arch/openrisc/include/asm/prom.h

   1 /*
   2  * OpenRISC Linux
   3  *
   4  * Linux architectural port borrowing liberally from similar works of
   5  * others.  All original copyrights apply as per the original source
   6  * declaration.
   7  *
   8  * OpenRISC implementation:
   9  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
  10  * et al.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  */
  17
  18 #include <linux/of.h>   /* linux/of.h gets to determine #include ordering */
  19
  20 #ifndef _ASM_OPENRISC_PROM_H
  21 #define _ASM_OPENRISC_PROM_H
  22 #ifdef __KERNEL__
  23 #ifndef __ASSEMBLY__
  24
  25 #include <linux/types.h>
  26 #include <asm/irq.h>
  27 #include <linux/atomic.h>
  28 #include <linux/of_irq.h>
  29 #include <linux/of_fdt.h>
  30 #include <linux/of_address.h>
  31 #include <linux/proc_fs.h>
  32 #include <linux/platform_device.h>
  33 #define HAVE_ARCH_DEVTREE_FIXUPS
  34
  35 /* Other Prototypes */
  36 extern int early_uartlite_console(void);
  37
  38 /* Parse the ibm,dma-window property of an OF node into the busno, phys and
  39  * size parameters.
  40  */
  41 void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
  42                 unsigned long *busno, unsigned long *phys, unsigned long *size);
  43
  44 extern void kdump_move_device_tree(void);
  45
  46 /* CPU OF node matching */
  47 struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
  48
  49 /* Get the MAC address */
  50 extern const void *of_get_mac_address(struct device_node *np);
  51
  52 /**
  53  * of_irq_map_pci - Resolve the interrupt for a PCI device
  54  * @pdev:       the device whose interrupt is to be resolved
  55  * @out_irq:    structure of_irq filled by this function
  56  *
  57  * This function resolves the PCI interrupt for a given PCI device. If a
  58  * device-node exists for a given pci_dev, it will use normal OF tree
  59  * walking. If not, it will implement standard swizzling and walk up the
  60  * PCI tree until an device-node is found, at which point it will finish
  61  * resolving using the OF tree walking.
  62  */
  63 struct pci_dev;
  64 extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
  65
  66 /* This routine is here to provide compatibility with how powerpc
  67  * handles IRQ mapping for OF device nodes.  We precompute and permanently
  68  * register them in the platform_device objects, whereas powerpc computes them
  69  * on request.
  70  */
  71 static inline void irq_dispose_mapping(unsigned int virq)
  72 {
  73 }
  74
  75 #endif /* __ASSEMBLY__ */
  76 #endif /* __KERNEL__ */
  77 #endif /* _ASM_OPENRISC_PROM_H */