diff options
Diffstat (limited to 'drivers/crypto/intel/qat/qat_6xxx/adf_drv.c')
| -rw-r--r-- | drivers/crypto/intel/qat/qat_6xxx/adf_drv.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/drivers/crypto/intel/qat/qat_6xxx/adf_drv.c b/drivers/crypto/intel/qat/qat_6xxx/adf_drv.c new file mode 100644 index 000000000000..c1dc9c56fdf5 --- /dev/null +++ b/drivers/crypto/intel/qat/qat_6xxx/adf_drv.c @@ -0,0 +1,226 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright(c) 2025 Intel Corporation */ +#include <linux/array_size.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/types.h> + +#include <adf_accel_devices.h> +#include <adf_cfg.h> +#include <adf_common_drv.h> +#include <adf_dbgfs.h> + +#include "adf_gen6_shared.h" +#include "adf_6xxx_hw_data.h" + +static int bar_map[] = { + 0, /* SRAM */ + 2, /* PMISC */ + 4, /* ETR */ +}; + +static void adf_device_down(void *accel_dev) +{ + adf_dev_down(accel_dev); +} + +static void adf_dbgfs_cleanup(void *accel_dev) +{ + adf_dbgfs_exit(accel_dev); +} + +static void adf_cfg_device_remove(void *accel_dev) +{ + adf_cfg_dev_remove(accel_dev); +} + +static void adf_cleanup_hw_data(void *accel_dev) +{ + struct adf_accel_dev *accel_device = accel_dev; + + if (accel_device->hw_device) { + adf_clean_hw_data_6xxx(accel_device->hw_device); + accel_device->hw_device = NULL; + } +} + +static void adf_devmgr_remove(void *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_pci *accel_pci_dev; + struct adf_hw_device_data *hw_data; + struct device *dev = &pdev->dev; + struct adf_accel_dev *accel_dev; + struct adf_bar *bar; + unsigned int i; + int ret; + + if (num_possible_nodes() > 1 && dev_to_node(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. + */ + return dev_err_probe(dev, -EINVAL, "Invalid NUMA configuration.\n"); + } + + accel_dev = devm_kzalloc(dev, sizeof(*accel_dev), GFP_KERNEL); + if (!accel_dev) + return -ENOMEM; + + INIT_LIST_HEAD(&accel_dev->crypto_list); + INIT_LIST_HEAD(&accel_dev->list); + accel_pci_dev = &accel_dev->accel_pci_dev; + accel_pci_dev->pci_dev = pdev; + accel_dev->owner = THIS_MODULE; + + hw_data = devm_kzalloc(dev, sizeof(*hw_data), GFP_KERNEL); + if (!hw_data) + return -ENOMEM; + + pci_read_config_byte(pdev, PCI_REVISION_ID, &accel_pci_dev->revid); + pci_read_config_dword(pdev, ADF_GEN6_FUSECTL4_OFFSET, &hw_data->fuses[ADF_FUSECTL4]); + pci_read_config_dword(pdev, ADF_GEN6_FUSECTL0_OFFSET, &hw_data->fuses[ADF_FUSECTL0]); + pci_read_config_dword(pdev, ADF_GEN6_FUSECTL1_OFFSET, &hw_data->fuses[ADF_FUSECTL1]); + + if (!(hw_data->fuses[ADF_FUSECTL1] & ICP_ACCEL_GEN6_MASK_WCP_WAT_SLICE)) + return dev_err_probe(dev, -EFAULT, "Wireless mode is not supported.\n"); + + /* Enable PCI device */ + ret = pcim_enable_device(pdev); + if (ret) + return dev_err_probe(dev, ret, "Cannot enable PCI device.\n"); + + ret = adf_devmgr_add_dev(accel_dev, NULL); + if (ret) + return dev_err_probe(dev, ret, "Failed to add new accelerator device.\n"); + + ret = devm_add_action_or_reset(dev, adf_devmgr_remove, accel_dev); + if (ret) + return ret; + + accel_dev->hw_device = hw_data; + adf_init_hw_data_6xxx(accel_dev->hw_device); + + ret = devm_add_action_or_reset(dev, adf_cleanup_hw_data, accel_dev); + if (ret) + return ret; + + /* Get Accelerators and Accelerator Engine 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 & ADF_GEN6_ACCELERATORS_MASK)) { + ret = -EFAULT; + return dev_err_probe(dev, ret, "No acceleration units were found.\n"); + } + + /* Create device configuration table */ + ret = adf_cfg_dev_add(accel_dev); + if (ret) + return ret; + + ret = devm_add_action_or_reset(dev, adf_cfg_device_remove, accel_dev); + if (ret) + return ret; + + /* Set DMA identifier */ + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); + if (ret) + return dev_err_probe(dev, ret, "No usable DMA configuration.\n"); + + ret = adf_gen6_cfg_dev_init(accel_dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize configuration.\n"); + + /* Get accelerator capability mask */ + hw_data->accel_capabilities_mask = hw_data->get_accel_cap(accel_dev); + if (!hw_data->accel_capabilities_mask) { + ret = -EINVAL; + return dev_err_probe(dev, ret, "Failed to get capabilities mask.\n"); + } + + for (i = 0; i < ARRAY_SIZE(bar_map); i++) { + bar = &accel_pci_dev->pci_bars[i]; + + /* Map 64-bit PCIe BAR */ + bar->virt_addr = pcim_iomap_region(pdev, bar_map[i], pci_name(pdev)); + if (IS_ERR(bar->virt_addr)) { + ret = PTR_ERR(bar->virt_addr); + return dev_err_probe(dev, ret, "Failed to ioremap PCI region.\n"); + } + } + + pci_set_master(pdev); + + /* + * The PCI config space is saved at this point and will be restored + * after a Function Level Reset (FLR) as the FLR does not completely + * restore it. + */ + ret = pci_save_state(pdev); + if (ret) + return dev_err_probe(dev, ret, "Failed to save pci state.\n"); + + accel_dev->ras_errors.enabled = true; + + adf_dbgfs_init(accel_dev); + + ret = devm_add_action_or_reset(dev, adf_dbgfs_cleanup, accel_dev); + if (ret) + return ret; + + ret = adf_dev_up(accel_dev, true); + if (ret) + return ret; + + ret = devm_add_action_or_reset(dev, adf_device_down, accel_dev); + if (ret) + return ret; + + ret = adf_sysfs_init(accel_dev); + + return ret; +} + +static void adf_shutdown(struct pci_dev *pdev) +{ + struct adf_accel_dev *accel_dev = adf_devmgr_pci_to_accel_dev(pdev); + + adf_dev_down(accel_dev); +} + +static const struct pci_device_id adf_pci_tbl[] = { + { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_QAT_6XXX) }, + { } +}; +MODULE_DEVICE_TABLE(pci, adf_pci_tbl); + +static struct pci_driver adf_driver = { + .id_table = adf_pci_tbl, + .name = ADF_6XXX_DEVICE_NAME, + .probe = adf_probe, + .shutdown = adf_shutdown, + .sriov_configure = adf_sriov_configure, + .err_handler = &adf_err_handler, +}; +module_pci_driver(adf_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Intel"); +MODULE_FIRMWARE(ADF_6XXX_FW); +MODULE_FIRMWARE(ADF_6XXX_MMP); +MODULE_DESCRIPTION("Intel(R) QuickAssist Technology for GEN6 Devices"); +MODULE_SOFTDEP("pre: crypto-intel_qat"); +MODULE_IMPORT_NS("CRYPTO_QAT"); |