mlx_pci.c revision 1.23
1 /* $NetBSD: mlx_pci.c,v 1.23 2009/11/26 15:17:10 njoly 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. 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) 1999 Michael Smith 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 * 57 * from FreeBSD: mlx_pci.c,v 1.4.2.4 2000/10/28 10:48:09 msmith Exp 58 */ 59 60 /* 61 * PCI front-end for the mlx(4) driver. 62 */ 63 64 #include <sys/cdefs.h> 65 __KERNEL_RCSID(0, "$NetBSD: mlx_pci.c,v 1.23 2009/11/26 15:17:10 njoly Exp $"); 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/kernel.h> 70 #include <sys/device.h> 71 #include <sys/queue.h> 72 #include <sys/callout.h> 73 74 #include <machine/endian.h> 75 #include <sys/bus.h> 76 77 #include <dev/ic/mlxreg.h> 78 #include <dev/ic/mlxio.h> 79 #include <dev/ic/mlxvar.h> 80 81 #include <dev/pci/pcireg.h> 82 #include <dev/pci/pcivar.h> 83 #include <dev/pci/pcidevs.h> 84 85 static void mlx_pci_attach(device_t, device_t, void *); 86 static int mlx_pci_match(device_t, cfdata_t, void *); 87 static const struct mlx_pci_ident *mlx_pci_findmpi(struct pci_attach_args *); 88 89 static int mlx_v3_submit(struct mlx_softc *, struct mlx_ccb *); 90 static int mlx_v3_findcomplete(struct mlx_softc *, u_int *, u_int *); 91 static void mlx_v3_intaction(struct mlx_softc *, int); 92 static int mlx_v3_fw_handshake(struct mlx_softc *, int *, int *, int *); 93 #ifdef MLX_RESET 94 static int mlx_v3_reset(struct mlx_softc *); 95 #endif 96 97 static int mlx_v4_submit(struct mlx_softc *, struct mlx_ccb *); 98 static int mlx_v4_findcomplete(struct mlx_softc *, u_int *, u_int *); 99 static void mlx_v4_intaction(struct mlx_softc *, int); 100 static int mlx_v4_fw_handshake(struct mlx_softc *, int *, int *, int *); 101 102 static int mlx_v5_submit(struct mlx_softc *, struct mlx_ccb *); 103 static int mlx_v5_findcomplete(struct mlx_softc *, u_int *, u_int *); 104 static void mlx_v5_intaction(struct mlx_softc *, int); 105 static int mlx_v5_fw_handshake(struct mlx_softc *, int *, int *, int *); 106 107 static struct mlx_pci_ident { 108 u_short mpi_vendor; 109 u_short mpi_product; 110 u_short mpi_subvendor; 111 u_short mpi_subproduct; 112 int mpi_iftype; 113 } const mlx_pci_ident[] = { 114 { 115 PCI_VENDOR_MYLEX, 116 PCI_PRODUCT_MYLEX_RAID_V2, 117 0x0000, 118 0x0000, 119 2, 120 }, 121 { 122 PCI_VENDOR_MYLEX, 123 PCI_PRODUCT_MYLEX_RAID_V3, 124 0x0000, 125 0x0000, 126 3, 127 }, 128 { 129 PCI_VENDOR_MYLEX, 130 PCI_PRODUCT_MYLEX_RAID_V4, 131 0x0000, 132 0x0000, 133 4, 134 }, 135 { 136 PCI_VENDOR_DEC, 137 PCI_PRODUCT_DEC_SWXCR, 138 PCI_VENDOR_MYLEX, 139 PCI_PRODUCT_MYLEX_RAID_V5, 140 5, 141 }, 142 }; 143 144 CFATTACH_DECL(mlx_pci, sizeof(struct mlx_softc), 145 mlx_pci_match, mlx_pci_attach, NULL, NULL); 146 147 /* 148 * Try to find a `mlx_pci_ident' entry corresponding to this board. 149 */ 150 static const struct mlx_pci_ident * 151 mlx_pci_findmpi(struct pci_attach_args *pa) 152 { 153 const struct mlx_pci_ident *mpi, *maxmpi; 154 pcireg_t reg; 155 156 mpi = mlx_pci_ident; 157 maxmpi = mpi + sizeof(mlx_pci_ident) / sizeof(mlx_pci_ident[0]); 158 159 for (; mpi < maxmpi; mpi++) { 160 if (PCI_VENDOR(pa->pa_id) != mpi->mpi_vendor || 161 PCI_PRODUCT(pa->pa_id) != mpi->mpi_product) 162 continue; 163 164 if (mpi->mpi_subvendor == 0x0000) 165 return (mpi); 166 167 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 168 169 if (PCI_VENDOR(reg) == mpi->mpi_subvendor && 170 PCI_PRODUCT(reg) == mpi->mpi_subproduct) 171 return (mpi); 172 } 173 174 return (NULL); 175 } 176 177 /* 178 * Match a supported board. 179 */ 180 static int 181 mlx_pci_match(device_t parent, cfdata_t cfdata, void *aux) 182 { 183 184 return (mlx_pci_findmpi(aux) != NULL); 185 } 186 187 /* 188 * Attach a supported board. 189 */ 190 static void 191 mlx_pci_attach(device_t parent, device_t self, void *aux) 192 { 193 struct pci_attach_args *pa; 194 struct mlx_softc *mlx; 195 pci_chipset_tag_t pc; 196 pci_intr_handle_t ih; 197 bus_space_handle_t memh, ioh; 198 bus_space_tag_t memt, iot; 199 pcireg_t reg; 200 const char *intrstr; 201 int ior, memr, i; 202 const struct mlx_pci_ident *mpi; 203 204 mlx = device_private(self); 205 pa = aux; 206 pc = pa->pa_pc; 207 mpi = mlx_pci_findmpi(aux); 208 209 mlx->mlx_dmat = pa->pa_dmat; 210 mlx->mlx_ci.ci_iftype = mpi->mpi_iftype; 211 212 printf(": Mylex RAID (v%d interface)\n", mpi->mpi_iftype); 213 214 /* 215 * Map the PCI register window. 216 */ 217 memr = -1; 218 ior = -1; 219 220 for (i = 0x10; i <= 0x14; i += 4) { 221 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i); 222 223 if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) { 224 if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0) 225 ior = i; 226 } else { 227 if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0) 228 memr = i; 229 } 230 } 231 232 if (memr != -1) 233 if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0, 234 &memt, &memh, NULL, NULL)) 235 memr = -1; 236 if (ior != -1) 237 if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0, 238 &iot, &ioh, NULL, NULL)) 239 ior = -1; 240 241 if (memr != -1) { 242 mlx->mlx_iot = memt; 243 mlx->mlx_ioh = memh; 244 } else if (ior != -1) { 245 mlx->mlx_iot = iot; 246 mlx->mlx_ioh = ioh; 247 } else { 248 aprint_error_dev(self, "can't map i/o or memory space\n"); 249 return; 250 } 251 252 /* Enable the device. */ 253 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 254 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 255 reg | PCI_COMMAND_MASTER_ENABLE); 256 257 /* Map and establish the interrupt. */ 258 if (pci_intr_map(pa, &ih)) { 259 aprint_error_dev(self, "can't map interrupt\n"); 260 return; 261 } 262 intrstr = pci_intr_string(pc, ih); 263 mlx->mlx_ih = pci_intr_establish(pc, ih, IPL_BIO, mlx_intr, mlx); 264 if (mlx->mlx_ih == NULL) { 265 aprint_error_dev(self, "can't establish interrupt"); 266 if (intrstr != NULL) 267 aprint_error(" at %s", intrstr); 268 aprint_error("\n"); 269 return; 270 } 271 272 /* Select linkage based on controller interface type. */ 273 switch (mlx->mlx_ci.ci_iftype) { 274 case 2: 275 case 3: 276 mlx->mlx_submit = mlx_v3_submit; 277 mlx->mlx_findcomplete = mlx_v3_findcomplete; 278 mlx->mlx_intaction = mlx_v3_intaction; 279 mlx->mlx_fw_handshake = mlx_v3_fw_handshake; 280 #ifdef MLX_RESET 281 mlx->mlx_reset = mlx_v3_reset; 282 #endif 283 break; 284 285 case 4: 286 mlx->mlx_submit = mlx_v4_submit; 287 mlx->mlx_findcomplete = mlx_v4_findcomplete; 288 mlx->mlx_intaction = mlx_v4_intaction; 289 mlx->mlx_fw_handshake = mlx_v4_fw_handshake; 290 break; 291 292 case 5: 293 mlx->mlx_submit = mlx_v5_submit; 294 mlx->mlx_findcomplete = mlx_v5_findcomplete; 295 mlx->mlx_intaction = mlx_v5_intaction; 296 mlx->mlx_fw_handshake = mlx_v5_fw_handshake; 297 break; 298 } 299 300 mlx_init(mlx, intrstr); 301 } 302 303 /* 304 * ================= V3 interface linkage ================= 305 */ 306 307 /* 308 * Try to give (mc) to the controller. Returns 1 if successful, 0 on 309 * failure (the controller is not ready to take a command). 310 * 311 * Must be called at splbio or in a fashion that prevents reentry. 312 */ 313 static int 314 mlx_v3_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) 315 { 316 317 /* Ready for our command? */ 318 if ((mlx_inb(mlx, MLX_V3REG_IDB) & MLX_V3_IDB_FULL) == 0) { 319 /* Copy mailbox data to window. */ 320 bus_space_write_region_1(mlx->mlx_iot, mlx->mlx_ioh, 321 MLX_V3REG_MAILBOX, mc->mc_mbox, 13); 322 bus_space_barrier(mlx->mlx_iot, mlx->mlx_ioh, 323 MLX_V3REG_MAILBOX, 13, 324 BUS_SPACE_BARRIER_WRITE); 325 326 /* Post command. */ 327 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_FULL); 328 return (1); 329 } 330 331 return (0); 332 } 333 334 /* 335 * See if a command has been completed, if so acknowledge its completion and 336 * recover the slot number and status code. 337 * 338 * Must be called at splbio or in a fashion that prevents reentry. 339 */ 340 static int 341 mlx_v3_findcomplete(struct mlx_softc *mlx, u_int *slot, u_int *status) 342 { 343 344 /* Status available? */ 345 if ((mlx_inb(mlx, MLX_V3REG_ODB) & MLX_V3_ODB_SAVAIL) != 0) { 346 *slot = mlx_inb(mlx, MLX_V3REG_STATUS_IDENT); 347 *status = mlx_inw(mlx, MLX_V3REG_STATUS); 348 349 /* Acknowledge completion. */ 350 mlx_outb(mlx, MLX_V3REG_ODB, MLX_V3_ODB_SAVAIL); 351 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_SACK); 352 return (1); 353 } 354 355 return (0); 356 } 357 358 /* 359 * Enable/disable interrupts as requested. (No acknowledge required) 360 * 361 * Must be called at splbio or in a fashion that prevents reentry. 362 */ 363 static void 364 mlx_v3_intaction(struct mlx_softc *mlx, int action) 365 { 366 367 mlx_outb(mlx, MLX_V3REG_IE, action != 0); 368 } 369 370 /* 371 * Poll for firmware error codes during controller initialisation. 372 * 373 * Returns 0 if initialisation is complete, 1 if still in progress but no 374 * error has been fetched, 2 if an error has been retrieved. 375 */ 376 static int 377 mlx_v3_fw_handshake(struct mlx_softc *mlx, int *error, int *param1, int *param2) 378 { 379 u_int8_t fwerror; 380 381 /* First time around, clear any hardware completion status. */ 382 if ((mlx->mlx_flags & MLXF_FW_INITTED) == 0) { 383 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_SACK); 384 DELAY(1000); 385 mlx->mlx_flags |= MLXF_FW_INITTED; 386 } 387 388 /* Init in progress? */ 389 if ((mlx_inb(mlx, MLX_V3REG_IDB) & MLX_V3_IDB_INIT_BUSY) == 0) 390 return (0); 391 392 /* Test error value. */ 393 fwerror = mlx_inb(mlx, MLX_V3REG_FWERROR); 394 395 if ((fwerror & MLX_V3_FWERROR_PEND) == 0) 396 return (1); 397 398 /* Mask status pending bit, fetch status. */ 399 *error = fwerror & ~MLX_V3_FWERROR_PEND; 400 *param1 = mlx_inb(mlx, MLX_V3REG_FWERROR_PARAM1); 401 *param2 = mlx_inb(mlx, MLX_V3REG_FWERROR_PARAM2); 402 403 /* Acknowledge. */ 404 mlx_outb(mlx, MLX_V3REG_FWERROR, 0); 405 406 return (2); 407 } 408 409 #ifdef MLX_RESET 410 /* 411 * Reset the controller. Return non-zero on failure. 412 */ 413 static int 414 mlx_v3_reset(struct mlx_softc *mlx) 415 { 416 int i; 417 418 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_SACK); 419 delay(1000000); 420 421 /* Wait up to 2 minutes for the bit to clear. */ 422 for (i = 120; i != 0; i--) { 423 delay(1000000); 424 if ((mlx_inb(mlx, MLX_V3REG_IDB) & MLX_V3_IDB_SACK) == 0) 425 break; 426 } 427 if (i == 0) { 428 /* ZZZ */ 429 printf("mlx0: SACK didn't clear\n"); 430 return (-1); 431 } 432 433 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_RESET); 434 435 /* Wait up to 5 seconds for the bit to clear. */ 436 for (i = 5; i != 0; i--) { 437 delay(1000000); 438 if ((mlx_inb(mlx, MLX_V3REG_IDB) & MLX_V3_IDB_RESET) == 0) 439 break; 440 } 441 if (i == 0) { 442 /* ZZZ */ 443 printf("mlx0: RESET didn't clear\n"); 444 return (-1); 445 } 446 447 return (0); 448 } 449 #endif /* MLX_RESET */ 450 451 /* 452 * ================= V4 interface linkage ================= 453 */ 454 455 /* 456 * Try to give (mc) to the controller. Returns 1 if successful, 0 on 457 * failure (the controller is not ready to take a command). 458 * 459 * Must be called at splbio or in a fashion that prevents reentry. 460 */ 461 static int 462 mlx_v4_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) 463 { 464 465 /* Ready for our command? */ 466 if ((mlx_inl(mlx, MLX_V4REG_IDB) & MLX_V4_IDB_FULL) == 0) { 467 /* Copy mailbox data to window. */ 468 bus_space_write_region_1(mlx->mlx_iot, mlx->mlx_ioh, 469 MLX_V4REG_MAILBOX, mc->mc_mbox, 13); 470 bus_space_barrier(mlx->mlx_iot, mlx->mlx_ioh, 471 MLX_V4REG_MAILBOX, 13, 472 BUS_SPACE_BARRIER_WRITE); 473 474 /* Post command. */ 475 mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_HWMBOX_CMD); 476 return (1); 477 } 478 479 return (0); 480 } 481 482 /* 483 * See if a command has been completed, if so acknowledge its completion and 484 * recover the slot number and status code. 485 * 486 * Must be called at splbio or in a fashion that prevents reentry. 487 */ 488 static int 489 mlx_v4_findcomplete(struct mlx_softc *mlx, u_int *slot, u_int *status) 490 { 491 492 /* Status available? */ 493 if ((mlx_inl(mlx, MLX_V4REG_ODB) & MLX_V4_ODB_HWSAVAIL) != 0) { 494 *slot = mlx_inb(mlx, MLX_V4REG_STATUS_IDENT); 495 *status = mlx_inw(mlx, MLX_V4REG_STATUS); 496 497 /* Acknowledge completion. */ 498 mlx_outl(mlx, MLX_V4REG_ODB, MLX_V4_ODB_HWMBOX_ACK); 499 mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_SACK); 500 return (1); 501 } 502 503 return (0); 504 } 505 506 /* 507 * Enable/disable interrupts as requested. 508 * 509 * Must be called at splbio or in a fashion that prevents reentry. 510 */ 511 static void 512 mlx_v4_intaction(struct mlx_softc *mlx, int action) 513 { 514 u_int32_t ier; 515 516 if (!action) 517 ier = MLX_V4_IE_MASK | MLX_V4_IE_DISINT; 518 else 519 ier = MLX_V4_IE_MASK & ~MLX_V4_IE_DISINT; 520 521 mlx_outl(mlx, MLX_V4REG_IE, ier); 522 } 523 524 /* 525 * Poll for firmware error codes during controller initialisation. 526 * 527 * Returns 0 if initialisation is complete, 1 if still in progress but no 528 * error has been fetched, 2 if an error has been retrieved. 529 */ 530 static int 531 mlx_v4_fw_handshake(struct mlx_softc *mlx, int *error, int *param1, int *param2) 532 { 533 u_int8_t fwerror; 534 535 /* First time around, clear any hardware completion status. */ 536 if ((mlx->mlx_flags & MLXF_FW_INITTED) == 0) { 537 mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_SACK); 538 DELAY(1000); 539 mlx->mlx_flags |= MLXF_FW_INITTED; 540 } 541 542 /* Init in progress? */ 543 if ((mlx_inl(mlx, MLX_V4REG_IDB) & MLX_V4_IDB_INIT_BUSY) == 0) 544 return (0); 545 546 /* Test error value */ 547 fwerror = mlx_inb(mlx, MLX_V4REG_FWERROR); 548 if ((fwerror & MLX_V4_FWERROR_PEND) == 0) 549 return (1); 550 551 /* Mask status pending bit, fetch status. */ 552 *error = fwerror & ~MLX_V4_FWERROR_PEND; 553 *param1 = mlx_inb(mlx, MLX_V4REG_FWERROR_PARAM1); 554 *param2 = mlx_inb(mlx, MLX_V4REG_FWERROR_PARAM2); 555 556 /* Acknowledge. */ 557 mlx_outb(mlx, MLX_V4REG_FWERROR, 0); 558 559 return (2); 560 } 561 562 /* 563 * ================= V5 interface linkage ================= 564 */ 565 566 /* 567 * Try to give (mc) to the controller. Returns 1 if successful, 0 on failure 568 * (the controller is not ready to take a command). 569 * 570 * Must be called at splbio or in a fashion that prevents reentry. 571 */ 572 static int 573 mlx_v5_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) 574 { 575 576 /* Ready for our command? */ 577 if ((mlx_inb(mlx, MLX_V5REG_IDB) & MLX_V5_IDB_EMPTY) != 0) { 578 /* Copy mailbox data to window. */ 579 bus_space_write_region_1(mlx->mlx_iot, mlx->mlx_ioh, 580 MLX_V5REG_MAILBOX, mc->mc_mbox, 13); 581 bus_space_barrier(mlx->mlx_iot, mlx->mlx_ioh, 582 MLX_V5REG_MAILBOX, 13, 583 BUS_SPACE_BARRIER_WRITE); 584 585 /* Post command */ 586 mlx_outb(mlx, MLX_V5REG_IDB, MLX_V5_IDB_HWMBOX_CMD); 587 return (1); 588 } 589 590 return (0); 591 } 592 593 /* 594 * See if a command has been completed, if so acknowledge its completion and 595 * recover the slot number and status code. 596 * 597 * Must be called at splbio or in a fashion that prevents reentry. 598 */ 599 static int 600 mlx_v5_findcomplete(struct mlx_softc *mlx, u_int *slot, u_int *status) 601 { 602 603 /* Status available? */ 604 if ((mlx_inb(mlx, MLX_V5REG_ODB) & MLX_V5_ODB_HWSAVAIL) != 0) { 605 *slot = mlx_inb(mlx, MLX_V5REG_STATUS_IDENT); 606 *status = mlx_inw(mlx, MLX_V5REG_STATUS); 607 608 /* Acknowledge completion. */ 609 mlx_outb(mlx, MLX_V5REG_ODB, MLX_V5_ODB_HWMBOX_ACK); 610 mlx_outb(mlx, MLX_V5REG_IDB, MLX_V5_IDB_SACK); 611 return (1); 612 } 613 614 return (0); 615 } 616 617 /* 618 * Enable/disable interrupts as requested. 619 * 620 * Must be called at splbio or in a fashion that prevents reentry. 621 */ 622 static void 623 mlx_v5_intaction(struct mlx_softc *mlx, int action) 624 { 625 u_int8_t ier; 626 627 if (!action) 628 ier = 0xff & MLX_V5_IE_DISINT; 629 else 630 ier = 0xff & ~MLX_V5_IE_DISINT; 631 632 mlx_outb(mlx, MLX_V5REG_IE, ier); 633 } 634 635 /* 636 * Poll for firmware error codes during controller initialisation. 637 * 638 * Returns 0 if initialisation is complete, 1 if still in progress but no 639 * error has been fetched, 2 if an error has been retrieved. 640 */ 641 static int 642 mlx_v5_fw_handshake(struct mlx_softc *mlx, int *error, int *param1, int *param2) 643 { 644 u_int8_t fwerror; 645 646 /* First time around, clear any hardware completion status. */ 647 if ((mlx->mlx_flags & MLXF_FW_INITTED) == 0) { 648 mlx_outb(mlx, MLX_V5REG_IDB, MLX_V5_IDB_SACK); 649 DELAY(1000); 650 mlx->mlx_flags |= MLXF_FW_INITTED; 651 } 652 653 /* Init in progress? */ 654 if ((mlx_inb(mlx, MLX_V5REG_IDB) & MLX_V5_IDB_INIT_DONE) != 0) 655 return (0); 656 657 /* Test for error value. */ 658 fwerror = mlx_inb(mlx, MLX_V5REG_FWERROR); 659 if ((fwerror & MLX_V5_FWERROR_PEND) == 0) 660 return (1); 661 662 /* Mask status pending bit, fetch status. */ 663 *error = fwerror & ~MLX_V5_FWERROR_PEND; 664 *param1 = mlx_inb(mlx, MLX_V5REG_FWERROR_PARAM1); 665 *param2 = mlx_inb(mlx, MLX_V5REG_FWERROR_PARAM2); 666 667 /* Acknowledge. */ 668 mlx_outb(mlx, MLX_V5REG_FWERROR, 0xff); 669 670 return (2); 671 } 672
Indexes created Thu Sep 25 02:09:54 GMT 2025