1/*
2 *  arch/mips/pci/fixup-emma2rh.c
3 *      This file defines the PCI configration.
4 *
5 *  Copyright (C) NEC Electronics Corporation 2004-2006
6 *
7 *  This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
8 *
9 *	Copyright 2001 MontaVista Software Inc.
10 *
11 *  This program is free software; you can redistribute it and/or modify
12 *  it under the terms of the GNU General Public License as published by
13 *  the Free Software Foundation; either version 2 of the License, or
14 *  (at your option) any later version.
15 *
16 *  This program is distributed in the hope that it will be useful,
17 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
18 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19 *  GNU General Public License for more details.
20 *
21 *  You should have received a copy of the GNU General Public License
22 *  along with this program; if not, write to the Free Software
23 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
24 */
25
26#include <linux/kernel.h>
27#include <linux/init.h>
28#include <linux/types.h>
29#include <linux/pci.h>
30
31#include <asm/bootinfo.h>
32#include <asm/debug.h>
33
34#include <asm/emma2rh/emma2rh.h>
35
36#define EMMA2RH_PCI_HOST_SLOT 0x09
37#define EMMA2RH_USB_SLOT 0x03
38#define PCI_DEVICE_ID_NEC_EMMA2RH      0x014b /* EMMA2RH PCI Host */
39
40/*
41 * we fix up irqs based on the slot number.
42 * The first entry is at AD:11.
43 * Fortunately this works because, although we have two pci buses,
44 * they all have different slot numbers (except for rockhopper slot 20
45 * which is handled below).
46 *
47 */
48
49#define	MAX_SLOT_NUM 10
50static unsigned char irq_map[][5] __initdata = {
51	[3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC,
52	       MARKEINS_PCI_IRQ_INTD, 0,},
53	[4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,},
54	[5] = {0, 0, 0, 0, 0,},
55	[6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD,
56	       MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,},
57};
58
59static void __devinit nec_usb_controller_fixup(struct pci_dev *dev)
60{
61	if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
62		/* on board USB controller configuration */
63		pci_write_config_dword(dev, 0xe4, 1 << 5);
64}
65
66DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
67			nec_usb_controller_fixup);
68
69/*
70 * Prevent the PCI layer from seeing the resources allocated to this device
71 * if it is the host bridge by marking it as such.  These resources are of
72 * no consequence to the PCI layer (they are handled elsewhere).
73 */
74static void __devinit emma2rh_pci_host_fixup(struct pci_dev *dev)
75{
76	int i;
77
78	if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
79		dev->class &= 0xff;
80		dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
81		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
82			dev->resource[i].start = 0;
83			dev->resource[i].end = 0;
84			dev->resource[i].flags = 0;
85		}
86	}
87}
88
89DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
90			 emma2rh_pci_host_fixup);
91
92int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
93{
94	return irq_map[slot][pin];
95}
96
97/* Do platform specific device initialization at pci_enable_device() time */
98int pcibios_plat_dev_init(struct pci_dev *dev)
99{
100	return 0;
101}
102