crypto: qat - Intel(R) QAT driver framework

This patch adds a common infractructure that will be used by all Intel(R)
QuickAssist Technology (QAT) devices.

v2 - added ./drivers/crypto/qat/Kconfig and ./drivers/crypto/qat/Makefile
v4 - splits common part into more, smaller patches
Acked-by: John Griffin <john.griffin@intel.com>
Reviewed-by: Bruce W. Allan <bruce.w.allan@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/qat/Kconfig

+config CRYPTO_DEV_QAT
+	tristate
+	select CRYPTO_AEAD
+	select CRYPTO_AUTHENC
+	select CRYPTO_ALGAPI
+	select CRYPTO_AES
+	select CRYPTO_CBC
+	select CRYPTO_SHA1
+	select CRYPTO_SHA256
+	select CRYPTO_SHA512
+
+config CRYPTO_DEV_QAT_DH895xCC
+	tristate "Support for Intel(R) DH895xCC"
+	depends on X86 && PCI
+	default n
+	select CRYPTO_DEV_QAT
+	help
+	  Support for Intel(R) DH895xcc with Intel(R) QuickAssist Technology
+	  for accelerating crypto and compression workloads.
+
+	  To compile this as a module, choose M here: the module
+	  will be called qat_dh895xcc.

drivers/crypto/qat/Makefile

+obj-$(CONFIG_CRYPTO_DEV_QAT) += qat_common/
+obj-$(CONFIG_CRYPTO_DEV_QAT_DH895xCC) += qat_dh895xcc/

drivers/crypto/qat/qat_common/Makefile

+obj-$(CONFIG_CRYPTO_DEV_QAT) += intel_qat.o
+intel_qat-objs := adf_cfg.o \
+	adf_ctl_drv.o \
+	adf_dev_mgr.o \
+	adf_init.o \
+	adf_accel_engine.o \
+	adf_aer.o \
+	adf_transport.o \
+	qat_crypto.o \
+	qat_algs.o \
+	qat_uclo.o \
+	qat_hal.o
+
+intel_qat-$(CONFIG_DEBUG_FS) += adf_transport_debug.o

drivers/crypto/qat/qat_common/adf_accel_devices.h

+/*
+  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.
+*/
+#ifndef ADF_ACCEL_DEVICES_H_
+#define ADF_ACCEL_DEVICES_H_
+#include <linux/module.h>
+#include <linux/atomic.h>
+#include <linux/list.h>
+#include <linux/proc_fs.h>
+#include "adf_cfg_common.h"
+
+#define PCI_VENDOR_ID_INTEL 0x8086
+#define ADF_DH895XCC_DEVICE_NAME "dh895xcc"
+#define ADF_DH895XCC_PCI_DEVICE_ID 0x435
+#define ADF_DH895XCC_PMISC_BAR 1
+#define ADF_DH895XCC_ETR_BAR 2
+#define ADF_PCI_MAX_BARS 3
+#define ADF_DEVICE_NAME_LENGTH 32
+#define ADF_ETR_MAX_RINGS_PER_BANK 16
+#define ADF_MAX_MSIX_VECTOR_NAME 16
+#define ADF_DEVICE_NAME_PREFIX "qat_"
+
+enum adf_accel_capabilities {
+	ADF_ACCEL_CAPABILITIES_NULL = 0,
+	ADF_ACCEL_CAPABILITIES_CRYPTO_SYMMETRIC = 1,
+	ADF_ACCEL_CAPABILITIES_CRYPTO_ASYMMETRIC = 2,
+	ADF_ACCEL_CAPABILITIES_CIPHER = 4,
+	ADF_ACCEL_CAPABILITIES_AUTHENTICATION = 8,
+	ADF_ACCEL_CAPABILITIES_COMPRESSION = 32,
+	ADF_ACCEL_CAPABILITIES_LZS_COMPRESSION = 64,
+	ADF_ACCEL_CAPABILITIES_RANDOM_NUMBER = 128
+};
+
+struct adf_bar {
+	resource_size_t base_addr;
+	void __iomem *virt_addr;
+	resource_size_t size;
+} __packed;
+
+struct adf_accel_msix {
+	struct msix_entry *entries;
+	char **names;
+} __packed;
+
+struct adf_accel_pci {
+	struct pci_dev *pci_dev;
+	struct adf_accel_msix msix_entries;
+	struct adf_bar pci_bars[ADF_PCI_MAX_BARS];
+	uint8_t revid;
+	uint8_t sku;
+} __packed;
+
+enum dev_state {
+	DEV_DOWN = 0,
+	DEV_UP
+};
+
+enum dev_sku_info {
+	DEV_SKU_1 = 0,
+	DEV_SKU_2,
+	DEV_SKU_3,
+	DEV_SKU_4,
+	DEV_SKU_UNKNOWN,
+};
+
+static inline const char *get_sku_info(enum dev_sku_info info)
+{
+	switch (info) {
+	case DEV_SKU_1:
+		return "SKU1";
+	case DEV_SKU_2:
+		return "SKU2";
+	case DEV_SKU_3:
+		return "SKU3";
+	case DEV_SKU_4:
+		return "SKU4";
+	case DEV_SKU_UNKNOWN:
+	default:
+		break;
+	}
+	return "Unknown SKU";
+}
+
+struct adf_hw_device_class {
+	const char *name;
+	const enum adf_device_type type;
+	uint32_t instances;
+} __packed;
+
+struct adf_cfg_device_data;
+struct adf_accel_dev;
+struct adf_etr_data;
+struct adf_etr_ring_data;
+
+struct adf_hw_device_data {
+	struct adf_hw_device_class *dev_class;
+	uint32_t (*get_accel_mask)(uint32_t fuse);
+	uint32_t (*get_ae_mask)(uint32_t fuse);
+	uint32_t (*get_misc_bar_id)(struct adf_hw_device_data *self);
+	uint32_t (*get_etr_bar_id)(struct adf_hw_device_data *self);
+	uint32_t (*get_num_aes)(struct adf_hw_device_data *self);
+	uint32_t (*get_num_accels)(struct adf_hw_device_data *self);
+	enum dev_sku_info (*get_sku)(struct adf_hw_device_data *self);
+	void (*hw_arb_ring_enable)(struct adf_etr_ring_data *ring);
+	void (*hw_arb_ring_disable)(struct adf_etr_ring_data *ring);
+	int (*alloc_irq)(struct adf_accel_dev *accel_dev);
+	void (*free_irq)(struct adf_accel_dev *accel_dev);
+	void (*enable_error_correction)(struct adf_accel_dev *accel_dev);
+	const char *fw_name;
+	uint32_t pci_dev_id;
+	uint32_t fuses;
+	uint32_t accel_capabilities_mask;
+	uint16_t accel_mask;
+	uint16_t ae_mask;
+	uint16_t tx_rings_mask;
+	uint8_t tx_rx_gap;
+	uint8_t instance_id;
+	uint8_t num_banks;
+	uint8_t num_accel;
+	uint8_t num_logical_accel;
+	uint8_t num_engines;
+} __packed;
+
+/* CSR write macro */
+#define ADF_CSR_WR(csr_base, csr_offset, val) \
+	__raw_writel(val, csr_base + csr_offset)
+
+/* CSR read macro */
+#define ADF_CSR_RD(csr_base, csr_offset) __raw_readl(csr_base + csr_offset)
+
+#define GET_DEV(accel_dev) ((accel_dev)->accel_pci_dev.pci_dev->dev)
+#define GET_BARS(accel_dev) ((accel_dev)->accel_pci_dev.pci_bars)
+#define GET_HW_DATA(accel_dev) (accel_dev->hw_device)
+#define GET_MAX_BANKS(accel_dev) (GET_HW_DATA(accel_dev)->num_banks)
+#define GET_MAX_ACCELENGINES(accel_dev) (GET_HW_DATA(accel_dev)->num_engines)
+#define accel_to_pci_dev(accel_ptr) accel_ptr->accel_pci_dev.pci_dev
+
+struct adf_admin_comms;
+struct icp_qat_fw_loader_handle;
+struct adf_fw_loader_data {
+	struct icp_qat_fw_loader_handle *fw_loader;
+	const struct firmware *uof_fw;
+};
+
+struct adf_accel_dev {
+	struct adf_etr_data *transport;
+	struct adf_hw_device_data *hw_device;
+	struct adf_cfg_device_data *cfg;
+	struct adf_fw_loader_data *fw_loader;
+	struct adf_admin_comms *admin;
+	struct list_head crypto_list;
+	unsigned long status;
+	atomic_t ref_count;
+	struct dentry *debugfs_dir;
+	struct list_head list;
+	struct module *owner;
+	uint8_t accel_id;
+	uint8_t numa_node;
+	struct adf_accel_pci accel_pci_dev;
+} __packed;
+#endif

drivers/crypto/qat/qat_common/adf_accel_engine.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/firmware.h>
+#include <linux/pci.h>
+#include "adf_cfg.h"
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "icp_qat_uclo.h"
+
+int adf_ae_fw_load(struct adf_accel_dev *accel_dev)
+{
+	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
+	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
+	void *uof_addr;
+	uint32_t uof_size;
+
+	if (request_firmware(&loader_data->uof_fw, hw_device->fw_name,
+			     &accel_dev->accel_pci_dev.pci_dev->dev)) {
+		pr_err("QAT: Failed to load firmware %s\n", hw_device->fw_name);
+		return -EFAULT;
+	}
+
+	uof_size = loader_data->uof_fw->size;
+	uof_addr = (void *)loader_data->uof_fw->data;
+	if (qat_uclo_map_uof_obj(loader_data->fw_loader, uof_addr, uof_size)) {
+		pr_err("QAT: Failed to map uof\n");
+		goto out_err;
+	}
+	if (qat_uclo_wr_all_uimage(loader_data->fw_loader)) {
+		pr_err("QAT: Failed to map uof\n");
+		goto out_err;
+	}
+	return 0;
+
+out_err:
+	release_firmware(loader_data->uof_fw);
+	return -EFAULT;
+}
+
+int adf_ae_fw_release(struct adf_accel_dev *accel_dev)
+{
+	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
+
+	release_firmware(loader_data->uof_fw);
+	qat_uclo_del_uof_obj(loader_data->fw_loader);
+	qat_hal_deinit(loader_data->fw_loader);
+	loader_data->fw_loader = NULL;
+	return 0;
+}
+
+int adf_ae_start(struct adf_accel_dev *accel_dev)
+{
+	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
+	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+	uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
+
+	for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
+		if (hw_data->ae_mask & (1 << ae)) {
+			qat_hal_start(loader_data->fw_loader, ae, 0xFF);
+			ae_ctr++;
+		}
+	}
+	pr_info("QAT: qat_dev%d started %d acceleration engines\n",
+		accel_dev->accel_id, ae_ctr);
+	return 0;
+}
+
+int adf_ae_stop(struct adf_accel_dev *accel_dev)
+{
+	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
+	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+	uint32_t ae_ctr, ae, max_aes = GET_MAX_ACCELENGINES(accel_dev);
+
+	for (ae = 0, ae_ctr = 0; ae < max_aes; ae++) {
+		if (hw_data->ae_mask & (1 << ae)) {
+			qat_hal_stop(loader_data->fw_loader, ae, 0xFF);
+			ae_ctr++;
+		}
+	}
+	pr_info("QAT: qat_dev%d stopped %d acceleration engines\n",
+		accel_dev->accel_id, ae_ctr);
+	return 0;
+}
+
+static int adf_ae_reset(struct adf_accel_dev *accel_dev, int ae)
+{
+	struct adf_fw_loader_data *loader_data = accel_dev->fw_loader;
+
+	qat_hal_reset(loader_data->fw_loader);
+	if (qat_hal_clr_reset(loader_data->fw_loader))
+		return -EFAULT;
+
+	return 0;
+}
+
+int adf_ae_init(struct adf_accel_dev *accel_dev)
+{
+	struct adf_fw_loader_data *loader_data;
+
+	loader_data = kzalloc(sizeof(*loader_data), GFP_KERNEL);
+	if (!loader_data)
+		return -ENOMEM;
+
+	accel_dev->fw_loader = loader_data;
+	if (qat_hal_init(accel_dev)) {
+		pr_err("QAT: Failed to init the AEs\n");
+		kfree(loader_data);
+		return -EFAULT;
+	}
+	if (adf_ae_reset(accel_dev, 0)) {
+		pr_err("QAT: Failed to reset the AEs\n");
+		qat_hal_deinit(loader_data->fw_loader);
+		kfree(loader_data);
+		return -EFAULT;
+	}
+	return 0;
+}
+
+int adf_ae_shutdown(struct adf_accel_dev *accel_dev)
+{
+	kfree(accel_dev->fw_loader);
+	accel_dev->fw_loader = NULL;
+	return 0;
+}

drivers/crypto/qat/qat_common/adf_aer.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/kernel.h>
+#include <linux/pci.h>
+#include <linux/aer.h>
+#include <linux/completion.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+
+static struct workqueue_struct *device_reset_wq;
+
+static pci_ers_result_t adf_error_detected(struct pci_dev *pdev,
+					   pci_channel_state_t state)
+{
+	struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
+
+	pr_info("QAT: Acceleration driver hardware error detected.\n");
+	if (!accel_dev) {
+		pr_err("QAT: Can't find acceleration device\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+
+	if (state == pci_channel_io_perm_failure) {
+		pr_err("QAT: Can't recover from device error\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/* reset dev data */
+struct adf_reset_dev_data {
+	int mode;
+	struct adf_accel_dev *accel_dev;
+	struct completion compl;
+	struct work_struct reset_work;
+};
+
+#define PPDSTAT_OFFSET 0x7E
+static void adf_dev_restore(struct adf_accel_dev *accel_dev)
+{
+	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+	struct pci_dev *parent = pdev->bus->self;
+	uint16_t ppdstat = 0, bridge_ctl = 0;
+	int pending = 0;
+
+	pr_info("QAT: Reseting device qat_dev%d\n", accel_dev->accel_id);
+	pci_read_config_word(pdev, PPDSTAT_OFFSET, &ppdstat);
+	pending = ppdstat & PCI_EXP_DEVSTA_TRPND;
+	if (pending) {
+		int ctr = 0;
+		do {
+			msleep(100);
+			pci_read_config_word(pdev, PPDSTAT_OFFSET, &ppdstat);
+			pending = ppdstat & PCI_EXP_DEVSTA_TRPND;
+		} while (pending && ctr++ < 10);
+	}
+
+	if (pending)
+		pr_info("QAT: Transaction still in progress. Proceeding\n");
+
+	pci_read_config_word(parent, PCI_BRIDGE_CONTROL, &bridge_ctl);
+	bridge_ctl |= PCI_BRIDGE_CTL_BUS_RESET;
+	pci_write_config_word(parent, PCI_BRIDGE_CONTROL, bridge_ctl);
+	msleep(100);
+	bridge_ctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
+	pci_write_config_word(parent, PCI_BRIDGE_CONTROL, bridge_ctl);
+	msleep(100);
+	pci_restore_state(pdev);
+	pci_save_state(pdev);
+}
+
+static void adf_device_reset_worker(struct work_struct *work)
+{
+	struct adf_reset_dev_data *reset_data =
+		  container_of(work, struct adf_reset_dev_data, reset_work);
+	struct adf_accel_dev *accel_dev = reset_data->accel_dev;
+
+	adf_dev_restarting_notify(accel_dev);
+	adf_dev_stop(accel_dev);
+	adf_dev_restore(accel_dev);
+	if (adf_dev_start(accel_dev)) {
+		/* The device hanged and we can't restart it so stop here */
+		dev_err(&GET_DEV(accel_dev), "Restart device failed\n");
+		kfree(reset_data);
+		WARN(1, "QAT: device restart failed. Device is unusable\n");
+		return;
+	}
+	adf_dev_restarted_notify(accel_dev);
+	clear_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
+
+	/* The dev is back alive. Notify the caller if in sync mode */
+	if (reset_data->mode == ADF_DEV_RESET_SYNC)
+		complete(&reset_data->compl);
+	else
+		kfree(reset_data);
+}
+
+static int adf_dev_aer_schedule_reset(struct adf_accel_dev *accel_dev,
+				      enum adf_dev_reset_mode mode)
+{
+	struct adf_reset_dev_data *reset_data;
+
+	if (adf_dev_started(accel_dev) &&
+	    !test_bit(ADF_STATUS_RESTARTING, &accel_dev->status))
+		return 0;
+
+	set_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
+	reset_data = kzalloc(sizeof(*reset_data), GFP_ATOMIC);
+	if (!reset_data)
+		return -ENOMEM;
+	reset_data->accel_dev = accel_dev;
+	init_completion(&reset_data->compl);
+	reset_data->mode = mode;
+	INIT_WORK(&reset_data->reset_work, adf_device_reset_worker);
+	queue_work(device_reset_wq, &reset_data->reset_work);
+
+	/* If in sync mode wait for the result */
+	if (mode == ADF_DEV_RESET_SYNC) {
+		int ret = 0;
+		/* Maximum device reset time is 10 seconds */
+		unsigned long wait_jiffies = msecs_to_jiffies(10000);
+		unsigned long timeout = wait_for_completion_timeout(
+				   &reset_data->compl, wait_jiffies);
+		if (!timeout) {
+			pr_err("QAT: Reset device timeout expired\n");
+			ret = -EFAULT;
+		}
+		kfree(reset_data);
+		return ret;
+	}
+	return 0;
+}
+
+static pci_ers_result_t adf_slot_reset(struct pci_dev *pdev)
+{
+	struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
+
+	if (!accel_dev) {
+		pr_err("QAT: Can't find acceleration device\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+	pci_cleanup_aer_uncorrect_error_status(pdev);
+	if (adf_dev_aer_schedule_reset(accel_dev, ADF_DEV_RESET_SYNC))
+		return PCI_ERS_RESULT_DISCONNECT;
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+static void adf_resume(struct pci_dev *pdev)
+{
+	pr_info("QAT: Acceleration driver reset completed\n");
+	pr_info("QAT: Device is up and runnig\n");
+}
+
+static struct pci_error_handlers adf_err_handler = {
+	.error_detected = adf_error_detected,
+	.slot_reset = adf_slot_reset,
+	.resume = adf_resume,
+};
+
+/**
+ * adf_enable_aer() - Enable Advance Error Reporting for acceleration device
+ * @accel_dev:  Pointer to acceleration device.
+ * @adf:        PCI device driver owning the given acceleration device.
+ *
+ * Function enables PCI Advance Error Reporting for the
+ * QAT acceleration device accel_dev.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 0 on success, error code othewise.
+ */
+int adf_enable_aer(struct adf_accel_dev *accel_dev, struct pci_driver *adf)
+{
+	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+
+	adf->err_handler = &adf_err_handler;
+	pci_enable_pcie_error_reporting(pdev);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_enable_aer);
+
+/**
+ * adf_disable_aer() - Enable Advance Error Reporting for acceleration device
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function disables PCI Advance Error Reporting for the
+ * QAT acceleration device accel_dev.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: void
+ */
+void adf_disable_aer(struct adf_accel_dev *accel_dev)
+{
+	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
+
+	pci_disable_pcie_error_reporting(pdev);
+}
+EXPORT_SYMBOL_GPL(adf_disable_aer);
+
+int adf_init_aer(void)
+{
+	device_reset_wq = create_workqueue("qat_device_reset_wq");
+	return (device_reset_wq == NULL) ? -EFAULT : 0;
+}
+
+void adf_exit_aer(void)
+{
+	if (device_reset_wq)
+		destroy_workqueue(device_reset_wq);
+	device_reset_wq = NULL;
+}

drivers/crypto/qat/qat_common/adf_cfg.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/slab.h>
+#include <linux/list.h>
+#include <linux/seq_file.h>
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_cfg.h"
+
+static DEFINE_MUTEX(qat_cfg_read_lock);
+
+static void *qat_dev_cfg_start(struct seq_file *sfile, loff_t *pos)
+{
+	struct adf_cfg_device_data *dev_cfg = sfile->private;
+	mutex_lock(&qat_cfg_read_lock);
+	return seq_list_start(&dev_cfg->sec_list, *pos);
+}
+
+static int qat_dev_cfg_show(struct seq_file *sfile, void *v)
+{
+	struct list_head *list;
+	struct adf_cfg_section *sec =
+				list_entry(v, struct adf_cfg_section, list);
+
+	seq_printf(sfile, "[%s]\n", sec->name);
+	list_for_each(list, &sec->param_head) {
+		struct adf_cfg_key_val *ptr =
+			list_entry(list, struct adf_cfg_key_val, list);
+		seq_printf(sfile, "%s = %s\n", ptr->key, ptr->val);
+	}
+	return 0;
+}
+
+static void *qat_dev_cfg_next(struct seq_file *sfile, void *v, loff_t *pos)
+{
+	struct adf_cfg_device_data *dev_cfg = sfile->private;
+	return seq_list_next(v, &dev_cfg->sec_list, pos);
+}
+
+static void qat_dev_cfg_stop(struct seq_file *sfile, void *v)
+{
+	mutex_unlock(&qat_cfg_read_lock);
+}
+
+static const struct seq_operations qat_dev_cfg_sops = {
+	.start = qat_dev_cfg_start,
+	.next = qat_dev_cfg_next,
+	.stop = qat_dev_cfg_stop,
+	.show = qat_dev_cfg_show
+};
+
+static int qat_dev_cfg_open(struct inode *inode, struct file *file)
+{
+	int ret = seq_open(file, &qat_dev_cfg_sops);
+
+	if (!ret) {
+		struct seq_file *seq_f = file->private_data;
+		seq_f->private = inode->i_private;
+	}
+	return ret;
+}
+
+static const struct file_operations qat_dev_cfg_fops = {
+	.open = qat_dev_cfg_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = seq_release
+};
+
+/**
+ * adf_cfg_dev_add() - Create an acceleration device configuration table.
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function creates a configuration table for the given acceleration device.
+ * The table stores device specific config values.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 0 on success, error code othewise.
+ */
+int adf_cfg_dev_add(struct adf_accel_dev *accel_dev)
+{
+	struct adf_cfg_device_data *dev_cfg_data;
+
+	dev_cfg_data = kzalloc(sizeof(*dev_cfg_data), GFP_KERNEL);
+	if (!dev_cfg_data)
+		return -ENOMEM;
+	INIT_LIST_HEAD(&dev_cfg_data->sec_list);
+	init_rwsem(&dev_cfg_data->lock);
+	accel_dev->cfg = dev_cfg_data;
+
+	/* accel_dev->debugfs_dir should always be non-NULL here */
+	dev_cfg_data->debug = debugfs_create_file("dev_cfg", S_IRUSR,
+						  accel_dev->debugfs_dir,
+						  dev_cfg_data,
+						  &qat_dev_cfg_fops);
+	if (!dev_cfg_data->debug) {
+		pr_err("QAT: Failed to create qat cfg debugfs entry.\n");
+		kfree(dev_cfg_data);
+		accel_dev->cfg = NULL;
+		return -EFAULT;
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_cfg_dev_add);
+
+static void adf_cfg_section_del_all(struct list_head *head);
+
+void adf_cfg_del_all(struct adf_accel_dev *accel_dev)
+{
+	struct adf_cfg_device_data *dev_cfg_data = accel_dev->cfg;
+
+	down_write(&dev_cfg_data->lock);
+	adf_cfg_section_del_all(&dev_cfg_data->sec_list);
+	up_write(&dev_cfg_data->lock);
+}
+
+/**
+ * adf_cfg_dev_remove() - Clears acceleration device configuration table.
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function removes configuration table from the given acceleration device
+ * and frees all allocated memory.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: void
+ */
+void adf_cfg_dev_remove(struct adf_accel_dev *accel_dev)
+{
+	struct adf_cfg_device_data *dev_cfg_data = accel_dev->cfg;
+
+	down_write(&dev_cfg_data->lock);
+	adf_cfg_section_del_all(&dev_cfg_data->sec_list);
+	up_write(&dev_cfg_data->lock);
+	debugfs_remove(dev_cfg_data->debug);
+	kfree(dev_cfg_data);
+	accel_dev->cfg = NULL;
+}
+EXPORT_SYMBOL_GPL(adf_cfg_dev_remove);
+
+static void adf_cfg_keyval_add(struct adf_cfg_key_val *new,
+			       struct adf_cfg_section *sec)
+{
+	list_add_tail(&new->list, &sec->param_head);
+}
+
+static void adf_cfg_keyval_del_all(struct list_head *head)
+{
+	struct list_head *list_ptr, *tmp;
+
+	list_for_each_prev_safe(list_ptr, tmp, head) {
+		struct adf_cfg_key_val *ptr =
+			list_entry(list_ptr, struct adf_cfg_key_val, list);
+		list_del(list_ptr);
+		kfree(ptr);
+	}
+}
+
+static void adf_cfg_section_del_all(struct list_head *head)
+{
+	struct adf_cfg_section *ptr;
+	struct list_head *list, *tmp;
+
+	list_for_each_prev_safe(list, tmp, head) {
+		ptr = list_entry(list, struct adf_cfg_section, list);
+		adf_cfg_keyval_del_all(&ptr->param_head);
+		list_del(list);
+		kfree(ptr);
+	}
+}
+
+static struct adf_cfg_key_val *adf_cfg_key_value_find(struct adf_cfg_section *s,
+						      const char *key)
+{
+	struct list_head *list;
+
+	list_for_each(list, &s->param_head) {
+		struct adf_cfg_key_val *ptr =
+			list_entry(list, struct adf_cfg_key_val, list);
+		if (!strcmp(ptr->key, key))
+			return ptr;
+	}
+	return NULL;
+}
+
+static struct adf_cfg_section *adf_cfg_sec_find(struct adf_accel_dev *accel_dev,
+						const char *sec_name)
+{
+	struct adf_cfg_device_data *cfg = accel_dev->cfg;
+	struct list_head *list;
+
+	list_for_each(list, &cfg->sec_list) {
+		struct adf_cfg_section *ptr =
+			list_entry(list, struct adf_cfg_section, list);
+		if (!strcmp(ptr->name, sec_name))
+			return ptr;
+	}
+	return NULL;
+}
+
+static int adf_cfg_key_val_get(struct adf_accel_dev *accel_dev,
+			       const char *sec_name,
+			       const char *key_name,
+			       char *val)
+{
+	struct adf_cfg_section *sec = adf_cfg_sec_find(accel_dev, sec_name);
+	struct adf_cfg_key_val *keyval = NULL;
+
+	if (sec)
+		keyval = adf_cfg_key_value_find(sec, key_name);
+	if (keyval) {
+		memcpy(val, keyval->val, ADF_CFG_MAX_VAL_LEN_IN_BYTES);
+		return 0;
+	}
+	return -1;
+}
+
+/**
+ * adf_cfg_add_key_value_param() - Add key-value config entry to config table.
+ * @accel_dev:  Pointer to acceleration device.
+ * @section_name: Name of the section where the param will be added
+ * @key: The key string
+ * @val: Value pain for the given @key
+ * @type: Type - string, int or address
+ *
+ * Function adds configuration key - value entry in the appropriate section
+ * in the given acceleration device
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 0 on success, error code othewise.
+ */
+int adf_cfg_add_key_value_param(struct adf_accel_dev *accel_dev,
+				const char *section_name,
+				const char *key, const void *val,
+				enum adf_cfg_val_type type)
+{
+	struct adf_cfg_device_data *cfg = accel_dev->cfg;
+	struct adf_cfg_key_val *key_val;
+	struct adf_cfg_section *section = adf_cfg_sec_find(accel_dev,
+							   section_name);
+	if (!section)
+		return -EFAULT;
+
+	key_val = kzalloc(sizeof(*key_val), GFP_KERNEL);
+	if (!key_val)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&key_val->list);
+	strlcpy(key_val->key, key, sizeof(key_val->key));
+
+	if (type == ADF_DEC) {
+		snprintf(key_val->val, ADF_CFG_MAX_VAL_LEN_IN_BYTES,
+			 "%ld", (*((long *)val)));
+	} else if (type == ADF_STR) {
+		strlcpy(key_val->val, (char *)val, sizeof(key_val->val));
+	} else if (type == ADF_HEX) {
+		snprintf(key_val->val, ADF_CFG_MAX_VAL_LEN_IN_BYTES,
+			 "0x%lx", (unsigned long)val);
+	} else {
+		pr_err("QAT: Unknown type given.\n");
+		kfree(key_val);
+		return -1;
+	}
+	key_val->type = type;
+	down_write(&cfg->lock);
+	adf_cfg_keyval_add(key_val, section);
+	up_write(&cfg->lock);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_cfg_add_key_value_param);
+
+/**
+ * adf_cfg_section_add() - Add config section entry to config table.
+ * @accel_dev:  Pointer to acceleration device.
+ * @name: Name of the section
+ *
+ * Function adds configuration section where key - value entries
+ * will be stored.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 0 on success, error code othewise.
+ */
+int adf_cfg_section_add(struct adf_accel_dev *accel_dev, const char *name)
+{
+	struct adf_cfg_device_data *cfg = accel_dev->cfg;
+	struct adf_cfg_section *sec = adf_cfg_sec_find(accel_dev, name);
+
+	if (sec)
+		return 0;
+
+	sec = kzalloc(sizeof(*sec), GFP_KERNEL);
+	if (!sec)
+		return -ENOMEM;
+
+	strlcpy(sec->name, name, sizeof(sec->name));
+	INIT_LIST_HEAD(&sec->param_head);
+	down_write(&cfg->lock);
+	list_add_tail(&sec->list, &cfg->sec_list);
+	up_write(&cfg->lock);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_cfg_section_add);
+
+int adf_cfg_get_param_value(struct adf_accel_dev *accel_dev,
+			    const char *section, const char *name,
+			    char *value)
+{
+	struct adf_cfg_device_data *cfg = accel_dev->cfg;
+	int ret;
+
+	down_read(&cfg->lock);
+	ret = adf_cfg_key_val_get(accel_dev, section, name, value);
+	up_read(&cfg->lock);
+	return ret;
+}

drivers/crypto/qat/qat_common/adf_cfg.h

+/*
+  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.
+*/
+#ifndef ADF_CFG_H_
+#define ADF_CFG_H_
+
+#include <linux/list.h>
+#include <linux/rwsem.h>
+#include <linux/debugfs.h>
+#include "adf_accel_devices.h"
+#include "adf_cfg_common.h"
+#include "adf_cfg_strings.h"
+
+struct adf_cfg_key_val {
+	char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
+	char val[ADF_CFG_MAX_VAL_LEN_IN_BYTES];
+	enum adf_cfg_val_type type;
+	struct list_head list;
+};
+
+struct adf_cfg_section {
+	char name[ADF_CFG_MAX_SECTION_LEN_IN_BYTES];
+	struct list_head list;
+	struct list_head param_head;
+};
+
+struct adf_cfg_device_data {
+	struct list_head sec_list;
+	struct dentry *debug;
+	struct rw_semaphore lock;
+};
+
+int adf_cfg_dev_add(struct adf_accel_dev *accel_dev);
+void adf_cfg_dev_remove(struct adf_accel_dev *accel_dev);
+int adf_cfg_section_add(struct adf_accel_dev *accel_dev, const char *name);
+void adf_cfg_del_all(struct adf_accel_dev *accel_dev);
+int adf_cfg_add_key_value_param(struct adf_accel_dev *accel_dev,
+				const char *section_name,
+				const char *key, const void *val,
+				enum adf_cfg_val_type type);
+int adf_cfg_get_param_value(struct adf_accel_dev *accel_dev,
+			    const char *section, const char *name, char *value);
+
+#endif

drivers/crypto/qat/qat_common/adf_cfg_common.h

+/*
+  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.
+*/
+#ifndef ADF_CFG_COMMON_H_
+#define ADF_CFG_COMMON_H_
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define ADF_CFG_MAX_STR_LEN 64
+#define ADF_CFG_MAX_KEY_LEN_IN_BYTES ADF_CFG_MAX_STR_LEN
+#define ADF_CFG_MAX_VAL_LEN_IN_BYTES ADF_CFG_MAX_STR_LEN
+#define ADF_CFG_MAX_SECTION_LEN_IN_BYTES ADF_CFG_MAX_STR_LEN
+#define ADF_CFG_BASE_DEC 10
+#define ADF_CFG_BASE_HEX 16
+#define ADF_CFG_ALL_DEVICES 0xFE
+#define ADF_CFG_NO_DEVICE 0xFF
+#define ADF_CFG_AFFINITY_WHATEVER 0xFF
+#define MAX_DEVICE_NAME_SIZE 32
+#define ADF_MAX_DEVICES 32
+
+enum adf_cfg_val_type {
+	ADF_DEC,
+	ADF_HEX,
+	ADF_STR
+};
+
+enum adf_device_type {
+	DEV_UNKNOWN = 0,
+	DEV_DH895XCC,
+};
+
+struct adf_dev_status_info {
+	enum adf_device_type type;
+	uint8_t accel_id;
+	uint8_t instance_id;
+	uint8_t num_ae;
+	uint8_t num_accel;
+	uint8_t num_logical_accel;
+	uint8_t banks_per_accel;
+	uint8_t state;
+	uint8_t bus;
+	uint8_t dev;
+	uint8_t fun;
+	char name[MAX_DEVICE_NAME_SIZE];
+};
+
+#define ADF_CTL_IOC_MAGIC 'a'
+#define IOCTL_CONFIG_SYS_RESOURCE_PARAMETERS _IOW(ADF_CTL_IOC_MAGIC, 0, \
+		struct adf_user_cfg_ctl_data)
+#define IOCTL_STOP_ACCEL_DEV _IOW(ADF_CTL_IOC_MAGIC, 1, \
+		struct adf_user_cfg_ctl_data)
+#define IOCTL_START_ACCEL_DEV _IOW(ADF_CTL_IOC_MAGIC, 2, \
+		struct adf_user_cfg_ctl_data)
+#define IOCTL_STATUS_ACCEL_DEV _IOW(ADF_CTL_IOC_MAGIC, 3, uint32_t)
+#define IOCTL_GET_NUM_DEVICES _IOW(ADF_CTL_IOC_MAGIC, 4, int32_t)
+#endif

drivers/crypto/qat/qat_common/adf_cfg_strings.h

+/*
+  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.
+*/
+#ifndef ADF_CFG_STRINGS_H_
+#define ADF_CFG_STRINGS_H_
+
+#define ADF_GENERAL_SEC "GENERAL"
+#define ADF_KERNEL_SEC "KERNEL"
+#define ADF_ACCEL_SEC "Accelerator"
+#define ADF_NUM_CY "NumberCyInstances"
+#define ADF_NUM_DC "NumberDcInstances"
+#define ADF_RING_SYM_SIZE "NumConcurrentSymRequests"
+#define ADF_RING_ASYM_SIZE "NumConcurrentAsymRequests"
+#define ADF_RING_DC_SIZE "NumConcurrentRequests"
+#define ADF_RING_ASYM_TX "RingAsymTx"
+#define ADF_RING_SYM_TX "RingSymTx"
+#define ADF_RING_RND_TX "RingNrbgTx"
+#define ADF_RING_ASYM_RX "RingAsymRx"
+#define ADF_RING_SYM_RX "RinSymRx"
+#define ADF_RING_RND_RX "RingNrbgRx"
+#define ADF_RING_DC_TX "RingTx"
+#define ADF_RING_DC_RX "RingRx"
+#define ADF_ETRMGR_BANK "Bank"
+#define ADF_RING_BANK_NUM "BankNumber"
+#define ADF_CY "Cy"
+#define ADF_DC "Dc"
+#define ADF_ETRMGR_COALESCING_ENABLED "InterruptCoalescingEnabled"
+#define ADF_ETRMGR_COALESCING_ENABLED_FORMAT \
+	ADF_ETRMGR_BANK"%d"ADF_ETRMGR_COALESCING_ENABLED
+#define ADF_ETRMGR_COALESCE_TIMER "InterruptCoalescingTimerNs"
+#define ADF_ETRMGR_COALESCE_TIMER_FORMAT \
+	ADF_ETRMGR_BANK"%d"ADF_ETRMGR_COALESCE_TIMER
+#define ADF_ETRMGR_COALESCING_MSG_ENABLED "InterruptCoalescingNumResponses"
+#define ADF_ETRMGR_COALESCING_MSG_ENABLED_FORMAT \
+	ADF_ETRMGR_BANK"%d"ADF_ETRMGR_COALESCING_MSG_ENABLED
+#define ADF_ETRMGR_CORE_AFFINITY "CoreAffinity"
+#define ADF_ETRMGR_CORE_AFFINITY_FORMAT \
+	ADF_ETRMGR_BANK"%d"ADF_ETRMGR_CORE_AFFINITY
+#define ADF_ACCEL_STR "Accelerator%d"
+#endif

drivers/crypto/qat/qat_common/adf_cfg_user.h

+/*
+  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.
+*/
+#ifndef ADF_CFG_USER_H_
+#define ADF_CFG_USER_H_
+
+#include "adf_cfg_common.h"
+#include "adf_cfg_strings.h"
+
+struct adf_user_cfg_key_val {
+	char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
+	char val[ADF_CFG_MAX_VAL_LEN_IN_BYTES];
+	union {
+		char *user_val_ptr;
+		uint64_t padding1;
+	};
+	union {
+		struct adf_user_cfg_key_val *prev;
+		uint64_t padding2;
+	};
+	union {
+		struct adf_user_cfg_key_val *next;
+		uint64_t padding3;
+	};
+	enum adf_cfg_val_type type;
+};
+
+struct adf_user_cfg_section {
+	char name[ADF_CFG_MAX_SECTION_LEN_IN_BYTES];
+	union {
+		struct adf_user_cfg_key_val *params;
+		uint64_t padding1;
+	};
+	union {
+		struct adf_user_cfg_section *prev;
+		uint64_t padding2;
+	};
+	union {
+		struct adf_user_cfg_section *next;
+		uint64_t padding3;
+	};
+};
+
+struct adf_user_cfg_ctl_data {
+	union {
+		struct adf_user_cfg_section *config_section;
+		uint64_t padding;
+	};
+	uint8_t device_id;
+};
+#endif

drivers/crypto/qat/qat_common/adf_common_drv.h

+/*
+  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.
+*/
+#ifndef ADF_DRV_H
+#define ADF_DRV_H
+
+#include <linux/list.h>
+#include <linux/pci.h>
+#include "adf_accel_devices.h"
+#include "icp_qat_fw_loader_handle.h"
+#include "icp_qat_hal.h"
+
+#define ADF_STATUS_RESTARTING 0
+#define ADF_STATUS_STARTING 1
+#define ADF_STATUS_CONFIGURED 2
+#define ADF_STATUS_STARTED 3
+#define ADF_STATUS_AE_INITIALISED 4
+#define ADF_STATUS_AE_UCODE_LOADED 5
+#define ADF_STATUS_AE_STARTED 6
+#define ADF_STATUS_ORPHAN_TH_RUNNING 7
+#define ADF_STATUS_IRQ_ALLOCATED 8
+
+enum adf_dev_reset_mode {
+	ADF_DEV_RESET_ASYNC = 0,
+	ADF_DEV_RESET_SYNC
+};
+
+enum adf_event {
+	ADF_EVENT_INIT = 0,
+	ADF_EVENT_START,
+	ADF_EVENT_STOP,
+	ADF_EVENT_SHUTDOWN,
+	ADF_EVENT_RESTARTING,
+	ADF_EVENT_RESTARTED,
+};
+
+struct service_hndl {
+	int (*event_hld)(struct adf_accel_dev *accel_dev,
+			 enum adf_event event);
+	unsigned long init_status;
+	unsigned long start_status;
+	char *name;
+	struct list_head list;
+	int admin;
+};
+
+int adf_service_register(struct service_hndl *service);
+int adf_service_unregister(struct service_hndl *service);
+
+int adf_dev_init(struct adf_accel_dev *accel_dev);
+int adf_dev_start(struct adf_accel_dev *accel_dev);
+int adf_dev_stop(struct adf_accel_dev *accel_dev);
+int adf_dev_shutdown(struct adf_accel_dev *accel_dev);
+
+int adf_ctl_dev_register(void);
+void adf_ctl_dev_unregister(void);
+int adf_processes_dev_register(void);
+void adf_processes_dev_unregister(void);
+
+int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev);
+void adf_devmgr_rm_dev(struct adf_accel_dev *accel_dev);
+struct list_head *adf_devmgr_get_head(void);
+struct adf_accel_dev *adf_devmgr_get_dev_by_id(uint32_t id);
+struct adf_accel_dev *adf_devmgr_get_first(void);
+struct adf_accel_dev *adf_devmgr_pci_to_accel_dev(struct pci_dev *pci_dev);
+int adf_devmgr_verify_id(uint32_t id);
+void adf_devmgr_get_num_dev(uint32_t *num);
+int adf_devmgr_in_reset(struct adf_accel_dev *accel_dev);
+int adf_dev_started(struct adf_accel_dev *accel_dev);
+int adf_dev_restarting_notify(struct adf_accel_dev *accel_dev);
+int adf_dev_restarted_notify(struct adf_accel_dev *accel_dev);
+int adf_ae_init(struct adf_accel_dev *accel_dev);
+int adf_ae_shutdown(struct adf_accel_dev *accel_dev);
+int adf_ae_fw_load(struct adf_accel_dev *accel_dev);
+int adf_ae_fw_release(struct adf_accel_dev *accel_dev);
+int adf_ae_start(struct adf_accel_dev *accel_dev);
+int adf_ae_stop(struct adf_accel_dev *accel_dev);
+
+int adf_enable_aer(struct adf_accel_dev *accel_dev, struct pci_driver *adf);
+void adf_disable_aer(struct adf_accel_dev *accel_dev);
+int adf_init_aer(void);
+void adf_exit_aer(void);
+
+int adf_dev_get(struct adf_accel_dev *accel_dev);
+void adf_dev_put(struct adf_accel_dev *accel_dev);
+int adf_dev_in_use(struct adf_accel_dev *accel_dev);
+int adf_init_etr_data(struct adf_accel_dev *accel_dev);
+void adf_cleanup_etr_data(struct adf_accel_dev *accel_dev);
+int qat_crypto_register(void);
+int qat_crypto_unregister(void);
+struct qat_crypto_instance *qat_crypto_get_instance_node(int node);
+void qat_crypto_put_instance(struct qat_crypto_instance *inst);
+void qat_alg_callback(void *resp);
+int qat_algs_init(void);
+void qat_algs_exit(void);
+int qat_algs_register(void);
+int qat_algs_unregister(void);
+
+int qat_hal_init(struct adf_accel_dev *accel_dev);
+void qat_hal_deinit(struct icp_qat_fw_loader_handle *handle);
+void qat_hal_start(struct icp_qat_fw_loader_handle *handle, unsigned char ae,
+		   unsigned int ctx_mask);
+void qat_hal_stop(struct icp_qat_fw_loader_handle *handle, unsigned char ae,
+		  unsigned int ctx_mask);
+void qat_hal_reset(struct icp_qat_fw_loader_handle *handle);
+int qat_hal_clr_reset(struct icp_qat_fw_loader_handle *handle);
+void qat_hal_set_live_ctx(struct icp_qat_fw_loader_handle *handle,
+			  unsigned char ae, unsigned int ctx_mask);
+int qat_hal_set_ae_lm_mode(struct icp_qat_fw_loader_handle *handle,
+			   unsigned char ae, enum icp_qat_uof_regtype lm_type,
+			   unsigned char mode);
+int qat_hal_set_ae_ctx_mode(struct icp_qat_fw_loader_handle *handle,
+			    unsigned char ae, unsigned char mode);
+int qat_hal_set_ae_nn_mode(struct icp_qat_fw_loader_handle *handle,
+			   unsigned char ae, unsigned char mode);
+void qat_hal_set_pc(struct icp_qat_fw_loader_handle *handle,
+		    unsigned char ae, unsigned int ctx_mask, unsigned int upc);
+void qat_hal_wr_uwords(struct icp_qat_fw_loader_handle *handle,
+		       unsigned char ae, unsigned int uaddr,
+		       unsigned int words_num, uint64_t *uword);
+void qat_hal_wr_umem(struct icp_qat_fw_loader_handle *handle, unsigned char ae,
+		     unsigned int uword_addr, unsigned int words_num,
+		     unsigned int *data);
+int qat_hal_get_ins_num(void);
+int qat_hal_batch_wr_lm(struct icp_qat_fw_loader_handle *handle,
+			unsigned char ae,
+			struct icp_qat_uof_batch_init *lm_init_header);
+int qat_hal_init_gpr(struct icp_qat_fw_loader_handle *handle,
+		     unsigned char ae, unsigned char ctx_mask,
+		     enum icp_qat_uof_regtype reg_type,
+		     unsigned short reg_num, unsigned int regdata);
+int qat_hal_init_wr_xfer(struct icp_qat_fw_loader_handle *handle,
+			 unsigned char ae, unsigned char ctx_mask,
+			 enum icp_qat_uof_regtype reg_type,
+			 unsigned short reg_num, unsigned int regdata);
+int qat_hal_init_rd_xfer(struct icp_qat_fw_loader_handle *handle,
+			 unsigned char ae, unsigned char ctx_mask,
+			 enum icp_qat_uof_regtype reg_type,
+			 unsigned short reg_num, unsigned int regdata);
+int qat_hal_init_nn(struct icp_qat_fw_loader_handle *handle,
+		    unsigned char ae, unsigned char ctx_mask,
+		    unsigned short reg_num, unsigned int regdata);
+int qat_hal_wr_lm(struct icp_qat_fw_loader_handle *handle,
+		  unsigned char ae, unsigned short lm_addr, unsigned int value);
+int qat_uclo_wr_all_uimage(struct icp_qat_fw_loader_handle *handle);
+int qat_uclo_del_uof_obj(struct icp_qat_fw_loader_handle *handle);
+int qat_uclo_map_uof_obj(struct icp_qat_fw_loader_handle *handle,
+			 void *addr_ptr, int mem_size);
+#endif

drivers/crypto/qat/qat_common/adf_ctl_drv.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/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/bitops.h>
+#include <linux/pci.h>
+#include <linux/cdev.h>
+#include <linux/uaccess.h>
+
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_cfg.h"
+#include "adf_cfg_common.h"
+#include "adf_cfg_user.h"
+
+#define DEVICE_NAME "qat_adf_ctl"
+
+static DEFINE_MUTEX(adf_ctl_lock);
+static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
+
+static const struct file_operations adf_ctl_ops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = adf_ctl_ioctl,
+	.compat_ioctl = adf_ctl_ioctl,
+};
+
+struct adf_ctl_drv_info {
+	unsigned int major;
+	struct cdev drv_cdev;
+	struct class *drv_class;
+};
+
+static struct adf_ctl_drv_info adt_ctl_drv;
+
+static void adf_chr_drv_destroy(void)
+{
+	device_destroy(adt_ctl_drv.drv_class, MKDEV(adt_ctl_drv.major, 0));
+	cdev_del(&adt_ctl_drv.drv_cdev);
+	class_destroy(adt_ctl_drv.drv_class);
+	unregister_chrdev_region(MKDEV(adt_ctl_drv.major, 0), 1);
+}
+
+static int adf_chr_drv_create(void)
+{
+	dev_t dev_id;
+	struct device *drv_device;
+
+	if (alloc_chrdev_region(&dev_id, 0, 1, DEVICE_NAME)) {
+		pr_err("QAT: unable to allocate chrdev region\n");
+		return -EFAULT;
+	}
+
+	adt_ctl_drv.drv_class = class_create(THIS_MODULE, DEVICE_NAME);
+	if (IS_ERR(adt_ctl_drv.drv_class)) {
+		pr_err("QAT: class_create failed for adf_ctl\n");
+		goto err_chrdev_unreg;
+	}
+	adt_ctl_drv.major = MAJOR(dev_id);
+	cdev_init(&adt_ctl_drv.drv_cdev, &adf_ctl_ops);
+	if (cdev_add(&adt_ctl_drv.drv_cdev, dev_id, 1)) {
+		pr_err("QAT: cdev add failed\n");
+		goto err_class_destr;
+	}
+
+	drv_device = device_create(adt_ctl_drv.drv_class, NULL,
+				   MKDEV(adt_ctl_drv.major, 0),
+				   NULL, DEVICE_NAME);
+	if (!drv_device) {
+		pr_err("QAT: failed to create device\n");
+		goto err_cdev_del;
+	}
+	return 0;
+err_cdev_del:
+	cdev_del(&adt_ctl_drv.drv_cdev);
+err_class_destr:
+	class_destroy(adt_ctl_drv.drv_class);
+err_chrdev_unreg:
+	unregister_chrdev_region(dev_id, 1);
+	return -EFAULT;
+}
+
+static int adf_ctl_alloc_resources(struct adf_user_cfg_ctl_data **ctl_data,
+				   unsigned long arg)
+{
+	struct adf_user_cfg_ctl_data *cfg_data;
+
+	cfg_data = kzalloc(sizeof(*cfg_data), GFP_KERNEL);
+	if (!cfg_data)
+		return -ENOMEM;
+
+	/* Initialize device id to NO DEVICE as 0 is a valid device id */
+	cfg_data->device_id = ADF_CFG_NO_DEVICE;
+
+	if (copy_from_user(cfg_data, (void __user *)arg, sizeof(*cfg_data))) {
+		pr_err("QAT: failed to copy from user cfg_data.\n");
+		kfree(cfg_data);
+		return -EIO;
+	}
+
+	*ctl_data = cfg_data;
+	return 0;
+}
+
+static int adf_add_key_value_data(struct adf_accel_dev *accel_dev,
+				  const char *section,
+				  const struct adf_user_cfg_key_val *key_val)
+{
+	if (key_val->type == ADF_HEX) {
+		long *ptr = (long *)key_val->val;
+		long val = *ptr;
+
+		if (adf_cfg_add_key_value_param(accel_dev, section,
+						key_val->key, (void *)val,
+						key_val->type)) {
+			pr_err("QAT: failed to add keyvalue.\n");
+			return -EFAULT;
+		}
+	} else {
+		if (adf_cfg_add_key_value_param(accel_dev, section,
+						key_val->key, key_val->val,
+						key_val->type)) {
+			pr_err("QAT: failed to add keyvalue.\n");
+			return -EFAULT;
+		}
+	}
+	return 0;
+}
+
+static int adf_copy_key_value_data(struct adf_accel_dev *accel_dev,
+				   struct adf_user_cfg_ctl_data *ctl_data)
+{
+	struct adf_user_cfg_key_val key_val;
+	struct adf_user_cfg_key_val *params_head;
+	struct adf_user_cfg_section section, *section_head;
+
+	section_head = ctl_data->config_section;
+
+	while (section_head) {
+		if (copy_from_user(&section, (void __user *)section_head,
+				   sizeof(*section_head))) {
+			pr_err("QAT: failed to copy section info\n");
+			goto out_err;
+		}
+
+		if (adf_cfg_section_add(accel_dev, section.name)) {
+			pr_err("QAT: failed to add section.\n");
+			goto out_err;
+		}
+
+		params_head = section_head->params;
+
+		while (params_head) {
+			if (copy_from_user(&key_val, (void __user *)params_head,
+					   sizeof(key_val))) {
+				pr_err("QAT: Failed to copy keyvalue.\n");
+				goto out_err;
+			}
+			if (adf_add_key_value_data(accel_dev, section.name,
+						   &key_val)) {
+				goto out_err;
+			}
+			params_head = key_val.next;
+		}
+		section_head = section.next;
+	}
+	return 0;
+out_err:
+	adf_cfg_del_all(accel_dev);
+	return -EFAULT;
+}
+
+static int adf_ctl_ioctl_dev_config(struct file *fp, unsigned int cmd,
+				    unsigned long arg)
+{
+	int ret;
+	struct adf_user_cfg_ctl_data *ctl_data;
+	struct adf_accel_dev *accel_dev;
+
+	ret = adf_ctl_alloc_resources(&ctl_data, arg);
+	if (ret)
+		return ret;
+
+	accel_dev = adf_devmgr_get_dev_by_id(ctl_data->device_id);
+	if (!accel_dev) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	if (adf_dev_started(accel_dev)) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	if (adf_copy_key_value_data(accel_dev, ctl_data)) {
+		ret = -EFAULT;
+		goto out;
+	}
+	set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
+out:
+	kfree(ctl_data);
+	return ret;
+}
+
+static int adf_ctl_is_device_in_use(int id)
+{
+	struct list_head *itr, *head = adf_devmgr_get_head();
+
+	list_for_each(itr, head) {
+		struct adf_accel_dev *dev =
+				list_entry(itr, struct adf_accel_dev, list);
+
+		if (id == dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
+			if (adf_devmgr_in_reset(dev) || adf_dev_in_use(dev)) {
+				pr_info("QAT: device qat_dev%d is busy\n",
+					dev->accel_id);
+				return -EBUSY;
+			}
+		}
+	}
+	return 0;
+}
+
+static int adf_ctl_stop_devices(uint32_t id)
+{
+	struct list_head *itr, *head = adf_devmgr_get_head();
+	int ret = 0;
+
+	list_for_each(itr, head) {
+		struct adf_accel_dev *accel_dev =
+				list_entry(itr, struct adf_accel_dev, list);
+		if (id == accel_dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
+			if (!adf_dev_started(accel_dev))
+				continue;
+
+			if (adf_dev_stop(accel_dev)) {
+				pr_err("QAT: Failed to stop qat_dev%d\n", id);
+				ret = -EFAULT;
+			}
+		}
+	}
+	return ret;
+}
+
+static int adf_ctl_ioctl_dev_stop(struct file *fp, unsigned int cmd,
+				  unsigned long arg)
+{
+	int ret;
+	struct adf_user_cfg_ctl_data *ctl_data;
+
+	ret = adf_ctl_alloc_resources(&ctl_data, arg);
+	if (ret)
+		return ret;
+
+	if (adf_devmgr_verify_id(ctl_data->device_id)) {
+		pr_err("QAT: Device %d not found\n", ctl_data->device_id);
+		ret = -ENODEV;
+		goto out;
+	}
+
+	ret = adf_ctl_is_device_in_use(ctl_data->device_id);
+	if (ret)
+		goto out;
+
+	if (ctl_data->device_id == ADF_CFG_ALL_DEVICES)
+		pr_info("QAT: Stopping all acceleration devices.\n");
+	else
+		pr_info("QAT: Stopping acceleration device qat_dev%d.\n",
+			ctl_data->device_id);
+
+	ret = adf_ctl_stop_devices(ctl_data->device_id);
+	if (ret)
+		pr_err("QAT: failed to stop device.\n");
+out:
+	kfree(ctl_data);
+	return ret;
+}
+
+static int adf_ctl_ioctl_dev_start(struct file *fp, unsigned int cmd,
+				   unsigned long arg)
+{
+	int ret;
+	struct adf_user_cfg_ctl_data *ctl_data;
+	struct adf_accel_dev *accel_dev;
+
+	ret = adf_ctl_alloc_resources(&ctl_data, arg);
+	if (ret)
+		return ret;
+
+	accel_dev = adf_devmgr_get_dev_by_id(ctl_data->device_id);
+	if (!accel_dev) {
+		pr_err("QAT: Device %d not found\n", ctl_data->device_id);
+		ret = -ENODEV;
+		goto out;
+	}
+
+	if (!adf_dev_started(accel_dev)) {
+		pr_info("QAT: Starting acceleration device qat_dev%d.\n",
+			ctl_data->device_id);
+		ret = adf_dev_start(accel_dev);
+	} else {
+		pr_info("QAT: Acceleration device qat_dev%d already started.\n",
+			ctl_data->device_id);
+	}
+	if (ret) {
+		pr_err("QAT: Failed to start qat_dev%d\n", ctl_data->device_id);
+		adf_dev_stop(accel_dev);
+	}
+out:
+	kfree(ctl_data);
+	return ret;
+}
+
+static int adf_ctl_ioctl_get_num_devices(struct file *fp, unsigned int cmd,
+					 unsigned long arg)
+{
+	uint32_t num_devices = 0;
+
+	adf_devmgr_get_num_dev(&num_devices);
+	if (copy_to_user((void __user *)arg, &num_devices, sizeof(num_devices)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int adf_ctl_ioctl_get_status(struct file *fp, unsigned int cmd,
+				    unsigned long arg)
+{
+	struct adf_hw_device_data *hw_data;
+	struct adf_dev_status_info dev_info;
+	struct adf_accel_dev *accel_dev;
+
+	if (copy_from_user(&dev_info, (void __user *)arg,
+			   sizeof(struct adf_dev_status_info))) {
+		pr_err("QAT: failed to copy from user.\n");
+		return -EFAULT;
+	}
+
+	accel_dev = adf_devmgr_get_dev_by_id(dev_info.accel_id);
+	if (!accel_dev) {
+		pr_err("QAT: Device %d not found\n", dev_info.accel_id);
+		return -ENODEV;
+	}
+	hw_data = accel_dev->hw_device;
+	dev_info.state = adf_dev_started(accel_dev) ? DEV_UP : DEV_DOWN;
+	dev_info.num_ae = hw_data->get_num_aes(hw_data);
+	dev_info.num_accel = hw_data->get_num_accels(hw_data);
+	dev_info.num_logical_accel = hw_data->num_logical_accel;
+	dev_info.banks_per_accel = hw_data->num_banks
+					/ hw_data->num_logical_accel;
+	strlcpy(dev_info.name, hw_data->dev_class->name, sizeof(dev_info.name));
+	dev_info.instance_id = hw_data->instance_id;
+	dev_info.type = hw_data->dev_class->type;
+	dev_info.bus = accel_to_pci_dev(accel_dev)->bus->number;
+	dev_info.dev = PCI_SLOT(accel_to_pci_dev(accel_dev)->devfn);
+	dev_info.fun = PCI_FUNC(accel_to_pci_dev(accel_dev)->devfn);
+
+	if (copy_to_user((void __user *)arg, &dev_info,
+			 sizeof(struct adf_dev_status_info))) {
+		pr_err("QAT: failed to copy status.\n");
+		return -EFAULT;
+	}
+	return 0;
+}
+
+static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
+{
+	int ret;
+
+	if (mutex_lock_interruptible(&adf_ctl_lock))
+		return -EFAULT;
+
+	switch (cmd) {
+	case IOCTL_CONFIG_SYS_RESOURCE_PARAMETERS:
+		ret = adf_ctl_ioctl_dev_config(fp, cmd, arg);
+		break;
+
+	case IOCTL_STOP_ACCEL_DEV:
+		ret = adf_ctl_ioctl_dev_stop(fp, cmd, arg);
+		break;
+
+	case IOCTL_START_ACCEL_DEV:
+		ret = adf_ctl_ioctl_dev_start(fp, cmd, arg);
+		break;
+
+	case IOCTL_GET_NUM_DEVICES:
+		ret = adf_ctl_ioctl_get_num_devices(fp, cmd, arg);
+		break;
+
+	case IOCTL_STATUS_ACCEL_DEV:
+		ret = adf_ctl_ioctl_get_status(fp, cmd, arg);
+		break;
+	default:
+		pr_err("QAT: Invalid ioclt\n");
+		ret = -EFAULT;
+		break;
+	}
+	mutex_unlock(&adf_ctl_lock);
+	return ret;
+}
+
+static int __init adf_register_ctl_device_driver(void)
+{
+	mutex_init(&adf_ctl_lock);
+
+	if (qat_algs_init())
+		goto err_algs_init;
+
+	if (adf_chr_drv_create())
+		goto err_chr_dev;
+
+	if (adf_init_aer())
+		goto err_aer;
+
+	if (qat_crypto_register())
+		goto err_crypto_register;
+
+	return 0;
+
+err_crypto_register:
+	adf_exit_aer();
+err_aer:
+	adf_chr_drv_destroy();
+err_chr_dev:
+	qat_algs_exit();
+err_algs_init:
+	mutex_destroy(&adf_ctl_lock);
+	return -EFAULT;
+}
+
+static void __exit adf_unregister_ctl_device_driver(void)
+{
+	adf_chr_drv_destroy();
+	adf_exit_aer();
+	qat_crypto_unregister();
+	qat_algs_exit();
+	mutex_destroy(&adf_ctl_lock);
+}
+
+module_init(adf_register_ctl_device_driver);
+module_exit(adf_unregister_ctl_device_driver);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Intel");
+MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
+MODULE_ALIAS("intel_qat");

drivers/crypto/qat/qat_common/adf_dev_mgr.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 "adf_cfg.h"
+#include "adf_common_drv.h"
+
+static LIST_HEAD(accel_table);
+static DEFINE_MUTEX(table_lock);
+static uint32_t num_devices;
+
+/**
+ * adf_devmgr_add_dev() - Add accel_dev to the acceleration framework
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function adds acceleration device to the acceleration framework.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: 0 on success, error code othewise.
+ */
+int adf_devmgr_add_dev(struct adf_accel_dev *accel_dev)
+{
+	struct list_head *itr;
+
+	if (num_devices == ADF_MAX_DEVICES) {
+		pr_err("QAT: Only support up to %d devices\n", ADF_MAX_DEVICES);
+		return -EFAULT;
+	}
+
+	mutex_lock(&table_lock);
+	list_for_each(itr, &accel_table) {
+		struct adf_accel_dev *ptr =
+				list_entry(itr, struct adf_accel_dev, list);
+
+		if (ptr == accel_dev) {
+			mutex_unlock(&table_lock);
+			return -EEXIST;
+		}
+	}
+	atomic_set(&accel_dev->ref_count, 0);
+	list_add_tail(&accel_dev->list, &accel_table);
+	accel_dev->accel_id = num_devices++;
+	mutex_unlock(&table_lock);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_devmgr_add_dev);
+
+struct list_head *adf_devmgr_get_head(void)
+{
+	return &accel_table;
+}
+
+/**
+ * adf_devmgr_rm_dev() - Remove accel_dev from the acceleration framework.
+ * @accel_dev:  Pointer to acceleration device.
+ *
+ * Function removes acceleration device from the acceleration framework.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: void
+ */
+void adf_devmgr_rm_dev(struct adf_accel_dev *accel_dev)
+{
+	mutex_lock(&table_lock);
+	list_del(&accel_dev->list);
+	num_devices--;
+	mutex_unlock(&table_lock);
+}
+EXPORT_SYMBOL_GPL(adf_devmgr_rm_dev);
+
+struct adf_accel_dev *adf_devmgr_get_first(void)
+{
+	struct adf_accel_dev *dev = NULL;
+
+	if (!list_empty(&accel_table))
+		dev = list_first_entry(&accel_table, struct adf_accel_dev,
+				       list);
+	return dev;
+}
+
+/**
+ * adf_devmgr_pci_to_accel_dev() - Get accel_dev associated with the pci_dev.
+ * @accel_dev:  Pointer to pci device.
+ *
+ * Function returns acceleration device associated with the given pci device.
+ * To be used by QAT device specific drivers.
+ *
+ * Return: pinter to accel_dev or NULL if not found.
+ */
+struct adf_accel_dev *adf_devmgr_pci_to_accel_dev(struct pci_dev *pci_dev)
+{
+	struct list_head *itr;
+
+	list_for_each(itr, &accel_table) {
+		struct adf_accel_dev *ptr =
+				list_entry(itr, struct adf_accel_dev, list);
+
+		if (ptr->accel_pci_dev.pci_dev == pci_dev) {
+			mutex_unlock(&table_lock);
+			return ptr;
+		}
+	}
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(adf_devmgr_pci_to_accel_dev);
+
+struct adf_accel_dev *adf_devmgr_get_dev_by_id(uint32_t id)
+{
+	struct list_head *itr;
+
+	list_for_each(itr, &accel_table) {
+		struct adf_accel_dev *ptr =
+				list_entry(itr, struct adf_accel_dev, list);
+
+		if (ptr->accel_id == id) {
+			mutex_unlock(&table_lock);
+			return ptr;
+		}
+	}
+	return NULL;
+}
+
+int adf_devmgr_verify_id(uint32_t id)
+{
+	if (id == ADF_CFG_ALL_DEVICES)
+		return 0;
+
+	if (adf_devmgr_get_dev_by_id(id))
+		return 0;
+
+	return -ENODEV;
+}
+
+void adf_devmgr_get_num_dev(uint32_t *num)
+{
+	struct list_head *itr;
+
+	*num = 0;
+	list_for_each(itr, &accel_table) {
+		(*num)++;
+	}
+}
+
+int adf_dev_in_use(struct adf_accel_dev *accel_dev)
+{
+	return atomic_read(&accel_dev->ref_count) != 0;
+}
+
+int adf_dev_get(struct adf_accel_dev *accel_dev)
+{
+	if (atomic_add_return(1, &accel_dev->ref_count) == 1)
+		if (!try_module_get(accel_dev->owner))
+			return -EFAULT;
+	return 0;
+}
+
+void adf_dev_put(struct adf_accel_dev *accel_dev)
+{
+	if (atomic_sub_return(1, &accel_dev->ref_count) == 0)
+		module_put(accel_dev->owner);
+}
+
+int adf_devmgr_in_reset(struct adf_accel_dev *accel_dev)
+{
+	return test_bit(ADF_STATUS_RESTARTING, &accel_dev->status);
+}
+
+int adf_dev_started(struct adf_accel_dev *accel_dev)
+{
+	return test_bit(ADF_STATUS_STARTED, &accel_dev->status);
+}

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 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_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;
+	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
+
+	if (!test_bit(ADF_STATUS_CONFIGURED, &accel_dev->status)) {
+		pr_info("QAT: Device not configured\n");
+		return -EFAULT;
+	}
+	set_bit(ADF_STATUS_STARTING, &accel_dev->status);
+
+	if (adf_ae_init(accel_dev)) {
+		pr_err("QAT: Failed to initialise Acceleration Engine\n");
+		return -EFAULT;
+	}
+	set_bit(ADF_STATUS_AE_INITIALISED, &accel_dev->status);
+
+	if (adf_ae_fw_load(accel_dev)) {
+		pr_err("Failed to load acceleration FW\n");
+		adf_ae_fw_release(accel_dev);
+		return -EFAULT;
+	}
+	set_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status);
+
+	if (hw_data->alloc_irq(accel_dev)) {
+		pr_err("QAT: 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)) {
+			pr_err("QAT: 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)) {
+			pr_err("QAT: 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);
+
+	if (adf_ae_start(accel_dev)) {
+		pr_err("QAT: 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)) {
+			pr_err("QAT: 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)) {
+			pr_err("QAT: 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()) {
+		pr_err("QAT: 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 adf_hw_device_data *hw_data = accel_dev->hw_device;
+	struct service_hndl *service;
+	struct list_head *list_itr;
+	int ret, wait = 0;
+
+	if (!adf_dev_started(accel_dev) &&
+	    !test_bit(ADF_STATUS_STARTING, &accel_dev->status)) {
+		return 0;
+	}
+	clear_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
+	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
+	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
+
+	if (qat_algs_unregister())
+		pr_err("QAT: 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 = 1;
+			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))
+			pr_err("QAT: Failed to shutdown service %s\n",
+			       service->name);
+		else
+			clear_bit(accel_dev->accel_id, &service->start_status);
+	}
+
+	if (wait)
+		msleep(100);
+
+	if (adf_dev_started(accel_dev)) {
+		if (adf_ae_stop(accel_dev))
+			pr_err("QAT: failed to stop AE\n");
+		else
+			clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
+	}
+
+	if (test_bit(ADF_STATUS_AE_UCODE_LOADED, &accel_dev->status)) {
+		if (adf_ae_fw_release(accel_dev))
+			pr_err("QAT: Failed to release the ucode\n");
+		else
+			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))
+			pr_err("QAT: 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))
+			pr_err("QAT: 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))
+			pr_err("QAT: 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);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_dev_stop);
+
+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))
+			pr_err("QAT: 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))
+			pr_err("QAT: 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))
+			pr_err("QAT: 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))
+			pr_err("QAT: Failed to restart service %s.\n",
+			       service->name);
+	}
+	return 0;
+}