Commit | Line | Data |
---|---|---|
779e6e1c JG |
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> | |
3a4c5d59 | 11 | #include <linux/export.h> |
779e6e1c JG |
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; | |
104ea556 | 23 | static struct kmem_cache *qdio_aob_cache; |
24 | ||
400d8291 | 25 | struct qaob *qdio_allocate_aob(void) |
104ea556 | 26 | { |
400d8291 | 27 | return kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC); |
104ea556 | 28 | } |
29 | EXPORT_SYMBOL_GPL(qdio_allocate_aob); | |
30 | ||
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); | |
779e6e1c JG |
36 | |
37 | /* | |
38 | * qebsm is only available under 64bit but the adapter sets the feature | |
39 | * flag anyway, so we manually override it. | |
40 | */ | |
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 | */ | |
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 | ||
779e6e1c JG |
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 | ||
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; | |
779e6e1c JG |
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 | } | |
779e6e1c JG |
104 | irq_ptr_qs[i] = q; |
105 | } | |
106 | return 0; | |
107 | } | |
108 | ||
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 | ||
120 | static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr, | |
121 | qdio_handler_t *handler, int i) | |
122 | { | |
5382fe11 | 123 | struct slib *slib = q->slib; |
779e6e1c | 124 | |
5382fe11 JG |
125 | /* queue must be cleared for qdio_establish */ |
126 | memset(q, 0, sizeof(*q)); | |
127 | memset(slib, 0, PAGE_SIZE); | |
128 | q->slib = slib; | |
779e6e1c JG |
129 | q->irq_ptr = irq_ptr; |
130 | q->mask = 1 << (31 - i); | |
131 | q->nr = i; | |
132 | q->handler = handler; | |
133 | } | |
134 | ||
135 | static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, | |
22f99347 | 136 | void **sbals_array, int i) |
779e6e1c JG |
137 | { |
138 | struct qdio_q *prev; | |
139 | int j; | |
140 | ||
22f99347 | 141 | DBF_HEX(&q, sizeof(void *)); |
779e6e1c JG |
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++; | |
7883097f | 147 | BUG_ON((unsigned long)q->sbal[j] & 0xff); |
779e6e1c JG |
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]; | |
779e6e1c JG |
163 | } |
164 | ||
165 | static void setup_queues(struct qdio_irq *irq_ptr, | |
166 | struct qdio_initialize *qdio_init) | |
167 | { | |
779e6e1c JG |
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; | |
104ea556 | 171 | struct qdio_outbuf_state *output_sbal_state_array = |
172 | qdio_init->output_sbal_state_array; | |
779e6e1c JG |
173 | int i; |
174 | ||
779e6e1c | 175 | for_each_input_queue(irq_ptr, q, i) { |
104ea556 | 176 | DBF_EVENT("inq:%1d", i); |
779e6e1c JG |
177 | setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); |
178 | ||
179 | q->is_input_q = 1; | |
104ea556 | 180 | q->u.in.queue_start_poll = qdio_init->queue_start_poll[i]; |
181 | ||
22f99347 | 182 | setup_storage_lists(q, irq_ptr, input_sbal_array, i); |
779e6e1c JG |
183 | input_sbal_array += QDIO_MAX_BUFFERS_PER_Q; |
184 | ||
104ea556 | 185 | if (is_thinint_irq(irq_ptr)) { |
779e6e1c JG |
186 | tasklet_init(&q->tasklet, tiqdio_inbound_processing, |
187 | (unsigned long) q); | |
104ea556 | 188 | } else { |
779e6e1c JG |
189 | tasklet_init(&q->tasklet, qdio_inbound_processing, |
190 | (unsigned long) q); | |
104ea556 | 191 | } |
779e6e1c JG |
192 | } |
193 | ||
194 | for_each_output_queue(irq_ptr, q, i) { | |
22f99347 | 195 | DBF_EVENT("outq:%1d", i); |
779e6e1c JG |
196 | setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); |
197 | ||
104ea556 | 198 | q->u.out.sbal_state = output_sbal_state_array; |
199 | output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q; | |
200 | ||
779e6e1c | 201 | q->is_input_q = 0; |
3d6c76ff | 202 | q->u.out.scan_threshold = qdio_init->scan_threshold; |
22f99347 | 203 | setup_storage_lists(q, irq_ptr, output_sbal_array, i); |
779e6e1c JG |
204 | output_sbal_array += QDIO_MAX_BUFFERS_PER_Q; |
205 | ||
206 | tasklet_init(&q->tasklet, qdio_outbound_processing, | |
207 | (unsigned long) q); | |
208 | setup_timer(&q->u.out.timer, (void(*)(unsigned long)) | |
209 | &qdio_outbound_timer, (unsigned long)q); | |
210 | } | |
211 | } | |
212 | ||
213 | static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) | |
214 | { | |
215 | if (qdioac & AC1_SIGA_INPUT_NEEDED) | |
216 | irq_ptr->siga_flag.input = 1; | |
217 | if (qdioac & AC1_SIGA_OUTPUT_NEEDED) | |
218 | irq_ptr->siga_flag.output = 1; | |
219 | if (qdioac & AC1_SIGA_SYNC_NEEDED) | |
220 | irq_ptr->siga_flag.sync = 1; | |
90adac58 JG |
221 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)) |
222 | irq_ptr->siga_flag.sync_after_ai = 1; | |
223 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)) | |
224 | irq_ptr->siga_flag.sync_out_after_pci = 1; | |
779e6e1c JG |
225 | } |
226 | ||
227 | static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, | |
228 | unsigned char qdioac, unsigned long token) | |
229 | { | |
779e6e1c JG |
230 | if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) |
231 | goto no_qebsm; | |
232 | if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || | |
233 | (!(qdioac & AC1_SC_QEBSM_ENABLED))) | |
234 | goto no_qebsm; | |
235 | ||
236 | irq_ptr->sch_token = token; | |
237 | ||
22f99347 JG |
238 | DBF_EVENT("V=V:1"); |
239 | DBF_EVENT("%8lx", irq_ptr->sch_token); | |
779e6e1c JG |
240 | return; |
241 | ||
242 | no_qebsm: | |
243 | irq_ptr->sch_token = 0; | |
244 | irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; | |
22f99347 | 245 | DBF_EVENT("noV=V"); |
779e6e1c JG |
246 | } |
247 | ||
bbd50e17 JG |
248 | /* |
249 | * If there is a qdio_irq we use the chsc_page and store the information | |
250 | * in the qdio_irq, otherwise we copy it to the specified structure. | |
251 | */ | |
252 | int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, | |
253 | struct subchannel_id *schid, | |
254 | struct qdio_ssqd_desc *data) | |
779e6e1c JG |
255 | { |
256 | struct chsc_ssqd_area *ssqd; | |
257 | int rc; | |
258 | ||
22f99347 | 259 | DBF_EVENT("getssqd:%4x", schid->sch_no); |
bbd50e17 JG |
260 | if (irq_ptr != NULL) |
261 | ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; | |
262 | else | |
263 | ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL); | |
779e6e1c JG |
264 | memset(ssqd, 0, PAGE_SIZE); |
265 | ||
266 | ssqd->request = (struct chsc_header) { | |
267 | .length = 0x0010, | |
268 | .code = 0x0024, | |
269 | }; | |
bbd50e17 JG |
270 | ssqd->first_sch = schid->sch_no; |
271 | ssqd->last_sch = schid->sch_no; | |
272 | ssqd->ssid = schid->ssid; | |
779e6e1c JG |
273 | |
274 | if (chsc(ssqd)) | |
275 | return -EIO; | |
276 | rc = chsc_error_from_response(ssqd->response.code); | |
277 | if (rc) | |
278 | return rc; | |
279 | ||
280 | if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || | |
281 | !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || | |
bbd50e17 | 282 | (ssqd->qdio_ssqd.sch != schid->sch_no)) |
779e6e1c JG |
283 | return -EINVAL; |
284 | ||
bbd50e17 JG |
285 | if (irq_ptr != NULL) |
286 | memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd, | |
287 | sizeof(struct qdio_ssqd_desc)); | |
288 | else { | |
289 | memcpy(data, &ssqd->qdio_ssqd, | |
290 | sizeof(struct qdio_ssqd_desc)); | |
291 | free_page((unsigned long)ssqd); | |
292 | } | |
779e6e1c JG |
293 | return 0; |
294 | } | |
295 | ||
296 | void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) | |
297 | { | |
298 | unsigned char qdioac; | |
779e6e1c JG |
299 | int rc; |
300 | ||
bbd50e17 | 301 | rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL); |
779e6e1c | 302 | if (rc) { |
22f99347 JG |
303 | DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no); |
304 | DBF_ERROR("rc:%x", rc); | |
779e6e1c JG |
305 | /* all flags set, worst case */ |
306 | qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | | |
307 | AC1_SIGA_SYNC_NEEDED; | |
308 | } else | |
309 | qdioac = irq_ptr->ssqd_desc.qdioac1; | |
310 | ||
311 | check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); | |
312 | process_ac_flags(irq_ptr, qdioac); | |
22f99347 | 313 | DBF_EVENT("qdioac:%4x", qdioac); |
779e6e1c JG |
314 | } |
315 | ||
316 | void qdio_release_memory(struct qdio_irq *irq_ptr) | |
317 | { | |
318 | struct qdio_q *q; | |
319 | int i; | |
320 | ||
321 | /* | |
322 | * Must check queue array manually since irq_ptr->nr_input_queues / | |
323 | * irq_ptr->nr_input_queues may not yet be set. | |
324 | */ | |
325 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
326 | q = irq_ptr->input_qs[i]; | |
327 | if (q) { | |
328 | free_page((unsigned long) q->slib); | |
329 | kmem_cache_free(qdio_q_cache, q); | |
330 | } | |
331 | } | |
332 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
333 | q = irq_ptr->output_qs[i]; | |
334 | if (q) { | |
104ea556 | 335 | if (q->u.out.use_cq) { |
336 | int n; | |
337 | ||
338 | for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) { | |
339 | struct qaob *aob = q->u.out.aobs[n]; | |
340 | if (aob) { | |
341 | qdio_release_aob(aob); | |
342 | q->u.out.aobs[n] = NULL; | |
343 | } | |
344 | } | |
345 | ||
346 | qdio_disable_async_operation(&q->u.out); | |
347 | } | |
779e6e1c JG |
348 | free_page((unsigned long) q->slib); |
349 | kmem_cache_free(qdio_q_cache, q); | |
350 | } | |
351 | } | |
3b8e3004 | 352 | free_page((unsigned long) irq_ptr->qdr); |
779e6e1c JG |
353 | free_page(irq_ptr->chsc_page); |
354 | free_page((unsigned long) irq_ptr); | |
355 | } | |
356 | ||
357 | static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, | |
358 | struct qdio_q **irq_ptr_qs, | |
359 | int i, int nr) | |
360 | { | |
361 | irq_ptr->qdr->qdf0[i + nr].sliba = | |
362 | (unsigned long)irq_ptr_qs[i]->slib; | |
363 | ||
364 | irq_ptr->qdr->qdf0[i + nr].sla = | |
365 | (unsigned long)irq_ptr_qs[i]->sl; | |
366 | ||
367 | irq_ptr->qdr->qdf0[i + nr].slsba = | |
368 | (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; | |
369 | ||
d1bf8590 HC |
370 | irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; |
371 | irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; | |
372 | irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; | |
373 | irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; | |
779e6e1c JG |
374 | } |
375 | ||
376 | static void setup_qdr(struct qdio_irq *irq_ptr, | |
377 | struct qdio_initialize *qdio_init) | |
378 | { | |
379 | int i; | |
380 | ||
381 | irq_ptr->qdr->qfmt = qdio_init->q_format; | |
dfe5bb50 | 382 | irq_ptr->qdr->ac = qdio_init->qdr_ac; |
779e6e1c JG |
383 | irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs; |
384 | irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs; | |
385 | irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ | |
386 | irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; | |
387 | irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; | |
d1bf8590 | 388 | irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; |
779e6e1c JG |
389 | |
390 | for (i = 0; i < qdio_init->no_input_qs; i++) | |
391 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); | |
392 | ||
393 | for (i = 0; i < qdio_init->no_output_qs; i++) | |
394 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i, | |
395 | qdio_init->no_input_qs); | |
396 | } | |
397 | ||
398 | static void setup_qib(struct qdio_irq *irq_ptr, | |
399 | struct qdio_initialize *init_data) | |
400 | { | |
401 | if (qebsm_possible()) | |
402 | irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; | |
403 | ||
dcc18f48 CS |
404 | irq_ptr->qib.rflags |= init_data->qib_rflags; |
405 | ||
779e6e1c JG |
406 | irq_ptr->qib.qfmt = init_data->q_format; |
407 | if (init_data->no_input_qs) | |
408 | irq_ptr->qib.isliba = | |
409 | (unsigned long)(irq_ptr->input_qs[0]->slib); | |
410 | if (init_data->no_output_qs) | |
411 | irq_ptr->qib.osliba = | |
412 | (unsigned long)(irq_ptr->output_qs[0]->slib); | |
413 | memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); | |
414 | } | |
415 | ||
416 | int qdio_setup_irq(struct qdio_initialize *init_data) | |
417 | { | |
418 | struct ciw *ciw; | |
419 | struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; | |
420 | int rc; | |
421 | ||
432ac5e0 JG |
422 | memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); |
423 | memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); | |
424 | memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); | |
425 | memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); | |
426 | memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); | |
427 | ||
428 | irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL; | |
429 | irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0; | |
430 | ||
779e6e1c JG |
431 | /* wipes qib.ac, required by ar7063 */ |
432 | memset(irq_ptr->qdr, 0, sizeof(struct qdr)); | |
433 | ||
434 | irq_ptr->int_parm = init_data->int_parm; | |
435 | irq_ptr->nr_input_qs = init_data->no_input_qs; | |
436 | irq_ptr->nr_output_qs = init_data->no_output_qs; | |
437 | ||
438 | irq_ptr->schid = ccw_device_get_subchannel_id(init_data->cdev); | |
439 | irq_ptr->cdev = init_data->cdev; | |
440 | setup_queues(irq_ptr, init_data); | |
441 | ||
442 | setup_qib(irq_ptr, init_data); | |
443 | qdio_setup_thinint(irq_ptr); | |
444 | set_impl_params(irq_ptr, init_data->qib_param_field_format, | |
445 | init_data->qib_param_field, | |
446 | init_data->input_slib_elements, | |
447 | init_data->output_slib_elements); | |
448 | ||
449 | /* fill input and output descriptors */ | |
450 | setup_qdr(irq_ptr, init_data); | |
451 | ||
452 | /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ | |
453 | ||
454 | /* get qdio commands */ | |
455 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); | |
456 | if (!ciw) { | |
22f99347 | 457 | DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); |
779e6e1c JG |
458 | rc = -EINVAL; |
459 | goto out_err; | |
460 | } | |
461 | irq_ptr->equeue = *ciw; | |
462 | ||
463 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); | |
464 | if (!ciw) { | |
22f99347 | 465 | DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); |
779e6e1c JG |
466 | rc = -EINVAL; |
467 | goto out_err; | |
468 | } | |
469 | irq_ptr->aqueue = *ciw; | |
470 | ||
471 | /* set new interrupt handler */ | |
472 | irq_ptr->orig_handler = init_data->cdev->handler; | |
473 | init_data->cdev->handler = qdio_int_handler; | |
474 | return 0; | |
475 | out_err: | |
476 | qdio_release_memory(irq_ptr); | |
477 | return rc; | |
478 | } | |
479 | ||
480 | void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, | |
481 | struct ccw_device *cdev) | |
482 | { | |
483 | char s[80]; | |
484 | ||
22f99347 | 485 | snprintf(s, 80, "qdio: %s %s on SC %x using " |
90adac58 | 486 | "AI:%d QEBSM:%d PCI:%d TDD:%d SIGA:%s%s%s%s%s\n", |
22f99347 JG |
487 | dev_name(&cdev->dev), |
488 | (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" : | |
489 | ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"), | |
490 | irq_ptr->schid.sch_no, | |
491 | is_thinint_irq(irq_ptr), | |
492 | (irq_ptr->sch_token) ? 1 : 0, | |
493 | (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0, | |
494 | css_general_characteristics.aif_tdd, | |
495 | (irq_ptr->siga_flag.input) ? "R" : " ", | |
496 | (irq_ptr->siga_flag.output) ? "W" : " ", | |
497 | (irq_ptr->siga_flag.sync) ? "S" : " ", | |
90adac58 JG |
498 | (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ", |
499 | (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " "); | |
75f62761 | 500 | printk(KERN_INFO "%s", s); |
779e6e1c JG |
501 | } |
502 | ||
104ea556 | 503 | int qdio_enable_async_operation(struct qdio_output_q *outq) |
504 | { | |
505 | outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q, | |
506 | GFP_ATOMIC); | |
507 | if (!outq->aobs) { | |
508 | outq->use_cq = 0; | |
509 | return -ENOMEM; | |
510 | } | |
511 | outq->use_cq = 1; | |
512 | return 0; | |
513 | } | |
514 | ||
515 | void qdio_disable_async_operation(struct qdio_output_q *q) | |
516 | { | |
517 | kfree(q->aobs); | |
518 | q->aobs = NULL; | |
519 | q->use_cq = 0; | |
520 | } | |
521 | ||
779e6e1c JG |
522 | int __init qdio_setup_init(void) |
523 | { | |
104ea556 | 524 | int rc; |
525 | ||
779e6e1c JG |
526 | qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), |
527 | 256, 0, NULL); | |
528 | if (!qdio_q_cache) | |
529 | return -ENOMEM; | |
530 | ||
104ea556 | 531 | qdio_aob_cache = kmem_cache_create("qdio_aob", |
532 | sizeof(struct qaob), | |
533 | sizeof(struct qaob), | |
534 | 0, | |
535 | NULL); | |
536 | if (!qdio_aob_cache) { | |
537 | rc = -ENOMEM; | |
538 | goto free_qdio_q_cache; | |
539 | } | |
540 | ||
779e6e1c | 541 | /* Check for OSA/FCP thin interrupts (bit 67). */ |
22f99347 JG |
542 | DBF_EVENT("thinint:%1d", |
543 | (css_general_characteristics.aif_osa) ? 1 : 0); | |
779e6e1c JG |
544 | |
545 | /* Check for QEBSM support in general (bit 58). */ | |
22f99347 | 546 | DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); |
104ea556 | 547 | rc = 0; |
548 | out: | |
549 | return rc; | |
550 | free_qdio_q_cache: | |
551 | kmem_cache_destroy(qdio_q_cache); | |
552 | goto out; | |
779e6e1c JG |
553 | } |
554 | ||
3f1934bc | 555 | void qdio_setup_exit(void) |
779e6e1c | 556 | { |
104ea556 | 557 | kmem_cache_destroy(qdio_aob_cache); |
779e6e1c JG |
558 | kmem_cache_destroy(qdio_q_cache); |
559 | } |