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Commit 3ad1f3b3 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 

* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  of: merge of_find_all_nodes() implementations
  of: merge other miscellaneous prototypes
  of: merge of_*_flat_dt*() functions
  of: merge of_node_get(), of_node_put() and of_find_all_nodes()
  of: merge of_read_number() an of_read_ulong()
  of: merge of_node_*_flag() and set_node_proc_entry()
  of: merge struct boot_param_header from Microblaze and PowerPC
  of: add common header for flattened device tree representation
  of: Move OF_IS_DYNAMIC and OF_MARK_DYNAMIC macros to of.h
  of: merge struct device_node
  of: merge phandle, ihandle and struct property
  of: Rework linux/of.h and asm/prom.h include ordering
parents 1557d330 e91edcf5

arch/microblaze/include/asm/prom.h

+3 −132
Original line number Diff line number Diff line
@@ -12,23 +12,15 @@ 
 * 2 of the License, or (at your option) any later version.

 */



#include <linux/of.h>	/* linux/of.h gets to determine #include ordering */



#ifndef _ASM_MICROBLAZE_PROM_H

#define _ASM_MICROBLAZE_PROM_H

#ifdef __KERNEL__



/* 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



#ifndef __ASSEMBLY__



#include <linux/types.h>

#include <linux/of_fdt.h>

#include <linux/proc_fs.h>

#include <linux/platform_device.h>

#include <asm/irq.h>
@@ -41,122 +33,19 @@ 
#define of_prop_cmp(s1, s2)		strcmp((s1), (s2))

#define of_node_cmp(s1, s2)		strcasecmp((s1), (s2))



/*

 * 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 */

	/* version 17 fields below */

	u32	dt_struct_size; /* size of the DT structure block */

};



typedef u32 phandle;

typedef u32 ihandle;



struct property {

	char	*name;

	int	length;

	void	*value;

	struct property *next;

};



struct device_node {

	const char *name;

	const char *type;

	phandle	node;

	phandle linux_phandle;

	char	*full_name;



	struct	property *properties;

	struct	property *deadprops; /* removed 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;

	void	*data;

};



extern struct device_node *of_chosen;



static inline int of_node_check_flag(struct device_node *n, unsigned long flag)

{

	return test_bit(flag, &n->_flags);

}



static inline void of_node_set_flag(struct device_node *n, unsigned long flag)

{

	set_bit(flag, &n->_flags);

}



#define HAVE_ARCH_DEVTREE_FIXUPS



static inline void set_node_proc_entry(struct device_node *dn,

					struct proc_dir_entry *de)

{

	dn->pde = de;

}



extern struct device_node *allnodes;	/* temporary while merging */

extern rwlock_t devtree_lock;	/* temporary while merging */



extern struct device_node *of_find_all_nodes(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 scanning the flat device-tree at boot time */

extern int __init of_scan_flat_dt(int (*it)(unsigned long node,

					const char *uname, int depth,

					void *data),

				void *data);

extern void *__init of_get_flat_dt_prop(unsigned long node, const char *name,

					unsigned long *size);

extern int __init

		of_flat_dt_is_compatible(unsigned long node, const char *name);

extern unsigned long __init of_get_flat_dt_root(void);



/* For updating the device tree at runtime */

extern void of_attach_node(struct device_node *);

extern void of_detach_node(struct device_node *);



/* Other Prototypes */

extern void finish_device_tree(void);

extern void unflatten_device_tree(void);

extern int early_uartlite_console(void);

extern void early_init_devtree(void *);

extern int machine_is_compatible(const char *compat);

extern void print_properties(struct device_node *node);

extern int prom_n_intr_cells(struct device_node *np);

extern void prom_get_irq_senses(unsigned char *senses, int off, int max);

extern int prom_add_property(struct device_node *np, struct property *prop);

extern int prom_remove_property(struct device_node *np, struct property *prop);

extern int prom_update_property(struct device_node *np,

				struct property *newprop,

				struct property *oldprop);



extern struct resource *request_OF_resource(struct device_node *node,

				int index, const char *name_postfix);
@@ -166,18 +55,6 @@ extern int release_OF_resource(struct device_node *node, int index); 
 * OF address retreival & translation

 */



/* Helper to read a big number; size is in cells (not bytes) */

static inline u64 of_read_number(const u32 *cell, int size)

{

	u64 r = 0;

	while (size--)

		r = (r << 32) | *(cell++);

	return r;

}



/* Like of_read_number, but we want an unsigned long result */

#define of_read_ulong(cell, size)	of_read_number(cell, size)



/* Translate an OF address block into a CPU physical address

 */

extern u64 of_translate_address(struct device_node *np, const u32 *addr);
@@ -305,12 +182,6 @@ extern int of_irq_to_resource(struct device_node *dev, int index, 
 */

extern void __iomem *of_iomap(struct device_node *device, int index);



/*

 * NB: This is here while we transition from using asm/prom.h

 * to linux/of.h

 */

#include <linux/of.h>



#endif /* __ASSEMBLY__ */

#endif /* __KERNEL__ */

#endif /* _ASM_MICROBLAZE_PROM_H */

arch/microblaze/kernel/head.S

+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ 
#include <linux/linkage.h>

#include <asm/thread_info.h>

#include <asm/page.h>

#include <asm/prom.h>		/* for OF_DT_HEADER */

#include <linux/of_fdt.h>		/* for OF_DT_HEADER */



#ifdef CONFIG_MMU

#include <asm/setup.h> /* COMMAND_LINE_SIZE */

arch/microblaze/kernel/prom.c

+0 −23
Original line number Diff line number Diff line
@@ -859,29 +859,6 @@ struct device_node *of_find_node_by_phandle(phandle handle) 
}

EXPORT_SYMBOL(of_find_node_by_phandle);



/**

 *	of_find_all_nodes - Get next node in global list

 *	@prev:	Previous node or NULL to start iteration

 *		of_node_put() will be called on it

 *

 *	Returns a node pointer with refcount incremented, use

 *	of_node_put() on it when done.

 */

struct device_node *of_find_all_nodes(struct device_node *prev)

{

	struct device_node *np;



	read_lock(&devtree_lock);

	np = prev ? prev->allnext : allnodes;

	for (; np != NULL; np = np->allnext)

		if (of_node_get(np))

			break;

	of_node_put(prev);

	read_unlock(&devtree_lock);

	return np;

}

EXPORT_SYMBOL(of_find_all_nodes);



/**

 *	of_node_get - Increment refcount of a node

 *	@node:	Node to inc refcount, NULL is supported to

arch/powerpc/include/asm/prom.h

+2 −145
Original line number Diff line number Diff line 
#include <linux/of.h>	/* linux/of.h gets to determine #include ordering */

#ifndef _POWERPC_PROM_H

#define _POWERPC_PROM_H

#ifdef __KERNEL__
@@ -16,6 +17,7 @@ 
 * 2 of the License, or (at your option) any later version.

 */

#include <linux/types.h>

#include <linux/of_fdt.h>

#include <linux/proc_fs.h>

#include <linux/platform_device.h>

#include <asm/irq.h>
@@ -28,133 +30,14 @@ 
#define of_prop_cmp(s1, s2)		strcmp((s1), (s2))

#define of_node_cmp(s1, s2)		strcasecmp((s1), (s2))



/* 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 */

	/* version 17 fields below */

	u32	dt_struct_size;		/* size of the DT structure block */

};







typedef u32 phandle;

typedef u32 ihandle;



struct property {

	char	*name;

	int	length;

	void	*value;

	struct property *next;

};



struct device_node {

	const char *name;

	const char *type;

	phandle	node;

	phandle linux_phandle;

	char	*full_name;



	struct	property *properties;

	struct  property *deadprops; /* removed 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;

	void	*data;

};



extern struct device_node *of_chosen;



static inline int of_node_check_flag(struct device_node *n, unsigned long flag)

{

	return test_bit(flag, &n->_flags);

}



static inline void of_node_set_flag(struct device_node *n, unsigned long flag)

{

	set_bit(flag, &n->_flags);

}





#define HAVE_ARCH_DEVTREE_FIXUPS



static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)

{

	dn->pde = de;

}





extern struct device_node *of_find_all_nodes(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 scanning the flat device-tree at boot time */

extern int __init of_scan_flat_dt(int (*it)(unsigned long node,

					    const char *uname, int depth,

					    void *data),

				  void *data);

extern void* __init of_get_flat_dt_prop(unsigned long node, const char *name,

					unsigned long *size);

extern int __init of_flat_dt_is_compatible(unsigned long node, const char *name);

extern unsigned long __init of_get_flat_dt_root(void);



/* For updating the device tree at runtime */

extern void of_attach_node(struct device_node *);

extern void of_detach_node(struct device_node *);



/* Other Prototypes */

extern void finish_device_tree(void);

extern void unflatten_device_tree(void);

extern void early_init_devtree(void *);

extern int machine_is_compatible(const char *compat);

extern void print_properties(struct device_node *node);

extern int prom_n_intr_cells(struct device_node* np);

extern void prom_get_irq_senses(unsigned char *senses, int off, int max);

extern int prom_add_property(struct device_node* np, struct property* prop);

extern int prom_remove_property(struct device_node *np, struct property *prop);

extern int prom_update_property(struct device_node *np,

				struct property *newprop,

				struct property *oldprop);



#ifdef CONFIG_PPC32

/*

 * PCI <-> OF matching functions
@@ -178,26 +61,6 @@ extern int release_OF_resource(struct device_node* node, int index); 
 * OF address retreival & translation

 */





/* Helper to read a big number; size is in cells (not bytes) */

static inline u64 of_read_number(const u32 *cell, int size)

{

	u64 r = 0;

	while (size--)

		r = (r << 32) | *(cell++);

	return r;

}



/* Like of_read_number, but we want an unsigned long result */

#ifdef CONFIG_PPC32

static inline unsigned long of_read_ulong(const u32 *cell, int size)

{

	return cell[size-1];

}

#else

#define of_read_ulong(cell, size)	of_read_number(cell, size)

#endif



/* Translate an OF address block into a CPU physical address

 */

extern u64 of_translate_address(struct device_node *np, const u32 *addr);
@@ -349,11 +212,5 @@ extern int of_irq_to_resource(struct device_node *dev, int index, 
 */

extern void __iomem *of_iomap(struct device_node *device, int index);



/*

 * NB:  This is here while we transition from using asm/prom.h

 * to linux/of.h

 */

#include <linux/of.h>



#endif /* __KERNEL__ */

#endif /* _POWERPC_PROM_H */

arch/powerpc/kernel/prom.c

+0 −23
Original line number Diff line number Diff line
@@ -1316,29 +1316,6 @@ struct device_node *of_find_next_cache_node(struct device_node *np) 
	return NULL;

}



/**

 *	of_find_all_nodes - Get next node in global list

 *	@prev:	Previous node or NULL to start iteration

 *		of_node_put() will be called on it

 *

 *	Returns a node pointer with refcount incremented, use

 *	of_node_put() on it when done.

 */

struct device_node *of_find_all_nodes(struct device_node *prev)

{

	struct device_node *np;



	read_lock(&devtree_lock);

	np = prev ? prev->allnext : allnodes;

	for (; np != 0; np = np->allnext)

		if (of_node_get(np))

			break;

	of_node_put(prev);

	read_unlock(&devtree_lock);

	return np;

}

EXPORT_SYMBOL(of_find_all_nodes);



/**

 *	of_node_get - Increment refcount of a node

 *	@node:	Node to inc refcount, NULL is supported to