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Merge tag 'io_uring-5.7-2020-05-22' of git://git.kernel.dk/linux-block
[thirdparty/linux.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++) {
714c9108 247 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
0f75e149
JW		 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++) {
86e7a4e4
JW		 541 void *data = phys_to_virt(aob->sba[i]);
542
543 if (data && buffer->is_header[i])
544 kmem_cache_free(qeth_core_header_cache, data);
ce28867f
JW		 545 }
546 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
72861ae7 547
0da9581d
EL		 548 qdio_release_aob(aob);
549}
550
40554895
JW		 551static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
552 void *data)
45ca2fd6
JW		 553{
554 ccw->cmd_code = cmd_code;
40554895 555 ccw->flags = flags | CCW_FLAG_SLI;
45ca2fd6
JW		 556 ccw->count = len;
557 ccw->cda = (__u32) __pa(data);
558}
559
17bf8c9b 560static int __qeth_issue_next_read(struct qeth_card *card)
4a71df50 561{
d9b9f40b
JW		 562 struct qeth_cmd_buffer *iob = card->read_cmd;
563 struct qeth_channel *channel = iob->channel;
564 struct ccw1 *ccw = __ccw_from_cmd(iob);
750b1625 565 int rc;
4a71df50 566
847a50fd 567 QETH_CARD_TEXT(card, 5, "issnxrd");
750b1625 568 if (channel->state != CH_STATE_UP)
4a71df50 569 return -EIO;
988a747d 570
d9b9f40b
JW		 571 memset(iob->data, 0, iob->length);
572 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
988a747d 573 iob->callback = qeth_issue_next_read_cb;
d9b9f40b
JW		 574 /* keep the cmd alive after completion: */
575 qeth_get_cmd(iob);
576
847a50fd 577 QETH_CARD_TEXT(card, 6, "noirqpnd");
40554895 578 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
f9e50b02
JW		 579 if (!rc) {
580 channel->active_cmd = iob;
581 } else {
e19e5be8
JW		 582 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
583 rc, CARD_DEVID(card));
7359393f 584 qeth_unlock_channel(card, channel);
c3b2218d 585 qeth_put_cmd(iob);
908abbb5 586 card->read_or_write_problem = 1;
4a71df50 587 qeth_schedule_recovery(card);
4a71df50
FB		 588 }
589 return rc;
590}
591
17bf8c9b
JW		 592static int qeth_issue_next_read(struct qeth_card *card)
593{
594 int ret;
595
596 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
597 ret = __qeth_issue_next_read(card);
598 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
599
600 return ret;
601}
602
308946b0
JW		 603static void qeth_enqueue_cmd(struct qeth_card *card,
604 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 605{
606 spin_lock_irq(&card->lock);
308946b0 607 list_add_tail(&iob->list, &card->cmd_waiter_list);
0951c6ba
JW		 608 spin_unlock_irq(&card->lock);
609}
610
308946b0
JW		 611static void qeth_dequeue_cmd(struct qeth_card *card,
612 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 613{
614 spin_lock_irq(&card->lock);
308946b0 615 list_del(&iob->list);
0951c6ba
JW		 616 spin_unlock_irq(&card->lock);
617}
618
308946b0 619void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
0951c6ba 620{
308946b0
JW		 621 iob->rc = reason;
622 complete(&iob->done);
0951c6ba 623}
308946b0 624EXPORT_SYMBOL_GPL(qeth_notify_cmd);
0951c6ba 625
d11ba0c4 626static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
4a71df50
FB		 627 struct qeth_card *card)
628{
048a7f8b 629 const char *ipa_name;
d11ba0c4 630 int com = cmd->hdr.command;
4a71df50 631 ipa_name = qeth_get_ipa_cmd_name(com);
e19e5be8 632
d11ba0c4 633 if (rc)
e19e5be8
JW		 634 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
635 ipa_name, com, CARD_DEVID(card), rc,
636 qeth_get_ipa_msg(rc));
d11ba0c4 637 else
e19e5be8
JW		 638 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
639 ipa_name, com, CARD_DEVID(card));
4a71df50
FB		 640}
641
642static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 643 struct qeth_ipa_cmd *cmd)
4a71df50 644{
847a50fd 645 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 646
647 if (IS_IPA_REPLY(cmd)) {
648 if (cmd->hdr.command != IPA_CMD_SETCCID &&
649 cmd->hdr.command != IPA_CMD_DELCCID &&
650 cmd->hdr.command != IPA_CMD_MODCCID &&
651 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
652 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
653 return cmd;
654 }
655
656 /* handle unsolicited event: */
657 switch (cmd->hdr.command) {
658 case IPA_CMD_STOPLAN:
659 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
660 dev_err(&card->gdev->dev,
661 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
662 QETH_CARD_IFNAME(card));
dcef5cad 663 schedule_work(&card->close_dev_work);
4a71df50 664 } else {
d19b93f4
JW		 665 dev_warn(&card->gdev->dev,
666 "The link for interface %s on CHPID 0x%X failed\n",
667 QETH_CARD_IFNAME(card), card->info.chpid);
668 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 669 netif_carrier_off(card->dev);
4a71df50 670 }
d19b93f4
JW		 671 return NULL;
672 case IPA_CMD_STARTLAN:
673 dev_info(&card->gdev->dev,
674 "The link for %s on CHPID 0x%X has been restored\n",
675 QETH_CARD_IFNAME(card), card->info.chpid);
d19b93f4
JW		 676 if (card->info.hwtrap)
677 card->info.hwtrap = 2;
678 qeth_schedule_recovery(card);
679 return NULL;
680 case IPA_CMD_SETBRIDGEPORT_IQD:
681 case IPA_CMD_SETBRIDGEPORT_OSA:
682 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
683 if (card->discipline->control_event_handler(card, cmd))
684 return cmd;
685 return NULL;
686 case IPA_CMD_MODCCID:
687 return cmd;
688 case IPA_CMD_REGISTER_LOCAL_ADDR:
689 QETH_CARD_TEXT(card, 3, "irla");
690 return NULL;
691 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
692 QETH_CARD_TEXT(card, 3, "urla");
693 return NULL;
694 default:
695 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
696 return cmd;
4a71df50 697 }
4a71df50
FB		 698}
699
700void qeth_clear_ipacmd_list(struct qeth_card *card)
701{
308946b0 702 struct qeth_cmd_buffer *iob;
4a71df50
FB		 703 unsigned long flags;
704
847a50fd 705 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 706
707 spin_lock_irqsave(&card->lock, flags);
308946b0
JW		 708 list_for_each_entry(iob, &card->cmd_waiter_list, list)
709 qeth_notify_cmd(iob, -EIO);
4a71df50
FB		 710 spin_unlock_irqrestore(&card->lock, flags);
711}
712EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
713
5113fec0
UB		 714static int qeth_check_idx_response(struct qeth_card *card,
715 unsigned char *buffer)
4a71df50 716{
d11ba0c4 717 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
2e3d7fa5 718 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
e19e5be8 719 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 720 buffer[4]);
847a50fd
CO		 721 QETH_CARD_TEXT(card, 2, "ckidxres");
722 QETH_CARD_TEXT(card, 2, " idxterm");
2e3d7fa5
JW		 723 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
724 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
725 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
5113fec0 726 dev_err(&card->gdev->dev,
2e3d7fa5
JW		 727 "The device does not support the configured transport mode\n");
728 return -EPROTONOSUPPORT;
5113fec0 729 }
4a71df50
FB		 730 return -EIO;
731 }
732 return 0;
733}
734
c3b2218d 735void qeth_put_cmd(struct qeth_cmd_buffer *iob)
d9b9f40b
JW		 736{
737 if (refcount_dec_and_test(&iob->ref_count)) {
d9b9f40b
JW		 738 kfree(iob->data);
739 kfree(iob);
740 }
741}
c3b2218d 742EXPORT_SYMBOL_GPL(qeth_put_cmd);
4a71df50 743
8f6637b8 744static void qeth_release_buffer_cb(struct qeth_card *card,
12fc286f
JW		 745 struct qeth_cmd_buffer *iob,
746 unsigned int data_length)
8f6637b8 747{
c3b2218d 748 qeth_put_cmd(iob);
8f6637b8
JW		 749}
750
54daaca7
JW		 751static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
752{
308946b0 753 qeth_notify_cmd(iob, rc);
c3b2218d 754 qeth_put_cmd(iob);
4a71df50 755}
4a71df50 756
a59d121d
JW		 757struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
758 unsigned int length, unsigned int ccws,
759 long timeout)
40554895
JW		 760{
761 struct qeth_cmd_buffer *iob;
762
763 if (length > QETH_BUFSIZE)
764 return NULL;
765
766 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
767 if (!iob)
768 return NULL;
769
770 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
771 GFP_KERNEL | GFP_DMA);
772 if (!iob->data) {
773 kfree(iob);
774 return NULL;
775 }
776
308946b0
JW		 777 init_completion(&iob->done);
778 spin_lock_init(&iob->lock);
779 INIT_LIST_HEAD(&iob->list);
d9b9f40b 780 refcount_set(&iob->ref_count, 1);
40554895
JW		 781 iob->channel = channel;
782 iob->timeout = timeout;
783 iob->length = length;
784 return iob;
785}
a59d121d 786EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
40554895 787
988a747d 788static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 789 struct qeth_cmd_buffer *iob,
790 unsigned int data_length)
4a71df50 791{
308946b0 792 struct qeth_cmd_buffer *request = NULL;
d19b93f4 793 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba 794 struct qeth_reply *reply = NULL;
308946b0 795 struct qeth_cmd_buffer *tmp;
4a71df50 796 unsigned long flags;
5113fec0 797 int rc = 0;
4a71df50 798
847a50fd 799 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 800 rc = qeth_check_idx_response(card, iob->data);
801 switch (rc) {
802 case 0:
803 break;
804 case -EIO:
5113fec0 805 qeth_schedule_recovery(card);
01fc3e86 806 /* fall through */
5113fec0 807 default:
2e3d7fa5 808 qeth_clear_ipacmd_list(card);
3a5bad64 809 goto err_idx;
4a71df50
FB		 810 }
811
7f92316c
JW		 812 cmd = __ipa_reply(iob);
813 if (cmd) {
d19b93f4 814 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 815 if (!cmd)
816 goto out;
817 if (IS_OSN(card) && card->osn_info.assist_cb &&
818 cmd->hdr.command != IPA_CMD_STARTLAN) {
819 card->osn_info.assist_cb(card->dev, cmd);
820 goto out;
821 }
4a71df50
FB		 822 }
823
0951c6ba 824 /* match against pending cmd requests */
4a71df50 825 spin_lock_irqsave(&card->lock, flags);
308946b0 826 list_for_each_entry(tmp, &card->cmd_waiter_list, list) {
7f92316c 827 if (tmp->match && tmp->match(tmp, iob)) {
308946b0 828 request = tmp;
0951c6ba 829 /* take the object outside the lock */
308946b0 830 qeth_get_cmd(request);
0951c6ba 831 break;
4a71df50
FB		 832 }
833 }
834 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba 835
308946b0 836 if (!request)
0951c6ba
JW		 837 goto out;
838
308946b0 839 reply = &request->reply;
4b7ae122
JW		 840 if (!reply->callback) {
841 rc = 0;
072f7940
JW		 842 goto no_callback;
843 }
844
308946b0
JW		 845 spin_lock_irqsave(&request->lock, flags);
846 if (request->rc)
072f7940 847 /* Bail out when the requestor has already left: */
308946b0 848 rc = request->rc;
7c5f8ffb
JW		 849 else
850 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
851 (unsigned long)iob);
308946b0 852 spin_unlock_irqrestore(&request->lock, flags);
0951c6ba 853
072f7940 854no_callback:
61e04465 855 if (rc <= 0)
308946b0
JW		 856 qeth_notify_cmd(request, rc);
857 qeth_put_cmd(request);
4a71df50
FB		 858out:
859 memcpy(&card->seqno.pdu_hdr_ack,
860 QETH_PDU_HEADER_SEQ_NO(iob->data),
861 QETH_SEQ_NO_LENGTH);
7cbc9e8f 862 __qeth_issue_next_read(card);
3a5bad64
JW		 863err_idx:
864 qeth_put_cmd(iob);
4a71df50
FB		 865}
866
4a71df50
FB		 867static int qeth_set_thread_start_bit(struct qeth_card *card,
868 unsigned long thread)
869{
870 unsigned long flags;
871
872 spin_lock_irqsave(&card->thread_mask_lock, flags);
873 if (!(card->thread_allowed_mask & thread) ||
874 (card->thread_start_mask & thread)) {
875 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
876 return -EPERM;
877 }
878 card->thread_start_mask |= thread;
879 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
880 return 0;
881}
882
91003f35
JW		 883static void qeth_clear_thread_start_bit(struct qeth_card *card,
884 unsigned long thread)
4a71df50
FB		 885{
886 unsigned long flags;
887
888 spin_lock_irqsave(&card->thread_mask_lock, flags);
889 card->thread_start_mask &= ~thread;
890 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
891 wake_up(&card->wait_q);
892}
4a71df50 893
91003f35
JW		 894static void qeth_clear_thread_running_bit(struct qeth_card *card,
895 unsigned long thread)
4a71df50
FB		 896{
897 unsigned long flags;
898
899 spin_lock_irqsave(&card->thread_mask_lock, flags);
900 card->thread_running_mask &= ~thread;
901 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 902 wake_up_all(&card->wait_q);
4a71df50 903}
4a71df50
FB		 904
905static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
906{
907 unsigned long flags;
908 int rc = 0;
909
910 spin_lock_irqsave(&card->thread_mask_lock, flags);
911 if (card->thread_start_mask & thread) {
912 if ((card->thread_allowed_mask & thread) &&
913 !(card->thread_running_mask & thread)) {
914 rc = 1;
915 card->thread_start_mask &= ~thread;
916 card->thread_running_mask |= thread;
917 } else
918 rc = -EPERM;
919 }
920 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
921 return rc;
922}
923
91003f35 924static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
4a71df50
FB		 925{
926 int rc = 0;
927
928 wait_event(card->wait_q,
929 (rc = __qeth_do_run_thread(card, thread)) >= 0);
930 return rc;
931}
4a71df50
FB		 932
933void qeth_schedule_recovery(struct qeth_card *card)
934{
847a50fd 935 QETH_CARD_TEXT(card, 2, "startrec");
4a71df50
FB		 936 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
937 schedule_work(&card->kernel_thread_starter);
938}
4a71df50 939
8d908eb0
JW		 940static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
941 struct irb *irb)
4a71df50
FB		 942{
943 int dstat, cstat;
944 char *sense;
945
946 sense = (char *) irb->ecw;
23d805b6
PO		 947 cstat = irb->scsw.cmd.cstat;
948 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 949
950 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
951 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
952 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 953 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 954 dev_warn(&cdev->dev, "The qeth device driver "
955 "failed to recover an error on the device\n");
e19e5be8
JW		 956 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
957 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 958 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
959 16, 1, irb, 64, 1);
2f3c269d 960 return -EIO;
4a71df50
FB		 961 }
962
963 if (dstat & DEV_STAT_UNIT_CHECK) {
964 if (sense[SENSE_RESETTING_EVENT_BYTE] &
965 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 966 QETH_CARD_TEXT(card, 2, "REVIND");
2f3c269d 967 return -EIO;
4a71df50
FB		 968 }
969 if (sense[SENSE_COMMAND_REJECT_BYTE] &
970 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 971 QETH_CARD_TEXT(card, 2, "CMDREJi");
2f3c269d 972 return -EIO;
4a71df50
FB		 973 }
974 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 975 QETH_CARD_TEXT(card, 2, "AFFE");
2f3c269d 976 return -EIO;
4a71df50
FB		 977 }
978 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 979 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 980 return 0;
981 }
847a50fd 982 QETH_CARD_TEXT(card, 2, "DGENCHK");
2f3c269d 983 return -EIO;
4a71df50
FB		 984 }
985 return 0;
986}
987
54daaca7 988static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 989 struct irb *irb)
4a71df50 990{
8d908eb0 991 if (!IS_ERR(irb))
4a71df50
FB		 992 return 0;
993
994 switch (PTR_ERR(irb)) {
995 case -EIO:
e19e5be8
JW		 996 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
997 CCW_DEVID(cdev));
847a50fd
CO		 998 QETH_CARD_TEXT(card, 2, "ckirberr");
999 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 1000 return -EIO;
4a71df50 1001 case -ETIMEDOUT:
74eacdb9
FB		 1002 dev_warn(&cdev->dev, "A hardware operation timed out"
1003 " on the device\n");
847a50fd
CO		 1004 QETH_CARD_TEXT(card, 2, "ckirberr");
1005 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 1006 return -ETIMEDOUT;
4a71df50 1007 default:
e19e5be8
JW		 1008 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1009 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 1010 QETH_CARD_TEXT(card, 2, "ckirberr");
1011 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 1012 return PTR_ERR(irb);
4a71df50 1013 }
4a71df50
FB		 1014}
1015
1016static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1017 struct irb *irb)
1018{
1019 int rc;
1020 int cstat, dstat;
db71bbbd 1021 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1022 struct ccwgroup_device *gdev;
4a71df50
FB		 1023 struct qeth_channel *channel;
1024 struct qeth_card *card;
4a71df50 1025
8d908eb0
JW		 1026 /* while we hold the ccwdev lock, this stays valid: */
1027 gdev = dev_get_drvdata(&cdev->dev);
1028 card = dev_get_drvdata(&gdev->dev);
4a71df50 1029
847a50fd
CO		 1030 QETH_CARD_TEXT(card, 5, "irq");
1031
4a71df50
FB		 1032 if (card->read.ccwdev == cdev) {
1033 channel = &card->read;
847a50fd 1034 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1035 } else if (card->write.ccwdev == cdev) {
1036 channel = &card->write;
847a50fd 1037 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1038 } else {
1039 channel = &card->data;
847a50fd 1040 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1041 }
db71bbbd 1042
f9e50b02
JW		 1043 if (intparm == 0) {
1044 QETH_CARD_TEXT(card, 5, "irqunsol");
1045 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1046 QETH_CARD_TEXT(card, 5, "irqunexp");
1047
1048 dev_err(&cdev->dev,
1049 "Received IRQ with intparm %lx, expected %px\n",
1050 intparm, channel->active_cmd);
1051 if (channel->active_cmd)
1052 qeth_cancel_cmd(channel->active_cmd, -EIO);
1053 } else {
1054 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1055 }
1056
1057 channel->active_cmd = NULL;
7359393f 1058 qeth_unlock_channel(card, channel);
db71bbbd 1059
2066e1db 1060 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1061 if (rc) {
db71bbbd
JW		 1062 /* IO was terminated, free its resources. */
1063 if (iob)
54daaca7 1064 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1065 return;
1066 }
1067
7359393f 1068 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
4a71df50 1069 channel->state = CH_STATE_STOPPED;
7359393f
JW		 1070 wake_up(&card->wait_q);
1071 }
4a71df50 1072
7359393f 1073 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
4a71df50 1074 channel->state = CH_STATE_HALTED;
7359393f
JW		 1075 wake_up(&card->wait_q);
1076 }
4a71df50 1077
f9e50b02
JW		 1078 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1079 SCSW_FCTL_HALT_FUNC))) {
1080 qeth_cancel_cmd(iob, -ECANCELED);
1081 iob = NULL;
4a71df50 1082 }
db71bbbd
JW		 1083
1084 cstat = irb->scsw.cmd.cstat;
1085 dstat = irb->scsw.cmd.dstat;
1086
4a71df50
FB		 1087 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1088 (dstat & DEV_STAT_UNIT_CHECK) ||
1089 (cstat)) {
1090 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1091 dev_warn(&channel->ccwdev->dev,
1092 "The qeth device driver failed to recover "
1093 "an error on the device\n");
e19e5be8
JW		 1094 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1095 CCW_DEVID(channel->ccwdev), cstat,
1096 dstat);
4a71df50
FB		 1097 print_hex_dump(KERN_WARNING, "qeth: irb ",
1098 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1099 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1100 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1101 }
2066e1db 1102
8d908eb0 1103 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1104 if (rc) {
a6c3d939 1105 card->read_or_write_problem = 1;
5065b2dd 1106 if (iob)
54daaca7 1107 qeth_cancel_cmd(iob, rc);
28a7e4c9 1108 qeth_clear_ipacmd_list(card);
4a71df50 1109 qeth_schedule_recovery(card);
7359393f 1110 return;
4a71df50
FB		 1111 }
1112 }
1113
12fc286f
JW		 1114 if (iob) {
1115 /* sanity check: */
1116 if (irb->scsw.cmd.count > iob->length) {
1117 qeth_cancel_cmd(iob, -EIO);
7359393f 1118 return;
12fc286f
JW		 1119 }
1120 if (iob->callback)
1121 iob->callback(card, iob,
1122 iob->length - irb->scsw.cmd.count);
1123 }
4a71df50
FB		 1124}
1125
b3332930 1126static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1127 struct qeth_qdio_out_buffer *buf,
b3332930 1128 enum iucv_tx_notify notification)
4a71df50 1129{
4a71df50
FB		 1130 struct sk_buff *skb;
1131
dc149e37 1132 skb_queue_walk(&buf->skb_list, skb) {
b3332930
FB		 1133 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1134 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
6a3123d0
JW		 1135 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1136 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
b3332930 1137 }
b3332930
FB		 1138}
1139
85e537d8
JW		 1140static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1141 int budget)
b3332930 1142{
eeac0e20 1143 struct qeth_qdio_out_q *queue = buf->q;
104b4859
JW		 1144 struct sk_buff *skb;
1145
72861ae7 1146 /* release may never happen from within CQ tasklet scope */
18af5c17 1147 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
4a71df50 1148
6a3123d0 1149 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
eeac0e20
JW		 1150 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR);
1151
1152 /* Empty buffer? */
1153 if (buf->next_element_to_fill == 0)
1154 return;
1155
1156 QETH_TXQ_STAT_INC(queue, bufs);
1157 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1ab2f8c6
JW		 1158 if (error) {
1159 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1160 } else {
1161 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1162 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1163 }
1164
eeac0e20
JW		 1165 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1166 unsigned int bytes = qdisc_pkt_len(skb);
1167 bool is_tso = skb_is_gso(skb);
1168 unsigned int packets;
1169
1170 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1ab2f8c6 1171 if (!error) {
eeac0e20
JW		 1172 if (skb->ip_summed == CHECKSUM_PARTIAL)
1173 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1174 if (skb_is_nonlinear(skb))
1175 QETH_TXQ_STAT_INC(queue, skbs_sg);
1176 if (is_tso) {
1177 QETH_TXQ_STAT_INC(queue, skbs_tso);
1178 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1179 }
1180 }
6a3123d0 1181
85e537d8 1182 napi_consume_skb(skb, budget);
eeac0e20 1183 }
b3332930
FB		 1184}
1185
1186static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1187 struct qeth_qdio_out_buffer *buf,
85e537d8 1188 bool error, int budget)
b3332930
FB		 1189{
1190 int i;
1191
1192 /* is PCI flag set on buffer? */
1193 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1194 atomic_dec(&queue->set_pci_flags_count);
1195
85e537d8 1196 qeth_tx_complete_buf(buf, error, budget);
3b346c18 1197
4e26c5fe 1198 for (i = 0; i < queue->max_elements; ++i) {
2db01da8
JW		 1199 void *data = phys_to_virt(buf->buffer->element[i].addr);
1200
1201 if (data && buf->is_header[i])
1202 kmem_cache_free(qeth_core_header_cache, data);
683d718a 1203 buf->is_header[i] = 0;
4a71df50 1204 }
3b346c18 1205
4e26c5fe 1206 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1207 buf->next_element_to_fill = 0;
1ab2f8c6 1208 buf->frames = 0;
96bd6c94 1209 buf->bytes = 0;
3b346c18 1210 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1211}
1212
41c47da3 1213static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1214{
1215 int j;
1216
1217 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1218 if (!q->bufs[j])
1219 continue;
72861ae7 1220 qeth_cleanup_handled_pending(q, j, 1);
85e537d8 1221 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d
EL		 1222 if (free) {
1223 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1224 q->bufs[j] = NULL;
1225 }
1226 }
4a71df50
FB		 1227}
1228
41c47da3 1229void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1230{
0da9581d 1231 int i;
4a71df50 1232
847a50fd 1233 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1234 /* clear outbound buffers to free skbs */
0da9581d 1235 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1236 if (card->qdio.out_qs[i])
1237 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1238 }
4a71df50 1239}
41c47da3 1240EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
4a71df50 1241
bd966839 1242static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1243{
1c103cf8
JW		 1244 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1245 unsigned int count;
bd966839 1246 int rc;
725b9c04 1247
1c103cf8
JW		 1248 count = IS_VM_NIC(card) ? min(max, card->dev->real_num_tx_queues) : max;
1249
73dc2daf 1250 rtnl_lock();
bd966839 1251 rc = netif_set_real_num_tx_queues(card->dev, count);
73dc2daf 1252 rtnl_unlock();
725b9c04 1253
bd966839
JW		 1254 if (rc)
1255 return rc;
1256
1c103cf8 1257 if (card->qdio.no_out_queues == max)
bd966839 1258 return 0;
725b9c04 1259
73dc2daf 1260 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1261 qeth_free_qdio_queues(card);
73dc2daf 1262
1c103cf8 1263 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
73dc2daf
JW		 1264 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1265
1c103cf8 1266 card->qdio.no_out_queues = max;
bd966839 1267 return 0;
725b9c04
SO		 1268}
1269
a4cdc9ba 1270static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1271{
4a71df50 1272 struct ccw_device *ccwdev;
ded27d8d 1273 struct channel_path_desc_fmt0 *chp_dsc;
bd966839 1274 int rc = 0;
4a71df50 1275
57a688aa 1276 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1277
1278 ccwdev = card->data.ccwdev;
725b9c04
SO		 1279 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1280 if (!chp_dsc)
a4cdc9ba 1281 return -ENOMEM;
725b9c04
SO		 1282
1283 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1284
73dc2daf
JW		 1285 if (IS_OSD(card) || IS_OSX(card))
1286 /* CHPP field bit 6 == 1 -> single queue */
bd966839 1287 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1288
725b9c04 1289 kfree(chp_dsc);
57a688aa
JW		 1290 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1291 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bd966839 1292 return rc;
4a71df50
FB		 1293}
1294
1295static void qeth_init_qdio_info(struct qeth_card *card)
1296{
57a688aa 1297 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1298 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1299 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1300 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1301
4a71df50 1302 /* inbound */
ed2e93ef 1303 card->qdio.no_in_queues = 1;
4a71df50 1304 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1305 if (IS_IQD(card))
dcf4ae2d
FB		 1306 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1307 else
1308 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1309 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1310 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1311 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1312}
1313
95f4d8b7 1314static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1315{
1316 card->options.route4.type = NO_ROUTER;
1317 card->options.route6.type = NO_ROUTER;
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
7f23d55f 1685static void qeth_idx_init(struct qeth_card *card)
4a71df50 1686{
7f23d55f
JW		 1687 memset(&card->seqno, 0, sizeof(card->seqno));
1688
4a71df50
FB		 1689 card->token.issuer_rm_w = 0x00010103UL;
1690 card->token.cm_filter_w = 0x00010108UL;
1691 card->token.cm_connection_w = 0x0001010aUL;
1692 card->token.ulp_filter_w = 0x0001010bUL;
1693 card->token.ulp_connection_w = 0x0001010dUL;
4a71df50 1694
5113fec0
UB		 1695 switch (card->info.type) {
1696 case QETH_CARD_TYPE_IQD:
6298263a 1697 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1698 break;
1699 case QETH_CARD_TYPE_OSD:
0132951e 1700 case QETH_CARD_TYPE_OSN:
5113fec0
UB		 1701 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1702 break;
1703 default:
1704 break;
4a71df50
FB		 1705 }
1706}
1707
48ce6f89 1708static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1709 struct qeth_cmd_buffer *iob)
48ce6f89 1710{
48ce6f89
JW		 1711 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1712 QETH_SEQ_NO_LENGTH);
1713 if (iob->channel == &card->write)
1714 card->seqno.trans_hdr++;
1715}
1716
4a71df50
FB		 1717static int qeth_peer_func_level(int level)
1718{
1719 if ((level & 0xff) == 8)
1720 return (level & 0xff) + 0x400;
1721 if (((level >> 8) & 3) == 1)
1722 return (level & 0xff) + 0x200;
1723 return level;
1724}
1725
48ce6f89 1726static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1727 struct qeth_cmd_buffer *iob)
4a71df50 1728{
c3b2218d 1729 qeth_idx_finalize_cmd(card, iob);
4a71df50 1730
4a71df50
FB		 1731 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1732 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1733 card->seqno.pdu_hdr++;
1734 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1735 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1736
48ce6f89 1737 iob->callback = qeth_release_buffer_cb;
4a71df50 1738}
4a71df50 1739
7f92316c
JW		 1740static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1741 struct qeth_cmd_buffer *reply)
1742{
1743 /* MPC cmds are issued strictly in sequence. */
1744 return !IS_IPA(reply->data);
1745}
1746
f19f8fd2
JW		 1747static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1748 void *data,
1749 unsigned int data_length)
1273a800
JW		 1750{
1751 struct qeth_cmd_buffer *iob;
1752
f19f8fd2
JW		 1753 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1754 if (!iob)
1755 return NULL;
1756
1757 memcpy(iob->data, data, data_length);
1758 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1759 iob->data);
1760 iob->finalize = qeth_mpc_finalize_cmd;
7f92316c 1761 iob->match = qeth_mpc_match_reply;
1273a800
JW		 1762 return iob;
1763}
1764
efbbc1d5
EC		 1765/**
1766 * qeth_send_control_data() - send control command to the card
1767 * @card: qeth_card structure pointer
efbbc1d5
EC		 1768 * @iob: qeth_cmd_buffer pointer
1769 * @reply_cb: callback function pointer
1770 * @cb_card: pointer to the qeth_card structure
1771 * @cb_reply: pointer to the qeth_reply structure
1772 * @cb_cmd: pointer to the original iob for non-IPA
1773 * commands, or to the qeth_ipa_cmd structure
1774 * for the IPA commands.
1775 * @reply_param: private pointer passed to the callback
1776 *
efbbc1d5
EC		 1777 * Callback function gets called one or more times, with cb_cmd
1778 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 1779 * function must return
1780 * > 0 if more reply blocks are expected,
1781 * 0 if the last or only reply block is received, and
1782 * < 0 on error.
1783 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 1784 * field 'param' of the structure qeth_reply.
1785 */
1786
c3b2218d 1787static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 1788 struct qeth_cmd_buffer *iob,
1789 int (*reply_cb)(struct qeth_card *cb_card,
1790 struct qeth_reply *cb_reply,
1791 unsigned long cb_cmd),
1792 void *reply_param)
4a71df50 1793{
750b1625 1794 struct qeth_channel *channel = iob->channel;
308946b0 1795 struct qeth_reply *reply = &iob->reply;
782e4a79 1796 long timeout = iob->timeout;
4a71df50 1797 int rc;
4a71df50 1798
847a50fd 1799 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 1800
4a71df50
FB		 1801 reply->callback = reply_cb;
1802 reply->param = reply_param;
d22ffb5a 1803
782e4a79
JW		 1804 timeout = wait_event_interruptible_timeout(card->wait_q,
1805 qeth_trylock_channel(channel),
1806 timeout);
1807 if (timeout <= 0) {
c3b2218d 1808 qeth_put_cmd(iob);
782e4a79
JW		 1809 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1810 }
4a71df50 1811
2066e1db 1812 if (iob->finalize)
c3b2218d
JW		 1813 iob->finalize(card, iob);
1814 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 1815
308946b0 1816 qeth_enqueue_cmd(card, iob);
1c5b2216 1817
32e85a0d
JW		 1818 /* This pairs with iob->callback, and keeps the iob alive after IO: */
1819 qeth_get_cmd(iob);
1820
847a50fd 1821 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 1822 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 1823 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 1824 (addr_t) iob, 0, 0, timeout);
f9e50b02
JW		 1825 if (!rc)
1826 channel->active_cmd = iob;
ed47155b 1827 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1828 if (rc) {
e19e5be8
JW		 1829 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1830 CARD_DEVID(card), rc);
847a50fd 1831 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 1832 qeth_dequeue_cmd(card, iob);
c3b2218d 1833 qeth_put_cmd(iob);
7359393f 1834 qeth_unlock_channel(card, channel);
32e85a0d 1835 goto out;
4a71df50 1836 }
5b54e16f 1837
308946b0 1838 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 1839 timeout);
1840 if (timeout <= 0)
1841 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 1842
308946b0 1843 qeth_dequeue_cmd(card, iob);
072f7940
JW		 1844
1845 if (reply_cb) {
1846 /* Wait until the callback for a late reply has completed: */
308946b0 1847 spin_lock_irq(&iob->lock);
072f7940
JW		 1848 if (rc)
1849 /* Zap any callback that's still pending: */
308946b0
JW		 1850 iob->rc = rc;
1851 spin_unlock_irq(&iob->lock);
072f7940
JW		 1852 }
1853
782e4a79 1854 if (!rc)
308946b0 1855 rc = iob->rc;
32e85a0d
JW		 1856
1857out:
32e85a0d 1858 qeth_put_cmd(iob);
5b54e16f 1859 return rc;
4a71df50 1860}
4a71df50 1861
afc1f67b
JW		 1862struct qeth_node_desc {
1863 struct node_descriptor nd1;
1864 struct node_descriptor nd2;
1865 struct node_descriptor nd3;
1866};
1867
2066e1db 1868static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 1869 struct qeth_cmd_buffer *iob,
1870 unsigned int data_length)
2066e1db 1871{
afc1f67b 1872 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 1873 int rc = 0;
afc1f67b 1874 u8 *tag;
2066e1db
JW		 1875
1876 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 1877
1878 if (data_length < sizeof(*nd)) {
1879 rc = -EINVAL;
1880 goto out;
1881 }
1882
afc1f67b
JW		 1883 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
1884 nd->nd1.plant[1] == _ascebc['M'];
1885 tag = (u8 *)&nd->nd1.tag;
1886 card->info.chpid = tag[0];
1887 card->info.unit_addr2 = tag[1];
1888
1889 tag = (u8 *)&nd->nd2.tag;
1890 card->info.cula = tag[1];
1891
1892 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
1893 nd->nd3.model[1] == 0xF0 &&
1894 nd->nd3.model[2] >= 0xF1 &&
1895 nd->nd3.model[2] <= 0xF4;
2066e1db 1896
12fc286f 1897out:
308946b0 1898 qeth_notify_cmd(iob, rc);
c3b2218d 1899 qeth_put_cmd(iob);
2066e1db
JW		 1900}
1901
1902static int qeth_read_conf_data(struct qeth_card *card)
1903{
1904 struct qeth_channel *channel = &card->data;
1905 struct qeth_cmd_buffer *iob;
1906 struct ciw *ciw;
1907
1908 /* scan for RCD command in extended SenseID data */
1909 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1910 if (!ciw || ciw->cmd == 0)
1911 return -EOPNOTSUPP;
afc1f67b
JW		 1912 if (ciw->count < sizeof(struct qeth_node_desc))
1913 return -EINVAL;
2066e1db
JW		 1914
1915 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1916 if (!iob)
1917 return -ENOMEM;
1918
1919 iob->callback = qeth_read_conf_data_cb;
1920 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1921 iob->data);
1922
c3b2218d 1923 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 1924}
1925
2e873d10
JW		 1926static int qeth_idx_check_activate_response(struct qeth_card *card,
1927 struct qeth_channel *channel,
1928 struct qeth_cmd_buffer *iob)
1929{
1930 int rc;
1931
1932 rc = qeth_check_idx_response(card, iob->data);
1933 if (rc)
1934 return rc;
1935
1936 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1937 return 0;
1938
1939 /* negative reply: */
57a688aa
JW		 1940 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1941 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 1942
1943 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1944 case QETH_IDX_ACT_ERR_EXCL:
1945 dev_err(&channel->ccwdev->dev,
1946 "The adapter is used exclusively by another host\n");
1947 return -EBUSY;
1948 case QETH_IDX_ACT_ERR_AUTH:
1949 case QETH_IDX_ACT_ERR_AUTH_USER:
1950 dev_err(&channel->ccwdev->dev,
1951 "Setting the device online failed because of insufficient authorization\n");
1952 return -EPERM;
1953 default:
1954 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1955 CCW_DEVID(channel->ccwdev));
1956 return -EIO;
1957 }
1958}
1959
f3b783b1 1960static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
12fc286f
JW		 1961 struct qeth_cmd_buffer *iob,
1962 unsigned int data_length)
2e873d10 1963{
fcda7f73 1964 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1965 u16 peer_level;
1966 int rc;
1967
57a688aa 1968 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 1969
1970 rc = qeth_idx_check_activate_response(card, channel, iob);
1971 if (rc)
1972 goto out;
1973
1974 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1975 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1976 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1977 CCW_DEVID(channel->ccwdev),
1978 card->info.func_level, peer_level);
1979 rc = -EINVAL;
1980 goto out;
1981 }
1982
1983 memcpy(&card->token.issuer_rm_r,
1984 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1985 QETH_MPC_TOKEN_LENGTH);
1986 memcpy(&card->info.mcl_level[0],
1987 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1988
1989out:
308946b0 1990 qeth_notify_cmd(iob, rc);
c3b2218d 1991 qeth_put_cmd(iob);
2e873d10
JW		 1992}
1993
f3b783b1 1994static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 1995 struct qeth_cmd_buffer *iob,
1996 unsigned int data_length)
2e873d10 1997{
fcda7f73 1998 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 1999 u16 peer_level;
2000 int rc;
2001
57a688aa 2002 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 2003
2004 rc = qeth_idx_check_activate_response(card, channel, iob);
2005 if (rc)
2006 goto out;
2007
2008 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2009 if ((peer_level & ~0x0100) !=
2010 qeth_peer_func_level(card->info.func_level)) {
2011 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2012 CCW_DEVID(channel->ccwdev),
2013 card->info.func_level, peer_level);
2014 rc = -EINVAL;
2015 }
2016
2017out:
308946b0 2018 qeth_notify_cmd(iob, rc);
c3b2218d 2019 qeth_put_cmd(iob);
2e873d10
JW		 2020}
2021
2e873d10
JW		 2022static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2023 struct qeth_cmd_buffer *iob)
2024{
2025 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2026 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 2027 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10
JW		 2028 struct ccw_dev_id dev_id;
2029
f3b783b1
JW		 2030 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2031 iob->data);
2032 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10
JW		 2033 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2034 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 2035
5fd3fcbb 2036 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 2037 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2038 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2039 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2040 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2041 &card->info.func_level, 2);
2042 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
2043 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2044}
2045
2046static int qeth_idx_activate_read_channel(struct qeth_card *card)
2047{
2048 struct qeth_channel *channel = &card->read;
2049 struct qeth_cmd_buffer *iob;
2050 int rc;
2051
57a688aa 2052 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2053
f3b783b1 2054 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2055 if (!iob)
2056 return -ENOMEM;
2057
2058 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2059 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2060 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 2061
c3b2218d 2062 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2063 if (rc)
2064 return rc;
2065
2e873d10
JW		 2066 channel->state = CH_STATE_UP;
2067 return 0;
2068}
2069
2070static int qeth_idx_activate_write_channel(struct qeth_card *card)
2071{
2072 struct qeth_channel *channel = &card->write;
2073 struct qeth_cmd_buffer *iob;
2074 int rc;
2075
57a688aa 2076 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2077
f3b783b1 2078 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2079 if (!iob)
2080 return -ENOMEM;
2081
2082 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2083 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2084 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2085
c3b2218d 2086 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2087 if (rc)
2088 return rc;
2089
2e873d10
JW		 2090 channel->state = CH_STATE_UP;
2091 return 0;
2092}
2093
4a71df50
FB		 2094static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2095 unsigned long data)
2096{
2097 struct qeth_cmd_buffer *iob;
2098
57a688aa 2099 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2100
2101 iob = (struct qeth_cmd_buffer *) data;
2102 memcpy(&card->token.cm_filter_r,
2103 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2104 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2105 return 0;
2106}
2107
2108static int qeth_cm_enable(struct qeth_card *card)
2109{
4a71df50
FB		 2110 struct qeth_cmd_buffer *iob;
2111
57a688aa 2112 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2113
f19f8fd2 2114 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2115 if (!iob)
2116 return -ENOMEM;
48ce6f89 2117
4a71df50
FB		 2118 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2119 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2120 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2121 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2122
c3b2218d 2123 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2124}
2125
2126static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2127 unsigned long data)
2128{
4a71df50
FB		 2129 struct qeth_cmd_buffer *iob;
2130
57a688aa 2131 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2132
2133 iob = (struct qeth_cmd_buffer *) data;
2134 memcpy(&card->token.cm_connection_r,
2135 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2136 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2137 return 0;
2138}
2139
2140static int qeth_cm_setup(struct qeth_card *card)
2141{
4a71df50
FB		 2142 struct qeth_cmd_buffer *iob;
2143
57a688aa 2144 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2145
f19f8fd2 2146 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2147 if (!iob)
2148 return -ENOMEM;
48ce6f89 2149
4a71df50
FB		 2150 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2151 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2152 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2153 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2154 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2155 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2156 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2157}
2158
8ce7a9e0 2159static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2160{
8ce7a9e0
JW		 2161 struct net_device *dev = card->dev;
2162 unsigned int new_mtu;
2163
2164 if (!max_mtu) {
2165 /* IQD needs accurate max MTU to set up its RX buffers: */
2166 if (IS_IQD(card))
2167 return -EINVAL;
2168 /* tolerate quirky HW: */
2169 max_mtu = ETH_MAX_MTU;
2170 }
2171
2172 rtnl_lock();
2173 if (IS_IQD(card)) {
2174 /* move any device with default MTU to new max MTU: */
2175 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2176
2177 /* adjust RX buffer size to new max MTU: */
2178 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2179 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2180 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2181 } else {
2182 if (dev->mtu)
2183 new_mtu = dev->mtu;
2184 /* default MTUs for first setup: */
4fda3354 2185 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2186 new_mtu = ETH_DATA_LEN;
2187 else
2188 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2189 }
8ce7a9e0
JW		 2190
2191 dev->max_mtu = max_mtu;
2192 dev->mtu = min(new_mtu, max_mtu);
2193 rtnl_unlock();
2194 return 0;
4a71df50
FB		 2195}
2196
cef6ff22 2197static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2198{
2199 switch (framesize) {
2200 case 0x4000:
2201 return 8192;
2202 case 0x6000:
2203 return 16384;
2204 case 0xa000:
2205 return 32768;
2206 case 0xffff:
2207 return 57344;
2208 default:
2209 return 0;
2210 }
2211}
2212
4a71df50
FB		 2213static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2214 unsigned long data)
2215{
4a71df50
FB		 2216 __u16 mtu, framesize;
2217 __u16 len;
2218 __u8 link_type;
2219 struct qeth_cmd_buffer *iob;
2220
57a688aa 2221 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2222
2223 iob = (struct qeth_cmd_buffer *) data;
2224 memcpy(&card->token.ulp_filter_r,
2225 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2226 QETH_MPC_TOKEN_LENGTH);
379ac99e 2227 if (IS_IQD(card)) {
4a71df50
FB		 2228 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2229 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2230 } else {
8ce7a9e0 2231 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2232 }
8ce7a9e0 2233 *(u16 *)reply->param = mtu;
4a71df50
FB		 2234
2235 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2236 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2237 memcpy(&link_type,
2238 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2239 card->info.link_type = link_type;
2240 } else
2241 card->info.link_type = 0;
57a688aa 2242 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2243 return 0;
2244}
2245
73657a3e
JW		 2246static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2247{
2248 if (IS_OSN(card))
2249 return QETH_PROT_OSN2;
4fda3354 2250 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
73657a3e
JW		 2251}
2252
4a71df50
FB		 2253static int qeth_ulp_enable(struct qeth_card *card)
2254{
73657a3e 2255 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2256 struct qeth_cmd_buffer *iob;
8ce7a9e0 2257 u16 max_mtu;
73657a3e 2258 int rc;
4a71df50 2259
57a688aa 2260 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2261
f19f8fd2 2262 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2263 if (!iob)
2264 return -ENOMEM;
4a71df50 2265
92d27209 2266 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2267 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2268 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2269 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2270 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2271 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2272 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2273 if (rc)
2274 return rc;
2275 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2276}
2277
2278static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2279 unsigned long data)
2280{
2281 struct qeth_cmd_buffer *iob;
2282
57a688aa 2283 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2284
2285 iob = (struct qeth_cmd_buffer *) data;
2286 memcpy(&card->token.ulp_connection_r,
2287 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2288 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2289 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2290 3)) {
57a688aa 2291 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2292 dev_err(&card->gdev->dev, "A connection could not be "
2293 "established because of an OLM limit\n");
4b7ae122 2294 return -EMLINK;
65a1f898 2295 }
7bf9bcff 2296 return 0;
4a71df50
FB		 2297}
2298
2299static int qeth_ulp_setup(struct qeth_card *card)
2300{
4a71df50
FB		 2301 __u16 temp;
2302 struct qeth_cmd_buffer *iob;
2303 struct ccw_dev_id dev_id;
2304
57a688aa 2305 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2306
f19f8fd2 2307 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2308 if (!iob)
2309 return -ENOMEM;
4a71df50
FB		 2310
2311 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2312 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2313 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2314 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2315 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2316 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2317
2318 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2319 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2320 temp = (card->info.cula << 8) + card->info.unit_addr2;
2321 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2322 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2323}
2324
0da9581d
EL		 2325static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2326{
0da9581d
EL		 2327 struct qeth_qdio_out_buffer *newbuf;
2328
0da9581d 2329 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
3b346c18
JW		 2330 if (!newbuf)
2331 return -ENOMEM;
2332
d445a4e2 2333 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2334 skb_queue_head_init(&newbuf->skb_list);
2335 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2336 newbuf->q = q;
0da9581d
EL		 2337 newbuf->next_pending = q->bufs[bidx];
2338 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2339 q->bufs[bidx] = newbuf;
3b346c18 2340 return 0;
0da9581d
EL		 2341}
2342
afa0c590 2343static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2344{
2345 if (!q)
2346 return;
2347
41c47da3 2348 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2349 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2350 kfree(q);
2351}
2352
41c47da3 2353static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2354{
2355 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2356
2357 if (!q)
2358 return NULL;
2359
2360 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2361 kfree(q);
2362 return NULL;
2363 }
2364 return q;
2365}
0da9581d 2366
e53edf74
JW		 2367static void qeth_tx_completion_timer(struct timer_list *timer)
2368{
2369 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2370
2371 napi_schedule(&queue->napi);
2372 QETH_TXQ_STAT_INC(queue, completion_timer);
2373}
2374
41c47da3 2375static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50
FB		 2376{
2377 int i, j;
2378
57a688aa 2379 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2380
2381 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2382 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2383 return 0;
2384
57a688aa 2385 QETH_CARD_TEXT(card, 2, "inq");
4601ba6c 2386 card->qdio.in_q = qeth_alloc_qdio_queue();
4a71df50
FB		 2387 if (!card->qdio.in_q)
2388 goto out_nomem;
4601ba6c 2389
4a71df50
FB		 2390 /* inbound buffer pool */
2391 if (qeth_alloc_buffer_pool(card))
2392 goto out_freeinq;
0da9581d 2393
4a71df50 2394 /* outbound */
4a71df50 2395 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2396 struct qeth_qdio_out_q *queue;
2397
2398 queue = qeth_alloc_output_queue();
2399 if (!queue)
4a71df50 2400 goto out_freeoutq;
57a688aa 2401 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2402 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2403 card->qdio.out_qs[i] = queue;
2404 queue->card = card;
2405 queue->queue_no = i;
2406 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
ee1e52d1
JW		 2407 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2408 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
e53edf74 2409
4a71df50
FB		 2410 /* give outbound qeth_qdio_buffers their qdio_buffers */
2411 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
e53edf74
JW		 2412 WARN_ON(queue->bufs[j]);
2413 if (qeth_init_qdio_out_buf(queue, j))
0da9581d 2414 goto out_freeoutqbufs;
4a71df50
FB		 2415 }
2416 }
0da9581d
EL		 2417
2418 /* completion */
2419 if (qeth_alloc_cq(card))
2420 goto out_freeoutq;
2421
4a71df50
FB		 2422 return 0;
2423
0da9581d
EL		 2424out_freeoutqbufs:
2425 while (j > 0) {
2426 --j;
2427 kmem_cache_free(qeth_qdio_outbuf_cache,
2428 card->qdio.out_qs[i]->bufs[j]);
2429 card->qdio.out_qs[i]->bufs[j] = NULL;
2430 }
4a71df50 2431out_freeoutq:
bb92d3f8 2432 while (i > 0) {
afa0c590 2433 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2434 card->qdio.out_qs[i] = NULL;
2435 }
4a71df50
FB		 2436 qeth_free_buffer_pool(card);
2437out_freeinq:
4601ba6c 2438 qeth_free_qdio_queue(card->qdio.in_q);
4a71df50
FB		 2439 card->qdio.in_q = NULL;
2440out_nomem:
2441 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2442 return -ENOMEM;
2443}
2444
41c47da3 2445static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2446{
2447 int i, j;
2448
2449 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2450 QETH_QDIO_UNINITIALIZED)
2451 return;
2452
2453 qeth_free_cq(card);
d445a4e2
SO		 2454 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2455 if (card->qdio.in_q->bufs[j].rx_skb)
2456 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2457 }
2458 qeth_free_qdio_queue(card->qdio.in_q);
2459 card->qdio.in_q = NULL;
2460 /* inbound buffer pool */
2461 qeth_free_buffer_pool(card);
2462 /* free outbound qdio_qs */
bb92d3f8
JW		 2463 for (i = 0; i < card->qdio.no_out_queues; i++) {
2464 qeth_free_output_queue(card->qdio.out_qs[i]);
2465 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2466 }
2467}
2468
4a71df50
FB		 2469static void qeth_create_qib_param_field(struct qeth_card *card,
2470 char *param_field)
2471{
2472
2473 param_field[0] = _ascebc['P'];
2474 param_field[1] = _ascebc['C'];
2475 param_field[2] = _ascebc['I'];
2476 param_field[3] = _ascebc['T'];
2477 *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2478 *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2479 *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2480}
2481
2482static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2483 char *param_field)
2484{
2485 param_field[16] = _ascebc['B'];
2486 param_field[17] = _ascebc['L'];
2487 param_field[18] = _ascebc['K'];
2488 param_field[19] = _ascebc['T'];
2489 *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2490 *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2491 *((unsigned int *) (&param_field[28])) =
2492 card->info.blkt.inter_packet_jumbo;
2493}
2494
2495static int qeth_qdio_activate(struct qeth_card *card)
2496{
57a688aa 2497 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2498 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2499}
2500
2501static int qeth_dm_act(struct qeth_card *card)
2502{
4a71df50
FB		 2503 struct qeth_cmd_buffer *iob;
2504
57a688aa 2505 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2506
f19f8fd2 2507 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2508 if (!iob)
2509 return -ENOMEM;
4a71df50
FB		 2510
2511 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2512 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2513 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2514 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2515 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2516}
2517
2518static int qeth_mpc_initialize(struct qeth_card *card)
2519{
2520 int rc;
2521
57a688aa 2522 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2523
2524 rc = qeth_issue_next_read(card);
2525 if (rc) {
57a688aa 2526 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2527 return rc;
2528 }
2529 rc = qeth_cm_enable(card);
2530 if (rc) {
57a688aa 2531 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
8b5026bc 2532 return rc;
4a71df50
FB		 2533 }
2534 rc = qeth_cm_setup(card);
2535 if (rc) {
57a688aa 2536 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
8b5026bc 2537 return rc;
4a71df50
FB		 2538 }
2539 rc = qeth_ulp_enable(card);
2540 if (rc) {
57a688aa 2541 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
8b5026bc 2542 return rc;
4a71df50
FB		 2543 }
2544 rc = qeth_ulp_setup(card);
2545 if (rc) {
57a688aa 2546 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2547 return rc;
4a71df50 2548 }
41c47da3 2549 rc = qeth_alloc_qdio_queues(card);
4a71df50 2550 if (rc) {
57a688aa 2551 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2552 return rc;
4a71df50
FB		 2553 }
2554 rc = qeth_qdio_establish(card);
2555 if (rc) {
57a688aa 2556 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2557 qeth_free_qdio_queues(card);
8b5026bc 2558 return rc;
4a71df50
FB		 2559 }
2560 rc = qeth_qdio_activate(card);
2561 if (rc) {
57a688aa 2562 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
8b5026bc 2563 return rc;
4a71df50
FB		 2564 }
2565 rc = qeth_dm_act(card);
2566 if (rc) {
57a688aa 2567 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
8b5026bc 2568 return rc;
4a71df50
FB		 2569 }
2570
2571 return 0;
4a71df50
FB		 2572}
2573
4a71df50
FB		 2574void qeth_print_status_message(struct qeth_card *card)
2575{
2576 switch (card->info.type) {
5113fec0
UB		 2577 case QETH_CARD_TYPE_OSD:
2578 case QETH_CARD_TYPE_OSM:
2579 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2580 /* VM will use a non-zero first character
2581 * to indicate a HiperSockets like reporting
2582 * of the level OSA sets the first character to zero
2583 * */
2584 if (!card->info.mcl_level[0]) {
2585 sprintf(card->info.mcl_level, "%02x%02x",
2586 card->info.mcl_level[2],
2587 card->info.mcl_level[3]);
4a71df50
FB		 2588 break;
2589 }
2590 /* fallthrough */
2591 case QETH_CARD_TYPE_IQD:
379ac99e 2592 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2593 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2594 card->info.mcl_level[0]];
2595 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2596 card->info.mcl_level[1]];
2597 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2598 card->info.mcl_level[2]];
2599 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2600 card->info.mcl_level[3]];
2601 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2602 }
2603 break;
2604 default:
2605 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2606 }
239ff408
UB		 2607 dev_info(&card->gdev->dev,
2608 "Device is a%s card%s%s%s\nwith link type %s.\n",
2609 qeth_get_cardname(card),
2610 (card->info.mcl_level[0]) ? " (level: " : "",
2611 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2612 (card->info.mcl_level[0]) ? ")" : "",
2613 qeth_get_cardname_short(card));
4a71df50
FB		 2614}
2615EXPORT_SYMBOL_GPL(qeth_print_status_message);
2616
4a71df50
FB		 2617static void qeth_initialize_working_pool_list(struct qeth_card *card)
2618{
2619 struct qeth_buffer_pool_entry *entry;
2620
847a50fd 2621 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2622
2623 list_for_each_entry(entry,
2624 &card->qdio.init_pool.entry_list, init_list) {
2625 qeth_put_buffer_pool_entry(card, entry);
2626 }
2627}
2628
cef6ff22
JW		 2629static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2630 struct qeth_card *card)
4a71df50 2631{
4a71df50
FB		 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
bb59c8a8 2638 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
4a71df50
FB		 2639 free = 1;
2640 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2641 if (page_count(entry->elements[i]) > 1) {
4a71df50
FB		 2642 free = 0;
2643 break;
2644 }
2645 }
2646 if (free) {
2647 list_del_init(&entry->list);
2648 return entry;
2649 }
2650 }
2651
2652 /* no free buffer in pool so take first one and swap pages */
bb59c8a8
JW		 2653 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2654 struct qeth_buffer_pool_entry, list);
4a71df50 2655 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2656 if (page_count(entry->elements[i]) > 1) {
714c9108 2657 struct page *page = dev_alloc_page();
f81649df
JW		 2658
2659 if (!page)
4a71df50 2660 return NULL;
f81649df
JW		 2661
2662 __free_page(entry->elements[i]);
2663 entry->elements[i] = page;
2664 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2665 }
2666 }
2667 list_del_init(&entry->list);
2668 return entry;
2669}
2670
2671static int qeth_init_input_buffer(struct qeth_card *card,
2672 struct qeth_qdio_buffer *buf)
2673{
2674 struct qeth_buffer_pool_entry *pool_entry;
2675 int i;
2676
b3332930 2677 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2 2678 buf->rx_skb = netdev_alloc_skb(card->dev,
8ca8559f
JW		 2679 ETH_HLEN +
2680 sizeof(struct ipv6hdr));
b3332930 2681 if (!buf->rx_skb)
17413852 2682 return -ENOMEM;
b3332930
FB		 2683 }
2684
4a71df50
FB		 2685 pool_entry = qeth_find_free_buffer_pool_entry(card);
2686 if (!pool_entry)
17413852 2687 return -ENOBUFS;
4a71df50
FB		 2688
2689 /*
2690 * since the buffer is accessed only from the input_tasklet
2691 * there shouldn't be a need to synchronize; also, since we use
2692 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2693 * buffers
2694 */
4a71df50
FB		 2695
2696 buf->pool_entry = pool_entry;
2697 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2698 buf->buffer->element[i].length = PAGE_SIZE;
2db01da8 2699 buf->buffer->element[i].addr =
f81649df 2700 page_to_phys(pool_entry->elements[i]);
4a71df50 2701 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2702 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2703 else
3ec90878
JG		 2704 buf->buffer->element[i].eflags = 0;
2705 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2706 }
2707 return 0;
2708}
2709
8b664cd1
JW		 2710static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2711 struct qeth_qdio_out_q *queue)
2712{
2713 if (!IS_IQD(card) ||
2714 qeth_iqd_is_mcast_queue(card, queue) ||
2715 card->options.cq == QETH_CQ_ENABLED ||
2716 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2717 return 1;
2718
2719 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2720}
2721
aa3ad392 2722static int qeth_init_qdio_queues(struct qeth_card *card)
4a71df50 2723{
7b579ce5 2724 unsigned int i;
4a71df50
FB		 2725 int rc;
2726
57a688aa 2727 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2728
2729 /* inbound queue */
1b45c80b
JW		 2730 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2731 memset(&card->rx, 0, sizeof(struct qeth_rx));
17413852 2732
4a71df50
FB		 2733 qeth_initialize_working_pool_list(card);
2734 /*give only as many buffers to hardware as we have buffer pool entries*/
17413852
JW		 2735 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) {
2736 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2737 if (rc)
2738 return rc;
2739 }
2740
4a71df50
FB		 2741 card->qdio.in_q->next_buf_to_init =
2742 card->qdio.in_buf_pool.buf_count - 1;
2743 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
779e6e1c 2744 card->qdio.in_buf_pool.buf_count - 1);
4a71df50 2745 if (rc) {
57a688aa 2746 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2747 return rc;
2748 }
0da9581d
EL		 2749
2750 /* completion */
2751 rc = qeth_cq_init(card);
2752 if (rc) {
2753 return rc;
2754 }
2755
4a71df50
FB		 2756 /* outbound queue */
2757 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 2758 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2759
2760 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2761 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2762 queue->next_buf_to_fill = 0;
2763 queue->do_pack = 0;
9549d70a 2764 queue->prev_hdr = NULL;
ee1e52d1 2765 queue->coalesced_frames = 0;
9549d70a 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 3355 unsigned int bidx = QDIO_BUFNR(i);
8d145da2 3356 struct sk_buff *skb;
ec2b559d 3357
0da9581d 3358 buf = queue->bufs[bidx];
3ec90878
JG		 3359 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3360 SBAL_EFLAGS_LAST_ENTRY;
ee1e52d1 3361 queue->coalesced_frames += buf->frames;
4a71df50 3362
0da9581d
EL		 3363 if (queue->bufstates)
3364 queue->bufstates[bidx].user = buf;
3365
8d145da2
JW		 3366 if (IS_IQD(card)) {
3367 skb_queue_walk(&buf->skb_list, skb)
3368 skb_tx_timestamp(skb);
4a71df50 3369 continue;
8d145da2 3370 }
4a71df50
FB		 3371
3372 if (!queue->do_pack) {
3373 if ((atomic_read(&queue->used_buffers) >=
3374 (QETH_HIGH_WATERMARK_PACK -
3375 QETH_WATERMARK_PACK_FUZZ)) &&
3376 !atomic_read(&queue->set_pci_flags_count)) {
3377 /* it's likely that we'll go to packing
3378 * mode soon */
3379 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3380 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3381 }
3382 } else {
3383 if (!atomic_read(&queue->set_pci_flags_count)) {
3384 /*
3385 * there's no outstanding PCI any more, so we
3386 * have to request a PCI to be sure the the PCI
3387 * will wake at some time in the future then we
3388 * can flush packed buffers that might still be
3389 * hanging around, which can happen if no
3390 * further send was requested by the stack
3391 */
3392 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3393 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3394 }
3395 }
3396 }
3397
1ab2f8c6 3398 QETH_TXQ_STAT_INC(queue, doorbell);
4a71df50 3399 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
4a71df50
FB		 3400 if (atomic_read(&queue->set_pci_flags_count))
3401 qdio_flags |= QDIO_FLAG_PCI_OUT;
3402 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
779e6e1c 3403 queue->queue_no, index, count);
e53edf74
JW		 3404
3405 /* Fake the TX completion interrupt: */
ee1e52d1
JW		 3406 if (IS_IQD(card)) {
3407 unsigned int frames = READ_ONCE(queue->max_coalesced_frames);
3408 unsigned int usecs = READ_ONCE(queue->coalesce_usecs);
3409
3410 if (frames && queue->coalesced_frames >= frames) {
3411 napi_schedule(&queue->napi);
3412 queue->coalesced_frames = 0;
3413 QETH_TXQ_STAT_INC(queue, coal_frames);
3414 } else if (usecs) {
3415 qeth_tx_arm_timer(queue, usecs);
3416 }
3417 }
e53edf74 3418
4a71df50 3419 if (rc) {
d303b6fd 3420 /* ignore temporary SIGA errors without busy condition */
1549d13f 3421 if (rc == -ENOBUFS)
d303b6fd 3422 return;
847a50fd 3423 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3424 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3425 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3426 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3427 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3428
4a71df50
FB		 3429 /* this must not happen under normal circumstances. if it
3430 * happens something is really wrong -> recover */
3431 qeth_schedule_recovery(queue->card);
3432 return;
3433 }
4a71df50
FB		 3434}
3435
9549d70a
JW		 3436static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3437{
8b664cd1 3438 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3439
8b664cd1 3440 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3441 queue->prev_hdr = NULL;
8b664cd1 3442 queue->bulk_count = 0;
9549d70a
JW		 3443}
3444
4a71df50
FB		 3445static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3446{
3447 int index;
3448 int flush_cnt = 0;
3449 int q_was_packing = 0;
3450
3451 /*
3452 * check if weed have to switch to non-packing mode or if
3453 * we have to get a pci flag out on the queue
3454 */
3455 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3456 !atomic_read(&queue->set_pci_flags_count)) {
3457 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3458 QETH_OUT_Q_UNLOCKED) {
3459 /*
3460 * If we get in here, there was no action in
3461 * do_send_packet. So, we check if there is a
3462 * packing buffer to be flushed here.
3463 */
4a71df50
FB		 3464 index = queue->next_buf_to_fill;
3465 q_was_packing = queue->do_pack;
3466 /* queue->do_pack may change */
3467 barrier();
3468 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3469 if (!flush_cnt &&
3470 !atomic_read(&queue->set_pci_flags_count))
664e42ac 3471 flush_cnt += qeth_prep_flush_pack_buffer(queue);
b0abc4f5
JW		 3472 if (q_was_packing)
3473 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3474 if (flush_cnt)
779e6e1c 3475 qeth_flush_buffers(queue, index, flush_cnt);
4a71df50
FB		 3476 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3477 }
3478 }
3479}
3480
0a6e6345 3481static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
a1c3ed4c
FB		 3482{
3483 struct qeth_card *card = (struct qeth_card *)card_ptr;
3484
3d35dbe6 3485 napi_schedule_irqoff(&card->napi);
a1c3ed4c 3486}
a1c3ed4c 3487
0da9581d
EL		 3488int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3489{
3490 int rc;
3491
3492 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3493 rc = -1;
3494 goto out;
3495 } else {
3496 if (card->options.cq == cq) {
3497 rc = 0;
3498 goto out;
3499 }
3500
41c47da3 3501 qeth_free_qdio_queues(card);
0da9581d
EL		 3502 card->options.cq = cq;
3503 rc = 0;
3504 }
3505out:
3506 return rc;
3507
3508}
3509EXPORT_SYMBOL_GPL(qeth_configure_cq);
3510
3b346c18
JW		 3511static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3512 unsigned int queue, int first_element,
3513 int count)
3514{
0da9581d
EL		 3515 struct qeth_qdio_q *cq = card->qdio.c_q;
3516 int i;
3517 int rc;
3518
0da9581d
EL		 3519 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3520 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3521 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3522
3523 if (qdio_err) {
3a18d754 3524 netif_tx_stop_all_queues(card->dev);
0da9581d 3525 qeth_schedule_recovery(card);
4326b5b4 3526 return;
0da9581d
EL		 3527 }
3528
3529 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3530 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3531 int e = 0;
0da9581d 3532
903e4853
UB		 3533 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3534 buffer->element[e].addr) {
2db01da8 3535 unsigned long phys_aob_addr = buffer->element[e].addr;
0da9581d 3536
0da9581d 3537 qeth_qdio_handle_aob(card, phys_aob_addr);
0da9581d
EL		 3538 ++e;
3539 }
3b346c18 3540 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d
EL		 3541 }
3542 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3543 card->qdio.c_q->next_buf_to_init,
3544 count);
3545 if (rc) {
3546 dev_warn(&card->gdev->dev,
3547 "QDIO reported an error, rc=%i\n", rc);
3548 QETH_CARD_TEXT(card, 2, "qcqherr");
3549 }
ec2b559d
JW		 3550
3551 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3552}
3553
7bcd64eb
JW		 3554static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3555 unsigned int qdio_err, int queue,
3556 int first_elem, int count,
3557 unsigned long card_ptr)
a1c3ed4c
FB		 3558{
3559 struct qeth_card *card = (struct qeth_card *)card_ptr;
3560
0da9581d
EL		 3561 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3562 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3563
0a6e6345 3564 if (qdio_err)
a1c3ed4c
FB		 3565 qeth_schedule_recovery(card);
3566}
a1c3ed4c 3567
7bcd64eb
JW		 3568static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3569 unsigned int qdio_error, int __queue,
3570 int first_element, int count,
3571 unsigned long card_ptr)
4a71df50
FB		 3572{
3573 struct qeth_card *card = (struct qeth_card *) card_ptr;
3574 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3a18d754 3575 struct net_device *dev = card->dev;
54a50941 3576 struct netdev_queue *txq;
4a71df50
FB		 3577 int i;
3578
847a50fd 3579 QETH_CARD_TEXT(card, 6, "qdouhdl");
1549d13f 3580 if (qdio_error & QDIO_ERROR_FATAL) {
847a50fd 3581 QETH_CARD_TEXT(card, 2, "achkcond");
3a18d754 3582 netif_tx_stop_all_queues(dev);
779e6e1c
JG		 3583 qeth_schedule_recovery(card);
3584 return;
4a71df50 3585 }
4326b5b4 3586
4a71df50 3587 for (i = first_element; i < (first_element + count); ++i) {
ec2b559d
JW		 3588 struct qeth_qdio_out_buffer *buf = queue->bufs[QDIO_BUFNR(i)];
3589
3590 qeth_handle_send_error(card, buf, qdio_error);
3591 qeth_clear_output_buffer(queue, buf, qdio_error, 0);
4a71df50 3592 }
e53edf74 3593
4a71df50 3594 atomic_sub(count, &queue->used_buffers);
e53edf74 3595 qeth_check_outbound_queue(queue);
4a71df50 3596
54a50941
JW		 3597 txq = netdev_get_tx_queue(dev, __queue);
3598 /* xmit may have observed the full-condition, but not yet stopped the
3599 * txq. In which case the code below won't trigger. So before returning,
3600 * xmit will re-check the txq's fill level and wake it up if needed.
3601 */
3602 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3603 netif_tx_wake_queue(txq);
4a71df50 3604}
4a71df50 3605
290b8348
SR		 3606/**
3607 * Note: Function assumes that we have 4 outbound queues.
3608 */
73dc2daf 3609int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3610{
e6c15b5f 3611 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3612 u8 tos;
3613
290b8348
SR		 3614 switch (card->qdio.do_prio_queueing) {
3615 case QETH_PRIO_Q_ING_TOS:
3616 case QETH_PRIO_Q_ING_PREC:
73dc2daf 3617 switch (qeth_get_ip_version(skb)) {
290b8348
SR		 3618 case 4:
3619 tos = ipv4_get_dsfield(ip_hdr(skb));
3620 break;
3621 case 6:
3622 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3623 break;
3624 default:
3625 return card->qdio.default_out_queue;
4a71df50 3626 }
290b8348 3627 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3628 return ~tos >> 6 & 3;
290b8348 3629 if (tos & IPTOS_MINCOST)
e6c15b5f 3630 return 3;
290b8348
SR		 3631 if (tos & IPTOS_RELIABILITY)
3632 return 2;
3633 if (tos & IPTOS_THROUGHPUT)
3634 return 1;
3635 if (tos & IPTOS_LOWDELAY)
3636 return 0;
d66cb37e
SR		 3637 break;
3638 case QETH_PRIO_Q_ING_SKB:
3639 if (skb->priority > 5)
3640 return 0;
e6c15b5f 3641 return ~skb->priority >> 1 & 3;
d66cb37e 3642 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3643 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3644 return ~ntohs(veth->h_vlan_TCI) >>
3645 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3646 break;
c91a1fb7
JW		 3647 case QETH_PRIO_Q_ING_FIXED:
3648 return card->qdio.default_out_queue;
4a71df50 3649 default:
290b8348 3650 break;
4a71df50 3651 }
290b8348 3652 return card->qdio.default_out_queue;
4a71df50
FB		 3653}
3654EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3655
2863c613
EC		 3656/**
3657 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3658 * @skb: SKB address
3659 *
3660 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3661 * fragmented part of the SKB. Returns zero for linear SKB.
3662 */
356156b6 3663static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3664{
2863c613 3665 int cnt, elements = 0;
271648b4
FB		 3666
3667 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3668 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3669
3670 elements += qeth_get_elements_for_range(
3671 (addr_t)skb_frag_address(frag),
3672 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3673 }
3674 return elements;
3675}
271648b4 3676
40e6a225
JW		 3677/**
3678 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3679 * to transmit an skb.
3680 * @skb: the skb to operate on.
3681 * @data_offset: skip this part of the skb's linear data
3682 *
3683 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3684 * skb's data (both its linear part and paged fragments).
3685 */
3686unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
ba86ceee
JW		 3687{
3688 unsigned int elements = qeth_get_elements_for_frags(skb);
3689 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3690 addr_t start = (addr_t)skb->data + data_offset;
3691
3692 if (start != end)
3693 elements += qeth_get_elements_for_range(start, end);
3694 return elements;
3695}
40e6a225 3696EXPORT_SYMBOL_GPL(qeth_count_elements);
4a71df50 3697
e517b649
JW		 3698#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3699 MAX_TCP_HEADER)
55494264 3700
0d6f02d3 3701/**
ba86ceee
JW		 3702 * qeth_add_hw_header() - add a HW header to an skb.
3703 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3704 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3705 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3706 * @hdr_len: length of the HW header.
3707 * @proto_len: length of protocol headers that need to be in same page as the
3708 * HW header.
0d6f02d3
JW		 3709 *
3710 * Returns the pushed length. If the header can't be pushed on
3711 * (eg. because it would cross a page boundary), it is allocated from
3712 * the cache instead and 0 is returned.
ba86ceee 3713 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3714 * Error to create the hdr is indicated by returning with < 0.
3715 */
b0abc4f5
JW		 3716static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3717 struct sk_buff *skb, struct qeth_hdr **hdr,
3718 unsigned int hdr_len, unsigned int proto_len,
3719 unsigned int *elements)
ba86ceee 3720{
b413ff8a 3721 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
a7c2f4a3 3722 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3723 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3724 unsigned int __elements;
3725 addr_t start, end;
3726 bool push_ok;
3727 int rc;
3728
3729check_layout:
a7c2f4a3 3730 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3731 end = (addr_t)skb->data;
3732
a7c2f4a3 3733 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3734 /* Push HW header into same page as first protocol header. */
3735 push_ok = true;
e517b649
JW		 3736 /* ... but TSO always needs a separate element for headers: */
3737 if (skb_is_gso(skb))
3738 __elements = 1 + qeth_count_elements(skb, proto_len);
3739 else
3740 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3741 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3742 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3743 push_ok = true;
ba86ceee 3744 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3745 } else {
3746 /* Use header cache, copy protocol headers up. */
3747 push_ok = false;
3748 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3749 }
3750
3751 /* Compress skb to fit into one IO buffer: */
3752 if (__elements > max_elements) {
3753 if (!skb_is_nonlinear(skb)) {
3754 /* Drop it, no easy way of shrinking it further. */
3755 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3756 max_elements, __elements, skb->len);
3757 return -E2BIG;
3758 }
3759
3760 rc = skb_linearize(skb);
b0abc4f5
JW		 3761 if (rc) {
3762 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3763 return rc;
b0abc4f5 3764 }
ba86ceee 3765
b0abc4f5 3766 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 3767 /* Linearization changed the layout, re-evaluate: */
3768 goto check_layout;
3769 }
3770
3771 *elements = __elements;
3772 /* Add the header: */
3773 if (push_ok) {
a7c2f4a3
JW		 3774 *hdr = skb_push(skb, hdr_len);
3775 return hdr_len;
0d6f02d3 3776 }
b413ff8a
JW		 3777
3778 /* Fall back to cache element with known-good alignment: */
55494264
JW		 3779 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3780 return -E2BIG;
b413ff8a 3781 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
0d6f02d3
JW		 3782 if (!*hdr)
3783 return -ENOMEM;
a7c2f4a3
JW		 3784 /* Copy protocol headers behind HW header: */
3785 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 3786 return 0;
3787}
0d6f02d3 3788
9549d70a 3789static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 3790 struct sk_buff *curr_skb,
3791 struct qeth_hdr *curr_hdr)
3792{
8b664cd1 3793 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 3794 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3795
3796 if (!prev_hdr)
3797 return true;
3798
3799 /* All packets must have the same target: */
3800 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3801 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3802
3803 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3804 eth_hdr(curr_skb)->h_dest) &&
3805 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3806 }
3807
3808 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3809 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3810}
3811
3812static unsigned int __qeth_fill_buffer(struct sk_buff *skb,
3813 struct qeth_qdio_out_buffer *buf,
3814 bool is_first_elem, unsigned int offset)
4a71df50 3815{
384d2ef1
JW		 3816 struct qdio_buffer *buffer = buf->buffer;
3817 int element = buf->next_element_to_fill;
cc309f83
JW		 3818 int length = skb_headlen(skb) - offset;
3819 char *data = skb->data + offset;
4e2fe4ed 3820 unsigned int elem_length, cnt;
4a71df50 3821
cc309f83 3822 /* map linear part into buffer element(s) */
4a71df50 3823 while (length > 0) {
4e2fe4ed
JW		 3824 elem_length = min_t(unsigned int, length,
3825 PAGE_SIZE - offset_in_page(data));
4a71df50 3826
2db01da8 3827 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed
JW		 3828 buffer->element[element].length = elem_length;
3829 length -= elem_length;
384d2ef1
JW		 3830 if (is_first_elem) {
3831 is_first_elem = false;
5258830b
JW		 3832 if (length || skb_is_nonlinear(skb))
3833 /* skb needs additional elements */
3ec90878 3834 buffer->element[element].eflags =
5258830b 3835 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 3836 else
5258830b
JW		 3837 buffer->element[element].eflags = 0;
3838 } else {
3839 buffer->element[element].eflags =
3840 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 3841 }
4e2fe4ed
JW		 3842
3843 data += elem_length;
4a71df50 3844 element++;
4a71df50 3845 }
51aa165c 3846
cc309f83 3847 /* map page frags into buffer element(s) */
51aa165c 3848 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 3849 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3850
3851 data = skb_frag_address(frag);
3852 length = skb_frag_size(frag);
271648b4 3853 while (length > 0) {
4e2fe4ed
JW		 3854 elem_length = min_t(unsigned int, length,
3855 PAGE_SIZE - offset_in_page(data));
271648b4 3856
2db01da8 3857 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed 3858 buffer->element[element].length = elem_length;
271648b4
FB		 3859 buffer->element[element].eflags =
3860 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 3861
3862 length -= elem_length;
3863 data += elem_length;
271648b4
FB		 3864 element++;
3865 }
51aa165c
FB		 3866 }
3867
3ec90878
JG		 3868 if (buffer->element[element - 1].eflags)
3869 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 3870 buf->next_element_to_fill = element;
9549d70a 3871 return element;
4a71df50
FB		 3872}
3873
eaf3cc08
JW		 3874/**
3875 * qeth_fill_buffer() - map skb into an output buffer
eaf3cc08
JW		 3876 * @buf: buffer to transport the skb
3877 * @skb: skb to map into the buffer
3878 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3879 * from qeth_core_header_cache.
3880 * @offset: when mapping the skb, start at skb->data + offset
3881 * @hd_len: if > 0, build a dedicated header element of this size
3882 */
9549d70a
JW		 3883static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3884 struct sk_buff *skb, struct qeth_hdr *hdr,
3885 unsigned int offset, unsigned int hd_len)
4a71df50 3886{
eaf3cc08 3887 struct qdio_buffer *buffer = buf->buffer;
384d2ef1 3888 bool is_first_elem = true;
4a71df50 3889
dc149e37 3890 __skb_queue_tail(&buf->skb_list, skb);
4a71df50 3891
eaf3cc08
JW		 3892 /* build dedicated header element */
3893 if (hd_len) {
683d718a 3894 int element = buf->next_element_to_fill;
384d2ef1
JW		 3895 is_first_elem = false;
3896
2db01da8 3897 buffer->element[element].addr = virt_to_phys(hdr);
f1588177 3898 buffer->element[element].length = hd_len;
3ec90878 3899 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
eaf3cc08
JW		 3900 /* remember to free cache-allocated qeth_hdr: */
3901 buf->is_header[element] = ((void *)hdr != skb->data);
683d718a
FB		 3902 buf->next_element_to_fill++;
3903 }
3904
9549d70a 3905 return __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4a71df50
FB		 3906}
3907
9549d70a
JW		 3908static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3909 struct sk_buff *skb, unsigned int elements,
3910 struct qeth_hdr *hdr, unsigned int offset,
3911 unsigned int hd_len)
4a71df50 3912{
96bd6c94 3913 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 3914 struct qeth_qdio_out_buffer *buffer;
9549d70a 3915 unsigned int next_element;
54a50941
JW		 3916 struct netdev_queue *txq;
3917 bool stopped = false;
9549d70a
JW		 3918 bool flush;
3919
8b664cd1 3920 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 3921 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 3922
54a50941
JW		 3923 /* Just a sanity check, the wake/stop logic should ensure that we always
3924 * get a free buffer.
4a71df50
FB		 3925 */
3926 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 3927 return -EBUSY;
54a50941 3928
8b664cd1
JW		 3929 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
3930
3931 if (flush ||
3932 (buffer->next_element_to_fill + elements > queue->max_elements)) {
3933 if (buffer->next_element_to_fill > 0) {
3934 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3935 queue->bulk_count++;
3936 }
3937
3938 if (queue->bulk_count >= queue->bulk_max)
3939 flush = true;
3940
3941 if (flush)
3942 qeth_flush_queue(queue);
3943
3944 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
3945 queue->bulk_count)];
54a50941 3946
9549d70a
JW		 3947 /* Sanity-check again: */
3948 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3949 return -EBUSY;
3950 }
3951
3952 if (buffer->next_element_to_fill == 0 &&
3953 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 3954 /* If a TX completion happens right _here_ and misses to wake
3955 * the txq, then our re-check below will catch the race.
3956 */
3957 QETH_TXQ_STAT_INC(queue, stopped);
3958 netif_tx_stop_queue(txq);
3959 stopped = true;
3960 }
3961
9549d70a 3962 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 3963 buffer->bytes += bytes;
1ab2f8c6 3964 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a 3965 queue->prev_hdr = hdr;
96bd6c94 3966
9549d70a
JW		 3967 flush = __netdev_tx_sent_queue(txq, bytes,
3968 !stopped && netdev_xmit_more());
3969
3970 if (flush || next_element >= queue->max_elements) {
3971 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 3972 queue->bulk_count++;
3973
3974 if (queue->bulk_count >= queue->bulk_max)
3975 flush = true;
3976
3977 if (flush)
3978 qeth_flush_queue(queue);
9549d70a 3979 }
54a50941
JW		 3980
3981 if (stopped && !qeth_out_queue_is_full(queue))
3982 netif_tx_start_queue(txq);
4a71df50 3983 return 0;
4a71df50 3984}
4a71df50
FB		 3985
3986int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
13ddacb5 3987 struct sk_buff *skb, struct qeth_hdr *hdr,
9c3bfda9
JW		 3988 unsigned int offset, unsigned int hd_len,
3989 int elements_needed)
4a71df50
FB		 3990{
3991 struct qeth_qdio_out_buffer *buffer;
9549d70a 3992 unsigned int next_element;
54a50941
JW		 3993 struct netdev_queue *txq;
3994 bool stopped = false;
4a71df50
FB		 3995 int start_index;
3996 int flush_count = 0;
3997 int do_pack = 0;
3998 int tmp;
3999 int rc = 0;
4000
4a71df50
FB		 4001 /* spin until we get the queue ... */
4002 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4003 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4004 start_index = queue->next_buf_to_fill;
0da9581d 4005 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4006
4007 /* Just a sanity check, the wake/stop logic should ensure that we always
4008 * get a free buffer.
4a71df50
FB		 4009 */
4010 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4011 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4012 return -EBUSY;
4013 }
54a50941
JW		 4014
4015 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4016
4a71df50
FB		 4017 /* check if we need to switch packing state of this queue */
4018 qeth_switch_to_packing_if_needed(queue);
4019 if (queue->do_pack) {
4020 do_pack = 1;
64ef8957 4021 /* does packet fit in current buffer? */
4e26c5fe
JW		 4022 if (buffer->next_element_to_fill + elements_needed >
4023 queue->max_elements) {
64ef8957
FB		 4024 /* ... no -> set state PRIMED */
4025 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4026 flush_count++;
4027 queue->next_buf_to_fill =
ec2b559d 4028 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 4029 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4030
4031 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 4032 if (atomic_read(&buffer->state) !=
4033 QETH_QDIO_BUF_EMPTY) {
4034 qeth_flush_buffers(queue, start_index,
779e6e1c 4035 flush_count);
64ef8957 4036 atomic_set(&queue->state,
4a71df50 4037 QETH_OUT_Q_UNLOCKED);
3cdc8a25
JW		 4038 rc = -EBUSY;
4039 goto out;
4a71df50
FB		 4040 }
4041 }
4042 }
f72b4644 4043
54a50941
JW		 4044 if (buffer->next_element_to_fill == 0 &&
4045 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4046 /* If a TX completion happens right _here_ and misses to wake
4047 * the txq, then our re-check below will catch the race.
4048 */
4049 QETH_TXQ_STAT_INC(queue, stopped);
4050 netif_tx_stop_queue(txq);
4051 stopped = true;
4052 }
4053
9549d70a 4054 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
1ab2f8c6
JW		 4055 buffer->bytes += qdisc_pkt_len(skb);
4056 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a
JW		 4057
4058 if (queue->do_pack)
4059 QETH_TXQ_STAT_INC(queue, skbs_pack);
4060 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4061 flush_count++;
4062 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 4063 queue->next_buf_to_fill =
4064 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 4065 }
4066
4a71df50 4067 if (flush_count)
779e6e1c 4068 qeth_flush_buffers(queue, start_index, flush_count);
4a71df50
FB		 4069 else if (!atomic_read(&queue->set_pci_flags_count))
4070 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4071 /*
4072 * queue->state will go from LOCKED -> UNLOCKED or from
4073 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4074 * (switch packing state or flush buffer to get another pci flag out).
4075 * In that case we will enter this loop
4076 */
4077 while (atomic_dec_return(&queue->state)) {
4a71df50
FB		 4078 start_index = queue->next_buf_to_fill;
4079 /* check if we can go back to non-packing state */
3cdc8a25 4080 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4a71df50
FB		 4081 /*
4082 * check if we need to flush a packing buffer to get a pci
4083 * flag out on the queue
4084 */
3cdc8a25
JW		 4085 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4086 tmp = qeth_prep_flush_pack_buffer(queue);
4087 if (tmp) {
4088 qeth_flush_buffers(queue, start_index, tmp);
4089 flush_count += tmp;
4090 }
4a71df50 4091 }
3cdc8a25 4092out:
4a71df50 4093 /* at this point the queue is UNLOCKED again */
b0abc4f5
JW		 4094 if (do_pack)
4095 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4096
54a50941
JW		 4097 if (stopped && !qeth_out_queue_is_full(queue))
4098 netif_tx_start_queue(txq);
4a71df50
FB		 4099 return rc;
4100}
4101EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4102
81ec5439
JW		 4103static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4104 unsigned int payload_len, struct sk_buff *skb,
4105 unsigned int proto_len)
82bf5c08
JW		 4106{
4107 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4108
4109 ext->hdr_tot_len = sizeof(*ext);
4110 ext->imb_hdr_no = 1;
4111 ext->hdr_type = 1;
4112 ext->hdr_version = 1;
4113 ext->hdr_len = 28;
4114 ext->payload_len = payload_len;
4115 ext->mss = skb_shinfo(skb)->gso_size;
4116 ext->dg_hdr_len = proto_len;
4117}
82bf5c08 4118
fc69660b 4119int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
eca1d5c2 4120 struct qeth_qdio_out_q *queue, int ipv,
b0abc4f5
JW		 4121 void (*fill_header)(struct qeth_qdio_out_q *queue,
4122 struct qeth_hdr *hdr, struct sk_buff *skb,
eca1d5c2 4123 int ipv, unsigned int data_len))
fc69660b 4124{
82bf5c08 4125 unsigned int proto_len, hw_hdr_len;
fc69660b 4126 unsigned int frame_len = skb->len;
82bf5c08 4127 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4128 unsigned int data_offset = 0;
4129 struct qeth_hdr *hdr = NULL;
4130 unsigned int hd_len = 0;
4131 unsigned int elements;
4132 int push_len, rc;
fc69660b 4133
82bf5c08
JW		 4134 if (is_tso) {
4135 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4136 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4137 } else {
4138 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4139 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4140 }
4141
fc69660b
JW		 4142 rc = skb_cow_head(skb, hw_hdr_len);
4143 if (rc)
4144 return rc;
4145
b0abc4f5 4146 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4147 &elements);
4148 if (push_len < 0)
4149 return push_len;
82bf5c08 4150 if (is_tso || !push_len) {
fc69660b
JW		 4151 /* HW header needs its own buffer element. */
4152 hd_len = hw_hdr_len + proto_len;
82bf5c08 4153 data_offset = push_len + proto_len;
fc69660b 4154 }
e517b649 4155 memset(hdr, 0, hw_hdr_len);
eca1d5c2 4156 fill_header(queue, hdr, skb, ipv, frame_len);
82bf5c08
JW		 4157 if (is_tso)
4158 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4159 frame_len - proto_len, skb, proto_len);
fc69660b 4160
fc69660b 4161 if (IS_IQD(card)) {
9549d70a
JW		 4162 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4163 hd_len);
fc69660b
JW		 4164 } else {
4165 /* TODO: drop skb_orphan() once TX completion is fast enough */
4166 skb_orphan(skb);
4167 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4168 hd_len, elements);
4169 }
4170
eeac0e20
JW		 4171 if (rc && !push_len)
4172 kmem_cache_free(qeth_core_header_cache, hdr);
4173
fc69660b
JW		 4174 return rc;
4175}
4176EXPORT_SYMBOL_GPL(qeth_xmit);
4177
4a71df50
FB		 4178static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4179 struct qeth_reply *reply, unsigned long data)
4180{
686c97ee 4181 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4182 struct qeth_ipacmd_setadpparms *setparms;
4183
847a50fd 4184 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4185
4a71df50 4186 setparms = &(cmd->data.setadapterparms);
686c97ee 4187 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4188 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4189 setparms->data.mode = SET_PROMISC_MODE_OFF;
4190 }
4191 card->info.promisc_mode = setparms->data.mode;
742d4d40 4192 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4193}
4194
59b757a9 4195void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4196{
59b757a9
JW		 4197 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4198 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4199 struct qeth_cmd_buffer *iob;
4200 struct qeth_ipa_cmd *cmd;
4201
847a50fd 4202 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4203 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4204
4205 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4206 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4207 if (!iob)
4208 return;
ff5caa7a 4209 cmd = __ipa_cmd(iob);
4a71df50
FB		 4210 cmd->data.setadapterparms.data.mode = mode;
4211 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4212}
4213EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4214
4a71df50
FB		 4215static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4216 struct qeth_reply *reply, unsigned long data)
4217{
686c97ee 4218 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4219 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4220
847a50fd 4221 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4222 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4223 return -EIO;
4a71df50 4224
b144b99f 4225 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4226 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4227 return -EADDRNOTAVAIL;
4228
b144b99f
JW		 4229 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4230 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4231 return -EADDRNOTAVAIL;
b144b99f
JW		 4232
4233 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4234 return 0;
4235}
4236
4237int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4238{
4239 int rc;
4240 struct qeth_cmd_buffer *iob;
4241 struct qeth_ipa_cmd *cmd;
4242
847a50fd 4243 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4244
4245 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4246 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4247 if (!iob)
4248 return -ENOMEM;
ff5caa7a 4249 cmd = __ipa_cmd(iob);
4a71df50 4250 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4251 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4252 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4253 card->dev->dev_addr);
4a71df50
FB		 4254 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4255 NULL);
4256 return rc;
4257}
4258EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4259
d64ecc22
EL		 4260static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4261 struct qeth_reply *reply, unsigned long data)
4262{
686c97ee 4263 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4264 struct qeth_set_access_ctrl *access_ctrl_req;
0f54761d 4265 int fallback = *(int *)reply->param;
d64ecc22 4266
847a50fd 4267 QETH_CARD_TEXT(card, 4, "setaccb");
686c97ee 4268 if (cmd->hdr.return_code)
742d4d40 4269 return -EIO;
686c97ee 4270 qeth_setadpparms_inspect_rc(cmd);
d64ecc22 4271
d64ecc22 4272 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4273 QETH_CARD_TEXT_(card, 2, "rc=%d",
4274 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4275 if (cmd->data.setadapterparms.hdr.return_code !=
4276 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4277 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4278 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4279 cmd->data.setadapterparms.hdr.return_code);
d64ecc22
EL		 4280 switch (cmd->data.setadapterparms.hdr.return_code) {
4281 case SET_ACCESS_CTRL_RC_SUCCESS:
d64ecc22
EL		 4282 if (card->options.isolation == ISOLATION_MODE_NONE) {
4283 dev_info(&card->gdev->dev,
4284 "QDIO data connection isolation is deactivated\n");
4285 } else {
4286 dev_info(&card->gdev->dev,
4287 "QDIO data connection isolation is activated\n");
4288 }
d64ecc22 4289 break;
0f54761d 4290 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4291 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4292 CARD_DEVID(card));
0f54761d
SR		 4293 if (fallback)
4294 card->options.isolation = card->options.prev_isolation;
4295 break;
4296 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4297 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4298 CARD_DEVID(card));
0f54761d
SR		 4299 if (fallback)
4300 card->options.isolation = card->options.prev_isolation;
4301 break;
d64ecc22 4302 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4303 dev_err(&card->gdev->dev, "Adapter does not "
4304 "support QDIO data connection isolation\n");
d64ecc22 4305 break;
d64ecc22 4306 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4307 dev_err(&card->gdev->dev,
4308 "Adapter is dedicated. "
4309 "QDIO data connection isolation not supported\n");
0f54761d
SR		 4310 if (fallback)
4311 card->options.isolation = card->options.prev_isolation;
d64ecc22 4312 break;
d64ecc22 4313 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4314 dev_err(&card->gdev->dev,
4315 "TSO does not permit QDIO data connection isolation\n");
0f54761d
SR		 4316 if (fallback)
4317 card->options.isolation = card->options.prev_isolation;
4318 break;
4319 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4320 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4321 "support reflective relay mode\n");
4322 if (fallback)
4323 card->options.isolation = card->options.prev_isolation;
4324 break;
4325 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4326 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4327 "enabled at the adjacent switch port");
4328 if (fallback)
4329 card->options.isolation = card->options.prev_isolation;
4330 break;
4331 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4332 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4333 "at the adjacent switch failed\n");
d64ecc22 4334 break;
d64ecc22 4335 default:
d64ecc22 4336 /* this should never happen */
0f54761d
SR		 4337 if (fallback)
4338 card->options.isolation = card->options.prev_isolation;
d64ecc22
EL		 4339 break;
4340 }
742d4d40 4341 return (cmd->hdr.return_code) ? -EIO : 0;
d64ecc22
EL		 4342}
4343
4344static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
0f54761d 4345 enum qeth_ipa_isolation_modes isolation, int fallback)
d64ecc22
EL		 4346{
4347 int rc;
4348 struct qeth_cmd_buffer *iob;
4349 struct qeth_ipa_cmd *cmd;
4350 struct qeth_set_access_ctrl *access_ctrl_req;
4351
847a50fd 4352 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4353
d64ecc22 4354 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4355 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4356 if (!iob)
4357 return -ENOMEM;
ff5caa7a 4358 cmd = __ipa_cmd(iob);
d64ecc22
EL		 4359 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4360 access_ctrl_req->subcmd_code = isolation;
4361
4362 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
0f54761d 4363 &fallback);
57a688aa 4364 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
d64ecc22
EL		 4365 return rc;
4366}
4367
0f54761d 4368int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
d64ecc22
EL		 4369{
4370 int rc = 0;
4371
847a50fd 4372 QETH_CARD_TEXT(card, 4, "setactlo");
d64ecc22 4373
379ac99e
JW		 4374 if ((IS_OSD(card) || IS_OSX(card)) &&
4375 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
d64ecc22 4376 rc = qeth_setadpparms_set_access_ctrl(card,
0f54761d 4377 card->options.isolation, fallback);
d64ecc22 4378 if (rc) {
e19e5be8
JW		 4379 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4380 rc, CARD_DEVID(card));
0f54761d 4381 rc = -EOPNOTSUPP;
d64ecc22
EL		 4382 }
4383 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4384 card->options.isolation = ISOLATION_MODE_NONE;
4385
4386 dev_err(&card->gdev->dev, "Adapter does not "
4387 "support QDIO data connection isolation\n");
4388 rc = -EOPNOTSUPP;
4389 }
4390 return rc;
4391}
d64ecc22 4392
0290bd29 4393void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4a71df50
FB		 4394{
4395 struct qeth_card *card;
4396
509e2562 4397 card = dev->ml_priv;
847a50fd 4398 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4399 qeth_schedule_recovery(card);
4400}
4401EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4402
942d6984 4403static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4404{
509e2562 4405 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4406 int rc = 0;
4407
4408 switch (regnum) {
4409 case MII_BMCR: /* Basic mode control register */
4410 rc = BMCR_FULLDPLX;
4411 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4412 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
54e049c2
JW		 4413 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4414 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4415 rc |= BMCR_SPEED100;
4416 break;
4417 case MII_BMSR: /* Basic mode status register */
4418 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4419 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4420 BMSR_100BASE4;
4421 break;
4422 case MII_PHYSID1: /* PHYS ID 1 */
4423 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4424 dev->dev_addr[2];
4425 rc = (rc >> 5) & 0xFFFF;
4426 break;
4427 case MII_PHYSID2: /* PHYS ID 2 */
4428 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4429 break;
4430 case MII_ADVERTISE: /* Advertisement control reg */
4431 rc = ADVERTISE_ALL;
4432 break;
4433 case MII_LPA: /* Link partner ability reg */
4434 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4435 LPA_100BASE4 | LPA_LPACK;
4436 break;
4437 case MII_EXPANSION: /* Expansion register */
4438 break;
4439 case MII_DCOUNTER: /* disconnect counter */
4440 break;
4441 case MII_FCSCOUNTER: /* false carrier counter */
4442 break;
4443 case MII_NWAYTEST: /* N-way auto-neg test register */
4444 break;
4445 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4446 rc = card->stats.rx_length_errors +
4447 card->stats.rx_frame_errors +
4448 card->stats.rx_fifo_errors;
4a71df50
FB		 4449 break;
4450 case MII_SREVISION: /* silicon revision */
4451 break;
4452 case MII_RESV1: /* reserved 1 */
4453 break;
4454 case MII_LBRERROR: /* loopback, rx, bypass error */
4455 break;
4456 case MII_PHYADDR: /* physical address */
4457 break;
4458 case MII_RESV2: /* reserved 2 */
4459 break;
4460 case MII_TPISTATUS: /* TPI status for 10mbps */
4461 break;
4462 case MII_NCONFIG: /* network interface config */
4463 break;
4464 default:
4465 break;
4466 }
4467 return rc;
4468}
4a71df50 4469
4a71df50 4470static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4471 struct qeth_reply *reply, unsigned long data)
4a71df50 4472{
7c5f8ffb
JW		 4473 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4474 struct qeth_arp_query_info *qinfo = reply->param;
4475 struct qeth_ipacmd_setadpparms *adp_cmd;
4476 unsigned int data_len;
9a764c1e 4477 void *snmp_data;
4a71df50 4478
847a50fd 4479 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4480
4a71df50 4481 if (cmd->hdr.return_code) {
8a593148 4482 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4483 return -EIO;
4a71df50
FB		 4484 }
4485 if (cmd->data.setadapterparms.hdr.return_code) {
4486 cmd->hdr.return_code =
4487 cmd->data.setadapterparms.hdr.return_code;
8a593148 4488 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4489 return -EIO;
4a71df50 4490 }
7c5f8ffb
JW		 4491
4492 adp_cmd = &cmd->data.setadapterparms;
4493 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4494 if (adp_cmd->hdr.seq_no == 1) {
4495 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4496 } else {
7c5f8ffb
JW		 4497 snmp_data = &adp_cmd->data.snmp.request;
4498 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4499 }
4a71df50
FB		 4500
4501 /* check if there is enough room in userspace */
4502 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4503 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4504 return -ENOSPC;
4a71df50 4505 }
847a50fd 4506 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4507 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4508 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4509 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4510 /*copy entries to user buffer*/
9a764c1e 4511 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4512 qinfo->udata_offset += data_len;
9a764c1e 4513
4a71df50
FB		 4514 if (cmd->data.setadapterparms.hdr.seq_no <
4515 cmd->data.setadapterparms.hdr.used_total)
4516 return 1;
4517 return 0;
4518}
4519
942d6984 4520static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4521{
d4c08afa 4522 struct qeth_snmp_ureq __user *ureq;
4a71df50 4523 struct qeth_cmd_buffer *iob;
6fb392b1 4524 unsigned int req_len;
4a71df50
FB		 4525 struct qeth_arp_query_info qinfo = {0, };
4526 int rc = 0;
4527
847a50fd 4528 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4529
379ac99e 4530 if (IS_VM_NIC(card))
4a71df50
FB		 4531 return -EOPNOTSUPP;
4532
4533 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4534 IS_LAYER3(card))
4a71df50 4535 return -EOPNOTSUPP;
4fda3354 4536
d4c08afa
JW		 4537 ureq = (struct qeth_snmp_ureq __user *) udata;
4538 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4539 get_user(req_len, &ureq->hdr.req_len))
4540 return -EFAULT;
4541
292a50e3
JW		 4542 /* Sanitize user input, to avoid overflows in iob size calculation: */
4543 if (req_len > QETH_BUFSIZE)
4544 return -EINVAL;
4545
d4c08afa
JW		 4546 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4547 if (!iob)
4548 return -ENOMEM;
4549
4550 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4551 &ureq->cmd, req_len)) {
4552 qeth_put_cmd(iob);
4a71df50 4553 return -EFAULT;
d4c08afa
JW		 4554 }
4555
4a71df50
FB		 4556 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4557 if (!qinfo.udata) {
d4c08afa 4558 qeth_put_cmd(iob);
4a71df50
FB		 4559 return -ENOMEM;
4560 }
4561 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4562
c2153277 4563 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4564 if (rc)
e19e5be8
JW		 4565 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4566 CARD_DEVID(card), rc);
4a71df50
FB		 4567 else {
4568 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4569 rc = -EFAULT;
4570 }
d4c08afa 4571
4a71df50
FB		 4572 kfree(qinfo.udata);
4573 return rc;
4574}
4a71df50 4575
c3ab96f3
FB		 4576static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4577 struct qeth_reply *reply, unsigned long data)
4578{
686c97ee 4579 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
c3ab96f3
FB		 4580 struct qeth_qoat_priv *priv;
4581 char *resdata;
4582 int resdatalen;
4583
4584 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4585 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4586 return -EIO;
c3ab96f3 4587
c3ab96f3
FB		 4588 priv = (struct qeth_qoat_priv *)reply->param;
4589 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4590 resdata = (char *)data + 28;
4591
4b7ae122
JW		 4592 if (resdatalen > (priv->buffer_len - priv->response_len))
4593 return -ENOSPC;
c3ab96f3
FB		 4594
4595 memcpy((priv->buffer + priv->response_len), resdata,
4596 resdatalen);
4597 priv->response_len += resdatalen;
4598
4599 if (cmd->data.setadapterparms.hdr.seq_no <
4600 cmd->data.setadapterparms.hdr.used_total)
4601 return 1;
4602 return 0;
4603}
4604
942d6984 4605static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4606{
4607 int rc = 0;
4608 struct qeth_cmd_buffer *iob;
4609 struct qeth_ipa_cmd *cmd;
4610 struct qeth_query_oat *oat_req;
4611 struct qeth_query_oat_data oat_data;
4612 struct qeth_qoat_priv priv;
4613 void __user *tmp;
4614
4615 QETH_CARD_TEXT(card, 3, "qoatcmd");
4616
4617 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4618 rc = -EOPNOTSUPP;
4619 goto out;
4620 }
4621
4622 if (copy_from_user(&oat_data, udata,
4623 sizeof(struct qeth_query_oat_data))) {
4624 rc = -EFAULT;
4625 goto out;
4626 }
4627
4628 priv.buffer_len = oat_data.buffer_len;
4629 priv.response_len = 0;
aec45e85 4630 priv.buffer = vzalloc(oat_data.buffer_len);
c3ab96f3
FB		 4631 if (!priv.buffer) {
4632 rc = -ENOMEM;
4633 goto out;
4634 }
4635
4636 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4637 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4638 if (!iob) {
4639 rc = -ENOMEM;
4640 goto out_free;
4641 }
ff5caa7a 4642 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4643 oat_req = &cmd->data.setadapterparms.data.query_oat;
4644 oat_req->subcmd_code = oat_data.command;
4645
4646 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4647 &priv);
4648 if (!rc) {
4649 if (is_compat_task())
4650 tmp = compat_ptr(oat_data.ptr);
4651 else
4652 tmp = (void __user *)(unsigned long)oat_data.ptr;
4653
4654 if (copy_to_user(tmp, priv.buffer,
4655 priv.response_len)) {
4656 rc = -EFAULT;
4657 goto out_free;
4658 }
4659
4660 oat_data.response_len = priv.response_len;
4661
4662 if (copy_to_user(udata, &oat_data,
4663 sizeof(struct qeth_query_oat_data)))
4664 rc = -EFAULT;
4b7ae122 4665 }
c3ab96f3
FB		 4666
4667out_free:
aec45e85 4668 vfree(priv.buffer);
c3ab96f3
FB		 4669out:
4670 return rc;
4671}
c3ab96f3 4672
e71e4072
HC		 4673static int qeth_query_card_info_cb(struct qeth_card *card,
4674 struct qeth_reply *reply, unsigned long data)
02d5cb5b 4675{
686c97ee
JW		 4676 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4677 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
02d5cb5b 4678 struct qeth_query_card_info *card_info;
02d5cb5b
EC		 4679
4680 QETH_CARD_TEXT(card, 2, "qcrdincb");
686c97ee 4681 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 4682 return -EIO;
02d5cb5b 4683
686c97ee
JW		 4684 card_info = &cmd->data.setadapterparms.data.card_info;
4685 carrier_info->card_type = card_info->card_type;
4686 carrier_info->port_mode = card_info->port_mode;
4687 carrier_info->port_speed = card_info->port_speed;
02d5cb5b
EC		 4688 return 0;
4689}
4690
d896ac62
JW		 4691int qeth_query_card_info(struct qeth_card *card,
4692 struct carrier_info *carrier_info)
02d5cb5b
EC		 4693{
4694 struct qeth_cmd_buffer *iob;
4695
4696 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4697 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4698 return -EOPNOTSUPP;
b9150461 4699 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
1aec42bc
TR		 4700 if (!iob)
4701 return -ENOMEM;
02d5cb5b
EC		 4702 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4703 (void *)carrier_info);
4704}
02d5cb5b 4705
ec61bd2f
JW		 4706/**
4707 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4708 * @card: pointer to a qeth_card
4709 *
4710 * Returns
4711 * 0, if a MAC address has been set for the card's netdevice
4712 * a return code, for various error conditions
4713 */
4714int qeth_vm_request_mac(struct qeth_card *card)
4715{
4716 struct diag26c_mac_resp *response;
4717 struct diag26c_mac_req *request;
4718 struct ccw_dev_id id;
4719 int rc;
4720
57a688aa 4721 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 4722
ec61bd2f
JW		 4723 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4724 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4725 if (!request || !response) {
4726 rc = -ENOMEM;
4727 goto out;
4728 }
4729
46646105 4730 ccw_device_get_id(CARD_DDEV(card), &id);
ec61bd2f
JW		 4731 request->resp_buf_len = sizeof(*response);
4732 request->resp_version = DIAG26C_VERSION2;
4733 request->op_code = DIAG26C_GET_MAC;
4734 request->devno = id.devno;
4735
615dff22 4736 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 4737 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 4738 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 4739 if (rc)
4740 goto out;
615dff22 4741 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 4742
4743 if (request->resp_buf_len < sizeof(*response) ||
4744 response->version != request->resp_version) {
4745 rc = -EIO;
57a688aa
JW		 4746 QETH_CARD_TEXT(card, 2, "badresp");
4747 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4748 sizeof(request->resp_buf_len));
ec61bd2f
JW		 4749 } else if (!is_valid_ether_addr(response->mac)) {
4750 rc = -EINVAL;
57a688aa
JW		 4751 QETH_CARD_TEXT(card, 2, "badmac");
4752 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f
JW		 4753 } else {
4754 ether_addr_copy(card->dev->dev_addr, response->mac);
4755 }
4756
4757out:
4758 kfree(response);
4759 kfree(request);
4760 return rc;
4761}
4762EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4763
d0ff1f52
UB		 4764static void qeth_determine_capabilities(struct qeth_card *card)
4765{
f9e50b02
JW		 4766 struct qeth_channel *channel = &card->data;
4767 struct ccw_device *ddev = channel->ccwdev;
d0ff1f52 4768 int rc;
d0ff1f52
UB		 4769 int ddev_offline = 0;
4770
57a688aa 4771 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 4772 if (!ddev->online) {
4773 ddev_offline = 1;
871602b1 4774 rc = qeth_start_channel(channel);
d0ff1f52 4775 if (rc) {
57a688aa 4776 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 4777 goto out;
4778 }
4779 }
4780
2066e1db 4781 rc = qeth_read_conf_data(card);
d0ff1f52 4782 if (rc) {
e19e5be8
JW		 4783 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4784 CARD_DEVID(card), rc);
57a688aa 4785 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 4786 goto out_offline;
4787 }
d0ff1f52
UB		 4788
4789 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4790 if (rc)
57a688aa 4791 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 4792
57a688aa
JW		 4793 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4794 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4795 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4796 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4797 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 4798 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4799 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4800 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4801 dev_info(&card->gdev->dev,
4802 "Completion Queueing supported\n");
4803 } else {
4804 card->options.cq = QETH_CQ_NOTAVAILABLE;
4805 }
4806
4807
d0ff1f52
UB		 4808out_offline:
4809 if (ddev_offline == 1)
f9e50b02 4810 qeth_stop_channel(channel);
d0ff1f52
UB		 4811out:
4812 return;
4813}
4814
4a71df50
FB		 4815static int qeth_qdio_establish(struct qeth_card *card)
4816{
d8564e19
JW		 4817 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
4818 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
4a71df50
FB		 4819 struct qdio_initialize init_data;
4820 char *qib_param_field;
d8564e19 4821 unsigned int i;
4a71df50
FB		 4822 int rc = 0;
4823
57a688aa 4824 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 4825
c593642c 4826 qib_param_field = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
104ea556 4827 if (!qib_param_field) {
4828 rc = -ENOMEM;
4829 goto out_free_nothing;
4830 }
4a71df50
FB		 4831
4832 qeth_create_qib_param_field(card, qib_param_field);
4833 qeth_create_qib_param_field_blkt(card, qib_param_field);
4834
d8564e19
JW		 4835 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
4836 if (card->options.cq == QETH_CQ_ENABLED)
4837 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
e9091ffd 4838
d8564e19
JW		 4839 for (i = 0; i < card->qdio.no_out_queues; i++)
4840 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
4a71df50
FB		 4841
4842 memset(&init_data, 0, sizeof(struct qdio_initialize));
379ac99e
JW		 4843 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4844 QDIO_QETH_QFMT;
4a71df50
FB		 4845 init_data.qib_param_field_format = 0;
4846 init_data.qib_param_field = qib_param_field;
0da9581d 4847 init_data.no_input_qs = card->qdio.no_in_queues;
4a71df50 4848 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 4849 init_data.input_handler = qeth_qdio_input_handler;
4850 init_data.output_handler = qeth_qdio_output_handler;
0a6e6345 4851 init_data.irq_poll = qeth_qdio_poll;
4a71df50 4852 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 4853 init_data.input_sbal_addr_array = in_sbal_ptrs;
4854 init_data.output_sbal_addr_array = out_sbal_ptrs;
0da9581d 4855 init_data.output_sbal_state_array = card->qdio.out_bufstates;
e53edf74 4856 init_data.scan_threshold = IS_IQD(card) ? 0 : 32;
4a71df50
FB		 4857
4858 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4859 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3db1db93
JW		 4860 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
4861 init_data.no_output_qs);
cc961d40
JG		 4862 if (rc) {
4863 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4864 goto out;
4865 }
1da1092d 4866 rc = qdio_establish(CARD_DDEV(card), &init_data);
cc961d40 4867 if (rc) {
4a71df50 4868 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 4869 qdio_free(CARD_DDEV(card));
4870 }
4a71df50 4871 }
0da9581d
EL		 4872
4873 switch (card->options.cq) {
4874 case QETH_CQ_ENABLED:
4875 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4876 break;
4877 case QETH_CQ_DISABLED:
4878 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4879 break;
4880 default:
4881 break;
4882 }
cc961d40 4883out:
4a71df50 4884 kfree(qib_param_field);
104ea556 4885out_free_nothing:
4a71df50
FB		 4886 return rc;
4887}
4888
4889static void qeth_core_free_card(struct qeth_card *card)
4890{
57a688aa 4891 QETH_CARD_TEXT(card, 2, "freecrd");
c3b2218d 4892 qeth_put_cmd(card->read_cmd);
c0a2e4d1 4893 destroy_workqueue(card->event_wq);
6bcac508 4894 unregister_service_level(&card->qeth_service_level);
a2eb0ad5 4895 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 4896 kfree(card);
4897}
4898
395672e0
SR		 4899void qeth_trace_features(struct qeth_card *card)
4900{
4901 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 4902 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4903 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4904 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4905 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4906 sizeof(card->info.diagass_support));
395672e0
SR		 4907}
4908EXPORT_SYMBOL_GPL(qeth_trace_features);
4909
4a71df50 4910static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 4911 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4912 .driver_info = QETH_CARD_TYPE_OSD},
4913 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4914 .driver_info = QETH_CARD_TYPE_IQD},
4e2b5aa5 4915#ifdef CONFIG_QETH_OSN
5113fec0
UB		 4916 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4917 .driver_info = QETH_CARD_TYPE_OSN},
4e2b5aa5 4918#endif
5113fec0
UB		 4919 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4920 .driver_info = QETH_CARD_TYPE_OSM},
4e2b5aa5 4921#ifdef CONFIG_QETH_OSX
5113fec0
UB		 4922 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4923 .driver_info = QETH_CARD_TYPE_OSX},
4e2b5aa5 4924#endif
4a71df50
FB		 4925 {},
4926};
4927MODULE_DEVICE_TABLE(ccw, qeth_ids);
4928
4929static struct ccw_driver qeth_ccw_driver = {
3bda058b 4930 .driver = {
3e70b3b8 4931 .owner = THIS_MODULE,
3bda058b
SO		 4932 .name = "qeth",
4933 },
4a71df50
FB		 4934 .ids = qeth_ids,
4935 .probe = ccwgroup_probe_ccwdev,
4936 .remove = ccwgroup_remove_ccwdev,
4937};
4938
9fae5c3b 4939int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 4940{
6ebb7f8d 4941 int retries = 3;
4a71df50
FB		 4942 int rc;
4943
57a688aa 4944 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 4945 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 4946 rc = qeth_update_from_chp_desc(card);
4947 if (rc)
4948 return rc;
4a71df50 4949retry:
6ebb7f8d 4950 if (retries < 3)
e19e5be8
JW		 4951 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4952 CARD_DEVID(card));
379ac99e 4953 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
f9e50b02
JW		 4954 qeth_stop_channel(&card->data);
4955 qeth_stop_channel(&card->write);
4956 qeth_stop_channel(&card->read);
22ae2790 4957 qdio_free(CARD_DDEV(card));
871602b1
JW		 4958
4959 rc = qeth_start_channel(&card->read);
aa909224
UB		 4960 if (rc)
4961 goto retriable;
871602b1 4962 rc = qeth_start_channel(&card->write);
aa909224
UB		 4963 if (rc)
4964 goto retriable;
871602b1 4965 rc = qeth_start_channel(&card->data);
aa909224
UB		 4966 if (rc)
4967 goto retriable;
aa909224 4968retriable:
4a71df50 4969 if (rc == -ERESTARTSYS) {
57a688aa 4970 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 4971 return rc;
4972 } else if (rc) {
57a688aa 4973 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 4974 if (--retries < 0)
4a71df50
FB		 4975 goto out;
4976 else
4977 goto retry;
4978 }
7f23d55f 4979
d0ff1f52 4980 qeth_determine_capabilities(card);
7f23d55f 4981 qeth_idx_init(card);
2e873d10
JW		 4982
4983 rc = qeth_idx_activate_read_channel(card);
4984 if (rc == -EINTR) {
57a688aa 4985 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 4986 return rc;
4987 } else if (rc) {
57a688aa 4988 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 4989 if (--retries < 0)
4990 goto out;
4991 else
4992 goto retry;
4993 }
2e873d10
JW		 4994
4995 rc = qeth_idx_activate_write_channel(card);
4996 if (rc == -EINTR) {
57a688aa 4997 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 4998 return rc;
4999 } else if (rc) {
57a688aa 5000 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5001 if (--retries < 0)
5002 goto out;
5003 else
5004 goto retry;
5005 }
908abbb5 5006 card->read_or_write_problem = 0;
4a71df50
FB		 5007 rc = qeth_mpc_initialize(card);
5008 if (rc) {
57a688aa 5009 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5010 goto out;
5011 }
1da74b1c 5012
10340510
JW		 5013 rc = qeth_send_startlan(card);
5014 if (rc) {
57a688aa 5015 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5016 if (rc == -ENETDOWN) {
5017 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5018 *carrier_ok = false;
10340510 5019 } else {
10340510
JW		 5020 goto out;
5021 }
91cc98f5 5022 } else {
9fae5c3b
JW		 5023 *carrier_ok = true;
5024 }
5025
52f82bf1
JW		 5026 card->options.ipa4.supported = 0;
5027 card->options.ipa6.supported = 0;
5028 card->options.adp.supported = 0;
b4d72c08 5029 card->options.sbp.supported_funcs = 0;
1da74b1c 5030 card->info.diagass_support = 0;
1aec42bc
TR		 5031 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5032 if (rc == -ENOMEM)
5033 goto out;
ee75fb86
KM		 5034 if (qeth_is_supported(card, IPA_IPV6)) {
5035 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5036 if (rc == -ENOMEM)
5037 goto out;
5038 }
1aec42bc
TR		 5039 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5040 rc = qeth_query_setadapterparms(card);
5041 if (rc < 0) {
57a688aa 5042 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5043 goto out;
5044 }
5045 }
5046 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5047 rc = qeth_query_setdiagass(card);
0b698c83 5048 if (rc)
57a688aa 5049 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc 5050 }
9897d583
JW		 5051
5052 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5053 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5054 card->info.hwtrap = 0;
5055
5056 rc = qeth_set_access_ctrl_online(card, 0);
5057 if (rc)
5058 goto out;
5059
aa3ad392
JW		 5060 rc = qeth_init_qdio_queues(card);
5061 if (rc) {
5062 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5063 goto out;
5064 }
5065
4a71df50
FB		 5066 return 0;
5067out:
74eacdb9
FB		 5068 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5069 "an error on the device\n");
e19e5be8
JW		 5070 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5071 CARD_DEVID(card), rc);
4a71df50
FB		 5072 return rc;
5073}
5074EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5075
91003f35
JW		 5076static int qeth_set_online(struct qeth_card *card)
5077{
5078 int rc;
5079
5080 mutex_lock(&card->discipline_mutex);
5081 mutex_lock(&card->conf_mutex);
5082 QETH_CARD_TEXT(card, 2, "setonlin");
5083
5084 rc = card->discipline->set_online(card);
5085
5086 mutex_unlock(&card->conf_mutex);
5087 mutex_unlock(&card->discipline_mutex);
5088
5089 return rc;
5090}
5091
5092int qeth_set_offline(struct qeth_card *card, bool resetting)
5093{
5094 int rc, rc2, rc3;
5095
5096 mutex_lock(&card->discipline_mutex);
5097 mutex_lock(&card->conf_mutex);
5098 QETH_CARD_TEXT(card, 3, "setoffl");
5099
5100 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5101 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5102 card->info.hwtrap = 1;
5103 }
5104
5105 rtnl_lock();
5106 card->info.open_when_online = card->dev->flags & IFF_UP;
5107 dev_close(card->dev);
5108 netif_device_detach(card->dev);
5109 netif_carrier_off(card->dev);
5110 rtnl_unlock();
5111
5112 card->discipline->set_offline(card);
5113
5114 rc = qeth_stop_channel(&card->data);
5115 rc2 = qeth_stop_channel(&card->write);
5116 rc3 = qeth_stop_channel(&card->read);
5117 if (!rc)
5118 rc = (rc2) ? rc2 : rc3;
5119 if (rc)
5120 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5121 qdio_free(CARD_DDEV(card));
5122
5123 /* let user_space know that device is offline */
5124 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5125
5126 mutex_unlock(&card->conf_mutex);
5127 mutex_unlock(&card->discipline_mutex);
5128 return 0;
5129}
5130EXPORT_SYMBOL_GPL(qeth_set_offline);
5131
5132static int qeth_do_reset(void *data)
5133{
5134 struct qeth_card *card = data;
5135 int rc;
5136
5137 QETH_CARD_TEXT(card, 2, "recover1");
5138 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5139 return 0;
5140 QETH_CARD_TEXT(card, 2, "recover2");
5141 dev_warn(&card->gdev->dev,
5142 "A recovery process has been started for the device\n");
5143
5144 qeth_set_offline(card, true);
5145 rc = qeth_set_online(card);
5146 if (!rc) {
5147 dev_info(&card->gdev->dev,
5148 "Device successfully recovered!\n");
5149 } else {
5150 ccwgroup_set_offline(card->gdev);
5151 dev_warn(&card->gdev->dev,
5152 "The qeth device driver failed to recover an error on the device\n");
5153 }
5154 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5155 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5156 return 0;
5157}
5158
c04b116a
JW		 5159#if IS_ENABLED(CONFIG_QETH_L3)
5160static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5161 struct qeth_hdr *hdr)
5162{
5163 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5164 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5165 struct net_device *dev = skb->dev;
5166
5167 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5168 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5169 "FAKELL", skb->len);
5170 return;
5171 }
5172
5173 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5174 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5175 ETH_P_IP;
5176 unsigned char tg_addr[ETH_ALEN];
5177
5178 skb_reset_network_header(skb);
5179 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5180 case QETH_CAST_MULTICAST:
5181 if (prot == ETH_P_IP)
5182 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5183 else
5184 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5185 QETH_CARD_STAT_INC(card, rx_multicast);
5186 break;
5187 case QETH_CAST_BROADCAST:
5188 ether_addr_copy(tg_addr, dev->broadcast);
5189 QETH_CARD_STAT_INC(card, rx_multicast);
5190 break;
5191 default:
5192 if (card->options.sniffer)
5193 skb->pkt_type = PACKET_OTHERHOST;
5194 ether_addr_copy(tg_addr, dev->dev_addr);
5195 }
5196
5197 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5198 dev_hard_header(skb, dev, prot, tg_addr,
5199 &l3_hdr->next_hop.rx.src_mac, skb->len);
5200 else
5201 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5202 skb->len);
5203 }
5204
5205 /* copy VLAN tag from hdr into skb */
5206 if (!card->options.sniffer &&
5207 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5208 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5209 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5210 l3_hdr->vlan_id :
5211 l3_hdr->next_hop.rx.vlan_id;
5212
5213 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5214 }
5215}
5216#endif
5217
5218static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
dcdcf867 5219 struct qeth_hdr *hdr, bool uses_frags)
c04b116a 5220{
dcdcf867 5221 struct napi_struct *napi = &card->napi;
c04b116a
JW		 5222 bool is_cso;
5223
5224 switch (hdr->hdr.l2.id) {
5225 case QETH_HEADER_TYPE_OSN:
5226 skb_push(skb, sizeof(*hdr));
5227 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
5228 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5229 QETH_CARD_STAT_INC(card, rx_packets);
5230
5231 card->osn_info.data_cb(skb);
5232 return;
5233#if IS_ENABLED(CONFIG_QETH_L3)
5234 case QETH_HEADER_TYPE_LAYER3:
5235 qeth_l3_rebuild_skb(card, skb, hdr);
5236 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5237 break;
5238#endif
5239 case QETH_HEADER_TYPE_LAYER2:
5240 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5241 break;
5242 default:
5243 /* never happens */
dcdcf867
JW		 5244 if (uses_frags)
5245 napi_free_frags(napi);
5246 else
5247 dev_kfree_skb_any(skb);
c04b116a
JW		 5248 return;
5249 }
5250
5251 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5252 skb->ip_summed = CHECKSUM_UNNECESSARY;
5253 QETH_CARD_STAT_INC(card, rx_skb_csum);
5254 } else {
5255 skb->ip_summed = CHECKSUM_NONE;
5256 }
5257
c04b116a
JW		 5258 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5259 QETH_CARD_STAT_INC(card, rx_packets);
5260 if (skb_is_nonlinear(skb)) {
5261 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5262 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5263 skb_shinfo(skb)->nr_frags);
5264 }
5265
dcdcf867
JW		 5266 if (uses_frags) {
5267 napi_gro_frags(napi);
5268 } else {
5269 skb->protocol = eth_type_trans(skb, skb->dev);
5270 napi_gro_receive(napi, skb);
5271 }
c04b116a
JW		 5272}
5273
f677fcb9 5274static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
4a71df50 5275{
f677fcb9 5276 struct page *page = virt_to_page(data);
b6f72f96 5277 unsigned int next_frag;
b3332930 5278
8d68af6a 5279 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5280 get_page(page);
f677fcb9
JW		 5281 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5282 data_len);
4a71df50
FB		 5283}
5284
bca51650
TR		 5285static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5286{
5287 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5288}
5289
c04b116a 5290static int qeth_extract_skb(struct qeth_card *card,
ed13615d 5291 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
c04b116a 5292 int *__offset)
4a71df50 5293{
562cf773 5294 struct qeth_priv *priv = netdev_priv(card->dev);
b3332930 5295 struct qdio_buffer *buffer = qethbuffer->buffer;
dcdcf867 5296 struct napi_struct *napi = &card->napi;
ed13615d 5297 struct qdio_buffer_element *element;
f677fcb9 5298 unsigned int linear_len = 0;
dcdcf867 5299 bool uses_frags = false;
4a71df50 5300 int offset = *__offset;
17caeaa4 5301 bool use_rx_sg = false;
f677fcb9 5302 unsigned int headroom;
c04b116a 5303 struct qeth_hdr *hdr;
8d68af6a 5304 struct sk_buff *skb;
76b11f8e 5305 int skb_len = 0;
4a71df50 5306
ed13615d
JW		 5307 element = &buffer->element[*element_no];
5308
7d4faee7 5309next_packet:
4a71df50 5310 /* qeth_hdr must not cross element boundaries */
864c17c3 5311 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50 5312 if (qeth_is_last_sbale(element))
c04b116a 5313 return -ENODATA;
4a71df50
FB		 5314 element++;
5315 offset = 0;
4a71df50 5316 }
4a71df50 5317
2db01da8 5318 hdr = phys_to_virt(element->addr) + offset;
c04b116a 5319 offset += sizeof(*hdr);
5b55633f
JW		 5320 skb = NULL;
5321
c04b116a 5322 switch (hdr->hdr.l2.id) {
76b11f8e 5323 case QETH_HEADER_TYPE_LAYER2:
c04b116a 5324 skb_len = hdr->hdr.l2.pkt_length;
5b55633f 5325 linear_len = ETH_HLEN;
17caeaa4 5326 headroom = 0;
76b11f8e
UB		 5327 break;
5328 case QETH_HEADER_TYPE_LAYER3:
c04b116a 5329 skb_len = hdr->hdr.l3.length;
7d4faee7
JW		 5330 if (!IS_LAYER3(card)) {
5331 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5332 goto walk_packet;
5333 }
5334
c04b116a 5335 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5b55633f
JW		 5336 linear_len = ETH_HLEN;
5337 headroom = 0;
5338 break;
5339 }
5340
c04b116a 5341 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5b55633f
JW		 5342 linear_len = sizeof(struct ipv6hdr);
5343 else
5344 linear_len = sizeof(struct iphdr);
1abd2296 5345 headroom = ETH_HLEN;
76b11f8e
UB		 5346 break;
5347 case QETH_HEADER_TYPE_OSN:
c04b116a 5348 skb_len = hdr->hdr.osn.pdu_length;
7d4faee7
JW		 5349 if (!IS_OSN(card)) {
5350 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5351 goto walk_packet;
5352 }
5353
5b55633f 5354 linear_len = skb_len;
76b11f8e
UB		 5355 headroom = sizeof(struct qeth_hdr);
5356 break;
5357 default:
c04b116a 5358 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5fd3fcbb
JW		 5359 QETH_CARD_STAT_INC(card, rx_frame_errors);
5360 else
5361 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5362
7d4faee7 5363 /* Can't determine packet length, drop the whole buffer. */
c04b116a 5364 return -EPROTONOSUPPORT;
4a71df50
FB		 5365 }
5366
5b55633f
JW		 5367 if (skb_len < linear_len) {
5368 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5369 goto walk_packet;
5370 }
4a71df50 5371
17caeaa4 5372 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
562cf773 5373 (skb_len > READ_ONCE(priv->rx_copybreak) &&
17caeaa4
JW		 5374 !atomic_read(&card->force_alloc_skb) &&
5375 !IS_OSN(card));
8d68af6a 5376
dcdcf867 5377 if (use_rx_sg) {
8d68af6a 5378 /* QETH_CQ_ENABLED only: */
8ca8559f
JW		 5379 if (qethbuffer->rx_skb &&
5380 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
dcdcf867
JW		 5381 skb = qethbuffer->rx_skb;
5382 qethbuffer->rx_skb = NULL;
5383 goto use_skb;
5384 }
5385
5386 skb = napi_get_frags(napi);
5387 if (!skb) {
5388 /* -ENOMEM, no point in falling back further. */
5389 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5390 goto walk_packet;
5391 }
5392
5393 if (skb_tailroom(skb) >= linear_len + headroom) {
5394 uses_frags = true;
5395 goto use_skb;
5396 }
5397
5398 netdev_info_once(card->dev,
5399 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5400 linear_len + headroom, skb_tailroom(skb));
5401 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
4a71df50 5402 }
17caeaa4 5403
dcdcf867
JW		 5404 linear_len = skb_len;
5405 skb = napi_alloc_skb(napi, linear_len + headroom);
5406 if (!skb) {
17caeaa4 5407 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
dcdcf867
JW		 5408 goto walk_packet;
5409 }
4a71df50 5410
dcdcf867
JW		 5411use_skb:
5412 if (headroom)
5413 skb_reserve(skb, headroom);
7d4faee7 5414walk_packet:
4a71df50 5415 while (skb_len) {
f677fcb9 5416 int data_len = min(skb_len, (int)(element->length - offset));
2db01da8 5417 char *data = phys_to_virt(element->addr) + offset;
f677fcb9
JW		 5418
5419 skb_len -= data_len;
5420 offset += data_len;
7d4faee7 5421
f677fcb9 5422 /* Extract data from current element: */
7d4faee7 5423 if (skb && data_len) {
f677fcb9
JW		 5424 if (linear_len) {
5425 unsigned int copy_len;
5426
5427 copy_len = min_t(unsigned int, linear_len,
5428 data_len);
5429
5430 skb_put_data(skb, data, copy_len);
5431 linear_len -= copy_len;
5432 data_len -= copy_len;
5433 data += copy_len;
5434 }
5435
5436 if (data_len)
5437 qeth_create_skb_frag(skb, data, data_len);
4a71df50 5438 }
f677fcb9
JW		 5439
5440 /* Step forward to next element: */
4a71df50
FB		 5441 if (skb_len) {
5442 if (qeth_is_last_sbale(element)) {
847a50fd 5443 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5444 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7 5445 if (skb) {
dcdcf867
JW		 5446 if (uses_frags)
5447 napi_free_frags(napi);
5448 else
5449 dev_kfree_skb_any(skb);
7d4faee7
JW		 5450 QETH_CARD_STAT_INC(card,
5451 rx_length_errors);
5452 }
c04b116a 5453 return -EMSGSIZE;
4a71df50
FB		 5454 }
5455 element++;
5456 offset = 0;
4a71df50
FB		 5457 }
5458 }
7d4faee7
JW		 5459
5460 /* This packet was skipped, go get another one: */
5461 if (!skb)
5462 goto next_packet;
5463
ed13615d 5464 *element_no = element - &buffer->element[0];
4a71df50 5465 *__offset = offset;
c04b116a 5466
dcdcf867 5467 qeth_receive_skb(card, skb, hdr, uses_frags);
c04b116a
JW		 5468 return 0;
5469}
5470
781b9a18
JW		 5471static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5472 struct qeth_qdio_buffer *buf, bool *done)
c04b116a 5473{
781b9a18 5474 unsigned int work_done = 0;
c04b116a
JW		 5475
5476 while (budget) {
ed13615d 5477 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
c04b116a
JW		 5478 &card->rx.e_offset)) {
5479 *done = true;
5480 break;
5481 }
5482
5483 work_done++;
5484 budget--;
4a71df50 5485 }
c04b116a
JW		 5486
5487 return work_done;
4a71df50 5488}
4a71df50 5489
781b9a18 5490static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
d73ef324 5491{
781b9a18 5492 unsigned int work_done = 0;
d73ef324 5493
781b9a18 5494 while (budget > 0) {
b439044b
JW		 5495 struct qeth_qdio_buffer *buffer;
5496 unsigned int skbs_done = 0;
5497 bool done = false;
5498
781b9a18 5499 /* Fetch completed RX buffers: */
d73ef324
JW		 5500 if (!card->rx.b_count) {
5501 card->rx.qdio_err = 0;
5502 card->rx.b_count = qdio_get_next_buffers(
5503 card->data.ccwdev, 0, &card->rx.b_index,
5504 &card->rx.qdio_err);
5505 if (card->rx.b_count <= 0) {
5506 card->rx.b_count = 0;
5507 break;
5508 }
d73ef324
JW		 5509 }
5510
781b9a18 5511 /* Process one completed RX buffer: */
b439044b
JW		 5512 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5513 if (!(card->rx.qdio_err &&
5514 qeth_check_qdio_errors(card, buffer->buffer,
5515 card->rx.qdio_err, "qinerr")))
5516 skbs_done = qeth_extract_skbs(card, budget, buffer,
5517 &done);
5518 else
5519 done = true;
5520
5521 work_done += skbs_done;
5522 budget -= skbs_done;
5523
5524 if (done) {
5525 QETH_CARD_STAT_INC(card, rx_bufs);
5526 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5527 qeth_queue_input_buffer(card, card->rx.b_index);
5528 card->rx.b_count--;
5529
5530 /* Step forward to next buffer: */
5531 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5532 card->rx.buf_element = 0;
5533 card->rx.e_offset = 0;
d73ef324
JW		 5534 }
5535 }
5536
781b9a18
JW		 5537 return work_done;
5538}
5539
0a6e6345
JW		 5540static void qeth_cq_poll(struct qeth_card *card)
5541{
5542 unsigned int work_done = 0;
5543
5544 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5545 unsigned int start, error;
5546 int completed;
5547
5548 completed = qdio_inspect_queue(CARD_DDEV(card), 1, true, &start,
5549 &error);
5550 if (completed <= 0)
5551 return;
5552
5553 qeth_qdio_cq_handler(card, error, 1, start, completed);
5554 work_done += completed;
5555 }
5556}
5557
781b9a18
JW		 5558int qeth_poll(struct napi_struct *napi, int budget)
5559{
5560 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5561 unsigned int work_done;
5562
5563 work_done = qeth_rx_poll(card, budget);
5564
0a6e6345
JW		 5565 if (card->options.cq == QETH_CQ_ENABLED)
5566 qeth_cq_poll(card);
5567
781b9a18
JW		 5568 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5569 if (budget && work_done >= budget)
5570 return work_done;
5571
f9ce416a 5572 if (napi_complete_done(napi, work_done) &&
0a6e6345 5573 qdio_start_irq(CARD_DDEV(card)))
f9ce416a 5574 napi_schedule(napi);
781b9a18 5575
d73ef324
JW		 5576 return work_done;
5577}
5578EXPORT_SYMBOL_GPL(qeth_poll);
5579
e53edf74 5580static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
85e537d8 5581 unsigned int bidx, bool error, int budget)
e53edf74
JW		 5582{
5583 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5584 u8 sflags = buffer->buffer->element[15].sflags;
5585 struct qeth_card *card = queue->card;
5586
5587 if (queue->bufstates && (queue->bufstates[bidx].flags &
5588 QDIO_OUTBUF_STATE_FLAG_PENDING)) {
5589 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
5590
5591 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
5592 QETH_QDIO_BUF_PENDING) ==
5593 QETH_QDIO_BUF_PRIMED)
5594 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5595
5596 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5597
5598 /* prepare the queue slot for re-use: */
5599 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5600 if (qeth_init_qdio_out_buf(queue, bidx)) {
5601 QETH_CARD_TEXT(card, 2, "outofbuf");
5602 qeth_schedule_recovery(card);
5603 }
5604
5605 return;
5606 }
5607
5608 if (card->options.cq == QETH_CQ_ENABLED)
5609 qeth_notify_skbs(queue, buffer,
5610 qeth_compute_cq_notification(sflags, 0));
85e537d8 5611 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 5612}
5613
5614static int qeth_tx_poll(struct napi_struct *napi, int budget)
5615{
5616 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5617 unsigned int queue_no = queue->queue_no;
5618 struct qeth_card *card = queue->card;
5619 struct net_device *dev = card->dev;
5620 unsigned int work_done = 0;
5621 struct netdev_queue *txq;
5622
5623 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5624
5625 while (1) {
5626 unsigned int start, error, i;
96bd6c94
JW		 5627 unsigned int packets = 0;
5628 unsigned int bytes = 0;
e53edf74
JW		 5629 int completed;
5630
5631 if (qeth_out_queue_is_empty(queue)) {
5632 napi_complete(napi);
5633 return 0;
5634 }
5635
5636 /* Give the CPU a breather: */
5637 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5638 QETH_TXQ_STAT_INC(queue, completion_yield);
5639 if (napi_complete_done(napi, 0))
5640 napi_schedule(napi);
5641 return 0;
5642 }
5643
5644 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
5645 &start, &error);
5646 if (completed <= 0) {
5647 /* Ensure we see TX completion for pending work: */
5648 if (napi_complete_done(napi, 0))
ee1e52d1 5649 qeth_tx_arm_timer(queue, QETH_TX_TIMER_USECS);
e53edf74
JW		 5650 return 0;
5651 }
5652
5653 for (i = start; i < start + completed; i++) {
96bd6c94 5654 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 5655 unsigned int bidx = QDIO_BUFNR(i);
5656
96bd6c94 5657 buffer = queue->bufs[bidx];
1ab2f8c6 5658 packets += buffer->frames;
96bd6c94
JW		 5659 bytes += buffer->bytes;
5660
5661 qeth_handle_send_error(card, buffer, error);
85e537d8 5662 qeth_iqd_tx_complete(queue, bidx, error, budget);
e53edf74
JW		 5663 qeth_cleanup_handled_pending(queue, bidx, false);
5664 }
5665
96bd6c94 5666 netdev_tx_completed_queue(txq, packets, bytes);
e53edf74
JW		 5667 atomic_sub(completed, &queue->used_buffers);
5668 work_done += completed;
5669
5670 /* xmit may have observed the full-condition, but not yet
5671 * stopped the txq. In which case the code below won't trigger.
5672 * So before returning, xmit will re-check the txq's fill level
5673 * and wake it up if needed.
5674 */
5675 if (netif_tx_queue_stopped(txq) &&
5676 !qeth_out_queue_is_full(queue))
5677 netif_tx_wake_queue(txq);
5678 }
5679}
5680
ad3cbf61
JW		 5681static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5682{
5683 if (!cmd->hdr.return_code)
5684 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5685 return cmd->hdr.return_code;
5686}
5687
4666d7fb
JW		 5688static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5689 struct qeth_reply *reply,
5690 unsigned long data)
5691{
5692 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5693 struct qeth_ipa_caps *caps = reply->param;
5694
5695 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 5696 return -EIO;
4666d7fb
JW		 5697
5698 caps->supported = cmd->data.setassparms.data.caps.supported;
5699 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5700 return 0;
5701}
5702
8f43fb00
TR		 5703int qeth_setassparms_cb(struct qeth_card *card,
5704 struct qeth_reply *reply, unsigned long data)
4d7def2a 5705{
742d4d40 5706 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 5707
5708 QETH_CARD_TEXT(card, 4, "defadpcb");
5709
742d4d40
JW		 5710 if (cmd->hdr.return_code)
5711 return -EIO;
5712
5713 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5714 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
52f82bf1 5715 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
742d4d40 5716 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
52f82bf1 5717 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
4d7def2a
TR		 5718 return 0;
5719}
8f43fb00 5720EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 5721
b475e316
TR		 5722struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5723 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 5724 u16 cmd_code,
5725 unsigned int data_length,
b475e316 5726 enum qeth_prot_versions prot)
4d7def2a 5727{
b9150461
JW		 5728 struct qeth_ipacmd_setassparms *setassparms;
5729 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 5730 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 5731
5732 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 5733 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5734 data_length +
5735 offsetof(struct qeth_ipacmd_setassparms,
5736 data));
5737 if (!iob)
5738 return NULL;
4d7def2a 5739
b9150461
JW		 5740 setassparms = &__ipa_cmd(iob)->data.setassparms;
5741 setassparms->assist_no = ipa_func;
4d7def2a 5742
b9150461
JW		 5743 hdr = &setassparms->hdr;
5744 hdr->length = sizeof(*hdr) + data_length;
5745 hdr->command_code = cmd_code;
4d7def2a
TR		 5746 return iob;
5747}
b475e316 5748EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 5749
a8155b00
KM		 5750int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5751 enum qeth_ipa_funcs ipa_func,
1c696c89 5752 u16 cmd_code, u32 *data,
a8155b00 5753 enum qeth_prot_versions prot)
4d7def2a 5754{
1c696c89 5755 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 5756 struct qeth_cmd_buffer *iob;
5757
a8155b00 5758 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 5759 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 5760 if (!iob)
5761 return -ENOMEM;
4fa55fa9 5762
1c696c89
JW		 5763 if (data)
5764 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 5765 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 5766}
a8155b00 5767EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 5768
4a71df50
FB		 5769static void qeth_unregister_dbf_views(void)
5770{
d11ba0c4
PT		 5771 int x;
5772 for (x = 0; x < QETH_DBF_INFOS; x++) {
5773 debug_unregister(qeth_dbf[x].id);
5774 qeth_dbf[x].id = NULL;
5775 }
4a71df50
FB		 5776}
5777
8e96c51c 5778void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 5779{
5780 char dbf_txt_buf[32];
345aa66e 5781 va_list args;
cd023216 5782
8e6a8285 5783 if (!debug_level_enabled(id, level))
cd023216 5784 return;
345aa66e
PT		 5785 va_start(args, fmt);
5786 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5787 va_end(args);
8e96c51c 5788 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 5789}
5790EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5791
4a71df50
FB		 5792static int qeth_register_dbf_views(void)
5793{
d11ba0c4
PT		 5794 int ret;
5795 int x;
5796
5797 for (x = 0; x < QETH_DBF_INFOS; x++) {
5798 /* register the areas */
5799 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5800 qeth_dbf[x].pages,
5801 qeth_dbf[x].areas,
5802 qeth_dbf[x].len);
5803 if (qeth_dbf[x].id == NULL) {
5804 qeth_unregister_dbf_views();
5805 return -ENOMEM;
5806 }
4a71df50 5807
d11ba0c4
PT		 5808 /* register a view */
5809 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5810 if (ret) {
5811 qeth_unregister_dbf_views();
5812 return ret;
5813 }
4a71df50 5814
d11ba0c4
PT		 5815 /* set a passing level */
5816 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5817 }
4a71df50
FB		 5818
5819 return 0;
5820}
5821
a70fee3b
JW		 5822static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
5823
4a71df50
FB		 5824int qeth_core_load_discipline(struct qeth_card *card,
5825 enum qeth_discipline_id discipline)
5826{
2022e00c 5827 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 5828 switch (discipline) {
5829 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 5830 card->discipline = try_then_request_module(
5831 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 5832 break;
5833 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 5834 card->discipline = try_then_request_module(
5835 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 5836 break;
c70eb09d
JW		 5837 default:
5838 break;
4a71df50 5839 }
a70fee3b 5840 mutex_unlock(&qeth_mod_mutex);
c70eb09d 5841
c041f2d4 5842 if (!card->discipline) {
74eacdb9
FB		 5843 dev_err(&card->gdev->dev, "There is no kernel module to "
5844 "support discipline %d\n", discipline);
a70fee3b 5845 return -EINVAL;
4a71df50 5846 }
a70fee3b 5847
c1a935f6 5848 card->options.layer = discipline;
a70fee3b 5849 return 0;
4a71df50
FB		 5850}
5851
5852void qeth_core_free_discipline(struct qeth_card *card)
5853{
4fda3354 5854 if (IS_LAYER2(card))
c041f2d4 5855 symbol_put(qeth_l2_discipline);
4a71df50 5856 else
c041f2d4 5857 symbol_put(qeth_l3_discipline);
c1a935f6 5858 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 5859 card->discipline = NULL;
4a71df50
FB		 5860}
5861
2d2ebb3e 5862const struct device_type qeth_generic_devtype = {
b7169c51
SO		 5863 .name = "qeth_generic",
5864 .groups = qeth_generic_attr_groups,
5865};
2d2ebb3e
JW		 5866EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5867
b7169c51
SO		 5868static const struct device_type qeth_osn_devtype = {
5869 .name = "qeth_osn",
5870 .groups = qeth_osn_attr_groups,
5871};
5872
819dc537
SR		 5873#define DBF_NAME_LEN 20
5874
5875struct qeth_dbf_entry {
5876 char dbf_name[DBF_NAME_LEN];
5877 debug_info_t *dbf_info;
5878 struct list_head dbf_list;
5879};
5880
5881static LIST_HEAD(qeth_dbf_list);
5882static DEFINE_MUTEX(qeth_dbf_list_mutex);
5883
5884static debug_info_t *qeth_get_dbf_entry(char *name)
5885{
5886 struct qeth_dbf_entry *entry;
5887 debug_info_t *rc = NULL;
5888
5889 mutex_lock(&qeth_dbf_list_mutex);
5890 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5891 if (strcmp(entry->dbf_name, name) == 0) {
5892 rc = entry->dbf_info;
5893 break;
5894 }
5895 }
5896 mutex_unlock(&qeth_dbf_list_mutex);
5897 return rc;
5898}
5899
5900static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5901{
5902 struct qeth_dbf_entry *new_entry;
5903
5904 card->debug = debug_register(name, 2, 1, 8);
5905 if (!card->debug) {
5906 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5907 goto err;
5908 }
5909 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5910 goto err_dbg;
5911 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5912 if (!new_entry)
5913 goto err_dbg;
5914 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5915 new_entry->dbf_info = card->debug;
5916 mutex_lock(&qeth_dbf_list_mutex);
5917 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5918 mutex_unlock(&qeth_dbf_list_mutex);
5919
5920 return 0;
5921
5922err_dbg:
5923 debug_unregister(card->debug);
5924err:
5925 return -ENOMEM;
5926}
5927
5928static void qeth_clear_dbf_list(void)
5929{
5930 struct qeth_dbf_entry *entry, *tmp;
5931
5932 mutex_lock(&qeth_dbf_list_mutex);
5933 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5934 list_del(&entry->dbf_list);
5935 debug_unregister(entry->dbf_info);
5936 kfree(entry);
5937 }
5938 mutex_unlock(&qeth_dbf_list_mutex);
5939}
5940
d3d1b205
JW		 5941static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5942{
5943 struct net_device *dev;
562cf773 5944 struct qeth_priv *priv;
d3d1b205
JW		 5945
5946 switch (card->info.type) {
5947 case QETH_CARD_TYPE_IQD:
562cf773 5948 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
d8564e19 5949 ether_setup, QETH_MAX_OUT_QUEUES, 1);
d3d1b205 5950 break;
73dc2daf 5951 case QETH_CARD_TYPE_OSM:
562cf773 5952 dev = alloc_etherdev(sizeof(*priv));
73dc2daf 5953 break;
d3d1b205 5954 case QETH_CARD_TYPE_OSN:
562cf773
JW		 5955 dev = alloc_netdev(sizeof(*priv), "osn%d", NET_NAME_UNKNOWN,
5956 ether_setup);
d3d1b205
JW		 5957 break;
5958 default:
d8564e19 5959 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
d3d1b205
JW		 5960 }
5961
5962 if (!dev)
5963 return NULL;
5964
562cf773
JW		 5965 priv = netdev_priv(dev);
5966 priv->rx_copybreak = QETH_RX_COPYBREAK;
5967
d3d1b205
JW		 5968 dev->ml_priv = card;
5969 dev->watchdog_timeo = QETH_TX_TIMEOUT;
72f219da 5970 dev->min_mtu = IS_OSN(card) ? 64 : 576;
8ce7a9e0
JW		 5971 /* initialized when device first goes online: */
5972 dev->max_mtu = 0;
5973 dev->mtu = 0;
d3d1b205
JW		 5974 SET_NETDEV_DEV(dev, &card->gdev->dev);
5975 netif_carrier_off(dev);
5f89eca5 5976
1c103cf8
JW		 5977 dev->ethtool_ops = IS_OSN(card) ? &qeth_osn_ethtool_ops :
5978 &qeth_ethtool_ops;
5f89eca5 5979
d3d1b205
JW		 5980 return dev;
5981}
5982
5983struct net_device *qeth_clone_netdev(struct net_device *orig)
5984{
5985 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5986
5987 if (!clone)
5988 return NULL;
5989
5990 clone->dev_port = orig->dev_port;
5991 return clone;
5992}
5993
1c103cf8
JW		 5994int qeth_setup_netdev(struct qeth_card *card)
5995{
5996 struct net_device *dev = card->dev;
5997 unsigned int num_tx_queues;
5998
5999 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6000 dev->hw_features |= NETIF_F_SG;
6001 dev->vlan_features |= NETIF_F_SG;
6002
6003 if (IS_IQD(card)) {
6004 dev->features |= NETIF_F_SG;
6005 num_tx_queues = QETH_IQD_MIN_TXQ;
6006 } else if (IS_VM_NIC(card)) {
6007 num_tx_queues = 1;
6008 } else {
6009 num_tx_queues = dev->real_num_tx_queues;
6010 }
6011
5d8ce41c 6012 return qeth_set_real_num_tx_queues(card, num_tx_queues);
1c103cf8
JW		 6013}
6014EXPORT_SYMBOL_GPL(qeth_setup_netdev);
6015
4a71df50
FB		 6016static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6017{
6018 struct qeth_card *card;
6019 struct device *dev;
6020 int rc;
c70eb09d 6021 enum qeth_discipline_id enforced_disc;
819dc537 6022 char dbf_name[DBF_NAME_LEN];
4a71df50 6023
d11ba0c4 6024 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 6025
6026 dev = &gdev->dev;
6027 if (!get_device(dev))
6028 return -ENODEV;
6029
2a0217d5 6030 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 6031
121ca39a 6032 card = qeth_alloc_card(gdev);
4a71df50 6033 if (!card) {
d11ba0c4 6034 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 6035 rc = -ENOMEM;
6036 goto err_dev;
6037 }
af039068
CO		 6038
6039 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6040 dev_name(&gdev->dev));
819dc537 6041 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 6042 if (!card->debug) {
819dc537
SR		 6043 rc = qeth_add_dbf_entry(card, dbf_name);
6044 if (rc)
6045 goto err_card;
af039068 6046 }
af039068 6047
95f4d8b7 6048 qeth_setup_card(card);
d3d1b205 6049 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 6050 if (!card->dev) {
6051 rc = -ENOMEM;
d3d1b205 6052 goto err_card;
778b1ac7 6053 }
d3d1b205 6054
1c103cf8
JW		 6055 qeth_determine_capabilities(card);
6056 qeth_set_blkt_defaults(card);
6057
73dc2daf
JW		 6058 card->qdio.no_out_queues = card->dev->num_tx_queues;
6059 rc = qeth_update_from_chp_desc(card);
6060 if (rc)
6061 goto err_chp_desc;
09ac887f 6062
c70eb09d
JW		 6063 enforced_disc = qeth_enforce_discipline(card);
6064 switch (enforced_disc) {
6065 case QETH_DISCIPLINE_UNDETERMINED:
6066 gdev->dev.type = &qeth_generic_devtype;
6067 break;
6068 default:
6069 card->info.layer_enforced = true;
6070 rc = qeth_core_load_discipline(card, enforced_disc);
5113fec0 6071 if (rc)
d3d1b205 6072 goto err_load;
2d2ebb3e 6073
379ac99e
JW		 6074 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
6075 card->discipline->devtype;
c041f2d4 6076 rc = card->discipline->setup(card->gdev);
4a71df50 6077 if (rc)
5113fec0 6078 goto err_disc;
2d2ebb3e 6079 break;
4a71df50
FB		 6080 }
6081
4a71df50
FB		 6082 return 0;
6083
5113fec0
UB		 6084err_disc:
6085 qeth_core_free_discipline(card);
d3d1b205 6086err_load:
a4cdc9ba 6087err_chp_desc:
73dc2daf 6088 free_netdev(card->dev);
4a71df50
FB		 6089err_card:
6090 qeth_core_free_card(card);
6091err_dev:
6092 put_device(dev);
6093 return rc;
6094}
6095
6096static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6097{
4a71df50
FB		 6098 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6099
57a688aa 6100 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 6101
c041f2d4
SO		 6102 if (card->discipline) {
6103 card->discipline->remove(gdev);
9dc48ccc
UB		 6104 qeth_core_free_discipline(card);
6105 }
6106
8311c7a2
JW		 6107 qeth_free_qdio_queues(card);
6108
d3d1b205 6109 free_netdev(card->dev);
4a71df50 6110 qeth_core_free_card(card);
4a71df50 6111 put_device(&gdev->dev);
4a71df50
FB		 6112}
6113
6114static int qeth_core_set_online(struct ccwgroup_device *gdev)
6115{
6116 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6117 int rc = 0;
c70eb09d 6118 enum qeth_discipline_id def_discipline;
4a71df50 6119
c041f2d4 6120 if (!card->discipline) {
379ac99e
JW		 6121 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6122 QETH_DISCIPLINE_LAYER2;
4a71df50
FB		 6123 rc = qeth_core_load_discipline(card, def_discipline);
6124 if (rc)
6125 goto err;
c041f2d4 6126 rc = card->discipline->setup(card->gdev);
9111e788
UB		 6127 if (rc) {
6128 qeth_core_free_discipline(card);
4a71df50 6129 goto err;
9111e788 6130 }
4a71df50 6131 }
91003f35
JW		 6132
6133 rc = qeth_set_online(card);
4a71df50
FB		 6134err:
6135 return rc;
6136}
6137
6138static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6139{
6140 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
91003f35
JW		 6141
6142 return qeth_set_offline(card, false);
4a71df50
FB		 6143}
6144
6145static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6146{
6147 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
96d1bb53
JW		 6148 qeth_set_allowed_threads(card, 0, 1);
6149 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6150 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6151 qeth_qdio_clear_card(card, 0);
41c47da3 6152 qeth_drain_output_queues(card);
96d1bb53 6153 qdio_free(CARD_DDEV(card));
4a71df50
FB		 6154}
6155
c4733c32 6156static int qeth_suspend(struct ccwgroup_device *gdev)
bbcfcdc8
FB		 6157{
6158 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
bbcfcdc8 6159
c4733c32
JW		 6160 qeth_set_allowed_threads(card, 0, 1);
6161 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
6162 if (gdev->state == CCWGROUP_OFFLINE)
6163 return 0;
6164
91003f35 6165 qeth_set_offline(card, false);
bbcfcdc8
FB		 6166 return 0;
6167}
6168
c4733c32 6169static int qeth_resume(struct ccwgroup_device *gdev)
bbcfcdc8
FB		 6170{
6171 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
c4733c32
JW		 6172 int rc;
6173
91003f35 6174 rc = qeth_set_online(card);
c4733c32
JW		 6175
6176 qeth_set_allowed_threads(card, 0xffffffff, 0);
6177 if (rc)
6178 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
6179 return rc;
bbcfcdc8
FB		 6180}
6181
36369569
GKH		 6182static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6183 size_t count)
4a71df50
FB		 6184{
6185 int err;
4a71df50 6186
6d8769ab
JW		 6187 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6188 buf);
b7169c51
SO		 6189
6190 return err ? err : count;
6191}
36369569 6192static DRIVER_ATTR_WO(group);
4a71df50 6193
f47e2256
SO		 6194static struct attribute *qeth_drv_attrs[] = {
6195 &driver_attr_group.attr,
6196 NULL,
6197};
6198static struct attribute_group qeth_drv_attr_group = {
6199 .attrs = qeth_drv_attrs,
6200};
6201static const struct attribute_group *qeth_drv_attr_groups[] = {
6202 &qeth_drv_attr_group,
6203 NULL,
6204};
6205
6d8769ab
JW		 6206static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6207 .driver = {
6208 .groups = qeth_drv_attr_groups,
6209 .owner = THIS_MODULE,
6210 .name = "qeth",
6211 },
6212 .ccw_driver = &qeth_ccw_driver,
6213 .setup = qeth_core_probe_device,
6214 .remove = qeth_core_remove_device,
6215 .set_online = qeth_core_set_online,
6216 .set_offline = qeth_core_set_offline,
6217 .shutdown = qeth_core_shutdown,
6218 .prepare = NULL,
6219 .complete = NULL,
c4733c32
JW		 6220 .freeze = qeth_suspend,
6221 .thaw = qeth_resume,
6222 .restore = qeth_resume,
6d8769ab
JW		 6223};
6224
d7d18da1
JW		 6225struct qeth_card *qeth_get_card_by_busid(char *bus_id)
6226{
6227 struct ccwgroup_device *gdev;
6228 struct qeth_card *card;
6229
6230 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
6231 if (!gdev)
6232 return NULL;
6233
6234 card = dev_get_drvdata(&gdev->dev);
6235 put_device(&gdev->dev);
6236 return card;
6237}
6238EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
6239
942d6984
JW		 6240int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6241{
6242 struct qeth_card *card = dev->ml_priv;
6243 struct mii_ioctl_data *mii_data;
6244 int rc = 0;
6245
942d6984
JW		 6246 switch (cmd) {
6247 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6248 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
6249 break;
6250 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 6251 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6252 !IS_VM_NIC(card))
942d6984 6253 return 1;
379ac99e 6254 return 0;
942d6984
JW		 6255 case SIOCGMIIPHY:
6256 mii_data = if_mii(rq);
6257 mii_data->phy_id = 0;
6258 break;
6259 case SIOCGMIIREG:
6260 mii_data = if_mii(rq);
6261 if (mii_data->phy_id != 0)
6262 rc = -EINVAL;
6263 else
6264 mii_data->val_out = qeth_mdio_read(dev,
6265 mii_data->phy_id, mii_data->reg_num);
6266 break;
6267 case SIOC_QETH_QUERY_OAT:
6268 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
6269 break;
6270 default:
6271 if (card->discipline->do_ioctl)
6272 rc = card->discipline->do_ioctl(dev, rq, cmd);
6273 else
6274 rc = -EOPNOTSUPP;
6275 }
6276 if (rc)
6277 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6278 return rc;
6279}
6280EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6281
4386e34f
JW		 6282static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6283 unsigned long data)
c9475369
TR		 6284{
6285 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 6286 u32 *features = reply->param;
c9475369 6287
ad3cbf61 6288 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6289 return -EIO;
c9475369 6290
4386e34f 6291 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 6292 return 0;
6293}
6294
4386e34f
JW		 6295static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6296 enum qeth_prot_versions prot)
c9475369 6297{
1c696c89
JW		 6298 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6299 NULL, prot);
c9475369
TR		 6300}
6301
4386e34f
JW		 6302static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6303 enum qeth_prot_versions prot)
4d7def2a 6304{
571f9dd8 6305 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 6306 struct qeth_cmd_buffer *iob;
6307 struct qeth_ipa_caps caps;
6308 u32 features;
4d7def2a
TR		 6309 int rc;
6310
7e83747d
JW		 6311 /* some L3 HW requires combined L3+L4 csum offload: */
6312 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6313 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 6314 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 6315
4386e34f
JW		 6316 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6317 prot);
6318 if (!iob)
6319 return -ENOMEM;
6320
6321 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6322 if (rc)
4d7def2a 6323 return rc;
7e83747d 6324
4386e34f
JW		 6325 if ((required_features & features) != required_features) {
6326 qeth_set_csum_off(card, cstype, prot);
6327 return -EOPNOTSUPP;
6328 }
7e83747d 6329
b9150461
JW		 6330 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6331 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 6332 prot);
4386e34f
JW		 6333 if (!iob) {
6334 qeth_set_csum_off(card, cstype, prot);
6335 return -ENOMEM;
f9d8e6dc 6336 }
4386e34f
JW		 6337
6338 if (features & QETH_IPA_CHECKSUM_LP2LP)
6339 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6340 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6341 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6342 if (rc) {
4386e34f 6343 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6344 return rc;
6345 }
8f43fb00 6346
4386e34f
JW		 6347 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6348 !qeth_ipa_caps_enabled(&caps, required_features)) {
6349 qeth_set_csum_off(card, cstype, prot);
6350 return -EOPNOTSUPP;
6351 }
6352
a8155b00
KM		 6353 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6354 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
4386e34f
JW		 6355 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
6356 cstype == IPA_OUTBOUND_CHECKSUM)
6357 dev_warn(&card->gdev->dev,
6358 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6359 QETH_CARD_IFNAME(card));
4d7def2a
TR		 6360 return 0;
6361}
6362
a8155b00
KM		 6363static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6364 enum qeth_prot_versions prot)
4d7def2a 6365{
742d4d40
JW		 6366 return on ? qeth_set_csum_on(card, cstype, prot) :
6367 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6368}
4d7def2a 6369
4666d7fb
JW		 6370static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6371 unsigned long data)
6372{
6373 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6374 struct qeth_tso_start_data *tso_data = reply->param;
6375
6376 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6377 return -EIO;
4666d7fb
JW		 6378
6379 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6380 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6381 return 0;
6382}
6383
1f83b817
JW		 6384static int qeth_set_tso_off(struct qeth_card *card,
6385 enum qeth_prot_versions prot)
4d7def2a 6386{
1f83b817 6387 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6388 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6389}
4d7def2a 6390
1f83b817
JW		 6391static int qeth_set_tso_on(struct qeth_card *card,
6392 enum qeth_prot_versions prot)
6393{
4666d7fb
JW		 6394 struct qeth_tso_start_data tso_data;
6395 struct qeth_cmd_buffer *iob;
6396 struct qeth_ipa_caps caps;
6397 int rc;
6398
6399 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6400 IPA_CMD_ASS_START, 0, prot);
6401 if (!iob)
6402 return -ENOMEM;
6403
4fa55fa9 6404 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6405 if (rc)
6406 return rc;
6407
6408 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6409 qeth_set_tso_off(card, prot);
6410 return -EOPNOTSUPP;
6411 }
6412
6413 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6414 IPA_CMD_ASS_ENABLE,
6415 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6416 if (!iob) {
6417 qeth_set_tso_off(card, prot);
6418 return -ENOMEM;
6419 }
6420
6421 /* enable TSO capability */
4fa55fa9
JW		 6422 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6423 QETH_IPA_LARGE_SEND_TCP;
6424 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6425 if (rc) {
6426 qeth_set_tso_off(card, prot);
6427 return rc;
6428 }
6429
6430 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6431 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6432 qeth_set_tso_off(card, prot);
6433 return -EOPNOTSUPP;
6434 }
6435
6436 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6437 tso_data.mss);
6438 return 0;
1f83b817 6439}
4d7def2a 6440
1f83b817
JW		 6441static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6442 enum qeth_prot_versions prot)
6443{
742d4d40 6444 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6445}
8f43fb00 6446
d7e6ed97
KM		 6447static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6448{
6449 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6450 int rc_ipv6;
6451
6452 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6453 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6454 QETH_PROT_IPV4);
6455 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6456 /* no/one Offload Assist available, so the rc is trivial */
6457 return rc_ipv4;
ce344356 6458
d7e6ed97
KM		 6459 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6460 QETH_PROT_IPV6);
6461
6462 if (on)
6463 /* enable: success if any Assist is active */
6464 return (rc_ipv6) ? rc_ipv4 : 0;
6465
6466 /* disable: failure if any Assist is still active */
6467 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6468}
6469
ce344356 6470/**
d025da9e
JW		 6471 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6472 * @dev: a net_device
ce344356 6473 */
d025da9e 6474void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6475{
6476 struct qeth_card *card = dev->ml_priv;
d025da9e 6477 netdev_features_t features;
e830baa9 6478
d025da9e 6479 features = dev->features;
5fc692a7 6480 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6481 * netdev_update_features() will restart them.
6482 */
5fc692a7
JW		 6483 dev->features &= ~dev->hw_features;
6484 /* toggle VLAN filter, so that VIDs are re-programmed: */
6485 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6486 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6487 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6488 }
ce344356 6489 netdev_update_features(dev);
d025da9e
JW		 6490 if (features != dev->features)
6491 dev_warn(&card->gdev->dev,
6492 "Device recovery failed to restore all offload features\n");
e830baa9 6493}
d025da9e 6494EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6495
8f43fb00
TR		 6496int qeth_set_features(struct net_device *dev, netdev_features_t features)
6497{
6498 struct qeth_card *card = dev->ml_priv;
6c7cd712 6499 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6500 int rc = 0;
6501
57a688aa
JW		 6502 QETH_CARD_TEXT(card, 2, "setfeat");
6503 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6504
6c7cd712 6505 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00
KM		 6506 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6507 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6c7cd712
HW		 6508 if (rc)
6509 changed ^= NETIF_F_IP_CSUM;
6510 }
571f9dd8
KM		 6511 if (changed & NETIF_F_IPV6_CSUM) {
6512 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6513 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6514 if (rc)
6515 changed ^= NETIF_F_IPV6_CSUM;
6516 }
d7e6ed97
KM		 6517 if (changed & NETIF_F_RXCSUM) {
6518 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6519 if (rc)
6520 changed ^= NETIF_F_RXCSUM;
6521 }
1f83b817
JW		 6522 if (changed & NETIF_F_TSO) {
6523 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6524 QETH_PROT_IPV4);
6c7cd712
HW		 6525 if (rc)
6526 changed ^= NETIF_F_TSO;
6527 }
82bf5c08
JW		 6528 if (changed & NETIF_F_TSO6) {
6529 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6530 QETH_PROT_IPV6);
6531 if (rc)
6532 changed ^= NETIF_F_TSO6;
6533 }
6c7cd712
HW		 6534
6535 /* everything changed successfully? */
6536 if ((dev->features ^ features) == changed)
6537 return 0;
6538 /* something went wrong. save changed features and return error */
6539 dev->features ^= changed;
6540 return -EIO;
8f43fb00
TR		 6541}
6542EXPORT_SYMBOL_GPL(qeth_set_features);
6543
6544netdev_features_t qeth_fix_features(struct net_device *dev,
6545 netdev_features_t features)
6546{
6547 struct qeth_card *card = dev->ml_priv;
6548
57a688aa 6549 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6550 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6551 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6552 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6553 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6554 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6555 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6556 features &= ~NETIF_F_RXCSUM;
cf536ffe 6557 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6558 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6559 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6560 features &= ~NETIF_F_TSO6;
e6e771b3 6561
57a688aa 6562 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6563 return features;
6564}
6565EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6566
6d69b1f1
JW		 6567netdev_features_t qeth_features_check(struct sk_buff *skb,
6568 struct net_device *dev,
6569 netdev_features_t features)
6570{
6571 /* GSO segmentation builds skbs with
6572 * a (small) linear part for the headers, and
6573 * page frags for the data.
6574 * Compared to a linear skb, the header-only part consumes an
6575 * additional buffer element. This reduces buffer utilization, and
6576 * hurts throughput. So compress small segments into one element.
6577 */
6578 if (netif_needs_gso(skb, features)) {
6579 /* match skb_segment(): */
6580 unsigned int doffset = skb->data - skb_mac_header(skb);
6581 unsigned int hsize = skb_shinfo(skb)->gso_size;
6582 unsigned int hroom = skb_headroom(skb);
6583
6584 /* linearize only if resulting skb allocations are order-0: */
6585 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6586 features &= ~NETIF_F_SG;
6587 }
6588
6589 return vlan_features_check(skb, features);
6590}
6591EXPORT_SYMBOL_GPL(qeth_features_check);
6592
b0abc4f5
JW		 6593void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6594{
6595 struct qeth_card *card = dev->ml_priv;
6596 struct qeth_qdio_out_q *queue;
6597 unsigned int i;
6598
6599 QETH_CARD_TEXT(card, 5, "getstat");
6600
6601 stats->rx_packets = card->stats.rx_packets;
6602 stats->rx_bytes = card->stats.rx_bytes;
845ef904 6603 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 6604 card->stats.rx_frame_errors +
845ef904
JW		 6605 card->stats.rx_fifo_errors;
6606 stats->rx_dropped = card->stats.rx_dropped_nomem +
5b55633f
JW		 6607 card->stats.rx_dropped_notsupp +
6608 card->stats.rx_dropped_runt;
b0abc4f5 6609 stats->multicast = card->stats.rx_multicast;
845ef904 6610 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 6611 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 6612 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 6613
6614 for (i = 0; i < card->qdio.no_out_queues; i++) {
6615 queue = card->qdio.out_qs[i];
6616
6617 stats->tx_packets += queue->stats.tx_packets;
6618 stats->tx_bytes += queue->stats.tx_bytes;
6619 stats->tx_errors += queue->stats.tx_errors;
6620 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 6621 }
6622}
6623EXPORT_SYMBOL_GPL(qeth_get_stats64);
6624
5d8ce41c
JW		 6625#define TC_IQD_UCAST 0
6626static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
6627 unsigned int ucast_txqs)
6628{
6629 unsigned int prio;
6630
6631 /* IQD requires mcast traffic to be placed on a dedicated queue, and
6632 * qeth_iqd_select_queue() deals with this.
6633 * For unicast traffic, we defer the queue selection to the stack.
6634 * By installing a trivial prio map that spans over only the unicast
6635 * queues, we can encourage the stack to spread the ucast traffic evenly
6636 * without selecting the mcast queue.
6637 */
6638
6639 /* One traffic class, spanning over all active ucast queues: */
6640 netdev_set_num_tc(dev, 1);
6641 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
6642 QETH_IQD_MIN_UCAST_TXQ);
6643
6644 /* Map all priorities to this traffic class: */
6645 for (prio = 0; prio <= TC_BITMASK; prio++)
6646 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
6647}
6648
6649int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
6650{
6651 struct net_device *dev = card->dev;
6652 int rc;
6653
6654 /* Per netif_setup_tc(), adjust the mapping first: */
6655 if (IS_IQD(card))
6656 qeth_iqd_set_prio_tc_map(dev, count - 1);
6657
6658 rc = netif_set_real_num_tx_queues(dev, count);
6659
6660 if (rc && IS_IQD(card))
6661 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
6662
6663 return rc;
6664}
6665
3a18d754
JW		 6666u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6667 u8 cast_type, struct net_device *sb_dev)
6668{
66cddf10
JW		 6669 u16 txq;
6670
3a18d754
JW		 6671 if (cast_type != RTN_UNICAST)
6672 return QETH_IQD_MCAST_TXQ;
5d8ce41c
JW		 6673 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
6674 return QETH_IQD_MIN_UCAST_TXQ;
66cddf10
JW		 6675
6676 txq = netdev_pick_tx(dev, skb, sb_dev);
6677 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
3a18d754
JW		 6678}
6679EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6680
e6e771b3 6681int qeth_open(struct net_device *dev)
e22355ea
JW		 6682{
6683 struct qeth_card *card = dev->ml_priv;
6684
6685 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea 6686
e22355ea 6687 card->data.state = CH_STATE_UP;
3a18d754 6688 netif_tx_start_all_queues(dev);
e22355ea
JW		 6689
6690 napi_enable(&card->napi);
6691 local_bh_disable();
6692 napi_schedule(&card->napi);
e53edf74
JW		 6693 if (IS_IQD(card)) {
6694 struct qeth_qdio_out_q *queue;
6695 unsigned int i;
6696
6697 qeth_for_each_output_queue(card, queue, i) {
6698 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
6699 QETH_NAPI_WEIGHT);
6700 napi_enable(&queue->napi);
6701 napi_schedule(&queue->napi);
6702 }
6703 }
e22355ea
JW		 6704 /* kick-start the NAPI softirq: */
6705 local_bh_enable();
6706 return 0;
6707}
e22355ea
JW		 6708EXPORT_SYMBOL_GPL(qeth_open);
6709
6710int qeth_stop(struct net_device *dev)
6711{
6712 struct qeth_card *card = dev->ml_priv;
6713
6714 QETH_CARD_TEXT(card, 4, "qethstop");
e53edf74
JW		 6715 if (IS_IQD(card)) {
6716 struct qeth_qdio_out_q *queue;
6717 unsigned int i;
6718
6719 /* Quiesce the NAPI instances: */
c649c41d 6720 qeth_for_each_output_queue(card, queue, i)
e53edf74 6721 napi_disable(&queue->napi);
e53edf74
JW		 6722
6723 /* Stop .ndo_start_xmit, might still access queue->napi. */
6724 netif_tx_disable(dev);
6725
c649c41d
JW		 6726 qeth_for_each_output_queue(card, queue, i) {
6727 del_timer_sync(&queue->timer);
6728 /* Queues may get re-allocated, so remove the NAPIs. */
e53edf74 6729 netif_napi_del(&queue->napi);
c649c41d 6730 }
e53edf74
JW		 6731 } else {
6732 netif_tx_disable(dev);
6733 }
6734
0f7aedbd 6735 napi_disable(&card->napi);
0a6e6345 6736 qdio_stop_irq(CARD_DDEV(card));
13099824 6737
e22355ea
JW		 6738 return 0;
6739}
6740EXPORT_SYMBOL_GPL(qeth_stop);
6741
4a71df50
FB		 6742static int __init qeth_core_init(void)
6743{
6744 int rc;
6745
74eacdb9 6746 pr_info("loading core functions\n");
4a71df50
FB		 6747
6748 rc = qeth_register_dbf_views();
6749 if (rc)
a936b1ef 6750 goto dbf_err;
035da16f 6751 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 6752 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 6753 if (rc)
6754 goto register_err;
55494264
JW		 6755 qeth_core_header_cache =
6756 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6757 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6758 0, NULL);
683d718a
FB		 6759 if (!qeth_core_header_cache) {
6760 rc = -ENOMEM;
6761 goto slab_err;
6762 }
0da9581d
EL		 6763 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6764 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6765 if (!qeth_qdio_outbuf_cache) {
6766 rc = -ENOMEM;
6767 goto cqslab_err;
6768 }
afb6ac59
SO		 6769 rc = ccw_driver_register(&qeth_ccw_driver);
6770 if (rc)
6771 goto ccw_err;
afb6ac59
SO		 6772 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6773 if (rc)
6774 goto ccwgroup_err;
0da9581d 6775
683d718a 6776 return 0;
afb6ac59
SO		 6777
6778ccwgroup_err:
6779 ccw_driver_unregister(&qeth_ccw_driver);
6780ccw_err:
6781 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 6782cqslab_err:
6783 kmem_cache_destroy(qeth_core_header_cache);
683d718a 6784slab_err:
035da16f 6785 root_device_unregister(qeth_core_root_dev);
4a71df50 6786register_err:
4a71df50 6787 qeth_unregister_dbf_views();
a936b1ef 6788dbf_err:
74eacdb9 6789 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 6790 return rc;
6791}
6792
6793static void __exit qeth_core_exit(void)
6794{
819dc537 6795 qeth_clear_dbf_list();
4a71df50
FB		 6796 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6797 ccw_driver_unregister(&qeth_ccw_driver);
0da9581d 6798 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 6799 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 6800 root_device_unregister(qeth_core_root_dev);
4a71df50 6801 qeth_unregister_dbf_views();
74eacdb9 6802 pr_info("core functions removed\n");
4a71df50
FB		 6803}
6804
6805module_init(qeth_core_init);
6806module_exit(qeth_core_exit);
6807MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6808MODULE_DESCRIPTION("qeth core functions");
6809MODULE_LICENSE("GPL");
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