/******************************************************************************
**
** FILE NAME    : ifxmips_fixup_pcie.c
** PROJECT      : IFX UEIP for VRX200
** MODULES      : PCIe
**
** DATE         : 02 Mar 2009
** AUTHOR       : Lei Chuanhua
** DESCRIPTION  : PCIe Root Complex Driver
** COPYRIGHT    :       Copyright (c) 2009
**                      Infineon Technologies AG
**                      Am Campeon 1-12, 85579 Neubiberg, Germany
**
**    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; either version 2 of the License, or
**    (at your option) any later version.
** HISTORY
** $Version $Date        $Author         $Comment
** 0.0.1    17 Mar,2009  Lei Chuanhua    Initial version
*******************************************************************************/

#include <linux/pci.h>
#include <linux/pci_regs.h>
#include <linux/pci_ids.h>

#include <ifx_types.h>
#include <ifx_regs.h>
#include <common_routines.h>

#include "ifxmips_pcie_reg.h"
#include "ifxmips_pcie.h"

static void ifx_pcie_fixup_resource(struct pci_dev *dev)
{
	u32 reg;
#ifdef IFX_PCIE_DBG
	struct ifx_pcie_controller *ctrl = dev->bus->sysdata;
	int rc_port = ctrl->port;
#endif /* IFX_PCIE_DBG */
	IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s port %d dev %s: enter\n", __func__,
		       rc_port, pci_name(dev));

	IFX_PCIE_PRINT(PCIE_MSG_FIXUP,
		       "%s port %d : fixup host controller %s (%04x:%04x)\n",
		       __func__, rc_port, pci_name(dev), dev->vendor,
		       dev->device);

	/* Setup COMMAND register */
	reg = PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER	/* |
									   PCI_COMMAND_INTX_DISABLE */  | PCI_COMMAND_SERR;
	pci_write_config_word(dev, PCI_COMMAND, reg);
	IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s port %d dev %s: exit\n", __func__,
		       rc_port, pci_name(dev));
}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INFINEON, PCI_DEVICE_ID_INFINEON_PCIE,
			ifx_pcie_fixup_resource);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LANTIQ, PCI_DEVICE_ID_LANTIQ_PCIE,
			ifx_pcie_fixup_resource);

static void ifx_pcie_rc_class_early_fixup(struct pci_dev *dev)
{
	struct ifx_pcie_controller *ctrl = dev->bus->sysdata;
	int rc_port = ctrl->port;

	IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s port %d dev %s: enter\n", __func__,
		       rc_port, pci_name(dev));

	/* G.HN also has wrong class code */
	if (dev->devfn == PCI_DEVFN(0, 0) && (((dev->class >> 8) ==
					       PCI_CLASS_BRIDGE_HOST)
					      || ((dev->class >> 8) ==
						  PCI_CLASS_NETWORK_OTHER))) {

		dev->class = (PCI_CLASS_BRIDGE_PCI << 8) | (dev->class & 0xff);

		printk(KERN_INFO
		       "%s port %d: fixed pcie host bridge to pci-pci bridge\n",
		       __func__, rc_port);
	}
	IFX_PCIE_PRINT(PCIE_MSG_FIXUP, "%s port %d dev %s: exit\n", __func__,
		       rc_port, pci_name(dev));
}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INFINEON, PCI_DEVICE_ID_INFINEON_PCIE,
			ifx_pcie_rc_class_early_fixup);

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LANTIQ, PCI_DEVICE_ID_LANTIQ_PCIE,
			ifx_pcie_rc_class_early_fixup);