/*-
 * Copyright (c) 2008,	Jeffrey Roberson <jeff@freebsd.org>
 * All rights reserved.
 *
 * Copyright (c) 2008 Nokia Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#pragma once

#include <xhyve/support/bitset.h>

#define	CPU_MAXSIZE	32

#ifndef	CPU_SETSIZE
#define	CPU_SETSIZE	CPU_MAXSIZE
#endif

// #define	_NCPUBITS	_BITSET_BITS
// #define	_NCPUWORDS	__bitset_words(CPU_SETSIZE)

BITSET_DEFINE(_cpuset, CPU_SETSIZE);
typedef struct _cpuset cpuset_t;

// #define	CPUSET_FSET		BITSET_FSET(_NCPUWORDS)
// #define	CPUSET_T_INITIALIZER	BITSET_T_INITIALIZER

// #define	CPUSETBUFSIZ	((2 + sizeof(long) * 2) * _NCPUWORDS)

#define	CPU_CLR(n, p)			BIT_CLR(CPU_SETSIZE, n, p)
// #define	CPU_COPY(f, t)			BIT_COPY(CPU_SETSIZE, f, t)
#define	CPU_ISSET(n, p)			BIT_ISSET(CPU_SETSIZE, n, p)
#define	CPU_SET(n, p)			BIT_SET(CPU_SETSIZE, n, p)
#define	CPU_ZERO(p) 			BIT_ZERO(CPU_SETSIZE, p)
// #define	CPU_FILL(p) 			BIT_FILL(CPU_SETSIZE, p)
#define	CPU_SETOF(n, p)			BIT_SETOF(CPU_SETSIZE, n, p)
#define	CPU_EMPTY(p)			BIT_EMPTY(CPU_SETSIZE, p)
// #define	CPU_ISFULLSET(p)		BIT_ISFULLSET(CPU_SETSIZE, p)
// #define	CPU_SUBSET(p, c)		BIT_SUBSET(CPU_SETSIZE, p, c)
// #define	CPU_OVERLAP(p, c)		BIT_OVERLAP(CPU_SETSIZE, p, c)
#define	CPU_CMP(p, c)			BIT_CMP(CPU_SETSIZE, p, c)
// #define	CPU_OR(d, s)			BIT_OR(CPU_SETSIZE, d, s)
#define	CPU_AND(d, s)			BIT_AND(CPU_SETSIZE, d, s)
// #define	CPU_NAND(d, s)			BIT_NAND(CPU_SETSIZE, d, s)
#define	CPU_CLR_ATOMIC(n, p)		BIT_CLR_ATOMIC(CPU_SETSIZE, n, p)
#define	CPU_SET_ATOMIC(n, p)		BIT_SET_ATOMIC(CPU_SETSIZE, n, p)
// #define	CPU_SET_ATOMIC_ACQ(n, p)	BIT_SET_ATOMIC_ACQ(CPU_SETSIZE, n, p)
// #define	CPU_AND_ATOMIC(n, p)		BIT_AND_ATOMIC(CPU_SETSIZE, n, p)
// #define	CPU_OR_ATOMIC(d, s)		BIT_OR_ATOMIC(CPU_SETSIZE, d, s)
// #define	CPU_COPY_STORE_REL(f, t)	BIT_COPY_STORE_REL(CPU_SETSIZE, f, t)
#define	CPU_FFS(p)			BIT_FFS(CPU_SETSIZE, p)
// #define	CPU_COUNT(p)			BIT_COUNT(CPU_SETSIZE, p)

// /*
//  * Valid cpulevel_t values.
//  */
// #define	CPU_LEVEL_ROOT		1	/* All system cpus. */
// #define	CPU_LEVEL_CPUSET	2	/* Available cpus for which. */
// #define	CPU_LEVEL_WHICH		3	/* Actual mask/id for which. */

// /*
//  * Valid cpuwhich_t values.
//  */
// #define	CPU_WHICH_TID		1	/* Specifies a thread id. */
// #define	CPU_WHICH_PID		2	/* Specifies a process id. */
// #define	CPU_WHICH_CPUSET	3	/* Specifies a set id. */
// #define	CPU_WHICH_IRQ		4	/* Specifies an irq #. */
// #define	CPU_WHICH_JAIL		5	/* Specifies a jail id. */
// #define	CPU_WHICH_DOMAIN	6	/* Specifies a NUMA domain id. */

// /*
//  * Reserved cpuset identifiers.
//  */
// #define	CPUSET_INVALID	-1
// #define	CPUSET_DEFAULT	0

// #ifdef _KERNEL
// LIST_HEAD(setlist, cpuset);

// /*
//  * cpusets encapsulate cpu binding information for one or more threads.
//  *
//  * 	a - Accessed with atomics.
//  *	s - Set at creation, never modified.  Only a ref required to read.
//  *	c - Locked internally by a cpuset lock.
//  *
//  * The bitmask is only modified while holding the cpuset lock.  It may be
//  * read while only a reference is held but the consumer must be prepared
//  * to deal with inconsistent results.
//  */
// struct cpuset {
// 	cpuset_t		cs_mask;	/* bitmask of valid cpus. */
// 	volatile u_int		cs_ref;		/* (a) Reference count. */
// 	int			cs_flags;	/* (s) Flags from below. */
// 	cpusetid_t		cs_id;		/* (s) Id or INVALID. */
// 	struct cpuset		*cs_parent;	/* (s) Pointer to our parent. */
// 	LIST_ENTRY(cpuset)	cs_link;	/* (c) All identified sets. */
// 	LIST_ENTRY(cpuset)	cs_siblings;	/* (c) Sibling set link. */
// 	struct setlist		cs_children;	/* (c) List of children. */
// };

// #define CPU_SET_ROOT    0x0001  /* Set is a root set. */
// #define CPU_SET_RDONLY  0x0002  /* No modification allowed. */

// extern cpuset_t *cpuset_root;
// struct prison;
// struct proc;

// struct cpuset *cpuset_thread0(void);
// struct cpuset *cpuset_ref(struct cpuset *);
// void	cpuset_rel(struct cpuset *);
// int	cpuset_setthread(lwpid_t id, cpuset_t *);
// int	cpuset_setithread(lwpid_t id, int cpu);
// int	cpuset_create_root(struct prison *, struct cpuset **);
// int	cpuset_setproc_update_set(struct proc *, struct cpuset *);
// char	*cpusetobj_strprint(char *, const cpuset_t *);
// int	cpusetobj_strscan(cpuset_t *, const char *);

// #else
// __BEGIN_DECLS
// int	cpuset(cpusetid_t *);
// int	cpuset_setid(cpuwhich_t, id_t, cpusetid_t);
// int	cpuset_getid(cpulevel_t, cpuwhich_t, id_t, cpusetid_t *);
// int	cpuset_getaffinity(cpulevel_t, cpuwhich_t, id_t, size_t, cpuset_t *);
// int	cpuset_setaffinity(cpulevel_t, cpuwhich_t, id_t, size_t, const cpuset_t *);
// __END_DECLS
// #endif
