1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/arch/arm/mach-footbridge/netwinder-pci.c 4 * 5 * PCI bios-type initialisation for PCI machines 6 * 7 * Bits taken from various places. 8 */ 9 #include <linux/kernel.h> 10 #include <linux/pci.h> 11 #include <linux/init.h> 12 13 #include <asm/irq.h> 14 #include <asm/mach/pci.h> 15 #include <asm/mach-types.h> 16 17 /* 18 * We now use the slot ID instead of the device identifiers to select 19 * which interrupt is routed where. 20 */ 21 static int netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 22 { 23 switch (slot) { 24 case 0: /* host bridge */ 25 return 0; 26 27 case 9: /* CyberPro */ 28 return IRQ_NETWINDER_VGA; 29 30 case 10: /* DC21143 */ 31 return IRQ_NETWINDER_ETHER100; 32 33 case 12: /* Winbond 553 */ 34 return IRQ_ISA_HARDDISK1; 35 36 case 13: /* Winbond 89C940F */ 37 return IRQ_NETWINDER_ETHER10; 38 39 default: 40 printk(KERN_ERR "PCI: unknown device in slot %s\n", 41 pci_name(dev)); 42 return 0; 43 } 44 } 45 46 static struct hw_pci netwinder_pci __initdata = { 47 .map_irq = netwinder_map_irq, 48 .nr_controllers = 1, 49 .ops = &dc21285_ops, 50 .setup = dc21285_setup, 51 .preinit = dc21285_preinit, 52 .postinit = dc21285_postinit, 53 }; 54 55 static int __init netwinder_pci_init(void) 56 { 57 if (machine_is_netwinder()) 58 pci_common_init(&netwinder_pci); 59 return 0; 60 } 61 62 subsys_initcall(netwinder_pci_init); 63