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724117b7 | 1 | // SPDX-License-Identifier: GPL-2.0 |
779e6e1c | 2 | /* |
779e6e1c JG |
3 | * qdio queue initialization |
4 | * | |
a53c8fab | 5 | * Copyright IBM Corp. 2008 |
779e6e1c JG |
6 | * Author(s): Jan Glauber <jang@linux.vnet.ibm.com> |
7 | */ | |
8 | #include <linux/kernel.h> | |
9 | #include <linux/slab.h> | |
3a4c5d59 | 10 | #include <linux/export.h> |
e9091ffd | 11 | #include <linux/io.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 | ||
5245c924 SO |
22 | #define QBUFF_PER_PAGE (PAGE_SIZE / sizeof(struct qdio_buffer)) |
23 | ||
779e6e1c | 24 | static struct kmem_cache *qdio_q_cache; |
104ea556 | 25 | static struct kmem_cache *qdio_aob_cache; |
26 | ||
400d8291 | 27 | struct qaob *qdio_allocate_aob(void) |
104ea556 | 28 | { |
400d8291 | 29 | return kmem_cache_zalloc(qdio_aob_cache, GFP_ATOMIC); |
104ea556 | 30 | } |
104ea556 | 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); | |
779e6e1c | 37 | |
5245c924 SO |
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 | ||
779e6e1c JG |
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 | { | |
779e6e1c | 95 | return css_general_characteristics.qebsm; |
779e6e1c JG |
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 | ||
779e6e1c JG |
114 | irq_ptr->qib.pfmt = qib_param_field_format; |
115 | if (qib_param_field) | |
116 | memcpy(irq_ptr->qib.parm, qib_param_field, | |
9f494438 | 117 | sizeof(irq_ptr->qib.parm)); |
779e6e1c JG |
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++) { | |
e5218134 | 144 | q = kmem_cache_zalloc(qdio_q_cache, GFP_KERNEL); |
779e6e1c JG |
145 | if (!q) |
146 | return -ENOMEM; | |
779e6e1c JG |
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 | } | |
779e6e1c JG |
153 | irq_ptr_qs[i] = q; |
154 | } | |
155 | return 0; | |
156 | } | |
157 | ||
158 | int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs, int nr_output_qs) | |
159 | { | |
160 | int rc; | |
161 | ||
162 | rc = __qdio_allocate_qs(irq_ptr->input_qs, nr_input_qs); | |
163 | if (rc) | |
164 | return rc; | |
165 | rc = __qdio_allocate_qs(irq_ptr->output_qs, nr_output_qs); | |
166 | return rc; | |
167 | } | |
168 | ||
169 | static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr, | |
170 | qdio_handler_t *handler, int i) | |
171 | { | |
5382fe11 | 172 | struct slib *slib = q->slib; |
779e6e1c | 173 | |
5382fe11 JG |
174 | /* queue must be cleared for qdio_establish */ |
175 | memset(q, 0, sizeof(*q)); | |
176 | memset(slib, 0, PAGE_SIZE); | |
177 | q->slib = slib; | |
779e6e1c JG |
178 | q->irq_ptr = irq_ptr; |
179 | q->mask = 1 << (31 - i); | |
180 | q->nr = i; | |
181 | q->handler = handler; | |
182 | } | |
183 | ||
184 | static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr, | |
bdf11767 | 185 | struct qdio_buffer **sbals_array, int i) |
779e6e1c JG |
186 | { |
187 | struct qdio_q *prev; | |
188 | int j; | |
189 | ||
22f99347 | 190 | DBF_HEX(&q, sizeof(void *)); |
779e6e1c JG |
191 | q->sl = (struct sl *)((char *)q->slib + PAGE_SIZE / 2); |
192 | ||
193 | /* fill in sbal */ | |
ce1d8014 | 194 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) |
779e6e1c | 195 | q->sbal[j] = *sbals_array++; |
779e6e1c JG |
196 | |
197 | /* fill in slib */ | |
198 | if (i > 0) { | |
199 | prev = (q->is_input_q) ? irq_ptr->input_qs[i - 1] | |
200 | : irq_ptr->output_qs[i - 1]; | |
201 | prev->slib->nsliba = (unsigned long)q->slib; | |
202 | } | |
203 | ||
204 | q->slib->sla = (unsigned long)q->sl; | |
205 | q->slib->slsba = (unsigned long)&q->slsb.val[0]; | |
206 | ||
207 | /* fill in sl */ | |
208 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) | |
e9091ffd | 209 | q->sl->element[j].sbal = virt_to_phys(q->sbal[j]); |
779e6e1c JG |
210 | } |
211 | ||
212 | static void setup_queues(struct qdio_irq *irq_ptr, | |
213 | struct qdio_initialize *qdio_init) | |
214 | { | |
779e6e1c | 215 | struct qdio_q *q; |
104ea556 | 216 | struct qdio_outbuf_state *output_sbal_state_array = |
217 | qdio_init->output_sbal_state_array; | |
779e6e1c JG |
218 | int i; |
219 | ||
779e6e1c | 220 | for_each_input_queue(irq_ptr, q, i) { |
104ea556 | 221 | DBF_EVENT("inq:%1d", i); |
779e6e1c JG |
222 | setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); |
223 | ||
224 | q->is_input_q = 1; | |
104ea556 | 225 | |
d8564e19 JW |
226 | setup_storage_lists(q, irq_ptr, |
227 | qdio_init->input_sbal_addr_array[i], i); | |
779e6e1c | 228 | |
104ea556 | 229 | if (is_thinint_irq(irq_ptr)) { |
779e6e1c JG |
230 | tasklet_init(&q->tasklet, tiqdio_inbound_processing, |
231 | (unsigned long) q); | |
104ea556 | 232 | } else { |
779e6e1c JG |
233 | tasklet_init(&q->tasklet, qdio_inbound_processing, |
234 | (unsigned long) q); | |
104ea556 | 235 | } |
779e6e1c JG |
236 | } |
237 | ||
238 | for_each_output_queue(irq_ptr, q, i) { | |
22f99347 | 239 | DBF_EVENT("outq:%1d", i); |
779e6e1c JG |
240 | setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); |
241 | ||
104ea556 | 242 | q->u.out.sbal_state = output_sbal_state_array; |
243 | output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q; | |
244 | ||
779e6e1c | 245 | q->is_input_q = 0; |
d8564e19 JW |
246 | setup_storage_lists(q, irq_ptr, |
247 | qdio_init->output_sbal_addr_array[i], i); | |
779e6e1c JG |
248 | |
249 | tasklet_init(&q->tasklet, qdio_outbound_processing, | |
250 | (unsigned long) q); | |
cb9f780a | 251 | timer_setup(&q->u.out.timer, qdio_outbound_timer, 0); |
779e6e1c JG |
252 | } |
253 | } | |
254 | ||
255 | static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) | |
256 | { | |
257 | if (qdioac & AC1_SIGA_INPUT_NEEDED) | |
258 | irq_ptr->siga_flag.input = 1; | |
259 | if (qdioac & AC1_SIGA_OUTPUT_NEEDED) | |
260 | irq_ptr->siga_flag.output = 1; | |
261 | if (qdioac & AC1_SIGA_SYNC_NEEDED) | |
262 | irq_ptr->siga_flag.sync = 1; | |
90adac58 JG |
263 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)) |
264 | irq_ptr->siga_flag.sync_after_ai = 1; | |
265 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)) | |
266 | irq_ptr->siga_flag.sync_out_after_pci = 1; | |
779e6e1c JG |
267 | } |
268 | ||
269 | static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, | |
270 | unsigned char qdioac, unsigned long token) | |
271 | { | |
779e6e1c JG |
272 | if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) |
273 | goto no_qebsm; | |
274 | if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || | |
275 | (!(qdioac & AC1_SC_QEBSM_ENABLED))) | |
276 | goto no_qebsm; | |
277 | ||
278 | irq_ptr->sch_token = token; | |
279 | ||
22f99347 JG |
280 | DBF_EVENT("V=V:1"); |
281 | DBF_EVENT("%8lx", irq_ptr->sch_token); | |
779e6e1c JG |
282 | return; |
283 | ||
284 | no_qebsm: | |
285 | irq_ptr->sch_token = 0; | |
286 | irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; | |
22f99347 | 287 | DBF_EVENT("noV=V"); |
779e6e1c JG |
288 | } |
289 | ||
bbd50e17 JG |
290 | /* |
291 | * If there is a qdio_irq we use the chsc_page and store the information | |
292 | * in the qdio_irq, otherwise we copy it to the specified structure. | |
293 | */ | |
294 | int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, | |
295 | struct subchannel_id *schid, | |
296 | struct qdio_ssqd_desc *data) | |
779e6e1c JG |
297 | { |
298 | struct chsc_ssqd_area *ssqd; | |
299 | int rc; | |
300 | ||
22f99347 | 301 | DBF_EVENT("getssqd:%4x", schid->sch_no); |
da5b6cb1 | 302 | if (!irq_ptr) { |
bbd50e17 | 303 | ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL); |
da5b6cb1 SO |
304 | if (!ssqd) |
305 | return -ENOMEM; | |
306 | } else { | |
307 | ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; | |
308 | } | |
309 | ||
310 | rc = chsc_ssqd(*schid, ssqd); | |
779e6e1c | 311 | if (rc) |
da5b6cb1 | 312 | goto out; |
779e6e1c JG |
313 | |
314 | if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || | |
315 | !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || | |
bbd50e17 | 316 | (ssqd->qdio_ssqd.sch != schid->sch_no)) |
da5b6cb1 SO |
317 | rc = -EINVAL; |
318 | ||
319 | if (!rc) | |
320 | memcpy(data, &ssqd->qdio_ssqd, sizeof(*data)); | |
321 | ||
322 | out: | |
323 | if (!irq_ptr) | |
bbd50e17 | 324 | free_page((unsigned long)ssqd); |
da5b6cb1 SO |
325 | |
326 | return rc; | |
779e6e1c JG |
327 | } |
328 | ||
329 | void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) | |
330 | { | |
331 | unsigned char qdioac; | |
779e6e1c JG |
332 | int rc; |
333 | ||
da5b6cb1 | 334 | rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, &irq_ptr->ssqd_desc); |
779e6e1c | 335 | if (rc) { |
22f99347 JG |
336 | DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no); |
337 | DBF_ERROR("rc:%x", rc); | |
779e6e1c JG |
338 | /* all flags set, worst case */ |
339 | qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | | |
340 | AC1_SIGA_SYNC_NEEDED; | |
341 | } else | |
342 | qdioac = irq_ptr->ssqd_desc.qdioac1; | |
343 | ||
344 | check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); | |
345 | process_ac_flags(irq_ptr, qdioac); | |
61d84979 JG |
346 | DBF_EVENT("ac 1:%2x 2:%4x", qdioac, irq_ptr->ssqd_desc.qdioac2); |
347 | DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac); | |
779e6e1c JG |
348 | } |
349 | ||
350 | void qdio_release_memory(struct qdio_irq *irq_ptr) | |
351 | { | |
352 | struct qdio_q *q; | |
353 | int i; | |
354 | ||
355 | /* | |
356 | * Must check queue array manually since irq_ptr->nr_input_queues / | |
357 | * irq_ptr->nr_input_queues may not yet be set. | |
358 | */ | |
359 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
360 | q = irq_ptr->input_qs[i]; | |
361 | if (q) { | |
362 | free_page((unsigned long) q->slib); | |
363 | kmem_cache_free(qdio_q_cache, q); | |
364 | } | |
365 | } | |
366 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
367 | q = irq_ptr->output_qs[i]; | |
368 | if (q) { | |
104ea556 | 369 | if (q->u.out.use_cq) { |
370 | int n; | |
371 | ||
372 | for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) { | |
373 | struct qaob *aob = q->u.out.aobs[n]; | |
374 | if (aob) { | |
375 | qdio_release_aob(aob); | |
376 | q->u.out.aobs[n] = NULL; | |
377 | } | |
378 | } | |
379 | ||
380 | qdio_disable_async_operation(&q->u.out); | |
381 | } | |
779e6e1c JG |
382 | free_page((unsigned long) q->slib); |
383 | kmem_cache_free(qdio_q_cache, q); | |
384 | } | |
385 | } | |
3b8e3004 | 386 | free_page((unsigned long) irq_ptr->qdr); |
779e6e1c JG |
387 | free_page(irq_ptr->chsc_page); |
388 | free_page((unsigned long) irq_ptr); | |
389 | } | |
390 | ||
391 | static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, | |
392 | struct qdio_q **irq_ptr_qs, | |
393 | int i, int nr) | |
394 | { | |
395 | irq_ptr->qdr->qdf0[i + nr].sliba = | |
396 | (unsigned long)irq_ptr_qs[i]->slib; | |
397 | ||
398 | irq_ptr->qdr->qdf0[i + nr].sla = | |
399 | (unsigned long)irq_ptr_qs[i]->sl; | |
400 | ||
401 | irq_ptr->qdr->qdf0[i + nr].slsba = | |
402 | (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; | |
403 | ||
d1bf8590 HC |
404 | irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; |
405 | irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; | |
406 | irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; | |
407 | irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; | |
779e6e1c JG |
408 | } |
409 | ||
410 | static void setup_qdr(struct qdio_irq *irq_ptr, | |
411 | struct qdio_initialize *qdio_init) | |
412 | { | |
413 | int i; | |
414 | ||
415 | irq_ptr->qdr->qfmt = qdio_init->q_format; | |
dfe5bb50 | 416 | irq_ptr->qdr->ac = qdio_init->qdr_ac; |
779e6e1c JG |
417 | irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs; |
418 | irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs; | |
419 | irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ | |
420 | irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; | |
421 | irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; | |
d1bf8590 | 422 | irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; |
779e6e1c JG |
423 | |
424 | for (i = 0; i < qdio_init->no_input_qs; i++) | |
425 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); | |
426 | ||
427 | for (i = 0; i < qdio_init->no_output_qs; i++) | |
428 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i, | |
429 | qdio_init->no_input_qs); | |
430 | } | |
431 | ||
432 | static void setup_qib(struct qdio_irq *irq_ptr, | |
433 | struct qdio_initialize *init_data) | |
434 | { | |
435 | if (qebsm_possible()) | |
436 | irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; | |
437 | ||
dcc18f48 CS |
438 | irq_ptr->qib.rflags |= init_data->qib_rflags; |
439 | ||
779e6e1c JG |
440 | irq_ptr->qib.qfmt = init_data->q_format; |
441 | if (init_data->no_input_qs) | |
442 | irq_ptr->qib.isliba = | |
443 | (unsigned long)(irq_ptr->input_qs[0]->slib); | |
444 | if (init_data->no_output_qs) | |
445 | irq_ptr->qib.osliba = | |
446 | (unsigned long)(irq_ptr->output_qs[0]->slib); | |
447 | memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); | |
448 | } | |
449 | ||
014816b6 | 450 | int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data) |
779e6e1c | 451 | { |
b2745655 | 452 | struct ccw_device *cdev = irq_ptr->cdev; |
779e6e1c | 453 | struct ciw *ciw; |
779e6e1c | 454 | |
432ac5e0 JG |
455 | memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); |
456 | memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); | |
457 | memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); | |
458 | memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); | |
459 | memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); | |
460 | ||
d5d006fa | 461 | irq_ptr->debugfs_dev = NULL; |
6e2a7b51 JW |
462 | irq_ptr->sch_token = irq_ptr->perf_stat_enabled = 0; |
463 | irq_ptr->state = QDIO_IRQ_STATE_INACTIVE; | |
432ac5e0 | 464 | |
779e6e1c JG |
465 | /* wipes qib.ac, required by ar7063 */ |
466 | memset(irq_ptr->qdr, 0, sizeof(struct qdr)); | |
467 | ||
468 | irq_ptr->int_parm = init_data->int_parm; | |
469 | irq_ptr->nr_input_qs = init_data->no_input_qs; | |
470 | irq_ptr->nr_output_qs = init_data->no_output_qs; | |
313dc689 | 471 | irq_ptr->scan_threshold = init_data->scan_threshold; |
dd62abd2 | 472 | ccw_device_get_schid(cdev, &irq_ptr->schid); |
779e6e1c JG |
473 | setup_queues(irq_ptr, init_data); |
474 | ||
0a6e6345 JW |
475 | if (init_data->irq_poll) { |
476 | irq_ptr->irq_poll = init_data->irq_poll; | |
477 | set_bit(QDIO_IRQ_DISABLED, &irq_ptr->poll_state); | |
478 | } else { | |
479 | irq_ptr->irq_poll = NULL; | |
480 | } | |
481 | ||
779e6e1c JG |
482 | setup_qib(irq_ptr, init_data); |
483 | qdio_setup_thinint(irq_ptr); | |
484 | set_impl_params(irq_ptr, init_data->qib_param_field_format, | |
485 | init_data->qib_param_field, | |
486 | init_data->input_slib_elements, | |
487 | init_data->output_slib_elements); | |
488 | ||
489 | /* fill input and output descriptors */ | |
490 | setup_qdr(irq_ptr, init_data); | |
491 | ||
492 | /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ | |
493 | ||
494 | /* get qdio commands */ | |
dd62abd2 | 495 | ciw = ccw_device_get_ciw(cdev, CIW_TYPE_EQUEUE); |
779e6e1c | 496 | if (!ciw) { |
22f99347 | 497 | DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); |
2e68adcd | 498 | return -EINVAL; |
779e6e1c JG |
499 | } |
500 | irq_ptr->equeue = *ciw; | |
501 | ||
dd62abd2 | 502 | ciw = ccw_device_get_ciw(cdev, CIW_TYPE_AQUEUE); |
779e6e1c | 503 | if (!ciw) { |
22f99347 | 504 | DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); |
2e68adcd | 505 | return -EINVAL; |
779e6e1c JG |
506 | } |
507 | irq_ptr->aqueue = *ciw; | |
508 | ||
509 | /* set new interrupt handler */ | |
dd62abd2 JW |
510 | spin_lock_irq(get_ccwdev_lock(cdev)); |
511 | irq_ptr->orig_handler = cdev->handler; | |
512 | cdev->handler = qdio_int_handler; | |
513 | spin_unlock_irq(get_ccwdev_lock(cdev)); | |
779e6e1c | 514 | return 0; |
779e6e1c JG |
515 | } |
516 | ||
b2745655 | 517 | void qdio_print_subchannel_info(struct qdio_irq *irq_ptr) |
779e6e1c JG |
518 | { |
519 | char s[80]; | |
520 | ||
22f99347 | 521 | snprintf(s, 80, "qdio: %s %s on SC %x using " |
6726a807 | 522 | "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n", |
b2745655 | 523 | dev_name(&irq_ptr->cdev->dev), |
22f99347 JG |
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, | |
f85b2b29 | 529 | pci_out_supported(irq_ptr) ? 1 : 0, |
22f99347 JG |
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" : " ", | |
90adac58 JG |
534 | (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ", |
535 | (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " "); | |
75f62761 | 536 | printk(KERN_INFO "%s", s); |
779e6e1c JG |
537 | } |
538 | ||
104ea556 | 539 | int qdio_enable_async_operation(struct qdio_output_q *outq) |
540 | { | |
6396bb22 | 541 | outq->aobs = kcalloc(QDIO_MAX_BUFFERS_PER_Q, sizeof(struct qaob *), |
11f04465 | 542 | GFP_KERNEL); |
104ea556 | 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 | ||
779e6e1c JG |
558 | int __init qdio_setup_init(void) |
559 | { | |
104ea556 | 560 | int rc; |
561 | ||
779e6e1c JG |
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 | ||
104ea556 | 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 | ||
779e6e1c | 577 | /* Check for OSA/FCP thin interrupts (bit 67). */ |
22f99347 JG |
578 | DBF_EVENT("thinint:%1d", |
579 | (css_general_characteristics.aif_osa) ? 1 : 0); | |
779e6e1c JG |
580 | |
581 | /* Check for QEBSM support in general (bit 58). */ | |
22f99347 | 582 | DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); |
104ea556 | 583 | rc = 0; |
584 | out: | |
585 | return rc; | |
586 | free_qdio_q_cache: | |
587 | kmem_cache_destroy(qdio_q_cache); | |
588 | goto out; | |
779e6e1c JG |
589 | } |
590 | ||
3f1934bc | 591 | void qdio_setup_exit(void) |
779e6e1c | 592 | { |
104ea556 | 593 | kmem_cache_destroy(qdio_aob_cache); |
779e6e1c JG |
594 | kmem_cache_destroy(qdio_q_cache); |
595 | } |