1 /* $NetBSD: icpsp.c,v 1.29 2024/01/16 21:08:52 andvar 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 1.29 2024/01/16 21:08:52 andvar 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 device_t 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_NEW(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 = device_private(self); 101 icp = device_private(parent); 102 103 sc->sc_dv = self; 104 sc->sc_busno = icpa->icpa_unit - ICPA_UNIT_SCSI; 105 sc->sc_openings = icp->icp_openings; 106 printf(": physical SCSI channel %d\n", sc->sc_busno); 107 108 icp_register_servicecb(icp, icpa->icpa_unit, &icpsp_servicecb); 109 110 sc->sc_adapter.adapt_dev = sc->sc_dv; 111 sc->sc_adapter.adapt_nchannels = 1; 112 sc->sc_adapter.adapt_openings = icp->icp_openings; 113 sc->sc_adapter.adapt_max_periph = icp->icp_openings; 114 sc->sc_adapter.adapt_minphys = minphys; 115 sc->sc_adapter.adapt_request = icpsp_scsipi_request; 116 117 sc->sc_channel.chan_adapter = &sc->sc_adapter; 118 sc->sc_channel.chan_bustype = &scsi_bustype; 119 sc->sc_channel.chan_channel = 0; 120 sc->sc_channel.chan_ntargets = ((icp->icp_class & ICP_FC) != 0 ? 121 127 : 16); /* XXX bogus check */ 122 sc->sc_channel.chan_nluns = 8; 123 sc->sc_channel.chan_id = icp->icp_bus_id[sc->sc_busno]; 124 sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE; 125 126 config_found(self, &sc->sc_channel, scsiprint, CFARGS_NONE); 127 } 128 129 void 130 icpsp_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 131 void *arg) 132 { 133 struct scsipi_xfer *xs; 134 struct scsipi_periph *periph; 135 struct icpsp_softc *sc; 136 struct icp_rawcmd *rc; 137 struct icp_softc *icp; 138 struct icp_ccb *ic; 139 int rv, flags, s, soff; 140 141 sc = device_private(chan->chan_adapter->adapt_dev); 142 icp = device_private(device_parent(sc->sc_dv)); 143 144 switch (req) { 145 case ADAPTER_REQ_RUN_XFER: 146 xs = arg; 147 periph = xs->xs_periph; 148 flags = xs->xs_control; 149 150 SC_DEBUG(periph, SCSIPI_DB2, ("icpsp_scsi_request run_xfer\n")); 151 152 if ((flags & XS_CTL_RESET) != 0) { 153 /* XXX Unimplemented. */ 154 xs->error = XS_DRIVER_STUFFUP; 155 scsipi_done(xs); 156 return; 157 } 158 159 #if defined(ICP_DEBUG) || defined(SCSIDEBUG) 160 if (xs->cmdlen > sizeof(rc->rc_cdb)) 161 panic("%s: CDB too large", device_xname(sc->sc_dv)); 162 #endif 163 164 /* 165 * Allocate a CCB. 166 */ 167 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL)) { 168 xs->error = XS_RESOURCE_SHORTAGE; 169 scsipi_done(xs); 170 return; 171 } 172 rc = &ic->ic_cmd.cmd_packet.rc; 173 ic->ic_sg = rc->rc_sg; 174 ic->ic_service = ICP_SCSIRAWSERVICE; 175 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 176 sizeof(struct scsi_sense_data); 177 178 /* 179 * Build the command. We don't need to actively prevent 180 * access to array components, since the controller kindly 181 * takes care of that for us. 182 */ 183 ic->ic_cmd.cmd_opcode = htole16(ICP_WRITE); 184 memcpy(rc->rc_cdb, xs->cmd, xs->cmdlen); 185 186 rc->rc_padding0 = 0; 187 rc->rc_direction = htole32((flags & XS_CTL_DATA_IN) != 0 ? 188 ICP_DATA_IN : ICP_DATA_OUT); 189 rc->rc_mdisc_time = 0; 190 rc->rc_mcon_time = 0; 191 rc->rc_clen = htole32(xs->cmdlen); 192 rc->rc_target = periph->periph_target; 193 rc->rc_lun = periph->periph_lun; 194 rc->rc_bus = sc->sc_busno; 195 rc->rc_priority = 0; 196 rc->rc_sense_len = htole32(sizeof(xs->sense.scsi_sense)); 197 rc->rc_sense_addr = 198 htole32(soff + icp->icp_scr_seg[0].ds_addr); 199 rc->rc_padding1 = 0; 200 201 if (xs->datalen != 0) { 202 rv = icp_ccb_map(icp, ic, xs->data, xs->datalen, 203 (flags & XS_CTL_DATA_IN) != 0 ? IC_XFER_IN : 204 IC_XFER_OUT); 205 if (rv != 0) { 206 icp_ccb_free(icp, ic); 207 xs->error = XS_DRIVER_STUFFUP; 208 scsipi_done(xs); 209 return; 210 } 211 212 rc->rc_nsgent = htole32(ic->ic_nsgent); 213 rc->rc_sdata = ~0; 214 rc->rc_sdlen = htole32(xs->datalen); 215 } else { 216 rc->rc_nsgent = 0; 217 rc->rc_sdata = 0; 218 rc->rc_sdlen = 0; 219 } 220 221 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd + 222 ic->ic_nsgent * sizeof(*ic->ic_sg); 223 224 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 225 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_PREREAD); 226 227 /* 228 * Fire it off to the controller. 229 */ 230 ic->ic_intr = icpsp_intr; 231 ic->ic_context = xs; 232 ic->ic_dv = sc->sc_dv; 233 234 if ((flags & XS_CTL_POLL) != 0) { 235 s = splbio(); 236 rv = icp_ccb_poll(icp, ic, xs->timeout); 237 if (rv != 0) { 238 if (xs->datalen != 0) 239 icp_ccb_unmap(icp, ic); 240 icp_ccb_free(icp, ic); 241 xs->error = XS_TIMEOUT; 242 scsipi_done(xs); 243 244 /* 245 * XXX We're now in a bad way, because we 246 * don't know how to abort the command. 247 * That shouldn't matter too much, since 248 * polled commands won't be used while the 249 * system is running. 250 */ 251 } 252 splx(s); 253 } else 254 icp_ccb_enqueue(icp, ic); 255 256 break; 257 258 case ADAPTER_REQ_GROW_RESOURCES: 259 case ADAPTER_REQ_SET_XFER_MODE: 260 /* 261 * Neither of these cases are supported, and neither of them 262 * is particularly relevant, since we have an abstract view 263 * of the bus; the controller takes care of all the nitty 264 * gritty. 265 */ 266 break; 267 } 268 } 269 270 void 271 icpsp_intr(struct icp_ccb *ic) 272 { 273 struct scsipi_xfer *xs; 274 struct icp_softc *icp; 275 int soff; 276 277 #ifdef DIAGNOSTIC 278 struct icpsp_softc *sc = device_private(ic->ic_dv); 279 #endif 280 xs = ic->ic_context; 281 icp = device_private(device_parent(ic->ic_dv)); 282 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 283 sizeof(struct scsi_sense_data); 284 285 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("icpsp_intr\n")); 286 287 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 288 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_POSTREAD); 289 290 if (ic->ic_status == ICP_S_OK) { 291 xs->status = SCSI_OK; 292 xs->resid = 0; 293 } else if (ic->ic_status != ICP_S_RAW_SCSI || icp->icp_info >= 0x100) { 294 xs->error = XS_SELTIMEOUT; 295 xs->resid = xs->datalen; 296 } else { 297 xs->status = icp->icp_info; 298 299 switch (xs->status) { 300 case SCSI_OK: 301 #ifdef DIAGNOSTIC 302 printf("%s: error return (%d), but SCSI_OK?\n", 303 device_xname(sc->sc_dv), icp->icp_info); 304 #endif 305 xs->resid = 0; 306 break; 307 case SCSI_CHECK: 308 memcpy(&xs->sense.scsi_sense, 309 (char *)icp->icp_scr + soff, 310 sizeof(xs->sense.scsi_sense)); 311 xs->error = XS_SENSE; 312 /* FALLTHROUGH */ 313 default: 314 /* 315 * XXX Don't know how to get residual count. 316 */ 317 xs->resid = xs->datalen; 318 break; 319 } 320 } 321 322 if (xs->datalen != 0) 323 icp_ccb_unmap(icp, ic); 324 icp_ccb_free(icp, ic); 325 scsipi_done(xs); 326 } 327 328 void 329 icpsp_adjqparam(device_t self, int openings) 330 { 331 struct icpsp_softc *sc = device_private(self); 332 int s; 333 334 s = splbio(); 335 sc->sc_adapter.adapt_openings += openings - sc->sc_openings; 336 sc->sc_openings = openings; 337 splx(s); 338 } 339
Indexes created Wed Oct 01 19:09:53 GMT 2025