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 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_SCSI_SCSI_RESOURCE_H 27 #define _SYS_SCSI_SCSI_RESOURCE_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __lock_lint 32 #include <note.h> 33 #endif 34 #include <sys/scsi/scsi_types.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 /* 41 * SCSI Resource Function Declarations 42 */ 43 44 /* 45 * Defines for stating preferences in resource allocation 46 */ 47 48 #define NULL_FUNC ((int (*)())0) 49 #define SLEEP_FUNC ((int (*)())1) 50 51 #ifdef _KERNEL 52 /* 53 * Defines for the flags to scsi_init_pkt() 54 */ 55 #define PKT_CONSISTENT 0x0001 /* this is an 'iopb' packet */ 56 #define PKT_DMA_PARTIAL 0x040000 /* partial xfer ok */ 57 58 /* 59 * Old PKT_CONSISTENT value for binary compatibility with x86 2.1 60 */ 61 #define PKT_CONSISTENT_OLD 0x001000 62 63 /* 64 * Kernel function declarations 65 */ 66 struct buf *scsi_alloc_consistent_buf(struct scsi_address *, 67 struct buf *, size_t, uint_t, int (*)(caddr_t), caddr_t); 68 struct scsi_pkt *scsi_init_pkt(struct scsi_address *, 69 struct scsi_pkt *, struct buf *, int, int, int, int, 70 int (*)(caddr_t), caddr_t); 71 void scsi_destroy_pkt(struct scsi_pkt *); 72 void scsi_free_consistent_buf(struct buf *); 73 struct scsi_pkt *scsi_resalloc(struct scsi_address *, int, 74 int, opaque_t, int (*)(void)); 75 struct scsi_pkt *scsi_pktalloc(struct scsi_address *, int, int, int (*)(void)); 76 struct scsi_pkt *scsi_dmaget(struct scsi_pkt *, opaque_t, int (*)(void)); 77 void scsi_dmafree(struct scsi_pkt *); 78 void scsi_sync_pkt(struct scsi_pkt *); 79 void scsi_resfree(struct scsi_pkt *); 80 81 /* 82 * Private wrapper for scsi_pkt's allocated via scsi_init_cache_pkt() 83 */ 84 struct scsi_pkt_cache_wrapper { 85 struct scsi_pkt pcw_pkt; 86 uint_t pcw_total_xfer; 87 uint_t pcw_curwin; 88 uint_t pcw_totalwin; 89 uint_t pcw_granular; 90 struct buf *pcw_bp; 91 ddi_dma_cookie_t pcw_cookie; 92 void (*pcw_orig_comp)(struct scsi_pkt *); 93 uint_t pcw_flags; 94 }; 95 96 #ifdef __lock_lint 97 _NOTE(SCHEME_PROTECTS_DATA("unique per packet", \ 98 scsi_pkt_cache_wrapper::pcw_orig_comp)) 99 #endif 100 struct buf *scsi_pkt2bp(struct scsi_pkt *); 101 102 #define PCW_NEED_EXT_CDB 0x0001 103 #define PCW_NEED_EXT_TGT 0x0002 104 #define PCW_NEED_EXT_SCB 0x0004 105 #define PCW_BOUND 0x0020 106 107 /* 108 * Private defines i.e. not part of the DDI. 109 */ 110 #define DEFAULT_CDBLEN 16 111 #define DEFAULT_PRIVLEN 0 112 #define DEFAULT_SCBLEN (sizeof (struct scsi_arq_status)) 113 114 /* 115 * Preliminary version of the SCSA specification 116 * mentioned a routine called scsi_pktfree, which 117 * turned out to be semantically equivialent to 118 * scsi_resfree. 119 */ 120 #define scsi_pktfree scsi_resfree 121 122 #endif /* _KERNEL */ 123 124 #ifdef __cplusplus 125 } 126 #endif 127 128 #endif /* _SYS_SCSI_SCSI_RESOURCE_H */ 129