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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_MEM_CONFIG_H
#define _SYS_MEM_CONFIG_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Memory add/delete interfaces.
*/
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _KERNEL
/*
* Memory add/delete client interface.
*/
extern int kphysm_add_memory_dynamic(pfn_t base, pgcnt_t npgs);
typedef void *memhandle_t;
/*
* Managed pages have associated page structures ('page_t's).
* The difference between phys_pages and managed is accounted for by
* boot time memory allocation for the kernel text and data, and also
* for page structures.
*/
typedef struct {
pgcnt_t phys_pages; /* total physical pages */
pgcnt_t managed; /* providing this many managed pages */
pgcnt_t nonrelocatable; /* of which this many non-relocatable */
pfn_t first_nonrelocatable;
pfn_t last_nonrelocatable;
} memquery_t;
typedef struct {
pgcnt_t phys_pages; /* total physical pages */
pgcnt_t managed; /* providing this many managed pages */
pgcnt_t collected; /* done when == managed */
} memdelstat_t;
extern int kphysm_del_gethandle(memhandle_t *);
extern int kphysm_del_span(memhandle_t, pfn_t base, pgcnt_t npgs);
extern int kphysm_del_span_query(pfn_t base, pgcnt_t npgs, memquery_t *);
extern int kphysm_del_start(memhandle_t,
void (*complete)(void *, int error), void *arg);
extern int kphysm_del_release(memhandle_t);
extern int kphysm_del_cancel(memhandle_t);
extern int kphysm_del_status(memhandle_t, memdelstat_t *);
/*
* Error returns.
*/
#define KPHYSM_OK 0 /* Success */
#define KPHYSM_ESPAN 1 /* Memory already in use (add) */
#define KPHYSM_EFAULT 2 /* Memory access test failed (add) */
#define KPHYSM_ERESOURCE 3 /* Some resource was not available */
#define KPHYSM_ENOTSUP 4 /* Operation not supported */
#define KPHYSM_ENOHANDLES 5 /* Cannot allocate any more handles */
#define KPHYSM_ENONRELOC 6 /* Non-relocatable pages in span */
#define KPHYSM_EHANDLE 7 /* Bad handle supplied */
#define KPHYSM_EBUSY 8 /* Memory in span is being deleted */
#define KPHYSM_ENOTVIABLE 9 /* VM viability test failed */
#define KPHYSM_ESEQUENCE 10 /* Function called out of sequence */
#define KPHYSM_ENOWORK 11 /* No pages to delete */
#define KPHYSM_ECANCELLED 12 /* kphysm_del_cancel (for complete) */
#define KPHYSM_EREFUSED 13 /* kphysm_pre_del fail (for complete) */
#define KPHYSM_ENOTFINISHED 14 /* Thread not finished */
#define KPHYSM_ENOTRUNNING 15 /* Thread not running */
#define KPHYSM_EDUP 16 /* Memory span duplicate (delete) */
/*
* Memory system change call-back interface.
*/
#define KPHYSM_SETUP_VECTOR_VERSION 1
typedef struct {
uint_t version;
void (*post_add)(void *arg, pgcnt_t delta_pages);
int (*pre_del)(void *arg, pgcnt_t delta_pages);
void (*post_del)(void *arg, pgcnt_t delta_pages,
int cancelled);
} kphysm_setup_vector_t;
/*
* The register function returns 0 if the vector/arg pair is recorded
* successfully.
* The error returns are:
* EEXIST if the vector/arg pair is already registered.
* EINVAL if the vector version is not supported.
* ENOMEM if the registration could not be stored.
*
* A return of EEXIST should be considered a program logic error by
* the caller.
*/
extern int kphysm_setup_func_register(kphysm_setup_vector_t *, void *arg);
extern void kphysm_setup_func_unregister(kphysm_setup_vector_t *, void *arg);
/*
* Memory add/delete architecture (lower) interfaces.
* These interfaces should not be used by drivers.
*/
extern int arch_kphysm_del_span_ok(pfn_t, pgcnt_t);
extern int arch_kphysm_relocate(pfn_t, pgcnt_t);
extern int arch_kphysm_del_supported(void);
extern int pfn_is_being_deleted(pfn_t);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MEM_CONFIG_H */
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