2b1e597871
Do IRQ determination generically by parsing the PROM properties, and using IRQ controller drivers for final resolution. One immediate positive effect is that all of the IRQ frobbing in the EBUS, ISA, and PCI controller layers has been eliminated. We just look up the of_device and use the properly computed value. The PCI controller irq_build() routines are gone and no longer used. Unfortunately sbus_build_irq() has to remain as there is a direct reference to this in the sunzilog driver. That can be killed off once the sparc32 side of this is written and the sunzilog driver is transformed into an "of" bus driver. Signed-off-by: David S. Miller <davem@davemloft.net>
113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
#ifndef _SPARC64_PROM_H
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#define _SPARC64_PROM_H
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#ifdef __KERNEL__
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/*
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* Definitions for talking to the Open Firmware PROM on
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* Power Macintosh computers.
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*
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
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* Updates for SPARC64 by David S. Miller
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <asm/atomic.h>
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typedef u32 phandle;
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typedef u32 ihandle;
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struct property {
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char *name;
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int length;
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void *value;
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struct property *next;
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unsigned long _flags;
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unsigned int unique_id;
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};
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struct of_irq_controller;
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struct device_node {
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char *name;
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char *type;
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phandle node;
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char *path_component_name;
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char *full_name;
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struct property *properties;
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struct property *deadprops; /* removed properties */
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struct device_node *parent;
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struct device_node *child;
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struct device_node *sibling;
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struct device_node *next; /* next device of same type */
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struct device_node *allnext; /* next in list of all nodes */
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struct proc_dir_entry *pde; /* this node's proc directory */
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struct kref kref;
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unsigned long _flags;
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void *data;
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unsigned int unique_id;
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struct of_irq_controller *irq_trans;
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};
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struct of_irq_controller {
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unsigned int (*irq_build)(struct device_node *, unsigned int, void *);
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void *data;
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};
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/* flag descriptions */
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#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
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#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
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#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
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#define OF_BAD_ADDR ((u64)-1)
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static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
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{
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dn->pde = de;
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}
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extern struct device_node *of_find_node_by_name(struct device_node *from,
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const char *name);
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#define for_each_node_by_name(dn, name) \
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for (dn = of_find_node_by_name(NULL, name); dn; \
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dn = of_find_node_by_name(dn, name))
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extern struct device_node *of_find_node_by_type(struct device_node *from,
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const char *type);
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#define for_each_node_by_type(dn, type) \
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for (dn = of_find_node_by_type(NULL, type); dn; \
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dn = of_find_node_by_type(dn, type))
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extern struct device_node *of_find_compatible_node(struct device_node *from,
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const char *type, const char *compat);
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extern struct device_node *of_find_node_by_path(const char *path);
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extern struct device_node *of_find_node_by_phandle(phandle handle);
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extern struct device_node *of_get_parent(const struct device_node *node);
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extern struct device_node *of_get_next_child(const struct device_node *node,
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struct device_node *prev);
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extern struct property *of_find_property(struct device_node *np,
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const char *name,
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int *lenp);
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extern int of_device_is_compatible(struct device_node *device, const char *);
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extern void *of_get_property(struct device_node *node, const char *name,
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int *lenp);
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extern int of_set_property(struct device_node *node, const char *name, void *val, int len);
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extern int of_getintprop_default(struct device_node *np,
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const char *name,
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int def);
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extern int of_n_addr_cells(struct device_node *np);
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extern int of_n_size_cells(struct device_node *np);
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extern void prom_build_devicetree(void);
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#endif /* __KERNEL__ */
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#endif /* _SPARC64_PROM_H */
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