projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'platform-drivers-x86-v6.9-3' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-block.git] / drivers / s390 / net / qeth_core_main.c
CommitLineData
ab9953ff 1// SPDX-License-Identifier: GPL-2.0
4a71df50 2/*
bbcfcdc8 3 * Copyright IBM Corp. 2007, 2009
4a71df50
FB		 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
74eacdb9
FB		 10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
0d55303c 13#include <linux/compat.h>
4a71df50
FB		 14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/string.h>
17#include <linux/errno.h>
18#include <linux/kernel.h>
55494264 19#include <linux/log2.h>
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;
525b7d2e 429 ccw->cda = virt_to_dma32(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
afb373ff
AW		 1182/**
1183 * qeth_irq() - qeth interrupt handler
1184 * @cdev: ccw device
1185 * @intparm: expect pointer to iob
1186 * @irb: Interruption Response Block
1187 *
1188 * In the good path:
1189 * corresponding qeth channel is locked with last used iob as active_cmd.
1190 * But this function is also called for error interrupts.
1191 *
1192 * Caller ensures that:
1193 * Interrupts are disabled; ccw device lock is held;
1194 *
1195 */
4a71df50
FB		 1196static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1197 struct irb *irb)
1198{
1199 int rc;
1200 int cstat, dstat;
db71bbbd 1201 struct qeth_cmd_buffer *iob = NULL;
8d908eb0 1202 struct ccwgroup_device *gdev;
4a71df50
FB		 1203 struct qeth_channel *channel;
1204 struct qeth_card *card;
4a71df50 1205
8d908eb0
JW		 1206 /* while we hold the ccwdev lock, this stays valid: */
1207 gdev = dev_get_drvdata(&cdev->dev);
1208 card = dev_get_drvdata(&gdev->dev);
4a71df50 1209
847a50fd
CO		 1210 QETH_CARD_TEXT(card, 5, "irq");
1211
4a71df50
FB		 1212 if (card->read.ccwdev == cdev) {
1213 channel = &card->read;
847a50fd 1214 QETH_CARD_TEXT(card, 5, "read");
4a71df50
FB		 1215 } else if (card->write.ccwdev == cdev) {
1216 channel = &card->write;
847a50fd 1217 QETH_CARD_TEXT(card, 5, "write");
4a71df50
FB		 1218 } else {
1219 channel = &card->data;
847a50fd 1220 QETH_CARD_TEXT(card, 5, "data");
4a71df50 1221 }
db71bbbd 1222
f9e50b02
JW		 1223 if (intparm == 0) {
1224 QETH_CARD_TEXT(card, 5, "irqunsol");
1225 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1226 QETH_CARD_TEXT(card, 5, "irqunexp");
1227
1228 dev_err(&cdev->dev,
1229 "Received IRQ with intparm %lx, expected %px\n",
1230 intparm, channel->active_cmd);
1231 if (channel->active_cmd)
1232 qeth_cancel_cmd(channel->active_cmd, -EIO);
1233 } else {
1234 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1235 }
1236
2066e1db 1237 rc = qeth_check_irb_error(card, cdev, irb);
54daaca7 1238 if (rc) {
db71bbbd 1239 /* IO was terminated, free its resources. */
afb373ff 1240 qeth_unlock_channel(card, channel);
db71bbbd 1241 if (iob)
54daaca7 1242 qeth_cancel_cmd(iob, rc);
db71bbbd
JW		 1243 return;
1244 }
1245
7359393f 1246 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
4a71df50 1247 channel->state = CH_STATE_STOPPED;
7359393f
JW		 1248 wake_up(&card->wait_q);
1249 }
4a71df50 1250
7359393f 1251 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
4a71df50 1252 channel->state = CH_STATE_HALTED;
7359393f
JW		 1253 wake_up(&card->wait_q);
1254 }
4a71df50 1255
f9e50b02
JW		 1256 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1257 SCSW_FCTL_HALT_FUNC))) {
1258 qeth_cancel_cmd(iob, -ECANCELED);
1259 iob = NULL;
4a71df50 1260 }
db71bbbd
JW		 1261
1262 cstat = irb->scsw.cmd.cstat;
1263 dstat = irb->scsw.cmd.dstat;
1264
4a71df50
FB		 1265 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1266 (dstat & DEV_STAT_UNIT_CHECK) ||
1267 (cstat)) {
1268 if (irb->esw.esw0.erw.cons) {
74eacdb9
FB		 1269 dev_warn(&channel->ccwdev->dev,
1270 "The qeth device driver failed to recover "
1271 "an error on the device\n");
e19e5be8
JW		 1272 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1273 CCW_DEVID(channel->ccwdev), cstat,
1274 dstat);
4a71df50
FB		 1275 print_hex_dump(KERN_WARNING, "qeth: irb ",
1276 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1277 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1278 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1279 }
2066e1db 1280
8d908eb0 1281 rc = qeth_get_problem(card, cdev, irb);
4a71df50 1282 if (rc) {
a6c3d939 1283 card->read_or_write_problem = 1;
afb373ff 1284 qeth_unlock_channel(card, channel);
5065b2dd 1285 if (iob)
54daaca7 1286 qeth_cancel_cmd(iob, rc);
28a7e4c9 1287 qeth_clear_ipacmd_list(card);
4a71df50 1288 qeth_schedule_recovery(card);
7359393f 1289 return;
4a71df50
FB		 1290 }
1291 }
1292
afb373ff
AW		 1293 if (scsw_cmd_is_valid_cc(&irb->scsw) && irb->scsw.cmd.cc == 1 && iob) {
1294 /* channel command hasn't started: retry.
1295 * active_cmd is still set to last iob
1296 */
1297 QETH_CARD_TEXT(card, 2, "irqcc1");
1298 rc = ccw_device_start_timeout(cdev, __ccw_from_cmd(iob),
1299 (addr_t)iob, 0, 0, iob->timeout);
1300 if (rc) {
1301 QETH_DBF_MESSAGE(2,
1302 "ccw retry on %x failed, rc = %i\n",
1303 CARD_DEVID(card), rc);
1304 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1305 qeth_unlock_channel(card, channel);
1306 qeth_cancel_cmd(iob, rc);
1307 }
1308 return;
1309 }
1310
1311 qeth_unlock_channel(card, channel);
1312
12fc286f
JW		 1313 if (iob) {
1314 /* sanity check: */
1315 if (irb->scsw.cmd.count > iob->length) {
1316 qeth_cancel_cmd(iob, -EIO);
7359393f 1317 return;
12fc286f
JW		 1318 }
1319 if (iob->callback)
1320 iob->callback(card, iob,
1321 iob->length - irb->scsw.cmd.count);
1322 }
4a71df50
FB		 1323}
1324
b3332930 1325static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
0da9581d 1326 struct qeth_qdio_out_buffer *buf,
b3332930 1327 enum iucv_tx_notify notification)
4a71df50 1328{
4a71df50
FB		 1329 struct sk_buff *skb;
1330
dc149e37 1331 skb_queue_walk(&buf->skb_list, skb) {
80bc97aa
JW		 1332 struct sock *sk = skb->sk;
1333
b3332930
FB		 1334 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1335 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
80bc97aa
JW		 1336 if (sk && sk->sk_family == PF_IUCV)
1337 iucv_sk(sk)->sk_txnotify(sk, notification);
b3332930 1338 }
b3332930
FB		 1339}
1340
6b7ec41e
JW		 1341static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1342 struct qeth_qdio_out_buffer *buf, bool error,
85e537d8 1343 int budget)
b3332930 1344{
104b4859
JW		 1345 struct sk_buff *skb;
1346
eeac0e20
JW		 1347 /* Empty buffer? */
1348 if (buf->next_element_to_fill == 0)
1349 return;
1350
1351 QETH_TXQ_STAT_INC(queue, bufs);
1352 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1ab2f8c6
JW		 1353 if (error) {
1354 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1355 } else {
1356 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1357 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1358 }
1359
eeac0e20
JW		 1360 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1361 unsigned int bytes = qdisc_pkt_len(skb);
1362 bool is_tso = skb_is_gso(skb);
1363 unsigned int packets;
1364
1365 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1ab2f8c6 1366 if (!error) {
eeac0e20
JW		 1367 if (skb->ip_summed == CHECKSUM_PARTIAL)
1368 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1369 if (skb_is_nonlinear(skb))
1370 QETH_TXQ_STAT_INC(queue, skbs_sg);
1371 if (is_tso) {
1372 QETH_TXQ_STAT_INC(queue, skbs_tso);
1373 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1374 }
1375 }
6a3123d0 1376
85e537d8 1377 napi_consume_skb(skb, budget);
eeac0e20 1378 }
b3332930
FB		 1379}
1380
1381static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
eeac0e20 1382 struct qeth_qdio_out_buffer *buf,
85e537d8 1383 bool error, int budget)
b3332930
FB		 1384{
1385 int i;
1386
1387 /* is PCI flag set on buffer? */
e872d0c1 1388 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
b3332930 1389 atomic_dec(&queue->set_pci_flags_count);
e872d0c1
JW		 1390 QETH_TXQ_STAT_INC(queue, completion_irq);
1391 }
b3332930 1392
6b7ec41e 1393 qeth_tx_complete_buf(queue, buf, error, budget);
3b346c18 1394
4e26c5fe 1395 for (i = 0; i < queue->max_elements; ++i) {
525b7d2e 1396 void *data = dma64_to_virt(buf->buffer->element[i].addr);
2db01da8 1397
bb7032dd 1398 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
2db01da8 1399 kmem_cache_free(qeth_core_header_cache, data);
4a71df50 1400 }
3b346c18 1401
4e26c5fe 1402 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
4a71df50 1403 buf->next_element_to_fill = 0;
1ab2f8c6 1404 buf->frames = 0;
96bd6c94 1405 buf->bytes = 0;
3b346c18 1406 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
0da9581d
EL		 1407}
1408
396c1004
JW		 1409static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1410{
1411 if (buf->aob)
a18c28f0 1412 kmem_cache_free(qeth_qaob_cache, buf->aob);
396c1004
JW		 1413 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1414}
1415
c20383ad
JW		 1416static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1417 struct qeth_qdio_out_q *queue,
ad4bbd72 1418 bool drain, int budget)
c20383ad
JW		 1419{
1420 struct qeth_qdio_out_buffer *buf, *tmp;
1421
1422 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
838e4cc8 1423 struct qeth_qaob_priv1 *priv;
f875d880
JW		 1424 struct qaob *aob = buf->aob;
1425 enum iucv_tx_notify notify;
1426 unsigned int i;
1427
838e4cc8
JW		 1428 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1429 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
c20383ad
JW		 1430 QETH_CARD_TEXT(card, 5, "fp");
1431 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1432
f875d880
JW		 1433 notify = drain ? TX_NOTIFY_GENERALERROR :
1434 qeth_compute_cq_notification(aob->aorc, 1);
1435 qeth_notify_skbs(queue, buf, notify);
6b7ec41e 1436 qeth_tx_complete_buf(queue, buf, drain, budget);
c20383ad 1437
f875d880
JW		 1438 for (i = 0;
1439 i < aob->sb_count && i < queue->max_elements;
1440 i++) {
9ff91a33 1441 void *data = dma64_to_virt(aob->sba[i]);
f875d880 1442
bb7032dd 1443 if (test_bit(i, buf->from_kmem_cache) && data)
f875d880
JW		 1444 kmem_cache_free(qeth_core_header_cache,
1445 data);
1446 }
1447
c20383ad 1448 list_del(&buf->list_entry);
396c1004 1449 qeth_free_out_buf(buf);
c20383ad
JW		 1450 }
1451 }
1452}
1453
41c47da3 1454static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
0da9581d
EL		 1455{
1456 int j;
1457
ad4bbd72 1458 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
c20383ad 1459
0da9581d
EL		 1460 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1461 if (!q->bufs[j])
1462 continue;
c20383ad 1463
85e537d8 1464 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
0da9581d 1465 if (free) {
396c1004 1466 qeth_free_out_buf(q->bufs[j]);
0da9581d
EL		 1467 q->bufs[j] = NULL;
1468 }
1469 }
4a71df50
FB		 1470}
1471
f2bcf9dd 1472static void qeth_drain_output_queues(struct qeth_card *card)
4a71df50 1473{
0da9581d 1474 int i;
4a71df50 1475
847a50fd 1476 QETH_CARD_TEXT(card, 2, "clearqdbf");
4a71df50 1477 /* clear outbound buffers to free skbs */
0da9581d 1478 for (i = 0; i < card->qdio.no_out_queues; ++i) {
41c47da3
JW		 1479 if (card->qdio.out_qs[i])
1480 qeth_drain_output_queue(card->qdio.out_qs[i], false);
0da9581d 1481 }
4a71df50 1482}
4a71df50 1483
bb5ab541 1484static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
725b9c04 1485{
1c103cf8 1486 unsigned int max = single ? 1 : card->dev->num_tx_queues;
bd966839 1487
1c103cf8 1488 if (card->qdio.no_out_queues == max)
bb5ab541 1489 return;
725b9c04 1490
73dc2daf 1491 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
41c47da3 1492 qeth_free_qdio_queues(card);
73dc2daf 1493
1c103cf8 1494 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
73dc2daf
JW		 1495 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1496
1c103cf8 1497 card->qdio.no_out_queues = max;
725b9c04
SO		 1498}
1499
a4cdc9ba 1500static int qeth_update_from_chp_desc(struct qeth_card *card)
4a71df50 1501{
4a71df50 1502 struct ccw_device *ccwdev;
ded27d8d 1503 struct channel_path_desc_fmt0 *chp_dsc;
4a71df50 1504
57a688aa 1505 QETH_CARD_TEXT(card, 2, "chp_desc");
4a71df50
FB		 1506
1507 ccwdev = card->data.ccwdev;
725b9c04
SO		 1508 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1509 if (!chp_dsc)
a4cdc9ba 1510 return -ENOMEM;
725b9c04
SO		 1511
1512 card->info.func_level = 0x4100 + chp_dsc->desc;
725b9c04 1513
73dc2daf
JW		 1514 if (IS_OSD(card) || IS_OSX(card))
1515 /* CHPP field bit 6 == 1 -> single queue */
bb5ab541 1516 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
73dc2daf 1517
725b9c04 1518 kfree(chp_dsc);
57a688aa
JW		 1519 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1520 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
bb5ab541 1521 return 0;
4a71df50
FB		 1522}
1523
1524static void qeth_init_qdio_info(struct qeth_card *card)
1525{
57a688aa 1526 QETH_CARD_TEXT(card, 4, "intqdinf");
4a71df50 1527 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
95f4d8b7
JW		 1528 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1529 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
95f4d8b7 1530
4a71df50
FB		 1531 /* inbound */
1532 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
379ac99e 1533 if (IS_IQD(card))
dcf4ae2d
FB		 1534 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1535 else
1536 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
4a71df50
FB		 1537 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1538 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1539 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1540}
1541
95f4d8b7 1542static void qeth_set_initial_options(struct qeth_card *card)
4a71df50
FB		 1543{
1544 card->options.route4.type = NO_ROUTER;
1545 card->options.route6.type = NO_ROUTER;
d64ecc22 1546 card->options.isolation = ISOLATION_MODE_NONE;
0da9581d 1547 card->options.cq = QETH_CQ_DISABLED;
4fda3354 1548 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
4a71df50
FB		 1549}
1550
1551static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1552{
1553 unsigned long flags;
1554 int rc = 0;
1555
1556 spin_lock_irqsave(&card->thread_mask_lock, flags);
847a50fd 1557 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
4a71df50
FB		 1558 (u8) card->thread_start_mask,
1559 (u8) card->thread_allowed_mask,
1560 (u8) card->thread_running_mask);
1561 rc = (card->thread_start_mask & thread);
1562 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1563 return rc;
1564}
1565
91003f35 1566static int qeth_do_reset(void *data);
4a71df50
FB		 1567static void qeth_start_kernel_thread(struct work_struct *work)
1568{
3f36b890 1569 struct task_struct *ts;
4a71df50
FB		 1570 struct qeth_card *card = container_of(work, struct qeth_card,
1571 kernel_thread_starter);
378ac80d 1572 QETH_CARD_TEXT(card, 2, "strthrd");
4a71df50
FB		 1573
1574 if (card->read.state != CH_STATE_UP &&
1575 card->write.state != CH_STATE_UP)
1576 return;
3f36b890 1577 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
91003f35 1578 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
3f36b890
FB		 1579 if (IS_ERR(ts)) {
1580 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1581 qeth_clear_thread_running_bit(card,
1582 QETH_RECOVER_THREAD);
1583 }
1584 }
4a71df50
FB		 1585}
1586
bca51650 1587static void qeth_buffer_reclaim_work(struct work_struct *);
95f4d8b7 1588static void qeth_setup_card(struct qeth_card *card)
4a71df50 1589{
57a688aa 1590 QETH_CARD_TEXT(card, 2, "setupcrd");
4a71df50 1591
95f4d8b7 1592 card->info.type = CARD_RDEV(card)->id.driver_info;
4a71df50 1593 card->state = CARD_STATE_DOWN;
4a71df50 1594 spin_lock_init(&card->lock);
4a71df50 1595 spin_lock_init(&card->thread_mask_lock);
c4949f07 1596 mutex_init(&card->conf_mutex);
9dc48ccc 1597 mutex_init(&card->discipline_mutex);
4a71df50 1598 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
4a71df50
FB		 1599 INIT_LIST_HEAD(&card->cmd_waiter_list);
1600 init_waitqueue_head(&card->wait_q);
95f4d8b7 1601 qeth_set_initial_options(card);
4a71df50
FB		 1602 /* IP address takeover */
1603 INIT_LIST_HEAD(&card->ipato.entries);
4a71df50 1604 qeth_init_qdio_info(card);
b3332930 1605 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
0973292f 1606 hash_init(card->rx_mode_addrs);
0d49c06b
JW		 1607 hash_init(card->local_addrs4);
1608 hash_init(card->local_addrs6);
1609 spin_lock_init(&card->local_addrs4_lock);
1610 spin_lock_init(&card->local_addrs6_lock);
4a71df50
FB		 1611}
1612
6bcac508
MS		 1613static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1614{
1615 struct qeth_card *card = container_of(slr, struct qeth_card,
1616 qeth_service_level);
0d788c7d
KDW		 1617 if (card->info.mcl_level[0])
1618 seq_printf(m, "qeth: %s firmware level %s\n",
1619 CARD_BUS_ID(card), card->info.mcl_level);
6bcac508
MS		 1620}
1621
121ca39a 1622static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
4a71df50
FB		 1623{
1624 struct qeth_card *card;
1625
d11ba0c4 1626 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
f15cdaf2 1627 card = kzalloc(sizeof(*card), GFP_KERNEL);
4a71df50 1628 if (!card)
76b11f8e 1629 goto out;
d11ba0c4 1630 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
121ca39a
JW		 1631
1632 card->gdev = gdev;
a2eb0ad5 1633 dev_set_drvdata(&gdev->dev, card);
121ca39a
JW		 1634 CARD_RDEV(card) = gdev->cdev[0];
1635 CARD_WDEV(card) = gdev->cdev[1];
1636 CARD_DDEV(card) = gdev->cdev[2];
c0a2e4d1 1637
7686e4b6
JW		 1638 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1639 dev_name(&gdev->dev));
c0a2e4d1
JW		 1640 if (!card->event_wq)
1641 goto out_wq;
d9b9f40b
JW		 1642
1643 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1644 if (!card->read_cmd)
1645 goto out_read_cmd;
c3b2218d 1646
fb8d2580
JW		 1647 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1648 qeth_debugfs_root);
1649 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1650 &qeth_debugfs_local_addr_fops);
1651
6bcac508
MS		 1652 card->qeth_service_level.seq_print = qeth_core_sl_print;
1653 register_service_level(&card->qeth_service_level);
4a71df50 1654 return card;
76b11f8e 1655
d9b9f40b 1656out_read_cmd:
c0a2e4d1
JW		 1657 destroy_workqueue(card->event_wq);
1658out_wq:
a2eb0ad5 1659 dev_set_drvdata(&gdev->dev, NULL);
76b11f8e
UB		 1660 kfree(card);
1661out:
1662 return NULL;
4a71df50
FB		 1663}
1664
8d908eb0
JW		 1665static int qeth_clear_channel(struct qeth_card *card,
1666 struct qeth_channel *channel)
4a71df50 1667{
4a71df50
FB		 1668 int rc;
1669
847a50fd 1670 QETH_CARD_TEXT(card, 3, "clearch");
ed47155b 1671 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1672 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1673 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1674
1675 if (rc)
1676 return rc;
1677 rc = wait_event_interruptible_timeout(card->wait_q,
1678 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1679 if (rc == -ERESTARTSYS)
1680 return rc;
1681 if (channel->state != CH_STATE_STOPPED)
1682 return -ETIME;
1683 channel->state = CH_STATE_DOWN;
1684 return 0;
1685}
1686
8d908eb0
JW		 1687static int qeth_halt_channel(struct qeth_card *card,
1688 struct qeth_channel *channel)
4a71df50 1689{
4a71df50
FB		 1690 int rc;
1691
847a50fd 1692 QETH_CARD_TEXT(card, 3, "haltch");
ed47155b 1693 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
f9e50b02 1694 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
ed47155b 1695 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50
FB		 1696
1697 if (rc)
1698 return rc;
1699 rc = wait_event_interruptible_timeout(card->wait_q,
1700 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1701 if (rc == -ERESTARTSYS)
1702 return rc;
1703 if (channel->state != CH_STATE_HALTED)
1704 return -ETIME;
1705 return 0;
1706}
1707
b7ea041b 1708static int qeth_stop_channel(struct qeth_channel *channel)
f9e50b02
JW		 1709{
1710 struct ccw_device *cdev = channel->ccwdev;
1711 int rc;
1712
1713 rc = ccw_device_set_offline(cdev);
1714
1715 spin_lock_irq(get_ccwdev_lock(cdev));
3518ae76 1716 if (channel->active_cmd)
f9e50b02
JW		 1717 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1718 channel->active_cmd);
3518ae76 1719
871602b1 1720 cdev->handler = NULL;
f9e50b02
JW		 1721 spin_unlock_irq(get_ccwdev_lock(cdev));
1722
1723 return rc;
1724}
f9e50b02 1725
871602b1
JW		 1726static int qeth_start_channel(struct qeth_channel *channel)
1727{
1728 struct ccw_device *cdev = channel->ccwdev;
1729 int rc;
1730
1731 channel->state = CH_STATE_DOWN;
3518ae76 1732 xchg(&channel->active_cmd, NULL);
871602b1
JW		 1733
1734 spin_lock_irq(get_ccwdev_lock(cdev));
1735 cdev->handler = qeth_irq;
1736 spin_unlock_irq(get_ccwdev_lock(cdev));
1737
1738 rc = ccw_device_set_online(cdev);
1739 if (rc)
1740 goto err;
1741
1742 return 0;
1743
1744err:
1745 spin_lock_irq(get_ccwdev_lock(cdev));
1746 cdev->handler = NULL;
1747 spin_unlock_irq(get_ccwdev_lock(cdev));
1748 return rc;
1749}
1750
4a71df50
FB		 1751static int qeth_halt_channels(struct qeth_card *card)
1752{
1753 int rc1 = 0, rc2 = 0, rc3 = 0;
1754
847a50fd 1755 QETH_CARD_TEXT(card, 3, "haltchs");
8d908eb0
JW		 1756 rc1 = qeth_halt_channel(card, &card->read);
1757 rc2 = qeth_halt_channel(card, &card->write);
1758 rc3 = qeth_halt_channel(card, &card->data);
4a71df50
FB		 1759 if (rc1)
1760 return rc1;
1761 if (rc2)
1762 return rc2;
1763 return rc3;
1764}
1765
1766static int qeth_clear_channels(struct qeth_card *card)
1767{
1768 int rc1 = 0, rc2 = 0, rc3 = 0;
1769
847a50fd 1770 QETH_CARD_TEXT(card, 3, "clearchs");
8d908eb0
JW		 1771 rc1 = qeth_clear_channel(card, &card->read);
1772 rc2 = qeth_clear_channel(card, &card->write);
1773 rc3 = qeth_clear_channel(card, &card->data);
4a71df50
FB		 1774 if (rc1)
1775 return rc1;
1776 if (rc2)
1777 return rc2;
1778 return rc3;
1779}
1780
1781static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1782{
1783 int rc = 0;
1784
847a50fd 1785 QETH_CARD_TEXT(card, 3, "clhacrd");
4a71df50
FB		 1786
1787 if (halt)
1788 rc = qeth_halt_channels(card);
1789 if (rc)
1790 return rc;
1791 return qeth_clear_channels(card);
1792}
1793
f2bcf9dd 1794static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
4a71df50
FB		 1795{
1796 int rc = 0;
1797
847a50fd 1798 QETH_CARD_TEXT(card, 3, "qdioclr");
4a71df50
FB		 1799 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1800 QETH_QDIO_CLEANING)) {
1801 case QETH_QDIO_ESTABLISHED:
379ac99e 1802 if (IS_IQD(card))
cc961d40 1803 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1804 QDIO_FLAG_CLEANUP_USING_HALT);
1805 else
cc961d40 1806 rc = qdio_shutdown(CARD_DDEV(card),
4a71df50
FB		 1807 QDIO_FLAG_CLEANUP_USING_CLEAR);
1808 if (rc)
847a50fd 1809 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
4a71df50
FB		 1810 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1811 break;
1812 case QETH_QDIO_CLEANING:
1813 return rc;
1814 default:
1815 break;
1816 }
1817 rc = qeth_clear_halt_card(card, use_halt);
1818 if (rc)
847a50fd 1819 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
4a71df50
FB		 1820 return rc;
1821}
4a71df50 1822
615dff22
JW		 1823static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1824{
1825 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1826 struct diag26c_vnic_resp *response = NULL;
1827 struct diag26c_vnic_req *request = NULL;
1828 struct ccw_dev_id id;
1829 char userid[80];
1830 int rc = 0;
1831
57a688aa 1832 QETH_CARD_TEXT(card, 2, "vmlayer");
615dff22
JW		 1833
1834 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1835 if (rc)
1836 goto out;
1837
1838 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1839 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1840 if (!request || !response) {
1841 rc = -ENOMEM;
1842 goto out;
1843 }
1844
1845 ccw_device_get_id(CARD_RDEV(card), &id);
1846 request->resp_buf_len = sizeof(*response);
1847 request->resp_version = DIAG26C_VERSION6_VM65918;
1848 request->req_format = DIAG26C_VNIC_INFO;
1849 ASCEBC(userid, 8);
1850 memcpy(&request->sys_name, userid, 8);
1851 request->devno = id.devno;
1852
1853 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1854 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1855 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1856 if (rc)
1857 goto out;
1858 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1859
1860 if (request->resp_buf_len < sizeof(*response) ||
1861 response->version != request->resp_version) {
1862 rc = -EIO;
1863 goto out;
1864 }
1865
1866 if (response->protocol == VNIC_INFO_PROT_L2)
1867 disc = QETH_DISCIPLINE_LAYER2;
1868 else if (response->protocol == VNIC_INFO_PROT_L3)
1869 disc = QETH_DISCIPLINE_LAYER3;
1870
1871out:
1872 kfree(response);
1873 kfree(request);
1874 if (rc)
57a688aa 1875 QETH_CARD_TEXT_(card, 2, "err%x", rc);
615dff22
JW		 1876 return disc;
1877}
1878
c70eb09d
JW		 1879/* Determine whether the device requires a specific layer discipline */
1880static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1881{
615dff22
JW		 1882 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1883
a8c7629c 1884 if (IS_OSM(card))
615dff22 1885 disc = QETH_DISCIPLINE_LAYER2;
379ac99e
JW		 1886 else if (IS_VM_NIC(card))
1887 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1888 qeth_vm_detect_layer(card);
615dff22
JW		 1889
1890 switch (disc) {
1891 case QETH_DISCIPLINE_LAYER2:
57a688aa 1892 QETH_CARD_TEXT(card, 3, "force l2");
615dff22
JW		 1893 break;
1894 case QETH_DISCIPLINE_LAYER3:
57a688aa 1895 QETH_CARD_TEXT(card, 3, "force l3");
615dff22
JW		 1896 break;
1897 default:
57a688aa 1898 QETH_CARD_TEXT(card, 3, "force no");
c70eb09d
JW		 1899 }
1900
615dff22 1901 return disc;
c70eb09d
JW		 1902}
1903
09ac887f 1904static void qeth_set_blkt_defaults(struct qeth_card *card)
a60389ab 1905{
57a688aa 1906 QETH_CARD_TEXT(card, 2, "cfgblkt");
a60389ab 1907
09ac887f 1908 if (card->info.use_v1_blkt) {
a60389ab
EL		 1909 card->info.blkt.time_total = 0;
1910 card->info.blkt.inter_packet = 0;
1911 card->info.blkt.inter_packet_jumbo = 0;
a0c98523
UB		 1912 } else {
1913 card->info.blkt.time_total = 250;
1914 card->info.blkt.inter_packet = 5;
1915 card->info.blkt.inter_packet_jumbo = 15;
a60389ab 1916 }
4a71df50
FB		 1917}
1918
7f23d55f 1919static void qeth_idx_init(struct qeth_card *card)
4a71df50 1920{
7f23d55f
JW		 1921 memset(&card->seqno, 0, sizeof(card->seqno));
1922
4a71df50
FB		 1923 card->token.issuer_rm_w = 0x00010103UL;
1924 card->token.cm_filter_w = 0x00010108UL;
1925 card->token.cm_connection_w = 0x0001010aUL;
1926 card->token.ulp_filter_w = 0x0001010bUL;
1927 card->token.ulp_connection_w = 0x0001010dUL;
4a71df50 1928
5113fec0
UB		 1929 switch (card->info.type) {
1930 case QETH_CARD_TYPE_IQD:
6298263a 1931 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
5113fec0
UB		 1932 break;
1933 case QETH_CARD_TYPE_OSD:
1934 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1935 break;
1936 default:
1937 break;
4a71df50
FB		 1938 }
1939}
1940
48ce6f89 1941static void qeth_idx_finalize_cmd(struct qeth_card *card,
c3b2218d 1942 struct qeth_cmd_buffer *iob)
48ce6f89 1943{
48ce6f89
JW		 1944 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1945 QETH_SEQ_NO_LENGTH);
1946 if (iob->channel == &card->write)
1947 card->seqno.trans_hdr++;
1948}
1949
4a71df50
FB		 1950static int qeth_peer_func_level(int level)
1951{
1952 if ((level & 0xff) == 8)
1953 return (level & 0xff) + 0x400;
1954 if (((level >> 8) & 3) == 1)
1955 return (level & 0xff) + 0x200;
1956 return level;
1957}
1958
48ce6f89 1959static void qeth_mpc_finalize_cmd(struct qeth_card *card,
c3b2218d 1960 struct qeth_cmd_buffer *iob)
4a71df50 1961{
c3b2218d 1962 qeth_idx_finalize_cmd(card, iob);
4a71df50 1963
4a71df50
FB		 1964 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1965 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1966 card->seqno.pdu_hdr++;
1967 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1968 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
48ce6f89 1969
48ce6f89 1970 iob->callback = qeth_release_buffer_cb;
4a71df50 1971}
4a71df50 1972
7f92316c
JW		 1973static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1974 struct qeth_cmd_buffer *reply)
1975{
1976 /* MPC cmds are issued strictly in sequence. */
1977 return !IS_IPA(reply->data);
1978}
1979
f19f8fd2 1980static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
94ae20f7 1981 const void *data,
f19f8fd2 1982 unsigned int data_length)
1273a800
JW		 1983{
1984 struct qeth_cmd_buffer *iob;
1985
f19f8fd2
JW		 1986 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1987 if (!iob)
1988 return NULL;
1989
1990 memcpy(iob->data, data, data_length);
1991 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1992 iob->data);
1993 iob->finalize = qeth_mpc_finalize_cmd;
7f92316c 1994 iob->match = qeth_mpc_match_reply;
1273a800
JW		 1995 return iob;
1996}
1997
efbbc1d5
EC		 1998/**
1999 * qeth_send_control_data() - send control command to the card
2000 * @card: qeth_card structure pointer
efbbc1d5
EC		 2001 * @iob: qeth_cmd_buffer pointer
2002 * @reply_cb: callback function pointer
7ffaef82
HC		 2003 * cb_card: pointer to the qeth_card structure
2004 * cb_reply: pointer to the qeth_reply structure
2005 * cb_cmd: pointer to the original iob for non-IPA
efbbc1d5
EC		 2006 * commands, or to the qeth_ipa_cmd structure
2007 * for the IPA commands.
2008 * @reply_param: private pointer passed to the callback
2009 *
efbbc1d5
EC		 2010 * Callback function gets called one or more times, with cb_cmd
2011 * pointing to the response returned by the hardware. Callback
742d4d40
JW		 2012 * function must return
2013 * > 0 if more reply blocks are expected,
2014 * 0 if the last or only reply block is received, and
2015 * < 0 on error.
2016 * Callback function can get the value of the reply_param pointer from the
efbbc1d5
EC		 2017 * field 'param' of the structure qeth_reply.
2018 */
2019
c3b2218d 2020static int qeth_send_control_data(struct qeth_card *card,
84dbea46
JW		 2021 struct qeth_cmd_buffer *iob,
2022 int (*reply_cb)(struct qeth_card *cb_card,
2023 struct qeth_reply *cb_reply,
2024 unsigned long cb_cmd),
2025 void *reply_param)
4a71df50 2026{
750b1625 2027 struct qeth_channel *channel = iob->channel;
308946b0 2028 struct qeth_reply *reply = &iob->reply;
782e4a79 2029 long timeout = iob->timeout;
4a71df50 2030 int rc;
4a71df50 2031
847a50fd 2032 QETH_CARD_TEXT(card, 2, "sendctl");
4a71df50 2033
4a71df50
FB		 2034 reply->callback = reply_cb;
2035 reply->param = reply_param;
d22ffb5a 2036
782e4a79 2037 timeout = wait_event_interruptible_timeout(card->wait_q,
3518ae76 2038 qeth_trylock_channel(channel, iob),
782e4a79
JW		 2039 timeout);
2040 if (timeout <= 0) {
c3b2218d 2041 qeth_put_cmd(iob);
782e4a79
JW		 2042 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2043 }
4a71df50 2044
2066e1db 2045 if (iob->finalize)
c3b2218d
JW		 2046 iob->finalize(card, iob);
2047 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
d22ffb5a 2048
308946b0 2049 qeth_enqueue_cmd(card, iob);
1c5b2216 2050
32e85a0d
JW		 2051 /* This pairs with iob->callback, and keeps the iob alive after IO: */
2052 qeth_get_cmd(iob);
2053
847a50fd 2054 QETH_CARD_TEXT(card, 6, "noirqpnd");
ed47155b 2055 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
40554895 2056 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
782e4a79 2057 (addr_t) iob, 0, 0, timeout);
ed47155b 2058 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
4a71df50 2059 if (rc) {
e19e5be8
JW		 2060 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2061 CARD_DEVID(card), rc);
847a50fd 2062 QETH_CARD_TEXT_(card, 2, " err%d", rc);
308946b0 2063 qeth_dequeue_cmd(card, iob);
c3b2218d 2064 qeth_put_cmd(iob);
7359393f 2065 qeth_unlock_channel(card, channel);
32e85a0d 2066 goto out;
4a71df50 2067 }
5b54e16f 2068
308946b0 2069 timeout = wait_for_completion_interruptible_timeout(&iob->done,
782e4a79
JW		 2070 timeout);
2071 if (timeout <= 0)
2072 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
5b54e16f 2073
308946b0 2074 qeth_dequeue_cmd(card, iob);
072f7940
JW		 2075
2076 if (reply_cb) {
2077 /* Wait until the callback for a late reply has completed: */
308946b0 2078 spin_lock_irq(&iob->lock);
072f7940
JW		 2079 if (rc)
2080 /* Zap any callback that's still pending: */
308946b0
JW		 2081 iob->rc = rc;
2082 spin_unlock_irq(&iob->lock);
072f7940
JW		 2083 }
2084
782e4a79 2085 if (!rc)
308946b0 2086 rc = iob->rc;
32e85a0d
JW		 2087
2088out:
32e85a0d 2089 qeth_put_cmd(iob);
5b54e16f 2090 return rc;
4a71df50 2091}
4a71df50 2092
afc1f67b
JW		 2093struct qeth_node_desc {
2094 struct node_descriptor nd1;
2095 struct node_descriptor nd2;
2096 struct node_descriptor nd3;
2097};
2098
2066e1db 2099static void qeth_read_conf_data_cb(struct qeth_card *card,
12fc286f
JW		 2100 struct qeth_cmd_buffer *iob,
2101 unsigned int data_length)
2066e1db 2102{
afc1f67b 2103 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
12fc286f 2104 int rc = 0;
afc1f67b 2105 u8 *tag;
2066e1db
JW		 2106
2107 QETH_CARD_TEXT(card, 2, "cfgunit");
12fc286f
JW		 2108
2109 if (data_length < sizeof(*nd)) {
2110 rc = -EINVAL;
2111 goto out;
2112 }
2113
afc1f67b
JW		 2114 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2115 nd->nd1.plant[1] == _ascebc['M'];
2116 tag = (u8 *)&nd->nd1.tag;
2117 card->info.chpid = tag[0];
2118 card->info.unit_addr2 = tag[1];
2119
2120 tag = (u8 *)&nd->nd2.tag;
2121 card->info.cula = tag[1];
2122
2123 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2124 nd->nd3.model[1] == 0xF0 &&
2125 nd->nd3.model[2] >= 0xF1 &&
2126 nd->nd3.model[2] <= 0xF4;
2066e1db 2127
12fc286f 2128out:
308946b0 2129 qeth_notify_cmd(iob, rc);
c3b2218d 2130 qeth_put_cmd(iob);
2066e1db
JW		 2131}
2132
2133static int qeth_read_conf_data(struct qeth_card *card)
2134{
2135 struct qeth_channel *channel = &card->data;
2136 struct qeth_cmd_buffer *iob;
2137 struct ciw *ciw;
2138
2139 /* scan for RCD command in extended SenseID data */
2140 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2141 if (!ciw || ciw->cmd == 0)
2142 return -EOPNOTSUPP;
afc1f67b
JW		 2143 if (ciw->count < sizeof(struct qeth_node_desc))
2144 return -EINVAL;
2066e1db
JW		 2145
2146 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2147 if (!iob)
2148 return -ENOMEM;
2149
2150 iob->callback = qeth_read_conf_data_cb;
2151 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2152 iob->data);
2153
c3b2218d 2154 return qeth_send_control_data(card, iob, NULL, NULL);
2066e1db
JW		 2155}
2156
2e873d10
JW		 2157static int qeth_idx_check_activate_response(struct qeth_card *card,
2158 struct qeth_channel *channel,
2159 struct qeth_cmd_buffer *iob)
2160{
2161 int rc;
2162
2163 rc = qeth_check_idx_response(card, iob->data);
2164 if (rc)
2165 return rc;
2166
2167 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2168 return 0;
2169
2170 /* negative reply: */
57a688aa
JW		 2171 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2172 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2e873d10
JW		 2173
2174 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2175 case QETH_IDX_ACT_ERR_EXCL:
2176 dev_err(&channel->ccwdev->dev,
2177 "The adapter is used exclusively by another host\n");
2178 return -EBUSY;
2179 case QETH_IDX_ACT_ERR_AUTH:
2180 case QETH_IDX_ACT_ERR_AUTH_USER:
2181 dev_err(&channel->ccwdev->dev,
2182 "Setting the device online failed because of insufficient authorization\n");
2183 return -EPERM;
2184 default:
2185 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2186 CCW_DEVID(channel->ccwdev));
2187 return -EIO;
2188 }
2189}
2190
f3b783b1 2191static void qeth_idx_activate_read_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, "idxrdcb");
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 != qeth_peer_func_level(card->info.func_level)) {
2207 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2208 CCW_DEVID(channel->ccwdev),
2209 card->info.func_level, peer_level);
2210 rc = -EINVAL;
2211 goto out;
2212 }
2213
2214 memcpy(&card->token.issuer_rm_r,
2215 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2216 QETH_MPC_TOKEN_LENGTH);
2217 memcpy(&card->info.mcl_level[0],
2218 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2219
2220out:
308946b0 2221 qeth_notify_cmd(iob, rc);
c3b2218d 2222 qeth_put_cmd(iob);
2e873d10
JW		 2223}
2224
f3b783b1 2225static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
12fc286f
JW		 2226 struct qeth_cmd_buffer *iob,
2227 unsigned int data_length)
2e873d10 2228{
fcda7f73 2229 struct qeth_channel *channel = iob->channel;
2e873d10
JW		 2230 u16 peer_level;
2231 int rc;
2232
57a688aa 2233 QETH_CARD_TEXT(card, 2, "idxwrcb");
2e873d10
JW		 2234
2235 rc = qeth_idx_check_activate_response(card, channel, iob);
2236 if (rc)
2237 goto out;
2238
2239 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2240 if ((peer_level & ~0x0100) !=
2241 qeth_peer_func_level(card->info.func_level)) {
2242 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2243 CCW_DEVID(channel->ccwdev),
2244 card->info.func_level, peer_level);
2245 rc = -EINVAL;
2246 }
2247
2248out:
308946b0 2249 qeth_notify_cmd(iob, rc);
c3b2218d 2250 qeth_put_cmd(iob);
2e873d10
JW		 2251}
2252
2e873d10
JW		 2253static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2254 struct qeth_cmd_buffer *iob)
2255{
2256 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2257 u8 port = ((u8)card->dev->dev_port) | 0x80;
f3b783b1 2258 struct ccw1 *ccw = __ccw_from_cmd(iob);
2e873d10 2259
f3b783b1
JW		 2260 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2261 iob->data);
2262 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2e873d10 2263 iob->finalize = qeth_idx_finalize_cmd;
2e873d10 2264
5fd3fcbb 2265 port |= QETH_IDX_ACT_INVAL_FRAME;
2e873d10
JW		 2266 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2267 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2268 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2269 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2270 &card->info.func_level, 2);
fa115adf 2271 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2e873d10
JW		 2272 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2273}
2274
2275static int qeth_idx_activate_read_channel(struct qeth_card *card)
2276{
2277 struct qeth_channel *channel = &card->read;
2278 struct qeth_cmd_buffer *iob;
2279 int rc;
2280
57a688aa 2281 QETH_CARD_TEXT(card, 2, "idxread");
2e873d10 2282
f3b783b1 2283 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2284 if (!iob)
2285 return -ENOMEM;
2286
2287 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2288 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2289 iob->callback = qeth_idx_activate_read_channel_cb;
2e873d10 2290
c3b2218d 2291 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2292 if (rc)
2293 return rc;
2294
2e873d10
JW		 2295 channel->state = CH_STATE_UP;
2296 return 0;
2297}
2298
2299static int qeth_idx_activate_write_channel(struct qeth_card *card)
2300{
2301 struct qeth_channel *channel = &card->write;
2302 struct qeth_cmd_buffer *iob;
2303 int rc;
2304
57a688aa 2305 QETH_CARD_TEXT(card, 2, "idxwrite");
2e873d10 2306
f3b783b1 2307 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2e873d10
JW		 2308 if (!iob)
2309 return -ENOMEM;
2310
2311 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2312 qeth_idx_setup_activate_cmd(card, iob);
f3b783b1 2313 iob->callback = qeth_idx_activate_write_channel_cb;
2e873d10 2314
c3b2218d 2315 rc = qeth_send_control_data(card, iob, NULL, NULL);
2e873d10
JW		 2316 if (rc)
2317 return rc;
2318
2e873d10
JW		 2319 channel->state = CH_STATE_UP;
2320 return 0;
2321}
2322
4a71df50
FB		 2323static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2324 unsigned long data)
2325{
2326 struct qeth_cmd_buffer *iob;
2327
57a688aa 2328 QETH_CARD_TEXT(card, 2, "cmenblcb");
4a71df50
FB		 2329
2330 iob = (struct qeth_cmd_buffer *) data;
2331 memcpy(&card->token.cm_filter_r,
2332 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2333 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2334 return 0;
2335}
2336
2337static int qeth_cm_enable(struct qeth_card *card)
2338{
4a71df50
FB		 2339 struct qeth_cmd_buffer *iob;
2340
57a688aa 2341 QETH_CARD_TEXT(card, 2, "cmenable");
4a71df50 2342
f19f8fd2 2343 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1273a800
JW		 2344 if (!iob)
2345 return -ENOMEM;
48ce6f89 2346
4a71df50
FB		 2347 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2348 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2349 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2350 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2351
c3b2218d 2352 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
4a71df50
FB		 2353}
2354
2355static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2356 unsigned long data)
2357{
4a71df50
FB		 2358 struct qeth_cmd_buffer *iob;
2359
57a688aa 2360 QETH_CARD_TEXT(card, 2, "cmsetpcb");
4a71df50
FB		 2361
2362 iob = (struct qeth_cmd_buffer *) data;
2363 memcpy(&card->token.cm_connection_r,
2364 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2365 QETH_MPC_TOKEN_LENGTH);
4a71df50
FB		 2366 return 0;
2367}
2368
2369static int qeth_cm_setup(struct qeth_card *card)
2370{
4a71df50
FB		 2371 struct qeth_cmd_buffer *iob;
2372
57a688aa 2373 QETH_CARD_TEXT(card, 2, "cmsetup");
4a71df50 2374
f19f8fd2 2375 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
1273a800
JW		 2376 if (!iob)
2377 return -ENOMEM;
48ce6f89 2378
4a71df50
FB		 2379 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2380 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2381 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2382 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2383 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2384 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2385 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
4a71df50
FB		 2386}
2387
101e314d
JW		 2388static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2389{
2390 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2391 link_type == QETH_LINK_TYPE_HSTR) {
2392 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2393 return false;
2394 }
2395
2396 return true;
2397}
2398
8ce7a9e0 2399static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
4a71df50 2400{
8ce7a9e0
JW		 2401 struct net_device *dev = card->dev;
2402 unsigned int new_mtu;
2403
2404 if (!max_mtu) {
2405 /* IQD needs accurate max MTU to set up its RX buffers: */
2406 if (IS_IQD(card))
2407 return -EINVAL;
2408 /* tolerate quirky HW: */
2409 max_mtu = ETH_MAX_MTU;
2410 }
2411
2412 rtnl_lock();
2413 if (IS_IQD(card)) {
2414 /* move any device with default MTU to new max MTU: */
2415 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2416
2417 /* adjust RX buffer size to new max MTU: */
2418 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2419 if (dev->max_mtu && dev->max_mtu != max_mtu)
41c47da3 2420 qeth_free_qdio_queues(card);
8ce7a9e0
JW		 2421 } else {
2422 if (dev->mtu)
2423 new_mtu = dev->mtu;
2424 /* default MTUs for first setup: */
4fda3354 2425 else if (IS_LAYER2(card))
8ce7a9e0
JW		 2426 new_mtu = ETH_DATA_LEN;
2427 else
2428 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
4a71df50 2429 }
8ce7a9e0
JW		 2430
2431 dev->max_mtu = max_mtu;
2432 dev->mtu = min(new_mtu, max_mtu);
2433 rtnl_unlock();
2434 return 0;
4a71df50
FB		 2435}
2436
cef6ff22 2437static int qeth_get_mtu_outof_framesize(int framesize)
4a71df50
FB		 2438{
2439 switch (framesize) {
2440 case 0x4000:
2441 return 8192;
2442 case 0x6000:
2443 return 16384;
2444 case 0xa000:
2445 return 32768;
2446 case 0xffff:
2447 return 57344;
2448 default:
2449 return 0;
2450 }
2451}
2452
4a71df50
FB		 2453static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2454 unsigned long data)
2455{
4a71df50
FB		 2456 __u16 mtu, framesize;
2457 __u16 len;
4a71df50 2458 struct qeth_cmd_buffer *iob;
101e314d 2459 u8 link_type = 0;
4a71df50 2460
57a688aa 2461 QETH_CARD_TEXT(card, 2, "ulpenacb");
4a71df50
FB		 2462
2463 iob = (struct qeth_cmd_buffer *) data;
2464 memcpy(&card->token.ulp_filter_r,
2465 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2466 QETH_MPC_TOKEN_LENGTH);
379ac99e 2467 if (IS_IQD(card)) {
4a71df50
FB		 2468 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2469 mtu = qeth_get_mtu_outof_framesize(framesize);
4a71df50 2470 } else {
8ce7a9e0 2471 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
4a71df50 2472 }
8ce7a9e0 2473 *(u16 *)reply->param = mtu;
4a71df50
FB		 2474
2475 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2476 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2477 memcpy(&link_type,
2478 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
101e314d
JW		 2479 if (!qeth_is_supported_link_type(card, link_type))
2480 return -EPROTONOSUPPORT;
2481 }
2482
2483 card->info.link_type = link_type;
57a688aa 2484 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
4a71df50
FB		 2485 return 0;
2486}
2487
73657a3e
JW		 2488static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2489{
a37cfa28 2490 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
73657a3e
JW		 2491}
2492
4a71df50
FB		 2493static int qeth_ulp_enable(struct qeth_card *card)
2494{
73657a3e 2495 u8 prot_type = qeth_mpc_select_prot_type(card);
4a71df50 2496 struct qeth_cmd_buffer *iob;
8ce7a9e0 2497 u16 max_mtu;
73657a3e 2498 int rc;
4a71df50 2499
57a688aa 2500 QETH_CARD_TEXT(card, 2, "ulpenabl");
4a71df50 2501
f19f8fd2 2502 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
1273a800
JW		 2503 if (!iob)
2504 return -ENOMEM;
4a71df50 2505
92d27209 2506 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
4a71df50
FB		 2507 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2508 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2509 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2510 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2511 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2512 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
8ce7a9e0
JW		 2513 if (rc)
2514 return rc;
2515 return qeth_update_max_mtu(card, max_mtu);
4a71df50
FB		 2516}
2517
2518static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2519 unsigned long data)
2520{
2521 struct qeth_cmd_buffer *iob;
2522
57a688aa 2523 QETH_CARD_TEXT(card, 2, "ulpstpcb");
4a71df50
FB		 2524
2525 iob = (struct qeth_cmd_buffer *) data;
2526 memcpy(&card->token.ulp_connection_r,
2527 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2528 QETH_MPC_TOKEN_LENGTH);
65a1f898
UB		 2529 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2530 3)) {
57a688aa 2531 QETH_CARD_TEXT(card, 2, "olmlimit");
65a1f898
UB		 2532 dev_err(&card->gdev->dev, "A connection could not be "
2533 "established because of an OLM limit\n");
4b7ae122 2534 return -EMLINK;
65a1f898 2535 }
7bf9bcff 2536 return 0;
4a71df50
FB		 2537}
2538
2539static int qeth_ulp_setup(struct qeth_card *card)
2540{
4a71df50
FB		 2541 __u16 temp;
2542 struct qeth_cmd_buffer *iob;
4a71df50 2543
57a688aa 2544 QETH_CARD_TEXT(card, 2, "ulpsetup");
4a71df50 2545
f19f8fd2 2546 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
1273a800
JW		 2547 if (!iob)
2548 return -ENOMEM;
4a71df50
FB		 2549
2550 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2551 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2552 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2553 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2554 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2555 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2556
fa115adf 2557 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
4a71df50
FB		 2558 temp = (card->info.cula << 8) + card->info.unit_addr2;
2559 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
c3b2218d 2560 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
4a71df50
FB		 2561}
2562
e47ded97
JW		 2563static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2564 gfp_t gfp)
0da9581d 2565{
0da9581d
EL		 2566 struct qeth_qdio_out_buffer *newbuf;
2567
e47ded97 2568 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
3b346c18
JW		 2569 if (!newbuf)
2570 return -ENOMEM;
2571
d445a4e2 2572 newbuf->buffer = q->qdio_bufs[bidx];
0da9581d
EL		 2573 skb_queue_head_init(&newbuf->skb_list);
2574 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
0da9581d
EL		 2575 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2576 q->bufs[bidx] = newbuf;
3b346c18 2577 return 0;
0da9581d
EL		 2578}
2579
afa0c590 2580static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
d445a4e2
SO		 2581{
2582 if (!q)
2583 return;
2584
41c47da3 2585 qeth_drain_output_queue(q, true);
d445a4e2
SO		 2586 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2587 kfree(q);
2588}
2589
41c47da3 2590static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
d445a4e2
SO		 2591{
2592 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
e7a36d27 2593 unsigned int i;
d445a4e2
SO		 2594
2595 if (!q)
2596 return NULL;
2597
e7a36d27
JW		 2598 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2599 goto err_qdio_bufs;
2600
2601 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
e47ded97 2602 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
e7a36d27 2603 goto err_out_bufs;
d445a4e2 2604 }
e7a36d27 2605
d445a4e2 2606 return q;
e7a36d27
JW		 2607
2608err_out_bufs:
2609 while (i > 0)
396c1004 2610 qeth_free_out_buf(q->bufs[--i]);
e7a36d27
JW		 2611 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2612err_qdio_bufs:
2613 kfree(q);
2614 return NULL;
d445a4e2 2615}
0da9581d 2616
e53edf74
JW		 2617static void qeth_tx_completion_timer(struct timer_list *timer)
2618{
2619 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2620
2621 napi_schedule(&queue->napi);
2622 QETH_TXQ_STAT_INC(queue, completion_timer);
2623}
2624
41c47da3 2625static int qeth_alloc_qdio_queues(struct qeth_card *card)
4a71df50 2626{
e7a36d27 2627 unsigned int i;
4a71df50 2628
57a688aa 2629 QETH_CARD_TEXT(card, 2, "allcqdbf");
4a71df50
FB		 2630
2631 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2632 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2633 return 0;
2634
4a71df50
FB		 2635 /* inbound buffer pool */
2636 if (qeth_alloc_buffer_pool(card))
832585d2 2637 goto out_buffer_pool;
0da9581d 2638
4a71df50 2639 /* outbound */
4a71df50 2640 for (i = 0; i < card->qdio.no_out_queues; ++i) {
e53edf74
JW		 2641 struct qeth_qdio_out_q *queue;
2642
2643 queue = qeth_alloc_output_queue();
2644 if (!queue)
4a71df50 2645 goto out_freeoutq;
57a688aa 2646 QETH_CARD_TEXT_(card, 2, "outq %i", i);
e53edf74
JW		 2647 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2648 card->qdio.out_qs[i] = queue;
2649 queue->card = card;
2650 queue->queue_no = i;
c20383ad 2651 INIT_LIST_HEAD(&queue->pending_bufs);
a1668474 2652 spin_lock_init(&queue->lock);
e53edf74 2653 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
7a4b92e8
JW		 2654 if (IS_IQD(card)) {
2655 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2656 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2657 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2658 } else {
2659 queue->coalesce_usecs = USEC_PER_SEC;
2660 queue->max_coalesced_frames = 0;
2661 queue->rescan_usecs = 10 * USEC_PER_SEC;
2662 }
949bbf4d 2663 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
4a71df50 2664 }
0da9581d
EL		 2665
2666 /* completion */
2667 if (qeth_alloc_cq(card))
2668 goto out_freeoutq;
2669
4a71df50
FB		 2670 return 0;
2671
2672out_freeoutq:
bb92d3f8 2673 while (i > 0) {
afa0c590 2674 qeth_free_output_queue(card->qdio.out_qs[--i]);
bb92d3f8
JW		 2675 card->qdio.out_qs[i] = NULL;
2676 }
4a71df50 2677 qeth_free_buffer_pool(card);
832585d2 2678out_buffer_pool:
4a71df50
FB		 2679 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2680 return -ENOMEM;
2681}
2682
41c47da3 2683static void qeth_free_qdio_queues(struct qeth_card *card)
d445a4e2
SO		 2684{
2685 int i, j;
2686
2687 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2688 QETH_QDIO_UNINITIALIZED)
2689 return;
2690
2691 qeth_free_cq(card);
d445a4e2 2692 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
832585d2 2693 if (card->qdio.in_q->bufs[j].rx_skb) {
fdd3c5f0 2694 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
832585d2
JW		 2695 card->qdio.in_q->bufs[j].rx_skb = NULL;
2696 }
d445a4e2 2697 }
832585d2 2698
d445a4e2
SO		 2699 /* inbound buffer pool */
2700 qeth_free_buffer_pool(card);
2701 /* free outbound qdio_qs */
bb92d3f8
JW		 2702 for (i = 0; i < card->qdio.no_out_queues; i++) {
2703 qeth_free_output_queue(card->qdio.out_qs[i]);
2704 card->qdio.out_qs[i] = NULL;
d445a4e2
SO		 2705 }
2706}
2707
72d5e850
JW		 2708static void qeth_fill_qib_parms(struct qeth_card *card,
2709 struct qeth_qib_parms *parms)
2710{
949bbf4d
JW		 2711 struct qeth_qdio_out_q *queue;
2712 unsigned int i;
2713
72d5e850
JW		 2714 parms->pcit_magic[0] = 'P';
2715 parms->pcit_magic[1] = 'C';
2716 parms->pcit_magic[2] = 'I';
2717 parms->pcit_magic[3] = 'T';
2718 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2719 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2720 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2721 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2722
2723 parms->blkt_magic[0] = 'B';
2724 parms->blkt_magic[1] = 'L';
2725 parms->blkt_magic[2] = 'K';
2726 parms->blkt_magic[3] = 'T';
2727 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2728 parms->blkt_total = card->info.blkt.time_total;
2729 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2730 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
949bbf4d
JW		 2731
2732 /* Prio-queueing implicitly uses the default priorities: */
2733 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2734 return;
2735
2736 parms->pque_magic[0] = 'P';
2737 parms->pque_magic[1] = 'Q';
2738 parms->pque_magic[2] = 'U';
2739 parms->pque_magic[3] = 'E';
2740 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2741 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2742 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2743
2744 qeth_for_each_output_queue(card, queue, i)
2745 parms->pque_priority[i] = queue->priority;
4a71df50
FB		 2746}
2747
2748static int qeth_qdio_activate(struct qeth_card *card)
2749{
57a688aa 2750 QETH_CARD_TEXT(card, 3, "qdioact");
779e6e1c 2751 return qdio_activate(CARD_DDEV(card));
4a71df50
FB		 2752}
2753
2754static int qeth_dm_act(struct qeth_card *card)
2755{
4a71df50
FB		 2756 struct qeth_cmd_buffer *iob;
2757
57a688aa 2758 QETH_CARD_TEXT(card, 2, "dmact");
4a71df50 2759
f19f8fd2 2760 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
1273a800
JW		 2761 if (!iob)
2762 return -ENOMEM;
4a71df50
FB		 2763
2764 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2765 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2766 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2767 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c3b2218d 2768 return qeth_send_control_data(card, iob, NULL, NULL);
4a71df50
FB		 2769}
2770
2771static int qeth_mpc_initialize(struct qeth_card *card)
2772{
2773 int rc;
2774
57a688aa 2775 QETH_CARD_TEXT(card, 2, "mpcinit");
4a71df50
FB		 2776
2777 rc = qeth_issue_next_read(card);
2778 if (rc) {
57a688aa 2779 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 2780 return rc;
2781 }
2782 rc = qeth_cm_enable(card);
2783 if (rc) {
57a688aa 2784 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
8b5026bc 2785 return rc;
4a71df50
FB		 2786 }
2787 rc = qeth_cm_setup(card);
2788 if (rc) {
57a688aa 2789 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
8b5026bc 2790 return rc;
4a71df50
FB		 2791 }
2792 rc = qeth_ulp_enable(card);
2793 if (rc) {
57a688aa 2794 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
8b5026bc 2795 return rc;
4a71df50
FB		 2796 }
2797 rc = qeth_ulp_setup(card);
2798 if (rc) {
57a688aa 2799 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2800 return rc;
4a71df50 2801 }
41c47da3 2802 rc = qeth_alloc_qdio_queues(card);
4a71df50 2803 if (rc) {
57a688aa 2804 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
8b5026bc 2805 return rc;
4a71df50
FB		 2806 }
2807 rc = qeth_qdio_establish(card);
2808 if (rc) {
57a688aa 2809 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
41c47da3 2810 qeth_free_qdio_queues(card);
8b5026bc 2811 return rc;
4a71df50
FB		 2812 }
2813 rc = qeth_qdio_activate(card);
2814 if (rc) {
57a688aa 2815 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
8b5026bc 2816 return rc;
4a71df50
FB		 2817 }
2818 rc = qeth_dm_act(card);
2819 if (rc) {
57a688aa 2820 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
8b5026bc 2821 return rc;
4a71df50
FB		 2822 }
2823
2824 return 0;
4a71df50
FB		 2825}
2826
b7ea041b 2827static void qeth_print_status_message(struct qeth_card *card)
4a71df50
FB		 2828{
2829 switch (card->info.type) {
5113fec0
UB		 2830 case QETH_CARD_TYPE_OSD:
2831 case QETH_CARD_TYPE_OSM:
2832 case QETH_CARD_TYPE_OSX:
4a71df50
FB		 2833 /* VM will use a non-zero first character
2834 * to indicate a HiperSockets like reporting
2835 * of the level OSA sets the first character to zero
2836 * */
2837 if (!card->info.mcl_level[0]) {
74c05a38
TW		 2838 scnprintf(card->info.mcl_level,
2839 sizeof(card->info.mcl_level),
2840 "%02x%02x",
2841 card->info.mcl_level[2],
2842 card->info.mcl_level[3]);
4a71df50
FB		 2843 break;
2844 }
df561f66 2845 fallthrough;
4a71df50 2846 case QETH_CARD_TYPE_IQD:
379ac99e 2847 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
4a71df50
FB		 2848 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2849 card->info.mcl_level[0]];
2850 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2851 card->info.mcl_level[1]];
2852 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2853 card->info.mcl_level[2]];
2854 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2855 card->info.mcl_level[3]];
2856 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2857 }
2858 break;
2859 default:
2860 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2861 }
239ff408
UB		 2862 dev_info(&card->gdev->dev,
2863 "Device is a%s card%s%s%s\nwith link type %s.\n",
2864 qeth_get_cardname(card),
2865 (card->info.mcl_level[0]) ? " (level: " : "",
2866 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2867 (card->info.mcl_level[0]) ? ")" : "",
2868 qeth_get_cardname_short(card));
4a71df50 2869}
4a71df50 2870
4a71df50
FB		 2871static void qeth_initialize_working_pool_list(struct qeth_card *card)
2872{
2873 struct qeth_buffer_pool_entry *entry;
2874
847a50fd 2875 QETH_CARD_TEXT(card, 5, "inwrklst");
4a71df50
FB		 2876
2877 list_for_each_entry(entry,
2878 &card->qdio.init_pool.entry_list, init_list) {
2879 qeth_put_buffer_pool_entry(card, entry);
2880 }
2881}
2882
cef6ff22
JW		 2883static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2884 struct qeth_card *card)
4a71df50 2885{
4a71df50
FB		 2886 struct qeth_buffer_pool_entry *entry;
2887 int i, free;
4a71df50
FB		 2888
2889 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2890 return NULL;
2891
bb59c8a8 2892 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
4a71df50
FB		 2893 free = 1;
2894 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2895 if (page_count(entry->elements[i]) > 1) {
4a71df50
FB		 2896 free = 0;
2897 break;
2898 }
2899 }
2900 if (free) {
2901 list_del_init(&entry->list);
2902 return entry;
2903 }
2904 }
2905
2906 /* no free buffer in pool so take first one and swap pages */
bb59c8a8
JW		 2907 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2908 struct qeth_buffer_pool_entry, list);
4a71df50 2909 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
f81649df 2910 if (page_count(entry->elements[i]) > 1) {
714c9108 2911 struct page *page = dev_alloc_page();
f81649df
JW		 2912
2913 if (!page)
4a71df50 2914 return NULL;
f81649df
JW		 2915
2916 __free_page(entry->elements[i]);
2917 entry->elements[i] = page;
2918 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
4a71df50
FB		 2919 }
2920 }
2921 list_del_init(&entry->list);
2922 return entry;
2923}
2924
2925static int qeth_init_input_buffer(struct qeth_card *card,
2926 struct qeth_qdio_buffer *buf)
2927{
eff73e16 2928 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
4a71df50
FB		 2929 int i;
2930
b3332930 2931 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
37cf05d2 2932 buf->rx_skb = netdev_alloc_skb(card->dev,
8ca8559f
JW		 2933 ETH_HLEN +
2934 sizeof(struct ipv6hdr));
b3332930 2935 if (!buf->rx_skb)
17413852 2936 return -ENOMEM;
b3332930
FB		 2937 }
2938
eff73e16
JW		 2939 if (!pool_entry) {
2940 pool_entry = qeth_find_free_buffer_pool_entry(card);
2941 if (!pool_entry)
2942 return -ENOBUFS;
2943
2944 buf->pool_entry = pool_entry;
2945 }
4a71df50
FB		 2946
2947 /*
2948 * since the buffer is accessed only from the input_tasklet
2949 * there shouldn't be a need to synchronize; also, since we use
2950 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2951 * buffers
2952 */
4a71df50
FB		 2953 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2954 buf->buffer->element[i].length = PAGE_SIZE;
525b7d2e
HC		 2955 buf->buffer->element[i].addr = u64_to_dma64(
2956 page_to_phys(pool_entry->elements[i]));
4a71df50 2957 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
3ec90878 2958 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
4a71df50 2959 else
3ec90878
JG		 2960 buf->buffer->element[i].eflags = 0;
2961 buf->buffer->element[i].sflags = 0;
4a71df50
FB		 2962 }
2963 return 0;
2964}
2965
8b664cd1
JW		 2966static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2967 struct qeth_qdio_out_q *queue)
2968{
2969 if (!IS_IQD(card) ||
2970 qeth_iqd_is_mcast_queue(card, queue) ||
2971 card->options.cq == QETH_CQ_ENABLED ||
2972 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2973 return 1;
2974
2975 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2976}
2977
aa3ad392 2978static int qeth_init_qdio_queues(struct qeth_card *card)
4a71df50 2979{
9e7d92e0 2980 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
7b579ce5 2981 unsigned int i;
4a71df50
FB		 2982 int rc;
2983
57a688aa 2984 QETH_CARD_TEXT(card, 2, "initqdqs");
4a71df50
FB		 2985
2986 /* inbound queue */
1b45c80b
JW		 2987 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2988 memset(&card->rx, 0, sizeof(struct qeth_rx));
17413852 2989
4a71df50
FB		 2990 qeth_initialize_working_pool_list(card);
2991 /*give only as many buffers to hardware as we have buffer pool entries*/
9e7d92e0 2992 for (i = 0; i < rx_bufs; i++) {
17413852
JW		 2993 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2994 if (rc)
2995 return rc;
2996 }
2997
9e7d92e0 2998 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
a60bffe5 2999 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
4a71df50 3000 if (rc) {
57a688aa 3001 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4a71df50
FB		 3002 return rc;
3003 }
0da9581d
EL		 3004
3005 /* completion */
3006 rc = qeth_cq_init(card);
3007 if (rc) {
3008 return rc;
3009 }
3010
4a71df50
FB		 3011 /* outbound queue */
3012 for (i = 0; i < card->qdio.no_out_queues; ++i) {
4e26c5fe
JW		 3013 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
3014
3015 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
3016 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3017 queue->next_buf_to_fill = 0;
3018 queue->do_pack = 0;
9549d70a 3019 queue->prev_hdr = NULL;
ee1e52d1 3020 queue->coalesced_frames = 0;
9549d70a 3021 queue->bulk_start = 0;
8b664cd1
JW		 3022 queue->bulk_count = 0;
3023 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
4e26c5fe
JW		 3024 atomic_set(&queue->used_buffers, 0);
3025 atomic_set(&queue->set_pci_flags_count, 0);
96bd6c94 3026 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
4a71df50
FB		 3027 }
3028 return 0;
3029}
4a71df50 3030
48ce6f89 3031static void qeth_ipa_finalize_cmd(struct qeth_card *card,
c3b2218d 3032 struct qeth_cmd_buffer *iob)
48ce6f89 3033{
c3b2218d 3034 qeth_mpc_finalize_cmd(card, iob);
48ce6f89
JW		 3035
3036 /* override with IPA-specific values: */
308946b0 3037 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
48ce6f89
JW		 3038}
3039
a8c7629c
JW		 3040static void qeth_prepare_ipa_cmd(struct qeth_card *card,
3041 struct qeth_cmd_buffer *iob, u16 cmd_length)
605c9d5f
JW		 3042{
3043 u8 prot_type = qeth_mpc_select_prot_type(card);
c3b2218d 3044 u16 total_length = iob->length;
605c9d5f 3045
f19f8fd2
JW		 3046 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3047 iob->data);
48ce6f89 3048 iob->finalize = qeth_ipa_finalize_cmd;
782e4a79 3049
605c9d5f 3050 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
c2153277 3051 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
605c9d5f 3052 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
c2153277
JW		 3053 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3054 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
605c9d5f
JW		 3055 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3056 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
c2153277 3057 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
605c9d5f 3058}
605c9d5f 3059
7f92316c
JW		 3060static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3061 struct qeth_cmd_buffer *reply)
3062{
3063 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3064
3065 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3066}
3067
a59d121d
JW		 3068struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3069 enum qeth_ipa_cmds cmd_code,
3070 enum qeth_prot_versions prot,
3071 unsigned int data_length)
3072{
3073 struct qeth_cmd_buffer *iob;
c3b2218d 3074 struct qeth_ipacmd_hdr *hdr;
a59d121d
JW		 3075
3076 data_length += offsetof(struct qeth_ipa_cmd, data);
3077 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3078 QETH_IPA_TIMEOUT);
3079 if (!iob)
3080 return NULL;
3081
a8c7629c
JW		 3082 qeth_prepare_ipa_cmd(card, iob, data_length);
3083 iob->match = qeth_ipa_match_reply;
c3b2218d
JW		 3084
3085 hdr = &__ipa_cmd(iob)->hdr;
3086 hdr->command = cmd_code;
3087 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3088 /* hdr->seqno is set by qeth_send_control_data() */
101e314d 3089 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
c3b2218d
JW		 3090 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3091 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3092 hdr->param_count = 1;
3093 hdr->prot_version = prot;
a59d121d
JW		 3094 return iob;
3095}
3096EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3097
742d4d40
JW		 3098static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3099 struct qeth_reply *reply, unsigned long data)
3100{
3101 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3102
3103 return (cmd->hdr.return_code) ? -EIO : 0;
3104}
3105
7ffaef82 3106/*
efbbc1d5
EC		 3107 * qeth_send_ipa_cmd() - send an IPA command
3108 *
3109 * See qeth_send_control_data() for explanation of the arguments.
3110 */
3111
4a71df50
FB		 3112int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3113 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3114 unsigned long),
3115 void *reply_param)
3116{
3117 int rc;
4a71df50 3118
847a50fd 3119 QETH_CARD_TEXT(card, 4, "sendipa");
742d4d40 3120
2e873d10 3121 if (card->read_or_write_problem) {
c3b2218d 3122 qeth_put_cmd(iob);
2e873d10
JW		 3123 return -EIO;
3124 }
3125
742d4d40
JW		 3126 if (reply_cb == NULL)
3127 reply_cb = qeth_send_ipa_cmd_cb;
c3b2218d 3128 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
908abbb5
UB		 3129 if (rc == -ETIME) {
3130 qeth_clear_ipacmd_list(card);
3131 qeth_schedule_recovery(card);
3132 }
4a71df50
FB		 3133 return rc;
3134}
3135EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3136
4b7ae122
JW		 3137static int qeth_send_startlan_cb(struct qeth_card *card,
3138 struct qeth_reply *reply, unsigned long data)
3139{
3140 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3141
3142 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3143 return -ENETDOWN;
3144
3145 return (cmd->hdr.return_code) ? -EIO : 0;
3146}
3147
10340510 3148static int qeth_send_startlan(struct qeth_card *card)
4a71df50 3149{
70919e23 3150 struct qeth_cmd_buffer *iob;
4a71df50 3151
57a688aa 3152 QETH_CARD_TEXT(card, 2, "strtlan");
4a71df50 3153
a59d121d 3154 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
1aec42bc
TR		 3155 if (!iob)
3156 return -ENOMEM;
4b7ae122 3157 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
4a71df50 3158}
4a71df50 3159
686c97ee 3160static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
4a71df50 3161{
686c97ee 3162 if (!cmd->hdr.return_code)
4a71df50
FB		 3163 cmd->hdr.return_code =
3164 cmd->data.setadapterparms.hdr.return_code;
686c97ee 3165 return cmd->hdr.return_code;
4a71df50 3166}
4a71df50
FB		 3167
3168static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3169 struct qeth_reply *reply, unsigned long data)
3170{
686c97ee 3171 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
101e314d 3172 struct qeth_query_cmds_supp *query_cmd;
4a71df50 3173
847a50fd 3174 QETH_CARD_TEXT(card, 3, "quyadpcb");
686c97ee 3175 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3176 return -EIO;
4a71df50 3177
101e314d
JW		 3178 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3179 if (query_cmd->lan_type & 0x7f) {
3180 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3181 return -EPROTONOSUPPORT;
3182
3183 card->info.link_type = query_cmd->lan_type;
57a688aa 3184 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
5113fec0 3185 }
101e314d
JW		 3186
3187 card->options.adp.supported = query_cmd->supported_cmds;
686c97ee 3188 return 0;
4a71df50
FB		 3189}
3190
eb3fb0ba 3191static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
b9150461
JW		 3192 enum qeth_ipa_setadp_cmd adp_cmd,
3193 unsigned int data_length)
4a71df50 3194{
b9150461 3195 struct qeth_ipacmd_setadpparms_hdr *hdr;
4a71df50 3196 struct qeth_cmd_buffer *iob;
4a71df50 3197
b9150461
JW		 3198 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3199 data_length +
3200 offsetof(struct qeth_ipacmd_setadpparms,
3201 data));
3202 if (!iob)
3203 return NULL;
4a71df50 3204
b9150461
JW		 3205 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3206 hdr->cmdlength = sizeof(*hdr) + data_length;
3207 hdr->command_code = adp_cmd;
3208 hdr->used_total = 1;
3209 hdr->seq_no = 1;
4a71df50
FB		 3210 return iob;
3211}
4a71df50 3212
09960b3a 3213static int qeth_query_setadapterparms(struct qeth_card *card)
4a71df50
FB		 3214{
3215 int rc;
3216 struct qeth_cmd_buffer *iob;
3217
847a50fd 3218 QETH_CARD_TEXT(card, 3, "queryadp");
4a71df50 3219 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
b9150461 3220 SETADP_DATA_SIZEOF(query_cmds_supp));
1aec42bc
TR		 3221 if (!iob)
3222 return -ENOMEM;
4a71df50
FB		 3223 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3224 return rc;
3225}
4a71df50 3226
1da74b1c
FB		 3227static int qeth_query_ipassists_cb(struct qeth_card *card,
3228 struct qeth_reply *reply, unsigned long data)
3229{
3230 struct qeth_ipa_cmd *cmd;
3231
57a688aa 3232 QETH_CARD_TEXT(card, 2, "qipasscb");
1da74b1c
FB		 3233
3234 cmd = (struct qeth_ipa_cmd *) data;
a134884a
SR		 3235
3236 switch (cmd->hdr.return_code) {
742d4d40
JW		 3237 case IPA_RC_SUCCESS:
3238 break;
a134884a
SR		 3239 case IPA_RC_NOTSUPP:
3240 case IPA_RC_L2_UNSUPPORTED_CMD:
57a688aa 3241 QETH_CARD_TEXT(card, 2, "ipaunsup");
52f82bf1
JW		 3242 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3243 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
742d4d40 3244 return -EOPNOTSUPP;
a134884a 3245 default:
742d4d40
JW		 3246 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3247 CARD_DEVID(card), cmd->hdr.return_code);
3248 return -EIO;
a134884a
SR		 3249 }
3250
52f82bf1
JW		 3251 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3252 card->options.ipa4 = cmd->hdr.assists;
3253 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3254 card->options.ipa6 = cmd->hdr.assists;
3255 else
e19e5be8
JW		 3256 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3257 CARD_DEVID(card));
1da74b1c
FB		 3258 return 0;
3259}
3260
09960b3a
JW		 3261static int qeth_query_ipassists(struct qeth_card *card,
3262 enum qeth_prot_versions prot)
1da74b1c
FB		 3263{
3264 int rc;
3265 struct qeth_cmd_buffer *iob;
3266
57a688aa 3267 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
a59d121d 3268 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
1aec42bc
TR		 3269 if (!iob)
3270 return -ENOMEM;
1da74b1c
FB		 3271 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3272 return rc;
3273}
1da74b1c 3274
45cbb2e4
SR		 3275static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3276 struct qeth_reply *reply, unsigned long data)
3277{
686c97ee 3278 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
45cbb2e4 3279 struct qeth_query_switch_attributes *attrs;
686c97ee 3280 struct qeth_switch_info *sw_info;
45cbb2e4
SR		 3281
3282 QETH_CARD_TEXT(card, 2, "qswiatcb");
686c97ee 3283 if (qeth_setadpparms_inspect_rc(cmd))
742d4d40 3284 return -EIO;
45cbb2e4 3285
686c97ee
JW		 3286 sw_info = (struct qeth_switch_info *)reply->param;
3287 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3288 sw_info->capabilities = attrs->capabilities;
3289 sw_info->settings = attrs->settings;
3290 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3291 sw_info->settings);
45cbb2e4
SR		 3292 return 0;
3293}
3294
3295int qeth_query_switch_attributes(struct qeth_card *card,
3296 struct qeth_switch_info *sw_info)
3297{
3298 struct qeth_cmd_buffer *iob;
3299
3300 QETH_CARD_TEXT(card, 2, "qswiattr");
3301 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3302 return -EOPNOTSUPP;
3303 if (!netif_carrier_ok(card->dev))
3304 return -ENOMEDIUM;
b9150461 3305 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
1aec42bc
TR		 3306 if (!iob)
3307 return -ENOMEM;
45cbb2e4
SR		 3308 return qeth_send_ipa_cmd(card, iob,
3309 qeth_query_switch_attributes_cb, sw_info);
3310}
45cbb2e4 3311
5cfbe10a
JW		 3312struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3313 enum qeth_diags_cmds sub_cmd,
3314 unsigned int data_length)
3315{
3316 struct qeth_ipacmd_diagass *cmd;
3317 struct qeth_cmd_buffer *iob;
3318
3319 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3320 DIAG_HDR_LEN + data_length);
3321 if (!iob)
3322 return NULL;
3323
3324 cmd = &__ipa_cmd(iob)->data.diagass;
3325 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3326 cmd->subcmd = sub_cmd;
3327 return iob;
3328}
3329EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3330
1da74b1c
FB		 3331static int qeth_query_setdiagass_cb(struct qeth_card *card,
3332 struct qeth_reply *reply, unsigned long data)
3333{
742d4d40
JW		 3334 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3335 u16 rc = cmd->hdr.return_code;
1da74b1c 3336
742d4d40 3337 if (rc) {
1da74b1c 3338 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
742d4d40
JW		 3339 return -EIO;
3340 }
3341
3342 card->info.diagass_support = cmd->data.diagass.ext;
1da74b1c
FB		 3343 return 0;
3344}
3345
3346static int qeth_query_setdiagass(struct qeth_card *card)
3347{
3348 struct qeth_cmd_buffer *iob;
1da74b1c 3349
57a688aa 3350 QETH_CARD_TEXT(card, 2, "qdiagass");
5cfbe10a 3351 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
1aec42bc
TR		 3352 if (!iob)
3353 return -ENOMEM;
1da74b1c
FB		 3354 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3355}
3356
3357static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3358{
3359 unsigned long info = get_zeroed_page(GFP_KERNEL);
3360 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3361 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3362 struct ccw_dev_id ccwid;
caf757c6 3363 int level;
1da74b1c
FB		 3364
3365 tid->chpid = card->info.chpid;
3366 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3367 tid->ssid = ccwid.ssid;
3368 tid->devno = ccwid.devno;
3369 if (!info)
3370 return;
caf757c6
HC		 3371 level = stsi(NULL, 0, 0, 0);
3372 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
1da74b1c 3373 tid->lparnr = info222->lpar_number;
caf757c6 3374 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
1da74b1c
FB		 3375 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3376 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3377 }
3378 free_page(info);
1da74b1c
FB		 3379}
3380
3381static int qeth_hw_trap_cb(struct qeth_card *card,
3382 struct qeth_reply *reply, unsigned long data)
3383{
742d4d40
JW		 3384 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3385 u16 rc = cmd->hdr.return_code;
1da74b1c 3386
742d4d40 3387 if (rc) {
1da74b1c 3388 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
742d4d40
JW		 3389 return -EIO;
3390 }
1da74b1c
FB		 3391 return 0;
3392}
3393
3394int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3395{
3396 struct qeth_cmd_buffer *iob;
3397 struct qeth_ipa_cmd *cmd;
3398
57a688aa 3399 QETH_CARD_TEXT(card, 2, "diagtrap");
5cfbe10a 3400 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
1aec42bc
TR		 3401 if (!iob)
3402 return -ENOMEM;
ff5caa7a 3403 cmd = __ipa_cmd(iob);
1da74b1c
FB		 3404 cmd->data.diagass.type = 1;
3405 cmd->data.diagass.action = action;
3406 switch (action) {
3407 case QETH_DIAGS_TRAP_ARM:
3408 cmd->data.diagass.options = 0x0003;
3409 cmd->data.diagass.ext = 0x00010000 +
3410 sizeof(struct qeth_trap_id);
3411 qeth_get_trap_id(card,
3412 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3413 break;
3414 case QETH_DIAGS_TRAP_DISARM:
3415 cmd->data.diagass.options = 0x0001;
3416 break;
3417 case QETH_DIAGS_TRAP_CAPTURE:
3418 break;
3419 }
3420 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3421}
1da74b1c 3422
d73ef324
JW		 3423static int qeth_check_qdio_errors(struct qeth_card *card,
3424 struct qdio_buffer *buf,
3425 unsigned int qdio_error,
3426 const char *dbftext)
4a71df50 3427{
779e6e1c 3428 if (qdio_error) {
847a50fd 3429 QETH_CARD_TEXT(card, 2, dbftext);
38593d01 3430 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3ec90878 3431 buf->element[15].sflags);
38593d01 3432 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3ec90878 3433 buf->element[14].sflags);
38593d01 3434 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3ec90878 3435 if ((buf->element[15].sflags) == 0x12) {
845ef904 3436 QETH_CARD_STAT_INC(card, rx_fifo_errors);
76b11f8e
UB		 3437 return 0;
3438 } else
3439 return 1;
4a71df50
FB		 3440 }
3441 return 0;
3442}
4a71df50 3443
7c94a882
JW		 3444static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3445 unsigned int count)
4a71df50
FB		 3446{
3447 struct qeth_qdio_q *queue = card->qdio.in_q;
b3332930 3448 struct list_head *lh;
4a71df50
FB		 3449 int i;
3450 int rc;
3451 int newcount = 0;
3452
4a71df50
FB		 3453 /* only requeue at a certain threshold to avoid SIGAs */
3454 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3455 for (i = queue->next_buf_to_init;
3456 i < queue->next_buf_to_init + count; ++i) {
3457 if (qeth_init_input_buffer(card,
ec2b559d 3458 &queue->bufs[QDIO_BUFNR(i)])) {
4a71df50
FB		 3459 break;
3460 } else {
3461 newcount++;
3462 }
3463 }
3464
3465 if (newcount < count) {
3466 /* we are in memory shortage so we switch back to
3467 traditional skb allocation and drop packages */
4a71df50
FB		 3468 atomic_set(&card->force_alloc_skb, 3);
3469 count = newcount;
3470 } else {
4a71df50
FB		 3471 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3472 }
3473
b3332930
FB		 3474 if (!count) {
3475 i = 0;
3476 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3477 i++;
3478 if (i == card->qdio.in_buf_pool.buf_count) {
3479 QETH_CARD_TEXT(card, 2, "qsarbw");
b3332930
FB		 3480 schedule_delayed_work(
3481 &card->buffer_reclaim_work,
3482 QETH_RECLAIM_WORK_TIME);
3483 }
7c94a882 3484 return 0;
b3332930
FB		 3485 }
3486
a60bffe5
JW		 3487 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
3488 queue->next_buf_to_init,
3489 count);
4a71df50 3490 if (rc) {
847a50fd 3491 QETH_CARD_TEXT(card, 2, "qinberr");
4a71df50 3492 }
ec2b559d
JW		 3493 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3494 count);
7c94a882 3495 return count;
4a71df50 3496 }
7c94a882
JW		 3497
3498 return 0;
4a71df50 3499}
d73ef324
JW		 3500
3501static void qeth_buffer_reclaim_work(struct work_struct *work)
3502{
beaadcc6
JW		 3503 struct qeth_card *card = container_of(to_delayed_work(work),
3504 struct qeth_card,
3505 buffer_reclaim_work);
d73ef324 3506
7c94a882
JW		 3507 local_bh_disable();
3508 napi_schedule(&card->napi);
3509 /* kick-start the NAPI softirq: */
3510 local_bh_enable();
d73ef324 3511}
4a71df50 3512
d7a39937 3513static void qeth_handle_send_error(struct qeth_card *card,
779e6e1c 3514 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
4a71df50 3515{
3ec90878 3516 int sbalf15 = buffer->buffer->element[15].sflags;
4a71df50 3517
847a50fd 3518 QETH_CARD_TEXT(card, 6, "hdsnderr");
76b11f8e 3519 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
d303b6fd
JG		 3520
3521 if (!qdio_err)
d7a39937 3522 return;
d303b6fd
JG		 3523
3524 if ((sbalf15 >= 15) && (sbalf15 <= 31))
d7a39937 3525 return;
d303b6fd 3526
847a50fd
CO		 3527 QETH_CARD_TEXT(card, 1, "lnkfail");
3528 QETH_CARD_TEXT_(card, 1, "%04x %02x",
d303b6fd 3529 (u16)qdio_err, (u8)sbalf15);
4a71df50
FB		 3530}
3531
664e42ac
JW		 3532/**
3533 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3534 * @queue: queue to check for packing buffer
3535 *
3536 * Returns number of buffers that were prepared for flush.
3537 */
3538static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3539{
3540 struct qeth_qdio_out_buffer *buffer;
3541
3542 buffer = queue->bufs[queue->next_buf_to_fill];
3543 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3544 (buffer->next_element_to_fill > 0)) {
3545 /* it's a packing buffer */
3546 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3547 queue->next_buf_to_fill =
ec2b559d 3548 QDIO_BUFNR(queue->next_buf_to_fill + 1);
664e42ac
JW		 3549 return 1;
3550 }
3551 return 0;
3552}
3553
4a71df50
FB		 3554/*
3555 * Switched to packing state if the number of used buffers on a queue
3556 * reaches a certain limit.
3557 */
3558static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3559{
3560 if (!queue->do_pack) {
3561 if (atomic_read(&queue->used_buffers)
3562 >= QETH_HIGH_WATERMARK_PACK){
3563 /* switch non-PACKING -> PACKING */
847a50fd 3564 QETH_CARD_TEXT(queue->card, 6, "np->pack");
b0abc4f5 3565 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50
FB		 3566 queue->do_pack = 1;
3567 }
3568 }
3569}
3570
3571/*
3572 * Switches from packing to non-packing mode. If there is a packing
3573 * buffer on the queue this buffer will be prepared to be flushed.
3574 * In that case 1 is returned to inform the caller. If no buffer
3575 * has to be flushed, zero is returned.
3576 */
3577static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3578{
4a71df50
FB		 3579 if (queue->do_pack) {
3580 if (atomic_read(&queue->used_buffers)
3581 <= QETH_LOW_WATERMARK_PACK) {
3582 /* switch PACKING -> non-PACKING */
847a50fd 3583 QETH_CARD_TEXT(queue->card, 6, "pack->np");
b0abc4f5 3584 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
4a71df50 3585 queue->do_pack = 0;
664e42ac 3586 return qeth_prep_flush_pack_buffer(queue);
4a71df50
FB		 3587 }
3588 }
4a71df50
FB		 3589 return 0;
3590}
3591
779e6e1c
JG		 3592static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3593 int count)
4a71df50 3594{
6ee091ef 3595 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
e53edf74 3596 struct qeth_card *card = queue->card;
7a4b92e8 3597 unsigned int frames, usecs;
396c1004 3598 struct qaob *aob = NULL;
4a71df50
FB		 3599 int rc;
3600 int i;
4a71df50 3601
4a71df50 3602 for (i = index; i < index + count; ++i) {
ec2b559d 3603 unsigned int bidx = QDIO_BUFNR(i);
8d145da2 3604 struct sk_buff *skb;
ec2b559d 3605
0da9581d 3606 buf = queue->bufs[bidx];
3ec90878
JG		 3607 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3608 SBAL_EFLAGS_LAST_ENTRY;
ee1e52d1 3609 queue->coalesced_frames += buf->frames;
4a71df50 3610
8d145da2
JW		 3611 if (IS_IQD(card)) {
3612 skb_queue_walk(&buf->skb_list, skb)
3613 skb_tx_timestamp(skb);
8d145da2 3614 }
6ee091ef 3615 }
4a71df50 3616
396c1004
JW		 3617 if (IS_IQD(card)) {
3618 if (card->options.cq == QETH_CQ_ENABLED &&
3619 !qeth_iqd_is_mcast_queue(card, queue) &&
3620 count == 1) {
3621 if (!buf->aob)
a18c28f0
JW		 3622 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3623 GFP_ATOMIC);
396c1004 3624 if (buf->aob) {
838e4cc8
JW		 3625 struct qeth_qaob_priv1 *priv;
3626
396c1004 3627 aob = buf->aob;
838e4cc8
JW		 3628 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3629 priv->state = QETH_QAOB_ISSUED;
3630 priv->queue_no = queue->queue_no;
396c1004
JW		 3631 }
3632 }
3633 } else {
4a71df50
FB		 3634 if (!queue->do_pack) {
3635 if ((atomic_read(&queue->used_buffers) >=
3636 (QETH_HIGH_WATERMARK_PACK -
3637 QETH_WATERMARK_PACK_FUZZ)) &&
3638 !atomic_read(&queue->set_pci_flags_count)) {
3639 /* it's likely that we'll go to packing
3640 * mode soon */
3641 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3642 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3643 }
3644 } else {
3645 if (!atomic_read(&queue->set_pci_flags_count)) {
3646 /*
3647 * there's no outstanding PCI any more, so we
1aaa62c4 3648 * have to request a PCI to be sure the PCI
4a71df50
FB		 3649 * will wake at some time in the future then we
3650 * can flush packed buffers that might still be
3651 * hanging around, which can happen if no
3652 * further send was requested by the stack
3653 */
3654 atomic_inc(&queue->set_pci_flags_count);
3ec90878 3655 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
4a71df50
FB		 3656 }
3657 }
3658 }
3659
1ab2f8c6 3660 QETH_TXQ_STAT_INC(queue, doorbell);
a60bffe5
JW		 3661 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
3662 index, count, aob);
e53edf74 3663
d6e51503
JW		 3664 switch (rc) {
3665 case 0:
3666 case -ENOBUFS:
3667 /* ignore temporary SIGA errors without busy condition */
3668
3669 /* Fake the TX completion interrupt: */
7a4b92e8
JW		 3670 frames = READ_ONCE(queue->max_coalesced_frames);
3671 usecs = READ_ONCE(queue->coalesce_usecs);
d6e51503 3672
7a4b92e8
JW		 3673 if (frames && queue->coalesced_frames >= frames) {
3674 napi_schedule(&queue->napi);
3675 queue->coalesced_frames = 0;
3676 QETH_TXQ_STAT_INC(queue, coal_frames);
3677 } else if (qeth_use_tx_irqs(card) &&
3678 atomic_read(&queue->used_buffers) >= 32) {
3679 /* Old behaviour carried over from the qdio layer: */
3680 napi_schedule(&queue->napi);
3681 QETH_TXQ_STAT_INC(queue, coal_frames);
3682 } else if (usecs) {
3683 qeth_tx_arm_timer(queue, usecs);
ee1e52d1 3684 }
e53edf74 3685
d6e51503
JW		 3686 break;
3687 default:
847a50fd 3688 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
0da9581d
EL		 3689 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3690 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3691 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
847a50fd 3692 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
d303b6fd 3693
4a71df50
FB		 3694 /* this must not happen under normal circumstances. if it
3695 * happens something is really wrong -> recover */
3696 qeth_schedule_recovery(queue->card);
4a71df50 3697 }
4a71df50
FB		 3698}
3699
9549d70a
JW		 3700static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3701{
8b664cd1 3702 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
9549d70a 3703
8b664cd1 3704 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
9549d70a 3705 queue->prev_hdr = NULL;
8b664cd1 3706 queue->bulk_count = 0;
9549d70a
JW		 3707}
3708
4a71df50
FB		 3709static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3710{
4a71df50 3711 /*
dbc9e341 3712 * check if we have to switch to non-packing mode or if
4a71df50
FB		 3713 * we have to get a pci flag out on the queue
3714 */
3715 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3716 !atomic_read(&queue->set_pci_flags_count)) {
a1668474 3717 unsigned int index, flush_cnt;
a1668474
JW		 3718
3719 spin_lock(&queue->lock);
3720
3721 index = queue->next_buf_to_fill;
a1668474
JW		 3722
3723 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3724 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3725 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3726
3727 if (flush_cnt) {
3728 qeth_flush_buffers(queue, index, flush_cnt);
6dc490e8 3729 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
4a71df50 3730 }
a1668474
JW		 3731
3732 spin_unlock(&queue->lock);
4a71df50
FB		 3733 }
3734}
3735
0a6e6345 3736static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
a1c3ed4c
FB		 3737{
3738 struct qeth_card *card = (struct qeth_card *)card_ptr;
3739
3d35dbe6 3740 napi_schedule_irqoff(&card->napi);
a1c3ed4c 3741}
a1c3ed4c 3742
0da9581d
EL		 3743int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3744{
3745 int rc;
3746
3747 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3748 rc = -1;
3749 goto out;
3750 } else {
3751 if (card->options.cq == cq) {
3752 rc = 0;
3753 goto out;
3754 }
3755
41c47da3 3756 qeth_free_qdio_queues(card);
0da9581d
EL		 3757 card->options.cq = cq;
3758 rc = 0;
3759 }
3760out:
3761 return rc;
3762
3763}
3764EXPORT_SYMBOL_GPL(qeth_configure_cq);
3765
838e4cc8
JW		 3766static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3767{
3768 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3769 unsigned int queue_no = priv->queue_no;
3770
3771 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3772
3773 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3774 queue_no < card->qdio.no_out_queues)
3775 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3776}
3777
3b346c18
JW		 3778static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3779 unsigned int queue, int first_element,
3780 int count)
3781{
0da9581d
EL		 3782 struct qeth_qdio_q *cq = card->qdio.c_q;
3783 int i;
3784 int rc;
3785
0da9581d
EL		 3786 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3787 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3788 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3789
3790 if (qdio_err) {
3a18d754 3791 netif_tx_stop_all_queues(card->dev);
0da9581d 3792 qeth_schedule_recovery(card);
4326b5b4 3793 return;
0da9581d
EL		 3794 }
3795
3796 for (i = first_element; i < first_element + count; ++i) {
ec2b559d 3797 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3b346c18 3798 int e = 0;
0da9581d 3799
903e4853
UB		 3800 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3801 buffer->element[e].addr) {
525b7d2e 3802 dma64_t phys_aob_addr = buffer->element[e].addr;
0da9581d 3803
525b7d2e 3804 qeth_qdio_handle_aob(card, dma64_to_virt(phys_aob_addr));
0da9581d
EL		 3805 ++e;
3806 }
3b346c18 3807 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
0da9581d 3808 }
a60bffe5
JW		 3809 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
3810 cq->next_buf_to_init, count);
0da9581d
EL		 3811 if (rc) {
3812 dev_warn(&card->gdev->dev,
3813 "QDIO reported an error, rc=%i\n", rc);
3814 QETH_CARD_TEXT(card, 2, "qcqherr");
3815 }
ec2b559d
JW		 3816
3817 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
0da9581d
EL		 3818}
3819
7bcd64eb
JW		 3820static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3821 unsigned int qdio_err, int queue,
3822 int first_elem, int count,
3823 unsigned long card_ptr)
a1c3ed4c
FB		 3824{
3825 struct qeth_card *card = (struct qeth_card *)card_ptr;
3826
0da9581d
EL		 3827 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3828 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3829
0a6e6345 3830 if (qdio_err)
a1c3ed4c
FB		 3831 qeth_schedule_recovery(card);
3832}
a1c3ed4c 3833
7bcd64eb
JW		 3834static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3835 unsigned int qdio_error, int __queue,
3836 int first_element, int count,
3837 unsigned long card_ptr)
4a71df50
FB		 3838{
3839 struct qeth_card *card = (struct qeth_card *) card_ptr;
4a71df50 3840
bdfd740c
JW		 3841 QETH_CARD_TEXT(card, 2, "achkcond");
3842 netif_tx_stop_all_queues(card->dev);
3843 qeth_schedule_recovery(card);
4a71df50 3844}
4a71df50 3845
7ffaef82 3846/*
290b8348
SR		 3847 * Note: Function assumes that we have 4 outbound queues.
3848 */
1b9e410f 3849static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
4a71df50 3850{
e6c15b5f 3851 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
290b8348
SR		 3852 u8 tos;
3853
290b8348
SR		 3854 switch (card->qdio.do_prio_queueing) {
3855 case QETH_PRIO_Q_ING_TOS:
3856 case QETH_PRIO_Q_ING_PREC:
17f3a8b5
JW		 3857 switch (vlan_get_protocol(skb)) {
3858 case htons(ETH_P_IP):
290b8348
SR		 3859 tos = ipv4_get_dsfield(ip_hdr(skb));
3860 break;
17f3a8b5 3861 case htons(ETH_P_IPV6):
290b8348
SR		 3862 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3863 break;
3864 default:
3865 return card->qdio.default_out_queue;
4a71df50 3866 }
290b8348 3867 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
e6c15b5f 3868 return ~tos >> 6 & 3;
290b8348 3869 if (tos & IPTOS_MINCOST)
e6c15b5f 3870 return 3;
290b8348
SR		 3871 if (tos & IPTOS_RELIABILITY)
3872 return 2;
3873 if (tos & IPTOS_THROUGHPUT)
3874 return 1;
3875 if (tos & IPTOS_LOWDELAY)
3876 return 0;
d66cb37e
SR		 3877 break;
3878 case QETH_PRIO_Q_ING_SKB:
3879 if (skb->priority > 5)
3880 return 0;
e6c15b5f 3881 return ~skb->priority >> 1 & 3;
d66cb37e 3882 case QETH_PRIO_Q_ING_VLAN:
e6c15b5f
JW		 3883 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3884 return ~ntohs(veth->h_vlan_TCI) >>
3885 (VLAN_PRIO_SHIFT + 1) & 3;
d66cb37e 3886 break;
c91a1fb7
JW		 3887 case QETH_PRIO_Q_ING_FIXED:
3888 return card->qdio.default_out_queue;
4a71df50 3889 default:
290b8348 3890 break;
4a71df50 3891 }
290b8348 3892 return card->qdio.default_out_queue;
4a71df50 3893}
4a71df50 3894
2863c613
EC		 3895/**
3896 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3897 * @skb: SKB address
3898 *
3899 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3900 * fragmented part of the SKB. Returns zero for linear SKB.
3901 */
356156b6 3902static int qeth_get_elements_for_frags(struct sk_buff *skb)
271648b4 3903{
2863c613 3904 int cnt, elements = 0;
271648b4
FB		 3905
3906 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
d7840976 3907 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
2863c613
EC		 3908
3909 elements += qeth_get_elements_for_range(
3910 (addr_t)skb_frag_address(frag),
3911 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
271648b4
FB		 3912 }
3913 return elements;
3914}
271648b4 3915
40e6a225
JW		 3916/**
3917 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3918 * to transmit an skb.
3919 * @skb: the skb to operate on.
3920 * @data_offset: skip this part of the skb's linear data
3921 *
3922 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3923 * skb's data (both its linear part and paged fragments).
3924 */
a8c7629c
JW		 3925static unsigned int qeth_count_elements(struct sk_buff *skb,
3926 unsigned int data_offset)
ba86ceee
JW		 3927{
3928 unsigned int elements = qeth_get_elements_for_frags(skb);
3929 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3930 addr_t start = (addr_t)skb->data + data_offset;
3931
3932 if (start != end)
3933 elements += qeth_get_elements_for_range(start, end);
3934 return elements;
3935}
4a71df50 3936
e517b649
JW		 3937#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3938 MAX_TCP_HEADER)
55494264 3939
0d6f02d3 3940/**
ba86ceee 3941 * qeth_add_hw_header() - add a HW header to an skb.
56c5af25 3942 * @queue: TX queue that the skb will be placed on.
ba86ceee 3943 * @skb: skb that the HW header should be added to.
0d6f02d3
JW		 3944 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3945 * it contains a valid pointer to a qeth_hdr.
a7c2f4a3
JW		 3946 * @hdr_len: length of the HW header.
3947 * @proto_len: length of protocol headers that need to be in same page as the
3948 * HW header.
56c5af25 3949 * @elements: returns the required number of buffer elements for this skb.
0d6f02d3
JW		 3950 *
3951 * Returns the pushed length. If the header can't be pushed on
3952 * (eg. because it would cross a page boundary), it is allocated from
3953 * the cache instead and 0 is returned.
ba86ceee 3954 * The number of needed buffer elements is returned in @elements.
0d6f02d3
JW		 3955 * Error to create the hdr is indicated by returning with < 0.
3956 */
b0abc4f5
JW		 3957static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3958 struct sk_buff *skb, struct qeth_hdr **hdr,
3959 unsigned int hdr_len, unsigned int proto_len,
3960 unsigned int *elements)
ba86ceee 3961{
b413ff8a 3962 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
a7c2f4a3 3963 const unsigned int contiguous = proto_len ? proto_len : 1;
4e26c5fe 3964 const unsigned int max_elements = queue->max_elements;
ba86ceee
JW		 3965 unsigned int __elements;
3966 addr_t start, end;
3967 bool push_ok;
3968 int rc;
3969
3970check_layout:
a7c2f4a3 3971 start = (addr_t)skb->data - hdr_len;
ba86ceee
JW		 3972 end = (addr_t)skb->data;
3973
a7c2f4a3 3974 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
ba86ceee
JW		 3975 /* Push HW header into same page as first protocol header. */
3976 push_ok = true;
e517b649
JW		 3977 /* ... but TSO always needs a separate element for headers: */
3978 if (skb_is_gso(skb))
3979 __elements = 1 + qeth_count_elements(skb, proto_len);
3980 else
3981 __elements = qeth_count_elements(skb, 0);
4e2fe4ed
JW		 3982 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3983 /* Push HW header into preceding page, flush with skb->data. */
a7c2f4a3 3984 push_ok = true;
ba86ceee 3985 __elements = 1 + qeth_count_elements(skb, 0);
a7c2f4a3
JW		 3986 } else {
3987 /* Use header cache, copy protocol headers up. */
3988 push_ok = false;
3989 __elements = 1 + qeth_count_elements(skb, proto_len);
ba86ceee
JW		 3990 }
3991
3992 /* Compress skb to fit into one IO buffer: */
3993 if (__elements > max_elements) {
3994 if (!skb_is_nonlinear(skb)) {
3995 /* Drop it, no easy way of shrinking it further. */
3996 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3997 max_elements, __elements, skb->len);
3998 return -E2BIG;
3999 }
4000
4001 rc = skb_linearize(skb);
b0abc4f5
JW		 4002 if (rc) {
4003 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
ba86ceee 4004 return rc;
b0abc4f5 4005 }
ba86ceee 4006
b0abc4f5 4007 QETH_TXQ_STAT_INC(queue, skbs_linearized);
ba86ceee
JW		 4008 /* Linearization changed the layout, re-evaluate: */
4009 goto check_layout;
4010 }
4011
4012 *elements = __elements;
4013 /* Add the header: */
4014 if (push_ok) {
a7c2f4a3
JW		 4015 *hdr = skb_push(skb, hdr_len);
4016 return hdr_len;
0d6f02d3 4017 }
b413ff8a
JW		 4018
4019 /* Fall back to cache element with known-good alignment: */
55494264
JW		 4020 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
4021 return -E2BIG;
b413ff8a 4022 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
0d6f02d3
JW		 4023 if (!*hdr)
4024 return -ENOMEM;
a7c2f4a3
JW		 4025 /* Copy protocol headers behind HW header: */
4026 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
0d6f02d3
JW		 4027 return 0;
4028}
0d6f02d3 4029
9549d70a 4030static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
9549d70a
JW		 4031 struct sk_buff *curr_skb,
4032 struct qeth_hdr *curr_hdr)
4033{
8b664cd1 4034 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
9549d70a
JW		 4035 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4036
4037 if (!prev_hdr)
4038 return true;
4039
4040 /* All packets must have the same target: */
4041 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4042 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4043
4044 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4045 eth_hdr(curr_skb)->h_dest) &&
4046 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4047 }
4048
4049 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4050 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4051}
4052
fff1aceb
JW		 4053/**
4054 * qeth_fill_buffer() - map skb into an output buffer
4055 * @buf: buffer to transport the skb
4056 * @skb: skb to map into the buffer
4057 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4058 * from qeth_core_header_cache.
4059 * @offset: when mapping the skb, start at skb->data + offset
4060 * @hd_len: if > 0, build a dedicated header element of this size
4061 */
4062static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4063 struct sk_buff *skb, struct qeth_hdr *hdr,
4064 unsigned int offset, unsigned int hd_len)
4a71df50 4065{
384d2ef1
JW		 4066 struct qdio_buffer *buffer = buf->buffer;
4067 int element = buf->next_element_to_fill;
cc309f83
JW		 4068 int length = skb_headlen(skb) - offset;
4069 char *data = skb->data + offset;
4e2fe4ed 4070 unsigned int elem_length, cnt;
fff1aceb
JW		 4071 bool is_first_elem = true;
4072
4073 __skb_queue_tail(&buf->skb_list, skb);
4074
4075 /* build dedicated element for HW Header */
4076 if (hd_len) {
4077 is_first_elem = false;
4078
525b7d2e 4079 buffer->element[element].addr = virt_to_dma64(hdr);
fff1aceb
JW		 4080 buffer->element[element].length = hd_len;
4081 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
a875fd16
JW		 4082
4083 /* HW header is allocated from cache: */
4084 if ((void *)hdr != skb->data)
bb7032dd 4085 __set_bit(element, buf->from_kmem_cache);
a875fd16
JW		 4086 /* HW header was pushed and is contiguous with linear part: */
4087 else if (length > 0 && !PAGE_ALIGNED(data) &&
4088 (data == (char *)hdr + hd_len))
4089 buffer->element[element].eflags |=
4090 SBAL_EFLAGS_CONTIGUOUS;
4091
fff1aceb
JW		 4092 element++;
4093 }
4a71df50 4094
cc309f83 4095 /* map linear part into buffer element(s) */
4a71df50 4096 while (length > 0) {
4e2fe4ed
JW		 4097 elem_length = min_t(unsigned int, length,
4098 PAGE_SIZE - offset_in_page(data));
4a71df50 4099
525b7d2e 4100 buffer->element[element].addr = virt_to_dma64(data);
4e2fe4ed
JW		 4101 buffer->element[element].length = elem_length;
4102 length -= elem_length;
384d2ef1
JW		 4103 if (is_first_elem) {
4104 is_first_elem = false;
5258830b
JW		 4105 if (length || skb_is_nonlinear(skb))
4106 /* skb needs additional elements */
3ec90878 4107 buffer->element[element].eflags =
5258830b 4108 SBAL_EFLAGS_FIRST_FRAG;
4a71df50 4109 else
5258830b
JW		 4110 buffer->element[element].eflags = 0;
4111 } else {
4112 buffer->element[element].eflags =
4113 SBAL_EFLAGS_MIDDLE_FRAG;
4a71df50 4114 }
4e2fe4ed
JW		 4115
4116 data += elem_length;
4a71df50 4117 element++;
4a71df50 4118 }
51aa165c 4119
cc309f83 4120 /* map page frags into buffer element(s) */
51aa165c 4121 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
f8eb4930
JW		 4122 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4123
4124 data = skb_frag_address(frag);
4125 length = skb_frag_size(frag);
271648b4 4126 while (length > 0) {
4e2fe4ed
JW		 4127 elem_length = min_t(unsigned int, length,
4128 PAGE_SIZE - offset_in_page(data));
271648b4 4129
525b7d2e 4130 buffer->element[element].addr = virt_to_dma64(data);
4e2fe4ed 4131 buffer->element[element].length = elem_length;
271648b4
FB		 4132 buffer->element[element].eflags =
4133 SBAL_EFLAGS_MIDDLE_FRAG;
4e2fe4ed
JW		 4134
4135 length -= elem_length;
4136 data += elem_length;
271648b4
FB		 4137 element++;
4138 }
51aa165c
FB		 4139 }
4140
3ec90878
JG		 4141 if (buffer->element[element - 1].eflags)
4142 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
384d2ef1 4143 buf->next_element_to_fill = element;
9549d70a 4144 return element;
4a71df50
FB		 4145}
4146
9549d70a
JW		 4147static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4148 struct sk_buff *skb, unsigned int elements,
4149 struct qeth_hdr *hdr, unsigned int offset,
4150 unsigned int hd_len)
4a71df50 4151{
96bd6c94 4152 unsigned int bytes = qdisc_pkt_len(skb);
8b664cd1 4153 struct qeth_qdio_out_buffer *buffer;
9549d70a 4154 unsigned int next_element;
54a50941
JW		 4155 struct netdev_queue *txq;
4156 bool stopped = false;
9549d70a
JW		 4157 bool flush;
4158
8b664cd1 4159 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
9549d70a 4160 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4a71df50 4161
54a50941
JW		 4162 /* Just a sanity check, the wake/stop logic should ensure that we always
4163 * get a free buffer.
4a71df50
FB		 4164 */
4165 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
7c2e9ba3 4166 return -EBUSY;
54a50941 4167
8b664cd1
JW		 4168 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4169
4170 if (flush ||
4171 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4172 if (buffer->next_element_to_fill > 0) {
4173 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4174 queue->bulk_count++;
4175 }
4176
4177 if (queue->bulk_count >= queue->bulk_max)
4178 flush = true;
4179
4180 if (flush)
4181 qeth_flush_queue(queue);
4182
4183 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4184 queue->bulk_count)];
54a50941 4185
9549d70a
JW		 4186 /* Sanity-check again: */
4187 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4188 return -EBUSY;
4189 }
4190
4191 if (buffer->next_element_to_fill == 0 &&
4192 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
54a50941
JW		 4193 /* If a TX completion happens right _here_ and misses to wake
4194 * the txq, then our re-check below will catch the race.
4195 */
4196 QETH_TXQ_STAT_INC(queue, stopped);
4197 netif_tx_stop_queue(txq);
4198 stopped = true;
4199 }
4200
9549d70a 4201 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
96bd6c94 4202 buffer->bytes += bytes;
1ab2f8c6 4203 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a 4204 queue->prev_hdr = hdr;
96bd6c94 4205
9549d70a
JW		 4206 flush = __netdev_tx_sent_queue(txq, bytes,
4207 !stopped && netdev_xmit_more());
4208
4209 if (flush || next_element >= queue->max_elements) {
4210 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
8b664cd1
JW		 4211 queue->bulk_count++;
4212
4213 if (queue->bulk_count >= queue->bulk_max)
4214 flush = true;
4215
4216 if (flush)
4217 qeth_flush_queue(queue);
9549d70a 4218 }
54a50941
JW		 4219
4220 if (stopped && !qeth_out_queue_is_full(queue))
4221 netif_tx_start_queue(txq);
4a71df50 4222 return 0;
4a71df50 4223}
4a71df50 4224
a8c7629c
JW		 4225static int qeth_do_send_packet(struct qeth_card *card,
4226 struct qeth_qdio_out_q *queue,
4227 struct sk_buff *skb, struct qeth_hdr *hdr,
4228 unsigned int offset, unsigned int hd_len,
4229 unsigned int elements_needed)
4a71df50 4230{
a1668474 4231 unsigned int start_index = queue->next_buf_to_fill;
4a71df50 4232 struct qeth_qdio_out_buffer *buffer;
9549d70a 4233 unsigned int next_element;
54a50941
JW		 4234 struct netdev_queue *txq;
4235 bool stopped = false;
4a71df50
FB		 4236 int flush_count = 0;
4237 int do_pack = 0;
4a71df50
FB		 4238 int rc = 0;
4239
0da9581d 4240 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4241
4242 /* Just a sanity check, the wake/stop logic should ensure that we always
4243 * get a free buffer.
4a71df50 4244 */
a1668474 4245 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4a71df50 4246 return -EBUSY;
54a50941
JW		 4247
4248 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4249
4a71df50
FB		 4250 /* check if we need to switch packing state of this queue */
4251 qeth_switch_to_packing_if_needed(queue);
4252 if (queue->do_pack) {
4253 do_pack = 1;
64ef8957 4254 /* does packet fit in current buffer? */
4e26c5fe
JW		 4255 if (buffer->next_element_to_fill + elements_needed >
4256 queue->max_elements) {
64ef8957
FB		 4257 /* ... no -> set state PRIMED */
4258 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4259 flush_count++;
4260 queue->next_buf_to_fill =
ec2b559d 4261 QDIO_BUFNR(queue->next_buf_to_fill + 1);
0da9581d 4262 buffer = queue->bufs[queue->next_buf_to_fill];
54a50941
JW		 4263
4264 /* We stepped forward, so sanity-check again: */
64ef8957
FB		 4265 if (atomic_read(&buffer->state) !=
4266 QETH_QDIO_BUF_EMPTY) {
4267 qeth_flush_buffers(queue, start_index,
779e6e1c 4268 flush_count);
3cdc8a25
JW		 4269 rc = -EBUSY;
4270 goto out;
4a71df50
FB		 4271 }
4272 }
4273 }
f72b4644 4274
54a50941
JW		 4275 if (buffer->next_element_to_fill == 0 &&
4276 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4277 /* If a TX completion happens right _here_ and misses to wake
4278 * the txq, then our re-check below will catch the race.
4279 */
4280 QETH_TXQ_STAT_INC(queue, stopped);
4281 netif_tx_stop_queue(txq);
4282 stopped = true;
4283 }
4284
9549d70a 4285 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
1ab2f8c6
JW		 4286 buffer->bytes += qdisc_pkt_len(skb);
4287 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
9549d70a
JW		 4288
4289 if (queue->do_pack)
4290 QETH_TXQ_STAT_INC(queue, skbs_pack);
4291 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4292 flush_count++;
4293 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
ec2b559d
JW		 4294 queue->next_buf_to_fill =
4295 QDIO_BUFNR(queue->next_buf_to_fill + 1);
9549d70a
JW		 4296 }
4297
4a71df50 4298 if (flush_count)
779e6e1c 4299 qeth_flush_buffers(queue, start_index, flush_count);
a1668474 4300
3cdc8a25 4301out:
b0abc4f5
JW		 4302 if (do_pack)
4303 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4a71df50 4304
54a50941
JW		 4305 if (stopped && !qeth_out_queue_is_full(queue))
4306 netif_tx_start_queue(txq);
4a71df50
FB		 4307 return rc;
4308}
4a71df50 4309
81ec5439
JW		 4310static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4311 unsigned int payload_len, struct sk_buff *skb,
4312 unsigned int proto_len)
82bf5c08
JW		 4313{
4314 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4315
4316 ext->hdr_tot_len = sizeof(*ext);
4317 ext->imb_hdr_no = 1;
4318 ext->hdr_type = 1;
4319 ext->hdr_version = 1;
4320 ext->hdr_len = 28;
4321 ext->payload_len = payload_len;
4322 ext->mss = skb_shinfo(skb)->gso_size;
4323 ext->dg_hdr_len = proto_len;
4324}
82bf5c08 4325
fc69660b 4326int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
17f3a8b5 4327 struct qeth_qdio_out_q *queue, __be16 proto,
b0abc4f5
JW		 4328 void (*fill_header)(struct qeth_qdio_out_q *queue,
4329 struct qeth_hdr *hdr, struct sk_buff *skb,
17f3a8b5 4330 __be16 proto, unsigned int data_len))
fc69660b 4331{
82bf5c08 4332 unsigned int proto_len, hw_hdr_len;
fc69660b 4333 unsigned int frame_len = skb->len;
82bf5c08 4334 bool is_tso = skb_is_gso(skb);
fc69660b
JW		 4335 unsigned int data_offset = 0;
4336 struct qeth_hdr *hdr = NULL;
4337 unsigned int hd_len = 0;
4338 unsigned int elements;
4339 int push_len, rc;
fc69660b 4340
82bf5c08
JW		 4341 if (is_tso) {
4342 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4343 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4344 } else {
4345 hw_hdr_len = sizeof(struct qeth_hdr);
81ec5439 4346 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
82bf5c08
JW		 4347 }
4348
fc69660b
JW		 4349 rc = skb_cow_head(skb, hw_hdr_len);
4350 if (rc)
4351 return rc;
4352
b0abc4f5 4353 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
fc69660b
JW		 4354 &elements);
4355 if (push_len < 0)
4356 return push_len;
82bf5c08 4357 if (is_tso || !push_len) {
fc69660b
JW		 4358 /* HW header needs its own buffer element. */
4359 hd_len = hw_hdr_len + proto_len;
82bf5c08 4360 data_offset = push_len + proto_len;
fc69660b 4361 }
e517b649 4362 memset(hdr, 0, hw_hdr_len);
17f3a8b5 4363 fill_header(queue, hdr, skb, proto, frame_len);
82bf5c08
JW		 4364 if (is_tso)
4365 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4366 frame_len - proto_len, skb, proto_len);
fc69660b 4367
fc69660b 4368 if (IS_IQD(card)) {
9549d70a
JW		 4369 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4370 hd_len);
fc69660b
JW		 4371 } else {
4372 /* TODO: drop skb_orphan() once TX completion is fast enough */
4373 skb_orphan(skb);
a1668474 4374 spin_lock(&queue->lock);
fc69660b
JW		 4375 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4376 hd_len, elements);
a1668474 4377 spin_unlock(&queue->lock);
fc69660b
JW		 4378 }
4379
eeac0e20
JW		 4380 if (rc && !push_len)
4381 kmem_cache_free(qeth_core_header_cache, hdr);
4382
fc69660b
JW		 4383 return rc;
4384}
4385EXPORT_SYMBOL_GPL(qeth_xmit);
4386
4a71df50
FB		 4387static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4388 struct qeth_reply *reply, unsigned long data)
4389{
686c97ee 4390 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4a71df50
FB		 4391 struct qeth_ipacmd_setadpparms *setparms;
4392
847a50fd 4393 QETH_CARD_TEXT(card, 4, "prmadpcb");
4a71df50 4394
4a71df50 4395 setparms = &(cmd->data.setadapterparms);
686c97ee 4396 if (qeth_setadpparms_inspect_rc(cmd)) {
8a593148 4397 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4a71df50
FB		 4398 setparms->data.mode = SET_PROMISC_MODE_OFF;
4399 }
4400 card->info.promisc_mode = setparms->data.mode;
742d4d40 4401 return (cmd->hdr.return_code) ? -EIO : 0;
4a71df50
FB		 4402}
4403
59b757a9 4404void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4a71df50 4405{
59b757a9
JW		 4406 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4407 SET_PROMISC_MODE_OFF;
4a71df50
FB		 4408 struct qeth_cmd_buffer *iob;
4409 struct qeth_ipa_cmd *cmd;
4410
847a50fd 4411 QETH_CARD_TEXT(card, 4, "setprom");
847a50fd 4412 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4a71df50
FB		 4413
4414 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
b9150461 4415 SETADP_DATA_SIZEOF(mode));
1aec42bc
TR		 4416 if (!iob)
4417 return;
ff5caa7a 4418 cmd = __ipa_cmd(iob);
4a71df50
FB		 4419 cmd->data.setadapterparms.data.mode = mode;
4420 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4421}
4422EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4423
4a71df50
FB		 4424static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4425 struct qeth_reply *reply, unsigned long data)
4426{
686c97ee 4427 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
b144b99f 4428 struct qeth_ipacmd_setadpparms *adp_cmd;
4a71df50 4429
847a50fd 4430 QETH_CARD_TEXT(card, 4, "chgmaccb");
686c97ee 4431 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4432 return -EIO;
4a71df50 4433
b144b99f 4434 adp_cmd = &cmd->data.setadapterparms;
4b7ae122
JW		 4435 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4436 return -EADDRNOTAVAIL;
4437
b144b99f
JW		 4438 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4439 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4b7ae122 4440 return -EADDRNOTAVAIL;
b144b99f 4441
978bb0ae 4442 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4a71df50
FB		 4443 return 0;
4444}
4445
4446int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4447{
4448 int rc;
4449 struct qeth_cmd_buffer *iob;
4450 struct qeth_ipa_cmd *cmd;
4451
847a50fd 4452 QETH_CARD_TEXT(card, 4, "chgmac");
4a71df50
FB		 4453
4454 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
b9150461 4455 SETADP_DATA_SIZEOF(change_addr));
1aec42bc
TR		 4456 if (!iob)
4457 return -ENOMEM;
ff5caa7a 4458 cmd = __ipa_cmd(iob);
4a71df50 4459 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
99f0b85d
JW		 4460 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4461 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4462 card->dev->dev_addr);
4a71df50
FB		 4463 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4464 NULL);
4465 return rc;
4466}
4467EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4468
d64ecc22
EL		 4469static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4470 struct qeth_reply *reply, unsigned long data)
4471{
686c97ee 4472 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
d64ecc22 4473 struct qeth_set_access_ctrl *access_ctrl_req;
d64ecc22 4474
847a50fd 4475 QETH_CARD_TEXT(card, 4, "setaccb");
d64ecc22 4476
d64ecc22 4477 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
57a688aa
JW		 4478 QETH_CARD_TEXT_(card, 2, "rc=%d",
4479 cmd->data.setadapterparms.hdr.return_code);
0f54761d
SR		 4480 if (cmd->data.setadapterparms.hdr.return_code !=
4481 SET_ACCESS_CTRL_RC_SUCCESS)
e19e5be8
JW		 4482 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4483 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4484 cmd->data.setadapterparms.hdr.return_code);
e2dfcfba 4485 switch (qeth_setadpparms_inspect_rc(cmd)) {
d64ecc22 4486 case SET_ACCESS_CTRL_RC_SUCCESS:
65878fd9 4487 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
d64ecc22
EL		 4488 dev_info(&card->gdev->dev,
4489 "QDIO data connection isolation is deactivated\n");
65878fd9 4490 else
d64ecc22
EL		 4491 dev_info(&card->gdev->dev,
4492 "QDIO data connection isolation is activated\n");
65878fd9 4493 return 0;
0f54761d 4494 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
e19e5be8
JW		 4495 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4496 CARD_DEVID(card));
65878fd9 4497 return 0;
0f54761d 4498 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
e19e5be8
JW		 4499 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4500 CARD_DEVID(card));
65878fd9 4501 return 0;
d64ecc22 4502 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
d64ecc22
EL		 4503 dev_err(&card->gdev->dev, "Adapter does not "
4504 "support QDIO data connection isolation\n");
65878fd9 4505 return -EOPNOTSUPP;
d64ecc22 4506 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
d64ecc22
EL		 4507 dev_err(&card->gdev->dev,
4508 "Adapter is dedicated. "
4509 "QDIO data connection isolation not supported\n");
65878fd9 4510 return -EOPNOTSUPP;
d64ecc22 4511 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
d64ecc22
EL		 4512 dev_err(&card->gdev->dev,
4513 "TSO does not permit QDIO data connection isolation\n");
65878fd9 4514 return -EPERM;
0f54761d
SR		 4515 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4516 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4517 "support reflective relay mode\n");
65878fd9 4518 return -EOPNOTSUPP;
0f54761d
SR		 4519 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4520 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4521 "enabled at the adjacent switch port");
65878fd9 4522 return -EREMOTEIO;
0f54761d
SR		 4523 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4524 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4525 "at the adjacent switch failed\n");
65878fd9
JW		 4526 /* benign error while disabling ISOLATION_MODE_FWD */
4527 return 0;
d64ecc22 4528 default:
65878fd9 4529 return -EIO;
d64ecc22 4530 }
d64ecc22
EL		 4531}
4532
65878fd9
JW		 4533int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4534 enum qeth_ipa_isolation_modes mode)
d64ecc22
EL		 4535{
4536 int rc;
4537 struct qeth_cmd_buffer *iob;
4538 struct qeth_ipa_cmd *cmd;
4539 struct qeth_set_access_ctrl *access_ctrl_req;
4540
847a50fd 4541 QETH_CARD_TEXT(card, 4, "setacctl");
d64ecc22 4542
65878fd9
JW		 4543 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4544 dev_err(&card->gdev->dev,
4545 "Adapter does not support QDIO data connection isolation\n");
4546 return -EOPNOTSUPP;
4547 }
4548
d64ecc22 4549 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
b9150461 4550 SETADP_DATA_SIZEOF(set_access_ctrl));
1aec42bc
TR		 4551 if (!iob)
4552 return -ENOMEM;
ff5caa7a 4553 cmd = __ipa_cmd(iob);
d64ecc22 4554 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
65878fd9 4555 access_ctrl_req->subcmd_code = mode;
d64ecc22
EL		 4556
4557 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
65878fd9 4558 NULL);
62f0379c 4559 if (rc) {
65878fd9 4560 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
62f0379c
JW		 4561 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4562 rc, CARD_DEVID(card));
d64ecc22 4563 }
65878fd9 4564
d64ecc22
EL		 4565 return rc;
4566}
d64ecc22 4567
0290bd29 4568void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4a71df50
FB		 4569{
4570 struct qeth_card *card;
4571
509e2562 4572 card = dev->ml_priv;
847a50fd 4573 QETH_CARD_TEXT(card, 4, "txtimeo");
4a71df50
FB		 4574 qeth_schedule_recovery(card);
4575}
4576EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4577
942d6984 4578static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4a71df50 4579{
509e2562 4580 struct qeth_card *card = dev->ml_priv;
4a71df50
FB		 4581 int rc = 0;
4582
4583 switch (regnum) {
4584 case MII_BMCR: /* Basic mode control register */
4585 rc = BMCR_FULLDPLX;
4586 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
54e049c2
JW		 4587 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4588 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4a71df50
FB		 4589 rc |= BMCR_SPEED100;
4590 break;
4591 case MII_BMSR: /* Basic mode status register */
4592 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4593 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4594 BMSR_100BASE4;
4595 break;
4596 case MII_PHYSID1: /* PHYS ID 1 */
4597 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4598 dev->dev_addr[2];
4599 rc = (rc >> 5) & 0xFFFF;
4600 break;
4601 case MII_PHYSID2: /* PHYS ID 2 */
4602 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4603 break;
4604 case MII_ADVERTISE: /* Advertisement control reg */
4605 rc = ADVERTISE_ALL;
4606 break;
4607 case MII_LPA: /* Link partner ability reg */
4608 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4609 LPA_100BASE4 | LPA_LPACK;
4610 break;
4611 case MII_EXPANSION: /* Expansion register */
4612 break;
4613 case MII_DCOUNTER: /* disconnect counter */
4614 break;
4615 case MII_FCSCOUNTER: /* false carrier counter */
4616 break;
4617 case MII_NWAYTEST: /* N-way auto-neg test register */
4618 break;
4619 case MII_RERRCOUNTER: /* rx error counter */
5fd3fcbb
JW		 4620 rc = card->stats.rx_length_errors +
4621 card->stats.rx_frame_errors +
4622 card->stats.rx_fifo_errors;
4a71df50
FB		 4623 break;
4624 case MII_SREVISION: /* silicon revision */
4625 break;
4626 case MII_RESV1: /* reserved 1 */
4627 break;
4628 case MII_LBRERROR: /* loopback, rx, bypass error */
4629 break;
4630 case MII_PHYADDR: /* physical address */
4631 break;
4632 case MII_RESV2: /* reserved 2 */
4633 break;
4634 case MII_TPISTATUS: /* TPI status for 10mbps */
4635 break;
4636 case MII_NCONFIG: /* network interface config */
4637 break;
4638 default:
4639 break;
4640 }
4641 return rc;
4642}
4a71df50 4643
4a71df50 4644static int qeth_snmp_command_cb(struct qeth_card *card,
7c5f8ffb 4645 struct qeth_reply *reply, unsigned long data)
4a71df50 4646{
7c5f8ffb
JW		 4647 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4648 struct qeth_arp_query_info *qinfo = reply->param;
4649 struct qeth_ipacmd_setadpparms *adp_cmd;
4650 unsigned int data_len;
9a764c1e 4651 void *snmp_data;
4a71df50 4652
847a50fd 4653 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4a71df50 4654
4a71df50 4655 if (cmd->hdr.return_code) {
8a593148 4656 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4b7ae122 4657 return -EIO;
4a71df50
FB		 4658 }
4659 if (cmd->data.setadapterparms.hdr.return_code) {
4660 cmd->hdr.return_code =
4661 cmd->data.setadapterparms.hdr.return_code;
8a593148 4662 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4b7ae122 4663 return -EIO;
4a71df50 4664 }
7c5f8ffb
JW		 4665
4666 adp_cmd = &cmd->data.setadapterparms;
4667 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4668 if (adp_cmd->hdr.seq_no == 1) {
4669 snmp_data = &adp_cmd->data.snmp;
9a764c1e 4670 } else {
7c5f8ffb
JW		 4671 snmp_data = &adp_cmd->data.snmp.request;
4672 data_len -= offsetof(struct qeth_snmp_cmd, request);
9a764c1e 4673 }
4a71df50
FB		 4674
4675 /* check if there is enough room in userspace */
4676 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4b7ae122
JW		 4677 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4678 return -ENOSPC;
4a71df50 4679 }
847a50fd 4680 QETH_CARD_TEXT_(card, 4, "snore%i",
d4c08afa 4681 cmd->data.setadapterparms.hdr.used_total);
847a50fd 4682 QETH_CARD_TEXT_(card, 4, "sseqn%i",
d4c08afa 4683 cmd->data.setadapterparms.hdr.seq_no);
4a71df50 4684 /*copy entries to user buffer*/
9a764c1e 4685 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4a71df50 4686 qinfo->udata_offset += data_len;
9a764c1e 4687
4a71df50
FB		 4688 if (cmd->data.setadapterparms.hdr.seq_no <
4689 cmd->data.setadapterparms.hdr.used_total)
4690 return 1;
4691 return 0;
4692}
4693
942d6984 4694static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4a71df50 4695{
d4c08afa 4696 struct qeth_snmp_ureq __user *ureq;
4a71df50 4697 struct qeth_cmd_buffer *iob;
6fb392b1 4698 unsigned int req_len;
4a71df50
FB		 4699 struct qeth_arp_query_info qinfo = {0, };
4700 int rc = 0;
4701
847a50fd 4702 QETH_CARD_TEXT(card, 3, "snmpcmd");
4a71df50 4703
379ac99e 4704 if (IS_VM_NIC(card))
4a71df50
FB		 4705 return -EOPNOTSUPP;
4706
4707 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4fda3354 4708 IS_LAYER3(card))
4a71df50 4709 return -EOPNOTSUPP;
4fda3354 4710
d4c08afa
JW		 4711 ureq = (struct qeth_snmp_ureq __user *) udata;
4712 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4713 get_user(req_len, &ureq->hdr.req_len))
4714 return -EFAULT;
4715
292a50e3
JW		 4716 /* Sanitize user input, to avoid overflows in iob size calculation: */
4717 if (req_len > QETH_BUFSIZE)
4718 return -EINVAL;
4719
d4c08afa
JW		 4720 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4721 if (!iob)
4722 return -ENOMEM;
4723
4724 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4725 &ureq->cmd, req_len)) {
4726 qeth_put_cmd(iob);
4a71df50 4727 return -EFAULT;
d4c08afa
JW		 4728 }
4729
4a71df50
FB		 4730 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4731 if (!qinfo.udata) {
d4c08afa 4732 qeth_put_cmd(iob);
4a71df50
FB		 4733 return -ENOMEM;
4734 }
4735 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4736
c2153277 4737 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4a71df50 4738 if (rc)
e19e5be8
JW		 4739 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4740 CARD_DEVID(card), rc);
4a71df50
FB		 4741 else {
4742 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4743 rc = -EFAULT;
4744 }
d4c08afa 4745
4a71df50
FB		 4746 kfree(qinfo.udata);
4747 return rc;
4748}
4a71df50 4749
c3ab96f3 4750static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4b2eee35
JW		 4751 struct qeth_reply *reply,
4752 unsigned long data)
c3ab96f3 4753{
686c97ee 4754 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4b2eee35 4755 struct qeth_qoat_priv *priv = reply->param;
c3ab96f3
FB		 4756 int resdatalen;
4757
4758 QETH_CARD_TEXT(card, 3, "qoatcb");
686c97ee 4759 if (qeth_setadpparms_inspect_rc(cmd))
4b7ae122 4760 return -EIO;
c3ab96f3 4761
c3ab96f3 4762 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
c3ab96f3 4763
4b7ae122
JW		 4764 if (resdatalen > (priv->buffer_len - priv->response_len))
4765 return -ENOSPC;
c3ab96f3 4766
f7ec2d2a
JW		 4767 memcpy(priv->buffer + priv->response_len,
4768 &cmd->data.setadapterparms.hdr, resdatalen);
c3ab96f3
FB		 4769 priv->response_len += resdatalen;
4770
4771 if (cmd->data.setadapterparms.hdr.seq_no <
4772 cmd->data.setadapterparms.hdr.used_total)
4773 return 1;
4774 return 0;
4775}
4776
942d6984 4777static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
c3ab96f3
FB		 4778{
4779 int rc = 0;
4780 struct qeth_cmd_buffer *iob;
4781 struct qeth_ipa_cmd *cmd;
4782 struct qeth_query_oat *oat_req;
4783 struct qeth_query_oat_data oat_data;
4784 struct qeth_qoat_priv priv;
4785 void __user *tmp;
4786
4787 QETH_CARD_TEXT(card, 3, "qoatcmd");
4788
4b2eee35
JW		 4789 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4790 return -EOPNOTSUPP;
c3ab96f3 4791
4b2eee35
JW		 4792 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4793 return -EFAULT;
c3ab96f3
FB		 4794
4795 priv.buffer_len = oat_data.buffer_len;
4796 priv.response_len = 0;
aec45e85 4797 priv.buffer = vzalloc(oat_data.buffer_len);
4b2eee35
JW		 4798 if (!priv.buffer)
4799 return -ENOMEM;
c3ab96f3
FB		 4800
4801 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
b9150461 4802 SETADP_DATA_SIZEOF(query_oat));
1aec42bc
TR		 4803 if (!iob) {
4804 rc = -ENOMEM;
4805 goto out_free;
4806 }
ff5caa7a 4807 cmd = __ipa_cmd(iob);
c3ab96f3
FB		 4808 oat_req = &cmd->data.setadapterparms.data.query_oat;
4809 oat_req->subcmd_code = oat_data.command;
4810
4b2eee35 4811 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
c3ab96f3 4812 if (!rc) {
2ccd31f8
JW		 4813 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4814 u64_to_user_ptr(oat_data.ptr);
c3ab96f3
FB		 4815 oat_data.response_len = priv.response_len;
4816
4b2eee35
JW		 4817 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4818 copy_to_user(udata, &oat_data, sizeof(oat_data)))
c3ab96f3 4819 rc = -EFAULT;
4b7ae122 4820 }
c3ab96f3
FB		 4821
4822out_free:
aec45e85 4823 vfree(priv.buffer);
c3ab96f3
FB		 4824 return rc;
4825}
c3ab96f3 4826
e92d42e7
JW		 4827static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4828 struct qeth_reply *reply_priv,
4829 unsigned long data)
4830{
4831 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4832 struct qeth_link_info *link_info = reply_priv->param;
4833 struct qeth_query_oat_physical_if *phys_if;
4834 struct qeth_query_oat_reply *reply;
4835
7a07a29e 4836 QETH_CARD_TEXT(card, 2, "qoatincb");
e92d42e7
JW		 4837 if (qeth_setadpparms_inspect_rc(cmd))
4838 return -EIO;
4839
4840 /* Multi-part reply is unexpected, don't bother: */
4841 if (cmd->data.setadapterparms.hdr.used_total > 1)
4842 return -EINVAL;
4843
4844 /* Expect the reply to start with phys_if data: */
4845 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4846 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4847 reply->length < sizeof(*reply))
4848 return -EINVAL;
4849
4850 phys_if = &reply->phys_if;
4851
4852 switch (phys_if->speed_duplex) {
4853 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4854 link_info->speed = SPEED_10;
4855 link_info->duplex = DUPLEX_HALF;
4856 break;
4857 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4858 link_info->speed = SPEED_10;
4859 link_info->duplex = DUPLEX_FULL;
4860 break;
4861 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4862 link_info->speed = SPEED_100;
4863 link_info->duplex = DUPLEX_HALF;
4864 break;
4865 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4866 link_info->speed = SPEED_100;
4867 link_info->duplex = DUPLEX_FULL;
4868 break;
4869 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4870 link_info->speed = SPEED_1000;
4871 link_info->duplex = DUPLEX_HALF;
4872 break;
4873 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4874 link_info->speed = SPEED_1000;
4875 link_info->duplex = DUPLEX_FULL;
4876 break;
4877 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4878 link_info->speed = SPEED_10000;
4879 link_info->duplex = DUPLEX_FULL;
4880 break;
4881 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4882 link_info->speed = SPEED_25000;
4883 link_info->duplex = DUPLEX_FULL;
4884 break;
4885 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4886 default:
4887 link_info->speed = SPEED_UNKNOWN;
4888 link_info->duplex = DUPLEX_UNKNOWN;
4889 break;
4890 }
4891
4892 switch (phys_if->media_type) {
4893 case QETH_QOAT_PHYS_MEDIA_COPPER:
4894 link_info->port = PORT_TP;
235db527 4895 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4896 break;
4897 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
235db527
JW		 4898 link_info->port = PORT_FIBRE;
4899 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4900 break;
e92d42e7
JW		 4901 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4902 link_info->port = PORT_FIBRE;
235db527 4903 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
e92d42e7
JW		 4904 break;
4905 default:
4906 link_info->port = PORT_OTHER;
235db527 4907 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
e92d42e7
JW		 4908 break;
4909 }
4910
4911 return 0;
4912}
4913
baf7998d
JW		 4914static void qeth_init_link_info(struct qeth_card *card)
4915{
7a07a29e 4916 qeth_default_link_info(card);
e92d42e7
JW		 4917
4918 /* Get more accurate data via QUERY OAT: */
4919 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4920 struct qeth_link_info link_info;
4921 struct qeth_cmd_buffer *iob;
4922
4923 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4924 SETADP_DATA_SIZEOF(query_oat));
4925 if (iob) {
4926 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4927 struct qeth_query_oat *oat_req;
4928
4929 oat_req = &cmd->data.setadapterparms.data.query_oat;
4930 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4931
4932 if (!qeth_send_ipa_cmd(card, iob,
4933 qeth_init_link_info_oat_cb,
4934 &link_info)) {
4935 if (link_info.speed != SPEED_UNKNOWN)
4936 card->info.link_info.speed = link_info.speed;
4937 if (link_info.duplex != DUPLEX_UNKNOWN)
4938 card->info.link_info.duplex = link_info.duplex;
4939 if (link_info.port != PORT_OTHER)
4940 card->info.link_info.port = link_info.port;
235db527
JW		 4941 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4942 card->info.link_info.link_mode = link_info.link_mode;
e92d42e7
JW		 4943 }
4944 }
4945 }
baf7998d
JW		 4946}
4947
ec61bd2f
JW		 4948/**
4949 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4950 * @card: pointer to a qeth_card
4951 *
4952 * Returns
4953 * 0, if a MAC address has been set for the card's netdevice
4954 * a return code, for various error conditions
4955 */
4956int qeth_vm_request_mac(struct qeth_card *card)
4957{
4958 struct diag26c_mac_resp *response;
4959 struct diag26c_mac_req *request;
ec61bd2f
JW		 4960 int rc;
4961
57a688aa 4962 QETH_CARD_TEXT(card, 2, "vmreqmac");
ec61bd2f 4963
ec61bd2f
JW		 4964 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4965 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4966 if (!request || !response) {
4967 rc = -ENOMEM;
4968 goto out;
4969 }
4970
ec61bd2f
JW		 4971 request->resp_buf_len = sizeof(*response);
4972 request->resp_version = DIAG26C_VERSION2;
4973 request->op_code = DIAG26C_GET_MAC;
fa115adf 4974 request->devno = card->info.ddev_devno;
ec61bd2f 4975
615dff22 4976 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f 4977 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
615dff22 4978 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
ec61bd2f
JW		 4979 if (rc)
4980 goto out;
615dff22 4981 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
ec61bd2f
JW		 4982
4983 if (request->resp_buf_len < sizeof(*response) ||
4984 response->version != request->resp_version) {
4985 rc = -EIO;
57a688aa
JW		 4986 QETH_CARD_TEXT(card, 2, "badresp");
4987 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4988 sizeof(request->resp_buf_len));
ec61bd2f
JW		 4989 } else if (!is_valid_ether_addr(response->mac)) {
4990 rc = -EINVAL;
57a688aa
JW		 4991 QETH_CARD_TEXT(card, 2, "badmac");
4992 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
ec61bd2f 4993 } else {
978bb0ae 4994 eth_hw_addr_set(card->dev, response->mac);
ec61bd2f
JW		 4995 }
4996
4997out:
4998 kfree(response);
4999 kfree(request);
5000 return rc;
5001}
5002EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5003
d0ff1f52
UB		 5004static void qeth_determine_capabilities(struct qeth_card *card)
5005{
f9e50b02
JW		 5006 struct qeth_channel *channel = &card->data;
5007 struct ccw_device *ddev = channel->ccwdev;
d0ff1f52 5008 int rc;
d0ff1f52
UB		 5009 int ddev_offline = 0;
5010
57a688aa 5011 QETH_CARD_TEXT(card, 2, "detcapab");
d0ff1f52
UB		 5012 if (!ddev->online) {
5013 ddev_offline = 1;
871602b1 5014 rc = qeth_start_channel(channel);
d0ff1f52 5015 if (rc) {
57a688aa 5016 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
d0ff1f52
UB		 5017 goto out;
5018 }
5019 }
5020
2066e1db 5021 rc = qeth_read_conf_data(card);
d0ff1f52 5022 if (rc) {
e19e5be8
JW		 5023 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5024 CARD_DEVID(card), rc);
57a688aa 5025 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
d0ff1f52
UB		 5026 goto out_offline;
5027 }
d0ff1f52
UB		 5028
5029 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5030 if (rc)
57a688aa 5031 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
d0ff1f52 5032
57a688aa
JW		 5033 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5034 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5035 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5036 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5037 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
0da9581d
EL		 5038 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5039 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5040 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5041 dev_info(&card->gdev->dev,
5042 "Completion Queueing supported\n");
5043 } else {
5044 card->options.cq = QETH_CQ_NOTAVAILABLE;
5045 }
5046
d0ff1f52
UB		 5047out_offline:
5048 if (ddev_offline == 1)
f9e50b02 5049 qeth_stop_channel(channel);
d0ff1f52
UB		 5050out:
5051 return;
5052}
5053
fa115adf
AW		 5054static void qeth_read_ccw_conf_data(struct qeth_card *card)
5055{
5056 struct qeth_card_info *info = &card->info;
5057 struct ccw_device *cdev = CARD_DDEV(card);
5058 struct ccw_dev_id dev_id;
5059
5060 QETH_CARD_TEXT(card, 2, "ccwconfd");
5061 ccw_device_get_id(cdev, &dev_id);
5062
5063 info->ddev_devno = dev_id.devno;
5064 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5065 !ccw_device_get_iid(cdev, &info->iid) &&
5066 !ccw_device_get_chid(cdev, 0, &info->chid);
5067 info->ssid = dev_id.ssid;
5068
5069 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5070 info->chid, info->chpid);
5071
5072 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5073 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5074 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5075 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5076 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5077 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5078 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5079}
5080
4a71df50
FB		 5081static int qeth_qdio_establish(struct qeth_card *card)
5082{
d8564e19
JW		 5083 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5084 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
72d5e850 5085 struct qeth_qib_parms *qib_parms = NULL;
4a71df50 5086 struct qdio_initialize init_data;
dc15012b 5087 unsigned int no_input_qs = 1;
d8564e19 5088 unsigned int i;
4a71df50
FB		 5089 int rc = 0;
5090
57a688aa 5091 QETH_CARD_TEXT(card, 2, "qdioest");
4a71df50 5092
72d5e850
JW		 5093 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5094 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5095 if (!qib_parms)
5096 return -ENOMEM;
4a71df50 5097
72d5e850
JW		 5098 qeth_fill_qib_parms(card, qib_parms);
5099 }
4a71df50 5100
d8564e19 5101 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
dc15012b 5102 if (card->options.cq == QETH_CQ_ENABLED) {
d8564e19 5103 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
dc15012b
JW		 5104 no_input_qs++;
5105 }
e9091ffd 5106
d8564e19
JW		 5107 for (i = 0; i < card->qdio.no_out_queues; i++)
5108 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
4a71df50
FB		 5109
5110 memset(&init_data, 0, sizeof(struct qdio_initialize));
379ac99e
JW		 5111 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5112 QDIO_QETH_QFMT;
4a71df50 5113 init_data.qib_param_field_format = 0;
72d5e850 5114 init_data.qib_param_field = (void *)qib_parms;
dc15012b 5115 init_data.no_input_qs = no_input_qs;
4a71df50 5116 init_data.no_output_qs = card->qdio.no_out_queues;
7bcd64eb
JW		 5117 init_data.input_handler = qeth_qdio_input_handler;
5118 init_data.output_handler = qeth_qdio_output_handler;
0a6e6345 5119 init_data.irq_poll = qeth_qdio_poll;
4a71df50 5120 init_data.int_parm = (unsigned long) card;
bdf11767
JW		 5121 init_data.input_sbal_addr_array = in_sbal_ptrs;
5122 init_data.output_sbal_addr_array = out_sbal_ptrs;
4a71df50
FB		 5123
5124 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5125 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
3db1db93
JW		 5126 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5127 init_data.no_output_qs);
cc961d40
JG		 5128 if (rc) {
5129 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5130 goto out;
5131 }
1da1092d 5132 rc = qdio_establish(CARD_DDEV(card), &init_data);
cc961d40 5133 if (rc) {
4a71df50 5134 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
cc961d40
JG		 5135 qdio_free(CARD_DDEV(card));
5136 }
4a71df50 5137 }
0da9581d
EL		 5138
5139 switch (card->options.cq) {
5140 case QETH_CQ_ENABLED:
5141 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5142 break;
5143 case QETH_CQ_DISABLED:
5144 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5145 break;
5146 default:
5147 break;
5148 }
72d5e850 5149
cc961d40 5150out:
72d5e850 5151 kfree(qib_parms);
4a71df50
FB		 5152 return rc;
5153}
5154
5155static void qeth_core_free_card(struct qeth_card *card)
5156{
57a688aa 5157 QETH_CARD_TEXT(card, 2, "freecrd");
fb8d2580
JW		 5158
5159 unregister_service_level(&card->qeth_service_level);
5160 debugfs_remove_recursive(card->debugfs);
c3b2218d 5161 qeth_put_cmd(card->read_cmd);
c0a2e4d1 5162 destroy_workqueue(card->event_wq);
a2eb0ad5 5163 dev_set_drvdata(&card->gdev->dev, NULL);
4a71df50
FB		 5164 kfree(card);
5165}
5166
b7ea041b 5167static void qeth_trace_features(struct qeth_card *card)
395672e0
SR		 5168{
5169 QETH_CARD_TEXT(card, 2, "features");
4d7def2a
TR		 5170 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5171 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5172 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5173 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5174 sizeof(card->info.diagass_support));
395672e0 5175}
395672e0 5176
4a71df50 5177static struct ccw_device_id qeth_ids[] = {
5113fec0
UB		 5178 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5179 .driver_info = QETH_CARD_TYPE_OSD},
5180 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5181 .driver_info = QETH_CARD_TYPE_IQD},
5113fec0
UB		 5182 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5183 .driver_info = QETH_CARD_TYPE_OSM},
4e2b5aa5 5184#ifdef CONFIG_QETH_OSX
5113fec0
UB		 5185 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5186 .driver_info = QETH_CARD_TYPE_OSX},
4e2b5aa5 5187#endif
4a71df50
FB		 5188 {},
5189};
5190MODULE_DEVICE_TABLE(ccw, qeth_ids);
5191
5192static struct ccw_driver qeth_ccw_driver = {
3bda058b 5193 .driver = {
3e70b3b8 5194 .owner = THIS_MODULE,
3bda058b
SO		 5195 .name = "qeth",
5196 },
4a71df50
FB		 5197 .ids = qeth_ids,
5198 .probe = ccwgroup_probe_ccwdev,
5199 .remove = ccwgroup_remove_ccwdev,
5200};
5201
b7ea041b 5202static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4a71df50 5203{
6ebb7f8d 5204 int retries = 3;
4a71df50
FB		 5205 int rc;
5206
57a688aa 5207 QETH_CARD_TEXT(card, 2, "hrdsetup");
4a71df50 5208 atomic_set(&card->force_alloc_skb, 0);
a4cdc9ba
JW		 5209 rc = qeth_update_from_chp_desc(card);
5210 if (rc)
5211 return rc;
4a71df50 5212retry:
6ebb7f8d 5213 if (retries < 3)
e19e5be8
JW		 5214 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5215 CARD_DEVID(card));
379ac99e 5216 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
f9e50b02
JW		 5217 qeth_stop_channel(&card->data);
5218 qeth_stop_channel(&card->write);
5219 qeth_stop_channel(&card->read);
22ae2790 5220 qdio_free(CARD_DDEV(card));
871602b1
JW		 5221
5222 rc = qeth_start_channel(&card->read);
aa909224
UB		 5223 if (rc)
5224 goto retriable;
871602b1 5225 rc = qeth_start_channel(&card->write);
aa909224
UB		 5226 if (rc)
5227 goto retriable;
871602b1 5228 rc = qeth_start_channel(&card->data);
aa909224
UB		 5229 if (rc)
5230 goto retriable;
aa909224 5231retriable:
4a71df50 5232 if (rc == -ERESTARTSYS) {
57a688aa 5233 QETH_CARD_TEXT(card, 2, "break1");
4a71df50
FB		 5234 return rc;
5235 } else if (rc) {
57a688aa 5236 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
6ebb7f8d 5237 if (--retries < 0)
4a71df50
FB		 5238 goto out;
5239 else
5240 goto retry;
5241 }
7f23d55f 5242
d0ff1f52 5243 qeth_determine_capabilities(card);
fa115adf 5244 qeth_read_ccw_conf_data(card);
7f23d55f 5245 qeth_idx_init(card);
2e873d10
JW		 5246
5247 rc = qeth_idx_activate_read_channel(card);
5248 if (rc == -EINTR) {
57a688aa 5249 QETH_CARD_TEXT(card, 2, "break2");
4a71df50
FB		 5250 return rc;
5251 } else if (rc) {
57a688aa 5252 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4a71df50
FB		 5253 if (--retries < 0)
5254 goto out;
5255 else
5256 goto retry;
5257 }
2e873d10
JW		 5258
5259 rc = qeth_idx_activate_write_channel(card);
5260 if (rc == -EINTR) {
57a688aa 5261 QETH_CARD_TEXT(card, 2, "break3");
4a71df50
FB		 5262 return rc;
5263 } else if (rc) {
57a688aa 5264 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4a71df50
FB		 5265 if (--retries < 0)
5266 goto out;
5267 else
5268 goto retry;
5269 }
908abbb5 5270 card->read_or_write_problem = 0;
4a71df50
FB		 5271 rc = qeth_mpc_initialize(card);
5272 if (rc) {
57a688aa 5273 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4a71df50
FB		 5274 goto out;
5275 }
1da74b1c 5276
10340510
JW		 5277 rc = qeth_send_startlan(card);
5278 if (rc) {
57a688aa 5279 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4b7ae122
JW		 5280 if (rc == -ENETDOWN) {
5281 dev_warn(&card->gdev->dev, "The LAN is offline\n");
9fae5c3b 5282 *carrier_ok = false;
10340510 5283 } else {
10340510
JW		 5284 goto out;
5285 }
91cc98f5 5286 } else {
9fae5c3b
JW		 5287 *carrier_ok = true;
5288 }
5289
52f82bf1
JW		 5290 card->options.ipa4.supported = 0;
5291 card->options.ipa6.supported = 0;
5292 card->options.adp.supported = 0;
b4d72c08 5293 card->options.sbp.supported_funcs = 0;
1da74b1c 5294 card->info.diagass_support = 0;
1aec42bc
TR		 5295 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5296 if (rc == -ENOMEM)
5297 goto out;
ee75fb86
KM		 5298 if (qeth_is_supported(card, IPA_IPV6)) {
5299 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5300 if (rc == -ENOMEM)
5301 goto out;
5302 }
1aec42bc
TR		 5303 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5304 rc = qeth_query_setadapterparms(card);
5305 if (rc < 0) {
57a688aa 5306 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
1aec42bc
TR		 5307 goto out;
5308 }
5309 }
5310 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5311 rc = qeth_query_setdiagass(card);
0b698c83 5312 if (rc)
57a688aa 5313 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
1aec42bc 5314 }
9897d583 5315
b7ea041b
JW		 5316 qeth_trace_features(card);
5317
9897d583
JW		 5318 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5319 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5320 card->info.hwtrap = 0;
5321
08e95cae 5322 if (card->options.isolation != ISOLATION_MODE_NONE) {
65878fd9
JW		 5323 rc = qeth_setadpparms_set_access_ctrl(card,
5324 card->options.isolation);
08e95cae
JW		 5325 if (rc)
5326 goto out;
5327 }
9897d583 5328
baf7998d
JW		 5329 qeth_init_link_info(card);
5330
aa3ad392
JW		 5331 rc = qeth_init_qdio_queues(card);
5332 if (rc) {
5333 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5334 goto out;
5335 }
5336
4a71df50
FB		 5337 return 0;
5338out:
74eacdb9
FB		 5339 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5340 "an error on the device\n");
e19e5be8
JW		 5341 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5342 CARD_DEVID(card), rc);
4a71df50
FB		 5343 return rc;
5344}
4a71df50 5345
0b9902c1
JW		 5346static int qeth_set_online(struct qeth_card *card,
5347 const struct qeth_discipline *disc)
91003f35 5348{
b7ea041b 5349 bool carrier_ok;
91003f35
JW		 5350 int rc;
5351
91003f35
JW		 5352 mutex_lock(&card->conf_mutex);
5353 QETH_CARD_TEXT(card, 2, "setonlin");
5354
b7ea041b
JW		 5355 rc = qeth_hardsetup_card(card, &carrier_ok);
5356 if (rc) {
5357 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5358 rc = -ENODEV;
5359 goto err_hardsetup;
5360 }
5361
5362 qeth_print_status_message(card);
5363
949bbf4d 5364 if (card->dev->reg_state != NETREG_REGISTERED)
bb5ab541
JW		 5365 /* no need for locking / error handling at this early stage: */
5366 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
bb5ab541 5367
0b9902c1 5368 rc = disc->set_online(card, carrier_ok);
b7ea041b
JW		 5369 if (rc)
5370 goto err_online;
5371
5372 /* let user_space know that device is online */
5373 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
91003f35
JW		 5374
5375 mutex_unlock(&card->conf_mutex);
b7ea041b 5376 return 0;
91003f35 5377
b7ea041b
JW		 5378err_online:
5379err_hardsetup:
f2bcf9dd
JW		 5380 qeth_qdio_clear_card(card, 0);
5381 qeth_clear_working_pool_list(card);
5382 qeth_flush_local_addrs(card);
5383
b7ea041b
JW		 5384 qeth_stop_channel(&card->data);
5385 qeth_stop_channel(&card->write);
5386 qeth_stop_channel(&card->read);
5387 qdio_free(CARD_DDEV(card));
5388
5389 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5390 return rc;
5391}
5392
0b9902c1
JW		 5393int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5394 bool resetting)
91003f35
JW		 5395{
5396 int rc, rc2, rc3;
5397
91003f35
JW		 5398 mutex_lock(&card->conf_mutex);
5399 QETH_CARD_TEXT(card, 3, "setoffl");
5400
5401 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5402 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5403 card->info.hwtrap = 1;
5404 }
5405
7fb7fe5c
JW		 5406 /* cancel any stalled cmd that might block the rtnl: */
5407 qeth_clear_ipacmd_list(card);
5408
91003f35 5409 rtnl_lock();
91003f35
JW		 5410 netif_device_detach(card->dev);
5411 netif_carrier_off(card->dev);
5412 rtnl_unlock();
5413
f2bcf9dd
JW		 5414 cancel_work_sync(&card->rx_mode_work);
5415
0b9902c1 5416 disc->set_offline(card);
91003f35 5417
f2bcf9dd
JW		 5418 qeth_qdio_clear_card(card, 0);
5419 qeth_drain_output_queues(card);
5420 qeth_clear_working_pool_list(card);
5421 qeth_flush_local_addrs(card);
5422 card->info.promisc_mode = 0;
7a07a29e 5423 qeth_default_link_info(card);
f2bcf9dd 5424
91003f35
JW		 5425 rc = qeth_stop_channel(&card->data);
5426 rc2 = qeth_stop_channel(&card->write);
5427 rc3 = qeth_stop_channel(&card->read);
5428 if (!rc)
5429 rc = (rc2) ? rc2 : rc3;
5430 if (rc)
5431 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5432 qdio_free(CARD_DDEV(card));
5433
5434 /* let user_space know that device is offline */
5435 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5436
5437 mutex_unlock(&card->conf_mutex);
91003f35
JW		 5438 return 0;
5439}
5440EXPORT_SYMBOL_GPL(qeth_set_offline);
5441
5442static int qeth_do_reset(void *data)
5443{
0b9902c1 5444 const struct qeth_discipline *disc;
91003f35
JW		 5445 struct qeth_card *card = data;
5446 int rc;
5447
0b9902c1
JW		 5448 /* Lock-free, other users will block until we are done. */
5449 disc = card->discipline;
5450
91003f35
JW		 5451 QETH_CARD_TEXT(card, 2, "recover1");
5452 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5453 return 0;
5454 QETH_CARD_TEXT(card, 2, "recover2");
5455 dev_warn(&card->gdev->dev,
5456 "A recovery process has been started for the device\n");
5457
0b9902c1
JW		 5458 qeth_set_offline(card, disc, true);
5459 rc = qeth_set_online(card, disc);
91003f35
JW		 5460 if (!rc) {
5461 dev_info(&card->gdev->dev,
5462 "Device successfully recovered!\n");
5463 } else {
d2b59bd4
AW		 5464 qeth_set_offline(card, disc, true);
5465 ccwgroup_set_offline(card->gdev, false);
91003f35
JW		 5466 dev_warn(&card->gdev->dev,
5467 "The qeth device driver failed to recover an error on the device\n");
5468 }
5469 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5470 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5471 return 0;
5472}
5473
c04b116a
JW		 5474#if IS_ENABLED(CONFIG_QETH_L3)
5475static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5476 struct qeth_hdr *hdr)
5477{
5478 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5479 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5480 struct net_device *dev = skb->dev;
5481
5482 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5483 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5484 "FAKELL", skb->len);
5485 return;
5486 }
5487
5488 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5489 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5490 ETH_P_IP;
5491 unsigned char tg_addr[ETH_ALEN];
5492
5493 skb_reset_network_header(skb);
5494 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5495 case QETH_CAST_MULTICAST:
5496 if (prot == ETH_P_IP)
5497 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5498 else
5499 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5500 QETH_CARD_STAT_INC(card, rx_multicast);
5501 break;
5502 case QETH_CAST_BROADCAST:
5503 ether_addr_copy(tg_addr, dev->broadcast);
5504 QETH_CARD_STAT_INC(card, rx_multicast);
5505 break;
5506 default:
5507 if (card->options.sniffer)
5508 skb->pkt_type = PACKET_OTHERHOST;
5509 ether_addr_copy(tg_addr, dev->dev_addr);
5510 }
5511
5512 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5513 dev_hard_header(skb, dev, prot, tg_addr,
5514 &l3_hdr->next_hop.rx.src_mac, skb->len);
5515 else
5516 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5517 skb->len);
5518 }
5519
5520 /* copy VLAN tag from hdr into skb */
5521 if (!card->options.sniffer &&
5522 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5523 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5524 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5525 l3_hdr->vlan_id :
5526 l3_hdr->next_hop.rx.vlan_id;
5527
5528 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5529 }
5530}
5531#endif
5532
5533static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5e9756a6 5534 bool uses_frags, bool is_cso)
c04b116a 5535{
dcdcf867 5536 struct napi_struct *napi = &card->napi;
c04b116a
JW		 5537
5538 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5539 skb->ip_summed = CHECKSUM_UNNECESSARY;
5540 QETH_CARD_STAT_INC(card, rx_skb_csum);
5541 } else {
5542 skb->ip_summed = CHECKSUM_NONE;
5543 }
5544
c04b116a
JW		 5545 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5546 QETH_CARD_STAT_INC(card, rx_packets);
5547 if (skb_is_nonlinear(skb)) {
5548 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5549 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5550 skb_shinfo(skb)->nr_frags);
5551 }
5552
dcdcf867
JW		 5553 if (uses_frags) {
5554 napi_gro_frags(napi);
5555 } else {
5556 skb->protocol = eth_type_trans(skb, skb->dev);
5557 napi_gro_receive(napi, skb);
5558 }
c04b116a
JW		 5559}
5560
f677fcb9 5561static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
4a71df50 5562{
f677fcb9 5563 struct page *page = virt_to_page(data);
b6f72f96 5564 unsigned int next_frag;
b3332930 5565
8d68af6a 5566 next_frag = skb_shinfo(skb)->nr_frags;
b6f72f96 5567 get_page(page);
f677fcb9
JW		 5568 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5569 data_len);
4a71df50
FB		 5570}
5571
bca51650
TR		 5572static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5573{
5574 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5575}
5576
c04b116a 5577static int qeth_extract_skb(struct qeth_card *card,
ed13615d 5578 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
c04b116a 5579 int *__offset)
4a71df50 5580{
562cf773 5581 struct qeth_priv *priv = netdev_priv(card->dev);
b3332930 5582 struct qdio_buffer *buffer = qethbuffer->buffer;
dcdcf867 5583 struct napi_struct *napi = &card->napi;
ed13615d 5584 struct qdio_buffer_element *element;
f677fcb9 5585 unsigned int linear_len = 0;
dcdcf867 5586 bool uses_frags = false;
4a71df50 5587 int offset = *__offset;
17caeaa4 5588 bool use_rx_sg = false;
f677fcb9 5589 unsigned int headroom;
c04b116a 5590 struct qeth_hdr *hdr;
8d68af6a 5591 struct sk_buff *skb;
76b11f8e 5592 int skb_len = 0;
5e9756a6 5593 bool is_cso;
4a71df50 5594
ed13615d
JW		 5595 element = &buffer->element[*element_no];
5596
7d4faee7 5597next_packet:
4a71df50 5598 /* qeth_hdr must not cross element boundaries */
864c17c3 5599 while (element->length < offset + sizeof(struct qeth_hdr)) {
4a71df50 5600 if (qeth_is_last_sbale(element))
c04b116a 5601 return -ENODATA;
4a71df50
FB		 5602 element++;
5603 offset = 0;
4a71df50 5604 }
4a71df50 5605
525b7d2e 5606 hdr = dma64_to_virt(element->addr) + offset;
c04b116a 5607 offset += sizeof(*hdr);
5b55633f
JW		 5608 skb = NULL;
5609
c04b116a 5610 switch (hdr->hdr.l2.id) {
76b11f8e 5611 case QETH_HEADER_TYPE_LAYER2:
c04b116a 5612 skb_len = hdr->hdr.l2.pkt_length;
5e9756a6
JW		 5613 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5614
5b55633f 5615 linear_len = ETH_HLEN;
17caeaa4 5616 headroom = 0;
76b11f8e
UB		 5617 break;
5618 case QETH_HEADER_TYPE_LAYER3:
c04b116a 5619 skb_len = hdr->hdr.l3.length;
5e9756a6
JW		 5620 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5621
7d4faee7
JW		 5622 if (!IS_LAYER3(card)) {
5623 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
7d4faee7
JW		 5624 goto walk_packet;
5625 }
5626
c04b116a 5627 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5b55633f
JW		 5628 linear_len = ETH_HLEN;
5629 headroom = 0;
5630 break;
5631 }
5632
c04b116a 5633 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5b55633f
JW		 5634 linear_len = sizeof(struct ipv6hdr);
5635 else
5636 linear_len = sizeof(struct iphdr);
1abd2296 5637 headroom = ETH_HLEN;
76b11f8e 5638 break;
76b11f8e 5639 default:
c04b116a 5640 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5fd3fcbb
JW		 5641 QETH_CARD_STAT_INC(card, rx_frame_errors);
5642 else
5643 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5644
7d4faee7 5645 /* Can't determine packet length, drop the whole buffer. */
c04b116a 5646 return -EPROTONOSUPPORT;
4a71df50
FB		 5647 }
5648
5b55633f
JW		 5649 if (skb_len < linear_len) {
5650 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5651 goto walk_packet;
5652 }
4a71df50 5653
17caeaa4 5654 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
562cf773 5655 (skb_len > READ_ONCE(priv->rx_copybreak) &&
a8c7629c 5656 !atomic_read(&card->force_alloc_skb));
8d68af6a 5657
dcdcf867 5658 if (use_rx_sg) {
8d68af6a 5659 /* QETH_CQ_ENABLED only: */
8ca8559f
JW		 5660 if (qethbuffer->rx_skb &&
5661 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
dcdcf867
JW		 5662 skb = qethbuffer->rx_skb;
5663 qethbuffer->rx_skb = NULL;
5664 goto use_skb;
5665 }
5666
5667 skb = napi_get_frags(napi);
5668 if (!skb) {
5669 /* -ENOMEM, no point in falling back further. */
5670 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5671 goto walk_packet;
5672 }
5673
5674 if (skb_tailroom(skb) >= linear_len + headroom) {
5675 uses_frags = true;
5676 goto use_skb;
5677 }
5678
5679 netdev_info_once(card->dev,
5680 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5681 linear_len + headroom, skb_tailroom(skb));
5682 /* Shouldn't happen. Don't optimize, fall back to linear skb. */
4a71df50 5683 }
17caeaa4 5684
dcdcf867
JW		 5685 linear_len = skb_len;
5686 skb = napi_alloc_skb(napi, linear_len + headroom);
5687 if (!skb) {
17caeaa4 5688 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
dcdcf867
JW		 5689 goto walk_packet;
5690 }
4a71df50 5691
dcdcf867
JW		 5692use_skb:
5693 if (headroom)
5694 skb_reserve(skb, headroom);
7d4faee7 5695walk_packet:
4a71df50 5696 while (skb_len) {
f677fcb9 5697 int data_len = min(skb_len, (int)(element->length - offset));
525b7d2e 5698 char *data = dma64_to_virt(element->addr) + offset;
f677fcb9
JW		 5699
5700 skb_len -= data_len;
5701 offset += data_len;
7d4faee7 5702
f677fcb9 5703 /* Extract data from current element: */
7d4faee7 5704 if (skb && data_len) {
f677fcb9
JW		 5705 if (linear_len) {
5706 unsigned int copy_len;
5707
5708 copy_len = min_t(unsigned int, linear_len,
5709 data_len);
5710
5711 skb_put_data(skb, data, copy_len);
5712 linear_len -= copy_len;
5713 data_len -= copy_len;
5714 data += copy_len;
5715 }
5716
5717 if (data_len)
5718 qeth_create_skb_frag(skb, data, data_len);
4a71df50 5719 }
f677fcb9
JW		 5720
5721 /* Step forward to next element: */
4a71df50
FB		 5722 if (skb_len) {
5723 if (qeth_is_last_sbale(element)) {
847a50fd 5724 QETH_CARD_TEXT(card, 4, "unexeob");
efd5d9a4 5725 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
7d4faee7 5726 if (skb) {
dcdcf867
JW		 5727 if (uses_frags)
5728 napi_free_frags(napi);
5729 else
fdd3c5f0 5730 kfree_skb(skb);
7d4faee7
JW		 5731 QETH_CARD_STAT_INC(card,
5732 rx_length_errors);
5733 }
c04b116a 5734 return -EMSGSIZE;
4a71df50
FB		 5735 }
5736 element++;
5737 offset = 0;
4a71df50
FB		 5738 }
5739 }
7d4faee7
JW		 5740
5741 /* This packet was skipped, go get another one: */
5742 if (!skb)
5743 goto next_packet;
5744
ed13615d 5745 *element_no = element - &buffer->element[0];
4a71df50 5746 *__offset = offset;
c04b116a 5747
5e9756a6
JW		 5748#if IS_ENABLED(CONFIG_QETH_L3)
5749 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5750 qeth_l3_rebuild_skb(card, skb, hdr);
5751#endif
5752
5753 qeth_receive_skb(card, skb, uses_frags, is_cso);
c04b116a
JW		 5754 return 0;
5755}
5756
781b9a18
JW		 5757static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5758 struct qeth_qdio_buffer *buf, bool *done)
c04b116a 5759{
781b9a18 5760 unsigned int work_done = 0;
c04b116a
JW		 5761
5762 while (budget) {
ed13615d 5763 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
c04b116a
JW		 5764 &card->rx.e_offset)) {
5765 *done = true;
5766 break;
5767 }
5768
5769 work_done++;
5770 budget--;
4a71df50 5771 }
c04b116a
JW		 5772
5773 return work_done;
4a71df50 5774}
4a71df50 5775
781b9a18 5776static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
d73ef324 5777{
7c94a882 5778 struct qeth_rx *ctx = &card->rx;
781b9a18 5779 unsigned int work_done = 0;
d73ef324 5780
781b9a18 5781 while (budget > 0) {
b439044b
JW		 5782 struct qeth_qdio_buffer *buffer;
5783 unsigned int skbs_done = 0;
5784 bool done = false;
5785
781b9a18 5786 /* Fetch completed RX buffers: */
d73ef324
JW		 5787 if (!card->rx.b_count) {
5788 card->rx.qdio_err = 0;
b44995e5
JW		 5789 card->rx.b_count =
5790 qdio_inspect_input_queue(CARD_DDEV(card), 0,
5791 &card->rx.b_index,
5792 &card->rx.qdio_err);
d73ef324
JW		 5793 if (card->rx.b_count <= 0) {
5794 card->rx.b_count = 0;
5795 break;
5796 }
d73ef324
JW		 5797 }
5798
781b9a18 5799 /* Process one completed RX buffer: */
b439044b
JW		 5800 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5801 if (!(card->rx.qdio_err &&
5802 qeth_check_qdio_errors(card, buffer->buffer,
5803 card->rx.qdio_err, "qinerr")))
5804 skbs_done = qeth_extract_skbs(card, budget, buffer,
5805 &done);
5806 else
5807 done = true;
5808
5809 work_done += skbs_done;
5810 budget -= skbs_done;
5811
5812 if (done) {
5813 QETH_CARD_STAT_INC(card, rx_bufs);
5814 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
eff73e16 5815 buffer->pool_entry = NULL;
b439044b 5816 card->rx.b_count--;
7c94a882
JW		 5817 ctx->bufs_refill++;
5818 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5819 ctx->bufs_refill);
b439044b
JW		 5820
5821 /* Step forward to next buffer: */
5822 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5823 card->rx.buf_element = 0;
5824 card->rx.e_offset = 0;
d73ef324
JW		 5825 }
5826 }
5827
781b9a18
JW		 5828 return work_done;
5829}
5830
0a6e6345
JW		 5831static void qeth_cq_poll(struct qeth_card *card)
5832{
5833 unsigned int work_done = 0;
5834
5835 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5836 unsigned int start, error;
5837 int completed;
5838
b44995e5
JW		 5839 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
5840 &error);
0a6e6345
JW		 5841 if (completed <= 0)
5842 return;
5843
5844 qeth_qdio_cq_handler(card, error, 1, start, completed);
5845 work_done += completed;
5846 }
5847}
5848
781b9a18
JW		 5849int qeth_poll(struct napi_struct *napi, int budget)
5850{
5851 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5852 unsigned int work_done;
5853
5854 work_done = qeth_rx_poll(card, budget);
5855
7a4b92e8
JW		 5856 if (qeth_use_tx_irqs(card)) {
5857 struct qeth_qdio_out_q *queue;
5858 unsigned int i;
5859
5860 qeth_for_each_output_queue(card, queue, i) {
5861 if (!qeth_out_queue_is_empty(queue))
5862 napi_schedule(&queue->napi);
5863 }
5864 }
5865
0a6e6345
JW		 5866 if (card->options.cq == QETH_CQ_ENABLED)
5867 qeth_cq_poll(card);
5868
7c94a882
JW		 5869 if (budget) {
5870 struct qeth_rx *ctx = &card->rx;
5871
5872 /* Process any substantial refill backlog: */
5873 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5874
5875 /* Exhausted the RX budget. Keep IRQ disabled, we get called again. */
5876 if (work_done >= budget)
5877 return work_done;
5878 }
781b9a18 5879
f9ce416a 5880 if (napi_complete_done(napi, work_done) &&
0a6e6345 5881 qdio_start_irq(CARD_DDEV(card)))
f9ce416a 5882 napi_schedule(napi);
781b9a18 5883
d73ef324
JW		 5884 return work_done;
5885}
5886EXPORT_SYMBOL_GPL(qeth_poll);
5887
e53edf74 5888static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
7940eaf2
JW		 5889 unsigned int bidx, unsigned int qdio_error,
5890 int budget)
e53edf74
JW		 5891{
5892 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5893 u8 sflags = buffer->buffer->element[15].sflags;
5894 struct qeth_card *card = queue->card;
7940eaf2 5895 bool error = !!qdio_error;
e53edf74 5896
2223318c 5897 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
396c1004 5898 struct qaob *aob = buffer->aob;
838e4cc8 5899 struct qeth_qaob_priv1 *priv;
f875d880 5900 enum iucv_tx_notify notify;
396c1004
JW		 5901
5902 if (!aob) {
5903 netdev_WARN_ONCE(card->dev,
5904 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5905 bidx, queue->queue_no);
5906 qeth_schedule_recovery(card);
5907 return;
5908 }
e53edf74 5909
db4ffdce
JW		 5910 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5911
838e4cc8
JW		 5912 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5913 /* QAOB hasn't completed yet: */
5914 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
e53edf74
JW		 5915 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5916
838e4cc8
JW		 5917 /* Prepare the queue slot for immediate re-use: */
5918 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5919 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5920 QETH_CARD_TEXT(card, 2, "outofbuf");
5921 qeth_schedule_recovery(card);
8908f36d 5922 }
e53edf74 5923
838e4cc8
JW		 5924 list_add(&buffer->list_entry, &queue->pending_bufs);
5925 /* Skip clearing the buffer: */
5926 return;
e53edf74 5927 }
396c1004 5928
838e4cc8
JW		 5929 /* QAOB already completed: */
5930 notify = qeth_compute_cq_notification(aob->aorc, 0);
5931 qeth_notify_skbs(queue, buffer, notify);
5932 error = !!aob->aorc;
396c1004 5933 memset(aob, 0, sizeof(*aob));
db4ffdce 5934 } else if (card->options.cq == QETH_CQ_ENABLED) {
e53edf74
JW		 5935 qeth_notify_skbs(queue, buffer,
5936 qeth_compute_cq_notification(sflags, 0));
db4ffdce
JW		 5937 }
5938
85e537d8 5939 qeth_clear_output_buffer(queue, buffer, error, budget);
e53edf74
JW		 5940}
5941
5942static int qeth_tx_poll(struct napi_struct *napi, int budget)
5943{
5944 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5945 unsigned int queue_no = queue->queue_no;
5946 struct qeth_card *card = queue->card;
5947 struct net_device *dev = card->dev;
5948 unsigned int work_done = 0;
5949 struct netdev_queue *txq;
5950
7a4b92e8
JW		 5951 if (IS_IQD(card))
5952 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5953 else
5954 txq = netdev_get_tx_queue(dev, queue_no);
e53edf74
JW		 5955
5956 while (1) {
5957 unsigned int start, error, i;
96bd6c94
JW		 5958 unsigned int packets = 0;
5959 unsigned int bytes = 0;
e53edf74
JW		 5960 int completed;
5961
ad4bbd72 5962 qeth_tx_complete_pending_bufs(card, queue, false, budget);
c20383ad 5963
e53edf74
JW		 5964 if (qeth_out_queue_is_empty(queue)) {
5965 napi_complete(napi);
5966 return 0;
5967 }
5968
5969 /* Give the CPU a breather: */
5970 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5971 QETH_TXQ_STAT_INC(queue, completion_yield);
5972 if (napi_complete_done(napi, 0))
5973 napi_schedule(napi);
5974 return 0;
5975 }
5976
b44995e5
JW		 5977 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
5978 &start, &error);
e53edf74
JW		 5979 if (completed <= 0) {
5980 /* Ensure we see TX completion for pending work: */
7a4b92e8
JW		 5981 if (napi_complete_done(napi, 0) &&
5982 !atomic_read(&queue->set_pci_flags_count))
5983 qeth_tx_arm_timer(queue, queue->rescan_usecs);
e53edf74
JW		 5984 return 0;
5985 }
5986
5987 for (i = start; i < start + completed; i++) {
96bd6c94 5988 struct qeth_qdio_out_buffer *buffer;
e53edf74
JW		 5989 unsigned int bidx = QDIO_BUFNR(i);
5990
96bd6c94 5991 buffer = queue->bufs[bidx];
1ab2f8c6 5992 packets += buffer->frames;
96bd6c94
JW		 5993 bytes += buffer->bytes;
5994
5995 qeth_handle_send_error(card, buffer, error);
7a4b92e8
JW		 5996 if (IS_IQD(card))
5997 qeth_iqd_tx_complete(queue, bidx, error, budget);
5998 else
5999 qeth_clear_output_buffer(queue, buffer, error,
6000 budget);
e53edf74
JW		 6001 }
6002
6003 atomic_sub(completed, &queue->used_buffers);
6004 work_done += completed;
7a4b92e8
JW		 6005 if (IS_IQD(card))
6006 netdev_tx_completed_queue(txq, packets, bytes);
6007 else
6008 qeth_check_outbound_queue(queue);
e53edf74
JW		 6009
6010 /* xmit may have observed the full-condition, but not yet
6011 * stopped the txq. In which case the code below won't trigger.
6012 * So before returning, xmit will re-check the txq's fill level
6013 * and wake it up if needed.
6014 */
6015 if (netif_tx_queue_stopped(txq) &&
6016 !qeth_out_queue_is_full(queue))
6017 netif_tx_wake_queue(txq);
6018 }
6019}
6020
ad3cbf61
JW		 6021static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6022{
6023 if (!cmd->hdr.return_code)
6024 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6025 return cmd->hdr.return_code;
6026}
6027
4666d7fb
JW		 6028static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6029 struct qeth_reply *reply,
6030 unsigned long data)
6031{
6032 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6033 struct qeth_ipa_caps *caps = reply->param;
6034
6035 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6036 return -EIO;
4666d7fb
JW		 6037
6038 caps->supported = cmd->data.setassparms.data.caps.supported;
6039 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6040 return 0;
6041}
6042
8f43fb00
TR		 6043int qeth_setassparms_cb(struct qeth_card *card,
6044 struct qeth_reply *reply, unsigned long data)
4d7def2a 6045{
742d4d40 6046 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4d7def2a
TR		 6047
6048 QETH_CARD_TEXT(card, 4, "defadpcb");
6049
742d4d40
JW		 6050 if (cmd->hdr.return_code)
6051 return -EIO;
6052
6053 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6054 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
52f82bf1 6055 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
742d4d40 6056 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
52f82bf1 6057 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
4d7def2a
TR		 6058 return 0;
6059}
8f43fb00 6060EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
4d7def2a 6061
b475e316
TR		 6062struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6063 enum qeth_ipa_funcs ipa_func,
b9150461
JW		 6064 u16 cmd_code,
6065 unsigned int data_length,
b475e316 6066 enum qeth_prot_versions prot)
4d7def2a 6067{
b9150461
JW		 6068 struct qeth_ipacmd_setassparms *setassparms;
6069 struct qeth_ipacmd_setassparms_hdr *hdr;
4d7def2a 6070 struct qeth_cmd_buffer *iob;
4d7def2a
TR		 6071
6072 QETH_CARD_TEXT(card, 4, "getasscm");
b9150461
JW		 6073 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6074 data_length +
6075 offsetof(struct qeth_ipacmd_setassparms,
6076 data));
6077 if (!iob)
6078 return NULL;
4d7def2a 6079
b9150461
JW		 6080 setassparms = &__ipa_cmd(iob)->data.setassparms;
6081 setassparms->assist_no = ipa_func;
4d7def2a 6082
b9150461
JW		 6083 hdr = &setassparms->hdr;
6084 hdr->length = sizeof(*hdr) + data_length;
6085 hdr->command_code = cmd_code;
4d7def2a
TR		 6086 return iob;
6087}
b475e316 6088EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
4d7def2a 6089
a8155b00
KM		 6090int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6091 enum qeth_ipa_funcs ipa_func,
1c696c89 6092 u16 cmd_code, u32 *data,
a8155b00 6093 enum qeth_prot_versions prot)
4d7def2a 6094{
1c696c89 6095 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
4d7def2a
TR		 6096 struct qeth_cmd_buffer *iob;
6097
a8155b00 6098 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
a8155b00 6099 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
4d7def2a
TR		 6100 if (!iob)
6101 return -ENOMEM;
4fa55fa9 6102
1c696c89
JW		 6103 if (data)
6104 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
4fa55fa9 6105 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
4d7def2a 6106}
a8155b00 6107EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
4d7def2a 6108
4a71df50
FB		 6109static void qeth_unregister_dbf_views(void)
6110{
d11ba0c4 6111 int x;
378ac80d 6112
d11ba0c4
PT		 6113 for (x = 0; x < QETH_DBF_INFOS; x++) {
6114 debug_unregister(qeth_dbf[x].id);
6115 qeth_dbf[x].id = NULL;
6116 }
4a71df50
FB		 6117}
6118
8e96c51c 6119void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
cd023216
PT		 6120{
6121 char dbf_txt_buf[32];
345aa66e 6122 va_list args;
cd023216 6123
8e6a8285 6124 if (!debug_level_enabled(id, level))
cd023216 6125 return;
345aa66e 6126 va_start(args, fmt);
74c05a38 6127 vscnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
345aa66e 6128 va_end(args);
8e96c51c 6129 debug_text_event(id, level, dbf_txt_buf);
cd023216
PT		 6130}
6131EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6132
4a71df50
FB		 6133static int qeth_register_dbf_views(void)
6134{
d11ba0c4
PT		 6135 int ret;
6136 int x;
6137
6138 for (x = 0; x < QETH_DBF_INFOS; x++) {
6139 /* register the areas */
6140 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6141 qeth_dbf[x].pages,
6142 qeth_dbf[x].areas,
6143 qeth_dbf[x].len);
6144 if (qeth_dbf[x].id == NULL) {
6145 qeth_unregister_dbf_views();
6146 return -ENOMEM;
6147 }
4a71df50 6148
d11ba0c4
PT		 6149 /* register a view */
6150 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6151 if (ret) {
6152 qeth_unregister_dbf_views();
6153 return ret;
6154 }
4a71df50 6155
d11ba0c4
PT		 6156 /* set a passing level */
6157 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6158 }
4a71df50
FB		 6159
6160 return 0;
6161}
6162
a70fee3b
JW		 6163static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
6164
ea12f1b3
JW		 6165int qeth_setup_discipline(struct qeth_card *card,
6166 enum qeth_discipline_id discipline)
4a71df50 6167{
ea12f1b3
JW		 6168 int rc;
6169
2022e00c 6170 mutex_lock(&qeth_mod_mutex);
4a71df50
FB		 6171 switch (discipline) {
6172 case QETH_DISCIPLINE_LAYER3:
c041f2d4
SO		 6173 card->discipline = try_then_request_module(
6174 symbol_get(qeth_l3_discipline), "qeth_l3");
4a71df50
FB		 6175 break;
6176 case QETH_DISCIPLINE_LAYER2:
c041f2d4
SO		 6177 card->discipline = try_then_request_module(
6178 symbol_get(qeth_l2_discipline), "qeth_l2");
4a71df50 6179 break;
c70eb09d
JW		 6180 default:
6181 break;
4a71df50 6182 }
a70fee3b 6183 mutex_unlock(&qeth_mod_mutex);
c70eb09d 6184
c041f2d4 6185 if (!card->discipline) {
74eacdb9
FB		 6186 dev_err(&card->gdev->dev, "There is no kernel module to "
6187 "support discipline %d\n", discipline);
a70fee3b 6188 return -EINVAL;
4a71df50 6189 }
a70fee3b 6190
ea12f1b3
JW		 6191 rc = card->discipline->setup(card->gdev);
6192 if (rc) {
6193 if (discipline == QETH_DISCIPLINE_LAYER2)
6194 symbol_put(qeth_l2_discipline);
6195 else
6196 symbol_put(qeth_l3_discipline);
6197 card->discipline = NULL;
6198
6199 return rc;
6200 }
6201
c1a935f6 6202 card->options.layer = discipline;
a70fee3b 6203 return 0;
4a71df50
FB		 6204}
6205
ea12f1b3 6206void qeth_remove_discipline(struct qeth_card *card)
4a71df50 6207{
ea12f1b3
JW		 6208 card->discipline->remove(card->gdev);
6209
4fda3354 6210 if (IS_LAYER2(card))
c041f2d4 6211 symbol_put(qeth_l2_discipline);
4a71df50 6212 else
c041f2d4 6213 symbol_put(qeth_l3_discipline);
c1a935f6 6214 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
c041f2d4 6215 card->discipline = NULL;
4a71df50
FB		 6216}
6217
ae57ea7a 6218static const struct device_type qeth_generic_devtype = {
b7169c51 6219 .name = "qeth_generic",
b7169c51 6220};
b7169c51 6221
819dc537
SR		 6222#define DBF_NAME_LEN 20
6223
6224struct qeth_dbf_entry {
6225 char dbf_name[DBF_NAME_LEN];
6226 debug_info_t *dbf_info;
6227 struct list_head dbf_list;
6228};
6229
6230static LIST_HEAD(qeth_dbf_list);
6231static DEFINE_MUTEX(qeth_dbf_list_mutex);
6232
6233static debug_info_t *qeth_get_dbf_entry(char *name)
6234{
6235 struct qeth_dbf_entry *entry;
6236 debug_info_t *rc = NULL;
6237
6238 mutex_lock(&qeth_dbf_list_mutex);
6239 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6240 if (strcmp(entry->dbf_name, name) == 0) {
6241 rc = entry->dbf_info;
6242 break;
6243 }
6244 }
6245 mutex_unlock(&qeth_dbf_list_mutex);
6246 return rc;
6247}
6248
6249static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6250{
6251 struct qeth_dbf_entry *new_entry;
6252
6253 card->debug = debug_register(name, 2, 1, 8);
6254 if (!card->debug) {
6255 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6256 goto err;
6257 }
6258 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6259 goto err_dbg;
6260 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6261 if (!new_entry)
6262 goto err_dbg;
e43e6d95 6263 strscpy(new_entry->dbf_name, name, sizeof(new_entry->dbf_name));
819dc537
SR		 6264 new_entry->dbf_info = card->debug;
6265 mutex_lock(&qeth_dbf_list_mutex);
6266 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6267 mutex_unlock(&qeth_dbf_list_mutex);
6268
6269 return 0;
6270
6271err_dbg:
6272 debug_unregister(card->debug);
6273err:
6274 return -ENOMEM;
6275}
6276
6277static void qeth_clear_dbf_list(void)
6278{
6279 struct qeth_dbf_entry *entry, *tmp;
6280
6281 mutex_lock(&qeth_dbf_list_mutex);
6282 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6283 list_del(&entry->dbf_list);
6284 debug_unregister(entry->dbf_info);
6285 kfree(entry);
6286 }
6287 mutex_unlock(&qeth_dbf_list_mutex);
6288}
6289
d3d1b205
JW		 6290static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6291{
6292 struct net_device *dev;
562cf773 6293 struct qeth_priv *priv;
d3d1b205
JW		 6294
6295 switch (card->info.type) {
6296 case QETH_CARD_TYPE_IQD:
562cf773 6297 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
d8564e19 6298 ether_setup, QETH_MAX_OUT_QUEUES, 1);
d3d1b205 6299 break;
73dc2daf 6300 case QETH_CARD_TYPE_OSM:
562cf773 6301 dev = alloc_etherdev(sizeof(*priv));
73dc2daf 6302 break;
d3d1b205 6303 default:
d8564e19 6304 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
d3d1b205
JW		 6305 }
6306
6307 if (!dev)
6308 return NULL;
6309
562cf773
JW		 6310 priv = netdev_priv(dev);
6311 priv->rx_copybreak = QETH_RX_COPYBREAK;
949bbf4d 6312 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
562cf773 6313
d3d1b205
JW		 6314 dev->ml_priv = card;
6315 dev->watchdog_timeo = QETH_TX_TIMEOUT;
a8c7629c 6316 dev->min_mtu = 576;
8ce7a9e0
JW		 6317 /* initialized when device first goes online: */
6318 dev->max_mtu = 0;
6319 dev->mtu = 0;
d3d1b205
JW		 6320 SET_NETDEV_DEV(dev, &card->gdev->dev);
6321 netif_carrier_off(dev);
5f89eca5 6322
a8c7629c
JW		 6323 dev->ethtool_ops = &qeth_ethtool_ops;
6324 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6325 dev->hw_features |= NETIF_F_SG;
6326 dev->vlan_features |= NETIF_F_SG;
6327 if (IS_IQD(card))
6328 dev->features |= NETIF_F_SG;
5f89eca5 6329
d3d1b205
JW		 6330 return dev;
6331}
6332
6333struct net_device *qeth_clone_netdev(struct net_device *orig)
6334{
6335 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6336
6337 if (!clone)
6338 return NULL;
6339
6340 clone->dev_port = orig->dev_port;
6341 return clone;
6342}
6343
4a71df50
FB		 6344static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6345{
6346 struct qeth_card *card;
6347 struct device *dev;
6348 int rc;
c70eb09d 6349 enum qeth_discipline_id enforced_disc;
819dc537 6350 char dbf_name[DBF_NAME_LEN];
4a71df50 6351
d11ba0c4 6352 QETH_DBF_TEXT(SETUP, 2, "probedev");
4a71df50
FB		 6353
6354 dev = &gdev->dev;
6355 if (!get_device(dev))
6356 return -ENODEV;
6357
2a0217d5 6358 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
4a71df50 6359
121ca39a 6360 card = qeth_alloc_card(gdev);
4a71df50 6361 if (!card) {
d11ba0c4 6362 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
4a71df50
FB		 6363 rc = -ENOMEM;
6364 goto err_dev;
6365 }
af039068 6366
74c05a38
TW		 6367 scnprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6368 dev_name(&gdev->dev));
819dc537 6369 card->debug = qeth_get_dbf_entry(dbf_name);
af039068 6370 if (!card->debug) {
819dc537
SR		 6371 rc = qeth_add_dbf_entry(card, dbf_name);
6372 if (rc)
6373 goto err_card;
af039068 6374 }
af039068 6375
95f4d8b7 6376 qeth_setup_card(card);
d3d1b205 6377 card->dev = qeth_alloc_netdev(card);
778b1ac7
JW		 6378 if (!card->dev) {
6379 rc = -ENOMEM;
d3d1b205 6380 goto err_card;
778b1ac7 6381 }
d3d1b205 6382
1c103cf8
JW		 6383 qeth_determine_capabilities(card);
6384 qeth_set_blkt_defaults(card);
6385
832585d2
JW		 6386 card->qdio.in_q = qeth_alloc_qdio_queue();
6387 if (!card->qdio.in_q) {
6388 rc = -ENOMEM;
6389 goto err_rx_queue;
6390 }
6391
73dc2daf
JW		 6392 card->qdio.no_out_queues = card->dev->num_tx_queues;
6393 rc = qeth_update_from_chp_desc(card);
6394 if (rc)
6395 goto err_chp_desc;
09ac887f 6396
a8c7629c 6397 gdev->dev.groups = qeth_dev_groups;
0b8da811 6398
c70eb09d
JW		 6399 enforced_disc = qeth_enforce_discipline(card);
6400 switch (enforced_disc) {
6401 case QETH_DISCIPLINE_UNDETERMINED:
6402 gdev->dev.type = &qeth_generic_devtype;
6403 break;
6404 default:
6405 card->info.layer_enforced = true;
b41b554c 6406 /* It's so early that we don't need the discipline_mutex yet. */
ea12f1b3 6407 rc = qeth_setup_discipline(card, enforced_disc);
5113fec0 6408 if (rc)
ea12f1b3 6409 goto err_setup_disc;
2d2ebb3e 6410
2d2ebb3e 6411 break;
4a71df50
FB		 6412 }
6413
4a71df50
FB		 6414 return 0;
6415
ea12f1b3 6416err_setup_disc:
a4cdc9ba 6417err_chp_desc:
832585d2
JW		 6418 qeth_free_qdio_queue(card->qdio.in_q);
6419err_rx_queue:
73dc2daf 6420 free_netdev(card->dev);
4a71df50
FB		 6421err_card:
6422 qeth_core_free_card(card);
6423err_dev:
6424 put_device(dev);
6425 return rc;
6426}
6427
6428static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6429{
4a71df50
FB		 6430 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6431
57a688aa 6432 QETH_CARD_TEXT(card, 2, "removedv");
4a71df50 6433
b41b554c 6434 mutex_lock(&card->discipline_mutex);
ea12f1b3
JW		 6435 if (card->discipline)
6436 qeth_remove_discipline(card);
b41b554c 6437 mutex_unlock(&card->discipline_mutex);
9dc48ccc 6438
8311c7a2
JW		 6439 qeth_free_qdio_queues(card);
6440
832585d2 6441 qeth_free_qdio_queue(card->qdio.in_q);
d3d1b205 6442 free_netdev(card->dev);
4a71df50 6443 qeth_core_free_card(card);
4a71df50 6444 put_device(&gdev->dev);
4a71df50
FB		 6445}
6446
6447static int qeth_core_set_online(struct ccwgroup_device *gdev)
6448{
6449 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6450 int rc = 0;
c70eb09d 6451 enum qeth_discipline_id def_discipline;
4a71df50 6452
b41b554c 6453 mutex_lock(&card->discipline_mutex);
c041f2d4 6454 if (!card->discipline) {
379ac99e
JW		 6455 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6456 QETH_DISCIPLINE_LAYER2;
ea12f1b3 6457 rc = qeth_setup_discipline(card, def_discipline);
4a71df50
FB		 6458 if (rc)
6459 goto err;
4a71df50 6460 }
91003f35 6461
0b9902c1 6462 rc = qeth_set_online(card, card->discipline);
0b9902c1 6463
4a71df50 6464err:
b41b554c 6465 mutex_unlock(&card->discipline_mutex);
4a71df50
FB		 6466 return rc;
6467}
6468
6469static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6470{
6471 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
0b9902c1 6472 int rc;
91003f35 6473
0b9902c1
JW		 6474 mutex_lock(&card->discipline_mutex);
6475 rc = qeth_set_offline(card, card->discipline, false);
6476 mutex_unlock(&card->discipline_mutex);
6477
6478 return rc;
4a71df50
FB		 6479}
6480
6481static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6482{
6483 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
378ac80d 6484
96d1bb53
JW		 6485 qeth_set_allowed_threads(card, 0, 1);
6486 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6487 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6488 qeth_qdio_clear_card(card, 0);
41c47da3 6489 qeth_drain_output_queues(card);
96d1bb53 6490 qdio_free(CARD_DDEV(card));
4a71df50
FB		 6491}
6492
36369569
GKH		 6493static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6494 size_t count)
4a71df50
FB		 6495{
6496 int err;
4a71df50 6497
6d8769ab
JW		 6498 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6499 buf);
b7169c51
SO		 6500
6501 return err ? err : count;
6502}
36369569 6503static DRIVER_ATTR_WO(group);
4a71df50 6504
f47e2256
SO		 6505static struct attribute *qeth_drv_attrs[] = {
6506 &driver_attr_group.attr,
6507 NULL,
6508};
6509static struct attribute_group qeth_drv_attr_group = {
6510 .attrs = qeth_drv_attrs,
6511};
6512static const struct attribute_group *qeth_drv_attr_groups[] = {
6513 &qeth_drv_attr_group,
6514 NULL,
6515};
6516
6d8769ab
JW		 6517static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6518 .driver = {
6519 .groups = qeth_drv_attr_groups,
6520 .owner = THIS_MODULE,
6521 .name = "qeth",
6522 },
6523 .ccw_driver = &qeth_ccw_driver,
6524 .setup = qeth_core_probe_device,
6525 .remove = qeth_core_remove_device,
6526 .set_online = qeth_core_set_online,
6527 .set_offline = qeth_core_set_offline,
6528 .shutdown = qeth_core_shutdown,
6d8769ab
JW		 6529};
6530
18787eee 6531int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
942d6984
JW		 6532{
6533 struct qeth_card *card = dev->ml_priv;
942d6984
JW		 6534 int rc = 0;
6535
942d6984
JW		 6536 switch (cmd) {
6537 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
18787eee 6538 rc = qeth_snmp_command(card, data);
942d6984
JW		 6539 break;
6540 case SIOC_QETH_GET_CARD_TYPE:
379ac99e
JW		 6541 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6542 !IS_VM_NIC(card))
942d6984 6543 return 1;
379ac99e 6544 return 0;
18787eee
AB		 6545 case SIOC_QETH_QUERY_OAT:
6546 rc = qeth_query_oat_command(card, data);
6547 break;
6548 default:
2decb0b7 6549 rc = -EOPNOTSUPP;
18787eee
AB		 6550 }
6551 if (rc)
6552 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6553 return rc;
6554}
6555EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6556
6557int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6558{
6559 struct qeth_card *card = dev->ml_priv;
6560 struct mii_ioctl_data *mii_data;
6561 int rc = 0;
6562
6563 switch (cmd) {
942d6984
JW		 6564 case SIOCGMIIPHY:
6565 mii_data = if_mii(rq);
6566 mii_data->phy_id = 0;
6567 break;
6568 case SIOCGMIIREG:
6569 mii_data = if_mii(rq);
6570 if (mii_data->phy_id != 0)
6571 rc = -EINVAL;
6572 else
6573 mii_data->val_out = qeth_mdio_read(dev,
6574 mii_data->phy_id, mii_data->reg_num);
6575 break;
942d6984 6576 default:
18787eee 6577 return -EOPNOTSUPP;
942d6984
JW		 6578 }
6579 if (rc)
6580 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6581 return rc;
6582}
6583EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6584
4386e34f
JW		 6585static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6586 unsigned long data)
c9475369
TR		 6587{
6588 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4386e34f 6589 u32 *features = reply->param;
c9475369 6590
ad3cbf61 6591 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6592 return -EIO;
c9475369 6593
4386e34f 6594 *features = cmd->data.setassparms.data.flags_32bit;
c9475369
TR		 6595 return 0;
6596}
6597
4386e34f
JW		 6598static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6599 enum qeth_prot_versions prot)
c9475369 6600{
1c696c89
JW		 6601 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6602 NULL, prot);
c9475369
TR		 6603}
6604
4386e34f 6605static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
3be83016 6606 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6607{
571f9dd8 6608 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
4386e34f
JW		 6609 struct qeth_cmd_buffer *iob;
6610 struct qeth_ipa_caps caps;
6611 u32 features;
4d7def2a
TR		 6612 int rc;
6613
7e83747d
JW		 6614 /* some L3 HW requires combined L3+L4 csum offload: */
6615 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6616 cstype == IPA_OUTBOUND_CHECKSUM)
571f9dd8 6617 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
7e83747d 6618
4386e34f
JW		 6619 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6620 prot);
6621 if (!iob)
6622 return -ENOMEM;
6623
6624 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6625 if (rc)
4d7def2a 6626 return rc;
7e83747d 6627
4386e34f
JW		 6628 if ((required_features & features) != required_features) {
6629 qeth_set_csum_off(card, cstype, prot);
6630 return -EOPNOTSUPP;
6631 }
7e83747d 6632
b9150461
JW		 6633 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6634 SETASS_DATA_SIZEOF(flags_32bit),
a8155b00 6635 prot);
4386e34f
JW		 6636 if (!iob) {
6637 qeth_set_csum_off(card, cstype, prot);
6638 return -ENOMEM;
f9d8e6dc 6639 }
4386e34f
JW		 6640
6641 if (features & QETH_IPA_CHECKSUM_LP2LP)
6642 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6643 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6644 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4d7def2a 6645 if (rc) {
4386e34f 6646 qeth_set_csum_off(card, cstype, prot);
4d7def2a
TR		 6647 return rc;
6648 }
8f43fb00 6649
4386e34f
JW		 6650 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6651 !qeth_ipa_caps_enabled(&caps, required_features)) {
6652 qeth_set_csum_off(card, cstype, prot);
6653 return -EOPNOTSUPP;
6654 }
6655
a8155b00
KM		 6656 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6657 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
3be83016
JW		 6658
6659 if (lp2lp)
6660 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6661
4d7def2a
TR		 6662 return 0;
6663}
6664
a8155b00 6665static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
3be83016 6666 enum qeth_prot_versions prot, u8 *lp2lp)
4d7def2a 6667{
3be83016 6668 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
742d4d40 6669 qeth_set_csum_off(card, cstype, prot);
4d7def2a 6670}
4d7def2a 6671
4666d7fb
JW		 6672static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6673 unsigned long data)
6674{
6675 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6676 struct qeth_tso_start_data *tso_data = reply->param;
6677
6678 if (qeth_setassparms_inspect_rc(cmd))
742d4d40 6679 return -EIO;
4666d7fb
JW		 6680
6681 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6682 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6683 return 0;
6684}
6685
1f83b817
JW		 6686static int qeth_set_tso_off(struct qeth_card *card,
6687 enum qeth_prot_versions prot)
4d7def2a 6688{
1f83b817 6689 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
1c696c89 6690 IPA_CMD_ASS_STOP, NULL, prot);
1f83b817 6691}
4d7def2a 6692
1f83b817
JW		 6693static int qeth_set_tso_on(struct qeth_card *card,
6694 enum qeth_prot_versions prot)
6695{
4666d7fb
JW		 6696 struct qeth_tso_start_data tso_data;
6697 struct qeth_cmd_buffer *iob;
6698 struct qeth_ipa_caps caps;
6699 int rc;
6700
6701 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6702 IPA_CMD_ASS_START, 0, prot);
6703 if (!iob)
6704 return -ENOMEM;
6705
4fa55fa9 6706 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
4666d7fb
JW		 6707 if (rc)
6708 return rc;
6709
6710 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6711 qeth_set_tso_off(card, prot);
6712 return -EOPNOTSUPP;
6713 }
6714
6715 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
b9150461
JW		 6716 IPA_CMD_ASS_ENABLE,
6717 SETASS_DATA_SIZEOF(caps), prot);
4666d7fb
JW		 6718 if (!iob) {
6719 qeth_set_tso_off(card, prot);
6720 return -ENOMEM;
6721 }
6722
6723 /* enable TSO capability */
4fa55fa9
JW		 6724 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6725 QETH_IPA_LARGE_SEND_TCP;
6726 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
4666d7fb
JW		 6727 if (rc) {
6728 qeth_set_tso_off(card, prot);
6729 return rc;
6730 }
6731
6732 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6733 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6734 qeth_set_tso_off(card, prot);
6735 return -EOPNOTSUPP;
6736 }
6737
6738 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6739 tso_data.mss);
6740 return 0;
1f83b817 6741}
4d7def2a 6742
1f83b817
JW		 6743static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6744 enum qeth_prot_versions prot)
6745{
742d4d40 6746 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
4d7def2a 6747}
8f43fb00 6748
d7e6ed97
KM		 6749static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6750{
6751 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6752 int rc_ipv6;
6753
6754 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6755 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6756 QETH_PROT_IPV4, NULL);
d7e6ed97
KM		 6757 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6758 /* no/one Offload Assist available, so the rc is trivial */
6759 return rc_ipv4;
ce344356 6760
d7e6ed97 6761 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
3be83016 6762 QETH_PROT_IPV6, NULL);
d7e6ed97
KM		 6763
6764 if (on)
6765 /* enable: success if any Assist is active */
6766 return (rc_ipv6) ? rc_ipv4 : 0;
6767
6768 /* disable: failure if any Assist is still active */
6769 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6770}
6771
ce344356 6772/**
d025da9e
JW		 6773 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6774 * @dev: a net_device
ce344356 6775 */
d025da9e 6776void qeth_enable_hw_features(struct net_device *dev)
e830baa9
HW		 6777{
6778 struct qeth_card *card = dev->ml_priv;
d025da9e 6779 netdev_features_t features;
e830baa9 6780
d025da9e 6781 features = dev->features;
5fc692a7 6782 /* force-off any feature that might need an IPA sequence.
ce344356
JW		 6783 * netdev_update_features() will restart them.
6784 */
5fc692a7
JW		 6785 dev->features &= ~dev->hw_features;
6786 /* toggle VLAN filter, so that VIDs are re-programmed: */
6787 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6788 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6789 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6790 }
ce344356 6791 netdev_update_features(dev);
d025da9e
JW		 6792 if (features != dev->features)
6793 dev_warn(&card->gdev->dev,
6794 "Device recovery failed to restore all offload features\n");
e830baa9 6795}
d025da9e 6796EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
e830baa9 6797
0d49c06b
JW		 6798static void qeth_check_restricted_features(struct qeth_card *card,
6799 netdev_features_t changed,
6800 netdev_features_t actual)
6801{
6802 netdev_features_t ipv6_features = NETIF_F_TSO6;
6803 netdev_features_t ipv4_features = NETIF_F_TSO;
6804
6805 if (!card->info.has_lp2lp_cso_v6)
6806 ipv6_features |= NETIF_F_IPV6_CSUM;
6807 if (!card->info.has_lp2lp_cso_v4)
6808 ipv4_features |= NETIF_F_IP_CSUM;
6809
6810 if ((changed & ipv6_features) && !(actual & ipv6_features))
6811 qeth_flush_local_addrs6(card);
6812 if ((changed & ipv4_features) && !(actual & ipv4_features))
6813 qeth_flush_local_addrs4(card);
6814}
6815
8f43fb00
TR		 6816int qeth_set_features(struct net_device *dev, netdev_features_t features)
6817{
6818 struct qeth_card *card = dev->ml_priv;
6c7cd712 6819 netdev_features_t changed = dev->features ^ features;
8f43fb00
TR		 6820 int rc = 0;
6821
57a688aa
JW		 6822 QETH_CARD_TEXT(card, 2, "setfeat");
6823 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00 6824
6c7cd712 6825 if ((changed & NETIF_F_IP_CSUM)) {
a8155b00 6826 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
3be83016
JW		 6827 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6828 &card->info.has_lp2lp_cso_v4);
6c7cd712
HW		 6829 if (rc)
6830 changed ^= NETIF_F_IP_CSUM;
6831 }
571f9dd8
KM		 6832 if (changed & NETIF_F_IPV6_CSUM) {
6833 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
3be83016
JW		 6834 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6835 &card->info.has_lp2lp_cso_v6);
571f9dd8
KM		 6836 if (rc)
6837 changed ^= NETIF_F_IPV6_CSUM;
6838 }
d7e6ed97
KM		 6839 if (changed & NETIF_F_RXCSUM) {
6840 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6c7cd712
HW		 6841 if (rc)
6842 changed ^= NETIF_F_RXCSUM;
6843 }
1f83b817
JW		 6844 if (changed & NETIF_F_TSO) {
6845 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6846 QETH_PROT_IPV4);
6c7cd712
HW		 6847 if (rc)
6848 changed ^= NETIF_F_TSO;
6849 }
82bf5c08
JW		 6850 if (changed & NETIF_F_TSO6) {
6851 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6852 QETH_PROT_IPV6);
6853 if (rc)
6854 changed ^= NETIF_F_TSO6;
6855 }
6c7cd712 6856
0d49c06b
JW		 6857 qeth_check_restricted_features(card, dev->features ^ features,
6858 dev->features ^ changed);
6859
6c7cd712
HW		 6860 /* everything changed successfully? */
6861 if ((dev->features ^ features) == changed)
6862 return 0;
6863 /* something went wrong. save changed features and return error */
6864 dev->features ^= changed;
6865 return -EIO;
8f43fb00
TR		 6866}
6867EXPORT_SYMBOL_GPL(qeth_set_features);
6868
6869netdev_features_t qeth_fix_features(struct net_device *dev,
6870 netdev_features_t features)
6871{
6872 struct qeth_card *card = dev->ml_priv;
6873
57a688aa 6874 QETH_CARD_TEXT(card, 2, "fixfeat");
8f43fb00
TR		 6875 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6876 features &= ~NETIF_F_IP_CSUM;
571f9dd8
KM		 6877 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6878 features &= ~NETIF_F_IPV6_CSUM;
d7e6ed97
KM		 6879 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6880 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
8f43fb00 6881 features &= ~NETIF_F_RXCSUM;
cf536ffe 6882 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
8f43fb00 6883 features &= ~NETIF_F_TSO;
82bf5c08
JW		 6884 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6885 features &= ~NETIF_F_TSO6;
e6e771b3 6886
57a688aa 6887 QETH_CARD_HEX(card, 2, &features, sizeof(features));
8f43fb00
TR		 6888 return features;
6889}
6890EXPORT_SYMBOL_GPL(qeth_fix_features);
4d7def2a 6891
6d69b1f1
JW		 6892netdev_features_t qeth_features_check(struct sk_buff *skb,
6893 struct net_device *dev,
6894 netdev_features_t features)
6895{
8cebedb6
JW		 6896 struct qeth_card *card = dev->ml_priv;
6897
c619e9a6 6898 /* Traffic with local next-hop is not eligible for some offloads: */
8cebedb6 6899 if (skb->ip_summed == CHECKSUM_PARTIAL &&
65878fd9 6900 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
c619e9a6
JW		 6901 netdev_features_t restricted = 0;
6902
6903 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6904 restricted |= NETIF_F_ALL_TSO;
6905
6906 switch (vlan_get_protocol(skb)) {
6907 case htons(ETH_P_IP):
6908 if (!card->info.has_lp2lp_cso_v4)
6909 restricted |= NETIF_F_IP_CSUM;
6910
6911 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6912 features &= ~restricted;
6913 break;
6914 case htons(ETH_P_IPV6):
6915 if (!card->info.has_lp2lp_cso_v6)
6916 restricted |= NETIF_F_IPV6_CSUM;
6917
6918 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6919 features &= ~restricted;
6920 break;
6921 default:
6922 break;
6923 }
6924 }
6925
6d69b1f1
JW		 6926 /* GSO segmentation builds skbs with
6927 * a (small) linear part for the headers, and
6928 * page frags for the data.
6929 * Compared to a linear skb, the header-only part consumes an
6930 * additional buffer element. This reduces buffer utilization, and
6931 * hurts throughput. So compress small segments into one element.
6932 */
6933 if (netif_needs_gso(skb, features)) {
6934 /* match skb_segment(): */
6935 unsigned int doffset = skb->data - skb_mac_header(skb);
6936 unsigned int hsize = skb_shinfo(skb)->gso_size;
6937 unsigned int hroom = skb_headroom(skb);
6938
6939 /* linearize only if resulting skb allocations are order-0: */
6940 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6941 features &= ~NETIF_F_SG;
6942 }
6943
6944 return vlan_features_check(skb, features);
6945}
6946EXPORT_SYMBOL_GPL(qeth_features_check);
6947
b0abc4f5
JW		 6948void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6949{
6950 struct qeth_card *card = dev->ml_priv;
6951 struct qeth_qdio_out_q *queue;
6952 unsigned int i;
6953
6954 QETH_CARD_TEXT(card, 5, "getstat");
6955
6956 stats->rx_packets = card->stats.rx_packets;
6957 stats->rx_bytes = card->stats.rx_bytes;
845ef904 6958 stats->rx_errors = card->stats.rx_length_errors +
5fd3fcbb 6959 card->stats.rx_frame_errors +
845ef904
JW		 6960 card->stats.rx_fifo_errors;
6961 stats->rx_dropped = card->stats.rx_dropped_nomem +
5b55633f
JW		 6962 card->stats.rx_dropped_notsupp +
6963 card->stats.rx_dropped_runt;
b0abc4f5 6964 stats->multicast = card->stats.rx_multicast;
845ef904 6965 stats->rx_length_errors = card->stats.rx_length_errors;
5fd3fcbb 6966 stats->rx_frame_errors = card->stats.rx_frame_errors;
845ef904 6967 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
b0abc4f5
JW		 6968
6969 for (i = 0; i < card->qdio.no_out_queues; i++) {
6970 queue = card->qdio.out_qs[i];
6971
6972 stats->tx_packets += queue->stats.tx_packets;
6973 stats->tx_bytes += queue->stats.tx_bytes;
6974 stats->tx_errors += queue->stats.tx_errors;
6975 stats->tx_dropped += queue->stats.tx_dropped;
b0abc4f5
JW		 6976 }
6977}
6978EXPORT_SYMBOL_GPL(qeth_get_stats64);
6979
5d8ce41c
JW		 6980#define TC_IQD_UCAST 0
6981static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
6982 unsigned int ucast_txqs)
6983{
6984 unsigned int prio;
6985
6986 /* IQD requires mcast traffic to be placed on a dedicated queue, and
6987 * qeth_iqd_select_queue() deals with this.
6988 * For unicast traffic, we defer the queue selection to the stack.
6989 * By installing a trivial prio map that spans over only the unicast
6990 * queues, we can encourage the stack to spread the ucast traffic evenly
6991 * without selecting the mcast queue.
6992 */
6993
6994 /* One traffic class, spanning over all active ucast queues: */
6995 netdev_set_num_tc(dev, 1);
6996 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
6997 QETH_IQD_MIN_UCAST_TXQ);
6998
6999 /* Map all priorities to this traffic class: */
7000 for (prio = 0; prio <= TC_BITMASK; prio++)
7001 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7002}
7003
7004int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7005{
7006 struct net_device *dev = card->dev;
7007 int rc;
7008
7009 /* Per netif_setup_tc(), adjust the mapping first: */
7010 if (IS_IQD(card))
7011 qeth_iqd_set_prio_tc_map(dev, count - 1);
7012
7013 rc = netif_set_real_num_tx_queues(dev, count);
7014
7015 if (rc && IS_IQD(card))
7016 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7017
7018 return rc;
7019}
bb5ab541 7020EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
5d8ce41c 7021
3a18d754
JW		 7022u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7023 u8 cast_type, struct net_device *sb_dev)
7024{
66cddf10
JW		 7025 u16 txq;
7026
3a18d754
JW		 7027 if (cast_type != RTN_UNICAST)
7028 return QETH_IQD_MCAST_TXQ;
5d8ce41c
JW		 7029 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7030 return QETH_IQD_MIN_UCAST_TXQ;
66cddf10
JW		 7031
7032 txq = netdev_pick_tx(dev, skb, sb_dev);
7033 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
3a18d754
JW		 7034}
7035EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7036
1b9e410f
JW		 7037u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
7038 struct net_device *sb_dev)
7039{
7040 struct qeth_card *card = dev->ml_priv;
7041
7042 if (qeth_uses_tx_prio_queueing(card))
7043 return qeth_get_priority_queue(card, skb);
7044
7045 return netdev_pick_tx(dev, skb, sb_dev);
7046}
7047EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
7048
e6e771b3 7049int qeth_open(struct net_device *dev)
e22355ea
JW		 7050{
7051 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7052 struct qeth_qdio_out_q *queue;
7053 unsigned int i;
e22355ea
JW		 7054
7055 QETH_CARD_TEXT(card, 4, "qethopen");
e22355ea 7056
e22355ea 7057 card->data.state = CH_STATE_UP;
3a18d754 7058 netif_tx_start_all_queues(dev);
e22355ea 7059
e22355ea 7060 local_bh_disable();
7a4b92e8 7061 qeth_for_each_output_queue(card, queue, i) {
16d083e2 7062 netif_napi_add_tx(dev, &queue->napi, qeth_tx_poll);
7a4b92e8
JW		 7063 napi_enable(&queue->napi);
7064 napi_schedule(&queue->napi);
e53edf74 7065 }
3e83d467
JW		 7066
7067 napi_enable(&card->napi);
7068 napi_schedule(&card->napi);
e22355ea
JW		 7069 /* kick-start the NAPI softirq: */
7070 local_bh_enable();
3e83d467 7071
e22355ea
JW		 7072 return 0;
7073}
e22355ea
JW		 7074EXPORT_SYMBOL_GPL(qeth_open);
7075
7076int qeth_stop(struct net_device *dev)
7077{
7078 struct qeth_card *card = dev->ml_priv;
7a4b92e8
JW		 7079 struct qeth_qdio_out_q *queue;
7080 unsigned int i;
e22355ea
JW		 7081
7082 QETH_CARD_TEXT(card, 4, "qethstop");
3e83d467
JW		 7083
7084 napi_disable(&card->napi);
7085 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7086 qdio_stop_irq(CARD_DDEV(card));
7087
7a4b92e8
JW		 7088 /* Quiesce the NAPI instances: */
7089 qeth_for_each_output_queue(card, queue, i)
7090 napi_disable(&queue->napi);
e53edf74 7091
7a4b92e8
JW		 7092 /* Stop .ndo_start_xmit, might still access queue->napi. */
7093 netif_tx_disable(dev);
e53edf74 7094
7a4b92e8
JW		 7095 qeth_for_each_output_queue(card, queue, i) {
7096 del_timer_sync(&queue->timer);
7097 /* Queues may get re-allocated, so remove the NAPIs. */
7098 netif_napi_del(&queue->napi);
e53edf74
JW		 7099 }
7100
e22355ea
JW		 7101 return 0;
7102}
7103EXPORT_SYMBOL_GPL(qeth_stop);
7104
4a71df50
FB		 7105static int __init qeth_core_init(void)
7106{
7107 int rc;
7108
74eacdb9 7109 pr_info("loading core functions\n");
4a71df50 7110
fb8d2580
JW		 7111 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7112
4a71df50
FB		 7113 rc = qeth_register_dbf_views();
7114 if (rc)
a936b1ef 7115 goto dbf_err;
035da16f 7116 qeth_core_root_dev = root_device_register("qeth");
9262c6c2 7117 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
4a71df50
FB		 7118 if (rc)
7119 goto register_err;
55494264
JW		 7120 qeth_core_header_cache =
7121 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7122 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7123 0, NULL);
683d718a
FB		 7124 if (!qeth_core_header_cache) {
7125 rc = -ENOMEM;
7126 goto slab_err;
7127 }
0da9581d
EL		 7128 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7129 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7130 if (!qeth_qdio_outbuf_cache) {
7131 rc = -ENOMEM;
7132 goto cqslab_err;
7133 }
a18c28f0
JW		 7134
7135 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7136 sizeof(struct qaob),
7137 sizeof(struct qaob),
7138 0, NULL);
7139 if (!qeth_qaob_cache) {
7140 rc = -ENOMEM;
7141 goto qaob_err;
7142 }
7143
afb6ac59
SO		 7144 rc = ccw_driver_register(&qeth_ccw_driver);
7145 if (rc)
7146 goto ccw_err;
afb6ac59
SO		 7147 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7148 if (rc)
7149 goto ccwgroup_err;
0da9581d 7150
683d718a 7151 return 0;
afb6ac59
SO		 7152
7153ccwgroup_err:
7154 ccw_driver_unregister(&qeth_ccw_driver);
7155ccw_err:
a18c28f0
JW		 7156 kmem_cache_destroy(qeth_qaob_cache);
7157qaob_err:
afb6ac59 7158 kmem_cache_destroy(qeth_qdio_outbuf_cache);
0da9581d
EL		 7159cqslab_err:
7160 kmem_cache_destroy(qeth_core_header_cache);
683d718a 7161slab_err:
035da16f 7162 root_device_unregister(qeth_core_root_dev);
4a71df50 7163register_err:
4a71df50 7164 qeth_unregister_dbf_views();
a936b1ef 7165dbf_err:
fb8d2580 7166 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7167 pr_err("Initializing the qeth device driver failed\n");
4a71df50
FB		 7168 return rc;
7169}
7170
7171static void __exit qeth_core_exit(void)
7172{
819dc537 7173 qeth_clear_dbf_list();
4a71df50
FB		 7174 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7175 ccw_driver_unregister(&qeth_ccw_driver);
a18c28f0 7176 kmem_cache_destroy(qeth_qaob_cache);
0da9581d 7177 kmem_cache_destroy(qeth_qdio_outbuf_cache);
683d718a 7178 kmem_cache_destroy(qeth_core_header_cache);
afb6ac59 7179 root_device_unregister(qeth_core_root_dev);
4a71df50 7180 qeth_unregister_dbf_views();
fb8d2580 7181 debugfs_remove_recursive(qeth_debugfs_root);
74eacdb9 7182 pr_info("core functions removed\n");
4a71df50
FB		 7183}
7184
7185module_init(qeth_core_init);
7186module_exit(qeth_core_exit);
7187MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7188MODULE_DESCRIPTION("qeth core functions");
7189MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)