projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 3145d8a6 RW |
1 | /* |
| 2 | * arch/arm/mach-ixp4xx/nas100d-pci.c | |
| 3 | * | |
| 4 | * NAS 100d 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 | ||
| 3145d8a6 RW |
18 | #include <linux/pci.h> |
| 19 | #include <linux/init.h> | |
| 698dfe2b | 20 | #include <linux/irq.h> |
| 3145d8a6 RW |
21 | |
| 22 | #include <asm/mach/pci.h> | |
| 23 | #include <asm/mach-types.h> | |
| 24 | ||
| 25 | void __init nas100d_pci_preinit(void) | |
| 26 | { | |
| 27 | set_irq_type(IRQ_NAS100D_PCI_INTA, IRQT_LOW); | |
| 28 | set_irq_type(IRQ_NAS100D_PCI_INTB, IRQT_LOW); | |
| 29 | set_irq_type(IRQ_NAS100D_PCI_INTC, IRQT_LOW); | |
| 30 | set_irq_type(IRQ_NAS100D_PCI_INTD, IRQT_LOW); | |
| 31 | set_irq_type(IRQ_NAS100D_PCI_INTE, IRQT_LOW); | |
| 32 | ||
| 3145d8a6 RW |
33 | ixp4xx_pci_preinit(); |
| 34 | } | |
| 35 | ||
| 36 | static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
| 37 | { | |
| 38 | static int pci_irq_table[NAS100D_PCI_MAX_DEV][NAS100D_PCI_IRQ_LINES] = | |
| 39 | { | |
| 40 | { IRQ_NAS100D_PCI_INTA, -1, -1 }, | |
| 41 | { IRQ_NAS100D_PCI_INTB, -1, -1 }, | |
| 42 | { IRQ_NAS100D_PCI_INTC, IRQ_NAS100D_PCI_INTD, IRQ_NAS100D_PCI_INTE }, | |
| 43 | }; | |
| 44 | ||
| 45 | int irq = -1; | |
| 46 | ||
| 47 | if (slot >= 1 && slot <= NAS100D_PCI_MAX_DEV && | |
| 48 | pin >= 1 && pin <= NAS100D_PCI_IRQ_LINES) | |
| 49 | irq = pci_irq_table[slot-1][pin-1]; | |
| 50 | ||
| 51 | return irq; | |
| 52 | } | |
| 53 | ||
| 54 | struct hw_pci __initdata nas100d_pci = { | |
| 55 | .nr_controllers = 1, | |
| 56 | .preinit = nas100d_pci_preinit, | |
| 57 | .swizzle = pci_std_swizzle, | |
| 58 | .setup = ixp4xx_setup, | |
| 59 | .scan = ixp4xx_scan_bus, | |
| 60 | .map_irq = nas100d_map_irq, | |
| 61 | }; | |
| 62 | ||
| 63 | int __init nas100d_pci_init(void) | |
| 64 | { | |
| 65 | if (machine_is_nas100d()) | |
| 66 | pci_common_init(&nas100d_pci); | |
| 67 | ||
| 68 | return 0; | |
| 69 | } | |
| 70 | ||
| 71 | subsys_initcall(nas100d_pci_init); |