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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1996, by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_DADA_IMPL_TRANSPORT_H 28 #define _SYS_DADA_IMPL_TRANSPORT_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * Include loadable module wrapper. 34 */ 35 #include <sys/modctl.h> 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #ifdef _KERNEL 42 /* 43 * DCD transport structure 44 * As each host adapter makes itself known to the system, 45 * It will create and register with the library the structure 46 * describe below. This is so that the library knows how to route 47 * packets, resource control requests, and capability requests 48 * for any particular host adapter. The 'a_hba_tran' field of a 49 * dcd_address structure made known to a target driver will point to 50 * one of these transport structures. 51 */ 52 53 typedef struct dcd_hba_tran dcd_hba_tran_t; 54 55 struct dcd_hba_tran { 56 uint_t version; 57 /* 58 * Ptr to the device info structure for thsi particular HBA 59 */ 60 dev_info_t *tran_hba_dip; 61 62 /* 63 * Private fields for use by the HBA itself 64 */ 65 void *tran_hba_private; /* HBA Softstate */ 66 void *tran_tgt_private; /* Target specific info */ 67 68 /* 69 * Only used to refer to a particular dcd device 70 * if the entire dcd_hba_tran_structure is cloned 71 * per target device, otherwise NULL. 72 */ 73 74 struct dcd_device *tran_sd; 75 76 /* 77 * vectors to point to specific HBA entry points. 78 */ 79 int (*tran_tgt_init)( 80 dev_info_t *hba_dip, 81 dev_info_t *tgt_dip, 82 dcd_hba_tran_t *hba_tran, 83 struct dcd_device *dcd); 84 85 int (*tran_tgt_probe)( 86 struct dcd_device *dcd, 87 int (*callback)(void)); 88 int (*tran_tgt_free)( 89 dev_info_t *hba_dip, 90 dev_info_t *tgt_dip, 91 dcd_hba_tran_t *hba_tran, 92 struct dcd_device *dcd); 93 94 int (*tran_start)( 95 struct dcd_address *ap, 96 struct dcd_pkt *pkt); 97 98 int (*tran_reset)( 99 struct dcd_address *ap, 100 int level); 101 102 int (*tran_abort)( 103 struct dcd_address *ap, 104 struct dcd_pkt *pkt); 105 106 struct dcd_pkt *(*tran_init_pkt)( 107 struct dcd_address *ap, 108 struct dcd_pkt *pkt, 109 struct buf *bp, 110 int cmdlen, 111 int statuslen, 112 int tgtlen, 113 int flags, 114 int (*callback)( 115 caddr_t arg), 116 caddr_t callback_arg); 117 118 void (*tran_destroy_pkt)( 119 struct dcd_address *ap, 120 struct dcd_pkt *pkt); 121 122 void (*tran_dmafree)( 123 struct dcd_address *ap, 124 struct dcd_pkt *pkt); 125 void (*tran_sync_pkt)( 126 struct dcd_address *ap, 127 struct dcd_pkt *pkt); 128 129 130 /* 131 * Implementation private specifics. 132 */ 133 int tran_hba_flags; /* flag option */ 134 135 /* 136 * min xfer and min/max burst sizes for DDI_CTLOPS_IOMIN 137 */ 138 uint_t tran_min_xfer; 139 uchar_t tran_min_burst_size; 140 uchar_t tran_max_burst_size; 141 }; 142 143 144 /* 145 * Prototypes for DCD HBA interface function. 146 */ 147 148 extern void dcd_initialize_hba_interface(void); 149 150 #ifdef NO_DADA_FINI_YET 151 extern void dcd_uninitialize_hba_interface(void); 152 #endif 153 154 extern int dcd_hba_init(struct modlinkage *modlp); 155 156 extern void dcd_hab_fini(struct modlinkage *modlp); 157 158 #ifdef NOTNEEDED 159 extern int dcd_hba_attach( 160 dev_info_t *dip, 161 ddi_dma_lim_t *hba_lim, 162 dcd_hba_tran_t *hba_tran, 163 int flags, 164 void *hba_options); 165 #endif 166 167 extern int dcd_hba_attach( 168 dev_info_t *dip, 169 ddi_dma_attr_t *hba_dma_attr, 170 dcd_hba_tran_t *hba_tran, 171 int flags); 172 173 extern int dcd_hba_detach( 174 dev_info_t *dip); 175 176 extern dcd_hba_tran_t *dcd_hba_tran_alloc( 177 dev_info_t *dip, 178 int flags); 179 180 extern void dcd_hba_tran_free( 181 dcd_hba_tran_t *hba_tran); 182 183 extern int dcd_hba_probe( 184 struct dcd_device *dcd, 185 int (*callback)(void)); 186 187 extern struct dcd_pkt *dcd_hba_pkt_alloc( 188 struct dcd_address *ap, 189 int cmdlen, 190 int statuslen, 191 int tgtlen, 192 int hbalen, 193 int (*callback)(caddr_t), 194 caddr_t arg); 195 196 extern void dcd_hba_pkt_free( 197 struct dcd_address *ap, 198 struct dcd_pkt *pkt); 199 200 extern int dcd_hba_lookup_capstr( 201 char *capstr); 202 extern int dcd_hba_in_panic(void); 203 204 /* 205 * Flags for dcd_hba_attach 206 */ 207 #define DCD_HBA_TRAN_CLONE 0x01 208 209 /* 210 * Flags for scsi_hab alloaction functions 211 */ 212 #define DCD_HBA_CANSLEEP 0x01 213 214 #endif /* _KERNEL */ 215 216 #ifdef __cplusplus 217 } 218 #endif 219 220 #endif /* _SYS_DADA_IMPL_TRANSPORT_H */ 221