Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * BRIEF MODULE DESCRIPTION |
| 4 | * Board specific pci fixups for the Toshiba rbtx4927 |
| 5 | * |
| 6 | * Copyright 2001 MontaVista Software Inc. |
| 7 | * Author: MontaVista Software, Inc. |
| 8 | * ppopov@mvista.com or source@mvista.com |
| 9 | * |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 10 | * Copyright (C) 2000-2001 Toshiba Corporation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | * Copyright (C) 2004 MontaVista Software Inc. |
| 13 | * Author: Manish Lachwani (mlachwani@mvista.com) |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify it |
| 16 | * under the terms of the GNU General Public License as published by the |
| 17 | * Free Software Foundation; either version 2 of the License, or (at your |
| 18 | * option) any later version. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 21 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 22 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 23 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 25 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 26 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 27 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 29 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | * |
| 31 | * You should have received a copy of the GNU General Public License along |
| 32 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 33 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 34 | */ |
| 35 | #include <linux/types.h> |
Atsushi Nemoto | 89d63fe | 2008-07-11 00:33:08 +0900 | [diff] [blame] | 36 | #include <asm/txx9/pci.h> |
| 37 | #include <asm/txx9/rbtx4927.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Atsushi Nemoto | edcaf1a | 2008-07-11 23:27:54 +0900 | [diff] [blame^] | 39 | int __init rbtx4927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | { |
Atsushi Nemoto | 89d63fe | 2008-07-11 00:33:08 +0900 | [diff] [blame] | 41 | unsigned char irq = pin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Atsushi Nemoto | 89d63fe | 2008-07-11 00:33:08 +0900 | [diff] [blame] | 43 | /* IRQ rotation */ |
| 44 | irq--; /* 0-3 */ |
| 45 | if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) { |
| 46 | /* PCI CardSlot (IDSEL=A23) */ |
| 47 | /* PCIA => PCIA */ |
| 48 | irq = (irq + 0 + slot) % 4; |
| 49 | } else { |
| 50 | /* PCI Backplane */ |
| 51 | if (txx9_pci_option & TXX9_PCI_OPT_PICMG) |
| 52 | irq = (irq + 33 - slot) % 4; |
| 53 | else |
| 54 | irq = (irq + 3 + slot) % 4; |
| 55 | } |
| 56 | irq++; /* 1-4 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Atsushi Nemoto | 89d63fe | 2008-07-11 00:33:08 +0900 | [diff] [blame] | 58 | switch (irq) { |
| 59 | case 1: |
| 60 | irq = RBTX4927_IRQ_IOC_PCIA; |
| 61 | break; |
| 62 | case 2: |
| 63 | irq = RBTX4927_IRQ_IOC_PCIB; |
| 64 | break; |
| 65 | case 3: |
| 66 | irq = RBTX4927_IRQ_IOC_PCIC; |
| 67 | break; |
| 68 | case 4: |
| 69 | irq = RBTX4927_IRQ_IOC_PCID; |
| 70 | break; |
| 71 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | return irq; |
| 73 | } |