arch/x86/include/asm/prom.h

   1 /*
   2  * Definitions for Device tree / OpenFirmware handling on X86
   3  *
   4  * based on arch/powerpc/include/asm/prom.h which is
   5  *         Copyright (C) 1996-2005 Paul Mackerras.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version
  10  * 2 of the License, or (at your option) any later version.
  11  */
  12
  13 #ifndef _ASM_X86_PROM_H
  14 #define _ASM_X86_PROM_H
  15 #ifndef __ASSEMBLY__
  16
  17 #include <linux/of.h>
  18 #include <linux/types.h>
  19 #include <linux/pci.h>
  20
  21 #include <asm/irq.h>
  22 #include <asm/atomic.h>
  23 #include <asm/setup.h>
  24 #include <asm/irq_controller.h>
  25
  26 #ifdef CONFIG_OF
  27 extern int of_ioapic;
  28 extern u64 initial_dtb;
  29 extern void add_dtb(u64 data);
  30 void x86_dtb_find_config(void);
  31 void x86_dtb_get_config(unsigned int unused);
  32 void add_interrupt_host(struct irq_domain *ih);
  33 void __cpuinit x86_of_pci_init(void);
  34
  35 static inline struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
  36 {
  37         return pdev ? pdev->dev.of_node : NULL;
  38 }
  39
  40 static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
  41 {
  42         return pci_device_to_OF_node(bus->self);
  43 }
  44
  45 #else
  46 static inline void add_dtb(u64 data) { }
  47 static inline void x86_of_pci_init(void) { }
  48 #define x86_dtb_find_config x86_init_noop
  49 #define x86_dtb_get_config x86_init_uint_noop
  50 #define of_ioapic 0
  51 #endif
  52
  53 extern char cmd_line[COMMAND_LINE_SIZE];
  54
  55 #define pci_address_to_pio pci_address_to_pio
  56 unsigned long pci_address_to_pio(phys_addr_t addr);
  57
  58 /**
  59  * irq_dispose_mapping - Unmap an interrupt
  60  * @virq: linux virq number of the interrupt to unmap
  61  *
  62  * FIXME: We really should implement proper virq handling like power,
  63  * but that's going to be major surgery.
  64  */
  65 static inline void irq_dispose_mapping(unsigned int virq) { }
  66
  67 #define HAVE_ARCH_DEVTREE_FIXUPS
  68
  69 #endif /* __ASSEMBLY__ */
  70 #endif