isp_netbsd.c revision 1.7
1 /* $NetBSD: isp_netbsd.c,v 1.7 1998/12/05 19:48:23 mjacob Exp $ */ 2 /* isp_netbsd.c 1.15 */ 3 /* 4 * Platform (NetBSD) dependent common attachment code for Qlogic adapters. 5 * 6 *--------------------------------------- 7 * Copyright (c) 1997, 1998 by Matthew Jacob 8 * NASA/Ames Research Center 9 * All rights reserved. 10 *--------------------------------------- 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice immediately at the beginning of the file, without modification, 17 * this list of conditions, and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * The author may be reached via electronic communications at 37 * 38 * mjacob (at) nas.nasa.gov 39 * mjacob (at) feral.com 40 * 41 * or, via United States Postal Address 42 * 43 * Matthew Jacob 44 * Feral Software 45 * 2339 3rd Street 46 * Suite 24 47 * San Francisco, CA, 94107 48 */ 49 50 #include <dev/ic/isp_netbsd.h> 51 52 static void ispminphys __P((struct buf *)); 53 static int32_t ispcmd __P((ISP_SCSI_XFER_T *)); 54 55 static struct scsipi_device isp_dev = { NULL, NULL, NULL, NULL }; 56 static int isp_poll __P((struct ispsoftc *, ISP_SCSI_XFER_T *, int)); 57 58 /* 59 * Complete attachment of hardware, include subdevices. 60 */ 61 void 62 isp_attach(isp) 63 struct ispsoftc *isp; 64 { 65 66 isp->isp_osinfo._adapter.scsipi_cmd = ispcmd; 67 isp->isp_osinfo._adapter.scsipi_minphys = ispminphys; 68 69 isp->isp_state = ISP_RUNSTATE; 70 isp->isp_osinfo._link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 71 isp->isp_osinfo._link.adapter_softc = isp; 72 isp->isp_osinfo._link.device = &isp_dev; 73 isp->isp_osinfo._link.adapter = &isp->isp_osinfo._adapter; 74 75 if (isp->isp_type & ISP_HA_FC) { 76 isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_FC_TARG-1; 77 #ifdef SCCLUN 78 /* 79 * 16 bits worth, but let's be reasonable.. 80 */ 81 isp->isp_osinfo._link.scsipi_scsi.max_lun = 255; 82 #else 83 isp->isp_osinfo._link.scsipi_scsi.max_lun = 15; 84 #endif 85 isp->isp_osinfo._link.openings = 86 RQUEST_QUEUE_LEN / (MAX_FC_TARG-1); 87 isp->isp_osinfo._link.scsipi_scsi.adapter_target = 88 ((fcparam *)isp->isp_param)->isp_loopid; 89 } else { 90 isp->isp_osinfo._link.openings = 91 RQUEST_QUEUE_LEN / (MAX_TARGETS-1); 92 isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_TARGETS-1; 93 if (isp->isp_bustype == ISP_BT_SBUS) { 94 isp->isp_osinfo._link.scsipi_scsi.max_lun = 7; 95 } else { 96 /* 97 * Too much target breakage at present. 98 */ 99 #if 0 100 if (isp->isp_fwrev >= ISP_FW_REV(7,55)) 101 isp->isp_osinfo._link.scsipi_scsi.max_lun = 31; 102 else 103 #endif 104 isp->isp_osinfo._link.scsipi_scsi.max_lun = 7; 105 } 106 isp->isp_osinfo._link.scsipi_scsi.adapter_target = 107 ((sdparam *)isp->isp_param)->isp_initiator_id; 108 } 109 if (isp->isp_osinfo._link.openings < 2) 110 isp->isp_osinfo._link.openings = 2; 111 isp->isp_osinfo._link.type = BUS_SCSI; 112 config_found((void *)isp, &isp->isp_osinfo._link, scsiprint); 113 } 114 115 /* 116 * minphys our xfers 117 * 118 * Unfortunately, the buffer pointer describes the target device- not the 119 * adapter device, so we can't use the pointer to find out what kind of 120 * adapter we are and adjust accordingly. 121 */ 122 123 static void 124 ispminphys(bp) 125 struct buf *bp; 126 { 127 /* 128 * XX: Only the 1020 has a 24 bit limit. 129 */ 130 if (bp->b_bcount >= (1 << 24)) { 131 bp->b_bcount = (1 << 24); 132 } 133 minphys(bp); 134 } 135 136 static int 137 ispcmd(xs) 138 ISP_SCSI_XFER_T *xs; 139 { 140 struct ispsoftc *isp; 141 int result; 142 ISP_LOCKVAL_DECL; 143 144 isp = XS_ISP(xs); 145 ISP_LOCK(isp); 146 /* 147 * This is less efficient than I would like in that the 148 * majority of cases will have to do some pointer deferences 149 * to find out that things don't need to be updated. 150 */ 151 if ((xs->flags & SCSI_AUTOCONF) == 0 && (isp->isp_type & ISP_HA_SCSI)) { 152 sdparam *sdp = isp->isp_param; 153 if (sdp->isp_devparam[XS_TGT(xs)].dev_flags != 154 sdp->isp_devparam[XS_TGT(xs)].cur_dflags) { 155 u_int16_t f = DPARM_WIDE|DPARM_SYNC|DPARM_TQING; 156 if (xs->sc_link->quirks & SDEV_NOSYNC) 157 f &= ~DPARM_SYNC; 158 if (xs->sc_link->quirks & SDEV_NOWIDE) 159 f &= ~DPARM_WIDE; 160 if (xs->sc_link->quirks & SDEV_NOTAG) 161 f &= ~DPARM_TQING; 162 sdp->isp_devparam[XS_TGT(xs)].dev_flags &= 163 ~(DPARM_WIDE|DPARM_SYNC|DPARM_TQING); 164 sdp->isp_devparam[XS_TGT(xs)].dev_flags |= f; 165 sdp->isp_devparam[XS_TGT(xs)].dev_update = 1; 166 isp->isp_update = 1; 167 } 168 } 169 result = ispscsicmd(xs); 170 if (result != CMD_QUEUED || (xs->flags & SCSI_POLL) == 0) { 171 ISP_UNLOCK(isp); 172 return (result); 173 } 174 175 /* 176 * If we can't use interrupts, poll on completion. 177 */ 178 if (isp_poll(isp, xs, XS_TIME(xs))) { 179 /* 180 * If no other error occurred but we didn't finish, 181 * something bad happened. 182 */ 183 if (XS_IS_CMD_DONE(xs) == 0) { 184 isp->isp_nactive--; 185 if (isp->isp_nactive < 0) 186 isp->isp_nactive = 0; 187 if (XS_NOERR(xs)) { 188 isp_lostcmd(isp, xs); 189 XS_SETERR(xs, HBA_BOTCH); 190 } 191 } 192 } 193 ISP_UNLOCK(isp); 194 return (CMD_COMPLETE); 195 } 196 197 static int 198 isp_poll(isp, xs, mswait) 199 struct ispsoftc *isp; 200 ISP_SCSI_XFER_T *xs; 201 int mswait; 202 { 203 204 while (mswait) { 205 /* Try the interrupt handling routine */ 206 (void)isp_intr((void *)isp); 207 208 /* See if the xs is now done */ 209 if (XS_IS_CMD_DONE(xs)) { 210 return (0); 211 } 212 SYS_DELAY(1000); /* wait one millisecond */ 213 mswait--; 214 } 215 return (1); 216 } 217
Indexes created Tue Sep 23 07:09:52 GMT 2025