target/linux/lantiq/files/arch/mips/pci/fixup-lantiq-pcie.c

   1 /******************************************************************************
   2 **
   3 ** FILE NAME    : ifxmips_fixup_pcie.c
   4 ** PROJECT      : IFX UEIP for VRX200
   5 ** MODULES      : PCIe
   6 **
   7 ** DATE         : 02 Mar 2009
   8 ** AUTHOR       : Lei Chuanhua
   9 ** DESCRIPTION  : PCIe Root Complex Driver
  10 ** COPYRIGHT    :       Copyright (c) 2009
  11 **                      Infineon Technologies AG
  12 **                      Am Campeon 1-12, 85579 Neubiberg, Germany
  13 **
  14 **    This program is free software; you can redistribute it and/or modify
  15 **    it under the terms of the GNU General Public License as published by
  16 **    the Free Software Foundation; either version 2 of the License, or
  17 **    (at your option) any later version.
  18 ** HISTORY
  19 ** $Version $Date        $Author         $Comment
  20 ** 0.0.1    17 Mar,2009  Lei Chuanhua    Initial version
  21 *******************************************************************************/
  22 /*!
  23  \file ifxmips_fixup_pcie.c
  24  \ingroup IFX_PCIE
  25  \brief PCIe Fixup functions source file
  26 */
  27 #include <linux/pci.h>
  28 #include <linux/pci_regs.h>
  29 #include <linux/pci_ids.h>
  30
  31 #include <lantiq_soc.h>
  32
  33 #include "pcie-lantiq.h"
  34
  35 #define PCI_VENDOR_ID_INFINEON         0x15D1
  36 #define PCI_DEVICE_ID_INFINEON_DANUBE  0x000F
  37 #define PCI_DEVICE_ID_INFINEON_PCIE    0x0011
  38 #define PCI_VENDOR_ID_LANTIQ        0x1BEF
  39 #define PCI_DEVICE_ID_LANTIQ_PCIE       0x0011
  40
  41
  42
  43 static void __devinit
  44 ifx_pcie_fixup_resource(struct pci_dev *dev)
  45 {
  46     u32 reg;
  47
  48     IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s dev %s: enter\n", __func__, pci_name(dev));
  49
  50     IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s: fixup host controller %s (%04x:%04x)\n",
  51         __func__, pci_name(dev), dev->vendor, dev->device);
  52
  53    /* Setup COMMAND register */
  54     reg = PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER /* |
  55           PCI_COMMAND_INTX_DISABLE */| PCI_COMMAND_SERR;
  56     pci_write_config_word(dev, PCI_COMMAND, reg);
  57     IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s dev %s: exit\n", __func__, pci_name(dev));
  58 }
  59 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INFINEON, PCI_DEVICE_ID_INFINEON_PCIE, ifx_pcie_fixup_resource);
  60 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LANTIQ, PCI_VENDOR_ID_LANTIQ, ifx_pcie_fixup_resource);
  61
  62 static void __devinit
  63 ifx_pcie_rc_class_early_fixup(struct pci_dev *dev)
  64 {
  65     IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s dev %s: enter\n", __func__, pci_name(dev));
  66
  67     if (dev->devfn == PCI_DEVFN(0, 0) &&
  68         (dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) {
  69
  70         dev->class = (PCI_CLASS_BRIDGE_PCI << 8) | (dev->class & 0xff);
  71
  72         printk(KERN_INFO "%s: fixed pcie host bridge to pci-pci bridge\n", __func__);
  73     }
  74     IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s dev %s: exit\n", __func__, pci_name(dev));
  75 }
  76
  77 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INFINEON, PCI_DEVICE_ID_INFINEON_PCIE,
  78      ifx_pcie_rc_class_early_fixup);
  79
  80 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LANTIQ, PCI_DEVICE_ID_LANTIQ_PCIE,
  81      ifx_pcie_rc_class_early_fixup);