[deliverable/linux.git] / drivers / crypto / qat / qat_common / adf_init.c

/*
  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 otherwise.
 */
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 otherwise.
 */
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 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;

	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->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 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;
	}

	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 (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: 0 on success, error code otherwise.
 */
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");

	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);
	}

	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 (!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->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;
}
Commit	Line	Data
d8cba25d TS	1	/*
	2	This file is provided under a dual BSD/GPLv2 license. When using or
	3	redistributing this file, you may do so under either license.
	4
	5	GPL LICENSE SUMMARY
	6	Copyright(c) 2014 Intel Corporation.
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of version 2 of the GNU General Public License as
	9	published by the Free Software Foundation.
	10
	11	This program is distributed in the hope that it will be useful, but
	12	WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	General Public License for more details.
	15
	16	Contact Information:
	17	qat-linux@intel.com
	18
	19	BSD LICENSE
	20	Copyright(c) 2014 Intel Corporation.
	21	Redistribution and use in source and binary forms, with or without
	22	modification, are permitted provided that the following conditions
	23	are met:
	24
	25	* Redistributions of source code must retain the above copyright
	26	notice, this list of conditions and the following disclaimer.
	27	* Redistributions in binary form must reproduce the above copyright
	28	notice, this list of conditions and the following disclaimer in
	29	the documentation and/or other materials provided with the
	30	distribution.
	31	* Neither the name of Intel Corporation nor the names of its
	32	contributors may be used to endorse or promote products derived
	33	from this software without specific prior written permission.
	34
	35	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	36	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	37	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	38	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	39	OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	40	SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	41	LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	42	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	43	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	44	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	45	OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	46	*/
	47	#include <linux/mutex.h>
	48	#include <linux/list.h>
	49	#include <linux/bitops.h>
	50	#include <linux/delay.h>
	51	#include "adf_accel_devices.h"
	52	#include "adf_cfg.h"
	53	#include "adf_common_drv.h"
	54
	55	static LIST_HEAD(service_table);
	56	static DEFINE_MUTEX(service_lock);
	57
	58	static void adf_service_add(struct service_hndl *service)
	59	{
	60	mutex_lock(&service_lock);
	61	list_add(&service->list, &service_table);
	62	mutex_unlock(&service_lock);
	63	}
	64
65	/**
66	* adf_service_register() - Register acceleration service in the accel framework
67	* @service: Pointer to the service
68	*
69	* Function adds the acceleration service to the acceleration framework.
70	* To be used by QAT device specific drivers.
71	*
ec0d6fa3	72	* Return: 0 on success, error code otherwise.
d8cba25d TS	73	*/
	74	int adf_service_register(struct service_hndl *service)
	75	{
	76	service->init_status = 0;
	77	service->start_status = 0;
	78	adf_service_add(service);
	79	return 0;
	80	}
	81	EXPORT_SYMBOL_GPL(adf_service_register);
	82
	83	static void adf_service_remove(struct service_hndl *service)
	84	{
	85	mutex_lock(&service_lock);
	86	list_del(&service->list);
	87	mutex_unlock(&service_lock);
	88	}
	89
	90	/**
	91	* adf_service_unregister() - Unregister acceleration service from the framework
	92	* @service: Pointer to the service
	93	*
	94	* Function remove the acceleration service from the acceleration framework.
	95	* To be used by QAT device specific drivers.
	96	*
ec0d6fa3	97	* Return: 0 on success, error code otherwise.
d8cba25d TS	98	*/
	99	int adf_service_unregister(struct service_hndl *service)
	100	{
	101	if (service->init_status \|\| service->start_status) {
	102	pr_err("QAT: Could not remove active service\n");
	103	return -EFAULT;
	104	}
	105	adf_service_remove(service);
	106	return 0;
	107	}
	108	EXPORT_SYMBOL_GPL(adf_service_unregister);
	109
	110	/**
22e4dda0 AB	111	* adf_dev_init() - Init data structures and services for the given accel device
22e4dda0 AB	112	* @accel_dev: Pointer to acceleration device.
d8cba25d	113	*
22e4dda0 AB	114	* Initialize the ring data structures and the admin comms and arbitration
22e4dda0 AB	115	* services.
d8cba25d	116	*
ec0d6fa3	117	* Return: 0 on success, error code otherwise.
d8cba25d	118	*/
22e4dda0	119	int adf_dev_init(struct adf_accel_dev *accel_dev)
d8cba25d TS	120	{
	121	struct service_hndl *service;
	122	struct list_head *list_itr;
	123	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
	124
22e4dda0 AB	125	if (!hw_data) {
22e4dda0 AB	126	dev_err(&GET_DEV(accel_dev),
66550304	127	"Failed to init device - hw_data not set\n");
22e4dda0 AB	128	return -EFAULT;
	129	}
	130
d8cba25d	131	if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status)) {
66550304	132	dev_err(&GET_DEV(accel_dev), "Device not configured\n");
d8cba25d TS	133	return -EFAULT;
d8cba25d TS	134	}
22e4dda0 AB	135
	136	if (adf_init_etr_data(accel_dev)) {
	137	dev_err(&GET_DEV(accel_dev), "Failed initialize etr\n");
	138	return -EFAULT;
	139	}
	140
	141	if (hw_data->init_admin_comms && hw_data->init_admin_comms(accel_dev)) {
	142	dev_err(&GET_DEV(accel_dev), "Failed initialize admin comms\n");
	143	return -EFAULT;
	144	}
	145
	146	if (hw_data->init_arb && hw_data->init_arb(accel_dev)) {
	147	dev_err(&GET_DEV(accel_dev), "Failed initialize hw arbiter\n");
	148	return -EFAULT;
	149	}
	150
	151	hw_data->enable_ints(accel_dev);
d8cba25d TS	152
d8cba25d TS	153	if (adf_ae_init(accel_dev)) {
66550304 AB	154	dev_err(&GET_DEV(accel_dev),
66550304 AB	155	"Failed to initialise Acceleration Engine\n");
d8cba25d TS	156	return -EFAULT;
	157	}
	158	set_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status);
	159
	160	if (adf_ae_fw_load(accel_dev)) {
66550304 AB	161	dev_err(&GET_DEV(accel_dev),
66550304 AB	162	"Failed to load acceleration FW\n");
d8cba25d TS	163	return -EFAULT;
	164	}
	165	set_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
	166
	167	if (hw_data->alloc_irq(accel_dev)) {
66550304	168	dev_err(&GET_DEV(accel_dev), "Failed to allocate interrupts\n");
d8cba25d TS	169	return -EFAULT;
	170	}
	171	set_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
	172
	173	/*
	174	* Subservice initialisation is divided into two stages: init and start.
	175	* This is to facilitate any ordering dependencies between services
	176	* prior to starting any of the accelerators.
	177	*/
	178	list_for_each(list_itr, &service_table) {
	179	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	180	if (service->event_hld(accel_dev, ADF_EVENT_INIT)) {
66550304 AB	181	dev_err(&GET_DEV(accel_dev),
	182	"Failed to initialise service %s\n",
	183	service->name);
d8cba25d TS	184	return -EFAULT;
	185	}
	186	set_bit(accel_dev->accel_id, &service->init_status);
	187	}
	188
	189	hw_data->enable_error_correction(accel_dev);
	190
22e4dda0 AB	191	return 0;
	192	}
	193	EXPORT_SYMBOL_GPL(adf_dev_init);
	194
	195	/**
	196	* adf_dev_start() - Start acceleration service for the given accel device
	197	* @accel_dev: Pointer to acceleration device.
	198	*
	199	* Function notifies all the registered services that the acceleration device
	200	* is ready to be used.
	201	* To be used by QAT device specific drivers.
	202	*
ec0d6fa3	203	* Return: 0 on success, error code otherwise.
22e4dda0 AB	204	*/
	205	int adf_dev_start(struct adf_accel_dev *accel_dev)
	206	{
a5733139	207	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
22e4dda0 AB	208	struct service_hndl *service;
	209	struct list_head *list_itr;
	210
	211	set_bit(ADF_STATUS_STARTING, &accel_dev->status);
	212
d8cba25d	213	if (adf_ae_start(accel_dev)) {
66550304	214	dev_err(&GET_DEV(accel_dev), "AE Start Failed\n");
d8cba25d TS	215	return -EFAULT;
	216	}
	217	set_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
	218
a5733139 TS	219	if (hw_data->send_admin_init(accel_dev)) {
	220	dev_err(&GET_DEV(accel_dev), "Failed to send init message\n");
	221	return -EFAULT;
d8cba25d	222	}
a5733139	223
d8cba25d TS	224	list_for_each(list_itr, &service_table) {
d8cba25d TS	225	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	226	if (service->event_hld(accel_dev, ADF_EVENT_START)) {
66550304 AB	227	dev_err(&GET_DEV(accel_dev),
	228	"Failed to start service %s\n",
	229	service->name);
d8cba25d TS	230	return -EFAULT;
	231	}
	232	set_bit(accel_dev->accel_id, &service->start_status);
	233	}
	234
	235	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
	236	set_bit(ADF_STATUS_STARTED, &accel_dev->status);
	237
a9905320	238	if (qat_algs_register() \|\| qat_asym_algs_register()) {
66550304 AB	239	dev_err(&GET_DEV(accel_dev),
66550304 AB	240	"Failed to register crypto algs\n");
d8cba25d TS	241	set_bit(ADF_STATUS_STARTING, &accel_dev->status);
	242	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
	243	return -EFAULT;
	244	}
	245	return 0;
	246	}
	247	EXPORT_SYMBOL_GPL(adf_dev_start);
	248
	249	/**
	250	* adf_dev_stop() - Stop acceleration service for the given accel device
	251	* @accel_dev: Pointer to acceleration device.
	252	*
	253	* Function notifies all the registered services that the acceleration device
	254	* is shuting down.
	255	* To be used by QAT device specific drivers.
	256	*
ec0d6fa3	257	* Return: 0 on success, error code otherwise.
d8cba25d TS	258	*/
	259	int adf_dev_stop(struct adf_accel_dev *accel_dev)
	260	{
d8cba25d TS	261	struct service_hndl *service;
d8cba25d TS	262	struct list_head *list_itr;
53bc0251 AB	263	bool wait = false;
53bc0251 AB	264	int ret;
d8cba25d TS	265
	266	if (!adf_dev_started(accel_dev) &&
	267	!test_bit(ADF_STATUS_STARTING, &accel_dev->status)) {
	268	return 0;
	269	}
d8cba25d TS	270	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
	271	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
	272
	273	if (qat_algs_unregister())
66550304 AB	274	dev_err(&GET_DEV(accel_dev),
66550304 AB	275	"Failed to unregister crypto algs\n");
d8cba25d	276
a9905320 TS	277	qat_asym_algs_unregister();
a9905320 TS	278
d8cba25d TS	279	list_for_each(list_itr, &service_table) {
d8cba25d TS	280	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d TS	281	if (!test_bit(accel_dev->accel_id, &service->start_status))
	282	continue;
	283	ret = service->event_hld(accel_dev, ADF_EVENT_STOP);
	284	if (!ret) {
	285	clear_bit(accel_dev->accel_id, &service->start_status);
	286	} else if (ret == -EAGAIN) {
53bc0251	287	wait = true;
d8cba25d TS	288	clear_bit(accel_dev->accel_id, &service->start_status);
	289	}
	290	}
d8cba25d TS	291
	292	if (wait)
	293	msleep(100);
	294
fd98d692	295	if (test_bit(ADF_STATUS_AE_STARTED, &accel_dev->status)) {
d8cba25d	296	if (adf_ae_stop(accel_dev))
66550304	297	dev_err(&GET_DEV(accel_dev), "failed to stop AE\n");
d8cba25d TS	298	else
	299	clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
	300	}
	301
22e4dda0 AB	302	return 0;
	303	}
	304	EXPORT_SYMBOL_GPL(adf_dev_stop);
	305
	306	/**
	307	* adf_dev_shutdown() - shutdown acceleration services and data strucutures
	308	* @accel_dev: Pointer to acceleration device
	309	*
	310	* Cleanup the ring data structures and the admin comms and arbitration
	311	* services.
	312	*/
	313	void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
	314	{
	315	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
	316	struct service_hndl *service;
	317	struct list_head *list_itr;
	318
	319	if (!hw_data) {
	320	dev_err(&GET_DEV(accel_dev),
	321	"QAT: Failed to shutdown device - hw_data not set\n");
	322	return;
	323	}
	324
d8cba25d	325	if (test_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status)) {
b4e97050 TS	326	adf_ae_fw_release(accel_dev);
b4e97050 TS	327	clear_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
d8cba25d TS	328	}
	329
	330	if (test_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status)) {
	331	if (adf_ae_shutdown(accel_dev))
66550304 AB	332	dev_err(&GET_DEV(accel_dev),
66550304 AB	333	"Failed to shutdown Accel Engine\n");
d8cba25d TS	334	else
	335	clear_bit(ADF_STATUS_AE_INITIALISED,
	336	&accel_dev->status);
	337	}
	338
	339	list_for_each(list_itr, &service_table) {
	340	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d TS	341	if (!test_bit(accel_dev->accel_id, &service->init_status))
	342	continue;
	343	if (service->event_hld(accel_dev, ADF_EVENT_SHUTDOWN))
66550304 AB	344	dev_err(&GET_DEV(accel_dev),
	345	"Failed to shutdown service %s\n",
	346	service->name);
d8cba25d TS	347	else
	348	clear_bit(accel_dev->accel_id, &service->init_status);
	349	}
	350
	351	if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) {
	352	hw_data->free_irq(accel_dev);
	353	clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
	354	}
	355
	356	/* Delete configuration only if not restarting */
	357	if (!test_bit(ADF_STATUS_RESTARTING, &accel_dev->status))
	358	adf_cfg_del_all(accel_dev);
	359
22e4dda0 AB	360	if (hw_data->exit_arb)
	361	hw_data->exit_arb(accel_dev);
	362
	363	if (hw_data->exit_admin_comms)
	364	hw_data->exit_admin_comms(accel_dev);
	365
	366	adf_cleanup_etr_data(accel_dev);
d8cba25d	367	}
22e4dda0	368	EXPORT_SYMBOL_GPL(adf_dev_shutdown);
d8cba25d TS	369
	370	int adf_dev_restarting_notify(struct adf_accel_dev *accel_dev)
	371	{
	372	struct service_hndl *service;
	373	struct list_head *list_itr;
	374
	375	list_for_each(list_itr, &service_table) {
	376	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	377	if (service->event_hld(accel_dev, ADF_EVENT_RESTARTING))
66550304 AB	378	dev_err(&GET_DEV(accel_dev),
	379	"Failed to restart service %s.\n",
	380	service->name);
d8cba25d TS	381	}
	382	return 0;
	383	}
	384
	385	int adf_dev_restarted_notify(struct adf_accel_dev *accel_dev)
	386	{
	387	struct service_hndl *service;
	388	struct list_head *list_itr;
	389
	390	list_for_each(list_itr, &service_table) {
	391	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	392	if (service->event_hld(accel_dev, ADF_EVENT_RESTARTED))
66550304 AB	393	dev_err(&GET_DEV(accel_dev),
	394	"Failed to restart service %s.\n",
	395	service->name);
d8cba25d TS	396	}
	397	return 0;
	398	}