projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| a7918f39 AZ |
1 | /* |
| 2 | * arch/arm/mach-ixp4xx/nslu2-pci.c | |
| 3 | * | |
| 4 | * NSLU2 board-level PCI initialization | |
| 5 | * | |
| 6 | * based on ixdp425-pci.c: | |
| 7 | * Copyright (C) 2002 Intel Corporation. | |
| 8 | * Copyright (C) 2003-2004 MontaVista Software, Inc. | |
| 9 | * | |
| 10 | * Maintainer: http://www.nslu2-linux.org/ | |
| 11 | * | |
| 12 | * This program is free software; you can redistribute it and/or modify | |
| 13 | * it under the terms of the GNU General Public License version 2 as | |
| 14 | * published by the Free Software Foundation. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| a7918f39 AZ |
18 | #include <linux/pci.h> |
| 19 | #include <linux/init.h> | |
| 20 | ||
| 21 | #include <asm/mach/pci.h> | |
| 22 | #include <asm/mach-types.h> | |
| 23 | ||
| 24 | void __init nslu2_pci_preinit(void) | |
| 25 | { | |
| 26 | set_irq_type(IRQ_NSLU2_PCI_INTA, IRQT_LOW); | |
| 27 | set_irq_type(IRQ_NSLU2_PCI_INTB, IRQT_LOW); | |
| 28 | set_irq_type(IRQ_NSLU2_PCI_INTC, IRQT_LOW); | |
| 29 | ||
| a7918f39 AZ |
30 | ixp4xx_pci_preinit(); |
| 31 | } | |
| 32 | ||
| 33 | static int __init nslu2_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
| 34 | { | |
| 35 | static int pci_irq_table[NSLU2_PCI_IRQ_LINES] = { | |
| 36 | IRQ_NSLU2_PCI_INTA, | |
| 37 | IRQ_NSLU2_PCI_INTB, | |
| 38 | IRQ_NSLU2_PCI_INTC, | |
| 39 | }; | |
| 40 | ||
| 41 | int irq = -1; | |
| 42 | ||
| 43 | if (slot >= 1 && slot <= NSLU2_PCI_MAX_DEV && | |
| 44 | pin >= 1 && pin <= NSLU2_PCI_IRQ_LINES) { | |
| 45 | irq = pci_irq_table[(slot + pin - 2) % NSLU2_PCI_IRQ_LINES]; | |
| 46 | } | |
| 47 | ||
| 48 | return irq; | |
| 49 | } | |
| 50 | ||
| 51 | struct hw_pci __initdata nslu2_pci = { | |
| 52 | .nr_controllers = 1, | |
| 53 | .preinit = nslu2_pci_preinit, | |
| 54 | .swizzle = pci_std_swizzle, | |
| 55 | .setup = ixp4xx_setup, | |
| 56 | .scan = ixp4xx_scan_bus, | |
| 57 | .map_irq = nslu2_map_irq, | |
| 58 | }; | |
| 59 | ||
| 60 | int __init nslu2_pci_init(void) /* monkey see, monkey do */ | |
| 61 | { | |
| 62 | if (machine_is_nslu2()) | |
| 63 | pci_common_init(&nslu2_pci); | |
| 64 | ||
| 65 | return 0; | |
| 66 | } | |
| 67 | ||
| 68 | subsys_initcall(nslu2_pci_init); |