| /* |
| * arch/arm/mach-iop3xx/iq80331-pci.c |
| * |
| * PCI support for the Intel IQ80331 reference board |
| * |
| * Author: Dave Jiang <dave.jiang@intel.com> |
| * Copyright (C) 2003, 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_IQ80331_INTA |
| #define INTB IRQ_IQ80331_INTB |
| #define INTC IRQ_IQ80331_INTC |
| #define INTD IRQ_IQ80331_INTD |
| |
| //#define INTE IRQ_IQ80331_I82544 |
| |
| static inline int __init |
| iq80331_map_irq(struct pci_dev *dev, u8 idsel, u8 pin) |
| { |
| static int pci_irq_table[][4] = { |
| /* |
| * PCI IDSEL/INTPIN->INTLINE |
| * A B C D |
| */ |
| {INTB, INTC, INTD, INTA}, /* PCI-X Slot */ |
| {INTC, INTC, INTC, INTC}, /* GigE */ |
| }; |
| |
| BUG_ON(pin < 1 || pin > 4); |
| |
| return PCI_IRQ_TABLE_LOOKUP(1, 7); |
| } |
| |
| static int iq80331_setup(int nr, struct pci_sys_data *sys) |
| { |
| struct resource *res; |
| |
| if(nr != 0) |
| return 0; |
| |
| res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL); |
| if (!res) |
| panic("PCI: unable to alloc resources"); |
| |
| memset(res, 0, sizeof(struct resource) * 2); |
| |
| res[0].start = IOP331_PCI_LOWER_IO_VA; |
| res[0].end = IOP331_PCI_UPPER_IO_VA; |
| res[0].name = "IQ80331 PCI I/O Space"; |
| res[0].flags = IORESOURCE_IO; |
| |
| res[1].start = IOP331_PCI_LOWER_MEM_PA; |
| res[1].end = IOP331_PCI_UPPER_MEM_PA; |
| res[1].name = "IQ80331 PCI Memory Space"; |
| res[1].flags = IORESOURCE_MEM; |
| |
| request_resource(&ioport_resource, &res[0]); |
| request_resource(&iomem_resource, &res[1]); |
| |
| sys->mem_offset = IOP331_PCI_MEM_OFFSET; |
| sys->io_offset = IOP331_PCI_IO_OFFSET; |
| |
| sys->resource[0] = &res[0]; |
| sys->resource[1] = &res[1]; |
| sys->resource[2] = NULL; |
| |
| return 1; |
| } |
| |
| static void iq80331_preinit(void) |
| { |
| iop331_init(); |
| } |
| |
| static struct hw_pci iq80331_pci __initdata = { |
| .swizzle = pci_std_swizzle, |
| .nr_controllers = 1, |
| .setup = iq80331_setup, |
| .scan = iop331_scan_bus, |
| .preinit = iq80331_preinit, |
| .map_irq = iq80331_map_irq |
| }; |
| |
| static int __init iq80331_pci_init(void) |
| { |
| if (machine_is_iq80331()) |
| pci_common_init(&iq80331_pci); |
| return 0; |
| } |
| |
| subsys_initcall(iq80331_pci_init); |
| |
| |
| |
| |