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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2009-2010 iWave Systems
*
* 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
/* PCI Configuration Space (D31:F1): IDE */
#define INTR_LN 0x3c
#define IDE_TIM_PRI 0x80 /* IDE timings, primary */
extern int sch_port_access_read(int port, int reg, int bytes);
static void ide_init(struct device *dev)
{
u32 ideTimingConfig, reg32;
printk(BIOS_DEBUG, "sch_ide: initializing... ");
reg32 = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND,
reg32 | PCI_COMMAND_IO | PCI_COMMAND_MASTER);
/* Program the clock. */
if (sch_port_access_read(5, 3, 4) & (1 << 3)) {
/* 533MHz, Read PCI MC register */
reg32 = pci_read_config32(dev, 0x60);
pci_write_config32(dev, 0x60, reg32 | 1);
} else {
/* 400MHz */
reg32 = pci_read_config32(dev, 0x60);
reg32 &= ~1;
pci_write_config32(dev, 0x60, reg32);
}
/* Enable primary IDE interface. 80=04 81=00 82=02 83=80 */
ideTimingConfig = 0x80020000;
printk(BIOS_DEBUG, "IDE0 ");
pci_write_config32(dev, IDE_TIM_PRI, ideTimingConfig);
/* Set Interrupt Line. */
/* Interrupt Pin is set by D31IP.PIP */
printk(BIOS_DEBUG, "\n");
}
static void ide_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
if (!vendor || !device) {
pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
pci_read_config32(dev, PCI_VENDOR_ID));
} else {
pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
}
static struct pci_operations ide_pci_ops = {
.set_subsystem = ide_set_subsystem,
};
static struct device_operations ide_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = ide_init,
.scan_bus = 0,
.ops_pci = &ide_pci_ops,
};
static const struct pci_driver sch_ide __pci_driver = {
.ops = &ide_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x811A,
};
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