/* * This file is part of the coreboot project. * * Copyright (C) 2016 Damien Zammit <damien@zamaudio.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ /* * This driver forces the 10ec:8168 device to reset so that it goes * into a proper power state, also programs a default MAC address * so that if the EEPROM/efuse is unconfigured it still has a default MAC. */ #include <arch/io.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ops.h> #include <device/pci_def.h> #include <delay.h> #include <console/console.h> #define NIC_TIMEOUT 1000 #define CMD_REG 0x37 #define CMD_REG_RESET 0x10 #define CFG_9346 0x50 #define CFG_9346_LOCK 0x00 #define CFG_9346_UNLOCK 0xc0 static void r8168_init(struct device *dev) { u32 i; const u8 mac[6] = { 0x00, 0xe0, 0x4c, 0x00, 0xc0, 0xb0 }; /* Get the resource of the NIC mmio */ struct resource *nic_res = find_resource(dev, PCI_BASE_ADDRESS_0); u16 nic_port = (u16)nic_res->base; /* Set bus master */ pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); /* Reset NIC */ printk(BIOS_DEBUG, "r8168: Resetting NIC..."); outb(CMD_REG_RESET, nic_port + CMD_REG); i = 0; /* Poll for reset, with 1s timeout */ while (i < NIC_TIMEOUT && (inb(nic_port + CMD_REG) & CMD_REG_RESET)) { udelay(1000); if (++i >= NIC_TIMEOUT) printk(BIOS_DEBUG, "timeout waiting for nic to reset\n"); } if (i < NIC_TIMEOUT) printk(BIOS_DEBUG, "done\n"); /* Unlock config regs */ outb(CFG_9346_UNLOCK, nic_port + CFG_9346); /* Set MAC address 00:e0:4c:00:c0:b0 * NB: only 4-byte write accesses allowed */ outl(mac[4] | mac[5] << 8, nic_port + 4); inl(nic_port + 4); outl(mac[0] | mac[1] << 8 | mac[2] << 16 | mac[3] << 24, nic_port); inl(nic_port); /* Lock config regs */ outb(CFG_9346_LOCK, nic_port + CFG_9346); } static struct device_operations r8168_ops = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = r8168_init, .scan_bus = 0, }; static const struct pci_driver r8168_driver __pci_driver = { .ops = &r8168_ops, .vendor = 0x10ec, .device = 0x8168, };