/* * arch/arm/mach-iop32x/iq31244-pci.c * * PCI support for the Intel IQ31244 reference board * * Author: Rory Bolt <rorybolt@pacbell.net> * Copyright (C) 2002 Rory Bolt * Copyright (C) 2004 Intel Corp. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/kernel.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/string.h> #include <linux/slab.h> #include <asm/hardware.h> #include <asm/irq.h> #include <asm/mach/pci.h> #include <asm/mach-types.h> /* * The following macro is used to lookup irqs in a standard table * format for those systems that do not already have PCI * interrupts properly routed. We assume 1 <= pin <= 4 */ #define PCI_IRQ_TABLE_LOOKUP(minid,maxid) \ ({ int _ctl_ = -1; \ unsigned int _idsel = idsel - minid; \ if (_idsel <= maxid) \ _ctl_ = pci_irq_table[_idsel][pin-1]; \ _ctl_; }) #define INTA IRQ_IQ31244_INTA #define INTB IRQ_IQ31244_INTB #define INTC IRQ_IQ31244_INTC #define INTD IRQ_IQ31244_INTD #define INTE IRQ_IQ31244_I82546 static inline int __init iq31244_map_irq(struct pci_dev *dev, u8 idsel, u8 pin) { static int pci_irq_table[][4] = { /* * PCI IDSEL/INTPIN->INTLINE * A B C D */ #ifdef CONFIG_ARCH_EP80219 {INTB, INTB, INTB, INTB}, /* CFlash */ {INTE, INTE, INTE, INTE}, /* 82551 Pro 100 */ {INTD, INTD, INTD, INTD}, /* PCI-X Slot */ {INTC, INTC, INTC, INTC}, /* SATA */ #else {INTB, INTB, INTB, INTB}, /* CFlash */ {INTC, INTC, INTC, INTC}, /* SATA */ {INTD, INTD, INTD, INTD}, /* PCI-X Slot */ {INTE, INTE, INTE, INTE}, /* 82546 GigE */ #endif // CONFIG_ARCH_EP80219 }; BUG_ON(pin < 1 || pin > 4); return PCI_IRQ_TABLE_LOOKUP(0, 7); } static struct hw_pci iq31244_pci __initdata = { .swizzle = pci_std_swizzle, .nr_controllers = 1, .setup = iop3xx_pci_setup, .scan = iop3xx_pci_scan_bus, .preinit = iop3xx_pci_preinit, .map_irq = iq31244_map_irq }; static int __init iq31244_pci_init(void) { if (machine_is_iq31244()) pci_common_init(&iq31244_pci); return 0; } subsys_initcall(iq31244_pci_init);