| // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) |
| /* Copyright(c) 2014 - 2020 Intel Corporation */ |
| #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_dbgfs.h> |
| #include "adf_c62x_hw_data.h" |
| |
| static const struct pci_device_id adf_pci_tbl[] = { |
| { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_C62X), }, |
| { } |
| }; |
| 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_C62X_DEVICE_NAME, |
| .probe = adf_probe, |
| .remove = adf_remove, |
| .sriov_configure = adf_sriov_configure, |
| .err_handler = &adf_err_handler, |
| }; |
| |
| 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; |
| 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 PCI_DEVICE_ID_INTEL_QAT_C62X: |
| adf_clean_hw_data_c62x(accel_dev->hw_device); |
| break; |
| default: |
| break; |
| } |
| kfree(accel_dev->hw_device); |
| accel_dev->hw_device = NULL; |
| } |
| adf_dbgfs_exit(accel_dev); |
| adf_cfg_dev_remove(accel_dev); |
| adf_devmgr_rm_dev(accel_dev, NULL); |
| } |
| |
| static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| struct adf_accel_dev *accel_dev; |
| struct adf_accel_pci *accel_pci_dev; |
| struct adf_hw_device_data *hw_data; |
| unsigned int i, bar_nr; |
| unsigned long bar_mask; |
| int ret; |
| |
| switch (ent->device) { |
| case PCI_DEVICE_ID_INTEL_QAT_C62X: |
| break; |
| default: |
| dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device); |
| return -ENODEV; |
| } |
| |
| if (num_possible_nodes() > 1 && dev_to_node(&pdev->dev) < 0) { |
| /* If the accelerator is connected to a node with no memory |
| * there is no point in using the accelerator since the remote |
| * memory transaction will be very slow. */ |
| dev_err(&pdev->dev, "Invalid NUMA configuration.\n"); |
| return -EINVAL; |
| } |
| |
| accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL, |
| dev_to_node(&pdev->dev)); |
| if (!accel_dev) |
| return -ENOMEM; |
| |
| INIT_LIST_HEAD(&accel_dev->crypto_list); |
| accel_pci_dev = &accel_dev->accel_pci_dev; |
| accel_pci_dev->pci_dev = pdev; |
| |
| /* Add accel device to accel table. |
| * This should be called before adf_cleanup_accel is called */ |
| if (adf_devmgr_add_dev(accel_dev, NULL)) { |
| dev_err(&pdev->dev, "Failed to add new accelerator device.\n"); |
| kfree(accel_dev); |
| return -EFAULT; |
| } |
| |
| 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_c62x(accel_dev->hw_device); |
| pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); |
| pci_read_config_dword(pdev, ADF_DEVICE_FUSECTL_OFFSET, |
| &hw_data->fuses); |
| pci_read_config_dword(pdev, ADF_C62X_SOFTSTRAP_CSR_OFFSET, |
| &hw_data->straps); |
| |
| /* Get Accelerators and Accelerators Engines masks */ |
| hw_data->accel_mask = hw_data->get_accel_mask(hw_data); |
| hw_data->ae_mask = hw_data->get_ae_mask(hw_data); |
| accel_pci_dev->sku = hw_data->get_sku(hw_data); |
| /* If the device has no acceleration engines then ignore it. */ |
| if (!hw_data->accel_mask || !hw_data->ae_mask || |
| ((~hw_data->ae_mask) & 0x01)) { |
| dev_err(&pdev->dev, "No acceleration units found"); |
| ret = -EFAULT; |
| 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 */ |
| ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)); |
| if (ret) { |
| dev_err(&pdev->dev, "No usable DMA configuration\n"); |
| goto out_err_disable; |
| } |
| |
| if (pci_request_regions(pdev, ADF_C62X_DEVICE_NAME)) { |
| ret = -EFAULT; |
| goto out_err_disable; |
| } |
| |
| /* Get accelerator capabilities mask */ |
| hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev); |
| |
| /* Find and map all the device's BARS */ |
| i = (hw_data->fuses & ADF_DEVICE_FUSECTL_MASK) ? 1 : 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); |
| |
| if (pci_save_state(pdev)) { |
| dev_err(&pdev->dev, "Failed to save pci state\n"); |
| ret = -ENOMEM; |
| goto out_err_free_reg; |
| } |
| |
| adf_dbgfs_init(accel_dev); |
| |
| ret = adf_dev_up(accel_dev, true); |
| if (ret) |
| goto out_err_dev_stop; |
| |
| return ret; |
| |
| out_err_dev_stop: |
| adf_dev_down(accel_dev, false); |
| 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_down(accel_dev, false); |
| 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); |
| } |
| |
| module_init(adfdrv_init); |
| module_exit(adfdrv_release); |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_AUTHOR("Intel"); |
| MODULE_FIRMWARE(ADF_C62X_FW); |
| MODULE_FIRMWARE(ADF_C62X_MMP); |
| MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); |
| MODULE_VERSION(ADF_DRV_VERSION); |
| MODULE_IMPORT_NS(CRYPTO_QAT); |