306 lines
8.7 KiB
C
306 lines
8.7 KiB
C
/*
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This file is provided under a dual BSD/GPLv2 license. When using or
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redistributing this file, you may do so under either license.
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GPL LICENSE SUMMARY
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Copyright(c) 2014 Intel Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of version 2 of the GNU General Public License as
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published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Contact Information:
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qat-linux@intel.com
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BSD LICENSE
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Copyright(c) 2014 Intel Corporation.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/platform_device.h>
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#include <linux/workqueue.h>
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#include <linux/io.h>
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#include <adf_accel_devices.h>
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#include <adf_common_drv.h>
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#include <adf_cfg.h>
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#include "adf_c62xvf_hw_data.h"
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#define ADF_SYSTEM_DEVICE(device_id) \
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{PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
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static const struct pci_device_id adf_pci_tbl[] = {
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ADF_SYSTEM_DEVICE(ADF_C62XIOV_PCI_DEVICE_ID),
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
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static int adf_probe(struct pci_dev *dev, const struct pci_device_id *ent);
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static void adf_remove(struct pci_dev *dev);
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static struct pci_driver adf_driver = {
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.id_table = adf_pci_tbl,
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.name = ADF_C62XVF_DEVICE_NAME,
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.probe = adf_probe,
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.remove = adf_remove,
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};
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static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev)
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{
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pci_release_regions(accel_dev->accel_pci_dev.pci_dev);
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pci_disable_device(accel_dev->accel_pci_dev.pci_dev);
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}
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static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
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{
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struct adf_accel_pci *accel_pci_dev = &accel_dev->accel_pci_dev;
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struct adf_accel_dev *pf;
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int i;
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for (i = 0; i < ADF_PCI_MAX_BARS; i++) {
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struct adf_bar *bar = &accel_pci_dev->pci_bars[i];
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if (bar->virt_addr)
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pci_iounmap(accel_pci_dev->pci_dev, bar->virt_addr);
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}
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if (accel_dev->hw_device) {
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switch (accel_pci_dev->pci_dev->device) {
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case ADF_C62XIOV_PCI_DEVICE_ID:
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adf_clean_hw_data_c62xiov(accel_dev->hw_device);
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break;
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default:
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break;
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}
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kfree(accel_dev->hw_device);
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accel_dev->hw_device = NULL;
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}
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adf_cfg_dev_remove(accel_dev);
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debugfs_remove(accel_dev->debugfs_dir);
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pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
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adf_devmgr_rm_dev(accel_dev, pf);
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}
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static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct adf_accel_dev *accel_dev;
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struct adf_accel_dev *pf;
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struct adf_accel_pci *accel_pci_dev;
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struct adf_hw_device_data *hw_data;
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char name[ADF_DEVICE_NAME_LENGTH];
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unsigned int i, bar_nr;
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unsigned long bar_mask;
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int ret;
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switch (ent->device) {
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case ADF_C62XIOV_PCI_DEVICE_ID:
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break;
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default:
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dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
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return -ENODEV;
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}
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accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
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dev_to_node(&pdev->dev));
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if (!accel_dev)
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return -ENOMEM;
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accel_dev->is_vf = true;
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pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
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accel_pci_dev = &accel_dev->accel_pci_dev;
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accel_pci_dev->pci_dev = pdev;
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/* Add accel device to accel table */
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if (adf_devmgr_add_dev(accel_dev, pf)) {
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dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
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kfree(accel_dev);
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return -EFAULT;
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}
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INIT_LIST_HEAD(&accel_dev->crypto_list);
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accel_dev->owner = THIS_MODULE;
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/* Allocate and configure device configuration structure */
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hw_data = kzalloc_node(sizeof(*hw_data), GFP_KERNEL,
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dev_to_node(&pdev->dev));
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if (!hw_data) {
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ret = -ENOMEM;
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goto out_err;
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}
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accel_dev->hw_device = hw_data;
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adf_init_hw_data_c62xiov(accel_dev->hw_device);
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/* Get Accelerators and Accelerators Engines masks */
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hw_data->accel_mask = hw_data->get_accel_mask(hw_data->fuses);
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hw_data->ae_mask = hw_data->get_ae_mask(hw_data->fuses);
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accel_pci_dev->sku = hw_data->get_sku(hw_data);
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/* Create dev top level debugfs entry */
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snprintf(name, sizeof(name), "%s%s_%02x:%02d.%02d",
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ADF_DEVICE_NAME_PREFIX, hw_data->dev_class->name,
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pdev->bus->number, PCI_SLOT(pdev->devfn),
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PCI_FUNC(pdev->devfn));
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accel_dev->debugfs_dir = debugfs_create_dir(name, NULL);
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if (!accel_dev->debugfs_dir) {
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dev_err(&pdev->dev, "Could not create debugfs dir %s\n", name);
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ret = -EINVAL;
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goto out_err;
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}
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/* Create device configuration table */
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ret = adf_cfg_dev_add(accel_dev);
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if (ret)
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goto out_err;
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/* enable PCI device */
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if (pci_enable_device(pdev)) {
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ret = -EFAULT;
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goto out_err;
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}
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/* set dma identifier */
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if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
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if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
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dev_err(&pdev->dev, "No usable DMA configuration\n");
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ret = -EFAULT;
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goto out_err_disable;
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} else {
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pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
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}
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} else {
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pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
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}
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if (pci_request_regions(pdev, ADF_C62XVF_DEVICE_NAME)) {
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ret = -EFAULT;
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goto out_err_disable;
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}
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/* Find and map all the device's BARS */
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i = 0;
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bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
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for_each_set_bit(bar_nr, &bar_mask, ADF_PCI_MAX_BARS * 2) {
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struct adf_bar *bar = &accel_pci_dev->pci_bars[i++];
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bar->base_addr = pci_resource_start(pdev, bar_nr);
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if (!bar->base_addr)
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break;
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bar->size = pci_resource_len(pdev, bar_nr);
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bar->virt_addr = pci_iomap(accel_pci_dev->pci_dev, bar_nr, 0);
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if (!bar->virt_addr) {
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dev_err(&pdev->dev, "Failed to map BAR %d\n", bar_nr);
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ret = -EFAULT;
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goto out_err_free_reg;
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}
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}
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pci_set_master(pdev);
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/* Completion for VF2PF request/response message exchange */
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init_completion(&accel_dev->vf.iov_msg_completion);
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ret = qat_crypto_dev_config(accel_dev);
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if (ret)
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goto out_err_free_reg;
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set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
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ret = adf_dev_init(accel_dev);
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if (ret)
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goto out_err_dev_shutdown;
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ret = adf_dev_start(accel_dev);
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if (ret)
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goto out_err_dev_stop;
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return ret;
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out_err_dev_stop:
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adf_dev_stop(accel_dev);
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out_err_dev_shutdown:
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adf_dev_shutdown(accel_dev);
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out_err_free_reg:
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pci_release_regions(accel_pci_dev->pci_dev);
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out_err_disable:
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pci_disable_device(accel_pci_dev->pci_dev);
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out_err:
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adf_cleanup_accel(accel_dev);
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kfree(accel_dev);
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return ret;
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}
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static void adf_remove(struct pci_dev *pdev)
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{
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struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev);
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if (!accel_dev) {
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pr_err("QAT: Driver removal failed\n");
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return;
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}
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adf_dev_stop(accel_dev);
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adf_dev_shutdown(accel_dev);
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adf_cleanup_accel(accel_dev);
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adf_cleanup_pci_dev(accel_dev);
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kfree(accel_dev);
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}
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static int __init adfdrv_init(void)
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{
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request_module("intel_qat");
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if (pci_register_driver(&adf_driver)) {
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pr_err("QAT: Driver initialization failed\n");
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return -EFAULT;
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}
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return 0;
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}
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static void __exit adfdrv_release(void)
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{
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pci_unregister_driver(&adf_driver);
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adf_clean_vf_map(true);
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}
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module_init(adfdrv_init);
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module_exit(adfdrv_release);
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Intel");
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MODULE_DESCRIPTION("Intel(R) QuickAssist Technology");
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MODULE_VERSION(ADF_DRV_VERSION);
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