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317 lines
8.0 KiB
317 lines
8.0 KiB
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) |
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/* Copyright(c) 2020 Intel Corporation */ |
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#include <linux/device.h> |
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#include <linux/module.h> |
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#include <linux/pci.h> |
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#include <adf_accel_devices.h> |
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#include <adf_cfg.h> |
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#include <adf_common_drv.h> |
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#include "adf_4xxx_hw_data.h" |
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#include "qat_crypto.h" |
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#include "adf_transport_access_macros.h" |
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static const struct pci_device_id adf_pci_tbl[] = { |
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{ PCI_VDEVICE(INTEL, ADF_4XXX_PCI_DEVICE_ID), }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(pci, adf_pci_tbl); |
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static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) |
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{ |
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if (accel_dev->hw_device) { |
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adf_clean_hw_data_4xxx(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_crypto_dev_config(struct adf_accel_dev *accel_dev) |
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{ |
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char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES]; |
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int banks = GET_MAX_BANKS(accel_dev); |
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int cpus = num_online_cpus(); |
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unsigned long bank, val; |
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int instances; |
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int ret; |
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int i; |
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if (adf_hw_dev_has_crypto(accel_dev)) |
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instances = min(cpus, banks / 2); |
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else |
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instances = 0; |
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ret = adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC); |
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if (ret) |
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goto err; |
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ret = adf_cfg_section_add(accel_dev, "Accelerator0"); |
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if (ret) |
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goto err; |
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for (i = 0; i < instances; i++) { |
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val = i; |
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bank = i * 2; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_BANK_NUM, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &bank, ADF_DEC); |
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if (ret) |
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goto err; |
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bank += 1; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_BANK_NUM, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &bank, ADF_DEC); |
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if (ret) |
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goto err; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_ETRMGR_CORE_AFFINITY, |
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i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i); |
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val = 128; |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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val = 512; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_SIZE, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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val = 0; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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val = 0; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_TX, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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val = 1; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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val = 1; |
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snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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val = ADF_COALESCING_DEF_TIME; |
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snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i); |
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ret = adf_cfg_add_key_value_param(accel_dev, "Accelerator0", |
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key, &val, ADF_DEC); |
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if (ret) |
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goto err; |
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} |
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val = i; |
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ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, ADF_NUM_CY, |
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&val, ADF_DEC); |
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if (ret) |
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goto err; |
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set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status); |
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return 0; |
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err: |
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dev_err(&GET_DEV(accel_dev), "Failed to start QAT accel dev\n"); |
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return ret; |
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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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struct adf_bar *bar; |
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int ret; |
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if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { |
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/* |
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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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*/ |
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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 = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL); |
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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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/* |
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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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*/ |
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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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return -EFAULT; |
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} |
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accel_dev->owner = THIS_MODULE; |
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/* Allocate and initialise device hardware meta-data structure */ |
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hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL); |
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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_4xxx(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_4XXX_FUSECTL4_OFFSET, &hw_data->fuses); |
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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.\n"); |
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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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ret = pcim_enable_device(pdev); |
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if (ret) { |
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dev_err(&pdev->dev, "Can't enable PCI device.\n"); |
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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(64)); |
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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; |
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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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bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_4XXX_BAR_MASK; |
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ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev)); |
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if (ret) { |
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dev_err(&pdev->dev, "Failed to map pci regions.\n"); |
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goto out_err; |
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} |
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i = 0; |
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for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) { |
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bar = &accel_pci_dev->pci_bars[i++]; |
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bar->virt_addr = pcim_iomap_table(pdev)[bar_nr]; |
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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; |
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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 = adf_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: |
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adf_cleanup_accel(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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} |
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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_4XXX_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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module_pci_driver(adf_driver); |
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MODULE_LICENSE("Dual BSD/GPL"); |
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MODULE_AUTHOR("Intel"); |
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MODULE_FIRMWARE(ADF_4XXX_FW); |
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MODULE_FIRMWARE(ADF_4XXX_MMP); |
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MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); |
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MODULE_VERSION(ADF_DRV_VERSION); |
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MODULE_SOFTDEP("pre: crypto-intel_qat");
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