| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2010 Advanced Micro Devices, Inc. |
| * |
| * 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 <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <soc/southbridge.h> |
| |
| |
| static void sata_init(struct device *dev) |
| { |
| /************************************** |
| * Configure the SATA port multiplier * |
| **************************************/ |
| #define BYTE_TO_DWORD_OFFSET(x) (x/4) |
| #define AHCI_BASE_ADDRESS_REG 0x24 |
| #define MISC_CONTROL_REG 0x40 |
| #define UNLOCK_BIT (1<<0) |
| #define SATA_CAPABILITIES_REG 0xfc |
| #define CFG_CAP_SPM (1<<12) |
| |
| u32 *ahci_ptr = (void *)(uintptr_t)ALIGN_DOWN( |
| pci_read_config32(dev, AHCI_BASE_ADDRESS_REG), 256); |
| u32 temp; |
| |
| /* unlock the write-protect */ |
| temp = pci_read_config32(dev, MISC_CONTROL_REG); |
| temp |= UNLOCK_BIT; |
| pci_write_config32(dev, MISC_CONTROL_REG, temp); |
| |
| /* set the SATA AHCI mode to allow port expanders */ |
| *(ahci_ptr + BYTE_TO_DWORD_OFFSET(SATA_CAPABILITIES_REG)) |
| |= CFG_CAP_SPM; |
| |
| /* lock the write-protect */ |
| temp = pci_read_config32(dev, MISC_CONTROL_REG); |
| temp &= ~UNLOCK_BIT; |
| pci_write_config32(dev, MISC_CONTROL_REG, temp); |
| }; |
| |
| static struct pci_operations lops_pci = { |
| /* .set_subsystem = pci_dev_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, |
| .ops_pci = &lops_pci, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| PCI_DEVICE_ID_AMD_CZ_SATA, |
| PCI_DEVICE_ID_AMD_CZ_SATA_AHCI, |
| 0 |
| }; |
| |
| static const struct pci_driver sata0_driver __pci_driver = { |
| .ops = &sata_ops, |
| .vendor = PCI_VENDOR_ID_AMD, |
| .devices = pci_device_ids, |
| }; |