I was able to get the data sheet of the same from Intel website and as per data sheet it says IO address are mapped to Bar 2 (Refer to pg 87) and MAC can be read using RAL/RAH register which are at offset RAL (05400h + 8*n R/W) and RAH (05404h + 8n R/W)Ģ 18h IO Register Base Address (bits 31:2) 0b memīased on this information, i wrote a small PCI driver but i always get the MAC as fff and when i debugged further, i see io_base address is always zero.Ģ Program to find a device on the PCI sub-systemġ6 #define LOG(string.) printk(KERN_INFO string)Ģ9 int device_probe(struct pci_dev *dev, const struct pci_device_id *id) ģ0 void device_remove(struct pci_dev *dev) ģ2 struct pci_device_id pci_device_id_DevicePCI =ģ4 ,ģ7 struct pci_driver pci_driver_DevicePCI =ĥ1 pci_register_driver(&pci_driver_DevicePCI) ĥ8 pci_unregister_driver(&pci_driver_DevicePCI) Ħ4 int device_probe(struct pci_dev *dev, const struct pci_device_id *id)ħ4 /* Reserve the access to PCI device */ħ5 ret = pci_request_region(dev, bar, 'my_pci') ħ7 printk(KERN_ERR 'request region failed :%d ', ret) Ĩ2 if (ret < 0 ) LOG('Failed while enabling.

Running a Ubuntu on VM and my Ethernet card is Intel one as followsĠ0:08.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02) I was trying to write a pci driver which can display the MAC address of my Ethernet card.

Get mac address for linux