[PATCH v2 2/2] crypto: qat - add pm_status debugfs file

Lucas Segarra Fernandez
2023-08-18T10:25:40Z

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>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
Documentation/ABI/testing/debugfs-driver-qat | 9 +
drivers/crypto/intel/qat/qat_common/Makefile | 1 +
.../intel/qat/qat_common/adf_accel_devices.h | 13 +
.../crypto/intel/qat/qat_common/adf_admin.c | 25 ++
.../intel/qat/qat_common/adf_common_drv.h | 1 +
.../crypto/intel/qat/qat_common/adf_dbgfs.c | 3 +
.../crypto/intel/qat/qat_common/adf_gen4_pm.c | 258 ++++++++++++++++++
.../crypto/intel/qat/qat_common/adf_gen4_pm.h | 34 +++
.../intel/qat/qat_common/adf_pm_dbgfs.c | 47 ++++
.../intel/qat/qat_common/adf_pm_dbgfs.h | 12 +
.../qat/qat_common/icp_qat_fw_init_admin.h | 35 +++
11 files changed, 438 insertions(+)
create mode 100644 drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.c
create mode 100644 drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.h

diff --git a/Documentation/ABI/testing/debugfs-driver-qat b/Documentation/ABI/testing/debugfs-driver-qat
index 6731ffacc5f0..1a21eea414b5 100644
--- a/Documentation/ABI/testing/debugfs-driver-qat
+++ b/Documentation/ABI/testing/debugfs-driver-qat
@@ -59,3 +59,12 @@ Description: (RO) Read returns the device health status.

The driver does not monitor for Heartbeat. It is left for a user
to poll the status periodically.
+
+What: /sys/kernel/debug/qat_<device>_<BDF>/pm_status
+Date: November 2023
+KernelVersion: 6.6
+Contact: qat-linux@intel.com
+Description: (RO) Read returns power management information specific to the
+ QAT device.
+
+ This attribute is only available for qat_4xxx devices.
diff --git a/drivers/crypto/intel/qat/qat_common/Makefile b/drivers/crypto/intel/qat/qat_common/Makefile
index 43622c7fca71..3b3a41d2b2a4 100644
--- a/drivers/crypto/intel/qat/qat_common/Makefile
+++ b/drivers/crypto/intel/qat/qat_common/Makefile
@@ -33,6 +33,7 @@ intel_qat-$(CONFIG_DEBUG_FS) += adf_transport_debug.o \
adf_fw_counters.o \
adf_heartbeat.o \
adf_heartbeat_dbgfs.o \
+ adf_pm_dbgfs.o \
adf_dbgfs.o

intel_qat-$(CONFIG_PCI_IOV) += adf_sriov.o adf_vf_isr.o adf_pfvf_utils.o \
diff --git a/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h b/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
index e57abde66f4f..fd5107e92853 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
+++ b/drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
@@ -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;
diff --git a/drivers/crypto/intel/qat/qat_common/adf_admin.c b/drivers/crypto/intel/qat/qat_common/adf_admin.c
index ff790823b868..a718713d4f1e 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_admin.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_admin.c
@@ -348,6 +348,31 @@ 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;
diff --git a/drivers/crypto/intel/qat/qat_common/adf_common_drv.h b/drivers/crypto/intel/qat/qat_common/adf_common_drv.h
index 673b5044c62a..4f991c7a7b26 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_common_drv.h
+++ b/drivers/crypto/intel/qat/qat_common/adf_common_drv.h
@@ -93,6 +93,7 @@ int adf_init_admin_pm(struct adf_accel_dev *accel_dev, u32 idle_delay);
int adf_send_admin_tim_sync(struct adf_accel_dev *accel_dev, u32 cnt);
int adf_send_admin_hb_timer(struct adf_accel_dev *accel_dev, uint32_t ticks);
int adf_get_fw_timestamp(struct adf_accel_dev *accel_dev, u64 *timestamp);
+int adf_get_pm_info(struct adf_accel_dev *accel_dev, dma_addr_t p_state_addr, size_t buff_size);
int adf_init_arb(struct adf_accel_dev *accel_dev);
void adf_exit_arb(struct adf_accel_dev *accel_dev);
void adf_update_ring_arb(struct adf_etr_ring_data *ring);
diff --git a/drivers/crypto/intel/qat/qat_common/adf_dbgfs.c b/drivers/crypto/intel/qat/qat_common/adf_dbgfs.c
index 04845f8d72be..395bb493f20c 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_dbgfs.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_dbgfs.c
@@ -8,6 +8,7 @@
#include "adf_dbgfs.h"
#include "adf_fw_counters.h"
#include "adf_heartbeat_dbgfs.h"
+#include "adf_pm_dbgfs.h"

/**
* adf_dbgfs_init() - add persistent debugfs entries
@@ -62,6 +63,7 @@ void adf_dbgfs_add(struct adf_accel_dev *accel_dev)
if (!accel_dev->is_vf) {
adf_fw_counters_dbgfs_add(accel_dev);
adf_heartbeat_dbgfs_add(accel_dev);
+ adf_pm_dbgfs_add(accel_dev);
}
}

@@ -75,6 +77,7 @@ void adf_dbgfs_rm(struct adf_accel_dev *accel_dev)
return;

if (!accel_dev->is_vf) {
+ adf_pm_dbgfs_rm(accel_dev);
adf_heartbeat_dbgfs_rm(accel_dev);
adf_fw_counters_dbgfs_rm(accel_dev);
}
diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.c b/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.c
index 3bde8759c2a2..911aca862798 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.c
@@ -1,8 +1,15 @@
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2022 Intel Corporation */
#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/dma-mapping.h>
+#include <linux/fs.h>
#include <linux/iopoll.h>
#include <linux/kstrtox.h>
+#include <linux/slab.h>
+#include <linux/stddef.h>
+#include <linux/string_helpers.h>
+#include <linux/stringify.h>
#include <linux/types.h>

#include "adf_accel_devices.h"
@@ -28,6 +35,7 @@ static int send_host_msg(struct adf_accel_dev *accel_dev)
{
char pm_idle_support_cfg[ADF_CFG_MAX_VAL_LEN_IN_BYTES] = {};
void __iomem *pmisc = adf_get_pmisc_base(accel_dev);
+ struct adf_pm *pm = &accel_dev->power_management;
bool pm_idle_support;
u32 msg;
int ret;
@@ -42,6 +50,11 @@ static int send_host_msg(struct adf_accel_dev *accel_dev)
if (ret)
pm_idle_support = true;

+ if (pm_idle_support)
+ pm->host_ack_counter++;
+ else
+ pm->host_nack_counter++;
+
/* Send HOST_MSG */
msg = FIELD_PREP(ADF_GEN4_PM_MSG_PAYLOAD_BIT_MASK,
pm_idle_support ? PM_SET_MIN : PM_NO_CHANGE);
@@ -62,17 +75,27 @@ static void pm_bh_handler(struct work_struct *work)
container_of(work, struct adf_gen4_pm_data, pm_irq_work);
struct adf_accel_dev *accel_dev = pm_data->accel_dev;
void __iomem *pmisc = adf_get_pmisc_base(accel_dev);
+ struct adf_pm *pm = &accel_dev->power_management;
u32 pm_int_sts = pm_data->pm_int_sts;
u32 val;

/* PM Idle interrupt */
if (pm_int_sts & ADF_GEN4_PM_IDLE_STS) {
+ pm->idle_irq_counters++;
/* Issue host message to FW */
if (send_host_msg(accel_dev))
dev_warn_ratelimited(&GET_DEV(accel_dev),
"Failed to send host msg to FW\n");
}

+ /* PM throttle interrupt */
+ if (pm_int_sts & ADF_GEN4_PM_THR_STS)
+ pm->throttle_irq_counters++;
+
+ /* PM fw interrupt */
+ if (pm_int_sts & ADF_GEN4_PM_FW_INT_STS)
+ pm->fw_irq_counters++;
+
/* Clear interrupt status */
ADF_CSR_WR(pmisc, ADF_GEN4_PM_INTERRUPT, pm_int_sts);

@@ -132,6 +155,9 @@ int adf_gen4_enable_pm(struct adf_accel_dev *accel_dev)
if (ret)
return ret;

+ /* Initialize PM internal data */
+ adf_gen4_init_dev_pm_data(accel_dev);
+
/* Enable default PM interrupts: IDLE, THROTTLE */
val = ADF_CSR_RD(pmisc, ADF_GEN4_PM_INTERRUPT);
val |= ADF_GEN4_PM_INT_EN_DEFAULT;
@@ -148,3 +174,235 @@ int adf_gen4_enable_pm(struct adf_accel_dev *accel_dev)
return 0;
}
EXPORT_SYMBOL_GPL(adf_gen4_enable_pm);
+
+#ifdef CONFIG_DEBUG_FS
+/*
+ * This is needed because a variable is used to index the mask at pm_scnprint_table(), making it not
+ * compile time constant, so the compile asserts from FIELD_GET() or u32_get_bits() won't be
+ * fulfilled.
+ */
+#define field_get(_mask, _reg) (((_reg) & (_mask)) >> (ffs(_mask) - 1))
+
+#define PM_INFO_MEMBER_OFF(member) \
+ (offsetof(struct icp_qat_fw_init_admin_pm_info, member) / sizeof(u32))
+
+#define PM_INFO_REGSET_ENTRY_MASK(_reg_, _field_, _mask_) \
+{ \
+ .reg_offset = PM_INFO_MEMBER_OFF(_reg_), \
+ .key = __stringify(_field_), \
+ .field_mask = _mask_, \
+}
+
+#define PM_INFO_REGSET_ENTRY32(_reg_, _field_) \
+ PM_INFO_REGSET_ENTRY_MASK(_reg_, _field_, GENMASK(31, 0))
+
+#define PM_INFO_REGSET_ENTRY(_reg_, _field_) \
+ PM_INFO_REGSET_ENTRY_MASK(_reg_, _field_, ADF_GEN4_PM_##_field_##_MASK)
+
+#define PM_INFO_MAX_KEY_LEN 21
+
+struct pm_status_row {
+ int reg_offset;
+ u32 field_mask;
+ const char *key;
+};
+
+static struct pm_status_row pm_fuse_rows[] = {
+ PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_PM),
+ PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_PM_IDLE),
+ PM_INFO_REGSET_ENTRY(fusectl0, ENABLE_DEEP_PM_IDLE),
+};
+
+static struct pm_status_row pm_info_rows[] = {
+ PM_INFO_REGSET_ENTRY(pm.status, CPM_PM_STATE),
+ PM_INFO_REGSET_ENTRY(pm.status, PENDING_WP),
+ PM_INFO_REGSET_ENTRY(pm.status, CURRENT_WP),
+ PM_INFO_REGSET_ENTRY(pm.fw_init, IDLE_ENABLE),
+ PM_INFO_REGSET_ENTRY(pm.fw_init, IDLE_FILTER),
+ PM_INFO_REGSET_ENTRY(pm.main, MIN_PWR_ACK),
+ PM_INFO_REGSET_ENTRY(pm.thread, MIN_PWR_ACK_PENDING),
+ PM_INFO_REGSET_ENTRY(pm.main, THR_VALUE),
+};
+
+static struct pm_status_row pm_ssm_rows[] = {
+ PM_INFO_REGSET_ENTRY(ssm.pm_enable, SSM_PM_ENABLE),
+ PM_INFO_REGSET_ENTRY32(ssm.active_constraint, ACTIVE_CONSTRAINT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_domain_status, DOMAIN_POWER_GATED),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, ATH_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, CPH_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, PKE_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, CPR_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, DCPR_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, UCS_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, XLT_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, WAT_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_active_status, WCP_ACTIVE_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, ATH_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, CPH_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, PKE_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, CPR_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, DCPR_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, UCS_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, XLT_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, WAT_MANAGED_COUNT),
+ PM_INFO_REGSET_ENTRY(ssm.pm_managed_status, WCP_MANAGED_COUNT),
+};
+
+static struct pm_status_row pm_log_rows[] = {
+ PM_INFO_REGSET_ENTRY32(event_counters.host_msg, HOST_MSG_EVENT_COUNT),
+ PM_INFO_REGSET_ENTRY32(event_counters.sys_pm, SYS_PM_EVENT_COUNT),
+ PM_INFO_REGSET_ENTRY32(event_counters.local_ssm, SSM_EVENT_COUNT),
+ PM_INFO_REGSET_ENTRY32(event_counters.timer, TIMER_EVENT_COUNT),
+ PM_INFO_REGSET_ENTRY32(event_counters.unknown, UNKNOWN_EVENT_COUNT),
+};
+
+static struct pm_status_row pm_event_rows[ICP_QAT_NUMBER_OF_PM_EVENTS] = {
+ PM_INFO_REGSET_ENTRY32(event_log[0], EVENT0),
+ PM_INFO_REGSET_ENTRY32(event_log[1], EVENT1),
+ PM_INFO_REGSET_ENTRY32(event_log[2], EVENT2),
+ PM_INFO_REGSET_ENTRY32(event_log[3], EVENT3),
+ PM_INFO_REGSET_ENTRY32(event_log[4], EVENT4),
+ PM_INFO_REGSET_ENTRY32(event_log[5], EVENT5),
+ PM_INFO_REGSET_ENTRY32(event_log[6], EVENT6),
+ PM_INFO_REGSET_ENTRY32(event_log[7], EVENT7),
+};
+
+static struct pm_status_row pm_csrs_rows[] = {
+ PM_INFO_REGSET_ENTRY32(pm.fw_init, CPM_PM_FW_INIT),
+ PM_INFO_REGSET_ENTRY32(pm.status, CPM_PM_STATUS),
+ PM_INFO_REGSET_ENTRY32(pm.main, CPM_PM_MASTER_FW),
+ PM_INFO_REGSET_ENTRY32(pm.pwrreq, CPM_PM_PWRREQ),
+};
+
+static int pm_scnprint_table(char *buff, struct pm_status_row *table, u32 *pm_info_regs,
+ size_t buff_size, int table_len, bool lowercase)
+{
+ char key[PM_INFO_MAX_KEY_LEN];
+ int wr = 0;
+ int i;
+
+ for (i = 0; i < table_len; i++) {
+ if (lowercase)
+ string_lower(key, table[i].key);
+ else
+ string_upper(key, table[i].key);
+
+ wr += scnprintf(&buff[wr], buff_size - wr, "%s: %#x\n", key,
+ field_get(table[i].field_mask, pm_info_regs[table[i].reg_offset]));
+ }
+
+ return wr;
+}
+
+static int pm_scnprint_table_upper_keys(char *buff, struct pm_status_row *table, u32 *pm_info_regs,
+ size_t buff_size, int table_len)
+{
+ return pm_scnprint_table(buff, table, pm_info_regs, buff_size, table_len, false);
+}
+
+static int pm_scnprint_table_lower_keys(char *buff, struct pm_status_row *table, u32 *pm_info_regs,
+ size_t buff_size, int table_len)
+{
+ return pm_scnprint_table(buff, table, pm_info_regs, buff_size, table_len, true);
+}
+
+static_assert(sizeof(struct icp_qat_fw_init_admin_pm_info) < PAGE_SIZE);
+
+static ssize_t adf_gen4_print_pm_status(struct adf_accel_dev *accel_dev, char __user *buf,
+ size_t count, loff_t *pos)
+{
+ void __iomem *pmisc = adf_get_pmisc_base(accel_dev);
+ struct adf_pm *pm = &accel_dev->power_management;
+ struct icp_qat_fw_init_admin_pm_info *pm_info;
+ dma_addr_t p_state_addr;
+ u32 *pm_info_regs;
+ char *pm_kv;
+ int len;
+ u32 val;
+ int ret;
+
+ pm_info = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!pm_info)
+ return -ENOMEM;
+
+ pm_kv = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!pm_kv) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ p_state_addr = dma_map_single(&GET_DEV(accel_dev), pm_info, PAGE_SIZE, DMA_FROM_DEVICE);
+ ret = dma_mapping_error(&GET_DEV(accel_dev), p_state_addr);
+ if (ret)
+ goto out_free;
+
+ /* Query PM info from QAT FW */
+ ret = adf_get_pm_info(accel_dev, p_state_addr, PAGE_SIZE);
+ dma_unmap_single(&GET_DEV(accel_dev), p_state_addr, PAGE_SIZE, DMA_FROM_DEVICE);
+ if (ret)
+ goto out_free;
+
+ pm_info_regs = (u32 *)pm_info;
+
+ /* Fusectl related */
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "----------- PM Fuse info ---------\n");
+ len += pm_scnprint_table_lower_keys(&pm_kv[len], pm_fuse_rows, pm_info_regs,
+ PAGE_SIZE - len, ARRAY_SIZE(pm_fuse_rows));
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "max_pwrreq: %#x\n", pm_info->max_pwrreq);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "min_pwrreq: %#x\n", pm_info->min_pwrreq);
+
+ /* PM related */
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "------------ PM Info ------------\n");
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "power_level: %s\n",
+ pm_info->pwr_state == PM_SET_MIN ? "min" : "max");
+ len += pm_scnprint_table_lower_keys(&pm_kv[len], pm_info_rows, pm_info_regs,
+ PAGE_SIZE - len, ARRAY_SIZE(pm_info_rows));
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "pm_mode: STATIC\n");
+
+ /* SSM related */
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "----------- SSM_PM Info ----------\n");
+ len += pm_scnprint_table_lower_keys(&pm_kv[len], pm_ssm_rows, pm_info_regs, PAGE_SIZE - len,
+ ARRAY_SIZE(pm_ssm_rows));
+
+ /* Log related */
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "------------- PM Log -------------\n");
+ len += pm_scnprint_table_lower_keys(&pm_kv[len], pm_log_rows, pm_info_regs, PAGE_SIZE - len,
+ ARRAY_SIZE(pm_log_rows));
+
+ len += pm_scnprint_table_lower_keys(&pm_kv[len], pm_event_rows, pm_info_regs,
+ PAGE_SIZE - len, ARRAY_SIZE(pm_event_rows));
+
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "idle_irq_count: %#x\n",
+ pm->idle_irq_counters);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "fw_irq_count: %#x\n",
+ pm->fw_irq_counters);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "throttle_irq_count: %#x\n",
+ pm->throttle_irq_counters);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "host_ack_count: %#x\n",
+ pm->host_ack_counter);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "host_nack_count: %#x\n",
+ pm->host_nack_counter);
+
+ /* CSRs content */
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "----------- HW PM CSRs -----------\n");
+ len += pm_scnprint_table_upper_keys(&pm_kv[len], pm_csrs_rows, pm_info_regs,
+ PAGE_SIZE - len, ARRAY_SIZE(pm_csrs_rows));
+
+ val = ADF_CSR_RD(pmisc, ADF_GEN4_PM_HOST_MSG);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "CPM_PM_HOST_MSG: %#x\n", val);
+ val = ADF_CSR_RD(pmisc, ADF_GEN4_PM_INTERRUPT);
+ len += scnprintf(&pm_kv[len], PAGE_SIZE - len, "CPM_PM_INTERRUPT: %#x\n", val);
+ ret = simple_read_from_buffer(buf, count, pos, pm_kv, len);
+
+out_free:
+ kfree(pm_info);
+ kfree(pm_kv);
+ return ret;
+}
+#endif
+
+void adf_gen4_init_dev_pm_data(struct adf_accel_dev *accel_dev)
+{
+ accel_dev->power_management.print_pm_status = adf_gen4_print_pm_status;
+ accel_dev->power_management.present = true;
+}
diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.h b/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.h
index 39d37b352b45..0d57b52cc9e6 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.h
+++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_pm.h
@@ -41,7 +41,41 @@ struct adf_accel_dev;
#define ADF_GEN4_PM_MAX_IDLE_FILTER (0x7)
#define ADF_GEN4_PM_DEFAULT_IDLE_SUPPORT (0x1)

+/* PM CSRs fields masks */
+#define ADF_GEN4_PM_DOMAIN_POWER_GATED_MASK GENMASK(15, 0)
+#define ADF_GEN4_PM_SSM_PM_ENABLE_MASK GENMASK(15, 0)
+#define ADF_GEN4_PM_IDLE_FILTER_MASK GENMASK(5, 3)
+#define ADF_GEN4_PM_IDLE_ENABLE_MASK BIT(2)
+#define ADF_GEN4_PM_ENABLE_PM_MASK BIT(21)
+#define ADF_GEN4_PM_ENABLE_PM_IDLE_MASK BIT(22)
+#define ADF_GEN4_PM_ENABLE_DEEP_PM_IDLE_MASK BIT(23)
+#define ADF_GEN4_PM_CURRENT_WP_MASK GENMASK(19, 11)
+#define ADF_GEN4_PM_CPM_PM_STATE_MASK GENMASK(22, 20)
+#define ADF_GEN4_PM_PENDING_WP_MASK GENMASK(31, 23)
+#define ADF_GEN4_PM_THR_VALUE_MASK GENMASK(6, 4)
+#define ADF_GEN4_PM_MIN_PWR_ACK_MASK BIT(7)
+#define ADF_GEN4_PM_MIN_PWR_ACK_PENDING_MASK BIT(17)
+#define ADF_GEN4_PM_CPR_ACTIVE_COUNT_MASK BIT(0)
+#define ADF_GEN4_PM_CPR_MANAGED_COUNT_MASK BIT(0)
+#define ADF_GEN4_PM_XLT_ACTIVE_COUNT_MASK BIT(1)
+#define ADF_GEN4_PM_XLT_MANAGED_COUNT_MASK BIT(1)
+#define ADF_GEN4_PM_DCPR_ACTIVE_COUNT_MASK GENMASK(3, 2)
+#define ADF_GEN4_PM_DCPR_MANAGED_COUNT_MASK GENMASK(3, 2)
+#define ADF_GEN4_PM_PKE_ACTIVE_COUNT_MASK GENMASK(8, 4)
+#define ADF_GEN4_PM_PKE_MANAGED_COUNT_MASK GENMASK(8, 4)
+#define ADF_GEN4_PM_WAT_ACTIVE_COUNT_MASK GENMASK(13, 9)
+#define ADF_GEN4_PM_WAT_MANAGED_COUNT_MASK GENMASK(13, 9)
+#define ADF_GEN4_PM_WCP_ACTIVE_COUNT_MASK GENMASK(18, 14)
+#define ADF_GEN4_PM_WCP_MANAGED_COUNT_MASK GENMASK(18, 14)
+#define ADF_GEN4_PM_UCS_ACTIVE_COUNT_MASK GENMASK(20, 19)
+#define ADF_GEN4_PM_UCS_MANAGED_COUNT_MASK GENMASK(20, 19)
+#define ADF_GEN4_PM_CPH_ACTIVE_COUNT_MASK GENMASK(24, 21)
+#define ADF_GEN4_PM_CPH_MANAGED_COUNT_MASK GENMASK(24, 21)
+#define ADF_GEN4_PM_ATH_ACTIVE_COUNT_MASK GENMASK(28, 25)
+#define ADF_GEN4_PM_ATH_MANAGED_COUNT_MASK GENMASK(28, 25)
+
int adf_gen4_enable_pm(struct adf_accel_dev *accel_dev);
bool adf_gen4_handle_pm_interrupt(struct adf_accel_dev *accel_dev);
+void adf_gen4_init_dev_pm_data(struct adf_accel_dev *accel_dev);

#endif
diff --git a/drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.c b/drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.c
new file mode 100644
index 000000000000..7c1049481fd5
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2023 Intel Corporation */
+#include <linux/debugfs.h>
+#include <linux/fs.h>
+#include <linux/types.h>
+
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_pm_dbgfs.h"
+
+static ssize_t pm_status_read(struct file *f, char __user *buf, size_t count, loff_t *pos)
+{
+ struct adf_accel_dev *accel_dev = file_inode(f)->i_private;
+ struct adf_pm pm = accel_dev->power_management;
+
+ if (pm.print_pm_status)
+ return pm.print_pm_status(accel_dev, buf, count, pos);
+
+ return count;
+}
+
+static const struct file_operations pm_status_fops = {
+ .owner = THIS_MODULE,
+ .read = pm_status_read,
+};
+
+void adf_pm_dbgfs_add(struct adf_accel_dev *accel_dev)
+{
+ struct adf_pm *pm = &accel_dev->power_management;
+
+ if (!pm->present)
+ return;
+
+ pm->debugfs_pm_status = debugfs_create_file("pm_status", 0400, accel_dev->debugfs_dir,
+ accel_dev, &pm_status_fops);
+}
+
+void adf_pm_dbgfs_rm(struct adf_accel_dev *accel_dev)
+{
+ struct adf_pm *pm = &accel_dev->power_management;
+
+ if (!pm->present)
+ return;
+
+ debugfs_remove(pm->debugfs_pm_status);
+ pm->debugfs_pm_status = NULL;
+}
diff --git a/drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.h b/drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.h
new file mode 100644
index 000000000000..83632e5aa097
--- /dev/null
+++ b/drivers/crypto/intel/qat/qat_common/adf_pm_dbgfs.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2023 Intel Corporation */
+
+#ifndef ADF_PM_DBGFS_H_
+#define ADF_PM_DBGFS_H_
+
+struct adf_accel_dev;
+
+void adf_pm_dbgfs_rm(struct adf_accel_dev *accel_dev);
+void adf_pm_dbgfs_add(struct adf_accel_dev *accel_dev);
+
+#endif /* ADF_PM_DBGFS_H_ */
diff --git a/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h b/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h
index 3e968a4bcc9c..791be0203797 100644
--- a/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h
+++ b/drivers/crypto/intel/qat/qat_common/icp_qat_fw_init_admin.h
@@ -19,6 +19,7 @@ enum icp_qat_fw_init_admin_cmd_id {
ICP_QAT_FW_HEARTBEAT_TIMER_SET = 13,
ICP_QAT_FW_TIMER_GET = 19,
ICP_QAT_FW_PM_STATE_CONFIG = 128,
+ ICP_QAT_FW_PM_INFO = 129,
};

enum icp_qat_fw_init_admin_resp_status {
@@ -107,4 +108,38 @@ struct icp_qat_fw_init_admin_resp {

#define ICP_QAT_FW_SYNC ICP_QAT_FW_HEARTBEAT_SYNC

+#define ICP_QAT_NUMBER_OF_PM_EVENTS 8
+
+struct icp_qat_fw_init_admin_pm_info {
+ __u16 max_pwrreq;
+ __u16 min_pwrreq;
+ __u16 resvrd1;
+ __u8 pwr_state;
+ __u8 resvrd2;
+ __u32 fusectl0;
+ struct_group(event_counters,
+ __u32 sys_pm;
+ __u32 host_msg;
+ __u32 unknown;
+ __u32 local_ssm;
+ __u32 timer;
+ );
+ __u32 event_log[ICP_QAT_NUMBER_OF_PM_EVENTS];
+ struct_group(pm,
+ __u32 fw_init;
+ __u32 pwrreq;
+ __u32 status;
+ __u32 main;
+ __u32 thread;
+ );
+ struct_group(ssm,
+ __u32 pm_enable;
+ __u32 pm_active_status;
+ __u32 pm_managed_status;
+ __u32 pm_domain_status;
+ __u32 active_constraint;
+ );
+ __u32 resvrd3[6];
+};
+
#endif
--
2.41.0