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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include "chip.h"
#include "i82801gx.h"
typedef struct southbridge_intel_i82801gx_config config_t;
static void ide_init(struct device *dev)
{
u16 ideTimingConfig;
u32 reg32;
u32 enable_primary, enable_secondary;
/* Get the chip configuration */
config_t *config = dev->chip_info;
printk(BIOS_DEBUG, "i82801gx_ide: initializing...");
if (config == NULL) {
printk(BIOS_ERR, "\ni82801gx_ide: Not mentioned in devicetree.cb!\n");
// Trying to set somewhat safe defaults instead of bailing out.
enable_primary = enable_secondary = 1;
} else {
enable_primary = config->ide_enable_primary;
enable_secondary = config->ide_enable_secondary;
}
reg32 = pci_read_config32(dev, PCI_COMMAND);
pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_IO | PCI_COMMAND_MASTER);
/* Native Capable, but not enabled. */
pci_write_config8(dev, 0x09, 0x8a);
ideTimingConfig = pci_read_config16(dev, IDE_TIM_PRI);
ideTimingConfig &= ~IDE_DECODE_ENABLE;
ideTimingConfig |= IDE_SITRE;
if (enable_primary) {
/* Enable primary IDE interface. */
ideTimingConfig |= IDE_DECODE_ENABLE;
ideTimingConfig |= (2 << 12); // ISP = 3 clocks
ideTimingConfig |= (3 << 8); // RCT = 1 clock
ideTimingConfig |= (1 << 1); // IE0
ideTimingConfig |= (1 << 0); // TIME0
printk(BIOS_DEBUG, " IDE0");
}
pci_write_config16(dev, IDE_TIM_PRI, ideTimingConfig);
ideTimingConfig = pci_read_config16(dev, IDE_TIM_SEC);
ideTimingConfig &= ~IDE_DECODE_ENABLE;
ideTimingConfig |= IDE_SITRE;
if (enable_secondary) {
/* Enable secondary IDE interface. */
ideTimingConfig |= IDE_DECODE_ENABLE;
ideTimingConfig |= (2 << 12); // ISP = 3 clocks
ideTimingConfig |= (3 << 8); // RCT = 1 clock
ideTimingConfig |= (1 << 1); // IE0
ideTimingConfig |= (1 << 0); // TIME0
printk(BIOS_DEBUG, " IDE1");
}
pci_write_config16(dev, IDE_TIM_SEC, ideTimingConfig);
/* Set IDE I/O Configuration */
reg32 = 0;
/* FIXME: only set FAST_* for ata/100, only ?CBx for ata/66 */
if (enable_primary)
reg32 |= SIG_MODE_PRI_NORMAL | FAST_PCB0 | PCB0 | FAST_PCB1 | PCB1;
if (enable_secondary)
reg32 |= SIG_MODE_SEC_NORMAL | FAST_SCB0 | SCB0 | FAST_SCB1 | SCB1;
pci_write_config32(dev, IDE_CONFIG, reg32);
/* Set Interrupt Line */
/* Interrupt Pin is set by D31IP.PIP */
pci_write_config32(dev, INTR_LN, 0xff); /* Int 15 */
printk(BIOS_DEBUG, "\n");
}
static struct pci_operations ide_pci_ops = {
.set_subsystem = pci_dev_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,
.enable = i82801gx_enable,
.ops_pci = &ide_pci_ops,
};
/* 82801GB/GR/GDH/GBM/GHM/GU (ICH7/ICH7R/ICH7DH/ICH7-M/ICH7-M DH/ICH7-U) */
static const struct pci_driver i82801gx_ide __pci_driver = {
.ops = &ide_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = 0x27df,
};
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