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s390/qeth: consolidate completion of pending TX buffers
[thirdparty/kernel/stable.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>
378ac80d 20#include <linux/io.h>
4a71df50 21#include <linux/ip.h>
4a71df50
FB		 22#include <linux/tcp.h>
23#include <linux/mii.h>
4e2fe4ed 24#include <linux/mm.h>
4a71df50 25#include <linux/kthread.h>
5a0e3ad6 26#include <linux/slab.h>
6d69b1f1
JW		 27#include <linux/if_vlan.h>
28#include <linux/netdevice.h>
29#include <linux/netdev_features.h>
0d49c06b 30#include <linux/rcutree.h>
6d69b1f1 31#include <linux/skbuff.h>
aec45e85 32#include <linux/vmalloc.h>
6d69b1f1 33
b3332930 34#include <net/iucv/af_iucv.h>
290b8348 35#include <net/dsfield.h>
34c7f50f 36#include <net/sock.h>
4a71df50 37
ab4227cb 38#include <asm/ebcdic.h>
2bf29df7 39#include <asm/chpid.h>
1da74b1c 40#include <asm/sysinfo.h>
ec61bd2f
JW		 41#include <asm/diag.h>
42#include <asm/cio.h>
43#include <asm/ccwdev.h>
615dff22 44#include <asm/cpcmd.h>
4a71df50
FB		 45
46#include "qeth_core.h"
4a71df50 47
d11ba0c4
PT		 48struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
49 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
50 /* N P A M L V H */
51 [QETH_DBF_SETUP] = {"qeth_setup",
52 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
f7e1e65d
SO		 53 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
54 &debug_sprintf_view, NULL},
d11ba0c4
PT		 55 [QETH_DBF_CTRL] = {"qeth_control",
56 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
57};
58EXPORT_SYMBOL_GPL(qeth_dbf);
4a71df50 59
683d718a
FB		 60struct kmem_cache *qeth_core_header_cache;
61EXPORT_SYMBOL_GPL(qeth_core_header_cache);
0da9581d 62static struct kmem_cache *qeth_qdio_outbuf_cache;
4a71df50
FB		 63
64static struct device *qeth_core_root_dev;
fb8d2580 65static struct dentry *qeth_debugfs_root;
4a71df50 66static struct lock_class_key qdio_out_skb_queue_key;
4a71df50 67
988a747d 68static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 69 struct qeth_cmd_buffer *iob,
70 unsigned int data_length);
4a71df50 71static int qeth_qdio_establish(struct qeth_card *);
41c47da3 72static void qeth_free_qdio_queues(struct qeth_card *card);
4a71df50 73
0f54761d
SR		 74static void qeth_close_dev_handler(struct work_struct *work)
75{
76 struct qeth_card *card;
77
78 card = container_of(work, struct qeth_card, close_dev_work);
79 QETH_CARD_TEXT(card, 2, "cldevhdl");
0f54761d
SR		 80 ccwgroup_set_offline(card->gdev);
81}
82
cef6ff22 83static const char *qeth_get_cardname(struct qeth_card *card)
4a71df50 84{
379ac99e 85 if (IS_VM_NIC(card)) {
4a71df50 86 switch (card->info.type) {
5113fec0 87 case QETH_CARD_TYPE_OSD:
7096b187 88 return " Virtual NIC QDIO";
4a71df50 89 case QETH_CARD_TYPE_IQD:
7096b187 90 return " Virtual NIC Hiper";
5113fec0 91 case QETH_CARD_TYPE_OSM:
7096b187 92 return " Virtual NIC QDIO - OSM";
5113fec0 93 case QETH_CARD_TYPE_OSX:
7096b187 94 return " Virtual NIC QDIO - OSX";
4a71df50
FB		 95 default:
96 return " unknown";
97 }
98 } else {
99 switch (card->info.type) {
5113fec0 100 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 101 return " OSD Express";
102 case QETH_CARD_TYPE_IQD:
103 return " HiperSockets";
104 case QETH_CARD_TYPE_OSN:
105 return " OSN QDIO";
5113fec0
UB		 106 case QETH_CARD_TYPE_OSM:
107 return " OSM QDIO";
108 case QETH_CARD_TYPE_OSX:
109 return " OSX QDIO";
4a71df50
FB		 110 default:
111 return " unknown";
112 }
113 }
114 return " n/a";
115}
116
117/* max length to be returned: 14 */
118const char *qeth_get_cardname_short(struct qeth_card *card)
119{
379ac99e 120 if (IS_VM_NIC(card)) {
4a71df50 121 switch (card->info.type) {
5113fec0 122 case QETH_CARD_TYPE_OSD:
7096b187 123 return "Virt.NIC QDIO";
4a71df50 124 case QETH_CARD_TYPE_IQD:
7096b187 125 return "Virt.NIC Hiper";
5113fec0 126 case QETH_CARD_TYPE_OSM:
7096b187 127 return "Virt.NIC OSM";
5113fec0 128 case QETH_CARD_TYPE_OSX:
7096b187 129 return "Virt.NIC OSX";
4a71df50
FB		 130 default:
131 return "unknown";
132 }
133 } else {
134 switch (card->info.type) {
5113fec0 135 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 136 switch (card->info.link_type) {
137 case QETH_LINK_TYPE_FAST_ETH:
138 return "OSD_100";
139 case QETH_LINK_TYPE_HSTR:
140 return "HSTR";
141 case QETH_LINK_TYPE_GBIT_ETH:
142 return "OSD_1000";
143 case QETH_LINK_TYPE_10GBIT_ETH:
144 return "OSD_10GIG";
54e049c2
JW		 145 case QETH_LINK_TYPE_25GBIT_ETH:
146 return "OSD_25GIG";
4a71df50
FB		 147 case QETH_LINK_TYPE_LANE_ETH100:
148 return "OSD_FE_LANE";
149 case QETH_LINK_TYPE_LANE_TR:
150 return "OSD_TR_LANE";
151 case QETH_LINK_TYPE_LANE_ETH1000:
152 return "OSD_GbE_LANE";
153 case QETH_LINK_TYPE_LANE:
154 return "OSD_ATM_LANE";
155 default:
156 return "OSD_Express";
157 }
158 case QETH_CARD_TYPE_IQD:
159 return "HiperSockets";
160 case QETH_CARD_TYPE_OSN:
161 return "OSN";
5113fec0
UB		 162 case QETH_CARD_TYPE_OSM:
163 return "OSM_1000";
164 case QETH_CARD_TYPE_OSX:
165 return "OSX_10GIG";
4a71df50
FB		 166 default:
167 return "unknown";
168 }
169 }
170 return "n/a";
171}
172
173void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
174 int clear_start_mask)
175{
176 unsigned long flags;
177
178 spin_lock_irqsave(&card->thread_mask_lock, flags);
179 card->thread_allowed_mask = threads;
180 if (clear_start_mask)
181 card->thread_start_mask &= threads;
182 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
183 wake_up(&card->wait_q);
184}
185EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
186
187int qeth_threads_running(struct qeth_card *card, unsigned long threads)
188{
189 unsigned long flags;
190 int rc = 0;
191
192 spin_lock_irqsave(&card->thread_mask_lock, flags);
193 rc = (card->thread_running_mask & threads);
194 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
195 return rc;
196}
197EXPORT_SYMBOL_GPL(qeth_threads_running);
198
f2bcf9dd 199static void qeth_clear_working_pool_list(struct qeth_card *card)
4a71df50
FB		 200{
201 struct qeth_buffer_pool_entry *pool_entry, *tmp;
eff73e16
JW		 202 struct qeth_qdio_q *queue = card->qdio.in_q;
203 unsigned int i;
4a71df50 204
847a50fd 205 QETH_CARD_TEXT(card, 5, "clwrklst");
4a71df50 206 list_for_each_entry_safe(pool_entry, tmp,
378ac80d
JW		 207 &card->qdio.in_buf_pool.entry_list, list)
208 list_del(&pool_entry->list);
eff73e16
JW		 209
210 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
211 queue->bufs[i].pool_entry = NULL;
4a71df50 212}
4a71df50 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,
396c1004 369 card->qdio.no_in_queues - 1, 0, 127, NULL);
0da9581d 370 if (rc) {
57a688aa 371 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
0da9581d
EL		 372 goto out;
373 }
374 }
375 rc = 0;
376out:
377 return rc;
378}
379
cef6ff22 380static int qeth_alloc_cq(struct qeth_card *card)
0da9581d 381{
0da9581d 382 if (card->options.cq == QETH_CQ_ENABLED) {
57a688aa 383 QETH_CARD_TEXT(card, 2, "cqon");
4601ba6c 384 card->qdio.c_q = qeth_alloc_qdio_queue();
0da9581d 385 if (!card->qdio.c_q) {
396c1004
JW		 386 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
387 return -ENOMEM;
0da9581d 388 }
396c1004 389
0da9581d 390 card->qdio.no_in_queues = 2;
0da9581d 391 } else {
57a688aa 392 QETH_CARD_TEXT(card, 2, "nocq");
0da9581d
EL		 393 card->qdio.c_q = NULL;
394 card->qdio.no_in_queues = 1;
395 }
57a688aa 396 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
396c1004 397 return 0;
0da9581d
EL		 398}
399
cef6ff22 400static void qeth_free_cq(struct qeth_card *card)
0da9581d
EL		 401{
402 if (card->qdio.c_q) {
403 --card->qdio.no_in_queues;
4601ba6c 404 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 405 card->qdio.c_q = NULL;
406 }
0da9581d
EL		 407}
408
cef6ff22
JW		 409static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 int delayed)
411{
b3332930
FB		 412 enum iucv_tx_notify n;
413
414 switch (sbalf15) {
415 case 0:
416 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
417 break;
418 case 4:
419 case 16:
420 case 17:
421 case 18:
422 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
423 TX_NOTIFY_UNREACHABLE;
424 break;
425 default:
426 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
427 TX_NOTIFY_GENERALERROR;
428 break;
429 }
430
431 return n;
432}
433
cef6ff22
JW		 434static void qeth_qdio_handle_aob(struct qeth_card *card,
435 unsigned long phys_aob_addr)
436{
0da9581d
EL		 437 struct qaob *aob;
438 struct qeth_qdio_out_buffer *buffer;
3e83d467 439 struct qeth_qdio_out_q *queue;
0da9581d
EL		 440
441 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
442 QETH_CARD_TEXT(card, 5, "haob");
443 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
444 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
445 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
446
f875d880 447 if (aob->aorc)
8908f36d 448 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
8908f36d 449
f875d880 450 switch (atomic_xchg(&buffer->state, QETH_QDIO_BUF_QAOB_DONE)) {
8908f36d 451 case QETH_QDIO_BUF_PRIMED:
db4ffdce 452 /* Faster than TX completion code, let it handle the async
396c1004 453 * completion for us. It will also recycle the QAOB.
db4ffdce 454 */
8908f36d
JW		 455 break;
456 case QETH_QDIO_BUF_PENDING:
457 /* TX completion code is active and will handle the async
396c1004 458 * completion for us. It will also recycle the QAOB.
8908f36d
JW		 459 */
460 break;
461 case QETH_QDIO_BUF_NEED_QAOB:
462 /* TX completion code is already finished. */
db4ffdce 463
3e83d467 464 queue = buffer->q;
75cf3854 465 atomic_set(&buffer->state, QETH_QDIO_BUF_EMPTY);
3e83d467 466 napi_schedule(&queue->napi);
8908f36d
JW		 467 break;
468 default:
469 WARN_ON_ONCE(1);
470 }
0da9581d
EL		 471}
472
40554895
JW		 473static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
474 void *data)
45ca2fd6
JW		 475{
476 ccw->cmd_code = cmd_code;
40554895 477 ccw->flags = flags | CCW_FLAG_SLI;
45ca2fd6
JW		 478 ccw->count = len;
479 ccw->cda = (__u32) __pa(data);
480}
481
17bf8c9b 482static int __qeth_issue_next_read(struct qeth_card *card)
4a71df50 483{
d9b9f40b
JW		 484 struct qeth_cmd_buffer *iob = card->read_cmd;
485 struct qeth_channel *channel = iob->channel;
486 struct ccw1 *ccw = __ccw_from_cmd(iob);
750b1625 487 int rc;
4a71df50 488
847a50fd 489 QETH_CARD_TEXT(card, 5, "issnxrd");
750b1625 490 if (channel->state != CH_STATE_UP)
4a71df50 491 return -EIO;
988a747d 492
d9b9f40b
JW		 493 memset(iob->data, 0, iob->length);
494 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
988a747d 495 iob->callback = qeth_issue_next_read_cb;
d9b9f40b
JW		 496 /* keep the cmd alive after completion: */
497 qeth_get_cmd(iob);
498
847a50fd 499 QETH_CARD_TEXT(card, 6, "noirqpnd");
40554895 500 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
f9e50b02
JW		 501 if (!rc) {
502 channel->active_cmd = iob;
503 } else {
e19e5be8
JW		 504 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
505 rc, CARD_DEVID(card));
7359393f 506 qeth_unlock_channel(card, channel);
c3b2218d 507 qeth_put_cmd(iob);
908abbb5 508 card->read_or_write_problem = 1;
4a71df50 509 qeth_schedule_recovery(card);
4a71df50
FB		 510 }
511 return rc;
512}
513
17bf8c9b
JW		 514static int qeth_issue_next_read(struct qeth_card *card)
515{
516 int ret;
517
518 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
519 ret = __qeth_issue_next_read(card);
520 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
521
522 return ret;
523}
524
308946b0
JW		 525static void qeth_enqueue_cmd(struct qeth_card *card,
526 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 527{
528 spin_lock_irq(&card->lock);
04ea30c8 529 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
0951c6ba
JW		 530 spin_unlock_irq(&card->lock);
531}
532
308946b0
JW		 533static void qeth_dequeue_cmd(struct qeth_card *card,
534 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 535{
536 spin_lock_irq(&card->lock);
04ea30c8 537 list_del(&iob->list_entry);
0951c6ba
JW		 538 spin_unlock_irq(&card->lock);
539}
540
308946b0 541void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
0951c6ba 542{
308946b0
JW		 543 iob->rc = reason;
544 complete(&iob->done);
0951c6ba 545}
308946b0 546EXPORT_SYMBOL_GPL(qeth_notify_cmd);
0951c6ba 547
0d49c06b
JW		 548static void qeth_flush_local_addrs4(struct qeth_card *card)
549{
550 struct qeth_local_addr *addr;
551 struct hlist_node *tmp;
552 unsigned int i;
553
554 spin_lock_irq(&card->local_addrs4_lock);
555 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
556 hash_del_rcu(&addr->hnode);
557 kfree_rcu(addr, rcu);
558 }
559 spin_unlock_irq(&card->local_addrs4_lock);
560}
561
562static void qeth_flush_local_addrs6(struct qeth_card *card)
563{
564 struct qeth_local_addr *addr;
565 struct hlist_node *tmp;
566 unsigned int i;
567
568 spin_lock_irq(&card->local_addrs6_lock);
569 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
570 hash_del_rcu(&addr->hnode);
571 kfree_rcu(addr, rcu);
572 }
573 spin_unlock_irq(&card->local_addrs6_lock);
574}
575
f2bcf9dd 576static void qeth_flush_local_addrs(struct qeth_card *card)
0d49c06b
JW		 577{
578 qeth_flush_local_addrs4(card);
579 qeth_flush_local_addrs6(card);
580}
0d49c06b
JW		 581
582static void qeth_add_local_addrs4(struct qeth_card *card,
583 struct qeth_ipacmd_local_addrs4 *cmd)
584{
585 unsigned int i;
586
587 if (cmd->addr_length !=
588 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
589 dev_err_ratelimited(&card->gdev->dev,
590 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
591 cmd->addr_length);
592 return;
593 }
594
595 spin_lock(&card->local_addrs4_lock);
596 for (i = 0; i < cmd->count; i++) {
597 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
598 struct qeth_local_addr *addr;
599 bool duplicate = false;
600
601 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
602 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
603 duplicate = true;
604 break;
605 }
606 }
607
608 if (duplicate)
609 continue;
610
611 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
612 if (!addr) {
613 dev_err(&card->gdev->dev,
614 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
615 &cmd->addrs[i].addr);
616 continue;
617 }
618
619 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
620 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
621 }
622 spin_unlock(&card->local_addrs4_lock);
623}
624
625static void qeth_add_local_addrs6(struct qeth_card *card,
626 struct qeth_ipacmd_local_addrs6 *cmd)
627{
628 unsigned int i;
629
630 if (cmd->addr_length !=
631 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
632 dev_err_ratelimited(&card->gdev->dev,
633 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
634 cmd->addr_length);
635 return;
636 }
637
638 spin_lock(&card->local_addrs6_lock);
639 for (i = 0; i < cmd->count; i++) {
640 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
641 struct qeth_local_addr *addr;
642 bool duplicate = false;
643
644 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
645 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
646 duplicate = true;
647 break;
648 }
649 }
650
651 if (duplicate)
652 continue;
653
654 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
655 if (!addr) {
656 dev_err(&card->gdev->dev,
657 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
658 &cmd->addrs[i].addr);
659 continue;
660 }
661
662 addr->addr = cmd->addrs[i].addr;
663 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
664 }
665 spin_unlock(&card->local_addrs6_lock);
666}
667
668static void qeth_del_local_addrs4(struct qeth_card *card,
669 struct qeth_ipacmd_local_addrs4 *cmd)
670{
671 unsigned int i;
672
673 if (cmd->addr_length !=
674 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
675 dev_err_ratelimited(&card->gdev->dev,
676 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
677 cmd->addr_length);
678 return;
679 }
680
681 spin_lock(&card->local_addrs4_lock);
682 for (i = 0; i < cmd->count; i++) {
683 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
684 unsigned int key = ipv4_addr_hash(addr->addr);
685 struct qeth_local_addr *tmp;
686
687 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
688 if (tmp->addr.s6_addr32[3] == addr->addr) {
689 hash_del_rcu(&tmp->hnode);
690 kfree_rcu(tmp, rcu);
691 break;
692 }
693 }
694 }
695 spin_unlock(&card->local_addrs4_lock);
696}
697
698static void qeth_del_local_addrs6(struct qeth_card *card,
699 struct qeth_ipacmd_local_addrs6 *cmd)
700{
701 unsigned int i;
702
703 if (cmd->addr_length !=
704 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
705 dev_err_ratelimited(&card->gdev->dev,
706 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
707 cmd->addr_length);
708 return;
709 }
710
711 spin_lock(&card->local_addrs6_lock);
712 for (i = 0; i < cmd->count; i++) {
713 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
714 u32 key = ipv6_addr_hash(&addr->addr);
715 struct qeth_local_addr *tmp;
716
717 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
718 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
719 hash_del_rcu(&tmp->hnode);
720 kfree_rcu(tmp, rcu);
721 break;
722 }
723 }
724 }
725 spin_unlock(&card->local_addrs6_lock);
726}
727
c619e9a6
JW		 728static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
729 struct sk_buff *skb)
730{
731 struct qeth_local_addr *tmp;
732 bool is_local = false;
733 unsigned int key;
734 __be32 next_hop;
735
736 if (hash_empty(card->local_addrs4))
737 return false;
738
739 rcu_read_lock();
17f3a8b5
JW		 740 next_hop = qeth_next_hop_v4_rcu(skb,
741 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
c619e9a6
JW		 742 key = ipv4_addr_hash(next_hop);
743
744 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
745 if (tmp->addr.s6_addr32[3] == next_hop) {
746 is_local = true;
747 break;
748 }
749 }
750 rcu_read_unlock();
751
752 return is_local;
753}
754
755static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
756 struct sk_buff *skb)
757{
758 struct qeth_local_addr *tmp;
759 struct in6_addr *next_hop;
760 bool is_local = false;
761 u32 key;
762
763 if (hash_empty(card->local_addrs6))
764 return false;
765
766 rcu_read_lock();
17f3a8b5
JW		 767 next_hop = qeth_next_hop_v6_rcu(skb,
768 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
c619e9a6
JW		 769 key = ipv6_addr_hash(next_hop);
770
771 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
772 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
773 is_local = true;
774 break;
775 }
776 }
777 rcu_read_unlock();
778
779 return is_local;
780}
781
fb8d2580
JW		 782static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
783{
784 struct qeth_card *card = m->private;
785 struct qeth_local_addr *tmp;
786 unsigned int i;
787
788 rcu_read_lock();
789 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
790 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
791 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
792 seq_printf(m, "%pI6c\n", &tmp->addr);
793 rcu_read_unlock();
794
795 return 0;
796}
797
798DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
799
d11ba0c4 800static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
4a71df50
FB		 801 struct qeth_card *card)
802{
048a7f8b 803 const char *ipa_name;
d11ba0c4 804 int com = cmd->hdr.command;
378ac80d 805
4a71df50 806 ipa_name = qeth_get_ipa_cmd_name(com);
e19e5be8 807
d11ba0c4 808 if (rc)
e19e5be8
JW		 809 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
810 ipa_name, com, CARD_DEVID(card), rc,
811 qeth_get_ipa_msg(rc));
d11ba0c4 812 else
e19e5be8
JW		 813 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
814 ipa_name, com, CARD_DEVID(card));
4a71df50
FB		 815}
816
817static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 818 struct qeth_ipa_cmd *cmd)
4a71df50 819{
847a50fd 820 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 821
822 if (IS_IPA_REPLY(cmd)) {
823 if (cmd->hdr.command != IPA_CMD_SETCCID &&
824 cmd->hdr.command != IPA_CMD_DELCCID &&
825 cmd->hdr.command != IPA_CMD_MODCCID &&
826 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
827 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
828 return cmd;
829 }
830
831 /* handle unsolicited event: */
832 switch (cmd->hdr.command) {
833 case IPA_CMD_STOPLAN:
834 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
835 dev_err(&card->gdev->dev,
836 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
84c91482 837 netdev_name(card->dev));
dcef5cad 838 schedule_work(&card->close_dev_work);
4a71df50 839 } else {
d19b93f4
JW		 840 dev_warn(&card->gdev->dev,
841 "The link for interface %s on CHPID 0x%X failed\n",
84c91482 842 netdev_name(card->dev), card->info.chpid);
d19b93f4 843 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 844 netif_carrier_off(card->dev);
4a71df50 845 }
d19b93f4
JW		 846 return NULL;
847 case IPA_CMD_STARTLAN:
848 dev_info(&card->gdev->dev,
849 "The link for %s on CHPID 0x%X has been restored\n",
84c91482 850 netdev_name(card->dev), card->info.chpid);
d19b93f4
JW		 851 if (card->info.hwtrap)
852 card->info.hwtrap = 2;
853 qeth_schedule_recovery(card);
854 return NULL;
855 case IPA_CMD_SETBRIDGEPORT_IQD:
856 case IPA_CMD_SETBRIDGEPORT_OSA:
857 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
858 if (card->discipline->control_event_handler(card, cmd))
859 return cmd;
860 return NULL;
861 case IPA_CMD_MODCCID:
862 return cmd;
863 case IPA_CMD_REGISTER_LOCAL_ADDR:
0d49c06b
JW		 864 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
865 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
866 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
867 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
868
d19b93f4
JW		 869 QETH_CARD_TEXT(card, 3, "irla");
870 return NULL;
871 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
0d49c06b
JW		 872 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
873 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
874 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
875 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
876
d19b93f4
JW		 877 QETH_CARD_TEXT(card, 3, "urla");
878 return NULL;
879 default:
880 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
881 return cmd;
4a71df50 882 }
4a71df50
FB		 883}
884
7fb7fe5c 885static void qeth_clear_ipacmd_list(struct qeth_card *card)
4a71df50 886{
308946b0 887 struct qeth_cmd_buffer *iob;
4a71df50
FB		 888 unsigned long flags;
889
847a50fd 890 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 891
892 spin_lock_irqsave(&card->lock, flags);
04ea30c8 893 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
dbdd04d3 894 qeth_notify_cmd(iob, -ECANCELED);
4a71df50
FB		 895 spin_unlock_irqrestore(&card->lock, flags);
896}
4a71df50 897
5113fec0
UB		 898static int qeth_check_idx_response(struct qeth_card *card,
899 unsigned char *buffer)
4a71df50 900{
d11ba0c4 901 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
2e3d7fa5 902 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
e19e5be8 903 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 904 buffer[4]);
847a50fd
CO		 905 QETH_CARD_TEXT(card, 2, "ckidxres");
906 QETH_CARD_TEXT(card, 2, " idxterm");
2e3d7fa5
JW		 907 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
908 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
909 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
5113fec0 910 dev_err(&card->gdev->dev,
2e3d7fa5
JW		 911 "The device does not support the configured transport mode\n");
912 return -EPROTONOSUPPORT;
5113fec0 913 }
4a71df50
FB		 914 return -EIO;
915 }
916 return 0;
917}
918
c3b2218d 919void qeth_put_cmd(struct qeth_cmd_buffer *iob)
d9b9f40b
JW		 920{
921 if (refcount_dec_and_test(&iob->ref_count)) {
d9b9f40b
JW		 922 kfree(iob->data);
923 kfree(iob);
924 }
925}
c3b2218d 926EXPORT_SYMBOL_GPL(qeth_put_cmd);
4a71df50 927
8f6637b8 928static void qeth_release_buffer_cb(struct qeth_card *card,
12fc286f
JW		 929 struct qeth_cmd_buffer *iob,
930 unsigned int data_length)
8f6637b8 931{
c3b2218d 932 qeth_put_cmd(iob);
8f6637b8
JW		 933}
934
54daaca7
JW		 935static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
936{
308946b0 937 qeth_notify_cmd(iob, rc);
c3b2218d 938 qeth_put_cmd(iob);
4a71df50 939}
4a71df50 940
a59d121d
JW		 941struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
942 unsigned int length, unsigned int ccws,
943 long timeout)
40554895
JW		 944{
945 struct qeth_cmd_buffer *iob;
946
947 if (length > QETH_BUFSIZE)
948 return NULL;
949
950 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
951 if (!iob)
952 return NULL;
953
954 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
955 GFP_KERNEL | GFP_DMA);
956 if (!iob->data) {
957 kfree(iob);
958 return NULL;
959 }
960
308946b0
JW		 961 init_completion(&iob->done);
962 spin_lock_init(&iob->lock);
d9b9f40b 963 refcount_set(&iob->ref_count, 1);
40554895
JW		 964 iob->channel = channel;
965 iob->timeout = timeout;
966 iob->length = length;
967 return iob;
968}
a59d121d 969EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
40554895 970
988a747d 971static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 972 struct qeth_cmd_buffer *iob,
973 unsigned int data_length)
4a71df50 974{
308946b0 975 struct qeth_cmd_buffer *request = NULL;
d19b93f4 976 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba 977 struct qeth_reply *reply = NULL;
308946b0 978 struct qeth_cmd_buffer *tmp;
4a71df50 979 unsigned long flags;
5113fec0 980 int rc = 0;
4a71df50 981
847a50fd 982 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 983 rc = qeth_check_idx_response(card, iob->data);
984 switch (rc) {
985 case 0:
986 break;
987 case -EIO:
5113fec0 988 qeth_schedule_recovery(card);
df561f66 989 fallthrough;
5113fec0 990 default:
2e3d7fa5 991 qeth_clear_ipacmd_list(card);
3a5bad64 992 goto err_idx;
4a71df50
FB		 993 }
994
7f92316c
JW		 995 cmd = __ipa_reply(iob);
996 if (cmd) {
d19b93f4 997 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 998 if (!cmd)
999 goto out;
1000 if (IS_OSN(card) && card->osn_info.assist_cb &&
1001 cmd->hdr.command != IPA_CMD_STARTLAN) {
1002 card->osn_info.assist_cb(card->dev, cmd);
1003 goto out;
1004 }
4a71df50
FB		 1005 }
1006
0951c6ba 1007 /* match against pending cmd requests */
4a71df50 1008 spin_lock_irqsave(&card->lock, flags);
04ea30c8 1009 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
7f92316c 1010 if (tmp->match && tmp->match(tmp, iob)) {
308946b0 1011 request = tmp;
0951c6ba 1012 /* take the object outside the lock */
308946b0 1013 qeth_get_cmd(request);
0951c6ba 1014 break;
4a71df50
FB		 1015 }
1016 }
1017 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba 1018
308946b0 1019 if (!request)
0951c6ba
JW		 1020 goto out;
1021
308946b0 1022 reply = &request->reply;
4b7ae122
JW		 1023 if (!reply->callback) {
1024 rc = 0;
072f7940
JW		 1025 goto no_callback;
1026 }
1027
308946b0
JW		 1028 spin_lock_irqsave(&request->lock, flags);
1029 if (request->rc)
072f7940 1030 /* Bail out when the requestor has already left: */
308946b0 1031 rc = request->rc;
7c5f8ffb
JW		 1032 else
1033 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
1034 (unsigned long)iob);
308946b0 1035 spin_unlock_irqrestore(&request->lock, flags);
0951c6ba 1036
072f7940 1037no_callback:
61e04465 1038 if (rc <= 0)
308946b0
JW		 1039 qeth_notify_cmd(request, rc);
1040 qeth_put_cmd(request);
4a71df50
FB		 1041out:
1042 memcpy(&card->seqno.pdu_hdr_ack,
1043 QETH_PDU_HEADER_SEQ_NO(iob->data),
1044 QETH_SEQ_NO_LENGTH);
7cbc9e8f 1045 __qeth_issue_next_read(card);
3a5bad64
JW		 1046err_idx:
1047 qeth_put_cmd(iob);
4a71df50
FB		 1048}
1049
4a71df50
FB		 1050static int qeth_set_thread_start_bit(struct qeth_card *card,
1051 unsigned long thread)
1052{
1053 unsigned long flags;
7005b754 1054 int rc = 0;
4a71df50
FB		 1055
1056 spin_lock_irqsave(&card->thread_mask_lock, flags);
7005b754
JW		 1057 if (!(card->thread_allowed_mask & thread))
1058 rc = -EPERM;
1059 else if (card->thread_start_mask & thread)
1060 rc = -EBUSY;
1061 else
1062 card->thread_start_mask |= thread;
4a71df50 1063 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
7005b754
JW		 1064
1065 return rc;
4a71df50
FB		 1066}
1067
91003f35
JW		 1068static void qeth_clear_thread_start_bit(struct qeth_card *card,
1069 unsigned long thread)
4a71df50
FB		 1070{
1071 unsigned long flags;
1072
1073 spin_lock_irqsave(&card->thread_mask_lock, flags);
1074 card->thread_start_mask &= ~thread;
1075 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1076 wake_up(&card->wait_q);
1077}
4a71df50 1078
91003f35
JW		 1079static void qeth_clear_thread_running_bit(struct qeth_card *card,
1080 unsigned long thread)
4a71df50
FB		 1081{
1082 unsigned long flags;
1083
1084 spin_lock_irqsave(&card->thread_mask_lock, flags);
1085 card->thread_running_mask &= ~thread;
1086 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 1087 wake_up_all(&card->wait_q);
4a71df50 1088}
4a71df50
FB		 1089
1090static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1091{
1092 unsigned long flags;
1093 int rc = 0;
1094
1095 spin_lock_irqsave(&card->thread_mask_lock, flags);
1096 if (card->thread_start_mask & thread) {
1097 if ((card->thread_allowed_mask & thread) &&
1098 !(card->thread_running_mask & thread)) {
1099 rc = 1;
1100 card->thread_start_mask &= ~thread;
1101 card->thread_running_mask |= thread;
1102 } else
1103 rc = -EPERM;
1104 }
1105 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1106 return rc;
1107}
1108
91003f35 1109static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
4a71df50
FB		 1110{
1111 int rc = 0;
1112
1113 wait_event(card->wait_q,
1114 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1115 return rc;
1116}
4a71df50 1117
7005b754 1118int qeth_schedule_recovery(struct qeth_card *card)
4a71df50 1119{
7005b754
JW		 1120 int rc;
1121
847a50fd 1122 QETH_CARD_TEXT(card, 2, "startrec");
7005b754
JW		 1123
1124 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1125 if (!rc)
4a71df50 1126 schedule_work(&card->kernel_thread_starter);
7005b754
JW		 1127
1128 return rc;
4a71df50 1129}
4a71df50 1130
8d908eb0
JW		 1131static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1132 struct irb *irb)
4a71df50
FB		 1133{
1134 int dstat, cstat;
1135 char *sense;
1136
1137 sense = (char *) irb->ecw;
23d805b6
PO		 1138 cstat = irb->scsw.cmd.cstat;
1139 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 1140
1141 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1142 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1143 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 1144 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 1145 dev_warn(&cdev->dev, "The qeth device driver "
1146 "failed to recover an error on the device\n");
e19e5be8
JW		 1147 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1148 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 1149 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1150 16, 1, irb, 64, 1);
2f3c269d 1151 return -EIO;
4a71df50
FB		 1152 }
1153
1154 if (dstat & DEV_STAT_UNIT_CHECK) {
1155 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1156 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 1157 QETH_CARD_TEXT(card, 2, "REVIND");
2f3c269d 1158 return -EIO;
4a71df50
FB		 1159 }
1160 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1161 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 1162 QETH_CARD_TEXT(card, 2, "CMDREJi");
2f3c269d 1163 return -EIO;
4a71df50
FB		 1164 }
1165 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 1166 QETH_CARD_TEXT(card, 2, "AFFE");
2f3c269d 1167 return -EIO;
4a71df50
FB		 1168 }
1169 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 1170 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 1171 return 0;
1172 }
847a50fd 1173 QETH_CARD_TEXT(card, 2, "DGENCHK");
378ac80d 1174 return -EIO;
4a71df50
FB		 1175 }
1176 return 0;
1177}
1178
54daaca7 1179static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 1180 struct irb *irb)
4a71df50 1181{
8d908eb0 1182 if (!IS_ERR(irb))
4a71df50
FB		 1183 return 0;
1184
1185 switch (PTR_ERR(irb)) {
1186 case -EIO:
e19e5be8
JW		 1187 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1188 CCW_DEVID(cdev));
847a50fd
CO		 1189 QETH_CARD_TEXT(card, 2, "ckirberr");
1190 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 1191 return -EIO;
4a71df50 1192 case -ETIMEDOUT:
74eacdb9
FB		 1193 dev_warn(&cdev->dev, "A hardware operation timed out"
1194 " on the device\n");
847a50fd
CO		 1195 QETH_CARD_TEXT(card, 2, "ckirberr");
1196 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 1197 return -ETIMEDOUT;
4a71df50 1198 default:
e19e5be8
JW		 1199 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1200 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 1201 QETH_CARD_TEXT(card, 2, "ckirberr");
1202 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 1203 return PTR_ERR(irb);
4a71df50 1204 }
4a71df50
FB		 1205}
1206
1207static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1208 struct irb *irb)
1209{
1210 int rc;
1211 int cstat, dstat;
db71bbbd 1212 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1213 struct ccwgroup_device *gdev;
4a71df50
FB		 1214 struct qeth_channel *channel;
1215 struct qeth_card *card;
4a71df50 1216
8d908eb0
JW		 1217 /* while we hold the ccwdev lock, this stays valid: */
1218 gdev = dev_get_drvdata(&cdev->dev);
1219 card = dev_get_drvdata(&gdev->dev);
4a71df50 1220
847a50fd
CO		 1221 QETH_CARD_TEXT(card, 5, "irq");
1222
4a71df50
FB		 1223 if (card->read.ccwdev == cdev) {
1224 channel = &card->read;
847a50fd 1225 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1226 } else if (card->write.ccwdev == cdev) {
1227 channel = &card->write;
847a50fd 1228 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1229 } else {
1230 channel = &card->data;
847a50fd 1231 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1232 }
db71bbbd 1233
f9e50b02
JW		 1234 if (intparm == 0) {
1235 QETH_CARD_TEXT(card, 5, "irqunsol");
1236 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1237 QETH_CARD_TEXT(card, 5, "irqunexp");
1238
1239 dev_err(&cdev->dev,
1240 "Received IRQ with intparm %lx, expected %px\n",
1241 intparm, channel->active_cmd);
1242 if (channel->active_cmd)
1243 qeth_cancel_cmd(channel->active_cmd, -EIO);
1244 } else {
1245 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1246 }
1247
7359393f 1248 qeth_unlock_channel(card, channel);
db71bbbd 1249
2066e1db 1250 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1251 if (rc) {
db71bbbd
JW		 1252 /* IO was terminated, free its resources. */
1253 if (iob)
54daaca7 1254 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1255 return;
1256 }
1257
7359393f 1258 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
4a71df50 1259 channel->state = CH_STATE_STOPPED;
7359393f
JW		 1260 wake_up(&card->wait_q);
1261 }
4a71df50 1262
7359393f 1263 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
4a71df50 1264 channel->state = CH_STATE_HALTED;
7359393f
JW		 1265 wake_up(&card->wait_q);
1266 }
4a71df50 1267
f9e50b02
JW		 1268 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1269 SCSW_FCTL_HALT_FUNC))) {
1270 qeth_cancel_cmd(iob, -ECANCELED);
1271 iob = NULL;
4a71df50 1272 }
db71bbbd
JW		 1273
1274 cstat = irb->scsw.cmd.cstat;
1275 dstat = irb->scsw.cmd.dstat;
1276
4a71df50
FB		 1277 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1278 (dstat & DEV_STAT_UNIT_CHECK) ||
1279 (cstat)) {
1280 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1281 dev_warn(&channel->ccwdev->dev,
1282 "The qeth device driver failed to recover "
1283 "an error on the device\n");
e19e5be8
JW		 1284 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1285 CCW_DEVID(channel->ccwdev), cstat,
1286 dstat);
4a71df50
FB		 1287 print_hex_dump(KERN_WARNING, "qeth: irb ",
1288 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1289 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1290 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1291 }
2066e1db 1292
8d908eb0 1293 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1294 if (rc) {
a6c3d939 1295 card->read_or_write_problem = 1;
5065b2dd 1296 if (iob)
54daaca7 1297 qeth_cancel_cmd(iob, rc);
28a7e4c9 1298 qeth_clear_ipacmd_list(card);
4a71df50 1299 qeth_schedule_recovery(card);
7359393f 1300 return;
4a71df50
FB		 1301 }
1302 }
1303
12fc286f
JW		 1304 if (iob) {
1305 /* sanity check: */
1306 if (irb->scsw.cmd.count > iob->length) {
1307 qeth_cancel_cmd(iob, -EIO);
7359393f 1308 return;
12fc286f
JW		 1309 }
1310 if (iob->callback)
1311 iob->callback(card, iob,
1312 iob->length - irb->scsw.cmd.count);
1313 }
4a71df50
FB		 1314}
1315
b3332930 1316static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1317 struct qeth_qdio_out_buffer *buf,
b3332930 1318 enum iucv_tx_notify notification)
4a71df50 1319{
4a71df50
FB		 1320 struct sk_buff *skb;
1321
dc149e37 1322 skb_queue_walk(&buf->skb_list, skb) {
80bc97aa
JW		 1323 struct sock *sk = skb->sk;
1324
b3332930
FB		 1325 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1326 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
80bc97aa
JW		 1327 if (sk && sk->sk_family == PF_IUCV)
1328 iucv_sk(sk)->sk_txnotify(sk, notification);
b3332930 1329 }
b3332930
FB		 1330}
1331
85e537d8
JW		 1332static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1333 int budget)
b3332930 1334{
eeac0e20 1335 struct qeth_qdio_out_q *queue = buf->q;
104b4859
JW		 1336 struct sk_buff *skb;
1337
eeac0e20
JW		 1338 /* Empty buffer? */
1339 if (buf->next_element_to_fill == 0)
1340 return;
1341
1342 QETH_TXQ_STAT_INC(queue, bufs);
1343 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1ab2f8c6
JW		 1344 if (error) {
1345 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1346 } else {
1347 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1348 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1349 }
1350
eeac0e20
JW		 1351 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1352 unsigned int bytes = qdisc_pkt_len(skb);
1353 bool is_tso = skb_is_gso(skb);
1354 unsigned int packets;
1355
1356 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1ab2f8c6 1357 if (!error) {
eeac0e20
JW		 1358 if (skb->ip_summed == CHECKSUM_PARTIAL)
1359 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1360 if (skb_is_nonlinear(skb))
1361 QETH_TXQ_STAT_INC(queue, skbs_sg);
1362 if (is_tso) {
1363 QETH_TXQ_STAT_INC(queue, skbs_tso);
1364 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1365 }
1366 }
6a3123d0 1367
85e537d8 1368 napi_consume_skb(skb, budget);
eeac0e20 1369 }
b3332930
FB		 1370}
1371
1372static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1373 struct qeth_qdio_out_buffer *buf,
85e537d8 1374 bool error, int budget)
b3332930
FB		 1375{
1376 int i;
1377
1378 /* is PCI flag set on buffer? */
e872d0c1 1379 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
b3332930 1380 atomic_dec(&queue->set_pci_flags_count);
e872d0c1
JW		 1381 QETH_TXQ_STAT_INC(queue, completion_irq);
1382 }
b3332930 1383
85e537d8 1384 qeth_tx_complete_buf(buf, error, budget);
3b346c18 1385
4e26c5fe 1386 for (i = 0; i < queue->max_elements; ++i) {
2db01da8
JW		 1387 void *data = phys_to_virt(buf->buffer->element[i].addr);
1388
1389 if (data && buf->is_header[i])
1390 kmem_cache_free(qeth_core_header_cache, data);
683d718a 1391 buf->is_header[i] = 0;
4a71df50 1392 }
3b346c18 1393
4e26c5fe 1394 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1395 buf->next_element_to_fill = 0;
1ab2f8c6 1396 buf->frames = 0;
96bd6c94 1397 buf->bytes = 0;
3b346c18 1398 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1399}
1400
396c1004
JW		 1401static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1402{
1403 if (buf->aob)
1404 qdio_release_aob(buf->aob);
1405 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1406}
1407
c20383ad
JW		 1408static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1409 struct qeth_qdio_out_q *queue,
ad4bbd72 1410 bool drain, int budget)
c20383ad
JW		 1411{
1412 struct qeth_qdio_out_buffer *buf, *tmp;
1413
1414 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
f875d880
JW		 1415 struct qaob *aob = buf->aob;
1416 enum iucv_tx_notify notify;
1417 unsigned int i;
1418
c20383ad
JW		 1419 if (drain || atomic_read(&buf->state) == QETH_QDIO_BUF_EMPTY) {
1420 QETH_CARD_TEXT(card, 5, "fp");
1421 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1422
f875d880
JW		 1423 notify = drain ? TX_NOTIFY_GENERALERROR :
1424 qeth_compute_cq_notification(aob->aorc, 1);
1425 qeth_notify_skbs(queue, buf, notify);
ad4bbd72 1426 qeth_tx_complete_buf(buf, drain, budget);
c20383ad 1427
f875d880
JW		 1428 for (i = 0;
1429 i < aob->sb_count && i < queue->max_elements;
1430 i++) {
1431 void *data = phys_to_virt(aob->sba[i]);
1432
1433 if (data && buf->is_header[i])
1434 kmem_cache_free(qeth_core_header_cache,
1435 data);
1436 }
1437
c20383ad 1438 list_del(&buf->list_entry);
396c1004 1439 qeth_free_out_buf(buf);
c20383ad
JW		 1440 }
1441 }
1442}
1443
41c47da3 1444static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1445{
1446 int j;
1447
ad4bbd72 1448 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
c20383ad 1449
0da9581d
EL		 1450 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1451 if (!q->bufs[j])
1452 continue;
c20383ad 1453
85e537d8 1454 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d 1455 if (free) {
396c1004 1456 qeth_free_out_buf(q->bufs[j]);
0da9581d
EL		 1457 q->bufs[j] = NULL;
1458 }
1459 }
4a71df50
FB		 1460}
1461
f2bcf9dd 1462static void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1463{
0da9581d 1464 int i;
4a71df50 1465
847a50fd 1466 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1467 /* clear outbound buffers to free skbs */
0da9581d 1468 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1469 if (card->qdio.out_qs[i])
1470 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1471 }
4a71df50 1472}
4a71df50 1473
bb5ab541 1474static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1475{
1c103cf8 1476 unsigned int max = single ? 1 : card->dev->num_tx_queues;
bd966839 1477
1c103cf8 1478 if (card->qdio.no_out_queues == max)
bb5ab541 1479 return;
725b9c04 1480
73dc2daf 1481 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1482 qeth_free_qdio_queues(card);
73dc2daf 1483
1c103cf8 1484 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
73dc2daf
JW		 1485 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1486
1c103cf8 1487 card->qdio.no_out_queues = max;
725b9c04
SO		 1488}
1489
a4cdc9ba 1490static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1491{
4a71df50 1492 struct ccw_device *ccwdev;
ded27d8d 1493 struct channel_path_desc_fmt0 *chp_dsc;
4a71df50 1494
57a688aa 1495 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1496
1497 ccwdev = card->data.ccwdev;
725b9c04
SO		 1498 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1499 if (!chp_dsc)
a4cdc9ba 1500 return -ENOMEM;
725b9c04
SO		 1501
1502 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1503
73dc2daf
JW		 1504 if (IS_OSD(card) || IS_OSX(card))
1505 /* CHPP field bit 6 == 1 -> single queue */
bb5ab541 1506 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1507
725b9c04 1508 kfree(chp_dsc);
57a688aa
JW		 1509 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1510 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bb5ab541 1511 return 0;
4a71df50
FB		 1512}
1513
1514static void qeth_init_qdio_info(struct qeth_card *card)
1515{
57a688aa 1516 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1517 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1518 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1519 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1520
4a71df50 1521 /* inbound */
ed2e93ef 1522 card->qdio.no_in_queues = 1;
4a71df50 1523 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1524 if (IS_IQD(card))
dcf4ae2d
FB		 1525 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1526 else
1527 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1528 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1529 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1530 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1531}
1532
95f4d8b7 1533static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1534{
1535 card->options.route4.type = NO_ROUTER;
1536 card->options.route6.type = NO_ROUTER;
d64ecc22 1537 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1538 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1539 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1540}
1541
1542static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1543{
1544 unsigned long flags;
1545 int rc = 0;
1546
1547 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1548 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1549 (u8) card->thread_start_mask,
1550 (u8) card->thread_allowed_mask,
1551 (u8) card->thread_running_mask);
1552 rc = (card->thread_start_mask & thread);
1553 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1554 return rc;
1555}
1556
91003f35 1557static int qeth_do_reset(void *data);
4a71df50
FB		 1558static void qeth_start_kernel_thread(struct work_struct *work)
1559{
3f36b890 1560 struct task_struct *ts;
4a71df50
FB		 1561 struct qeth_card *card = container_of(work, struct qeth_card,
1562 kernel_thread_starter);
378ac80d 1563 QETH_CARD_TEXT(card, 2, "strthrd");
4a71df50
FB		 1564
1565 if (card->read.state != CH_STATE_UP &&
1566 card->write.state != CH_STATE_UP)
1567 return;
3f36b890 1568 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
91003f35 1569 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
3f36b890
FB		 1570 if (IS_ERR(ts)) {
1571 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1572 qeth_clear_thread_running_bit(card,
1573 QETH_RECOVER_THREAD);
1574 }
1575 }
4a71df50
FB		 1576}
1577
bca51650 1578static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1579static void qeth_setup_card(struct qeth_card *card)
4a71df50 1580{
57a688aa 1581 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1582
95f4d8b7 1583 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1584 card->state = CARD_STATE_DOWN;
4a71df50 1585 spin_lock_init(&card->lock);
4a71df50 1586 spin_lock_init(&card->thread_mask_lock);
c4949f07 1587 mutex_init(&card->conf_mutex);
9dc48ccc 1588 mutex_init(&card->discipline_mutex);
4a71df50 1589 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1590 INIT_LIST_HEAD(&card->cmd_waiter_list);
1591 init_waitqueue_head(&card->wait_q);
95f4d8b7 1592 qeth_set_initial_options(card);
4a71df50
FB		 1593 /* IP address takeover */
1594 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1595 qeth_init_qdio_info(card);
b3332930 1596 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0f54761d 1597 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
0973292f 1598 hash_init(card->rx_mode_addrs);
0d49c06b
JW		 1599 hash_init(card->local_addrs4);
1600 hash_init(card->local_addrs6);
1601 spin_lock_init(&card->local_addrs4_lock);
1602 spin_lock_init(&card->local_addrs6_lock);
4a71df50
FB		 1603}
1604
6bcac508
MS		 1605static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1606{
1607 struct qeth_card *card = container_of(slr, struct qeth_card,
1608 qeth_service_level);
0d788c7d
KDW		 1609 if (card->info.mcl_level[0])
1610 seq_printf(m, "qeth: %s firmware level %s\n",
1611 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1612}
1613
121ca39a 1614static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1615{
1616 struct qeth_card *card;
1617
d11ba0c4 1618 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1619 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1620 if (!card)
76b11f8e 1621 goto out;
d11ba0c4 1622 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1623
1624 card->gdev = gdev;
a2eb0ad5 1625 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1626 CARD_RDEV(card) = gdev->cdev[0];
1627 CARD_WDEV(card) = gdev->cdev[1];
1628 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1629
7686e4b6
JW		 1630 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1631 dev_name(&gdev->dev));
c0a2e4d1
JW		 1632 if (!card->event_wq)
1633 goto out_wq;
d9b9f40b
JW		 1634
1635 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1636 if (!card->read_cmd)
1637 goto out_read_cmd;
c3b2218d 1638
fb8d2580
JW		 1639 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1640 qeth_debugfs_root);
1641 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1642 &qeth_debugfs_local_addr_fops);
1643
6bcac508
MS		 1644 card->qeth_service_level.seq_print = qeth_core_sl_print;
1645 register_service_level(&card->qeth_service_level);
4a71df50 1646 return card;
76b11f8e 1647
d9b9f40b 1648out_read_cmd:
c0a2e4d1
JW		 1649 destroy_workqueue(card->event_wq);
1650out_wq:
a2eb0ad5 1651 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1652 kfree(card);
1653out:
1654 return NULL;
4a71df50
FB		 1655}
1656
8d908eb0
JW		 1657static int qeth_clear_channel(struct qeth_card *card,
1658 struct qeth_channel *channel)
4a71df50 1659{
4a71df50
FB		 1660 int rc;
1661
847a50fd 1662 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1663 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1664 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1665 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1666
1667 if (rc)
1668 return rc;
1669 rc = wait_event_interruptible_timeout(card->wait_q,
1670 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1671 if (rc == -ERESTARTSYS)
1672 return rc;
1673 if (channel->state != CH_STATE_STOPPED)
1674 return -ETIME;
1675 channel->state = CH_STATE_DOWN;
1676 return 0;
1677}
1678
8d908eb0
JW		 1679static int qeth_halt_channel(struct qeth_card *card,
1680 struct qeth_channel *channel)
4a71df50 1681{
4a71df50
FB		 1682 int rc;
1683
847a50fd 1684 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1685 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1686 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1687 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1688
1689 if (rc)
1690 return rc;
1691 rc = wait_event_interruptible_timeout(card->wait_q,
1692 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1693 if (rc == -ERESTARTSYS)
1694 return rc;
1695 if (channel->state != CH_STATE_HALTED)
1696 return -ETIME;
1697 return 0;
1698}
1699
b7ea041b 1700static int qeth_stop_channel(struct qeth_channel *channel)
f9e50b02
JW		 1701{
1702 struct ccw_device *cdev = channel->ccwdev;
1703 int rc;
1704
1705 rc = ccw_device_set_offline(cdev);
1706
1707 spin_lock_irq(get_ccwdev_lock(cdev));
3518ae76 1708 if (channel->active_cmd)
f9e50b02
JW		 1709 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1710 channel->active_cmd);
3518ae76 1711
871602b1 1712 cdev->handler = NULL;
f9e50b02
JW		 1713 spin_unlock_irq(get_ccwdev_lock(cdev));
1714
1715 return rc;
1716}
f9e50b02 1717
871602b1
JW		 1718static int qeth_start_channel(struct qeth_channel *channel)
1719{
1720 struct ccw_device *cdev = channel->ccwdev;
1721 int rc;
1722
1723 channel->state = CH_STATE_DOWN;
3518ae76 1724 xchg(&channel->active_cmd, NULL);
871602b1
JW		 1725
1726 spin_lock_irq(get_ccwdev_lock(cdev));
1727 cdev->handler = qeth_irq;
1728 spin_unlock_irq(get_ccwdev_lock(cdev));
1729
1730 rc = ccw_device_set_online(cdev);
1731 if (rc)
1732 goto err;
1733
1734 return 0;
1735
1736err:
1737 spin_lock_irq(get_ccwdev_lock(cdev));
1738 cdev->handler = NULL;
1739 spin_unlock_irq(get_ccwdev_lock(cdev));
1740 return rc;
1741}
1742
4a71df50
FB		 1743static int qeth_halt_channels(struct qeth_card *card)
1744{
1745 int rc1 = 0, rc2 = 0, rc3 = 0;
1746
847a50fd 1747 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1748 rc1 = qeth_halt_channel(card, &card->read);
1749 rc2 = qeth_halt_channel(card, &card->write);
1750 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1751 if (rc1)
1752 return rc1;
1753 if (rc2)
1754 return rc2;
1755 return rc3;
1756}
1757
1758static int qeth_clear_channels(struct qeth_card *card)
1759{
1760 int rc1 = 0, rc2 = 0, rc3 = 0;
1761
847a50fd 1762 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1763 rc1 = qeth_clear_channel(card, &card->read);
1764 rc2 = qeth_clear_channel(card, &card->write);
1765 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1766 if (rc1)
1767 return rc1;
1768 if (rc2)
1769 return rc2;
1770 return rc3;
1771}
1772
1773static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1774{
1775 int rc = 0;
1776
847a50fd 1777 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1778
1779 if (halt)
1780 rc = qeth_halt_channels(card);
1781 if (rc)
1782 return rc;
1783 return qeth_clear_channels(card);
1784}
1785
f2bcf9dd 1786static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
4a71df50
FB		 1787{
1788 int rc = 0;
1789
847a50fd 1790 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1791 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1792 QETH_QDIO_CLEANING)) {
1793 case QETH_QDIO_ESTABLISHED:
379ac99e 1794 if (IS_IQD(card))
cc961d40 1795 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1796 QDIO_FLAG_CLEANUP_USING_HALT);
1797 else
cc961d40 1798 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1799 QDIO_FLAG_CLEANUP_USING_CLEAR);
1800 if (rc)
847a50fd 1801 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1802 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1803 break;
1804 case QETH_QDIO_CLEANING:
1805 return rc;
1806 default:
1807 break;
1808 }
1809 rc = qeth_clear_halt_card(card, use_halt);
1810 if (rc)
847a50fd 1811 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1812 return rc;
1813}
4a71df50 1814
615dff22
JW		 1815static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1816{
1817 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1818 struct diag26c_vnic_resp *response = NULL;
1819 struct diag26c_vnic_req *request = NULL;
1820 struct ccw_dev_id id;
1821 char userid[80];
1822 int rc = 0;
1823
57a688aa 1824 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1825
1826 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1827 if (rc)
1828 goto out;
1829
1830 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1831 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1832 if (!request || !response) {
1833 rc = -ENOMEM;
1834 goto out;
1835 }
1836
1837 ccw_device_get_id(CARD_RDEV(card), &id);
1838 request->resp_buf_len = sizeof(*response);
1839 request->resp_version = DIAG26C_VERSION6_VM65918;
1840 request->req_format = DIAG26C_VNIC_INFO;
1841 ASCEBC(userid, 8);
1842 memcpy(&request->sys_name, userid, 8);
1843 request->devno = id.devno;
1844
1845 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1846 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1847 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1848 if (rc)
1849 goto out;
1850 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1851
1852 if (request->resp_buf_len < sizeof(*response) ||
1853 response->version != request->resp_version) {
1854 rc = -EIO;
1855 goto out;
1856 }
1857
1858 if (response->protocol == VNIC_INFO_PROT_L2)
1859 disc = QETH_DISCIPLINE_LAYER2;
1860 else if (response->protocol == VNIC_INFO_PROT_L3)
1861 disc = QETH_DISCIPLINE_LAYER3;
1862
1863out:
1864 kfree(response);
1865 kfree(request);
1866 if (rc)
57a688aa 1867 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1868 return disc;
1869}
1870
c70eb09d
JW		 1871/* Determine whether the device requires a specific layer discipline */
1872static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1873{
615dff22
JW		 1874 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1875
379ac99e 1876 if (IS_OSM(card) || IS_OSN(card))
615dff22 1877 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1878 else if (IS_VM_NIC(card))
1879 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1880 qeth_vm_detect_layer(card);
615dff22
JW		 1881
1882 switch (disc) {
1883 case QETH_DISCIPLINE_LAYER2:
57a688aa 1884 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1885 break;
1886 case QETH_DISCIPLINE_LAYER3:
57a688aa 1887 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1888 break;
1889 default:
57a688aa 1890 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1891 }
1892
615dff22 1893 return disc;
c70eb09d
JW		 1894}
1895
09ac887f 1896static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1897{
57a688aa 1898 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1899
09ac887f 1900 if (card->info.use_v1_blkt) {
a60389ab
EL		 1901 card->info.blkt.time_total = 0;
1902 card->info.blkt.inter_packet = 0;
1903 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1904 } else {
1905 card->info.blkt.time_total = 250;
1906 card->info.blkt.inter_packet = 5;
1907 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1908 }
4a71df50
FB		 1909}
1910
7f23d55f 1911static void qeth_idx_init(struct qeth_card *card)
4a71df50 1912{
7f23d55f
JW		 1913 memset(&card->seqno, 0, sizeof(card->seqno));
1914
4a71df50
FB		 1915 card->token.issuer_rm_w = 0x00010103UL;
1916 card->token.cm_filter_w = 0x00010108UL;
1917 card->token.cm_connection_w = 0x0001010aUL;
1918 card->token.ulp_filter_w = 0x0001010bUL;
1919 card->token.ulp_connection_w = 0x0001010dUL;
4a71df50 1920
5113fec0
UB		 1921 switch (card->info.type) {
1922 case QETH_CARD_TYPE_IQD:
6298263a 1923 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1924 break;
1925 case QETH_CARD_TYPE_OSD:
0132951e 1926 case QETH_CARD_TYPE_OSN:
5113fec0
UB		 1927 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1928 break;
1929 default:
1930 break;
4a71df50
FB		 1931 }
1932}
1933
48ce6f89 1934static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1935 struct qeth_cmd_buffer *iob)
48ce6f89 1936{
48ce6f89
JW		 1937 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1938 QETH_SEQ_NO_LENGTH);
1939 if (iob->channel == &card->write)
1940 card->seqno.trans_hdr++;
1941}
1942
4a71df50
FB		 1943static int qeth_peer_func_level(int level)
1944{
1945 if ((level & 0xff) == 8)
1946 return (level & 0xff) + 0x400;
1947 if (((level >> 8) & 3) == 1)
1948 return (level & 0xff) + 0x200;
1949 return level;
1950}
1951
48ce6f89 1952static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1953 struct qeth_cmd_buffer *iob)
4a71df50 1954{
c3b2218d 1955 qeth_idx_finalize_cmd(card, iob);
4a71df50 1956
4a71df50
FB		 1957 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1958 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1959 card->seqno.pdu_hdr++;
1960 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1961 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1962
48ce6f89 1963 iob->callback = qeth_release_buffer_cb;
4a71df50 1964}
4a71df50 1965
7f92316c
JW		 1966static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1967 struct qeth_cmd_buffer *reply)
1968{
1969 /* MPC cmds are issued strictly in sequence. */
1970 return !IS_IPA(reply->data);
1971}
1972
f19f8fd2 1973static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
94ae20f7 1974 const void *data,
f19f8fd2 1975 unsigned int data_length)
1273a800
JW		 1976{
1977 struct qeth_cmd_buffer *iob;
1978
f19f8fd2
JW		 1979 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1980 if (!iob)
1981 return NULL;
1982
1983 memcpy(iob->data, data, data_length);
1984 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1985 iob->data);
1986 iob->finalize = qeth_mpc_finalize_cmd;
7f92316c 1987 iob->match = qeth_mpc_match_reply;
1273a800
JW		 1988 return iob;
1989}
1990
efbbc1d5
EC		 1991/**
1992 * qeth_send_control_data() - send control command to the card
1993 * @card: qeth_card structure pointer
efbbc1d5
EC		 1994 * @iob: qeth_cmd_buffer pointer
1995 * @reply_cb: callback function pointer
1996 * @cb_card: pointer to the qeth_card structure
1997 * @cb_reply: pointer to the qeth_reply structure
1998 * @cb_cmd: pointer to the original iob for non-IPA
1999 * commands, or to the qeth_ipa_cmd structure
2000 * for the IPA commands.
2001 * @reply_param: private pointer passed to the callback
2002 *
efbbc1d5
EC		 2003 * Callback function gets called one or more times, with cb_cmd
2004 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 2005 * function must return
2006 * > 0 if more reply blocks are expected,
2007 * 0 if the last or only reply block is received, and
2008 * < 0 on error.
2009 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 2010 * field 'param' of the structure qeth_reply.
2011 */
2012
c3b2218d 2013static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 2014 struct qeth_cmd_buffer *iob,
2015 int (*reply_cb)(struct qeth_card *cb_card,
2016 struct qeth_reply *cb_reply,
2017 unsigned long cb_cmd),
2018 void *reply_param)
4a71df50 2019{
750b1625 2020 struct qeth_channel *channel = iob->channel;
308946b0 2021 struct qeth_reply *reply = &iob->reply;
782e4a79 2022 long timeout = iob->timeout;
4a71df50 2023 int rc;
4a71df50 2024
847a50fd 2025 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 2026
4a71df50
FB		 2027 reply->callback = reply_cb;
2028 reply->param = reply_param;
d22ffb5a 2029
782e4a79 2030 timeout = wait_event_interruptible_timeout(card->wait_q,
3518ae76 2031 qeth_trylock_channel(channel, iob),
782e4a79
JW		 2032 timeout);
2033 if (timeout <= 0) {
c3b2218d 2034 qeth_put_cmd(iob);
782e4a79
JW		 2035 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2036 }
4a71df50 2037
2066e1db 2038 if (iob->finalize)
c3b2218d
JW		 2039 iob->finalize(card, iob);
2040 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 2041
308946b0 2042 qeth_enqueue_cmd(card, iob);
1c5b2216 2043
32e85a0d
JW		 2044 /* This pairs with iob->callback, and keeps the iob alive after IO: */
2045 qeth_get_cmd(iob);
2046
847a50fd 2047 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 2048 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 2049 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 2050 (addr_t) iob, 0, 0, timeout);
ed47155b 2051 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 2052 if (rc) {
e19e5be8
JW		 2053 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2054 CARD_DEVID(card), rc);
847a50fd 2055 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 2056 qeth_dequeue_cmd(card, iob);
c3b2218d 2057 qeth_put_cmd(iob);
7359393f 2058 qeth_unlock_channel(card, channel);
32e85a0d 2059 goto out;
4a71df50 2060 }
5b54e16f 2061
308946b0 2062 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 2063 timeout);
2064 if (timeout <= 0)
2065 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 2066
308946b0 2067 qeth_dequeue_cmd(card, iob);
072f7940
JW		 2068
2069 if (reply_cb) {
2070 /* Wait until the callback for a late reply has completed: */
308946b0 2071 spin_lock_irq(&iob->lock);
072f7940
JW		 2072 if (rc)
2073 /* Zap any callback that's still pending: */
308946b0
JW		 2074 iob->rc = rc;
2075 spin_unlock_irq(&iob->lock);
072f7940
JW		 2076 }
2077
782e4a79 2078 if (!rc)
308946b0 2079 rc = iob->rc;
32e85a0d
JW		 2080
2081out:
32e85a0d 2082 qeth_put_cmd(iob);
5b54e16f 2083 return rc;
4a71df50 2084}
4a71df50 2085
afc1f67b
JW		 2086struct qeth_node_desc {
2087 struct node_descriptor nd1;
2088 struct node_descriptor nd2;
2089 struct node_descriptor nd3;
2090};
2091
2066e1db 2092static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 2093 struct qeth_cmd_buffer *iob,
2094 unsigned int data_length)
2066e1db 2095{
afc1f67b 2096 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 2097 int rc = 0;
afc1f67b 2098 u8 *tag;
2066e1db
JW		 2099
2100 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 2101
2102 if (data_length < sizeof(*nd)) {
2103 rc = -EINVAL;
2104 goto out;
2105 }
2106
afc1f67b
JW		 2107 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2108 nd->nd1.plant[1] == _ascebc['M'];
2109 tag = (u8 *)&nd->nd1.tag;
2110 card->info.chpid = tag[0];
2111 card->info.unit_addr2 = tag[1];
2112
2113 tag = (u8 *)&nd->nd2.tag;
2114 card->info.cula = tag[1];
2115
2116 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2117 nd->nd3.model[1] == 0xF0 &&
2118 nd->nd3.model[2] >= 0xF1 &&
2119 nd->nd3.model[2] <= 0xF4;
2066e1db 2120
12fc286f 2121out:
308946b0 2122 qeth_notify_cmd(iob, rc);
c3b2218d 2123 qeth_put_cmd(iob);
2066e1db
JW		 2124}
2125
2126static int qeth_read_conf_data(struct qeth_card *card)
2127{
2128 struct qeth_channel *channel = &card->data;
2129 struct qeth_cmd_buffer *iob;
2130 struct ciw *ciw;
2131
2132 /* scan for RCD command in extended SenseID data */
2133 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2134 if (!ciw || ciw->cmd == 0)
2135 return -EOPNOTSUPP;
afc1f67b
JW		 2136 if (ciw->count < sizeof(struct qeth_node_desc))
2137 return -EINVAL;
2066e1db
JW		 2138
2139 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2140 if (!iob)
2141 return -ENOMEM;
2142
2143 iob->callback = qeth_read_conf_data_cb;
2144 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2145 iob->data);
2146
c3b2218d 2147 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 2148}
2149
2e873d10
JW		 2150static int qeth_idx_check_activate_response(struct qeth_card *card,
2151 struct qeth_channel *channel,
2152 struct qeth_cmd_buffer *iob)
2153{
2154 int rc;
2155
2156 rc = qeth_check_idx_response(card, iob->data);
2157 if (rc)
2158 return rc;
2159
2160 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2161 return 0;
2162
2163 /* negative reply: */
57a688aa
JW		 2164 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2165 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 2166
2167 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2168 case QETH_IDX_ACT_ERR_EXCL:
2169 dev_err(&channel->ccwdev->dev,
2170 "The adapter is used exclusively by another host\n");
2171 return -EBUSY;
2172 case QETH_IDX_ACT_ERR_AUTH:
2173 case QETH_IDX_ACT_ERR_AUTH_USER:
2174 dev_err(&channel->ccwdev->dev,
2175 "Setting the device online failed because of insufficient authorization\n");
2176 return -EPERM;
2177 default:
2178 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2179 CCW_DEVID(channel->ccwdev));
2180 return -EIO;
2181 }
2182}
2183
f3b783b1 2184static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
12fc286f
JW		 2185 struct qeth_cmd_buffer *iob,
2186 unsigned int data_length)
2e873d10 2187{
fcda7f73 2188 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2189 u16 peer_level;
2190 int rc;
2191
57a688aa 2192 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 2193
2194 rc = qeth_idx_check_activate_response(card, channel, iob);
2195 if (rc)
2196 goto out;
2197
2198 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2199 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2200 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2201 CCW_DEVID(channel->ccwdev),
2202 card->info.func_level, peer_level);
2203 rc = -EINVAL;
2204 goto out;
2205 }
2206
2207 memcpy(&card->token.issuer_rm_r,
2208 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2209 QETH_MPC_TOKEN_LENGTH);
2210 memcpy(&card->info.mcl_level[0],
2211 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2212
2213out:
308946b0 2214 qeth_notify_cmd(iob, rc);
c3b2218d 2215 qeth_put_cmd(iob);
2e873d10
JW		 2216}
2217
f3b783b1 2218static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 2219 struct qeth_cmd_buffer *iob,
2220 unsigned int data_length)
2e873d10 2221{
fcda7f73 2222 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2223 u16 peer_level;
2224 int rc;
2225
57a688aa 2226 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 2227
2228 rc = qeth_idx_check_activate_response(card, channel, iob);
2229 if (rc)
2230 goto out;
2231
2232 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2233 if ((peer_level & ~0x0100) !=
2234 qeth_peer_func_level(card->info.func_level)) {
2235 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2236 CCW_DEVID(channel->ccwdev),
2237 card->info.func_level, peer_level);
2238 rc = -EINVAL;
2239 }
2240
2241out:
308946b0 2242 qeth_notify_cmd(iob, rc);
c3b2218d 2243 qeth_put_cmd(iob);
2e873d10
JW		 2244}
2245
2e873d10
JW		 2246static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2247 struct qeth_cmd_buffer *iob)
2248{
2249 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2250 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 2251 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10 2252
f3b783b1
JW		 2253 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2254 iob->data);
2255 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10 2256 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 2257
5fd3fcbb 2258 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 2259 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2260 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2261 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2262 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2263 &card->info.func_level, 2);
fa115adf 2264 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2e873d10
JW		 2265 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2266}
2267
2268static int qeth_idx_activate_read_channel(struct qeth_card *card)
2269{
2270 struct qeth_channel *channel = &card->read;
2271 struct qeth_cmd_buffer *iob;
2272 int rc;
2273
57a688aa 2274 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2275
f3b783b1 2276 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2277 if (!iob)
2278 return -ENOMEM;
2279
2280 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2281 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2282 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 2283
c3b2218d 2284 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2285 if (rc)
2286 return rc;
2287
2e873d10
JW		 2288 channel->state = CH_STATE_UP;
2289 return 0;
2290}
2291
2292static int qeth_idx_activate_write_channel(struct qeth_card *card)
2293{
2294 struct qeth_channel *channel = &card->write;
2295 struct qeth_cmd_buffer *iob;
2296 int rc;
2297
57a688aa 2298 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2299
f3b783b1 2300 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2301 if (!iob)
2302 return -ENOMEM;
2303
2304 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2305 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2306 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2307
c3b2218d 2308 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2309 if (rc)
2310 return rc;
2311
2e873d10
JW		 2312 channel->state = CH_STATE_UP;
2313 return 0;
2314}
2315
4a71df50
FB		 2316static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2317 unsigned long data)
2318{
2319 struct qeth_cmd_buffer *iob;
2320
57a688aa 2321 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2322
2323 iob = (struct qeth_cmd_buffer *) data;
2324 memcpy(&card->token.cm_filter_r,
2325 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2326 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2327 return 0;
2328}
2329
2330static int qeth_cm_enable(struct qeth_card *card)
2331{
4a71df50
FB		 2332 struct qeth_cmd_buffer *iob;
2333
57a688aa 2334 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2335
f19f8fd2 2336 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2337 if (!iob)
2338 return -ENOMEM;
48ce6f89 2339
4a71df50
FB		 2340 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2341 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2342 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2343 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2344
c3b2218d 2345 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2346}
2347
2348static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2349 unsigned long data)
2350{
4a71df50
FB		 2351 struct qeth_cmd_buffer *iob;
2352
57a688aa 2353 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2354
2355 iob = (struct qeth_cmd_buffer *) data;
2356 memcpy(&card->token.cm_connection_r,
2357 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2358 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2359 return 0;
2360}
2361
2362static int qeth_cm_setup(struct qeth_card *card)
2363{
4a71df50
FB		 2364 struct qeth_cmd_buffer *iob;
2365
57a688aa 2366 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2367
f19f8fd2 2368 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2369 if (!iob)
2370 return -ENOMEM;
48ce6f89 2371
4a71df50
FB		 2372 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2373 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2374 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2375 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2376 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2377 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2378 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2379}
2380
101e314d
JW		 2381static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2382{
2383 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2384 link_type == QETH_LINK_TYPE_HSTR) {
2385 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2386 return false;
2387 }
2388
2389 return true;
2390}
2391
8ce7a9e0 2392static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2393{
8ce7a9e0
JW		 2394 struct net_device *dev = card->dev;
2395 unsigned int new_mtu;
2396
2397 if (!max_mtu) {
2398 /* IQD needs accurate max MTU to set up its RX buffers: */
2399 if (IS_IQD(card))
2400 return -EINVAL;
2401 /* tolerate quirky HW: */
2402 max_mtu = ETH_MAX_MTU;
2403 }
2404
2405 rtnl_lock();
2406 if (IS_IQD(card)) {
2407 /* move any device with default MTU to new max MTU: */
2408 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2409
2410 /* adjust RX buffer size to new max MTU: */
2411 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2412 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2413 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2414 } else {
2415 if (dev->mtu)
2416 new_mtu = dev->mtu;
2417 /* default MTUs for first setup: */
4fda3354 2418 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2419 new_mtu = ETH_DATA_LEN;
2420 else
2421 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2422 }
8ce7a9e0
JW		 2423
2424 dev->max_mtu = max_mtu;
2425 dev->mtu = min(new_mtu, max_mtu);
2426 rtnl_unlock();
2427 return 0;
4a71df50
FB		 2428}
2429
cef6ff22 2430static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2431{
2432 switch (framesize) {
2433 case 0x4000:
2434 return 8192;
2435 case 0x6000:
2436 return 16384;
2437 case 0xa000:
2438 return 32768;
2439 case 0xffff:
2440 return 57344;
2441 default:
2442 return 0;
2443 }
2444}
2445
4a71df50
FB		 2446static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2447 unsigned long data)
2448{
4a71df50
FB		 2449 __u16 mtu, framesize;
2450 __u16 len;
4a71df50 2451 struct qeth_cmd_buffer *iob;
101e314d 2452 u8 link_type = 0;
4a71df50 2453
57a688aa 2454 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2455
2456 iob = (struct qeth_cmd_buffer *) data;
2457 memcpy(&card->token.ulp_filter_r,
2458 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2459 QETH_MPC_TOKEN_LENGTH);
379ac99e 2460 if (IS_IQD(card)) {
4a71df50
FB		 2461 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2462 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2463 } else {
8ce7a9e0 2464 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2465 }
8ce7a9e0 2466 *(u16 *)reply->param = mtu;
4a71df50
FB		 2467
2468 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2469 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2470 memcpy(&link_type,
2471 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
101e314d
JW		 2472 if (!qeth_is_supported_link_type(card, link_type))
2473 return -EPROTONOSUPPORT;
2474 }
2475
2476 card->info.link_type = link_type;
57a688aa 2477 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2478 return 0;
2479}
2480
73657a3e
JW		 2481static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2482{
2483 if (IS_OSN(card))
2484 return QETH_PROT_OSN2;
4fda3354 2485 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
73657a3e
JW		 2486}
2487
4a71df50
FB		 2488static int qeth_ulp_enable(struct qeth_card *card)
2489{
73657a3e 2490 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2491 struct qeth_cmd_buffer *iob;
8ce7a9e0 2492 u16 max_mtu;
73657a3e 2493 int rc;
4a71df50 2494
57a688aa 2495 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2496
f19f8fd2 2497 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2498 if (!iob)
2499 return -ENOMEM;
4a71df50 2500
92d27209 2501 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2502 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2503 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2504 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2505 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2506 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2507 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2508 if (rc)
2509 return rc;
2510 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2511}
2512
2513static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2514 unsigned long data)
2515{
2516 struct qeth_cmd_buffer *iob;
2517
57a688aa 2518 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2519
2520 iob = (struct qeth_cmd_buffer *) data;
2521 memcpy(&card->token.ulp_connection_r,
2522 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2523 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2524 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2525 3)) {
57a688aa 2526 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2527 dev_err(&card->gdev->dev, "A connection could not be "
2528 "established because of an OLM limit\n");
4b7ae122 2529 return -EMLINK;
65a1f898 2530 }
7bf9bcff 2531 return 0;
4a71df50
FB		 2532}
2533
2534static int qeth_ulp_setup(struct qeth_card *card)
2535{
4a71df50
FB		 2536 __u16 temp;
2537 struct qeth_cmd_buffer *iob;
4a71df50 2538
57a688aa 2539 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2540
f19f8fd2 2541 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2542 if (!iob)
2543 return -ENOMEM;
4a71df50
FB		 2544
2545 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2546 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2547 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2548 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2549 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2550 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2551
fa115adf 2552 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
4a71df50
FB		 2553 temp = (card->info.cula << 8) + card->info.unit_addr2;
2554 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2555 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2556}
2557
e47ded97
JW		 2558static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2559 gfp_t gfp)
0da9581d 2560{
0da9581d
EL		 2561 struct qeth_qdio_out_buffer *newbuf;
2562
e47ded97 2563 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
3b346c18
JW		 2564 if (!newbuf)
2565 return -ENOMEM;
2566
d445a4e2 2567 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2568 skb_queue_head_init(&newbuf->skb_list);
2569 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2570 newbuf->q = q;
0da9581d
EL		 2571 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2572 q->bufs[bidx] = newbuf;
3b346c18 2573 return 0;
0da9581d
EL		 2574}
2575
afa0c590 2576static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2577{
2578 if (!q)
2579 return;
2580
41c47da3 2581 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2582 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2583 kfree(q);
2584}
2585
41c47da3 2586static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2587{
2588 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
e7a36d27 2589 unsigned int i;
d445a4e2
SO		 2590
2591 if (!q)
2592 return NULL;
2593
e7a36d27
JW		 2594 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2595 goto err_qdio_bufs;
2596
2597 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
e47ded97 2598 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
e7a36d27 2599 goto err_out_bufs;
d445a4e2 2600 }
e7a36d27 2601
d445a4e2 2602 return q;
e7a36d27
JW		 2603
2604err_out_bufs:
2605 while (i > 0)
396c1004 2606 qeth_free_out_buf(q->bufs[--i]);
e7a36d27
JW		 2607 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2608err_qdio_bufs:
2609 kfree(q);
2610 return NULL;
d445a4e2 2611}
0da9581d 2612
e53edf74
JW		 2613static void qeth_tx_completion_timer(struct timer_list *timer)
2614{
2615 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2616
2617 napi_schedule(&queue->napi);
2618 QETH_TXQ_STAT_INC(queue, completion_timer);
2619}
2620
41c47da3 2621static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50 2622{
e7a36d27 2623 unsigned int i;
4a71df50 2624
57a688aa 2625 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2626
2627 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2628 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2629 return 0;
2630
57a688aa 2631 QETH_CARD_TEXT(card, 2, "inq");
4601ba6c 2632 card->qdio.in_q = qeth_alloc_qdio_queue();
4a71df50
FB		 2633 if (!card->qdio.in_q)
2634 goto out_nomem;
4601ba6c 2635
4a71df50
FB		 2636 /* inbound buffer pool */
2637 if (qeth_alloc_buffer_pool(card))
2638 goto out_freeinq;
0da9581d 2639
4a71df50 2640 /* outbound */
4a71df50 2641 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2642 struct qeth_qdio_out_q *queue;
2643
2644 queue = qeth_alloc_output_queue();
2645 if (!queue)
4a71df50 2646 goto out_freeoutq;
57a688aa 2647 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2648 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2649 card->qdio.out_qs[i] = queue;
2650 queue->card = card;
2651 queue->queue_no = i;
c20383ad 2652 INIT_LIST_HEAD(&queue->pending_bufs);
a1668474 2653 spin_lock_init(&queue->lock);
e53edf74 2654 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
7a4b92e8
JW		 2655 if (IS_IQD(card)) {
2656 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2657 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2658 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2659 } else {
2660 queue->coalesce_usecs = USEC_PER_SEC;
2661 queue->max_coalesced_frames = 0;
2662 queue->rescan_usecs = 10 * USEC_PER_SEC;
2663 }
949bbf4d 2664 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
4a71df50 2665 }
0da9581d
EL		 2666
2667 /* completion */
2668 if (qeth_alloc_cq(card))
2669 goto out_freeoutq;
2670
4a71df50
FB		 2671 return 0;
2672
2673out_freeoutq:
bb92d3f8 2674 while (i > 0) {
afa0c590 2675 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2676 card->qdio.out_qs[i] = NULL;
2677 }
4a71df50
FB		 2678 qeth_free_buffer_pool(card);
2679out_freeinq:
4601ba6c 2680 qeth_free_qdio_queue(card->qdio.in_q);
4a71df50
FB		 2681 card->qdio.in_q = NULL;
2682out_nomem:
2683 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2684 return -ENOMEM;
2685}
2686
41c47da3 2687static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2688{
2689 int i, j;
2690
2691 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2692 QETH_QDIO_UNINITIALIZED)
2693 return;
2694
2695 qeth_free_cq(card);
d445a4e2
SO		 2696 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2697 if (card->qdio.in_q->bufs[j].rx_skb)
2698 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2699 }
2700 qeth_free_qdio_queue(card->qdio.in_q);
2701 card->qdio.in_q = NULL;
2702 /* inbound buffer pool */
2703 qeth_free_buffer_pool(card);
2704 /* free outbound qdio_qs */
bb92d3f8
JW		 2705 for (i = 0; i < card->qdio.no_out_queues; i++) {
2706 qeth_free_output_queue(card->qdio.out_qs[i]);
2707 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2708 }
2709}
2710
72d5e850
JW		 2711static void qeth_fill_qib_parms(struct qeth_card *card,
2712 struct qeth_qib_parms *parms)
2713{
949bbf4d
JW		 2714 struct qeth_qdio_out_q *queue;
2715 unsigned int i;
2716
72d5e850
JW		 2717 parms->pcit_magic[0] = 'P';
2718 parms->pcit_magic[1] = 'C';
2719 parms->pcit_magic[2] = 'I';
2720 parms->pcit_magic[3] = 'T';
2721 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2722 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2723 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2724 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2725
2726 parms->blkt_magic[0] = 'B';
2727 parms->blkt_magic[1] = 'L';
2728 parms->blkt_magic[2] = 'K';
2729 parms->blkt_magic[3] = 'T';
2730 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2731 parms->blkt_total = card->info.blkt.time_total;
2732 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2733 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
949bbf4d
JW		 2734
2735 /* Prio-queueing implicitly uses the default priorities: */
2736 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2737 return;
2738
2739 parms->pque_magic[0] = 'P';
2740 parms->pque_magic[1] = 'Q';
2741 parms->pque_magic[2] = 'U';
2742 parms->pque_magic[3] = 'E';
2743 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2744 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2745 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2746
2747 qeth_for_each_output_queue(card, queue, i)
2748 parms->pque_priority[i] = queue->priority;
4a71df50
FB		 2749}
2750
2751static int qeth_qdio_activate(struct qeth_card *card)
2752{
57a688aa 2753 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2754 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2755}
2756
2757static int qeth_dm_act(struct qeth_card *card)
2758{
4a71df50
FB		 2759 struct qeth_cmd_buffer *iob;
2760
57a688aa 2761 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2762
f19f8fd2 2763 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2764 if (!iob)
2765 return -ENOMEM;
4a71df50
FB		 2766
2767 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2768 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2769 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2770 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2771 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2772}
2773
2774static int qeth_mpc_initialize(struct qeth_card *card)
2775{
2776 int rc;
2777
57a688aa 2778 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2779
2780 rc = qeth_issue_next_read(card);
2781 if (rc) {
57a688aa 2782 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2783 return rc;
2784 }
2785 rc = qeth_cm_enable(card);
2786 if (rc) {
57a688aa 2787 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
8b5026bc 2788 return rc;
4a71df50
FB		 2789 }
2790 rc = qeth_cm_setup(card);
2791 if (rc) {
57a688aa 2792 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
8b5026bc 2793 return rc;
4a71df50
FB		 2794 }
2795 rc = qeth_ulp_enable(card);
2796 if (rc) {
57a688aa 2797 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
8b5026bc 2798 return rc;
4a71df50
FB		 2799 }
2800 rc = qeth_ulp_setup(card);
2801 if (rc) {
57a688aa 2802 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2803 return rc;
4a71df50 2804 }
41c47da3 2805 rc = qeth_alloc_qdio_queues(card);
4a71df50 2806 if (rc) {
57a688aa 2807 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2808 return rc;
4a71df50
FB		 2809 }
2810 rc = qeth_qdio_establish(card);
2811 if (rc) {
57a688aa 2812 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2813 qeth_free_qdio_queues(card);
8b5026bc 2814 return rc;
4a71df50
FB		 2815 }
2816 rc = qeth_qdio_activate(card);
2817 if (rc) {
57a688aa 2818 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
8b5026bc 2819 return rc;
4a71df50
FB		 2820 }
2821 rc = qeth_dm_act(card);
2822 if (rc) {
57a688aa 2823 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
8b5026bc 2824 return rc;
4a71df50
FB		 2825 }
2826
2827 return 0;
4a71df50
FB		 2828}
2829
b7ea041b 2830static void qeth_print_status_message(struct qeth_card *card)
4a71df50
FB		 2831{
2832 switch (card->info.type) {
5113fec0
UB		 2833 case QETH_CARD_TYPE_OSD:
2834 case QETH_CARD_TYPE_OSM:
2835 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2836 /* VM will use a non-zero first character
2837 * to indicate a HiperSockets like reporting
2838 * of the level OSA sets the first character to zero
2839 * */
2840 if (!card->info.mcl_level[0]) {
2841 sprintf(card->info.mcl_level, "%02x%02x",
2842 card->info.mcl_level[2],
2843 card->info.mcl_level[3]);
4a71df50
FB		 2844 break;
2845 }
df561f66 2846 fallthrough;
4a71df50 2847 case QETH_CARD_TYPE_IQD:
379ac99e 2848 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2849 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2850 card->info.mcl_level[0]];
2851 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2852 card->info.mcl_level[1]];
2853 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2854 card->info.mcl_level[2]];
2855 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2856 card->info.mcl_level[3]];
2857 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2858 }
2859 break;
2860 default:
2861 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2862 }
239ff408
UB		 2863 dev_info(&card->gdev->dev,
2864 "Device is a%s card%s%s%s\nwith link type %s.\n",
2865 qeth_get_cardname(card),
2866 (card->info.mcl_level[0]) ? " (level: " : "",
2867 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2868 (card->info.mcl_level[0]) ? ")" : "",
2869 qeth_get_cardname_short(card));
4a71df50 2870}
4a71df50 2871
4a71df50
FB		 2872static void qeth_initialize_working_pool_list(struct qeth_card *card)
2873{
2874 struct qeth_buffer_pool_entry *entry;
2875
847a50fd 2876 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2877
2878 list_for_each_entry(entry,
2879 &card->qdio.init_pool.entry_list, init_list) {
2880 qeth_put_buffer_pool_entry(card, entry);
2881 }
2882}
2883
cef6ff22
JW		 2884static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2885 struct qeth_card *card)
4a71df50 2886{
4a71df50
FB		 2887 struct qeth_buffer_pool_entry *entry;
2888 int i, free;
4a71df50
FB		 2889
2890 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2891 return NULL;
2892
bb59c8a8 2893 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
4a71df50
FB		 2894 free = 1;
2895 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2896 if (page_count(entry->elements[i]) > 1) {
4a71df50
FB		 2897 free = 0;
2898 break;
2899 }
2900 }
2901 if (free) {
2902 list_del_init(&entry->list);
2903 return entry;
2904 }
2905 }
2906
2907 /* no free buffer in pool so take first one and swap pages */
bb59c8a8
JW		 2908 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2909 struct qeth_buffer_pool_entry, list);
4a71df50 2910 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2911 if (page_count(entry->elements[i]) > 1) {
714c9108 2912 struct page *page = dev_alloc_page();
f81649df
JW		 2913
2914 if (!page)
4a71df50 2915 return NULL;
f81649df
JW		 2916
2917 __free_page(entry->elements[i]);
2918 entry->elements[i] = page;
2919 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2920 }
2921 }
2922 list_del_init(&entry->list);
2923 return entry;
2924}
2925
2926static int qeth_init_input_buffer(struct qeth_card *card,
2927 struct qeth_qdio_buffer *buf)
2928{
eff73e16 2929 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
4a71df50
FB		 2930 int i;
2931
b3332930 2932 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2 2933 buf->rx_skb = netdev_alloc_skb(card->dev,
8ca8559f
JW		 2934 ETH_HLEN +
2935 sizeof(struct ipv6hdr));
b3332930 2936 if (!buf->rx_skb)
17413852 2937 return -ENOMEM;
b3332930
FB		 2938 }
2939
eff73e16
JW		 2940 if (!pool_entry) {
2941 pool_entry = qeth_find_free_buffer_pool_entry(card);
2942 if (!pool_entry)
2943 return -ENOBUFS;
2944
2945 buf->pool_entry = pool_entry;
2946 }
4a71df50
FB		 2947
2948 /*
2949 * since the buffer is accessed only from the input_tasklet
2950 * there shouldn't be a need to synchronize; also, since we use
2951 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2952 * buffers
2953 */
4a71df50
FB		 2954 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2955 buf->buffer->element[i].length = PAGE_SIZE;
2db01da8 2956 buf->buffer->element[i].addr =
f81649df 2957 page_to_phys(pool_entry->elements[i]);
4a71df50 2958 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2959 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2960 else
3ec90878
JG		 2961 buf->buffer->element[i].eflags = 0;
2962 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2963 }
2964 return 0;
2965}
2966
8b664cd1
JW		 2967static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2968 struct qeth_qdio_out_q *queue)
2969{
2970 if (!IS_IQD(card) ||
2971 qeth_iqd_is_mcast_queue(card, queue) ||
2972 card->options.cq == QETH_CQ_ENABLED ||
2973 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2974 return 1;
2975
2976 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2977}
2978
aa3ad392 2979static int qeth_init_qdio_queues(struct qeth_card *card)
4a71df50 2980{
9e7d92e0 2981 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
7b579ce5 2982 unsigned int i;
4a71df50
FB		 2983 int rc;
2984
57a688aa 2985 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2986
2987 /* inbound queue */
1b45c80b
JW		 2988 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2989 memset(&card->rx, 0, sizeof(struct qeth_rx));
17413852 2990
4a71df50
FB		 2991 qeth_initialize_working_pool_list(card);
2992 /*give only as many buffers to hardware as we have buffer pool entries*/
9e7d92e0 2993 for (i = 0; i < rx_bufs; i++) {
17413852
JW		 2994 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2995 if (rc)
2996 return rc;
2997 }
2998
9e7d92e0 2999 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
396c1004
JW		 3000 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, rx_bufs,
3001 NULL);
4a71df50 3002 if (rc) {
57a688aa 3003 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 3004 return rc;
3005 }
0da9581d
EL		 3006
3007 /* completion */
3008 rc = qeth_cq_init(card);
3009 if (rc) {
3010 return rc;
3011 }
3012
4a71df50
FB		 3013 /* outbound queue */
3014 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 3015 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
3016
3017 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
3018 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3019 queue->next_buf_to_fill = 0;
3020 queue->do_pack = 0;
9549d70a 3021 queue->prev_hdr = NULL;
ee1e52d1 3022 queue->coalesced_frames = 0;
9549d70a 3023 queue->bulk_start = 0;
8b664cd1
JW		 3024 queue->bulk_count = 0;
3025 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
4e26c5fe
JW		 3026 atomic_set(&queue->used_buffers, 0);
3027 atomic_set(&queue->set_pci_flags_count, 0);
96bd6c94 3028 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
4a71df50
FB		 3029 }
3030 return 0;
3031}
4a71df50 3032
48ce6f89 3033static void qeth_ipa_finalize_cmd(struct qeth_card *card,
c3b2218d 3034 struct qeth_cmd_buffer *iob)
48ce6f89 3035{
c3b2218d 3036 qeth_mpc_finalize_cmd(card, iob);
48ce6f89
JW		 3037
3038 /* override with IPA-specific values: */
308946b0 3039 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
48ce6f89
JW		 3040}
3041
c2153277 3042void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
7f92316c
JW		 3043 u16 cmd_length,
3044 bool (*match)(struct qeth_cmd_buffer *iob,
3045 struct qeth_cmd_buffer *reply))
605c9d5f
JW		 3046{
3047 u8 prot_type = qeth_mpc_select_prot_type(card);
c3b2218d 3048 u16 total_length = iob->length;
605c9d5f 3049
f19f8fd2
JW		 3050 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3051 iob->data);
48ce6f89 3052 iob->finalize = qeth_ipa_finalize_cmd;
7f92316c 3053 iob->match = match;
782e4a79 3054
605c9d5f 3055 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 3056 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 3057 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 3058 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3059 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 3060 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3061 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 3062 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f
JW		 3063}
3064EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
3065
7f92316c
JW		 3066static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3067 struct qeth_cmd_buffer *reply)
3068{
3069 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3070
3071 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3072}
3073
a59d121d
JW		 3074struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3075 enum qeth_ipa_cmds cmd_code,
3076 enum qeth_prot_versions prot,
3077 unsigned int data_length)
3078{
3079 struct qeth_cmd_buffer *iob;
c3b2218d 3080 struct qeth_ipacmd_hdr *hdr;
a59d121d
JW		 3081
3082 data_length += offsetof(struct qeth_ipa_cmd, data);
3083 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3084 QETH_IPA_TIMEOUT);
3085 if (!iob)
3086 return NULL;
3087
7f92316c 3088 qeth_prepare_ipa_cmd(card, iob, data_length, qeth_ipa_match_reply);
c3b2218d
JW		 3089
3090 hdr = &__ipa_cmd(iob)->hdr;
3091 hdr->command = cmd_code;
3092 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3093 /* hdr->seqno is set by qeth_send_control_data() */
101e314d 3094 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
c3b2218d
JW		 3095 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3096 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3097 hdr->param_count = 1;
3098 hdr->prot_version = prot;
a59d121d
JW		 3099 return iob;
3100}
3101EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3102
742d4d40
JW		 3103static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3104 struct qeth_reply *reply, unsigned long data)
3105{
3106 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3107
3108 return (cmd->hdr.return_code) ? -EIO : 0;
3109}
3110
efbbc1d5
EC		 3111/**
3112 * qeth_send_ipa_cmd() - send an IPA command
3113 *
3114 * See qeth_send_control_data() for explanation of the arguments.
3115 */
3116
4a71df50
FB		 3117int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3118 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3119 unsigned long),
3120 void *reply_param)
3121{
3122 int rc;
4a71df50 3123
847a50fd 3124 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 3125
2e873d10 3126 if (card->read_or_write_problem) {
c3b2218d 3127 qeth_put_cmd(iob);
2e873d10
JW		 3128 return -EIO;
3129 }
3130
742d4d40
JW		 3131 if (reply_cb == NULL)
3132 reply_cb = qeth_send_ipa_cmd_cb;
c3b2218d 3133 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
908abbb5
UB		 3134 if (rc == -ETIME) {
3135 qeth_clear_ipacmd_list(card);
3136 qeth_schedule_recovery(card);
3137 }
4a71df50
FB		 3138 return rc;
3139}
3140EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3141
4b7ae122
JW		 3142static int qeth_send_startlan_cb(struct qeth_card *card,
3143 struct qeth_reply *reply, unsigned long data)
3144{
3145 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3146
3147 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3148 return -ENETDOWN;
3149
3150 return (cmd->hdr.return_code) ? -EIO : 0;
3151}
3152
10340510 3153static int qeth_send_startlan(struct qeth_card *card)
4a71df50 3154{
70919e23 3155 struct qeth_cmd_buffer *iob;
4a71df50 3156
57a688aa 3157 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 3158
a59d121d 3159 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 3160 if (!iob)
3161 return -ENOMEM;
4b7ae122 3162 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 3163}
4a71df50 3164
686c97ee 3165static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 3166{
686c97ee 3167 if (!cmd->hdr.return_code)
4a71df50
FB		 3168 cmd->hdr.return_code =
3169 cmd->data.setadapterparms.hdr.return_code;
686c97ee 3170 return cmd->hdr.return_code;
4a71df50 3171}
4a71df50
FB		 3172
3173static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3174 struct qeth_reply *reply, unsigned long data)
3175{
686c97ee 3176 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
101e314d 3177 struct qeth_query_cmds_supp *query_cmd;
4a71df50 3178
847a50fd 3179 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 3180 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3181 return -EIO;
4a71df50 3182
101e314d
JW		 3183 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3184 if (query_cmd->lan_type & 0x7f) {
3185 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3186 return -EPROTONOSUPPORT;
3187
3188 card->info.link_type = query_cmd->lan_type;
57a688aa 3189 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 3190 }
101e314d
JW		 3191
3192 card->options.adp.supported = query_cmd->supported_cmds;
686c97ee 3193 return 0;
4a71df50
FB		 3194}
3195
eb3fb0ba 3196static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 3197 enum qeth_ipa_setadp_cmd adp_cmd,
3198 unsigned int data_length)
4a71df50 3199{
b9150461 3200 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 3201 struct qeth_cmd_buffer *iob;
4a71df50 3202
b9150461
JW		 3203 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3204 data_length +
3205 offsetof(struct qeth_ipacmd_setadpparms,
3206 data));
3207 if (!iob)
3208 return NULL;
4a71df50 3209
b9150461
JW		 3210 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3211 hdr->cmdlength = sizeof(*hdr) + data_length;
3212 hdr->command_code = adp_cmd;
3213 hdr->used_total = 1;
3214 hdr->seq_no = 1;
4a71df50
FB		 3215 return iob;
3216}
4a71df50 3217
09960b3a 3218static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 3219{
3220 int rc;
3221 struct qeth_cmd_buffer *iob;
3222
847a50fd 3223 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 3224 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 3225 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 3226 if (!iob)
3227 return -ENOMEM;
4a71df50
FB		 3228 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3229 return rc;
3230}
4a71df50 3231
1da74b1c
FB		 3232static int qeth_query_ipassists_cb(struct qeth_card *card,
3233 struct qeth_reply *reply, unsigned long data)
3234{
3235 struct qeth_ipa_cmd *cmd;
3236
57a688aa 3237 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 3238
3239 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 3240
3241 switch (cmd->hdr.return_code) {
742d4d40
JW		 3242 case IPA_RC_SUCCESS:
3243 break;
a134884a
SR		 3244 case IPA_RC_NOTSUPP:
3245 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 3246 QETH_CARD_TEXT(card, 2, "ipaunsup");
52f82bf1
JW		 3247 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3248 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
742d4d40 3249 return -EOPNOTSUPP;
a134884a 3250 default:
742d4d40
JW		 3251 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3252 CARD_DEVID(card), cmd->hdr.return_code);
3253 return -EIO;
a134884a
SR		 3254 }
3255
52f82bf1
JW		 3256 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3257 card->options.ipa4 = cmd->hdr.assists;
3258 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3259 card->options.ipa6 = cmd->hdr.assists;
3260 else
e19e5be8
JW		 3261 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3262 CARD_DEVID(card));
1da74b1c
FB		 3263 return 0;
3264}
3265
09960b3a
JW		 3266static int qeth_query_ipassists(struct qeth_card *card,
3267 enum qeth_prot_versions prot)
1da74b1c
FB		 3268{
3269 int rc;
3270 struct qeth_cmd_buffer *iob;
3271
57a688aa 3272 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 3273 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 3274 if (!iob)
3275 return -ENOMEM;
1da74b1c
FB		 3276 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3277 return rc;
3278}
1da74b1c 3279
45cbb2e4
SR		 3280static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3281 struct qeth_reply *reply, unsigned long data)
3282{
686c97ee 3283 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 3284 struct qeth_query_switch_attributes *attrs;
686c97ee 3285 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 3286
3287 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 3288 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3289 return -EIO;
45cbb2e4 3290
686c97ee
JW		 3291 sw_info = (struct qeth_switch_info *)reply->param;
3292 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3293 sw_info->capabilities = attrs->capabilities;
3294 sw_info->settings = attrs->settings;
3295 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3296 sw_info->settings);
45cbb2e4
SR		 3297 return 0;
3298}
3299
3300int qeth_query_switch_attributes(struct qeth_card *card,
3301 struct qeth_switch_info *sw_info)
3302{
3303 struct qeth_cmd_buffer *iob;
3304
3305 QETH_CARD_TEXT(card, 2, "qswiattr");
3306 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3307 return -EOPNOTSUPP;
3308 if (!netif_carrier_ok(card->dev))
3309 return -ENOMEDIUM;
b9150461 3310 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 3311 if (!iob)
3312 return -ENOMEM;
45cbb2e4
SR		 3313 return qeth_send_ipa_cmd(card, iob,
3314 qeth_query_switch_attributes_cb, sw_info);
3315}
45cbb2e4 3316
5cfbe10a
JW		 3317struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3318 enum qeth_diags_cmds sub_cmd,
3319 unsigned int data_length)
3320{
3321 struct qeth_ipacmd_diagass *cmd;
3322 struct qeth_cmd_buffer *iob;
3323
3324 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3325 DIAG_HDR_LEN + data_length);
3326 if (!iob)
3327 return NULL;
3328
3329 cmd = &__ipa_cmd(iob)->data.diagass;
3330 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3331 cmd->subcmd = sub_cmd;
3332 return iob;
3333}
3334EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3335
1da74b1c
FB		 3336static int qeth_query_setdiagass_cb(struct qeth_card *card,
3337 struct qeth_reply *reply, unsigned long data)
3338{
742d4d40
JW		 3339 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3340 u16 rc = cmd->hdr.return_code;
1da74b1c 3341
742d4d40 3342 if (rc) {
1da74b1c 3343 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 3344 return -EIO;
3345 }
3346
3347 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3348 return 0;
3349}
3350
3351static int qeth_query_setdiagass(struct qeth_card *card)
3352{
3353 struct qeth_cmd_buffer *iob;
1da74b1c 3354
57a688aa 3355 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3356 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3357 if (!iob)
3358 return -ENOMEM;
1da74b1c
FB		 3359 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3360}
3361
3362static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3363{
3364 unsigned long info = get_zeroed_page(GFP_KERNEL);
3365 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3366 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3367 struct ccw_dev_id ccwid;
caf757c6 3368 int level;
1da74b1c
FB		 3369
3370 tid->chpid = card->info.chpid;
3371 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3372 tid->ssid = ccwid.ssid;
3373 tid->devno = ccwid.devno;
3374 if (!info)
3375 return;
caf757c6
HC		 3376 level = stsi(NULL, 0, 0, 0);
3377 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3378 tid->lparnr = info222->lpar_number;
caf757c6 3379 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3380 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3381 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3382 }
3383 free_page(info);
1da74b1c
FB		 3384}
3385
3386static int qeth_hw_trap_cb(struct qeth_card *card,
3387 struct qeth_reply *reply, unsigned long data)
3388{
742d4d40
JW		 3389 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3390 u16 rc = cmd->hdr.return_code;
1da74b1c 3391
742d4d40 3392 if (rc) {
1da74b1c 3393 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3394 return -EIO;
3395 }
1da74b1c
FB		 3396 return 0;
3397}
3398
3399int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3400{
3401 struct qeth_cmd_buffer *iob;
3402 struct qeth_ipa_cmd *cmd;
3403
57a688aa 3404 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3405 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3406 if (!iob)
3407 return -ENOMEM;
ff5caa7a 3408 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3409 cmd->data.diagass.type = 1;
3410 cmd->data.diagass.action = action;
3411 switch (action) {
3412 case QETH_DIAGS_TRAP_ARM:
3413 cmd->data.diagass.options = 0x0003;
3414 cmd->data.diagass.ext = 0x00010000 +
3415 sizeof(struct qeth_trap_id);
3416 qeth_get_trap_id(card,
3417 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3418 break;
3419 case QETH_DIAGS_TRAP_DISARM:
3420 cmd->data.diagass.options = 0x0001;
3421 break;
3422 case QETH_DIAGS_TRAP_CAPTURE:
3423 break;
3424 }
3425 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3426}
1da74b1c 3427
d73ef324
JW		 3428static int qeth_check_qdio_errors(struct qeth_card *card,
3429 struct qdio_buffer *buf,
3430 unsigned int qdio_error,
3431 const char *dbftext)
4a71df50 3432{
779e6e1c 3433 if (qdio_error) {
847a50fd 3434 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3435 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3436 buf->element[15].sflags);
38593d01 3437 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3438 buf->element[14].sflags);
38593d01 3439 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3440 if ((buf->element[15].sflags) == 0x12) {
845ef904 3441 QETH_CARD_STAT_INC(card, rx_fifo_errors);
76b11f8e
UB		 3442 return 0;
3443 } else
3444 return 1;
4a71df50
FB		 3445 }
3446 return 0;
3447}
4a71df50 3448
7c94a882
JW		 3449static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3450 unsigned int count)
4a71df50
FB		 3451{
3452 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3453 struct list_head *lh;
4a71df50
FB		 3454 int i;
3455 int rc;
3456 int newcount = 0;
3457
4a71df50
FB		 3458 /* only requeue at a certain threshold to avoid SIGAs */
3459 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3460 for (i = queue->next_buf_to_init;
3461 i < queue->next_buf_to_init + count; ++i) {
3462 if (qeth_init_input_buffer(card,
ec2b559d 3463 &queue->bufs[QDIO_BUFNR(i)])) {
4a71df50
FB		 3464 break;
3465 } else {
3466 newcount++;
3467 }
3468 }
3469
3470 if (newcount < count) {
3471 /* we are in memory shortage so we switch back to
3472 traditional skb allocation and drop packages */
4a71df50
FB		 3473 atomic_set(&card->force_alloc_skb, 3);
3474 count = newcount;
3475 } else {
4a71df50
FB		 3476 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3477 }
3478
b3332930
FB		 3479 if (!count) {
3480 i = 0;
3481 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3482 i++;
3483 if (i == card->qdio.in_buf_pool.buf_count) {
3484 QETH_CARD_TEXT(card, 2, "qsarbw");
b3332930
FB		 3485 schedule_delayed_work(
3486 &card->buffer_reclaim_work,
3487 QETH_RECLAIM_WORK_TIME);
3488 }
7c94a882 3489 return 0;
b3332930
FB		 3490 }
3491
779e6e1c 3492 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
396c1004 3493 queue->next_buf_to_init, count, NULL);
4a71df50 3494 if (rc) {
847a50fd 3495 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50 3496 }
ec2b559d
JW		 3497 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3498 count);
7c94a882 3499 return count;
4a71df50 3500 }
7c94a882
JW		 3501
3502 return 0;
4a71df50 3503}
d73ef324
JW		 3504
3505static void qeth_buffer_reclaim_work(struct work_struct *work)
3506{
beaadcc6
JW		 3507 struct qeth_card *card = container_of(to_delayed_work(work),
3508 struct qeth_card,
3509 buffer_reclaim_work);
d73ef324 3510
7c94a882
JW		 3511 local_bh_disable();
3512 napi_schedule(&card->napi);
3513 /* kick-start the NAPI softirq: */
3514 local_bh_enable();
d73ef324 3515}
4a71df50 3516
d7a39937 3517static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3518 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3519{
3ec90878 3520 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3521
847a50fd 3522 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3523 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3524
3525 if (!qdio_err)
d7a39937 3526 return;
d303b6fd
JG		 3527
3528 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3529 return;
d303b6fd 3530
847a50fd
CO		 3531 QETH_CARD_TEXT(card, 1, "lnkfail");
3532 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3533 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3534}
3535
664e42ac
JW		 3536/**
3537 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3538 * @queue: queue to check for packing buffer
3539 *
3540 * Returns number of buffers that were prepared for flush.
3541 */
3542static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3543{
3544 struct qeth_qdio_out_buffer *buffer;
3545
3546 buffer = queue->bufs[queue->next_buf_to_fill];
3547 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3548 (buffer->next_element_to_fill > 0)) {
3549 /* it's a packing buffer */
3550 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3551 queue->next_buf_to_fill =
ec2b559d 3552 QDIO_BUFNR(queue->next_buf_to_fill + 1);
664e42ac
JW		 3553 return 1;
3554 }
3555 return 0;
3556}
3557
4a71df50
FB		 3558/*
3559 * Switched to packing state if the number of used buffers on a queue
3560 * reaches a certain limit.
3561 */
3562static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3563{
3564 if (!queue->do_pack) {
3565 if (atomic_read(&queue->used_buffers)
3566 >= QETH_HIGH_WATERMARK_PACK){
3567 /* switch non-PACKING -> PACKING */
847a50fd 3568 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3569 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3570 queue->do_pack = 1;
3571 }
3572 }
3573}
3574
3575/*
3576 * Switches from packing to non-packing mode. If there is a packing
3577 * buffer on the queue this buffer will be prepared to be flushed.
3578 * In that case 1 is returned to inform the caller. If no buffer
3579 * has to be flushed, zero is returned.
3580 */
3581static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3582{
4a71df50
FB		 3583 if (queue->do_pack) {
3584 if (atomic_read(&queue->used_buffers)
3585 <= QETH_LOW_WATERMARK_PACK) {
3586 /* switch PACKING -> non-PACKING */
847a50fd 3587 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3588 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3589 queue->do_pack = 0;
664e42ac 3590 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3591 }
3592 }
4a71df50
FB		 3593 return 0;
3594}
3595
779e6e1c
JG		 3596static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3597 int count)
4a71df50 3598{
6ee091ef 3599 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
e53edf74 3600 struct qeth_card *card = queue->card;
7a4b92e8 3601 unsigned int frames, usecs;
396c1004 3602 struct qaob *aob = NULL;
4a71df50
FB		 3603 int rc;
3604 int i;
4a71df50 3605
4a71df50 3606 for (i = index; i < index + count; ++i) {
ec2b559d 3607 unsigned int bidx = QDIO_BUFNR(i);
8d145da2 3608 struct sk_buff *skb;
ec2b559d 3609
0da9581d 3610 buf = queue->bufs[bidx];
3ec90878
JG		 3611 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3612 SBAL_EFLAGS_LAST_ENTRY;
ee1e52d1 3613 queue->coalesced_frames += buf->frames;
4a71df50 3614
8d145da2
JW		 3615 if (IS_IQD(card)) {
3616 skb_queue_walk(&buf->skb_list, skb)
3617 skb_tx_timestamp(skb);
8d145da2 3618 }
6ee091ef 3619 }
4a71df50 3620
396c1004
JW		 3621 if (IS_IQD(card)) {
3622 if (card->options.cq == QETH_CQ_ENABLED &&
3623 !qeth_iqd_is_mcast_queue(card, queue) &&
3624 count == 1) {
3625 if (!buf->aob)
3626 buf->aob = qdio_allocate_aob();
3627 if (buf->aob) {
3628 aob = buf->aob;
3629 aob->user1 = (u64) buf;
3630 }
3631 }
3632 } else {
4a71df50
FB		 3633 if (!queue->do_pack) {
3634 if ((atomic_read(&queue->used_buffers) >=
3635 (QETH_HIGH_WATERMARK_PACK -
3636 QETH_WATERMARK_PACK_FUZZ)) &&
3637 !atomic_read(&queue->set_pci_flags_count)) {
3638 /* it's likely that we'll go to packing
3639 * mode soon */
3640 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3641 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3642 }
3643 } else {
3644 if (!atomic_read(&queue->set_pci_flags_count)) {
3645 /*
3646 * there's no outstanding PCI any more, so we
3647 * have to request a PCI to be sure the the PCI
3648 * will wake at some time in the future then we
3649 * can flush packed buffers that might still be
3650 * hanging around, which can happen if no
3651 * further send was requested by the stack
3652 */
3653 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3654 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3655 }
3656 }
3657 }
3658
1ab2f8c6 3659 QETH_TXQ_STAT_INC(queue, doorbell);
7a4b92e8
JW		 3660 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_OUTPUT, queue->queue_no,
3661 index, count, aob);
e53edf74 3662
d6e51503
JW		 3663 switch (rc) {
3664 case 0:
3665 case -ENOBUFS:
3666 /* ignore temporary SIGA errors without busy condition */
3667
3668 /* Fake the TX completion interrupt: */
7a4b92e8
JW		 3669 frames = READ_ONCE(queue->max_coalesced_frames);
3670 usecs = READ_ONCE(queue->coalesce_usecs);
d6e51503 3671
7a4b92e8
JW		 3672 if (frames && queue->coalesced_frames >= frames) {
3673 napi_schedule(&queue->napi);
3674 queue->coalesced_frames = 0;
3675 QETH_TXQ_STAT_INC(queue, coal_frames);
3676 } else if (qeth_use_tx_irqs(card) &&
3677 atomic_read(&queue->used_buffers) >= 32) {
3678 /* Old behaviour carried over from the qdio layer: */
3679 napi_schedule(&queue->napi);
3680 QETH_TXQ_STAT_INC(queue, coal_frames);
3681 } else if (usecs) {
3682 qeth_tx_arm_timer(queue, usecs);
ee1e52d1 3683 }
e53edf74 3684
d6e51503
JW		 3685 break;
3686 default:
847a50fd 3687 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3688 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3689 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3690 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3691 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3692
4a71df50
FB		 3693 /* this must not happen under normal circumstances. if it
3694 * happens something is really wrong -> recover */
3695 qeth_schedule_recovery(queue->card);
4a71df50 3696 }
4a71df50
FB		 3697}
3698
9549d70a
JW		 3699static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3700{
8b664cd1 3701 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3702
8b664cd1 3703 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3704 queue->prev_hdr = NULL;
8b664cd1 3705 queue->bulk_count = 0;
9549d70a
JW		 3706}
3707
4a71df50
FB		 3708static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3709{
4a71df50
FB		 3710 /*
3711 * check if weed have to switch to non-packing mode or if
3712 * we have to get a pci flag out on the queue
3713 */
3714 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3715 !atomic_read(&queue->set_pci_flags_count)) {
a1668474
JW		 3716 unsigned int index, flush_cnt;
3717 bool q_was_packing;
3718
3719 spin_lock(&queue->lock);
3720
3721 index = queue->next_buf_to_fill;
3722 q_was_packing = queue->do_pack;
3723
3724 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3725 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3726 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3727
3728 if (flush_cnt) {
3729 qeth_flush_buffers(queue, index, flush_cnt);
b0abc4f5
JW		 3730 if (q_was_packing)
3731 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3732 }
a1668474
JW		 3733
3734 spin_unlock(&queue->lock);
4a71df50
FB		 3735 }
3736}
3737
0a6e6345 3738static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
a1c3ed4c
FB		 3739{
3740 struct qeth_card *card = (struct qeth_card *)card_ptr;
3741
3d35dbe6 3742 napi_schedule_irqoff(&card->napi);
a1c3ed4c 3743}
a1c3ed4c 3744
0da9581d
EL		 3745int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3746{
3747 int rc;
3748
3749 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3750 rc = -1;
3751 goto out;
3752 } else {
3753 if (card->options.cq == cq) {
3754 rc = 0;
3755 goto out;
3756 }
3757
41c47da3 3758 qeth_free_qdio_queues(card);
0da9581d
EL		 3759 card->options.cq = cq;
3760 rc = 0;
3761 }
3762out:
3763 return rc;
3764
3765}
3766EXPORT_SYMBOL_GPL(qeth_configure_cq);
3767
3b346c18
JW		 3768static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3769 unsigned int queue, int first_element,
3770 int count)
3771{
0da9581d
EL		 3772 struct qeth_qdio_q *cq = card->qdio.c_q;
3773 int i;
3774 int rc;
3775
0da9581d
EL		 3776 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3777 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3778 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3779
3780 if (qdio_err) {
3a18d754 3781 netif_tx_stop_all_queues(card->dev);
0da9581d 3782 qeth_schedule_recovery(card);
4326b5b4 3783 return;
0da9581d
EL		 3784 }
3785
3786 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3787 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3788 int e = 0;
0da9581d 3789
903e4853
UB		 3790 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3791 buffer->element[e].addr) {
2db01da8 3792 unsigned long phys_aob_addr = buffer->element[e].addr;
0da9581d 3793
0da9581d 3794 qeth_qdio_handle_aob(card, phys_aob_addr);
0da9581d
EL		 3795 ++e;
3796 }
3b346c18 3797 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d
EL		 3798 }
3799 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
396c1004 3800 cq->next_buf_to_init, count, NULL);
0da9581d
EL		 3801 if (rc) {
3802 dev_warn(&card->gdev->dev,
3803 "QDIO reported an error, rc=%i\n", rc);
3804 QETH_CARD_TEXT(card, 2, "qcqherr");
3805 }
ec2b559d
JW		 3806
3807 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3808}
3809
7bcd64eb
JW		 3810static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3811 unsigned int qdio_err, int queue,
3812 int first_elem, int count,
3813 unsigned long card_ptr)
a1c3ed4c
FB		 3814{
3815 struct qeth_card *card = (struct qeth_card *)card_ptr;
3816
0da9581d
EL		 3817 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3818 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3819
0a6e6345 3820 if (qdio_err)
a1c3ed4c
FB		 3821 qeth_schedule_recovery(card);
3822}
a1c3ed4c 3823
7bcd64eb
JW		 3824static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3825 unsigned int qdio_error, int __queue,
3826 int first_element, int count,
3827 unsigned long card_ptr)
4a71df50
FB		 3828{
3829 struct qeth_card *card = (struct qeth_card *) card_ptr;
3a18d754 3830 struct net_device *dev = card->dev;
4a71df50 3831
847a50fd 3832 QETH_CARD_TEXT(card, 6, "qdouhdl");
1549d13f 3833 if (qdio_error & QDIO_ERROR_FATAL) {
847a50fd 3834 QETH_CARD_TEXT(card, 2, "achkcond");
3a18d754 3835 netif_tx_stop_all_queues(dev);
779e6e1c 3836 qeth_schedule_recovery(card);
4a71df50 3837 }
4a71df50 3838}
4a71df50 3839
290b8348
SR		 3840/**
3841 * Note: Function assumes that we have 4 outbound queues.
3842 */
73dc2daf 3843int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3844{
e6c15b5f 3845 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3846 u8 tos;
3847
290b8348
SR		 3848 switch (card->qdio.do_prio_queueing) {
3849 case QETH_PRIO_Q_ING_TOS:
3850 case QETH_PRIO_Q_ING_PREC:
17f3a8b5
JW		 3851 switch (vlan_get_protocol(skb)) {
3852 case htons(ETH_P_IP):
290b8348
SR		 3853 tos = ipv4_get_dsfield(ip_hdr(skb));
3854 break;
17f3a8b5 3855 case htons(ETH_P_IPV6):
290b8348
SR		 3856 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3857 break;
3858 default:
3859 return card->qdio.default_out_queue;
4a71df50 3860 }
290b8348 3861 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3862 return ~tos >> 6 & 3;
290b8348 3863 if (tos & IPTOS_MINCOST)
e6c15b5f 3864 return 3;
290b8348
SR		 3865 if (tos & IPTOS_RELIABILITY)
3866 return 2;
3867 if (tos & IPTOS_THROUGHPUT)
3868 return 1;
3869 if (tos & IPTOS_LOWDELAY)
3870 return 0;
d66cb37e
SR		 3871 break;
3872 case QETH_PRIO_Q_ING_SKB:
3873 if (skb->priority > 5)
3874 return 0;
e6c15b5f 3875 return ~skb->priority >> 1 & 3;
d66cb37e 3876 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3877 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3878 return ~ntohs(veth->h_vlan_TCI) >>
3879 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3880 break;
c91a1fb7
JW		 3881 case QETH_PRIO_Q_ING_FIXED:
3882 return card->qdio.default_out_queue;
4a71df50 3883 default:
290b8348 3884 break;
4a71df50 3885 }
290b8348 3886 return card->qdio.default_out_queue;
4a71df50
FB		 3887}
3888EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3889
2863c613
EC		 3890/**
3891 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3892 * @skb: SKB address
3893 *
3894 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3895 * fragmented part of the SKB. Returns zero for linear SKB.
3896 */
356156b6 3897static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3898{
2863c613 3899 int cnt, elements = 0;
271648b4
FB		 3900
3901 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3902 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3903
3904 elements += qeth_get_elements_for_range(
3905 (addr_t)skb_frag_address(frag),
3906 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3907 }
3908 return elements;
3909}
271648b4 3910
40e6a225
JW		 3911/**
3912 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3913 * to transmit an skb.
3914 * @skb: the skb to operate on.
3915 * @data_offset: skip this part of the skb's linear data
3916 *
3917 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3918 * skb's data (both its linear part and paged fragments).
3919 */
3920unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
ba86ceee
JW		 3921{
3922 unsigned int elements = qeth_get_elements_for_frags(skb);
3923 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3924 addr_t start = (addr_t)skb->data + data_offset;
3925
3926 if (start != end)
3927 elements += qeth_get_elements_for_range(start, end);
3928 return elements;
3929}
40e6a225 3930EXPORT_SYMBOL_GPL(qeth_count_elements);
4a71df50 3931
e517b649
JW		 3932#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3933 MAX_TCP_HEADER)
55494264 3934
0d6f02d3 3935/**
ba86ceee
JW		 3936 * qeth_add_hw_header() - add a HW header to an skb.
3937 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3938 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3939 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3940 * @hdr_len: length of the HW header.
3941 * @proto_len: length of protocol headers that need to be in same page as the
3942 * HW header.
0d6f02d3
JW		 3943 *
3944 * Returns the pushed length. If the header can't be pushed on
3945 * (eg. because it would cross a page boundary), it is allocated from
3946 * the cache instead and 0 is returned.
ba86ceee 3947 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3948 * Error to create the hdr is indicated by returning with < 0.
3949 */
b0abc4f5
JW		 3950static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3951 struct sk_buff *skb, struct qeth_hdr **hdr,
3952 unsigned int hdr_len, unsigned int proto_len,
3953 unsigned int *elements)
ba86ceee 3954{
b413ff8a 3955 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
a7c2f4a3 3956 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3957 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3958 unsigned int __elements;
3959 addr_t start, end;
3960 bool push_ok;
3961 int rc;
3962
3963check_layout:
a7c2f4a3 3964 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3965 end = (addr_t)skb->data;
3966
a7c2f4a3 3967 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3968 /* Push HW header into same page as first protocol header. */
3969 push_ok = true;
e517b649
JW		 3970 /* ... but TSO always needs a separate element for headers: */
3971 if (skb_is_gso(skb))
3972 __elements = 1 + qeth_count_elements(skb, proto_len);
3973 else
3974 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3975 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3976 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3977 push_ok = true;
ba86ceee 3978 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3979 } else {
3980 /* Use header cache, copy protocol headers up. */
3981 push_ok = false;
3982 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3983 }
3984
3985 /* Compress skb to fit into one IO buffer: */
3986 if (__elements > max_elements) {
3987 if (!skb_is_nonlinear(skb)) {
3988 /* Drop it, no easy way of shrinking it further. */
3989 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3990 max_elements, __elements, skb->len);
3991 return -E2BIG;
3992 }
3993
3994 rc = skb_linearize(skb);
b0abc4f5
JW		 3995 if (rc) {
3996 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3997 return rc;
b0abc4f5 3998 }
ba86ceee 3999
b0abc4f5 4000 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 4001 /* Linearization changed the layout, re-evaluate: */
4002 goto check_layout;
4003 }
4004
4005 *elements = __elements;
4006 /* Add the header: */
4007 if (push_ok) {
a7c2f4a3
JW		 4008 *hdr = skb_push(skb, hdr_len);
4009 return hdr_len;
0d6f02d3 4010 }
b413ff8a
JW		 4011
4012 /* Fall back to cache element with known-good alignment: */
55494264
JW		 4013 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
4014 return -E2BIG;
b413ff8a 4015 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
0d6f02d3
JW		 4016 if (!*hdr)
4017 return -ENOMEM;
a7c2f4a3
JW		 4018 /* Copy protocol headers behind HW header: */
4019 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 4020 return 0;
4021}
0d6f02d3 4022
9549d70a 4023static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 4024 struct sk_buff *curr_skb,
4025 struct qeth_hdr *curr_hdr)
4026{
8b664cd1 4027 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 4028 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4029
4030 if (!prev_hdr)
4031 return true;
4032
4033 /* All packets must have the same target: */
4034 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4035 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4036
4037 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4038 eth_hdr(curr_skb)->h_dest) &&
4039 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4040 }
4041
4042 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4043 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4044}
4045
fff1aceb
JW		 4046/**
4047 * qeth_fill_buffer() - map skb into an output buffer
4048 * @buf: buffer to transport the skb
4049 * @skb: skb to map into the buffer
4050 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4051 * from qeth_core_header_cache.
4052 * @offset: when mapping the skb, start at skb->data + offset
4053 * @hd_len: if > 0, build a dedicated header element of this size
4054 */
4055static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4056 struct sk_buff *skb, struct qeth_hdr *hdr,
4057 unsigned int offset, unsigned int hd_len)
4a71df50 4058{
384d2ef1
JW		 4059 struct qdio_buffer *buffer = buf->buffer;
4060 int element = buf->next_element_to_fill;
cc309f83
JW		 4061 int length = skb_headlen(skb) - offset;
4062 char *data = skb->data + offset;
4e2fe4ed 4063 unsigned int elem_length, cnt;
fff1aceb
JW		 4064 bool is_first_elem = true;
4065
4066 __skb_queue_tail(&buf->skb_list, skb);
4067
4068 /* build dedicated element for HW Header */
4069 if (hd_len) {
4070 is_first_elem = false;
4071
4072 buffer->element[element].addr = virt_to_phys(hdr);
4073 buffer->element[element].length = hd_len;
4074 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
a875fd16
JW		 4075
4076 /* HW header is allocated from cache: */
4077 if ((void *)hdr != skb->data)
4078 buf->is_header[element] = 1;
4079 /* HW header was pushed and is contiguous with linear part: */
4080 else if (length > 0 && !PAGE_ALIGNED(data) &&
4081 (data == (char *)hdr + hd_len))
4082 buffer->element[element].eflags |=
4083 SBAL_EFLAGS_CONTIGUOUS;
4084
fff1aceb
JW		 4085 element++;
4086 }
4a71df50 4087
cc309f83 4088 /* map linear part into buffer element(s) */
4a71df50 4089 while (length > 0) {
4e2fe4ed
JW		 4090 elem_length = min_t(unsigned int, length,
4091 PAGE_SIZE - offset_in_page(data));
4a71df50 4092
2db01da8 4093 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed
JW		 4094 buffer->element[element].length = elem_length;
4095 length -= elem_length;
384d2ef1
JW		 4096 if (is_first_elem) {
4097 is_first_elem = false;
5258830b
JW		 4098 if (length || skb_is_nonlinear(skb))
4099 /* skb needs additional elements */
3ec90878 4100 buffer->element[element].eflags =
5258830b 4101 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 4102 else
5258830b
JW		 4103 buffer->element[element].eflags = 0;
4104 } else {
4105 buffer->element[element].eflags =
4106 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 4107 }
4e2fe4ed
JW		 4108
4109 data += elem_length;
4a71df50 4110 element++;
4a71df50 4111 }
51aa165c 4112
cc309f83 4113 /* map page frags into buffer element(s) */
51aa165c 4114 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 4115 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4116
4117 data = skb_frag_address(frag);
4118 length = skb_frag_size(frag);
271648b4 4119 while (length > 0) {
4e2fe4ed
JW		 4120 elem_length = min_t(unsigned int, length,
4121 PAGE_SIZE - offset_in_page(data));
271648b4 4122
2db01da8 4123 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed 4124 buffer->element[element].length = elem_length;
271648b4
FB		 4125 buffer->element[element].eflags =
4126 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 4127
4128 length -= elem_length;
4129 data += elem_length;
271648b4
FB		 4130 element++;
4131 }
51aa165c
FB		 4132 }
4133
3ec90878
JG		 4134 if (buffer->element[element - 1].eflags)
4135 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 4136 buf->next_element_to_fill = element;
9549d70a 4137 return element;
4a71df50
FB		 4138}
4139
9549d70a
JW		 4140static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4141 struct sk_buff *skb, unsigned int elements,
4142 struct qeth_hdr *hdr, unsigned int offset,
4143 unsigned int hd_len)
4a71df50 4144{
96bd6c94 4145 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 4146 struct qeth_qdio_out_buffer *buffer;
9549d70a 4147 unsigned int next_element;
54a50941
JW		 4148 struct netdev_queue *txq;
4149 bool stopped = false;
9549d70a
JW		 4150 bool flush;
4151
8b664cd1 4152 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 4153 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 4154
54a50941
JW		 4155 /* Just a sanity check, the wake/stop logic should ensure that we always
4156 * get a free buffer.
4a71df50
FB		 4157 */
4158 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 4159 return -EBUSY;
54a50941 4160
8b664cd1
JW		 4161 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4162
4163 if (flush ||
4164 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4165 if (buffer->next_element_to_fill > 0) {
4166 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4167 queue->bulk_count++;
4168 }
4169
4170 if (queue->bulk_count >= queue->bulk_max)
4171 flush = true;
4172
4173 if (flush)
4174 qeth_flush_queue(queue);
4175
4176 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4177 queue->bulk_count)];
54a50941 4178
9549d70a
JW		 4179 /* Sanity-check again: */
4180 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4181 return -EBUSY;
4182 }
4183
4184 if (buffer->next_element_to_fill == 0 &&
4185 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 4186 /* If a TX completion happens right _here_ and misses to wake
4187 * the txq, then our re-check below will catch the race.
4188 */
4189 QETH_TXQ_STAT_INC(queue, stopped);
4190 netif_tx_stop_queue(txq);
4191 stopped = true;
4192 }
4193
9549d70a 4194 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 4195 buffer->bytes += bytes;
1ab2f8c6 4196 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a 4197 queue->prev_hdr = hdr;
96bd6c94 4198
9549d70a
JW		 4199 flush = __netdev_tx_sent_queue(txq, bytes,
4200 !stopped && netdev_xmit_more());
4201
4202 if (flush || next_element >= queue->max_elements) {
4203 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 4204 queue->bulk_count++;
4205
4206 if (queue->bulk_count >= queue->bulk_max)
4207 flush = true;
4208
4209 if (flush)
4210 qeth_flush_queue(queue);
9549d70a 4211 }
54a50941
JW		 4212
4213 if (stopped && !qeth_out_queue_is_full(queue))
4214 netif_tx_start_queue(txq);
4a71df50 4215 return 0;
4a71df50 4216}
4a71df50
FB		 4217
4218int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
13ddacb5 4219 struct sk_buff *skb, struct qeth_hdr *hdr,
9c3bfda9
JW		 4220 unsigned int offset, unsigned int hd_len,
4221 int elements_needed)
4a71df50 4222{
a1668474 4223 unsigned int start_index = queue->next_buf_to_fill;
4a71df50 4224 struct qeth_qdio_out_buffer *buffer;
9549d70a 4225 unsigned int next_element;
54a50941
JW		 4226 struct netdev_queue *txq;
4227 bool stopped = false;
4a71df50
FB		 4228 int flush_count = 0;
4229 int do_pack = 0;
4a71df50
FB		 4230 int rc = 0;
4231
0da9581d 4232 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4233
4234 /* Just a sanity check, the wake/stop logic should ensure that we always
4235 * get a free buffer.
4a71df50 4236 */
a1668474 4237 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4a71df50 4238 return -EBUSY;
54a50941
JW		 4239
4240 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4241
4a71df50
FB		 4242 /* check if we need to switch packing state of this queue */
4243 qeth_switch_to_packing_if_needed(queue);
4244 if (queue->do_pack) {
4245 do_pack = 1;
64ef8957 4246 /* does packet fit in current buffer? */
4e26c5fe
JW		 4247 if (buffer->next_element_to_fill + elements_needed >
4248 queue->max_elements) {
64ef8957
FB		 4249 /* ... no -> set state PRIMED */
4250 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4251 flush_count++;
4252 queue->next_buf_to_fill =
ec2b559d 4253 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 4254 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4255
4256 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 4257 if (atomic_read(&buffer->state) !=
4258 QETH_QDIO_BUF_EMPTY) {
4259 qeth_flush_buffers(queue, start_index,
779e6e1c 4260 flush_count);
3cdc8a25
JW		 4261 rc = -EBUSY;
4262 goto out;
4a71df50
FB		 4263 }
4264 }
4265 }
f72b4644 4266
54a50941
JW		 4267 if (buffer->next_element_to_fill == 0 &&
4268 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4269 /* If a TX completion happens right _here_ and misses to wake
4270 * the txq, then our re-check below will catch the race.
4271 */
4272 QETH_TXQ_STAT_INC(queue, stopped);
4273 netif_tx_stop_queue(txq);
4274 stopped = true;
4275 }
4276
9549d70a 4277 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
1ab2f8c6
JW		 4278 buffer->bytes += qdisc_pkt_len(skb);
4279 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a
JW		 4280
4281 if (queue->do_pack)
4282 QETH_TXQ_STAT_INC(queue, skbs_pack);
4283 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4284 flush_count++;
4285 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 4286 queue->next_buf_to_fill =
4287 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 4288 }
4289
4a71df50 4290 if (flush_count)
779e6e1c 4291 qeth_flush_buffers(queue, start_index, flush_count);
a1668474 4292
3cdc8a25 4293out:
b0abc4f5
JW		 4294 if (do_pack)
4295 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4296
54a50941
JW		 4297 if (stopped && !qeth_out_queue_is_full(queue))
4298 netif_tx_start_queue(txq);
4a71df50
FB		 4299 return rc;
4300}
4301EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4302
81ec5439
JW		 4303static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4304 unsigned int payload_len, struct sk_buff *skb,
4305 unsigned int proto_len)
82bf5c08
JW		 4306{
4307 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4308
4309 ext->hdr_tot_len = sizeof(*ext);
4310 ext->imb_hdr_no = 1;
4311 ext->hdr_type = 1;
4312 ext->hdr_version = 1;
4313 ext->hdr_len = 28;
4314 ext->payload_len = payload_len;
4315 ext->mss = skb_shinfo(skb)->gso_size;
4316 ext->dg_hdr_len = proto_len;
4317}
82bf5c08 4318
fc69660b 4319int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
17f3a8b5 4320 struct qeth_qdio_out_q *queue, __be16 proto,
b0abc4f5
JW		 4321 void (*fill_header)(struct qeth_qdio_out_q *queue,
4322 struct qeth_hdr *hdr, struct sk_buff *skb,
17f3a8b5 4323 __be16 proto, unsigned int data_len))
fc69660b 4324{
82bf5c08 4325 unsigned int proto_len, hw_hdr_len;
fc69660b 4326 unsigned int frame_len = skb->len;
82bf5c08 4327 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4328 unsigned int data_offset = 0;
4329 struct qeth_hdr *hdr = NULL;
4330 unsigned int hd_len = 0;
4331 unsigned int elements;
4332 int push_len, rc;
fc69660b 4333
82bf5c08
JW		 4334 if (is_tso) {
4335 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4336 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4337 } else {
4338 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4339 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4340 }
4341
fc69660b
JW		 4342 rc = skb_cow_head(skb, hw_hdr_len);
4343 if (rc)
4344 return rc;
4345
b0abc4f5 4346 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4347 &elements);
4348 if (push_len < 0)
4349 return push_len;
82bf5c08 4350 if (is_tso || !push_len) {
fc69660b
JW		 4351 /* HW header needs its own buffer element. */
4352 hd_len = hw_hdr_len + proto_len;
82bf5c08 4353 data_offset = push_len + proto_len;
fc69660b 4354 }
e517b649 4355 memset(hdr, 0, hw_hdr_len);
17f3a8b5 4356 fill_header(queue, hdr, skb, proto, frame_len);
82bf5c08
JW		 4357 if (is_tso)
4358 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4359 frame_len - proto_len, skb, proto_len);
fc69660b 4360
fc69660b 4361 if (IS_IQD(card)) {
9549d70a
JW		 4362 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4363 hd_len);
fc69660b
JW		 4364 } else {
4365 /* TODO: drop skb_orphan() once TX completion is fast enough */
4366 skb_orphan(skb);
a1668474 4367 spin_lock(&queue->lock);
fc69660b
JW		 4368 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4369 hd_len, elements);
a1668474 4370 spin_unlock(&queue->lock);
fc69660b
JW		 4371 }
4372
eeac0e20
JW		 4373 if (rc && !push_len)
4374 kmem_cache_free(qeth_core_header_cache, hdr);
4375
fc69660b
JW		 4376 return rc;
4377}
4378EXPORT_SYMBOL_GPL(qeth_xmit);
4379
4a71df50
FB		 4380static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4381 struct qeth_reply *reply, unsigned long data)
4382{
686c97ee 4383 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4384 struct qeth_ipacmd_setadpparms *setparms;
4385
847a50fd 4386 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4387
4a71df50 4388 setparms = &(cmd->data.setadapterparms);
686c97ee 4389 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4390 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4391 setparms->data.mode = SET_PROMISC_MODE_OFF;
4392 }
4393 card->info.promisc_mode = setparms->data.mode;
742d4d40 4394 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4395}
4396
59b757a9 4397void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4398{
59b757a9
JW		 4399 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4400 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4401 struct qeth_cmd_buffer *iob;
4402 struct qeth_ipa_cmd *cmd;
4403
847a50fd 4404 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4405 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4406
4407 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4408 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4409 if (!iob)
4410 return;
ff5caa7a 4411 cmd = __ipa_cmd(iob);
4a71df50
FB		 4412 cmd->data.setadapterparms.data.mode = mode;
4413 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4414}
4415EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4416
4a71df50
FB		 4417static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4418 struct qeth_reply *reply, unsigned long data)
4419{
686c97ee 4420 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4421 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4422
847a50fd 4423 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4424 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4425 return -EIO;
4a71df50 4426
b144b99f 4427 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4428 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4429 return -EADDRNOTAVAIL;
4430
b144b99f
JW		 4431 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4432 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4433 return -EADDRNOTAVAIL;
b144b99f
JW		 4434
4435 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4436 return 0;
4437}
4438
4439int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4440{
4441 int rc;
4442 struct qeth_cmd_buffer *iob;
4443 struct qeth_ipa_cmd *cmd;
4444
847a50fd 4445 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4446
4447 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4448 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4449 if (!iob)
4450 return -ENOMEM;
ff5caa7a 4451 cmd = __ipa_cmd(iob);
4a71df50 4452 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4453 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4454 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4455 card->dev->dev_addr);
4a71df50
FB		 4456 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4457 NULL);
4458 return rc;
4459}
4460EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4461
d64ecc22
EL		 4462static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4463 struct qeth_reply *reply, unsigned long data)
4464{
686c97ee 4465 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4466 struct qeth_set_access_ctrl *access_ctrl_req;
d64ecc22 4467
847a50fd 4468 QETH_CARD_TEXT(card, 4, "setaccb");
d64ecc22 4469
d64ecc22 4470 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4471 QETH_CARD_TEXT_(card, 2, "rc=%d",
4472 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4473 if (cmd->data.setadapterparms.hdr.return_code !=
4474 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4475 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4476 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4477 cmd->data.setadapterparms.hdr.return_code);
e2dfcfba 4478 switch (qeth_setadpparms_inspect_rc(cmd)) {
d64ecc22 4479 case SET_ACCESS_CTRL_RC_SUCCESS:
65878fd9 4480 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
d64ecc22
EL		 4481 dev_info(&card->gdev->dev,
4482 "QDIO data connection isolation is deactivated\n");
65878fd9 4483 else
d64ecc22
EL		 4484 dev_info(&card->gdev->dev,
4485 "QDIO data connection isolation is activated\n");
65878fd9 4486 return 0;
0f54761d 4487 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4488 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4489 CARD_DEVID(card));
65878fd9 4490 return 0;
0f54761d 4491 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4492 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4493 CARD_DEVID(card));
65878fd9 4494 return 0;
d64ecc22 4495 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4496 dev_err(&card->gdev->dev, "Adapter does not "
4497 "support QDIO data connection isolation\n");
65878fd9 4498 return -EOPNOTSUPP;
d64ecc22 4499 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4500 dev_err(&card->gdev->dev,
4501 "Adapter is dedicated. "
4502 "QDIO data connection isolation not supported\n");
65878fd9 4503 return -EOPNOTSUPP;
d64ecc22 4504 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4505 dev_err(&card->gdev->dev,
4506 "TSO does not permit QDIO data connection isolation\n");
65878fd9 4507 return -EPERM;
0f54761d
SR		 4508 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4509 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4510 "support reflective relay mode\n");
65878fd9 4511 return -EOPNOTSUPP;
0f54761d
SR		 4512 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4513 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4514 "enabled at the adjacent switch port");
65878fd9 4515 return -EREMOTEIO;
0f54761d
SR		 4516 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4517 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4518 "at the adjacent switch failed\n");
65878fd9
JW		 4519 /* benign error while disabling ISOLATION_MODE_FWD */
4520 return 0;
d64ecc22 4521 default:
65878fd9 4522 return -EIO;
d64ecc22 4523 }
d64ecc22
EL		 4524}
4525
65878fd9
JW		 4526int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4527 enum qeth_ipa_isolation_modes mode)
d64ecc22
EL		 4528{
4529 int rc;
4530 struct qeth_cmd_buffer *iob;
4531 struct qeth_ipa_cmd *cmd;
4532 struct qeth_set_access_ctrl *access_ctrl_req;
4533
847a50fd 4534 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4535
65878fd9
JW		 4536 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4537 dev_err(&card->gdev->dev,
4538 "Adapter does not support QDIO data connection isolation\n");
4539 return -EOPNOTSUPP;
4540 }
4541
d64ecc22 4542 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4543 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4544 if (!iob)
4545 return -ENOMEM;
ff5caa7a 4546 cmd = __ipa_cmd(iob);
d64ecc22 4547 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
65878fd9 4548 access_ctrl_req->subcmd_code = mode;
d64ecc22
EL		 4549
4550 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
65878fd9 4551 NULL);
62f0379c 4552 if (rc) {
65878fd9 4553 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
62f0379c
JW		 4554 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4555 rc, CARD_DEVID(card));
d64ecc22 4556 }
65878fd9 4557
d64ecc22
EL		 4558 return rc;
4559}
d64ecc22 4560
0290bd29 4561void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4a71df50
FB		 4562{
4563 struct qeth_card *card;
4564
509e2562 4565 card = dev->ml_priv;
847a50fd 4566 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4567 qeth_schedule_recovery(card);
4568}
4569EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4570
942d6984 4571static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4572{
509e2562 4573 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4574 int rc = 0;
4575
4576 switch (regnum) {
4577 case MII_BMCR: /* Basic mode control register */
4578 rc = BMCR_FULLDPLX;
4579 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4580 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
54e049c2
JW		 4581 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4582 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4583 rc |= BMCR_SPEED100;
4584 break;
4585 case MII_BMSR: /* Basic mode status register */
4586 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4587 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4588 BMSR_100BASE4;
4589 break;
4590 case MII_PHYSID1: /* PHYS ID 1 */
4591 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4592 dev->dev_addr[2];
4593 rc = (rc >> 5) & 0xFFFF;
4594 break;
4595 case MII_PHYSID2: /* PHYS ID 2 */
4596 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4597 break;
4598 case MII_ADVERTISE: /* Advertisement control reg */
4599 rc = ADVERTISE_ALL;
4600 break;
4601 case MII_LPA: /* Link partner ability reg */
4602 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4603 LPA_100BASE4 | LPA_LPACK;
4604 break;
4605 case MII_EXPANSION: /* Expansion register */
4606 break;
4607 case MII_DCOUNTER: /* disconnect counter */
4608 break;
4609 case MII_FCSCOUNTER: /* false carrier counter */
4610 break;
4611 case MII_NWAYTEST: /* N-way auto-neg test register */
4612 break;
4613 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4614 rc = card->stats.rx_length_errors +
4615 card->stats.rx_frame_errors +
4616 card->stats.rx_fifo_errors;
4a71df50
FB		 4617 break;
4618 case MII_SREVISION: /* silicon revision */
4619 break;
4620 case MII_RESV1: /* reserved 1 */
4621 break;
4622 case MII_LBRERROR: /* loopback, rx, bypass error */
4623 break;
4624 case MII_PHYADDR: /* physical address */
4625 break;
4626 case MII_RESV2: /* reserved 2 */
4627 break;
4628 case MII_TPISTATUS: /* TPI status for 10mbps */
4629 break;
4630 case MII_NCONFIG: /* network interface config */
4631 break;
4632 default:
4633 break;
4634 }
4635 return rc;
4636}
4a71df50 4637
4a71df50 4638static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4639 struct qeth_reply *reply, unsigned long data)
4a71df50 4640{
7c5f8ffb
JW		 4641 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4642 struct qeth_arp_query_info *qinfo = reply->param;
4643 struct qeth_ipacmd_setadpparms *adp_cmd;
4644 unsigned int data_len;
9a764c1e 4645 void *snmp_data;
4a71df50 4646
847a50fd 4647 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4648
4a71df50 4649 if (cmd->hdr.return_code) {
8a593148 4650 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4651 return -EIO;
4a71df50
FB		 4652 }
4653 if (cmd->data.setadapterparms.hdr.return_code) {
4654 cmd->hdr.return_code =
4655 cmd->data.setadapterparms.hdr.return_code;
8a593148 4656 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4657 return -EIO;
4a71df50 4658 }
7c5f8ffb
JW		 4659
4660 adp_cmd = &cmd->data.setadapterparms;
4661 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4662 if (adp_cmd->hdr.seq_no == 1) {
4663 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4664 } else {
7c5f8ffb
JW		 4665 snmp_data = &adp_cmd->data.snmp.request;
4666 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4667 }
4a71df50
FB		 4668
4669 /* check if there is enough room in userspace */
4670 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4671 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4672 return -ENOSPC;
4a71df50 4673 }
847a50fd 4674 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4675 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4676 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4677 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4678 /*copy entries to user buffer*/
9a764c1e 4679 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4680 qinfo->udata_offset += data_len;
9a764c1e 4681
4a71df50
FB		 4682 if (cmd->data.setadapterparms.hdr.seq_no <
4683 cmd->data.setadapterparms.hdr.used_total)
4684 return 1;
4685 return 0;
4686}
4687
942d6984 4688static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4689{
d4c08afa 4690 struct qeth_snmp_ureq __user *ureq;
4a71df50 4691 struct qeth_cmd_buffer *iob;
6fb392b1 4692 unsigned int req_len;
4a71df50
FB		 4693 struct qeth_arp_query_info qinfo = {0, };
4694 int rc = 0;
4695
847a50fd 4696 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4697
379ac99e 4698 if (IS_VM_NIC(card))
4a71df50
FB		 4699 return -EOPNOTSUPP;
4700
4701 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4702 IS_LAYER3(card))
4a71df50 4703 return -EOPNOTSUPP;
4fda3354 4704
d4c08afa
JW		 4705 ureq = (struct qeth_snmp_ureq __user *) udata;
4706 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4707 get_user(req_len, &ureq->hdr.req_len))
4708 return -EFAULT;
4709
292a50e3
JW		 4710 /* Sanitize user input, to avoid overflows in iob size calculation: */
4711 if (req_len > QETH_BUFSIZE)
4712 return -EINVAL;
4713
d4c08afa
JW		 4714 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4715 if (!iob)
4716 return -ENOMEM;
4717
4718 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4719 &ureq->cmd, req_len)) {
4720 qeth_put_cmd(iob);
4a71df50 4721 return -EFAULT;
d4c08afa
JW		 4722 }
4723
4a71df50
FB		 4724 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4725 if (!qinfo.udata) {
d4c08afa 4726 qeth_put_cmd(iob);
4a71df50
FB		 4727 return -ENOMEM;
4728 }
4729 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4730
c2153277 4731 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4732 if (rc)
e19e5be8
JW		 4733 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4734 CARD_DEVID(card), rc);
4a71df50
FB		 4735 else {
4736 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4737 rc = -EFAULT;
4738 }
d4c08afa 4739
4a71df50
FB		 4740 kfree(qinfo.udata);
4741 return rc;
4742}
4a71df50 4743
c3ab96f3 4744static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4b2eee35
JW		 4745 struct qeth_reply *reply,
4746 unsigned long data)
c3ab96f3 4747{
686c97ee 4748 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4b2eee35 4749 struct qeth_qoat_priv *priv = reply->param;
c3ab96f3
FB		 4750 int resdatalen;
4751
4752 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4753 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4754 return -EIO;
c3ab96f3 4755
c3ab96f3 4756 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
c3ab96f3 4757
4b7ae122
JW		 4758 if (resdatalen > (priv->buffer_len - priv->response_len))
4759 return -ENOSPC;
c3ab96f3 4760
f7ec2d2a
JW		 4761 memcpy(priv->buffer + priv->response_len,
4762 &cmd->data.setadapterparms.hdr, resdatalen);
c3ab96f3
FB		 4763 priv->response_len += resdatalen;
4764
4765 if (cmd->data.setadapterparms.hdr.seq_no <
4766 cmd->data.setadapterparms.hdr.used_total)
4767 return 1;
4768 return 0;
4769}
4770
942d6984 4771static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4772{
4773 int rc = 0;
4774 struct qeth_cmd_buffer *iob;
4775 struct qeth_ipa_cmd *cmd;
4776 struct qeth_query_oat *oat_req;
4777 struct qeth_query_oat_data oat_data;
4778 struct qeth_qoat_priv priv;
4779 void __user *tmp;
4780
4781 QETH_CARD_TEXT(card, 3, "qoatcmd");
4782
4b2eee35
JW		 4783 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4784 return -EOPNOTSUPP;
c3ab96f3 4785
4b2eee35
JW		 4786 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4787 return -EFAULT;
c3ab96f3
FB		 4788
4789 priv.buffer_len = oat_data.buffer_len;
4790 priv.response_len = 0;
aec45e85 4791 priv.buffer = vzalloc(oat_data.buffer_len);
4b2eee35
JW		 4792 if (!priv.buffer)
4793 return -ENOMEM;
c3ab96f3
FB		 4794
4795 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4796 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4797 if (!iob) {
4798 rc = -ENOMEM;
4799 goto out_free;
4800 }
ff5caa7a 4801 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4802 oat_req = &cmd->data.setadapterparms.data.query_oat;
4803 oat_req->subcmd_code = oat_data.command;
4804
4b2eee35 4805 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
c3ab96f3 4806 if (!rc) {
2ccd31f8
JW		 4807 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4808 u64_to_user_ptr(oat_data.ptr);
c3ab96f3
FB		 4809 oat_data.response_len = priv.response_len;
4810
4b2eee35
JW		 4811 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4812 copy_to_user(udata, &oat_data, sizeof(oat_data)))
c3ab96f3 4813 rc = -EFAULT;
4b7ae122 4814 }
c3ab96f3
FB		 4815
4816out_free:
aec45e85 4817 vfree(priv.buffer);
c3ab96f3
FB		 4818 return rc;
4819}
c3ab96f3 4820
e71e4072
HC		 4821static int qeth_query_card_info_cb(struct qeth_card *card,
4822 struct qeth_reply *reply, unsigned long data)
02d5cb5b 4823{
686c97ee 4824 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4139b2b1 4825 struct qeth_link_info *link_info = reply->param;
02d5cb5b 4826 struct qeth_query_card_info *card_info;
02d5cb5b
EC		 4827
4828 QETH_CARD_TEXT(card, 2, "qcrdincb");
686c97ee 4829 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 4830 return -EIO;
02d5cb5b 4831
686c97ee 4832 card_info = &cmd->data.setadapterparms.data.card_info;
4139b2b1
JW		 4833 netdev_dbg(card->dev,
4834 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4835 card_info->card_type, card_info->port_mode,
4836 card_info->port_speed);
4837
4838 switch (card_info->port_mode) {
4839 case CARD_INFO_PORTM_FULLDUPLEX:
4840 link_info->duplex = DUPLEX_FULL;
4841 break;
4842 case CARD_INFO_PORTM_HALFDUPLEX:
4843 link_info->duplex = DUPLEX_HALF;
4844 break;
4845 default:
4846 link_info->duplex = DUPLEX_UNKNOWN;
4847 }
4848
4849 switch (card_info->card_type) {
4850 case CARD_INFO_TYPE_1G_COPPER_A:
4851 case CARD_INFO_TYPE_1G_COPPER_B:
4852 link_info->speed = SPEED_1000;
4853 link_info->port = PORT_TP;
4854 break;
4855 case CARD_INFO_TYPE_1G_FIBRE_A:
4856 case CARD_INFO_TYPE_1G_FIBRE_B:
4857 link_info->speed = SPEED_1000;
4858 link_info->port = PORT_FIBRE;
4859 break;
4860 case CARD_INFO_TYPE_10G_FIBRE_A:
4861 case CARD_INFO_TYPE_10G_FIBRE_B:
4862 link_info->speed = SPEED_10000;
4863 link_info->port = PORT_FIBRE;
4864 break;
4865 default:
4866 switch (card_info->port_speed) {
4867 case CARD_INFO_PORTS_10M:
4868 link_info->speed = SPEED_10;
4869 break;
4870 case CARD_INFO_PORTS_100M:
4871 link_info->speed = SPEED_100;
4872 break;
4873 case CARD_INFO_PORTS_1G:
4874 link_info->speed = SPEED_1000;
4875 break;
4876 case CARD_INFO_PORTS_10G:
4877 link_info->speed = SPEED_10000;
4878 break;
4879 case CARD_INFO_PORTS_25G:
4880 link_info->speed = SPEED_25000;
4881 break;
4882 default:
4883 link_info->speed = SPEED_UNKNOWN;
4884 }
4885
4886 link_info->port = PORT_OTHER;
4887 }
4888
02d5cb5b
EC		 4889 return 0;
4890}
4891
d896ac62 4892int qeth_query_card_info(struct qeth_card *card,
4139b2b1 4893 struct qeth_link_info *link_info)
02d5cb5b
EC		 4894{
4895 struct qeth_cmd_buffer *iob;
4896
4897 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4898 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4899 return -EOPNOTSUPP;
b9150461 4900 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
1aec42bc
TR		 4901 if (!iob)
4902 return -ENOMEM;
4139b2b1
JW		 4903
4904 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
02d5cb5b 4905}
02d5cb5b 4906
e92d42e7
JW		 4907static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4908 struct qeth_reply *reply_priv,
4909 unsigned long data)
4910{
4911 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4912 struct qeth_link_info *link_info = reply_priv->param;
4913 struct qeth_query_oat_physical_if *phys_if;
4914 struct qeth_query_oat_reply *reply;
4915
4916 if (qeth_setadpparms_inspect_rc(cmd))
4917 return -EIO;
4918
4919 /* Multi-part reply is unexpected, don't bother: */
4920 if (cmd->data.setadapterparms.hdr.used_total > 1)
4921 return -EINVAL;
4922
4923 /* Expect the reply to start with phys_if data: */
4924 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4925 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4926 reply->length < sizeof(*reply))
4927 return -EINVAL;
4928
4929 phys_if = &reply->phys_if;
4930
4931 switch (phys_if->speed_duplex) {
4932 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4933 link_info->speed = SPEED_10;
4934 link_info->duplex = DUPLEX_HALF;
4935 break;
4936 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4937 link_info->speed = SPEED_10;
4938 link_info->duplex = DUPLEX_FULL;
4939 break;
4940 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4941 link_info->speed = SPEED_100;
4942 link_info->duplex = DUPLEX_HALF;
4943 break;
4944 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4945 link_info->speed = SPEED_100;
4946 link_info->duplex = DUPLEX_FULL;
4947 break;
4948 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4949 link_info->speed = SPEED_1000;
4950 link_info->duplex = DUPLEX_HALF;
4951 break;
4952 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4953 link_info->speed = SPEED_1000;
4954 link_info->duplex = DUPLEX_FULL;
4955 break;
4956 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4957 link_info->speed = SPEED_10000;
4958 link_info->duplex = DUPLEX_FULL;
4959 break;
4960 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4961 link_info->speed = SPEED_25000;
4962 link_info->duplex = DUPLEX_FULL;
4963 break;
4964 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4965 default:
4966 link_info->speed = SPEED_UNKNOWN;
4967 link_info->duplex = DUPLEX_UNKNOWN;
4968 break;
4969 }
4970
4971 switch (phys_if->media_type) {
4972 case QETH_QOAT_PHYS_MEDIA_COPPER:
4973 link_info->port = PORT_TP;
235db527 4974 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4975 break;
4976 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
235db527
JW		 4977 link_info->port = PORT_FIBRE;
4978 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4979 break;
e92d42e7
JW		 4980 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4981 link_info->port = PORT_FIBRE;
235db527 4982 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
e92d42e7
JW		 4983 break;
4984 default:
4985 link_info->port = PORT_OTHER;
235db527 4986 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4987 break;
4988 }
4989
4990 return 0;
4991}
4992
baf7998d
JW		 4993static void qeth_init_link_info(struct qeth_card *card)
4994{
4995 card->info.link_info.duplex = DUPLEX_FULL;
4996
4997 if (IS_IQD(card) || IS_VM_NIC(card)) {
4998 card->info.link_info.speed = SPEED_10000;
4999 card->info.link_info.port = PORT_FIBRE;
235db527 5000 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
baf7998d
JW		 5001 } else {
5002 switch (card->info.link_type) {
5003 case QETH_LINK_TYPE_FAST_ETH:
5004 case QETH_LINK_TYPE_LANE_ETH100:
5005 card->info.link_info.speed = SPEED_100;
5006 card->info.link_info.port = PORT_TP;
5007 break;
5008 case QETH_LINK_TYPE_GBIT_ETH:
5009 case QETH_LINK_TYPE_LANE_ETH1000:
5010 card->info.link_info.speed = SPEED_1000;
5011 card->info.link_info.port = PORT_FIBRE;
5012 break;
5013 case QETH_LINK_TYPE_10GBIT_ETH:
5014 card->info.link_info.speed = SPEED_10000;
5015 card->info.link_info.port = PORT_FIBRE;
5016 break;
5017 case QETH_LINK_TYPE_25GBIT_ETH:
5018 card->info.link_info.speed = SPEED_25000;
5019 card->info.link_info.port = PORT_FIBRE;
5020 break;
5021 default:
5022 dev_info(&card->gdev->dev, "Unknown link type %x\n",
5023 card->info.link_type);
5024 card->info.link_info.speed = SPEED_UNKNOWN;
5025 card->info.link_info.port = PORT_OTHER;
5026 }
235db527
JW		 5027
5028 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
baf7998d 5029 }
e92d42e7
JW		 5030
5031 /* Get more accurate data via QUERY OAT: */
5032 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
5033 struct qeth_link_info link_info;
5034 struct qeth_cmd_buffer *iob;
5035
5036 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
5037 SETADP_DATA_SIZEOF(query_oat));
5038 if (iob) {
5039 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
5040 struct qeth_query_oat *oat_req;
5041
5042 oat_req = &cmd->data.setadapterparms.data.query_oat;
5043 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
5044
5045 if (!qeth_send_ipa_cmd(card, iob,
5046 qeth_init_link_info_oat_cb,
5047 &link_info)) {
5048 if (link_info.speed != SPEED_UNKNOWN)
5049 card->info.link_info.speed = link_info.speed;
5050 if (link_info.duplex != DUPLEX_UNKNOWN)
5051 card->info.link_info.duplex = link_info.duplex;
5052 if (link_info.port != PORT_OTHER)
5053 card->info.link_info.port = link_info.port;
235db527
JW		 5054 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
5055 card->info.link_info.link_mode = link_info.link_mode;
e92d42e7
JW		 5056 }
5057 }
5058 }
baf7998d
JW		 5059}
5060
ec61bd2f
JW		 5061/**
5062 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
5063 * @card: pointer to a qeth_card
5064 *
5065 * Returns
5066 * 0, if a MAC address has been set for the card's netdevice
5067 * a return code, for various error conditions
5068 */
5069int qeth_vm_request_mac(struct qeth_card *card)
5070{
5071 struct diag26c_mac_resp *response;
5072 struct diag26c_mac_req *request;
ec61bd2f
JW		 5073 int rc;
5074
57a688aa 5075 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 5076
ec61bd2f
JW		 5077 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5078 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5079 if (!request || !response) {
5080 rc = -ENOMEM;
5081 goto out;
5082 }
5083
ec61bd2f
JW		 5084 request->resp_buf_len = sizeof(*response);
5085 request->resp_version = DIAG26C_VERSION2;
5086 request->op_code = DIAG26C_GET_MAC;
fa115adf 5087 request->devno = card->info.ddev_devno;
ec61bd2f 5088
615dff22 5089 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 5090 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 5091 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 5092 if (rc)
5093 goto out;
615dff22 5094 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 5095
5096 if (request->resp_buf_len < sizeof(*response) ||
5097 response->version != request->resp_version) {
5098 rc = -EIO;
57a688aa
JW		 5099 QETH_CARD_TEXT(card, 2, "badresp");
5100 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5101 sizeof(request->resp_buf_len));
ec61bd2f
JW		 5102 } else if (!is_valid_ether_addr(response->mac)) {
5103 rc = -EINVAL;
57a688aa
JW		 5104 QETH_CARD_TEXT(card, 2, "badmac");
5105 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f
JW		 5106 } else {
5107 ether_addr_copy(card->dev->dev_addr, response->mac);
5108 }
5109
5110out:
5111 kfree(response);
5112 kfree(request);
5113 return rc;
5114}
5115EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5116
d0ff1f52
UB		 5117static void qeth_determine_capabilities(struct qeth_card *card)
5118{
f9e50b02
JW		 5119 struct qeth_channel *channel = &card->data;
5120 struct ccw_device *ddev = channel->ccwdev;
d0ff1f52 5121 int rc;
d0ff1f52
UB		 5122 int ddev_offline = 0;
5123
57a688aa 5124 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 5125 if (!ddev->online) {
5126 ddev_offline = 1;
871602b1 5127 rc = qeth_start_channel(channel);
d0ff1f52 5128 if (rc) {
57a688aa 5129 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 5130 goto out;
5131 }
5132 }
5133
2066e1db 5134 rc = qeth_read_conf_data(card);
d0ff1f52 5135 if (rc) {
e19e5be8
JW		 5136 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5137 CARD_DEVID(card), rc);
57a688aa 5138 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 5139 goto out_offline;
5140 }
d0ff1f52
UB		 5141
5142 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5143 if (rc)
57a688aa 5144 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 5145
57a688aa
JW		 5146 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5147 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5148 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5149 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5150 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 5151 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5152 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5153 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5154 dev_info(&card->gdev->dev,
5155 "Completion Queueing supported\n");
5156 } else {
5157 card->options.cq = QETH_CQ_NOTAVAILABLE;
5158 }
5159
d0ff1f52
UB		 5160out_offline:
5161 if (ddev_offline == 1)
f9e50b02 5162 qeth_stop_channel(channel);
d0ff1f52
UB		 5163out:
5164 return;
5165}
5166
fa115adf
AW		 5167static void qeth_read_ccw_conf_data(struct qeth_card *card)
5168{
5169 struct qeth_card_info *info = &card->info;
5170 struct ccw_device *cdev = CARD_DDEV(card);
5171 struct ccw_dev_id dev_id;
5172
5173 QETH_CARD_TEXT(card, 2, "ccwconfd");
5174 ccw_device_get_id(cdev, &dev_id);
5175
5176 info->ddev_devno = dev_id.devno;
5177 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5178 !ccw_device_get_iid(cdev, &info->iid) &&
5179 !ccw_device_get_chid(cdev, 0, &info->chid);
5180 info->ssid = dev_id.ssid;
5181
5182 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5183 info->chid, info->chpid);
5184
5185 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5186 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5187 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5188 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5189 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5190 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5191 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5192}
5193
4a71df50
FB		 5194static int qeth_qdio_establish(struct qeth_card *card)
5195{
d8564e19
JW		 5196 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5197 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
72d5e850 5198 struct qeth_qib_parms *qib_parms = NULL;
4a71df50 5199 struct qdio_initialize init_data;
d8564e19 5200 unsigned int i;
4a71df50
FB		 5201 int rc = 0;
5202
57a688aa 5203 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 5204
72d5e850
JW		 5205 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5206 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5207 if (!qib_parms)
5208 return -ENOMEM;
4a71df50 5209
72d5e850
JW		 5210 qeth_fill_qib_parms(card, qib_parms);
5211 }
4a71df50 5212
d8564e19
JW		 5213 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5214 if (card->options.cq == QETH_CQ_ENABLED)
5215 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
e9091ffd 5216
d8564e19
JW		 5217 for (i = 0; i < card->qdio.no_out_queues; i++)
5218 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
4a71df50
FB		 5219
5220 memset(&init_data, 0, sizeof(struct qdio_initialize));
379ac99e
JW		 5221 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5222 QDIO_QETH_QFMT;
4a71df50 5223 init_data.qib_param_field_format = 0;
72d5e850 5224 init_data.qib_param_field = (void *)qib_parms;
0da9581d 5225 init_data.no_input_qs = card->qdio.no_in_queues;
4a71df50 5226 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 5227 init_data.input_handler = qeth_qdio_input_handler;
5228 init_data.output_handler = qeth_qdio_output_handler;
0a6e6345 5229 init_data.irq_poll = qeth_qdio_poll;
4a71df50 5230 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 5231 init_data.input_sbal_addr_array = in_sbal_ptrs;
5232 init_data.output_sbal_addr_array = out_sbal_ptrs;
4a71df50
FB		 5233
5234 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5235 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3db1db93
JW		 5236 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5237 init_data.no_output_qs);
cc961d40
JG		 5238 if (rc) {
5239 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5240 goto out;
5241 }
1da1092d 5242 rc = qdio_establish(CARD_DDEV(card), &init_data);
cc961d40 5243 if (rc) {
4a71df50 5244 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 5245 qdio_free(CARD_DDEV(card));
5246 }
4a71df50 5247 }
0da9581d
EL		 5248
5249 switch (card->options.cq) {
5250 case QETH_CQ_ENABLED:
5251 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5252 break;
5253 case QETH_CQ_DISABLED:
5254 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5255 break;
5256 default:
5257 break;
5258 }
72d5e850 5259
cc961d40 5260out:
72d5e850 5261 kfree(qib_parms);
4a71df50
FB		 5262 return rc;
5263}
5264
5265static void qeth_core_free_card(struct qeth_card *card)
5266{
57a688aa 5267 QETH_CARD_TEXT(card, 2, "freecrd");
fb8d2580
JW		 5268
5269 unregister_service_level(&card->qeth_service_level);
5270 debugfs_remove_recursive(card->debugfs);
c3b2218d 5271 qeth_put_cmd(card->read_cmd);
c0a2e4d1 5272 destroy_workqueue(card->event_wq);
a2eb0ad5 5273 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 5274 kfree(card);
5275}
5276
b7ea041b 5277static void qeth_trace_features(struct qeth_card *card)
395672e0
SR		 5278{
5279 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 5280 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5281 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5282 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5283 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5284 sizeof(card->info.diagass_support));
395672e0 5285}
395672e0 5286
4a71df50 5287static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 5288 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5289 .driver_info = QETH_CARD_TYPE_OSD},
5290 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5291 .driver_info = QETH_CARD_TYPE_IQD},
4e2b5aa5 5292#ifdef CONFIG_QETH_OSN
5113fec0
UB		 5293 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5294 .driver_info = QETH_CARD_TYPE_OSN},
4e2b5aa5 5295#endif
5113fec0
UB		 5296 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5297 .driver_info = QETH_CARD_TYPE_OSM},
4e2b5aa5 5298#ifdef CONFIG_QETH_OSX
5113fec0
UB		 5299 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5300 .driver_info = QETH_CARD_TYPE_OSX},
4e2b5aa5 5301#endif
4a71df50
FB		 5302 {},
5303};
5304MODULE_DEVICE_TABLE(ccw, qeth_ids);
5305
5306static struct ccw_driver qeth_ccw_driver = {
3bda058b 5307 .driver = {
3e70b3b8 5308 .owner = THIS_MODULE,
3bda058b
SO		 5309 .name = "qeth",
5310 },
4a71df50
FB		 5311 .ids = qeth_ids,
5312 .probe = ccwgroup_probe_ccwdev,
5313 .remove = ccwgroup_remove_ccwdev,
5314};
5315
b7ea041b 5316static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 5317{
6ebb7f8d 5318 int retries = 3;
4a71df50
FB		 5319 int rc;
5320
57a688aa 5321 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 5322 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 5323 rc = qeth_update_from_chp_desc(card);
5324 if (rc)
5325 return rc;
4a71df50 5326retry:
6ebb7f8d 5327 if (retries < 3)
e19e5be8
JW		 5328 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5329 CARD_DEVID(card));
379ac99e 5330 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
f9e50b02
JW		 5331 qeth_stop_channel(&card->data);
5332 qeth_stop_channel(&card->write);
5333 qeth_stop_channel(&card->read);
22ae2790 5334 qdio_free(CARD_DDEV(card));
871602b1
JW		 5335
5336 rc = qeth_start_channel(&card->read);
aa909224
UB		 5337 if (rc)
5338 goto retriable;
871602b1 5339 rc = qeth_start_channel(&card->write);
aa909224
UB		 5340 if (rc)
5341 goto retriable;
871602b1 5342 rc = qeth_start_channel(&card->data);
aa909224
UB		 5343 if (rc)
5344 goto retriable;
aa909224 5345retriable:
4a71df50 5346 if (rc == -ERESTARTSYS) {
57a688aa 5347 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 5348 return rc;
5349 } else if (rc) {
57a688aa 5350 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 5351 if (--retries < 0)
4a71df50
FB		 5352 goto out;
5353 else
5354 goto retry;
5355 }
7f23d55f 5356
d0ff1f52 5357 qeth_determine_capabilities(card);
fa115adf 5358 qeth_read_ccw_conf_data(card);
7f23d55f 5359 qeth_idx_init(card);
2e873d10
JW		 5360
5361 rc = qeth_idx_activate_read_channel(card);
5362 if (rc == -EINTR) {
57a688aa 5363 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 5364 return rc;
5365 } else if (rc) {
57a688aa 5366 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 5367 if (--retries < 0)
5368 goto out;
5369 else
5370 goto retry;
5371 }
2e873d10
JW		 5372
5373 rc = qeth_idx_activate_write_channel(card);
5374 if (rc == -EINTR) {
57a688aa 5375 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 5376 return rc;
5377 } else if (rc) {
57a688aa 5378 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5379 if (--retries < 0)
5380 goto out;
5381 else
5382 goto retry;
5383 }
908abbb5 5384 card->read_or_write_problem = 0;
4a71df50
FB		 5385 rc = qeth_mpc_initialize(card);
5386 if (rc) {
57a688aa 5387 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5388 goto out;
5389 }
1da74b1c 5390
10340510
JW		 5391 rc = qeth_send_startlan(card);
5392 if (rc) {
57a688aa 5393 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5394 if (rc == -ENETDOWN) {
5395 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5396 *carrier_ok = false;
10340510 5397 } else {
10340510
JW		 5398 goto out;
5399 }
91cc98f5 5400 } else {
9fae5c3b
JW		 5401 *carrier_ok = true;
5402 }
5403
52f82bf1
JW		 5404 card->options.ipa4.supported = 0;
5405 card->options.ipa6.supported = 0;
5406 card->options.adp.supported = 0;
b4d72c08 5407 card->options.sbp.supported_funcs = 0;
1da74b1c 5408 card->info.diagass_support = 0;
1aec42bc
TR		 5409 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5410 if (rc == -ENOMEM)
5411 goto out;
ee75fb86
KM		 5412 if (qeth_is_supported(card, IPA_IPV6)) {
5413 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5414 if (rc == -ENOMEM)
5415 goto out;
5416 }
1aec42bc
TR		 5417 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5418 rc = qeth_query_setadapterparms(card);
5419 if (rc < 0) {
57a688aa 5420 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5421 goto out;
5422 }
5423 }
5424 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5425 rc = qeth_query_setdiagass(card);
0b698c83 5426 if (rc)
57a688aa 5427 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc 5428 }
9897d583 5429
b7ea041b
JW		 5430 qeth_trace_features(card);
5431
9897d583
JW		 5432 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5433 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5434 card->info.hwtrap = 0;
5435
08e95cae 5436 if (card->options.isolation != ISOLATION_MODE_NONE) {
65878fd9
JW		 5437 rc = qeth_setadpparms_set_access_ctrl(card,
5438 card->options.isolation);
08e95cae
JW		 5439 if (rc)
5440 goto out;
5441 }
9897d583 5442
baf7998d
JW		 5443 qeth_init_link_info(card);
5444
aa3ad392
JW		 5445 rc = qeth_init_qdio_queues(card);
5446 if (rc) {
5447 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5448 goto out;
5449 }
5450
4a71df50
FB		 5451 return 0;
5452out:
74eacdb9
FB		 5453 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5454 "an error on the device\n");
e19e5be8
JW		 5455 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5456 CARD_DEVID(card), rc);
4a71df50
FB		 5457 return rc;
5458}
4a71df50 5459
0b9902c1
JW		 5460static int qeth_set_online(struct qeth_card *card,
5461 const struct qeth_discipline *disc)
91003f35 5462{
b7ea041b 5463 bool carrier_ok;
91003f35
JW		 5464 int rc;
5465
91003f35
JW		 5466 mutex_lock(&card->conf_mutex);
5467 QETH_CARD_TEXT(card, 2, "setonlin");
5468
b7ea041b
JW		 5469 rc = qeth_hardsetup_card(card, &carrier_ok);
5470 if (rc) {
5471 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5472 rc = -ENODEV;
5473 goto err_hardsetup;
5474 }
5475
5476 qeth_print_status_message(card);
5477
949bbf4d 5478 if (card->dev->reg_state != NETREG_REGISTERED)
bb5ab541
JW		 5479 /* no need for locking / error handling at this early stage: */
5480 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
bb5ab541 5481
0b9902c1 5482 rc = disc->set_online(card, carrier_ok);
b7ea041b
JW		 5483 if (rc)
5484 goto err_online;
5485
5486 /* let user_space know that device is online */
5487 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
91003f35
JW		 5488
5489 mutex_unlock(&card->conf_mutex);
b7ea041b 5490 return 0;
91003f35 5491
b7ea041b
JW		 5492err_online:
5493err_hardsetup:
f2bcf9dd
JW		 5494 qeth_qdio_clear_card(card, 0);
5495 qeth_clear_working_pool_list(card);
5496 qeth_flush_local_addrs(card);
5497
b7ea041b
JW		 5498 qeth_stop_channel(&card->data);
5499 qeth_stop_channel(&card->write);
5500 qeth_stop_channel(&card->read);
5501 qdio_free(CARD_DDEV(card));
5502
5503 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5504 return rc;
5505}
5506
0b9902c1
JW		 5507int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5508 bool resetting)
91003f35
JW		 5509{
5510 int rc, rc2, rc3;
5511
91003f35
JW		 5512 mutex_lock(&card->conf_mutex);
5513 QETH_CARD_TEXT(card, 3, "setoffl");
5514
5515 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5516 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5517 card->info.hwtrap = 1;
5518 }
5519
7fb7fe5c
JW		 5520 /* cancel any stalled cmd that might block the rtnl: */
5521 qeth_clear_ipacmd_list(card);
5522
91003f35
JW		 5523 rtnl_lock();
5524 card->info.open_when_online = card->dev->flags & IFF_UP;
5525 dev_close(card->dev);
5526 netif_device_detach(card->dev);
5527 netif_carrier_off(card->dev);
5528 rtnl_unlock();
5529
f2bcf9dd
JW		 5530 cancel_work_sync(&card->rx_mode_work);
5531
0b9902c1 5532 disc->set_offline(card);
91003f35 5533
f2bcf9dd
JW		 5534 qeth_qdio_clear_card(card, 0);
5535 qeth_drain_output_queues(card);
5536 qeth_clear_working_pool_list(card);
5537 qeth_flush_local_addrs(card);
5538 card->info.promisc_mode = 0;
5539
91003f35
JW		 5540 rc = qeth_stop_channel(&card->data);
5541 rc2 = qeth_stop_channel(&card->write);
5542 rc3 = qeth_stop_channel(&card->read);
5543 if (!rc)
5544 rc = (rc2) ? rc2 : rc3;
5545 if (rc)
5546 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5547 qdio_free(CARD_DDEV(card));
5548
5549 /* let user_space know that device is offline */
5550 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5551
5552 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5553 return 0;
5554}
5555EXPORT_SYMBOL_GPL(qeth_set_offline);
5556
5557static int qeth_do_reset(void *data)
5558{
0b9902c1 5559 const struct qeth_discipline *disc;
91003f35
JW		 5560 struct qeth_card *card = data;
5561 int rc;
5562
0b9902c1
JW		 5563 /* Lock-free, other users will block until we are done. */
5564 disc = card->discipline;
5565
91003f35
JW		 5566 QETH_CARD_TEXT(card, 2, "recover1");
5567 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5568 return 0;
5569 QETH_CARD_TEXT(card, 2, "recover2");
5570 dev_warn(&card->gdev->dev,
5571 "A recovery process has been started for the device\n");
5572
0b9902c1
JW		 5573 qeth_set_offline(card, disc, true);
5574 rc = qeth_set_online(card, disc);
91003f35
JW		 5575 if (!rc) {
5576 dev_info(&card->gdev->dev,
5577 "Device successfully recovered!\n");
5578 } else {
5579 ccwgroup_set_offline(card->gdev);
5580 dev_warn(&card->gdev->dev,
5581 "The qeth device driver failed to recover an error on the device\n");
5582 }
5583 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5584 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5585 return 0;
5586}
5587
c04b116a
JW		 5588#if IS_ENABLED(CONFIG_QETH_L3)
5589static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5590 struct qeth_hdr *hdr)
5591{
5592 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5593 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5594 struct net_device *dev = skb->dev;
5595
5596 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5597 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5598 "FAKELL", skb->len);
5599 return;
5600 }
5601
5602 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5603 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5604 ETH_P_IP;
5605 unsigned char tg_addr[ETH_ALEN];
5606
5607 skb_reset_network_header(skb);
5608 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5609 case QETH_CAST_MULTICAST:
5610 if (prot == ETH_P_IP)
5611 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5612 else
5613 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5614 QETH_CARD_STAT_INC(card, rx_multicast);
5615 break;
5616 case QETH_CAST_BROADCAST:
5617 ether_addr_copy(tg_addr, dev->broadcast);
5618 QETH_CARD_STAT_INC(card, rx_multicast);
5619 break;
5620 default:
5621 if (card->options.sniffer)
5622 skb->pkt_type = PACKET_OTHERHOST;
5623 ether_addr_copy(tg_addr, dev->dev_addr);
5624 }
5625
5626 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5627 dev_hard_header(skb, dev, prot, tg_addr,
5628 &l3_hdr->next_hop.rx.src_mac, skb->len);
5629 else
5630 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5631 skb->len);
5632 }
5633
5634 /* copy VLAN tag from hdr into skb */
5635 if (!card->options.sniffer &&
5636 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5637 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5638 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5639 l3_hdr->vlan_id :
5640 l3_hdr->next_hop.rx.vlan_id;
5641
5642 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5643 }
5644}
5645#endif
5646
5647static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
dcdcf867 5648 struct qeth_hdr *hdr, bool uses_frags)
c04b116a 5649{
dcdcf867 5650 struct napi_struct *napi = &card->napi;
c04b116a
JW		 5651 bool is_cso;
5652
5653 switch (hdr->hdr.l2.id) {
5654 case QETH_HEADER_TYPE_OSN:
5655 skb_push(skb, sizeof(*hdr));
5656 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
5657 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5658 QETH_CARD_STAT_INC(card, rx_packets);
5659
5660 card->osn_info.data_cb(skb);
5661 return;
5662#if IS_ENABLED(CONFIG_QETH_L3)
5663 case QETH_HEADER_TYPE_LAYER3:
5664 qeth_l3_rebuild_skb(card, skb, hdr);
5665 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5666 break;
5667#endif
5668 case QETH_HEADER_TYPE_LAYER2:
5669 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5670 break;
5671 default:
5672 /* never happens */
dcdcf867
JW		 5673 if (uses_frags)
5674 napi_free_frags(napi);
5675 else
5676 dev_kfree_skb_any(skb);
c04b116a
JW		 5677 return;
5678 }
5679
5680 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5681 skb->ip_summed = CHECKSUM_UNNECESSARY;
5682 QETH_CARD_STAT_INC(card, rx_skb_csum);
5683 } else {
5684 skb->ip_summed = CHECKSUM_NONE;
5685 }
5686
c04b116a
JW		 5687 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5688 QETH_CARD_STAT_INC(card, rx_packets);
5689 if (skb_is_nonlinear(skb)) {
5690 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5691 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5692 skb_shinfo(skb)->nr_frags);
5693 }
5694
dcdcf867
JW		 5695 if (uses_frags) {
5696 napi_gro_frags(napi);
5697 } else {
5698 skb->protocol = eth_type_trans(skb, skb->dev);
5699 napi_gro_receive(napi, skb);
5700 }
c04b116a
JW		 5701}
5702
f677fcb9 5703static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
4a71df50 5704{
f677fcb9 5705 struct page *page = virt_to_page(data);
b6f72f96 5706 unsigned int next_frag;
b3332930 5707
8d68af6a 5708 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5709 get_page(page);
f677fcb9
JW		 5710 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5711 data_len);
4a71df50
FB		 5712}
5713
bca51650
TR		 5714static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5715{
5716 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5717}
5718
c04b116a 5719static int qeth_extract_skb(struct qeth_card *card,
ed13615d 5720 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
c04b116a 5721 int *__offset)
4a71df50 5722{
562cf773 5723 struct qeth_priv *priv = netdev_priv(card->dev);
b3332930 5724 struct qdio_buffer *buffer = qethbuffer->buffer;
dcdcf867 5725 struct napi_struct *napi = &card->napi;
ed13615d 5726 struct qdio_buffer_element *element;
f677fcb9 5727 unsigned int linear_len = 0;
dcdcf867 5728 bool uses_frags = false;
4a71df50 5729 int offset = *__offset;
17caeaa4 5730 bool use_rx_sg = false;
f677fcb9 5731 unsigned int headroom;
c04b116a 5732 struct qeth_hdr *hdr;
8d68af6a 5733 struct sk_buff *skb;
76b11f8e 5734 int skb_len = 0;
4a71df50 5735
ed13615d
JW		 5736 element = &buffer->element[*element_no];
5737
7d4faee7 5738next_packet:
4a71df50 5739 /* qeth_hdr must not cross element boundaries */
864c17c3 5740 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50 5741 if (qeth_is_last_sbale(element))
c04b116a 5742 return -ENODATA;
4a71df50
FB		 5743 element++;
5744 offset = 0;
4a71df50 5745 }
4a71df50 5746
2db01da8 5747 hdr = phys_to_virt(element->addr) + offset;
c04b116a 5748 offset += sizeof(*hdr);
5b55633f
JW		 5749 skb = NULL;
5750
c04b116a 5751 switch (hdr->hdr.l2.id) {
76b11f8e 5752 case QETH_HEADER_TYPE_LAYER2:
c04b116a 5753 skb_len = hdr->hdr.l2.pkt_length;
5b55633f 5754 linear_len = ETH_HLEN;
17caeaa4 5755 headroom = 0;
76b11f8e
UB		 5756 break;
5757 case QETH_HEADER_TYPE_LAYER3:
c04b116a 5758 skb_len = hdr->hdr.l3.length;
7d4faee7
JW		 5759 if (!IS_LAYER3(card)) {
5760 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5761 goto walk_packet;
5762 }
5763
c04b116a 5764 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5b55633f
JW		 5765 linear_len = ETH_HLEN;
5766 headroom = 0;
5767 break;
5768 }
5769
c04b116a 5770 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5b55633f
JW		 5771 linear_len = sizeof(struct ipv6hdr);
5772 else
5773 linear_len = sizeof(struct iphdr);
1abd2296 5774 headroom = ETH_HLEN;
76b11f8e
UB		 5775 break;
5776 case QETH_HEADER_TYPE_OSN:
c04b116a 5777 skb_len = hdr->hdr.osn.pdu_length;
7d4faee7
JW		 5778 if (!IS_OSN(card)) {
5779 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5780 goto walk_packet;
5781 }
5782
5b55633f 5783 linear_len = skb_len;
76b11f8e
UB		 5784 headroom = sizeof(struct qeth_hdr);
5785 break;
5786 default:
c04b116a 5787 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5fd3fcbb
JW		 5788 QETH_CARD_STAT_INC(card, rx_frame_errors);
5789 else
5790 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5791
7d4faee7 5792 /* Can't determine packet length, drop the whole buffer. */
c04b116a 5793 return -EPROTONOSUPPORT;
4a71df50
FB		 5794 }
5795
5b55633f
JW		 5796 if (skb_len < linear_len) {
5797 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5798 goto walk_packet;
5799 }
4a71df50 5800
17caeaa4 5801 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
562cf773 5802 (skb_len > READ_ONCE(priv->rx_copybreak) &&
17caeaa4
JW		 5803 !atomic_read(&card->force_alloc_skb) &&
5804 !IS_OSN(card));
8d68af6a 5805
dcdcf867 5806 if (use_rx_sg) {
8d68af6a 5807 /* QETH_CQ_ENABLED only: */
8ca8559f
JW		 5808 if (qethbuffer->rx_skb &&
5809 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
dcdcf867
JW		 5810 skb = qethbuffer->rx_skb;
5811 qethbuffer->rx_skb = NULL;
5812 goto use_skb;
5813 }
5814
5815 skb = napi_get_frags(napi);
5816 if (!skb) {
5817 /* -ENOMEM, no point in falling back further. */
5818 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5819 goto walk_packet;
5820 }
5821
5822 if (skb_tailroom(skb) >= linear_len + headroom) {
5823 uses_frags = true;
5824 goto use_skb;
5825 }
5826
5827 netdev_info_once(card->dev,
5828 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5829 linear_len + headroom, skb_tailroom(skb));
5830 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
4a71df50 5831 }
17caeaa4 5832
dcdcf867
JW		 5833 linear_len = skb_len;
5834 skb = napi_alloc_skb(napi, linear_len + headroom);
5835 if (!skb) {
17caeaa4 5836 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
dcdcf867
JW		 5837 goto walk_packet;
5838 }
4a71df50 5839
dcdcf867
JW		 5840use_skb:
5841 if (headroom)
5842 skb_reserve(skb, headroom);
7d4faee7 5843walk_packet:
4a71df50 5844 while (skb_len) {
f677fcb9 5845 int data_len = min(skb_len, (int)(element->length - offset));
2db01da8 5846 char *data = phys_to_virt(element->addr) + offset;
f677fcb9
JW		 5847
5848 skb_len -= data_len;
5849 offset += data_len;
7d4faee7 5850
f677fcb9 5851 /* Extract data from current element: */
7d4faee7 5852 if (skb && data_len) {
f677fcb9
JW		 5853 if (linear_len) {
5854 unsigned int copy_len;
5855
5856 copy_len = min_t(unsigned int, linear_len,
5857 data_len);
5858
5859 skb_put_data(skb, data, copy_len);
5860 linear_len -= copy_len;
5861 data_len -= copy_len;
5862 data += copy_len;
5863 }
5864
5865 if (data_len)
5866 qeth_create_skb_frag(skb, data, data_len);
4a71df50 5867 }
f677fcb9
JW		 5868
5869 /* Step forward to next element: */
4a71df50
FB		 5870 if (skb_len) {
5871 if (qeth_is_last_sbale(element)) {
847a50fd 5872 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5873 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7 5874 if (skb) {
dcdcf867
JW		 5875 if (uses_frags)
5876 napi_free_frags(napi);
5877 else
5878 dev_kfree_skb_any(skb);
7d4faee7
JW		 5879 QETH_CARD_STAT_INC(card,
5880 rx_length_errors);
5881 }
c04b116a 5882 return -EMSGSIZE;
4a71df50
FB		 5883 }
5884 element++;
5885 offset = 0;
4a71df50
FB		 5886 }
5887 }
7d4faee7
JW		 5888
5889 /* This packet was skipped, go get another one: */
5890 if (!skb)
5891 goto next_packet;
5892
ed13615d 5893 *element_no = element - &buffer->element[0];
4a71df50 5894 *__offset = offset;
c04b116a 5895
dcdcf867 5896 qeth_receive_skb(card, skb, hdr, uses_frags);
c04b116a
JW		 5897 return 0;
5898}
5899
781b9a18
JW		 5900static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5901 struct qeth_qdio_buffer *buf, bool *done)
c04b116a 5902{
781b9a18 5903 unsigned int work_done = 0;
c04b116a
JW		 5904
5905 while (budget) {
ed13615d 5906 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
c04b116a
JW		 5907 &card->rx.e_offset)) {
5908 *done = true;
5909 break;
5910 }
5911
5912 work_done++;
5913 budget--;
4a71df50 5914 }
c04b116a
JW		 5915
5916 return work_done;
4a71df50 5917}
4a71df50 5918
781b9a18 5919static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
d73ef324 5920{
7c94a882 5921 struct qeth_rx *ctx = &card->rx;
781b9a18 5922 unsigned int work_done = 0;
d73ef324 5923
781b9a18 5924 while (budget > 0) {
b439044b
JW		 5925 struct qeth_qdio_buffer *buffer;
5926 unsigned int skbs_done = 0;
5927 bool done = false;
5928
781b9a18 5929 /* Fetch completed RX buffers: */
d73ef324
JW		 5930 if (!card->rx.b_count) {
5931 card->rx.qdio_err = 0;
7a4b92e8
JW		 5932 card->rx.b_count = qdio_inspect_queue(CARD_DDEV(card),
5933 0, true,
5934 &card->rx.b_index,
5935 &card->rx.qdio_err);
d73ef324
JW		 5936 if (card->rx.b_count <= 0) {
5937 card->rx.b_count = 0;
5938 break;
5939 }
d73ef324
JW		 5940 }
5941
781b9a18 5942 /* Process one completed RX buffer: */
b439044b
JW		 5943 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5944 if (!(card->rx.qdio_err &&
5945 qeth_check_qdio_errors(card, buffer->buffer,
5946 card->rx.qdio_err, "qinerr")))
5947 skbs_done = qeth_extract_skbs(card, budget, buffer,
5948 &done);
5949 else
5950 done = true;
5951
5952 work_done += skbs_done;
5953 budget -= skbs_done;
5954
5955 if (done) {
5956 QETH_CARD_STAT_INC(card, rx_bufs);
5957 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
eff73e16 5958 buffer->pool_entry = NULL;
b439044b 5959 card->rx.b_count--;
7c94a882
JW		 5960 ctx->bufs_refill++;
5961 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5962 ctx->bufs_refill);
b439044b
JW		 5963
5964 /* Step forward to next buffer: */
5965 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5966 card->rx.buf_element = 0;
5967 card->rx.e_offset = 0;
d73ef324
JW		 5968 }
5969 }
5970
781b9a18
JW		 5971 return work_done;
5972}
5973
0a6e6345
JW		 5974static void qeth_cq_poll(struct qeth_card *card)
5975{
5976 unsigned int work_done = 0;
5977
5978 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5979 unsigned int start, error;
5980 int completed;
5981
5982 completed = qdio_inspect_queue(CARD_DDEV(card), 1, true, &start,
5983 &error);
5984 if (completed <= 0)
5985 return;
5986
5987 qeth_qdio_cq_handler(card, error, 1, start, completed);
5988 work_done += completed;
5989 }
5990}
5991
781b9a18
JW		 5992int qeth_poll(struct napi_struct *napi, int budget)
5993{
5994 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5995 unsigned int work_done;
5996
5997 work_done = qeth_rx_poll(card, budget);
5998
7a4b92e8
JW		 5999 if (qeth_use_tx_irqs(card)) {
6000 struct qeth_qdio_out_q *queue;
6001 unsigned int i;
6002
6003 qeth_for_each_output_queue(card, queue, i) {
6004 if (!qeth_out_queue_is_empty(queue))
6005 napi_schedule(&queue->napi);
6006 }
6007 }
6008
0a6e6345
JW		 6009 if (card->options.cq == QETH_CQ_ENABLED)
6010 qeth_cq_poll(card);
6011
7c94a882
JW		 6012 if (budget) {
6013 struct qeth_rx *ctx = &card->rx;
6014
6015 /* Process any substantial refill backlog: */
6016 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
6017
6018 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
6019 if (work_done >= budget)
6020 return work_done;
6021 }
781b9a18 6022
f9ce416a 6023 if (napi_complete_done(napi, work_done) &&
0a6e6345 6024 qdio_start_irq(CARD_DDEV(card)))
f9ce416a 6025 napi_schedule(napi);
781b9a18 6026
d73ef324
JW		 6027 return work_done;
6028}
6029EXPORT_SYMBOL_GPL(qeth_poll);
6030
e53edf74 6031static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
7940eaf2
JW		 6032 unsigned int bidx, unsigned int qdio_error,
6033 int budget)
e53edf74
JW		 6034{
6035 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
6036 u8 sflags = buffer->buffer->element[15].sflags;
6037 struct qeth_card *card = queue->card;
7940eaf2 6038 bool error = !!qdio_error;
e53edf74 6039
2223318c 6040 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
396c1004 6041 struct qaob *aob = buffer->aob;
f875d880 6042 enum iucv_tx_notify notify;
396c1004
JW		 6043
6044 if (!aob) {
6045 netdev_WARN_ONCE(card->dev,
6046 "Pending TX buffer %#x without QAOB on TX queue %u\n",
6047 bidx, queue->queue_no);
6048 qeth_schedule_recovery(card);
6049 return;
6050 }
e53edf74 6051
db4ffdce
JW		 6052 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
6053
6054 switch (atomic_cmpxchg(&buffer->state,
6055 QETH_QDIO_BUF_PRIMED,
6056 QETH_QDIO_BUF_PENDING)) {
6057 case QETH_QDIO_BUF_PRIMED:
6058 /* We have initial ownership, no QAOB (yet): */
e53edf74
JW		 6059 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
6060
8908f36d
JW		 6061 /* Handle race with qeth_qdio_handle_aob(): */
6062 switch (atomic_xchg(&buffer->state,
6063 QETH_QDIO_BUF_NEED_QAOB)) {
6064 case QETH_QDIO_BUF_PENDING:
6065 /* No concurrent QAOB notification. */
db4ffdce
JW		 6066
6067 /* Prepare the queue slot for immediate re-use: */
6068 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
e47ded97
JW		 6069 if (qeth_alloc_out_buf(queue, bidx,
6070 GFP_ATOMIC)) {
db4ffdce
JW		 6071 QETH_CARD_TEXT(card, 2, "outofbuf");
6072 qeth_schedule_recovery(card);
6073 }
6074
c20383ad
JW		 6075 list_add(&buffer->list_entry,
6076 &queue->pending_bufs);
db4ffdce
JW		 6077 /* Skip clearing the buffer: */
6078 return;
f875d880
JW		 6079 case QETH_QDIO_BUF_QAOB_DONE:
6080 notify = qeth_compute_cq_notification(aob->aorc, 1);
6081 qeth_notify_skbs(queue, buffer, notify);
6082 error = !!aob->aorc;
8908f36d
JW		 6083 break;
6084 default:
6085 WARN_ON_ONCE(1);
6086 }
e53edf74 6087
db4ffdce 6088 break;
f875d880 6089 case QETH_QDIO_BUF_QAOB_DONE:
db4ffdce 6090 /* qeth_qdio_handle_aob() already received a QAOB: */
f875d880
JW		 6091 notify = qeth_compute_cq_notification(aob->aorc, 0);
6092 qeth_notify_skbs(queue, buffer, notify);
6093 error = !!aob->aorc;
db4ffdce
JW		 6094 break;
6095 default:
6096 WARN_ON_ONCE(1);
e53edf74 6097 }
396c1004
JW		 6098
6099 memset(aob, 0, sizeof(*aob));
db4ffdce 6100 } else if (card->options.cq == QETH_CQ_ENABLED) {
e53edf74
JW		 6101 qeth_notify_skbs(queue, buffer,
6102 qeth_compute_cq_notification(sflags, 0));
db4ffdce
JW		 6103 }
6104
85e537d8 6105 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 6106}
6107
6108static int qeth_tx_poll(struct napi_struct *napi, int budget)
6109{
6110 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
6111 unsigned int queue_no = queue->queue_no;
6112 struct qeth_card *card = queue->card;
6113 struct net_device *dev = card->dev;
6114 unsigned int work_done = 0;
6115 struct netdev_queue *txq;
6116
7a4b92e8
JW		 6117 if (IS_IQD(card))
6118 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
6119 else
6120 txq = netdev_get_tx_queue(dev, queue_no);
e53edf74
JW		 6121
6122 while (1) {
6123 unsigned int start, error, i;
96bd6c94
JW		 6124 unsigned int packets = 0;
6125 unsigned int bytes = 0;
e53edf74
JW		 6126 int completed;
6127
ad4bbd72 6128 qeth_tx_complete_pending_bufs(card, queue, false, budget);
c20383ad 6129
e53edf74
JW		 6130 if (qeth_out_queue_is_empty(queue)) {
6131 napi_complete(napi);
6132 return 0;
6133 }
6134
6135 /* Give the CPU a breather: */
6136 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6137 QETH_TXQ_STAT_INC(queue, completion_yield);
6138 if (napi_complete_done(napi, 0))
6139 napi_schedule(napi);
6140 return 0;
6141 }
6142
6143 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
6144 &start, &error);
6145 if (completed <= 0) {
6146 /* Ensure we see TX completion for pending work: */
7a4b92e8
JW		 6147 if (napi_complete_done(napi, 0) &&
6148 !atomic_read(&queue->set_pci_flags_count))
6149 qeth_tx_arm_timer(queue, queue->rescan_usecs);
e53edf74
JW		 6150 return 0;
6151 }
6152
6153 for (i = start; i < start + completed; i++) {
96bd6c94 6154 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 6155 unsigned int bidx = QDIO_BUFNR(i);
6156
96bd6c94 6157 buffer = queue->bufs[bidx];
1ab2f8c6 6158 packets += buffer->frames;
96bd6c94
JW		 6159 bytes += buffer->bytes;
6160
6161 qeth_handle_send_error(card, buffer, error);
7a4b92e8
JW		 6162 if (IS_IQD(card))
6163 qeth_iqd_tx_complete(queue, bidx, error, budget);
6164 else
6165 qeth_clear_output_buffer(queue, buffer, error,
6166 budget);
e53edf74
JW		 6167 }
6168
6169 atomic_sub(completed, &queue->used_buffers);
6170 work_done += completed;
7a4b92e8
JW		 6171 if (IS_IQD(card))
6172 netdev_tx_completed_queue(txq, packets, bytes);
6173 else
6174 qeth_check_outbound_queue(queue);
e53edf74
JW		 6175
6176 /* xmit may have observed the full-condition, but not yet
6177 * stopped the txq. In which case the code below won't trigger.
6178 * So before returning, xmit will re-check the txq's fill level
6179 * and wake it up if needed.
6180 */
6181 if (netif_tx_queue_stopped(txq) &&
6182 !qeth_out_queue_is_full(queue))
6183 netif_tx_wake_queue(txq);
6184 }
6185}
6186
ad3cbf61
JW		 6187static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6188{
6189 if (!cmd->hdr.return_code)
6190 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6191 return cmd->hdr.return_code;
6192}
6193
4666d7fb
JW		 6194static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6195 struct qeth_reply *reply,
6196 unsigned long data)
6197{
6198 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6199 struct qeth_ipa_caps *caps = reply->param;
6200
6201 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6202 return -EIO;
4666d7fb
JW		 6203
6204 caps->supported = cmd->data.setassparms.data.caps.supported;
6205 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6206 return 0;
6207}
6208
8f43fb00
TR		 6209int qeth_setassparms_cb(struct qeth_card *card,
6210 struct qeth_reply *reply, unsigned long data)
4d7def2a 6211{
742d4d40 6212 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 6213
6214 QETH_CARD_TEXT(card, 4, "defadpcb");
6215
742d4d40
JW		 6216 if (cmd->hdr.return_code)
6217 return -EIO;
6218
6219 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6220 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
52f82bf1 6221 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
742d4d40 6222 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
52f82bf1 6223 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
4d7def2a
TR		 6224 return 0;
6225}
8f43fb00 6226EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 6227
b475e316
TR		 6228struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6229 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 6230 u16 cmd_code,
6231 unsigned int data_length,
b475e316 6232 enum qeth_prot_versions prot)
4d7def2a 6233{
b9150461
JW		 6234 struct qeth_ipacmd_setassparms *setassparms;
6235 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 6236 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 6237
6238 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 6239 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6240 data_length +
6241 offsetof(struct qeth_ipacmd_setassparms,
6242 data));
6243 if (!iob)
6244 return NULL;
4d7def2a 6245
b9150461
JW		 6246 setassparms = &__ipa_cmd(iob)->data.setassparms;
6247 setassparms->assist_no = ipa_func;
4d7def2a 6248
b9150461
JW		 6249 hdr = &setassparms->hdr;
6250 hdr->length = sizeof(*hdr) + data_length;
6251 hdr->command_code = cmd_code;
4d7def2a
TR		 6252 return iob;
6253}
b475e316 6254EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 6255
a8155b00
KM		 6256int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6257 enum qeth_ipa_funcs ipa_func,
1c696c89 6258 u16 cmd_code, u32 *data,
a8155b00 6259 enum qeth_prot_versions prot)
4d7def2a 6260{
1c696c89 6261 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 6262 struct qeth_cmd_buffer *iob;
6263
a8155b00 6264 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 6265 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 6266 if (!iob)
6267 return -ENOMEM;
4fa55fa9 6268
1c696c89
JW		 6269 if (data)
6270 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 6271 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 6272}
a8155b00 6273EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 6274
4a71df50
FB		 6275static void qeth_unregister_dbf_views(void)
6276{
d11ba0c4 6277 int x;
378ac80d 6278
d11ba0c4
PT		 6279 for (x = 0; x < QETH_DBF_INFOS; x++) {
6280 debug_unregister(qeth_dbf[x].id);
6281 qeth_dbf[x].id = NULL;
6282 }
4a71df50
FB		 6283}
6284
8e96c51c 6285void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 6286{
6287 char dbf_txt_buf[32];
345aa66e 6288 va_list args;
cd023216 6289
8e6a8285 6290 if (!debug_level_enabled(id, level))
cd023216 6291 return;
345aa66e
PT		 6292 va_start(args, fmt);
6293 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6294 va_end(args);
8e96c51c 6295 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 6296}
6297EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6298
4a71df50
FB		 6299static int qeth_register_dbf_views(void)
6300{
d11ba0c4
PT		 6301 int ret;
6302 int x;
6303
6304 for (x = 0; x < QETH_DBF_INFOS; x++) {
6305 /* register the areas */
6306 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6307 qeth_dbf[x].pages,
6308 qeth_dbf[x].areas,
6309 qeth_dbf[x].len);
6310 if (qeth_dbf[x].id == NULL) {
6311 qeth_unregister_dbf_views();
6312 return -ENOMEM;
6313 }
4a71df50 6314
d11ba0c4
PT		 6315 /* register a view */
6316 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6317 if (ret) {
6318 qeth_unregister_dbf_views();
6319 return ret;
6320 }
4a71df50 6321
d11ba0c4
PT		 6322 /* set a passing level */
6323 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6324 }
4a71df50
FB		 6325
6326 return 0;
6327}
6328
a70fee3b
JW		 6329static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6330
ea12f1b3
JW		 6331int qeth_setup_discipline(struct qeth_card *card,
6332 enum qeth_discipline_id discipline)
4a71df50 6333{
ea12f1b3
JW		 6334 int rc;
6335
2022e00c 6336 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 6337 switch (discipline) {
6338 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 6339 card->discipline = try_then_request_module(
6340 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 6341 break;
6342 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 6343 card->discipline = try_then_request_module(
6344 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 6345 break;
c70eb09d
JW		 6346 default:
6347 break;
4a71df50 6348 }
a70fee3b 6349 mutex_unlock(&qeth_mod_mutex);
c70eb09d 6350
c041f2d4 6351 if (!card->discipline) {
74eacdb9
FB		 6352 dev_err(&card->gdev->dev, "There is no kernel module to "
6353 "support discipline %d\n", discipline);
a70fee3b 6354 return -EINVAL;
4a71df50 6355 }
a70fee3b 6356
ea12f1b3
JW		 6357 rc = card->discipline->setup(card->gdev);
6358 if (rc) {
6359 if (discipline == QETH_DISCIPLINE_LAYER2)
6360 symbol_put(qeth_l2_discipline);
6361 else
6362 symbol_put(qeth_l3_discipline);
6363 card->discipline = NULL;
6364
6365 return rc;
6366 }
6367
c1a935f6 6368 card->options.layer = discipline;
a70fee3b 6369 return 0;
4a71df50
FB		 6370}
6371
ea12f1b3 6372void qeth_remove_discipline(struct qeth_card *card)
4a71df50 6373{
ea12f1b3
JW		 6374 card->discipline->remove(card->gdev);
6375
4fda3354 6376 if (IS_LAYER2(card))
c041f2d4 6377 symbol_put(qeth_l2_discipline);
4a71df50 6378 else
c041f2d4 6379 symbol_put(qeth_l3_discipline);
c1a935f6 6380 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 6381 card->discipline = NULL;
4a71df50
FB		 6382}
6383
2d2ebb3e 6384const struct device_type qeth_generic_devtype = {
b7169c51 6385 .name = "qeth_generic",
b7169c51 6386};
2d2ebb3e
JW		 6387EXPORT_SYMBOL_GPL(qeth_generic_devtype);
6388
b7169c51
SO		 6389static const struct device_type qeth_osn_devtype = {
6390 .name = "qeth_osn",
b7169c51
SO		 6391};
6392
819dc537
SR		 6393#define DBF_NAME_LEN 20
6394
6395struct qeth_dbf_entry {
6396 char dbf_name[DBF_NAME_LEN];
6397 debug_info_t *dbf_info;
6398 struct list_head dbf_list;
6399};
6400
6401static LIST_HEAD(qeth_dbf_list);
6402static DEFINE_MUTEX(qeth_dbf_list_mutex);
6403
6404static debug_info_t *qeth_get_dbf_entry(char *name)
6405{
6406 struct qeth_dbf_entry *entry;
6407 debug_info_t *rc = NULL;
6408
6409 mutex_lock(&qeth_dbf_list_mutex);
6410 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6411 if (strcmp(entry->dbf_name, name) == 0) {
6412 rc = entry->dbf_info;
6413 break;
6414 }
6415 }
6416 mutex_unlock(&qeth_dbf_list_mutex);
6417 return rc;
6418}
6419
6420static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6421{
6422 struct qeth_dbf_entry *new_entry;
6423
6424 card->debug = debug_register(name, 2, 1, 8);
6425 if (!card->debug) {
6426 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6427 goto err;
6428 }
6429 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6430 goto err_dbg;
6431 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6432 if (!new_entry)
6433 goto err_dbg;
6434 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6435 new_entry->dbf_info = card->debug;
6436 mutex_lock(&qeth_dbf_list_mutex);
6437 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6438 mutex_unlock(&qeth_dbf_list_mutex);
6439
6440 return 0;
6441
6442err_dbg:
6443 debug_unregister(card->debug);
6444err:
6445 return -ENOMEM;
6446}
6447
6448static void qeth_clear_dbf_list(void)
6449{
6450 struct qeth_dbf_entry *entry, *tmp;
6451
6452 mutex_lock(&qeth_dbf_list_mutex);
6453 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6454 list_del(&entry->dbf_list);
6455 debug_unregister(entry->dbf_info);
6456 kfree(entry);
6457 }
6458 mutex_unlock(&qeth_dbf_list_mutex);
6459}
6460
d3d1b205
JW		 6461static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6462{
6463 struct net_device *dev;
562cf773 6464 struct qeth_priv *priv;
d3d1b205
JW		 6465
6466 switch (card->info.type) {
6467 case QETH_CARD_TYPE_IQD:
562cf773 6468 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
d8564e19 6469 ether_setup, QETH_MAX_OUT_QUEUES, 1);
d3d1b205 6470 break;
73dc2daf 6471 case QETH_CARD_TYPE_OSM:
562cf773 6472 dev = alloc_etherdev(sizeof(*priv));
73dc2daf 6473 break;
d3d1b205 6474 case QETH_CARD_TYPE_OSN:
562cf773
JW		 6475 dev = alloc_netdev(sizeof(*priv), "osn%d", NET_NAME_UNKNOWN,
6476 ether_setup);
d3d1b205
JW		 6477 break;
6478 default:
d8564e19 6479 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
d3d1b205
JW		 6480 }
6481
6482 if (!dev)
6483 return NULL;
6484
562cf773
JW		 6485 priv = netdev_priv(dev);
6486 priv->rx_copybreak = QETH_RX_COPYBREAK;
949bbf4d 6487 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
562cf773 6488
d3d1b205
JW		 6489 dev->ml_priv = card;
6490 dev->watchdog_timeo = QETH_TX_TIMEOUT;
72f219da 6491 dev->min_mtu = IS_OSN(card) ? 64 : 576;
8ce7a9e0
JW		 6492 /* initialized when device first goes online: */
6493 dev->max_mtu = 0;
6494 dev->mtu = 0;
d3d1b205
JW		 6495 SET_NETDEV_DEV(dev, &card->gdev->dev);
6496 netif_carrier_off(dev);
5f89eca5 6497
bb5ab541
JW		 6498 if (IS_OSN(card)) {
6499 dev->ethtool_ops = &qeth_osn_ethtool_ops;
6500 } else {
6501 dev->ethtool_ops = &qeth_ethtool_ops;
6502 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6503 dev->hw_features |= NETIF_F_SG;
6504 dev->vlan_features |= NETIF_F_SG;
6505 if (IS_IQD(card))
6506 dev->features |= NETIF_F_SG;
6507 }
5f89eca5 6508
d3d1b205
JW		 6509 return dev;
6510}
6511
6512struct net_device *qeth_clone_netdev(struct net_device *orig)
6513{
6514 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6515
6516 if (!clone)
6517 return NULL;
6518
6519 clone->dev_port = orig->dev_port;
6520 return clone;
6521}
6522
4a71df50
FB		 6523static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6524{
6525 struct qeth_card *card;
6526 struct device *dev;
6527 int rc;
c70eb09d 6528 enum qeth_discipline_id enforced_disc;
819dc537 6529 char dbf_name[DBF_NAME_LEN];
4a71df50 6530
d11ba0c4 6531 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 6532
6533 dev = &gdev->dev;
6534 if (!get_device(dev))
6535 return -ENODEV;
6536
2a0217d5 6537 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 6538
121ca39a 6539 card = qeth_alloc_card(gdev);
4a71df50 6540 if (!card) {
d11ba0c4 6541 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 6542 rc = -ENOMEM;
6543 goto err_dev;
6544 }
af039068
CO		 6545
6546 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6547 dev_name(&gdev->dev));
819dc537 6548 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 6549 if (!card->debug) {
819dc537
SR		 6550 rc = qeth_add_dbf_entry(card, dbf_name);
6551 if (rc)
6552 goto err_card;
af039068 6553 }
af039068 6554
95f4d8b7 6555 qeth_setup_card(card);
d3d1b205 6556 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 6557 if (!card->dev) {
6558 rc = -ENOMEM;
d3d1b205 6559 goto err_card;
778b1ac7 6560 }
d3d1b205 6561
1c103cf8
JW		 6562 qeth_determine_capabilities(card);
6563 qeth_set_blkt_defaults(card);
6564
73dc2daf
JW		 6565 card->qdio.no_out_queues = card->dev->num_tx_queues;
6566 rc = qeth_update_from_chp_desc(card);
6567 if (rc)
6568 goto err_chp_desc;
09ac887f 6569
0b8da811
JW		 6570 if (IS_OSN(card))
6571 gdev->dev.groups = qeth_osn_dev_groups;
6572 else
6573 gdev->dev.groups = qeth_dev_groups;
6574
c70eb09d
JW		 6575 enforced_disc = qeth_enforce_discipline(card);
6576 switch (enforced_disc) {
6577 case QETH_DISCIPLINE_UNDETERMINED:
6578 gdev->dev.type = &qeth_generic_devtype;
6579 break;
6580 default:
6581 card->info.layer_enforced = true;
b41b554c 6582 /* It's so early that we don't need the discipline_mutex yet. */
ea12f1b3 6583 rc = qeth_setup_discipline(card, enforced_disc);
5113fec0 6584 if (rc)
ea12f1b3 6585 goto err_setup_disc;
2d2ebb3e 6586
379ac99e
JW		 6587 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
6588 card->discipline->devtype;
2d2ebb3e 6589 break;
4a71df50
FB		 6590 }
6591
4a71df50
FB		 6592 return 0;
6593
ea12f1b3 6594err_setup_disc:
a4cdc9ba 6595err_chp_desc:
73dc2daf 6596 free_netdev(card->dev);
4a71df50
FB		 6597err_card:
6598 qeth_core_free_card(card);
6599err_dev:
6600 put_device(dev);
6601 return rc;
6602}
6603
6604static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6605{
4a71df50
FB		 6606 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6607
57a688aa 6608 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 6609
b41b554c 6610 mutex_lock(&card->discipline_mutex);
ea12f1b3
JW		 6611 if (card->discipline)
6612 qeth_remove_discipline(card);
b41b554c 6613 mutex_unlock(&card->discipline_mutex);
9dc48ccc 6614
8311c7a2
JW		 6615 qeth_free_qdio_queues(card);
6616
d3d1b205 6617 free_netdev(card->dev);
4a71df50 6618 qeth_core_free_card(card);
4a71df50 6619 put_device(&gdev->dev);
4a71df50
FB		 6620}
6621
6622static int qeth_core_set_online(struct ccwgroup_device *gdev)
6623{
6624 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6625 int rc = 0;
c70eb09d 6626 enum qeth_discipline_id def_discipline;
4a71df50 6627
b41b554c 6628 mutex_lock(&card->discipline_mutex);
c041f2d4 6629 if (!card->discipline) {
379ac99e
JW		 6630 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6631 QETH_DISCIPLINE_LAYER2;
ea12f1b3 6632 rc = qeth_setup_discipline(card, def_discipline);
4a71df50
FB		 6633 if (rc)
6634 goto err;
4a71df50 6635 }
91003f35 6636
0b9902c1 6637 rc = qeth_set_online(card, card->discipline);
0b9902c1 6638
4a71df50 6639err:
b41b554c 6640 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 6641 return rc;
6642}
6643
6644static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6645{
6646 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
0b9902c1 6647 int rc;
91003f35 6648
0b9902c1
JW		 6649 mutex_lock(&card->discipline_mutex);
6650 rc = qeth_set_offline(card, card->discipline, false);
6651 mutex_unlock(&card->discipline_mutex);
6652
6653 return rc;
4a71df50
FB		 6654}
6655
6656static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6657{
6658 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
378ac80d 6659
96d1bb53
JW		 6660 qeth_set_allowed_threads(card, 0, 1);
6661 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6662 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6663 qeth_qdio_clear_card(card, 0);
41c47da3 6664 qeth_drain_output_queues(card);
96d1bb53 6665 qdio_free(CARD_DDEV(card));
4a71df50
FB		 6666}
6667
36369569
GKH		 6668static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6669 size_t count)
4a71df50
FB		 6670{
6671 int err;
4a71df50 6672
6d8769ab
JW		 6673 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6674 buf);
b7169c51
SO		 6675
6676 return err ? err : count;
6677}
36369569 6678static DRIVER_ATTR_WO(group);
4a71df50 6679
f47e2256
SO		 6680static struct attribute *qeth_drv_attrs[] = {
6681 &driver_attr_group.attr,
6682 NULL,
6683};
6684static struct attribute_group qeth_drv_attr_group = {
6685 .attrs = qeth_drv_attrs,
6686};
6687static const struct attribute_group *qeth_drv_attr_groups[] = {
6688 &qeth_drv_attr_group,
6689 NULL,
6690};
6691
6d8769ab
JW		 6692static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6693 .driver = {
6694 .groups = qeth_drv_attr_groups,
6695 .owner = THIS_MODULE,
6696 .name = "qeth",
6697 },
6698 .ccw_driver = &qeth_ccw_driver,
6699 .setup = qeth_core_probe_device,
6700 .remove = qeth_core_remove_device,
6701 .set_online = qeth_core_set_online,
6702 .set_offline = qeth_core_set_offline,
6703 .shutdown = qeth_core_shutdown,
6d8769ab
JW		 6704};
6705
d7d18da1
JW		 6706struct qeth_card *qeth_get_card_by_busid(char *bus_id)
6707{
6708 struct ccwgroup_device *gdev;
6709 struct qeth_card *card;
6710
6711 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
6712 if (!gdev)
6713 return NULL;
6714
6715 card = dev_get_drvdata(&gdev->dev);
6716 put_device(&gdev->dev);
6717 return card;
6718}
6719EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
6720
942d6984
JW		 6721int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6722{
6723 struct qeth_card *card = dev->ml_priv;
6724 struct mii_ioctl_data *mii_data;
6725 int rc = 0;
6726
942d6984
JW		 6727 switch (cmd) {
6728 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6729 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
6730 break;
6731 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 6732 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6733 !IS_VM_NIC(card))
942d6984 6734 return 1;
379ac99e 6735 return 0;
942d6984
JW		 6736 case SIOCGMIIPHY:
6737 mii_data = if_mii(rq);
6738 mii_data->phy_id = 0;
6739 break;
6740 case SIOCGMIIREG:
6741 mii_data = if_mii(rq);
6742 if (mii_data->phy_id != 0)
6743 rc = -EINVAL;
6744 else
6745 mii_data->val_out = qeth_mdio_read(dev,
6746 mii_data->phy_id, mii_data->reg_num);
6747 break;
6748 case SIOC_QETH_QUERY_OAT:
6749 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
6750 break;
6751 default:
6752 if (card->discipline->do_ioctl)
6753 rc = card->discipline->do_ioctl(dev, rq, cmd);
6754 else
6755 rc = -EOPNOTSUPP;
6756 }
6757 if (rc)
6758 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6759 return rc;
6760}
6761EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6762
4386e34f
JW		 6763static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6764 unsigned long data)
c9475369
TR		 6765{
6766 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 6767 u32 *features = reply->param;
c9475369 6768
ad3cbf61 6769 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6770 return -EIO;
c9475369 6771
4386e34f 6772 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 6773 return 0;
6774}
6775
4386e34f
JW		 6776static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6777 enum qeth_prot_versions prot)
c9475369 6778{
1c696c89
JW		 6779 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6780 NULL, prot);
c9475369
TR		 6781}
6782
4386e34f 6783static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
3be83016 6784 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6785{
571f9dd8 6786 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 6787 struct qeth_cmd_buffer *iob;
6788 struct qeth_ipa_caps caps;
6789 u32 features;
4d7def2a
TR		 6790 int rc;
6791
7e83747d
JW		 6792 /* some L3 HW requires combined L3+L4 csum offload: */
6793 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6794 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 6795 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 6796
4386e34f
JW		 6797 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6798 prot);
6799 if (!iob)
6800 return -ENOMEM;
6801
6802 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6803 if (rc)
4d7def2a 6804 return rc;
7e83747d 6805
4386e34f
JW		 6806 if ((required_features & features) != required_features) {
6807 qeth_set_csum_off(card, cstype, prot);
6808 return -EOPNOTSUPP;
6809 }
7e83747d 6810
b9150461
JW		 6811 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6812 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 6813 prot);
4386e34f
JW		 6814 if (!iob) {
6815 qeth_set_csum_off(card, cstype, prot);
6816 return -ENOMEM;
f9d8e6dc 6817 }
4386e34f
JW		 6818
6819 if (features & QETH_IPA_CHECKSUM_LP2LP)
6820 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6821 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6822 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6823 if (rc) {
4386e34f 6824 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6825 return rc;
6826 }
8f43fb00 6827
4386e34f
JW		 6828 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6829 !qeth_ipa_caps_enabled(&caps, required_features)) {
6830 qeth_set_csum_off(card, cstype, prot);
6831 return -EOPNOTSUPP;
6832 }
6833
a8155b00
KM		 6834 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6835 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
3be83016
JW		 6836
6837 if (lp2lp)
6838 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6839
4d7def2a
TR		 6840 return 0;
6841}
6842
a8155b00 6843static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
3be83016 6844 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6845{
3be83016 6846 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
742d4d40 6847 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6848}
4d7def2a 6849
4666d7fb
JW		 6850static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6851 unsigned long data)
6852{
6853 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6854 struct qeth_tso_start_data *tso_data = reply->param;
6855
6856 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6857 return -EIO;
4666d7fb
JW		 6858
6859 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6860 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6861 return 0;
6862}
6863
1f83b817
JW		 6864static int qeth_set_tso_off(struct qeth_card *card,
6865 enum qeth_prot_versions prot)
4d7def2a 6866{
1f83b817 6867 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6868 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6869}
4d7def2a 6870
1f83b817
JW		 6871static int qeth_set_tso_on(struct qeth_card *card,
6872 enum qeth_prot_versions prot)
6873{
4666d7fb
JW		 6874 struct qeth_tso_start_data tso_data;
6875 struct qeth_cmd_buffer *iob;
6876 struct qeth_ipa_caps caps;
6877 int rc;
6878
6879 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6880 IPA_CMD_ASS_START, 0, prot);
6881 if (!iob)
6882 return -ENOMEM;
6883
4fa55fa9 6884 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6885 if (rc)
6886 return rc;
6887
6888 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6889 qeth_set_tso_off(card, prot);
6890 return -EOPNOTSUPP;
6891 }
6892
6893 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6894 IPA_CMD_ASS_ENABLE,
6895 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6896 if (!iob) {
6897 qeth_set_tso_off(card, prot);
6898 return -ENOMEM;
6899 }
6900
6901 /* enable TSO capability */
4fa55fa9
JW		 6902 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6903 QETH_IPA_LARGE_SEND_TCP;
6904 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6905 if (rc) {
6906 qeth_set_tso_off(card, prot);
6907 return rc;
6908 }
6909
6910 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6911 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6912 qeth_set_tso_off(card, prot);
6913 return -EOPNOTSUPP;
6914 }
6915
6916 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6917 tso_data.mss);
6918 return 0;
1f83b817 6919}
4d7def2a 6920
1f83b817
JW		 6921static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6922 enum qeth_prot_versions prot)
6923{
742d4d40 6924 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6925}
8f43fb00 6926
d7e6ed97
KM		 6927static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6928{
6929 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6930 int rc_ipv6;
6931
6932 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6933 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6934 QETH_PROT_IPV4, NULL);
d7e6ed97
KM		 6935 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6936 /* no/one Offload Assist available, so the rc is trivial */
6937 return rc_ipv4;
ce344356 6938
d7e6ed97 6939 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6940 QETH_PROT_IPV6, NULL);
d7e6ed97
KM		 6941
6942 if (on)
6943 /* enable: success if any Assist is active */
6944 return (rc_ipv6) ? rc_ipv4 : 0;
6945
6946 /* disable: failure if any Assist is still active */
6947 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6948}
6949
ce344356 6950/**
d025da9e
JW		 6951 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6952 * @dev: a net_device
ce344356 6953 */
d025da9e 6954void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6955{
6956 struct qeth_card *card = dev->ml_priv;
d025da9e 6957 netdev_features_t features;
e830baa9 6958
d025da9e 6959 features = dev->features;
5fc692a7 6960 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6961 * netdev_update_features() will restart them.
6962 */
5fc692a7
JW		 6963 dev->features &= ~dev->hw_features;
6964 /* toggle VLAN filter, so that VIDs are re-programmed: */
6965 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6966 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6967 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6968 }
ce344356 6969 netdev_update_features(dev);
d025da9e
JW		 6970 if (features != dev->features)
6971 dev_warn(&card->gdev->dev,
6972 "Device recovery failed to restore all offload features\n");
e830baa9 6973}
d025da9e 6974EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6975
0d49c06b
JW		 6976static void qeth_check_restricted_features(struct qeth_card *card,
6977 netdev_features_t changed,
6978 netdev_features_t actual)
6979{
6980 netdev_features_t ipv6_features = NETIF_F_TSO6;
6981 netdev_features_t ipv4_features = NETIF_F_TSO;
6982
6983 if (!card->info.has_lp2lp_cso_v6)
6984 ipv6_features |= NETIF_F_IPV6_CSUM;
6985 if (!card->info.has_lp2lp_cso_v4)
6986 ipv4_features |= NETIF_F_IP_CSUM;
6987
6988 if ((changed & ipv6_features) && !(actual & ipv6_features))
6989 qeth_flush_local_addrs6(card);
6990 if ((changed & ipv4_features) && !(actual & ipv4_features))
6991 qeth_flush_local_addrs4(card);
6992}
6993
8f43fb00
TR		 6994int qeth_set_features(struct net_device *dev, netdev_features_t features)
6995{
6996 struct qeth_card *card = dev->ml_priv;
6c7cd712 6997 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6998 int rc = 0;
6999
57a688aa
JW		 7000 QETH_CARD_TEXT(card, 2, "setfeat");
7001 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 7002
6c7cd712 7003 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00 7004 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
3be83016
JW		 7005 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
7006 &card->info.has_lp2lp_cso_v4);
6c7cd712
HW		 7007 if (rc)
7008 changed ^= NETIF_F_IP_CSUM;
7009 }
571f9dd8
KM		 7010 if (changed & NETIF_F_IPV6_CSUM) {
7011 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
3be83016
JW		 7012 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
7013 &card->info.has_lp2lp_cso_v6);
571f9dd8
KM		 7014 if (rc)
7015 changed ^= NETIF_F_IPV6_CSUM;
7016 }
d7e6ed97
KM		 7017 if (changed & NETIF_F_RXCSUM) {
7018 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 7019 if (rc)
7020 changed ^= NETIF_F_RXCSUM;
7021 }
1f83b817
JW		 7022 if (changed & NETIF_F_TSO) {
7023 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
7024 QETH_PROT_IPV4);
6c7cd712
HW		 7025 if (rc)
7026 changed ^= NETIF_F_TSO;
7027 }
82bf5c08
JW		 7028 if (changed & NETIF_F_TSO6) {
7029 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
7030 QETH_PROT_IPV6);
7031 if (rc)
7032 changed ^= NETIF_F_TSO6;
7033 }
6c7cd712 7034
0d49c06b
JW		 7035 qeth_check_restricted_features(card, dev->features ^ features,
7036 dev->features ^ changed);
7037
6c7cd712
HW		 7038 /* everything changed successfully? */
7039 if ((dev->features ^ features) == changed)
7040 return 0;
7041 /* something went wrong. save changed features and return error */
7042 dev->features ^= changed;
7043 return -EIO;
8f43fb00
TR		 7044}
7045EXPORT_SYMBOL_GPL(qeth_set_features);
7046
7047netdev_features_t qeth_fix_features(struct net_device *dev,
7048 netdev_features_t features)
7049{
7050 struct qeth_card *card = dev->ml_priv;
7051
57a688aa 7052 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 7053 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
7054 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 7055 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
7056 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 7057 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
7058 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 7059 features &= ~NETIF_F_RXCSUM;
cf536ffe 7060 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 7061 features &= ~NETIF_F_TSO;
82bf5c08
JW		 7062 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
7063 features &= ~NETIF_F_TSO6;
e6e771b3 7064
57a688aa 7065 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 7066 return features;
7067}
7068EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 7069
6d69b1f1
JW		 7070netdev_features_t qeth_features_check(struct sk_buff *skb,
7071 struct net_device *dev,
7072 netdev_features_t features)
7073{
8cebedb6
JW		 7074 struct qeth_card *card = dev->ml_priv;
7075
c619e9a6 7076 /* Traffic with local next-hop is not eligible for some offloads: */
8cebedb6 7077 if (skb->ip_summed == CHECKSUM_PARTIAL &&
65878fd9 7078 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
c619e9a6
JW		 7079 netdev_features_t restricted = 0;
7080
7081 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
7082 restricted |= NETIF_F_ALL_TSO;
7083
7084 switch (vlan_get_protocol(skb)) {
7085 case htons(ETH_P_IP):
7086 if (!card->info.has_lp2lp_cso_v4)
7087 restricted |= NETIF_F_IP_CSUM;
7088
7089 if (restricted && qeth_next_hop_is_local_v4(card, skb))
7090 features &= ~restricted;
7091 break;
7092 case htons(ETH_P_IPV6):
7093 if (!card->info.has_lp2lp_cso_v6)
7094 restricted |= NETIF_F_IPV6_CSUM;
7095
7096 if (restricted && qeth_next_hop_is_local_v6(card, skb))
7097 features &= ~restricted;
7098 break;
7099 default:
7100 break;
7101 }
7102 }
7103
6d69b1f1
JW		 7104 /* GSO segmentation builds skbs with
7105 * a (small) linear part for the headers, and
7106 * page frags for the data.
7107 * Compared to a linear skb, the header-only part consumes an
7108 * additional buffer element. This reduces buffer utilization, and
7109 * hurts throughput. So compress small segments into one element.
7110 */
7111 if (netif_needs_gso(skb, features)) {
7112 /* match skb_segment(): */
7113 unsigned int doffset = skb->data - skb_mac_header(skb);
7114 unsigned int hsize = skb_shinfo(skb)->gso_size;
7115 unsigned int hroom = skb_headroom(skb);
7116
7117 /* linearize only if resulting skb allocations are order-0: */
7118 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
7119 features &= ~NETIF_F_SG;
7120 }
7121
7122 return vlan_features_check(skb, features);
7123}
7124EXPORT_SYMBOL_GPL(qeth_features_check);
7125
b0abc4f5
JW		 7126void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
7127{
7128 struct qeth_card *card = dev->ml_priv;
7129 struct qeth_qdio_out_q *queue;
7130 unsigned int i;
7131
7132 QETH_CARD_TEXT(card, 5, "getstat");
7133
7134 stats->rx_packets = card->stats.rx_packets;
7135 stats->rx_bytes = card->stats.rx_bytes;
845ef904 7136 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 7137 card->stats.rx_frame_errors +
845ef904
JW		 7138 card->stats.rx_fifo_errors;
7139 stats->rx_dropped = card->stats.rx_dropped_nomem +
5b55633f
JW		 7140 card->stats.rx_dropped_notsupp +
7141 card->stats.rx_dropped_runt;
b0abc4f5 7142 stats->multicast = card->stats.rx_multicast;
845ef904 7143 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 7144 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 7145 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 7146
7147 for (i = 0; i < card->qdio.no_out_queues; i++) {
7148 queue = card->qdio.out_qs[i];
7149
7150 stats->tx_packets += queue->stats.tx_packets;
7151 stats->tx_bytes += queue->stats.tx_bytes;
7152 stats->tx_errors += queue->stats.tx_errors;
7153 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 7154 }
7155}
7156EXPORT_SYMBOL_GPL(qeth_get_stats64);
7157
5d8ce41c
JW		 7158#define TC_IQD_UCAST 0
7159static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7160 unsigned int ucast_txqs)
7161{
7162 unsigned int prio;
7163
7164 /* IQD requires mcast traffic to be placed on a dedicated queue, and
7165 * qeth_iqd_select_queue() deals with this.
7166 * For unicast traffic, we defer the queue selection to the stack.
7167 * By installing a trivial prio map that spans over only the unicast
7168 * queues, we can encourage the stack to spread the ucast traffic evenly
7169 * without selecting the mcast queue.
7170 */
7171
7172 /* One traffic class, spanning over all active ucast queues: */
7173 netdev_set_num_tc(dev, 1);
7174 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7175 QETH_IQD_MIN_UCAST_TXQ);
7176
7177 /* Map all priorities to this traffic class: */
7178 for (prio = 0; prio <= TC_BITMASK; prio++)
7179 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7180}
7181
7182int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7183{
7184 struct net_device *dev = card->dev;
7185 int rc;
7186
7187 /* Per netif_setup_tc(), adjust the mapping first: */
7188 if (IS_IQD(card))
7189 qeth_iqd_set_prio_tc_map(dev, count - 1);
7190
7191 rc = netif_set_real_num_tx_queues(dev, count);
7192
7193 if (rc && IS_IQD(card))
7194 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7195
7196 return rc;
7197}
bb5ab541 7198EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
5d8ce41c 7199
3a18d754
JW		 7200u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7201 u8 cast_type, struct net_device *sb_dev)
7202{
66cddf10
JW		 7203 u16 txq;
7204
3a18d754
JW		 7205 if (cast_type != RTN_UNICAST)
7206 return QETH_IQD_MCAST_TXQ;
5d8ce41c
JW		 7207 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7208 return QETH_IQD_MIN_UCAST_TXQ;
66cddf10
JW		 7209
7210 txq = netdev_pick_tx(dev, skb, sb_dev);
7211 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
3a18d754
JW		 7212}
7213EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7214
e6e771b3 7215int qeth_open(struct net_device *dev)
e22355ea
JW		 7216{
7217 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7218 struct qeth_qdio_out_q *queue;
7219 unsigned int i;
e22355ea
JW		 7220
7221 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea 7222
e22355ea 7223 card->data.state = CH_STATE_UP;
3a18d754 7224 netif_tx_start_all_queues(dev);
e22355ea 7225
e22355ea 7226 local_bh_disable();
7a4b92e8
JW		 7227 qeth_for_each_output_queue(card, queue, i) {
7228 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
7229 QETH_NAPI_WEIGHT);
7230 napi_enable(&queue->napi);
7231 napi_schedule(&queue->napi);
e53edf74 7232 }
3e83d467
JW		 7233
7234 napi_enable(&card->napi);
7235 napi_schedule(&card->napi);
e22355ea
JW		 7236 /* kick-start the NAPI softirq: */
7237 local_bh_enable();
3e83d467 7238
e22355ea
JW		 7239 return 0;
7240}
e22355ea
JW		 7241EXPORT_SYMBOL_GPL(qeth_open);
7242
7243int qeth_stop(struct net_device *dev)
7244{
7245 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7246 struct qeth_qdio_out_q *queue;
7247 unsigned int i;
e22355ea
JW		 7248
7249 QETH_CARD_TEXT(card, 4, "qethstop");
3e83d467
JW		 7250
7251 napi_disable(&card->napi);
7252 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7253 qdio_stop_irq(CARD_DDEV(card));
7254
7a4b92e8
JW		 7255 /* Quiesce the NAPI instances: */
7256 qeth_for_each_output_queue(card, queue, i)
7257 napi_disable(&queue->napi);
e53edf74 7258
7a4b92e8
JW		 7259 /* Stop .ndo_start_xmit, might still access queue->napi. */
7260 netif_tx_disable(dev);
e53edf74 7261
7a4b92e8
JW		 7262 qeth_for_each_output_queue(card, queue, i) {
7263 del_timer_sync(&queue->timer);
7264 /* Queues may get re-allocated, so remove the NAPIs. */
7265 netif_napi_del(&queue->napi);
e53edf74
JW		 7266 }
7267
e22355ea
JW		 7268 return 0;
7269}
7270EXPORT_SYMBOL_GPL(qeth_stop);
7271
4a71df50
FB		 7272static int __init qeth_core_init(void)
7273{
7274 int rc;
7275
74eacdb9 7276 pr_info("loading core functions\n");
4a71df50 7277
fb8d2580
JW		 7278 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7279
4a71df50
FB		 7280 rc = qeth_register_dbf_views();
7281 if (rc)
a936b1ef 7282 goto dbf_err;
035da16f 7283 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 7284 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 7285 if (rc)
7286 goto register_err;
55494264
JW		 7287 qeth_core_header_cache =
7288 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7289 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7290 0, NULL);
683d718a
FB		 7291 if (!qeth_core_header_cache) {
7292 rc = -ENOMEM;
7293 goto slab_err;
7294 }
0da9581d
EL		 7295 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7296 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7297 if (!qeth_qdio_outbuf_cache) {
7298 rc = -ENOMEM;
7299 goto cqslab_err;
7300 }
afb6ac59
SO		 7301 rc = ccw_driver_register(&qeth_ccw_driver);
7302 if (rc)
7303 goto ccw_err;
afb6ac59
SO		 7304 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7305 if (rc)
7306 goto ccwgroup_err;
0da9581d 7307
683d718a 7308 return 0;
afb6ac59
SO		 7309
7310ccwgroup_err:
7311 ccw_driver_unregister(&qeth_ccw_driver);
7312ccw_err:
7313 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 7314cqslab_err:
7315 kmem_cache_destroy(qeth_core_header_cache);
683d718a 7316slab_err:
035da16f 7317 root_device_unregister(qeth_core_root_dev);
4a71df50 7318register_err:
4a71df50 7319 qeth_unregister_dbf_views();
a936b1ef 7320dbf_err:
fb8d2580 7321 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7322 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 7323 return rc;
7324}
7325
7326static void __exit qeth_core_exit(void)
7327{
819dc537 7328 qeth_clear_dbf_list();
4a71df50
FB		 7329 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7330 ccw_driver_unregister(&qeth_ccw_driver);
0da9581d 7331 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 7332 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 7333 root_device_unregister(qeth_core_root_dev);
4a71df50 7334 qeth_unregister_dbf_views();
fb8d2580 7335 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7336 pr_info("core functions removed\n");
4a71df50
FB		 7337}
7338
7339module_init(qeth_core_init);
7340module_exit(qeth_core_exit);
7341MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7342MODULE_DESCRIPTION("qeth core functions");
7343MODULE_LICENSE("GPL");
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git