1 /*
2 * driver/s390/cio/qdio_setup.c
3 *
4 * qdio queue initialization
5 *
6 * Copyright (C) IBM Corp. 2008
7 * Author(s): Jan Glauber <jang@linux.vnet.ibm.com>
8 */
9 #include <linux/kernel.h>
10 #include <linux/slab.h>
11 #include <linux/export.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 static struct kmem_cache *qdio_q_cache;
23 static struct kmem_cache *qdio_aob_cache;
24
qdio_allocate_aob(void)25 struct qaob *qdio_allocate_aob(void)
26 {
27 return kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC);
28 }
29 EXPORT_SYMBOL_GPL(qdio_allocate_aob);
30
qdio_release_aob(struct qaob * aob)31 void qdio_release_aob(struct qaob *aob)
32 {
33 kmem_cache_free(qdio_aob_cache, aob);
34 }
35 EXPORT_SYMBOL_GPL(qdio_release_aob);
36
37 /*
38 * qebsm is only available under 64bit but the adapter sets the feature
39 * flag anyway, so we manually override it.
40 */
qebsm_possible(void)41 static inline int qebsm_possible(void)
42 {
43 #ifdef CONFIG_64BIT
44 return css_general_characteristics.qebsm;
45 #endif
46 return 0;
47 }
48
49 /*
50 * qib_param_field: pointer to 128 bytes or NULL, if no param field
51 * nr_input_qs: pointer to nr_queues*128 words of data or NULL
52 */
set_impl_params(struct qdio_irq * irq_ptr,unsigned int qib_param_field_format,unsigned char * qib_param_field,unsigned long * input_slib_elements,unsigned long * output_slib_elements)53 static void set_impl_params(struct qdio_irq *irq_ptr,
54 unsigned int qib_param_field_format,
55 unsigned char *qib_param_field,
56 unsigned long *input_slib_elements,
57 unsigned long *output_slib_elements)
58 {
59 struct qdio_q *q;
60 int i, j;
61
62 if (!irq_ptr)
63 return;
64
65 irq_ptr->qib.pfmt = qib_param_field_format;
66 if (qib_param_field)
67 memcpy(irq_ptr->qib.parm, qib_param_field,
68 QDIO_MAX_BUFFERS_PER_Q);
69
70 if (!input_slib_elements)
71 goto output;
72
73 for_each_input_queue(irq_ptr, q, i) {
74 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
75 q->slib->slibe[j].parms =
76 input_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j];
77 }
78 output:
79 if (!output_slib_elements)
80 return;
81
82 for_each_output_queue(irq_ptr, q, i) {
83 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
84 q->slib->slibe[j].parms =
85 output_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j];
86 }
87 }
88
__qdio_allocate_qs(struct qdio_q ** irq_ptr_qs,int nr_queues)89 static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
90 {
91 struct qdio_q *q;
92 int i;
93
94 for (i = 0; i < nr_queues; i++) {
95 q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
96 if (!q)
97 return -ENOMEM;
98
99 q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
100 if (!q->slib) {
101 kmem_cache_free(qdio_q_cache, q);
102 return -ENOMEM;
103 }
104 irq_ptr_qs[i] = q;
105 }
106 return 0;
107 }
108
qdio_allocate_qs(struct qdio_irq * irq_ptr,int nr_input_qs,int nr_output_qs)109 int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs)
110 {
111 int rc;
112
113 rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs);
114 if (rc)
115 return rc;
116 rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs);
117 return rc;
118 }
119
setup_queues_misc(struct qdio_q * q,struct qdio_irq * irq_ptr,qdio_handler_t * handler,int i)120 static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
121 qdio_handler_t *handler, int i)
122 {
123 struct slib *slib = q->slib;
124
125 /* queue must be cleared for qdio_establish */
126 memset(q, 0, sizeof(*q));
127 memset(slib, 0, PAGE_SIZE);
128 q->slib = slib;
129 q->irq_ptr = irq_ptr;
130 q->mask = 1 << (31 - i);
131 q->nr = i;
132 q->handler = handler;
133 }
134
setup_storage_lists(struct qdio_q * q,struct qdio_irq * irq_ptr,void ** sbals_array,int i)135 static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
136 void **sbals_array, int i)
137 {
138 struct qdio_q *prev;
139 int j;
140
141 DBF_HEX(&q, sizeof(void *));
142 q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2);
143
144 /* fill in sbal */
145 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) {
146 q->sbal[j] = *sbals_array++;
147 BUG_ON((unsigned long)q->sbal[j] & 0xff);
148 }
149
150 /* fill in slib */
151 if (i > 0) {
152 prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1]
153 : irq_ptr->output_qs[i - 1];
154 prev->slib->nsliba = (unsigned long)q->slib;
155 }
156
157 q->slib->sla = (unsigned long)q->sl;
158 q->slib->slsba = (unsigned long)&q->slsb.val[0];
159
160 /* fill in sl */
161 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
162 q->sl->element[j].sbal = (unsigned long)q->sbal[j];
163 }
164
setup_queues(struct qdio_irq * irq_ptr,struct qdio_initialize * qdio_init)165 static void setup_queues(struct qdio_irq *irq_ptr,
166 struct qdio_initialize *qdio_init)
167 {
168 struct qdio_q *q;
169 void **input_sbal_array = qdio_init->input_sbal_addr_array;
170 void **output_sbal_array = qdio_init->output_sbal_addr_array;
171 struct qdio_outbuf_state *output_sbal_state_array =
172 qdio_init->output_sbal_state_array;
173 int i;
174
175 for_each_input_queue(irq_ptr, q, i) {
176 DBF_EVENT("inq:%1d", i);
177 setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i);
178
179 q->is_input_q = 1;
180 q->u.in.queue_start_poll = qdio_init->queue_start_poll_array ?
181 qdio_init->queue_start_poll_array[i] : NULL;
182
183 setup_storage_lists(q, irq_ptr, input_sbal_array, i);
184 input_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
185
186 if (is_thinint_irq(irq_ptr)) {
187 tasklet_init(&q->tasklet, tiqdio_inbound_processing,
188 (unsigned long) q);
189 } else {
190 tasklet_init(&q->tasklet, qdio_inbound_processing,
191 (unsigned long) q);
192 }
193 }
194
195 for_each_output_queue(irq_ptr, q, i) {
196 DBF_EVENT("outq:%1d", i);
197 setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i);
198
199 q->u.out.sbal_state = output_sbal_state_array;
200 output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q;
201
202 q->is_input_q = 0;
203 q->u.out.scan_threshold = qdio_init->scan_threshold;
204 setup_storage_lists(q, irq_ptr, output_sbal_array, i);
205 output_sbal_array += QDIO_MAX_BUFFERS_PER_Q;
206
207 tasklet_init(&q->tasklet, qdio_outbound_processing,
208 (unsigned long) q);
209 setup_timer(&q->u.out.timer, (void(*)(unsigned long))
210 &qdio_outbound_timer, (unsigned long)q);
211 }
212 }
213
process_ac_flags(struct qdio_irq * irq_ptr,unsigned char qdioac)214 static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac)
215 {
216 if (qdioac & AC1_SIGA_INPUT_NEEDED)
217 irq_ptr->siga_flag.input = 1;
218 if (qdioac & AC1_SIGA_OUTPUT_NEEDED)
219 irq_ptr->siga_flag.output = 1;
220 if (qdioac & AC1_SIGA_SYNC_NEEDED)
221 irq_ptr->siga_flag.sync = 1;
222 if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT))
223 irq_ptr->siga_flag.sync_after_ai = 1;
224 if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI))
225 irq_ptr->siga_flag.sync_out_after_pci = 1;
226 }
227
check_and_setup_qebsm(struct qdio_irq * irq_ptr,unsigned char qdioac,unsigned long token)228 static void check_and_setup_qebsm(struct qdio_irq *irq_ptr,
229 unsigned char qdioac, unsigned long token)
230 {
231 if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM))
232 goto no_qebsm;
233 if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) ||
234 (!(qdioac & AC1_SC_QEBSM_ENABLED)))
235 goto no_qebsm;
236
237 irq_ptr->sch_token = token;
238
239 DBF_EVENT("V=V:1");
240 DBF_EVENT("%8lx", irq_ptr->sch_token);
241 return;
242
243 no_qebsm:
244 irq_ptr->sch_token = 0;
245 irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM;
246 DBF_EVENT("noV=V");
247 }
248
249 /*
250 * If there is a qdio_irq we use the chsc_page and store the information
251 * in the qdio_irq, otherwise we copy it to the specified structure.
252 */
qdio_setup_get_ssqd(struct qdio_irq * irq_ptr,struct subchannel_id * schid,struct qdio_ssqd_desc * data)253 int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
254 struct subchannel_id *schid,
255 struct qdio_ssqd_desc *data)
256 {
257 struct chsc_ssqd_area *ssqd;
258 int rc;
259
260 DBF_EVENT("getssqd:%4x", schid->sch_no);
261 if (irq_ptr != NULL)
262 ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
263 else
264 ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL);
265 memset(ssqd, 0, PAGE_SIZE);
266
267 ssqd->request = (struct chsc_header) {
268 .length = 0x0010,
269 .code = 0x0024,
270 };
271 ssqd->first_sch = schid->sch_no;
272 ssqd->last_sch = schid->sch_no;
273 ssqd->ssid = schid->ssid;
274
275 if (chsc(ssqd))
276 return -EIO;
277 rc = chsc_error_from_response(ssqd->response.code);
278 if (rc)
279 return rc;
280
281 if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) ||
282 !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) ||
283 (ssqd->qdio_ssqd.sch != schid->sch_no))
284 return -EINVAL;
285
286 if (irq_ptr != NULL)
287 memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
288 sizeof(struct qdio_ssqd_desc));
289 else {
290 memcpy(data, &ssqd->qdio_ssqd,
291 sizeof(struct qdio_ssqd_desc));
292 free_page((unsigned long)ssqd);
293 }
294 return 0;
295 }
296
qdio_setup_ssqd_info(struct qdio_irq * irq_ptr)297 void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
298 {
299 unsigned char qdioac;
300 int rc;
301
302 rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL);
303 if (rc) {
304 DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no);
305 DBF_ERROR("rc:%x", rc);
306 /* all flags set, worst case */
307 qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED |
308 AC1_SIGA_SYNC_NEEDED;
309 } else
310 qdioac = irq_ptr->ssqd_desc.qdioac1;
311
312 check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token);
313 process_ac_flags(irq_ptr, qdioac);
314 DBF_EVENT("ac 1:%2x 2:%4x", qdioac, irq_ptr->ssqd_desc.qdioac2);
315 DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac);
316 }
317
qdio_release_memory(struct qdio_irq * irq_ptr)318 void qdio_release_memory(struct qdio_irq *irq_ptr)
319 {
320 struct qdio_q *q;
321 int i;
322
323 /*
324 * Must check queue array manually since irq_ptr->nr_input_queues /
325 * irq_ptr->nr_input_queues may not yet be set.
326 */
327 for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
328 q = irq_ptr->input_qs[i];
329 if (q) {
330 free_page((unsigned long) q->slib);
331 kmem_cache_free(qdio_q_cache, q);
332 }
333 }
334 for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) {
335 q = irq_ptr->output_qs[i];
336 if (q) {
337 if (q->u.out.use_cq) {
338 int n;
339
340 for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) {
341 struct qaob *aob = q->u.out.aobs[n];
342 if (aob) {
343 qdio_release_aob(aob);
344 q->u.out.aobs[n] = NULL;
345 }
346 }
347
348 qdio_disable_async_operation(&q->u.out);
349 }
350 free_page((unsigned long) q->slib);
351 kmem_cache_free(qdio_q_cache, q);
352 }
353 }
354 free_page((unsigned long) irq_ptr->qdr);
355 free_page(irq_ptr->chsc_page);
356 free_page((unsigned long) irq_ptr);
357 }
358
__qdio_allocate_fill_qdr(struct qdio_irq * irq_ptr,struct qdio_q ** irq_ptr_qs,int i,int nr)359 static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr,
360 struct qdio_q **irq_ptr_qs,
361 int i, int nr)
362 {
363 irq_ptr->qdr->qdf0[i + nr].sliba =
364 (unsigned long)irq_ptr_qs[i]->slib;
365
366 irq_ptr->qdr->qdf0[i + nr].sla =
367 (unsigned long)irq_ptr_qs[i]->sl;
368
369 irq_ptr->qdr->qdf0[i + nr].slsba =
370 (unsigned long)&irq_ptr_qs[i]->slsb.val[0];
371
372 irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4;
373 irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4;
374 irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4;
375 irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4;
376 }
377
setup_qdr(struct qdio_irq * irq_ptr,struct qdio_initialize * qdio_init)378 static void setup_qdr(struct qdio_irq *irq_ptr,
379 struct qdio_initialize *qdio_init)
380 {
381 int i;
382
383 irq_ptr->qdr->qfmt = qdio_init->q_format;
384 irq_ptr->qdr->ac = qdio_init->qdr_ac;
385 irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs;
386 irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs;
387 irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */
388 irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4;
389 irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib;
390 irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4;
391
392 for (i = 0; i < qdio_init->no_input_qs; i++)
393 __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0);
394
395 for (i = 0; i < qdio_init->no_output_qs; i++)
396 __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i,
397 qdio_init->no_input_qs);
398 }
399
setup_qib(struct qdio_irq * irq_ptr,struct qdio_initialize * init_data)400 static void setup_qib(struct qdio_irq *irq_ptr,
401 struct qdio_initialize *init_data)
402 {
403 if (qebsm_possible())
404 irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
405
406 irq_ptr->qib.rflags |= init_data->qib_rflags;
407
408 irq_ptr->qib.qfmt = init_data->q_format;
409 if (init_data->no_input_qs)
410 irq_ptr->qib.isliba =
411 (unsigned long)(irq_ptr->input_qs[0]->slib);
412 if (init_data->no_output_qs)
413 irq_ptr->qib.osliba =
414 (unsigned long)(irq_ptr->output_qs[0]->slib);
415 memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8);
416 }
417
qdio_setup_irq(struct qdio_initialize * init_data)418 int qdio_setup_irq(struct qdio_initialize *init_data)
419 {
420 struct ciw *ciw;
421 struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data;
422 int rc;
423
424 memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib));
425 memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag));
426 memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw));
427 memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc));
428 memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
429
430 irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL;
431 irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0;
432
433 /* wipes qib.ac, required by ar7063 */
434 memset(irq_ptr->qdr, 0, sizeof(struct qdr));
435
436 irq_ptr->int_parm = init_data->int_parm;
437 irq_ptr->nr_input_qs = init_data->no_input_qs;
438 irq_ptr->nr_output_qs = init_data->no_output_qs;
439
440 irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev);
441 irq_ptr->cdev = init_data->cdev;
442 setup_queues(irq_ptr, init_data);
443
444 setup_qib(irq_ptr, init_data);
445 qdio_setup_thinint(irq_ptr);
446 set_impl_params(irq_ptr, init_data->qib_param_field_format,
447 init_data->qib_param_field,
448 init_data->input_slib_elements,
449 init_data->output_slib_elements);
450
451 /* fill input and output descriptors */
452 setup_qdr(irq_ptr, init_data);
453
454 /* qdr, qib, sls, slsbs, slibs, sbales are filled now */
455
456 /* get qdio commands */
457 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE);
458 if (!ciw) {
459 DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no);
460 rc = -EINVAL;
461 goto out_err;
462 }
463 irq_ptr->equeue = *ciw;
464
465 ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE);
466 if (!ciw) {
467 DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no);
468 rc = -EINVAL;
469 goto out_err;
470 }
471 irq_ptr->aqueue = *ciw;
472
473 /* set new interrupt handler */
474 irq_ptr->orig_handler = init_data->cdev->handler;
475 init_data->cdev->handler = qdio_int_handler;
476 return 0;
477 out_err:
478 qdio_release_memory(irq_ptr);
479 return rc;
480 }
481
qdio_print_subchannel_info(struct qdio_irq * irq_ptr,struct ccw_device * cdev)482 void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
483 struct ccw_device *cdev)
484 {
485 char s[80];
486
487 snprintf(s, 80, "qdio: %s %s on SC %x using "
488 "AI:%d QEBSM:%d PCI:%d TDD:%d SIGA:%s%s%s%s%s\n",
489 dev_name(&cdev->dev),
490 (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" :
491 ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"),
492 irq_ptr->schid.sch_no,
493 is_thinint_irq(irq_ptr),
494 (irq_ptr->sch_token) ? 1 : 0,
495 (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0,
496 css_general_characteristics.aif_tdd,
497 (irq_ptr->siga_flag.input) ? "R" : " ",
498 (irq_ptr->siga_flag.output) ? "W" : " ",
499 (irq_ptr->siga_flag.sync) ? "S" : " ",
500 (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ",
501 (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " ");
502 printk(KERN_INFO "%s", s);
503 }
504
qdio_enable_async_operation(struct qdio_output_q * outq)505 int qdio_enable_async_operation(struct qdio_output_q *outq)
506 {
507 outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q,
508 GFP_ATOMIC);
509 if (!outq->aobs) {
510 outq->use_cq = 0;
511 return -ENOMEM;
512 }
513 outq->use_cq = 1;
514 return 0;
515 }
516
qdio_disable_async_operation(struct qdio_output_q * q)517 void qdio_disable_async_operation(struct qdio_output_q *q)
518 {
519 kfree(q->aobs);
520 q->aobs = NULL;
521 q->use_cq = 0;
522 }
523
qdio_setup_init(void)524 int __init qdio_setup_init(void)
525 {
526 int rc;
527
528 qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q),
529 256, 0, NULL);
530 if (!qdio_q_cache)
531 return -ENOMEM;
532
533 qdio_aob_cache = kmem_cache_create("qdio_aob",
534 sizeof(struct qaob),
535 sizeof(struct qaob),
536 0,
537 NULL);
538 if (!qdio_aob_cache) {
539 rc = -ENOMEM;
540 goto free_qdio_q_cache;
541 }
542
543 /* Check for OSA/FCP thin interrupts (bit 67). */
544 DBF_EVENT("thinint:%1d",
545 (css_general_characteristics.aif_osa) ? 1 : 0);
546
547 /* Check for QEBSM support in general (bit 58). */
548 DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0);
549 rc = 0;
550 out:
551 return rc;
552 free_qdio_q_cache:
553 kmem_cache_destroy(qdio_q_cache);
554 goto out;
555 }
556
qdio_setup_exit(void)557 void qdio_setup_exit(void)
558 {
559 kmem_cache_destroy(qdio_aob_cache);
560 kmem_cache_destroy(qdio_q_cache);
561 }
562