icpsp.c revision 1.7
1 /* $NetBSD: icpsp.c,v 1.7 2003/05/13 15:42:34 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 1.7 2003/05/13 15:42:34 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 <machine/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 }; 74 75 void icpsp_attach(struct device *, struct device *, void *); 76 void icpsp_intr(struct icp_ccb *); 77 int icpsp_match(struct device *, struct cfdata *, void *); 78 void icpsp_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, 79 void *); 80 81 CFATTACH_DECL(icpsp, sizeof(struct icpsp_softc), 82 icpsp_match, icpsp_attach, NULL, NULL); 83 84 int 85 icpsp_match(struct device *parent, struct cfdata *match, void *aux) 86 { 87 struct icp_attach_args *icpa; 88 89 icpa = aux; 90 91 return (icpa->icpa_unit >= ICPA_UNIT_SCSI); 92 } 93 94 void 95 icpsp_attach(struct device *parent, struct device *self, void *aux) 96 { 97 struct icp_attach_args *icpa; 98 struct icpsp_softc *sc; 99 struct icp_softc *icp; 100 101 icpa = (struct icp_attach_args *)aux; 102 sc = (struct icpsp_softc *)self; 103 icp = (struct icp_softc *)parent; 104 105 sc->sc_busno = icpa->icpa_unit - ICPA_UNIT_SCSI; 106 printf(": physical SCSI channel %d\n", sc->sc_busno); 107 108 sc->sc_adapter.adapt_dev = &sc->sc_dv; 109 sc->sc_adapter.adapt_nchannels = 1; 110 sc->sc_adapter.adapt_openings = icp->icp_openings; 111 sc->sc_adapter.adapt_max_periph = icp->icp_openings; 112 sc->sc_adapter.adapt_minphys = minphys; 113 sc->sc_adapter.adapt_request = icpsp_scsipi_request; 114 115 sc->sc_channel.chan_adapter = &sc->sc_adapter; 116 sc->sc_channel.chan_bustype = &scsi_bustype; 117 sc->sc_channel.chan_channel = 0; 118 sc->sc_channel.chan_ntargets = ((icp->icp_class & ICP_FC) != 0 ? 119 127 : 16); /* XXX bogus check */ 120 sc->sc_channel.chan_nluns = 7; 121 sc->sc_channel.chan_id = icp->icp_bus_id[sc->sc_busno]; 122 sc->sc_channel.chan_flags = SCSIPI_CHAN_NOSETTLE; 123 124 config_found(self, &sc->sc_channel, scsiprint); 125 } 126 127 void 128 icpsp_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 129 void *arg) 130 { 131 struct scsipi_xfer *xs; 132 struct scsipi_periph *periph; 133 struct icpsp_softc *sc; 134 struct icp_rawcmd *rc; 135 struct icp_softc *icp; 136 struct icp_ccb *ic; 137 int rv, flags, s, soff; 138 139 sc = (void *)chan->chan_adapter->adapt_dev; 140 icp = (struct icp_softc *)sc->sc_dv.dv_parent; 141 142 switch (req) { 143 case ADAPTER_REQ_RUN_XFER: 144 xs = arg; 145 periph = xs->xs_periph; 146 flags = xs->xs_control; 147 148 SC_DEBUG(periph, SCSIPI_DB2, ("icpsp_scsi_request run_xfer\n")); 149 150 if ((flags & XS_CTL_RESET) != 0) { 151 /* XXX Unimplemented. */ 152 xs->error = XS_DRIVER_STUFFUP; 153 scsipi_done(xs); 154 return; 155 } 156 157 #if defined(ICP_DEBUG) || defined(SCSIDEBUG) 158 if (xs->cmdlen > sizeof(rc->rc_cdb)) 159 panic("%s: CDB too large", sc->sc_dv.dv_xname); 160 #endif 161 162 /* 163 * Allocate a CCB. 164 */ 165 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL)) { 166 xs->error = XS_RESOURCE_SHORTAGE; 167 scsipi_done(xs); 168 return; 169 } 170 rc = &ic->ic_cmd.cmd_packet.rc; 171 ic->ic_sg = rc->rc_sg; 172 ic->ic_service = ICP_SCSIRAWSERVICE; 173 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 174 sizeof(struct scsipi_sense_data); 175 176 /* 177 * Build the command. We don't need to actively prevent 178 * access to array components, since the controller kindly 179 * takes care of that for us. 180 */ 181 ic->ic_cmd.cmd_opcode = htole16(ICP_WRITE); 182 memcpy(rc->rc_cdb, xs->cmd, xs->cmdlen); 183 184 rc->rc_padding0 = 0; 185 rc->rc_direction = htole32((flags & XS_CTL_DATA_IN) != 0 ? 186 ICP_DATA_IN : ICP_DATA_OUT); 187 rc->rc_mdisc_time = 0; 188 rc->rc_mcon_time = 0; 189 rc->rc_clen = htole32(xs->cmdlen); 190 rc->rc_target = periph->periph_target; 191 rc->rc_lun = periph->periph_lun; 192 rc->rc_bus = sc->sc_busno; 193 rc->rc_priority = 0; 194 rc->rc_sense_len = htole32(sizeof(xs->sense.scsi_sense)); 195 rc->rc_sense_addr = 196 htole32(soff + icp->icp_scr_seg[0].ds_addr); 197 rc->rc_padding1 = 0; 198 199 if (xs->datalen != 0) { 200 rv = icp_ccb_map(icp, ic, xs->data, xs->datalen, 201 (flags & XS_CTL_DATA_IN) != 0 ? IC_XFER_IN : 202 IC_XFER_OUT); 203 if (rv != 0) { 204 icp_ccb_free(icp, ic); 205 xs->error = XS_DRIVER_STUFFUP; 206 scsipi_done(xs); 207 return; 208 } 209 210 rc->rc_nsgent = htole32(ic->ic_nsgent); 211 rc->rc_sdata = ~0; 212 rc->rc_sdlen = htole32(xs->datalen); 213 } else { 214 rc->rc_nsgent = 0; 215 rc->rc_sdata = 0; 216 rc->rc_sdlen = 0; 217 } 218 219 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd + 220 ic->ic_nsgent * sizeof(*ic->ic_sg); 221 222 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 223 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_PREREAD); 224 225 /* 226 * Fire it off to the controller. 227 */ 228 ic->ic_intr = icpsp_intr; 229 ic->ic_context = xs; 230 ic->ic_dv = &sc->sc_dv; 231 232 if ((flags & XS_CTL_POLL) != 0) { 233 s = splbio(); 234 rv = icp_ccb_poll(icp, ic, xs->timeout); 235 if (rv != 0) { 236 if (xs->datalen != 0) 237 icp_ccb_unmap(icp, ic); 238 icp_ccb_free(icp, ic); 239 xs->error = XS_TIMEOUT; 240 scsipi_done(xs); 241 242 /* 243 * XXX We're now in a bad way, because we 244 * don't know how to abort the command. 245 * That shouldn't matter too much, since 246 * polled commands won't be used while the 247 * system is running. 248 */ 249 } 250 splx(s); 251 } else 252 icp_ccb_enqueue(icp, ic); 253 254 break; 255 256 case ADAPTER_REQ_GROW_RESOURCES: 257 case ADAPTER_REQ_SET_XFER_MODE: 258 /* 259 * Neither of these cases are supported, and neither of them 260 * is particulatly relevant, since we have an abstract view 261 * of the bus; the controller takes care of all the nitty 262 * gritty. 263 */ 264 break; 265 } 266 } 267 268 void 269 icpsp_intr(struct icp_ccb *ic) 270 { 271 struct scsipi_xfer *xs; 272 struct icpsp_softc *sc; 273 struct icp_softc *icp; 274 int soff; 275 276 sc = (struct icpsp_softc *)ic->ic_dv; 277 xs = (struct scsipi_xfer *)ic->ic_context; 278 icp = (struct icp_softc *)ic->ic_dv->dv_parent; 279 soff = ICP_SCRATCH_SENSE + ic->ic_ident * 280 sizeof(struct scsipi_sense_data); 281 282 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("icpsp_intr\n")); 283 284 bus_dmamap_sync(icp->icp_dmat, icp->icp_scr_dmamap, soff, 285 sizeof(xs->sense.scsi_sense), BUS_DMASYNC_POSTREAD); 286 287 if (ic->ic_status == ICP_S_OK) { 288 xs->status = SCSI_OK; 289 xs->resid = 0; 290 } else if (ic->ic_status != ICP_S_RAW_SCSI || icp->icp_info >= 0x100) { 291 xs->error = XS_SELTIMEOUT; 292 xs->resid = xs->datalen; 293 } else { 294 xs->status = icp->icp_info; 295 296 switch (xs->status) { 297 case SCSI_OK: 298 #ifdef DIAGNOSTIC 299 printf("%s: error return (%d), but SCSI_OK?\n", 300 sc->sc_dv.dv_xname, icp->icp_info); 301 #endif 302 xs->resid = 0; 303 break; 304 case SCSI_CHECK: 305 memcpy(&xs->sense.scsi_sense, icp->icp_scr + soff, 306 sizeof(xs->sense.scsi_sense)); 307 xs->error = XS_SENSE; 308 /* FALLTHROUGH */ 309 default: 310 /* 311 * XXX Don't know how to get residual count. 312 */ 313 xs->resid = xs->datalen; 314 break; 315 } 316 } 317 318 if (xs->datalen != 0) 319 icp_ccb_unmap(icp, ic); 320 icp_ccb_free(icp, ic); 321 scsipi_done(xs); 322 } 323
Indexes created Thu Oct 02 07:10:07 GMT 2025