mlx_pci.c revision 1.1.2.2
1 /* $NetBSD: mlx_pci.c,v 1.1.2.2 2001/02/11 19:15:58 bouyer 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1999 Michael Smith 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * from FreeBSD: mlx_pci.c,v 1.4.2.4 2000/10/28 10:48:09 msmith Exp 65 */ 66 67 /* 68 * PCI front-end for the mlx(4) driver. 69 */ 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/kernel.h> 74 #include <sys/device.h> 75 #include <sys/queue.h> 76 #include <sys/callout.h> 77 78 #include <machine/endian.h> 79 #include <machine/bus.h> 80 81 #include <dev/ic/mlxreg.h> 82 #include <dev/ic/mlxio.h> 83 #include <dev/ic/mlxvar.h> 84 85 #include <dev/pci/pcireg.h> 86 #include <dev/pci/pcivar.h> 87 #include <dev/pci/pcidevs.h> 88 89 static void mlx_pci_attach(struct device *, struct device *, void *); 90 static int mlx_pci_match(struct device *, struct cfdata *, void *); 91 static const struct mlx_pci_ident *mlx_pci_findmpi(struct pci_attach_args *); 92 93 static int mlx_v3_submit(struct mlx_softc *, struct mlx_ccb *); 94 static int mlx_v3_findcomplete(struct mlx_softc *, u_int *, u_int *); 95 static void mlx_v3_intaction(struct mlx_softc *, int); 96 static int mlx_v3_fw_handshake(struct mlx_softc *, int *, int *, int *); 97 98 static int mlx_v4_submit(struct mlx_softc *, struct mlx_ccb *); 99 static int mlx_v4_findcomplete(struct mlx_softc *, u_int *, u_int *); 100 static void mlx_v4_intaction(struct mlx_softc *, int); 101 static int mlx_v4_fw_handshake(struct mlx_softc *, int *, int *, int *); 102 103 static int mlx_v5_submit(struct mlx_softc *, struct mlx_ccb *); 104 static int mlx_v5_findcomplete(struct mlx_softc *, u_int *, u_int *); 105 static void mlx_v5_intaction(struct mlx_softc *, int); 106 static int mlx_v5_fw_handshake(struct mlx_softc *, int *, int *, int *); 107 108 struct mlx_pci_ident { 109 u_short mpi_vendor; 110 u_short mpi_product; 111 u_short mpi_subvendor; 112 u_short mpi_subproduct; 113 int mpi_iftype; 114 } static const mlx_pci_ident[] = { 115 { 116 PCI_VENDOR_MYLEX, 117 PCI_PRODUCT_MYLEX_RAID_V2, 118 0x0000, 119 0x0000, 120 2, 121 }, 122 { 123 PCI_VENDOR_MYLEX, 124 PCI_PRODUCT_MYLEX_RAID_V3, 125 0x0000, 126 0x0000, 127 3, 128 }, 129 { 130 PCI_VENDOR_MYLEX, 131 PCI_PRODUCT_MYLEX_RAID_V4, 132 0x0000, 133 0x0000, 134 4, 135 }, 136 { 137 PCI_VENDOR_DEC, 138 PCI_PRODUCT_DEC_SWXCR, 139 PCI_VENDOR_MYLEX, 140 PCI_PRODUCT_MYLEX_RAID_V5, 141 5, 142 }, 143 }; 144 145 struct cfattach mlx_pci_ca = { 146 sizeof(struct mlx_softc), mlx_pci_match, mlx_pci_attach 147 }; 148 149 /* 150 * Try to find a `mlx_pci_ident' entry corresponding to this board. 151 */ 152 static const struct mlx_pci_ident * 153 mlx_pci_findmpi(struct pci_attach_args *pa) 154 { 155 const struct mlx_pci_ident *mpi, *maxmpi; 156 pcireg_t reg; 157 158 mpi = mlx_pci_ident; 159 maxmpi = mpi + sizeof(mlx_pci_ident) / sizeof(mlx_pci_ident[0]); 160 161 for (; mpi < maxmpi; mpi++) { 162 if (PCI_VENDOR(pa->pa_id) != mpi->mpi_vendor || 163 PCI_PRODUCT(pa->pa_id) != mpi->mpi_product) 164 continue; 165 166 if (mpi->mpi_subvendor == 0x0000) 167 return (mpi); 168 169 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 170 171 if (PCI_VENDOR(reg) == mpi->mpi_subvendor && 172 PCI_PRODUCT(reg) == mpi->mpi_subproduct) 173 return (mpi); 174 } 175 176 return (NULL); 177 } 178 179 /* 180 * Match a supported board. 181 */ 182 static int 183 mlx_pci_match(struct device *parent, struct cfdata *cfdata, void *aux) 184 { 185 186 return (mlx_pci_findmpi(aux) != NULL); 187 } 188 189 /* 190 * Attach a supported board. 191 */ 192 static void 193 mlx_pci_attach(struct device *parent, struct device *self, void *aux) 194 { 195 struct pci_attach_args *pa; 196 struct mlx_softc *mlx; 197 pci_chipset_tag_t pc; 198 pci_intr_handle_t ih; 199 pcireg_t reg; 200 const char *intrstr; 201 int ior, memr, i; 202 const struct mlx_pci_ident *mpi; 203 204 mlx = (struct mlx_softc *)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_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 &mlx->mlx_iot, &mlx->mlx_ioh, NULL, NULL)) 235 memr = -1; 236 if (ior != -1) 237 if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0, 238 &mlx->mlx_iot, &mlx->mlx_ioh, NULL, NULL)) 239 ior = -1; 240 if (memr == -1 && ior == -1) { 241 printf("%s: can't map i/o or memory space\n", self->dv_xname); 242 return; 243 } 244 245 /* Enable the device. */ 246 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 247 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 248 reg | PCI_COMMAND_MASTER_ENABLE); 249 250 /* Map and establish the interrupt. */ 251 if (pci_intr_map(pa, &ih)) { 252 printf("%s: can't map interrupt\n", self->dv_xname); 253 return; 254 } 255 intrstr = pci_intr_string(pc, ih); 256 mlx->mlx_ih = pci_intr_establish(pc, ih, IPL_BIO, mlx_intr, mlx); 257 if (mlx->mlx_ih == NULL) { 258 printf("%s: can't establish interrupt", self->dv_xname); 259 if (intrstr != NULL) 260 printf(" at %s", intrstr); 261 printf("\n"); 262 return; 263 } 264 265 /* Select linkage based on controller interface type. */ 266 switch (mlx->mlx_iftype) { 267 case 2: 268 case 3: 269 mlx->mlx_submit = mlx_v3_submit; 270 mlx->mlx_findcomplete = mlx_v3_findcomplete; 271 mlx->mlx_intaction = mlx_v3_intaction; 272 mlx->mlx_fw_handshake = mlx_v3_fw_handshake; 273 break; 274 275 case 4: 276 mlx->mlx_submit = mlx_v4_submit; 277 mlx->mlx_findcomplete = mlx_v4_findcomplete; 278 mlx->mlx_intaction = mlx_v4_intaction; 279 mlx->mlx_fw_handshake = mlx_v4_fw_handshake; 280 break; 281 282 case 5: 283 mlx->mlx_submit = mlx_v5_submit; 284 mlx->mlx_findcomplete = mlx_v5_findcomplete; 285 mlx->mlx_intaction = mlx_v5_intaction; 286 mlx->mlx_fw_handshake = mlx_v5_fw_handshake; 287 break; 288 } 289 290 mlx_init(mlx, intrstr); 291 } 292 293 /* 294 * ================= V3 interface linkage ================= 295 */ 296 297 /* 298 * Try to give (mc) to the controller. Returns 1 if successful, 0 on 299 * failure (the controller is not ready to take a command). 300 * 301 * Must be called at splbio or in a fashion that prevents reentry. 302 */ 303 static int 304 mlx_v3_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) 305 { 306 307 /* Ready for our command? */ 308 if ((mlx_inb(mlx, MLX_V3REG_IDB) & MLX_V3_IDB_FULL) == 0) { 309 /* Copy mailbox data to window. */ 310 bus_space_write_region_1(mlx->mlx_iot, mlx->mlx_ioh, 311 MLX_V3REG_MAILBOX, mc->mc_mbox, MLX_V3_MAILBOX_LEN); 312 bus_space_barrier(mlx->mlx_iot, mlx->mlx_ioh, 313 MLX_V3REG_MAILBOX, MLX_V3_MAILBOX_LEN, 314 BUS_SPACE_BARRIER_WRITE); 315 316 /* Post command. */ 317 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_FULL); 318 return (1); 319 } 320 321 return (0); 322 } 323 324 /* 325 * See if a command has been completed, if so acknowledge its completion and 326 * recover the slot number and status code. 327 * 328 * Must be called at splbio or in a fashion that prevents reentry. 329 */ 330 static int 331 mlx_v3_findcomplete(struct mlx_softc *mlx, u_int *slot, u_int *status) 332 { 333 334 /* Status available? */ 335 if ((mlx_inb(mlx, MLX_V3REG_ODB) & MLX_V3_ODB_SAVAIL) != 0) { 336 *slot = mlx_inb(mlx, MLX_V3REG_STATUS_IDENT); 337 *status = mlx_inw(mlx, MLX_V3REG_STATUS); 338 339 /* Acknowledge completion. */ 340 mlx_outb(mlx, MLX_V3REG_ODB, MLX_V3_ODB_SAVAIL); 341 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_SACK); 342 return (1); 343 } 344 345 return (0); 346 } 347 348 /* 349 * Enable/disable interrupts as requested. (No acknowledge required) 350 * 351 * Must be called at splbio or in a fashion that prevents reentry. 352 */ 353 static void 354 mlx_v3_intaction(struct mlx_softc *mlx, int action) 355 { 356 357 mlx_outb(mlx, MLX_V3REG_IE, action != 0); 358 } 359 360 /* 361 * Poll for firmware error codes during controller initialisation. 362 * 363 * Returns 0 if initialisation is complete, 1 if still in progress but no 364 * error has been fetched, 2 if an error has been retrieved. 365 */ 366 static int 367 mlx_v3_fw_handshake(struct mlx_softc *mlx, int *error, int *param1, int *param2) 368 { 369 u_int8_t fwerror; 370 371 /* First time around, clear any hardware completion status. */ 372 if ((mlx->mlx_flags & MLXF_FW_INITTED) == 0) { 373 mlx_outb(mlx, MLX_V3REG_IDB, MLX_V3_IDB_SACK); 374 DELAY(1000); 375 mlx->mlx_flags |= MLXF_FW_INITTED; 376 } 377 378 /* Init in progress? */ 379 if ((mlx_inb(mlx, MLX_V3REG_IDB) & MLX_V3_IDB_INIT_BUSY) == 0) 380 return (0); 381 382 /* Test error value. */ 383 fwerror = mlx_inb(mlx, MLX_V3REG_FWERROR); 384 385 if ((fwerror & MLX_V3_FWERROR_PEND) == 0) 386 return (1); 387 388 /* Mask status pending bit, fetch status. */ 389 *error = fwerror & ~MLX_V3_FWERROR_PEND; 390 *param1 = mlx_inb(mlx, MLX_V3REG_FWERROR_PARAM1); 391 *param2 = mlx_inb(mlx, MLX_V3REG_FWERROR_PARAM2); 392 393 /* Acknowledge. */ 394 mlx_outb(mlx, MLX_V3REG_FWERROR, 0); 395 396 return (2); 397 } 398 399 /* 400 * ================= V4 interface linkage ================= 401 */ 402 403 /* 404 * Try to give (mc) to the controller. Returns 1 if successful, 0 on 405 * failure (the controller is not ready to take a command). 406 * 407 * Must be called at splbio or in a fashion that prevents reentry. 408 */ 409 static int 410 mlx_v4_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) 411 { 412 413 /* Ready for our command? */ 414 if ((mlx_inl(mlx, MLX_V4REG_IDB) & MLX_V4_IDB_FULL) == 0) { 415 /* Copy mailbox data to window. */ 416 bus_space_write_region_4(mlx->mlx_iot, mlx->mlx_ioh, 417 MLX_V4REG_MAILBOX, mc->mc_mbox, MLX_V4_MAILBOX_LEN >> 2); 418 bus_space_barrier(mlx->mlx_iot, mlx->mlx_ioh, 419 MLX_V4REG_MAILBOX, MLX_V4_MAILBOX_LEN, 420 BUS_SPACE_BARRIER_WRITE); 421 422 /* Post command. */ 423 mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_HWMBOX_CMD); 424 return (1); 425 } 426 427 return (0); 428 } 429 430 /* 431 * See if a command has been completed, if so acknowledge its completion and 432 * recover the slot number and status code. 433 * 434 * Must be called at splbio or in a fashion that prevents reentry. 435 */ 436 static int 437 mlx_v4_findcomplete(struct mlx_softc *mlx, u_int *slot, u_int *status) 438 { 439 440 /* Status available? */ 441 if ((mlx_inl(mlx, MLX_V4REG_ODB) & MLX_V4_ODB_HWSAVAIL) != 0) { 442 *slot = mlx_inb(mlx, MLX_V4REG_STATUS_IDENT); 443 *status = mlx_inw(mlx, MLX_V4REG_STATUS); 444 445 /* Acknowledge completion. */ 446 mlx_outl(mlx, MLX_V4REG_ODB, MLX_V4_ODB_HWMBOX_ACK); 447 mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_SACK); 448 return (1); 449 } 450 451 return (0); 452 } 453 454 /* 455 * Enable/disable interrupts as requested. 456 * 457 * Must be called at splbio or in a fashion that prevents reentry. 458 */ 459 static void 460 mlx_v4_intaction(struct mlx_softc *mlx, int action) 461 { 462 u_int32_t ier; 463 464 if (!action) 465 ier = MLX_V4_IE_MASK | MLX_V4_IE_DISINT; 466 else 467 ier = MLX_V4_IE_MASK & ~MLX_V4_IE_DISINT; 468 469 mlx_outl(mlx, MLX_V4REG_IE, ier); 470 } 471 472 /* 473 * Poll for firmware error codes during controller initialisation. 474 * 475 * Returns 0 if initialisation is complete, 1 if still in progress but no 476 * error has been fetched, 2 if an error has been retrieved. 477 */ 478 static int 479 mlx_v4_fw_handshake(struct mlx_softc *mlx, int *error, int *param1, int *param2) 480 { 481 u_int8_t fwerror; 482 483 /* First time around, clear any hardware completion status. */ 484 if ((mlx->mlx_flags & MLXF_FW_INITTED) == 0) { 485 mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_SACK); 486 DELAY(1000); 487 mlx->mlx_flags |= MLXF_FW_INITTED; 488 } 489 490 /* Init in progress? */ 491 if ((mlx_inl(mlx, MLX_V4REG_IDB) & MLX_V4_IDB_INIT_BUSY) == 0) 492 return (0); 493 494 /* Test error value */ 495 fwerror = mlx_inb(mlx, MLX_V4REG_FWERROR); 496 if ((fwerror & MLX_V4_FWERROR_PEND) == 0) 497 return (1); 498 499 /* Mask status pending bit, fetch status. */ 500 *error = fwerror & ~MLX_V4_FWERROR_PEND; 501 *param1 = mlx_inb(mlx, MLX_V4REG_FWERROR_PARAM1); 502 *param2 = mlx_inb(mlx, MLX_V4REG_FWERROR_PARAM2); 503 504 /* Acknowledge. */ 505 mlx_outb(mlx, MLX_V4REG_FWERROR, 0); 506 507 return (2); 508 } 509 510 /* 511 * ================= V5 interface linkage ================= 512 */ 513 514 /* 515 * Try to give (mc) to the controller. Returns 1 if successful, 0 on failure 516 * (the controller is not ready to take a command). 517 * 518 * Must be called at splbio or in a fashion that prevents reentry. 519 */ 520 static int 521 mlx_v5_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) 522 { 523 524 /* Ready for our command? */ 525 if ((mlx_inb(mlx, MLX_V5REG_IDB) & MLX_V5_IDB_EMPTY) != 0) { 526 /* Copy mailbox data to window. */ 527 bus_space_write_region_4(mlx->mlx_iot, mlx->mlx_ioh, 528 MLX_V5REG_MAILBOX, mc->mc_mbox, MLX_V5_MAILBOX_LEN >> 2); 529 bus_space_barrier(mlx->mlx_iot, mlx->mlx_ioh, 530 MLX_V5REG_MAILBOX, MLX_V5_MAILBOX_LEN, 531 BUS_SPACE_BARRIER_WRITE); 532 533 /* Post command */ 534 mlx_outb(mlx, MLX_V5REG_IDB, MLX_V5_IDB_HWMBOX_CMD); 535 return (1); 536 } 537 538 return (0); 539 } 540 541 /* 542 * See if a command has been completed, if so acknowledge its completion and 543 * recover the slot number and status code. 544 * 545 * Must be called at splbio or in a fashion that prevents reentry. 546 */ 547 static int 548 mlx_v5_findcomplete(struct mlx_softc *mlx, u_int *slot, u_int *status) 549 { 550 551 /* Status available? */ 552 if ((mlx_inb(mlx, MLX_V5REG_ODB) & MLX_V5_ODB_HWSAVAIL) != 0) { 553 *slot = mlx_inb(mlx, MLX_V5REG_STATUS_IDENT); 554 *status = mlx_inw(mlx, MLX_V5REG_STATUS); 555 556 /* Acknowledge completion. */ 557 mlx_outb(mlx, MLX_V5REG_ODB, MLX_V5_ODB_HWMBOX_ACK); 558 mlx_outb(mlx, MLX_V5REG_IDB, MLX_V5_IDB_SACK); 559 return (1); 560 } 561 562 return (0); 563 } 564 565 /* 566 * Enable/disable interrupts as requested. 567 * 568 * Must be called at splbio or in a fashion that prevents reentry. 569 */ 570 static void 571 mlx_v5_intaction(struct mlx_softc *mlx, int action) 572 { 573 u_int8_t ier; 574 575 if (!action) 576 ier = 0xff & MLX_V5_IE_DISINT; 577 else 578 ier = 0xff & ~MLX_V5_IE_DISINT; 579 580 mlx_outb(mlx, MLX_V5REG_IE, ier); 581 } 582 583 /* 584 * Poll for firmware error codes during controller initialisation. 585 * 586 * Returns 0 if initialisation is complete, 1 if still in progress but no 587 * error has been fetched, 2 if an error has been retrieved. 588 */ 589 static int 590 mlx_v5_fw_handshake(struct mlx_softc *mlx, int *error, int *param1, int *param2) 591 { 592 u_int8_t fwerror; 593 594 /* First time around, clear any hardware completion status. */ 595 if ((mlx->mlx_flags & MLXF_FW_INITTED) == 0) { 596 mlx_outb(mlx, MLX_V5REG_IDB, MLX_V5_IDB_SACK); 597 DELAY(1000); 598 mlx->mlx_flags |= MLXF_FW_INITTED; 599 } 600 601 /* Init in progress? */ 602 if ((mlx_inb(mlx, MLX_V5REG_IDB) & MLX_V5_IDB_INIT_DONE) != 0) 603 return (0); 604 605 /* Test for error value. */ 606 fwerror = mlx_inb(mlx, MLX_V5REG_FWERROR); 607 if ((fwerror & MLX_V5_FWERROR_PEND) == 0) 608 return (1); 609 610 /* Mask status pending bit, fetch status. */ 611 *error = fwerror & ~MLX_V5_FWERROR_PEND; 612 *param1 = mlx_inb(mlx, MLX_V5REG_FWERROR_PARAM1); 613 *param2 = mlx_inb(mlx, MLX_V5REG_FWERROR_PARAM2); 614 615 /* Acknowledge. */ 616 mlx_outb(mlx, MLX_V5REG_FWERROR, 0xff); 617 618 return (2); 619 } 620
Indexes created Mon Sep 29 21:09:56 GMT 2025