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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2010 Keith Hui <buurin@gmail.com>
* Copyright (C) 2010 Idwer Vollering <vidwer@gmail.com>
* Copyright (C) 2010 Tobias Diedrich <ranma+coreboot@gmail.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; 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 <arch/io.h>
#include <console/console.h>
#include <stdint.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/smbus.h>
#include "i82371eb.h"
#include "smbus.h"
static void pwrmgt_enable(struct device *dev)
{
struct southbridge_intel_i82371eb_config *sb = dev->chip_info;
u32 reg, gpo = sb->gpo;
/* Sets the base address of power management ports. */
pci_write_config16(dev, PMBA, DEFAULT_PMBASE | 1);
/* Set Power Management IO Space Enable bit */
u8 val = pci_read_config8(dev, PMREGMISC);
pci_write_config8(dev, PMREGMISC, val | 1);
/* set global control:
* bit25 (lid_pol): 1=invert lid polarity
* bit24 (sm_freeze): 1=freeze idle and standby timers
* bit16 (end of smi): 0=disable smi assertion (cleared by hw)
* bits8-15,26: global standby timer inital count 127 * 4minutes
* bit2 (thrm_pol): 1=active low THRM#
* bit0 (smi_en): 1=disable smi generation upon smi event
*/
reg = (sb->lid_polarity<<25)|
(1<<24)|
(0xff<<8)|
(sb->thrm_polarity<<2);
outl(reg, DEFAULT_PMBASE + GLBCTL);
/* set processor control:
* bit12 (stpclk_en): 1=enable stopping of host clk on lvl3
* bit11 (sleep_en): 1=enable slp# assertion on lvl3
* bit9 (cc_en): 1=enable clk control with lvl2 and lvl3 regs
*/
outl(0, DEFAULT_PMBASE + PCNTRL);
/* disable smi event enables */
outw(0, DEFAULT_PMBASE + GLBEN);
outl(0, DEFAULT_PMBASE + DEVCTL);
/* set default gpo value.
* power-on default is 0x7fffbfffh */
if (gpo) {
/* only 8bit access allowed */
outb( gpo & 0xff, DEFAULT_PMBASE + GPO0);
outb((gpo >> 8) & 0xff, DEFAULT_PMBASE + GPO1);
outb((gpo >> 16) & 0xff, DEFAULT_PMBASE + GPO2);
outb((gpo >> 24) & 0xff, DEFAULT_PMBASE + GPO3);
} else {
printk(BIOS_SPEW,
"%s: gpo default missing in devicetree.cb!\n", __func__);
}
/* Clear status events. */
outw(0xffff, DEFAULT_PMBASE + PMSTS);
outw(0xffff, DEFAULT_PMBASE + GPSTS);
outw(0xffff, DEFAULT_PMBASE + GLBSTS);
outl(0xffffffff, DEFAULT_PMBASE + DEVSTS);
/* set PMCNTRL default */
outw(SUS_TYP_S0|SCI_EN, DEFAULT_PMBASE + PMCNTRL);
}
static void pwrmgt_read_resources(struct device *dev)
{
struct resource *res;
pci_dev_read_resources(dev);
res = new_resource(dev, 1);
res->base = DEFAULT_PMBASE;
res->size = 0x0040;
res->limit = 0xffff;
res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED |
IORESOURCE_RESERVE;
res = new_resource(dev, 2);
res->base = SMBUS_IO_BASE;
res->size = 0x0010;
res->limit = 0xffff;
res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED |
IORESOURCE_RESERVE;
}
static const struct smbus_bus_operations lops_smbus_bus = {
};
static const struct device_operations smbus_ops = {
.read_resources = pwrmgt_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = 0,
.scan_bus = scan_smbus,
.enable = pwrmgt_enable,
.ops_pci = 0, /* No subsystem IDs on 82371EB! */
.ops_smbus_bus = &lops_smbus_bus,
};
/* Note: There's no SMBus on 82371FB/SB/MX and 82437MX. */
/* Intel 82371AB/EB/MB */
static const struct pci_driver smbus_driver __pci_driver = {
.ops = &smbus_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_82371AB_SMB_ACPI,
};
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