| // SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only) |
| /* Copyright(c) 2020 Intel Corporation */ |
| #include <linux/device.h> |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| |
| #include <adf_accel_devices.h> |
| #include <adf_cfg.h> |
| #include <adf_common_drv.h> |
| |
| #include "adf_4xxx_hw_data.h" |
| #include "qat_crypto.h" |
| #include "adf_transport_access_macros.h" |
| |
| static const struct pci_device_id adf_pci_tbl[] = { |
| { PCI_VDEVICE(INTEL, ADF_4XXX_PCI_DEVICE_ID), }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(pci, adf_pci_tbl); |
| |
| static void adf_cleanup_accel(struct adf_accel_dev *accel_dev) |
| { |
| if (accel_dev->hw_device) { |
| adf_clean_hw_data_4xxx(accel_dev->hw_device); |
| accel_dev->hw_device = NULL; |
| } |
| adf_cfg_dev_remove(accel_dev); |
| debugfs_remove(accel_dev->debugfs_dir); |
| adf_devmgr_rm_dev(accel_dev, NULL); |
| } |
| |
| static int adf_crypto_dev_config(struct adf_accel_dev *accel_dev) |
| { |
| char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES]; |
| int banks = GET_MAX_BANKS(accel_dev); |
| int cpus = num_online_cpus(); |
| unsigned long bank, val; |
| int instances; |
| int ret; |
| int i; |
| |
| if (adf_hw_dev_has_crypto(accel_dev)) |
| instances = min(cpus, banks / 2); |
| else |
| instances = 0; |
| |
| ret = adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC); |
| if (ret) |
| goto err; |
| |
| ret = adf_cfg_section_add(accel_dev, "Accelerator0"); |
| if (ret) |
| goto err; |
| |
| for (i = 0; i < instances; i++) { |
| val = i; |
| bank = i * 2; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_BANK_NUM, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &bank, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| bank += 1; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_BANK_NUM, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &bank, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_ETRMGR_CORE_AFFINITY, |
| i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_SIZE, i); |
| val = 128; |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| val = 512; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_SIZE, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| val = 0; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_TX, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| val = 0; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_TX, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| val = 1; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_ASYM_RX, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| val = 1; |
| snprintf(key, sizeof(key), ADF_CY "%d" ADF_RING_SYM_RX, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| val = ADF_COALESCING_DEF_TIME; |
| snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i); |
| ret = adf_cfg_add_key_value_param(accel_dev, "Accelerator0", |
| key, &val, ADF_DEC); |
| if (ret) |
| goto err; |
| } |
| |
| val = i; |
| ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, ADF_NUM_CY, |
| &val, ADF_DEC); |
| if (ret) |
| goto err; |
| |
| set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status); |
| return 0; |
| err: |
| dev_err(&GET_DEV(accel_dev), "Failed to start QAT accel dev\n"); |
| return ret; |
| } |
| |
| 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; |
| char name[ADF_DEVICE_NAME_LENGTH]; |
| unsigned int i, bar_nr; |
| unsigned long bar_mask; |
| struct adf_bar *bar; |
| int ret; |
| |
| 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 = devm_kzalloc(&pdev->dev, sizeof(*accel_dev), GFP_KERNEL); |
| 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"); |
| return -EFAULT; |
| } |
| |
| accel_dev->owner = THIS_MODULE; |
| /* Allocate and initialise device hardware meta-data structure */ |
| hw_data = devm_kzalloc(&pdev->dev, sizeof(*hw_data), GFP_KERNEL); |
| if (!hw_data) { |
| ret = -ENOMEM; |
| goto out_err; |
| } |
| |
| accel_dev->hw_device = hw_data; |
| adf_init_hw_data_4xxx(accel_dev->hw_device); |
| |
| pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); |
| pci_read_config_dword(pdev, ADF_4XXX_FUSECTL4_OFFSET, &hw_data->fuses); |
| |
| /* 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.\n"); |
| ret = -EFAULT; |
| goto out_err; |
| } |
| |
| /* Create dev top level debugfs entry */ |
| snprintf(name, sizeof(name), "%s%s_%s", ADF_DEVICE_NAME_PREFIX, |
| hw_data->dev_class->name, pci_name(pdev)); |
| |
| accel_dev->debugfs_dir = debugfs_create_dir(name, NULL); |
| |
| /* Create device configuration table */ |
| ret = adf_cfg_dev_add(accel_dev); |
| if (ret) |
| goto out_err; |
| |
| /* Enable PCI device */ |
| ret = pcim_enable_device(pdev); |
| if (ret) { |
| dev_err(&pdev->dev, "Can't enable PCI device.\n"); |
| goto out_err; |
| } |
| |
| /* Set DMA identifier */ |
| ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
| if (ret) { |
| dev_err(&pdev->dev, "No usable DMA configuration.\n"); |
| goto out_err; |
| } |
| |
| /* Get accelerator capabilities mask */ |
| hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev); |
| |
| /* Find and map all the device's BARS */ |
| bar_mask = pci_select_bars(pdev, IORESOURCE_MEM) & ADF_4XXX_BAR_MASK; |
| |
| ret = pcim_iomap_regions_request_all(pdev, bar_mask, pci_name(pdev)); |
| if (ret) { |
| dev_err(&pdev->dev, "Failed to map pci regions.\n"); |
| goto out_err; |
| } |
| |
| i = 0; |
| for_each_set_bit(bar_nr, &bar_mask, PCI_STD_NUM_BARS) { |
| bar = &accel_pci_dev->pci_bars[i++]; |
| bar->virt_addr = pcim_iomap_table(pdev)[bar_nr]; |
| } |
| |
| pci_set_master(pdev); |
| |
| adf_enable_aer(accel_dev); |
| |
| if (pci_save_state(pdev)) { |
| dev_err(&pdev->dev, "Failed to save pci state.\n"); |
| ret = -ENOMEM; |
| goto out_err_disable_aer; |
| } |
| |
| ret = adf_crypto_dev_config(accel_dev); |
| if (ret) |
| goto out_err_disable_aer; |
| |
| ret = adf_dev_init(accel_dev); |
| if (ret) |
| goto out_err_dev_shutdown; |
| |
| 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_disable_aer: |
| adf_disable_aer(accel_dev); |
| out_err: |
| adf_cleanup_accel(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_disable_aer(accel_dev); |
| adf_cleanup_accel(accel_dev); |
| } |
| |
| static struct pci_driver adf_driver = { |
| .id_table = adf_pci_tbl, |
| .name = ADF_4XXX_DEVICE_NAME, |
| .probe = adf_probe, |
| .remove = adf_remove, |
| .sriov_configure = adf_sriov_configure, |
| .err_handler = &adf_err_handler, |
| }; |
| |
| module_pci_driver(adf_driver); |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_AUTHOR("Intel"); |
| MODULE_FIRMWARE(ADF_4XXX_FW); |
| MODULE_FIRMWARE(ADF_4XXX_MMP); |
| MODULE_DESCRIPTION("Intel(R) QuickAssist Technology"); |
| MODULE_VERSION(ADF_DRV_VERSION); |
| MODULE_SOFTDEP("pre: crypto-intel_qat"); |