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s390/qeth: don't offer .ndo_bridge_* ops for OSA devices
[linux-block.git] / drivers / s390 / net / qeth_core_main.c
CommitLineData
ab9953ff 1// SPDX-License-Identifier: GPL-2.0
4a71df50 2/*
bbcfcdc8 3 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
74eacdb9
FB		 10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
0d55303c 13#include <linux/compat.h>
4a71df50
FB		 14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
55494264 19#include <linux/log2.h>
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
a8c7629c 60static struct kmem_cache *qeth_core_header_cache;
0da9581d 61static struct kmem_cache *qeth_qdio_outbuf_cache;
a18c28f0 62static struct kmem_cache *qeth_qaob_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
cef6ff22 74static const char *qeth_get_cardname(struct qeth_card *card)
4a71df50 75{
379ac99e 76 if (IS_VM_NIC(card)) {
4a71df50 77 switch (card->info.type) {
5113fec0 78 case QETH_CARD_TYPE_OSD:
7096b187 79 return " Virtual NIC QDIO";
4a71df50 80 case QETH_CARD_TYPE_IQD:
7096b187 81 return " Virtual NIC Hiper";
5113fec0 82 case QETH_CARD_TYPE_OSM:
7096b187 83 return " Virtual NIC QDIO - OSM";
5113fec0 84 case QETH_CARD_TYPE_OSX:
7096b187 85 return " Virtual NIC QDIO - OSX";
4a71df50
FB		 86 default:
87 return " unknown";
88 }
89 } else {
90 switch (card->info.type) {
5113fec0 91 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 92 return " OSD Express";
93 case QETH_CARD_TYPE_IQD:
94 return " HiperSockets";
5113fec0
UB		 95 case QETH_CARD_TYPE_OSM:
96 return " OSM QDIO";
97 case QETH_CARD_TYPE_OSX:
98 return " OSX QDIO";
4a71df50
FB		 99 default:
100 return " unknown";
101 }
102 }
103 return " n/a";
104}
105
106/* max length to be returned: 14 */
107const char *qeth_get_cardname_short(struct qeth_card *card)
108{
379ac99e 109 if (IS_VM_NIC(card)) {
4a71df50 110 switch (card->info.type) {
5113fec0 111 case QETH_CARD_TYPE_OSD:
7096b187 112 return "Virt.NIC QDIO";
4a71df50 113 case QETH_CARD_TYPE_IQD:
7096b187 114 return "Virt.NIC Hiper";
5113fec0 115 case QETH_CARD_TYPE_OSM:
7096b187 116 return "Virt.NIC OSM";
5113fec0 117 case QETH_CARD_TYPE_OSX:
7096b187 118 return "Virt.NIC OSX";
4a71df50
FB		 119 default:
120 return "unknown";
121 }
122 } else {
123 switch (card->info.type) {
5113fec0 124 case QETH_CARD_TYPE_OSD:
4a71df50
FB		 125 switch (card->info.link_type) {
126 case QETH_LINK_TYPE_FAST_ETH:
127 return "OSD_100";
128 case QETH_LINK_TYPE_HSTR:
129 return "HSTR";
130 case QETH_LINK_TYPE_GBIT_ETH:
131 return "OSD_1000";
132 case QETH_LINK_TYPE_10GBIT_ETH:
133 return "OSD_10GIG";
54e049c2
JW		 134 case QETH_LINK_TYPE_25GBIT_ETH:
135 return "OSD_25GIG";
4a71df50
FB		 136 case QETH_LINK_TYPE_LANE_ETH100:
137 return "OSD_FE_LANE";
138 case QETH_LINK_TYPE_LANE_TR:
139 return "OSD_TR_LANE";
140 case QETH_LINK_TYPE_LANE_ETH1000:
141 return "OSD_GbE_LANE";
142 case QETH_LINK_TYPE_LANE:
143 return "OSD_ATM_LANE";
144 default:
145 return "OSD_Express";
146 }
147 case QETH_CARD_TYPE_IQD:
148 return "HiperSockets";
5113fec0
UB		 149 case QETH_CARD_TYPE_OSM:
150 return "OSM_1000";
151 case QETH_CARD_TYPE_OSX:
152 return "OSX_10GIG";
4a71df50
FB		 153 default:
154 return "unknown";
155 }
156 }
157 return "n/a";
158}
159
160void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
161 int clear_start_mask)
162{
163 unsigned long flags;
164
165 spin_lock_irqsave(&card->thread_mask_lock, flags);
166 card->thread_allowed_mask = threads;
167 if (clear_start_mask)
168 card->thread_start_mask &= threads;
169 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
170 wake_up(&card->wait_q);
171}
172EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
173
174int qeth_threads_running(struct qeth_card *card, unsigned long threads)
175{
176 unsigned long flags;
177 int rc = 0;
178
179 spin_lock_irqsave(&card->thread_mask_lock, flags);
180 rc = (card->thread_running_mask & threads);
181 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
182 return rc;
183}
184EXPORT_SYMBOL_GPL(qeth_threads_running);
185
f2bcf9dd 186static void qeth_clear_working_pool_list(struct qeth_card *card)
4a71df50
FB		 187{
188 struct qeth_buffer_pool_entry *pool_entry, *tmp;
eff73e16
JW		 189 struct qeth_qdio_q *queue = card->qdio.in_q;
190 unsigned int i;
4a71df50 191
847a50fd 192 QETH_CARD_TEXT(card, 5, "clwrklst");
4a71df50 193 list_for_each_entry_safe(pool_entry, tmp,
378ac80d
JW		 194 &card->qdio.in_buf_pool.entry_list, list)
195 list_del(&pool_entry->list);
eff73e16
JW		 196
197 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
198 queue->bufs[i].pool_entry = NULL;
4a71df50 199}
4a71df50 200
0f75e149
JW		 201static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
202{
203 unsigned int i;
204
205 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
206 if (entry->elements[i])
207 __free_page(entry->elements[i]);
208 }
209
210 kfree(entry);
211}
212
213static void qeth_free_buffer_pool(struct qeth_card *card)
214{
215 struct qeth_buffer_pool_entry *entry, *tmp;
216
217 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
218 init_list) {
219 list_del(&entry->init_list);
220 qeth_free_pool_entry(entry);
221 }
222}
223
224static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
225{
226 struct qeth_buffer_pool_entry *entry;
227 unsigned int i;
228
229 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
230 if (!entry)
231 return NULL;
232
233 for (i = 0; i < pages; i++) {
714c9108 234 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
0f75e149
JW		 235
236 if (!entry->elements[i]) {
237 qeth_free_pool_entry(entry);
238 return NULL;
239 }
240 }
241
242 return entry;
243}
244
4a71df50
FB		 245static int qeth_alloc_buffer_pool(struct qeth_card *card)
246{
0f75e149
JW		 247 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
248 unsigned int i;
4a71df50 249
847a50fd 250 QETH_CARD_TEXT(card, 5, "alocpool");
4a71df50 251 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
0f75e149
JW		 252 struct qeth_buffer_pool_entry *entry;
253
254 entry = qeth_alloc_pool_entry(buf_elements);
255 if (!entry) {
4a71df50
FB		 256 qeth_free_buffer_pool(card);
257 return -ENOMEM;
258 }
f81649df 259
0f75e149 260 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
4a71df50
FB		 261 }
262 return 0;
263}
264
5d4f7856 265int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
4a71df50 266{
5d4f7856
JW		 267 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
268 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
269 struct qeth_buffer_pool_entry *entry, *tmp;
270 int delta = count - pool->buf_count;
271 LIST_HEAD(entries);
272
847a50fd 273 QETH_CARD_TEXT(card, 2, "realcbp");
4a71df50 274
832585d2
JW		 275 /* Defer until pool is allocated: */
276 if (list_empty(&pool->entry_list))
5d4f7856
JW		 277 goto out;
278
279 /* Remove entries from the pool: */
280 while (delta < 0) {
281 entry = list_first_entry(&pool->entry_list,
282 struct qeth_buffer_pool_entry,
283 init_list);
284 list_del(&entry->init_list);
285 qeth_free_pool_entry(entry);
286
287 delta++;
288 }
289
290 /* Allocate additional entries: */
291 while (delta > 0) {
292 entry = qeth_alloc_pool_entry(buf_elements);
293 if (!entry) {
294 list_for_each_entry_safe(entry, tmp, &entries,
295 init_list) {
296 list_del(&entry->init_list);
297 qeth_free_pool_entry(entry);
298 }
299
300 return -ENOMEM;
301 }
302
303 list_add(&entry->init_list, &entries);
304
305 delta--;
306 }
307
308 list_splice(&entries, &pool->entry_list);
309
310out:
311 card->qdio.in_buf_pool.buf_count = count;
312 pool->buf_count = count;
313 return 0;
4a71df50 314}
5d4f7856 315EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
4a71df50 316
4601ba6c
SO		 317static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
318{
6d284bde
SO		 319 if (!q)
320 return;
321
322 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
4601ba6c
SO		 323 kfree(q);
324}
325
326static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
327{
328 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
329 int i;
330
331 if (!q)
332 return NULL;
333
6d284bde
SO		 334 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
335 kfree(q);
336 return NULL;
337 }
338
4601ba6c 339 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
6d284bde 340 q->bufs[i].buffer = q->qdio_bufs[i];
4601ba6c
SO		 341
342 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
343 return q;
344}
345
cef6ff22 346static int qeth_cq_init(struct qeth_card *card)
0da9581d
EL		 347{
348 int rc;
349
350 if (card->options.cq == QETH_CQ_ENABLED) {
57a688aa 351 QETH_CARD_TEXT(card, 2, "cqinit");
6d284bde
SO		 352 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
353 QDIO_MAX_BUFFERS_PER_Q);
0da9581d 354 card->qdio.c_q->next_buf_to_init = 127;
dc15012b
JW		 355 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 1, 0, 127,
356 NULL);
0da9581d 357 if (rc) {
57a688aa 358 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
0da9581d
EL		 359 goto out;
360 }
361 }
362 rc = 0;
363out:
364 return rc;
365}
366
cef6ff22 367static int qeth_alloc_cq(struct qeth_card *card)
0da9581d 368{
0da9581d 369 if (card->options.cq == QETH_CQ_ENABLED) {
57a688aa 370 QETH_CARD_TEXT(card, 2, "cqon");
4601ba6c 371 card->qdio.c_q = qeth_alloc_qdio_queue();
0da9581d 372 if (!card->qdio.c_q) {
396c1004
JW		 373 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
374 return -ENOMEM;
0da9581d 375 }
0da9581d 376 } else {
57a688aa 377 QETH_CARD_TEXT(card, 2, "nocq");
0da9581d 378 card->qdio.c_q = NULL;
0da9581d 379 }
396c1004 380 return 0;
0da9581d
EL		 381}
382
cef6ff22 383static void qeth_free_cq(struct qeth_card *card)
0da9581d
EL		 384{
385 if (card->qdio.c_q) {
4601ba6c 386 qeth_free_qdio_queue(card->qdio.c_q);
0da9581d
EL		 387 card->qdio.c_q = NULL;
388 }
0da9581d
EL		 389}
390
cef6ff22
JW		 391static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
392 int delayed)
393{
b3332930
FB		 394 enum iucv_tx_notify n;
395
396 switch (sbalf15) {
397 case 0:
398 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
399 break;
400 case 4:
401 case 16:
402 case 17:
403 case 18:
404 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
405 TX_NOTIFY_UNREACHABLE;
406 break;
407 default:
408 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
409 TX_NOTIFY_GENERALERROR;
410 break;
411 }
412
413 return n;
414}
415
a8c7629c
JW		 416static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
417{
418 if (refcount_dec_and_test(&iob->ref_count)) {
419 kfree(iob->data);
420 kfree(iob);
421 }
422}
40554895
JW		 423static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
424 void *data)
45ca2fd6
JW		 425{
426 ccw->cmd_code = cmd_code;
40554895 427 ccw->flags = flags | CCW_FLAG_SLI;
45ca2fd6
JW		 428 ccw->count = len;
429 ccw->cda = (__u32) __pa(data);
430}
431
17bf8c9b 432static int __qeth_issue_next_read(struct qeth_card *card)
4a71df50 433{
d9b9f40b
JW		 434 struct qeth_cmd_buffer *iob = card->read_cmd;
435 struct qeth_channel *channel = iob->channel;
436 struct ccw1 *ccw = __ccw_from_cmd(iob);
750b1625 437 int rc;
4a71df50 438
847a50fd 439 QETH_CARD_TEXT(card, 5, "issnxrd");
750b1625 440 if (channel->state != CH_STATE_UP)
4a71df50 441 return -EIO;
988a747d 442
d9b9f40b
JW		 443 memset(iob->data, 0, iob->length);
444 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
988a747d 445 iob->callback = qeth_issue_next_read_cb;
d9b9f40b
JW		 446 /* keep the cmd alive after completion: */
447 qeth_get_cmd(iob);
448
847a50fd 449 QETH_CARD_TEXT(card, 6, "noirqpnd");
40554895 450 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
f9e50b02
JW		 451 if (!rc) {
452 channel->active_cmd = iob;
453 } else {
e19e5be8
JW		 454 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
455 rc, CARD_DEVID(card));
7359393f 456 qeth_unlock_channel(card, channel);
c3b2218d 457 qeth_put_cmd(iob);
908abbb5 458 card->read_or_write_problem = 1;
4a71df50 459 qeth_schedule_recovery(card);
4a71df50
FB		 460 }
461 return rc;
462}
463
17bf8c9b
JW		 464static int qeth_issue_next_read(struct qeth_card *card)
465{
466 int ret;
467
468 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
469 ret = __qeth_issue_next_read(card);
470 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
471
472 return ret;
473}
474
308946b0
JW		 475static void qeth_enqueue_cmd(struct qeth_card *card,
476 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 477{
478 spin_lock_irq(&card->lock);
04ea30c8 479 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
0951c6ba
JW		 480 spin_unlock_irq(&card->lock);
481}
482
308946b0
JW		 483static void qeth_dequeue_cmd(struct qeth_card *card,
484 struct qeth_cmd_buffer *iob)
0951c6ba
JW		 485{
486 spin_lock_irq(&card->lock);
04ea30c8 487 list_del(&iob->list_entry);
0951c6ba
JW		 488 spin_unlock_irq(&card->lock);
489}
490
a8c7629c 491static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
0951c6ba 492{
308946b0
JW		 493 iob->rc = reason;
494 complete(&iob->done);
0951c6ba
JW		 495}
496
0d49c06b
JW		 497static void qeth_flush_local_addrs4(struct qeth_card *card)
498{
499 struct qeth_local_addr *addr;
500 struct hlist_node *tmp;
501 unsigned int i;
502
503 spin_lock_irq(&card->local_addrs4_lock);
504 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
505 hash_del_rcu(&addr->hnode);
506 kfree_rcu(addr, rcu);
507 }
508 spin_unlock_irq(&card->local_addrs4_lock);
509}
510
511static void qeth_flush_local_addrs6(struct qeth_card *card)
512{
513 struct qeth_local_addr *addr;
514 struct hlist_node *tmp;
515 unsigned int i;
516
517 spin_lock_irq(&card->local_addrs6_lock);
518 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
519 hash_del_rcu(&addr->hnode);
520 kfree_rcu(addr, rcu);
521 }
522 spin_unlock_irq(&card->local_addrs6_lock);
523}
524
f2bcf9dd 525static void qeth_flush_local_addrs(struct qeth_card *card)
0d49c06b
JW		 526{
527 qeth_flush_local_addrs4(card);
528 qeth_flush_local_addrs6(card);
529}
0d49c06b
JW		 530
531static void qeth_add_local_addrs4(struct qeth_card *card,
532 struct qeth_ipacmd_local_addrs4 *cmd)
533{
534 unsigned int i;
535
536 if (cmd->addr_length !=
537 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
538 dev_err_ratelimited(&card->gdev->dev,
539 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
540 cmd->addr_length);
541 return;
542 }
543
544 spin_lock(&card->local_addrs4_lock);
545 for (i = 0; i < cmd->count; i++) {
546 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
547 struct qeth_local_addr *addr;
548 bool duplicate = false;
549
550 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
551 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
552 duplicate = true;
553 break;
554 }
555 }
556
557 if (duplicate)
558 continue;
559
560 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
561 if (!addr) {
562 dev_err(&card->gdev->dev,
563 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
564 &cmd->addrs[i].addr);
565 continue;
566 }
567
568 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
569 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
570 }
571 spin_unlock(&card->local_addrs4_lock);
572}
573
574static void qeth_add_local_addrs6(struct qeth_card *card,
575 struct qeth_ipacmd_local_addrs6 *cmd)
576{
577 unsigned int i;
578
579 if (cmd->addr_length !=
580 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
581 dev_err_ratelimited(&card->gdev->dev,
582 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
583 cmd->addr_length);
584 return;
585 }
586
587 spin_lock(&card->local_addrs6_lock);
588 for (i = 0; i < cmd->count; i++) {
589 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
590 struct qeth_local_addr *addr;
591 bool duplicate = false;
592
593 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
594 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
595 duplicate = true;
596 break;
597 }
598 }
599
600 if (duplicate)
601 continue;
602
603 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
604 if (!addr) {
605 dev_err(&card->gdev->dev,
606 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
607 &cmd->addrs[i].addr);
608 continue;
609 }
610
611 addr->addr = cmd->addrs[i].addr;
612 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
613 }
614 spin_unlock(&card->local_addrs6_lock);
615}
616
617static void qeth_del_local_addrs4(struct qeth_card *card,
618 struct qeth_ipacmd_local_addrs4 *cmd)
619{
620 unsigned int i;
621
622 if (cmd->addr_length !=
623 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
624 dev_err_ratelimited(&card->gdev->dev,
625 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
626 cmd->addr_length);
627 return;
628 }
629
630 spin_lock(&card->local_addrs4_lock);
631 for (i = 0; i < cmd->count; i++) {
632 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
633 unsigned int key = ipv4_addr_hash(addr->addr);
634 struct qeth_local_addr *tmp;
635
636 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
637 if (tmp->addr.s6_addr32[3] == addr->addr) {
638 hash_del_rcu(&tmp->hnode);
639 kfree_rcu(tmp, rcu);
640 break;
641 }
642 }
643 }
644 spin_unlock(&card->local_addrs4_lock);
645}
646
647static void qeth_del_local_addrs6(struct qeth_card *card,
648 struct qeth_ipacmd_local_addrs6 *cmd)
649{
650 unsigned int i;
651
652 if (cmd->addr_length !=
653 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
654 dev_err_ratelimited(&card->gdev->dev,
655 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
656 cmd->addr_length);
657 return;
658 }
659
660 spin_lock(&card->local_addrs6_lock);
661 for (i = 0; i < cmd->count; i++) {
662 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
663 u32 key = ipv6_addr_hash(&addr->addr);
664 struct qeth_local_addr *tmp;
665
666 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
667 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
668 hash_del_rcu(&tmp->hnode);
669 kfree_rcu(tmp, rcu);
670 break;
671 }
672 }
673 }
674 spin_unlock(&card->local_addrs6_lock);
675}
676
c619e9a6
JW		 677static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
678 struct sk_buff *skb)
679{
680 struct qeth_local_addr *tmp;
681 bool is_local = false;
682 unsigned int key;
683 __be32 next_hop;
684
685 if (hash_empty(card->local_addrs4))
686 return false;
687
688 rcu_read_lock();
17f3a8b5
JW		 689 next_hop = qeth_next_hop_v4_rcu(skb,
690 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
c619e9a6
JW		 691 key = ipv4_addr_hash(next_hop);
692
693 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
694 if (tmp->addr.s6_addr32[3] == next_hop) {
695 is_local = true;
696 break;
697 }
698 }
699 rcu_read_unlock();
700
701 return is_local;
702}
703
704static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
705 struct sk_buff *skb)
706{
707 struct qeth_local_addr *tmp;
708 struct in6_addr *next_hop;
709 bool is_local = false;
710 u32 key;
711
712 if (hash_empty(card->local_addrs6))
713 return false;
714
715 rcu_read_lock();
17f3a8b5
JW		 716 next_hop = qeth_next_hop_v6_rcu(skb,
717 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
c619e9a6
JW		 718 key = ipv6_addr_hash(next_hop);
719
720 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
721 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
722 is_local = true;
723 break;
724 }
725 }
726 rcu_read_unlock();
727
728 return is_local;
729}
730
fb8d2580
JW		 731static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
732{
733 struct qeth_card *card = m->private;
734 struct qeth_local_addr *tmp;
735 unsigned int i;
736
737 rcu_read_lock();
738 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
739 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
740 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
741 seq_printf(m, "%pI6c\n", &tmp->addr);
742 rcu_read_unlock();
743
744 return 0;
745}
746
747DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
748
d11ba0c4 749static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
4a71df50
FB		 750 struct qeth_card *card)
751{
048a7f8b 752 const char *ipa_name;
d11ba0c4 753 int com = cmd->hdr.command;
378ac80d 754
4a71df50 755 ipa_name = qeth_get_ipa_cmd_name(com);
e19e5be8 756
d11ba0c4 757 if (rc)
e19e5be8
JW		 758 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
759 ipa_name, com, CARD_DEVID(card), rc,
760 qeth_get_ipa_msg(rc));
d11ba0c4 761 else
e19e5be8
JW		 762 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
763 ipa_name, com, CARD_DEVID(card));
4a71df50
FB		 764}
765
766static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 767 struct qeth_ipa_cmd *cmd)
4a71df50 768{
847a50fd 769 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 770
771 if (IS_IPA_REPLY(cmd)) {
a8c7629c 772 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
d19b93f4
JW		 773 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
774 return cmd;
775 }
776
777 /* handle unsolicited event: */
778 switch (cmd->hdr.command) {
779 case IPA_CMD_STOPLAN:
780 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
781 dev_err(&card->gdev->dev,
ee909d0b 782 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
84c91482 783 netdev_name(card->dev));
ee909d0b
AW		 784 /* Set offline, then probably fail to set online: */
785 qeth_schedule_recovery(card);
4a71df50 786 } else {
ee909d0b 787 /* stay online for subsequent STARTLAN */
d19b93f4
JW		 788 dev_warn(&card->gdev->dev,
789 "The link for interface %s on CHPID 0x%X failed\n",
84c91482 790 netdev_name(card->dev), card->info.chpid);
d19b93f4 791 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 792 netif_carrier_off(card->dev);
4a71df50 793 }
d19b93f4
JW		 794 return NULL;
795 case IPA_CMD_STARTLAN:
796 dev_info(&card->gdev->dev,
797 "The link for %s on CHPID 0x%X has been restored\n",
84c91482 798 netdev_name(card->dev), card->info.chpid);
d19b93f4
JW		 799 if (card->info.hwtrap)
800 card->info.hwtrap = 2;
801 qeth_schedule_recovery(card);
802 return NULL;
803 case IPA_CMD_SETBRIDGEPORT_IQD:
804 case IPA_CMD_SETBRIDGEPORT_OSA:
805 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
806 if (card->discipline->control_event_handler(card, cmd))
807 return cmd;
808 return NULL;
d19b93f4 809 case IPA_CMD_REGISTER_LOCAL_ADDR:
0d49c06b
JW		 810 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
811 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
812 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
813 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
814
d19b93f4
JW		 815 QETH_CARD_TEXT(card, 3, "irla");
816 return NULL;
817 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
0d49c06b
JW		 818 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
819 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
820 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
821 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
822
d19b93f4
JW		 823 QETH_CARD_TEXT(card, 3, "urla");
824 return NULL;
825 default:
826 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
827 return cmd;
4a71df50 828 }
4a71df50
FB		 829}
830
7fb7fe5c 831static void qeth_clear_ipacmd_list(struct qeth_card *card)
4a71df50 832{
308946b0 833 struct qeth_cmd_buffer *iob;
4a71df50
FB		 834 unsigned long flags;
835
847a50fd 836 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 837
838 spin_lock_irqsave(&card->lock, flags);
04ea30c8 839 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
dbdd04d3 840 qeth_notify_cmd(iob, -ECANCELED);
4a71df50
FB		 841 spin_unlock_irqrestore(&card->lock, flags);
842}
4a71df50 843
5113fec0
UB		 844static int qeth_check_idx_response(struct qeth_card *card,
845 unsigned char *buffer)
4a71df50 846{
d11ba0c4 847 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
2e3d7fa5 848 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
e19e5be8 849 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 850 buffer[4]);
847a50fd
CO		 851 QETH_CARD_TEXT(card, 2, "ckidxres");
852 QETH_CARD_TEXT(card, 2, " idxterm");
2e3d7fa5
JW		 853 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
854 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
855 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
5113fec0 856 dev_err(&card->gdev->dev,
2e3d7fa5
JW		 857 "The device does not support the configured transport mode\n");
858 return -EPROTONOSUPPORT;
5113fec0 859 }
4a71df50
FB		 860 return -EIO;
861 }
862 return 0;
863}
864
8f6637b8 865static void qeth_release_buffer_cb(struct qeth_card *card,
12fc286f
JW		 866 struct qeth_cmd_buffer *iob,
867 unsigned int data_length)
8f6637b8 868{
c3b2218d 869 qeth_put_cmd(iob);
8f6637b8
JW		 870}
871
54daaca7
JW		 872static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
873{
308946b0 874 qeth_notify_cmd(iob, rc);
c3b2218d 875 qeth_put_cmd(iob);
4a71df50 876}
4a71df50 877
a8c7629c
JW		 878static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
879 unsigned int length,
880 unsigned int ccws, long timeout)
40554895
JW		 881{
882 struct qeth_cmd_buffer *iob;
883
884 if (length > QETH_BUFSIZE)
885 return NULL;
886
887 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
888 if (!iob)
889 return NULL;
890
891 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
892 GFP_KERNEL | GFP_DMA);
893 if (!iob->data) {
894 kfree(iob);
895 return NULL;
896 }
897
308946b0
JW		 898 init_completion(&iob->done);
899 spin_lock_init(&iob->lock);
d9b9f40b 900 refcount_set(&iob->ref_count, 1);
40554895
JW		 901 iob->channel = channel;
902 iob->timeout = timeout;
903 iob->length = length;
904 return iob;
905}
906
988a747d 907static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 908 struct qeth_cmd_buffer *iob,
909 unsigned int data_length)
4a71df50 910{
308946b0 911 struct qeth_cmd_buffer *request = NULL;
d19b93f4 912 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba 913 struct qeth_reply *reply = NULL;
308946b0 914 struct qeth_cmd_buffer *tmp;
4a71df50 915 unsigned long flags;
5113fec0 916 int rc = 0;
4a71df50 917
847a50fd 918 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 919 rc = qeth_check_idx_response(card, iob->data);
920 switch (rc) {
921 case 0:
922 break;
923 case -EIO:
5113fec0 924 qeth_schedule_recovery(card);
df561f66 925 fallthrough;
5113fec0 926 default:
2e3d7fa5 927 qeth_clear_ipacmd_list(card);
3a5bad64 928 goto err_idx;
4a71df50
FB		 929 }
930
7f92316c
JW		 931 cmd = __ipa_reply(iob);
932 if (cmd) {
d19b93f4 933 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 934 if (!cmd)
935 goto out;
4a71df50
FB		 936 }
937
0951c6ba 938 /* match against pending cmd requests */
4a71df50 939 spin_lock_irqsave(&card->lock, flags);
04ea30c8 940 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
7f92316c 941 if (tmp->match && tmp->match(tmp, iob)) {
308946b0 942 request = tmp;
0951c6ba 943 /* take the object outside the lock */
308946b0 944 qeth_get_cmd(request);
0951c6ba 945 break;
4a71df50
FB		 946 }
947 }
948 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba 949
308946b0 950 if (!request)
0951c6ba
JW		 951 goto out;
952
308946b0 953 reply = &request->reply;
4b7ae122
JW		 954 if (!reply->callback) {
955 rc = 0;
072f7940
JW		 956 goto no_callback;
957 }
958
308946b0
JW		 959 spin_lock_irqsave(&request->lock, flags);
960 if (request->rc)
072f7940 961 /* Bail out when the requestor has already left: */
308946b0 962 rc = request->rc;
7c5f8ffb
JW		 963 else
964 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
965 (unsigned long)iob);
308946b0 966 spin_unlock_irqrestore(&request->lock, flags);
0951c6ba 967
072f7940 968no_callback:
61e04465 969 if (rc <= 0)
308946b0
JW		 970 qeth_notify_cmd(request, rc);
971 qeth_put_cmd(request);
4a71df50
FB		 972out:
973 memcpy(&card->seqno.pdu_hdr_ack,
974 QETH_PDU_HEADER_SEQ_NO(iob->data),
975 QETH_SEQ_NO_LENGTH);
7cbc9e8f 976 __qeth_issue_next_read(card);
3a5bad64
JW		 977err_idx:
978 qeth_put_cmd(iob);
4a71df50
FB		 979}
980
4a71df50
FB		 981static int qeth_set_thread_start_bit(struct qeth_card *card,
982 unsigned long thread)
983{
984 unsigned long flags;
7005b754 985 int rc = 0;
4a71df50
FB		 986
987 spin_lock_irqsave(&card->thread_mask_lock, flags);
7005b754
JW		 988 if (!(card->thread_allowed_mask & thread))
989 rc = -EPERM;
990 else if (card->thread_start_mask & thread)
991 rc = -EBUSY;
992 else
993 card->thread_start_mask |= thread;
4a71df50 994 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
7005b754
JW		 995
996 return rc;
4a71df50
FB		 997}
998
91003f35
JW		 999static void qeth_clear_thread_start_bit(struct qeth_card *card,
1000 unsigned long thread)
4a71df50
FB		 1001{
1002 unsigned long flags;
1003
1004 spin_lock_irqsave(&card->thread_mask_lock, flags);
1005 card->thread_start_mask &= ~thread;
1006 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1007 wake_up(&card->wait_q);
1008}
4a71df50 1009
91003f35
JW		 1010static void qeth_clear_thread_running_bit(struct qeth_card *card,
1011 unsigned long thread)
4a71df50
FB		 1012{
1013 unsigned long flags;
1014
1015 spin_lock_irqsave(&card->thread_mask_lock, flags);
1016 card->thread_running_mask &= ~thread;
1017 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 1018 wake_up_all(&card->wait_q);
4a71df50 1019}
4a71df50
FB		 1020
1021static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1022{
1023 unsigned long flags;
1024 int rc = 0;
1025
1026 spin_lock_irqsave(&card->thread_mask_lock, flags);
1027 if (card->thread_start_mask & thread) {
1028 if ((card->thread_allowed_mask & thread) &&
1029 !(card->thread_running_mask & thread)) {
1030 rc = 1;
1031 card->thread_start_mask &= ~thread;
1032 card->thread_running_mask |= thread;
1033 } else
1034 rc = -EPERM;
1035 }
1036 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1037 return rc;
1038}
1039
91003f35 1040static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
4a71df50
FB		 1041{
1042 int rc = 0;
1043
1044 wait_event(card->wait_q,
1045 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1046 return rc;
1047}
4a71df50 1048
7005b754 1049int qeth_schedule_recovery(struct qeth_card *card)
4a71df50 1050{
7005b754
JW		 1051 int rc;
1052
847a50fd 1053 QETH_CARD_TEXT(card, 2, "startrec");
7005b754
JW		 1054
1055 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1056 if (!rc)
4a71df50 1057 schedule_work(&card->kernel_thread_starter);
7005b754
JW		 1058
1059 return rc;
4a71df50 1060}
4a71df50 1061
8d908eb0
JW		 1062static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1063 struct irb *irb)
4a71df50
FB		 1064{
1065 int dstat, cstat;
1066 char *sense;
1067
1068 sense = (char *) irb->ecw;
23d805b6
PO		 1069 cstat = irb->scsw.cmd.cstat;
1070 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 1071
1072 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1073 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1074 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 1075 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 1076 dev_warn(&cdev->dev, "The qeth device driver "
1077 "failed to recover an error on the device\n");
e19e5be8
JW		 1078 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1079 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 1080 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1081 16, 1, irb, 64, 1);
2f3c269d 1082 return -EIO;
4a71df50
FB		 1083 }
1084
1085 if (dstat & DEV_STAT_UNIT_CHECK) {
1086 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1087 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 1088 QETH_CARD_TEXT(card, 2, "REVIND");
2f3c269d 1089 return -EIO;
4a71df50
FB		 1090 }
1091 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1092 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 1093 QETH_CARD_TEXT(card, 2, "CMDREJi");
2f3c269d 1094 return -EIO;
4a71df50
FB		 1095 }
1096 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 1097 QETH_CARD_TEXT(card, 2, "AFFE");
2f3c269d 1098 return -EIO;
4a71df50
FB		 1099 }
1100 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 1101 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 1102 return 0;
1103 }
847a50fd 1104 QETH_CARD_TEXT(card, 2, "DGENCHK");
378ac80d 1105 return -EIO;
4a71df50
FB		 1106 }
1107 return 0;
1108}
1109
54daaca7 1110static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 1111 struct irb *irb)
4a71df50 1112{
8d908eb0 1113 if (!IS_ERR(irb))
4a71df50
FB		 1114 return 0;
1115
1116 switch (PTR_ERR(irb)) {
1117 case -EIO:
e19e5be8
JW		 1118 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1119 CCW_DEVID(cdev));
847a50fd
CO		 1120 QETH_CARD_TEXT(card, 2, "ckirberr");
1121 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 1122 return -EIO;
4a71df50 1123 case -ETIMEDOUT:
74eacdb9
FB		 1124 dev_warn(&cdev->dev, "A hardware operation timed out"
1125 " on the device\n");
847a50fd
CO		 1126 QETH_CARD_TEXT(card, 2, "ckirberr");
1127 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 1128 return -ETIMEDOUT;
4a71df50 1129 default:
e19e5be8
JW		 1130 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1131 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 1132 QETH_CARD_TEXT(card, 2, "ckirberr");
1133 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 1134 return PTR_ERR(irb);
4a71df50 1135 }
4a71df50
FB		 1136}
1137
1138static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1139 struct irb *irb)
1140{
1141 int rc;
1142 int cstat, dstat;
db71bbbd 1143 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1144 struct ccwgroup_device *gdev;
4a71df50
FB		 1145 struct qeth_channel *channel;
1146 struct qeth_card *card;
4a71df50 1147
8d908eb0
JW		 1148 /* while we hold the ccwdev lock, this stays valid: */
1149 gdev = dev_get_drvdata(&cdev->dev);
1150 card = dev_get_drvdata(&gdev->dev);
4a71df50 1151
847a50fd
CO		 1152 QETH_CARD_TEXT(card, 5, "irq");
1153
4a71df50
FB		 1154 if (card->read.ccwdev == cdev) {
1155 channel = &card->read;
847a50fd 1156 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1157 } else if (card->write.ccwdev == cdev) {
1158 channel = &card->write;
847a50fd 1159 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1160 } else {
1161 channel = &card->data;
847a50fd 1162 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1163 }
db71bbbd 1164
f9e50b02
JW		 1165 if (intparm == 0) {
1166 QETH_CARD_TEXT(card, 5, "irqunsol");
1167 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1168 QETH_CARD_TEXT(card, 5, "irqunexp");
1169
1170 dev_err(&cdev->dev,
1171 "Received IRQ with intparm %lx, expected %px\n",
1172 intparm, channel->active_cmd);
1173 if (channel->active_cmd)
1174 qeth_cancel_cmd(channel->active_cmd, -EIO);
1175 } else {
1176 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1177 }
1178
7359393f 1179 qeth_unlock_channel(card, channel);
db71bbbd 1180
2066e1db 1181 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1182 if (rc) {
db71bbbd
JW		 1183 /* IO was terminated, free its resources. */
1184 if (iob)
54daaca7 1185 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1186 return;
1187 }
1188
7359393f 1189 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
4a71df50 1190 channel->state = CH_STATE_STOPPED;
7359393f
JW		 1191 wake_up(&card->wait_q);
1192 }
4a71df50 1193
7359393f 1194 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
4a71df50 1195 channel->state = CH_STATE_HALTED;
7359393f
JW		 1196 wake_up(&card->wait_q);
1197 }
4a71df50 1198
f9e50b02
JW		 1199 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1200 SCSW_FCTL_HALT_FUNC))) {
1201 qeth_cancel_cmd(iob, -ECANCELED);
1202 iob = NULL;
4a71df50 1203 }
db71bbbd
JW		 1204
1205 cstat = irb->scsw.cmd.cstat;
1206 dstat = irb->scsw.cmd.dstat;
1207
4a71df50
FB		 1208 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1209 (dstat & DEV_STAT_UNIT_CHECK) ||
1210 (cstat)) {
1211 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1212 dev_warn(&channel->ccwdev->dev,
1213 "The qeth device driver failed to recover "
1214 "an error on the device\n");
e19e5be8
JW		 1215 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1216 CCW_DEVID(channel->ccwdev), cstat,
1217 dstat);
4a71df50
FB		 1218 print_hex_dump(KERN_WARNING, "qeth: irb ",
1219 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1220 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1221 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1222 }
2066e1db 1223
8d908eb0 1224 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1225 if (rc) {
a6c3d939 1226 card->read_or_write_problem = 1;
5065b2dd 1227 if (iob)
54daaca7 1228 qeth_cancel_cmd(iob, rc);
28a7e4c9 1229 qeth_clear_ipacmd_list(card);
4a71df50 1230 qeth_schedule_recovery(card);
7359393f 1231 return;
4a71df50
FB		 1232 }
1233 }
1234
12fc286f
JW		 1235 if (iob) {
1236 /* sanity check: */
1237 if (irb->scsw.cmd.count > iob->length) {
1238 qeth_cancel_cmd(iob, -EIO);
7359393f 1239 return;
12fc286f
JW		 1240 }
1241 if (iob->callback)
1242 iob->callback(card, iob,
1243 iob->length - irb->scsw.cmd.count);
1244 }
4a71df50
FB		 1245}
1246
b3332930 1247static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1248 struct qeth_qdio_out_buffer *buf,
b3332930 1249 enum iucv_tx_notify notification)
4a71df50 1250{
4a71df50
FB		 1251 struct sk_buff *skb;
1252
dc149e37 1253 skb_queue_walk(&buf->skb_list, skb) {
80bc97aa
JW		 1254 struct sock *sk = skb->sk;
1255
b3332930
FB		 1256 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1257 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
80bc97aa
JW		 1258 if (sk && sk->sk_family == PF_IUCV)
1259 iucv_sk(sk)->sk_txnotify(sk, notification);
b3332930 1260 }
b3332930
FB		 1261}
1262
6b7ec41e
JW		 1263static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1264 struct qeth_qdio_out_buffer *buf, bool error,
85e537d8 1265 int budget)
b3332930 1266{
104b4859
JW		 1267 struct sk_buff *skb;
1268
eeac0e20
JW		 1269 /* Empty buffer? */
1270 if (buf->next_element_to_fill == 0)
1271 return;
1272
1273 QETH_TXQ_STAT_INC(queue, bufs);
1274 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1ab2f8c6
JW		 1275 if (error) {
1276 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1277 } else {
1278 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1279 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1280 }
1281
eeac0e20
JW		 1282 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1283 unsigned int bytes = qdisc_pkt_len(skb);
1284 bool is_tso = skb_is_gso(skb);
1285 unsigned int packets;
1286
1287 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1ab2f8c6 1288 if (!error) {
eeac0e20
JW		 1289 if (skb->ip_summed == CHECKSUM_PARTIAL)
1290 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1291 if (skb_is_nonlinear(skb))
1292 QETH_TXQ_STAT_INC(queue, skbs_sg);
1293 if (is_tso) {
1294 QETH_TXQ_STAT_INC(queue, skbs_tso);
1295 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1296 }
1297 }
6a3123d0 1298
85e537d8 1299 napi_consume_skb(skb, budget);
eeac0e20 1300 }
b3332930
FB		 1301}
1302
1303static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1304 struct qeth_qdio_out_buffer *buf,
85e537d8 1305 bool error, int budget)
b3332930
FB		 1306{
1307 int i;
1308
1309 /* is PCI flag set on buffer? */
e872d0c1 1310 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
b3332930 1311 atomic_dec(&queue->set_pci_flags_count);
e872d0c1
JW		 1312 QETH_TXQ_STAT_INC(queue, completion_irq);
1313 }
b3332930 1314
6b7ec41e 1315 qeth_tx_complete_buf(queue, buf, error, budget);
3b346c18 1316
4e26c5fe 1317 for (i = 0; i < queue->max_elements; ++i) {
2db01da8
JW		 1318 void *data = phys_to_virt(buf->buffer->element[i].addr);
1319
bb7032dd 1320 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
2db01da8 1321 kmem_cache_free(qeth_core_header_cache, data);
4a71df50 1322 }
3b346c18 1323
4e26c5fe 1324 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1325 buf->next_element_to_fill = 0;
1ab2f8c6 1326 buf->frames = 0;
96bd6c94 1327 buf->bytes = 0;
3b346c18 1328 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1329}
1330
396c1004
JW		 1331static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1332{
1333 if (buf->aob)
a18c28f0 1334 kmem_cache_free(qeth_qaob_cache, buf->aob);
396c1004
JW		 1335 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1336}
1337
c20383ad
JW		 1338static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1339 struct qeth_qdio_out_q *queue,
ad4bbd72 1340 bool drain, int budget)
c20383ad
JW		 1341{
1342 struct qeth_qdio_out_buffer *buf, *tmp;
1343
1344 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
838e4cc8 1345 struct qeth_qaob_priv1 *priv;
f875d880
JW		 1346 struct qaob *aob = buf->aob;
1347 enum iucv_tx_notify notify;
1348 unsigned int i;
1349
838e4cc8
JW		 1350 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1351 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
c20383ad
JW		 1352 QETH_CARD_TEXT(card, 5, "fp");
1353 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1354
f875d880
JW		 1355 notify = drain ? TX_NOTIFY_GENERALERROR :
1356 qeth_compute_cq_notification(aob->aorc, 1);
1357 qeth_notify_skbs(queue, buf, notify);
6b7ec41e 1358 qeth_tx_complete_buf(queue, buf, drain, budget);
c20383ad 1359
f875d880
JW		 1360 for (i = 0;
1361 i < aob->sb_count && i < queue->max_elements;
1362 i++) {
1363 void *data = phys_to_virt(aob->sba[i]);
1364
bb7032dd 1365 if (test_bit(i, buf->from_kmem_cache) && data)
f875d880
JW		 1366 kmem_cache_free(qeth_core_header_cache,
1367 data);
1368 }
1369
c20383ad 1370 list_del(&buf->list_entry);
396c1004 1371 qeth_free_out_buf(buf);
c20383ad
JW		 1372 }
1373 }
1374}
1375
41c47da3 1376static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1377{
1378 int j;
1379
ad4bbd72 1380 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
c20383ad 1381
0da9581d
EL		 1382 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1383 if (!q->bufs[j])
1384 continue;
c20383ad 1385
85e537d8 1386 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d 1387 if (free) {
396c1004 1388 qeth_free_out_buf(q->bufs[j]);
0da9581d
EL		 1389 q->bufs[j] = NULL;
1390 }
1391 }
4a71df50
FB		 1392}
1393
f2bcf9dd 1394static void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1395{
0da9581d 1396 int i;
4a71df50 1397
847a50fd 1398 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1399 /* clear outbound buffers to free skbs */
0da9581d 1400 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1401 if (card->qdio.out_qs[i])
1402 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1403 }
4a71df50 1404}
4a71df50 1405
bb5ab541 1406static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1407{
1c103cf8 1408 unsigned int max = single ? 1 : card->dev->num_tx_queues;
bd966839 1409
1c103cf8 1410 if (card->qdio.no_out_queues == max)
bb5ab541 1411 return;
725b9c04 1412
73dc2daf 1413 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1414 qeth_free_qdio_queues(card);
73dc2daf 1415
1c103cf8 1416 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
73dc2daf
JW		 1417 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1418
1c103cf8 1419 card->qdio.no_out_queues = max;
725b9c04
SO		 1420}
1421
a4cdc9ba 1422static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1423{
4a71df50 1424 struct ccw_device *ccwdev;
ded27d8d 1425 struct channel_path_desc_fmt0 *chp_dsc;
4a71df50 1426
57a688aa 1427 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1428
1429 ccwdev = card->data.ccwdev;
725b9c04
SO		 1430 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1431 if (!chp_dsc)
a4cdc9ba 1432 return -ENOMEM;
725b9c04
SO		 1433
1434 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1435
73dc2daf
JW		 1436 if (IS_OSD(card) || IS_OSX(card))
1437 /* CHPP field bit 6 == 1 -> single queue */
bb5ab541 1438 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1439
725b9c04 1440 kfree(chp_dsc);
57a688aa
JW		 1441 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1442 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bb5ab541 1443 return 0;
4a71df50
FB		 1444}
1445
1446static void qeth_init_qdio_info(struct qeth_card *card)
1447{
57a688aa 1448 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1449 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1450 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1451 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1452
4a71df50
FB		 1453 /* inbound */
1454 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1455 if (IS_IQD(card))
dcf4ae2d
FB		 1456 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1457 else
1458 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1459 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1460 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1461 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1462}
1463
95f4d8b7 1464static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1465{
1466 card->options.route4.type = NO_ROUTER;
1467 card->options.route6.type = NO_ROUTER;
d64ecc22 1468 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1469 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1470 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1471}
1472
1473static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1474{
1475 unsigned long flags;
1476 int rc = 0;
1477
1478 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1479 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1480 (u8) card->thread_start_mask,
1481 (u8) card->thread_allowed_mask,
1482 (u8) card->thread_running_mask);
1483 rc = (card->thread_start_mask & thread);
1484 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1485 return rc;
1486}
1487
91003f35 1488static int qeth_do_reset(void *data);
4a71df50
FB		 1489static void qeth_start_kernel_thread(struct work_struct *work)
1490{
3f36b890 1491 struct task_struct *ts;
4a71df50
FB		 1492 struct qeth_card *card = container_of(work, struct qeth_card,
1493 kernel_thread_starter);
378ac80d 1494 QETH_CARD_TEXT(card, 2, "strthrd");
4a71df50
FB		 1495
1496 if (card->read.state != CH_STATE_UP &&
1497 card->write.state != CH_STATE_UP)
1498 return;
3f36b890 1499 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
91003f35 1500 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
3f36b890
FB		 1501 if (IS_ERR(ts)) {
1502 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1503 qeth_clear_thread_running_bit(card,
1504 QETH_RECOVER_THREAD);
1505 }
1506 }
4a71df50
FB		 1507}
1508
bca51650 1509static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1510static void qeth_setup_card(struct qeth_card *card)
4a71df50 1511{
57a688aa 1512 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1513
95f4d8b7 1514 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1515 card->state = CARD_STATE_DOWN;
4a71df50 1516 spin_lock_init(&card->lock);
4a71df50 1517 spin_lock_init(&card->thread_mask_lock);
c4949f07 1518 mutex_init(&card->conf_mutex);
9dc48ccc 1519 mutex_init(&card->discipline_mutex);
4a71df50 1520 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1521 INIT_LIST_HEAD(&card->cmd_waiter_list);
1522 init_waitqueue_head(&card->wait_q);
95f4d8b7 1523 qeth_set_initial_options(card);
4a71df50
FB		 1524 /* IP address takeover */
1525 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1526 qeth_init_qdio_info(card);
b3332930 1527 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0973292f 1528 hash_init(card->rx_mode_addrs);
0d49c06b
JW		 1529 hash_init(card->local_addrs4);
1530 hash_init(card->local_addrs6);
1531 spin_lock_init(&card->local_addrs4_lock);
1532 spin_lock_init(&card->local_addrs6_lock);
4a71df50
FB		 1533}
1534
6bcac508
MS		 1535static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1536{
1537 struct qeth_card *card = container_of(slr, struct qeth_card,
1538 qeth_service_level);
0d788c7d
KDW		 1539 if (card->info.mcl_level[0])
1540 seq_printf(m, "qeth: %s firmware level %s\n",
1541 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1542}
1543
121ca39a 1544static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1545{
1546 struct qeth_card *card;
1547
d11ba0c4 1548 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1549 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1550 if (!card)
76b11f8e 1551 goto out;
d11ba0c4 1552 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1553
1554 card->gdev = gdev;
a2eb0ad5 1555 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1556 CARD_RDEV(card) = gdev->cdev[0];
1557 CARD_WDEV(card) = gdev->cdev[1];
1558 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1559
7686e4b6
JW		 1560 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1561 dev_name(&gdev->dev));
c0a2e4d1
JW		 1562 if (!card->event_wq)
1563 goto out_wq;
d9b9f40b
JW		 1564
1565 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1566 if (!card->read_cmd)
1567 goto out_read_cmd;
c3b2218d 1568
fb8d2580
JW		 1569 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1570 qeth_debugfs_root);
1571 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1572 &qeth_debugfs_local_addr_fops);
1573
6bcac508
MS		 1574 card->qeth_service_level.seq_print = qeth_core_sl_print;
1575 register_service_level(&card->qeth_service_level);
4a71df50 1576 return card;
76b11f8e 1577
d9b9f40b 1578out_read_cmd:
c0a2e4d1
JW		 1579 destroy_workqueue(card->event_wq);
1580out_wq:
a2eb0ad5 1581 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1582 kfree(card);
1583out:
1584 return NULL;
4a71df50
FB		 1585}
1586
8d908eb0
JW		 1587static int qeth_clear_channel(struct qeth_card *card,
1588 struct qeth_channel *channel)
4a71df50 1589{
4a71df50
FB		 1590 int rc;
1591
847a50fd 1592 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1593 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1594 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1595 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1596
1597 if (rc)
1598 return rc;
1599 rc = wait_event_interruptible_timeout(card->wait_q,
1600 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1601 if (rc == -ERESTARTSYS)
1602 return rc;
1603 if (channel->state != CH_STATE_STOPPED)
1604 return -ETIME;
1605 channel->state = CH_STATE_DOWN;
1606 return 0;
1607}
1608
8d908eb0
JW		 1609static int qeth_halt_channel(struct qeth_card *card,
1610 struct qeth_channel *channel)
4a71df50 1611{
4a71df50
FB		 1612 int rc;
1613
847a50fd 1614 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1615 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1616 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1617 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1618
1619 if (rc)
1620 return rc;
1621 rc = wait_event_interruptible_timeout(card->wait_q,
1622 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1623 if (rc == -ERESTARTSYS)
1624 return rc;
1625 if (channel->state != CH_STATE_HALTED)
1626 return -ETIME;
1627 return 0;
1628}
1629
b7ea041b 1630static int qeth_stop_channel(struct qeth_channel *channel)
f9e50b02
JW		 1631{
1632 struct ccw_device *cdev = channel->ccwdev;
1633 int rc;
1634
1635 rc = ccw_device_set_offline(cdev);
1636
1637 spin_lock_irq(get_ccwdev_lock(cdev));
3518ae76 1638 if (channel->active_cmd)
f9e50b02
JW		 1639 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1640 channel->active_cmd);
3518ae76 1641
871602b1 1642 cdev->handler = NULL;
f9e50b02
JW		 1643 spin_unlock_irq(get_ccwdev_lock(cdev));
1644
1645 return rc;
1646}
f9e50b02 1647
871602b1
JW		 1648static int qeth_start_channel(struct qeth_channel *channel)
1649{
1650 struct ccw_device *cdev = channel->ccwdev;
1651 int rc;
1652
1653 channel->state = CH_STATE_DOWN;
3518ae76 1654 xchg(&channel->active_cmd, NULL);
871602b1
JW		 1655
1656 spin_lock_irq(get_ccwdev_lock(cdev));
1657 cdev->handler = qeth_irq;
1658 spin_unlock_irq(get_ccwdev_lock(cdev));
1659
1660 rc = ccw_device_set_online(cdev);
1661 if (rc)
1662 goto err;
1663
1664 return 0;
1665
1666err:
1667 spin_lock_irq(get_ccwdev_lock(cdev));
1668 cdev->handler = NULL;
1669 spin_unlock_irq(get_ccwdev_lock(cdev));
1670 return rc;
1671}
1672
4a71df50
FB		 1673static int qeth_halt_channels(struct qeth_card *card)
1674{
1675 int rc1 = 0, rc2 = 0, rc3 = 0;
1676
847a50fd 1677 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1678 rc1 = qeth_halt_channel(card, &card->read);
1679 rc2 = qeth_halt_channel(card, &card->write);
1680 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1681 if (rc1)
1682 return rc1;
1683 if (rc2)
1684 return rc2;
1685 return rc3;
1686}
1687
1688static int qeth_clear_channels(struct qeth_card *card)
1689{
1690 int rc1 = 0, rc2 = 0, rc3 = 0;
1691
847a50fd 1692 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1693 rc1 = qeth_clear_channel(card, &card->read);
1694 rc2 = qeth_clear_channel(card, &card->write);
1695 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1696 if (rc1)
1697 return rc1;
1698 if (rc2)
1699 return rc2;
1700 return rc3;
1701}
1702
1703static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1704{
1705 int rc = 0;
1706
847a50fd 1707 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1708
1709 if (halt)
1710 rc = qeth_halt_channels(card);
1711 if (rc)
1712 return rc;
1713 return qeth_clear_channels(card);
1714}
1715
f2bcf9dd 1716static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
4a71df50
FB		 1717{
1718 int rc = 0;
1719
847a50fd 1720 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1721 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1722 QETH_QDIO_CLEANING)) {
1723 case QETH_QDIO_ESTABLISHED:
379ac99e 1724 if (IS_IQD(card))
cc961d40 1725 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1726 QDIO_FLAG_CLEANUP_USING_HALT);
1727 else
cc961d40 1728 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1729 QDIO_FLAG_CLEANUP_USING_CLEAR);
1730 if (rc)
847a50fd 1731 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1732 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1733 break;
1734 case QETH_QDIO_CLEANING:
1735 return rc;
1736 default:
1737 break;
1738 }
1739 rc = qeth_clear_halt_card(card, use_halt);
1740 if (rc)
847a50fd 1741 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1742 return rc;
1743}
4a71df50 1744
615dff22
JW		 1745static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1746{
1747 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1748 struct diag26c_vnic_resp *response = NULL;
1749 struct diag26c_vnic_req *request = NULL;
1750 struct ccw_dev_id id;
1751 char userid[80];
1752 int rc = 0;
1753
57a688aa 1754 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1755
1756 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1757 if (rc)
1758 goto out;
1759
1760 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1761 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1762 if (!request || !response) {
1763 rc = -ENOMEM;
1764 goto out;
1765 }
1766
1767 ccw_device_get_id(CARD_RDEV(card), &id);
1768 request->resp_buf_len = sizeof(*response);
1769 request->resp_version = DIAG26C_VERSION6_VM65918;
1770 request->req_format = DIAG26C_VNIC_INFO;
1771 ASCEBC(userid, 8);
1772 memcpy(&request->sys_name, userid, 8);
1773 request->devno = id.devno;
1774
1775 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1776 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1777 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1778 if (rc)
1779 goto out;
1780 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1781
1782 if (request->resp_buf_len < sizeof(*response) ||
1783 response->version != request->resp_version) {
1784 rc = -EIO;
1785 goto out;
1786 }
1787
1788 if (response->protocol == VNIC_INFO_PROT_L2)
1789 disc = QETH_DISCIPLINE_LAYER2;
1790 else if (response->protocol == VNIC_INFO_PROT_L3)
1791 disc = QETH_DISCIPLINE_LAYER3;
1792
1793out:
1794 kfree(response);
1795 kfree(request);
1796 if (rc)
57a688aa 1797 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1798 return disc;
1799}
1800
c70eb09d
JW		 1801/* Determine whether the device requires a specific layer discipline */
1802static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1803{
615dff22
JW		 1804 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1805
a8c7629c 1806 if (IS_OSM(card))
615dff22 1807 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1808 else if (IS_VM_NIC(card))
1809 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1810 qeth_vm_detect_layer(card);
615dff22
JW		 1811
1812 switch (disc) {
1813 case QETH_DISCIPLINE_LAYER2:
57a688aa 1814 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1815 break;
1816 case QETH_DISCIPLINE_LAYER3:
57a688aa 1817 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1818 break;
1819 default:
57a688aa 1820 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1821 }
1822
615dff22 1823 return disc;
c70eb09d
JW		 1824}
1825
09ac887f 1826static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1827{
57a688aa 1828 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1829
09ac887f 1830 if (card->info.use_v1_blkt) {
a60389ab
EL		 1831 card->info.blkt.time_total = 0;
1832 card->info.blkt.inter_packet = 0;
1833 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1834 } else {
1835 card->info.blkt.time_total = 250;
1836 card->info.blkt.inter_packet = 5;
1837 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1838 }
4a71df50
FB		 1839}
1840
7f23d55f 1841static void qeth_idx_init(struct qeth_card *card)
4a71df50 1842{
7f23d55f
JW		 1843 memset(&card->seqno, 0, sizeof(card->seqno));
1844
4a71df50
FB		 1845 card->token.issuer_rm_w = 0x00010103UL;
1846 card->token.cm_filter_w = 0x00010108UL;
1847 card->token.cm_connection_w = 0x0001010aUL;
1848 card->token.ulp_filter_w = 0x0001010bUL;
1849 card->token.ulp_connection_w = 0x0001010dUL;
4a71df50 1850
5113fec0
UB		 1851 switch (card->info.type) {
1852 case QETH_CARD_TYPE_IQD:
6298263a 1853 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1854 break;
1855 case QETH_CARD_TYPE_OSD:
1856 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1857 break;
1858 default:
1859 break;
4a71df50
FB		 1860 }
1861}
1862
48ce6f89 1863static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1864 struct qeth_cmd_buffer *iob)
48ce6f89 1865{
48ce6f89
JW		 1866 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1867 QETH_SEQ_NO_LENGTH);
1868 if (iob->channel == &card->write)
1869 card->seqno.trans_hdr++;
1870}
1871
4a71df50
FB		 1872static int qeth_peer_func_level(int level)
1873{
1874 if ((level & 0xff) == 8)
1875 return (level & 0xff) + 0x400;
1876 if (((level >> 8) & 3) == 1)
1877 return (level & 0xff) + 0x200;
1878 return level;
1879}
1880
48ce6f89 1881static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1882 struct qeth_cmd_buffer *iob)
4a71df50 1883{
c3b2218d 1884 qeth_idx_finalize_cmd(card, iob);
4a71df50 1885
4a71df50
FB		 1886 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1887 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1888 card->seqno.pdu_hdr++;
1889 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1890 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1891
48ce6f89 1892 iob->callback = qeth_release_buffer_cb;
4a71df50 1893}
4a71df50 1894
7f92316c
JW		 1895static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1896 struct qeth_cmd_buffer *reply)
1897{
1898 /* MPC cmds are issued strictly in sequence. */
1899 return !IS_IPA(reply->data);
1900}
1901
f19f8fd2 1902static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
94ae20f7 1903 const void *data,
f19f8fd2 1904 unsigned int data_length)
1273a800
JW		 1905{
1906 struct qeth_cmd_buffer *iob;
1907
f19f8fd2
JW		 1908 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1909 if (!iob)
1910 return NULL;
1911
1912 memcpy(iob->data, data, data_length);
1913 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1914 iob->data);
1915 iob->finalize = qeth_mpc_finalize_cmd;
7f92316c 1916 iob->match = qeth_mpc_match_reply;
1273a800
JW		 1917 return iob;
1918}
1919
efbbc1d5
EC		 1920/**
1921 * qeth_send_control_data() - send control command to the card
1922 * @card: qeth_card structure pointer
efbbc1d5
EC		 1923 * @iob: qeth_cmd_buffer pointer
1924 * @reply_cb: callback function pointer
7ffaef82
HC		 1925 * cb_card: pointer to the qeth_card structure
1926 * cb_reply: pointer to the qeth_reply structure
1927 * cb_cmd: pointer to the original iob for non-IPA
efbbc1d5
EC		 1928 * commands, or to the qeth_ipa_cmd structure
1929 * for the IPA commands.
1930 * @reply_param: private pointer passed to the callback
1931 *
efbbc1d5
EC		 1932 * Callback function gets called one or more times, with cb_cmd
1933 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 1934 * function must return
1935 * > 0 if more reply blocks are expected,
1936 * 0 if the last or only reply block is received, and
1937 * < 0 on error.
1938 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 1939 * field 'param' of the structure qeth_reply.
1940 */
1941
c3b2218d 1942static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 1943 struct qeth_cmd_buffer *iob,
1944 int (*reply_cb)(struct qeth_card *cb_card,
1945 struct qeth_reply *cb_reply,
1946 unsigned long cb_cmd),
1947 void *reply_param)
4a71df50 1948{
750b1625 1949 struct qeth_channel *channel = iob->channel;
308946b0 1950 struct qeth_reply *reply = &iob->reply;
782e4a79 1951 long timeout = iob->timeout;
4a71df50 1952 int rc;
4a71df50 1953
847a50fd 1954 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 1955
4a71df50
FB		 1956 reply->callback = reply_cb;
1957 reply->param = reply_param;
d22ffb5a 1958
782e4a79 1959 timeout = wait_event_interruptible_timeout(card->wait_q,
3518ae76 1960 qeth_trylock_channel(channel, iob),
782e4a79
JW		 1961 timeout);
1962 if (timeout <= 0) {
c3b2218d 1963 qeth_put_cmd(iob);
782e4a79
JW		 1964 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1965 }
4a71df50 1966
2066e1db 1967 if (iob->finalize)
c3b2218d
JW		 1968 iob->finalize(card, iob);
1969 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 1970
308946b0 1971 qeth_enqueue_cmd(card, iob);
1c5b2216 1972
32e85a0d
JW		 1973 /* This pairs with iob->callback, and keeps the iob alive after IO: */
1974 qeth_get_cmd(iob);
1975
847a50fd 1976 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 1977 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 1978 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 1979 (addr_t) iob, 0, 0, timeout);
ed47155b 1980 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 1981 if (rc) {
e19e5be8
JW		 1982 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1983 CARD_DEVID(card), rc);
847a50fd 1984 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 1985 qeth_dequeue_cmd(card, iob);
c3b2218d 1986 qeth_put_cmd(iob);
7359393f 1987 qeth_unlock_channel(card, channel);
32e85a0d 1988 goto out;
4a71df50 1989 }
5b54e16f 1990
308946b0 1991 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 1992 timeout);
1993 if (timeout <= 0)
1994 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 1995
308946b0 1996 qeth_dequeue_cmd(card, iob);
072f7940
JW		 1997
1998 if (reply_cb) {
1999 /* Wait until the callback for a late reply has completed: */
308946b0 2000 spin_lock_irq(&iob->lock);
072f7940
JW		 2001 if (rc)
2002 /* Zap any callback that's still pending: */
308946b0
JW		 2003 iob->rc = rc;
2004 spin_unlock_irq(&iob->lock);
072f7940
JW		 2005 }
2006
782e4a79 2007 if (!rc)
308946b0 2008 rc = iob->rc;
32e85a0d
JW		 2009
2010out:
32e85a0d 2011 qeth_put_cmd(iob);
5b54e16f 2012 return rc;
4a71df50 2013}
4a71df50 2014
afc1f67b
JW		 2015struct qeth_node_desc {
2016 struct node_descriptor nd1;
2017 struct node_descriptor nd2;
2018 struct node_descriptor nd3;
2019};
2020
2066e1db 2021static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 2022 struct qeth_cmd_buffer *iob,
2023 unsigned int data_length)
2066e1db 2024{
afc1f67b 2025 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 2026 int rc = 0;
afc1f67b 2027 u8 *tag;
2066e1db
JW		 2028
2029 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 2030
2031 if (data_length < sizeof(*nd)) {
2032 rc = -EINVAL;
2033 goto out;
2034 }
2035
afc1f67b
JW		 2036 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2037 nd->nd1.plant[1] == _ascebc['M'];
2038 tag = (u8 *)&nd->nd1.tag;
2039 card->info.chpid = tag[0];
2040 card->info.unit_addr2 = tag[1];
2041
2042 tag = (u8 *)&nd->nd2.tag;
2043 card->info.cula = tag[1];
2044
2045 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2046 nd->nd3.model[1] == 0xF0 &&
2047 nd->nd3.model[2] >= 0xF1 &&
2048 nd->nd3.model[2] <= 0xF4;
2066e1db 2049
12fc286f 2050out:
308946b0 2051 qeth_notify_cmd(iob, rc);
c3b2218d 2052 qeth_put_cmd(iob);
2066e1db
JW		 2053}
2054
2055static int qeth_read_conf_data(struct qeth_card *card)
2056{
2057 struct qeth_channel *channel = &card->data;
2058 struct qeth_cmd_buffer *iob;
2059 struct ciw *ciw;
2060
2061 /* scan for RCD command in extended SenseID data */
2062 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2063 if (!ciw || ciw->cmd == 0)
2064 return -EOPNOTSUPP;
afc1f67b
JW		 2065 if (ciw->count < sizeof(struct qeth_node_desc))
2066 return -EINVAL;
2066e1db
JW		 2067
2068 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2069 if (!iob)
2070 return -ENOMEM;
2071
2072 iob->callback = qeth_read_conf_data_cb;
2073 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2074 iob->data);
2075
c3b2218d 2076 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 2077}
2078
2e873d10
JW		 2079static int qeth_idx_check_activate_response(struct qeth_card *card,
2080 struct qeth_channel *channel,
2081 struct qeth_cmd_buffer *iob)
2082{
2083 int rc;
2084
2085 rc = qeth_check_idx_response(card, iob->data);
2086 if (rc)
2087 return rc;
2088
2089 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2090 return 0;
2091
2092 /* negative reply: */
57a688aa
JW		 2093 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2094 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 2095
2096 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2097 case QETH_IDX_ACT_ERR_EXCL:
2098 dev_err(&channel->ccwdev->dev,
2099 "The adapter is used exclusively by another host\n");
2100 return -EBUSY;
2101 case QETH_IDX_ACT_ERR_AUTH:
2102 case QETH_IDX_ACT_ERR_AUTH_USER:
2103 dev_err(&channel->ccwdev->dev,
2104 "Setting the device online failed because of insufficient authorization\n");
2105 return -EPERM;
2106 default:
2107 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2108 CCW_DEVID(channel->ccwdev));
2109 return -EIO;
2110 }
2111}
2112
f3b783b1 2113static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
12fc286f
JW		 2114 struct qeth_cmd_buffer *iob,
2115 unsigned int data_length)
2e873d10 2116{
fcda7f73 2117 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2118 u16 peer_level;
2119 int rc;
2120
57a688aa 2121 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 2122
2123 rc = qeth_idx_check_activate_response(card, channel, iob);
2124 if (rc)
2125 goto out;
2126
2127 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2128 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2129 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2130 CCW_DEVID(channel->ccwdev),
2131 card->info.func_level, peer_level);
2132 rc = -EINVAL;
2133 goto out;
2134 }
2135
2136 memcpy(&card->token.issuer_rm_r,
2137 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2138 QETH_MPC_TOKEN_LENGTH);
2139 memcpy(&card->info.mcl_level[0],
2140 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2141
2142out:
308946b0 2143 qeth_notify_cmd(iob, rc);
c3b2218d 2144 qeth_put_cmd(iob);
2e873d10
JW		 2145}
2146
f3b783b1 2147static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 2148 struct qeth_cmd_buffer *iob,
2149 unsigned int data_length)
2e873d10 2150{
fcda7f73 2151 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2152 u16 peer_level;
2153 int rc;
2154
57a688aa 2155 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 2156
2157 rc = qeth_idx_check_activate_response(card, channel, iob);
2158 if (rc)
2159 goto out;
2160
2161 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2162 if ((peer_level & ~0x0100) !=
2163 qeth_peer_func_level(card->info.func_level)) {
2164 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2165 CCW_DEVID(channel->ccwdev),
2166 card->info.func_level, peer_level);
2167 rc = -EINVAL;
2168 }
2169
2170out:
308946b0 2171 qeth_notify_cmd(iob, rc);
c3b2218d 2172 qeth_put_cmd(iob);
2e873d10
JW		 2173}
2174
2e873d10
JW		 2175static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2176 struct qeth_cmd_buffer *iob)
2177{
2178 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2179 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 2180 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10 2181
f3b783b1
JW		 2182 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2183 iob->data);
2184 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10 2185 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 2186
5fd3fcbb 2187 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 2188 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2189 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2190 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2191 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2192 &card->info.func_level, 2);
fa115adf 2193 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2e873d10
JW		 2194 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2195}
2196
2197static int qeth_idx_activate_read_channel(struct qeth_card *card)
2198{
2199 struct qeth_channel *channel = &card->read;
2200 struct qeth_cmd_buffer *iob;
2201 int rc;
2202
57a688aa 2203 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2204
f3b783b1 2205 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2206 if (!iob)
2207 return -ENOMEM;
2208
2209 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2210 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2211 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 2212
c3b2218d 2213 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2214 if (rc)
2215 return rc;
2216
2e873d10
JW		 2217 channel->state = CH_STATE_UP;
2218 return 0;
2219}
2220
2221static int qeth_idx_activate_write_channel(struct qeth_card *card)
2222{
2223 struct qeth_channel *channel = &card->write;
2224 struct qeth_cmd_buffer *iob;
2225 int rc;
2226
57a688aa 2227 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2228
f3b783b1 2229 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2230 if (!iob)
2231 return -ENOMEM;
2232
2233 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2234 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2235 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2236
c3b2218d 2237 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2238 if (rc)
2239 return rc;
2240
2e873d10
JW		 2241 channel->state = CH_STATE_UP;
2242 return 0;
2243}
2244
4a71df50
FB		 2245static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2246 unsigned long data)
2247{
2248 struct qeth_cmd_buffer *iob;
2249
57a688aa 2250 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2251
2252 iob = (struct qeth_cmd_buffer *) data;
2253 memcpy(&card->token.cm_filter_r,
2254 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2255 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2256 return 0;
2257}
2258
2259static int qeth_cm_enable(struct qeth_card *card)
2260{
4a71df50
FB		 2261 struct qeth_cmd_buffer *iob;
2262
57a688aa 2263 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2264
f19f8fd2 2265 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2266 if (!iob)
2267 return -ENOMEM;
48ce6f89 2268
4a71df50
FB		 2269 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2270 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2271 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2272 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2273
c3b2218d 2274 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2275}
2276
2277static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2278 unsigned long data)
2279{
4a71df50
FB		 2280 struct qeth_cmd_buffer *iob;
2281
57a688aa 2282 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2283
2284 iob = (struct qeth_cmd_buffer *) data;
2285 memcpy(&card->token.cm_connection_r,
2286 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2287 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2288 return 0;
2289}
2290
2291static int qeth_cm_setup(struct qeth_card *card)
2292{
4a71df50
FB		 2293 struct qeth_cmd_buffer *iob;
2294
57a688aa 2295 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2296
f19f8fd2 2297 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2298 if (!iob)
2299 return -ENOMEM;
48ce6f89 2300
4a71df50
FB		 2301 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2302 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2303 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2304 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2305 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2306 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2307 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2308}
2309
101e314d
JW		 2310static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2311{
2312 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2313 link_type == QETH_LINK_TYPE_HSTR) {
2314 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2315 return false;
2316 }
2317
2318 return true;
2319}
2320
8ce7a9e0 2321static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2322{
8ce7a9e0
JW		 2323 struct net_device *dev = card->dev;
2324 unsigned int new_mtu;
2325
2326 if (!max_mtu) {
2327 /* IQD needs accurate max MTU to set up its RX buffers: */
2328 if (IS_IQD(card))
2329 return -EINVAL;
2330 /* tolerate quirky HW: */
2331 max_mtu = ETH_MAX_MTU;
2332 }
2333
2334 rtnl_lock();
2335 if (IS_IQD(card)) {
2336 /* move any device with default MTU to new max MTU: */
2337 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2338
2339 /* adjust RX buffer size to new max MTU: */
2340 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2341 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2342 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2343 } else {
2344 if (dev->mtu)
2345 new_mtu = dev->mtu;
2346 /* default MTUs for first setup: */
4fda3354 2347 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2348 new_mtu = ETH_DATA_LEN;
2349 else
2350 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2351 }
8ce7a9e0
JW		 2352
2353 dev->max_mtu = max_mtu;
2354 dev->mtu = min(new_mtu, max_mtu);
2355 rtnl_unlock();
2356 return 0;
4a71df50
FB		 2357}
2358
cef6ff22 2359static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2360{
2361 switch (framesize) {
2362 case 0x4000:
2363 return 8192;
2364 case 0x6000:
2365 return 16384;
2366 case 0xa000:
2367 return 32768;
2368 case 0xffff:
2369 return 57344;
2370 default:
2371 return 0;
2372 }
2373}
2374
4a71df50
FB		 2375static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2376 unsigned long data)
2377{
4a71df50
FB		 2378 __u16 mtu, framesize;
2379 __u16 len;
4a71df50 2380 struct qeth_cmd_buffer *iob;
101e314d 2381 u8 link_type = 0;
4a71df50 2382
57a688aa 2383 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2384
2385 iob = (struct qeth_cmd_buffer *) data;
2386 memcpy(&card->token.ulp_filter_r,
2387 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2388 QETH_MPC_TOKEN_LENGTH);
379ac99e 2389 if (IS_IQD(card)) {
4a71df50
FB		 2390 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2391 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2392 } else {
8ce7a9e0 2393 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2394 }
8ce7a9e0 2395 *(u16 *)reply->param = mtu;
4a71df50
FB		 2396
2397 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2398 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2399 memcpy(&link_type,
2400 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
101e314d
JW		 2401 if (!qeth_is_supported_link_type(card, link_type))
2402 return -EPROTONOSUPPORT;
2403 }
2404
2405 card->info.link_type = link_type;
57a688aa 2406 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2407 return 0;
2408}
2409
73657a3e
JW		 2410static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2411{
a37cfa28 2412 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
73657a3e
JW		 2413}
2414
4a71df50
FB		 2415static int qeth_ulp_enable(struct qeth_card *card)
2416{
73657a3e 2417 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2418 struct qeth_cmd_buffer *iob;
8ce7a9e0 2419 u16 max_mtu;
73657a3e 2420 int rc;
4a71df50 2421
57a688aa 2422 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2423
f19f8fd2 2424 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2425 if (!iob)
2426 return -ENOMEM;
4a71df50 2427
92d27209 2428 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2429 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2430 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2431 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2432 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2433 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2434 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2435 if (rc)
2436 return rc;
2437 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2438}
2439
2440static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2441 unsigned long data)
2442{
2443 struct qeth_cmd_buffer *iob;
2444
57a688aa 2445 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2446
2447 iob = (struct qeth_cmd_buffer *) data;
2448 memcpy(&card->token.ulp_connection_r,
2449 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2450 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2451 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2452 3)) {
57a688aa 2453 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2454 dev_err(&card->gdev->dev, "A connection could not be "
2455 "established because of an OLM limit\n");
4b7ae122 2456 return -EMLINK;
65a1f898 2457 }
7bf9bcff 2458 return 0;
4a71df50
FB		 2459}
2460
2461static int qeth_ulp_setup(struct qeth_card *card)
2462{
4a71df50
FB		 2463 __u16 temp;
2464 struct qeth_cmd_buffer *iob;
4a71df50 2465
57a688aa 2466 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2467
f19f8fd2 2468 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2469 if (!iob)
2470 return -ENOMEM;
4a71df50
FB		 2471
2472 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2473 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2474 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2475 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2476 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2477 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2478
fa115adf 2479 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
4a71df50
FB		 2480 temp = (card->info.cula << 8) + card->info.unit_addr2;
2481 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2482 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2483}
2484
e47ded97
JW		 2485static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2486 gfp_t gfp)
0da9581d 2487{
0da9581d
EL		 2488 struct qeth_qdio_out_buffer *newbuf;
2489
e47ded97 2490 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
3b346c18
JW		 2491 if (!newbuf)
2492 return -ENOMEM;
2493
d445a4e2 2494 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2495 skb_queue_head_init(&newbuf->skb_list);
2496 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
0da9581d
EL		 2497 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2498 q->bufs[bidx] = newbuf;
3b346c18 2499 return 0;
0da9581d
EL		 2500}
2501
afa0c590 2502static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2503{
2504 if (!q)
2505 return;
2506
41c47da3 2507 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2508 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2509 kfree(q);
2510}
2511
41c47da3 2512static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2513{
2514 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
e7a36d27 2515 unsigned int i;
d445a4e2
SO		 2516
2517 if (!q)
2518 return NULL;
2519
e7a36d27
JW		 2520 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2521 goto err_qdio_bufs;
2522
2523 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
e47ded97 2524 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
e7a36d27 2525 goto err_out_bufs;
d445a4e2 2526 }
e7a36d27 2527
d445a4e2 2528 return q;
e7a36d27
JW		 2529
2530err_out_bufs:
2531 while (i > 0)
396c1004 2532 qeth_free_out_buf(q->bufs[--i]);
e7a36d27
JW		 2533 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2534err_qdio_bufs:
2535 kfree(q);
2536 return NULL;
d445a4e2 2537}
0da9581d 2538
e53edf74
JW		 2539static void qeth_tx_completion_timer(struct timer_list *timer)
2540{
2541 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2542
2543 napi_schedule(&queue->napi);
2544 QETH_TXQ_STAT_INC(queue, completion_timer);
2545}
2546
41c47da3 2547static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50 2548{
e7a36d27 2549 unsigned int i;
4a71df50 2550
57a688aa 2551 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2552
2553 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2554 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2555 return 0;
2556
4a71df50
FB		 2557 /* inbound buffer pool */
2558 if (qeth_alloc_buffer_pool(card))
832585d2 2559 goto out_buffer_pool;
0da9581d 2560
4a71df50 2561 /* outbound */
4a71df50 2562 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2563 struct qeth_qdio_out_q *queue;
2564
2565 queue = qeth_alloc_output_queue();
2566 if (!queue)
4a71df50 2567 goto out_freeoutq;
57a688aa 2568 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2569 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2570 card->qdio.out_qs[i] = queue;
2571 queue->card = card;
2572 queue->queue_no = i;
c20383ad 2573 INIT_LIST_HEAD(&queue->pending_bufs);
a1668474 2574 spin_lock_init(&queue->lock);
e53edf74 2575 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
7a4b92e8
JW		 2576 if (IS_IQD(card)) {
2577 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2578 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2579 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2580 } else {
2581 queue->coalesce_usecs = USEC_PER_SEC;
2582 queue->max_coalesced_frames = 0;
2583 queue->rescan_usecs = 10 * USEC_PER_SEC;
2584 }
949bbf4d 2585 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
4a71df50 2586 }
0da9581d
EL		 2587
2588 /* completion */
2589 if (qeth_alloc_cq(card))
2590 goto out_freeoutq;
2591
4a71df50
FB		 2592 return 0;
2593
2594out_freeoutq:
bb92d3f8 2595 while (i > 0) {
afa0c590 2596 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2597 card->qdio.out_qs[i] = NULL;
2598 }
4a71df50 2599 qeth_free_buffer_pool(card);
832585d2 2600out_buffer_pool:
4a71df50
FB		 2601 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2602 return -ENOMEM;
2603}
2604
41c47da3 2605static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2606{
2607 int i, j;
2608
2609 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2610 QETH_QDIO_UNINITIALIZED)
2611 return;
2612
2613 qeth_free_cq(card);
d445a4e2 2614 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
832585d2 2615 if (card->qdio.in_q->bufs[j].rx_skb) {
fdd3c5f0 2616 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
832585d2
JW		 2617 card->qdio.in_q->bufs[j].rx_skb = NULL;
2618 }
d445a4e2 2619 }
832585d2 2620
d445a4e2
SO		 2621 /* inbound buffer pool */
2622 qeth_free_buffer_pool(card);
2623 /* free outbound qdio_qs */
bb92d3f8
JW		 2624 for (i = 0; i < card->qdio.no_out_queues; i++) {
2625 qeth_free_output_queue(card->qdio.out_qs[i]);
2626 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2627 }
2628}
2629
72d5e850
JW		 2630static void qeth_fill_qib_parms(struct qeth_card *card,
2631 struct qeth_qib_parms *parms)
2632{
949bbf4d
JW		 2633 struct qeth_qdio_out_q *queue;
2634 unsigned int i;
2635
72d5e850
JW		 2636 parms->pcit_magic[0] = 'P';
2637 parms->pcit_magic[1] = 'C';
2638 parms->pcit_magic[2] = 'I';
2639 parms->pcit_magic[3] = 'T';
2640 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2641 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2642 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2643 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2644
2645 parms->blkt_magic[0] = 'B';
2646 parms->blkt_magic[1] = 'L';
2647 parms->blkt_magic[2] = 'K';
2648 parms->blkt_magic[3] = 'T';
2649 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2650 parms->blkt_total = card->info.blkt.time_total;
2651 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2652 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
949bbf4d
JW		 2653
2654 /* Prio-queueing implicitly uses the default priorities: */
2655 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2656 return;
2657
2658 parms->pque_magic[0] = 'P';
2659 parms->pque_magic[1] = 'Q';
2660 parms->pque_magic[2] = 'U';
2661 parms->pque_magic[3] = 'E';
2662 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2663 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2664 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2665
2666 qeth_for_each_output_queue(card, queue, i)
2667 parms->pque_priority[i] = queue->priority;
4a71df50
FB		 2668}
2669
2670static int qeth_qdio_activate(struct qeth_card *card)
2671{
57a688aa 2672 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2673 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2674}
2675
2676static int qeth_dm_act(struct qeth_card *card)
2677{
4a71df50
FB		 2678 struct qeth_cmd_buffer *iob;
2679
57a688aa 2680 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2681
f19f8fd2 2682 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2683 if (!iob)
2684 return -ENOMEM;
4a71df50
FB		 2685
2686 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2687 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2688 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2689 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2690 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2691}
2692
2693static int qeth_mpc_initialize(struct qeth_card *card)
2694{
2695 int rc;
2696
57a688aa 2697 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2698
2699 rc = qeth_issue_next_read(card);
2700 if (rc) {
57a688aa 2701 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2702 return rc;
2703 }
2704 rc = qeth_cm_enable(card);
2705 if (rc) {
57a688aa 2706 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
8b5026bc 2707 return rc;
4a71df50
FB		 2708 }
2709 rc = qeth_cm_setup(card);
2710 if (rc) {
57a688aa 2711 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
8b5026bc 2712 return rc;
4a71df50
FB		 2713 }
2714 rc = qeth_ulp_enable(card);
2715 if (rc) {
57a688aa 2716 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
8b5026bc 2717 return rc;
4a71df50
FB		 2718 }
2719 rc = qeth_ulp_setup(card);
2720 if (rc) {
57a688aa 2721 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2722 return rc;
4a71df50 2723 }
41c47da3 2724 rc = qeth_alloc_qdio_queues(card);
4a71df50 2725 if (rc) {
57a688aa 2726 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2727 return rc;
4a71df50
FB		 2728 }
2729 rc = qeth_qdio_establish(card);
2730 if (rc) {
57a688aa 2731 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2732 qeth_free_qdio_queues(card);
8b5026bc 2733 return rc;
4a71df50
FB		 2734 }
2735 rc = qeth_qdio_activate(card);
2736 if (rc) {
57a688aa 2737 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
8b5026bc 2738 return rc;
4a71df50
FB		 2739 }
2740 rc = qeth_dm_act(card);
2741 if (rc) {
57a688aa 2742 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
8b5026bc 2743 return rc;
4a71df50
FB		 2744 }
2745
2746 return 0;
4a71df50
FB		 2747}
2748
b7ea041b 2749static void qeth_print_status_message(struct qeth_card *card)
4a71df50
FB		 2750{
2751 switch (card->info.type) {
5113fec0
UB		 2752 case QETH_CARD_TYPE_OSD:
2753 case QETH_CARD_TYPE_OSM:
2754 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2755 /* VM will use a non-zero first character
2756 * to indicate a HiperSockets like reporting
2757 * of the level OSA sets the first character to zero
2758 * */
2759 if (!card->info.mcl_level[0]) {
2760 sprintf(card->info.mcl_level, "%02x%02x",
2761 card->info.mcl_level[2],
2762 card->info.mcl_level[3]);
4a71df50
FB		 2763 break;
2764 }
df561f66 2765 fallthrough;
4a71df50 2766 case QETH_CARD_TYPE_IQD:
379ac99e 2767 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2768 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2769 card->info.mcl_level[0]];
2770 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2771 card->info.mcl_level[1]];
2772 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2773 card->info.mcl_level[2]];
2774 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2775 card->info.mcl_level[3]];
2776 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2777 }
2778 break;
2779 default:
2780 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2781 }
239ff408
UB		 2782 dev_info(&card->gdev->dev,
2783 "Device is a%s card%s%s%s\nwith link type %s.\n",
2784 qeth_get_cardname(card),
2785 (card->info.mcl_level[0]) ? " (level: " : "",
2786 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2787 (card->info.mcl_level[0]) ? ")" : "",
2788 qeth_get_cardname_short(card));
4a71df50 2789}
4a71df50 2790
4a71df50
FB		 2791static void qeth_initialize_working_pool_list(struct qeth_card *card)
2792{
2793 struct qeth_buffer_pool_entry *entry;
2794
847a50fd 2795 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2796
2797 list_for_each_entry(entry,
2798 &card->qdio.init_pool.entry_list, init_list) {
2799 qeth_put_buffer_pool_entry(card, entry);
2800 }
2801}
2802
cef6ff22
JW		 2803static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2804 struct qeth_card *card)
4a71df50 2805{
4a71df50
FB		 2806 struct qeth_buffer_pool_entry *entry;
2807 int i, free;
4a71df50
FB		 2808
2809 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2810 return NULL;
2811
bb59c8a8 2812 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
4a71df50
FB		 2813 free = 1;
2814 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2815 if (page_count(entry->elements[i]) > 1) {
4a71df50
FB		 2816 free = 0;
2817 break;
2818 }
2819 }
2820 if (free) {
2821 list_del_init(&entry->list);
2822 return entry;
2823 }
2824 }
2825
2826 /* no free buffer in pool so take first one and swap pages */
bb59c8a8
JW		 2827 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2828 struct qeth_buffer_pool_entry, list);
4a71df50 2829 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2830 if (page_count(entry->elements[i]) > 1) {
714c9108 2831 struct page *page = dev_alloc_page();
f81649df
JW		 2832
2833 if (!page)
4a71df50 2834 return NULL;
f81649df
JW		 2835
2836 __free_page(entry->elements[i]);
2837 entry->elements[i] = page;
2838 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2839 }
2840 }
2841 list_del_init(&entry->list);
2842 return entry;
2843}
2844
2845static int qeth_init_input_buffer(struct qeth_card *card,
2846 struct qeth_qdio_buffer *buf)
2847{
eff73e16 2848 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
4a71df50
FB		 2849 int i;
2850
b3332930 2851 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2 2852 buf->rx_skb = netdev_alloc_skb(card->dev,
8ca8559f
JW		 2853 ETH_HLEN +
2854 sizeof(struct ipv6hdr));
b3332930 2855 if (!buf->rx_skb)
17413852 2856 return -ENOMEM;
b3332930
FB		 2857 }
2858
eff73e16
JW		 2859 if (!pool_entry) {
2860 pool_entry = qeth_find_free_buffer_pool_entry(card);
2861 if (!pool_entry)
2862 return -ENOBUFS;
2863
2864 buf->pool_entry = pool_entry;
2865 }
4a71df50
FB		 2866
2867 /*
2868 * since the buffer is accessed only from the input_tasklet
2869 * there shouldn't be a need to synchronize; also, since we use
2870 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2871 * buffers
2872 */
4a71df50
FB		 2873 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2874 buf->buffer->element[i].length = PAGE_SIZE;
2db01da8 2875 buf->buffer->element[i].addr =
f81649df 2876 page_to_phys(pool_entry->elements[i]);
4a71df50 2877 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2878 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2879 else
3ec90878
JG		 2880 buf->buffer->element[i].eflags = 0;
2881 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2882 }
2883 return 0;
2884}
2885
8b664cd1
JW		 2886static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2887 struct qeth_qdio_out_q *queue)
2888{
2889 if (!IS_IQD(card) ||
2890 qeth_iqd_is_mcast_queue(card, queue) ||
2891 card->options.cq == QETH_CQ_ENABLED ||
2892 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2893 return 1;
2894
2895 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2896}
2897
aa3ad392 2898static int qeth_init_qdio_queues(struct qeth_card *card)
4a71df50 2899{
9e7d92e0 2900 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
7b579ce5 2901 unsigned int i;
4a71df50
FB		 2902 int rc;
2903
57a688aa 2904 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2905
2906 /* inbound queue */
1b45c80b
JW		 2907 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2908 memset(&card->rx, 0, sizeof(struct qeth_rx));
17413852 2909
4a71df50
FB		 2910 qeth_initialize_working_pool_list(card);
2911 /*give only as many buffers to hardware as we have buffer pool entries*/
9e7d92e0 2912 for (i = 0; i < rx_bufs; i++) {
17413852
JW		 2913 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2914 if (rc)
2915 return rc;
2916 }
2917
9e7d92e0 2918 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
396c1004
JW		 2919 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, rx_bufs,
2920 NULL);
4a71df50 2921 if (rc) {
57a688aa 2922 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2923 return rc;
2924 }
0da9581d
EL		 2925
2926 /* completion */
2927 rc = qeth_cq_init(card);
2928 if (rc) {
2929 return rc;
2930 }
2931
4a71df50
FB		 2932 /* outbound queue */
2933 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 2934 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2935
2936 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2937 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2938 queue->next_buf_to_fill = 0;
2939 queue->do_pack = 0;
9549d70a 2940 queue->prev_hdr = NULL;
ee1e52d1 2941 queue->coalesced_frames = 0;
9549d70a 2942 queue->bulk_start = 0;
8b664cd1
JW		 2943 queue->bulk_count = 0;
2944 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
4e26c5fe
JW		 2945 atomic_set(&queue->used_buffers, 0);
2946 atomic_set(&queue->set_pci_flags_count, 0);
96bd6c94 2947 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
4a71df50
FB		 2948 }
2949 return 0;
2950}
4a71df50 2951
48ce6f89 2952static void qeth_ipa_finalize_cmd(struct qeth_card *card,
c3b2218d 2953 struct qeth_cmd_buffer *iob)
48ce6f89 2954{
c3b2218d 2955 qeth_mpc_finalize_cmd(card, iob);
48ce6f89
JW		 2956
2957 /* override with IPA-specific values: */
308946b0 2958 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
48ce6f89
JW		 2959}
2960
a8c7629c
JW		 2961static void qeth_prepare_ipa_cmd(struct qeth_card *card,
2962 struct qeth_cmd_buffer *iob, u16 cmd_length)
605c9d5f
JW		 2963{
2964 u8 prot_type = qeth_mpc_select_prot_type(card);
c3b2218d 2965 u16 total_length = iob->length;
605c9d5f 2966
f19f8fd2
JW		 2967 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2968 iob->data);
48ce6f89 2969 iob->finalize = qeth_ipa_finalize_cmd;
782e4a79 2970
605c9d5f 2971 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 2972 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 2973 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 2974 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2975 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 2976 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2977 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 2978 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f 2979}
605c9d5f 2980
7f92316c
JW		 2981static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
2982 struct qeth_cmd_buffer *reply)
2983{
2984 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
2985
2986 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
2987}
2988
a59d121d
JW		 2989struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2990 enum qeth_ipa_cmds cmd_code,
2991 enum qeth_prot_versions prot,
2992 unsigned int data_length)
2993{
2994 struct qeth_cmd_buffer *iob;
c3b2218d 2995 struct qeth_ipacmd_hdr *hdr;
a59d121d
JW		 2996
2997 data_length += offsetof(struct qeth_ipa_cmd, data);
2998 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2999 QETH_IPA_TIMEOUT);
3000 if (!iob)
3001 return NULL;
3002
a8c7629c
JW		 3003 qeth_prepare_ipa_cmd(card, iob, data_length);
3004 iob->match = qeth_ipa_match_reply;
c3b2218d
JW		 3005
3006 hdr = &__ipa_cmd(iob)->hdr;
3007 hdr->command = cmd_code;
3008 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3009 /* hdr->seqno is set by qeth_send_control_data() */
101e314d 3010 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
c3b2218d
JW		 3011 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3012 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3013 hdr->param_count = 1;
3014 hdr->prot_version = prot;
a59d121d
JW		 3015 return iob;
3016}
3017EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3018
742d4d40
JW		 3019static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3020 struct qeth_reply *reply, unsigned long data)
3021{
3022 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3023
3024 return (cmd->hdr.return_code) ? -EIO : 0;
3025}
3026
7ffaef82 3027/*
efbbc1d5
EC		 3028 * qeth_send_ipa_cmd() - send an IPA command
3029 *
3030 * See qeth_send_control_data() for explanation of the arguments.
3031 */
3032
4a71df50
FB		 3033int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3034 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3035 unsigned long),
3036 void *reply_param)
3037{
3038 int rc;
4a71df50 3039
847a50fd 3040 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 3041
2e873d10 3042 if (card->read_or_write_problem) {
c3b2218d 3043 qeth_put_cmd(iob);
2e873d10
JW		 3044 return -EIO;
3045 }
3046
742d4d40
JW		 3047 if (reply_cb == NULL)
3048 reply_cb = qeth_send_ipa_cmd_cb;
c3b2218d 3049 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
908abbb5
UB		 3050 if (rc == -ETIME) {
3051 qeth_clear_ipacmd_list(card);
3052 qeth_schedule_recovery(card);
3053 }
4a71df50
FB		 3054 return rc;
3055}
3056EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3057
4b7ae122
JW		 3058static int qeth_send_startlan_cb(struct qeth_card *card,
3059 struct qeth_reply *reply, unsigned long data)
3060{
3061 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3062
3063 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3064 return -ENETDOWN;
3065
3066 return (cmd->hdr.return_code) ? -EIO : 0;
3067}
3068
10340510 3069static int qeth_send_startlan(struct qeth_card *card)
4a71df50 3070{
70919e23 3071 struct qeth_cmd_buffer *iob;
4a71df50 3072
57a688aa 3073 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 3074
a59d121d 3075 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 3076 if (!iob)
3077 return -ENOMEM;
4b7ae122 3078 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 3079}
4a71df50 3080
686c97ee 3081static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 3082{
686c97ee 3083 if (!cmd->hdr.return_code)
4a71df50
FB		 3084 cmd->hdr.return_code =
3085 cmd->data.setadapterparms.hdr.return_code;
686c97ee 3086 return cmd->hdr.return_code;
4a71df50 3087}
4a71df50
FB		 3088
3089static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3090 struct qeth_reply *reply, unsigned long data)
3091{
686c97ee 3092 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
101e314d 3093 struct qeth_query_cmds_supp *query_cmd;
4a71df50 3094
847a50fd 3095 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 3096 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3097 return -EIO;
4a71df50 3098
101e314d
JW		 3099 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3100 if (query_cmd->lan_type & 0x7f) {
3101 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3102 return -EPROTONOSUPPORT;
3103
3104 card->info.link_type = query_cmd->lan_type;
57a688aa 3105 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 3106 }
101e314d
JW		 3107
3108 card->options.adp.supported = query_cmd->supported_cmds;
686c97ee 3109 return 0;
4a71df50
FB		 3110}
3111
eb3fb0ba 3112static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 3113 enum qeth_ipa_setadp_cmd adp_cmd,
3114 unsigned int data_length)
4a71df50 3115{
b9150461 3116 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 3117 struct qeth_cmd_buffer *iob;
4a71df50 3118
b9150461
JW		 3119 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3120 data_length +
3121 offsetof(struct qeth_ipacmd_setadpparms,
3122 data));
3123 if (!iob)
3124 return NULL;
4a71df50 3125
b9150461
JW		 3126 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3127 hdr->cmdlength = sizeof(*hdr) + data_length;
3128 hdr->command_code = adp_cmd;
3129 hdr->used_total = 1;
3130 hdr->seq_no = 1;
4a71df50
FB		 3131 return iob;
3132}
4a71df50 3133
09960b3a 3134static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 3135{
3136 int rc;
3137 struct qeth_cmd_buffer *iob;
3138
847a50fd 3139 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 3140 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 3141 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 3142 if (!iob)
3143 return -ENOMEM;
4a71df50
FB		 3144 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3145 return rc;
3146}
4a71df50 3147
1da74b1c
FB		 3148static int qeth_query_ipassists_cb(struct qeth_card *card,
3149 struct qeth_reply *reply, unsigned long data)
3150{
3151 struct qeth_ipa_cmd *cmd;
3152
57a688aa 3153 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 3154
3155 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 3156
3157 switch (cmd->hdr.return_code) {
742d4d40
JW		 3158 case IPA_RC_SUCCESS:
3159 break;
a134884a
SR		 3160 case IPA_RC_NOTSUPP:
3161 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 3162 QETH_CARD_TEXT(card, 2, "ipaunsup");
52f82bf1
JW		 3163 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3164 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
742d4d40 3165 return -EOPNOTSUPP;
a134884a 3166 default:
742d4d40
JW		 3167 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3168 CARD_DEVID(card), cmd->hdr.return_code);
3169 return -EIO;
a134884a
SR		 3170 }
3171
52f82bf1
JW		 3172 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3173 card->options.ipa4 = cmd->hdr.assists;
3174 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3175 card->options.ipa6 = cmd->hdr.assists;
3176 else
e19e5be8
JW		 3177 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3178 CARD_DEVID(card));
1da74b1c
FB		 3179 return 0;
3180}
3181
09960b3a
JW		 3182static int qeth_query_ipassists(struct qeth_card *card,
3183 enum qeth_prot_versions prot)
1da74b1c
FB		 3184{
3185 int rc;
3186 struct qeth_cmd_buffer *iob;
3187
57a688aa 3188 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 3189 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 3190 if (!iob)
3191 return -ENOMEM;
1da74b1c
FB		 3192 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3193 return rc;
3194}
1da74b1c 3195
45cbb2e4
SR		 3196static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3197 struct qeth_reply *reply, unsigned long data)
3198{
686c97ee 3199 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 3200 struct qeth_query_switch_attributes *attrs;
686c97ee 3201 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 3202
3203 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 3204 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3205 return -EIO;
45cbb2e4 3206
686c97ee
JW		 3207 sw_info = (struct qeth_switch_info *)reply->param;
3208 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3209 sw_info->capabilities = attrs->capabilities;
3210 sw_info->settings = attrs->settings;
3211 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3212 sw_info->settings);
45cbb2e4
SR		 3213 return 0;
3214}
3215
3216int qeth_query_switch_attributes(struct qeth_card *card,
3217 struct qeth_switch_info *sw_info)
3218{
3219 struct qeth_cmd_buffer *iob;
3220
3221 QETH_CARD_TEXT(card, 2, "qswiattr");
3222 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3223 return -EOPNOTSUPP;
3224 if (!netif_carrier_ok(card->dev))
3225 return -ENOMEDIUM;
b9150461 3226 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 3227 if (!iob)
3228 return -ENOMEM;
45cbb2e4
SR		 3229 return qeth_send_ipa_cmd(card, iob,
3230 qeth_query_switch_attributes_cb, sw_info);
3231}
45cbb2e4 3232
5cfbe10a
JW		 3233struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3234 enum qeth_diags_cmds sub_cmd,
3235 unsigned int data_length)
3236{
3237 struct qeth_ipacmd_diagass *cmd;
3238 struct qeth_cmd_buffer *iob;
3239
3240 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3241 DIAG_HDR_LEN + data_length);
3242 if (!iob)
3243 return NULL;
3244
3245 cmd = &__ipa_cmd(iob)->data.diagass;
3246 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3247 cmd->subcmd = sub_cmd;
3248 return iob;
3249}
3250EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3251
1da74b1c
FB		 3252static int qeth_query_setdiagass_cb(struct qeth_card *card,
3253 struct qeth_reply *reply, unsigned long data)
3254{
742d4d40
JW		 3255 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3256 u16 rc = cmd->hdr.return_code;
1da74b1c 3257
742d4d40 3258 if (rc) {
1da74b1c 3259 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 3260 return -EIO;
3261 }
3262
3263 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3264 return 0;
3265}
3266
3267static int qeth_query_setdiagass(struct qeth_card *card)
3268{
3269 struct qeth_cmd_buffer *iob;
1da74b1c 3270
57a688aa 3271 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3272 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3273 if (!iob)
3274 return -ENOMEM;
1da74b1c
FB		 3275 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3276}
3277
3278static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3279{
3280 unsigned long info = get_zeroed_page(GFP_KERNEL);
3281 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3282 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3283 struct ccw_dev_id ccwid;
caf757c6 3284 int level;
1da74b1c
FB		 3285
3286 tid->chpid = card->info.chpid;
3287 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3288 tid->ssid = ccwid.ssid;
3289 tid->devno = ccwid.devno;
3290 if (!info)
3291 return;
caf757c6
HC		 3292 level = stsi(NULL, 0, 0, 0);
3293 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3294 tid->lparnr = info222->lpar_number;
caf757c6 3295 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3296 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3297 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3298 }
3299 free_page(info);
1da74b1c
FB		 3300}
3301
3302static int qeth_hw_trap_cb(struct qeth_card *card,
3303 struct qeth_reply *reply, unsigned long data)
3304{
742d4d40
JW		 3305 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3306 u16 rc = cmd->hdr.return_code;
1da74b1c 3307
742d4d40 3308 if (rc) {
1da74b1c 3309 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3310 return -EIO;
3311 }
1da74b1c
FB		 3312 return 0;
3313}
3314
3315int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3316{
3317 struct qeth_cmd_buffer *iob;
3318 struct qeth_ipa_cmd *cmd;
3319
57a688aa 3320 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3321 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3322 if (!iob)
3323 return -ENOMEM;
ff5caa7a 3324 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3325 cmd->data.diagass.type = 1;
3326 cmd->data.diagass.action = action;
3327 switch (action) {
3328 case QETH_DIAGS_TRAP_ARM:
3329 cmd->data.diagass.options = 0x0003;
3330 cmd->data.diagass.ext = 0x00010000 +
3331 sizeof(struct qeth_trap_id);
3332 qeth_get_trap_id(card,
3333 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3334 break;
3335 case QETH_DIAGS_TRAP_DISARM:
3336 cmd->data.diagass.options = 0x0001;
3337 break;
3338 case QETH_DIAGS_TRAP_CAPTURE:
3339 break;
3340 }
3341 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3342}
1da74b1c 3343
d73ef324
JW		 3344static int qeth_check_qdio_errors(struct qeth_card *card,
3345 struct qdio_buffer *buf,
3346 unsigned int qdio_error,
3347 const char *dbftext)
4a71df50 3348{
779e6e1c 3349 if (qdio_error) {
847a50fd 3350 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3351 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3352 buf->element[15].sflags);
38593d01 3353 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3354 buf->element[14].sflags);
38593d01 3355 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3356 if ((buf->element[15].sflags) == 0x12) {
845ef904 3357 QETH_CARD_STAT_INC(card, rx_fifo_errors);
76b11f8e
UB		 3358 return 0;
3359 } else
3360 return 1;
4a71df50
FB		 3361 }
3362 return 0;
3363}
4a71df50 3364
7c94a882
JW		 3365static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3366 unsigned int count)
4a71df50
FB		 3367{
3368 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3369 struct list_head *lh;
4a71df50
FB		 3370 int i;
3371 int rc;
3372 int newcount = 0;
3373
4a71df50
FB		 3374 /* only requeue at a certain threshold to avoid SIGAs */
3375 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3376 for (i = queue->next_buf_to_init;
3377 i < queue->next_buf_to_init + count; ++i) {
3378 if (qeth_init_input_buffer(card,
ec2b559d 3379 &queue->bufs[QDIO_BUFNR(i)])) {
4a71df50
FB		 3380 break;
3381 } else {
3382 newcount++;
3383 }
3384 }
3385
3386 if (newcount < count) {
3387 /* we are in memory shortage so we switch back to
3388 traditional skb allocation and drop packages */
4a71df50
FB		 3389 atomic_set(&card->force_alloc_skb, 3);
3390 count = newcount;
3391 } else {
4a71df50
FB		 3392 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3393 }
3394
b3332930
FB		 3395 if (!count) {
3396 i = 0;
3397 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3398 i++;
3399 if (i == card->qdio.in_buf_pool.buf_count) {
3400 QETH_CARD_TEXT(card, 2, "qsarbw");
b3332930
FB		 3401 schedule_delayed_work(
3402 &card->buffer_reclaim_work,
3403 QETH_RECLAIM_WORK_TIME);
3404 }
7c94a882 3405 return 0;
b3332930
FB		 3406 }
3407
779e6e1c 3408 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
396c1004 3409 queue->next_buf_to_init, count, NULL);
4a71df50 3410 if (rc) {
847a50fd 3411 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50 3412 }
ec2b559d
JW		 3413 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3414 count);
7c94a882 3415 return count;
4a71df50 3416 }
7c94a882
JW		 3417
3418 return 0;
4a71df50 3419}
d73ef324
JW		 3420
3421static void qeth_buffer_reclaim_work(struct work_struct *work)
3422{
beaadcc6
JW		 3423 struct qeth_card *card = container_of(to_delayed_work(work),
3424 struct qeth_card,
3425 buffer_reclaim_work);
d73ef324 3426
7c94a882
JW		 3427 local_bh_disable();
3428 napi_schedule(&card->napi);
3429 /* kick-start the NAPI softirq: */
3430 local_bh_enable();
d73ef324 3431}
4a71df50 3432
d7a39937 3433static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3434 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3435{
3ec90878 3436 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3437
847a50fd 3438 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3439 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3440
3441 if (!qdio_err)
d7a39937 3442 return;
d303b6fd
JG		 3443
3444 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3445 return;
d303b6fd 3446
847a50fd
CO		 3447 QETH_CARD_TEXT(card, 1, "lnkfail");
3448 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3449 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3450}
3451
664e42ac
JW		 3452/**
3453 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3454 * @queue: queue to check for packing buffer
3455 *
3456 * Returns number of buffers that were prepared for flush.
3457 */
3458static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3459{
3460 struct qeth_qdio_out_buffer *buffer;
3461
3462 buffer = queue->bufs[queue->next_buf_to_fill];
3463 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3464 (buffer->next_element_to_fill > 0)) {
3465 /* it's a packing buffer */
3466 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3467 queue->next_buf_to_fill =
ec2b559d 3468 QDIO_BUFNR(queue->next_buf_to_fill + 1);
664e42ac
JW		 3469 return 1;
3470 }
3471 return 0;
3472}
3473
4a71df50
FB		 3474/*
3475 * Switched to packing state if the number of used buffers on a queue
3476 * reaches a certain limit.
3477 */
3478static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3479{
3480 if (!queue->do_pack) {
3481 if (atomic_read(&queue->used_buffers)
3482 >= QETH_HIGH_WATERMARK_PACK){
3483 /* switch non-PACKING -> PACKING */
847a50fd 3484 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3485 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3486 queue->do_pack = 1;
3487 }
3488 }
3489}
3490
3491/*
3492 * Switches from packing to non-packing mode. If there is a packing
3493 * buffer on the queue this buffer will be prepared to be flushed.
3494 * In that case 1 is returned to inform the caller. If no buffer
3495 * has to be flushed, zero is returned.
3496 */
3497static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3498{
4a71df50
FB		 3499 if (queue->do_pack) {
3500 if (atomic_read(&queue->used_buffers)
3501 <= QETH_LOW_WATERMARK_PACK) {
3502 /* switch PACKING -> non-PACKING */
847a50fd 3503 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3504 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3505 queue->do_pack = 0;
664e42ac 3506 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3507 }
3508 }
4a71df50
FB		 3509 return 0;
3510}
3511
779e6e1c
JG		 3512static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3513 int count)
4a71df50 3514{
6ee091ef 3515 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
e53edf74 3516 struct qeth_card *card = queue->card;
7a4b92e8 3517 unsigned int frames, usecs;
396c1004 3518 struct qaob *aob = NULL;
4a71df50
FB		 3519 int rc;
3520 int i;
4a71df50 3521
4a71df50 3522 for (i = index; i < index + count; ++i) {
ec2b559d 3523 unsigned int bidx = QDIO_BUFNR(i);
8d145da2 3524 struct sk_buff *skb;
ec2b559d 3525
0da9581d 3526 buf = queue->bufs[bidx];
3ec90878
JG		 3527 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3528 SBAL_EFLAGS_LAST_ENTRY;
ee1e52d1 3529 queue->coalesced_frames += buf->frames;
4a71df50 3530
8d145da2
JW		 3531 if (IS_IQD(card)) {
3532 skb_queue_walk(&buf->skb_list, skb)
3533 skb_tx_timestamp(skb);
8d145da2 3534 }
6ee091ef 3535 }
4a71df50 3536
396c1004
JW		 3537 if (IS_IQD(card)) {
3538 if (card->options.cq == QETH_CQ_ENABLED &&
3539 !qeth_iqd_is_mcast_queue(card, queue) &&
3540 count == 1) {
3541 if (!buf->aob)
a18c28f0
JW		 3542 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3543 GFP_ATOMIC);
396c1004 3544 if (buf->aob) {
838e4cc8
JW		 3545 struct qeth_qaob_priv1 *priv;
3546
396c1004 3547 aob = buf->aob;
838e4cc8
JW		 3548 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3549 priv->state = QETH_QAOB_ISSUED;
3550 priv->queue_no = queue->queue_no;
396c1004
JW		 3551 }
3552 }
3553 } else {
4a71df50
FB		 3554 if (!queue->do_pack) {
3555 if ((atomic_read(&queue->used_buffers) >=
3556 (QETH_HIGH_WATERMARK_PACK -
3557 QETH_WATERMARK_PACK_FUZZ)) &&
3558 !atomic_read(&queue->set_pci_flags_count)) {
3559 /* it's likely that we'll go to packing
3560 * mode soon */
3561 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3562 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3563 }
3564 } else {
3565 if (!atomic_read(&queue->set_pci_flags_count)) {
3566 /*
3567 * there's no outstanding PCI any more, so we
3568 * have to request a PCI to be sure the the PCI
3569 * will wake at some time in the future then we
3570 * can flush packed buffers that might still be
3571 * hanging around, which can happen if no
3572 * further send was requested by the stack
3573 */
3574 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3575 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3576 }
3577 }
3578 }
3579
1ab2f8c6 3580 QETH_TXQ_STAT_INC(queue, doorbell);
7a4b92e8
JW		 3581 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_OUTPUT, queue->queue_no,
3582 index, count, aob);
e53edf74 3583
d6e51503
JW		 3584 switch (rc) {
3585 case 0:
3586 case -ENOBUFS:
3587 /* ignore temporary SIGA errors without busy condition */
3588
3589 /* Fake the TX completion interrupt: */
7a4b92e8
JW		 3590 frames = READ_ONCE(queue->max_coalesced_frames);
3591 usecs = READ_ONCE(queue->coalesce_usecs);
d6e51503 3592
7a4b92e8
JW		 3593 if (frames && queue->coalesced_frames >= frames) {
3594 napi_schedule(&queue->napi);
3595 queue->coalesced_frames = 0;
3596 QETH_TXQ_STAT_INC(queue, coal_frames);
3597 } else if (qeth_use_tx_irqs(card) &&
3598 atomic_read(&queue->used_buffers) >= 32) {
3599 /* Old behaviour carried over from the qdio layer: */
3600 napi_schedule(&queue->napi);
3601 QETH_TXQ_STAT_INC(queue, coal_frames);
3602 } else if (usecs) {
3603 qeth_tx_arm_timer(queue, usecs);
ee1e52d1 3604 }
e53edf74 3605
d6e51503
JW		 3606 break;
3607 default:
847a50fd 3608 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3609 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3610 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3611 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3612 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3613
4a71df50
FB		 3614 /* this must not happen under normal circumstances. if it
3615 * happens something is really wrong -> recover */
3616 qeth_schedule_recovery(queue->card);
4a71df50 3617 }
4a71df50
FB		 3618}
3619
9549d70a
JW		 3620static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3621{
8b664cd1 3622 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3623
8b664cd1 3624 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3625 queue->prev_hdr = NULL;
8b664cd1 3626 queue->bulk_count = 0;
9549d70a
JW		 3627}
3628
4a71df50
FB		 3629static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3630{
4a71df50
FB		 3631 /*
3632 * check if weed have to switch to non-packing mode or if
3633 * we have to get a pci flag out on the queue
3634 */
3635 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3636 !atomic_read(&queue->set_pci_flags_count)) {
a1668474
JW		 3637 unsigned int index, flush_cnt;
3638 bool q_was_packing;
3639
3640 spin_lock(&queue->lock);
3641
3642 index = queue->next_buf_to_fill;
3643 q_was_packing = queue->do_pack;
3644
3645 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3646 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3647 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3648
3649 if (flush_cnt) {
3650 qeth_flush_buffers(queue, index, flush_cnt);
b0abc4f5
JW		 3651 if (q_was_packing)
3652 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3653 }
a1668474
JW		 3654
3655 spin_unlock(&queue->lock);
4a71df50
FB		 3656 }
3657}
3658
0a6e6345 3659static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
a1c3ed4c
FB		 3660{
3661 struct qeth_card *card = (struct qeth_card *)card_ptr;
3662
3d35dbe6 3663 napi_schedule_irqoff(&card->napi);
a1c3ed4c 3664}
a1c3ed4c 3665
0da9581d
EL		 3666int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3667{
3668 int rc;
3669
3670 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3671 rc = -1;
3672 goto out;
3673 } else {
3674 if (card->options.cq == cq) {
3675 rc = 0;
3676 goto out;
3677 }
3678
41c47da3 3679 qeth_free_qdio_queues(card);
0da9581d
EL		 3680 card->options.cq = cq;
3681 rc = 0;
3682 }
3683out:
3684 return rc;
3685
3686}
3687EXPORT_SYMBOL_GPL(qeth_configure_cq);
3688
838e4cc8
JW		 3689static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3690{
3691 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3692 unsigned int queue_no = priv->queue_no;
3693
3694 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3695
3696 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3697 queue_no < card->qdio.no_out_queues)
3698 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3699}
3700
3b346c18
JW		 3701static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3702 unsigned int queue, int first_element,
3703 int count)
3704{
0da9581d
EL		 3705 struct qeth_qdio_q *cq = card->qdio.c_q;
3706 int i;
3707 int rc;
3708
0da9581d
EL		 3709 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3710 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3711 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3712
3713 if (qdio_err) {
3a18d754 3714 netif_tx_stop_all_queues(card->dev);
0da9581d 3715 qeth_schedule_recovery(card);
4326b5b4 3716 return;
0da9581d
EL		 3717 }
3718
3719 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3720 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3721 int e = 0;
0da9581d 3722
903e4853
UB		 3723 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3724 buffer->element[e].addr) {
2db01da8 3725 unsigned long phys_aob_addr = buffer->element[e].addr;
0da9581d 3726
838e4cc8 3727 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
0da9581d
EL		 3728 ++e;
3729 }
3b346c18 3730 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d
EL		 3731 }
3732 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
396c1004 3733 cq->next_buf_to_init, count, NULL);
0da9581d
EL		 3734 if (rc) {
3735 dev_warn(&card->gdev->dev,
3736 "QDIO reported an error, rc=%i\n", rc);
3737 QETH_CARD_TEXT(card, 2, "qcqherr");
3738 }
ec2b559d
JW		 3739
3740 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3741}
3742
7bcd64eb
JW		 3743static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3744 unsigned int qdio_err, int queue,
3745 int first_elem, int count,
3746 unsigned long card_ptr)
a1c3ed4c
FB		 3747{
3748 struct qeth_card *card = (struct qeth_card *)card_ptr;
3749
0da9581d
EL		 3750 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3751 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3752
0a6e6345 3753 if (qdio_err)
a1c3ed4c
FB		 3754 qeth_schedule_recovery(card);
3755}
a1c3ed4c 3756
7bcd64eb
JW		 3757static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3758 unsigned int qdio_error, int __queue,
3759 int first_element, int count,
3760 unsigned long card_ptr)
4a71df50
FB		 3761{
3762 struct qeth_card *card = (struct qeth_card *) card_ptr;
4a71df50 3763
bdfd740c
JW		 3764 QETH_CARD_TEXT(card, 2, "achkcond");
3765 netif_tx_stop_all_queues(card->dev);
3766 qeth_schedule_recovery(card);
4a71df50 3767}
4a71df50 3768
7ffaef82 3769/*
290b8348
SR		 3770 * Note: Function assumes that we have 4 outbound queues.
3771 */
73dc2daf 3772int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3773{
e6c15b5f 3774 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3775 u8 tos;
3776
290b8348
SR		 3777 switch (card->qdio.do_prio_queueing) {
3778 case QETH_PRIO_Q_ING_TOS:
3779 case QETH_PRIO_Q_ING_PREC:
17f3a8b5
JW		 3780 switch (vlan_get_protocol(skb)) {
3781 case htons(ETH_P_IP):
290b8348
SR		 3782 tos = ipv4_get_dsfield(ip_hdr(skb));
3783 break;
17f3a8b5 3784 case htons(ETH_P_IPV6):
290b8348
SR		 3785 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3786 break;
3787 default:
3788 return card->qdio.default_out_queue;
4a71df50 3789 }
290b8348 3790 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3791 return ~tos >> 6 & 3;
290b8348 3792 if (tos & IPTOS_MINCOST)
e6c15b5f 3793 return 3;
290b8348
SR		 3794 if (tos & IPTOS_RELIABILITY)
3795 return 2;
3796 if (tos & IPTOS_THROUGHPUT)
3797 return 1;
3798 if (tos & IPTOS_LOWDELAY)
3799 return 0;
d66cb37e
SR		 3800 break;
3801 case QETH_PRIO_Q_ING_SKB:
3802 if (skb->priority > 5)
3803 return 0;
e6c15b5f 3804 return ~skb->priority >> 1 & 3;
d66cb37e 3805 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3806 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3807 return ~ntohs(veth->h_vlan_TCI) >>
3808 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3809 break;
c91a1fb7
JW		 3810 case QETH_PRIO_Q_ING_FIXED:
3811 return card->qdio.default_out_queue;
4a71df50 3812 default:
290b8348 3813 break;
4a71df50 3814 }
290b8348 3815 return card->qdio.default_out_queue;
4a71df50
FB		 3816}
3817EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3818
2863c613
EC		 3819/**
3820 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3821 * @skb: SKB address
3822 *
3823 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3824 * fragmented part of the SKB. Returns zero for linear SKB.
3825 */
356156b6 3826static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3827{
2863c613 3828 int cnt, elements = 0;
271648b4
FB		 3829
3830 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3831 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3832
3833 elements += qeth_get_elements_for_range(
3834 (addr_t)skb_frag_address(frag),
3835 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3836 }
3837 return elements;
3838}
271648b4 3839
40e6a225
JW		 3840/**
3841 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3842 * to transmit an skb.
3843 * @skb: the skb to operate on.
3844 * @data_offset: skip this part of the skb's linear data
3845 *
3846 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3847 * skb's data (both its linear part and paged fragments).
3848 */
a8c7629c
JW		 3849static unsigned int qeth_count_elements(struct sk_buff *skb,
3850 unsigned int data_offset)
ba86ceee
JW		 3851{
3852 unsigned int elements = qeth_get_elements_for_frags(skb);
3853 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3854 addr_t start = (addr_t)skb->data + data_offset;
3855
3856 if (start != end)
3857 elements += qeth_get_elements_for_range(start, end);
3858 return elements;
3859}
4a71df50 3860
e517b649
JW		 3861#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3862 MAX_TCP_HEADER)
55494264 3863
0d6f02d3 3864/**
ba86ceee 3865 * qeth_add_hw_header() - add a HW header to an skb.
56c5af25 3866 * @queue: TX queue that the skb will be placed on.
ba86ceee 3867 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3868 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3869 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3870 * @hdr_len: length of the HW header.
3871 * @proto_len: length of protocol headers that need to be in same page as the
3872 * HW header.
56c5af25 3873 * @elements: returns the required number of buffer elements for this skb.
0d6f02d3
JW		 3874 *
3875 * Returns the pushed length. If the header can't be pushed on
3876 * (eg. because it would cross a page boundary), it is allocated from
3877 * the cache instead and 0 is returned.
ba86ceee 3878 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3879 * Error to create the hdr is indicated by returning with < 0.
3880 */
b0abc4f5
JW		 3881static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3882 struct sk_buff *skb, struct qeth_hdr **hdr,
3883 unsigned int hdr_len, unsigned int proto_len,
3884 unsigned int *elements)
ba86ceee 3885{
b413ff8a 3886 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
a7c2f4a3 3887 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3888 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3889 unsigned int __elements;
3890 addr_t start, end;
3891 bool push_ok;
3892 int rc;
3893
3894check_layout:
a7c2f4a3 3895 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3896 end = (addr_t)skb->data;
3897
a7c2f4a3 3898 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3899 /* Push HW header into same page as first protocol header. */
3900 push_ok = true;
e517b649
JW		 3901 /* ... but TSO always needs a separate element for headers: */
3902 if (skb_is_gso(skb))
3903 __elements = 1 + qeth_count_elements(skb, proto_len);
3904 else
3905 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3906 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3907 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3908 push_ok = true;
ba86ceee 3909 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3910 } else {
3911 /* Use header cache, copy protocol headers up. */
3912 push_ok = false;
3913 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3914 }
3915
3916 /* Compress skb to fit into one IO buffer: */
3917 if (__elements > max_elements) {
3918 if (!skb_is_nonlinear(skb)) {
3919 /* Drop it, no easy way of shrinking it further. */
3920 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3921 max_elements, __elements, skb->len);
3922 return -E2BIG;
3923 }
3924
3925 rc = skb_linearize(skb);
b0abc4f5
JW		 3926 if (rc) {
3927 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3928 return rc;
b0abc4f5 3929 }
ba86ceee 3930
b0abc4f5 3931 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 3932 /* Linearization changed the layout, re-evaluate: */
3933 goto check_layout;
3934 }
3935
3936 *elements = __elements;
3937 /* Add the header: */
3938 if (push_ok) {
a7c2f4a3
JW		 3939 *hdr = skb_push(skb, hdr_len);
3940 return hdr_len;
0d6f02d3 3941 }
b413ff8a
JW		 3942
3943 /* Fall back to cache element with known-good alignment: */
55494264
JW		 3944 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3945 return -E2BIG;
b413ff8a 3946 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
0d6f02d3
JW		 3947 if (!*hdr)
3948 return -ENOMEM;
a7c2f4a3
JW		 3949 /* Copy protocol headers behind HW header: */
3950 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 3951 return 0;
3952}
0d6f02d3 3953
9549d70a 3954static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 3955 struct sk_buff *curr_skb,
3956 struct qeth_hdr *curr_hdr)
3957{
8b664cd1 3958 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 3959 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3960
3961 if (!prev_hdr)
3962 return true;
3963
3964 /* All packets must have the same target: */
3965 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3966 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3967
3968 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3969 eth_hdr(curr_skb)->h_dest) &&
3970 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3971 }
3972
3973 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3974 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3975}
3976
fff1aceb
JW		 3977/**
3978 * qeth_fill_buffer() - map skb into an output buffer
3979 * @buf: buffer to transport the skb
3980 * @skb: skb to map into the buffer
3981 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3982 * from qeth_core_header_cache.
3983 * @offset: when mapping the skb, start at skb->data + offset
3984 * @hd_len: if > 0, build a dedicated header element of this size
3985 */
3986static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3987 struct sk_buff *skb, struct qeth_hdr *hdr,
3988 unsigned int offset, unsigned int hd_len)
4a71df50 3989{
384d2ef1
JW		 3990 struct qdio_buffer *buffer = buf->buffer;
3991 int element = buf->next_element_to_fill;
cc309f83
JW		 3992 int length = skb_headlen(skb) - offset;
3993 char *data = skb->data + offset;
4e2fe4ed 3994 unsigned int elem_length, cnt;
fff1aceb
JW		 3995 bool is_first_elem = true;
3996
3997 __skb_queue_tail(&buf->skb_list, skb);
3998
3999 /* build dedicated element for HW Header */
4000 if (hd_len) {
4001 is_first_elem = false;
4002
4003 buffer->element[element].addr = virt_to_phys(hdr);
4004 buffer->element[element].length = hd_len;
4005 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
a875fd16
JW		 4006
4007 /* HW header is allocated from cache: */
4008 if ((void *)hdr != skb->data)
bb7032dd 4009 __set_bit(element, buf->from_kmem_cache);
a875fd16
JW		 4010 /* HW header was pushed and is contiguous with linear part: */
4011 else if (length > 0 && !PAGE_ALIGNED(data) &&
4012 (data == (char *)hdr + hd_len))
4013 buffer->element[element].eflags |=
4014 SBAL_EFLAGS_CONTIGUOUS;
4015
fff1aceb
JW		 4016 element++;
4017 }
4a71df50 4018
cc309f83 4019 /* map linear part into buffer element(s) */
4a71df50 4020 while (length > 0) {
4e2fe4ed
JW		 4021 elem_length = min_t(unsigned int, length,
4022 PAGE_SIZE - offset_in_page(data));
4a71df50 4023
2db01da8 4024 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed
JW		 4025 buffer->element[element].length = elem_length;
4026 length -= elem_length;
384d2ef1
JW		 4027 if (is_first_elem) {
4028 is_first_elem = false;
5258830b
JW		 4029 if (length || skb_is_nonlinear(skb))
4030 /* skb needs additional elements */
3ec90878 4031 buffer->element[element].eflags =
5258830b 4032 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 4033 else
5258830b
JW		 4034 buffer->element[element].eflags = 0;
4035 } else {
4036 buffer->element[element].eflags =
4037 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 4038 }
4e2fe4ed
JW		 4039
4040 data += elem_length;
4a71df50 4041 element++;
4a71df50 4042 }
51aa165c 4043
cc309f83 4044 /* map page frags into buffer element(s) */
51aa165c 4045 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 4046 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4047
4048 data = skb_frag_address(frag);
4049 length = skb_frag_size(frag);
271648b4 4050 while (length > 0) {
4e2fe4ed
JW		 4051 elem_length = min_t(unsigned int, length,
4052 PAGE_SIZE - offset_in_page(data));
271648b4 4053
2db01da8 4054 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed 4055 buffer->element[element].length = elem_length;
271648b4
FB		 4056 buffer->element[element].eflags =
4057 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 4058
4059 length -= elem_length;
4060 data += elem_length;
271648b4
FB		 4061 element++;
4062 }
51aa165c
FB		 4063 }
4064
3ec90878
JG		 4065 if (buffer->element[element - 1].eflags)
4066 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 4067 buf->next_element_to_fill = element;
9549d70a 4068 return element;
4a71df50
FB		 4069}
4070
9549d70a
JW		 4071static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4072 struct sk_buff *skb, unsigned int elements,
4073 struct qeth_hdr *hdr, unsigned int offset,
4074 unsigned int hd_len)
4a71df50 4075{
96bd6c94 4076 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 4077 struct qeth_qdio_out_buffer *buffer;
9549d70a 4078 unsigned int next_element;
54a50941
JW		 4079 struct netdev_queue *txq;
4080 bool stopped = false;
9549d70a
JW		 4081 bool flush;
4082
8b664cd1 4083 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 4084 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 4085
54a50941
JW		 4086 /* Just a sanity check, the wake/stop logic should ensure that we always
4087 * get a free buffer.
4a71df50
FB		 4088 */
4089 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 4090 return -EBUSY;
54a50941 4091
8b664cd1
JW		 4092 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4093
4094 if (flush ||
4095 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4096 if (buffer->next_element_to_fill > 0) {
4097 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4098 queue->bulk_count++;
4099 }
4100
4101 if (queue->bulk_count >= queue->bulk_max)
4102 flush = true;
4103
4104 if (flush)
4105 qeth_flush_queue(queue);
4106
4107 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4108 queue->bulk_count)];
54a50941 4109
9549d70a
JW		 4110 /* Sanity-check again: */
4111 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4112 return -EBUSY;
4113 }
4114
4115 if (buffer->next_element_to_fill == 0 &&
4116 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 4117 /* If a TX completion happens right _here_ and misses to wake
4118 * the txq, then our re-check below will catch the race.
4119 */
4120 QETH_TXQ_STAT_INC(queue, stopped);
4121 netif_tx_stop_queue(txq);
4122 stopped = true;
4123 }
4124
9549d70a 4125 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 4126 buffer->bytes += bytes;
1ab2f8c6 4127 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a 4128 queue->prev_hdr = hdr;
96bd6c94 4129
9549d70a
JW		 4130 flush = __netdev_tx_sent_queue(txq, bytes,
4131 !stopped && netdev_xmit_more());
4132
4133 if (flush || next_element >= queue->max_elements) {
4134 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 4135 queue->bulk_count++;
4136
4137 if (queue->bulk_count >= queue->bulk_max)
4138 flush = true;
4139
4140 if (flush)
4141 qeth_flush_queue(queue);
9549d70a 4142 }
54a50941
JW		 4143
4144 if (stopped && !qeth_out_queue_is_full(queue))
4145 netif_tx_start_queue(txq);
4a71df50 4146 return 0;
4a71df50 4147}
4a71df50 4148
a8c7629c
JW		 4149static int qeth_do_send_packet(struct qeth_card *card,
4150 struct qeth_qdio_out_q *queue,
4151 struct sk_buff *skb, struct qeth_hdr *hdr,
4152 unsigned int offset, unsigned int hd_len,
4153 unsigned int elements_needed)
4a71df50 4154{
a1668474 4155 unsigned int start_index = queue->next_buf_to_fill;
4a71df50 4156 struct qeth_qdio_out_buffer *buffer;
9549d70a 4157 unsigned int next_element;
54a50941
JW		 4158 struct netdev_queue *txq;
4159 bool stopped = false;
4a71df50
FB		 4160 int flush_count = 0;
4161 int do_pack = 0;
4a71df50
FB		 4162 int rc = 0;
4163
0da9581d 4164 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4165
4166 /* Just a sanity check, the wake/stop logic should ensure that we always
4167 * get a free buffer.
4a71df50 4168 */
a1668474 4169 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4a71df50 4170 return -EBUSY;
54a50941
JW		 4171
4172 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4173
4a71df50
FB		 4174 /* check if we need to switch packing state of this queue */
4175 qeth_switch_to_packing_if_needed(queue);
4176 if (queue->do_pack) {
4177 do_pack = 1;
64ef8957 4178 /* does packet fit in current buffer? */
4e26c5fe
JW		 4179 if (buffer->next_element_to_fill + elements_needed >
4180 queue->max_elements) {
64ef8957
FB		 4181 /* ... no -> set state PRIMED */
4182 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4183 flush_count++;
4184 queue->next_buf_to_fill =
ec2b559d 4185 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 4186 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4187
4188 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 4189 if (atomic_read(&buffer->state) !=
4190 QETH_QDIO_BUF_EMPTY) {
4191 qeth_flush_buffers(queue, start_index,
779e6e1c 4192 flush_count);
3cdc8a25
JW		 4193 rc = -EBUSY;
4194 goto out;
4a71df50
FB		 4195 }
4196 }
4197 }
f72b4644 4198
54a50941
JW		 4199 if (buffer->next_element_to_fill == 0 &&
4200 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4201 /* If a TX completion happens right _here_ and misses to wake
4202 * the txq, then our re-check below will catch the race.
4203 */
4204 QETH_TXQ_STAT_INC(queue, stopped);
4205 netif_tx_stop_queue(txq);
4206 stopped = true;
4207 }
4208
9549d70a 4209 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
1ab2f8c6
JW		 4210 buffer->bytes += qdisc_pkt_len(skb);
4211 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a
JW		 4212
4213 if (queue->do_pack)
4214 QETH_TXQ_STAT_INC(queue, skbs_pack);
4215 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4216 flush_count++;
4217 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 4218 queue->next_buf_to_fill =
4219 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 4220 }
4221
4a71df50 4222 if (flush_count)
779e6e1c 4223 qeth_flush_buffers(queue, start_index, flush_count);
a1668474 4224
3cdc8a25 4225out:
b0abc4f5
JW		 4226 if (do_pack)
4227 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4228
54a50941
JW		 4229 if (stopped && !qeth_out_queue_is_full(queue))
4230 netif_tx_start_queue(txq);
4a71df50
FB		 4231 return rc;
4232}
4a71df50 4233
81ec5439
JW		 4234static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4235 unsigned int payload_len, struct sk_buff *skb,
4236 unsigned int proto_len)
82bf5c08
JW		 4237{
4238 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4239
4240 ext->hdr_tot_len = sizeof(*ext);
4241 ext->imb_hdr_no = 1;
4242 ext->hdr_type = 1;
4243 ext->hdr_version = 1;
4244 ext->hdr_len = 28;
4245 ext->payload_len = payload_len;
4246 ext->mss = skb_shinfo(skb)->gso_size;
4247 ext->dg_hdr_len = proto_len;
4248}
82bf5c08 4249
fc69660b 4250int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
17f3a8b5 4251 struct qeth_qdio_out_q *queue, __be16 proto,
b0abc4f5
JW		 4252 void (*fill_header)(struct qeth_qdio_out_q *queue,
4253 struct qeth_hdr *hdr, struct sk_buff *skb,
17f3a8b5 4254 __be16 proto, unsigned int data_len))
fc69660b 4255{
82bf5c08 4256 unsigned int proto_len, hw_hdr_len;
fc69660b 4257 unsigned int frame_len = skb->len;
82bf5c08 4258 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4259 unsigned int data_offset = 0;
4260 struct qeth_hdr *hdr = NULL;
4261 unsigned int hd_len = 0;
4262 unsigned int elements;
4263 int push_len, rc;
fc69660b 4264
82bf5c08
JW		 4265 if (is_tso) {
4266 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4267 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4268 } else {
4269 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4270 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4271 }
4272
fc69660b
JW		 4273 rc = skb_cow_head(skb, hw_hdr_len);
4274 if (rc)
4275 return rc;
4276
b0abc4f5 4277 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4278 &elements);
4279 if (push_len < 0)
4280 return push_len;
82bf5c08 4281 if (is_tso || !push_len) {
fc69660b
JW		 4282 /* HW header needs its own buffer element. */
4283 hd_len = hw_hdr_len + proto_len;
82bf5c08 4284 data_offset = push_len + proto_len;
fc69660b 4285 }
e517b649 4286 memset(hdr, 0, hw_hdr_len);
17f3a8b5 4287 fill_header(queue, hdr, skb, proto, frame_len);
82bf5c08
JW		 4288 if (is_tso)
4289 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4290 frame_len - proto_len, skb, proto_len);
fc69660b 4291
fc69660b 4292 if (IS_IQD(card)) {
9549d70a
JW		 4293 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4294 hd_len);
fc69660b
JW		 4295 } else {
4296 /* TODO: drop skb_orphan() once TX completion is fast enough */
4297 skb_orphan(skb);
a1668474 4298 spin_lock(&queue->lock);
fc69660b
JW		 4299 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4300 hd_len, elements);
a1668474 4301 spin_unlock(&queue->lock);
fc69660b
JW		 4302 }
4303
eeac0e20
JW		 4304 if (rc && !push_len)
4305 kmem_cache_free(qeth_core_header_cache, hdr);
4306
fc69660b
JW		 4307 return rc;
4308}
4309EXPORT_SYMBOL_GPL(qeth_xmit);
4310
4a71df50
FB		 4311static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4312 struct qeth_reply *reply, unsigned long data)
4313{
686c97ee 4314 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4315 struct qeth_ipacmd_setadpparms *setparms;
4316
847a50fd 4317 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4318
4a71df50 4319 setparms = &(cmd->data.setadapterparms);
686c97ee 4320 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4321 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4322 setparms->data.mode = SET_PROMISC_MODE_OFF;
4323 }
4324 card->info.promisc_mode = setparms->data.mode;
742d4d40 4325 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4326}
4327
59b757a9 4328void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4329{
59b757a9
JW		 4330 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4331 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4332 struct qeth_cmd_buffer *iob;
4333 struct qeth_ipa_cmd *cmd;
4334
847a50fd 4335 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4336 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4337
4338 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4339 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4340 if (!iob)
4341 return;
ff5caa7a 4342 cmd = __ipa_cmd(iob);
4a71df50
FB		 4343 cmd->data.setadapterparms.data.mode = mode;
4344 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4345}
4346EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4347
4a71df50
FB		 4348static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4349 struct qeth_reply *reply, unsigned long data)
4350{
686c97ee 4351 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4352 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4353
847a50fd 4354 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4355 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4356 return -EIO;
4a71df50 4357
b144b99f 4358 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4359 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4360 return -EADDRNOTAVAIL;
4361
b144b99f
JW		 4362 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4363 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4364 return -EADDRNOTAVAIL;
b144b99f 4365
978bb0ae 4366 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4367 return 0;
4368}
4369
4370int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4371{
4372 int rc;
4373 struct qeth_cmd_buffer *iob;
4374 struct qeth_ipa_cmd *cmd;
4375
847a50fd 4376 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4377
4378 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4379 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4380 if (!iob)
4381 return -ENOMEM;
ff5caa7a 4382 cmd = __ipa_cmd(iob);
4a71df50 4383 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4384 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4385 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4386 card->dev->dev_addr);
4a71df50
FB		 4387 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4388 NULL);
4389 return rc;
4390}
4391EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4392
d64ecc22
EL		 4393static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4394 struct qeth_reply *reply, unsigned long data)
4395{
686c97ee 4396 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4397 struct qeth_set_access_ctrl *access_ctrl_req;
d64ecc22 4398
847a50fd 4399 QETH_CARD_TEXT(card, 4, "setaccb");
d64ecc22 4400
d64ecc22 4401 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4402 QETH_CARD_TEXT_(card, 2, "rc=%d",
4403 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4404 if (cmd->data.setadapterparms.hdr.return_code !=
4405 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4406 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4407 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4408 cmd->data.setadapterparms.hdr.return_code);
e2dfcfba 4409 switch (qeth_setadpparms_inspect_rc(cmd)) {
d64ecc22 4410 case SET_ACCESS_CTRL_RC_SUCCESS:
65878fd9 4411 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
d64ecc22
EL		 4412 dev_info(&card->gdev->dev,
4413 "QDIO data connection isolation is deactivated\n");
65878fd9 4414 else
d64ecc22
EL		 4415 dev_info(&card->gdev->dev,
4416 "QDIO data connection isolation is activated\n");
65878fd9 4417 return 0;
0f54761d 4418 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4419 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4420 CARD_DEVID(card));
65878fd9 4421 return 0;
0f54761d 4422 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4423 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4424 CARD_DEVID(card));
65878fd9 4425 return 0;
d64ecc22 4426 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4427 dev_err(&card->gdev->dev, "Adapter does not "
4428 "support QDIO data connection isolation\n");
65878fd9 4429 return -EOPNOTSUPP;
d64ecc22 4430 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4431 dev_err(&card->gdev->dev,
4432 "Adapter is dedicated. "
4433 "QDIO data connection isolation not supported\n");
65878fd9 4434 return -EOPNOTSUPP;
d64ecc22 4435 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4436 dev_err(&card->gdev->dev,
4437 "TSO does not permit QDIO data connection isolation\n");
65878fd9 4438 return -EPERM;
0f54761d
SR		 4439 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4440 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4441 "support reflective relay mode\n");
65878fd9 4442 return -EOPNOTSUPP;
0f54761d
SR		 4443 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4444 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4445 "enabled at the adjacent switch port");
65878fd9 4446 return -EREMOTEIO;
0f54761d
SR		 4447 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4448 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4449 "at the adjacent switch failed\n");
65878fd9
JW		 4450 /* benign error while disabling ISOLATION_MODE_FWD */
4451 return 0;
d64ecc22 4452 default:
65878fd9 4453 return -EIO;
d64ecc22 4454 }
d64ecc22
EL		 4455}
4456
65878fd9
JW		 4457int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4458 enum qeth_ipa_isolation_modes mode)
d64ecc22
EL		 4459{
4460 int rc;
4461 struct qeth_cmd_buffer *iob;
4462 struct qeth_ipa_cmd *cmd;
4463 struct qeth_set_access_ctrl *access_ctrl_req;
4464
847a50fd 4465 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4466
65878fd9
JW		 4467 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4468 dev_err(&card->gdev->dev,
4469 "Adapter does not support QDIO data connection isolation\n");
4470 return -EOPNOTSUPP;
4471 }
4472
d64ecc22 4473 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4474 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4475 if (!iob)
4476 return -ENOMEM;
ff5caa7a 4477 cmd = __ipa_cmd(iob);
d64ecc22 4478 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
65878fd9 4479 access_ctrl_req->subcmd_code = mode;
d64ecc22
EL		 4480
4481 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
65878fd9 4482 NULL);
62f0379c 4483 if (rc) {
65878fd9 4484 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
62f0379c
JW		 4485 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4486 rc, CARD_DEVID(card));
d64ecc22 4487 }
65878fd9 4488
d64ecc22
EL		 4489 return rc;
4490}
d64ecc22 4491
0290bd29 4492void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4a71df50
FB		 4493{
4494 struct qeth_card *card;
4495
509e2562 4496 card = dev->ml_priv;
847a50fd 4497 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4498 qeth_schedule_recovery(card);
4499}
4500EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4501
942d6984 4502static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4503{
509e2562 4504 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4505 int rc = 0;
4506
4507 switch (regnum) {
4508 case MII_BMCR: /* Basic mode control register */
4509 rc = BMCR_FULLDPLX;
4510 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
54e049c2
JW		 4511 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4512 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4513 rc |= BMCR_SPEED100;
4514 break;
4515 case MII_BMSR: /* Basic mode status register */
4516 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4517 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4518 BMSR_100BASE4;
4519 break;
4520 case MII_PHYSID1: /* PHYS ID 1 */
4521 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4522 dev->dev_addr[2];
4523 rc = (rc >> 5) & 0xFFFF;
4524 break;
4525 case MII_PHYSID2: /* PHYS ID 2 */
4526 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4527 break;
4528 case MII_ADVERTISE: /* Advertisement control reg */
4529 rc = ADVERTISE_ALL;
4530 break;
4531 case MII_LPA: /* Link partner ability reg */
4532 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4533 LPA_100BASE4 | LPA_LPACK;
4534 break;
4535 case MII_EXPANSION: /* Expansion register */
4536 break;
4537 case MII_DCOUNTER: /* disconnect counter */
4538 break;
4539 case MII_FCSCOUNTER: /* false carrier counter */
4540 break;
4541 case MII_NWAYTEST: /* N-way auto-neg test register */
4542 break;
4543 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4544 rc = card->stats.rx_length_errors +
4545 card->stats.rx_frame_errors +
4546 card->stats.rx_fifo_errors;
4a71df50
FB		 4547 break;
4548 case MII_SREVISION: /* silicon revision */
4549 break;
4550 case MII_RESV1: /* reserved 1 */
4551 break;
4552 case MII_LBRERROR: /* loopback, rx, bypass error */
4553 break;
4554 case MII_PHYADDR: /* physical address */
4555 break;
4556 case MII_RESV2: /* reserved 2 */
4557 break;
4558 case MII_TPISTATUS: /* TPI status for 10mbps */
4559 break;
4560 case MII_NCONFIG: /* network interface config */
4561 break;
4562 default:
4563 break;
4564 }
4565 return rc;
4566}
4a71df50 4567
4a71df50 4568static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4569 struct qeth_reply *reply, unsigned long data)
4a71df50 4570{
7c5f8ffb
JW		 4571 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4572 struct qeth_arp_query_info *qinfo = reply->param;
4573 struct qeth_ipacmd_setadpparms *adp_cmd;
4574 unsigned int data_len;
9a764c1e 4575 void *snmp_data;
4a71df50 4576
847a50fd 4577 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4578
4a71df50 4579 if (cmd->hdr.return_code) {
8a593148 4580 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4581 return -EIO;
4a71df50
FB		 4582 }
4583 if (cmd->data.setadapterparms.hdr.return_code) {
4584 cmd->hdr.return_code =
4585 cmd->data.setadapterparms.hdr.return_code;
8a593148 4586 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4587 return -EIO;
4a71df50 4588 }
7c5f8ffb
JW		 4589
4590 adp_cmd = &cmd->data.setadapterparms;
4591 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4592 if (adp_cmd->hdr.seq_no == 1) {
4593 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4594 } else {
7c5f8ffb
JW		 4595 snmp_data = &adp_cmd->data.snmp.request;
4596 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4597 }
4a71df50
FB		 4598
4599 /* check if there is enough room in userspace */
4600 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4601 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4602 return -ENOSPC;
4a71df50 4603 }
847a50fd 4604 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4605 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4606 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4607 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4608 /*copy entries to user buffer*/
9a764c1e 4609 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4610 qinfo->udata_offset += data_len;
9a764c1e 4611
4a71df50
FB		 4612 if (cmd->data.setadapterparms.hdr.seq_no <
4613 cmd->data.setadapterparms.hdr.used_total)
4614 return 1;
4615 return 0;
4616}
4617
942d6984 4618static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4619{
d4c08afa 4620 struct qeth_snmp_ureq __user *ureq;
4a71df50 4621 struct qeth_cmd_buffer *iob;
6fb392b1 4622 unsigned int req_len;
4a71df50
FB		 4623 struct qeth_arp_query_info qinfo = {0, };
4624 int rc = 0;
4625
847a50fd 4626 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4627
379ac99e 4628 if (IS_VM_NIC(card))
4a71df50
FB		 4629 return -EOPNOTSUPP;
4630
4631 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4632 IS_LAYER3(card))
4a71df50 4633 return -EOPNOTSUPP;
4fda3354 4634
d4c08afa
JW		 4635 ureq = (struct qeth_snmp_ureq __user *) udata;
4636 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4637 get_user(req_len, &ureq->hdr.req_len))
4638 return -EFAULT;
4639
292a50e3
JW		 4640 /* Sanitize user input, to avoid overflows in iob size calculation: */
4641 if (req_len > QETH_BUFSIZE)
4642 return -EINVAL;
4643
d4c08afa
JW		 4644 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4645 if (!iob)
4646 return -ENOMEM;
4647
4648 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4649 &ureq->cmd, req_len)) {
4650 qeth_put_cmd(iob);
4a71df50 4651 return -EFAULT;
d4c08afa
JW		 4652 }
4653
4a71df50
FB		 4654 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4655 if (!qinfo.udata) {
d4c08afa 4656 qeth_put_cmd(iob);
4a71df50
FB		 4657 return -ENOMEM;
4658 }
4659 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4660
c2153277 4661 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4662 if (rc)
e19e5be8
JW		 4663 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4664 CARD_DEVID(card), rc);
4a71df50
FB		 4665 else {
4666 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4667 rc = -EFAULT;
4668 }
d4c08afa 4669
4a71df50
FB		 4670 kfree(qinfo.udata);
4671 return rc;
4672}
4a71df50 4673
c3ab96f3 4674static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4b2eee35
JW		 4675 struct qeth_reply *reply,
4676 unsigned long data)
c3ab96f3 4677{
686c97ee 4678 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4b2eee35 4679 struct qeth_qoat_priv *priv = reply->param;
c3ab96f3
FB		 4680 int resdatalen;
4681
4682 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4683 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4684 return -EIO;
c3ab96f3 4685
c3ab96f3 4686 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
c3ab96f3 4687
4b7ae122
JW		 4688 if (resdatalen > (priv->buffer_len - priv->response_len))
4689 return -ENOSPC;
c3ab96f3 4690
f7ec2d2a
JW		 4691 memcpy(priv->buffer + priv->response_len,
4692 &cmd->data.setadapterparms.hdr, resdatalen);
c3ab96f3
FB		 4693 priv->response_len += resdatalen;
4694
4695 if (cmd->data.setadapterparms.hdr.seq_no <
4696 cmd->data.setadapterparms.hdr.used_total)
4697 return 1;
4698 return 0;
4699}
4700
942d6984 4701static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4702{
4703 int rc = 0;
4704 struct qeth_cmd_buffer *iob;
4705 struct qeth_ipa_cmd *cmd;
4706 struct qeth_query_oat *oat_req;
4707 struct qeth_query_oat_data oat_data;
4708 struct qeth_qoat_priv priv;
4709 void __user *tmp;
4710
4711 QETH_CARD_TEXT(card, 3, "qoatcmd");
4712
4b2eee35
JW		 4713 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4714 return -EOPNOTSUPP;
c3ab96f3 4715
4b2eee35
JW		 4716 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4717 return -EFAULT;
c3ab96f3
FB		 4718
4719 priv.buffer_len = oat_data.buffer_len;
4720 priv.response_len = 0;
aec45e85 4721 priv.buffer = vzalloc(oat_data.buffer_len);
4b2eee35
JW		 4722 if (!priv.buffer)
4723 return -ENOMEM;
c3ab96f3
FB		 4724
4725 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4726 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4727 if (!iob) {
4728 rc = -ENOMEM;
4729 goto out_free;
4730 }
ff5caa7a 4731 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4732 oat_req = &cmd->data.setadapterparms.data.query_oat;
4733 oat_req->subcmd_code = oat_data.command;
4734
4b2eee35 4735 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
c3ab96f3 4736 if (!rc) {
2ccd31f8
JW		 4737 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4738 u64_to_user_ptr(oat_data.ptr);
c3ab96f3
FB		 4739 oat_data.response_len = priv.response_len;
4740
4b2eee35
JW		 4741 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4742 copy_to_user(udata, &oat_data, sizeof(oat_data)))
c3ab96f3 4743 rc = -EFAULT;
4b7ae122 4744 }
c3ab96f3
FB		 4745
4746out_free:
aec45e85 4747 vfree(priv.buffer);
c3ab96f3
FB		 4748 return rc;
4749}
c3ab96f3 4750
e71e4072
HC		 4751static int qeth_query_card_info_cb(struct qeth_card *card,
4752 struct qeth_reply *reply, unsigned long data)
02d5cb5b 4753{
686c97ee 4754 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4139b2b1 4755 struct qeth_link_info *link_info = reply->param;
02d5cb5b 4756 struct qeth_query_card_info *card_info;
02d5cb5b
EC		 4757
4758 QETH_CARD_TEXT(card, 2, "qcrdincb");
686c97ee 4759 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 4760 return -EIO;
02d5cb5b 4761
686c97ee 4762 card_info = &cmd->data.setadapterparms.data.card_info;
4139b2b1
JW		 4763 netdev_dbg(card->dev,
4764 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4765 card_info->card_type, card_info->port_mode,
4766 card_info->port_speed);
4767
4768 switch (card_info->port_mode) {
4769 case CARD_INFO_PORTM_FULLDUPLEX:
4770 link_info->duplex = DUPLEX_FULL;
4771 break;
4772 case CARD_INFO_PORTM_HALFDUPLEX:
4773 link_info->duplex = DUPLEX_HALF;
4774 break;
4775 default:
4776 link_info->duplex = DUPLEX_UNKNOWN;
4777 }
4778
4779 switch (card_info->card_type) {
4780 case CARD_INFO_TYPE_1G_COPPER_A:
4781 case CARD_INFO_TYPE_1G_COPPER_B:
4782 link_info->speed = SPEED_1000;
4783 link_info->port = PORT_TP;
4784 break;
4785 case CARD_INFO_TYPE_1G_FIBRE_A:
4786 case CARD_INFO_TYPE_1G_FIBRE_B:
4787 link_info->speed = SPEED_1000;
4788 link_info->port = PORT_FIBRE;
4789 break;
4790 case CARD_INFO_TYPE_10G_FIBRE_A:
4791 case CARD_INFO_TYPE_10G_FIBRE_B:
4792 link_info->speed = SPEED_10000;
4793 link_info->port = PORT_FIBRE;
4794 break;
4795 default:
4796 switch (card_info->port_speed) {
4797 case CARD_INFO_PORTS_10M:
4798 link_info->speed = SPEED_10;
4799 break;
4800 case CARD_INFO_PORTS_100M:
4801 link_info->speed = SPEED_100;
4802 break;
4803 case CARD_INFO_PORTS_1G:
4804 link_info->speed = SPEED_1000;
4805 break;
4806 case CARD_INFO_PORTS_10G:
4807 link_info->speed = SPEED_10000;
4808 break;
4809 case CARD_INFO_PORTS_25G:
4810 link_info->speed = SPEED_25000;
4811 break;
4812 default:
4813 link_info->speed = SPEED_UNKNOWN;
4814 }
4815
4816 link_info->port = PORT_OTHER;
4817 }
4818
02d5cb5b
EC		 4819 return 0;
4820}
4821
d896ac62 4822int qeth_query_card_info(struct qeth_card *card,
4139b2b1 4823 struct qeth_link_info *link_info)
02d5cb5b
EC		 4824{
4825 struct qeth_cmd_buffer *iob;
4826
4827 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4828 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4829 return -EOPNOTSUPP;
b9150461 4830 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
1aec42bc
TR		 4831 if (!iob)
4832 return -ENOMEM;
4139b2b1
JW		 4833
4834 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
02d5cb5b 4835}
02d5cb5b 4836
e92d42e7
JW		 4837static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4838 struct qeth_reply *reply_priv,
4839 unsigned long data)
4840{
4841 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4842 struct qeth_link_info *link_info = reply_priv->param;
4843 struct qeth_query_oat_physical_if *phys_if;
4844 struct qeth_query_oat_reply *reply;
4845
4846 if (qeth_setadpparms_inspect_rc(cmd))
4847 return -EIO;
4848
4849 /* Multi-part reply is unexpected, don't bother: */
4850 if (cmd->data.setadapterparms.hdr.used_total > 1)
4851 return -EINVAL;
4852
4853 /* Expect the reply to start with phys_if data: */
4854 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4855 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4856 reply->length < sizeof(*reply))
4857 return -EINVAL;
4858
4859 phys_if = &reply->phys_if;
4860
4861 switch (phys_if->speed_duplex) {
4862 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4863 link_info->speed = SPEED_10;
4864 link_info->duplex = DUPLEX_HALF;
4865 break;
4866 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4867 link_info->speed = SPEED_10;
4868 link_info->duplex = DUPLEX_FULL;
4869 break;
4870 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4871 link_info->speed = SPEED_100;
4872 link_info->duplex = DUPLEX_HALF;
4873 break;
4874 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4875 link_info->speed = SPEED_100;
4876 link_info->duplex = DUPLEX_FULL;
4877 break;
4878 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4879 link_info->speed = SPEED_1000;
4880 link_info->duplex = DUPLEX_HALF;
4881 break;
4882 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4883 link_info->speed = SPEED_1000;
4884 link_info->duplex = DUPLEX_FULL;
4885 break;
4886 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4887 link_info->speed = SPEED_10000;
4888 link_info->duplex = DUPLEX_FULL;
4889 break;
4890 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4891 link_info->speed = SPEED_25000;
4892 link_info->duplex = DUPLEX_FULL;
4893 break;
4894 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4895 default:
4896 link_info->speed = SPEED_UNKNOWN;
4897 link_info->duplex = DUPLEX_UNKNOWN;
4898 break;
4899 }
4900
4901 switch (phys_if->media_type) {
4902 case QETH_QOAT_PHYS_MEDIA_COPPER:
4903 link_info->port = PORT_TP;
235db527 4904 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4905 break;
4906 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
235db527
JW		 4907 link_info->port = PORT_FIBRE;
4908 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4909 break;
e92d42e7
JW		 4910 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4911 link_info->port = PORT_FIBRE;
235db527 4912 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
e92d42e7
JW		 4913 break;
4914 default:
4915 link_info->port = PORT_OTHER;
235db527 4916 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4917 break;
4918 }
4919
4920 return 0;
4921}
4922
baf7998d
JW		 4923static void qeth_init_link_info(struct qeth_card *card)
4924{
4925 card->info.link_info.duplex = DUPLEX_FULL;
4926
4927 if (IS_IQD(card) || IS_VM_NIC(card)) {
4928 card->info.link_info.speed = SPEED_10000;
4929 card->info.link_info.port = PORT_FIBRE;
235db527 4930 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
baf7998d
JW		 4931 } else {
4932 switch (card->info.link_type) {
4933 case QETH_LINK_TYPE_FAST_ETH:
4934 case QETH_LINK_TYPE_LANE_ETH100:
4935 card->info.link_info.speed = SPEED_100;
4936 card->info.link_info.port = PORT_TP;
4937 break;
4938 case QETH_LINK_TYPE_GBIT_ETH:
4939 case QETH_LINK_TYPE_LANE_ETH1000:
4940 card->info.link_info.speed = SPEED_1000;
4941 card->info.link_info.port = PORT_FIBRE;
4942 break;
4943 case QETH_LINK_TYPE_10GBIT_ETH:
4944 card->info.link_info.speed = SPEED_10000;
4945 card->info.link_info.port = PORT_FIBRE;
4946 break;
4947 case QETH_LINK_TYPE_25GBIT_ETH:
4948 card->info.link_info.speed = SPEED_25000;
4949 card->info.link_info.port = PORT_FIBRE;
4950 break;
4951 default:
4952 dev_info(&card->gdev->dev, "Unknown link type %x\n",
4953 card->info.link_type);
4954 card->info.link_info.speed = SPEED_UNKNOWN;
4955 card->info.link_info.port = PORT_OTHER;
4956 }
235db527
JW		 4957
4958 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
baf7998d 4959 }
e92d42e7
JW		 4960
4961 /* Get more accurate data via QUERY OAT: */
4962 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4963 struct qeth_link_info link_info;
4964 struct qeth_cmd_buffer *iob;
4965
4966 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4967 SETADP_DATA_SIZEOF(query_oat));
4968 if (iob) {
4969 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4970 struct qeth_query_oat *oat_req;
4971
4972 oat_req = &cmd->data.setadapterparms.data.query_oat;
4973 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4974
4975 if (!qeth_send_ipa_cmd(card, iob,
4976 qeth_init_link_info_oat_cb,
4977 &link_info)) {
4978 if (link_info.speed != SPEED_UNKNOWN)
4979 card->info.link_info.speed = link_info.speed;
4980 if (link_info.duplex != DUPLEX_UNKNOWN)
4981 card->info.link_info.duplex = link_info.duplex;
4982 if (link_info.port != PORT_OTHER)
4983 card->info.link_info.port = link_info.port;
235db527
JW		 4984 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4985 card->info.link_info.link_mode = link_info.link_mode;
e92d42e7
JW		 4986 }
4987 }
4988 }
baf7998d
JW		 4989}
4990
ec61bd2f
JW		 4991/**
4992 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4993 * @card: pointer to a qeth_card
4994 *
4995 * Returns
4996 * 0, if a MAC address has been set for the card's netdevice
4997 * a return code, for various error conditions
4998 */
4999int qeth_vm_request_mac(struct qeth_card *card)
5000{
5001 struct diag26c_mac_resp *response;
5002 struct diag26c_mac_req *request;
ec61bd2f
JW		 5003 int rc;
5004
57a688aa 5005 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 5006
ec61bd2f
JW		 5007 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5008 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5009 if (!request || !response) {
5010 rc = -ENOMEM;
5011 goto out;
5012 }
5013
ec61bd2f
JW		 5014 request->resp_buf_len = sizeof(*response);
5015 request->resp_version = DIAG26C_VERSION2;
5016 request->op_code = DIAG26C_GET_MAC;
fa115adf 5017 request->devno = card->info.ddev_devno;
ec61bd2f 5018
615dff22 5019 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 5020 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 5021 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 5022 if (rc)
5023 goto out;
615dff22 5024 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 5025
5026 if (request->resp_buf_len < sizeof(*response) ||
5027 response->version != request->resp_version) {
5028 rc = -EIO;
57a688aa
JW		 5029 QETH_CARD_TEXT(card, 2, "badresp");
5030 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5031 sizeof(request->resp_buf_len));
ec61bd2f
JW		 5032 } else if (!is_valid_ether_addr(response->mac)) {
5033 rc = -EINVAL;
57a688aa
JW		 5034 QETH_CARD_TEXT(card, 2, "badmac");
5035 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f 5036 } else {
978bb0ae 5037 eth_hw_addr_set(card->dev, response->mac);
ec61bd2f
JW		 5038 }
5039
5040out:
5041 kfree(response);
5042 kfree(request);
5043 return rc;
5044}
5045EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5046
d0ff1f52
UB		 5047static void qeth_determine_capabilities(struct qeth_card *card)
5048{
f9e50b02
JW		 5049 struct qeth_channel *channel = &card->data;
5050 struct ccw_device *ddev = channel->ccwdev;
d0ff1f52 5051 int rc;
d0ff1f52
UB		 5052 int ddev_offline = 0;
5053
57a688aa 5054 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 5055 if (!ddev->online) {
5056 ddev_offline = 1;
871602b1 5057 rc = qeth_start_channel(channel);
d0ff1f52 5058 if (rc) {
57a688aa 5059 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 5060 goto out;
5061 }
5062 }
5063
2066e1db 5064 rc = qeth_read_conf_data(card);
d0ff1f52 5065 if (rc) {
e19e5be8
JW		 5066 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5067 CARD_DEVID(card), rc);
57a688aa 5068 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 5069 goto out_offline;
5070 }
d0ff1f52
UB		 5071
5072 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5073 if (rc)
57a688aa 5074 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 5075
57a688aa
JW		 5076 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5077 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5078 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5079 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5080 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 5081 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5082 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5083 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5084 dev_info(&card->gdev->dev,
5085 "Completion Queueing supported\n");
5086 } else {
5087 card->options.cq = QETH_CQ_NOTAVAILABLE;
5088 }
5089
d0ff1f52
UB		 5090out_offline:
5091 if (ddev_offline == 1)
f9e50b02 5092 qeth_stop_channel(channel);
d0ff1f52
UB		 5093out:
5094 return;
5095}
5096
fa115adf
AW		 5097static void qeth_read_ccw_conf_data(struct qeth_card *card)
5098{
5099 struct qeth_card_info *info = &card->info;
5100 struct ccw_device *cdev = CARD_DDEV(card);
5101 struct ccw_dev_id dev_id;
5102
5103 QETH_CARD_TEXT(card, 2, "ccwconfd");
5104 ccw_device_get_id(cdev, &dev_id);
5105
5106 info->ddev_devno = dev_id.devno;
5107 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5108 !ccw_device_get_iid(cdev, &info->iid) &&
5109 !ccw_device_get_chid(cdev, 0, &info->chid);
5110 info->ssid = dev_id.ssid;
5111
5112 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5113 info->chid, info->chpid);
5114
5115 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5116 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5117 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5118 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5119 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5120 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5121 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5122}
5123
4a71df50
FB		 5124static int qeth_qdio_establish(struct qeth_card *card)
5125{
d8564e19
JW		 5126 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5127 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
72d5e850 5128 struct qeth_qib_parms *qib_parms = NULL;
4a71df50 5129 struct qdio_initialize init_data;
dc15012b 5130 unsigned int no_input_qs = 1;
d8564e19 5131 unsigned int i;
4a71df50
FB		 5132 int rc = 0;
5133
57a688aa 5134 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 5135
72d5e850
JW		 5136 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5137 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5138 if (!qib_parms)
5139 return -ENOMEM;
4a71df50 5140
72d5e850
JW		 5141 qeth_fill_qib_parms(card, qib_parms);
5142 }
4a71df50 5143
d8564e19 5144 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
dc15012b 5145 if (card->options.cq == QETH_CQ_ENABLED) {
d8564e19 5146 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
dc15012b
JW		 5147 no_input_qs++;
5148 }
e9091ffd 5149
d8564e19
JW		 5150 for (i = 0; i < card->qdio.no_out_queues; i++)
5151 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
4a71df50
FB		 5152
5153 memset(&init_data, 0, sizeof(struct qdio_initialize));
379ac99e
JW		 5154 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5155 QDIO_QETH_QFMT;
4a71df50 5156 init_data.qib_param_field_format = 0;
72d5e850 5157 init_data.qib_param_field = (void *)qib_parms;
dc15012b 5158 init_data.no_input_qs = no_input_qs;
4a71df50 5159 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 5160 init_data.input_handler = qeth_qdio_input_handler;
5161 init_data.output_handler = qeth_qdio_output_handler;
0a6e6345 5162 init_data.irq_poll = qeth_qdio_poll;
4a71df50 5163 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 5164 init_data.input_sbal_addr_array = in_sbal_ptrs;
5165 init_data.output_sbal_addr_array = out_sbal_ptrs;
4a71df50
FB		 5166
5167 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5168 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3db1db93
JW		 5169 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5170 init_data.no_output_qs);
cc961d40
JG		 5171 if (rc) {
5172 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5173 goto out;
5174 }
1da1092d 5175 rc = qdio_establish(CARD_DDEV(card), &init_data);
cc961d40 5176 if (rc) {
4a71df50 5177 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 5178 qdio_free(CARD_DDEV(card));
5179 }
4a71df50 5180 }
0da9581d
EL		 5181
5182 switch (card->options.cq) {
5183 case QETH_CQ_ENABLED:
5184 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5185 break;
5186 case QETH_CQ_DISABLED:
5187 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5188 break;
5189 default:
5190 break;
5191 }
72d5e850 5192
cc961d40 5193out:
72d5e850 5194 kfree(qib_parms);
4a71df50
FB		 5195 return rc;
5196}
5197
5198static void qeth_core_free_card(struct qeth_card *card)
5199{
57a688aa 5200 QETH_CARD_TEXT(card, 2, "freecrd");
fb8d2580
JW		 5201
5202 unregister_service_level(&card->qeth_service_level);
5203 debugfs_remove_recursive(card->debugfs);
c3b2218d 5204 qeth_put_cmd(card->read_cmd);
c0a2e4d1 5205 destroy_workqueue(card->event_wq);
a2eb0ad5 5206 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 5207 kfree(card);
5208}
5209
b7ea041b 5210static void qeth_trace_features(struct qeth_card *card)
395672e0
SR		 5211{
5212 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 5213 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5214 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5215 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5216 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5217 sizeof(card->info.diagass_support));
395672e0 5218}
395672e0 5219
4a71df50 5220static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 5221 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5222 .driver_info = QETH_CARD_TYPE_OSD},
5223 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5224 .driver_info = QETH_CARD_TYPE_IQD},
5113fec0
UB		 5225 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5226 .driver_info = QETH_CARD_TYPE_OSM},
4e2b5aa5 5227#ifdef CONFIG_QETH_OSX
5113fec0
UB		 5228 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5229 .driver_info = QETH_CARD_TYPE_OSX},
4e2b5aa5 5230#endif
4a71df50
FB		 5231 {},
5232};
5233MODULE_DEVICE_TABLE(ccw, qeth_ids);
5234
5235static struct ccw_driver qeth_ccw_driver = {
3bda058b 5236 .driver = {
3e70b3b8 5237 .owner = THIS_MODULE,
3bda058b
SO		 5238 .name = "qeth",
5239 },
4a71df50
FB		 5240 .ids = qeth_ids,
5241 .probe = ccwgroup_probe_ccwdev,
5242 .remove = ccwgroup_remove_ccwdev,
5243};
5244
b7ea041b 5245static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 5246{
6ebb7f8d 5247 int retries = 3;
4a71df50
FB		 5248 int rc;
5249
57a688aa 5250 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 5251 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 5252 rc = qeth_update_from_chp_desc(card);
5253 if (rc)
5254 return rc;
4a71df50 5255retry:
6ebb7f8d 5256 if (retries < 3)
e19e5be8
JW		 5257 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5258 CARD_DEVID(card));
379ac99e 5259 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
f9e50b02
JW		 5260 qeth_stop_channel(&card->data);
5261 qeth_stop_channel(&card->write);
5262 qeth_stop_channel(&card->read);
22ae2790 5263 qdio_free(CARD_DDEV(card));
871602b1
JW		 5264
5265 rc = qeth_start_channel(&card->read);
aa909224
UB		 5266 if (rc)
5267 goto retriable;
871602b1 5268 rc = qeth_start_channel(&card->write);
aa909224
UB		 5269 if (rc)
5270 goto retriable;
871602b1 5271 rc = qeth_start_channel(&card->data);
aa909224
UB		 5272 if (rc)
5273 goto retriable;
aa909224 5274retriable:
4a71df50 5275 if (rc == -ERESTARTSYS) {
57a688aa 5276 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 5277 return rc;
5278 } else if (rc) {
57a688aa 5279 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 5280 if (--retries < 0)
4a71df50
FB		 5281 goto out;
5282 else
5283 goto retry;
5284 }
7f23d55f 5285
d0ff1f52 5286 qeth_determine_capabilities(card);
fa115adf 5287 qeth_read_ccw_conf_data(card);
7f23d55f 5288 qeth_idx_init(card);
2e873d10
JW		 5289
5290 rc = qeth_idx_activate_read_channel(card);
5291 if (rc == -EINTR) {
57a688aa 5292 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 5293 return rc;
5294 } else if (rc) {
57a688aa 5295 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 5296 if (--retries < 0)
5297 goto out;
5298 else
5299 goto retry;
5300 }
2e873d10
JW		 5301
5302 rc = qeth_idx_activate_write_channel(card);
5303 if (rc == -EINTR) {
57a688aa 5304 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 5305 return rc;
5306 } else if (rc) {
57a688aa 5307 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5308 if (--retries < 0)
5309 goto out;
5310 else
5311 goto retry;
5312 }
908abbb5 5313 card->read_or_write_problem = 0;
4a71df50
FB		 5314 rc = qeth_mpc_initialize(card);
5315 if (rc) {
57a688aa 5316 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5317 goto out;
5318 }
1da74b1c 5319
10340510
JW		 5320 rc = qeth_send_startlan(card);
5321 if (rc) {
57a688aa 5322 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5323 if (rc == -ENETDOWN) {
5324 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5325 *carrier_ok = false;
10340510 5326 } else {
10340510
JW		 5327 goto out;
5328 }
91cc98f5 5329 } else {
9fae5c3b
JW		 5330 *carrier_ok = true;
5331 }
5332
52f82bf1
JW		 5333 card->options.ipa4.supported = 0;
5334 card->options.ipa6.supported = 0;
5335 card->options.adp.supported = 0;
b4d72c08 5336 card->options.sbp.supported_funcs = 0;
1da74b1c 5337 card->info.diagass_support = 0;
1aec42bc
TR		 5338 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5339 if (rc == -ENOMEM)
5340 goto out;
ee75fb86
KM		 5341 if (qeth_is_supported(card, IPA_IPV6)) {
5342 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5343 if (rc == -ENOMEM)
5344 goto out;
5345 }
1aec42bc
TR		 5346 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5347 rc = qeth_query_setadapterparms(card);
5348 if (rc < 0) {
57a688aa 5349 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5350 goto out;
5351 }
5352 }
5353 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5354 rc = qeth_query_setdiagass(card);
0b698c83 5355 if (rc)
57a688aa 5356 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc 5357 }
9897d583 5358
b7ea041b
JW		 5359 qeth_trace_features(card);
5360
9897d583
JW		 5361 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5362 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5363 card->info.hwtrap = 0;
5364
08e95cae 5365 if (card->options.isolation != ISOLATION_MODE_NONE) {
65878fd9
JW		 5366 rc = qeth_setadpparms_set_access_ctrl(card,
5367 card->options.isolation);
08e95cae
JW		 5368 if (rc)
5369 goto out;
5370 }
9897d583 5371
baf7998d
JW		 5372 qeth_init_link_info(card);
5373
aa3ad392
JW		 5374 rc = qeth_init_qdio_queues(card);
5375 if (rc) {
5376 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5377 goto out;
5378 }
5379
4a71df50
FB		 5380 return 0;
5381out:
74eacdb9
FB		 5382 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5383 "an error on the device\n");
e19e5be8
JW		 5384 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5385 CARD_DEVID(card), rc);
4a71df50
FB		 5386 return rc;
5387}
4a71df50 5388
0b9902c1
JW		 5389static int qeth_set_online(struct qeth_card *card,
5390 const struct qeth_discipline *disc)
91003f35 5391{
b7ea041b 5392 bool carrier_ok;
91003f35
JW		 5393 int rc;
5394
91003f35
JW		 5395 mutex_lock(&card->conf_mutex);
5396 QETH_CARD_TEXT(card, 2, "setonlin");
5397
b7ea041b
JW		 5398 rc = qeth_hardsetup_card(card, &carrier_ok);
5399 if (rc) {
5400 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5401 rc = -ENODEV;
5402 goto err_hardsetup;
5403 }
5404
5405 qeth_print_status_message(card);
5406
949bbf4d 5407 if (card->dev->reg_state != NETREG_REGISTERED)
bb5ab541
JW		 5408 /* no need for locking / error handling at this early stage: */
5409 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
bb5ab541 5410
0b9902c1 5411 rc = disc->set_online(card, carrier_ok);
b7ea041b
JW		 5412 if (rc)
5413 goto err_online;
5414
5415 /* let user_space know that device is online */
5416 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
91003f35
JW		 5417
5418 mutex_unlock(&card->conf_mutex);
b7ea041b 5419 return 0;
91003f35 5420
b7ea041b
JW		 5421err_online:
5422err_hardsetup:
f2bcf9dd
JW		 5423 qeth_qdio_clear_card(card, 0);
5424 qeth_clear_working_pool_list(card);
5425 qeth_flush_local_addrs(card);
5426
b7ea041b
JW		 5427 qeth_stop_channel(&card->data);
5428 qeth_stop_channel(&card->write);
5429 qeth_stop_channel(&card->read);
5430 qdio_free(CARD_DDEV(card));
5431
5432 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5433 return rc;
5434}
5435
0b9902c1
JW		 5436int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5437 bool resetting)
91003f35
JW		 5438{
5439 int rc, rc2, rc3;
5440
91003f35
JW		 5441 mutex_lock(&card->conf_mutex);
5442 QETH_CARD_TEXT(card, 3, "setoffl");
5443
5444 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5445 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5446 card->info.hwtrap = 1;
5447 }
5448
7fb7fe5c
JW		 5449 /* cancel any stalled cmd that might block the rtnl: */
5450 qeth_clear_ipacmd_list(card);
5451
91003f35
JW		 5452 rtnl_lock();
5453 card->info.open_when_online = card->dev->flags & IFF_UP;
5454 dev_close(card->dev);
5455 netif_device_detach(card->dev);
5456 netif_carrier_off(card->dev);
5457 rtnl_unlock();
5458
f2bcf9dd
JW		 5459 cancel_work_sync(&card->rx_mode_work);
5460
0b9902c1 5461 disc->set_offline(card);
91003f35 5462
f2bcf9dd
JW		 5463 qeth_qdio_clear_card(card, 0);
5464 qeth_drain_output_queues(card);
5465 qeth_clear_working_pool_list(card);
5466 qeth_flush_local_addrs(card);
5467 card->info.promisc_mode = 0;
5468
91003f35
JW		 5469 rc = qeth_stop_channel(&card->data);
5470 rc2 = qeth_stop_channel(&card->write);
5471 rc3 = qeth_stop_channel(&card->read);
5472 if (!rc)
5473 rc = (rc2) ? rc2 : rc3;
5474 if (rc)
5475 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5476 qdio_free(CARD_DDEV(card));
5477
5478 /* let user_space know that device is offline */
5479 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5480
5481 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5482 return 0;
5483}
5484EXPORT_SYMBOL_GPL(qeth_set_offline);
5485
5486static int qeth_do_reset(void *data)
5487{
0b9902c1 5488 const struct qeth_discipline *disc;
91003f35
JW		 5489 struct qeth_card *card = data;
5490 int rc;
5491
0b9902c1
JW		 5492 /* Lock-free, other users will block until we are done. */
5493 disc = card->discipline;
5494
91003f35
JW		 5495 QETH_CARD_TEXT(card, 2, "recover1");
5496 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5497 return 0;
5498 QETH_CARD_TEXT(card, 2, "recover2");
5499 dev_warn(&card->gdev->dev,
5500 "A recovery process has been started for the device\n");
5501
0b9902c1
JW		 5502 qeth_set_offline(card, disc, true);
5503 rc = qeth_set_online(card, disc);
91003f35
JW		 5504 if (!rc) {
5505 dev_info(&card->gdev->dev,
5506 "Device successfully recovered!\n");
5507 } else {
d2b59bd4
AW		 5508 qeth_set_offline(card, disc, true);
5509 ccwgroup_set_offline(card->gdev, false);
91003f35
JW		 5510 dev_warn(&card->gdev->dev,
5511 "The qeth device driver failed to recover an error on the device\n");
5512 }
5513 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5514 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5515 return 0;
5516}
5517
c04b116a
JW		 5518#if IS_ENABLED(CONFIG_QETH_L3)
5519static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5520 struct qeth_hdr *hdr)
5521{
5522 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5523 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5524 struct net_device *dev = skb->dev;
5525
5526 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5527 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5528 "FAKELL", skb->len);
5529 return;
5530 }
5531
5532 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5533 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5534 ETH_P_IP;
5535 unsigned char tg_addr[ETH_ALEN];
5536
5537 skb_reset_network_header(skb);
5538 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5539 case QETH_CAST_MULTICAST:
5540 if (prot == ETH_P_IP)
5541 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5542 else
5543 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5544 QETH_CARD_STAT_INC(card, rx_multicast);
5545 break;
5546 case QETH_CAST_BROADCAST:
5547 ether_addr_copy(tg_addr, dev->broadcast);
5548 QETH_CARD_STAT_INC(card, rx_multicast);
5549 break;
5550 default:
5551 if (card->options.sniffer)
5552 skb->pkt_type = PACKET_OTHERHOST;
5553 ether_addr_copy(tg_addr, dev->dev_addr);
5554 }
5555
5556 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5557 dev_hard_header(skb, dev, prot, tg_addr,
5558 &l3_hdr->next_hop.rx.src_mac, skb->len);
5559 else
5560 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5561 skb->len);
5562 }
5563
5564 /* copy VLAN tag from hdr into skb */
5565 if (!card->options.sniffer &&
5566 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5567 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5568 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5569 l3_hdr->vlan_id :
5570 l3_hdr->next_hop.rx.vlan_id;
5571
5572 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5573 }
5574}
5575#endif
5576
5577static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5e9756a6 5578 bool uses_frags, bool is_cso)
c04b116a 5579{
dcdcf867 5580 struct napi_struct *napi = &card->napi;
c04b116a
JW		 5581
5582 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5583 skb->ip_summed = CHECKSUM_UNNECESSARY;
5584 QETH_CARD_STAT_INC(card, rx_skb_csum);
5585 } else {
5586 skb->ip_summed = CHECKSUM_NONE;
5587 }
5588
c04b116a
JW		 5589 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5590 QETH_CARD_STAT_INC(card, rx_packets);
5591 if (skb_is_nonlinear(skb)) {
5592 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5593 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5594 skb_shinfo(skb)->nr_frags);
5595 }
5596
dcdcf867
JW		 5597 if (uses_frags) {
5598 napi_gro_frags(napi);
5599 } else {
5600 skb->protocol = eth_type_trans(skb, skb->dev);
5601 napi_gro_receive(napi, skb);
5602 }
c04b116a
JW		 5603}
5604
f677fcb9 5605static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
4a71df50 5606{
f677fcb9 5607 struct page *page = virt_to_page(data);
b6f72f96 5608 unsigned int next_frag;
b3332930 5609
8d68af6a 5610 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5611 get_page(page);
f677fcb9
JW		 5612 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5613 data_len);
4a71df50
FB		 5614}
5615
bca51650
TR		 5616static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5617{
5618 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5619}
5620
c04b116a 5621static int qeth_extract_skb(struct qeth_card *card,
ed13615d 5622 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
c04b116a 5623 int *__offset)
4a71df50 5624{
562cf773 5625 struct qeth_priv *priv = netdev_priv(card->dev);
b3332930 5626 struct qdio_buffer *buffer = qethbuffer->buffer;
dcdcf867 5627 struct napi_struct *napi = &card->napi;
ed13615d 5628 struct qdio_buffer_element *element;
f677fcb9 5629 unsigned int linear_len = 0;
dcdcf867 5630 bool uses_frags = false;
4a71df50 5631 int offset = *__offset;
17caeaa4 5632 bool use_rx_sg = false;
f677fcb9 5633 unsigned int headroom;
c04b116a 5634 struct qeth_hdr *hdr;
8d68af6a 5635 struct sk_buff *skb;
76b11f8e 5636 int skb_len = 0;
5e9756a6 5637 bool is_cso;
4a71df50 5638
ed13615d
JW		 5639 element = &buffer->element[*element_no];
5640
7d4faee7 5641next_packet:
4a71df50 5642 /* qeth_hdr must not cross element boundaries */
864c17c3 5643 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50 5644 if (qeth_is_last_sbale(element))
c04b116a 5645 return -ENODATA;
4a71df50
FB		 5646 element++;
5647 offset = 0;
4a71df50 5648 }
4a71df50 5649
2db01da8 5650 hdr = phys_to_virt(element->addr) + offset;
c04b116a 5651 offset += sizeof(*hdr);
5b55633f
JW		 5652 skb = NULL;
5653
c04b116a 5654 switch (hdr->hdr.l2.id) {
76b11f8e 5655 case QETH_HEADER_TYPE_LAYER2:
c04b116a 5656 skb_len = hdr->hdr.l2.pkt_length;
5e9756a6
JW		 5657 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5658
5b55633f 5659 linear_len = ETH_HLEN;
17caeaa4 5660 headroom = 0;
76b11f8e
UB		 5661 break;
5662 case QETH_HEADER_TYPE_LAYER3:
c04b116a 5663 skb_len = hdr->hdr.l3.length;
5e9756a6
JW		 5664 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5665
7d4faee7
JW		 5666 if (!IS_LAYER3(card)) {
5667 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5668 goto walk_packet;
5669 }
5670
c04b116a 5671 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5b55633f
JW		 5672 linear_len = ETH_HLEN;
5673 headroom = 0;
5674 break;
5675 }
5676
c04b116a 5677 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5b55633f
JW		 5678 linear_len = sizeof(struct ipv6hdr);
5679 else
5680 linear_len = sizeof(struct iphdr);
1abd2296 5681 headroom = ETH_HLEN;
76b11f8e 5682 break;
76b11f8e 5683 default:
c04b116a 5684 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5fd3fcbb
JW		 5685 QETH_CARD_STAT_INC(card, rx_frame_errors);
5686 else
5687 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5688
7d4faee7 5689 /* Can't determine packet length, drop the whole buffer. */
c04b116a 5690 return -EPROTONOSUPPORT;
4a71df50
FB		 5691 }
5692
5b55633f
JW		 5693 if (skb_len < linear_len) {
5694 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5695 goto walk_packet;
5696 }
4a71df50 5697
17caeaa4 5698 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
562cf773 5699 (skb_len > READ_ONCE(priv->rx_copybreak) &&
a8c7629c 5700 !atomic_read(&card->force_alloc_skb));
8d68af6a 5701
dcdcf867 5702 if (use_rx_sg) {
8d68af6a 5703 /* QETH_CQ_ENABLED only: */
8ca8559f
JW		 5704 if (qethbuffer->rx_skb &&
5705 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
dcdcf867
JW		 5706 skb = qethbuffer->rx_skb;
5707 qethbuffer->rx_skb = NULL;
5708 goto use_skb;
5709 }
5710
5711 skb = napi_get_frags(napi);
5712 if (!skb) {
5713 /* -ENOMEM, no point in falling back further. */
5714 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5715 goto walk_packet;
5716 }
5717
5718 if (skb_tailroom(skb) >= linear_len + headroom) {
5719 uses_frags = true;
5720 goto use_skb;
5721 }
5722
5723 netdev_info_once(card->dev,
5724 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5725 linear_len + headroom, skb_tailroom(skb));
5726 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
4a71df50 5727 }
17caeaa4 5728
dcdcf867
JW		 5729 linear_len = skb_len;
5730 skb = napi_alloc_skb(napi, linear_len + headroom);
5731 if (!skb) {
17caeaa4 5732 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
dcdcf867
JW		 5733 goto walk_packet;
5734 }
4a71df50 5735
dcdcf867
JW		 5736use_skb:
5737 if (headroom)
5738 skb_reserve(skb, headroom);
7d4faee7 5739walk_packet:
4a71df50 5740 while (skb_len) {
f677fcb9 5741 int data_len = min(skb_len, (int)(element->length - offset));
2db01da8 5742 char *data = phys_to_virt(element->addr) + offset;
f677fcb9
JW		 5743
5744 skb_len -= data_len;
5745 offset += data_len;
7d4faee7 5746
f677fcb9 5747 /* Extract data from current element: */
7d4faee7 5748 if (skb && data_len) {
f677fcb9
JW		 5749 if (linear_len) {
5750 unsigned int copy_len;
5751
5752 copy_len = min_t(unsigned int, linear_len,
5753 data_len);
5754
5755 skb_put_data(skb, data, copy_len);
5756 linear_len -= copy_len;
5757 data_len -= copy_len;
5758 data += copy_len;
5759 }
5760
5761 if (data_len)
5762 qeth_create_skb_frag(skb, data, data_len);
4a71df50 5763 }
f677fcb9
JW		 5764
5765 /* Step forward to next element: */
4a71df50
FB		 5766 if (skb_len) {
5767 if (qeth_is_last_sbale(element)) {
847a50fd 5768 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5769 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7 5770 if (skb) {
dcdcf867
JW		 5771 if (uses_frags)
5772 napi_free_frags(napi);
5773 else
fdd3c5f0 5774 kfree_skb(skb);
7d4faee7
JW		 5775 QETH_CARD_STAT_INC(card,
5776 rx_length_errors);
5777 }
c04b116a 5778 return -EMSGSIZE;
4a71df50
FB		 5779 }
5780 element++;
5781 offset = 0;
4a71df50
FB		 5782 }
5783 }
7d4faee7
JW		 5784
5785 /* This packet was skipped, go get another one: */
5786 if (!skb)
5787 goto next_packet;
5788
ed13615d 5789 *element_no = element - &buffer->element[0];
4a71df50 5790 *__offset = offset;
c04b116a 5791
5e9756a6
JW		 5792#if IS_ENABLED(CONFIG_QETH_L3)
5793 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5794 qeth_l3_rebuild_skb(card, skb, hdr);
5795#endif
5796
5797 qeth_receive_skb(card, skb, uses_frags, is_cso);
c04b116a
JW		 5798 return 0;
5799}
5800
781b9a18
JW		 5801static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5802 struct qeth_qdio_buffer *buf, bool *done)
c04b116a 5803{
781b9a18 5804 unsigned int work_done = 0;
c04b116a
JW		 5805
5806 while (budget) {
ed13615d 5807 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
c04b116a
JW		 5808 &card->rx.e_offset)) {
5809 *done = true;
5810 break;
5811 }
5812
5813 work_done++;
5814 budget--;
4a71df50 5815 }
c04b116a
JW		 5816
5817 return work_done;
4a71df50 5818}
4a71df50 5819
781b9a18 5820static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
d73ef324 5821{
7c94a882 5822 struct qeth_rx *ctx = &card->rx;
781b9a18 5823 unsigned int work_done = 0;
d73ef324 5824
781b9a18 5825 while (budget > 0) {
b439044b
JW		 5826 struct qeth_qdio_buffer *buffer;
5827 unsigned int skbs_done = 0;
5828 bool done = false;
5829
781b9a18 5830 /* Fetch completed RX buffers: */
d73ef324
JW		 5831 if (!card->rx.b_count) {
5832 card->rx.qdio_err = 0;
7a4b92e8
JW		 5833 card->rx.b_count = qdio_inspect_queue(CARD_DDEV(card),
5834 0, true,
5835 &card->rx.b_index,
5836 &card->rx.qdio_err);
d73ef324
JW		 5837 if (card->rx.b_count <= 0) {
5838 card->rx.b_count = 0;
5839 break;
5840 }
d73ef324
JW		 5841 }
5842
781b9a18 5843 /* Process one completed RX buffer: */
b439044b
JW		 5844 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5845 if (!(card->rx.qdio_err &&
5846 qeth_check_qdio_errors(card, buffer->buffer,
5847 card->rx.qdio_err, "qinerr")))
5848 skbs_done = qeth_extract_skbs(card, budget, buffer,
5849 &done);
5850 else
5851 done = true;
5852
5853 work_done += skbs_done;
5854 budget -= skbs_done;
5855
5856 if (done) {
5857 QETH_CARD_STAT_INC(card, rx_bufs);
5858 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
eff73e16 5859 buffer->pool_entry = NULL;
b439044b 5860 card->rx.b_count--;
7c94a882
JW		 5861 ctx->bufs_refill++;
5862 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5863 ctx->bufs_refill);
b439044b
JW		 5864
5865 /* Step forward to next buffer: */
5866 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5867 card->rx.buf_element = 0;
5868 card->rx.e_offset = 0;
d73ef324
JW		 5869 }
5870 }
5871
781b9a18
JW		 5872 return work_done;
5873}
5874
0a6e6345
JW		 5875static void qeth_cq_poll(struct qeth_card *card)
5876{
5877 unsigned int work_done = 0;
5878
5879 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5880 unsigned int start, error;
5881 int completed;
5882
5883 completed = qdio_inspect_queue(CARD_DDEV(card), 1, true, &start,
5884 &error);
5885 if (completed <= 0)
5886 return;
5887
5888 qeth_qdio_cq_handler(card, error, 1, start, completed);
5889 work_done += completed;
5890 }
5891}
5892
781b9a18
JW		 5893int qeth_poll(struct napi_struct *napi, int budget)
5894{
5895 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5896 unsigned int work_done;
5897
5898 work_done = qeth_rx_poll(card, budget);
5899
7a4b92e8
JW		 5900 if (qeth_use_tx_irqs(card)) {
5901 struct qeth_qdio_out_q *queue;
5902 unsigned int i;
5903
5904 qeth_for_each_output_queue(card, queue, i) {
5905 if (!qeth_out_queue_is_empty(queue))
5906 napi_schedule(&queue->napi);
5907 }
5908 }
5909
0a6e6345
JW		 5910 if (card->options.cq == QETH_CQ_ENABLED)
5911 qeth_cq_poll(card);
5912
7c94a882
JW		 5913 if (budget) {
5914 struct qeth_rx *ctx = &card->rx;
5915
5916 /* Process any substantial refill backlog: */
5917 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5918
5919 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5920 if (work_done >= budget)
5921 return work_done;
5922 }
781b9a18 5923
f9ce416a 5924 if (napi_complete_done(napi, work_done) &&
0a6e6345 5925 qdio_start_irq(CARD_DDEV(card)))
f9ce416a 5926 napi_schedule(napi);
781b9a18 5927
d73ef324
JW		 5928 return work_done;
5929}
5930EXPORT_SYMBOL_GPL(qeth_poll);
5931
e53edf74 5932static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
7940eaf2
JW		 5933 unsigned int bidx, unsigned int qdio_error,
5934 int budget)
e53edf74
JW		 5935{
5936 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5937 u8 sflags = buffer->buffer->element[15].sflags;
5938 struct qeth_card *card = queue->card;
7940eaf2 5939 bool error = !!qdio_error;
e53edf74 5940
2223318c 5941 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
396c1004 5942 struct qaob *aob = buffer->aob;
838e4cc8 5943 struct qeth_qaob_priv1 *priv;
f875d880 5944 enum iucv_tx_notify notify;
396c1004
JW		 5945
5946 if (!aob) {
5947 netdev_WARN_ONCE(card->dev,
5948 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5949 bidx, queue->queue_no);
5950 qeth_schedule_recovery(card);
5951 return;
5952 }
e53edf74 5953
db4ffdce
JW		 5954 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5955
838e4cc8
JW		 5956 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5957 /* QAOB hasn't completed yet: */
5958 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
e53edf74
JW		 5959 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5960
838e4cc8
JW		 5961 /* Prepare the queue slot for immediate re-use: */
5962 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5963 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5964 QETH_CARD_TEXT(card, 2, "outofbuf");
5965 qeth_schedule_recovery(card);
8908f36d 5966 }
e53edf74 5967
838e4cc8
JW		 5968 list_add(&buffer->list_entry, &queue->pending_bufs);
5969 /* Skip clearing the buffer: */
5970 return;
e53edf74 5971 }
396c1004 5972
838e4cc8
JW		 5973 /* QAOB already completed: */
5974 notify = qeth_compute_cq_notification(aob->aorc, 0);
5975 qeth_notify_skbs(queue, buffer, notify);
5976 error = !!aob->aorc;
396c1004 5977 memset(aob, 0, sizeof(*aob));
db4ffdce 5978 } else if (card->options.cq == QETH_CQ_ENABLED) {
e53edf74
JW		 5979 qeth_notify_skbs(queue, buffer,
5980 qeth_compute_cq_notification(sflags, 0));
db4ffdce
JW		 5981 }
5982
85e537d8 5983 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 5984}
5985
5986static int qeth_tx_poll(struct napi_struct *napi, int budget)
5987{
5988 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5989 unsigned int queue_no = queue->queue_no;
5990 struct qeth_card *card = queue->card;
5991 struct net_device *dev = card->dev;
5992 unsigned int work_done = 0;
5993 struct netdev_queue *txq;
5994
7a4b92e8
JW		 5995 if (IS_IQD(card))
5996 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5997 else
5998 txq = netdev_get_tx_queue(dev, queue_no);
e53edf74
JW		 5999
6000 while (1) {
6001 unsigned int start, error, i;
96bd6c94
JW		 6002 unsigned int packets = 0;
6003 unsigned int bytes = 0;
e53edf74
JW		 6004 int completed;
6005
ad4bbd72 6006 qeth_tx_complete_pending_bufs(card, queue, false, budget);
c20383ad 6007
e53edf74
JW		 6008 if (qeth_out_queue_is_empty(queue)) {
6009 napi_complete(napi);
6010 return 0;
6011 }
6012
6013 /* Give the CPU a breather: */
6014 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6015 QETH_TXQ_STAT_INC(queue, completion_yield);
6016 if (napi_complete_done(napi, 0))
6017 napi_schedule(napi);
6018 return 0;
6019 }
6020
6021 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
6022 &start, &error);
6023 if (completed <= 0) {
6024 /* Ensure we see TX completion for pending work: */
7a4b92e8
JW		 6025 if (napi_complete_done(napi, 0) &&
6026 !atomic_read(&queue->set_pci_flags_count))
6027 qeth_tx_arm_timer(queue, queue->rescan_usecs);
e53edf74
JW		 6028 return 0;
6029 }
6030
6031 for (i = start; i < start + completed; i++) {
96bd6c94 6032 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 6033 unsigned int bidx = QDIO_BUFNR(i);
6034
96bd6c94 6035 buffer = queue->bufs[bidx];
1ab2f8c6 6036 packets += buffer->frames;
96bd6c94
JW		 6037 bytes += buffer->bytes;
6038
6039 qeth_handle_send_error(card, buffer, error);
7a4b92e8
JW		 6040 if (IS_IQD(card))
6041 qeth_iqd_tx_complete(queue, bidx, error, budget);
6042 else
6043 qeth_clear_output_buffer(queue, buffer, error,
6044 budget);
e53edf74
JW		 6045 }
6046
6047 atomic_sub(completed, &queue->used_buffers);
6048 work_done += completed;
7a4b92e8
JW		 6049 if (IS_IQD(card))
6050 netdev_tx_completed_queue(txq, packets, bytes);
6051 else
6052 qeth_check_outbound_queue(queue);
e53edf74
JW		 6053
6054 /* xmit may have observed the full-condition, but not yet
6055 * stopped the txq. In which case the code below won't trigger.
6056 * So before returning, xmit will re-check the txq's fill level
6057 * and wake it up if needed.
6058 */
6059 if (netif_tx_queue_stopped(txq) &&
6060 !qeth_out_queue_is_full(queue))
6061 netif_tx_wake_queue(txq);
6062 }
6063}
6064
ad3cbf61
JW		 6065static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6066{
6067 if (!cmd->hdr.return_code)
6068 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6069 return cmd->hdr.return_code;
6070}
6071
4666d7fb
JW		 6072static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6073 struct qeth_reply *reply,
6074 unsigned long data)
6075{
6076 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6077 struct qeth_ipa_caps *caps = reply->param;
6078
6079 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6080 return -EIO;
4666d7fb
JW		 6081
6082 caps->supported = cmd->data.setassparms.data.caps.supported;
6083 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6084 return 0;
6085}
6086
8f43fb00
TR		 6087int qeth_setassparms_cb(struct qeth_card *card,
6088 struct qeth_reply *reply, unsigned long data)
4d7def2a 6089{
742d4d40 6090 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 6091
6092 QETH_CARD_TEXT(card, 4, "defadpcb");
6093
742d4d40
JW		 6094 if (cmd->hdr.return_code)
6095 return -EIO;
6096
6097 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6098 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
52f82bf1 6099 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
742d4d40 6100 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
52f82bf1 6101 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
4d7def2a
TR		 6102 return 0;
6103}
8f43fb00 6104EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 6105
b475e316
TR		 6106struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6107 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 6108 u16 cmd_code,
6109 unsigned int data_length,
b475e316 6110 enum qeth_prot_versions prot)
4d7def2a 6111{
b9150461
JW		 6112 struct qeth_ipacmd_setassparms *setassparms;
6113 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 6114 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 6115
6116 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 6117 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6118 data_length +
6119 offsetof(struct qeth_ipacmd_setassparms,
6120 data));
6121 if (!iob)
6122 return NULL;
4d7def2a 6123
b9150461
JW		 6124 setassparms = &__ipa_cmd(iob)->data.setassparms;
6125 setassparms->assist_no = ipa_func;
4d7def2a 6126
b9150461
JW		 6127 hdr = &setassparms->hdr;
6128 hdr->length = sizeof(*hdr) + data_length;
6129 hdr->command_code = cmd_code;
4d7def2a
TR		 6130 return iob;
6131}
b475e316 6132EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 6133
a8155b00
KM		 6134int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6135 enum qeth_ipa_funcs ipa_func,
1c696c89 6136 u16 cmd_code, u32 *data,
a8155b00 6137 enum qeth_prot_versions prot)
4d7def2a 6138{
1c696c89 6139 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 6140 struct qeth_cmd_buffer *iob;
6141
a8155b00 6142 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 6143 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 6144 if (!iob)
6145 return -ENOMEM;
4fa55fa9 6146
1c696c89
JW		 6147 if (data)
6148 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 6149 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 6150}
a8155b00 6151EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 6152
4a71df50
FB		 6153static void qeth_unregister_dbf_views(void)
6154{
d11ba0c4 6155 int x;
378ac80d 6156
d11ba0c4
PT		 6157 for (x = 0; x < QETH_DBF_INFOS; x++) {
6158 debug_unregister(qeth_dbf[x].id);
6159 qeth_dbf[x].id = NULL;
6160 }
4a71df50
FB		 6161}
6162
8e96c51c 6163void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 6164{
6165 char dbf_txt_buf[32];
345aa66e 6166 va_list args;
cd023216 6167
8e6a8285 6168 if (!debug_level_enabled(id, level))
cd023216 6169 return;
345aa66e
PT		 6170 va_start(args, fmt);
6171 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6172 va_end(args);
8e96c51c 6173 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 6174}
6175EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6176
4a71df50
FB		 6177static int qeth_register_dbf_views(void)
6178{
d11ba0c4
PT		 6179 int ret;
6180 int x;
6181
6182 for (x = 0; x < QETH_DBF_INFOS; x++) {
6183 /* register the areas */
6184 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6185 qeth_dbf[x].pages,
6186 qeth_dbf[x].areas,
6187 qeth_dbf[x].len);
6188 if (qeth_dbf[x].id == NULL) {
6189 qeth_unregister_dbf_views();
6190 return -ENOMEM;
6191 }
4a71df50 6192
d11ba0c4
PT		 6193 /* register a view */
6194 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6195 if (ret) {
6196 qeth_unregister_dbf_views();
6197 return ret;
6198 }
4a71df50 6199
d11ba0c4
PT		 6200 /* set a passing level */
6201 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6202 }
4a71df50
FB		 6203
6204 return 0;
6205}
6206
a70fee3b
JW		 6207static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6208
ea12f1b3
JW		 6209int qeth_setup_discipline(struct qeth_card *card,
6210 enum qeth_discipline_id discipline)
4a71df50 6211{
ea12f1b3
JW		 6212 int rc;
6213
2022e00c 6214 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 6215 switch (discipline) {
6216 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 6217 card->discipline = try_then_request_module(
6218 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 6219 break;
6220 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 6221 card->discipline = try_then_request_module(
6222 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 6223 break;
c70eb09d
JW		 6224 default:
6225 break;
4a71df50 6226 }
a70fee3b 6227 mutex_unlock(&qeth_mod_mutex);
c70eb09d 6228
c041f2d4 6229 if (!card->discipline) {
74eacdb9
FB		 6230 dev_err(&card->gdev->dev, "There is no kernel module to "
6231 "support discipline %d\n", discipline);
a70fee3b 6232 return -EINVAL;
4a71df50 6233 }
a70fee3b 6234
ea12f1b3
JW		 6235 rc = card->discipline->setup(card->gdev);
6236 if (rc) {
6237 if (discipline == QETH_DISCIPLINE_LAYER2)
6238 symbol_put(qeth_l2_discipline);
6239 else
6240 symbol_put(qeth_l3_discipline);
6241 card->discipline = NULL;
6242
6243 return rc;
6244 }
6245
c1a935f6 6246 card->options.layer = discipline;
a70fee3b 6247 return 0;
4a71df50
FB		 6248}
6249
ea12f1b3 6250void qeth_remove_discipline(struct qeth_card *card)
4a71df50 6251{
ea12f1b3
JW		 6252 card->discipline->remove(card->gdev);
6253
4fda3354 6254 if (IS_LAYER2(card))
c041f2d4 6255 symbol_put(qeth_l2_discipline);
4a71df50 6256 else
c041f2d4 6257 symbol_put(qeth_l3_discipline);
c1a935f6 6258 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 6259 card->discipline = NULL;
4a71df50
FB		 6260}
6261
ae57ea7a 6262static const struct device_type qeth_generic_devtype = {
b7169c51 6263 .name = "qeth_generic",
b7169c51 6264};
b7169c51 6265
819dc537
SR		 6266#define DBF_NAME_LEN 20
6267
6268struct qeth_dbf_entry {
6269 char dbf_name[DBF_NAME_LEN];
6270 debug_info_t *dbf_info;
6271 struct list_head dbf_list;
6272};
6273
6274static LIST_HEAD(qeth_dbf_list);
6275static DEFINE_MUTEX(qeth_dbf_list_mutex);
6276
6277static debug_info_t *qeth_get_dbf_entry(char *name)
6278{
6279 struct qeth_dbf_entry *entry;
6280 debug_info_t *rc = NULL;
6281
6282 mutex_lock(&qeth_dbf_list_mutex);
6283 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6284 if (strcmp(entry->dbf_name, name) == 0) {
6285 rc = entry->dbf_info;
6286 break;
6287 }
6288 }
6289 mutex_unlock(&qeth_dbf_list_mutex);
6290 return rc;
6291}
6292
6293static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6294{
6295 struct qeth_dbf_entry *new_entry;
6296
6297 card->debug = debug_register(name, 2, 1, 8);
6298 if (!card->debug) {
6299 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6300 goto err;
6301 }
6302 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6303 goto err_dbg;
6304 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6305 if (!new_entry)
6306 goto err_dbg;
6307 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6308 new_entry->dbf_info = card->debug;
6309 mutex_lock(&qeth_dbf_list_mutex);
6310 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6311 mutex_unlock(&qeth_dbf_list_mutex);
6312
6313 return 0;
6314
6315err_dbg:
6316 debug_unregister(card->debug);
6317err:
6318 return -ENOMEM;
6319}
6320
6321static void qeth_clear_dbf_list(void)
6322{
6323 struct qeth_dbf_entry *entry, *tmp;
6324
6325 mutex_lock(&qeth_dbf_list_mutex);
6326 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6327 list_del(&entry->dbf_list);
6328 debug_unregister(entry->dbf_info);
6329 kfree(entry);
6330 }
6331 mutex_unlock(&qeth_dbf_list_mutex);
6332}
6333
d3d1b205
JW		 6334static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6335{
6336 struct net_device *dev;
562cf773 6337 struct qeth_priv *priv;
d3d1b205
JW		 6338
6339 switch (card->info.type) {
6340 case QETH_CARD_TYPE_IQD:
562cf773 6341 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
d8564e19 6342 ether_setup, QETH_MAX_OUT_QUEUES, 1);
d3d1b205 6343 break;
73dc2daf 6344 case QETH_CARD_TYPE_OSM:
562cf773 6345 dev = alloc_etherdev(sizeof(*priv));
73dc2daf 6346 break;
d3d1b205 6347 default:
d8564e19 6348 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
d3d1b205
JW		 6349 }
6350
6351 if (!dev)
6352 return NULL;
6353
562cf773
JW		 6354 priv = netdev_priv(dev);
6355 priv->rx_copybreak = QETH_RX_COPYBREAK;
949bbf4d 6356 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
562cf773 6357
d3d1b205
JW		 6358 dev->ml_priv = card;
6359 dev->watchdog_timeo = QETH_TX_TIMEOUT;
a8c7629c 6360 dev->min_mtu = 576;
8ce7a9e0
JW		 6361 /* initialized when device first goes online: */
6362 dev->max_mtu = 0;
6363 dev->mtu = 0;
d3d1b205
JW		 6364 SET_NETDEV_DEV(dev, &card->gdev->dev);
6365 netif_carrier_off(dev);
5f89eca5 6366
a8c7629c
JW		 6367 dev->ethtool_ops = &qeth_ethtool_ops;
6368 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6369 dev->hw_features |= NETIF_F_SG;
6370 dev->vlan_features |= NETIF_F_SG;
6371 if (IS_IQD(card))
6372 dev->features |= NETIF_F_SG;
5f89eca5 6373
d3d1b205
JW		 6374 return dev;
6375}
6376
6377struct net_device *qeth_clone_netdev(struct net_device *orig)
6378{
6379 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6380
6381 if (!clone)
6382 return NULL;
6383
6384 clone->dev_port = orig->dev_port;
6385 return clone;
6386}
6387
4a71df50
FB		 6388static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6389{
6390 struct qeth_card *card;
6391 struct device *dev;
6392 int rc;
c70eb09d 6393 enum qeth_discipline_id enforced_disc;
819dc537 6394 char dbf_name[DBF_NAME_LEN];
4a71df50 6395
d11ba0c4 6396 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 6397
6398 dev = &gdev->dev;
6399 if (!get_device(dev))
6400 return -ENODEV;
6401
2a0217d5 6402 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 6403
121ca39a 6404 card = qeth_alloc_card(gdev);
4a71df50 6405 if (!card) {
d11ba0c4 6406 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 6407 rc = -ENOMEM;
6408 goto err_dev;
6409 }
af039068
CO		 6410
6411 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6412 dev_name(&gdev->dev));
819dc537 6413 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 6414 if (!card->debug) {
819dc537
SR		 6415 rc = qeth_add_dbf_entry(card, dbf_name);
6416 if (rc)
6417 goto err_card;
af039068 6418 }
af039068 6419
95f4d8b7 6420 qeth_setup_card(card);
d3d1b205 6421 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 6422 if (!card->dev) {
6423 rc = -ENOMEM;
d3d1b205 6424 goto err_card;
778b1ac7 6425 }
d3d1b205 6426
1c103cf8
JW		 6427 qeth_determine_capabilities(card);
6428 qeth_set_blkt_defaults(card);
6429
832585d2
JW		 6430 card->qdio.in_q = qeth_alloc_qdio_queue();
6431 if (!card->qdio.in_q) {
6432 rc = -ENOMEM;
6433 goto err_rx_queue;
6434 }
6435
73dc2daf
JW		 6436 card->qdio.no_out_queues = card->dev->num_tx_queues;
6437 rc = qeth_update_from_chp_desc(card);
6438 if (rc)
6439 goto err_chp_desc;
09ac887f 6440
a8c7629c 6441 gdev->dev.groups = qeth_dev_groups;
0b8da811 6442
c70eb09d
JW		 6443 enforced_disc = qeth_enforce_discipline(card);
6444 switch (enforced_disc) {
6445 case QETH_DISCIPLINE_UNDETERMINED:
6446 gdev->dev.type = &qeth_generic_devtype;
6447 break;
6448 default:
6449 card->info.layer_enforced = true;
b41b554c 6450 /* It's so early that we don't need the discipline_mutex yet. */
ea12f1b3 6451 rc = qeth_setup_discipline(card, enforced_disc);
5113fec0 6452 if (rc)
ea12f1b3 6453 goto err_setup_disc;
2d2ebb3e 6454
2d2ebb3e 6455 break;
4a71df50
FB		 6456 }
6457
4a71df50
FB		 6458 return 0;
6459
ea12f1b3 6460err_setup_disc:
a4cdc9ba 6461err_chp_desc:
832585d2
JW		 6462 qeth_free_qdio_queue(card->qdio.in_q);
6463err_rx_queue:
73dc2daf 6464 free_netdev(card->dev);
4a71df50
FB		 6465err_card:
6466 qeth_core_free_card(card);
6467err_dev:
6468 put_device(dev);
6469 return rc;
6470}
6471
6472static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6473{
4a71df50
FB		 6474 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6475
57a688aa 6476 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 6477
b41b554c 6478 mutex_lock(&card->discipline_mutex);
ea12f1b3
JW		 6479 if (card->discipline)
6480 qeth_remove_discipline(card);
b41b554c 6481 mutex_unlock(&card->discipline_mutex);
9dc48ccc 6482
8311c7a2
JW		 6483 qeth_free_qdio_queues(card);
6484
832585d2 6485 qeth_free_qdio_queue(card->qdio.in_q);
d3d1b205 6486 free_netdev(card->dev);
4a71df50 6487 qeth_core_free_card(card);
4a71df50 6488 put_device(&gdev->dev);
4a71df50
FB		 6489}
6490
6491static int qeth_core_set_online(struct ccwgroup_device *gdev)
6492{
6493 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6494 int rc = 0;
c70eb09d 6495 enum qeth_discipline_id def_discipline;
4a71df50 6496
b41b554c 6497 mutex_lock(&card->discipline_mutex);
c041f2d4 6498 if (!card->discipline) {
379ac99e
JW		 6499 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6500 QETH_DISCIPLINE_LAYER2;
ea12f1b3 6501 rc = qeth_setup_discipline(card, def_discipline);
4a71df50
FB		 6502 if (rc)
6503 goto err;
4a71df50 6504 }
91003f35 6505
0b9902c1 6506 rc = qeth_set_online(card, card->discipline);
0b9902c1 6507
4a71df50 6508err:
b41b554c 6509 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 6510 return rc;
6511}
6512
6513static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6514{
6515 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
0b9902c1 6516 int rc;
91003f35 6517
0b9902c1
JW		 6518 mutex_lock(&card->discipline_mutex);
6519 rc = qeth_set_offline(card, card->discipline, false);
6520 mutex_unlock(&card->discipline_mutex);
6521
6522 return rc;
4a71df50
FB		 6523}
6524
6525static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6526{
6527 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
378ac80d 6528
96d1bb53
JW		 6529 qeth_set_allowed_threads(card, 0, 1);
6530 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6531 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6532 qeth_qdio_clear_card(card, 0);
41c47da3 6533 qeth_drain_output_queues(card);
96d1bb53 6534 qdio_free(CARD_DDEV(card));
4a71df50
FB		 6535}
6536
36369569
GKH		 6537static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6538 size_t count)
4a71df50
FB		 6539{
6540 int err;
4a71df50 6541
6d8769ab
JW		 6542 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6543 buf);
b7169c51
SO		 6544
6545 return err ? err : count;
6546}
36369569 6547static DRIVER_ATTR_WO(group);
4a71df50 6548
f47e2256
SO		 6549static struct attribute *qeth_drv_attrs[] = {
6550 &driver_attr_group.attr,
6551 NULL,
6552};
6553static struct attribute_group qeth_drv_attr_group = {
6554 .attrs = qeth_drv_attrs,
6555};
6556static const struct attribute_group *qeth_drv_attr_groups[] = {
6557 &qeth_drv_attr_group,
6558 NULL,
6559};
6560
6d8769ab
JW		 6561static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6562 .driver = {
6563 .groups = qeth_drv_attr_groups,
6564 .owner = THIS_MODULE,
6565 .name = "qeth",
6566 },
6567 .ccw_driver = &qeth_ccw_driver,
6568 .setup = qeth_core_probe_device,
6569 .remove = qeth_core_remove_device,
6570 .set_online = qeth_core_set_online,
6571 .set_offline = qeth_core_set_offline,
6572 .shutdown = qeth_core_shutdown,
6d8769ab
JW		 6573};
6574
18787eee 6575int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
942d6984
JW		 6576{
6577 struct qeth_card *card = dev->ml_priv;
942d6984
JW		 6578 int rc = 0;
6579
942d6984
JW		 6580 switch (cmd) {
6581 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
18787eee 6582 rc = qeth_snmp_command(card, data);
942d6984
JW		 6583 break;
6584 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 6585 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6586 !IS_VM_NIC(card))
942d6984 6587 return 1;
379ac99e 6588 return 0;
18787eee
AB		 6589 case SIOC_QETH_QUERY_OAT:
6590 rc = qeth_query_oat_command(card, data);
6591 break;
6592 default:
2decb0b7 6593 rc = -EOPNOTSUPP;
18787eee
AB		 6594 }
6595 if (rc)
6596 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6597 return rc;
6598}
6599EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6600
6601int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6602{
6603 struct qeth_card *card = dev->ml_priv;
6604 struct mii_ioctl_data *mii_data;
6605 int rc = 0;
6606
6607 switch (cmd) {
942d6984
JW		 6608 case SIOCGMIIPHY:
6609 mii_data = if_mii(rq);
6610 mii_data->phy_id = 0;
6611 break;
6612 case SIOCGMIIREG:
6613 mii_data = if_mii(rq);
6614 if (mii_data->phy_id != 0)
6615 rc = -EINVAL;
6616 else
6617 mii_data->val_out = qeth_mdio_read(dev,
6618 mii_data->phy_id, mii_data->reg_num);
6619 break;
942d6984 6620 default:
18787eee 6621 return -EOPNOTSUPP;
942d6984
JW		 6622 }
6623 if (rc)
6624 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6625 return rc;
6626}
6627EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6628
4386e34f
JW		 6629static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6630 unsigned long data)
c9475369
TR		 6631{
6632 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 6633 u32 *features = reply->param;
c9475369 6634
ad3cbf61 6635 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6636 return -EIO;
c9475369 6637
4386e34f 6638 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 6639 return 0;
6640}
6641
4386e34f
JW		 6642static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6643 enum qeth_prot_versions prot)
c9475369 6644{
1c696c89
JW		 6645 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6646 NULL, prot);
c9475369
TR		 6647}
6648
4386e34f 6649static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
3be83016 6650 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6651{
571f9dd8 6652 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 6653 struct qeth_cmd_buffer *iob;
6654 struct qeth_ipa_caps caps;
6655 u32 features;
4d7def2a
TR		 6656 int rc;
6657
7e83747d
JW		 6658 /* some L3 HW requires combined L3+L4 csum offload: */
6659 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6660 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 6661 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 6662
4386e34f
JW		 6663 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6664 prot);
6665 if (!iob)
6666 return -ENOMEM;
6667
6668 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6669 if (rc)
4d7def2a 6670 return rc;
7e83747d 6671
4386e34f
JW		 6672 if ((required_features & features) != required_features) {
6673 qeth_set_csum_off(card, cstype, prot);
6674 return -EOPNOTSUPP;
6675 }
7e83747d 6676
b9150461
JW		 6677 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6678 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 6679 prot);
4386e34f
JW		 6680 if (!iob) {
6681 qeth_set_csum_off(card, cstype, prot);
6682 return -ENOMEM;
f9d8e6dc 6683 }
4386e34f
JW		 6684
6685 if (features & QETH_IPA_CHECKSUM_LP2LP)
6686 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6687 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6688 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6689 if (rc) {
4386e34f 6690 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6691 return rc;
6692 }
8f43fb00 6693
4386e34f
JW		 6694 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6695 !qeth_ipa_caps_enabled(&caps, required_features)) {
6696 qeth_set_csum_off(card, cstype, prot);
6697 return -EOPNOTSUPP;
6698 }
6699
a8155b00
KM		 6700 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6701 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
3be83016
JW		 6702
6703 if (lp2lp)
6704 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6705
4d7def2a
TR		 6706 return 0;
6707}
6708
a8155b00 6709static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
3be83016 6710 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6711{
3be83016 6712 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
742d4d40 6713 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6714}
4d7def2a 6715
4666d7fb
JW		 6716static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6717 unsigned long data)
6718{
6719 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6720 struct qeth_tso_start_data *tso_data = reply->param;
6721
6722 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6723 return -EIO;
4666d7fb
JW		 6724
6725 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6726 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6727 return 0;
6728}
6729
1f83b817
JW		 6730static int qeth_set_tso_off(struct qeth_card *card,
6731 enum qeth_prot_versions prot)
4d7def2a 6732{
1f83b817 6733 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6734 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6735}
4d7def2a 6736
1f83b817
JW		 6737static int qeth_set_tso_on(struct qeth_card *card,
6738 enum qeth_prot_versions prot)
6739{
4666d7fb
JW		 6740 struct qeth_tso_start_data tso_data;
6741 struct qeth_cmd_buffer *iob;
6742 struct qeth_ipa_caps caps;
6743 int rc;
6744
6745 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6746 IPA_CMD_ASS_START, 0, prot);
6747 if (!iob)
6748 return -ENOMEM;
6749
4fa55fa9 6750 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6751 if (rc)
6752 return rc;
6753
6754 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6755 qeth_set_tso_off(card, prot);
6756 return -EOPNOTSUPP;
6757 }
6758
6759 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6760 IPA_CMD_ASS_ENABLE,
6761 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6762 if (!iob) {
6763 qeth_set_tso_off(card, prot);
6764 return -ENOMEM;
6765 }
6766
6767 /* enable TSO capability */
4fa55fa9
JW		 6768 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6769 QETH_IPA_LARGE_SEND_TCP;
6770 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6771 if (rc) {
6772 qeth_set_tso_off(card, prot);
6773 return rc;
6774 }
6775
6776 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6777 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6778 qeth_set_tso_off(card, prot);
6779 return -EOPNOTSUPP;
6780 }
6781
6782 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6783 tso_data.mss);
6784 return 0;
1f83b817 6785}
4d7def2a 6786
1f83b817
JW		 6787static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6788 enum qeth_prot_versions prot)
6789{
742d4d40 6790 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6791}
8f43fb00 6792
d7e6ed97
KM		 6793static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6794{
6795 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6796 int rc_ipv6;
6797
6798 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6799 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6800 QETH_PROT_IPV4, NULL);
d7e6ed97
KM		 6801 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6802 /* no/one Offload Assist available, so the rc is trivial */
6803 return rc_ipv4;
ce344356 6804
d7e6ed97 6805 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6806 QETH_PROT_IPV6, NULL);
d7e6ed97
KM		 6807
6808 if (on)
6809 /* enable: success if any Assist is active */
6810 return (rc_ipv6) ? rc_ipv4 : 0;
6811
6812 /* disable: failure if any Assist is still active */
6813 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6814}
6815
ce344356 6816/**
d025da9e
JW		 6817 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6818 * @dev: a net_device
ce344356 6819 */
d025da9e 6820void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6821{
6822 struct qeth_card *card = dev->ml_priv;
d025da9e 6823 netdev_features_t features;
e830baa9 6824
d025da9e 6825 features = dev->features;
5fc692a7 6826 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6827 * netdev_update_features() will restart them.
6828 */
5fc692a7
JW		 6829 dev->features &= ~dev->hw_features;
6830 /* toggle VLAN filter, so that VIDs are re-programmed: */
6831 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6832 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6833 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6834 }
ce344356 6835 netdev_update_features(dev);
d025da9e
JW		 6836 if (features != dev->features)
6837 dev_warn(&card->gdev->dev,
6838 "Device recovery failed to restore all offload features\n");
e830baa9 6839}
d025da9e 6840EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6841
0d49c06b
JW		 6842static void qeth_check_restricted_features(struct qeth_card *card,
6843 netdev_features_t changed,
6844 netdev_features_t actual)
6845{
6846 netdev_features_t ipv6_features = NETIF_F_TSO6;
6847 netdev_features_t ipv4_features = NETIF_F_TSO;
6848
6849 if (!card->info.has_lp2lp_cso_v6)
6850 ipv6_features |= NETIF_F_IPV6_CSUM;
6851 if (!card->info.has_lp2lp_cso_v4)
6852 ipv4_features |= NETIF_F_IP_CSUM;
6853
6854 if ((changed & ipv6_features) && !(actual & ipv6_features))
6855 qeth_flush_local_addrs6(card);
6856 if ((changed & ipv4_features) && !(actual & ipv4_features))
6857 qeth_flush_local_addrs4(card);
6858}
6859
8f43fb00
TR		 6860int qeth_set_features(struct net_device *dev, netdev_features_t features)
6861{
6862 struct qeth_card *card = dev->ml_priv;
6c7cd712 6863 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6864 int rc = 0;
6865
57a688aa
JW		 6866 QETH_CARD_TEXT(card, 2, "setfeat");
6867 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6868
6c7cd712 6869 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00 6870 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
3be83016
JW		 6871 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6872 &card->info.has_lp2lp_cso_v4);
6c7cd712
HW		 6873 if (rc)
6874 changed ^= NETIF_F_IP_CSUM;
6875 }
571f9dd8
KM		 6876 if (changed & NETIF_F_IPV6_CSUM) {
6877 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
3be83016
JW		 6878 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6879 &card->info.has_lp2lp_cso_v6);
571f9dd8
KM		 6880 if (rc)
6881 changed ^= NETIF_F_IPV6_CSUM;
6882 }
d7e6ed97
KM		 6883 if (changed & NETIF_F_RXCSUM) {
6884 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6885 if (rc)
6886 changed ^= NETIF_F_RXCSUM;
6887 }
1f83b817
JW		 6888 if (changed & NETIF_F_TSO) {
6889 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6890 QETH_PROT_IPV4);
6c7cd712
HW		 6891 if (rc)
6892 changed ^= NETIF_F_TSO;
6893 }
82bf5c08
JW		 6894 if (changed & NETIF_F_TSO6) {
6895 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6896 QETH_PROT_IPV6);
6897 if (rc)
6898 changed ^= NETIF_F_TSO6;
6899 }
6c7cd712 6900
0d49c06b
JW		 6901 qeth_check_restricted_features(card, dev->features ^ features,
6902 dev->features ^ changed);
6903
6c7cd712
HW		 6904 /* everything changed successfully? */
6905 if ((dev->features ^ features) == changed)
6906 return 0;
6907 /* something went wrong. save changed features and return error */
6908 dev->features ^= changed;
6909 return -EIO;
8f43fb00
TR		 6910}
6911EXPORT_SYMBOL_GPL(qeth_set_features);
6912
6913netdev_features_t qeth_fix_features(struct net_device *dev,
6914 netdev_features_t features)
6915{
6916 struct qeth_card *card = dev->ml_priv;
6917
57a688aa 6918 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6919 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6920 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6921 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6922 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6923 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6924 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6925 features &= ~NETIF_F_RXCSUM;
cf536ffe 6926 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6927 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6928 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6929 features &= ~NETIF_F_TSO6;
e6e771b3 6930
57a688aa 6931 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6932 return features;
6933}
6934EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6935
6d69b1f1
JW		 6936netdev_features_t qeth_features_check(struct sk_buff *skb,
6937 struct net_device *dev,
6938 netdev_features_t features)
6939{
8cebedb6
JW		 6940 struct qeth_card *card = dev->ml_priv;
6941
c619e9a6 6942 /* Traffic with local next-hop is not eligible for some offloads: */
8cebedb6 6943 if (skb->ip_summed == CHECKSUM_PARTIAL &&
65878fd9 6944 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
c619e9a6
JW		 6945 netdev_features_t restricted = 0;
6946
6947 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6948 restricted |= NETIF_F_ALL_TSO;
6949
6950 switch (vlan_get_protocol(skb)) {
6951 case htons(ETH_P_IP):
6952 if (!card->info.has_lp2lp_cso_v4)
6953 restricted |= NETIF_F_IP_CSUM;
6954
6955 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6956 features &= ~restricted;
6957 break;
6958 case htons(ETH_P_IPV6):
6959 if (!card->info.has_lp2lp_cso_v6)
6960 restricted |= NETIF_F_IPV6_CSUM;
6961
6962 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6963 features &= ~restricted;
6964 break;
6965 default:
6966 break;
6967 }
6968 }
6969
6d69b1f1
JW		 6970 /* GSO segmentation builds skbs with
6971 * a (small) linear part for the headers, and
6972 * page frags for the data.
6973 * Compared to a linear skb, the header-only part consumes an
6974 * additional buffer element. This reduces buffer utilization, and
6975 * hurts throughput. So compress small segments into one element.
6976 */
6977 if (netif_needs_gso(skb, features)) {
6978 /* match skb_segment(): */
6979 unsigned int doffset = skb->data - skb_mac_header(skb);
6980 unsigned int hsize = skb_shinfo(skb)->gso_size;
6981 unsigned int hroom = skb_headroom(skb);
6982
6983 /* linearize only if resulting skb allocations are order-0: */
6984 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6985 features &= ~NETIF_F_SG;
6986 }
6987
6988 return vlan_features_check(skb, features);
6989}
6990EXPORT_SYMBOL_GPL(qeth_features_check);
6991
b0abc4f5
JW		 6992void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6993{
6994 struct qeth_card *card = dev->ml_priv;
6995 struct qeth_qdio_out_q *queue;
6996 unsigned int i;
6997
6998 QETH_CARD_TEXT(card, 5, "getstat");
6999
7000 stats->rx_packets = card->stats.rx_packets;
7001 stats->rx_bytes = card->stats.rx_bytes;
845ef904 7002 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 7003 card->stats.rx_frame_errors +
845ef904
JW		 7004 card->stats.rx_fifo_errors;
7005 stats->rx_dropped = card->stats.rx_dropped_nomem +
5b55633f
JW		 7006 card->stats.rx_dropped_notsupp +
7007 card->stats.rx_dropped_runt;
b0abc4f5 7008 stats->multicast = card->stats.rx_multicast;
845ef904 7009 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 7010 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 7011 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 7012
7013 for (i = 0; i < card->qdio.no_out_queues; i++) {
7014 queue = card->qdio.out_qs[i];
7015
7016 stats->tx_packets += queue->stats.tx_packets;
7017 stats->tx_bytes += queue->stats.tx_bytes;
7018 stats->tx_errors += queue->stats.tx_errors;
7019 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 7020 }
7021}
7022EXPORT_SYMBOL_GPL(qeth_get_stats64);
7023
5d8ce41c
JW		 7024#define TC_IQD_UCAST 0
7025static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7026 unsigned int ucast_txqs)
7027{
7028 unsigned int prio;
7029
7030 /* IQD requires mcast traffic to be placed on a dedicated queue, and
7031 * qeth_iqd_select_queue() deals with this.
7032 * For unicast traffic, we defer the queue selection to the stack.
7033 * By installing a trivial prio map that spans over only the unicast
7034 * queues, we can encourage the stack to spread the ucast traffic evenly
7035 * without selecting the mcast queue.
7036 */
7037
7038 /* One traffic class, spanning over all active ucast queues: */
7039 netdev_set_num_tc(dev, 1);
7040 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7041 QETH_IQD_MIN_UCAST_TXQ);
7042
7043 /* Map all priorities to this traffic class: */
7044 for (prio = 0; prio <= TC_BITMASK; prio++)
7045 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7046}
7047
7048int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7049{
7050 struct net_device *dev = card->dev;
7051 int rc;
7052
7053 /* Per netif_setup_tc(), adjust the mapping first: */
7054 if (IS_IQD(card))
7055 qeth_iqd_set_prio_tc_map(dev, count - 1);
7056
7057 rc = netif_set_real_num_tx_queues(dev, count);
7058
7059 if (rc && IS_IQD(card))
7060 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7061
7062 return rc;
7063}
bb5ab541 7064EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
5d8ce41c 7065
3a18d754
JW		 7066u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7067 u8 cast_type, struct net_device *sb_dev)
7068{
66cddf10
JW		 7069 u16 txq;
7070
3a18d754
JW		 7071 if (cast_type != RTN_UNICAST)
7072 return QETH_IQD_MCAST_TXQ;
5d8ce41c
JW		 7073 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7074 return QETH_IQD_MIN_UCAST_TXQ;
66cddf10
JW		 7075
7076 txq = netdev_pick_tx(dev, skb, sb_dev);
7077 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
3a18d754
JW		 7078}
7079EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7080
e6e771b3 7081int qeth_open(struct net_device *dev)
e22355ea
JW		 7082{
7083 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7084 struct qeth_qdio_out_q *queue;
7085 unsigned int i;
e22355ea
JW		 7086
7087 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea 7088
e22355ea 7089 card->data.state = CH_STATE_UP;
3a18d754 7090 netif_tx_start_all_queues(dev);
e22355ea 7091
e22355ea 7092 local_bh_disable();
7a4b92e8
JW		 7093 qeth_for_each_output_queue(card, queue, i) {
7094 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
7095 QETH_NAPI_WEIGHT);
7096 napi_enable(&queue->napi);
7097 napi_schedule(&queue->napi);
e53edf74 7098 }
3e83d467
JW		 7099
7100 napi_enable(&card->napi);
7101 napi_schedule(&card->napi);
e22355ea
JW		 7102 /* kick-start the NAPI softirq: */
7103 local_bh_enable();
3e83d467 7104
e22355ea
JW		 7105 return 0;
7106}
e22355ea
JW		 7107EXPORT_SYMBOL_GPL(qeth_open);
7108
7109int qeth_stop(struct net_device *dev)
7110{
7111 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7112 struct qeth_qdio_out_q *queue;
7113 unsigned int i;
e22355ea
JW		 7114
7115 QETH_CARD_TEXT(card, 4, "qethstop");
3e83d467
JW		 7116
7117 napi_disable(&card->napi);
7118 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7119 qdio_stop_irq(CARD_DDEV(card));
7120
7a4b92e8
JW		 7121 /* Quiesce the NAPI instances: */
7122 qeth_for_each_output_queue(card, queue, i)
7123 napi_disable(&queue->napi);
e53edf74 7124
7a4b92e8
JW		 7125 /* Stop .ndo_start_xmit, might still access queue->napi. */
7126 netif_tx_disable(dev);
e53edf74 7127
7a4b92e8
JW		 7128 qeth_for_each_output_queue(card, queue, i) {
7129 del_timer_sync(&queue->timer);
7130 /* Queues may get re-allocated, so remove the NAPIs. */
7131 netif_napi_del(&queue->napi);
e53edf74
JW		 7132 }
7133
e22355ea
JW		 7134 return 0;
7135}
7136EXPORT_SYMBOL_GPL(qeth_stop);
7137
4a71df50
FB		 7138static int __init qeth_core_init(void)
7139{
7140 int rc;
7141
74eacdb9 7142 pr_info("loading core functions\n");
4a71df50 7143
fb8d2580
JW		 7144 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7145
4a71df50
FB		 7146 rc = qeth_register_dbf_views();
7147 if (rc)
a936b1ef 7148 goto dbf_err;
035da16f 7149 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 7150 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 7151 if (rc)
7152 goto register_err;
55494264
JW		 7153 qeth_core_header_cache =
7154 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7155 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7156 0, NULL);
683d718a
FB		 7157 if (!qeth_core_header_cache) {
7158 rc = -ENOMEM;
7159 goto slab_err;
7160 }
0da9581d
EL		 7161 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7162 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7163 if (!qeth_qdio_outbuf_cache) {
7164 rc = -ENOMEM;
7165 goto cqslab_err;
7166 }
a18c28f0
JW		 7167
7168 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7169 sizeof(struct qaob),
7170 sizeof(struct qaob),
7171 0, NULL);
7172 if (!qeth_qaob_cache) {
7173 rc = -ENOMEM;
7174 goto qaob_err;
7175 }
7176
afb6ac59
SO		 7177 rc = ccw_driver_register(&qeth_ccw_driver);
7178 if (rc)
7179 goto ccw_err;
afb6ac59
SO		 7180 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7181 if (rc)
7182 goto ccwgroup_err;
0da9581d 7183
683d718a 7184 return 0;
afb6ac59
SO		 7185
7186ccwgroup_err:
7187 ccw_driver_unregister(&qeth_ccw_driver);
7188ccw_err:
a18c28f0
JW		 7189 kmem_cache_destroy(qeth_qaob_cache);
7190qaob_err:
afb6ac59 7191 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 7192cqslab_err:
7193 kmem_cache_destroy(qeth_core_header_cache);
683d718a 7194slab_err:
035da16f 7195 root_device_unregister(qeth_core_root_dev);
4a71df50 7196register_err:
4a71df50 7197 qeth_unregister_dbf_views();
a936b1ef 7198dbf_err:
fb8d2580 7199 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7200 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 7201 return rc;
7202}
7203
7204static void __exit qeth_core_exit(void)
7205{
819dc537 7206 qeth_clear_dbf_list();
4a71df50
FB		 7207 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7208 ccw_driver_unregister(&qeth_ccw_driver);
a18c28f0 7209 kmem_cache_destroy(qeth_qaob_cache);
0da9581d 7210 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 7211 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 7212 root_device_unregister(qeth_core_root_dev);
4a71df50 7213 qeth_unregister_dbf_views();
fb8d2580 7214 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7215 pr_info("core functions removed\n");
4a71df50
FB		 7216}
7217
7218module_init(qeth_core_init);
7219module_exit(qeth_core_exit);
7220MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7221MODULE_DESCRIPTION("qeth core functions");
7222MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)