blob: c2c718f1b48952402b75c26d3a4629568be9e827 [file] [log] [blame]
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2014 - 2020 Intel Corporation */
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include "adf_accel_devices.h"
#include "adf_cfg.h"
#include "adf_common_drv.h"
static LIST_HEAD(service_table);
static DEFINE_MUTEX(service_lock);
static void adf_service_add(struct service_hndl *service)
{
mutex_lock(&service_lock);
list_add(&service->list, &service_table);
mutex_unlock(&service_lock);
}
int adf_service_register(struct service_hndl *service)
{
memset(service->init_status, 0, sizeof(service->init_status));
memset(service->start_status, 0, sizeof(service->start_status));
adf_service_add(service);
return 0;
}
static void adf_service_remove(struct service_hndl *service)
{
mutex_lock(&service_lock);
list_del(&service->list);
mutex_unlock(&service_lock);
}
int adf_service_unregister(struct service_hndl *service)
{
int i;
for (i = 0; i < ARRAY_SIZE(service->init_status); i++) {
if (service->init_status[i] || service->start_status[i]) {
pr_err("QAT: Could not remove active service\n");
return -EFAULT;
}
}
adf_service_remove(service);
return 0;
}
/**
* adf_dev_init() - Init data structures and services for the given accel device
* @accel_dev: Pointer to acceleration device.
*
* Initialize the ring data structures and the admin comms and arbitration
* services.
*
* Return: 0 on success, error code otherwise.
*/
int adf_dev_init(struct adf_accel_dev *accel_dev)
{
struct service_hndl *service;
struct list_head *list_itr;
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
int ret;
if (!hw_data) {
dev_err(&GET_DEV(accel_dev),
"Failed to init device - hw_data not set\n");
return -EFAULT;
}
if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status) &&
!accel_dev->is_vf) {
dev_err(&GET_DEV(accel_dev), "Device not configured\n");
return -EFAULT;
}
if (adf_init_etr_data(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed initialize etr\n");
return -EFAULT;
}
if (hw_data->init_device && hw_data->init_device(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed to initialize device\n");
return -EFAULT;
}
if (hw_data->init_admin_comms && hw_data->init_admin_comms(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed initialize admin comms\n");
return -EFAULT;
}
if (hw_data->init_arb && hw_data->init_arb(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed initialize hw arbiter\n");
return -EFAULT;
}
if (adf_ae_init(accel_dev)) {
dev_err(&GET_DEV(accel_dev),
"Failed to initialise Acceleration Engine\n");
return -EFAULT;
}
set_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status);
if (adf_ae_fw_load(accel_dev)) {
dev_err(&GET_DEV(accel_dev),
"Failed to load acceleration FW\n");
return -EFAULT;
}
set_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
if (hw_data->alloc_irq(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed to allocate interrupts\n");
return -EFAULT;
}
set_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
hw_data->enable_ints(accel_dev);
hw_data->enable_error_correction(accel_dev);
ret = hw_data->pfvf_ops.enable_comms(accel_dev);
if (ret)
return ret;
if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status) &&
accel_dev->is_vf) {
if (qat_crypto_vf_dev_config(accel_dev))
return -EFAULT;
}
/*
* Subservice initialisation is divided into two stages: init and start.
* This is to facilitate any ordering dependencies between services
* prior to starting any of the accelerators.
*/
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (service->event_hld(accel_dev, ADF_EVENT_INIT)) {
dev_err(&GET_DEV(accel_dev),
"Failed to initialise service %s\n",
service->name);
return -EFAULT;
}
set_bit(accel_dev->accel_id, service->init_status);
}
return 0;
}
EXPORT_SYMBOL_GPL(adf_dev_init);
/**
* adf_dev_start() - Start acceleration service for the given accel device
* @accel_dev: Pointer to acceleration device.
*
* Function notifies all the registered services that the acceleration device
* is ready to be used.
* To be used by QAT device specific drivers.
*
* Return: 0 on success, error code otherwise.
*/
int adf_dev_start(struct adf_accel_dev *accel_dev)
{
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
struct service_hndl *service;
struct list_head *list_itr;
set_bit(ADF_STATUS_STARTING, &accel_dev->status);
if (adf_ae_start(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "AE Start Failed\n");
return -EFAULT;
}
set_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
if (hw_data->send_admin_init(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed to send init message\n");
return -EFAULT;
}
/* Set ssm watch dog timer */
if (hw_data->set_ssm_wdtimer)
hw_data->set_ssm_wdtimer(accel_dev);
/* Enable Power Management */
if (hw_data->enable_pm && hw_data->enable_pm(accel_dev)) {
dev_err(&GET_DEV(accel_dev), "Failed to configure Power Management\n");
return -EFAULT;
}
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (service->event_hld(accel_dev, ADF_EVENT_START)) {
dev_err(&GET_DEV(accel_dev),
"Failed to start service %s\n",
service->name);
return -EFAULT;
}
set_bit(accel_dev->accel_id, service->start_status);
}
clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
set_bit(ADF_STATUS_STARTED, &accel_dev->status);
if (!list_empty(&accel_dev->crypto_list) &&
(qat_algs_register() || qat_asym_algs_register())) {
dev_err(&GET_DEV(accel_dev),
"Failed to register crypto algs\n");
set_bit(ADF_STATUS_STARTING, &accel_dev->status);
clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
return -EFAULT;
}
return 0;
}
EXPORT_SYMBOL_GPL(adf_dev_start);
/**
* adf_dev_stop() - Stop acceleration service for the given accel device
* @accel_dev: Pointer to acceleration device.
*
* Function notifies all the registered services that the acceleration device
* is shuting down.
* To be used by QAT device specific drivers.
*
* Return: void
*/
void adf_dev_stop(struct adf_accel_dev *accel_dev)
{
struct service_hndl *service;
struct list_head *list_itr;
bool wait = false;
int ret;
if (!adf_dev_started(accel_dev) &&
!test_bit(ADF_STATUS_STARTING, &accel_dev->status))
return;
clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
if (!list_empty(&accel_dev->crypto_list)) {
qat_algs_unregister();
qat_asym_algs_unregister();
}
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (!test_bit(accel_dev->accel_id, service->start_status))
continue;
ret = service->event_hld(accel_dev, ADF_EVENT_STOP);
if (!ret) {
clear_bit(accel_dev->accel_id, service->start_status);
} else if (ret == -EAGAIN) {
wait = true;
clear_bit(accel_dev->accel_id, service->start_status);
}
}
if (wait)
msleep(100);
if (test_bit(ADF_STATUS_AE_STARTED, &accel_dev->status)) {
if (adf_ae_stop(accel_dev))
dev_err(&GET_DEV(accel_dev), "failed to stop AE\n");
else
clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
}
}
EXPORT_SYMBOL_GPL(adf_dev_stop);
/**
* adf_dev_shutdown() - shutdown acceleration services and data strucutures
* @accel_dev: Pointer to acceleration device
*
* Cleanup the ring data structures and the admin comms and arbitration
* services.
*/
void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
{
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
struct service_hndl *service;
struct list_head *list_itr;
if (!hw_data) {
dev_err(&GET_DEV(accel_dev),
"QAT: Failed to shutdown device - hw_data not set\n");
return;
}
if (test_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status)) {
adf_ae_fw_release(accel_dev);
clear_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
}
if (test_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status)) {
if (adf_ae_shutdown(accel_dev))
dev_err(&GET_DEV(accel_dev),
"Failed to shutdown Accel Engine\n");
else
clear_bit(ADF_STATUS_AE_INITIALISED,
&accel_dev->status);
}
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (!test_bit(accel_dev->accel_id, service->init_status))
continue;
if (service->event_hld(accel_dev, ADF_EVENT_SHUTDOWN))
dev_err(&GET_DEV(accel_dev),
"Failed to shutdown service %s\n",
service->name);
else
clear_bit(accel_dev->accel_id, service->init_status);
}
hw_data->disable_iov(accel_dev);
if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) {
hw_data->free_irq(accel_dev);
clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
}
/* Delete configuration only if not restarting */
if (!test_bit(ADF_STATUS_RESTARTING, &accel_dev->status))
adf_cfg_del_all(accel_dev);
if (hw_data->exit_arb)
hw_data->exit_arb(accel_dev);
if (hw_data->exit_admin_comms)
hw_data->exit_admin_comms(accel_dev);
adf_cleanup_etr_data(accel_dev);
adf_dev_restore(accel_dev);
}
EXPORT_SYMBOL_GPL(adf_dev_shutdown);
int adf_dev_restarting_notify(struct adf_accel_dev *accel_dev)
{
struct service_hndl *service;
struct list_head *list_itr;
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (service->event_hld(accel_dev, ADF_EVENT_RESTARTING))
dev_err(&GET_DEV(accel_dev),
"Failed to restart service %s.\n",
service->name);
}
return 0;
}
int adf_dev_restarted_notify(struct adf_accel_dev *accel_dev)
{
struct service_hndl *service;
struct list_head *list_itr;
list_for_each(list_itr, &service_table) {
service = list_entry(list_itr, struct service_hndl, list);
if (service->event_hld(accel_dev, ADF_EVENT_RESTARTED))
dev_err(&GET_DEV(accel_dev),
"Failed to restart service %s.\n",
service->name);
}
return 0;
}