[mirror_ubuntu-zesty-kernel.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);
	hw_data->enable_vf2pf_comms(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 (!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: 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 (!list_empty(&accel_dev->crypto_list) && qat_algs_unregister())
		dev_err(&GET_DEV(accel_dev),
			"Failed to unregister crypto algs\n");

	if (!list_empty(&accel_dev->crypto_list))
		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);

	hw_data->disable_iov(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);
ed8ccaef	190	hw_data->enable_vf2pf_comms(accel_dev);
d8cba25d	191
22e4dda0 AB	192	return 0;
	193	}
	194	EXPORT_SYMBOL_GPL(adf_dev_init);
	195
	196	/**
	197	* adf_dev_start() - Start acceleration service for the given accel device
	198	* @accel_dev: Pointer to acceleration device.
	199	*
	200	* Function notifies all the registered services that the acceleration device
	201	* is ready to be used.
	202	* To be used by QAT device specific drivers.
	203	*
ec0d6fa3	204	* Return: 0 on success, error code otherwise.
22e4dda0 AB	205	*/
	206	int adf_dev_start(struct adf_accel_dev *accel_dev)
	207	{
a5733139	208	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
22e4dda0 AB	209	struct service_hndl *service;
	210	struct list_head *list_itr;
	211
	212	set_bit(ADF_STATUS_STARTING, &accel_dev->status);
	213
d8cba25d	214	if (adf_ae_start(accel_dev)) {
66550304	215	dev_err(&GET_DEV(accel_dev), "AE Start Failed\n");
d8cba25d TS	216	return -EFAULT;
	217	}
	218	set_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
	219
a5733139 TS	220	if (hw_data->send_admin_init(accel_dev)) {
	221	dev_err(&GET_DEV(accel_dev), "Failed to send init message\n");
	222	return -EFAULT;
d8cba25d	223	}
a5733139	224
d8cba25d TS	225	list_for_each(list_itr, &service_table) {
d8cba25d TS	226	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	227	if (service->event_hld(accel_dev, ADF_EVENT_START)) {
66550304 AB	228	dev_err(&GET_DEV(accel_dev),
	229	"Failed to start service %s\n",
	230	service->name);
d8cba25d TS	231	return -EFAULT;
	232	}
	233	set_bit(accel_dev->accel_id, &service->start_status);
	234	}
	235
	236	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
	237	set_bit(ADF_STATUS_STARTED, &accel_dev->status);
	238
ed8ccaef TS	239	if (!list_empty(&accel_dev->crypto_list) &&
ed8ccaef TS	240	(qat_algs_register() \|\| qat_asym_algs_register())) {
66550304 AB	241	dev_err(&GET_DEV(accel_dev),
66550304 AB	242	"Failed to register crypto algs\n");
d8cba25d TS	243	set_bit(ADF_STATUS_STARTING, &accel_dev->status);
	244	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
	245	return -EFAULT;
	246	}
	247	return 0;
	248	}
	249	EXPORT_SYMBOL_GPL(adf_dev_start);
	250
	251	/**
	252	* adf_dev_stop() - Stop acceleration service for the given accel device
	253	* @accel_dev: Pointer to acceleration device.
	254	*
	255	* Function notifies all the registered services that the acceleration device
	256	* is shuting down.
	257	* To be used by QAT device specific drivers.
	258	*
ec0d6fa3	259	* Return: 0 on success, error code otherwise.
d8cba25d TS	260	*/
	261	int adf_dev_stop(struct adf_accel_dev *accel_dev)
	262	{
d8cba25d TS	263	struct service_hndl *service;
d8cba25d TS	264	struct list_head *list_itr;
53bc0251 AB	265	bool wait = false;
53bc0251 AB	266	int ret;
d8cba25d TS	267
	268	if (!adf_dev_started(accel_dev) &&
	269	!test_bit(ADF_STATUS_STARTING, &accel_dev->status)) {
	270	return 0;
	271	}
d8cba25d TS	272	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
	273	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
	274
ed8ccaef	275	if (!list_empty(&accel_dev->crypto_list) && qat_algs_unregister())
66550304 AB	276	dev_err(&GET_DEV(accel_dev),
66550304 AB	277	"Failed to unregister crypto algs\n");
d8cba25d	278
ed8ccaef TS	279	if (!list_empty(&accel_dev->crypto_list))
ed8ccaef TS	280	qat_asym_algs_unregister();
a9905320	281
d8cba25d TS	282	list_for_each(list_itr, &service_table) {
d8cba25d TS	283	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d TS	284	if (!test_bit(accel_dev->accel_id, &service->start_status))
	285	continue;
	286	ret = service->event_hld(accel_dev, ADF_EVENT_STOP);
	287	if (!ret) {
	288	clear_bit(accel_dev->accel_id, &service->start_status);
	289	} else if (ret == -EAGAIN) {
53bc0251	290	wait = true;
d8cba25d TS	291	clear_bit(accel_dev->accel_id, &service->start_status);
	292	}
	293	}
d8cba25d TS	294
	295	if (wait)
	296	msleep(100);
	297
fd98d692	298	if (test_bit(ADF_STATUS_AE_STARTED, &accel_dev->status)) {
d8cba25d	299	if (adf_ae_stop(accel_dev))
66550304	300	dev_err(&GET_DEV(accel_dev), "failed to stop AE\n");
d8cba25d TS	301	else
	302	clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
	303	}
	304
22e4dda0 AB	305	return 0;
	306	}
	307	EXPORT_SYMBOL_GPL(adf_dev_stop);
	308
	309	/**
	310	* adf_dev_shutdown() - shutdown acceleration services and data strucutures
	311	* @accel_dev: Pointer to acceleration device
	312	*
	313	* Cleanup the ring data structures and the admin comms and arbitration
	314	* services.
	315	*/
	316	void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
	317	{
	318	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
	319	struct service_hndl *service;
	320	struct list_head *list_itr;
	321
	322	if (!hw_data) {
	323	dev_err(&GET_DEV(accel_dev),
	324	"QAT: Failed to shutdown device - hw_data not set\n");
	325	return;
	326	}
	327
d8cba25d	328	if (test_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status)) {
b4e97050 TS	329	adf_ae_fw_release(accel_dev);
b4e97050 TS	330	clear_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
d8cba25d TS	331	}
	332
	333	if (test_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status)) {
	334	if (adf_ae_shutdown(accel_dev))
66550304 AB	335	dev_err(&GET_DEV(accel_dev),
66550304 AB	336	"Failed to shutdown Accel Engine\n");
d8cba25d TS	337	else
	338	clear_bit(ADF_STATUS_AE_INITIALISED,
	339	&accel_dev->status);
	340	}
	341
	342	list_for_each(list_itr, &service_table) {
	343	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d TS	344	if (!test_bit(accel_dev->accel_id, &service->init_status))
	345	continue;
	346	if (service->event_hld(accel_dev, ADF_EVENT_SHUTDOWN))
66550304 AB	347	dev_err(&GET_DEV(accel_dev),
	348	"Failed to shutdown service %s\n",
	349	service->name);
d8cba25d TS	350	else
	351	clear_bit(accel_dev->accel_id, &service->init_status);
	352	}
	353
	354	if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) {
	355	hw_data->free_irq(accel_dev);
	356	clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
	357	}
	358
	359	/* Delete configuration only if not restarting */
	360	if (!test_bit(ADF_STATUS_RESTARTING, &accel_dev->status))
	361	adf_cfg_del_all(accel_dev);
	362
22e4dda0 AB	363	if (hw_data->exit_arb)
	364	hw_data->exit_arb(accel_dev);
	365
	366	if (hw_data->exit_admin_comms)
	367	hw_data->exit_admin_comms(accel_dev);
	368
ed8ccaef	369	hw_data->disable_iov(accel_dev);
22e4dda0	370	adf_cleanup_etr_data(accel_dev);
d8cba25d	371	}
22e4dda0	372	EXPORT_SYMBOL_GPL(adf_dev_shutdown);
d8cba25d TS	373
	374	int adf_dev_restarting_notify(struct adf_accel_dev *accel_dev)
	375	{
	376	struct service_hndl *service;
	377	struct list_head *list_itr;
	378
	379	list_for_each(list_itr, &service_table) {
	380	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	381	if (service->event_hld(accel_dev, ADF_EVENT_RESTARTING))
66550304 AB	382	dev_err(&GET_DEV(accel_dev),
	383	"Failed to restart service %s.\n",
	384	service->name);
d8cba25d TS	385	}
	386	return 0;
	387	}
	388
	389	int adf_dev_restarted_notify(struct adf_accel_dev *accel_dev)
	390	{
	391	struct service_hndl *service;
	392	struct list_head *list_itr;
	393
	394	list_for_each(list_itr, &service_table) {
	395	service = list_entry(list_itr, struct service_hndl, list);
d8cba25d	396	if (service->event_hld(accel_dev, ADF_EVENT_RESTARTED))
66550304 AB	397	dev_err(&GET_DEV(accel_dev),
	398	"Failed to restart service %s.\n",
	399	service->name);
d8cba25d TS	400	}
	401	return 0;
	402	}