1 /* $OpenBSD: oosiopvar.h,v 1.2 2004/03/14 12:23:49 miod Exp $ */ 2 /* $NetBSD: oosiopvar.h,v 1.2 2003/05/03 18:11:23 wiz Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Shuichiro URATA. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #define OOSIOP_NTGT 8 /* Max targets */ 31 #define OOSIOP_NCB 32 /* Initial command buffers */ 32 #define OOSIOP_NSG (MIN(btoc(MAXPHYS) + 1, 32)) /* Max S/G operation */ 33 #define OOSIOP_MAX_XFER ctob(OOSIOP_NSG - 1) 34 35 struct oosiop_xfer { 36 /* script for scatter/gather DMA (move*nsg+jump) */ 37 u_int32_t datain_scr[(OOSIOP_NSG + 1) * 2]; 38 u_int32_t dataout_scr[(OOSIOP_NSG + 1) * 2]; 39 40 u_int8_t msgin[8]; 41 u_int8_t msgout[8]; 42 u_int8_t status; 43 u_int8_t pad[7]; 44 } __packed; 45 46 #define SCSI_OOSIOP_NOSTATUS 0xff /* device didn't report status */ 47 48 #define OOSIOP_XFEROFF(x) offsetof(struct oosiop_xfer, x) 49 #define OOSIOP_DINSCROFF OOSIOP_XFEROFF(datain_scr[0]) 50 #define OOSIOP_DOUTSCROFF OOSIOP_XFEROFF(dataout_scr[0]) 51 #define OOSIOP_MSGINOFF OOSIOP_XFEROFF(msgin[0]) 52 #define OOSIOP_MSGOUTOFF OOSIOP_XFEROFF(msgout[0]) 53 54 #define OOSIOP_XFERSCR_SYNC(sc, cb, ops) \ 55 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \ 56 OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops)) 57 #define OOSIOP_DINSCR_SYNC(sc, cb, ops) \ 58 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \ 59 OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops)) 60 #define OOSIOP_DOUTSCR_SYNC(sc, cb, ops) \ 61 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\ 62 OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops)) 63 #define OOSIOP_XFERMSG_SYNC(sc, cb, ops) \ 64 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF, \ 65 sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops)) 66 67 #define OOSIOP_SCRIPT_SYNC(sc, ops) \ 68 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma, \ 69 0, sizeof(oosiop_script), (ops)) 70 71 struct oosiop_cb { 72 TAILQ_ENTRY(oosiop_cb) chain; 73 74 struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */ 75 int flags; 76 int id; /* target scsi id */ 77 int lun; /* target lun */ 78 79 bus_dmamap_t cmddma; /* DMA map for command out */ 80 bus_dmamap_t datadma; /* DMA map for data I/O */ 81 bus_dmamap_t xferdma; /* DMA map for xfer block */ 82 83 int curdp; /* current data pointer */ 84 int savedp; /* saved data pointer */ 85 int msgoutlen; 86 87 int xsflags; /* copy of xs->flags */ 88 int datalen; /* copy of xs->datalen */ 89 int cmdlen; /* copy of xs->cmdlen */ 90 91 struct oosiop_xfer *xfer; /* DMA xfer block */ 92 }; 93 94 /* oosiop_cb flags */ 95 #define CBF_SELTOUT 0x01 /* Selection timeout */ 96 #define CBF_TIMEOUT 0x02 /* Command timeout */ 97 #define CBF_AUTOSENSE 0x04 /* Request sense due to SCSI_CHECK */ 98 99 struct oosiop_target { 100 struct oosiop_cb *nexus; 101 int flags; 102 u_int8_t scf; /* synchronous clock divisor */ 103 u_int8_t sxfer; /* synchronous period and offset */ 104 }; 105 106 /* target flags */ 107 #define TGTF_SYNCNEG 0x01 /* Trigger synchronous negotiation */ 108 #define TGTF_WAITSDTR 0x02 /* Waiting SDTR from target */ 109 110 struct oosiop_softc { 111 struct device sc_dev; 112 113 bus_space_tag_t sc_bst; /* bus space tag */ 114 bus_space_handle_t sc_bsh; /* bus space handle */ 115 116 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 117 bus_dmamap_t sc_scrdma; /* script DMA map */ 118 119 bus_addr_t sc_scrbase; /* script DMA base address */ 120 u_int32_t *sc_scr; /* ptr to script memory */ 121 122 int sc_chip; /* 700 or 700-66 */ 123 #define OOSIOP_700 0 124 #define OOSIOP_700_66 1 125 126 int sc_id; /* SCSI ID of this interface */ 127 int sc_freq; /* SCLK frequency */ 128 int sc_ccf; /* asynchronous divisor (*10) */ 129 u_int8_t sc_dcntl; 130 u_int8_t sc_minperiod; 131 132 struct oosiop_target sc_tgt[OOSIOP_NTGT]; 133 134 struct scsi_link sc_link; 135 136 /* Lists of command blocks */ 137 TAILQ_HEAD(oosiop_cb_queue, oosiop_cb) sc_free_cb, 138 sc_cbq; 139 140 struct oosiop_cb *sc_curcb; /* current command */ 141 struct oosiop_cb *sc_lastcb; /* last activated command */ 142 143 bus_addr_t sc_reselbuf; /* msgin buffer for reselection */ 144 int sc_resid; /* reselected target id */ 145 146 int sc_active; 147 int sc_nextdsp; 148 }; 149 150 #define oosiop_read_1(sc, addr) \ 151 bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr)) 152 #define oosiop_write_1(sc, addr, data) \ 153 bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data)) 154 /* XXX byte swapping should be handled by MD bus_space(9)? */ 155 #define oosiop_read_4(sc, addr) \ 156 letoh32(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr))) 157 #define oosiop_write_4(sc, addr, data) \ 158 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data)) 159 160 void oosiop_attach(struct oosiop_softc *); 161 int oosiop_intr(struct oosiop_softc *); 162