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- /*
- 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_c3xxxvf_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_C3XXXIOV_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_C3XXXVF_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_C3XXXIOV_PCI_DEVICE_ID:
- adf_clean_hw_data_c3xxxiov(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_C3XXXIOV_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_c3xxxiov(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.%d",
- 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_C3XXXVF_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;
- ret = adf_dev_init(accel_dev);
- if (ret)
- goto out_err_dev_shutdown;
- set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
- 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);
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