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1 | /* |
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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 | |
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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> |
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29 | |
d91f2cbe |
30 | #include <asm/emma/emma2rh.h> |
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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 | |
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45 | #define MAX_SLOT_NUM 10 |
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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 | |
28eb0e46 |
55 | static void nec_usb_controller_fixup(struct pci_dev *dev) |
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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 | */ |
28eb0e46 |
70 | static void emma2rh_pci_host_fixup(struct pci_dev *dev) |
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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) |
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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 | } |