drivers/crypto/intel/qat/qat_dh895xccvf/adf_drv.c

Source file repositories/reference/linux-study-clean/drivers/crypto/intel/qat/qat_dh895xccvf/adf_drv.c

File Facts

System
Linux kernel
Corpus path
drivers/crypto/intel/qat/qat_dh895xccvf/adf_drv.c
Extension
.c
Size
5813 bytes
Lines
228
Domain
Driver Families
Bucket
drivers/crypto
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

static struct pci_driver adf_driver = {
	.id_table = adf_pci_tbl,
	.name = ADF_DH895XCCVF_DEVICE_NAME,
	.probe = adf_probe,
	.remove = adf_remove,
};

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;
	struct adf_accel_dev *pf;
	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_DH895XCC_VF:
			adf_clean_hw_data_dh895xcciov(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);
	pf = adf_devmgr_pci_to_accel_dev(accel_pci_dev->pci_dev->physfn);
	adf_devmgr_rm_dev(accel_dev, pf);
}

static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct adf_accel_dev *accel_dev;
	struct adf_accel_dev *pf;
	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_DH895XCC_VF:
		break;
	default:
		dev_err(&pdev->dev, "Invalid device 0x%x.\n", ent->device);
		return -ENODEV;
	}

	accel_dev = kzalloc_node(sizeof(*accel_dev), GFP_KERNEL,
				 dev_to_node(&pdev->dev));
	if (!accel_dev)
		return -ENOMEM;

	accel_dev->is_vf = true;
	pf = adf_devmgr_pci_to_accel_dev(pdev->physfn);
	accel_pci_dev = &accel_dev->accel_pci_dev;
	accel_pci_dev->pci_dev = pdev;

	/* Add accel device to accel table */
	if (adf_devmgr_add_dev(accel_dev, pf)) {
		dev_err(&pdev->dev, "Failed to add new accelerator device.\n");
		kfree(accel_dev);
		return -EFAULT;
	}
	INIT_LIST_HEAD(&accel_dev->crypto_list);

	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_dh895xcciov(accel_dev->hw_device);

Annotation

Implementation Notes