diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/crypto/qat/qat_common/adf_init.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/crypto/qat/qat_common/adf_init.c')
-rw-r--r-- | kernel/drivers/crypto/qat/qat_common/adf_init.c | 470 |
1 files changed, 470 insertions, 0 deletions
diff --git a/kernel/drivers/crypto/qat/qat_common/adf_init.c b/kernel/drivers/crypto/qat/qat_common/adf_init.c new file mode 100644 index 000000000..245f43237 --- /dev/null +++ b/kernel/drivers/crypto/qat/qat_common/adf_init.c @@ -0,0 +1,470 @@ +/* + This file is provided under a dual BSD/GPLv2 license. When using or + redistributing this file, you may do so under either license. + + GPL LICENSE SUMMARY + Copyright(c) 2014 Intel Corporation. + This program is free software; you can redistribute it and/or modify + it under the terms of version 2 of the GNU General Public License as + published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + Contact Information: + qat-linux@intel.com + + BSD LICENSE + Copyright(c) 2014 Intel Corporation. + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name of Intel Corporation nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +#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); +} + +/** + * adf_service_register() - Register acceleration service in the accel framework + * @service: Pointer to the service + * + * Function adds the acceleration service to the acceleration framework. + * To be used by QAT device specific drivers. + * + * Return: 0 on success, error code othewise. + */ +int adf_service_register(struct service_hndl *service) +{ + service->init_status = 0; + service->start_status = 0; + adf_service_add(service); + return 0; +} +EXPORT_SYMBOL_GPL(adf_service_register); + +static void adf_service_remove(struct service_hndl *service) +{ + mutex_lock(&service_lock); + list_del(&service->list); + mutex_unlock(&service_lock); +} + +/** + * adf_service_unregister() - Unregister acceleration service from the framework + * @service: Pointer to the service + * + * Function remove the acceleration service from the acceleration framework. + * To be used by QAT device specific drivers. + * + * Return: 0 on success, error code othewise. + */ +int adf_service_unregister(struct service_hndl *service) +{ + if (service->init_status || service->start_status) { + pr_err("QAT: Could not remove active service\n"); + return -EFAULT; + } + adf_service_remove(service); + return 0; +} +EXPORT_SYMBOL_GPL(adf_service_unregister); + +/** + * 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 othewise. + */ +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; + + 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)) { + 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_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; + } + + hw_data->enable_ints(accel_dev); + + 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); + + /* + * 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->admin) + continue; + 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); + } + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (service->admin) + continue; + 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); + } + + hw_data->enable_error_correction(accel_dev); + + 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 othewise. + */ +int adf_dev_start(struct adf_accel_dev *accel_dev) +{ + 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); + + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (!service->admin) + continue; + 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); + } + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (service->admin) + continue; + 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 (qat_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: 0 on success, error code othewise. + */ +int 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 0; + } + clear_bit(ADF_STATUS_STARTING, &accel_dev->status); + clear_bit(ADF_STATUS_STARTED, &accel_dev->status); + + if (qat_algs_unregister()) + dev_err(&GET_DEV(accel_dev), + "Failed to unregister crypto algs\n"); + + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (service->admin) + continue; + 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); + } + } + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (!service->admin) + continue; + if (!test_bit(accel_dev->accel_id, &service->start_status)) + continue; + if (service->event_hld(accel_dev, ADF_EVENT_STOP)) + dev_err(&GET_DEV(accel_dev), + "Failed to shutdown service %s\n", + service->name); + else + 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); + } + + return 0; +} +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 (service->admin) + continue; + 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); + } + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (!service->admin) + continue; + 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); + } + + 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); +} +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->admin) + continue; + if (service->event_hld(accel_dev, ADF_EVENT_RESTARTING)) + dev_err(&GET_DEV(accel_dev), + "Failed to restart service %s.\n", + service->name); + } + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (!service->admin) + continue; + 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->admin) + continue; + if (service->event_hld(accel_dev, ADF_EVENT_RESTARTED)) + dev_err(&GET_DEV(accel_dev), + "Failed to restart service %s.\n", + service->name); + } + list_for_each(list_itr, &service_table) { + service = list_entry(list_itr, struct service_hndl, list); + if (!service->admin) + continue; + 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; +} |