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