icpsp.c revision 1.23.4.1
1 /* $NetBSD: icpsp.c,v 1.23.4.1 2011/03/05 20:53:16 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: icpsp.c,v 1.23.4.1 2011/03/05 20:53:16 rmind Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 #include <sys/queue.h> 40 #include <sys/proc.h> 41 #include <sys/buf.h> 42 #include <sys/endian.h> 43 #include <sys/malloc.h> 44 #include <sys/scsiio.h> 45 46 #include <sys/bswap.h> 47 #include <sys/bus.h> 48 49 #include <dev/scsipi/scsi_all.h> 50 #include <dev/scsipi/scsi_disk.h> 51 #include <dev/scsipi/scsipi_all.h> 52 #include <dev/scsipi/scsiconf.h> 53 #include <dev/scsipi/scsi_message.h> 54 55 #include <dev/ic/icpreg.h> 56 #include <dev/ic/icpvar.h> 57 58 struct icpsp_softc { 59 struct device sc_dv; 60 struct scsipi_adapter sc_adapter; 61 struct scsipi_channel sc_channel; 62 int sc_busno; 63 int sc_openings; 64 }; 65 66 void icpsp_attach(device_t, device_t, void *); 67 void icpsp_intr(struct icp_ccb *); 68 int icpsp_match(device_t, cfdata_t, void *); 69 void icpsp_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 70 void *); 71 72 void icpsp_adjqparam(device_t, int); 73 74 CFATTACH_DECL(icpsp, sizeof(struct icpsp_softc), 75 icpsp_match, icpsp_attach, NULL, NULL); 76 77 static const struct icp_servicecb icpsp_servicecb = { 78 icpsp_adjqparam, 79 }; 80 81 int 82 icpsp_match(device_t parent, cfdata_t match, 83 void *aux) 84 { 85 struct icp_attach_args *icpa; 86 87 icpa = aux; 88 89 return (icpa->icpa_unit >= ICPA_UNIT_SCSI); 90 } 91 92 void 93 icpsp_attach(device_t parent, device_t self, void *aux) 94 { 95 struct icp_attach_args *icpa; 96 struct icpsp_softc *sc; 97 struct icp_softc *icp; 98 99 icpa = (struct icp_attach_args *)aux; 100 sc = (struct icpsp_softc *)self; 101 icp = (struct icp_softc *)parent; 102 103 sc->sc_busno = icpa->icpa_unit - ICPA_UNIT_SCSI; 104 sc->sc_openings = icp->icp_openings; 105 printf(": physical SCSI channel %d\n", sc->sc_busno); 106 107 icp_register_servicecb(icp, icpa->icpa_unit, &icpsp_servicecb); 108 109 sc->sc_adapter.adapt_dev = &sc->sc_dv; 110 sc->sc_adapter.adapt_nchannels = 1; 111 sc->sc_adapter.adapt_openings = icp->icp_openings; 112 sc->sc_adapter.adapt_max_periph = icp->icp_openings; 113 sc->sc_adapter.adapt_minphys = minphys; 114 sc->sc_adapter.adapt_request = icpsp_scsipi_request; 115 116 sc->sc_channel.chan_adapter = &sc->sc_adapter; 117 sc->sc_channel.chan_bustype = &scsi_bustype; 118 sc->sc_channel.chan_channel = 0; 119 sc->sc_channel.chan_ntargets = ((icp->icp_class & ICP_FC) != 0 ? 120 127 : 16); /* XXX bogus check */ 121 sc->sc_channel.chan_nluns = 8; 122 sc->sc_channel.chan_id = icp->icp_bus_id[sc->sc_busno]; 123 sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE; 124 125 config_found(self, &sc->sc_channel, scsiprint); 126 } 127 128 void 129 icpsp_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 130 void *arg) 131 { 132 struct scsipi_xfer *xs; 133 struct scsipi_periph *periph; 134 struct icpsp_softc *sc; 135 struct icp_rawcmd *rc; 136 struct icp_softc *icp; 137 struct icp_ccb *ic; 138 int rv, flags, s, soff; 139 140 sc = (void *)chan->chan_adapter->adapt_dev; 141 icp = (struct icp_softc *)device_parent(&sc->sc_dv); 142 143 switch (req) { 144 case ADAPTER_REQ_RUN_XFER: 145 xs = arg; 146 periph = xs->xs_periph; 147 flags = xs->xs_control; 148 149 SC_DEBUG(periph, SCSIPI_DB2, ("icpsp_scsi_request run_xfer\n")); 150 151 if ((flags & XS_CTL_RESET) != 0) { 152 /* XXX Unimplemented. */ 153 xs->error = XS_DRIVER_STUFFUP; 154 scsipi_done(xs); 155 return; 156 } 157 158 #if defined(ICP_DEBUG) || defined(SCSIDEBUG) 159 if (xs->cmdlen > sizeof(rc->rc_cdb)) 160 panic("%s: CDB too large", device_xname(&sc->sc_dv)); 161 #endif 162 163 /* 164 * Allocate a CCB. 165 */ 166 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL)) { 167 xs->error = XS_RESOURCE_SHORTAGE; 168 scsipi_done(xs); 169 return; 170 } 171 rc = &ic->ic_cmd.cmd_packet.rc; 172 ic->ic_sg = rc->rc_sg; 173 ic->ic_service = ICP_SCSIRAWSERVICE; 174 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 175 sizeof(struct scsi_sense_data); 176 177 /* 178 * Build the command. We don't need to actively prevent 179 * access to array components, since the controller kindly 180 * takes care of that for us. 181 */ 182 ic->ic_cmd.cmd_opcode = htole16(ICP_WRITE); 183 memcpy(rc->rc_cdb, xs->cmd, xs->cmdlen); 184 185 rc->rc_padding0 = 0; 186 rc->rc_direction = htole32((flags & XS_CTL_DATA_IN) != 0 ? 187 ICP_DATA_IN : ICP_DATA_OUT); 188 rc->rc_mdisc_time = 0; 189 rc->rc_mcon_time = 0; 190 rc->rc_clen = htole32(xs->cmdlen); 191 rc->rc_target = periph->periph_target; 192 rc->rc_lun = periph->periph_lun; 193 rc->rc_bus = sc->sc_busno; 194 rc->rc_priority = 0; 195 rc->rc_sense_len = htole32(sizeof(xs->sense.scsi_sense)); 196 rc->rc_sense_addr = 197 htole32(soff + icp->icp_scr_seg[0].ds_addr); 198 rc->rc_padding1 = 0; 199 200 if (xs->datalen != 0) { 201 rv = icp_ccb_map(icp, ic, xs->data, xs->datalen, 202 (flags & XS_CTL_DATA_IN) != 0 ? IC_XFER_IN : 203 IC_XFER_OUT); 204 if (rv != 0) { 205 icp_ccb_free(icp, ic); 206 xs->error = XS_DRIVER_STUFFUP; 207 scsipi_done(xs); 208 return; 209 } 210 211 rc->rc_nsgent = htole32(ic->ic_nsgent); 212 rc->rc_sdata = ~0; 213 rc->rc_sdlen = htole32(xs->datalen); 214 } else { 215 rc->rc_nsgent = 0; 216 rc->rc_sdata = 0; 217 rc->rc_sdlen = 0; 218 } 219 220 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd + 221 ic->ic_nsgent * sizeof(*ic->ic_sg); 222 223 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 224 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_PREREAD); 225 226 /* 227 * Fire it off to the controller. 228 */ 229 ic->ic_intr = icpsp_intr; 230 ic->ic_context = xs; 231 ic->ic_dv = &sc->sc_dv; 232 233 if ((flags & XS_CTL_POLL) != 0) { 234 s = splbio(); 235 rv = icp_ccb_poll(icp, ic, xs->timeout); 236 if (rv != 0) { 237 if (xs->datalen != 0) 238 icp_ccb_unmap(icp, ic); 239 icp_ccb_free(icp, ic); 240 xs->error = XS_TIMEOUT; 241 scsipi_done(xs); 242 243 /* 244 * XXX We're now in a bad way, because we 245 * don't know how to abort the command. 246 * That shouldn't matter too much, since 247 * polled commands won't be used while the 248 * system is running. 249 */ 250 } 251 splx(s); 252 } else 253 icp_ccb_enqueue(icp, ic); 254 255 break; 256 257 case ADAPTER_REQ_GROW_RESOURCES: 258 case ADAPTER_REQ_SET_XFER_MODE: 259 /* 260 * Neither of these cases are supported, and neither of them 261 * is particulatly relevant, since we have an abstract view 262 * of the bus; the controller takes care of all the nitty 263 * gritty. 264 */ 265 break; 266 } 267 } 268 269 void 270 icpsp_intr(struct icp_ccb *ic) 271 { 272 struct scsipi_xfer *xs; 273 struct icpsp_softc *sc; 274 struct icp_softc *icp; 275 int soff; 276 277 sc = (struct icpsp_softc *)ic->ic_dv; 278 xs = (struct scsipi_xfer *)ic->ic_context; 279 icp = (struct icp_softc *)device_parent(ic->ic_dv); 280 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 281 sizeof(struct scsi_sense_data); 282 283 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("icpsp_intr\n")); 284 285 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 286 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_POSTREAD); 287 288 if (ic->ic_status == ICP_S_OK) { 289 xs->status = SCSI_OK; 290 xs->resid = 0; 291 } else if (ic->ic_status != ICP_S_RAW_SCSI || icp->icp_info >= 0x100) { 292 xs->error = XS_SELTIMEOUT; 293 xs->resid = xs->datalen; 294 } else { 295 xs->status = icp->icp_info; 296 297 switch (xs->status) { 298 case SCSI_OK: 299 #ifdef DIAGNOSTIC 300 printf("%s: error return (%d), but SCSI_OK?\n", 301 device_xname(&sc->sc_dv), icp->icp_info); 302 #endif 303 xs->resid = 0; 304 break; 305 case SCSI_CHECK: 306 memcpy(&xs->sense.scsi_sense, 307 (char *)icp->icp_scr + soff, 308 sizeof(xs->sense.scsi_sense)); 309 xs->error = XS_SENSE; 310 /* FALLTHROUGH */ 311 default: 312 /* 313 * XXX Don't know how to get residual count. 314 */ 315 xs->resid = xs->datalen; 316 break; 317 } 318 } 319 320 if (xs->datalen != 0) 321 icp_ccb_unmap(icp, ic); 322 icp_ccb_free(icp, ic); 323 scsipi_done(xs); 324 } 325 326 void 327 icpsp_adjqparam(device_t dv, int openings) 328 { 329 struct icpsp_softc *sc = (struct icpsp_softc *) dv; 330 int s; 331 332 s = splbio(); 333 sc->sc_adapter.adapt_openings += openings - sc->sc_openings; 334 sc->sc_openings = openings; 335 splx(s); 336 } 337
Indexes created Sun Oct 19 02:09:48 GMT 2025