/* * linux/arch/arm/mach-footbridge/personal-pci.c * * PCI bios-type initialisation for PCI machines * * Bits taken from various places. */ #include <linux/kernel.h> #include <linux/pci.h> #include <linux/init.h> #include <asm/irq.h> #include <asm/mach/pci.h> #include <asm/mach-types.h> static int irqmap_personal_server[] __initdata = { IRQ_IN0, IRQ_IN1, IRQ_IN2, IRQ_IN3, 0, 0, 0, IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI }; static int __init personal_server_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { unsigned char line; pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line); if (line > 0x40 && line <= 0x5f) { /* line corresponds to the bit controlling this interrupt * in the footbridge. Ignore the first 8 interrupt bits, * look up the rest in the map. IN0 is bit number 8 */ return irqmap_personal_server[(line & 0x1f) - 8]; } else if (line == 0) { /* no interrupt */ return 0; } else return irqmap_personal_server[(line - 1) & 3]; } static struct hw_pci personal_server_pci __initdata = { .map_irq = personal_server_map_irq, .nr_controllers = 1, .ops = &dc21285_ops, .setup = dc21285_setup, .preinit = dc21285_preinit, .postinit = dc21285_postinit, }; static int __init personal_pci_init(void) { if (machine_is_personal_server()) pci_common_init(&personal_server_pci); return 0; } subsys_initcall(personal_pci_init);