2 * arch/mips/pci/fixup-emma2rh.c
3 * This file defines the PCI configration.
5 * Copyright (C) NEC Electronics Corporation 2004-2006
7 * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
9 * Copyright 2001 MontaVista Software Inc.
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.
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.
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
26 #include <linux/kernel.h>
27 #include <linux/init.h>
28 #include <linux/types.h>
29 #include <linux/pci.h>
31 #include <asm/bootinfo.h>
32 #include <asm/debug.h>
34 #include <asm/emma2rh/emma2rh.h>
36 #define EMMA2RH_PCI_HOST_SLOT 0x09
37 #define EMMA2RH_USB_SLOT 0x03
38 #define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */
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).
49 #define MAX_SLOT_NUM 10
50 static 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,},
59 static void __devinit nec_usb_controller_fixup(struct pci_dev *dev)
61 if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT)
62 /* on board USB controller configuration */
63 pci_write_config_dword(dev, 0xe4, 1 << 5);
66 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
67 nec_usb_controller_fixup);
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).
74 static void __devinit emma2rh_pci_host_fixup(struct pci_dev *dev)
78 if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) {
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;
89 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH,
90 emma2rh_pci_host_fixup);
92 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
94 return irq_map[slot][pin];
97 /* Do platform specific device initialization at pci_enable_device() time */
98 int pcibios_plat_dev_init(struct pci_dev *dev)