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.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_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);
+}