| 1 | /* $NetBSD: siop.c,v 1.100 2013/11/02 13:59:14 gson Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2000 Manuel Bouyer. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | /* SYM53c7/8xx PCI-SCSI I/O Processors driver */ |
| 29 | |
| 30 | #include <sys/cdefs.h> |
| 31 | __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.100 2013/11/02 13:59:14 gson Exp $" ); |
| 32 | |
| 33 | #include <sys/param.h> |
| 34 | #include <sys/systm.h> |
| 35 | #include <sys/device.h> |
| 36 | #include <sys/malloc.h> |
| 37 | #include <sys/buf.h> |
| 38 | #include <sys/kernel.h> |
| 39 | |
| 40 | #include <machine/endian.h> |
| 41 | #include <sys/bus.h> |
| 42 | |
| 43 | #include <dev/microcode/siop/siop.out> |
| 44 | |
| 45 | #include <dev/scsipi/scsi_all.h> |
| 46 | #include <dev/scsipi/scsi_message.h> |
| 47 | #include <dev/scsipi/scsipi_all.h> |
| 48 | |
| 49 | #include <dev/scsipi/scsiconf.h> |
| 50 | |
| 51 | #include <dev/ic/siopreg.h> |
| 52 | #include <dev/ic/siopvar_common.h> |
| 53 | #include <dev/ic/siopvar.h> |
| 54 | |
| 55 | #include "opt_siop.h" |
| 56 | |
| 57 | /* |
| 58 | #define SIOP_DEBUG |
| 59 | #define SIOP_DEBUG_DR |
| 60 | #define SIOP_DEBUG_INTR |
| 61 | #define SIOP_DEBUG_SCHED |
| 62 | #define SIOP_DUMP_SCRIPT |
| 63 | */ |
| 64 | |
| 65 | #define SIOP_STATS |
| 66 | |
| 67 | #ifndef SIOP_DEFAULT_TARGET |
| 68 | #define SIOP_DEFAULT_TARGET 7 |
| 69 | #endif |
| 70 | |
| 71 | /* number of cmd descriptors per block */ |
| 72 | #define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct siop_xfer)) |
| 73 | |
| 74 | /* Number of scheduler slot (needs to match script) */ |
| 75 | #define SIOP_NSLOTS 40 |
| 76 | |
| 77 | void siop_reset(struct siop_softc *); |
| 78 | void siop_handle_reset(struct siop_softc *); |
| 79 | int siop_handle_qtag_reject(struct siop_cmd *); |
| 80 | void siop_scsicmd_end(struct siop_cmd *); |
| 81 | void siop_unqueue(struct siop_softc *, int, int); |
| 82 | static void siop_start(struct siop_softc *, struct siop_cmd *); |
| 83 | void siop_timeout(void *); |
| 84 | int siop_scsicmd(struct scsipi_xfer *); |
| 85 | void siop_scsipi_request(struct scsipi_channel *, |
| 86 | scsipi_adapter_req_t, void *); |
| 87 | void siop_dump_script(struct siop_softc *); |
| 88 | void siop_morecbd(struct siop_softc *); |
| 89 | struct siop_lunsw *siop_get_lunsw(struct siop_softc *); |
| 90 | void siop_add_reselsw(struct siop_softc *, int); |
| 91 | void siop_update_scntl3(struct siop_softc *, |
| 92 | struct siop_common_target *); |
| 93 | |
| 94 | #ifdef SIOP_STATS |
| 95 | static int siop_stat_intr = 0; |
| 96 | static int siop_stat_intr_shortxfer = 0; |
| 97 | static int siop_stat_intr_sdp = 0; |
| 98 | static int siop_stat_intr_saveoffset = 0; |
| 99 | static int siop_stat_intr_done = 0; |
| 100 | static int siop_stat_intr_xferdisc = 0; |
| 101 | static int siop_stat_intr_lunresel = 0; |
| 102 | static int siop_stat_intr_qfull = 0; |
| 103 | void siop_printstats(void); |
| 104 | #define INCSTAT(x) x++ |
| 105 | #else |
| 106 | #define INCSTAT(x) |
| 107 | #endif |
| 108 | |
| 109 | static inline void siop_script_sync(struct siop_softc *, int); |
| 110 | static inline void |
| 111 | siop_script_sync(struct siop_softc *sc, int ops) |
| 112 | { |
| 113 | |
| 114 | if ((sc->sc_c.features & SF_CHIP_RAM) == 0) |
| 115 | bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, |
| 116 | PAGE_SIZE, ops); |
| 117 | } |
| 118 | |
| 119 | static inline uint32_t siop_script_read(struct siop_softc *, u_int); |
| 120 | static inline uint32_t |
| 121 | siop_script_read(struct siop_softc *sc, u_int offset) |
| 122 | { |
| 123 | |
| 124 | if (sc->sc_c.features & SF_CHIP_RAM) { |
| 125 | return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
| 126 | offset * 4); |
| 127 | } else { |
| 128 | return siop_ctoh32(&sc->sc_c, sc->sc_c.sc_script[offset]); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | static inline void siop_script_write(struct siop_softc *, u_int, |
| 133 | uint32_t); |
| 134 | static inline void |
| 135 | siop_script_write(struct siop_softc *sc, u_int offset, uint32_t val) |
| 136 | { |
| 137 | |
| 138 | if (sc->sc_c.features & SF_CHIP_RAM) { |
| 139 | bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
| 140 | offset * 4, val); |
| 141 | } else { |
| 142 | sc->sc_c.sc_script[offset] = siop_htoc32(&sc->sc_c, val); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | void |
| 147 | siop_attach(struct siop_softc *sc) |
| 148 | { |
| 149 | |
| 150 | if (siop_common_attach(&sc->sc_c) != 0) |
| 151 | return; |
| 152 | |
| 153 | TAILQ_INIT(&sc->free_list); |
| 154 | TAILQ_INIT(&sc->cmds); |
| 155 | TAILQ_INIT(&sc->lunsw_list); |
| 156 | sc->sc_currschedslot = 0; |
| 157 | #ifdef SIOP_DEBUG |
| 158 | printf("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n" , |
| 159 | device_xname(sc->sc_c.sc_dev), (int)sizeof(siop_script), |
| 160 | (uint32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); |
| 161 | #endif |
| 162 | |
| 163 | sc->sc_c.sc_adapt.adapt_max_periph = SIOP_NTAG - 1; |
| 164 | sc->sc_c.sc_adapt.adapt_request = siop_scsipi_request; |
| 165 | |
| 166 | /* Do a bus reset, so that devices fall back to narrow/async */ |
| 167 | siop_resetbus(&sc->sc_c); |
| 168 | /* |
| 169 | * siop_reset() will reset the chip, thus clearing pending interrupts |
| 170 | */ |
| 171 | siop_reset(sc); |
| 172 | #ifdef SIOP_DUMP_SCRIPT |
| 173 | siop_dump_script(sc); |
| 174 | #endif |
| 175 | |
| 176 | config_found(sc->sc_c.sc_dev, &sc->sc_c.sc_chan, scsiprint); |
| 177 | } |
| 178 | |
| 179 | void |
| 180 | siop_reset(struct siop_softc *sc) |
| 181 | { |
| 182 | int i, j; |
| 183 | struct siop_lunsw *lunsw; |
| 184 | |
| 185 | siop_common_reset(&sc->sc_c); |
| 186 | |
| 187 | /* copy and patch the script */ |
| 188 | if (sc->sc_c.features & SF_CHIP_RAM) { |
| 189 | bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, |
| 190 | siop_script, __arraycount(siop_script)); |
| 191 | for (j = 0; j < __arraycount(E_abs_msgin_Used); j++) { |
| 192 | bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
| 193 | E_abs_msgin_Used[j] * 4, |
| 194 | sc->sc_c.sc_scriptaddr + Ent_msgin_space); |
| 195 | } |
| 196 | if (sc->sc_c.features & SF_CHIP_LED0) { |
| 197 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
| 198 | sc->sc_c.sc_ramh, |
| 199 | Ent_led_on1, siop_led_on, |
| 200 | __arraycount(siop_led_on)); |
| 201 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
| 202 | sc->sc_c.sc_ramh, |
| 203 | Ent_led_on2, siop_led_on, |
| 204 | __arraycount(siop_led_on)); |
| 205 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
| 206 | sc->sc_c.sc_ramh, |
| 207 | Ent_led_off, siop_led_off, |
| 208 | __arraycount(siop_led_off)); |
| 209 | } |
| 210 | } else { |
| 211 | for (j = 0; j < __arraycount(siop_script); j++) { |
| 212 | sc->sc_c.sc_script[j] = |
| 213 | siop_htoc32(&sc->sc_c, siop_script[j]); |
| 214 | } |
| 215 | for (j = 0; j < __arraycount(E_abs_msgin_Used); j++) { |
| 216 | sc->sc_c.sc_script[E_abs_msgin_Used[j]] = |
| 217 | siop_htoc32(&sc->sc_c, |
| 218 | sc->sc_c.sc_scriptaddr + Ent_msgin_space); |
| 219 | } |
| 220 | if (sc->sc_c.features & SF_CHIP_LED0) { |
| 221 | for (j = 0; j < __arraycount(siop_led_on); j++) |
| 222 | sc->sc_c.sc_script[ |
| 223 | Ent_led_on1 / sizeof(siop_led_on[0]) + j |
| 224 | ] = siop_htoc32(&sc->sc_c, siop_led_on[j]); |
| 225 | for (j = 0; j < __arraycount(siop_led_on); j++) |
| 226 | sc->sc_c.sc_script[ |
| 227 | Ent_led_on2 / sizeof(siop_led_on[0]) + j |
| 228 | ] = siop_htoc32(&sc->sc_c, siop_led_on[j]); |
| 229 | for (j = 0; j < __arraycount(siop_led_off); j++) |
| 230 | sc->sc_c.sc_script[ |
| 231 | Ent_led_off / sizeof(siop_led_off[0]) + j |
| 232 | ] = siop_htoc32(&sc->sc_c, siop_led_off[j]); |
| 233 | } |
| 234 | } |
| 235 | sc->script_free_lo = __arraycount(siop_script); |
| 236 | sc->script_free_hi = sc->sc_c.ram_size / 4; |
| 237 | sc->sc_ntargets = 0; |
| 238 | |
| 239 | /* free used and unused lun switches */ |
| 240 | while((lunsw = TAILQ_FIRST(&sc->lunsw_list)) != NULL) { |
| 241 | #ifdef SIOP_DEBUG |
| 242 | printf("%s: free lunsw at offset %d\n" , |
| 243 | device_xname(sc->sc_c.sc_dev), lunsw->lunsw_off); |
| 244 | #endif |
| 245 | TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); |
| 246 | free(lunsw, M_DEVBUF); |
| 247 | } |
| 248 | TAILQ_INIT(&sc->lunsw_list); |
| 249 | /* restore reselect switch */ |
| 250 | for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { |
| 251 | struct siop_target *target; |
| 252 | if (sc->sc_c.targets[i] == NULL) |
| 253 | continue; |
| 254 | #ifdef SIOP_DEBUG |
| 255 | printf("%s: restore sw for target %d\n" , |
| 256 | device_xname(sc->sc_c.sc_dev), i); |
| 257 | #endif |
| 258 | target = (struct siop_target *)sc->sc_c.targets[i]; |
| 259 | free(target->lunsw, M_DEVBUF); |
| 260 | target->lunsw = siop_get_lunsw(sc); |
| 261 | if (target->lunsw == NULL) { |
| 262 | aprint_error_dev(sc->sc_c.sc_dev, |
| 263 | "can't alloc lunsw for target %d\n" , i); |
| 264 | break; |
| 265 | } |
| 266 | siop_add_reselsw(sc, i); |
| 267 | } |
| 268 | |
| 269 | /* start script */ |
| 270 | if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { |
| 271 | bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, |
| 272 | PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 273 | } |
| 274 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, |
| 275 | sc->sc_c.sc_scriptaddr + Ent_reselect); |
| 276 | } |
| 277 | |
| 278 | #if 0 |
| 279 | #define CALL_SCRIPT(ent) do { \ |
| 280 | printf ("start script DSA 0x%lx DSP 0x%lx\n", \ |
| 281 | siop_cmd->cmd_c.dsa, \ |
| 282 | sc->sc_c.sc_scriptaddr + ent); \ |
| 283 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ |
| 284 | SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ |
| 285 | } while (/* CONSTCOND */0) |
| 286 | #else |
| 287 | #define CALL_SCRIPT(ent) do { \ |
| 288 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ |
| 289 | SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ |
| 290 | } while (/* CONSTCOND */0) |
| 291 | #endif |
| 292 | |
| 293 | int |
| 294 | siop_intr(void *v) |
| 295 | { |
| 296 | struct siop_softc *sc = v; |
| 297 | struct siop_target *siop_target; |
| 298 | struct siop_cmd *siop_cmd; |
| 299 | struct siop_lun *siop_lun; |
| 300 | struct scsipi_xfer *xs; |
| 301 | int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ |
| 302 | uint32_t irqcode; |
| 303 | int need_reset = 0; |
| 304 | int offset, target, lun, tag; |
| 305 | bus_addr_t dsa; |
| 306 | struct siop_cbd *cbdp; |
| 307 | int freetarget = 0; |
| 308 | int restart = 0; |
| 309 | |
| 310 | istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); |
| 311 | if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) |
| 312 | return 0; |
| 313 | INCSTAT(siop_stat_intr); |
| 314 | if (istat & ISTAT_INTF) { |
| 315 | printf("INTRF\n" ); |
| 316 | bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 317 | SIOP_ISTAT, ISTAT_INTF); |
| 318 | } |
| 319 | if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == |
| 320 | (ISTAT_DIP | ISTAT_ABRT)) { |
| 321 | /* clear abort */ |
| 322 | bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 323 | SIOP_ISTAT, 0); |
| 324 | } |
| 325 | /* use DSA to find the current siop_cmd */ |
| 326 | siop_cmd = NULL; |
| 327 | dsa = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA); |
| 328 | TAILQ_FOREACH(cbdp, &sc->cmds, next) { |
| 329 | if (dsa >= cbdp->xferdma->dm_segs[0].ds_addr && |
| 330 | dsa < cbdp->xferdma->dm_segs[0].ds_addr + PAGE_SIZE) { |
| 331 | dsa -= cbdp->xferdma->dm_segs[0].ds_addr; |
| 332 | siop_cmd = &cbdp->cmds[dsa / sizeof(struct siop_xfer)]; |
| 333 | siop_table_sync(siop_cmd, |
| 334 | BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
| 335 | break; |
| 336 | } |
| 337 | } |
| 338 | if (siop_cmd) { |
| 339 | xs = siop_cmd->cmd_c.xs; |
| 340 | siop_target = (struct siop_target *)siop_cmd->cmd_c.siop_target; |
| 341 | target = siop_cmd->cmd_c.xs->xs_periph->periph_target; |
| 342 | lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; |
| 343 | tag = siop_cmd->cmd_c.tag; |
| 344 | siop_lun = siop_target->siop_lun[lun]; |
| 345 | #ifdef DIAGNOSTIC |
| 346 | if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { |
| 347 | printf("siop_cmd (lun %d) for DSA 0x%x " |
| 348 | "not active (%d)\n" , lun, (u_int)dsa, |
| 349 | siop_cmd->cmd_c.status); |
| 350 | xs = NULL; |
| 351 | siop_target = NULL; |
| 352 | target = -1; |
| 353 | lun = -1; |
| 354 | tag = -1; |
| 355 | siop_lun = NULL; |
| 356 | siop_cmd = NULL; |
| 357 | } else if (siop_lun->siop_tag[tag].active != siop_cmd) { |
| 358 | printf("siop_cmd (lun %d tag %d) not in siop_lun " |
| 359 | "active (%p != %p)\n" , lun, tag, siop_cmd, |
| 360 | siop_lun->siop_tag[tag].active); |
| 361 | } |
| 362 | #endif |
| 363 | } else { |
| 364 | xs = NULL; |
| 365 | siop_target = NULL; |
| 366 | target = -1; |
| 367 | lun = -1; |
| 368 | tag = -1; |
| 369 | siop_lun = NULL; |
| 370 | } |
| 371 | if (istat & ISTAT_DIP) { |
| 372 | dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 373 | SIOP_DSTAT); |
| 374 | if (dstat & DSTAT_ABRT) { |
| 375 | /* was probably generated by a bus reset IOCTL */ |
| 376 | if ((dstat & DSTAT_DFE) == 0) |
| 377 | siop_clearfifo(&sc->sc_c); |
| 378 | goto reset; |
| 379 | } |
| 380 | if (dstat & DSTAT_SSI) { |
| 381 | printf("single step dsp 0x%08x dsa 0x08%x\n" , |
| 382 | (int)(bus_space_read_4(sc->sc_c.sc_rt, |
| 383 | sc->sc_c.sc_rh, SIOP_DSP) - |
| 384 | sc->sc_c.sc_scriptaddr), |
| 385 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 386 | SIOP_DSA)); |
| 387 | if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && |
| 388 | (istat & ISTAT_SIP) == 0) { |
| 389 | bus_space_write_1(sc->sc_c.sc_rt, |
| 390 | sc->sc_c.sc_rh, SIOP_DCNTL, |
| 391 | bus_space_read_1(sc->sc_c.sc_rt, |
| 392 | sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); |
| 393 | } |
| 394 | return 1; |
| 395 | } |
| 396 | |
| 397 | if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { |
| 398 | printf("DMA IRQ:" ); |
| 399 | if (dstat & DSTAT_IID) |
| 400 | printf(" Illegal instruction" ); |
| 401 | if (dstat & DSTAT_BF) |
| 402 | printf(" bus fault" ); |
| 403 | if (dstat & DSTAT_MDPE) |
| 404 | printf(" parity" ); |
| 405 | if (dstat & DSTAT_DFE) |
| 406 | printf(" DMA fifo empty" ); |
| 407 | else |
| 408 | siop_clearfifo(&sc->sc_c); |
| 409 | printf(", DSP=0x%x DSA=0x%x: " , |
| 410 | (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 411 | SIOP_DSP) - sc->sc_c.sc_scriptaddr), |
| 412 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); |
| 413 | if (siop_cmd) |
| 414 | printf("last msg_in=0x%x status=0x%x\n" , |
| 415 | siop_cmd->cmd_tables->msg_in[0], |
| 416 | siop_ctoh32(&sc->sc_c, |
| 417 | siop_cmd->cmd_tables->status)); |
| 418 | else |
| 419 | aprint_error_dev(sc->sc_c.sc_dev, |
| 420 | "current DSA invalid\n" ); |
| 421 | need_reset = 1; |
| 422 | } |
| 423 | } |
| 424 | if (istat & ISTAT_SIP) { |
| 425 | if (istat & ISTAT_DIP) |
| 426 | delay(10); |
| 427 | /* |
| 428 | * Can't read sist0 & sist1 independently, or we have to |
| 429 | * insert delay |
| 430 | */ |
| 431 | sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 432 | SIOP_SIST0); |
| 433 | sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 434 | SIOP_SSTAT1); |
| 435 | #ifdef SIOP_DEBUG_INTR |
| 436 | printf("scsi interrupt, sist=0x%x sstat1=0x%x " |
| 437 | "DSA=0x%x DSP=0x%lx\n" , sist, |
| 438 | bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 439 | SIOP_SSTAT1), |
| 440 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), |
| 441 | (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 442 | SIOP_DSP) - |
| 443 | sc->sc_c.sc_scriptaddr)); |
| 444 | #endif |
| 445 | if (sist & SIST0_RST) { |
| 446 | siop_handle_reset(sc); |
| 447 | /* no table to flush here */ |
| 448 | return 1; |
| 449 | } |
| 450 | if (sist & SIST0_SGE) { |
| 451 | if (siop_cmd) |
| 452 | scsipi_printaddr(xs->xs_periph); |
| 453 | else |
| 454 | printf("%s:" , device_xname(sc->sc_c.sc_dev)); |
| 455 | printf("scsi gross error\n" ); |
| 456 | goto reset; |
| 457 | } |
| 458 | if ((sist & SIST0_MA) && need_reset == 0) { |
| 459 | if (siop_cmd) { |
| 460 | int scratcha0; |
| 461 | dstat = bus_space_read_1(sc->sc_c.sc_rt, |
| 462 | sc->sc_c.sc_rh, SIOP_DSTAT); |
| 463 | /* |
| 464 | * first restore DSA, in case we were in a S/G |
| 465 | * operation. |
| 466 | */ |
| 467 | bus_space_write_4(sc->sc_c.sc_rt, |
| 468 | sc->sc_c.sc_rh, |
| 469 | SIOP_DSA, siop_cmd->cmd_c.dsa); |
| 470 | scratcha0 = bus_space_read_1(sc->sc_c.sc_rt, |
| 471 | sc->sc_c.sc_rh, SIOP_SCRATCHA); |
| 472 | switch (sstat1 & SSTAT1_PHASE_MASK) { |
| 473 | case SSTAT1_PHASE_STATUS: |
| 474 | /* |
| 475 | * previous phase may be aborted for any reason |
| 476 | * ( for example, the target has less data to |
| 477 | * transfer than requested). Compute resid and |
| 478 | * just go to status, the command should |
| 479 | * terminate. |
| 480 | */ |
| 481 | INCSTAT(siop_stat_intr_shortxfer); |
| 482 | if (scratcha0 & A_flag_data) |
| 483 | siop_ma(&siop_cmd->cmd_c); |
| 484 | else if ((dstat & DSTAT_DFE) == 0) |
| 485 | siop_clearfifo(&sc->sc_c); |
| 486 | CALL_SCRIPT(Ent_status); |
| 487 | return 1; |
| 488 | case SSTAT1_PHASE_MSGIN: |
| 489 | /* |
| 490 | * target may be ready to disconnect |
| 491 | * Compute resid which would be used later |
| 492 | * if a save data pointer is needed. |
| 493 | */ |
| 494 | INCSTAT(siop_stat_intr_xferdisc); |
| 495 | if (scratcha0 & A_flag_data) |
| 496 | siop_ma(&siop_cmd->cmd_c); |
| 497 | else if ((dstat & DSTAT_DFE) == 0) |
| 498 | siop_clearfifo(&sc->sc_c); |
| 499 | bus_space_write_1(sc->sc_c.sc_rt, |
| 500 | sc->sc_c.sc_rh, SIOP_SCRATCHA, |
| 501 | scratcha0 & ~A_flag_data); |
| 502 | CALL_SCRIPT(Ent_msgin); |
| 503 | return 1; |
| 504 | } |
| 505 | aprint_error_dev(sc->sc_c.sc_dev, |
| 506 | "unexpected phase mismatch %d\n" , |
| 507 | sstat1 & SSTAT1_PHASE_MASK); |
| 508 | } else { |
| 509 | aprint_error_dev(sc->sc_c.sc_dev, |
| 510 | "phase mismatch without command\n" ); |
| 511 | } |
| 512 | need_reset = 1; |
| 513 | } |
| 514 | if (sist & SIST0_PAR) { |
| 515 | /* parity error, reset */ |
| 516 | if (siop_cmd) |
| 517 | scsipi_printaddr(xs->xs_periph); |
| 518 | else |
| 519 | printf("%s:" , device_xname(sc->sc_c.sc_dev)); |
| 520 | printf("parity error\n" ); |
| 521 | goto reset; |
| 522 | } |
| 523 | if ((sist & (SIST1_STO << 8)) && need_reset == 0) { |
| 524 | /* selection time out, assume there's no device here */ |
| 525 | if (siop_cmd) { |
| 526 | siop_cmd->cmd_c.status = CMDST_DONE; |
| 527 | xs->error = XS_SELTIMEOUT; |
| 528 | freetarget = 1; |
| 529 | goto end; |
| 530 | } else { |
| 531 | aprint_error_dev(sc->sc_c.sc_dev, |
| 532 | "selection timeout without " |
| 533 | "command\n" ); |
| 534 | need_reset = 1; |
| 535 | } |
| 536 | } |
| 537 | if (sist & SIST0_UDC) { |
| 538 | /* |
| 539 | * unexpected disconnect. Usually the target signals |
| 540 | * a fatal condition this way. Attempt to get sense. |
| 541 | */ |
| 542 | if (siop_cmd) { |
| 543 | siop_cmd->cmd_tables->status = |
| 544 | siop_htoc32(&sc->sc_c, SCSI_CHECK); |
| 545 | goto end; |
| 546 | } |
| 547 | aprint_error_dev(sc->sc_c.sc_dev, |
| 548 | "unexpected disconnect without " |
| 549 | "command\n" ); |
| 550 | goto reset; |
| 551 | } |
| 552 | if (sist & (SIST1_SBMC << 8)) { |
| 553 | /* SCSI bus mode change */ |
| 554 | if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) |
| 555 | goto reset; |
| 556 | if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { |
| 557 | /* |
| 558 | * we have a script interrupt, it will |
| 559 | * restart the script. |
| 560 | */ |
| 561 | goto scintr; |
| 562 | } |
| 563 | /* |
| 564 | * else we have to restart it ourselve, at the |
| 565 | * interrupted instruction. |
| 566 | */ |
| 567 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 568 | SIOP_DSP, |
| 569 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 570 | SIOP_DSP) - 8); |
| 571 | return 1; |
| 572 | } |
| 573 | /* Else it's an unhandled exception (for now). */ |
| 574 | aprint_error_dev(sc->sc_c.sc_dev, |
| 575 | "unhandled scsi interrupt, sist=0x%x sstat1=0x%x " |
| 576 | "DSA=0x%x DSP=0x%x\n" , sist, |
| 577 | bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 578 | SIOP_SSTAT1), |
| 579 | bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), |
| 580 | (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 581 | SIOP_DSP) - sc->sc_c.sc_scriptaddr)); |
| 582 | if (siop_cmd) { |
| 583 | siop_cmd->cmd_c.status = CMDST_DONE; |
| 584 | xs->error = XS_SELTIMEOUT; |
| 585 | goto end; |
| 586 | } |
| 587 | need_reset = 1; |
| 588 | } |
| 589 | if (need_reset) { |
| 590 | reset: |
| 591 | /* fatal error, reset the bus */ |
| 592 | siop_resetbus(&sc->sc_c); |
| 593 | /* no table to flush here */ |
| 594 | return 1; |
| 595 | } |
| 596 | |
| 597 | scintr: |
| 598 | if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ |
| 599 | irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 600 | SIOP_DSPS); |
| 601 | #ifdef SIOP_DEBUG_INTR |
| 602 | printf("script interrupt 0x%x\n" , irqcode); |
| 603 | #endif |
| 604 | /* |
| 605 | * no command, or an inactive command is only valid for a |
| 606 | * reselect interrupt |
| 607 | */ |
| 608 | if ((irqcode & 0x80) == 0) { |
| 609 | if (siop_cmd == NULL) { |
| 610 | aprint_error_dev(sc->sc_c.sc_dev, |
| 611 | "script interrupt (0x%x) with " |
| 612 | "invalid DSA !!!\n" , |
| 613 | irqcode); |
| 614 | goto reset; |
| 615 | } |
| 616 | if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { |
| 617 | aprint_error_dev(sc->sc_c.sc_dev, |
| 618 | "command with invalid status " |
| 619 | "(IRQ code 0x%x current status %d) !\n" , |
| 620 | irqcode, siop_cmd->cmd_c.status); |
| 621 | xs = NULL; |
| 622 | } |
| 623 | } |
| 624 | switch(irqcode) { |
| 625 | case A_int_err: |
| 626 | printf("error, DSP=0x%x\n" , |
| 627 | (int)(bus_space_read_4(sc->sc_c.sc_rt, |
| 628 | sc->sc_c.sc_rh, SIOP_DSP) - |
| 629 | sc->sc_c.sc_scriptaddr)); |
| 630 | if (xs) { |
| 631 | xs->error = XS_SELTIMEOUT; |
| 632 | goto end; |
| 633 | } else { |
| 634 | goto reset; |
| 635 | } |
| 636 | case A_int_reseltarg: |
| 637 | aprint_error_dev(sc->sc_c.sc_dev, |
| 638 | "reselect with invalid target\n" ); |
| 639 | goto reset; |
| 640 | case A_int_resellun: |
| 641 | INCSTAT(siop_stat_intr_lunresel); |
| 642 | target = bus_space_read_1(sc->sc_c.sc_rt, |
| 643 | sc->sc_c.sc_rh, SIOP_SCRATCHA) & 0xf; |
| 644 | lun = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 645 | SIOP_SCRATCHA + 1); |
| 646 | tag = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 647 | SIOP_SCRATCHA + 2); |
| 648 | siop_target = |
| 649 | (struct siop_target *)sc->sc_c.targets[target]; |
| 650 | if (siop_target == NULL) { |
| 651 | printf("%s: reselect with invalid target %d\n" , |
| 652 | device_xname(sc->sc_c.sc_dev), target); |
| 653 | goto reset; |
| 654 | } |
| 655 | siop_lun = siop_target->siop_lun[lun]; |
| 656 | if (siop_lun == NULL) { |
| 657 | printf("%s: target %d reselect with invalid " |
| 658 | "lun %d\n" , device_xname(sc->sc_c.sc_dev), |
| 659 | target, lun); |
| 660 | goto reset; |
| 661 | } |
| 662 | if (siop_lun->siop_tag[tag].active == NULL) { |
| 663 | printf("%s: target %d lun %d tag %d reselect " |
| 664 | "without command\n" , |
| 665 | device_xname(sc->sc_c.sc_dev), |
| 666 | target, lun, tag); |
| 667 | goto reset; |
| 668 | } |
| 669 | siop_cmd = siop_lun->siop_tag[tag].active; |
| 670 | bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 671 | SIOP_DSP, siop_cmd->cmd_c.dsa + |
| 672 | sizeof(struct siop_common_xfer) + |
| 673 | Ent_ldsa_reload_dsa); |
| 674 | siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); |
| 675 | return 1; |
| 676 | case A_int_reseltag: |
| 677 | printf("%s: reselect with invalid tag\n" , |
| 678 | device_xname(sc->sc_c.sc_dev)); |
| 679 | goto reset; |
| 680 | case A_int_msgin: |
| 681 | { |
| 682 | int msgin = bus_space_read_1(sc->sc_c.sc_rt, |
| 683 | sc->sc_c.sc_rh, SIOP_SFBR); |
| 684 | |
| 685 | if (msgin == MSG_MESSAGE_REJECT) { |
| 686 | int msg, extmsg; |
| 687 | if (siop_cmd->cmd_tables->msg_out[0] & 0x80) { |
| 688 | /* |
| 689 | * message was part of a identify + |
| 690 | * something else. Identify shouldn't |
| 691 | * have been rejected. |
| 692 | */ |
| 693 | msg = |
| 694 | siop_cmd->cmd_tables->msg_out[1]; |
| 695 | extmsg = |
| 696 | siop_cmd->cmd_tables->msg_out[3]; |
| 697 | } else { |
| 698 | msg = siop_cmd->cmd_tables->msg_out[0]; |
| 699 | extmsg = |
| 700 | siop_cmd->cmd_tables->msg_out[2]; |
| 701 | } |
| 702 | if (msg == MSG_MESSAGE_REJECT) { |
| 703 | /* MSG_REJECT for a MSG_REJECT !*/ |
| 704 | if (xs) |
| 705 | scsipi_printaddr(xs->xs_periph); |
| 706 | else |
| 707 | printf("%s: " , device_xname( |
| 708 | sc->sc_c.sc_dev)); |
| 709 | printf("our reject message was " |
| 710 | "rejected\n" ); |
| 711 | goto reset; |
| 712 | } |
| 713 | if (msg == MSG_EXTENDED && |
| 714 | extmsg == MSG_EXT_WDTR) { |
| 715 | /* WDTR rejected, initiate sync */ |
| 716 | if ((siop_target->target_c.flags & |
| 717 | TARF_SYNC) == 0) { |
| 718 | siop_target->target_c.status = |
| 719 | TARST_OK; |
| 720 | siop_update_xfer_mode(&sc->sc_c, |
| 721 | target); |
| 722 | /* no table to flush here */ |
| 723 | CALL_SCRIPT(Ent_msgin_ack); |
| 724 | return 1; |
| 725 | } |
| 726 | siop_target->target_c.status = |
| 727 | TARST_SYNC_NEG; |
| 728 | siop_sdtr_msg(&siop_cmd->cmd_c, 0, |
| 729 | sc->sc_c.st_minsync, |
| 730 | sc->sc_c.maxoff); |
| 731 | siop_table_sync(siop_cmd, |
| 732 | BUS_DMASYNC_PREREAD | |
| 733 | BUS_DMASYNC_PREWRITE); |
| 734 | CALL_SCRIPT(Ent_send_msgout); |
| 735 | return 1; |
| 736 | } else if (msg == MSG_EXTENDED && |
| 737 | extmsg == MSG_EXT_SDTR) { |
| 738 | /* sync rejected */ |
| 739 | siop_target->target_c.offset = 0; |
| 740 | siop_target->target_c.period = 0; |
| 741 | siop_target->target_c.status = TARST_OK; |
| 742 | siop_update_xfer_mode(&sc->sc_c, |
| 743 | target); |
| 744 | /* no table to flush here */ |
| 745 | CALL_SCRIPT(Ent_msgin_ack); |
| 746 | return 1; |
| 747 | } else if (msg == MSG_SIMPLE_Q_TAG || |
| 748 | msg == MSG_HEAD_OF_Q_TAG || |
| 749 | msg == MSG_ORDERED_Q_TAG) { |
| 750 | if (siop_handle_qtag_reject( |
| 751 | siop_cmd) == -1) |
| 752 | goto reset; |
| 753 | CALL_SCRIPT(Ent_msgin_ack); |
| 754 | return 1; |
| 755 | } |
| 756 | if (xs) |
| 757 | scsipi_printaddr(xs->xs_periph); |
| 758 | else |
| 759 | printf("%s: " , |
| 760 | device_xname(sc->sc_c.sc_dev)); |
| 761 | if (msg == MSG_EXTENDED) { |
| 762 | printf("scsi message reject, extended " |
| 763 | "message sent was 0x%x\n" , extmsg); |
| 764 | } else { |
| 765 | printf("scsi message reject, message " |
| 766 | "sent was 0x%x\n" , msg); |
| 767 | } |
| 768 | /* no table to flush here */ |
| 769 | CALL_SCRIPT(Ent_msgin_ack); |
| 770 | return 1; |
| 771 | } |
| 772 | if (msgin == MSG_IGN_WIDE_RESIDUE) { |
| 773 | /* use the extmsgdata table to get the second byte */ |
| 774 | siop_cmd->cmd_tables->t_extmsgdata.count = |
| 775 | siop_htoc32(&sc->sc_c, 1); |
| 776 | siop_table_sync(siop_cmd, |
| 777 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 778 | CALL_SCRIPT(Ent_get_extmsgdata); |
| 779 | return 1; |
| 780 | } |
| 781 | if (xs) |
| 782 | scsipi_printaddr(xs->xs_periph); |
| 783 | else |
| 784 | printf("%s: " , device_xname(sc->sc_c.sc_dev)); |
| 785 | printf("unhandled message 0x%x\n" , |
| 786 | siop_cmd->cmd_tables->msg_in[0]); |
| 787 | siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; |
| 788 | siop_cmd->cmd_tables->t_msgout.count = |
| 789 | siop_htoc32(&sc->sc_c, 1); |
| 790 | siop_table_sync(siop_cmd, |
| 791 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 792 | CALL_SCRIPT(Ent_send_msgout); |
| 793 | return 1; |
| 794 | } |
| 795 | case A_int_extmsgin: |
| 796 | #ifdef SIOP_DEBUG_INTR |
| 797 | printf("extended message: msg 0x%x len %d\n" , |
| 798 | siop_cmd->cmd_tables->msg_in[2], |
| 799 | siop_cmd->cmd_tables->msg_in[1]); |
| 800 | #endif |
| 801 | if (siop_cmd->cmd_tables->msg_in[1] > |
| 802 | sizeof(siop_cmd->cmd_tables->msg_in) - 2) |
| 803 | aprint_error_dev(sc->sc_c.sc_dev, |
| 804 | "extended message too big (%d)\n" , |
| 805 | siop_cmd->cmd_tables->msg_in[1]); |
| 806 | siop_cmd->cmd_tables->t_extmsgdata.count = |
| 807 | siop_htoc32(&sc->sc_c, |
| 808 | siop_cmd->cmd_tables->msg_in[1] - 1); |
| 809 | siop_table_sync(siop_cmd, |
| 810 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 811 | CALL_SCRIPT(Ent_get_extmsgdata); |
| 812 | return 1; |
| 813 | case A_int_extmsgdata: |
| 814 | #ifdef SIOP_DEBUG_INTR |
| 815 | { |
| 816 | int i; |
| 817 | printf("extended message: 0x%x, data:" , |
| 818 | siop_cmd->cmd_tables->msg_in[2]); |
| 819 | for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; |
| 820 | i++) |
| 821 | printf(" 0x%x" , |
| 822 | siop_cmd->cmd_tables->msg_in[i]); |
| 823 | printf("\n" ); |
| 824 | } |
| 825 | #endif |
| 826 | if (siop_cmd->cmd_tables->msg_in[0] == |
| 827 | MSG_IGN_WIDE_RESIDUE) { |
| 828 | /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ |
| 829 | if (siop_cmd->cmd_tables->msg_in[3] != 1) |
| 830 | printf("MSG_IGN_WIDE_RESIDUE: " |
| 831 | "bad len %d\n" , |
| 832 | siop_cmd->cmd_tables->msg_in[3]); |
| 833 | switch (siop_iwr(&siop_cmd->cmd_c)) { |
| 834 | case SIOP_NEG_MSGOUT: |
| 835 | siop_table_sync(siop_cmd, |
| 836 | BUS_DMASYNC_PREREAD | |
| 837 | BUS_DMASYNC_PREWRITE); |
| 838 | CALL_SCRIPT(Ent_send_msgout); |
| 839 | return(1); |
| 840 | case SIOP_NEG_ACK: |
| 841 | CALL_SCRIPT(Ent_msgin_ack); |
| 842 | return(1); |
| 843 | default: |
| 844 | panic("invalid retval from " |
| 845 | "siop_iwr()" ); |
| 846 | } |
| 847 | return(1); |
| 848 | } |
| 849 | if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { |
| 850 | switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { |
| 851 | case SIOP_NEG_MSGOUT: |
| 852 | siop_update_scntl3(sc, |
| 853 | siop_cmd->cmd_c.siop_target); |
| 854 | siop_table_sync(siop_cmd, |
| 855 | BUS_DMASYNC_PREREAD | |
| 856 | BUS_DMASYNC_PREWRITE); |
| 857 | CALL_SCRIPT(Ent_send_msgout); |
| 858 | return(1); |
| 859 | case SIOP_NEG_ACK: |
| 860 | siop_update_scntl3(sc, |
| 861 | siop_cmd->cmd_c.siop_target); |
| 862 | CALL_SCRIPT(Ent_msgin_ack); |
| 863 | return(1); |
| 864 | default: |
| 865 | panic("invalid retval from " |
| 866 | "siop_wdtr_neg()" ); |
| 867 | } |
| 868 | return(1); |
| 869 | } |
| 870 | if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { |
| 871 | switch (siop_sdtr_neg(&siop_cmd->cmd_c)) { |
| 872 | case SIOP_NEG_MSGOUT: |
| 873 | siop_update_scntl3(sc, |
| 874 | siop_cmd->cmd_c.siop_target); |
| 875 | siop_table_sync(siop_cmd, |
| 876 | BUS_DMASYNC_PREREAD | |
| 877 | BUS_DMASYNC_PREWRITE); |
| 878 | CALL_SCRIPT(Ent_send_msgout); |
| 879 | return(1); |
| 880 | case SIOP_NEG_ACK: |
| 881 | siop_update_scntl3(sc, |
| 882 | siop_cmd->cmd_c.siop_target); |
| 883 | CALL_SCRIPT(Ent_msgin_ack); |
| 884 | return(1); |
| 885 | default: |
| 886 | panic("invalid retval from " |
| 887 | "siop_sdtr_neg()" ); |
| 888 | } |
| 889 | return(1); |
| 890 | } |
| 891 | /* send a message reject */ |
| 892 | siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; |
| 893 | siop_cmd->cmd_tables->t_msgout.count = |
| 894 | siop_htoc32(&sc->sc_c, 1); |
| 895 | siop_table_sync(siop_cmd, |
| 896 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 897 | CALL_SCRIPT(Ent_send_msgout); |
| 898 | return 1; |
| 899 | case A_int_disc: |
| 900 | INCSTAT(siop_stat_intr_sdp); |
| 901 | offset = bus_space_read_1(sc->sc_c.sc_rt, |
| 902 | sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); |
| 903 | #ifdef SIOP_DEBUG_DR |
| 904 | printf("disconnect offset %d\n" , offset); |
| 905 | #endif |
| 906 | siop_sdp(&siop_cmd->cmd_c, offset); |
| 907 | /* we start again with no offset */ |
| 908 | siop_cmd->saved_offset = SIOP_NOOFFSET; |
| 909 | siop_table_sync(siop_cmd, |
| 910 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 911 | CALL_SCRIPT(Ent_script_sched); |
| 912 | return 1; |
| 913 | case A_int_saveoffset: |
| 914 | INCSTAT(siop_stat_intr_saveoffset); |
| 915 | offset = bus_space_read_1(sc->sc_c.sc_rt, |
| 916 | sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); |
| 917 | #ifdef SIOP_DEBUG_DR |
| 918 | printf("saveoffset offset %d\n" , offset); |
| 919 | #endif |
| 920 | siop_cmd->saved_offset = offset; |
| 921 | CALL_SCRIPT(Ent_script_sched); |
| 922 | return 1; |
| 923 | case A_int_resfail: |
| 924 | printf("reselect failed\n" ); |
| 925 | CALL_SCRIPT(Ent_script_sched); |
| 926 | return 1; |
| 927 | case A_int_done: |
| 928 | if (xs == NULL) { |
| 929 | printf("%s: done without command, DSA=0x%lx\n" , |
| 930 | device_xname(sc->sc_c.sc_dev), |
| 931 | (u_long)siop_cmd->cmd_c.dsa); |
| 932 | siop_cmd->cmd_c.status = CMDST_FREE; |
| 933 | CALL_SCRIPT(Ent_script_sched); |
| 934 | return 1; |
| 935 | } |
| 936 | #ifdef SIOP_DEBUG_INTR |
| 937 | printf("done, DSA=0x%lx target id 0x%x last msg " |
| 938 | "in=0x%x status=0x%x\n" , |
| 939 | (u_long)siop_cmd->cmd_c.dsa, |
| 940 | siop_ctoh32(&sc->sc_c, siop_cmd->cmd_tables->id), |
| 941 | siop_cmd->cmd_tables->msg_in[0], |
| 942 | siop_ctoh32(&sc->sc_c, |
| 943 | siop_cmd->cmd_tables->status)); |
| 944 | #endif |
| 945 | INCSTAT(siop_stat_intr_done); |
| 946 | /* update resid. */ |
| 947 | offset = bus_space_read_1(sc->sc_c.sc_rt, |
| 948 | sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); |
| 949 | /* |
| 950 | * if we got a disconnect between the last data phase |
| 951 | * and the status phase, offset will be 0. In this |
| 952 | * case, siop_cmd->saved_offset will have the proper |
| 953 | * value if it got updated by the controller |
| 954 | */ |
| 955 | if (offset == 0 && |
| 956 | siop_cmd->saved_offset != SIOP_NOOFFSET) |
| 957 | offset = siop_cmd->saved_offset; |
| 958 | siop_update_resid(&siop_cmd->cmd_c, offset); |
| 959 | siop_cmd->cmd_c.status = CMDST_DONE; |
| 960 | goto end; |
| 961 | default: |
| 962 | printf("unknown irqcode %x\n" , irqcode); |
| 963 | if (xs) { |
| 964 | xs->error = XS_SELTIMEOUT; |
| 965 | goto end; |
| 966 | } |
| 967 | goto reset; |
| 968 | } |
| 969 | return 1; |
| 970 | } |
| 971 | /* |
| 972 | * We just should't get there, but on some KVM virtual hosts, |
| 973 | * we do - see PR 48277. |
| 974 | */ |
| 975 | printf("siop_intr: I shouldn't be there !\n" ); |
| 976 | return 1; |
| 977 | |
| 978 | end: |
| 979 | /* |
| 980 | * restart the script now if command completed properly |
| 981 | * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the |
| 982 | * queue |
| 983 | */ |
| 984 | xs->status = siop_ctoh32(&sc->sc_c, siop_cmd->cmd_tables->status); |
| 985 | if (xs->status == SCSI_OK) |
| 986 | CALL_SCRIPT(Ent_script_sched); |
| 987 | else |
| 988 | restart = 1; |
| 989 | siop_lun->siop_tag[tag].active = NULL; |
| 990 | siop_scsicmd_end(siop_cmd); |
| 991 | if (freetarget && siop_target->target_c.status == TARST_PROBING) |
| 992 | siop_del_dev(sc, target, lun); |
| 993 | if (restart) |
| 994 | CALL_SCRIPT(Ent_script_sched); |
| 995 | if (sc->sc_flags & SCF_CHAN_NOSLOT) { |
| 996 | /* a command terminated, so we have free slots now */ |
| 997 | sc->sc_flags &= ~SCF_CHAN_NOSLOT; |
| 998 | scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); |
| 999 | } |
| 1000 | |
| 1001 | return 1; |
| 1002 | } |
| 1003 | |
| 1004 | void |
| 1005 | siop_scsicmd_end(struct siop_cmd *siop_cmd) |
| 1006 | { |
| 1007 | struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; |
| 1008 | struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; |
| 1009 | |
| 1010 | switch(xs->status) { |
| 1011 | case SCSI_OK: |
| 1012 | xs->error = XS_NOERROR; |
| 1013 | break; |
| 1014 | case SCSI_BUSY: |
| 1015 | xs->error = XS_BUSY; |
| 1016 | break; |
| 1017 | case SCSI_CHECK: |
| 1018 | xs->error = XS_BUSY; |
| 1019 | /* remove commands in the queue and scheduler */ |
| 1020 | siop_unqueue(sc, xs->xs_periph->periph_target, |
| 1021 | xs->xs_periph->periph_lun); |
| 1022 | break; |
| 1023 | case SCSI_QUEUE_FULL: |
| 1024 | INCSTAT(siop_stat_intr_qfull); |
| 1025 | #ifdef SIOP_DEBUG |
| 1026 | printf("%s:%d:%d: queue full (tag %d)\n" , |
| 1027 | device_xname(sc->sc_c.sc_dev), |
| 1028 | xs->xs_periph->periph_target, |
| 1029 | xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); |
| 1030 | #endif |
| 1031 | xs->error = XS_BUSY; |
| 1032 | break; |
| 1033 | case SCSI_SIOP_NOCHECK: |
| 1034 | /* |
| 1035 | * don't check status, xs->error is already valid |
| 1036 | */ |
| 1037 | break; |
| 1038 | case SCSI_SIOP_NOSTATUS: |
| 1039 | /* |
| 1040 | * the status byte was not updated, cmd was |
| 1041 | * aborted |
| 1042 | */ |
| 1043 | xs->error = XS_SELTIMEOUT; |
| 1044 | break; |
| 1045 | default: |
| 1046 | scsipi_printaddr(xs->xs_periph); |
| 1047 | printf("invalid status code %d\n" , xs->status); |
| 1048 | xs->error = XS_DRIVER_STUFFUP; |
| 1049 | } |
| 1050 | if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { |
| 1051 | bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, |
| 1052 | 0, siop_cmd->cmd_c.dmamap_data->dm_mapsize, |
| 1053 | (xs->xs_control & XS_CTL_DATA_IN) ? |
| 1054 | BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); |
| 1055 | bus_dmamap_unload(sc->sc_c.sc_dmat, |
| 1056 | siop_cmd->cmd_c.dmamap_data); |
| 1057 | } |
| 1058 | bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); |
| 1059 | if ((xs->xs_control & XS_CTL_POLL) == 0) |
| 1060 | callout_stop(&xs->xs_callout); |
| 1061 | siop_cmd->cmd_c.status = CMDST_FREE; |
| 1062 | TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); |
| 1063 | #if 0 |
| 1064 | if (xs->resid != 0) |
| 1065 | printf("resid %d datalen %d\n" , xs->resid, xs->datalen); |
| 1066 | #endif |
| 1067 | scsipi_done(xs); |
| 1068 | } |
| 1069 | |
| 1070 | void |
| 1071 | siop_unqueue(struct siop_softc *sc, int target, int lun) |
| 1072 | { |
| 1073 | int slot, tag; |
| 1074 | struct siop_cmd *siop_cmd; |
| 1075 | struct siop_lun *siop_lun = |
| 1076 | ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; |
| 1077 | |
| 1078 | /* first make sure to read valid data */ |
| 1079 | siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
| 1080 | |
| 1081 | for (tag = 1; tag < SIOP_NTAG; tag++) { |
| 1082 | /* look for commands in the scheduler, not yet started */ |
| 1083 | if (siop_lun->siop_tag[tag].active == NULL) |
| 1084 | continue; |
| 1085 | siop_cmd = siop_lun->siop_tag[tag].active; |
| 1086 | for (slot = 0; slot <= sc->sc_currschedslot; slot++) { |
| 1087 | if (siop_script_read(sc, |
| 1088 | (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == |
| 1089 | siop_cmd->cmd_c.dsa + |
| 1090 | sizeof(struct siop_common_xfer) + |
| 1091 | Ent_ldsa_select) |
| 1092 | break; |
| 1093 | } |
| 1094 | if (slot > sc->sc_currschedslot) |
| 1095 | continue; /* didn't find it */ |
| 1096 | if (siop_script_read(sc, |
| 1097 | (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) |
| 1098 | continue; /* already started */ |
| 1099 | /* clear the slot */ |
| 1100 | siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, |
| 1101 | 0x80000000); |
| 1102 | /* ask to requeue */ |
| 1103 | siop_cmd->cmd_c.xs->error = XS_REQUEUE; |
| 1104 | siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; |
| 1105 | siop_lun->siop_tag[tag].active = NULL; |
| 1106 | siop_scsicmd_end(siop_cmd); |
| 1107 | } |
| 1108 | /* update sc_currschedslot */ |
| 1109 | sc->sc_currschedslot = 0; |
| 1110 | for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { |
| 1111 | if (siop_script_read(sc, |
| 1112 | (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) |
| 1113 | sc->sc_currschedslot = slot; |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | /* |
| 1118 | * handle a rejected queue tag message: the command will run untagged, |
| 1119 | * has to adjust the reselect script. |
| 1120 | */ |
| 1121 | int |
| 1122 | siop_handle_qtag_reject(struct siop_cmd *siop_cmd) |
| 1123 | { |
| 1124 | struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; |
| 1125 | int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; |
| 1126 | int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; |
| 1127 | int tag = siop_cmd->cmd_tables->msg_out[2]; |
| 1128 | struct siop_lun *siop_lun = |
| 1129 | ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; |
| 1130 | |
| 1131 | #ifdef SIOP_DEBUG |
| 1132 | printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n" , |
| 1133 | device_xname(sc->sc_c.sc_dev), target, lun, tag, |
| 1134 | siop_cmd->cmd_c.tag, |
| 1135 | siop_cmd->cmd_c.status); |
| 1136 | #endif |
| 1137 | |
| 1138 | if (siop_lun->siop_tag[0].active != NULL) { |
| 1139 | printf("%s: untagged command already running for target %d " |
| 1140 | "lun %d (status %d)\n" , device_xname(sc->sc_c.sc_dev), |
| 1141 | target, lun, siop_lun->siop_tag[0].active->cmd_c.status); |
| 1142 | return -1; |
| 1143 | } |
| 1144 | /* clear tag slot */ |
| 1145 | siop_lun->siop_tag[tag].active = NULL; |
| 1146 | /* add command to non-tagged slot */ |
| 1147 | siop_lun->siop_tag[0].active = siop_cmd; |
| 1148 | siop_cmd->cmd_c.tag = 0; |
| 1149 | /* adjust reselect script if there is one */ |
| 1150 | if (siop_lun->siop_tag[0].reseloff > 0) { |
| 1151 | siop_script_write(sc, |
| 1152 | siop_lun->siop_tag[0].reseloff + 1, |
| 1153 | siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + |
| 1154 | Ent_ldsa_reload_dsa); |
| 1155 | siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); |
| 1156 | } |
| 1157 | return 0; |
| 1158 | } |
| 1159 | |
| 1160 | /* |
| 1161 | * handle a bus reset: reset chip, unqueue all active commands, free all |
| 1162 | * target struct and report lossage to upper layer. |
| 1163 | * As the upper layer may requeue immediatly we have to first store |
| 1164 | * all active commands in a temporary queue. |
| 1165 | */ |
| 1166 | void |
| 1167 | siop_handle_reset(struct siop_softc *sc) |
| 1168 | { |
| 1169 | struct siop_cmd *siop_cmd; |
| 1170 | struct siop_lun *siop_lun; |
| 1171 | int target, lun, tag; |
| 1172 | |
| 1173 | /* |
| 1174 | * scsi bus reset. reset the chip and restart |
| 1175 | * the queue. Need to clean up all active commands |
| 1176 | */ |
| 1177 | printf("%s: scsi bus reset\n" , device_xname(sc->sc_c.sc_dev)); |
| 1178 | /* stop, reset and restart the chip */ |
| 1179 | siop_reset(sc); |
| 1180 | if (sc->sc_flags & SCF_CHAN_NOSLOT) { |
| 1181 | /* chip has been reset, all slots are free now */ |
| 1182 | sc->sc_flags &= ~SCF_CHAN_NOSLOT; |
| 1183 | scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); |
| 1184 | } |
| 1185 | /* |
| 1186 | * Process all commands: first commands being executed |
| 1187 | */ |
| 1188 | for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; |
| 1189 | target++) { |
| 1190 | if (sc->sc_c.targets[target] == NULL) |
| 1191 | continue; |
| 1192 | for (lun = 0; lun < 8; lun++) { |
| 1193 | struct siop_target *siop_target = |
| 1194 | (struct siop_target *)sc->sc_c.targets[target]; |
| 1195 | siop_lun = siop_target->siop_lun[lun]; |
| 1196 | if (siop_lun == NULL) |
| 1197 | continue; |
| 1198 | for (tag = 0; tag < |
| 1199 | ((sc->sc_c.targets[target]->flags & TARF_TAG) ? |
| 1200 | SIOP_NTAG : 1); |
| 1201 | tag++) { |
| 1202 | siop_cmd = siop_lun->siop_tag[tag].active; |
| 1203 | if (siop_cmd == NULL) |
| 1204 | continue; |
| 1205 | scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); |
| 1206 | printf("command with tag id %d reset\n" , tag); |
| 1207 | siop_cmd->cmd_c.xs->error = |
| 1208 | (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? |
| 1209 | XS_TIMEOUT : XS_RESET; |
| 1210 | siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; |
| 1211 | siop_lun->siop_tag[tag].active = NULL; |
| 1212 | siop_cmd->cmd_c.status = CMDST_DONE; |
| 1213 | siop_scsicmd_end(siop_cmd); |
| 1214 | } |
| 1215 | } |
| 1216 | sc->sc_c.targets[target]->status = TARST_ASYNC; |
| 1217 | sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; |
| 1218 | sc->sc_c.targets[target]->period = |
| 1219 | sc->sc_c.targets[target]->offset = 0; |
| 1220 | siop_update_xfer_mode(&sc->sc_c, target); |
| 1221 | } |
| 1222 | |
| 1223 | scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); |
| 1224 | } |
| 1225 | |
| 1226 | void |
| 1227 | siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, |
| 1228 | void *arg) |
| 1229 | { |
| 1230 | struct scsipi_xfer *xs; |
| 1231 | struct scsipi_periph *periph; |
| 1232 | struct siop_softc *sc = device_private(chan->chan_adapter->adapt_dev); |
| 1233 | struct siop_cmd *siop_cmd; |
| 1234 | struct siop_target *siop_target; |
| 1235 | int s, error, i; |
| 1236 | int target; |
| 1237 | int lun; |
| 1238 | |
| 1239 | switch (req) { |
| 1240 | case ADAPTER_REQ_RUN_XFER: |
| 1241 | xs = arg; |
| 1242 | periph = xs->xs_periph; |
| 1243 | target = periph->periph_target; |
| 1244 | lun = periph->periph_lun; |
| 1245 | |
| 1246 | s = splbio(); |
| 1247 | #ifdef SIOP_DEBUG_SCHED |
| 1248 | printf("starting cmd for %d:%d\n" , target, lun); |
| 1249 | #endif |
| 1250 | siop_cmd = TAILQ_FIRST(&sc->free_list); |
| 1251 | if (siop_cmd == NULL) { |
| 1252 | xs->error = XS_RESOURCE_SHORTAGE; |
| 1253 | scsipi_done(xs); |
| 1254 | splx(s); |
| 1255 | return; |
| 1256 | } |
| 1257 | TAILQ_REMOVE(&sc->free_list, siop_cmd, next); |
| 1258 | #ifdef DIAGNOSTIC |
| 1259 | if (siop_cmd->cmd_c.status != CMDST_FREE) |
| 1260 | panic("siop_scsicmd: new cmd not free" ); |
| 1261 | #endif |
| 1262 | siop_target = (struct siop_target *)sc->sc_c.targets[target]; |
| 1263 | if (siop_target == NULL) { |
| 1264 | #ifdef SIOP_DEBUG |
| 1265 | printf("%s: alloc siop_target for target %d\n" , |
| 1266 | device_xname(sc->sc_c.sc_dev), target); |
| 1267 | #endif |
| 1268 | sc->sc_c.targets[target] = |
| 1269 | malloc(sizeof(struct siop_target), |
| 1270 | M_DEVBUF, M_NOWAIT|M_ZERO); |
| 1271 | if (sc->sc_c.targets[target] == NULL) { |
| 1272 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1273 | "can't malloc memory for " |
| 1274 | "target %d\n" , target); |
| 1275 | xs->error = XS_RESOURCE_SHORTAGE; |
| 1276 | scsipi_done(xs); |
| 1277 | TAILQ_INSERT_TAIL(&sc->free_list, |
| 1278 | siop_cmd, next); |
| 1279 | splx(s); |
| 1280 | return; |
| 1281 | } |
| 1282 | siop_target = |
| 1283 | (struct siop_target *)sc->sc_c.targets[target]; |
| 1284 | siop_target->target_c.status = TARST_PROBING; |
| 1285 | siop_target->target_c.flags = 0; |
| 1286 | siop_target->target_c.id = |
| 1287 | sc->sc_c.clock_div << 24; /* scntl3 */ |
| 1288 | siop_target->target_c.id |= target << 16; /* id */ |
| 1289 | /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ |
| 1290 | |
| 1291 | /* get a lun switch script */ |
| 1292 | siop_target->lunsw = siop_get_lunsw(sc); |
| 1293 | if (siop_target->lunsw == NULL) { |
| 1294 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1295 | "can't alloc lunsw for target %d\n" , |
| 1296 | target); |
| 1297 | xs->error = XS_RESOURCE_SHORTAGE; |
| 1298 | scsipi_done(xs); |
| 1299 | TAILQ_INSERT_TAIL(&sc->free_list, |
| 1300 | siop_cmd, next); |
| 1301 | splx(s); |
| 1302 | return; |
| 1303 | } |
| 1304 | for (i=0; i < 8; i++) |
| 1305 | siop_target->siop_lun[i] = NULL; |
| 1306 | siop_add_reselsw(sc, target); |
| 1307 | } |
| 1308 | if (siop_target->siop_lun[lun] == NULL) { |
| 1309 | siop_target->siop_lun[lun] = |
| 1310 | malloc(sizeof(struct siop_lun), M_DEVBUF, |
| 1311 | M_NOWAIT|M_ZERO); |
| 1312 | if (siop_target->siop_lun[lun] == NULL) { |
| 1313 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1314 | "can't alloc siop_lun for " |
| 1315 | "target %d lun %d\n" , |
| 1316 | target, lun); |
| 1317 | xs->error = XS_RESOURCE_SHORTAGE; |
| 1318 | scsipi_done(xs); |
| 1319 | TAILQ_INSERT_TAIL(&sc->free_list, |
| 1320 | siop_cmd, next); |
| 1321 | splx(s); |
| 1322 | return; |
| 1323 | } |
| 1324 | } |
| 1325 | siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; |
| 1326 | siop_cmd->cmd_c.xs = xs; |
| 1327 | siop_cmd->cmd_c.flags = 0; |
| 1328 | siop_cmd->cmd_c.status = CMDST_READY; |
| 1329 | |
| 1330 | /* load the DMA maps */ |
| 1331 | error = bus_dmamap_load(sc->sc_c.sc_dmat, |
| 1332 | siop_cmd->cmd_c.dmamap_cmd, |
| 1333 | xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); |
| 1334 | if (error) { |
| 1335 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1336 | "unable to load cmd DMA map: %d\n" , |
| 1337 | error); |
| 1338 | xs->error = (error == EAGAIN) ? |
| 1339 | XS_RESOURCE_SHORTAGE : XS_DRIVER_STUFFUP; |
| 1340 | scsipi_done(xs); |
| 1341 | siop_cmd->cmd_c.status = CMDST_FREE; |
| 1342 | TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); |
| 1343 | splx(s); |
| 1344 | return; |
| 1345 | } |
| 1346 | if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { |
| 1347 | error = bus_dmamap_load(sc->sc_c.sc_dmat, |
| 1348 | siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, |
| 1349 | NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | |
| 1350 | ((xs->xs_control & XS_CTL_DATA_IN) ? |
| 1351 | BUS_DMA_READ : BUS_DMA_WRITE)); |
| 1352 | if (error) { |
| 1353 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1354 | "unable to load data DMA map: %d\n" , |
| 1355 | error); |
| 1356 | xs->error = (error == EAGAIN) ? |
| 1357 | XS_RESOURCE_SHORTAGE : XS_DRIVER_STUFFUP; |
| 1358 | scsipi_done(xs); |
| 1359 | bus_dmamap_unload(sc->sc_c.sc_dmat, |
| 1360 | siop_cmd->cmd_c.dmamap_cmd); |
| 1361 | siop_cmd->cmd_c.status = CMDST_FREE; |
| 1362 | TAILQ_INSERT_TAIL(&sc->free_list, |
| 1363 | siop_cmd, next); |
| 1364 | splx(s); |
| 1365 | return; |
| 1366 | } |
| 1367 | bus_dmamap_sync(sc->sc_c.sc_dmat, |
| 1368 | siop_cmd->cmd_c.dmamap_data, 0, |
| 1369 | siop_cmd->cmd_c.dmamap_data->dm_mapsize, |
| 1370 | (xs->xs_control & XS_CTL_DATA_IN) ? |
| 1371 | BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); |
| 1372 | } |
| 1373 | bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, |
| 1374 | siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, |
| 1375 | BUS_DMASYNC_PREWRITE); |
| 1376 | |
| 1377 | if (xs->xs_tag_type) { |
| 1378 | /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ |
| 1379 | siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; |
| 1380 | } else { |
| 1381 | siop_cmd->cmd_c.tag = 0; |
| 1382 | } |
| 1383 | siop_setuptables(&siop_cmd->cmd_c); |
| 1384 | siop_cmd->saved_offset = SIOP_NOOFFSET; |
| 1385 | siop_table_sync(siop_cmd, |
| 1386 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 1387 | siop_start(sc, siop_cmd); |
| 1388 | if (xs->xs_control & XS_CTL_POLL) { |
| 1389 | /* poll for command completion */ |
| 1390 | while ((xs->xs_status & XS_STS_DONE) == 0) { |
| 1391 | delay(1000); |
| 1392 | siop_intr(sc); |
| 1393 | } |
| 1394 | } |
| 1395 | splx(s); |
| 1396 | return; |
| 1397 | |
| 1398 | case ADAPTER_REQ_GROW_RESOURCES: |
| 1399 | #ifdef SIOP_DEBUG |
| 1400 | printf("%s grow resources (%d)\n" , |
| 1401 | device_xname(sc->sc_c.sc_dev), |
| 1402 | sc->sc_c.sc_adapt.adapt_openings); |
| 1403 | #endif |
| 1404 | siop_morecbd(sc); |
| 1405 | return; |
| 1406 | |
| 1407 | case ADAPTER_REQ_SET_XFER_MODE: |
| 1408 | { |
| 1409 | struct scsipi_xfer_mode *xm = arg; |
| 1410 | if (sc->sc_c.targets[xm->xm_target] == NULL) |
| 1411 | return; |
| 1412 | s = splbio(); |
| 1413 | if (xm->xm_mode & PERIPH_CAP_TQING) |
| 1414 | sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; |
| 1415 | if ((xm->xm_mode & PERIPH_CAP_WIDE16) && |
| 1416 | (sc->sc_c.features & SF_BUS_WIDE)) |
| 1417 | sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; |
| 1418 | if (xm->xm_mode & PERIPH_CAP_SYNC) |
| 1419 | sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; |
| 1420 | if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || |
| 1421 | sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) |
| 1422 | sc->sc_c.targets[xm->xm_target]->status = |
| 1423 | TARST_ASYNC; |
| 1424 | |
| 1425 | for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { |
| 1426 | if (scsipi_lookup_periph(chan, |
| 1427 | xm->xm_target, lun) != NULL) { |
| 1428 | /* allocate a lun sw entry for this device */ |
| 1429 | siop_add_dev(sc, xm->xm_target, lun); |
| 1430 | } |
| 1431 | } |
| 1432 | |
| 1433 | splx(s); |
| 1434 | } |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | static void |
| 1439 | siop_start(struct siop_softc *sc, struct siop_cmd *siop_cmd) |
| 1440 | { |
| 1441 | struct siop_lun *siop_lun; |
| 1442 | struct siop_xfer *siop_xfer; |
| 1443 | uint32_t dsa; |
| 1444 | int timeout; |
| 1445 | int target, lun, slot; |
| 1446 | |
| 1447 | /* |
| 1448 | * first make sure to read valid data |
| 1449 | */ |
| 1450 | siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
| 1451 | |
| 1452 | /* |
| 1453 | * The queue management here is a bit tricky: the script always looks |
| 1454 | * at the slot from first to last, so if we always use the first |
| 1455 | * free slot commands can stay at the tail of the queue ~forever. |
| 1456 | * The algorithm used here is to restart from the head when we know |
| 1457 | * that the queue is empty, and only add commands after the last one. |
| 1458 | * When we're at the end of the queue wait for the script to clear it. |
| 1459 | * The best thing to do here would be to implement a circular queue, |
| 1460 | * but using only 53c720 features this can be "interesting". |
| 1461 | * A mid-way solution could be to implement 2 queues and swap orders. |
| 1462 | */ |
| 1463 | slot = sc->sc_currschedslot; |
| 1464 | /* |
| 1465 | * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is |
| 1466 | * free. As this is the last used slot, all previous slots are free, |
| 1467 | * we can restart from 0. |
| 1468 | */ |
| 1469 | if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == |
| 1470 | 0x80000000) { |
| 1471 | slot = sc->sc_currschedslot = 0; |
| 1472 | } else { |
| 1473 | slot++; |
| 1474 | } |
| 1475 | target = siop_cmd->cmd_c.xs->xs_periph->periph_target; |
| 1476 | lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; |
| 1477 | siop_lun = |
| 1478 | ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; |
| 1479 | /* if non-tagged command active, panic: this shouldn't happen */ |
| 1480 | if (siop_lun->siop_tag[0].active != NULL) { |
| 1481 | panic("siop_start: tagged cmd while untagged running" ); |
| 1482 | } |
| 1483 | #ifdef DIAGNOSTIC |
| 1484 | /* sanity check the tag if needed */ |
| 1485 | if (siop_cmd->cmd_c.flags & CMDFL_TAG) { |
| 1486 | if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) |
| 1487 | panic("siop_start: tag not free" ); |
| 1488 | if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { |
| 1489 | scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); |
| 1490 | printf(": tag id %d\n" , siop_cmd->cmd_c.tag); |
| 1491 | panic("siop_start: invalid tag id" ); |
| 1492 | } |
| 1493 | } |
| 1494 | #endif |
| 1495 | /* |
| 1496 | * find a free scheduler slot and load it. |
| 1497 | */ |
| 1498 | for (; slot < SIOP_NSLOTS; slot++) { |
| 1499 | /* |
| 1500 | * If cmd if 0x80000000 the slot is free |
| 1501 | */ |
| 1502 | if (siop_script_read(sc, |
| 1503 | (Ent_script_sched_slot0 / 4) + slot * 2) == |
| 1504 | 0x80000000) |
| 1505 | break; |
| 1506 | } |
| 1507 | if (slot == SIOP_NSLOTS) { |
| 1508 | /* |
| 1509 | * no more free slot, no need to continue. freeze the queue |
| 1510 | * and requeue this command. |
| 1511 | */ |
| 1512 | scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); |
| 1513 | sc->sc_flags |= SCF_CHAN_NOSLOT; |
| 1514 | siop_cmd->cmd_c.xs->error = XS_REQUEUE; |
| 1515 | siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; |
| 1516 | siop_scsicmd_end(siop_cmd); |
| 1517 | return; |
| 1518 | } |
| 1519 | #ifdef SIOP_DEBUG_SCHED |
| 1520 | printf("using slot %d for DSA 0x%lx\n" , slot, |
| 1521 | (u_long)siop_cmd->cmd_c.dsa); |
| 1522 | #endif |
| 1523 | /* mark command as active */ |
| 1524 | if (siop_cmd->cmd_c.status == CMDST_READY) |
| 1525 | siop_cmd->cmd_c.status = CMDST_ACTIVE; |
| 1526 | else |
| 1527 | panic("siop_start: bad status" ); |
| 1528 | siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; |
| 1529 | /* patch scripts with DSA addr */ |
| 1530 | dsa = siop_cmd->cmd_c.dsa; |
| 1531 | /* first reselect switch, if we have an entry */ |
| 1532 | if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) |
| 1533 | siop_script_write(sc, |
| 1534 | siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, |
| 1535 | dsa + sizeof(struct siop_common_xfer) + |
| 1536 | Ent_ldsa_reload_dsa); |
| 1537 | /* CMD script: MOVE MEMORY addr */ |
| 1538 | siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; |
| 1539 | siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = |
| 1540 | siop_htoc32(&sc->sc_c, sc->sc_c.sc_scriptaddr + |
| 1541 | Ent_script_sched_slot0 + slot * 8); |
| 1542 | siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); |
| 1543 | /* scheduler slot: JUMP ldsa_select */ |
| 1544 | siop_script_write(sc, |
| 1545 | (Ent_script_sched_slot0 / 4) + slot * 2 + 1, |
| 1546 | dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); |
| 1547 | /* handle timeout */ |
| 1548 | if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { |
| 1549 | /* start exire timer */ |
| 1550 | timeout = mstohz(siop_cmd->cmd_c.xs->timeout); |
| 1551 | if (timeout == 0) |
| 1552 | timeout = 1; |
| 1553 | callout_reset( &siop_cmd->cmd_c.xs->xs_callout, |
| 1554 | timeout, siop_timeout, siop_cmd); |
| 1555 | } |
| 1556 | /* |
| 1557 | * Change JUMP cmd so that this slot will be handled |
| 1558 | */ |
| 1559 | siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, |
| 1560 | 0x80080000); |
| 1561 | sc->sc_currschedslot = slot; |
| 1562 | |
| 1563 | /* make sure SCRIPT processor will read valid data */ |
| 1564 | siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 1565 | /* Signal script it has some work to do */ |
| 1566 | bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, |
| 1567 | SIOP_ISTAT, ISTAT_SIGP); |
| 1568 | /* and wait for IRQ */ |
| 1569 | } |
| 1570 | |
| 1571 | void |
| 1572 | siop_timeout(void *v) |
| 1573 | { |
| 1574 | struct siop_cmd *siop_cmd = v; |
| 1575 | struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; |
| 1576 | int s; |
| 1577 | |
| 1578 | scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); |
| 1579 | printf("command timeout, CDB: " ); |
| 1580 | scsipi_print_cdb(siop_cmd->cmd_c.xs->cmd); |
| 1581 | printf("\n" ); |
| 1582 | |
| 1583 | s = splbio(); |
| 1584 | /* reset the scsi bus */ |
| 1585 | siop_resetbus(&sc->sc_c); |
| 1586 | |
| 1587 | /* deactivate callout */ |
| 1588 | callout_stop(&siop_cmd->cmd_c.xs->xs_callout); |
| 1589 | /* mark command as being timed out; siop_intr will handle it */ |
| 1590 | /* |
| 1591 | * mark command has being timed out and just return; |
| 1592 | * the bus reset will generate an interrupt, |
| 1593 | * it will be handled in siop_intr() |
| 1594 | */ |
| 1595 | siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; |
| 1596 | splx(s); |
| 1597 | } |
| 1598 | |
| 1599 | void |
| 1600 | siop_dump_script(struct siop_softc *sc) |
| 1601 | { |
| 1602 | int i; |
| 1603 | |
| 1604 | for (i = 0; i < PAGE_SIZE / 4; i += 2) { |
| 1605 | printf("0x%04x: 0x%08x 0x%08x" , i * 4, |
| 1606 | siop_script_read(sc, i), |
| 1607 | siop_script_read(sc, i + 1)); |
| 1608 | if ((siop_script_read(sc, i) & 0xe0000000) == 0xc0000000) { |
| 1609 | i++; |
| 1610 | printf(" 0x%08x" , siop_script_read(sc, i + 1)); |
| 1611 | } |
| 1612 | printf("\n" ); |
| 1613 | } |
| 1614 | } |
| 1615 | |
| 1616 | void |
| 1617 | siop_morecbd(struct siop_softc *sc) |
| 1618 | { |
| 1619 | int error, off, i, j, s; |
| 1620 | bus_dma_segment_t seg; |
| 1621 | int rseg; |
| 1622 | struct siop_cbd *newcbd; |
| 1623 | struct siop_xfer *xfer; |
| 1624 | bus_addr_t dsa; |
| 1625 | uint32_t *scr; |
| 1626 | |
| 1627 | /* allocate a new list head */ |
| 1628 | newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); |
| 1629 | if (newcbd == NULL) { |
| 1630 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1631 | "can't allocate memory for command descriptors head\n" ); |
| 1632 | return; |
| 1633 | } |
| 1634 | |
| 1635 | /* allocate cmd list */ |
| 1636 | newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, |
| 1637 | M_DEVBUF, M_NOWAIT|M_ZERO); |
| 1638 | if (newcbd->cmds == NULL) { |
| 1639 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1640 | "can't allocate memory for command descriptors\n" ); |
| 1641 | goto bad3; |
| 1642 | } |
| 1643 | error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, |
| 1644 | 0, &seg, 1, &rseg, BUS_DMA_NOWAIT); |
| 1645 | if (error) { |
| 1646 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1647 | "unable to allocate cbd DMA memory, error = %d\n" , |
| 1648 | error); |
| 1649 | goto bad2; |
| 1650 | } |
| 1651 | error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, |
| 1652 | (void **)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); |
| 1653 | if (error) { |
| 1654 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1655 | "unable to map cbd DMA memory, error = %d\n" , |
| 1656 | error); |
| 1657 | goto bad2; |
| 1658 | } |
| 1659 | error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, |
| 1660 | BUS_DMA_NOWAIT, &newcbd->xferdma); |
| 1661 | if (error) { |
| 1662 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1663 | "unable to create cbd DMA map, error = %d\n" , |
| 1664 | error); |
| 1665 | goto bad1; |
| 1666 | } |
| 1667 | error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, |
| 1668 | newcbd->xfers, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); |
| 1669 | if (error) { |
| 1670 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1671 | "unable to load cbd DMA map, error = %d\n" , |
| 1672 | error); |
| 1673 | goto bad0; |
| 1674 | } |
| 1675 | #ifdef SIOP_DEBUG |
| 1676 | printf("%s: alloc newcdb at PHY addr 0x%lx\n" , |
| 1677 | device_xname(sc->sc_c.sc_dev), |
| 1678 | (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); |
| 1679 | #endif |
| 1680 | off = (sc->sc_c.features & SF_CHIP_BE) ? 3 : 0; |
| 1681 | for (i = 0; i < SIOP_NCMDPB; i++) { |
| 1682 | error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, |
| 1683 | MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
| 1684 | &newcbd->cmds[i].cmd_c.dmamap_data); |
| 1685 | if (error) { |
| 1686 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1687 | "unable to create data DMA map for cbd: " |
| 1688 | "error %d\n" , error); |
| 1689 | goto bad0; |
| 1690 | } |
| 1691 | error = bus_dmamap_create(sc->sc_c.sc_dmat, |
| 1692 | sizeof(struct scsipi_generic), 1, |
| 1693 | sizeof(struct scsipi_generic), 0, |
| 1694 | BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
| 1695 | &newcbd->cmds[i].cmd_c.dmamap_cmd); |
| 1696 | if (error) { |
| 1697 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1698 | "unable to create cmd DMA map for cbd %d\n" , error); |
| 1699 | goto bad0; |
| 1700 | } |
| 1701 | newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; |
| 1702 | newcbd->cmds[i].siop_cbdp = newcbd; |
| 1703 | xfer = &newcbd->xfers[i]; |
| 1704 | newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; |
| 1705 | memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); |
| 1706 | dsa = newcbd->xferdma->dm_segs[0].ds_addr + |
| 1707 | i * sizeof(struct siop_xfer); |
| 1708 | newcbd->cmds[i].cmd_c.dsa = dsa; |
| 1709 | newcbd->cmds[i].cmd_c.status = CMDST_FREE; |
| 1710 | xfer->siop_tables.t_msgout.count= siop_htoc32(&sc->sc_c, 1); |
| 1711 | xfer->siop_tables.t_msgout.addr = siop_htoc32(&sc->sc_c, dsa); |
| 1712 | xfer->siop_tables.t_msgin.count= siop_htoc32(&sc->sc_c, 1); |
| 1713 | xfer->siop_tables.t_msgin.addr = siop_htoc32(&sc->sc_c, |
| 1714 | dsa + offsetof(struct siop_common_xfer, msg_in)); |
| 1715 | xfer->siop_tables.t_extmsgin.count= siop_htoc32(&sc->sc_c, 2); |
| 1716 | xfer->siop_tables.t_extmsgin.addr = siop_htoc32(&sc->sc_c, |
| 1717 | dsa + offsetof(struct siop_common_xfer, msg_in) + 1); |
| 1718 | xfer->siop_tables.t_extmsgdata.addr = siop_htoc32(&sc->sc_c, |
| 1719 | dsa + offsetof(struct siop_common_xfer, msg_in) + 3); |
| 1720 | xfer->siop_tables.t_status.count= siop_htoc32(&sc->sc_c, 1); |
| 1721 | xfer->siop_tables.t_status.addr = siop_htoc32(&sc->sc_c, |
| 1722 | dsa + offsetof(struct siop_common_xfer, status) + off); |
| 1723 | /* The select/reselect script */ |
| 1724 | scr = &xfer->resel[0]; |
| 1725 | for (j = 0; j < __arraycount(load_dsa); j++) |
| 1726 | scr[j] = siop_htoc32(&sc->sc_c, load_dsa[j]); |
| 1727 | /* |
| 1728 | * 0x78000000 is a 'move data8 to reg'. data8 is the second |
| 1729 | * octet, reg offset is the third. |
| 1730 | */ |
| 1731 | scr[Ent_rdsa0 / 4] = siop_htoc32(&sc->sc_c, |
| 1732 | 0x78100000 | ((dsa & 0x000000ff) << 8)); |
| 1733 | scr[Ent_rdsa1 / 4] = siop_htoc32(&sc->sc_c, |
| 1734 | 0x78110000 | ( dsa & 0x0000ff00 )); |
| 1735 | scr[Ent_rdsa2 / 4] = siop_htoc32(&sc->sc_c, |
| 1736 | 0x78120000 | ((dsa & 0x00ff0000) >> 8)); |
| 1737 | scr[Ent_rdsa3 / 4] = siop_htoc32(&sc->sc_c, |
| 1738 | 0x78130000 | ((dsa & 0xff000000) >> 16)); |
| 1739 | scr[E_ldsa_abs_reselected_Used[0]] = siop_htoc32(&sc->sc_c, |
| 1740 | sc->sc_c.sc_scriptaddr + Ent_reselected); |
| 1741 | scr[E_ldsa_abs_reselect_Used[0]] = siop_htoc32(&sc->sc_c, |
| 1742 | sc->sc_c.sc_scriptaddr + Ent_reselect); |
| 1743 | scr[E_ldsa_abs_selected_Used[0]] = siop_htoc32(&sc->sc_c, |
| 1744 | sc->sc_c.sc_scriptaddr + Ent_selected); |
| 1745 | scr[E_ldsa_abs_data_Used[0]] = siop_htoc32(&sc->sc_c, |
| 1746 | dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_data); |
| 1747 | /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ |
| 1748 | scr[Ent_ldsa_data / 4] = siop_htoc32(&sc->sc_c, 0x80000000); |
| 1749 | s = splbio(); |
| 1750 | TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); |
| 1751 | splx(s); |
| 1752 | #ifdef SIOP_DEBUG |
| 1753 | printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n" , i, |
| 1754 | siop_ctoh32(&sc->sc_c, |
| 1755 | newcbd->cmds[i].cmd_tables->t_msgin.addr), |
| 1756 | siop_ctoh32(&sc->sc_c, |
| 1757 | newcbd->cmds[i].cmd_tables->t_msgout.addr), |
| 1758 | siop_ctoh32(&sc->sc_c, |
| 1759 | newcbd->cmds[i].cmd_tables->t_status.addr)); |
| 1760 | #endif |
| 1761 | } |
| 1762 | s = splbio(); |
| 1763 | TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); |
| 1764 | sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; |
| 1765 | splx(s); |
| 1766 | return; |
| 1767 | bad0: |
| 1768 | bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); |
| 1769 | bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); |
| 1770 | bad1: |
| 1771 | bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); |
| 1772 | bad2: |
| 1773 | free(newcbd->cmds, M_DEVBUF); |
| 1774 | bad3: |
| 1775 | free(newcbd, M_DEVBUF); |
| 1776 | } |
| 1777 | |
| 1778 | struct siop_lunsw * |
| 1779 | siop_get_lunsw(struct siop_softc *sc) |
| 1780 | { |
| 1781 | struct siop_lunsw *lunsw; |
| 1782 | int i; |
| 1783 | |
| 1784 | if (sc->script_free_lo + __arraycount(lun_switch) >= sc->script_free_hi) |
| 1785 | return NULL; |
| 1786 | lunsw = TAILQ_FIRST(&sc->lunsw_list); |
| 1787 | if (lunsw != NULL) { |
| 1788 | #ifdef SIOP_DEBUG |
| 1789 | printf("siop_get_lunsw got lunsw at offset %d\n" , |
| 1790 | lunsw->lunsw_off); |
| 1791 | #endif |
| 1792 | TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); |
| 1793 | return lunsw; |
| 1794 | } |
| 1795 | lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); |
| 1796 | if (lunsw == NULL) |
| 1797 | return NULL; |
| 1798 | #ifdef SIOP_DEBUG |
| 1799 | printf("allocating lunsw at offset %d\n" , sc->script_free_lo); |
| 1800 | #endif |
| 1801 | if (sc->sc_c.features & SF_CHIP_RAM) { |
| 1802 | bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
| 1803 | sc->script_free_lo * 4, lun_switch, |
| 1804 | __arraycount(lun_switch)); |
| 1805 | bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, |
| 1806 | (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, |
| 1807 | sc->sc_c.sc_scriptaddr + Ent_lunsw_return); |
| 1808 | } else { |
| 1809 | for (i = 0; i < __arraycount(lun_switch); i++) |
| 1810 | sc->sc_c.sc_script[sc->script_free_lo + i] = |
| 1811 | siop_htoc32(&sc->sc_c, lun_switch[i]); |
| 1812 | sc->sc_c.sc_script[ |
| 1813 | sc->script_free_lo + E_abs_lunsw_return_Used[0]] = |
| 1814 | siop_htoc32(&sc->sc_c, |
| 1815 | sc->sc_c.sc_scriptaddr + Ent_lunsw_return); |
| 1816 | } |
| 1817 | lunsw->lunsw_off = sc->script_free_lo; |
| 1818 | lunsw->lunsw_size = __arraycount(lun_switch); |
| 1819 | sc->script_free_lo += lunsw->lunsw_size; |
| 1820 | siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 1821 | return lunsw; |
| 1822 | } |
| 1823 | |
| 1824 | void |
| 1825 | siop_add_reselsw(struct siop_softc *sc, int target) |
| 1826 | { |
| 1827 | int i, j; |
| 1828 | struct siop_target *siop_target; |
| 1829 | struct siop_lun *siop_lun; |
| 1830 | |
| 1831 | siop_target = (struct siop_target *)sc->sc_c.targets[target]; |
| 1832 | /* |
| 1833 | * add an entry to resel switch |
| 1834 | */ |
| 1835 | siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); |
| 1836 | for (i = 0; i < 15; i++) { |
| 1837 | siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; |
| 1838 | if ((siop_script_read(sc, siop_target->reseloff) & 0xff) |
| 1839 | == 0xff) { /* it's free */ |
| 1840 | #ifdef SIOP_DEBUG |
| 1841 | printf("siop: target %d slot %d offset %d\n" , |
| 1842 | target, i, siop_target->reseloff); |
| 1843 | #endif |
| 1844 | /* JUMP abs_foo, IF target | 0x80; */ |
| 1845 | siop_script_write(sc, siop_target->reseloff, |
| 1846 | 0x800c0080 | target); |
| 1847 | siop_script_write(sc, siop_target->reseloff + 1, |
| 1848 | sc->sc_c.sc_scriptaddr + |
| 1849 | siop_target->lunsw->lunsw_off * 4 + |
| 1850 | Ent_lun_switch_entry); |
| 1851 | break; |
| 1852 | } |
| 1853 | } |
| 1854 | if (i == 15) /* no free slot, shouldn't happen */ |
| 1855 | panic("siop: resel switch full" ); |
| 1856 | |
| 1857 | sc->sc_ntargets++; |
| 1858 | for (i = 0; i < 8; i++) { |
| 1859 | siop_lun = siop_target->siop_lun[i]; |
| 1860 | if (siop_lun == NULL) |
| 1861 | continue; |
| 1862 | if (siop_lun->reseloff > 0) { |
| 1863 | siop_lun->reseloff = 0; |
| 1864 | for (j = 0; j < SIOP_NTAG; j++) |
| 1865 | siop_lun->siop_tag[j].reseloff = 0; |
| 1866 | siop_add_dev(sc, target, i); |
| 1867 | } |
| 1868 | } |
| 1869 | siop_update_scntl3(sc, sc->sc_c.targets[target]); |
| 1870 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
| 1871 | } |
| 1872 | |
| 1873 | void |
| 1874 | siop_update_scntl3(struct siop_softc *sc, |
| 1875 | struct siop_common_target *_siop_target) |
| 1876 | { |
| 1877 | struct siop_target *siop_target = (struct siop_target *)_siop_target; |
| 1878 | |
| 1879 | /* MOVE target->id >> 24 TO SCNTL3 */ |
| 1880 | siop_script_write(sc, |
| 1881 | siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), |
| 1882 | 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); |
| 1883 | /* MOVE target->id >> 8 TO SXFER */ |
| 1884 | siop_script_write(sc, |
| 1885 | siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, |
| 1886 | 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); |
| 1887 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
| 1888 | } |
| 1889 | |
| 1890 | void |
| 1891 | siop_add_dev(struct siop_softc *sc, int target, int lun) |
| 1892 | { |
| 1893 | struct siop_lunsw *lunsw; |
| 1894 | struct siop_target *siop_target = |
| 1895 | (struct siop_target *)sc->sc_c.targets[target]; |
| 1896 | struct siop_lun *siop_lun = siop_target->siop_lun[lun]; |
| 1897 | int i, ntargets; |
| 1898 | |
| 1899 | if (siop_lun->reseloff > 0) |
| 1900 | return; |
| 1901 | lunsw = siop_target->lunsw; |
| 1902 | if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { |
| 1903 | /* |
| 1904 | * can't extend this slot. Probably not worth trying to deal |
| 1905 | * with this case |
| 1906 | */ |
| 1907 | #ifdef SIOP_DEBUG |
| 1908 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1909 | "%d:%d: can't allocate a lun sw slot\n" , target, lun); |
| 1910 | #endif |
| 1911 | return; |
| 1912 | } |
| 1913 | /* count how many free targets we still have to probe */ |
| 1914 | ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; |
| 1915 | |
| 1916 | /* |
| 1917 | * we need 8 bytes for the lun sw additional entry, and |
| 1918 | * eventually sizeof(tag_switch) for the tag switch entry. |
| 1919 | * Keep enough free space for the free targets that could be |
| 1920 | * probed later. |
| 1921 | */ |
| 1922 | if (sc->script_free_lo + 2 + |
| 1923 | (ntargets * __arraycount(lun_switch)) >= |
| 1924 | ((siop_target->target_c.flags & TARF_TAG) ? |
| 1925 | sc->script_free_hi - __arraycount(tag_switch) : |
| 1926 | sc->script_free_hi)) { |
| 1927 | /* |
| 1928 | * not enough space, probably not worth dealing with it. |
| 1929 | * We can hold 13 tagged-queuing capable devices in the 4k RAM. |
| 1930 | */ |
| 1931 | #ifdef SIOP_DEBUG |
| 1932 | aprint_error_dev(sc->sc_c.sc_dev, |
| 1933 | "%d:%d: not enough memory for a lun sw slot\n" , |
| 1934 | target, lun); |
| 1935 | #endif |
| 1936 | return; |
| 1937 | } |
| 1938 | #ifdef SIOP_DEBUG |
| 1939 | printf("%s:%d:%d: allocate lun sw entry\n" , |
| 1940 | device_xname(sc->sc_c.sc_dev), target, lun); |
| 1941 | #endif |
| 1942 | /* INT int_resellun */ |
| 1943 | siop_script_write(sc, sc->script_free_lo, 0x98080000); |
| 1944 | siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); |
| 1945 | /* Now the slot entry: JUMP abs_foo, IF lun */ |
| 1946 | siop_script_write(sc, sc->script_free_lo - 2, |
| 1947 | 0x800c0000 | lun); |
| 1948 | siop_script_write(sc, sc->script_free_lo - 1, 0); |
| 1949 | siop_lun->reseloff = sc->script_free_lo - 2; |
| 1950 | lunsw->lunsw_size += 2; |
| 1951 | sc->script_free_lo += 2; |
| 1952 | if (siop_target->target_c.flags & TARF_TAG) { |
| 1953 | /* we need a tag switch */ |
| 1954 | sc->script_free_hi -= __arraycount(tag_switch); |
| 1955 | if (sc->sc_c.features & SF_CHIP_RAM) { |
| 1956 | bus_space_write_region_4(sc->sc_c.sc_ramt, |
| 1957 | sc->sc_c.sc_ramh, |
| 1958 | sc->script_free_hi * 4, tag_switch, |
| 1959 | __arraycount(tag_switch)); |
| 1960 | } else { |
| 1961 | for(i = 0; i < __arraycount(tag_switch); i++) { |
| 1962 | sc->sc_c.sc_script[sc->script_free_hi + i] = |
| 1963 | siop_htoc32(&sc->sc_c, tag_switch[i]); |
| 1964 | } |
| 1965 | } |
| 1966 | siop_script_write(sc, |
| 1967 | siop_lun->reseloff + 1, |
| 1968 | sc->sc_c.sc_scriptaddr + sc->script_free_hi * 4 + |
| 1969 | Ent_tag_switch_entry); |
| 1970 | |
| 1971 | for (i = 0; i < SIOP_NTAG; i++) { |
| 1972 | siop_lun->siop_tag[i].reseloff = |
| 1973 | sc->script_free_hi + (Ent_resel_tag0 / 4) + i * 2; |
| 1974 | } |
| 1975 | } else { |
| 1976 | /* non-tag case; just work with the lun switch */ |
| 1977 | siop_lun->siop_tag[0].reseloff = |
| 1978 | siop_target->siop_lun[lun]->reseloff; |
| 1979 | } |
| 1980 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
| 1981 | } |
| 1982 | |
| 1983 | void |
| 1984 | siop_del_dev(struct siop_softc *sc, int target, int lun) |
| 1985 | { |
| 1986 | int i; |
| 1987 | struct siop_target *siop_target; |
| 1988 | |
| 1989 | #ifdef SIOP_DEBUG |
| 1990 | printf("%s:%d:%d: free lun sw entry\n" , |
| 1991 | device_xname(sc->sc_c.sc_dev), target, lun); |
| 1992 | #endif |
| 1993 | if (sc->sc_c.targets[target] == NULL) |
| 1994 | return; |
| 1995 | siop_target = (struct siop_target *)sc->sc_c.targets[target]; |
| 1996 | free(siop_target->siop_lun[lun], M_DEVBUF); |
| 1997 | siop_target->siop_lun[lun] = NULL; |
| 1998 | /* XXX compact sw entry too ? */ |
| 1999 | /* check if we can free the whole target */ |
| 2000 | for (i = 0; i < 8; i++) { |
| 2001 | if (siop_target->siop_lun[i] != NULL) |
| 2002 | return; |
| 2003 | } |
| 2004 | #ifdef SIOP_DEBUG |
| 2005 | printf("%s: free siop_target for target %d lun %d lunsw offset %d\n" , |
| 2006 | device_xname(sc->sc_c.sc_dev), target, lun, |
| 2007 | siop_target->lunsw->lunsw_off); |
| 2008 | #endif |
| 2009 | /* |
| 2010 | * nothing here, free the target struct and resel |
| 2011 | * switch entry |
| 2012 | */ |
| 2013 | siop_script_write(sc, siop_target->reseloff, 0x800c00ff); |
| 2014 | siop_script_sync(sc, BUS_DMASYNC_PREWRITE); |
| 2015 | TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); |
| 2016 | free(sc->sc_c.targets[target], M_DEVBUF); |
| 2017 | sc->sc_c.targets[target] = NULL; |
| 2018 | sc->sc_ntargets--; |
| 2019 | } |
| 2020 | |
| 2021 | #ifdef SIOP_STATS |
| 2022 | void |
| 2023 | siop_printstats(void) |
| 2024 | { |
| 2025 | |
| 2026 | printf("siop_stat_intr %d\n" , siop_stat_intr); |
| 2027 | printf("siop_stat_intr_shortxfer %d\n" , siop_stat_intr_shortxfer); |
| 2028 | printf("siop_stat_intr_xferdisc %d\n" , siop_stat_intr_xferdisc); |
| 2029 | printf("siop_stat_intr_sdp %d\n" , siop_stat_intr_sdp); |
| 2030 | printf("siop_stat_intr_saveoffset %d\n" , siop_stat_intr_saveoffset); |
| 2031 | printf("siop_stat_intr_done %d\n" , siop_stat_intr_done); |
| 2032 | printf("siop_stat_intr_lunresel %d\n" , siop_stat_intr_lunresel); |
| 2033 | printf("siop_stat_intr_qfull %d\n" , siop_stat_intr_qfull); |
| 2034 | } |
| 2035 | #endif |
| 2036 | |