microblaze_v8: Open firmware files
Reviewed-by: Ingo Molnar <mingo@elte.hu> Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek
parent
406107dacd
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7 changed files with 2910 additions and 0 deletions
45
arch/microblaze/include/asm/of_device.h
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45
arch/microblaze/include/asm/of_device.h
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/*
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* Copyright (C) 2007-2008 Michal Simek <monstr@monstr.eu>
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*
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* based on PowerPC of_device.h
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_OF_DEVICE_H
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#define _ASM_MICROBLAZE_OF_DEVICE_H
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#ifdef __KERNEL__
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#include <linux/device.h>
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#include <linux/of.h>
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/*
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* The of_device is a kind of "base class" that is a superset of
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* struct device for use by devices attached to an OF node and
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* probed using OF properties.
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*/
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struct of_device {
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struct device_node *node; /* to be obsoleted */
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u64 dma_mask; /* DMA mask */
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struct device dev; /* Generic device interface */
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};
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extern ssize_t of_device_get_modalias(struct of_device *ofdev,
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char *str, ssize_t len);
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extern struct of_device *of_device_alloc(struct device_node *np,
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const char *bus_id,
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struct device *parent);
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extern int of_device_uevent(struct device *dev,
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struct kobj_uevent_env *env);
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extern void of_device_make_bus_id(struct of_device *dev);
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/* This is just here during the transition */
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#include <linux/of_device.h>
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#endif /* __KERNEL__ */
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#endif /* _ASM_MICROBLAZE_OF_DEVICE_H */
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64
arch/microblaze/include/asm/of_platform.h
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64
arch/microblaze/include/asm/of_platform.h
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/*
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* Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
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* <benh@kernel.crashing.org>
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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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#ifndef _ASM_MICROBLAZE_OF_PLATFORM_H
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#define _ASM_MICROBLAZE_OF_PLATFORM_H
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/* This is just here during the transition */
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#include <linux/of_platform.h>
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/*
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* The list of OF IDs below is used for matching bus types in the
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* system whose devices are to be exposed as of_platform_devices.
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*
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* This is the default list valid for most platforms. This file provides
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* functions who can take an explicit list if necessary though
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*
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* The search is always performed recursively looking for children of
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* the provided device_node and recursively if such a children matches
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* a bus type in the list
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*/
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static const struct of_device_id of_default_bus_ids[] = {
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{ .type = "soc", },
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{ .compatible = "soc", },
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{ .type = "plb5", },
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{ .type = "plb4", },
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{ .type = "opb", },
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{ .type = "simple", },
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{},
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};
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/* Platform drivers register/unregister */
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static inline int of_register_platform_driver(struct of_platform_driver *drv)
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{
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return of_register_driver(drv, &of_platform_bus_type);
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}
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static inline void of_unregister_platform_driver(struct of_platform_driver *drv)
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{
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of_unregister_driver(drv);
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}
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/* Platform devices and busses creation */
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extern struct of_device *of_platform_device_create(struct device_node *np,
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const char *bus_id,
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struct device *parent);
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/* pseudo "matches" value to not do deep probe */
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#define OF_NO_DEEP_PROBE ((struct of_device_id *)-1)
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extern int of_platform_bus_probe(struct device_node *root,
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const struct of_device_id *matches,
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struct device *parent);
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extern struct of_device *of_find_device_by_phandle(phandle ph);
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extern void of_instantiate_rtc(void);
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#endif /* _ASM_MICROBLAZE_OF_PLATFORM_H */
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313
arch/microblaze/include/asm/prom.h
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313
arch/microblaze/include/asm/prom.h
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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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#ifndef _ASM_MICROBLAZE_PROM_H
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#define _ASM_MICROBLAZE_PROM_H
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#ifdef __KERNEL__
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <linux/platform_device.h>
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#include <asm/irq.h>
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#include <asm/atomic.h>
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#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
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#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
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#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l))
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#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
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#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
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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, 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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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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/* version 17 fields below */
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u32 dt_struct_size; /* size of the DT structure block */
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};
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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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};
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struct device_node {
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const char *name;
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const char *type;
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phandle node;
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phandle linux_phandle;
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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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static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
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{
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return test_bit(flag, &n->_flags);
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}
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static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
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{
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set_bit(flag, &n->_flags);
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}
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#define HAVE_ARCH_DEVTREE_FIXUPS
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static inline void set_node_proc_entry(struct device_node *dn,
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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 *allnodes; /* temporary while merging */
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extern rwlock_t devtree_lock; /* temporary while merging */
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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_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
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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(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 int early_uartlite_console(void);
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extern void early_init_devtree(void *);
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extern int machine_is_compatible(const char *compat);
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extern void print_properties(struct device_node *node);
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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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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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/* Helper to read a big number; size is in cells (not bytes) */
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static inline u64 of_read_number(const u32 *cell, int size)
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{
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u64 r = 0;
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while (size--)
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r = (r << 32) | *(cell++);
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return r;
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}
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/* Like of_read_number, but we want an unsigned long result */
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#define of_read_ulong(cell, size) of_read_number(cell, size)
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/* Translate an OF address block into a CPU physical address
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*/
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extern u64 of_translate_address(struct device_node *np, const 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 const u32 *of_get_address(struct device_node *dev, int index,
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u64 *size, unsigned int *flags);
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extern const 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, const void *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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/* Get the MAC address */
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extern const void *of_get_mac_address(struct device_node *np);
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/*
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* OF interrupt mapping
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*/
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/* This structure is returned when an interrupt is mapped. The controller
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* field needs to be put() after use
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*/
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#define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */
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struct of_irq {
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struct device_node *controller; /* Interrupt controller node */
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u32 size; /* Specifier size */
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u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
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};
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/**
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* of_irq_map_init - Initialize the irq remapper
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* @flags: flags defining workarounds to enable
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*
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* Some machines have bugs in the device-tree which require certain workarounds
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* to be applied. Call this before any interrupt mapping attempts to enable
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* those workarounds.
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*/
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#define OF_IMAP_OLDWORLD_MAC 0x00000001
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#define OF_IMAP_NO_PHANDLE 0x00000002
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extern void of_irq_map_init(unsigned int flags);
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/**
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* of_irq_map_raw - Low level interrupt tree parsing
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* @parent: the device interrupt parent
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* @intspec: interrupt specifier ("interrupts" property of the device)
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* @ointsize: size of the passed in interrupt specifier
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* @addr: address specifier (start of "reg" property of the device)
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* @out_irq: structure of_irq filled by this function
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*
|
||||||
|
* Returns 0 on success and a negative number on error
|
||||||
|
*
|
||||||
|
* This function is a low-level interrupt tree walking function. It
|
||||||
|
* can be used to do a partial walk with synthetized reg and interrupts
|
||||||
|
* properties, for example when resolving PCI interrupts when no device
|
||||||
|
* node exist for the parent.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
|
||||||
|
u32 ointsize, const u32 *addr,
|
||||||
|
struct of_irq *out_irq);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* of_irq_map_one - Resolve an interrupt for a device
|
||||||
|
* @device: the device whose interrupt is to be resolved
|
||||||
|
* @index: index of the interrupt to resolve
|
||||||
|
* @out_irq: structure of_irq filled by this function
|
||||||
|
*
|
||||||
|
* This function resolves an interrupt, walking the tree, for a given
|
||||||
|
* device-tree node. It's the high level pendant to of_irq_map_raw().
|
||||||
|
* It also implements the workarounds for OldWolrd Macs.
|
||||||
|
*/
|
||||||
|
extern int of_irq_map_one(struct device_node *device, int index,
|
||||||
|
struct of_irq *out_irq);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* of_irq_map_pci - Resolve the interrupt for a PCI device
|
||||||
|
* @pdev: the device whose interrupt is to be resolved
|
||||||
|
* @out_irq: structure of_irq filled by this function
|
||||||
|
*
|
||||||
|
* This function resolves the PCI interrupt for a given PCI device. If a
|
||||||
|
* device-node exists for a given pci_dev, it will use normal OF tree
|
||||||
|
* walking. If not, it will implement standard swizzling and walk up the
|
||||||
|
* PCI tree until an device-node is found, at which point it will finish
|
||||||
|
* resolving using the OF tree walking.
|
||||||
|
*/
|
||||||
|
struct pci_dev;
|
||||||
|
extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
|
||||||
|
|
||||||
|
extern int of_irq_to_resource(struct device_node *dev, int index,
|
||||||
|
struct resource *r);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* of_iomap - Maps the memory mapped IO for a given device_node
|
||||||
|
* @device: the device whose io range will be mapped
|
||||||
|
* @index: index of the io range
|
||||||
|
*
|
||||||
|
* Returns a pointer to the mapped memory
|
||||||
|
*/
|
||||||
|
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 /* _ASM_MICROBLAZE_PROM_H */
|
||||||
115
arch/microblaze/kernel/of_device.c
Normal file
115
arch/microblaze/kernel/of_device.c
Normal file
|
|
@ -0,0 +1,115 @@
|
||||||
|
#include <linux/string.h>
|
||||||
|
#include <linux/kernel.h>
|
||||||
|
#include <linux/of.h>
|
||||||
|
#include <linux/init.h>
|
||||||
|
#include <linux/module.h>
|
||||||
|
#include <linux/mod_devicetable.h>
|
||||||
|
#include <linux/slab.h>
|
||||||
|
#include <linux/of_device.h>
|
||||||
|
|
||||||
|
#include <linux/errno.h>
|
||||||
|
|
||||||
|
void of_device_make_bus_id(struct of_device *dev)
|
||||||
|
{
|
||||||
|
static atomic_t bus_no_reg_magic;
|
||||||
|
struct device_node *node = dev->node;
|
||||||
|
char *name = dev->dev.bus_id;
|
||||||
|
const u32 *reg;
|
||||||
|
u64 addr;
|
||||||
|
int magic;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* For MMIO, get the physical address
|
||||||
|
*/
|
||||||
|
reg = of_get_property(node, "reg", NULL);
|
||||||
|
if (reg) {
|
||||||
|
addr = of_translate_address(node, reg);
|
||||||
|
if (addr != OF_BAD_ADDR) {
|
||||||
|
snprintf(name, BUS_ID_SIZE,
|
||||||
|
"%llx.%s", (unsigned long long)addr,
|
||||||
|
node->name);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* No BusID, use the node name and add a globally incremented
|
||||||
|
* counter (and pray...)
|
||||||
|
*/
|
||||||
|
magic = atomic_add_return(1, &bus_no_reg_magic);
|
||||||
|
snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_device_make_bus_id);
|
||||||
|
|
||||||
|
struct of_device *of_device_alloc(struct device_node *np,
|
||||||
|
const char *bus_id,
|
||||||
|
struct device *parent)
|
||||||
|
{
|
||||||
|
struct of_device *dev;
|
||||||
|
|
||||||
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
||||||
|
if (!dev)
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
dev->node = of_node_get(np);
|
||||||
|
dev->dev.dma_mask = &dev->dma_mask;
|
||||||
|
dev->dev.parent = parent;
|
||||||
|
dev->dev.release = of_release_dev;
|
||||||
|
dev->dev.archdata.of_node = np;
|
||||||
|
|
||||||
|
if (bus_id)
|
||||||
|
strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
|
||||||
|
else
|
||||||
|
of_device_make_bus_id(dev);
|
||||||
|
|
||||||
|
return dev;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_device_alloc);
|
||||||
|
|
||||||
|
int of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
|
||||||
|
{
|
||||||
|
struct of_device *ofdev;
|
||||||
|
const char *compat;
|
||||||
|
int seen = 0, cplen, sl;
|
||||||
|
|
||||||
|
if (!dev)
|
||||||
|
return -ENODEV;
|
||||||
|
|
||||||
|
ofdev = to_of_device(dev);
|
||||||
|
|
||||||
|
if (add_uevent_var(env, "OF_NAME=%s", ofdev->node->name))
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
if (add_uevent_var(env, "OF_TYPE=%s", ofdev->node->type))
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
/* Since the compatible field can contain pretty much anything
|
||||||
|
* it's not really legal to split it out with commas. We split it
|
||||||
|
* up using a number of environment variables instead. */
|
||||||
|
|
||||||
|
compat = of_get_property(ofdev->node, "compatible", &cplen);
|
||||||
|
while (compat && *compat && cplen > 0) {
|
||||||
|
if (add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat))
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
sl = strlen(compat) + 1;
|
||||||
|
compat += sl;
|
||||||
|
cplen -= sl;
|
||||||
|
seen++;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen))
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
/* modalias is trickier, we add it in 2 steps */
|
||||||
|
if (add_uevent_var(env, "MODALIAS="))
|
||||||
|
return -ENOMEM;
|
||||||
|
sl = of_device_get_modalias(ofdev, &env->buf[env->buflen-1],
|
||||||
|
sizeof(env->buf) - env->buflen);
|
||||||
|
if (sl >= (sizeof(env->buf) - env->buflen))
|
||||||
|
return -ENOMEM;
|
||||||
|
env->buflen += sl;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_device_uevent);
|
||||||
201
arch/microblaze/kernel/of_platform.c
Normal file
201
arch/microblaze/kernel/of_platform.c
Normal file
|
|
@ -0,0 +1,201 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
|
||||||
|
* <benh@kernel.crashing.org>
|
||||||
|
* and Arnd Bergmann, 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.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#undef DEBUG
|
||||||
|
|
||||||
|
#include <linux/string.h>
|
||||||
|
#include <linux/kernel.h>
|
||||||
|
#include <linux/init.h>
|
||||||
|
#include <linux/module.h>
|
||||||
|
#include <linux/mod_devicetable.h>
|
||||||
|
#include <linux/slab.h>
|
||||||
|
#include <linux/pci.h>
|
||||||
|
#include <linux/of.h>
|
||||||
|
#include <linux/of_device.h>
|
||||||
|
#include <linux/of_platform.h>
|
||||||
|
|
||||||
|
#include <linux/errno.h>
|
||||||
|
#include <linux/topology.h>
|
||||||
|
#include <asm/atomic.h>
|
||||||
|
|
||||||
|
struct bus_type of_platform_bus_type = {
|
||||||
|
.uevent = of_device_uevent,
|
||||||
|
};
|
||||||
|
EXPORT_SYMBOL(of_platform_bus_type);
|
||||||
|
|
||||||
|
static int __init of_bus_driver_init(void)
|
||||||
|
{
|
||||||
|
return of_bus_type_init(&of_platform_bus_type, "of_platform");
|
||||||
|
}
|
||||||
|
postcore_initcall(of_bus_driver_init);
|
||||||
|
|
||||||
|
struct of_device *of_platform_device_create(struct device_node *np,
|
||||||
|
const char *bus_id,
|
||||||
|
struct device *parent)
|
||||||
|
{
|
||||||
|
struct of_device *dev;
|
||||||
|
|
||||||
|
dev = of_device_alloc(np, bus_id, parent);
|
||||||
|
if (!dev)
|
||||||
|
return NULL;
|
||||||
|
|
||||||
|
dev->dma_mask = 0xffffffffUL;
|
||||||
|
dev->dev.bus = &of_platform_bus_type;
|
||||||
|
|
||||||
|
/* We do not fill the DMA ops for platform devices by default.
|
||||||
|
* This is currently the responsibility of the platform code
|
||||||
|
* to do such, possibly using a device notifier
|
||||||
|
*/
|
||||||
|
|
||||||
|
if (of_device_register(dev) != 0) {
|
||||||
|
of_device_free(dev);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
return dev;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_platform_device_create);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* of_platform_bus_create - Create an OF device for a bus node and all its
|
||||||
|
* children. Optionally recursively instanciate matching busses.
|
||||||
|
* @bus: device node of the bus to instanciate
|
||||||
|
* @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to
|
||||||
|
* disallow recursive creation of child busses
|
||||||
|
*/
|
||||||
|
static int of_platform_bus_create(const struct device_node *bus,
|
||||||
|
const struct of_device_id *matches,
|
||||||
|
struct device *parent)
|
||||||
|
{
|
||||||
|
struct device_node *child;
|
||||||
|
struct of_device *dev;
|
||||||
|
int rc = 0;
|
||||||
|
|
||||||
|
for_each_child_of_node(bus, child) {
|
||||||
|
pr_debug(" create child: %s\n", child->full_name);
|
||||||
|
dev = of_platform_device_create(child, NULL, parent);
|
||||||
|
if (dev == NULL)
|
||||||
|
rc = -ENOMEM;
|
||||||
|
else if (!of_match_node(matches, child))
|
||||||
|
continue;
|
||||||
|
if (rc == 0) {
|
||||||
|
pr_debug(" and sub busses\n");
|
||||||
|
rc = of_platform_bus_create(child, matches, &dev->dev);
|
||||||
|
}
|
||||||
|
if (rc) {
|
||||||
|
of_node_put(child);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return rc;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* of_platform_bus_probe - Probe the device-tree for platform busses
|
||||||
|
* @root: parent of the first level to probe or NULL for the root of the tree
|
||||||
|
* @matches: match table, NULL to use the default
|
||||||
|
* @parent: parent to hook devices from, NULL for toplevel
|
||||||
|
*
|
||||||
|
* Note that children of the provided root are not instanciated as devices
|
||||||
|
* unless the specified root itself matches the bus list and is not NULL.
|
||||||
|
*/
|
||||||
|
|
||||||
|
int of_platform_bus_probe(struct device_node *root,
|
||||||
|
const struct of_device_id *matches,
|
||||||
|
struct device *parent)
|
||||||
|
{
|
||||||
|
struct device_node *child;
|
||||||
|
struct of_device *dev;
|
||||||
|
int rc = 0;
|
||||||
|
|
||||||
|
if (matches == NULL)
|
||||||
|
matches = of_default_bus_ids;
|
||||||
|
if (matches == OF_NO_DEEP_PROBE)
|
||||||
|
return -EINVAL;
|
||||||
|
if (root == NULL)
|
||||||
|
root = of_find_node_by_path("/");
|
||||||
|
else
|
||||||
|
of_node_get(root);
|
||||||
|
|
||||||
|
pr_debug("of_platform_bus_probe()\n");
|
||||||
|
pr_debug(" starting at: %s\n", root->full_name);
|
||||||
|
|
||||||
|
/* Do a self check of bus type, if there's a match, create
|
||||||
|
* children
|
||||||
|
*/
|
||||||
|
if (of_match_node(matches, root)) {
|
||||||
|
pr_debug(" root match, create all sub devices\n");
|
||||||
|
dev = of_platform_device_create(root, NULL, parent);
|
||||||
|
if (dev == NULL) {
|
||||||
|
rc = -ENOMEM;
|
||||||
|
goto bail;
|
||||||
|
}
|
||||||
|
pr_debug(" create all sub busses\n");
|
||||||
|
rc = of_platform_bus_create(root, matches, &dev->dev);
|
||||||
|
goto bail;
|
||||||
|
}
|
||||||
|
for_each_child_of_node(root, child) {
|
||||||
|
if (!of_match_node(matches, child))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
pr_debug(" match: %s\n", child->full_name);
|
||||||
|
dev = of_platform_device_create(child, NULL, parent);
|
||||||
|
if (dev == NULL)
|
||||||
|
rc = -ENOMEM;
|
||||||
|
else
|
||||||
|
rc = of_platform_bus_create(child, matches, &dev->dev);
|
||||||
|
if (rc) {
|
||||||
|
of_node_put(child);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
bail:
|
||||||
|
of_node_put(root);
|
||||||
|
return rc;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_platform_bus_probe);
|
||||||
|
|
||||||
|
static int of_dev_node_match(struct device *dev, void *data)
|
||||||
|
{
|
||||||
|
return to_of_device(dev)->node == data;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct of_device *of_find_device_by_node(struct device_node *np)
|
||||||
|
{
|
||||||
|
struct device *dev;
|
||||||
|
|
||||||
|
dev = bus_find_device(&of_platform_bus_type,
|
||||||
|
NULL, np, of_dev_node_match);
|
||||||
|
if (dev)
|
||||||
|
return to_of_device(dev);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_find_device_by_node);
|
||||||
|
|
||||||
|
static int of_dev_phandle_match(struct device *dev, void *data)
|
||||||
|
{
|
||||||
|
phandle *ph = data;
|
||||||
|
return to_of_device(dev)->node->linux_phandle == *ph;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct of_device *of_find_device_by_phandle(phandle ph)
|
||||||
|
{
|
||||||
|
struct device *dev;
|
||||||
|
|
||||||
|
dev = bus_find_device(&of_platform_bus_type,
|
||||||
|
NULL, &ph, of_dev_phandle_match);
|
||||||
|
if (dev)
|
||||||
|
return to_of_device(dev);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(of_find_device_by_phandle);
|
||||||
1147
arch/microblaze/kernel/prom.c
Normal file
1147
arch/microblaze/kernel/prom.c
Normal file
File diff suppressed because it is too large
Load diff
1025
arch/microblaze/kernel/prom_parse.c
Normal file
1025
arch/microblaze/kernel/prom_parse.c
Normal file
File diff suppressed because it is too large
Load diff
Loading…
Reference in a new issue