siopvar_common.h revision 1.12
1 /* $NetBSD: siopvar_common.h,v 1.12 2001/10/22 16:45:28 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33 /* common struct and routines used by siop and esiop */ 34 35 #ifndef SIOP_DEFAULT_TARGET 36 #define SIOP_DEFAULT_TARGET 7 37 #endif 38 39 /* tables used by SCRIPT */ 40 typedef struct scr_table { 41 u_int32_t count; 42 u_int32_t addr; 43 } scr_table_t __attribute__((__packed__)); 44 45 /* Number of scatter/gather entries */ 46 #define SIOP_NSG (MAXPHYS/NBPG + 1) /* XXX NBPG */ 47 48 /* Number of tag */ 49 #define SIOP_NTAG 16 50 51 /* 52 * This structure interfaces the SCRIPT with the driver; it describes a full 53 * transfer. 54 */ 55 struct siop_xfer_common { 56 u_int8_t msg_out[8]; /* 0 */ 57 u_int8_t msg_in[8]; /* 8 */ 58 u_int32_t status; /* 16 */ 59 u_int32_t pad1; /* 20 */ 60 u_int32_t id; /* 24 */ 61 u_int32_t pad2; /* 28 */ 62 scr_table_t t_msgin; /* 32 */ 63 scr_table_t t_extmsgin; /* 40 */ 64 scr_table_t t_extmsgdata; /* 48 */ 65 scr_table_t t_msgout; /* 56 */ 66 scr_table_t cmd; /* 64 */ 67 scr_table_t t_status; /* 72 */ 68 scr_table_t data[SIOP_NSG]; /* 80 */ 69 } __attribute__((__packed__)); 70 71 /* status can hold the SCSI_* status values, and 2 additionnal values: */ 72 #define SCSI_SIOP_NOCHECK 0xfe /* don't check the scsi status */ 73 #define SCSI_SIOP_NOSTATUS 0xff /* device didn't report status */ 74 75 /* xfer description of the script: tables and reselect script */ 76 struct siop_xfer { 77 struct siop_xfer_common tables; 78 /* u_int32_t resel[sizeof(load_dsa) / sizeof(load_dsa[0])]; */ 79 u_int32_t resel[25]; 80 } __attribute__((__packed__)); 81 82 /* 83 * This decribes a command handled by the SCSI controller 84 * These are chained in either a free list or a active list 85 * We have one queue per target 86 */ 87 struct siop_cmd { 88 TAILQ_ENTRY (siop_cmd) next; 89 struct siop_softc *siop_sc; /* points back to our adapter */ 90 struct siop_target *siop_target; /* pointer to our target def */ 91 struct scsipi_xfer *xs; /* xfer from the upper level */ 92 struct siop_xfer *siop_xfer; /* tables dealing with this xfer */ 93 #define siop_tables siop_xfer->tables 94 struct siop_cbd *siop_cbdp; /* pointer to our siop_cbd */ 95 bus_addr_t dsa; /* DSA value to load */ 96 bus_dmamap_t dmamap_cmd; 97 bus_dmamap_t dmamap_data; 98 int status; 99 int flags; 100 int reselslot; /* the reselect slot used */ 101 int tag; /* tag used for tagged command queuing */ 102 }; 103 104 /* command block descriptors: an array of siop_cmd + an array of siop_xfer */ 105 106 struct siop_cbd { 107 TAILQ_ENTRY (siop_cbd) next; 108 struct siop_cmd *cmds; 109 struct siop_xfer *xfers; 110 bus_dmamap_t xferdma; /* DMA map for this block of xfers */ 111 }; 112 113 /* status defs */ 114 #define CMDST_FREE 0 /* cmd slot is free */ 115 #define CMDST_READY 1 /* cmd slot is waiting for processing */ 116 #define CMDST_ACTIVE 2 /* cmd slot is being processed */ 117 #define CMDST_DONE 3 /* cmd slot has been processed */ 118 /* flags defs */ 119 #define CMDFL_TIMEOUT 0x0001 /* cmd timed out */ 120 #define CMDFL_TAG 0x0002 /* tagged cmd */ 121 122 /* per-tag struct */ 123 struct siop_tag { 124 struct siop_cmd *active; /* active command */ 125 u_int reseloff; /* XXX */ 126 }; 127 128 /* per lun struct */ 129 struct siop_lun { 130 struct siop_tag siop_tag[SIOP_NTAG]; /* tag array */ 131 int lun_flags; /* per-lun flags, none currently */ 132 u_int reseloff; /* XXX */ 133 }; 134 135 /* per-target struct */ 136 struct siop_target { 137 int status; /* target status, see below */ 138 int flags; /* target flags, see below */ 139 u_int32_t id; /* for SELECT FROM */ 140 int period; 141 int offset; 142 struct siop_lun *siop_lun[8]; /* per-lun state */ 143 u_int reseloff; /* XXX */ 144 struct siop_lunsw *lunsw; /* XXX */ 145 }; 146 147 /* target status */ 148 #define TARST_PROBING 0 /* target is being probed */ 149 #define TARST_ASYNC 1 /* target needs sync/wide negotiation */ 150 #define TARST_WIDE_NEG 2 /* target is doing wide negotiation */ 151 #define TARST_SYNC_NEG 3 /* target is doing sync negotiation */ 152 #define TARST_OK 4 /* sync/wide agreement is valid */ 153 154 /* target flags */ 155 #define TARF_SYNC 0x01 /* target can do sync */ 156 #define TARF_WIDE 0x02 /* target can do wide */ 157 #define TARF_TAG 0x04 /* target can do tags */ 158 #define TARF_ISWIDE 0x08 /* target is wide */ 159 160 struct siop_lunsw { 161 TAILQ_ENTRY (siop_lunsw) next; 162 u_int32_t lunsw_off; /* offset of this lun sw, from sc_scriptaddr*/ 163 u_int32_t lunsw_size; /* size of this lun sw */ 164 }; 165 166 static __inline__ void siop_table_sync __P((struct siop_cmd *, int)); 167 static __inline__ void 168 siop_table_sync(siop_cmd, ops) 169 struct siop_cmd *siop_cmd; 170 int ops; 171 { 172 struct siop_softc *sc = siop_cmd->siop_sc; 173 bus_addr_t offset; 174 175 offset = siop_cmd->dsa - 176 siop_cmd->siop_cbdp->xferdma->dm_segs[0].ds_addr; 177 bus_dmamap_sync(sc->sc_dmat, siop_cmd->siop_cbdp->xferdma, offset, 178 sizeof(struct siop_xfer), ops); 179 } 180 181 void siop_common_reset __P((struct siop_softc *)); 182 void siop_setuptables __P((struct siop_cmd *)); 183 int siop_modechange __P((struct siop_softc *)); 184 185 int siop_wdtr_neg __P((struct siop_cmd *)); 186 int siop_sdtr_neg __P((struct siop_cmd *)); 187 void siop_sdtr_msg __P((struct siop_cmd *, int, int, int)); 188 void siop_wdtr_msg __P((struct siop_cmd *, int, int)); 189 void siop_update_xfer_mode __P((struct siop_softc *, int)); 190 /* actions to take at return of siop_wdtr_neg() and siop_sdtr_neg() */ 191 #define SIOP_NEG_NOP 0x0 192 #define SIOP_NEG_MSGOUT 0x1 193 #define SIOP_NEG_ACK 0x2 194 195 void siop_minphys __P((struct buf *)); 196 int siop_ioctl __P((struct scsipi_channel *, u_long, 197 caddr_t, int, struct proc *)); 198 void siop_sdp __P((struct siop_cmd *)); 199 void siop_clearfifo __P((struct siop_softc *)); 200 void siop_resetbus __P((struct siop_softc *)); 201 /* XXXX should be callbacks */ 202 void siop_add_dev __P((struct siop_softc *, int, int)); 203 void siop_del_dev __P((struct siop_softc *, int, int)); 204
Indexes created Fri Sep 26 20:09:58 GMT 2025