drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
Extension
.c
Size
31080 bytes
Lines
1198
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source 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

if (err) {
			dev_err(&pdev->dev, "Failed to get capability\n");
			return err;
		}
		break;
	default:
		dev_err(&pdev->dev, "Unsupported PCI Function type\n");
		return -EINVAL;
	}

	return 0;
}

/**
 * init_msix - enable the msix and save the entries
 * @hwdev: the NIC HW device
 *
 * Return 0 - Success, negative - Failure
 **/
static int init_msix(struct hinic_hwdev *hwdev)
{
	struct hinic_hwif *hwif = hwdev->hwif;
	struct pci_dev *pdev = hwif->pdev;
	int nr_irqs, num_aeqs, num_ceqs;
	int i, err;

	num_aeqs = HINIC_HWIF_NUM_AEQS(hwif);
	num_ceqs = HINIC_HWIF_NUM_CEQS(hwif);
	nr_irqs = MAX_IRQS(HINIC_MAX_QPS, num_aeqs, num_ceqs);
	if (nr_irqs > HINIC_HWIF_NUM_IRQS(hwif))
		nr_irqs = HINIC_HWIF_NUM_IRQS(hwif);

	hwdev->msix_entries = devm_kcalloc(&pdev->dev, nr_irqs,
					   sizeof(*hwdev->msix_entries),
					   GFP_KERNEL);
	if (!hwdev->msix_entries)
		return -ENOMEM;

	for (i = 0; i < nr_irqs; i++)
		hwdev->msix_entries[i].entry = i;

	err = pci_enable_msix_exact(pdev, hwdev->msix_entries, nr_irqs);
	if (err) {
		dev_err(&pdev->dev, "Failed to enable pci msix\n");
		return err;
	}

	return 0;
}

/**
 * disable_msix - disable the msix
 * @hwdev: the NIC HW device
 **/
static void disable_msix(struct hinic_hwdev *hwdev)
{
	struct hinic_hwif *hwif = hwdev->hwif;
	struct pci_dev *pdev = hwif->pdev;

	pci_disable_msix(pdev);
}

/**
 * hinic_port_msg_cmd - send port msg to mgmt
 * @hwdev: the NIC HW device
 * @cmd: the port command
 * @buf_in: input buffer
 * @in_size: input size
 * @buf_out: output buffer
 * @out_size: returned output size
 *
 * Return 0 - Success, negative - Failure
 **/
int hinic_port_msg_cmd(struct hinic_hwdev *hwdev, enum hinic_port_cmd cmd,
		       void *buf_in, u16 in_size, void *buf_out, u16 *out_size)
{
	struct hinic_pfhwdev *pfhwdev;

	pfhwdev = container_of(hwdev, struct hinic_pfhwdev, hwdev);

	return hinic_msg_to_mgmt(&pfhwdev->pf_to_mgmt, HINIC_MOD_L2NIC, cmd,
				 buf_in, in_size, buf_out, out_size,
				 HINIC_MGMT_MSG_SYNC);
}

int hinic_hilink_msg_cmd(struct hinic_hwdev *hwdev, enum hinic_hilink_cmd cmd,
			 void *buf_in, u16 in_size, void *buf_out,
			 u16 *out_size)
{
	struct hinic_pfhwdev *pfhwdev;

Annotation

Implementation Notes