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 2007 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 #define PKT_XARQ 0x080000 /* request for extra sense */ 58 59 /* 60 * Old PKT_CONSISTENT value for binary compatibility with x86 2.1 61 */ 62 #define PKT_CONSISTENT_OLD 0x001000 63 64 /* 65 * Kernel function declarations 66 */ 67 struct buf *scsi_alloc_consistent_buf(struct scsi_address *, 68 struct buf *, size_t, uint_t, int (*)(caddr_t), caddr_t); 69 struct scsi_pkt *scsi_init_pkt(struct scsi_address *, 70 struct scsi_pkt *, struct buf *, int, int, int, int, 71 int (*)(caddr_t), caddr_t); 72 void scsi_destroy_pkt(struct scsi_pkt *); 73 void scsi_free_consistent_buf(struct buf *); 74 struct scsi_pkt *scsi_resalloc(struct scsi_address *, int, 75 int, opaque_t, int (*)(void)); 76 struct scsi_pkt *scsi_pktalloc(struct scsi_address *, int, int, int (*)(void)); 77 struct scsi_pkt *scsi_dmaget(struct scsi_pkt *, opaque_t, int (*)(void)); 78 void scsi_dmafree(struct scsi_pkt *); 79 void scsi_sync_pkt(struct scsi_pkt *); 80 void scsi_resfree(struct scsi_pkt *); 81 82 /* 83 * Private wrapper for scsi_pkt's allocated via scsi_init_cache_pkt() 84 */ 85 struct scsi_pkt_cache_wrapper { 86 struct scsi_pkt pcw_pkt; 87 uint_t pcw_total_xfer; 88 uint_t pcw_curwin; 89 uint_t pcw_totalwin; 90 uint_t pcw_granular; 91 struct buf *pcw_bp; 92 ddi_dma_cookie_t pcw_cookie; 93 void (*pcw_orig_comp)(struct scsi_pkt *); 94 uint_t pcw_flags; 95 }; 96 97 #ifdef __lock_lint 98 _NOTE(SCHEME_PROTECTS_DATA("unique per packet", \ 99 scsi_pkt_cache_wrapper::pcw_orig_comp)) 100 #endif 101 struct buf *scsi_pkt2bp(struct scsi_pkt *); 102 103 #define PCW_NEED_EXT_CDB 0x0001 104 #define PCW_NEED_EXT_TGT 0x0002 105 #define PCW_NEED_EXT_SCB 0x0004 106 #define PCW_BOUND 0x0020 107 108 /* 109 * Private defines i.e. not part of the DDI. 110 */ 111 #define DEFAULT_CDBLEN 16 112 #define DEFAULT_PRIVLEN 0 113 #define DEFAULT_SCBLEN (sizeof (struct scsi_arq_status)) 114 115 /* 116 * Preliminary version of the SCSA specification 117 * mentioned a routine called scsi_pktfree, which 118 * turned out to be semantically equivialent to 119 * scsi_resfree. 120 */ 121 #define scsi_pktfree scsi_resfree 122 123 #endif /* _KERNEL */ 124 125 #ifdef __cplusplus 126 } 127 #endif 128 129 #endif /* _SYS_SCSI_SCSI_RESOURCE_H */ 130