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crypto: qat - add pm_status debugfs file

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QAT devices implement a mechanism that allows them to go autonomously
to a low power state depending on the load.

Expose power management info by providing the "pm_status" file under
debugfs. This includes PM state, PM event log, PM event counters, PM HW
CSRs, per-resource type constrain counters and per-domain power gating
status specific to the QAT device.

This information is retrieved from (1) the FW by means of
ICP_QAT_FW_PM_INFO command, (2) CSRs and (3) counters collected by the
device driver.

In addition, add logic to keep track and report power management event
interrupts and acks/nacks sent to FW to allow/prevent state transitions.

Signed-off-by: Lucas Segarra Fernandez <lucas.segarra.fernandez@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Lucas Segarra Fernandez
2023-10-04 12:09:20 +02:00
committed by Herbert Xu
parent 756762decc
commit e079231676
12 changed files with 480 additions and 5 deletions
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27
drivers/crypto/intel/qat/qat_common/adf_admin.c
View File

@@ -379,6 +379,33 @@ int adf_init_admin_pm(struct adf_accel_dev *accel_dev, u32 idle_delay)
return adf_send_admin(accel_dev, &req, &resp, ae_mask);
}
int adf_get_pm_info(struct adf_accel_dev *accel_dev, dma_addr_t p_state_addr,
size_t buff_size)
{
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
struct icp_qat_fw_init_admin_req req = { };
struct icp_qat_fw_init_admin_resp resp;
u32 ae_mask = hw_data->admin_ae_mask;
int ret;
/* Query pm info via init/admin cmd */
if (!accel_dev->admin) {
dev_err(&GET_DEV(accel_dev), "adf_admin is not available\n");
return -EFAULT;
}
req.cmd_id = ICP_QAT_FW_PM_INFO;
req.init_cfg_sz = buff_size;
req.init_cfg_ptr = p_state_addr;
ret = adf_send_admin(accel_dev, &req, &resp, ae_mask);
if (ret)
dev_err(&GET_DEV(accel_dev),
"Failed to query power-management info\n");
return ret;
}
int adf_init_admin_comms(struct adf_accel_dev *accel_dev)
{
struct adf_admin_comms *admin;