1 /* $NetBSD: icpsp.c,v 1.14 2006/03/25 23:10:12 thorpej 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: icpsp.c,v 1.14 2006/03/25 23:10:12 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <sys/queue.h> 47 #include <sys/proc.h> 48 #include <sys/buf.h> 49 #include <sys/endian.h> 50 #include <sys/malloc.h> 51 #include <sys/scsiio.h> 52 #include <sys/lock.h> 53 54 #include <sys/bswap.h> 55 #include <machine/bus.h> 56 57 #include <uvm/uvm_extern.h> 58 59 #include <dev/scsipi/scsi_all.h> 60 #include <dev/scsipi/scsi_disk.h> 61 #include <dev/scsipi/scsipi_all.h> 62 #include <dev/scsipi/scsiconf.h> 63 #include <dev/scsipi/scsi_message.h> 64 65 #include <dev/ic/icpreg.h> 66 #include <dev/ic/icpvar.h> 67 68 struct icpsp_softc { 69 struct device sc_dv; 70 struct scsipi_adapter sc_adapter; 71 struct scsipi_channel sc_channel; 72 int sc_busno; 73 int sc_openings; 74 }; 75 76 void icpsp_attach(struct device *, struct device *, void *); 77 void icpsp_intr(struct icp_ccb *); 78 int icpsp_match(struct device *, struct cfdata *, void *); 79 void icpsp_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 80 void *); 81 82 void icpsp_adjqparam(struct device *, int); 83 84 CFATTACH_DECL(icpsp, sizeof(struct icpsp_softc), 85 icpsp_match, icpsp_attach, NULL, NULL); 86 87 static const struct icp_servicecb icpsp_servicecb = { 88 icpsp_adjqparam, 89 }; 90 91 int 92 icpsp_match(struct device *parent, struct cfdata *match, void *aux) 93 { 94 struct icp_attach_args *icpa; 95 96 icpa = aux; 97 98 return (icpa->icpa_unit >= ICPA_UNIT_SCSI); 99 } 100 101 void 102 icpsp_attach(struct device *parent, struct device *self, void *aux) 103 { 104 struct icp_attach_args *icpa; 105 struct icpsp_softc *sc; 106 struct icp_softc *icp; 107 108 icpa = (struct icp_attach_args *)aux; 109 sc = (struct icpsp_softc *)self; 110 icp = (struct icp_softc *)parent; 111 112 sc->sc_busno = icpa->icpa_unit - ICPA_UNIT_SCSI; 113 sc->sc_openings = icp->icp_openings; 114 printf(": physical SCSI channel %d\n", sc->sc_busno); 115 116 icp_register_servicecb(icp, icpa->icpa_unit, &icpsp_servicecb); 117 118 sc->sc_adapter.adapt_dev = &sc->sc_dv; 119 sc->sc_adapter.adapt_nchannels = 1; 120 sc->sc_adapter.adapt_openings = icp->icp_openings; 121 sc->sc_adapter.adapt_max_periph = icp->icp_openings; 122 sc->sc_adapter.adapt_minphys = minphys; 123 sc->sc_adapter.adapt_request = icpsp_scsipi_request; 124 125 sc->sc_channel.chan_adapter = &sc->sc_adapter; 126 sc->sc_channel.chan_bustype = &scsi_bustype; 127 sc->sc_channel.chan_channel = 0; 128 sc->sc_channel.chan_ntargets = ((icp->icp_class & ICP_FC) != 0 ? 129 127 : 16); /* XXX bogus check */ 130 sc->sc_channel.chan_nluns = 8; 131 sc->sc_channel.chan_id = icp->icp_bus_id[sc->sc_busno]; 132 sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE; 133 134 config_found(self, &sc->sc_channel, scsiprint); 135 } 136 137 void 138 icpsp_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 139 void *arg) 140 { 141 struct scsipi_xfer *xs; 142 struct scsipi_periph *periph; 143 struct icpsp_softc *sc; 144 struct icp_rawcmd *rc; 145 struct icp_softc *icp; 146 struct icp_ccb *ic; 147 int rv, flags, s, soff; 148 149 sc = (void *)chan->chan_adapter->adapt_dev; 150 icp = (struct icp_softc *)device_parent(&sc->sc_dv); 151 152 switch (req) { 153 case ADAPTER_REQ_RUN_XFER: 154 xs = arg; 155 periph = xs->xs_periph; 156 flags = xs->xs_control; 157 158 SC_DEBUG(periph, SCSIPI_DB2, ("icpsp_scsi_request run_xfer\n")); 159 160 if ((flags & XS_CTL_RESET) != 0) { 161 /* XXX Unimplemented. */ 162 xs->error = XS_DRIVER_STUFFUP; 163 scsipi_done(xs); 164 return; 165 } 166 167 #if defined(ICP_DEBUG) || defined(SCSIDEBUG) 168 if (xs->cmdlen > sizeof(rc->rc_cdb)) 169 panic("%s: CDB too large", sc->sc_dv.dv_xname); 170 #endif 171 172 /* 173 * Allocate a CCB. 174 */ 175 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL)) { 176 xs->error = XS_RESOURCE_SHORTAGE; 177 scsipi_done(xs); 178 return; 179 } 180 rc = &ic->ic_cmd.cmd_packet.rc; 181 ic->ic_sg = rc->rc_sg; 182 ic->ic_service = ICP_SCSIRAWSERVICE; 183 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 184 sizeof(struct scsi_sense_data); 185 186 /* 187 * Build the command. We don't need to actively prevent 188 * access to array components, since the controller kindly 189 * takes care of that for us. 190 */ 191 ic->ic_cmd.cmd_opcode = htole16(ICP_WRITE); 192 memcpy(rc->rc_cdb, xs->cmd, xs->cmdlen); 193 194 rc->rc_padding0 = 0; 195 rc->rc_direction = htole32((flags & XS_CTL_DATA_IN) != 0 ? 196 ICP_DATA_IN : ICP_DATA_OUT); 197 rc->rc_mdisc_time = 0; 198 rc->rc_mcon_time = 0; 199 rc->rc_clen = htole32(xs->cmdlen); 200 rc->rc_target = periph->periph_target; 201 rc->rc_lun = periph->periph_lun; 202 rc->rc_bus = sc->sc_busno; 203 rc->rc_priority = 0; 204 rc->rc_sense_len = htole32(sizeof(xs->sense.scsi_sense)); 205 rc->rc_sense_addr = 206 htole32(soff + icp->icp_scr_seg[0].ds_addr); 207 rc->rc_padding1 = 0; 208 209 if (xs->datalen != 0) { 210 rv = icp_ccb_map(icp, ic, xs->data, xs->datalen, 211 (flags & XS_CTL_DATA_IN) != 0 ? IC_XFER_IN : 212 IC_XFER_OUT); 213 if (rv != 0) { 214 icp_ccb_free(icp, ic); 215 xs->error = XS_DRIVER_STUFFUP; 216 scsipi_done(xs); 217 return; 218 } 219 220 rc->rc_nsgent = htole32(ic->ic_nsgent); 221 rc->rc_sdata = ~0; 222 rc->rc_sdlen = htole32(xs->datalen); 223 } else { 224 rc->rc_nsgent = 0; 225 rc->rc_sdata = 0; 226 rc->rc_sdlen = 0; 227 } 228 229 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd + 230 ic->ic_nsgent * sizeof(*ic->ic_sg); 231 232 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 233 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_PREREAD); 234 235 /* 236 * Fire it off to the controller. 237 */ 238 ic->ic_intr = icpsp_intr; 239 ic->ic_context = xs; 240 ic->ic_dv = &sc->sc_dv; 241 242 if ((flags & XS_CTL_POLL) != 0) { 243 s = splbio(); 244 rv = icp_ccb_poll(icp, ic, xs->timeout); 245 if (rv != 0) { 246 if (xs->datalen != 0) 247 icp_ccb_unmap(icp, ic); 248 icp_ccb_free(icp, ic); 249 xs->error = XS_TIMEOUT; 250 scsipi_done(xs); 251 252 /* 253 * XXX We're now in a bad way, because we 254 * don't know how to abort the command. 255 * That shouldn't matter too much, since 256 * polled commands won't be used while the 257 * system is running. 258 */ 259 } 260 splx(s); 261 } else 262 icp_ccb_enqueue(icp, ic); 263 264 break; 265 266 case ADAPTER_REQ_GROW_RESOURCES: 267 case ADAPTER_REQ_SET_XFER_MODE: 268 /* 269 * Neither of these cases are supported, and neither of them 270 * is particulatly relevant, since we have an abstract view 271 * of the bus; the controller takes care of all the nitty 272 * gritty. 273 */ 274 break; 275 } 276 } 277 278 void 279 icpsp_intr(struct icp_ccb *ic) 280 { 281 struct scsipi_xfer *xs; 282 struct icpsp_softc *sc; 283 struct icp_softc *icp; 284 int soff; 285 286 sc = (struct icpsp_softc *)ic->ic_dv; 287 xs = (struct scsipi_xfer *)ic->ic_context; 288 icp = (struct icp_softc *)device_parent(ic->ic_dv); 289 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 290 sizeof(struct scsi_sense_data); 291 292 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("icpsp_intr\n")); 293 294 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 295 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_POSTREAD); 296 297 if (ic->ic_status == ICP_S_OK) { 298 xs->status = SCSI_OK; 299 xs->resid = 0; 300 } else if (ic->ic_status != ICP_S_RAW_SCSI || icp->icp_info >= 0x100) { 301 xs->error = XS_SELTIMEOUT; 302 xs->resid = xs->datalen; 303 } else { 304 xs->status = icp->icp_info; 305 306 switch (xs->status) { 307 case SCSI_OK: 308 #ifdef DIAGNOSTIC 309 printf("%s: error return (%d), but SCSI_OK?\n", 310 sc->sc_dv.dv_xname, icp->icp_info); 311 #endif 312 xs->resid = 0; 313 break; 314 case SCSI_CHECK: 315 memcpy(&xs->sense.scsi_sense, icp->icp_scr + soff, 316 sizeof(xs->sense.scsi_sense)); 317 xs->error = XS_SENSE; 318 /* FALLTHROUGH */ 319 default: 320 /* 321 * XXX Don't know how to get residual count. 322 */ 323 xs->resid = xs->datalen; 324 break; 325 } 326 } 327 328 if (xs->datalen != 0) 329 icp_ccb_unmap(icp, ic); 330 icp_ccb_free(icp, ic); 331 scsipi_done(xs); 332 } 333 334 void 335 icpsp_adjqparam(struct device *dv, int openings) 336 { 337 struct icpsp_softc *sc = (struct icpsp_softc *) dv; 338 int s; 339 340 s = splbio(); 341 sc->sc_adapter.adapt_openings += openings - sc->sc_openings; 342 sc->sc_openings = openings; 343 splx(s); 344 } 345