ncr53c9x.c revision 1.83.2.2
1 1.83.2.2 lukem /* $NetBSD: ncr53c9x.c,v 1.83.2.2 2001/08/03 04:13:02 lukem 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 1.83.2.2 lukem #include <sys/types.h> 80 1.83.2.2 lukem #include <sys/param.h> 81 1.83.2.2 lukem #include <sys/systm.h> 82 1.83.2.2 lukem #include <sys/callout.h> 83 1.83.2.2 lukem #include <sys/kernel.h> 84 1.83.2.2 lukem #include <sys/errno.h> 85 1.83.2.2 lukem #include <sys/ioctl.h> 86 1.83.2.2 lukem #include <sys/device.h> 87 1.83.2.2 lukem #include <sys/buf.h> 88 1.83.2.2 lukem #include <sys/malloc.h> 89 1.83.2.2 lukem #include <sys/proc.h> 90 1.83.2.2 lukem #include <sys/queue.h> 91 1.83.2.2 lukem #include <sys/pool.h> 92 1.83.2.2 lukem #include <sys/scsiio.h> 93 1.83.2.2 lukem 94 1.83.2.2 lukem #include <dev/scsipi/scsi_all.h> 95 1.83.2.2 lukem #include <dev/scsipi/scsipi_all.h> 96 1.83.2.2 lukem #include <dev/scsipi/scsiconf.h> 97 1.83.2.2 lukem #include <dev/scsipi/scsi_message.h> 98 1.83.2.2 lukem 99 1.83.2.2 lukem #include <dev/ic/ncr53c9xreg.h> 100 1.83.2.2 lukem #include <dev/ic/ncr53c9xvar.h> 101 1.83.2.2 lukem 102 1.83.2.2 lukem int ncr53c9x_debug = 0; /*NCR_SHOWPHASE|NCR_SHOWMISC|NCR_SHOWTRAC|NCR_SHOWCMDS;*/ 103 1.83.2.2 lukem #ifdef DEBUG 104 1.83.2.2 lukem int ncr53c9x_notag = 0; 105 1.83.2.2 lukem #endif 106 1.83.2.2 lukem 107 1.83.2.2 lukem /*static*/ void ncr53c9x_readregs(struct ncr53c9x_softc *); 108 1.83.2.2 lukem /*static*/ void ncr53c9x_select(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 109 1.83.2.2 lukem /*static*/ int ncr53c9x_reselect(struct ncr53c9x_softc *, int, int, int); 110 1.83.2.2 lukem /*static*/ void ncr53c9x_scsi_reset(struct ncr53c9x_softc *); 111 1.83.2.2 lukem /*static*/ int ncr53c9x_poll(struct ncr53c9x_softc *, 112 1.83.2.2 lukem struct scsipi_xfer *, int); 113 1.83.2.2 lukem /*static*/ void ncr53c9x_sched(struct ncr53c9x_softc *); 114 1.83.2.2 lukem /*static*/ void ncr53c9x_done(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 115 1.83.2.2 lukem /*static*/ void ncr53c9x_msgin(struct ncr53c9x_softc *); 116 1.83.2.2 lukem /*static*/ void ncr53c9x_msgout(struct ncr53c9x_softc *); 117 1.83.2.2 lukem /*static*/ void ncr53c9x_timeout(void *arg); 118 1.83.2.2 lukem /*static*/ void ncr53c9x_watch(void *arg); 119 1.83.2.2 lukem /*static*/ void ncr53c9x_abort(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 120 1.83.2.2 lukem /*static*/ void ncr53c9x_dequeue(struct ncr53c9x_softc *, 121 1.83.2.2 lukem struct ncr53c9x_ecb *); 122 1.83.2.2 lukem /*static*/ int ncr53c9x_ioctl(struct scsipi_channel *, u_long, 123 1.83.2.2 lukem caddr_t, int, struct proc *); 124 1.83.2.2 lukem 125 1.83.2.2 lukem void ncr53c9x_sense(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 126 1.83.2.2 lukem void ncr53c9x_free_ecb(struct ncr53c9x_softc *, struct ncr53c9x_ecb *); 127 1.83.2.2 lukem struct ncr53c9x_ecb *ncr53c9x_get_ecb(struct ncr53c9x_softc *, int); 128 1.83.2.2 lukem 129 1.83.2.2 lukem static inline int ncr53c9x_stp2cpb(struct ncr53c9x_softc *, int); 130 1.83.2.2 lukem static inline void ncr53c9x_setsync(struct ncr53c9x_softc *, 131 1.83.2.2 lukem struct ncr53c9x_tinfo *); 132 1.83.2.2 lukem void ncr53c9x_update_xfer_mode (struct ncr53c9x_softc *, int); 133 1.83.2.2 lukem static struct ncr53c9x_linfo *ncr53c9x_lunsearch(struct ncr53c9x_tinfo *, 134 1.83.2.2 lukem int64_t lun); 135 1.83.2.2 lukem 136 1.83.2.2 lukem static void ncr53c9x_wrfifo(struct ncr53c9x_softc *, u_char *, int); 137 1.83.2.2 lukem 138 1.83.2.2 lukem static int ncr53c9x_rdfifo(struct ncr53c9x_softc *, int); 139 1.83.2.2 lukem #define NCR_RDFIFO_START 0 140 1.83.2.2 lukem #define NCR_RDFIFO_CONTINUE 1 141 1.83.2.2 lukem 142 1.83.2.2 lukem 143 1.83.2.2 lukem #define NCR_SET_COUNT(sc, size) do { \ 144 1.83.2.2 lukem NCR_WRITE_REG((sc), NCR_TCL, (size)); \ 145 1.83.2.2 lukem NCR_WRITE_REG((sc), NCR_TCM, (size) >> 8); \ 146 1.83.2.2 lukem if ((sc->sc_cfg2 & NCRCFG2_FE) || \ 147 1.83.2.2 lukem (sc->sc_rev == NCR_VARIANT_FAS366)) { \ 148 1.83.2.2 lukem NCR_WRITE_REG((sc), NCR_TCH, (size) >> 16); \ 149 1.83.2.2 lukem } \ 150 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { \ 151 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_RCH, 0); \ 152 1.83.2.2 lukem } \ 153 1.83.2.2 lukem } while (0) 154 1.83.2.2 lukem 155 1.83.2.2 lukem static int ecb_pool_initialized = 0; 156 1.83.2.2 lukem static struct pool ecb_pool; 157 1.83.2.2 lukem 158 1.83.2.2 lukem /* 159 1.83.2.2 lukem * Names for the NCR53c9x variants, correspnding to the variant tags 160 1.83.2.2 lukem * in ncr53c9xvar.h. 161 1.83.2.2 lukem */ 162 1.83.2.2 lukem static const char *ncr53c9x_variant_names[] = { 163 1.83.2.2 lukem "ESP100", 164 1.83.2.2 lukem "ESP100A", 165 1.83.2.2 lukem "ESP200", 166 1.83.2.2 lukem "NCR53C94", 167 1.83.2.2 lukem "NCR53C96", 168 1.83.2.2 lukem "ESP406", 169 1.83.2.2 lukem "FAS408", 170 1.83.2.2 lukem "FAS216", 171 1.83.2.2 lukem "AM53C974", 172 1.83.2.2 lukem "FAS366/HME", 173 1.83.2.2 lukem }; 174 1.83.2.2 lukem 175 1.83.2.2 lukem /* 176 1.83.2.2 lukem * Search linked list for LUN info by LUN id. 177 1.83.2.2 lukem */ 178 1.83.2.2 lukem static struct ncr53c9x_linfo * 179 1.83.2.2 lukem ncr53c9x_lunsearch(ti, lun) 180 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 181 1.83.2.2 lukem int64_t lun; 182 1.83.2.2 lukem { 183 1.83.2.2 lukem struct ncr53c9x_linfo *li; 184 1.83.2.2 lukem LIST_FOREACH(li, &ti->luns, link) 185 1.83.2.2 lukem if (li->lun == lun) 186 1.83.2.2 lukem return (li); 187 1.83.2.2 lukem return (NULL); 188 1.83.2.2 lukem } 189 1.83.2.2 lukem 190 1.83.2.2 lukem /* 191 1.83.2.2 lukem * Attach this instance, and then all the sub-devices 192 1.83.2.2 lukem */ 193 1.83.2.2 lukem void 194 1.83.2.2 lukem ncr53c9x_attach(sc) 195 1.83.2.2 lukem struct ncr53c9x_softc *sc; 196 1.83.2.2 lukem { 197 1.83.2.2 lukem struct scsipi_adapter *adapt = &sc->sc_adapter; 198 1.83.2.2 lukem struct scsipi_channel *chan = &sc->sc_channel; 199 1.83.2.2 lukem 200 1.83.2.2 lukem callout_init(&sc->sc_watchdog); 201 1.83.2.2 lukem /* 202 1.83.2.2 lukem * Allocate SCSI message buffers. 203 1.83.2.2 lukem * Front-ends can override allocation to avoid alignment 204 1.83.2.2 lukem * handling in the DMA engines. Note that that ncr53c9x_msgout() 205 1.83.2.2 lukem * can request a 1 byte DMA transfer. 206 1.83.2.2 lukem */ 207 1.83.2.2 lukem if (sc->sc_omess == NULL) 208 1.83.2.2 lukem sc->sc_omess = malloc(NCR_MAX_MSG_LEN, M_DEVBUF, M_NOWAIT); 209 1.83.2.2 lukem 210 1.83.2.2 lukem if (sc->sc_imess == NULL) 211 1.83.2.2 lukem sc->sc_imess = malloc(NCR_MAX_MSG_LEN + 1, M_DEVBUF, M_NOWAIT); 212 1.83.2.2 lukem 213 1.83.2.2 lukem if (sc->sc_omess == NULL || sc->sc_imess == NULL) { 214 1.83.2.2 lukem printf("out of memory\n"); 215 1.83.2.2 lukem return; 216 1.83.2.2 lukem } 217 1.83.2.2 lukem 218 1.83.2.2 lukem /* 219 1.83.2.2 lukem * Note, the front-end has set us up to print the chip variation. 220 1.83.2.2 lukem */ 221 1.83.2.2 lukem if (sc->sc_rev >= NCR_VARIANT_MAX) { 222 1.83.2.2 lukem printf("\n%s: unknown variant %d, devices not attached\n", 223 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_rev); 224 1.83.2.2 lukem return; 225 1.83.2.2 lukem } 226 1.83.2.2 lukem 227 1.83.2.2 lukem printf(": %s, %dMHz, SCSI ID %d\n", 228 1.83.2.2 lukem ncr53c9x_variant_names[sc->sc_rev], sc->sc_freq, sc->sc_id); 229 1.83.2.2 lukem 230 1.83.2.2 lukem sc->sc_ccf = FREQTOCCF(sc->sc_freq); 231 1.83.2.2 lukem 232 1.83.2.2 lukem /* The value *must not* be == 1. Make it 2 */ 233 1.83.2.2 lukem if (sc->sc_ccf == 1) 234 1.83.2.2 lukem sc->sc_ccf = 2; 235 1.83.2.2 lukem 236 1.83.2.2 lukem /* 237 1.83.2.2 lukem * The recommended timeout is 250ms. This register is loaded 238 1.83.2.2 lukem * with a value calculated as follows, from the docs: 239 1.83.2.2 lukem * 240 1.83.2.2 lukem * (timout period) x (CLK frequency) 241 1.83.2.2 lukem * reg = ------------------------------------- 242 1.83.2.2 lukem * 8192 x (Clock Conversion Factor) 243 1.83.2.2 lukem * 244 1.83.2.2 lukem * Since CCF has a linear relation to CLK, this generally computes 245 1.83.2.2 lukem * to the constant of 153. 246 1.83.2.2 lukem */ 247 1.83.2.2 lukem sc->sc_timeout = ((250 * 1000) * sc->sc_freq) / (8192 * sc->sc_ccf); 248 1.83.2.2 lukem 249 1.83.2.2 lukem /* CCF register only has 3 bits; 0 is actually 8 */ 250 1.83.2.2 lukem sc->sc_ccf &= 7; 251 1.83.2.2 lukem 252 1.83.2.2 lukem /* 253 1.83.2.2 lukem * Fill in the scsipi_adapter. 254 1.83.2.2 lukem */ 255 1.83.2.2 lukem adapt->adapt_dev = &sc->sc_dev; 256 1.83.2.2 lukem adapt->adapt_nchannels = 1; 257 1.83.2.2 lukem adapt->adapt_openings = 256; 258 1.83.2.2 lukem adapt->adapt_max_periph = 256; 259 1.83.2.2 lukem adapt->adapt_ioctl = ncr53c9x_ioctl; 260 1.83.2.2 lukem /* adapt_request initialized by front-end */ 261 1.83.2.2 lukem /* adapt_minphys initialized by front-end */ 262 1.83.2.2 lukem 263 1.83.2.2 lukem /* 264 1.83.2.2 lukem * Fill in the scsipi_channel. 265 1.83.2.2 lukem */ 266 1.83.2.2 lukem memset(chan, 0, sizeof(*chan)); 267 1.83.2.2 lukem chan->chan_adapter = adapt; 268 1.83.2.2 lukem chan->chan_bustype = &scsi_bustype; 269 1.83.2.2 lukem chan->chan_channel = 0; 270 1.83.2.2 lukem chan->chan_ntargets = 8; /* XXX fas has 16(not supported) */ 271 1.83.2.2 lukem chan->chan_nluns = 8; 272 1.83.2.2 lukem chan->chan_id = sc->sc_id; 273 1.83.2.2 lukem 274 1.83.2.2 lukem /* 275 1.83.2.2 lukem * Add reference to adapter so that we drop the reference after 276 1.83.2.2 lukem * config_found() to make sure the adatper is disabled. 277 1.83.2.2 lukem */ 278 1.83.2.2 lukem if (scsipi_adapter_addref(adapt) != 0) { 279 1.83.2.2 lukem printf("%s: unable to enable controller\n", 280 1.83.2.2 lukem sc->sc_dev.dv_xname); 281 1.83.2.2 lukem return; 282 1.83.2.2 lukem } 283 1.83.2.2 lukem 284 1.83.2.2 lukem /* Reset state & bus */ 285 1.83.2.2 lukem sc->sc_cfflags = sc->sc_dev.dv_cfdata->cf_flags; 286 1.83.2.2 lukem sc->sc_state = 0; 287 1.83.2.2 lukem ncr53c9x_init(sc, 1); 288 1.83.2.2 lukem 289 1.83.2.2 lukem /* 290 1.83.2.2 lukem * Now try to attach all the sub-devices 291 1.83.2.2 lukem */ 292 1.83.2.2 lukem sc->sc_child = config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 293 1.83.2.2 lukem 294 1.83.2.2 lukem scsipi_adapter_delref(adapt); 295 1.83.2.2 lukem callout_reset(&sc->sc_watchdog, 60*hz, ncr53c9x_watch, sc); 296 1.83.2.2 lukem } 297 1.83.2.2 lukem 298 1.83.2.2 lukem int 299 1.83.2.2 lukem ncr53c9x_detach(sc, flags) 300 1.83.2.2 lukem struct ncr53c9x_softc *sc; 301 1.83.2.2 lukem int flags; 302 1.83.2.2 lukem { 303 1.83.2.2 lukem int error; 304 1.83.2.2 lukem 305 1.83.2.2 lukem if (sc->sc_child) { 306 1.83.2.2 lukem error = config_detach(sc->sc_child, flags); 307 1.83.2.2 lukem if (error) 308 1.83.2.2 lukem return (error); 309 1.83.2.2 lukem } 310 1.83.2.2 lukem 311 1.83.2.2 lukem free(sc->sc_imess, M_DEVBUF); 312 1.83.2.2 lukem free(sc->sc_omess, M_DEVBUF); 313 1.83.2.2 lukem 314 1.83.2.2 lukem return (0); 315 1.83.2.2 lukem } 316 1.83.2.2 lukem 317 1.83.2.2 lukem /* 318 1.83.2.2 lukem * This is the generic ncr53c9x reset function. It does not reset the SCSI bus, 319 1.83.2.2 lukem * only this controller, but kills any on-going commands, and also stops 320 1.83.2.2 lukem * and resets the DMA. 321 1.83.2.2 lukem * 322 1.83.2.2 lukem * After reset, registers are loaded with the defaults from the attach 323 1.83.2.2 lukem * routine above. 324 1.83.2.2 lukem */ 325 1.83.2.2 lukem void 326 1.83.2.2 lukem ncr53c9x_reset(sc) 327 1.83.2.2 lukem struct ncr53c9x_softc *sc; 328 1.83.2.2 lukem { 329 1.83.2.2 lukem 330 1.83.2.2 lukem /* reset DMA first */ 331 1.83.2.2 lukem NCRDMA_RESET(sc); 332 1.83.2.2 lukem 333 1.83.2.2 lukem /* reset SCSI chip */ 334 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTCHIP); 335 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP); 336 1.83.2.2 lukem DELAY(500); 337 1.83.2.2 lukem 338 1.83.2.2 lukem /* do these backwards, and fall through */ 339 1.83.2.2 lukem switch (sc->sc_rev) { 340 1.83.2.2 lukem case NCR_VARIANT_ESP406: 341 1.83.2.2 lukem case NCR_VARIANT_FAS408: 342 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG5, sc->sc_cfg5 | NCRCFG5_SINT); 343 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG4, sc->sc_cfg4); 344 1.83.2.2 lukem case NCR_VARIANT_AM53C974: 345 1.83.2.2 lukem case NCR_VARIANT_FAS216: 346 1.83.2.2 lukem case NCR_VARIANT_NCR53C94: 347 1.83.2.2 lukem case NCR_VARIANT_NCR53C96: 348 1.83.2.2 lukem case NCR_VARIANT_ESP200: 349 1.83.2.2 lukem sc->sc_features |= NCR_F_HASCFG3; 350 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 351 1.83.2.2 lukem case NCR_VARIANT_ESP100A: 352 1.83.2.2 lukem sc->sc_features |= NCR_F_SELATN3; 353 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2); 354 1.83.2.2 lukem case NCR_VARIANT_ESP100: 355 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1); 356 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CCF, sc->sc_ccf); 357 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, 0); 358 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_TIMEOUT, sc->sc_timeout); 359 1.83.2.2 lukem break; 360 1.83.2.2 lukem 361 1.83.2.2 lukem case NCR_VARIANT_FAS366: 362 1.83.2.2 lukem sc->sc_features |= 363 1.83.2.2 lukem NCR_F_HASCFG3 | NCR_F_FASTSCSI | NCR_F_SELATN3; 364 1.83.2.2 lukem sc->sc_cfg3 = NCRFASCFG3_FASTCLK | NCRFASCFG3_OBAUTO; 365 1.83.2.2 lukem sc->sc_cfg3_fscsi = NCRFASCFG3_FASTSCSI; 366 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 367 1.83.2.2 lukem sc->sc_cfg2 = 0; /* NCRCFG2_HMEFE| NCRCFG2_HME32 */ 368 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2); 369 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1); 370 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CCF, sc->sc_ccf); 371 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, 0); 372 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_TIMEOUT, sc->sc_timeout); 373 1.83.2.2 lukem break; 374 1.83.2.2 lukem 375 1.83.2.2 lukem default: 376 1.83.2.2 lukem printf("%s: unknown revision code, assuming ESP100\n", 377 1.83.2.2 lukem sc->sc_dev.dv_xname); 378 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG1, sc->sc_cfg1); 379 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CCF, sc->sc_ccf); 380 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, 0); 381 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_TIMEOUT, sc->sc_timeout); 382 1.83.2.2 lukem } 383 1.83.2.2 lukem 384 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_AM53C974) 385 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_AMDCFG4, sc->sc_cfg4); 386 1.83.2.2 lukem 387 1.83.2.2 lukem #if 0 388 1.83.2.2 lukem printf("%s: ncr53c9x_reset: revision %d\n", 389 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_rev); 390 1.83.2.2 lukem printf("%s: ncr53c9x_reset: cfg1 0x%x, cfg2 0x%x, cfg3 0x%x, " 391 1.83.2.2 lukem "ccf 0x%x, timeout 0x%x\n", 392 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_cfg1, sc->sc_cfg2, sc->sc_cfg3, 393 1.83.2.2 lukem sc->sc_ccf, sc->sc_timeout); 394 1.83.2.2 lukem #endif 395 1.83.2.2 lukem } 396 1.83.2.2 lukem 397 1.83.2.2 lukem /* 398 1.83.2.2 lukem * Reset the SCSI bus, but not the chip 399 1.83.2.2 lukem */ 400 1.83.2.2 lukem void 401 1.83.2.2 lukem ncr53c9x_scsi_reset(sc) 402 1.83.2.2 lukem struct ncr53c9x_softc *sc; 403 1.83.2.2 lukem { 404 1.83.2.2 lukem 405 1.83.2.2 lukem (*sc->sc_glue->gl_dma_stop)(sc); 406 1.83.2.2 lukem 407 1.83.2.2 lukem printf("%s: resetting SCSI bus\n", sc->sc_dev.dv_xname); 408 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTSCSI); 409 1.83.2.2 lukem } 410 1.83.2.2 lukem 411 1.83.2.2 lukem /* 412 1.83.2.2 lukem * Initialize ncr53c9x state machine 413 1.83.2.2 lukem */ 414 1.83.2.2 lukem void 415 1.83.2.2 lukem ncr53c9x_init(sc, doreset) 416 1.83.2.2 lukem struct ncr53c9x_softc *sc; 417 1.83.2.2 lukem int doreset; 418 1.83.2.2 lukem { 419 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 420 1.83.2.2 lukem struct ncr53c9x_linfo *li; 421 1.83.2.2 lukem int i, r; 422 1.83.2.2 lukem 423 1.83.2.2 lukem NCR_TRACE(("[NCR_INIT(%d) %d] ", doreset, sc->sc_state)); 424 1.83.2.2 lukem 425 1.83.2.2 lukem if (!ecb_pool_initialized) { 426 1.83.2.2 lukem /* All instances share this pool */ 427 1.83.2.2 lukem pool_init(&ecb_pool, sizeof(struct ncr53c9x_ecb), 0, 0, 0, 428 1.83.2.2 lukem "ncr53c9x_ecb", 0, NULL, NULL, 0); 429 1.83.2.2 lukem ecb_pool_initialized = 1; 430 1.83.2.2 lukem } 431 1.83.2.2 lukem 432 1.83.2.2 lukem if (sc->sc_state == 0) { 433 1.83.2.2 lukem /* First time through; initialize. */ 434 1.83.2.2 lukem 435 1.83.2.2 lukem TAILQ_INIT(&sc->ready_list); 436 1.83.2.2 lukem sc->sc_nexus = NULL; 437 1.83.2.2 lukem memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); 438 1.83.2.2 lukem for (r = 0; r < NCR_NTARG; r++) { 439 1.83.2.2 lukem LIST_INIT(&sc->sc_tinfo[r].luns); 440 1.83.2.2 lukem } 441 1.83.2.2 lukem } else { 442 1.83.2.2 lukem /* Cancel any active commands. */ 443 1.83.2.2 lukem sc->sc_state = NCR_CLEANING; 444 1.83.2.2 lukem sc->sc_msgify = 0; 445 1.83.2.2 lukem if ((ecb = sc->sc_nexus) != NULL) { 446 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 447 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 448 1.83.2.2 lukem } 449 1.83.2.2 lukem /* Cancel outstanding disconnected commands on each LUN */ 450 1.83.2.2 lukem for (r = 0; r < 8; r++) { 451 1.83.2.2 lukem LIST_FOREACH(li, &sc->sc_tinfo[r].luns, link) { 452 1.83.2.2 lukem if ((ecb = li->untagged) != NULL) { 453 1.83.2.2 lukem li->untagged = NULL; 454 1.83.2.2 lukem /* 455 1.83.2.2 lukem * XXXXXXX 456 1.83.2.2 lukem * 457 1.83.2.2 lukem * Should we terminate a command 458 1.83.2.2 lukem * that never reached the disk? 459 1.83.2.2 lukem */ 460 1.83.2.2 lukem li->busy = 0; 461 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 462 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 463 1.83.2.2 lukem } 464 1.83.2.2 lukem for (i = 0; i < 256; i++) 465 1.83.2.2 lukem if ((ecb = li->queued[i])) { 466 1.83.2.2 lukem li->queued[i] = NULL; 467 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 468 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 469 1.83.2.2 lukem } 470 1.83.2.2 lukem li->used = 0; 471 1.83.2.2 lukem } 472 1.83.2.2 lukem } 473 1.83.2.2 lukem } 474 1.83.2.2 lukem 475 1.83.2.2 lukem /* 476 1.83.2.2 lukem * reset the chip to a known state 477 1.83.2.2 lukem */ 478 1.83.2.2 lukem ncr53c9x_reset(sc); 479 1.83.2.2 lukem 480 1.83.2.2 lukem sc->sc_phase = sc->sc_prevphase = INVALID_PHASE; 481 1.83.2.2 lukem for (r = 0; r < 8; r++) { 482 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[r]; 483 1.83.2.2 lukem /* XXX - config flags per target: low bits: no reselect; high bits: no synch */ 484 1.83.2.2 lukem 485 1.83.2.2 lukem ti->flags = ((sc->sc_minsync && !(sc->sc_cfflags & (1<<(r+8)))) 486 1.83.2.2 lukem ? 0 : T_SYNCHOFF) | 487 1.83.2.2 lukem ((sc->sc_cfflags & (1<<r)) ? T_RSELECTOFF : 0) | 488 1.83.2.2 lukem T_NEED_TO_RESET; 489 1.83.2.2 lukem #ifdef DEBUG 490 1.83.2.2 lukem if (ncr53c9x_notag) 491 1.83.2.2 lukem ti->flags &= ~T_TAG; 492 1.83.2.2 lukem #endif 493 1.83.2.2 lukem ti->period = sc->sc_minsync; 494 1.83.2.2 lukem ti->offset = 0; 495 1.83.2.2 lukem ti->cfg3 = 0; 496 1.83.2.2 lukem } 497 1.83.2.2 lukem 498 1.83.2.2 lukem if (doreset) { 499 1.83.2.2 lukem sc->sc_state = NCR_SBR; 500 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTSCSI); 501 1.83.2.2 lukem } else { 502 1.83.2.2 lukem sc->sc_state = NCR_IDLE; 503 1.83.2.2 lukem ncr53c9x_sched(sc); 504 1.83.2.2 lukem } 505 1.83.2.2 lukem } 506 1.83.2.2 lukem 507 1.83.2.2 lukem /* 508 1.83.2.2 lukem * Read the NCR registers, and save their contents for later use. 509 1.83.2.2 lukem * NCR_STAT, NCR_STEP & NCR_INTR are mostly zeroed out when reading 510 1.83.2.2 lukem * NCR_INTR - so make sure it is the last read. 511 1.83.2.2 lukem * 512 1.83.2.2 lukem * I think that (from reading the docs) most bits in these registers 513 1.83.2.2 lukem * only make sense when he DMA CSR has an interrupt showing. Call only 514 1.83.2.2 lukem * if an interrupt is pending. 515 1.83.2.2 lukem */ 516 1.83.2.2 lukem __inline__ void 517 1.83.2.2 lukem ncr53c9x_readregs(sc) 518 1.83.2.2 lukem struct ncr53c9x_softc *sc; 519 1.83.2.2 lukem { 520 1.83.2.2 lukem 521 1.83.2.2 lukem sc->sc_espstat = NCR_READ_REG(sc, NCR_STAT); 522 1.83.2.2 lukem /* Only the stepo bits are of interest */ 523 1.83.2.2 lukem sc->sc_espstep = NCR_READ_REG(sc, NCR_STEP) & NCRSTEP_MASK; 524 1.83.2.2 lukem 525 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) 526 1.83.2.2 lukem sc->sc_espstat2 = NCR_READ_REG(sc, NCR_STAT2); 527 1.83.2.2 lukem 528 1.83.2.2 lukem sc->sc_espintr = NCR_READ_REG(sc, NCR_INTR); 529 1.83.2.2 lukem 530 1.83.2.2 lukem if (sc->sc_glue->gl_clear_latched_intr != NULL) 531 1.83.2.2 lukem (*sc->sc_glue->gl_clear_latched_intr)(sc); 532 1.83.2.2 lukem 533 1.83.2.2 lukem /* 534 1.83.2.2 lukem * Determine the SCSI bus phase, return either a real SCSI bus phase 535 1.83.2.2 lukem * or some pseudo phase we use to detect certain exceptions. 536 1.83.2.2 lukem */ 537 1.83.2.2 lukem 538 1.83.2.2 lukem sc->sc_phase = (sc->sc_espintr & NCRINTR_DIS) ? 539 1.83.2.2 lukem /* Disconnected */ BUSFREE_PHASE : sc->sc_espstat & NCRSTAT_PHASE; 540 1.83.2.2 lukem 541 1.83.2.2 lukem NCR_MISC(("regs[intr=%02x,stat=%02x,step=%02x,stat2=%02x] ", 542 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep, sc->sc_espstat2)); 543 1.83.2.2 lukem } 544 1.83.2.2 lukem 545 1.83.2.2 lukem /* 546 1.83.2.2 lukem * Convert Synchronous Transfer Period to chip register Clock Per Byte value. 547 1.83.2.2 lukem */ 548 1.83.2.2 lukem static inline int 549 1.83.2.2 lukem ncr53c9x_stp2cpb(sc, period) 550 1.83.2.2 lukem struct ncr53c9x_softc *sc; 551 1.83.2.2 lukem int period; 552 1.83.2.2 lukem { 553 1.83.2.2 lukem int v; 554 1.83.2.2 lukem v = (sc->sc_freq * period) / 250; 555 1.83.2.2 lukem if (ncr53c9x_cpb2stp(sc, v) < period) 556 1.83.2.2 lukem /* Correct round-down error */ 557 1.83.2.2 lukem v++; 558 1.83.2.2 lukem return (v); 559 1.83.2.2 lukem } 560 1.83.2.2 lukem 561 1.83.2.2 lukem static inline void 562 1.83.2.2 lukem ncr53c9x_setsync(sc, ti) 563 1.83.2.2 lukem struct ncr53c9x_softc *sc; 564 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 565 1.83.2.2 lukem { 566 1.83.2.2 lukem u_char syncoff, synctp; 567 1.83.2.2 lukem u_char cfg3 = sc->sc_cfg3 | ti->cfg3; 568 1.83.2.2 lukem 569 1.83.2.2 lukem if (ti->flags & T_SYNCMODE) { 570 1.83.2.2 lukem syncoff = ti->offset; 571 1.83.2.2 lukem synctp = ncr53c9x_stp2cpb(sc, ti->period); 572 1.83.2.2 lukem if (sc->sc_features & NCR_F_FASTSCSI) { 573 1.83.2.2 lukem /* 574 1.83.2.2 lukem * If the period is 200ns or less (ti->period <= 50), 575 1.83.2.2 lukem * put the chip in Fast SCSI mode. 576 1.83.2.2 lukem */ 577 1.83.2.2 lukem if (ti->period <= 50) 578 1.83.2.2 lukem /* 579 1.83.2.2 lukem * There are (at least) 4 variations of the 580 1.83.2.2 lukem * configuration 3 register. The drive attach 581 1.83.2.2 lukem * routine sets the appropriate bit to put the 582 1.83.2.2 lukem * chip into Fast SCSI mode so that it doesn't 583 1.83.2.2 lukem * have to be figured out here each time. 584 1.83.2.2 lukem */ 585 1.83.2.2 lukem cfg3 |= sc->sc_cfg3_fscsi; 586 1.83.2.2 lukem } 587 1.83.2.2 lukem 588 1.83.2.2 lukem /* 589 1.83.2.2 lukem * Am53c974 requires different SYNCTP values when the 590 1.83.2.2 lukem * FSCSI bit is off. 591 1.83.2.2 lukem */ 592 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_AM53C974 && 593 1.83.2.2 lukem (cfg3 & NCRAMDCFG3_FSCSI) == 0) 594 1.83.2.2 lukem synctp--; 595 1.83.2.2 lukem } else { 596 1.83.2.2 lukem syncoff = 0; 597 1.83.2.2 lukem synctp = 0; 598 1.83.2.2 lukem } 599 1.83.2.2 lukem 600 1.83.2.2 lukem if (sc->sc_features & NCR_F_HASCFG3) 601 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_CFG3, cfg3); 602 1.83.2.2 lukem 603 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCOFF, syncoff); 604 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SYNCTP, synctp); 605 1.83.2.2 lukem } 606 1.83.2.2 lukem 607 1.83.2.2 lukem /* 608 1.83.2.2 lukem * Send a command to a target, set the driver state to NCR_SELECTING 609 1.83.2.2 lukem * and let the caller take care of the rest. 610 1.83.2.2 lukem * 611 1.83.2.2 lukem * Keeping this as a function allows me to say that this may be done 612 1.83.2.2 lukem * by DMA instead of programmed I/O soon. 613 1.83.2.2 lukem */ 614 1.83.2.2 lukem void 615 1.83.2.2 lukem ncr53c9x_select(sc, ecb) 616 1.83.2.2 lukem struct ncr53c9x_softc *sc; 617 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 618 1.83.2.2 lukem { 619 1.83.2.2 lukem struct scsipi_periph *periph = ecb->xs->xs_periph; 620 1.83.2.2 lukem int target = periph->periph_target; 621 1.83.2.2 lukem int lun = periph->periph_lun; 622 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[target]; 623 1.83.2.2 lukem int tiflags = ti->flags; 624 1.83.2.2 lukem u_char *cmd; 625 1.83.2.2 lukem int clen; 626 1.83.2.2 lukem int selatn3, selatns; 627 1.83.2.2 lukem size_t dmasize; 628 1.83.2.2 lukem 629 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_select(t%d,l%d,cmd:%x,tag:%x,%x)] ", 630 1.83.2.2 lukem target, lun, ecb->cmd.cmd.opcode, ecb->tag[0], ecb->tag[1])); 631 1.83.2.2 lukem 632 1.83.2.2 lukem sc->sc_state = NCR_SELECTING; 633 1.83.2.2 lukem /* 634 1.83.2.2 lukem * Schedule the timeout now, the first time we will go away 635 1.83.2.2 lukem * expecting to come back due to an interrupt, because it is 636 1.83.2.2 lukem * always possible that the interrupt may never happen. 637 1.83.2.2 lukem */ 638 1.83.2.2 lukem if ((ecb->xs->xs_control & XS_CTL_POLL) == 0) { 639 1.83.2.2 lukem int timeout = ecb->timeout; 640 1.83.2.2 lukem 641 1.83.2.2 lukem if (timeout > 1000000) 642 1.83.2.2 lukem timeout = (timeout / 1000) * hz; 643 1.83.2.2 lukem else 644 1.83.2.2 lukem timeout = (timeout * hz) / 1000; 645 1.83.2.2 lukem 646 1.83.2.2 lukem callout_reset(&ecb->xs->xs_callout, timeout, 647 1.83.2.2 lukem ncr53c9x_timeout, ecb); 648 1.83.2.2 lukem } 649 1.83.2.2 lukem 650 1.83.2.2 lukem /* 651 1.83.2.2 lukem * The docs say the target register is never reset, and I 652 1.83.2.2 lukem * can't think of a better place to set it 653 1.83.2.2 lukem */ 654 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 655 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 656 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SELID, target | NCR_BUSID_HME); 657 1.83.2.2 lukem } else { 658 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_SELID, target); 659 1.83.2.2 lukem } 660 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 661 1.83.2.2 lukem 662 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) != 0) { 663 1.83.2.2 lukem /* 664 1.83.2.2 lukem * For REQUEST SENSE, we should not send an IDENTIFY or 665 1.83.2.2 lukem * otherwise mangle the target. There should be no MESSAGE IN 666 1.83.2.2 lukem * phase. 667 1.83.2.2 lukem */ 668 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT) { 669 1.83.2.2 lukem /* setup DMA transfer for command */ 670 1.83.2.2 lukem dmasize = clen = ecb->clen; 671 1.83.2.2 lukem sc->sc_cmdlen = clen; 672 1.83.2.2 lukem sc->sc_cmdp = (caddr_t)&ecb->cmd.cmd; 673 1.83.2.2 lukem 674 1.83.2.2 lukem /* Program the SCSI counter */ 675 1.83.2.2 lukem NCR_SET_COUNT(sc, dmasize); 676 1.83.2.2 lukem 677 1.83.2.2 lukem if (sc->sc_rev != NCR_VARIANT_FAS366) 678 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 679 1.83.2.2 lukem 680 1.83.2.2 lukem /* And get the targets attention */ 681 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELNATN | NCRCMD_DMA); 682 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_cmdp, &sc->sc_cmdlen, 0, 683 1.83.2.2 lukem &dmasize); 684 1.83.2.2 lukem NCRDMA_GO(sc); 685 1.83.2.2 lukem } else { 686 1.83.2.2 lukem ncr53c9x_wrfifo(sc, (u_char *)&ecb->cmd.cmd, ecb->clen); 687 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELNATN); 688 1.83.2.2 lukem } 689 1.83.2.2 lukem return; 690 1.83.2.2 lukem } 691 1.83.2.2 lukem 692 1.83.2.2 lukem selatn3 = selatns = 0; 693 1.83.2.2 lukem if (ecb->tag[0] != 0) { 694 1.83.2.2 lukem if (sc->sc_features & NCR_F_SELATN3) 695 1.83.2.2 lukem /* use SELATN3 to send tag messages */ 696 1.83.2.2 lukem selatn3 = 1; 697 1.83.2.2 lukem else 698 1.83.2.2 lukem /* We don't have SELATN3; use SELATNS to send tags */ 699 1.83.2.2 lukem selatns = 1; 700 1.83.2.2 lukem } 701 1.83.2.2 lukem 702 1.83.2.2 lukem if (ti->flags & T_NEGOTIATE) { 703 1.83.2.2 lukem /* We have to use SELATNS to send sync/wide messages */ 704 1.83.2.2 lukem selatn3 = 0; 705 1.83.2.2 lukem selatns = 1; 706 1.83.2.2 lukem } 707 1.83.2.2 lukem 708 1.83.2.2 lukem cmd = (u_char *)&ecb->cmd.cmd; 709 1.83.2.2 lukem 710 1.83.2.2 lukem if (selatn3) { 711 1.83.2.2 lukem /* We'll use tags with SELATN3 */ 712 1.83.2.2 lukem clen = ecb->clen + 3; 713 1.83.2.2 lukem cmd -= 3; 714 1.83.2.2 lukem cmd[0] = MSG_IDENTIFY(lun, 1); /* msg[0] */ 715 1.83.2.2 lukem cmd[1] = ecb->tag[0]; /* msg[1] */ 716 1.83.2.2 lukem cmd[2] = ecb->tag[1]; /* msg[2] */ 717 1.83.2.2 lukem } else { 718 1.83.2.2 lukem /* We don't have tags, or will send messages with SELATNS */ 719 1.83.2.2 lukem clen = ecb->clen + 1; 720 1.83.2.2 lukem cmd -= 1; 721 1.83.2.2 lukem cmd[0] = MSG_IDENTIFY(lun, (tiflags & T_RSELECTOFF) == 0); 722 1.83.2.2 lukem } 723 1.83.2.2 lukem 724 1.83.2.2 lukem if ((sc->sc_features & NCR_F_DMASELECT) && !selatns) { 725 1.83.2.2 lukem 726 1.83.2.2 lukem /* setup DMA transfer for command */ 727 1.83.2.2 lukem dmasize = clen; 728 1.83.2.2 lukem sc->sc_cmdlen = clen; 729 1.83.2.2 lukem sc->sc_cmdp = cmd; 730 1.83.2.2 lukem 731 1.83.2.2 lukem /* Program the SCSI counter */ 732 1.83.2.2 lukem NCR_SET_COUNT(sc, dmasize); 733 1.83.2.2 lukem 734 1.83.2.2 lukem /* load the count in */ 735 1.83.2.2 lukem /* if (sc->sc_rev != NCR_VARIANT_FAS366) */ 736 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 737 1.83.2.2 lukem 738 1.83.2.2 lukem /* And get the targets attention */ 739 1.83.2.2 lukem if (selatn3) { 740 1.83.2.2 lukem sc->sc_msgout = SEND_TAG; 741 1.83.2.2 lukem sc->sc_flags |= NCR_ATN; 742 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN3 | NCRCMD_DMA); 743 1.83.2.2 lukem } else 744 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN | NCRCMD_DMA); 745 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_cmdp, &sc->sc_cmdlen, 0, &dmasize); 746 1.83.2.2 lukem NCRDMA_GO(sc); 747 1.83.2.2 lukem return; 748 1.83.2.2 lukem } 749 1.83.2.2 lukem 750 1.83.2.2 lukem /* 751 1.83.2.2 lukem * Who am I. This is where we tell the target that we are 752 1.83.2.2 lukem * happy for it to disconnect etc. 753 1.83.2.2 lukem */ 754 1.83.2.2 lukem 755 1.83.2.2 lukem /* Now get the command into the FIFO */ 756 1.83.2.2 lukem ncr53c9x_wrfifo(sc, cmd, clen); 757 1.83.2.2 lukem 758 1.83.2.2 lukem /* And get the targets attention */ 759 1.83.2.2 lukem if (selatns) { 760 1.83.2.2 lukem NCR_MISC(("SELATNS \n")); 761 1.83.2.2 lukem /* Arbitrate, select and stop after IDENTIFY message */ 762 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATNS); 763 1.83.2.2 lukem } else if (selatn3) { 764 1.83.2.2 lukem sc->sc_msgout = SEND_TAG; 765 1.83.2.2 lukem sc->sc_flags |= NCR_ATN; 766 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN3); 767 1.83.2.2 lukem } else 768 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SELATN); 769 1.83.2.2 lukem } 770 1.83.2.2 lukem 771 1.83.2.2 lukem void 772 1.83.2.2 lukem ncr53c9x_free_ecb(sc, ecb) 773 1.83.2.2 lukem struct ncr53c9x_softc *sc; 774 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 775 1.83.2.2 lukem { 776 1.83.2.2 lukem int s; 777 1.83.2.2 lukem 778 1.83.2.2 lukem s = splbio(); 779 1.83.2.2 lukem ecb->flags = 0; 780 1.83.2.2 lukem pool_put(&ecb_pool, (void *)ecb); 781 1.83.2.2 lukem splx(s); 782 1.83.2.2 lukem return; 783 1.83.2.2 lukem } 784 1.83.2.2 lukem 785 1.83.2.2 lukem struct ncr53c9x_ecb * 786 1.83.2.2 lukem ncr53c9x_get_ecb(sc, flags) 787 1.83.2.2 lukem struct ncr53c9x_softc *sc; 788 1.83.2.2 lukem int flags; 789 1.83.2.2 lukem { 790 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 791 1.83.2.2 lukem int s; 792 1.83.2.2 lukem 793 1.83.2.2 lukem s = splbio(); 794 1.83.2.2 lukem ecb = (struct ncr53c9x_ecb *)pool_get(&ecb_pool, PR_NOWAIT); 795 1.83.2.2 lukem splx(s); 796 1.83.2.2 lukem if (ecb) { 797 1.83.2.2 lukem memset(ecb, 0, sizeof(*ecb)); 798 1.83.2.2 lukem ecb->flags |= ECB_ALLOC; 799 1.83.2.2 lukem } 800 1.83.2.2 lukem return (ecb); 801 1.83.2.2 lukem } 802 1.83.2.2 lukem 803 1.83.2.2 lukem /* 804 1.83.2.2 lukem * DRIVER FUNCTIONS CALLABLE FROM HIGHER LEVEL DRIVERS 805 1.83.2.2 lukem */ 806 1.83.2.2 lukem 807 1.83.2.2 lukem /* 808 1.83.2.2 lukem * Start a SCSI-command 809 1.83.2.2 lukem * This function is called by the higher level SCSI-driver to queue/run 810 1.83.2.2 lukem * SCSI-commands. 811 1.83.2.2 lukem */ 812 1.83.2.2 lukem 813 1.83.2.2 lukem void 814 1.83.2.2 lukem ncr53c9x_scsipi_request(chan, req, arg) 815 1.83.2.2 lukem struct scsipi_channel *chan; 816 1.83.2.2 lukem scsipi_adapter_req_t req; 817 1.83.2.2 lukem void *arg; 818 1.83.2.2 lukem { 819 1.83.2.2 lukem struct scsipi_xfer *xs; 820 1.83.2.2 lukem struct scsipi_periph *periph; 821 1.83.2.2 lukem struct ncr53c9x_softc *sc = (void *)chan->chan_adapter->adapt_dev; 822 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 823 1.83.2.2 lukem int s, flags; 824 1.83.2.2 lukem 825 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_scsipi_request] ")); 826 1.83.2.2 lukem 827 1.83.2.2 lukem switch (req) { 828 1.83.2.2 lukem case ADAPTER_REQ_RUN_XFER: 829 1.83.2.2 lukem xs = arg; 830 1.83.2.2 lukem periph = xs->xs_periph; 831 1.83.2.2 lukem flags = xs->xs_control; 832 1.83.2.2 lukem 833 1.83.2.2 lukem NCR_CMDS(("[0x%x, %d]->%d ", (int)xs->cmd->opcode, xs->cmdlen, 834 1.83.2.2 lukem periph->periph_target)); 835 1.83.2.2 lukem 836 1.83.2.2 lukem /* Get an ECB to use. */ 837 1.83.2.2 lukem ecb = ncr53c9x_get_ecb(sc, xs->xs_control); 838 1.83.2.2 lukem /* 839 1.83.2.2 lukem * This should never happen as we track resources 840 1.83.2.2 lukem * in the mid-layer. 841 1.83.2.2 lukem */ 842 1.83.2.2 lukem if (ecb == NULL) { 843 1.83.2.2 lukem scsipi_printaddr(periph); 844 1.83.2.2 lukem printf("unable to allocate ecb\n"); 845 1.83.2.2 lukem xs->error = XS_RESOURCE_SHORTAGE; 846 1.83.2.2 lukem scsipi_done(xs); 847 1.83.2.2 lukem return; 848 1.83.2.2 lukem } 849 1.83.2.2 lukem 850 1.83.2.2 lukem /* Initialize ecb */ 851 1.83.2.2 lukem ecb->xs = xs; 852 1.83.2.2 lukem ecb->timeout = xs->timeout; 853 1.83.2.2 lukem 854 1.83.2.2 lukem if (flags & XS_CTL_RESET) { 855 1.83.2.2 lukem ecb->flags |= ECB_RESET; 856 1.83.2.2 lukem ecb->clen = 0; 857 1.83.2.2 lukem ecb->dleft = 0; 858 1.83.2.2 lukem } else { 859 1.83.2.2 lukem memcpy(&ecb->cmd.cmd, xs->cmd, xs->cmdlen); 860 1.83.2.2 lukem ecb->clen = xs->cmdlen; 861 1.83.2.2 lukem ecb->daddr = xs->data; 862 1.83.2.2 lukem ecb->dleft = xs->datalen; 863 1.83.2.2 lukem } 864 1.83.2.2 lukem ecb->stat = 0; 865 1.83.2.2 lukem 866 1.83.2.2 lukem s = splbio(); 867 1.83.2.2 lukem 868 1.83.2.2 lukem TAILQ_INSERT_TAIL(&sc->ready_list, ecb, chain); 869 1.83.2.2 lukem ecb->flags |= ECB_READY; 870 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) 871 1.83.2.2 lukem ncr53c9x_sched(sc); 872 1.83.2.2 lukem 873 1.83.2.2 lukem splx(s); 874 1.83.2.2 lukem 875 1.83.2.2 lukem if ((flags & XS_CTL_POLL) == 0) 876 1.83.2.2 lukem return; 877 1.83.2.2 lukem 878 1.83.2.2 lukem /* Not allowed to use interrupts, use polling instead */ 879 1.83.2.2 lukem if (ncr53c9x_poll(sc, xs, ecb->timeout)) { 880 1.83.2.2 lukem ncr53c9x_timeout(ecb); 881 1.83.2.2 lukem if (ncr53c9x_poll(sc, xs, ecb->timeout)) 882 1.83.2.2 lukem ncr53c9x_timeout(ecb); 883 1.83.2.2 lukem } 884 1.83.2.2 lukem return; 885 1.83.2.2 lukem 886 1.83.2.2 lukem case ADAPTER_REQ_GROW_RESOURCES: 887 1.83.2.2 lukem /* XXX Not supported. */ 888 1.83.2.2 lukem return; 889 1.83.2.2 lukem 890 1.83.2.2 lukem case ADAPTER_REQ_SET_XFER_MODE: 891 1.83.2.2 lukem { 892 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 893 1.83.2.2 lukem struct scsipi_xfer_mode *xm = arg; 894 1.83.2.2 lukem 895 1.83.2.2 lukem ti = &sc->sc_tinfo[xm->xm_target]; 896 1.83.2.2 lukem ti->flags &= ~(T_NEGOTIATE|T_SYNCMODE); 897 1.83.2.2 lukem ti->period = 0; 898 1.83.2.2 lukem ti->offset = 0; 899 1.83.2.2 lukem 900 1.83.2.2 lukem if ((sc->sc_cfflags & (1<<(xm->xm_target+16))) == 0 && 901 1.83.2.2 lukem (xm->xm_mode & PERIPH_CAP_TQING)) 902 1.83.2.2 lukem ti->flags |= T_TAG; 903 1.83.2.2 lukem else 904 1.83.2.2 lukem ti->flags &= ~T_TAG; 905 1.83.2.2 lukem 906 1.83.2.2 lukem if ((xm->xm_mode & PERIPH_CAP_WIDE16) != 0) { 907 1.83.2.2 lukem NCR_MISC(("%s: target %d: wide scsi negotiation\n", 908 1.83.2.2 lukem sc->sc_dev.dv_xname, xm->xm_target)); 909 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 910 1.83.2.2 lukem ti->flags |= T_WIDE; 911 1.83.2.2 lukem ti->width = 1; 912 1.83.2.2 lukem } 913 1.83.2.2 lukem } 914 1.83.2.2 lukem 915 1.83.2.2 lukem if ((xm->xm_mode & PERIPH_CAP_SYNC) != 0 && 916 1.83.2.2 lukem (ti->flags & T_SYNCHOFF) == 0 && sc->sc_minsync != 0) { 917 1.83.2.2 lukem NCR_MISC(("%s: target %d: sync negotiation\n", 918 1.83.2.2 lukem sc->sc_dev.dv_xname, xm->xm_target)); 919 1.83.2.2 lukem ti->flags |= T_NEGOTIATE; 920 1.83.2.2 lukem ti->period = sc->sc_minsync; 921 1.83.2.2 lukem } 922 1.83.2.2 lukem /* 923 1.83.2.2 lukem * If we're not going to negotiate, send the notification 924 1.83.2.2 lukem * now, since it won't happen later. 925 1.83.2.2 lukem */ 926 1.83.2.2 lukem if ((ti->flags & T_NEGOTIATE) == 0) 927 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, xm->xm_target); 928 1.83.2.2 lukem return; 929 1.83.2.2 lukem } 930 1.83.2.2 lukem } 931 1.83.2.2 lukem } 932 1.83.2.2 lukem 933 1.83.2.2 lukem void 934 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, target) 935 1.83.2.2 lukem struct ncr53c9x_softc *sc; 936 1.83.2.2 lukem int target; 937 1.83.2.2 lukem { 938 1.83.2.2 lukem struct scsipi_xfer_mode xm; 939 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[target]; 940 1.83.2.2 lukem 941 1.83.2.2 lukem xm.xm_target = target; 942 1.83.2.2 lukem xm.xm_mode = 0; 943 1.83.2.2 lukem xm.xm_period = 0; 944 1.83.2.2 lukem xm.xm_offset = 0; 945 1.83.2.2 lukem 946 1.83.2.2 lukem if (ti->flags & T_SYNCMODE) { 947 1.83.2.2 lukem xm.xm_mode |= PERIPH_CAP_SYNC; 948 1.83.2.2 lukem xm.xm_period = ti->period; 949 1.83.2.2 lukem xm.xm_offset = ti->offset; 950 1.83.2.2 lukem } 951 1.83.2.2 lukem if (ti->width) 952 1.83.2.2 lukem xm.xm_mode |= PERIPH_CAP_WIDE16; 953 1.83.2.2 lukem 954 1.83.2.2 lukem if ((ti->flags & (T_RSELECTOFF|T_TAG)) == T_TAG) 955 1.83.2.2 lukem xm.xm_mode |= PERIPH_CAP_TQING; 956 1.83.2.2 lukem 957 1.83.2.2 lukem scsipi_async_event(&sc->sc_channel, ASYNC_EVENT_XFER_MODE, &xm); 958 1.83.2.2 lukem } 959 1.83.2.2 lukem 960 1.83.2.2 lukem /* 961 1.83.2.2 lukem * Used when interrupt driven I/O isn't allowed, e.g. during boot. 962 1.83.2.2 lukem */ 963 1.83.2.2 lukem int 964 1.83.2.2 lukem ncr53c9x_poll(sc, xs, count) 965 1.83.2.2 lukem struct ncr53c9x_softc *sc; 966 1.83.2.2 lukem struct scsipi_xfer *xs; 967 1.83.2.2 lukem int count; 968 1.83.2.2 lukem { 969 1.83.2.2 lukem 970 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_poll] ")); 971 1.83.2.2 lukem while (count) { 972 1.83.2.2 lukem if (NCRDMA_ISINTR(sc)) { 973 1.83.2.2 lukem ncr53c9x_intr(sc); 974 1.83.2.2 lukem } 975 1.83.2.2 lukem #if alternatively 976 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT) 977 1.83.2.2 lukem ncr53c9x_intr(sc); 978 1.83.2.2 lukem #endif 979 1.83.2.2 lukem if ((xs->xs_status & XS_STS_DONE) != 0) 980 1.83.2.2 lukem return (0); 981 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) { 982 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_poll: rescheduling] ")); 983 1.83.2.2 lukem ncr53c9x_sched(sc); 984 1.83.2.2 lukem } 985 1.83.2.2 lukem DELAY(1000); 986 1.83.2.2 lukem count--; 987 1.83.2.2 lukem } 988 1.83.2.2 lukem return (1); 989 1.83.2.2 lukem } 990 1.83.2.2 lukem 991 1.83.2.2 lukem int 992 1.83.2.2 lukem ncr53c9x_ioctl(chan, cmd, arg, flag, p) 993 1.83.2.2 lukem struct scsipi_channel *chan; 994 1.83.2.2 lukem u_long cmd; 995 1.83.2.2 lukem caddr_t arg; 996 1.83.2.2 lukem int flag; 997 1.83.2.2 lukem struct proc *p; 998 1.83.2.2 lukem { 999 1.83.2.2 lukem /* struct ncr53c9x_softc *sc = (void *)chan->chan_adapter->adapt_dev; */ 1000 1.83.2.2 lukem int s, error = 0; 1001 1.83.2.2 lukem 1002 1.83.2.2 lukem s = splbio(); 1003 1.83.2.2 lukem 1004 1.83.2.2 lukem switch (cmd) { 1005 1.83.2.2 lukem default: 1006 1.83.2.2 lukem error = ENOTTY; 1007 1.83.2.2 lukem break; 1008 1.83.2.2 lukem } 1009 1.83.2.2 lukem splx(s); 1010 1.83.2.2 lukem return (error); 1011 1.83.2.2 lukem } 1012 1.83.2.2 lukem 1013 1.83.2.2 lukem 1014 1.83.2.2 lukem /* 1015 1.83.2.2 lukem * LOW LEVEL SCSI UTILITIES 1016 1.83.2.2 lukem */ 1017 1.83.2.2 lukem 1018 1.83.2.2 lukem /* 1019 1.83.2.2 lukem * Schedule a scsi operation. This has now been pulled out of the interrupt 1020 1.83.2.2 lukem * handler so that we may call it from ncr53c9x_scsipi_request and 1021 1.83.2.2 lukem * ncr53c9x_done. This may save us an unecessary interrupt just to get 1022 1.83.2.2 lukem * things going. Should only be called when state == NCR_IDLE and at bio pl. 1023 1.83.2.2 lukem */ 1024 1.83.2.2 lukem void 1025 1.83.2.2 lukem ncr53c9x_sched(sc) 1026 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1027 1.83.2.2 lukem { 1028 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1029 1.83.2.2 lukem struct scsipi_periph *periph; 1030 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1031 1.83.2.2 lukem int lun; 1032 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1033 1.83.2.2 lukem int s, tag; 1034 1.83.2.2 lukem 1035 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_sched] ")); 1036 1.83.2.2 lukem if (sc->sc_state != NCR_IDLE) 1037 1.83.2.2 lukem panic("ncr53c9x_sched: not IDLE (state=%d)", sc->sc_state); 1038 1.83.2.2 lukem 1039 1.83.2.2 lukem /* 1040 1.83.2.2 lukem * Find first ecb in ready queue that is for a target/lunit 1041 1.83.2.2 lukem * combinations that is not busy. 1042 1.83.2.2 lukem */ 1043 1.83.2.2 lukem for (ecb = TAILQ_FIRST(&sc->ready_list); ecb != NULL; 1044 1.83.2.2 lukem ecb = TAILQ_NEXT(ecb, chain)) { 1045 1.83.2.2 lukem periph = ecb->xs->xs_periph; 1046 1.83.2.2 lukem ti = &sc->sc_tinfo[periph->periph_target]; 1047 1.83.2.2 lukem lun = periph->periph_lun; 1048 1.83.2.2 lukem 1049 1.83.2.2 lukem /* Select type of tag for this command */ 1050 1.83.2.2 lukem if ((ti->flags & (T_RSELECTOFF)) != 0) 1051 1.83.2.2 lukem tag = 0; 1052 1.83.2.2 lukem else if ((ti->flags & (T_TAG)) == 0) 1053 1.83.2.2 lukem tag = 0; 1054 1.83.2.2 lukem else if ((ecb->flags & ECB_SENSE) != 0) 1055 1.83.2.2 lukem tag = 0; 1056 1.83.2.2 lukem else 1057 1.83.2.2 lukem tag = ecb->xs->xs_tag_type; 1058 1.83.2.2 lukem #if 0 1059 1.83.2.2 lukem /* XXXX Use tags for polled commands? */ 1060 1.83.2.2 lukem if (ecb->xs->xs_control & XS_CTL_POLL) 1061 1.83.2.2 lukem tag = 0; 1062 1.83.2.2 lukem #endif 1063 1.83.2.2 lukem 1064 1.83.2.2 lukem s = splbio(); 1065 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1066 1.83.2.2 lukem if (li == NULL) { 1067 1.83.2.2 lukem /* Initialize LUN info and add to list. */ 1068 1.83.2.2 lukem if ((li = malloc(sizeof(*li), M_DEVBUF, M_NOWAIT)) 1069 1.83.2.2 lukem == NULL) { 1070 1.83.2.2 lukem splx(s); 1071 1.83.2.2 lukem continue; 1072 1.83.2.2 lukem } 1073 1.83.2.2 lukem memset(li, 0, sizeof(*li)); 1074 1.83.2.2 lukem li->lun = lun; 1075 1.83.2.2 lukem 1076 1.83.2.2 lukem LIST_INSERT_HEAD(&ti->luns, li, link); 1077 1.83.2.2 lukem if (lun < NCR_NLUN) 1078 1.83.2.2 lukem ti->lun[lun] = li; 1079 1.83.2.2 lukem } 1080 1.83.2.2 lukem li->last_used = time.tv_sec; 1081 1.83.2.2 lukem if (tag == 0) { 1082 1.83.2.2 lukem /* Try to issue this as an un-tagged command */ 1083 1.83.2.2 lukem if (li->untagged == NULL) 1084 1.83.2.2 lukem li->untagged = ecb; 1085 1.83.2.2 lukem } 1086 1.83.2.2 lukem if (li->untagged != NULL) { 1087 1.83.2.2 lukem tag = 0; 1088 1.83.2.2 lukem if ((li->busy != 1) && li->used == 0) { 1089 1.83.2.2 lukem /* We need to issue this untagged command now */ 1090 1.83.2.2 lukem ecb = li->untagged; 1091 1.83.2.2 lukem periph = ecb->xs->xs_periph; 1092 1.83.2.2 lukem } else { 1093 1.83.2.2 lukem /* Not ready yet */ 1094 1.83.2.2 lukem splx(s); 1095 1.83.2.2 lukem continue; 1096 1.83.2.2 lukem } 1097 1.83.2.2 lukem } 1098 1.83.2.2 lukem ecb->tag[0] = tag; 1099 1.83.2.2 lukem if (tag != 0) { 1100 1.83.2.2 lukem li->queued[ecb->xs->xs_tag_id] = ecb; 1101 1.83.2.2 lukem ecb->tag[1] = ecb->xs->xs_tag_id; 1102 1.83.2.2 lukem li->used++; 1103 1.83.2.2 lukem } 1104 1.83.2.2 lukem splx(s); 1105 1.83.2.2 lukem if (li->untagged != NULL && (li->busy != 1)) { 1106 1.83.2.2 lukem li->busy = 1; 1107 1.83.2.2 lukem TAILQ_REMOVE(&sc->ready_list, ecb, chain); 1108 1.83.2.2 lukem ecb->flags &= ~ECB_READY; 1109 1.83.2.2 lukem sc->sc_nexus = ecb; 1110 1.83.2.2 lukem ncr53c9x_select(sc, ecb); 1111 1.83.2.2 lukem break; 1112 1.83.2.2 lukem } 1113 1.83.2.2 lukem if (li->untagged == NULL && tag != 0) { 1114 1.83.2.2 lukem TAILQ_REMOVE(&sc->ready_list, ecb, chain); 1115 1.83.2.2 lukem ecb->flags &= ~ECB_READY; 1116 1.83.2.2 lukem sc->sc_nexus = ecb; 1117 1.83.2.2 lukem ncr53c9x_select(sc, ecb); 1118 1.83.2.2 lukem break; 1119 1.83.2.2 lukem } else 1120 1.83.2.2 lukem NCR_MISC(("%d:%d busy\n", 1121 1.83.2.2 lukem periph->periph_target, 1122 1.83.2.2 lukem periph->periph_lun)); 1123 1.83.2.2 lukem } 1124 1.83.2.2 lukem } 1125 1.83.2.2 lukem 1126 1.83.2.2 lukem void 1127 1.83.2.2 lukem ncr53c9x_sense(sc, ecb) 1128 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1129 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1130 1.83.2.2 lukem { 1131 1.83.2.2 lukem struct scsipi_xfer *xs = ecb->xs; 1132 1.83.2.2 lukem struct scsipi_periph *periph = xs->xs_periph; 1133 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[periph->periph_target]; 1134 1.83.2.2 lukem struct scsipi_sense *ss = (void *)&ecb->cmd.cmd; 1135 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1136 1.83.2.2 lukem int lun = periph->periph_lun; 1137 1.83.2.2 lukem 1138 1.83.2.2 lukem NCR_MISC(("requesting sense ")); 1139 1.83.2.2 lukem /* Next, setup a request sense command block */ 1140 1.83.2.2 lukem memset(ss, 0, sizeof(*ss)); 1141 1.83.2.2 lukem ss->opcode = REQUEST_SENSE; 1142 1.83.2.2 lukem ss->byte2 = periph->periph_lun << SCSI_CMD_LUN_SHIFT; 1143 1.83.2.2 lukem ss->length = sizeof(struct scsipi_sense_data); 1144 1.83.2.2 lukem ecb->clen = sizeof(*ss); 1145 1.83.2.2 lukem ecb->daddr = (char *)&xs->sense.scsi_sense; 1146 1.83.2.2 lukem ecb->dleft = sizeof(struct scsipi_sense_data); 1147 1.83.2.2 lukem ecb->flags |= ECB_SENSE; 1148 1.83.2.2 lukem ecb->timeout = NCR_SENSE_TIMEOUT; 1149 1.83.2.2 lukem ti->senses++; 1150 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1151 1.83.2.2 lukem if (li->busy) 1152 1.83.2.2 lukem li->busy = 0; 1153 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb); 1154 1.83.2.2 lukem li->untagged = ecb; /* must be executed first to fix C/A */ 1155 1.83.2.2 lukem li->busy = 2; 1156 1.83.2.2 lukem if (ecb == sc->sc_nexus) { 1157 1.83.2.2 lukem ncr53c9x_select(sc, ecb); 1158 1.83.2.2 lukem } else { 1159 1.83.2.2 lukem TAILQ_INSERT_HEAD(&sc->ready_list, ecb, chain); 1160 1.83.2.2 lukem ecb->flags |= ECB_READY; 1161 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) 1162 1.83.2.2 lukem ncr53c9x_sched(sc); 1163 1.83.2.2 lukem } 1164 1.83.2.2 lukem } 1165 1.83.2.2 lukem 1166 1.83.2.2 lukem /* 1167 1.83.2.2 lukem * POST PROCESSING OF SCSI_CMD (usually current) 1168 1.83.2.2 lukem */ 1169 1.83.2.2 lukem void 1170 1.83.2.2 lukem ncr53c9x_done(sc, ecb) 1171 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1172 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1173 1.83.2.2 lukem { 1174 1.83.2.2 lukem struct scsipi_xfer *xs = ecb->xs; 1175 1.83.2.2 lukem struct scsipi_periph *periph = xs->xs_periph; 1176 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[periph->periph_target]; 1177 1.83.2.2 lukem int lun = periph->periph_lun; 1178 1.83.2.2 lukem struct ncr53c9x_linfo *li = TINFO_LUN(ti, lun); 1179 1.83.2.2 lukem 1180 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_done(error:%x)] ", xs->error)); 1181 1.83.2.2 lukem 1182 1.83.2.2 lukem callout_stop(&ecb->xs->xs_callout); 1183 1.83.2.2 lukem 1184 1.83.2.2 lukem /* 1185 1.83.2.2 lukem * Now, if we've come here with no error code, i.e. we've kept the 1186 1.83.2.2 lukem * initial XS_NOERROR, and the status code signals that we should 1187 1.83.2.2 lukem * check sense, we'll need to set up a request sense cmd block and 1188 1.83.2.2 lukem * push the command back into the ready queue *before* any other 1189 1.83.2.2 lukem * commands for this target/lunit, else we lose the sense info. 1190 1.83.2.2 lukem * We don't support chk sense conditions for the request sense cmd. 1191 1.83.2.2 lukem */ 1192 1.83.2.2 lukem if (xs->error == XS_NOERROR) { 1193 1.83.2.2 lukem xs->status = ecb->stat; 1194 1.83.2.2 lukem if ((ecb->flags & ECB_ABORT) != 0) { 1195 1.83.2.2 lukem xs->error = XS_TIMEOUT; 1196 1.83.2.2 lukem } else if ((ecb->flags & ECB_SENSE) != 0) { 1197 1.83.2.2 lukem xs->error = XS_SENSE; 1198 1.83.2.2 lukem } else if ((ecb->stat & ST_MASK) == SCSI_CHECK) { 1199 1.83.2.2 lukem /* First, save the return values */ 1200 1.83.2.2 lukem xs->resid = ecb->dleft; 1201 1.83.2.2 lukem ncr53c9x_sense(sc, ecb); 1202 1.83.2.2 lukem return; 1203 1.83.2.2 lukem } else { 1204 1.83.2.2 lukem xs->resid = ecb->dleft; 1205 1.83.2.2 lukem } 1206 1.83.2.2 lukem if (xs->status == SCSI_QUEUE_FULL || xs->status == XS_BUSY) 1207 1.83.2.2 lukem xs->error = XS_BUSY; 1208 1.83.2.2 lukem } 1209 1.83.2.2 lukem 1210 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1211 1.83.2.2 lukem if (ncr53c9x_debug & NCR_SHOWMISC) { 1212 1.83.2.2 lukem if (xs->resid != 0) 1213 1.83.2.2 lukem printf("resid=%d ", xs->resid); 1214 1.83.2.2 lukem if (xs->error == XS_SENSE) 1215 1.83.2.2 lukem printf("sense=0x%02x\n", 1216 1.83.2.2 lukem xs->sense.scsi_sense.error_code); 1217 1.83.2.2 lukem else 1218 1.83.2.2 lukem printf("error=%d\n", xs->error); 1219 1.83.2.2 lukem } 1220 1.83.2.2 lukem #endif 1221 1.83.2.2 lukem 1222 1.83.2.2 lukem /* 1223 1.83.2.2 lukem * Remove the ECB from whatever queue it's on. 1224 1.83.2.2 lukem */ 1225 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb); 1226 1.83.2.2 lukem if (ecb == sc->sc_nexus) { 1227 1.83.2.2 lukem sc->sc_nexus = NULL; 1228 1.83.2.2 lukem if (sc->sc_state != NCR_CLEANING) { 1229 1.83.2.2 lukem sc->sc_state = NCR_IDLE; 1230 1.83.2.2 lukem ncr53c9x_sched(sc); 1231 1.83.2.2 lukem } 1232 1.83.2.2 lukem } 1233 1.83.2.2 lukem 1234 1.83.2.2 lukem if (xs->error == XS_SELTIMEOUT) { 1235 1.83.2.2 lukem /* Selection timeout -- discard this LUN if empty */ 1236 1.83.2.2 lukem if (li->untagged == NULL && li->used == 0) { 1237 1.83.2.2 lukem if (lun < NCR_NLUN) 1238 1.83.2.2 lukem ti->lun[lun] = NULL; 1239 1.83.2.2 lukem LIST_REMOVE(li, link); 1240 1.83.2.2 lukem free(li, M_DEVBUF); 1241 1.83.2.2 lukem } 1242 1.83.2.2 lukem } 1243 1.83.2.2 lukem 1244 1.83.2.2 lukem ncr53c9x_free_ecb(sc, ecb); 1245 1.83.2.2 lukem ti->cmds++; 1246 1.83.2.2 lukem scsipi_done(xs); 1247 1.83.2.2 lukem } 1248 1.83.2.2 lukem 1249 1.83.2.2 lukem void 1250 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb) 1251 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1252 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1253 1.83.2.2 lukem { 1254 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = 1255 1.83.2.2 lukem &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1256 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1257 1.83.2.2 lukem int64_t lun = ecb->xs->xs_periph->periph_lun; 1258 1.83.2.2 lukem 1259 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1260 1.83.2.2 lukem #ifdef DIAGNOSTIC 1261 1.83.2.2 lukem if (li == NULL || li->lun != lun) 1262 1.83.2.2 lukem panic("ncr53c9x_dequeue: lun %qx for ecb %p does not exist\n", 1263 1.83.2.2 lukem (long long) lun, ecb); 1264 1.83.2.2 lukem #endif 1265 1.83.2.2 lukem if (li->untagged == ecb) { 1266 1.83.2.2 lukem li->busy = 0; 1267 1.83.2.2 lukem li->untagged = NULL; 1268 1.83.2.2 lukem } 1269 1.83.2.2 lukem if (ecb->tag[0] && li->queued[ecb->tag[1]] != NULL) { 1270 1.83.2.2 lukem #ifdef DIAGNOSTIC 1271 1.83.2.2 lukem if (li->queued[ecb->tag[1]] != NULL && 1272 1.83.2.2 lukem (li->queued[ecb->tag[1]] != ecb)) 1273 1.83.2.2 lukem panic("ncr53c9x_dequeue: slot %d for lun %qx has %p " 1274 1.83.2.2 lukem "instead of ecb %p\n", ecb->tag[1], 1275 1.83.2.2 lukem (long long) lun, 1276 1.83.2.2 lukem li->queued[ecb->tag[1]], ecb); 1277 1.83.2.2 lukem #endif 1278 1.83.2.2 lukem li->queued[ecb->tag[1]] = NULL; 1279 1.83.2.2 lukem li->used--; 1280 1.83.2.2 lukem } 1281 1.83.2.2 lukem 1282 1.83.2.2 lukem if ((ecb->flags & ECB_READY) != 0) { 1283 1.83.2.2 lukem ecb->flags &= ~ECB_READY; 1284 1.83.2.2 lukem TAILQ_REMOVE(&sc->ready_list, ecb, chain); 1285 1.83.2.2 lukem } 1286 1.83.2.2 lukem } 1287 1.83.2.2 lukem 1288 1.83.2.2 lukem /* 1289 1.83.2.2 lukem * INTERRUPT/PROTOCOL ENGINE 1290 1.83.2.2 lukem */ 1291 1.83.2.2 lukem 1292 1.83.2.2 lukem /* 1293 1.83.2.2 lukem * Schedule an outgoing message by prioritizing it, and asserting 1294 1.83.2.2 lukem * attention on the bus. We can only do this when we are the initiator 1295 1.83.2.2 lukem * else there will be an illegal command interrupt. 1296 1.83.2.2 lukem */ 1297 1.83.2.2 lukem #define ncr53c9x_sched_msgout(m) \ 1298 1.83.2.2 lukem do { \ 1299 1.83.2.2 lukem NCR_MISC(("ncr53c9x_sched_msgout %x %d", m, __LINE__)); \ 1300 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SETATN); \ 1301 1.83.2.2 lukem sc->sc_flags |= NCR_ATN; \ 1302 1.83.2.2 lukem sc->sc_msgpriq |= (m); \ 1303 1.83.2.2 lukem } while (0) 1304 1.83.2.2 lukem 1305 1.83.2.2 lukem static void 1306 1.83.2.2 lukem ncr53c9x_flushfifo(struct ncr53c9x_softc *sc) 1307 1.83.2.2 lukem { 1308 1.83.2.2 lukem NCR_MISC(("[flushfifo] ")); 1309 1.83.2.2 lukem 1310 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 1311 1.83.2.2 lukem 1312 1.83.2.2 lukem if (sc->sc_phase == COMMAND_PHASE || 1313 1.83.2.2 lukem sc->sc_phase == MESSAGE_OUT_PHASE) 1314 1.83.2.2 lukem DELAY(2); 1315 1.83.2.2 lukem } 1316 1.83.2.2 lukem 1317 1.83.2.2 lukem static int 1318 1.83.2.2 lukem ncr53c9x_rdfifo(struct ncr53c9x_softc *sc, int how) 1319 1.83.2.2 lukem { 1320 1.83.2.2 lukem int i, n; 1321 1.83.2.2 lukem u_char *buf; 1322 1.83.2.2 lukem 1323 1.83.2.2 lukem switch(how) { 1324 1.83.2.2 lukem case NCR_RDFIFO_START: 1325 1.83.2.2 lukem buf = sc->sc_imess; 1326 1.83.2.2 lukem sc->sc_imlen = 0; 1327 1.83.2.2 lukem break; 1328 1.83.2.2 lukem case NCR_RDFIFO_CONTINUE: 1329 1.83.2.2 lukem buf = sc->sc_imess + sc->sc_imlen; 1330 1.83.2.2 lukem break; 1331 1.83.2.2 lukem default: 1332 1.83.2.2 lukem panic("ncr53c9x_rdfifo: bad flag\n"); 1333 1.83.2.2 lukem break; 1334 1.83.2.2 lukem } 1335 1.83.2.2 lukem 1336 1.83.2.2 lukem /* 1337 1.83.2.2 lukem * XXX buffer (sc_imess) size for message 1338 1.83.2.2 lukem */ 1339 1.83.2.2 lukem 1340 1.83.2.2 lukem n = NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF; 1341 1.83.2.2 lukem 1342 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 1343 1.83.2.2 lukem n *= 2; 1344 1.83.2.2 lukem 1345 1.83.2.2 lukem for (i = 0; i < n; i++) 1346 1.83.2.2 lukem buf[i] = NCR_READ_REG(sc, NCR_FIFO); 1347 1.83.2.2 lukem 1348 1.83.2.2 lukem if (sc->sc_espstat2 & NCRFAS_STAT2_ISHUTTLE) { 1349 1.83.2.2 lukem 1350 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_FIFO, 0); 1351 1.83.2.2 lukem buf[i++] = NCR_READ_REG(sc, NCR_FIFO); 1352 1.83.2.2 lukem 1353 1.83.2.2 lukem NCR_READ_REG(sc, NCR_FIFO); 1354 1.83.2.2 lukem 1355 1.83.2.2 lukem ncr53c9x_flushfifo(sc); 1356 1.83.2.2 lukem } 1357 1.83.2.2 lukem } else { 1358 1.83.2.2 lukem for (i = 0; i < n; i++) 1359 1.83.2.2 lukem buf[i] = NCR_READ_REG(sc, NCR_FIFO); 1360 1.83.2.2 lukem } 1361 1.83.2.2 lukem 1362 1.83.2.2 lukem sc->sc_imlen += i; 1363 1.83.2.2 lukem 1364 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1365 1.83.2.2 lukem { 1366 1.83.2.2 lukem int j; 1367 1.83.2.2 lukem 1368 1.83.2.2 lukem NCR_TRACE(("\n[rdfifo %s (%d):", 1369 1.83.2.2 lukem (how == NCR_RDFIFO_START) ? "start" : "cont", 1370 1.83.2.2 lukem (int)sc->sc_imlen)); 1371 1.83.2.2 lukem if (ncr53c9x_debug & NCR_SHOWTRAC) { 1372 1.83.2.2 lukem for (j = 0; j < sc->sc_imlen; j++) 1373 1.83.2.2 lukem printf(" %02x", sc->sc_imess[j]); 1374 1.83.2.2 lukem printf("]\n"); 1375 1.83.2.2 lukem } 1376 1.83.2.2 lukem } 1377 1.83.2.2 lukem #endif 1378 1.83.2.2 lukem return sc->sc_imlen; 1379 1.83.2.2 lukem } 1380 1.83.2.2 lukem 1381 1.83.2.2 lukem static void 1382 1.83.2.2 lukem ncr53c9x_wrfifo(struct ncr53c9x_softc *sc, u_char *p, int len) 1383 1.83.2.2 lukem { 1384 1.83.2.2 lukem int i; 1385 1.83.2.2 lukem 1386 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1387 1.83.2.2 lukem NCR_MISC(("[wrfifo(%d):", len)); 1388 1.83.2.2 lukem if (ncr53c9x_debug & NCR_SHOWTRAC) { 1389 1.83.2.2 lukem for (i = 0; i < len; i++) 1390 1.83.2.2 lukem printf(" %02x", p[i]); 1391 1.83.2.2 lukem printf("]\n"); 1392 1.83.2.2 lukem } 1393 1.83.2.2 lukem #endif 1394 1.83.2.2 lukem 1395 1.83.2.2 lukem for (i = 0; i < len; i++) { 1396 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_FIFO, p[i]); 1397 1.83.2.2 lukem 1398 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) 1399 1.83.2.2 lukem NCR_WRITE_REG(sc, NCR_FIFO, 0); 1400 1.83.2.2 lukem } 1401 1.83.2.2 lukem } 1402 1.83.2.2 lukem 1403 1.83.2.2 lukem int 1404 1.83.2.2 lukem ncr53c9x_reselect(sc, message, tagtype, tagid) 1405 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1406 1.83.2.2 lukem int message; 1407 1.83.2.2 lukem int tagtype, tagid; 1408 1.83.2.2 lukem { 1409 1.83.2.2 lukem u_char selid, target, lun; 1410 1.83.2.2 lukem struct ncr53c9x_ecb *ecb = NULL; 1411 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1412 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1413 1.83.2.2 lukem 1414 1.83.2.2 lukem 1415 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 1416 1.83.2.2 lukem target = sc->sc_selid; 1417 1.83.2.2 lukem } else { 1418 1.83.2.2 lukem /* 1419 1.83.2.2 lukem * The SCSI chip made a snapshot of the data bus 1420 1.83.2.2 lukem * while the reselection was being negotiated. 1421 1.83.2.2 lukem * This enables us to determine which target did 1422 1.83.2.2 lukem * the reselect. 1423 1.83.2.2 lukem */ 1424 1.83.2.2 lukem selid = sc->sc_selid & ~(1 << sc->sc_id); 1425 1.83.2.2 lukem if (selid & (selid - 1)) { 1426 1.83.2.2 lukem printf("%s: reselect with invalid selid %02x;" 1427 1.83.2.2 lukem " sending DEVICE RESET\n", 1428 1.83.2.2 lukem sc->sc_dev.dv_xname, selid); 1429 1.83.2.2 lukem goto reset; 1430 1.83.2.2 lukem } 1431 1.83.2.2 lukem 1432 1.83.2.2 lukem target = ffs(selid) - 1; 1433 1.83.2.2 lukem } 1434 1.83.2.2 lukem lun = message & 0x07; 1435 1.83.2.2 lukem 1436 1.83.2.2 lukem /* 1437 1.83.2.2 lukem * Search wait queue for disconnected cmd 1438 1.83.2.2 lukem * The list should be short, so I haven't bothered with 1439 1.83.2.2 lukem * any more sophisticated structures than a simple 1440 1.83.2.2 lukem * singly linked list. 1441 1.83.2.2 lukem */ 1442 1.83.2.2 lukem ti = &sc->sc_tinfo[target]; 1443 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1444 1.83.2.2 lukem 1445 1.83.2.2 lukem /* 1446 1.83.2.2 lukem * We can get as far as the LUN with the IDENTIFY 1447 1.83.2.2 lukem * message. Check to see if we're running an 1448 1.83.2.2 lukem * un-tagged command. Otherwise ack the IDENTIFY 1449 1.83.2.2 lukem * and wait for a tag message. 1450 1.83.2.2 lukem */ 1451 1.83.2.2 lukem if (li != NULL) { 1452 1.83.2.2 lukem if (li->untagged != NULL && li->busy) 1453 1.83.2.2 lukem ecb = li->untagged; 1454 1.83.2.2 lukem else if (tagtype != MSG_SIMPLE_Q_TAG) { 1455 1.83.2.2 lukem /* Wait for tag to come by */ 1456 1.83.2.2 lukem sc->sc_state = NCR_IDENTIFIED; 1457 1.83.2.2 lukem return (0); 1458 1.83.2.2 lukem } else if (tagtype) 1459 1.83.2.2 lukem ecb = li->queued[tagid]; 1460 1.83.2.2 lukem } 1461 1.83.2.2 lukem if (ecb == NULL) { 1462 1.83.2.2 lukem printf("%s: reselect from target %d lun %d tag %x:%x " 1463 1.83.2.2 lukem "with no nexus; sending ABORT\n", 1464 1.83.2.2 lukem sc->sc_dev.dv_xname, target, lun, tagtype, tagid); 1465 1.83.2.2 lukem goto abort; 1466 1.83.2.2 lukem } 1467 1.83.2.2 lukem 1468 1.83.2.2 lukem /* Make this nexus active again. */ 1469 1.83.2.2 lukem sc->sc_state = NCR_CONNECTED; 1470 1.83.2.2 lukem sc->sc_nexus = ecb; 1471 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1472 1.83.2.2 lukem 1473 1.83.2.2 lukem if (ecb->flags & ECB_RESET) 1474 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_DEV_RESET); 1475 1.83.2.2 lukem else if (ecb->flags & ECB_ABORT) 1476 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 1477 1.83.2.2 lukem 1478 1.83.2.2 lukem /* Do an implicit RESTORE POINTERS. */ 1479 1.83.2.2 lukem sc->sc_dp = ecb->daddr; 1480 1.83.2.2 lukem sc->sc_dleft = ecb->dleft; 1481 1.83.2.2 lukem 1482 1.83.2.2 lukem return (0); 1483 1.83.2.2 lukem 1484 1.83.2.2 lukem reset: 1485 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_DEV_RESET); 1486 1.83.2.2 lukem return (1); 1487 1.83.2.2 lukem 1488 1.83.2.2 lukem abort: 1489 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 1490 1.83.2.2 lukem return (1); 1491 1.83.2.2 lukem } 1492 1.83.2.2 lukem 1493 1.83.2.2 lukem 1494 1.83.2.2 lukem /* 1495 1.83.2.2 lukem * XXX this might be common thing(check with scsipi) 1496 1.83.2.2 lukem */ 1497 1.83.2.2 lukem #define IS1BYTEMSG(m) (((m) != 1 && (m) < 0x20) || (m) & 0x80) 1498 1.83.2.2 lukem #define IS2BYTEMSG(m) (((m) & 0xf0) == 0x20) 1499 1.83.2.2 lukem #define ISEXTMSG(m) ((m) == 1) 1500 1.83.2.2 lukem 1501 1.83.2.2 lukem static inline int 1502 1.83.2.2 lukem __verify_msg_format(u_char *p, int len) 1503 1.83.2.2 lukem { 1504 1.83.2.2 lukem 1505 1.83.2.2 lukem if (len == 1 && IS1BYTEMSG(p[0])) 1506 1.83.2.2 lukem return 1; 1507 1.83.2.2 lukem if (len == 2 && IS2BYTEMSG(p[0])) 1508 1.83.2.2 lukem return 1; 1509 1.83.2.2 lukem if (len >= 3 && ISEXTMSG(p[0]) && 1510 1.83.2.2 lukem len == p[1] + 2) 1511 1.83.2.2 lukem return 1; 1512 1.83.2.2 lukem 1513 1.83.2.2 lukem return 0; 1514 1.83.2.2 lukem } 1515 1.83.2.2 lukem 1516 1.83.2.2 lukem /* 1517 1.83.2.2 lukem * Get an incoming message as initiator. 1518 1.83.2.2 lukem * 1519 1.83.2.2 lukem * The SCSI bus must already be in MESSAGE_IN_PHASE and there is a 1520 1.83.2.2 lukem * byte in the FIFO 1521 1.83.2.2 lukem */ 1522 1.83.2.2 lukem void 1523 1.83.2.2 lukem ncr53c9x_msgin(sc) 1524 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1525 1.83.2.2 lukem { 1526 1.83.2.2 lukem 1527 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_msgin(curmsglen:%ld)] ", (long)sc->sc_imlen)); 1528 1.83.2.2 lukem 1529 1.83.2.2 lukem if (sc->sc_imlen == 0) { 1530 1.83.2.2 lukem printf("%s: msgin: no msg byte available\n", 1531 1.83.2.2 lukem sc->sc_dev.dv_xname); 1532 1.83.2.2 lukem return; 1533 1.83.2.2 lukem } 1534 1.83.2.2 lukem 1535 1.83.2.2 lukem /* 1536 1.83.2.2 lukem * Prepare for a new message. A message should (according 1537 1.83.2.2 lukem * to the SCSI standard) be transmitted in one single 1538 1.83.2.2 lukem * MESSAGE_IN_PHASE. If we have been in some other phase, 1539 1.83.2.2 lukem * then this is a new message. 1540 1.83.2.2 lukem */ 1541 1.83.2.2 lukem if (sc->sc_prevphase != MESSAGE_IN_PHASE && 1542 1.83.2.2 lukem sc->sc_state != NCR_RESELECTED) { 1543 1.83.2.2 lukem printf("%s: phase change, dropping message, " 1544 1.83.2.2 lukem "prev %d, state %d\n", 1545 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_prevphase, sc->sc_state); 1546 1.83.2.2 lukem sc->sc_flags &= ~NCR_DROP_MSGI; 1547 1.83.2.2 lukem sc->sc_imlen = 0; 1548 1.83.2.2 lukem } 1549 1.83.2.2 lukem 1550 1.83.2.2 lukem NCR_TRACE(("<msgbyte:0x%02x>", sc->sc_imess[0])); 1551 1.83.2.2 lukem 1552 1.83.2.2 lukem /* 1553 1.83.2.2 lukem * If we're going to reject the message, don't bother storing 1554 1.83.2.2 lukem * the incoming bytes. But still, we need to ACK them. 1555 1.83.2.2 lukem */ 1556 1.83.2.2 lukem if ((sc->sc_flags & NCR_DROP_MSGI) != 0) { 1557 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 1558 1.83.2.2 lukem printf("<dropping msg byte %x>", sc->sc_imess[sc->sc_imlen]); 1559 1.83.2.2 lukem return; 1560 1.83.2.2 lukem } 1561 1.83.2.2 lukem 1562 1.83.2.2 lukem if (sc->sc_imlen >= NCR_MAX_MSG_LEN) { 1563 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_REJECT); 1564 1.83.2.2 lukem sc->sc_flags |= NCR_DROP_MSGI; 1565 1.83.2.2 lukem } else { 1566 1.83.2.2 lukem u_char *pb; 1567 1.83.2.2 lukem int plen; 1568 1.83.2.2 lukem 1569 1.83.2.2 lukem switch (sc->sc_state) { 1570 1.83.2.2 lukem /* 1571 1.83.2.2 lukem * if received message is the first of reselection 1572 1.83.2.2 lukem * then first byte is selid, and then message 1573 1.83.2.2 lukem */ 1574 1.83.2.2 lukem case NCR_RESELECTED: 1575 1.83.2.2 lukem pb = sc->sc_imess + 1; 1576 1.83.2.2 lukem plen = sc->sc_imlen - 1; 1577 1.83.2.2 lukem break; 1578 1.83.2.2 lukem default: 1579 1.83.2.2 lukem pb = sc->sc_imess; 1580 1.83.2.2 lukem plen = sc->sc_imlen; 1581 1.83.2.2 lukem break; 1582 1.83.2.2 lukem } 1583 1.83.2.2 lukem 1584 1.83.2.2 lukem if (__verify_msg_format(pb, plen)) 1585 1.83.2.2 lukem goto gotit; 1586 1.83.2.2 lukem } 1587 1.83.2.2 lukem 1588 1.83.2.2 lukem /* Ack what we have so far */ 1589 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 1590 1.83.2.2 lukem return; 1591 1.83.2.2 lukem 1592 1.83.2.2 lukem gotit: 1593 1.83.2.2 lukem NCR_MSGS(("gotmsg(%x) state %d", sc->sc_imess[0], sc->sc_state)); 1594 1.83.2.2 lukem /* we got complete message, flush the imess, */ 1595 1.83.2.2 lukem /* XXX nobody uses imlen below */ 1596 1.83.2.2 lukem sc->sc_imlen = 0; 1597 1.83.2.2 lukem /* 1598 1.83.2.2 lukem * Now we should have a complete message (1 byte, 2 byte 1599 1.83.2.2 lukem * and moderately long extended messages). We only handle 1600 1.83.2.2 lukem * extended messages which total length is shorter than 1601 1.83.2.2 lukem * NCR_MAX_MSG_LEN. Longer messages will be amputated. 1602 1.83.2.2 lukem */ 1603 1.83.2.2 lukem switch (sc->sc_state) { 1604 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1605 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1606 1.83.2.2 lukem struct ncr53c9x_linfo *li; 1607 1.83.2.2 lukem int lun; 1608 1.83.2.2 lukem 1609 1.83.2.2 lukem case NCR_CONNECTED: 1610 1.83.2.2 lukem ecb = sc->sc_nexus; 1611 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1612 1.83.2.2 lukem 1613 1.83.2.2 lukem switch (sc->sc_imess[0]) { 1614 1.83.2.2 lukem case MSG_CMDCOMPLETE: 1615 1.83.2.2 lukem NCR_MSGS(("cmdcomplete ")); 1616 1.83.2.2 lukem if (sc->sc_dleft < 0) { 1617 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1618 1.83.2.2 lukem printf("got %ld extra bytes\n", 1619 1.83.2.2 lukem -(long)sc->sc_dleft); 1620 1.83.2.2 lukem sc->sc_dleft = 0; 1621 1.83.2.2 lukem } 1622 1.83.2.2 lukem ecb->dleft = (ecb->flags & ECB_TENTATIVE_DONE) ? 1623 1.83.2.2 lukem 0 : sc->sc_dleft; 1624 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) == 0) 1625 1.83.2.2 lukem ecb->xs->resid = ecb->dleft; 1626 1.83.2.2 lukem sc->sc_state = NCR_CMDCOMPLETE; 1627 1.83.2.2 lukem break; 1628 1.83.2.2 lukem 1629 1.83.2.2 lukem case MSG_MESSAGE_REJECT: 1630 1.83.2.2 lukem NCR_MSGS(("msg reject (msgout=%x) ", sc->sc_msgout)); 1631 1.83.2.2 lukem switch (sc->sc_msgout) { 1632 1.83.2.2 lukem case SEND_TAG: 1633 1.83.2.2 lukem /* 1634 1.83.2.2 lukem * Target does not like tagged queuing. 1635 1.83.2.2 lukem * - Flush the command queue 1636 1.83.2.2 lukem * - Disable tagged queuing for the target 1637 1.83.2.2 lukem * - Dequeue ecb from the queued array. 1638 1.83.2.2 lukem */ 1639 1.83.2.2 lukem printf("%s: tagged queuing rejected: " 1640 1.83.2.2 lukem "target %d\n", 1641 1.83.2.2 lukem sc->sc_dev.dv_xname, 1642 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1643 1.83.2.2 lukem 1644 1.83.2.2 lukem NCR_MSGS(("(rejected sent tag)")); 1645 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 1646 1.83.2.2 lukem DELAY(1); 1647 1.83.2.2 lukem ti->flags &= ~T_TAG; 1648 1.83.2.2 lukem lun = ecb->xs->xs_periph->periph_lun; 1649 1.83.2.2 lukem li = TINFO_LUN(ti, lun); 1650 1.83.2.2 lukem if (ecb->tag[0] && 1651 1.83.2.2 lukem li->queued[ecb->tag[1]] != NULL) { 1652 1.83.2.2 lukem li->queued[ecb->tag[1]] = NULL; 1653 1.83.2.2 lukem li->used--; 1654 1.83.2.2 lukem } 1655 1.83.2.2 lukem ecb->tag[0] = ecb->tag[1] = 0; 1656 1.83.2.2 lukem li->untagged = ecb; 1657 1.83.2.2 lukem li->busy = 1; 1658 1.83.2.2 lukem break; 1659 1.83.2.2 lukem 1660 1.83.2.2 lukem case SEND_SDTR: 1661 1.83.2.2 lukem printf("%s: sync transfer rejected: " 1662 1.83.2.2 lukem "target %d\n", 1663 1.83.2.2 lukem sc->sc_dev.dv_xname, 1664 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1665 1.83.2.2 lukem 1666 1.83.2.2 lukem sc->sc_flags &= ~NCR_SYNCHNEGO; 1667 1.83.2.2 lukem ti->flags &= ~(T_NEGOTIATE | T_SYNCMODE); 1668 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1669 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, 1670 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1671 1.83.2.2 lukem break; 1672 1.83.2.2 lukem 1673 1.83.2.2 lukem case SEND_WDTR: 1674 1.83.2.2 lukem printf("%s: wide transfer rejected: " 1675 1.83.2.2 lukem "target %d\n", 1676 1.83.2.2 lukem sc->sc_dev.dv_xname, 1677 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1678 1.83.2.2 lukem ti->flags &= ~T_WIDE; 1679 1.83.2.2 lukem ti->width = 0; 1680 1.83.2.2 lukem break; 1681 1.83.2.2 lukem 1682 1.83.2.2 lukem case SEND_INIT_DET_ERR: 1683 1.83.2.2 lukem goto abort; 1684 1.83.2.2 lukem } 1685 1.83.2.2 lukem break; 1686 1.83.2.2 lukem 1687 1.83.2.2 lukem case MSG_NOOP: 1688 1.83.2.2 lukem NCR_MSGS(("noop ")); 1689 1.83.2.2 lukem break; 1690 1.83.2.2 lukem 1691 1.83.2.2 lukem case MSG_HEAD_OF_Q_TAG: 1692 1.83.2.2 lukem case MSG_SIMPLE_Q_TAG: 1693 1.83.2.2 lukem case MSG_ORDERED_Q_TAG: 1694 1.83.2.2 lukem NCR_MSGS(("TAG %x:%x", 1695 1.83.2.2 lukem sc->sc_imess[0], sc->sc_imess[1])); 1696 1.83.2.2 lukem break; 1697 1.83.2.2 lukem 1698 1.83.2.2 lukem case MSG_DISCONNECT: 1699 1.83.2.2 lukem NCR_MSGS(("disconnect ")); 1700 1.83.2.2 lukem ti->dconns++; 1701 1.83.2.2 lukem sc->sc_state = NCR_DISCONNECT; 1702 1.83.2.2 lukem 1703 1.83.2.2 lukem /* 1704 1.83.2.2 lukem * Mark the fact that all bytes have moved. The 1705 1.83.2.2 lukem * target may not bother to do a SAVE POINTERS 1706 1.83.2.2 lukem * at this stage. This flag will set the residual 1707 1.83.2.2 lukem * count to zero on MSG COMPLETE. 1708 1.83.2.2 lukem */ 1709 1.83.2.2 lukem if (sc->sc_dleft == 0) 1710 1.83.2.2 lukem ecb->flags |= ECB_TENTATIVE_DONE; 1711 1.83.2.2 lukem 1712 1.83.2.2 lukem break; 1713 1.83.2.2 lukem 1714 1.83.2.2 lukem case MSG_SAVEDATAPOINTER: 1715 1.83.2.2 lukem NCR_MSGS(("save datapointer ")); 1716 1.83.2.2 lukem ecb->daddr = sc->sc_dp; 1717 1.83.2.2 lukem ecb->dleft = sc->sc_dleft; 1718 1.83.2.2 lukem break; 1719 1.83.2.2 lukem 1720 1.83.2.2 lukem case MSG_RESTOREPOINTERS: 1721 1.83.2.2 lukem NCR_MSGS(("restore datapointer ")); 1722 1.83.2.2 lukem sc->sc_dp = ecb->daddr; 1723 1.83.2.2 lukem sc->sc_dleft = ecb->dleft; 1724 1.83.2.2 lukem break; 1725 1.83.2.2 lukem 1726 1.83.2.2 lukem case MSG_EXTENDED: 1727 1.83.2.2 lukem NCR_MSGS(("extended(%x) ", sc->sc_imess[2])); 1728 1.83.2.2 lukem switch (sc->sc_imess[2]) { 1729 1.83.2.2 lukem case MSG_EXT_SDTR: 1730 1.83.2.2 lukem NCR_MSGS(("SDTR period %d, offset %d ", 1731 1.83.2.2 lukem sc->sc_imess[3], sc->sc_imess[4])); 1732 1.83.2.2 lukem if (sc->sc_imess[1] != 3) 1733 1.83.2.2 lukem goto reject; 1734 1.83.2.2 lukem ti->period = sc->sc_imess[3]; 1735 1.83.2.2 lukem ti->offset = sc->sc_imess[4]; 1736 1.83.2.2 lukem ti->flags &= ~T_NEGOTIATE; 1737 1.83.2.2 lukem if (sc->sc_minsync == 0 || 1738 1.83.2.2 lukem ti->offset == 0 || 1739 1.83.2.2 lukem ti->period > 124) { 1740 1.83.2.2 lukem #if 0 1741 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1742 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1743 1.83.2.2 lukem printf("async mode\n"); 1744 1.83.2.2 lukem #endif 1745 1.83.2.2 lukem #endif 1746 1.83.2.2 lukem ti->flags &= ~T_SYNCMODE; 1747 1.83.2.2 lukem if ((sc->sc_flags&NCR_SYNCHNEGO) == 0) { 1748 1.83.2.2 lukem /* 1749 1.83.2.2 lukem * target initiated negotiation 1750 1.83.2.2 lukem */ 1751 1.83.2.2 lukem ti->offset = 0; 1752 1.83.2.2 lukem ncr53c9x_sched_msgout( 1753 1.83.2.2 lukem SEND_SDTR); 1754 1.83.2.2 lukem } 1755 1.83.2.2 lukem } else { 1756 1.83.2.2 lukem #if 0 1757 1.83.2.2 lukem int r = 250/ti->period; 1758 1.83.2.2 lukem int s = (100*250)/ti->period - 100*r; 1759 1.83.2.2 lukem #endif 1760 1.83.2.2 lukem int p; 1761 1.83.2.2 lukem 1762 1.83.2.2 lukem p = ncr53c9x_stp2cpb(sc, ti->period); 1763 1.83.2.2 lukem ti->period = ncr53c9x_cpb2stp(sc, p); 1764 1.83.2.2 lukem #if 0 1765 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 1766 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1767 1.83.2.2 lukem printf("max sync rate %d.%02dMB/s\n", 1768 1.83.2.2 lukem r, s); 1769 1.83.2.2 lukem #endif 1770 1.83.2.2 lukem #endif 1771 1.83.2.2 lukem if ((sc->sc_flags&NCR_SYNCHNEGO) == 0) { 1772 1.83.2.2 lukem /* 1773 1.83.2.2 lukem * target initiated negotiation 1774 1.83.2.2 lukem */ 1775 1.83.2.2 lukem if (ti->period < 1776 1.83.2.2 lukem sc->sc_minsync) 1777 1.83.2.2 lukem ti->period = 1778 1.83.2.2 lukem sc->sc_minsync; 1779 1.83.2.2 lukem if (ti->offset > 15) 1780 1.83.2.2 lukem ti->offset = 15; 1781 1.83.2.2 lukem ti->flags &= ~T_SYNCMODE; 1782 1.83.2.2 lukem ncr53c9x_sched_msgout( 1783 1.83.2.2 lukem SEND_SDTR); 1784 1.83.2.2 lukem } else { 1785 1.83.2.2 lukem /* we are sync */ 1786 1.83.2.2 lukem ti->flags |= T_SYNCMODE; 1787 1.83.2.2 lukem } 1788 1.83.2.2 lukem } 1789 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, 1790 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1791 1.83.2.2 lukem sc->sc_flags &= ~NCR_SYNCHNEGO; 1792 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1793 1.83.2.2 lukem break; 1794 1.83.2.2 lukem 1795 1.83.2.2 lukem case MSG_EXT_WDTR: 1796 1.83.2.2 lukem printf("%s: wide mode %d\n", 1797 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_imess[3]); 1798 1.83.2.2 lukem if (sc->sc_imess[3] == 1) { 1799 1.83.2.2 lukem ti->cfg3 |= NCRFASCFG3_EWIDE; 1800 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1801 1.83.2.2 lukem } else 1802 1.83.2.2 lukem ti->width = 0; 1803 1.83.2.2 lukem ti->flags &= ~T_WIDE; 1804 1.83.2.2 lukem break; 1805 1.83.2.2 lukem default: 1806 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1807 1.83.2.2 lukem printf("unrecognized MESSAGE EXTENDED;" 1808 1.83.2.2 lukem " sending REJECT\n"); 1809 1.83.2.2 lukem goto reject; 1810 1.83.2.2 lukem } 1811 1.83.2.2 lukem break; 1812 1.83.2.2 lukem 1813 1.83.2.2 lukem default: 1814 1.83.2.2 lukem NCR_MSGS(("ident ")); 1815 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 1816 1.83.2.2 lukem printf("unrecognized MESSAGE; sending REJECT\n"); 1817 1.83.2.2 lukem reject: 1818 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_REJECT); 1819 1.83.2.2 lukem break; 1820 1.83.2.2 lukem } 1821 1.83.2.2 lukem break; 1822 1.83.2.2 lukem 1823 1.83.2.2 lukem case NCR_IDENTIFIED: 1824 1.83.2.2 lukem /* 1825 1.83.2.2 lukem * IDENTIFY message was received and queue tag is expected now 1826 1.83.2.2 lukem */ 1827 1.83.2.2 lukem if ((sc->sc_imess[0] != MSG_SIMPLE_Q_TAG) || 1828 1.83.2.2 lukem (sc->sc_msgify == 0)) { 1829 1.83.2.2 lukem printf("%s: TAG reselect without IDENTIFY;" 1830 1.83.2.2 lukem " MSG %x;" 1831 1.83.2.2 lukem " sending DEVICE RESET\n", 1832 1.83.2.2 lukem sc->sc_dev.dv_xname, 1833 1.83.2.2 lukem sc->sc_imess[0]); 1834 1.83.2.2 lukem goto reset; 1835 1.83.2.2 lukem } 1836 1.83.2.2 lukem (void) ncr53c9x_reselect(sc, sc->sc_msgify, 1837 1.83.2.2 lukem sc->sc_imess[0], sc->sc_imess[1]); 1838 1.83.2.2 lukem break; 1839 1.83.2.2 lukem 1840 1.83.2.2 lukem case NCR_RESELECTED: 1841 1.83.2.2 lukem if (MSG_ISIDENTIFY(sc->sc_imess[1])) { 1842 1.83.2.2 lukem sc->sc_msgify = sc->sc_imess[1]; 1843 1.83.2.2 lukem } else { 1844 1.83.2.2 lukem printf("%s: reselect without IDENTIFY;" 1845 1.83.2.2 lukem " MSG %x;" 1846 1.83.2.2 lukem " sending DEVICE RESET\n", 1847 1.83.2.2 lukem sc->sc_dev.dv_xname, 1848 1.83.2.2 lukem sc->sc_imess[1]); 1849 1.83.2.2 lukem goto reset; 1850 1.83.2.2 lukem } 1851 1.83.2.2 lukem (void) ncr53c9x_reselect(sc, sc->sc_msgify, 0, 0); 1852 1.83.2.2 lukem break; 1853 1.83.2.2 lukem 1854 1.83.2.2 lukem default: 1855 1.83.2.2 lukem printf("%s: unexpected MESSAGE IN; sending DEVICE RESET\n", 1856 1.83.2.2 lukem sc->sc_dev.dv_xname); 1857 1.83.2.2 lukem reset: 1858 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_DEV_RESET); 1859 1.83.2.2 lukem break; 1860 1.83.2.2 lukem 1861 1.83.2.2 lukem abort: 1862 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 1863 1.83.2.2 lukem break; 1864 1.83.2.2 lukem } 1865 1.83.2.2 lukem 1866 1.83.2.2 lukem /* if we have more messages to send set ATN */ 1867 1.83.2.2 lukem if (sc->sc_msgpriq) 1868 1.83.2.2 lukem NCRCMD(sc, NCRCMD_SETATN); 1869 1.83.2.2 lukem 1870 1.83.2.2 lukem /* Ack last message byte */ 1871 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 1872 1.83.2.2 lukem 1873 1.83.2.2 lukem /* Done, reset message pointer. */ 1874 1.83.2.2 lukem sc->sc_flags &= ~NCR_DROP_MSGI; 1875 1.83.2.2 lukem sc->sc_imlen = 0; 1876 1.83.2.2 lukem } 1877 1.83.2.2 lukem 1878 1.83.2.2 lukem 1879 1.83.2.2 lukem /* 1880 1.83.2.2 lukem * Send the highest priority, scheduled message 1881 1.83.2.2 lukem */ 1882 1.83.2.2 lukem void 1883 1.83.2.2 lukem ncr53c9x_msgout(sc) 1884 1.83.2.2 lukem struct ncr53c9x_softc *sc; 1885 1.83.2.2 lukem { 1886 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 1887 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 1888 1.83.2.2 lukem size_t size; 1889 1.83.2.2 lukem 1890 1.83.2.2 lukem NCR_TRACE(("[ncr53c9x_msgout(priq:%x, prevphase:%x)]", 1891 1.83.2.2 lukem sc->sc_msgpriq, sc->sc_prevphase)); 1892 1.83.2.2 lukem 1893 1.83.2.2 lukem /* 1894 1.83.2.2 lukem * XXX - the NCR_ATN flag is not in sync with the actual ATN 1895 1.83.2.2 lukem * condition on the SCSI bus. The 53c9x chip 1896 1.83.2.2 lukem * automatically turns off ATN before sending the 1897 1.83.2.2 lukem * message byte. (see also the comment below in the 1898 1.83.2.2 lukem * default case when picking out a message to send) 1899 1.83.2.2 lukem */ 1900 1.83.2.2 lukem if (sc->sc_flags & NCR_ATN) { 1901 1.83.2.2 lukem if (sc->sc_prevphase != MESSAGE_OUT_PHASE) { 1902 1.83.2.2 lukem new: 1903 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 1904 1.83.2.2 lukem /* DELAY(1); */ 1905 1.83.2.2 lukem sc->sc_msgoutq = 0; 1906 1.83.2.2 lukem sc->sc_omlen = 0; 1907 1.83.2.2 lukem } 1908 1.83.2.2 lukem } else { 1909 1.83.2.2 lukem if (sc->sc_prevphase == MESSAGE_OUT_PHASE) { 1910 1.83.2.2 lukem ncr53c9x_sched_msgout(sc->sc_msgoutq); 1911 1.83.2.2 lukem goto new; 1912 1.83.2.2 lukem } else { 1913 1.83.2.2 lukem printf("%s at line %d: unexpected MESSAGE OUT phase\n", 1914 1.83.2.2 lukem sc->sc_dev.dv_xname, __LINE__); 1915 1.83.2.2 lukem } 1916 1.83.2.2 lukem } 1917 1.83.2.2 lukem 1918 1.83.2.2 lukem if (sc->sc_omlen == 0) { 1919 1.83.2.2 lukem /* Pick up highest priority message */ 1920 1.83.2.2 lukem sc->sc_msgout = sc->sc_msgpriq & -sc->sc_msgpriq; 1921 1.83.2.2 lukem sc->sc_msgoutq |= sc->sc_msgout; 1922 1.83.2.2 lukem sc->sc_msgpriq &= ~sc->sc_msgout; 1923 1.83.2.2 lukem sc->sc_omlen = 1; /* "Default" message len */ 1924 1.83.2.2 lukem switch (sc->sc_msgout) { 1925 1.83.2.2 lukem case SEND_SDTR: 1926 1.83.2.2 lukem ecb = sc->sc_nexus; 1927 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1928 1.83.2.2 lukem sc->sc_omess[0] = MSG_EXTENDED; 1929 1.83.2.2 lukem sc->sc_omess[1] = MSG_EXT_SDTR_LEN; 1930 1.83.2.2 lukem sc->sc_omess[2] = MSG_EXT_SDTR; 1931 1.83.2.2 lukem sc->sc_omess[3] = ti->period; 1932 1.83.2.2 lukem sc->sc_omess[4] = ti->offset; 1933 1.83.2.2 lukem sc->sc_omlen = 5; 1934 1.83.2.2 lukem if ((sc->sc_flags & NCR_SYNCHNEGO) == 0) { 1935 1.83.2.2 lukem ti->flags |= T_SYNCMODE; 1936 1.83.2.2 lukem ncr53c9x_setsync(sc, ti); 1937 1.83.2.2 lukem } 1938 1.83.2.2 lukem break; 1939 1.83.2.2 lukem case SEND_WDTR: 1940 1.83.2.2 lukem ecb = sc->sc_nexus; 1941 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1942 1.83.2.2 lukem sc->sc_omess[0] = MSG_EXTENDED; 1943 1.83.2.2 lukem sc->sc_omess[1] = MSG_EXT_WDTR_LEN; 1944 1.83.2.2 lukem sc->sc_omess[2] = MSG_EXT_WDTR; 1945 1.83.2.2 lukem sc->sc_omess[3] = ti->width; 1946 1.83.2.2 lukem sc->sc_omlen = 4; 1947 1.83.2.2 lukem break; 1948 1.83.2.2 lukem case SEND_IDENTIFY: 1949 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED) { 1950 1.83.2.2 lukem printf("%s at line %d: no nexus\n", 1951 1.83.2.2 lukem sc->sc_dev.dv_xname, __LINE__); 1952 1.83.2.2 lukem } 1953 1.83.2.2 lukem ecb = sc->sc_nexus; 1954 1.83.2.2 lukem sc->sc_omess[0] = 1955 1.83.2.2 lukem MSG_IDENTIFY(ecb->xs->xs_periph->periph_lun, 0); 1956 1.83.2.2 lukem break; 1957 1.83.2.2 lukem case SEND_TAG: 1958 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED) { 1959 1.83.2.2 lukem printf("%s at line %d: no nexus\n", 1960 1.83.2.2 lukem sc->sc_dev.dv_xname, __LINE__); 1961 1.83.2.2 lukem } 1962 1.83.2.2 lukem ecb = sc->sc_nexus; 1963 1.83.2.2 lukem sc->sc_omess[0] = ecb->tag[0]; 1964 1.83.2.2 lukem sc->sc_omess[1] = ecb->tag[1]; 1965 1.83.2.2 lukem sc->sc_omlen = 2; 1966 1.83.2.2 lukem break; 1967 1.83.2.2 lukem case SEND_DEV_RESET: 1968 1.83.2.2 lukem sc->sc_flags |= NCR_ABORTING; 1969 1.83.2.2 lukem sc->sc_omess[0] = MSG_BUS_DEV_RESET; 1970 1.83.2.2 lukem ecb = sc->sc_nexus; 1971 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 1972 1.83.2.2 lukem ti->flags &= ~T_SYNCMODE; 1973 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, 1974 1.83.2.2 lukem ecb->xs->xs_periph->periph_target); 1975 1.83.2.2 lukem if ((ti->flags & T_SYNCHOFF) == 0) 1976 1.83.2.2 lukem /* We can re-start sync negotiation */ 1977 1.83.2.2 lukem ti->flags |= T_NEGOTIATE; 1978 1.83.2.2 lukem break; 1979 1.83.2.2 lukem case SEND_PARITY_ERROR: 1980 1.83.2.2 lukem sc->sc_omess[0] = MSG_PARITY_ERROR; 1981 1.83.2.2 lukem break; 1982 1.83.2.2 lukem case SEND_ABORT: 1983 1.83.2.2 lukem sc->sc_flags |= NCR_ABORTING; 1984 1.83.2.2 lukem sc->sc_omess[0] = MSG_ABORT; 1985 1.83.2.2 lukem break; 1986 1.83.2.2 lukem case SEND_INIT_DET_ERR: 1987 1.83.2.2 lukem sc->sc_omess[0] = MSG_INITIATOR_DET_ERR; 1988 1.83.2.2 lukem break; 1989 1.83.2.2 lukem case SEND_REJECT: 1990 1.83.2.2 lukem sc->sc_omess[0] = MSG_MESSAGE_REJECT; 1991 1.83.2.2 lukem break; 1992 1.83.2.2 lukem default: 1993 1.83.2.2 lukem /* 1994 1.83.2.2 lukem * We normally do not get here, since the chip 1995 1.83.2.2 lukem * automatically turns off ATN before the last 1996 1.83.2.2 lukem * byte of a message is sent to the target. 1997 1.83.2.2 lukem * However, if the target rejects our (multi-byte) 1998 1.83.2.2 lukem * message early by switching to MSG IN phase 1999 1.83.2.2 lukem * ATN remains on, so the target may return to 2000 1.83.2.2 lukem * MSG OUT phase. If there are no scheduled messages 2001 1.83.2.2 lukem * left we send a NO-OP. 2002 1.83.2.2 lukem * 2003 1.83.2.2 lukem * XXX - Note that this leaves no useful purpose for 2004 1.83.2.2 lukem * the NCR_ATN flag. 2005 1.83.2.2 lukem */ 2006 1.83.2.2 lukem sc->sc_flags &= ~NCR_ATN; 2007 1.83.2.2 lukem sc->sc_omess[0] = MSG_NOOP; 2008 1.83.2.2 lukem break; 2009 1.83.2.2 lukem } 2010 1.83.2.2 lukem sc->sc_omp = sc->sc_omess; 2011 1.83.2.2 lukem } 2012 1.83.2.2 lukem 2013 1.83.2.2 lukem #ifdef DEBUG 2014 1.83.2.2 lukem { 2015 1.83.2.2 lukem int i; 2016 1.83.2.2 lukem 2017 1.83.2.2 lukem NCR_MISC(("<msgout:")); 2018 1.83.2.2 lukem for (i = 0; i < sc->sc_omlen; i++) 2019 1.83.2.2 lukem NCR_MISC((" %02x", sc->sc_omess[i])); 2020 1.83.2.2 lukem NCR_MISC(("> ")); 2021 1.83.2.2 lukem } 2022 1.83.2.2 lukem #endif 2023 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_FAS366) { 2024 1.83.2.2 lukem /* 2025 1.83.2.2 lukem * XXX fifo size 2026 1.83.2.2 lukem */ 2027 1.83.2.2 lukem ncr53c9x_flushfifo(sc); 2028 1.83.2.2 lukem ncr53c9x_wrfifo(sc, sc->sc_omp, sc->sc_omlen); 2029 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS); 2030 1.83.2.2 lukem } else { 2031 1.83.2.2 lukem /* (re)send the message */ 2032 1.83.2.2 lukem size = min(sc->sc_omlen, sc->sc_maxxfer); 2033 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_omp, &sc->sc_omlen, 0, &size); 2034 1.83.2.2 lukem /* Program the SCSI counter */ 2035 1.83.2.2 lukem NCR_SET_COUNT(sc, size); 2036 1.83.2.2 lukem 2037 1.83.2.2 lukem /* Load the count in and start the message-out transfer */ 2038 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 2039 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS|NCRCMD_DMA); 2040 1.83.2.2 lukem NCRDMA_GO(sc); 2041 1.83.2.2 lukem } 2042 1.83.2.2 lukem } 2043 1.83.2.2 lukem 2044 1.83.2.2 lukem /* 2045 1.83.2.2 lukem * This is the most critical part of the driver, and has to know 2046 1.83.2.2 lukem * how to deal with *all* error conditions and phases from the SCSI 2047 1.83.2.2 lukem * bus. If there are no errors and the DMA was active, then call the 2048 1.83.2.2 lukem * DMA pseudo-interrupt handler. If this returns 1, then that was it 2049 1.83.2.2 lukem * and we can return from here without further processing. 2050 1.83.2.2 lukem * 2051 1.83.2.2 lukem * Most of this needs verifying. 2052 1.83.2.2 lukem */ 2053 1.83.2.2 lukem int 2054 1.83.2.2 lukem ncr53c9x_intr(arg) 2055 1.83.2.2 lukem void *arg; 2056 1.83.2.2 lukem { 2057 1.83.2.2 lukem struct ncr53c9x_softc *sc = arg; 2058 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 2059 1.83.2.2 lukem struct scsipi_periph *periph; 2060 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 2061 1.83.2.2 lukem size_t size; 2062 1.83.2.2 lukem int nfifo; 2063 1.83.2.2 lukem 2064 1.83.2.2 lukem NCR_MISC(("[ncr53c9x_intr: state %d]", sc->sc_state)); 2065 1.83.2.2 lukem 2066 1.83.2.2 lukem if (!NCRDMA_ISINTR(sc)) 2067 1.83.2.2 lukem return (0); 2068 1.83.2.2 lukem 2069 1.83.2.2 lukem again: 2070 1.83.2.2 lukem /* and what do the registers say... */ 2071 1.83.2.2 lukem ncr53c9x_readregs(sc); 2072 1.83.2.2 lukem 2073 1.83.2.2 lukem sc->sc_intrcnt.ev_count++; 2074 1.83.2.2 lukem 2075 1.83.2.2 lukem /* 2076 1.83.2.2 lukem * At the moment, only a SCSI Bus Reset or Illegal 2077 1.83.2.2 lukem * Command are classed as errors. A disconnect is a 2078 1.83.2.2 lukem * valid condition, and we let the code check is the 2079 1.83.2.2 lukem * "NCR_BUSFREE_OK" flag was set before declaring it 2080 1.83.2.2 lukem * and error. 2081 1.83.2.2 lukem * 2082 1.83.2.2 lukem * Also, the status register tells us about "Gross 2083 1.83.2.2 lukem * Errors" and "Parity errors". Only the Gross Error 2084 1.83.2.2 lukem * is really bad, and the parity errors are dealt 2085 1.83.2.2 lukem * with later 2086 1.83.2.2 lukem * 2087 1.83.2.2 lukem * TODO 2088 1.83.2.2 lukem * If there are too many parity error, go to slow 2089 1.83.2.2 lukem * cable mode ? 2090 1.83.2.2 lukem */ 2091 1.83.2.2 lukem 2092 1.83.2.2 lukem /* SCSI Reset */ 2093 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_SBR) != 0) { 2094 1.83.2.2 lukem if ((NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) != 0) { 2095 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2096 1.83.2.2 lukem DELAY(1); 2097 1.83.2.2 lukem } 2098 1.83.2.2 lukem if (sc->sc_state != NCR_SBR) { 2099 1.83.2.2 lukem printf("%s: SCSI bus reset\n", sc->sc_dev.dv_xname); 2100 1.83.2.2 lukem ncr53c9x_init(sc, 0); /* Restart everything */ 2101 1.83.2.2 lukem return (1); 2102 1.83.2.2 lukem } 2103 1.83.2.2 lukem #if 0 2104 1.83.2.2 lukem /*XXX*/ printf("<expected bus reset: " 2105 1.83.2.2 lukem "[intr %x, stat %x, step %d]>\n", 2106 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep); 2107 1.83.2.2 lukem #endif 2108 1.83.2.2 lukem if (sc->sc_nexus != NULL) 2109 1.83.2.2 lukem panic("%s: nexus in reset state", 2110 1.83.2.2 lukem sc->sc_dev.dv_xname); 2111 1.83.2.2 lukem goto sched; 2112 1.83.2.2 lukem } 2113 1.83.2.2 lukem 2114 1.83.2.2 lukem ecb = sc->sc_nexus; 2115 1.83.2.2 lukem 2116 1.83.2.2 lukem #define NCRINTR_ERR (NCRINTR_SBR|NCRINTR_ILL) 2117 1.83.2.2 lukem if (sc->sc_espintr & NCRINTR_ERR || 2118 1.83.2.2 lukem sc->sc_espstat & NCRSTAT_GE) { 2119 1.83.2.2 lukem 2120 1.83.2.2 lukem if ((sc->sc_espstat & NCRSTAT_GE) != 0) { 2121 1.83.2.2 lukem /* Gross Error; no target ? */ 2122 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2123 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2124 1.83.2.2 lukem DELAY(1); 2125 1.83.2.2 lukem } 2126 1.83.2.2 lukem if (sc->sc_state == NCR_CONNECTED || 2127 1.83.2.2 lukem sc->sc_state == NCR_SELECTING) { 2128 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 2129 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 2130 1.83.2.2 lukem } 2131 1.83.2.2 lukem return (1); 2132 1.83.2.2 lukem } 2133 1.83.2.2 lukem 2134 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_ILL) != 0) { 2135 1.83.2.2 lukem if ((sc->sc_flags & NCR_EXPECT_ILLCMD) != 0) { 2136 1.83.2.2 lukem /* 2137 1.83.2.2 lukem * Eat away "Illegal command" interrupt 2138 1.83.2.2 lukem * on a ESP100 caused by a re-selection 2139 1.83.2.2 lukem * while we were trying to select 2140 1.83.2.2 lukem * another target. 2141 1.83.2.2 lukem */ 2142 1.83.2.2 lukem #ifdef DEBUG 2143 1.83.2.2 lukem printf("%s: ESP100 work-around activated\n", 2144 1.83.2.2 lukem sc->sc_dev.dv_xname); 2145 1.83.2.2 lukem #endif 2146 1.83.2.2 lukem sc->sc_flags &= ~NCR_EXPECT_ILLCMD; 2147 1.83.2.2 lukem return (1); 2148 1.83.2.2 lukem } 2149 1.83.2.2 lukem /* illegal command, out of sync ? */ 2150 1.83.2.2 lukem printf("%s: illegal command: 0x%x " 2151 1.83.2.2 lukem "(state %d, phase %x, prevphase %x)\n", 2152 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_lastcmd, 2153 1.83.2.2 lukem sc->sc_state, sc->sc_phase, sc->sc_prevphase); 2154 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2155 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2156 1.83.2.2 lukem DELAY(1); 2157 1.83.2.2 lukem } 2158 1.83.2.2 lukem ncr53c9x_init(sc, 1); /* Restart everything */ 2159 1.83.2.2 lukem return (1); 2160 1.83.2.2 lukem } 2161 1.83.2.2 lukem } 2162 1.83.2.2 lukem sc->sc_flags &= ~NCR_EXPECT_ILLCMD; 2163 1.83.2.2 lukem 2164 1.83.2.2 lukem /* 2165 1.83.2.2 lukem * Call if DMA is active. 2166 1.83.2.2 lukem * 2167 1.83.2.2 lukem * If DMA_INTR returns true, then maybe go 'round the loop 2168 1.83.2.2 lukem * again in case there is no more DMA queued, but a phase 2169 1.83.2.2 lukem * change is expected. 2170 1.83.2.2 lukem */ 2171 1.83.2.2 lukem if (NCRDMA_ISACTIVE(sc)) { 2172 1.83.2.2 lukem int r = NCRDMA_INTR(sc); 2173 1.83.2.2 lukem if (r == -1) { 2174 1.83.2.2 lukem printf("%s: DMA error; resetting\n", 2175 1.83.2.2 lukem sc->sc_dev.dv_xname); 2176 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2177 1.83.2.2 lukem } 2178 1.83.2.2 lukem /* If DMA active here, then go back to work... */ 2179 1.83.2.2 lukem if (NCRDMA_ISACTIVE(sc)) 2180 1.83.2.2 lukem return (1); 2181 1.83.2.2 lukem 2182 1.83.2.2 lukem if ((sc->sc_espstat & NCRSTAT_TC) == 0) { 2183 1.83.2.2 lukem /* 2184 1.83.2.2 lukem * DMA not completed. If we can not find a 2185 1.83.2.2 lukem * acceptable explanation, print a diagnostic. 2186 1.83.2.2 lukem */ 2187 1.83.2.2 lukem if (sc->sc_state == NCR_SELECTING) 2188 1.83.2.2 lukem /* 2189 1.83.2.2 lukem * This can happen if we are reselected 2190 1.83.2.2 lukem * while using DMA to select a target. 2191 1.83.2.2 lukem */ 2192 1.83.2.2 lukem /*void*/; 2193 1.83.2.2 lukem else if (sc->sc_prevphase == MESSAGE_OUT_PHASE) { 2194 1.83.2.2 lukem /* 2195 1.83.2.2 lukem * Our (multi-byte) message (eg SDTR) was 2196 1.83.2.2 lukem * interrupted by the target to send 2197 1.83.2.2 lukem * a MSG REJECT. 2198 1.83.2.2 lukem * Print diagnostic if current phase 2199 1.83.2.2 lukem * is not MESSAGE IN. 2200 1.83.2.2 lukem */ 2201 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) 2202 1.83.2.2 lukem printf("%s: !TC on MSG OUT" 2203 1.83.2.2 lukem " [intr %x, stat %x, step %d]" 2204 1.83.2.2 lukem " prevphase %x, resid %lx\n", 2205 1.83.2.2 lukem sc->sc_dev.dv_xname, 2206 1.83.2.2 lukem sc->sc_espintr, 2207 1.83.2.2 lukem sc->sc_espstat, 2208 1.83.2.2 lukem sc->sc_espstep, 2209 1.83.2.2 lukem sc->sc_prevphase, 2210 1.83.2.2 lukem (u_long)sc->sc_omlen); 2211 1.83.2.2 lukem } else if (sc->sc_dleft == 0) { 2212 1.83.2.2 lukem /* 2213 1.83.2.2 lukem * The DMA operation was started for 2214 1.83.2.2 lukem * a DATA transfer. Print a diagnostic 2215 1.83.2.2 lukem * if the DMA counter and TC bit 2216 1.83.2.2 lukem * appear to be out of sync. 2217 1.83.2.2 lukem */ 2218 1.83.2.2 lukem printf("%s: !TC on DATA XFER" 2219 1.83.2.2 lukem " [intr %x, stat %x, step %d]" 2220 1.83.2.2 lukem " prevphase %x, resid %x\n", 2221 1.83.2.2 lukem sc->sc_dev.dv_xname, 2222 1.83.2.2 lukem sc->sc_espintr, 2223 1.83.2.2 lukem sc->sc_espstat, 2224 1.83.2.2 lukem sc->sc_espstep, 2225 1.83.2.2 lukem sc->sc_prevphase, 2226 1.83.2.2 lukem ecb ? ecb->dleft : -1); 2227 1.83.2.2 lukem } 2228 1.83.2.2 lukem } 2229 1.83.2.2 lukem } 2230 1.83.2.2 lukem 2231 1.83.2.2 lukem /* 2232 1.83.2.2 lukem * Check for less serious errors. 2233 1.83.2.2 lukem */ 2234 1.83.2.2 lukem if ((sc->sc_espstat & NCRSTAT_PE) != 0) { 2235 1.83.2.2 lukem printf("%s: SCSI bus parity error\n", sc->sc_dev.dv_xname); 2236 1.83.2.2 lukem if (sc->sc_prevphase == MESSAGE_IN_PHASE) 2237 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_PARITY_ERROR); 2238 1.83.2.2 lukem else 2239 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_INIT_DET_ERR); 2240 1.83.2.2 lukem } 2241 1.83.2.2 lukem 2242 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_DIS) != 0) { 2243 1.83.2.2 lukem sc->sc_msgify = 0; 2244 1.83.2.2 lukem NCR_MISC(("<DISC [intr %x, stat %x, step %d]>", 2245 1.83.2.2 lukem sc->sc_espintr,sc->sc_espstat,sc->sc_espstep)); 2246 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2247 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2248 1.83.2.2 lukem /* DELAY(1); */ 2249 1.83.2.2 lukem } 2250 1.83.2.2 lukem /* 2251 1.83.2.2 lukem * This command must (apparently) be issued within 2252 1.83.2.2 lukem * 250mS of a disconnect. So here you are... 2253 1.83.2.2 lukem */ 2254 1.83.2.2 lukem NCRCMD(sc, NCRCMD_ENSEL); 2255 1.83.2.2 lukem 2256 1.83.2.2 lukem switch (sc->sc_state) { 2257 1.83.2.2 lukem case NCR_RESELECTED: 2258 1.83.2.2 lukem goto sched; 2259 1.83.2.2 lukem 2260 1.83.2.2 lukem case NCR_SELECTING: 2261 1.83.2.2 lukem { 2262 1.83.2.2 lukem struct ncr53c9x_linfo *li; 2263 1.83.2.2 lukem 2264 1.83.2.2 lukem ecb->xs->error = XS_SELTIMEOUT; 2265 1.83.2.2 lukem 2266 1.83.2.2 lukem /* Selection timeout -- discard all LUNs if empty */ 2267 1.83.2.2 lukem periph = ecb->xs->xs_periph; 2268 1.83.2.2 lukem ti = &sc->sc_tinfo[periph->periph_target]; 2269 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2270 1.83.2.2 lukem while (li != NULL) { 2271 1.83.2.2 lukem if (li->untagged == NULL && li->used == 0) { 2272 1.83.2.2 lukem if (li->lun < NCR_NLUN) 2273 1.83.2.2 lukem ti->lun[li->lun] = NULL; 2274 1.83.2.2 lukem LIST_REMOVE(li, link); 2275 1.83.2.2 lukem free(li, M_DEVBUF); 2276 1.83.2.2 lukem /* 2277 1.83.2.2 lukem * Restart the search at the beginning 2278 1.83.2.2 lukem */ 2279 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2280 1.83.2.2 lukem continue; 2281 1.83.2.2 lukem } 2282 1.83.2.2 lukem li = LIST_NEXT(li, link); 2283 1.83.2.2 lukem } 2284 1.83.2.2 lukem goto finish; 2285 1.83.2.2 lukem } 2286 1.83.2.2 lukem case NCR_CONNECTED: 2287 1.83.2.2 lukem if ((sc->sc_flags & NCR_SYNCHNEGO) != 0) { 2288 1.83.2.2 lukem #ifdef NCR53C9X_DEBUG 2289 1.83.2.2 lukem if (ecb != NULL) 2290 1.83.2.2 lukem scsipi_printaddr(ecb->xs->xs_periph); 2291 1.83.2.2 lukem printf("sync nego not completed!\n"); 2292 1.83.2.2 lukem #endif 2293 1.83.2.2 lukem ti = &sc->sc_tinfo[ecb->xs->xs_periph->periph_target]; 2294 1.83.2.2 lukem sc->sc_flags &= ~NCR_SYNCHNEGO; 2295 1.83.2.2 lukem ti->flags &= ~(T_NEGOTIATE | T_SYNCMODE); 2296 1.83.2.2 lukem } 2297 1.83.2.2 lukem 2298 1.83.2.2 lukem /* it may be OK to disconnect */ 2299 1.83.2.2 lukem if ((sc->sc_flags & NCR_ABORTING) == 0) { 2300 1.83.2.2 lukem /* 2301 1.83.2.2 lukem * Section 5.1.1 of the SCSI 2 spec 2302 1.83.2.2 lukem * suggests issuing a REQUEST SENSE 2303 1.83.2.2 lukem * following an unexpected disconnect. 2304 1.83.2.2 lukem * Some devices go into a contingent 2305 1.83.2.2 lukem * allegiance condition when 2306 1.83.2.2 lukem * disconnecting, and this is necessary 2307 1.83.2.2 lukem * to clean up their state. 2308 1.83.2.2 lukem */ 2309 1.83.2.2 lukem printf("%s: unexpected disconnect; ", 2310 1.83.2.2 lukem sc->sc_dev.dv_xname); 2311 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) != 0) { 2312 1.83.2.2 lukem printf("resetting\n"); 2313 1.83.2.2 lukem goto reset; 2314 1.83.2.2 lukem } 2315 1.83.2.2 lukem printf("sending REQUEST SENSE\n"); 2316 1.83.2.2 lukem callout_stop(&ecb->xs->xs_callout); 2317 1.83.2.2 lukem ncr53c9x_sense(sc, ecb); 2318 1.83.2.2 lukem goto out; 2319 1.83.2.2 lukem } 2320 1.83.2.2 lukem 2321 1.83.2.2 lukem ecb->xs->error = XS_TIMEOUT; 2322 1.83.2.2 lukem goto finish; 2323 1.83.2.2 lukem 2324 1.83.2.2 lukem case NCR_DISCONNECT: 2325 1.83.2.2 lukem sc->sc_nexus = NULL; 2326 1.83.2.2 lukem goto sched; 2327 1.83.2.2 lukem 2328 1.83.2.2 lukem case NCR_CMDCOMPLETE: 2329 1.83.2.2 lukem goto finish; 2330 1.83.2.2 lukem } 2331 1.83.2.2 lukem } 2332 1.83.2.2 lukem 2333 1.83.2.2 lukem switch (sc->sc_state) { 2334 1.83.2.2 lukem 2335 1.83.2.2 lukem case NCR_SBR: 2336 1.83.2.2 lukem printf("%s: waiting for SCSI Bus Reset to happen\n", 2337 1.83.2.2 lukem sc->sc_dev.dv_xname); 2338 1.83.2.2 lukem return (1); 2339 1.83.2.2 lukem 2340 1.83.2.2 lukem case NCR_RESELECTED: 2341 1.83.2.2 lukem /* 2342 1.83.2.2 lukem * we must be continuing a message ? 2343 1.83.2.2 lukem */ 2344 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) { 2345 1.83.2.2 lukem printf("%s: target didn't identify\n", 2346 1.83.2.2 lukem sc->sc_dev.dv_xname); 2347 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2348 1.83.2.2 lukem return (1); 2349 1.83.2.2 lukem } 2350 1.83.2.2 lukem printf("<<RESELECT CONT'd>>"); 2351 1.83.2.2 lukem #if XXXX 2352 1.83.2.2 lukem ncr53c9x_msgin(sc); 2353 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED) { 2354 1.83.2.2 lukem /* IDENTIFY fail?! */ 2355 1.83.2.2 lukem printf("%s: identify failed\n", 2356 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_state); 2357 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2358 1.83.2.2 lukem return (1); 2359 1.83.2.2 lukem } 2360 1.83.2.2 lukem #endif 2361 1.83.2.2 lukem break; 2362 1.83.2.2 lukem 2363 1.83.2.2 lukem case NCR_IDENTIFIED: 2364 1.83.2.2 lukem ecb = sc->sc_nexus; 2365 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) { 2366 1.83.2.2 lukem int i = (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF); 2367 1.83.2.2 lukem /* 2368 1.83.2.2 lukem * Things are seriously fucked up. 2369 1.83.2.2 lukem * Pull the brakes, i.e. reset 2370 1.83.2.2 lukem */ 2371 1.83.2.2 lukem printf("%s: target didn't send tag: %d bytes in fifo\n", 2372 1.83.2.2 lukem sc->sc_dev.dv_xname, i); 2373 1.83.2.2 lukem /* Drain and display fifo */ 2374 1.83.2.2 lukem while (i-- > 0) 2375 1.83.2.2 lukem printf("[%d] ", NCR_READ_REG(sc, NCR_FIFO)); 2376 1.83.2.2 lukem 2377 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2378 1.83.2.2 lukem return (1); 2379 1.83.2.2 lukem } else 2380 1.83.2.2 lukem goto msgin; 2381 1.83.2.2 lukem 2382 1.83.2.2 lukem break; 2383 1.83.2.2 lukem 2384 1.83.2.2 lukem case NCR_IDLE: 2385 1.83.2.2 lukem case NCR_SELECTING: 2386 1.83.2.2 lukem ecb = sc->sc_nexus; 2387 1.83.2.2 lukem if (sc->sc_espintr & NCRINTR_RESEL) { 2388 1.83.2.2 lukem sc->sc_msgpriq = sc->sc_msgout = sc->sc_msgoutq = 0; 2389 1.83.2.2 lukem sc->sc_flags = 0; 2390 1.83.2.2 lukem /* 2391 1.83.2.2 lukem * If we're trying to select a 2392 1.83.2.2 lukem * target ourselves, push our command 2393 1.83.2.2 lukem * back into the ready list. 2394 1.83.2.2 lukem */ 2395 1.83.2.2 lukem if (sc->sc_state == NCR_SELECTING) { 2396 1.83.2.2 lukem NCR_MISC(("backoff selector ")); 2397 1.83.2.2 lukem callout_stop(&ecb->xs->xs_callout); 2398 1.83.2.2 lukem ncr53c9x_dequeue(sc, ecb); 2399 1.83.2.2 lukem TAILQ_INSERT_HEAD(&sc->ready_list, ecb, chain); 2400 1.83.2.2 lukem ecb->flags |= ECB_READY; 2401 1.83.2.2 lukem ecb = sc->sc_nexus = NULL; 2402 1.83.2.2 lukem } 2403 1.83.2.2 lukem sc->sc_state = NCR_RESELECTED; 2404 1.83.2.2 lukem if (sc->sc_phase != MESSAGE_IN_PHASE) { 2405 1.83.2.2 lukem /* 2406 1.83.2.2 lukem * Things are seriously fucked up. 2407 1.83.2.2 lukem * Pull the brakes, i.e. reset 2408 1.83.2.2 lukem */ 2409 1.83.2.2 lukem printf("%s: target didn't identify\n", 2410 1.83.2.2 lukem sc->sc_dev.dv_xname); 2411 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2412 1.83.2.2 lukem return (1); 2413 1.83.2.2 lukem } 2414 1.83.2.2 lukem /* 2415 1.83.2.2 lukem * The C90 only inhibits FIFO writes until 2416 1.83.2.2 lukem * reselection is complete, instead of 2417 1.83.2.2 lukem * waiting until the interrupt status register 2418 1.83.2.2 lukem * has been read. So, if the reselect happens 2419 1.83.2.2 lukem * while we were entering a command bytes (for 2420 1.83.2.2 lukem * another target) some of those bytes can 2421 1.83.2.2 lukem * appear in the FIFO here, after the 2422 1.83.2.2 lukem * interrupt is taken. 2423 1.83.2.2 lukem */ 2424 1.83.2.2 lukem nfifo = ncr53c9x_rdfifo(sc, NCR_RDFIFO_START); 2425 1.83.2.2 lukem 2426 1.83.2.2 lukem if (nfifo < 2 || 2427 1.83.2.2 lukem (nfifo > 2 && sc->sc_rev != NCR_VARIANT_ESP100)) { 2428 1.83.2.2 lukem printf("%s: RESELECT: %d bytes in FIFO! " 2429 1.83.2.2 lukem "[intr %x, stat %x, step %d, " 2430 1.83.2.2 lukem "prevphase %x]\n", 2431 1.83.2.2 lukem sc->sc_dev.dv_xname, 2432 1.83.2.2 lukem nfifo, 2433 1.83.2.2 lukem sc->sc_espintr, 2434 1.83.2.2 lukem sc->sc_espstat, 2435 1.83.2.2 lukem sc->sc_espstep, 2436 1.83.2.2 lukem sc->sc_prevphase); 2437 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2438 1.83.2.2 lukem return (1); 2439 1.83.2.2 lukem } 2440 1.83.2.2 lukem sc->sc_selid = sc->sc_imess[0]; 2441 1.83.2.2 lukem NCR_MISC(("selid=%02x ", sc->sc_selid)); 2442 1.83.2.2 lukem 2443 1.83.2.2 lukem /* Handle identify message */ 2444 1.83.2.2 lukem ncr53c9x_msgin(sc); 2445 1.83.2.2 lukem if (nfifo != 2) { 2446 1.83.2.2 lukem /* 2447 1.83.2.2 lukem * Note: this should not happen 2448 1.83.2.2 lukem * with `dmaselect' on. 2449 1.83.2.2 lukem */ 2450 1.83.2.2 lukem sc->sc_flags |= NCR_EXPECT_ILLCMD; 2451 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2452 1.83.2.2 lukem } else if (sc->sc_features & NCR_F_DMASELECT && 2453 1.83.2.2 lukem sc->sc_rev == NCR_VARIANT_ESP100) { 2454 1.83.2.2 lukem sc->sc_flags |= NCR_EXPECT_ILLCMD; 2455 1.83.2.2 lukem } 2456 1.83.2.2 lukem 2457 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED && 2458 1.83.2.2 lukem sc->sc_state != NCR_IDENTIFIED) { 2459 1.83.2.2 lukem /* IDENTIFY fail?! */ 2460 1.83.2.2 lukem printf("%s: identify failed, " 2461 1.83.2.2 lukem "state %d, intr %02x\n", 2462 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_state, 2463 1.83.2.2 lukem sc->sc_espintr); 2464 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2465 1.83.2.2 lukem return (1); 2466 1.83.2.2 lukem } 2467 1.83.2.2 lukem goto shortcut; /* ie. next phase expected soon */ 2468 1.83.2.2 lukem } 2469 1.83.2.2 lukem 2470 1.83.2.2 lukem #define NCRINTR_DONE (NCRINTR_FC|NCRINTR_BS) 2471 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_DONE) == NCRINTR_DONE) { 2472 1.83.2.2 lukem /* 2473 1.83.2.2 lukem * Arbitration won; examine the `step' register 2474 1.83.2.2 lukem * to determine how far the selection could progress. 2475 1.83.2.2 lukem */ 2476 1.83.2.2 lukem ecb = sc->sc_nexus; 2477 1.83.2.2 lukem if (ecb == NULL) 2478 1.83.2.2 lukem panic("ncr53c9x: no nexus"); 2479 1.83.2.2 lukem 2480 1.83.2.2 lukem periph = ecb->xs->xs_periph; 2481 1.83.2.2 lukem ti = &sc->sc_tinfo[periph->periph_target]; 2482 1.83.2.2 lukem 2483 1.83.2.2 lukem switch (sc->sc_espstep) { 2484 1.83.2.2 lukem case 0: 2485 1.83.2.2 lukem /* 2486 1.83.2.2 lukem * The target did not respond with a 2487 1.83.2.2 lukem * message out phase - probably an old 2488 1.83.2.2 lukem * device that doesn't recognize ATN. 2489 1.83.2.2 lukem * Clear ATN and just continue, the 2490 1.83.2.2 lukem * target should be in the command 2491 1.83.2.2 lukem * phase. 2492 1.83.2.2 lukem * XXXX check for command phase? 2493 1.83.2.2 lukem */ 2494 1.83.2.2 lukem NCRCMD(sc, NCRCMD_RSTATN); 2495 1.83.2.2 lukem break; 2496 1.83.2.2 lukem case 1: 2497 1.83.2.2 lukem if ((ti->flags & T_NEGOTIATE) == 0 && 2498 1.83.2.2 lukem ecb->tag[0] == 0) { 2499 1.83.2.2 lukem printf("%s: step 1 & !NEG\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 (sc->sc_phase != MESSAGE_OUT_PHASE) { 2504 1.83.2.2 lukem printf("%s: !MSGOUT\n", 2505 1.83.2.2 lukem sc->sc_dev.dv_xname); 2506 1.83.2.2 lukem goto reset; 2507 1.83.2.2 lukem } 2508 1.83.2.2 lukem if (ti->flags & T_WIDE) { 2509 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_WDTR); 2510 1.83.2.2 lukem } 2511 1.83.2.2 lukem if (ti->flags & T_NEGOTIATE) { 2512 1.83.2.2 lukem /* Start negotiating */ 2513 1.83.2.2 lukem ti->period = sc->sc_minsync; 2514 1.83.2.2 lukem ti->offset = 15; 2515 1.83.2.2 lukem sc->sc_flags |= NCR_SYNCHNEGO; 2516 1.83.2.2 lukem if (ecb->tag[0]) 2517 1.83.2.2 lukem ncr53c9x_sched_msgout( 2518 1.83.2.2 lukem SEND_TAG|SEND_SDTR); 2519 1.83.2.2 lukem else 2520 1.83.2.2 lukem ncr53c9x_sched_msgout( 2521 1.83.2.2 lukem SEND_SDTR); 2522 1.83.2.2 lukem } else { 2523 1.83.2.2 lukem /* Could not do ATN3 so send TAG */ 2524 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_TAG); 2525 1.83.2.2 lukem } 2526 1.83.2.2 lukem sc->sc_prevphase = MESSAGE_OUT_PHASE; /* XXXX */ 2527 1.83.2.2 lukem break; 2528 1.83.2.2 lukem case 3: 2529 1.83.2.2 lukem /* 2530 1.83.2.2 lukem * Grr, this is supposed to mean 2531 1.83.2.2 lukem * "target left command phase prematurely". 2532 1.83.2.2 lukem * It seems to happen regularly when 2533 1.83.2.2 lukem * sync mode is on. 2534 1.83.2.2 lukem * Look at FIFO to see if command went out. 2535 1.83.2.2 lukem * (Timing problems?) 2536 1.83.2.2 lukem */ 2537 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT) { 2538 1.83.2.2 lukem if (sc->sc_cmdlen == 0) 2539 1.83.2.2 lukem /* Hope for the best.. */ 2540 1.83.2.2 lukem break; 2541 1.83.2.2 lukem } else if ((NCR_READ_REG(sc, NCR_FFLAG) 2542 1.83.2.2 lukem & NCRFIFO_FF) == 0) { 2543 1.83.2.2 lukem /* Hope for the best.. */ 2544 1.83.2.2 lukem break; 2545 1.83.2.2 lukem } 2546 1.83.2.2 lukem printf("(%s:%d:%d): selection failed;" 2547 1.83.2.2 lukem " %d left in FIFO " 2548 1.83.2.2 lukem "[intr %x, stat %x, step %d]\n", 2549 1.83.2.2 lukem sc->sc_dev.dv_xname, 2550 1.83.2.2 lukem periph->periph_target, 2551 1.83.2.2 lukem periph->periph_lun, 2552 1.83.2.2 lukem NCR_READ_REG(sc, NCR_FFLAG) 2553 1.83.2.2 lukem & NCRFIFO_FF, 2554 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, 2555 1.83.2.2 lukem sc->sc_espstep); 2556 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2557 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 2558 1.83.2.2 lukem return (1); 2559 1.83.2.2 lukem case 2: 2560 1.83.2.2 lukem /* Select stuck at Command Phase */ 2561 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2562 1.83.2.2 lukem break; 2563 1.83.2.2 lukem case 4: 2564 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT && 2565 1.83.2.2 lukem sc->sc_cmdlen != 0) 2566 1.83.2.2 lukem printf("(%s:%d:%d): select; " 2567 1.83.2.2 lukem "%lu left in DMA buffer " 2568 1.83.2.2 lukem "[intr %x, stat %x, step %d]\n", 2569 1.83.2.2 lukem sc->sc_dev.dv_xname, 2570 1.83.2.2 lukem periph->periph_target, 2571 1.83.2.2 lukem periph->periph_lun, 2572 1.83.2.2 lukem (u_long)sc->sc_cmdlen, 2573 1.83.2.2 lukem sc->sc_espintr, 2574 1.83.2.2 lukem sc->sc_espstat, 2575 1.83.2.2 lukem sc->sc_espstep); 2576 1.83.2.2 lukem /* So far, everything went fine */ 2577 1.83.2.2 lukem break; 2578 1.83.2.2 lukem } 2579 1.83.2.2 lukem 2580 1.83.2.2 lukem sc->sc_prevphase = INVALID_PHASE; /* ?? */ 2581 1.83.2.2 lukem /* Do an implicit RESTORE POINTERS. */ 2582 1.83.2.2 lukem sc->sc_dp = ecb->daddr; 2583 1.83.2.2 lukem sc->sc_dleft = ecb->dleft; 2584 1.83.2.2 lukem sc->sc_state = NCR_CONNECTED; 2585 1.83.2.2 lukem break; 2586 1.83.2.2 lukem 2587 1.83.2.2 lukem } else { 2588 1.83.2.2 lukem 2589 1.83.2.2 lukem printf("%s: unexpected status after select" 2590 1.83.2.2 lukem ": [intr %x, stat %x, step %x]\n", 2591 1.83.2.2 lukem sc->sc_dev.dv_xname, 2592 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep); 2593 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2594 1.83.2.2 lukem DELAY(1); 2595 1.83.2.2 lukem goto reset; 2596 1.83.2.2 lukem } 2597 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) { 2598 1.83.2.2 lukem printf("%s: stray interrupt\n", sc->sc_dev.dv_xname); 2599 1.83.2.2 lukem return (0); 2600 1.83.2.2 lukem } 2601 1.83.2.2 lukem break; 2602 1.83.2.2 lukem 2603 1.83.2.2 lukem case NCR_CONNECTED: 2604 1.83.2.2 lukem if ((sc->sc_flags & NCR_ICCS) != 0) { 2605 1.83.2.2 lukem /* "Initiate Command Complete Steps" in progress */ 2606 1.83.2.2 lukem u_char msg; 2607 1.83.2.2 lukem 2608 1.83.2.2 lukem sc->sc_flags &= ~NCR_ICCS; 2609 1.83.2.2 lukem 2610 1.83.2.2 lukem if (!(sc->sc_espintr & NCRINTR_DONE)) { 2611 1.83.2.2 lukem printf("%s: ICCS: " 2612 1.83.2.2 lukem ": [intr %x, stat %x, step %x]\n", 2613 1.83.2.2 lukem sc->sc_dev.dv_xname, 2614 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, 2615 1.83.2.2 lukem sc->sc_espstep); 2616 1.83.2.2 lukem } 2617 1.83.2.2 lukem ncr53c9x_rdfifo(sc, NCR_RDFIFO_START); 2618 1.83.2.2 lukem if (sc->sc_imlen < 2) 2619 1.83.2.2 lukem printf("%s: can't get status, only %d bytes\n", 2620 1.83.2.2 lukem sc->sc_dev.dv_xname, (int)sc->sc_imlen); 2621 1.83.2.2 lukem ecb->stat = sc->sc_imess[sc->sc_imlen - 2]; 2622 1.83.2.2 lukem msg = sc->sc_imess[sc->sc_imlen - 1]; 2623 1.83.2.2 lukem NCR_PHASE(("<stat:(%x,%x)>", ecb->stat, msg)); 2624 1.83.2.2 lukem if (msg == MSG_CMDCOMPLETE) { 2625 1.83.2.2 lukem ecb->dleft = (ecb->flags & ECB_TENTATIVE_DONE) 2626 1.83.2.2 lukem ? 0 : sc->sc_dleft; 2627 1.83.2.2 lukem if ((ecb->flags & ECB_SENSE) == 0) 2628 1.83.2.2 lukem ecb->xs->resid = ecb->dleft; 2629 1.83.2.2 lukem sc->sc_state = NCR_CMDCOMPLETE; 2630 1.83.2.2 lukem } else 2631 1.83.2.2 lukem printf("%s: STATUS_PHASE: msg %d\n", 2632 1.83.2.2 lukem sc->sc_dev.dv_xname, msg); 2633 1.83.2.2 lukem sc->sc_imlen = 0; 2634 1.83.2.2 lukem NCRCMD(sc, NCRCMD_MSGOK); 2635 1.83.2.2 lukem goto shortcut; /* ie. wait for disconnect */ 2636 1.83.2.2 lukem } 2637 1.83.2.2 lukem break; 2638 1.83.2.2 lukem 2639 1.83.2.2 lukem default: 2640 1.83.2.2 lukem /* Don't panic: reset. */ 2641 1.83.2.2 lukem printf("%s: invalid state: %d\n", 2642 1.83.2.2 lukem sc->sc_dev.dv_xname, sc->sc_state); 2643 1.83.2.2 lukem ncr53c9x_scsi_reset(sc); 2644 1.83.2.2 lukem goto out; 2645 1.83.2.2 lukem } 2646 1.83.2.2 lukem 2647 1.83.2.2 lukem /* 2648 1.83.2.2 lukem * Driver is now in state NCR_CONNECTED, i.e. we 2649 1.83.2.2 lukem * have a current command working the SCSI bus. 2650 1.83.2.2 lukem */ 2651 1.83.2.2 lukem if (sc->sc_state != NCR_CONNECTED || ecb == NULL) { 2652 1.83.2.2 lukem panic("ncr53c9x: no nexus"); 2653 1.83.2.2 lukem } 2654 1.83.2.2 lukem 2655 1.83.2.2 lukem switch (sc->sc_phase) { 2656 1.83.2.2 lukem case MESSAGE_OUT_PHASE: 2657 1.83.2.2 lukem NCR_PHASE(("MESSAGE_OUT_PHASE ")); 2658 1.83.2.2 lukem ncr53c9x_msgout(sc); 2659 1.83.2.2 lukem sc->sc_prevphase = MESSAGE_OUT_PHASE; 2660 1.83.2.2 lukem break; 2661 1.83.2.2 lukem 2662 1.83.2.2 lukem case MESSAGE_IN_PHASE: 2663 1.83.2.2 lukem msgin: 2664 1.83.2.2 lukem NCR_PHASE(("MESSAGE_IN_PHASE ")); 2665 1.83.2.2 lukem if ((sc->sc_espintr & NCRINTR_BS) != 0) { 2666 1.83.2.2 lukem if ((sc->sc_rev != NCR_VARIANT_FAS366) || 2667 1.83.2.2 lukem !(sc->sc_espstat2 & NCRFAS_STAT2_EMPTY)) { 2668 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2669 1.83.2.2 lukem } 2670 1.83.2.2 lukem sc->sc_flags |= NCR_WAITI; 2671 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS); 2672 1.83.2.2 lukem } else if ((sc->sc_espintr & NCRINTR_FC) != 0) { 2673 1.83.2.2 lukem if ((sc->sc_flags & NCR_WAITI) == 0) { 2674 1.83.2.2 lukem printf("%s: MSGIN: unexpected FC bit: " 2675 1.83.2.2 lukem "[intr %x, stat %x, step %x]\n", 2676 1.83.2.2 lukem sc->sc_dev.dv_xname, 2677 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, 2678 1.83.2.2 lukem sc->sc_espstep); 2679 1.83.2.2 lukem } 2680 1.83.2.2 lukem sc->sc_flags &= ~NCR_WAITI; 2681 1.83.2.2 lukem ncr53c9x_rdfifo(sc, 2682 1.83.2.2 lukem (sc->sc_prevphase == sc->sc_phase) ? 2683 1.83.2.2 lukem NCR_RDFIFO_CONTINUE : NCR_RDFIFO_START); 2684 1.83.2.2 lukem ncr53c9x_msgin(sc); 2685 1.83.2.2 lukem } else { 2686 1.83.2.2 lukem printf("%s: MSGIN: weird bits: " 2687 1.83.2.2 lukem "[intr %x, stat %x, step %x]\n", 2688 1.83.2.2 lukem sc->sc_dev.dv_xname, 2689 1.83.2.2 lukem sc->sc_espintr, sc->sc_espstat, sc->sc_espstep); 2690 1.83.2.2 lukem } 2691 1.83.2.2 lukem sc->sc_prevphase = MESSAGE_IN_PHASE; 2692 1.83.2.2 lukem goto shortcut; /* i.e. expect data to be ready */ 2693 1.83.2.2 lukem break; 2694 1.83.2.2 lukem 2695 1.83.2.2 lukem case COMMAND_PHASE: 2696 1.83.2.2 lukem /* 2697 1.83.2.2 lukem * Send the command block. Normally we don't see this 2698 1.83.2.2 lukem * phase because the SEL_ATN command takes care of 2699 1.83.2.2 lukem * all this. However, we end up here if either the 2700 1.83.2.2 lukem * target or we wanted to exchange some more messages 2701 1.83.2.2 lukem * first (e.g. to start negotiations). 2702 1.83.2.2 lukem */ 2703 1.83.2.2 lukem 2704 1.83.2.2 lukem NCR_PHASE(("COMMAND_PHASE 0x%02x (%d) ", 2705 1.83.2.2 lukem ecb->cmd.cmd.opcode, ecb->clen)); 2706 1.83.2.2 lukem if (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF) { 2707 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2708 1.83.2.2 lukem /* DELAY(1);*/ 2709 1.83.2.2 lukem } 2710 1.83.2.2 lukem if (sc->sc_features & NCR_F_DMASELECT) { 2711 1.83.2.2 lukem size_t size; 2712 1.83.2.2 lukem /* setup DMA transfer for command */ 2713 1.83.2.2 lukem size = ecb->clen; 2714 1.83.2.2 lukem sc->sc_cmdlen = size; 2715 1.83.2.2 lukem sc->sc_cmdp = (caddr_t)&ecb->cmd.cmd; 2716 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_cmdp, &sc->sc_cmdlen, 2717 1.83.2.2 lukem 0, &size); 2718 1.83.2.2 lukem /* Program the SCSI counter */ 2719 1.83.2.2 lukem NCR_SET_COUNT(sc, size); 2720 1.83.2.2 lukem 2721 1.83.2.2 lukem /* load the count in */ 2722 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 2723 1.83.2.2 lukem 2724 1.83.2.2 lukem /* start the command transfer */ 2725 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS | NCRCMD_DMA); 2726 1.83.2.2 lukem NCRDMA_GO(sc); 2727 1.83.2.2 lukem } else { 2728 1.83.2.2 lukem ncr53c9x_wrfifo(sc, (u_char *)&ecb->cmd.cmd, ecb->clen); 2729 1.83.2.2 lukem NCRCMD(sc, NCRCMD_TRANS); 2730 1.83.2.2 lukem } 2731 1.83.2.2 lukem sc->sc_prevphase = COMMAND_PHASE; 2732 1.83.2.2 lukem break; 2733 1.83.2.2 lukem 2734 1.83.2.2 lukem case DATA_OUT_PHASE: 2735 1.83.2.2 lukem NCR_PHASE(("DATA_OUT_PHASE [%ld] ",(long)sc->sc_dleft)); 2736 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2737 1.83.2.2 lukem size = min(sc->sc_dleft, sc->sc_maxxfer); 2738 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_dp, &sc->sc_dleft, 0, &size); 2739 1.83.2.2 lukem sc->sc_prevphase = DATA_OUT_PHASE; 2740 1.83.2.2 lukem goto setup_xfer; 2741 1.83.2.2 lukem 2742 1.83.2.2 lukem case DATA_IN_PHASE: 2743 1.83.2.2 lukem NCR_PHASE(("DATA_IN_PHASE ")); 2744 1.83.2.2 lukem if (sc->sc_rev == NCR_VARIANT_ESP100) 2745 1.83.2.2 lukem NCRCMD(sc, NCRCMD_FLUSH); 2746 1.83.2.2 lukem size = min(sc->sc_dleft, sc->sc_maxxfer); 2747 1.83.2.2 lukem NCRDMA_SETUP(sc, &sc->sc_dp, &sc->sc_dleft, 1, &size); 2748 1.83.2.2 lukem sc->sc_prevphase = DATA_IN_PHASE; 2749 1.83.2.2 lukem setup_xfer: 2750 1.83.2.2 lukem /* Target returned to data phase: wipe "done" memory */ 2751 1.83.2.2 lukem ecb->flags &= ~ECB_TENTATIVE_DONE; 2752 1.83.2.2 lukem 2753 1.83.2.2 lukem /* Program the SCSI counter */ 2754 1.83.2.2 lukem NCR_SET_COUNT(sc, size); 2755 1.83.2.2 lukem 2756 1.83.2.2 lukem /* load the count in */ 2757 1.83.2.2 lukem NCRCMD(sc, NCRCMD_NOP|NCRCMD_DMA); 2758 1.83.2.2 lukem 2759 1.83.2.2 lukem /* 2760 1.83.2.2 lukem * Note that if `size' is 0, we've already transceived 2761 1.83.2.2 lukem * all the bytes we want but we're still in DATA PHASE. 2762 1.83.2.2 lukem * Apparently, the device needs padding. Also, a 2763 1.83.2.2 lukem * transfer size of 0 means "maximum" to the chip 2764 1.83.2.2 lukem * DMA logic. 2765 1.83.2.2 lukem */ 2766 1.83.2.2 lukem NCRCMD(sc, 2767 1.83.2.2 lukem (size == 0 ? NCRCMD_TRPAD : NCRCMD_TRANS) | NCRCMD_DMA); 2768 1.83.2.2 lukem NCRDMA_GO(sc); 2769 1.83.2.2 lukem return (1); 2770 1.83.2.2 lukem 2771 1.83.2.2 lukem case STATUS_PHASE: 2772 1.83.2.2 lukem NCR_PHASE(("STATUS_PHASE ")); 2773 1.83.2.2 lukem sc->sc_flags |= NCR_ICCS; 2774 1.83.2.2 lukem NCRCMD(sc, NCRCMD_ICCS); 2775 1.83.2.2 lukem sc->sc_prevphase = STATUS_PHASE; 2776 1.83.2.2 lukem goto shortcut; /* i.e. expect status results soon */ 2777 1.83.2.2 lukem break; 2778 1.83.2.2 lukem 2779 1.83.2.2 lukem case INVALID_PHASE: 2780 1.83.2.2 lukem break; 2781 1.83.2.2 lukem 2782 1.83.2.2 lukem default: 2783 1.83.2.2 lukem printf("%s: unexpected bus phase; resetting\n", 2784 1.83.2.2 lukem sc->sc_dev.dv_xname); 2785 1.83.2.2 lukem goto reset; 2786 1.83.2.2 lukem } 2787 1.83.2.2 lukem 2788 1.83.2.2 lukem out: 2789 1.83.2.2 lukem return (1); 2790 1.83.2.2 lukem 2791 1.83.2.2 lukem reset: 2792 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2793 1.83.2.2 lukem goto out; 2794 1.83.2.2 lukem 2795 1.83.2.2 lukem finish: 2796 1.83.2.2 lukem ncr53c9x_done(sc, ecb); 2797 1.83.2.2 lukem goto out; 2798 1.83.2.2 lukem 2799 1.83.2.2 lukem sched: 2800 1.83.2.2 lukem sc->sc_state = NCR_IDLE; 2801 1.83.2.2 lukem ncr53c9x_sched(sc); 2802 1.83.2.2 lukem goto out; 2803 1.83.2.2 lukem 2804 1.83.2.2 lukem shortcut: 2805 1.83.2.2 lukem /* 2806 1.83.2.2 lukem * The idea is that many of the SCSI operations take very little 2807 1.83.2.2 lukem * time, and going away and getting interrupted is too high an 2808 1.83.2.2 lukem * overhead to pay. For example, selecting, sending a message 2809 1.83.2.2 lukem * and command and then doing some work can be done in one "pass". 2810 1.83.2.2 lukem * 2811 1.83.2.2 lukem * The delay is a heuristic. It is 2 when at 20MHz, 2 at 25MHz and 1 2812 1.83.2.2 lukem * at 40MHz. This needs testing. 2813 1.83.2.2 lukem */ 2814 1.83.2.2 lukem { 2815 1.83.2.2 lukem struct timeval wait, cur; 2816 1.83.2.2 lukem 2817 1.83.2.2 lukem microtime(&wait); 2818 1.83.2.2 lukem wait.tv_usec += 50 / sc->sc_freq; 2819 1.83.2.2 lukem if (wait.tv_usec > 1000000) { 2820 1.83.2.2 lukem wait.tv_sec++; 2821 1.83.2.2 lukem wait.tv_usec -= 1000000; 2822 1.83.2.2 lukem } 2823 1.83.2.2 lukem do { 2824 1.83.2.2 lukem if (NCRDMA_ISINTR(sc)) 2825 1.83.2.2 lukem goto again; 2826 1.83.2.2 lukem microtime(&cur); 2827 1.83.2.2 lukem } while (cur.tv_sec <= wait.tv_sec && 2828 1.83.2.2 lukem cur.tv_usec <= wait.tv_usec); 2829 1.83.2.2 lukem } 2830 1.83.2.2 lukem goto out; 2831 1.83.2.2 lukem } 2832 1.83.2.2 lukem 2833 1.83.2.2 lukem void 2834 1.83.2.2 lukem ncr53c9x_abort(sc, ecb) 2835 1.83.2.2 lukem struct ncr53c9x_softc *sc; 2836 1.83.2.2 lukem struct ncr53c9x_ecb *ecb; 2837 1.83.2.2 lukem { 2838 1.83.2.2 lukem 2839 1.83.2.2 lukem /* 2 secs for the abort */ 2840 1.83.2.2 lukem ecb->timeout = NCR_ABORT_TIMEOUT; 2841 1.83.2.2 lukem ecb->flags |= ECB_ABORT; 2842 1.83.2.2 lukem 2843 1.83.2.2 lukem if (ecb == sc->sc_nexus) { 2844 1.83.2.2 lukem int timeout; 2845 1.83.2.2 lukem 2846 1.83.2.2 lukem /* 2847 1.83.2.2 lukem * If we're still selecting, the message will be scheduled 2848 1.83.2.2 lukem * after selection is complete. 2849 1.83.2.2 lukem */ 2850 1.83.2.2 lukem if (sc->sc_state == NCR_CONNECTED) 2851 1.83.2.2 lukem ncr53c9x_sched_msgout(SEND_ABORT); 2852 1.83.2.2 lukem 2853 1.83.2.2 lukem /* 2854 1.83.2.2 lukem * Reschedule timeout. 2855 1.83.2.2 lukem */ 2856 1.83.2.2 lukem timeout = ecb->timeout; 2857 1.83.2.2 lukem if (timeout > 1000000) 2858 1.83.2.2 lukem timeout = (timeout / 1000) * hz; 2859 1.83.2.2 lukem else 2860 1.83.2.2 lukem timeout = (timeout * hz) / 1000; 2861 1.83.2.2 lukem callout_reset(&ecb->xs->xs_callout, timeout, 2862 1.83.2.2 lukem ncr53c9x_timeout, ecb); 2863 1.83.2.2 lukem } else { 2864 1.83.2.2 lukem /* 2865 1.83.2.2 lukem * Just leave the command where it is. 2866 1.83.2.2 lukem * XXX - what choice do we have but to reset the SCSI 2867 1.83.2.2 lukem * eventually? 2868 1.83.2.2 lukem */ 2869 1.83.2.2 lukem if (sc->sc_state == NCR_IDLE) 2870 1.83.2.2 lukem ncr53c9x_sched(sc); 2871 1.83.2.2 lukem } 2872 1.83.2.2 lukem } 2873 1.83.2.2 lukem 2874 1.83.2.2 lukem void 2875 1.83.2.2 lukem ncr53c9x_timeout(arg) 2876 1.83.2.2 lukem void *arg; 2877 1.83.2.2 lukem { 2878 1.83.2.2 lukem struct ncr53c9x_ecb *ecb = arg; 2879 1.83.2.2 lukem struct scsipi_xfer *xs = ecb->xs; 2880 1.83.2.2 lukem struct scsipi_periph *periph = xs->xs_periph; 2881 1.83.2.2 lukem struct ncr53c9x_softc *sc = 2882 1.83.2.2 lukem (void *)periph->periph_channel->chan_adapter->adapt_dev; 2883 1.83.2.2 lukem struct ncr53c9x_tinfo *ti = &sc->sc_tinfo[periph->periph_target]; 2884 1.83.2.2 lukem int s; 2885 1.83.2.2 lukem 2886 1.83.2.2 lukem scsipi_printaddr(periph); 2887 1.83.2.2 lukem printf("%s: timed out [ecb %p (flags 0x%x, dleft %x, stat %x)], " 2888 1.83.2.2 lukem "<state %d, nexus %p, phase(l %x, c %x, p %x), resid %lx, " 2889 1.83.2.2 lukem "msg(q %x,o %x) %s>", 2890 1.83.2.2 lukem sc->sc_dev.dv_xname, 2891 1.83.2.2 lukem ecb, ecb->flags, ecb->dleft, ecb->stat, 2892 1.83.2.2 lukem sc->sc_state, sc->sc_nexus, 2893 1.83.2.2 lukem NCR_READ_REG(sc, NCR_STAT), 2894 1.83.2.2 lukem sc->sc_phase, sc->sc_prevphase, 2895 1.83.2.2 lukem (long)sc->sc_dleft, sc->sc_msgpriq, sc->sc_msgout, 2896 1.83.2.2 lukem NCRDMA_ISACTIVE(sc) ? "DMA active" : ""); 2897 1.83.2.2 lukem #if NCR53C9X_DEBUG > 1 2898 1.83.2.2 lukem printf("TRACE: %s.", ecb->trace); 2899 1.83.2.2 lukem #endif 2900 1.83.2.2 lukem 2901 1.83.2.2 lukem s = splbio(); 2902 1.83.2.2 lukem 2903 1.83.2.2 lukem if (ecb->flags & ECB_ABORT) { 2904 1.83.2.2 lukem /* abort timed out */ 2905 1.83.2.2 lukem printf(" AGAIN\n"); 2906 1.83.2.2 lukem 2907 1.83.2.2 lukem ncr53c9x_init(sc, 1); 2908 1.83.2.2 lukem } else { 2909 1.83.2.2 lukem /* abort the operation that has timed out */ 2910 1.83.2.2 lukem printf("\n"); 2911 1.83.2.2 lukem xs->error = XS_TIMEOUT; 2912 1.83.2.2 lukem ncr53c9x_abort(sc, ecb); 2913 1.83.2.2 lukem 2914 1.83.2.2 lukem /* Disable sync mode if stuck in a data phase */ 2915 1.83.2.2 lukem if (ecb == sc->sc_nexus && 2916 1.83.2.2 lukem (ti->flags & T_SYNCMODE) != 0 && 2917 1.83.2.2 lukem (sc->sc_phase & (MSGI|CDI)) == 0) { 2918 1.83.2.2 lukem /* XXX ASYNC CALLBACK! */ 2919 1.83.2.2 lukem scsipi_printaddr(periph); 2920 1.83.2.2 lukem printf("sync negotiation disabled\n"); 2921 1.83.2.2 lukem sc->sc_cfflags |= (1 << (periph->periph_target + 8)); 2922 1.83.2.2 lukem ncr53c9x_update_xfer_mode(sc, periph->periph_target); 2923 1.83.2.2 lukem } 2924 1.83.2.2 lukem } 2925 1.83.2.2 lukem 2926 1.83.2.2 lukem splx(s); 2927 1.83.2.2 lukem } 2928 1.83.2.2 lukem 2929 1.83.2.2 lukem void 2930 1.83.2.2 lukem ncr53c9x_watch(arg) 2931 1.83.2.2 lukem void *arg; 2932 1.83.2.2 lukem { 2933 1.83.2.2 lukem struct ncr53c9x_softc *sc = (struct ncr53c9x_softc *)arg; 2934 1.83.2.2 lukem struct ncr53c9x_tinfo *ti; 2935 1.83.2.2 lukem struct ncr53c9x_linfo *li; 2936 1.83.2.2 lukem int t, s; 2937 1.83.2.2 lukem /* Delete any structures that have not been used in 10min. */ 2938 1.83.2.2 lukem time_t old = time.tv_sec - (10 * 60); 2939 1.83.2.2 lukem 2940 1.83.2.2 lukem s = splbio(); 2941 1.83.2.2 lukem for (t = 0; t < NCR_NTARG; t++) { 2942 1.83.2.2 lukem ti = &sc->sc_tinfo[t]; 2943 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2944 1.83.2.2 lukem while (li) { 2945 1.83.2.2 lukem if (li->last_used < old && 2946 1.83.2.2 lukem li->untagged == NULL && 2947 1.83.2.2 lukem li->used == 0) { 2948 1.83.2.2 lukem if (li->lun < NCR_NLUN) 2949 1.83.2.2 lukem ti->lun[li->lun] = NULL; 2950 1.83.2.2 lukem LIST_REMOVE(li, link); 2951 1.83.2.2 lukem free(li, M_DEVBUF); 2952 1.83.2.2 lukem /* Restart the search at the beginning */ 2953 1.83.2.2 lukem li = LIST_FIRST(&ti->luns); 2954 1.83.2.2 lukem continue; 2955 1.83.2.2 lukem } 2956 1.83.2.2 lukem li = LIST_NEXT(li, link); 2957 1.83.2.2 lukem } 2958 1.83.2.2 lukem } 2959 1.83.2.2 lukem splx(s); 2960 1.83.2.2 lukem callout_reset(&sc->sc_watchdog, 60 * hz, ncr53c9x_watch, sc); 2961 1.83.2.2 lukem } 2962 1.83.2.2 lukem 2963
Indexes created Sat Oct 25 16:10:12 GMT 2025