Add support for the NVIDIA MCP55 southbridge.

Signed-off-by: Yinghai Lu <yinghai.lu@amd.com>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Yinghai Lu <yinghai.lu@amd.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2540 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 402 insertions, 0 deletions

diff --git a/src/southbridge/nvidia/mcp55/mcp55_lpc.c b/src/southbridge/nvidia/mcp55/mcp55_lpc.c
new file mode 100644
index 0000000000..8ed8e21581
--- /dev/null
+++ b/src/southbridge/nvidia/mcp55/mcp55_lpc.c
@@ -0,0 +1,402 @@
+/*
+ * This file is part of the LinuxBIOS project.
+ *
+ * Copyright (C) 2003 Linux Networx
+ * Copyright (C) 2003 SuSE Linux AG
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pnp.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <pc80/mc146818rtc.h>
+#include <pc80/isa-dma.h>
+#include <bitops.h>
+#include <arch/io.h>
+#include <cpu/x86/lapic.h>
+#include "mcp55.h"
+
+#define NMI_OFF	0
+
+struct ioapicreg {
+	unsigned int reg;
+	unsigned int value_low, value_high;
+};
+
+static struct ioapicreg ioapicregvalues[] = {
+#define ALL		(0xff << 24)
+#define NONE		(0)
+#define DISABLED	(1 << 16)
+#define ENABLED		(0 << 16)
+#define TRIGGER_EDGE	(0 << 15)
+#define TRIGGER_LEVEL	(1 << 15)
+#define POLARITY_HIGH	(0 << 13)
+#define POLARITY_LOW	(1 << 13)
+#define PHYSICAL_DEST	(0 << 11)
+#define LOGICAL_DEST	(1 << 11)
+#define ExtINT		(7 << 8)
+#define NMI		(4 << 8)
+#define SMI		(2 << 8)
+#define INT		(1 << 8)
+	/* IO-APIC virtual wire mode configuration */
+	/* mask, trigger, polarity, destination, delivery, vector */
+	{   0, ENABLED | TRIGGER_EDGE | POLARITY_HIGH | PHYSICAL_DEST | ExtINT, NONE},
+	{   1, DISABLED, NONE},
+	{   2, DISABLED, NONE},
+	{   3, DISABLED, NONE},
+	{   4, DISABLED, NONE},
+	{   5, DISABLED, NONE},
+	{   6, DISABLED, NONE},
+	{   7, DISABLED, NONE},
+	{   8, DISABLED, NONE},
+	{   9, DISABLED, NONE},
+	{  10, DISABLED, NONE},
+	{  11, DISABLED, NONE},
+	{  12, DISABLED, NONE},
+	{  13, DISABLED, NONE},
+	{  14, DISABLED, NONE},
+	{  15, DISABLED, NONE},
+	{  16, DISABLED, NONE},
+	{  17, DISABLED, NONE},
+	{  18, DISABLED, NONE},
+	{  19, DISABLED, NONE},
+	{  20, DISABLED, NONE},
+	{  21, DISABLED, NONE},
+	{  22, DISABLED, NONE},
+	{  23, DISABLED, NONE},
+	/* Be careful and don't write past the end... */
+};
+
+static void setup_ioapic(unsigned long ioapic_base)
+{
+	int i;
+	unsigned long value_low, value_high;
+//	unsigned long ioapic_base = 0xfec00000;
+	volatile unsigned long *l;
+	struct ioapicreg *a = ioapicregvalues;
+
+	ioapicregvalues[0].value_high = lapicid()<<(56-32);
+
+	l = (unsigned long *) ioapic_base;
+
+	for (i = 0; i < sizeof(ioapicregvalues) / sizeof(ioapicregvalues[0]);
+	     i++, a++) {
+		l[0] = (a->reg * 2) + 0x10;
+		l[4] = a->value_low;
+		value_low = l[4];
+		l[0] = (a->reg *2) + 0x11;
+		l[4] = a->value_high;
+		value_high = l[4];
+		if ((i==0) && (value_low == 0xffffffff)) {
+			printk_warning("IO APIC not responding.\n");
+			return;
+		}
+		printk_spew("for IRQ, reg 0x%08x value 0x%08x 0x%08x\n",
+			    a->reg, a->value_low, a->value_high);
+	}
+}
+
+// 0x7a or e3
+#define PREVIOUS_POWER_STATE	0x7A
+
+#define MAINBOARD_POWER_OFF	0
+#define MAINBOARD_POWER_ON	1
+#define SLOW_CPU_OFF	0
+#define SLOW_CPU__ON	1
+
+#ifndef MAINBOARD_POWER_ON_AFTER_POWER_FAIL
+#define MAINBOARD_POWER_ON_AFTER_POWER_FAIL	MAINBOARD_POWER_ON
+#endif
+
+static void lpc_common_init(device_t dev)
+{
+	uint8_t byte;
+	uint32_t dword;
+
+	/* IO APIC initialization */
+	byte = pci_read_config8(dev, 0x74);
+	byte |= (1<<0); // enable APIC
+	pci_write_config8(dev, 0x74, byte);
+	dword = pci_read_config32(dev, PCI_BASE_ADDRESS_1); // 0x14
+
+	setup_ioapic(dword);
+
+}
+
+static void lpc_slave_init(device_t dev)
+{
+	lpc_common_init(dev);
+}
+
+#if 0
+static void enable_hpet(struct device *dev)
+{
+	unsigned long hpet_address;
+
+	pci_write_config32(dev,0x44, 0xfed00001);
+	hpet_address=pci_read_config32(dev,0x44)& 0xfffffffe;
+	printk_debug("enabling HPET @0x%x\n", hpet_address);
+}
+#endif
+
+static void lpc_init(device_t dev)
+{
+	uint8_t byte;
+	uint8_t byte_old;
+	int on;
+	int nmi_option;
+
+	lpc_common_init(dev);
+
+#if 0
+	/* posted memory write enable */
+	byte = pci_read_config8(dev, 0x46);
+	pci_write_config8(dev, 0x46, byte | (1<<0));
+
+#endif
+	/* power after power fail */
+
+#if 1
+	on = MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
+	get_option(&on, "power_on_after_fail");
+	byte = pci_read_config8(dev, PREVIOUS_POWER_STATE);
+	byte &= ~0x40;
+	if (!on) {
+		byte |= 0x40;
+	}
+	pci_write_config8(dev, PREVIOUS_POWER_STATE, byte);
+	printk_info("set power %s after power fail\n", on?"on":"off");
+#endif
+	/* Throttle the CPU speed down for testing */
+	on = SLOW_CPU_OFF;
+	get_option(&on, "slow_cpu");
+	if(on) {
+		uint16_t pm10_bar;
+		uint32_t dword;
+		pm10_bar = (pci_read_config16(dev, 0x60)&0xff00);
+		outl(((on<<1)+0x10)  ,(pm10_bar + 0x10));
+		dword = inl(pm10_bar + 0x10);
+		on = 8-on;
+		printk_debug("Throttling CPU %2d.%1.1d percent.\n",
+				(on*12)+(on>>1),(on&1)*5);
+	}
+
+#if 0
+// default is enabled
+	/* Enable Port 92 fast reset */
+	byte = pci_read_config8(dev, 0xe8);
+	byte |= ~(1 << 3);
+	pci_write_config8(dev, 0xe8, byte);
+#endif
+
+	/* Enable Error reporting */
+	/* Set up sync flood detected */
+	byte = pci_read_config8(dev, 0x47);
+	byte |= (1 << 1);
+	pci_write_config8(dev, 0x47, byte);
+
+	/* Set up NMI on errors */
+	byte = inb(0x70); // RTC70
+	byte_old = byte;
+	nmi_option = NMI_OFF;
+	get_option(&nmi_option, "nmi");
+	if (nmi_option) {
+		byte &= ~(1 << 7); /* set NMI */
+	} else {
+		byte |= ( 1 << 7); // Can not mask NMI from PCI-E and NMI_NOW
+	}
+	if( byte != byte_old) {
+		outb(0x70, byte);
+	}
+
+	/* Initialize the real time clock */
+	rtc_init(0);
+
+	/* Initialize isa dma */
+	isa_dma_init();
+
+	/* Initialize the High Precision Event Timers */
+//	enable_hpet(dev);
+
+}
+
+static void mcp55_lpc_read_resources(device_t dev)
+{
+	struct resource *res;
+	unsigned long index;
+
+	/* Get the normal pci resources of this device */
+	pci_dev_read_resources(dev); // We got one for APIC, or one more for TRAP
+
+	/* Add an extra subtractive resource for both memory and I/O */
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
+	res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
+
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
+	res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
+
+}
+
+/**
+ * @brief Enable resources for children devices
+ *
+ * @param dev the device whos children's resources are to be enabled
+ *
+ * This function is call by the global enable_resources() indirectly via the
+ * device_operation::enable_resources() method of devices.
+ *
+ * Indirect mutual recursion:
+ *      enable_childrens_resources() -> enable_resources()
+ *      enable_resources() -> device_operation::enable_resources()
+ *      device_operation::enable_resources() -> enable_children_resources()
+ */
+static void mcp55_lpc_enable_childrens_resources(device_t dev)
+{
+	unsigned link;
+	uint32_t reg, reg_var[4];
+	int i;
+	int var_num = 0;
+
+	reg = pci_read_config32(dev, 0xa0);
+
+	for (link = 0; link < dev->links; link++) {
+		device_t child;
+		for (child = dev->link[link].children; child; child = child->sibling) {
+			enable_resources(child);
+			if(child->have_resources && (child->path.type == DEVICE_PATH_PNP)) {
+				for(i=0;i<child->resources;i++) {
+					struct resource *res;
+					unsigned long base, end; // don't need long long
+					res = &child->resource[i];
+					if(!(res->flags & IORESOURCE_IO)) continue;
+					base = res->base;
+					end = resource_end(res);
+					printk_debug("mcp55 lpc decode:%s, base=0x%08x, end=0x%08x\n",dev_path(child),base, end);
+					switch(base) {
+					case 0x3f8: // COM1
+						reg |= (1<<0);	break;
+					case 0x2f8: // COM2
+						reg |= (1<<1);  break;
+					case 0x378: // Parallal 1
+						reg |= (1<<24); break;
+					case 0x3f0: // FD0
+						reg |= (1<<20); break;
+					case 0x220:  // Aduio 0
+						reg |= (1<<8);	break;
+					case 0x300:  // Midi 0
+						reg |= (1<<12);	break;
+					}
+					if( (base == 0x290) || (base >= 0x400)) {
+						if(var_num>=4) continue; // only 4 var ; compact them ?
+						reg |= (1<<(28+var_num));
+						reg_var[var_num++] = (base & 0xffff)|((end & 0xffff)<<16);
+					}
+				}
+			}
+		}
+	}
+	pci_write_config32(dev, 0xa0, reg);
+	for(i=0;i<var_num;i++) {
+		pci_write_config32(dev, 0xa8 + i*4, reg_var[i]);
+	}
+
+
+}
+
+static void mcp55_lpc_enable_resources(device_t dev)
+{
+	pci_dev_enable_resources(dev);
+	mcp55_lpc_enable_childrens_resources(dev);
+}
+
+static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+{
+	pci_write_config32(dev, 0x40,
+		((device & 0xffff) << 16) | (vendor & 0xffff));
+}
+
+static struct pci_operations lops_pci = {
+	.set_subsystem	= lpci_set_subsystem,
+};
+
+static struct device_operations lpc_ops  = {
+	.read_resources	= mcp55_lpc_read_resources,
+	.set_resources	= pci_dev_set_resources,
+	.enable_resources	= mcp55_lpc_enable_resources,
+	.init		= lpc_init,
+	.scan_bus	= scan_static_bus,
+//	.enable		= mcp55_enable,
+	.ops_pci	= &lops_pci,
+};
+static struct pci_driver lpc_driver __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_LPC,
+};
+
+static struct pci_driver lpc_driver_pro __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_PRO,
+};
+
+static struct pci_driver lpc_driver_lpc2 __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_LPC_2,
+};
+static struct pci_driver lpc_driver_lpc3 __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_LPC_3,
+};
+static struct pci_driver lpc_driver_lpc4 __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_LPC_4,
+};
+static struct pci_driver lpc_driver_lpc5 __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_LPC_5,
+};
+static struct pci_driver lpc_driver_lpc6 __pci_driver = {
+	.ops	= &lpc_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_LPC_6,
+};
+
+static struct device_operations lpc_slave_ops  = {
+	.read_resources	= mcp55_lpc_read_resources,
+	.set_resources	= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init		= lpc_slave_init,
+//	.enable		= mcp55_enable,
+	.ops_pci	= &lops_pci,
+};
+
+static struct pci_driver lpc_driver_slave __pci_driver = {
+	.ops	= &lpc_slave_ops,
+	.vendor	= PCI_VENDOR_ID_NVIDIA,
+	.device	= PCI_DEVICE_ID_NVIDIA_MCP55_SLAVE,
+};