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 2009 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 30 #ifdef __lock_lint 31 #include <note.h> 32 #endif 33 #include <sys/scsi/scsi_types.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 /* 40 * SCSI Resource Function Declarations 41 */ 42 43 /* 44 * Defines for stating preferences in resource allocation 45 */ 46 47 #define NULL_FUNC ((int (*)())0) 48 #define SLEEP_FUNC ((int (*)())1) 49 50 #ifdef _KERNEL 51 /* 52 * Defines for the flags to scsi_init_pkt() 53 */ 54 #define PKT_CONSISTENT 0x0001 /* this is an 'iopb' packet */ 55 #define PKT_DMA_PARTIAL 0x040000 /* partial xfer ok */ 56 #define PKT_XARQ 0x080000 /* request for extra sense */ 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 int scsi_pkt_allocated_correctly(struct scsi_pkt *); 74 struct scsi_pkt *scsi_dmaget(struct scsi_pkt *, opaque_t, int (*)(void)); 75 void scsi_dmafree(struct scsi_pkt *); 76 void scsi_sync_pkt(struct scsi_pkt *); 77 78 /* 79 * Private wrapper for scsi_pkt's allocated via scsi_init_cache_pkt() 80 */ 81 struct scsi_pkt_cache_wrapper { 82 struct scsi_pkt pcw_pkt; 83 int pcw_magic; 84 uint_t pcw_total_xfer; 85 uint_t pcw_curwin; 86 uint_t pcw_totalwin; 87 uint_t pcw_granular; 88 struct buf *pcw_bp; 89 ddi_dma_cookie_t pcw_cookie; 90 uint_t pcw_flags; 91 }; 92 93 #ifdef __lock_lint 94 _NOTE(SCHEME_PROTECTS_DATA("unique per packet", 95 scsi_pkt_cache_wrapper::pcw_bp 96 scsi_pkt_cache_wrapper::pcw_curwin 97 scsi_pkt_cache_wrapper::pcw_flags 98 scsi_pkt_cache_wrapper::pcw_granular 99 scsi_pkt_cache_wrapper::pcw_total_xfer 100 scsi_pkt_cache_wrapper::pcw_totalwin)) 101 #endif 102 struct buf *scsi_pkt2bp(struct scsi_pkt *); 103 104 #define PCW_NEED_EXT_CDB 0x0001 105 #define PCW_NEED_EXT_TGT 0x0002 106 #define PCW_NEED_EXT_SCB 0x0004 107 #define PCW_BOUND 0x0020 108 109 /* 110 * Private defines i.e. not part of the DDI. 111 */ 112 #define DEFAULT_CDBLEN 16 113 #define DEFAULT_PRIVLEN 0 114 #define DEFAULT_SCBLEN (sizeof (struct scsi_arq_status)) 115 116 /* Private functions */ 117 size_t scsi_pkt_size(); 118 void scsi_size_clean(dev_info_t *); 119 120 /* Obsolete kernel functions: */ 121 struct scsi_pkt *scsi_pktalloc(struct scsi_address *, int, int, int (*)(void)); 122 struct scsi_pkt *scsi_resalloc(struct scsi_address *, int, 123 int, opaque_t, int (*)(void)); 124 void scsi_resfree(struct scsi_pkt *); 125 #define scsi_pktfree scsi_resfree 126 127 #endif /* _KERNEL */ 128 129 #ifdef __cplusplus 130 } 131 #endif 132 133 #endif /* _SYS_SCSI_SCSI_RESOURCE_H */ 134