forked from luck/tmp_suning_uos_patched
acf7d76827
This is a first version of support for the Cell BE "Reliability, Availability and Serviceability" features. It doesn't yet handle some of the RAS interrupts (the ones described in iic_is/iic_irr), I'm still working on a proper way to expose these. They are essentially a cascaded controller by themselves (sic !) though I may just handle them locally to the iic driver. I need also to sync with David Erb on the way he hooked in the performance monitor interrupt. So that's all for 2.6.17 and I'll do more work on that with my rework of the powerpc interrupt layer that I'm hacking on at the moment. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
246 lines
8.5 KiB
C
246 lines
8.5 KiB
C
#ifndef _POWERPC_PROM_H
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#define _POWERPC_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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*
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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/config.h>
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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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/* Definitions used by the flattened device tree */
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#define OF_DT_HEADER 0xd00dfeed /* marker */
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#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
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#define OF_DT_END_NODE 0x2 /* End node */
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#define OF_DT_PROP 0x3 /* Property: name off, size,
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* content */
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#define OF_DT_NOP 0x4 /* nop */
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#define OF_DT_END 0x9
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#define OF_DT_VERSION 0x10
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/*
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* This is what gets passed to the kernel by prom_init or kexec
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*
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* The dt struct contains the device tree structure, full pathes and
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* property contents. The dt strings contain a separate block with just
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* the strings for the property names, and is fully page aligned and
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* self contained in a page, so that it can be kept around by the kernel,
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* each property name appears only once in this page (cheap compression)
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*
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* the mem_rsvmap contains a map of reserved ranges of physical memory,
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* passing it here instead of in the device-tree itself greatly simplifies
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* the job of everybody. It's just a list of u64 pairs (base/size) that
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* ends when size is 0
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*/
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struct boot_param_header
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{
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u32 magic; /* magic word OF_DT_HEADER */
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u32 totalsize; /* total size of DT block */
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u32 off_dt_struct; /* offset to structure */
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u32 off_dt_strings; /* offset to strings */
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u32 off_mem_rsvmap; /* offset to memory reserve map */
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u32 version; /* format version */
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u32 last_comp_version; /* last compatible version */
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/* version 2 fields below */
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u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
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/* version 3 fields below */
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u32 dt_strings_size; /* size of the DT strings block */
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};
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typedef u32 phandle;
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typedef u32 ihandle;
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struct interrupt_info {
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int line;
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int sense; /* +ve/-ve logic, edge or level, etc. */
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};
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struct property {
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char *name;
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int length;
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unsigned char *value;
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struct property *next;
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};
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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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phandle linux_phandle;
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int n_intrs;
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struct interrupt_info *intrs;
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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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};
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extern struct device_node *of_chosen;
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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 HAVE_ARCH_DEVTREE_FIXUPS
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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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/* OBSOLETE: Old style node lookup */
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extern struct device_node *find_devices(const char *name);
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extern struct device_node *find_type_devices(const char *type);
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extern struct device_node *find_path_device(const char *path);
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extern struct device_node *find_compatible_devices(const char *type,
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const char *compat);
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extern struct device_node *find_all_nodes(void);
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/* New style node lookup */
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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_find_all_nodes(struct device_node *prev);
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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 struct device_node *of_node_get(struct device_node *node);
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extern void of_node_put(struct device_node *node);
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/* For scanning the flat device-tree at boot time */
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extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
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const char *uname, int depth,
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void *data),
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void *data);
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extern void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
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unsigned long *size);
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extern int __init of_flat_dt_is_compatible(unsigned long node, const char *name);
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extern unsigned long __init of_get_flat_dt_root(void);
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/* For updating the device tree at runtime */
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extern void of_attach_node(struct device_node *);
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extern void of_detach_node(const struct device_node *);
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/* Other Prototypes */
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extern void finish_device_tree(void);
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extern void unflatten_device_tree(void);
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extern void early_init_devtree(void *);
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extern int device_is_compatible(struct device_node *device, const char *);
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extern int machine_is_compatible(const char *compat);
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extern unsigned char *get_property(struct device_node *node, const char *name,
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int *lenp);
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extern void print_properties(struct device_node *node);
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extern int prom_n_addr_cells(struct device_node* np);
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extern int prom_n_size_cells(struct device_node* np);
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extern int prom_n_intr_cells(struct device_node* np);
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extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
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extern int prom_add_property(struct device_node* np, struct property* prop);
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extern int prom_remove_property(struct device_node *np, struct property *prop);
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extern int prom_update_property(struct device_node *np,
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struct property *newprop,
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struct property *oldprop);
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#ifdef CONFIG_PPC32
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/*
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* PCI <-> OF matching functions
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* (XXX should these be here?)
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*/
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struct pci_bus;
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struct pci_dev;
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extern int pci_device_from_OF_node(struct device_node *node,
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u8* bus, u8* devfn);
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extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int);
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extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
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extern void pci_create_OF_bus_map(void);
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#endif
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extern struct resource *request_OF_resource(struct device_node* node,
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int index, const char* name_postfix);
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extern int release_OF_resource(struct device_node* node, int index);
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/*
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* OF address retreival & translation
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*/
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/* Translate an OF address block into a CPU physical address
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*/
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#define OF_BAD_ADDR ((u64)-1)
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extern u64 of_translate_address(struct device_node *np, u32 *addr);
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/* Extract an address from a device, returns the region size and
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* the address space flags too. The PCI version uses a BAR number
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* instead of an absolute index
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*/
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extern u32 *of_get_address(struct device_node *dev, int index,
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u64 *size, unsigned int *flags);
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extern u32 *of_get_pci_address(struct device_node *dev, int bar_no,
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u64 *size, unsigned int *flags);
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/* Get an address as a resource. Note that if your address is
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* a PIO address, the conversion will fail if the physical address
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* can't be internally converted to an IO token with
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* pci_address_to_pio(), that is because it's either called to early
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* or it can't be matched to any host bridge IO space
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*/
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extern int of_address_to_resource(struct device_node *dev, int index,
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struct resource *r);
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extern int of_pci_address_to_resource(struct device_node *dev, int bar,
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struct resource *r);
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/* Parse the ibm,dma-window property of an OF node into the busno, phys and
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* size parameters.
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*/
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void of_parse_dma_window(struct device_node *dn, unsigned char *dma_window_prop,
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unsigned long *busno, unsigned long *phys, unsigned long *size);
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extern void kdump_move_device_tree(void);
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/* CPU OF node matching */
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struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
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#endif /* __KERNEL__ */
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#endif /* _POWERPC_PROM_H */
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