root/drivers/s390/cio/qdio_setup.c

DEFINITIONS

1. qdio_allocate_aob
2. qdio_release_aob
3. qdio_free_buffers
4. qdio_alloc_buffers
5. qdio_reset_buffers
6. qebsm_possible
7. set_impl_params
8. __qdio_allocate_qs
9. qdio_allocate_qs
10. setup_queues_misc
11. setup_storage_lists
12. setup_queues
13. process_ac_flags
14. check_and_setup_qebsm
15. qdio_setup_get_ssqd
16. qdio_setup_ssqd_info
17. qdio_release_memory
18. __qdio_allocate_fill_qdr
19. setup_qdr
20. setup_qib
21. qdio_setup_irq
22. qdio_print_subchannel_info
23. qdio_enable_async_operation
24. qdio_disable_async_operation
25. qdio_setup_init
26. qdio_setup_exit

   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 int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
 139 {
 140         struct qdio_q *q;
 141         int i;
 142 
 143         for (i = 0; i < nr_queues; i++) {
 144                 q = kmem_cache_zalloc(qdio_q_cache, GFP_KERNEL);
 145                 if (!q)
 146                         return -ENOMEM;
 147 
 148                 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
 149                 if (!q->slib) {
 150                         kmem_cache_free(qdio_q_cache, q);
 151                         return -ENOMEM;
 152                 }
 153                 irq_ptr_qs[i] = q;
 154                 INIT_LIST_HEAD(&q->entry);
 155         }
 156         return 0;
 157 }
 158 
 159 int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs)
 160 {
 161         int rc;
 162 
 163         rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs);
 164         if (rc)
 165                 return rc;
 166         rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs);
 167         return rc;
 168 }
 169 
 170 static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
 171                               qdio_handler_t *handler, int i)
 172 {
 173         struct slib *slib = q->slib;
 174 
 175         /* queue must be cleared for qdio_establish */
 176         memset(q, 0, sizeof(*q));
 177         memset(slib, 0, PAGE_SIZE);
 178         q->slib = slib;
 179         q->irq_ptr = irq_ptr;
 180         q->mask = 1 << (31 - i);
 181         q->nr = i;
 182         q->handler = handler;
 183         INIT_LIST_HEAD(&q->entry);
 184 }
 185 
 186 static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
 187                                 struct qdio_buffer **sbals_array, int i)
 188 {
 189         struct qdio_q *prev;
 190         int j;
 191 
 192         DBF_HEX(&q, sizeof(void *));
 193         q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2);
 194 
 195         /* fill in sbal */
 196         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
 197                 q->sbal[j] = *sbals_array++;
 198 
 199         /* fill in slib */
 200         if (i > 0) {
 201                 prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1]
 202                         : irq_ptr->output_qs[i - 1];
 203                 prev->slib->nsliba = (unsigned long)q->slib;
 204         }
 205 
 206         q->slib->sla = (unsigned long)q->sl;
 207         q->slib->slsba = (unsigned long)&q->slsb.val[0];
 208 
 209         /* fill in sl */
 210         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
 211                 q->sl->element[j].sbal = virt_to_phys(q->sbal[j]);
 212 }
 213 
 214 static void setup_queues(struct qdio_irq *irq_ptr,
 215                          struct qdio_initialize *qdio_init)
 216 {
 217         struct qdio_q *q;
 218         struct qdio_buffer **input_sbal_array = qdio_init->input_sbal_addr_array;
 219         struct qdio_buffer **output_sbal_array = qdio_init->output_sbal_addr_array;
 220         struct qdio_outbuf_state *output_sbal_state_array =
 221                                   qdio_init->output_sbal_state_array;
 222         int i;
 223 
 224         for_each_input_queue(irq_ptr, q, i) {
 225                 DBF_EVENT("inq:%1d", i);
 226                 setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
 227 
 228                 q->is_input_q = 1;
 229                 q->u.in.queue_start_poll = qdio_init->queue_start_poll_array ?
 230                                 qdio_init->queue_start_poll_array[i] : NULL;
 231 
 232                 setup_storage_lists(q, irq_ptr, input_sbal_array, i);
 233                 input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
 234 
 235                 if (is_thinint_irq(irq_ptr)) {
 236                         tasklet_init(&q->tasklet, tiqdio_inbound_processing,
 237                                      (unsigned long) q);
 238                 } else {
 239                         tasklet_init(&q->tasklet, qdio_inbound_processing,
 240                                      (unsigned long) q);
 241                 }
 242         }
 243 
 244         for_each_output_queue(irq_ptr, q, i) {
 245                 DBF_EVENT("outq:%1d", i);
 246                 setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i);
 247 
 248                 q->u.out.sbal_state = output_sbal_state_array;
 249                 output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q;
 250 
 251                 q->is_input_q = 0;
 252                 setup_storage_lists(q, irq_ptr, output_sbal_array, i);
 253                 output_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
 254 
 255                 tasklet_init(&q->tasklet, qdio_outbound_processing,
 256                              (unsigned long) q);
 257                 timer_setup(&q->u.out.timer, qdio_outbound_timer, 0);
 258         }
 259 }
 260 
 261 static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac)
 262 {
 263         if (qdioac & AC1_SIGA_INPUT_NEEDED)
 264                 irq_ptr->siga_flag.input = 1;
 265         if (qdioac & AC1_SIGA_OUTPUT_NEEDED)
 266                 irq_ptr->siga_flag.output = 1;
 267         if (qdioac & AC1_SIGA_SYNC_NEEDED)
 268                 irq_ptr->siga_flag.sync = 1;
 269         if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT))
 270                 irq_ptr->siga_flag.sync_after_ai = 1;
 271         if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI))
 272                 irq_ptr->siga_flag.sync_out_after_pci = 1;
 273 }
 274 
 275 static void check_and_setup_qebsm(struct qdio_irq *irq_ptr,
 276                                   unsigned char qdioac, unsigned long token)
 277 {
 278         if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM))
 279                 goto no_qebsm;
 280         if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) ||
 281             (!(qdioac & AC1_SC_QEBSM_ENABLED)))
 282                 goto no_qebsm;
 283 
 284         irq_ptr->sch_token = token;
 285 
 286         DBF_EVENT("V=V:1");
 287         DBF_EVENT("%8lx", irq_ptr->sch_token);
 288         return;
 289 
 290 no_qebsm:
 291         irq_ptr->sch_token = 0;
 292         irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
 293         DBF_EVENT("noV=V");
 294 }
 295 
 296 /*
 297  * If there is a qdio_irq we use the chsc_page and store the information
 298  * in the qdio_irq, otherwise we copy it to the specified structure.
 299  */
 300 int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
 301                         struct subchannel_id *schid,
 302                         struct qdio_ssqd_desc *data)
 303 {
 304         struct chsc_ssqd_area *ssqd;
 305         int rc;
 306 
 307         DBF_EVENT("getssqd:%4x", schid->sch_no);
 308         if (!irq_ptr) {
 309                 ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL);
 310                 if (!ssqd)
 311                         return -ENOMEM;
 312         } else {
 313                 ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
 314         }
 315 
 316         rc = chsc_ssqd(*schid, ssqd);
 317         if (rc)
 318                 goto out;
 319 
 320         if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) ||
 321             !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) ||
 322             (ssqd->qdio_ssqd.sch != schid->sch_no))
 323                 rc = -EINVAL;
 324 
 325         if (!rc)
 326                 memcpy(data, &ssqd->qdio_ssqd, sizeof(*data));
 327 
 328 out:
 329         if (!irq_ptr)
 330                 free_page((unsigned long)ssqd);
 331 
 332         return rc;
 333 }
 334 
 335 void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
 336 {
 337         unsigned char qdioac;
 338         int rc;
 339 
 340         rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, &irq_ptr->ssqd_desc);
 341         if (rc) {
 342                 DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no);
 343                 DBF_ERROR("rc:%x", rc);
 344                 /* all flags set, worst case */
 345                 qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED |
 346                          AC1_SIGA_SYNC_NEEDED;
 347         } else
 348                 qdioac = irq_ptr->ssqd_desc.qdioac1;
 349 
 350         check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token);
 351         process_ac_flags(irq_ptr, qdioac);
 352         DBF_EVENT("ac 1:%2x 2:%4x", qdioac, irq_ptr->ssqd_desc.qdioac2);
 353         DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac);
 354 }
 355 
 356 void qdio_release_memory(struct qdio_irq *irq_ptr)
 357 {
 358         struct qdio_q *q;
 359         int i;
 360 
 361         /*
 362          * Must check queue array manually since irq_ptr->nr_input_queues /
 363          * irq_ptr->nr_input_queues may not yet be set.
 364          */
 365         for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
 366                 q = irq_ptr->input_qs[i];
 367                 if (q) {
 368                         free_page((unsigned long) q->slib);
 369                         kmem_cache_free(qdio_q_cache, q);
 370                 }
 371         }
 372         for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
 373                 q = irq_ptr->output_qs[i];
 374                 if (q) {
 375                         if (q->u.out.use_cq) {
 376                                 int n;
 377 
 378                                 for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) {
 379                                         struct qaob *aob = q->u.out.aobs[n];
 380                                         if (aob) {
 381                                                 qdio_release_aob(aob);
 382                                                 q->u.out.aobs[n] = NULL;
 383                                         }
 384                                 }
 385 
 386                                 qdio_disable_async_operation(&q->u.out);
 387                         }
 388                         free_page((unsigned long) q->slib);
 389                         kmem_cache_free(qdio_q_cache, q);
 390                 }
 391         }
 392         free_page((unsigned long) irq_ptr->qdr);
 393         free_page(irq_ptr->chsc_page);
 394         free_page((unsigned long) irq_ptr);
 395 }
 396 
 397 static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr,
 398                                      struct qdio_q **irq_ptr_qs,
 399                                      int i, int nr)
 400 {
 401         irq_ptr->qdr->qdf0[i + nr].sliba =
 402                 (unsigned long)irq_ptr_qs[i]->slib;
 403 
 404         irq_ptr->qdr->qdf0[i + nr].sla =
 405                 (unsigned long)irq_ptr_qs[i]->sl;
 406 
 407         irq_ptr->qdr->qdf0[i + nr].slsba =
 408                 (unsigned long)&irq_ptr_qs[i]->slsb.val[0];
 409 
 410         irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4;
 411         irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4;
 412         irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4;
 413         irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4;
 414 }
 415 
 416 static void setup_qdr(struct qdio_irq *irq_ptr,
 417                       struct qdio_initialize *qdio_init)
 418 {
 419         int i;
 420 
 421         irq_ptr->qdr->qfmt = qdio_init->q_format;
 422         irq_ptr->qdr->ac = qdio_init->qdr_ac;
 423         irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs;
 424         irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs;
 425         irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */
 426         irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4;
 427         irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib;
 428         irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4;
 429 
 430         for (i = 0; i < qdio_init->no_input_qs; i++)
 431                 __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0);
 432 
 433         for (i = 0; i < qdio_init->no_output_qs; i++)
 434                 __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i,
 435                                          qdio_init->no_input_qs);
 436 }
 437 
 438 static void setup_qib(struct qdio_irq *irq_ptr,
 439                       struct qdio_initialize *init_data)
 440 {
 441         if (qebsm_possible())
 442                 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
 443 
 444         irq_ptr->qib.rflags |= init_data->qib_rflags;
 445 
 446         irq_ptr->qib.qfmt = init_data->q_format;
 447         if (init_data->no_input_qs)
 448                 irq_ptr->qib.isliba =
 449                         (unsigned long)(irq_ptr->input_qs[0]->slib);
 450         if (init_data->no_output_qs)
 451                 irq_ptr->qib.osliba =
 452                         (unsigned long)(irq_ptr->output_qs[0]->slib);
 453         memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8);
 454 }
 455 
 456 int qdio_setup_irq(struct qdio_initialize *init_data)
 457 {
 458         struct ciw *ciw;
 459         struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data;
 460 
 461         memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib));
 462         memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag));
 463         memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw));
 464         memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc));
 465         memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
 466 
 467         irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL;
 468         irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0;
 469 
 470         /* wipes qib.ac, required by ar7063 */
 471         memset(irq_ptr->qdr, 0, sizeof(struct qdr));
 472 
 473         irq_ptr->int_parm = init_data->int_parm;
 474         irq_ptr->nr_input_qs = init_data->no_input_qs;
 475         irq_ptr->nr_output_qs = init_data->no_output_qs;
 476         irq_ptr->cdev = init_data->cdev;
 477         irq_ptr->scan_threshold = init_data->scan_threshold;
 478         ccw_device_get_schid(irq_ptr->cdev, &irq_ptr->schid);
 479         setup_queues(irq_ptr, init_data);
 480 
 481         setup_qib(irq_ptr, init_data);
 482         qdio_setup_thinint(irq_ptr);
 483         set_impl_params(irq_ptr, init_data->qib_param_field_format,
 484                         init_data->qib_param_field,
 485                         init_data->input_slib_elements,
 486                         init_data->output_slib_elements);
 487 
 488         /* fill input and output descriptors */
 489         setup_qdr(irq_ptr, init_data);
 490 
 491         /* qdr, qib, sls, slsbs, slibs, sbales are filled now */
 492 
 493         /* get qdio commands */
 494         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
 495         if (!ciw) {
 496                 DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no);
 497                 return -EINVAL;
 498         }
 499         irq_ptr->equeue = *ciw;
 500 
 501         ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
 502         if (!ciw) {
 503                 DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no);
 504                 return -EINVAL;
 505         }
 506         irq_ptr->aqueue = *ciw;
 507 
 508         /* set new interrupt handler */
 509         spin_lock_irq(get_ccwdev_lock(irq_ptr->cdev));
 510         irq_ptr->orig_handler = init_data->cdev->handler;
 511         init_data->cdev->handler = qdio_int_handler;
 512         spin_unlock_irq(get_ccwdev_lock(irq_ptr->cdev));
 513         return 0;
 514 }
 515 
 516 void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
 517                                 struct ccw_device *cdev)
 518 {
 519         char s[80];
 520 
 521         snprintf(s, 80, "qdio: %s %s on SC %x using "
 522                  "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n",
 523                  dev_name(&cdev->dev),
 524                  (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" :
 525                         ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"),
 526                  irq_ptr->schid.sch_no,
 527                  is_thinint_irq(irq_ptr),
 528                  (irq_ptr->sch_token) ? 1 : 0,
 529                  pci_out_supported(irq_ptr) ? 1 : 0,
 530                  css_general_characteristics.aif_tdd,
 531                  (irq_ptr->siga_flag.input) ? "R" : " ",
 532                  (irq_ptr->siga_flag.output) ? "W" : " ",
 533                  (irq_ptr->siga_flag.sync) ? "S" : " ",
 534                  (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ",
 535                  (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " ");
 536         printk(KERN_INFO "%s", s);
 537 }
 538 
 539 int qdio_enable_async_operation(struct qdio_output_q *outq)
 540 {
 541         outq->aobs = kcalloc(QDIO_MAX_BUFFERS_PER_Q, sizeof(struct qaob *),
 542                              GFP_ATOMIC);
 543         if (!outq->aobs) {
 544                 outq->use_cq = 0;
 545                 return -ENOMEM;
 546         }
 547         outq->use_cq = 1;
 548         return 0;
 549 }
 550 
 551 void qdio_disable_async_operation(struct qdio_output_q *q)
 552 {
 553         kfree(q->aobs);
 554         q->aobs = NULL;
 555         q->use_cq = 0;
 556 }
 557 
 558 int __init qdio_setup_init(void)
 559 {
 560         int rc;
 561 
 562         qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
 563                                          256, 0, NULL);
 564         if (!qdio_q_cache)
 565                 return -ENOMEM;
 566 
 567         qdio_aob_cache = kmem_cache_create("qdio_aob",
 568                                         sizeof(struct qaob),
 569                                         sizeof(struct qaob),
 570                                         0,
 571                                         NULL);
 572         if (!qdio_aob_cache) {
 573                 rc = -ENOMEM;
 574                 goto free_qdio_q_cache;
 575         }
 576 
 577         /* Check for OSA/FCP thin interrupts (bit 67). */
 578         DBF_EVENT("thinint:%1d",
 579                   (css_general_characteristics.aif_osa) ? 1 : 0);
 580 
 581         /* Check for QEBSM support in general (bit 58). */
 582         DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0);
 583         rc = 0;
 584 out:
 585         return rc;
 586 free_qdio_q_cache:
 587         kmem_cache_destroy(qdio_q_cache);
 588         goto out;
 589 }
 590 
 591 void qdio_setup_exit(void)
 592 {
 593         kmem_cache_destroy(qdio_aob_cache);
 594         kmem_cache_destroy(qdio_q_cache);
 595 }