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 extern void x86_add_irq_domains(void);
  31 void __cpuinit x86_of_pci_init(void);
  32 void x86_dtb_init(void);
  33
  34 static inline struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
  35 {
  36         return pdev ? pdev->dev.of_node : NULL;
  37 }
  38
  39 static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
  40 {
  41         return pci_device_to_OF_node(bus->self);
  42 }
  43
  44 #else
  45 static inline void add_dtb(u64 data) { }
  46 static inline void x86_add_irq_domains(void) { }
  47 static inline void x86_of_pci_init(void) { }
  48 static inline void x86_dtb_init(void) { }
  49 #define of_ioapic 0
  50 #endif
  51
  52 extern char cmd_line[COMMAND_LINE_SIZE];
  53
  54 #define pci_address_to_pio pci_address_to_pio
  55 unsigned long pci_address_to_pio(phys_addr_t addr);
  56
  57 /**
  58  * irq_dispose_mapping - Unmap an interrupt
  59  * @virq: linux virq number of the interrupt to unmap
  60  *
  61  * FIXME: We really should implement proper virq handling like power,
  62  * but that's going to be major surgery.
  63  */
  64 static inline void irq_dispose_mapping(unsigned int virq) { }
  65
  66 #define HAVE_ARCH_DEVTREE_FIXUPS
  67
  68 #endif /* __ASSEMBLY__ */
  69 #endif