siopvar_common.h revision 1.5
1 /* $NetBSD: siopvar_common.h,v 1.5 2000/10/06 16:35:13 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 ; 44 45 /* Number of scatter/gather entries */ 46 #define SIOP_NSG (MAXPHYS/NBPG + 1) 47 48 /* 49 * This structure interfaces the SCRIPT with the driver; it describes a full 50 * transfer. It lives in the same chunk of DMA-safe memory as the script. 51 */ 52 struct siop_xfer { 53 u_int8_t msg_out[8]; /* 0 */ 54 u_int8_t msg_in[8]; /* 8 */ 55 int status; /* 16 */ 56 u_int32_t pad1; /* 20 */ 57 u_int32_t id; /* 24 */ 58 u_int32_t pad2; /* 28 */ 59 scr_table_t t_msgin; /* 32 */ 60 scr_table_t t_extmsgin; /* 40 */ 61 scr_table_t t_extmsgdata; /* 48 */ 62 scr_table_t t_msgtag; /* 56 */ 63 scr_table_t t_msgout; /* 64 */ 64 scr_table_t cmd; /* 72 */ 65 scr_table_t t_status; /* 80 */ 66 scr_table_t data[SIOP_NSG]; /* 88 */ 67 } __attribute__((__packed__)); 68 69 /* 70 * This decribes a command handled by the SCSI controller 71 * These are chained in either a free list or a active list 72 * We have one queue per target 73 */ 74 struct siop_cmd { 75 TAILQ_ENTRY (siop_cmd) next; 76 struct siop_target *siop_target; /* pointer to our target def */ 77 struct scsipi_xfer *xs; /* xfer from the upper level */ 78 struct siop_xfer *siop_table; /* tables dealing with this xfer */ 79 struct siop_cbd *siop_cbdp; /* pointer to our siop_cbd */ 80 bus_addr_t dsa; /* DSA value to load */ 81 bus_dmamap_t dmamap_cmd; 82 bus_dmamap_t dmamap_data; 83 struct scsipi_sense rs_cmd; /* request sense command buffer */ 84 int status; 85 int flags; 86 int reselslot; /* the reselect slot used */ 87 }; 88 89 /* command block descriptors: an array of siop_cmd + an array of siop_xfer */ 90 91 struct siop_cbd { 92 TAILQ_ENTRY (siop_cbd) next; 93 struct siop_cmd *cmds; 94 struct siop_xfer *xfers; 95 bus_dmamap_t xferdma; /* DMA map for this block of xfers */ 96 }; 97 98 /* status defs */ 99 #define CMDST_FREE 0 /* cmd slot is free */ 100 #define CMDST_READY 1 /* cmd slot is waiting for processing */ 101 #define CMDST_ACTIVE 2 /* cmd slot is being processed */ 102 #define CMDST_SENSE 3 /* cmd slot is being requesting sense */ 103 #define CMDST_SENSE_ACTIVE 4 /* request sense active */ 104 #define CMDST_SENSE_DONE 5 /* request sense done */ 105 #define CMDST_DONE 6 /* cmd slot has been processed */ 106 /* flags defs */ 107 #define CMDFL_TIMEOUT 0x0001 /* cmd timed out */ 108 109 /* per-target struct */ 110 struct siop_target { 111 int status; /* target status, see below */ 112 int flags; /* target flags, see below */ 113 u_int32_t id; /* for SELECT FROM */ 114 struct cmd_list active_list[8]; /* per-lun active cmds */ 115 struct siop_softc *siop_sc; /* points back to our adapter */ 116 }; 117 118 /* target status */ 119 #define TARST_PROBING 0 /* target is being probed */ 120 #define TARST_ASYNC 1 /* target needs sync/wide negotiation */ 121 #define TARST_WIDE_NEG 2 /* target is doing wide negotiation */ 122 #define TARST_SYNC_NEG 3 /* target is doing sync negotiation */ 123 #define TARST_OK 4 /* sync/wide agreement is valid */ 124 125 /* target flags */ 126 #define TARF_SYNC 0x00 /* target is sync */ 127 #define TARF_WIDE 0x01 /* target is wide */ 128 129 void siop_common_reset __P((struct siop_softc *)); 130 int siop_modechange __P((struct siop_softc *)); 131 132 int siop_wdtr_neg __P((struct siop_cmd *siop_cmd)); 133 int siop_sdtr_neg __P((struct siop_cmd *siop_cmd)); 134 /* actions to take at return of siop_wdtr_neg() and siop_sdtr_neg() */ 135 #define SIOP_NEG_NOP 0x0 136 #define SIOP_NEG_MSGOUT 0x1 137 #define SIOP_NEG_ACK 0x2 138 139 void siop_minphys __P((struct buf *)); 140 int siop_ioctl __P((struct scsipi_link *, u_long, 141 caddr_t, int, struct proc *)); 142 void siop_sdp __P((struct siop_cmd *)); 143 void siop_clearfifo __P((struct siop_softc *)); 144 void siop_resetbus __P((struct siop_softc *)); 145
Indexes created Fri Sep 26 08:10:20 GMT 2025