text: /*
    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/module.h>
  #include <linux/pci.h>
  #include <linux/init.h>
  #include <linux/types.h>
  #include <linux/fs.h>
  #include <linux/slab.h>
  #include <linux/errno.h>
  #include <linux/device.h>
  #include <linux/dma-mapping.h>
  #include <linux/platform_device.h>
  #include <linux/workqueue.h>
  #include <linux/io.h>
  #include <adf_accel_devices.h>
  #include <adf_common_drv.h>
  #include <adf_cfg.h>
  #include "adf_c62xvf_hw_data.h"
  
  #define ADF_SYSTEM_DEVICE(device_id) \
  	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
  
  static const struct pci_device_id adf_pci_tbl[] = {
  	ADF_SYSTEM_DEVICE(ADF_C62XIOV_PCI_DEVICE_ID),
  	{0,}
  };
  MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
  
  static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
  static void adf_remove(struct pci_dev *dev);
  
  static struct pci_driver adf_driver = {
  	.id_table = adf_pci_tbl,
  	.name = ADF_C62XVF_DEVICE_NAME,
  	.probe = adf_probe,
  	.remove = adf_remove,
  };
  
  static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
  {
  	pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
  	pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
  }
  
  static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
  {
  	struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
  	struct adf_accel_dev *pf;
  	int i;
  
  	for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
  		struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
  
  		if (bar->virt_addr)
  			pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
  	}
  
  	if (accel_dev->hw_device) {
  		switch (accel_pci_dev->pci_dev->device) {
  		case ADF_C62XIOV_PCI_DEVICE_ID:
  			adf_clean_hw_data_c62xiov(accel_dev->hw_device);
  			break;
  		default:
  			break;
  		}
  		kfree(accel_dev->hw_device);
  		accel_dev->hw_device = NULL;
  	}
  	adf_cfg_dev_remove(accel_dev);
  	debugfs_remove(accel_dev->debugfs_dir);
  	pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
  	adf_devmgr_rm_dev(accel_dev, pf);
  }
  
  static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  {
  	struct adf_accel_dev *accel_dev;
  	struct adf_accel_dev *pf;
  	struct adf_accel_pci *accel_pci_dev;
  	struct adf_hw_device_data *hw_data;
  	char name[ADF_DEVICE_NAME_LENGTH];
  	unsigned int i, bar_nr;
  	unsigned long bar_mask;
  	int ret;
  
  	switch (ent->device) {
  	case ADF_C62XIOV_PCI_DEVICE_ID:
  		break;
  	default:
  		dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
  		return -ENODEV;
  	}
  
  	accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
  				 dev_to_node(&pdev->dev));
  	if (!accel_dev)
  		return -ENOMEM;
  
  	accel_dev->is_vf = true;
  	pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
  	accel_pci_dev = &accel_dev->accel_pci_dev;
  	accel_pci_dev->pci_dev = pdev;
  
  	/* Add accel device to accel table */
  	if (adf_devmgr_add_dev(accel_dev, pf)) {
  		dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
  		kfree(accel_dev);
  		return -EFAULT;
  	}
  	INIT_LIST_HEAD(&accel_dev->crypto_list);
  
  	accel_dev->owner = THIS_MODULE;
  	/* Allocate and configure device configuration structure */
  	hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
  			       dev_to_node(&pdev->dev));
  	if (!hw_data) {
  		ret = -ENOMEM;
  		goto out_err;
  	}
  	accel_dev->hw_device = hw_data;
  	adf_init_hw_data_c62xiov(accel_dev->hw_device);
  
  	/* Get Accelerators and Accelerators Engines masks */
  	hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses);
  	hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses);
  	accel_pci_dev->sku = hw_data->get_sku(hw_data);
  
  	/* Create dev top level debugfs entry */
  	snprintf(name, sizeof(name), "%s%s_%02x:%02d.%02d",
  		 ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name,
  		 pdev->bus->number, PCI_SLOT(pdev->devfn),
  		 PCI_FUNC(pdev->devfn));
  
  	accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
  	if (!accel_dev->debugfs_dir) {
  		dev_err(&pdev->dev, "Could not create debugfs dir %s\n", name);
  		ret = -EINVAL;
  		goto out_err;
  	}
  
  	/* Create device configuration table */
  	ret = adf_cfg_dev_add(accel_dev);
  	if (ret)
  		goto out_err;
  
  	/* enable PCI device */
  	if (pci_enable_device(pdev)) {
  		ret = -EFAULT;
  		goto out_err;
  	}
  
  	/* set dma identifier */
  	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
  		if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
  			dev_err(&pdev->dev, "No usable DMA configuration\n");
  			ret = -EFAULT;
  			goto out_err_disable;
  		} else {
  			pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
  		}
  
  	} else {
  		pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
  	}
  
  	if (pci_request_regions(pdev, ADF_C62XVF_DEVICE_NAME)) {
  		ret = -EFAULT;
  		goto out_err_disable;
  	}
  
  	/* Find and map all the device's BARS */
  	i = 0;
  	bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
  	for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
  		struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
  
  		bar->base_addr = pci_resource_start(pdev, bar_nr);
  		if (!bar->base_addr)
  			break;
  		bar->size = pci_resource_len(pdev, bar_nr);
  		bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
  		if (!bar->virt_addr) {
  			dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
  			ret = -EFAULT;
  			goto out_err_free_reg;
  		}
  	}
  	pci_set_master(pdev);
  	/* Completion for VF2PF request/response message exchange */
  	init_completion(&accel_dev->vf.iov_msg_completion);
  
  	ret = qat_crypto_dev_config(accel_dev);
  	if (ret)
  		goto out_err_free_reg;
  
  	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
  
  	ret = adf_dev_init(accel_dev);
  	if (ret)
  		goto out_err_dev_shutdown;
  
  	ret = adf_dev_start(accel_dev);
  	if (ret)
  		goto out_err_dev_stop;
  
  	return ret;
  
  out_err_dev_stop:
  	adf_dev_stop(accel_dev);
  out_err_dev_shutdown:
  	adf_dev_shutdown(accel_dev);
  out_err_free_reg:
  	pci_release_regions(accel_pci_dev->pci_dev);
  out_err_disable:
  	pci_disable_device(accel_pci_dev->pci_dev);
  out_err:
  	adf_cleanup_accel(accel_dev);
  	kfree(accel_dev);
  	return ret;
  }
  
  static void adf_remove(struct pci_dev *pdev)
  {
  	struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
  
  	if (!accel_dev) {
  		pr_err("QAT: Driver removal failed\n");
  		return;
  	}
  	adf_dev_stop(accel_dev);
  	adf_dev_shutdown(accel_dev);
  	adf_cleanup_accel(accel_dev);
  	adf_cleanup_pci_dev(accel_dev);
  	kfree(accel_dev);
  }
  
  static int __init adfdrv_init(void)
  {
  	request_module("intel_qat");
  
  	if (pci_register_driver(&adf_driver)) {
  		pr_err("QAT: Driver initialization failed\n");
  		return -EFAULT;
  	}
  	return 0;
  }
  
  static void __exit adfdrv_release(void)
  {
  	pci_unregister_driver(&adf_driver);
  	adf_clean_vf_map(true);
  }
  
  module_init(adfdrv_init);
  module_exit(adfdrv_release);
  
  MODULE_LICENSE("Dual BSD/GPL");
  MODULE_AUTHOR("Intel");
  MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
  MODULE_VERSION(ADF_DRV_VERSION);
  