Device Driver - Pci

// 6. Initialize device-specific state my_device_init(regs);

By: Engineering Staff

static int my_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci device driver

// 4. Map BAR0 (control registers) into kernel virtual address space void __iomem *regs = pci_iomap(pdev, 0, 0); // 6. Initialize device-specific state my_device_init(regs)

static int my_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) static int my_pci_probe(struct pci_dev *pdev

In modern computing, the Peripheral Component Interconnect (PCI) bus is the circulatory system of the motherboard. From GPUs and NVMe SSDs to network adapters and sound cards, almost every high-speed peripheral relies on PCI or its derivatives (PCIe).

static struct pci_driver my_pci_driver = .name = "my_pci_driver", .id_table = my_ids, .probe = my_probe, .remove = my_remove, ;