diff options
Diffstat (limited to 'src/southbridge/intel/i82801gx/ide.c')
| -rw-r--r-- | src/southbridge/intel/i82801gx/ide.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801gx/ide.c b/src/southbridge/intel/i82801gx/ide.c new file mode 100644 index 0000000000..6e05e0d9b5 --- /dev/null +++ b/src/southbridge/intel/i82801gx/ide.c @@ -0,0 +1,128 @@ +/* + * 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. + * + * 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/pci_ids.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 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, + .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, +}; |