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277 lines
7.2 KiB
277 lines
7.2 KiB
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) |
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/* Copyright(c) 2014 - 2020 Intel Corporation */ |
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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_c62x_hw_data.h" |
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static const struct pci_device_id adf_pci_tbl[] = { |
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{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C62X), }, |
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{ } |
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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_C62X_DEVICE_NAME, |
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.probe = adf_probe, |
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.remove = adf_remove, |
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.sriov_configure = adf_sriov_configure, |
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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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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 PCI_DEVICE_ID_INTEL_QAT_C62X: |
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adf_clean_hw_data_c62x(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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adf_devmgr_rm_dev(accel_dev, NULL); |
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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_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 PCI_DEVICE_ID_INTEL_QAT_C62X: |
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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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if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { |
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/* If the accelerator is connected to a node with no memory |
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* there is no point in using the accelerator since the remote |
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* memory transaction will be very slow. */ |
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dev_err(&pdev->dev, "Invalid NUMA configuration.\n"); |
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return -EINVAL; |
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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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INIT_LIST_HEAD(&accel_dev->crypto_list); |
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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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* This should be called before adf_cleanup_accel is called */ |
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if (adf_devmgr_add_dev(accel_dev, NULL)) { |
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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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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_c62x(accel_dev->hw_device); |
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pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); |
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pci_read_config_dword(pdev, ADF_DEVICE_FUSECTL_OFFSET, |
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&hw_data->fuses); |
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pci_read_config_dword(pdev, ADF_C62X_SOFTSTRAP_CSR_OFFSET, |
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&hw_data->straps); |
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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); |
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hw_data->ae_mask = hw_data->get_ae_mask(hw_data); |
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accel_pci_dev->sku = hw_data->get_sku(hw_data); |
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/* If the device has no acceleration engines then ignore it. */ |
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if (!hw_data->accel_mask || !hw_data->ae_mask || |
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((~hw_data->ae_mask) & 0x01)) { |
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dev_err(&pdev->dev, "No acceleration units found"); |
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ret = -EFAULT; |
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goto out_err; |
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} |
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/* Create dev top level debugfs entry */ |
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snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX, |
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hw_data->dev_class->name, pci_name(pdev)); |
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accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); |
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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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ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)); |
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if (ret) { |
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dev_err(&pdev->dev, "No usable DMA configuration\n"); |
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goto out_err_disable; |
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} |
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if (pci_request_regions(pdev, ADF_C62X_DEVICE_NAME)) { |
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ret = -EFAULT; |
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goto out_err_disable; |
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} |
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/* Get accelerator capabilities mask */ |
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hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev); |
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/* Find and map all the device's BARS */ |
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i = (hw_data->fuses & ADF_DEVICE_FUSECTL_MASK) ? 1 : 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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if (adf_enable_aer(accel_dev)) { |
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dev_err(&pdev->dev, "Failed to enable aer\n"); |
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ret = -EFAULT; |
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goto out_err_free_reg; |
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} |
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if (pci_save_state(pdev)) { |
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dev_err(&pdev->dev, "Failed to save pci state\n"); |
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ret = -ENOMEM; |
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goto out_err_disable_aer; |
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} |
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ret = qat_crypto_dev_config(accel_dev); |
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if (ret) |
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goto out_err_disable_aer; |
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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_disable_aer: |
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adf_disable_aer(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_disable_aer(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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} |
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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_FIRMWARE(ADF_C62X_FW); |
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MODULE_FIRMWARE(ADF_C62X_MMP); |
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MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); |
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MODULE_VERSION(ADF_DRV_VERSION);
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