diff options
Diffstat (limited to 'drivers/crypto/qat/qat_4xxx/adf_drv.c')
| -rw-r--r-- | drivers/crypto/qat/qat_4xxx/adf_drv.c | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/drivers/crypto/qat/qat_4xxx/adf_drv.c b/drivers/crypto/qat/qat_4xxx/adf_drv.c new file mode 100644 index 000000000000..a8805c815d16 --- /dev/null +++ b/drivers/crypto/qat/qat_4xxx/adf_drv.c @@ -0,0 +1,323 @@ +// 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 */ + if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { + if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) { + dev_err(&pdev->dev, "No usable DMA configuration.\n"); + ret = -EFAULT; + goto out_err; + } else { + pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); + } + } else { + pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); + } + + /* 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); + + if (adf_enable_aer(accel_dev)) { + dev_err(&pdev->dev, "Failed to enable aer.\n"); + ret = -EFAULT; + goto out_err; + } + + 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, +}; + +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"); |