When a computer boots, the BIOS/UEFI and the Operating System (OS) scan the PCI bus. Every PCI device has a unique identifier consisting of a and a Device ID (e.g., an NVIDIA card might have a Vendor ID of 0x10DE ).
Before understanding the driver, one must understand the interface. is a standard for connecting peripheral devices to a computer's motherboard. Over time, it has evolved from the original parallel PCI bus to PCI-X, and finally to PCI Express (PCIe) , which is the current standard.
#include <linux/pci.h> #include <linux/module.h>
static int my_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
The kernel calls the driver’s probe() function when a matching device is found. Inside probe() , the driver must:
When a computer boots, the BIOS/UEFI and the Operating System (OS) scan the PCI bus. Every PCI device has a unique identifier consisting of a and a Device ID (e.g., an NVIDIA card might have a Vendor ID of 0x10DE ).
Before understanding the driver, one must understand the interface. is a standard for connecting peripheral devices to a computer's motherboard. Over time, it has evolved from the original parallel PCI bus to PCI-X, and finally to PCI Express (PCIe) , which is the current standard. pci device driver
#include <linux/pci.h> #include <linux/module.h> When a computer boots, the BIOS/UEFI and the
static int my_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) When a computer boots
The kernel calls the driver’s probe() function when a matching device is found. Inside probe() , the driver must: