1e45db9b8SAlan Cox /*- 25c0db7c7SAlan Cox * Copyright (c) 2003, 2005 Alan L. Cox <alc@cs.rice.edu> 3e45db9b8SAlan Cox * All rights reserved. 4e45db9b8SAlan Cox * 5e45db9b8SAlan Cox * Redistribution and use in source and binary forms, with or without 6e45db9b8SAlan Cox * modification, are permitted provided that the following conditions 7e45db9b8SAlan Cox * are met: 8e45db9b8SAlan Cox * 1. Redistributions of source code must retain the above copyright 9e45db9b8SAlan Cox * notice, this list of conditions and the following disclaimer. 10e45db9b8SAlan Cox * 2. Redistributions in binary form must reproduce the above copyright 11e45db9b8SAlan Cox * notice, this list of conditions and the following disclaimer in the 12e45db9b8SAlan Cox * documentation and/or other materials provided with the distribution. 13e45db9b8SAlan Cox * 14e45db9b8SAlan Cox * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15e45db9b8SAlan Cox * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16e45db9b8SAlan Cox * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17e45db9b8SAlan Cox * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18e45db9b8SAlan Cox * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19e45db9b8SAlan Cox * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20e45db9b8SAlan Cox * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21e45db9b8SAlan Cox * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22e45db9b8SAlan Cox * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23e45db9b8SAlan Cox * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24e45db9b8SAlan Cox * SUCH DAMAGE. 25e45db9b8SAlan Cox * 26e45db9b8SAlan Cox * $FreeBSD$ 27e45db9b8SAlan Cox */ 28e45db9b8SAlan Cox 29e45db9b8SAlan Cox #ifndef _MACHINE_SF_BUF_H_ 30e45db9b8SAlan Cox #define _MACHINE_SF_BUF_H_ 31e45db9b8SAlan Cox 32e45db9b8SAlan Cox #include <sys/queue.h> 33e45db9b8SAlan Cox 34e45db9b8SAlan Cox struct vm_page; 35e45db9b8SAlan Cox 36e45db9b8SAlan Cox struct sf_buf { 370543fa53SAlan Cox LIST_ENTRY(sf_buf) list_entry; /* list of buffers */ 38a5819cb5SAlan Cox TAILQ_ENTRY(sf_buf) free_entry; /* list of buffers */ 39e45db9b8SAlan Cox struct vm_page *m; /* currently mapped page */ 40e45db9b8SAlan Cox vm_offset_t kva; /* va of mapping */ 410543fa53SAlan Cox int ref_count; /* usage of this mapping */ 425c0db7c7SAlan Cox #ifdef SMP 435c0db7c7SAlan Cox cpumask_t cpumask; /* cpus on which mapping is valid */ 445c0db7c7SAlan Cox #endif 45e45db9b8SAlan Cox }; 46e45db9b8SAlan Cox 47e45db9b8SAlan Cox static __inline vm_offset_t 48e45db9b8SAlan Cox sf_buf_kva(struct sf_buf *sf) 49e45db9b8SAlan Cox { 50e45db9b8SAlan Cox 51e45db9b8SAlan Cox return (sf->kva); 52e45db9b8SAlan Cox } 53e45db9b8SAlan Cox 54e45db9b8SAlan Cox static __inline struct vm_page * 55e45db9b8SAlan Cox sf_buf_page(struct sf_buf *sf) 56e45db9b8SAlan Cox { 57e45db9b8SAlan Cox 58e45db9b8SAlan Cox return (sf->m); 59e45db9b8SAlan Cox } 60e45db9b8SAlan Cox 618a5ac5d5SKonstantin Belousov boolean_t sf_buf_invalidate_cache(vm_page_t m); 628a5ac5d5SKonstantin Belousov 63e45db9b8SAlan Cox #endif /* !_MACHINE_SF_BUF_H_ */ 64