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355c471f | 1 | /* |
355c471f | 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 | ||
355c471f | 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> | |
355c471f | 29 | |
d91f2cbe | 30 | #include <asm/emma/emma2rh.h> |
355c471f | 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 | |
46 | static 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 | ||
55 | static 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 | ||
62 | DECLARE_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 | */ | |
70 | static 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 | ||
85 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH, | |
86 | emma2rh_pci_host_fixup); | |
87 | ||
19df0d11 | 88 | int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
355c471f | 89 | { |
90 | return irq_map[slot][pin]; | |
91 | } | |
92 | ||
93 | /* Do platform specific device initialization at pci_enable_device() time */ | |
94 | int pcibios_plat_dev_init(struct pci_dev *dev) | |
95 | { | |
96 | return 0; | |
97 | } |