1/*
2 *  Copyright (C) NEC Electronics Corporation 2004-2006
3 *
4 *  This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
5 *
6 *	Copyright 2001 MontaVista Software Inc.
7 *
8 *  This program is free software; you can redistribute it and/or modify
9 *  it under the terms of the GNU General Public License as published by
10 *  the Free Software Foundation; either version 2 of the License, or
11 *  (at your option) any later version.
12 *
13 *  This program is distributed in the hope that it will be useful,
14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *  GNU General Public License for more details.
17 *
18 *  You should have received a copy of the GNU General Public License
19 *  along with this program; if not, write to the Free Software
20 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21 */
22
23#include <linux/kernel.h>
24#include <linux/init.h>
25#include <linux/types.h>
26#include <linux/pci.h>
27
28#include <asm/bootinfo.h>
29
30#include <asm/emma/emma2rh.h>
31
32#define EMMA2RH_PCI_HOST_SLOT 0x09
33#define EMMA2RH_USB_SLOT 0x03
34#define PCI_DEVICE_ID_NEC_EMMA2RH      0x014b /* EMMA2RH PCI Host */
35
36/*
37 * we fix up irqs based on the slot number.
38 * The first entry is at AD:11.
39 * Fortunately this works because, although we have two pci buses,
40 * they all have different slot numbers (except for rockhopper slot 20
41 * which is handled below).
42 *
43 */
44
45#define	MAX_SLOT_NUM 10
46static unsigned char irq_map[][5] __initdata = {
47	[3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC,
48	       MARKEINS_PCI_IRQ_INTD, 0,},
49	[4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,},
50	[5] = {0, 0, 0, 0, 0,},
51	[6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD,
52	       MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,},
53};
54
55static void __devinit nec_usb_controller_fixup(struct pci_dev *dev)
56{
57	if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
58		/* on board USB controller configuration */
59		pci_write_config_dword(dev, 0xe4, 1 << 5);
60}
61
62DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
63			nec_usb_controller_fixup);
64
65/*
66 * Prevent the PCI layer from seeing the resources allocated to this device
67 * if it is the host bridge by marking it as such.  These resources are of
68 * no consequence to the PCI layer (they are handled elsewhere).
69 */
70static void __devinit emma2rh_pci_host_fixup(struct pci_dev *dev)
71{
72	int i;
73
74	if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
75		dev->class &= 0xff;
76		dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
77		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
78			dev->resource[i].start = 0;
79			dev->resource[i].end = 0;
80			dev->resource[i].flags = 0;
81		}
82	}
83}
84
85DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
86			 emma2rh_pci_host_fixup);
87
88int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
89{
90	return irq_map[slot][pin];
91}
92
93/* Do platform specific device initialization at pci_enable_device() time */
94int pcibios_plat_dev_init(struct pci_dev *dev)
95{
96	return 0;
97}
98