#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 #include #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 /* 4: version, 4: total size */ #define OF_DT_BEGIN_NODE 0x1 /* Start node: full name */ #define OF_DT_END_NODE 0x2 /* End node */ #define OF_DT_PROP 0x3 /* Property: name off, size, content */ #define OF_DT_END 0x9 #define OF_DT_VERSION 1 /* * 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; /* Which physical CPU id we're booting on */ }; 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 proc_dir_entry *name_link; /* name symlink */ struct proc_dir_entry *addr_link; /* addr symlink */ 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; } static void inline set_node_name_link(struct device_node *dn, struct proc_dir_entry *de) { dn->name_link = de; } static void inline set_node_addr_link(struct device_node *dn, struct proc_dir_entry *de) { dn->addr_link = 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 */