src/southbridge/amd/sb600/ide.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2008 Advanced Micro Devices, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <console/console.h>
  17 #include <device/device.h>
  18 #include <device/pci.h>
  19 #include <device/pci_ids.h>
  20 #include <device/pci_ops.h>
  21 #include "sb600.h"
  22
  23 static void ide_init(struct device *dev)
  24 {
  25         /* Enable ide devices so the linux ide driver will work */
  26         u32 dword;
  27         u8 byte;
  28
  29         /* RPR10.1 disable MSI */
  30         dword = pci_read_config32(dev, 0x70);
  31         dword &= ~(1 << 16);
  32         pci_write_config32(dev, 0x70, dword);
  33
  34         /* Enable UDMA on all devices, it will become UDMA0 (default PIO is PIO0) */
  35         byte = pci_read_config8(dev, 0x54);
  36         byte |= 0xf;
  37         pci_write_config8(dev, 0x54, byte);
  38
  39         /* Enable I/O Access&& Bus Master */
  40         dword = pci_read_config16(dev, 0x4);
  41         dword |= 1 << 2;
  42         pci_write_config16(dev, 0x4, dword);
  43 }
  44
  45 static struct pci_operations lops_pci = {
  46         .set_subsystem = pci_dev_set_subsystem,
  47 };
  48
  49 static struct device_operations ide_ops = {
  50         .read_resources = pci_dev_read_resources,
  51         .set_resources = pci_dev_set_resources,
  52         .enable_resources = pci_dev_enable_resources,
  53         .init = ide_init,
  54         .scan_bus = 0,
  55         /* .enable           = sb600_enable, */
  56         .ops_pci = &lops_pci,
  57 };
  58
  59 static const struct pci_driver ide_driver __pci_driver = {
  60         .ops = &ide_ops,
  61         .vendor = PCI_VENDOR_ID_ATI,
  62         .device = PCI_DEVICE_ID_ATI_SB600_IDE,
  63 };