linux-stable/drivers/input/input-compat.h
Chris Metcalf 18aecc2b64 arch/tile: finish enabling support for TILE-Gx 64-bit chip
This support was partially present in the existing code (look for
"__tilegx__" ifdefs) but with this change you can build a working
kernel using the TILE-Gx toolchain and ARCH=tilegx.

Most of these files are new, generally adding a foo_64.c file
where previously there was just a foo_32.c file.

The ARCH=tilegx directive redirects to arch/tile, not arch/tilegx,
using the existing SRCARCH mechanism in the top-level Makefile.

Changes to existing files:

- <asm/bitops.h> and <asm/bitops_32.h> changed to factor the
  include of <asm-generic/bitops/non-atomic.h> in the common header.

- <asm/compat.h> and arch/tile/kernel/compat.c changed to remove
  the "const" markers I had put on compat_sys_execve() when trying
  to match some recent similar changes to the non-compat execve.
  It turns out the compat version wasn't "upgraded" to use const.

- <asm/opcode-tile_64.h> and <asm/opcode_constants_64.h> were
  previously included accidentally, with the 32-bit contents.  Now
  they have the proper 64-bit contents.

Finally, I had to hack the existing hacky drivers/input/input-compat.h
to add yet another "#ifdef" for INPUT_COMPAT_TEST (same as x86_64).

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> [drivers/input]
2011-05-12 15:52:12 -04:00

92 lines
2.1 KiB
C

#ifndef _INPUT_COMPAT_H
#define _INPUT_COMPAT_H
/*
* 32bit compatibility wrappers for the input subsystem.
*
* Very heavily based on evdev.c - Copyright (c) 1999-2002 Vojtech Pavlik
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
#include <linux/compiler.h>
#include <linux/compat.h>
#include <linux/input.h>
#ifdef CONFIG_COMPAT
/* Note to the author of this code: did it ever occur to
you why the ifdefs are needed? Think about it again. -AK */
#if defined(CONFIG_X86_64) || defined(CONFIG_TILE)
# define INPUT_COMPAT_TEST is_compat_task()
#elif defined(CONFIG_S390)
# define INPUT_COMPAT_TEST test_thread_flag(TIF_31BIT)
#elif defined(CONFIG_MIPS)
# define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT_ADDR)
#else
# define INPUT_COMPAT_TEST test_thread_flag(TIF_32BIT)
#endif
struct input_event_compat {
struct compat_timeval time;
__u16 type;
__u16 code;
__s32 value;
};
struct ff_periodic_effect_compat {
__u16 waveform;
__u16 period;
__s16 magnitude;
__s16 offset;
__u16 phase;
struct ff_envelope envelope;
__u32 custom_len;
compat_uptr_t custom_data;
};
struct ff_effect_compat {
__u16 type;
__s16 id;
__u16 direction;
struct ff_trigger trigger;
struct ff_replay replay;
union {
struct ff_constant_effect constant;
struct ff_ramp_effect ramp;
struct ff_periodic_effect_compat periodic;
struct ff_condition_effect condition[2]; /* One for each axis */
struct ff_rumble_effect rumble;
} u;
};
static inline size_t input_event_size(void)
{
return INPUT_COMPAT_TEST ?
sizeof(struct input_event_compat) : sizeof(struct input_event);
}
#else
static inline size_t input_event_size(void)
{
return sizeof(struct input_event);
}
#endif /* CONFIG_COMPAT */
int input_event_from_user(const char __user *buffer,
struct input_event *event);
int input_event_to_user(char __user *buffer,
const struct input_event *event);
int input_ff_effect_from_user(const char __user *buffer, size_t size,
struct ff_effect *effect);
#endif /* _INPUT_COMPAT_H */