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/*
* Copyright 2010 Tilera Corporation. All Rights Reserved.
*
* 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, version 2.
*
* 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, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*
* Provide methods for the HARDWALL_FILE for accessing the UDN.
*/
#ifndef _ASM_TILE_HARDWALL_H
#define _ASM_TILE_HARDWALL_H
#include <linux/ioctl.h>
#define HARDWALL_IOCTL_BASE 0xa2
/*
* The HARDWALL_CREATE() ioctl is a macro with a "size" argument.
* The resulting ioctl value is passed to the kernel in conjunction
* with a pointer to a little-endian bitmask of cpus, which must be
* physically in a rectangular configuration on the chip.
* The "size" is the number of bytes of cpu mask data.
*/
#define _HARDWALL_CREATE 1
#define HARDWALL_CREATE(size) \
_IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size))
#define _HARDWALL_ACTIVATE 2
#define HARDWALL_ACTIVATE \
_IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE)
#define _HARDWALL_DEACTIVATE 3
#define HARDWALL_DEACTIVATE \
_IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE)
#define _HARDWALL_GET_ID 4
#define HARDWALL_GET_ID \
_IO(HARDWALL_IOCTL_BASE, _HARDWALL_GET_ID)
#ifndef __KERNEL__
/* This is the canonical name expected by userspace. */
#define HARDWALL_FILE "/dev/hardwall"
#else
/* /proc hooks for hardwall. */
struct proc_dir_entry;
#ifdef CONFIG_HARDWALL
void proc_tile_hardwall_init(struct proc_dir_entry *root);
int proc_pid_hardwall(struct task_struct *task, char *buffer);
#else
static inline void proc_tile_hardwall_init(struct proc_dir_entry *root) {}
#endif
#endif
#endif /* _ASM_TILE_HARDWALL_H */
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