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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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13
drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
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@@ -291,6 +291,18 @@ struct adf_dc_data {
dma_addr_t ovf_buff_p;
};
struct adf_pm {
struct dentry *debugfs_pm_status;
bool present;
int idle_irq_counters;
int throttle_irq_counters;
int fw_irq_counters;
int host_ack_counter;
int host_nack_counter;
ssize_t (*print_pm_status)(struct adf_accel_dev *accel_dev,
char __user *buf, size_t count, loff_t *pos);
};
struct adf_accel_dev {
struct adf_etr_data *transport;
struct adf_hw_device_data *hw_device;
@@ -298,6 +310,7 @@ struct adf_accel_dev {
struct adf_fw_loader_data *fw_loader;
struct adf_admin_comms *admin;
struct adf_dc_data *dc_data;
struct adf_pm power_management;
struct list_head crypto_list;
struct list_head compression_list;
unsigned long status;