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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; |
bdf11767 JW |
216 | struct qdio_buffer **input_sbal_array = qdio_init->input_sbal_addr_array; |
217 | struct qdio_buffer **output_sbal_array = qdio_init->output_sbal_addr_array; | |
104ea556 | 218 | struct qdio_outbuf_state *output_sbal_state_array = |
219 | qdio_init->output_sbal_state_array; | |
779e6e1c JG |
220 | int i; |
221 | ||
779e6e1c | 222 | for_each_input_queue(irq_ptr, q, i) { |
104ea556 | 223 | DBF_EVENT("inq:%1d", i); |
779e6e1c JG |
224 | setup_queues_misc(q, irq_ptr, qdio_init->input_handler, i); |
225 | ||
226 | q->is_input_q = 1; | |
e58b0d90 SM |
227 | q->u.in.queue_start_poll = qdio_init->queue_start_poll_array ? |
228 | qdio_init->queue_start_poll_array[i] : NULL; | |
104ea556 | 229 | |
22f99347 | 230 | setup_storage_lists(q, irq_ptr, input_sbal_array, i); |
779e6e1c JG |
231 | input_sbal_array += QDIO_MAX_BUFFERS_PER_Q; |
232 | ||
104ea556 | 233 | if (is_thinint_irq(irq_ptr)) { |
779e6e1c JG |
234 | tasklet_init(&q->tasklet, tiqdio_inbound_processing, |
235 | (unsigned long) q); | |
104ea556 | 236 | } else { |
779e6e1c JG |
237 | tasklet_init(&q->tasklet, qdio_inbound_processing, |
238 | (unsigned long) q); | |
104ea556 | 239 | } |
779e6e1c JG |
240 | } |
241 | ||
242 | for_each_output_queue(irq_ptr, q, i) { | |
22f99347 | 243 | DBF_EVENT("outq:%1d", i); |
779e6e1c JG |
244 | setup_queues_misc(q, irq_ptr, qdio_init->output_handler, i); |
245 | ||
104ea556 | 246 | q->u.out.sbal_state = output_sbal_state_array; |
247 | output_sbal_state_array += QDIO_MAX_BUFFERS_PER_Q; | |
248 | ||
779e6e1c | 249 | q->is_input_q = 0; |
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); | |
cb9f780a | 255 | timer_setup(&q->u.out.timer, qdio_outbound_timer, 0); |
779e6e1c JG |
256 | } |
257 | } | |
258 | ||
259 | static void process_ac_flags(struct qdio_irq *irq_ptr, unsigned char qdioac) | |
260 | { | |
261 | if (qdioac & AC1_SIGA_INPUT_NEEDED) | |
262 | irq_ptr->siga_flag.input = 1; | |
263 | if (qdioac & AC1_SIGA_OUTPUT_NEEDED) | |
264 | irq_ptr->siga_flag.output = 1; | |
265 | if (qdioac & AC1_SIGA_SYNC_NEEDED) | |
266 | irq_ptr->siga_flag.sync = 1; | |
90adac58 JG |
267 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_THININT)) |
268 | irq_ptr->siga_flag.sync_after_ai = 1; | |
269 | if (!(qdioac & AC1_AUTOMATIC_SYNC_ON_OUT_PCI)) | |
270 | irq_ptr->siga_flag.sync_out_after_pci = 1; | |
779e6e1c JG |
271 | } |
272 | ||
273 | static void check_and_setup_qebsm(struct qdio_irq *irq_ptr, | |
274 | unsigned char qdioac, unsigned long token) | |
275 | { | |
779e6e1c JG |
276 | if (!(irq_ptr->qib.rflags & QIB_RFLAGS_ENABLE_QEBSM)) |
277 | goto no_qebsm; | |
278 | if (!(qdioac & AC1_SC_QEBSM_AVAILABLE) || | |
279 | (!(qdioac & AC1_SC_QEBSM_ENABLED))) | |
280 | goto no_qebsm; | |
281 | ||
282 | irq_ptr->sch_token = token; | |
283 | ||
22f99347 JG |
284 | DBF_EVENT("V=V:1"); |
285 | DBF_EVENT("%8lx", irq_ptr->sch_token); | |
779e6e1c JG |
286 | return; |
287 | ||
288 | no_qebsm: | |
289 | irq_ptr->sch_token = 0; | |
290 | irq_ptr->qib.rflags &= ~QIB_RFLAGS_ENABLE_QEBSM; | |
22f99347 | 291 | DBF_EVENT("noV=V"); |
779e6e1c JG |
292 | } |
293 | ||
bbd50e17 JG |
294 | /* |
295 | * If there is a qdio_irq we use the chsc_page and store the information | |
296 | * in the qdio_irq, otherwise we copy it to the specified structure. | |
297 | */ | |
298 | int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, | |
299 | struct subchannel_id *schid, | |
300 | struct qdio_ssqd_desc *data) | |
779e6e1c JG |
301 | { |
302 | struct chsc_ssqd_area *ssqd; | |
303 | int rc; | |
304 | ||
22f99347 | 305 | DBF_EVENT("getssqd:%4x", schid->sch_no); |
da5b6cb1 | 306 | if (!irq_ptr) { |
bbd50e17 | 307 | ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL); |
da5b6cb1 SO |
308 | if (!ssqd) |
309 | return -ENOMEM; | |
310 | } else { | |
311 | ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page; | |
312 | } | |
313 | ||
314 | rc = chsc_ssqd(*schid, ssqd); | |
779e6e1c | 315 | if (rc) |
da5b6cb1 | 316 | goto out; |
779e6e1c JG |
317 | |
318 | if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) || | |
319 | !(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) || | |
bbd50e17 | 320 | (ssqd->qdio_ssqd.sch != schid->sch_no)) |
da5b6cb1 SO |
321 | rc = -EINVAL; |
322 | ||
323 | if (!rc) | |
324 | memcpy(data, &ssqd->qdio_ssqd, sizeof(*data)); | |
325 | ||
326 | out: | |
327 | if (!irq_ptr) | |
bbd50e17 | 328 | free_page((unsigned long)ssqd); |
da5b6cb1 SO |
329 | |
330 | return rc; | |
779e6e1c JG |
331 | } |
332 | ||
333 | void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr) | |
334 | { | |
335 | unsigned char qdioac; | |
779e6e1c JG |
336 | int rc; |
337 | ||
da5b6cb1 | 338 | rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, &irq_ptr->ssqd_desc); |
779e6e1c | 339 | if (rc) { |
22f99347 JG |
340 | DBF_ERROR("%4x ssqd ERR", irq_ptr->schid.sch_no); |
341 | DBF_ERROR("rc:%x", rc); | |
779e6e1c JG |
342 | /* all flags set, worst case */ |
343 | qdioac = AC1_SIGA_INPUT_NEEDED | AC1_SIGA_OUTPUT_NEEDED | | |
344 | AC1_SIGA_SYNC_NEEDED; | |
345 | } else | |
346 | qdioac = irq_ptr->ssqd_desc.qdioac1; | |
347 | ||
348 | check_and_setup_qebsm(irq_ptr, qdioac, irq_ptr->ssqd_desc.sch_token); | |
349 | process_ac_flags(irq_ptr, qdioac); | |
61d84979 JG |
350 | DBF_EVENT("ac 1:%2x 2:%4x", qdioac, irq_ptr->ssqd_desc.qdioac2); |
351 | DBF_EVENT("3:%4x qib:%4x", irq_ptr->ssqd_desc.qdioac3, irq_ptr->qib.ac); | |
779e6e1c JG |
352 | } |
353 | ||
354 | void qdio_release_memory(struct qdio_irq *irq_ptr) | |
355 | { | |
356 | struct qdio_q *q; | |
357 | int i; | |
358 | ||
359 | /* | |
360 | * Must check queue array manually since irq_ptr->nr_input_queues / | |
361 | * irq_ptr->nr_input_queues may not yet be set. | |
362 | */ | |
363 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
364 | q = irq_ptr->input_qs[i]; | |
365 | if (q) { | |
366 | free_page((unsigned long) q->slib); | |
367 | kmem_cache_free(qdio_q_cache, q); | |
368 | } | |
369 | } | |
370 | for (i = 0; i < QDIO_MAX_QUEUES_PER_IRQ; i++) { | |
371 | q = irq_ptr->output_qs[i]; | |
372 | if (q) { | |
104ea556 | 373 | if (q->u.out.use_cq) { |
374 | int n; | |
375 | ||
376 | for (n = 0; n < QDIO_MAX_BUFFERS_PER_Q; ++n) { | |
377 | struct qaob *aob = q->u.out.aobs[n]; | |
378 | if (aob) { | |
379 | qdio_release_aob(aob); | |
380 | q->u.out.aobs[n] = NULL; | |
381 | } | |
382 | } | |
383 | ||
384 | qdio_disable_async_operation(&q->u.out); | |
385 | } | |
779e6e1c JG |
386 | free_page((unsigned long) q->slib); |
387 | kmem_cache_free(qdio_q_cache, q); | |
388 | } | |
389 | } | |
3b8e3004 | 390 | free_page((unsigned long) irq_ptr->qdr); |
779e6e1c JG |
391 | free_page(irq_ptr->chsc_page); |
392 | free_page((unsigned long) irq_ptr); | |
393 | } | |
394 | ||
395 | static void __qdio_allocate_fill_qdr(struct qdio_irq *irq_ptr, | |
396 | struct qdio_q **irq_ptr_qs, | |
397 | int i, int nr) | |
398 | { | |
399 | irq_ptr->qdr->qdf0[i + nr].sliba = | |
400 | (unsigned long)irq_ptr_qs[i]->slib; | |
401 | ||
402 | irq_ptr->qdr->qdf0[i + nr].sla = | |
403 | (unsigned long)irq_ptr_qs[i]->sl; | |
404 | ||
405 | irq_ptr->qdr->qdf0[i + nr].slsba = | |
406 | (unsigned long)&irq_ptr_qs[i]->slsb.val[0]; | |
407 | ||
d1bf8590 HC |
408 | irq_ptr->qdr->qdf0[i + nr].akey = PAGE_DEFAULT_KEY >> 4; |
409 | irq_ptr->qdr->qdf0[i + nr].bkey = PAGE_DEFAULT_KEY >> 4; | |
410 | irq_ptr->qdr->qdf0[i + nr].ckey = PAGE_DEFAULT_KEY >> 4; | |
411 | irq_ptr->qdr->qdf0[i + nr].dkey = PAGE_DEFAULT_KEY >> 4; | |
779e6e1c JG |
412 | } |
413 | ||
414 | static void setup_qdr(struct qdio_irq *irq_ptr, | |
415 | struct qdio_initialize *qdio_init) | |
416 | { | |
417 | int i; | |
418 | ||
419 | irq_ptr->qdr->qfmt = qdio_init->q_format; | |
dfe5bb50 | 420 | irq_ptr->qdr->ac = qdio_init->qdr_ac; |
779e6e1c JG |
421 | irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs; |
422 | irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs; | |
423 | irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */ | |
424 | irq_ptr->qdr->oqdsz = sizeof(struct qdesfmt0) / 4; | |
425 | irq_ptr->qdr->qiba = (unsigned long)&irq_ptr->qib; | |
d1bf8590 | 426 | irq_ptr->qdr->qkey = PAGE_DEFAULT_KEY >> 4; |
779e6e1c JG |
427 | |
428 | for (i = 0; i < qdio_init->no_input_qs; i++) | |
429 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->input_qs, i, 0); | |
430 | ||
431 | for (i = 0; i < qdio_init->no_output_qs; i++) | |
432 | __qdio_allocate_fill_qdr(irq_ptr, irq_ptr->output_qs, i, | |
433 | qdio_init->no_input_qs); | |
434 | } | |
435 | ||
436 | static void setup_qib(struct qdio_irq *irq_ptr, | |
437 | struct qdio_initialize *init_data) | |
438 | { | |
439 | if (qebsm_possible()) | |
440 | irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM; | |
441 | ||
dcc18f48 CS |
442 | irq_ptr->qib.rflags |= init_data->qib_rflags; |
443 | ||
779e6e1c JG |
444 | irq_ptr->qib.qfmt = init_data->q_format; |
445 | if (init_data->no_input_qs) | |
446 | irq_ptr->qib.isliba = | |
447 | (unsigned long)(irq_ptr->input_qs[0]->slib); | |
448 | if (init_data->no_output_qs) | |
449 | irq_ptr->qib.osliba = | |
450 | (unsigned long)(irq_ptr->output_qs[0]->slib); | |
451 | memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); | |
452 | } | |
453 | ||
454 | int qdio_setup_irq(struct qdio_initialize *init_data) | |
455 | { | |
456 | struct ciw *ciw; | |
457 | struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; | |
779e6e1c | 458 | |
432ac5e0 JG |
459 | memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); |
460 | memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); | |
461 | memset(&irq_ptr->ccw, 0, sizeof(irq_ptr->ccw)); | |
462 | memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); | |
463 | memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); | |
464 | ||
465 | irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL; | |
466 | irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0; | |
467 | ||
779e6e1c JG |
468 | /* wipes qib.ac, required by ar7063 */ |
469 | memset(irq_ptr->qdr, 0, sizeof(struct qdr)); | |
470 | ||
471 | irq_ptr->int_parm = init_data->int_parm; | |
472 | irq_ptr->nr_input_qs = init_data->no_input_qs; | |
473 | irq_ptr->nr_output_qs = init_data->no_output_qs; | |
779e6e1c | 474 | irq_ptr->cdev = init_data->cdev; |
313dc689 | 475 | irq_ptr->scan_threshold = init_data->scan_threshold; |
287a0933 | 476 | ccw_device_get_schid(irq_ptr->cdev, &irq_ptr->schid); |
779e6e1c JG |
477 | setup_queues(irq_ptr, init_data); |
478 | ||
479 | setup_qib(irq_ptr, init_data); | |
480 | qdio_setup_thinint(irq_ptr); | |
481 | set_impl_params(irq_ptr, init_data->qib_param_field_format, | |
482 | init_data->qib_param_field, | |
483 | init_data->input_slib_elements, | |
484 | init_data->output_slib_elements); | |
485 | ||
486 | /* fill input and output descriptors */ | |
487 | setup_qdr(irq_ptr, init_data); | |
488 | ||
489 | /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ | |
490 | ||
491 | /* get qdio commands */ | |
492 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); | |
493 | if (!ciw) { | |
22f99347 | 494 | DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); |
2e68adcd | 495 | return -EINVAL; |
779e6e1c JG |
496 | } |
497 | irq_ptr->equeue = *ciw; | |
498 | ||
499 | ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); | |
500 | if (!ciw) { | |
22f99347 | 501 | DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); |
2e68adcd | 502 | return -EINVAL; |
779e6e1c JG |
503 | } |
504 | irq_ptr->aqueue = *ciw; | |
505 | ||
506 | /* set new interrupt handler */ | |
7eee12b4 | 507 | spin_lock_irq(get_ccwdev_lock(irq_ptr->cdev)); |
779e6e1c JG |
508 | irq_ptr->orig_handler = init_data->cdev->handler; |
509 | init_data->cdev->handler = qdio_int_handler; | |
7eee12b4 | 510 | spin_unlock_irq(get_ccwdev_lock(irq_ptr->cdev)); |
779e6e1c | 511 | return 0; |
779e6e1c JG |
512 | } |
513 | ||
514 | void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, | |
515 | struct ccw_device *cdev) | |
516 | { | |
517 | char s[80]; | |
518 | ||
22f99347 | 519 | snprintf(s, 80, "qdio: %s %s on SC %x using " |
6726a807 | 520 | "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n", |
22f99347 JG |
521 | dev_name(&cdev->dev), |
522 | (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" : | |
523 | ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"), | |
524 | irq_ptr->schid.sch_no, | |
525 | is_thinint_irq(irq_ptr), | |
526 | (irq_ptr->sch_token) ? 1 : 0, | |
f85b2b29 | 527 | pci_out_supported(irq_ptr) ? 1 : 0, |
22f99347 JG |
528 | css_general_characteristics.aif_tdd, |
529 | (irq_ptr->siga_flag.input) ? "R" : " ", | |
530 | (irq_ptr->siga_flag.output) ? "W" : " ", | |
531 | (irq_ptr->siga_flag.sync) ? "S" : " ", | |
90adac58 JG |
532 | (irq_ptr->siga_flag.sync_after_ai) ? "A" : " ", |
533 | (irq_ptr->siga_flag.sync_out_after_pci) ? "P" : " "); | |
75f62761 | 534 | printk(KERN_INFO "%s", s); |
779e6e1c JG |
535 | } |
536 | ||
104ea556 | 537 | int qdio_enable_async_operation(struct qdio_output_q *outq) |
538 | { | |
6396bb22 | 539 | outq->aobs = kcalloc(QDIO_MAX_BUFFERS_PER_Q, sizeof(struct qaob *), |
11f04465 | 540 | GFP_KERNEL); |
104ea556 | 541 | if (!outq->aobs) { |
542 | outq->use_cq = 0; | |
543 | return -ENOMEM; | |
544 | } | |
545 | outq->use_cq = 1; | |
546 | return 0; | |
547 | } | |
548 | ||
549 | void qdio_disable_async_operation(struct qdio_output_q *q) | |
550 | { | |
551 | kfree(q->aobs); | |
552 | q->aobs = NULL; | |
553 | q->use_cq = 0; | |
554 | } | |
555 | ||
779e6e1c JG |
556 | int __init qdio_setup_init(void) |
557 | { | |
104ea556 | 558 | int rc; |
559 | ||
779e6e1c JG |
560 | qdio_q_cache = kmem_cache_create("qdio_q", sizeof(struct qdio_q), |
561 | 256, 0, NULL); | |
562 | if (!qdio_q_cache) | |
563 | return -ENOMEM; | |
564 | ||
104ea556 | 565 | qdio_aob_cache = kmem_cache_create("qdio_aob", |
566 | sizeof(struct qaob), | |
567 | sizeof(struct qaob), | |
568 | 0, | |
569 | NULL); | |
570 | if (!qdio_aob_cache) { | |
571 | rc = -ENOMEM; | |
572 | goto free_qdio_q_cache; | |
573 | } | |
574 | ||
779e6e1c | 575 | /* Check for OSA/FCP thin interrupts (bit 67). */ |
22f99347 JG |
576 | DBF_EVENT("thinint:%1d", |
577 | (css_general_characteristics.aif_osa) ? 1 : 0); | |
779e6e1c JG |
578 | |
579 | /* Check for QEBSM support in general (bit 58). */ | |
22f99347 | 580 | DBF_EVENT("cssQEBSM:%1d", (qebsm_possible()) ? 1 : 0); |
104ea556 | 581 | rc = 0; |
582 | out: | |
583 | return rc; | |
584 | free_qdio_q_cache: | |
585 | kmem_cache_destroy(qdio_q_cache); | |
586 | goto out; | |
779e6e1c JG |
587 | } |
588 | ||
3f1934bc | 589 | void qdio_setup_exit(void) |
779e6e1c | 590 | { |
104ea556 | 591 | kmem_cache_destroy(qdio_aob_cache); |
779e6e1c JG |
592 | kmem_cache_destroy(qdio_q_cache); |
593 | } |