| 1 | /* $NetBSD: mly.c,v 1.50 2016/07/07 06:55:41 msaitoh Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2001 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Andrew Doran, Thor Lancelot Simon, and Eric Haszlakiewicz. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /*- |
| 33 | * Copyright (c) 2000, 2001 Michael Smith |
| 34 | * Copyright (c) 2000 BSDi |
| 35 | * All rights reserved. |
| 36 | * |
| 37 | * Redistribution and use in source and binary forms, with or without |
| 38 | * modification, are permitted provided that the following conditions |
| 39 | * are met: |
| 40 | * 1. Redistributions of source code must retain the above copyright |
| 41 | * notice, this list of conditions and the following disclaimer. |
| 42 | * 2. Redistributions in binary form must reproduce the above copyright |
| 43 | * notice, this list of conditions and the following disclaimer in the |
| 44 | * documentation and/or other materials provided with the distribution. |
| 45 | * |
| 46 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 47 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 49 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 50 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 51 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 52 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 53 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 54 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 55 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 56 | * SUCH DAMAGE. |
| 57 | * |
| 58 | * from FreeBSD: mly.c,v 1.8 2001/07/14 00:12:22 msmith Exp |
| 59 | */ |
| 60 | |
| 61 | /* |
| 62 | * Driver for the Mylex AcceleRAID and eXtremeRAID family with v6 firmware. |
| 63 | * |
| 64 | * TODO: |
| 65 | * |
| 66 | * o Make mly->mly_btl a hash, then MLY_BTL_RESCAN becomes a SIMPLEQ. |
| 67 | * o Handle FC and multiple LUNs. |
| 68 | * o Fix mmbox usage. |
| 69 | * o Fix transfer speed fudge. |
| 70 | */ |
| 71 | |
| 72 | #include <sys/cdefs.h> |
| 73 | __KERNEL_RCSID(0, "$NetBSD: mly.c,v 1.50 2016/07/07 06:55:41 msaitoh Exp $" ); |
| 74 | |
| 75 | #include <sys/param.h> |
| 76 | #include <sys/systm.h> |
| 77 | #include <sys/device.h> |
| 78 | #include <sys/kernel.h> |
| 79 | #include <sys/queue.h> |
| 80 | #include <sys/buf.h> |
| 81 | #include <sys/endian.h> |
| 82 | #include <sys/conf.h> |
| 83 | #include <sys/malloc.h> |
| 84 | #include <sys/ioctl.h> |
| 85 | #include <sys/scsiio.h> |
| 86 | #include <sys/kthread.h> |
| 87 | #include <sys/kauth.h> |
| 88 | |
| 89 | #include <sys/bus.h> |
| 90 | |
| 91 | #include <dev/scsipi/scsi_all.h> |
| 92 | #include <dev/scsipi/scsipi_all.h> |
| 93 | #include <dev/scsipi/scsiconf.h> |
| 94 | |
| 95 | #include <dev/pci/pcireg.h> |
| 96 | #include <dev/pci/pcivar.h> |
| 97 | #include <dev/pci/pcidevs.h> |
| 98 | |
| 99 | #include <dev/pci/mlyreg.h> |
| 100 | #include <dev/pci/mlyio.h> |
| 101 | #include <dev/pci/mlyvar.h> |
| 102 | #include <dev/pci/mly_tables.h> |
| 103 | |
| 104 | static void mly_attach(device_t, device_t, void *); |
| 105 | static int mly_match(device_t, cfdata_t, void *); |
| 106 | static const struct mly_ident *mly_find_ident(struct pci_attach_args *); |
| 107 | static int mly_fwhandshake(struct mly_softc *); |
| 108 | static int mly_flush(struct mly_softc *); |
| 109 | static int mly_intr(void *); |
| 110 | static void mly_shutdown(void *); |
| 111 | |
| 112 | static int mly_alloc_ccbs(struct mly_softc *); |
| 113 | static void mly_check_event(struct mly_softc *); |
| 114 | static void mly_complete_event(struct mly_softc *, struct mly_ccb *); |
| 115 | static void mly_complete_rescan(struct mly_softc *, struct mly_ccb *); |
| 116 | static int mly_dmamem_alloc(struct mly_softc *, int, bus_dmamap_t *, |
| 117 | void **, bus_addr_t *, bus_dma_segment_t *); |
| 118 | static void mly_dmamem_free(struct mly_softc *, int, bus_dmamap_t, |
| 119 | void *, bus_dma_segment_t *); |
| 120 | static int mly_enable_mmbox(struct mly_softc *); |
| 121 | static void mly_fetch_event(struct mly_softc *); |
| 122 | static int mly_get_controllerinfo(struct mly_softc *); |
| 123 | static int mly_get_eventstatus(struct mly_softc *); |
| 124 | static int mly_ioctl(struct mly_softc *, struct mly_cmd_ioctl *, |
| 125 | void **, size_t, void *, size_t *); |
| 126 | static void mly_padstr(char *, const char *, int); |
| 127 | static void mly_process_event(struct mly_softc *, struct mly_event *); |
| 128 | static void mly_release_ccbs(struct mly_softc *); |
| 129 | static int mly_scan_btl(struct mly_softc *, int, int); |
| 130 | static void mly_scan_channel(struct mly_softc *, int); |
| 131 | static void mly_thread(void *); |
| 132 | |
| 133 | static int mly_ccb_alloc(struct mly_softc *, struct mly_ccb **); |
| 134 | static void mly_ccb_complete(struct mly_softc *, struct mly_ccb *); |
| 135 | static void mly_ccb_enqueue(struct mly_softc *, struct mly_ccb *); |
| 136 | static void mly_ccb_free(struct mly_softc *, struct mly_ccb *); |
| 137 | static int mly_ccb_map(struct mly_softc *, struct mly_ccb *); |
| 138 | static int mly_ccb_poll(struct mly_softc *, struct mly_ccb *, int); |
| 139 | static int mly_ccb_submit(struct mly_softc *, struct mly_ccb *); |
| 140 | static void mly_ccb_unmap(struct mly_softc *, struct mly_ccb *); |
| 141 | static int mly_ccb_wait(struct mly_softc *, struct mly_ccb *, int); |
| 142 | |
| 143 | static void mly_get_xfer_mode(struct mly_softc *, int, |
| 144 | struct scsipi_xfer_mode *); |
| 145 | static void mly_scsipi_complete(struct mly_softc *, struct mly_ccb *); |
| 146 | static int mly_scsipi_ioctl(struct scsipi_channel *, u_long, void *, |
| 147 | int, struct proc *); |
| 148 | static void mly_scsipi_minphys(struct buf *); |
| 149 | static void mly_scsipi_request(struct scsipi_channel *, |
| 150 | scsipi_adapter_req_t, void *); |
| 151 | |
| 152 | static int mly_user_command(struct mly_softc *, struct mly_user_command *); |
| 153 | static int mly_user_health(struct mly_softc *, struct mly_user_health *); |
| 154 | |
| 155 | extern struct cfdriver mly_cd; |
| 156 | |
| 157 | CFATTACH_DECL_NEW(mly, sizeof(struct mly_softc), |
| 158 | mly_match, mly_attach, NULL, NULL); |
| 159 | |
| 160 | dev_type_open(mlyopen); |
| 161 | dev_type_close(mlyclose); |
| 162 | dev_type_ioctl(mlyioctl); |
| 163 | |
| 164 | const struct cdevsw mly_cdevsw = { |
| 165 | .d_open = mlyopen, |
| 166 | .d_close = mlyclose, |
| 167 | .d_read = noread, |
| 168 | .d_write = nowrite, |
| 169 | .d_ioctl = mlyioctl, |
| 170 | .d_stop = nostop, |
| 171 | .d_tty = notty, |
| 172 | .d_poll = nopoll, |
| 173 | .d_mmap = nommap, |
| 174 | .d_kqfilter = nokqfilter, |
| 175 | .d_discard = nodiscard, |
| 176 | .d_flag = D_OTHER |
| 177 | }; |
| 178 | |
| 179 | static struct mly_ident { |
| 180 | u_short vendor; |
| 181 | u_short product; |
| 182 | u_short subvendor; |
| 183 | u_short subproduct; |
| 184 | int hwif; |
| 185 | const char *desc; |
| 186 | } const mly_ident[] = { |
| 187 | { |
| 188 | PCI_VENDOR_MYLEX, |
| 189 | PCI_PRODUCT_MYLEX_EXTREMERAID, |
| 190 | PCI_VENDOR_MYLEX, |
| 191 | 0x0040, |
| 192 | MLY_HWIF_STRONGARM, |
| 193 | "eXtremeRAID 2000" |
| 194 | }, |
| 195 | { |
| 196 | PCI_VENDOR_MYLEX, |
| 197 | PCI_PRODUCT_MYLEX_EXTREMERAID, |
| 198 | PCI_VENDOR_MYLEX, |
| 199 | 0x0030, |
| 200 | MLY_HWIF_STRONGARM, |
| 201 | "eXtremeRAID 3000" |
| 202 | }, |
| 203 | { |
| 204 | PCI_VENDOR_MYLEX, |
| 205 | PCI_PRODUCT_MYLEX_ACCELERAID, |
| 206 | PCI_VENDOR_MYLEX, |
| 207 | 0x0050, |
| 208 | MLY_HWIF_I960RX, |
| 209 | "AcceleRAID 352" |
| 210 | }, |
| 211 | { |
| 212 | PCI_VENDOR_MYLEX, |
| 213 | PCI_PRODUCT_MYLEX_ACCELERAID, |
| 214 | PCI_VENDOR_MYLEX, |
| 215 | 0x0052, |
| 216 | MLY_HWIF_I960RX, |
| 217 | "AcceleRAID 170" |
| 218 | }, |
| 219 | { |
| 220 | PCI_VENDOR_MYLEX, |
| 221 | PCI_PRODUCT_MYLEX_ACCELERAID, |
| 222 | PCI_VENDOR_MYLEX, |
| 223 | 0x0054, |
| 224 | MLY_HWIF_I960RX, |
| 225 | "AcceleRAID 160" |
| 226 | }, |
| 227 | }; |
| 228 | |
| 229 | static void *mly_sdh; |
| 230 | |
| 231 | /* |
| 232 | * Try to find a `mly_ident' entry corresponding to this board. |
| 233 | */ |
| 234 | static const struct mly_ident * |
| 235 | mly_find_ident(struct pci_attach_args *pa) |
| 236 | { |
| 237 | const struct mly_ident *mpi, *maxmpi; |
| 238 | pcireg_t reg; |
| 239 | |
| 240 | mpi = mly_ident; |
| 241 | maxmpi = mpi + sizeof(mly_ident) / sizeof(mly_ident[0]); |
| 242 | |
| 243 | if (PCI_CLASS(pa->pa_class) == PCI_CLASS_I2O) |
| 244 | return (NULL); |
| 245 | |
| 246 | for (; mpi < maxmpi; mpi++) { |
| 247 | if (PCI_VENDOR(pa->pa_id) != mpi->vendor || |
| 248 | PCI_PRODUCT(pa->pa_id) != mpi->product) |
| 249 | continue; |
| 250 | |
| 251 | if (mpi->subvendor == 0x0000) |
| 252 | return (mpi); |
| 253 | |
| 254 | reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); |
| 255 | |
| 256 | if (PCI_VENDOR(reg) == mpi->subvendor && |
| 257 | PCI_PRODUCT(reg) == mpi->subproduct) |
| 258 | return (mpi); |
| 259 | } |
| 260 | |
| 261 | return (NULL); |
| 262 | } |
| 263 | |
| 264 | /* |
| 265 | * Match a supported board. |
| 266 | */ |
| 267 | static int |
| 268 | mly_match(device_t parent, cfdata_t cfdata, void *aux) |
| 269 | { |
| 270 | |
| 271 | return (mly_find_ident(aux) != NULL); |
| 272 | } |
| 273 | |
| 274 | /* |
| 275 | * Attach a supported board. |
| 276 | */ |
| 277 | static void |
| 278 | mly_attach(device_t parent, device_t self, void *aux) |
| 279 | { |
| 280 | struct pci_attach_args *pa; |
| 281 | struct mly_softc *mly; |
| 282 | struct mly_ioctl_getcontrollerinfo *mi; |
| 283 | const struct mly_ident *ident; |
| 284 | pci_chipset_tag_t pc; |
| 285 | pci_intr_handle_t ih; |
| 286 | bus_space_handle_t memh, ioh; |
| 287 | bus_space_tag_t memt, iot; |
| 288 | pcireg_t reg; |
| 289 | const char *intrstr; |
| 290 | int ior, memr, i, rv, state; |
| 291 | struct scsipi_adapter *adapt; |
| 292 | struct scsipi_channel *chan; |
| 293 | char intrbuf[PCI_INTRSTR_LEN]; |
| 294 | |
| 295 | mly = device_private(self); |
| 296 | mly->mly_dv = self; |
| 297 | pa = aux; |
| 298 | pc = pa->pa_pc; |
| 299 | ident = mly_find_ident(pa); |
| 300 | state = 0; |
| 301 | |
| 302 | mly->mly_dmat = pa->pa_dmat; |
| 303 | mly->mly_hwif = ident->hwif; |
| 304 | |
| 305 | printf(": Mylex %s\n" , ident->desc); |
| 306 | |
| 307 | /* |
| 308 | * Map the PCI register window. |
| 309 | */ |
| 310 | memr = -1; |
| 311 | ior = -1; |
| 312 | |
| 313 | for (i = 0x10; i <= 0x14; i += 4) { |
| 314 | reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i); |
| 315 | |
| 316 | if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) { |
| 317 | if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0) |
| 318 | ior = i; |
| 319 | } else { |
| 320 | if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0) |
| 321 | memr = i; |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | if (memr != -1) |
| 326 | if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0, |
| 327 | &memt, &memh, NULL, NULL)) |
| 328 | memr = -1; |
| 329 | if (ior != -1) |
| 330 | if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0, |
| 331 | &iot, &ioh, NULL, NULL)) |
| 332 | ior = -1; |
| 333 | |
| 334 | if (memr != -1) { |
| 335 | mly->mly_iot = memt; |
| 336 | mly->mly_ioh = memh; |
| 337 | } else if (ior != -1) { |
| 338 | mly->mly_iot = iot; |
| 339 | mly->mly_ioh = ioh; |
| 340 | } else { |
| 341 | aprint_error_dev(self, "can't map i/o or memory space\n" ); |
| 342 | return; |
| 343 | } |
| 344 | |
| 345 | /* |
| 346 | * Enable the device. |
| 347 | */ |
| 348 | reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); |
| 349 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, |
| 350 | reg | PCI_COMMAND_MASTER_ENABLE); |
| 351 | |
| 352 | /* |
| 353 | * Map and establish the interrupt. |
| 354 | */ |
| 355 | if (pci_intr_map(pa, &ih)) { |
| 356 | aprint_error_dev(self, "can't map interrupt\n" ); |
| 357 | return; |
| 358 | } |
| 359 | intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); |
| 360 | mly->mly_ih = pci_intr_establish(pc, ih, IPL_BIO, mly_intr, mly); |
| 361 | if (mly->mly_ih == NULL) { |
| 362 | aprint_error_dev(self, "can't establish interrupt" ); |
| 363 | if (intrstr != NULL) |
| 364 | aprint_error(" at %s" , intrstr); |
| 365 | aprint_error("\n" ); |
| 366 | return; |
| 367 | } |
| 368 | |
| 369 | if (intrstr != NULL) |
| 370 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
| 371 | |
| 372 | /* |
| 373 | * Take care of interface-specific tasks. |
| 374 | */ |
| 375 | switch (mly->mly_hwif) { |
| 376 | case MLY_HWIF_I960RX: |
| 377 | mly->mly_doorbell_true = 0x00; |
| 378 | mly->mly_cmd_mailbox = MLY_I960RX_COMMAND_MAILBOX; |
| 379 | mly->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; |
| 380 | mly->mly_idbr = MLY_I960RX_IDBR; |
| 381 | mly->mly_odbr = MLY_I960RX_ODBR; |
| 382 | mly->mly_error_status = MLY_I960RX_ERROR_STATUS; |
| 383 | mly->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; |
| 384 | mly->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; |
| 385 | break; |
| 386 | |
| 387 | case MLY_HWIF_STRONGARM: |
| 388 | mly->mly_doorbell_true = 0xff; |
| 389 | mly->mly_cmd_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; |
| 390 | mly->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; |
| 391 | mly->mly_idbr = MLY_STRONGARM_IDBR; |
| 392 | mly->mly_odbr = MLY_STRONGARM_ODBR; |
| 393 | mly->mly_error_status = MLY_STRONGARM_ERROR_STATUS; |
| 394 | mly->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; |
| 395 | mly->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; |
| 396 | break; |
| 397 | } |
| 398 | |
| 399 | /* |
| 400 | * Allocate and map the scatter/gather lists. |
| 401 | */ |
| 402 | rv = mly_dmamem_alloc(mly, MLY_SGL_SIZE * MLY_MAX_CCBS, |
| 403 | &mly->mly_sg_dmamap, (void **)&mly->mly_sg, |
| 404 | &mly->mly_sg_busaddr, &mly->mly_sg_seg); |
| 405 | if (rv) { |
| 406 | printf("%s: unable to allocate S/G maps\n" , |
| 407 | device_xname(self)); |
| 408 | goto bad; |
| 409 | } |
| 410 | state++; |
| 411 | |
| 412 | /* |
| 413 | * Allocate and map the memory mailbox. |
| 414 | */ |
| 415 | rv = mly_dmamem_alloc(mly, sizeof(struct mly_mmbox), |
| 416 | &mly->mly_mmbox_dmamap, (void **)&mly->mly_mmbox, |
| 417 | &mly->mly_mmbox_busaddr, &mly->mly_mmbox_seg); |
| 418 | if (rv) { |
| 419 | aprint_error_dev(self, "unable to allocate mailboxes\n" ); |
| 420 | goto bad; |
| 421 | } |
| 422 | state++; |
| 423 | |
| 424 | /* |
| 425 | * Initialise per-controller queues. |
| 426 | */ |
| 427 | SLIST_INIT(&mly->mly_ccb_free); |
| 428 | SIMPLEQ_INIT(&mly->mly_ccb_queue); |
| 429 | |
| 430 | /* |
| 431 | * Disable interrupts before we start talking to the controller. |
| 432 | */ |
| 433 | mly_outb(mly, mly->mly_interrupt_mask, MLY_INTERRUPT_MASK_DISABLE); |
| 434 | |
| 435 | /* |
| 436 | * Wait for the controller to come ready, handshaking with the |
| 437 | * firmware if required. This is typically only necessary on |
| 438 | * platforms where the controller BIOS does not run. |
| 439 | */ |
| 440 | if (mly_fwhandshake(mly)) { |
| 441 | aprint_error_dev(self, "unable to bring controller online\n" ); |
| 442 | goto bad; |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * Allocate initial command buffers, obtain controller feature |
| 447 | * information, and then reallocate command buffers, since we'll |
| 448 | * know how many we want. |
| 449 | */ |
| 450 | if (mly_alloc_ccbs(mly)) { |
| 451 | aprint_error_dev(self, "unable to allocate CCBs\n" ); |
| 452 | goto bad; |
| 453 | } |
| 454 | state++; |
| 455 | if (mly_get_controllerinfo(mly)) { |
| 456 | aprint_error_dev(self, "unable to retrieve controller info\n" ); |
| 457 | goto bad; |
| 458 | } |
| 459 | mly_release_ccbs(mly); |
| 460 | if (mly_alloc_ccbs(mly)) { |
| 461 | aprint_error_dev(self, "unable to allocate CCBs\n" ); |
| 462 | state--; |
| 463 | goto bad; |
| 464 | } |
| 465 | |
| 466 | /* |
| 467 | * Get the current event counter for health purposes, populate the |
| 468 | * initial health status buffer. |
| 469 | */ |
| 470 | if (mly_get_eventstatus(mly)) { |
| 471 | aprint_error_dev(self, "unable to retrieve event status\n" ); |
| 472 | goto bad; |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * Enable memory-mailbox mode. |
| 477 | */ |
| 478 | if (mly_enable_mmbox(mly)) { |
| 479 | aprint_error_dev(self, "unable to enable memory mailbox\n" ); |
| 480 | goto bad; |
| 481 | } |
| 482 | |
| 483 | /* |
| 484 | * Print a little information about the controller. |
| 485 | */ |
| 486 | mi = mly->mly_controllerinfo; |
| 487 | |
| 488 | printf("%s: %d physical channel%s, firmware %d.%02d-%d-%02d " |
| 489 | "(%02d%02d%02d%02d), %dMB RAM\n" , device_xname(self), |
| 490 | mi->physical_channels_present, |
| 491 | (mi->physical_channels_present) > 1 ? "s" : "" , |
| 492 | mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, |
| 493 | mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, |
| 494 | le16toh(mi->memory_size)); |
| 495 | |
| 496 | /* |
| 497 | * Register our `shutdownhook'. |
| 498 | */ |
| 499 | if (mly_sdh == NULL) |
| 500 | shutdownhook_establish(mly_shutdown, NULL); |
| 501 | |
| 502 | /* |
| 503 | * Clear any previous BTL information. For each bus that scsipi |
| 504 | * wants to scan, we'll receive the SCBUSIOLLSCAN ioctl and retrieve |
| 505 | * all BTL info at that point. |
| 506 | */ |
| 507 | memset(&mly->mly_btl, 0, sizeof(mly->mly_btl)); |
| 508 | |
| 509 | mly->mly_nchans = mly->mly_controllerinfo->physical_channels_present + |
| 510 | mly->mly_controllerinfo->virtual_channels_present; |
| 511 | |
| 512 | /* |
| 513 | * Attach to scsipi. |
| 514 | */ |
| 515 | adapt = &mly->mly_adapt; |
| 516 | memset(adapt, 0, sizeof(*adapt)); |
| 517 | adapt->adapt_dev = self; |
| 518 | adapt->adapt_nchannels = mly->mly_nchans; |
| 519 | adapt->adapt_openings = mly->mly_ncmds - MLY_CCBS_RESV; |
| 520 | adapt->adapt_max_periph = mly->mly_ncmds - MLY_CCBS_RESV; |
| 521 | adapt->adapt_request = mly_scsipi_request; |
| 522 | adapt->adapt_minphys = mly_scsipi_minphys; |
| 523 | adapt->adapt_ioctl = mly_scsipi_ioctl; |
| 524 | |
| 525 | for (i = 0; i < mly->mly_nchans; i++) { |
| 526 | chan = &mly->mly_chans[i]; |
| 527 | memset(chan, 0, sizeof(*chan)); |
| 528 | chan->chan_adapter = adapt; |
| 529 | chan->chan_bustype = &scsi_bustype; |
| 530 | chan->chan_channel = i; |
| 531 | chan->chan_ntargets = MLY_MAX_TARGETS; |
| 532 | chan->chan_nluns = MLY_MAX_LUNS; |
| 533 | chan->chan_id = mly->mly_controllerparam->initiator_id; |
| 534 | chan->chan_flags = SCSIPI_CHAN_NOSETTLE; |
| 535 | config_found(self, chan, scsiprint); |
| 536 | } |
| 537 | |
| 538 | /* |
| 539 | * Now enable interrupts... |
| 540 | */ |
| 541 | mly_outb(mly, mly->mly_interrupt_mask, MLY_INTERRUPT_MASK_ENABLE); |
| 542 | |
| 543 | /* |
| 544 | * Finally, create our monitoring thread. |
| 545 | */ |
| 546 | mly->mly_state |= MLY_STATE_INITOK; |
| 547 | rv = kthread_create(PRI_NONE, 0, NULL, mly_thread, mly, |
| 548 | &mly->mly_thread, "%s" , device_xname(self)); |
| 549 | if (rv != 0) |
| 550 | aprint_error_dev(self, "unable to create thread (%d)\n" , rv); |
| 551 | return; |
| 552 | |
| 553 | bad: |
| 554 | if (state > 2) |
| 555 | mly_release_ccbs(mly); |
| 556 | if (state > 1) |
| 557 | mly_dmamem_free(mly, sizeof(struct mly_mmbox), |
| 558 | mly->mly_mmbox_dmamap, (void *)mly->mly_mmbox, |
| 559 | &mly->mly_mmbox_seg); |
| 560 | if (state > 0) |
| 561 | mly_dmamem_free(mly, MLY_SGL_SIZE * MLY_MAX_CCBS, |
| 562 | mly->mly_sg_dmamap, (void *)mly->mly_sg, |
| 563 | &mly->mly_sg_seg); |
| 564 | } |
| 565 | |
| 566 | /* |
| 567 | * Scan all possible devices on the specified channel. |
| 568 | */ |
| 569 | static void |
| 570 | mly_scan_channel(struct mly_softc *mly, int bus) |
| 571 | { |
| 572 | int s, target; |
| 573 | |
| 574 | for (target = 0; target < MLY_MAX_TARGETS; target++) { |
| 575 | s = splbio(); |
| 576 | if (!mly_scan_btl(mly, bus, target)) { |
| 577 | tsleep(&mly->mly_btl[bus][target], PRIBIO, "mlyscan" , |
| 578 | 0); |
| 579 | } |
| 580 | splx(s); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | /* |
| 585 | * Shut down all configured `mly' devices. |
| 586 | */ |
| 587 | static void |
| 588 | mly_shutdown(void *cookie) |
| 589 | { |
| 590 | struct mly_softc *mly; |
| 591 | int i; |
| 592 | |
| 593 | for (i = 0; i < mly_cd.cd_ndevs; i++) { |
| 594 | if ((mly = device_lookup_private(&mly_cd, i)) == NULL) |
| 595 | continue; |
| 596 | |
| 597 | if (mly_flush(mly)) |
| 598 | aprint_error_dev(mly->mly_dv, "unable to flush cache\n" ); |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | /* |
| 603 | * Fill in the mly_controllerinfo and mly_controllerparam fields in the |
| 604 | * softc. |
| 605 | */ |
| 606 | static int |
| 607 | mly_get_controllerinfo(struct mly_softc *mly) |
| 608 | { |
| 609 | struct mly_cmd_ioctl mci; |
| 610 | int rv; |
| 611 | |
| 612 | /* |
| 613 | * Build the getcontrollerinfo ioctl and send it. |
| 614 | */ |
| 615 | memset(&mci, 0, sizeof(mci)); |
| 616 | mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; |
| 617 | rv = mly_ioctl(mly, &mci, (void **)&mly->mly_controllerinfo, |
| 618 | sizeof(*mly->mly_controllerinfo), NULL, NULL); |
| 619 | if (rv != 0) |
| 620 | return (rv); |
| 621 | |
| 622 | /* |
| 623 | * Build the getcontrollerparameter ioctl and send it. |
| 624 | */ |
| 625 | memset(&mci, 0, sizeof(mci)); |
| 626 | mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; |
| 627 | rv = mly_ioctl(mly, &mci, (void **)&mly->mly_controllerparam, |
| 628 | sizeof(*mly->mly_controllerparam), NULL, NULL); |
| 629 | |
| 630 | return (rv); |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * Rescan a device, possibly as a consequence of getting an event which |
| 635 | * suggests that it may have changed. Must be called with interrupts |
| 636 | * blocked. |
| 637 | */ |
| 638 | static int |
| 639 | mly_scan_btl(struct mly_softc *mly, int bus, int target) |
| 640 | { |
| 641 | struct mly_ccb *mc; |
| 642 | struct mly_cmd_ioctl *mci; |
| 643 | int rv; |
| 644 | |
| 645 | if (target == mly->mly_controllerparam->initiator_id) { |
| 646 | mly->mly_btl[bus][target].mb_flags = MLY_BTL_PROTECTED; |
| 647 | return (EIO); |
| 648 | } |
| 649 | |
| 650 | /* Don't re-scan if a scan is already in progress. */ |
| 651 | if ((mly->mly_btl[bus][target].mb_flags & MLY_BTL_SCANNING) != 0) |
| 652 | return (EBUSY); |
| 653 | |
| 654 | /* Get a command. */ |
| 655 | if ((rv = mly_ccb_alloc(mly, &mc)) != 0) |
| 656 | return (rv); |
| 657 | |
| 658 | /* Set up the data buffer. */ |
| 659 | mc->mc_data = malloc(sizeof(union mly_devinfo), |
| 660 | M_DEVBUF, M_NOWAIT|M_ZERO); |
| 661 | |
| 662 | mc->mc_flags |= MLY_CCB_DATAIN; |
| 663 | mc->mc_complete = mly_complete_rescan; |
| 664 | |
| 665 | /* |
| 666 | * Build the ioctl. |
| 667 | */ |
| 668 | mci = (struct mly_cmd_ioctl *)&mc->mc_packet->ioctl; |
| 669 | mci->opcode = MDACMD_IOCTL; |
| 670 | mci->timeout = 30 | MLY_TIMEOUT_SECONDS; |
| 671 | memset(&mci->param, 0, sizeof(mci->param)); |
| 672 | |
| 673 | if (MLY_BUS_IS_VIRTUAL(mly, bus)) { |
| 674 | mc->mc_length = sizeof(struct mly_ioctl_getlogdevinfovalid); |
| 675 | mci->data_size = htole32(mc->mc_length); |
| 676 | mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; |
| 677 | _lto3l(MLY_LOGADDR(0, MLY_LOGDEV_ID(mly, bus, target)), |
| 678 | mci->addr); |
| 679 | } else { |
| 680 | mc->mc_length = sizeof(struct mly_ioctl_getphysdevinfovalid); |
| 681 | mci->data_size = htole32(mc->mc_length); |
| 682 | mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; |
| 683 | _lto3l(MLY_PHYADDR(0, bus, target, 0), mci->addr); |
| 684 | } |
| 685 | |
| 686 | /* |
| 687 | * Dispatch the command. |
| 688 | */ |
| 689 | if ((rv = mly_ccb_map(mly, mc)) != 0) { |
| 690 | free(mc->mc_data, M_DEVBUF); |
| 691 | mly_ccb_free(mly, mc); |
| 692 | return(rv); |
| 693 | } |
| 694 | |
| 695 | mly->mly_btl[bus][target].mb_flags |= MLY_BTL_SCANNING; |
| 696 | mly_ccb_enqueue(mly, mc); |
| 697 | return (0); |
| 698 | } |
| 699 | |
| 700 | /* |
| 701 | * Handle the completion of a rescan operation. |
| 702 | */ |
| 703 | static void |
| 704 | mly_complete_rescan(struct mly_softc *mly, struct mly_ccb *mc) |
| 705 | { |
| 706 | struct mly_ioctl_getlogdevinfovalid *ldi; |
| 707 | struct mly_ioctl_getphysdevinfovalid *pdi; |
| 708 | struct mly_cmd_ioctl *mci; |
| 709 | struct mly_btl btl, *btlp; |
| 710 | struct scsipi_xfer_mode xm; |
| 711 | int bus, target, rescan; |
| 712 | u_int tmp; |
| 713 | |
| 714 | mly_ccb_unmap(mly, mc); |
| 715 | |
| 716 | /* |
| 717 | * Recover the bus and target from the command. We need these even |
| 718 | * in the case where we don't have a useful response. |
| 719 | */ |
| 720 | mci = (struct mly_cmd_ioctl *)&mc->mc_packet->ioctl; |
| 721 | tmp = _3ltol(mci->addr); |
| 722 | rescan = 0; |
| 723 | |
| 724 | if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { |
| 725 | bus = MLY_LOGDEV_BUS(mly, MLY_LOGADDR_DEV(tmp)); |
| 726 | target = MLY_LOGDEV_TARGET(mly, MLY_LOGADDR_DEV(tmp)); |
| 727 | } else { |
| 728 | bus = MLY_PHYADDR_CHANNEL(tmp); |
| 729 | target = MLY_PHYADDR_TARGET(tmp); |
| 730 | } |
| 731 | |
| 732 | btlp = &mly->mly_btl[bus][target]; |
| 733 | |
| 734 | /* The default result is 'no device'. */ |
| 735 | memset(&btl, 0, sizeof(btl)); |
| 736 | btl.mb_flags = MLY_BTL_PROTECTED; |
| 737 | |
| 738 | /* If the rescan completed OK, we have possibly-new BTL data. */ |
| 739 | if (mc->mc_status != 0) |
| 740 | goto out; |
| 741 | |
| 742 | if (mc->mc_length == sizeof(*ldi)) { |
| 743 | ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; |
| 744 | tmp = le32toh(ldi->logical_device_number); |
| 745 | |
| 746 | if (MLY_LOGDEV_BUS(mly, tmp) != bus || |
| 747 | MLY_LOGDEV_TARGET(mly, tmp) != target) { |
| 748 | #ifdef MLYDEBUG |
| 749 | printf("%s: WARNING: BTL rescan (logical) for %d:%d " |
| 750 | "returned data for %d:%d instead\n" , |
| 751 | device_xname(mly->mly_dv), bus, target, |
| 752 | MLY_LOGDEV_BUS(mly, tmp), |
| 753 | MLY_LOGDEV_TARGET(mly, tmp)); |
| 754 | #endif |
| 755 | goto out; |
| 756 | } |
| 757 | |
| 758 | btl.mb_flags = MLY_BTL_LOGICAL | MLY_BTL_TQING; |
| 759 | btl.mb_type = ldi->raid_level; |
| 760 | btl.mb_state = ldi->state; |
| 761 | } else if (mc->mc_length == sizeof(*pdi)) { |
| 762 | pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; |
| 763 | |
| 764 | if (pdi->channel != bus || pdi->target != target) { |
| 765 | #ifdef MLYDEBUG |
| 766 | printf("%s: WARNING: BTL rescan (physical) for %d:%d " |
| 767 | " returned data for %d:%d instead\n" , |
| 768 | device_xname(mly->mly_dv), |
| 769 | bus, target, pdi->channel, pdi->target); |
| 770 | #endif |
| 771 | goto out; |
| 772 | } |
| 773 | |
| 774 | btl.mb_flags = MLY_BTL_PHYSICAL; |
| 775 | btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; |
| 776 | btl.mb_state = pdi->state; |
| 777 | btl.mb_speed = pdi->speed; |
| 778 | btl.mb_width = pdi->width; |
| 779 | |
| 780 | if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) |
| 781 | btl.mb_flags |= MLY_BTL_PROTECTED; |
| 782 | if (pdi->command_tags != 0) |
| 783 | btl.mb_flags |= MLY_BTL_TQING; |
| 784 | } else { |
| 785 | printf("%s: BTL rescan result invalid\n" , device_xname(mly->mly_dv)); |
| 786 | goto out; |
| 787 | } |
| 788 | |
| 789 | /* Decide whether we need to rescan the device. */ |
| 790 | if (btl.mb_flags != btlp->mb_flags || |
| 791 | btl.mb_speed != btlp->mb_speed || |
| 792 | btl.mb_width != btlp->mb_width) |
| 793 | rescan = 1; |
| 794 | |
| 795 | out: |
| 796 | *btlp = btl; |
| 797 | |
| 798 | if (rescan && (btl.mb_flags & MLY_BTL_PROTECTED) == 0) { |
| 799 | xm.xm_target = target; |
| 800 | mly_get_xfer_mode(mly, bus, &xm); |
| 801 | /* XXX SCSI mid-layer rescan goes here. */ |
| 802 | } |
| 803 | |
| 804 | /* Wake anybody waiting on the device to be rescanned. */ |
| 805 | wakeup(btlp); |
| 806 | |
| 807 | free(mc->mc_data, M_DEVBUF); |
| 808 | mly_ccb_free(mly, mc); |
| 809 | } |
| 810 | |
| 811 | /* |
| 812 | * Get the current health status and set the 'next event' counter to suit. |
| 813 | */ |
| 814 | static int |
| 815 | mly_get_eventstatus(struct mly_softc *mly) |
| 816 | { |
| 817 | struct mly_cmd_ioctl mci; |
| 818 | struct mly_health_status *mh; |
| 819 | int rv; |
| 820 | |
| 821 | /* Build the gethealthstatus ioctl and send it. */ |
| 822 | memset(&mci, 0, sizeof(mci)); |
| 823 | mh = NULL; |
| 824 | mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; |
| 825 | |
| 826 | rv = mly_ioctl(mly, &mci, (void *)&mh, sizeof(*mh), NULL, NULL); |
| 827 | if (rv) |
| 828 | return (rv); |
| 829 | |
| 830 | /* Get the event counter. */ |
| 831 | mly->mly_event_change = le32toh(mh->change_counter); |
| 832 | mly->mly_event_waiting = le32toh(mh->next_event); |
| 833 | mly->mly_event_counter = le32toh(mh->next_event); |
| 834 | |
| 835 | /* Save the health status into the memory mailbox */ |
| 836 | memcpy(&mly->mly_mmbox->mmm_health.status, mh, sizeof(*mh)); |
| 837 | |
| 838 | bus_dmamap_sync(mly->mly_dmat, mly->mly_mmbox_dmamap, |
| 839 | offsetof(struct mly_mmbox, mmm_health), |
| 840 | sizeof(mly->mly_mmbox->mmm_health), |
| 841 | BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); |
| 842 | |
| 843 | free(mh, M_DEVBUF); |
| 844 | return (0); |
| 845 | } |
| 846 | |
| 847 | /* |
| 848 | * Enable memory mailbox mode. |
| 849 | */ |
| 850 | static int |
| 851 | mly_enable_mmbox(struct mly_softc *mly) |
| 852 | { |
| 853 | struct mly_cmd_ioctl mci; |
| 854 | u_int8_t *sp; |
| 855 | u_int64_t tmp; |
| 856 | int rv; |
| 857 | |
| 858 | /* Build the ioctl and send it. */ |
| 859 | memset(&mci, 0, sizeof(mci)); |
| 860 | mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; |
| 861 | |
| 862 | /* Set buffer addresses. */ |
| 863 | tmp = mly->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); |
| 864 | mci.param.setmemorymailbox.command_mailbox_physaddr = htole64(tmp); |
| 865 | |
| 866 | tmp = mly->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); |
| 867 | mci.param.setmemorymailbox.status_mailbox_physaddr = htole64(tmp); |
| 868 | |
| 869 | tmp = mly->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); |
| 870 | mci.param.setmemorymailbox.health_buffer_physaddr = htole64(tmp); |
| 871 | |
| 872 | /* Set buffer sizes - abuse of data_size field is revolting. */ |
| 873 | sp = (u_int8_t *)&mci.data_size; |
| 874 | sp[0] = (sizeof(union mly_cmd_packet) * MLY_MMBOX_COMMANDS) >> 10; |
| 875 | sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) >> 10; |
| 876 | mci.param.setmemorymailbox.health_buffer_size = |
| 877 | sizeof(union mly_health_region) >> 10; |
| 878 | |
| 879 | rv = mly_ioctl(mly, &mci, NULL, 0, NULL, NULL); |
| 880 | if (rv) |
| 881 | return (rv); |
| 882 | |
| 883 | mly->mly_state |= MLY_STATE_MMBOX_ACTIVE; |
| 884 | return (0); |
| 885 | } |
| 886 | |
| 887 | /* |
| 888 | * Flush all pending I/O from the controller. |
| 889 | */ |
| 890 | static int |
| 891 | mly_flush(struct mly_softc *mly) |
| 892 | { |
| 893 | struct mly_cmd_ioctl mci; |
| 894 | |
| 895 | /* Build the ioctl */ |
| 896 | memset(&mci, 0, sizeof(mci)); |
| 897 | mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; |
| 898 | mci.param.deviceoperation.operation_device = |
| 899 | MLY_OPDEVICE_PHYSICAL_CONTROLLER; |
| 900 | |
| 901 | /* Pass it off to the controller */ |
| 902 | return (mly_ioctl(mly, &mci, NULL, 0, NULL, NULL)); |
| 903 | } |
| 904 | |
| 905 | /* |
| 906 | * Perform an ioctl command. |
| 907 | * |
| 908 | * If (data) is not NULL, the command requires data transfer to the |
| 909 | * controller. If (*data) is NULL the command requires data transfer from |
| 910 | * the controller, and we will allocate a buffer for it. |
| 911 | */ |
| 912 | static int |
| 913 | mly_ioctl(struct mly_softc *mly, struct mly_cmd_ioctl *ioctl, void **data, |
| 914 | size_t datasize, void *sense_buffer, |
| 915 | size_t *sense_length) |
| 916 | { |
| 917 | struct mly_ccb *mc; |
| 918 | struct mly_cmd_ioctl *mci; |
| 919 | u_int8_t status; |
| 920 | int rv; |
| 921 | |
| 922 | mc = NULL; |
| 923 | if ((rv = mly_ccb_alloc(mly, &mc)) != 0) |
| 924 | goto bad; |
| 925 | |
| 926 | /* |
| 927 | * Copy the ioctl structure, but save some important fields and then |
| 928 | * fixup. |
| 929 | */ |
| 930 | mci = &mc->mc_packet->ioctl; |
| 931 | ioctl->sense_buffer_address = htole64(mci->sense_buffer_address); |
| 932 | ioctl->maximum_sense_size = mci->maximum_sense_size; |
| 933 | *mci = *ioctl; |
| 934 | mci->opcode = MDACMD_IOCTL; |
| 935 | mci->timeout = 30 | MLY_TIMEOUT_SECONDS; |
| 936 | |
| 937 | /* Handle the data buffer. */ |
| 938 | if (data != NULL) { |
| 939 | if (*data == NULL) { |
| 940 | /* Allocate data buffer */ |
| 941 | mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT); |
| 942 | mc->mc_flags |= MLY_CCB_DATAIN; |
| 943 | } else { |
| 944 | mc->mc_data = *data; |
| 945 | mc->mc_flags |= MLY_CCB_DATAOUT; |
| 946 | } |
| 947 | mc->mc_length = datasize; |
| 948 | mc->mc_packet->generic.data_size = htole32(datasize); |
| 949 | } |
| 950 | |
| 951 | /* Run the command. */ |
| 952 | if (datasize > 0) |
| 953 | if ((rv = mly_ccb_map(mly, mc)) != 0) |
| 954 | goto bad; |
| 955 | rv = mly_ccb_poll(mly, mc, 30000); |
| 956 | if (datasize > 0) |
| 957 | mly_ccb_unmap(mly, mc); |
| 958 | if (rv != 0) |
| 959 | goto bad; |
| 960 | |
| 961 | /* Clean up and return any data. */ |
| 962 | status = mc->mc_status; |
| 963 | |
| 964 | if (status != 0) |
| 965 | printf("mly_ioctl: command status %d\n" , status); |
| 966 | |
| 967 | if (mc->mc_sense > 0 && sense_buffer != NULL) { |
| 968 | memcpy(sense_buffer, mc->mc_packet, mc->mc_sense); |
| 969 | *sense_length = mc->mc_sense; |
| 970 | goto bad; |
| 971 | } |
| 972 | |
| 973 | /* Should we return a data pointer? */ |
| 974 | if (data != NULL && *data == NULL) |
| 975 | *data = mc->mc_data; |
| 976 | |
| 977 | /* Command completed OK. */ |
| 978 | rv = (status != 0 ? EIO : 0); |
| 979 | |
| 980 | bad: |
| 981 | if (mc != NULL) { |
| 982 | /* Do we need to free a data buffer we allocated? */ |
| 983 | if (rv != 0 && mc->mc_data != NULL && |
| 984 | (data == NULL || *data == NULL)) |
| 985 | free(mc->mc_data, M_DEVBUF); |
| 986 | mly_ccb_free(mly, mc); |
| 987 | } |
| 988 | |
| 989 | return (rv); |
| 990 | } |
| 991 | |
| 992 | /* |
| 993 | * Check for event(s) outstanding in the controller. |
| 994 | */ |
| 995 | static void |
| 996 | mly_check_event(struct mly_softc *mly) |
| 997 | { |
| 998 | |
| 999 | bus_dmamap_sync(mly->mly_dmat, mly->mly_mmbox_dmamap, |
| 1000 | offsetof(struct mly_mmbox, mmm_health), |
| 1001 | sizeof(mly->mly_mmbox->mmm_health), |
| 1002 | BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); |
| 1003 | |
| 1004 | /* |
| 1005 | * The controller may have updated the health status information, so |
| 1006 | * check for it here. Note that the counters are all in host |
| 1007 | * memory, so this check is very cheap. Also note that we depend on |
| 1008 | * checking on completion |
| 1009 | */ |
| 1010 | if (le32toh(mly->mly_mmbox->mmm_health.status.change_counter) != |
| 1011 | mly->mly_event_change) { |
| 1012 | mly->mly_event_change = |
| 1013 | le32toh(mly->mly_mmbox->mmm_health.status.change_counter); |
| 1014 | mly->mly_event_waiting = |
| 1015 | le32toh(mly->mly_mmbox->mmm_health.status.next_event); |
| 1016 | |
| 1017 | /* Wake up anyone that might be interested in this. */ |
| 1018 | wakeup(&mly->mly_event_change); |
| 1019 | } |
| 1020 | |
| 1021 | bus_dmamap_sync(mly->mly_dmat, mly->mly_mmbox_dmamap, |
| 1022 | offsetof(struct mly_mmbox, mmm_health), |
| 1023 | sizeof(mly->mly_mmbox->mmm_health), |
| 1024 | BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); |
| 1025 | |
| 1026 | if (mly->mly_event_counter != mly->mly_event_waiting) |
| 1027 | mly_fetch_event(mly); |
| 1028 | } |
| 1029 | |
| 1030 | /* |
| 1031 | * Fetch one event from the controller. If we fail due to resource |
| 1032 | * starvation, we'll be retried the next time a command completes. |
| 1033 | */ |
| 1034 | static void |
| 1035 | mly_fetch_event(struct mly_softc *mly) |
| 1036 | { |
| 1037 | struct mly_ccb *mc; |
| 1038 | struct mly_cmd_ioctl *mci; |
| 1039 | int s; |
| 1040 | u_int32_t event; |
| 1041 | |
| 1042 | /* Get a command. */ |
| 1043 | if (mly_ccb_alloc(mly, &mc)) |
| 1044 | return; |
| 1045 | |
| 1046 | /* Set up the data buffer. */ |
| 1047 | mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, |
| 1048 | M_NOWAIT|M_ZERO); |
| 1049 | |
| 1050 | mc->mc_length = sizeof(struct mly_event); |
| 1051 | mc->mc_flags |= MLY_CCB_DATAIN; |
| 1052 | mc->mc_complete = mly_complete_event; |
| 1053 | |
| 1054 | /* |
| 1055 | * Get an event number to fetch. It's possible that we've raced |
| 1056 | * with another context for the last event, in which case there will |
| 1057 | * be no more events. |
| 1058 | */ |
| 1059 | s = splbio(); |
| 1060 | if (mly->mly_event_counter == mly->mly_event_waiting) { |
| 1061 | splx(s); |
| 1062 | free(mc->mc_data, M_DEVBUF); |
| 1063 | mly_ccb_free(mly, mc); |
| 1064 | return; |
| 1065 | } |
| 1066 | event = mly->mly_event_counter++; |
| 1067 | splx(s); |
| 1068 | |
| 1069 | /* |
| 1070 | * Build the ioctl. |
| 1071 | * |
| 1072 | * At this point we are committed to sending this request, as it |
| 1073 | * will be the only one constructed for this particular event |
| 1074 | * number. |
| 1075 | */ |
| 1076 | mci = (struct mly_cmd_ioctl *)&mc->mc_packet->ioctl; |
| 1077 | mci->opcode = MDACMD_IOCTL; |
| 1078 | mci->data_size = htole32(sizeof(struct mly_event)); |
| 1079 | _lto3l(MLY_PHYADDR(0, 0, (event >> 16) & 0xff, (event >> 24) & 0xff), |
| 1080 | mci->addr); |
| 1081 | mci->timeout = 30 | MLY_TIMEOUT_SECONDS; |
| 1082 | mci->sub_ioctl = MDACIOCTL_GETEVENT; |
| 1083 | mci->param.getevent.sequence_number_low = htole16(event & 0xffff); |
| 1084 | |
| 1085 | /* |
| 1086 | * Submit the command. |
| 1087 | */ |
| 1088 | if (mly_ccb_map(mly, mc) != 0) |
| 1089 | goto bad; |
| 1090 | mly_ccb_enqueue(mly, mc); |
| 1091 | return; |
| 1092 | |
| 1093 | bad: |
| 1094 | printf("%s: couldn't fetch event %u\n" , device_xname(mly->mly_dv), event); |
| 1095 | free(mc->mc_data, M_DEVBUF); |
| 1096 | mly_ccb_free(mly, mc); |
| 1097 | } |
| 1098 | |
| 1099 | /* |
| 1100 | * Handle the completion of an event poll. |
| 1101 | */ |
| 1102 | static void |
| 1103 | mly_complete_event(struct mly_softc *mly, struct mly_ccb *mc) |
| 1104 | { |
| 1105 | struct mly_event *me; |
| 1106 | |
| 1107 | me = (struct mly_event *)mc->mc_data; |
| 1108 | mly_ccb_unmap(mly, mc); |
| 1109 | mly_ccb_free(mly, mc); |
| 1110 | |
| 1111 | /* If the event was successfully fetched, process it. */ |
| 1112 | if (mc->mc_status == SCSI_OK) |
| 1113 | mly_process_event(mly, me); |
| 1114 | else |
| 1115 | aprint_error_dev(mly->mly_dv, "unable to fetch event; status = 0x%x\n" , |
| 1116 | mc->mc_status); |
| 1117 | |
| 1118 | free(me, M_DEVBUF); |
| 1119 | |
| 1120 | /* Check for another event. */ |
| 1121 | mly_check_event(mly); |
| 1122 | } |
| 1123 | |
| 1124 | /* |
| 1125 | * Process a controller event. Called with interrupts blocked (i.e., at |
| 1126 | * interrupt time). |
| 1127 | */ |
| 1128 | static void |
| 1129 | mly_process_event(struct mly_softc *mly, struct mly_event *me) |
| 1130 | { |
| 1131 | struct scsi_sense_data *ssd; |
| 1132 | int bus, target, event, class, action; |
| 1133 | const char *fp, *tp; |
| 1134 | |
| 1135 | ssd = (struct scsi_sense_data *)&me->sense[0]; |
| 1136 | |
| 1137 | /* |
| 1138 | * Errors can be reported using vendor-unique sense data. In this |
| 1139 | * case, the event code will be 0x1c (Request sense data present), |
| 1140 | * the sense key will be 0x09 (vendor specific), the MSB of the ASC |
| 1141 | * will be set, and the actual event code will be a 16-bit value |
| 1142 | * comprised of the ASCQ (low byte) and low seven bits of the ASC |
| 1143 | * (low seven bits of the high byte). |
| 1144 | */ |
| 1145 | if (le32toh(me->code) == 0x1c && |
| 1146 | SSD_SENSE_KEY(ssd->flags) == SKEY_VENDOR_SPECIFIC && |
| 1147 | (ssd->asc & 0x80) != 0) { |
| 1148 | event = ((int)(ssd->asc & ~0x80) << 8) + |
| 1149 | ssd->ascq; |
| 1150 | } else |
| 1151 | event = le32toh(me->code); |
| 1152 | |
| 1153 | /* Look up event, get codes. */ |
| 1154 | fp = mly_describe_code(mly_table_event, event); |
| 1155 | |
| 1156 | /* Quiet event? */ |
| 1157 | class = fp[0]; |
| 1158 | #ifdef notyet |
| 1159 | if (isupper(class) && bootverbose) |
| 1160 | class = tolower(class); |
| 1161 | #endif |
| 1162 | |
| 1163 | /* Get action code, text string. */ |
| 1164 | action = fp[1]; |
| 1165 | tp = fp + 3; |
| 1166 | |
| 1167 | /* |
| 1168 | * Print some information about the event. |
| 1169 | * |
| 1170 | * This code uses a table derived from the corresponding portion of |
| 1171 | * the Linux driver, and thus the parser is very similar. |
| 1172 | */ |
| 1173 | switch (class) { |
| 1174 | case 'p': |
| 1175 | /* |
| 1176 | * Error on physical drive. |
| 1177 | */ |
| 1178 | printf("%s: physical device %d:%d %s\n" , device_xname(mly->mly_dv), |
| 1179 | me->channel, me->target, tp); |
| 1180 | if (action == 'r') |
| 1181 | mly->mly_btl[me->channel][me->target].mb_flags |= |
| 1182 | MLY_BTL_RESCAN; |
| 1183 | break; |
| 1184 | |
| 1185 | case 'l': |
| 1186 | case 'm': |
| 1187 | /* |
| 1188 | * Error on logical unit, or message about logical unit. |
| 1189 | */ |
| 1190 | bus = MLY_LOGDEV_BUS(mly, me->lun); |
| 1191 | target = MLY_LOGDEV_TARGET(mly, me->lun); |
| 1192 | printf("%s: logical device %d:%d %s\n" , device_xname(mly->mly_dv), |
| 1193 | bus, target, tp); |
| 1194 | if (action == 'r') |
| 1195 | mly->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; |
| 1196 | break; |
| 1197 | |
| 1198 | case 's': |
| 1199 | /* |
| 1200 | * Report of sense data. |
| 1201 | */ |
| 1202 | if ((SSD_SENSE_KEY(ssd->flags) == SKEY_NO_SENSE || |
| 1203 | SSD_SENSE_KEY(ssd->flags) == SKEY_NOT_READY) && |
| 1204 | ssd->asc == 0x04 && |
| 1205 | (ssd->ascq == 0x01 || |
| 1206 | ssd->ascq == 0x02)) { |
| 1207 | /* Ignore NO_SENSE or NOT_READY in one case */ |
| 1208 | break; |
| 1209 | } |
| 1210 | |
| 1211 | /* |
| 1212 | * XXX Should translate this if SCSIVERBOSE. |
| 1213 | */ |
| 1214 | printf("%s: physical device %d:%d %s\n" , device_xname(mly->mly_dv), |
| 1215 | me->channel, me->target, tp); |
| 1216 | printf("%s: sense key %d asc %02x ascq %02x\n" , |
| 1217 | device_xname(mly->mly_dv), SSD_SENSE_KEY(ssd->flags), |
| 1218 | ssd->asc, ssd->ascq); |
| 1219 | printf("%s: info %x%x%x%x csi %x%x%x%x\n" , |
| 1220 | device_xname(mly->mly_dv), ssd->info[0], ssd->info[1], |
| 1221 | ssd->info[2], ssd->info[3], ssd->csi[0], |
| 1222 | ssd->csi[1], ssd->csi[2], |
| 1223 | ssd->csi[3]); |
| 1224 | if (action == 'r') |
| 1225 | mly->mly_btl[me->channel][me->target].mb_flags |= |
| 1226 | MLY_BTL_RESCAN; |
| 1227 | break; |
| 1228 | |
| 1229 | case 'e': |
| 1230 | printf("%s: " , device_xname(mly->mly_dv)); |
| 1231 | printf(tp, me->target, me->lun); |
| 1232 | break; |
| 1233 | |
| 1234 | case 'c': |
| 1235 | printf("%s: controller %s\n" , device_xname(mly->mly_dv), tp); |
| 1236 | break; |
| 1237 | |
| 1238 | case '?': |
| 1239 | printf("%s: %s - %d\n" , device_xname(mly->mly_dv), tp, event); |
| 1240 | break; |
| 1241 | |
| 1242 | default: |
| 1243 | /* Probably a 'noisy' event being ignored. */ |
| 1244 | break; |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | /* |
| 1249 | * Perform periodic activities. |
| 1250 | */ |
| 1251 | static void |
| 1252 | mly_thread(void *cookie) |
| 1253 | { |
| 1254 | struct mly_softc *mly; |
| 1255 | struct mly_btl *btl; |
| 1256 | int s, bus, target, done; |
| 1257 | |
| 1258 | mly = (struct mly_softc *)cookie; |
| 1259 | |
| 1260 | for (;;) { |
| 1261 | /* Check for new events. */ |
| 1262 | mly_check_event(mly); |
| 1263 | |
| 1264 | /* Re-scan up to 1 device. */ |
| 1265 | s = splbio(); |
| 1266 | done = 0; |
| 1267 | for (bus = 0; bus < mly->mly_nchans && !done; bus++) { |
| 1268 | for (target = 0; target < MLY_MAX_TARGETS; target++) { |
| 1269 | /* Perform device rescan? */ |
| 1270 | btl = &mly->mly_btl[bus][target]; |
| 1271 | if ((btl->mb_flags & MLY_BTL_RESCAN) != 0) { |
| 1272 | btl->mb_flags ^= MLY_BTL_RESCAN; |
| 1273 | mly_scan_btl(mly, bus, target); |
| 1274 | done = 1; |
| 1275 | break; |
| 1276 | } |
| 1277 | } |
| 1278 | } |
| 1279 | splx(s); |
| 1280 | |
| 1281 | /* Sleep for N seconds. */ |
| 1282 | tsleep(mly_thread, PWAIT, "mlyzzz" , |
| 1283 | hz * MLY_PERIODIC_INTERVAL); |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | /* |
| 1288 | * Submit a command to the controller and poll on completion. Return |
| 1289 | * non-zero on timeout. |
| 1290 | */ |
| 1291 | static int |
| 1292 | mly_ccb_poll(struct mly_softc *mly, struct mly_ccb *mc, int timo) |
| 1293 | { |
| 1294 | int rv; |
| 1295 | |
| 1296 | if ((rv = mly_ccb_submit(mly, mc)) != 0) |
| 1297 | return (rv); |
| 1298 | |
| 1299 | for (timo *= 10; timo != 0; timo--) { |
| 1300 | if ((mc->mc_flags & MLY_CCB_COMPLETE) != 0) |
| 1301 | break; |
| 1302 | mly_intr(mly); |
| 1303 | DELAY(100); |
| 1304 | } |
| 1305 | |
| 1306 | return (timo == 0); |
| 1307 | } |
| 1308 | |
| 1309 | /* |
| 1310 | * Submit a command to the controller and sleep on completion. Return |
| 1311 | * non-zero on timeout. |
| 1312 | */ |
| 1313 | static int |
| 1314 | mly_ccb_wait(struct mly_softc *mly, struct mly_ccb *mc, int timo) |
| 1315 | { |
| 1316 | int rv, s; |
| 1317 | |
| 1318 | mly_ccb_enqueue(mly, mc); |
| 1319 | |
| 1320 | s = splbio(); |
| 1321 | if ((mc->mc_flags & MLY_CCB_COMPLETE) != 0) { |
| 1322 | splx(s); |
| 1323 | return (0); |
| 1324 | } |
| 1325 | rv = tsleep(mc, PRIBIO, "mlywccb" , timo * hz / 1000); |
| 1326 | splx(s); |
| 1327 | |
| 1328 | return (rv); |
| 1329 | } |
| 1330 | |
| 1331 | /* |
| 1332 | * If a CCB is specified, enqueue it. Pull CCBs off the software queue in |
| 1333 | * the order that they were enqueued and try to submit their command blocks |
| 1334 | * to the controller for execution. |
| 1335 | */ |
| 1336 | void |
| 1337 | mly_ccb_enqueue(struct mly_softc *mly, struct mly_ccb *mc) |
| 1338 | { |
| 1339 | int s; |
| 1340 | |
| 1341 | s = splbio(); |
| 1342 | |
| 1343 | if (mc != NULL) |
| 1344 | SIMPLEQ_INSERT_TAIL(&mly->mly_ccb_queue, mc, mc_link.simpleq); |
| 1345 | |
| 1346 | while ((mc = SIMPLEQ_FIRST(&mly->mly_ccb_queue)) != NULL) { |
| 1347 | if (mly_ccb_submit(mly, mc)) |
| 1348 | break; |
| 1349 | SIMPLEQ_REMOVE_HEAD(&mly->mly_ccb_queue, mc_link.simpleq); |
| 1350 | } |
| 1351 | |
| 1352 | splx(s); |
| 1353 | } |
| 1354 | |
| 1355 | /* |
| 1356 | * Deliver a command to the controller. |
| 1357 | */ |
| 1358 | static int |
| 1359 | mly_ccb_submit(struct mly_softc *mly, struct mly_ccb *mc) |
| 1360 | { |
| 1361 | union mly_cmd_packet *pkt; |
| 1362 | int s, off; |
| 1363 | |
| 1364 | mc->mc_packet->generic.command_id = htole16(mc->mc_slot); |
| 1365 | |
| 1366 | bus_dmamap_sync(mly->mly_dmat, mly->mly_pkt_dmamap, |
| 1367 | mc->mc_packetphys - mly->mly_pkt_busaddr, |
| 1368 | sizeof(union mly_cmd_packet), |
| 1369 | BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); |
| 1370 | |
| 1371 | s = splbio(); |
| 1372 | |
| 1373 | /* |
| 1374 | * Do we have to use the hardware mailbox? |
| 1375 | */ |
| 1376 | if ((mly->mly_state & MLY_STATE_MMBOX_ACTIVE) == 0) { |
| 1377 | /* |
| 1378 | * Check to see if the controller is ready for us. |
| 1379 | */ |
| 1380 | if (mly_idbr_true(mly, MLY_HM_CMDSENT)) { |
| 1381 | splx(s); |
| 1382 | return (EBUSY); |
| 1383 | } |
| 1384 | |
| 1385 | /* |
| 1386 | * It's ready, send the command. |
| 1387 | */ |
| 1388 | mly_outl(mly, mly->mly_cmd_mailbox, |
| 1389 | (u_int64_t)mc->mc_packetphys & 0xffffffff); |
| 1390 | mly_outl(mly, mly->mly_cmd_mailbox + 4, |
| 1391 | (u_int64_t)mc->mc_packetphys >> 32); |
| 1392 | mly_outb(mly, mly->mly_idbr, MLY_HM_CMDSENT); |
| 1393 | } else { |
| 1394 | pkt = &mly->mly_mmbox->mmm_command[mly->mly_mmbox_cmd_idx]; |
| 1395 | off = (char *)pkt - (char *)mly->mly_mmbox; |
| 1396 | |
| 1397 | bus_dmamap_sync(mly->mly_dmat, mly->mly_mmbox_dmamap, |
| 1398 | off, sizeof(mly->mly_mmbox->mmm_command[0]), |
| 1399 | BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); |
| 1400 | |
| 1401 | /* Check to see if the next index is free yet. */ |
| 1402 | if (pkt->mmbox.flag != 0) { |
| 1403 | splx(s); |
| 1404 | return (EBUSY); |
| 1405 | } |
| 1406 | |
| 1407 | /* Copy in new command */ |
| 1408 | memcpy(pkt->mmbox.data, mc->mc_packet->mmbox.data, |
| 1409 | sizeof(pkt->mmbox.data)); |
| 1410 | |
| 1411 | /* Copy flag last. */ |
| 1412 | pkt->mmbox.flag = mc->mc_packet->mmbox.flag; |
| 1413 | |
| 1414 | bus_dmamap_sync(mly->mly_dmat, mly->mly_mmbox_dmamap, |
| 1415 | off, sizeof(mly->mly_mmbox->mmm_command[0]), |
| 1416 | BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); |
| 1417 | |
| 1418 | /* Signal controller and update index. */ |
| 1419 | mly_outb(mly, mly->mly_idbr, MLY_AM_CMDSENT); |
| 1420 | mly->mly_mmbox_cmd_idx = |
| 1421 | (mly->mly_mmbox_cmd_idx + 1) % MLY_MMBOX_COMMANDS; |
| 1422 | } |
| 1423 | |
| 1424 | splx(s); |
| 1425 | return (0); |
| 1426 | } |
| 1427 | |
| 1428 | /* |
| 1429 | * Pick up completed commands from the controller and handle accordingly. |
| 1430 | */ |
| 1431 | int |
| 1432 | mly_intr(void *cookie) |
| 1433 | { |
| 1434 | struct mly_ccb *mc; |
| 1435 | union mly_status_packet *sp; |
| 1436 | u_int16_t slot; |
| 1437 | int forus, off; |
| 1438 | struct mly_softc *mly; |
| 1439 | |
| 1440 | mly = cookie; |
| 1441 | forus = 0; |
| 1442 | |
| 1443 | /* |
| 1444 | * Pick up hardware-mailbox commands. |
| 1445 | */ |
| 1446 | if (mly_odbr_true(mly, MLY_HM_STSREADY)) { |
| 1447 | slot = mly_inw(mly, mly->mly_status_mailbox); |
| 1448 | |
| 1449 | if (slot < MLY_SLOT_MAX) { |
| 1450 | mc = mly->mly_ccbs + (slot - MLY_SLOT_START); |
| 1451 | mc->mc_status = |
| 1452 | mly_inb(mly, mly->mly_status_mailbox + 2); |
| 1453 | mc->mc_sense = |
| 1454 | mly_inb(mly, mly->mly_status_mailbox + 3); |
| 1455 | mc->mc_resid = |
| 1456 | mly_inl(mly, mly->mly_status_mailbox + 4); |
| 1457 | |
| 1458 | mly_ccb_complete(mly, mc); |
| 1459 | } else { |
| 1460 | /* Slot 0xffff may mean "extremely bogus command". */ |
| 1461 | printf("%s: got HM completion for illegal slot %u\n" , |
| 1462 | device_xname(mly->mly_dv), slot); |
| 1463 | } |
| 1464 | |
| 1465 | /* Unconditionally acknowledge status. */ |
| 1466 | mly_outb(mly, mly->mly_odbr, MLY_HM_STSREADY); |
| 1467 | mly_outb(mly, mly->mly_idbr, MLY_HM_STSACK); |
| 1468 | forus = 1; |
| 1469 | } |
| 1470 | |
| 1471 | /* |
| 1472 | * Pick up memory-mailbox commands. |
| 1473 | */ |
| 1474 | if (mly_odbr_true(mly, MLY_AM_STSREADY)) { |
| 1475 | for (;;) { |
| 1476 | sp = &mly->mly_mmbox->mmm_status[mly->mly_mmbox_sts_idx]; |
| 1477 | off = (char *)sp - (char *)mly->mly_mmbox; |
| 1478 | |
| 1479 | bus_dmamap_sync(mly->mly_dmat, mly->mly_mmbox_dmamap, |
| 1480 | off, sizeof(mly->mly_mmbox->mmm_command[0]), |
| 1481 | BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); |
| 1482 | |
| 1483 | /* Check for more status. */ |
| 1484 | if (sp->mmbox.flag == 0) |
| 1485 | break; |
| 1486 | |
| 1487 | /* Get slot number. */ |
| 1488 | slot = le16toh(sp->status.command_id); |
| 1489 | if (slot < MLY_SLOT_MAX) { |
| 1490 | mc = mly->mly_ccbs + (slot - MLY_SLOT_START); |
| 1491 | mc->mc_status = sp->status.status; |
| 1492 | mc->mc_sense = sp->status.sense_length; |
| 1493 | mc->mc_resid = le32toh(sp->status.residue); |
| 1494 | mly_ccb_complete(mly, mc); |
| 1495 | } else { |
| 1496 | /* |
| 1497 | * Slot 0xffff may mean "extremely bogus |
| 1498 | * command". |
| 1499 | */ |
| 1500 | printf("%s: got AM completion for illegal " |
| 1501 | "slot %u at %d\n" , device_xname(mly->mly_dv), |
| 1502 | slot, mly->mly_mmbox_sts_idx); |
| 1503 | } |
| 1504 | |
| 1505 | /* Clear and move to next index. */ |
| 1506 | sp->mmbox.flag = 0; |
| 1507 | mly->mly_mmbox_sts_idx = |
| 1508 | (mly->mly_mmbox_sts_idx + 1) % MLY_MMBOX_STATUS; |
| 1509 | } |
| 1510 | |
| 1511 | /* Acknowledge that we have collected status value(s). */ |
| 1512 | mly_outb(mly, mly->mly_odbr, MLY_AM_STSREADY); |
| 1513 | forus = 1; |
| 1514 | } |
| 1515 | |
| 1516 | /* |
| 1517 | * Run the queue. |
| 1518 | */ |
| 1519 | if (forus && ! SIMPLEQ_EMPTY(&mly->mly_ccb_queue)) |
| 1520 | mly_ccb_enqueue(mly, NULL); |
| 1521 | |
| 1522 | return (forus); |
| 1523 | } |
| 1524 | |
| 1525 | /* |
| 1526 | * Process completed commands |
| 1527 | */ |
| 1528 | static void |
| 1529 | mly_ccb_complete(struct mly_softc *mly, struct mly_ccb *mc) |
| 1530 | { |
| 1531 | void (*complete)(struct mly_softc *, struct mly_ccb *); |
| 1532 | |
| 1533 | bus_dmamap_sync(mly->mly_dmat, mly->mly_pkt_dmamap, |
| 1534 | mc->mc_packetphys - mly->mly_pkt_busaddr, |
| 1535 | sizeof(union mly_cmd_packet), |
| 1536 | BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); |
| 1537 | |
| 1538 | complete = mc->mc_complete; |
| 1539 | mc->mc_flags |= MLY_CCB_COMPLETE; |
| 1540 | |
| 1541 | /* |
| 1542 | * Call completion handler or wake up sleeping consumer. |
| 1543 | */ |
| 1544 | if (complete != NULL) |
| 1545 | (*complete)(mly, mc); |
| 1546 | else |
| 1547 | wakeup(mc); |
| 1548 | } |
| 1549 | |
| 1550 | /* |
| 1551 | * Allocate a command. |
| 1552 | */ |
| 1553 | int |
| 1554 | mly_ccb_alloc(struct mly_softc *mly, struct mly_ccb **mcp) |
| 1555 | { |
| 1556 | struct mly_ccb *mc; |
| 1557 | int s; |
| 1558 | |
| 1559 | s = splbio(); |
| 1560 | mc = SLIST_FIRST(&mly->mly_ccb_free); |
| 1561 | if (mc != NULL) |
| 1562 | SLIST_REMOVE_HEAD(&mly->mly_ccb_free, mc_link.slist); |
| 1563 | splx(s); |
| 1564 | |
| 1565 | *mcp = mc; |
| 1566 | return (mc == NULL ? EAGAIN : 0); |
| 1567 | } |
| 1568 | |
| 1569 | /* |
| 1570 | * Release a command back to the freelist. |
| 1571 | */ |
| 1572 | void |
| 1573 | mly_ccb_free(struct mly_softc *mly, struct mly_ccb *mc) |
| 1574 | { |
| 1575 | int s; |
| 1576 | |
| 1577 | /* |
| 1578 | * Fill in parts of the command that may cause confusion if a |
| 1579 | * consumer doesn't when we are later allocated. |
| 1580 | */ |
| 1581 | mc->mc_data = NULL; |
| 1582 | mc->mc_flags = 0; |
| 1583 | mc->mc_complete = NULL; |
| 1584 | mc->mc_private = NULL; |
| 1585 | mc->mc_packet->generic.command_control = 0; |
| 1586 | |
| 1587 | /* |
| 1588 | * By default, we set up to overwrite the command packet with sense |
| 1589 | * information. |
| 1590 | */ |
| 1591 | mc->mc_packet->generic.sense_buffer_address = |
| 1592 | htole64(mc->mc_packetphys); |
| 1593 | mc->mc_packet->generic.maximum_sense_size = |
| 1594 | sizeof(union mly_cmd_packet); |
| 1595 | |
| 1596 | s = splbio(); |
| 1597 | SLIST_INSERT_HEAD(&mly->mly_ccb_free, mc, mc_link.slist); |
| 1598 | splx(s); |
| 1599 | } |
| 1600 | |
| 1601 | /* |
| 1602 | * Allocate and initialize command and packet structures. |
| 1603 | * |
| 1604 | * If the controller supports fewer than MLY_MAX_CCBS commands, limit our |
| 1605 | * allocation to that number. If we don't yet know how many commands the |
| 1606 | * controller supports, allocate a very small set (suitable for initialization |
| 1607 | * purposes only). |
| 1608 | */ |
| 1609 | static int |
| 1610 | mly_alloc_ccbs(struct mly_softc *mly) |
| 1611 | { |
| 1612 | struct mly_ccb *mc; |
| 1613 | int i, rv; |
| 1614 | |
| 1615 | if (mly->mly_controllerinfo == NULL) |
| 1616 | mly->mly_ncmds = MLY_CCBS_RESV; |
| 1617 | else { |
| 1618 | i = le16toh(mly->mly_controllerinfo->maximum_parallel_commands); |
| 1619 | mly->mly_ncmds = min(MLY_MAX_CCBS, i); |
| 1620 | } |
| 1621 | |
| 1622 | /* |
| 1623 | * Allocate enough space for all the command packets in one chunk |
| 1624 | * and map them permanently into controller-visible space. |
| 1625 | */ |
| 1626 | rv = mly_dmamem_alloc(mly, |
| 1627 | mly->mly_ncmds * sizeof(union mly_cmd_packet), |
| 1628 | &mly->mly_pkt_dmamap, (void **)&mly->mly_pkt, |
| 1629 | &mly->mly_pkt_busaddr, &mly->mly_pkt_seg); |
| 1630 | if (rv) |
| 1631 | return (rv); |
| 1632 | |
| 1633 | mly->mly_ccbs = malloc(sizeof(struct mly_ccb) * mly->mly_ncmds, |
| 1634 | M_DEVBUF, M_NOWAIT|M_ZERO); |
| 1635 | |
| 1636 | for (i = 0; i < mly->mly_ncmds; i++) { |
| 1637 | mc = mly->mly_ccbs + i; |
| 1638 | mc->mc_slot = MLY_SLOT_START + i; |
| 1639 | mc->mc_packet = mly->mly_pkt + i; |
| 1640 | mc->mc_packetphys = mly->mly_pkt_busaddr + |
| 1641 | (i * sizeof(union mly_cmd_packet)); |
| 1642 | |
| 1643 | rv = bus_dmamap_create(mly->mly_dmat, MLY_MAX_XFER, |
| 1644 | MLY_MAX_SEGS, MLY_MAX_XFER, 0, |
| 1645 | BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
| 1646 | &mc->mc_datamap); |
| 1647 | if (rv) { |
| 1648 | mly_release_ccbs(mly); |
| 1649 | return (rv); |
| 1650 | } |
| 1651 | |
| 1652 | mly_ccb_free(mly, mc); |
| 1653 | } |
| 1654 | |
| 1655 | return (0); |
| 1656 | } |
| 1657 | |
| 1658 | /* |
| 1659 | * Free all the storage held by commands. |
| 1660 | * |
| 1661 | * Must be called with all commands on the free list. |
| 1662 | */ |
| 1663 | static void |
| 1664 | mly_release_ccbs(struct mly_softc *mly) |
| 1665 | { |
| 1666 | struct mly_ccb *mc; |
| 1667 | |
| 1668 | /* Throw away command buffer DMA maps. */ |
| 1669 | while (mly_ccb_alloc(mly, &mc) == 0) |
| 1670 | bus_dmamap_destroy(mly->mly_dmat, mc->mc_datamap); |
| 1671 | |
| 1672 | /* Release CCB storage. */ |
| 1673 | free(mly->mly_ccbs, M_DEVBUF); |
| 1674 | |
| 1675 | /* Release the packet storage. */ |
| 1676 | mly_dmamem_free(mly, mly->mly_ncmds * sizeof(union mly_cmd_packet), |
| 1677 | mly->mly_pkt_dmamap, (void *)mly->mly_pkt, &mly->mly_pkt_seg); |
| 1678 | } |
| 1679 | |
| 1680 | /* |
| 1681 | * Map a command into controller-visible space. |
| 1682 | */ |
| 1683 | static int |
| 1684 | mly_ccb_map(struct mly_softc *mly, struct mly_ccb *mc) |
| 1685 | { |
| 1686 | struct mly_cmd_generic *gen; |
| 1687 | struct mly_sg_entry *sg; |
| 1688 | bus_dma_segment_t *ds; |
| 1689 | int flg, nseg, rv; |
| 1690 | |
| 1691 | #ifdef DIAGNOSTIC |
| 1692 | /* Don't map more than once. */ |
| 1693 | if ((mc->mc_flags & MLY_CCB_MAPPED) != 0) |
| 1694 | panic("mly_ccb_map: already mapped" ); |
| 1695 | mc->mc_flags |= MLY_CCB_MAPPED; |
| 1696 | |
| 1697 | /* Does the command have a data buffer? */ |
| 1698 | if (mc->mc_data == NULL) |
| 1699 | panic("mly_ccb_map: no data buffer" ); |
| 1700 | #endif |
| 1701 | |
| 1702 | rv = bus_dmamap_load(mly->mly_dmat, mc->mc_datamap, mc->mc_data, |
| 1703 | mc->mc_length, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | |
| 1704 | ((mc->mc_flags & MLY_CCB_DATAIN) != 0 ? |
| 1705 | BUS_DMA_READ : BUS_DMA_WRITE)); |
| 1706 | if (rv != 0) |
| 1707 | return (rv); |
| 1708 | |
| 1709 | gen = &mc->mc_packet->generic; |
| 1710 | |
| 1711 | /* |
| 1712 | * Can we use the transfer structure directly? |
| 1713 | */ |
| 1714 | if ((nseg = mc->mc_datamap->dm_nsegs) <= 2) { |
| 1715 | mc->mc_sgoff = -1; |
| 1716 | sg = &gen->transfer.direct.sg[0]; |
| 1717 | } else { |
| 1718 | mc->mc_sgoff = (mc->mc_slot - MLY_SLOT_START) * |
| 1719 | MLY_MAX_SEGS; |
| 1720 | sg = mly->mly_sg + mc->mc_sgoff; |
| 1721 | gen->command_control |= MLY_CMDCTL_EXTENDED_SG_TABLE; |
| 1722 | gen->transfer.indirect.entries[0] = htole16(nseg); |
| 1723 | gen->transfer.indirect.table_physaddr[0] = |
| 1724 | htole64(mly->mly_sg_busaddr + |
| 1725 | (mc->mc_sgoff * sizeof(struct mly_sg_entry))); |
| 1726 | } |
| 1727 | |
| 1728 | /* |
| 1729 | * Fill the S/G table. |
| 1730 | */ |
| 1731 | for (ds = mc->mc_datamap->dm_segs; nseg != 0; nseg--, sg++, ds++) { |
| 1732 | sg->physaddr = htole64(ds->ds_addr); |
| 1733 | sg->length = htole64(ds->ds_len); |
| 1734 | } |
| 1735 | |
| 1736 | /* |
| 1737 | * Sync up the data map. |
| 1738 | */ |
| 1739 | if ((mc->mc_flags & MLY_CCB_DATAIN) != 0) |
| 1740 | flg = BUS_DMASYNC_PREREAD; |
| 1741 | else /* if ((mc->mc_flags & MLY_CCB_DATAOUT) != 0) */ { |
| 1742 | gen->command_control |= MLY_CMDCTL_DATA_DIRECTION; |
| 1743 | flg = BUS_DMASYNC_PREWRITE; |
| 1744 | } |
| 1745 | |
| 1746 | bus_dmamap_sync(mly->mly_dmat, mc->mc_datamap, 0, mc->mc_length, flg); |
| 1747 | |
| 1748 | /* |
| 1749 | * Sync up the chained S/G table, if we're using one. |
| 1750 | */ |
| 1751 | if (mc->mc_sgoff == -1) |
| 1752 | return (0); |
| 1753 | |
| 1754 | bus_dmamap_sync(mly->mly_dmat, mly->mly_sg_dmamap, mc->mc_sgoff, |
| 1755 | MLY_SGL_SIZE, BUS_DMASYNC_PREWRITE); |
| 1756 | |
| 1757 | return (0); |
| 1758 | } |
| 1759 | |
| 1760 | /* |
| 1761 | * Unmap a command from controller-visible space. |
| 1762 | */ |
| 1763 | static void |
| 1764 | mly_ccb_unmap(struct mly_softc *mly, struct mly_ccb *mc) |
| 1765 | { |
| 1766 | int flg; |
| 1767 | |
| 1768 | #ifdef DIAGNOSTIC |
| 1769 | if ((mc->mc_flags & MLY_CCB_MAPPED) == 0) |
| 1770 | panic("mly_ccb_unmap: not mapped" ); |
| 1771 | mc->mc_flags &= ~MLY_CCB_MAPPED; |
| 1772 | #endif |
| 1773 | |
| 1774 | if ((mc->mc_flags & MLY_CCB_DATAIN) != 0) |
| 1775 | flg = BUS_DMASYNC_POSTREAD; |
| 1776 | else /* if ((mc->mc_flags & MLY_CCB_DATAOUT) != 0) */ |
| 1777 | flg = BUS_DMASYNC_POSTWRITE; |
| 1778 | |
| 1779 | bus_dmamap_sync(mly->mly_dmat, mc->mc_datamap, 0, mc->mc_length, flg); |
| 1780 | bus_dmamap_unload(mly->mly_dmat, mc->mc_datamap); |
| 1781 | |
| 1782 | if (mc->mc_sgoff == -1) |
| 1783 | return; |
| 1784 | |
| 1785 | bus_dmamap_sync(mly->mly_dmat, mly->mly_sg_dmamap, mc->mc_sgoff, |
| 1786 | MLY_SGL_SIZE, BUS_DMASYNC_POSTWRITE); |
| 1787 | } |
| 1788 | |
| 1789 | /* |
| 1790 | * Adjust the size of each I/O before it passes to the SCSI layer. |
| 1791 | */ |
| 1792 | static void |
| 1793 | mly_scsipi_minphys(struct buf *bp) |
| 1794 | { |
| 1795 | |
| 1796 | if (bp->b_bcount > MLY_MAX_XFER) |
| 1797 | bp->b_bcount = MLY_MAX_XFER; |
| 1798 | minphys(bp); |
| 1799 | } |
| 1800 | |
| 1801 | /* |
| 1802 | * Start a SCSI command. |
| 1803 | */ |
| 1804 | static void |
| 1805 | mly_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, |
| 1806 | void *arg) |
| 1807 | { |
| 1808 | struct mly_ccb *mc; |
| 1809 | struct mly_cmd_scsi_small *ss; |
| 1810 | struct scsipi_xfer *xs; |
| 1811 | struct scsipi_periph *periph; |
| 1812 | struct mly_softc *mly; |
| 1813 | struct mly_btl *btl; |
| 1814 | int s, tmp; |
| 1815 | |
| 1816 | mly = device_private(chan->chan_adapter->adapt_dev); |
| 1817 | |
| 1818 | switch (req) { |
| 1819 | case ADAPTER_REQ_RUN_XFER: |
| 1820 | xs = arg; |
| 1821 | periph = xs->xs_periph; |
| 1822 | btl = &mly->mly_btl[chan->chan_channel][periph->periph_target]; |
| 1823 | s = splbio(); |
| 1824 | tmp = btl->mb_flags; |
| 1825 | splx(s); |
| 1826 | |
| 1827 | /* |
| 1828 | * Check for I/O attempt to a protected or non-existant |
| 1829 | * device. |
| 1830 | */ |
| 1831 | if ((tmp & MLY_BTL_PROTECTED) != 0) { |
| 1832 | xs->error = XS_SELTIMEOUT; |
| 1833 | scsipi_done(xs); |
| 1834 | break; |
| 1835 | } |
| 1836 | |
| 1837 | #ifdef DIAGNOSTIC |
| 1838 | /* XXX Increase if/when we support large SCSI commands. */ |
| 1839 | if (xs->cmdlen > MLY_CMD_SCSI_SMALL_CDB) { |
| 1840 | printf("%s: cmd too large\n" , device_xname(mly->mly_dv)); |
| 1841 | xs->error = XS_DRIVER_STUFFUP; |
| 1842 | scsipi_done(xs); |
| 1843 | break; |
| 1844 | } |
| 1845 | #endif |
| 1846 | |
| 1847 | if (mly_ccb_alloc(mly, &mc)) { |
| 1848 | xs->error = XS_RESOURCE_SHORTAGE; |
| 1849 | scsipi_done(xs); |
| 1850 | break; |
| 1851 | } |
| 1852 | |
| 1853 | /* Build the command. */ |
| 1854 | mc->mc_data = xs->data; |
| 1855 | mc->mc_length = xs->datalen; |
| 1856 | mc->mc_complete = mly_scsipi_complete; |
| 1857 | mc->mc_private = xs; |
| 1858 | |
| 1859 | /* Build the packet for the controller. */ |
| 1860 | ss = &mc->mc_packet->scsi_small; |
| 1861 | ss->opcode = MDACMD_SCSI; |
| 1862 | #ifdef notdef |
| 1863 | /* |
| 1864 | * XXX FreeBSD does this, but it doesn't fix anything, |
| 1865 | * XXX and appears potentially harmful. |
| 1866 | */ |
| 1867 | ss->command_control |= MLY_CMDCTL_DISABLE_DISCONNECT; |
| 1868 | #endif |
| 1869 | |
| 1870 | ss->data_size = htole32(xs->datalen); |
| 1871 | _lto3l(MLY_PHYADDR(0, chan->chan_channel, |
| 1872 | periph->periph_target, periph->periph_lun), ss->addr); |
| 1873 | |
| 1874 | if (xs->timeout < 60 * 1000) |
| 1875 | ss->timeout = xs->timeout / 1000 | |
| 1876 | MLY_TIMEOUT_SECONDS; |
| 1877 | else if (xs->timeout < 60 * 60 * 1000) |
| 1878 | ss->timeout = xs->timeout / (60 * 1000) | |
| 1879 | MLY_TIMEOUT_MINUTES; |
| 1880 | else |
| 1881 | ss->timeout = xs->timeout / (60 * 60 * 1000) | |
| 1882 | MLY_TIMEOUT_HOURS; |
| 1883 | |
| 1884 | ss->maximum_sense_size = sizeof(xs->sense); |
| 1885 | ss->cdb_length = xs->cmdlen; |
| 1886 | memcpy(ss->cdb, xs->cmd, xs->cmdlen); |
| 1887 | |
| 1888 | if (mc->mc_length != 0) { |
| 1889 | if ((xs->xs_control & XS_CTL_DATA_OUT) != 0) |
| 1890 | mc->mc_flags |= MLY_CCB_DATAOUT; |
| 1891 | else /* if ((xs->xs_control & XS_CTL_DATA_IN) != 0) */ |
| 1892 | mc->mc_flags |= MLY_CCB_DATAIN; |
| 1893 | |
| 1894 | if (mly_ccb_map(mly, mc) != 0) { |
| 1895 | xs->error = XS_DRIVER_STUFFUP; |
| 1896 | mly_ccb_free(mly, mc); |
| 1897 | scsipi_done(xs); |
| 1898 | break; |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | /* |
| 1903 | * Give the command to the controller. |
| 1904 | */ |
| 1905 | if ((xs->xs_control & XS_CTL_POLL) != 0) { |
| 1906 | if (mly_ccb_poll(mly, mc, xs->timeout + 5000)) { |
| 1907 | xs->error = XS_REQUEUE; |
| 1908 | if (mc->mc_length != 0) |
| 1909 | mly_ccb_unmap(mly, mc); |
| 1910 | mly_ccb_free(mly, mc); |
| 1911 | scsipi_done(xs); |
| 1912 | } |
| 1913 | } else |
| 1914 | mly_ccb_enqueue(mly, mc); |
| 1915 | |
| 1916 | break; |
| 1917 | |
| 1918 | case ADAPTER_REQ_GROW_RESOURCES: |
| 1919 | /* |
| 1920 | * Not supported. |
| 1921 | */ |
| 1922 | break; |
| 1923 | |
| 1924 | case ADAPTER_REQ_SET_XFER_MODE: |
| 1925 | /* |
| 1926 | * We can't change the transfer mode, but at least let |
| 1927 | * scsipi know what the adapter has negotiated. |
| 1928 | */ |
| 1929 | mly_get_xfer_mode(mly, chan->chan_channel, arg); |
| 1930 | break; |
| 1931 | } |
| 1932 | } |
| 1933 | |
| 1934 | /* |
| 1935 | * Handle completion of a SCSI command. |
| 1936 | */ |
| 1937 | static void |
| 1938 | mly_scsipi_complete(struct mly_softc *mly, struct mly_ccb *mc) |
| 1939 | { |
| 1940 | struct scsipi_xfer *xs; |
| 1941 | struct scsipi_channel *chan; |
| 1942 | struct scsipi_inquiry_data *inq; |
| 1943 | struct mly_btl *btl; |
| 1944 | int target, sl, s; |
| 1945 | const char *p; |
| 1946 | |
| 1947 | xs = mc->mc_private; |
| 1948 | xs->status = mc->mc_status; |
| 1949 | |
| 1950 | /* |
| 1951 | * XXX The `resid' value as returned by the controller appears to be |
| 1952 | * bogus, so we always set it to zero. Is it perhaps the transfer |
| 1953 | * count? |
| 1954 | */ |
| 1955 | xs->resid = 0; /* mc->mc_resid; */ |
| 1956 | |
| 1957 | if (mc->mc_length != 0) |
| 1958 | mly_ccb_unmap(mly, mc); |
| 1959 | |
| 1960 | switch (mc->mc_status) { |
| 1961 | case SCSI_OK: |
| 1962 | /* |
| 1963 | * In order to report logical device type and status, we |
| 1964 | * overwrite the result of the INQUIRY command to logical |
| 1965 | * devices. |
| 1966 | */ |
| 1967 | if (xs->cmd->opcode == INQUIRY) { |
| 1968 | chan = xs->xs_periph->periph_channel; |
| 1969 | target = xs->xs_periph->periph_target; |
| 1970 | btl = &mly->mly_btl[chan->chan_channel][target]; |
| 1971 | |
| 1972 | s = splbio(); |
| 1973 | if ((btl->mb_flags & MLY_BTL_LOGICAL) != 0) { |
| 1974 | inq = (struct scsipi_inquiry_data *)xs->data; |
| 1975 | mly_padstr(inq->vendor, "MYLEX" , 8); |
| 1976 | p = mly_describe_code(mly_table_device_type, |
| 1977 | btl->mb_type); |
| 1978 | mly_padstr(inq->product, p, 16); |
| 1979 | p = mly_describe_code(mly_table_device_state, |
| 1980 | btl->mb_state); |
| 1981 | mly_padstr(inq->revision, p, 4); |
| 1982 | } |
| 1983 | splx(s); |
| 1984 | } |
| 1985 | |
| 1986 | xs->error = XS_NOERROR; |
| 1987 | break; |
| 1988 | |
| 1989 | case SCSI_CHECK: |
| 1990 | sl = mc->mc_sense; |
| 1991 | if (sl > sizeof(xs->sense.scsi_sense)) |
| 1992 | sl = sizeof(xs->sense.scsi_sense); |
| 1993 | memcpy(&xs->sense.scsi_sense, mc->mc_packet, sl); |
| 1994 | xs->error = XS_SENSE; |
| 1995 | break; |
| 1996 | |
| 1997 | case SCSI_BUSY: |
| 1998 | case SCSI_QUEUE_FULL: |
| 1999 | xs->error = XS_BUSY; |
| 2000 | break; |
| 2001 | |
| 2002 | default: |
| 2003 | printf("%s: unknown SCSI status 0x%x\n" , |
| 2004 | device_xname(mly->mly_dv), xs->status); |
| 2005 | xs->error = XS_DRIVER_STUFFUP; |
| 2006 | break; |
| 2007 | } |
| 2008 | |
| 2009 | mly_ccb_free(mly, mc); |
| 2010 | scsipi_done(xs); |
| 2011 | } |
| 2012 | |
| 2013 | /* |
| 2014 | * Notify scsipi about a target's transfer mode. |
| 2015 | */ |
| 2016 | static void |
| 2017 | mly_get_xfer_mode(struct mly_softc *mly, int bus, struct scsipi_xfer_mode *xm) |
| 2018 | { |
| 2019 | struct mly_btl *btl; |
| 2020 | int s; |
| 2021 | |
| 2022 | btl = &mly->mly_btl[bus][xm->xm_target]; |
| 2023 | xm->xm_mode = 0; |
| 2024 | |
| 2025 | s = splbio(); |
| 2026 | |
| 2027 | if ((btl->mb_flags & MLY_BTL_PHYSICAL) != 0) { |
| 2028 | if (btl->mb_speed == 0) { |
| 2029 | xm->xm_period = 0; |
| 2030 | xm->xm_offset = 0; |
| 2031 | } else { |
| 2032 | xm->xm_period = 12; /* XXX */ |
| 2033 | xm->xm_offset = 8; /* XXX */ |
| 2034 | xm->xm_mode |= PERIPH_CAP_SYNC; /* XXX */ |
| 2035 | } |
| 2036 | |
| 2037 | switch (btl->mb_width) { |
| 2038 | case 32: |
| 2039 | xm->xm_mode = PERIPH_CAP_WIDE32; |
| 2040 | break; |
| 2041 | case 16: |
| 2042 | xm->xm_mode = PERIPH_CAP_WIDE16; |
| 2043 | break; |
| 2044 | default: |
| 2045 | xm->xm_mode = 0; |
| 2046 | break; |
| 2047 | } |
| 2048 | } else /* ((btl->mb_flags & MLY_BTL_LOGICAL) != 0) */ { |
| 2049 | xm->xm_mode = PERIPH_CAP_WIDE16 | PERIPH_CAP_SYNC; |
| 2050 | xm->xm_period = 12; |
| 2051 | xm->xm_offset = 8; |
| 2052 | } |
| 2053 | |
| 2054 | if ((btl->mb_flags & MLY_BTL_TQING) != 0) |
| 2055 | xm->xm_mode |= PERIPH_CAP_TQING; |
| 2056 | |
| 2057 | splx(s); |
| 2058 | |
| 2059 | scsipi_async_event(&mly->mly_chans[bus], ASYNC_EVENT_XFER_MODE, xm); |
| 2060 | } |
| 2061 | |
| 2062 | /* |
| 2063 | * ioctl hook; used here only to initiate low-level rescans. |
| 2064 | */ |
| 2065 | static int |
| 2066 | mly_scsipi_ioctl(struct scsipi_channel *chan, u_long cmd, void *data, |
| 2067 | int flag, struct proc *p) |
| 2068 | { |
| 2069 | struct mly_softc *mly; |
| 2070 | int rv; |
| 2071 | |
| 2072 | mly = device_private(chan->chan_adapter->adapt_dev); |
| 2073 | |
| 2074 | switch (cmd) { |
| 2075 | case SCBUSIOLLSCAN: |
| 2076 | mly_scan_channel(mly, chan->chan_channel); |
| 2077 | rv = 0; |
| 2078 | break; |
| 2079 | default: |
| 2080 | rv = ENOTTY; |
| 2081 | break; |
| 2082 | } |
| 2083 | |
| 2084 | return (rv); |
| 2085 | } |
| 2086 | |
| 2087 | /* |
| 2088 | * Handshake with the firmware while the card is being initialized. |
| 2089 | */ |
| 2090 | static int |
| 2091 | mly_fwhandshake(struct mly_softc *mly) |
| 2092 | { |
| 2093 | u_int8_t error; |
| 2094 | int spinup; |
| 2095 | |
| 2096 | spinup = 0; |
| 2097 | |
| 2098 | /* Set HM_STSACK and let the firmware initialize. */ |
| 2099 | mly_outb(mly, mly->mly_idbr, MLY_HM_STSACK); |
| 2100 | DELAY(1000); /* too short? */ |
| 2101 | |
| 2102 | /* If HM_STSACK is still true, the controller is initializing. */ |
| 2103 | if (!mly_idbr_true(mly, MLY_HM_STSACK)) |
| 2104 | return (0); |
| 2105 | |
| 2106 | printf("%s: controller initialization started\n" , |
| 2107 | device_xname(mly->mly_dv)); |
| 2108 | |
| 2109 | /* |
| 2110 | * Spin waiting for initialization to finish, or for a message to be |
| 2111 | * delivered. |
| 2112 | */ |
| 2113 | while (mly_idbr_true(mly, MLY_HM_STSACK)) { |
| 2114 | /* Check for a message */ |
| 2115 | if (!mly_error_valid(mly)) |
| 2116 | continue; |
| 2117 | |
| 2118 | error = mly_inb(mly, mly->mly_error_status) & ~MLY_MSG_EMPTY; |
| 2119 | (void)mly_inb(mly, mly->mly_cmd_mailbox); |
| 2120 | (void)mly_inb(mly, mly->mly_cmd_mailbox + 1); |
| 2121 | |
| 2122 | switch (error) { |
| 2123 | case MLY_MSG_SPINUP: |
| 2124 | if (!spinup) { |
| 2125 | printf("%s: drive spinup in progress\n" , |
| 2126 | device_xname(mly->mly_dv)); |
| 2127 | spinup = 1; |
| 2128 | } |
| 2129 | break; |
| 2130 | |
| 2131 | case MLY_MSG_RACE_RECOVERY_FAIL: |
| 2132 | printf("%s: mirror race recovery failed - \n" , |
| 2133 | device_xname(mly->mly_dv)); |
| 2134 | printf("%s: one or more drives offline\n" , |
| 2135 | device_xname(mly->mly_dv)); |
| 2136 | break; |
| 2137 | |
| 2138 | case MLY_MSG_RACE_IN_PROGRESS: |
| 2139 | printf("%s: mirror race recovery in progress\n" , |
| 2140 | device_xname(mly->mly_dv)); |
| 2141 | break; |
| 2142 | |
| 2143 | case MLY_MSG_RACE_ON_CRITICAL: |
| 2144 | printf("%s: mirror race recovery on critical drive\n" , |
| 2145 | device_xname(mly->mly_dv)); |
| 2146 | break; |
| 2147 | |
| 2148 | case MLY_MSG_PARITY_ERROR: |
| 2149 | printf("%s: FATAL MEMORY PARITY ERROR\n" , |
| 2150 | device_xname(mly->mly_dv)); |
| 2151 | return (ENXIO); |
| 2152 | |
| 2153 | default: |
| 2154 | printf("%s: unknown initialization code 0x%x\n" , |
| 2155 | device_xname(mly->mly_dv), error); |
| 2156 | break; |
| 2157 | } |
| 2158 | } |
| 2159 | |
| 2160 | return (0); |
| 2161 | } |
| 2162 | |
| 2163 | /* |
| 2164 | * Space-fill a character string |
| 2165 | */ |
| 2166 | static void |
| 2167 | mly_padstr(char *dst, const char *src, int len) |
| 2168 | { |
| 2169 | |
| 2170 | while (len-- > 0) { |
| 2171 | if (*src != '\0') |
| 2172 | *dst++ = *src++; |
| 2173 | else |
| 2174 | *dst++ = ' '; |
| 2175 | } |
| 2176 | } |
| 2177 | |
| 2178 | /* |
| 2179 | * Allocate DMA safe memory. |
| 2180 | */ |
| 2181 | static int |
| 2182 | mly_dmamem_alloc(struct mly_softc *mly, int size, bus_dmamap_t *dmamap, |
| 2183 | void **kva, bus_addr_t *paddr, bus_dma_segment_t *seg) |
| 2184 | { |
| 2185 | int rseg, rv, state; |
| 2186 | |
| 2187 | state = 0; |
| 2188 | |
| 2189 | if ((rv = bus_dmamem_alloc(mly->mly_dmat, size, PAGE_SIZE, 0, |
| 2190 | seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { |
| 2191 | aprint_error_dev(mly->mly_dv, "dmamem_alloc = %d\n" , rv); |
| 2192 | goto bad; |
| 2193 | } |
| 2194 | |
| 2195 | state++; |
| 2196 | |
| 2197 | if ((rv = bus_dmamem_map(mly->mly_dmat, seg, 1, size, kva, |
| 2198 | BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { |
| 2199 | aprint_error_dev(mly->mly_dv, "dmamem_map = %d\n" , rv); |
| 2200 | goto bad; |
| 2201 | } |
| 2202 | |
| 2203 | state++; |
| 2204 | |
| 2205 | if ((rv = bus_dmamap_create(mly->mly_dmat, size, size, 1, 0, |
| 2206 | BUS_DMA_NOWAIT, dmamap)) != 0) { |
| 2207 | aprint_error_dev(mly->mly_dv, "dmamap_create = %d\n" , rv); |
| 2208 | goto bad; |
| 2209 | } |
| 2210 | |
| 2211 | state++; |
| 2212 | |
| 2213 | if ((rv = bus_dmamap_load(mly->mly_dmat, *dmamap, *kva, size, |
| 2214 | NULL, BUS_DMA_NOWAIT)) != 0) { |
| 2215 | aprint_error_dev(mly->mly_dv, "dmamap_load = %d\n" , rv); |
| 2216 | goto bad; |
| 2217 | } |
| 2218 | |
| 2219 | *paddr = (*dmamap)->dm_segs[0].ds_addr; |
| 2220 | memset(*kva, 0, size); |
| 2221 | return (0); |
| 2222 | |
| 2223 | bad: |
| 2224 | if (state > 2) |
| 2225 | bus_dmamap_destroy(mly->mly_dmat, *dmamap); |
| 2226 | if (state > 1) |
| 2227 | bus_dmamem_unmap(mly->mly_dmat, *kva, size); |
| 2228 | if (state > 0) |
| 2229 | bus_dmamem_free(mly->mly_dmat, seg, 1); |
| 2230 | |
| 2231 | return (rv); |
| 2232 | } |
| 2233 | |
| 2234 | /* |
| 2235 | * Free DMA safe memory. |
| 2236 | */ |
| 2237 | static void |
| 2238 | mly_dmamem_free(struct mly_softc *mly, int size, bus_dmamap_t dmamap, |
| 2239 | void *kva, bus_dma_segment_t *seg) |
| 2240 | { |
| 2241 | |
| 2242 | bus_dmamap_unload(mly->mly_dmat, dmamap); |
| 2243 | bus_dmamap_destroy(mly->mly_dmat, dmamap); |
| 2244 | bus_dmamem_unmap(mly->mly_dmat, kva, size); |
| 2245 | bus_dmamem_free(mly->mly_dmat, seg, 1); |
| 2246 | } |
| 2247 | |
| 2248 | |
| 2249 | /* |
| 2250 | * Accept an open operation on the control device. |
| 2251 | */ |
| 2252 | int |
| 2253 | mlyopen(dev_t dev, int flag, int mode, struct lwp *l) |
| 2254 | { |
| 2255 | struct mly_softc *mly; |
| 2256 | |
| 2257 | if ((mly = device_lookup_private(&mly_cd, minor(dev))) == NULL) |
| 2258 | return (ENXIO); |
| 2259 | if ((mly->mly_state & MLY_STATE_INITOK) == 0) |
| 2260 | return (ENXIO); |
| 2261 | if ((mly->mly_state & MLY_STATE_OPEN) != 0) |
| 2262 | return (EBUSY); |
| 2263 | |
| 2264 | mly->mly_state |= MLY_STATE_OPEN; |
| 2265 | return (0); |
| 2266 | } |
| 2267 | |
| 2268 | /* |
| 2269 | * Accept the last close on the control device. |
| 2270 | */ |
| 2271 | int |
| 2272 | mlyclose(dev_t dev, int flag, int mode, |
| 2273 | struct lwp *l) |
| 2274 | { |
| 2275 | struct mly_softc *mly; |
| 2276 | |
| 2277 | mly = device_lookup_private(&mly_cd, minor(dev)); |
| 2278 | mly->mly_state &= ~MLY_STATE_OPEN; |
| 2279 | return (0); |
| 2280 | } |
| 2281 | |
| 2282 | /* |
| 2283 | * Handle control operations. |
| 2284 | */ |
| 2285 | int |
| 2286 | mlyioctl(dev_t dev, u_long cmd, void *data, int flag, |
| 2287 | struct lwp *l) |
| 2288 | { |
| 2289 | struct mly_softc *mly; |
| 2290 | int rv; |
| 2291 | |
| 2292 | mly = device_lookup_private(&mly_cd, minor(dev)); |
| 2293 | |
| 2294 | switch (cmd) { |
| 2295 | case MLYIO_COMMAND: |
| 2296 | rv = kauth_authorize_device_passthru(l->l_cred, dev, |
| 2297 | KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_ALL, data); |
| 2298 | if (rv) |
| 2299 | break; |
| 2300 | |
| 2301 | rv = mly_user_command(mly, (void *)data); |
| 2302 | break; |
| 2303 | case MLYIO_HEALTH: |
| 2304 | rv = mly_user_health(mly, (void *)data); |
| 2305 | break; |
| 2306 | default: |
| 2307 | rv = ENOTTY; |
| 2308 | break; |
| 2309 | } |
| 2310 | |
| 2311 | return (rv); |
| 2312 | } |
| 2313 | |
| 2314 | /* |
| 2315 | * Execute a command passed in from userspace. |
| 2316 | * |
| 2317 | * The control structure contains the actual command for the controller, as |
| 2318 | * well as the user-space data pointer and data size, and an optional sense |
| 2319 | * buffer size/pointer. On completion, the data size is adjusted to the |
| 2320 | * command residual, and the sense buffer size to the size of the returned |
| 2321 | * sense data. |
| 2322 | */ |
| 2323 | static int |
| 2324 | mly_user_command(struct mly_softc *mly, struct mly_user_command *uc) |
| 2325 | { |
| 2326 | struct mly_ccb *mc; |
| 2327 | int rv, mapped; |
| 2328 | |
| 2329 | if ((rv = mly_ccb_alloc(mly, &mc)) != 0) |
| 2330 | return (rv); |
| 2331 | |
| 2332 | mapped = 0; |
| 2333 | mc->mc_data = NULL; |
| 2334 | |
| 2335 | /* |
| 2336 | * Handle data size/direction. |
| 2337 | */ |
| 2338 | if ((mc->mc_length = abs(uc->DataTransferLength)) != 0) { |
| 2339 | if (mc->mc_length > MAXPHYS) { |
| 2340 | rv = EINVAL; |
| 2341 | goto out; |
| 2342 | } |
| 2343 | |
| 2344 | mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_WAITOK); |
| 2345 | if (mc->mc_data == NULL) { |
| 2346 | rv = ENOMEM; |
| 2347 | goto out; |
| 2348 | } |
| 2349 | |
| 2350 | if (uc->DataTransferLength > 0) { |
| 2351 | mc->mc_flags |= MLY_CCB_DATAIN; |
| 2352 | memset(mc->mc_data, 0, mc->mc_length); |
| 2353 | } |
| 2354 | |
| 2355 | if (uc->DataTransferLength < 0) { |
| 2356 | mc->mc_flags |= MLY_CCB_DATAOUT; |
| 2357 | rv = copyin(uc->DataTransferBuffer, mc->mc_data, |
| 2358 | mc->mc_length); |
| 2359 | if (rv != 0) |
| 2360 | goto out; |
| 2361 | } |
| 2362 | |
| 2363 | if ((rv = mly_ccb_map(mly, mc)) != 0) |
| 2364 | goto out; |
| 2365 | mapped = 1; |
| 2366 | } |
| 2367 | |
| 2368 | /* Copy in the command and execute it. */ |
| 2369 | memcpy(mc->mc_packet, &uc->CommandMailbox, sizeof(uc->CommandMailbox)); |
| 2370 | |
| 2371 | if ((rv = mly_ccb_wait(mly, mc, 60000)) != 0) |
| 2372 | goto out; |
| 2373 | |
| 2374 | /* Return the data to userspace. */ |
| 2375 | if (uc->DataTransferLength > 0) { |
| 2376 | rv = copyout(mc->mc_data, uc->DataTransferBuffer, |
| 2377 | mc->mc_length); |
| 2378 | if (rv != 0) |
| 2379 | goto out; |
| 2380 | } |
| 2381 | |
| 2382 | /* Return the sense buffer to userspace. */ |
| 2383 | if (uc->RequestSenseLength > 0 && mc->mc_sense > 0) { |
| 2384 | rv = copyout(mc->mc_packet, uc->RequestSenseBuffer, |
| 2385 | min(uc->RequestSenseLength, mc->mc_sense)); |
| 2386 | if (rv != 0) |
| 2387 | goto out; |
| 2388 | } |
| 2389 | |
| 2390 | /* Return command results to userspace (caller will copy out). */ |
| 2391 | uc->DataTransferLength = mc->mc_resid; |
| 2392 | uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); |
| 2393 | uc->CommandStatus = mc->mc_status; |
| 2394 | rv = 0; |
| 2395 | |
| 2396 | out: |
| 2397 | if (mapped) |
| 2398 | mly_ccb_unmap(mly, mc); |
| 2399 | if (mc->mc_data != NULL) |
| 2400 | free(mc->mc_data, M_DEVBUF); |
| 2401 | mly_ccb_free(mly, mc); |
| 2402 | |
| 2403 | return (rv); |
| 2404 | } |
| 2405 | |
| 2406 | /* |
| 2407 | * Return health status to userspace. If the health change index in the |
| 2408 | * user structure does not match that currently exported by the controller, |
| 2409 | * we return the current status immediately. Otherwise, we block until |
| 2410 | * either interrupted or new status is delivered. |
| 2411 | */ |
| 2412 | static int |
| 2413 | mly_user_health(struct mly_softc *mly, struct mly_user_health *uh) |
| 2414 | { |
| 2415 | struct mly_health_status mh; |
| 2416 | int rv, s; |
| 2417 | |
| 2418 | /* Fetch the current health status from userspace. */ |
| 2419 | rv = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh)); |
| 2420 | if (rv != 0) |
| 2421 | return (rv); |
| 2422 | |
| 2423 | /* spin waiting for a status update */ |
| 2424 | s = splbio(); |
| 2425 | if (mly->mly_event_change == mh.change_counter) |
| 2426 | rv = tsleep(&mly->mly_event_change, PRIBIO | PCATCH, |
| 2427 | "mlyhealth" , 0); |
| 2428 | splx(s); |
| 2429 | |
| 2430 | if (rv == 0) { |
| 2431 | /* |
| 2432 | * Copy the controller's health status buffer out (there is |
| 2433 | * a race here if it changes again). |
| 2434 | */ |
| 2435 | rv = copyout(&mly->mly_mmbox->mmm_health.status, |
| 2436 | uh->HealthStatusBuffer, sizeof(uh->HealthStatusBuffer)); |
| 2437 | } |
| 2438 | |
| 2439 | return (rv); |
| 2440 | } |
| 2441 | |