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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _VM_XHAT_H
#define _VM_XHAT_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASM
#include <sys/types.h>
#include <vm/page.h>
#include <sys/kmem.h>
struct xhat;
struct xhat_hme_blk;
struct xhat_ops {
struct xhat *(*xhat_alloc)(void *);
void (*xhat_free)(struct xhat *);
void (*xhat_free_start)(struct xhat *);
void (*xhat_free_end)(struct xhat *);
int (*xhat_dup)(struct xhat *, struct xhat *, caddr_t,
size_t, uint_t);
void (*xhat_swapin)(struct xhat *);
void (*xhat_swapout)(struct xhat *);
void (*xhat_memload)(struct xhat *, caddr_t, struct page *,
uint_t, uint_t);
void (*xhat_memload_array)(struct xhat *, caddr_t, size_t,
struct page **, uint_t, uint_t);
void (*xhat_devload)(struct xhat *, caddr_t, size_t, pfn_t,
uint_t, int);
void (*xhat_unload)(struct xhat *, caddr_t, size_t, uint_t);
void (*xhat_unload_callback)(struct xhat *, caddr_t, size_t,
uint_t, hat_callback_t *);
void (*xhat_setattr)(struct xhat *, caddr_t, size_t, uint_t);
void (*xhat_clrattr)(struct xhat *, caddr_t, size_t, uint_t);
void (*xhat_chgattr)(struct xhat *, caddr_t, size_t, uint_t);
void (*xhat_unshare)(struct xhat *, caddr_t, size_t);
void (*xhat_chgprot)(struct xhat *, caddr_t, size_t, uint_t);
int (*xhat_pageunload)(struct xhat *, struct page *, uint_t,
void *);
};
#define XHAT_POPS(_p) (_p)->xhat_provider_ops
#define XHAT_PROPS(_h) XHAT_POPS(((struct xhat *)(_h))->xhat_provider)
#define XHAT_HOPS(hat, func, args) \
{ \
if (XHAT_PROPS(hat)-> /* */ func) \
XHAT_PROPS(hat)-> /* */ func /* */ args; \
}
#define XHAT_FREE_START(a) \
XHAT_HOPS(a, xhat_free_start, ((struct xhat *)(a)))
#define XHAT_FREE_END(a) \
XHAT_HOPS(a, xhat_free_end, ((struct xhat *)(a)))
#define XHAT_DUP(a, b, c, d, e) \
((XHAT_PROPS(a)->xhat_dup == NULL) ? (0) : \
XHAT_PROPS(a)->xhat_dup((struct xhat *)(a), \
(struct xhat *)(b), c, d, e))
#define XHAT_SWAPIN(a) \
XHAT_HOPS(a, xhat_swapin, ((struct xhat *)(a)))
#define XHAT_SWAPOUT(a) \
XHAT_HOPS(a, xhat_swapout, ((struct xhat *)(a)))
#define XHAT_MEMLOAD(a, b, c, d, e) \
XHAT_HOPS(a, xhat_memload, ((struct xhat *)(a), b, c, d, e))
#define XHAT_MEMLOAD_ARRAY(a, b, c, d, e, f) \
XHAT_HOPS(a, xhat_memload_array, ((struct xhat *)(a), b, c, d, e, f))
#define XHAT_DEVLOAD(a, b, c, d, e, f) \
XHAT_HOPS(a, xhat_devload, ((struct xhat *)(a), b, c, d, e, f))
#define XHAT_UNLOAD(a, b, c, d) \
XHAT_HOPS(a, xhat_unload, ((struct xhat *)(a), b, c, d))
#define XHAT_UNLOAD_CALLBACK(a, b, c, d, e) \
XHAT_HOPS(a, xhat_unload_callback, ((struct xhat *)(a), b, c, d, e))
#define XHAT_SETATTR(a, b, c, d) \
XHAT_HOPS(a, xhat_setattr, ((struct xhat *)(a), b, c, d))
#define XHAT_CLRATTR(a, b, c, d) \
XHAT_HOPS(a, xhat_clrattr, ((struct xhat *)(a), b, c, d))
#define XHAT_CHGATTR(a, b, c, d) \
XHAT_HOPS(a, xhat_chgattr, ((struct xhat *)(a), b, c, d))
#define XHAT_UNSHARE(a, b, c) \
XHAT_HOPS(a, xhat_unshare, ((struct xhat *)(a), b, c))
#define XHAT_CHGPROT(a, b, c, d) \
XHAT_HOPS(a, xhat_chgprot, ((struct xhat *)(a), b, c, d))
#define XHAT_PAGEUNLOAD(a, b, c, d) \
((XHAT_PROPS(a)->xhat_pageunload == NULL) ? (0) : \
XHAT_PROPS(a)->xhat_pageunload((struct xhat *)(a), b, c, d))
#define XHAT_PROVIDER_VERSION 1
/*
* Provider name will be appended with "_cache"
* when initializing kmem cache.
* The resulting sring must be less than
* KMEM_CACHE_NAMELEN
*/
#define XHAT_CACHE_NAMELEN 24
typedef struct xblk_cache {
kmutex_t lock;
kmem_cache_t *cache;
void *free_blks;
void (*reclaim)(void *);
} xblk_cache_t;
typedef struct xhat_provider {
int xhat_provider_version;
int xhat_provider_refcnt;
struct xhat_provider *next;
struct xhat_provider *prev;
char xhat_provider_name[XHAT_CACHE_NAMELEN];
xblk_cache_t *xblkcache;
struct xhat_ops *xhat_provider_ops;
int xhat_provider_blk_size;
} xhat_provider_t;
/*
* The xhat structure is protected by xhat_lock.
* A particular xhat implementation is a extension of the
* xhat structure and may contain its own lock(s) to
* protect those additional fields.
* The xhat structure is never allocated directly.
* Instead its allocation is provided by the hat implementation.
* The xhat provider ops xhat_alloc/xhat_free are used to
* alloc/free a implementation dependant xhat structure.
*/
struct xhat {
xhat_provider_t *xhat_provider;
struct as *xhat_as;
void *arg;
struct xhat *prev;
struct xhat *next;
kmutex_t xhat_lock;
int xhat_refcnt;
kthread_t *holder;
};
/* Error codes */
#define XH_PRVDR (1) /* Provider-specific error */
#define XH_ASBUSY (2) /* Address space is busy */
#define XH_XHHELD (3) /* XHAT is being held */
#define XH_NOTATTCHD (4) /* Provider is not attached to as */
int xhat_provider_register(xhat_provider_t *);
int xhat_provider_unregister(xhat_provider_t *);
void xhat_init(void);
int xhat_attach_xhat(xhat_provider_t *, struct as *, struct xhat **,
void *);
int xhat_detach_xhat(xhat_provider_t *, struct as *);
pfn_t xhat_insert_xhatblk(page_t *, struct xhat *, void **);
int xhat_delete_xhatblk(void *, int);
void xhat_hat_hold(struct xhat *);
void xhat_hat_rele(struct xhat *);
int xhat_hat_holders(struct xhat *);
void xhat_free_start_all(struct as *);
void xhat_free_end_all(struct as *);
int xhat_dup_all(struct as *, struct as *, caddr_t, size_t, uint_t);
void xhat_swapout_all(struct as *);
void xhat_unload_callback_all(struct as *, caddr_t, size_t, uint_t,
hat_callback_t *);
void xhat_setattr_all(struct as *, caddr_t, size_t, uint_t);
void xhat_clrattr_all(struct as *, caddr_t, size_t, uint_t);
void xhat_chgattr_all(struct as *, caddr_t, size_t, uint_t);
void xhat_chgprot_all(struct as *, caddr_t, size_t, uint_t);
void xhat_unshare_all(struct as *, caddr_t, size_t);
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _VM_XHAT_H */
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