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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
*
* 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>
#include "i82801gx.h"
typedef struct southbridge_intel_i82801gx_config config_t;
static void sata_init(struct device *dev)
{
u32 reg32;
u16 reg16;
u32 *ahci_bar;
/* Get the chip configuration */
config_t *config = dev->chip_info;
printk(BIOS_DEBUG, "i82801gx_sata: initializing...\n");
if (config == NULL) {
printk(BIOS_ERR, "i82801gx_sata: error: device not in devicetree.cb!\n");
return;
}
/* SATA configuration */
/* Enable BARs */
pci_write_config16(dev, PCI_COMMAND, 0x0007);
if (config->ide_legacy_combined) {
printk(BIOS_DEBUG, "SATA controller in combined mode.\n");
/* No AHCI: clear AHCI base */
pci_write_config32(dev, 0x24, 0x00000000);
/* And without AHCI BAR no memory decoding */
reg16 = pci_read_config16(dev, PCI_COMMAND);
reg16 &= ~PCI_COMMAND_MEMORY;
pci_write_config16(dev, PCI_COMMAND, reg16);
pci_write_config8(dev, 0x09, 0x80);
/* Set timings */
pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
/* Sync DMA */
pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
pci_write_config16(dev, IDE_SDMA_TIM, 0x0200);
/* Set IDE I/O Configuration */
reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0;
pci_write_config32(dev, IDE_CONFIG, reg32);
/* Combine IDE - SATA configuration */
pci_write_config8(dev, 0x90, 0x02);
/* Port 0 & 1 enable */
pci_write_config8(dev, 0x92, 0x0f);
/* SATA Initialization register */
pci_write_config32(dev, 0x94, 0x5a000180);
} else if(config->sata_ahci) {
printk(BIOS_DEBUG, "SATA controller in AHCI mode.\n");
/* Allow both Legacy and Native mode */
pci_write_config8(dev, 0x09, 0x8f);
/* Set Interrupt Line */
/* Interrupt Pin is set by D31IP.PIP */
pci_write_config8(dev, INTR_LN, 0x0a);
/* Set timings */
pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
/* Sync DMA */
pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
pci_write_config16(dev, IDE_SDMA_TIM, 0x0001);
/* Set IDE I/O Configuration */
reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0;
pci_write_config32(dev, IDE_CONFIG, reg32);
/* Set Sata Controller Mode. */
pci_write_config8(dev, 0x90, 0x40); // 40=AHCI
/* In ACHI mode, bit[3:0] must always be set
* (Port status is controlled through AHCI BAR)
*/
pci_write_config8(dev, 0x92, 0x0f);
ahci_bar = (u32 *)(pci_read_config32(dev, 0x27) & ~0x3ff);
ahci_bar[3] = config->sata_ports_implemented;
/* SATA Initialization register */
pci_write_config32(dev, 0x94, 0x1a000180);
} else {
printk(BIOS_DEBUG, "SATA controller in plain mode.\n");
/* Set Sata Controller Mode. No Mapping(?) */
pci_write_config8(dev, 0x90, 0x00);
/* No AHCI: clear AHCI base */
pci_write_config32(dev, 0x24, 0x00000000);
/* And without AHCI BAR no memory decoding */
reg16 = pci_read_config16(dev, PCI_COMMAND);
reg16 &= ~PCI_COMMAND_MEMORY;
pci_write_config16(dev, PCI_COMMAND, reg16);
/* Native mode capable on both primary and secondary (0xa)
* or'ed with enabled (0x50) = 0xf
*/
pci_write_config8(dev, 0x09, 0x8f);
/* Set Interrupt Line */
/* Interrupt Pin is set by D31IP.PIP */
pci_write_config8(dev, INTR_LN, 0xff);
/* Set timings */
pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
IDE_SITRE | IDE_ISP_3_CLOCKS |
IDE_RCT_1_CLOCKS | IDE_IE0 | IDE_TIME0);
/* Sync DMA */
pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0);
pci_write_config16(dev, IDE_SDMA_TIM, 0x0201);
/* Set IDE I/O Configuration */
reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0;
pci_write_config32(dev, IDE_CONFIG, reg32);
/* Port 0 & 1 enable XXX */
pci_write_config8(dev, 0x92, 0x15);
/* SATA Initialization register */
pci_write_config32(dev, 0x94, 0x1a000180);
}
/* All configurations need this SATA initialization sequence */
pci_write_config8(dev, 0xa0, 0x40);
pci_write_config8(dev, 0xa6, 0x22);
pci_write_config8(dev, 0xa0, 0x78);
pci_write_config8(dev, 0xa6, 0x22);
pci_write_config8(dev, 0xa0, 0x88);
reg32 = pci_read_config32(dev, 0xa4);
reg32 &= 0xc0c0c0c0;
reg32 |= 0x1b1b1212;
pci_write_config32(dev, 0xa4, reg32);
pci_write_config8(dev, 0xa0, 0x8c);
reg32 = pci_read_config32(dev, 0xa4);
reg32 &= 0xc0c0ff00;
reg32 |= 0x121200aa;
pci_write_config32(dev, 0xa4, reg32);
pci_write_config8(dev, 0xa0, 0x00);
pci_write_config8(dev, PCI_INTERRUPT_LINE, 0);
/* Sata Initialization Register */
reg32 = pci_read_config32(dev, 0x94);
reg32 |= (1 << 30); // due to some bug
pci_write_config32(dev, 0x94, reg32);
}
static void sata_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 sata_pci_ops = {
.set_subsystem = sata_set_subsystem,
};
static struct device_operations sata_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sata_init,
.scan_bus = 0,
.enable = i82801gx_enable,
.ops_pci = &sata_pci_ops,
};
static const unsigned short sata_ids[] = {
0x27c0, /* Desktop Non-AHCI and Non-RAID Mode: 82801GB/GR/GDH (ICH7/ICH7R/ICH7DH) */
0x27c4, /* Mobile Non-AHCI and Non-RAID Mode: 82801GBM/GHM (ICH7-M/ICH7-M DH) */
/* NOTE: Any of the below are not properly supported yet. */
0x27c1, /* Desktop AHCI Mode: 82801GB/GR/GDH (ICH7/ICH7R/ICH7DH) */
0x27c3, /* Desktop RAID mode: 82801GB/GR/GDH (ICH7/ICH7R/ICH7DH) */
0x27c5, /* Mobile AHCI Mode: 82801GBM/GHM (ICH7-M/ICH7-M DH) */
0x27c6, /* ICH7M DH Raid Mode: 82801GHM (ICH7-M DH) */
0
};
static const struct pci_driver i82801gx_sata_driver __pci_driver = {
.ops = &sata_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices= sata_ids,
};
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