1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 27 /* 28 * Niagara2 Network Interface Unit (NIU) Nexus Driver 29 */ 30 31 #include <sys/conf.h> 32 #include <sys/modctl.h> 33 #include <sys/ddi_impldefs.h> 34 #include <sys/ddi_subrdefs.h> 35 #include <sys/ddi.h> 36 #include <sys/sunndi.h> 37 #include <sys/sunddi.h> 38 #include <sys/open.h> 39 #include <sys/stat.h> 40 #include <sys/file.h> 41 #include <sys/machsystm.h> 42 #include <sys/hsvc.h> 43 #include <sys/sdt.h> 44 #include <sys/hypervisor_api.h> 45 #include "niumx_var.h" 46 47 static int niumx_fm_init_child(dev_info_t *, dev_info_t *, int, 48 ddi_iblock_cookie_t *); 49 static int niumx_intr_ops(dev_info_t *dip, dev_info_t *rdip, 50 ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result); 51 static int niumx_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); 52 static int niumx_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); 53 static int niumx_set_intr(dev_info_t *dip, dev_info_t *rdip, 54 ddi_intr_handle_impl_t *hdlp, int valid); 55 static int niumx_add_intr(dev_info_t *dip, dev_info_t *rdip, 56 ddi_intr_handle_impl_t *hdlp); 57 static int niumx_rem_intr(dev_info_t *dip, dev_info_t *rdip, 58 ddi_intr_handle_impl_t *hdlp); 59 static uint_t niumx_intr_hdlr(void *arg); 60 static int niumx_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp, 61 off_t offset, off_t len, caddr_t *addrp); 62 static int niumx_dma_allochdl(dev_info_t *dip, dev_info_t *rdip, 63 ddi_dma_attr_t *attrp, 64 int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep); 65 static int niumx_dma_freehdl(dev_info_t *dip, dev_info_t *rdip, 66 ddi_dma_handle_t handlep); 67 static int niumx_dma_bindhdl(dev_info_t *dip, dev_info_t *rdip, 68 ddi_dma_handle_t handle, ddi_dma_req_t *dmareq, 69 ddi_dma_cookie_t *cookiep, uint_t *ccountp); 70 static int niumx_dma_unbindhdl(dev_info_t *dip, dev_info_t *rdip, 71 ddi_dma_handle_t handle); 72 static int niumx_ctlops(dev_info_t *dip, dev_info_t *rdip, 73 ddi_ctl_enum_t op, void *arg, void *result); 74 75 static struct bus_ops niumx_bus_ops = { 76 BUSO_REV, 77 niumx_map, 78 0, 79 0, 80 0, 81 i_ddi_map_fault, 82 0, 83 niumx_dma_allochdl, 84 niumx_dma_freehdl, 85 niumx_dma_bindhdl, 86 niumx_dma_unbindhdl, 87 0, 88 0, 89 0, 90 niumx_ctlops, 91 ddi_bus_prop_op, 92 0, /* (*bus_get_eventcookie)(); */ 93 0, /* (*bus_add_eventcall)(); */ 94 0, /* (*bus_remove_eventcall)(); */ 95 0, /* (*bus_post_event)(); */ 96 0, /* (*bus_intr_ctl)(); */ 97 0, /* (*bus_config)(); */ 98 0, /* (*bus_unconfig)(); */ 99 niumx_fm_init_child, /* (*bus_fm_init)(); */ 100 0, /* (*bus_fm_fini)(); */ 101 0, /* (*bus_enter)() */ 102 0, /* (*bus_exit)() */ 103 0, /* (*bus_power)() */ 104 niumx_intr_ops /* (*bus_intr_op)(); */ 105 }; 106 107 static struct dev_ops niumx_ops = { 108 DEVO_REV, /* devo_rev */ 109 0, /* refcnt */ 110 ddi_no_info, /* info */ 111 nulldev, /* identify */ 112 0, /* probe */ 113 niumx_attach, /* attach */ 114 niumx_detach, /* detach */ 115 nulldev, /* reset */ 116 (struct cb_ops *)0, /* driver operations */ 117 &niumx_bus_ops, /* bus operations */ 118 0, /* power */ 119 ddi_quiesce_not_supported, /* devo_quiesce */ 120 }; 121 122 /* Module linkage information for the kernel. */ 123 static struct modldrv modldrv = { 124 &mod_driverops, /* Type of module */ 125 "NIU Nexus Driver", 126 &niumx_ops, /* driver ops */ 127 }; 128 129 static struct modlinkage modlinkage = { 130 MODREV_1, 131 (void *)&modldrv, 132 NULL 133 }; 134 135 static void *niumx_state; 136 static niumx_ih_t niumx_ihtable[NIUMX_MAX_INTRS]; 137 138 /* 139 * forward function declarations: 140 */ 141 static void niumx_removechild(dev_info_t *); 142 static int niumx_initchild(dev_info_t *child); 143 144 int 145 _init(void) 146 { 147 int e; 148 uint64_t mjrnum; 149 uint64_t mnrnum; 150 151 /* 152 * Check HV intr group api versioning. 153 * This driver uses the old interrupt routines which are supported 154 * in old firmware in the CORE API group and in newer firmware in 155 * the INTR API group. Support for these calls will be dropped 156 * once the INTR API group major goes to 2. 157 */ 158 if ((hsvc_version(HSVC_GROUP_INTR, &mjrnum, &mnrnum) == 0) && 159 (mjrnum > NIUMX_INTR_MAJOR_VER)) { 160 cmn_err(CE_WARN, "niumx: unsupported intr api group: " 161 "maj:0x%lx, min:0x%lx", mjrnum, mnrnum); 162 return (ENOTSUP); 163 } 164 165 if ((e = ddi_soft_state_init(&niumx_state, sizeof (niumx_devstate_t), 166 1)) == 0 && (e = mod_install(&modlinkage)) != 0) 167 ddi_soft_state_fini(&niumx_state); 168 return (e); 169 } 170 171 int 172 _fini(void) 173 { 174 int e; 175 if ((e = mod_remove(&modlinkage)) == 0) 176 ddi_soft_state_fini(&niumx_state); 177 return (e); 178 } 179 180 int 181 _info(struct modinfo *modinfop) 182 { 183 return (mod_info(&modlinkage, modinfop)); 184 } 185 186 187 hrtime_t niumx_intr_timeout = 2ull * NANOSEC; /* 2 seconds in nanoseconds */ 188 189 void 190 niumx_intr_dist(void *arg) 191 { 192 kmutex_t *lock_p = (kmutex_t *)arg; 193 int i; 194 niumx_ih_t *ih_p = niumx_ihtable; 195 196 DBG(DBG_A_INTX, NULL, "niumx_intr_dist entered\n"); 197 mutex_enter(lock_p); 198 for (i = 0; i < NIUMX_MAX_INTRS; i++, ih_p++) { 199 sysino_t sysino = ih_p->ih_sysino; 200 cpuid_t cpuid; 201 int intr_state, state; 202 hrtime_t start; 203 dev_info_t *dip = ih_p->ih_dip; 204 if (!sysino || /* sequence is significant */ 205 (hvio_intr_getvalid(sysino, &intr_state) != H_EOK) || 206 (intr_state == HV_INTR_NOTVALID) || 207 (cpuid = intr_dist_cpuid()) == ih_p->ih_cpuid) 208 continue; 209 210 (void) hvio_intr_setvalid(sysino, HV_INTR_NOTVALID); 211 212 /* check for pending interrupts, busy wait if so */ 213 for (start = gethrtime(); !panicstr && 214 (hvio_intr_getstate(sysino, &state) == H_EOK) && 215 (state == HV_INTR_DELIVERED_STATE); /* */) { 216 if (gethrtime() - start > niumx_intr_timeout) { 217 cmn_err(CE_WARN, "%s%d: niumx_intr_dist: " 218 "pending interrupt (%x,%lx) timedout\n", 219 ddi_driver_name(dip), ddi_get_instance(dip), 220 ih_p->ih_inum, sysino); 221 (void) hvio_intr_setstate(sysino, 222 HV_INTR_IDLE_STATE); 223 break; 224 } 225 } 226 (void) hvio_intr_settarget(sysino, cpuid); 227 (void) hvio_intr_setvalid(sysino, HV_INTR_VALID); 228 ih_p->ih_cpuid = cpuid; 229 } 230 mutex_exit(lock_p); 231 } 232 233 static int 234 niumx_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 235 { 236 int instance = ddi_get_instance(dip); 237 niumx_devstate_t *niumxds_p; /* devstate pointer */ 238 niu_regspec_t *reg_p; 239 uint_t reglen; 240 int ret = DDI_SUCCESS; 241 242 switch (cmd) { 243 case DDI_ATTACH: 244 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, 245 DDI_PROP_DONTPASS, "reg", (int **)®_p, ®len) 246 != DDI_PROP_SUCCESS) { 247 DBG(DBG_ATTACH, dip, "reg lookup failed\n"); 248 ret = DDI_FAILURE; 249 goto done; 250 } 251 252 /* 253 * Allocate and get soft state structure. 254 */ 255 if (ddi_soft_state_zalloc(niumx_state, instance) 256 != DDI_SUCCESS) { 257 ret = DDI_FAILURE; 258 goto prop_free; 259 } 260 niumxds_p = (niumx_devstate_t *)ddi_get_soft_state(niumx_state, 261 instance); 262 niumxds_p->dip = dip; 263 mutex_init(&niumxds_p->niumx_mutex, NULL, MUTEX_DRIVER, NULL); 264 265 DBG(DBG_ATTACH, dip, "soft state alloc'd instance = %d, " 266 "niumxds_p = %p\n", instance, niumxds_p); 267 268 /* hv devhdl: low 28-bit of 1st "reg" entry's addr.hi */ 269 niumxds_p->niumx_dev_hdl = (devhandle_t)(reg_p->addr_high & 270 NIUMX_DEVHDLE_MASK); 271 272 /* add interrupt redistribution callback */ 273 intr_dist_add(niumx_intr_dist, &niumxds_p->niumx_mutex); 274 275 niumxds_p->niumx_fm_cap = DDI_FM_EREPORT_CAPABLE; 276 277 ddi_fm_init(niumxds_p->dip, &niumxds_p->niumx_fm_cap, 278 &niumxds_p->niumx_fm_ibc); 279 280 ret = DDI_SUCCESS; 281 goto prop_free; 282 cleanup: 283 mutex_destroy(&niumxds_p->niumx_mutex); 284 ddi_soft_state_free(niumx_state, ddi_get_instance(dip)); 285 prop_free: 286 ddi_prop_free(reg_p); 287 done: 288 return (ret); 289 290 case DDI_RESUME: 291 default: 292 break; 293 } 294 return (ret); 295 } 296 297 static int 298 niumx_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 299 { 300 niumx_devstate_t *niumxds_p; 301 302 switch (cmd) { 303 case DDI_DETACH: 304 305 niumxds_p = (niumx_devstate_t *) 306 ddi_get_soft_state(niumx_state, ddi_get_instance(dip)); 307 308 intr_dist_rem(niumx_intr_dist, &niumxds_p->niumx_mutex); 309 ddi_fm_fini(dip); 310 mutex_destroy(&niumxds_p->niumx_mutex); 311 ddi_soft_state_free(niumx_state, ddi_get_instance(dip)); 312 return (DDI_SUCCESS); 313 314 case DDI_SUSPEND: 315 default: 316 break; 317 } 318 return (DDI_FAILURE); 319 } 320 321 322 /* 323 * Function used to initialize FMA for our children nodes. Called 324 * through pci busops when child node calls ddi_fm_init. 325 */ 326 /*ARGSUSED*/ 327 int 328 niumx_fm_init_child(dev_info_t *dip, dev_info_t *cdip, int cap, 329 ddi_iblock_cookie_t *ibc_p) 330 { 331 niumx_devstate_t *niumxds_p = DIP_TO_STATE(dip); 332 333 ASSERT(ibc_p != NULL); 334 *ibc_p = niumxds_p->niumx_fm_ibc; 335 336 return (niumxds_p->niumx_fm_cap); 337 } 338 339 340 /*ARGSUSED*/ 341 int 342 niumx_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp, 343 off_t offset, off_t len, caddr_t *vaddrp) 344 { 345 struct regspec p_regspec; 346 ddi_map_req_t p_mapreq; 347 niu_regspec_t *reg_p; 348 int i, rn = mp->map_obj.rnumber, reglen, rnglen, rngnum, ret; 349 niumx_ranges_t *rng_p; 350 351 uint32_t reg_begin, rng_begin; 352 353 DBG(DBG_MAP, dip, "%s%d: mapping %s%d reg %d\n", NAMEINST(dip), 354 NAMEINST(rdip), rn); 355 356 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS, 357 "reg", (caddr_t)®_p, ®len) != DDI_SUCCESS) 358 return (DDI_FAILURE); 359 360 if (rn < 0 || (rn >= reglen / sizeof (niu_regspec_t))) { 361 DBG(DBG_MAP, dip, "rnumber out of range: %d\n", rn); 362 kmem_free(reg_p, reglen); 363 return (DDI_ME_RNUMBER_RANGE); 364 } 365 366 /* build regspec up for parent */ 367 p_mapreq = *mp; /* dup the whole structure */ 368 p_mapreq.map_type = DDI_MT_REGSPEC; 369 p_mapreq.map_obj.rp = &p_regspec; 370 371 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "ranges", 372 (caddr_t)&rng_p, &rnglen) != DDI_SUCCESS) { 373 DBG(DBG_MAP, dip, "%s%d: no ranges property\n", 374 ddi_driver_name(dip), ddi_get_instance(dip)); 375 kmem_free(reg_p, reglen); 376 return (DDI_FAILURE); 377 } 378 379 /* locate matching ranges record */ 380 rngnum = rnglen / sizeof (niumx_ranges_t); 381 for (i = 0, reg_p += rn; i < rngnum; rng_p++, i++) { 382 if (reg_p->addr_high == rng_p->child_hi) 383 break; 384 } 385 386 if (i >= rngnum) { 387 DBG(DBG_MAP, dip, "ranges record for reg[%d] not found.\n", rn); 388 ret = DDI_ME_REGSPEC_RANGE; 389 goto err; 390 } 391 392 /* 393 * validate request has matching bus type and within 4G 394 * limit by comparing addr.hi of "ranges" and child "reg". 395 */ 396 397 ASSERT(reg_p->size_high == 0); 398 399 rng_begin = rng_p->child_lo; 400 reg_begin = reg_p->addr_low; 401 /* check to verify reg bounds are within rng bounds */ 402 if (reg_begin < rng_begin || (reg_begin + (reg_p->size_low - 1)) > 403 (rng_begin + (rng_p->size_lo - 1))) { 404 DBG(DBG_MAP, dip, "size out of range for reg[%d].\n", rn); 405 ret = DDI_ME_REGSPEC_RANGE; 406 goto err; 407 } 408 409 p_regspec.regspec_bustype = rng_p->parent_hi; 410 p_regspec.regspec_addr = reg_begin - rng_begin + rng_p->parent_lo; 411 p_regspec.regspec_size = reg_p->size_low; 412 DBG(DBG_MAP, dip, "regspec:bus,addr,size = (%x,%x,%x)\n", 413 p_regspec.regspec_bustype, p_regspec.regspec_addr, 414 p_regspec.regspec_size); 415 ret = ddi_map(dip, &p_mapreq, 0, 0, vaddrp); 416 DBG(DBG_MAP, dip, "niumx_map: ret %d.\n", ret); 417 err: 418 kmem_free(rng_p - i, rnglen); 419 kmem_free(reg_p - rn, reglen); 420 return (ret); 421 } 422 423 /* 424 * niumx_ctlops 425 */ 426 int 427 niumx_ctlops(dev_info_t *dip, dev_info_t *rdip, 428 ddi_ctl_enum_t ctlop, void *arg, void *result) 429 { 430 niu_regspec_t *reg_p; 431 int reglen, totreg; 432 433 DBG(DBG_CTLOPS, dip, "niumx_ctlops ctlop=%d.\n", ctlop); 434 if (rdip == (dev_info_t *)0) 435 return (DDI_FAILURE); 436 437 switch (ctlop) { 438 case DDI_CTLOPS_REPORTDEV: 439 cmn_err(CE_NOTE, "device: %s@%s, %s%d\n", 440 ddi_node_name(rdip), ddi_get_name_addr(rdip), 441 NAMEINST(rdip)); 442 return (DDI_SUCCESS); 443 444 case DDI_CTLOPS_INITCHILD: 445 return (niumx_initchild((dev_info_t *)arg)); 446 447 case DDI_CTLOPS_UNINITCHILD: 448 niumx_removechild((dev_info_t *)arg); 449 return (DDI_SUCCESS); 450 451 case DDI_CTLOPS_REGSIZE: 452 case DDI_CTLOPS_NREGS: 453 /* fall through */ 454 break; 455 default: 456 DBG(DBG_CTLOPS, dip, "just pass to ddi_cltops.\n"); 457 return (ddi_ctlops(dip, rdip, ctlop, arg, result)); 458 } 459 460 /* REGSIZE/NREGS */ 461 462 *(int *)result = 0; 463 464 if (ddi_getlongprop(DDI_DEV_T_NONE, rdip, DDI_PROP_DONTPASS | 465 DDI_PROP_CANSLEEP, "reg", (caddr_t)®_p, ®len) != DDI_SUCCESS) 466 return (DDI_FAILURE); 467 468 totreg = reglen / sizeof (niu_regspec_t); 469 if (ctlop == DDI_CTLOPS_NREGS) { 470 DBG(DBG_CTLOPS, (dev_info_t *)dip, "niumx_ctlops NREGS=%d.\n", 471 totreg); 472 *(int *)result = totreg; 473 } else if (ctlop == DDI_CTLOPS_REGSIZE) { 474 int rn; 475 rn = *(int *)arg; 476 if (rn >= totreg) { 477 kmem_free(reg_p, reglen); 478 return (DDI_FAILURE); 479 } 480 *(off_t *)result = (reg_p + rn)->size_low; 481 DBG(DBG_CTLOPS, (dev_info_t *)dip, "rn = %d, REGSIZE=%x.\n", 482 rn, *(off_t *)result); 483 } 484 485 kmem_free(reg_p, reglen); 486 return (DDI_SUCCESS); 487 } 488 489 /* 490 * niumx_name_child 491 * 492 * This function is called from init_child to name a node. It is 493 * also passed as a callback for node merging functions. 494 * 495 * return value: DDI_SUCCESS, DDI_FAILURE 496 */ 497 static int 498 niumx_name_child(dev_info_t *child, char *name, int namelen) 499 { 500 niu_regspec_t *r; 501 uint_t n; 502 503 DBG(DBG_CHK_MOD, (dev_info_t *)child, "==> niumx_name_child\n"); 504 505 if (ndi_dev_is_persistent_node(child) == 0) { 506 char **unit_addr; 507 508 /* name .conf nodes by "unit-address" property */ 509 if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, child, 510 DDI_PROP_DONTPASS, "unit-address", &unit_addr, &n) != 511 DDI_PROP_SUCCESS) { 512 cmn_err(CE_WARN, "cannot name node from %s.conf", 513 ddi_driver_name(child)); 514 return (DDI_FAILURE); 515 } 516 if (n != 1 || *unit_addr == NULL || **unit_addr == 0) { 517 cmn_err(CE_WARN, "unit-address property in %s.conf" 518 " not well-formed", ddi_driver_name(child)); 519 ddi_prop_free(unit_addr); 520 return (DDI_FAILURE); 521 } 522 523 (void) snprintf(name, namelen, "%s", *unit_addr); 524 ddi_prop_free(unit_addr); 525 return (DDI_SUCCESS); 526 } 527 528 /* name hardware nodes by "reg" property */ 529 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 530 "reg", (int **)&r, &n) != DDI_SUCCESS) { 531 cmn_err(CE_WARN, "reg property not well-formed"); 532 return (DDI_FAILURE); 533 } 534 (void) snprintf(name, namelen, "%x", (r[0].addr_high)); 535 ddi_prop_free(r); 536 return (DDI_SUCCESS); 537 } 538 539 static int 540 niumx_initchild(dev_info_t *child) 541 { 542 char name[MAXNAMELEN]; 543 544 DBG(DBG_CHK_MOD, (dev_info_t *)child, "==> niumx_initchild\n"); 545 /* 546 * Non-peristent nodes indicate a prototype node with per-instance 547 * properties to be merged into the real h/w device node. 548 */ 549 if (ndi_dev_is_persistent_node(child) == 0) { 550 niu_regspec_t *r; 551 uint_t n; 552 553 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, 554 DDI_PROP_DONTPASS, "reg", (int **)&r, &n) == 555 DDI_SUCCESS) { 556 cmn_err(CE_WARN, 557 "cannot merge prototype from %s.conf", 558 ddi_driver_name(child)); 559 ddi_prop_free(r); 560 return (DDI_NOT_WELL_FORMED); 561 } 562 563 if (niumx_name_child(child, name, MAXNAMELEN) != DDI_SUCCESS) 564 return (DDI_NOT_WELL_FORMED); 565 566 ddi_set_name_addr(child, name); 567 ddi_set_parent_data(child, NULL); 568 569 /* 570 * Try to merge the properties from this prototype 571 * node into real h/w nodes. 572 */ 573 if (ndi_merge_node(child, niumx_name_child) == DDI_SUCCESS) { 574 /* 575 * Merged ok - return failure to remove the node. 576 */ 577 ddi_set_name_addr(child, NULL); 578 return (DDI_FAILURE); 579 } 580 581 /* 582 * The child was not merged into a h/w node, 583 * but there's not much we can do with it other 584 * than return failure to cause the node to be removed. 585 */ 586 cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", 587 ddi_driver_name(child), ddi_get_name_addr(child), 588 ddi_driver_name(child)); 589 ddi_set_name_addr(child, NULL); 590 return (DDI_NOT_WELL_FORMED); 591 } 592 593 /* 594 * Initialize real h/w nodes 595 */ 596 if (niumx_name_child(child, name, MAXNAMELEN) != DDI_SUCCESS) 597 return (DDI_FAILURE); 598 599 ddi_set_name_addr(child, name); 600 return (DDI_SUCCESS); 601 } 602 603 static void 604 niumx_removechild(dev_info_t *dip) 605 { 606 ddi_set_name_addr(dip, NULL); 607 ddi_remove_minor_node(dip, NULL); 608 impl_rem_dev_props(dip); 609 } 610 611 612 613 /* 614 * bus dma alloc handle entry point: 615 */ 616 /*ARGSUSED*/ 617 int 618 niumx_dma_allochdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_attr_t *attrp, 619 int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep) 620 { 621 ddi_dma_impl_t *mp; 622 int sleep = (waitfp == DDI_DMA_SLEEP) ? KM_SLEEP : KM_NOSLEEP; 623 624 DBG(DBG_DMA_ALLOCH, dip, "rdip=%s%d\n", NAMEINST(rdip)); 625 626 if (attrp->dma_attr_version != DMA_ATTR_V0) { 627 DBG(DBG_DMA_ALLOCH, (dev_info_t *)dip, "DDI_DMA_BADATTR\n"); 628 return (DDI_DMA_BADATTR); 629 } 630 631 /* Caution: we don't use zalloc to enhance performance! */ 632 if ((mp = kmem_alloc(sizeof (ddi_dma_impl_t), sleep)) == 0) { 633 DBG(DBG_DMA_ALLOCH, dip, "can't alloc ddi_dma_impl_t\n"); 634 return (DDI_FAILURE); 635 } 636 mp->dmai_rdip = rdip; 637 mp->dmai_pfnlst = NULL; 638 mp->dmai_cookie = NULL; 639 mp->dmai_fault = 0; 640 mp->dmai_fault_check = NULL; 641 mp->dmai_fault_notify = NULL; 642 643 mp->dmai_attr = *attrp; /* set requestors attr info */ 644 645 DBG(DBG_DMA_ALLOCH, dip, "mp=%p\n", mp); 646 647 *handlep = (ddi_dma_handle_t)mp; 648 return (DDI_SUCCESS); 649 } 650 651 652 /* 653 * bus dma free handle entry point: 654 */ 655 /*ARGSUSED*/ 656 int 657 niumx_dma_freehdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_handle_t handle) 658 { 659 ddi_dma_impl_t *mp = (ddi_dma_impl_t *)handle; 660 661 if (mp->dmai_cookie) 662 kmem_free(mp->dmai_cookie, sizeof (ddi_dma_cookie_t)); 663 kmem_free(mp, sizeof (ddi_dma_impl_t)); 664 665 return (DDI_SUCCESS); 666 } 667 668 669 /* 670 * bus dma bind handle entry point: 671 * 672 * check/enforce DMA type, setup pfn0 and some other key pieces 673 * of this dma request. 674 * Note: this only works with DMA_OTYP_VADDR, and makes use of the known 675 * fact that only contiguous memory blocks will be passed in. 676 * Therefore only one cookie will ever be returned. 677 * 678 * return values: 679 * DDI_DMA_NOMAPPING - can't get valid pfn0, or bad dma type 680 * DDI_DMA_NORESOURCES 681 * DDI_SUCCESS 682 * 683 * dma handle members affected (set on exit): 684 * mp->dmai_object - dmareq->dmar_object 685 * mp->dmai_rflags - dmareq->dmar_flags 686 * mp->dmai_pfn0 - 1st page pfn (if va/size pair and not shadow) 687 * mp->dmai_roffset - initialized to starting page offset 688 * mp->dmai_size - # of total pages of entire object 689 * mp->dmai_cookie - new cookie alloc'd 690 */ 691 /*ARGSUSED*/ 692 int 693 niumx_dma_bindhdl(dev_info_t *dip, dev_info_t *rdip, 694 ddi_dma_handle_t handle, ddi_dma_req_t *dmareq, 695 ddi_dma_cookie_t *cookiep, uint_t *ccountp) 696 { 697 int (*waitfp)(caddr_t) = dmareq->dmar_fp; 698 ddi_dma_impl_t *mp = (ddi_dma_impl_t *)handle; 699 ddi_dma_obj_t *dobj_p = &dmareq->dmar_object; 700 uint32_t offset; 701 pfn_t pfn0; 702 int ret; 703 704 DBG(DBG_DMA_BINDH, dip, "rdip=%s%d mp=%p dmareq=%p\n", NAMEINST(rdip), 705 mp, dmareq); 706 707 /* first check dma type */ 708 mp->dmai_rflags = dmareq->dmar_flags & DMP_DDIFLAGS | DMP_NOSYNC; 709 switch (dobj_p->dmao_type) { 710 case DMA_OTYP_VADDR: { 711 caddr_t vaddr = dobj_p->dmao_obj.virt_obj.v_addr; 712 struct as *as_p = dobj_p->dmao_obj.virt_obj.v_as; 713 struct hat *hat_p = as_p ? as_p->a_hat : kas.a_hat; 714 offset = (ulong_t)vaddr & NIUMX_PAGE_OFFSET; 715 pfn0 = hat_getpfnum(hat_p, vaddr); 716 } 717 break; 718 719 case DMA_OTYP_BUFVADDR: 720 case DMA_OTYP_PAGES: 721 case DMA_OTYP_PADDR: 722 default: 723 cmn_err(CE_WARN, "%s%d requested unsupported dma type %x", 724 NAMEINST(mp->dmai_rdip), dobj_p->dmao_type); 725 ret = DDI_DMA_NOMAPPING; 726 goto err; 727 } 728 if (pfn0 == PFN_INVALID) { 729 cmn_err(CE_WARN, "%s%d: invalid pfn0 for DMA object %p", 730 NAMEINST(dip), (void *)dobj_p); 731 ret = DDI_DMA_NOMAPPING; 732 goto err; 733 } 734 mp->dmai_object = *dobj_p; /* whole object */ 735 mp->dmai_pfn0 = (void *)pfn0; /* cache pfn0 */ 736 mp->dmai_roffset = offset; /* pg0 offset */ 737 mp->dmai_mapping = mp->dmai_roffset | NIUMX_PTOB(pfn0); 738 mp->dmai_size = mp->dmai_object.dmao_size; 739 740 DBG(DBG_DMA_BINDH, dip, "check pfn: mp=%p pfn0=%x\n", 741 mp, mp->dmai_pfn0); 742 if (!(mp->dmai_cookie = kmem_zalloc(sizeof (ddi_dma_cookie_t), 743 waitfp == DDI_DMA_SLEEP ? KM_SLEEP : KM_NOSLEEP))) { 744 ret = DDI_DMA_NORESOURCES; 745 goto err; 746 } 747 mp->dmai_cookie->dmac_laddress = mp->dmai_mapping; 748 mp->dmai_cookie->dmac_size = mp->dmai_size; 749 *ccountp = 1; 750 *cookiep = *mp->dmai_cookie; 751 DBG(DBG_DMA_BINDH, dip, "cookie %" PRIx64 "+%x, count=%d\n", 752 cookiep->dmac_address, cookiep->dmac_size, *ccountp); 753 return (DDI_DMA_MAPPED); 754 755 err: 756 DBG(DBG_DMA_BINDH, (dev_info_t *)dip, 757 "niumx_dma_bindhdl error ret=%d\n", ret); 758 return (ret); 759 } 760 761 /* 762 * bus dma unbind handle entry point: 763 */ 764 /*ARGSUSED*/ 765 int 766 niumx_dma_unbindhdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_handle_t handle) 767 { 768 ddi_dma_impl_t *mp = (ddi_dma_impl_t *)handle; 769 770 DBG(DBG_DMA_UNBINDH, dip, "rdip=%s%d, mp=%p\n", 771 ddi_driver_name(rdip), ddi_get_instance(rdip), handle); 772 if (mp->dmai_cookie) { 773 kmem_free(mp->dmai_cookie, sizeof (ddi_dma_cookie_t)); 774 mp->dmai_cookie = NULL; 775 } 776 777 return (DDI_SUCCESS); 778 } 779 780 /*ARGSUSED*/ 781 int 782 niumx_intr_ops(dev_info_t *dip, dev_info_t *rdip, ddi_intr_op_t intr_op, 783 ddi_intr_handle_impl_t *hdlp, void *result) 784 { 785 786 int ret = DDI_SUCCESS; 787 788 DBG(DBG_INTROPS, dip, "niumx_intr_ops: dip=%p rdip=%p intr_op=%x " 789 "handle=%p\n", dip, rdip, intr_op, hdlp); 790 791 switch (intr_op) { 792 793 case DDI_INTROP_SUPPORTED_TYPES: 794 *(int *)result = DDI_INTR_TYPE_FIXED; 795 break; 796 case DDI_INTROP_GETCAP: 797 *(int *)result = DDI_INTR_FLAG_LEVEL; 798 break; 799 case DDI_INTROP_SETCAP: 800 ret = DDI_ENOTSUP; 801 break; 802 case DDI_INTROP_ALLOC: 803 /* scratch1 = count, # of intrs from DDI framework */ 804 *(int *)result = hdlp->ih_scratch1; 805 break; 806 case DDI_INTROP_FREE: 807 /* Do we need to do anything here? */ 808 break; 809 case DDI_INTROP_GETPRI: 810 *(int *)result = NIUMX_DEFAULT_PIL; 811 break; 812 case DDI_INTROP_SETPRI: 813 ret = DDI_ENOTSUP; 814 break; 815 case DDI_INTROP_ADDISR: 816 ret = niumx_add_intr(dip, rdip, hdlp); 817 break; 818 case DDI_INTROP_REMISR: 819 ret = niumx_rem_intr(dip, rdip, hdlp); 820 break; 821 case DDI_INTROP_ENABLE: 822 ret = niumx_set_intr(dip, rdip, hdlp, HV_INTR_VALID); 823 break; 824 case DDI_INTROP_DISABLE: 825 ret = niumx_set_intr(dip, rdip, hdlp, HV_INTR_NOTVALID); 826 break; 827 case DDI_INTROP_SETMASK: 828 ret = DDI_ENOTSUP; 829 break; 830 case DDI_INTROP_CLRMASK: 831 ret = DDI_ENOTSUP; 832 break; 833 case DDI_INTROP_GETPENDING: 834 ret = DDI_ENOTSUP; 835 break; 836 case DDI_INTROP_NINTRS: 837 case DDI_INTROP_NAVAIL: { 838 devino_t *inos_p; 839 int inoslen; 840 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS, 841 "interrupts", (caddr_t)&inos_p, &inoslen) 842 != DDI_SUCCESS) { 843 ret = DDI_FAILURE; 844 break; 845 } 846 *(int *)result = inoslen / sizeof (uint32_t); 847 kmem_free(inos_p, inoslen); 848 } 849 break; 850 default: 851 ret = DDI_ENOTSUP; 852 break; 853 } 854 855 DBG(DBG_INTROPS, dip, "niumx_intr_ops: ret=%d\n", ret); 856 return (ret); 857 } 858 859 int 860 niumx_set_intr(dev_info_t *dip, dev_info_t *rdip, 861 ddi_intr_handle_impl_t *hdlp, int valid) 862 { 863 niumx_ih_t *ih_p; 864 devino_t *inos_p; 865 int inoslen, ret = DDI_SUCCESS; 866 uint64_t hvret; 867 868 ASSERT(hdlp->ih_inum < NIUMX_MAX_INTRS); 869 870 /* find the appropriate slot from the fixed table */ 871 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS, 872 "interrupts", (caddr_t)&inos_p, &inoslen) != DDI_SUCCESS) { 873 ret = DDI_FAILURE; 874 goto fail; 875 } 876 ih_p = niumx_ihtable + inos_p[hdlp->ih_inum]; 877 DBG(DBG_A_INTX, dip, "niumx_set_intr: rdip=%s%d, valid=%d %s (%x,%x)\n", 878 NAMEINST(rdip), valid, valid ? "enabling" : "disabling", 879 ih_p->ih_inum, ih_p->ih_sysino); 880 881 if (valid == HV_INTR_VALID) 882 (void) hvio_intr_setstate(ih_p->ih_sysino, HV_INTR_IDLE_STATE); 883 if ((hvret = hvio_intr_setvalid(ih_p->ih_sysino, valid)) 884 != H_EOK) { 885 DBG(DBG_A_INTX, dip, "hvio_intr_setvalid failed, ret 0x%x\n", 886 hvret); 887 ret = DDI_FAILURE; 888 } 889 kmem_free(inos_p, inoslen); 890 fail: 891 return (ret); 892 } 893 894 895 896 /* 897 * niumx_add_intr: 898 * 899 * This function is called to register interrupts. 900 */ 901 int 902 niumx_add_intr(dev_info_t *dip, dev_info_t *rdip, 903 ddi_intr_handle_impl_t *hdlp) 904 { 905 niumx_ih_t *ih_p; 906 int inoslen, ret = DDI_SUCCESS; 907 uint64_t hvret; 908 devino_t *inos_p, ino; /* INO numbers, from "interrupts" prop */ 909 sysino_t sysino; 910 911 /* get new ino */ 912 if (hdlp->ih_inum >= NIUMX_MAX_INTRS) { 913 DBG(DBG_INTR, dip, "error: inum %d out of range\n", 914 hdlp->ih_inum); 915 ret = DDI_FAILURE; 916 goto done; 917 } 918 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS, 919 "interrupts", (caddr_t)&inos_p, &inoslen) != DDI_SUCCESS) { 920 ret = DDI_FAILURE; 921 goto done; 922 } 923 ih_p = niumx_ihtable + inos_p[hdlp->ih_inum]; 924 ino = inos_p[hdlp->ih_inum]; 925 kmem_free(inos_p, inoslen); 926 if ((hvret = hvio_intr_devino_to_sysino(DIP_TO_HANDLE(dip), ino, 927 &sysino)) != H_EOK) { 928 DBG(DBG_INTR, dip, "hvio_intr_devino_to_sysino failed, " 929 "ret 0x%x\n", hvret); 930 ret = DDI_FAILURE; 931 goto done; 932 } 933 ih_p->ih_sysino = sysino; 934 ih_p->ih_dip = dip; 935 ih_p->ih_inum = hdlp->ih_inum; 936 ih_p->ih_hdlr = hdlp->ih_cb_func; 937 ih_p->ih_arg1 = hdlp->ih_cb_arg1; 938 ih_p->ih_arg2 = hdlp->ih_cb_arg2; 939 940 DBG(DBG_A_INTX, dip, "niumx_add_intr: rdip=%s%d inum=0x%x " 941 "handler=%p arg1=%p arg2=%p, new ih_p = %p\n", NAMEINST(rdip), 942 hdlp->ih_inum, hdlp->ih_cb_func, hdlp->ih_cb_arg1, 943 hdlp->ih_cb_arg2, ih_p); 944 945 if (hdlp->ih_pri == 0) 946 hdlp->ih_pri = NIUMX_DEFAULT_PIL; 947 948 /* Save sysino value in hdlp */ 949 hdlp->ih_vector = ih_p->ih_sysino; 950 951 /* swap in our handler & arg */ 952 DDI_INTR_ASSIGN_HDLR_N_ARGS(hdlp, (ddi_intr_handler_t *)niumx_intr_hdlr, 953 (void *)ih_p, NULL); 954 955 DBG(DBG_A_INTX, dip, "for ino %x adding (%x,%x)\n", ino, ih_p->ih_inum, 956 ih_p->ih_sysino); 957 ret = i_ddi_add_ivintr(hdlp); 958 959 /* Restore orig. interrupt handler & args in handle. */ 960 DDI_INTR_ASSIGN_HDLR_N_ARGS(hdlp, ih_p->ih_hdlr, ih_p->ih_arg1, 961 ih_p->ih_arg2); 962 963 if (ret != DDI_SUCCESS) { 964 DBG(DBG_A_INTX, dip, "i_ddi_add_ivintr error ret=%x\n", ret); 965 goto done; 966 } 967 968 /* select cpu, saving it for removal */ 969 ih_p->ih_cpuid = intr_dist_cpuid(); 970 971 if ((hvret = hvio_intr_settarget(ih_p->ih_sysino, ih_p->ih_cpuid)) 972 != H_EOK) { 973 DBG(DBG_A_INTX, dip, "hvio_intr_settarget failed, ret 0x%x\n", 974 hvret); 975 ret = DDI_FAILURE; 976 } 977 done: 978 DBG(DBG_A_INTX, dip, "done, ret = %d, ih_p 0x%p, hdlp 0x%p\n", ih_p, 979 hdlp, ret); 980 return (ret); 981 } 982 983 /* 984 * niumx_rem_intr: 985 * 986 * This function is called to unregister interrupts. 987 */ 988 int 989 niumx_rem_intr(dev_info_t *dip, dev_info_t *rdip, 990 ddi_intr_handle_impl_t *hdlp) 991 { 992 niumx_ih_t *ih_p; 993 devino_t *inos_p; 994 int inoslen, ret = DDI_SUCCESS, state; 995 hrtime_t start; 996 sysino_t sysino; 997 998 ASSERT(hdlp->ih_inum < NIUMX_MAX_INTRS); 999 1000 /* find the appropriate slot from the fixed table */ 1001 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS, 1002 "interrupts", (caddr_t)&inos_p, &inoslen) != DDI_SUCCESS) { 1003 ret = DDI_FAILURE; 1004 goto fail1; 1005 } 1006 ih_p = niumx_ihtable + inos_p[hdlp->ih_inum]; 1007 sysino = ih_p->ih_sysino; 1008 DBG(DBG_R_INTX, dip, "removing (%x,%x)\n", ih_p->ih_inum, sysino); 1009 1010 (void) hvio_intr_setvalid(sysino, HV_INTR_NOTVALID); 1011 1012 /* check for pending interrupts, busy wait if so */ 1013 for (start = gethrtime(); !panicstr && 1014 (hvio_intr_getstate(sysino, &state) == H_EOK) && 1015 (state == HV_INTR_DELIVERED_STATE); /* */) { 1016 if (gethrtime() - start > niumx_intr_timeout) { 1017 cmn_err(CE_WARN, "%s%d: niumx_intr_dist: " 1018 "pending interrupt (%x,%lx) timedout\n", 1019 ddi_driver_name(dip), ddi_get_instance(dip), 1020 ih_p->ih_inum, sysino); 1021 ret = DDI_FAILURE; 1022 goto fail2; 1023 } 1024 } 1025 1026 ih_p->ih_sysino = 0; 1027 1028 hdlp->ih_vector = (uint32_t)sysino; 1029 if (hdlp->ih_vector != NULL) i_ddi_rem_ivintr(hdlp); 1030 1031 fail2: 1032 kmem_free(inos_p, inoslen); 1033 fail1: 1034 return (ret); 1035 } 1036 1037 /* 1038 * niumx_intr_hdlr (our interrupt handler) 1039 */ 1040 uint_t 1041 niumx_intr_hdlr(void *arg) 1042 { 1043 niumx_ih_t *ih_p = (niumx_ih_t *)arg; 1044 uint_t r; 1045 1046 DTRACE_PROBE4(interrupt__start, dev_info_t, ih_p->ih_dip, void *, 1047 ih_p->ih_hdlr, caddr_t, ih_p->ih_arg1, caddr_t, ih_p->ih_arg2); 1048 1049 r = (*ih_p->ih_hdlr)(ih_p->ih_arg1, ih_p->ih_arg2); 1050 1051 DTRACE_PROBE4(interrupt__complete, dev_info_t, ih_p->ih_dip, void *, 1052 ih_p->ih_hdlr, caddr_t, ih_p->ih_arg1, int, r); 1053 1054 (void) hvio_intr_setstate(ih_p->ih_sysino, HV_INTR_IDLE_STATE); 1055 return (r); 1056 } 1057 1058 #ifdef DEBUG 1059 uint64_t niumx_debug_flags = 0; 1060 1061 static char *niumx_debug_sym [] = { /* same sequence as niumx_debug_bit */ 1062 /* 0 */ "attach", 1063 /* 1 */ "map", 1064 /* 2 */ "nex-ctlops", 1065 /* 3 */ "introps", 1066 /* 4 */ "intr-add", 1067 /* 5 */ "intr-rem", 1068 /* 6 */ "intr", 1069 /* 7 */ "dma-alloc", 1070 /* 8 */ "dma-bind", 1071 /* 9 */ "dma-unbind", 1072 /* 10 */ "chk-dma-mode" 1073 }; 1074 1075 /*ARGSUSED*/ 1076 void 1077 niumx_dbg(niumx_debug_bit_t bit, dev_info_t *dip, char *fmt, ...) 1078 { 1079 va_list ap; 1080 char msgbuf[1024]; 1081 1082 if (!(1ull << bit & niumx_debug_flags)) 1083 return; 1084 va_start(ap, fmt); 1085 (void) vsprintf(msgbuf, fmt, ap); 1086 va_end(ap); 1087 cmn_err(CE_NOTE, "%s: %s", niumx_debug_sym[bit], msgbuf); 1088 } 1089 1090 #endif /* DEBUG */ 1091