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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2004 Tyan Computer
* Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
* Copyright (C) 2006,2007 AMD
* Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/smbus.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <device/mmio.h>
#include <delay.h>
#include "mcp55.h"
static int phy_read(u8 *base, unsigned phy_addr, unsigned phy_reg)
{
u32 dword;
unsigned loop = 0x100;
write32(base + 0x190, 0x8000); /* Clear MDIO lock bit. */
mdelay(1);
dword = read32(base + 0x190);
if (dword & (1 << 15))
return -1;
write32(base + 0x180, 1);
write32(base + 0x190, (phy_addr << 5) | (phy_reg));
do {
dword = read32(base + 0x190);
if (--loop == 0)
return -4;
} while ((dword & (1 << 15)));
dword = read32(base + 0x180);
if (dword & 1)
return -3;
dword = read32(base + 0x194);
return dword;
}
static void phy_detect(u8 *base)
{
u32 dword;
int i, val;
unsigned id;
dword = read32(base + 0x188);
dword &= ~(1 << 20);
write32(base + 0x188, dword);
phy_read(base, 0, 1);
for (i = 1; i <= 32; i++) {
int phyaddr = i & 0x1f;
val = phy_read(base, phyaddr, 1);
if (val < 0)
continue;
if ((val & 0xffff) == 0xffff)
continue;
if ((val & 0xffff) == 0)
continue;
if (!(val & 1))
break; /* Ethernet PHY */
val = phy_read(base, phyaddr, 3);
if (val < 0 || val == 0xffff)
continue;
id = val & 0xfc00;
val = phy_read(base, phyaddr, 2);
if (val < 0 || val == 0xffff)
continue;
id |= ((val & 0xffff) << 16);
printk(BIOS_DEBUG, "MCP55 MAC PHY ID 0x%08x PHY ADDR %d\n",
id, i);
// if ((id == 0xe0180000) || (id == 0x0032cc00))
break;
}
if (i > 32)
printk(BIOS_DEBUG, "MCP55 MAC PHY not found\n");
}
static void nic_init(struct device *dev)
{
u8 *base;
u32 mac_h = 0, mac_l = 0;
int eeprom_valid = 0;
struct southbridge_nvidia_mcp55_config *conf;
static u32 nic_index = 0;
struct resource *res;
res = find_resource(dev, 0x10);
if (!res)
return;
base = res2mmio(res, 0, 0);
phy_detect(base);
#define NvRegPhyInterface 0xC0
#define PHY_RGMII 0x10000000
write32(base + NvRegPhyInterface, PHY_RGMII);
conf = dev->chip_info;
if (conf->mac_eeprom_smbus != 0) {
// read MAC address from EEPROM at first
struct device *dev_eeprom;
dev_eeprom = dev_find_slot_on_smbus(conf->mac_eeprom_smbus, conf->mac_eeprom_addr);
if (dev_eeprom) {
// if that is valid we will use that
unsigned char dat[6];
int status;
int i;
for (i=0;i<6;i++) {
status = smbus_read_byte(dev_eeprom, i);
if (status < 0) break;
dat[i] = status & 0xff;
}
if (status >= 0) {
mac_l = 0;
for (i=3;i>=0;i--) {
mac_l <<= 8;
mac_l += dat[i];
}
if (mac_l != 0xffffffff) {
mac_l += nic_index;
mac_h = 0;
for (i=5;i>=4;i--) {
mac_h <<= 8;
mac_h += dat[i];
}
eeprom_valid = 1;
}
}
}
}
// if that is invalid we will read that from romstrap
if (!eeprom_valid) {
u32 *mac_pos;
mac_pos = (u32 *)0xffffffd0; // refer to romstrap.inc and romstrap.ld
mac_l = read32(mac_pos) + nic_index; // overflow?
mac_h = read32(mac_pos + 1);
}
#if 1
// set that into NIC MMIO
#define NvRegMacAddrA 0xA8
#define NvRegMacAddrB 0xAC
write32(base + NvRegMacAddrA, mac_l);
write32(base + NvRegMacAddrB, mac_h);
#else
// set that into NIC
pci_write_config32(dev, 0xa8, mac_l);
pci_write_config32(dev, 0xac, mac_h);
#endif
nic_index++;
}
static struct device_operations nic_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = nic_init,
.scan_bus = 0,
// .enable = mcp55_enable,
.ops_pci = &mcp55_pci_ops,
};
static const struct pci_driver nic_driver __pci_driver = {
.ops = &nic_ops,
.vendor = PCI_VENDOR_ID_NVIDIA,
.device = PCI_DEVICE_ID_NVIDIA_MCP55_NIC,
};
static const struct pci_driver nic_bridge_driver __pci_driver = {
.ops = &nic_ops,
.vendor = PCI_VENDOR_ID_NVIDIA,
.device = PCI_DEVICE_ID_NVIDIA_MCP55_NIC_BRIDGE,
};
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