#ifndef _PPC64_PROM_H
#define _PPC64_PROM_H
/*
* Definitions for talking to the Open Firmware PROM on
* Power Macintosh computers.
*
* Copyright (C) 1996 Paul Mackerras.
*
* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/proc_fs.h>
#include <asm/atomic.h>
#define PTRRELOC(x) ((typeof(x))((unsigned long)(x) - offset))
#define PTRUNRELOC(x) ((typeof(x))((unsigned long)(x) + offset))
#define RELOC(x) (*PTRRELOC(&(x)))
/* Definitions used by the flattened device tree */
#define OF_DT_HEADER 0xd00dfeed /* marker */
#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
#define OF_DT_END_NODE 0x2 /* End node */
#define OF_DT_PROP 0x3 /* Property: name off, size,
* content */
#define OF_DT_NOP 0x4 /* nop */
#define OF_DT_END 0x9
#define OF_DT_VERSION 0x10
/*
* This is what gets passed to the kernel by prom_init or kexec
*
* The dt struct contains the device tree structure, full pathes and
* property contents. The dt strings contain a separate block with just
* the strings for the property names, and is fully page aligned and
* self contained in a page, so that it can be kept around by the kernel,
* each property name appears only once in this page (cheap compression)
*
* the mem_rsvmap contains a map of reserved ranges of physical memory,
* passing it here instead of in the device-tree itself greatly simplifies
* the job of everybody. It's just a list of u64 pairs (base/size) that
* ends when size is 0
*/
struct boot_param_header
{
u32 magic; /* magic word OF_DT_HEADER */
u32 totalsize; /* total size of DT block */
u32 off_dt_struct; /* offset to structure */
u32 off_dt_strings; /* offset to strings */
u32 off_mem_rsvmap; /* offset to memory reserve map */
u32 version; /* format version */
u32 last_comp_version; /* last compatible version */
/* version 2 fields below */
u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
/* version 3 fields below */
u32 dt_strings_size; /* size of the DT strings block */
};
typedef u32 phandle;
typedef u32 ihandle;
struct address_range {
unsigned long space;
unsigned long address;
unsigned long size;
};
struct interrupt_info {
int line;
int sense; /* +ve/-ve logic, edge or level, etc. */
};
struct pci_address {
u32 a_hi;
u32 a_mid;
u32 a_lo;
};
struct isa_address {
u32 a_hi;
u32 a_lo;
};
struct isa_range {
struct isa_address isa_addr;
struct pci_address pci_addr;
unsigned int size;
};
struct reg_property {
unsigned long address;
unsigned long size;
};
struct reg_property32 {
unsigned int address;
unsigned int size;
};
struct reg_property64 {
unsigned long address;
unsigned long size;
};
struct property {
char *name;
int length;
unsigned char *value;
struct property *next;
};
/* NOTE: the device_node contains PCI specific info for pci devices.
* This perhaps could be hung off the device_node with another struct,
* but for now it is directly in the node. The phb ptr is a good
* indication of a real PCI node. Other nodes leave these fields zeroed.
*/
struct pci_controller;
struct iommu_table;
struct device_node {
char *name;
char *type;
phandle node;
phandle linux_phandle;
int n_addrs;
struct address_range *addrs;
int n_intrs;
struct interrupt_info *intrs;
char *full_name;
/* PCI stuff probably doesn't belong here */
int busno; /* for pci devices */
int bussubno; /* for pci devices */
int devfn; /* for pci devices */
int eeh_mode; /* See eeh.h for possible EEH_MODEs */
int eeh_config_addr;
int pci_ext_config_space; /* for pci devices */
struct pci_controller *phb; /* for pci devices */
struct iommu_table *iommu_table; /* for phb's or bridges */
struct property *properties;
struct device_node *parent;
struct device_node *child;
struct device_node *sibling;
struct device_node *next; /* next device of same type */
struct device_node *allnext; /* next in list of all nodes */
struct proc_dir_entry *pde; /* this node's proc directory */
struct kref kref;
unsigned long _flags;
};
extern struct device_node *of_chosen;
/* flag descriptions */
#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
/*
* Until 32-bit ppc can add proc_dir_entries to its device_node
* definition, we cannot refer to pde, name_link, and addr_link
* in arch-independent code.
*/
#define HAVE_ARCH_DEVTREE_FIXUPS
static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
{
dn->pde = de;
}
/* OBSOLETE: Old stlye node lookup */
extern struct device_node *find_devices(const char *name);
extern struct device_node *find_type_devices(const char *type);
extern struct device_node *find_path_device(const char *path);
extern struct device_node *find_compatible_devices(const char *type,
const char *compat);
extern struct device_node *find_all_nodes(void);
/* New style node lookup */
extern struct device_node *of_find_node_by_name(struct device_node *from,
const char *name);
extern struct device_node *of_find_node_by_type(struct device_node *from,
const char *type);
extern struct device_node *of_find_compatible_node(struct device_node *from,
const char *type, const char *compat);
extern struct device_node *of_find_node_by_path(const char *path);
extern struct device_node *of_find_node_by_phandle(phandle handle);
extern struct device_node *of_find_all_nodes(struct device_node *prev);
extern struct device_node *of_get_parent(const struct device_node *node);
extern struct device_node *of_get_next_child(const struct device_node *node,
struct device_node *prev);
extern struct device_node *of_node_get(struct device_node *node);
extern void of_node_put(struct device_node *node);
/* For updating the device tree at runtime */
extern void of_attach_node(struct device_node *);
extern void of_detach_node(const struct device_node *);
/* Other Prototypes */
extern unsigned long prom_init(unsigned long, unsigned long, unsigned long,
unsigned long, unsigned long);
extern void finish_device_tree(void);
extern int device_is_compatible(struct device_node *device, const char *);
extern int machine_is_compatible(const char *compat);
extern unsigned char *get_property(struct device_node *node, const char *name,
int *lenp);
extern void print_properties(struct device_node *node);
extern int prom_n_addr_cells(struct device_node* np);
extern int prom_n_size_cells(struct device_node* np);
extern int prom_n_intr_cells(struct device_node* np);
extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
extern void prom_add_property(struct device_node* np, struct property* prop);
#endif /* _PPC64_PROM_H */
