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s390/zfcp: use new address translation helpers
[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;
a60bffe5
JW		 355
356 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 1, 0, 127);
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 428 ccw->count = len;
1bb7e8df 429 ccw->cda = (__u32)virt_to_phys(data);
45ca2fd6
JW		 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
7a07a29e
AW		 766static void qeth_default_link_info(struct qeth_card *card)
767{
768 struct qeth_link_info *link_info = &card->info.link_info;
769
770 QETH_CARD_TEXT(card, 2, "dftlinfo");
771 link_info->duplex = DUPLEX_FULL;
772
773 if (IS_IQD(card) || IS_VM_NIC(card)) {
774 link_info->speed = SPEED_10000;
775 link_info->port = PORT_FIBRE;
776 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
777 } else {
778 switch (card->info.link_type) {
779 case QETH_LINK_TYPE_FAST_ETH:
780 case QETH_LINK_TYPE_LANE_ETH100:
781 link_info->speed = SPEED_100;
782 link_info->port = PORT_TP;
783 break;
784 case QETH_LINK_TYPE_GBIT_ETH:
785 case QETH_LINK_TYPE_LANE_ETH1000:
786 link_info->speed = SPEED_1000;
787 link_info->port = PORT_FIBRE;
788 break;
789 case QETH_LINK_TYPE_10GBIT_ETH:
790 link_info->speed = SPEED_10000;
791 link_info->port = PORT_FIBRE;
792 break;
793 case QETH_LINK_TYPE_25GBIT_ETH:
794 link_info->speed = SPEED_25000;
795 link_info->port = PORT_FIBRE;
796 break;
797 default:
798 dev_info(&card->gdev->dev,
799 "Unknown link type %x\n",
800 card->info.link_type);
801 link_info->speed = SPEED_UNKNOWN;
802 link_info->port = PORT_OTHER;
803 }
804
805 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
806 }
807}
808
4a71df50 809static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
d19b93f4 810 struct qeth_ipa_cmd *cmd)
4a71df50 811{
847a50fd 812 QETH_CARD_TEXT(card, 5, "chkipad");
d19b93f4
JW		 813
814 if (IS_IPA_REPLY(cmd)) {
a8c7629c 815 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
d19b93f4
JW		 816 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
817 return cmd;
818 }
819
820 /* handle unsolicited event: */
821 switch (cmd->hdr.command) {
822 case IPA_CMD_STOPLAN:
823 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
824 dev_err(&card->gdev->dev,
ee909d0b 825 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
84c91482 826 netdev_name(card->dev));
ee909d0b
AW		 827 /* Set offline, then probably fail to set online: */
828 qeth_schedule_recovery(card);
4a71df50 829 } else {
ee909d0b 830 /* stay online for subsequent STARTLAN */
d19b93f4
JW		 831 dev_warn(&card->gdev->dev,
832 "The link for interface %s on CHPID 0x%X failed\n",
84c91482 833 netdev_name(card->dev), card->info.chpid);
d19b93f4 834 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
91cc98f5 835 netif_carrier_off(card->dev);
7a07a29e 836 qeth_default_link_info(card);
4a71df50 837 }
d19b93f4
JW		 838 return NULL;
839 case IPA_CMD_STARTLAN:
840 dev_info(&card->gdev->dev,
841 "The link for %s on CHPID 0x%X has been restored\n",
84c91482 842 netdev_name(card->dev), card->info.chpid);
d19b93f4
JW		 843 if (card->info.hwtrap)
844 card->info.hwtrap = 2;
845 qeth_schedule_recovery(card);
846 return NULL;
847 case IPA_CMD_SETBRIDGEPORT_IQD:
848 case IPA_CMD_SETBRIDGEPORT_OSA:
849 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
850 if (card->discipline->control_event_handler(card, cmd))
851 return cmd;
852 return NULL;
d19b93f4 853 case IPA_CMD_REGISTER_LOCAL_ADDR:
0d49c06b
JW		 854 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
855 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
856 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
857 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
858
d19b93f4
JW		 859 QETH_CARD_TEXT(card, 3, "irla");
860 return NULL;
861 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
0d49c06b
JW		 862 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
863 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
864 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
865 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
866
d19b93f4
JW		 867 QETH_CARD_TEXT(card, 3, "urla");
868 return NULL;
869 default:
870 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
871 return cmd;
4a71df50 872 }
4a71df50
FB		 873}
874
7fb7fe5c 875static void qeth_clear_ipacmd_list(struct qeth_card *card)
4a71df50 876{
308946b0 877 struct qeth_cmd_buffer *iob;
4a71df50
FB		 878 unsigned long flags;
879
847a50fd 880 QETH_CARD_TEXT(card, 4, "clipalst");
4a71df50
FB		 881
882 spin_lock_irqsave(&card->lock, flags);
04ea30c8 883 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
dbdd04d3 884 qeth_notify_cmd(iob, -ECANCELED);
4a71df50
FB		 885 spin_unlock_irqrestore(&card->lock, flags);
886}
4a71df50 887
5113fec0
UB		 888static int qeth_check_idx_response(struct qeth_card *card,
889 unsigned char *buffer)
4a71df50 890{
d11ba0c4 891 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
2e3d7fa5 892 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
e19e5be8 893 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
d857e111 894 buffer[4]);
847a50fd
CO		 895 QETH_CARD_TEXT(card, 2, "ckidxres");
896 QETH_CARD_TEXT(card, 2, " idxterm");
2e3d7fa5
JW		 897 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
898 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
899 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
5113fec0 900 dev_err(&card->gdev->dev,
2e3d7fa5
JW		 901 "The device does not support the configured transport mode\n");
902 return -EPROTONOSUPPORT;
5113fec0 903 }
4a71df50
FB		 904 return -EIO;
905 }
906 return 0;
907}
908
8f6637b8 909static void qeth_release_buffer_cb(struct qeth_card *card,
12fc286f
JW		 910 struct qeth_cmd_buffer *iob,
911 unsigned int data_length)
8f6637b8 912{
c3b2218d 913 qeth_put_cmd(iob);
8f6637b8
JW		 914}
915
54daaca7
JW		 916static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
917{
308946b0 918 qeth_notify_cmd(iob, rc);
c3b2218d 919 qeth_put_cmd(iob);
4a71df50 920}
4a71df50 921
a8c7629c
JW		 922static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
923 unsigned int length,
924 unsigned int ccws, long timeout)
40554895
JW		 925{
926 struct qeth_cmd_buffer *iob;
927
928 if (length > QETH_BUFSIZE)
929 return NULL;
930
931 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
932 if (!iob)
933 return NULL;
934
935 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
936 GFP_KERNEL | GFP_DMA);
937 if (!iob->data) {
938 kfree(iob);
939 return NULL;
940 }
941
308946b0
JW		 942 init_completion(&iob->done);
943 spin_lock_init(&iob->lock);
d9b9f40b 944 refcount_set(&iob->ref_count, 1);
40554895
JW		 945 iob->channel = channel;
946 iob->timeout = timeout;
947 iob->length = length;
948 return iob;
949}
950
988a747d 951static void qeth_issue_next_read_cb(struct qeth_card *card,
12fc286f
JW		 952 struct qeth_cmd_buffer *iob,
953 unsigned int data_length)
4a71df50 954{
308946b0 955 struct qeth_cmd_buffer *request = NULL;
d19b93f4 956 struct qeth_ipa_cmd *cmd = NULL;
0951c6ba 957 struct qeth_reply *reply = NULL;
308946b0 958 struct qeth_cmd_buffer *tmp;
4a71df50 959 unsigned long flags;
5113fec0 960 int rc = 0;
4a71df50 961
847a50fd 962 QETH_CARD_TEXT(card, 4, "sndctlcb");
5113fec0
UB		 963 rc = qeth_check_idx_response(card, iob->data);
964 switch (rc) {
965 case 0:
966 break;
967 case -EIO:
5113fec0 968 qeth_schedule_recovery(card);
df561f66 969 fallthrough;
5113fec0 970 default:
2e3d7fa5 971 qeth_clear_ipacmd_list(card);
3a5bad64 972 goto err_idx;
4a71df50
FB		 973 }
974
7f92316c
JW		 975 cmd = __ipa_reply(iob);
976 if (cmd) {
d19b93f4 977 cmd = qeth_check_ipa_data(card, cmd);
d782d80f
JW		 978 if (!cmd)
979 goto out;
4a71df50
FB		 980 }
981
0951c6ba 982 /* match against pending cmd requests */
4a71df50 983 spin_lock_irqsave(&card->lock, flags);
04ea30c8 984 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
7f92316c 985 if (tmp->match && tmp->match(tmp, iob)) {
308946b0 986 request = tmp;
0951c6ba 987 /* take the object outside the lock */
308946b0 988 qeth_get_cmd(request);
0951c6ba 989 break;
4a71df50
FB		 990 }
991 }
992 spin_unlock_irqrestore(&card->lock, flags);
0951c6ba 993
308946b0 994 if (!request)
0951c6ba
JW		 995 goto out;
996
308946b0 997 reply = &request->reply;
4b7ae122
JW		 998 if (!reply->callback) {
999 rc = 0;
072f7940
JW		 1000 goto no_callback;
1001 }
1002
308946b0
JW		 1003 spin_lock_irqsave(&request->lock, flags);
1004 if (request->rc)
072f7940 1005 /* Bail out when the requestor has already left: */
308946b0 1006 rc = request->rc;
7c5f8ffb
JW		 1007 else
1008 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
1009 (unsigned long)iob);
308946b0 1010 spin_unlock_irqrestore(&request->lock, flags);
0951c6ba 1011
072f7940 1012no_callback:
61e04465 1013 if (rc <= 0)
308946b0
JW		 1014 qeth_notify_cmd(request, rc);
1015 qeth_put_cmd(request);
4a71df50
FB		 1016out:
1017 memcpy(&card->seqno.pdu_hdr_ack,
1018 QETH_PDU_HEADER_SEQ_NO(iob->data),
1019 QETH_SEQ_NO_LENGTH);
7cbc9e8f 1020 __qeth_issue_next_read(card);
3a5bad64
JW		 1021err_idx:
1022 qeth_put_cmd(iob);
4a71df50
FB		 1023}
1024
4a71df50
FB		 1025static int qeth_set_thread_start_bit(struct qeth_card *card,
1026 unsigned long thread)
1027{
1028 unsigned long flags;
7005b754 1029 int rc = 0;
4a71df50
FB		 1030
1031 spin_lock_irqsave(&card->thread_mask_lock, flags);
7005b754
JW		 1032 if (!(card->thread_allowed_mask & thread))
1033 rc = -EPERM;
1034 else if (card->thread_start_mask & thread)
1035 rc = -EBUSY;
1036 else
1037 card->thread_start_mask |= thread;
4a71df50 1038 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
7005b754
JW		 1039
1040 return rc;
4a71df50
FB		 1041}
1042
91003f35
JW		 1043static void qeth_clear_thread_start_bit(struct qeth_card *card,
1044 unsigned long thread)
4a71df50
FB		 1045{
1046 unsigned long flags;
1047
1048 spin_lock_irqsave(&card->thread_mask_lock, flags);
1049 card->thread_start_mask &= ~thread;
1050 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1051 wake_up(&card->wait_q);
1052}
4a71df50 1053
91003f35
JW		 1054static void qeth_clear_thread_running_bit(struct qeth_card *card,
1055 unsigned long thread)
4a71df50
FB		 1056{
1057 unsigned long flags;
1058
1059 spin_lock_irqsave(&card->thread_mask_lock, flags);
1060 card->thread_running_mask &= ~thread;
1061 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1063e432 1062 wake_up_all(&card->wait_q);
4a71df50 1063}
4a71df50
FB		 1064
1065static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1066{
1067 unsigned long flags;
1068 int rc = 0;
1069
1070 spin_lock_irqsave(&card->thread_mask_lock, flags);
1071 if (card->thread_start_mask & thread) {
1072 if ((card->thread_allowed_mask & thread) &&
1073 !(card->thread_running_mask & thread)) {
1074 rc = 1;
1075 card->thread_start_mask &= ~thread;
1076 card->thread_running_mask |= thread;
1077 } else
1078 rc = -EPERM;
1079 }
1080 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1081 return rc;
1082}
1083
91003f35 1084static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
4a71df50
FB		 1085{
1086 int rc = 0;
1087
1088 wait_event(card->wait_q,
1089 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1090 return rc;
1091}
4a71df50 1092
7005b754 1093int qeth_schedule_recovery(struct qeth_card *card)
4a71df50 1094{
7005b754
JW		 1095 int rc;
1096
847a50fd 1097 QETH_CARD_TEXT(card, 2, "startrec");
7005b754
JW		 1098
1099 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1100 if (!rc)
4a71df50 1101 schedule_work(&card->kernel_thread_starter);
7005b754
JW		 1102
1103 return rc;
4a71df50 1104}
4a71df50 1105
8d908eb0
JW		 1106static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1107 struct irb *irb)
4a71df50
FB		 1108{
1109 int dstat, cstat;
1110 char *sense;
1111
1112 sense = (char *) irb->ecw;
23d805b6
PO		 1113 cstat = irb->scsw.cmd.cstat;
1114 dstat = irb->scsw.cmd.dstat;
4a71df50
FB		 1115
1116 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1117 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1118 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
847a50fd 1119 QETH_CARD_TEXT(card, 2, "CGENCHK");
74eacdb9
FB		 1120 dev_warn(&cdev->dev, "The qeth device driver "
1121 "failed to recover an error on the device\n");
e19e5be8
JW		 1122 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1123 CCW_DEVID(cdev), dstat, cstat);
4a71df50
FB		 1124 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1125 16, 1, irb, 64, 1);
2f3c269d 1126 return -EIO;
4a71df50
FB		 1127 }
1128
1129 if (dstat & DEV_STAT_UNIT_CHECK) {
1130 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1131 SENSE_RESETTING_EVENT_FLAG) {
847a50fd 1132 QETH_CARD_TEXT(card, 2, "REVIND");
2f3c269d 1133 return -EIO;
4a71df50
FB		 1134 }
1135 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1136 SENSE_COMMAND_REJECT_FLAG) {
847a50fd 1137 QETH_CARD_TEXT(card, 2, "CMDREJi");
2f3c269d 1138 return -EIO;
4a71df50
FB		 1139 }
1140 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
847a50fd 1141 QETH_CARD_TEXT(card, 2, "AFFE");
2f3c269d 1142 return -EIO;
4a71df50
FB		 1143 }
1144 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
847a50fd 1145 QETH_CARD_TEXT(card, 2, "ZEROSEN");
4a71df50
FB		 1146 return 0;
1147 }
847a50fd 1148 QETH_CARD_TEXT(card, 2, "DGENCHK");
378ac80d 1149 return -EIO;
4a71df50
FB		 1150 }
1151 return 0;
1152}
1153
54daaca7 1154static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
2066e1db 1155 struct irb *irb)
4a71df50 1156{
8d908eb0 1157 if (!IS_ERR(irb))
4a71df50
FB		 1158 return 0;
1159
1160 switch (PTR_ERR(irb)) {
1161 case -EIO:
e19e5be8
JW		 1162 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1163 CCW_DEVID(cdev));
847a50fd
CO		 1164 QETH_CARD_TEXT(card, 2, "ckirberr");
1165 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
54daaca7 1166 return -EIO;
4a71df50 1167 case -ETIMEDOUT:
74eacdb9
FB		 1168 dev_warn(&cdev->dev, "A hardware operation timed out"
1169 " on the device\n");
847a50fd
CO		 1170 QETH_CARD_TEXT(card, 2, "ckirberr");
1171 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
54daaca7 1172 return -ETIMEDOUT;
4a71df50 1173 default:
e19e5be8
JW		 1174 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1175 PTR_ERR(irb), CCW_DEVID(cdev));
847a50fd
CO		 1176 QETH_CARD_TEXT(card, 2, "ckirberr");
1177 QETH_CARD_TEXT(card, 2, " rc???");
54daaca7 1178 return PTR_ERR(irb);
4a71df50 1179 }
4a71df50
FB		 1180}
1181
1182static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1183 struct irb *irb)
1184{
1185 int rc;
1186 int cstat, dstat;
db71bbbd 1187 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1188 struct ccwgroup_device *gdev;
4a71df50
FB		 1189 struct qeth_channel *channel;
1190 struct qeth_card *card;
4a71df50 1191
8d908eb0
JW		 1192 /* while we hold the ccwdev lock, this stays valid: */
1193 gdev = dev_get_drvdata(&cdev->dev);
1194 card = dev_get_drvdata(&gdev->dev);
4a71df50 1195
847a50fd
CO		 1196 QETH_CARD_TEXT(card, 5, "irq");
1197
4a71df50
FB		 1198 if (card->read.ccwdev == cdev) {
1199 channel = &card->read;
847a50fd 1200 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1201 } else if (card->write.ccwdev == cdev) {
1202 channel = &card->write;
847a50fd 1203 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1204 } else {
1205 channel = &card->data;
847a50fd 1206 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1207 }
db71bbbd 1208
f9e50b02
JW		 1209 if (intparm == 0) {
1210 QETH_CARD_TEXT(card, 5, "irqunsol");
1211 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1212 QETH_CARD_TEXT(card, 5, "irqunexp");
1213
1214 dev_err(&cdev->dev,
1215 "Received IRQ with intparm %lx, expected %px\n",
1216 intparm, channel->active_cmd);
1217 if (channel->active_cmd)
1218 qeth_cancel_cmd(channel->active_cmd, -EIO);
1219 } else {
1220 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1221 }
1222
7359393f 1223 qeth_unlock_channel(card, channel);
db71bbbd 1224
2066e1db 1225 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1226 if (rc) {
db71bbbd
JW		 1227 /* IO was terminated, free its resources. */
1228 if (iob)
54daaca7 1229 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1230 return;
1231 }
1232
7359393f 1233 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
4a71df50 1234 channel->state = CH_STATE_STOPPED;
7359393f
JW		 1235 wake_up(&card->wait_q);
1236 }
4a71df50 1237
7359393f 1238 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
4a71df50 1239 channel->state = CH_STATE_HALTED;
7359393f
JW		 1240 wake_up(&card->wait_q);
1241 }
4a71df50 1242
f9e50b02
JW		 1243 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1244 SCSW_FCTL_HALT_FUNC))) {
1245 qeth_cancel_cmd(iob, -ECANCELED);
1246 iob = NULL;
4a71df50 1247 }
db71bbbd
JW		 1248
1249 cstat = irb->scsw.cmd.cstat;
1250 dstat = irb->scsw.cmd.dstat;
1251
4a71df50
FB		 1252 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1253 (dstat & DEV_STAT_UNIT_CHECK) ||
1254 (cstat)) {
1255 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1256 dev_warn(&channel->ccwdev->dev,
1257 "The qeth device driver failed to recover "
1258 "an error on the device\n");
e19e5be8
JW		 1259 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1260 CCW_DEVID(channel->ccwdev), cstat,
1261 dstat);
4a71df50
FB		 1262 print_hex_dump(KERN_WARNING, "qeth: irb ",
1263 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1264 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1265 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1266 }
2066e1db 1267
8d908eb0 1268 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1269 if (rc) {
a6c3d939 1270 card->read_or_write_problem = 1;
5065b2dd 1271 if (iob)
54daaca7 1272 qeth_cancel_cmd(iob, rc);
28a7e4c9 1273 qeth_clear_ipacmd_list(card);
4a71df50 1274 qeth_schedule_recovery(card);
7359393f 1275 return;
4a71df50
FB		 1276 }
1277 }
1278
12fc286f
JW		 1279 if (iob) {
1280 /* sanity check: */
1281 if (irb->scsw.cmd.count > iob->length) {
1282 qeth_cancel_cmd(iob, -EIO);
7359393f 1283 return;
12fc286f
JW		 1284 }
1285 if (iob->callback)
1286 iob->callback(card, iob,
1287 iob->length - irb->scsw.cmd.count);
1288 }
4a71df50
FB		 1289}
1290
b3332930 1291static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1292 struct qeth_qdio_out_buffer *buf,
b3332930 1293 enum iucv_tx_notify notification)
4a71df50 1294{
4a71df50
FB		 1295 struct sk_buff *skb;
1296
dc149e37 1297 skb_queue_walk(&buf->skb_list, skb) {
80bc97aa
JW		 1298 struct sock *sk = skb->sk;
1299
b3332930
FB		 1300 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1301 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
80bc97aa
JW		 1302 if (sk && sk->sk_family == PF_IUCV)
1303 iucv_sk(sk)->sk_txnotify(sk, notification);
b3332930 1304 }
b3332930
FB		 1305}
1306
6b7ec41e
JW		 1307static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1308 struct qeth_qdio_out_buffer *buf, bool error,
85e537d8 1309 int budget)
b3332930 1310{
104b4859
JW		 1311 struct sk_buff *skb;
1312
eeac0e20
JW		 1313 /* Empty buffer? */
1314 if (buf->next_element_to_fill == 0)
1315 return;
1316
1317 QETH_TXQ_STAT_INC(queue, bufs);
1318 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1ab2f8c6
JW		 1319 if (error) {
1320 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1321 } else {
1322 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1323 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1324 }
1325
eeac0e20
JW		 1326 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1327 unsigned int bytes = qdisc_pkt_len(skb);
1328 bool is_tso = skb_is_gso(skb);
1329 unsigned int packets;
1330
1331 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1ab2f8c6 1332 if (!error) {
eeac0e20
JW		 1333 if (skb->ip_summed == CHECKSUM_PARTIAL)
1334 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1335 if (skb_is_nonlinear(skb))
1336 QETH_TXQ_STAT_INC(queue, skbs_sg);
1337 if (is_tso) {
1338 QETH_TXQ_STAT_INC(queue, skbs_tso);
1339 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1340 }
1341 }
6a3123d0 1342
85e537d8 1343 napi_consume_skb(skb, budget);
eeac0e20 1344 }
b3332930
FB		 1345}
1346
1347static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1348 struct qeth_qdio_out_buffer *buf,
85e537d8 1349 bool error, int budget)
b3332930
FB		 1350{
1351 int i;
1352
1353 /* is PCI flag set on buffer? */
e872d0c1 1354 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
b3332930 1355 atomic_dec(&queue->set_pci_flags_count);
e872d0c1
JW		 1356 QETH_TXQ_STAT_INC(queue, completion_irq);
1357 }
b3332930 1358
6b7ec41e 1359 qeth_tx_complete_buf(queue, buf, error, budget);
3b346c18 1360
4e26c5fe 1361 for (i = 0; i < queue->max_elements; ++i) {
2db01da8
JW		 1362 void *data = phys_to_virt(buf->buffer->element[i].addr);
1363
bb7032dd 1364 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
2db01da8 1365 kmem_cache_free(qeth_core_header_cache, data);
4a71df50 1366 }
3b346c18 1367
4e26c5fe 1368 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1369 buf->next_element_to_fill = 0;
1ab2f8c6 1370 buf->frames = 0;
96bd6c94 1371 buf->bytes = 0;
3b346c18 1372 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1373}
1374
396c1004
JW		 1375static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1376{
1377 if (buf->aob)
a18c28f0 1378 kmem_cache_free(qeth_qaob_cache, buf->aob);
396c1004
JW		 1379 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1380}
1381
c20383ad
JW		 1382static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1383 struct qeth_qdio_out_q *queue,
ad4bbd72 1384 bool drain, int budget)
c20383ad
JW		 1385{
1386 struct qeth_qdio_out_buffer *buf, *tmp;
1387
1388 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
838e4cc8 1389 struct qeth_qaob_priv1 *priv;
f875d880
JW		 1390 struct qaob *aob = buf->aob;
1391 enum iucv_tx_notify notify;
1392 unsigned int i;
1393
838e4cc8
JW		 1394 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1395 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
c20383ad
JW		 1396 QETH_CARD_TEXT(card, 5, "fp");
1397 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1398
f875d880
JW		 1399 notify = drain ? TX_NOTIFY_GENERALERROR :
1400 qeth_compute_cq_notification(aob->aorc, 1);
1401 qeth_notify_skbs(queue, buf, notify);
6b7ec41e 1402 qeth_tx_complete_buf(queue, buf, drain, budget);
c20383ad 1403
f875d880
JW		 1404 for (i = 0;
1405 i < aob->sb_count && i < queue->max_elements;
1406 i++) {
9ff91a33 1407 void *data = dma64_to_virt(aob->sba[i]);
f875d880 1408
bb7032dd 1409 if (test_bit(i, buf->from_kmem_cache) && data)
f875d880
JW		 1410 kmem_cache_free(qeth_core_header_cache,
1411 data);
1412 }
1413
c20383ad 1414 list_del(&buf->list_entry);
396c1004 1415 qeth_free_out_buf(buf);
c20383ad
JW		 1416 }
1417 }
1418}
1419
41c47da3 1420static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1421{
1422 int j;
1423
ad4bbd72 1424 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
c20383ad 1425
0da9581d
EL		 1426 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1427 if (!q->bufs[j])
1428 continue;
c20383ad 1429
85e537d8 1430 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d 1431 if (free) {
396c1004 1432 qeth_free_out_buf(q->bufs[j]);
0da9581d
EL		 1433 q->bufs[j] = NULL;
1434 }
1435 }
4a71df50
FB		 1436}
1437
f2bcf9dd 1438static void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1439{
0da9581d 1440 int i;
4a71df50 1441
847a50fd 1442 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1443 /* clear outbound buffers to free skbs */
0da9581d 1444 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1445 if (card->qdio.out_qs[i])
1446 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1447 }
4a71df50 1448}
4a71df50 1449
bb5ab541 1450static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1451{
1c103cf8 1452 unsigned int max = single ? 1 : card->dev->num_tx_queues;
bd966839 1453
1c103cf8 1454 if (card->qdio.no_out_queues == max)
bb5ab541 1455 return;
725b9c04 1456
73dc2daf 1457 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1458 qeth_free_qdio_queues(card);
73dc2daf 1459
1c103cf8 1460 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
73dc2daf
JW		 1461 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1462
1c103cf8 1463 card->qdio.no_out_queues = max;
725b9c04
SO		 1464}
1465
a4cdc9ba 1466static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1467{
4a71df50 1468 struct ccw_device *ccwdev;
ded27d8d 1469 struct channel_path_desc_fmt0 *chp_dsc;
4a71df50 1470
57a688aa 1471 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1472
1473 ccwdev = card->data.ccwdev;
725b9c04
SO		 1474 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1475 if (!chp_dsc)
a4cdc9ba 1476 return -ENOMEM;
725b9c04
SO		 1477
1478 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1479
73dc2daf
JW		 1480 if (IS_OSD(card) || IS_OSX(card))
1481 /* CHPP field bit 6 == 1 -> single queue */
bb5ab541 1482 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1483
725b9c04 1484 kfree(chp_dsc);
57a688aa
JW		 1485 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1486 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bb5ab541 1487 return 0;
4a71df50
FB		 1488}
1489
1490static void qeth_init_qdio_info(struct qeth_card *card)
1491{
57a688aa 1492 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1493 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1494 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1495 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1496
4a71df50
FB		 1497 /* inbound */
1498 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1499 if (IS_IQD(card))
dcf4ae2d
FB		 1500 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1501 else
1502 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1503 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1504 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1505 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1506}
1507
95f4d8b7 1508static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1509{
1510 card->options.route4.type = NO_ROUTER;
1511 card->options.route6.type = NO_ROUTER;
d64ecc22 1512 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1513 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1514 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1515}
1516
1517static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1518{
1519 unsigned long flags;
1520 int rc = 0;
1521
1522 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1523 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1524 (u8) card->thread_start_mask,
1525 (u8) card->thread_allowed_mask,
1526 (u8) card->thread_running_mask);
1527 rc = (card->thread_start_mask & thread);
1528 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1529 return rc;
1530}
1531
91003f35 1532static int qeth_do_reset(void *data);
4a71df50
FB		 1533static void qeth_start_kernel_thread(struct work_struct *work)
1534{
3f36b890 1535 struct task_struct *ts;
4a71df50
FB		 1536 struct qeth_card *card = container_of(work, struct qeth_card,
1537 kernel_thread_starter);
378ac80d 1538 QETH_CARD_TEXT(card, 2, "strthrd");
4a71df50
FB		 1539
1540 if (card->read.state != CH_STATE_UP &&
1541 card->write.state != CH_STATE_UP)
1542 return;
3f36b890 1543 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
91003f35 1544 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
3f36b890
FB		 1545 if (IS_ERR(ts)) {
1546 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1547 qeth_clear_thread_running_bit(card,
1548 QETH_RECOVER_THREAD);
1549 }
1550 }
4a71df50
FB		 1551}
1552
bca51650 1553static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1554static void qeth_setup_card(struct qeth_card *card)
4a71df50 1555{
57a688aa 1556 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1557
95f4d8b7 1558 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1559 card->state = CARD_STATE_DOWN;
4a71df50 1560 spin_lock_init(&card->lock);
4a71df50 1561 spin_lock_init(&card->thread_mask_lock);
c4949f07 1562 mutex_init(&card->conf_mutex);
9dc48ccc 1563 mutex_init(&card->discipline_mutex);
4a71df50 1564 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1565 INIT_LIST_HEAD(&card->cmd_waiter_list);
1566 init_waitqueue_head(&card->wait_q);
95f4d8b7 1567 qeth_set_initial_options(card);
4a71df50
FB		 1568 /* IP address takeover */
1569 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1570 qeth_init_qdio_info(card);
b3332930 1571 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0973292f 1572 hash_init(card->rx_mode_addrs);
0d49c06b
JW		 1573 hash_init(card->local_addrs4);
1574 hash_init(card->local_addrs6);
1575 spin_lock_init(&card->local_addrs4_lock);
1576 spin_lock_init(&card->local_addrs6_lock);
4a71df50
FB		 1577}
1578
6bcac508
MS		 1579static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1580{
1581 struct qeth_card *card = container_of(slr, struct qeth_card,
1582 qeth_service_level);
0d788c7d
KDW		 1583 if (card->info.mcl_level[0])
1584 seq_printf(m, "qeth: %s firmware level %s\n",
1585 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1586}
1587
121ca39a 1588static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1589{
1590 struct qeth_card *card;
1591
d11ba0c4 1592 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1593 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1594 if (!card)
76b11f8e 1595 goto out;
d11ba0c4 1596 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1597
1598 card->gdev = gdev;
a2eb0ad5 1599 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1600 CARD_RDEV(card) = gdev->cdev[0];
1601 CARD_WDEV(card) = gdev->cdev[1];
1602 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1603
7686e4b6
JW		 1604 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1605 dev_name(&gdev->dev));
c0a2e4d1
JW		 1606 if (!card->event_wq)
1607 goto out_wq;
d9b9f40b
JW		 1608
1609 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1610 if (!card->read_cmd)
1611 goto out_read_cmd;
c3b2218d 1612
fb8d2580
JW		 1613 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1614 qeth_debugfs_root);
1615 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1616 &qeth_debugfs_local_addr_fops);
1617
6bcac508
MS		 1618 card->qeth_service_level.seq_print = qeth_core_sl_print;
1619 register_service_level(&card->qeth_service_level);
4a71df50 1620 return card;
76b11f8e 1621
d9b9f40b 1622out_read_cmd:
c0a2e4d1
JW		 1623 destroy_workqueue(card->event_wq);
1624out_wq:
a2eb0ad5 1625 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1626 kfree(card);
1627out:
1628 return NULL;
4a71df50
FB		 1629}
1630
8d908eb0
JW		 1631static int qeth_clear_channel(struct qeth_card *card,
1632 struct qeth_channel *channel)
4a71df50 1633{
4a71df50
FB		 1634 int rc;
1635
847a50fd 1636 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1637 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1638 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1639 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1640
1641 if (rc)
1642 return rc;
1643 rc = wait_event_interruptible_timeout(card->wait_q,
1644 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1645 if (rc == -ERESTARTSYS)
1646 return rc;
1647 if (channel->state != CH_STATE_STOPPED)
1648 return -ETIME;
1649 channel->state = CH_STATE_DOWN;
1650 return 0;
1651}
1652
8d908eb0
JW		 1653static int qeth_halt_channel(struct qeth_card *card,
1654 struct qeth_channel *channel)
4a71df50 1655{
4a71df50
FB		 1656 int rc;
1657
847a50fd 1658 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1659 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1660 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1661 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1662
1663 if (rc)
1664 return rc;
1665 rc = wait_event_interruptible_timeout(card->wait_q,
1666 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1667 if (rc == -ERESTARTSYS)
1668 return rc;
1669 if (channel->state != CH_STATE_HALTED)
1670 return -ETIME;
1671 return 0;
1672}
1673
b7ea041b 1674static int qeth_stop_channel(struct qeth_channel *channel)
f9e50b02
JW		 1675{
1676 struct ccw_device *cdev = channel->ccwdev;
1677 int rc;
1678
1679 rc = ccw_device_set_offline(cdev);
1680
1681 spin_lock_irq(get_ccwdev_lock(cdev));
3518ae76 1682 if (channel->active_cmd)
f9e50b02
JW		 1683 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1684 channel->active_cmd);
3518ae76 1685
871602b1 1686 cdev->handler = NULL;
f9e50b02
JW		 1687 spin_unlock_irq(get_ccwdev_lock(cdev));
1688
1689 return rc;
1690}
f9e50b02 1691
871602b1
JW		 1692static int qeth_start_channel(struct qeth_channel *channel)
1693{
1694 struct ccw_device *cdev = channel->ccwdev;
1695 int rc;
1696
1697 channel->state = CH_STATE_DOWN;
3518ae76 1698 xchg(&channel->active_cmd, NULL);
871602b1
JW		 1699
1700 spin_lock_irq(get_ccwdev_lock(cdev));
1701 cdev->handler = qeth_irq;
1702 spin_unlock_irq(get_ccwdev_lock(cdev));
1703
1704 rc = ccw_device_set_online(cdev);
1705 if (rc)
1706 goto err;
1707
1708 return 0;
1709
1710err:
1711 spin_lock_irq(get_ccwdev_lock(cdev));
1712 cdev->handler = NULL;
1713 spin_unlock_irq(get_ccwdev_lock(cdev));
1714 return rc;
1715}
1716
4a71df50
FB		 1717static int qeth_halt_channels(struct qeth_card *card)
1718{
1719 int rc1 = 0, rc2 = 0, rc3 = 0;
1720
847a50fd 1721 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1722 rc1 = qeth_halt_channel(card, &card->read);
1723 rc2 = qeth_halt_channel(card, &card->write);
1724 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1725 if (rc1)
1726 return rc1;
1727 if (rc2)
1728 return rc2;
1729 return rc3;
1730}
1731
1732static int qeth_clear_channels(struct qeth_card *card)
1733{
1734 int rc1 = 0, rc2 = 0, rc3 = 0;
1735
847a50fd 1736 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1737 rc1 = qeth_clear_channel(card, &card->read);
1738 rc2 = qeth_clear_channel(card, &card->write);
1739 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1740 if (rc1)
1741 return rc1;
1742 if (rc2)
1743 return rc2;
1744 return rc3;
1745}
1746
1747static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1748{
1749 int rc = 0;
1750
847a50fd 1751 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1752
1753 if (halt)
1754 rc = qeth_halt_channels(card);
1755 if (rc)
1756 return rc;
1757 return qeth_clear_channels(card);
1758}
1759
f2bcf9dd 1760static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
4a71df50
FB		 1761{
1762 int rc = 0;
1763
847a50fd 1764 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1765 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1766 QETH_QDIO_CLEANING)) {
1767 case QETH_QDIO_ESTABLISHED:
379ac99e 1768 if (IS_IQD(card))
cc961d40 1769 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1770 QDIO_FLAG_CLEANUP_USING_HALT);
1771 else
cc961d40 1772 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1773 QDIO_FLAG_CLEANUP_USING_CLEAR);
1774 if (rc)
847a50fd 1775 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1776 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1777 break;
1778 case QETH_QDIO_CLEANING:
1779 return rc;
1780 default:
1781 break;
1782 }
1783 rc = qeth_clear_halt_card(card, use_halt);
1784 if (rc)
847a50fd 1785 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1786 return rc;
1787}
4a71df50 1788
615dff22
JW		 1789static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1790{
1791 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1792 struct diag26c_vnic_resp *response = NULL;
1793 struct diag26c_vnic_req *request = NULL;
1794 struct ccw_dev_id id;
1795 char userid[80];
1796 int rc = 0;
1797
57a688aa 1798 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1799
1800 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1801 if (rc)
1802 goto out;
1803
1804 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1805 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1806 if (!request || !response) {
1807 rc = -ENOMEM;
1808 goto out;
1809 }
1810
1811 ccw_device_get_id(CARD_RDEV(card), &id);
1812 request->resp_buf_len = sizeof(*response);
1813 request->resp_version = DIAG26C_VERSION6_VM65918;
1814 request->req_format = DIAG26C_VNIC_INFO;
1815 ASCEBC(userid, 8);
1816 memcpy(&request->sys_name, userid, 8);
1817 request->devno = id.devno;
1818
1819 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1820 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1821 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1822 if (rc)
1823 goto out;
1824 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1825
1826 if (request->resp_buf_len < sizeof(*response) ||
1827 response->version != request->resp_version) {
1828 rc = -EIO;
1829 goto out;
1830 }
1831
1832 if (response->protocol == VNIC_INFO_PROT_L2)
1833 disc = QETH_DISCIPLINE_LAYER2;
1834 else if (response->protocol == VNIC_INFO_PROT_L3)
1835 disc = QETH_DISCIPLINE_LAYER3;
1836
1837out:
1838 kfree(response);
1839 kfree(request);
1840 if (rc)
57a688aa 1841 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1842 return disc;
1843}
1844
c70eb09d
JW		 1845/* Determine whether the device requires a specific layer discipline */
1846static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1847{
615dff22
JW		 1848 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1849
a8c7629c 1850 if (IS_OSM(card))
615dff22 1851 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1852 else if (IS_VM_NIC(card))
1853 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1854 qeth_vm_detect_layer(card);
615dff22
JW		 1855
1856 switch (disc) {
1857 case QETH_DISCIPLINE_LAYER2:
57a688aa 1858 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1859 break;
1860 case QETH_DISCIPLINE_LAYER3:
57a688aa 1861 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1862 break;
1863 default:
57a688aa 1864 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1865 }
1866
615dff22 1867 return disc;
c70eb09d
JW		 1868}
1869
09ac887f 1870static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1871{
57a688aa 1872 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1873
09ac887f 1874 if (card->info.use_v1_blkt) {
a60389ab
EL		 1875 card->info.blkt.time_total = 0;
1876 card->info.blkt.inter_packet = 0;
1877 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1878 } else {
1879 card->info.blkt.time_total = 250;
1880 card->info.blkt.inter_packet = 5;
1881 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1882 }
4a71df50
FB		 1883}
1884
7f23d55f 1885static void qeth_idx_init(struct qeth_card *card)
4a71df50 1886{
7f23d55f
JW		 1887 memset(&card->seqno, 0, sizeof(card->seqno));
1888
4a71df50
FB		 1889 card->token.issuer_rm_w = 0x00010103UL;
1890 card->token.cm_filter_w = 0x00010108UL;
1891 card->token.cm_connection_w = 0x0001010aUL;
1892 card->token.ulp_filter_w = 0x0001010bUL;
1893 card->token.ulp_connection_w = 0x0001010dUL;
4a71df50 1894
5113fec0
UB		 1895 switch (card->info.type) {
1896 case QETH_CARD_TYPE_IQD:
6298263a 1897 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1898 break;
1899 case QETH_CARD_TYPE_OSD:
1900 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1901 break;
1902 default:
1903 break;
4a71df50
FB		 1904 }
1905}
1906
48ce6f89 1907static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1908 struct qeth_cmd_buffer *iob)
48ce6f89 1909{
48ce6f89
JW		 1910 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1911 QETH_SEQ_NO_LENGTH);
1912 if (iob->channel == &card->write)
1913 card->seqno.trans_hdr++;
1914}
1915
4a71df50
FB		 1916static int qeth_peer_func_level(int level)
1917{
1918 if ((level & 0xff) == 8)
1919 return (level & 0xff) + 0x400;
1920 if (((level >> 8) & 3) == 1)
1921 return (level & 0xff) + 0x200;
1922 return level;
1923}
1924
48ce6f89 1925static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1926 struct qeth_cmd_buffer *iob)
4a71df50 1927{
c3b2218d 1928 qeth_idx_finalize_cmd(card, iob);
4a71df50 1929
4a71df50
FB		 1930 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1931 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1932 card->seqno.pdu_hdr++;
1933 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1934 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1935
48ce6f89 1936 iob->callback = qeth_release_buffer_cb;
4a71df50 1937}
4a71df50 1938
7f92316c
JW		 1939static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1940 struct qeth_cmd_buffer *reply)
1941{
1942 /* MPC cmds are issued strictly in sequence. */
1943 return !IS_IPA(reply->data);
1944}
1945
f19f8fd2 1946static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
94ae20f7 1947 const void *data,
f19f8fd2 1948 unsigned int data_length)
1273a800
JW		 1949{
1950 struct qeth_cmd_buffer *iob;
1951
f19f8fd2
JW		 1952 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1953 if (!iob)
1954 return NULL;
1955
1956 memcpy(iob->data, data, data_length);
1957 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1958 iob->data);
1959 iob->finalize = qeth_mpc_finalize_cmd;
7f92316c 1960 iob->match = qeth_mpc_match_reply;
1273a800
JW		 1961 return iob;
1962}
1963
efbbc1d5
EC		 1964/**
1965 * qeth_send_control_data() - send control command to the card
1966 * @card: qeth_card structure pointer
efbbc1d5
EC		 1967 * @iob: qeth_cmd_buffer pointer
1968 * @reply_cb: callback function pointer
7ffaef82
HC		 1969 * cb_card: pointer to the qeth_card structure
1970 * cb_reply: pointer to the qeth_reply structure
1971 * cb_cmd: pointer to the original iob for non-IPA
efbbc1d5
EC		 1972 * commands, or to the qeth_ipa_cmd structure
1973 * for the IPA commands.
1974 * @reply_param: private pointer passed to the callback
1975 *
efbbc1d5
EC		 1976 * Callback function gets called one or more times, with cb_cmd
1977 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 1978 * function must return
1979 * > 0 if more reply blocks are expected,
1980 * 0 if the last or only reply block is received, and
1981 * < 0 on error.
1982 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 1983 * field 'param' of the structure qeth_reply.
1984 */
1985
c3b2218d 1986static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 1987 struct qeth_cmd_buffer *iob,
1988 int (*reply_cb)(struct qeth_card *cb_card,
1989 struct qeth_reply *cb_reply,
1990 unsigned long cb_cmd),
1991 void *reply_param)
4a71df50 1992{
750b1625 1993 struct qeth_channel *channel = iob->channel;
308946b0 1994 struct qeth_reply *reply = &iob->reply;
782e4a79 1995 long timeout = iob->timeout;
4a71df50 1996 int rc;
4a71df50 1997
847a50fd 1998 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 1999
4a71df50
FB		 2000 reply->callback = reply_cb;
2001 reply->param = reply_param;
d22ffb5a 2002
782e4a79 2003 timeout = wait_event_interruptible_timeout(card->wait_q,
3518ae76 2004 qeth_trylock_channel(channel, iob),
782e4a79
JW		 2005 timeout);
2006 if (timeout <= 0) {
c3b2218d 2007 qeth_put_cmd(iob);
782e4a79
JW		 2008 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2009 }
4a71df50 2010
2066e1db 2011 if (iob->finalize)
c3b2218d
JW		 2012 iob->finalize(card, iob);
2013 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 2014
308946b0 2015 qeth_enqueue_cmd(card, iob);
1c5b2216 2016
32e85a0d
JW		 2017 /* This pairs with iob->callback, and keeps the iob alive after IO: */
2018 qeth_get_cmd(iob);
2019
847a50fd 2020 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 2021 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 2022 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 2023 (addr_t) iob, 0, 0, timeout);
ed47155b 2024 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 2025 if (rc) {
e19e5be8
JW		 2026 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2027 CARD_DEVID(card), rc);
847a50fd 2028 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 2029 qeth_dequeue_cmd(card, iob);
c3b2218d 2030 qeth_put_cmd(iob);
7359393f 2031 qeth_unlock_channel(card, channel);
32e85a0d 2032 goto out;
4a71df50 2033 }
5b54e16f 2034
308946b0 2035 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 2036 timeout);
2037 if (timeout <= 0)
2038 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 2039
308946b0 2040 qeth_dequeue_cmd(card, iob);
072f7940
JW		 2041
2042 if (reply_cb) {
2043 /* Wait until the callback for a late reply has completed: */
308946b0 2044 spin_lock_irq(&iob->lock);
072f7940
JW		 2045 if (rc)
2046 /* Zap any callback that's still pending: */
308946b0
JW		 2047 iob->rc = rc;
2048 spin_unlock_irq(&iob->lock);
072f7940
JW		 2049 }
2050
782e4a79 2051 if (!rc)
308946b0 2052 rc = iob->rc;
32e85a0d
JW		 2053
2054out:
32e85a0d 2055 qeth_put_cmd(iob);
5b54e16f 2056 return rc;
4a71df50 2057}
4a71df50 2058
afc1f67b
JW		 2059struct qeth_node_desc {
2060 struct node_descriptor nd1;
2061 struct node_descriptor nd2;
2062 struct node_descriptor nd3;
2063};
2064
2066e1db 2065static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 2066 struct qeth_cmd_buffer *iob,
2067 unsigned int data_length)
2066e1db 2068{
afc1f67b 2069 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 2070 int rc = 0;
afc1f67b 2071 u8 *tag;
2066e1db
JW		 2072
2073 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 2074
2075 if (data_length < sizeof(*nd)) {
2076 rc = -EINVAL;
2077 goto out;
2078 }
2079
afc1f67b
JW		 2080 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2081 nd->nd1.plant[1] == _ascebc['M'];
2082 tag = (u8 *)&nd->nd1.tag;
2083 card->info.chpid = tag[0];
2084 card->info.unit_addr2 = tag[1];
2085
2086 tag = (u8 *)&nd->nd2.tag;
2087 card->info.cula = tag[1];
2088
2089 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2090 nd->nd3.model[1] == 0xF0 &&
2091 nd->nd3.model[2] >= 0xF1 &&
2092 nd->nd3.model[2] <= 0xF4;
2066e1db 2093
12fc286f 2094out:
308946b0 2095 qeth_notify_cmd(iob, rc);
c3b2218d 2096 qeth_put_cmd(iob);
2066e1db
JW		 2097}
2098
2099static int qeth_read_conf_data(struct qeth_card *card)
2100{
2101 struct qeth_channel *channel = &card->data;
2102 struct qeth_cmd_buffer *iob;
2103 struct ciw *ciw;
2104
2105 /* scan for RCD command in extended SenseID data */
2106 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2107 if (!ciw || ciw->cmd == 0)
2108 return -EOPNOTSUPP;
afc1f67b
JW		 2109 if (ciw->count < sizeof(struct qeth_node_desc))
2110 return -EINVAL;
2066e1db
JW		 2111
2112 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2113 if (!iob)
2114 return -ENOMEM;
2115
2116 iob->callback = qeth_read_conf_data_cb;
2117 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2118 iob->data);
2119
c3b2218d 2120 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 2121}
2122
2e873d10
JW		 2123static int qeth_idx_check_activate_response(struct qeth_card *card,
2124 struct qeth_channel *channel,
2125 struct qeth_cmd_buffer *iob)
2126{
2127 int rc;
2128
2129 rc = qeth_check_idx_response(card, iob->data);
2130 if (rc)
2131 return rc;
2132
2133 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2134 return 0;
2135
2136 /* negative reply: */
57a688aa
JW		 2137 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2138 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 2139
2140 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2141 case QETH_IDX_ACT_ERR_EXCL:
2142 dev_err(&channel->ccwdev->dev,
2143 "The adapter is used exclusively by another host\n");
2144 return -EBUSY;
2145 case QETH_IDX_ACT_ERR_AUTH:
2146 case QETH_IDX_ACT_ERR_AUTH_USER:
2147 dev_err(&channel->ccwdev->dev,
2148 "Setting the device online failed because of insufficient authorization\n");
2149 return -EPERM;
2150 default:
2151 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2152 CCW_DEVID(channel->ccwdev));
2153 return -EIO;
2154 }
2155}
2156
f3b783b1 2157static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
12fc286f
JW		 2158 struct qeth_cmd_buffer *iob,
2159 unsigned int data_length)
2e873d10 2160{
fcda7f73 2161 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2162 u16 peer_level;
2163 int rc;
2164
57a688aa 2165 QETH_CARD_TEXT(card, 2, "idxrdcb");
2e873d10
JW		 2166
2167 rc = qeth_idx_check_activate_response(card, channel, iob);
2168 if (rc)
2169 goto out;
2170
2171 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2172 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2173 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2174 CCW_DEVID(channel->ccwdev),
2175 card->info.func_level, peer_level);
2176 rc = -EINVAL;
2177 goto out;
2178 }
2179
2180 memcpy(&card->token.issuer_rm_r,
2181 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2182 QETH_MPC_TOKEN_LENGTH);
2183 memcpy(&card->info.mcl_level[0],
2184 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2185
2186out:
308946b0 2187 qeth_notify_cmd(iob, rc);
c3b2218d 2188 qeth_put_cmd(iob);
2e873d10
JW		 2189}
2190
f3b783b1 2191static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 2192 struct qeth_cmd_buffer *iob,
2193 unsigned int data_length)
2e873d10 2194{
fcda7f73 2195 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2196 u16 peer_level;
2197 int rc;
2198
57a688aa 2199 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 2200
2201 rc = qeth_idx_check_activate_response(card, channel, iob);
2202 if (rc)
2203 goto out;
2204
2205 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2206 if ((peer_level & ~0x0100) !=
2207 qeth_peer_func_level(card->info.func_level)) {
2208 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2209 CCW_DEVID(channel->ccwdev),
2210 card->info.func_level, peer_level);
2211 rc = -EINVAL;
2212 }
2213
2214out:
308946b0 2215 qeth_notify_cmd(iob, rc);
c3b2218d 2216 qeth_put_cmd(iob);
2e873d10
JW		 2217}
2218
2e873d10
JW		 2219static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2220 struct qeth_cmd_buffer *iob)
2221{
2222 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2223 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 2224 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10 2225
f3b783b1
JW		 2226 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2227 iob->data);
2228 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10 2229 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 2230
5fd3fcbb 2231 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 2232 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2233 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2234 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2235 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2236 &card->info.func_level, 2);
fa115adf 2237 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2e873d10
JW		 2238 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2239}
2240
2241static int qeth_idx_activate_read_channel(struct qeth_card *card)
2242{
2243 struct qeth_channel *channel = &card->read;
2244 struct qeth_cmd_buffer *iob;
2245 int rc;
2246
57a688aa 2247 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2248
f3b783b1 2249 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2250 if (!iob)
2251 return -ENOMEM;
2252
2253 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2254 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2255 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 2256
c3b2218d 2257 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2258 if (rc)
2259 return rc;
2260
2e873d10
JW		 2261 channel->state = CH_STATE_UP;
2262 return 0;
2263}
2264
2265static int qeth_idx_activate_write_channel(struct qeth_card *card)
2266{
2267 struct qeth_channel *channel = &card->write;
2268 struct qeth_cmd_buffer *iob;
2269 int rc;
2270
57a688aa 2271 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2272
f3b783b1 2273 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2274 if (!iob)
2275 return -ENOMEM;
2276
2277 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2278 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2279 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2280
c3b2218d 2281 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2282 if (rc)
2283 return rc;
2284
2e873d10
JW		 2285 channel->state = CH_STATE_UP;
2286 return 0;
2287}
2288
4a71df50
FB		 2289static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2290 unsigned long data)
2291{
2292 struct qeth_cmd_buffer *iob;
2293
57a688aa 2294 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2295
2296 iob = (struct qeth_cmd_buffer *) data;
2297 memcpy(&card->token.cm_filter_r,
2298 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2299 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2300 return 0;
2301}
2302
2303static int qeth_cm_enable(struct qeth_card *card)
2304{
4a71df50
FB		 2305 struct qeth_cmd_buffer *iob;
2306
57a688aa 2307 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2308
f19f8fd2 2309 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2310 if (!iob)
2311 return -ENOMEM;
48ce6f89 2312
4a71df50
FB		 2313 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2314 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2315 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2316 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2317
c3b2218d 2318 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2319}
2320
2321static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2322 unsigned long data)
2323{
4a71df50
FB		 2324 struct qeth_cmd_buffer *iob;
2325
57a688aa 2326 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2327
2328 iob = (struct qeth_cmd_buffer *) data;
2329 memcpy(&card->token.cm_connection_r,
2330 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2331 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2332 return 0;
2333}
2334
2335static int qeth_cm_setup(struct qeth_card *card)
2336{
4a71df50
FB		 2337 struct qeth_cmd_buffer *iob;
2338
57a688aa 2339 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2340
f19f8fd2 2341 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2342 if (!iob)
2343 return -ENOMEM;
48ce6f89 2344
4a71df50
FB		 2345 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2346 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2347 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2348 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2349 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2350 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2351 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2352}
2353
101e314d
JW		 2354static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2355{
2356 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2357 link_type == QETH_LINK_TYPE_HSTR) {
2358 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2359 return false;
2360 }
2361
2362 return true;
2363}
2364
8ce7a9e0 2365static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2366{
8ce7a9e0
JW		 2367 struct net_device *dev = card->dev;
2368 unsigned int new_mtu;
2369
2370 if (!max_mtu) {
2371 /* IQD needs accurate max MTU to set up its RX buffers: */
2372 if (IS_IQD(card))
2373 return -EINVAL;
2374 /* tolerate quirky HW: */
2375 max_mtu = ETH_MAX_MTU;
2376 }
2377
2378 rtnl_lock();
2379 if (IS_IQD(card)) {
2380 /* move any device with default MTU to new max MTU: */
2381 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2382
2383 /* adjust RX buffer size to new max MTU: */
2384 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2385 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2386 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2387 } else {
2388 if (dev->mtu)
2389 new_mtu = dev->mtu;
2390 /* default MTUs for first setup: */
4fda3354 2391 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2392 new_mtu = ETH_DATA_LEN;
2393 else
2394 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2395 }
8ce7a9e0
JW		 2396
2397 dev->max_mtu = max_mtu;
2398 dev->mtu = min(new_mtu, max_mtu);
2399 rtnl_unlock();
2400 return 0;
4a71df50
FB		 2401}
2402
cef6ff22 2403static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2404{
2405 switch (framesize) {
2406 case 0x4000:
2407 return 8192;
2408 case 0x6000:
2409 return 16384;
2410 case 0xa000:
2411 return 32768;
2412 case 0xffff:
2413 return 57344;
2414 default:
2415 return 0;
2416 }
2417}
2418
4a71df50
FB		 2419static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2420 unsigned long data)
2421{
4a71df50
FB		 2422 __u16 mtu, framesize;
2423 __u16 len;
4a71df50 2424 struct qeth_cmd_buffer *iob;
101e314d 2425 u8 link_type = 0;
4a71df50 2426
57a688aa 2427 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2428
2429 iob = (struct qeth_cmd_buffer *) data;
2430 memcpy(&card->token.ulp_filter_r,
2431 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2432 QETH_MPC_TOKEN_LENGTH);
379ac99e 2433 if (IS_IQD(card)) {
4a71df50
FB		 2434 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2435 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2436 } else {
8ce7a9e0 2437 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2438 }
8ce7a9e0 2439 *(u16 *)reply->param = mtu;
4a71df50
FB		 2440
2441 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2442 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2443 memcpy(&link_type,
2444 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
101e314d
JW		 2445 if (!qeth_is_supported_link_type(card, link_type))
2446 return -EPROTONOSUPPORT;
2447 }
2448
2449 card->info.link_type = link_type;
57a688aa 2450 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2451 return 0;
2452}
2453
73657a3e
JW		 2454static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2455{
a37cfa28 2456 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
73657a3e
JW		 2457}
2458
4a71df50
FB		 2459static int qeth_ulp_enable(struct qeth_card *card)
2460{
73657a3e 2461 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2462 struct qeth_cmd_buffer *iob;
8ce7a9e0 2463 u16 max_mtu;
73657a3e 2464 int rc;
4a71df50 2465
57a688aa 2466 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2467
f19f8fd2 2468 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2469 if (!iob)
2470 return -ENOMEM;
4a71df50 2471
92d27209 2472 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2473 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2474 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2475 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2476 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2477 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2478 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2479 if (rc)
2480 return rc;
2481 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2482}
2483
2484static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2485 unsigned long data)
2486{
2487 struct qeth_cmd_buffer *iob;
2488
57a688aa 2489 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2490
2491 iob = (struct qeth_cmd_buffer *) data;
2492 memcpy(&card->token.ulp_connection_r,
2493 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2494 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2495 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2496 3)) {
57a688aa 2497 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2498 dev_err(&card->gdev->dev, "A connection could not be "
2499 "established because of an OLM limit\n");
4b7ae122 2500 return -EMLINK;
65a1f898 2501 }
7bf9bcff 2502 return 0;
4a71df50
FB		 2503}
2504
2505static int qeth_ulp_setup(struct qeth_card *card)
2506{
4a71df50
FB		 2507 __u16 temp;
2508 struct qeth_cmd_buffer *iob;
4a71df50 2509
57a688aa 2510 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2511
f19f8fd2 2512 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2513 if (!iob)
2514 return -ENOMEM;
4a71df50
FB		 2515
2516 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2517 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2518 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2519 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2520 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2521 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2522
fa115adf 2523 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
4a71df50
FB		 2524 temp = (card->info.cula << 8) + card->info.unit_addr2;
2525 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2526 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2527}
2528
e47ded97
JW		 2529static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2530 gfp_t gfp)
0da9581d 2531{
0da9581d
EL		 2532 struct qeth_qdio_out_buffer *newbuf;
2533
e47ded97 2534 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
3b346c18
JW		 2535 if (!newbuf)
2536 return -ENOMEM;
2537
d445a4e2 2538 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2539 skb_queue_head_init(&newbuf->skb_list);
2540 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
0da9581d
EL		 2541 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2542 q->bufs[bidx] = newbuf;
3b346c18 2543 return 0;
0da9581d
EL		 2544}
2545
afa0c590 2546static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2547{
2548 if (!q)
2549 return;
2550
41c47da3 2551 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2552 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2553 kfree(q);
2554}
2555
41c47da3 2556static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2557{
2558 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
e7a36d27 2559 unsigned int i;
d445a4e2
SO		 2560
2561 if (!q)
2562 return NULL;
2563
e7a36d27
JW		 2564 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2565 goto err_qdio_bufs;
2566
2567 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
e47ded97 2568 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
e7a36d27 2569 goto err_out_bufs;
d445a4e2 2570 }
e7a36d27 2571
d445a4e2 2572 return q;
e7a36d27
JW		 2573
2574err_out_bufs:
2575 while (i > 0)
396c1004 2576 qeth_free_out_buf(q->bufs[--i]);
e7a36d27
JW		 2577 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2578err_qdio_bufs:
2579 kfree(q);
2580 return NULL;
d445a4e2 2581}
0da9581d 2582
e53edf74
JW		 2583static void qeth_tx_completion_timer(struct timer_list *timer)
2584{
2585 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2586
2587 napi_schedule(&queue->napi);
2588 QETH_TXQ_STAT_INC(queue, completion_timer);
2589}
2590
41c47da3 2591static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50 2592{
e7a36d27 2593 unsigned int i;
4a71df50 2594
57a688aa 2595 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2596
2597 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2598 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2599 return 0;
2600
4a71df50
FB		 2601 /* inbound buffer pool */
2602 if (qeth_alloc_buffer_pool(card))
832585d2 2603 goto out_buffer_pool;
0da9581d 2604
4a71df50 2605 /* outbound */
4a71df50 2606 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2607 struct qeth_qdio_out_q *queue;
2608
2609 queue = qeth_alloc_output_queue();
2610 if (!queue)
4a71df50 2611 goto out_freeoutq;
57a688aa 2612 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2613 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2614 card->qdio.out_qs[i] = queue;
2615 queue->card = card;
2616 queue->queue_no = i;
c20383ad 2617 INIT_LIST_HEAD(&queue->pending_bufs);
a1668474 2618 spin_lock_init(&queue->lock);
e53edf74 2619 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
7a4b92e8
JW		 2620 if (IS_IQD(card)) {
2621 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2622 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2623 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2624 } else {
2625 queue->coalesce_usecs = USEC_PER_SEC;
2626 queue->max_coalesced_frames = 0;
2627 queue->rescan_usecs = 10 * USEC_PER_SEC;
2628 }
949bbf4d 2629 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
4a71df50 2630 }
0da9581d
EL		 2631
2632 /* completion */
2633 if (qeth_alloc_cq(card))
2634 goto out_freeoutq;
2635
4a71df50
FB		 2636 return 0;
2637
2638out_freeoutq:
bb92d3f8 2639 while (i > 0) {
afa0c590 2640 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2641 card->qdio.out_qs[i] = NULL;
2642 }
4a71df50 2643 qeth_free_buffer_pool(card);
832585d2 2644out_buffer_pool:
4a71df50
FB		 2645 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2646 return -ENOMEM;
2647}
2648
41c47da3 2649static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2650{
2651 int i, j;
2652
2653 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2654 QETH_QDIO_UNINITIALIZED)
2655 return;
2656
2657 qeth_free_cq(card);
d445a4e2 2658 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
832585d2 2659 if (card->qdio.in_q->bufs[j].rx_skb) {
fdd3c5f0 2660 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
832585d2
JW		 2661 card->qdio.in_q->bufs[j].rx_skb = NULL;
2662 }
d445a4e2 2663 }
832585d2 2664
d445a4e2
SO		 2665 /* inbound buffer pool */
2666 qeth_free_buffer_pool(card);
2667 /* free outbound qdio_qs */
bb92d3f8
JW		 2668 for (i = 0; i < card->qdio.no_out_queues; i++) {
2669 qeth_free_output_queue(card->qdio.out_qs[i]);
2670 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2671 }
2672}
2673
72d5e850
JW		 2674static void qeth_fill_qib_parms(struct qeth_card *card,
2675 struct qeth_qib_parms *parms)
2676{
949bbf4d
JW		 2677 struct qeth_qdio_out_q *queue;
2678 unsigned int i;
2679
72d5e850
JW		 2680 parms->pcit_magic[0] = 'P';
2681 parms->pcit_magic[1] = 'C';
2682 parms->pcit_magic[2] = 'I';
2683 parms->pcit_magic[3] = 'T';
2684 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2685 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2686 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2687 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2688
2689 parms->blkt_magic[0] = 'B';
2690 parms->blkt_magic[1] = 'L';
2691 parms->blkt_magic[2] = 'K';
2692 parms->blkt_magic[3] = 'T';
2693 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2694 parms->blkt_total = card->info.blkt.time_total;
2695 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2696 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
949bbf4d
JW		 2697
2698 /* Prio-queueing implicitly uses the default priorities: */
2699 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2700 return;
2701
2702 parms->pque_magic[0] = 'P';
2703 parms->pque_magic[1] = 'Q';
2704 parms->pque_magic[2] = 'U';
2705 parms->pque_magic[3] = 'E';
2706 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2707 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2708 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2709
2710 qeth_for_each_output_queue(card, queue, i)
2711 parms->pque_priority[i] = queue->priority;
4a71df50
FB		 2712}
2713
2714static int qeth_qdio_activate(struct qeth_card *card)
2715{
57a688aa 2716 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2717 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2718}
2719
2720static int qeth_dm_act(struct qeth_card *card)
2721{
4a71df50
FB		 2722 struct qeth_cmd_buffer *iob;
2723
57a688aa 2724 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2725
f19f8fd2 2726 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2727 if (!iob)
2728 return -ENOMEM;
4a71df50
FB		 2729
2730 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2731 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2732 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2733 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2734 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2735}
2736
2737static int qeth_mpc_initialize(struct qeth_card *card)
2738{
2739 int rc;
2740
57a688aa 2741 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2742
2743 rc = qeth_issue_next_read(card);
2744 if (rc) {
57a688aa 2745 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2746 return rc;
2747 }
2748 rc = qeth_cm_enable(card);
2749 if (rc) {
57a688aa 2750 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
8b5026bc 2751 return rc;
4a71df50
FB		 2752 }
2753 rc = qeth_cm_setup(card);
2754 if (rc) {
57a688aa 2755 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
8b5026bc 2756 return rc;
4a71df50
FB		 2757 }
2758 rc = qeth_ulp_enable(card);
2759 if (rc) {
57a688aa 2760 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
8b5026bc 2761 return rc;
4a71df50
FB		 2762 }
2763 rc = qeth_ulp_setup(card);
2764 if (rc) {
57a688aa 2765 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2766 return rc;
4a71df50 2767 }
41c47da3 2768 rc = qeth_alloc_qdio_queues(card);
4a71df50 2769 if (rc) {
57a688aa 2770 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2771 return rc;
4a71df50
FB		 2772 }
2773 rc = qeth_qdio_establish(card);
2774 if (rc) {
57a688aa 2775 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2776 qeth_free_qdio_queues(card);
8b5026bc 2777 return rc;
4a71df50
FB		 2778 }
2779 rc = qeth_qdio_activate(card);
2780 if (rc) {
57a688aa 2781 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
8b5026bc 2782 return rc;
4a71df50
FB		 2783 }
2784 rc = qeth_dm_act(card);
2785 if (rc) {
57a688aa 2786 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
8b5026bc 2787 return rc;
4a71df50
FB		 2788 }
2789
2790 return 0;
4a71df50
FB		 2791}
2792
b7ea041b 2793static void qeth_print_status_message(struct qeth_card *card)
4a71df50
FB		 2794{
2795 switch (card->info.type) {
5113fec0
UB		 2796 case QETH_CARD_TYPE_OSD:
2797 case QETH_CARD_TYPE_OSM:
2798 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2799 /* VM will use a non-zero first character
2800 * to indicate a HiperSockets like reporting
2801 * of the level OSA sets the first character to zero
2802 * */
2803 if (!card->info.mcl_level[0]) {
74c05a38
TW		 2804 scnprintf(card->info.mcl_level,
2805 sizeof(card->info.mcl_level),
2806 "%02x%02x",
2807 card->info.mcl_level[2],
2808 card->info.mcl_level[3]);
4a71df50
FB		 2809 break;
2810 }
df561f66 2811 fallthrough;
4a71df50 2812 case QETH_CARD_TYPE_IQD:
379ac99e 2813 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2814 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2815 card->info.mcl_level[0]];
2816 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2817 card->info.mcl_level[1]];
2818 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2819 card->info.mcl_level[2]];
2820 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2821 card->info.mcl_level[3]];
2822 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2823 }
2824 break;
2825 default:
2826 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2827 }
239ff408
UB		 2828 dev_info(&card->gdev->dev,
2829 "Device is a%s card%s%s%s\nwith link type %s.\n",
2830 qeth_get_cardname(card),
2831 (card->info.mcl_level[0]) ? " (level: " : "",
2832 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2833 (card->info.mcl_level[0]) ? ")" : "",
2834 qeth_get_cardname_short(card));
4a71df50 2835}
4a71df50 2836
4a71df50
FB		 2837static void qeth_initialize_working_pool_list(struct qeth_card *card)
2838{
2839 struct qeth_buffer_pool_entry *entry;
2840
847a50fd 2841 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2842
2843 list_for_each_entry(entry,
2844 &card->qdio.init_pool.entry_list, init_list) {
2845 qeth_put_buffer_pool_entry(card, entry);
2846 }
2847}
2848
cef6ff22
JW		 2849static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2850 struct qeth_card *card)
4a71df50 2851{
4a71df50
FB		 2852 struct qeth_buffer_pool_entry *entry;
2853 int i, free;
4a71df50
FB		 2854
2855 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2856 return NULL;
2857
bb59c8a8 2858 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
4a71df50
FB		 2859 free = 1;
2860 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2861 if (page_count(entry->elements[i]) > 1) {
4a71df50
FB		 2862 free = 0;
2863 break;
2864 }
2865 }
2866 if (free) {
2867 list_del_init(&entry->list);
2868 return entry;
2869 }
2870 }
2871
2872 /* no free buffer in pool so take first one and swap pages */
bb59c8a8
JW		 2873 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2874 struct qeth_buffer_pool_entry, list);
4a71df50 2875 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2876 if (page_count(entry->elements[i]) > 1) {
714c9108 2877 struct page *page = dev_alloc_page();
f81649df
JW		 2878
2879 if (!page)
4a71df50 2880 return NULL;
f81649df
JW		 2881
2882 __free_page(entry->elements[i]);
2883 entry->elements[i] = page;
2884 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2885 }
2886 }
2887 list_del_init(&entry->list);
2888 return entry;
2889}
2890
2891static int qeth_init_input_buffer(struct qeth_card *card,
2892 struct qeth_qdio_buffer *buf)
2893{
eff73e16 2894 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
4a71df50
FB		 2895 int i;
2896
b3332930 2897 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2 2898 buf->rx_skb = netdev_alloc_skb(card->dev,
8ca8559f
JW		 2899 ETH_HLEN +
2900 sizeof(struct ipv6hdr));
b3332930 2901 if (!buf->rx_skb)
17413852 2902 return -ENOMEM;
b3332930
FB		 2903 }
2904
eff73e16
JW		 2905 if (!pool_entry) {
2906 pool_entry = qeth_find_free_buffer_pool_entry(card);
2907 if (!pool_entry)
2908 return -ENOBUFS;
2909
2910 buf->pool_entry = pool_entry;
2911 }
4a71df50
FB		 2912
2913 /*
2914 * since the buffer is accessed only from the input_tasklet
2915 * there shouldn't be a need to synchronize; also, since we use
2916 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2917 * buffers
2918 */
4a71df50
FB		 2919 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2920 buf->buffer->element[i].length = PAGE_SIZE;
2db01da8 2921 buf->buffer->element[i].addr =
f81649df 2922 page_to_phys(pool_entry->elements[i]);
4a71df50 2923 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2924 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2925 else
3ec90878
JG		 2926 buf->buffer->element[i].eflags = 0;
2927 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2928 }
2929 return 0;
2930}
2931
8b664cd1
JW		 2932static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2933 struct qeth_qdio_out_q *queue)
2934{
2935 if (!IS_IQD(card) ||
2936 qeth_iqd_is_mcast_queue(card, queue) ||
2937 card->options.cq == QETH_CQ_ENABLED ||
2938 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2939 return 1;
2940
2941 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2942}
2943
aa3ad392 2944static int qeth_init_qdio_queues(struct qeth_card *card)
4a71df50 2945{
9e7d92e0 2946 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
7b579ce5 2947 unsigned int i;
4a71df50
FB		 2948 int rc;
2949
57a688aa 2950 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2951
2952 /* inbound queue */
1b45c80b
JW		 2953 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2954 memset(&card->rx, 0, sizeof(struct qeth_rx));
17413852 2955
4a71df50
FB		 2956 qeth_initialize_working_pool_list(card);
2957 /*give only as many buffers to hardware as we have buffer pool entries*/
9e7d92e0 2958 for (i = 0; i < rx_bufs; i++) {
17413852
JW		 2959 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2960 if (rc)
2961 return rc;
2962 }
2963
9e7d92e0 2964 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
a60bffe5 2965 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
4a71df50 2966 if (rc) {
57a688aa 2967 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2968 return rc;
2969 }
0da9581d
EL		 2970
2971 /* completion */
2972 rc = qeth_cq_init(card);
2973 if (rc) {
2974 return rc;
2975 }
2976
4a71df50
FB		 2977 /* outbound queue */
2978 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 2979 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2980
2981 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2982 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2983 queue->next_buf_to_fill = 0;
2984 queue->do_pack = 0;
9549d70a 2985 queue->prev_hdr = NULL;
ee1e52d1 2986 queue->coalesced_frames = 0;
9549d70a 2987 queue->bulk_start = 0;
8b664cd1
JW		 2988 queue->bulk_count = 0;
2989 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
4e26c5fe
JW		 2990 atomic_set(&queue->used_buffers, 0);
2991 atomic_set(&queue->set_pci_flags_count, 0);
96bd6c94 2992 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
4a71df50
FB		 2993 }
2994 return 0;
2995}
4a71df50 2996
48ce6f89 2997static void qeth_ipa_finalize_cmd(struct qeth_card *card,
c3b2218d 2998 struct qeth_cmd_buffer *iob)
48ce6f89 2999{
c3b2218d 3000 qeth_mpc_finalize_cmd(card, iob);
48ce6f89
JW		 3001
3002 /* override with IPA-specific values: */
308946b0 3003 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
48ce6f89
JW		 3004}
3005
a8c7629c
JW		 3006static void qeth_prepare_ipa_cmd(struct qeth_card *card,
3007 struct qeth_cmd_buffer *iob, u16 cmd_length)
605c9d5f
JW		 3008{
3009 u8 prot_type = qeth_mpc_select_prot_type(card);
c3b2218d 3010 u16 total_length = iob->length;
605c9d5f 3011
f19f8fd2
JW		 3012 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3013 iob->data);
48ce6f89 3014 iob->finalize = qeth_ipa_finalize_cmd;
782e4a79 3015
605c9d5f 3016 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 3017 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 3018 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 3019 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3020 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 3021 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3022 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 3023 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f 3024}
605c9d5f 3025
7f92316c
JW		 3026static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3027 struct qeth_cmd_buffer *reply)
3028{
3029 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3030
3031 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3032}
3033
a59d121d
JW		 3034struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3035 enum qeth_ipa_cmds cmd_code,
3036 enum qeth_prot_versions prot,
3037 unsigned int data_length)
3038{
3039 struct qeth_cmd_buffer *iob;
c3b2218d 3040 struct qeth_ipacmd_hdr *hdr;
a59d121d
JW		 3041
3042 data_length += offsetof(struct qeth_ipa_cmd, data);
3043 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3044 QETH_IPA_TIMEOUT);
3045 if (!iob)
3046 return NULL;
3047
a8c7629c
JW		 3048 qeth_prepare_ipa_cmd(card, iob, data_length);
3049 iob->match = qeth_ipa_match_reply;
c3b2218d
JW		 3050
3051 hdr = &__ipa_cmd(iob)->hdr;
3052 hdr->command = cmd_code;
3053 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3054 /* hdr->seqno is set by qeth_send_control_data() */
101e314d 3055 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
c3b2218d
JW		 3056 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3057 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3058 hdr->param_count = 1;
3059 hdr->prot_version = prot;
a59d121d
JW		 3060 return iob;
3061}
3062EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3063
742d4d40
JW		 3064static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3065 struct qeth_reply *reply, unsigned long data)
3066{
3067 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3068
3069 return (cmd->hdr.return_code) ? -EIO : 0;
3070}
3071
7ffaef82 3072/*
efbbc1d5
EC		 3073 * qeth_send_ipa_cmd() - send an IPA command
3074 *
3075 * See qeth_send_control_data() for explanation of the arguments.
3076 */
3077
4a71df50
FB		 3078int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3079 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3080 unsigned long),
3081 void *reply_param)
3082{
3083 int rc;
4a71df50 3084
847a50fd 3085 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 3086
2e873d10 3087 if (card->read_or_write_problem) {
c3b2218d 3088 qeth_put_cmd(iob);
2e873d10
JW		 3089 return -EIO;
3090 }
3091
742d4d40
JW		 3092 if (reply_cb == NULL)
3093 reply_cb = qeth_send_ipa_cmd_cb;
c3b2218d 3094 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
908abbb5
UB		 3095 if (rc == -ETIME) {
3096 qeth_clear_ipacmd_list(card);
3097 qeth_schedule_recovery(card);
3098 }
4a71df50
FB		 3099 return rc;
3100}
3101EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3102
4b7ae122
JW		 3103static int qeth_send_startlan_cb(struct qeth_card *card,
3104 struct qeth_reply *reply, unsigned long data)
3105{
3106 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3107
3108 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3109 return -ENETDOWN;
3110
3111 return (cmd->hdr.return_code) ? -EIO : 0;
3112}
3113
10340510 3114static int qeth_send_startlan(struct qeth_card *card)
4a71df50 3115{
70919e23 3116 struct qeth_cmd_buffer *iob;
4a71df50 3117
57a688aa 3118 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 3119
a59d121d 3120 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 3121 if (!iob)
3122 return -ENOMEM;
4b7ae122 3123 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 3124}
4a71df50 3125
686c97ee 3126static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 3127{
686c97ee 3128 if (!cmd->hdr.return_code)
4a71df50
FB		 3129 cmd->hdr.return_code =
3130 cmd->data.setadapterparms.hdr.return_code;
686c97ee 3131 return cmd->hdr.return_code;
4a71df50 3132}
4a71df50
FB		 3133
3134static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3135 struct qeth_reply *reply, unsigned long data)
3136{
686c97ee 3137 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
101e314d 3138 struct qeth_query_cmds_supp *query_cmd;
4a71df50 3139
847a50fd 3140 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 3141 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3142 return -EIO;
4a71df50 3143
101e314d
JW		 3144 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3145 if (query_cmd->lan_type & 0x7f) {
3146 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3147 return -EPROTONOSUPPORT;
3148
3149 card->info.link_type = query_cmd->lan_type;
57a688aa 3150 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 3151 }
101e314d
JW		 3152
3153 card->options.adp.supported = query_cmd->supported_cmds;
686c97ee 3154 return 0;
4a71df50
FB		 3155}
3156
eb3fb0ba 3157static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 3158 enum qeth_ipa_setadp_cmd adp_cmd,
3159 unsigned int data_length)
4a71df50 3160{
b9150461 3161 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 3162 struct qeth_cmd_buffer *iob;
4a71df50 3163
b9150461
JW		 3164 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3165 data_length +
3166 offsetof(struct qeth_ipacmd_setadpparms,
3167 data));
3168 if (!iob)
3169 return NULL;
4a71df50 3170
b9150461
JW		 3171 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3172 hdr->cmdlength = sizeof(*hdr) + data_length;
3173 hdr->command_code = adp_cmd;
3174 hdr->used_total = 1;
3175 hdr->seq_no = 1;
4a71df50
FB		 3176 return iob;
3177}
4a71df50 3178
09960b3a 3179static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 3180{
3181 int rc;
3182 struct qeth_cmd_buffer *iob;
3183
847a50fd 3184 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 3185 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 3186 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 3187 if (!iob)
3188 return -ENOMEM;
4a71df50
FB		 3189 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3190 return rc;
3191}
4a71df50 3192
1da74b1c
FB		 3193static int qeth_query_ipassists_cb(struct qeth_card *card,
3194 struct qeth_reply *reply, unsigned long data)
3195{
3196 struct qeth_ipa_cmd *cmd;
3197
57a688aa 3198 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 3199
3200 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 3201
3202 switch (cmd->hdr.return_code) {
742d4d40
JW		 3203 case IPA_RC_SUCCESS:
3204 break;
a134884a
SR		 3205 case IPA_RC_NOTSUPP:
3206 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 3207 QETH_CARD_TEXT(card, 2, "ipaunsup");
52f82bf1
JW		 3208 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3209 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
742d4d40 3210 return -EOPNOTSUPP;
a134884a 3211 default:
742d4d40
JW		 3212 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3213 CARD_DEVID(card), cmd->hdr.return_code);
3214 return -EIO;
a134884a
SR		 3215 }
3216
52f82bf1
JW		 3217 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3218 card->options.ipa4 = cmd->hdr.assists;
3219 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3220 card->options.ipa6 = cmd->hdr.assists;
3221 else
e19e5be8
JW		 3222 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3223 CARD_DEVID(card));
1da74b1c
FB		 3224 return 0;
3225}
3226
09960b3a
JW		 3227static int qeth_query_ipassists(struct qeth_card *card,
3228 enum qeth_prot_versions prot)
1da74b1c
FB		 3229{
3230 int rc;
3231 struct qeth_cmd_buffer *iob;
3232
57a688aa 3233 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 3234 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 3235 if (!iob)
3236 return -ENOMEM;
1da74b1c
FB		 3237 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3238 return rc;
3239}
1da74b1c 3240
45cbb2e4
SR		 3241static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3242 struct qeth_reply *reply, unsigned long data)
3243{
686c97ee 3244 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 3245 struct qeth_query_switch_attributes *attrs;
686c97ee 3246 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 3247
3248 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 3249 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3250 return -EIO;
45cbb2e4 3251
686c97ee
JW		 3252 sw_info = (struct qeth_switch_info *)reply->param;
3253 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3254 sw_info->capabilities = attrs->capabilities;
3255 sw_info->settings = attrs->settings;
3256 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3257 sw_info->settings);
45cbb2e4
SR		 3258 return 0;
3259}
3260
3261int qeth_query_switch_attributes(struct qeth_card *card,
3262 struct qeth_switch_info *sw_info)
3263{
3264 struct qeth_cmd_buffer *iob;
3265
3266 QETH_CARD_TEXT(card, 2, "qswiattr");
3267 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3268 return -EOPNOTSUPP;
3269 if (!netif_carrier_ok(card->dev))
3270 return -ENOMEDIUM;
b9150461 3271 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 3272 if (!iob)
3273 return -ENOMEM;
45cbb2e4
SR		 3274 return qeth_send_ipa_cmd(card, iob,
3275 qeth_query_switch_attributes_cb, sw_info);
3276}
45cbb2e4 3277
5cfbe10a
JW		 3278struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3279 enum qeth_diags_cmds sub_cmd,
3280 unsigned int data_length)
3281{
3282 struct qeth_ipacmd_diagass *cmd;
3283 struct qeth_cmd_buffer *iob;
3284
3285 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3286 DIAG_HDR_LEN + data_length);
3287 if (!iob)
3288 return NULL;
3289
3290 cmd = &__ipa_cmd(iob)->data.diagass;
3291 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3292 cmd->subcmd = sub_cmd;
3293 return iob;
3294}
3295EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3296
1da74b1c
FB		 3297static int qeth_query_setdiagass_cb(struct qeth_card *card,
3298 struct qeth_reply *reply, unsigned long data)
3299{
742d4d40
JW		 3300 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3301 u16 rc = cmd->hdr.return_code;
1da74b1c 3302
742d4d40 3303 if (rc) {
1da74b1c 3304 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 3305 return -EIO;
3306 }
3307
3308 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3309 return 0;
3310}
3311
3312static int qeth_query_setdiagass(struct qeth_card *card)
3313{
3314 struct qeth_cmd_buffer *iob;
1da74b1c 3315
57a688aa 3316 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3317 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3318 if (!iob)
3319 return -ENOMEM;
1da74b1c
FB		 3320 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3321}
3322
3323static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3324{
3325 unsigned long info = get_zeroed_page(GFP_KERNEL);
3326 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3327 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3328 struct ccw_dev_id ccwid;
caf757c6 3329 int level;
1da74b1c
FB		 3330
3331 tid->chpid = card->info.chpid;
3332 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3333 tid->ssid = ccwid.ssid;
3334 tid->devno = ccwid.devno;
3335 if (!info)
3336 return;
caf757c6
HC		 3337 level = stsi(NULL, 0, 0, 0);
3338 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3339 tid->lparnr = info222->lpar_number;
caf757c6 3340 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3341 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3342 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3343 }
3344 free_page(info);
1da74b1c
FB		 3345}
3346
3347static int qeth_hw_trap_cb(struct qeth_card *card,
3348 struct qeth_reply *reply, unsigned long data)
3349{
742d4d40
JW		 3350 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3351 u16 rc = cmd->hdr.return_code;
1da74b1c 3352
742d4d40 3353 if (rc) {
1da74b1c 3354 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3355 return -EIO;
3356 }
1da74b1c
FB		 3357 return 0;
3358}
3359
3360int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3361{
3362 struct qeth_cmd_buffer *iob;
3363 struct qeth_ipa_cmd *cmd;
3364
57a688aa 3365 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3366 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3367 if (!iob)
3368 return -ENOMEM;
ff5caa7a 3369 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3370 cmd->data.diagass.type = 1;
3371 cmd->data.diagass.action = action;
3372 switch (action) {
3373 case QETH_DIAGS_TRAP_ARM:
3374 cmd->data.diagass.options = 0x0003;
3375 cmd->data.diagass.ext = 0x00010000 +
3376 sizeof(struct qeth_trap_id);
3377 qeth_get_trap_id(card,
3378 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3379 break;
3380 case QETH_DIAGS_TRAP_DISARM:
3381 cmd->data.diagass.options = 0x0001;
3382 break;
3383 case QETH_DIAGS_TRAP_CAPTURE:
3384 break;
3385 }
3386 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3387}
1da74b1c 3388
d73ef324
JW		 3389static int qeth_check_qdio_errors(struct qeth_card *card,
3390 struct qdio_buffer *buf,
3391 unsigned int qdio_error,
3392 const char *dbftext)
4a71df50 3393{
779e6e1c 3394 if (qdio_error) {
847a50fd 3395 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3396 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3397 buf->element[15].sflags);
38593d01 3398 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3399 buf->element[14].sflags);
38593d01 3400 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3401 if ((buf->element[15].sflags) == 0x12) {
845ef904 3402 QETH_CARD_STAT_INC(card, rx_fifo_errors);
76b11f8e
UB		 3403 return 0;
3404 } else
3405 return 1;
4a71df50
FB		 3406 }
3407 return 0;
3408}
4a71df50 3409
7c94a882
JW		 3410static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3411 unsigned int count)
4a71df50
FB		 3412{
3413 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3414 struct list_head *lh;
4a71df50
FB		 3415 int i;
3416 int rc;
3417 int newcount = 0;
3418
4a71df50
FB		 3419 /* only requeue at a certain threshold to avoid SIGAs */
3420 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3421 for (i = queue->next_buf_to_init;
3422 i < queue->next_buf_to_init + count; ++i) {
3423 if (qeth_init_input_buffer(card,
ec2b559d 3424 &queue->bufs[QDIO_BUFNR(i)])) {
4a71df50
FB		 3425 break;
3426 } else {
3427 newcount++;
3428 }
3429 }
3430
3431 if (newcount < count) {
3432 /* we are in memory shortage so we switch back to
3433 traditional skb allocation and drop packages */
4a71df50
FB		 3434 atomic_set(&card->force_alloc_skb, 3);
3435 count = newcount;
3436 } else {
4a71df50
FB		 3437 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3438 }
3439
b3332930
FB		 3440 if (!count) {
3441 i = 0;
3442 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3443 i++;
3444 if (i == card->qdio.in_buf_pool.buf_count) {
3445 QETH_CARD_TEXT(card, 2, "qsarbw");
b3332930
FB		 3446 schedule_delayed_work(
3447 &card->buffer_reclaim_work,
3448 QETH_RECLAIM_WORK_TIME);
3449 }
7c94a882 3450 return 0;
b3332930
FB		 3451 }
3452
a60bffe5
JW		 3453 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
3454 queue->next_buf_to_init,
3455 count);
4a71df50 3456 if (rc) {
847a50fd 3457 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50 3458 }
ec2b559d
JW		 3459 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3460 count);
7c94a882 3461 return count;
4a71df50 3462 }
7c94a882
JW		 3463
3464 return 0;
4a71df50 3465}
d73ef324
JW		 3466
3467static void qeth_buffer_reclaim_work(struct work_struct *work)
3468{
beaadcc6
JW		 3469 struct qeth_card *card = container_of(to_delayed_work(work),
3470 struct qeth_card,
3471 buffer_reclaim_work);
d73ef324 3472
7c94a882
JW		 3473 local_bh_disable();
3474 napi_schedule(&card->napi);
3475 /* kick-start the NAPI softirq: */
3476 local_bh_enable();
d73ef324 3477}
4a71df50 3478
d7a39937 3479static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3480 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3481{
3ec90878 3482 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3483
847a50fd 3484 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3485 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3486
3487 if (!qdio_err)
d7a39937 3488 return;
d303b6fd
JG		 3489
3490 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3491 return;
d303b6fd 3492
847a50fd
CO		 3493 QETH_CARD_TEXT(card, 1, "lnkfail");
3494 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3495 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3496}
3497
664e42ac
JW		 3498/**
3499 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3500 * @queue: queue to check for packing buffer
3501 *
3502 * Returns number of buffers that were prepared for flush.
3503 */
3504static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3505{
3506 struct qeth_qdio_out_buffer *buffer;
3507
3508 buffer = queue->bufs[queue->next_buf_to_fill];
3509 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3510 (buffer->next_element_to_fill > 0)) {
3511 /* it's a packing buffer */
3512 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3513 queue->next_buf_to_fill =
ec2b559d 3514 QDIO_BUFNR(queue->next_buf_to_fill + 1);
664e42ac
JW		 3515 return 1;
3516 }
3517 return 0;
3518}
3519
4a71df50
FB		 3520/*
3521 * Switched to packing state if the number of used buffers on a queue
3522 * reaches a certain limit.
3523 */
3524static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3525{
3526 if (!queue->do_pack) {
3527 if (atomic_read(&queue->used_buffers)
3528 >= QETH_HIGH_WATERMARK_PACK){
3529 /* switch non-PACKING -> PACKING */
847a50fd 3530 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3531 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3532 queue->do_pack = 1;
3533 }
3534 }
3535}
3536
3537/*
3538 * Switches from packing to non-packing mode. If there is a packing
3539 * buffer on the queue this buffer will be prepared to be flushed.
3540 * In that case 1 is returned to inform the caller. If no buffer
3541 * has to be flushed, zero is returned.
3542 */
3543static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3544{
4a71df50
FB		 3545 if (queue->do_pack) {
3546 if (atomic_read(&queue->used_buffers)
3547 <= QETH_LOW_WATERMARK_PACK) {
3548 /* switch PACKING -> non-PACKING */
847a50fd 3549 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3550 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3551 queue->do_pack = 0;
664e42ac 3552 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3553 }
3554 }
4a71df50
FB		 3555 return 0;
3556}
3557
779e6e1c
JG		 3558static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3559 int count)
4a71df50 3560{
6ee091ef 3561 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
e53edf74 3562 struct qeth_card *card = queue->card;
7a4b92e8 3563 unsigned int frames, usecs;
396c1004 3564 struct qaob *aob = NULL;
4a71df50
FB		 3565 int rc;
3566 int i;
4a71df50 3567
4a71df50 3568 for (i = index; i < index + count; ++i) {
ec2b559d 3569 unsigned int bidx = QDIO_BUFNR(i);
8d145da2 3570 struct sk_buff *skb;
ec2b559d 3571
0da9581d 3572 buf = queue->bufs[bidx];
3ec90878
JG		 3573 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3574 SBAL_EFLAGS_LAST_ENTRY;
ee1e52d1 3575 queue->coalesced_frames += buf->frames;
4a71df50 3576
8d145da2
JW		 3577 if (IS_IQD(card)) {
3578 skb_queue_walk(&buf->skb_list, skb)
3579 skb_tx_timestamp(skb);
8d145da2 3580 }
6ee091ef 3581 }
4a71df50 3582
396c1004
JW		 3583 if (IS_IQD(card)) {
3584 if (card->options.cq == QETH_CQ_ENABLED &&
3585 !qeth_iqd_is_mcast_queue(card, queue) &&
3586 count == 1) {
3587 if (!buf->aob)
a18c28f0
JW		 3588 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3589 GFP_ATOMIC);
396c1004 3590 if (buf->aob) {
838e4cc8
JW		 3591 struct qeth_qaob_priv1 *priv;
3592
396c1004 3593 aob = buf->aob;
838e4cc8
JW		 3594 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3595 priv->state = QETH_QAOB_ISSUED;
3596 priv->queue_no = queue->queue_no;
396c1004
JW		 3597 }
3598 }
3599 } else {
4a71df50
FB		 3600 if (!queue->do_pack) {
3601 if ((atomic_read(&queue->used_buffers) >=
3602 (QETH_HIGH_WATERMARK_PACK -
3603 QETH_WATERMARK_PACK_FUZZ)) &&
3604 !atomic_read(&queue->set_pci_flags_count)) {
3605 /* it's likely that we'll go to packing
3606 * mode soon */
3607 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3608 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3609 }
3610 } else {
3611 if (!atomic_read(&queue->set_pci_flags_count)) {
3612 /*
3613 * there's no outstanding PCI any more, so we
1aaa62c4 3614 * have to request a PCI to be sure the PCI
4a71df50
FB		 3615 * will wake at some time in the future then we
3616 * can flush packed buffers that might still be
3617 * hanging around, which can happen if no
3618 * further send was requested by the stack
3619 */
3620 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3621 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3622 }
3623 }
3624 }
3625
1ab2f8c6 3626 QETH_TXQ_STAT_INC(queue, doorbell);
a60bffe5
JW		 3627 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
3628 index, count, aob);
e53edf74 3629
d6e51503
JW		 3630 switch (rc) {
3631 case 0:
3632 case -ENOBUFS:
3633 /* ignore temporary SIGA errors without busy condition */
3634
3635 /* Fake the TX completion interrupt: */
7a4b92e8
JW		 3636 frames = READ_ONCE(queue->max_coalesced_frames);
3637 usecs = READ_ONCE(queue->coalesce_usecs);
d6e51503 3638
7a4b92e8
JW		 3639 if (frames && queue->coalesced_frames >= frames) {
3640 napi_schedule(&queue->napi);
3641 queue->coalesced_frames = 0;
3642 QETH_TXQ_STAT_INC(queue, coal_frames);
3643 } else if (qeth_use_tx_irqs(card) &&
3644 atomic_read(&queue->used_buffers) >= 32) {
3645 /* Old behaviour carried over from the qdio layer: */
3646 napi_schedule(&queue->napi);
3647 QETH_TXQ_STAT_INC(queue, coal_frames);
3648 } else if (usecs) {
3649 qeth_tx_arm_timer(queue, usecs);
ee1e52d1 3650 }
e53edf74 3651
d6e51503
JW		 3652 break;
3653 default:
847a50fd 3654 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3655 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3656 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3657 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3658 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3659
4a71df50
FB		 3660 /* this must not happen under normal circumstances. if it
3661 * happens something is really wrong -> recover */
3662 qeth_schedule_recovery(queue->card);
4a71df50 3663 }
4a71df50
FB		 3664}
3665
9549d70a
JW		 3666static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3667{
8b664cd1 3668 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3669
8b664cd1 3670 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3671 queue->prev_hdr = NULL;
8b664cd1 3672 queue->bulk_count = 0;
9549d70a
JW		 3673}
3674
4a71df50
FB		 3675static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3676{
4a71df50 3677 /*
dbc9e341 3678 * check if we have to switch to non-packing mode or if
4a71df50
FB		 3679 * we have to get a pci flag out on the queue
3680 */
3681 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3682 !atomic_read(&queue->set_pci_flags_count)) {
a1668474 3683 unsigned int index, flush_cnt;
a1668474
JW		 3684
3685 spin_lock(&queue->lock);
3686
3687 index = queue->next_buf_to_fill;
a1668474
JW		 3688
3689 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3690 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3691 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3692
3693 if (flush_cnt) {
3694 qeth_flush_buffers(queue, index, flush_cnt);
6dc490e8 3695 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3696 }
a1668474
JW		 3697
3698 spin_unlock(&queue->lock);
4a71df50
FB		 3699 }
3700}
3701
0a6e6345 3702static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
a1c3ed4c
FB		 3703{
3704 struct qeth_card *card = (struct qeth_card *)card_ptr;
3705
3d35dbe6 3706 napi_schedule_irqoff(&card->napi);
a1c3ed4c 3707}
a1c3ed4c 3708
0da9581d
EL		 3709int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3710{
3711 int rc;
3712
3713 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3714 rc = -1;
3715 goto out;
3716 } else {
3717 if (card->options.cq == cq) {
3718 rc = 0;
3719 goto out;
3720 }
3721
41c47da3 3722 qeth_free_qdio_queues(card);
0da9581d
EL		 3723 card->options.cq = cq;
3724 rc = 0;
3725 }
3726out:
3727 return rc;
3728
3729}
3730EXPORT_SYMBOL_GPL(qeth_configure_cq);
3731
838e4cc8
JW		 3732static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3733{
3734 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3735 unsigned int queue_no = priv->queue_no;
3736
3737 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3738
3739 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3740 queue_no < card->qdio.no_out_queues)
3741 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3742}
3743
3b346c18
JW		 3744static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3745 unsigned int queue, int first_element,
3746 int count)
3747{
0da9581d
EL		 3748 struct qeth_qdio_q *cq = card->qdio.c_q;
3749 int i;
3750 int rc;
3751
0da9581d
EL		 3752 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3753 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3754 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3755
3756 if (qdio_err) {
3a18d754 3757 netif_tx_stop_all_queues(card->dev);
0da9581d 3758 qeth_schedule_recovery(card);
4326b5b4 3759 return;
0da9581d
EL		 3760 }
3761
3762 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3763 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3764 int e = 0;
0da9581d 3765
903e4853
UB		 3766 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3767 buffer->element[e].addr) {
2db01da8 3768 unsigned long phys_aob_addr = buffer->element[e].addr;
0da9581d 3769
838e4cc8 3770 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
0da9581d
EL		 3771 ++e;
3772 }
3b346c18 3773 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d 3774 }
a60bffe5
JW		 3775 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
3776 cq->next_buf_to_init, count);
0da9581d
EL		 3777 if (rc) {
3778 dev_warn(&card->gdev->dev,
3779 "QDIO reported an error, rc=%i\n", rc);
3780 QETH_CARD_TEXT(card, 2, "qcqherr");
3781 }
ec2b559d
JW		 3782
3783 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3784}
3785
7bcd64eb
JW		 3786static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3787 unsigned int qdio_err, int queue,
3788 int first_elem, int count,
3789 unsigned long card_ptr)
a1c3ed4c
FB		 3790{
3791 struct qeth_card *card = (struct qeth_card *)card_ptr;
3792
0da9581d
EL		 3793 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3794 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3795
0a6e6345 3796 if (qdio_err)
a1c3ed4c
FB		 3797 qeth_schedule_recovery(card);
3798}
a1c3ed4c 3799
7bcd64eb
JW		 3800static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3801 unsigned int qdio_error, int __queue,
3802 int first_element, int count,
3803 unsigned long card_ptr)
4a71df50
FB		 3804{
3805 struct qeth_card *card = (struct qeth_card *) card_ptr;
4a71df50 3806
bdfd740c
JW		 3807 QETH_CARD_TEXT(card, 2, "achkcond");
3808 netif_tx_stop_all_queues(card->dev);
3809 qeth_schedule_recovery(card);
4a71df50 3810}
4a71df50 3811
7ffaef82 3812/*
290b8348
SR		 3813 * Note: Function assumes that we have 4 outbound queues.
3814 */
1b9e410f 3815static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3816{
e6c15b5f 3817 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3818 u8 tos;
3819
290b8348
SR		 3820 switch (card->qdio.do_prio_queueing) {
3821 case QETH_PRIO_Q_ING_TOS:
3822 case QETH_PRIO_Q_ING_PREC:
17f3a8b5
JW		 3823 switch (vlan_get_protocol(skb)) {
3824 case htons(ETH_P_IP):
290b8348
SR		 3825 tos = ipv4_get_dsfield(ip_hdr(skb));
3826 break;
17f3a8b5 3827 case htons(ETH_P_IPV6):
290b8348
SR		 3828 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3829 break;
3830 default:
3831 return card->qdio.default_out_queue;
4a71df50 3832 }
290b8348 3833 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3834 return ~tos >> 6 & 3;
290b8348 3835 if (tos & IPTOS_MINCOST)
e6c15b5f 3836 return 3;
290b8348
SR		 3837 if (tos & IPTOS_RELIABILITY)
3838 return 2;
3839 if (tos & IPTOS_THROUGHPUT)
3840 return 1;
3841 if (tos & IPTOS_LOWDELAY)
3842 return 0;
d66cb37e
SR		 3843 break;
3844 case QETH_PRIO_Q_ING_SKB:
3845 if (skb->priority > 5)
3846 return 0;
e6c15b5f 3847 return ~skb->priority >> 1 & 3;
d66cb37e 3848 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3849 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3850 return ~ntohs(veth->h_vlan_TCI) >>
3851 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3852 break;
c91a1fb7
JW		 3853 case QETH_PRIO_Q_ING_FIXED:
3854 return card->qdio.default_out_queue;
4a71df50 3855 default:
290b8348 3856 break;
4a71df50 3857 }
290b8348 3858 return card->qdio.default_out_queue;
4a71df50 3859}
4a71df50 3860
2863c613
EC		 3861/**
3862 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3863 * @skb: SKB address
3864 *
3865 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3866 * fragmented part of the SKB. Returns zero for linear SKB.
3867 */
356156b6 3868static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3869{
2863c613 3870 int cnt, elements = 0;
271648b4
FB		 3871
3872 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3873 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3874
3875 elements += qeth_get_elements_for_range(
3876 (addr_t)skb_frag_address(frag),
3877 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3878 }
3879 return elements;
3880}
271648b4 3881
40e6a225
JW		 3882/**
3883 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3884 * to transmit an skb.
3885 * @skb: the skb to operate on.
3886 * @data_offset: skip this part of the skb's linear data
3887 *
3888 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3889 * skb's data (both its linear part and paged fragments).
3890 */
a8c7629c
JW		 3891static unsigned int qeth_count_elements(struct sk_buff *skb,
3892 unsigned int data_offset)
ba86ceee
JW		 3893{
3894 unsigned int elements = qeth_get_elements_for_frags(skb);
3895 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3896 addr_t start = (addr_t)skb->data + data_offset;
3897
3898 if (start != end)
3899 elements += qeth_get_elements_for_range(start, end);
3900 return elements;
3901}
4a71df50 3902
e517b649
JW		 3903#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3904 MAX_TCP_HEADER)
55494264 3905
0d6f02d3 3906/**
ba86ceee 3907 * qeth_add_hw_header() - add a HW header to an skb.
56c5af25 3908 * @queue: TX queue that the skb will be placed on.
ba86ceee 3909 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3910 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3911 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3912 * @hdr_len: length of the HW header.
3913 * @proto_len: length of protocol headers that need to be in same page as the
3914 * HW header.
56c5af25 3915 * @elements: returns the required number of buffer elements for this skb.
0d6f02d3
JW		 3916 *
3917 * Returns the pushed length. If the header can't be pushed on
3918 * (eg. because it would cross a page boundary), it is allocated from
3919 * the cache instead and 0 is returned.
ba86ceee 3920 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3921 * Error to create the hdr is indicated by returning with < 0.
3922 */
b0abc4f5
JW		 3923static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3924 struct sk_buff *skb, struct qeth_hdr **hdr,
3925 unsigned int hdr_len, unsigned int proto_len,
3926 unsigned int *elements)
ba86ceee 3927{
b413ff8a 3928 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
a7c2f4a3 3929 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3930 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3931 unsigned int __elements;
3932 addr_t start, end;
3933 bool push_ok;
3934 int rc;
3935
3936check_layout:
a7c2f4a3 3937 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3938 end = (addr_t)skb->data;
3939
a7c2f4a3 3940 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3941 /* Push HW header into same page as first protocol header. */
3942 push_ok = true;
e517b649
JW		 3943 /* ... but TSO always needs a separate element for headers: */
3944 if (skb_is_gso(skb))
3945 __elements = 1 + qeth_count_elements(skb, proto_len);
3946 else
3947 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3948 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3949 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3950 push_ok = true;
ba86ceee 3951 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3952 } else {
3953 /* Use header cache, copy protocol headers up. */
3954 push_ok = false;
3955 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3956 }
3957
3958 /* Compress skb to fit into one IO buffer: */
3959 if (__elements > max_elements) {
3960 if (!skb_is_nonlinear(skb)) {
3961 /* Drop it, no easy way of shrinking it further. */
3962 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3963 max_elements, __elements, skb->len);
3964 return -E2BIG;
3965 }
3966
3967 rc = skb_linearize(skb);
b0abc4f5
JW		 3968 if (rc) {
3969 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 3970 return rc;
b0abc4f5 3971 }
ba86ceee 3972
b0abc4f5 3973 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 3974 /* Linearization changed the layout, re-evaluate: */
3975 goto check_layout;
3976 }
3977
3978 *elements = __elements;
3979 /* Add the header: */
3980 if (push_ok) {
a7c2f4a3
JW		 3981 *hdr = skb_push(skb, hdr_len);
3982 return hdr_len;
0d6f02d3 3983 }
b413ff8a
JW		 3984
3985 /* Fall back to cache element with known-good alignment: */
55494264
JW		 3986 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3987 return -E2BIG;
b413ff8a 3988 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
0d6f02d3
JW		 3989 if (!*hdr)
3990 return -ENOMEM;
a7c2f4a3
JW		 3991 /* Copy protocol headers behind HW header: */
3992 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 3993 return 0;
3994}
0d6f02d3 3995
9549d70a 3996static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 3997 struct sk_buff *curr_skb,
3998 struct qeth_hdr *curr_hdr)
3999{
8b664cd1 4000 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 4001 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4002
4003 if (!prev_hdr)
4004 return true;
4005
4006 /* All packets must have the same target: */
4007 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4008 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4009
4010 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4011 eth_hdr(curr_skb)->h_dest) &&
4012 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4013 }
4014
4015 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4016 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4017}
4018
fff1aceb
JW		 4019/**
4020 * qeth_fill_buffer() - map skb into an output buffer
4021 * @buf: buffer to transport the skb
4022 * @skb: skb to map into the buffer
4023 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4024 * from qeth_core_header_cache.
4025 * @offset: when mapping the skb, start at skb->data + offset
4026 * @hd_len: if > 0, build a dedicated header element of this size
4027 */
4028static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4029 struct sk_buff *skb, struct qeth_hdr *hdr,
4030 unsigned int offset, unsigned int hd_len)
4a71df50 4031{
384d2ef1
JW		 4032 struct qdio_buffer *buffer = buf->buffer;
4033 int element = buf->next_element_to_fill;
cc309f83
JW		 4034 int length = skb_headlen(skb) - offset;
4035 char *data = skb->data + offset;
4e2fe4ed 4036 unsigned int elem_length, cnt;
fff1aceb
JW		 4037 bool is_first_elem = true;
4038
4039 __skb_queue_tail(&buf->skb_list, skb);
4040
4041 /* build dedicated element for HW Header */
4042 if (hd_len) {
4043 is_first_elem = false;
4044
4045 buffer->element[element].addr = virt_to_phys(hdr);
4046 buffer->element[element].length = hd_len;
4047 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
a875fd16
JW		 4048
4049 /* HW header is allocated from cache: */
4050 if ((void *)hdr != skb->data)
bb7032dd 4051 __set_bit(element, buf->from_kmem_cache);
a875fd16
JW		 4052 /* HW header was pushed and is contiguous with linear part: */
4053 else if (length > 0 && !PAGE_ALIGNED(data) &&
4054 (data == (char *)hdr + hd_len))
4055 buffer->element[element].eflags |=
4056 SBAL_EFLAGS_CONTIGUOUS;
4057
fff1aceb
JW		 4058 element++;
4059 }
4a71df50 4060
cc309f83 4061 /* map linear part into buffer element(s) */
4a71df50 4062 while (length > 0) {
4e2fe4ed
JW		 4063 elem_length = min_t(unsigned int, length,
4064 PAGE_SIZE - offset_in_page(data));
4a71df50 4065
2db01da8 4066 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed
JW		 4067 buffer->element[element].length = elem_length;
4068 length -= elem_length;
384d2ef1
JW		 4069 if (is_first_elem) {
4070 is_first_elem = false;
5258830b
JW		 4071 if (length || skb_is_nonlinear(skb))
4072 /* skb needs additional elements */
3ec90878 4073 buffer->element[element].eflags =
5258830b 4074 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 4075 else
5258830b
JW		 4076 buffer->element[element].eflags = 0;
4077 } else {
4078 buffer->element[element].eflags =
4079 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 4080 }
4e2fe4ed
JW		 4081
4082 data += elem_length;
4a71df50 4083 element++;
4a71df50 4084 }
51aa165c 4085
cc309f83 4086 /* map page frags into buffer element(s) */
51aa165c 4087 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 4088 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4089
4090 data = skb_frag_address(frag);
4091 length = skb_frag_size(frag);
271648b4 4092 while (length > 0) {
4e2fe4ed
JW		 4093 elem_length = min_t(unsigned int, length,
4094 PAGE_SIZE - offset_in_page(data));
271648b4 4095
2db01da8 4096 buffer->element[element].addr = virt_to_phys(data);
4e2fe4ed 4097 buffer->element[element].length = elem_length;
271648b4
FB		 4098 buffer->element[element].eflags =
4099 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 4100
4101 length -= elem_length;
4102 data += elem_length;
271648b4
FB		 4103 element++;
4104 }
51aa165c
FB		 4105 }
4106
3ec90878
JG		 4107 if (buffer->element[element - 1].eflags)
4108 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 4109 buf->next_element_to_fill = element;
9549d70a 4110 return element;
4a71df50
FB		 4111}
4112
9549d70a
JW		 4113static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4114 struct sk_buff *skb, unsigned int elements,
4115 struct qeth_hdr *hdr, unsigned int offset,
4116 unsigned int hd_len)
4a71df50 4117{
96bd6c94 4118 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 4119 struct qeth_qdio_out_buffer *buffer;
9549d70a 4120 unsigned int next_element;
54a50941
JW		 4121 struct netdev_queue *txq;
4122 bool stopped = false;
9549d70a
JW		 4123 bool flush;
4124
8b664cd1 4125 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 4126 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 4127
54a50941
JW		 4128 /* Just a sanity check, the wake/stop logic should ensure that we always
4129 * get a free buffer.
4a71df50
FB		 4130 */
4131 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 4132 return -EBUSY;
54a50941 4133
8b664cd1
JW		 4134 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4135
4136 if (flush ||
4137 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4138 if (buffer->next_element_to_fill > 0) {
4139 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4140 queue->bulk_count++;
4141 }
4142
4143 if (queue->bulk_count >= queue->bulk_max)
4144 flush = true;
4145
4146 if (flush)
4147 qeth_flush_queue(queue);
4148
4149 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4150 queue->bulk_count)];
54a50941 4151
9549d70a
JW		 4152 /* Sanity-check again: */
4153 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4154 return -EBUSY;
4155 }
4156
4157 if (buffer->next_element_to_fill == 0 &&
4158 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 4159 /* If a TX completion happens right _here_ and misses to wake
4160 * the txq, then our re-check below will catch the race.
4161 */
4162 QETH_TXQ_STAT_INC(queue, stopped);
4163 netif_tx_stop_queue(txq);
4164 stopped = true;
4165 }
4166
9549d70a 4167 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 4168 buffer->bytes += bytes;
1ab2f8c6 4169 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a 4170 queue->prev_hdr = hdr;
96bd6c94 4171
9549d70a
JW		 4172 flush = __netdev_tx_sent_queue(txq, bytes,
4173 !stopped && netdev_xmit_more());
4174
4175 if (flush || next_element >= queue->max_elements) {
4176 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 4177 queue->bulk_count++;
4178
4179 if (queue->bulk_count >= queue->bulk_max)
4180 flush = true;
4181
4182 if (flush)
4183 qeth_flush_queue(queue);
9549d70a 4184 }
54a50941
JW		 4185
4186 if (stopped && !qeth_out_queue_is_full(queue))
4187 netif_tx_start_queue(txq);
4a71df50 4188 return 0;
4a71df50 4189}
4a71df50 4190
a8c7629c
JW		 4191static int qeth_do_send_packet(struct qeth_card *card,
4192 struct qeth_qdio_out_q *queue,
4193 struct sk_buff *skb, struct qeth_hdr *hdr,
4194 unsigned int offset, unsigned int hd_len,
4195 unsigned int elements_needed)
4a71df50 4196{
a1668474 4197 unsigned int start_index = queue->next_buf_to_fill;
4a71df50 4198 struct qeth_qdio_out_buffer *buffer;
9549d70a 4199 unsigned int next_element;
54a50941
JW		 4200 struct netdev_queue *txq;
4201 bool stopped = false;
4a71df50
FB		 4202 int flush_count = 0;
4203 int do_pack = 0;
4a71df50
FB		 4204 int rc = 0;
4205
0da9581d 4206 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4207
4208 /* Just a sanity check, the wake/stop logic should ensure that we always
4209 * get a free buffer.
4a71df50 4210 */
a1668474 4211 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4a71df50 4212 return -EBUSY;
54a50941
JW		 4213
4214 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4215
4a71df50
FB		 4216 /* check if we need to switch packing state of this queue */
4217 qeth_switch_to_packing_if_needed(queue);
4218 if (queue->do_pack) {
4219 do_pack = 1;
64ef8957 4220 /* does packet fit in current buffer? */
4e26c5fe
JW		 4221 if (buffer->next_element_to_fill + elements_needed >
4222 queue->max_elements) {
64ef8957
FB		 4223 /* ... no -> set state PRIMED */
4224 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4225 flush_count++;
4226 queue->next_buf_to_fill =
ec2b559d 4227 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 4228 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4229
4230 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 4231 if (atomic_read(&buffer->state) !=
4232 QETH_QDIO_BUF_EMPTY) {
4233 qeth_flush_buffers(queue, start_index,
779e6e1c 4234 flush_count);
3cdc8a25
JW		 4235 rc = -EBUSY;
4236 goto out;
4a71df50
FB		 4237 }
4238 }
4239 }
f72b4644 4240
54a50941
JW		 4241 if (buffer->next_element_to_fill == 0 &&
4242 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4243 /* If a TX completion happens right _here_ and misses to wake
4244 * the txq, then our re-check below will catch the race.
4245 */
4246 QETH_TXQ_STAT_INC(queue, stopped);
4247 netif_tx_stop_queue(txq);
4248 stopped = true;
4249 }
4250
9549d70a 4251 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
1ab2f8c6
JW		 4252 buffer->bytes += qdisc_pkt_len(skb);
4253 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a
JW		 4254
4255 if (queue->do_pack)
4256 QETH_TXQ_STAT_INC(queue, skbs_pack);
4257 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4258 flush_count++;
4259 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 4260 queue->next_buf_to_fill =
4261 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 4262 }
4263
4a71df50 4264 if (flush_count)
779e6e1c 4265 qeth_flush_buffers(queue, start_index, flush_count);
a1668474 4266
3cdc8a25 4267out:
b0abc4f5
JW		 4268 if (do_pack)
4269 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4270
54a50941
JW		 4271 if (stopped && !qeth_out_queue_is_full(queue))
4272 netif_tx_start_queue(txq);
4a71df50
FB		 4273 return rc;
4274}
4a71df50 4275
81ec5439
JW		 4276static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4277 unsigned int payload_len, struct sk_buff *skb,
4278 unsigned int proto_len)
82bf5c08
JW		 4279{
4280 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4281
4282 ext->hdr_tot_len = sizeof(*ext);
4283 ext->imb_hdr_no = 1;
4284 ext->hdr_type = 1;
4285 ext->hdr_version = 1;
4286 ext->hdr_len = 28;
4287 ext->payload_len = payload_len;
4288 ext->mss = skb_shinfo(skb)->gso_size;
4289 ext->dg_hdr_len = proto_len;
4290}
82bf5c08 4291
fc69660b 4292int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
17f3a8b5 4293 struct qeth_qdio_out_q *queue, __be16 proto,
b0abc4f5
JW		 4294 void (*fill_header)(struct qeth_qdio_out_q *queue,
4295 struct qeth_hdr *hdr, struct sk_buff *skb,
17f3a8b5 4296 __be16 proto, unsigned int data_len))
fc69660b 4297{
82bf5c08 4298 unsigned int proto_len, hw_hdr_len;
fc69660b 4299 unsigned int frame_len = skb->len;
82bf5c08 4300 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4301 unsigned int data_offset = 0;
4302 struct qeth_hdr *hdr = NULL;
4303 unsigned int hd_len = 0;
4304 unsigned int elements;
4305 int push_len, rc;
fc69660b 4306
82bf5c08
JW		 4307 if (is_tso) {
4308 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4309 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4310 } else {
4311 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4312 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4313 }
4314
fc69660b
JW		 4315 rc = skb_cow_head(skb, hw_hdr_len);
4316 if (rc)
4317 return rc;
4318
b0abc4f5 4319 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4320 &elements);
4321 if (push_len < 0)
4322 return push_len;
82bf5c08 4323 if (is_tso || !push_len) {
fc69660b
JW		 4324 /* HW header needs its own buffer element. */
4325 hd_len = hw_hdr_len + proto_len;
82bf5c08 4326 data_offset = push_len + proto_len;
fc69660b 4327 }
e517b649 4328 memset(hdr, 0, hw_hdr_len);
17f3a8b5 4329 fill_header(queue, hdr, skb, proto, frame_len);
82bf5c08
JW		 4330 if (is_tso)
4331 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4332 frame_len - proto_len, skb, proto_len);
fc69660b 4333
fc69660b 4334 if (IS_IQD(card)) {
9549d70a
JW		 4335 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4336 hd_len);
fc69660b
JW		 4337 } else {
4338 /* TODO: drop skb_orphan() once TX completion is fast enough */
4339 skb_orphan(skb);
a1668474 4340 spin_lock(&queue->lock);
fc69660b
JW		 4341 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4342 hd_len, elements);
a1668474 4343 spin_unlock(&queue->lock);
fc69660b
JW		 4344 }
4345
eeac0e20
JW		 4346 if (rc && !push_len)
4347 kmem_cache_free(qeth_core_header_cache, hdr);
4348
fc69660b
JW		 4349 return rc;
4350}
4351EXPORT_SYMBOL_GPL(qeth_xmit);
4352
4a71df50
FB		 4353static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4354 struct qeth_reply *reply, unsigned long data)
4355{
686c97ee 4356 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4357 struct qeth_ipacmd_setadpparms *setparms;
4358
847a50fd 4359 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4360
4a71df50 4361 setparms = &(cmd->data.setadapterparms);
686c97ee 4362 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4363 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4364 setparms->data.mode = SET_PROMISC_MODE_OFF;
4365 }
4366 card->info.promisc_mode = setparms->data.mode;
742d4d40 4367 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4368}
4369
59b757a9 4370void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4371{
59b757a9
JW		 4372 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4373 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4374 struct qeth_cmd_buffer *iob;
4375 struct qeth_ipa_cmd *cmd;
4376
847a50fd 4377 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4378 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4379
4380 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4381 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4382 if (!iob)
4383 return;
ff5caa7a 4384 cmd = __ipa_cmd(iob);
4a71df50
FB		 4385 cmd->data.setadapterparms.data.mode = mode;
4386 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4387}
4388EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4389
4a71df50
FB		 4390static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4391 struct qeth_reply *reply, unsigned long data)
4392{
686c97ee 4393 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4394 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4395
847a50fd 4396 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4397 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4398 return -EIO;
4a71df50 4399
b144b99f 4400 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4401 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4402 return -EADDRNOTAVAIL;
4403
b144b99f
JW		 4404 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4405 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4406 return -EADDRNOTAVAIL;
b144b99f 4407
978bb0ae 4408 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4409 return 0;
4410}
4411
4412int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4413{
4414 int rc;
4415 struct qeth_cmd_buffer *iob;
4416 struct qeth_ipa_cmd *cmd;
4417
847a50fd 4418 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4419
4420 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4421 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4422 if (!iob)
4423 return -ENOMEM;
ff5caa7a 4424 cmd = __ipa_cmd(iob);
4a71df50 4425 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4426 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4427 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4428 card->dev->dev_addr);
4a71df50
FB		 4429 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4430 NULL);
4431 return rc;
4432}
4433EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4434
d64ecc22
EL		 4435static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4436 struct qeth_reply *reply, unsigned long data)
4437{
686c97ee 4438 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4439 struct qeth_set_access_ctrl *access_ctrl_req;
d64ecc22 4440
847a50fd 4441 QETH_CARD_TEXT(card, 4, "setaccb");
d64ecc22 4442
d64ecc22 4443 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4444 QETH_CARD_TEXT_(card, 2, "rc=%d",
4445 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4446 if (cmd->data.setadapterparms.hdr.return_code !=
4447 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4448 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4449 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4450 cmd->data.setadapterparms.hdr.return_code);
e2dfcfba 4451 switch (qeth_setadpparms_inspect_rc(cmd)) {
d64ecc22 4452 case SET_ACCESS_CTRL_RC_SUCCESS:
65878fd9 4453 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
d64ecc22
EL		 4454 dev_info(&card->gdev->dev,
4455 "QDIO data connection isolation is deactivated\n");
65878fd9 4456 else
d64ecc22
EL		 4457 dev_info(&card->gdev->dev,
4458 "QDIO data connection isolation is activated\n");
65878fd9 4459 return 0;
0f54761d 4460 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4461 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4462 CARD_DEVID(card));
65878fd9 4463 return 0;
0f54761d 4464 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4465 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4466 CARD_DEVID(card));
65878fd9 4467 return 0;
d64ecc22 4468 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4469 dev_err(&card->gdev->dev, "Adapter does not "
4470 "support QDIO data connection isolation\n");
65878fd9 4471 return -EOPNOTSUPP;
d64ecc22 4472 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4473 dev_err(&card->gdev->dev,
4474 "Adapter is dedicated. "
4475 "QDIO data connection isolation not supported\n");
65878fd9 4476 return -EOPNOTSUPP;
d64ecc22 4477 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4478 dev_err(&card->gdev->dev,
4479 "TSO does not permit QDIO data connection isolation\n");
65878fd9 4480 return -EPERM;
0f54761d
SR		 4481 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4482 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4483 "support reflective relay mode\n");
65878fd9 4484 return -EOPNOTSUPP;
0f54761d
SR		 4485 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4486 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4487 "enabled at the adjacent switch port");
65878fd9 4488 return -EREMOTEIO;
0f54761d
SR		 4489 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4490 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4491 "at the adjacent switch failed\n");
65878fd9
JW		 4492 /* benign error while disabling ISOLATION_MODE_FWD */
4493 return 0;
d64ecc22 4494 default:
65878fd9 4495 return -EIO;
d64ecc22 4496 }
d64ecc22
EL		 4497}
4498
65878fd9
JW		 4499int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4500 enum qeth_ipa_isolation_modes mode)
d64ecc22
EL		 4501{
4502 int rc;
4503 struct qeth_cmd_buffer *iob;
4504 struct qeth_ipa_cmd *cmd;
4505 struct qeth_set_access_ctrl *access_ctrl_req;
4506
847a50fd 4507 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4508
65878fd9
JW		 4509 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4510 dev_err(&card->gdev->dev,
4511 "Adapter does not support QDIO data connection isolation\n");
4512 return -EOPNOTSUPP;
4513 }
4514
d64ecc22 4515 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4516 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4517 if (!iob)
4518 return -ENOMEM;
ff5caa7a 4519 cmd = __ipa_cmd(iob);
d64ecc22 4520 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
65878fd9 4521 access_ctrl_req->subcmd_code = mode;
d64ecc22
EL		 4522
4523 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
65878fd9 4524 NULL);
62f0379c 4525 if (rc) {
65878fd9 4526 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
62f0379c
JW		 4527 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4528 rc, CARD_DEVID(card));
d64ecc22 4529 }
65878fd9 4530
d64ecc22
EL		 4531 return rc;
4532}
d64ecc22 4533
0290bd29 4534void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4a71df50
FB		 4535{
4536 struct qeth_card *card;
4537
509e2562 4538 card = dev->ml_priv;
847a50fd 4539 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4540 qeth_schedule_recovery(card);
4541}
4542EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4543
942d6984 4544static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4545{
509e2562 4546 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4547 int rc = 0;
4548
4549 switch (regnum) {
4550 case MII_BMCR: /* Basic mode control register */
4551 rc = BMCR_FULLDPLX;
4552 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
54e049c2
JW		 4553 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4554 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4555 rc |= BMCR_SPEED100;
4556 break;
4557 case MII_BMSR: /* Basic mode status register */
4558 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4559 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4560 BMSR_100BASE4;
4561 break;
4562 case MII_PHYSID1: /* PHYS ID 1 */
4563 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4564 dev->dev_addr[2];
4565 rc = (rc >> 5) & 0xFFFF;
4566 break;
4567 case MII_PHYSID2: /* PHYS ID 2 */
4568 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4569 break;
4570 case MII_ADVERTISE: /* Advertisement control reg */
4571 rc = ADVERTISE_ALL;
4572 break;
4573 case MII_LPA: /* Link partner ability reg */
4574 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4575 LPA_100BASE4 | LPA_LPACK;
4576 break;
4577 case MII_EXPANSION: /* Expansion register */
4578 break;
4579 case MII_DCOUNTER: /* disconnect counter */
4580 break;
4581 case MII_FCSCOUNTER: /* false carrier counter */
4582 break;
4583 case MII_NWAYTEST: /* N-way auto-neg test register */
4584 break;
4585 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4586 rc = card->stats.rx_length_errors +
4587 card->stats.rx_frame_errors +
4588 card->stats.rx_fifo_errors;
4a71df50
FB		 4589 break;
4590 case MII_SREVISION: /* silicon revision */
4591 break;
4592 case MII_RESV1: /* reserved 1 */
4593 break;
4594 case MII_LBRERROR: /* loopback, rx, bypass error */
4595 break;
4596 case MII_PHYADDR: /* physical address */
4597 break;
4598 case MII_RESV2: /* reserved 2 */
4599 break;
4600 case MII_TPISTATUS: /* TPI status for 10mbps */
4601 break;
4602 case MII_NCONFIG: /* network interface config */
4603 break;
4604 default:
4605 break;
4606 }
4607 return rc;
4608}
4a71df50 4609
4a71df50 4610static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4611 struct qeth_reply *reply, unsigned long data)
4a71df50 4612{
7c5f8ffb
JW		 4613 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4614 struct qeth_arp_query_info *qinfo = reply->param;
4615 struct qeth_ipacmd_setadpparms *adp_cmd;
4616 unsigned int data_len;
9a764c1e 4617 void *snmp_data;
4a71df50 4618
847a50fd 4619 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4620
4a71df50 4621 if (cmd->hdr.return_code) {
8a593148 4622 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4623 return -EIO;
4a71df50
FB		 4624 }
4625 if (cmd->data.setadapterparms.hdr.return_code) {
4626 cmd->hdr.return_code =
4627 cmd->data.setadapterparms.hdr.return_code;
8a593148 4628 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4629 return -EIO;
4a71df50 4630 }
7c5f8ffb
JW		 4631
4632 adp_cmd = &cmd->data.setadapterparms;
4633 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4634 if (adp_cmd->hdr.seq_no == 1) {
4635 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4636 } else {
7c5f8ffb
JW		 4637 snmp_data = &adp_cmd->data.snmp.request;
4638 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4639 }
4a71df50
FB		 4640
4641 /* check if there is enough room in userspace */
4642 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4643 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4644 return -ENOSPC;
4a71df50 4645 }
847a50fd 4646 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4647 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4648 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4649 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4650 /*copy entries to user buffer*/
9a764c1e 4651 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4652 qinfo->udata_offset += data_len;
9a764c1e 4653
4a71df50
FB		 4654 if (cmd->data.setadapterparms.hdr.seq_no <
4655 cmd->data.setadapterparms.hdr.used_total)
4656 return 1;
4657 return 0;
4658}
4659
942d6984 4660static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4661{
d4c08afa 4662 struct qeth_snmp_ureq __user *ureq;
4a71df50 4663 struct qeth_cmd_buffer *iob;
6fb392b1 4664 unsigned int req_len;
4a71df50
FB		 4665 struct qeth_arp_query_info qinfo = {0, };
4666 int rc = 0;
4667
847a50fd 4668 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4669
379ac99e 4670 if (IS_VM_NIC(card))
4a71df50
FB		 4671 return -EOPNOTSUPP;
4672
4673 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4674 IS_LAYER3(card))
4a71df50 4675 return -EOPNOTSUPP;
4fda3354 4676
d4c08afa
JW		 4677 ureq = (struct qeth_snmp_ureq __user *) udata;
4678 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4679 get_user(req_len, &ureq->hdr.req_len))
4680 return -EFAULT;
4681
292a50e3
JW		 4682 /* Sanitize user input, to avoid overflows in iob size calculation: */
4683 if (req_len > QETH_BUFSIZE)
4684 return -EINVAL;
4685
d4c08afa
JW		 4686 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4687 if (!iob)
4688 return -ENOMEM;
4689
4690 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4691 &ureq->cmd, req_len)) {
4692 qeth_put_cmd(iob);
4a71df50 4693 return -EFAULT;
d4c08afa
JW		 4694 }
4695
4a71df50
FB		 4696 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4697 if (!qinfo.udata) {
d4c08afa 4698 qeth_put_cmd(iob);
4a71df50
FB		 4699 return -ENOMEM;
4700 }
4701 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4702
c2153277 4703 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4704 if (rc)
e19e5be8
JW		 4705 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4706 CARD_DEVID(card), rc);
4a71df50
FB		 4707 else {
4708 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4709 rc = -EFAULT;
4710 }
d4c08afa 4711
4a71df50
FB		 4712 kfree(qinfo.udata);
4713 return rc;
4714}
4a71df50 4715
c3ab96f3 4716static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4b2eee35
JW		 4717 struct qeth_reply *reply,
4718 unsigned long data)
c3ab96f3 4719{
686c97ee 4720 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4b2eee35 4721 struct qeth_qoat_priv *priv = reply->param;
c3ab96f3
FB		 4722 int resdatalen;
4723
4724 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4725 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4726 return -EIO;
c3ab96f3 4727
c3ab96f3 4728 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
c3ab96f3 4729
4b7ae122
JW		 4730 if (resdatalen > (priv->buffer_len - priv->response_len))
4731 return -ENOSPC;
c3ab96f3 4732
f7ec2d2a
JW		 4733 memcpy(priv->buffer + priv->response_len,
4734 &cmd->data.setadapterparms.hdr, resdatalen);
c3ab96f3
FB		 4735 priv->response_len += resdatalen;
4736
4737 if (cmd->data.setadapterparms.hdr.seq_no <
4738 cmd->data.setadapterparms.hdr.used_total)
4739 return 1;
4740 return 0;
4741}
4742
942d6984 4743static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4744{
4745 int rc = 0;
4746 struct qeth_cmd_buffer *iob;
4747 struct qeth_ipa_cmd *cmd;
4748 struct qeth_query_oat *oat_req;
4749 struct qeth_query_oat_data oat_data;
4750 struct qeth_qoat_priv priv;
4751 void __user *tmp;
4752
4753 QETH_CARD_TEXT(card, 3, "qoatcmd");
4754
4b2eee35
JW		 4755 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4756 return -EOPNOTSUPP;
c3ab96f3 4757
4b2eee35
JW		 4758 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4759 return -EFAULT;
c3ab96f3
FB		 4760
4761 priv.buffer_len = oat_data.buffer_len;
4762 priv.response_len = 0;
aec45e85 4763 priv.buffer = vzalloc(oat_data.buffer_len);
4b2eee35
JW		 4764 if (!priv.buffer)
4765 return -ENOMEM;
c3ab96f3
FB		 4766
4767 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4768 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4769 if (!iob) {
4770 rc = -ENOMEM;
4771 goto out_free;
4772 }
ff5caa7a 4773 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4774 oat_req = &cmd->data.setadapterparms.data.query_oat;
4775 oat_req->subcmd_code = oat_data.command;
4776
4b2eee35 4777 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
c3ab96f3 4778 if (!rc) {
2ccd31f8
JW		 4779 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4780 u64_to_user_ptr(oat_data.ptr);
c3ab96f3
FB		 4781 oat_data.response_len = priv.response_len;
4782
4b2eee35
JW		 4783 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4784 copy_to_user(udata, &oat_data, sizeof(oat_data)))
c3ab96f3 4785 rc = -EFAULT;
4b7ae122 4786 }
c3ab96f3
FB		 4787
4788out_free:
aec45e85 4789 vfree(priv.buffer);
c3ab96f3
FB		 4790 return rc;
4791}
c3ab96f3 4792
e92d42e7
JW		 4793static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4794 struct qeth_reply *reply_priv,
4795 unsigned long data)
4796{
4797 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4798 struct qeth_link_info *link_info = reply_priv->param;
4799 struct qeth_query_oat_physical_if *phys_if;
4800 struct qeth_query_oat_reply *reply;
4801
7a07a29e 4802 QETH_CARD_TEXT(card, 2, "qoatincb");
e92d42e7
JW		 4803 if (qeth_setadpparms_inspect_rc(cmd))
4804 return -EIO;
4805
4806 /* Multi-part reply is unexpected, don't bother: */
4807 if (cmd->data.setadapterparms.hdr.used_total > 1)
4808 return -EINVAL;
4809
4810 /* Expect the reply to start with phys_if data: */
4811 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4812 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4813 reply->length < sizeof(*reply))
4814 return -EINVAL;
4815
4816 phys_if = &reply->phys_if;
4817
4818 switch (phys_if->speed_duplex) {
4819 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4820 link_info->speed = SPEED_10;
4821 link_info->duplex = DUPLEX_HALF;
4822 break;
4823 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4824 link_info->speed = SPEED_10;
4825 link_info->duplex = DUPLEX_FULL;
4826 break;
4827 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4828 link_info->speed = SPEED_100;
4829 link_info->duplex = DUPLEX_HALF;
4830 break;
4831 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4832 link_info->speed = SPEED_100;
4833 link_info->duplex = DUPLEX_FULL;
4834 break;
4835 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4836 link_info->speed = SPEED_1000;
4837 link_info->duplex = DUPLEX_HALF;
4838 break;
4839 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4840 link_info->speed = SPEED_1000;
4841 link_info->duplex = DUPLEX_FULL;
4842 break;
4843 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4844 link_info->speed = SPEED_10000;
4845 link_info->duplex = DUPLEX_FULL;
4846 break;
4847 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4848 link_info->speed = SPEED_25000;
4849 link_info->duplex = DUPLEX_FULL;
4850 break;
4851 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4852 default:
4853 link_info->speed = SPEED_UNKNOWN;
4854 link_info->duplex = DUPLEX_UNKNOWN;
4855 break;
4856 }
4857
4858 switch (phys_if->media_type) {
4859 case QETH_QOAT_PHYS_MEDIA_COPPER:
4860 link_info->port = PORT_TP;
235db527 4861 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4862 break;
4863 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
235db527
JW		 4864 link_info->port = PORT_FIBRE;
4865 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4866 break;
e92d42e7
JW		 4867 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4868 link_info->port = PORT_FIBRE;
235db527 4869 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
e92d42e7
JW		 4870 break;
4871 default:
4872 link_info->port = PORT_OTHER;
235db527 4873 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4874 break;
4875 }
4876
4877 return 0;
4878}
4879
baf7998d
JW		 4880static void qeth_init_link_info(struct qeth_card *card)
4881{
7a07a29e 4882 qeth_default_link_info(card);
e92d42e7
JW		 4883
4884 /* Get more accurate data via QUERY OAT: */
4885 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4886 struct qeth_link_info link_info;
4887 struct qeth_cmd_buffer *iob;
4888
4889 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4890 SETADP_DATA_SIZEOF(query_oat));
4891 if (iob) {
4892 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4893 struct qeth_query_oat *oat_req;
4894
4895 oat_req = &cmd->data.setadapterparms.data.query_oat;
4896 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4897
4898 if (!qeth_send_ipa_cmd(card, iob,
4899 qeth_init_link_info_oat_cb,
4900 &link_info)) {
4901 if (link_info.speed != SPEED_UNKNOWN)
4902 card->info.link_info.speed = link_info.speed;
4903 if (link_info.duplex != DUPLEX_UNKNOWN)
4904 card->info.link_info.duplex = link_info.duplex;
4905 if (link_info.port != PORT_OTHER)
4906 card->info.link_info.port = link_info.port;
235db527
JW		 4907 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4908 card->info.link_info.link_mode = link_info.link_mode;
e92d42e7
JW		 4909 }
4910 }
4911 }
baf7998d
JW		 4912}
4913
ec61bd2f
JW		 4914/**
4915 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4916 * @card: pointer to a qeth_card
4917 *
4918 * Returns
4919 * 0, if a MAC address has been set for the card's netdevice
4920 * a return code, for various error conditions
4921 */
4922int qeth_vm_request_mac(struct qeth_card *card)
4923{
4924 struct diag26c_mac_resp *response;
4925 struct diag26c_mac_req *request;
ec61bd2f
JW		 4926 int rc;
4927
57a688aa 4928 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 4929
ec61bd2f
JW		 4930 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4931 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4932 if (!request || !response) {
4933 rc = -ENOMEM;
4934 goto out;
4935 }
4936
ec61bd2f
JW		 4937 request->resp_buf_len = sizeof(*response);
4938 request->resp_version = DIAG26C_VERSION2;
4939 request->op_code = DIAG26C_GET_MAC;
fa115adf 4940 request->devno = card->info.ddev_devno;
ec61bd2f 4941
615dff22 4942 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 4943 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 4944 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 4945 if (rc)
4946 goto out;
615dff22 4947 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 4948
4949 if (request->resp_buf_len < sizeof(*response) ||
4950 response->version != request->resp_version) {
4951 rc = -EIO;
57a688aa
JW		 4952 QETH_CARD_TEXT(card, 2, "badresp");
4953 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4954 sizeof(request->resp_buf_len));
ec61bd2f
JW		 4955 } else if (!is_valid_ether_addr(response->mac)) {
4956 rc = -EINVAL;
57a688aa
JW		 4957 QETH_CARD_TEXT(card, 2, "badmac");
4958 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f 4959 } else {
978bb0ae 4960 eth_hw_addr_set(card->dev, response->mac);
ec61bd2f
JW		 4961 }
4962
4963out:
4964 kfree(response);
4965 kfree(request);
4966 return rc;
4967}
4968EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4969
d0ff1f52
UB		 4970static void qeth_determine_capabilities(struct qeth_card *card)
4971{
f9e50b02
JW		 4972 struct qeth_channel *channel = &card->data;
4973 struct ccw_device *ddev = channel->ccwdev;
d0ff1f52 4974 int rc;
d0ff1f52
UB		 4975 int ddev_offline = 0;
4976
57a688aa 4977 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 4978 if (!ddev->online) {
4979 ddev_offline = 1;
871602b1 4980 rc = qeth_start_channel(channel);
d0ff1f52 4981 if (rc) {
57a688aa 4982 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 4983 goto out;
4984 }
4985 }
4986
2066e1db 4987 rc = qeth_read_conf_data(card);
d0ff1f52 4988 if (rc) {
e19e5be8
JW		 4989 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4990 CARD_DEVID(card), rc);
57a688aa 4991 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 4992 goto out_offline;
4993 }
d0ff1f52
UB		 4994
4995 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4996 if (rc)
57a688aa 4997 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 4998
57a688aa
JW		 4999 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5000 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5001 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5002 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5003 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 5004 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5005 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5006 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5007 dev_info(&card->gdev->dev,
5008 "Completion Queueing supported\n");
5009 } else {
5010 card->options.cq = QETH_CQ_NOTAVAILABLE;
5011 }
5012
d0ff1f52
UB		 5013out_offline:
5014 if (ddev_offline == 1)
f9e50b02 5015 qeth_stop_channel(channel);
d0ff1f52
UB		 5016out:
5017 return;
5018}
5019
fa115adf
AW		 5020static void qeth_read_ccw_conf_data(struct qeth_card *card)
5021{
5022 struct qeth_card_info *info = &card->info;
5023 struct ccw_device *cdev = CARD_DDEV(card);
5024 struct ccw_dev_id dev_id;
5025
5026 QETH_CARD_TEXT(card, 2, "ccwconfd");
5027 ccw_device_get_id(cdev, &dev_id);
5028
5029 info->ddev_devno = dev_id.devno;
5030 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5031 !ccw_device_get_iid(cdev, &info->iid) &&
5032 !ccw_device_get_chid(cdev, 0, &info->chid);
5033 info->ssid = dev_id.ssid;
5034
5035 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5036 info->chid, info->chpid);
5037
5038 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5039 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5040 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5041 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5042 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5043 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5044 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5045}
5046
4a71df50
FB		 5047static int qeth_qdio_establish(struct qeth_card *card)
5048{
d8564e19
JW		 5049 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5050 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
72d5e850 5051 struct qeth_qib_parms *qib_parms = NULL;
4a71df50 5052 struct qdio_initialize init_data;
dc15012b 5053 unsigned int no_input_qs = 1;
d8564e19 5054 unsigned int i;
4a71df50
FB		 5055 int rc = 0;
5056
57a688aa 5057 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 5058
72d5e850
JW		 5059 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5060 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5061 if (!qib_parms)
5062 return -ENOMEM;
4a71df50 5063
72d5e850
JW		 5064 qeth_fill_qib_parms(card, qib_parms);
5065 }
4a71df50 5066
d8564e19 5067 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
dc15012b 5068 if (card->options.cq == QETH_CQ_ENABLED) {
d8564e19 5069 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
dc15012b
JW		 5070 no_input_qs++;
5071 }
e9091ffd 5072
d8564e19
JW		 5073 for (i = 0; i < card->qdio.no_out_queues; i++)
5074 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
4a71df50
FB		 5075
5076 memset(&init_data, 0, sizeof(struct qdio_initialize));
379ac99e
JW		 5077 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5078 QDIO_QETH_QFMT;
4a71df50 5079 init_data.qib_param_field_format = 0;
72d5e850 5080 init_data.qib_param_field = (void *)qib_parms;
dc15012b 5081 init_data.no_input_qs = no_input_qs;
4a71df50 5082 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 5083 init_data.input_handler = qeth_qdio_input_handler;
5084 init_data.output_handler = qeth_qdio_output_handler;
0a6e6345 5085 init_data.irq_poll = qeth_qdio_poll;
4a71df50 5086 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 5087 init_data.input_sbal_addr_array = in_sbal_ptrs;
5088 init_data.output_sbal_addr_array = out_sbal_ptrs;
4a71df50
FB		 5089
5090 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5091 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3db1db93
JW		 5092 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5093 init_data.no_output_qs);
cc961d40
JG		 5094 if (rc) {
5095 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5096 goto out;
5097 }
1da1092d 5098 rc = qdio_establish(CARD_DDEV(card), &init_data);
cc961d40 5099 if (rc) {
4a71df50 5100 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 5101 qdio_free(CARD_DDEV(card));
5102 }
4a71df50 5103 }
0da9581d
EL		 5104
5105 switch (card->options.cq) {
5106 case QETH_CQ_ENABLED:
5107 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5108 break;
5109 case QETH_CQ_DISABLED:
5110 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5111 break;
5112 default:
5113 break;
5114 }
72d5e850 5115
cc961d40 5116out:
72d5e850 5117 kfree(qib_parms);
4a71df50
FB		 5118 return rc;
5119}
5120
5121static void qeth_core_free_card(struct qeth_card *card)
5122{
57a688aa 5123 QETH_CARD_TEXT(card, 2, "freecrd");
fb8d2580
JW		 5124
5125 unregister_service_level(&card->qeth_service_level);
5126 debugfs_remove_recursive(card->debugfs);
c3b2218d 5127 qeth_put_cmd(card->read_cmd);
c0a2e4d1 5128 destroy_workqueue(card->event_wq);
a2eb0ad5 5129 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 5130 kfree(card);
5131}
5132
b7ea041b 5133static void qeth_trace_features(struct qeth_card *card)
395672e0
SR		 5134{
5135 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 5136 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5137 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5138 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5139 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5140 sizeof(card->info.diagass_support));
395672e0 5141}
395672e0 5142
4a71df50 5143static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 5144 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5145 .driver_info = QETH_CARD_TYPE_OSD},
5146 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5147 .driver_info = QETH_CARD_TYPE_IQD},
5113fec0
UB		 5148 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5149 .driver_info = QETH_CARD_TYPE_OSM},
4e2b5aa5 5150#ifdef CONFIG_QETH_OSX
5113fec0
UB		 5151 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5152 .driver_info = QETH_CARD_TYPE_OSX},
4e2b5aa5 5153#endif
4a71df50
FB		 5154 {},
5155};
5156MODULE_DEVICE_TABLE(ccw, qeth_ids);
5157
5158static struct ccw_driver qeth_ccw_driver = {
3bda058b 5159 .driver = {
3e70b3b8 5160 .owner = THIS_MODULE,
3bda058b
SO		 5161 .name = "qeth",
5162 },
4a71df50
FB		 5163 .ids = qeth_ids,
5164 .probe = ccwgroup_probe_ccwdev,
5165 .remove = ccwgroup_remove_ccwdev,
5166};
5167
b7ea041b 5168static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 5169{
6ebb7f8d 5170 int retries = 3;
4a71df50
FB		 5171 int rc;
5172
57a688aa 5173 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 5174 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 5175 rc = qeth_update_from_chp_desc(card);
5176 if (rc)
5177 return rc;
4a71df50 5178retry:
6ebb7f8d 5179 if (retries < 3)
e19e5be8
JW		 5180 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5181 CARD_DEVID(card));
379ac99e 5182 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
f9e50b02
JW		 5183 qeth_stop_channel(&card->data);
5184 qeth_stop_channel(&card->write);
5185 qeth_stop_channel(&card->read);
22ae2790 5186 qdio_free(CARD_DDEV(card));
871602b1
JW		 5187
5188 rc = qeth_start_channel(&card->read);
aa909224
UB		 5189 if (rc)
5190 goto retriable;
871602b1 5191 rc = qeth_start_channel(&card->write);
aa909224
UB		 5192 if (rc)
5193 goto retriable;
871602b1 5194 rc = qeth_start_channel(&card->data);
aa909224
UB		 5195 if (rc)
5196 goto retriable;
aa909224 5197retriable:
4a71df50 5198 if (rc == -ERESTARTSYS) {
57a688aa 5199 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 5200 return rc;
5201 } else if (rc) {
57a688aa 5202 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 5203 if (--retries < 0)
4a71df50
FB		 5204 goto out;
5205 else
5206 goto retry;
5207 }
7f23d55f 5208
d0ff1f52 5209 qeth_determine_capabilities(card);
fa115adf 5210 qeth_read_ccw_conf_data(card);
7f23d55f 5211 qeth_idx_init(card);
2e873d10
JW		 5212
5213 rc = qeth_idx_activate_read_channel(card);
5214 if (rc == -EINTR) {
57a688aa 5215 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 5216 return rc;
5217 } else if (rc) {
57a688aa 5218 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 5219 if (--retries < 0)
5220 goto out;
5221 else
5222 goto retry;
5223 }
2e873d10
JW		 5224
5225 rc = qeth_idx_activate_write_channel(card);
5226 if (rc == -EINTR) {
57a688aa 5227 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 5228 return rc;
5229 } else if (rc) {
57a688aa 5230 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5231 if (--retries < 0)
5232 goto out;
5233 else
5234 goto retry;
5235 }
908abbb5 5236 card->read_or_write_problem = 0;
4a71df50
FB		 5237 rc = qeth_mpc_initialize(card);
5238 if (rc) {
57a688aa 5239 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5240 goto out;
5241 }
1da74b1c 5242
10340510
JW		 5243 rc = qeth_send_startlan(card);
5244 if (rc) {
57a688aa 5245 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5246 if (rc == -ENETDOWN) {
5247 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5248 *carrier_ok = false;
10340510 5249 } else {
10340510
JW		 5250 goto out;
5251 }
91cc98f5 5252 } else {
9fae5c3b
JW		 5253 *carrier_ok = true;
5254 }
5255
52f82bf1
JW		 5256 card->options.ipa4.supported = 0;
5257 card->options.ipa6.supported = 0;
5258 card->options.adp.supported = 0;
b4d72c08 5259 card->options.sbp.supported_funcs = 0;
1da74b1c 5260 card->info.diagass_support = 0;
1aec42bc
TR		 5261 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5262 if (rc == -ENOMEM)
5263 goto out;
ee75fb86
KM		 5264 if (qeth_is_supported(card, IPA_IPV6)) {
5265 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5266 if (rc == -ENOMEM)
5267 goto out;
5268 }
1aec42bc
TR		 5269 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5270 rc = qeth_query_setadapterparms(card);
5271 if (rc < 0) {
57a688aa 5272 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5273 goto out;
5274 }
5275 }
5276 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5277 rc = qeth_query_setdiagass(card);
0b698c83 5278 if (rc)
57a688aa 5279 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc 5280 }
9897d583 5281
b7ea041b
JW		 5282 qeth_trace_features(card);
5283
9897d583
JW		 5284 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5285 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5286 card->info.hwtrap = 0;
5287
08e95cae 5288 if (card->options.isolation != ISOLATION_MODE_NONE) {
65878fd9
JW		 5289 rc = qeth_setadpparms_set_access_ctrl(card,
5290 card->options.isolation);
08e95cae
JW		 5291 if (rc)
5292 goto out;
5293 }
9897d583 5294
baf7998d
JW		 5295 qeth_init_link_info(card);
5296
aa3ad392
JW		 5297 rc = qeth_init_qdio_queues(card);
5298 if (rc) {
5299 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5300 goto out;
5301 }
5302
4a71df50
FB		 5303 return 0;
5304out:
74eacdb9
FB		 5305 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5306 "an error on the device\n");
e19e5be8
JW		 5307 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5308 CARD_DEVID(card), rc);
4a71df50
FB		 5309 return rc;
5310}
4a71df50 5311
0b9902c1
JW		 5312static int qeth_set_online(struct qeth_card *card,
5313 const struct qeth_discipline *disc)
91003f35 5314{
b7ea041b 5315 bool carrier_ok;
91003f35
JW		 5316 int rc;
5317
91003f35
JW		 5318 mutex_lock(&card->conf_mutex);
5319 QETH_CARD_TEXT(card, 2, "setonlin");
5320
b7ea041b
JW		 5321 rc = qeth_hardsetup_card(card, &carrier_ok);
5322 if (rc) {
5323 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5324 rc = -ENODEV;
5325 goto err_hardsetup;
5326 }
5327
5328 qeth_print_status_message(card);
5329
949bbf4d 5330 if (card->dev->reg_state != NETREG_REGISTERED)
bb5ab541
JW		 5331 /* no need for locking / error handling at this early stage: */
5332 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
bb5ab541 5333
0b9902c1 5334 rc = disc->set_online(card, carrier_ok);
b7ea041b
JW		 5335 if (rc)
5336 goto err_online;
5337
5338 /* let user_space know that device is online */
5339 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
91003f35
JW		 5340
5341 mutex_unlock(&card->conf_mutex);
b7ea041b 5342 return 0;
91003f35 5343
b7ea041b
JW		 5344err_online:
5345err_hardsetup:
f2bcf9dd
JW		 5346 qeth_qdio_clear_card(card, 0);
5347 qeth_clear_working_pool_list(card);
5348 qeth_flush_local_addrs(card);
5349
b7ea041b
JW		 5350 qeth_stop_channel(&card->data);
5351 qeth_stop_channel(&card->write);
5352 qeth_stop_channel(&card->read);
5353 qdio_free(CARD_DDEV(card));
5354
5355 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5356 return rc;
5357}
5358
0b9902c1
JW		 5359int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5360 bool resetting)
91003f35
JW		 5361{
5362 int rc, rc2, rc3;
5363
91003f35
JW		 5364 mutex_lock(&card->conf_mutex);
5365 QETH_CARD_TEXT(card, 3, "setoffl");
5366
5367 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5368 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5369 card->info.hwtrap = 1;
5370 }
5371
7fb7fe5c
JW		 5372 /* cancel any stalled cmd that might block the rtnl: */
5373 qeth_clear_ipacmd_list(card);
5374
91003f35 5375 rtnl_lock();
91003f35
JW		 5376 netif_device_detach(card->dev);
5377 netif_carrier_off(card->dev);
5378 rtnl_unlock();
5379
f2bcf9dd
JW		 5380 cancel_work_sync(&card->rx_mode_work);
5381
0b9902c1 5382 disc->set_offline(card);
91003f35 5383
f2bcf9dd
JW		 5384 qeth_qdio_clear_card(card, 0);
5385 qeth_drain_output_queues(card);
5386 qeth_clear_working_pool_list(card);
5387 qeth_flush_local_addrs(card);
5388 card->info.promisc_mode = 0;
7a07a29e 5389 qeth_default_link_info(card);
f2bcf9dd 5390
91003f35
JW		 5391 rc = qeth_stop_channel(&card->data);
5392 rc2 = qeth_stop_channel(&card->write);
5393 rc3 = qeth_stop_channel(&card->read);
5394 if (!rc)
5395 rc = (rc2) ? rc2 : rc3;
5396 if (rc)
5397 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5398 qdio_free(CARD_DDEV(card));
5399
5400 /* let user_space know that device is offline */
5401 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5402
5403 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5404 return 0;
5405}
5406EXPORT_SYMBOL_GPL(qeth_set_offline);
5407
5408static int qeth_do_reset(void *data)
5409{
0b9902c1 5410 const struct qeth_discipline *disc;
91003f35
JW		 5411 struct qeth_card *card = data;
5412 int rc;
5413
0b9902c1
JW		 5414 /* Lock-free, other users will block until we are done. */
5415 disc = card->discipline;
5416
91003f35
JW		 5417 QETH_CARD_TEXT(card, 2, "recover1");
5418 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5419 return 0;
5420 QETH_CARD_TEXT(card, 2, "recover2");
5421 dev_warn(&card->gdev->dev,
5422 "A recovery process has been started for the device\n");
5423
0b9902c1
JW		 5424 qeth_set_offline(card, disc, true);
5425 rc = qeth_set_online(card, disc);
91003f35
JW		 5426 if (!rc) {
5427 dev_info(&card->gdev->dev,
5428 "Device successfully recovered!\n");
5429 } else {
d2b59bd4
AW		 5430 qeth_set_offline(card, disc, true);
5431 ccwgroup_set_offline(card->gdev, false);
91003f35
JW		 5432 dev_warn(&card->gdev->dev,
5433 "The qeth device driver failed to recover an error on the device\n");
5434 }
5435 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5436 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5437 return 0;
5438}
5439
c04b116a
JW		 5440#if IS_ENABLED(CONFIG_QETH_L3)
5441static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5442 struct qeth_hdr *hdr)
5443{
5444 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5445 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5446 struct net_device *dev = skb->dev;
5447
5448 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5449 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5450 "FAKELL", skb->len);
5451 return;
5452 }
5453
5454 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5455 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5456 ETH_P_IP;
5457 unsigned char tg_addr[ETH_ALEN];
5458
5459 skb_reset_network_header(skb);
5460 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5461 case QETH_CAST_MULTICAST:
5462 if (prot == ETH_P_IP)
5463 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5464 else
5465 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5466 QETH_CARD_STAT_INC(card, rx_multicast);
5467 break;
5468 case QETH_CAST_BROADCAST:
5469 ether_addr_copy(tg_addr, dev->broadcast);
5470 QETH_CARD_STAT_INC(card, rx_multicast);
5471 break;
5472 default:
5473 if (card->options.sniffer)
5474 skb->pkt_type = PACKET_OTHERHOST;
5475 ether_addr_copy(tg_addr, dev->dev_addr);
5476 }
5477
5478 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5479 dev_hard_header(skb, dev, prot, tg_addr,
5480 &l3_hdr->next_hop.rx.src_mac, skb->len);
5481 else
5482 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5483 skb->len);
5484 }
5485
5486 /* copy VLAN tag from hdr into skb */
5487 if (!card->options.sniffer &&
5488 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5489 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5490 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5491 l3_hdr->vlan_id :
5492 l3_hdr->next_hop.rx.vlan_id;
5493
5494 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5495 }
5496}
5497#endif
5498
5499static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5e9756a6 5500 bool uses_frags, bool is_cso)
c04b116a 5501{
dcdcf867 5502 struct napi_struct *napi = &card->napi;
c04b116a
JW		 5503
5504 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5505 skb->ip_summed = CHECKSUM_UNNECESSARY;
5506 QETH_CARD_STAT_INC(card, rx_skb_csum);
5507 } else {
5508 skb->ip_summed = CHECKSUM_NONE;
5509 }
5510
c04b116a
JW		 5511 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5512 QETH_CARD_STAT_INC(card, rx_packets);
5513 if (skb_is_nonlinear(skb)) {
5514 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5515 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5516 skb_shinfo(skb)->nr_frags);
5517 }
5518
dcdcf867
JW		 5519 if (uses_frags) {
5520 napi_gro_frags(napi);
5521 } else {
5522 skb->protocol = eth_type_trans(skb, skb->dev);
5523 napi_gro_receive(napi, skb);
5524 }
c04b116a
JW		 5525}
5526
f677fcb9 5527static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
4a71df50 5528{
f677fcb9 5529 struct page *page = virt_to_page(data);
b6f72f96 5530 unsigned int next_frag;
b3332930 5531
8d68af6a 5532 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5533 get_page(page);
f677fcb9
JW		 5534 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5535 data_len);
4a71df50
FB		 5536}
5537
bca51650
TR		 5538static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5539{
5540 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5541}
5542
c04b116a 5543static int qeth_extract_skb(struct qeth_card *card,
ed13615d 5544 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
c04b116a 5545 int *__offset)
4a71df50 5546{
562cf773 5547 struct qeth_priv *priv = netdev_priv(card->dev);
b3332930 5548 struct qdio_buffer *buffer = qethbuffer->buffer;
dcdcf867 5549 struct napi_struct *napi = &card->napi;
ed13615d 5550 struct qdio_buffer_element *element;
f677fcb9 5551 unsigned int linear_len = 0;
dcdcf867 5552 bool uses_frags = false;
4a71df50 5553 int offset = *__offset;
17caeaa4 5554 bool use_rx_sg = false;
f677fcb9 5555 unsigned int headroom;
c04b116a 5556 struct qeth_hdr *hdr;
8d68af6a 5557 struct sk_buff *skb;
76b11f8e 5558 int skb_len = 0;
5e9756a6 5559 bool is_cso;
4a71df50 5560
ed13615d
JW		 5561 element = &buffer->element[*element_no];
5562
7d4faee7 5563next_packet:
4a71df50 5564 /* qeth_hdr must not cross element boundaries */
864c17c3 5565 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50 5566 if (qeth_is_last_sbale(element))
c04b116a 5567 return -ENODATA;
4a71df50
FB		 5568 element++;
5569 offset = 0;
4a71df50 5570 }
4a71df50 5571
2db01da8 5572 hdr = phys_to_virt(element->addr) + offset;
c04b116a 5573 offset += sizeof(*hdr);
5b55633f
JW		 5574 skb = NULL;
5575
c04b116a 5576 switch (hdr->hdr.l2.id) {
76b11f8e 5577 case QETH_HEADER_TYPE_LAYER2:
c04b116a 5578 skb_len = hdr->hdr.l2.pkt_length;
5e9756a6
JW		 5579 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5580
5b55633f 5581 linear_len = ETH_HLEN;
17caeaa4 5582 headroom = 0;
76b11f8e
UB		 5583 break;
5584 case QETH_HEADER_TYPE_LAYER3:
c04b116a 5585 skb_len = hdr->hdr.l3.length;
5e9756a6
JW		 5586 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5587
7d4faee7
JW		 5588 if (!IS_LAYER3(card)) {
5589 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5590 goto walk_packet;
5591 }
5592
c04b116a 5593 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5b55633f
JW		 5594 linear_len = ETH_HLEN;
5595 headroom = 0;
5596 break;
5597 }
5598
c04b116a 5599 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5b55633f
JW		 5600 linear_len = sizeof(struct ipv6hdr);
5601 else
5602 linear_len = sizeof(struct iphdr);
1abd2296 5603 headroom = ETH_HLEN;
76b11f8e 5604 break;
76b11f8e 5605 default:
c04b116a 5606 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5fd3fcbb
JW		 5607 QETH_CARD_STAT_INC(card, rx_frame_errors);
5608 else
5609 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5610
7d4faee7 5611 /* Can't determine packet length, drop the whole buffer. */
c04b116a 5612 return -EPROTONOSUPPORT;
4a71df50
FB		 5613 }
5614
5b55633f
JW		 5615 if (skb_len < linear_len) {
5616 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5617 goto walk_packet;
5618 }
4a71df50 5619
17caeaa4 5620 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
562cf773 5621 (skb_len > READ_ONCE(priv->rx_copybreak) &&
a8c7629c 5622 !atomic_read(&card->force_alloc_skb));
8d68af6a 5623
dcdcf867 5624 if (use_rx_sg) {
8d68af6a 5625 /* QETH_CQ_ENABLED only: */
8ca8559f
JW		 5626 if (qethbuffer->rx_skb &&
5627 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
dcdcf867
JW		 5628 skb = qethbuffer->rx_skb;
5629 qethbuffer->rx_skb = NULL;
5630 goto use_skb;
5631 }
5632
5633 skb = napi_get_frags(napi);
5634 if (!skb) {
5635 /* -ENOMEM, no point in falling back further. */
5636 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5637 goto walk_packet;
5638 }
5639
5640 if (skb_tailroom(skb) >= linear_len + headroom) {
5641 uses_frags = true;
5642 goto use_skb;
5643 }
5644
5645 netdev_info_once(card->dev,
5646 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5647 linear_len + headroom, skb_tailroom(skb));
5648 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
4a71df50 5649 }
17caeaa4 5650
dcdcf867
JW		 5651 linear_len = skb_len;
5652 skb = napi_alloc_skb(napi, linear_len + headroom);
5653 if (!skb) {
17caeaa4 5654 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
dcdcf867
JW		 5655 goto walk_packet;
5656 }
4a71df50 5657
dcdcf867
JW		 5658use_skb:
5659 if (headroom)
5660 skb_reserve(skb, headroom);
7d4faee7 5661walk_packet:
4a71df50 5662 while (skb_len) {
f677fcb9 5663 int data_len = min(skb_len, (int)(element->length - offset));
2db01da8 5664 char *data = phys_to_virt(element->addr) + offset;
f677fcb9
JW		 5665
5666 skb_len -= data_len;
5667 offset += data_len;
7d4faee7 5668
f677fcb9 5669 /* Extract data from current element: */
7d4faee7 5670 if (skb && data_len) {
f677fcb9
JW		 5671 if (linear_len) {
5672 unsigned int copy_len;
5673
5674 copy_len = min_t(unsigned int, linear_len,
5675 data_len);
5676
5677 skb_put_data(skb, data, copy_len);
5678 linear_len -= copy_len;
5679 data_len -= copy_len;
5680 data += copy_len;
5681 }
5682
5683 if (data_len)
5684 qeth_create_skb_frag(skb, data, data_len);
4a71df50 5685 }
f677fcb9
JW		 5686
5687 /* Step forward to next element: */
4a71df50
FB		 5688 if (skb_len) {
5689 if (qeth_is_last_sbale(element)) {
847a50fd 5690 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5691 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7 5692 if (skb) {
dcdcf867
JW		 5693 if (uses_frags)
5694 napi_free_frags(napi);
5695 else
fdd3c5f0 5696 kfree_skb(skb);
7d4faee7
JW		 5697 QETH_CARD_STAT_INC(card,
5698 rx_length_errors);
5699 }
c04b116a 5700 return -EMSGSIZE;
4a71df50
FB		 5701 }
5702 element++;
5703 offset = 0;
4a71df50
FB		 5704 }
5705 }
7d4faee7
JW		 5706
5707 /* This packet was skipped, go get another one: */
5708 if (!skb)
5709 goto next_packet;
5710
ed13615d 5711 *element_no = element - &buffer->element[0];
4a71df50 5712 *__offset = offset;
c04b116a 5713
5e9756a6
JW		 5714#if IS_ENABLED(CONFIG_QETH_L3)
5715 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5716 qeth_l3_rebuild_skb(card, skb, hdr);
5717#endif
5718
5719 qeth_receive_skb(card, skb, uses_frags, is_cso);
c04b116a
JW		 5720 return 0;
5721}
5722
781b9a18
JW		 5723static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5724 struct qeth_qdio_buffer *buf, bool *done)
c04b116a 5725{
781b9a18 5726 unsigned int work_done = 0;
c04b116a
JW		 5727
5728 while (budget) {
ed13615d 5729 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
c04b116a
JW		 5730 &card->rx.e_offset)) {
5731 *done = true;
5732 break;
5733 }
5734
5735 work_done++;
5736 budget--;
4a71df50 5737 }
c04b116a
JW		 5738
5739 return work_done;
4a71df50 5740}
4a71df50 5741
781b9a18 5742static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
d73ef324 5743{
7c94a882 5744 struct qeth_rx *ctx = &card->rx;
781b9a18 5745 unsigned int work_done = 0;
d73ef324 5746
781b9a18 5747 while (budget > 0) {
b439044b
JW		 5748 struct qeth_qdio_buffer *buffer;
5749 unsigned int skbs_done = 0;
5750 bool done = false;
5751
781b9a18 5752 /* Fetch completed RX buffers: */
d73ef324
JW		 5753 if (!card->rx.b_count) {
5754 card->rx.qdio_err = 0;
b44995e5
JW		 5755 card->rx.b_count =
5756 qdio_inspect_input_queue(CARD_DDEV(card), 0,
5757 &card->rx.b_index,
5758 &card->rx.qdio_err);
d73ef324
JW		 5759 if (card->rx.b_count <= 0) {
5760 card->rx.b_count = 0;
5761 break;
5762 }
d73ef324
JW		 5763 }
5764
781b9a18 5765 /* Process one completed RX buffer: */
b439044b
JW		 5766 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5767 if (!(card->rx.qdio_err &&
5768 qeth_check_qdio_errors(card, buffer->buffer,
5769 card->rx.qdio_err, "qinerr")))
5770 skbs_done = qeth_extract_skbs(card, budget, buffer,
5771 &done);
5772 else
5773 done = true;
5774
5775 work_done += skbs_done;
5776 budget -= skbs_done;
5777
5778 if (done) {
5779 QETH_CARD_STAT_INC(card, rx_bufs);
5780 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
eff73e16 5781 buffer->pool_entry = NULL;
b439044b 5782 card->rx.b_count--;
7c94a882
JW		 5783 ctx->bufs_refill++;
5784 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5785 ctx->bufs_refill);
b439044b
JW		 5786
5787 /* Step forward to next buffer: */
5788 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5789 card->rx.buf_element = 0;
5790 card->rx.e_offset = 0;
d73ef324
JW		 5791 }
5792 }
5793
781b9a18
JW		 5794 return work_done;
5795}
5796
0a6e6345
JW		 5797static void qeth_cq_poll(struct qeth_card *card)
5798{
5799 unsigned int work_done = 0;
5800
5801 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5802 unsigned int start, error;
5803 int completed;
5804
b44995e5
JW		 5805 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
5806 &error);
0a6e6345
JW		 5807 if (completed <= 0)
5808 return;
5809
5810 qeth_qdio_cq_handler(card, error, 1, start, completed);
5811 work_done += completed;
5812 }
5813}
5814
781b9a18
JW		 5815int qeth_poll(struct napi_struct *napi, int budget)
5816{
5817 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5818 unsigned int work_done;
5819
5820 work_done = qeth_rx_poll(card, budget);
5821
7a4b92e8
JW		 5822 if (qeth_use_tx_irqs(card)) {
5823 struct qeth_qdio_out_q *queue;
5824 unsigned int i;
5825
5826 qeth_for_each_output_queue(card, queue, i) {
5827 if (!qeth_out_queue_is_empty(queue))
5828 napi_schedule(&queue->napi);
5829 }
5830 }
5831
0a6e6345
JW		 5832 if (card->options.cq == QETH_CQ_ENABLED)
5833 qeth_cq_poll(card);
5834
7c94a882
JW		 5835 if (budget) {
5836 struct qeth_rx *ctx = &card->rx;
5837
5838 /* Process any substantial refill backlog: */
5839 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5840
5841 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5842 if (work_done >= budget)
5843 return work_done;
5844 }
781b9a18 5845
f9ce416a 5846 if (napi_complete_done(napi, work_done) &&
0a6e6345 5847 qdio_start_irq(CARD_DDEV(card)))
f9ce416a 5848 napi_schedule(napi);
781b9a18 5849
d73ef324
JW		 5850 return work_done;
5851}
5852EXPORT_SYMBOL_GPL(qeth_poll);
5853
e53edf74 5854static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
7940eaf2
JW		 5855 unsigned int bidx, unsigned int qdio_error,
5856 int budget)
e53edf74
JW		 5857{
5858 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5859 u8 sflags = buffer->buffer->element[15].sflags;
5860 struct qeth_card *card = queue->card;
7940eaf2 5861 bool error = !!qdio_error;
e53edf74 5862
2223318c 5863 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
396c1004 5864 struct qaob *aob = buffer->aob;
838e4cc8 5865 struct qeth_qaob_priv1 *priv;
f875d880 5866 enum iucv_tx_notify notify;
396c1004
JW		 5867
5868 if (!aob) {
5869 netdev_WARN_ONCE(card->dev,
5870 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5871 bidx, queue->queue_no);
5872 qeth_schedule_recovery(card);
5873 return;
5874 }
e53edf74 5875
db4ffdce
JW		 5876 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5877
838e4cc8
JW		 5878 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5879 /* QAOB hasn't completed yet: */
5880 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
e53edf74
JW		 5881 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5882
838e4cc8
JW		 5883 /* Prepare the queue slot for immediate re-use: */
5884 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5885 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5886 QETH_CARD_TEXT(card, 2, "outofbuf");
5887 qeth_schedule_recovery(card);
8908f36d 5888 }
e53edf74 5889
838e4cc8
JW		 5890 list_add(&buffer->list_entry, &queue->pending_bufs);
5891 /* Skip clearing the buffer: */
5892 return;
e53edf74 5893 }
396c1004 5894
838e4cc8
JW		 5895 /* QAOB already completed: */
5896 notify = qeth_compute_cq_notification(aob->aorc, 0);
5897 qeth_notify_skbs(queue, buffer, notify);
5898 error = !!aob->aorc;
396c1004 5899 memset(aob, 0, sizeof(*aob));
db4ffdce 5900 } else if (card->options.cq == QETH_CQ_ENABLED) {
e53edf74
JW		 5901 qeth_notify_skbs(queue, buffer,
5902 qeth_compute_cq_notification(sflags, 0));
db4ffdce
JW		 5903 }
5904
85e537d8 5905 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 5906}
5907
5908static int qeth_tx_poll(struct napi_struct *napi, int budget)
5909{
5910 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5911 unsigned int queue_no = queue->queue_no;
5912 struct qeth_card *card = queue->card;
5913 struct net_device *dev = card->dev;
5914 unsigned int work_done = 0;
5915 struct netdev_queue *txq;
5916
7a4b92e8
JW		 5917 if (IS_IQD(card))
5918 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5919 else
5920 txq = netdev_get_tx_queue(dev, queue_no);
e53edf74
JW		 5921
5922 while (1) {
5923 unsigned int start, error, i;
96bd6c94
JW		 5924 unsigned int packets = 0;
5925 unsigned int bytes = 0;
e53edf74
JW		 5926 int completed;
5927
ad4bbd72 5928 qeth_tx_complete_pending_bufs(card, queue, false, budget);
c20383ad 5929
e53edf74
JW		 5930 if (qeth_out_queue_is_empty(queue)) {
5931 napi_complete(napi);
5932 return 0;
5933 }
5934
5935 /* Give the CPU a breather: */
5936 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5937 QETH_TXQ_STAT_INC(queue, completion_yield);
5938 if (napi_complete_done(napi, 0))
5939 napi_schedule(napi);
5940 return 0;
5941 }
5942
b44995e5
JW		 5943 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
5944 &start, &error);
e53edf74
JW		 5945 if (completed <= 0) {
5946 /* Ensure we see TX completion for pending work: */
7a4b92e8
JW		 5947 if (napi_complete_done(napi, 0) &&
5948 !atomic_read(&queue->set_pci_flags_count))
5949 qeth_tx_arm_timer(queue, queue->rescan_usecs);
e53edf74
JW		 5950 return 0;
5951 }
5952
5953 for (i = start; i < start + completed; i++) {
96bd6c94 5954 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 5955 unsigned int bidx = QDIO_BUFNR(i);
5956
96bd6c94 5957 buffer = queue->bufs[bidx];
1ab2f8c6 5958 packets += buffer->frames;
96bd6c94
JW		 5959 bytes += buffer->bytes;
5960
5961 qeth_handle_send_error(card, buffer, error);
7a4b92e8
JW		 5962 if (IS_IQD(card))
5963 qeth_iqd_tx_complete(queue, bidx, error, budget);
5964 else
5965 qeth_clear_output_buffer(queue, buffer, error,
5966 budget);
e53edf74
JW		 5967 }
5968
5969 atomic_sub(completed, &queue->used_buffers);
5970 work_done += completed;
7a4b92e8
JW		 5971 if (IS_IQD(card))
5972 netdev_tx_completed_queue(txq, packets, bytes);
5973 else
5974 qeth_check_outbound_queue(queue);
e53edf74
JW		 5975
5976 /* xmit may have observed the full-condition, but not yet
5977 * stopped the txq. In which case the code below won't trigger.
5978 * So before returning, xmit will re-check the txq's fill level
5979 * and wake it up if needed.
5980 */
5981 if (netif_tx_queue_stopped(txq) &&
5982 !qeth_out_queue_is_full(queue))
5983 netif_tx_wake_queue(txq);
5984 }
5985}
5986
ad3cbf61
JW		 5987static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5988{
5989 if (!cmd->hdr.return_code)
5990 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5991 return cmd->hdr.return_code;
5992}
5993
4666d7fb
JW		 5994static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5995 struct qeth_reply *reply,
5996 unsigned long data)
5997{
5998 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5999 struct qeth_ipa_caps *caps = reply->param;
6000
6001 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6002 return -EIO;
4666d7fb
JW		 6003
6004 caps->supported = cmd->data.setassparms.data.caps.supported;
6005 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6006 return 0;
6007}
6008
8f43fb00
TR		 6009int qeth_setassparms_cb(struct qeth_card *card,
6010 struct qeth_reply *reply, unsigned long data)
4d7def2a 6011{
742d4d40 6012 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 6013
6014 QETH_CARD_TEXT(card, 4, "defadpcb");
6015
742d4d40
JW		 6016 if (cmd->hdr.return_code)
6017 return -EIO;
6018
6019 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6020 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
52f82bf1 6021 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
742d4d40 6022 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
52f82bf1 6023 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
4d7def2a
TR		 6024 return 0;
6025}
8f43fb00 6026EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 6027
b475e316
TR		 6028struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6029 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 6030 u16 cmd_code,
6031 unsigned int data_length,
b475e316 6032 enum qeth_prot_versions prot)
4d7def2a 6033{
b9150461
JW		 6034 struct qeth_ipacmd_setassparms *setassparms;
6035 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 6036 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 6037
6038 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 6039 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6040 data_length +
6041 offsetof(struct qeth_ipacmd_setassparms,
6042 data));
6043 if (!iob)
6044 return NULL;
4d7def2a 6045
b9150461
JW		 6046 setassparms = &__ipa_cmd(iob)->data.setassparms;
6047 setassparms->assist_no = ipa_func;
4d7def2a 6048
b9150461
JW		 6049 hdr = &setassparms->hdr;
6050 hdr->length = sizeof(*hdr) + data_length;
6051 hdr->command_code = cmd_code;
4d7def2a
TR		 6052 return iob;
6053}
b475e316 6054EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 6055
a8155b00
KM		 6056int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6057 enum qeth_ipa_funcs ipa_func,
1c696c89 6058 u16 cmd_code, u32 *data,
a8155b00 6059 enum qeth_prot_versions prot)
4d7def2a 6060{
1c696c89 6061 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 6062 struct qeth_cmd_buffer *iob;
6063
a8155b00 6064 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 6065 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 6066 if (!iob)
6067 return -ENOMEM;
4fa55fa9 6068
1c696c89
JW		 6069 if (data)
6070 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 6071 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 6072}
a8155b00 6073EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 6074
4a71df50
FB		 6075static void qeth_unregister_dbf_views(void)
6076{
d11ba0c4 6077 int x;
378ac80d 6078
d11ba0c4
PT		 6079 for (x = 0; x < QETH_DBF_INFOS; x++) {
6080 debug_unregister(qeth_dbf[x].id);
6081 qeth_dbf[x].id = NULL;
6082 }
4a71df50
FB		 6083}
6084
8e96c51c 6085void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 6086{
6087 char dbf_txt_buf[32];
345aa66e 6088 va_list args;
cd023216 6089
8e6a8285 6090 if (!debug_level_enabled(id, level))
cd023216 6091 return;
345aa66e 6092 va_start(args, fmt);
74c05a38 6093 vscnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
345aa66e 6094 va_end(args);
8e96c51c 6095 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 6096}
6097EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6098
4a71df50
FB		 6099static int qeth_register_dbf_views(void)
6100{
d11ba0c4
PT		 6101 int ret;
6102 int x;
6103
6104 for (x = 0; x < QETH_DBF_INFOS; x++) {
6105 /* register the areas */
6106 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6107 qeth_dbf[x].pages,
6108 qeth_dbf[x].areas,
6109 qeth_dbf[x].len);
6110 if (qeth_dbf[x].id == NULL) {
6111 qeth_unregister_dbf_views();
6112 return -ENOMEM;
6113 }
4a71df50 6114
d11ba0c4
PT		 6115 /* register a view */
6116 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6117 if (ret) {
6118 qeth_unregister_dbf_views();
6119 return ret;
6120 }
4a71df50 6121
d11ba0c4
PT		 6122 /* set a passing level */
6123 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6124 }
4a71df50
FB		 6125
6126 return 0;
6127}
6128
a70fee3b
JW		 6129static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6130
ea12f1b3
JW		 6131int qeth_setup_discipline(struct qeth_card *card,
6132 enum qeth_discipline_id discipline)
4a71df50 6133{
ea12f1b3
JW		 6134 int rc;
6135
2022e00c 6136 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 6137 switch (discipline) {
6138 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 6139 card->discipline = try_then_request_module(
6140 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 6141 break;
6142 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 6143 card->discipline = try_then_request_module(
6144 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 6145 break;
c70eb09d
JW		 6146 default:
6147 break;
4a71df50 6148 }
a70fee3b 6149 mutex_unlock(&qeth_mod_mutex);
c70eb09d 6150
c041f2d4 6151 if (!card->discipline) {
74eacdb9
FB		 6152 dev_err(&card->gdev->dev, "There is no kernel module to "
6153 "support discipline %d\n", discipline);
a70fee3b 6154 return -EINVAL;
4a71df50 6155 }
a70fee3b 6156
ea12f1b3
JW		 6157 rc = card->discipline->setup(card->gdev);
6158 if (rc) {
6159 if (discipline == QETH_DISCIPLINE_LAYER2)
6160 symbol_put(qeth_l2_discipline);
6161 else
6162 symbol_put(qeth_l3_discipline);
6163 card->discipline = NULL;
6164
6165 return rc;
6166 }
6167
c1a935f6 6168 card->options.layer = discipline;
a70fee3b 6169 return 0;
4a71df50
FB		 6170}
6171
ea12f1b3 6172void qeth_remove_discipline(struct qeth_card *card)
4a71df50 6173{
ea12f1b3
JW		 6174 card->discipline->remove(card->gdev);
6175
4fda3354 6176 if (IS_LAYER2(card))
c041f2d4 6177 symbol_put(qeth_l2_discipline);
4a71df50 6178 else
c041f2d4 6179 symbol_put(qeth_l3_discipline);
c1a935f6 6180 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 6181 card->discipline = NULL;
4a71df50
FB		 6182}
6183
ae57ea7a 6184static const struct device_type qeth_generic_devtype = {
b7169c51 6185 .name = "qeth_generic",
b7169c51 6186};
b7169c51 6187
819dc537
SR		 6188#define DBF_NAME_LEN 20
6189
6190struct qeth_dbf_entry {
6191 char dbf_name[DBF_NAME_LEN];
6192 debug_info_t *dbf_info;
6193 struct list_head dbf_list;
6194};
6195
6196static LIST_HEAD(qeth_dbf_list);
6197static DEFINE_MUTEX(qeth_dbf_list_mutex);
6198
6199static debug_info_t *qeth_get_dbf_entry(char *name)
6200{
6201 struct qeth_dbf_entry *entry;
6202 debug_info_t *rc = NULL;
6203
6204 mutex_lock(&qeth_dbf_list_mutex);
6205 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6206 if (strcmp(entry->dbf_name, name) == 0) {
6207 rc = entry->dbf_info;
6208 break;
6209 }
6210 }
6211 mutex_unlock(&qeth_dbf_list_mutex);
6212 return rc;
6213}
6214
6215static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6216{
6217 struct qeth_dbf_entry *new_entry;
6218
6219 card->debug = debug_register(name, 2, 1, 8);
6220 if (!card->debug) {
6221 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6222 goto err;
6223 }
6224 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6225 goto err_dbg;
6226 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6227 if (!new_entry)
6228 goto err_dbg;
e43e6d95 6229 strscpy(new_entry->dbf_name, name, sizeof(new_entry->dbf_name));
819dc537
SR		 6230 new_entry->dbf_info = card->debug;
6231 mutex_lock(&qeth_dbf_list_mutex);
6232 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6233 mutex_unlock(&qeth_dbf_list_mutex);
6234
6235 return 0;
6236
6237err_dbg:
6238 debug_unregister(card->debug);
6239err:
6240 return -ENOMEM;
6241}
6242
6243static void qeth_clear_dbf_list(void)
6244{
6245 struct qeth_dbf_entry *entry, *tmp;
6246
6247 mutex_lock(&qeth_dbf_list_mutex);
6248 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6249 list_del(&entry->dbf_list);
6250 debug_unregister(entry->dbf_info);
6251 kfree(entry);
6252 }
6253 mutex_unlock(&qeth_dbf_list_mutex);
6254}
6255
d3d1b205
JW		 6256static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6257{
6258 struct net_device *dev;
562cf773 6259 struct qeth_priv *priv;
d3d1b205
JW		 6260
6261 switch (card->info.type) {
6262 case QETH_CARD_TYPE_IQD:
562cf773 6263 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
d8564e19 6264 ether_setup, QETH_MAX_OUT_QUEUES, 1);
d3d1b205 6265 break;
73dc2daf 6266 case QETH_CARD_TYPE_OSM:
562cf773 6267 dev = alloc_etherdev(sizeof(*priv));
73dc2daf 6268 break;
d3d1b205 6269 default:
d8564e19 6270 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
d3d1b205
JW		 6271 }
6272
6273 if (!dev)
6274 return NULL;
6275
562cf773
JW		 6276 priv = netdev_priv(dev);
6277 priv->rx_copybreak = QETH_RX_COPYBREAK;
949bbf4d 6278 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
562cf773 6279
d3d1b205
JW		 6280 dev->ml_priv = card;
6281 dev->watchdog_timeo = QETH_TX_TIMEOUT;
a8c7629c 6282 dev->min_mtu = 576;
8ce7a9e0
JW		 6283 /* initialized when device first goes online: */
6284 dev->max_mtu = 0;
6285 dev->mtu = 0;
d3d1b205
JW		 6286 SET_NETDEV_DEV(dev, &card->gdev->dev);
6287 netif_carrier_off(dev);
5f89eca5 6288
a8c7629c
JW		 6289 dev->ethtool_ops = &qeth_ethtool_ops;
6290 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6291 dev->hw_features |= NETIF_F_SG;
6292 dev->vlan_features |= NETIF_F_SG;
6293 if (IS_IQD(card))
6294 dev->features |= NETIF_F_SG;
5f89eca5 6295
d3d1b205
JW		 6296 return dev;
6297}
6298
6299struct net_device *qeth_clone_netdev(struct net_device *orig)
6300{
6301 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6302
6303 if (!clone)
6304 return NULL;
6305
6306 clone->dev_port = orig->dev_port;
6307 return clone;
6308}
6309
4a71df50
FB		 6310static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6311{
6312 struct qeth_card *card;
6313 struct device *dev;
6314 int rc;
c70eb09d 6315 enum qeth_discipline_id enforced_disc;
819dc537 6316 char dbf_name[DBF_NAME_LEN];
4a71df50 6317
d11ba0c4 6318 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 6319
6320 dev = &gdev->dev;
6321 if (!get_device(dev))
6322 return -ENODEV;
6323
2a0217d5 6324 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 6325
121ca39a 6326 card = qeth_alloc_card(gdev);
4a71df50 6327 if (!card) {
d11ba0c4 6328 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 6329 rc = -ENOMEM;
6330 goto err_dev;
6331 }
af039068 6332
74c05a38
TW		 6333 scnprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6334 dev_name(&gdev->dev));
819dc537 6335 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 6336 if (!card->debug) {
819dc537
SR		 6337 rc = qeth_add_dbf_entry(card, dbf_name);
6338 if (rc)
6339 goto err_card;
af039068 6340 }
af039068 6341
95f4d8b7 6342 qeth_setup_card(card);
d3d1b205 6343 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 6344 if (!card->dev) {
6345 rc = -ENOMEM;
d3d1b205 6346 goto err_card;
778b1ac7 6347 }
d3d1b205 6348
1c103cf8
JW		 6349 qeth_determine_capabilities(card);
6350 qeth_set_blkt_defaults(card);
6351
832585d2
JW		 6352 card->qdio.in_q = qeth_alloc_qdio_queue();
6353 if (!card->qdio.in_q) {
6354 rc = -ENOMEM;
6355 goto err_rx_queue;
6356 }
6357
73dc2daf
JW		 6358 card->qdio.no_out_queues = card->dev->num_tx_queues;
6359 rc = qeth_update_from_chp_desc(card);
6360 if (rc)
6361 goto err_chp_desc;
09ac887f 6362
a8c7629c 6363 gdev->dev.groups = qeth_dev_groups;
0b8da811 6364
c70eb09d
JW		 6365 enforced_disc = qeth_enforce_discipline(card);
6366 switch (enforced_disc) {
6367 case QETH_DISCIPLINE_UNDETERMINED:
6368 gdev->dev.type = &qeth_generic_devtype;
6369 break;
6370 default:
6371 card->info.layer_enforced = true;
b41b554c 6372 /* It's so early that we don't need the discipline_mutex yet. */
ea12f1b3 6373 rc = qeth_setup_discipline(card, enforced_disc);
5113fec0 6374 if (rc)
ea12f1b3 6375 goto err_setup_disc;
2d2ebb3e 6376
2d2ebb3e 6377 break;
4a71df50
FB		 6378 }
6379
4a71df50
FB		 6380 return 0;
6381
ea12f1b3 6382err_setup_disc:
a4cdc9ba 6383err_chp_desc:
832585d2
JW		 6384 qeth_free_qdio_queue(card->qdio.in_q);
6385err_rx_queue:
73dc2daf 6386 free_netdev(card->dev);
4a71df50
FB		 6387err_card:
6388 qeth_core_free_card(card);
6389err_dev:
6390 put_device(dev);
6391 return rc;
6392}
6393
6394static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6395{
4a71df50
FB		 6396 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6397
57a688aa 6398 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 6399
b41b554c 6400 mutex_lock(&card->discipline_mutex);
ea12f1b3
JW		 6401 if (card->discipline)
6402 qeth_remove_discipline(card);
b41b554c 6403 mutex_unlock(&card->discipline_mutex);
9dc48ccc 6404
8311c7a2
JW		 6405 qeth_free_qdio_queues(card);
6406
832585d2 6407 qeth_free_qdio_queue(card->qdio.in_q);
d3d1b205 6408 free_netdev(card->dev);
4a71df50 6409 qeth_core_free_card(card);
4a71df50 6410 put_device(&gdev->dev);
4a71df50
FB		 6411}
6412
6413static int qeth_core_set_online(struct ccwgroup_device *gdev)
6414{
6415 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6416 int rc = 0;
c70eb09d 6417 enum qeth_discipline_id def_discipline;
4a71df50 6418
b41b554c 6419 mutex_lock(&card->discipline_mutex);
c041f2d4 6420 if (!card->discipline) {
379ac99e
JW		 6421 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6422 QETH_DISCIPLINE_LAYER2;
ea12f1b3 6423 rc = qeth_setup_discipline(card, def_discipline);
4a71df50
FB		 6424 if (rc)
6425 goto err;
4a71df50 6426 }
91003f35 6427
0b9902c1 6428 rc = qeth_set_online(card, card->discipline);
0b9902c1 6429
4a71df50 6430err:
b41b554c 6431 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 6432 return rc;
6433}
6434
6435static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6436{
6437 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
0b9902c1 6438 int rc;
91003f35 6439
0b9902c1
JW		 6440 mutex_lock(&card->discipline_mutex);
6441 rc = qeth_set_offline(card, card->discipline, false);
6442 mutex_unlock(&card->discipline_mutex);
6443
6444 return rc;
4a71df50
FB		 6445}
6446
6447static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6448{
6449 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
378ac80d 6450
96d1bb53
JW		 6451 qeth_set_allowed_threads(card, 0, 1);
6452 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6453 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6454 qeth_qdio_clear_card(card, 0);
41c47da3 6455 qeth_drain_output_queues(card);
96d1bb53 6456 qdio_free(CARD_DDEV(card));
4a71df50
FB		 6457}
6458
36369569
GKH		 6459static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6460 size_t count)
4a71df50
FB		 6461{
6462 int err;
4a71df50 6463
6d8769ab
JW		 6464 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6465 buf);
b7169c51
SO		 6466
6467 return err ? err : count;
6468}
36369569 6469static DRIVER_ATTR_WO(group);
4a71df50 6470
f47e2256
SO		 6471static struct attribute *qeth_drv_attrs[] = {
6472 &driver_attr_group.attr,
6473 NULL,
6474};
6475static struct attribute_group qeth_drv_attr_group = {
6476 .attrs = qeth_drv_attrs,
6477};
6478static const struct attribute_group *qeth_drv_attr_groups[] = {
6479 &qeth_drv_attr_group,
6480 NULL,
6481};
6482
6d8769ab
JW		 6483static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6484 .driver = {
6485 .groups = qeth_drv_attr_groups,
6486 .owner = THIS_MODULE,
6487 .name = "qeth",
6488 },
6489 .ccw_driver = &qeth_ccw_driver,
6490 .setup = qeth_core_probe_device,
6491 .remove = qeth_core_remove_device,
6492 .set_online = qeth_core_set_online,
6493 .set_offline = qeth_core_set_offline,
6494 .shutdown = qeth_core_shutdown,
6d8769ab
JW		 6495};
6496
18787eee 6497int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
942d6984
JW		 6498{
6499 struct qeth_card *card = dev->ml_priv;
942d6984
JW		 6500 int rc = 0;
6501
942d6984
JW		 6502 switch (cmd) {
6503 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
18787eee 6504 rc = qeth_snmp_command(card, data);
942d6984
JW		 6505 break;
6506 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 6507 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6508 !IS_VM_NIC(card))
942d6984 6509 return 1;
379ac99e 6510 return 0;
18787eee
AB		 6511 case SIOC_QETH_QUERY_OAT:
6512 rc = qeth_query_oat_command(card, data);
6513 break;
6514 default:
2decb0b7 6515 rc = -EOPNOTSUPP;
18787eee
AB		 6516 }
6517 if (rc)
6518 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6519 return rc;
6520}
6521EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6522
6523int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6524{
6525 struct qeth_card *card = dev->ml_priv;
6526 struct mii_ioctl_data *mii_data;
6527 int rc = 0;
6528
6529 switch (cmd) {
942d6984
JW		 6530 case SIOCGMIIPHY:
6531 mii_data = if_mii(rq);
6532 mii_data->phy_id = 0;
6533 break;
6534 case SIOCGMIIREG:
6535 mii_data = if_mii(rq);
6536 if (mii_data->phy_id != 0)
6537 rc = -EINVAL;
6538 else
6539 mii_data->val_out = qeth_mdio_read(dev,
6540 mii_data->phy_id, mii_data->reg_num);
6541 break;
942d6984 6542 default:
18787eee 6543 return -EOPNOTSUPP;
942d6984
JW		 6544 }
6545 if (rc)
6546 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6547 return rc;
6548}
6549EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6550
4386e34f
JW		 6551static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6552 unsigned long data)
c9475369
TR		 6553{
6554 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 6555 u32 *features = reply->param;
c9475369 6556
ad3cbf61 6557 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6558 return -EIO;
c9475369 6559
4386e34f 6560 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 6561 return 0;
6562}
6563
4386e34f
JW		 6564static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6565 enum qeth_prot_versions prot)
c9475369 6566{
1c696c89
JW		 6567 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6568 NULL, prot);
c9475369
TR		 6569}
6570
4386e34f 6571static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
3be83016 6572 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6573{
571f9dd8 6574 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 6575 struct qeth_cmd_buffer *iob;
6576 struct qeth_ipa_caps caps;
6577 u32 features;
4d7def2a
TR		 6578 int rc;
6579
7e83747d
JW		 6580 /* some L3 HW requires combined L3+L4 csum offload: */
6581 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6582 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 6583 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 6584
4386e34f
JW		 6585 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6586 prot);
6587 if (!iob)
6588 return -ENOMEM;
6589
6590 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6591 if (rc)
4d7def2a 6592 return rc;
7e83747d 6593
4386e34f
JW		 6594 if ((required_features & features) != required_features) {
6595 qeth_set_csum_off(card, cstype, prot);
6596 return -EOPNOTSUPP;
6597 }
7e83747d 6598
b9150461
JW		 6599 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6600 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 6601 prot);
4386e34f
JW		 6602 if (!iob) {
6603 qeth_set_csum_off(card, cstype, prot);
6604 return -ENOMEM;
f9d8e6dc 6605 }
4386e34f
JW		 6606
6607 if (features & QETH_IPA_CHECKSUM_LP2LP)
6608 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6609 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6610 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6611 if (rc) {
4386e34f 6612 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6613 return rc;
6614 }
8f43fb00 6615
4386e34f
JW		 6616 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6617 !qeth_ipa_caps_enabled(&caps, required_features)) {
6618 qeth_set_csum_off(card, cstype, prot);
6619 return -EOPNOTSUPP;
6620 }
6621
a8155b00
KM		 6622 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6623 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
3be83016
JW		 6624
6625 if (lp2lp)
6626 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6627
4d7def2a
TR		 6628 return 0;
6629}
6630
a8155b00 6631static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
3be83016 6632 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6633{
3be83016 6634 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
742d4d40 6635 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6636}
4d7def2a 6637
4666d7fb
JW		 6638static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6639 unsigned long data)
6640{
6641 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6642 struct qeth_tso_start_data *tso_data = reply->param;
6643
6644 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6645 return -EIO;
4666d7fb
JW		 6646
6647 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6648 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6649 return 0;
6650}
6651
1f83b817
JW		 6652static int qeth_set_tso_off(struct qeth_card *card,
6653 enum qeth_prot_versions prot)
4d7def2a 6654{
1f83b817 6655 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6656 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6657}
4d7def2a 6658
1f83b817
JW		 6659static int qeth_set_tso_on(struct qeth_card *card,
6660 enum qeth_prot_versions prot)
6661{
4666d7fb
JW		 6662 struct qeth_tso_start_data tso_data;
6663 struct qeth_cmd_buffer *iob;
6664 struct qeth_ipa_caps caps;
6665 int rc;
6666
6667 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6668 IPA_CMD_ASS_START, 0, prot);
6669 if (!iob)
6670 return -ENOMEM;
6671
4fa55fa9 6672 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6673 if (rc)
6674 return rc;
6675
6676 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6677 qeth_set_tso_off(card, prot);
6678 return -EOPNOTSUPP;
6679 }
6680
6681 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6682 IPA_CMD_ASS_ENABLE,
6683 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6684 if (!iob) {
6685 qeth_set_tso_off(card, prot);
6686 return -ENOMEM;
6687 }
6688
6689 /* enable TSO capability */
4fa55fa9
JW		 6690 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6691 QETH_IPA_LARGE_SEND_TCP;
6692 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6693 if (rc) {
6694 qeth_set_tso_off(card, prot);
6695 return rc;
6696 }
6697
6698 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6699 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6700 qeth_set_tso_off(card, prot);
6701 return -EOPNOTSUPP;
6702 }
6703
6704 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6705 tso_data.mss);
6706 return 0;
1f83b817 6707}
4d7def2a 6708
1f83b817
JW		 6709static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6710 enum qeth_prot_versions prot)
6711{
742d4d40 6712 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6713}
8f43fb00 6714
d7e6ed97
KM		 6715static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6716{
6717 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6718 int rc_ipv6;
6719
6720 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6721 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6722 QETH_PROT_IPV4, NULL);
d7e6ed97
KM		 6723 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6724 /* no/one Offload Assist available, so the rc is trivial */
6725 return rc_ipv4;
ce344356 6726
d7e6ed97 6727 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6728 QETH_PROT_IPV6, NULL);
d7e6ed97
KM		 6729
6730 if (on)
6731 /* enable: success if any Assist is active */
6732 return (rc_ipv6) ? rc_ipv4 : 0;
6733
6734 /* disable: failure if any Assist is still active */
6735 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6736}
6737
ce344356 6738/**
d025da9e
JW		 6739 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6740 * @dev: a net_device
ce344356 6741 */
d025da9e 6742void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6743{
6744 struct qeth_card *card = dev->ml_priv;
d025da9e 6745 netdev_features_t features;
e830baa9 6746
d025da9e 6747 features = dev->features;
5fc692a7 6748 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6749 * netdev_update_features() will restart them.
6750 */
5fc692a7
JW		 6751 dev->features &= ~dev->hw_features;
6752 /* toggle VLAN filter, so that VIDs are re-programmed: */
6753 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6754 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6755 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6756 }
ce344356 6757 netdev_update_features(dev);
d025da9e
JW		 6758 if (features != dev->features)
6759 dev_warn(&card->gdev->dev,
6760 "Device recovery failed to restore all offload features\n");
e830baa9 6761}
d025da9e 6762EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6763
0d49c06b
JW		 6764static void qeth_check_restricted_features(struct qeth_card *card,
6765 netdev_features_t changed,
6766 netdev_features_t actual)
6767{
6768 netdev_features_t ipv6_features = NETIF_F_TSO6;
6769 netdev_features_t ipv4_features = NETIF_F_TSO;
6770
6771 if (!card->info.has_lp2lp_cso_v6)
6772 ipv6_features |= NETIF_F_IPV6_CSUM;
6773 if (!card->info.has_lp2lp_cso_v4)
6774 ipv4_features |= NETIF_F_IP_CSUM;
6775
6776 if ((changed & ipv6_features) && !(actual & ipv6_features))
6777 qeth_flush_local_addrs6(card);
6778 if ((changed & ipv4_features) && !(actual & ipv4_features))
6779 qeth_flush_local_addrs4(card);
6780}
6781
8f43fb00
TR		 6782int qeth_set_features(struct net_device *dev, netdev_features_t features)
6783{
6784 struct qeth_card *card = dev->ml_priv;
6c7cd712 6785 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6786 int rc = 0;
6787
57a688aa
JW		 6788 QETH_CARD_TEXT(card, 2, "setfeat");
6789 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6790
6c7cd712 6791 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00 6792 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
3be83016
JW		 6793 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6794 &card->info.has_lp2lp_cso_v4);
6c7cd712
HW		 6795 if (rc)
6796 changed ^= NETIF_F_IP_CSUM;
6797 }
571f9dd8
KM		 6798 if (changed & NETIF_F_IPV6_CSUM) {
6799 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
3be83016
JW		 6800 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6801 &card->info.has_lp2lp_cso_v6);
571f9dd8
KM		 6802 if (rc)
6803 changed ^= NETIF_F_IPV6_CSUM;
6804 }
d7e6ed97
KM		 6805 if (changed & NETIF_F_RXCSUM) {
6806 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6807 if (rc)
6808 changed ^= NETIF_F_RXCSUM;
6809 }
1f83b817
JW		 6810 if (changed & NETIF_F_TSO) {
6811 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6812 QETH_PROT_IPV4);
6c7cd712
HW		 6813 if (rc)
6814 changed ^= NETIF_F_TSO;
6815 }
82bf5c08
JW		 6816 if (changed & NETIF_F_TSO6) {
6817 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6818 QETH_PROT_IPV6);
6819 if (rc)
6820 changed ^= NETIF_F_TSO6;
6821 }
6c7cd712 6822
0d49c06b
JW		 6823 qeth_check_restricted_features(card, dev->features ^ features,
6824 dev->features ^ changed);
6825
6c7cd712
HW		 6826 /* everything changed successfully? */
6827 if ((dev->features ^ features) == changed)
6828 return 0;
6829 /* something went wrong. save changed features and return error */
6830 dev->features ^= changed;
6831 return -EIO;
8f43fb00
TR		 6832}
6833EXPORT_SYMBOL_GPL(qeth_set_features);
6834
6835netdev_features_t qeth_fix_features(struct net_device *dev,
6836 netdev_features_t features)
6837{
6838 struct qeth_card *card = dev->ml_priv;
6839
57a688aa 6840 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6841 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6842 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6843 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6844 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6845 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6846 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6847 features &= ~NETIF_F_RXCSUM;
cf536ffe 6848 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6849 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6850 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6851 features &= ~NETIF_F_TSO6;
e6e771b3 6852
57a688aa 6853 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6854 return features;
6855}
6856EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6857
6d69b1f1
JW		 6858netdev_features_t qeth_features_check(struct sk_buff *skb,
6859 struct net_device *dev,
6860 netdev_features_t features)
6861{
8cebedb6
JW		 6862 struct qeth_card *card = dev->ml_priv;
6863
c619e9a6 6864 /* Traffic with local next-hop is not eligible for some offloads: */
8cebedb6 6865 if (skb->ip_summed == CHECKSUM_PARTIAL &&
65878fd9 6866 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
c619e9a6
JW		 6867 netdev_features_t restricted = 0;
6868
6869 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6870 restricted |= NETIF_F_ALL_TSO;
6871
6872 switch (vlan_get_protocol(skb)) {
6873 case htons(ETH_P_IP):
6874 if (!card->info.has_lp2lp_cso_v4)
6875 restricted |= NETIF_F_IP_CSUM;
6876
6877 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6878 features &= ~restricted;
6879 break;
6880 case htons(ETH_P_IPV6):
6881 if (!card->info.has_lp2lp_cso_v6)
6882 restricted |= NETIF_F_IPV6_CSUM;
6883
6884 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6885 features &= ~restricted;
6886 break;
6887 default:
6888 break;
6889 }
6890 }
6891
6d69b1f1
JW		 6892 /* GSO segmentation builds skbs with
6893 * a (small) linear part for the headers, and
6894 * page frags for the data.
6895 * Compared to a linear skb, the header-only part consumes an
6896 * additional buffer element. This reduces buffer utilization, and
6897 * hurts throughput. So compress small segments into one element.
6898 */
6899 if (netif_needs_gso(skb, features)) {
6900 /* match skb_segment(): */
6901 unsigned int doffset = skb->data - skb_mac_header(skb);
6902 unsigned int hsize = skb_shinfo(skb)->gso_size;
6903 unsigned int hroom = skb_headroom(skb);
6904
6905 /* linearize only if resulting skb allocations are order-0: */
6906 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6907 features &= ~NETIF_F_SG;
6908 }
6909
6910 return vlan_features_check(skb, features);
6911}
6912EXPORT_SYMBOL_GPL(qeth_features_check);
6913
b0abc4f5
JW		 6914void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6915{
6916 struct qeth_card *card = dev->ml_priv;
6917 struct qeth_qdio_out_q *queue;
6918 unsigned int i;
6919
6920 QETH_CARD_TEXT(card, 5, "getstat");
6921
6922 stats->rx_packets = card->stats.rx_packets;
6923 stats->rx_bytes = card->stats.rx_bytes;
845ef904 6924 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 6925 card->stats.rx_frame_errors +
845ef904
JW		 6926 card->stats.rx_fifo_errors;
6927 stats->rx_dropped = card->stats.rx_dropped_nomem +
5b55633f
JW		 6928 card->stats.rx_dropped_notsupp +
6929 card->stats.rx_dropped_runt;
b0abc4f5 6930 stats->multicast = card->stats.rx_multicast;
845ef904 6931 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 6932 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 6933 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 6934
6935 for (i = 0; i < card->qdio.no_out_queues; i++) {
6936 queue = card->qdio.out_qs[i];
6937
6938 stats->tx_packets += queue->stats.tx_packets;
6939 stats->tx_bytes += queue->stats.tx_bytes;
6940 stats->tx_errors += queue->stats.tx_errors;
6941 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 6942 }
6943}
6944EXPORT_SYMBOL_GPL(qeth_get_stats64);
6945
5d8ce41c
JW		 6946#define TC_IQD_UCAST 0
6947static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
6948 unsigned int ucast_txqs)
6949{
6950 unsigned int prio;
6951
6952 /* IQD requires mcast traffic to be placed on a dedicated queue, and
6953 * qeth_iqd_select_queue() deals with this.
6954 * For unicast traffic, we defer the queue selection to the stack.
6955 * By installing a trivial prio map that spans over only the unicast
6956 * queues, we can encourage the stack to spread the ucast traffic evenly
6957 * without selecting the mcast queue.
6958 */
6959
6960 /* One traffic class, spanning over all active ucast queues: */
6961 netdev_set_num_tc(dev, 1);
6962 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
6963 QETH_IQD_MIN_UCAST_TXQ);
6964
6965 /* Map all priorities to this traffic class: */
6966 for (prio = 0; prio <= TC_BITMASK; prio++)
6967 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
6968}
6969
6970int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
6971{
6972 struct net_device *dev = card->dev;
6973 int rc;
6974
6975 /* Per netif_setup_tc(), adjust the mapping first: */
6976 if (IS_IQD(card))
6977 qeth_iqd_set_prio_tc_map(dev, count - 1);
6978
6979 rc = netif_set_real_num_tx_queues(dev, count);
6980
6981 if (rc && IS_IQD(card))
6982 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
6983
6984 return rc;
6985}
bb5ab541 6986EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
5d8ce41c 6987
3a18d754
JW		 6988u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6989 u8 cast_type, struct net_device *sb_dev)
6990{
66cddf10
JW		 6991 u16 txq;
6992
3a18d754
JW		 6993 if (cast_type != RTN_UNICAST)
6994 return QETH_IQD_MCAST_TXQ;
5d8ce41c
JW		 6995 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
6996 return QETH_IQD_MIN_UCAST_TXQ;
66cddf10
JW		 6997
6998 txq = netdev_pick_tx(dev, skb, sb_dev);
6999 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
3a18d754
JW		 7000}
7001EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7002
1b9e410f
JW		 7003u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
7004 struct net_device *sb_dev)
7005{
7006 struct qeth_card *card = dev->ml_priv;
7007
7008 if (qeth_uses_tx_prio_queueing(card))
7009 return qeth_get_priority_queue(card, skb);
7010
7011 return netdev_pick_tx(dev, skb, sb_dev);
7012}
7013EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
7014
e6e771b3 7015int qeth_open(struct net_device *dev)
e22355ea
JW		 7016{
7017 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7018 struct qeth_qdio_out_q *queue;
7019 unsigned int i;
e22355ea
JW		 7020
7021 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea 7022
e22355ea 7023 card->data.state = CH_STATE_UP;
3a18d754 7024 netif_tx_start_all_queues(dev);
e22355ea 7025
e22355ea 7026 local_bh_disable();
7a4b92e8 7027 qeth_for_each_output_queue(card, queue, i) {
16d083e2 7028 netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll);
7a4b92e8
JW		 7029 napi_enable(&queue->napi);
7030 napi_schedule(&queue->napi);
e53edf74 7031 }
3e83d467
JW		 7032
7033 napi_enable(&card->napi);
7034 napi_schedule(&card->napi);
e22355ea
JW		 7035 /* kick-start the NAPI softirq: */
7036 local_bh_enable();
3e83d467 7037
e22355ea
JW		 7038 return 0;
7039}
e22355ea
JW		 7040EXPORT_SYMBOL_GPL(qeth_open);
7041
7042int qeth_stop(struct net_device *dev)
7043{
7044 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7045 struct qeth_qdio_out_q *queue;
7046 unsigned int i;
e22355ea
JW		 7047
7048 QETH_CARD_TEXT(card, 4, "qethstop");
3e83d467
JW		 7049
7050 napi_disable(&card->napi);
7051 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7052 qdio_stop_irq(CARD_DDEV(card));
7053
7a4b92e8
JW		 7054 /* Quiesce the NAPI instances: */
7055 qeth_for_each_output_queue(card, queue, i)
7056 napi_disable(&queue->napi);
e53edf74 7057
7a4b92e8
JW		 7058 /* Stop .ndo_start_xmit, might still access queue->napi. */
7059 netif_tx_disable(dev);
e53edf74 7060
7a4b92e8
JW		 7061 qeth_for_each_output_queue(card, queue, i) {
7062 del_timer_sync(&queue->timer);
7063 /* Queues may get re-allocated, so remove the NAPIs. */
7064 netif_napi_del(&queue->napi);
e53edf74
JW		 7065 }
7066
e22355ea
JW		 7067 return 0;
7068}
7069EXPORT_SYMBOL_GPL(qeth_stop);
7070
4a71df50
FB		 7071static int __init qeth_core_init(void)
7072{
7073 int rc;
7074
74eacdb9 7075 pr_info("loading core functions\n");
4a71df50 7076
fb8d2580
JW		 7077 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7078
4a71df50
FB		 7079 rc = qeth_register_dbf_views();
7080 if (rc)
a936b1ef 7081 goto dbf_err;
035da16f 7082 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 7083 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 7084 if (rc)
7085 goto register_err;
55494264
JW		 7086 qeth_core_header_cache =
7087 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7088 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7089 0, NULL);
683d718a
FB		 7090 if (!qeth_core_header_cache) {
7091 rc = -ENOMEM;
7092 goto slab_err;
7093 }
0da9581d
EL		 7094 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7095 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7096 if (!qeth_qdio_outbuf_cache) {
7097 rc = -ENOMEM;
7098 goto cqslab_err;
7099 }
a18c28f0
JW		 7100
7101 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7102 sizeof(struct qaob),
7103 sizeof(struct qaob),
7104 0, NULL);
7105 if (!qeth_qaob_cache) {
7106 rc = -ENOMEM;
7107 goto qaob_err;
7108 }
7109
afb6ac59
SO		 7110 rc = ccw_driver_register(&qeth_ccw_driver);
7111 if (rc)
7112 goto ccw_err;
afb6ac59
SO		 7113 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7114 if (rc)
7115 goto ccwgroup_err;
0da9581d 7116
683d718a 7117 return 0;
afb6ac59
SO		 7118
7119ccwgroup_err:
7120 ccw_driver_unregister(&qeth_ccw_driver);
7121ccw_err:
a18c28f0
JW		 7122 kmem_cache_destroy(qeth_qaob_cache);
7123qaob_err:
afb6ac59 7124 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 7125cqslab_err:
7126 kmem_cache_destroy(qeth_core_header_cache);
683d718a 7127slab_err:
035da16f 7128 root_device_unregister(qeth_core_root_dev);
4a71df50 7129register_err:
4a71df50 7130 qeth_unregister_dbf_views();
a936b1ef 7131dbf_err:
fb8d2580 7132 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7133 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 7134 return rc;
7135}
7136
7137static void __exit qeth_core_exit(void)
7138{
819dc537 7139 qeth_clear_dbf_list();
4a71df50
FB		 7140 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7141 ccw_driver_unregister(&qeth_ccw_driver);
a18c28f0 7142 kmem_cache_destroy(qeth_qaob_cache);
0da9581d 7143 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 7144 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 7145 root_device_unregister(qeth_core_root_dev);
4a71df50 7146 qeth_unregister_dbf_views();
fb8d2580 7147 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7148 pr_info("core functions removed\n");
4a71df50
FB		 7149}
7150
7151module_init(qeth_core_init);
7152module_exit(qeth_core_exit);
7153MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7154MODULE_DESCRIPTION("qeth core functions");
7155MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)