git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * arch/arm/mach-iop3xx/iq80321-pci.c | |
| 3 | * | |
| 4 | * PCI support for the Intel IQ80321 reference board | |
| 5 | * | |
| 6 | * Author: Rory Bolt <rorybolt@pacbell.net> | |
| 7 | * Copyright (C) 2002 Rory Bolt | |
| 8 | * Copyright (C) 2004 Intel Corp. | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of the GNU General Public License version 2 as | |
| 12 | * published by the Free Software Foundation. | |
| 13 | */ | |
| 14 | #include <linux/kernel.h> | |
| 15 | #include <linux/pci.h> | |
| 16 | #include <linux/init.h> | |
| 4e57b681 TS |
17 | #include <linux/string.h> |
| 18 | #include <linux/slab.h> | |
| 1da177e4 LT |
19 | |
| 20 | #include <asm/hardware.h> | |
| 21 | #include <asm/irq.h> | |
| 22 | #include <asm/mach/pci.h> | |
| 23 | #include <asm/mach-types.h> | |
| 24 | ||
| 25 | /* | |
| 26 | * The following macro is used to lookup irqs in a standard table | |
| 27 | * format for those systems that do not already have PCI | |
| 28 | * interrupts properly routed. We assume 1 <= pin <= 4 | |
| 29 | */ | |
| 30 | #define PCI_IRQ_TABLE_LOOKUP(minid,maxid) \ | |
| 31 | ({ int _ctl_ = -1; \ | |
| 32 | unsigned int _idsel = idsel - minid; \ | |
| 33 | if (_idsel <= maxid) \ | |
| 34 | _ctl_ = pci_irq_table[_idsel][pin-1]; \ | |
| 35 | _ctl_; }) | |
| 36 | ||
| 37 | #define INTA IRQ_IQ80321_INTA | |
| 38 | #define INTB IRQ_IQ80321_INTB | |
| 39 | #define INTC IRQ_IQ80321_INTC | |
| 40 | #define INTD IRQ_IQ80321_INTD | |
| 41 | ||
| 42 | #define INTE IRQ_IQ80321_I82544 | |
| 43 | ||
| 44 | static inline int __init | |
| 45 | iq80321_map_irq(struct pci_dev *dev, u8 idsel, u8 pin) | |
| 46 | { | |
| 47 | static int pci_irq_table[][4] = { | |
| 48 | /* | |
| 49 | * PCI IDSEL/INTPIN->INTLINE | |
| 50 | * A B C D | |
| 51 | */ | |
| 52 | {INTE, INTE, INTE, INTE}, /* Gig-E */ | |
| 53 | {-1, -1, -1, -1}, /* Unused */ | |
| 54 | {INTC, INTD, INTA, INTB}, /* PCI-X Slot */ | |
| 55 | {-1, -1, -1, -1}, | |
| 56 | }; | |
| 57 | ||
| 58 | BUG_ON(pin < 1 || pin > 4); | |
| 59 | ||
| 60 | // return PCI_IRQ_TABLE_LOOKUP(4, 7); | |
| 61 | return pci_irq_table[idsel%4][pin-1]; | |
| 62 | } | |
| 63 | ||
| 64 | static int iq80321_setup(int nr, struct pci_sys_data *sys) | |
| 65 | { | |
| 66 | struct resource *res; | |
| 67 | ||
| 68 | if(nr != 0) | |
| 69 | return 0; | |
| 70 | ||
| 71 | res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL); | |
| 72 | if (!res) | |
| 73 | panic("PCI: unable to alloc resources"); | |
| 74 | ||
| 75 | memset(res, 0, sizeof(struct resource) * 2); | |
| 76 | ||
| 77 | res[0].start = IOP321_PCI_LOWER_IO_VA; | |
| 78 | res[0].end = IOP321_PCI_UPPER_IO_VA; | |
| 79 | res[0].name = "IQ80321 PCI I/O Space"; | |
| 80 | res[0].flags = IORESOURCE_IO; | |
| 81 | ||
| 82 | res[1].start = IOP321_PCI_LOWER_MEM_PA; | |
| 83 | res[1].end = IOP321_PCI_UPPER_MEM_PA; | |
| 84 | res[1].name = "IQ80321 PCI Memory Space"; | |
| 85 | res[1].flags = IORESOURCE_MEM; | |
| 86 | ||
| 87 | request_resource(&ioport_resource, &res[0]); | |
| 88 | request_resource(&iomem_resource, &res[1]); | |
| 89 | ||
| 90 | sys->mem_offset = IOP321_PCI_MEM_OFFSET; | |
| 91 | sys->io_offset = IOP321_PCI_IO_OFFSET; | |
| 92 | ||
| 93 | sys->resource[0] = &res[0]; | |
| 94 | sys->resource[1] = &res[1]; | |
| 95 | sys->resource[2] = NULL; | |
| 96 | ||
| 97 | return 1; | |
| 98 | } | |
| 99 | ||
| 100 | static void iq80321_preinit(void) | |
| 101 | { | |
| 102 | iop321_init(); | |
| 103 | } | |
| 104 | ||
| 105 | static struct hw_pci iq80321_pci __initdata = { | |
| 106 | .swizzle = pci_std_swizzle, | |
| 107 | .nr_controllers = 1, | |
| 108 | .setup = iq80321_setup, | |
| 109 | .scan = iop321_scan_bus, | |
| 110 | .preinit = iq80321_preinit, | |
| 111 | .map_irq = iq80321_map_irq | |
| 112 | }; | |
| 113 | ||
| 114 | static int __init iq80321_pci_init(void) | |
| 115 | { | |
| 116 | if (machine_is_iq80321()) | |
| 117 | pci_common_init(&iq80321_pci); | |
| 118 | return 0; | |
| 119 | } | |
| 120 | ||
| 121 | subsys_initcall(iq80321_pci_init); | |
| 122 | ||
| 123 | ||
| 124 | ||
| 125 |