Revert "Staging: android: delete android drivers"

menu "Android"

config ANDROID

	bool "Android Drivers"

	depends on BROKEN

	default N

	---help---

	  Enable support for various drivers needed on the Android platform

if ANDROID

config ANDROID_BINDER_IPC

	bool "Android Binder IPC Driver"

	default n

config ANDROID_LOGGER

	tristate "Android log driver"

	default n

config ANDROID_RAM_CONSOLE

	bool "Android RAM buffer console"

	default n

config ANDROID_RAM_CONSOLE_ENABLE_VERBOSE

	bool "Enable verbose console messages on Android RAM console"

	default y

	depends on ANDROID_RAM_CONSOLE

menuconfig ANDROID_RAM_CONSOLE_ERROR_CORRECTION

	bool "Android RAM Console Enable error correction"

	default n

	depends on ANDROID_RAM_CONSOLE

	depends on !ANDROID_RAM_CONSOLE_EARLY_INIT

	select REED_SOLOMON

	select REED_SOLOMON_ENC8

	select REED_SOLOMON_DEC8

if ANDROID_RAM_CONSOLE_ERROR_CORRECTION

config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE

	int "Android RAM Console Data data size"

	default 128

	help

	  Must be a power of 2.

config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE

	int "Android RAM Console ECC size"

	default 16

config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE

	int "Android RAM Console Symbol size"

	default 8

config ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL

	hex "Android RAM Console Polynomial"

	default 0x19 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 4)

	default 0x29 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 5)

	default 0x61 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 6)

	default 0x89 if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 7)

	default 0x11d if (ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE = 8)

endif # ANDROID_RAM_CONSOLE_ERROR_CORRECTION

config ANDROID_RAM_CONSOLE_EARLY_INIT

	bool "Start Android RAM console early"

	default n

	depends on ANDROID_RAM_CONSOLE

config ANDROID_RAM_CONSOLE_EARLY_ADDR

	hex "Android RAM console virtual address"

	default 0

	depends on ANDROID_RAM_CONSOLE_EARLY_INIT

config ANDROID_RAM_CONSOLE_EARLY_SIZE

	hex "Android RAM console buffer size"

	default 0

	depends on ANDROID_RAM_CONSOLE_EARLY_INIT

config ANDROID_TIMED_OUTPUT

	bool "Timed output class driver"

	default y

config ANDROID_TIMED_GPIO

	tristate "Android timed gpio driver"

	depends on GENERIC_GPIO && ANDROID_TIMED_OUTPUT

	default n

config ANDROID_LOW_MEMORY_KILLER

	bool "Android Low Memory Killer"

	default N

	---help---

	  Register processes to be killed when memory is low

endif # if ANDROID

endmenu

obj-$(CONFIG_ANDROID_BINDER_IPC)	+= binder.o

obj-$(CONFIG_ANDROID_LOGGER)		+= logger.o

obj-$(CONFIG_ANDROID_RAM_CONSOLE)	+= ram_console.o

obj-$(CONFIG_ANDROID_TIMED_OUTPUT)	+= timed_output.o

obj-$(CONFIG_ANDROID_TIMED_GPIO)	+= timed_gpio.o

obj-$(CONFIG_ANDROID_LOW_MEMORY_KILLER)	+= lowmemorykiller.o

TODO:

	- checkpatch.pl cleanups

	- sparse fixes

	- rename files to be not so "generic"

	- make sure things build as modules properly

	- add proper arch dependancies as needed

	- audit userspace interfaces to make sure they are sane

Please send patches to Greg Kroah-Hartman <greg@kroah.com> and Cc:

Brian Swetland <swetland@google.com>

/*

 * Copyright (C) 2008 Google, Inc.

 *

 * Based on, but no longer compatible with, the original

 * OpenBinder.org binder driver interface, which is:

 *

 * Copyright (c) 2005 Palmsource, Inc.

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and

 * may be copied, distributed, and modified under those terms.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 */

#ifndef _LINUX_BINDER_H

#define _LINUX_BINDER_H

#include <linux/ioctl.h>

#define B_PACK_CHARS(c1, c2, c3, c4) \

	((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))

#define B_TYPE_LARGE 0x85

enum {

	BINDER_TYPE_BINDER	= B_PACK_CHARS('s', 'b', '*', B_TYPE_LARGE),

	BINDER_TYPE_WEAK_BINDER	= B_PACK_CHARS('w', 'b', '*', B_TYPE_LARGE),

	BINDER_TYPE_HANDLE	= B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE),

	BINDER_TYPE_WEAK_HANDLE	= B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE),

	BINDER_TYPE_FD		= B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE),

};

enum {

	FLAT_BINDER_FLAG_PRIORITY_MASK = 0xff,

	FLAT_BINDER_FLAG_ACCEPTS_FDS = 0x100,

};

/*

 * This is the flattened representation of a Binder object for transfer

 * between processes.  The 'offsets' supplied as part of a binder transaction

 * contains offsets into the data where these structures occur.  The Binder

 * driver takes care of re-writing the structure type and data as it moves

 * between processes.

 */

struct flat_binder_object {

	/* 8 bytes for large_flat_header. */

	unsigned long		type;

	unsigned long		flags;

	/* 8 bytes of data. */

	union {

		void		*binder;	/* local object */

		signed long	handle;		/* remote object */

	};

	/* extra data associated with local object */

	void			*cookie;

};

/*

 * On 64-bit platforms where user code may run in 32-bits the driver must

 * translate the buffer (and local binder) addresses apropriately.

 */

struct binder_write_read {

	signed long	write_size;	/* bytes to write */

	signed long	write_consumed;	/* bytes consumed by driver */

	unsigned long	write_buffer;

	signed long	read_size;	/* bytes to read */

	signed long	read_consumed;	/* bytes consumed by driver */

	unsigned long	read_buffer;

};

/* Use with BINDER_VERSION, driver fills in fields. */

struct binder_version {

	/* driver protocol version -- increment with incompatible change */

	signed long	protocol_version;

};

/* This is the current protocol version. */

#define BINDER_CURRENT_PROTOCOL_VERSION 7

#define BINDER_WRITE_READ   		_IOWR('b', 1, struct binder_write_read)

#define	BINDER_SET_IDLE_TIMEOUT		_IOW('b', 3, int64_t)

#define	BINDER_SET_MAX_THREADS		_IOW('b', 5, size_t)

#define	BINDER_SET_IDLE_PRIORITY	_IOW('b', 6, int)

#define	BINDER_SET_CONTEXT_MGR		_IOW('b', 7, int)

#define	BINDER_THREAD_EXIT		_IOW('b', 8, int)

#define BINDER_VERSION			_IOWR('b', 9, struct binder_version)

/*

 * NOTE: Two special error codes you should check for when calling

 * in to the driver are:

 *

 * EINTR -- The operation has been interupted.  This should be

 * handled by retrying the ioctl() until a different error code

 * is returned.

 *

 * ECONNREFUSED -- The driver is no longer accepting operations

 * from your process.  That is, the process is being destroyed.

 * You should handle this by exiting from your process.  Note

 * that once this error code is returned, all further calls to

 * the driver from any thread will return this same code.

 */

enum transaction_flags {

	TF_ONE_WAY	= 0x01,	/* this is a one-way call: async, no return */

	TF_ROOT_OBJECT	= 0x04,	/* contents are the component's root object */

	TF_STATUS_CODE	= 0x08,	/* contents are a 32-bit status code */

	TF_ACCEPT_FDS	= 0x10,	/* allow replies with file descriptors */

};

struct binder_transaction_data {

	/* The first two are only used for bcTRANSACTION and brTRANSACTION,

	 * identifying the target and contents of the transaction.

	 */

	union {

		size_t	handle;	/* target descriptor of command transaction */

		void	*ptr;	/* target descriptor of return transaction */

	} target;

	void		*cookie;	/* target object cookie */

	unsigned int	code;		/* transaction command */

	/* General information about the transaction. */

	unsigned int	flags;

	pid_t		sender_pid;

	uid_t		sender_euid;

	size_t		data_size;	/* number of bytes of data */

	size_t		offsets_size;	/* number of bytes of offsets */

	/* If this transaction is inline, the data immediately

	 * follows here; otherwise, it ends with a pointer to

	 * the data buffer.

	 */

	union {

		struct {

			/* transaction data */

			const void	*buffer;

			/* offsets from buffer to flat_binder_object structs */

			const void	*offsets;

		} ptr;

		uint8_t	buf[8];

	} data;

};

struct binder_ptr_cookie {

	void *ptr;

	void *cookie;

};

struct binder_pri_desc {

	int priority;

	int desc;

};

struct binder_pri_ptr_cookie {

	int priority;

	void *ptr;

	void *cookie;

};

enum BinderDriverReturnProtocol {

	BR_ERROR = _IOR('r', 0, int),

	/*

	 * int: error code

	 */

	BR_OK = _IO('r', 1),

	/* No parameters! */

	BR_TRANSACTION = _IOR('r', 2, struct binder_transaction_data),

	BR_REPLY = _IOR('r', 3, struct binder_transaction_data),

	/*

	 * binder_transaction_data: the received command.

	 */

	BR_ACQUIRE_RESULT = _IOR('r', 4, int),

	/*

	 * not currently supported

	 * int: 0 if the last bcATTEMPT_ACQUIRE was not successful.

	 * Else the remote object has acquired a primary reference.

	 */

	BR_DEAD_REPLY = _IO('r', 5),

	/*

	 * The target of the last transaction (either a bcTRANSACTION or

	 * a bcATTEMPT_ACQUIRE) is no longer with us.  No parameters.

	 */

	BR_TRANSACTION_COMPLETE = _IO('r', 6),

	/*

	 * No parameters... always refers to the last transaction requested

	 * (including replies).  Note that this will be sent even for

	 * asynchronous transactions.

	 */

	BR_INCREFS = _IOR('r', 7, struct binder_ptr_cookie),

	BR_ACQUIRE = _IOR('r', 8, struct binder_ptr_cookie),

	BR_RELEASE = _IOR('r', 9, struct binder_ptr_cookie),

	BR_DECREFS = _IOR('r', 10, struct binder_ptr_cookie),

	/*

	 * void *:	ptr to binder

	 * void *: cookie for binder

	 */

	BR_ATTEMPT_ACQUIRE = _IOR('r', 11, struct binder_pri_ptr_cookie),

	/*

	 * not currently supported

	 * int:	priority

	 * void *: ptr to binder

	 * void *: cookie for binder

	 */

	BR_NOOP = _IO('r', 12),

	/*

	 * No parameters.  Do nothing and examine the next command.  It exists

	 * primarily so that we can replace it with a BR_SPAWN_LOOPER command.

	 */

	BR_SPAWN_LOOPER = _IO('r', 13),

	/*

	 * No parameters.  The driver has determined that a process has no

	 * threads waiting to service incomming transactions.  When a process

	 * receives this command, it must spawn a new service thread and

	 * register it via bcENTER_LOOPER.

	 */

	BR_FINISHED = _IO('r', 14),

	/*

	 * not currently supported

	 * stop threadpool thread

	 */

	BR_DEAD_BINDER = _IOR('r', 15, void *),

	/*

	 * void *: cookie

	 */

	BR_CLEAR_DEATH_NOTIFICATION_DONE = _IOR('r', 16, void *),

	/*

	 * void *: cookie

	 */

	BR_FAILED_REPLY = _IO('r', 17),

	/*

	 * The the last transaction (either a bcTRANSACTION or

	 * a bcATTEMPT_ACQUIRE) failed (e.g. out of memory).  No parameters.

	 */

};

enum BinderDriverCommandProtocol {

	BC_TRANSACTION = _IOW('c', 0, struct binder_transaction_data),

	BC_REPLY = _IOW('c', 1, struct binder_transaction_data),

	/*

	 * binder_transaction_data: the sent command.

	 */

	BC_ACQUIRE_RESULT = _IOW('c', 2, int),

	/*

	 * not currently supported

	 * int:  0 if the last BR_ATTEMPT_ACQUIRE was not successful.

	 * Else you have acquired a primary reference on the object.

	 */

	BC_FREE_BUFFER = _IOW('c', 3, int),

	/*

	 * void *: ptr to transaction data received on a read

	 */

	BC_INCREFS = _IOW('c', 4, int),

	BC_ACQUIRE = _IOW('c', 5, int),

	BC_RELEASE = _IOW('c', 6, int),

	BC_DECREFS = _IOW('c', 7, int),

	/*

	 * int:	descriptor

	 */

	BC_INCREFS_DONE = _IOW('c', 8, struct binder_ptr_cookie),

	BC_ACQUIRE_DONE = _IOW('c', 9, struct binder_ptr_cookie),

	/*

	 * void *: ptr to binder

	 * void *: cookie for binder

	 */

	BC_ATTEMPT_ACQUIRE = _IOW('c', 10, struct binder_pri_desc),

	/*

	 * not currently supported

	 * int: priority

	 * int: descriptor

	 */

	BC_REGISTER_LOOPER = _IO('c', 11),

	/*

	 * No parameters.

	 * Register a spawned looper thread with the device.

	 */

	BC_ENTER_LOOPER = _IO('c', 12),

	BC_EXIT_LOOPER = _IO('c', 13),

	/*

	 * No parameters.

	 * These two commands are sent as an application-level thread

	 * enters and exits the binder loop, respectively.  They are

	 * used so the binder can have an accurate count of the number

	 * of looping threads it has available.

	 */

	BC_REQUEST_DEATH_NOTIFICATION = _IOW('c', 14, struct binder_ptr_cookie),

	/*

	 * void *: ptr to binder

	 * void *: cookie

	 */

	BC_CLEAR_DEATH_NOTIFICATION = _IOW('c', 15, struct binder_ptr_cookie),

	/*

	 * void *: ptr to binder

	 * void *: cookie

	 */

	BC_DEAD_BINDER_DONE = _IOW('c', 16, void *),

	/*

	 * void *: cookie

	 */

};

#endif /* _LINUX_BINDER_H */