ncr53c9x.c revision 1.83.2.6
1 1.83.2.6 jdolecek /* $NetBSD: ncr53c9x.c,v 1.83.2.6 2002/06/23 17:46:44 jdolecek Exp $ */ 2 1.83.2.2 lukem 3 1.83.2.2 lukem /*- 4 1.83.2.2 lukem * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 1.83.2.2 lukem * All rights reserved. 6 1.83.2.2 lukem * 7 1.83.2.2 lukem * This code is derived from software contributed to The NetBSD Foundation 8 1.83.2.2 lukem * by Charles M. Hannum. 9 1.83.2.2 lukem * 10 1.83.2.2 lukem * Redistribution and use in source and binary forms, with or without 11 1.83.2.2 lukem * modification, are permitted provided that the following conditions 12 1.83.2.2 lukem * are met: 13 1.83.2.2 lukem * 1. Redistributions of source code must retain the above copyright 14 1.83.2.2 lukem * notice, this list of conditions and the following disclaimer. 15 1.83.2.2 lukem * 2. Redistributions in binary form must reproduce the above copyright 16 1.83.2.2 lukem * notice, this list of conditions and the following disclaimer in the 17 1.83.2.2 lukem * documentation and/or other materials provided with the distribution. 18 1.83.2.2 lukem * 3. All advertising materials mentioning features or use of this software 19 1.83.2.2 lukem * must display the following acknowledgement: 20 1.83.2.2 lukem * This product includes software developed by the NetBSD 21 1.83.2.2 lukem * Foundation, Inc. and its contributors. 22 1.83.2.2 lukem * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.83.2.2 lukem * contributors may be used to endorse or promote products derived 24 1.83.2.2 lukem * from this software without specific prior written permission. 25 1.83.2.2 lukem * 26 1.83.2.2 lukem * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.83.2.2 lukem * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.83.2.2 lukem * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.83.2.2 lukem * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.83.2.2 lukem * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.83.2.2 lukem * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.83.2.2 lukem * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.83.2.2 lukem * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.83.2.2 lukem * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.83.2.2 lukem * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.83.2.2 lukem * POSSIBILITY OF SUCH DAMAGE. 37 1.83.2.2 lukem */ 38 1.83.2.2 lukem 39 1.83.2.2 lukem /* 40 1.83.2.2 lukem * Copyright (c) 1994 Peter Galbavy 41 1.83.2.2 lukem * Copyright (c) 1995 Paul Kranenburg 42 1.83.2.2 lukem * All rights reserved. 43 1.83.2.2 lukem * 44 1.83.2.2 lukem * Redistribution and use in source and binary forms, with or without 45 1.83.2.2 lukem * modification, are permitted provided that the following conditions 46 1.83.2.2 lukem * are met: 47 1.83.2.2 lukem * 1. Redistributions of source code must retain the above copyright 48 1.83.2.2 lukem * notice, this list of conditions and the following disclaimer. 49 1.83.2.2 lukem * 2. Redistributions in binary form must reproduce the above copyright 50 1.83.2.2 lukem * notice, this list of conditions and the following disclaimer in the 51 1.83.2.2 lukem * documentation and/or other materials provided with the distribution. 52 1.83.2.2 lukem * 3. All advertising materials mentioning features or use of this software 53 1.83.2.2 lukem * must display the following acknowledgement: 54 1.83.2.2 lukem * This product includes software developed by Peter Galbavy 55 1.83.2.2 lukem * 4. The name of the author may not be used to endorse or promote products 56 1.83.2.2 lukem * derived from this software without specific prior written permission. 57 1.83.2.2 lukem * 58 1.83.2.2 lukem * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 1.83.2.2 lukem * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 60 1.83.2.2 lukem * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 61 1.83.2.2 lukem * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 62 1.83.2.2 lukem * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 63 1.83.2.2 lukem * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 64 1.83.2.2 lukem * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 1.83.2.2 lukem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 66 1.83.2.2 lukem * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 67 1.83.2.2 lukem * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 68 1.83.2.2 lukem * POSSIBILITY OF SUCH DAMAGE. 69 1.83.2.2 lukem */ 70 1.83.2.2 lukem 71 1.83.2.2 lukem /* 72 1.83.2.2 lukem * Based on aic6360 by Jarle Greipsland 73 1.83.2.2 lukem * 74 1.83.2.2 lukem * Acknowledgements: Many of the algorithms used in this driver are 75 1.83.2.2 lukem * inspired by the work of Julian Elischer (julian (at) tfs.com) and 76 1.83.2.2 lukem * Charles Hannum (mycroft (at) duality.gnu.ai.mit.edu). Thanks a million! 77 1.83.2.2 lukem */ 78 1.83.2.2 lukem 79 1.83.2.3 thorpej #include <sys/cdefs.h> 80 1.83.2.6 jdolecek __KERNEL_RCSID(0, "$NetBSD: ncr53c9x.c,v 1.83.2.6 2002/06/23 17:46:44 jdolecek Exp $"); 81 1.83.2.3 thorpej 82 1.83.2.2 lukem #include <sys/param.h> 83 1.83.2.2 lukem #include <sys/systm.h> 84 1.83.2.2 lukem #include <sys/callout.h> 85 1.83.2.2 lukem #include <sys/kernel.h> 86 1.83.2.2 lukem #include <sys/errno.h> 87 1.83.2.2 lukem #include <sys/ioctl.h> 88 1.83.2.2 lukem #include <sys/device.h> 89 1.83.2.2 lukem #include <sys/buf.h> 90 1.83.2.2 lukem #include <sys/malloc.h> 91 1.83.2.2 lukem #include <sys/proc.h> 92 1.83.2.2 lukem #include <sys/queue.h> 93 1.83.2.2 lukem #include <sys/pool.h> 94 1.83.2.2 lukem #include <sys/scsiio.h> 95 1.83.2.2 lukem 96 1.83.2.2 lukem #include <dev/scsipi/scsi_all.h> 97 1.83.2.2 lukem #include <dev/scsipi/scsipi_all.h> 98 1.83.2.2 lukem #include <dev/scsipi/scsiconf.h> 99 1.83.2.2 lukem #include <dev/scsipi/scsi_message.h> 100 1.83.2.2 lukem 101 1.83.2.2 lukem #include <dev/ic/ncr53c9xreg.h> 102 1.83.2.2 lukem #include <dev/ic/ncr53c9xvar.h> 103 1.83.2.2 lukem 104 1.83.2.2 lukem int ncr53c9x_debug = 0; /*NCR_SHOWPHASE|NCR_SHOWMISC|NCR_SHOWTRAC|NCR_SHOWCMDS;*/ 105 1.83.2.2 lukem #ifdef DEBUG 106 1.83.2.2 lukem int ncr53c9x_notag = 0; 107 1.83.2.2 lukem #endif 108 1.83.2.2 lukem 109 1.83.2.2 lukem /*static*/ void ncr53c9x_readregs(struct ncr53c9x_softc *); 110 1.83.2.2 lukem /*static*/ void ncr53c9x_select(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 111 1.83.2.2 lukem /*static*/ int ncr53c9x_reselect(struct ncr53c9x_softc *, int, int, int); 112 1.83.2.2 lukem /*static*/ void ncr53c9x_scsi_reset(struct ncr53c9x_softc *); 113 1.83.2.2 lukem /*static*/ int ncr53c9x_poll(struct ncr53c9x_softc *, 114 1.83.2.2 lukem struct scsipi_xfer *, int); 115 1.83.2.2 lukem /*static*/ void ncr53c9x_sched(struct ncr53c9x_softc *); 116 1.83.2.2 lukem /*static*/ void ncr53c9x_done(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 117 1.83.2.2 lukem /*static*/ void ncr53c9x_msgin(struct ncr53c9x_softc *); 118 1.83.2.2 lukem /*static*/ void ncr53c9x_msgout(struct ncr53c9x_softc *); 119 1.83.2.2 lukem /*static*/ void ncr53c9x_timeout(void *arg); 120 1.83.2.2 lukem /*static*/ void ncr53c9x_watch(void *arg); 121 1.83.2.2 lukem /*static*/ void ncr53c9x_abort(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 122 1.83.2.2 lukem /*static*/ void ncr53c9x_dequeue(struct ncr53c9x_softc *, 123 1.83.2.2 lukem struct ncr53c9x_ecb *); 124 1.83.2.2 lukem /*static*/ int ncr53c9x_ioctl(struct scsipi_channel *, u_long, 125 1.83.2.2 lukem caddr_t, int, struct proc *); 126 1.83.2.2 lukem 127 1.83.2.2 lukem void ncr53c9x_sense(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 128 1.83.2.2 lukem void ncr53c9x_free_ecb(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 129 1.83.2.2 lukem struct ncr53c9x_ecb *ncr53c9x_get_ecb(struct ncr53c9x_softc *, int); 130 1.83.2.2 lukem 131 1.83.2.2 lukem static inline int ncr53c9x_stp2cpb(struct ncr53c9x_softc *, int); 132 1.83.2.2 lukem static inline void ncr53c9x_setsync(struct ncr53c9x_softc *, 133 1.83.2.2 lukem struct ncr53c9x_tinfo *); 134 1.83.2.2 lukem void ncr53c9x_update_xfer_mode (struct ncr53c9x_softc *, int); 135 1.83.2.2 lukem static struct ncr53c9x_linfo *ncr53c9x_lunsearch(struct ncr53c9x_tinfo *, 136 1.83.2.2 lukem int64_t lun); 137 1.83.2.2 lukem 138 1.83.2.2 lukem static void ncr53c9x_wrfifo(struct ncr53c9x_softc *, u_char *, int); 139 1.83.2.2 lukem 140 1.83.2.2 lukem static int ncr53c9x_rdfifo(struct ncr53c9x_softc *, int); 141 1.83.2.2 lukem #define NCR_RDFIFO_START 0 142 1.83.2.2 lukem #define NCR_RDFIFO_CONTINUE 1 143 1.83.2.2 lukem 144 1.83.2.2 lukem 145 1.83.2.2 lukem #define NCR_SET_COUNT(sc, size) do { \ 146 1.83.2.2 lukem NCR_WRITE_REG((sc), NCR_TCL, (size)); \ 147 1.83.2.2 lukem NCR_WRITE_REG((sc), NCR_TCM, (size) >> 8); \ 148 1.83.2.2 lukem if ((sc->sc_cfg2 & NCRCFG2_FE) || \ 149 1.83.2.2 lukem (sc->sc_rev == NCR_VARIANT_FAS366)) { \ 150 1.83.2.2 lukem NCR_WRITE_REG((sc), NCR_TCH, (size) >> 16); \ 151 1.83.2.2 lukem } \ 152 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { \ 153 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_RCH, 0); \ 154 1.83.2.2 lukem } \ 155 1.83.2.2 lukem } while (0) 156 1.83.2.2 lukem 157 1.83.2.2 lukem static int ecb_pool_initialized = 0; 158 1.83.2.2 lukem static struct pool ecb_pool; 159 1.83.2.2 lukem 160 1.83.2.2 lukem /* 161 1.83.2.2 lukem * Names for the NCR53c9x variants, correspnding to the variant tags 162 1.83.2.2 lukem * in ncr53c9xvar.h. 163 1.83.2.2 lukem */ 164 1.83.2.2 lukem static const char *ncr53c9x_variant_names[] = { 165 1.83.2.2 lukem "ESP100", 166 1.83.2.2 lukem "ESP100A", 167 1.83.2.2 lukem "ESP200", 168 1.83.2.2 lukem "NCR53C94", 169 1.83.2.2 lukem "NCR53C96", 170 1.83.2.2 lukem "ESP406", 171 1.83.2.2 lukem "FAS408", 172 1.83.2.2 lukem "FAS216", 173 1.83.2.2 lukem "AM53C974", 174 1.83.2.2 lukem "FAS366/HME", 175 1.83.2.3 thorpej "NCR53C90 (86C01)", 176 1.83.2.2 lukem }; 177 1.83.2.2 lukem 178 1.83.2.2 lukem /* 179 1.83.2.2 lukem * Search linked list for LUN info by LUN id. 180 1.83.2.2 lukem */ 181 1.83.2.2 lukem static struct ncr53c9x_linfo * 182 1.83.2.2 lukem ncr53c9x_lunsearch(ti, lun) 183 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 184 1.83.2.2 lukem int64_t lun; 185 1.83.2.2 lukem { 186 1.83.2.2 lukem struct ncr53c9x_linfo *li; 187 1.83.2.2 lukem LIST_FOREACH(li, &ti->luns, link) 188 1.83.2.2 lukem if (li->lun == lun) 189 1.83.2.2 lukem return (li); 190 1.83.2.2 lukem return (NULL); 191 1.83.2.2 lukem } 192 1.83.2.2 lukem 193 1.83.2.2 lukem /* 194 1.83.2.2 lukem * Attach this instance, and then all the sub-devices 195 1.83.2.2 lukem */ 196 1.83.2.2 lukem void 197 1.83.2.2 lukem ncr53c9x_attach(sc) 198 1.83.2.2 lukem struct ncr53c9x_softc *sc; 199 1.83.2.2 lukem { 200 1.83.2.2 lukem struct scsipi_adapter *adapt = &sc->sc_adapter; 201 1.83.2.2 lukem struct scsipi_channel *chan = &sc->sc_channel; 202 1.83.2.2 lukem 203 1.83.2.2 lukem callout_init(&sc->sc_watchdog); 204 1.83.2.2 lukem /* 205 1.83.2.2 lukem * Allocate SCSI message buffers. 206 1.83.2.2 lukem * Front-ends can override allocation to avoid alignment 207 1.83.2.2 lukem * handling in the DMA engines. Note that that ncr53c9x_msgout() 208 1.83.2.2 lukem * can request a 1 byte DMA transfer. 209 1.83.2.2 lukem */ 210 1.83.2.2 lukem if (sc->sc_omess == NULL) 211 1.83.2.2 lukem sc->sc_omess = malloc(NCR_MAX_MSG_LEN, M_DEVBUF, M_NOWAIT); 212 1.83.2.2 lukem 213 1.83.2.2 lukem if (sc->sc_imess == NULL) 214 1.83.2.2 lukem sc->sc_imess = malloc(NCR_MAX_MSG_LEN + 1, M_DEVBUF, M_NOWAIT); 215 1.83.2.2 lukem 216 1.83.2.2 lukem if (sc->sc_omess == NULL || sc->sc_imess == NULL) { 217 1.83.2.2 lukem printf("out of memory\n"); 218 1.83.2.2 lukem return; 219 1.83.2.2 lukem } 220 1.83.2.2 lukem 221 1.83.2.2 lukem /* 222 1.83.2.2 lukem * Note, the front-end has set us up to print the chip variation. 223 1.83.2.2 lukem */ 224 1.83.2.2 lukem if (sc->sc_rev >= NCR_VARIANT_MAX) { 225 1.83.2.2 lukem printf("\n%s: unknown variant %d, devices not attached\n", 226 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_rev); 227 1.83.2.2 lukem return; 228 1.83.2.2 lukem } 229 1.83.2.2 lukem 230 1.83.2.2 lukem printf(": %s, %dMHz, SCSI ID %d\n", 231 1.83.2.2 lukem ncr53c9x_variant_names[sc->sc_rev], sc->sc_freq, sc->sc_id); 232 1.83.2.2 lukem 233 1.83.2.6 jdolecek /* 234 1.83.2.6 jdolecek * Treat NCR53C90 with the 86C01 DMA chip exactly as ESP100 235 1.83.2.6 jdolecek * from now on. 236 1.83.2.6 jdolecek */ 237 1.83.2.6 jdolecek if (sc->sc_rev == NCR_VARIANT_NCR53C90_86C01) 238 1.83.2.6 jdolecek sc->sc_rev = NCR_VARIANT_ESP100; 239 1.83.2.6 jdolecek 240 1.83.2.2 lukem sc->sc_ccf = FREQTOCCF(sc->sc_freq); 241 1.83.2.2 lukem 242 1.83.2.2 lukem /* The value *must not* be == 1. Make it 2 */ 243 1.83.2.2 lukem if (sc->sc_ccf == 1) 244 1.83.2.2 lukem sc->sc_ccf = 2; 245 1.83.2.2 lukem 246 1.83.2.2 lukem /* 247 1.83.2.2 lukem * The recommended timeout is 250ms. This register is loaded 248 1.83.2.2 lukem * with a value calculated as follows, from the docs: 249 1.83.2.2 lukem * 250 1.83.2.2 lukem * (timout period) x (CLK frequency) 251 1.83.2.2 lukem * reg = ------------------------------------- 252 1.83.2.2 lukem * 8192 x (Clock Conversion Factor) 253 1.83.2.2 lukem * 254 1.83.2.2 lukem * Since CCF has a linear relation to CLK, this generally computes 255 1.83.2.2 lukem * to the constant of 153. 256 1.83.2.2 lukem */ 257 1.83.2.2 lukem sc->sc_timeout = ((250 * 1000) * sc->sc_freq) / (8192 * sc->sc_ccf); 258 1.83.2.2 lukem 259 1.83.2.2 lukem /* CCF register only has 3 bits; 0 is actually 8 */ 260 1.83.2.2 lukem sc->sc_ccf &= 7; 261 1.83.2.2 lukem 262 1.83.2.2 lukem /* 263 1.83.2.2 lukem * Fill in the scsipi_adapter. 264 1.83.2.2 lukem */ 265 1.83.2.2 lukem adapt->adapt_dev = &sc->sc_dev; 266 1.83.2.2 lukem adapt->adapt_nchannels = 1; 267 1.83.2.2 lukem adapt->adapt_openings = 256; 268 1.83.2.2 lukem adapt->adapt_max_periph = 256; 269 1.83.2.2 lukem adapt->adapt_ioctl = ncr53c9x_ioctl; 270 1.83.2.2 lukem /* adapt_request initialized by front-end */ 271 1.83.2.2 lukem /* adapt_minphys initialized by front-end */ 272 1.83.2.2 lukem 273 1.83.2.2 lukem /* 274 1.83.2.2 lukem * Fill in the scsipi_channel. 275 1.83.2.2 lukem */ 276 1.83.2.2 lukem memset(chan, 0, sizeof(*chan)); 277 1.83.2.2 lukem chan->chan_adapter = adapt; 278 1.83.2.2 lukem chan->chan_bustype = &scsi_bustype; 279 1.83.2.2 lukem chan->chan_channel = 0; 280 1.83.2.2 lukem chan->chan_ntargets = 8; /* XXX fas has 16(not supported) */ 281 1.83.2.2 lukem chan->chan_nluns = 8; 282 1.83.2.2 lukem chan->chan_id = sc->sc_id; 283 1.83.2.2 lukem 284 1.83.2.2 lukem /* 285 1.83.2.2 lukem * Add reference to adapter so that we drop the reference after 286 1.83.2.2 lukem * config_found() to make sure the adatper is disabled. 287 1.83.2.2 lukem */ 288 1.83.2.2 lukem if (scsipi_adapter_addref(adapt) != 0) { 289 1.83.2.2 lukem printf("%s: unable to enable controller\n", 290 1.83.2.2 lukem sc->sc_dev.dv_xname); 291 1.83.2.2 lukem return; 292 1.83.2.2 lukem } 293 1.83.2.2 lukem 294 1.83.2.2 lukem /* Reset state & bus */ 295 1.83.2.2 lukem sc->sc_cfflags = sc->sc_dev.dv_cfdata->cf_flags; 296 1.83.2.2 lukem sc->sc_state = 0; 297 1.83.2.2 lukem ncr53c9x_init(sc, 1); 298 1.83.2.2 lukem 299 1.83.2.2 lukem /* 300 1.83.2.2 lukem * Now try to attach all the sub-devices 301 1.83.2.2 lukem */ 302 1.83.2.2 lukem sc->sc_child = config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 303 1.83.2.2 lukem 304 1.83.2.2 lukem scsipi_adapter_delref(adapt); 305 1.83.2.2 lukem callout_reset(&sc->sc_watchdog, 60*hz, ncr53c9x_watch, sc); 306 1.83.2.2 lukem } 307 1.83.2.2 lukem 308 1.83.2.2 lukem int 309 1.83.2.2 lukem ncr53c9x_detach(sc, flags) 310 1.83.2.2 lukem struct ncr53c9x_softc *sc; 311 1.83.2.2 lukem int flags; 312 1.83.2.2 lukem { 313 1.83.2.2 lukem int error; 314 1.83.2.2 lukem 315 1.83.2.2 lukem if (sc->sc_child) { 316 1.83.2.2 lukem error = config_detach(sc->sc_child, flags); 317 1.83.2.2 lukem if (error) 318 1.83.2.2 lukem return (error); 319 1.83.2.2 lukem } 320 1.83.2.2 lukem 321 1.83.2.2 lukem free(sc->sc_imess, M_DEVBUF); 322 1.83.2.2 lukem free(sc->sc_omess, M_DEVBUF); 323 1.83.2.2 lukem 324 1.83.2.2 lukem return (0); 325 1.83.2.2 lukem } 326 1.83.2.2 lukem 327 1.83.2.2 lukem /* 328 1.83.2.2 lukem * This is the generic ncr53c9x reset function. It does not reset the SCSI bus, 329 1.83.2.2 lukem * only this controller, but kills any on-going commands, and also stops 330 1.83.2.2 lukem * and resets the DMA. 331 1.83.2.2 lukem * 332 1.83.2.2 lukem * After reset, registers are loaded with the defaults from the attach 333 1.83.2.2 lukem * routine above. 334 1.83.2.2 lukem */ 335 1.83.2.2 lukem void 336 1.83.2.2 lukem ncr53c9x_reset(sc) 337 1.83.2.2 lukem struct ncr53c9x_softc *sc; 338 1.83.2.2 lukem { 339 1.83.2.2 lukem 340 1.83.2.2 lukem /* reset DMA first */ 341 1.83.2.2 lukem NCRDMA_RESET(sc); 342 1.83.2.2 lukem 343 1.83.2.2 lukem /* reset SCSI chip */ 344 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTCHIP); 345 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP); 346 1.83.2.2 lukem DELAY(500); 347 1.83.2.2 lukem 348 1.83.2.2 lukem /* do these backwards, and fall through */ 349 1.83.2.2 lukem switch (sc->sc_rev) { 350 1.83.2.2 lukem case NCR_VARIANT_ESP406: 351 1.83.2.2 lukem case NCR_VARIANT_FAS408: 352 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG5, sc->sc_cfg5 | NCRCFG5_SINT); 353 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG4, sc->sc_cfg4); 354 1.83.2.2 lukem case NCR_VARIANT_AM53C974: 355 1.83.2.2 lukem case NCR_VARIANT_FAS216: 356 1.83.2.2 lukem case NCR_VARIANT_NCR53C94: 357 1.83.2.2 lukem case NCR_VARIANT_NCR53C96: 358 1.83.2.2 lukem case NCR_VARIANT_ESP200: 359 1.83.2.2 lukem sc->sc_features |= NCR_F_HASCFG3; 360 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 361 1.83.2.2 lukem case NCR_VARIANT_ESP100A: 362 1.83.2.2 lukem sc->sc_features |= NCR_F_SELATN3; 363 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2); 364 1.83.2.2 lukem case NCR_VARIANT_ESP100: 365 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1); 366 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CCF, sc->sc_ccf); 367 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, 0); 368 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_TIMEOUT, sc->sc_timeout); 369 1.83.2.2 lukem break; 370 1.83.2.2 lukem 371 1.83.2.2 lukem case NCR_VARIANT_FAS366: 372 1.83.2.2 lukem sc->sc_features |= 373 1.83.2.2 lukem NCR_F_HASCFG3 | NCR_F_FASTSCSI | NCR_F_SELATN3; 374 1.83.2.2 lukem sc->sc_cfg3 = NCRFASCFG3_FASTCLK | NCRFASCFG3_OBAUTO; 375 1.83.2.2 lukem sc->sc_cfg3_fscsi = NCRFASCFG3_FASTSCSI; 376 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 377 1.83.2.2 lukem sc->sc_cfg2 = 0; /* NCRCFG2_HMEFE| NCRCFG2_HME32 */ 378 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2); 379 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1); 380 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CCF, sc->sc_ccf); 381 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, 0); 382 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_TIMEOUT, sc->sc_timeout); 383 1.83.2.2 lukem break; 384 1.83.2.2 lukem 385 1.83.2.2 lukem default: 386 1.83.2.2 lukem printf("%s: unknown revision code, assuming ESP100\n", 387 1.83.2.2 lukem sc->sc_dev.dv_xname); 388 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1); 389 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CCF, sc->sc_ccf); 390 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, 0); 391 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_TIMEOUT, sc->sc_timeout); 392 1.83.2.2 lukem } 393 1.83.2.2 lukem 394 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_AM53C974) 395 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_AMDCFG4, sc->sc_cfg4); 396 1.83.2.2 lukem 397 1.83.2.2 lukem #if 0 398 1.83.2.2 lukem printf("%s: ncr53c9x_reset: revision %d\n", 399 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_rev); 400 1.83.2.2 lukem printf("%s: ncr53c9x_reset: cfg1 0x%x, cfg2 0x%x, cfg3 0x%x, " 401 1.83.2.2 lukem "ccf 0x%x, timeout 0x%x\n", 402 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_cfg1, sc->sc_cfg2, sc->sc_cfg3, 403 1.83.2.2 lukem sc->sc_ccf, sc->sc_timeout); 404 1.83.2.2 lukem #endif 405 1.83.2.2 lukem } 406 1.83.2.2 lukem 407 1.83.2.2 lukem /* 408 1.83.2.2 lukem * Reset the SCSI bus, but not the chip 409 1.83.2.2 lukem */ 410 1.83.2.2 lukem void 411 1.83.2.2 lukem ncr53c9x_scsi_reset(sc) 412 1.83.2.2 lukem struct ncr53c9x_softc *sc; 413 1.83.2.2 lukem { 414 1.83.2.2 lukem 415 1.83.2.2 lukem (*sc->sc_glue->gl_dma_stop)(sc); 416 1.83.2.2 lukem 417 1.83.2.2 lukem printf("%s: resetting SCSI bus\n", sc->sc_dev.dv_xname); 418 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTSCSI); 419 1.83.2.2 lukem } 420 1.83.2.2 lukem 421 1.83.2.2 lukem /* 422 1.83.2.2 lukem * Initialize ncr53c9x state machine 423 1.83.2.2 lukem */ 424 1.83.2.2 lukem void 425 1.83.2.2 lukem ncr53c9x_init(sc, doreset) 426 1.83.2.2 lukem struct ncr53c9x_softc *sc; 427 1.83.2.2 lukem int doreset; 428 1.83.2.2 lukem { 429 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 430 1.83.2.2 lukem struct ncr53c9x_linfo *li; 431 1.83.2.2 lukem int i, r; 432 1.83.2.2 lukem 433 1.83.2.2 lukem NCR_TRACE(("[NCR_INIT(%d) %d] ", doreset, sc->sc_state)); 434 1.83.2.2 lukem 435 1.83.2.2 lukem if (!ecb_pool_initialized) { 436 1.83.2.2 lukem /* All instances share this pool */ 437 1.83.2.2 lukem pool_init(&ecb_pool, sizeof(struct ncr53c9x_ecb), 0, 0, 0, 438 1.83.2.5 jdolecek "ncr53c9x_ecb", NULL); 439 1.83.2.2 lukem ecb_pool_initialized = 1; 440 1.83.2.2 lukem } 441 1.83.2.2 lukem 442 1.83.2.2 lukem if (sc->sc_state == 0) { 443 1.83.2.2 lukem /* First time through; initialize. */ 444 1.83.2.2 lukem 445 1.83.2.2 lukem TAILQ_INIT(&sc->ready_list); 446 1.83.2.2 lukem sc->sc_nexus = NULL; 447 1.83.2.2 lukem memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 448 1.83.2.2 lukem for (r = 0; r < NCR_NTARG; r++) { 449 1.83.2.2 lukem LIST_INIT(&sc->sc_tinfo[r].luns); 450 1.83.2.2 lukem } 451 1.83.2.2 lukem } else { 452 1.83.2.2 lukem /* Cancel any active commands. */ 453 1.83.2.2 lukem sc->sc_state = NCR_CLEANING; 454 1.83.2.2 lukem sc->sc_msgify = 0; 455 1.83.2.2 lukem if ((ecb = sc->sc_nexus) != NULL) { 456 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 457 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 458 1.83.2.2 lukem } 459 1.83.2.2 lukem /* Cancel outstanding disconnected commands on each LUN */ 460 1.83.2.2 lukem for (r = 0; r < 8; r++) { 461 1.83.2.2 lukem LIST_FOREACH(li, &sc->sc_tinfo[r].luns, link) { 462 1.83.2.2 lukem if ((ecb = li->untagged) != NULL) { 463 1.83.2.2 lukem li->untagged = NULL; 464 1.83.2.2 lukem /* 465 1.83.2.2 lukem * XXXXXXX 466 1.83.2.2 lukem * 467 1.83.2.2 lukem * Should we terminate a command 468 1.83.2.2 lukem * that never reached the disk? 469 1.83.2.2 lukem */ 470 1.83.2.2 lukem li->busy = 0; 471 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 472 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 473 1.83.2.2 lukem } 474 1.83.2.2 lukem for (i = 0; i < 256; i++) 475 1.83.2.2 lukem if ((ecb = li->queued[i])) { 476 1.83.2.2 lukem li->queued[i] = NULL; 477 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 478 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 479 1.83.2.2 lukem } 480 1.83.2.2 lukem li->used = 0; 481 1.83.2.2 lukem } 482 1.83.2.2 lukem } 483 1.83.2.2 lukem } 484 1.83.2.2 lukem 485 1.83.2.2 lukem /* 486 1.83.2.2 lukem * reset the chip to a known state 487 1.83.2.2 lukem */ 488 1.83.2.2 lukem ncr53c9x_reset(sc); 489 1.83.2.2 lukem 490 1.83.2.2 lukem sc->sc_phase = sc->sc_prevphase = INVALID_PHASE; 491 1.83.2.2 lukem for (r = 0; r < 8; r++) { 492 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[r]; 493 1.83.2.2 lukem /* XXX - config flags per target: low bits: no reselect; high bits: no synch */ 494 1.83.2.2 lukem 495 1.83.2.2 lukem ti->flags = ((sc->sc_minsync && !(sc->sc_cfflags & (1<<(r+8)))) 496 1.83.2.2 lukem ? 0 : T_SYNCHOFF) | 497 1.83.2.2 lukem ((sc->sc_cfflags & (1<<r)) ? T_RSELECTOFF : 0) | 498 1.83.2.2 lukem T_NEED_TO_RESET; 499 1.83.2.2 lukem #ifdef DEBUG 500 1.83.2.2 lukem if (ncr53c9x_notag) 501 1.83.2.2 lukem ti->flags &= ~T_TAG; 502 1.83.2.2 lukem #endif 503 1.83.2.2 lukem ti->period = sc->sc_minsync; 504 1.83.2.2 lukem ti->offset = 0; 505 1.83.2.2 lukem ti->cfg3 = 0; 506 1.83.2.2 lukem } 507 1.83.2.2 lukem 508 1.83.2.2 lukem if (doreset) { 509 1.83.2.2 lukem sc->sc_state = NCR_SBR; 510 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTSCSI); 511 1.83.2.2 lukem } else { 512 1.83.2.2 lukem sc->sc_state = NCR_IDLE; 513 1.83.2.2 lukem ncr53c9x_sched(sc); 514 1.83.2.2 lukem } 515 1.83.2.2 lukem } 516 1.83.2.2 lukem 517 1.83.2.2 lukem /* 518 1.83.2.2 lukem * Read the NCR registers, and save their contents for later use. 519 1.83.2.2 lukem * NCR_STAT, NCR_STEP & NCR_INTR are mostly zeroed out when reading 520 1.83.2.2 lukem * NCR_INTR - so make sure it is the last read. 521 1.83.2.2 lukem * 522 1.83.2.2 lukem * I think that (from reading the docs) most bits in these registers 523 1.83.2.2 lukem * only make sense when he DMA CSR has an interrupt showing. Call only 524 1.83.2.2 lukem * if an interrupt is pending. 525 1.83.2.2 lukem */ 526 1.83.2.2 lukem __inline__ void 527 1.83.2.2 lukem ncr53c9x_readregs(sc) 528 1.83.2.2 lukem struct ncr53c9x_softc *sc; 529 1.83.2.2 lukem { 530 1.83.2.2 lukem 531 1.83.2.2 lukem sc->sc_espstat = NCR_READ_REG(sc, NCR_STAT); 532 1.83.2.2 lukem /* Only the stepo bits are of interest */ 533 1.83.2.2 lukem sc->sc_espstep = NCR_READ_REG(sc, NCR_STEP) & NCRSTEP_MASK; 534 1.83.2.2 lukem 535 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) 536 1.83.2.2 lukem sc->sc_espstat2 = NCR_READ_REG(sc, NCR_STAT2); 537 1.83.2.2 lukem 538 1.83.2.2 lukem sc->sc_espintr = NCR_READ_REG(sc, NCR_INTR); 539 1.83.2.2 lukem 540 1.83.2.2 lukem if (sc->sc_glue->gl_clear_latched_intr != NULL) 541 1.83.2.2 lukem (*sc->sc_glue->gl_clear_latched_intr)(sc); 542 1.83.2.2 lukem 543 1.83.2.2 lukem /* 544 1.83.2.2 lukem * Determine the SCSI bus phase, return either a real SCSI bus phase 545 1.83.2.2 lukem * or some pseudo phase we use to detect certain exceptions. 546 1.83.2.2 lukem */ 547 1.83.2.2 lukem 548 1.83.2.2 lukem sc->sc_phase = (sc->sc_espintr & NCRINTR_DIS) ? 549 1.83.2.2 lukem /* Disconnected */ BUSFREE_PHASE : sc->sc_espstat & NCRSTAT_PHASE; 550 1.83.2.2 lukem 551 1.83.2.2 lukem NCR_MISC(("regs[intr=%02x,stat=%02x,step=%02x,stat2=%02x] ", 552 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep, sc->sc_espstat2)); 553 1.83.2.2 lukem } 554 1.83.2.2 lukem 555 1.83.2.2 lukem /* 556 1.83.2.2 lukem * Convert Synchronous Transfer Period to chip register Clock Per Byte value. 557 1.83.2.2 lukem */ 558 1.83.2.2 lukem static inline int 559 1.83.2.2 lukem ncr53c9x_stp2cpb(sc, period) 560 1.83.2.2 lukem struct ncr53c9x_softc *sc; 561 1.83.2.2 lukem int period; 562 1.83.2.2 lukem { 563 1.83.2.2 lukem int v; 564 1.83.2.2 lukem v = (sc->sc_freq * period) / 250; 565 1.83.2.2 lukem if (ncr53c9x_cpb2stp(sc, v) < period) 566 1.83.2.2 lukem /* Correct round-down error */ 567 1.83.2.2 lukem v++; 568 1.83.2.2 lukem return (v); 569 1.83.2.2 lukem } 570 1.83.2.2 lukem 571 1.83.2.2 lukem static inline void 572 1.83.2.2 lukem ncr53c9x_setsync(sc, ti) 573 1.83.2.2 lukem struct ncr53c9x_softc *sc; 574 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 575 1.83.2.2 lukem { 576 1.83.2.2 lukem u_char syncoff, synctp; 577 1.83.2.2 lukem u_char cfg3 = sc->sc_cfg3 | ti->cfg3; 578 1.83.2.2 lukem 579 1.83.2.2 lukem if (ti->flags & T_SYNCMODE) { 580 1.83.2.2 lukem syncoff = ti->offset; 581 1.83.2.2 lukem synctp = ncr53c9x_stp2cpb(sc, ti->period); 582 1.83.2.2 lukem if (sc->sc_features & NCR_F_FASTSCSI) { 583 1.83.2.2 lukem /* 584 1.83.2.2 lukem * If the period is 200ns or less (ti->period <= 50), 585 1.83.2.2 lukem * put the chip in Fast SCSI mode. 586 1.83.2.2 lukem */ 587 1.83.2.2 lukem if (ti->period <= 50) 588 1.83.2.2 lukem /* 589 1.83.2.2 lukem * There are (at least) 4 variations of the 590 1.83.2.2 lukem * configuration 3 register. The drive attach 591 1.83.2.2 lukem * routine sets the appropriate bit to put the 592 1.83.2.2 lukem * chip into Fast SCSI mode so that it doesn't 593 1.83.2.2 lukem * have to be figured out here each time. 594 1.83.2.2 lukem */ 595 1.83.2.2 lukem cfg3 |= sc->sc_cfg3_fscsi; 596 1.83.2.2 lukem } 597 1.83.2.2 lukem 598 1.83.2.2 lukem /* 599 1.83.2.2 lukem * Am53c974 requires different SYNCTP values when the 600 1.83.2.2 lukem * FSCSI bit is off. 601 1.83.2.2 lukem */ 602 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_AM53C974 && 603 1.83.2.2 lukem (cfg3 & NCRAMDCFG3_FSCSI) == 0) 604 1.83.2.2 lukem synctp--; 605 1.83.2.2 lukem } else { 606 1.83.2.2 lukem syncoff = 0; 607 1.83.2.2 lukem synctp = 0; 608 1.83.2.2 lukem } 609 1.83.2.2 lukem 610 1.83.2.2 lukem if (sc->sc_features & NCR_F_HASCFG3) 611 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG3, cfg3); 612 1.83.2.2 lukem 613 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, syncoff); 614 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCTP, synctp); 615 1.83.2.2 lukem } 616 1.83.2.2 lukem 617 1.83.2.2 lukem /* 618 1.83.2.2 lukem * Send a command to a target, set the driver state to NCR_SELECTING 619 1.83.2.2 lukem * and let the caller take care of the rest. 620 1.83.2.2 lukem * 621 1.83.2.2 lukem * Keeping this as a function allows me to say that this may be done 622 1.83.2.2 lukem * by DMA instead of programmed I/O soon. 623 1.83.2.2 lukem */ 624 1.83.2.2 lukem void 625 1.83.2.2 lukem ncr53c9x_select(sc, ecb) 626 1.83.2.2 lukem struct ncr53c9x_softc *sc; 627 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 628 1.83.2.2 lukem { 629 1.83.2.2 lukem struct scsipi_periph *periph = ecb->xs->xs_periph; 630 1.83.2.2 lukem int target = periph->periph_target; 631 1.83.2.2 lukem int lun = periph->periph_lun; 632 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[target]; 633 1.83.2.2 lukem int tiflags = ti->flags; 634 1.83.2.2 lukem u_char *cmd; 635 1.83.2.2 lukem int clen; 636 1.83.2.2 lukem int selatn3, selatns; 637 1.83.2.2 lukem size_t dmasize; 638 1.83.2.2 lukem 639 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_select(t%d,l%d,cmd:%x,tag:%x,%x)] ", 640 1.83.2.2 lukem target, lun, ecb->cmd.cmd.opcode, ecb->tag[0], ecb->tag[1])); 641 1.83.2.2 lukem 642 1.83.2.2 lukem sc->sc_state = NCR_SELECTING; 643 1.83.2.2 lukem /* 644 1.83.2.2 lukem * Schedule the timeout now, the first time we will go away 645 1.83.2.2 lukem * expecting to come back due to an interrupt, because it is 646 1.83.2.2 lukem * always possible that the interrupt may never happen. 647 1.83.2.2 lukem */ 648 1.83.2.2 lukem if ((ecb->xs->xs_control & XS_CTL_POLL) == 0) { 649 1.83.2.6 jdolecek callout_reset(&ecb->xs->xs_callout, mstohz(ecb->timeout), 650 1.83.2.2 lukem ncr53c9x_timeout, ecb); 651 1.83.2.2 lukem } 652 1.83.2.2 lukem 653 1.83.2.2 lukem /* 654 1.83.2.2 lukem * The docs say the target register is never reset, and I 655 1.83.2.2 lukem * can't think of a better place to set it 656 1.83.2.2 lukem */ 657 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 658 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 659 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SELID, target | NCR_BUSID_HME); 660 1.83.2.2 lukem } else { 661 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SELID, target); 662 1.83.2.2 lukem } 663 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 664 1.83.2.2 lukem 665 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) != 0) { 666 1.83.2.2 lukem /* 667 1.83.2.2 lukem * For REQUEST SENSE, we should not send an IDENTIFY or 668 1.83.2.2 lukem * otherwise mangle the target. There should be no MESSAGE IN 669 1.83.2.2 lukem * phase. 670 1.83.2.2 lukem */ 671 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT) { 672 1.83.2.2 lukem /* setup DMA transfer for command */ 673 1.83.2.2 lukem dmasize = clen = ecb->clen; 674 1.83.2.2 lukem sc->sc_cmdlen = clen; 675 1.83.2.2 lukem sc->sc_cmdp = (caddr_t)&ecb->cmd.cmd; 676 1.83.2.2 lukem 677 1.83.2.2 lukem /* Program the SCSI counter */ 678 1.83.2.2 lukem NCR_SET_COUNT(sc, dmasize); 679 1.83.2.2 lukem 680 1.83.2.2 lukem if (sc->sc_rev != NCR_VARIANT_FAS366) 681 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 682 1.83.2.2 lukem 683 1.83.2.2 lukem /* And get the targets attention */ 684 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELNATN | NCRCMD_DMA); 685 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_cmdp, &sc->sc_cmdlen, 0, 686 1.83.2.2 lukem &dmasize); 687 1.83.2.2 lukem NCRDMA_GO(sc); 688 1.83.2.2 lukem } else { 689 1.83.2.2 lukem ncr53c9x_wrfifo(sc, (u_char *)&ecb->cmd.cmd, ecb->clen); 690 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELNATN); 691 1.83.2.2 lukem } 692 1.83.2.2 lukem return; 693 1.83.2.2 lukem } 694 1.83.2.2 lukem 695 1.83.2.2 lukem selatn3 = selatns = 0; 696 1.83.2.2 lukem if (ecb->tag[0] != 0) { 697 1.83.2.2 lukem if (sc->sc_features & NCR_F_SELATN3) 698 1.83.2.2 lukem /* use SELATN3 to send tag messages */ 699 1.83.2.2 lukem selatn3 = 1; 700 1.83.2.2 lukem else 701 1.83.2.2 lukem /* We don't have SELATN3; use SELATNS to send tags */ 702 1.83.2.2 lukem selatns = 1; 703 1.83.2.2 lukem } 704 1.83.2.2 lukem 705 1.83.2.2 lukem if (ti->flags & T_NEGOTIATE) { 706 1.83.2.2 lukem /* We have to use SELATNS to send sync/wide messages */ 707 1.83.2.2 lukem selatn3 = 0; 708 1.83.2.2 lukem selatns = 1; 709 1.83.2.2 lukem } 710 1.83.2.2 lukem 711 1.83.2.2 lukem cmd = (u_char *)&ecb->cmd.cmd; 712 1.83.2.2 lukem 713 1.83.2.2 lukem if (selatn3) { 714 1.83.2.2 lukem /* We'll use tags with SELATN3 */ 715 1.83.2.2 lukem clen = ecb->clen + 3; 716 1.83.2.2 lukem cmd -= 3; 717 1.83.2.2 lukem cmd[0] = MSG_IDENTIFY(lun, 1); /* msg[0] */ 718 1.83.2.2 lukem cmd[1] = ecb->tag[0]; /* msg[1] */ 719 1.83.2.2 lukem cmd[2] = ecb->tag[1]; /* msg[2] */ 720 1.83.2.2 lukem } else { 721 1.83.2.2 lukem /* We don't have tags, or will send messages with SELATNS */ 722 1.83.2.2 lukem clen = ecb->clen + 1; 723 1.83.2.2 lukem cmd -= 1; 724 1.83.2.2 lukem cmd[0] = MSG_IDENTIFY(lun, (tiflags & T_RSELECTOFF) == 0); 725 1.83.2.2 lukem } 726 1.83.2.2 lukem 727 1.83.2.2 lukem if ((sc->sc_features & NCR_F_DMASELECT) && !selatns) { 728 1.83.2.2 lukem 729 1.83.2.2 lukem /* setup DMA transfer for command */ 730 1.83.2.2 lukem dmasize = clen; 731 1.83.2.2 lukem sc->sc_cmdlen = clen; 732 1.83.2.2 lukem sc->sc_cmdp = cmd; 733 1.83.2.2 lukem 734 1.83.2.2 lukem /* Program the SCSI counter */ 735 1.83.2.2 lukem NCR_SET_COUNT(sc, dmasize); 736 1.83.2.2 lukem 737 1.83.2.2 lukem /* load the count in */ 738 1.83.2.2 lukem /* if (sc->sc_rev != NCR_VARIANT_FAS366) */ 739 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 740 1.83.2.2 lukem 741 1.83.2.2 lukem /* And get the targets attention */ 742 1.83.2.2 lukem if (selatn3) { 743 1.83.2.2 lukem sc->sc_msgout = SEND_TAG; 744 1.83.2.2 lukem sc->sc_flags |= NCR_ATN; 745 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN3 | NCRCMD_DMA); 746 1.83.2.2 lukem } else 747 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN | NCRCMD_DMA); 748 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_cmdp, &sc->sc_cmdlen, 0, &dmasize); 749 1.83.2.2 lukem NCRDMA_GO(sc); 750 1.83.2.2 lukem return; 751 1.83.2.2 lukem } 752 1.83.2.2 lukem 753 1.83.2.2 lukem /* 754 1.83.2.2 lukem * Who am I. This is where we tell the target that we are 755 1.83.2.2 lukem * happy for it to disconnect etc. 756 1.83.2.2 lukem */ 757 1.83.2.2 lukem 758 1.83.2.2 lukem /* Now get the command into the FIFO */ 759 1.83.2.2 lukem ncr53c9x_wrfifo(sc, cmd, clen); 760 1.83.2.2 lukem 761 1.83.2.2 lukem /* And get the targets attention */ 762 1.83.2.2 lukem if (selatns) { 763 1.83.2.2 lukem NCR_MISC(("SELATNS \n")); 764 1.83.2.2 lukem /* Arbitrate, select and stop after IDENTIFY message */ 765 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATNS); 766 1.83.2.2 lukem } else if (selatn3) { 767 1.83.2.2 lukem sc->sc_msgout = SEND_TAG; 768 1.83.2.2 lukem sc->sc_flags |= NCR_ATN; 769 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN3); 770 1.83.2.2 lukem } else 771 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN); 772 1.83.2.2 lukem } 773 1.83.2.2 lukem 774 1.83.2.2 lukem void 775 1.83.2.2 lukem ncr53c9x_free_ecb(sc, ecb) 776 1.83.2.2 lukem struct ncr53c9x_softc *sc; 777 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 778 1.83.2.2 lukem { 779 1.83.2.2 lukem int s; 780 1.83.2.2 lukem 781 1.83.2.2 lukem s = splbio(); 782 1.83.2.2 lukem ecb->flags = 0; 783 1.83.2.2 lukem pool_put(&ecb_pool, (void *)ecb); 784 1.83.2.2 lukem splx(s); 785 1.83.2.2 lukem return; 786 1.83.2.2 lukem } 787 1.83.2.2 lukem 788 1.83.2.2 lukem struct ncr53c9x_ecb * 789 1.83.2.2 lukem ncr53c9x_get_ecb(sc, flags) 790 1.83.2.2 lukem struct ncr53c9x_softc *sc; 791 1.83.2.2 lukem int flags; 792 1.83.2.2 lukem { 793 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 794 1.83.2.2 lukem int s; 795 1.83.2.2 lukem 796 1.83.2.2 lukem s = splbio(); 797 1.83.2.2 lukem ecb = (struct ncr53c9x_ecb *)pool_get(&ecb_pool, PR_NOWAIT); 798 1.83.2.2 lukem splx(s); 799 1.83.2.2 lukem if (ecb) { 800 1.83.2.2 lukem memset(ecb, 0, sizeof(*ecb)); 801 1.83.2.2 lukem ecb->flags |= ECB_ALLOC; 802 1.83.2.2 lukem } 803 1.83.2.2 lukem return (ecb); 804 1.83.2.2 lukem } 805 1.83.2.2 lukem 806 1.83.2.2 lukem /* 807 1.83.2.2 lukem * DRIVER FUNCTIONS CALLABLE FROM HIGHER LEVEL DRIVERS 808 1.83.2.2 lukem */ 809 1.83.2.2 lukem 810 1.83.2.2 lukem /* 811 1.83.2.2 lukem * Start a SCSI-command 812 1.83.2.2 lukem * This function is called by the higher level SCSI-driver to queue/run 813 1.83.2.2 lukem * SCSI-commands. 814 1.83.2.2 lukem */ 815 1.83.2.2 lukem 816 1.83.2.2 lukem void 817 1.83.2.2 lukem ncr53c9x_scsipi_request(chan, req, arg) 818 1.83.2.2 lukem struct scsipi_channel *chan; 819 1.83.2.2 lukem scsipi_adapter_req_t req; 820 1.83.2.2 lukem void *arg; 821 1.83.2.2 lukem { 822 1.83.2.2 lukem struct scsipi_xfer *xs; 823 1.83.2.2 lukem struct scsipi_periph *periph; 824 1.83.2.2 lukem struct ncr53c9x_softc *sc = (void *)chan->chan_adapter->adapt_dev; 825 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 826 1.83.2.2 lukem int s, flags; 827 1.83.2.2 lukem 828 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_scsipi_request] ")); 829 1.83.2.2 lukem 830 1.83.2.2 lukem switch (req) { 831 1.83.2.2 lukem case ADAPTER_REQ_RUN_XFER: 832 1.83.2.2 lukem xs = arg; 833 1.83.2.2 lukem periph = xs->xs_periph; 834 1.83.2.2 lukem flags = xs->xs_control; 835 1.83.2.2 lukem 836 1.83.2.2 lukem NCR_CMDS(("[0x%x, %d]->%d ", (int)xs->cmd->opcode, xs->cmdlen, 837 1.83.2.2 lukem periph->periph_target)); 838 1.83.2.2 lukem 839 1.83.2.2 lukem /* Get an ECB to use. */ 840 1.83.2.2 lukem ecb = ncr53c9x_get_ecb(sc, xs->xs_control); 841 1.83.2.2 lukem /* 842 1.83.2.2 lukem * This should never happen as we track resources 843 1.83.2.2 lukem * in the mid-layer. 844 1.83.2.2 lukem */ 845 1.83.2.2 lukem if (ecb == NULL) { 846 1.83.2.2 lukem scsipi_printaddr(periph); 847 1.83.2.2 lukem printf("unable to allocate ecb\n"); 848 1.83.2.2 lukem xs->error = XS_RESOURCE_SHORTAGE; 849 1.83.2.2 lukem scsipi_done(xs); 850 1.83.2.2 lukem return; 851 1.83.2.2 lukem } 852 1.83.2.2 lukem 853 1.83.2.2 lukem /* Initialize ecb */ 854 1.83.2.2 lukem ecb->xs = xs; 855 1.83.2.2 lukem ecb->timeout = xs->timeout; 856 1.83.2.2 lukem 857 1.83.2.2 lukem if (flags & XS_CTL_RESET) { 858 1.83.2.2 lukem ecb->flags |= ECB_RESET; 859 1.83.2.2 lukem ecb->clen = 0; 860 1.83.2.2 lukem ecb->dleft = 0; 861 1.83.2.2 lukem } else { 862 1.83.2.2 lukem memcpy(&ecb->cmd.cmd, xs->cmd, xs->cmdlen); 863 1.83.2.2 lukem ecb->clen = xs->cmdlen; 864 1.83.2.2 lukem ecb->daddr = xs->data; 865 1.83.2.2 lukem ecb->dleft = xs->datalen; 866 1.83.2.2 lukem } 867 1.83.2.2 lukem ecb->stat = 0; 868 1.83.2.2 lukem 869 1.83.2.2 lukem s = splbio(); 870 1.83.2.2 lukem 871 1.83.2.2 lukem TAILQ_INSERT_TAIL(&sc->ready_list, ecb, chain); 872 1.83.2.2 lukem ecb->flags |= ECB_READY; 873 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) 874 1.83.2.2 lukem ncr53c9x_sched(sc); 875 1.83.2.2 lukem 876 1.83.2.2 lukem splx(s); 877 1.83.2.2 lukem 878 1.83.2.2 lukem if ((flags & XS_CTL_POLL) == 0) 879 1.83.2.2 lukem return; 880 1.83.2.2 lukem 881 1.83.2.2 lukem /* Not allowed to use interrupts, use polling instead */ 882 1.83.2.2 lukem if (ncr53c9x_poll(sc, xs, ecb->timeout)) { 883 1.83.2.2 lukem ncr53c9x_timeout(ecb); 884 1.83.2.2 lukem if (ncr53c9x_poll(sc, xs, ecb->timeout)) 885 1.83.2.2 lukem ncr53c9x_timeout(ecb); 886 1.83.2.2 lukem } 887 1.83.2.2 lukem return; 888 1.83.2.2 lukem 889 1.83.2.2 lukem case ADAPTER_REQ_GROW_RESOURCES: 890 1.83.2.2 lukem /* XXX Not supported. */ 891 1.83.2.2 lukem return; 892 1.83.2.2 lukem 893 1.83.2.2 lukem case ADAPTER_REQ_SET_XFER_MODE: 894 1.83.2.2 lukem { 895 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 896 1.83.2.2 lukem struct scsipi_xfer_mode *xm = arg; 897 1.83.2.2 lukem 898 1.83.2.2 lukem ti = &sc->sc_tinfo[xm->xm_target]; 899 1.83.2.2 lukem ti->flags &= ~(T_NEGOTIATE|T_SYNCMODE); 900 1.83.2.2 lukem ti->period = 0; 901 1.83.2.2 lukem ti->offset = 0; 902 1.83.2.2 lukem 903 1.83.2.2 lukem if ((sc->sc_cfflags & (1<<(xm->xm_target+16))) == 0 && 904 1.83.2.2 lukem (xm->xm_mode & PERIPH_CAP_TQING)) 905 1.83.2.2 lukem ti->flags |= T_TAG; 906 1.83.2.2 lukem else 907 1.83.2.2 lukem ti->flags &= ~T_TAG; 908 1.83.2.2 lukem 909 1.83.2.2 lukem if ((xm->xm_mode & PERIPH_CAP_WIDE16) != 0) { 910 1.83.2.2 lukem NCR_MISC(("%s: target %d: wide scsi negotiation\n", 911 1.83.2.2 lukem sc->sc_dev.dv_xname, xm->xm_target)); 912 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 913 1.83.2.2 lukem ti->flags |= T_WIDE; 914 1.83.2.2 lukem ti->width = 1; 915 1.83.2.2 lukem } 916 1.83.2.2 lukem } 917 1.83.2.2 lukem 918 1.83.2.2 lukem if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 && 919 1.83.2.2 lukem (ti->flags & T_SYNCHOFF) == 0 && sc->sc_minsync != 0) { 920 1.83.2.2 lukem NCR_MISC(("%s: target %d: sync negotiation\n", 921 1.83.2.2 lukem sc->sc_dev.dv_xname, xm->xm_target)); 922 1.83.2.2 lukem ti->flags |= T_NEGOTIATE; 923 1.83.2.2 lukem ti->period = sc->sc_minsync; 924 1.83.2.2 lukem } 925 1.83.2.2 lukem /* 926 1.83.2.2 lukem * If we're not going to negotiate, send the notification 927 1.83.2.2 lukem * now, since it won't happen later. 928 1.83.2.2 lukem */ 929 1.83.2.2 lukem if ((ti->flags & T_NEGOTIATE) == 0) 930 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, xm->xm_target); 931 1.83.2.2 lukem return; 932 1.83.2.2 lukem } 933 1.83.2.2 lukem } 934 1.83.2.2 lukem } 935 1.83.2.2 lukem 936 1.83.2.2 lukem void 937 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, target) 938 1.83.2.2 lukem struct ncr53c9x_softc *sc; 939 1.83.2.2 lukem int target; 940 1.83.2.2 lukem { 941 1.83.2.2 lukem struct scsipi_xfer_mode xm; 942 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[target]; 943 1.83.2.2 lukem 944 1.83.2.2 lukem xm.xm_target = target; 945 1.83.2.2 lukem xm.xm_mode = 0; 946 1.83.2.2 lukem xm.xm_period = 0; 947 1.83.2.2 lukem xm.xm_offset = 0; 948 1.83.2.2 lukem 949 1.83.2.2 lukem if (ti->flags & T_SYNCMODE) { 950 1.83.2.2 lukem xm.xm_mode |= PERIPH_CAP_SYNC; 951 1.83.2.2 lukem xm.xm_period = ti->period; 952 1.83.2.2 lukem xm.xm_offset = ti->offset; 953 1.83.2.2 lukem } 954 1.83.2.2 lukem if (ti->width) 955 1.83.2.2 lukem xm.xm_mode |= PERIPH_CAP_WIDE16; 956 1.83.2.2 lukem 957 1.83.2.2 lukem if ((ti->flags & (T_RSELECTOFF|T_TAG)) == T_TAG) 958 1.83.2.2 lukem xm.xm_mode |= PERIPH_CAP_TQING; 959 1.83.2.2 lukem 960 1.83.2.2 lukem scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); 961 1.83.2.2 lukem } 962 1.83.2.2 lukem 963 1.83.2.2 lukem /* 964 1.83.2.2 lukem * Used when interrupt driven I/O isn't allowed, e.g. during boot. 965 1.83.2.2 lukem */ 966 1.83.2.2 lukem int 967 1.83.2.2 lukem ncr53c9x_poll(sc, xs, count) 968 1.83.2.2 lukem struct ncr53c9x_softc *sc; 969 1.83.2.2 lukem struct scsipi_xfer *xs; 970 1.83.2.2 lukem int count; 971 1.83.2.2 lukem { 972 1.83.2.2 lukem 973 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_poll] ")); 974 1.83.2.2 lukem while (count) { 975 1.83.2.2 lukem if (NCRDMA_ISINTR(sc)) { 976 1.83.2.2 lukem ncr53c9x_intr(sc); 977 1.83.2.2 lukem } 978 1.83.2.2 lukem #if alternatively 979 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT) 980 1.83.2.2 lukem ncr53c9x_intr(sc); 981 1.83.2.2 lukem #endif 982 1.83.2.2 lukem if ((xs->xs_status & XS_STS_DONE) != 0) 983 1.83.2.2 lukem return (0); 984 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) { 985 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_poll: rescheduling] ")); 986 1.83.2.2 lukem ncr53c9x_sched(sc); 987 1.83.2.2 lukem } 988 1.83.2.2 lukem DELAY(1000); 989 1.83.2.2 lukem count--; 990 1.83.2.2 lukem } 991 1.83.2.2 lukem return (1); 992 1.83.2.2 lukem } 993 1.83.2.2 lukem 994 1.83.2.2 lukem int 995 1.83.2.2 lukem ncr53c9x_ioctl(chan, cmd, arg, flag, p) 996 1.83.2.2 lukem struct scsipi_channel *chan; 997 1.83.2.2 lukem u_long cmd; 998 1.83.2.2 lukem caddr_t arg; 999 1.83.2.2 lukem int flag; 1000 1.83.2.2 lukem struct proc *p; 1001 1.83.2.2 lukem { 1002 1.83.2.2 lukem /* struct ncr53c9x_softc *sc = (void *)chan->chan_adapter->adapt_dev; */ 1003 1.83.2.2 lukem int s, error = 0; 1004 1.83.2.2 lukem 1005 1.83.2.2 lukem s = splbio(); 1006 1.83.2.2 lukem 1007 1.83.2.2 lukem switch (cmd) { 1008 1.83.2.2 lukem default: 1009 1.83.2.2 lukem error = ENOTTY; 1010 1.83.2.2 lukem break; 1011 1.83.2.2 lukem } 1012 1.83.2.2 lukem splx(s); 1013 1.83.2.2 lukem return (error); 1014 1.83.2.2 lukem } 1015 1.83.2.2 lukem 1016 1.83.2.2 lukem 1017 1.83.2.2 lukem /* 1018 1.83.2.2 lukem * LOW LEVEL SCSI UTILITIES 1019 1.83.2.2 lukem */ 1020 1.83.2.2 lukem 1021 1.83.2.2 lukem /* 1022 1.83.2.2 lukem * Schedule a scsi operation. This has now been pulled out of the interrupt 1023 1.83.2.2 lukem * handler so that we may call it from ncr53c9x_scsipi_request and 1024 1.83.2.2 lukem * ncr53c9x_done. This may save us an unecessary interrupt just to get 1025 1.83.2.2 lukem * things going. Should only be called when state == NCR_IDLE and at bio pl. 1026 1.83.2.2 lukem */ 1027 1.83.2.2 lukem void 1028 1.83.2.2 lukem ncr53c9x_sched(sc) 1029 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1030 1.83.2.2 lukem { 1031 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1032 1.83.2.2 lukem struct scsipi_periph *periph; 1033 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1034 1.83.2.2 lukem int lun; 1035 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1036 1.83.2.2 lukem int s, tag; 1037 1.83.2.2 lukem 1038 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_sched] ")); 1039 1.83.2.2 lukem if (sc->sc_state != NCR_IDLE) 1040 1.83.2.2 lukem panic("ncr53c9x_sched: not IDLE (state=%d)", sc->sc_state); 1041 1.83.2.2 lukem 1042 1.83.2.2 lukem /* 1043 1.83.2.2 lukem * Find first ecb in ready queue that is for a target/lunit 1044 1.83.2.2 lukem * combinations that is not busy. 1045 1.83.2.2 lukem */ 1046 1.83.2.2 lukem for (ecb = TAILQ_FIRST(&sc->ready_list); ecb != NULL; 1047 1.83.2.2 lukem ecb = TAILQ_NEXT(ecb, chain)) { 1048 1.83.2.2 lukem periph = ecb->xs->xs_periph; 1049 1.83.2.2 lukem ti = &sc->sc_tinfo[periph->periph_target]; 1050 1.83.2.2 lukem lun = periph->periph_lun; 1051 1.83.2.2 lukem 1052 1.83.2.2 lukem /* Select type of tag for this command */ 1053 1.83.2.2 lukem if ((ti->flags & (T_RSELECTOFF)) != 0) 1054 1.83.2.2 lukem tag = 0; 1055 1.83.2.2 lukem else if ((ti->flags & (T_TAG)) == 0) 1056 1.83.2.2 lukem tag = 0; 1057 1.83.2.2 lukem else if ((ecb->flags & ECB_SENSE) != 0) 1058 1.83.2.2 lukem tag = 0; 1059 1.83.2.2 lukem else 1060 1.83.2.2 lukem tag = ecb->xs->xs_tag_type; 1061 1.83.2.2 lukem #if 0 1062 1.83.2.2 lukem /* XXXX Use tags for polled commands? */ 1063 1.83.2.2 lukem if (ecb->xs->xs_control & XS_CTL_POLL) 1064 1.83.2.2 lukem tag = 0; 1065 1.83.2.2 lukem #endif 1066 1.83.2.2 lukem 1067 1.83.2.2 lukem s = splbio(); 1068 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1069 1.83.2.2 lukem if (li == NULL) { 1070 1.83.2.2 lukem /* Initialize LUN info and add to list. */ 1071 1.83.2.4 jdolecek if ((li = malloc(sizeof(*li), 1072 1.83.2.4 jdolecek M_DEVBUF, M_NOWAIT|M_ZERO)) == NULL) { 1073 1.83.2.2 lukem splx(s); 1074 1.83.2.2 lukem continue; 1075 1.83.2.2 lukem } 1076 1.83.2.2 lukem li->lun = lun; 1077 1.83.2.2 lukem 1078 1.83.2.2 lukem LIST_INSERT_HEAD(&ti->luns, li, link); 1079 1.83.2.2 lukem if (lun < NCR_NLUN) 1080 1.83.2.2 lukem ti->lun[lun] = li; 1081 1.83.2.2 lukem } 1082 1.83.2.2 lukem li->last_used = time.tv_sec; 1083 1.83.2.2 lukem if (tag == 0) { 1084 1.83.2.2 lukem /* Try to issue this as an un-tagged command */ 1085 1.83.2.2 lukem if (li->untagged == NULL) 1086 1.83.2.2 lukem li->untagged = ecb; 1087 1.83.2.2 lukem } 1088 1.83.2.2 lukem if (li->untagged != NULL) { 1089 1.83.2.2 lukem tag = 0; 1090 1.83.2.2 lukem if ((li->busy != 1) && li->used == 0) { 1091 1.83.2.2 lukem /* We need to issue this untagged command now */ 1092 1.83.2.2 lukem ecb = li->untagged; 1093 1.83.2.2 lukem periph = ecb->xs->xs_periph; 1094 1.83.2.2 lukem } else { 1095 1.83.2.2 lukem /* Not ready yet */ 1096 1.83.2.2 lukem splx(s); 1097 1.83.2.2 lukem continue; 1098 1.83.2.2 lukem } 1099 1.83.2.2 lukem } 1100 1.83.2.2 lukem ecb->tag[0] = tag; 1101 1.83.2.2 lukem if (tag != 0) { 1102 1.83.2.2 lukem li->queued[ecb->xs->xs_tag_id] = ecb; 1103 1.83.2.2 lukem ecb->tag[1] = ecb->xs->xs_tag_id; 1104 1.83.2.2 lukem li->used++; 1105 1.83.2.2 lukem } 1106 1.83.2.2 lukem splx(s); 1107 1.83.2.2 lukem if (li->untagged != NULL && (li->busy != 1)) { 1108 1.83.2.2 lukem li->busy = 1; 1109 1.83.2.2 lukem TAILQ_REMOVE(&sc->ready_list, ecb, chain); 1110 1.83.2.2 lukem ecb->flags &= ~ECB_READY; 1111 1.83.2.2 lukem sc->sc_nexus = ecb; 1112 1.83.2.2 lukem ncr53c9x_select(sc, ecb); 1113 1.83.2.2 lukem break; 1114 1.83.2.2 lukem } 1115 1.83.2.2 lukem if (li->untagged == NULL && tag != 0) { 1116 1.83.2.2 lukem TAILQ_REMOVE(&sc->ready_list, ecb, chain); 1117 1.83.2.2 lukem ecb->flags &= ~ECB_READY; 1118 1.83.2.2 lukem sc->sc_nexus = ecb; 1119 1.83.2.2 lukem ncr53c9x_select(sc, ecb); 1120 1.83.2.2 lukem break; 1121 1.83.2.2 lukem } else 1122 1.83.2.2 lukem NCR_MISC(("%d:%d busy\n", 1123 1.83.2.2 lukem periph->periph_target, 1124 1.83.2.2 lukem periph->periph_lun)); 1125 1.83.2.2 lukem } 1126 1.83.2.2 lukem } 1127 1.83.2.2 lukem 1128 1.83.2.2 lukem void 1129 1.83.2.2 lukem ncr53c9x_sense(sc, ecb) 1130 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1131 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1132 1.83.2.2 lukem { 1133 1.83.2.2 lukem struct scsipi_xfer *xs = ecb->xs; 1134 1.83.2.2 lukem struct scsipi_periph *periph = xs->xs_periph; 1135 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[periph->periph_target]; 1136 1.83.2.2 lukem struct scsipi_sense *ss = (void *)&ecb->cmd.cmd; 1137 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1138 1.83.2.2 lukem int lun = periph->periph_lun; 1139 1.83.2.2 lukem 1140 1.83.2.2 lukem NCR_MISC(("requesting sense ")); 1141 1.83.2.2 lukem /* Next, setup a request sense command block */ 1142 1.83.2.2 lukem memset(ss, 0, sizeof(*ss)); 1143 1.83.2.2 lukem ss->opcode = REQUEST_SENSE; 1144 1.83.2.2 lukem ss->byte2 = periph->periph_lun << SCSI_CMD_LUN_SHIFT; 1145 1.83.2.2 lukem ss->length = sizeof(struct scsipi_sense_data); 1146 1.83.2.2 lukem ecb->clen = sizeof(*ss); 1147 1.83.2.2 lukem ecb->daddr = (char *)&xs->sense.scsi_sense; 1148 1.83.2.2 lukem ecb->dleft = sizeof(struct scsipi_sense_data); 1149 1.83.2.2 lukem ecb->flags |= ECB_SENSE; 1150 1.83.2.2 lukem ecb->timeout = NCR_SENSE_TIMEOUT; 1151 1.83.2.2 lukem ti->senses++; 1152 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1153 1.83.2.2 lukem if (li->busy) 1154 1.83.2.2 lukem li->busy = 0; 1155 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb); 1156 1.83.2.2 lukem li->untagged = ecb; /* must be executed first to fix C/A */ 1157 1.83.2.2 lukem li->busy = 2; 1158 1.83.2.2 lukem if (ecb == sc->sc_nexus) { 1159 1.83.2.2 lukem ncr53c9x_select(sc, ecb); 1160 1.83.2.2 lukem } else { 1161 1.83.2.2 lukem TAILQ_INSERT_HEAD(&sc->ready_list, ecb, chain); 1162 1.83.2.2 lukem ecb->flags |= ECB_READY; 1163 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) 1164 1.83.2.2 lukem ncr53c9x_sched(sc); 1165 1.83.2.2 lukem } 1166 1.83.2.2 lukem } 1167 1.83.2.2 lukem 1168 1.83.2.2 lukem /* 1169 1.83.2.2 lukem * POST PROCESSING OF SCSI_CMD (usually current) 1170 1.83.2.2 lukem */ 1171 1.83.2.2 lukem void 1172 1.83.2.2 lukem ncr53c9x_done(sc, ecb) 1173 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1174 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1175 1.83.2.2 lukem { 1176 1.83.2.2 lukem struct scsipi_xfer *xs = ecb->xs; 1177 1.83.2.2 lukem struct scsipi_periph *periph = xs->xs_periph; 1178 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[periph->periph_target]; 1179 1.83.2.2 lukem int lun = periph->periph_lun; 1180 1.83.2.2 lukem struct ncr53c9x_linfo *li = TINFO_LUN(ti, lun); 1181 1.83.2.2 lukem 1182 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_done(error:%x)] ", xs->error)); 1183 1.83.2.2 lukem 1184 1.83.2.2 lukem callout_stop(&ecb->xs->xs_callout); 1185 1.83.2.2 lukem 1186 1.83.2.2 lukem /* 1187 1.83.2.2 lukem * Now, if we've come here with no error code, i.e. we've kept the 1188 1.83.2.2 lukem * initial XS_NOERROR, and the status code signals that we should 1189 1.83.2.2 lukem * check sense, we'll need to set up a request sense cmd block and 1190 1.83.2.2 lukem * push the command back into the ready queue *before* any other 1191 1.83.2.2 lukem * commands for this target/lunit, else we lose the sense info. 1192 1.83.2.2 lukem * We don't support chk sense conditions for the request sense cmd. 1193 1.83.2.2 lukem */ 1194 1.83.2.2 lukem if (xs->error == XS_NOERROR) { 1195 1.83.2.2 lukem xs->status = ecb->stat; 1196 1.83.2.2 lukem if ((ecb->flags & ECB_ABORT) != 0) { 1197 1.83.2.2 lukem xs->error = XS_TIMEOUT; 1198 1.83.2.2 lukem } else if ((ecb->flags & ECB_SENSE) != 0) { 1199 1.83.2.2 lukem xs->error = XS_SENSE; 1200 1.83.2.2 lukem } else if ((ecb->stat & ST_MASK) == SCSI_CHECK) { 1201 1.83.2.2 lukem /* First, save the return values */ 1202 1.83.2.2 lukem xs->resid = ecb->dleft; 1203 1.83.2.2 lukem ncr53c9x_sense(sc, ecb); 1204 1.83.2.2 lukem return; 1205 1.83.2.2 lukem } else { 1206 1.83.2.2 lukem xs->resid = ecb->dleft; 1207 1.83.2.2 lukem } 1208 1.83.2.2 lukem if (xs->status == SCSI_QUEUE_FULL || xs->status == XS_BUSY) 1209 1.83.2.2 lukem xs->error = XS_BUSY; 1210 1.83.2.2 lukem } 1211 1.83.2.2 lukem 1212 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1213 1.83.2.2 lukem if (ncr53c9x_debug & NCR_SHOWMISC) { 1214 1.83.2.2 lukem if (xs->resid != 0) 1215 1.83.2.2 lukem printf("resid=%d ", xs->resid); 1216 1.83.2.2 lukem if (xs->error == XS_SENSE) 1217 1.83.2.2 lukem printf("sense=0x%02x\n", 1218 1.83.2.2 lukem xs->sense.scsi_sense.error_code); 1219 1.83.2.2 lukem else 1220 1.83.2.2 lukem printf("error=%d\n", xs->error); 1221 1.83.2.2 lukem } 1222 1.83.2.2 lukem #endif 1223 1.83.2.2 lukem 1224 1.83.2.2 lukem /* 1225 1.83.2.2 lukem * Remove the ECB from whatever queue it's on. 1226 1.83.2.2 lukem */ 1227 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb); 1228 1.83.2.2 lukem if (ecb == sc->sc_nexus) { 1229 1.83.2.2 lukem sc->sc_nexus = NULL; 1230 1.83.2.2 lukem if (sc->sc_state != NCR_CLEANING) { 1231 1.83.2.2 lukem sc->sc_state = NCR_IDLE; 1232 1.83.2.2 lukem ncr53c9x_sched(sc); 1233 1.83.2.2 lukem } 1234 1.83.2.2 lukem } 1235 1.83.2.2 lukem 1236 1.83.2.2 lukem if (xs->error == XS_SELTIMEOUT) { 1237 1.83.2.2 lukem /* Selection timeout -- discard this LUN if empty */ 1238 1.83.2.2 lukem if (li->untagged == NULL && li->used == 0) { 1239 1.83.2.2 lukem if (lun < NCR_NLUN) 1240 1.83.2.2 lukem ti->lun[lun] = NULL; 1241 1.83.2.2 lukem LIST_REMOVE(li, link); 1242 1.83.2.2 lukem free(li, M_DEVBUF); 1243 1.83.2.2 lukem } 1244 1.83.2.2 lukem } 1245 1.83.2.2 lukem 1246 1.83.2.2 lukem ncr53c9x_free_ecb(sc, ecb); 1247 1.83.2.2 lukem ti->cmds++; 1248 1.83.2.2 lukem scsipi_done(xs); 1249 1.83.2.2 lukem } 1250 1.83.2.2 lukem 1251 1.83.2.2 lukem void 1252 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb) 1253 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1254 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1255 1.83.2.2 lukem { 1256 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = 1257 1.83.2.2 lukem &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1258 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1259 1.83.2.2 lukem int64_t lun = ecb->xs->xs_periph->periph_lun; 1260 1.83.2.2 lukem 1261 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1262 1.83.2.2 lukem #ifdef DIAGNOSTIC 1263 1.83.2.2 lukem if (li == NULL || li->lun != lun) 1264 1.83.2.2 lukem panic("ncr53c9x_dequeue: lun %qx for ecb %p does not exist\n", 1265 1.83.2.2 lukem (long long) lun, ecb); 1266 1.83.2.2 lukem #endif 1267 1.83.2.2 lukem if (li->untagged == ecb) { 1268 1.83.2.2 lukem li->busy = 0; 1269 1.83.2.2 lukem li->untagged = NULL; 1270 1.83.2.2 lukem } 1271 1.83.2.2 lukem if (ecb->tag[0] && li->queued[ecb->tag[1]] != NULL) { 1272 1.83.2.2 lukem #ifdef DIAGNOSTIC 1273 1.83.2.2 lukem if (li->queued[ecb->tag[1]] != NULL && 1274 1.83.2.2 lukem (li->queued[ecb->tag[1]] != ecb)) 1275 1.83.2.2 lukem panic("ncr53c9x_dequeue: slot %d for lun %qx has %p " 1276 1.83.2.2 lukem "instead of ecb %p\n", ecb->tag[1], 1277 1.83.2.2 lukem (long long) lun, 1278 1.83.2.2 lukem li->queued[ecb->tag[1]], ecb); 1279 1.83.2.2 lukem #endif 1280 1.83.2.2 lukem li->queued[ecb->tag[1]] = NULL; 1281 1.83.2.2 lukem li->used--; 1282 1.83.2.2 lukem } 1283 1.83.2.2 lukem 1284 1.83.2.2 lukem if ((ecb->flags & ECB_READY) != 0) { 1285 1.83.2.2 lukem ecb->flags &= ~ECB_READY; 1286 1.83.2.2 lukem TAILQ_REMOVE(&sc->ready_list, ecb, chain); 1287 1.83.2.2 lukem } 1288 1.83.2.2 lukem } 1289 1.83.2.2 lukem 1290 1.83.2.2 lukem /* 1291 1.83.2.2 lukem * INTERRUPT/PROTOCOL ENGINE 1292 1.83.2.2 lukem */ 1293 1.83.2.2 lukem 1294 1.83.2.2 lukem /* 1295 1.83.2.2 lukem * Schedule an outgoing message by prioritizing it, and asserting 1296 1.83.2.2 lukem * attention on the bus. We can only do this when we are the initiator 1297 1.83.2.2 lukem * else there will be an illegal command interrupt. 1298 1.83.2.2 lukem */ 1299 1.83.2.2 lukem #define ncr53c9x_sched_msgout(m) \ 1300 1.83.2.2 lukem do { \ 1301 1.83.2.2 lukem NCR_MISC(("ncr53c9x_sched_msgout %x %d", m, __LINE__)); \ 1302 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SETATN); \ 1303 1.83.2.2 lukem sc->sc_flags |= NCR_ATN; \ 1304 1.83.2.2 lukem sc->sc_msgpriq |= (m); \ 1305 1.83.2.2 lukem } while (0) 1306 1.83.2.2 lukem 1307 1.83.2.2 lukem static void 1308 1.83.2.2 lukem ncr53c9x_flushfifo(struct ncr53c9x_softc *sc) 1309 1.83.2.2 lukem { 1310 1.83.2.2 lukem NCR_MISC(("[flushfifo] ")); 1311 1.83.2.2 lukem 1312 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 1313 1.83.2.2 lukem 1314 1.83.2.2 lukem if (sc->sc_phase == COMMAND_PHASE || 1315 1.83.2.2 lukem sc->sc_phase == MESSAGE_OUT_PHASE) 1316 1.83.2.2 lukem DELAY(2); 1317 1.83.2.2 lukem } 1318 1.83.2.2 lukem 1319 1.83.2.2 lukem static int 1320 1.83.2.2 lukem ncr53c9x_rdfifo(struct ncr53c9x_softc *sc, int how) 1321 1.83.2.2 lukem { 1322 1.83.2.2 lukem int i, n; 1323 1.83.2.2 lukem u_char *buf; 1324 1.83.2.2 lukem 1325 1.83.2.2 lukem switch(how) { 1326 1.83.2.2 lukem case NCR_RDFIFO_START: 1327 1.83.2.2 lukem buf = sc->sc_imess; 1328 1.83.2.2 lukem sc->sc_imlen = 0; 1329 1.83.2.2 lukem break; 1330 1.83.2.2 lukem case NCR_RDFIFO_CONTINUE: 1331 1.83.2.2 lukem buf = sc->sc_imess + sc->sc_imlen; 1332 1.83.2.2 lukem break; 1333 1.83.2.2 lukem default: 1334 1.83.2.2 lukem panic("ncr53c9x_rdfifo: bad flag\n"); 1335 1.83.2.2 lukem break; 1336 1.83.2.2 lukem } 1337 1.83.2.2 lukem 1338 1.83.2.2 lukem /* 1339 1.83.2.2 lukem * XXX buffer (sc_imess) size for message 1340 1.83.2.2 lukem */ 1341 1.83.2.2 lukem 1342 1.83.2.2 lukem n = NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF; 1343 1.83.2.2 lukem 1344 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 1345 1.83.2.2 lukem n *= 2; 1346 1.83.2.2 lukem 1347 1.83.2.2 lukem for (i = 0; i < n; i++) 1348 1.83.2.2 lukem buf[i] = NCR_READ_REG(sc, NCR_FIFO); 1349 1.83.2.2 lukem 1350 1.83.2.2 lukem if (sc->sc_espstat2 & NCRFAS_STAT2_ISHUTTLE) { 1351 1.83.2.2 lukem 1352 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_FIFO, 0); 1353 1.83.2.2 lukem buf[i++] = NCR_READ_REG(sc, NCR_FIFO); 1354 1.83.2.2 lukem 1355 1.83.2.2 lukem NCR_READ_REG(sc, NCR_FIFO); 1356 1.83.2.2 lukem 1357 1.83.2.2 lukem ncr53c9x_flushfifo(sc); 1358 1.83.2.2 lukem } 1359 1.83.2.2 lukem } else { 1360 1.83.2.2 lukem for (i = 0; i < n; i++) 1361 1.83.2.2 lukem buf[i] = NCR_READ_REG(sc, NCR_FIFO); 1362 1.83.2.2 lukem } 1363 1.83.2.2 lukem 1364 1.83.2.2 lukem sc->sc_imlen += i; 1365 1.83.2.2 lukem 1366 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1367 1.83.2.2 lukem { 1368 1.83.2.2 lukem int j; 1369 1.83.2.2 lukem 1370 1.83.2.2 lukem NCR_TRACE(("\n[rdfifo %s (%d):", 1371 1.83.2.2 lukem (how == NCR_RDFIFO_START) ? "start" : "cont", 1372 1.83.2.2 lukem (int)sc->sc_imlen)); 1373 1.83.2.2 lukem if (ncr53c9x_debug & NCR_SHOWTRAC) { 1374 1.83.2.2 lukem for (j = 0; j < sc->sc_imlen; j++) 1375 1.83.2.2 lukem printf(" %02x", sc->sc_imess[j]); 1376 1.83.2.2 lukem printf("]\n"); 1377 1.83.2.2 lukem } 1378 1.83.2.2 lukem } 1379 1.83.2.2 lukem #endif 1380 1.83.2.2 lukem return sc->sc_imlen; 1381 1.83.2.2 lukem } 1382 1.83.2.2 lukem 1383 1.83.2.2 lukem static void 1384 1.83.2.2 lukem ncr53c9x_wrfifo(struct ncr53c9x_softc *sc, u_char *p, int len) 1385 1.83.2.2 lukem { 1386 1.83.2.2 lukem int i; 1387 1.83.2.2 lukem 1388 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1389 1.83.2.2 lukem NCR_MISC(("[wrfifo(%d):", len)); 1390 1.83.2.2 lukem if (ncr53c9x_debug & NCR_SHOWTRAC) { 1391 1.83.2.2 lukem for (i = 0; i < len; i++) 1392 1.83.2.2 lukem printf(" %02x", p[i]); 1393 1.83.2.2 lukem printf("]\n"); 1394 1.83.2.2 lukem } 1395 1.83.2.2 lukem #endif 1396 1.83.2.2 lukem 1397 1.83.2.2 lukem for (i = 0; i < len; i++) { 1398 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_FIFO, p[i]); 1399 1.83.2.2 lukem 1400 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) 1401 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_FIFO, 0); 1402 1.83.2.2 lukem } 1403 1.83.2.2 lukem } 1404 1.83.2.2 lukem 1405 1.83.2.2 lukem int 1406 1.83.2.2 lukem ncr53c9x_reselect(sc, message, tagtype, tagid) 1407 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1408 1.83.2.2 lukem int message; 1409 1.83.2.2 lukem int tagtype, tagid; 1410 1.83.2.2 lukem { 1411 1.83.2.2 lukem u_char selid, target, lun; 1412 1.83.2.2 lukem struct ncr53c9x_ecb *ecb = NULL; 1413 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1414 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1415 1.83.2.2 lukem 1416 1.83.2.2 lukem 1417 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 1418 1.83.2.2 lukem target = sc->sc_selid; 1419 1.83.2.2 lukem } else { 1420 1.83.2.2 lukem /* 1421 1.83.2.2 lukem * The SCSI chip made a snapshot of the data bus 1422 1.83.2.2 lukem * while the reselection was being negotiated. 1423 1.83.2.2 lukem * This enables us to determine which target did 1424 1.83.2.2 lukem * the reselect. 1425 1.83.2.2 lukem */ 1426 1.83.2.2 lukem selid = sc->sc_selid & ~(1 << sc->sc_id); 1427 1.83.2.2 lukem if (selid & (selid - 1)) { 1428 1.83.2.2 lukem printf("%s: reselect with invalid selid %02x;" 1429 1.83.2.2 lukem " sending DEVICE RESET\n", 1430 1.83.2.2 lukem sc->sc_dev.dv_xname, selid); 1431 1.83.2.2 lukem goto reset; 1432 1.83.2.2 lukem } 1433 1.83.2.2 lukem 1434 1.83.2.2 lukem target = ffs(selid) - 1; 1435 1.83.2.2 lukem } 1436 1.83.2.2 lukem lun = message & 0x07; 1437 1.83.2.2 lukem 1438 1.83.2.2 lukem /* 1439 1.83.2.2 lukem * Search wait queue for disconnected cmd 1440 1.83.2.2 lukem * The list should be short, so I haven't bothered with 1441 1.83.2.2 lukem * any more sophisticated structures than a simple 1442 1.83.2.2 lukem * singly linked list. 1443 1.83.2.2 lukem */ 1444 1.83.2.2 lukem ti = &sc->sc_tinfo[target]; 1445 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1446 1.83.2.2 lukem 1447 1.83.2.2 lukem /* 1448 1.83.2.2 lukem * We can get as far as the LUN with the IDENTIFY 1449 1.83.2.2 lukem * message. Check to see if we're running an 1450 1.83.2.2 lukem * un-tagged command. Otherwise ack the IDENTIFY 1451 1.83.2.2 lukem * and wait for a tag message. 1452 1.83.2.2 lukem */ 1453 1.83.2.2 lukem if (li != NULL) { 1454 1.83.2.2 lukem if (li->untagged != NULL && li->busy) 1455 1.83.2.2 lukem ecb = li->untagged; 1456 1.83.2.2 lukem else if (tagtype != MSG_SIMPLE_Q_TAG) { 1457 1.83.2.2 lukem /* Wait for tag to come by */ 1458 1.83.2.2 lukem sc->sc_state = NCR_IDENTIFIED; 1459 1.83.2.2 lukem return (0); 1460 1.83.2.2 lukem } else if (tagtype) 1461 1.83.2.2 lukem ecb = li->queued[tagid]; 1462 1.83.2.2 lukem } 1463 1.83.2.2 lukem if (ecb == NULL) { 1464 1.83.2.2 lukem printf("%s: reselect from target %d lun %d tag %x:%x " 1465 1.83.2.2 lukem "with no nexus; sending ABORT\n", 1466 1.83.2.2 lukem sc->sc_dev.dv_xname, target, lun, tagtype, tagid); 1467 1.83.2.2 lukem goto abort; 1468 1.83.2.2 lukem } 1469 1.83.2.2 lukem 1470 1.83.2.2 lukem /* Make this nexus active again. */ 1471 1.83.2.2 lukem sc->sc_state = NCR_CONNECTED; 1472 1.83.2.2 lukem sc->sc_nexus = ecb; 1473 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1474 1.83.2.2 lukem 1475 1.83.2.2 lukem if (ecb->flags & ECB_RESET) 1476 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_DEV_RESET); 1477 1.83.2.2 lukem else if (ecb->flags & ECB_ABORT) 1478 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 1479 1.83.2.2 lukem 1480 1.83.2.2 lukem /* Do an implicit RESTORE POINTERS. */ 1481 1.83.2.2 lukem sc->sc_dp = ecb->daddr; 1482 1.83.2.2 lukem sc->sc_dleft = ecb->dleft; 1483 1.83.2.2 lukem 1484 1.83.2.2 lukem return (0); 1485 1.83.2.2 lukem 1486 1.83.2.2 lukem reset: 1487 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_DEV_RESET); 1488 1.83.2.2 lukem return (1); 1489 1.83.2.2 lukem 1490 1.83.2.2 lukem abort: 1491 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 1492 1.83.2.2 lukem return (1); 1493 1.83.2.2 lukem } 1494 1.83.2.2 lukem 1495 1.83.2.2 lukem static inline int 1496 1.83.2.2 lukem __verify_msg_format(u_char *p, int len) 1497 1.83.2.2 lukem { 1498 1.83.2.2 lukem 1499 1.83.2.3 thorpej if (len == 1 && MSG_IS1BYTE(p[0])) 1500 1.83.2.2 lukem return 1; 1501 1.83.2.3 thorpej if (len == 2 && MSG_IS2BYTE(p[0])) 1502 1.83.2.2 lukem return 1; 1503 1.83.2.3 thorpej if (len >= 3 && MSG_ISEXTENDED(p[0]) && 1504 1.83.2.2 lukem len == p[1] + 2) 1505 1.83.2.2 lukem return 1; 1506 1.83.2.2 lukem 1507 1.83.2.2 lukem return 0; 1508 1.83.2.2 lukem } 1509 1.83.2.2 lukem 1510 1.83.2.2 lukem /* 1511 1.83.2.2 lukem * Get an incoming message as initiator. 1512 1.83.2.2 lukem * 1513 1.83.2.2 lukem * The SCSI bus must already be in MESSAGE_IN_PHASE and there is a 1514 1.83.2.2 lukem * byte in the FIFO 1515 1.83.2.2 lukem */ 1516 1.83.2.2 lukem void 1517 1.83.2.2 lukem ncr53c9x_msgin(sc) 1518 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1519 1.83.2.2 lukem { 1520 1.83.2.2 lukem 1521 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_msgin(curmsglen:%ld)] ", (long)sc->sc_imlen)); 1522 1.83.2.2 lukem 1523 1.83.2.2 lukem if (sc->sc_imlen == 0) { 1524 1.83.2.2 lukem printf("%s: msgin: no msg byte available\n", 1525 1.83.2.2 lukem sc->sc_dev.dv_xname); 1526 1.83.2.2 lukem return; 1527 1.83.2.2 lukem } 1528 1.83.2.2 lukem 1529 1.83.2.2 lukem /* 1530 1.83.2.2 lukem * Prepare for a new message. A message should (according 1531 1.83.2.2 lukem * to the SCSI standard) be transmitted in one single 1532 1.83.2.2 lukem * MESSAGE_IN_PHASE. If we have been in some other phase, 1533 1.83.2.2 lukem * then this is a new message. 1534 1.83.2.2 lukem */ 1535 1.83.2.2 lukem if (sc->sc_prevphase != MESSAGE_IN_PHASE && 1536 1.83.2.2 lukem sc->sc_state != NCR_RESELECTED) { 1537 1.83.2.2 lukem printf("%s: phase change, dropping message, " 1538 1.83.2.2 lukem "prev %d, state %d\n", 1539 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_prevphase, sc->sc_state); 1540 1.83.2.2 lukem sc->sc_flags &= ~NCR_DROP_MSGI; 1541 1.83.2.2 lukem sc->sc_imlen = 0; 1542 1.83.2.2 lukem } 1543 1.83.2.2 lukem 1544 1.83.2.2 lukem NCR_TRACE(("<msgbyte:0x%02x>", sc->sc_imess[0])); 1545 1.83.2.2 lukem 1546 1.83.2.2 lukem /* 1547 1.83.2.2 lukem * If we're going to reject the message, don't bother storing 1548 1.83.2.2 lukem * the incoming bytes. But still, we need to ACK them. 1549 1.83.2.2 lukem */ 1550 1.83.2.2 lukem if ((sc->sc_flags & NCR_DROP_MSGI) != 0) { 1551 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 1552 1.83.2.2 lukem printf("<dropping msg byte %x>", sc->sc_imess[sc->sc_imlen]); 1553 1.83.2.2 lukem return; 1554 1.83.2.2 lukem } 1555 1.83.2.2 lukem 1556 1.83.2.2 lukem if (sc->sc_imlen >= NCR_MAX_MSG_LEN) { 1557 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_REJECT); 1558 1.83.2.2 lukem sc->sc_flags |= NCR_DROP_MSGI; 1559 1.83.2.2 lukem } else { 1560 1.83.2.2 lukem u_char *pb; 1561 1.83.2.2 lukem int plen; 1562 1.83.2.2 lukem 1563 1.83.2.2 lukem switch (sc->sc_state) { 1564 1.83.2.2 lukem /* 1565 1.83.2.2 lukem * if received message is the first of reselection 1566 1.83.2.2 lukem * then first byte is selid, and then message 1567 1.83.2.2 lukem */ 1568 1.83.2.2 lukem case NCR_RESELECTED: 1569 1.83.2.2 lukem pb = sc->sc_imess + 1; 1570 1.83.2.2 lukem plen = sc->sc_imlen - 1; 1571 1.83.2.2 lukem break; 1572 1.83.2.2 lukem default: 1573 1.83.2.2 lukem pb = sc->sc_imess; 1574 1.83.2.2 lukem plen = sc->sc_imlen; 1575 1.83.2.2 lukem break; 1576 1.83.2.2 lukem } 1577 1.83.2.2 lukem 1578 1.83.2.2 lukem if (__verify_msg_format(pb, plen)) 1579 1.83.2.2 lukem goto gotit; 1580 1.83.2.2 lukem } 1581 1.83.2.2 lukem 1582 1.83.2.2 lukem /* Ack what we have so far */ 1583 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 1584 1.83.2.2 lukem return; 1585 1.83.2.2 lukem 1586 1.83.2.2 lukem gotit: 1587 1.83.2.2 lukem NCR_MSGS(("gotmsg(%x) state %d", sc->sc_imess[0], sc->sc_state)); 1588 1.83.2.2 lukem /* we got complete message, flush the imess, */ 1589 1.83.2.2 lukem /* XXX nobody uses imlen below */ 1590 1.83.2.2 lukem sc->sc_imlen = 0; 1591 1.83.2.2 lukem /* 1592 1.83.2.2 lukem * Now we should have a complete message (1 byte, 2 byte 1593 1.83.2.2 lukem * and moderately long extended messages). We only handle 1594 1.83.2.2 lukem * extended messages which total length is shorter than 1595 1.83.2.2 lukem * NCR_MAX_MSG_LEN. Longer messages will be amputated. 1596 1.83.2.2 lukem */ 1597 1.83.2.2 lukem switch (sc->sc_state) { 1598 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1599 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1600 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1601 1.83.2.2 lukem int lun; 1602 1.83.2.2 lukem 1603 1.83.2.2 lukem case NCR_CONNECTED: 1604 1.83.2.2 lukem ecb = sc->sc_nexus; 1605 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1606 1.83.2.2 lukem 1607 1.83.2.2 lukem switch (sc->sc_imess[0]) { 1608 1.83.2.2 lukem case MSG_CMDCOMPLETE: 1609 1.83.2.2 lukem NCR_MSGS(("cmdcomplete ")); 1610 1.83.2.2 lukem if (sc->sc_dleft < 0) { 1611 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1612 1.83.2.2 lukem printf("got %ld extra bytes\n", 1613 1.83.2.2 lukem -(long)sc->sc_dleft); 1614 1.83.2.2 lukem sc->sc_dleft = 0; 1615 1.83.2.2 lukem } 1616 1.83.2.2 lukem ecb->dleft = (ecb->flags & ECB_TENTATIVE_DONE) ? 1617 1.83.2.2 lukem 0 : sc->sc_dleft; 1618 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) == 0) 1619 1.83.2.2 lukem ecb->xs->resid = ecb->dleft; 1620 1.83.2.2 lukem sc->sc_state = NCR_CMDCOMPLETE; 1621 1.83.2.2 lukem break; 1622 1.83.2.2 lukem 1623 1.83.2.2 lukem case MSG_MESSAGE_REJECT: 1624 1.83.2.2 lukem NCR_MSGS(("msg reject (msgout=%x) ", sc->sc_msgout)); 1625 1.83.2.2 lukem switch (sc->sc_msgout) { 1626 1.83.2.2 lukem case SEND_TAG: 1627 1.83.2.2 lukem /* 1628 1.83.2.2 lukem * Target does not like tagged queuing. 1629 1.83.2.2 lukem * - Flush the command queue 1630 1.83.2.2 lukem * - Disable tagged queuing for the target 1631 1.83.2.2 lukem * - Dequeue ecb from the queued array. 1632 1.83.2.2 lukem */ 1633 1.83.2.2 lukem printf("%s: tagged queuing rejected: " 1634 1.83.2.2 lukem "target %d\n", 1635 1.83.2.2 lukem sc->sc_dev.dv_xname, 1636 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1637 1.83.2.2 lukem 1638 1.83.2.2 lukem NCR_MSGS(("(rejected sent tag)")); 1639 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 1640 1.83.2.2 lukem DELAY(1); 1641 1.83.2.2 lukem ti->flags &= ~T_TAG; 1642 1.83.2.2 lukem lun = ecb->xs->xs_periph->periph_lun; 1643 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1644 1.83.2.2 lukem if (ecb->tag[0] && 1645 1.83.2.2 lukem li->queued[ecb->tag[1]] != NULL) { 1646 1.83.2.2 lukem li->queued[ecb->tag[1]] = NULL; 1647 1.83.2.2 lukem li->used--; 1648 1.83.2.2 lukem } 1649 1.83.2.2 lukem ecb->tag[0] = ecb->tag[1] = 0; 1650 1.83.2.2 lukem li->untagged = ecb; 1651 1.83.2.2 lukem li->busy = 1; 1652 1.83.2.2 lukem break; 1653 1.83.2.2 lukem 1654 1.83.2.2 lukem case SEND_SDTR: 1655 1.83.2.2 lukem printf("%s: sync transfer rejected: " 1656 1.83.2.2 lukem "target %d\n", 1657 1.83.2.2 lukem sc->sc_dev.dv_xname, 1658 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1659 1.83.2.2 lukem 1660 1.83.2.2 lukem sc->sc_flags &= ~NCR_SYNCHNEGO; 1661 1.83.2.2 lukem ti->flags &= ~(T_NEGOTIATE | T_SYNCMODE); 1662 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1663 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, 1664 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1665 1.83.2.2 lukem break; 1666 1.83.2.2 lukem 1667 1.83.2.2 lukem case SEND_WDTR: 1668 1.83.2.2 lukem printf("%s: wide transfer rejected: " 1669 1.83.2.2 lukem "target %d\n", 1670 1.83.2.2 lukem sc->sc_dev.dv_xname, 1671 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1672 1.83.2.2 lukem ti->flags &= ~T_WIDE; 1673 1.83.2.2 lukem ti->width = 0; 1674 1.83.2.2 lukem break; 1675 1.83.2.2 lukem 1676 1.83.2.2 lukem case SEND_INIT_DET_ERR: 1677 1.83.2.2 lukem goto abort; 1678 1.83.2.2 lukem } 1679 1.83.2.2 lukem break; 1680 1.83.2.2 lukem 1681 1.83.2.2 lukem case MSG_NOOP: 1682 1.83.2.2 lukem NCR_MSGS(("noop ")); 1683 1.83.2.2 lukem break; 1684 1.83.2.2 lukem 1685 1.83.2.2 lukem case MSG_HEAD_OF_Q_TAG: 1686 1.83.2.2 lukem case MSG_SIMPLE_Q_TAG: 1687 1.83.2.2 lukem case MSG_ORDERED_Q_TAG: 1688 1.83.2.2 lukem NCR_MSGS(("TAG %x:%x", 1689 1.83.2.2 lukem sc->sc_imess[0], sc->sc_imess[1])); 1690 1.83.2.2 lukem break; 1691 1.83.2.2 lukem 1692 1.83.2.2 lukem case MSG_DISCONNECT: 1693 1.83.2.2 lukem NCR_MSGS(("disconnect ")); 1694 1.83.2.2 lukem ti->dconns++; 1695 1.83.2.2 lukem sc->sc_state = NCR_DISCONNECT; 1696 1.83.2.2 lukem 1697 1.83.2.2 lukem /* 1698 1.83.2.2 lukem * Mark the fact that all bytes have moved. The 1699 1.83.2.2 lukem * target may not bother to do a SAVE POINTERS 1700 1.83.2.2 lukem * at this stage. This flag will set the residual 1701 1.83.2.2 lukem * count to zero on MSG COMPLETE. 1702 1.83.2.2 lukem */ 1703 1.83.2.2 lukem if (sc->sc_dleft == 0) 1704 1.83.2.2 lukem ecb->flags |= ECB_TENTATIVE_DONE; 1705 1.83.2.2 lukem 1706 1.83.2.2 lukem break; 1707 1.83.2.2 lukem 1708 1.83.2.2 lukem case MSG_SAVEDATAPOINTER: 1709 1.83.2.2 lukem NCR_MSGS(("save datapointer ")); 1710 1.83.2.2 lukem ecb->daddr = sc->sc_dp; 1711 1.83.2.2 lukem ecb->dleft = sc->sc_dleft; 1712 1.83.2.2 lukem break; 1713 1.83.2.2 lukem 1714 1.83.2.2 lukem case MSG_RESTOREPOINTERS: 1715 1.83.2.2 lukem NCR_MSGS(("restore datapointer ")); 1716 1.83.2.2 lukem sc->sc_dp = ecb->daddr; 1717 1.83.2.2 lukem sc->sc_dleft = ecb->dleft; 1718 1.83.2.2 lukem break; 1719 1.83.2.2 lukem 1720 1.83.2.2 lukem case MSG_EXTENDED: 1721 1.83.2.2 lukem NCR_MSGS(("extended(%x) ", sc->sc_imess[2])); 1722 1.83.2.2 lukem switch (sc->sc_imess[2]) { 1723 1.83.2.2 lukem case MSG_EXT_SDTR: 1724 1.83.2.2 lukem NCR_MSGS(("SDTR period %d, offset %d ", 1725 1.83.2.2 lukem sc->sc_imess[3], sc->sc_imess[4])); 1726 1.83.2.2 lukem if (sc->sc_imess[1] != 3) 1727 1.83.2.2 lukem goto reject; 1728 1.83.2.2 lukem ti->period = sc->sc_imess[3]; 1729 1.83.2.2 lukem ti->offset = sc->sc_imess[4]; 1730 1.83.2.2 lukem ti->flags &= ~T_NEGOTIATE; 1731 1.83.2.2 lukem if (sc->sc_minsync == 0 || 1732 1.83.2.2 lukem ti->offset == 0 || 1733 1.83.2.2 lukem ti->period > 124) { 1734 1.83.2.2 lukem #if 0 1735 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1736 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1737 1.83.2.2 lukem printf("async mode\n"); 1738 1.83.2.2 lukem #endif 1739 1.83.2.2 lukem #endif 1740 1.83.2.2 lukem ti->flags &= ~T_SYNCMODE; 1741 1.83.2.2 lukem if ((sc->sc_flags&NCR_SYNCHNEGO) == 0) { 1742 1.83.2.2 lukem /* 1743 1.83.2.2 lukem * target initiated negotiation 1744 1.83.2.2 lukem */ 1745 1.83.2.2 lukem ti->offset = 0; 1746 1.83.2.2 lukem ncr53c9x_sched_msgout( 1747 1.83.2.2 lukem SEND_SDTR); 1748 1.83.2.2 lukem } 1749 1.83.2.2 lukem } else { 1750 1.83.2.2 lukem #if 0 1751 1.83.2.2 lukem int r = 250/ti->period; 1752 1.83.2.2 lukem int s = (100*250)/ti->period - 100*r; 1753 1.83.2.2 lukem #endif 1754 1.83.2.2 lukem int p; 1755 1.83.2.2 lukem 1756 1.83.2.2 lukem p = ncr53c9x_stp2cpb(sc, ti->period); 1757 1.83.2.2 lukem ti->period = ncr53c9x_cpb2stp(sc, p); 1758 1.83.2.2 lukem #if 0 1759 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1760 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1761 1.83.2.2 lukem printf("max sync rate %d.%02dMB/s\n", 1762 1.83.2.2 lukem r, s); 1763 1.83.2.2 lukem #endif 1764 1.83.2.2 lukem #endif 1765 1.83.2.2 lukem if ((sc->sc_flags&NCR_SYNCHNEGO) == 0) { 1766 1.83.2.2 lukem /* 1767 1.83.2.2 lukem * target initiated negotiation 1768 1.83.2.2 lukem */ 1769 1.83.2.2 lukem if (ti->period < 1770 1.83.2.2 lukem sc->sc_minsync) 1771 1.83.2.2 lukem ti->period = 1772 1.83.2.2 lukem sc->sc_minsync; 1773 1.83.2.2 lukem if (ti->offset > 15) 1774 1.83.2.2 lukem ti->offset = 15; 1775 1.83.2.2 lukem ti->flags &= ~T_SYNCMODE; 1776 1.83.2.2 lukem ncr53c9x_sched_msgout( 1777 1.83.2.2 lukem SEND_SDTR); 1778 1.83.2.2 lukem } else { 1779 1.83.2.2 lukem /* we are sync */ 1780 1.83.2.2 lukem ti->flags |= T_SYNCMODE; 1781 1.83.2.2 lukem } 1782 1.83.2.2 lukem } 1783 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, 1784 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1785 1.83.2.2 lukem sc->sc_flags &= ~NCR_SYNCHNEGO; 1786 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1787 1.83.2.2 lukem break; 1788 1.83.2.2 lukem 1789 1.83.2.2 lukem case MSG_EXT_WDTR: 1790 1.83.2.2 lukem printf("%s: wide mode %d\n", 1791 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_imess[3]); 1792 1.83.2.2 lukem if (sc->sc_imess[3] == 1) { 1793 1.83.2.2 lukem ti->cfg3 |= NCRFASCFG3_EWIDE; 1794 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1795 1.83.2.2 lukem } else 1796 1.83.2.2 lukem ti->width = 0; 1797 1.83.2.2 lukem ti->flags &= ~T_WIDE; 1798 1.83.2.2 lukem break; 1799 1.83.2.2 lukem default: 1800 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1801 1.83.2.2 lukem printf("unrecognized MESSAGE EXTENDED;" 1802 1.83.2.2 lukem " sending REJECT\n"); 1803 1.83.2.2 lukem goto reject; 1804 1.83.2.2 lukem } 1805 1.83.2.2 lukem break; 1806 1.83.2.2 lukem 1807 1.83.2.2 lukem default: 1808 1.83.2.2 lukem NCR_MSGS(("ident ")); 1809 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1810 1.83.2.2 lukem printf("unrecognized MESSAGE; sending REJECT\n"); 1811 1.83.2.2 lukem reject: 1812 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_REJECT); 1813 1.83.2.2 lukem break; 1814 1.83.2.2 lukem } 1815 1.83.2.2 lukem break; 1816 1.83.2.2 lukem 1817 1.83.2.2 lukem case NCR_IDENTIFIED: 1818 1.83.2.2 lukem /* 1819 1.83.2.2 lukem * IDENTIFY message was received and queue tag is expected now 1820 1.83.2.2 lukem */ 1821 1.83.2.2 lukem if ((sc->sc_imess[0] != MSG_SIMPLE_Q_TAG) || 1822 1.83.2.2 lukem (sc->sc_msgify == 0)) { 1823 1.83.2.2 lukem printf("%s: TAG reselect without IDENTIFY;" 1824 1.83.2.2 lukem " MSG %x;" 1825 1.83.2.2 lukem " sending DEVICE RESET\n", 1826 1.83.2.2 lukem sc->sc_dev.dv_xname, 1827 1.83.2.2 lukem sc->sc_imess[0]); 1828 1.83.2.2 lukem goto reset; 1829 1.83.2.2 lukem } 1830 1.83.2.2 lukem (void) ncr53c9x_reselect(sc, sc->sc_msgify, 1831 1.83.2.2 lukem sc->sc_imess[0], sc->sc_imess[1]); 1832 1.83.2.2 lukem break; 1833 1.83.2.2 lukem 1834 1.83.2.2 lukem case NCR_RESELECTED: 1835 1.83.2.2 lukem if (MSG_ISIDENTIFY(sc->sc_imess[1])) { 1836 1.83.2.2 lukem sc->sc_msgify = sc->sc_imess[1]; 1837 1.83.2.2 lukem } else { 1838 1.83.2.2 lukem printf("%s: reselect without IDENTIFY;" 1839 1.83.2.2 lukem " MSG %x;" 1840 1.83.2.2 lukem " sending DEVICE RESET\n", 1841 1.83.2.2 lukem sc->sc_dev.dv_xname, 1842 1.83.2.2 lukem sc->sc_imess[1]); 1843 1.83.2.2 lukem goto reset; 1844 1.83.2.2 lukem } 1845 1.83.2.2 lukem (void) ncr53c9x_reselect(sc, sc->sc_msgify, 0, 0); 1846 1.83.2.2 lukem break; 1847 1.83.2.2 lukem 1848 1.83.2.2 lukem default: 1849 1.83.2.2 lukem printf("%s: unexpected MESSAGE IN; sending DEVICE RESET\n", 1850 1.83.2.2 lukem sc->sc_dev.dv_xname); 1851 1.83.2.2 lukem reset: 1852 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_DEV_RESET); 1853 1.83.2.2 lukem break; 1854 1.83.2.2 lukem 1855 1.83.2.2 lukem abort: 1856 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 1857 1.83.2.2 lukem break; 1858 1.83.2.2 lukem } 1859 1.83.2.2 lukem 1860 1.83.2.2 lukem /* if we have more messages to send set ATN */ 1861 1.83.2.2 lukem if (sc->sc_msgpriq) 1862 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SETATN); 1863 1.83.2.2 lukem 1864 1.83.2.2 lukem /* Ack last message byte */ 1865 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 1866 1.83.2.2 lukem 1867 1.83.2.2 lukem /* Done, reset message pointer. */ 1868 1.83.2.2 lukem sc->sc_flags &= ~NCR_DROP_MSGI; 1869 1.83.2.2 lukem sc->sc_imlen = 0; 1870 1.83.2.2 lukem } 1871 1.83.2.2 lukem 1872 1.83.2.2 lukem 1873 1.83.2.2 lukem /* 1874 1.83.2.2 lukem * Send the highest priority, scheduled message 1875 1.83.2.2 lukem */ 1876 1.83.2.2 lukem void 1877 1.83.2.2 lukem ncr53c9x_msgout(sc) 1878 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1879 1.83.2.2 lukem { 1880 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1881 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1882 1.83.2.2 lukem size_t size; 1883 1.83.2.2 lukem 1884 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_msgout(priq:%x, prevphase:%x)]", 1885 1.83.2.2 lukem sc->sc_msgpriq, sc->sc_prevphase)); 1886 1.83.2.2 lukem 1887 1.83.2.2 lukem /* 1888 1.83.2.2 lukem * XXX - the NCR_ATN flag is not in sync with the actual ATN 1889 1.83.2.2 lukem * condition on the SCSI bus. The 53c9x chip 1890 1.83.2.2 lukem * automatically turns off ATN before sending the 1891 1.83.2.2 lukem * message byte. (see also the comment below in the 1892 1.83.2.2 lukem * default case when picking out a message to send) 1893 1.83.2.2 lukem */ 1894 1.83.2.2 lukem if (sc->sc_flags & NCR_ATN) { 1895 1.83.2.2 lukem if (sc->sc_prevphase != MESSAGE_OUT_PHASE) { 1896 1.83.2.2 lukem new: 1897 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 1898 1.83.2.2 lukem /* DELAY(1); */ 1899 1.83.2.2 lukem sc->sc_msgoutq = 0; 1900 1.83.2.2 lukem sc->sc_omlen = 0; 1901 1.83.2.2 lukem } 1902 1.83.2.2 lukem } else { 1903 1.83.2.2 lukem if (sc->sc_prevphase == MESSAGE_OUT_PHASE) { 1904 1.83.2.2 lukem ncr53c9x_sched_msgout(sc->sc_msgoutq); 1905 1.83.2.2 lukem goto new; 1906 1.83.2.2 lukem } else { 1907 1.83.2.2 lukem printf("%s at line %d: unexpected MESSAGE OUT phase\n", 1908 1.83.2.2 lukem sc->sc_dev.dv_xname, __LINE__); 1909 1.83.2.2 lukem } 1910 1.83.2.2 lukem } 1911 1.83.2.2 lukem 1912 1.83.2.2 lukem if (sc->sc_omlen == 0) { 1913 1.83.2.2 lukem /* Pick up highest priority message */ 1914 1.83.2.2 lukem sc->sc_msgout = sc->sc_msgpriq & -sc->sc_msgpriq; 1915 1.83.2.2 lukem sc->sc_msgoutq |= sc->sc_msgout; 1916 1.83.2.2 lukem sc->sc_msgpriq &= ~sc->sc_msgout; 1917 1.83.2.2 lukem sc->sc_omlen = 1; /* "Default" message len */ 1918 1.83.2.2 lukem switch (sc->sc_msgout) { 1919 1.83.2.2 lukem case SEND_SDTR: 1920 1.83.2.2 lukem ecb = sc->sc_nexus; 1921 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1922 1.83.2.2 lukem sc->sc_omess[0] = MSG_EXTENDED; 1923 1.83.2.2 lukem sc->sc_omess[1] = MSG_EXT_SDTR_LEN; 1924 1.83.2.2 lukem sc->sc_omess[2] = MSG_EXT_SDTR; 1925 1.83.2.2 lukem sc->sc_omess[3] = ti->period; 1926 1.83.2.2 lukem sc->sc_omess[4] = ti->offset; 1927 1.83.2.2 lukem sc->sc_omlen = 5; 1928 1.83.2.2 lukem if ((sc->sc_flags & NCR_SYNCHNEGO) == 0) { 1929 1.83.2.2 lukem ti->flags |= T_SYNCMODE; 1930 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1931 1.83.2.2 lukem } 1932 1.83.2.2 lukem break; 1933 1.83.2.2 lukem case SEND_WDTR: 1934 1.83.2.2 lukem ecb = sc->sc_nexus; 1935 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1936 1.83.2.2 lukem sc->sc_omess[0] = MSG_EXTENDED; 1937 1.83.2.2 lukem sc->sc_omess[1] = MSG_EXT_WDTR_LEN; 1938 1.83.2.2 lukem sc->sc_omess[2] = MSG_EXT_WDTR; 1939 1.83.2.2 lukem sc->sc_omess[3] = ti->width; 1940 1.83.2.2 lukem sc->sc_omlen = 4; 1941 1.83.2.2 lukem break; 1942 1.83.2.2 lukem case SEND_IDENTIFY: 1943 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED) { 1944 1.83.2.2 lukem printf("%s at line %d: no nexus\n", 1945 1.83.2.2 lukem sc->sc_dev.dv_xname, __LINE__); 1946 1.83.2.2 lukem } 1947 1.83.2.2 lukem ecb = sc->sc_nexus; 1948 1.83.2.2 lukem sc->sc_omess[0] = 1949 1.83.2.2 lukem MSG_IDENTIFY(ecb->xs->xs_periph->periph_lun, 0); 1950 1.83.2.2 lukem break; 1951 1.83.2.2 lukem case SEND_TAG: 1952 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED) { 1953 1.83.2.2 lukem printf("%s at line %d: no nexus\n", 1954 1.83.2.2 lukem sc->sc_dev.dv_xname, __LINE__); 1955 1.83.2.2 lukem } 1956 1.83.2.2 lukem ecb = sc->sc_nexus; 1957 1.83.2.2 lukem sc->sc_omess[0] = ecb->tag[0]; 1958 1.83.2.2 lukem sc->sc_omess[1] = ecb->tag[1]; 1959 1.83.2.2 lukem sc->sc_omlen = 2; 1960 1.83.2.2 lukem break; 1961 1.83.2.2 lukem case SEND_DEV_RESET: 1962 1.83.2.2 lukem sc->sc_flags |= NCR_ABORTING; 1963 1.83.2.2 lukem sc->sc_omess[0] = MSG_BUS_DEV_RESET; 1964 1.83.2.2 lukem ecb = sc->sc_nexus; 1965 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1966 1.83.2.2 lukem ti->flags &= ~T_SYNCMODE; 1967 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, 1968 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1969 1.83.2.2 lukem if ((ti->flags & T_SYNCHOFF) == 0) 1970 1.83.2.2 lukem /* We can re-start sync negotiation */ 1971 1.83.2.2 lukem ti->flags |= T_NEGOTIATE; 1972 1.83.2.2 lukem break; 1973 1.83.2.2 lukem case SEND_PARITY_ERROR: 1974 1.83.2.2 lukem sc->sc_omess[0] = MSG_PARITY_ERROR; 1975 1.83.2.2 lukem break; 1976 1.83.2.2 lukem case SEND_ABORT: 1977 1.83.2.2 lukem sc->sc_flags |= NCR_ABORTING; 1978 1.83.2.2 lukem sc->sc_omess[0] = MSG_ABORT; 1979 1.83.2.2 lukem break; 1980 1.83.2.2 lukem case SEND_INIT_DET_ERR: 1981 1.83.2.2 lukem sc->sc_omess[0] = MSG_INITIATOR_DET_ERR; 1982 1.83.2.2 lukem break; 1983 1.83.2.2 lukem case SEND_REJECT: 1984 1.83.2.2 lukem sc->sc_omess[0] = MSG_MESSAGE_REJECT; 1985 1.83.2.2 lukem break; 1986 1.83.2.2 lukem default: 1987 1.83.2.2 lukem /* 1988 1.83.2.2 lukem * We normally do not get here, since the chip 1989 1.83.2.2 lukem * automatically turns off ATN before the last 1990 1.83.2.2 lukem * byte of a message is sent to the target. 1991 1.83.2.2 lukem * However, if the target rejects our (multi-byte) 1992 1.83.2.2 lukem * message early by switching to MSG IN phase 1993 1.83.2.2 lukem * ATN remains on, so the target may return to 1994 1.83.2.2 lukem * MSG OUT phase. If there are no scheduled messages 1995 1.83.2.2 lukem * left we send a NO-OP. 1996 1.83.2.2 lukem * 1997 1.83.2.2 lukem * XXX - Note that this leaves no useful purpose for 1998 1.83.2.2 lukem * the NCR_ATN flag. 1999 1.83.2.2 lukem */ 2000 1.83.2.2 lukem sc->sc_flags &= ~NCR_ATN; 2001 1.83.2.2 lukem sc->sc_omess[0] = MSG_NOOP; 2002 1.83.2.2 lukem break; 2003 1.83.2.2 lukem } 2004 1.83.2.2 lukem sc->sc_omp = sc->sc_omess; 2005 1.83.2.2 lukem } 2006 1.83.2.2 lukem 2007 1.83.2.2 lukem #ifdef DEBUG 2008 1.83.2.2 lukem { 2009 1.83.2.2 lukem int i; 2010 1.83.2.2 lukem 2011 1.83.2.2 lukem NCR_MISC(("<msgout:")); 2012 1.83.2.2 lukem for (i = 0; i < sc->sc_omlen; i++) 2013 1.83.2.2 lukem NCR_MISC((" %02x", sc->sc_omess[i])); 2014 1.83.2.2 lukem NCR_MISC(("> ")); 2015 1.83.2.2 lukem } 2016 1.83.2.2 lukem #endif 2017 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 2018 1.83.2.2 lukem /* 2019 1.83.2.2 lukem * XXX fifo size 2020 1.83.2.2 lukem */ 2021 1.83.2.2 lukem ncr53c9x_flushfifo(sc); 2022 1.83.2.2 lukem ncr53c9x_wrfifo(sc, sc->sc_omp, sc->sc_omlen); 2023 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS); 2024 1.83.2.2 lukem } else { 2025 1.83.2.2 lukem /* (re)send the message */ 2026 1.83.2.2 lukem size = min(sc->sc_omlen, sc->sc_maxxfer); 2027 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_omp, &sc->sc_omlen, 0, &size); 2028 1.83.2.2 lukem /* Program the SCSI counter */ 2029 1.83.2.2 lukem NCR_SET_COUNT(sc, size); 2030 1.83.2.2 lukem 2031 1.83.2.2 lukem /* Load the count in and start the message-out transfer */ 2032 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 2033 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS|NCRCMD_DMA); 2034 1.83.2.2 lukem NCRDMA_GO(sc); 2035 1.83.2.2 lukem } 2036 1.83.2.2 lukem } 2037 1.83.2.2 lukem 2038 1.83.2.2 lukem /* 2039 1.83.2.2 lukem * This is the most critical part of the driver, and has to know 2040 1.83.2.2 lukem * how to deal with *all* error conditions and phases from the SCSI 2041 1.83.2.2 lukem * bus. If there are no errors and the DMA was active, then call the 2042 1.83.2.2 lukem * DMA pseudo-interrupt handler. If this returns 1, then that was it 2043 1.83.2.2 lukem * and we can return from here without further processing. 2044 1.83.2.2 lukem * 2045 1.83.2.2 lukem * Most of this needs verifying. 2046 1.83.2.2 lukem */ 2047 1.83.2.2 lukem int 2048 1.83.2.2 lukem ncr53c9x_intr(arg) 2049 1.83.2.2 lukem void *arg; 2050 1.83.2.2 lukem { 2051 1.83.2.2 lukem struct ncr53c9x_softc *sc = arg; 2052 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 2053 1.83.2.2 lukem struct scsipi_periph *periph; 2054 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 2055 1.83.2.2 lukem size_t size; 2056 1.83.2.2 lukem int nfifo; 2057 1.83.2.2 lukem 2058 1.83.2.2 lukem NCR_MISC(("[ncr53c9x_intr: state %d]", sc->sc_state)); 2059 1.83.2.2 lukem 2060 1.83.2.2 lukem if (!NCRDMA_ISINTR(sc)) 2061 1.83.2.2 lukem return (0); 2062 1.83.2.2 lukem 2063 1.83.2.2 lukem again: 2064 1.83.2.2 lukem /* and what do the registers say... */ 2065 1.83.2.2 lukem ncr53c9x_readregs(sc); 2066 1.83.2.2 lukem 2067 1.83.2.2 lukem sc->sc_intrcnt.ev_count++; 2068 1.83.2.2 lukem 2069 1.83.2.2 lukem /* 2070 1.83.2.2 lukem * At the moment, only a SCSI Bus Reset or Illegal 2071 1.83.2.2 lukem * Command are classed as errors. A disconnect is a 2072 1.83.2.2 lukem * valid condition, and we let the code check is the 2073 1.83.2.2 lukem * "NCR_BUSFREE_OK" flag was set before declaring it 2074 1.83.2.2 lukem * and error. 2075 1.83.2.2 lukem * 2076 1.83.2.2 lukem * Also, the status register tells us about "Gross 2077 1.83.2.2 lukem * Errors" and "Parity errors". Only the Gross Error 2078 1.83.2.2 lukem * is really bad, and the parity errors are dealt 2079 1.83.2.2 lukem * with later 2080 1.83.2.2 lukem * 2081 1.83.2.2 lukem * TODO 2082 1.83.2.2 lukem * If there are too many parity error, go to slow 2083 1.83.2.2 lukem * cable mode ? 2084 1.83.2.2 lukem */ 2085 1.83.2.2 lukem 2086 1.83.2.2 lukem /* SCSI Reset */ 2087 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_SBR) != 0) { 2088 1.83.2.2 lukem if ((NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) != 0) { 2089 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2090 1.83.2.2 lukem DELAY(1); 2091 1.83.2.2 lukem } 2092 1.83.2.2 lukem if (sc->sc_state != NCR_SBR) { 2093 1.83.2.2 lukem printf("%s: SCSI bus reset\n", sc->sc_dev.dv_xname); 2094 1.83.2.2 lukem ncr53c9x_init(sc, 0); /* Restart everything */ 2095 1.83.2.2 lukem return (1); 2096 1.83.2.2 lukem } 2097 1.83.2.2 lukem #if 0 2098 1.83.2.2 lukem /*XXX*/ printf("<expected bus reset: " 2099 1.83.2.2 lukem "[intr %x, stat %x, step %d]>\n", 2100 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep); 2101 1.83.2.2 lukem #endif 2102 1.83.2.2 lukem if (sc->sc_nexus != NULL) 2103 1.83.2.2 lukem panic("%s: nexus in reset state", 2104 1.83.2.2 lukem sc->sc_dev.dv_xname); 2105 1.83.2.2 lukem goto sched; 2106 1.83.2.2 lukem } 2107 1.83.2.2 lukem 2108 1.83.2.2 lukem ecb = sc->sc_nexus; 2109 1.83.2.2 lukem 2110 1.83.2.2 lukem #define NCRINTR_ERR (NCRINTR_SBR|NCRINTR_ILL) 2111 1.83.2.2 lukem if (sc->sc_espintr & NCRINTR_ERR || 2112 1.83.2.2 lukem sc->sc_espstat & NCRSTAT_GE) { 2113 1.83.2.2 lukem 2114 1.83.2.2 lukem if ((sc->sc_espstat & NCRSTAT_GE) != 0) { 2115 1.83.2.2 lukem /* Gross Error; no target ? */ 2116 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2117 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2118 1.83.2.2 lukem DELAY(1); 2119 1.83.2.2 lukem } 2120 1.83.2.2 lukem if (sc->sc_state == NCR_CONNECTED || 2121 1.83.2.2 lukem sc->sc_state == NCR_SELECTING) { 2122 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 2123 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 2124 1.83.2.2 lukem } 2125 1.83.2.2 lukem return (1); 2126 1.83.2.2 lukem } 2127 1.83.2.2 lukem 2128 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_ILL) != 0) { 2129 1.83.2.2 lukem if ((sc->sc_flags & NCR_EXPECT_ILLCMD) != 0) { 2130 1.83.2.2 lukem /* 2131 1.83.2.2 lukem * Eat away "Illegal command" interrupt 2132 1.83.2.2 lukem * on a ESP100 caused by a re-selection 2133 1.83.2.2 lukem * while we were trying to select 2134 1.83.2.2 lukem * another target. 2135 1.83.2.2 lukem */ 2136 1.83.2.2 lukem #ifdef DEBUG 2137 1.83.2.2 lukem printf("%s: ESP100 work-around activated\n", 2138 1.83.2.2 lukem sc->sc_dev.dv_xname); 2139 1.83.2.2 lukem #endif 2140 1.83.2.2 lukem sc->sc_flags &= ~NCR_EXPECT_ILLCMD; 2141 1.83.2.2 lukem return (1); 2142 1.83.2.2 lukem } 2143 1.83.2.2 lukem /* illegal command, out of sync ? */ 2144 1.83.2.2 lukem printf("%s: illegal command: 0x%x " 2145 1.83.2.2 lukem "(state %d, phase %x, prevphase %x)\n", 2146 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_lastcmd, 2147 1.83.2.2 lukem sc->sc_state, sc->sc_phase, sc->sc_prevphase); 2148 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2149 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2150 1.83.2.2 lukem DELAY(1); 2151 1.83.2.2 lukem } 2152 1.83.2.2 lukem ncr53c9x_init(sc, 1); /* Restart everything */ 2153 1.83.2.2 lukem return (1); 2154 1.83.2.2 lukem } 2155 1.83.2.2 lukem } 2156 1.83.2.2 lukem sc->sc_flags &= ~NCR_EXPECT_ILLCMD; 2157 1.83.2.2 lukem 2158 1.83.2.2 lukem /* 2159 1.83.2.2 lukem * Call if DMA is active. 2160 1.83.2.2 lukem * 2161 1.83.2.2 lukem * If DMA_INTR returns true, then maybe go 'round the loop 2162 1.83.2.2 lukem * again in case there is no more DMA queued, but a phase 2163 1.83.2.2 lukem * change is expected. 2164 1.83.2.2 lukem */ 2165 1.83.2.2 lukem if (NCRDMA_ISACTIVE(sc)) { 2166 1.83.2.2 lukem int r = NCRDMA_INTR(sc); 2167 1.83.2.2 lukem if (r == -1) { 2168 1.83.2.2 lukem printf("%s: DMA error; resetting\n", 2169 1.83.2.2 lukem sc->sc_dev.dv_xname); 2170 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2171 1.83.2.6 jdolecek return 1; 2172 1.83.2.2 lukem } 2173 1.83.2.2 lukem /* If DMA active here, then go back to work... */ 2174 1.83.2.2 lukem if (NCRDMA_ISACTIVE(sc)) 2175 1.83.2.2 lukem return (1); 2176 1.83.2.2 lukem 2177 1.83.2.2 lukem if ((sc->sc_espstat & NCRSTAT_TC) == 0) { 2178 1.83.2.2 lukem /* 2179 1.83.2.2 lukem * DMA not completed. If we can not find a 2180 1.83.2.2 lukem * acceptable explanation, print a diagnostic. 2181 1.83.2.2 lukem */ 2182 1.83.2.2 lukem if (sc->sc_state == NCR_SELECTING) 2183 1.83.2.2 lukem /* 2184 1.83.2.2 lukem * This can happen if we are reselected 2185 1.83.2.2 lukem * while using DMA to select a target. 2186 1.83.2.2 lukem */ 2187 1.83.2.2 lukem /*void*/; 2188 1.83.2.2 lukem else if (sc->sc_prevphase == MESSAGE_OUT_PHASE) { 2189 1.83.2.2 lukem /* 2190 1.83.2.2 lukem * Our (multi-byte) message (eg SDTR) was 2191 1.83.2.2 lukem * interrupted by the target to send 2192 1.83.2.2 lukem * a MSG REJECT. 2193 1.83.2.2 lukem * Print diagnostic if current phase 2194 1.83.2.2 lukem * is not MESSAGE IN. 2195 1.83.2.2 lukem */ 2196 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) 2197 1.83.2.2 lukem printf("%s: !TC on MSG OUT" 2198 1.83.2.2 lukem " [intr %x, stat %x, step %d]" 2199 1.83.2.2 lukem " prevphase %x, resid %lx\n", 2200 1.83.2.2 lukem sc->sc_dev.dv_xname, 2201 1.83.2.2 lukem sc->sc_espintr, 2202 1.83.2.2 lukem sc->sc_espstat, 2203 1.83.2.2 lukem sc->sc_espstep, 2204 1.83.2.2 lukem sc->sc_prevphase, 2205 1.83.2.2 lukem (u_long)sc->sc_omlen); 2206 1.83.2.2 lukem } else if (sc->sc_dleft == 0) { 2207 1.83.2.2 lukem /* 2208 1.83.2.2 lukem * The DMA operation was started for 2209 1.83.2.2 lukem * a DATA transfer. Print a diagnostic 2210 1.83.2.2 lukem * if the DMA counter and TC bit 2211 1.83.2.2 lukem * appear to be out of sync. 2212 1.83.2.2 lukem */ 2213 1.83.2.2 lukem printf("%s: !TC on DATA XFER" 2214 1.83.2.2 lukem " [intr %x, stat %x, step %d]" 2215 1.83.2.2 lukem " prevphase %x, resid %x\n", 2216 1.83.2.2 lukem sc->sc_dev.dv_xname, 2217 1.83.2.2 lukem sc->sc_espintr, 2218 1.83.2.2 lukem sc->sc_espstat, 2219 1.83.2.2 lukem sc->sc_espstep, 2220 1.83.2.2 lukem sc->sc_prevphase, 2221 1.83.2.2 lukem ecb ? ecb->dleft : -1); 2222 1.83.2.2 lukem } 2223 1.83.2.2 lukem } 2224 1.83.2.2 lukem } 2225 1.83.2.2 lukem 2226 1.83.2.2 lukem /* 2227 1.83.2.2 lukem * Check for less serious errors. 2228 1.83.2.2 lukem */ 2229 1.83.2.2 lukem if ((sc->sc_espstat & NCRSTAT_PE) != 0) { 2230 1.83.2.2 lukem printf("%s: SCSI bus parity error\n", sc->sc_dev.dv_xname); 2231 1.83.2.2 lukem if (sc->sc_prevphase == MESSAGE_IN_PHASE) 2232 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_PARITY_ERROR); 2233 1.83.2.2 lukem else 2234 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_INIT_DET_ERR); 2235 1.83.2.2 lukem } 2236 1.83.2.2 lukem 2237 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_DIS) != 0) { 2238 1.83.2.2 lukem sc->sc_msgify = 0; 2239 1.83.2.2 lukem NCR_MISC(("<DISC [intr %x, stat %x, step %d]>", 2240 1.83.2.2 lukem sc->sc_espintr,sc->sc_espstat,sc->sc_espstep)); 2241 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2242 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2243 1.83.2.2 lukem /* DELAY(1); */ 2244 1.83.2.2 lukem } 2245 1.83.2.2 lukem /* 2246 1.83.2.2 lukem * This command must (apparently) be issued within 2247 1.83.2.2 lukem * 250mS of a disconnect. So here you are... 2248 1.83.2.2 lukem */ 2249 1.83.2.2 lukem NCRCMD(sc, NCRCMD_ENSEL); 2250 1.83.2.2 lukem 2251 1.83.2.2 lukem switch (sc->sc_state) { 2252 1.83.2.2 lukem case NCR_RESELECTED: 2253 1.83.2.2 lukem goto sched; 2254 1.83.2.2 lukem 2255 1.83.2.2 lukem case NCR_SELECTING: 2256 1.83.2.2 lukem { 2257 1.83.2.2 lukem struct ncr53c9x_linfo *li; 2258 1.83.2.2 lukem 2259 1.83.2.2 lukem ecb->xs->error = XS_SELTIMEOUT; 2260 1.83.2.2 lukem 2261 1.83.2.2 lukem /* Selection timeout -- discard all LUNs if empty */ 2262 1.83.2.2 lukem periph = ecb->xs->xs_periph; 2263 1.83.2.2 lukem ti = &sc->sc_tinfo[periph->periph_target]; 2264 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2265 1.83.2.2 lukem while (li != NULL) { 2266 1.83.2.2 lukem if (li->untagged == NULL && li->used == 0) { 2267 1.83.2.2 lukem if (li->lun < NCR_NLUN) 2268 1.83.2.2 lukem ti->lun[li->lun] = NULL; 2269 1.83.2.2 lukem LIST_REMOVE(li, link); 2270 1.83.2.2 lukem free(li, M_DEVBUF); 2271 1.83.2.2 lukem /* 2272 1.83.2.2 lukem * Restart the search at the beginning 2273 1.83.2.2 lukem */ 2274 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2275 1.83.2.2 lukem continue; 2276 1.83.2.2 lukem } 2277 1.83.2.2 lukem li = LIST_NEXT(li, link); 2278 1.83.2.2 lukem } 2279 1.83.2.2 lukem goto finish; 2280 1.83.2.2 lukem } 2281 1.83.2.2 lukem case NCR_CONNECTED: 2282 1.83.2.2 lukem if ((sc->sc_flags & NCR_SYNCHNEGO) != 0) { 2283 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 2284 1.83.2.2 lukem if (ecb != NULL) 2285 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 2286 1.83.2.2 lukem printf("sync nego not completed!\n"); 2287 1.83.2.2 lukem #endif 2288 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 2289 1.83.2.2 lukem sc->sc_flags &= ~NCR_SYNCHNEGO; 2290 1.83.2.2 lukem ti->flags &= ~(T_NEGOTIATE | T_SYNCMODE); 2291 1.83.2.2 lukem } 2292 1.83.2.2 lukem 2293 1.83.2.2 lukem /* it may be OK to disconnect */ 2294 1.83.2.2 lukem if ((sc->sc_flags & NCR_ABORTING) == 0) { 2295 1.83.2.2 lukem /* 2296 1.83.2.2 lukem * Section 5.1.1 of the SCSI 2 spec 2297 1.83.2.2 lukem * suggests issuing a REQUEST SENSE 2298 1.83.2.2 lukem * following an unexpected disconnect. 2299 1.83.2.2 lukem * Some devices go into a contingent 2300 1.83.2.2 lukem * allegiance condition when 2301 1.83.2.2 lukem * disconnecting, and this is necessary 2302 1.83.2.2 lukem * to clean up their state. 2303 1.83.2.2 lukem */ 2304 1.83.2.2 lukem printf("%s: unexpected disconnect; ", 2305 1.83.2.2 lukem sc->sc_dev.dv_xname); 2306 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) != 0) { 2307 1.83.2.2 lukem printf("resetting\n"); 2308 1.83.2.2 lukem goto reset; 2309 1.83.2.2 lukem } 2310 1.83.2.2 lukem printf("sending REQUEST SENSE\n"); 2311 1.83.2.2 lukem callout_stop(&ecb->xs->xs_callout); 2312 1.83.2.2 lukem ncr53c9x_sense(sc, ecb); 2313 1.83.2.2 lukem goto out; 2314 1.83.2.2 lukem } 2315 1.83.2.2 lukem 2316 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 2317 1.83.2.2 lukem goto finish; 2318 1.83.2.2 lukem 2319 1.83.2.2 lukem case NCR_DISCONNECT: 2320 1.83.2.2 lukem sc->sc_nexus = NULL; 2321 1.83.2.2 lukem goto sched; 2322 1.83.2.2 lukem 2323 1.83.2.2 lukem case NCR_CMDCOMPLETE: 2324 1.83.2.2 lukem goto finish; 2325 1.83.2.2 lukem } 2326 1.83.2.2 lukem } 2327 1.83.2.2 lukem 2328 1.83.2.2 lukem switch (sc->sc_state) { 2329 1.83.2.2 lukem 2330 1.83.2.2 lukem case NCR_SBR: 2331 1.83.2.2 lukem printf("%s: waiting for SCSI Bus Reset to happen\n", 2332 1.83.2.2 lukem sc->sc_dev.dv_xname); 2333 1.83.2.2 lukem return (1); 2334 1.83.2.2 lukem 2335 1.83.2.2 lukem case NCR_RESELECTED: 2336 1.83.2.2 lukem /* 2337 1.83.2.2 lukem * we must be continuing a message ? 2338 1.83.2.2 lukem */ 2339 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) { 2340 1.83.2.2 lukem printf("%s: target didn't identify\n", 2341 1.83.2.2 lukem sc->sc_dev.dv_xname); 2342 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2343 1.83.2.2 lukem return (1); 2344 1.83.2.2 lukem } 2345 1.83.2.2 lukem printf("<<RESELECT CONT'd>>"); 2346 1.83.2.2 lukem #if XXXX 2347 1.83.2.2 lukem ncr53c9x_msgin(sc); 2348 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED) { 2349 1.83.2.2 lukem /* IDENTIFY fail?! */ 2350 1.83.2.2 lukem printf("%s: identify failed\n", 2351 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_state); 2352 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2353 1.83.2.2 lukem return (1); 2354 1.83.2.2 lukem } 2355 1.83.2.2 lukem #endif 2356 1.83.2.2 lukem break; 2357 1.83.2.2 lukem 2358 1.83.2.2 lukem case NCR_IDENTIFIED: 2359 1.83.2.2 lukem ecb = sc->sc_nexus; 2360 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) { 2361 1.83.2.2 lukem int i = (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF); 2362 1.83.2.2 lukem /* 2363 1.83.2.2 lukem * Things are seriously fucked up. 2364 1.83.2.2 lukem * Pull the brakes, i.e. reset 2365 1.83.2.2 lukem */ 2366 1.83.2.2 lukem printf("%s: target didn't send tag: %d bytes in fifo\n", 2367 1.83.2.2 lukem sc->sc_dev.dv_xname, i); 2368 1.83.2.2 lukem /* Drain and display fifo */ 2369 1.83.2.2 lukem while (i-- > 0) 2370 1.83.2.2 lukem printf("[%d] ", NCR_READ_REG(sc, NCR_FIFO)); 2371 1.83.2.2 lukem 2372 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2373 1.83.2.2 lukem return (1); 2374 1.83.2.2 lukem } else 2375 1.83.2.2 lukem goto msgin; 2376 1.83.2.2 lukem 2377 1.83.2.2 lukem break; 2378 1.83.2.2 lukem 2379 1.83.2.2 lukem case NCR_IDLE: 2380 1.83.2.2 lukem case NCR_SELECTING: 2381 1.83.2.2 lukem ecb = sc->sc_nexus; 2382 1.83.2.2 lukem if (sc->sc_espintr & NCRINTR_RESEL) { 2383 1.83.2.2 lukem sc->sc_msgpriq = sc->sc_msgout = sc->sc_msgoutq = 0; 2384 1.83.2.2 lukem sc->sc_flags = 0; 2385 1.83.2.2 lukem /* 2386 1.83.2.2 lukem * If we're trying to select a 2387 1.83.2.2 lukem * target ourselves, push our command 2388 1.83.2.2 lukem * back into the ready list. 2389 1.83.2.2 lukem */ 2390 1.83.2.2 lukem if (sc->sc_state == NCR_SELECTING) { 2391 1.83.2.2 lukem NCR_MISC(("backoff selector ")); 2392 1.83.2.2 lukem callout_stop(&ecb->xs->xs_callout); 2393 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb); 2394 1.83.2.2 lukem TAILQ_INSERT_HEAD(&sc->ready_list, ecb, chain); 2395 1.83.2.2 lukem ecb->flags |= ECB_READY; 2396 1.83.2.2 lukem ecb = sc->sc_nexus = NULL; 2397 1.83.2.2 lukem } 2398 1.83.2.2 lukem sc->sc_state = NCR_RESELECTED; 2399 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) { 2400 1.83.2.2 lukem /* 2401 1.83.2.2 lukem * Things are seriously fucked up. 2402 1.83.2.2 lukem * Pull the brakes, i.e. reset 2403 1.83.2.2 lukem */ 2404 1.83.2.2 lukem printf("%s: target didn't identify\n", 2405 1.83.2.2 lukem sc->sc_dev.dv_xname); 2406 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2407 1.83.2.2 lukem return (1); 2408 1.83.2.2 lukem } 2409 1.83.2.2 lukem /* 2410 1.83.2.2 lukem * The C90 only inhibits FIFO writes until 2411 1.83.2.2 lukem * reselection is complete, instead of 2412 1.83.2.2 lukem * waiting until the interrupt status register 2413 1.83.2.2 lukem * has been read. So, if the reselect happens 2414 1.83.2.2 lukem * while we were entering a command bytes (for 2415 1.83.2.2 lukem * another target) some of those bytes can 2416 1.83.2.2 lukem * appear in the FIFO here, after the 2417 1.83.2.2 lukem * interrupt is taken. 2418 1.83.2.2 lukem */ 2419 1.83.2.2 lukem nfifo = ncr53c9x_rdfifo(sc, NCR_RDFIFO_START); 2420 1.83.2.2 lukem 2421 1.83.2.2 lukem if (nfifo < 2 || 2422 1.83.2.2 lukem (nfifo > 2 && sc->sc_rev != NCR_VARIANT_ESP100)) { 2423 1.83.2.2 lukem printf("%s: RESELECT: %d bytes in FIFO! " 2424 1.83.2.2 lukem "[intr %x, stat %x, step %d, " 2425 1.83.2.2 lukem "prevphase %x]\n", 2426 1.83.2.2 lukem sc->sc_dev.dv_xname, 2427 1.83.2.2 lukem nfifo, 2428 1.83.2.2 lukem sc->sc_espintr, 2429 1.83.2.2 lukem sc->sc_espstat, 2430 1.83.2.2 lukem sc->sc_espstep, 2431 1.83.2.2 lukem sc->sc_prevphase); 2432 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2433 1.83.2.2 lukem return (1); 2434 1.83.2.2 lukem } 2435 1.83.2.2 lukem sc->sc_selid = sc->sc_imess[0]; 2436 1.83.2.2 lukem NCR_MISC(("selid=%02x ", sc->sc_selid)); 2437 1.83.2.2 lukem 2438 1.83.2.2 lukem /* Handle identify message */ 2439 1.83.2.2 lukem ncr53c9x_msgin(sc); 2440 1.83.2.2 lukem if (nfifo != 2) { 2441 1.83.2.2 lukem /* 2442 1.83.2.2 lukem * Note: this should not happen 2443 1.83.2.2 lukem * with `dmaselect' on. 2444 1.83.2.2 lukem */ 2445 1.83.2.2 lukem sc->sc_flags |= NCR_EXPECT_ILLCMD; 2446 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2447 1.83.2.2 lukem } else if (sc->sc_features & NCR_F_DMASELECT && 2448 1.83.2.2 lukem sc->sc_rev == NCR_VARIANT_ESP100) { 2449 1.83.2.2 lukem sc->sc_flags |= NCR_EXPECT_ILLCMD; 2450 1.83.2.2 lukem } 2451 1.83.2.2 lukem 2452 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED && 2453 1.83.2.2 lukem sc->sc_state != NCR_IDENTIFIED) { 2454 1.83.2.2 lukem /* IDENTIFY fail?! */ 2455 1.83.2.2 lukem printf("%s: identify failed, " 2456 1.83.2.2 lukem "state %d, intr %02x\n", 2457 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_state, 2458 1.83.2.2 lukem sc->sc_espintr); 2459 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2460 1.83.2.2 lukem return (1); 2461 1.83.2.2 lukem } 2462 1.83.2.2 lukem goto shortcut; /* ie. next phase expected soon */ 2463 1.83.2.2 lukem } 2464 1.83.2.2 lukem 2465 1.83.2.2 lukem #define NCRINTR_DONE (NCRINTR_FC|NCRINTR_BS) 2466 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_DONE) == NCRINTR_DONE) { 2467 1.83.2.2 lukem /* 2468 1.83.2.2 lukem * Arbitration won; examine the `step' register 2469 1.83.2.2 lukem * to determine how far the selection could progress. 2470 1.83.2.2 lukem */ 2471 1.83.2.2 lukem ecb = sc->sc_nexus; 2472 1.83.2.2 lukem if (ecb == NULL) 2473 1.83.2.2 lukem panic("ncr53c9x: no nexus"); 2474 1.83.2.2 lukem 2475 1.83.2.2 lukem periph = ecb->xs->xs_periph; 2476 1.83.2.2 lukem ti = &sc->sc_tinfo[periph->periph_target]; 2477 1.83.2.2 lukem 2478 1.83.2.2 lukem switch (sc->sc_espstep) { 2479 1.83.2.2 lukem case 0: 2480 1.83.2.2 lukem /* 2481 1.83.2.2 lukem * The target did not respond with a 2482 1.83.2.2 lukem * message out phase - probably an old 2483 1.83.2.2 lukem * device that doesn't recognize ATN. 2484 1.83.2.2 lukem * Clear ATN and just continue, the 2485 1.83.2.2 lukem * target should be in the command 2486 1.83.2.2 lukem * phase. 2487 1.83.2.2 lukem * XXXX check for command phase? 2488 1.83.2.2 lukem */ 2489 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTATN); 2490 1.83.2.2 lukem break; 2491 1.83.2.2 lukem case 1: 2492 1.83.2.2 lukem if ((ti->flags & T_NEGOTIATE) == 0 && 2493 1.83.2.2 lukem ecb->tag[0] == 0) { 2494 1.83.2.2 lukem printf("%s: step 1 & !NEG\n", 2495 1.83.2.2 lukem sc->sc_dev.dv_xname); 2496 1.83.2.2 lukem goto reset; 2497 1.83.2.2 lukem } 2498 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_OUT_PHASE) { 2499 1.83.2.2 lukem printf("%s: !MSGOUT\n", 2500 1.83.2.2 lukem sc->sc_dev.dv_xname); 2501 1.83.2.2 lukem goto reset; 2502 1.83.2.2 lukem } 2503 1.83.2.2 lukem if (ti->flags & T_WIDE) { 2504 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_WDTR); 2505 1.83.2.2 lukem } 2506 1.83.2.2 lukem if (ti->flags & T_NEGOTIATE) { 2507 1.83.2.2 lukem /* Start negotiating */ 2508 1.83.2.2 lukem ti->period = sc->sc_minsync; 2509 1.83.2.2 lukem ti->offset = 15; 2510 1.83.2.2 lukem sc->sc_flags |= NCR_SYNCHNEGO; 2511 1.83.2.2 lukem if (ecb->tag[0]) 2512 1.83.2.2 lukem ncr53c9x_sched_msgout( 2513 1.83.2.2 lukem SEND_TAG|SEND_SDTR); 2514 1.83.2.2 lukem else 2515 1.83.2.2 lukem ncr53c9x_sched_msgout( 2516 1.83.2.2 lukem SEND_SDTR); 2517 1.83.2.2 lukem } else { 2518 1.83.2.2 lukem /* Could not do ATN3 so send TAG */ 2519 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_TAG); 2520 1.83.2.2 lukem } 2521 1.83.2.2 lukem sc->sc_prevphase = MESSAGE_OUT_PHASE; /* XXXX */ 2522 1.83.2.2 lukem break; 2523 1.83.2.2 lukem case 3: 2524 1.83.2.2 lukem /* 2525 1.83.2.2 lukem * Grr, this is supposed to mean 2526 1.83.2.2 lukem * "target left command phase prematurely". 2527 1.83.2.2 lukem * It seems to happen regularly when 2528 1.83.2.2 lukem * sync mode is on. 2529 1.83.2.2 lukem * Look at FIFO to see if command went out. 2530 1.83.2.2 lukem * (Timing problems?) 2531 1.83.2.2 lukem */ 2532 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT) { 2533 1.83.2.2 lukem if (sc->sc_cmdlen == 0) 2534 1.83.2.2 lukem /* Hope for the best.. */ 2535 1.83.2.2 lukem break; 2536 1.83.2.2 lukem } else if ((NCR_READ_REG(sc, NCR_FFLAG) 2537 1.83.2.2 lukem & NCRFIFO_FF) == 0) { 2538 1.83.2.2 lukem /* Hope for the best.. */ 2539 1.83.2.2 lukem break; 2540 1.83.2.2 lukem } 2541 1.83.2.2 lukem printf("(%s:%d:%d): selection failed;" 2542 1.83.2.2 lukem " %d left in FIFO " 2543 1.83.2.2 lukem "[intr %x, stat %x, step %d]\n", 2544 1.83.2.2 lukem sc->sc_dev.dv_xname, 2545 1.83.2.2 lukem periph->periph_target, 2546 1.83.2.2 lukem periph->periph_lun, 2547 1.83.2.2 lukem NCR_READ_REG(sc, NCR_FFLAG) 2548 1.83.2.2 lukem & NCRFIFO_FF, 2549 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, 2550 1.83.2.2 lukem sc->sc_espstep); 2551 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2552 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 2553 1.83.2.2 lukem return (1); 2554 1.83.2.2 lukem case 2: 2555 1.83.2.2 lukem /* Select stuck at Command Phase */ 2556 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2557 1.83.2.2 lukem break; 2558 1.83.2.2 lukem case 4: 2559 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT && 2560 1.83.2.2 lukem sc->sc_cmdlen != 0) 2561 1.83.2.2 lukem printf("(%s:%d:%d): select; " 2562 1.83.2.2 lukem "%lu left in DMA buffer " 2563 1.83.2.2 lukem "[intr %x, stat %x, step %d]\n", 2564 1.83.2.2 lukem sc->sc_dev.dv_xname, 2565 1.83.2.2 lukem periph->periph_target, 2566 1.83.2.2 lukem periph->periph_lun, 2567 1.83.2.2 lukem (u_long)sc->sc_cmdlen, 2568 1.83.2.2 lukem sc->sc_espintr, 2569 1.83.2.2 lukem sc->sc_espstat, 2570 1.83.2.2 lukem sc->sc_espstep); 2571 1.83.2.2 lukem /* So far, everything went fine */ 2572 1.83.2.2 lukem break; 2573 1.83.2.2 lukem } 2574 1.83.2.2 lukem 2575 1.83.2.2 lukem sc->sc_prevphase = INVALID_PHASE; /* ?? */ 2576 1.83.2.2 lukem /* Do an implicit RESTORE POINTERS. */ 2577 1.83.2.2 lukem sc->sc_dp = ecb->daddr; 2578 1.83.2.2 lukem sc->sc_dleft = ecb->dleft; 2579 1.83.2.2 lukem sc->sc_state = NCR_CONNECTED; 2580 1.83.2.2 lukem break; 2581 1.83.2.2 lukem 2582 1.83.2.2 lukem } else { 2583 1.83.2.2 lukem 2584 1.83.2.2 lukem printf("%s: unexpected status after select" 2585 1.83.2.2 lukem ": [intr %x, stat %x, step %x]\n", 2586 1.83.2.2 lukem sc->sc_dev.dv_xname, 2587 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep); 2588 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2589 1.83.2.2 lukem DELAY(1); 2590 1.83.2.2 lukem goto reset; 2591 1.83.2.2 lukem } 2592 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) { 2593 1.83.2.2 lukem printf("%s: stray interrupt\n", sc->sc_dev.dv_xname); 2594 1.83.2.2 lukem return (0); 2595 1.83.2.2 lukem } 2596 1.83.2.2 lukem break; 2597 1.83.2.2 lukem 2598 1.83.2.2 lukem case NCR_CONNECTED: 2599 1.83.2.2 lukem if ((sc->sc_flags & NCR_ICCS) != 0) { 2600 1.83.2.2 lukem /* "Initiate Command Complete Steps" in progress */ 2601 1.83.2.2 lukem u_char msg; 2602 1.83.2.2 lukem 2603 1.83.2.2 lukem sc->sc_flags &= ~NCR_ICCS; 2604 1.83.2.2 lukem 2605 1.83.2.2 lukem if (!(sc->sc_espintr & NCRINTR_DONE)) { 2606 1.83.2.2 lukem printf("%s: ICCS: " 2607 1.83.2.2 lukem ": [intr %x, stat %x, step %x]\n", 2608 1.83.2.2 lukem sc->sc_dev.dv_xname, 2609 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, 2610 1.83.2.2 lukem sc->sc_espstep); 2611 1.83.2.2 lukem } 2612 1.83.2.2 lukem ncr53c9x_rdfifo(sc, NCR_RDFIFO_START); 2613 1.83.2.2 lukem if (sc->sc_imlen < 2) 2614 1.83.2.2 lukem printf("%s: can't get status, only %d bytes\n", 2615 1.83.2.2 lukem sc->sc_dev.dv_xname, (int)sc->sc_imlen); 2616 1.83.2.2 lukem ecb->stat = sc->sc_imess[sc->sc_imlen - 2]; 2617 1.83.2.2 lukem msg = sc->sc_imess[sc->sc_imlen - 1]; 2618 1.83.2.2 lukem NCR_PHASE(("<stat:(%x,%x)>", ecb->stat, msg)); 2619 1.83.2.2 lukem if (msg == MSG_CMDCOMPLETE) { 2620 1.83.2.2 lukem ecb->dleft = (ecb->flags & ECB_TENTATIVE_DONE) 2621 1.83.2.2 lukem ? 0 : sc->sc_dleft; 2622 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) == 0) 2623 1.83.2.2 lukem ecb->xs->resid = ecb->dleft; 2624 1.83.2.2 lukem sc->sc_state = NCR_CMDCOMPLETE; 2625 1.83.2.2 lukem } else 2626 1.83.2.2 lukem printf("%s: STATUS_PHASE: msg %d\n", 2627 1.83.2.2 lukem sc->sc_dev.dv_xname, msg); 2628 1.83.2.2 lukem sc->sc_imlen = 0; 2629 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 2630 1.83.2.2 lukem goto shortcut; /* ie. wait for disconnect */ 2631 1.83.2.2 lukem } 2632 1.83.2.2 lukem break; 2633 1.83.2.2 lukem 2634 1.83.2.2 lukem default: 2635 1.83.2.2 lukem /* Don't panic: reset. */ 2636 1.83.2.2 lukem printf("%s: invalid state: %d\n", 2637 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_state); 2638 1.83.2.2 lukem ncr53c9x_scsi_reset(sc); 2639 1.83.2.2 lukem goto out; 2640 1.83.2.2 lukem } 2641 1.83.2.2 lukem 2642 1.83.2.2 lukem /* 2643 1.83.2.2 lukem * Driver is now in state NCR_CONNECTED, i.e. we 2644 1.83.2.2 lukem * have a current command working the SCSI bus. 2645 1.83.2.2 lukem */ 2646 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED || ecb == NULL) { 2647 1.83.2.2 lukem panic("ncr53c9x: no nexus"); 2648 1.83.2.2 lukem } 2649 1.83.2.2 lukem 2650 1.83.2.2 lukem switch (sc->sc_phase) { 2651 1.83.2.2 lukem case MESSAGE_OUT_PHASE: 2652 1.83.2.2 lukem NCR_PHASE(("MESSAGE_OUT_PHASE ")); 2653 1.83.2.2 lukem ncr53c9x_msgout(sc); 2654 1.83.2.2 lukem sc->sc_prevphase = MESSAGE_OUT_PHASE; 2655 1.83.2.2 lukem break; 2656 1.83.2.2 lukem 2657 1.83.2.2 lukem case MESSAGE_IN_PHASE: 2658 1.83.2.2 lukem msgin: 2659 1.83.2.2 lukem NCR_PHASE(("MESSAGE_IN_PHASE ")); 2660 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_BS) != 0) { 2661 1.83.2.2 lukem if ((sc->sc_rev != NCR_VARIANT_FAS366) || 2662 1.83.2.2 lukem !(sc->sc_espstat2 & NCRFAS_STAT2_EMPTY)) { 2663 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2664 1.83.2.2 lukem } 2665 1.83.2.2 lukem sc->sc_flags |= NCR_WAITI; 2666 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS); 2667 1.83.2.2 lukem } else if ((sc->sc_espintr & NCRINTR_FC) != 0) { 2668 1.83.2.2 lukem if ((sc->sc_flags & NCR_WAITI) == 0) { 2669 1.83.2.2 lukem printf("%s: MSGIN: unexpected FC bit: " 2670 1.83.2.2 lukem "[intr %x, stat %x, step %x]\n", 2671 1.83.2.2 lukem sc->sc_dev.dv_xname, 2672 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, 2673 1.83.2.2 lukem sc->sc_espstep); 2674 1.83.2.2 lukem } 2675 1.83.2.2 lukem sc->sc_flags &= ~NCR_WAITI; 2676 1.83.2.2 lukem ncr53c9x_rdfifo(sc, 2677 1.83.2.2 lukem (sc->sc_prevphase == sc->sc_phase) ? 2678 1.83.2.2 lukem NCR_RDFIFO_CONTINUE : NCR_RDFIFO_START); 2679 1.83.2.2 lukem ncr53c9x_msgin(sc); 2680 1.83.2.2 lukem } else { 2681 1.83.2.2 lukem printf("%s: MSGIN: weird bits: " 2682 1.83.2.2 lukem "[intr %x, stat %x, step %x]\n", 2683 1.83.2.2 lukem sc->sc_dev.dv_xname, 2684 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep); 2685 1.83.2.2 lukem } 2686 1.83.2.2 lukem sc->sc_prevphase = MESSAGE_IN_PHASE; 2687 1.83.2.2 lukem goto shortcut; /* i.e. expect data to be ready */ 2688 1.83.2.2 lukem break; 2689 1.83.2.2 lukem 2690 1.83.2.2 lukem case COMMAND_PHASE: 2691 1.83.2.2 lukem /* 2692 1.83.2.2 lukem * Send the command block. Normally we don't see this 2693 1.83.2.2 lukem * phase because the SEL_ATN command takes care of 2694 1.83.2.2 lukem * all this. However, we end up here if either the 2695 1.83.2.2 lukem * target or we wanted to exchange some more messages 2696 1.83.2.2 lukem * first (e.g. to start negotiations). 2697 1.83.2.2 lukem */ 2698 1.83.2.2 lukem 2699 1.83.2.2 lukem NCR_PHASE(("COMMAND_PHASE 0x%02x (%d) ", 2700 1.83.2.2 lukem ecb->cmd.cmd.opcode, ecb->clen)); 2701 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2702 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2703 1.83.2.2 lukem /* DELAY(1);*/ 2704 1.83.2.2 lukem } 2705 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT) { 2706 1.83.2.2 lukem size_t size; 2707 1.83.2.2 lukem /* setup DMA transfer for command */ 2708 1.83.2.2 lukem size = ecb->clen; 2709 1.83.2.2 lukem sc->sc_cmdlen = size; 2710 1.83.2.2 lukem sc->sc_cmdp = (caddr_t)&ecb->cmd.cmd; 2711 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_cmdp, &sc->sc_cmdlen, 2712 1.83.2.2 lukem 0, &size); 2713 1.83.2.2 lukem /* Program the SCSI counter */ 2714 1.83.2.2 lukem NCR_SET_COUNT(sc, size); 2715 1.83.2.2 lukem 2716 1.83.2.2 lukem /* load the count in */ 2717 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 2718 1.83.2.2 lukem 2719 1.83.2.2 lukem /* start the command transfer */ 2720 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS | NCRCMD_DMA); 2721 1.83.2.2 lukem NCRDMA_GO(sc); 2722 1.83.2.2 lukem } else { 2723 1.83.2.2 lukem ncr53c9x_wrfifo(sc, (u_char *)&ecb->cmd.cmd, ecb->clen); 2724 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS); 2725 1.83.2.2 lukem } 2726 1.83.2.2 lukem sc->sc_prevphase = COMMAND_PHASE; 2727 1.83.2.2 lukem break; 2728 1.83.2.2 lukem 2729 1.83.2.2 lukem case DATA_OUT_PHASE: 2730 1.83.2.2 lukem NCR_PHASE(("DATA_OUT_PHASE [%ld] ",(long)sc->sc_dleft)); 2731 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2732 1.83.2.2 lukem size = min(sc->sc_dleft, sc->sc_maxxfer); 2733 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_dp, &sc->sc_dleft, 0, &size); 2734 1.83.2.2 lukem sc->sc_prevphase = DATA_OUT_PHASE; 2735 1.83.2.2 lukem goto setup_xfer; 2736 1.83.2.2 lukem 2737 1.83.2.2 lukem case DATA_IN_PHASE: 2738 1.83.2.2 lukem NCR_PHASE(("DATA_IN_PHASE ")); 2739 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_ESP100) 2740 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2741 1.83.2.2 lukem size = min(sc->sc_dleft, sc->sc_maxxfer); 2742 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_dp, &sc->sc_dleft, 1, &size); 2743 1.83.2.2 lukem sc->sc_prevphase = DATA_IN_PHASE; 2744 1.83.2.2 lukem setup_xfer: 2745 1.83.2.2 lukem /* Target returned to data phase: wipe "done" memory */ 2746 1.83.2.2 lukem ecb->flags &= ~ECB_TENTATIVE_DONE; 2747 1.83.2.2 lukem 2748 1.83.2.2 lukem /* Program the SCSI counter */ 2749 1.83.2.2 lukem NCR_SET_COUNT(sc, size); 2750 1.83.2.2 lukem 2751 1.83.2.2 lukem /* load the count in */ 2752 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 2753 1.83.2.2 lukem 2754 1.83.2.2 lukem /* 2755 1.83.2.2 lukem * Note that if `size' is 0, we've already transceived 2756 1.83.2.2 lukem * all the bytes we want but we're still in DATA PHASE. 2757 1.83.2.2 lukem * Apparently, the device needs padding. Also, a 2758 1.83.2.2 lukem * transfer size of 0 means "maximum" to the chip 2759 1.83.2.2 lukem * DMA logic. 2760 1.83.2.2 lukem */ 2761 1.83.2.2 lukem NCRCMD(sc, 2762 1.83.2.2 lukem (size == 0 ? NCRCMD_TRPAD : NCRCMD_TRANS) | NCRCMD_DMA); 2763 1.83.2.2 lukem NCRDMA_GO(sc); 2764 1.83.2.2 lukem return (1); 2765 1.83.2.2 lukem 2766 1.83.2.2 lukem case STATUS_PHASE: 2767 1.83.2.2 lukem NCR_PHASE(("STATUS_PHASE ")); 2768 1.83.2.2 lukem sc->sc_flags |= NCR_ICCS; 2769 1.83.2.2 lukem NCRCMD(sc, NCRCMD_ICCS); 2770 1.83.2.2 lukem sc->sc_prevphase = STATUS_PHASE; 2771 1.83.2.2 lukem goto shortcut; /* i.e. expect status results soon */ 2772 1.83.2.2 lukem break; 2773 1.83.2.2 lukem 2774 1.83.2.2 lukem case INVALID_PHASE: 2775 1.83.2.2 lukem break; 2776 1.83.2.2 lukem 2777 1.83.2.2 lukem default: 2778 1.83.2.2 lukem printf("%s: unexpected bus phase; resetting\n", 2779 1.83.2.2 lukem sc->sc_dev.dv_xname); 2780 1.83.2.2 lukem goto reset; 2781 1.83.2.2 lukem } 2782 1.83.2.2 lukem 2783 1.83.2.2 lukem out: 2784 1.83.2.2 lukem return (1); 2785 1.83.2.2 lukem 2786 1.83.2.2 lukem reset: 2787 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2788 1.83.2.2 lukem goto out; 2789 1.83.2.2 lukem 2790 1.83.2.2 lukem finish: 2791 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 2792 1.83.2.2 lukem goto out; 2793 1.83.2.2 lukem 2794 1.83.2.2 lukem sched: 2795 1.83.2.2 lukem sc->sc_state = NCR_IDLE; 2796 1.83.2.2 lukem ncr53c9x_sched(sc); 2797 1.83.2.2 lukem goto out; 2798 1.83.2.2 lukem 2799 1.83.2.2 lukem shortcut: 2800 1.83.2.2 lukem /* 2801 1.83.2.2 lukem * The idea is that many of the SCSI operations take very little 2802 1.83.2.2 lukem * time, and going away and getting interrupted is too high an 2803 1.83.2.2 lukem * overhead to pay. For example, selecting, sending a message 2804 1.83.2.2 lukem * and command and then doing some work can be done in one "pass". 2805 1.83.2.2 lukem * 2806 1.83.2.2 lukem * The delay is a heuristic. It is 2 when at 20MHz, 2 at 25MHz and 1 2807 1.83.2.2 lukem * at 40MHz. This needs testing. 2808 1.83.2.2 lukem */ 2809 1.83.2.2 lukem { 2810 1.83.2.2 lukem struct timeval wait, cur; 2811 1.83.2.2 lukem 2812 1.83.2.2 lukem microtime(&wait); 2813 1.83.2.2 lukem wait.tv_usec += 50 / sc->sc_freq; 2814 1.83.2.2 lukem if (wait.tv_usec > 1000000) { 2815 1.83.2.2 lukem wait.tv_sec++; 2816 1.83.2.2 lukem wait.tv_usec -= 1000000; 2817 1.83.2.2 lukem } 2818 1.83.2.2 lukem do { 2819 1.83.2.2 lukem if (NCRDMA_ISINTR(sc)) 2820 1.83.2.2 lukem goto again; 2821 1.83.2.2 lukem microtime(&cur); 2822 1.83.2.2 lukem } while (cur.tv_sec <= wait.tv_sec && 2823 1.83.2.2 lukem cur.tv_usec <= wait.tv_usec); 2824 1.83.2.2 lukem } 2825 1.83.2.2 lukem goto out; 2826 1.83.2.2 lukem } 2827 1.83.2.2 lukem 2828 1.83.2.2 lukem void 2829 1.83.2.2 lukem ncr53c9x_abort(sc, ecb) 2830 1.83.2.2 lukem struct ncr53c9x_softc *sc; 2831 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 2832 1.83.2.2 lukem { 2833 1.83.2.2 lukem 2834 1.83.2.2 lukem /* 2 secs for the abort */ 2835 1.83.2.2 lukem ecb->timeout = NCR_ABORT_TIMEOUT; 2836 1.83.2.2 lukem ecb->flags |= ECB_ABORT; 2837 1.83.2.2 lukem 2838 1.83.2.2 lukem if (ecb == sc->sc_nexus) { 2839 1.83.2.2 lukem /* 2840 1.83.2.2 lukem * If we're still selecting, the message will be scheduled 2841 1.83.2.2 lukem * after selection is complete. 2842 1.83.2.2 lukem */ 2843 1.83.2.2 lukem if (sc->sc_state == NCR_CONNECTED) 2844 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 2845 1.83.2.2 lukem 2846 1.83.2.2 lukem /* 2847 1.83.2.2 lukem * Reschedule timeout. 2848 1.83.2.2 lukem */ 2849 1.83.2.6 jdolecek callout_reset(&ecb->xs->xs_callout, mstohz(ecb->timeout), 2850 1.83.2.2 lukem ncr53c9x_timeout, ecb); 2851 1.83.2.2 lukem } else { 2852 1.83.2.2 lukem /* 2853 1.83.2.2 lukem * Just leave the command where it is. 2854 1.83.2.2 lukem * XXX - what choice do we have but to reset the SCSI 2855 1.83.2.2 lukem * eventually? 2856 1.83.2.2 lukem */ 2857 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) 2858 1.83.2.2 lukem ncr53c9x_sched(sc); 2859 1.83.2.2 lukem } 2860 1.83.2.2 lukem } 2861 1.83.2.2 lukem 2862 1.83.2.2 lukem void 2863 1.83.2.2 lukem ncr53c9x_timeout(arg) 2864 1.83.2.2 lukem void *arg; 2865 1.83.2.2 lukem { 2866 1.83.2.2 lukem struct ncr53c9x_ecb *ecb = arg; 2867 1.83.2.2 lukem struct scsipi_xfer *xs = ecb->xs; 2868 1.83.2.2 lukem struct scsipi_periph *periph = xs->xs_periph; 2869 1.83.2.2 lukem struct ncr53c9x_softc *sc = 2870 1.83.2.2 lukem (void *)periph->periph_channel->chan_adapter->adapt_dev; 2871 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[periph->periph_target]; 2872 1.83.2.2 lukem int s; 2873 1.83.2.2 lukem 2874 1.83.2.2 lukem scsipi_printaddr(periph); 2875 1.83.2.2 lukem printf("%s: timed out [ecb %p (flags 0x%x, dleft %x, stat %x)], " 2876 1.83.2.2 lukem "<state %d, nexus %p, phase(l %x, c %x, p %x), resid %lx, " 2877 1.83.2.2 lukem "msg(q %x,o %x) %s>", 2878 1.83.2.2 lukem sc->sc_dev.dv_xname, 2879 1.83.2.2 lukem ecb, ecb->flags, ecb->dleft, ecb->stat, 2880 1.83.2.2 lukem sc->sc_state, sc->sc_nexus, 2881 1.83.2.2 lukem NCR_READ_REG(sc, NCR_STAT), 2882 1.83.2.2 lukem sc->sc_phase, sc->sc_prevphase, 2883 1.83.2.2 lukem (long)sc->sc_dleft, sc->sc_msgpriq, sc->sc_msgout, 2884 1.83.2.2 lukem NCRDMA_ISACTIVE(sc) ? "DMA active" : ""); 2885 1.83.2.2 lukem #if NCR53C9X_DEBUG > 1 2886 1.83.2.2 lukem printf("TRACE: %s.", ecb->trace); 2887 1.83.2.2 lukem #endif 2888 1.83.2.2 lukem 2889 1.83.2.2 lukem s = splbio(); 2890 1.83.2.2 lukem 2891 1.83.2.2 lukem if (ecb->flags & ECB_ABORT) { 2892 1.83.2.2 lukem /* abort timed out */ 2893 1.83.2.2 lukem printf(" AGAIN\n"); 2894 1.83.2.2 lukem 2895 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2896 1.83.2.2 lukem } else { 2897 1.83.2.2 lukem /* abort the operation that has timed out */ 2898 1.83.2.2 lukem printf("\n"); 2899 1.83.2.2 lukem xs->error = XS_TIMEOUT; 2900 1.83.2.2 lukem ncr53c9x_abort(sc, ecb); 2901 1.83.2.2 lukem 2902 1.83.2.2 lukem /* Disable sync mode if stuck in a data phase */ 2903 1.83.2.2 lukem if (ecb == sc->sc_nexus && 2904 1.83.2.2 lukem (ti->flags & T_SYNCMODE) != 0 && 2905 1.83.2.2 lukem (sc->sc_phase & (MSGI|CDI)) == 0) { 2906 1.83.2.2 lukem /* XXX ASYNC CALLBACK! */ 2907 1.83.2.2 lukem scsipi_printaddr(periph); 2908 1.83.2.2 lukem printf("sync negotiation disabled\n"); 2909 1.83.2.2 lukem sc->sc_cfflags |= (1 << (periph->periph_target + 8)); 2910 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, periph->periph_target); 2911 1.83.2.2 lukem } 2912 1.83.2.2 lukem } 2913 1.83.2.2 lukem 2914 1.83.2.2 lukem splx(s); 2915 1.83.2.2 lukem } 2916 1.83.2.2 lukem 2917 1.83.2.2 lukem void 2918 1.83.2.2 lukem ncr53c9x_watch(arg) 2919 1.83.2.2 lukem void *arg; 2920 1.83.2.2 lukem { 2921 1.83.2.2 lukem struct ncr53c9x_softc *sc = (struct ncr53c9x_softc *)arg; 2922 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 2923 1.83.2.2 lukem struct ncr53c9x_linfo *li; 2924 1.83.2.2 lukem int t, s; 2925 1.83.2.2 lukem /* Delete any structures that have not been used in 10min. */ 2926 1.83.2.2 lukem time_t old = time.tv_sec - (10 * 60); 2927 1.83.2.2 lukem 2928 1.83.2.2 lukem s = splbio(); 2929 1.83.2.2 lukem for (t = 0; t < NCR_NTARG; t++) { 2930 1.83.2.2 lukem ti = &sc->sc_tinfo[t]; 2931 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2932 1.83.2.2 lukem while (li) { 2933 1.83.2.2 lukem if (li->last_used < old && 2934 1.83.2.2 lukem li->untagged == NULL && 2935 1.83.2.2 lukem li->used == 0) { 2936 1.83.2.2 lukem if (li->lun < NCR_NLUN) 2937 1.83.2.2 lukem ti->lun[li->lun] = NULL; 2938 1.83.2.2 lukem LIST_REMOVE(li, link); 2939 1.83.2.2 lukem free(li, M_DEVBUF); 2940 1.83.2.2 lukem /* Restart the search at the beginning */ 2941 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2942 1.83.2.2 lukem continue; 2943 1.83.2.2 lukem } 2944 1.83.2.2 lukem li = LIST_NEXT(li, link); 2945 1.83.2.2 lukem } 2946 1.83.2.2 lukem } 2947 1.83.2.2 lukem splx(s); 2948 1.83.2.2 lukem callout_reset(&sc->sc_watchdog, 60 * hz, ncr53c9x_watch, sc); 2949 1.83.2.2 lukem } 2950 1.83.2.2 lukem 2951
Indexes created Sat Nov 01 05:10:12 GMT 2025