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10#define KMSG_COMPONENT "qeth"
11#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13#include <linux/compat.h>
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>
19#include <linux/log2.h>
20#include <linux/io.h>
21#include <linux/ip.h>
22#include <linux/tcp.h>
23#include <linux/mii.h>
24#include <linux/mm.h>
25#include <linux/kthread.h>
26#include <linux/slab.h>
27#include <linux/if_vlan.h>
28#include <linux/netdevice.h>
29#include <linux/netdev_features.h>
30#include <linux/rcutree.h>
31#include <linux/skbuff.h>
32#include <linux/vmalloc.h>
33
34#include <net/iucv/af_iucv.h>
35#include <net/dsfield.h>
36#include <net/sock.h>
37
38#include <asm/ebcdic.h>
39#include <asm/chpid.h>
40#include <asm/sysinfo.h>
41#include <asm/diag.h>
42#include <asm/cio.h>
43#include <asm/ccwdev.h>
44#include <asm/cpcmd.h>
45
46#include "qeth_core.h"
47
48struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
49
50
51 [QETH_DBF_SETUP] = {"qeth_setup",
52 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
53 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
54 &debug_sprintf_view, NULL},
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);
59
60struct kmem_cache *qeth_core_header_cache;
61EXPORT_SYMBOL_GPL(qeth_core_header_cache);
62static struct kmem_cache *qeth_qdio_outbuf_cache;
63
64static struct device *qeth_core_root_dev;
65static struct dentry *qeth_debugfs_root;
66static struct lock_class_key qdio_out_skb_queue_key;
67
68static void qeth_issue_next_read_cb(struct qeth_card *card,
69 struct qeth_cmd_buffer *iob,
70 unsigned int data_length);
71static int qeth_qdio_establish(struct qeth_card *);
72static void qeth_free_qdio_queues(struct qeth_card *card);
73
74static void qeth_close_dev_handler(struct work_struct *work)
75{
76 struct qeth_card *card;
77
78 card = container_of(work, struct qeth_card, close_dev_work);
79 QETH_CARD_TEXT(card, 2, "cldevhdl");
80 ccwgroup_set_offline(card->gdev);
81}
82
83static const char *qeth_get_cardname(struct qeth_card *card)
84{
85 if (IS_VM_NIC(card)) {
86 switch (card->info.type) {
87 case QETH_CARD_TYPE_OSD:
88 return " Virtual NIC QDIO";
89 case QETH_CARD_TYPE_IQD:
90 return " Virtual NIC Hiper";
91 case QETH_CARD_TYPE_OSM:
92 return " Virtual NIC QDIO - OSM";
93 case QETH_CARD_TYPE_OSX:
94 return " Virtual NIC QDIO - OSX";
95 default:
96 return " unknown";
97 }
98 } else {
99 switch (card->info.type) {
100 case QETH_CARD_TYPE_OSD:
101 return " OSD Express";
102 case QETH_CARD_TYPE_IQD:
103 return " HiperSockets";
104 case QETH_CARD_TYPE_OSN:
105 return " OSN QDIO";
106 case QETH_CARD_TYPE_OSM:
107 return " OSM QDIO";
108 case QETH_CARD_TYPE_OSX:
109 return " OSX QDIO";
110 default:
111 return " unknown";
112 }
113 }
114 return " n/a";
115}
116
117
118const char *qeth_get_cardname_short(struct qeth_card *card)
119{
120 if (IS_VM_NIC(card)) {
121 switch (card->info.type) {
122 case QETH_CARD_TYPE_OSD:
123 return "Virt.NIC QDIO";
124 case QETH_CARD_TYPE_IQD:
125 return "Virt.NIC Hiper";
126 case QETH_CARD_TYPE_OSM:
127 return "Virt.NIC OSM";
128 case QETH_CARD_TYPE_OSX:
129 return "Virt.NIC OSX";
130 default:
131 return "unknown";
132 }
133 } else {
134 switch (card->info.type) {
135 case QETH_CARD_TYPE_OSD:
136 switch (card->info.link_type) {
137 case QETH_LINK_TYPE_FAST_ETH:
138 return "OSD_100";
139 case QETH_LINK_TYPE_HSTR:
140 return "HSTR";
141 case QETH_LINK_TYPE_GBIT_ETH:
142 return "OSD_1000";
143 case QETH_LINK_TYPE_10GBIT_ETH:
144 return "OSD_10GIG";
145 case QETH_LINK_TYPE_25GBIT_ETH:
146 return "OSD_25GIG";
147 case QETH_LINK_TYPE_LANE_ETH100:
148 return "OSD_FE_LANE";
149 case QETH_LINK_TYPE_LANE_TR:
150 return "OSD_TR_LANE";
151 case QETH_LINK_TYPE_LANE_ETH1000:
152 return "OSD_GbE_LANE";
153 case QETH_LINK_TYPE_LANE:
154 return "OSD_ATM_LANE";
155 default:
156 return "OSD_Express";
157 }
158 case QETH_CARD_TYPE_IQD:
159 return "HiperSockets";
160 case QETH_CARD_TYPE_OSN:
161 return "OSN";
162 case QETH_CARD_TYPE_OSM:
163 return "OSM_1000";
164 case QETH_CARD_TYPE_OSX:
165 return "OSX_10GIG";
166 default:
167 return "unknown";
168 }
169 }
170 return "n/a";
171}
172
173void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
174 int clear_start_mask)
175{
176 unsigned long flags;
177
178 spin_lock_irqsave(&card->thread_mask_lock, flags);
179 card->thread_allowed_mask = threads;
180 if (clear_start_mask)
181 card->thread_start_mask &= threads;
182 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
183 wake_up(&card->wait_q);
184}
185EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
186
187int qeth_threads_running(struct qeth_card *card, unsigned long threads)
188{
189 unsigned long flags;
190 int rc = 0;
191
192 spin_lock_irqsave(&card->thread_mask_lock, flags);
193 rc = (card->thread_running_mask & threads);
194 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
195 return rc;
196}
197EXPORT_SYMBOL_GPL(qeth_threads_running);
198
199static void qeth_clear_working_pool_list(struct qeth_card *card)
200{
201 struct qeth_buffer_pool_entry *pool_entry, *tmp;
202 struct qeth_qdio_q *queue = card->qdio.in_q;
203 unsigned int i;
204
205 QETH_CARD_TEXT(card, 5, "clwrklst");
206 list_for_each_entry_safe(pool_entry, tmp,
207 &card->qdio.in_buf_pool.entry_list, list)
208 list_del(&pool_entry->list);
209
210 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
211 queue->bufs[i].pool_entry = NULL;
212}
213
214static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
215{
216 unsigned int i;
217
218 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
219 if (entry->elements[i])
220 __free_page(entry->elements[i]);
221 }
222
223 kfree(entry);
224}
225
226static void qeth_free_buffer_pool(struct qeth_card *card)
227{
228 struct qeth_buffer_pool_entry *entry, *tmp;
229
230 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
231 init_list) {
232 list_del(&entry->init_list);
233 qeth_free_pool_entry(entry);
234 }
235}
236
237static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
238{
239 struct qeth_buffer_pool_entry *entry;
240 unsigned int i;
241
242 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
243 if (!entry)
244 return NULL;
245
246 for (i = 0; i < pages; i++) {
247 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
248
249 if (!entry->elements[i]) {
250 qeth_free_pool_entry(entry);
251 return NULL;
252 }
253 }
254
255 return entry;
256}
257
258static int qeth_alloc_buffer_pool(struct qeth_card *card)
259{
260 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
261 unsigned int i;
262
263 QETH_CARD_TEXT(card, 5, "alocpool");
264 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
265 struct qeth_buffer_pool_entry *entry;
266
267 entry = qeth_alloc_pool_entry(buf_elements);
268 if (!entry) {
269 qeth_free_buffer_pool(card);
270 return -ENOMEM;
271 }
272
273 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
274 }
275 return 0;
276}
277
278int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
279{
280 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
281 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
282 struct qeth_buffer_pool_entry *entry, *tmp;
283 int delta = count - pool->buf_count;
284 LIST_HEAD(entries);
285
286 QETH_CARD_TEXT(card, 2, "realcbp");
287
288
289 if (!card->qdio.in_q)
290 goto out;
291
292
293 while (delta < 0) {
294 entry = list_first_entry(&pool->entry_list,
295 struct qeth_buffer_pool_entry,
296 init_list);
297 list_del(&entry->init_list);
298 qeth_free_pool_entry(entry);
299
300 delta++;
301 }
302
303
304 while (delta > 0) {
305 entry = qeth_alloc_pool_entry(buf_elements);
306 if (!entry) {
307 list_for_each_entry_safe(entry, tmp, &entries,
308 init_list) {
309 list_del(&entry->init_list);
310 qeth_free_pool_entry(entry);
311 }
312
313 return -ENOMEM;
314 }
315
316 list_add(&entry->init_list, &entries);
317
318 delta--;
319 }
320
321 list_splice(&entries, &pool->entry_list);
322
323out:
324 card->qdio.in_buf_pool.buf_count = count;
325 pool->buf_count = count;
326 return 0;
327}
328EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
329
330static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
331{
332 if (!q)
333 return;
334
335 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
336 kfree(q);
337}
338
339static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
340{
341 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
342 int i;
343
344 if (!q)
345 return NULL;
346
347 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
348 kfree(q);
349 return NULL;
350 }
351
352 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
353 q->bufs[i].buffer = q->qdio_bufs[i];
354
355 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
356 return q;
357}
358
359static int qeth_cq_init(struct qeth_card *card)
360{
361 int rc;
362
363 if (card->options.cq == QETH_CQ_ENABLED) {
364 QETH_CARD_TEXT(card, 2, "cqinit");
365 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
366 QDIO_MAX_BUFFERS_PER_Q);
367 card->qdio.c_q->next_buf_to_init = 127;
368 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
369 card->qdio.no_in_queues - 1, 0, 127, NULL);
370 if (rc) {
371 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
372 goto out;
373 }
374 }
375 rc = 0;
376out:
377 return rc;
378}
379
380static int qeth_alloc_cq(struct qeth_card *card)
381{
382 if (card->options.cq == QETH_CQ_ENABLED) {
383 QETH_CARD_TEXT(card, 2, "cqon");
384 card->qdio.c_q = qeth_alloc_qdio_queue();
385 if (!card->qdio.c_q) {
386 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
387 return -ENOMEM;
388 }
389
390 card->qdio.no_in_queues = 2;
391 } else {
392 QETH_CARD_TEXT(card, 2, "nocq");
393 card->qdio.c_q = NULL;
394 card->qdio.no_in_queues = 1;
395 }
396 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
397 return 0;
398}
399
400static void qeth_free_cq(struct qeth_card *card)
401{
402 if (card->qdio.c_q) {
403 --card->qdio.no_in_queues;
404 qeth_free_qdio_queue(card->qdio.c_q);
405 card->qdio.c_q = NULL;
406 }
407}
408
409static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
410 int delayed)
411{
412 enum iucv_tx_notify n;
413
414 switch (sbalf15) {
415 case 0:
416 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
417 break;
418 case 4:
419 case 16:
420 case 17:
421 case 18:
422 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
423 TX_NOTIFY_UNREACHABLE;
424 break;
425 default:
426 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
427 TX_NOTIFY_GENERALERROR;
428 break;
429 }
430
431 return n;
432}
433
434static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
435 void *data)
436{
437 ccw->cmd_code = cmd_code;
438 ccw->flags = flags | CCW_FLAG_SLI;
439 ccw->count = len;
440 ccw->cda = (__u32) __pa(data);
441}
442
443static int __qeth_issue_next_read(struct qeth_card *card)
444{
445 struct qeth_cmd_buffer *iob = card->read_cmd;
446 struct qeth_channel *channel = iob->channel;
447 struct ccw1 *ccw = __ccw_from_cmd(iob);
448 int rc;
449
450 QETH_CARD_TEXT(card, 5, "issnxrd");
451 if (channel->state != CH_STATE_UP)
452 return -EIO;
453
454 memset(iob->data, 0, iob->length);
455 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
456 iob->callback = qeth_issue_next_read_cb;
457
458 qeth_get_cmd(iob);
459
460 QETH_CARD_TEXT(card, 6, "noirqpnd");
461 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
462 if (!rc) {
463 channel->active_cmd = iob;
464 } else {
465 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
466 rc, CARD_DEVID(card));
467 qeth_unlock_channel(card, channel);
468 qeth_put_cmd(iob);
469 card->read_or_write_problem = 1;
470 qeth_schedule_recovery(card);
471 }
472 return rc;
473}
474
475static int qeth_issue_next_read(struct qeth_card *card)
476{
477 int ret;
478
479 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
480 ret = __qeth_issue_next_read(card);
481 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
482
483 return ret;
484}
485
486static void qeth_enqueue_cmd(struct qeth_card *card,
487 struct qeth_cmd_buffer *iob)
488{
489 spin_lock_irq(&card->lock);
490 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
491 spin_unlock_irq(&card->lock);
492}
493
494static void qeth_dequeue_cmd(struct qeth_card *card,
495 struct qeth_cmd_buffer *iob)
496{
497 spin_lock_irq(&card->lock);
498 list_del(&iob->list_entry);
499 spin_unlock_irq(&card->lock);
500}
501
502void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
503{
504 iob->rc = reason;
505 complete(&iob->done);
506}
507EXPORT_SYMBOL_GPL(qeth_notify_cmd);
508
509static void qeth_flush_local_addrs4(struct qeth_card *card)
510{
511 struct qeth_local_addr *addr;
512 struct hlist_node *tmp;
513 unsigned int i;
514
515 spin_lock_irq(&card->local_addrs4_lock);
516 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
517 hash_del_rcu(&addr->hnode);
518 kfree_rcu(addr, rcu);
519 }
520 spin_unlock_irq(&card->local_addrs4_lock);
521}
522
523static void qeth_flush_local_addrs6(struct qeth_card *card)
524{
525 struct qeth_local_addr *addr;
526 struct hlist_node *tmp;
527 unsigned int i;
528
529 spin_lock_irq(&card->local_addrs6_lock);
530 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
531 hash_del_rcu(&addr->hnode);
532 kfree_rcu(addr, rcu);
533 }
534 spin_unlock_irq(&card->local_addrs6_lock);
535}
536
537static void qeth_flush_local_addrs(struct qeth_card *card)
538{
539 qeth_flush_local_addrs4(card);
540 qeth_flush_local_addrs6(card);
541}
542
543static void qeth_add_local_addrs4(struct qeth_card *card,
544 struct qeth_ipacmd_local_addrs4 *cmd)
545{
546 unsigned int i;
547
548 if (cmd->addr_length !=
549 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
550 dev_err_ratelimited(&card->gdev->dev,
551 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
552 cmd->addr_length);
553 return;
554 }
555
556 spin_lock(&card->local_addrs4_lock);
557 for (i = 0; i < cmd->count; i++) {
558 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
559 struct qeth_local_addr *addr;
560 bool duplicate = false;
561
562 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
563 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
564 duplicate = true;
565 break;
566 }
567 }
568
569 if (duplicate)
570 continue;
571
572 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
573 if (!addr) {
574 dev_err(&card->gdev->dev,
575 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
576 &cmd->addrs[i].addr);
577 continue;
578 }
579
580 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
581 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
582 }
583 spin_unlock(&card->local_addrs4_lock);
584}
585
586static void qeth_add_local_addrs6(struct qeth_card *card,
587 struct qeth_ipacmd_local_addrs6 *cmd)
588{
589 unsigned int i;
590
591 if (cmd->addr_length !=
592 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
593 dev_err_ratelimited(&card->gdev->dev,
594 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
595 cmd->addr_length);
596 return;
597 }
598
599 spin_lock(&card->local_addrs6_lock);
600 for (i = 0; i < cmd->count; i++) {
601 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
602 struct qeth_local_addr *addr;
603 bool duplicate = false;
604
605 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
606 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
607 duplicate = true;
608 break;
609 }
610 }
611
612 if (duplicate)
613 continue;
614
615 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
616 if (!addr) {
617 dev_err(&card->gdev->dev,
618 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
619 &cmd->addrs[i].addr);
620 continue;
621 }
622
623 addr->addr = cmd->addrs[i].addr;
624 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
625 }
626 spin_unlock(&card->local_addrs6_lock);
627}
628
629static void qeth_del_local_addrs4(struct qeth_card *card,
630 struct qeth_ipacmd_local_addrs4 *cmd)
631{
632 unsigned int i;
633
634 if (cmd->addr_length !=
635 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
636 dev_err_ratelimited(&card->gdev->dev,
637 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
638 cmd->addr_length);
639 return;
640 }
641
642 spin_lock(&card->local_addrs4_lock);
643 for (i = 0; i < cmd->count; i++) {
644 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
645 unsigned int key = ipv4_addr_hash(addr->addr);
646 struct qeth_local_addr *tmp;
647
648 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
649 if (tmp->addr.s6_addr32[3] == addr->addr) {
650 hash_del_rcu(&tmp->hnode);
651 kfree_rcu(tmp, rcu);
652 break;
653 }
654 }
655 }
656 spin_unlock(&card->local_addrs4_lock);
657}
658
659static void qeth_del_local_addrs6(struct qeth_card *card,
660 struct qeth_ipacmd_local_addrs6 *cmd)
661{
662 unsigned int i;
663
664 if (cmd->addr_length !=
665 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
666 dev_err_ratelimited(&card->gdev->dev,
667 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
668 cmd->addr_length);
669 return;
670 }
671
672 spin_lock(&card->local_addrs6_lock);
673 for (i = 0; i < cmd->count; i++) {
674 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
675 u32 key = ipv6_addr_hash(&addr->addr);
676 struct qeth_local_addr *tmp;
677
678 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
679 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
680 hash_del_rcu(&tmp->hnode);
681 kfree_rcu(tmp, rcu);
682 break;
683 }
684 }
685 }
686 spin_unlock(&card->local_addrs6_lock);
687}
688
689static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
690 struct sk_buff *skb)
691{
692 struct qeth_local_addr *tmp;
693 bool is_local = false;
694 unsigned int key;
695 __be32 next_hop;
696
697 if (hash_empty(card->local_addrs4))
698 return false;
699
700 rcu_read_lock();
701 next_hop = qeth_next_hop_v4_rcu(skb,
702 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
703 key = ipv4_addr_hash(next_hop);
704
705 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
706 if (tmp->addr.s6_addr32[3] == next_hop) {
707 is_local = true;
708 break;
709 }
710 }
711 rcu_read_unlock();
712
713 return is_local;
714}
715
716static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
717 struct sk_buff *skb)
718{
719 struct qeth_local_addr *tmp;
720 struct in6_addr *next_hop;
721 bool is_local = false;
722 u32 key;
723
724 if (hash_empty(card->local_addrs6))
725 return false;
726
727 rcu_read_lock();
728 next_hop = qeth_next_hop_v6_rcu(skb,
729 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
730 key = ipv6_addr_hash(next_hop);
731
732 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
733 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
734 is_local = true;
735 break;
736 }
737 }
738 rcu_read_unlock();
739
740 return is_local;
741}
742
743static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
744{
745 struct qeth_card *card = m->private;
746 struct qeth_local_addr *tmp;
747 unsigned int i;
748
749 rcu_read_lock();
750 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
751 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
752 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
753 seq_printf(m, "%pI6c\n", &tmp->addr);
754 rcu_read_unlock();
755
756 return 0;
757}
758
759DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
760
761static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
762 struct qeth_card *card)
763{
764 const char *ipa_name;
765 int com = cmd->hdr.command;
766
767 ipa_name = qeth_get_ipa_cmd_name(com);
768
769 if (rc)
770 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
771 ipa_name, com, CARD_DEVID(card), rc,
772 qeth_get_ipa_msg(rc));
773 else
774 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
775 ipa_name, com, CARD_DEVID(card));
776}
777
778static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
779 struct qeth_ipa_cmd *cmd)
780{
781 QETH_CARD_TEXT(card, 5, "chkipad");
782
783 if (IS_IPA_REPLY(cmd)) {
784 if (cmd->hdr.command != IPA_CMD_SETCCID &&
785 cmd->hdr.command != IPA_CMD_DELCCID &&
786 cmd->hdr.command != IPA_CMD_MODCCID &&
787 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
788 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
789 return cmd;
790 }
791
792
793 switch (cmd->hdr.command) {
794 case IPA_CMD_STOPLAN:
795 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
796 dev_err(&card->gdev->dev,
797 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
798 netdev_name(card->dev));
799 schedule_work(&card->close_dev_work);
800 } else {
801 dev_warn(&card->gdev->dev,
802 "The link for interface %s on CHPID 0x%X failed\n",
803 netdev_name(card->dev), card->info.chpid);
804 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
805 netif_carrier_off(card->dev);
806 }
807 return NULL;
808 case IPA_CMD_STARTLAN:
809 dev_info(&card->gdev->dev,
810 "The link for %s on CHPID 0x%X has been restored\n",
811 netdev_name(card->dev), card->info.chpid);
812 if (card->info.hwtrap)
813 card->info.hwtrap = 2;
814 qeth_schedule_recovery(card);
815 return NULL;
816 case IPA_CMD_SETBRIDGEPORT_IQD:
817 case IPA_CMD_SETBRIDGEPORT_OSA:
818 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
819 if (card->discipline->control_event_handler(card, cmd))
820 return cmd;
821 return NULL;
822 case IPA_CMD_MODCCID:
823 return cmd;
824 case IPA_CMD_REGISTER_LOCAL_ADDR:
825 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
826 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
827 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
828 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
829
830 QETH_CARD_TEXT(card, 3, "irla");
831 return NULL;
832 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
833 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
834 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
835 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
836 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
837
838 QETH_CARD_TEXT(card, 3, "urla");
839 return NULL;
840 default:
841 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
842 return cmd;
843 }
844}
845
846static void qeth_clear_ipacmd_list(struct qeth_card *card)
847{
848 struct qeth_cmd_buffer *iob;
849 unsigned long flags;
850
851 QETH_CARD_TEXT(card, 4, "clipalst");
852
853 spin_lock_irqsave(&card->lock, flags);
854 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
855 qeth_notify_cmd(iob, -ECANCELED);
856 spin_unlock_irqrestore(&card->lock, flags);
857}
858
859static int qeth_check_idx_response(struct qeth_card *card,
860 unsigned char *buffer)
861{
862 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
863 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
864 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
865 buffer[4]);
866 QETH_CARD_TEXT(card, 2, "ckidxres");
867 QETH_CARD_TEXT(card, 2, " idxterm");
868 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
869 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
870 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
871 dev_err(&card->gdev->dev,
872 "The device does not support the configured transport mode\n");
873 return -EPROTONOSUPPORT;
874 }
875 return -EIO;
876 }
877 return 0;
878}
879
880void qeth_put_cmd(struct qeth_cmd_buffer *iob)
881{
882 if (refcount_dec_and_test(&iob->ref_count)) {
883 kfree(iob->data);
884 kfree(iob);
885 }
886}
887EXPORT_SYMBOL_GPL(qeth_put_cmd);
888
889static void qeth_release_buffer_cb(struct qeth_card *card,
890 struct qeth_cmd_buffer *iob,
891 unsigned int data_length)
892{
893 qeth_put_cmd(iob);
894}
895
896static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
897{
898 qeth_notify_cmd(iob, rc);
899 qeth_put_cmd(iob);
900}
901
902struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
903 unsigned int length, unsigned int ccws,
904 long timeout)
905{
906 struct qeth_cmd_buffer *iob;
907
908 if (length > QETH_BUFSIZE)
909 return NULL;
910
911 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
912 if (!iob)
913 return NULL;
914
915 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
916 GFP_KERNEL | GFP_DMA);
917 if (!iob->data) {
918 kfree(iob);
919 return NULL;
920 }
921
922 init_completion(&iob->done);
923 spin_lock_init(&iob->lock);
924 refcount_set(&iob->ref_count, 1);
925 iob->channel = channel;
926 iob->timeout = timeout;
927 iob->length = length;
928 return iob;
929}
930EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
931
932static void qeth_issue_next_read_cb(struct qeth_card *card,
933 struct qeth_cmd_buffer *iob,
934 unsigned int data_length)
935{
936 struct qeth_cmd_buffer *request = NULL;
937 struct qeth_ipa_cmd *cmd = NULL;
938 struct qeth_reply *reply = NULL;
939 struct qeth_cmd_buffer *tmp;
940 unsigned long flags;
941 int rc = 0;
942
943 QETH_CARD_TEXT(card, 4, "sndctlcb");
944 rc = qeth_check_idx_response(card, iob->data);
945 switch (rc) {
946 case 0:
947 break;
948 case -EIO:
949 qeth_schedule_recovery(card);
950 fallthrough;
951 default:
952 qeth_clear_ipacmd_list(card);
953 goto err_idx;
954 }
955
956 cmd = __ipa_reply(iob);
957 if (cmd) {
958 cmd = qeth_check_ipa_data(card, cmd);
959 if (!cmd)
960 goto out;
961 if (IS_OSN(card) && card->osn_info.assist_cb &&
962 cmd->hdr.command != IPA_CMD_STARTLAN) {
963 card->osn_info.assist_cb(card->dev, cmd);
964 goto out;
965 }
966 }
967
968
969 spin_lock_irqsave(&card->lock, flags);
970 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
971 if (tmp->match && tmp->match(tmp, iob)) {
972 request = tmp;
973
974 qeth_get_cmd(request);
975 break;
976 }
977 }
978 spin_unlock_irqrestore(&card->lock, flags);
979
980 if (!request)
981 goto out;
982
983 reply = &request->reply;
984 if (!reply->callback) {
985 rc = 0;
986 goto no_callback;
987 }
988
989 spin_lock_irqsave(&request->lock, flags);
990 if (request->rc)
991
992 rc = request->rc;
993 else
994 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
995 (unsigned long)iob);
996 spin_unlock_irqrestore(&request->lock, flags);
997
998no_callback:
999 if (rc <= 0)
1000 qeth_notify_cmd(request, rc);
1001 qeth_put_cmd(request);
1002out:
1003 memcpy(&card->seqno.pdu_hdr_ack,
1004 QETH_PDU_HEADER_SEQ_NO(iob->data),
1005 QETH_SEQ_NO_LENGTH);
1006 __qeth_issue_next_read(card);
1007err_idx:
1008 qeth_put_cmd(iob);
1009}
1010
1011static int qeth_set_thread_start_bit(struct qeth_card *card,
1012 unsigned long thread)
1013{
1014 unsigned long flags;
1015 int rc = 0;
1016
1017 spin_lock_irqsave(&card->thread_mask_lock, flags);
1018 if (!(card->thread_allowed_mask & thread))
1019 rc = -EPERM;
1020 else if (card->thread_start_mask & thread)
1021 rc = -EBUSY;
1022 else
1023 card->thread_start_mask |= thread;
1024 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1025
1026 return rc;
1027}
1028
1029static void qeth_clear_thread_start_bit(struct qeth_card *card,
1030 unsigned long thread)
1031{
1032 unsigned long flags;
1033
1034 spin_lock_irqsave(&card->thread_mask_lock, flags);
1035 card->thread_start_mask &= ~thread;
1036 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1037 wake_up(&card->wait_q);
1038}
1039
1040static void qeth_clear_thread_running_bit(struct qeth_card *card,
1041 unsigned long thread)
1042{
1043 unsigned long flags;
1044
1045 spin_lock_irqsave(&card->thread_mask_lock, flags);
1046 card->thread_running_mask &= ~thread;
1047 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1048 wake_up_all(&card->wait_q);
1049}
1050
1051static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1052{
1053 unsigned long flags;
1054 int rc = 0;
1055
1056 spin_lock_irqsave(&card->thread_mask_lock, flags);
1057 if (card->thread_start_mask & thread) {
1058 if ((card->thread_allowed_mask & thread) &&
1059 !(card->thread_running_mask & thread)) {
1060 rc = 1;
1061 card->thread_start_mask &= ~thread;
1062 card->thread_running_mask |= thread;
1063 } else
1064 rc = -EPERM;
1065 }
1066 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1067 return rc;
1068}
1069
1070static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1071{
1072 int rc = 0;
1073
1074 wait_event(card->wait_q,
1075 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1076 return rc;
1077}
1078
1079int qeth_schedule_recovery(struct qeth_card *card)
1080{
1081 int rc;
1082
1083 QETH_CARD_TEXT(card, 2, "startrec");
1084
1085 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1086 if (!rc)
1087 schedule_work(&card->kernel_thread_starter);
1088
1089 return rc;
1090}
1091
1092static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1093 struct irb *irb)
1094{
1095 int dstat, cstat;
1096 char *sense;
1097
1098 sense = (char *) irb->ecw;
1099 cstat = irb->scsw.cmd.cstat;
1100 dstat = irb->scsw.cmd.dstat;
1101
1102 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1103 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1104 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1105 QETH_CARD_TEXT(card, 2, "CGENCHK");
1106 dev_warn(&cdev->dev, "The qeth device driver "
1107 "failed to recover an error on the device\n");
1108 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1109 CCW_DEVID(cdev), dstat, cstat);
1110 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1111 16, 1, irb, 64, 1);
1112 return -EIO;
1113 }
1114
1115 if (dstat & DEV_STAT_UNIT_CHECK) {
1116 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1117 SENSE_RESETTING_EVENT_FLAG) {
1118 QETH_CARD_TEXT(card, 2, "REVIND");
1119 return -EIO;
1120 }
1121 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1122 SENSE_COMMAND_REJECT_FLAG) {
1123 QETH_CARD_TEXT(card, 2, "CMDREJi");
1124 return -EIO;
1125 }
1126 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1127 QETH_CARD_TEXT(card, 2, "AFFE");
1128 return -EIO;
1129 }
1130 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1131 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1132 return 0;
1133 }
1134 QETH_CARD_TEXT(card, 2, "DGENCHK");
1135 return -EIO;
1136 }
1137 return 0;
1138}
1139
1140static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
1141 struct irb *irb)
1142{
1143 if (!IS_ERR(irb))
1144 return 0;
1145
1146 switch (PTR_ERR(irb)) {
1147 case -EIO:
1148 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1149 CCW_DEVID(cdev));
1150 QETH_CARD_TEXT(card, 2, "ckirberr");
1151 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1152 return -EIO;
1153 case -ETIMEDOUT:
1154 dev_warn(&cdev->dev, "A hardware operation timed out"
1155 " on the device\n");
1156 QETH_CARD_TEXT(card, 2, "ckirberr");
1157 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1158 return -ETIMEDOUT;
1159 default:
1160 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1161 PTR_ERR(irb), CCW_DEVID(cdev));
1162 QETH_CARD_TEXT(card, 2, "ckirberr");
1163 QETH_CARD_TEXT(card, 2, " rc???");
1164 return PTR_ERR(irb);
1165 }
1166}
1167
1168static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1169 struct irb *irb)
1170{
1171 int rc;
1172 int cstat, dstat;
1173 struct qeth_cmd_buffer *iob = NULL;
1174 struct ccwgroup_device *gdev;
1175 struct qeth_channel *channel;
1176 struct qeth_card *card;
1177
1178
1179 gdev = dev_get_drvdata(&cdev->dev);
1180 card = dev_get_drvdata(&gdev->dev);
1181
1182 QETH_CARD_TEXT(card, 5, "irq");
1183
1184 if (card->read.ccwdev == cdev) {
1185 channel = &card->read;
1186 QETH_CARD_TEXT(card, 5, "read");
1187 } else if (card->write.ccwdev == cdev) {
1188 channel = &card->write;
1189 QETH_CARD_TEXT(card, 5, "write");
1190 } else {
1191 channel = &card->data;
1192 QETH_CARD_TEXT(card, 5, "data");
1193 }
1194
1195 if (intparm == 0) {
1196 QETH_CARD_TEXT(card, 5, "irqunsol");
1197 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1198 QETH_CARD_TEXT(card, 5, "irqunexp");
1199
1200 dev_err(&cdev->dev,
1201 "Received IRQ with intparm %lx, expected %px\n",
1202 intparm, channel->active_cmd);
1203 if (channel->active_cmd)
1204 qeth_cancel_cmd(channel->active_cmd, -EIO);
1205 } else {
1206 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1207 }
1208
1209 qeth_unlock_channel(card, channel);
1210
1211 rc = qeth_check_irb_error(card, cdev, irb);
1212 if (rc) {
1213
1214 if (iob)
1215 qeth_cancel_cmd(iob, rc);
1216 return;
1217 }
1218
1219 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1220 channel->state = CH_STATE_STOPPED;
1221 wake_up(&card->wait_q);
1222 }
1223
1224 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1225 channel->state = CH_STATE_HALTED;
1226 wake_up(&card->wait_q);
1227 }
1228
1229 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1230 SCSW_FCTL_HALT_FUNC))) {
1231 qeth_cancel_cmd(iob, -ECANCELED);
1232 iob = NULL;
1233 }
1234
1235 cstat = irb->scsw.cmd.cstat;
1236 dstat = irb->scsw.cmd.dstat;
1237
1238 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1239 (dstat & DEV_STAT_UNIT_CHECK) ||
1240 (cstat)) {
1241 if (irb->esw.esw0.erw.cons) {
1242 dev_warn(&channel->ccwdev->dev,
1243 "The qeth device driver failed to recover "
1244 "an error on the device\n");
1245 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1246 CCW_DEVID(channel->ccwdev), cstat,
1247 dstat);
1248 print_hex_dump(KERN_WARNING, "qeth: irb ",
1249 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1250 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1251 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1252 }
1253
1254 rc = qeth_get_problem(card, cdev, irb);
1255 if (rc) {
1256 card->read_or_write_problem = 1;
1257 if (iob)
1258 qeth_cancel_cmd(iob, rc);
1259 qeth_clear_ipacmd_list(card);
1260 qeth_schedule_recovery(card);
1261 return;
1262 }
1263 }
1264
1265 if (iob) {
1266
1267 if (irb->scsw.cmd.count > iob->length) {
1268 qeth_cancel_cmd(iob, -EIO);
1269 return;
1270 }
1271 if (iob->callback)
1272 iob->callback(card, iob,
1273 iob->length - irb->scsw.cmd.count);
1274 }
1275}
1276
1277static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1278 struct qeth_qdio_out_buffer *buf,
1279 enum iucv_tx_notify notification)
1280{
1281 struct sk_buff *skb;
1282
1283 skb_queue_walk(&buf->skb_list, skb) {
1284 struct sock *sk = skb->sk;
1285
1286 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1287 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1288 if (sk && sk->sk_family == PF_IUCV)
1289 iucv_sk(sk)->sk_txnotify(sk, notification);
1290 }
1291}
1292
1293static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1294 struct qeth_qdio_out_buffer *buf, bool error,
1295 int budget)
1296{
1297 struct sk_buff *skb;
1298
1299
1300 if (buf->next_element_to_fill == 0)
1301 return;
1302
1303 QETH_TXQ_STAT_INC(queue, bufs);
1304 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1305 if (error) {
1306 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1307 } else {
1308 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1309 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1310 }
1311
1312 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1313 unsigned int bytes = qdisc_pkt_len(skb);
1314 bool is_tso = skb_is_gso(skb);
1315 unsigned int packets;
1316
1317 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1318 if (!error) {
1319 if (skb->ip_summed == CHECKSUM_PARTIAL)
1320 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1321 if (skb_is_nonlinear(skb))
1322 QETH_TXQ_STAT_INC(queue, skbs_sg);
1323 if (is_tso) {
1324 QETH_TXQ_STAT_INC(queue, skbs_tso);
1325 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1326 }
1327 }
1328
1329 napi_consume_skb(skb, budget);
1330 }
1331}
1332
1333static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1334 struct qeth_qdio_out_buffer *buf,
1335 bool error, int budget)
1336{
1337 int i;
1338
1339
1340 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
1341 atomic_dec(&queue->set_pci_flags_count);
1342 QETH_TXQ_STAT_INC(queue, completion_irq);
1343 }
1344
1345 qeth_tx_complete_buf(queue, buf, error, budget);
1346
1347 for (i = 0; i < queue->max_elements; ++i) {
1348 void *data = phys_to_virt(buf->buffer->element[i].addr);
1349
1350 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
1351 kmem_cache_free(qeth_core_header_cache, data);
1352 }
1353
1354 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1355 buf->next_element_to_fill = 0;
1356 buf->frames = 0;
1357 buf->bytes = 0;
1358 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1359}
1360
1361static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1362{
1363 if (buf->aob)
1364 qdio_release_aob(buf->aob);
1365 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1366}
1367
1368static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1369 struct qeth_qdio_out_q *queue,
1370 bool drain, int budget)
1371{
1372 struct qeth_qdio_out_buffer *buf, *tmp;
1373
1374 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
1375 struct qeth_qaob_priv1 *priv;
1376 struct qaob *aob = buf->aob;
1377 enum iucv_tx_notify notify;
1378 unsigned int i;
1379
1380 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1381 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
1382 QETH_CARD_TEXT(card, 5, "fp");
1383 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1384
1385 notify = drain ? TX_NOTIFY_GENERALERROR :
1386 qeth_compute_cq_notification(aob->aorc, 1);
1387 qeth_notify_skbs(queue, buf, notify);
1388 qeth_tx_complete_buf(queue, buf, drain, budget);
1389
1390 for (i = 0;
1391 i < aob->sb_count && i < queue->max_elements;
1392 i++) {
1393 void *data = phys_to_virt(aob->sba[i]);
1394
1395 if (test_bit(i, buf->from_kmem_cache) && data)
1396 kmem_cache_free(qeth_core_header_cache,
1397 data);
1398 }
1399
1400 list_del(&buf->list_entry);
1401 qeth_free_out_buf(buf);
1402 }
1403 }
1404}
1405
1406static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1407{
1408 int j;
1409
1410 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
1411
1412 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1413 if (!q->bufs[j])
1414 continue;
1415
1416 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1417 if (free) {
1418 qeth_free_out_buf(q->bufs[j]);
1419 q->bufs[j] = NULL;
1420 }
1421 }
1422}
1423
1424static void qeth_drain_output_queues(struct qeth_card *card)
1425{
1426 int i;
1427
1428 QETH_CARD_TEXT(card, 2, "clearqdbf");
1429
1430 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1431 if (card->qdio.out_qs[i])
1432 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1433 }
1434}
1435
1436static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1437{
1438 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1439
1440 if (card->qdio.no_out_queues == max)
1441 return;
1442
1443 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1444 qeth_free_qdio_queues(card);
1445
1446 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1447 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1448
1449 card->qdio.no_out_queues = max;
1450}
1451
1452static int qeth_update_from_chp_desc(struct qeth_card *card)
1453{
1454 struct ccw_device *ccwdev;
1455 struct channel_path_desc_fmt0 *chp_dsc;
1456
1457 QETH_CARD_TEXT(card, 2, "chp_desc");
1458
1459 ccwdev = card->data.ccwdev;
1460 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1461 if (!chp_dsc)
1462 return -ENOMEM;
1463
1464 card->info.func_level = 0x4100 + chp_dsc->desc;
1465
1466 if (IS_OSD(card) || IS_OSX(card))
1467
1468 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1469
1470 kfree(chp_dsc);
1471 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1472 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1473 return 0;
1474}
1475
1476static void qeth_init_qdio_info(struct qeth_card *card)
1477{
1478 QETH_CARD_TEXT(card, 4, "intqdinf");
1479 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1480 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1481 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1482
1483
1484 card->qdio.no_in_queues = 1;
1485 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1486 if (IS_IQD(card))
1487 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1488 else
1489 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1490 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1491 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1492 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1493}
1494
1495static void qeth_set_initial_options(struct qeth_card *card)
1496{
1497 card->options.route4.type = NO_ROUTER;
1498 card->options.route6.type = NO_ROUTER;
1499 card->options.isolation = ISOLATION_MODE_NONE;
1500 card->options.cq = QETH_CQ_DISABLED;
1501 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1502}
1503
1504static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1505{
1506 unsigned long flags;
1507 int rc = 0;
1508
1509 spin_lock_irqsave(&card->thread_mask_lock, flags);
1510 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1511 (u8) card->thread_start_mask,
1512 (u8) card->thread_allowed_mask,
1513 (u8) card->thread_running_mask);
1514 rc = (card->thread_start_mask & thread);
1515 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1516 return rc;
1517}
1518
1519static int qeth_do_reset(void *data);
1520static void qeth_start_kernel_thread(struct work_struct *work)
1521{
1522 struct task_struct *ts;
1523 struct qeth_card *card = container_of(work, struct qeth_card,
1524 kernel_thread_starter);
1525 QETH_CARD_TEXT(card, 2, "strthrd");
1526
1527 if (card->read.state != CH_STATE_UP &&
1528 card->write.state != CH_STATE_UP)
1529 return;
1530 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1531 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1532 if (IS_ERR(ts)) {
1533 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1534 qeth_clear_thread_running_bit(card,
1535 QETH_RECOVER_THREAD);
1536 }
1537 }
1538}
1539
1540static void qeth_buffer_reclaim_work(struct work_struct *);
1541static void qeth_setup_card(struct qeth_card *card)
1542{
1543 QETH_CARD_TEXT(card, 2, "setupcrd");
1544
1545 card->info.type = CARD_RDEV(card)->id.driver_info;
1546 card->state = CARD_STATE_DOWN;
1547 spin_lock_init(&card->lock);
1548 spin_lock_init(&card->thread_mask_lock);
1549 mutex_init(&card->conf_mutex);
1550 mutex_init(&card->discipline_mutex);
1551 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1552 INIT_LIST_HEAD(&card->cmd_waiter_list);
1553 init_waitqueue_head(&card->wait_q);
1554 qeth_set_initial_options(card);
1555
1556 INIT_LIST_HEAD(&card->ipato.entries);
1557 qeth_init_qdio_info(card);
1558 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1559 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1560 hash_init(card->rx_mode_addrs);
1561 hash_init(card->local_addrs4);
1562 hash_init(card->local_addrs6);
1563 spin_lock_init(&card->local_addrs4_lock);
1564 spin_lock_init(&card->local_addrs6_lock);
1565}
1566
1567static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1568{
1569 struct qeth_card *card = container_of(slr, struct qeth_card,
1570 qeth_service_level);
1571 if (card->info.mcl_level[0])
1572 seq_printf(m, "qeth: %s firmware level %s\n",
1573 CARD_BUS_ID(card), card->info.mcl_level);
1574}
1575
1576static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1577{
1578 struct qeth_card *card;
1579
1580 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1581 card = kzalloc(sizeof(*card), GFP_KERNEL);
1582 if (!card)
1583 goto out;
1584 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1585
1586 card->gdev = gdev;
1587 dev_set_drvdata(&gdev->dev, card);
1588 CARD_RDEV(card) = gdev->cdev[0];
1589 CARD_WDEV(card) = gdev->cdev[1];
1590 CARD_DDEV(card) = gdev->cdev[2];
1591
1592 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1593 dev_name(&gdev->dev));
1594 if (!card->event_wq)
1595 goto out_wq;
1596
1597 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1598 if (!card->read_cmd)
1599 goto out_read_cmd;
1600
1601 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1602 qeth_debugfs_root);
1603 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1604 &qeth_debugfs_local_addr_fops);
1605
1606 card->qeth_service_level.seq_print = qeth_core_sl_print;
1607 register_service_level(&card->qeth_service_level);
1608 return card;
1609
1610out_read_cmd:
1611 destroy_workqueue(card->event_wq);
1612out_wq:
1613 dev_set_drvdata(&gdev->dev, NULL);
1614 kfree(card);
1615out:
1616 return NULL;
1617}
1618
1619static int qeth_clear_channel(struct qeth_card *card,
1620 struct qeth_channel *channel)
1621{
1622 int rc;
1623
1624 QETH_CARD_TEXT(card, 3, "clearch");
1625 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1626 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1627 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1628
1629 if (rc)
1630 return rc;
1631 rc = wait_event_interruptible_timeout(card->wait_q,
1632 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1633 if (rc == -ERESTARTSYS)
1634 return rc;
1635 if (channel->state != CH_STATE_STOPPED)
1636 return -ETIME;
1637 channel->state = CH_STATE_DOWN;
1638 return 0;
1639}
1640
1641static int qeth_halt_channel(struct qeth_card *card,
1642 struct qeth_channel *channel)
1643{
1644 int rc;
1645
1646 QETH_CARD_TEXT(card, 3, "haltch");
1647 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1648 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1649 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1650
1651 if (rc)
1652 return rc;
1653 rc = wait_event_interruptible_timeout(card->wait_q,
1654 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1655 if (rc == -ERESTARTSYS)
1656 return rc;
1657 if (channel->state != CH_STATE_HALTED)
1658 return -ETIME;
1659 return 0;
1660}
1661
1662static int qeth_stop_channel(struct qeth_channel *channel)
1663{
1664 struct ccw_device *cdev = channel->ccwdev;
1665 int rc;
1666
1667 rc = ccw_device_set_offline(cdev);
1668
1669 spin_lock_irq(get_ccwdev_lock(cdev));
1670 if (channel->active_cmd)
1671 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1672 channel->active_cmd);
1673
1674 cdev->handler = NULL;
1675 spin_unlock_irq(get_ccwdev_lock(cdev));
1676
1677 return rc;
1678}
1679
1680static int qeth_start_channel(struct qeth_channel *channel)
1681{
1682 struct ccw_device *cdev = channel->ccwdev;
1683 int rc;
1684
1685 channel->state = CH_STATE_DOWN;
1686 xchg(&channel->active_cmd, NULL);
1687
1688 spin_lock_irq(get_ccwdev_lock(cdev));
1689 cdev->handler = qeth_irq;
1690 spin_unlock_irq(get_ccwdev_lock(cdev));
1691
1692 rc = ccw_device_set_online(cdev);
1693 if (rc)
1694 goto err;
1695
1696 return 0;
1697
1698err:
1699 spin_lock_irq(get_ccwdev_lock(cdev));
1700 cdev->handler = NULL;
1701 spin_unlock_irq(get_ccwdev_lock(cdev));
1702 return rc;
1703}
1704
1705static int qeth_halt_channels(struct qeth_card *card)
1706{
1707 int rc1 = 0, rc2 = 0, rc3 = 0;
1708
1709 QETH_CARD_TEXT(card, 3, "haltchs");
1710 rc1 = qeth_halt_channel(card, &card->read);
1711 rc2 = qeth_halt_channel(card, &card->write);
1712 rc3 = qeth_halt_channel(card, &card->data);
1713 if (rc1)
1714 return rc1;
1715 if (rc2)
1716 return rc2;
1717 return rc3;
1718}
1719
1720static int qeth_clear_channels(struct qeth_card *card)
1721{
1722 int rc1 = 0, rc2 = 0, rc3 = 0;
1723
1724 QETH_CARD_TEXT(card, 3, "clearchs");
1725 rc1 = qeth_clear_channel(card, &card->read);
1726 rc2 = qeth_clear_channel(card, &card->write);
1727 rc3 = qeth_clear_channel(card, &card->data);
1728 if (rc1)
1729 return rc1;
1730 if (rc2)
1731 return rc2;
1732 return rc3;
1733}
1734
1735static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1736{
1737 int rc = 0;
1738
1739 QETH_CARD_TEXT(card, 3, "clhacrd");
1740
1741 if (halt)
1742 rc = qeth_halt_channels(card);
1743 if (rc)
1744 return rc;
1745 return qeth_clear_channels(card);
1746}
1747
1748static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1749{
1750 int rc = 0;
1751
1752 QETH_CARD_TEXT(card, 3, "qdioclr");
1753 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1754 QETH_QDIO_CLEANING)) {
1755 case QETH_QDIO_ESTABLISHED:
1756 if (IS_IQD(card))
1757 rc = qdio_shutdown(CARD_DDEV(card),
1758 QDIO_FLAG_CLEANUP_USING_HALT);
1759 else
1760 rc = qdio_shutdown(CARD_DDEV(card),
1761 QDIO_FLAG_CLEANUP_USING_CLEAR);
1762 if (rc)
1763 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1764 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1765 break;
1766 case QETH_QDIO_CLEANING:
1767 return rc;
1768 default:
1769 break;
1770 }
1771 rc = qeth_clear_halt_card(card, use_halt);
1772 if (rc)
1773 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1774 return rc;
1775}
1776
1777static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1778{
1779 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1780 struct diag26c_vnic_resp *response = NULL;
1781 struct diag26c_vnic_req *request = NULL;
1782 struct ccw_dev_id id;
1783 char userid[80];
1784 int rc = 0;
1785
1786 QETH_CARD_TEXT(card, 2, "vmlayer");
1787
1788 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1789 if (rc)
1790 goto out;
1791
1792 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1793 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1794 if (!request || !response) {
1795 rc = -ENOMEM;
1796 goto out;
1797 }
1798
1799 ccw_device_get_id(CARD_RDEV(card), &id);
1800 request->resp_buf_len = sizeof(*response);
1801 request->resp_version = DIAG26C_VERSION6_VM65918;
1802 request->req_format = DIAG26C_VNIC_INFO;
1803 ASCEBC(userid, 8);
1804 memcpy(&request->sys_name, userid, 8);
1805 request->devno = id.devno;
1806
1807 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1808 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1809 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1810 if (rc)
1811 goto out;
1812 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1813
1814 if (request->resp_buf_len < sizeof(*response) ||
1815 response->version != request->resp_version) {
1816 rc = -EIO;
1817 goto out;
1818 }
1819
1820 if (response->protocol == VNIC_INFO_PROT_L2)
1821 disc = QETH_DISCIPLINE_LAYER2;
1822 else if (response->protocol == VNIC_INFO_PROT_L3)
1823 disc = QETH_DISCIPLINE_LAYER3;
1824
1825out:
1826 kfree(response);
1827 kfree(request);
1828 if (rc)
1829 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1830 return disc;
1831}
1832
1833
1834static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1835{
1836 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1837
1838 if (IS_OSM(card) || IS_OSN(card))
1839 disc = QETH_DISCIPLINE_LAYER2;
1840 else if (IS_VM_NIC(card))
1841 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1842 qeth_vm_detect_layer(card);
1843
1844 switch (disc) {
1845 case QETH_DISCIPLINE_LAYER2:
1846 QETH_CARD_TEXT(card, 3, "force l2");
1847 break;
1848 case QETH_DISCIPLINE_LAYER3:
1849 QETH_CARD_TEXT(card, 3, "force l3");
1850 break;
1851 default:
1852 QETH_CARD_TEXT(card, 3, "force no");
1853 }
1854
1855 return disc;
1856}
1857
1858static void qeth_set_blkt_defaults(struct qeth_card *card)
1859{
1860 QETH_CARD_TEXT(card, 2, "cfgblkt");
1861
1862 if (card->info.use_v1_blkt) {
1863 card->info.blkt.time_total = 0;
1864 card->info.blkt.inter_packet = 0;
1865 card->info.blkt.inter_packet_jumbo = 0;
1866 } else {
1867 card->info.blkt.time_total = 250;
1868 card->info.blkt.inter_packet = 5;
1869 card->info.blkt.inter_packet_jumbo = 15;
1870 }
1871}
1872
1873static void qeth_idx_init(struct qeth_card *card)
1874{
1875 memset(&card->seqno, 0, sizeof(card->seqno));
1876
1877 card->token.issuer_rm_w = 0x00010103UL;
1878 card->token.cm_filter_w = 0x00010108UL;
1879 card->token.cm_connection_w = 0x0001010aUL;
1880 card->token.ulp_filter_w = 0x0001010bUL;
1881 card->token.ulp_connection_w = 0x0001010dUL;
1882
1883 switch (card->info.type) {
1884 case QETH_CARD_TYPE_IQD:
1885 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1886 break;
1887 case QETH_CARD_TYPE_OSD:
1888 case QETH_CARD_TYPE_OSN:
1889 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1890 break;
1891 default:
1892 break;
1893 }
1894}
1895
1896static void qeth_idx_finalize_cmd(struct qeth_card *card,
1897 struct qeth_cmd_buffer *iob)
1898{
1899 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1900 QETH_SEQ_NO_LENGTH);
1901 if (iob->channel == &card->write)
1902 card->seqno.trans_hdr++;
1903}
1904
1905static int qeth_peer_func_level(int level)
1906{
1907 if ((level & 0xff) == 8)
1908 return (level & 0xff) + 0x400;
1909 if (((level >> 8) & 3) == 1)
1910 return (level & 0xff) + 0x200;
1911 return level;
1912}
1913
1914static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1915 struct qeth_cmd_buffer *iob)
1916{
1917 qeth_idx_finalize_cmd(card, iob);
1918
1919 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1920 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1921 card->seqno.pdu_hdr++;
1922 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1923 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1924
1925 iob->callback = qeth_release_buffer_cb;
1926}
1927
1928static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1929 struct qeth_cmd_buffer *reply)
1930{
1931
1932 return !IS_IPA(reply->data);
1933}
1934
1935static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1936 const void *data,
1937 unsigned int data_length)
1938{
1939 struct qeth_cmd_buffer *iob;
1940
1941 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1942 if (!iob)
1943 return NULL;
1944
1945 memcpy(iob->data, data, data_length);
1946 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1947 iob->data);
1948 iob->finalize = qeth_mpc_finalize_cmd;
1949 iob->match = qeth_mpc_match_reply;
1950 return iob;
1951}
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1974
1975static int qeth_send_control_data(struct qeth_card *card,
1976 struct qeth_cmd_buffer *iob,
1977 int (*reply_cb)(struct qeth_card *cb_card,
1978 struct qeth_reply *cb_reply,
1979 unsigned long cb_cmd),
1980 void *reply_param)
1981{
1982 struct qeth_channel *channel = iob->channel;
1983 struct qeth_reply *reply = &iob->reply;
1984 long timeout = iob->timeout;
1985 int rc;
1986
1987 QETH_CARD_TEXT(card, 2, "sendctl");
1988
1989 reply->callback = reply_cb;
1990 reply->param = reply_param;
1991
1992 timeout = wait_event_interruptible_timeout(card->wait_q,
1993 qeth_trylock_channel(channel, iob),
1994 timeout);
1995 if (timeout <= 0) {
1996 qeth_put_cmd(iob);
1997 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1998 }
1999
2000 if (iob->finalize)
2001 iob->finalize(card, iob);
2002 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
2003
2004 qeth_enqueue_cmd(card, iob);
2005
2006
2007 qeth_get_cmd(iob);
2008
2009 QETH_CARD_TEXT(card, 6, "noirqpnd");
2010 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
2011 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
2012 (addr_t) iob, 0, 0, timeout);
2013 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
2014 if (rc) {
2015 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
2016 CARD_DEVID(card), rc);
2017 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2018 qeth_dequeue_cmd(card, iob);
2019 qeth_put_cmd(iob);
2020 qeth_unlock_channel(card, channel);
2021 goto out;
2022 }
2023
2024 timeout = wait_for_completion_interruptible_timeout(&iob->done,
2025 timeout);
2026 if (timeout <= 0)
2027 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2028
2029 qeth_dequeue_cmd(card, iob);
2030
2031 if (reply_cb) {
2032
2033 spin_lock_irq(&iob->lock);
2034 if (rc)
2035
2036 iob->rc = rc;
2037 spin_unlock_irq(&iob->lock);
2038 }
2039
2040 if (!rc)
2041 rc = iob->rc;
2042
2043out:
2044 qeth_put_cmd(iob);
2045 return rc;
2046}
2047
2048struct qeth_node_desc {
2049 struct node_descriptor nd1;
2050 struct node_descriptor nd2;
2051 struct node_descriptor nd3;
2052};
2053
2054static void qeth_read_conf_data_cb(struct qeth_card *card,
2055 struct qeth_cmd_buffer *iob,
2056 unsigned int data_length)
2057{
2058 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2059 int rc = 0;
2060 u8 *tag;
2061
2062 QETH_CARD_TEXT(card, 2, "cfgunit");
2063
2064 if (data_length < sizeof(*nd)) {
2065 rc = -EINVAL;
2066 goto out;
2067 }
2068
2069 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2070 nd->nd1.plant[1] == _ascebc['M'];
2071 tag = (u8 *)&nd->nd1.tag;
2072 card->info.chpid = tag[0];
2073 card->info.unit_addr2 = tag[1];
2074
2075 tag = (u8 *)&nd->nd2.tag;
2076 card->info.cula = tag[1];
2077
2078 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2079 nd->nd3.model[1] == 0xF0 &&
2080 nd->nd3.model[2] >= 0xF1 &&
2081 nd->nd3.model[2] <= 0xF4;
2082
2083out:
2084 qeth_notify_cmd(iob, rc);
2085 qeth_put_cmd(iob);
2086}
2087
2088static int qeth_read_conf_data(struct qeth_card *card)
2089{
2090 struct qeth_channel *channel = &card->data;
2091 struct qeth_cmd_buffer *iob;
2092 struct ciw *ciw;
2093
2094
2095 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2096 if (!ciw || ciw->cmd == 0)
2097 return -EOPNOTSUPP;
2098 if (ciw->count < sizeof(struct qeth_node_desc))
2099 return -EINVAL;
2100
2101 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2102 if (!iob)
2103 return -ENOMEM;
2104
2105 iob->callback = qeth_read_conf_data_cb;
2106 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2107 iob->data);
2108
2109 return qeth_send_control_data(card, iob, NULL, NULL);
2110}
2111
2112static int qeth_idx_check_activate_response(struct qeth_card *card,
2113 struct qeth_channel *channel,
2114 struct qeth_cmd_buffer *iob)
2115{
2116 int rc;
2117
2118 rc = qeth_check_idx_response(card, iob->data);
2119 if (rc)
2120 return rc;
2121
2122 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2123 return 0;
2124
2125
2126 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2127 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2128
2129 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2130 case QETH_IDX_ACT_ERR_EXCL:
2131 dev_err(&channel->ccwdev->dev,
2132 "The adapter is used exclusively by another host\n");
2133 return -EBUSY;
2134 case QETH_IDX_ACT_ERR_AUTH:
2135 case QETH_IDX_ACT_ERR_AUTH_USER:
2136 dev_err(&channel->ccwdev->dev,
2137 "Setting the device online failed because of insufficient authorization\n");
2138 return -EPERM;
2139 default:
2140 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2141 CCW_DEVID(channel->ccwdev));
2142 return -EIO;
2143 }
2144}
2145
2146static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
2147 struct qeth_cmd_buffer *iob,
2148 unsigned int data_length)
2149{
2150 struct qeth_channel *channel = iob->channel;
2151 u16 peer_level;
2152 int rc;
2153
2154 QETH_CARD_TEXT(card, 2, "idxrdcb");
2155
2156 rc = qeth_idx_check_activate_response(card, channel, iob);
2157 if (rc)
2158 goto out;
2159
2160 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2161 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2162 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2163 CCW_DEVID(channel->ccwdev),
2164 card->info.func_level, peer_level);
2165 rc = -EINVAL;
2166 goto out;
2167 }
2168
2169 memcpy(&card->token.issuer_rm_r,
2170 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2171 QETH_MPC_TOKEN_LENGTH);
2172 memcpy(&card->info.mcl_level[0],
2173 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2174
2175out:
2176 qeth_notify_cmd(iob, rc);
2177 qeth_put_cmd(iob);
2178}
2179
2180static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2181 struct qeth_cmd_buffer *iob,
2182 unsigned int data_length)
2183{
2184 struct qeth_channel *channel = iob->channel;
2185 u16 peer_level;
2186 int rc;
2187
2188 QETH_CARD_TEXT(card, 2, "idxwrcb");
2189
2190 rc = qeth_idx_check_activate_response(card, channel, iob);
2191 if (rc)
2192 goto out;
2193
2194 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2195 if ((peer_level & ~0x0100) !=
2196 qeth_peer_func_level(card->info.func_level)) {
2197 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2198 CCW_DEVID(channel->ccwdev),
2199 card->info.func_level, peer_level);
2200 rc = -EINVAL;
2201 }
2202
2203out:
2204 qeth_notify_cmd(iob, rc);
2205 qeth_put_cmd(iob);
2206}
2207
2208static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2209 struct qeth_cmd_buffer *iob)
2210{
2211 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2212 u8 port = ((u8)card->dev->dev_port) | 0x80;
2213 struct ccw1 *ccw = __ccw_from_cmd(iob);
2214
2215 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2216 iob->data);
2217 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2218 iob->finalize = qeth_idx_finalize_cmd;
2219
2220 port |= QETH_IDX_ACT_INVAL_FRAME;
2221 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2222 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2223 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2224 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2225 &card->info.func_level, 2);
2226 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2227 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2228}
2229
2230static int qeth_idx_activate_read_channel(struct qeth_card *card)
2231{
2232 struct qeth_channel *channel = &card->read;
2233 struct qeth_cmd_buffer *iob;
2234 int rc;
2235
2236 QETH_CARD_TEXT(card, 2, "idxread");
2237
2238 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2239 if (!iob)
2240 return -ENOMEM;
2241
2242 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2243 qeth_idx_setup_activate_cmd(card, iob);
2244 iob->callback = qeth_idx_activate_read_channel_cb;
2245
2246 rc = qeth_send_control_data(card, iob, NULL, NULL);
2247 if (rc)
2248 return rc;
2249
2250 channel->state = CH_STATE_UP;
2251 return 0;
2252}
2253
2254static int qeth_idx_activate_write_channel(struct qeth_card *card)
2255{
2256 struct qeth_channel *channel = &card->write;
2257 struct qeth_cmd_buffer *iob;
2258 int rc;
2259
2260 QETH_CARD_TEXT(card, 2, "idxwrite");
2261
2262 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2263 if (!iob)
2264 return -ENOMEM;
2265
2266 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2267 qeth_idx_setup_activate_cmd(card, iob);
2268 iob->callback = qeth_idx_activate_write_channel_cb;
2269
2270 rc = qeth_send_control_data(card, iob, NULL, NULL);
2271 if (rc)
2272 return rc;
2273
2274 channel->state = CH_STATE_UP;
2275 return 0;
2276}
2277
2278static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2279 unsigned long data)
2280{
2281 struct qeth_cmd_buffer *iob;
2282
2283 QETH_CARD_TEXT(card, 2, "cmenblcb");
2284
2285 iob = (struct qeth_cmd_buffer *) data;
2286 memcpy(&card->token.cm_filter_r,
2287 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2288 QETH_MPC_TOKEN_LENGTH);
2289 return 0;
2290}
2291
2292static int qeth_cm_enable(struct qeth_card *card)
2293{
2294 struct qeth_cmd_buffer *iob;
2295
2296 QETH_CARD_TEXT(card, 2, "cmenable");
2297
2298 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2299 if (!iob)
2300 return -ENOMEM;
2301
2302 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2303 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2304 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2305 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2306
2307 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2308}
2309
2310static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2311 unsigned long data)
2312{
2313 struct qeth_cmd_buffer *iob;
2314
2315 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2316
2317 iob = (struct qeth_cmd_buffer *) data;
2318 memcpy(&card->token.cm_connection_r,
2319 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2320 QETH_MPC_TOKEN_LENGTH);
2321 return 0;
2322}
2323
2324static int qeth_cm_setup(struct qeth_card *card)
2325{
2326 struct qeth_cmd_buffer *iob;
2327
2328 QETH_CARD_TEXT(card, 2, "cmsetup");
2329
2330 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2331 if (!iob)
2332 return -ENOMEM;
2333
2334 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2335 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2336 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2337 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2338 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2339 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2340 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2341}
2342
2343static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2344{
2345 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2346 link_type == QETH_LINK_TYPE_HSTR) {
2347 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2348 return false;
2349 }
2350
2351 return true;
2352}
2353
2354static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2355{
2356 struct net_device *dev = card->dev;
2357 unsigned int new_mtu;
2358
2359 if (!max_mtu) {
2360
2361 if (IS_IQD(card))
2362 return -EINVAL;
2363
2364 max_mtu = ETH_MAX_MTU;
2365 }
2366
2367 rtnl_lock();
2368 if (IS_IQD(card)) {
2369
2370 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2371
2372
2373 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2374 if (dev->max_mtu && dev->max_mtu != max_mtu)
2375 qeth_free_qdio_queues(card);
2376 } else {
2377 if (dev->mtu)
2378 new_mtu = dev->mtu;
2379
2380 else if (IS_LAYER2(card))
2381 new_mtu = ETH_DATA_LEN;
2382 else
2383 new_mtu = ETH_DATA_LEN - 8;
2384 }
2385
2386 dev->max_mtu = max_mtu;
2387 dev->mtu = min(new_mtu, max_mtu);
2388 rtnl_unlock();
2389 return 0;
2390}
2391
2392static int qeth_get_mtu_outof_framesize(int framesize)
2393{
2394 switch (framesize) {
2395 case 0x4000:
2396 return 8192;
2397 case 0x6000:
2398 return 16384;
2399 case 0xa000:
2400 return 32768;
2401 case 0xffff:
2402 return 57344;
2403 default:
2404 return 0;
2405 }
2406}
2407
2408static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2409 unsigned long data)
2410{
2411 __u16 mtu, framesize;
2412 __u16 len;
2413 struct qeth_cmd_buffer *iob;
2414 u8 link_type = 0;
2415
2416 QETH_CARD_TEXT(card, 2, "ulpenacb");
2417
2418 iob = (struct qeth_cmd_buffer *) data;
2419 memcpy(&card->token.ulp_filter_r,
2420 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2421 QETH_MPC_TOKEN_LENGTH);
2422 if (IS_IQD(card)) {
2423 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2424 mtu = qeth_get_mtu_outof_framesize(framesize);
2425 } else {
2426 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2427 }
2428 *(u16 *)reply->param = mtu;
2429
2430 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2431 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2432 memcpy(&link_type,
2433 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2434 if (!qeth_is_supported_link_type(card, link_type))
2435 return -EPROTONOSUPPORT;
2436 }
2437
2438 card->info.link_type = link_type;
2439 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2440 return 0;
2441}
2442
2443static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2444{
2445 if (IS_OSN(card))
2446 return QETH_PROT_OSN2;
2447 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2448}
2449
2450static int qeth_ulp_enable(struct qeth_card *card)
2451{
2452 u8 prot_type = qeth_mpc_select_prot_type(card);
2453 struct qeth_cmd_buffer *iob;
2454 u16 max_mtu;
2455 int rc;
2456
2457 QETH_CARD_TEXT(card, 2, "ulpenabl");
2458
2459 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2460 if (!iob)
2461 return -ENOMEM;
2462
2463 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2464 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2465 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2466 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2467 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2468 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2469 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2470 if (rc)
2471 return rc;
2472 return qeth_update_max_mtu(card, max_mtu);
2473}
2474
2475static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2476 unsigned long data)
2477{
2478 struct qeth_cmd_buffer *iob;
2479
2480 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2481
2482 iob = (struct qeth_cmd_buffer *) data;
2483 memcpy(&card->token.ulp_connection_r,
2484 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2485 QETH_MPC_TOKEN_LENGTH);
2486 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2487 3)) {
2488 QETH_CARD_TEXT(card, 2, "olmlimit");
2489 dev_err(&card->gdev->dev, "A connection could not be "
2490 "established because of an OLM limit\n");
2491 return -EMLINK;
2492 }
2493 return 0;
2494}
2495
2496static int qeth_ulp_setup(struct qeth_card *card)
2497{
2498 __u16 temp;
2499 struct qeth_cmd_buffer *iob;
2500
2501 QETH_CARD_TEXT(card, 2, "ulpsetup");
2502
2503 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2504 if (!iob)
2505 return -ENOMEM;
2506
2507 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2508 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2509 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2510 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2511 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2512 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2513
2514 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2515 temp = (card->info.cula << 8) + card->info.unit_addr2;
2516 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2517 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2518}
2519
2520static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2521 gfp_t gfp)
2522{
2523 struct qeth_qdio_out_buffer *newbuf;
2524
2525 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
2526 if (!newbuf)
2527 return -ENOMEM;
2528
2529 newbuf->buffer = q->qdio_bufs[bidx];
2530 skb_queue_head_init(&newbuf->skb_list);
2531 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2532 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2533 q->bufs[bidx] = newbuf;
2534 return 0;
2535}
2536
2537static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2538{
2539 if (!q)
2540 return;
2541
2542 qeth_drain_output_queue(q, true);
2543 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2544 kfree(q);
2545}
2546
2547static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2548{
2549 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2550 unsigned int i;
2551
2552 if (!q)
2553 return NULL;
2554
2555 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2556 goto err_qdio_bufs;
2557
2558 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
2559 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
2560 goto err_out_bufs;
2561 }
2562
2563 return q;
2564
2565err_out_bufs:
2566 while (i > 0)
2567 qeth_free_out_buf(q->bufs[--i]);
2568 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2569err_qdio_bufs:
2570 kfree(q);
2571 return NULL;
2572}
2573
2574static void qeth_tx_completion_timer(struct timer_list *timer)
2575{
2576 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2577
2578 napi_schedule(&queue->napi);
2579 QETH_TXQ_STAT_INC(queue, completion_timer);
2580}
2581
2582static int qeth_alloc_qdio_queues(struct qeth_card *card)
2583{
2584 unsigned int i;
2585
2586 QETH_CARD_TEXT(card, 2, "allcqdbf");
2587
2588 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2589 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2590 return 0;
2591
2592 QETH_CARD_TEXT(card, 2, "inq");
2593 card->qdio.in_q = qeth_alloc_qdio_queue();
2594 if (!card->qdio.in_q)
2595 goto out_nomem;
2596
2597
2598 if (qeth_alloc_buffer_pool(card))
2599 goto out_freeinq;
2600
2601
2602 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2603 struct qeth_qdio_out_q *queue;
2604
2605 queue = qeth_alloc_output_queue();
2606 if (!queue)
2607 goto out_freeoutq;
2608 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2609 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2610 card->qdio.out_qs[i] = queue;
2611 queue->card = card;
2612 queue->queue_no = i;
2613 INIT_LIST_HEAD(&queue->pending_bufs);
2614 spin_lock_init(&queue->lock);
2615 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2616 if (IS_IQD(card)) {
2617 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2618 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2619 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2620 } else {
2621 queue->coalesce_usecs = USEC_PER_SEC;
2622 queue->max_coalesced_frames = 0;
2623 queue->rescan_usecs = 10 * USEC_PER_SEC;
2624 }
2625 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2626 }
2627
2628
2629 if (qeth_alloc_cq(card))
2630 goto out_freeoutq;
2631
2632 return 0;
2633
2634out_freeoutq:
2635 while (i > 0) {
2636 qeth_free_output_queue(card->qdio.out_qs[--i]);
2637 card->qdio.out_qs[i] = NULL;
2638 }
2639 qeth_free_buffer_pool(card);
2640out_freeinq:
2641 qeth_free_qdio_queue(card->qdio.in_q);
2642 card->qdio.in_q = NULL;
2643out_nomem:
2644 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2645 return -ENOMEM;
2646}
2647
2648static void qeth_free_qdio_queues(struct qeth_card *card)
2649{
2650 int i, j;
2651
2652 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2653 QETH_QDIO_UNINITIALIZED)
2654 return;
2655
2656 qeth_free_cq(card);
2657 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2658 if (card->qdio.in_q->bufs[j].rx_skb)
2659 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2660 }
2661 qeth_free_qdio_queue(card->qdio.in_q);
2662 card->qdio.in_q = NULL;
2663
2664 qeth_free_buffer_pool(card);
2665
2666 for (i = 0; i < card->qdio.no_out_queues; i++) {
2667 qeth_free_output_queue(card->qdio.out_qs[i]);
2668 card->qdio.out_qs[i] = NULL;
2669 }
2670}
2671
2672static void qeth_fill_qib_parms(struct qeth_card *card,
2673 struct qeth_qib_parms *parms)
2674{
2675 struct qeth_qdio_out_q *queue;
2676 unsigned int i;
2677
2678 parms->pcit_magic[0] = 'P';
2679 parms->pcit_magic[1] = 'C';
2680 parms->pcit_magic[2] = 'I';
2681 parms->pcit_magic[3] = 'T';
2682 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2683 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2684 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2685 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2686
2687 parms->blkt_magic[0] = 'B';
2688 parms->blkt_magic[1] = 'L';
2689 parms->blkt_magic[2] = 'K';
2690 parms->blkt_magic[3] = 'T';
2691 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2692 parms->blkt_total = card->info.blkt.time_total;
2693 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2694 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2695
2696
2697 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2698 return;
2699
2700 parms->pque_magic[0] = 'P';
2701 parms->pque_magic[1] = 'Q';
2702 parms->pque_magic[2] = 'U';
2703 parms->pque_magic[3] = 'E';
2704 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2705 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2706 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2707
2708 qeth_for_each_output_queue(card, queue, i)
2709 parms->pque_priority[i] = queue->priority;
2710}
2711
2712static int qeth_qdio_activate(struct qeth_card *card)
2713{
2714 QETH_CARD_TEXT(card, 3, "qdioact");
2715 return qdio_activate(CARD_DDEV(card));
2716}
2717
2718static int qeth_dm_act(struct qeth_card *card)
2719{
2720 struct qeth_cmd_buffer *iob;
2721
2722 QETH_CARD_TEXT(card, 2, "dmact");
2723
2724 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2725 if (!iob)
2726 return -ENOMEM;
2727
2728 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2729 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2730 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2731 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2732 return qeth_send_control_data(card, iob, NULL, NULL);
2733}
2734
2735static int qeth_mpc_initialize(struct qeth_card *card)
2736{
2737 int rc;
2738
2739 QETH_CARD_TEXT(card, 2, "mpcinit");
2740
2741 rc = qeth_issue_next_read(card);
2742 if (rc) {
2743 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2744 return rc;
2745 }
2746 rc = qeth_cm_enable(card);
2747 if (rc) {
2748 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2749 return rc;
2750 }
2751 rc = qeth_cm_setup(card);
2752 if (rc) {
2753 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2754 return rc;
2755 }
2756 rc = qeth_ulp_enable(card);
2757 if (rc) {
2758 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2759 return rc;
2760 }
2761 rc = qeth_ulp_setup(card);
2762 if (rc) {
2763 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2764 return rc;
2765 }
2766 rc = qeth_alloc_qdio_queues(card);
2767 if (rc) {
2768 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2769 return rc;
2770 }
2771 rc = qeth_qdio_establish(card);
2772 if (rc) {
2773 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2774 qeth_free_qdio_queues(card);
2775 return rc;
2776 }
2777 rc = qeth_qdio_activate(card);
2778 if (rc) {
2779 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2780 return rc;
2781 }
2782 rc = qeth_dm_act(card);
2783 if (rc) {
2784 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2785 return rc;
2786 }
2787
2788 return 0;
2789}
2790
2791static void qeth_print_status_message(struct qeth_card *card)
2792{
2793 switch (card->info.type) {
2794 case QETH_CARD_TYPE_OSD:
2795 case QETH_CARD_TYPE_OSM:
2796 case QETH_CARD_TYPE_OSX:
2797
2798
2799
2800
2801 if (!card->info.mcl_level[0]) {
2802 sprintf(card->info.mcl_level, "%02x%02x",
2803 card->info.mcl_level[2],
2804 card->info.mcl_level[3]);
2805 break;
2806 }
2807 fallthrough;
2808 case QETH_CARD_TYPE_IQD:
2809 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2810 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2811 card->info.mcl_level[0]];
2812 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2813 card->info.mcl_level[1]];
2814 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2815 card->info.mcl_level[2]];
2816 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2817 card->info.mcl_level[3]];
2818 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2819 }
2820 break;
2821 default:
2822 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2823 }
2824 dev_info(&card->gdev->dev,
2825 "Device is a%s card%s%s%s\nwith link type %s.\n",
2826 qeth_get_cardname(card),
2827 (card->info.mcl_level[0]) ? " (level: " : "",
2828 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2829 (card->info.mcl_level[0]) ? ")" : "",
2830 qeth_get_cardname_short(card));
2831}
2832
2833static void qeth_initialize_working_pool_list(struct qeth_card *card)
2834{
2835 struct qeth_buffer_pool_entry *entry;
2836
2837 QETH_CARD_TEXT(card, 5, "inwrklst");
2838
2839 list_for_each_entry(entry,
2840 &card->qdio.init_pool.entry_list, init_list) {
2841 qeth_put_buffer_pool_entry(card, entry);
2842 }
2843}
2844
2845static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2846 struct qeth_card *card)
2847{
2848 struct qeth_buffer_pool_entry *entry;
2849 int i, free;
2850
2851 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2852 return NULL;
2853
2854 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2855 free = 1;
2856 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2857 if (page_count(entry->elements[i]) > 1) {
2858 free = 0;
2859 break;
2860 }
2861 }
2862 if (free) {
2863 list_del_init(&entry->list);
2864 return entry;
2865 }
2866 }
2867
2868
2869 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2870 struct qeth_buffer_pool_entry, list);
2871 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2872 if (page_count(entry->elements[i]) > 1) {
2873 struct page *page = dev_alloc_page();
2874
2875 if (!page)
2876 return NULL;
2877
2878 __free_page(entry->elements[i]);
2879 entry->elements[i] = page;
2880 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2881 }
2882 }
2883 list_del_init(&entry->list);
2884 return entry;
2885}
2886
2887static int qeth_init_input_buffer(struct qeth_card *card,
2888 struct qeth_qdio_buffer *buf)
2889{
2890 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2891 int i;
2892
2893 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2894 buf->rx_skb = netdev_alloc_skb(card->dev,
2895 ETH_HLEN +
2896 sizeof(struct ipv6hdr));
2897 if (!buf->rx_skb)
2898 return -ENOMEM;
2899 }
2900
2901 if (!pool_entry) {
2902 pool_entry = qeth_find_free_buffer_pool_entry(card);
2903 if (!pool_entry)
2904 return -ENOBUFS;
2905
2906 buf->pool_entry = pool_entry;
2907 }
2908
2909
2910
2911
2912
2913
2914
2915 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2916 buf->buffer->element[i].length = PAGE_SIZE;
2917 buf->buffer->element[i].addr =
2918 page_to_phys(pool_entry->elements[i]);
2919 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2920 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2921 else
2922 buf->buffer->element[i].eflags = 0;
2923 buf->buffer->element[i].sflags = 0;
2924 }
2925 return 0;
2926}
2927
2928static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2929 struct qeth_qdio_out_q *queue)
2930{
2931 if (!IS_IQD(card) ||
2932 qeth_iqd_is_mcast_queue(card, queue) ||
2933 card->options.cq == QETH_CQ_ENABLED ||
2934 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2935 return 1;
2936
2937 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2938}
2939
2940static int qeth_init_qdio_queues(struct qeth_card *card)
2941{
2942 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
2943 unsigned int i;
2944 int rc;
2945
2946 QETH_CARD_TEXT(card, 2, "initqdqs");
2947
2948
2949 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2950 memset(&card->rx, 0, sizeof(struct qeth_rx));
2951
2952 qeth_initialize_working_pool_list(card);
2953
2954 for (i = 0; i < rx_bufs; i++) {
2955 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2956 if (rc)
2957 return rc;
2958 }
2959
2960 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
2961 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, rx_bufs,
2962 NULL);
2963 if (rc) {
2964 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2965 return rc;
2966 }
2967
2968
2969 rc = qeth_cq_init(card);
2970 if (rc) {
2971 return rc;
2972 }
2973
2974
2975 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2976 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2977
2978 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2979 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2980 queue->next_buf_to_fill = 0;
2981 queue->do_pack = 0;
2982 queue->prev_hdr = NULL;
2983 queue->coalesced_frames = 0;
2984 queue->bulk_start = 0;
2985 queue->bulk_count = 0;
2986 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
2987 atomic_set(&queue->used_buffers, 0);
2988 atomic_set(&queue->set_pci_flags_count, 0);
2989 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2990 }
2991 return 0;
2992}
2993
2994static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2995 struct qeth_cmd_buffer *iob)
2996{
2997 qeth_mpc_finalize_cmd(card, iob);
2998
2999
3000 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
3001}
3002
3003void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3004 u16 cmd_length,
3005 bool (*match)(struct qeth_cmd_buffer *iob,
3006 struct qeth_cmd_buffer *reply))
3007{
3008 u8 prot_type = qeth_mpc_select_prot_type(card);
3009 u16 total_length = iob->length;
3010
3011 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
3012 iob->data);
3013 iob->finalize = qeth_ipa_finalize_cmd;
3014 iob->match = match;
3015
3016 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
3017 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
3018 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
3019 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
3020 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
3021 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
3022 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
3023 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
3024}
3025EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
3026
3027static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
3028 struct qeth_cmd_buffer *reply)
3029{
3030 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3031
3032 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3033}
3034
3035struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3036 enum qeth_ipa_cmds cmd_code,
3037 enum qeth_prot_versions prot,
3038 unsigned int data_length)
3039{
3040 struct qeth_cmd_buffer *iob;
3041 struct qeth_ipacmd_hdr *hdr;
3042
3043 data_length += offsetof(struct qeth_ipa_cmd, data);
3044 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3045 QETH_IPA_TIMEOUT);
3046 if (!iob)
3047 return NULL;
3048
3049 qeth_prepare_ipa_cmd(card, iob, data_length, qeth_ipa_match_reply);
3050
3051 hdr = &__ipa_cmd(iob)->hdr;
3052 hdr->command = cmd_code;
3053 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3054
3055 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3056 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3057 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3058 hdr->param_count = 1;
3059 hdr->prot_version = prot;
3060 return iob;
3061}
3062EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3063
3064static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3065 struct qeth_reply *reply, unsigned long data)
3066{
3067 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3068
3069 return (cmd->hdr.return_code) ? -EIO : 0;
3070}
3071
3072
3073
3074
3075
3076
3077
3078int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3079 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3080 unsigned long),
3081 void *reply_param)
3082{
3083 int rc;
3084
3085 QETH_CARD_TEXT(card, 4, "sendipa");
3086
3087 if (card->read_or_write_problem) {
3088 qeth_put_cmd(iob);
3089 return -EIO;
3090 }
3091
3092 if (reply_cb == NULL)
3093 reply_cb = qeth_send_ipa_cmd_cb;
3094 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3095 if (rc == -ETIME) {
3096 qeth_clear_ipacmd_list(card);
3097 qeth_schedule_recovery(card);
3098 }
3099 return rc;
3100}
3101EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3102
3103static int qeth_send_startlan_cb(struct qeth_card *card,
3104 struct qeth_reply *reply, unsigned long data)
3105{
3106 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3107
3108 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3109 return -ENETDOWN;
3110
3111 return (cmd->hdr.return_code) ? -EIO : 0;
3112}
3113
3114static int qeth_send_startlan(struct qeth_card *card)
3115{
3116 struct qeth_cmd_buffer *iob;
3117
3118 QETH_CARD_TEXT(card, 2, "strtlan");
3119
3120 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3121 if (!iob)
3122 return -ENOMEM;
3123 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3124}
3125
3126static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3127{
3128 if (!cmd->hdr.return_code)
3129 cmd->hdr.return_code =
3130 cmd->data.setadapterparms.hdr.return_code;
3131 return cmd->hdr.return_code;
3132}
3133
3134static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3135 struct qeth_reply *reply, unsigned long data)
3136{
3137 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3138 struct qeth_query_cmds_supp *query_cmd;
3139
3140 QETH_CARD_TEXT(card, 3, "quyadpcb");
3141 if (qeth_setadpparms_inspect_rc(cmd))
3142 return -EIO;
3143
3144 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3145 if (query_cmd->lan_type & 0x7f) {
3146 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3147 return -EPROTONOSUPPORT;
3148
3149 card->info.link_type = query_cmd->lan_type;
3150 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3151 }
3152
3153 card->options.adp.supported = query_cmd->supported_cmds;
3154 return 0;
3155}
3156
3157static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3158 enum qeth_ipa_setadp_cmd adp_cmd,
3159 unsigned int data_length)
3160{
3161 struct qeth_ipacmd_setadpparms_hdr *hdr;
3162 struct qeth_cmd_buffer *iob;
3163
3164 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3165 data_length +
3166 offsetof(struct qeth_ipacmd_setadpparms,
3167 data));
3168 if (!iob)
3169 return NULL;
3170
3171 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3172 hdr->cmdlength = sizeof(*hdr) + data_length;
3173 hdr->command_code = adp_cmd;
3174 hdr->used_total = 1;
3175 hdr->seq_no = 1;
3176 return iob;
3177}
3178
3179static int qeth_query_setadapterparms(struct qeth_card *card)
3180{
3181 int rc;
3182 struct qeth_cmd_buffer *iob;
3183
3184 QETH_CARD_TEXT(card, 3, "queryadp");
3185 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3186 SETADP_DATA_SIZEOF(query_cmds_supp));
3187 if (!iob)
3188 return -ENOMEM;
3189 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3190 return rc;
3191}
3192
3193static int qeth_query_ipassists_cb(struct qeth_card *card,
3194 struct qeth_reply *reply, unsigned long data)
3195{
3196 struct qeth_ipa_cmd *cmd;
3197
3198 QETH_CARD_TEXT(card, 2, "qipasscb");
3199
3200 cmd = (struct qeth_ipa_cmd *) data;
3201
3202 switch (cmd->hdr.return_code) {
3203 case IPA_RC_SUCCESS:
3204 break;
3205 case IPA_RC_NOTSUPP:
3206 case IPA_RC_L2_UNSUPPORTED_CMD:
3207 QETH_CARD_TEXT(card, 2, "ipaunsup");
3208 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3209 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3210 return -EOPNOTSUPP;
3211 default:
3212 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3213 CARD_DEVID(card), cmd->hdr.return_code);
3214 return -EIO;
3215 }
3216
3217 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3218 card->options.ipa4 = cmd->hdr.assists;
3219 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3220 card->options.ipa6 = cmd->hdr.assists;
3221 else
3222 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3223 CARD_DEVID(card));
3224 return 0;
3225}
3226
3227static int qeth_query_ipassists(struct qeth_card *card,
3228 enum qeth_prot_versions prot)
3229{
3230 int rc;
3231 struct qeth_cmd_buffer *iob;
3232
3233 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3234 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3235 if (!iob)
3236 return -ENOMEM;
3237 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3238 return rc;
3239}
3240
3241static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3242 struct qeth_reply *reply, unsigned long data)
3243{
3244 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3245 struct qeth_query_switch_attributes *attrs;
3246 struct qeth_switch_info *sw_info;
3247
3248 QETH_CARD_TEXT(card, 2, "qswiatcb");
3249 if (qeth_setadpparms_inspect_rc(cmd))
3250 return -EIO;
3251
3252 sw_info = (struct qeth_switch_info *)reply->param;
3253 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3254 sw_info->capabilities = attrs->capabilities;
3255 sw_info->settings = attrs->settings;
3256 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3257 sw_info->settings);
3258 return 0;
3259}
3260
3261int qeth_query_switch_attributes(struct qeth_card *card,
3262 struct qeth_switch_info *sw_info)
3263{
3264 struct qeth_cmd_buffer *iob;
3265
3266 QETH_CARD_TEXT(card, 2, "qswiattr");
3267 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3268 return -EOPNOTSUPP;
3269 if (!netif_carrier_ok(card->dev))
3270 return -ENOMEDIUM;
3271 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3272 if (!iob)
3273 return -ENOMEM;
3274 return qeth_send_ipa_cmd(card, iob,
3275 qeth_query_switch_attributes_cb, sw_info);
3276}
3277
3278struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3279 enum qeth_diags_cmds sub_cmd,
3280 unsigned int data_length)
3281{
3282 struct qeth_ipacmd_diagass *cmd;
3283 struct qeth_cmd_buffer *iob;
3284
3285 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3286 DIAG_HDR_LEN + data_length);
3287 if (!iob)
3288 return NULL;
3289
3290 cmd = &__ipa_cmd(iob)->data.diagass;
3291 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3292 cmd->subcmd = sub_cmd;
3293 return iob;
3294}
3295EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3296
3297static int qeth_query_setdiagass_cb(struct qeth_card *card,
3298 struct qeth_reply *reply, unsigned long data)
3299{
3300 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3301 u16 rc = cmd->hdr.return_code;
3302
3303 if (rc) {
3304 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3305 return -EIO;
3306 }
3307
3308 card->info.diagass_support = cmd->data.diagass.ext;
3309 return 0;
3310}
3311
3312static int qeth_query_setdiagass(struct qeth_card *card)
3313{
3314 struct qeth_cmd_buffer *iob;
3315
3316 QETH_CARD_TEXT(card, 2, "qdiagass");
3317 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3318 if (!iob)
3319 return -ENOMEM;
3320 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3321}
3322
3323static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3324{
3325 unsigned long info = get_zeroed_page(GFP_KERNEL);
3326 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3327 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3328 struct ccw_dev_id ccwid;
3329 int level;
3330
3331 tid->chpid = card->info.chpid;
3332 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3333 tid->ssid = ccwid.ssid;
3334 tid->devno = ccwid.devno;
3335 if (!info)
3336 return;
3337 level = stsi(NULL, 0, 0, 0);
3338 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3339 tid->lparnr = info222->lpar_number;
3340 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3341 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3342 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3343 }
3344 free_page(info);
3345}
3346
3347static int qeth_hw_trap_cb(struct qeth_card *card,
3348 struct qeth_reply *reply, unsigned long data)
3349{
3350 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3351 u16 rc = cmd->hdr.return_code;
3352
3353 if (rc) {
3354 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3355 return -EIO;
3356 }
3357 return 0;
3358}
3359
3360int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3361{
3362 struct qeth_cmd_buffer *iob;
3363 struct qeth_ipa_cmd *cmd;
3364
3365 QETH_CARD_TEXT(card, 2, "diagtrap");
3366 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3367 if (!iob)
3368 return -ENOMEM;
3369 cmd = __ipa_cmd(iob);
3370 cmd->data.diagass.type = 1;
3371 cmd->data.diagass.action = action;
3372 switch (action) {
3373 case QETH_DIAGS_TRAP_ARM:
3374 cmd->data.diagass.options = 0x0003;
3375 cmd->data.diagass.ext = 0x00010000 +
3376 sizeof(struct qeth_trap_id);
3377 qeth_get_trap_id(card,
3378 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3379 break;
3380 case QETH_DIAGS_TRAP_DISARM:
3381 cmd->data.diagass.options = 0x0001;
3382 break;
3383 case QETH_DIAGS_TRAP_CAPTURE:
3384 break;
3385 }
3386 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3387}
3388
3389static int qeth_check_qdio_errors(struct qeth_card *card,
3390 struct qdio_buffer *buf,
3391 unsigned int qdio_error,
3392 const char *dbftext)
3393{
3394 if (qdio_error) {
3395 QETH_CARD_TEXT(card, 2, dbftext);
3396 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3397 buf->element[15].sflags);
3398 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3399 buf->element[14].sflags);
3400 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3401 if ((buf->element[15].sflags) == 0x12) {
3402 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3403 return 0;
3404 } else
3405 return 1;
3406 }
3407 return 0;
3408}
3409
3410static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3411 unsigned int count)
3412{
3413 struct qeth_qdio_q *queue = card->qdio.in_q;
3414 struct list_head *lh;
3415 int i;
3416 int rc;
3417 int newcount = 0;
3418
3419
3420 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3421 for (i = queue->next_buf_to_init;
3422 i < queue->next_buf_to_init + count; ++i) {
3423 if (qeth_init_input_buffer(card,
3424 &queue->bufs[QDIO_BUFNR(i)])) {
3425 break;
3426 } else {
3427 newcount++;
3428 }
3429 }
3430
3431 if (newcount < count) {
3432
3433
3434 atomic_set(&card->force_alloc_skb, 3);
3435 count = newcount;
3436 } else {
3437 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3438 }
3439
3440 if (!count) {
3441 i = 0;
3442 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3443 i++;
3444 if (i == card->qdio.in_buf_pool.buf_count) {
3445 QETH_CARD_TEXT(card, 2, "qsarbw");
3446 schedule_delayed_work(
3447 &card->buffer_reclaim_work,
3448 QETH_RECLAIM_WORK_TIME);
3449 }
3450 return 0;
3451 }
3452
3453 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3454 queue->next_buf_to_init, count, NULL);
3455 if (rc) {
3456 QETH_CARD_TEXT(card, 2, "qinberr");
3457 }
3458 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3459 count);
3460 return count;
3461 }
3462
3463 return 0;
3464}
3465
3466static void qeth_buffer_reclaim_work(struct work_struct *work)
3467{
3468 struct qeth_card *card = container_of(to_delayed_work(work),
3469 struct qeth_card,
3470 buffer_reclaim_work);
3471
3472 local_bh_disable();
3473 napi_schedule(&card->napi);
3474
3475 local_bh_enable();
3476}
3477
3478static void qeth_handle_send_error(struct qeth_card *card,
3479 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3480{
3481 int sbalf15 = buffer->buffer->element[15].sflags;
3482
3483 QETH_CARD_TEXT(card, 6, "hdsnderr");
3484 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3485
3486 if (!qdio_err)
3487 return;
3488
3489 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3490 return;
3491
3492 QETH_CARD_TEXT(card, 1, "lnkfail");
3493 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3494 (u16)qdio_err, (u8)sbalf15);
3495}
3496
3497
3498
3499
3500
3501
3502
3503static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3504{
3505 struct qeth_qdio_out_buffer *buffer;
3506
3507 buffer = queue->bufs[queue->next_buf_to_fill];
3508 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3509 (buffer->next_element_to_fill > 0)) {
3510
3511 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3512 queue->next_buf_to_fill =
3513 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3514 return 1;
3515 }
3516 return 0;
3517}
3518
3519
3520
3521
3522
3523static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3524{
3525 if (!queue->do_pack) {
3526 if (atomic_read(&queue->used_buffers)
3527 >= QETH_HIGH_WATERMARK_PACK){
3528
3529 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3530 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3531 queue->do_pack = 1;
3532 }
3533 }
3534}
3535
3536
3537
3538
3539
3540
3541
3542static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3543{
3544 if (queue->do_pack) {
3545 if (atomic_read(&queue->used_buffers)
3546 <= QETH_LOW_WATERMARK_PACK) {
3547
3548 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3549 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3550 queue->do_pack = 0;
3551 return qeth_prep_flush_pack_buffer(queue);
3552 }
3553 }
3554 return 0;
3555}
3556
3557static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3558 int count)
3559{
3560 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3561 struct qeth_card *card = queue->card;
3562 unsigned int frames, usecs;
3563 struct qaob *aob = NULL;
3564 int rc;
3565 int i;
3566
3567 for (i = index; i < index + count; ++i) {
3568 unsigned int bidx = QDIO_BUFNR(i);
3569 struct sk_buff *skb;
3570
3571 buf = queue->bufs[bidx];
3572 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3573 SBAL_EFLAGS_LAST_ENTRY;
3574 queue->coalesced_frames += buf->frames;
3575
3576 if (IS_IQD(card)) {
3577 skb_queue_walk(&buf->skb_list, skb)
3578 skb_tx_timestamp(skb);
3579 }
3580 }
3581
3582 if (IS_IQD(card)) {
3583 if (card->options.cq == QETH_CQ_ENABLED &&
3584 !qeth_iqd_is_mcast_queue(card, queue) &&
3585 count == 1) {
3586 if (!buf->aob)
3587 buf->aob = qdio_allocate_aob();
3588 if (buf->aob) {
3589 struct qeth_qaob_priv1 *priv;
3590
3591 aob = buf->aob;
3592 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3593 priv->state = QETH_QAOB_ISSUED;
3594 priv->queue_no = queue->queue_no;
3595 }
3596 }
3597 } else {
3598 if (!queue->do_pack) {
3599 if ((atomic_read(&queue->used_buffers) >=
3600 (QETH_HIGH_WATERMARK_PACK -
3601 QETH_WATERMARK_PACK_FUZZ)) &&
3602 !atomic_read(&queue->set_pci_flags_count)) {
3603
3604
3605 atomic_inc(&queue->set_pci_flags_count);
3606 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3607 }
3608 } else {
3609 if (!atomic_read(&queue->set_pci_flags_count)) {
3610
3611
3612
3613
3614
3615
3616
3617
3618 atomic_inc(&queue->set_pci_flags_count);
3619 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3620 }
3621 }
3622 }
3623
3624 QETH_TXQ_STAT_INC(queue, doorbell);
3625 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_OUTPUT, queue->queue_no,
3626 index, count, aob);
3627
3628 switch (rc) {
3629 case 0:
3630 case -ENOBUFS:
3631
3632
3633
3634 frames = READ_ONCE(queue->max_coalesced_frames);
3635 usecs = READ_ONCE(queue->coalesce_usecs);
3636
3637 if (frames && queue->coalesced_frames >= frames) {
3638 napi_schedule(&queue->napi);
3639 queue->coalesced_frames = 0;
3640 QETH_TXQ_STAT_INC(queue, coal_frames);
3641 } else if (qeth_use_tx_irqs(card) &&
3642 atomic_read(&queue->used_buffers) >= 32) {
3643
3644 napi_schedule(&queue->napi);
3645 QETH_TXQ_STAT_INC(queue, coal_frames);
3646 } else if (usecs) {
3647 qeth_tx_arm_timer(queue, usecs);
3648 }
3649
3650 break;
3651 default:
3652 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3653 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3654 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3655 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3656 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3657
3658
3659
3660 qeth_schedule_recovery(queue->card);
3661 }
3662}
3663
3664static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3665{
3666 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3667
3668 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3669 queue->prev_hdr = NULL;
3670 queue->bulk_count = 0;
3671}
3672
3673static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3674{
3675
3676
3677
3678
3679 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3680 !atomic_read(&queue->set_pci_flags_count)) {
3681 unsigned int index, flush_cnt;
3682 bool q_was_packing;
3683
3684 spin_lock(&queue->lock);
3685
3686 index = queue->next_buf_to_fill;
3687 q_was_packing = queue->do_pack;
3688
3689 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3690 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3691 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3692
3693 if (flush_cnt) {
3694 qeth_flush_buffers(queue, index, flush_cnt);
3695 if (q_was_packing)
3696 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3697 }
3698
3699 spin_unlock(&queue->lock);
3700 }
3701}
3702
3703static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3704{
3705 struct qeth_card *card = (struct qeth_card *)card_ptr;
3706
3707 napi_schedule_irqoff(&card->napi);
3708}
3709
3710int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3711{
3712 int rc;
3713
3714 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3715 rc = -1;
3716 goto out;
3717 } else {
3718 if (card->options.cq == cq) {
3719 rc = 0;
3720 goto out;
3721 }
3722
3723 qeth_free_qdio_queues(card);
3724 card->options.cq = cq;
3725 rc = 0;
3726 }
3727out:
3728 return rc;
3729
3730}
3731EXPORT_SYMBOL_GPL(qeth_configure_cq);
3732
3733static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3734{
3735 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3736 unsigned int queue_no = priv->queue_no;
3737
3738 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3739
3740 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3741 queue_no < card->qdio.no_out_queues)
3742 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3743}
3744
3745static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3746 unsigned int queue, int first_element,
3747 int count)
3748{
3749 struct qeth_qdio_q *cq = card->qdio.c_q;
3750 int i;
3751 int rc;
3752
3753 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3754 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3755 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3756
3757 if (qdio_err) {
3758 netif_tx_stop_all_queues(card->dev);
3759 qeth_schedule_recovery(card);
3760 return;
3761 }
3762
3763 for (i = first_element; i < first_element + count; ++i) {
3764 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3765 int e = 0;
3766
3767 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3768 buffer->element[e].addr) {
3769 unsigned long phys_aob_addr = buffer->element[e].addr;
3770
3771 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
3772 ++e;
3773 }
3774 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3775 }
3776 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3777 cq->next_buf_to_init, count, NULL);
3778 if (rc) {
3779 dev_warn(&card->gdev->dev,
3780 "QDIO reported an error, rc=%i\n", rc);
3781 QETH_CARD_TEXT(card, 2, "qcqherr");
3782 }
3783
3784 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3785}
3786
3787static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3788 unsigned int qdio_err, int queue,
3789 int first_elem, int count,
3790 unsigned long card_ptr)
3791{
3792 struct qeth_card *card = (struct qeth_card *)card_ptr;
3793
3794 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3795 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3796
3797 if (qdio_err)
3798 qeth_schedule_recovery(card);
3799}
3800
3801static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3802 unsigned int qdio_error, int __queue,
3803 int first_element, int count,
3804 unsigned long card_ptr)
3805{
3806 struct qeth_card *card = (struct qeth_card *) card_ptr;
3807 struct net_device *dev = card->dev;
3808
3809 QETH_CARD_TEXT(card, 6, "qdouhdl");
3810 if (qdio_error & QDIO_ERROR_FATAL) {
3811 QETH_CARD_TEXT(card, 2, "achkcond");
3812 netif_tx_stop_all_queues(dev);
3813 qeth_schedule_recovery(card);
3814 }
3815}
3816
3817
3818
3819
3820int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3821{
3822 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3823 u8 tos;
3824
3825 switch (card->qdio.do_prio_queueing) {
3826 case QETH_PRIO_Q_ING_TOS:
3827 case QETH_PRIO_Q_ING_PREC:
3828 switch (vlan_get_protocol(skb)) {
3829 case htons(ETH_P_IP):
3830 tos = ipv4_get_dsfield(ip_hdr(skb));
3831 break;
3832 case htons(ETH_P_IPV6):
3833 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3834 break;
3835 default:
3836 return card->qdio.default_out_queue;
3837 }
3838 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3839 return ~tos >> 6 & 3;
3840 if (tos & IPTOS_MINCOST)
3841 return 3;
3842 if (tos & IPTOS_RELIABILITY)
3843 return 2;
3844 if (tos & IPTOS_THROUGHPUT)
3845 return 1;
3846 if (tos & IPTOS_LOWDELAY)
3847 return 0;
3848 break;
3849 case QETH_PRIO_Q_ING_SKB:
3850 if (skb->priority > 5)
3851 return 0;
3852 return ~skb->priority >> 1 & 3;
3853 case QETH_PRIO_Q_ING_VLAN:
3854 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3855 return ~ntohs(veth->h_vlan_TCI) >>
3856 (VLAN_PRIO_SHIFT + 1) & 3;
3857 break;
3858 case QETH_PRIO_Q_ING_FIXED:
3859 return card->qdio.default_out_queue;
3860 default:
3861 break;
3862 }
3863 return card->qdio.default_out_queue;
3864}
3865EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3866
3867
3868
3869
3870
3871
3872
3873
3874static int qeth_get_elements_for_frags(struct sk_buff *skb)
3875{
3876 int cnt, elements = 0;
3877
3878 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3879 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3880
3881 elements += qeth_get_elements_for_range(
3882 (addr_t)skb_frag_address(frag),
3883 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3884 }
3885 return elements;
3886}
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3898{
3899 unsigned int elements = qeth_get_elements_for_frags(skb);
3900 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3901 addr_t start = (addr_t)skb->data + data_offset;
3902
3903 if (start != end)
3904 elements += qeth_get_elements_for_range(start, end);
3905 return elements;
3906}
3907EXPORT_SYMBOL_GPL(qeth_count_elements);
3908
3909#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3910 MAX_TCP_HEADER)
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3928 struct sk_buff *skb, struct qeth_hdr **hdr,
3929 unsigned int hdr_len, unsigned int proto_len,
3930 unsigned int *elements)
3931{
3932 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
3933 const unsigned int contiguous = proto_len ? proto_len : 1;
3934 const unsigned int max_elements = queue->max_elements;
3935 unsigned int __elements;
3936 addr_t start, end;
3937 bool push_ok;
3938 int rc;
3939
3940check_layout:
3941 start = (addr_t)skb->data - hdr_len;
3942 end = (addr_t)skb->data;
3943
3944 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3945
3946 push_ok = true;
3947
3948 if (skb_is_gso(skb))
3949 __elements = 1 + qeth_count_elements(skb, proto_len);
3950 else
3951 __elements = qeth_count_elements(skb, 0);
3952 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3953
3954 push_ok = true;
3955 __elements = 1 + qeth_count_elements(skb, 0);
3956 } else {
3957
3958 push_ok = false;
3959 __elements = 1 + qeth_count_elements(skb, proto_len);
3960 }
3961
3962
3963 if (__elements > max_elements) {
3964 if (!skb_is_nonlinear(skb)) {
3965
3966 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3967 max_elements, __elements, skb->len);
3968 return -E2BIG;
3969 }
3970
3971 rc = skb_linearize(skb);
3972 if (rc) {
3973 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3974 return rc;
3975 }
3976
3977 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3978
3979 goto check_layout;
3980 }
3981
3982 *elements = __elements;
3983
3984 if (push_ok) {
3985 *hdr = skb_push(skb, hdr_len);
3986 return hdr_len;
3987 }
3988
3989
3990 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3991 return -E2BIG;
3992 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
3993 if (!*hdr)
3994 return -ENOMEM;
3995
3996 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3997 return 0;
3998}
3999
4000static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
4001 struct sk_buff *curr_skb,
4002 struct qeth_hdr *curr_hdr)
4003{
4004 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
4005 struct qeth_hdr *prev_hdr = queue->prev_hdr;
4006
4007 if (!prev_hdr)
4008 return true;
4009
4010
4011 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
4012 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
4013
4014 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
4015 eth_hdr(curr_skb)->h_dest) &&
4016 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
4017 }
4018
4019 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
4020 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
4021}
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
4033 struct sk_buff *skb, struct qeth_hdr *hdr,
4034 unsigned int offset, unsigned int hd_len)
4035{
4036 struct qdio_buffer *buffer = buf->buffer;
4037 int element = buf->next_element_to_fill;
4038 int length = skb_headlen(skb) - offset;
4039 char *data = skb->data + offset;
4040 unsigned int elem_length, cnt;
4041 bool is_first_elem = true;
4042
4043 __skb_queue_tail(&buf->skb_list, skb);
4044
4045
4046 if (hd_len) {
4047 is_first_elem = false;
4048
4049 buffer->element[element].addr = virt_to_phys(hdr);
4050 buffer->element[element].length = hd_len;
4051 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4052
4053
4054 if ((void *)hdr != skb->data)
4055 __set_bit(element, buf->from_kmem_cache);
4056
4057 else if (length > 0 && !PAGE_ALIGNED(data) &&
4058 (data == (char *)hdr + hd_len))
4059 buffer->element[element].eflags |=
4060 SBAL_EFLAGS_CONTIGUOUS;
4061
4062 element++;
4063 }
4064
4065
4066 while (length > 0) {
4067 elem_length = min_t(unsigned int, length,
4068 PAGE_SIZE - offset_in_page(data));
4069
4070 buffer->element[element].addr = virt_to_phys(data);
4071 buffer->element[element].length = elem_length;
4072 length -= elem_length;
4073 if (is_first_elem) {
4074 is_first_elem = false;
4075 if (length || skb_is_nonlinear(skb))
4076
4077 buffer->element[element].eflags =
4078 SBAL_EFLAGS_FIRST_FRAG;
4079 else
4080 buffer->element[element].eflags = 0;
4081 } else {
4082 buffer->element[element].eflags =
4083 SBAL_EFLAGS_MIDDLE_FRAG;
4084 }
4085
4086 data += elem_length;
4087 element++;
4088 }
4089
4090
4091 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4092 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4093
4094 data = skb_frag_address(frag);
4095 length = skb_frag_size(frag);
4096 while (length > 0) {
4097 elem_length = min_t(unsigned int, length,
4098 PAGE_SIZE - offset_in_page(data));
4099
4100 buffer->element[element].addr = virt_to_phys(data);
4101 buffer->element[element].length = elem_length;
4102 buffer->element[element].eflags =
4103 SBAL_EFLAGS_MIDDLE_FRAG;
4104
4105 length -= elem_length;
4106 data += elem_length;
4107 element++;
4108 }
4109 }
4110
4111 if (buffer->element[element - 1].eflags)
4112 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4113 buf->next_element_to_fill = element;
4114 return element;
4115}
4116
4117static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4118 struct sk_buff *skb, unsigned int elements,
4119 struct qeth_hdr *hdr, unsigned int offset,
4120 unsigned int hd_len)
4121{
4122 unsigned int bytes = qdisc_pkt_len(skb);
4123 struct qeth_qdio_out_buffer *buffer;
4124 unsigned int next_element;
4125 struct netdev_queue *txq;
4126 bool stopped = false;
4127 bool flush;
4128
4129 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4130 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4131
4132
4133
4134
4135 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4136 return -EBUSY;
4137
4138 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4139
4140 if (flush ||
4141 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4142 if (buffer->next_element_to_fill > 0) {
4143 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4144 queue->bulk_count++;
4145 }
4146
4147 if (queue->bulk_count >= queue->bulk_max)
4148 flush = true;
4149
4150 if (flush)
4151 qeth_flush_queue(queue);
4152
4153 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4154 queue->bulk_count)];
4155
4156
4157 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4158 return -EBUSY;
4159 }
4160
4161 if (buffer->next_element_to_fill == 0 &&
4162 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4163
4164
4165
4166 QETH_TXQ_STAT_INC(queue, stopped);
4167 netif_tx_stop_queue(txq);
4168 stopped = true;
4169 }
4170
4171 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4172 buffer->bytes += bytes;
4173 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4174 queue->prev_hdr = hdr;
4175
4176 flush = __netdev_tx_sent_queue(txq, bytes,
4177 !stopped && netdev_xmit_more());
4178
4179 if (flush || next_element >= queue->max_elements) {
4180 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4181 queue->bulk_count++;
4182
4183 if (queue->bulk_count >= queue->bulk_max)
4184 flush = true;
4185
4186 if (flush)
4187 qeth_flush_queue(queue);
4188 }
4189
4190 if (stopped && !qeth_out_queue_is_full(queue))
4191 netif_tx_start_queue(txq);
4192 return 0;
4193}
4194
4195int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4196 struct sk_buff *skb, struct qeth_hdr *hdr,
4197 unsigned int offset, unsigned int hd_len,
4198 int elements_needed)
4199{
4200 unsigned int start_index = queue->next_buf_to_fill;
4201 struct qeth_qdio_out_buffer *buffer;
4202 unsigned int next_element;
4203 struct netdev_queue *txq;
4204 bool stopped = false;
4205 int flush_count = 0;
4206 int do_pack = 0;
4207 int rc = 0;
4208
4209 buffer = queue->bufs[queue->next_buf_to_fill];
4210
4211
4212
4213
4214 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4215 return -EBUSY;
4216
4217 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4218
4219
4220 qeth_switch_to_packing_if_needed(queue);
4221 if (queue->do_pack) {
4222 do_pack = 1;
4223
4224 if (buffer->next_element_to_fill + elements_needed >
4225 queue->max_elements) {
4226
4227 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4228 flush_count++;
4229 queue->next_buf_to_fill =
4230 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4231 buffer = queue->bufs[queue->next_buf_to_fill];
4232
4233
4234 if (atomic_read(&buffer->state) !=
4235 QETH_QDIO_BUF_EMPTY) {
4236 qeth_flush_buffers(queue, start_index,
4237 flush_count);
4238 rc = -EBUSY;
4239 goto out;
4240 }
4241 }
4242 }
4243
4244 if (buffer->next_element_to_fill == 0 &&
4245 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4246
4247
4248
4249 QETH_TXQ_STAT_INC(queue, stopped);
4250 netif_tx_stop_queue(txq);
4251 stopped = true;
4252 }
4253
4254 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4255 buffer->bytes += qdisc_pkt_len(skb);
4256 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4257
4258 if (queue->do_pack)
4259 QETH_TXQ_STAT_INC(queue, skbs_pack);
4260 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4261 flush_count++;
4262 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4263 queue->next_buf_to_fill =
4264 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4265 }
4266
4267 if (flush_count)
4268 qeth_flush_buffers(queue, start_index, flush_count);
4269
4270out:
4271 if (do_pack)
4272 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4273
4274 if (stopped && !qeth_out_queue_is_full(queue))
4275 netif_tx_start_queue(txq);
4276 return rc;
4277}
4278EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4279
4280static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4281 unsigned int payload_len, struct sk_buff *skb,
4282 unsigned int proto_len)
4283{
4284 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4285
4286 ext->hdr_tot_len = sizeof(*ext);
4287 ext->imb_hdr_no = 1;
4288 ext->hdr_type = 1;
4289 ext->hdr_version = 1;
4290 ext->hdr_len = 28;
4291 ext->payload_len = payload_len;
4292 ext->mss = skb_shinfo(skb)->gso_size;
4293 ext->dg_hdr_len = proto_len;
4294}
4295
4296int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4297 struct qeth_qdio_out_q *queue, __be16 proto,
4298 void (*fill_header)(struct qeth_qdio_out_q *queue,
4299 struct qeth_hdr *hdr, struct sk_buff *skb,
4300 __be16 proto, unsigned int data_len))
4301{
4302 unsigned int proto_len, hw_hdr_len;
4303 unsigned int frame_len = skb->len;
4304 bool is_tso = skb_is_gso(skb);
4305 unsigned int data_offset = 0;
4306 struct qeth_hdr *hdr = NULL;
4307 unsigned int hd_len = 0;
4308 unsigned int elements;
4309 int push_len, rc;
4310
4311 if (is_tso) {
4312 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4313 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4314 } else {
4315 hw_hdr_len = sizeof(struct qeth_hdr);
4316 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4317 }
4318
4319 rc = skb_cow_head(skb, hw_hdr_len);
4320 if (rc)
4321 return rc;
4322
4323 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4324 &elements);
4325 if (push_len < 0)
4326 return push_len;
4327 if (is_tso || !push_len) {
4328
4329 hd_len = hw_hdr_len + proto_len;
4330 data_offset = push_len + proto_len;
4331 }
4332 memset(hdr, 0, hw_hdr_len);
4333 fill_header(queue, hdr, skb, proto, frame_len);
4334 if (is_tso)
4335 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4336 frame_len - proto_len, skb, proto_len);
4337
4338 if (IS_IQD(card)) {
4339 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4340 hd_len);
4341 } else {
4342
4343 skb_orphan(skb);
4344 spin_lock(&queue->lock);
4345 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4346 hd_len, elements);
4347 spin_unlock(&queue->lock);
4348 }
4349
4350 if (rc && !push_len)
4351 kmem_cache_free(qeth_core_header_cache, hdr);
4352
4353 return rc;
4354}
4355EXPORT_SYMBOL_GPL(qeth_xmit);
4356
4357static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4358 struct qeth_reply *reply, unsigned long data)
4359{
4360 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4361 struct qeth_ipacmd_setadpparms *setparms;
4362
4363 QETH_CARD_TEXT(card, 4, "prmadpcb");
4364
4365 setparms = &(cmd->data.setadapterparms);
4366 if (qeth_setadpparms_inspect_rc(cmd)) {
4367 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4368 setparms->data.mode = SET_PROMISC_MODE_OFF;
4369 }
4370 card->info.promisc_mode = setparms->data.mode;
4371 return (cmd->hdr.return_code) ? -EIO : 0;
4372}
4373
4374void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4375{
4376 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4377 SET_PROMISC_MODE_OFF;
4378 struct qeth_cmd_buffer *iob;
4379 struct qeth_ipa_cmd *cmd;
4380
4381 QETH_CARD_TEXT(card, 4, "setprom");
4382 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4383
4384 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4385 SETADP_DATA_SIZEOF(mode));
4386 if (!iob)
4387 return;
4388 cmd = __ipa_cmd(iob);
4389 cmd->data.setadapterparms.data.mode = mode;
4390 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4391}
4392EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4393
4394static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4395 struct qeth_reply *reply, unsigned long data)
4396{
4397 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4398 struct qeth_ipacmd_setadpparms *adp_cmd;
4399
4400 QETH_CARD_TEXT(card, 4, "chgmaccb");
4401 if (qeth_setadpparms_inspect_rc(cmd))
4402 return -EIO;
4403
4404 adp_cmd = &cmd->data.setadapterparms;
4405 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4406 return -EADDRNOTAVAIL;
4407
4408 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4409 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4410 return -EADDRNOTAVAIL;
4411
4412 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4413 return 0;
4414}
4415
4416int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4417{
4418 int rc;
4419 struct qeth_cmd_buffer *iob;
4420 struct qeth_ipa_cmd *cmd;
4421
4422 QETH_CARD_TEXT(card, 4, "chgmac");
4423
4424 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4425 SETADP_DATA_SIZEOF(change_addr));
4426 if (!iob)
4427 return -ENOMEM;
4428 cmd = __ipa_cmd(iob);
4429 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4430 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4431 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4432 card->dev->dev_addr);
4433 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4434 NULL);
4435 return rc;
4436}
4437EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4438
4439static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4440 struct qeth_reply *reply, unsigned long data)
4441{
4442 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4443 struct qeth_set_access_ctrl *access_ctrl_req;
4444
4445 QETH_CARD_TEXT(card, 4, "setaccb");
4446
4447 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4448 QETH_CARD_TEXT_(card, 2, "rc=%d",
4449 cmd->data.setadapterparms.hdr.return_code);
4450 if (cmd->data.setadapterparms.hdr.return_code !=
4451 SET_ACCESS_CTRL_RC_SUCCESS)
4452 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4453 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4454 cmd->data.setadapterparms.hdr.return_code);
4455 switch (qeth_setadpparms_inspect_rc(cmd)) {
4456 case SET_ACCESS_CTRL_RC_SUCCESS:
4457 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4458 dev_info(&card->gdev->dev,
4459 "QDIO data connection isolation is deactivated\n");
4460 else
4461 dev_info(&card->gdev->dev,
4462 "QDIO data connection isolation is activated\n");
4463 return 0;
4464 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4465 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4466 CARD_DEVID(card));
4467 return 0;
4468 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4469 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4470 CARD_DEVID(card));
4471 return 0;
4472 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4473 dev_err(&card->gdev->dev, "Adapter does not "
4474 "support QDIO data connection isolation\n");
4475 return -EOPNOTSUPP;
4476 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4477 dev_err(&card->gdev->dev,
4478 "Adapter is dedicated. "
4479 "QDIO data connection isolation not supported\n");
4480 return -EOPNOTSUPP;
4481 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4482 dev_err(&card->gdev->dev,
4483 "TSO does not permit QDIO data connection isolation\n");
4484 return -EPERM;
4485 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4486 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4487 "support reflective relay mode\n");
4488 return -EOPNOTSUPP;
4489 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4490 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4491 "enabled at the adjacent switch port");
4492 return -EREMOTEIO;
4493 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4494 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4495 "at the adjacent switch failed\n");
4496
4497 return 0;
4498 default:
4499 return -EIO;
4500 }
4501}
4502
4503int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4504 enum qeth_ipa_isolation_modes mode)
4505{
4506 int rc;
4507 struct qeth_cmd_buffer *iob;
4508 struct qeth_ipa_cmd *cmd;
4509 struct qeth_set_access_ctrl *access_ctrl_req;
4510
4511 QETH_CARD_TEXT(card, 4, "setacctl");
4512
4513 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4514 dev_err(&card->gdev->dev,
4515 "Adapter does not support QDIO data connection isolation\n");
4516 return -EOPNOTSUPP;
4517 }
4518
4519 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4520 SETADP_DATA_SIZEOF(set_access_ctrl));
4521 if (!iob)
4522 return -ENOMEM;
4523 cmd = __ipa_cmd(iob);
4524 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4525 access_ctrl_req->subcmd_code = mode;
4526
4527 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4528 NULL);
4529 if (rc) {
4530 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4531 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4532 rc, CARD_DEVID(card));
4533 }
4534
4535 return rc;
4536}
4537
4538void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4539{
4540 struct qeth_card *card;
4541
4542 card = dev->ml_priv;
4543 QETH_CARD_TEXT(card, 4, "txtimeo");
4544 qeth_schedule_recovery(card);
4545}
4546EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4547
4548static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4549{
4550 struct qeth_card *card = dev->ml_priv;
4551 int rc = 0;
4552
4553 switch (regnum) {
4554 case MII_BMCR:
4555 rc = BMCR_FULLDPLX;
4556 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4557 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4558 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4559 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4560 rc |= BMCR_SPEED100;
4561 break;
4562 case MII_BMSR:
4563 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4564 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4565 BMSR_100BASE4;
4566 break;
4567 case MII_PHYSID1:
4568 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4569 dev->dev_addr[2];
4570 rc = (rc >> 5) & 0xFFFF;
4571 break;
4572 case MII_PHYSID2:
4573 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4574 break;
4575 case MII_ADVERTISE:
4576 rc = ADVERTISE_ALL;
4577 break;
4578 case MII_LPA:
4579 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4580 LPA_100BASE4 | LPA_LPACK;
4581 break;
4582 case MII_EXPANSION:
4583 break;
4584 case MII_DCOUNTER:
4585 break;
4586 case MII_FCSCOUNTER:
4587 break;
4588 case MII_NWAYTEST:
4589 break;
4590 case MII_RERRCOUNTER:
4591 rc = card->stats.rx_length_errors +
4592 card->stats.rx_frame_errors +
4593 card->stats.rx_fifo_errors;
4594 break;
4595 case MII_SREVISION:
4596 break;
4597 case MII_RESV1:
4598 break;
4599 case MII_LBRERROR:
4600 break;
4601 case MII_PHYADDR:
4602 break;
4603 case MII_RESV2:
4604 break;
4605 case MII_TPISTATUS:
4606 break;
4607 case MII_NCONFIG:
4608 break;
4609 default:
4610 break;
4611 }
4612 return rc;
4613}
4614
4615static int qeth_snmp_command_cb(struct qeth_card *card,
4616 struct qeth_reply *reply, unsigned long data)
4617{
4618 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4619 struct qeth_arp_query_info *qinfo = reply->param;
4620 struct qeth_ipacmd_setadpparms *adp_cmd;
4621 unsigned int data_len;
4622 void *snmp_data;
4623
4624 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4625
4626 if (cmd->hdr.return_code) {
4627 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4628 return -EIO;
4629 }
4630 if (cmd->data.setadapterparms.hdr.return_code) {
4631 cmd->hdr.return_code =
4632 cmd->data.setadapterparms.hdr.return_code;
4633 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4634 return -EIO;
4635 }
4636
4637 adp_cmd = &cmd->data.setadapterparms;
4638 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4639 if (adp_cmd->hdr.seq_no == 1) {
4640 snmp_data = &adp_cmd->data.snmp;
4641 } else {
4642 snmp_data = &adp_cmd->data.snmp.request;
4643 data_len -= offsetof(struct qeth_snmp_cmd, request);
4644 }
4645
4646
4647 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4648 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4649 return -ENOSPC;
4650 }
4651 QETH_CARD_TEXT_(card, 4, "snore%i",
4652 cmd->data.setadapterparms.hdr.used_total);
4653 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4654 cmd->data.setadapterparms.hdr.seq_no);
4655
4656 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4657 qinfo->udata_offset += data_len;
4658
4659 if (cmd->data.setadapterparms.hdr.seq_no <
4660 cmd->data.setadapterparms.hdr.used_total)
4661 return 1;
4662 return 0;
4663}
4664
4665static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4666{
4667 struct qeth_snmp_ureq __user *ureq;
4668 struct qeth_cmd_buffer *iob;
4669 unsigned int req_len;
4670 struct qeth_arp_query_info qinfo = {0, };
4671 int rc = 0;
4672
4673 QETH_CARD_TEXT(card, 3, "snmpcmd");
4674
4675 if (IS_VM_NIC(card))
4676 return -EOPNOTSUPP;
4677
4678 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4679 IS_LAYER3(card))
4680 return -EOPNOTSUPP;
4681
4682 ureq = (struct qeth_snmp_ureq __user *) udata;
4683 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4684 get_user(req_len, &ureq->hdr.req_len))
4685 return -EFAULT;
4686
4687
4688 if (req_len > QETH_BUFSIZE)
4689 return -EINVAL;
4690
4691 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4692 if (!iob)
4693 return -ENOMEM;
4694
4695 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4696 &ureq->cmd, req_len)) {
4697 qeth_put_cmd(iob);
4698 return -EFAULT;
4699 }
4700
4701 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4702 if (!qinfo.udata) {
4703 qeth_put_cmd(iob);
4704 return -ENOMEM;
4705 }
4706 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4707
4708 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4709 if (rc)
4710 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4711 CARD_DEVID(card), rc);
4712 else {
4713 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4714 rc = -EFAULT;
4715 }
4716
4717 kfree(qinfo.udata);
4718 return rc;
4719}
4720
4721static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4722 struct qeth_reply *reply,
4723 unsigned long data)
4724{
4725 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4726 struct qeth_qoat_priv *priv = reply->param;
4727 int resdatalen;
4728
4729 QETH_CARD_TEXT(card, 3, "qoatcb");
4730 if (qeth_setadpparms_inspect_rc(cmd))
4731 return -EIO;
4732
4733 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4734
4735 if (resdatalen > (priv->buffer_len - priv->response_len))
4736 return -ENOSPC;
4737
4738 memcpy(priv->buffer + priv->response_len,
4739 &cmd->data.setadapterparms.hdr, resdatalen);
4740 priv->response_len += resdatalen;
4741
4742 if (cmd->data.setadapterparms.hdr.seq_no <
4743 cmd->data.setadapterparms.hdr.used_total)
4744 return 1;
4745 return 0;
4746}
4747
4748static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4749{
4750 int rc = 0;
4751 struct qeth_cmd_buffer *iob;
4752 struct qeth_ipa_cmd *cmd;
4753 struct qeth_query_oat *oat_req;
4754 struct qeth_query_oat_data oat_data;
4755 struct qeth_qoat_priv priv;
4756 void __user *tmp;
4757
4758 QETH_CARD_TEXT(card, 3, "qoatcmd");
4759
4760 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4761 return -EOPNOTSUPP;
4762
4763 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4764 return -EFAULT;
4765
4766 priv.buffer_len = oat_data.buffer_len;
4767 priv.response_len = 0;
4768 priv.buffer = vzalloc(oat_data.buffer_len);
4769 if (!priv.buffer)
4770 return -ENOMEM;
4771
4772 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4773 SETADP_DATA_SIZEOF(query_oat));
4774 if (!iob) {
4775 rc = -ENOMEM;
4776 goto out_free;
4777 }
4778 cmd = __ipa_cmd(iob);
4779 oat_req = &cmd->data.setadapterparms.data.query_oat;
4780 oat_req->subcmd_code = oat_data.command;
4781
4782 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4783 if (!rc) {
4784 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4785 u64_to_user_ptr(oat_data.ptr);
4786 oat_data.response_len = priv.response_len;
4787
4788 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4789 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4790 rc = -EFAULT;
4791 }
4792
4793out_free:
4794 vfree(priv.buffer);
4795 return rc;
4796}
4797
4798static int qeth_query_card_info_cb(struct qeth_card *card,
4799 struct qeth_reply *reply, unsigned long data)
4800{
4801 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4802 struct qeth_link_info *link_info = reply->param;
4803 struct qeth_query_card_info *card_info;
4804
4805 QETH_CARD_TEXT(card, 2, "qcrdincb");
4806 if (qeth_setadpparms_inspect_rc(cmd))
4807 return -EIO;
4808
4809 card_info = &cmd->data.setadapterparms.data.card_info;
4810 netdev_dbg(card->dev,
4811 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4812 card_info->card_type, card_info->port_mode,
4813 card_info->port_speed);
4814
4815 switch (card_info->port_mode) {
4816 case CARD_INFO_PORTM_FULLDUPLEX:
4817 link_info->duplex = DUPLEX_FULL;
4818 break;
4819 case CARD_INFO_PORTM_HALFDUPLEX:
4820 link_info->duplex = DUPLEX_HALF;
4821 break;
4822 default:
4823 link_info->duplex = DUPLEX_UNKNOWN;
4824 }
4825
4826 switch (card_info->card_type) {
4827 case CARD_INFO_TYPE_1G_COPPER_A:
4828 case CARD_INFO_TYPE_1G_COPPER_B:
4829 link_info->speed = SPEED_1000;
4830 link_info->port = PORT_TP;
4831 break;
4832 case CARD_INFO_TYPE_1G_FIBRE_A:
4833 case CARD_INFO_TYPE_1G_FIBRE_B:
4834 link_info->speed = SPEED_1000;
4835 link_info->port = PORT_FIBRE;
4836 break;
4837 case CARD_INFO_TYPE_10G_FIBRE_A:
4838 case CARD_INFO_TYPE_10G_FIBRE_B:
4839 link_info->speed = SPEED_10000;
4840 link_info->port = PORT_FIBRE;
4841 break;
4842 default:
4843 switch (card_info->port_speed) {
4844 case CARD_INFO_PORTS_10M:
4845 link_info->speed = SPEED_10;
4846 break;
4847 case CARD_INFO_PORTS_100M:
4848 link_info->speed = SPEED_100;
4849 break;
4850 case CARD_INFO_PORTS_1G:
4851 link_info->speed = SPEED_1000;
4852 break;
4853 case CARD_INFO_PORTS_10G:
4854 link_info->speed = SPEED_10000;
4855 break;
4856 case CARD_INFO_PORTS_25G:
4857 link_info->speed = SPEED_25000;
4858 break;
4859 default:
4860 link_info->speed = SPEED_UNKNOWN;
4861 }
4862
4863 link_info->port = PORT_OTHER;
4864 }
4865
4866 return 0;
4867}
4868
4869int qeth_query_card_info(struct qeth_card *card,
4870 struct qeth_link_info *link_info)
4871{
4872 struct qeth_cmd_buffer *iob;
4873
4874 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4875 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4876 return -EOPNOTSUPP;
4877 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4878 if (!iob)
4879 return -ENOMEM;
4880
4881 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
4882}
4883
4884static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4885 struct qeth_reply *reply_priv,
4886 unsigned long data)
4887{
4888 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4889 struct qeth_link_info *link_info = reply_priv->param;
4890 struct qeth_query_oat_physical_if *phys_if;
4891 struct qeth_query_oat_reply *reply;
4892
4893 if (qeth_setadpparms_inspect_rc(cmd))
4894 return -EIO;
4895
4896
4897 if (cmd->data.setadapterparms.hdr.used_total > 1)
4898 return -EINVAL;
4899
4900
4901 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4902 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4903 reply->length < sizeof(*reply))
4904 return -EINVAL;
4905
4906 phys_if = &reply->phys_if;
4907
4908 switch (phys_if->speed_duplex) {
4909 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4910 link_info->speed = SPEED_10;
4911 link_info->duplex = DUPLEX_HALF;
4912 break;
4913 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4914 link_info->speed = SPEED_10;
4915 link_info->duplex = DUPLEX_FULL;
4916 break;
4917 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4918 link_info->speed = SPEED_100;
4919 link_info->duplex = DUPLEX_HALF;
4920 break;
4921 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4922 link_info->speed = SPEED_100;
4923 link_info->duplex = DUPLEX_FULL;
4924 break;
4925 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4926 link_info->speed = SPEED_1000;
4927 link_info->duplex = DUPLEX_HALF;
4928 break;
4929 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4930 link_info->speed = SPEED_1000;
4931 link_info->duplex = DUPLEX_FULL;
4932 break;
4933 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4934 link_info->speed = SPEED_10000;
4935 link_info->duplex = DUPLEX_FULL;
4936 break;
4937 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4938 link_info->speed = SPEED_25000;
4939 link_info->duplex = DUPLEX_FULL;
4940 break;
4941 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4942 default:
4943 link_info->speed = SPEED_UNKNOWN;
4944 link_info->duplex = DUPLEX_UNKNOWN;
4945 break;
4946 }
4947
4948 switch (phys_if->media_type) {
4949 case QETH_QOAT_PHYS_MEDIA_COPPER:
4950 link_info->port = PORT_TP;
4951 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4952 break;
4953 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
4954 link_info->port = PORT_FIBRE;
4955 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4956 break;
4957 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4958 link_info->port = PORT_FIBRE;
4959 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
4960 break;
4961 default:
4962 link_info->port = PORT_OTHER;
4963 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4964 break;
4965 }
4966
4967 return 0;
4968}
4969
4970static void qeth_init_link_info(struct qeth_card *card)
4971{
4972 card->info.link_info.duplex = DUPLEX_FULL;
4973
4974 if (IS_IQD(card) || IS_VM_NIC(card)) {
4975 card->info.link_info.speed = SPEED_10000;
4976 card->info.link_info.port = PORT_FIBRE;
4977 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4978 } else {
4979 switch (card->info.link_type) {
4980 case QETH_LINK_TYPE_FAST_ETH:
4981 case QETH_LINK_TYPE_LANE_ETH100:
4982 card->info.link_info.speed = SPEED_100;
4983 card->info.link_info.port = PORT_TP;
4984 break;
4985 case QETH_LINK_TYPE_GBIT_ETH:
4986 case QETH_LINK_TYPE_LANE_ETH1000:
4987 card->info.link_info.speed = SPEED_1000;
4988 card->info.link_info.port = PORT_FIBRE;
4989 break;
4990 case QETH_LINK_TYPE_10GBIT_ETH:
4991 card->info.link_info.speed = SPEED_10000;
4992 card->info.link_info.port = PORT_FIBRE;
4993 break;
4994 case QETH_LINK_TYPE_25GBIT_ETH:
4995 card->info.link_info.speed = SPEED_25000;
4996 card->info.link_info.port = PORT_FIBRE;
4997 break;
4998 default:
4999 dev_info(&card->gdev->dev, "Unknown link type %x\n",
5000 card->info.link_type);
5001 card->info.link_info.speed = SPEED_UNKNOWN;
5002 card->info.link_info.port = PORT_OTHER;
5003 }
5004
5005 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
5006 }
5007
5008
5009 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
5010 struct qeth_link_info link_info;
5011 struct qeth_cmd_buffer *iob;
5012
5013 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
5014 SETADP_DATA_SIZEOF(query_oat));
5015 if (iob) {
5016 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
5017 struct qeth_query_oat *oat_req;
5018
5019 oat_req = &cmd->data.setadapterparms.data.query_oat;
5020 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
5021
5022 if (!qeth_send_ipa_cmd(card, iob,
5023 qeth_init_link_info_oat_cb,
5024 &link_info)) {
5025 if (link_info.speed != SPEED_UNKNOWN)
5026 card->info.link_info.speed = link_info.speed;
5027 if (link_info.duplex != DUPLEX_UNKNOWN)
5028 card->info.link_info.duplex = link_info.duplex;
5029 if (link_info.port != PORT_OTHER)
5030 card->info.link_info.port = link_info.port;
5031 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
5032 card->info.link_info.link_mode = link_info.link_mode;
5033 }
5034 }
5035 }
5036}
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046int qeth_vm_request_mac(struct qeth_card *card)
5047{
5048 struct diag26c_mac_resp *response;
5049 struct diag26c_mac_req *request;
5050 int rc;
5051
5052 QETH_CARD_TEXT(card, 2, "vmreqmac");
5053
5054 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5055 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5056 if (!request || !response) {
5057 rc = -ENOMEM;
5058 goto out;
5059 }
5060
5061 request->resp_buf_len = sizeof(*response);
5062 request->resp_version = DIAG26C_VERSION2;
5063 request->op_code = DIAG26C_GET_MAC;
5064 request->devno = card->info.ddev_devno;
5065
5066 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5067 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
5068 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5069 if (rc)
5070 goto out;
5071 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
5072
5073 if (request->resp_buf_len < sizeof(*response) ||
5074 response->version != request->resp_version) {
5075 rc = -EIO;
5076 QETH_CARD_TEXT(card, 2, "badresp");
5077 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5078 sizeof(request->resp_buf_len));
5079 } else if (!is_valid_ether_addr(response->mac)) {
5080 rc = -EINVAL;
5081 QETH_CARD_TEXT(card, 2, "badmac");
5082 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
5083 } else {
5084 ether_addr_copy(card->dev->dev_addr, response->mac);
5085 }
5086
5087out:
5088 kfree(response);
5089 kfree(request);
5090 return rc;
5091}
5092EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5093
5094static void qeth_determine_capabilities(struct qeth_card *card)
5095{
5096 struct qeth_channel *channel = &card->data;
5097 struct ccw_device *ddev = channel->ccwdev;
5098 int rc;
5099 int ddev_offline = 0;
5100
5101 QETH_CARD_TEXT(card, 2, "detcapab");
5102 if (!ddev->online) {
5103 ddev_offline = 1;
5104 rc = qeth_start_channel(channel);
5105 if (rc) {
5106 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5107 goto out;
5108 }
5109 }
5110
5111 rc = qeth_read_conf_data(card);
5112 if (rc) {
5113 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5114 CARD_DEVID(card), rc);
5115 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5116 goto out_offline;
5117 }
5118
5119 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5120 if (rc)
5121 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5122
5123 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5124 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5125 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5126 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5127 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5128 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5129 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5130 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5131 dev_info(&card->gdev->dev,
5132 "Completion Queueing supported\n");
5133 } else {
5134 card->options.cq = QETH_CQ_NOTAVAILABLE;
5135 }
5136
5137out_offline:
5138 if (ddev_offline == 1)
5139 qeth_stop_channel(channel);
5140out:
5141 return;
5142}
5143
5144static void qeth_read_ccw_conf_data(struct qeth_card *card)
5145{
5146 struct qeth_card_info *info = &card->info;
5147 struct ccw_device *cdev = CARD_DDEV(card);
5148 struct ccw_dev_id dev_id;
5149
5150 QETH_CARD_TEXT(card, 2, "ccwconfd");
5151 ccw_device_get_id(cdev, &dev_id);
5152
5153 info->ddev_devno = dev_id.devno;
5154 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5155 !ccw_device_get_iid(cdev, &info->iid) &&
5156 !ccw_device_get_chid(cdev, 0, &info->chid);
5157 info->ssid = dev_id.ssid;
5158
5159 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5160 info->chid, info->chpid);
5161
5162 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5163 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5164 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5165 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5166 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5167 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5168 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5169}
5170
5171static int qeth_qdio_establish(struct qeth_card *card)
5172{
5173 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5174 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5175 struct qeth_qib_parms *qib_parms = NULL;
5176 struct qdio_initialize init_data;
5177 unsigned int i;
5178 int rc = 0;
5179
5180 QETH_CARD_TEXT(card, 2, "qdioest");
5181
5182 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5183 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5184 if (!qib_parms)
5185 return -ENOMEM;
5186
5187 qeth_fill_qib_parms(card, qib_parms);
5188 }
5189
5190 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5191 if (card->options.cq == QETH_CQ_ENABLED)
5192 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5193
5194 for (i = 0; i < card->qdio.no_out_queues; i++)
5195 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5196
5197 memset(&init_data, 0, sizeof(struct qdio_initialize));
5198 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5199 QDIO_QETH_QFMT;
5200 init_data.qib_param_field_format = 0;
5201 init_data.qib_param_field = (void *)qib_parms;
5202 init_data.no_input_qs = card->qdio.no_in_queues;
5203 init_data.no_output_qs = card->qdio.no_out_queues;
5204 init_data.input_handler = qeth_qdio_input_handler;
5205 init_data.output_handler = qeth_qdio_output_handler;
5206 init_data.irq_poll = qeth_qdio_poll;
5207 init_data.int_parm = (unsigned long) card;
5208 init_data.input_sbal_addr_array = in_sbal_ptrs;
5209 init_data.output_sbal_addr_array = out_sbal_ptrs;
5210
5211 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5212 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5213 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5214 init_data.no_output_qs);
5215 if (rc) {
5216 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5217 goto out;
5218 }
5219 rc = qdio_establish(CARD_DDEV(card), &init_data);
5220 if (rc) {
5221 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5222 qdio_free(CARD_DDEV(card));
5223 }
5224 }
5225
5226 switch (card->options.cq) {
5227 case QETH_CQ_ENABLED:
5228 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5229 break;
5230 case QETH_CQ_DISABLED:
5231 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5232 break;
5233 default:
5234 break;
5235 }
5236
5237out:
5238 kfree(qib_parms);
5239 return rc;
5240}
5241
5242static void qeth_core_free_card(struct qeth_card *card)
5243{
5244 QETH_CARD_TEXT(card, 2, "freecrd");
5245
5246 unregister_service_level(&card->qeth_service_level);
5247 debugfs_remove_recursive(card->debugfs);
5248 qeth_put_cmd(card->read_cmd);
5249 destroy_workqueue(card->event_wq);
5250 dev_set_drvdata(&card->gdev->dev, NULL);
5251 kfree(card);
5252}
5253
5254static void qeth_trace_features(struct qeth_card *card)
5255{
5256 QETH_CARD_TEXT(card, 2, "features");
5257 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5258 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5259 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5260 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5261 sizeof(card->info.diagass_support));
5262}
5263
5264static struct ccw_device_id qeth_ids[] = {
5265 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5266 .driver_info = QETH_CARD_TYPE_OSD},
5267 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5268 .driver_info = QETH_CARD_TYPE_IQD},
5269#ifdef CONFIG_QETH_OSN
5270 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5271 .driver_info = QETH_CARD_TYPE_OSN},
5272#endif
5273 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5274 .driver_info = QETH_CARD_TYPE_OSM},
5275#ifdef CONFIG_QETH_OSX
5276 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5277 .driver_info = QETH_CARD_TYPE_OSX},
5278#endif
5279 {},
5280};
5281MODULE_DEVICE_TABLE(ccw, qeth_ids);
5282
5283static struct ccw_driver qeth_ccw_driver = {
5284 .driver = {
5285 .owner = THIS_MODULE,
5286 .name = "qeth",
5287 },
5288 .ids = qeth_ids,
5289 .probe = ccwgroup_probe_ccwdev,
5290 .remove = ccwgroup_remove_ccwdev,
5291};
5292
5293static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5294{
5295 int retries = 3;
5296 int rc;
5297
5298 QETH_CARD_TEXT(card, 2, "hrdsetup");
5299 atomic_set(&card->force_alloc_skb, 0);
5300 rc = qeth_update_from_chp_desc(card);
5301 if (rc)
5302 return rc;
5303retry:
5304 if (retries < 3)
5305 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5306 CARD_DEVID(card));
5307 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5308 qeth_stop_channel(&card->data);
5309 qeth_stop_channel(&card->write);
5310 qeth_stop_channel(&card->read);
5311 qdio_free(CARD_DDEV(card));
5312
5313 rc = qeth_start_channel(&card->read);
5314 if (rc)
5315 goto retriable;
5316 rc = qeth_start_channel(&card->write);
5317 if (rc)
5318 goto retriable;
5319 rc = qeth_start_channel(&card->data);
5320 if (rc)
5321 goto retriable;
5322retriable:
5323 if (rc == -ERESTARTSYS) {
5324 QETH_CARD_TEXT(card, 2, "break1");
5325 return rc;
5326 } else if (rc) {
5327 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5328 if (--retries < 0)
5329 goto out;
5330 else
5331 goto retry;
5332 }
5333
5334 qeth_determine_capabilities(card);
5335 qeth_read_ccw_conf_data(card);
5336 qeth_idx_init(card);
5337
5338 rc = qeth_idx_activate_read_channel(card);
5339 if (rc == -EINTR) {
5340 QETH_CARD_TEXT(card, 2, "break2");
5341 return rc;
5342 } else if (rc) {
5343 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5344 if (--retries < 0)
5345 goto out;
5346 else
5347 goto retry;
5348 }
5349
5350 rc = qeth_idx_activate_write_channel(card);
5351 if (rc == -EINTR) {
5352 QETH_CARD_TEXT(card, 2, "break3");
5353 return rc;
5354 } else if (rc) {
5355 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5356 if (--retries < 0)
5357 goto out;
5358 else
5359 goto retry;
5360 }
5361 card->read_or_write_problem = 0;
5362 rc = qeth_mpc_initialize(card);
5363 if (rc) {
5364 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5365 goto out;
5366 }
5367
5368 rc = qeth_send_startlan(card);
5369 if (rc) {
5370 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5371 if (rc == -ENETDOWN) {
5372 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5373 *carrier_ok = false;
5374 } else {
5375 goto out;
5376 }
5377 } else {
5378 *carrier_ok = true;
5379 }
5380
5381 card->options.ipa4.supported = 0;
5382 card->options.ipa6.supported = 0;
5383 card->options.adp.supported = 0;
5384 card->options.sbp.supported_funcs = 0;
5385 card->info.diagass_support = 0;
5386 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5387 if (rc == -ENOMEM)
5388 goto out;
5389 if (qeth_is_supported(card, IPA_IPV6)) {
5390 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5391 if (rc == -ENOMEM)
5392 goto out;
5393 }
5394 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5395 rc = qeth_query_setadapterparms(card);
5396 if (rc < 0) {
5397 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5398 goto out;
5399 }
5400 }
5401 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5402 rc = qeth_query_setdiagass(card);
5403 if (rc)
5404 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5405 }
5406
5407 qeth_trace_features(card);
5408
5409 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5410 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5411 card->info.hwtrap = 0;
5412
5413 if (card->options.isolation != ISOLATION_MODE_NONE) {
5414 rc = qeth_setadpparms_set_access_ctrl(card,
5415 card->options.isolation);
5416 if (rc)
5417 goto out;
5418 }
5419
5420 qeth_init_link_info(card);
5421
5422 rc = qeth_init_qdio_queues(card);
5423 if (rc) {
5424 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5425 goto out;
5426 }
5427
5428 return 0;
5429out:
5430 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5431 "an error on the device\n");
5432 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5433 CARD_DEVID(card), rc);
5434 return rc;
5435}
5436
5437static int qeth_set_online(struct qeth_card *card,
5438 const struct qeth_discipline *disc)
5439{
5440 bool carrier_ok;
5441 int rc;
5442
5443 mutex_lock(&card->conf_mutex);
5444 QETH_CARD_TEXT(card, 2, "setonlin");
5445
5446 rc = qeth_hardsetup_card(card, &carrier_ok);
5447 if (rc) {
5448 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5449 rc = -ENODEV;
5450 goto err_hardsetup;
5451 }
5452
5453 qeth_print_status_message(card);
5454
5455 if (card->dev->reg_state != NETREG_REGISTERED)
5456
5457 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5458
5459 rc = disc->set_online(card, carrier_ok);
5460 if (rc)
5461 goto err_online;
5462
5463
5464 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5465
5466 mutex_unlock(&card->conf_mutex);
5467 return 0;
5468
5469err_online:
5470err_hardsetup:
5471 qeth_qdio_clear_card(card, 0);
5472 qeth_clear_working_pool_list(card);
5473 qeth_flush_local_addrs(card);
5474
5475 qeth_stop_channel(&card->data);
5476 qeth_stop_channel(&card->write);
5477 qeth_stop_channel(&card->read);
5478 qdio_free(CARD_DDEV(card));
5479
5480 mutex_unlock(&card->conf_mutex);
5481 return rc;
5482}
5483
5484int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5485 bool resetting)
5486{
5487 int rc, rc2, rc3;
5488
5489 mutex_lock(&card->conf_mutex);
5490 QETH_CARD_TEXT(card, 3, "setoffl");
5491
5492 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5493 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5494 card->info.hwtrap = 1;
5495 }
5496
5497
5498 qeth_clear_ipacmd_list(card);
5499
5500 rtnl_lock();
5501 card->info.open_when_online = card->dev->flags & IFF_UP;
5502 dev_close(card->dev);
5503 netif_device_detach(card->dev);
5504 netif_carrier_off(card->dev);
5505 rtnl_unlock();
5506
5507 cancel_work_sync(&card->rx_mode_work);
5508
5509 disc->set_offline(card);
5510
5511 qeth_qdio_clear_card(card, 0);
5512 qeth_drain_output_queues(card);
5513 qeth_clear_working_pool_list(card);
5514 qeth_flush_local_addrs(card);
5515 card->info.promisc_mode = 0;
5516
5517 rc = qeth_stop_channel(&card->data);
5518 rc2 = qeth_stop_channel(&card->write);
5519 rc3 = qeth_stop_channel(&card->read);
5520 if (!rc)
5521 rc = (rc2) ? rc2 : rc3;
5522 if (rc)
5523 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5524 qdio_free(CARD_DDEV(card));
5525
5526
5527 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5528
5529 mutex_unlock(&card->conf_mutex);
5530 return 0;
5531}
5532EXPORT_SYMBOL_GPL(qeth_set_offline);
5533
5534static int qeth_do_reset(void *data)
5535{
5536 const struct qeth_discipline *disc;
5537 struct qeth_card *card = data;
5538 int rc;
5539
5540
5541 disc = card->discipline;
5542
5543 QETH_CARD_TEXT(card, 2, "recover1");
5544 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5545 return 0;
5546 QETH_CARD_TEXT(card, 2, "recover2");
5547 dev_warn(&card->gdev->dev,
5548 "A recovery process has been started for the device\n");
5549
5550 qeth_set_offline(card, disc, true);
5551 rc = qeth_set_online(card, disc);
5552 if (!rc) {
5553 dev_info(&card->gdev->dev,
5554 "Device successfully recovered!\n");
5555 } else {
5556 ccwgroup_set_offline(card->gdev);
5557 dev_warn(&card->gdev->dev,
5558 "The qeth device driver failed to recover an error on the device\n");
5559 }
5560 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5561 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5562 return 0;
5563}
5564
5565#if IS_ENABLED(CONFIG_QETH_L3)
5566static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5567 struct qeth_hdr *hdr)
5568{
5569 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5570 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5571 struct net_device *dev = skb->dev;
5572
5573 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5574 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5575 "FAKELL", skb->len);
5576 return;
5577 }
5578
5579 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5580 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5581 ETH_P_IP;
5582 unsigned char tg_addr[ETH_ALEN];
5583
5584 skb_reset_network_header(skb);
5585 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5586 case QETH_CAST_MULTICAST:
5587 if (prot == ETH_P_IP)
5588 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5589 else
5590 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5591 QETH_CARD_STAT_INC(card, rx_multicast);
5592 break;
5593 case QETH_CAST_BROADCAST:
5594 ether_addr_copy(tg_addr, dev->broadcast);
5595 QETH_CARD_STAT_INC(card, rx_multicast);
5596 break;
5597 default:
5598 if (card->options.sniffer)
5599 skb->pkt_type = PACKET_OTHERHOST;
5600 ether_addr_copy(tg_addr, dev->dev_addr);
5601 }
5602
5603 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5604 dev_hard_header(skb, dev, prot, tg_addr,
5605 &l3_hdr->next_hop.rx.src_mac, skb->len);
5606 else
5607 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5608 skb->len);
5609 }
5610
5611
5612 if (!card->options.sniffer &&
5613 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5614 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5615 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5616 l3_hdr->vlan_id :
5617 l3_hdr->next_hop.rx.vlan_id;
5618
5619 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5620 }
5621}
5622#endif
5623
5624static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5625 struct qeth_hdr *hdr, bool uses_frags)
5626{
5627 struct napi_struct *napi = &card->napi;
5628 bool is_cso;
5629
5630 switch (hdr->hdr.l2.id) {
5631 case QETH_HEADER_TYPE_OSN:
5632 skb_push(skb, sizeof(*hdr));
5633 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr));
5634 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5635 QETH_CARD_STAT_INC(card, rx_packets);
5636
5637 card->osn_info.data_cb(skb);
5638 return;
5639#if IS_ENABLED(CONFIG_QETH_L3)
5640 case QETH_HEADER_TYPE_LAYER3:
5641 qeth_l3_rebuild_skb(card, skb, hdr);
5642 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5643 break;
5644#endif
5645 case QETH_HEADER_TYPE_LAYER2:
5646 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5647 break;
5648 default:
5649
5650 if (uses_frags)
5651 napi_free_frags(napi);
5652 else
5653 dev_kfree_skb_any(skb);
5654 return;
5655 }
5656
5657 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5658 skb->ip_summed = CHECKSUM_UNNECESSARY;
5659 QETH_CARD_STAT_INC(card, rx_skb_csum);
5660 } else {
5661 skb->ip_summed = CHECKSUM_NONE;
5662 }
5663
5664 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5665 QETH_CARD_STAT_INC(card, rx_packets);
5666 if (skb_is_nonlinear(skb)) {
5667 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5668 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5669 skb_shinfo(skb)->nr_frags);
5670 }
5671
5672 if (uses_frags) {
5673 napi_gro_frags(napi);
5674 } else {
5675 skb->protocol = eth_type_trans(skb, skb->dev);
5676 napi_gro_receive(napi, skb);
5677 }
5678}
5679
5680static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5681{
5682 struct page *page = virt_to_page(data);
5683 unsigned int next_frag;
5684
5685 next_frag = skb_shinfo(skb)->nr_frags;
5686 get_page(page);
5687 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5688 data_len);
5689}
5690
5691static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5692{
5693 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5694}
5695
5696static int qeth_extract_skb(struct qeth_card *card,
5697 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5698 int *__offset)
5699{
5700 struct qeth_priv *priv = netdev_priv(card->dev);
5701 struct qdio_buffer *buffer = qethbuffer->buffer;
5702 struct napi_struct *napi = &card->napi;
5703 struct qdio_buffer_element *element;
5704 unsigned int linear_len = 0;
5705 bool uses_frags = false;
5706 int offset = *__offset;
5707 bool use_rx_sg = false;
5708 unsigned int headroom;
5709 struct qeth_hdr *hdr;
5710 struct sk_buff *skb;
5711 int skb_len = 0;
5712
5713 element = &buffer->element[*element_no];
5714
5715next_packet:
5716
5717 while (element->length < offset + sizeof(struct qeth_hdr)) {
5718 if (qeth_is_last_sbale(element))
5719 return -ENODATA;
5720 element++;
5721 offset = 0;
5722 }
5723
5724 hdr = phys_to_virt(element->addr) + offset;
5725 offset += sizeof(*hdr);
5726 skb = NULL;
5727
5728 switch (hdr->hdr.l2.id) {
5729 case QETH_HEADER_TYPE_LAYER2:
5730 skb_len = hdr->hdr.l2.pkt_length;
5731 linear_len = ETH_HLEN;
5732 headroom = 0;
5733 break;
5734 case QETH_HEADER_TYPE_LAYER3:
5735 skb_len = hdr->hdr.l3.length;
5736 if (!IS_LAYER3(card)) {
5737 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5738 goto walk_packet;
5739 }
5740
5741 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5742 linear_len = ETH_HLEN;
5743 headroom = 0;
5744 break;
5745 }
5746
5747 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5748 linear_len = sizeof(struct ipv6hdr);
5749 else
5750 linear_len = sizeof(struct iphdr);
5751 headroom = ETH_HLEN;
5752 break;
5753 case QETH_HEADER_TYPE_OSN:
5754 skb_len = hdr->hdr.osn.pdu_length;
5755 if (!IS_OSN(card)) {
5756 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5757 goto walk_packet;
5758 }
5759
5760 linear_len = skb_len;
5761 headroom = sizeof(struct qeth_hdr);
5762 break;
5763 default:
5764 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5765 QETH_CARD_STAT_INC(card, rx_frame_errors);
5766 else
5767 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5768
5769
5770 return -EPROTONOSUPPORT;
5771 }
5772
5773 if (skb_len < linear_len) {
5774 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5775 goto walk_packet;
5776 }
5777
5778 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5779 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5780 !atomic_read(&card->force_alloc_skb) &&
5781 !IS_OSN(card));
5782
5783 if (use_rx_sg) {
5784
5785 if (qethbuffer->rx_skb &&
5786 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5787 skb = qethbuffer->rx_skb;
5788 qethbuffer->rx_skb = NULL;
5789 goto use_skb;
5790 }
5791
5792 skb = napi_get_frags(napi);
5793 if (!skb) {
5794
5795 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5796 goto walk_packet;
5797 }
5798
5799 if (skb_tailroom(skb) >= linear_len + headroom) {
5800 uses_frags = true;
5801 goto use_skb;
5802 }
5803
5804 netdev_info_once(card->dev,
5805 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5806 linear_len + headroom, skb_tailroom(skb));
5807
5808 }
5809
5810 linear_len = skb_len;
5811 skb = napi_alloc_skb(napi, linear_len + headroom);
5812 if (!skb) {
5813 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5814 goto walk_packet;
5815 }
5816
5817use_skb:
5818 if (headroom)
5819 skb_reserve(skb, headroom);
5820walk_packet:
5821 while (skb_len) {
5822 int data_len = min(skb_len, (int)(element->length - offset));
5823 char *data = phys_to_virt(element->addr) + offset;
5824
5825 skb_len -= data_len;
5826 offset += data_len;
5827
5828
5829 if (skb && data_len) {
5830 if (linear_len) {
5831 unsigned int copy_len;
5832
5833 copy_len = min_t(unsigned int, linear_len,
5834 data_len);
5835
5836 skb_put_data(skb, data, copy_len);
5837 linear_len -= copy_len;
5838 data_len -= copy_len;
5839 data += copy_len;
5840 }
5841
5842 if (data_len)
5843 qeth_create_skb_frag(skb, data, data_len);
5844 }
5845
5846
5847 if (skb_len) {
5848 if (qeth_is_last_sbale(element)) {
5849 QETH_CARD_TEXT(card, 4, "unexeob");
5850 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5851 if (skb) {
5852 if (uses_frags)
5853 napi_free_frags(napi);
5854 else
5855 dev_kfree_skb_any(skb);
5856 QETH_CARD_STAT_INC(card,
5857 rx_length_errors);
5858 }
5859 return -EMSGSIZE;
5860 }
5861 element++;
5862 offset = 0;
5863 }
5864 }
5865
5866
5867 if (!skb)
5868 goto next_packet;
5869
5870 *element_no = element - &buffer->element[0];
5871 *__offset = offset;
5872
5873 qeth_receive_skb(card, skb, hdr, uses_frags);
5874 return 0;
5875}
5876
5877static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5878 struct qeth_qdio_buffer *buf, bool *done)
5879{
5880 unsigned int work_done = 0;
5881
5882 while (budget) {
5883 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5884 &card->rx.e_offset)) {
5885 *done = true;
5886 break;
5887 }
5888
5889 work_done++;
5890 budget--;
5891 }
5892
5893 return work_done;
5894}
5895
5896static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5897{
5898 struct qeth_rx *ctx = &card->rx;
5899 unsigned int work_done = 0;
5900
5901 while (budget > 0) {
5902 struct qeth_qdio_buffer *buffer;
5903 unsigned int skbs_done = 0;
5904 bool done = false;
5905
5906
5907 if (!card->rx.b_count) {
5908 card->rx.qdio_err = 0;
5909 card->rx.b_count = qdio_inspect_queue(CARD_DDEV(card),
5910 0, true,
5911 &card->rx.b_index,
5912 &card->rx.qdio_err);
5913 if (card->rx.b_count <= 0) {
5914 card->rx.b_count = 0;
5915 break;
5916 }
5917 }
5918
5919
5920 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5921 if (!(card->rx.qdio_err &&
5922 qeth_check_qdio_errors(card, buffer->buffer,
5923 card->rx.qdio_err, "qinerr")))
5924 skbs_done = qeth_extract_skbs(card, budget, buffer,
5925 &done);
5926 else
5927 done = true;
5928
5929 work_done += skbs_done;
5930 budget -= skbs_done;
5931
5932 if (done) {
5933 QETH_CARD_STAT_INC(card, rx_bufs);
5934 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5935 buffer->pool_entry = NULL;
5936 card->rx.b_count--;
5937 ctx->bufs_refill++;
5938 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5939 ctx->bufs_refill);
5940
5941
5942 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5943 card->rx.buf_element = 0;
5944 card->rx.e_offset = 0;
5945 }
5946 }
5947
5948 return work_done;
5949}
5950
5951static void qeth_cq_poll(struct qeth_card *card)
5952{
5953 unsigned int work_done = 0;
5954
5955 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5956 unsigned int start, error;
5957 int completed;
5958
5959 completed = qdio_inspect_queue(CARD_DDEV(card), 1, true, &start,
5960 &error);
5961 if (completed <= 0)
5962 return;
5963
5964 qeth_qdio_cq_handler(card, error, 1, start, completed);
5965 work_done += completed;
5966 }
5967}
5968
5969int qeth_poll(struct napi_struct *napi, int budget)
5970{
5971 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5972 unsigned int work_done;
5973
5974 work_done = qeth_rx_poll(card, budget);
5975
5976 if (qeth_use_tx_irqs(card)) {
5977 struct qeth_qdio_out_q *queue;
5978 unsigned int i;
5979
5980 qeth_for_each_output_queue(card, queue, i) {
5981 if (!qeth_out_queue_is_empty(queue))
5982 napi_schedule(&queue->napi);
5983 }
5984 }
5985
5986 if (card->options.cq == QETH_CQ_ENABLED)
5987 qeth_cq_poll(card);
5988
5989 if (budget) {
5990 struct qeth_rx *ctx = &card->rx;
5991
5992
5993 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5994
5995
5996 if (work_done >= budget)
5997 return work_done;
5998 }
5999
6000 if (napi_complete_done(napi, work_done) &&
6001 qdio_start_irq(CARD_DDEV(card)))
6002 napi_schedule(napi);
6003
6004 return work_done;
6005}
6006EXPORT_SYMBOL_GPL(qeth_poll);
6007
6008static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
6009 unsigned int bidx, unsigned int qdio_error,
6010 int budget)
6011{
6012 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
6013 u8 sflags = buffer->buffer->element[15].sflags;
6014 struct qeth_card *card = queue->card;
6015 bool error = !!qdio_error;
6016
6017 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
6018 struct qaob *aob = buffer->aob;
6019 struct qeth_qaob_priv1 *priv;
6020 enum iucv_tx_notify notify;
6021
6022 if (!aob) {
6023 netdev_WARN_ONCE(card->dev,
6024 "Pending TX buffer %#x without QAOB on TX queue %u\n",
6025 bidx, queue->queue_no);
6026 qeth_schedule_recovery(card);
6027 return;
6028 }
6029
6030 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
6031
6032 priv = (struct qeth_qaob_priv1 *)&aob->user1;
6033
6034 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
6035 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
6036
6037
6038 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
6039 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
6040 QETH_CARD_TEXT(card, 2, "outofbuf");
6041 qeth_schedule_recovery(card);
6042 }
6043
6044 list_add(&buffer->list_entry, &queue->pending_bufs);
6045
6046 return;
6047 }
6048
6049
6050 notify = qeth_compute_cq_notification(aob->aorc, 0);
6051 qeth_notify_skbs(queue, buffer, notify);
6052 error = !!aob->aorc;
6053 memset(aob, 0, sizeof(*aob));
6054 } else if (card->options.cq == QETH_CQ_ENABLED) {
6055 qeth_notify_skbs(queue, buffer,
6056 qeth_compute_cq_notification(sflags, 0));
6057 }
6058
6059 qeth_clear_output_buffer(queue, buffer, error, budget);
6060}
6061
6062static int qeth_tx_poll(struct napi_struct *napi, int budget)
6063{
6064 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
6065 unsigned int queue_no = queue->queue_no;
6066 struct qeth_card *card = queue->card;
6067 struct net_device *dev = card->dev;
6068 unsigned int work_done = 0;
6069 struct netdev_queue *txq;
6070
6071 if (IS_IQD(card))
6072 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
6073 else
6074 txq = netdev_get_tx_queue(dev, queue_no);
6075
6076 while (1) {
6077 unsigned int start, error, i;
6078 unsigned int packets = 0;
6079 unsigned int bytes = 0;
6080 int completed;
6081
6082 qeth_tx_complete_pending_bufs(card, queue, false, budget);
6083
6084 if (qeth_out_queue_is_empty(queue)) {
6085 napi_complete(napi);
6086 return 0;
6087 }
6088
6089
6090 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6091 QETH_TXQ_STAT_INC(queue, completion_yield);
6092 if (napi_complete_done(napi, 0))
6093 napi_schedule(napi);
6094 return 0;
6095 }
6096
6097 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
6098 &start, &error);
6099 if (completed <= 0) {
6100
6101 if (napi_complete_done(napi, 0) &&
6102 !atomic_read(&queue->set_pci_flags_count))
6103 qeth_tx_arm_timer(queue, queue->rescan_usecs);
6104 return 0;
6105 }
6106
6107 for (i = start; i < start + completed; i++) {
6108 struct qeth_qdio_out_buffer *buffer;
6109 unsigned int bidx = QDIO_BUFNR(i);
6110
6111 buffer = queue->bufs[bidx];
6112 packets += buffer->frames;
6113 bytes += buffer->bytes;
6114
6115 qeth_handle_send_error(card, buffer, error);
6116 if (IS_IQD(card))
6117 qeth_iqd_tx_complete(queue, bidx, error, budget);
6118 else
6119 qeth_clear_output_buffer(queue, buffer, error,
6120 budget);
6121 }
6122
6123 atomic_sub(completed, &queue->used_buffers);
6124 work_done += completed;
6125 if (IS_IQD(card))
6126 netdev_tx_completed_queue(txq, packets, bytes);
6127 else
6128 qeth_check_outbound_queue(queue);
6129
6130
6131
6132
6133
6134
6135 if (netif_tx_queue_stopped(txq) &&
6136 !qeth_out_queue_is_full(queue))
6137 netif_tx_wake_queue(txq);
6138 }
6139}
6140
6141static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6142{
6143 if (!cmd->hdr.return_code)
6144 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6145 return cmd->hdr.return_code;
6146}
6147
6148static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6149 struct qeth_reply *reply,
6150 unsigned long data)
6151{
6152 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6153 struct qeth_ipa_caps *caps = reply->param;
6154
6155 if (qeth_setassparms_inspect_rc(cmd))
6156 return -EIO;
6157
6158 caps->supported = cmd->data.setassparms.data.caps.supported;
6159 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6160 return 0;
6161}
6162
6163int qeth_setassparms_cb(struct qeth_card *card,
6164 struct qeth_reply *reply, unsigned long data)
6165{
6166 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6167
6168 QETH_CARD_TEXT(card, 4, "defadpcb");
6169
6170 if (cmd->hdr.return_code)
6171 return -EIO;
6172
6173 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6174 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6175 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6176 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6177 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6178 return 0;
6179}
6180EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6181
6182struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6183 enum qeth_ipa_funcs ipa_func,
6184 u16 cmd_code,
6185 unsigned int data_length,
6186 enum qeth_prot_versions prot)
6187{
6188 struct qeth_ipacmd_setassparms *setassparms;
6189 struct qeth_ipacmd_setassparms_hdr *hdr;
6190 struct qeth_cmd_buffer *iob;
6191
6192 QETH_CARD_TEXT(card, 4, "getasscm");
6193 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6194 data_length +
6195 offsetof(struct qeth_ipacmd_setassparms,
6196 data));
6197 if (!iob)
6198 return NULL;
6199
6200 setassparms = &__ipa_cmd(iob)->data.setassparms;
6201 setassparms->assist_no = ipa_func;
6202
6203 hdr = &setassparms->hdr;
6204 hdr->length = sizeof(*hdr) + data_length;
6205 hdr->command_code = cmd_code;
6206 return iob;
6207}
6208EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6209
6210int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6211 enum qeth_ipa_funcs ipa_func,
6212 u16 cmd_code, u32 *data,
6213 enum qeth_prot_versions prot)
6214{
6215 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6216 struct qeth_cmd_buffer *iob;
6217
6218 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6219 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6220 if (!iob)
6221 return -ENOMEM;
6222
6223 if (data)
6224 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6225 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6226}
6227EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6228
6229static void qeth_unregister_dbf_views(void)
6230{
6231 int x;
6232
6233 for (x = 0; x < QETH_DBF_INFOS; x++) {
6234 debug_unregister(qeth_dbf[x].id);
6235 qeth_dbf[x].id = NULL;
6236 }
6237}
6238
6239void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6240{
6241 char dbf_txt_buf[32];
6242 va_list args;
6243
6244 if (!debug_level_enabled(id, level))
6245 return;
6246 va_start(args, fmt);
6247 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6248 va_end(args);
6249 debug_text_event(id, level, dbf_txt_buf);
6250}
6251EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6252
6253static int qeth_register_dbf_views(void)
6254{
6255 int ret;
6256 int x;
6257
6258 for (x = 0; x < QETH_DBF_INFOS; x++) {
6259
6260 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6261 qeth_dbf[x].pages,
6262 qeth_dbf[x].areas,
6263 qeth_dbf[x].len);
6264 if (qeth_dbf[x].id == NULL) {
6265 qeth_unregister_dbf_views();
6266 return -ENOMEM;
6267 }
6268
6269
6270 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6271 if (ret) {
6272 qeth_unregister_dbf_views();
6273 return ret;
6274 }
6275
6276
6277 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6278 }
6279
6280 return 0;
6281}
6282
6283static DEFINE_MUTEX(qeth_mod_mutex);
6284
6285int qeth_setup_discipline(struct qeth_card *card,
6286 enum qeth_discipline_id discipline)
6287{
6288 int rc;
6289
6290 mutex_lock(&qeth_mod_mutex);
6291 switch (discipline) {
6292 case QETH_DISCIPLINE_LAYER3:
6293 card->discipline = try_then_request_module(
6294 symbol_get(qeth_l3_discipline), "qeth_l3");
6295 break;
6296 case QETH_DISCIPLINE_LAYER2:
6297 card->discipline = try_then_request_module(
6298 symbol_get(qeth_l2_discipline), "qeth_l2");
6299 break;
6300 default:
6301 break;
6302 }
6303 mutex_unlock(&qeth_mod_mutex);
6304
6305 if (!card->discipline) {
6306 dev_err(&card->gdev->dev, "There is no kernel module to "
6307 "support discipline %d\n", discipline);
6308 return -EINVAL;
6309 }
6310
6311 rc = card->discipline->setup(card->gdev);
6312 if (rc) {
6313 if (discipline == QETH_DISCIPLINE_LAYER2)
6314 symbol_put(qeth_l2_discipline);
6315 else
6316 symbol_put(qeth_l3_discipline);
6317 card->discipline = NULL;
6318
6319 return rc;
6320 }
6321
6322 card->options.layer = discipline;
6323 return 0;
6324}
6325
6326void qeth_remove_discipline(struct qeth_card *card)
6327{
6328 card->discipline->remove(card->gdev);
6329
6330 if (IS_LAYER2(card))
6331 symbol_put(qeth_l2_discipline);
6332 else
6333 symbol_put(qeth_l3_discipline);
6334 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6335 card->discipline = NULL;
6336}
6337
6338const struct device_type qeth_generic_devtype = {
6339 .name = "qeth_generic",
6340};
6341EXPORT_SYMBOL_GPL(qeth_generic_devtype);
6342
6343static const struct device_type qeth_osn_devtype = {
6344 .name = "qeth_osn",
6345};
6346
6347#define DBF_NAME_LEN 20
6348
6349struct qeth_dbf_entry {
6350 char dbf_name[DBF_NAME_LEN];
6351 debug_info_t *dbf_info;
6352 struct list_head dbf_list;
6353};
6354
6355static LIST_HEAD(qeth_dbf_list);
6356static DEFINE_MUTEX(qeth_dbf_list_mutex);
6357
6358static debug_info_t *qeth_get_dbf_entry(char *name)
6359{
6360 struct qeth_dbf_entry *entry;
6361 debug_info_t *rc = NULL;
6362
6363 mutex_lock(&qeth_dbf_list_mutex);
6364 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6365 if (strcmp(entry->dbf_name, name) == 0) {
6366 rc = entry->dbf_info;
6367 break;
6368 }
6369 }
6370 mutex_unlock(&qeth_dbf_list_mutex);
6371 return rc;
6372}
6373
6374static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6375{
6376 struct qeth_dbf_entry *new_entry;
6377
6378 card->debug = debug_register(name, 2, 1, 8);
6379 if (!card->debug) {
6380 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6381 goto err;
6382 }
6383 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6384 goto err_dbg;
6385 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6386 if (!new_entry)
6387 goto err_dbg;
6388 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6389 new_entry->dbf_info = card->debug;
6390 mutex_lock(&qeth_dbf_list_mutex);
6391 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6392 mutex_unlock(&qeth_dbf_list_mutex);
6393
6394 return 0;
6395
6396err_dbg:
6397 debug_unregister(card->debug);
6398err:
6399 return -ENOMEM;
6400}
6401
6402static void qeth_clear_dbf_list(void)
6403{
6404 struct qeth_dbf_entry *entry, *tmp;
6405
6406 mutex_lock(&qeth_dbf_list_mutex);
6407 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6408 list_del(&entry->dbf_list);
6409 debug_unregister(entry->dbf_info);
6410 kfree(entry);
6411 }
6412 mutex_unlock(&qeth_dbf_list_mutex);
6413}
6414
6415static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6416{
6417 struct net_device *dev;
6418 struct qeth_priv *priv;
6419
6420 switch (card->info.type) {
6421 case QETH_CARD_TYPE_IQD:
6422 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6423 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6424 break;
6425 case QETH_CARD_TYPE_OSM:
6426 dev = alloc_etherdev(sizeof(*priv));
6427 break;
6428 case QETH_CARD_TYPE_OSN:
6429 dev = alloc_netdev(sizeof(*priv), "osn%d", NET_NAME_UNKNOWN,
6430 ether_setup);
6431 break;
6432 default:
6433 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6434 }
6435
6436 if (!dev)
6437 return NULL;
6438
6439 priv = netdev_priv(dev);
6440 priv->rx_copybreak = QETH_RX_COPYBREAK;
6441 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6442
6443 dev->ml_priv = card;
6444 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6445 dev->min_mtu = IS_OSN(card) ? 64 : 576;
6446
6447 dev->max_mtu = 0;
6448 dev->mtu = 0;
6449 SET_NETDEV_DEV(dev, &card->gdev->dev);
6450 netif_carrier_off(dev);
6451
6452 if (IS_OSN(card)) {
6453 dev->ethtool_ops = &qeth_osn_ethtool_ops;
6454 } else {
6455 dev->ethtool_ops = &qeth_ethtool_ops;
6456 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6457 dev->hw_features |= NETIF_F_SG;
6458 dev->vlan_features |= NETIF_F_SG;
6459 if (IS_IQD(card))
6460 dev->features |= NETIF_F_SG;
6461 }
6462
6463 return dev;
6464}
6465
6466struct net_device *qeth_clone_netdev(struct net_device *orig)
6467{
6468 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6469
6470 if (!clone)
6471 return NULL;
6472
6473 clone->dev_port = orig->dev_port;
6474 return clone;
6475}
6476
6477static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6478{
6479 struct qeth_card *card;
6480 struct device *dev;
6481 int rc;
6482 enum qeth_discipline_id enforced_disc;
6483 char dbf_name[DBF_NAME_LEN];
6484
6485 QETH_DBF_TEXT(SETUP, 2, "probedev");
6486
6487 dev = &gdev->dev;
6488 if (!get_device(dev))
6489 return -ENODEV;
6490
6491 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6492
6493 card = qeth_alloc_card(gdev);
6494 if (!card) {
6495 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6496 rc = -ENOMEM;
6497 goto err_dev;
6498 }
6499
6500 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6501 dev_name(&gdev->dev));
6502 card->debug = qeth_get_dbf_entry(dbf_name);
6503 if (!card->debug) {
6504 rc = qeth_add_dbf_entry(card, dbf_name);
6505 if (rc)
6506 goto err_card;
6507 }
6508
6509 qeth_setup_card(card);
6510 card->dev = qeth_alloc_netdev(card);
6511 if (!card->dev) {
6512 rc = -ENOMEM;
6513 goto err_card;
6514 }
6515
6516 qeth_determine_capabilities(card);
6517 qeth_set_blkt_defaults(card);
6518
6519 card->qdio.no_out_queues = card->dev->num_tx_queues;
6520 rc = qeth_update_from_chp_desc(card);
6521 if (rc)
6522 goto err_chp_desc;
6523
6524 if (IS_OSN(card))
6525 gdev->dev.groups = qeth_osn_dev_groups;
6526 else
6527 gdev->dev.groups = qeth_dev_groups;
6528
6529 enforced_disc = qeth_enforce_discipline(card);
6530 switch (enforced_disc) {
6531 case QETH_DISCIPLINE_UNDETERMINED:
6532 gdev->dev.type = &qeth_generic_devtype;
6533 break;
6534 default:
6535 card->info.layer_enforced = true;
6536
6537 rc = qeth_setup_discipline(card, enforced_disc);
6538 if (rc)
6539 goto err_setup_disc;
6540
6541 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
6542 card->discipline->devtype;
6543 break;
6544 }
6545
6546 return 0;
6547
6548err_setup_disc:
6549err_chp_desc:
6550 free_netdev(card->dev);
6551err_card:
6552 qeth_core_free_card(card);
6553err_dev:
6554 put_device(dev);
6555 return rc;
6556}
6557
6558static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6559{
6560 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6561
6562 QETH_CARD_TEXT(card, 2, "removedv");
6563
6564 mutex_lock(&card->discipline_mutex);
6565 if (card->discipline)
6566 qeth_remove_discipline(card);
6567 mutex_unlock(&card->discipline_mutex);
6568
6569 qeth_free_qdio_queues(card);
6570
6571 free_netdev(card->dev);
6572 qeth_core_free_card(card);
6573 put_device(&gdev->dev);
6574}
6575
6576static int qeth_core_set_online(struct ccwgroup_device *gdev)
6577{
6578 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6579 int rc = 0;
6580 enum qeth_discipline_id def_discipline;
6581
6582 mutex_lock(&card->discipline_mutex);
6583 if (!card->discipline) {
6584 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6585 QETH_DISCIPLINE_LAYER2;
6586 rc = qeth_setup_discipline(card, def_discipline);
6587 if (rc)
6588 goto err;
6589 }
6590
6591 rc = qeth_set_online(card, card->discipline);
6592
6593err:
6594 mutex_unlock(&card->discipline_mutex);
6595 return rc;
6596}
6597
6598static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6599{
6600 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6601 int rc;
6602
6603 mutex_lock(&card->discipline_mutex);
6604 rc = qeth_set_offline(card, card->discipline, false);
6605 mutex_unlock(&card->discipline_mutex);
6606
6607 return rc;
6608}
6609
6610static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6611{
6612 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6613
6614 qeth_set_allowed_threads(card, 0, 1);
6615 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6616 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6617 qeth_qdio_clear_card(card, 0);
6618 qeth_drain_output_queues(card);
6619 qdio_free(CARD_DDEV(card));
6620}
6621
6622static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6623 size_t count)
6624{
6625 int err;
6626
6627 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6628 buf);
6629
6630 return err ? err : count;
6631}
6632static DRIVER_ATTR_WO(group);
6633
6634static struct attribute *qeth_drv_attrs[] = {
6635 &driver_attr_group.attr,
6636 NULL,
6637};
6638static struct attribute_group qeth_drv_attr_group = {
6639 .attrs = qeth_drv_attrs,
6640};
6641static const struct attribute_group *qeth_drv_attr_groups[] = {
6642 &qeth_drv_attr_group,
6643 NULL,
6644};
6645
6646static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6647 .driver = {
6648 .groups = qeth_drv_attr_groups,
6649 .owner = THIS_MODULE,
6650 .name = "qeth",
6651 },
6652 .ccw_driver = &qeth_ccw_driver,
6653 .setup = qeth_core_probe_device,
6654 .remove = qeth_core_remove_device,
6655 .set_online = qeth_core_set_online,
6656 .set_offline = qeth_core_set_offline,
6657 .shutdown = qeth_core_shutdown,
6658};
6659
6660struct qeth_card *qeth_get_card_by_busid(char *bus_id)
6661{
6662 struct ccwgroup_device *gdev;
6663 struct qeth_card *card;
6664
6665 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
6666 if (!gdev)
6667 return NULL;
6668
6669 card = dev_get_drvdata(&gdev->dev);
6670 put_device(&gdev->dev);
6671 return card;
6672}
6673EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
6674
6675int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6676{
6677 struct qeth_card *card = dev->ml_priv;
6678 struct mii_ioctl_data *mii_data;
6679 int rc = 0;
6680
6681 switch (cmd) {
6682 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6683 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
6684 break;
6685 case SIOC_QETH_GET_CARD_TYPE:
6686 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6687 !IS_VM_NIC(card))
6688 return 1;
6689 return 0;
6690 case SIOCGMIIPHY:
6691 mii_data = if_mii(rq);
6692 mii_data->phy_id = 0;
6693 break;
6694 case SIOCGMIIREG:
6695 mii_data = if_mii(rq);
6696 if (mii_data->phy_id != 0)
6697 rc = -EINVAL;
6698 else
6699 mii_data->val_out = qeth_mdio_read(dev,
6700 mii_data->phy_id, mii_data->reg_num);
6701 break;
6702 case SIOC_QETH_QUERY_OAT:
6703 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
6704 break;
6705 default:
6706 if (card->discipline->do_ioctl)
6707 rc = card->discipline->do_ioctl(dev, rq, cmd);
6708 else
6709 rc = -EOPNOTSUPP;
6710 }
6711 if (rc)
6712 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6713 return rc;
6714}
6715EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6716
6717static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6718 unsigned long data)
6719{
6720 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6721 u32 *features = reply->param;
6722
6723 if (qeth_setassparms_inspect_rc(cmd))
6724 return -EIO;
6725
6726 *features = cmd->data.setassparms.data.flags_32bit;
6727 return 0;
6728}
6729
6730static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6731 enum qeth_prot_versions prot)
6732{
6733 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6734 NULL, prot);
6735}
6736
6737static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6738 enum qeth_prot_versions prot, u8 *lp2lp)
6739{
6740 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6741 struct qeth_cmd_buffer *iob;
6742 struct qeth_ipa_caps caps;
6743 u32 features;
6744 int rc;
6745
6746
6747 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6748 cstype == IPA_OUTBOUND_CHECKSUM)
6749 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6750
6751 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6752 prot);
6753 if (!iob)
6754 return -ENOMEM;
6755
6756 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6757 if (rc)
6758 return rc;
6759
6760 if ((required_features & features) != required_features) {
6761 qeth_set_csum_off(card, cstype, prot);
6762 return -EOPNOTSUPP;
6763 }
6764
6765 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6766 SETASS_DATA_SIZEOF(flags_32bit),
6767 prot);
6768 if (!iob) {
6769 qeth_set_csum_off(card, cstype, prot);
6770 return -ENOMEM;
6771 }
6772
6773 if (features & QETH_IPA_CHECKSUM_LP2LP)
6774 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6775 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6776 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6777 if (rc) {
6778 qeth_set_csum_off(card, cstype, prot);
6779 return rc;
6780 }
6781
6782 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6783 !qeth_ipa_caps_enabled(&caps, required_features)) {
6784 qeth_set_csum_off(card, cstype, prot);
6785 return -EOPNOTSUPP;
6786 }
6787
6788 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6789 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6790
6791 if (lp2lp)
6792 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6793
6794 return 0;
6795}
6796
6797static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6798 enum qeth_prot_versions prot, u8 *lp2lp)
6799{
6800 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6801 qeth_set_csum_off(card, cstype, prot);
6802}
6803
6804static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6805 unsigned long data)
6806{
6807 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6808 struct qeth_tso_start_data *tso_data = reply->param;
6809
6810 if (qeth_setassparms_inspect_rc(cmd))
6811 return -EIO;
6812
6813 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6814 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6815 return 0;
6816}
6817
6818static int qeth_set_tso_off(struct qeth_card *card,
6819 enum qeth_prot_versions prot)
6820{
6821 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6822 IPA_CMD_ASS_STOP, NULL, prot);
6823}
6824
6825static int qeth_set_tso_on(struct qeth_card *card,
6826 enum qeth_prot_versions prot)
6827{
6828 struct qeth_tso_start_data tso_data;
6829 struct qeth_cmd_buffer *iob;
6830 struct qeth_ipa_caps caps;
6831 int rc;
6832
6833 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6834 IPA_CMD_ASS_START, 0, prot);
6835 if (!iob)
6836 return -ENOMEM;
6837
6838 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6839 if (rc)
6840 return rc;
6841
6842 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6843 qeth_set_tso_off(card, prot);
6844 return -EOPNOTSUPP;
6845 }
6846
6847 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6848 IPA_CMD_ASS_ENABLE,
6849 SETASS_DATA_SIZEOF(caps), prot);
6850 if (!iob) {
6851 qeth_set_tso_off(card, prot);
6852 return -ENOMEM;
6853 }
6854
6855
6856 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6857 QETH_IPA_LARGE_SEND_TCP;
6858 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6859 if (rc) {
6860 qeth_set_tso_off(card, prot);
6861 return rc;
6862 }
6863
6864 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6865 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6866 qeth_set_tso_off(card, prot);
6867 return -EOPNOTSUPP;
6868 }
6869
6870 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6871 tso_data.mss);
6872 return 0;
6873}
6874
6875static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6876 enum qeth_prot_versions prot)
6877{
6878 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6879}
6880
6881static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6882{
6883 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6884 int rc_ipv6;
6885
6886 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6887 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6888 QETH_PROT_IPV4, NULL);
6889 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6890
6891 return rc_ipv4;
6892
6893 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6894 QETH_PROT_IPV6, NULL);
6895
6896 if (on)
6897
6898 return (rc_ipv6) ? rc_ipv4 : 0;
6899
6900
6901 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6902}
6903
6904
6905
6906
6907
6908void qeth_enable_hw_features(struct net_device *dev)
6909{
6910 struct qeth_card *card = dev->ml_priv;
6911 netdev_features_t features;
6912
6913 features = dev->features;
6914
6915
6916
6917 dev->features &= ~dev->hw_features;
6918
6919 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6920 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6921 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6922 }
6923 netdev_update_features(dev);
6924 if (features != dev->features)
6925 dev_warn(&card->gdev->dev,
6926 "Device recovery failed to restore all offload features\n");
6927}
6928EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6929
6930static void qeth_check_restricted_features(struct qeth_card *card,
6931 netdev_features_t changed,
6932 netdev_features_t actual)
6933{
6934 netdev_features_t ipv6_features = NETIF_F_TSO6;
6935 netdev_features_t ipv4_features = NETIF_F_TSO;
6936
6937 if (!card->info.has_lp2lp_cso_v6)
6938 ipv6_features |= NETIF_F_IPV6_CSUM;
6939 if (!card->info.has_lp2lp_cso_v4)
6940 ipv4_features |= NETIF_F_IP_CSUM;
6941
6942 if ((changed & ipv6_features) && !(actual & ipv6_features))
6943 qeth_flush_local_addrs6(card);
6944 if ((changed & ipv4_features) && !(actual & ipv4_features))
6945 qeth_flush_local_addrs4(card);
6946}
6947
6948int qeth_set_features(struct net_device *dev, netdev_features_t features)
6949{
6950 struct qeth_card *card = dev->ml_priv;
6951 netdev_features_t changed = dev->features ^ features;
6952 int rc = 0;
6953
6954 QETH_CARD_TEXT(card, 2, "setfeat");
6955 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6956
6957 if ((changed & NETIF_F_IP_CSUM)) {
6958 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6959 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6960 &card->info.has_lp2lp_cso_v4);
6961 if (rc)
6962 changed ^= NETIF_F_IP_CSUM;
6963 }
6964 if (changed & NETIF_F_IPV6_CSUM) {
6965 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6966 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6967 &card->info.has_lp2lp_cso_v6);
6968 if (rc)
6969 changed ^= NETIF_F_IPV6_CSUM;
6970 }
6971 if (changed & NETIF_F_RXCSUM) {
6972 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6973 if (rc)
6974 changed ^= NETIF_F_RXCSUM;
6975 }
6976 if (changed & NETIF_F_TSO) {
6977 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6978 QETH_PROT_IPV4);
6979 if (rc)
6980 changed ^= NETIF_F_TSO;
6981 }
6982 if (changed & NETIF_F_TSO6) {
6983 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6984 QETH_PROT_IPV6);
6985 if (rc)
6986 changed ^= NETIF_F_TSO6;
6987 }
6988
6989 qeth_check_restricted_features(card, dev->features ^ features,
6990 dev->features ^ changed);
6991
6992
6993 if ((dev->features ^ features) == changed)
6994 return 0;
6995
6996 dev->features ^= changed;
6997 return -EIO;
6998}
6999EXPORT_SYMBOL_GPL(qeth_set_features);
7000
7001netdev_features_t qeth_fix_features(struct net_device *dev,
7002 netdev_features_t features)
7003{
7004 struct qeth_card *card = dev->ml_priv;
7005
7006 QETH_CARD_TEXT(card, 2, "fixfeat");
7007 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
7008 features &= ~NETIF_F_IP_CSUM;
7009 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
7010 features &= ~NETIF_F_IPV6_CSUM;
7011 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
7012 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
7013 features &= ~NETIF_F_RXCSUM;
7014 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
7015 features &= ~NETIF_F_TSO;
7016 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
7017 features &= ~NETIF_F_TSO6;
7018
7019 QETH_CARD_HEX(card, 2, &features, sizeof(features));
7020 return features;
7021}
7022EXPORT_SYMBOL_GPL(qeth_fix_features);
7023
7024netdev_features_t qeth_features_check(struct sk_buff *skb,
7025 struct net_device *dev,
7026 netdev_features_t features)
7027{
7028 struct qeth_card *card = dev->ml_priv;
7029
7030
7031 if (skb->ip_summed == CHECKSUM_PARTIAL &&
7032 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
7033 netdev_features_t restricted = 0;
7034
7035 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
7036 restricted |= NETIF_F_ALL_TSO;
7037
7038 switch (vlan_get_protocol(skb)) {
7039 case htons(ETH_P_IP):
7040 if (!card->info.has_lp2lp_cso_v4)
7041 restricted |= NETIF_F_IP_CSUM;
7042
7043 if (restricted && qeth_next_hop_is_local_v4(card, skb))
7044 features &= ~restricted;
7045 break;
7046 case htons(ETH_P_IPV6):
7047 if (!card->info.has_lp2lp_cso_v6)
7048 restricted |= NETIF_F_IPV6_CSUM;
7049
7050 if (restricted && qeth_next_hop_is_local_v6(card, skb))
7051 features &= ~restricted;
7052 break;
7053 default:
7054 break;
7055 }
7056 }
7057
7058
7059
7060
7061
7062
7063
7064
7065 if (netif_needs_gso(skb, features)) {
7066
7067 unsigned int doffset = skb->data - skb_mac_header(skb);
7068 unsigned int hsize = skb_shinfo(skb)->gso_size;
7069 unsigned int hroom = skb_headroom(skb);
7070
7071
7072 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
7073 features &= ~NETIF_F_SG;
7074 }
7075
7076 return vlan_features_check(skb, features);
7077}
7078EXPORT_SYMBOL_GPL(qeth_features_check);
7079
7080void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
7081{
7082 struct qeth_card *card = dev->ml_priv;
7083 struct qeth_qdio_out_q *queue;
7084 unsigned int i;
7085
7086 QETH_CARD_TEXT(card, 5, "getstat");
7087
7088 stats->rx_packets = card->stats.rx_packets;
7089 stats->rx_bytes = card->stats.rx_bytes;
7090 stats->rx_errors = card->stats.rx_length_errors +
7091 card->stats.rx_frame_errors +
7092 card->stats.rx_fifo_errors;
7093 stats->rx_dropped = card->stats.rx_dropped_nomem +
7094 card->stats.rx_dropped_notsupp +
7095 card->stats.rx_dropped_runt;
7096 stats->multicast = card->stats.rx_multicast;
7097 stats->rx_length_errors = card->stats.rx_length_errors;
7098 stats->rx_frame_errors = card->stats.rx_frame_errors;
7099 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
7100
7101 for (i = 0; i < card->qdio.no_out_queues; i++) {
7102 queue = card->qdio.out_qs[i];
7103
7104 stats->tx_packets += queue->stats.tx_packets;
7105 stats->tx_bytes += queue->stats.tx_bytes;
7106 stats->tx_errors += queue->stats.tx_errors;
7107 stats->tx_dropped += queue->stats.tx_dropped;
7108 }
7109}
7110EXPORT_SYMBOL_GPL(qeth_get_stats64);
7111
7112#define TC_IQD_UCAST 0
7113static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7114 unsigned int ucast_txqs)
7115{
7116 unsigned int prio;
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127 netdev_set_num_tc(dev, 1);
7128 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7129 QETH_IQD_MIN_UCAST_TXQ);
7130
7131
7132 for (prio = 0; prio <= TC_BITMASK; prio++)
7133 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7134}
7135
7136int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7137{
7138 struct net_device *dev = card->dev;
7139 int rc;
7140
7141
7142 if (IS_IQD(card))
7143 qeth_iqd_set_prio_tc_map(dev, count - 1);
7144
7145 rc = netif_set_real_num_tx_queues(dev, count);
7146
7147 if (rc && IS_IQD(card))
7148 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7149
7150 return rc;
7151}
7152EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
7153
7154u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7155 u8 cast_type, struct net_device *sb_dev)
7156{
7157 u16 txq;
7158
7159 if (cast_type != RTN_UNICAST)
7160 return QETH_IQD_MCAST_TXQ;
7161 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7162 return QETH_IQD_MIN_UCAST_TXQ;
7163
7164 txq = netdev_pick_tx(dev, skb, sb_dev);
7165 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7166}
7167EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7168
7169int qeth_open(struct net_device *dev)
7170{
7171 struct qeth_card *card = dev->ml_priv;
7172 struct qeth_qdio_out_q *queue;
7173 unsigned int i;
7174
7175 QETH_CARD_TEXT(card, 4, "qethopen");
7176
7177 card->data.state = CH_STATE_UP;
7178 netif_tx_start_all_queues(dev);
7179
7180 local_bh_disable();
7181 qeth_for_each_output_queue(card, queue, i) {
7182 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
7183 QETH_NAPI_WEIGHT);
7184 napi_enable(&queue->napi);
7185 napi_schedule(&queue->napi);
7186 }
7187
7188 napi_enable(&card->napi);
7189 napi_schedule(&card->napi);
7190
7191 local_bh_enable();
7192
7193 return 0;
7194}
7195EXPORT_SYMBOL_GPL(qeth_open);
7196
7197int qeth_stop(struct net_device *dev)
7198{
7199 struct qeth_card *card = dev->ml_priv;
7200 struct qeth_qdio_out_q *queue;
7201 unsigned int i;
7202
7203 QETH_CARD_TEXT(card, 4, "qethstop");
7204
7205 napi_disable(&card->napi);
7206 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7207 qdio_stop_irq(CARD_DDEV(card));
7208
7209
7210 qeth_for_each_output_queue(card, queue, i)
7211 napi_disable(&queue->napi);
7212
7213
7214 netif_tx_disable(dev);
7215
7216 qeth_for_each_output_queue(card, queue, i) {
7217 del_timer_sync(&queue->timer);
7218
7219 netif_napi_del(&queue->napi);
7220 }
7221
7222 return 0;
7223}
7224EXPORT_SYMBOL_GPL(qeth_stop);
7225
7226static int __init qeth_core_init(void)
7227{
7228 int rc;
7229
7230 pr_info("loading core functions\n");
7231
7232 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7233
7234 rc = qeth_register_dbf_views();
7235 if (rc)
7236 goto dbf_err;
7237 qeth_core_root_dev = root_device_register("qeth");
7238 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7239 if (rc)
7240 goto register_err;
7241 qeth_core_header_cache =
7242 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7243 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7244 0, NULL);
7245 if (!qeth_core_header_cache) {
7246 rc = -ENOMEM;
7247 goto slab_err;
7248 }
7249 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7250 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7251 if (!qeth_qdio_outbuf_cache) {
7252 rc = -ENOMEM;
7253 goto cqslab_err;
7254 }
7255 rc = ccw_driver_register(&qeth_ccw_driver);
7256 if (rc)
7257 goto ccw_err;
7258 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7259 if (rc)
7260 goto ccwgroup_err;
7261
7262 return 0;
7263
7264ccwgroup_err:
7265 ccw_driver_unregister(&qeth_ccw_driver);
7266ccw_err:
7267 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7268cqslab_err:
7269 kmem_cache_destroy(qeth_core_header_cache);
7270slab_err:
7271 root_device_unregister(qeth_core_root_dev);
7272register_err:
7273 qeth_unregister_dbf_views();
7274dbf_err:
7275 debugfs_remove_recursive(qeth_debugfs_root);
7276 pr_err("Initializing the qeth device driver failed\n");
7277 return rc;
7278}
7279
7280static void __exit qeth_core_exit(void)
7281{
7282 qeth_clear_dbf_list();
7283 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7284 ccw_driver_unregister(&qeth_ccw_driver);
7285 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7286 kmem_cache_destroy(qeth_core_header_cache);
7287 root_device_unregister(qeth_core_root_dev);
7288 qeth_unregister_dbf_views();
7289 debugfs_remove_recursive(qeth_debugfs_root);
7290 pr_info("core functions removed\n");
7291}
7292
7293module_init(qeth_core_init);
7294module_exit(qeth_core_exit);
7295MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7296MODULE_DESCRIPTION("qeth core functions");
7297MODULE_LICENSE("GPL");
7298
