1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #ifndef _SOCKFS_SODIRECT_H 41 #define _SOCKFS_SODIRECT_H 42 43 /* 44 * Sodirect; used to support asynchronous DMA hardware 45 * (e.g. Intel's I/OAT). 46 */ 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 typedef struct sodirect_s { 53 boolean_t sod_enabled; /* sodirect_t enabled */ 54 mblk_t *sod_uioafh; /* To be freed list head, or NULL */ 55 mblk_t *sod_uioaft; /* To be freed list tail */ 56 uioa_t sod_uioa; /* Pending uio_t for uioa_t use */ 57 } sodirect_t; 58 59 /* 60 * Usefull macros: 61 */ 62 #define SOD_DISABLE(sodp) { \ 63 (sodp)->sod_enabled = B_FALSE; \ 64 } 65 66 #define SOD_SOTOSODP(so) ((sonode_t *)so)->so_direct 67 68 #define SOD_UIOAFINI(sodp) { \ 69 if ((sodp)->sod_uioa.uioa_state & UIOA_ENABLED) { \ 70 (sodp)->sod_uioa.uioa_state &= UIOA_CLR; \ 71 (sodp)->sod_uioa.uioa_state |= UIOA_FINI; \ 72 } \ 73 } 74 75 struct sonode; 76 struct sodirect_s; 77 78 extern uio_t *sod_rcv_init(struct sonode *, int, struct uio **); 79 extern int sod_rcv_done(struct sonode *, struct uio *, struct uio *); 80 81 extern void sod_uioa_mblk_init(struct sodirect_s *, mblk_t *, size_t); 82 extern void sod_uioa_so_init(struct sonode *, struct sodirect_s *, 83 struct uio *); 84 extern ssize_t sod_uioa_mblk(struct sonode *, mblk_t *); 85 extern void sod_uioa_mblk_done(struct sodirect_s *, mblk_t *); 86 87 extern int sod_init(void); 88 extern void sod_sock_init(struct sonode *); 89 extern void sod_sock_fini(struct sonode *); 90 91 #ifdef __cplusplus 92 } 93 #endif 94 95 #endif /* _SOCKFS_SODIRECT_H */ 96