| /* |
| * 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; |
| |
| /* Ensble but do not set bus master. That's dangerous on a NIC. */ |
| pci_write_config16(dev, PCI_COMMAND, |
| 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, |
| }; |