1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * qdio queue initialization 4 * 5 * Copyright IBM Corp. 2008 6 * Author(s): Jan Glauber <jang@linux.vnet.ibm.com> 7 */ 8 #include <linux/kernel.h> 9 #include <linux/slab.h> 10 #include <linux/export.h> 11 #include <linux/io.h> 12 #include <asm/qdio.h> 13 14 #include "cio.h" 15 #include "css.h" 16 #include "device.h" 17 #include "ioasm.h" 18 #include "chsc.h" 19 #include "qdio.h" 20 #include "qdio_debug.h" 21 22 #define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) 23 24 static struct kmem_cache *qdio_q_cache; 25 static struct kmem_cache *qdio_aob_cache; 26 27 struct qaob *qdio_allocate_aob(void) 28 { 29 return kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC); 30 } 31 32 void qdio_release_aob(struct qaob *aob) 33 { 34 kmem_cache_free(qdio_aob_cache, aob); 35 } 36 EXPORT_SYMBOL_GPL(qdio_release_aob); 37 38 /** 39 * qdio_free_buffers() - free qdio buffers 40 * @buf: array of pointers to qdio buffers 41 * @count: number of qdio buffers to free 42 */ 43 void qdio_free_buffers(struct qdio_buffer **buf, unsigned int count) 44 { 45 int pos; 46 47 for (pos = 0; pos < count; pos += QBUFF_PER_PAGE) 48 free_page((unsigned long) buf[pos]); 49 } 50 EXPORT_SYMBOL_GPL(qdio_free_buffers); 51 52 /** 53 * qdio_alloc_buffers() - allocate qdio buffers 54 * @buf: array of pointers to qdio buffers 55 * @count: number of qdio buffers to allocate 56 */ 57 int qdio_alloc_buffers(struct qdio_buffer **buf, unsigned int count) 58 { 59 int pos; 60 61 for (pos = 0; pos < count; pos += QBUFF_PER_PAGE) { 62 buf[pos] = (void *) get_zeroed_page(GFP_KERNEL); 63 if (!buf[pos]) { 64 qdio_free_buffers(buf, count); 65 return -ENOMEM; 66 } 67 } 68 for (pos = 0; pos < count; pos++) 69 if (pos % QBUFF_PER_PAGE) 70 buf[pos] = buf[pos - 1] + 1; 71 return 0; 72 } 73 EXPORT_SYMBOL_GPL(qdio_alloc_buffers); 74 75 /** 76 * qdio_reset_buffers() - reset qdio buffers 77 * @buf: array of pointers to qdio buffers 78 * @count: number of qdio buffers that will be zeroed 79 */ 80 void qdio_reset_buffers(struct qdio_buffer **buf, unsigned int count) 81 { 82 int pos; 83 84 for (pos = 0; pos < count; pos++) 85 memset(buf[pos], 0, sizeof(struct qdio_buffer)); 86 } 87 EXPORT_SYMBOL_GPL(qdio_reset_buffers); 88 89 /* 90 * qebsm is only available under 64bit but the adapter sets the feature 91 * flag anyway, so we manually override it. 92 */ 93 static inline int qebsm_possible(void) 94 { 95 return css_general_characteristics.qebsm; 96 } 97 98 /* 99 * qib_param_field: pointer to 128 bytes or NULL, if no param field 100 * nr_input_qs: pointer to nr_queues*128 words of data or NULL 101 */ 102 static void set_impl_params(struct qdio_irq *irq_ptr, 103 unsigned int qib_param_field_format, 104 unsigned char *qib_param_field, 105 unsigned long *input_slib_elements, 106 unsigned long *output_slib_elements) 107 { 108 struct qdio_q *q; 109 int i, j; 110 111 if (!irq_ptr) 112 return; 113 114 irq_ptr->qib.pfmt = qib_param_field_format; 115 if (qib_param_field) 116 memcpy(irq_ptr->qib.parm, qib_param_field, 117 sizeof(irq_ptr->qib.parm)); 118 119 if (!input_slib_elements) 120 goto output; 121 122 for_each_input_queue(irq_ptr, q, i) { 123 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) 124 q->slib->slibe[j].parms = 125 input_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j]; 126 } 127 output: 128 if (!output_slib_elements) 129 return; 130 131 for_each_output_queue(irq_ptr, q, i) { 132 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) 133 q->slib->slibe[j].parms = 134 output_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j]; 135 } 136 } 137 138 static void __qdio_free_queues(struct qdio_q **queues, unsigned int count) 139 { 140 struct qdio_q *q; 141 unsigned int i; 142 143 for (i = 0; i < count; i++) { 144 q = queues[i]; 145 free_page((unsigned long) q->slib); 146 kmem_cache_free(qdio_q_cache, q); 147 } 148 } 149 150 void qdio_free_queues(struct qdio_irq *irq_ptr) 151 { 152 __qdio_free_queues(irq_ptr->input_qs, irq_ptr->max_input_qs); 153 irq_ptr->max_input_qs = 0; 154 155 __qdio_free_queues(irq_ptr->output_qs, irq_ptr->max_output_qs); 156 irq_ptr->max_output_qs = 0; 157 } 158 159 static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues) 160 { 161 struct qdio_q *q; 162 int i; 163 164 for (i = 0; i < nr_queues; i++) { 165 q = kmem_cache_zalloc(qdio_q_cache, GFP_KERNEL); 166 if (!q) { 167 __qdio_free_queues(irq_ptr_qs, i); 168 return -ENOMEM; 169 } 170 171 q->slib = (struct slib *) __get_free_page(GFP_KERNEL); 172 if (!q->slib) { 173 kmem_cache_free(qdio_q_cache, q); 174 __qdio_free_queues(irq_ptr_qs, i); 175 return -ENOMEM; 176 } 177 irq_ptr_qs[i] = q; 178 } 179 return 0; 180 } 181 182 int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs) 183 { 184 int rc; 185 186 rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs); 187 if (rc) 188 return rc; 189 190 rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs); 191 if (rc) { 192 __qdio_free_queues(irq_ptr->input_qs, nr_input_qs); 193 return rc; 194 } 195 196 irq_ptr->max_input_qs = nr_input_qs; 197 irq_ptr->max_output_qs = nr_output_qs; 198 return 0; 199 } 200 201 static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr, 202 qdio_handler_t *handler, int i) 203 { 204 struct slib *slib = q->slib; 205 206 /* queue must be cleared for qdio_establish */ 207 memset(q, 0, sizeof(*q)); 208 memset(slib, 0, PAGE_SIZE); 209 q->slib = slib; 210 q->irq_ptr = irq_ptr; 211 q->mask = 1 << (31 - i); 212 q->nr = i; 213 q->handler = handler; 214 } 215 216 static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, 217 struct qdio_buffer **sbals_array, int i) 218 { 219 struct qdio_q *prev; 220 int j; 221 222 DBF_HEX(&q, sizeof(void *)); 223 q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2); 224 225 /* fill in sbal */ 226 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) 227 q->sbal[j] = *sbals_array++; 228 229 /* fill in slib */ 230 if (i > 0) { 231 prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1] 232 : irq_ptr->output_qs[i - 1]; 233 prev->slib->nsliba = (unsigned long)q->slib; 234 } 235 236 q->slib->sla = (unsigned long)q->sl; 237 q->slib->slsba = (unsigned long)&q->slsb.val[0]; 238 239 /* fill in sl */ 240 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) 241 q->sl->element[j].sbal = virt_to_phys(q->sbal[j]); 242 } 243 244 static void setup_queues(struct qdio_irq *irq_ptr, 245 struct qdio_initialize *qdio_init) 246 { 247 struct qdio_q *q; 248 struct qdio_outbuf_state *output_sbal_state_array = 249 qdio_init->output_sbal_state_array; 250 int i; 251 252 for_each_input_queue(irq_ptr, q, i) { 253 DBF_EVENT("inq:%1d", i); 254 setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); 255 256 q->is_input_q = 1; 257 258 setup_storage_lists(q, irq_ptr, 259 qdio_init->input_sbal_addr_array[i], i); 260 261 if (is_thinint_irq(irq_ptr)) { 262 tasklet_init(&q->tasklet, tiqdio_inbound_processing, 263 (unsigned long) q); 264 } else { 265 tasklet_init(&q->tasklet, qdio_inbound_processing, 266 (unsigned long) q); 267 } 268 } 269 270 for_each_output_queue(irq_ptr, q, i) { 271 DBF_EVENT("outq:%1d", i); 272 setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); 273 274 q->u.out.sbal_state = output_sbal_state_array; 275 output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q; 276 277 q->is_input_q = 0; 278 setup_storage_lists(q, irq_ptr, 279 qdio_init->output_sbal_addr_array[i], i); 280 281 tasklet_init(&q->tasklet, qdio_outbound_processing, 282 (unsigned long) q); 283 timer_setup(&q->u.out.timer, qdio_outbound_timer, 0); 284 } 285 } 286 287 static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) 288 { 289 if (qdioac & AC1_SIGA_INPUT_NEEDED) 290 irq_ptr->siga_flag.input = 1; 291 if (qdioac & AC1_SIGA_OUTPUT_NEEDED) 292 irq_ptr->siga_flag.output = 1; 293 if (qdioac & AC1_SIGA_SYNC_NEEDED) 294 irq_ptr->siga_flag.sync = 1; 295 if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)) 296 irq_ptr->siga_flag.sync_after_ai = 1; 297 if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)) 298 irq_ptr->siga_flag.sync_out_after_pci = 1; 299 } 300 301 static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, 302 unsigned char qdioac, unsigned long token) 303 { 304 if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) 305 goto no_qebsm; 306 if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || 307 (!(qdioac & AC1_SC_QEBSM_ENABLED))) 308 goto no_qebsm; 309 310 irq_ptr->sch_token = token; 311 312 DBF_EVENT("V=V:1"); 313 DBF_EVENT("%8lx", irq_ptr->sch_token); 314 return; 315 316 no_qebsm: 317 irq_ptr->sch_token = 0; 318 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; 319 DBF_EVENT("noV=V"); 320 } 321 322 /* 323 * If there is a qdio_irq we use the chsc_page and store the information 324 * in the qdio_irq, otherwise we copy it to the specified structure. 325 */ 326 int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, 327 struct subchannel_id *schid, 328 struct qdio_ssqd_desc *data) 329 { 330 struct chsc_ssqd_area *ssqd; 331 int rc; 332 333 DBF_EVENT("getssqd:%4x", schid->sch_no); 334 if (!irq_ptr) { 335 ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL); 336 if (!ssqd) 337 return -ENOMEM; 338 } else { 339 ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; 340 } 341 342 rc = chsc_ssqd(*schid, ssqd); 343 if (rc) 344 goto out; 345 346 if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || 347 !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || 348 (ssqd->qdio_ssqd.sch != schid->sch_no)) 349 rc = -EINVAL; 350 351 if (!rc) 352 memcpy(data, &ssqd->qdio_ssqd, sizeof(*data)); 353 354 out: 355 if (!irq_ptr) 356 free_page((unsigned long)ssqd); 357 358 return rc; 359 } 360 361 void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) 362 { 363 unsigned char qdioac; 364 int rc; 365 366 rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, &irq_ptr->ssqd_desc); 367 if (rc) { 368 DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no); 369 DBF_ERROR("rc:%x", rc); 370 /* all flags set, worst case */ 371 qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | 372 AC1_SIGA_SYNC_NEEDED; 373 } else 374 qdioac = irq_ptr->ssqd_desc.qdioac1; 375 376 check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); 377 process_ac_flags(irq_ptr, qdioac); 378 DBF_EVENT("ac 1:%2x 2:%4x", qdioac, irq_ptr->ssqd_desc.qdioac2); 379 DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac); 380 } 381 382 void qdio_free_async_data(struct qdio_irq *irq_ptr) 383 { 384 struct qdio_q *q; 385 int i; 386 387 for (i = 0; i < irq_ptr->max_output_qs; i++) { 388 q = irq_ptr->output_qs[i]; 389 if (q->u.out.use_cq) { 390 unsigned int n; 391 392 for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; n++) { 393 struct qaob *aob = q->u.out.aobs[n]; 394 395 if (aob) { 396 qdio_release_aob(aob); 397 q->u.out.aobs[n] = NULL; 398 } 399 } 400 401 qdio_disable_async_operation(&q->u.out); 402 } 403 } 404 } 405 406 static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, 407 struct qdio_q **irq_ptr_qs, 408 int i, int nr) 409 { 410 irq_ptr->qdr->qdf0[i + nr].sliba = 411 (unsigned long)irq_ptr_qs[i]->slib; 412 413 irq_ptr->qdr->qdf0[i + nr].sla = 414 (unsigned long)irq_ptr_qs[i]->sl; 415 416 irq_ptr->qdr->qdf0[i + nr].slsba = 417 (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; 418 419 irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; 420 irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; 421 irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; 422 irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; 423 } 424 425 static void setup_qdr(struct qdio_irq *irq_ptr, 426 struct qdio_initialize *qdio_init) 427 { 428 int i; 429 430 irq_ptr->qdr->qfmt = qdio_init->q_format; 431 irq_ptr->qdr->ac = qdio_init->qdr_ac; 432 irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs; 433 irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs; 434 irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ 435 irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; 436 irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; 437 irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; 438 439 for (i = 0; i < qdio_init->no_input_qs; i++) 440 __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); 441 442 for (i = 0; i < qdio_init->no_output_qs; i++) 443 __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i, 444 qdio_init->no_input_qs); 445 } 446 447 static void setup_qib(struct qdio_irq *irq_ptr, 448 struct qdio_initialize *init_data) 449 { 450 if (qebsm_possible()) 451 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; 452 453 irq_ptr->qib.rflags |= init_data->qib_rflags; 454 455 irq_ptr->qib.qfmt = init_data->q_format; 456 if (init_data->no_input_qs) 457 irq_ptr->qib.isliba = 458 (unsigned long)(irq_ptr->input_qs[0]->slib); 459 if (init_data->no_output_qs) 460 irq_ptr->qib.osliba = 461 (unsigned long)(irq_ptr->output_qs[0]->slib); 462 memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); 463 } 464 465 int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data) 466 { 467 struct ccw_device *cdev = irq_ptr->cdev; 468 struct ciw *ciw; 469 470 memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); 471 memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); 472 memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); 473 memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); 474 memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); 475 476 irq_ptr->debugfs_dev = NULL; 477 irq_ptr->sch_token = irq_ptr->perf_stat_enabled = 0; 478 irq_ptr->state = QDIO_IRQ_STATE_INACTIVE; 479 480 /* wipes qib.ac, required by ar7063 */ 481 memset(irq_ptr->qdr, 0, sizeof(struct qdr)); 482 483 irq_ptr->int_parm = init_data->int_parm; 484 irq_ptr->nr_input_qs = init_data->no_input_qs; 485 irq_ptr->nr_output_qs = init_data->no_output_qs; 486 irq_ptr->scan_threshold = init_data->scan_threshold; 487 ccw_device_get_schid(cdev, &irq_ptr->schid); 488 setup_queues(irq_ptr, init_data); 489 490 if (init_data->irq_poll) { 491 irq_ptr->irq_poll = init_data->irq_poll; 492 set_bit(QDIO_IRQ_DISABLED, &irq_ptr->poll_state); 493 } else { 494 irq_ptr->irq_poll = NULL; 495 } 496 497 setup_qib(irq_ptr, init_data); 498 set_impl_params(irq_ptr, init_data->qib_param_field_format, 499 init_data->qib_param_field, 500 init_data->input_slib_elements, 501 init_data->output_slib_elements); 502 503 /* fill input and output descriptors */ 504 setup_qdr(irq_ptr, init_data); 505 506 /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ 507 508 /* set our IRQ handler */ 509 spin_lock_irq(get_ccwdev_lock(cdev)); 510 irq_ptr->orig_handler = cdev->handler; 511 cdev->handler = qdio_int_handler; 512 spin_unlock_irq(get_ccwdev_lock(cdev)); 513 514 /* get qdio commands */ 515 ciw = ccw_device_get_ciw(cdev, CIW_TYPE_EQUEUE); 516 if (!ciw) { 517 DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); 518 return -EINVAL; 519 } 520 irq_ptr->equeue = *ciw; 521 522 ciw = ccw_device_get_ciw(cdev, CIW_TYPE_AQUEUE); 523 if (!ciw) { 524 DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); 525 return -EINVAL; 526 } 527 irq_ptr->aqueue = *ciw; 528 529 return 0; 530 } 531 532 void qdio_shutdown_irq(struct qdio_irq *irq) 533 { 534 struct ccw_device *cdev = irq->cdev; 535 536 /* restore IRQ handler */ 537 spin_lock_irq(get_ccwdev_lock(cdev)); 538 cdev->handler = irq->orig_handler; 539 cdev->private->intparm = 0; 540 spin_unlock_irq(get_ccwdev_lock(cdev)); 541 } 542 543 void qdio_print_subchannel_info(struct qdio_irq *irq_ptr) 544 { 545 char s[80]; 546 547 snprintf(s, 80, "qdio: %s %s on SC %x using " 548 "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n", 549 dev_name(&irq_ptr->cdev->dev), 550 (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" : 551 ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"), 552 irq_ptr->schid.sch_no, 553 is_thinint_irq(irq_ptr), 554 (irq_ptr->sch_token) ? 1 : 0, 555 pci_out_supported(irq_ptr) ? 1 : 0, 556 css_general_characteristics.aif_tdd, 557 (irq_ptr->siga_flag.input) ? "R" : " ", 558 (irq_ptr->siga_flag.output) ? "W" : " ", 559 (irq_ptr->siga_flag.sync) ? "S" : " ", 560 (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ", 561 (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " "); 562 printk(KERN_INFO "%s", s); 563 } 564 565 int qdio_enable_async_operation(struct qdio_output_q *outq) 566 { 567 outq->aobs = kcalloc(QDIO_MAX_BUFFERS_PER_Q, sizeof(struct qaob *), 568 GFP_KERNEL); 569 if (!outq->aobs) { 570 outq->use_cq = 0; 571 return -ENOMEM; 572 } 573 outq->use_cq = 1; 574 return 0; 575 } 576 577 void qdio_disable_async_operation(struct qdio_output_q *q) 578 { 579 kfree(q->aobs); 580 q->aobs = NULL; 581 q->use_cq = 0; 582 } 583 584 int __init qdio_setup_init(void) 585 { 586 int rc; 587 588 qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), 589 256, 0, NULL); 590 if (!qdio_q_cache) 591 return -ENOMEM; 592 593 qdio_aob_cache = kmem_cache_create("qdio_aob", 594 sizeof(struct qaob), 595 sizeof(struct qaob), 596 0, 597 NULL); 598 if (!qdio_aob_cache) { 599 rc = -ENOMEM; 600 goto free_qdio_q_cache; 601 } 602 603 /* Check for OSA/FCP thin interrupts (bit 67). */ 604 DBF_EVENT("thinint:%1d", 605 (css_general_characteristics.aif_osa) ? 1 : 0); 606 607 /* Check for QEBSM support in general (bit 58). */ 608 DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); 609 rc = 0; 610 out: 611 return rc; 612 free_qdio_q_cache: 613 kmem_cache_destroy(qdio_q_cache); 614 goto out; 615 } 616 617 void qdio_setup_exit(void) 618 { 619 kmem_cache_destroy(qdio_aob_cache); 620 kmem_cache_destroy(qdio_q_cache); 621 } 622