projects / linux-2.6-block.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_IQ31244_INTA | |
| 38 | #define INTB IRQ_IQ31244_INTB | |
| 39 | #define INTC IRQ_IQ31244_INTC | |
| 40 | #define INTD IRQ_IQ31244_INTD | |
| 41 | ||
| 42 | #define INTE IRQ_IQ31244_I82546 | |
| 43 | ||
| 44 | static inline int __init | |
| 45 | iq31244_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 | #ifdef CONFIG_ARCH_EP80219 | |
| 53 | {INTB, INTB, INTB, INTB}, /* CFlash */ | |
| 54 | {INTE, INTE, INTE, INTE}, /* 82551 Pro 100 */ | |
| 55 | {INTD, INTD, INTD, INTD}, /* PCI-X Slot */ | |
| 56 | {INTC, INTC, INTC, INTC}, /* SATA */ | |
| 57 | #else | |
| 58 | {INTB, INTB, INTB, INTB}, /* CFlash */ | |
| 59 | {INTC, INTC, INTC, INTC}, /* SATA */ | |
| 60 | {INTD, INTD, INTD, INTD}, /* PCI-X Slot */ | |
| 61 | {INTE, INTE, INTE, INTE}, /* 82546 GigE */ | |
| 62 | #endif // CONFIG_ARCH_EP80219 | |
| 63 | }; | |
| 64 | ||
| 65 | BUG_ON(pin < 1 || pin > 4); | |
| 66 | ||
| 67 | return PCI_IRQ_TABLE_LOOKUP(0, 7); | |
| 68 | } | |
| 69 | ||
| 70 | static int iq31244_setup(int nr, struct pci_sys_data *sys) | |
| 71 | { | |
| 72 | struct resource *res; | |
| 73 | ||
| 74 | if(nr != 0) | |
| 75 | return 0; | |
| 76 | ||
| 77 | res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL); | |
| 78 | if (!res) | |
| 79 | panic("PCI: unable to alloc resources"); | |
| 80 | ||
| 81 | memset(res, 0, sizeof(struct resource) * 2); | |
| 82 | ||
| 83 | res[0].start = IOP321_PCI_LOWER_IO_VA; | |
| 84 | res[0].end = IOP321_PCI_UPPER_IO_VA; | |
| 85 | res[0].name = "IQ31244 PCI I/O Space"; | |
| 86 | res[0].flags = IORESOURCE_IO; | |
| 87 | ||
| 88 | res[1].start = IOP321_PCI_LOWER_MEM_PA; | |
| 89 | res[1].end = IOP321_PCI_UPPER_MEM_PA; | |
| 90 | res[1].name = "IQ31244 PCI Memory Space"; | |
| 91 | res[1].flags = IORESOURCE_MEM; | |
| 92 | ||
| 93 | request_resource(&ioport_resource, &res[0]); | |
| 94 | request_resource(&iomem_resource, &res[1]); | |
| 95 | ||
| 96 | sys->mem_offset = IOP321_PCI_MEM_OFFSET; | |
| 97 | sys->io_offset = IOP321_PCI_IO_OFFSET; | |
| 98 | ||
| 99 | sys->resource[0] = &res[0]; | |
| 100 | sys->resource[1] = &res[1]; | |
| 101 | sys->resource[2] = NULL; | |
| 102 | ||
| 103 | return 1; | |
| 104 | } | |
| 105 | ||
| 106 | static void iq31244_preinit(void) | |
| 107 | { | |
| 108 | iop321_init(); | |
| 109 | } | |
| 110 | ||
| 111 | static struct hw_pci iq31244_pci __initdata = { | |
| 112 | .swizzle = pci_std_swizzle, | |
| 113 | .nr_controllers = 1, | |
| 114 | .setup = iq31244_setup, | |
| 115 | .scan = iop321_scan_bus, | |
| 116 | .preinit = iq31244_preinit, | |
| 117 | .map_irq = iq31244_map_irq | |
| 118 | }; | |
| 119 | ||
| 120 | static int __init iq31244_pci_init(void) | |
| 121 | { | |
| 122 | if (machine_is_iq31244()) | |
| 123 | pci_common_init(&iq31244_pci); | |
| 124 | return 0; | |
| 125 | } | |
| 126 | ||
| 127 | subsys_initcall(iq31244_pci_init); | |
| 128 | ||
| 129 | ||
| 130 | ||
| 131 |