Commit | Line | Data |
---|---|---|
779e6e1c | 1 | /* |
779e6e1c JG |
2 | * qdio queue initialization |
3 | * | |
a53c8fab | 4 | * Copyright IBM Corp. 2008 |
779e6e1c JG |
5 | * Author(s): Jan Glauber <jang@linux.vnet.ibm.com> |
6 | */ | |
7 | #include <linux/kernel.h> | |
8 | #include <linux/slab.h> | |
3a4c5d59 | 9 | #include <linux/export.h> |
779e6e1c JG |
10 | #include <asm/qdio.h> |
11 | ||
12 | #include "cio.h" | |
13 | #include "css.h" | |
14 | #include "device.h" | |
15 | #include "ioasm.h" | |
16 | #include "chsc.h" | |
17 | #include "qdio.h" | |
18 | #include "qdio_debug.h" | |
19 | ||
5245c924 SO |
20 | #define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) |
21 | ||
779e6e1c | 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 | 36 | |
5245c924 SO |
37 | /** |
38 | * qdio_free_buffers() - free qdio buffers | |
39 | * @buf: array of pointers to qdio buffers | |
40 | * @count: number of qdio buffers to free | |
41 | */ | |
42 | void qdio_free_buffers(struct qdio_buffer **buf, unsigned int count) | |
43 | { | |
44 | int pos; | |
45 | ||
46 | for (pos = 0; pos < count; pos += QBUFF_PER_PAGE) | |
47 | free_page((unsigned long) buf[pos]); | |
48 | } | |
49 | EXPORT_SYMBOL_GPL(qdio_free_buffers); | |
50 | ||
51 | /** | |
52 | * qdio_alloc_buffers() - allocate qdio buffers | |
53 | * @buf: array of pointers to qdio buffers | |
54 | * @count: number of qdio buffers to allocate | |
55 | */ | |
56 | int qdio_alloc_buffers(struct qdio_buffer **buf, unsigned int count) | |
57 | { | |
58 | int pos; | |
59 | ||
60 | for (pos = 0; pos < count; pos += QBUFF_PER_PAGE) { | |
61 | buf[pos] = (void *) get_zeroed_page(GFP_KERNEL); | |
62 | if (!buf[pos]) { | |
63 | qdio_free_buffers(buf, count); | |
64 | return -ENOMEM; | |
65 | } | |
66 | } | |
67 | for (pos = 0; pos < count; pos++) | |
68 | if (pos % QBUFF_PER_PAGE) | |
69 | buf[pos] = buf[pos - 1] + 1; | |
70 | return 0; | |
71 | } | |
72 | EXPORT_SYMBOL_GPL(qdio_alloc_buffers); | |
73 | ||
74 | /** | |
75 | * qdio_reset_buffers() - reset qdio buffers | |
76 | * @buf: array of pointers to qdio buffers | |
77 | * @count: number of qdio buffers that will be zeroed | |
78 | */ | |
79 | void qdio_reset_buffers(struct qdio_buffer **buf, unsigned int count) | |
80 | { | |
81 | int pos; | |
82 | ||
83 | for (pos = 0; pos < count; pos++) | |
84 | memset(buf[pos], 0, sizeof(struct qdio_buffer)); | |
85 | } | |
86 | EXPORT_SYMBOL_GPL(qdio_reset_buffers); | |
87 | ||
779e6e1c JG |
88 | /* |
89 | * qebsm is only available under 64bit but the adapter sets the feature | |
90 | * flag anyway, so we manually override it. | |
91 | */ | |
92 | static inline int qebsm_possible(void) | |
93 | { | |
779e6e1c | 94 | return css_general_characteristics.qebsm; |
779e6e1c JG |
95 | } |
96 | ||
97 | /* | |
98 | * qib_param_field: pointer to 128 bytes or NULL, if no param field | |
99 | * nr_input_qs: pointer to nr_queues*128 words of data or NULL | |
100 | */ | |
101 | static void set_impl_params(struct qdio_irq *irq_ptr, | |
102 | unsigned int qib_param_field_format, | |
103 | unsigned char *qib_param_field, | |
104 | unsigned long *input_slib_elements, | |
105 | unsigned long *output_slib_elements) | |
106 | { | |
107 | struct qdio_q *q; | |
108 | int i, j; | |
109 | ||
110 | if (!irq_ptr) | |
111 | return; | |
112 | ||
779e6e1c JG |
113 | irq_ptr->qib.pfmt = qib_param_field_format; |
114 | if (qib_param_field) | |
115 | memcpy(irq_ptr->qib.parm, qib_param_field, | |
116 | QDIO_MAX_BUFFERS_PER_Q); | |
117 | ||
118 | if (!input_slib_elements) | |
119 | goto output; | |
120 | ||
121 | for_each_input_queue(irq_ptr, q, i) { | |
122 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) | |
123 | q->slib->slibe[j].parms = | |
124 | input_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j]; | |
125 | } | |
126 | output: | |
127 | if (!output_slib_elements) | |
128 | return; | |
129 | ||
130 | for_each_output_queue(irq_ptr, q, i) { | |
131 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) | |
132 | q->slib->slibe[j].parms = | |
133 | output_slib_elements[i * QDIO_MAX_BUFFERS_PER_Q + j]; | |
134 | } | |
135 | } | |
136 | ||
137 | static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues) | |
138 | { | |
139 | struct qdio_q *q; | |
140 | int i; | |
141 | ||
142 | for (i = 0; i < nr_queues; i++) { | |
143 | q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL); | |
144 | if (!q) | |
145 | return -ENOMEM; | |
779e6e1c JG |
146 | |
147 | q->slib = (struct slib *) __get_free_page(GFP_KERNEL); | |
148 | if (!q->slib) { | |
149 | kmem_cache_free(qdio_q_cache, q); | |
150 | return -ENOMEM; | |
151 | } | |
779e6e1c JG |
152 | irq_ptr_qs[i] = q; |
153 | } | |
154 | return 0; | |
155 | } | |
156 | ||
157 | int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs) | |
158 | { | |
159 | int rc; | |
160 | ||
161 | rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs); | |
162 | if (rc) | |
163 | return rc; | |
164 | rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs); | |
165 | return rc; | |
166 | } | |
167 | ||
168 | static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr, | |
169 | qdio_handler_t *handler, int i) | |
170 | { | |
5382fe11 | 171 | struct slib *slib = q->slib; |
779e6e1c | 172 | |
5382fe11 JG |
173 | /* queue must be cleared for qdio_establish */ |
174 | memset(q, 0, sizeof(*q)); | |
175 | memset(slib, 0, PAGE_SIZE); | |
176 | q->slib = slib; | |
779e6e1c JG |
177 | q->irq_ptr = irq_ptr; |
178 | q->mask = 1 << (31 - i); | |
179 | q->nr = i; | |
180 | q->handler = handler; | |
181 | } | |
182 | ||
183 | static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, | |
22f99347 | 184 | void **sbals_array, int i) |
779e6e1c JG |
185 | { |
186 | struct qdio_q *prev; | |
187 | int j; | |
188 | ||
22f99347 | 189 | DBF_HEX(&q, sizeof(void *)); |
779e6e1c JG |
190 | q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2); |
191 | ||
192 | /* fill in sbal */ | |
ce1d8014 | 193 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) |
779e6e1c | 194 | q->sbal[j] = *sbals_array++; |
779e6e1c JG |
195 | |
196 | /* fill in slib */ | |
197 | if (i > 0) { | |
198 | prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1] | |
199 | : irq_ptr->output_qs[i - 1]; | |
200 | prev->slib->nsliba = (unsigned long)q->slib; | |
201 | } | |
202 | ||
203 | q->slib->sla = (unsigned long)q->sl; | |
204 | q->slib->slsba = (unsigned long)&q->slsb.val[0]; | |
205 | ||
206 | /* fill in sl */ | |
207 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) | |
208 | q->sl->element[j].sbal = (unsigned long)q->sbal[j]; | |
779e6e1c JG |
209 | } |
210 | ||
211 | static void setup_queues(struct qdio_irq *irq_ptr, | |
212 | struct qdio_initialize *qdio_init) | |
213 | { | |
779e6e1c JG |
214 | struct qdio_q *q; |
215 | void **input_sbal_array = qdio_init->input_sbal_addr_array; | |
216 | void **output_sbal_array = qdio_init->output_sbal_addr_array; | |
104ea556 | 217 | struct qdio_outbuf_state *output_sbal_state_array = |
218 | qdio_init->output_sbal_state_array; | |
779e6e1c JG |
219 | int i; |
220 | ||
779e6e1c | 221 | for_each_input_queue(irq_ptr, q, i) { |
104ea556 | 222 | DBF_EVENT("inq:%1d", i); |
779e6e1c JG |
223 | setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); |
224 | ||
225 | q->is_input_q = 1; | |
e58b0d90 SM |
226 | q->u.in.queue_start_poll = qdio_init->queue_start_poll_array ? |
227 | qdio_init->queue_start_poll_array[i] : NULL; | |
104ea556 | 228 | |
22f99347 | 229 | setup_storage_lists(q, irq_ptr, input_sbal_array, i); |
779e6e1c JG |
230 | input_sbal_array += QDIO_MAX_BUFFERS_PER_Q; |
231 | ||
104ea556 | 232 | if (is_thinint_irq(irq_ptr)) { |
779e6e1c JG |
233 | tasklet_init(&q->tasklet, tiqdio_inbound_processing, |
234 | (unsigned long) q); | |
104ea556 | 235 | } else { |
779e6e1c JG |
236 | tasklet_init(&q->tasklet, qdio_inbound_processing, |
237 | (unsigned long) q); | |
104ea556 | 238 | } |
779e6e1c JG |
239 | } |
240 | ||
241 | for_each_output_queue(irq_ptr, q, i) { | |
22f99347 | 242 | DBF_EVENT("outq:%1d", i); |
779e6e1c JG |
243 | setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); |
244 | ||
104ea556 | 245 | q->u.out.sbal_state = output_sbal_state_array; |
246 | output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q; | |
247 | ||
779e6e1c | 248 | q->is_input_q = 0; |
3d6c76ff | 249 | q->u.out.scan_threshold = qdio_init->scan_threshold; |
22f99347 | 250 | setup_storage_lists(q, irq_ptr, output_sbal_array, i); |
779e6e1c JG |
251 | output_sbal_array += QDIO_MAX_BUFFERS_PER_Q; |
252 | ||
253 | tasklet_init(&q->tasklet, qdio_outbound_processing, | |
254 | (unsigned long) q); | |
255 | setup_timer(&q->u.out.timer, (void(*)(unsigned long)) | |
256 | &qdio_outbound_timer, (unsigned long)q); | |
257 | } | |
258 | } | |
259 | ||
260 | static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) | |
261 | { | |
262 | if (qdioac & AC1_SIGA_INPUT_NEEDED) | |
263 | irq_ptr->siga_flag.input = 1; | |
264 | if (qdioac & AC1_SIGA_OUTPUT_NEEDED) | |
265 | irq_ptr->siga_flag.output = 1; | |
266 | if (qdioac & AC1_SIGA_SYNC_NEEDED) | |
267 | irq_ptr->siga_flag.sync = 1; | |
90adac58 JG |
268 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)) |
269 | irq_ptr->siga_flag.sync_after_ai = 1; | |
270 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)) | |
271 | irq_ptr->siga_flag.sync_out_after_pci = 1; | |
779e6e1c JG |
272 | } |
273 | ||
274 | static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, | |
275 | unsigned char qdioac, unsigned long token) | |
276 | { | |
779e6e1c JG |
277 | if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) |
278 | goto no_qebsm; | |
279 | if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || | |
280 | (!(qdioac & AC1_SC_QEBSM_ENABLED))) | |
281 | goto no_qebsm; | |
282 | ||
283 | irq_ptr->sch_token = token; | |
284 | ||
22f99347 JG |
285 | DBF_EVENT("V=V:1"); |
286 | DBF_EVENT("%8lx", irq_ptr->sch_token); | |
779e6e1c JG |
287 | return; |
288 | ||
289 | no_qebsm: | |
290 | irq_ptr->sch_token = 0; | |
291 | irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; | |
22f99347 | 292 | DBF_EVENT("noV=V"); |
779e6e1c JG |
293 | } |
294 | ||
bbd50e17 JG |
295 | /* |
296 | * If there is a qdio_irq we use the chsc_page and store the information | |
297 | * in the qdio_irq, otherwise we copy it to the specified structure. | |
298 | */ | |
299 | int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, | |
300 | struct subchannel_id *schid, | |
301 | struct qdio_ssqd_desc *data) | |
779e6e1c JG |
302 | { |
303 | struct chsc_ssqd_area *ssqd; | |
304 | int rc; | |
305 | ||
22f99347 | 306 | DBF_EVENT("getssqd:%4x", schid->sch_no); |
da5b6cb1 | 307 | if (!irq_ptr) { |
bbd50e17 | 308 | ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL); |
da5b6cb1 SO |
309 | if (!ssqd) |
310 | return -ENOMEM; | |
311 | } else { | |
312 | ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; | |
313 | } | |
314 | ||
315 | rc = chsc_ssqd(*schid, ssqd); | |
779e6e1c | 316 | if (rc) |
da5b6cb1 | 317 | goto out; |
779e6e1c JG |
318 | |
319 | if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || | |
320 | !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || | |
bbd50e17 | 321 | (ssqd->qdio_ssqd.sch != schid->sch_no)) |
da5b6cb1 SO |
322 | rc = -EINVAL; |
323 | ||
324 | if (!rc) | |
325 | memcpy(data, &ssqd->qdio_ssqd, sizeof(*data)); | |
326 | ||
327 | out: | |
328 | if (!irq_ptr) | |
bbd50e17 | 329 | free_page((unsigned long)ssqd); |
da5b6cb1 SO |
330 | |
331 | return rc; | |
779e6e1c JG |
332 | } |
333 | ||
334 | void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) | |
335 | { | |
336 | unsigned char qdioac; | |
779e6e1c JG |
337 | int rc; |
338 | ||
da5b6cb1 | 339 | rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, &irq_ptr->ssqd_desc); |
779e6e1c | 340 | if (rc) { |
22f99347 JG |
341 | DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no); |
342 | DBF_ERROR("rc:%x", rc); | |
779e6e1c JG |
343 | /* all flags set, worst case */ |
344 | qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | | |
345 | AC1_SIGA_SYNC_NEEDED; | |
346 | } else | |
347 | qdioac = irq_ptr->ssqd_desc.qdioac1; | |
348 | ||
349 | check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); | |
350 | process_ac_flags(irq_ptr, qdioac); | |
61d84979 JG |
351 | DBF_EVENT("ac 1:%2x 2:%4x", qdioac, irq_ptr->ssqd_desc.qdioac2); |
352 | DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac); | |
779e6e1c JG |
353 | } |
354 | ||
355 | void qdio_release_memory(struct qdio_irq *irq_ptr) | |
356 | { | |
357 | struct qdio_q *q; | |
358 | int i; | |
359 | ||
360 | /* | |
361 | * Must check queue array manually since irq_ptr->nr_input_queues / | |
362 | * irq_ptr->nr_input_queues may not yet be set. | |
363 | */ | |
364 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
365 | q = irq_ptr->input_qs[i]; | |
366 | if (q) { | |
367 | free_page((unsigned long) q->slib); | |
368 | kmem_cache_free(qdio_q_cache, q); | |
369 | } | |
370 | } | |
371 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
372 | q = irq_ptr->output_qs[i]; | |
373 | if (q) { | |
104ea556 | 374 | if (q->u.out.use_cq) { |
375 | int n; | |
376 | ||
377 | for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) { | |
378 | struct qaob *aob = q->u.out.aobs[n]; | |
379 | if (aob) { | |
380 | qdio_release_aob(aob); | |
381 | q->u.out.aobs[n] = NULL; | |
382 | } | |
383 | } | |
384 | ||
385 | qdio_disable_async_operation(&q->u.out); | |
386 | } | |
779e6e1c JG |
387 | free_page((unsigned long) q->slib); |
388 | kmem_cache_free(qdio_q_cache, q); | |
389 | } | |
390 | } | |
3b8e3004 | 391 | free_page((unsigned long) irq_ptr->qdr); |
779e6e1c JG |
392 | free_page(irq_ptr->chsc_page); |
393 | free_page((unsigned long) irq_ptr); | |
394 | } | |
395 | ||
396 | static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, | |
397 | struct qdio_q **irq_ptr_qs, | |
398 | int i, int nr) | |
399 | { | |
400 | irq_ptr->qdr->qdf0[i + nr].sliba = | |
401 | (unsigned long)irq_ptr_qs[i]->slib; | |
402 | ||
403 | irq_ptr->qdr->qdf0[i + nr].sla = | |
404 | (unsigned long)irq_ptr_qs[i]->sl; | |
405 | ||
406 | irq_ptr->qdr->qdf0[i + nr].slsba = | |
407 | (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; | |
408 | ||
d1bf8590 HC |
409 | irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; |
410 | irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; | |
411 | irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; | |
412 | irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; | |
779e6e1c JG |
413 | } |
414 | ||
415 | static void setup_qdr(struct qdio_irq *irq_ptr, | |
416 | struct qdio_initialize *qdio_init) | |
417 | { | |
418 | int i; | |
419 | ||
420 | irq_ptr->qdr->qfmt = qdio_init->q_format; | |
dfe5bb50 | 421 | irq_ptr->qdr->ac = qdio_init->qdr_ac; |
779e6e1c JG |
422 | irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs; |
423 | irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs; | |
424 | irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ | |
425 | irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; | |
426 | irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; | |
d1bf8590 | 427 | irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; |
779e6e1c JG |
428 | |
429 | for (i = 0; i < qdio_init->no_input_qs; i++) | |
430 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); | |
431 | ||
432 | for (i = 0; i < qdio_init->no_output_qs; i++) | |
433 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i, | |
434 | qdio_init->no_input_qs); | |
435 | } | |
436 | ||
437 | static void setup_qib(struct qdio_irq *irq_ptr, | |
438 | struct qdio_initialize *init_data) | |
439 | { | |
440 | if (qebsm_possible()) | |
441 | irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; | |
442 | ||
dcc18f48 CS |
443 | irq_ptr->qib.rflags |= init_data->qib_rflags; |
444 | ||
779e6e1c JG |
445 | irq_ptr->qib.qfmt = init_data->q_format; |
446 | if (init_data->no_input_qs) | |
447 | irq_ptr->qib.isliba = | |
448 | (unsigned long)(irq_ptr->input_qs[0]->slib); | |
449 | if (init_data->no_output_qs) | |
450 | irq_ptr->qib.osliba = | |
451 | (unsigned long)(irq_ptr->output_qs[0]->slib); | |
452 | memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); | |
453 | } | |
454 | ||
455 | int qdio_setup_irq(struct qdio_initialize *init_data) | |
456 | { | |
457 | struct ciw *ciw; | |
458 | struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; | |
459 | int rc; | |
460 | ||
432ac5e0 JG |
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 | ||
779e6e1c JG |
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; | |
779e6e1c | 476 | irq_ptr->cdev = init_data->cdev; |
287a0933 | 477 | ccw_device_get_schid(irq_ptr->cdev, &irq_ptr->schid); |
779e6e1c JG |
478 | setup_queues(irq_ptr, init_data); |
479 | ||
480 | setup_qib(irq_ptr, init_data); | |
481 | qdio_setup_thinint(irq_ptr); | |
482 | set_impl_params(irq_ptr, init_data->qib_param_field_format, | |
483 | init_data->qib_param_field, | |
484 | init_data->input_slib_elements, | |
485 | init_data->output_slib_elements); | |
486 | ||
487 | /* fill input and output descriptors */ | |
488 | setup_qdr(irq_ptr, init_data); | |
489 | ||
490 | /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ | |
491 | ||
492 | /* get qdio commands */ | |
493 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); | |
494 | if (!ciw) { | |
22f99347 | 495 | DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); |
779e6e1c JG |
496 | rc = -EINVAL; |
497 | goto out_err; | |
498 | } | |
499 | irq_ptr->equeue = *ciw; | |
500 | ||
501 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); | |
502 | if (!ciw) { | |
22f99347 | 503 | DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); |
779e6e1c JG |
504 | rc = -EINVAL; |
505 | goto out_err; | |
506 | } | |
507 | irq_ptr->aqueue = *ciw; | |
508 | ||
509 | /* set new interrupt handler */ | |
510 | irq_ptr->orig_handler = init_data->cdev->handler; | |
511 | init_data->cdev->handler = qdio_int_handler; | |
512 | return 0; | |
513 | out_err: | |
514 | qdio_release_memory(irq_ptr); | |
515 | return rc; | |
516 | } | |
517 | ||
518 | void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, | |
519 | struct ccw_device *cdev) | |
520 | { | |
521 | char s[80]; | |
522 | ||
22f99347 | 523 | snprintf(s, 80, "qdio: %s %s on SC %x using " |
6726a807 | 524 | "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n", |
22f99347 JG |
525 | dev_name(&cdev->dev), |
526 | (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" : | |
527 | ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"), | |
528 | irq_ptr->schid.sch_no, | |
529 | is_thinint_irq(irq_ptr), | |
530 | (irq_ptr->sch_token) ? 1 : 0, | |
531 | (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0, | |
532 | css_general_characteristics.aif_tdd, | |
533 | (irq_ptr->siga_flag.input) ? "R" : " ", | |
534 | (irq_ptr->siga_flag.output) ? "W" : " ", | |
535 | (irq_ptr->siga_flag.sync) ? "S" : " ", | |
90adac58 JG |
536 | (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ", |
537 | (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " "); | |
75f62761 | 538 | printk(KERN_INFO "%s", s); |
779e6e1c JG |
539 | } |
540 | ||
104ea556 | 541 | int qdio_enable_async_operation(struct qdio_output_q *outq) |
542 | { | |
543 | outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q, | |
544 | GFP_ATOMIC); | |
545 | if (!outq->aobs) { | |
546 | outq->use_cq = 0; | |
547 | return -ENOMEM; | |
548 | } | |
549 | outq->use_cq = 1; | |
550 | return 0; | |
551 | } | |
552 | ||
553 | void qdio_disable_async_operation(struct qdio_output_q *q) | |
554 | { | |
555 | kfree(q->aobs); | |
556 | q->aobs = NULL; | |
557 | q->use_cq = 0; | |
558 | } | |
559 | ||
779e6e1c JG |
560 | int __init qdio_setup_init(void) |
561 | { | |
104ea556 | 562 | int rc; |
563 | ||
779e6e1c JG |
564 | qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), |
565 | 256, 0, NULL); | |
566 | if (!qdio_q_cache) | |
567 | return -ENOMEM; | |
568 | ||
104ea556 | 569 | qdio_aob_cache = kmem_cache_create("qdio_aob", |
570 | sizeof(struct qaob), | |
571 | sizeof(struct qaob), | |
572 | 0, | |
573 | NULL); | |
574 | if (!qdio_aob_cache) { | |
575 | rc = -ENOMEM; | |
576 | goto free_qdio_q_cache; | |
577 | } | |
578 | ||
779e6e1c | 579 | /* Check for OSA/FCP thin interrupts (bit 67). */ |
22f99347 JG |
580 | DBF_EVENT("thinint:%1d", |
581 | (css_general_characteristics.aif_osa) ? 1 : 0); | |
779e6e1c JG |
582 | |
583 | /* Check for QEBSM support in general (bit 58). */ | |
22f99347 | 584 | DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); |
104ea556 | 585 | rc = 0; |
586 | out: | |
587 | return rc; | |
588 | free_qdio_q_cache: | |
589 | kmem_cache_destroy(qdio_q_cache); | |
590 | goto out; | |
779e6e1c JG |
591 | } |
592 | ||
3f1934bc | 593 | void qdio_setup_exit(void) |
779e6e1c | 594 | { |
104ea556 | 595 | kmem_cache_destroy(qdio_aob_cache); |
779e6e1c JG |
596 | kmem_cache_destroy(qdio_q_cache); |
597 | } |