drivers/crypto/qat/qat_common/adf_admin.c - kernel/quantenna - Git at Google

 /*
   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/types.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
 #include "adf_accel_devices.h"
 #include "adf_common_drv.h"
 #include "icp_qat_fw_init_admin.h"

 /* Admin Messages Registers */
 #define ADF_DH895XCC_ADMINMSGUR_OFFSET (0x3A000 + 0x574)
 #define ADF_DH895XCC_ADMINMSGLR_OFFSET (0x3A000 + 0x578)
 #define ADF_DH895XCC_MAILBOX_BASE_OFFSET 0x20970
 #define ADF_DH895XCC_MAILBOX_STRIDE 0x1000
 #define ADF_ADMINMSG_LEN 32

 static const u8 const_tab[1024] __aligned(1024) = {
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x03, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x01,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x13, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x02, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x13, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13,
 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76,
 0x54, 0x32, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x67, 0x45, 0x23, 0x01, 0xef, 0xcd, 0xab,
 0x89, 0x98, 0xba, 0xdc, 0xfe, 0x10, 0x32, 0x54, 0x76, 0xc3, 0xd2, 0xe1, 0xf0,
 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc1, 0x05, 0x9e,
 0xd8, 0x36, 0x7c, 0xd5, 0x07, 0x30, 0x70, 0xdd, 0x17, 0xf7, 0x0e, 0x59, 0x39,
 0xff, 0xc0, 0x0b, 0x31, 0x68, 0x58, 0x15, 0x11, 0x64, 0xf9, 0x8f, 0xa7, 0xbe,
 0xfa, 0x4f, 0xa4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6a, 0x09, 0xe6, 0x67, 0xbb, 0x67, 0xae,
 0x85, 0x3c, 0x6e, 0xf3, 0x72, 0xa5, 0x4f, 0xf5, 0x3a, 0x51, 0x0e, 0x52, 0x7f,
 0x9b, 0x05, 0x68, 0x8c, 0x1f, 0x83, 0xd9, 0xab, 0x5b, 0xe0, 0xcd, 0x19, 0x05,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0xcb, 0xbb, 0x9d, 0x5d, 0xc1, 0x05, 0x9e, 0xd8, 0x62, 0x9a, 0x29,
 0x2a, 0x36, 0x7c, 0xd5, 0x07, 0x91, 0x59, 0x01, 0x5a, 0x30, 0x70, 0xdd, 0x17,
 0x15, 0x2f, 0xec, 0xd8, 0xf7, 0x0e, 0x59, 0x39, 0x67, 0x33, 0x26, 0x67, 0xff,
 0xc0, 0x0b, 0x31, 0x8e, 0xb4, 0x4a, 0x87, 0x68, 0x58, 0x15, 0x11, 0xdb, 0x0c,
 0x2e, 0x0d, 0x64, 0xf9, 0x8f, 0xa7, 0x47, 0xb5, 0x48, 0x1d, 0xbe, 0xfa, 0x4f,
 0xa4, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x6a, 0x09, 0xe6, 0x67, 0xf3, 0xbc, 0xc9, 0x08, 0xbb,
 0x67, 0xae, 0x85, 0x84, 0xca, 0xa7, 0x3b, 0x3c, 0x6e, 0xf3, 0x72, 0xfe, 0x94,
 0xf8, 0x2b, 0xa5, 0x4f, 0xf5, 0x3a, 0x5f, 0x1d, 0x36, 0xf1, 0x51, 0x0e, 0x52,
 0x7f, 0xad, 0xe6, 0x82, 0xd1, 0x9b, 0x05, 0x68, 0x8c, 0x2b, 0x3e, 0x6c, 0x1f,
 0x1f, 0x83, 0xd9, 0xab, 0xfb, 0x41, 0xbd, 0x6b, 0x5b, 0xe0, 0xcd, 0x19, 0x13,
 0x7e, 0x21, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

 struct adf_admin_comms {
 	dma_addr_t phy_addr;
 	dma_addr_t const_tbl_addr;
 	void *virt_addr;
 	void __iomem *mailbox_addr;
 	struct mutex lock;	/* protects adf_admin_comms struct */
 };

 static int adf_put_admin_msg_sync(struct adf_accel_dev *accel_dev, u32 ae,
 				  void *in, void *out)
 {
 	struct adf_admin_comms *admin = accel_dev->admin;
 	int offset = ae * ADF_ADMINMSG_LEN * 2;
 	void __iomem *mailbox = admin->mailbox_addr;
 	int mb_offset = ae * ADF_DH895XCC_MAILBOX_STRIDE;
 	int times, received;

 	mutex_lock(&admin->lock);

 	if (ADF_CSR_RD(mailbox, mb_offset) == 1) {
 		mutex_unlock(&admin->lock);
 		return -EAGAIN;
 	}

 	memcpy(admin->virt_addr + offset, in, ADF_ADMINMSG_LEN);
 	ADF_CSR_WR(mailbox, mb_offset, 1);
 	received = 0;
 	for (times = 0; times < 50; times++) {
 		msleep(20);
 		if (ADF_CSR_RD(mailbox, mb_offset) == 0) {
 			received = 1;
 			break;
 		}
 	}
 	if (received)
 		memcpy(out, admin->virt_addr + offset +
 		       ADF_ADMINMSG_LEN, ADF_ADMINMSG_LEN);
 	else
 		dev_err(&GET_DEV(accel_dev),
 			"Failed to send admin msg to accelerator\n");

 	mutex_unlock(&admin->lock);
 	return received ? 0 : -EFAULT;
 }

 static int adf_send_admin_cmd(struct adf_accel_dev *accel_dev, int cmd)
 {
 	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
 	struct icp_qat_fw_init_admin_req req;
 	struct icp_qat_fw_init_admin_resp resp;
 	int i;

 	memset(&req, 0, sizeof(struct icp_qat_fw_init_admin_req));
 	req.init_admin_cmd_id = cmd;

 	if (cmd == ICP_QAT_FW_CONSTANTS_CFG) {
 		req.init_cfg_sz = 1024;
 		req.init_cfg_ptr = accel_dev->admin->const_tbl_addr;
 	}
 	for (i = 0; i < hw_device->get_num_aes(hw_device); i++) {
 		memset(&resp, 0, sizeof(struct icp_qat_fw_init_admin_resp));
 		if (adf_put_admin_msg_sync(accel_dev, i, &req, &resp) ||
 		    resp.init_resp_hdr.status)
 			return -EFAULT;
 	}
 	return 0;
 }

 /**
  * adf_send_admin_init() - Function sends init message to FW
  * @accel_dev: Pointer to acceleration device.
  *
  * Function sends admin init message to the FW
  *
  * Return: 0 on success, error code otherwise.
  */
 int adf_send_admin_init(struct adf_accel_dev *accel_dev)
 {
 	int ret = adf_send_admin_cmd(accel_dev, ICP_QAT_FW_INIT_ME);

 	if (ret)
 		return ret;
 	return adf_send_admin_cmd(accel_dev, ICP_QAT_FW_CONSTANTS_CFG);
 }
 EXPORT_SYMBOL_GPL(adf_send_admin_init);

 int adf_init_admin_comms(struct adf_accel_dev *accel_dev)
 {
 	struct adf_admin_comms *admin;
 	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
 	struct adf_bar *pmisc =
 		&GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
 	void __iomem *csr = pmisc->virt_addr;
 	void __iomem *mailbox = (void __iomem *)((uintptr_t)csr +
 				 ADF_DH895XCC_MAILBOX_BASE_OFFSET);
 	u64 reg_val;

 	admin = kzalloc_node(sizeof(*accel_dev->admin), GFP_KERNEL,
 			     dev_to_node(&GET_DEV(accel_dev)));
 	if (!admin)
 		return -ENOMEM;
 	admin->virt_addr = dma_zalloc_coherent(&GET_DEV(accel_dev), PAGE_SIZE,
 					       &admin->phy_addr, GFP_KERNEL);
 	if (!admin->virt_addr) {
 		dev_err(&GET_DEV(accel_dev), "Failed to allocate dma buff\n");
 		kfree(admin);
 		return -ENOMEM;
 	}

 	admin->const_tbl_addr = dma_map_single(&GET_DEV(accel_dev),
 					       (void *) const_tab, 1024,
 					       DMA_TO_DEVICE);

 	if (unlikely(dma_mapping_error(&GET_DEV(accel_dev),
 				       admin->const_tbl_addr))) {
 		dma_free_coherent(&GET_DEV(accel_dev), PAGE_SIZE,
 				  admin->virt_addr, admin->phy_addr);
 		kfree(admin);
 		return -ENOMEM;
 	}
 	reg_val = (u64)admin->phy_addr;
 	ADF_CSR_WR(csr, ADF_DH895XCC_ADMINMSGUR_OFFSET, reg_val >> 32);
 	ADF_CSR_WR(csr, ADF_DH895XCC_ADMINMSGLR_OFFSET, reg_val);
 	mutex_init(&admin->lock);
 	admin->mailbox_addr = mailbox;
 	accel_dev->admin = admin;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(adf_init_admin_comms);

 void adf_exit_admin_comms(struct adf_accel_dev *accel_dev)
 {
 	struct adf_admin_comms *admin = accel_dev->admin;

 	if (!admin)
 		return;

 	if (admin->virt_addr)
 		dma_free_coherent(&GET_DEV(accel_dev), PAGE_SIZE,
 				  admin->virt_addr, admin->phy_addr);

 	dma_unmap_single(&GET_DEV(accel_dev), admin->const_tbl_addr, 1024,
 			 DMA_TO_DEVICE);
 	mutex_destroy(&admin->lock);
 	kfree(admin);
 	accel_dev->admin = NULL;
 }
 EXPORT_SYMBOL_GPL(adf_exit_admin_comms);
	/*
	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/types.h>
	#include <linux/mutex.h>
	#include <linux/slab.h>
	#include <linux/delay.h>
	#include <linux/pci.h>
	#include <linux/dma-mapping.h>
	#include "adf_accel_devices.h"
	#include "adf_common_drv.h"
	#include "icp_qat_fw_init_admin.h"

	/* Admin Messages Registers */
	#define ADF_DH895XCC_ADMINMSGUR_OFFSET (0x3A000 + 0x574)
	#define ADF_DH895XCC_ADMINMSGLR_OFFSET (0x3A000 + 0x578)
	#define ADF_DH895XCC_MAILBOX_BASE_OFFSET 0x20970
	#define ADF_DH895XCC_MAILBOX_STRIDE 0x1000
	#define ADF_ADMINMSG_LEN 32

	static const u8 const_tab[1024] __aligned(1024) = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

	struct adf_admin_comms {
	dma_addr_t phy_addr;
	dma_addr_t const_tbl_addr;
	void *virt_addr;
	void __iomem *mailbox_addr;
	struct mutex lock; /* protects adf_admin_comms struct */
	};

	static int adf_put_admin_msg_sync(struct adf_accel_dev *accel_dev, u32 ae,
	void in, void out)
	{
	struct adf_admin_comms *admin = accel_dev->admin;
	int offset = ae * ADF_ADMINMSG_LEN * 2;
	void __iomem *mailbox = admin->mailbox_addr;
	int mb_offset = ae * ADF_DH895XCC_MAILBOX_STRIDE;
	int times, received;

	mutex_lock(&admin->lock);

	if (ADF_CSR_RD(mailbox, mb_offset) == 1) {
	mutex_unlock(&admin->lock);
	return -EAGAIN;
	}

	memcpy(admin->virt_addr + offset, in, ADF_ADMINMSG_LEN);
	ADF_CSR_WR(mailbox, mb_offset, 1);
	received = 0;
	for (times = 0; times < 50; times++) {
	msleep(20);
	if (ADF_CSR_RD(mailbox, mb_offset) == 0) {
	received = 1;
	break;
	}
	}
	if (received)
	memcpy(out, admin->virt_addr + offset +
	ADF_ADMINMSG_LEN, ADF_ADMINMSG_LEN);
	else
	dev_err(&GET_DEV(accel_dev),
	"Failed to send admin msg to accelerator\n");

	mutex_unlock(&admin->lock);
	return received ? 0 : -EFAULT;
	}

	static int adf_send_admin_cmd(struct adf_accel_dev *accel_dev, int cmd)
	{
	struct adf_hw_device_data *hw_device = accel_dev->hw_device;
	struct icp_qat_fw_init_admin_req req;
	struct icp_qat_fw_init_admin_resp resp;
	int i;

	memset(&req, 0, sizeof(struct icp_qat_fw_init_admin_req));
	req.init_admin_cmd_id = cmd;

	if (cmd == ICP_QAT_FW_CONSTANTS_CFG) {
	req.init_cfg_sz = 1024;
	req.init_cfg_ptr = accel_dev->admin->const_tbl_addr;
	}
	for (i = 0; i < hw_device->get_num_aes(hw_device); i++) {
	memset(&resp, 0, sizeof(struct icp_qat_fw_init_admin_resp));
	if (adf_put_admin_msg_sync(accel_dev, i, &req, &resp) \|\|
	resp.init_resp_hdr.status)
	return -EFAULT;
	}
	return 0;
	}

	/**
	* adf_send_admin_init() - Function sends init message to FW
	* @accel_dev: Pointer to acceleration device.
	*
	* Function sends admin init message to the FW
	*
	* Return: 0 on success, error code otherwise.
	*/
	int adf_send_admin_init(struct adf_accel_dev *accel_dev)
	{
	int ret = adf_send_admin_cmd(accel_dev, ICP_QAT_FW_INIT_ME);

	if (ret)
	return ret;
	return adf_send_admin_cmd(accel_dev, ICP_QAT_FW_CONSTANTS_CFG);
	}
	EXPORT_SYMBOL_GPL(adf_send_admin_init);

	int adf_init_admin_comms(struct adf_accel_dev *accel_dev)
	{
	struct adf_admin_comms *admin;
	struct adf_hw_device_data *hw_data = accel_dev->hw_device;
	struct adf_bar *pmisc =
	&GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)];
	void __iomem *csr = pmisc->virt_addr;
	void __iomem mailbox = (void __iomem )((uintptr_t)csr +
	ADF_DH895XCC_MAILBOX_BASE_OFFSET);
	u64 reg_val;

	admin = kzalloc_node(sizeof(*accel_dev->admin), GFP_KERNEL,
	dev_to_node(&GET_DEV(accel_dev)));
	if (!admin)
	return -ENOMEM;
	admin->virt_addr = dma_zalloc_coherent(&GET_DEV(accel_dev), PAGE_SIZE,
	&admin->phy_addr, GFP_KERNEL);
	if (!admin->virt_addr) {
	dev_err(&GET_DEV(accel_dev), "Failed to allocate dma buff\n");
	kfree(admin);
	return -ENOMEM;
	}

	admin->const_tbl_addr = dma_map_single(&GET_DEV(accel_dev),
	(void *) const_tab, 1024,
	DMA_TO_DEVICE);

	if (unlikely(dma_mapping_error(&GET_DEV(accel_dev),
	admin->const_tbl_addr))) {
	dma_free_coherent(&GET_DEV(accel_dev), PAGE_SIZE,
	admin->virt_addr, admin->phy_addr);
	kfree(admin);
	return -ENOMEM;
	}
	reg_val = (u64)admin->phy_addr;
	ADF_CSR_WR(csr, ADF_DH895XCC_ADMINMSGUR_OFFSET, reg_val >> 32);
	ADF_CSR_WR(csr, ADF_DH895XCC_ADMINMSGLR_OFFSET, reg_val);
	mutex_init(&admin->lock);
	admin->mailbox_addr = mailbox;
	accel_dev->admin = admin;
	return 0;
	}
	EXPORT_SYMBOL_GPL(adf_init_admin_comms);

	void adf_exit_admin_comms(struct adf_accel_dev *accel_dev)
	{
	struct adf_admin_comms *admin = accel_dev->admin;

	if (!admin)
	return;

	if (admin->virt_addr)
	dma_free_coherent(&GET_DEV(accel_dev), PAGE_SIZE,
	admin->virt_addr, admin->phy_addr);

	dma_unmap_single(&GET_DEV(accel_dev), admin->const_tbl_addr, 1024,
	DMA_TO_DEVICE);
	mutex_destroy(&admin->lock);
	kfree(admin);
	accel_dev->admin = NULL;
	}
	EXPORT_SYMBOL_GPL(adf_exit_admin_comms);