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Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-block.git] / drivers / s390 / net / qeth_core_main.c
CommitLineData
ab9953ff 1// SPDX-License-Identifier: GPL-2.0
4a71df50 2/*
bbcfcdc8 3 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
74eacdb9
FB		 10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
0d55303c 13#include <linux/compat.h>
4a71df50
FB		 14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
55494264 19#include <linux/log2.h>
4a71df50 20#include <linux/ip.h>
4a71df50
FB		 21#include <linux/tcp.h>
22#include <linux/mii.h>
4e2fe4ed 23#include <linux/mm.h>
4a71df50 24#include <linux/kthread.h>
5a0e3ad6 25#include <linux/slab.h>
6d69b1f1
JW		 26#include <linux/if_vlan.h>
27#include <linux/netdevice.h>
28#include <linux/netdev_features.h>
29#include <linux/skbuff.h>
aec45e85 30#include <linux/vmalloc.h>
6d69b1f1 31
b3332930 32#include <net/iucv/af_iucv.h>
290b8348 33#include <net/dsfield.h>
4a71df50 34
ab4227cb 35#include <asm/ebcdic.h>
2bf29df7 36#include <asm/chpid.h>
ab4227cb 37#include <asm/io.h>
1da74b1c 38#include <asm/sysinfo.h>
ec61bd2f
JW		 39#include <asm/diag.h>
40#include <asm/cio.h>
41#include <asm/ccwdev.h>
615dff22 42#include <asm/cpcmd.h>
4a71df50
FB		 43
44#include "qeth_core.h"
4a71df50 45
d11ba0c4
PT		 46struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
47 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
48 /* N P A M L V H */
49 [QETH_DBF_SETUP] = {"qeth_setup",
50 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
f7e1e65d
SO		 51 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
52 &debug_sprintf_view, NULL},
d11ba0c4
PT		 53 [QETH_DBF_CTRL] = {"qeth_control",
54 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
55};
56EXPORT_SYMBOL_GPL(qeth_dbf);
4a71df50 57
683d718a
FB		 58struct kmem_cache *qeth_core_header_cache;
59EXPORT_SYMBOL_GPL(qeth_core_header_cache);
0da9581d 60static struct kmem_cache *qeth_qdio_outbuf_cache;
4a71df50
FB		 61
62static struct device *qeth_core_root_dev;
4a71df50 63static struct lock_class_key qdio_out_skb_queue_key;
4a71df50 64
988a747d 65static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 66 struct qeth_cmd_buffer *iob,
67 unsigned int data_length);
4a71df50 68static int qeth_qdio_establish(struct qeth_card *);
41c47da3 69static void qeth_free_qdio_queues(struct qeth_card *card);
b3332930
FB		 70static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
71 struct qeth_qdio_out_buffer *buf,
72 enum iucv_tx_notify notification);
85e537d8
JW		 73static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
74 int budget);
72861ae7 75static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
4a71df50 76
0f54761d
SR		 77static void qeth_close_dev_handler(struct work_struct *work)
78{
79 struct qeth_card *card;
80
81 card = container_of(work, struct qeth_card, close_dev_work);
82 QETH_CARD_TEXT(card, 2, "cldevhdl");
0f54761d
SR		 83 ccwgroup_set_offline(card->gdev);
84}
85
cef6ff22 86static const char *qeth_get_cardname(struct qeth_card *card)
4a71df50 87{
379ac99e 88 if (IS_VM_NIC(card)) {
4a71df50 89 switch (card->info.type) {
5113fec0 90 case QETH_CARD_TYPE_OSD:
7096b187 91 return " Virtual NIC QDIO";
4a71df50 92 case QETH_CARD_TYPE_IQD:
7096b187 93 return " Virtual NIC Hiper";
5113fec0 94 case QETH_CARD_TYPE_OSM:
7096b187 95 return " Virtual NIC QDIO - OSM";
5113fec0 96 case QETH_CARD_TYPE_OSX:
7096b187 97 return " Virtual NIC QDIO - OSX";
4a71df50
FB		 98 default:
99 return " unknown";
100 }
101 } else {
102 switch (card->info.type) {
5113fec0 103 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 104 return " OSD Express";
105 case QETH_CARD_TYPE_IQD:
106 return " HiperSockets";
107 case QETH_CARD_TYPE_OSN:
108 return " OSN QDIO";
5113fec0
UB		 109 case QETH_CARD_TYPE_OSM:
110 return " OSM QDIO";
111 case QETH_CARD_TYPE_OSX:
112 return " OSX QDIO";
4a71df50
FB		 113 default:
114 return " unknown";
115 }
116 }
117 return " n/a";
118}
119
120/* max length to be returned: 14 */
121const char *qeth_get_cardname_short(struct qeth_card *card)
122{
379ac99e 123 if (IS_VM_NIC(card)) {
4a71df50 124 switch (card->info.type) {
5113fec0 125 case QETH_CARD_TYPE_OSD:
7096b187 126 return "Virt.NIC QDIO";
4a71df50 127 case QETH_CARD_TYPE_IQD:
7096b187 128 return "Virt.NIC Hiper";
5113fec0 129 case QETH_CARD_TYPE_OSM:
7096b187 130 return "Virt.NIC OSM";
5113fec0 131 case QETH_CARD_TYPE_OSX:
7096b187 132 return "Virt.NIC OSX";
4a71df50
FB		 133 default:
134 return "unknown";
135 }
136 } else {
137 switch (card->info.type) {
5113fec0 138 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 139 switch (card->info.link_type) {
140 case QETH_LINK_TYPE_FAST_ETH:
141 return "OSD_100";
142 case QETH_LINK_TYPE_HSTR:
143 return "HSTR";
144 case QETH_LINK_TYPE_GBIT_ETH:
145 return "OSD_1000";
146 case QETH_LINK_TYPE_10GBIT_ETH:
147 return "OSD_10GIG";
54e049c2
JW		 148 case QETH_LINK_TYPE_25GBIT_ETH:
149 return "OSD_25GIG";
4a71df50
FB		 150 case QETH_LINK_TYPE_LANE_ETH100:
151 return "OSD_FE_LANE";
152 case QETH_LINK_TYPE_LANE_TR:
153 return "OSD_TR_LANE";
154 case QETH_LINK_TYPE_LANE_ETH1000:
155 return "OSD_GbE_LANE";
156 case QETH_LINK_TYPE_LANE:
157 return "OSD_ATM_LANE";
158 default:
159 return "OSD_Express";
160 }
161 case QETH_CARD_TYPE_IQD:
162 return "HiperSockets";
163 case QETH_CARD_TYPE_OSN:
164 return "OSN";
5113fec0
UB		 165 case QETH_CARD_TYPE_OSM:
166 return "OSM_1000";
167 case QETH_CARD_TYPE_OSX:
168 return "OSX_10GIG";
4a71df50
FB		 169 default:
170 return "unknown";
171 }
172 }
173 return "n/a";
174}
175
176void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
177 int clear_start_mask)
178{
179 unsigned long flags;
180
181 spin_lock_irqsave(&card->thread_mask_lock, flags);
182 card->thread_allowed_mask = threads;
183 if (clear_start_mask)
184 card->thread_start_mask &= threads;
185 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
186 wake_up(&card->wait_q);
187}
188EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
189
190int qeth_threads_running(struct qeth_card *card, unsigned long threads)
191{
192 unsigned long flags;
193 int rc = 0;
194
195 spin_lock_irqsave(&card->thread_mask_lock, flags);
196 rc = (card->thread_running_mask & threads);
197 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
198 return rc;
199}
200EXPORT_SYMBOL_GPL(qeth_threads_running);
201
4a71df50
FB		 202void qeth_clear_working_pool_list(struct qeth_card *card)
203{
204 struct qeth_buffer_pool_entry *pool_entry, *tmp;
205
847a50fd 206 QETH_CARD_TEXT(card, 5, "clwrklst");
4a71df50
FB		 207 list_for_each_entry_safe(pool_entry, tmp,
208 &card->qdio.in_buf_pool.entry_list, list){
209 list_del(&pool_entry->list);
210 }
211}
212EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
213
0f75e149
JW		 214static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
215{
216 unsigned int i;
217
218 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
219 if (entry->elements[i])
220 __free_page(entry->elements[i]);
221 }
222
223 kfree(entry);
224}
225
226static void qeth_free_buffer_pool(struct qeth_card *card)
227{
228 struct qeth_buffer_pool_entry *entry, *tmp;
229
230 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
231 init_list) {
232 list_del(&entry->init_list);
233 qeth_free_pool_entry(entry);
234 }
235}
236
237static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
238{
239 struct qeth_buffer_pool_entry *entry;
240 unsigned int i;
241
242 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
243 if (!entry)
244 return NULL;
245
246 for (i = 0; i < pages; i++) {
247 entry->elements[i] = alloc_page(GFP_KERNEL);
248
249 if (!entry->elements[i]) {
250 qeth_free_pool_entry(entry);
251 return NULL;
252 }
253 }
254
255 return entry;
256}
257
4a71df50
FB		 258static int qeth_alloc_buffer_pool(struct qeth_card *card)
259{
0f75e149
JW		 260 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
261 unsigned int i;
4a71df50 262
847a50fd 263 QETH_CARD_TEXT(card, 5, "alocpool");
4a71df50 264 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
0f75e149
JW		 265 struct qeth_buffer_pool_entry *entry;
266
267 entry = qeth_alloc_pool_entry(buf_elements);
268 if (!entry) {
4a71df50
FB		 269 qeth_free_buffer_pool(card);
270 return -ENOMEM;
271 }
f81649df 272
0f75e149 273 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
4a71df50
FB		 274 }
275 return 0;
276}
277
5d4f7856 278int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
4a71df50 279{
5d4f7856
JW		 280 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
281 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
282 struct qeth_buffer_pool_entry *entry, *tmp;
283 int delta = count - pool->buf_count;
284 LIST_HEAD(entries);
285
847a50fd 286 QETH_CARD_TEXT(card, 2, "realcbp");
4a71df50 287
5d4f7856
JW		 288 /* Defer until queue is allocated: */
289 if (!card->qdio.in_q)
290 goto out;
291
292 /* Remove entries from the pool: */
293 while (delta < 0) {
294 entry = list_first_entry(&pool->entry_list,
295 struct qeth_buffer_pool_entry,
296 init_list);
297 list_del(&entry->init_list);
298 qeth_free_pool_entry(entry);
299
300 delta++;
301 }
302
303 /* Allocate additional entries: */
304 while (delta > 0) {
305 entry = qeth_alloc_pool_entry(buf_elements);
306 if (!entry) {
307 list_for_each_entry_safe(entry, tmp, &entries,
308 init_list) {
309 list_del(&entry->init_list);
310 qeth_free_pool_entry(entry);
311 }
312
313 return -ENOMEM;
314 }
315
316 list_add(&entry->init_list, &entries);
317
318 delta--;
319 }
320
321 list_splice(&entries, &pool->entry_list);
322
323out:
324 card->qdio.in_buf_pool.buf_count = count;
325 pool->buf_count = count;
326 return 0;
4a71df50 327}
5d4f7856 328EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
4a71df50 329
4601ba6c
SO		 330static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
331{
6d284bde
SO		 332 if (!q)
333 return;
334
335 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
4601ba6c
SO		 336 kfree(q);
337}
338
339static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
340{
341 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
342 int i;
343
344 if (!q)
345 return NULL;
346
6d284bde
SO		 347 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
348 kfree(q);
349 return NULL;
350 }
351
4601ba6c 352 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
6d284bde 353 q->bufs[i].buffer = q->qdio_bufs[i];
4601ba6c
SO		 354
355 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
356 return q;
357}
358
cef6ff22 359static int qeth_cq_init(struct qeth_card *card)
0da9581d
EL		 360{
361 int rc;
362
363 if (card->options.cq == QETH_CQ_ENABLED) {
57a688aa 364 QETH_CARD_TEXT(card, 2, "cqinit");
6d284bde
SO		 365 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
366 QDIO_MAX_BUFFERS_PER_Q);
0da9581d
EL		 367 card->qdio.c_q->next_buf_to_init = 127;
368 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
369 card->qdio.no_in_queues - 1, 0,
370 127);
371 if (rc) {
57a688aa 372 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
0da9581d
EL		 373 goto out;
374 }
375 }
376 rc = 0;
377out:
378 return rc;
379}
380
cef6ff22 381static int qeth_alloc_cq(struct qeth_card *card)
0da9581d
EL		 382{
383 int rc;
384
385 if (card->options.cq == QETH_CQ_ENABLED) {
386 int i;
387 struct qdio_outbuf_state *outbuf_states;
388
57a688aa 389 QETH_CARD_TEXT(card, 2, "cqon");
4601ba6c 390 card->qdio.c_q = qeth_alloc_qdio_queue();
0da9581d
EL		 391 if (!card->qdio.c_q) {
392 rc = -1;
393 goto kmsg_out;
394 }
0da9581d 395 card->qdio.no_in_queues = 2;
4a912f98 396 card->qdio.out_bufstates =
6396bb22
KC		 397 kcalloc(card->qdio.no_out_queues *
398 QDIO_MAX_BUFFERS_PER_Q,
399 sizeof(struct qdio_outbuf_state),
400 GFP_KERNEL);
0da9581d
EL		 401 outbuf_states = card->qdio.out_bufstates;
402 if (outbuf_states == NULL) {
403 rc = -1;
404 goto free_cq_out;
405 }
406 for (i = 0; i < card->qdio.no_out_queues; ++i) {
407 card->qdio.out_qs[i]->bufstates = outbuf_states;
408 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
409 }
410 } else {
57a688aa 411 QETH_CARD_TEXT(card, 2, "nocq");
0da9581d
EL		 412 card->qdio.c_q = NULL;
413 card->qdio.no_in_queues = 1;
414 }
57a688aa 415 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
0da9581d
EL		 416 rc = 0;
417out:
418 return rc;
419free_cq_out:
4601ba6c 420 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 421 card->qdio.c_q = NULL;
422kmsg_out:
423 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
424 goto out;
425}
426
cef6ff22 427static void qeth_free_cq(struct qeth_card *card)
0da9581d
EL		 428{
429 if (card->qdio.c_q) {
430 --card->qdio.no_in_queues;
4601ba6c 431 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 432 card->qdio.c_q = NULL;
433 }
434 kfree(card->qdio.out_bufstates);
435 card->qdio.out_bufstates = NULL;
436}
437
cef6ff22
JW		 438static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
439 int delayed)
440{
b3332930
FB		 441 enum iucv_tx_notify n;
442
443 switch (sbalf15) {
444 case 0:
445 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
446 break;
447 case 4:
448 case 16:
449 case 17:
450 case 18:
451 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
452 TX_NOTIFY_UNREACHABLE;
453 break;
454 default:
455 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
456 TX_NOTIFY_GENERALERROR;
457 break;
458 }
459
460 return n;
461}
462
cef6ff22
JW		 463static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
464 int forced_cleanup)
0da9581d 465{
72861ae7
EL		 466 if (q->card->options.cq != QETH_CQ_ENABLED)
467 return;
468
0da9581d
EL		 469 if (q->bufs[bidx]->next_pending != NULL) {
470 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
471 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
472
473 while (c) {
474 if (forced_cleanup ||
475 atomic_read(&c->state) ==
476 QETH_QDIO_BUF_HANDLED_DELAYED) {
477 struct qeth_qdio_out_buffer *f = c;
478 QETH_CARD_TEXT(f->q->card, 5, "fp");
479 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
b3332930
FB		 480 /* release here to avoid interleaving between
481 outbound tasklet and inbound tasklet
482 regarding notifications and lifecycle */
85e537d8 483 qeth_tx_complete_buf(c, forced_cleanup, 0);
b3332930 484
0da9581d 485 c = f->next_pending;
18af5c17 486 WARN_ON_ONCE(head->next_pending != f);
0da9581d
EL		 487 head->next_pending = c;
488 kmem_cache_free(qeth_qdio_outbuf_cache, f);
489 } else {
490 head = c;
491 c = c->next_pending;
492 }
493
494 }
495 }
72861ae7
EL		 496 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
497 QETH_QDIO_BUF_HANDLED_DELAYED)) {
498 /* for recovery situations */
72861ae7
EL		 499 qeth_init_qdio_out_buf(q, bidx);
500 QETH_CARD_TEXT(q->card, 2, "clprecov");
501 }
0da9581d
EL		 502}
503
504
cef6ff22
JW		 505static void qeth_qdio_handle_aob(struct qeth_card *card,
506 unsigned long phys_aob_addr)
507{
0da9581d
EL		 508 struct qaob *aob;
509 struct qeth_qdio_out_buffer *buffer;
b3332930 510 enum iucv_tx_notify notification;
ce28867f 511 unsigned int i;
0da9581d
EL		 512
513 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
514 QETH_CARD_TEXT(card, 5, "haob");
515 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
516 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
517 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
518
b3332930
FB		 519 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
520 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
521 notification = TX_NOTIFY_OK;
522 } else {
18af5c17
SR		 523 WARN_ON_ONCE(atomic_read(&buffer->state) !=
524 QETH_QDIO_BUF_PENDING);
b3332930
FB		 525 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
526 notification = TX_NOTIFY_DELAYED_OK;
527 }
528
529 if (aob->aorc != 0) {
530 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
531 notification = qeth_compute_cq_notification(aob->aorc, 1);
532 }
533 qeth_notify_skbs(buffer->q, buffer, notification);
534
ce28867f
JW		 535 /* Free dangling allocations. The attached skbs are handled by
536 * qeth_cleanup_handled_pending().
537 */
538 for (i = 0;
539 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
540 i++) {
541 if (aob->sba[i] && buffer->is_header[i])
542 kmem_cache_free(qeth_core_header_cache,
543 (void *) aob->sba[i]);
544 }
545 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
72861ae7 546
0da9581d
EL		 547 qdio_release_aob(aob);
548}
549
550static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
551{
552 return card->options.cq == QETH_CQ_ENABLED &&
553 card->qdio.c_q != NULL &&
554 queue != 0 &&
555 queue == card->qdio.no_in_queues - 1;
556}
557
40554895
JW		 558static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
559 void *data)
45ca2fd6
JW		 560{
561 ccw->cmd_code = cmd_code;
40554895 562 ccw->flags = flags | CCW_FLAG_SLI;
45ca2fd6
JW		 563 ccw->count = len;
564 ccw->cda = (__u32) __pa(data);
565}
566
17bf8c9b 567static int __qeth_issue_next_read(struct qeth_card *card)
4a71df50 568{
d9b9f40b
JW		 569 struct qeth_cmd_buffer *iob = card->read_cmd;
570 struct qeth_channel *channel = iob->channel;
571 struct ccw1 *ccw = __ccw_from_cmd(iob);
750b1625 572 int rc;
4a71df50 573
847a50fd 574 QETH_CARD_TEXT(card, 5, "issnxrd");
750b1625 575 if (channel->state != CH_STATE_UP)
4a71df50 576 return -EIO;
988a747d 577
d9b9f40b
JW		 578 memset(iob->data, 0, iob->length);
579 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
988a747d 580 iob->callback = qeth_issue_next_read_cb;
d9b9f40b
JW		 581 /* keep the cmd alive after completion: */
582 qeth_get_cmd(iob);
583
847a50fd 584 QETH_CARD_TEXT(card, 6, "noirqpnd");
40554895 585 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
f9e50b02
JW		 586 if (!rc) {
587 channel->active_cmd = iob;
588 } else {
e19e5be8
JW		 589 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
590 rc, CARD_DEVID(card));
7359393f 591 qeth_unlock_channel(card, channel);
c3b2218d 592 qeth_put_cmd(iob);
908abbb5 593 card->read_or_write_problem = 1;
4a71df50 594 qeth_schedule_recovery(card);
4a71df50
FB		 595 }
596 return rc;
597}
598
17bf8c9b
JW		 599static int qeth_issue_next_read(struct qeth_card *card)
600{
601 int ret;
602
603 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
604 ret = __qeth_issue_next_read(card);
605 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
606
607 return ret;
608}
609
308946b0
JW		 610static void qeth_enqueue_cmd(struct qeth_card *card,
611 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 612{
613 spin_lock_irq(&card->lock);
308946b0 614 list_add_tail(&iob->list, &card->cmd_waiter_list);
0951c6ba
JW		 615 spin_unlock_irq(&card->lock);
616}
617
308946b0
JW		 618static void qeth_dequeue_cmd(struct qeth_card *card,
619 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 620{
621 spin_lock_irq(&card->lock);
308946b0 622 list_del(&iob->list);
0951c6ba
JW		 623 spin_unlock_irq(&card->lock);
624}
625
308946b0 626void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
0951c6ba 627{
308946b0
JW		 628 iob->rc = reason;
629 complete(&iob->done);
0951c6ba 630}
308946b0 631EXPORT_SYMBOL_GPL(qeth_notify_cmd);
0951c6ba 632
d11ba0c4 633static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
4a71df50
FB		 634 struct qeth_card *card)
635{
048a7f8b 636 const char *ipa_name;
d11ba0c4 637 int com = cmd->hdr.command;
4a71df50 638 ipa_name = qeth_get_ipa_cmd_name(com);
e19e5be8 639
d11ba0c4 640 if (rc)
e19e5be8
JW		 641 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
642 ipa_name, com, CARD_DEVID(card), rc,
643 qeth_get_ipa_msg(rc));
d11ba0c4 644 else
e19e5be8
JW		 645 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
646 ipa_name, com, CARD_DEVID(card));
4a71df50
FB		 647}
648
649static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 650 struct qeth_ipa_cmd *cmd)
4a71df50 651{
847a50fd 652 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 653
654 if (IS_IPA_REPLY(cmd)) {
655 if (cmd->hdr.command != IPA_CMD_SETCCID &&
656 cmd->hdr.command != IPA_CMD_DELCCID &&
657 cmd->hdr.command != IPA_CMD_MODCCID &&
658 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
659 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
660 return cmd;
661 }
662
663 /* handle unsolicited event: */
664 switch (cmd->hdr.command) {
665 case IPA_CMD_STOPLAN:
666 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
667 dev_err(&card->gdev->dev,
668 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
669 QETH_CARD_IFNAME(card));
dcef5cad 670 schedule_work(&card->close_dev_work);
4a71df50 671 } else {
d19b93f4
JW		 672 dev_warn(&card->gdev->dev,
673 "The link for interface %s on CHPID 0x%X failed\n",
674 QETH_CARD_IFNAME(card), card->info.chpid);
675 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 676 netif_carrier_off(card->dev);
4a71df50 677 }
d19b93f4
JW		 678 return NULL;
679 case IPA_CMD_STARTLAN:
680 dev_info(&card->gdev->dev,
681 "The link for %s on CHPID 0x%X has been restored\n",
682 QETH_CARD_IFNAME(card), card->info.chpid);
d19b93f4
JW		 683 if (card->info.hwtrap)
684 card->info.hwtrap = 2;
685 qeth_schedule_recovery(card);
686 return NULL;
687 case IPA_CMD_SETBRIDGEPORT_IQD:
688 case IPA_CMD_SETBRIDGEPORT_OSA:
689 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
690 if (card->discipline->control_event_handler(card, cmd))
691 return cmd;
692 return NULL;
693 case IPA_CMD_MODCCID:
694 return cmd;
695 case IPA_CMD_REGISTER_LOCAL_ADDR:
696 QETH_CARD_TEXT(card, 3, "irla");
697 return NULL;
698 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
699 QETH_CARD_TEXT(card, 3, "urla");
700 return NULL;
701 default:
702 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
703 return cmd;
4a71df50 704 }
4a71df50
FB		 705}
706
707void qeth_clear_ipacmd_list(struct qeth_card *card)
708{
308946b0 709 struct qeth_cmd_buffer *iob;
4a71df50
FB		 710 unsigned long flags;
711
847a50fd 712 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 713
714 spin_lock_irqsave(&card->lock, flags);
308946b0
JW		 715 list_for_each_entry(iob, &card->cmd_waiter_list, list)
716 qeth_notify_cmd(iob, -EIO);
4a71df50
FB		 717 spin_unlock_irqrestore(&card->lock, flags);
718}
719EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
720
5113fec0
UB		 721static int qeth_check_idx_response(struct qeth_card *card,
722 unsigned char *buffer)
4a71df50 723{
d11ba0c4 724 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
2e3d7fa5 725 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
e19e5be8 726 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 727 buffer[4]);
847a50fd
CO		 728 QETH_CARD_TEXT(card, 2, "ckidxres");
729 QETH_CARD_TEXT(card, 2, " idxterm");
2e3d7fa5
JW		 730 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
731 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
732 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
5113fec0 733 dev_err(&card->gdev->dev,
2e3d7fa5
JW		 734 "The device does not support the configured transport mode\n");
735 return -EPROTONOSUPPORT;
5113fec0 736 }
4a71df50
FB		 737 return -EIO;
738 }
739 return 0;
740}
741
c3b2218d 742void qeth_put_cmd(struct qeth_cmd_buffer *iob)
d9b9f40b
JW		 743{
744 if (refcount_dec_and_test(&iob->ref_count)) {
d9b9f40b
JW		 745 kfree(iob->data);
746 kfree(iob);
747 }
748}
c3b2218d 749EXPORT_SYMBOL_GPL(qeth_put_cmd);
4a71df50 750
8f6637b8 751static void qeth_release_buffer_cb(struct qeth_card *card,
12fc286f
JW		 752 struct qeth_cmd_buffer *iob,
753 unsigned int data_length)
8f6637b8 754{
c3b2218d 755 qeth_put_cmd(iob);
8f6637b8
JW		 756}
757
54daaca7
JW		 758static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
759{
308946b0 760 qeth_notify_cmd(iob, rc);
c3b2218d 761 qeth_put_cmd(iob);
4a71df50 762}
4a71df50 763
a59d121d
JW		 764struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
765 unsigned int length, unsigned int ccws,
766 long timeout)
40554895
JW		 767{
768 struct qeth_cmd_buffer *iob;
769
770 if (length > QETH_BUFSIZE)
771 return NULL;
772
773 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
774 if (!iob)
775 return NULL;
776
777 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
778 GFP_KERNEL | GFP_DMA);
779 if (!iob->data) {
780 kfree(iob);
781 return NULL;
782 }
783
308946b0
JW		 784 init_completion(&iob->done);
785 spin_lock_init(&iob->lock);
786 INIT_LIST_HEAD(&iob->list);
d9b9f40b 787 refcount_set(&iob->ref_count, 1);
40554895
JW		 788 iob->channel = channel;
789 iob->timeout = timeout;
790 iob->length = length;
791 return iob;
792}
a59d121d 793EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
40554895 794
988a747d 795static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 796 struct qeth_cmd_buffer *iob,
797 unsigned int data_length)
4a71df50 798{
308946b0 799 struct qeth_cmd_buffer *request = NULL;
d19b93f4 800 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba 801 struct qeth_reply *reply = NULL;
308946b0 802 struct qeth_cmd_buffer *tmp;
4a71df50 803 unsigned long flags;
5113fec0 804 int rc = 0;
4a71df50 805
847a50fd 806 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 807 rc = qeth_check_idx_response(card, iob->data);
808 switch (rc) {
809 case 0:
810 break;
811 case -EIO:
5113fec0 812 qeth_schedule_recovery(card);
01fc3e86 813 /* fall through */
5113fec0 814 default:
2e3d7fa5 815 qeth_clear_ipacmd_list(card);
4a71df50
FB		 816 goto out;
817 }
818
7f92316c
JW		 819 cmd = __ipa_reply(iob);
820 if (cmd) {
d19b93f4 821 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 822 if (!cmd)
823 goto out;
824 if (IS_OSN(card) && card->osn_info.assist_cb &&
825 cmd->hdr.command != IPA_CMD_STARTLAN) {
826 card->osn_info.assist_cb(card->dev, cmd);
827 goto out;
828 }
4a71df50
FB		 829 }
830
0951c6ba 831 /* match against pending cmd requests */
4a71df50 832 spin_lock_irqsave(&card->lock, flags);
308946b0 833 list_for_each_entry(tmp, &card->cmd_waiter_list, list) {
7f92316c 834 if (tmp->match && tmp->match(tmp, iob)) {
308946b0 835 request = tmp;
0951c6ba 836 /* take the object outside the lock */
308946b0 837 qeth_get_cmd(request);
0951c6ba 838 break;
4a71df50
FB		 839 }
840 }
841 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba 842
308946b0 843 if (!request)
0951c6ba
JW		 844 goto out;
845
308946b0 846 reply = &request->reply;
4b7ae122
JW		 847 if (!reply->callback) {
848 rc = 0;
072f7940
JW		 849 goto no_callback;
850 }
851
308946b0
JW		 852 spin_lock_irqsave(&request->lock, flags);
853 if (request->rc)
072f7940 854 /* Bail out when the requestor has already left: */
308946b0 855 rc = request->rc;
7c5f8ffb
JW		 856 else
857 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
858 (unsigned long)iob);
308946b0 859 spin_unlock_irqrestore(&request->lock, flags);
0951c6ba 860
072f7940 861no_callback:
61e04465 862 if (rc <= 0)
308946b0
JW		 863 qeth_notify_cmd(request, rc);
864 qeth_put_cmd(request);
4a71df50
FB		 865out:
866 memcpy(&card->seqno.pdu_hdr_ack,
867 QETH_PDU_HEADER_SEQ_NO(iob->data),
868 QETH_SEQ_NO_LENGTH);
c3b2218d 869 qeth_put_cmd(iob);
7cbc9e8f 870 __qeth_issue_next_read(card);
4a71df50
FB		 871}
872
4a71df50
FB		 873static int qeth_set_thread_start_bit(struct qeth_card *card,
874 unsigned long thread)
875{
876 unsigned long flags;
877
878 spin_lock_irqsave(&card->thread_mask_lock, flags);
879 if (!(card->thread_allowed_mask & thread) ||
880 (card->thread_start_mask & thread)) {
881 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
882 return -EPERM;
883 }
884 card->thread_start_mask |= thread;
885 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
886 return 0;
887}
888
91003f35
JW		 889static void qeth_clear_thread_start_bit(struct qeth_card *card,
890 unsigned long thread)
4a71df50
FB		 891{
892 unsigned long flags;
893
894 spin_lock_irqsave(&card->thread_mask_lock, flags);
895 card->thread_start_mask &= ~thread;
896 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
897 wake_up(&card->wait_q);
898}
4a71df50 899
91003f35
JW		 900static void qeth_clear_thread_running_bit(struct qeth_card *card,
901 unsigned long thread)
4a71df50
FB		 902{
903 unsigned long flags;
904
905 spin_lock_irqsave(&card->thread_mask_lock, flags);
906 card->thread_running_mask &= ~thread;
907 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 908 wake_up_all(&card->wait_q);
4a71df50 909}
4a71df50
FB		 910
911static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
912{
913 unsigned long flags;
914 int rc = 0;
915
916 spin_lock_irqsave(&card->thread_mask_lock, flags);
917 if (card->thread_start_mask & thread) {
918 if ((card->thread_allowed_mask & thread) &&
919 !(card->thread_running_mask & thread)) {
920 rc = 1;
921 card->thread_start_mask &= ~thread;
922 card->thread_running_mask |= thread;
923 } else
924 rc = -EPERM;
925 }
926 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
927 return rc;
928}
929
91003f35 930static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
4a71df50
FB		 931{
932 int rc = 0;
933
934 wait_event(card->wait_q,
935 (rc = __qeth_do_run_thread(card, thread)) >= 0);
936 return rc;
937}
4a71df50
FB		 938
939void qeth_schedule_recovery(struct qeth_card *card)
940{
847a50fd 941 QETH_CARD_TEXT(card, 2, "startrec");
4a71df50
FB		 942 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
943 schedule_work(&card->kernel_thread_starter);
944}
4a71df50 945
8d908eb0
JW		 946static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
947 struct irb *irb)
4a71df50
FB		 948{
949 int dstat, cstat;
950 char *sense;
951
952 sense = (char *) irb->ecw;
23d805b6
PO		 953 cstat = irb->scsw.cmd.cstat;
954 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 955
956 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
957 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
958 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 959 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 960 dev_warn(&cdev->dev, "The qeth device driver "
961 "failed to recover an error on the device\n");
e19e5be8
JW		 962 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
963 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 964 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
965 16, 1, irb, 64, 1);
2f3c269d 966 return -EIO;
4a71df50
FB		 967 }
968
969 if (dstat & DEV_STAT_UNIT_CHECK) {
970 if (sense[SENSE_RESETTING_EVENT_BYTE] &
971 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 972 QETH_CARD_TEXT(card, 2, "REVIND");
2f3c269d 973 return -EIO;
4a71df50
FB		 974 }
975 if (sense[SENSE_COMMAND_REJECT_BYTE] &
976 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 977 QETH_CARD_TEXT(card, 2, "CMDREJi");
2f3c269d 978 return -EIO;
4a71df50
FB		 979 }
980 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 981 QETH_CARD_TEXT(card, 2, "AFFE");
2f3c269d 982 return -EIO;
4a71df50
FB		 983 }
984 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 985 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 986 return 0;
987 }
847a50fd 988 QETH_CARD_TEXT(card, 2, "DGENCHK");
2f3c269d 989 return -EIO;
4a71df50
FB		 990 }
991 return 0;
992}
993
54daaca7 994static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 995 struct irb *irb)
4a71df50 996{
8d908eb0 997 if (!IS_ERR(irb))
4a71df50
FB		 998 return 0;
999
1000 switch (PTR_ERR(irb)) {
1001 case -EIO:
e19e5be8
JW		 1002 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1003 CCW_DEVID(cdev));
847a50fd
CO		 1004 QETH_CARD_TEXT(card, 2, "ckirberr");
1005 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 1006 return -EIO;
4a71df50 1007 case -ETIMEDOUT:
74eacdb9
FB		 1008 dev_warn(&cdev->dev, "A hardware operation timed out"
1009 " on the device\n");
847a50fd
CO		 1010 QETH_CARD_TEXT(card, 2, "ckirberr");
1011 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 1012 return -ETIMEDOUT;
4a71df50 1013 default:
e19e5be8
JW		 1014 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1015 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 1016 QETH_CARD_TEXT(card, 2, "ckirberr");
1017 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 1018 return PTR_ERR(irb);
4a71df50 1019 }
4a71df50
FB		 1020}
1021
1022static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1023 struct irb *irb)
1024{
1025 int rc;
1026 int cstat, dstat;
db71bbbd 1027 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1028 struct ccwgroup_device *gdev;
4a71df50
FB		 1029 struct qeth_channel *channel;
1030 struct qeth_card *card;
4a71df50 1031
8d908eb0
JW		 1032 /* while we hold the ccwdev lock, this stays valid: */
1033 gdev = dev_get_drvdata(&cdev->dev);
1034 card = dev_get_drvdata(&gdev->dev);
4a71df50 1035
847a50fd
CO		 1036 QETH_CARD_TEXT(card, 5, "irq");
1037
4a71df50
FB		 1038 if (card->read.ccwdev == cdev) {
1039 channel = &card->read;
847a50fd 1040 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1041 } else if (card->write.ccwdev == cdev) {
1042 channel = &card->write;
847a50fd 1043 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1044 } else {
1045 channel = &card->data;
847a50fd 1046 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1047 }
db71bbbd 1048
f9e50b02
JW		 1049 if (intparm == 0) {
1050 QETH_CARD_TEXT(card, 5, "irqunsol");
1051 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1052 QETH_CARD_TEXT(card, 5, "irqunexp");
1053
1054 dev_err(&cdev->dev,
1055 "Received IRQ with intparm %lx, expected %px\n",
1056 intparm, channel->active_cmd);
1057 if (channel->active_cmd)
1058 qeth_cancel_cmd(channel->active_cmd, -EIO);
1059 } else {
1060 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1061 }
1062
1063 channel->active_cmd = NULL;
7359393f 1064 qeth_unlock_channel(card, channel);
db71bbbd 1065
2066e1db 1066 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1067 if (rc) {
db71bbbd
JW		 1068 /* IO was terminated, free its resources. */
1069 if (iob)
54daaca7 1070 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1071 return;
1072 }
1073
7359393f 1074 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
4a71df50 1075 channel->state = CH_STATE_STOPPED;
7359393f
JW		 1076 wake_up(&card->wait_q);
1077 }
4a71df50 1078
7359393f 1079 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
4a71df50 1080 channel->state = CH_STATE_HALTED;
7359393f
JW		 1081 wake_up(&card->wait_q);
1082 }
4a71df50 1083
f9e50b02
JW		 1084 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1085 SCSW_FCTL_HALT_FUNC))) {
1086 qeth_cancel_cmd(iob, -ECANCELED);
1087 iob = NULL;
4a71df50 1088 }
db71bbbd
JW		 1089
1090 cstat = irb->scsw.cmd.cstat;
1091 dstat = irb->scsw.cmd.dstat;
1092
4a71df50
FB		 1093 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1094 (dstat & DEV_STAT_UNIT_CHECK) ||
1095 (cstat)) {
1096 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1097 dev_warn(&channel->ccwdev->dev,
1098 "The qeth device driver failed to recover "
1099 "an error on the device\n");
e19e5be8
JW		 1100 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1101 CCW_DEVID(channel->ccwdev), cstat,
1102 dstat);
4a71df50
FB		 1103 print_hex_dump(KERN_WARNING, "qeth: irb ",
1104 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1105 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1106 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1107 }
2066e1db 1108
8d908eb0 1109 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1110 if (rc) {
a6c3d939 1111 card->read_or_write_problem = 1;
5065b2dd 1112 if (iob)
54daaca7 1113 qeth_cancel_cmd(iob, rc);
28a7e4c9 1114 qeth_clear_ipacmd_list(card);
4a71df50 1115 qeth_schedule_recovery(card);
7359393f 1116 return;
4a71df50
FB		 1117 }
1118 }
1119
12fc286f
JW		 1120 if (iob) {
1121 /* sanity check: */
1122 if (irb->scsw.cmd.count > iob->length) {
1123 qeth_cancel_cmd(iob, -EIO);
7359393f 1124 return;
12fc286f
JW		 1125 }
1126 if (iob->callback)
1127 iob->callback(card, iob,
1128 iob->length - irb->scsw.cmd.count);
1129 }
4a71df50
FB		 1130}
1131
b3332930 1132static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1133 struct qeth_qdio_out_buffer *buf,
b3332930 1134 enum iucv_tx_notify notification)
4a71df50 1135{
4a71df50
FB		 1136 struct sk_buff *skb;
1137
dc149e37 1138 skb_queue_walk(&buf->skb_list, skb) {
b3332930
FB		 1139 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1140 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
6a3123d0
JW		 1141 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1142 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
b3332930 1143 }
b3332930
FB		 1144}
1145
85e537d8
JW		 1146static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1147 int budget)
b3332930 1148{
eeac0e20 1149 struct qeth_qdio_out_q *queue = buf->q;
104b4859
JW		 1150 struct sk_buff *skb;
1151
72861ae7 1152 /* release may never happen from within CQ tasklet scope */
18af5c17 1153 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
4a71df50 1154
6a3123d0 1155 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
eeac0e20
JW		 1156 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR);
1157
1158 /* Empty buffer? */
1159 if (buf->next_element_to_fill == 0)
1160 return;
1161
1162 QETH_TXQ_STAT_INC(queue, bufs);
1163 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1164 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1165 unsigned int bytes = qdisc_pkt_len(skb);
1166 bool is_tso = skb_is_gso(skb);
1167 unsigned int packets;
1168
1169 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1170 if (error) {
1171 QETH_TXQ_STAT_ADD(queue, tx_errors, packets);
1172 } else {
1173 QETH_TXQ_STAT_ADD(queue, tx_packets, packets);
1174 QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes);
1175 if (skb->ip_summed == CHECKSUM_PARTIAL)
1176 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1177 if (skb_is_nonlinear(skb))
1178 QETH_TXQ_STAT_INC(queue, skbs_sg);
1179 if (is_tso) {
1180 QETH_TXQ_STAT_INC(queue, skbs_tso);
1181 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1182 }
1183 }
6a3123d0 1184
85e537d8 1185 napi_consume_skb(skb, budget);
eeac0e20 1186 }
b3332930
FB		 1187}
1188
1189static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1190 struct qeth_qdio_out_buffer *buf,
85e537d8 1191 bool error, int budget)
b3332930
FB		 1192{
1193 int i;
1194
1195 /* is PCI flag set on buffer? */
1196 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1197 atomic_dec(&queue->set_pci_flags_count);
1198
85e537d8 1199 qeth_tx_complete_buf(buf, error, budget);
3b346c18 1200
4e26c5fe 1201 for (i = 0; i < queue->max_elements; ++i) {
2db01da8
JW		 1202 void *data = phys_to_virt(buf->buffer->element[i].addr);
1203
1204 if (data && buf->is_header[i])
1205 kmem_cache_free(qeth_core_header_cache, data);
683d718a 1206 buf->is_header[i] = 0;
4a71df50 1207 }
3b346c18 1208
4e26c5fe 1209 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1210 buf->next_element_to_fill = 0;
96bd6c94 1211 buf->bytes = 0;
3b346c18 1212 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1213}
1214
41c47da3 1215static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1216{
1217 int j;
1218
1219 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1220 if (!q->bufs[j])
1221 continue;
72861ae7 1222 qeth_cleanup_handled_pending(q, j, 1);
85e537d8 1223 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d
EL		 1224 if (free) {
1225 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1226 q->bufs[j] = NULL;
1227 }
1228 }
4a71df50
FB		 1229}
1230
41c47da3 1231void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1232{
0da9581d 1233 int i;
4a71df50 1234
847a50fd 1235 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1236 /* clear outbound buffers to free skbs */
0da9581d 1237 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1238 if (card->qdio.out_qs[i])
1239 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1240 }
4a71df50 1241}
41c47da3 1242EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
4a71df50 1243
bd966839 1244static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1245{
73dc2daf 1246 unsigned int count = single ? 1 : card->dev->num_tx_queues;
bd966839 1247 int rc;
725b9c04 1248
73dc2daf 1249 rtnl_lock();
bd966839 1250 rc = netif_set_real_num_tx_queues(card->dev, count);
73dc2daf 1251 rtnl_unlock();
725b9c04 1252
bd966839
JW		 1253 if (rc)
1254 return rc;
1255
73dc2daf 1256 if (card->qdio.no_out_queues == count)
bd966839 1257 return 0;
725b9c04 1258
73dc2daf 1259 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1260 qeth_free_qdio_queues(card);
73dc2daf
JW		 1261
1262 if (count == 1)
1263 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1264
73dc2daf 1265 card->qdio.no_out_queues = count;
bd966839 1266 return 0;
725b9c04
SO		 1267}
1268
a4cdc9ba 1269static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1270{
4a71df50 1271 struct ccw_device *ccwdev;
ded27d8d 1272 struct channel_path_desc_fmt0 *chp_dsc;
bd966839 1273 int rc = 0;
4a71df50 1274
57a688aa 1275 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1276
1277 ccwdev = card->data.ccwdev;
725b9c04
SO		 1278 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1279 if (!chp_dsc)
a4cdc9ba 1280 return -ENOMEM;
725b9c04
SO		 1281
1282 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1283
73dc2daf
JW		 1284 if (IS_OSD(card) || IS_OSX(card))
1285 /* CHPP field bit 6 == 1 -> single queue */
bd966839 1286 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1287
725b9c04 1288 kfree(chp_dsc);
57a688aa
JW		 1289 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1290 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bd966839 1291 return rc;
4a71df50
FB		 1292}
1293
1294static void qeth_init_qdio_info(struct qeth_card *card)
1295{
57a688aa 1296 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1297 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1298 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1299 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1300
4a71df50 1301 /* inbound */
ed2e93ef 1302 card->qdio.no_in_queues = 1;
4a71df50 1303 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1304 if (IS_IQD(card))
dcf4ae2d
FB		 1305 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1306 else
1307 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1308 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1309 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1310 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1311}
1312
95f4d8b7 1313static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1314{
1315 card->options.route4.type = NO_ROUTER;
1316 card->options.route6.type = NO_ROUTER;
4a71df50 1317 card->options.rx_sg_cb = QETH_RX_SG_CB;
d64ecc22 1318 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1319 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1320 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1321}
1322
1323static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1324{
1325 unsigned long flags;
1326 int rc = 0;
1327
1328 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1329 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1330 (u8) card->thread_start_mask,
1331 (u8) card->thread_allowed_mask,
1332 (u8) card->thread_running_mask);
1333 rc = (card->thread_start_mask & thread);
1334 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1335 return rc;
1336}
1337
91003f35 1338static int qeth_do_reset(void *data);
4a71df50
FB		 1339static void qeth_start_kernel_thread(struct work_struct *work)
1340{
3f36b890 1341 struct task_struct *ts;
4a71df50
FB		 1342 struct qeth_card *card = container_of(work, struct qeth_card,
1343 kernel_thread_starter);
847a50fd 1344 QETH_CARD_TEXT(card , 2, "strthrd");
4a71df50
FB		 1345
1346 if (card->read.state != CH_STATE_UP &&
1347 card->write.state != CH_STATE_UP)
1348 return;
3f36b890 1349 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
91003f35 1350 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
3f36b890
FB		 1351 if (IS_ERR(ts)) {
1352 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1353 qeth_clear_thread_running_bit(card,
1354 QETH_RECOVER_THREAD);
1355 }
1356 }
4a71df50
FB		 1357}
1358
bca51650 1359static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1360static void qeth_setup_card(struct qeth_card *card)
4a71df50 1361{
57a688aa 1362 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1363
95f4d8b7 1364 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1365 card->state = CARD_STATE_DOWN;
4a71df50 1366 spin_lock_init(&card->lock);
4a71df50 1367 spin_lock_init(&card->thread_mask_lock);
c4949f07 1368 mutex_init(&card->conf_mutex);
9dc48ccc 1369 mutex_init(&card->discipline_mutex);
4a71df50 1370 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1371 INIT_LIST_HEAD(&card->cmd_waiter_list);
1372 init_waitqueue_head(&card->wait_q);
95f4d8b7 1373 qeth_set_initial_options(card);
4a71df50
FB		 1374 /* IP address takeover */
1375 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1376 qeth_init_qdio_info(card);
b3332930 1377 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0f54761d 1378 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
4a71df50
FB		 1379}
1380
6bcac508
MS		 1381static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1382{
1383 struct qeth_card *card = container_of(slr, struct qeth_card,
1384 qeth_service_level);
0d788c7d
KDW		 1385 if (card->info.mcl_level[0])
1386 seq_printf(m, "qeth: %s firmware level %s\n",
1387 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1388}
1389
121ca39a 1390static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1391{
1392 struct qeth_card *card;
1393
d11ba0c4 1394 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1395 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1396 if (!card)
76b11f8e 1397 goto out;
d11ba0c4 1398 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1399
1400 card->gdev = gdev;
a2eb0ad5 1401 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1402 CARD_RDEV(card) = gdev->cdev[0];
1403 CARD_WDEV(card) = gdev->cdev[1];
1404 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1405
7686e4b6
JW		 1406 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1407 dev_name(&gdev->dev));
c0a2e4d1
JW		 1408 if (!card->event_wq)
1409 goto out_wq;
d9b9f40b
JW		 1410
1411 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1412 if (!card->read_cmd)
1413 goto out_read_cmd;
c3b2218d 1414
6bcac508
MS		 1415 card->qeth_service_level.seq_print = qeth_core_sl_print;
1416 register_service_level(&card->qeth_service_level);
4a71df50 1417 return card;
76b11f8e 1418
d9b9f40b 1419out_read_cmd:
c0a2e4d1
JW		 1420 destroy_workqueue(card->event_wq);
1421out_wq:
a2eb0ad5 1422 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1423 kfree(card);
1424out:
1425 return NULL;
4a71df50
FB		 1426}
1427
8d908eb0
JW		 1428static int qeth_clear_channel(struct qeth_card *card,
1429 struct qeth_channel *channel)
4a71df50 1430{
4a71df50
FB		 1431 int rc;
1432
847a50fd 1433 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1434 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1435 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1436 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1437
1438 if (rc)
1439 return rc;
1440 rc = wait_event_interruptible_timeout(card->wait_q,
1441 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1442 if (rc == -ERESTARTSYS)
1443 return rc;
1444 if (channel->state != CH_STATE_STOPPED)
1445 return -ETIME;
1446 channel->state = CH_STATE_DOWN;
1447 return 0;
1448}
1449
8d908eb0
JW		 1450static int qeth_halt_channel(struct qeth_card *card,
1451 struct qeth_channel *channel)
4a71df50 1452{
4a71df50
FB		 1453 int rc;
1454
847a50fd 1455 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1456 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1457 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1458 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1459
1460 if (rc)
1461 return rc;
1462 rc = wait_event_interruptible_timeout(card->wait_q,
1463 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1464 if (rc == -ERESTARTSYS)
1465 return rc;
1466 if (channel->state != CH_STATE_HALTED)
1467 return -ETIME;
1468 return 0;
1469}
1470
f9e50b02
JW		 1471int qeth_stop_channel(struct qeth_channel *channel)
1472{
1473 struct ccw_device *cdev = channel->ccwdev;
1474 int rc;
1475
1476 rc = ccw_device_set_offline(cdev);
1477
1478 spin_lock_irq(get_ccwdev_lock(cdev));
1479 if (channel->active_cmd) {
1480 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1481 channel->active_cmd);
1482 channel->active_cmd = NULL;
1483 }
871602b1 1484 cdev->handler = NULL;
f9e50b02
JW		 1485 spin_unlock_irq(get_ccwdev_lock(cdev));
1486
1487 return rc;
1488}
1489EXPORT_SYMBOL_GPL(qeth_stop_channel);
1490
871602b1
JW		 1491static int qeth_start_channel(struct qeth_channel *channel)
1492{
1493 struct ccw_device *cdev = channel->ccwdev;
1494 int rc;
1495
1496 channel->state = CH_STATE_DOWN;
1497 atomic_set(&channel->irq_pending, 0);
1498
1499 spin_lock_irq(get_ccwdev_lock(cdev));
1500 cdev->handler = qeth_irq;
1501 spin_unlock_irq(get_ccwdev_lock(cdev));
1502
1503 rc = ccw_device_set_online(cdev);
1504 if (rc)
1505 goto err;
1506
1507 return 0;
1508
1509err:
1510 spin_lock_irq(get_ccwdev_lock(cdev));
1511 cdev->handler = NULL;
1512 spin_unlock_irq(get_ccwdev_lock(cdev));
1513 return rc;
1514}
1515
4a71df50
FB		 1516static int qeth_halt_channels(struct qeth_card *card)
1517{
1518 int rc1 = 0, rc2 = 0, rc3 = 0;
1519
847a50fd 1520 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1521 rc1 = qeth_halt_channel(card, &card->read);
1522 rc2 = qeth_halt_channel(card, &card->write);
1523 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1524 if (rc1)
1525 return rc1;
1526 if (rc2)
1527 return rc2;
1528 return rc3;
1529}
1530
1531static int qeth_clear_channels(struct qeth_card *card)
1532{
1533 int rc1 = 0, rc2 = 0, rc3 = 0;
1534
847a50fd 1535 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1536 rc1 = qeth_clear_channel(card, &card->read);
1537 rc2 = qeth_clear_channel(card, &card->write);
1538 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1539 if (rc1)
1540 return rc1;
1541 if (rc2)
1542 return rc2;
1543 return rc3;
1544}
1545
1546static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1547{
1548 int rc = 0;
1549
847a50fd 1550 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1551
1552 if (halt)
1553 rc = qeth_halt_channels(card);
1554 if (rc)
1555 return rc;
1556 return qeth_clear_channels(card);
1557}
1558
1559int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1560{
1561 int rc = 0;
1562
847a50fd 1563 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1564 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1565 QETH_QDIO_CLEANING)) {
1566 case QETH_QDIO_ESTABLISHED:
379ac99e 1567 if (IS_IQD(card))
cc961d40 1568 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1569 QDIO_FLAG_CLEANUP_USING_HALT);
1570 else
cc961d40 1571 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1572 QDIO_FLAG_CLEANUP_USING_CLEAR);
1573 if (rc)
847a50fd 1574 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1575 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1576 break;
1577 case QETH_QDIO_CLEANING:
1578 return rc;
1579 default:
1580 break;
1581 }
1582 rc = qeth_clear_halt_card(card, use_halt);
1583 if (rc)
847a50fd 1584 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1585 return rc;
1586}
1587EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1588
615dff22
JW		 1589static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1590{
1591 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1592 struct diag26c_vnic_resp *response = NULL;
1593 struct diag26c_vnic_req *request = NULL;
1594 struct ccw_dev_id id;
1595 char userid[80];
1596 int rc = 0;
1597
57a688aa 1598 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1599
1600 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1601 if (rc)
1602 goto out;
1603
1604 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1605 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1606 if (!request || !response) {
1607 rc = -ENOMEM;
1608 goto out;
1609 }
1610
1611 ccw_device_get_id(CARD_RDEV(card), &id);
1612 request->resp_buf_len = sizeof(*response);
1613 request->resp_version = DIAG26C_VERSION6_VM65918;
1614 request->req_format = DIAG26C_VNIC_INFO;
1615 ASCEBC(userid, 8);
1616 memcpy(&request->sys_name, userid, 8);
1617 request->devno = id.devno;
1618
1619 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1620 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1621 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1622 if (rc)
1623 goto out;
1624 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1625
1626 if (request->resp_buf_len < sizeof(*response) ||
1627 response->version != request->resp_version) {
1628 rc = -EIO;
1629 goto out;
1630 }
1631
1632 if (response->protocol == VNIC_INFO_PROT_L2)
1633 disc = QETH_DISCIPLINE_LAYER2;
1634 else if (response->protocol == VNIC_INFO_PROT_L3)
1635 disc = QETH_DISCIPLINE_LAYER3;
1636
1637out:
1638 kfree(response);
1639 kfree(request);
1640 if (rc)
57a688aa 1641 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1642 return disc;
1643}
1644
c70eb09d
JW		 1645/* Determine whether the device requires a specific layer discipline */
1646static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1647{
615dff22
JW		 1648 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1649
379ac99e 1650 if (IS_OSM(card) || IS_OSN(card))
615dff22 1651 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1652 else if (IS_VM_NIC(card))
1653 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1654 qeth_vm_detect_layer(card);
615dff22
JW		 1655
1656 switch (disc) {
1657 case QETH_DISCIPLINE_LAYER2:
57a688aa 1658 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1659 break;
1660 case QETH_DISCIPLINE_LAYER3:
57a688aa 1661 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1662 break;
1663 default:
57a688aa 1664 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1665 }
1666
615dff22 1667 return disc;
c70eb09d
JW		 1668}
1669
09ac887f 1670static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1671{
57a688aa 1672 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1673
09ac887f 1674 if (card->info.use_v1_blkt) {
a60389ab
EL		 1675 card->info.blkt.time_total = 0;
1676 card->info.blkt.inter_packet = 0;
1677 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1678 } else {
1679 card->info.blkt.time_total = 250;
1680 card->info.blkt.inter_packet = 5;
1681 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1682 }
4a71df50
FB		 1683}
1684
1685static void qeth_init_tokens(struct qeth_card *card)
1686{
1687 card->token.issuer_rm_w = 0x00010103UL;
1688 card->token.cm_filter_w = 0x00010108UL;
1689 card->token.cm_connection_w = 0x0001010aUL;
1690 card->token.ulp_filter_w = 0x0001010bUL;
1691 card->token.ulp_connection_w = 0x0001010dUL;
1692}
1693
1694static void qeth_init_func_level(struct qeth_card *card)
1695{
5113fec0
UB		 1696 switch (card->info.type) {
1697 case QETH_CARD_TYPE_IQD:
6298263a 1698 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1699 break;
1700 case QETH_CARD_TYPE_OSD:
0132951e 1701 case QETH_CARD_TYPE_OSN:
5113fec0
UB		 1702 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1703 break;
1704 default:
1705 break;
4a71df50
FB		 1706 }
1707}
1708
48ce6f89 1709static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1710 struct qeth_cmd_buffer *iob)
48ce6f89 1711{
48ce6f89
JW		 1712 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1713 QETH_SEQ_NO_LENGTH);
1714 if (iob->channel == &card->write)
1715 card->seqno.trans_hdr++;
1716}
1717
4a71df50
FB		 1718static int qeth_peer_func_level(int level)
1719{
1720 if ((level & 0xff) == 8)
1721 return (level & 0xff) + 0x400;
1722 if (((level >> 8) & 3) == 1)
1723 return (level & 0xff) + 0x200;
1724 return level;
1725}
1726
48ce6f89 1727static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1728 struct qeth_cmd_buffer *iob)
4a71df50 1729{
c3b2218d 1730 qeth_idx_finalize_cmd(card, iob);
4a71df50 1731
4a71df50
FB		 1732 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1733 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1734 card->seqno.pdu_hdr++;
1735 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1736 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1737
48ce6f89 1738 iob->callback = qeth_release_buffer_cb;
4a71df50 1739}
4a71df50 1740
7f92316c
JW		 1741static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1742 struct qeth_cmd_buffer *reply)
1743{
1744 /* MPC cmds are issued strictly in sequence. */
1745 return !IS_IPA(reply->data);
1746}
1747
f19f8fd2
JW		 1748static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1749 void *data,
1750 unsigned int data_length)
1273a800
JW		 1751{
1752 struct qeth_cmd_buffer *iob;
1753
f19f8fd2
JW		 1754 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1755 if (!iob)
1756 return NULL;
1757
1758 memcpy(iob->data, data, data_length);
1759 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1760 iob->data);
1761 iob->finalize = qeth_mpc_finalize_cmd;
7f92316c 1762 iob->match = qeth_mpc_match_reply;
1273a800
JW		 1763 return iob;
1764}
1765
efbbc1d5
EC		 1766/**
1767 * qeth_send_control_data() - send control command to the card
1768 * @card: qeth_card structure pointer
efbbc1d5
EC		 1769 * @iob: qeth_cmd_buffer pointer
1770 * @reply_cb: callback function pointer
1771 * @cb_card: pointer to the qeth_card structure
1772 * @cb_reply: pointer to the qeth_reply structure
1773 * @cb_cmd: pointer to the original iob for non-IPA
1774 * commands, or to the qeth_ipa_cmd structure
1775 * for the IPA commands.
1776 * @reply_param: private pointer passed to the callback
1777 *
efbbc1d5
EC		 1778 * Callback function gets called one or more times, with cb_cmd
1779 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 1780 * function must return
1781 * > 0 if more reply blocks are expected,
1782 * 0 if the last or only reply block is received, and
1783 * < 0 on error.
1784 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 1785 * field 'param' of the structure qeth_reply.
1786 */
1787
c3b2218d 1788static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 1789 struct qeth_cmd_buffer *iob,
1790 int (*reply_cb)(struct qeth_card *cb_card,
1791 struct qeth_reply *cb_reply,
1792 unsigned long cb_cmd),
1793 void *reply_param)
4a71df50 1794{
750b1625 1795 struct qeth_channel *channel = iob->channel;
308946b0 1796 struct qeth_reply *reply = &iob->reply;
782e4a79 1797 long timeout = iob->timeout;
4a71df50 1798 int rc;
4a71df50 1799
847a50fd 1800 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 1801
4a71df50
FB		 1802 reply->callback = reply_cb;
1803 reply->param = reply_param;
d22ffb5a 1804
782e4a79
JW		 1805 timeout = wait_event_interruptible_timeout(card->wait_q,
1806 qeth_trylock_channel(channel),
1807 timeout);
1808 if (timeout <= 0) {
c3b2218d 1809 qeth_put_cmd(iob);
782e4a79
JW		 1810 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1811 }
4a71df50 1812
2066e1db 1813 if (iob->finalize)
c3b2218d
JW		 1814 iob->finalize(card, iob);
1815 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 1816
308946b0 1817 qeth_enqueue_cmd(card, iob);
1c5b2216 1818
32e85a0d
JW		 1819 /* This pairs with iob->callback, and keeps the iob alive after IO: */
1820 qeth_get_cmd(iob);
1821
847a50fd 1822 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 1823 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 1824 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 1825 (addr_t) iob, 0, 0, timeout);
f9e50b02
JW		 1826 if (!rc)
1827 channel->active_cmd = iob;
ed47155b 1828 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1829 if (rc) {
e19e5be8
JW		 1830 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1831 CARD_DEVID(card), rc);
847a50fd 1832 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 1833 qeth_dequeue_cmd(card, iob);
c3b2218d 1834 qeth_put_cmd(iob);
7359393f 1835 qeth_unlock_channel(card, channel);
32e85a0d 1836 goto out;
4a71df50 1837 }
5b54e16f 1838
308946b0 1839 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 1840 timeout);
1841 if (timeout <= 0)
1842 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 1843
308946b0 1844 qeth_dequeue_cmd(card, iob);
072f7940
JW		 1845
1846 if (reply_cb) {
1847 /* Wait until the callback for a late reply has completed: */
308946b0 1848 spin_lock_irq(&iob->lock);
072f7940
JW		 1849 if (rc)
1850 /* Zap any callback that's still pending: */
308946b0
JW		 1851 iob->rc = rc;
1852 spin_unlock_irq(&iob->lock);
072f7940
JW		 1853 }
1854
782e4a79 1855 if (!rc)
308946b0 1856 rc = iob->rc;
32e85a0d
JW		 1857
1858out:
32e85a0d 1859 qeth_put_cmd(iob);
5b54e16f 1860 return rc;
4a71df50 1861}
4a71df50 1862
afc1f67b
JW		 1863struct qeth_node_desc {
1864 struct node_descriptor nd1;
1865 struct node_descriptor nd2;
1866 struct node_descriptor nd3;
1867};
1868
2066e1db 1869static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 1870 struct qeth_cmd_buffer *iob,
1871 unsigned int data_length)
2066e1db 1872{
afc1f67b 1873 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 1874 int rc = 0;
afc1f67b 1875 u8 *tag;
2066e1db
JW		 1876
1877 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 1878
1879 if (data_length < sizeof(*nd)) {
1880 rc = -EINVAL;
1881 goto out;
1882 }
1883
afc1f67b
JW		 1884 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
1885 nd->nd1.plant[1] == _ascebc['M'];
1886 tag = (u8 *)&nd->nd1.tag;
1887 card->info.chpid = tag[0];
1888 card->info.unit_addr2 = tag[1];
1889
1890 tag = (u8 *)&nd->nd2.tag;
1891 card->info.cula = tag[1];
1892
1893 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
1894 nd->nd3.model[1] == 0xF0 &&
1895 nd->nd3.model[2] >= 0xF1 &&
1896 nd->nd3.model[2] <= 0xF4;
2066e1db 1897
12fc286f 1898out:
308946b0 1899 qeth_notify_cmd(iob, rc);
c3b2218d 1900 qeth_put_cmd(iob);
2066e1db
JW		 1901}
1902
1903static int qeth_read_conf_data(struct qeth_card *card)
1904{
1905 struct qeth_channel *channel = &card->data;
1906 struct qeth_cmd_buffer *iob;
1907 struct ciw *ciw;
1908
1909 /* scan for RCD command in extended SenseID data */
1910 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1911 if (!ciw || ciw->cmd == 0)
1912 return -EOPNOTSUPP;
afc1f67b
JW		 1913 if (ciw->count < sizeof(struct qeth_node_desc))
1914 return -EINVAL;
2066e1db
JW		 1915
1916 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1917 if (!iob)
1918 return -ENOMEM;
1919
1920 iob->callback = qeth_read_conf_data_cb;
1921 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1922 iob->data);
1923
c3b2218d 1924 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 1925}
1926
2e873d10
JW		 1927static int qeth_idx_check_activate_response(struct qeth_card *card,
1928 struct qeth_channel *channel,
1929 struct qeth_cmd_buffer *iob)
1930{
1931 int rc;
1932
1933 rc = qeth_check_idx_response(card, iob->data);
1934 if (rc)
1935 return rc;
1936
1937 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1938 return 0;
1939
1940 /* negative reply: */
57a688aa
JW		 1941 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1942 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 1943
1944 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1945 case QETH_IDX_ACT_ERR_EXCL:
1946 dev_err(&channel->ccwdev->dev,
1947 "The adapter is used exclusively by another host\n");
1948 return -EBUSY;
1949 case QETH_IDX_ACT_ERR_AUTH:
1950 case QETH_IDX_ACT_ERR_AUTH_USER:
1951 dev_err(&channel->ccwdev->dev,
1952 "Setting the device online failed because of insufficient authorization\n");
1953 return -EPERM;
1954 default:
1955 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1956 CCW_DEVID(channel->ccwdev));
1957 return -EIO;
1958 }
1959}
1960
f3b783b1 1961static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
12fc286f
JW		 1962 struct qeth_cmd_buffer *iob,
1963 unsigned int data_length)
2e873d10 1964{
fcda7f73 1965 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1966 u16 peer_level;
1967 int rc;
1968
57a688aa 1969 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 1970
1971 rc = qeth_idx_check_activate_response(card, channel, iob);
1972 if (rc)
1973 goto out;
1974
1975 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1976 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1977 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1978 CCW_DEVID(channel->ccwdev),
1979 card->info.func_level, peer_level);
1980 rc = -EINVAL;
1981 goto out;
1982 }
1983
1984 memcpy(&card->token.issuer_rm_r,
1985 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1986 QETH_MPC_TOKEN_LENGTH);
1987 memcpy(&card->info.mcl_level[0],
1988 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1989
1990out:
308946b0 1991 qeth_notify_cmd(iob, rc);
c3b2218d 1992 qeth_put_cmd(iob);
2e873d10
JW		 1993}
1994
f3b783b1 1995static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 1996 struct qeth_cmd_buffer *iob,
1997 unsigned int data_length)
2e873d10 1998{
fcda7f73 1999 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2000 u16 peer_level;
2001 int rc;
2002
57a688aa 2003 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 2004
2005 rc = qeth_idx_check_activate_response(card, channel, iob);
2006 if (rc)
2007 goto out;
2008
2009 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2010 if ((peer_level & ~0x0100) !=
2011 qeth_peer_func_level(card->info.func_level)) {
2012 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2013 CCW_DEVID(channel->ccwdev),
2014 card->info.func_level, peer_level);
2015 rc = -EINVAL;
2016 }
2017
2018out:
308946b0 2019 qeth_notify_cmd(iob, rc);
c3b2218d 2020 qeth_put_cmd(iob);
2e873d10
JW		 2021}
2022
2e873d10
JW		 2023static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2024 struct qeth_cmd_buffer *iob)
2025{
2026 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2027 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 2028 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10
JW		 2029 struct ccw_dev_id dev_id;
2030
f3b783b1
JW		 2031 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2032 iob->data);
2033 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10
JW		 2034 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2035 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 2036
5fd3fcbb 2037 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 2038 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2039 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2040 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2041 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2042 &card->info.func_level, 2);
2043 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
2044 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2045}
2046
2047static int qeth_idx_activate_read_channel(struct qeth_card *card)
2048{
2049 struct qeth_channel *channel = &card->read;
2050 struct qeth_cmd_buffer *iob;
2051 int rc;
2052
57a688aa 2053 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2054
f3b783b1 2055 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2056 if (!iob)
2057 return -ENOMEM;
2058
2059 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2060 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2061 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 2062
c3b2218d 2063 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2064 if (rc)
2065 return rc;
2066
2e873d10
JW		 2067 channel->state = CH_STATE_UP;
2068 return 0;
2069}
2070
2071static int qeth_idx_activate_write_channel(struct qeth_card *card)
2072{
2073 struct qeth_channel *channel = &card->write;
2074 struct qeth_cmd_buffer *iob;
2075 int rc;
2076
57a688aa 2077 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2078
f3b783b1 2079 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2080 if (!iob)
2081 return -ENOMEM;
2082
2083 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2084 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2085 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2086
c3b2218d 2087 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2088 if (rc)
2089 return rc;
2090
2e873d10
JW		 2091 channel->state = CH_STATE_UP;
2092 return 0;
2093}
2094
4a71df50
FB		 2095static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2096 unsigned long data)
2097{
2098 struct qeth_cmd_buffer *iob;
2099
57a688aa 2100 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2101
2102 iob = (struct qeth_cmd_buffer *) data;
2103 memcpy(&card->token.cm_filter_r,
2104 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2105 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2106 return 0;
2107}
2108
2109static int qeth_cm_enable(struct qeth_card *card)
2110{
4a71df50
FB		 2111 struct qeth_cmd_buffer *iob;
2112
57a688aa 2113 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2114
f19f8fd2 2115 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2116 if (!iob)
2117 return -ENOMEM;
48ce6f89 2118
4a71df50
FB		 2119 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2120 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2121 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2122 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2123
c3b2218d 2124 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2125}
2126
2127static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2128 unsigned long data)
2129{
4a71df50
FB		 2130 struct qeth_cmd_buffer *iob;
2131
57a688aa 2132 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2133
2134 iob = (struct qeth_cmd_buffer *) data;
2135 memcpy(&card->token.cm_connection_r,
2136 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2137 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2138 return 0;
2139}
2140
2141static int qeth_cm_setup(struct qeth_card *card)
2142{
4a71df50
FB		 2143 struct qeth_cmd_buffer *iob;
2144
57a688aa 2145 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2146
f19f8fd2 2147 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2148 if (!iob)
2149 return -ENOMEM;
48ce6f89 2150
4a71df50
FB		 2151 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2152 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2153 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2154 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2155 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2156 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2157 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2158}
2159
8ce7a9e0 2160static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2161{
8ce7a9e0
JW		 2162 struct net_device *dev = card->dev;
2163 unsigned int new_mtu;
2164
2165 if (!max_mtu) {
2166 /* IQD needs accurate max MTU to set up its RX buffers: */
2167 if (IS_IQD(card))
2168 return -EINVAL;
2169 /* tolerate quirky HW: */
2170 max_mtu = ETH_MAX_MTU;
2171 }
2172
2173 rtnl_lock();
2174 if (IS_IQD(card)) {
2175 /* move any device with default MTU to new max MTU: */
2176 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2177
2178 /* adjust RX buffer size to new max MTU: */
2179 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2180 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2181 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2182 } else {
2183 if (dev->mtu)
2184 new_mtu = dev->mtu;
2185 /* default MTUs for first setup: */
4fda3354 2186 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2187 new_mtu = ETH_DATA_LEN;
2188 else
2189 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2190 }
8ce7a9e0
JW		 2191
2192 dev->max_mtu = max_mtu;
2193 dev->mtu = min(new_mtu, max_mtu);
2194 rtnl_unlock();
2195 return 0;
4a71df50
FB		 2196}
2197
cef6ff22 2198static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2199{
2200 switch (framesize) {
2201 case 0x4000:
2202 return 8192;
2203 case 0x6000:
2204 return 16384;
2205 case 0xa000:
2206 return 32768;
2207 case 0xffff:
2208 return 57344;
2209 default:
2210 return 0;
2211 }
2212}
2213
4a71df50
FB		 2214static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2215 unsigned long data)
2216{
4a71df50
FB		 2217 __u16 mtu, framesize;
2218 __u16 len;
2219 __u8 link_type;
2220 struct qeth_cmd_buffer *iob;
2221
57a688aa 2222 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2223
2224 iob = (struct qeth_cmd_buffer *) data;
2225 memcpy(&card->token.ulp_filter_r,
2226 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2227 QETH_MPC_TOKEN_LENGTH);
379ac99e 2228 if (IS_IQD(card)) {
4a71df50
FB		 2229 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2230 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2231 } else {
8ce7a9e0 2232 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2233 }
8ce7a9e0 2234 *(u16 *)reply->param = mtu;
4a71df50
FB		 2235
2236 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2237 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2238 memcpy(&link_type,
2239 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2240 card->info.link_type = link_type;
2241 } else
2242 card->info.link_type = 0;
57a688aa 2243 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2244 return 0;
2245}
2246
73657a3e
JW		 2247static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2248{
2249 if (IS_OSN(card))
2250 return QETH_PROT_OSN2;
4fda3354 2251 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
73657a3e
JW		 2252}
2253
4a71df50
FB		 2254static int qeth_ulp_enable(struct qeth_card *card)
2255{
73657a3e 2256 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2257 struct qeth_cmd_buffer *iob;
8ce7a9e0 2258 u16 max_mtu;
73657a3e 2259 int rc;
4a71df50 2260
57a688aa 2261 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2262
f19f8fd2 2263 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2264 if (!iob)
2265 return -ENOMEM;
4a71df50 2266
92d27209 2267 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2268 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2269 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2270 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2271 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2272 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2273 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2274 if (rc)
2275 return rc;
2276 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2277}
2278
2279static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2280 unsigned long data)
2281{
2282 struct qeth_cmd_buffer *iob;
2283
57a688aa 2284 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2285
2286 iob = (struct qeth_cmd_buffer *) data;
2287 memcpy(&card->token.ulp_connection_r,
2288 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2289 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2290 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2291 3)) {
57a688aa 2292 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2293 dev_err(&card->gdev->dev, "A connection could not be "
2294 "established because of an OLM limit\n");
4b7ae122 2295 return -EMLINK;
65a1f898 2296 }
7bf9bcff 2297 return 0;
4a71df50
FB		 2298}
2299
2300static int qeth_ulp_setup(struct qeth_card *card)
2301{
4a71df50
FB		 2302 __u16 temp;
2303 struct qeth_cmd_buffer *iob;
2304 struct ccw_dev_id dev_id;
2305
57a688aa 2306 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2307
f19f8fd2 2308 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2309 if (!iob)
2310 return -ENOMEM;
4a71df50
FB		 2311
2312 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2313 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2314 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2315 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2316 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2317 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2318
2319 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2320 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2321 temp = (card->info.cula << 8) + card->info.unit_addr2;
2322 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2323 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2324}
2325
0da9581d
EL		 2326static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2327{
0da9581d
EL		 2328 struct qeth_qdio_out_buffer *newbuf;
2329
0da9581d 2330 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
3b346c18
JW		 2331 if (!newbuf)
2332 return -ENOMEM;
2333
d445a4e2 2334 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2335 skb_queue_head_init(&newbuf->skb_list);
2336 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2337 newbuf->q = q;
0da9581d
EL		 2338 newbuf->next_pending = q->bufs[bidx];
2339 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2340 q->bufs[bidx] = newbuf;
3b346c18 2341 return 0;
0da9581d
EL		 2342}
2343
afa0c590 2344static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2345{
2346 if (!q)
2347 return;
2348
41c47da3 2349 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2350 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2351 kfree(q);
2352}
2353
41c47da3 2354static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2355{
2356 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2357
2358 if (!q)
2359 return NULL;
2360
2361 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2362 kfree(q);
2363 return NULL;
2364 }
2365 return q;
2366}
0da9581d 2367
e53edf74
JW		 2368static void qeth_tx_completion_timer(struct timer_list *timer)
2369{
2370 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2371
2372 napi_schedule(&queue->napi);
2373 QETH_TXQ_STAT_INC(queue, completion_timer);
2374}
2375
41c47da3 2376static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50
FB		 2377{
2378 int i, j;
2379
57a688aa 2380 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2381
2382 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2383 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2384 return 0;
2385
57a688aa 2386 QETH_CARD_TEXT(card, 2, "inq");
4601ba6c 2387 card->qdio.in_q = qeth_alloc_qdio_queue();
4a71df50
FB		 2388 if (!card->qdio.in_q)
2389 goto out_nomem;
4601ba6c 2390
4a71df50
FB		 2391 /* inbound buffer pool */
2392 if (qeth_alloc_buffer_pool(card))
2393 goto out_freeinq;
0da9581d 2394
4a71df50 2395 /* outbound */
4a71df50 2396 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2397 struct qeth_qdio_out_q *queue;
2398
2399 queue = qeth_alloc_output_queue();
2400 if (!queue)
4a71df50 2401 goto out_freeoutq;
57a688aa 2402 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2403 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2404 card->qdio.out_qs[i] = queue;
2405 queue->card = card;
2406 queue->queue_no = i;
2407 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2408
4a71df50
FB		 2409 /* give outbound qeth_qdio_buffers their qdio_buffers */
2410 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
e53edf74
JW		 2411 WARN_ON(queue->bufs[j]);
2412 if (qeth_init_qdio_out_buf(queue, j))
0da9581d 2413 goto out_freeoutqbufs;
4a71df50
FB		 2414 }
2415 }
0da9581d
EL		 2416
2417 /* completion */
2418 if (qeth_alloc_cq(card))
2419 goto out_freeoutq;
2420
4a71df50
FB		 2421 return 0;
2422
0da9581d
EL		 2423out_freeoutqbufs:
2424 while (j > 0) {
2425 --j;
2426 kmem_cache_free(qeth_qdio_outbuf_cache,
2427 card->qdio.out_qs[i]->bufs[j]);
2428 card->qdio.out_qs[i]->bufs[j] = NULL;
2429 }
4a71df50 2430out_freeoutq:
bb92d3f8 2431 while (i > 0) {
afa0c590 2432 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2433 card->qdio.out_qs[i] = NULL;
2434 }
4a71df50
FB		 2435 qeth_free_buffer_pool(card);
2436out_freeinq:
4601ba6c 2437 qeth_free_qdio_queue(card->qdio.in_q);
4a71df50
FB		 2438 card->qdio.in_q = NULL;
2439out_nomem:
2440 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2441 return -ENOMEM;
2442}
2443
41c47da3 2444static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2445{
2446 int i, j;
2447
2448 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2449 QETH_QDIO_UNINITIALIZED)
2450 return;
2451
2452 qeth_free_cq(card);
d445a4e2
SO		 2453 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2454 if (card->qdio.in_q->bufs[j].rx_skb)
2455 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2456 }
2457 qeth_free_qdio_queue(card->qdio.in_q);
2458 card->qdio.in_q = NULL;
2459 /* inbound buffer pool */
2460 qeth_free_buffer_pool(card);
2461 /* free outbound qdio_qs */
bb92d3f8
JW		 2462 for (i = 0; i < card->qdio.no_out_queues; i++) {
2463 qeth_free_output_queue(card->qdio.out_qs[i]);
2464 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2465 }
2466}
2467
4a71df50
FB		 2468static void qeth_create_qib_param_field(struct qeth_card *card,
2469 char *param_field)
2470{
2471
2472 param_field[0] = _ascebc['P'];
2473 param_field[1] = _ascebc['C'];
2474 param_field[2] = _ascebc['I'];
2475 param_field[3] = _ascebc['T'];
2476 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2477 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2478 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2479}
2480
2481static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2482 char *param_field)
2483{
2484 param_field[16] = _ascebc['B'];
2485 param_field[17] = _ascebc['L'];
2486 param_field[18] = _ascebc['K'];
2487 param_field[19] = _ascebc['T'];
2488 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2489 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2490 *((unsigned int *) (&param_field[28])) =
2491 card->info.blkt.inter_packet_jumbo;
2492}
2493
2494static int qeth_qdio_activate(struct qeth_card *card)
2495{
57a688aa 2496 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2497 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2498}
2499
2500static int qeth_dm_act(struct qeth_card *card)
2501{
4a71df50
FB		 2502 struct qeth_cmd_buffer *iob;
2503
57a688aa 2504 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2505
f19f8fd2 2506 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2507 if (!iob)
2508 return -ENOMEM;
4a71df50
FB		 2509
2510 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2511 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2512 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2513 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2514 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2515}
2516
2517static int qeth_mpc_initialize(struct qeth_card *card)
2518{
2519 int rc;
2520
57a688aa 2521 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2522
2523 rc = qeth_issue_next_read(card);
2524 if (rc) {
57a688aa 2525 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2526 return rc;
2527 }
2528 rc = qeth_cm_enable(card);
2529 if (rc) {
57a688aa 2530 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
8b5026bc 2531 return rc;
4a71df50
FB		 2532 }
2533 rc = qeth_cm_setup(card);
2534 if (rc) {
57a688aa 2535 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
8b5026bc 2536 return rc;
4a71df50
FB		 2537 }
2538 rc = qeth_ulp_enable(card);
2539 if (rc) {
57a688aa 2540 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
8b5026bc 2541 return rc;
4a71df50
FB		 2542 }
2543 rc = qeth_ulp_setup(card);
2544 if (rc) {
57a688aa 2545 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2546 return rc;
4a71df50 2547 }
41c47da3 2548 rc = qeth_alloc_qdio_queues(card);
4a71df50 2549 if (rc) {
57a688aa 2550 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2551 return rc;
4a71df50
FB		 2552 }
2553 rc = qeth_qdio_establish(card);
2554 if (rc) {
57a688aa 2555 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2556 qeth_free_qdio_queues(card);
8b5026bc 2557 return rc;
4a71df50
FB		 2558 }
2559 rc = qeth_qdio_activate(card);
2560 if (rc) {
57a688aa 2561 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
8b5026bc 2562 return rc;
4a71df50
FB		 2563 }
2564 rc = qeth_dm_act(card);
2565 if (rc) {
57a688aa 2566 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
8b5026bc 2567 return rc;
4a71df50
FB		 2568 }
2569
2570 return 0;
4a71df50
FB		 2571}
2572
4a71df50
FB		 2573void qeth_print_status_message(struct qeth_card *card)
2574{
2575 switch (card->info.type) {
5113fec0
UB		 2576 case QETH_CARD_TYPE_OSD:
2577 case QETH_CARD_TYPE_OSM:
2578 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2579 /* VM will use a non-zero first character
2580 * to indicate a HiperSockets like reporting
2581 * of the level OSA sets the first character to zero
2582 * */
2583 if (!card->info.mcl_level[0]) {
2584 sprintf(card->info.mcl_level, "%02x%02x",
2585 card->info.mcl_level[2],
2586 card->info.mcl_level[3]);
4a71df50
FB		 2587 break;
2588 }
2589 /* fallthrough */
2590 case QETH_CARD_TYPE_IQD:
379ac99e 2591 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2592 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2593 card->info.mcl_level[0]];
2594 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2595 card->info.mcl_level[1]];
2596 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2597 card->info.mcl_level[2]];
2598 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2599 card->info.mcl_level[3]];
2600 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2601 }
2602 break;
2603 default:
2604 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2605 }
239ff408
UB		 2606 dev_info(&card->gdev->dev,
2607 "Device is a%s card%s%s%s\nwith link type %s.\n",
2608 qeth_get_cardname(card),
2609 (card->info.mcl_level[0]) ? " (level: " : "",
2610 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2611 (card->info.mcl_level[0]) ? ")" : "",
2612 qeth_get_cardname_short(card));
4a71df50
FB		 2613}
2614EXPORT_SYMBOL_GPL(qeth_print_status_message);
2615
4a71df50
FB		 2616static void qeth_initialize_working_pool_list(struct qeth_card *card)
2617{
2618 struct qeth_buffer_pool_entry *entry;
2619
847a50fd 2620 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2621
2622 list_for_each_entry(entry,
2623 &card->qdio.init_pool.entry_list, init_list) {
2624 qeth_put_buffer_pool_entry(card, entry);
2625 }
2626}
2627
cef6ff22
JW		 2628static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2629 struct qeth_card *card)
4a71df50
FB		 2630{
2631 struct list_head *plh;
2632 struct qeth_buffer_pool_entry *entry;
2633 int i, free;
4a71df50
FB		 2634
2635 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2636 return NULL;
2637
2638 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2639 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2640 free = 1;
2641 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2642 if (page_count(entry->elements[i]) > 1) {
4a71df50
FB		 2643 free = 0;
2644 break;
2645 }
2646 }
2647 if (free) {
2648 list_del_init(&entry->list);
2649 return entry;
2650 }
2651 }
2652
2653 /* no free buffer in pool so take first one and swap pages */
2654 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2655 struct qeth_buffer_pool_entry, list);
2656 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df
JW		 2657 if (page_count(entry->elements[i]) > 1) {
2658 struct page *page = alloc_page(GFP_ATOMIC);
2659
2660 if (!page)
4a71df50 2661 return NULL;
f81649df
JW		 2662
2663 __free_page(entry->elements[i]);
2664 entry->elements[i] = page;
2665 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2666 }
2667 }
2668 list_del_init(&entry->list);
2669 return entry;
2670}
2671
2672static int qeth_init_input_buffer(struct qeth_card *card,
2673 struct qeth_qdio_buffer *buf)
2674{
2675 struct qeth_buffer_pool_entry *pool_entry;
2676 int i;
2677
b3332930 2678 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2 2679 buf->rx_skb = netdev_alloc_skb(card->dev,
8ca8559f
JW		 2680 ETH_HLEN +
2681 sizeof(struct ipv6hdr));
b3332930 2682 if (!buf->rx_skb)
17413852 2683 return -ENOMEM;
b3332930
FB		 2684 }
2685
4a71df50
FB		 2686 pool_entry = qeth_find_free_buffer_pool_entry(card);
2687 if (!pool_entry)
17413852 2688 return -ENOBUFS;
4a71df50
FB		 2689
2690 /*
2691 * since the buffer is accessed only from the input_tasklet
2692 * there shouldn't be a need to synchronize; also, since we use
2693 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2694 * buffers
2695 */
4a71df50
FB		 2696
2697 buf->pool_entry = pool_entry;
2698 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2699 buf->buffer->element[i].length = PAGE_SIZE;
2db01da8 2700 buf->buffer->element[i].addr =
f81649df 2701 page_to_phys(pool_entry->elements[i]);
4a71df50 2702 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2703 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2704 else
3ec90878
JG		 2705 buf->buffer->element[i].eflags = 0;
2706 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2707 }
2708 return 0;
2709}
2710
8b664cd1
JW		 2711static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2712 struct qeth_qdio_out_q *queue)
2713{
2714 if (!IS_IQD(card) ||
2715 qeth_iqd_is_mcast_queue(card, queue) ||
2716 card->options.cq == QETH_CQ_ENABLED ||
2717 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2718 return 1;
2719
2720 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2721}
2722
aa3ad392 2723static int qeth_init_qdio_queues(struct qeth_card *card)
4a71df50 2724{
7b579ce5 2725 unsigned int i;
4a71df50
FB		 2726 int rc;
2727
57a688aa 2728 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2729
2730 /* inbound queue */
1b45c80b
JW		 2731 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2732 memset(&card->rx, 0, sizeof(struct qeth_rx));
17413852 2733
4a71df50
FB		 2734 qeth_initialize_working_pool_list(card);
2735 /*give only as many buffers to hardware as we have buffer pool entries*/
17413852
JW		 2736 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) {
2737 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2738 if (rc)
2739 return rc;
2740 }
2741
4a71df50
FB		 2742 card->qdio.in_q->next_buf_to_init =
2743 card->qdio.in_buf_pool.buf_count - 1;
2744 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
779e6e1c 2745 card->qdio.in_buf_pool.buf_count - 1);
4a71df50 2746 if (rc) {
57a688aa 2747 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2748 return rc;
2749 }
0da9581d
EL		 2750
2751 /* completion */
2752 rc = qeth_cq_init(card);
2753 if (rc) {
2754 return rc;
2755 }
2756
4a71df50
FB		 2757 /* outbound queue */
2758 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 2759 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2760
2761 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2762 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2763 queue->next_buf_to_fill = 0;
2764 queue->do_pack = 0;
9549d70a
JW		 2765 queue->prev_hdr = NULL;
2766 queue->bulk_start = 0;
8b664cd1
JW		 2767 queue->bulk_count = 0;
2768 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
4e26c5fe
JW		 2769 atomic_set(&queue->used_buffers, 0);
2770 atomic_set(&queue->set_pci_flags_count, 0);
2771 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
96bd6c94 2772 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
4a71df50
FB		 2773 }
2774 return 0;
2775}
4a71df50 2776
48ce6f89 2777static void qeth_ipa_finalize_cmd(struct qeth_card *card,
c3b2218d 2778 struct qeth_cmd_buffer *iob)
48ce6f89 2779{
c3b2218d 2780 qeth_mpc_finalize_cmd(card, iob);
48ce6f89
JW		 2781
2782 /* override with IPA-specific values: */
308946b0 2783 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
48ce6f89
JW		 2784}
2785
c2153277 2786void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
7f92316c
JW		 2787 u16 cmd_length,
2788 bool (*match)(struct qeth_cmd_buffer *iob,
2789 struct qeth_cmd_buffer *reply))
605c9d5f
JW		 2790{
2791 u8 prot_type = qeth_mpc_select_prot_type(card);
c3b2218d 2792 u16 total_length = iob->length;
605c9d5f 2793
f19f8fd2
JW		 2794 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2795 iob->data);
48ce6f89 2796 iob->finalize = qeth_ipa_finalize_cmd;
7f92316c 2797 iob->match = match;
782e4a79 2798
605c9d5f 2799 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 2800 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 2801 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 2802 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2803 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 2804 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2805 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 2806 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f
JW		 2807}
2808EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2809
7f92316c
JW		 2810static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
2811 struct qeth_cmd_buffer *reply)
2812{
2813 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
2814
2815 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
2816}
2817
a59d121d
JW		 2818struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2819 enum qeth_ipa_cmds cmd_code,
2820 enum qeth_prot_versions prot,
2821 unsigned int data_length)
2822{
c3b2218d 2823 enum qeth_link_types link_type = card->info.link_type;
a59d121d 2824 struct qeth_cmd_buffer *iob;
c3b2218d 2825 struct qeth_ipacmd_hdr *hdr;
a59d121d
JW		 2826
2827 data_length += offsetof(struct qeth_ipa_cmd, data);
2828 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2829 QETH_IPA_TIMEOUT);
2830 if (!iob)
2831 return NULL;
2832
7f92316c 2833 qeth_prepare_ipa_cmd(card, iob, data_length, qeth_ipa_match_reply);
c3b2218d
JW		 2834
2835 hdr = &__ipa_cmd(iob)->hdr;
2836 hdr->command = cmd_code;
2837 hdr->initiator = IPA_CMD_INITIATOR_HOST;
2838 /* hdr->seqno is set by qeth_send_control_data() */
2839 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2840 hdr->rel_adapter_no = (u8) card->dev->dev_port;
2841 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2842 hdr->param_count = 1;
2843 hdr->prot_version = prot;
a59d121d
JW		 2844 return iob;
2845}
2846EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2847
742d4d40
JW		 2848static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2849 struct qeth_reply *reply, unsigned long data)
2850{
2851 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2852
2853 return (cmd->hdr.return_code) ? -EIO : 0;
2854}
2855
efbbc1d5
EC		 2856/**
2857 * qeth_send_ipa_cmd() - send an IPA command
2858 *
2859 * See qeth_send_control_data() for explanation of the arguments.
2860 */
2861
4a71df50
FB		 2862int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2863 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2864 unsigned long),
2865 void *reply_param)
2866{
2867 int rc;
4a71df50 2868
847a50fd 2869 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 2870
2e873d10 2871 if (card->read_or_write_problem) {
c3b2218d 2872 qeth_put_cmd(iob);
2e873d10
JW		 2873 return -EIO;
2874 }
2875
742d4d40
JW		 2876 if (reply_cb == NULL)
2877 reply_cb = qeth_send_ipa_cmd_cb;
c3b2218d 2878 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
908abbb5
UB		 2879 if (rc == -ETIME) {
2880 qeth_clear_ipacmd_list(card);
2881 qeth_schedule_recovery(card);
2882 }
4a71df50
FB		 2883 return rc;
2884}
2885EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2886
4b7ae122
JW		 2887static int qeth_send_startlan_cb(struct qeth_card *card,
2888 struct qeth_reply *reply, unsigned long data)
2889{
2890 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2891
2892 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2893 return -ENETDOWN;
2894
2895 return (cmd->hdr.return_code) ? -EIO : 0;
2896}
2897
10340510 2898static int qeth_send_startlan(struct qeth_card *card)
4a71df50 2899{
70919e23 2900 struct qeth_cmd_buffer *iob;
4a71df50 2901
57a688aa 2902 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 2903
a59d121d 2904 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 2905 if (!iob)
2906 return -ENOMEM;
4b7ae122 2907 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 2908}
4a71df50 2909
686c97ee 2910static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 2911{
686c97ee 2912 if (!cmd->hdr.return_code)
4a71df50
FB		 2913 cmd->hdr.return_code =
2914 cmd->data.setadapterparms.hdr.return_code;
686c97ee 2915 return cmd->hdr.return_code;
4a71df50 2916}
4a71df50
FB		 2917
2918static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2919 struct qeth_reply *reply, unsigned long data)
2920{
686c97ee 2921 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50 2922
847a50fd 2923 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 2924 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 2925 return -EIO;
4a71df50 2926
5113fec0 2927 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
4a71df50
FB		 2928 card->info.link_type =
2929 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
57a688aa 2930 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 2931 }
52f82bf1 2932 card->options.adp.supported =
4a71df50 2933 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
686c97ee 2934 return 0;
4a71df50
FB		 2935}
2936
eb3fb0ba 2937static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 2938 enum qeth_ipa_setadp_cmd adp_cmd,
2939 unsigned int data_length)
4a71df50 2940{
b9150461 2941 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 2942 struct qeth_cmd_buffer *iob;
4a71df50 2943
b9150461
JW		 2944 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2945 data_length +
2946 offsetof(struct qeth_ipacmd_setadpparms,
2947 data));
2948 if (!iob)
2949 return NULL;
4a71df50 2950
b9150461
JW		 2951 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2952 hdr->cmdlength = sizeof(*hdr) + data_length;
2953 hdr->command_code = adp_cmd;
2954 hdr->used_total = 1;
2955 hdr->seq_no = 1;
4a71df50
FB		 2956 return iob;
2957}
4a71df50 2958
09960b3a 2959static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 2960{
2961 int rc;
2962 struct qeth_cmd_buffer *iob;
2963
847a50fd 2964 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 2965 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 2966 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 2967 if (!iob)
2968 return -ENOMEM;
4a71df50
FB		 2969 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2970 return rc;
2971}
4a71df50 2972
1da74b1c
FB		 2973static int qeth_query_ipassists_cb(struct qeth_card *card,
2974 struct qeth_reply *reply, unsigned long data)
2975{
2976 struct qeth_ipa_cmd *cmd;
2977
57a688aa 2978 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 2979
2980 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 2981
2982 switch (cmd->hdr.return_code) {
742d4d40
JW		 2983 case IPA_RC_SUCCESS:
2984 break;
a134884a
SR		 2985 case IPA_RC_NOTSUPP:
2986 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 2987 QETH_CARD_TEXT(card, 2, "ipaunsup");
52f82bf1
JW		 2988 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
2989 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
742d4d40 2990 return -EOPNOTSUPP;
a134884a 2991 default:
742d4d40
JW		 2992 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2993 CARD_DEVID(card), cmd->hdr.return_code);
2994 return -EIO;
a134884a
SR		 2995 }
2996
52f82bf1
JW		 2997 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
2998 card->options.ipa4 = cmd->hdr.assists;
2999 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3000 card->options.ipa6 = cmd->hdr.assists;
3001 else
e19e5be8
JW		 3002 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3003 CARD_DEVID(card));
1da74b1c
FB		 3004 return 0;
3005}
3006
09960b3a
JW		 3007static int qeth_query_ipassists(struct qeth_card *card,
3008 enum qeth_prot_versions prot)
1da74b1c
FB		 3009{
3010 int rc;
3011 struct qeth_cmd_buffer *iob;
3012
57a688aa 3013 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 3014 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 3015 if (!iob)
3016 return -ENOMEM;
1da74b1c
FB		 3017 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3018 return rc;
3019}
1da74b1c 3020
45cbb2e4
SR		 3021static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3022 struct qeth_reply *reply, unsigned long data)
3023{
686c97ee 3024 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 3025 struct qeth_query_switch_attributes *attrs;
686c97ee 3026 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 3027
3028 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 3029 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3030 return -EIO;
45cbb2e4 3031
686c97ee
JW		 3032 sw_info = (struct qeth_switch_info *)reply->param;
3033 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3034 sw_info->capabilities = attrs->capabilities;
3035 sw_info->settings = attrs->settings;
3036 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3037 sw_info->settings);
45cbb2e4
SR		 3038 return 0;
3039}
3040
3041int qeth_query_switch_attributes(struct qeth_card *card,
3042 struct qeth_switch_info *sw_info)
3043{
3044 struct qeth_cmd_buffer *iob;
3045
3046 QETH_CARD_TEXT(card, 2, "qswiattr");
3047 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3048 return -EOPNOTSUPP;
3049 if (!netif_carrier_ok(card->dev))
3050 return -ENOMEDIUM;
b9150461 3051 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 3052 if (!iob)
3053 return -ENOMEM;
45cbb2e4
SR		 3054 return qeth_send_ipa_cmd(card, iob,
3055 qeth_query_switch_attributes_cb, sw_info);
3056}
45cbb2e4 3057
5cfbe10a
JW		 3058struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3059 enum qeth_diags_cmds sub_cmd,
3060 unsigned int data_length)
3061{
3062 struct qeth_ipacmd_diagass *cmd;
3063 struct qeth_cmd_buffer *iob;
3064
3065 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3066 DIAG_HDR_LEN + data_length);
3067 if (!iob)
3068 return NULL;
3069
3070 cmd = &__ipa_cmd(iob)->data.diagass;
3071 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3072 cmd->subcmd = sub_cmd;
3073 return iob;
3074}
3075EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3076
1da74b1c
FB		 3077static int qeth_query_setdiagass_cb(struct qeth_card *card,
3078 struct qeth_reply *reply, unsigned long data)
3079{
742d4d40
JW		 3080 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3081 u16 rc = cmd->hdr.return_code;
1da74b1c 3082
742d4d40 3083 if (rc) {
1da74b1c 3084 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 3085 return -EIO;
3086 }
3087
3088 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3089 return 0;
3090}
3091
3092static int qeth_query_setdiagass(struct qeth_card *card)
3093{
3094 struct qeth_cmd_buffer *iob;
1da74b1c 3095
57a688aa 3096 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3097 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3098 if (!iob)
3099 return -ENOMEM;
1da74b1c
FB		 3100 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3101}
3102
3103static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3104{
3105 unsigned long info = get_zeroed_page(GFP_KERNEL);
3106 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3107 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3108 struct ccw_dev_id ccwid;
caf757c6 3109 int level;
1da74b1c
FB		 3110
3111 tid->chpid = card->info.chpid;
3112 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3113 tid->ssid = ccwid.ssid;
3114 tid->devno = ccwid.devno;
3115 if (!info)
3116 return;
caf757c6
HC		 3117 level = stsi(NULL, 0, 0, 0);
3118 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3119 tid->lparnr = info222->lpar_number;
caf757c6 3120 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3121 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3122 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3123 }
3124 free_page(info);
3125 return;
3126}
3127
3128static int qeth_hw_trap_cb(struct qeth_card *card,
3129 struct qeth_reply *reply, unsigned long data)
3130{
742d4d40
JW		 3131 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3132 u16 rc = cmd->hdr.return_code;
1da74b1c 3133
742d4d40 3134 if (rc) {
1da74b1c 3135 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3136 return -EIO;
3137 }
1da74b1c
FB		 3138 return 0;
3139}
3140
3141int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3142{
3143 struct qeth_cmd_buffer *iob;
3144 struct qeth_ipa_cmd *cmd;
3145
57a688aa 3146 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3147 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3148 if (!iob)
3149 return -ENOMEM;
ff5caa7a 3150 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3151 cmd->data.diagass.type = 1;
3152 cmd->data.diagass.action = action;
3153 switch (action) {
3154 case QETH_DIAGS_TRAP_ARM:
3155 cmd->data.diagass.options = 0x0003;
3156 cmd->data.diagass.ext = 0x00010000 +
3157 sizeof(struct qeth_trap_id);
3158 qeth_get_trap_id(card,
3159 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3160 break;
3161 case QETH_DIAGS_TRAP_DISARM:
3162 cmd->data.diagass.options = 0x0001;
3163 break;
3164 case QETH_DIAGS_TRAP_CAPTURE:
3165 break;
3166 }
3167 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3168}
1da74b1c 3169
d73ef324
JW		 3170static int qeth_check_qdio_errors(struct qeth_card *card,
3171 struct qdio_buffer *buf,
3172 unsigned int qdio_error,
3173 const char *dbftext)
4a71df50 3174{
779e6e1c 3175 if (qdio_error) {
847a50fd 3176 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3177 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3178 buf->element[15].sflags);
38593d01 3179 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3180 buf->element[14].sflags);
38593d01 3181 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3182 if ((buf->element[15].sflags) == 0x12) {
845ef904 3183 QETH_CARD_STAT_INC(card, rx_fifo_errors);
76b11f8e
UB		 3184 return 0;
3185 } else
3186 return 1;
4a71df50
FB		 3187 }
3188 return 0;
3189}
4a71df50 3190
d73ef324 3191static void qeth_queue_input_buffer(struct qeth_card *card, int index)
4a71df50
FB		 3192{
3193 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3194 struct list_head *lh;
4a71df50
FB		 3195 int count;
3196 int i;
3197 int rc;
3198 int newcount = 0;
3199
4a71df50
FB		 3200 count = (index < queue->next_buf_to_init)?
3201 card->qdio.in_buf_pool.buf_count -
3202 (queue->next_buf_to_init - index) :
3203 card->qdio.in_buf_pool.buf_count -
3204 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3205 /* only requeue at a certain threshold to avoid SIGAs */
3206 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3207 for (i = queue->next_buf_to_init;
3208 i < queue->next_buf_to_init + count; ++i) {
3209 if (qeth_init_input_buffer(card,
ec2b559d 3210 &queue->bufs[QDIO_BUFNR(i)])) {
4a71df50
FB		 3211 break;
3212 } else {
3213 newcount++;
3214 }
3215 }
3216
3217 if (newcount < count) {
3218 /* we are in memory shortage so we switch back to
3219 traditional skb allocation and drop packages */
4a71df50
FB		 3220 atomic_set(&card->force_alloc_skb, 3);
3221 count = newcount;
3222 } else {
4a71df50
FB		 3223 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3224 }
3225
b3332930
FB		 3226 if (!count) {
3227 i = 0;
3228 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3229 i++;
3230 if (i == card->qdio.in_buf_pool.buf_count) {
3231 QETH_CARD_TEXT(card, 2, "qsarbw");
3232 card->reclaim_index = index;
3233 schedule_delayed_work(
3234 &card->buffer_reclaim_work,
3235 QETH_RECLAIM_WORK_TIME);
3236 }
3237 return;
3238 }
3239
4a71df50
FB		 3240 /*
3241 * according to old code it should be avoided to requeue all
3242 * 128 buffers in order to benefit from PCI avoidance.
3243 * this function keeps at least one buffer (the buffer at
3244 * 'index') un-requeued -> this buffer is the first buffer that
3245 * will be requeued the next time
3246 */
779e6e1c
JG		 3247 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3248 queue->next_buf_to_init, count);
4a71df50 3249 if (rc) {
847a50fd 3250 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50 3251 }
ec2b559d
JW		 3252 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3253 count);
4a71df50
FB		 3254 }
3255}
d73ef324
JW		 3256
3257static void qeth_buffer_reclaim_work(struct work_struct *work)
3258{
3259 struct qeth_card *card = container_of(work, struct qeth_card,
3260 buffer_reclaim_work.work);
3261
3262 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3263 qeth_queue_input_buffer(card, card->reclaim_index);
3264}
4a71df50 3265
d7a39937 3266static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3267 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3268{
3ec90878 3269 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3270
847a50fd 3271 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3272 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3273
3274 if (!qdio_err)
d7a39937 3275 return;
d303b6fd
JG		 3276
3277 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3278 return;
d303b6fd 3279
847a50fd
CO		 3280 QETH_CARD_TEXT(card, 1, "lnkfail");
3281 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3282 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3283}
3284
664e42ac
JW		 3285/**
3286 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3287 * @queue: queue to check for packing buffer
3288 *
3289 * Returns number of buffers that were prepared for flush.
3290 */
3291static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3292{
3293 struct qeth_qdio_out_buffer *buffer;
3294
3295 buffer = queue->bufs[queue->next_buf_to_fill];
3296 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3297 (buffer->next_element_to_fill > 0)) {
3298 /* it's a packing buffer */
3299 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3300 queue->next_buf_to_fill =
ec2b559d 3301 QDIO_BUFNR(queue->next_buf_to_fill + 1);
664e42ac
JW		 3302 return 1;
3303 }
3304 return 0;
3305}
3306
4a71df50
FB		 3307/*
3308 * Switched to packing state if the number of used buffers on a queue
3309 * reaches a certain limit.
3310 */
3311static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3312{
3313 if (!queue->do_pack) {
3314 if (atomic_read(&queue->used_buffers)
3315 >= QETH_HIGH_WATERMARK_PACK){
3316 /* switch non-PACKING -> PACKING */
847a50fd 3317 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3318 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3319 queue->do_pack = 1;
3320 }
3321 }
3322}
3323
3324/*
3325 * Switches from packing to non-packing mode. If there is a packing
3326 * buffer on the queue this buffer will be prepared to be flushed.
3327 * In that case 1 is returned to inform the caller. If no buffer
3328 * has to be flushed, zero is returned.
3329 */
3330static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3331{
4a71df50
FB		 3332 if (queue->do_pack) {
3333 if (atomic_read(&queue->used_buffers)
3334 <= QETH_LOW_WATERMARK_PACK) {
3335 /* switch PACKING -> non-PACKING */
847a50fd 3336 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3337 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3338 queue->do_pack = 0;
664e42ac 3339 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3340 }
3341 }
4a71df50
FB		 3342 return 0;
3343}
3344
779e6e1c
JG		 3345static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3346 int count)
4a71df50 3347{
e53edf74 3348 struct qeth_card *card = queue->card;
4a71df50
FB		 3349 struct qeth_qdio_out_buffer *buf;
3350 int rc;
3351 int i;
3352 unsigned int qdio_flags;
3353
4a71df50 3354 for (i = index; i < index + count; ++i) {
ec2b559d
JW		 3355 unsigned int bidx = QDIO_BUFNR(i);
3356
0da9581d 3357 buf = queue->bufs[bidx];
3ec90878
JG		 3358 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3359 SBAL_EFLAGS_LAST_ENTRY;
4a71df50 3360
0da9581d
EL		 3361 if (queue->bufstates)
3362 queue->bufstates[bidx].user = buf;
3363
379ac99e 3364 if (IS_IQD(queue->card))
4a71df50
FB		 3365 continue;
3366
3367 if (!queue->do_pack) {
3368 if ((atomic_read(&queue->used_buffers) >=
3369 (QETH_HIGH_WATERMARK_PACK -
3370 QETH_WATERMARK_PACK_FUZZ)) &&
3371 !atomic_read(&queue->set_pci_flags_count)) {
3372 /* it's likely that we'll go to packing
3373 * mode soon */
3374 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3375 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3376 }
3377 } else {
3378 if (!atomic_read(&queue->set_pci_flags_count)) {
3379 /*
3380 * there's no outstanding PCI any more, so we
3381 * have to request a PCI to be sure the the PCI
3382 * will wake at some time in the future then we
3383 * can flush packed buffers that might still be
3384 * hanging around, which can happen if no
3385 * further send was requested by the stack
3386 */
3387 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3388 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3389 }
3390 }
3391 }
3392
4a71df50 3393 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
4a71df50
FB		 3394 if (atomic_read(&queue->set_pci_flags_count))
3395 qdio_flags |= QDIO_FLAG_PCI_OUT;
3396 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
779e6e1c 3397 queue->queue_no, index, count);
e53edf74
JW		 3398
3399 /* Fake the TX completion interrupt: */
3400 if (IS_IQD(card))
3401 napi_schedule(&queue->napi);
3402
4a71df50 3403 if (rc) {
d303b6fd 3404 /* ignore temporary SIGA errors without busy condition */
1549d13f 3405 if (rc == -ENOBUFS)
d303b6fd 3406 return;
847a50fd 3407 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3408 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3409 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3410 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3411 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3412
4a71df50
FB		 3413 /* this must not happen under normal circumstances. if it
3414 * happens something is really wrong -> recover */
3415 qeth_schedule_recovery(queue->card);
3416 return;
3417 }
4a71df50
FB		 3418}
3419
9549d70a
JW		 3420static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3421{
8b664cd1 3422 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3423
8b664cd1 3424 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3425 queue->prev_hdr = NULL;
8b664cd1 3426 queue->bulk_count = 0;
9549d70a
JW		 3427}
3428
4a71df50
FB		 3429static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3430{
3431 int index;
3432 int flush_cnt = 0;
3433 int q_was_packing = 0;
3434
3435 /*
3436 * check if weed have to switch to non-packing mode or if
3437 * we have to get a pci flag out on the queue
3438 */
3439 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3440 !atomic_read(&queue->set_pci_flags_count)) {
3441 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3442 QETH_OUT_Q_UNLOCKED) {
3443 /*
3444 * If we get in here, there was no action in
3445 * do_send_packet. So, we check if there is a
3446 * packing buffer to be flushed here.
3447 */
4a71df50
FB		 3448 index = queue->next_buf_to_fill;
3449 q_was_packing = queue->do_pack;
3450 /* queue->do_pack may change */
3451 barrier();
3452 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3453 if (!flush_cnt &&
3454 !atomic_read(&queue->set_pci_flags_count))
664e42ac 3455 flush_cnt += qeth_prep_flush_pack_buffer(queue);
b0abc4f5
JW		 3456 if (q_was_packing)
3457 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3458 if (flush_cnt)
779e6e1c 3459 qeth_flush_buffers(queue, index, flush_cnt);
4a71df50
FB		 3460 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3461 }
3462 }
3463}
3464
7bcd64eb
JW		 3465static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3466 unsigned long card_ptr)
a1c3ed4c
FB		 3467{
3468 struct qeth_card *card = (struct qeth_card *)card_ptr;
3469
d3d1b205 3470 if (card->dev->flags & IFF_UP)
334b49de 3471 napi_schedule_irqoff(&card->napi);
a1c3ed4c 3472}
a1c3ed4c 3473
0da9581d
EL		 3474int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3475{
3476 int rc;
3477
3478 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3479 rc = -1;
3480 goto out;
3481 } else {
3482 if (card->options.cq == cq) {
3483 rc = 0;
3484 goto out;
3485 }
3486
41c47da3 3487 qeth_free_qdio_queues(card);
0da9581d
EL		 3488 card->options.cq = cq;
3489 rc = 0;
3490 }
3491out:
3492 return rc;
3493
3494}
3495EXPORT_SYMBOL_GPL(qeth_configure_cq);
3496
3b346c18
JW		 3497static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3498 unsigned int queue, int first_element,
3499 int count)
3500{
0da9581d
EL		 3501 struct qeth_qdio_q *cq = card->qdio.c_q;
3502 int i;
3503 int rc;
3504
3505 if (!qeth_is_cq(card, queue))
4326b5b4 3506 return;
0da9581d
EL		 3507
3508 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3509 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3510 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3511
3512 if (qdio_err) {
3a18d754 3513 netif_tx_stop_all_queues(card->dev);
0da9581d 3514 qeth_schedule_recovery(card);
4326b5b4 3515 return;
0da9581d
EL		 3516 }
3517
3518 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3519 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3520 int e = 0;
0da9581d 3521
903e4853
UB		 3522 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3523 buffer->element[e].addr) {
2db01da8 3524 unsigned long phys_aob_addr = buffer->element[e].addr;
0da9581d 3525
0da9581d 3526 qeth_qdio_handle_aob(card, phys_aob_addr);
0da9581d
EL		 3527 ++e;
3528 }
3b346c18 3529 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d
EL		 3530 }
3531 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3532 card->qdio.c_q->next_buf_to_init,
3533 count);
3534 if (rc) {
3535 dev_warn(&card->gdev->dev,
3536 "QDIO reported an error, rc=%i\n", rc);
3537 QETH_CARD_TEXT(card, 2, "qcqherr");
3538 }
ec2b559d
JW		 3539
3540 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3541}
3542
7bcd64eb
JW		 3543static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3544 unsigned int qdio_err, int queue,
3545 int first_elem, int count,
3546 unsigned long card_ptr)
a1c3ed4c
FB		 3547{
3548 struct qeth_card *card = (struct qeth_card *)card_ptr;
3549
0da9581d
EL		 3550 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3551 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3552
3553 if (qeth_is_cq(card, queue))
3554 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3555 else if (qdio_err)
a1c3ed4c
FB		 3556 qeth_schedule_recovery(card);
3557}
a1c3ed4c 3558
7bcd64eb
JW		 3559static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3560 unsigned int qdio_error, int __queue,
3561 int first_element, int count,
3562 unsigned long card_ptr)
4a71df50
FB		 3563{
3564 struct qeth_card *card = (struct qeth_card *) card_ptr;
3565 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3a18d754 3566 struct net_device *dev = card->dev;
54a50941 3567 struct netdev_queue *txq;
4a71df50
FB		 3568 int i;
3569
847a50fd 3570 QETH_CARD_TEXT(card, 6, "qdouhdl");
1549d13f 3571 if (qdio_error & QDIO_ERROR_FATAL) {
847a50fd 3572 QETH_CARD_TEXT(card, 2, "achkcond");
3a18d754 3573 netif_tx_stop_all_queues(dev);
779e6e1c
JG		 3574 qeth_schedule_recovery(card);
3575 return;
4a71df50 3576 }
4326b5b4 3577
4a71df50 3578 for (i = first_element; i < (first_element + count); ++i) {
ec2b559d
JW		 3579 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)];
3580
3581 qeth_handle_send_error(card, buf, qdio_error);
3582 qeth_clear_output_buffer(queue, buf, qdio_error, 0);
4a71df50 3583 }
e53edf74 3584
4a71df50 3585 atomic_sub(count, &queue->used_buffers);
e53edf74 3586 qeth_check_outbound_queue(queue);
4a71df50 3587
54a50941
JW		 3588 txq = netdev_get_tx_queue(dev, __queue);
3589 /* xmit may have observed the full-condition, but not yet stopped the
3590 * txq. In which case the code below won't trigger. So before returning,
3591 * xmit will re-check the txq's fill level and wake it up if needed.
3592 */
3593 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3594 netif_tx_wake_queue(txq);
4a71df50 3595}
4a71df50 3596
290b8348
SR		 3597/**
3598 * Note: Function assumes that we have 4 outbound queues.
3599 */
73dc2daf 3600int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3601{
e6c15b5f 3602 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3603 u8 tos;
3604
290b8348
SR		 3605 switch (card->qdio.do_prio_queueing) {
3606 case QETH_PRIO_Q_ING_TOS:
3607 case QETH_PRIO_Q_ING_PREC:
73dc2daf 3608 switch (qeth_get_ip_version(skb)) {
290b8348
SR		 3609 case 4:
3610 tos = ipv4_get_dsfield(ip_hdr(skb));
3611 break;
3612 case 6:
3613 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3614 break;
3615 default:
3616 return card->qdio.default_out_queue;
4a71df50 3617 }
290b8348 3618 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3619 return ~tos >> 6 & 3;
290b8348 3620 if (tos & IPTOS_MINCOST)
e6c15b5f 3621 return 3;
290b8348
SR		 3622 if (tos & IPTOS_RELIABILITY)
3623 return 2;
3624 if (tos & IPTOS_THROUGHPUT)
3625 return 1;
3626 if (tos & IPTOS_LOWDELAY)
3627 return 0;
d66cb37e
SR		 3628 break;
3629 case QETH_PRIO_Q_ING_SKB:
3630 if (skb->priority > 5)
3631 return 0;
e6c15b5f 3632 return ~skb->priority >> 1 & 3;
d66cb37e 3633 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3634 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3635 return ~ntohs(veth->h_vlan_TCI) >>
3636 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3637 break;
4a71df50 3638 default:
290b8348 3639 break;
4a71df50 3640 }
290b8348 3641 return card->qdio.default_out_queue;
4a71df50
FB		 3642}
3643EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3644
2863c613
EC		 3645/**
3646 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3647 * @skb: SKB address
3648 *
3649 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3650 * fragmented part of the SKB. Returns zero for linear SKB.
3651 */
356156b6 3652static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3653{
2863c613 3654 int cnt, elements = 0;
271648b4
FB		 3655
3656 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3657 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3658
3659 elements += qeth_get_elements_for_range(
3660 (addr_t)skb_frag_address(frag),
3661 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3662 }
3663 return elements;
3664}
271648b4 3665
40e6a225
JW		 3666/**
3667 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3668 * to transmit an skb.
3669 * @skb: the skb to operate on.
3670 * @data_offset: skip this part of the skb's linear data
3671 *
3672 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3673 * skb's data (both its linear part and paged fragments).
3674 */
3675unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
ba86ceee
JW		 3676{
3677 unsigned int elements = qeth_get_elements_for_frags(skb);
3678 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3679 addr_t start = (addr_t)skb->data + data_offset;
3680
3681 if (start != end)
3682 elements += qeth_get_elements_for_range(start, end);
3683 return elements;
3684}
40e6a225 3685EXPORT_SYMBOL_GPL(qeth_count_elements);
4a71df50 3686
e517b649
JW		 3687#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3688 MAX_TCP_HEADER)
55494264 3689
0d6f02d3 3690/**
ba86ceee
JW		 3691 * qeth_add_hw_header() - add a HW header to an skb.
3692 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3693 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3694 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3695 * @hdr_len: length of the HW header.
3696 * @proto_len: length of protocol headers that need to be in same page as the
3697 * HW header.
0d6f02d3
JW		 3698 *
3699 * Returns the pushed length. If the header can't be pushed on
3700 * (eg. because it would cross a page boundary), it is allocated from
3701 * the cache instead and 0 is returned.
ba86ceee 3702 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3703 * Error to create the hdr is indicated by returning with < 0.
3704 */
b0abc4f5
JW		 3705static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3706 struct sk_buff *skb, struct qeth_hdr **hdr,
3707 unsigned int hdr_len, unsigned int proto_len,
3708 unsigned int *elements)
ba86ceee 3709{
a7c2f4a3 3710 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3711 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3712 unsigned int __elements;
3713 addr_t start, end;
3714 bool push_ok;
3715 int rc;
3716
3717check_layout:
a7c2f4a3 3718 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3719 end = (addr_t)skb->data;
3720
a7c2f4a3 3721 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3722 /* Push HW header into same page as first protocol header. */
3723 push_ok = true;
e517b649
JW		 3724 /* ... but TSO always needs a separate element for headers: */
3725 if (skb_is_gso(skb))
3726 __elements = 1 + qeth_count_elements(skb, proto_len);
3727 else
3728 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3729 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3730 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3731 push_ok = true;
ba86ceee 3732 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3733 } else {
3734 /* Use header cache, copy protocol headers up. */
3735 push_ok = false;
3736 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3737 }
3738
3739 /* Compress skb to fit into one IO buffer: */
3740 if (__elements > max_elements) {
3741 if (!skb_is_nonlinear(skb)) {
3742 /* Drop it, no easy way of shrinking it further. */
3743 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3744 max_elements, __elements, skb->len);
3745 return -E2BIG;
3746 }
3747
3748 rc = skb_linearize(skb);
b0abc4f5
JW		 3749 if (rc) {
3750 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3751 return rc;
b0abc4f5 3752 }
ba86ceee 3753
b0abc4f5 3754 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 3755 /* Linearization changed the layout, re-evaluate: */
3756 goto check_layout;
3757 }
3758
3759 *elements = __elements;
3760 /* Add the header: */
3761 if (push_ok) {
a7c2f4a3
JW		 3762 *hdr = skb_push(skb, hdr_len);
3763 return hdr_len;
0d6f02d3
JW		 3764 }
3765 /* fall back */
55494264
JW		 3766 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3767 return -E2BIG;
0d6f02d3
JW		 3768 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3769 if (!*hdr)
3770 return -ENOMEM;
a7c2f4a3
JW		 3771 /* Copy protocol headers behind HW header: */
3772 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 3773 return 0;
3774}
0d6f02d3 3775
9549d70a 3776static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 3777 struct sk_buff *curr_skb,
3778 struct qeth_hdr *curr_hdr)
3779{
8b664cd1 3780 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 3781 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3782
3783 if (!prev_hdr)
3784 return true;
3785
3786 /* All packets must have the same target: */
3787 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3788 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3789
3790 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3791 eth_hdr(curr_skb)->h_dest) &&
3792 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3793 }
3794
3795 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3796 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3797}
3798
3799static unsigned int __qeth_fill_buffer(struct sk_buff *skb,
3800 struct qeth_qdio_out_buffer *buf,
3801 bool is_first_elem, unsigned int offset)
4a71df50 3802{
384d2ef1
JW		 3803 struct qdio_buffer *buffer = buf->buffer;
3804 int element = buf->next_element_to_fill;
cc309f83
JW		 3805 int length = skb_headlen(skb) - offset;
3806 char *data = skb->data + offset;
4e2fe4ed 3807 unsigned int elem_length, cnt;
4a71df50 3808
cc309f83 3809 /* map linear part into buffer element(s) */
4a71df50 3810 while (length > 0) {
4e2fe4ed
JW		 3811 elem_length = min_t(unsigned int, length,
3812 PAGE_SIZE - offset_in_page(data));
4a71df50 3813
2db01da8 3814 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed
JW		 3815 buffer->element[element].length = elem_length;
3816 length -= elem_length;
384d2ef1
JW		 3817 if (is_first_elem) {
3818 is_first_elem = false;
5258830b
JW		 3819 if (length || skb_is_nonlinear(skb))
3820 /* skb needs additional elements */
3ec90878 3821 buffer->element[element].eflags =
5258830b 3822 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 3823 else
5258830b
JW		 3824 buffer->element[element].eflags = 0;
3825 } else {
3826 buffer->element[element].eflags =
3827 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 3828 }
4e2fe4ed
JW		 3829
3830 data += elem_length;
4a71df50 3831 element++;
4a71df50 3832 }
51aa165c 3833
cc309f83 3834 /* map page frags into buffer element(s) */
51aa165c 3835 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 3836 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3837
3838 data = skb_frag_address(frag);
3839 length = skb_frag_size(frag);
271648b4 3840 while (length > 0) {
4e2fe4ed
JW		 3841 elem_length = min_t(unsigned int, length,
3842 PAGE_SIZE - offset_in_page(data));
271648b4 3843
2db01da8 3844 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed 3845 buffer->element[element].length = elem_length;
271648b4
FB		 3846 buffer->element[element].eflags =
3847 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 3848
3849 length -= elem_length;
3850 data += elem_length;
271648b4
FB		 3851 element++;
3852 }
51aa165c
FB		 3853 }
3854
3ec90878
JG		 3855 if (buffer->element[element - 1].eflags)
3856 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 3857 buf->next_element_to_fill = element;
9549d70a 3858 return element;
4a71df50
FB		 3859}
3860
eaf3cc08
JW		 3861/**
3862 * qeth_fill_buffer() - map skb into an output buffer
eaf3cc08
JW		 3863 * @buf: buffer to transport the skb
3864 * @skb: skb to map into the buffer
3865 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3866 * from qeth_core_header_cache.
3867 * @offset: when mapping the skb, start at skb->data + offset
3868 * @hd_len: if > 0, build a dedicated header element of this size
3869 */
9549d70a
JW		 3870static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3871 struct sk_buff *skb, struct qeth_hdr *hdr,
3872 unsigned int offset, unsigned int hd_len)
4a71df50 3873{
eaf3cc08 3874 struct qdio_buffer *buffer = buf->buffer;
384d2ef1 3875 bool is_first_elem = true;
4a71df50 3876
dc149e37 3877 __skb_queue_tail(&buf->skb_list, skb);
4a71df50 3878
eaf3cc08
JW		 3879 /* build dedicated header element */
3880 if (hd_len) {
683d718a 3881 int element = buf->next_element_to_fill;
384d2ef1
JW		 3882 is_first_elem = false;
3883
2db01da8 3884 buffer->element[element].addr = virt_to_phys(hdr);
f1588177 3885 buffer->element[element].length = hd_len;
3ec90878 3886 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
eaf3cc08
JW		 3887 /* remember to free cache-allocated qeth_hdr: */
3888 buf->is_header[element] = ((void *)hdr != skb->data);
683d718a
FB		 3889 buf->next_element_to_fill++;
3890 }
3891
9549d70a 3892 return __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4a71df50
FB		 3893}
3894
9549d70a
JW		 3895static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3896 struct sk_buff *skb, unsigned int elements,
3897 struct qeth_hdr *hdr, unsigned int offset,
3898 unsigned int hd_len)
4a71df50 3899{
96bd6c94 3900 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 3901 struct qeth_qdio_out_buffer *buffer;
9549d70a 3902 unsigned int next_element;
54a50941
JW		 3903 struct netdev_queue *txq;
3904 bool stopped = false;
9549d70a
JW		 3905 bool flush;
3906
8b664cd1 3907 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 3908 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 3909
54a50941
JW		 3910 /* Just a sanity check, the wake/stop logic should ensure that we always
3911 * get a free buffer.
4a71df50
FB		 3912 */
3913 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 3914 return -EBUSY;
54a50941 3915
8b664cd1
JW		 3916 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
3917
3918 if (flush ||
3919 (buffer->next_element_to_fill + elements > queue->max_elements)) {
3920 if (buffer->next_element_to_fill > 0) {
3921 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3922 queue->bulk_count++;
3923 }
3924
3925 if (queue->bulk_count >= queue->bulk_max)
3926 flush = true;
3927
3928 if (flush)
3929 qeth_flush_queue(queue);
3930
3931 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
3932 queue->bulk_count)];
54a50941 3933
9549d70a
JW		 3934 /* Sanity-check again: */
3935 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3936 return -EBUSY;
3937 }
3938
3939 if (buffer->next_element_to_fill == 0 &&
3940 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 3941 /* If a TX completion happens right _here_ and misses to wake
3942 * the txq, then our re-check below will catch the race.
3943 */
3944 QETH_TXQ_STAT_INC(queue, stopped);
3945 netif_tx_stop_queue(txq);
3946 stopped = true;
3947 }
3948
9549d70a 3949 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 3950 buffer->bytes += bytes;
9549d70a 3951 queue->prev_hdr = hdr;
96bd6c94 3952
9549d70a
JW		 3953 flush = __netdev_tx_sent_queue(txq, bytes,
3954 !stopped && netdev_xmit_more());
3955
3956 if (flush || next_element >= queue->max_elements) {
3957 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 3958 queue->bulk_count++;
3959
3960 if (queue->bulk_count >= queue->bulk_max)
3961 flush = true;
3962
3963 if (flush)
3964 qeth_flush_queue(queue);
9549d70a 3965 }
54a50941
JW		 3966
3967 if (stopped && !qeth_out_queue_is_full(queue))
3968 netif_tx_start_queue(txq);
4a71df50 3969 return 0;
4a71df50 3970}
4a71df50
FB		 3971
3972int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
13ddacb5 3973 struct sk_buff *skb, struct qeth_hdr *hdr,
9c3bfda9
JW		 3974 unsigned int offset, unsigned int hd_len,
3975 int elements_needed)
4a71df50
FB		 3976{
3977 struct qeth_qdio_out_buffer *buffer;
9549d70a 3978 unsigned int next_element;
54a50941
JW		 3979 struct netdev_queue *txq;
3980 bool stopped = false;
4a71df50
FB		 3981 int start_index;
3982 int flush_count = 0;
3983 int do_pack = 0;
3984 int tmp;
3985 int rc = 0;
3986
4a71df50
FB		 3987 /* spin until we get the queue ... */
3988 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3989 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3990 start_index = queue->next_buf_to_fill;
0da9581d 3991 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 3992
3993 /* Just a sanity check, the wake/stop logic should ensure that we always
3994 * get a free buffer.
4a71df50
FB		 3995 */
3996 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3997 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3998 return -EBUSY;
3999 }
54a50941
JW		 4000
4001 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4002
4a71df50
FB		 4003 /* check if we need to switch packing state of this queue */
4004 qeth_switch_to_packing_if_needed(queue);
4005 if (queue->do_pack) {
4006 do_pack = 1;
64ef8957 4007 /* does packet fit in current buffer? */
4e26c5fe
JW		 4008 if (buffer->next_element_to_fill + elements_needed >
4009 queue->max_elements) {
64ef8957
FB		 4010 /* ... no -> set state PRIMED */
4011 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4012 flush_count++;
4013 queue->next_buf_to_fill =
ec2b559d 4014 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 4015 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4016
4017 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 4018 if (atomic_read(&buffer->state) !=
4019 QETH_QDIO_BUF_EMPTY) {
4020 qeth_flush_buffers(queue, start_index,
779e6e1c 4021 flush_count);
64ef8957 4022 atomic_set(&queue->state,
4a71df50 4023 QETH_OUT_Q_UNLOCKED);
3cdc8a25
JW		 4024 rc = -EBUSY;
4025 goto out;
4a71df50
FB		 4026 }
4027 }
4028 }
f72b4644 4029
54a50941
JW		 4030 if (buffer->next_element_to_fill == 0 &&
4031 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4032 /* If a TX completion happens right _here_ and misses to wake
4033 * the txq, then our re-check below will catch the race.
4034 */
4035 QETH_TXQ_STAT_INC(queue, stopped);
4036 netif_tx_stop_queue(txq);
4037 stopped = true;
4038 }
4039
9549d70a
JW		 4040 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4041
4042 if (queue->do_pack)
4043 QETH_TXQ_STAT_INC(queue, skbs_pack);
4044 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4045 flush_count++;
4046 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 4047 queue->next_buf_to_fill =
4048 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 4049 }
4050
4a71df50 4051 if (flush_count)
779e6e1c 4052 qeth_flush_buffers(queue, start_index, flush_count);
4a71df50
FB		 4053 else if (!atomic_read(&queue->set_pci_flags_count))
4054 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4055 /*
4056 * queue->state will go from LOCKED -> UNLOCKED or from
4057 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4058 * (switch packing state or flush buffer to get another pci flag out).
4059 * In that case we will enter this loop
4060 */
4061 while (atomic_dec_return(&queue->state)) {
4a71df50
FB		 4062 start_index = queue->next_buf_to_fill;
4063 /* check if we can go back to non-packing state */
3cdc8a25 4064 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4a71df50
FB		 4065 /*
4066 * check if we need to flush a packing buffer to get a pci
4067 * flag out on the queue
4068 */
3cdc8a25
JW		 4069 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4070 tmp = qeth_prep_flush_pack_buffer(queue);
4071 if (tmp) {
4072 qeth_flush_buffers(queue, start_index, tmp);
4073 flush_count += tmp;
4074 }
4a71df50 4075 }
3cdc8a25 4076out:
4a71df50 4077 /* at this point the queue is UNLOCKED again */
b0abc4f5
JW		 4078 if (do_pack)
4079 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4080
54a50941
JW		 4081 if (stopped && !qeth_out_queue_is_full(queue))
4082 netif_tx_start_queue(txq);
4a71df50
FB		 4083 return rc;
4084}
4085EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4086
81ec5439
JW		 4087static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4088 unsigned int payload_len, struct sk_buff *skb,
4089 unsigned int proto_len)
82bf5c08
JW		 4090{
4091 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4092
4093 ext->hdr_tot_len = sizeof(*ext);
4094 ext->imb_hdr_no = 1;
4095 ext->hdr_type = 1;
4096 ext->hdr_version = 1;
4097 ext->hdr_len = 28;
4098 ext->payload_len = payload_len;
4099 ext->mss = skb_shinfo(skb)->gso_size;
4100 ext->dg_hdr_len = proto_len;
4101}
82bf5c08 4102
fc69660b 4103int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
eca1d5c2 4104 struct qeth_qdio_out_q *queue, int ipv,
b0abc4f5
JW		 4105 void (*fill_header)(struct qeth_qdio_out_q *queue,
4106 struct qeth_hdr *hdr, struct sk_buff *skb,
eca1d5c2 4107 int ipv, unsigned int data_len))
fc69660b 4108{
82bf5c08 4109 unsigned int proto_len, hw_hdr_len;
fc69660b 4110 unsigned int frame_len = skb->len;
82bf5c08 4111 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4112 unsigned int data_offset = 0;
4113 struct qeth_hdr *hdr = NULL;
4114 unsigned int hd_len = 0;
4115 unsigned int elements;
4116 int push_len, rc;
fc69660b 4117
82bf5c08
JW		 4118 if (is_tso) {
4119 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4120 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4121 } else {
4122 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4123 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4124 }
4125
fc69660b
JW		 4126 rc = skb_cow_head(skb, hw_hdr_len);
4127 if (rc)
4128 return rc;
4129
b0abc4f5 4130 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4131 &elements);
4132 if (push_len < 0)
4133 return push_len;
82bf5c08 4134 if (is_tso || !push_len) {
fc69660b
JW		 4135 /* HW header needs its own buffer element. */
4136 hd_len = hw_hdr_len + proto_len;
82bf5c08 4137 data_offset = push_len + proto_len;
fc69660b 4138 }
e517b649 4139 memset(hdr, 0, hw_hdr_len);
eca1d5c2 4140 fill_header(queue, hdr, skb, ipv, frame_len);
82bf5c08
JW		 4141 if (is_tso)
4142 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4143 frame_len - proto_len, skb, proto_len);
fc69660b 4144
fc69660b 4145 if (IS_IQD(card)) {
9549d70a
JW		 4146 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4147 hd_len);
fc69660b
JW		 4148 } else {
4149 /* TODO: drop skb_orphan() once TX completion is fast enough */
4150 skb_orphan(skb);
4151 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4152 hd_len, elements);
4153 }
4154
eeac0e20
JW		 4155 if (rc && !push_len)
4156 kmem_cache_free(qeth_core_header_cache, hdr);
4157
fc69660b
JW		 4158 return rc;
4159}
4160EXPORT_SYMBOL_GPL(qeth_xmit);
4161
4a71df50
FB		 4162static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4163 struct qeth_reply *reply, unsigned long data)
4164{
686c97ee 4165 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4166 struct qeth_ipacmd_setadpparms *setparms;
4167
847a50fd 4168 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4169
4a71df50 4170 setparms = &(cmd->data.setadapterparms);
686c97ee 4171 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4172 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4173 setparms->data.mode = SET_PROMISC_MODE_OFF;
4174 }
4175 card->info.promisc_mode = setparms->data.mode;
742d4d40 4176 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4177}
4178
59b757a9 4179void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4180{
59b757a9
JW		 4181 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4182 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4183 struct qeth_cmd_buffer *iob;
4184 struct qeth_ipa_cmd *cmd;
4185
847a50fd 4186 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4187 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4188
4189 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4190 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4191 if (!iob)
4192 return;
ff5caa7a 4193 cmd = __ipa_cmd(iob);
4a71df50
FB		 4194 cmd->data.setadapterparms.data.mode = mode;
4195 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4196}
4197EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4198
4a71df50
FB		 4199static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4200 struct qeth_reply *reply, unsigned long data)
4201{
686c97ee 4202 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4203 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4204
847a50fd 4205 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4206 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4207 return -EIO;
4a71df50 4208
b144b99f 4209 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4210 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4211 return -EADDRNOTAVAIL;
4212
b144b99f
JW		 4213 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4214 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4215 return -EADDRNOTAVAIL;
b144b99f
JW		 4216
4217 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4218 return 0;
4219}
4220
4221int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4222{
4223 int rc;
4224 struct qeth_cmd_buffer *iob;
4225 struct qeth_ipa_cmd *cmd;
4226
847a50fd 4227 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4228
4229 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4230 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4231 if (!iob)
4232 return -ENOMEM;
ff5caa7a 4233 cmd = __ipa_cmd(iob);
4a71df50 4234 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4235 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4236 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4237 card->dev->dev_addr);
4a71df50
FB		 4238 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4239 NULL);
4240 return rc;
4241}
4242EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4243
d64ecc22
EL		 4244static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4245 struct qeth_reply *reply, unsigned long data)
4246{
686c97ee 4247 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4248 struct qeth_set_access_ctrl *access_ctrl_req;
0f54761d 4249 int fallback = *(int *)reply->param;
d64ecc22 4250
847a50fd 4251 QETH_CARD_TEXT(card, 4, "setaccb");
686c97ee 4252 if (cmd->hdr.return_code)
742d4d40 4253 return -EIO;
686c97ee 4254 qeth_setadpparms_inspect_rc(cmd);
d64ecc22 4255
d64ecc22 4256 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4257 QETH_CARD_TEXT_(card, 2, "rc=%d",
4258 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4259 if (cmd->data.setadapterparms.hdr.return_code !=
4260 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4261 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4262 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4263 cmd->data.setadapterparms.hdr.return_code);
d64ecc22
EL		 4264 switch (cmd->data.setadapterparms.hdr.return_code) {
4265 case SET_ACCESS_CTRL_RC_SUCCESS:
d64ecc22
EL		 4266 if (card->options.isolation == ISOLATION_MODE_NONE) {
4267 dev_info(&card->gdev->dev,
4268 "QDIO data connection isolation is deactivated\n");
4269 } else {
4270 dev_info(&card->gdev->dev,
4271 "QDIO data connection isolation is activated\n");
4272 }
d64ecc22 4273 break;
0f54761d 4274 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4275 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4276 CARD_DEVID(card));
0f54761d
SR		 4277 if (fallback)
4278 card->options.isolation = card->options.prev_isolation;
4279 break;
4280 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4281 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4282 CARD_DEVID(card));
0f54761d
SR		 4283 if (fallback)
4284 card->options.isolation = card->options.prev_isolation;
4285 break;
d64ecc22 4286 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4287 dev_err(&card->gdev->dev, "Adapter does not "
4288 "support QDIO data connection isolation\n");
d64ecc22 4289 break;
d64ecc22 4290 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4291 dev_err(&card->gdev->dev,
4292 "Adapter is dedicated. "
4293 "QDIO data connection isolation not supported\n");
0f54761d
SR		 4294 if (fallback)
4295 card->options.isolation = card->options.prev_isolation;
d64ecc22 4296 break;
d64ecc22 4297 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4298 dev_err(&card->gdev->dev,
4299 "TSO does not permit QDIO data connection isolation\n");
0f54761d
SR		 4300 if (fallback)
4301 card->options.isolation = card->options.prev_isolation;
4302 break;
4303 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4304 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4305 "support reflective relay mode\n");
4306 if (fallback)
4307 card->options.isolation = card->options.prev_isolation;
4308 break;
4309 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4310 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4311 "enabled at the adjacent switch port");
4312 if (fallback)
4313 card->options.isolation = card->options.prev_isolation;
4314 break;
4315 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4316 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4317 "at the adjacent switch failed\n");
d64ecc22 4318 break;
d64ecc22 4319 default:
d64ecc22 4320 /* this should never happen */
0f54761d
SR		 4321 if (fallback)
4322 card->options.isolation = card->options.prev_isolation;
d64ecc22
EL		 4323 break;
4324 }
742d4d40 4325 return (cmd->hdr.return_code) ? -EIO : 0;
d64ecc22
EL		 4326}
4327
4328static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
0f54761d 4329 enum qeth_ipa_isolation_modes isolation, int fallback)
d64ecc22
EL		 4330{
4331 int rc;
4332 struct qeth_cmd_buffer *iob;
4333 struct qeth_ipa_cmd *cmd;
4334 struct qeth_set_access_ctrl *access_ctrl_req;
4335
847a50fd 4336 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4337
d64ecc22 4338 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4339 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4340 if (!iob)
4341 return -ENOMEM;
ff5caa7a 4342 cmd = __ipa_cmd(iob);
d64ecc22
EL		 4343 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4344 access_ctrl_req->subcmd_code = isolation;
4345
4346 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
0f54761d 4347 &fallback);
57a688aa 4348 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
d64ecc22
EL		 4349 return rc;
4350}
4351
0f54761d 4352int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
d64ecc22
EL		 4353{
4354 int rc = 0;
4355
847a50fd 4356 QETH_CARD_TEXT(card, 4, "setactlo");
d64ecc22 4357
379ac99e
JW		 4358 if ((IS_OSD(card) || IS_OSX(card)) &&
4359 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
d64ecc22 4360 rc = qeth_setadpparms_set_access_ctrl(card,
0f54761d 4361 card->options.isolation, fallback);
d64ecc22 4362 if (rc) {
e19e5be8
JW		 4363 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4364 rc, CARD_DEVID(card));
0f54761d 4365 rc = -EOPNOTSUPP;
d64ecc22
EL		 4366 }
4367 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4368 card->options.isolation = ISOLATION_MODE_NONE;
4369
4370 dev_err(&card->gdev->dev, "Adapter does not "
4371 "support QDIO data connection isolation\n");
4372 rc = -EOPNOTSUPP;
4373 }
4374 return rc;
4375}
d64ecc22 4376
0290bd29 4377void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4a71df50
FB		 4378{
4379 struct qeth_card *card;
4380
509e2562 4381 card = dev->ml_priv;
847a50fd 4382 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4383 qeth_schedule_recovery(card);
4384}
4385EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4386
942d6984 4387static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4388{
509e2562 4389 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4390 int rc = 0;
4391
4392 switch (regnum) {
4393 case MII_BMCR: /* Basic mode control register */
4394 rc = BMCR_FULLDPLX;
4395 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4396 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
54e049c2
JW		 4397 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4398 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4399 rc |= BMCR_SPEED100;
4400 break;
4401 case MII_BMSR: /* Basic mode status register */
4402 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4403 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4404 BMSR_100BASE4;
4405 break;
4406 case MII_PHYSID1: /* PHYS ID 1 */
4407 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4408 dev->dev_addr[2];
4409 rc = (rc >> 5) & 0xFFFF;
4410 break;
4411 case MII_PHYSID2: /* PHYS ID 2 */
4412 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4413 break;
4414 case MII_ADVERTISE: /* Advertisement control reg */
4415 rc = ADVERTISE_ALL;
4416 break;
4417 case MII_LPA: /* Link partner ability reg */
4418 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4419 LPA_100BASE4 | LPA_LPACK;
4420 break;
4421 case MII_EXPANSION: /* Expansion register */
4422 break;
4423 case MII_DCOUNTER: /* disconnect counter */
4424 break;
4425 case MII_FCSCOUNTER: /* false carrier counter */
4426 break;
4427 case MII_NWAYTEST: /* N-way auto-neg test register */
4428 break;
4429 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4430 rc = card->stats.rx_length_errors +
4431 card->stats.rx_frame_errors +
4432 card->stats.rx_fifo_errors;
4a71df50
FB		 4433 break;
4434 case MII_SREVISION: /* silicon revision */
4435 break;
4436 case MII_RESV1: /* reserved 1 */
4437 break;
4438 case MII_LBRERROR: /* loopback, rx, bypass error */
4439 break;
4440 case MII_PHYADDR: /* physical address */
4441 break;
4442 case MII_RESV2: /* reserved 2 */
4443 break;
4444 case MII_TPISTATUS: /* TPI status for 10mbps */
4445 break;
4446 case MII_NCONFIG: /* network interface config */
4447 break;
4448 default:
4449 break;
4450 }
4451 return rc;
4452}
4a71df50 4453
4a71df50 4454static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4455 struct qeth_reply *reply, unsigned long data)
4a71df50 4456{
7c5f8ffb
JW		 4457 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4458 struct qeth_arp_query_info *qinfo = reply->param;
4459 struct qeth_ipacmd_setadpparms *adp_cmd;
4460 unsigned int data_len;
9a764c1e 4461 void *snmp_data;
4a71df50 4462
847a50fd 4463 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4464
4a71df50 4465 if (cmd->hdr.return_code) {
8a593148 4466 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4467 return -EIO;
4a71df50
FB		 4468 }
4469 if (cmd->data.setadapterparms.hdr.return_code) {
4470 cmd->hdr.return_code =
4471 cmd->data.setadapterparms.hdr.return_code;
8a593148 4472 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4473 return -EIO;
4a71df50 4474 }
7c5f8ffb
JW		 4475
4476 adp_cmd = &cmd->data.setadapterparms;
4477 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4478 if (adp_cmd->hdr.seq_no == 1) {
4479 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4480 } else {
7c5f8ffb
JW		 4481 snmp_data = &adp_cmd->data.snmp.request;
4482 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4483 }
4a71df50
FB		 4484
4485 /* check if there is enough room in userspace */
4486 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4487 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4488 return -ENOSPC;
4a71df50 4489 }
847a50fd 4490 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4491 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4492 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4493 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4494 /*copy entries to user buffer*/
9a764c1e 4495 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4496 qinfo->udata_offset += data_len;
9a764c1e 4497
4a71df50
FB		 4498 if (cmd->data.setadapterparms.hdr.seq_no <
4499 cmd->data.setadapterparms.hdr.used_total)
4500 return 1;
4501 return 0;
4502}
4503
942d6984 4504static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4505{
d4c08afa 4506 struct qeth_snmp_ureq __user *ureq;
4a71df50 4507 struct qeth_cmd_buffer *iob;
6fb392b1 4508 unsigned int req_len;
4a71df50
FB		 4509 struct qeth_arp_query_info qinfo = {0, };
4510 int rc = 0;
4511
847a50fd 4512 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4513
379ac99e 4514 if (IS_VM_NIC(card))
4a71df50
FB		 4515 return -EOPNOTSUPP;
4516
4517 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4518 IS_LAYER3(card))
4a71df50 4519 return -EOPNOTSUPP;
4fda3354 4520
d4c08afa
JW		 4521 ureq = (struct qeth_snmp_ureq __user *) udata;
4522 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4523 get_user(req_len, &ureq->hdr.req_len))
4524 return -EFAULT;
4525
292a50e3
JW		 4526 /* Sanitize user input, to avoid overflows in iob size calculation: */
4527 if (req_len > QETH_BUFSIZE)
4528 return -EINVAL;
4529
d4c08afa
JW		 4530 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4531 if (!iob)
4532 return -ENOMEM;
4533
4534 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4535 &ureq->cmd, req_len)) {
4536 qeth_put_cmd(iob);
4a71df50 4537 return -EFAULT;
d4c08afa
JW		 4538 }
4539
4a71df50
FB		 4540 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4541 if (!qinfo.udata) {
d4c08afa 4542 qeth_put_cmd(iob);
4a71df50
FB		 4543 return -ENOMEM;
4544 }
4545 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4546
c2153277 4547 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4548 if (rc)
e19e5be8
JW		 4549 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4550 CARD_DEVID(card), rc);
4a71df50
FB		 4551 else {
4552 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4553 rc = -EFAULT;
4554 }
d4c08afa 4555
4a71df50
FB		 4556 kfree(qinfo.udata);
4557 return rc;
4558}
4a71df50 4559
c3ab96f3
FB		 4560static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4561 struct qeth_reply *reply, unsigned long data)
4562{
686c97ee 4563 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
c3ab96f3
FB		 4564 struct qeth_qoat_priv *priv;
4565 char *resdata;
4566 int resdatalen;
4567
4568 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4569 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4570 return -EIO;
c3ab96f3 4571
c3ab96f3
FB		 4572 priv = (struct qeth_qoat_priv *)reply->param;
4573 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4574 resdata = (char *)data + 28;
4575
4b7ae122
JW		 4576 if (resdatalen > (priv->buffer_len - priv->response_len))
4577 return -ENOSPC;
c3ab96f3
FB		 4578
4579 memcpy((priv->buffer + priv->response_len), resdata,
4580 resdatalen);
4581 priv->response_len += resdatalen;
4582
4583 if (cmd->data.setadapterparms.hdr.seq_no <
4584 cmd->data.setadapterparms.hdr.used_total)
4585 return 1;
4586 return 0;
4587}
4588
942d6984 4589static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4590{
4591 int rc = 0;
4592 struct qeth_cmd_buffer *iob;
4593 struct qeth_ipa_cmd *cmd;
4594 struct qeth_query_oat *oat_req;
4595 struct qeth_query_oat_data oat_data;
4596 struct qeth_qoat_priv priv;
4597 void __user *tmp;
4598
4599 QETH_CARD_TEXT(card, 3, "qoatcmd");
4600
4601 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4602 rc = -EOPNOTSUPP;
4603 goto out;
4604 }
4605
4606 if (copy_from_user(&oat_data, udata,
4607 sizeof(struct qeth_query_oat_data))) {
4608 rc = -EFAULT;
4609 goto out;
4610 }
4611
4612 priv.buffer_len = oat_data.buffer_len;
4613 priv.response_len = 0;
aec45e85 4614 priv.buffer = vzalloc(oat_data.buffer_len);
c3ab96f3
FB		 4615 if (!priv.buffer) {
4616 rc = -ENOMEM;
4617 goto out;
4618 }
4619
4620 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4621 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4622 if (!iob) {
4623 rc = -ENOMEM;
4624 goto out_free;
4625 }
ff5caa7a 4626 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4627 oat_req = &cmd->data.setadapterparms.data.query_oat;
4628 oat_req->subcmd_code = oat_data.command;
4629
4630 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4631 &priv);
4632 if (!rc) {
4633 if (is_compat_task())
4634 tmp = compat_ptr(oat_data.ptr);
4635 else
4636 tmp = (void __user *)(unsigned long)oat_data.ptr;
4637
4638 if (copy_to_user(tmp, priv.buffer,
4639 priv.response_len)) {
4640 rc = -EFAULT;
4641 goto out_free;
4642 }
4643
4644 oat_data.response_len = priv.response_len;
4645
4646 if (copy_to_user(udata, &oat_data,
4647 sizeof(struct qeth_query_oat_data)))
4648 rc = -EFAULT;
4b7ae122 4649 }
c3ab96f3
FB		 4650
4651out_free:
aec45e85 4652 vfree(priv.buffer);
c3ab96f3
FB		 4653out:
4654 return rc;
4655}
c3ab96f3 4656
e71e4072
HC		 4657static int qeth_query_card_info_cb(struct qeth_card *card,
4658 struct qeth_reply *reply, unsigned long data)
02d5cb5b 4659{
686c97ee
JW		 4660 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4661 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
02d5cb5b 4662 struct qeth_query_card_info *card_info;
02d5cb5b
EC		 4663
4664 QETH_CARD_TEXT(card, 2, "qcrdincb");
686c97ee 4665 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 4666 return -EIO;
02d5cb5b 4667
686c97ee
JW		 4668 card_info = &cmd->data.setadapterparms.data.card_info;
4669 carrier_info->card_type = card_info->card_type;
4670 carrier_info->port_mode = card_info->port_mode;
4671 carrier_info->port_speed = card_info->port_speed;
02d5cb5b
EC		 4672 return 0;
4673}
4674
d896ac62
JW		 4675int qeth_query_card_info(struct qeth_card *card,
4676 struct carrier_info *carrier_info)
02d5cb5b
EC		 4677{
4678 struct qeth_cmd_buffer *iob;
4679
4680 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4681 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4682 return -EOPNOTSUPP;
b9150461 4683 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
1aec42bc
TR		 4684 if (!iob)
4685 return -ENOMEM;
02d5cb5b
EC		 4686 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4687 (void *)carrier_info);
4688}
02d5cb5b 4689
ec61bd2f
JW		 4690/**
4691 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4692 * @card: pointer to a qeth_card
4693 *
4694 * Returns
4695 * 0, if a MAC address has been set for the card's netdevice
4696 * a return code, for various error conditions
4697 */
4698int qeth_vm_request_mac(struct qeth_card *card)
4699{
4700 struct diag26c_mac_resp *response;
4701 struct diag26c_mac_req *request;
4702 struct ccw_dev_id id;
4703 int rc;
4704
57a688aa 4705 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 4706
ec61bd2f
JW		 4707 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4708 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4709 if (!request || !response) {
4710 rc = -ENOMEM;
4711 goto out;
4712 }
4713
46646105 4714 ccw_device_get_id(CARD_DDEV(card), &id);
ec61bd2f
JW		 4715 request->resp_buf_len = sizeof(*response);
4716 request->resp_version = DIAG26C_VERSION2;
4717 request->op_code = DIAG26C_GET_MAC;
4718 request->devno = id.devno;
4719
615dff22 4720 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 4721 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 4722 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 4723 if (rc)
4724 goto out;
615dff22 4725 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 4726
4727 if (request->resp_buf_len < sizeof(*response) ||
4728 response->version != request->resp_version) {
4729 rc = -EIO;
57a688aa
JW		 4730 QETH_CARD_TEXT(card, 2, "badresp");
4731 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4732 sizeof(request->resp_buf_len));
ec61bd2f
JW		 4733 } else if (!is_valid_ether_addr(response->mac)) {
4734 rc = -EINVAL;
57a688aa
JW		 4735 QETH_CARD_TEXT(card, 2, "badmac");
4736 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f
JW		 4737 } else {
4738 ether_addr_copy(card->dev->dev_addr, response->mac);
4739 }
4740
4741out:
4742 kfree(response);
4743 kfree(request);
4744 return rc;
4745}
4746EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4747
d0ff1f52
UB		 4748static void qeth_determine_capabilities(struct qeth_card *card)
4749{
f9e50b02
JW		 4750 struct qeth_channel *channel = &card->data;
4751 struct ccw_device *ddev = channel->ccwdev;
d0ff1f52 4752 int rc;
d0ff1f52
UB		 4753 int ddev_offline = 0;
4754
57a688aa 4755 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 4756 if (!ddev->online) {
4757 ddev_offline = 1;
871602b1 4758 rc = qeth_start_channel(channel);
d0ff1f52 4759 if (rc) {
57a688aa 4760 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 4761 goto out;
4762 }
4763 }
4764
2066e1db 4765 rc = qeth_read_conf_data(card);
d0ff1f52 4766 if (rc) {
e19e5be8
JW		 4767 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4768 CARD_DEVID(card), rc);
57a688aa 4769 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 4770 goto out_offline;
4771 }
d0ff1f52
UB		 4772
4773 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4774 if (rc)
57a688aa 4775 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 4776
57a688aa
JW		 4777 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4778 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4779 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4780 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4781 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 4782 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4783 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4784 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4785 dev_info(&card->gdev->dev,
4786 "Completion Queueing supported\n");
4787 } else {
4788 card->options.cq = QETH_CQ_NOTAVAILABLE;
4789 }
4790
4791
d0ff1f52
UB		 4792out_offline:
4793 if (ddev_offline == 1)
f9e50b02 4794 qeth_stop_channel(channel);
d0ff1f52
UB		 4795out:
4796 return;
4797}
4798
cef6ff22
JW		 4799static void qeth_qdio_establish_cq(struct qeth_card *card,
4800 struct qdio_buffer **in_sbal_ptrs,
4801 void (**queue_start_poll)
4802 (struct ccw_device *, int,
4803 unsigned long))
4804{
0da9581d
EL		 4805 int i;
4806
4807 if (card->options.cq == QETH_CQ_ENABLED) {
4808 int offset = QDIO_MAX_BUFFERS_PER_Q *
4809 (card->qdio.no_in_queues - 1);
e9091ffd
JW		 4810
4811 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4812 in_sbal_ptrs[offset + i] =
4813 card->qdio.c_q->bufs[i].buffer;
0da9581d
EL		 4814
4815 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4816 }
4817}
4818
4a71df50
FB		 4819static int qeth_qdio_establish(struct qeth_card *card)
4820{
4821 struct qdio_initialize init_data;
4822 char *qib_param_field;
4823 struct qdio_buffer **in_sbal_ptrs;
104ea556 4824 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4a71df50
FB		 4825 struct qdio_buffer **out_sbal_ptrs;
4826 int i, j, k;
4827 int rc = 0;
4828
57a688aa 4829 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 4830
c593642c 4831 qib_param_field = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
104ea556 4832 if (!qib_param_field) {
4833 rc = -ENOMEM;
4834 goto out_free_nothing;
4835 }
4a71df50
FB		 4836
4837 qeth_create_qib_param_field(card, qib_param_field);
4838 qeth_create_qib_param_field_blkt(card, qib_param_field);
4839
6396bb22
KC		 4840 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4841 sizeof(void *),
4a71df50
FB		 4842 GFP_KERNEL);
4843 if (!in_sbal_ptrs) {
104ea556 4844 rc = -ENOMEM;
4845 goto out_free_qib_param;
4a71df50 4846 }
e9091ffd
JW		 4847
4848 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4849 in_sbal_ptrs[i] = card->qdio.in_q->bufs[i].buffer;
4a71df50 4850
6396bb22 4851 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
0da9581d 4852 GFP_KERNEL);
104ea556 4853 if (!queue_start_poll) {
4854 rc = -ENOMEM;
4855 goto out_free_in_sbals;
4856 }
0da9581d 4857 for (i = 0; i < card->qdio.no_in_queues; ++i)
7bcd64eb 4858 queue_start_poll[i] = qeth_qdio_start_poll;
0da9581d
EL		 4859
4860 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
104ea556 4861
4a71df50 4862 out_sbal_ptrs =
6396bb22
KC		 4863 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4864 sizeof(void *),
4865 GFP_KERNEL);
4a71df50 4866 if (!out_sbal_ptrs) {
104ea556 4867 rc = -ENOMEM;
4868 goto out_free_queue_start_poll;
4a71df50 4869 }
e9091ffd 4870
4a71df50 4871 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
e9091ffd
JW		 4872 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++, k++)
4873 out_sbal_ptrs[k] =
4874 card->qdio.out_qs[i]->bufs[j]->buffer;
4a71df50
FB		 4875
4876 memset(&init_data, 0, sizeof(struct qdio_initialize));
4877 init_data.cdev = CARD_DDEV(card);
379ac99e
JW		 4878 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4879 QDIO_QETH_QFMT;
4a71df50
FB		 4880 init_data.qib_param_field_format = 0;
4881 init_data.qib_param_field = qib_param_field;
0da9581d 4882 init_data.no_input_qs = card->qdio.no_in_queues;
4a71df50 4883 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 4884 init_data.input_handler = qeth_qdio_input_handler;
4885 init_data.output_handler = qeth_qdio_output_handler;
e58b0d90 4886 init_data.queue_start_poll_array = queue_start_poll;
4a71df50 4887 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 4888 init_data.input_sbal_addr_array = in_sbal_ptrs;
4889 init_data.output_sbal_addr_array = out_sbal_ptrs;
0da9581d 4890 init_data.output_sbal_state_array = card->qdio.out_bufstates;
e53edf74 4891 init_data.scan_threshold = IS_IQD(card) ? 0 : 32;
4a71df50
FB		 4892
4893 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4894 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
cc961d40
JG		 4895 rc = qdio_allocate(&init_data);
4896 if (rc) {
4897 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4898 goto out;
4899 }
4900 rc = qdio_establish(&init_data);
4901 if (rc) {
4a71df50 4902 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 4903 qdio_free(CARD_DDEV(card));
4904 }
4a71df50 4905 }
0da9581d
EL		 4906
4907 switch (card->options.cq) {
4908 case QETH_CQ_ENABLED:
4909 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4910 break;
4911 case QETH_CQ_DISABLED:
4912 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4913 break;
4914 default:
4915 break;
4916 }
cc961d40 4917out:
4a71df50 4918 kfree(out_sbal_ptrs);
104ea556 4919out_free_queue_start_poll:
4920 kfree(queue_start_poll);
4921out_free_in_sbals:
4a71df50 4922 kfree(in_sbal_ptrs);
104ea556 4923out_free_qib_param:
4a71df50 4924 kfree(qib_param_field);
104ea556 4925out_free_nothing:
4a71df50
FB		 4926 return rc;
4927}
4928
4929static void qeth_core_free_card(struct qeth_card *card)
4930{
57a688aa 4931 QETH_CARD_TEXT(card, 2, "freecrd");
c3b2218d 4932 qeth_put_cmd(card->read_cmd);
c0a2e4d1 4933 destroy_workqueue(card->event_wq);
6bcac508 4934 unregister_service_level(&card->qeth_service_level);
a2eb0ad5 4935 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 4936 kfree(card);
4937}
4938
395672e0
SR		 4939void qeth_trace_features(struct qeth_card *card)
4940{
4941 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 4942 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4943 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4944 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4945 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4946 sizeof(card->info.diagass_support));
395672e0
SR		 4947}
4948EXPORT_SYMBOL_GPL(qeth_trace_features);
4949
4a71df50 4950static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 4951 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4952 .driver_info = QETH_CARD_TYPE_OSD},
4953 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4954 .driver_info = QETH_CARD_TYPE_IQD},
4955 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4956 .driver_info = QETH_CARD_TYPE_OSN},
4957 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4958 .driver_info = QETH_CARD_TYPE_OSM},
4959 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4960 .driver_info = QETH_CARD_TYPE_OSX},
4a71df50
FB		 4961 {},
4962};
4963MODULE_DEVICE_TABLE(ccw, qeth_ids);
4964
4965static struct ccw_driver qeth_ccw_driver = {
3bda058b 4966 .driver = {
3e70b3b8 4967 .owner = THIS_MODULE,
3bda058b
SO		 4968 .name = "qeth",
4969 },
4a71df50
FB		 4970 .ids = qeth_ids,
4971 .probe = ccwgroup_probe_ccwdev,
4972 .remove = ccwgroup_remove_ccwdev,
4973};
4974
9fae5c3b 4975int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 4976{
6ebb7f8d 4977 int retries = 3;
4a71df50
FB		 4978 int rc;
4979
57a688aa 4980 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 4981 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 4982 rc = qeth_update_from_chp_desc(card);
4983 if (rc)
4984 return rc;
4a71df50 4985retry:
6ebb7f8d 4986 if (retries < 3)
e19e5be8
JW		 4987 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4988 CARD_DEVID(card));
379ac99e 4989 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
f9e50b02
JW		 4990 qeth_stop_channel(&card->data);
4991 qeth_stop_channel(&card->write);
4992 qeth_stop_channel(&card->read);
22ae2790 4993 qdio_free(CARD_DDEV(card));
871602b1
JW		 4994
4995 rc = qeth_start_channel(&card->read);
aa909224
UB		 4996 if (rc)
4997 goto retriable;
871602b1 4998 rc = qeth_start_channel(&card->write);
aa909224
UB		 4999 if (rc)
5000 goto retriable;
871602b1 5001 rc = qeth_start_channel(&card->data);
aa909224
UB		 5002 if (rc)
5003 goto retriable;
aa909224 5004retriable:
4a71df50 5005 if (rc == -ERESTARTSYS) {
57a688aa 5006 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 5007 return rc;
5008 } else if (rc) {
57a688aa 5009 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 5010 if (--retries < 0)
4a71df50
FB		 5011 goto out;
5012 else
5013 goto retry;
5014 }
d0ff1f52 5015 qeth_determine_capabilities(card);
4a71df50
FB		 5016 qeth_init_tokens(card);
5017 qeth_init_func_level(card);
2e873d10
JW		 5018
5019 rc = qeth_idx_activate_read_channel(card);
5020 if (rc == -EINTR) {
57a688aa 5021 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 5022 return rc;
5023 } else if (rc) {
57a688aa 5024 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 5025 if (--retries < 0)
5026 goto out;
5027 else
5028 goto retry;
5029 }
2e873d10
JW		 5030
5031 rc = qeth_idx_activate_write_channel(card);
5032 if (rc == -EINTR) {
57a688aa 5033 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 5034 return rc;
5035 } else if (rc) {
57a688aa 5036 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5037 if (--retries < 0)
5038 goto out;
5039 else
5040 goto retry;
5041 }
908abbb5 5042 card->read_or_write_problem = 0;
4a71df50
FB		 5043 rc = qeth_mpc_initialize(card);
5044 if (rc) {
57a688aa 5045 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5046 goto out;
5047 }
1da74b1c 5048
10340510
JW		 5049 rc = qeth_send_startlan(card);
5050 if (rc) {
57a688aa 5051 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5052 if (rc == -ENETDOWN) {
5053 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5054 *carrier_ok = false;
10340510 5055 } else {
10340510
JW		 5056 goto out;
5057 }
91cc98f5 5058 } else {
9fae5c3b
JW		 5059 *carrier_ok = true;
5060 }
5061
52f82bf1
JW		 5062 card->options.ipa4.supported = 0;
5063 card->options.ipa6.supported = 0;
5064 card->options.adp.supported = 0;
b4d72c08 5065 card->options.sbp.supported_funcs = 0;
1da74b1c 5066 card->info.diagass_support = 0;
1aec42bc
TR		 5067 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5068 if (rc == -ENOMEM)
5069 goto out;
ee75fb86
KM		 5070 if (qeth_is_supported(card, IPA_IPV6)) {
5071 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5072 if (rc == -ENOMEM)
5073 goto out;
5074 }
1aec42bc
TR		 5075 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5076 rc = qeth_query_setadapterparms(card);
5077 if (rc < 0) {
57a688aa 5078 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5079 goto out;
5080 }
5081 }
5082 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5083 rc = qeth_query_setdiagass(card);
0b698c83 5084 if (rc)
57a688aa 5085 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc 5086 }
9897d583
JW		 5087
5088 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5089 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5090 card->info.hwtrap = 0;
5091
5092 rc = qeth_set_access_ctrl_online(card, 0);
5093 if (rc)
5094 goto out;
5095
aa3ad392
JW		 5096 rc = qeth_init_qdio_queues(card);
5097 if (rc) {
5098 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5099 goto out;
5100 }
5101
4a71df50
FB		 5102 return 0;
5103out:
74eacdb9
FB		 5104 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5105 "an error on the device\n");
e19e5be8
JW		 5106 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5107 CARD_DEVID(card), rc);
4a71df50
FB		 5108 return rc;
5109}
5110EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5111
91003f35
JW		 5112static int qeth_set_online(struct qeth_card *card)
5113{
5114 int rc;
5115
5116 mutex_lock(&card->discipline_mutex);
5117 mutex_lock(&card->conf_mutex);
5118 QETH_CARD_TEXT(card, 2, "setonlin");
5119
5120 rc = card->discipline->set_online(card);
5121
5122 mutex_unlock(&card->conf_mutex);
5123 mutex_unlock(&card->discipline_mutex);
5124
5125 return rc;
5126}
5127
5128int qeth_set_offline(struct qeth_card *card, bool resetting)
5129{
5130 int rc, rc2, rc3;
5131
5132 mutex_lock(&card->discipline_mutex);
5133 mutex_lock(&card->conf_mutex);
5134 QETH_CARD_TEXT(card, 3, "setoffl");
5135
5136 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5137 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5138 card->info.hwtrap = 1;
5139 }
5140
5141 rtnl_lock();
5142 card->info.open_when_online = card->dev->flags & IFF_UP;
5143 dev_close(card->dev);
5144 netif_device_detach(card->dev);
5145 netif_carrier_off(card->dev);
5146 rtnl_unlock();
5147
5148 card->discipline->set_offline(card);
5149
5150 rc = qeth_stop_channel(&card->data);
5151 rc2 = qeth_stop_channel(&card->write);
5152 rc3 = qeth_stop_channel(&card->read);
5153 if (!rc)
5154 rc = (rc2) ? rc2 : rc3;
5155 if (rc)
5156 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5157 qdio_free(CARD_DDEV(card));
5158
5159 /* let user_space know that device is offline */
5160 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5161
5162 mutex_unlock(&card->conf_mutex);
5163 mutex_unlock(&card->discipline_mutex);
5164 return 0;
5165}
5166EXPORT_SYMBOL_GPL(qeth_set_offline);
5167
5168static int qeth_do_reset(void *data)
5169{
5170 struct qeth_card *card = data;
5171 int rc;
5172
5173 QETH_CARD_TEXT(card, 2, "recover1");
5174 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5175 return 0;
5176 QETH_CARD_TEXT(card, 2, "recover2");
5177 dev_warn(&card->gdev->dev,
5178 "A recovery process has been started for the device\n");
5179
5180 qeth_set_offline(card, true);
5181 rc = qeth_set_online(card);
5182 if (!rc) {
5183 dev_info(&card->gdev->dev,
5184 "Device successfully recovered!\n");
5185 } else {
5186 ccwgroup_set_offline(card->gdev);
5187 dev_warn(&card->gdev->dev,
5188 "The qeth device driver failed to recover an error on the device\n");
5189 }
5190 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5191 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5192 return 0;
5193}
5194
c04b116a
JW		 5195#if IS_ENABLED(CONFIG_QETH_L3)
5196static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5197 struct qeth_hdr *hdr)
5198{
5199 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5200 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5201 struct net_device *dev = skb->dev;
5202
5203 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5204 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5205 "FAKELL", skb->len);
5206 return;
5207 }
5208
5209 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5210 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5211 ETH_P_IP;
5212 unsigned char tg_addr[ETH_ALEN];
5213
5214 skb_reset_network_header(skb);
5215 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5216 case QETH_CAST_MULTICAST:
5217 if (prot == ETH_P_IP)
5218 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5219 else
5220 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5221 QETH_CARD_STAT_INC(card, rx_multicast);
5222 break;
5223 case QETH_CAST_BROADCAST:
5224 ether_addr_copy(tg_addr, dev->broadcast);
5225 QETH_CARD_STAT_INC(card, rx_multicast);
5226 break;
5227 default:
5228 if (card->options.sniffer)
5229 skb->pkt_type = PACKET_OTHERHOST;
5230 ether_addr_copy(tg_addr, dev->dev_addr);
5231 }
5232
5233 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5234 dev_hard_header(skb, dev, prot, tg_addr,
5235 &l3_hdr->next_hop.rx.src_mac, skb->len);
5236 else
5237 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5238 skb->len);
5239 }
5240
5241 /* copy VLAN tag from hdr into skb */
5242 if (!card->options.sniffer &&
5243 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5244 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5245 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5246 l3_hdr->vlan_id :
5247 l3_hdr->next_hop.rx.vlan_id;
5248
5249 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5250 }
5251}
5252#endif
5253
5254static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
dcdcf867 5255 struct qeth_hdr *hdr, bool uses_frags)
c04b116a 5256{
dcdcf867 5257 struct napi_struct *napi = &card->napi;
c04b116a
JW		 5258 bool is_cso;
5259
5260 switch (hdr->hdr.l2.id) {
5261 case QETH_HEADER_TYPE_OSN:
5262 skb_push(skb, sizeof(*hdr));
5263 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
5264 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5265 QETH_CARD_STAT_INC(card, rx_packets);
5266
5267 card->osn_info.data_cb(skb);
5268 return;
5269#if IS_ENABLED(CONFIG_QETH_L3)
5270 case QETH_HEADER_TYPE_LAYER3:
5271 qeth_l3_rebuild_skb(card, skb, hdr);
5272 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5273 break;
5274#endif
5275 case QETH_HEADER_TYPE_LAYER2:
5276 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5277 break;
5278 default:
5279 /* never happens */
dcdcf867
JW		 5280 if (uses_frags)
5281 napi_free_frags(napi);
5282 else
5283 dev_kfree_skb_any(skb);
c04b116a
JW		 5284 return;
5285 }
5286
5287 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5288 skb->ip_summed = CHECKSUM_UNNECESSARY;
5289 QETH_CARD_STAT_INC(card, rx_skb_csum);
5290 } else {
5291 skb->ip_summed = CHECKSUM_NONE;
5292 }
5293
c04b116a
JW		 5294 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5295 QETH_CARD_STAT_INC(card, rx_packets);
5296 if (skb_is_nonlinear(skb)) {
5297 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5298 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5299 skb_shinfo(skb)->nr_frags);
5300 }
5301
dcdcf867
JW		 5302 if (uses_frags) {
5303 napi_gro_frags(napi);
5304 } else {
5305 skb->protocol = eth_type_trans(skb, skb->dev);
5306 napi_gro_receive(napi, skb);
5307 }
c04b116a
JW		 5308}
5309
f677fcb9 5310static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
4a71df50 5311{
f677fcb9 5312 struct page *page = virt_to_page(data);
b6f72f96 5313 unsigned int next_frag;
b3332930 5314
8d68af6a 5315 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5316 get_page(page);
f677fcb9
JW		 5317 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5318 data_len);
4a71df50
FB		 5319}
5320
bca51650
TR		 5321static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5322{
5323 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5324}
5325
c04b116a
JW		 5326static int qeth_extract_skb(struct qeth_card *card,
5327 struct qeth_qdio_buffer *qethbuffer,
5328 struct qdio_buffer_element **__element,
5329 int *__offset)
4a71df50
FB		 5330{
5331 struct qdio_buffer_element *element = *__element;
b3332930 5332 struct qdio_buffer *buffer = qethbuffer->buffer;
dcdcf867 5333 struct napi_struct *napi = &card->napi;
f677fcb9 5334 unsigned int linear_len = 0;
dcdcf867 5335 bool uses_frags = false;
4a71df50 5336 int offset = *__offset;
17caeaa4 5337 bool use_rx_sg = false;
f677fcb9 5338 unsigned int headroom;
c04b116a 5339 struct qeth_hdr *hdr;
8d68af6a 5340 struct sk_buff *skb;
76b11f8e 5341 int skb_len = 0;
4a71df50 5342
7d4faee7 5343next_packet:
4a71df50 5344 /* qeth_hdr must not cross element boundaries */
864c17c3 5345 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50 5346 if (qeth_is_last_sbale(element))
c04b116a 5347 return -ENODATA;
4a71df50
FB		 5348 element++;
5349 offset = 0;
4a71df50 5350 }
4a71df50 5351
2db01da8 5352 hdr = phys_to_virt(element->addr) + offset;
c04b116a 5353 offset += sizeof(*hdr);
5b55633f
JW		 5354 skb = NULL;
5355
c04b116a 5356 switch (hdr->hdr.l2.id) {
76b11f8e 5357 case QETH_HEADER_TYPE_LAYER2:
c04b116a 5358 skb_len = hdr->hdr.l2.pkt_length;
5b55633f 5359 linear_len = ETH_HLEN;
17caeaa4 5360 headroom = 0;
76b11f8e
UB		 5361 break;
5362 case QETH_HEADER_TYPE_LAYER3:
c04b116a 5363 skb_len = hdr->hdr.l3.length;
7d4faee7
JW		 5364 if (!IS_LAYER3(card)) {
5365 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5366 goto walk_packet;
5367 }
5368
c04b116a 5369 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5b55633f
JW		 5370 linear_len = ETH_HLEN;
5371 headroom = 0;
5372 break;
5373 }
5374
c04b116a 5375 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5b55633f
JW		 5376 linear_len = sizeof(struct ipv6hdr);
5377 else
5378 linear_len = sizeof(struct iphdr);
1abd2296 5379 headroom = ETH_HLEN;
76b11f8e
UB		 5380 break;
5381 case QETH_HEADER_TYPE_OSN:
c04b116a 5382 skb_len = hdr->hdr.osn.pdu_length;
7d4faee7
JW		 5383 if (!IS_OSN(card)) {
5384 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5385 goto walk_packet;
5386 }
5387
5b55633f 5388 linear_len = skb_len;
76b11f8e
UB		 5389 headroom = sizeof(struct qeth_hdr);
5390 break;
5391 default:
c04b116a 5392 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5fd3fcbb
JW		 5393 QETH_CARD_STAT_INC(card, rx_frame_errors);
5394 else
5395 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5396
7d4faee7 5397 /* Can't determine packet length, drop the whole buffer. */
c04b116a 5398 return -EPROTONOSUPPORT;
4a71df50
FB		 5399 }
5400
5b55633f
JW		 5401 if (skb_len < linear_len) {
5402 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5403 goto walk_packet;
5404 }
4a71df50 5405
17caeaa4 5406 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
54a61fbc 5407 (skb_len > card->options.rx_sg_cb &&
17caeaa4
JW		 5408 !atomic_read(&card->force_alloc_skb) &&
5409 !IS_OSN(card));
8d68af6a 5410
dcdcf867 5411 if (use_rx_sg) {
8d68af6a 5412 /* QETH_CQ_ENABLED only: */
8ca8559f
JW		 5413 if (qethbuffer->rx_skb &&
5414 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
dcdcf867
JW		 5415 skb = qethbuffer->rx_skb;
5416 qethbuffer->rx_skb = NULL;
5417 goto use_skb;
5418 }
5419
5420 skb = napi_get_frags(napi);
5421 if (!skb) {
5422 /* -ENOMEM, no point in falling back further. */
5423 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5424 goto walk_packet;
5425 }
5426
5427 if (skb_tailroom(skb) >= linear_len + headroom) {
5428 uses_frags = true;
5429 goto use_skb;
5430 }
5431
5432 netdev_info_once(card->dev,
5433 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5434 linear_len + headroom, skb_tailroom(skb));
5435 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
4a71df50 5436 }
17caeaa4 5437
dcdcf867
JW		 5438 linear_len = skb_len;
5439 skb = napi_alloc_skb(napi, linear_len + headroom);
5440 if (!skb) {
17caeaa4 5441 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
dcdcf867
JW		 5442 goto walk_packet;
5443 }
4a71df50 5444
dcdcf867
JW		 5445use_skb:
5446 if (headroom)
5447 skb_reserve(skb, headroom);
7d4faee7 5448walk_packet:
4a71df50 5449 while (skb_len) {
f677fcb9 5450 int data_len = min(skb_len, (int)(element->length - offset));
2db01da8 5451 char *data = phys_to_virt(element->addr) + offset;
f677fcb9
JW		 5452
5453 skb_len -= data_len;
5454 offset += data_len;
7d4faee7 5455
f677fcb9 5456 /* Extract data from current element: */
7d4faee7 5457 if (skb && data_len) {
f677fcb9
JW		 5458 if (linear_len) {
5459 unsigned int copy_len;
5460
5461 copy_len = min_t(unsigned int, linear_len,
5462 data_len);
5463
5464 skb_put_data(skb, data, copy_len);
5465 linear_len -= copy_len;
5466 data_len -= copy_len;
5467 data += copy_len;
5468 }
5469
5470 if (data_len)
5471 qeth_create_skb_frag(skb, data, data_len);
4a71df50 5472 }
f677fcb9
JW		 5473
5474 /* Step forward to next element: */
4a71df50
FB		 5475 if (skb_len) {
5476 if (qeth_is_last_sbale(element)) {
847a50fd 5477 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5478 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7 5479 if (skb) {
dcdcf867
JW		 5480 if (uses_frags)
5481 napi_free_frags(napi);
5482 else
5483 dev_kfree_skb_any(skb);
7d4faee7
JW		 5484 QETH_CARD_STAT_INC(card,
5485 rx_length_errors);
5486 }
c04b116a 5487 return -EMSGSIZE;
4a71df50
FB		 5488 }
5489 element++;
5490 offset = 0;
4a71df50
FB		 5491 }
5492 }
7d4faee7
JW		 5493
5494 /* This packet was skipped, go get another one: */
5495 if (!skb)
5496 goto next_packet;
5497
4a71df50
FB		 5498 *__element = element;
5499 *__offset = offset;
c04b116a 5500
dcdcf867 5501 qeth_receive_skb(card, skb, hdr, uses_frags);
c04b116a
JW		 5502 return 0;
5503}
5504
5505static int qeth_extract_skbs(struct qeth_card *card, int budget,
5506 struct qeth_qdio_buffer *buf, bool *done)
5507{
5508 int work_done = 0;
5509
c04b116a
JW		 5510 *done = false;
5511
5512 while (budget) {
5513 if (qeth_extract_skb(card, buf, &card->rx.b_element,
5514 &card->rx.e_offset)) {
5515 *done = true;
5516 break;
5517 }
5518
5519 work_done++;
5520 budget--;
4a71df50 5521 }
c04b116a
JW		 5522
5523 return work_done;
4a71df50 5524}
4a71df50 5525
d73ef324
JW		 5526int qeth_poll(struct napi_struct *napi, int budget)
5527{
5528 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5529 int work_done = 0;
5530 struct qeth_qdio_buffer *buffer;
d73ef324 5531 int new_budget = budget;
c04b116a 5532 bool done;
d73ef324 5533
d73ef324
JW		 5534 while (1) {
5535 if (!card->rx.b_count) {
5536 card->rx.qdio_err = 0;
5537 card->rx.b_count = qdio_get_next_buffers(
5538 card->data.ccwdev, 0, &card->rx.b_index,
5539 &card->rx.qdio_err);
5540 if (card->rx.b_count <= 0) {
5541 card->rx.b_count = 0;
5542 break;
5543 }
5544 card->rx.b_element =
5545 &card->qdio.in_q->bufs[card->rx.b_index]
5546 .buffer->element[0];
5547 card->rx.e_offset = 0;
5548 }
5549
5550 while (card->rx.b_count) {
5551 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5552 if (!(card->rx.qdio_err &&
5553 qeth_check_qdio_errors(card, buffer->buffer,
5554 card->rx.qdio_err, "qinerr")))
c04b116a
JW		 5555 work_done += qeth_extract_skbs(card, new_budget,
5556 buffer, &done);
d73ef324 5557 else
c04b116a 5558 done = true;
d73ef324
JW		 5559
5560 if (done) {
b0abc4f5 5561 QETH_CARD_STAT_INC(card, rx_bufs);
d73ef324
JW		 5562 qeth_put_buffer_pool_entry(card,
5563 buffer->pool_entry);
5564 qeth_queue_input_buffer(card, card->rx.b_index);
5565 card->rx.b_count--;
5566 if (card->rx.b_count) {
5567 card->rx.b_index =
ec2b559d 5568 QDIO_BUFNR(card->rx.b_index + 1);
d73ef324
JW		 5569 card->rx.b_element =
5570 &card->qdio.in_q
5571 ->bufs[card->rx.b_index]
5572 .buffer->element[0];
5573 card->rx.e_offset = 0;
5574 }
5575 }
5576
5577 if (work_done >= budget)
5578 goto out;
5579 else
5580 new_budget = budget - work_done;
5581 }
5582 }
5583
f9ce416a
JW		 5584 if (napi_complete_done(napi, work_done) &&
5585 qdio_start_irq(CARD_DDEV(card), 0))
5586 napi_schedule(napi);
d73ef324 5587out:
d73ef324
JW		 5588 return work_done;
5589}
5590EXPORT_SYMBOL_GPL(qeth_poll);
5591
e53edf74 5592static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
85e537d8 5593 unsigned int bidx, bool error, int budget)
e53edf74
JW		 5594{
5595 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5596 u8 sflags = buffer->buffer->element[15].sflags;
5597 struct qeth_card *card = queue->card;
5598
5599 if (queue->bufstates && (queue->bufstates[bidx].flags &
5600 QDIO_OUTBUF_STATE_FLAG_PENDING)) {
5601 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
5602
5603 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
5604 QETH_QDIO_BUF_PENDING) ==
5605 QETH_QDIO_BUF_PRIMED)
5606 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5607
5608 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5609
5610 /* prepare the queue slot for re-use: */
5611 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5612 if (qeth_init_qdio_out_buf(queue, bidx)) {
5613 QETH_CARD_TEXT(card, 2, "outofbuf");
5614 qeth_schedule_recovery(card);
5615 }
5616
5617 return;
5618 }
5619
5620 if (card->options.cq == QETH_CQ_ENABLED)
5621 qeth_notify_skbs(queue, buffer,
5622 qeth_compute_cq_notification(sflags, 0));
85e537d8 5623 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 5624}
5625
5626static int qeth_tx_poll(struct napi_struct *napi, int budget)
5627{
5628 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5629 unsigned int queue_no = queue->queue_no;
5630 struct qeth_card *card = queue->card;
5631 struct net_device *dev = card->dev;
5632 unsigned int work_done = 0;
5633 struct netdev_queue *txq;
5634
5635 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5636
5637 while (1) {
5638 unsigned int start, error, i;
96bd6c94
JW		 5639 unsigned int packets = 0;
5640 unsigned int bytes = 0;
e53edf74
JW		 5641 int completed;
5642
5643 if (qeth_out_queue_is_empty(queue)) {
5644 napi_complete(napi);
5645 return 0;
5646 }
5647
5648 /* Give the CPU a breather: */
5649 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5650 QETH_TXQ_STAT_INC(queue, completion_yield);
5651 if (napi_complete_done(napi, 0))
5652 napi_schedule(napi);
5653 return 0;
5654 }
5655
5656 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
5657 &start, &error);
5658 if (completed <= 0) {
5659 /* Ensure we see TX completion for pending work: */
5660 if (napi_complete_done(napi, 0))
5661 qeth_tx_arm_timer(queue);
5662 return 0;
5663 }
5664
5665 for (i = start; i < start + completed; i++) {
96bd6c94 5666 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 5667 unsigned int bidx = QDIO_BUFNR(i);
5668
96bd6c94
JW		 5669 buffer = queue->bufs[bidx];
5670 packets += skb_queue_len(&buffer->skb_list);
5671 bytes += buffer->bytes;
5672
5673 qeth_handle_send_error(card, buffer, error);
85e537d8 5674 qeth_iqd_tx_complete(queue, bidx, error, budget);
e53edf74
JW		 5675 qeth_cleanup_handled_pending(queue, bidx, false);
5676 }
5677
96bd6c94 5678 netdev_tx_completed_queue(txq, packets, bytes);
e53edf74
JW		 5679 atomic_sub(completed, &queue->used_buffers);
5680 work_done += completed;
5681
5682 /* xmit may have observed the full-condition, but not yet
5683 * stopped the txq. In which case the code below won't trigger.
5684 * So before returning, xmit will re-check the txq's fill level
5685 * and wake it up if needed.
5686 */
5687 if (netif_tx_queue_stopped(txq) &&
5688 !qeth_out_queue_is_full(queue))
5689 netif_tx_wake_queue(txq);
5690 }
5691}
5692
ad3cbf61
JW		 5693static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5694{
5695 if (!cmd->hdr.return_code)
5696 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5697 return cmd->hdr.return_code;
5698}
5699
4666d7fb
JW		 5700static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5701 struct qeth_reply *reply,
5702 unsigned long data)
5703{
5704 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5705 struct qeth_ipa_caps *caps = reply->param;
5706
5707 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5708 return -EIO;
4666d7fb
JW		 5709
5710 caps->supported = cmd->data.setassparms.data.caps.supported;
5711 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5712 return 0;
5713}
5714
8f43fb00
TR		 5715int qeth_setassparms_cb(struct qeth_card *card,
5716 struct qeth_reply *reply, unsigned long data)
4d7def2a 5717{
742d4d40 5718 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 5719
5720 QETH_CARD_TEXT(card, 4, "defadpcb");
5721
742d4d40
JW		 5722 if (cmd->hdr.return_code)
5723 return -EIO;
5724
5725 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5726 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
52f82bf1 5727 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
742d4d40 5728 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
52f82bf1 5729 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
4d7def2a
TR		 5730 return 0;
5731}
8f43fb00 5732EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 5733
b475e316
TR		 5734struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5735 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 5736 u16 cmd_code,
5737 unsigned int data_length,
b475e316 5738 enum qeth_prot_versions prot)
4d7def2a 5739{
b9150461
JW		 5740 struct qeth_ipacmd_setassparms *setassparms;
5741 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 5742 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 5743
5744 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 5745 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5746 data_length +
5747 offsetof(struct qeth_ipacmd_setassparms,
5748 data));
5749 if (!iob)
5750 return NULL;
4d7def2a 5751
b9150461
JW		 5752 setassparms = &__ipa_cmd(iob)->data.setassparms;
5753 setassparms->assist_no = ipa_func;
4d7def2a 5754
b9150461
JW		 5755 hdr = &setassparms->hdr;
5756 hdr->length = sizeof(*hdr) + data_length;
5757 hdr->command_code = cmd_code;
4d7def2a
TR		 5758 return iob;
5759}
b475e316 5760EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 5761
a8155b00
KM		 5762int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5763 enum qeth_ipa_funcs ipa_func,
1c696c89 5764 u16 cmd_code, u32 *data,
a8155b00 5765 enum qeth_prot_versions prot)
4d7def2a 5766{
1c696c89 5767 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 5768 struct qeth_cmd_buffer *iob;
5769
a8155b00 5770 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 5771 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 5772 if (!iob)
5773 return -ENOMEM;
4fa55fa9 5774
1c696c89
JW		 5775 if (data)
5776 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 5777 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 5778}
a8155b00 5779EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 5780
4a71df50
FB		 5781static void qeth_unregister_dbf_views(void)
5782{
d11ba0c4
PT		 5783 int x;
5784 for (x = 0; x < QETH_DBF_INFOS; x++) {
5785 debug_unregister(qeth_dbf[x].id);
5786 qeth_dbf[x].id = NULL;
5787 }
4a71df50
FB		 5788}
5789
8e96c51c 5790void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 5791{
5792 char dbf_txt_buf[32];
345aa66e 5793 va_list args;
cd023216 5794
8e6a8285 5795 if (!debug_level_enabled(id, level))
cd023216 5796 return;
345aa66e
PT		 5797 va_start(args, fmt);
5798 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5799 va_end(args);
8e96c51c 5800 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 5801}
5802EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5803
4a71df50
FB		 5804static int qeth_register_dbf_views(void)
5805{
d11ba0c4
PT		 5806 int ret;
5807 int x;
5808
5809 for (x = 0; x < QETH_DBF_INFOS; x++) {
5810 /* register the areas */
5811 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5812 qeth_dbf[x].pages,
5813 qeth_dbf[x].areas,
5814 qeth_dbf[x].len);
5815 if (qeth_dbf[x].id == NULL) {
5816 qeth_unregister_dbf_views();
5817 return -ENOMEM;
5818 }
4a71df50 5819
d11ba0c4
PT		 5820 /* register a view */
5821 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5822 if (ret) {
5823 qeth_unregister_dbf_views();
5824 return ret;
5825 }
4a71df50 5826
d11ba0c4
PT		 5827 /* set a passing level */
5828 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5829 }
4a71df50
FB		 5830
5831 return 0;
5832}
5833
a70fee3b
JW		 5834static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
5835
4a71df50
FB		 5836int qeth_core_load_discipline(struct qeth_card *card,
5837 enum qeth_discipline_id discipline)
5838{
2022e00c 5839 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 5840 switch (discipline) {
5841 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 5842 card->discipline = try_then_request_module(
5843 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 5844 break;
5845 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 5846 card->discipline = try_then_request_module(
5847 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 5848 break;
c70eb09d
JW		 5849 default:
5850 break;
4a71df50 5851 }
a70fee3b 5852 mutex_unlock(&qeth_mod_mutex);
c70eb09d 5853
c041f2d4 5854 if (!card->discipline) {
74eacdb9
FB		 5855 dev_err(&card->gdev->dev, "There is no kernel module to "
5856 "support discipline %d\n", discipline);
a70fee3b 5857 return -EINVAL;
4a71df50 5858 }
a70fee3b 5859
c1a935f6 5860 card->options.layer = discipline;
a70fee3b 5861 return 0;
4a71df50
FB		 5862}
5863
5864void qeth_core_free_discipline(struct qeth_card *card)
5865{
4fda3354 5866 if (IS_LAYER2(card))
c041f2d4 5867 symbol_put(qeth_l2_discipline);
4a71df50 5868 else
c041f2d4 5869 symbol_put(qeth_l3_discipline);
c1a935f6 5870 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 5871 card->discipline = NULL;
4a71df50
FB		 5872}
5873
2d2ebb3e 5874const struct device_type qeth_generic_devtype = {
b7169c51
SO		 5875 .name = "qeth_generic",
5876 .groups = qeth_generic_attr_groups,
5877};
2d2ebb3e
JW		 5878EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5879
b7169c51
SO		 5880static const struct device_type qeth_osn_devtype = {
5881 .name = "qeth_osn",
5882 .groups = qeth_osn_attr_groups,
5883};
5884
819dc537
SR		 5885#define DBF_NAME_LEN 20
5886
5887struct qeth_dbf_entry {
5888 char dbf_name[DBF_NAME_LEN];
5889 debug_info_t *dbf_info;
5890 struct list_head dbf_list;
5891};
5892
5893static LIST_HEAD(qeth_dbf_list);
5894static DEFINE_MUTEX(qeth_dbf_list_mutex);
5895
5896static debug_info_t *qeth_get_dbf_entry(char *name)
5897{
5898 struct qeth_dbf_entry *entry;
5899 debug_info_t *rc = NULL;
5900
5901 mutex_lock(&qeth_dbf_list_mutex);
5902 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5903 if (strcmp(entry->dbf_name, name) == 0) {
5904 rc = entry->dbf_info;
5905 break;
5906 }
5907 }
5908 mutex_unlock(&qeth_dbf_list_mutex);
5909 return rc;
5910}
5911
5912static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5913{
5914 struct qeth_dbf_entry *new_entry;
5915
5916 card->debug = debug_register(name, 2, 1, 8);
5917 if (!card->debug) {
5918 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5919 goto err;
5920 }
5921 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5922 goto err_dbg;
5923 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5924 if (!new_entry)
5925 goto err_dbg;
5926 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5927 new_entry->dbf_info = card->debug;
5928 mutex_lock(&qeth_dbf_list_mutex);
5929 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5930 mutex_unlock(&qeth_dbf_list_mutex);
5931
5932 return 0;
5933
5934err_dbg:
5935 debug_unregister(card->debug);
5936err:
5937 return -ENOMEM;
5938}
5939
5940static void qeth_clear_dbf_list(void)
5941{
5942 struct qeth_dbf_entry *entry, *tmp;
5943
5944 mutex_lock(&qeth_dbf_list_mutex);
5945 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5946 list_del(&entry->dbf_list);
5947 debug_unregister(entry->dbf_info);
5948 kfree(entry);
5949 }
5950 mutex_unlock(&qeth_dbf_list_mutex);
5951}
5952
d3d1b205
JW		 5953static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5954{
5955 struct net_device *dev;
5956
5957 switch (card->info.type) {
5958 case QETH_CARD_TYPE_IQD:
3a18d754
JW		 5959 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5960 ether_setup, QETH_MAX_QUEUES, 1);
d3d1b205 5961 break;
73dc2daf
JW		 5962 case QETH_CARD_TYPE_OSM:
5963 dev = alloc_etherdev(0);
5964 break;
d3d1b205
JW		 5965 case QETH_CARD_TYPE_OSN:
5966 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5967 break;
5968 default:
73dc2daf 5969 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
d3d1b205
JW		 5970 }
5971
5972 if (!dev)
5973 return NULL;
5974
5975 dev->ml_priv = card;
5976 dev->watchdog_timeo = QETH_TX_TIMEOUT;
72f219da 5977 dev->min_mtu = IS_OSN(card) ? 64 : 576;
8ce7a9e0
JW		 5978 /* initialized when device first goes online: */
5979 dev->max_mtu = 0;
5980 dev->mtu = 0;
d3d1b205
JW		 5981 SET_NETDEV_DEV(dev, &card->gdev->dev);
5982 netif_carrier_off(dev);
5f89eca5 5983
d896ac62
JW		 5984 if (IS_OSN(card)) {
5985 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5986 } else {
5987 dev->ethtool_ops = &qeth_ethtool_ops;
5f89eca5
JW		 5988 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5989 dev->hw_features |= NETIF_F_SG;
5990 dev->vlan_features |= NETIF_F_SG;
3a18d754 5991 if (IS_IQD(card)) {
04db741d 5992 dev->features |= NETIF_F_SG;
bd966839
JW		 5993 if (netif_set_real_num_tx_queues(dev,
5994 QETH_IQD_MIN_TXQ)) {
5995 free_netdev(dev);
5996 return NULL;
5997 }
3a18d754 5998 }
5f89eca5
JW		 5999 }
6000
d3d1b205
JW		 6001 return dev;
6002}
6003
6004struct net_device *qeth_clone_netdev(struct net_device *orig)
6005{
6006 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6007
6008 if (!clone)
6009 return NULL;
6010
6011 clone->dev_port = orig->dev_port;
6012 return clone;
6013}
6014
4a71df50
FB		 6015static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6016{
6017 struct qeth_card *card;
6018 struct device *dev;
6019 int rc;
c70eb09d 6020 enum qeth_discipline_id enforced_disc;
819dc537 6021 char dbf_name[DBF_NAME_LEN];
4a71df50 6022
d11ba0c4 6023 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 6024
6025 dev = &gdev->dev;
6026 if (!get_device(dev))
6027 return -ENODEV;
6028
2a0217d5 6029 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 6030
121ca39a 6031 card = qeth_alloc_card(gdev);
4a71df50 6032 if (!card) {
d11ba0c4 6033 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 6034 rc = -ENOMEM;
6035 goto err_dev;
6036 }
af039068
CO		 6037
6038 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6039 dev_name(&gdev->dev));
819dc537 6040 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 6041 if (!card->debug) {
819dc537
SR		 6042 rc = qeth_add_dbf_entry(card, dbf_name);
6043 if (rc)
6044 goto err_card;
af039068 6045 }
af039068 6046
95f4d8b7 6047 qeth_setup_card(card);
d3d1b205 6048 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 6049 if (!card->dev) {
6050 rc = -ENOMEM;
d3d1b205 6051 goto err_card;
778b1ac7 6052 }
d3d1b205 6053
73dc2daf
JW		 6054 card->qdio.no_out_queues = card->dev->num_tx_queues;
6055 rc = qeth_update_from_chp_desc(card);
6056 if (rc)
6057 goto err_chp_desc;
c70eb09d 6058 qeth_determine_capabilities(card);
09ac887f
JW		 6059 qeth_set_blkt_defaults(card);
6060
c70eb09d
JW		 6061 enforced_disc = qeth_enforce_discipline(card);
6062 switch (enforced_disc) {
6063 case QETH_DISCIPLINE_UNDETERMINED:
6064 gdev->dev.type = &qeth_generic_devtype;
6065 break;
6066 default:
6067 card->info.layer_enforced = true;
6068 rc = qeth_core_load_discipline(card, enforced_disc);
5113fec0 6069 if (rc)
d3d1b205 6070 goto err_load;
2d2ebb3e 6071
379ac99e
JW		 6072 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
6073 card->discipline->devtype;
c041f2d4 6074 rc = card->discipline->setup(card->gdev);
4a71df50 6075 if (rc)
5113fec0 6076 goto err_disc;
2d2ebb3e 6077 break;
4a71df50
FB		 6078 }
6079
4a71df50
FB		 6080 return 0;
6081
5113fec0
UB		 6082err_disc:
6083 qeth_core_free_discipline(card);
d3d1b205 6084err_load:
a4cdc9ba 6085err_chp_desc:
73dc2daf 6086 free_netdev(card->dev);
4a71df50
FB		 6087err_card:
6088 qeth_core_free_card(card);
6089err_dev:
6090 put_device(dev);
6091 return rc;
6092}
6093
6094static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6095{
4a71df50
FB		 6096 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6097
57a688aa 6098 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 6099
c041f2d4
SO		 6100 if (card->discipline) {
6101 card->discipline->remove(gdev);
9dc48ccc
UB		 6102 qeth_core_free_discipline(card);
6103 }
6104
8311c7a2
JW		 6105 qeth_free_qdio_queues(card);
6106
d3d1b205 6107 free_netdev(card->dev);
4a71df50 6108 qeth_core_free_card(card);
4a71df50 6109 put_device(&gdev->dev);
4a71df50
FB		 6110}
6111
6112static int qeth_core_set_online(struct ccwgroup_device *gdev)
6113{
6114 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6115 int rc = 0;
c70eb09d 6116 enum qeth_discipline_id def_discipline;
4a71df50 6117
c041f2d4 6118 if (!card->discipline) {
379ac99e
JW		 6119 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6120 QETH_DISCIPLINE_LAYER2;
4a71df50
FB		 6121 rc = qeth_core_load_discipline(card, def_discipline);
6122 if (rc)
6123 goto err;
c041f2d4 6124 rc = card->discipline->setup(card->gdev);
9111e788
UB		 6125 if (rc) {
6126 qeth_core_free_discipline(card);
4a71df50 6127 goto err;
9111e788 6128 }
4a71df50 6129 }
91003f35
JW		 6130
6131 rc = qeth_set_online(card);
4a71df50
FB		 6132err:
6133 return rc;
6134}
6135
6136static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6137{
6138 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
91003f35
JW		 6139
6140 return qeth_set_offline(card, false);
4a71df50
FB		 6141}
6142
6143static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6144{
6145 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
96d1bb53
JW		 6146 qeth_set_allowed_threads(card, 0, 1);
6147 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6148 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6149 qeth_qdio_clear_card(card, 0);
41c47da3 6150 qeth_drain_output_queues(card);
96d1bb53 6151 qdio_free(CARD_DDEV(card));
4a71df50
FB		 6152}
6153
c4733c32 6154static int qeth_suspend(struct ccwgroup_device *gdev)
bbcfcdc8
FB		 6155{
6156 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
bbcfcdc8 6157
c4733c32
JW		 6158 qeth_set_allowed_threads(card, 0, 1);
6159 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
6160 if (gdev->state == CCWGROUP_OFFLINE)
6161 return 0;
6162
91003f35 6163 qeth_set_offline(card, false);
bbcfcdc8
FB		 6164 return 0;
6165}
6166
c4733c32 6167static int qeth_resume(struct ccwgroup_device *gdev)
bbcfcdc8
FB		 6168{
6169 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c4733c32
JW		 6170 int rc;
6171
91003f35 6172 rc = qeth_set_online(card);
c4733c32
JW		 6173
6174 qeth_set_allowed_threads(card, 0xffffffff, 0);
6175 if (rc)
6176 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
6177 return rc;
bbcfcdc8
FB		 6178}
6179
36369569
GKH		 6180static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6181 size_t count)
4a71df50
FB		 6182{
6183 int err;
4a71df50 6184
6d8769ab
JW		 6185 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6186 buf);
b7169c51
SO		 6187
6188 return err ? err : count;
6189}
36369569 6190static DRIVER_ATTR_WO(group);
4a71df50 6191
f47e2256
SO		 6192static struct attribute *qeth_drv_attrs[] = {
6193 &driver_attr_group.attr,
6194 NULL,
6195};
6196static struct attribute_group qeth_drv_attr_group = {
6197 .attrs = qeth_drv_attrs,
6198};
6199static const struct attribute_group *qeth_drv_attr_groups[] = {
6200 &qeth_drv_attr_group,
6201 NULL,
6202};
6203
6d8769ab
JW		 6204static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6205 .driver = {
6206 .groups = qeth_drv_attr_groups,
6207 .owner = THIS_MODULE,
6208 .name = "qeth",
6209 },
6210 .ccw_driver = &qeth_ccw_driver,
6211 .setup = qeth_core_probe_device,
6212 .remove = qeth_core_remove_device,
6213 .set_online = qeth_core_set_online,
6214 .set_offline = qeth_core_set_offline,
6215 .shutdown = qeth_core_shutdown,
6216 .prepare = NULL,
6217 .complete = NULL,
c4733c32
JW		 6218 .freeze = qeth_suspend,
6219 .thaw = qeth_resume,
6220 .restore = qeth_resume,
6d8769ab
JW		 6221};
6222
d7d18da1
JW		 6223struct qeth_card *qeth_get_card_by_busid(char *bus_id)
6224{
6225 struct ccwgroup_device *gdev;
6226 struct qeth_card *card;
6227
6228 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
6229 if (!gdev)
6230 return NULL;
6231
6232 card = dev_get_drvdata(&gdev->dev);
6233 put_device(&gdev->dev);
6234 return card;
6235}
6236EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
6237
942d6984
JW		 6238int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6239{
6240 struct qeth_card *card = dev->ml_priv;
6241 struct mii_ioctl_data *mii_data;
6242 int rc = 0;
6243
6244 if (!card)
6245 return -ENODEV;
6246
942d6984
JW		 6247 switch (cmd) {
6248 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6249 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
6250 break;
6251 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 6252 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6253 !IS_VM_NIC(card))
942d6984 6254 return 1;
379ac99e 6255 return 0;
942d6984
JW		 6256 case SIOCGMIIPHY:
6257 mii_data = if_mii(rq);
6258 mii_data->phy_id = 0;
6259 break;
6260 case SIOCGMIIREG:
6261 mii_data = if_mii(rq);
6262 if (mii_data->phy_id != 0)
6263 rc = -EINVAL;
6264 else
6265 mii_data->val_out = qeth_mdio_read(dev,
6266 mii_data->phy_id, mii_data->reg_num);
6267 break;
6268 case SIOC_QETH_QUERY_OAT:
6269 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
6270 break;
6271 default:
6272 if (card->discipline->do_ioctl)
6273 rc = card->discipline->do_ioctl(dev, rq, cmd);
6274 else
6275 rc = -EOPNOTSUPP;
6276 }
6277 if (rc)
6278 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6279 return rc;
6280}
6281EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6282
4386e34f
JW		 6283static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6284 unsigned long data)
c9475369
TR		 6285{
6286 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 6287 u32 *features = reply->param;
c9475369 6288
ad3cbf61 6289 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6290 return -EIO;
c9475369 6291
4386e34f 6292 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 6293 return 0;
6294}
6295
4386e34f
JW		 6296static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6297 enum qeth_prot_versions prot)
c9475369 6298{
1c696c89
JW		 6299 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6300 NULL, prot);
c9475369
TR		 6301}
6302
4386e34f
JW		 6303static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6304 enum qeth_prot_versions prot)
4d7def2a 6305{
571f9dd8 6306 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 6307 struct qeth_cmd_buffer *iob;
6308 struct qeth_ipa_caps caps;
6309 u32 features;
4d7def2a
TR		 6310 int rc;
6311
7e83747d
JW		 6312 /* some L3 HW requires combined L3+L4 csum offload: */
6313 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6314 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 6315 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 6316
4386e34f
JW		 6317 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6318 prot);
6319 if (!iob)
6320 return -ENOMEM;
6321
6322 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6323 if (rc)
4d7def2a 6324 return rc;
7e83747d 6325
4386e34f
JW		 6326 if ((required_features & features) != required_features) {
6327 qeth_set_csum_off(card, cstype, prot);
6328 return -EOPNOTSUPP;
6329 }
7e83747d 6330
b9150461
JW		 6331 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6332 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 6333 prot);
4386e34f
JW		 6334 if (!iob) {
6335 qeth_set_csum_off(card, cstype, prot);
6336 return -ENOMEM;
f9d8e6dc 6337 }
4386e34f
JW		 6338
6339 if (features & QETH_IPA_CHECKSUM_LP2LP)
6340 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6341 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6342 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6343 if (rc) {
4386e34f 6344 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6345 return rc;
6346 }
8f43fb00 6347
4386e34f
JW		 6348 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6349 !qeth_ipa_caps_enabled(&caps, required_features)) {
6350 qeth_set_csum_off(card, cstype, prot);
6351 return -EOPNOTSUPP;
6352 }
6353
a8155b00
KM		 6354 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6355 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
4386e34f
JW		 6356 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
6357 cstype == IPA_OUTBOUND_CHECKSUM)
6358 dev_warn(&card->gdev->dev,
6359 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6360 QETH_CARD_IFNAME(card));
4d7def2a
TR		 6361 return 0;
6362}
6363
a8155b00
KM		 6364static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6365 enum qeth_prot_versions prot)
4d7def2a 6366{
742d4d40
JW		 6367 return on ? qeth_set_csum_on(card, cstype, prot) :
6368 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6369}
4d7def2a 6370
4666d7fb
JW		 6371static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6372 unsigned long data)
6373{
6374 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6375 struct qeth_tso_start_data *tso_data = reply->param;
6376
6377 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6378 return -EIO;
4666d7fb
JW		 6379
6380 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6381 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6382 return 0;
6383}
6384
1f83b817
JW		 6385static int qeth_set_tso_off(struct qeth_card *card,
6386 enum qeth_prot_versions prot)
4d7def2a 6387{
1f83b817 6388 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6389 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6390}
4d7def2a 6391
1f83b817
JW		 6392static int qeth_set_tso_on(struct qeth_card *card,
6393 enum qeth_prot_versions prot)
6394{
4666d7fb
JW		 6395 struct qeth_tso_start_data tso_data;
6396 struct qeth_cmd_buffer *iob;
6397 struct qeth_ipa_caps caps;
6398 int rc;
6399
6400 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6401 IPA_CMD_ASS_START, 0, prot);
6402 if (!iob)
6403 return -ENOMEM;
6404
4fa55fa9 6405 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6406 if (rc)
6407 return rc;
6408
6409 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6410 qeth_set_tso_off(card, prot);
6411 return -EOPNOTSUPP;
6412 }
6413
6414 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6415 IPA_CMD_ASS_ENABLE,
6416 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6417 if (!iob) {
6418 qeth_set_tso_off(card, prot);
6419 return -ENOMEM;
6420 }
6421
6422 /* enable TSO capability */
4fa55fa9
JW		 6423 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6424 QETH_IPA_LARGE_SEND_TCP;
6425 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6426 if (rc) {
6427 qeth_set_tso_off(card, prot);
6428 return rc;
6429 }
6430
6431 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6432 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6433 qeth_set_tso_off(card, prot);
6434 return -EOPNOTSUPP;
6435 }
6436
6437 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6438 tso_data.mss);
6439 return 0;
1f83b817 6440}
4d7def2a 6441
1f83b817
JW		 6442static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6443 enum qeth_prot_versions prot)
6444{
742d4d40 6445 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6446}
8f43fb00 6447
d7e6ed97
KM		 6448static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6449{
6450 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6451 int rc_ipv6;
6452
6453 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6454 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6455 QETH_PROT_IPV4);
6456 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6457 /* no/one Offload Assist available, so the rc is trivial */
6458 return rc_ipv4;
ce344356 6459
d7e6ed97
KM		 6460 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6461 QETH_PROT_IPV6);
6462
6463 if (on)
6464 /* enable: success if any Assist is active */
6465 return (rc_ipv6) ? rc_ipv4 : 0;
6466
6467 /* disable: failure if any Assist is still active */
6468 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6469}
6470
ce344356 6471/**
d025da9e
JW		 6472 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6473 * @dev: a net_device
ce344356 6474 */
d025da9e 6475void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6476{
6477 struct qeth_card *card = dev->ml_priv;
d025da9e 6478 netdev_features_t features;
e830baa9 6479
d025da9e 6480 features = dev->features;
5fc692a7 6481 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6482 * netdev_update_features() will restart them.
6483 */
5fc692a7
JW		 6484 dev->features &= ~dev->hw_features;
6485 /* toggle VLAN filter, so that VIDs are re-programmed: */
6486 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6487 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6488 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6489 }
ce344356 6490 netdev_update_features(dev);
d025da9e
JW		 6491 if (features != dev->features)
6492 dev_warn(&card->gdev->dev,
6493 "Device recovery failed to restore all offload features\n");
e830baa9 6494}
d025da9e 6495EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6496
8f43fb00
TR		 6497int qeth_set_features(struct net_device *dev, netdev_features_t features)
6498{
6499 struct qeth_card *card = dev->ml_priv;
6c7cd712 6500 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6501 int rc = 0;
6502
57a688aa
JW		 6503 QETH_CARD_TEXT(card, 2, "setfeat");
6504 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6505
6c7cd712 6506 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00
KM		 6507 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6508 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6c7cd712
HW		 6509 if (rc)
6510 changed ^= NETIF_F_IP_CSUM;
6511 }
571f9dd8
KM		 6512 if (changed & NETIF_F_IPV6_CSUM) {
6513 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6514 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6515 if (rc)
6516 changed ^= NETIF_F_IPV6_CSUM;
6517 }
d7e6ed97
KM		 6518 if (changed & NETIF_F_RXCSUM) {
6519 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6520 if (rc)
6521 changed ^= NETIF_F_RXCSUM;
6522 }
1f83b817
JW		 6523 if (changed & NETIF_F_TSO) {
6524 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6525 QETH_PROT_IPV4);
6c7cd712
HW		 6526 if (rc)
6527 changed ^= NETIF_F_TSO;
6528 }
82bf5c08
JW		 6529 if (changed & NETIF_F_TSO6) {
6530 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6531 QETH_PROT_IPV6);
6532 if (rc)
6533 changed ^= NETIF_F_TSO6;
6534 }
6c7cd712
HW		 6535
6536 /* everything changed successfully? */
6537 if ((dev->features ^ features) == changed)
6538 return 0;
6539 /* something went wrong. save changed features and return error */
6540 dev->features ^= changed;
6541 return -EIO;
8f43fb00
TR		 6542}
6543EXPORT_SYMBOL_GPL(qeth_set_features);
6544
6545netdev_features_t qeth_fix_features(struct net_device *dev,
6546 netdev_features_t features)
6547{
6548 struct qeth_card *card = dev->ml_priv;
6549
57a688aa 6550 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6551 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6552 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6553 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6554 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6555 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6556 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6557 features &= ~NETIF_F_RXCSUM;
cf536ffe 6558 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6559 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6560 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6561 features &= ~NETIF_F_TSO6;
e6e771b3 6562
57a688aa 6563 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6564 return features;
6565}
6566EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6567
6d69b1f1
JW		 6568netdev_features_t qeth_features_check(struct sk_buff *skb,
6569 struct net_device *dev,
6570 netdev_features_t features)
6571{
6572 /* GSO segmentation builds skbs with
6573 * a (small) linear part for the headers, and
6574 * page frags for the data.
6575 * Compared to a linear skb, the header-only part consumes an
6576 * additional buffer element. This reduces buffer utilization, and
6577 * hurts throughput. So compress small segments into one element.
6578 */
6579 if (netif_needs_gso(skb, features)) {
6580 /* match skb_segment(): */
6581 unsigned int doffset = skb->data - skb_mac_header(skb);
6582 unsigned int hsize = skb_shinfo(skb)->gso_size;
6583 unsigned int hroom = skb_headroom(skb);
6584
6585 /* linearize only if resulting skb allocations are order-0: */
6586 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6587 features &= ~NETIF_F_SG;
6588 }
6589
6590 return vlan_features_check(skb, features);
6591}
6592EXPORT_SYMBOL_GPL(qeth_features_check);
6593
b0abc4f5
JW		 6594void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6595{
6596 struct qeth_card *card = dev->ml_priv;
6597 struct qeth_qdio_out_q *queue;
6598 unsigned int i;
6599
6600 QETH_CARD_TEXT(card, 5, "getstat");
6601
6602 stats->rx_packets = card->stats.rx_packets;
6603 stats->rx_bytes = card->stats.rx_bytes;
845ef904 6604 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 6605 card->stats.rx_frame_errors +
845ef904
JW		 6606 card->stats.rx_fifo_errors;
6607 stats->rx_dropped = card->stats.rx_dropped_nomem +
5b55633f
JW		 6608 card->stats.rx_dropped_notsupp +
6609 card->stats.rx_dropped_runt;
b0abc4f5 6610 stats->multicast = card->stats.rx_multicast;
845ef904 6611 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 6612 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 6613 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 6614
6615 for (i = 0; i < card->qdio.no_out_queues; i++) {
6616 queue = card->qdio.out_qs[i];
6617
6618 stats->tx_packets += queue->stats.tx_packets;
6619 stats->tx_bytes += queue->stats.tx_bytes;
6620 stats->tx_errors += queue->stats.tx_errors;
6621 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 6622 }
6623}
6624EXPORT_SYMBOL_GPL(qeth_get_stats64);
6625
3a18d754
JW		 6626u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6627 u8 cast_type, struct net_device *sb_dev)
6628{
6629 if (cast_type != RTN_UNICAST)
6630 return QETH_IQD_MCAST_TXQ;
6631 return QETH_IQD_MIN_UCAST_TXQ;
6632}
6633EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6634
e6e771b3 6635int qeth_open(struct net_device *dev)
e22355ea
JW		 6636{
6637 struct qeth_card *card = dev->ml_priv;
6638
6639 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea
JW		 6640
6641 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6642 return -EIO;
6643
6644 card->data.state = CH_STATE_UP;
3a18d754 6645 netif_tx_start_all_queues(dev);
e22355ea
JW		 6646
6647 napi_enable(&card->napi);
6648 local_bh_disable();
6649 napi_schedule(&card->napi);
e53edf74
JW		 6650 if (IS_IQD(card)) {
6651 struct qeth_qdio_out_q *queue;
6652 unsigned int i;
6653
6654 qeth_for_each_output_queue(card, queue, i) {
6655 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
6656 QETH_NAPI_WEIGHT);
6657 napi_enable(&queue->napi);
6658 napi_schedule(&queue->napi);
6659 }
6660 }
e22355ea
JW		 6661 /* kick-start the NAPI softirq: */
6662 local_bh_enable();
6663 return 0;
6664}
e22355ea
JW		 6665EXPORT_SYMBOL_GPL(qeth_open);
6666
6667int qeth_stop(struct net_device *dev)
6668{
6669 struct qeth_card *card = dev->ml_priv;
6670
6671 QETH_CARD_TEXT(card, 4, "qethstop");
e53edf74
JW		 6672 if (IS_IQD(card)) {
6673 struct qeth_qdio_out_q *queue;
6674 unsigned int i;
6675
6676 /* Quiesce the NAPI instances: */
6677 qeth_for_each_output_queue(card, queue, i) {
6678 napi_disable(&queue->napi);
6679 del_timer_sync(&queue->timer);
6680 }
6681
6682 /* Stop .ndo_start_xmit, might still access queue->napi. */
6683 netif_tx_disable(dev);
6684
6685 /* Queues may get re-allocated, so remove the NAPIs here. */
6686 qeth_for_each_output_queue(card, queue, i)
6687 netif_napi_del(&queue->napi);
6688 } else {
6689 netif_tx_disable(dev);
6690 }
6691
0f7aedbd 6692 napi_disable(&card->napi);
e22355ea
JW		 6693 return 0;
6694}
6695EXPORT_SYMBOL_GPL(qeth_stop);
6696
4a71df50
FB		 6697static int __init qeth_core_init(void)
6698{
6699 int rc;
6700
74eacdb9 6701 pr_info("loading core functions\n");
4a71df50
FB		 6702
6703 rc = qeth_register_dbf_views();
6704 if (rc)
a936b1ef 6705 goto dbf_err;
035da16f 6706 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 6707 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 6708 if (rc)
6709 goto register_err;
55494264
JW		 6710 qeth_core_header_cache =
6711 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6712 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6713 0, NULL);
683d718a
FB		 6714 if (!qeth_core_header_cache) {
6715 rc = -ENOMEM;
6716 goto slab_err;
6717 }
0da9581d
EL		 6718 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6719 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6720 if (!qeth_qdio_outbuf_cache) {
6721 rc = -ENOMEM;
6722 goto cqslab_err;
6723 }
afb6ac59
SO		 6724 rc = ccw_driver_register(&qeth_ccw_driver);
6725 if (rc)
6726 goto ccw_err;
afb6ac59
SO		 6727 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6728 if (rc)
6729 goto ccwgroup_err;
0da9581d 6730
683d718a 6731 return 0;
afb6ac59
SO		 6732
6733ccwgroup_err:
6734 ccw_driver_unregister(&qeth_ccw_driver);
6735ccw_err:
6736 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 6737cqslab_err:
6738 kmem_cache_destroy(qeth_core_header_cache);
683d718a 6739slab_err:
035da16f 6740 root_device_unregister(qeth_core_root_dev);
4a71df50 6741register_err:
4a71df50 6742 qeth_unregister_dbf_views();
a936b1ef 6743dbf_err:
74eacdb9 6744 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 6745 return rc;
6746}
6747
6748static void __exit qeth_core_exit(void)
6749{
819dc537 6750 qeth_clear_dbf_list();
4a71df50
FB		 6751 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6752 ccw_driver_unregister(&qeth_ccw_driver);
0da9581d 6753 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 6754 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 6755 root_device_unregister(qeth_core_root_dev);
4a71df50 6756 qeth_unregister_dbf_views();
74eacdb9 6757 pr_info("core functions removed\n");
4a71df50
FB		 6758}
6759
6760module_init(qeth_core_init);
6761module_exit(qeth_core_exit);
6762MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6763MODULE_DESCRIPTION("qeth core functions");
6764MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)