@ struct adf_heartbeat {
unsigned int hb_failed_counter;
unsigned int hb_timer;
u64 last_hb_check_time;
u64 last_hb_reset_time;
bool ctrs_cnt_checked;
struct hb_dma_addr {
dma_addr_t phy_addr;