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1da177e4 LT |
1 | /* |
2 | * | |
3 | * BRIEF MODULE DESCRIPTION | |
4 | * Board specific pci fixups. | |
5 | * | |
6 | * Copyright 2001 MontaVista Software Inc. | |
7 | * Author: MontaVista Software, Inc. | |
8 | * ppopov@mvista.com or source@mvista.com | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
16 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
17 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
18 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
21 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
22 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License along | |
27 | * with this program; if not, write to the Free Software Foundation, Inc., | |
28 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | */ | |
30 | #include <linux/types.h> | |
31 | #include <linux/pci.h> | |
1da177e4 LT |
32 | #include <linux/init.h> |
33 | ||
34 | #include <asm/jmr3927/jmr3927.h> | |
35 | ||
19df0d11 | 36 | int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
1da177e4 LT |
37 | { |
38 | unsigned char irq = pin; | |
39 | ||
69f28276 AN |
40 | /* SMSC SLC90E66 IDE uses irq 14, 15 (default) */ |
41 | if (dev->vendor == PCI_VENDOR_ID_EFAR && | |
42 | dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1) | |
43 | return irq; | |
1da177e4 LT |
44 | /* IRQ rotation (PICMG) */ |
45 | irq--; /* 0-3 */ | |
46 | if (dev->bus->parent == NULL && | |
47 | slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) { | |
48 | /* PCI CardSlot (IDSEL=A23, DevNu=12) */ | |
49 | /* PCIA => PCIC (IDSEL=A23) */ | |
50 | /* NOTE: JMR3927 JP1 must be set to OPEN */ | |
51 | irq = (irq + 2) % 4; | |
52 | } else if (dev->bus->parent == NULL && | |
53 | slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) { | |
54 | /* PCI CardSlot (IDSEL=A22, DevNu=11) */ | |
55 | /* PCIA => PCIA (IDSEL=A22) */ | |
56 | /* NOTE: JMR3927 JP1 must be set to OPEN */ | |
57 | irq = (irq + 0) % 4; | |
58 | } else { | |
59 | /* PCI Backplane */ | |
60 | irq = (irq + 3 + slot) % 4; | |
61 | } | |
62 | irq++; /* 1-4 */ | |
63 | ||
64 | switch (irq) { | |
65 | case 1: | |
66 | irq = JMR3927_IRQ_IOC_PCIA; | |
67 | break; | |
68 | case 2: | |
69 | // wrong for backplane irq = JMR3927_IRQ_IOC_PCIB; | |
70 | irq = JMR3927_IRQ_IOC_PCID; | |
71 | break; | |
72 | case 3: | |
73 | irq = JMR3927_IRQ_IOC_PCIC; | |
74 | break; | |
75 | case 4: | |
76 | // wrong for backplane irq = JMR3927_IRQ_IOC_PCID; | |
77 | irq = JMR3927_IRQ_IOC_PCIB; | |
78 | break; | |
79 | } | |
80 | ||
81 | /* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */ | |
82 | if (dev->bus->parent == NULL && | |
2127435e AN |
83 | slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) |
84 | irq = JMR3927_IRQ_ETHER0; | |
1da177e4 LT |
85 | return irq; |
86 | } | |
87 | ||
88 | /* Do platform specific device initialization at pci_enable_device() time */ | |
89 | int pcibios_plat_dev_init(struct pci_dev *dev) | |
90 | { | |
91 | return 0; | |
92 | } |