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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
60static struct kmem_cache *qeth_core_header_cache;
61static struct kmem_cache *qeth_qdio_outbuf_cache;
62
63static struct device *qeth_core_root_dev;
64static struct dentry *qeth_debugfs_root;
65static struct lock_class_key qdio_out_skb_queue_key;
66
67static void qeth_issue_next_read_cb(struct qeth_card *card,
68 struct qeth_cmd_buffer *iob,
69 unsigned int data_length);
70static int qeth_qdio_establish(struct qeth_card *);
71static void qeth_free_qdio_queues(struct qeth_card *card);
72
73static const char *qeth_get_cardname(struct qeth_card *card)
74{
75 if (IS_VM_NIC(card)) {
76 switch (card->info.type) {
77 case QETH_CARD_TYPE_OSD:
78 return " Virtual NIC QDIO";
79 case QETH_CARD_TYPE_IQD:
80 return " Virtual NIC Hiper";
81 case QETH_CARD_TYPE_OSM:
82 return " Virtual NIC QDIO - OSM";
83 case QETH_CARD_TYPE_OSX:
84 return " Virtual NIC QDIO - OSX";
85 default:
86 return " unknown";
87 }
88 } else {
89 switch (card->info.type) {
90 case QETH_CARD_TYPE_OSD:
91 return " OSD Express";
92 case QETH_CARD_TYPE_IQD:
93 return " HiperSockets";
94 case QETH_CARD_TYPE_OSM:
95 return " OSM QDIO";
96 case QETH_CARD_TYPE_OSX:
97 return " OSX QDIO";
98 default:
99 return " unknown";
100 }
101 }
102 return " n/a";
103}
104
105
106const char *qeth_get_cardname_short(struct qeth_card *card)
107{
108 if (IS_VM_NIC(card)) {
109 switch (card->info.type) {
110 case QETH_CARD_TYPE_OSD:
111 return "Virt.NIC QDIO";
112 case QETH_CARD_TYPE_IQD:
113 return "Virt.NIC Hiper";
114 case QETH_CARD_TYPE_OSM:
115 return "Virt.NIC OSM";
116 case QETH_CARD_TYPE_OSX:
117 return "Virt.NIC OSX";
118 default:
119 return "unknown";
120 }
121 } else {
122 switch (card->info.type) {
123 case QETH_CARD_TYPE_OSD:
124 switch (card->info.link_type) {
125 case QETH_LINK_TYPE_FAST_ETH:
126 return "OSD_100";
127 case QETH_LINK_TYPE_HSTR:
128 return "HSTR";
129 case QETH_LINK_TYPE_GBIT_ETH:
130 return "OSD_1000";
131 case QETH_LINK_TYPE_10GBIT_ETH:
132 return "OSD_10GIG";
133 case QETH_LINK_TYPE_25GBIT_ETH:
134 return "OSD_25GIG";
135 case QETH_LINK_TYPE_LANE_ETH100:
136 return "OSD_FE_LANE";
137 case QETH_LINK_TYPE_LANE_TR:
138 return "OSD_TR_LANE";
139 case QETH_LINK_TYPE_LANE_ETH1000:
140 return "OSD_GbE_LANE";
141 case QETH_LINK_TYPE_LANE:
142 return "OSD_ATM_LANE";
143 default:
144 return "OSD_Express";
145 }
146 case QETH_CARD_TYPE_IQD:
147 return "HiperSockets";
148 case QETH_CARD_TYPE_OSM:
149 return "OSM_1000";
150 case QETH_CARD_TYPE_OSX:
151 return "OSX_10GIG";
152 default:
153 return "unknown";
154 }
155 }
156 return "n/a";
157}
158
159void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
160 int clear_start_mask)
161{
162 unsigned long flags;
163
164 spin_lock_irqsave(&card->thread_mask_lock, flags);
165 card->thread_allowed_mask = threads;
166 if (clear_start_mask)
167 card->thread_start_mask &= threads;
168 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
169 wake_up(&card->wait_q);
170}
171EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
172
173int qeth_threads_running(struct qeth_card *card, unsigned long threads)
174{
175 unsigned long flags;
176 int rc = 0;
177
178 spin_lock_irqsave(&card->thread_mask_lock, flags);
179 rc = (card->thread_running_mask & threads);
180 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
181 return rc;
182}
183EXPORT_SYMBOL_GPL(qeth_threads_running);
184
185static void qeth_clear_working_pool_list(struct qeth_card *card)
186{
187 struct qeth_buffer_pool_entry *pool_entry, *tmp;
188 struct qeth_qdio_q *queue = card->qdio.in_q;
189 unsigned int i;
190
191 QETH_CARD_TEXT(card, 5, "clwrklst");
192 list_for_each_entry_safe(pool_entry, tmp,
193 &card->qdio.in_buf_pool.entry_list, list)
194 list_del(&pool_entry->list);
195
196 if (!queue)
197 return;
198
199 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
200 queue->bufs[i].pool_entry = NULL;
201}
202
203static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
204{
205 unsigned int i;
206
207 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
208 if (entry->elements[i])
209 __free_page(entry->elements[i]);
210 }
211
212 kfree(entry);
213}
214
215static void qeth_free_buffer_pool(struct qeth_card *card)
216{
217 struct qeth_buffer_pool_entry *entry, *tmp;
218
219 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
220 init_list) {
221 list_del(&entry->init_list);
222 qeth_free_pool_entry(entry);
223 }
224}
225
226static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
227{
228 struct qeth_buffer_pool_entry *entry;
229 unsigned int i;
230
231 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
232 if (!entry)
233 return NULL;
234
235 for (i = 0; i < pages; i++) {
236 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
237
238 if (!entry->elements[i]) {
239 qeth_free_pool_entry(entry);
240 return NULL;
241 }
242 }
243
244 return entry;
245}
246
247static int qeth_alloc_buffer_pool(struct qeth_card *card)
248{
249 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
250 unsigned int i;
251
252 QETH_CARD_TEXT(card, 5, "alocpool");
253 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
254 struct qeth_buffer_pool_entry *entry;
255
256 entry = qeth_alloc_pool_entry(buf_elements);
257 if (!entry) {
258 qeth_free_buffer_pool(card);
259 return -ENOMEM;
260 }
261
262 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
263 }
264 return 0;
265}
266
267int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
268{
269 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
270 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
271 struct qeth_buffer_pool_entry *entry, *tmp;
272 int delta = count - pool->buf_count;
273 LIST_HEAD(entries);
274
275 QETH_CARD_TEXT(card, 2, "realcbp");
276
277
278 if (!card->qdio.in_q)
279 goto out;
280
281
282 while (delta < 0) {
283 entry = list_first_entry(&pool->entry_list,
284 struct qeth_buffer_pool_entry,
285 init_list);
286 list_del(&entry->init_list);
287 qeth_free_pool_entry(entry);
288
289 delta++;
290 }
291
292
293 while (delta > 0) {
294 entry = qeth_alloc_pool_entry(buf_elements);
295 if (!entry) {
296 list_for_each_entry_safe(entry, tmp, &entries,
297 init_list) {
298 list_del(&entry->init_list);
299 qeth_free_pool_entry(entry);
300 }
301
302 return -ENOMEM;
303 }
304
305 list_add(&entry->init_list, &entries);
306
307 delta--;
308 }
309
310 list_splice(&entries, &pool->entry_list);
311
312out:
313 card->qdio.in_buf_pool.buf_count = count;
314 pool->buf_count = count;
315 return 0;
316}
317EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
318
319static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
320{
321 if (!q)
322 return;
323
324 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
325 kfree(q);
326}
327
328static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
329{
330 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
331 int i;
332
333 if (!q)
334 return NULL;
335
336 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
337 kfree(q);
338 return NULL;
339 }
340
341 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
342 q->bufs[i].buffer = q->qdio_bufs[i];
343
344 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
345 return q;
346}
347
348static int qeth_cq_init(struct qeth_card *card)
349{
350 int rc;
351
352 if (card->options.cq == QETH_CQ_ENABLED) {
353 QETH_CARD_TEXT(card, 2, "cqinit");
354 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
355 QDIO_MAX_BUFFERS_PER_Q);
356 card->qdio.c_q->next_buf_to_init = 127;
357 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
358 card->qdio.no_in_queues - 1, 0, 127, NULL);
359 if (rc) {
360 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
361 goto out;
362 }
363 }
364 rc = 0;
365out:
366 return rc;
367}
368
369static int qeth_alloc_cq(struct qeth_card *card)
370{
371 if (card->options.cq == QETH_CQ_ENABLED) {
372 QETH_CARD_TEXT(card, 2, "cqon");
373 card->qdio.c_q = qeth_alloc_qdio_queue();
374 if (!card->qdio.c_q) {
375 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
376 return -ENOMEM;
377 }
378
379 card->qdio.no_in_queues = 2;
380 } else {
381 QETH_CARD_TEXT(card, 2, "nocq");
382 card->qdio.c_q = NULL;
383 card->qdio.no_in_queues = 1;
384 }
385 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
386 return 0;
387}
388
389static void qeth_free_cq(struct qeth_card *card)
390{
391 if (card->qdio.c_q) {
392 --card->qdio.no_in_queues;
393 qeth_free_qdio_queue(card->qdio.c_q);
394 card->qdio.c_q = NULL;
395 }
396}
397
398static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
399 int delayed)
400{
401 enum iucv_tx_notify n;
402
403 switch (sbalf15) {
404 case 0:
405 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
406 break;
407 case 4:
408 case 16:
409 case 17:
410 case 18:
411 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
412 TX_NOTIFY_UNREACHABLE;
413 break;
414 default:
415 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
416 TX_NOTIFY_GENERALERROR;
417 break;
418 }
419
420 return n;
421}
422
423static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
424{
425 if (refcount_dec_and_test(&iob->ref_count)) {
426 kfree(iob->data);
427 kfree(iob);
428 }
429}
430static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
431 void *data)
432{
433 ccw->cmd_code = cmd_code;
434 ccw->flags = flags | CCW_FLAG_SLI;
435 ccw->count = len;
436 ccw->cda = (__u32) __pa(data);
437}
438
439static int __qeth_issue_next_read(struct qeth_card *card)
440{
441 struct qeth_cmd_buffer *iob = card->read_cmd;
442 struct qeth_channel *channel = iob->channel;
443 struct ccw1 *ccw = __ccw_from_cmd(iob);
444 int rc;
445
446 QETH_CARD_TEXT(card, 5, "issnxrd");
447 if (channel->state != CH_STATE_UP)
448 return -EIO;
449
450 memset(iob->data, 0, iob->length);
451 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
452 iob->callback = qeth_issue_next_read_cb;
453
454 qeth_get_cmd(iob);
455
456 QETH_CARD_TEXT(card, 6, "noirqpnd");
457 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
458 if (!rc) {
459 channel->active_cmd = iob;
460 } else {
461 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
462 rc, CARD_DEVID(card));
463 qeth_unlock_channel(card, channel);
464 qeth_put_cmd(iob);
465 card->read_or_write_problem = 1;
466 qeth_schedule_recovery(card);
467 }
468 return rc;
469}
470
471static int qeth_issue_next_read(struct qeth_card *card)
472{
473 int ret;
474
475 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
476 ret = __qeth_issue_next_read(card);
477 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
478
479 return ret;
480}
481
482static void qeth_enqueue_cmd(struct qeth_card *card,
483 struct qeth_cmd_buffer *iob)
484{
485 spin_lock_irq(&card->lock);
486 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
487 spin_unlock_irq(&card->lock);
488}
489
490static void qeth_dequeue_cmd(struct qeth_card *card,
491 struct qeth_cmd_buffer *iob)
492{
493 spin_lock_irq(&card->lock);
494 list_del(&iob->list_entry);
495 spin_unlock_irq(&card->lock);
496}
497
498static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
499{
500 iob->rc = reason;
501 complete(&iob->done);
502}
503
504static void qeth_flush_local_addrs4(struct qeth_card *card)
505{
506 struct qeth_local_addr *addr;
507 struct hlist_node *tmp;
508 unsigned int i;
509
510 spin_lock_irq(&card->local_addrs4_lock);
511 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
512 hash_del_rcu(&addr->hnode);
513 kfree_rcu(addr, rcu);
514 }
515 spin_unlock_irq(&card->local_addrs4_lock);
516}
517
518static void qeth_flush_local_addrs6(struct qeth_card *card)
519{
520 struct qeth_local_addr *addr;
521 struct hlist_node *tmp;
522 unsigned int i;
523
524 spin_lock_irq(&card->local_addrs6_lock);
525 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
526 hash_del_rcu(&addr->hnode);
527 kfree_rcu(addr, rcu);
528 }
529 spin_unlock_irq(&card->local_addrs6_lock);
530}
531
532static void qeth_flush_local_addrs(struct qeth_card *card)
533{
534 qeth_flush_local_addrs4(card);
535 qeth_flush_local_addrs6(card);
536}
537
538static void qeth_add_local_addrs4(struct qeth_card *card,
539 struct qeth_ipacmd_local_addrs4 *cmd)
540{
541 unsigned int i;
542
543 if (cmd->addr_length !=
544 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
545 dev_err_ratelimited(&card->gdev->dev,
546 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
547 cmd->addr_length);
548 return;
549 }
550
551 spin_lock(&card->local_addrs4_lock);
552 for (i = 0; i < cmd->count; i++) {
553 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
554 struct qeth_local_addr *addr;
555 bool duplicate = false;
556
557 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
558 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
559 duplicate = true;
560 break;
561 }
562 }
563
564 if (duplicate)
565 continue;
566
567 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
568 if (!addr) {
569 dev_err(&card->gdev->dev,
570 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
571 &cmd->addrs[i].addr);
572 continue;
573 }
574
575 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
576 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
577 }
578 spin_unlock(&card->local_addrs4_lock);
579}
580
581static void qeth_add_local_addrs6(struct qeth_card *card,
582 struct qeth_ipacmd_local_addrs6 *cmd)
583{
584 unsigned int i;
585
586 if (cmd->addr_length !=
587 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
588 dev_err_ratelimited(&card->gdev->dev,
589 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
590 cmd->addr_length);
591 return;
592 }
593
594 spin_lock(&card->local_addrs6_lock);
595 for (i = 0; i < cmd->count; i++) {
596 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
597 struct qeth_local_addr *addr;
598 bool duplicate = false;
599
600 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
601 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
602 duplicate = true;
603 break;
604 }
605 }
606
607 if (duplicate)
608 continue;
609
610 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
611 if (!addr) {
612 dev_err(&card->gdev->dev,
613 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
614 &cmd->addrs[i].addr);
615 continue;
616 }
617
618 addr->addr = cmd->addrs[i].addr;
619 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
620 }
621 spin_unlock(&card->local_addrs6_lock);
622}
623
624static void qeth_del_local_addrs4(struct qeth_card *card,
625 struct qeth_ipacmd_local_addrs4 *cmd)
626{
627 unsigned int i;
628
629 if (cmd->addr_length !=
630 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
631 dev_err_ratelimited(&card->gdev->dev,
632 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
633 cmd->addr_length);
634 return;
635 }
636
637 spin_lock(&card->local_addrs4_lock);
638 for (i = 0; i < cmd->count; i++) {
639 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
640 unsigned int key = ipv4_addr_hash(addr->addr);
641 struct qeth_local_addr *tmp;
642
643 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
644 if (tmp->addr.s6_addr32[3] == addr->addr) {
645 hash_del_rcu(&tmp->hnode);
646 kfree_rcu(tmp, rcu);
647 break;
648 }
649 }
650 }
651 spin_unlock(&card->local_addrs4_lock);
652}
653
654static void qeth_del_local_addrs6(struct qeth_card *card,
655 struct qeth_ipacmd_local_addrs6 *cmd)
656{
657 unsigned int i;
658
659 if (cmd->addr_length !=
660 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
661 dev_err_ratelimited(&card->gdev->dev,
662 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
663 cmd->addr_length);
664 return;
665 }
666
667 spin_lock(&card->local_addrs6_lock);
668 for (i = 0; i < cmd->count; i++) {
669 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
670 u32 key = ipv6_addr_hash(&addr->addr);
671 struct qeth_local_addr *tmp;
672
673 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
674 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
675 hash_del_rcu(&tmp->hnode);
676 kfree_rcu(tmp, rcu);
677 break;
678 }
679 }
680 }
681 spin_unlock(&card->local_addrs6_lock);
682}
683
684static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
685 struct sk_buff *skb)
686{
687 struct qeth_local_addr *tmp;
688 bool is_local = false;
689 unsigned int key;
690 __be32 next_hop;
691
692 if (hash_empty(card->local_addrs4))
693 return false;
694
695 rcu_read_lock();
696 next_hop = qeth_next_hop_v4_rcu(skb,
697 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
698 key = ipv4_addr_hash(next_hop);
699
700 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
701 if (tmp->addr.s6_addr32[3] == next_hop) {
702 is_local = true;
703 break;
704 }
705 }
706 rcu_read_unlock();
707
708 return is_local;
709}
710
711static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
712 struct sk_buff *skb)
713{
714 struct qeth_local_addr *tmp;
715 struct in6_addr *next_hop;
716 bool is_local = false;
717 u32 key;
718
719 if (hash_empty(card->local_addrs6))
720 return false;
721
722 rcu_read_lock();
723 next_hop = qeth_next_hop_v6_rcu(skb,
724 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
725 key = ipv6_addr_hash(next_hop);
726
727 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
728 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
729 is_local = true;
730 break;
731 }
732 }
733 rcu_read_unlock();
734
735 return is_local;
736}
737
738static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
739{
740 struct qeth_card *card = m->private;
741 struct qeth_local_addr *tmp;
742 unsigned int i;
743
744 rcu_read_lock();
745 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
746 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
747 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
748 seq_printf(m, "%pI6c\n", &tmp->addr);
749 rcu_read_unlock();
750
751 return 0;
752}
753
754DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
755
756static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
757 struct qeth_card *card)
758{
759 const char *ipa_name;
760 int com = cmd->hdr.command;
761
762 ipa_name = qeth_get_ipa_cmd_name(com);
763
764 if (rc)
765 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
766 ipa_name, com, CARD_DEVID(card), rc,
767 qeth_get_ipa_msg(rc));
768 else
769 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
770 ipa_name, com, CARD_DEVID(card));
771}
772
773static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
774 struct qeth_ipa_cmd *cmd)
775{
776 QETH_CARD_TEXT(card, 5, "chkipad");
777
778 if (IS_IPA_REPLY(cmd)) {
779 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
780 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
781 return cmd;
782 }
783
784
785 switch (cmd->hdr.command) {
786 case IPA_CMD_STOPLAN:
787 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
788 dev_err(&card->gdev->dev,
789 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
790 netdev_name(card->dev));
791
792 qeth_schedule_recovery(card);
793 } else {
794
795 dev_warn(&card->gdev->dev,
796 "The link for interface %s on CHPID 0x%X failed\n",
797 netdev_name(card->dev), card->info.chpid);
798 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
799 netif_carrier_off(card->dev);
800 }
801 return NULL;
802 case IPA_CMD_STARTLAN:
803 dev_info(&card->gdev->dev,
804 "The link for %s on CHPID 0x%X has been restored\n",
805 netdev_name(card->dev), card->info.chpid);
806 if (card->info.hwtrap)
807 card->info.hwtrap = 2;
808 qeth_schedule_recovery(card);
809 return NULL;
810 case IPA_CMD_SETBRIDGEPORT_IQD:
811 case IPA_CMD_SETBRIDGEPORT_OSA:
812 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
813 if (card->discipline->control_event_handler(card, cmd))
814 return cmd;
815 return NULL;
816 case IPA_CMD_REGISTER_LOCAL_ADDR:
817 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
818 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
819 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
820 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
821
822 QETH_CARD_TEXT(card, 3, "irla");
823 return NULL;
824 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
825 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
826 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
827 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
828 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
829
830 QETH_CARD_TEXT(card, 3, "urla");
831 return NULL;
832 default:
833 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
834 return cmd;
835 }
836}
837
838static void qeth_clear_ipacmd_list(struct qeth_card *card)
839{
840 struct qeth_cmd_buffer *iob;
841 unsigned long flags;
842
843 QETH_CARD_TEXT(card, 4, "clipalst");
844
845 spin_lock_irqsave(&card->lock, flags);
846 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
847 qeth_notify_cmd(iob, -ECANCELED);
848 spin_unlock_irqrestore(&card->lock, flags);
849}
850
851static int qeth_check_idx_response(struct qeth_card *card,
852 unsigned char *buffer)
853{
854 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
855 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
856 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
857 buffer[4]);
858 QETH_CARD_TEXT(card, 2, "ckidxres");
859 QETH_CARD_TEXT(card, 2, " idxterm");
860 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
861 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
862 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
863 dev_err(&card->gdev->dev,
864 "The device does not support the configured transport mode\n");
865 return -EPROTONOSUPPORT;
866 }
867 return -EIO;
868 }
869 return 0;
870}
871
872static void qeth_release_buffer_cb(struct qeth_card *card,
873 struct qeth_cmd_buffer *iob,
874 unsigned int data_length)
875{
876 qeth_put_cmd(iob);
877}
878
879static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
880{
881 qeth_notify_cmd(iob, rc);
882 qeth_put_cmd(iob);
883}
884
885static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
886 unsigned int length,
887 unsigned int ccws, long timeout)
888{
889 struct qeth_cmd_buffer *iob;
890
891 if (length > QETH_BUFSIZE)
892 return NULL;
893
894 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
895 if (!iob)
896 return NULL;
897
898 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
899 GFP_KERNEL | GFP_DMA);
900 if (!iob->data) {
901 kfree(iob);
902 return NULL;
903 }
904
905 init_completion(&iob->done);
906 spin_lock_init(&iob->lock);
907 refcount_set(&iob->ref_count, 1);
908 iob->channel = channel;
909 iob->timeout = timeout;
910 iob->length = length;
911 return iob;
912}
913
914static void qeth_issue_next_read_cb(struct qeth_card *card,
915 struct qeth_cmd_buffer *iob,
916 unsigned int data_length)
917{
918 struct qeth_cmd_buffer *request = NULL;
919 struct qeth_ipa_cmd *cmd = NULL;
920 struct qeth_reply *reply = NULL;
921 struct qeth_cmd_buffer *tmp;
922 unsigned long flags;
923 int rc = 0;
924
925 QETH_CARD_TEXT(card, 4, "sndctlcb");
926 rc = qeth_check_idx_response(card, iob->data);
927 switch (rc) {
928 case 0:
929 break;
930 case -EIO:
931 qeth_schedule_recovery(card);
932 fallthrough;
933 default:
934 qeth_clear_ipacmd_list(card);
935 goto err_idx;
936 }
937
938 cmd = __ipa_reply(iob);
939 if (cmd) {
940 cmd = qeth_check_ipa_data(card, cmd);
941 if (!cmd)
942 goto out;
943 }
944
945
946 spin_lock_irqsave(&card->lock, flags);
947 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
948 if (tmp->match && tmp->match(tmp, iob)) {
949 request = tmp;
950
951 qeth_get_cmd(request);
952 break;
953 }
954 }
955 spin_unlock_irqrestore(&card->lock, flags);
956
957 if (!request)
958 goto out;
959
960 reply = &request->reply;
961 if (!reply->callback) {
962 rc = 0;
963 goto no_callback;
964 }
965
966 spin_lock_irqsave(&request->lock, flags);
967 if (request->rc)
968
969 rc = request->rc;
970 else
971 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
972 (unsigned long)iob);
973 spin_unlock_irqrestore(&request->lock, flags);
974
975no_callback:
976 if (rc <= 0)
977 qeth_notify_cmd(request, rc);
978 qeth_put_cmd(request);
979out:
980 memcpy(&card->seqno.pdu_hdr_ack,
981 QETH_PDU_HEADER_SEQ_NO(iob->data),
982 QETH_SEQ_NO_LENGTH);
983 __qeth_issue_next_read(card);
984err_idx:
985 qeth_put_cmd(iob);
986}
987
988static int qeth_set_thread_start_bit(struct qeth_card *card,
989 unsigned long thread)
990{
991 unsigned long flags;
992 int rc = 0;
993
994 spin_lock_irqsave(&card->thread_mask_lock, flags);
995 if (!(card->thread_allowed_mask & thread))
996 rc = -EPERM;
997 else if (card->thread_start_mask & thread)
998 rc = -EBUSY;
999 else
1000 card->thread_start_mask |= thread;
1001 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1002
1003 return rc;
1004}
1005
1006static void qeth_clear_thread_start_bit(struct qeth_card *card,
1007 unsigned long thread)
1008{
1009 unsigned long flags;
1010
1011 spin_lock_irqsave(&card->thread_mask_lock, flags);
1012 card->thread_start_mask &= ~thread;
1013 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1014 wake_up(&card->wait_q);
1015}
1016
1017static void qeth_clear_thread_running_bit(struct qeth_card *card,
1018 unsigned long thread)
1019{
1020 unsigned long flags;
1021
1022 spin_lock_irqsave(&card->thread_mask_lock, flags);
1023 card->thread_running_mask &= ~thread;
1024 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1025 wake_up_all(&card->wait_q);
1026}
1027
1028static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1029{
1030 unsigned long flags;
1031 int rc = 0;
1032
1033 spin_lock_irqsave(&card->thread_mask_lock, flags);
1034 if (card->thread_start_mask & thread) {
1035 if ((card->thread_allowed_mask & thread) &&
1036 !(card->thread_running_mask & thread)) {
1037 rc = 1;
1038 card->thread_start_mask &= ~thread;
1039 card->thread_running_mask |= thread;
1040 } else
1041 rc = -EPERM;
1042 }
1043 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1044 return rc;
1045}
1046
1047static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1048{
1049 int rc = 0;
1050
1051 wait_event(card->wait_q,
1052 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1053 return rc;
1054}
1055
1056int qeth_schedule_recovery(struct qeth_card *card)
1057{
1058 int rc;
1059
1060 QETH_CARD_TEXT(card, 2, "startrec");
1061
1062 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1063 if (!rc)
1064 schedule_work(&card->kernel_thread_starter);
1065
1066 return rc;
1067}
1068
1069static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1070 struct irb *irb)
1071{
1072 int dstat, cstat;
1073 char *sense;
1074
1075 sense = (char *) irb->ecw;
1076 cstat = irb->scsw.cmd.cstat;
1077 dstat = irb->scsw.cmd.dstat;
1078
1079 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1080 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1081 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1082 QETH_CARD_TEXT(card, 2, "CGENCHK");
1083 dev_warn(&cdev->dev, "The qeth device driver "
1084 "failed to recover an error on the device\n");
1085 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1086 CCW_DEVID(cdev), dstat, cstat);
1087 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1088 16, 1, irb, 64, 1);
1089 return -EIO;
1090 }
1091
1092 if (dstat & DEV_STAT_UNIT_CHECK) {
1093 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1094 SENSE_RESETTING_EVENT_FLAG) {
1095 QETH_CARD_TEXT(card, 2, "REVIND");
1096 return -EIO;
1097 }
1098 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1099 SENSE_COMMAND_REJECT_FLAG) {
1100 QETH_CARD_TEXT(card, 2, "CMDREJi");
1101 return -EIO;
1102 }
1103 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1104 QETH_CARD_TEXT(card, 2, "AFFE");
1105 return -EIO;
1106 }
1107 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1108 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1109 return 0;
1110 }
1111 QETH_CARD_TEXT(card, 2, "DGENCHK");
1112 return -EIO;
1113 }
1114 return 0;
1115}
1116
1117static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
1118 struct irb *irb)
1119{
1120 if (!IS_ERR(irb))
1121 return 0;
1122
1123 switch (PTR_ERR(irb)) {
1124 case -EIO:
1125 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1126 CCW_DEVID(cdev));
1127 QETH_CARD_TEXT(card, 2, "ckirberr");
1128 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1129 return -EIO;
1130 case -ETIMEDOUT:
1131 dev_warn(&cdev->dev, "A hardware operation timed out"
1132 " on the device\n");
1133 QETH_CARD_TEXT(card, 2, "ckirberr");
1134 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1135 return -ETIMEDOUT;
1136 default:
1137 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1138 PTR_ERR(irb), CCW_DEVID(cdev));
1139 QETH_CARD_TEXT(card, 2, "ckirberr");
1140 QETH_CARD_TEXT(card, 2, " rc???");
1141 return PTR_ERR(irb);
1142 }
1143}
1144
1145static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1146 struct irb *irb)
1147{
1148 int rc;
1149 int cstat, dstat;
1150 struct qeth_cmd_buffer *iob = NULL;
1151 struct ccwgroup_device *gdev;
1152 struct qeth_channel *channel;
1153 struct qeth_card *card;
1154
1155
1156 gdev = dev_get_drvdata(&cdev->dev);
1157 card = dev_get_drvdata(&gdev->dev);
1158
1159 QETH_CARD_TEXT(card, 5, "irq");
1160
1161 if (card->read.ccwdev == cdev) {
1162 channel = &card->read;
1163 QETH_CARD_TEXT(card, 5, "read");
1164 } else if (card->write.ccwdev == cdev) {
1165 channel = &card->write;
1166 QETH_CARD_TEXT(card, 5, "write");
1167 } else {
1168 channel = &card->data;
1169 QETH_CARD_TEXT(card, 5, "data");
1170 }
1171
1172 if (intparm == 0) {
1173 QETH_CARD_TEXT(card, 5, "irqunsol");
1174 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1175 QETH_CARD_TEXT(card, 5, "irqunexp");
1176
1177 dev_err(&cdev->dev,
1178 "Received IRQ with intparm %lx, expected %px\n",
1179 intparm, channel->active_cmd);
1180 if (channel->active_cmd)
1181 qeth_cancel_cmd(channel->active_cmd, -EIO);
1182 } else {
1183 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1184 }
1185
1186 qeth_unlock_channel(card, channel);
1187
1188 rc = qeth_check_irb_error(card, cdev, irb);
1189 if (rc) {
1190
1191 if (iob)
1192 qeth_cancel_cmd(iob, rc);
1193 return;
1194 }
1195
1196 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1197 channel->state = CH_STATE_STOPPED;
1198 wake_up(&card->wait_q);
1199 }
1200
1201 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1202 channel->state = CH_STATE_HALTED;
1203 wake_up(&card->wait_q);
1204 }
1205
1206 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1207 SCSW_FCTL_HALT_FUNC))) {
1208 qeth_cancel_cmd(iob, -ECANCELED);
1209 iob = NULL;
1210 }
1211
1212 cstat = irb->scsw.cmd.cstat;
1213 dstat = irb->scsw.cmd.dstat;
1214
1215 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1216 (dstat & DEV_STAT_UNIT_CHECK) ||
1217 (cstat)) {
1218 if (irb->esw.esw0.erw.cons) {
1219 dev_warn(&channel->ccwdev->dev,
1220 "The qeth device driver failed to recover "
1221 "an error on the device\n");
1222 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1223 CCW_DEVID(channel->ccwdev), cstat,
1224 dstat);
1225 print_hex_dump(KERN_WARNING, "qeth: irb ",
1226 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1227 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1228 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1229 }
1230
1231 rc = qeth_get_problem(card, cdev, irb);
1232 if (rc) {
1233 card->read_or_write_problem = 1;
1234 if (iob)
1235 qeth_cancel_cmd(iob, rc);
1236 qeth_clear_ipacmd_list(card);
1237 qeth_schedule_recovery(card);
1238 return;
1239 }
1240 }
1241
1242 if (iob) {
1243
1244 if (irb->scsw.cmd.count > iob->length) {
1245 qeth_cancel_cmd(iob, -EIO);
1246 return;
1247 }
1248 if (iob->callback)
1249 iob->callback(card, iob,
1250 iob->length - irb->scsw.cmd.count);
1251 }
1252}
1253
1254static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1255 struct qeth_qdio_out_buffer *buf,
1256 enum iucv_tx_notify notification)
1257{
1258 struct sk_buff *skb;
1259
1260 skb_queue_walk(&buf->skb_list, skb) {
1261 struct sock *sk = skb->sk;
1262
1263 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1264 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1265 if (sk && sk->sk_family == PF_IUCV)
1266 iucv_sk(sk)->sk_txnotify(sk, notification);
1267 }
1268}
1269
1270static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1271 struct qeth_qdio_out_buffer *buf, bool error,
1272 int budget)
1273{
1274 struct sk_buff *skb;
1275
1276
1277 if (buf->next_element_to_fill == 0)
1278 return;
1279
1280 QETH_TXQ_STAT_INC(queue, bufs);
1281 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1282 if (error) {
1283 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1284 } else {
1285 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1286 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1287 }
1288
1289 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1290 unsigned int bytes = qdisc_pkt_len(skb);
1291 bool is_tso = skb_is_gso(skb);
1292 unsigned int packets;
1293
1294 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1295 if (!error) {
1296 if (skb->ip_summed == CHECKSUM_PARTIAL)
1297 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1298 if (skb_is_nonlinear(skb))
1299 QETH_TXQ_STAT_INC(queue, skbs_sg);
1300 if (is_tso) {
1301 QETH_TXQ_STAT_INC(queue, skbs_tso);
1302 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1303 }
1304 }
1305
1306 napi_consume_skb(skb, budget);
1307 }
1308}
1309
1310static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1311 struct qeth_qdio_out_buffer *buf,
1312 bool error, int budget)
1313{
1314 int i;
1315
1316
1317 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
1318 atomic_dec(&queue->set_pci_flags_count);
1319 QETH_TXQ_STAT_INC(queue, completion_irq);
1320 }
1321
1322 qeth_tx_complete_buf(queue, buf, error, budget);
1323
1324 for (i = 0; i < queue->max_elements; ++i) {
1325 void *data = phys_to_virt(buf->buffer->element[i].addr);
1326
1327 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
1328 kmem_cache_free(qeth_core_header_cache, data);
1329 }
1330
1331 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1332 buf->next_element_to_fill = 0;
1333 buf->frames = 0;
1334 buf->bytes = 0;
1335 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1336}
1337
1338static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1339{
1340 if (buf->aob)
1341 qdio_release_aob(buf->aob);
1342 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1343}
1344
1345static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1346 struct qeth_qdio_out_q *queue,
1347 bool drain, int budget)
1348{
1349 struct qeth_qdio_out_buffer *buf, *tmp;
1350
1351 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
1352 struct qeth_qaob_priv1 *priv;
1353 struct qaob *aob = buf->aob;
1354 enum iucv_tx_notify notify;
1355 unsigned int i;
1356
1357 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1358 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
1359 QETH_CARD_TEXT(card, 5, "fp");
1360 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1361
1362 notify = drain ? TX_NOTIFY_GENERALERROR :
1363 qeth_compute_cq_notification(aob->aorc, 1);
1364 qeth_notify_skbs(queue, buf, notify);
1365 qeth_tx_complete_buf(queue, buf, drain, budget);
1366
1367 for (i = 0;
1368 i < aob->sb_count && i < queue->max_elements;
1369 i++) {
1370 void *data = phys_to_virt(aob->sba[i]);
1371
1372 if (test_bit(i, buf->from_kmem_cache) && data)
1373 kmem_cache_free(qeth_core_header_cache,
1374 data);
1375 }
1376
1377 list_del(&buf->list_entry);
1378 qeth_free_out_buf(buf);
1379 }
1380 }
1381}
1382
1383static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1384{
1385 int j;
1386
1387 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
1388
1389 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1390 if (!q->bufs[j])
1391 continue;
1392
1393 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1394 if (free) {
1395 qeth_free_out_buf(q->bufs[j]);
1396 q->bufs[j] = NULL;
1397 }
1398 }
1399}
1400
1401static void qeth_drain_output_queues(struct qeth_card *card)
1402{
1403 int i;
1404
1405 QETH_CARD_TEXT(card, 2, "clearqdbf");
1406
1407 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1408 if (card->qdio.out_qs[i])
1409 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1410 }
1411}
1412
1413static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1414{
1415 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1416
1417 if (card->qdio.no_out_queues == max)
1418 return;
1419
1420 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1421 qeth_free_qdio_queues(card);
1422
1423 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1424 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1425
1426 card->qdio.no_out_queues = max;
1427}
1428
1429static int qeth_update_from_chp_desc(struct qeth_card *card)
1430{
1431 struct ccw_device *ccwdev;
1432 struct channel_path_desc_fmt0 *chp_dsc;
1433
1434 QETH_CARD_TEXT(card, 2, "chp_desc");
1435
1436 ccwdev = card->data.ccwdev;
1437 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1438 if (!chp_dsc)
1439 return -ENOMEM;
1440
1441 card->info.func_level = 0x4100 + chp_dsc->desc;
1442
1443 if (IS_OSD(card) || IS_OSX(card))
1444
1445 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1446
1447 kfree(chp_dsc);
1448 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1449 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1450 return 0;
1451}
1452
1453static void qeth_init_qdio_info(struct qeth_card *card)
1454{
1455 QETH_CARD_TEXT(card, 4, "intqdinf");
1456 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1457 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1458 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1459
1460
1461 card->qdio.no_in_queues = 1;
1462 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1463 if (IS_IQD(card))
1464 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1465 else
1466 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1467 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1468 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1469 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1470}
1471
1472static void qeth_set_initial_options(struct qeth_card *card)
1473{
1474 card->options.route4.type = NO_ROUTER;
1475 card->options.route6.type = NO_ROUTER;
1476 card->options.isolation = ISOLATION_MODE_NONE;
1477 card->options.cq = QETH_CQ_DISABLED;
1478 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1479}
1480
1481static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1482{
1483 unsigned long flags;
1484 int rc = 0;
1485
1486 spin_lock_irqsave(&card->thread_mask_lock, flags);
1487 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1488 (u8) card->thread_start_mask,
1489 (u8) card->thread_allowed_mask,
1490 (u8) card->thread_running_mask);
1491 rc = (card->thread_start_mask & thread);
1492 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1493 return rc;
1494}
1495
1496static int qeth_do_reset(void *data);
1497static void qeth_start_kernel_thread(struct work_struct *work)
1498{
1499 struct task_struct *ts;
1500 struct qeth_card *card = container_of(work, struct qeth_card,
1501 kernel_thread_starter);
1502 QETH_CARD_TEXT(card, 2, "strthrd");
1503
1504 if (card->read.state != CH_STATE_UP &&
1505 card->write.state != CH_STATE_UP)
1506 return;
1507 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1508 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1509 if (IS_ERR(ts)) {
1510 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1511 qeth_clear_thread_running_bit(card,
1512 QETH_RECOVER_THREAD);
1513 }
1514 }
1515}
1516
1517static void qeth_buffer_reclaim_work(struct work_struct *);
1518static void qeth_setup_card(struct qeth_card *card)
1519{
1520 QETH_CARD_TEXT(card, 2, "setupcrd");
1521
1522 card->info.type = CARD_RDEV(card)->id.driver_info;
1523 card->state = CARD_STATE_DOWN;
1524 spin_lock_init(&card->lock);
1525 spin_lock_init(&card->thread_mask_lock);
1526 mutex_init(&card->conf_mutex);
1527 mutex_init(&card->discipline_mutex);
1528 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1529 INIT_LIST_HEAD(&card->cmd_waiter_list);
1530 init_waitqueue_head(&card->wait_q);
1531 qeth_set_initial_options(card);
1532
1533 INIT_LIST_HEAD(&card->ipato.entries);
1534 qeth_init_qdio_info(card);
1535 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1536 hash_init(card->rx_mode_addrs);
1537 hash_init(card->local_addrs4);
1538 hash_init(card->local_addrs6);
1539 spin_lock_init(&card->local_addrs4_lock);
1540 spin_lock_init(&card->local_addrs6_lock);
1541}
1542
1543static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1544{
1545 struct qeth_card *card = container_of(slr, struct qeth_card,
1546 qeth_service_level);
1547 if (card->info.mcl_level[0])
1548 seq_printf(m, "qeth: %s firmware level %s\n",
1549 CARD_BUS_ID(card), card->info.mcl_level);
1550}
1551
1552static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1553{
1554 struct qeth_card *card;
1555
1556 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1557 card = kzalloc(sizeof(*card), GFP_KERNEL);
1558 if (!card)
1559 goto out;
1560 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1561
1562 card->gdev = gdev;
1563 dev_set_drvdata(&gdev->dev, card);
1564 CARD_RDEV(card) = gdev->cdev[0];
1565 CARD_WDEV(card) = gdev->cdev[1];
1566 CARD_DDEV(card) = gdev->cdev[2];
1567
1568 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1569 dev_name(&gdev->dev));
1570 if (!card->event_wq)
1571 goto out_wq;
1572
1573 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1574 if (!card->read_cmd)
1575 goto out_read_cmd;
1576
1577 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1578 qeth_debugfs_root);
1579 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1580 &qeth_debugfs_local_addr_fops);
1581
1582 card->qeth_service_level.seq_print = qeth_core_sl_print;
1583 register_service_level(&card->qeth_service_level);
1584 return card;
1585
1586out_read_cmd:
1587 destroy_workqueue(card->event_wq);
1588out_wq:
1589 dev_set_drvdata(&gdev->dev, NULL);
1590 kfree(card);
1591out:
1592 return NULL;
1593}
1594
1595static int qeth_clear_channel(struct qeth_card *card,
1596 struct qeth_channel *channel)
1597{
1598 int rc;
1599
1600 QETH_CARD_TEXT(card, 3, "clearch");
1601 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1602 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1603 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1604
1605 if (rc)
1606 return rc;
1607 rc = wait_event_interruptible_timeout(card->wait_q,
1608 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1609 if (rc == -ERESTARTSYS)
1610 return rc;
1611 if (channel->state != CH_STATE_STOPPED)
1612 return -ETIME;
1613 channel->state = CH_STATE_DOWN;
1614 return 0;
1615}
1616
1617static int qeth_halt_channel(struct qeth_card *card,
1618 struct qeth_channel *channel)
1619{
1620 int rc;
1621
1622 QETH_CARD_TEXT(card, 3, "haltch");
1623 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1624 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1625 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1626
1627 if (rc)
1628 return rc;
1629 rc = wait_event_interruptible_timeout(card->wait_q,
1630 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1631 if (rc == -ERESTARTSYS)
1632 return rc;
1633 if (channel->state != CH_STATE_HALTED)
1634 return -ETIME;
1635 return 0;
1636}
1637
1638static int qeth_stop_channel(struct qeth_channel *channel)
1639{
1640 struct ccw_device *cdev = channel->ccwdev;
1641 int rc;
1642
1643 rc = ccw_device_set_offline(cdev);
1644
1645 spin_lock_irq(get_ccwdev_lock(cdev));
1646 if (channel->active_cmd)
1647 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1648 channel->active_cmd);
1649
1650 cdev->handler = NULL;
1651 spin_unlock_irq(get_ccwdev_lock(cdev));
1652
1653 return rc;
1654}
1655
1656static int qeth_start_channel(struct qeth_channel *channel)
1657{
1658 struct ccw_device *cdev = channel->ccwdev;
1659 int rc;
1660
1661 channel->state = CH_STATE_DOWN;
1662 xchg(&channel->active_cmd, NULL);
1663
1664 spin_lock_irq(get_ccwdev_lock(cdev));
1665 cdev->handler = qeth_irq;
1666 spin_unlock_irq(get_ccwdev_lock(cdev));
1667
1668 rc = ccw_device_set_online(cdev);
1669 if (rc)
1670 goto err;
1671
1672 return 0;
1673
1674err:
1675 spin_lock_irq(get_ccwdev_lock(cdev));
1676 cdev->handler = NULL;
1677 spin_unlock_irq(get_ccwdev_lock(cdev));
1678 return rc;
1679}
1680
1681static int qeth_halt_channels(struct qeth_card *card)
1682{
1683 int rc1 = 0, rc2 = 0, rc3 = 0;
1684
1685 QETH_CARD_TEXT(card, 3, "haltchs");
1686 rc1 = qeth_halt_channel(card, &card->read);
1687 rc2 = qeth_halt_channel(card, &card->write);
1688 rc3 = qeth_halt_channel(card, &card->data);
1689 if (rc1)
1690 return rc1;
1691 if (rc2)
1692 return rc2;
1693 return rc3;
1694}
1695
1696static int qeth_clear_channels(struct qeth_card *card)
1697{
1698 int rc1 = 0, rc2 = 0, rc3 = 0;
1699
1700 QETH_CARD_TEXT(card, 3, "clearchs");
1701 rc1 = qeth_clear_channel(card, &card->read);
1702 rc2 = qeth_clear_channel(card, &card->write);
1703 rc3 = qeth_clear_channel(card, &card->data);
1704 if (rc1)
1705 return rc1;
1706 if (rc2)
1707 return rc2;
1708 return rc3;
1709}
1710
1711static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1712{
1713 int rc = 0;
1714
1715 QETH_CARD_TEXT(card, 3, "clhacrd");
1716
1717 if (halt)
1718 rc = qeth_halt_channels(card);
1719 if (rc)
1720 return rc;
1721 return qeth_clear_channels(card);
1722}
1723
1724static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1725{
1726 int rc = 0;
1727
1728 QETH_CARD_TEXT(card, 3, "qdioclr");
1729 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1730 QETH_QDIO_CLEANING)) {
1731 case QETH_QDIO_ESTABLISHED:
1732 if (IS_IQD(card))
1733 rc = qdio_shutdown(CARD_DDEV(card),
1734 QDIO_FLAG_CLEANUP_USING_HALT);
1735 else
1736 rc = qdio_shutdown(CARD_DDEV(card),
1737 QDIO_FLAG_CLEANUP_USING_CLEAR);
1738 if (rc)
1739 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1740 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1741 break;
1742 case QETH_QDIO_CLEANING:
1743 return rc;
1744 default:
1745 break;
1746 }
1747 rc = qeth_clear_halt_card(card, use_halt);
1748 if (rc)
1749 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1750 return rc;
1751}
1752
1753static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1754{
1755 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1756 struct diag26c_vnic_resp *response = NULL;
1757 struct diag26c_vnic_req *request = NULL;
1758 struct ccw_dev_id id;
1759 char userid[80];
1760 int rc = 0;
1761
1762 QETH_CARD_TEXT(card, 2, "vmlayer");
1763
1764 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1765 if (rc)
1766 goto out;
1767
1768 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1769 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1770 if (!request || !response) {
1771 rc = -ENOMEM;
1772 goto out;
1773 }
1774
1775 ccw_device_get_id(CARD_RDEV(card), &id);
1776 request->resp_buf_len = sizeof(*response);
1777 request->resp_version = DIAG26C_VERSION6_VM65918;
1778 request->req_format = DIAG26C_VNIC_INFO;
1779 ASCEBC(userid, 8);
1780 memcpy(&request->sys_name, userid, 8);
1781 request->devno = id.devno;
1782
1783 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1784 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1785 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1786 if (rc)
1787 goto out;
1788 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1789
1790 if (request->resp_buf_len < sizeof(*response) ||
1791 response->version != request->resp_version) {
1792 rc = -EIO;
1793 goto out;
1794 }
1795
1796 if (response->protocol == VNIC_INFO_PROT_L2)
1797 disc = QETH_DISCIPLINE_LAYER2;
1798 else if (response->protocol == VNIC_INFO_PROT_L3)
1799 disc = QETH_DISCIPLINE_LAYER3;
1800
1801out:
1802 kfree(response);
1803 kfree(request);
1804 if (rc)
1805 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1806 return disc;
1807}
1808
1809
1810static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1811{
1812 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1813
1814 if (IS_OSM(card))
1815 disc = QETH_DISCIPLINE_LAYER2;
1816 else if (IS_VM_NIC(card))
1817 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1818 qeth_vm_detect_layer(card);
1819
1820 switch (disc) {
1821 case QETH_DISCIPLINE_LAYER2:
1822 QETH_CARD_TEXT(card, 3, "force l2");
1823 break;
1824 case QETH_DISCIPLINE_LAYER3:
1825 QETH_CARD_TEXT(card, 3, "force l3");
1826 break;
1827 default:
1828 QETH_CARD_TEXT(card, 3, "force no");
1829 }
1830
1831 return disc;
1832}
1833
1834static void qeth_set_blkt_defaults(struct qeth_card *card)
1835{
1836 QETH_CARD_TEXT(card, 2, "cfgblkt");
1837
1838 if (card->info.use_v1_blkt) {
1839 card->info.blkt.time_total = 0;
1840 card->info.blkt.inter_packet = 0;
1841 card->info.blkt.inter_packet_jumbo = 0;
1842 } else {
1843 card->info.blkt.time_total = 250;
1844 card->info.blkt.inter_packet = 5;
1845 card->info.blkt.inter_packet_jumbo = 15;
1846 }
1847}
1848
1849static void qeth_idx_init(struct qeth_card *card)
1850{
1851 memset(&card->seqno, 0, sizeof(card->seqno));
1852
1853 card->token.issuer_rm_w = 0x00010103UL;
1854 card->token.cm_filter_w = 0x00010108UL;
1855 card->token.cm_connection_w = 0x0001010aUL;
1856 card->token.ulp_filter_w = 0x0001010bUL;
1857 card->token.ulp_connection_w = 0x0001010dUL;
1858
1859 switch (card->info.type) {
1860 case QETH_CARD_TYPE_IQD:
1861 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1862 break;
1863 case QETH_CARD_TYPE_OSD:
1864 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1865 break;
1866 default:
1867 break;
1868 }
1869}
1870
1871static void qeth_idx_finalize_cmd(struct qeth_card *card,
1872 struct qeth_cmd_buffer *iob)
1873{
1874 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1875 QETH_SEQ_NO_LENGTH);
1876 if (iob->channel == &card->write)
1877 card->seqno.trans_hdr++;
1878}
1879
1880static int qeth_peer_func_level(int level)
1881{
1882 if ((level & 0xff) == 8)
1883 return (level & 0xff) + 0x400;
1884 if (((level >> 8) & 3) == 1)
1885 return (level & 0xff) + 0x200;
1886 return level;
1887}
1888
1889static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1890 struct qeth_cmd_buffer *iob)
1891{
1892 qeth_idx_finalize_cmd(card, iob);
1893
1894 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1895 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1896 card->seqno.pdu_hdr++;
1897 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1898 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1899
1900 iob->callback = qeth_release_buffer_cb;
1901}
1902
1903static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1904 struct qeth_cmd_buffer *reply)
1905{
1906
1907 return !IS_IPA(reply->data);
1908}
1909
1910static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1911 const void *data,
1912 unsigned int data_length)
1913{
1914 struct qeth_cmd_buffer *iob;
1915
1916 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1917 if (!iob)
1918 return NULL;
1919
1920 memcpy(iob->data, data, data_length);
1921 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1922 iob->data);
1923 iob->finalize = qeth_mpc_finalize_cmd;
1924 iob->match = qeth_mpc_match_reply;
1925 return iob;
1926}
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950static int qeth_send_control_data(struct qeth_card *card,
1951 struct qeth_cmd_buffer *iob,
1952 int (*reply_cb)(struct qeth_card *cb_card,
1953 struct qeth_reply *cb_reply,
1954 unsigned long cb_cmd),
1955 void *reply_param)
1956{
1957 struct qeth_channel *channel = iob->channel;
1958 struct qeth_reply *reply = &iob->reply;
1959 long timeout = iob->timeout;
1960 int rc;
1961
1962 QETH_CARD_TEXT(card, 2, "sendctl");
1963
1964 reply->callback = reply_cb;
1965 reply->param = reply_param;
1966
1967 timeout = wait_event_interruptible_timeout(card->wait_q,
1968 qeth_trylock_channel(channel, iob),
1969 timeout);
1970 if (timeout <= 0) {
1971 qeth_put_cmd(iob);
1972 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1973 }
1974
1975 if (iob->finalize)
1976 iob->finalize(card, iob);
1977 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1978
1979 qeth_enqueue_cmd(card, iob);
1980
1981
1982 qeth_get_cmd(iob);
1983
1984 QETH_CARD_TEXT(card, 6, "noirqpnd");
1985 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1986 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1987 (addr_t) iob, 0, 0, timeout);
1988 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1989 if (rc) {
1990 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1991 CARD_DEVID(card), rc);
1992 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1993 qeth_dequeue_cmd(card, iob);
1994 qeth_put_cmd(iob);
1995 qeth_unlock_channel(card, channel);
1996 goto out;
1997 }
1998
1999 timeout = wait_for_completion_interruptible_timeout(&iob->done,
2000 timeout);
2001 if (timeout <= 0)
2002 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
2003
2004 qeth_dequeue_cmd(card, iob);
2005
2006 if (reply_cb) {
2007
2008 spin_lock_irq(&iob->lock);
2009 if (rc)
2010
2011 iob->rc = rc;
2012 spin_unlock_irq(&iob->lock);
2013 }
2014
2015 if (!rc)
2016 rc = iob->rc;
2017
2018out:
2019 qeth_put_cmd(iob);
2020 return rc;
2021}
2022
2023struct qeth_node_desc {
2024 struct node_descriptor nd1;
2025 struct node_descriptor nd2;
2026 struct node_descriptor nd3;
2027};
2028
2029static void qeth_read_conf_data_cb(struct qeth_card *card,
2030 struct qeth_cmd_buffer *iob,
2031 unsigned int data_length)
2032{
2033 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2034 int rc = 0;
2035 u8 *tag;
2036
2037 QETH_CARD_TEXT(card, 2, "cfgunit");
2038
2039 if (data_length < sizeof(*nd)) {
2040 rc = -EINVAL;
2041 goto out;
2042 }
2043
2044 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2045 nd->nd1.plant[1] == _ascebc['M'];
2046 tag = (u8 *)&nd->nd1.tag;
2047 card->info.chpid = tag[0];
2048 card->info.unit_addr2 = tag[1];
2049
2050 tag = (u8 *)&nd->nd2.tag;
2051 card->info.cula = tag[1];
2052
2053 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2054 nd->nd3.model[1] == 0xF0 &&
2055 nd->nd3.model[2] >= 0xF1 &&
2056 nd->nd3.model[2] <= 0xF4;
2057
2058out:
2059 qeth_notify_cmd(iob, rc);
2060 qeth_put_cmd(iob);
2061}
2062
2063static int qeth_read_conf_data(struct qeth_card *card)
2064{
2065 struct qeth_channel *channel = &card->data;
2066 struct qeth_cmd_buffer *iob;
2067 struct ciw *ciw;
2068
2069
2070 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2071 if (!ciw || ciw->cmd == 0)
2072 return -EOPNOTSUPP;
2073 if (ciw->count < sizeof(struct qeth_node_desc))
2074 return -EINVAL;
2075
2076 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2077 if (!iob)
2078 return -ENOMEM;
2079
2080 iob->callback = qeth_read_conf_data_cb;
2081 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2082 iob->data);
2083
2084 return qeth_send_control_data(card, iob, NULL, NULL);
2085}
2086
2087static int qeth_idx_check_activate_response(struct qeth_card *card,
2088 struct qeth_channel *channel,
2089 struct qeth_cmd_buffer *iob)
2090{
2091 int rc;
2092
2093 rc = qeth_check_idx_response(card, iob->data);
2094 if (rc)
2095 return rc;
2096
2097 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2098 return 0;
2099
2100
2101 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2102 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2103
2104 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2105 case QETH_IDX_ACT_ERR_EXCL:
2106 dev_err(&channel->ccwdev->dev,
2107 "The adapter is used exclusively by another host\n");
2108 return -EBUSY;
2109 case QETH_IDX_ACT_ERR_AUTH:
2110 case QETH_IDX_ACT_ERR_AUTH_USER:
2111 dev_err(&channel->ccwdev->dev,
2112 "Setting the device online failed because of insufficient authorization\n");
2113 return -EPERM;
2114 default:
2115 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2116 CCW_DEVID(channel->ccwdev));
2117 return -EIO;
2118 }
2119}
2120
2121static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
2122 struct qeth_cmd_buffer *iob,
2123 unsigned int data_length)
2124{
2125 struct qeth_channel *channel = iob->channel;
2126 u16 peer_level;
2127 int rc;
2128
2129 QETH_CARD_TEXT(card, 2, "idxrdcb");
2130
2131 rc = qeth_idx_check_activate_response(card, channel, iob);
2132 if (rc)
2133 goto out;
2134
2135 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2136 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2137 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2138 CCW_DEVID(channel->ccwdev),
2139 card->info.func_level, peer_level);
2140 rc = -EINVAL;
2141 goto out;
2142 }
2143
2144 memcpy(&card->token.issuer_rm_r,
2145 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2146 QETH_MPC_TOKEN_LENGTH);
2147 memcpy(&card->info.mcl_level[0],
2148 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2149
2150out:
2151 qeth_notify_cmd(iob, rc);
2152 qeth_put_cmd(iob);
2153}
2154
2155static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2156 struct qeth_cmd_buffer *iob,
2157 unsigned int data_length)
2158{
2159 struct qeth_channel *channel = iob->channel;
2160 u16 peer_level;
2161 int rc;
2162
2163 QETH_CARD_TEXT(card, 2, "idxwrcb");
2164
2165 rc = qeth_idx_check_activate_response(card, channel, iob);
2166 if (rc)
2167 goto out;
2168
2169 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2170 if ((peer_level & ~0x0100) !=
2171 qeth_peer_func_level(card->info.func_level)) {
2172 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2173 CCW_DEVID(channel->ccwdev),
2174 card->info.func_level, peer_level);
2175 rc = -EINVAL;
2176 }
2177
2178out:
2179 qeth_notify_cmd(iob, rc);
2180 qeth_put_cmd(iob);
2181}
2182
2183static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2184 struct qeth_cmd_buffer *iob)
2185{
2186 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2187 u8 port = ((u8)card->dev->dev_port) | 0x80;
2188 struct ccw1 *ccw = __ccw_from_cmd(iob);
2189
2190 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2191 iob->data);
2192 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2193 iob->finalize = qeth_idx_finalize_cmd;
2194
2195 port |= QETH_IDX_ACT_INVAL_FRAME;
2196 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2197 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2198 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2199 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2200 &card->info.func_level, 2);
2201 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2202 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2203}
2204
2205static int qeth_idx_activate_read_channel(struct qeth_card *card)
2206{
2207 struct qeth_channel *channel = &card->read;
2208 struct qeth_cmd_buffer *iob;
2209 int rc;
2210
2211 QETH_CARD_TEXT(card, 2, "idxread");
2212
2213 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2214 if (!iob)
2215 return -ENOMEM;
2216
2217 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2218 qeth_idx_setup_activate_cmd(card, iob);
2219 iob->callback = qeth_idx_activate_read_channel_cb;
2220
2221 rc = qeth_send_control_data(card, iob, NULL, NULL);
2222 if (rc)
2223 return rc;
2224
2225 channel->state = CH_STATE_UP;
2226 return 0;
2227}
2228
2229static int qeth_idx_activate_write_channel(struct qeth_card *card)
2230{
2231 struct qeth_channel *channel = &card->write;
2232 struct qeth_cmd_buffer *iob;
2233 int rc;
2234
2235 QETH_CARD_TEXT(card, 2, "idxwrite");
2236
2237 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2238 if (!iob)
2239 return -ENOMEM;
2240
2241 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2242 qeth_idx_setup_activate_cmd(card, iob);
2243 iob->callback = qeth_idx_activate_write_channel_cb;
2244
2245 rc = qeth_send_control_data(card, iob, NULL, NULL);
2246 if (rc)
2247 return rc;
2248
2249 channel->state = CH_STATE_UP;
2250 return 0;
2251}
2252
2253static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2254 unsigned long data)
2255{
2256 struct qeth_cmd_buffer *iob;
2257
2258 QETH_CARD_TEXT(card, 2, "cmenblcb");
2259
2260 iob = (struct qeth_cmd_buffer *) data;
2261 memcpy(&card->token.cm_filter_r,
2262 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2263 QETH_MPC_TOKEN_LENGTH);
2264 return 0;
2265}
2266
2267static int qeth_cm_enable(struct qeth_card *card)
2268{
2269 struct qeth_cmd_buffer *iob;
2270
2271 QETH_CARD_TEXT(card, 2, "cmenable");
2272
2273 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2274 if (!iob)
2275 return -ENOMEM;
2276
2277 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2278 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2279 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2280 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2281
2282 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2283}
2284
2285static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2286 unsigned long data)
2287{
2288 struct qeth_cmd_buffer *iob;
2289
2290 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2291
2292 iob = (struct qeth_cmd_buffer *) data;
2293 memcpy(&card->token.cm_connection_r,
2294 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2295 QETH_MPC_TOKEN_LENGTH);
2296 return 0;
2297}
2298
2299static int qeth_cm_setup(struct qeth_card *card)
2300{
2301 struct qeth_cmd_buffer *iob;
2302
2303 QETH_CARD_TEXT(card, 2, "cmsetup");
2304
2305 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2306 if (!iob)
2307 return -ENOMEM;
2308
2309 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2310 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2311 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2312 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2313 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2314 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2315 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2316}
2317
2318static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2319{
2320 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2321 link_type == QETH_LINK_TYPE_HSTR) {
2322 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2323 return false;
2324 }
2325
2326 return true;
2327}
2328
2329static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2330{
2331 struct net_device *dev = card->dev;
2332 unsigned int new_mtu;
2333
2334 if (!max_mtu) {
2335
2336 if (IS_IQD(card))
2337 return -EINVAL;
2338
2339 max_mtu = ETH_MAX_MTU;
2340 }
2341
2342 rtnl_lock();
2343 if (IS_IQD(card)) {
2344
2345 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2346
2347
2348 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2349 if (dev->max_mtu && dev->max_mtu != max_mtu)
2350 qeth_free_qdio_queues(card);
2351 } else {
2352 if (dev->mtu)
2353 new_mtu = dev->mtu;
2354
2355 else if (IS_LAYER2(card))
2356 new_mtu = ETH_DATA_LEN;
2357 else
2358 new_mtu = ETH_DATA_LEN - 8;
2359 }
2360
2361 dev->max_mtu = max_mtu;
2362 dev->mtu = min(new_mtu, max_mtu);
2363 rtnl_unlock();
2364 return 0;
2365}
2366
2367static int qeth_get_mtu_outof_framesize(int framesize)
2368{
2369 switch (framesize) {
2370 case 0x4000:
2371 return 8192;
2372 case 0x6000:
2373 return 16384;
2374 case 0xa000:
2375 return 32768;
2376 case 0xffff:
2377 return 57344;
2378 default:
2379 return 0;
2380 }
2381}
2382
2383static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2384 unsigned long data)
2385{
2386 __u16 mtu, framesize;
2387 __u16 len;
2388 struct qeth_cmd_buffer *iob;
2389 u8 link_type = 0;
2390
2391 QETH_CARD_TEXT(card, 2, "ulpenacb");
2392
2393 iob = (struct qeth_cmd_buffer *) data;
2394 memcpy(&card->token.ulp_filter_r,
2395 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2396 QETH_MPC_TOKEN_LENGTH);
2397 if (IS_IQD(card)) {
2398 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2399 mtu = qeth_get_mtu_outof_framesize(framesize);
2400 } else {
2401 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2402 }
2403 *(u16 *)reply->param = mtu;
2404
2405 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2406 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2407 memcpy(&link_type,
2408 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2409 if (!qeth_is_supported_link_type(card, link_type))
2410 return -EPROTONOSUPPORT;
2411 }
2412
2413 card->info.link_type = link_type;
2414 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2415 return 0;
2416}
2417
2418static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2419{
2420 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
2421}
2422
2423static int qeth_ulp_enable(struct qeth_card *card)
2424{
2425 u8 prot_type = qeth_mpc_select_prot_type(card);
2426 struct qeth_cmd_buffer *iob;
2427 u16 max_mtu;
2428 int rc;
2429
2430 QETH_CARD_TEXT(card, 2, "ulpenabl");
2431
2432 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2433 if (!iob)
2434 return -ENOMEM;
2435
2436 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2437 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2438 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2439 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2440 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2441 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2442 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2443 if (rc)
2444 return rc;
2445 return qeth_update_max_mtu(card, max_mtu);
2446}
2447
2448static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2449 unsigned long data)
2450{
2451 struct qeth_cmd_buffer *iob;
2452
2453 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2454
2455 iob = (struct qeth_cmd_buffer *) data;
2456 memcpy(&card->token.ulp_connection_r,
2457 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2458 QETH_MPC_TOKEN_LENGTH);
2459 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2460 3)) {
2461 QETH_CARD_TEXT(card, 2, "olmlimit");
2462 dev_err(&card->gdev->dev, "A connection could not be "
2463 "established because of an OLM limit\n");
2464 return -EMLINK;
2465 }
2466 return 0;
2467}
2468
2469static int qeth_ulp_setup(struct qeth_card *card)
2470{
2471 __u16 temp;
2472 struct qeth_cmd_buffer *iob;
2473
2474 QETH_CARD_TEXT(card, 2, "ulpsetup");
2475
2476 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2477 if (!iob)
2478 return -ENOMEM;
2479
2480 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2481 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2482 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2483 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2484 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2485 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2486
2487 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2488 temp = (card->info.cula << 8) + card->info.unit_addr2;
2489 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2490 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2491}
2492
2493static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2494 gfp_t gfp)
2495{
2496 struct qeth_qdio_out_buffer *newbuf;
2497
2498 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
2499 if (!newbuf)
2500 return -ENOMEM;
2501
2502 newbuf->buffer = q->qdio_bufs[bidx];
2503 skb_queue_head_init(&newbuf->skb_list);
2504 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2505 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2506 q->bufs[bidx] = newbuf;
2507 return 0;
2508}
2509
2510static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2511{
2512 if (!q)
2513 return;
2514
2515 qeth_drain_output_queue(q, true);
2516 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2517 kfree(q);
2518}
2519
2520static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2521{
2522 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2523 unsigned int i;
2524
2525 if (!q)
2526 return NULL;
2527
2528 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2529 goto err_qdio_bufs;
2530
2531 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
2532 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
2533 goto err_out_bufs;
2534 }
2535
2536 return q;
2537
2538err_out_bufs:
2539 while (i > 0)
2540 qeth_free_out_buf(q->bufs[--i]);
2541 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2542err_qdio_bufs:
2543 kfree(q);
2544 return NULL;
2545}
2546
2547static void qeth_tx_completion_timer(struct timer_list *timer)
2548{
2549 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2550
2551 napi_schedule(&queue->napi);
2552 QETH_TXQ_STAT_INC(queue, completion_timer);
2553}
2554
2555static int qeth_alloc_qdio_queues(struct qeth_card *card)
2556{
2557 unsigned int i;
2558
2559 QETH_CARD_TEXT(card, 2, "allcqdbf");
2560
2561 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2562 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2563 return 0;
2564
2565 QETH_CARD_TEXT(card, 2, "inq");
2566 card->qdio.in_q = qeth_alloc_qdio_queue();
2567 if (!card->qdio.in_q)
2568 goto out_nomem;
2569
2570
2571 if (qeth_alloc_buffer_pool(card))
2572 goto out_freeinq;
2573
2574
2575 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2576 struct qeth_qdio_out_q *queue;
2577
2578 queue = qeth_alloc_output_queue();
2579 if (!queue)
2580 goto out_freeoutq;
2581 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2582 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2583 card->qdio.out_qs[i] = queue;
2584 queue->card = card;
2585 queue->queue_no = i;
2586 INIT_LIST_HEAD(&queue->pending_bufs);
2587 spin_lock_init(&queue->lock);
2588 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2589 if (IS_IQD(card)) {
2590 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2591 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2592 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2593 } else {
2594 queue->coalesce_usecs = USEC_PER_SEC;
2595 queue->max_coalesced_frames = 0;
2596 queue->rescan_usecs = 10 * USEC_PER_SEC;
2597 }
2598 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2599 }
2600
2601
2602 if (qeth_alloc_cq(card))
2603 goto out_freeoutq;
2604
2605 return 0;
2606
2607out_freeoutq:
2608 while (i > 0) {
2609 qeth_free_output_queue(card->qdio.out_qs[--i]);
2610 card->qdio.out_qs[i] = NULL;
2611 }
2612 qeth_free_buffer_pool(card);
2613out_freeinq:
2614 qeth_free_qdio_queue(card->qdio.in_q);
2615 card->qdio.in_q = NULL;
2616out_nomem:
2617 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2618 return -ENOMEM;
2619}
2620
2621static void qeth_free_qdio_queues(struct qeth_card *card)
2622{
2623 int i, j;
2624
2625 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2626 QETH_QDIO_UNINITIALIZED)
2627 return;
2628
2629 qeth_free_cq(card);
2630 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2631 if (card->qdio.in_q->bufs[j].rx_skb)
2632 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2633 }
2634 qeth_free_qdio_queue(card->qdio.in_q);
2635 card->qdio.in_q = NULL;
2636
2637 qeth_free_buffer_pool(card);
2638
2639 for (i = 0; i < card->qdio.no_out_queues; i++) {
2640 qeth_free_output_queue(card->qdio.out_qs[i]);
2641 card->qdio.out_qs[i] = NULL;
2642 }
2643}
2644
2645static void qeth_fill_qib_parms(struct qeth_card *card,
2646 struct qeth_qib_parms *parms)
2647{
2648 struct qeth_qdio_out_q *queue;
2649 unsigned int i;
2650
2651 parms->pcit_magic[0] = 'P';
2652 parms->pcit_magic[1] = 'C';
2653 parms->pcit_magic[2] = 'I';
2654 parms->pcit_magic[3] = 'T';
2655 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2656 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2657 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2658 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2659
2660 parms->blkt_magic[0] = 'B';
2661 parms->blkt_magic[1] = 'L';
2662 parms->blkt_magic[2] = 'K';
2663 parms->blkt_magic[3] = 'T';
2664 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2665 parms->blkt_total = card->info.blkt.time_total;
2666 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2667 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2668
2669
2670 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2671 return;
2672
2673 parms->pque_magic[0] = 'P';
2674 parms->pque_magic[1] = 'Q';
2675 parms->pque_magic[2] = 'U';
2676 parms->pque_magic[3] = 'E';
2677 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2678 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2679 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2680
2681 qeth_for_each_output_queue(card, queue, i)
2682 parms->pque_priority[i] = queue->priority;
2683}
2684
2685static int qeth_qdio_activate(struct qeth_card *card)
2686{
2687 QETH_CARD_TEXT(card, 3, "qdioact");
2688 return qdio_activate(CARD_DDEV(card));
2689}
2690
2691static int qeth_dm_act(struct qeth_card *card)
2692{
2693 struct qeth_cmd_buffer *iob;
2694
2695 QETH_CARD_TEXT(card, 2, "dmact");
2696
2697 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2698 if (!iob)
2699 return -ENOMEM;
2700
2701 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2702 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2703 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2704 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2705 return qeth_send_control_data(card, iob, NULL, NULL);
2706}
2707
2708static int qeth_mpc_initialize(struct qeth_card *card)
2709{
2710 int rc;
2711
2712 QETH_CARD_TEXT(card, 2, "mpcinit");
2713
2714 rc = qeth_issue_next_read(card);
2715 if (rc) {
2716 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2717 return rc;
2718 }
2719 rc = qeth_cm_enable(card);
2720 if (rc) {
2721 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2722 return rc;
2723 }
2724 rc = qeth_cm_setup(card);
2725 if (rc) {
2726 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2727 return rc;
2728 }
2729 rc = qeth_ulp_enable(card);
2730 if (rc) {
2731 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2732 return rc;
2733 }
2734 rc = qeth_ulp_setup(card);
2735 if (rc) {
2736 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2737 return rc;
2738 }
2739 rc = qeth_alloc_qdio_queues(card);
2740 if (rc) {
2741 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2742 return rc;
2743 }
2744 rc = qeth_qdio_establish(card);
2745 if (rc) {
2746 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2747 qeth_free_qdio_queues(card);
2748 return rc;
2749 }
2750 rc = qeth_qdio_activate(card);
2751 if (rc) {
2752 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2753 return rc;
2754 }
2755 rc = qeth_dm_act(card);
2756 if (rc) {
2757 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2758 return rc;
2759 }
2760
2761 return 0;
2762}
2763
2764static void qeth_print_status_message(struct qeth_card *card)
2765{
2766 switch (card->info.type) {
2767 case QETH_CARD_TYPE_OSD:
2768 case QETH_CARD_TYPE_OSM:
2769 case QETH_CARD_TYPE_OSX:
2770
2771
2772
2773
2774 if (!card->info.mcl_level[0]) {
2775 sprintf(card->info.mcl_level, "%02x%02x",
2776 card->info.mcl_level[2],
2777 card->info.mcl_level[3]);
2778 break;
2779 }
2780 fallthrough;
2781 case QETH_CARD_TYPE_IQD:
2782 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2783 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2784 card->info.mcl_level[0]];
2785 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2786 card->info.mcl_level[1]];
2787 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2788 card->info.mcl_level[2]];
2789 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2790 card->info.mcl_level[3]];
2791 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2792 }
2793 break;
2794 default:
2795 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2796 }
2797 dev_info(&card->gdev->dev,
2798 "Device is a%s card%s%s%s\nwith link type %s.\n",
2799 qeth_get_cardname(card),
2800 (card->info.mcl_level[0]) ? " (level: " : "",
2801 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2802 (card->info.mcl_level[0]) ? ")" : "",
2803 qeth_get_cardname_short(card));
2804}
2805
2806static void qeth_initialize_working_pool_list(struct qeth_card *card)
2807{
2808 struct qeth_buffer_pool_entry *entry;
2809
2810 QETH_CARD_TEXT(card, 5, "inwrklst");
2811
2812 list_for_each_entry(entry,
2813 &card->qdio.init_pool.entry_list, init_list) {
2814 qeth_put_buffer_pool_entry(card, entry);
2815 }
2816}
2817
2818static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2819 struct qeth_card *card)
2820{
2821 struct qeth_buffer_pool_entry *entry;
2822 int i, free;
2823
2824 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2825 return NULL;
2826
2827 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2828 free = 1;
2829 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2830 if (page_count(entry->elements[i]) > 1) {
2831 free = 0;
2832 break;
2833 }
2834 }
2835 if (free) {
2836 list_del_init(&entry->list);
2837 return entry;
2838 }
2839 }
2840
2841
2842 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2843 struct qeth_buffer_pool_entry, list);
2844 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2845 if (page_count(entry->elements[i]) > 1) {
2846 struct page *page = dev_alloc_page();
2847
2848 if (!page)
2849 return NULL;
2850
2851 __free_page(entry->elements[i]);
2852 entry->elements[i] = page;
2853 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2854 }
2855 }
2856 list_del_init(&entry->list);
2857 return entry;
2858}
2859
2860static int qeth_init_input_buffer(struct qeth_card *card,
2861 struct qeth_qdio_buffer *buf)
2862{
2863 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2864 int i;
2865
2866 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2867 buf->rx_skb = netdev_alloc_skb(card->dev,
2868 ETH_HLEN +
2869 sizeof(struct ipv6hdr));
2870 if (!buf->rx_skb)
2871 return -ENOMEM;
2872 }
2873
2874 if (!pool_entry) {
2875 pool_entry = qeth_find_free_buffer_pool_entry(card);
2876 if (!pool_entry)
2877 return -ENOBUFS;
2878
2879 buf->pool_entry = pool_entry;
2880 }
2881
2882
2883
2884
2885
2886
2887
2888 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2889 buf->buffer->element[i].length = PAGE_SIZE;
2890 buf->buffer->element[i].addr =
2891 page_to_phys(pool_entry->elements[i]);
2892 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2893 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2894 else
2895 buf->buffer->element[i].eflags = 0;
2896 buf->buffer->element[i].sflags = 0;
2897 }
2898 return 0;
2899}
2900
2901static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2902 struct qeth_qdio_out_q *queue)
2903{
2904 if (!IS_IQD(card) ||
2905 qeth_iqd_is_mcast_queue(card, queue) ||
2906 card->options.cq == QETH_CQ_ENABLED ||
2907 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2908 return 1;
2909
2910 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2911}
2912
2913static int qeth_init_qdio_queues(struct qeth_card *card)
2914{
2915 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
2916 unsigned int i;
2917 int rc;
2918
2919 QETH_CARD_TEXT(card, 2, "initqdqs");
2920
2921
2922 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2923 memset(&card->rx, 0, sizeof(struct qeth_rx));
2924
2925 qeth_initialize_working_pool_list(card);
2926
2927 for (i = 0; i < rx_bufs; i++) {
2928 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2929 if (rc)
2930 return rc;
2931 }
2932
2933 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
2934 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, rx_bufs,
2935 NULL);
2936 if (rc) {
2937 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2938 return rc;
2939 }
2940
2941
2942 rc = qeth_cq_init(card);
2943 if (rc) {
2944 return rc;
2945 }
2946
2947
2948 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2949 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2950
2951 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2952 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2953 queue->next_buf_to_fill = 0;
2954 queue->do_pack = 0;
2955 queue->prev_hdr = NULL;
2956 queue->coalesced_frames = 0;
2957 queue->bulk_start = 0;
2958 queue->bulk_count = 0;
2959 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
2960 atomic_set(&queue->used_buffers, 0);
2961 atomic_set(&queue->set_pci_flags_count, 0);
2962 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2963 }
2964 return 0;
2965}
2966
2967static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2968 struct qeth_cmd_buffer *iob)
2969{
2970 qeth_mpc_finalize_cmd(card, iob);
2971
2972
2973 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
2974}
2975
2976static void qeth_prepare_ipa_cmd(struct qeth_card *card,
2977 struct qeth_cmd_buffer *iob, u16 cmd_length)
2978{
2979 u8 prot_type = qeth_mpc_select_prot_type(card);
2980 u16 total_length = iob->length;
2981
2982 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2983 iob->data);
2984 iob->finalize = qeth_ipa_finalize_cmd;
2985
2986 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2987 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2988 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2989 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2990 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2991 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2992 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2993 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2994}
2995
2996static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
2997 struct qeth_cmd_buffer *reply)
2998{
2999 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
3000
3001 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
3002}
3003
3004struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
3005 enum qeth_ipa_cmds cmd_code,
3006 enum qeth_prot_versions prot,
3007 unsigned int data_length)
3008{
3009 struct qeth_cmd_buffer *iob;
3010 struct qeth_ipacmd_hdr *hdr;
3011
3012 data_length += offsetof(struct qeth_ipa_cmd, data);
3013 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
3014 QETH_IPA_TIMEOUT);
3015 if (!iob)
3016 return NULL;
3017
3018 qeth_prepare_ipa_cmd(card, iob, data_length);
3019 iob->match = qeth_ipa_match_reply;
3020
3021 hdr = &__ipa_cmd(iob)->hdr;
3022 hdr->command = cmd_code;
3023 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3024
3025 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3026 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3027 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3028 hdr->param_count = 1;
3029 hdr->prot_version = prot;
3030 return iob;
3031}
3032EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3033
3034static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3035 struct qeth_reply *reply, unsigned long data)
3036{
3037 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3038
3039 return (cmd->hdr.return_code) ? -EIO : 0;
3040}
3041
3042
3043
3044
3045
3046
3047
3048int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3049 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3050 unsigned long),
3051 void *reply_param)
3052{
3053 int rc;
3054
3055 QETH_CARD_TEXT(card, 4, "sendipa");
3056
3057 if (card->read_or_write_problem) {
3058 qeth_put_cmd(iob);
3059 return -EIO;
3060 }
3061
3062 if (reply_cb == NULL)
3063 reply_cb = qeth_send_ipa_cmd_cb;
3064 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3065 if (rc == -ETIME) {
3066 qeth_clear_ipacmd_list(card);
3067 qeth_schedule_recovery(card);
3068 }
3069 return rc;
3070}
3071EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3072
3073static int qeth_send_startlan_cb(struct qeth_card *card,
3074 struct qeth_reply *reply, unsigned long data)
3075{
3076 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3077
3078 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3079 return -ENETDOWN;
3080
3081 return (cmd->hdr.return_code) ? -EIO : 0;
3082}
3083
3084static int qeth_send_startlan(struct qeth_card *card)
3085{
3086 struct qeth_cmd_buffer *iob;
3087
3088 QETH_CARD_TEXT(card, 2, "strtlan");
3089
3090 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3091 if (!iob)
3092 return -ENOMEM;
3093 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3094}
3095
3096static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3097{
3098 if (!cmd->hdr.return_code)
3099 cmd->hdr.return_code =
3100 cmd->data.setadapterparms.hdr.return_code;
3101 return cmd->hdr.return_code;
3102}
3103
3104static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3105 struct qeth_reply *reply, unsigned long data)
3106{
3107 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3108 struct qeth_query_cmds_supp *query_cmd;
3109
3110 QETH_CARD_TEXT(card, 3, "quyadpcb");
3111 if (qeth_setadpparms_inspect_rc(cmd))
3112 return -EIO;
3113
3114 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3115 if (query_cmd->lan_type & 0x7f) {
3116 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3117 return -EPROTONOSUPPORT;
3118
3119 card->info.link_type = query_cmd->lan_type;
3120 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3121 }
3122
3123 card->options.adp.supported = query_cmd->supported_cmds;
3124 return 0;
3125}
3126
3127static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3128 enum qeth_ipa_setadp_cmd adp_cmd,
3129 unsigned int data_length)
3130{
3131 struct qeth_ipacmd_setadpparms_hdr *hdr;
3132 struct qeth_cmd_buffer *iob;
3133
3134 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3135 data_length +
3136 offsetof(struct qeth_ipacmd_setadpparms,
3137 data));
3138 if (!iob)
3139 return NULL;
3140
3141 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3142 hdr->cmdlength = sizeof(*hdr) + data_length;
3143 hdr->command_code = adp_cmd;
3144 hdr->used_total = 1;
3145 hdr->seq_no = 1;
3146 return iob;
3147}
3148
3149static int qeth_query_setadapterparms(struct qeth_card *card)
3150{
3151 int rc;
3152 struct qeth_cmd_buffer *iob;
3153
3154 QETH_CARD_TEXT(card, 3, "queryadp");
3155 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3156 SETADP_DATA_SIZEOF(query_cmds_supp));
3157 if (!iob)
3158 return -ENOMEM;
3159 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3160 return rc;
3161}
3162
3163static int qeth_query_ipassists_cb(struct qeth_card *card,
3164 struct qeth_reply *reply, unsigned long data)
3165{
3166 struct qeth_ipa_cmd *cmd;
3167
3168 QETH_CARD_TEXT(card, 2, "qipasscb");
3169
3170 cmd = (struct qeth_ipa_cmd *) data;
3171
3172 switch (cmd->hdr.return_code) {
3173 case IPA_RC_SUCCESS:
3174 break;
3175 case IPA_RC_NOTSUPP:
3176 case IPA_RC_L2_UNSUPPORTED_CMD:
3177 QETH_CARD_TEXT(card, 2, "ipaunsup");
3178 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3179 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3180 return -EOPNOTSUPP;
3181 default:
3182 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3183 CARD_DEVID(card), cmd->hdr.return_code);
3184 return -EIO;
3185 }
3186
3187 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3188 card->options.ipa4 = cmd->hdr.assists;
3189 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3190 card->options.ipa6 = cmd->hdr.assists;
3191 else
3192 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3193 CARD_DEVID(card));
3194 return 0;
3195}
3196
3197static int qeth_query_ipassists(struct qeth_card *card,
3198 enum qeth_prot_versions prot)
3199{
3200 int rc;
3201 struct qeth_cmd_buffer *iob;
3202
3203 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3204 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3205 if (!iob)
3206 return -ENOMEM;
3207 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3208 return rc;
3209}
3210
3211static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3212 struct qeth_reply *reply, unsigned long data)
3213{
3214 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3215 struct qeth_query_switch_attributes *attrs;
3216 struct qeth_switch_info *sw_info;
3217
3218 QETH_CARD_TEXT(card, 2, "qswiatcb");
3219 if (qeth_setadpparms_inspect_rc(cmd))
3220 return -EIO;
3221
3222 sw_info = (struct qeth_switch_info *)reply->param;
3223 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3224 sw_info->capabilities = attrs->capabilities;
3225 sw_info->settings = attrs->settings;
3226 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3227 sw_info->settings);
3228 return 0;
3229}
3230
3231int qeth_query_switch_attributes(struct qeth_card *card,
3232 struct qeth_switch_info *sw_info)
3233{
3234 struct qeth_cmd_buffer *iob;
3235
3236 QETH_CARD_TEXT(card, 2, "qswiattr");
3237 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3238 return -EOPNOTSUPP;
3239 if (!netif_carrier_ok(card->dev))
3240 return -ENOMEDIUM;
3241 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3242 if (!iob)
3243 return -ENOMEM;
3244 return qeth_send_ipa_cmd(card, iob,
3245 qeth_query_switch_attributes_cb, sw_info);
3246}
3247
3248struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3249 enum qeth_diags_cmds sub_cmd,
3250 unsigned int data_length)
3251{
3252 struct qeth_ipacmd_diagass *cmd;
3253 struct qeth_cmd_buffer *iob;
3254
3255 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3256 DIAG_HDR_LEN + data_length);
3257 if (!iob)
3258 return NULL;
3259
3260 cmd = &__ipa_cmd(iob)->data.diagass;
3261 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3262 cmd->subcmd = sub_cmd;
3263 return iob;
3264}
3265EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3266
3267static int qeth_query_setdiagass_cb(struct qeth_card *card,
3268 struct qeth_reply *reply, unsigned long data)
3269{
3270 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3271 u16 rc = cmd->hdr.return_code;
3272
3273 if (rc) {
3274 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3275 return -EIO;
3276 }
3277
3278 card->info.diagass_support = cmd->data.diagass.ext;
3279 return 0;
3280}
3281
3282static int qeth_query_setdiagass(struct qeth_card *card)
3283{
3284 struct qeth_cmd_buffer *iob;
3285
3286 QETH_CARD_TEXT(card, 2, "qdiagass");
3287 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3288 if (!iob)
3289 return -ENOMEM;
3290 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3291}
3292
3293static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3294{
3295 unsigned long info = get_zeroed_page(GFP_KERNEL);
3296 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3297 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3298 struct ccw_dev_id ccwid;
3299 int level;
3300
3301 tid->chpid = card->info.chpid;
3302 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3303 tid->ssid = ccwid.ssid;
3304 tid->devno = ccwid.devno;
3305 if (!info)
3306 return;
3307 level = stsi(NULL, 0, 0, 0);
3308 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3309 tid->lparnr = info222->lpar_number;
3310 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3311 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3312 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3313 }
3314 free_page(info);
3315}
3316
3317static int qeth_hw_trap_cb(struct qeth_card *card,
3318 struct qeth_reply *reply, unsigned long data)
3319{
3320 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3321 u16 rc = cmd->hdr.return_code;
3322
3323 if (rc) {
3324 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3325 return -EIO;
3326 }
3327 return 0;
3328}
3329
3330int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3331{
3332 struct qeth_cmd_buffer *iob;
3333 struct qeth_ipa_cmd *cmd;
3334
3335 QETH_CARD_TEXT(card, 2, "diagtrap");
3336 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3337 if (!iob)
3338 return -ENOMEM;
3339 cmd = __ipa_cmd(iob);
3340 cmd->data.diagass.type = 1;
3341 cmd->data.diagass.action = action;
3342 switch (action) {
3343 case QETH_DIAGS_TRAP_ARM:
3344 cmd->data.diagass.options = 0x0003;
3345 cmd->data.diagass.ext = 0x00010000 +
3346 sizeof(struct qeth_trap_id);
3347 qeth_get_trap_id(card,
3348 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3349 break;
3350 case QETH_DIAGS_TRAP_DISARM:
3351 cmd->data.diagass.options = 0x0001;
3352 break;
3353 case QETH_DIAGS_TRAP_CAPTURE:
3354 break;
3355 }
3356 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3357}
3358
3359static int qeth_check_qdio_errors(struct qeth_card *card,
3360 struct qdio_buffer *buf,
3361 unsigned int qdio_error,
3362 const char *dbftext)
3363{
3364 if (qdio_error) {
3365 QETH_CARD_TEXT(card, 2, dbftext);
3366 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3367 buf->element[15].sflags);
3368 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3369 buf->element[14].sflags);
3370 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3371 if ((buf->element[15].sflags) == 0x12) {
3372 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3373 return 0;
3374 } else
3375 return 1;
3376 }
3377 return 0;
3378}
3379
3380static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3381 unsigned int count)
3382{
3383 struct qeth_qdio_q *queue = card->qdio.in_q;
3384 struct list_head *lh;
3385 int i;
3386 int rc;
3387 int newcount = 0;
3388
3389
3390 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3391 for (i = queue->next_buf_to_init;
3392 i < queue->next_buf_to_init + count; ++i) {
3393 if (qeth_init_input_buffer(card,
3394 &queue->bufs[QDIO_BUFNR(i)])) {
3395 break;
3396 } else {
3397 newcount++;
3398 }
3399 }
3400
3401 if (newcount < count) {
3402
3403
3404 atomic_set(&card->force_alloc_skb, 3);
3405 count = newcount;
3406 } else {
3407 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3408 }
3409
3410 if (!count) {
3411 i = 0;
3412 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3413 i++;
3414 if (i == card->qdio.in_buf_pool.buf_count) {
3415 QETH_CARD_TEXT(card, 2, "qsarbw");
3416 schedule_delayed_work(
3417 &card->buffer_reclaim_work,
3418 QETH_RECLAIM_WORK_TIME);
3419 }
3420 return 0;
3421 }
3422
3423 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3424 queue->next_buf_to_init, count, NULL);
3425 if (rc) {
3426 QETH_CARD_TEXT(card, 2, "qinberr");
3427 }
3428 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3429 count);
3430 return count;
3431 }
3432
3433 return 0;
3434}
3435
3436static void qeth_buffer_reclaim_work(struct work_struct *work)
3437{
3438 struct qeth_card *card = container_of(to_delayed_work(work),
3439 struct qeth_card,
3440 buffer_reclaim_work);
3441
3442 local_bh_disable();
3443 napi_schedule(&card->napi);
3444
3445 local_bh_enable();
3446}
3447
3448static void qeth_handle_send_error(struct qeth_card *card,
3449 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3450{
3451 int sbalf15 = buffer->buffer->element[15].sflags;
3452
3453 QETH_CARD_TEXT(card, 6, "hdsnderr");
3454 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3455
3456 if (!qdio_err)
3457 return;
3458
3459 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3460 return;
3461
3462 QETH_CARD_TEXT(card, 1, "lnkfail");
3463 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3464 (u16)qdio_err, (u8)sbalf15);
3465}
3466
3467
3468
3469
3470
3471
3472
3473static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3474{
3475 struct qeth_qdio_out_buffer *buffer;
3476
3477 buffer = queue->bufs[queue->next_buf_to_fill];
3478 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3479 (buffer->next_element_to_fill > 0)) {
3480
3481 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3482 queue->next_buf_to_fill =
3483 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3484 return 1;
3485 }
3486 return 0;
3487}
3488
3489
3490
3491
3492
3493static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3494{
3495 if (!queue->do_pack) {
3496 if (atomic_read(&queue->used_buffers)
3497 >= QETH_HIGH_WATERMARK_PACK){
3498
3499 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3500 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3501 queue->do_pack = 1;
3502 }
3503 }
3504}
3505
3506
3507
3508
3509
3510
3511
3512static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3513{
3514 if (queue->do_pack) {
3515 if (atomic_read(&queue->used_buffers)
3516 <= QETH_LOW_WATERMARK_PACK) {
3517
3518 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3519 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3520 queue->do_pack = 0;
3521 return qeth_prep_flush_pack_buffer(queue);
3522 }
3523 }
3524 return 0;
3525}
3526
3527static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3528 int count)
3529{
3530 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3531 struct qeth_card *card = queue->card;
3532 unsigned int frames, usecs;
3533 struct qaob *aob = NULL;
3534 int rc;
3535 int i;
3536
3537 for (i = index; i < index + count; ++i) {
3538 unsigned int bidx = QDIO_BUFNR(i);
3539 struct sk_buff *skb;
3540
3541 buf = queue->bufs[bidx];
3542 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3543 SBAL_EFLAGS_LAST_ENTRY;
3544 queue->coalesced_frames += buf->frames;
3545
3546 if (IS_IQD(card)) {
3547 skb_queue_walk(&buf->skb_list, skb)
3548 skb_tx_timestamp(skb);
3549 }
3550 }
3551
3552 if (IS_IQD(card)) {
3553 if (card->options.cq == QETH_CQ_ENABLED &&
3554 !qeth_iqd_is_mcast_queue(card, queue) &&
3555 count == 1) {
3556 if (!buf->aob)
3557 buf->aob = qdio_allocate_aob();
3558 if (buf->aob) {
3559 struct qeth_qaob_priv1 *priv;
3560
3561 aob = buf->aob;
3562 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3563 priv->state = QETH_QAOB_ISSUED;
3564 priv->queue_no = queue->queue_no;
3565 }
3566 }
3567 } else {
3568 if (!queue->do_pack) {
3569 if ((atomic_read(&queue->used_buffers) >=
3570 (QETH_HIGH_WATERMARK_PACK -
3571 QETH_WATERMARK_PACK_FUZZ)) &&
3572 !atomic_read(&queue->set_pci_flags_count)) {
3573
3574
3575 atomic_inc(&queue->set_pci_flags_count);
3576 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3577 }
3578 } else {
3579 if (!atomic_read(&queue->set_pci_flags_count)) {
3580
3581
3582
3583
3584
3585
3586
3587
3588 atomic_inc(&queue->set_pci_flags_count);
3589 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3590 }
3591 }
3592 }
3593
3594 QETH_TXQ_STAT_INC(queue, doorbell);
3595 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_OUTPUT, queue->queue_no,
3596 index, count, aob);
3597
3598 switch (rc) {
3599 case 0:
3600 case -ENOBUFS:
3601
3602
3603
3604 frames = READ_ONCE(queue->max_coalesced_frames);
3605 usecs = READ_ONCE(queue->coalesce_usecs);
3606
3607 if (frames && queue->coalesced_frames >= frames) {
3608 napi_schedule(&queue->napi);
3609 queue->coalesced_frames = 0;
3610 QETH_TXQ_STAT_INC(queue, coal_frames);
3611 } else if (qeth_use_tx_irqs(card) &&
3612 atomic_read(&queue->used_buffers) >= 32) {
3613
3614 napi_schedule(&queue->napi);
3615 QETH_TXQ_STAT_INC(queue, coal_frames);
3616 } else if (usecs) {
3617 qeth_tx_arm_timer(queue, usecs);
3618 }
3619
3620 break;
3621 default:
3622 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3623 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3624 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3625 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3626 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3627
3628
3629
3630 qeth_schedule_recovery(queue->card);
3631 }
3632}
3633
3634static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3635{
3636 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3637
3638 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3639 queue->prev_hdr = NULL;
3640 queue->bulk_count = 0;
3641}
3642
3643static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3644{
3645
3646
3647
3648
3649 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3650 !atomic_read(&queue->set_pci_flags_count)) {
3651 unsigned int index, flush_cnt;
3652 bool q_was_packing;
3653
3654 spin_lock(&queue->lock);
3655
3656 index = queue->next_buf_to_fill;
3657 q_was_packing = queue->do_pack;
3658
3659 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3660 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3661 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3662
3663 if (flush_cnt) {
3664 qeth_flush_buffers(queue, index, flush_cnt);
3665 if (q_was_packing)
3666 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3667 }
3668
3669 spin_unlock(&queue->lock);
3670 }
3671}
3672
3673static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3674{
3675 struct qeth_card *card = (struct qeth_card *)card_ptr;
3676
3677 napi_schedule_irqoff(&card->napi);
3678}
3679
3680int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3681{
3682 int rc;
3683
3684 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3685 rc = -1;
3686 goto out;
3687 } else {
3688 if (card->options.cq == cq) {
3689 rc = 0;
3690 goto out;
3691 }
3692
3693 qeth_free_qdio_queues(card);
3694 card->options.cq = cq;
3695 rc = 0;
3696 }
3697out:
3698 return rc;
3699
3700}
3701EXPORT_SYMBOL_GPL(qeth_configure_cq);
3702
3703static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3704{
3705 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3706 unsigned int queue_no = priv->queue_no;
3707
3708 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3709
3710 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3711 queue_no < card->qdio.no_out_queues)
3712 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3713}
3714
3715static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3716 unsigned int queue, int first_element,
3717 int count)
3718{
3719 struct qeth_qdio_q *cq = card->qdio.c_q;
3720 int i;
3721 int rc;
3722
3723 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3724 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3725 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3726
3727 if (qdio_err) {
3728 netif_tx_stop_all_queues(card->dev);
3729 qeth_schedule_recovery(card);
3730 return;
3731 }
3732
3733 for (i = first_element; i < first_element + count; ++i) {
3734 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3735 int e = 0;
3736
3737 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3738 buffer->element[e].addr) {
3739 unsigned long phys_aob_addr = buffer->element[e].addr;
3740
3741 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
3742 ++e;
3743 }
3744 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3745 }
3746 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3747 cq->next_buf_to_init, count, NULL);
3748 if (rc) {
3749 dev_warn(&card->gdev->dev,
3750 "QDIO reported an error, rc=%i\n", rc);
3751 QETH_CARD_TEXT(card, 2, "qcqherr");
3752 }
3753
3754 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3755}
3756
3757static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3758 unsigned int qdio_err, int queue,
3759 int first_elem, int count,
3760 unsigned long card_ptr)
3761{
3762 struct qeth_card *card = (struct qeth_card *)card_ptr;
3763
3764 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3765 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3766
3767 if (qdio_err)
3768 qeth_schedule_recovery(card);
3769}
3770
3771static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3772 unsigned int qdio_error, int __queue,
3773 int first_element, int count,
3774 unsigned long card_ptr)
3775{
3776 struct qeth_card *card = (struct qeth_card *) card_ptr;
3777
3778 QETH_CARD_TEXT(card, 2, "achkcond");
3779 netif_tx_stop_all_queues(card->dev);
3780 qeth_schedule_recovery(card);
3781}
3782
3783
3784
3785
3786int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3787{
3788 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3789 u8 tos;
3790
3791 switch (card->qdio.do_prio_queueing) {
3792 case QETH_PRIO_Q_ING_TOS:
3793 case QETH_PRIO_Q_ING_PREC:
3794 switch (vlan_get_protocol(skb)) {
3795 case htons(ETH_P_IP):
3796 tos = ipv4_get_dsfield(ip_hdr(skb));
3797 break;
3798 case htons(ETH_P_IPV6):
3799 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3800 break;
3801 default:
3802 return card->qdio.default_out_queue;
3803 }
3804 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3805 return ~tos >> 6 & 3;
3806 if (tos & IPTOS_MINCOST)
3807 return 3;
3808 if (tos & IPTOS_RELIABILITY)
3809 return 2;
3810 if (tos & IPTOS_THROUGHPUT)
3811 return 1;
3812 if (tos & IPTOS_LOWDELAY)
3813 return 0;
3814 break;
3815 case QETH_PRIO_Q_ING_SKB:
3816 if (skb->priority > 5)
3817 return 0;
3818 return ~skb->priority >> 1 & 3;
3819 case QETH_PRIO_Q_ING_VLAN:
3820 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3821 return ~ntohs(veth->h_vlan_TCI) >>
3822 (VLAN_PRIO_SHIFT + 1) & 3;
3823 break;
3824 case QETH_PRIO_Q_ING_FIXED:
3825 return card->qdio.default_out_queue;
3826 default:
3827 break;
3828 }
3829 return card->qdio.default_out_queue;
3830}
3831EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3832
3833
3834
3835
3836
3837
3838
3839
3840static int qeth_get_elements_for_frags(struct sk_buff *skb)
3841{
3842 int cnt, elements = 0;
3843
3844 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3845 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3846
3847 elements += qeth_get_elements_for_range(
3848 (addr_t)skb_frag_address(frag),
3849 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3850 }
3851 return elements;
3852}
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863static unsigned int qeth_count_elements(struct sk_buff *skb,
3864 unsigned int data_offset)
3865{
3866 unsigned int elements = qeth_get_elements_for_frags(skb);
3867 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3868 addr_t start = (addr_t)skb->data + data_offset;
3869
3870 if (start != end)
3871 elements += qeth_get_elements_for_range(start, end);
3872 return elements;
3873}
3874
3875#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3876 MAX_TCP_HEADER)
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3894 struct sk_buff *skb, struct qeth_hdr **hdr,
3895 unsigned int hdr_len, unsigned int proto_len,
3896 unsigned int *elements)
3897{
3898 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
3899 const unsigned int contiguous = proto_len ? proto_len : 1;
3900 const unsigned int max_elements = queue->max_elements;
3901 unsigned int __elements;
3902 addr_t start, end;
3903 bool push_ok;
3904 int rc;
3905
3906check_layout:
3907 start = (addr_t)skb->data - hdr_len;
3908 end = (addr_t)skb->data;
3909
3910 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3911
3912 push_ok = true;
3913
3914 if (skb_is_gso(skb))
3915 __elements = 1 + qeth_count_elements(skb, proto_len);
3916 else
3917 __elements = qeth_count_elements(skb, 0);
3918 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3919
3920 push_ok = true;
3921 __elements = 1 + qeth_count_elements(skb, 0);
3922 } else {
3923
3924 push_ok = false;
3925 __elements = 1 + qeth_count_elements(skb, proto_len);
3926 }
3927
3928
3929 if (__elements > max_elements) {
3930 if (!skb_is_nonlinear(skb)) {
3931
3932 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3933 max_elements, __elements, skb->len);
3934 return -E2BIG;
3935 }
3936
3937 rc = skb_linearize(skb);
3938 if (rc) {
3939 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3940 return rc;
3941 }
3942
3943 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3944
3945 goto check_layout;
3946 }
3947
3948 *elements = __elements;
3949
3950 if (push_ok) {
3951 *hdr = skb_push(skb, hdr_len);
3952 return hdr_len;
3953 }
3954
3955
3956 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3957 return -E2BIG;
3958 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
3959 if (!*hdr)
3960 return -ENOMEM;
3961
3962 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3963 return 0;
3964}
3965
3966static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
3967 struct sk_buff *curr_skb,
3968 struct qeth_hdr *curr_hdr)
3969{
3970 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
3971 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3972
3973 if (!prev_hdr)
3974 return true;
3975
3976
3977 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3978 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3979
3980 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3981 eth_hdr(curr_skb)->h_dest) &&
3982 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3983 }
3984
3985 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3986 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3987}
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3999 struct sk_buff *skb, struct qeth_hdr *hdr,
4000 unsigned int offset, unsigned int hd_len)
4001{
4002 struct qdio_buffer *buffer = buf->buffer;
4003 int element = buf->next_element_to_fill;
4004 int length = skb_headlen(skb) - offset;
4005 char *data = skb->data + offset;
4006 unsigned int elem_length, cnt;
4007 bool is_first_elem = true;
4008
4009 __skb_queue_tail(&buf->skb_list, skb);
4010
4011
4012 if (hd_len) {
4013 is_first_elem = false;
4014
4015 buffer->element[element].addr = virt_to_phys(hdr);
4016 buffer->element[element].length = hd_len;
4017 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4018
4019
4020 if ((void *)hdr != skb->data)
4021 __set_bit(element, buf->from_kmem_cache);
4022
4023 else if (length > 0 && !PAGE_ALIGNED(data) &&
4024 (data == (char *)hdr + hd_len))
4025 buffer->element[element].eflags |=
4026 SBAL_EFLAGS_CONTIGUOUS;
4027
4028 element++;
4029 }
4030
4031
4032 while (length > 0) {
4033 elem_length = min_t(unsigned int, length,
4034 PAGE_SIZE - offset_in_page(data));
4035
4036 buffer->element[element].addr = virt_to_phys(data);
4037 buffer->element[element].length = elem_length;
4038 length -= elem_length;
4039 if (is_first_elem) {
4040 is_first_elem = false;
4041 if (length || skb_is_nonlinear(skb))
4042
4043 buffer->element[element].eflags =
4044 SBAL_EFLAGS_FIRST_FRAG;
4045 else
4046 buffer->element[element].eflags = 0;
4047 } else {
4048 buffer->element[element].eflags =
4049 SBAL_EFLAGS_MIDDLE_FRAG;
4050 }
4051
4052 data += elem_length;
4053 element++;
4054 }
4055
4056
4057 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4058 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4059
4060 data = skb_frag_address(frag);
4061 length = skb_frag_size(frag);
4062 while (length > 0) {
4063 elem_length = min_t(unsigned int, length,
4064 PAGE_SIZE - offset_in_page(data));
4065
4066 buffer->element[element].addr = virt_to_phys(data);
4067 buffer->element[element].length = elem_length;
4068 buffer->element[element].eflags =
4069 SBAL_EFLAGS_MIDDLE_FRAG;
4070
4071 length -= elem_length;
4072 data += elem_length;
4073 element++;
4074 }
4075 }
4076
4077 if (buffer->element[element - 1].eflags)
4078 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4079 buf->next_element_to_fill = element;
4080 return element;
4081}
4082
4083static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4084 struct sk_buff *skb, unsigned int elements,
4085 struct qeth_hdr *hdr, unsigned int offset,
4086 unsigned int hd_len)
4087{
4088 unsigned int bytes = qdisc_pkt_len(skb);
4089 struct qeth_qdio_out_buffer *buffer;
4090 unsigned int next_element;
4091 struct netdev_queue *txq;
4092 bool stopped = false;
4093 bool flush;
4094
4095 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4096 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4097
4098
4099
4100
4101 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4102 return -EBUSY;
4103
4104 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4105
4106 if (flush ||
4107 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4108 if (buffer->next_element_to_fill > 0) {
4109 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4110 queue->bulk_count++;
4111 }
4112
4113 if (queue->bulk_count >= queue->bulk_max)
4114 flush = true;
4115
4116 if (flush)
4117 qeth_flush_queue(queue);
4118
4119 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4120 queue->bulk_count)];
4121
4122
4123 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4124 return -EBUSY;
4125 }
4126
4127 if (buffer->next_element_to_fill == 0 &&
4128 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4129
4130
4131
4132 QETH_TXQ_STAT_INC(queue, stopped);
4133 netif_tx_stop_queue(txq);
4134 stopped = true;
4135 }
4136
4137 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4138 buffer->bytes += bytes;
4139 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4140 queue->prev_hdr = hdr;
4141
4142 flush = __netdev_tx_sent_queue(txq, bytes,
4143 !stopped && netdev_xmit_more());
4144
4145 if (flush || next_element >= queue->max_elements) {
4146 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4147 queue->bulk_count++;
4148
4149 if (queue->bulk_count >= queue->bulk_max)
4150 flush = true;
4151
4152 if (flush)
4153 qeth_flush_queue(queue);
4154 }
4155
4156 if (stopped && !qeth_out_queue_is_full(queue))
4157 netif_tx_start_queue(txq);
4158 return 0;
4159}
4160
4161static int qeth_do_send_packet(struct qeth_card *card,
4162 struct qeth_qdio_out_q *queue,
4163 struct sk_buff *skb, struct qeth_hdr *hdr,
4164 unsigned int offset, unsigned int hd_len,
4165 unsigned int elements_needed)
4166{
4167 unsigned int start_index = queue->next_buf_to_fill;
4168 struct qeth_qdio_out_buffer *buffer;
4169 unsigned int next_element;
4170 struct netdev_queue *txq;
4171 bool stopped = false;
4172 int flush_count = 0;
4173 int do_pack = 0;
4174 int rc = 0;
4175
4176 buffer = queue->bufs[queue->next_buf_to_fill];
4177
4178
4179
4180
4181 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4182 return -EBUSY;
4183
4184 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4185
4186
4187 qeth_switch_to_packing_if_needed(queue);
4188 if (queue->do_pack) {
4189 do_pack = 1;
4190
4191 if (buffer->next_element_to_fill + elements_needed >
4192 queue->max_elements) {
4193
4194 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4195 flush_count++;
4196 queue->next_buf_to_fill =
4197 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4198 buffer = queue->bufs[queue->next_buf_to_fill];
4199
4200
4201 if (atomic_read(&buffer->state) !=
4202 QETH_QDIO_BUF_EMPTY) {
4203 qeth_flush_buffers(queue, start_index,
4204 flush_count);
4205 rc = -EBUSY;
4206 goto out;
4207 }
4208 }
4209 }
4210
4211 if (buffer->next_element_to_fill == 0 &&
4212 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4213
4214
4215
4216 QETH_TXQ_STAT_INC(queue, stopped);
4217 netif_tx_stop_queue(txq);
4218 stopped = true;
4219 }
4220
4221 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4222 buffer->bytes += qdisc_pkt_len(skb);
4223 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4224
4225 if (queue->do_pack)
4226 QETH_TXQ_STAT_INC(queue, skbs_pack);
4227 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4228 flush_count++;
4229 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4230 queue->next_buf_to_fill =
4231 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4232 }
4233
4234 if (flush_count)
4235 qeth_flush_buffers(queue, start_index, flush_count);
4236
4237out:
4238 if (do_pack)
4239 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4240
4241 if (stopped && !qeth_out_queue_is_full(queue))
4242 netif_tx_start_queue(txq);
4243 return rc;
4244}
4245
4246static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4247 unsigned int payload_len, struct sk_buff *skb,
4248 unsigned int proto_len)
4249{
4250 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4251
4252 ext->hdr_tot_len = sizeof(*ext);
4253 ext->imb_hdr_no = 1;
4254 ext->hdr_type = 1;
4255 ext->hdr_version = 1;
4256 ext->hdr_len = 28;
4257 ext->payload_len = payload_len;
4258 ext->mss = skb_shinfo(skb)->gso_size;
4259 ext->dg_hdr_len = proto_len;
4260}
4261
4262int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4263 struct qeth_qdio_out_q *queue, __be16 proto,
4264 void (*fill_header)(struct qeth_qdio_out_q *queue,
4265 struct qeth_hdr *hdr, struct sk_buff *skb,
4266 __be16 proto, unsigned int data_len))
4267{
4268 unsigned int proto_len, hw_hdr_len;
4269 unsigned int frame_len = skb->len;
4270 bool is_tso = skb_is_gso(skb);
4271 unsigned int data_offset = 0;
4272 struct qeth_hdr *hdr = NULL;
4273 unsigned int hd_len = 0;
4274 unsigned int elements;
4275 int push_len, rc;
4276
4277 if (is_tso) {
4278 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4279 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4280 } else {
4281 hw_hdr_len = sizeof(struct qeth_hdr);
4282 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4283 }
4284
4285 rc = skb_cow_head(skb, hw_hdr_len);
4286 if (rc)
4287 return rc;
4288
4289 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4290 &elements);
4291 if (push_len < 0)
4292 return push_len;
4293 if (is_tso || !push_len) {
4294
4295 hd_len = hw_hdr_len + proto_len;
4296 data_offset = push_len + proto_len;
4297 }
4298 memset(hdr, 0, hw_hdr_len);
4299 fill_header(queue, hdr, skb, proto, frame_len);
4300 if (is_tso)
4301 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4302 frame_len - proto_len, skb, proto_len);
4303
4304 if (IS_IQD(card)) {
4305 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4306 hd_len);
4307 } else {
4308
4309 skb_orphan(skb);
4310 spin_lock(&queue->lock);
4311 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4312 hd_len, elements);
4313 spin_unlock(&queue->lock);
4314 }
4315
4316 if (rc && !push_len)
4317 kmem_cache_free(qeth_core_header_cache, hdr);
4318
4319 return rc;
4320}
4321EXPORT_SYMBOL_GPL(qeth_xmit);
4322
4323static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4324 struct qeth_reply *reply, unsigned long data)
4325{
4326 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4327 struct qeth_ipacmd_setadpparms *setparms;
4328
4329 QETH_CARD_TEXT(card, 4, "prmadpcb");
4330
4331 setparms = &(cmd->data.setadapterparms);
4332 if (qeth_setadpparms_inspect_rc(cmd)) {
4333 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4334 setparms->data.mode = SET_PROMISC_MODE_OFF;
4335 }
4336 card->info.promisc_mode = setparms->data.mode;
4337 return (cmd->hdr.return_code) ? -EIO : 0;
4338}
4339
4340void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4341{
4342 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4343 SET_PROMISC_MODE_OFF;
4344 struct qeth_cmd_buffer *iob;
4345 struct qeth_ipa_cmd *cmd;
4346
4347 QETH_CARD_TEXT(card, 4, "setprom");
4348 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4349
4350 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4351 SETADP_DATA_SIZEOF(mode));
4352 if (!iob)
4353 return;
4354 cmd = __ipa_cmd(iob);
4355 cmd->data.setadapterparms.data.mode = mode;
4356 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4357}
4358EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4359
4360static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4361 struct qeth_reply *reply, unsigned long data)
4362{
4363 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4364 struct qeth_ipacmd_setadpparms *adp_cmd;
4365
4366 QETH_CARD_TEXT(card, 4, "chgmaccb");
4367 if (qeth_setadpparms_inspect_rc(cmd))
4368 return -EIO;
4369
4370 adp_cmd = &cmd->data.setadapterparms;
4371 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4372 return -EADDRNOTAVAIL;
4373
4374 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4375 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4376 return -EADDRNOTAVAIL;
4377
4378 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4379 return 0;
4380}
4381
4382int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4383{
4384 int rc;
4385 struct qeth_cmd_buffer *iob;
4386 struct qeth_ipa_cmd *cmd;
4387
4388 QETH_CARD_TEXT(card, 4, "chgmac");
4389
4390 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4391 SETADP_DATA_SIZEOF(change_addr));
4392 if (!iob)
4393 return -ENOMEM;
4394 cmd = __ipa_cmd(iob);
4395 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4396 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4397 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4398 card->dev->dev_addr);
4399 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4400 NULL);
4401 return rc;
4402}
4403EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4404
4405static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4406 struct qeth_reply *reply, unsigned long data)
4407{
4408 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4409 struct qeth_set_access_ctrl *access_ctrl_req;
4410
4411 QETH_CARD_TEXT(card, 4, "setaccb");
4412
4413 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4414 QETH_CARD_TEXT_(card, 2, "rc=%d",
4415 cmd->data.setadapterparms.hdr.return_code);
4416 if (cmd->data.setadapterparms.hdr.return_code !=
4417 SET_ACCESS_CTRL_RC_SUCCESS)
4418 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4419 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4420 cmd->data.setadapterparms.hdr.return_code);
4421 switch (qeth_setadpparms_inspect_rc(cmd)) {
4422 case SET_ACCESS_CTRL_RC_SUCCESS:
4423 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4424 dev_info(&card->gdev->dev,
4425 "QDIO data connection isolation is deactivated\n");
4426 else
4427 dev_info(&card->gdev->dev,
4428 "QDIO data connection isolation is activated\n");
4429 return 0;
4430 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4431 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4432 CARD_DEVID(card));
4433 return 0;
4434 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4435 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4436 CARD_DEVID(card));
4437 return 0;
4438 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4439 dev_err(&card->gdev->dev, "Adapter does not "
4440 "support QDIO data connection isolation\n");
4441 return -EOPNOTSUPP;
4442 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4443 dev_err(&card->gdev->dev,
4444 "Adapter is dedicated. "
4445 "QDIO data connection isolation not supported\n");
4446 return -EOPNOTSUPP;
4447 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4448 dev_err(&card->gdev->dev,
4449 "TSO does not permit QDIO data connection isolation\n");
4450 return -EPERM;
4451 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4452 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4453 "support reflective relay mode\n");
4454 return -EOPNOTSUPP;
4455 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4456 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4457 "enabled at the adjacent switch port");
4458 return -EREMOTEIO;
4459 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4460 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4461 "at the adjacent switch failed\n");
4462
4463 return 0;
4464 default:
4465 return -EIO;
4466 }
4467}
4468
4469int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4470 enum qeth_ipa_isolation_modes mode)
4471{
4472 int rc;
4473 struct qeth_cmd_buffer *iob;
4474 struct qeth_ipa_cmd *cmd;
4475 struct qeth_set_access_ctrl *access_ctrl_req;
4476
4477 QETH_CARD_TEXT(card, 4, "setacctl");
4478
4479 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4480 dev_err(&card->gdev->dev,
4481 "Adapter does not support QDIO data connection isolation\n");
4482 return -EOPNOTSUPP;
4483 }
4484
4485 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4486 SETADP_DATA_SIZEOF(set_access_ctrl));
4487 if (!iob)
4488 return -ENOMEM;
4489 cmd = __ipa_cmd(iob);
4490 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4491 access_ctrl_req->subcmd_code = mode;
4492
4493 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4494 NULL);
4495 if (rc) {
4496 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4497 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4498 rc, CARD_DEVID(card));
4499 }
4500
4501 return rc;
4502}
4503
4504void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4505{
4506 struct qeth_card *card;
4507
4508 card = dev->ml_priv;
4509 QETH_CARD_TEXT(card, 4, "txtimeo");
4510 qeth_schedule_recovery(card);
4511}
4512EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4513
4514static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4515{
4516 struct qeth_card *card = dev->ml_priv;
4517 int rc = 0;
4518
4519 switch (regnum) {
4520 case MII_BMCR:
4521 rc = BMCR_FULLDPLX;
4522 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4523 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4524 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4525 rc |= BMCR_SPEED100;
4526 break;
4527 case MII_BMSR:
4528 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4529 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4530 BMSR_100BASE4;
4531 break;
4532 case MII_PHYSID1:
4533 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4534 dev->dev_addr[2];
4535 rc = (rc >> 5) & 0xFFFF;
4536 break;
4537 case MII_PHYSID2:
4538 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4539 break;
4540 case MII_ADVERTISE:
4541 rc = ADVERTISE_ALL;
4542 break;
4543 case MII_LPA:
4544 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4545 LPA_100BASE4 | LPA_LPACK;
4546 break;
4547 case MII_EXPANSION:
4548 break;
4549 case MII_DCOUNTER:
4550 break;
4551 case MII_FCSCOUNTER:
4552 break;
4553 case MII_NWAYTEST:
4554 break;
4555 case MII_RERRCOUNTER:
4556 rc = card->stats.rx_length_errors +
4557 card->stats.rx_frame_errors +
4558 card->stats.rx_fifo_errors;
4559 break;
4560 case MII_SREVISION:
4561 break;
4562 case MII_RESV1:
4563 break;
4564 case MII_LBRERROR:
4565 break;
4566 case MII_PHYADDR:
4567 break;
4568 case MII_RESV2:
4569 break;
4570 case MII_TPISTATUS:
4571 break;
4572 case MII_NCONFIG:
4573 break;
4574 default:
4575 break;
4576 }
4577 return rc;
4578}
4579
4580static int qeth_snmp_command_cb(struct qeth_card *card,
4581 struct qeth_reply *reply, unsigned long data)
4582{
4583 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4584 struct qeth_arp_query_info *qinfo = reply->param;
4585 struct qeth_ipacmd_setadpparms *adp_cmd;
4586 unsigned int data_len;
4587 void *snmp_data;
4588
4589 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4590
4591 if (cmd->hdr.return_code) {
4592 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4593 return -EIO;
4594 }
4595 if (cmd->data.setadapterparms.hdr.return_code) {
4596 cmd->hdr.return_code =
4597 cmd->data.setadapterparms.hdr.return_code;
4598 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4599 return -EIO;
4600 }
4601
4602 adp_cmd = &cmd->data.setadapterparms;
4603 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4604 if (adp_cmd->hdr.seq_no == 1) {
4605 snmp_data = &adp_cmd->data.snmp;
4606 } else {
4607 snmp_data = &adp_cmd->data.snmp.request;
4608 data_len -= offsetof(struct qeth_snmp_cmd, request);
4609 }
4610
4611
4612 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4613 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4614 return -ENOSPC;
4615 }
4616 QETH_CARD_TEXT_(card, 4, "snore%i",
4617 cmd->data.setadapterparms.hdr.used_total);
4618 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4619 cmd->data.setadapterparms.hdr.seq_no);
4620
4621 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4622 qinfo->udata_offset += data_len;
4623
4624 if (cmd->data.setadapterparms.hdr.seq_no <
4625 cmd->data.setadapterparms.hdr.used_total)
4626 return 1;
4627 return 0;
4628}
4629
4630static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4631{
4632 struct qeth_snmp_ureq __user *ureq;
4633 struct qeth_cmd_buffer *iob;
4634 unsigned int req_len;
4635 struct qeth_arp_query_info qinfo = {0, };
4636 int rc = 0;
4637
4638 QETH_CARD_TEXT(card, 3, "snmpcmd");
4639
4640 if (IS_VM_NIC(card))
4641 return -EOPNOTSUPP;
4642
4643 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4644 IS_LAYER3(card))
4645 return -EOPNOTSUPP;
4646
4647 ureq = (struct qeth_snmp_ureq __user *) udata;
4648 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4649 get_user(req_len, &ureq->hdr.req_len))
4650 return -EFAULT;
4651
4652
4653 if (req_len > QETH_BUFSIZE)
4654 return -EINVAL;
4655
4656 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4657 if (!iob)
4658 return -ENOMEM;
4659
4660 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4661 &ureq->cmd, req_len)) {
4662 qeth_put_cmd(iob);
4663 return -EFAULT;
4664 }
4665
4666 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4667 if (!qinfo.udata) {
4668 qeth_put_cmd(iob);
4669 return -ENOMEM;
4670 }
4671 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4672
4673 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4674 if (rc)
4675 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4676 CARD_DEVID(card), rc);
4677 else {
4678 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4679 rc = -EFAULT;
4680 }
4681
4682 kfree(qinfo.udata);
4683 return rc;
4684}
4685
4686static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4687 struct qeth_reply *reply,
4688 unsigned long data)
4689{
4690 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4691 struct qeth_qoat_priv *priv = reply->param;
4692 int resdatalen;
4693
4694 QETH_CARD_TEXT(card, 3, "qoatcb");
4695 if (qeth_setadpparms_inspect_rc(cmd))
4696 return -EIO;
4697
4698 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4699
4700 if (resdatalen > (priv->buffer_len - priv->response_len))
4701 return -ENOSPC;
4702
4703 memcpy(priv->buffer + priv->response_len,
4704 &cmd->data.setadapterparms.hdr, resdatalen);
4705 priv->response_len += resdatalen;
4706
4707 if (cmd->data.setadapterparms.hdr.seq_no <
4708 cmd->data.setadapterparms.hdr.used_total)
4709 return 1;
4710 return 0;
4711}
4712
4713static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4714{
4715 int rc = 0;
4716 struct qeth_cmd_buffer *iob;
4717 struct qeth_ipa_cmd *cmd;
4718 struct qeth_query_oat *oat_req;
4719 struct qeth_query_oat_data oat_data;
4720 struct qeth_qoat_priv priv;
4721 void __user *tmp;
4722
4723 QETH_CARD_TEXT(card, 3, "qoatcmd");
4724
4725 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4726 return -EOPNOTSUPP;
4727
4728 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4729 return -EFAULT;
4730
4731 priv.buffer_len = oat_data.buffer_len;
4732 priv.response_len = 0;
4733 priv.buffer = vzalloc(oat_data.buffer_len);
4734 if (!priv.buffer)
4735 return -ENOMEM;
4736
4737 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4738 SETADP_DATA_SIZEOF(query_oat));
4739 if (!iob) {
4740 rc = -ENOMEM;
4741 goto out_free;
4742 }
4743 cmd = __ipa_cmd(iob);
4744 oat_req = &cmd->data.setadapterparms.data.query_oat;
4745 oat_req->subcmd_code = oat_data.command;
4746
4747 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4748 if (!rc) {
4749 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4750 u64_to_user_ptr(oat_data.ptr);
4751 oat_data.response_len = priv.response_len;
4752
4753 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4754 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4755 rc = -EFAULT;
4756 }
4757
4758out_free:
4759 vfree(priv.buffer);
4760 return rc;
4761}
4762
4763static int qeth_query_card_info_cb(struct qeth_card *card,
4764 struct qeth_reply *reply, unsigned long data)
4765{
4766 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4767 struct qeth_link_info *link_info = reply->param;
4768 struct qeth_query_card_info *card_info;
4769
4770 QETH_CARD_TEXT(card, 2, "qcrdincb");
4771 if (qeth_setadpparms_inspect_rc(cmd))
4772 return -EIO;
4773
4774 card_info = &cmd->data.setadapterparms.data.card_info;
4775 netdev_dbg(card->dev,
4776 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4777 card_info->card_type, card_info->port_mode,
4778 card_info->port_speed);
4779
4780 switch (card_info->port_mode) {
4781 case CARD_INFO_PORTM_FULLDUPLEX:
4782 link_info->duplex = DUPLEX_FULL;
4783 break;
4784 case CARD_INFO_PORTM_HALFDUPLEX:
4785 link_info->duplex = DUPLEX_HALF;
4786 break;
4787 default:
4788 link_info->duplex = DUPLEX_UNKNOWN;
4789 }
4790
4791 switch (card_info->card_type) {
4792 case CARD_INFO_TYPE_1G_COPPER_A:
4793 case CARD_INFO_TYPE_1G_COPPER_B:
4794 link_info->speed = SPEED_1000;
4795 link_info->port = PORT_TP;
4796 break;
4797 case CARD_INFO_TYPE_1G_FIBRE_A:
4798 case CARD_INFO_TYPE_1G_FIBRE_B:
4799 link_info->speed = SPEED_1000;
4800 link_info->port = PORT_FIBRE;
4801 break;
4802 case CARD_INFO_TYPE_10G_FIBRE_A:
4803 case CARD_INFO_TYPE_10G_FIBRE_B:
4804 link_info->speed = SPEED_10000;
4805 link_info->port = PORT_FIBRE;
4806 break;
4807 default:
4808 switch (card_info->port_speed) {
4809 case CARD_INFO_PORTS_10M:
4810 link_info->speed = SPEED_10;
4811 break;
4812 case CARD_INFO_PORTS_100M:
4813 link_info->speed = SPEED_100;
4814 break;
4815 case CARD_INFO_PORTS_1G:
4816 link_info->speed = SPEED_1000;
4817 break;
4818 case CARD_INFO_PORTS_10G:
4819 link_info->speed = SPEED_10000;
4820 break;
4821 case CARD_INFO_PORTS_25G:
4822 link_info->speed = SPEED_25000;
4823 break;
4824 default:
4825 link_info->speed = SPEED_UNKNOWN;
4826 }
4827
4828 link_info->port = PORT_OTHER;
4829 }
4830
4831 return 0;
4832}
4833
4834int qeth_query_card_info(struct qeth_card *card,
4835 struct qeth_link_info *link_info)
4836{
4837 struct qeth_cmd_buffer *iob;
4838
4839 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4840 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4841 return -EOPNOTSUPP;
4842 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4843 if (!iob)
4844 return -ENOMEM;
4845
4846 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
4847}
4848
4849static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4850 struct qeth_reply *reply_priv,
4851 unsigned long data)
4852{
4853 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4854 struct qeth_link_info *link_info = reply_priv->param;
4855 struct qeth_query_oat_physical_if *phys_if;
4856 struct qeth_query_oat_reply *reply;
4857
4858 if (qeth_setadpparms_inspect_rc(cmd))
4859 return -EIO;
4860
4861
4862 if (cmd->data.setadapterparms.hdr.used_total > 1)
4863 return -EINVAL;
4864
4865
4866 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4867 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4868 reply->length < sizeof(*reply))
4869 return -EINVAL;
4870
4871 phys_if = &reply->phys_if;
4872
4873 switch (phys_if->speed_duplex) {
4874 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4875 link_info->speed = SPEED_10;
4876 link_info->duplex = DUPLEX_HALF;
4877 break;
4878 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4879 link_info->speed = SPEED_10;
4880 link_info->duplex = DUPLEX_FULL;
4881 break;
4882 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4883 link_info->speed = SPEED_100;
4884 link_info->duplex = DUPLEX_HALF;
4885 break;
4886 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4887 link_info->speed = SPEED_100;
4888 link_info->duplex = DUPLEX_FULL;
4889 break;
4890 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4891 link_info->speed = SPEED_1000;
4892 link_info->duplex = DUPLEX_HALF;
4893 break;
4894 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4895 link_info->speed = SPEED_1000;
4896 link_info->duplex = DUPLEX_FULL;
4897 break;
4898 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4899 link_info->speed = SPEED_10000;
4900 link_info->duplex = DUPLEX_FULL;
4901 break;
4902 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4903 link_info->speed = SPEED_25000;
4904 link_info->duplex = DUPLEX_FULL;
4905 break;
4906 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4907 default:
4908 link_info->speed = SPEED_UNKNOWN;
4909 link_info->duplex = DUPLEX_UNKNOWN;
4910 break;
4911 }
4912
4913 switch (phys_if->media_type) {
4914 case QETH_QOAT_PHYS_MEDIA_COPPER:
4915 link_info->port = PORT_TP;
4916 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4917 break;
4918 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
4919 link_info->port = PORT_FIBRE;
4920 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4921 break;
4922 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4923 link_info->port = PORT_FIBRE;
4924 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
4925 break;
4926 default:
4927 link_info->port = PORT_OTHER;
4928 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4929 break;
4930 }
4931
4932 return 0;
4933}
4934
4935static void qeth_init_link_info(struct qeth_card *card)
4936{
4937 card->info.link_info.duplex = DUPLEX_FULL;
4938
4939 if (IS_IQD(card) || IS_VM_NIC(card)) {
4940 card->info.link_info.speed = SPEED_10000;
4941 card->info.link_info.port = PORT_FIBRE;
4942 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4943 } else {
4944 switch (card->info.link_type) {
4945 case QETH_LINK_TYPE_FAST_ETH:
4946 case QETH_LINK_TYPE_LANE_ETH100:
4947 card->info.link_info.speed = SPEED_100;
4948 card->info.link_info.port = PORT_TP;
4949 break;
4950 case QETH_LINK_TYPE_GBIT_ETH:
4951 case QETH_LINK_TYPE_LANE_ETH1000:
4952 card->info.link_info.speed = SPEED_1000;
4953 card->info.link_info.port = PORT_FIBRE;
4954 break;
4955 case QETH_LINK_TYPE_10GBIT_ETH:
4956 card->info.link_info.speed = SPEED_10000;
4957 card->info.link_info.port = PORT_FIBRE;
4958 break;
4959 case QETH_LINK_TYPE_25GBIT_ETH:
4960 card->info.link_info.speed = SPEED_25000;
4961 card->info.link_info.port = PORT_FIBRE;
4962 break;
4963 default:
4964 dev_info(&card->gdev->dev, "Unknown link type %x\n",
4965 card->info.link_type);
4966 card->info.link_info.speed = SPEED_UNKNOWN;
4967 card->info.link_info.port = PORT_OTHER;
4968 }
4969
4970 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
4971 }
4972
4973
4974 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4975 struct qeth_link_info link_info;
4976 struct qeth_cmd_buffer *iob;
4977
4978 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4979 SETADP_DATA_SIZEOF(query_oat));
4980 if (iob) {
4981 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4982 struct qeth_query_oat *oat_req;
4983
4984 oat_req = &cmd->data.setadapterparms.data.query_oat;
4985 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4986
4987 if (!qeth_send_ipa_cmd(card, iob,
4988 qeth_init_link_info_oat_cb,
4989 &link_info)) {
4990 if (link_info.speed != SPEED_UNKNOWN)
4991 card->info.link_info.speed = link_info.speed;
4992 if (link_info.duplex != DUPLEX_UNKNOWN)
4993 card->info.link_info.duplex = link_info.duplex;
4994 if (link_info.port != PORT_OTHER)
4995 card->info.link_info.port = link_info.port;
4996 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4997 card->info.link_info.link_mode = link_info.link_mode;
4998 }
4999 }
5000 }
5001}
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011int qeth_vm_request_mac(struct qeth_card *card)
5012{
5013 struct diag26c_mac_resp *response;
5014 struct diag26c_mac_req *request;
5015 int rc;
5016
5017 QETH_CARD_TEXT(card, 2, "vmreqmac");
5018
5019 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5020 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5021 if (!request || !response) {
5022 rc = -ENOMEM;
5023 goto out;
5024 }
5025
5026 request->resp_buf_len = sizeof(*response);
5027 request->resp_version = DIAG26C_VERSION2;
5028 request->op_code = DIAG26C_GET_MAC;
5029 request->devno = card->info.ddev_devno;
5030
5031 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5032 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
5033 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5034 if (rc)
5035 goto out;
5036 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
5037
5038 if (request->resp_buf_len < sizeof(*response) ||
5039 response->version != request->resp_version) {
5040 rc = -EIO;
5041 QETH_CARD_TEXT(card, 2, "badresp");
5042 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5043 sizeof(request->resp_buf_len));
5044 } else if (!is_valid_ether_addr(response->mac)) {
5045 rc = -EINVAL;
5046 QETH_CARD_TEXT(card, 2, "badmac");
5047 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
5048 } else {
5049 ether_addr_copy(card->dev->dev_addr, response->mac);
5050 }
5051
5052out:
5053 kfree(response);
5054 kfree(request);
5055 return rc;
5056}
5057EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5058
5059static void qeth_determine_capabilities(struct qeth_card *card)
5060{
5061 struct qeth_channel *channel = &card->data;
5062 struct ccw_device *ddev = channel->ccwdev;
5063 int rc;
5064 int ddev_offline = 0;
5065
5066 QETH_CARD_TEXT(card, 2, "detcapab");
5067 if (!ddev->online) {
5068 ddev_offline = 1;
5069 rc = qeth_start_channel(channel);
5070 if (rc) {
5071 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5072 goto out;
5073 }
5074 }
5075
5076 rc = qeth_read_conf_data(card);
5077 if (rc) {
5078 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5079 CARD_DEVID(card), rc);
5080 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5081 goto out_offline;
5082 }
5083
5084 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5085 if (rc)
5086 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5087
5088 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5089 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5090 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5091 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5092 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5093 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5094 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5095 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5096 dev_info(&card->gdev->dev,
5097 "Completion Queueing supported\n");
5098 } else {
5099 card->options.cq = QETH_CQ_NOTAVAILABLE;
5100 }
5101
5102out_offline:
5103 if (ddev_offline == 1)
5104 qeth_stop_channel(channel);
5105out:
5106 return;
5107}
5108
5109static void qeth_read_ccw_conf_data(struct qeth_card *card)
5110{
5111 struct qeth_card_info *info = &card->info;
5112 struct ccw_device *cdev = CARD_DDEV(card);
5113 struct ccw_dev_id dev_id;
5114
5115 QETH_CARD_TEXT(card, 2, "ccwconfd");
5116 ccw_device_get_id(cdev, &dev_id);
5117
5118 info->ddev_devno = dev_id.devno;
5119 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5120 !ccw_device_get_iid(cdev, &info->iid) &&
5121 !ccw_device_get_chid(cdev, 0, &info->chid);
5122 info->ssid = dev_id.ssid;
5123
5124 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5125 info->chid, info->chpid);
5126
5127 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5128 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5129 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5130 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5131 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5132 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5133 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5134}
5135
5136static int qeth_qdio_establish(struct qeth_card *card)
5137{
5138 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5139 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5140 struct qeth_qib_parms *qib_parms = NULL;
5141 struct qdio_initialize init_data;
5142 unsigned int i;
5143 int rc = 0;
5144
5145 QETH_CARD_TEXT(card, 2, "qdioest");
5146
5147 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5148 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5149 if (!qib_parms)
5150 return -ENOMEM;
5151
5152 qeth_fill_qib_parms(card, qib_parms);
5153 }
5154
5155 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5156 if (card->options.cq == QETH_CQ_ENABLED)
5157 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5158
5159 for (i = 0; i < card->qdio.no_out_queues; i++)
5160 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5161
5162 memset(&init_data, 0, sizeof(struct qdio_initialize));
5163 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5164 QDIO_QETH_QFMT;
5165 init_data.qib_param_field_format = 0;
5166 init_data.qib_param_field = (void *)qib_parms;
5167 init_data.no_input_qs = card->qdio.no_in_queues;
5168 init_data.no_output_qs = card->qdio.no_out_queues;
5169 init_data.input_handler = qeth_qdio_input_handler;
5170 init_data.output_handler = qeth_qdio_output_handler;
5171 init_data.irq_poll = qeth_qdio_poll;
5172 init_data.int_parm = (unsigned long) card;
5173 init_data.input_sbal_addr_array = in_sbal_ptrs;
5174 init_data.output_sbal_addr_array = out_sbal_ptrs;
5175
5176 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5177 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5178 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5179 init_data.no_output_qs);
5180 if (rc) {
5181 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5182 goto out;
5183 }
5184 rc = qdio_establish(CARD_DDEV(card), &init_data);
5185 if (rc) {
5186 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5187 qdio_free(CARD_DDEV(card));
5188 }
5189 }
5190
5191 switch (card->options.cq) {
5192 case QETH_CQ_ENABLED:
5193 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5194 break;
5195 case QETH_CQ_DISABLED:
5196 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5197 break;
5198 default:
5199 break;
5200 }
5201
5202out:
5203 kfree(qib_parms);
5204 return rc;
5205}
5206
5207static void qeth_core_free_card(struct qeth_card *card)
5208{
5209 QETH_CARD_TEXT(card, 2, "freecrd");
5210
5211 unregister_service_level(&card->qeth_service_level);
5212 debugfs_remove_recursive(card->debugfs);
5213 qeth_put_cmd(card->read_cmd);
5214 destroy_workqueue(card->event_wq);
5215 dev_set_drvdata(&card->gdev->dev, NULL);
5216 kfree(card);
5217}
5218
5219static void qeth_trace_features(struct qeth_card *card)
5220{
5221 QETH_CARD_TEXT(card, 2, "features");
5222 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5223 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5224 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5225 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5226 sizeof(card->info.diagass_support));
5227}
5228
5229static struct ccw_device_id qeth_ids[] = {
5230 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5231 .driver_info = QETH_CARD_TYPE_OSD},
5232 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5233 .driver_info = QETH_CARD_TYPE_IQD},
5234 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5235 .driver_info = QETH_CARD_TYPE_OSM},
5236#ifdef CONFIG_QETH_OSX
5237 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5238 .driver_info = QETH_CARD_TYPE_OSX},
5239#endif
5240 {},
5241};
5242MODULE_DEVICE_TABLE(ccw, qeth_ids);
5243
5244static struct ccw_driver qeth_ccw_driver = {
5245 .driver = {
5246 .owner = THIS_MODULE,
5247 .name = "qeth",
5248 },
5249 .ids = qeth_ids,
5250 .probe = ccwgroup_probe_ccwdev,
5251 .remove = ccwgroup_remove_ccwdev,
5252};
5253
5254static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5255{
5256 int retries = 3;
5257 int rc;
5258
5259 QETH_CARD_TEXT(card, 2, "hrdsetup");
5260 atomic_set(&card->force_alloc_skb, 0);
5261 rc = qeth_update_from_chp_desc(card);
5262 if (rc)
5263 return rc;
5264retry:
5265 if (retries < 3)
5266 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5267 CARD_DEVID(card));
5268 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5269 qeth_stop_channel(&card->data);
5270 qeth_stop_channel(&card->write);
5271 qeth_stop_channel(&card->read);
5272 qdio_free(CARD_DDEV(card));
5273
5274 rc = qeth_start_channel(&card->read);
5275 if (rc)
5276 goto retriable;
5277 rc = qeth_start_channel(&card->write);
5278 if (rc)
5279 goto retriable;
5280 rc = qeth_start_channel(&card->data);
5281 if (rc)
5282 goto retriable;
5283retriable:
5284 if (rc == -ERESTARTSYS) {
5285 QETH_CARD_TEXT(card, 2, "break1");
5286 return rc;
5287 } else if (rc) {
5288 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5289 if (--retries < 0)
5290 goto out;
5291 else
5292 goto retry;
5293 }
5294
5295 qeth_determine_capabilities(card);
5296 qeth_read_ccw_conf_data(card);
5297 qeth_idx_init(card);
5298
5299 rc = qeth_idx_activate_read_channel(card);
5300 if (rc == -EINTR) {
5301 QETH_CARD_TEXT(card, 2, "break2");
5302 return rc;
5303 } else if (rc) {
5304 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5305 if (--retries < 0)
5306 goto out;
5307 else
5308 goto retry;
5309 }
5310
5311 rc = qeth_idx_activate_write_channel(card);
5312 if (rc == -EINTR) {
5313 QETH_CARD_TEXT(card, 2, "break3");
5314 return rc;
5315 } else if (rc) {
5316 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5317 if (--retries < 0)
5318 goto out;
5319 else
5320 goto retry;
5321 }
5322 card->read_or_write_problem = 0;
5323 rc = qeth_mpc_initialize(card);
5324 if (rc) {
5325 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5326 goto out;
5327 }
5328
5329 rc = qeth_send_startlan(card);
5330 if (rc) {
5331 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5332 if (rc == -ENETDOWN) {
5333 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5334 *carrier_ok = false;
5335 } else {
5336 goto out;
5337 }
5338 } else {
5339 *carrier_ok = true;
5340 }
5341
5342 card->options.ipa4.supported = 0;
5343 card->options.ipa6.supported = 0;
5344 card->options.adp.supported = 0;
5345 card->options.sbp.supported_funcs = 0;
5346 card->info.diagass_support = 0;
5347 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5348 if (rc == -ENOMEM)
5349 goto out;
5350 if (qeth_is_supported(card, IPA_IPV6)) {
5351 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5352 if (rc == -ENOMEM)
5353 goto out;
5354 }
5355 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5356 rc = qeth_query_setadapterparms(card);
5357 if (rc < 0) {
5358 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5359 goto out;
5360 }
5361 }
5362 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5363 rc = qeth_query_setdiagass(card);
5364 if (rc)
5365 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5366 }
5367
5368 qeth_trace_features(card);
5369
5370 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5371 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5372 card->info.hwtrap = 0;
5373
5374 if (card->options.isolation != ISOLATION_MODE_NONE) {
5375 rc = qeth_setadpparms_set_access_ctrl(card,
5376 card->options.isolation);
5377 if (rc)
5378 goto out;
5379 }
5380
5381 qeth_init_link_info(card);
5382
5383 rc = qeth_init_qdio_queues(card);
5384 if (rc) {
5385 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5386 goto out;
5387 }
5388
5389 return 0;
5390out:
5391 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5392 "an error on the device\n");
5393 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5394 CARD_DEVID(card), rc);
5395 return rc;
5396}
5397
5398static int qeth_set_online(struct qeth_card *card,
5399 const struct qeth_discipline *disc)
5400{
5401 bool carrier_ok;
5402 int rc;
5403
5404 mutex_lock(&card->conf_mutex);
5405 QETH_CARD_TEXT(card, 2, "setonlin");
5406
5407 rc = qeth_hardsetup_card(card, &carrier_ok);
5408 if (rc) {
5409 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5410 rc = -ENODEV;
5411 goto err_hardsetup;
5412 }
5413
5414 qeth_print_status_message(card);
5415
5416 if (card->dev->reg_state != NETREG_REGISTERED)
5417
5418 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5419
5420 rc = disc->set_online(card, carrier_ok);
5421 if (rc)
5422 goto err_online;
5423
5424
5425 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5426
5427 mutex_unlock(&card->conf_mutex);
5428 return 0;
5429
5430err_online:
5431err_hardsetup:
5432 qeth_qdio_clear_card(card, 0);
5433 qeth_clear_working_pool_list(card);
5434 qeth_flush_local_addrs(card);
5435
5436 qeth_stop_channel(&card->data);
5437 qeth_stop_channel(&card->write);
5438 qeth_stop_channel(&card->read);
5439 qdio_free(CARD_DDEV(card));
5440
5441 mutex_unlock(&card->conf_mutex);
5442 return rc;
5443}
5444
5445int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5446 bool resetting)
5447{
5448 int rc, rc2, rc3;
5449
5450 mutex_lock(&card->conf_mutex);
5451 QETH_CARD_TEXT(card, 3, "setoffl");
5452
5453 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5454 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5455 card->info.hwtrap = 1;
5456 }
5457
5458
5459 qeth_clear_ipacmd_list(card);
5460
5461 rtnl_lock();
5462 card->info.open_when_online = card->dev->flags & IFF_UP;
5463 dev_close(card->dev);
5464 netif_device_detach(card->dev);
5465 netif_carrier_off(card->dev);
5466 rtnl_unlock();
5467
5468 cancel_work_sync(&card->rx_mode_work);
5469
5470 disc->set_offline(card);
5471
5472 qeth_qdio_clear_card(card, 0);
5473 qeth_drain_output_queues(card);
5474 qeth_clear_working_pool_list(card);
5475 qeth_flush_local_addrs(card);
5476 card->info.promisc_mode = 0;
5477
5478 rc = qeth_stop_channel(&card->data);
5479 rc2 = qeth_stop_channel(&card->write);
5480 rc3 = qeth_stop_channel(&card->read);
5481 if (!rc)
5482 rc = (rc2) ? rc2 : rc3;
5483 if (rc)
5484 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5485 qdio_free(CARD_DDEV(card));
5486
5487
5488 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5489
5490 mutex_unlock(&card->conf_mutex);
5491 return 0;
5492}
5493EXPORT_SYMBOL_GPL(qeth_set_offline);
5494
5495static int qeth_do_reset(void *data)
5496{
5497 const struct qeth_discipline *disc;
5498 struct qeth_card *card = data;
5499 int rc;
5500
5501
5502 disc = card->discipline;
5503
5504 QETH_CARD_TEXT(card, 2, "recover1");
5505 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5506 return 0;
5507 QETH_CARD_TEXT(card, 2, "recover2");
5508 dev_warn(&card->gdev->dev,
5509 "A recovery process has been started for the device\n");
5510
5511 qeth_set_offline(card, disc, true);
5512 rc = qeth_set_online(card, disc);
5513 if (!rc) {
5514 dev_info(&card->gdev->dev,
5515 "Device successfully recovered!\n");
5516 } else {
5517 qeth_set_offline(card, disc, true);
5518 ccwgroup_set_offline(card->gdev, false);
5519 dev_warn(&card->gdev->dev,
5520 "The qeth device driver failed to recover an error on the device\n");
5521 }
5522 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5523 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5524 return 0;
5525}
5526
5527#if IS_ENABLED(CONFIG_QETH_L3)
5528static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5529 struct qeth_hdr *hdr)
5530{
5531 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5532 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5533 struct net_device *dev = skb->dev;
5534
5535 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5536 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5537 "FAKELL", skb->len);
5538 return;
5539 }
5540
5541 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5542 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5543 ETH_P_IP;
5544 unsigned char tg_addr[ETH_ALEN];
5545
5546 skb_reset_network_header(skb);
5547 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5548 case QETH_CAST_MULTICAST:
5549 if (prot == ETH_P_IP)
5550 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5551 else
5552 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5553 QETH_CARD_STAT_INC(card, rx_multicast);
5554 break;
5555 case QETH_CAST_BROADCAST:
5556 ether_addr_copy(tg_addr, dev->broadcast);
5557 QETH_CARD_STAT_INC(card, rx_multicast);
5558 break;
5559 default:
5560 if (card->options.sniffer)
5561 skb->pkt_type = PACKET_OTHERHOST;
5562 ether_addr_copy(tg_addr, dev->dev_addr);
5563 }
5564
5565 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5566 dev_hard_header(skb, dev, prot, tg_addr,
5567 &l3_hdr->next_hop.rx.src_mac, skb->len);
5568 else
5569 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5570 skb->len);
5571 }
5572
5573
5574 if (!card->options.sniffer &&
5575 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5576 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5577 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5578 l3_hdr->vlan_id :
5579 l3_hdr->next_hop.rx.vlan_id;
5580
5581 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5582 }
5583}
5584#endif
5585
5586static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5587 struct qeth_hdr *hdr, bool uses_frags)
5588{
5589 struct napi_struct *napi = &card->napi;
5590 bool is_cso;
5591
5592 switch (hdr->hdr.l2.id) {
5593#if IS_ENABLED(CONFIG_QETH_L3)
5594 case QETH_HEADER_TYPE_LAYER3:
5595 qeth_l3_rebuild_skb(card, skb, hdr);
5596 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5597 break;
5598#endif
5599 case QETH_HEADER_TYPE_LAYER2:
5600 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5601 break;
5602 default:
5603
5604 if (uses_frags)
5605 napi_free_frags(napi);
5606 else
5607 dev_kfree_skb_any(skb);
5608 return;
5609 }
5610
5611 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5612 skb->ip_summed = CHECKSUM_UNNECESSARY;
5613 QETH_CARD_STAT_INC(card, rx_skb_csum);
5614 } else {
5615 skb->ip_summed = CHECKSUM_NONE;
5616 }
5617
5618 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5619 QETH_CARD_STAT_INC(card, rx_packets);
5620 if (skb_is_nonlinear(skb)) {
5621 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5622 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5623 skb_shinfo(skb)->nr_frags);
5624 }
5625
5626 if (uses_frags) {
5627 napi_gro_frags(napi);
5628 } else {
5629 skb->protocol = eth_type_trans(skb, skb->dev);
5630 napi_gro_receive(napi, skb);
5631 }
5632}
5633
5634static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5635{
5636 struct page *page = virt_to_page(data);
5637 unsigned int next_frag;
5638
5639 next_frag = skb_shinfo(skb)->nr_frags;
5640 get_page(page);
5641 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5642 data_len);
5643}
5644
5645static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5646{
5647 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5648}
5649
5650static int qeth_extract_skb(struct qeth_card *card,
5651 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5652 int *__offset)
5653{
5654 struct qeth_priv *priv = netdev_priv(card->dev);
5655 struct qdio_buffer *buffer = qethbuffer->buffer;
5656 struct napi_struct *napi = &card->napi;
5657 struct qdio_buffer_element *element;
5658 unsigned int linear_len = 0;
5659 bool uses_frags = false;
5660 int offset = *__offset;
5661 bool use_rx_sg = false;
5662 unsigned int headroom;
5663 struct qeth_hdr *hdr;
5664 struct sk_buff *skb;
5665 int skb_len = 0;
5666
5667 element = &buffer->element[*element_no];
5668
5669next_packet:
5670
5671 while (element->length < offset + sizeof(struct qeth_hdr)) {
5672 if (qeth_is_last_sbale(element))
5673 return -ENODATA;
5674 element++;
5675 offset = 0;
5676 }
5677
5678 hdr = phys_to_virt(element->addr) + offset;
5679 offset += sizeof(*hdr);
5680 skb = NULL;
5681
5682 switch (hdr->hdr.l2.id) {
5683 case QETH_HEADER_TYPE_LAYER2:
5684 skb_len = hdr->hdr.l2.pkt_length;
5685 linear_len = ETH_HLEN;
5686 headroom = 0;
5687 break;
5688 case QETH_HEADER_TYPE_LAYER3:
5689 skb_len = hdr->hdr.l3.length;
5690 if (!IS_LAYER3(card)) {
5691 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5692 goto walk_packet;
5693 }
5694
5695 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5696 linear_len = ETH_HLEN;
5697 headroom = 0;
5698 break;
5699 }
5700
5701 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5702 linear_len = sizeof(struct ipv6hdr);
5703 else
5704 linear_len = sizeof(struct iphdr);
5705 headroom = ETH_HLEN;
5706 break;
5707 default:
5708 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5709 QETH_CARD_STAT_INC(card, rx_frame_errors);
5710 else
5711 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5712
5713
5714 return -EPROTONOSUPPORT;
5715 }
5716
5717 if (skb_len < linear_len) {
5718 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5719 goto walk_packet;
5720 }
5721
5722 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5723 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5724 !atomic_read(&card->force_alloc_skb));
5725
5726 if (use_rx_sg) {
5727
5728 if (qethbuffer->rx_skb &&
5729 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5730 skb = qethbuffer->rx_skb;
5731 qethbuffer->rx_skb = NULL;
5732 goto use_skb;
5733 }
5734
5735 skb = napi_get_frags(napi);
5736 if (!skb) {
5737
5738 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5739 goto walk_packet;
5740 }
5741
5742 if (skb_tailroom(skb) >= linear_len + headroom) {
5743 uses_frags = true;
5744 goto use_skb;
5745 }
5746
5747 netdev_info_once(card->dev,
5748 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5749 linear_len + headroom, skb_tailroom(skb));
5750
5751 }
5752
5753 linear_len = skb_len;
5754 skb = napi_alloc_skb(napi, linear_len + headroom);
5755 if (!skb) {
5756 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5757 goto walk_packet;
5758 }
5759
5760use_skb:
5761 if (headroom)
5762 skb_reserve(skb, headroom);
5763walk_packet:
5764 while (skb_len) {
5765 int data_len = min(skb_len, (int)(element->length - offset));
5766 char *data = phys_to_virt(element->addr) + offset;
5767
5768 skb_len -= data_len;
5769 offset += data_len;
5770
5771
5772 if (skb && data_len) {
5773 if (linear_len) {
5774 unsigned int copy_len;
5775
5776 copy_len = min_t(unsigned int, linear_len,
5777 data_len);
5778
5779 skb_put_data(skb, data, copy_len);
5780 linear_len -= copy_len;
5781 data_len -= copy_len;
5782 data += copy_len;
5783 }
5784
5785 if (data_len)
5786 qeth_create_skb_frag(skb, data, data_len);
5787 }
5788
5789
5790 if (skb_len) {
5791 if (qeth_is_last_sbale(element)) {
5792 QETH_CARD_TEXT(card, 4, "unexeob");
5793 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5794 if (skb) {
5795 if (uses_frags)
5796 napi_free_frags(napi);
5797 else
5798 dev_kfree_skb_any(skb);
5799 QETH_CARD_STAT_INC(card,
5800 rx_length_errors);
5801 }
5802 return -EMSGSIZE;
5803 }
5804 element++;
5805 offset = 0;
5806 }
5807 }
5808
5809
5810 if (!skb)
5811 goto next_packet;
5812
5813 *element_no = element - &buffer->element[0];
5814 *__offset = offset;
5815
5816 qeth_receive_skb(card, skb, hdr, uses_frags);
5817 return 0;
5818}
5819
5820static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5821 struct qeth_qdio_buffer *buf, bool *done)
5822{
5823 unsigned int work_done = 0;
5824
5825 while (budget) {
5826 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5827 &card->rx.e_offset)) {
5828 *done = true;
5829 break;
5830 }
5831
5832 work_done++;
5833 budget--;
5834 }
5835
5836 return work_done;
5837}
5838
5839static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5840{
5841 struct qeth_rx *ctx = &card->rx;
5842 unsigned int work_done = 0;
5843
5844 while (budget > 0) {
5845 struct qeth_qdio_buffer *buffer;
5846 unsigned int skbs_done = 0;
5847 bool done = false;
5848
5849
5850 if (!card->rx.b_count) {
5851 card->rx.qdio_err = 0;
5852 card->rx.b_count = qdio_inspect_queue(CARD_DDEV(card),
5853 0, true,
5854 &card->rx.b_index,
5855 &card->rx.qdio_err);
5856 if (card->rx.b_count <= 0) {
5857 card->rx.b_count = 0;
5858 break;
5859 }
5860 }
5861
5862
5863 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5864 if (!(card->rx.qdio_err &&
5865 qeth_check_qdio_errors(card, buffer->buffer,
5866 card->rx.qdio_err, "qinerr")))
5867 skbs_done = qeth_extract_skbs(card, budget, buffer,
5868 &done);
5869 else
5870 done = true;
5871
5872 work_done += skbs_done;
5873 budget -= skbs_done;
5874
5875 if (done) {
5876 QETH_CARD_STAT_INC(card, rx_bufs);
5877 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5878 buffer->pool_entry = NULL;
5879 card->rx.b_count--;
5880 ctx->bufs_refill++;
5881 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5882 ctx->bufs_refill);
5883
5884
5885 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5886 card->rx.buf_element = 0;
5887 card->rx.e_offset = 0;
5888 }
5889 }
5890
5891 return work_done;
5892}
5893
5894static void qeth_cq_poll(struct qeth_card *card)
5895{
5896 unsigned int work_done = 0;
5897
5898 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5899 unsigned int start, error;
5900 int completed;
5901
5902 completed = qdio_inspect_queue(CARD_DDEV(card), 1, true, &start,
5903 &error);
5904 if (completed <= 0)
5905 return;
5906
5907 qeth_qdio_cq_handler(card, error, 1, start, completed);
5908 work_done += completed;
5909 }
5910}
5911
5912int qeth_poll(struct napi_struct *napi, int budget)
5913{
5914 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5915 unsigned int work_done;
5916
5917 work_done = qeth_rx_poll(card, budget);
5918
5919 if (qeth_use_tx_irqs(card)) {
5920 struct qeth_qdio_out_q *queue;
5921 unsigned int i;
5922
5923 qeth_for_each_output_queue(card, queue, i) {
5924 if (!qeth_out_queue_is_empty(queue))
5925 napi_schedule(&queue->napi);
5926 }
5927 }
5928
5929 if (card->options.cq == QETH_CQ_ENABLED)
5930 qeth_cq_poll(card);
5931
5932 if (budget) {
5933 struct qeth_rx *ctx = &card->rx;
5934
5935
5936 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5937
5938
5939 if (work_done >= budget)
5940 return work_done;
5941 }
5942
5943 if (napi_complete_done(napi, work_done) &&
5944 qdio_start_irq(CARD_DDEV(card)))
5945 napi_schedule(napi);
5946
5947 return work_done;
5948}
5949EXPORT_SYMBOL_GPL(qeth_poll);
5950
5951static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5952 unsigned int bidx, unsigned int qdio_error,
5953 int budget)
5954{
5955 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5956 u8 sflags = buffer->buffer->element[15].sflags;
5957 struct qeth_card *card = queue->card;
5958 bool error = !!qdio_error;
5959
5960 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
5961 struct qaob *aob = buffer->aob;
5962 struct qeth_qaob_priv1 *priv;
5963 enum iucv_tx_notify notify;
5964
5965 if (!aob) {
5966 netdev_WARN_ONCE(card->dev,
5967 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5968 bidx, queue->queue_no);
5969 qeth_schedule_recovery(card);
5970 return;
5971 }
5972
5973 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5974
5975 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5976
5977 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
5978 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5979
5980
5981 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5982 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5983 QETH_CARD_TEXT(card, 2, "outofbuf");
5984 qeth_schedule_recovery(card);
5985 }
5986
5987 list_add(&buffer->list_entry, &queue->pending_bufs);
5988
5989 return;
5990 }
5991
5992
5993 notify = qeth_compute_cq_notification(aob->aorc, 0);
5994 qeth_notify_skbs(queue, buffer, notify);
5995 error = !!aob->aorc;
5996 memset(aob, 0, sizeof(*aob));
5997 } else if (card->options.cq == QETH_CQ_ENABLED) {
5998 qeth_notify_skbs(queue, buffer,
5999 qeth_compute_cq_notification(sflags, 0));
6000 }
6001
6002 qeth_clear_output_buffer(queue, buffer, error, budget);
6003}
6004
6005static int qeth_tx_poll(struct napi_struct *napi, int budget)
6006{
6007 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
6008 unsigned int queue_no = queue->queue_no;
6009 struct qeth_card *card = queue->card;
6010 struct net_device *dev = card->dev;
6011 unsigned int work_done = 0;
6012 struct netdev_queue *txq;
6013
6014 if (IS_IQD(card))
6015 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
6016 else
6017 txq = netdev_get_tx_queue(dev, queue_no);
6018
6019 while (1) {
6020 unsigned int start, error, i;
6021 unsigned int packets = 0;
6022 unsigned int bytes = 0;
6023 int completed;
6024
6025 qeth_tx_complete_pending_bufs(card, queue, false, budget);
6026
6027 if (qeth_out_queue_is_empty(queue)) {
6028 napi_complete(napi);
6029 return 0;
6030 }
6031
6032
6033 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6034 QETH_TXQ_STAT_INC(queue, completion_yield);
6035 if (napi_complete_done(napi, 0))
6036 napi_schedule(napi);
6037 return 0;
6038 }
6039
6040 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
6041 &start, &error);
6042 if (completed <= 0) {
6043
6044 if (napi_complete_done(napi, 0) &&
6045 !atomic_read(&queue->set_pci_flags_count))
6046 qeth_tx_arm_timer(queue, queue->rescan_usecs);
6047 return 0;
6048 }
6049
6050 for (i = start; i < start + completed; i++) {
6051 struct qeth_qdio_out_buffer *buffer;
6052 unsigned int bidx = QDIO_BUFNR(i);
6053
6054 buffer = queue->bufs[bidx];
6055 packets += buffer->frames;
6056 bytes += buffer->bytes;
6057
6058 qeth_handle_send_error(card, buffer, error);
6059 if (IS_IQD(card))
6060 qeth_iqd_tx_complete(queue, bidx, error, budget);
6061 else
6062 qeth_clear_output_buffer(queue, buffer, error,
6063 budget);
6064 }
6065
6066 atomic_sub(completed, &queue->used_buffers);
6067 work_done += completed;
6068 if (IS_IQD(card))
6069 netdev_tx_completed_queue(txq, packets, bytes);
6070 else
6071 qeth_check_outbound_queue(queue);
6072
6073
6074
6075
6076
6077
6078 if (netif_tx_queue_stopped(txq) &&
6079 !qeth_out_queue_is_full(queue))
6080 netif_tx_wake_queue(txq);
6081 }
6082}
6083
6084static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6085{
6086 if (!cmd->hdr.return_code)
6087 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6088 return cmd->hdr.return_code;
6089}
6090
6091static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6092 struct qeth_reply *reply,
6093 unsigned long data)
6094{
6095 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6096 struct qeth_ipa_caps *caps = reply->param;
6097
6098 if (qeth_setassparms_inspect_rc(cmd))
6099 return -EIO;
6100
6101 caps->supported = cmd->data.setassparms.data.caps.supported;
6102 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6103 return 0;
6104}
6105
6106int qeth_setassparms_cb(struct qeth_card *card,
6107 struct qeth_reply *reply, unsigned long data)
6108{
6109 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6110
6111 QETH_CARD_TEXT(card, 4, "defadpcb");
6112
6113 if (cmd->hdr.return_code)
6114 return -EIO;
6115
6116 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6117 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6118 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6119 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6120 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6121 return 0;
6122}
6123EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6124
6125struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6126 enum qeth_ipa_funcs ipa_func,
6127 u16 cmd_code,
6128 unsigned int data_length,
6129 enum qeth_prot_versions prot)
6130{
6131 struct qeth_ipacmd_setassparms *setassparms;
6132 struct qeth_ipacmd_setassparms_hdr *hdr;
6133 struct qeth_cmd_buffer *iob;
6134
6135 QETH_CARD_TEXT(card, 4, "getasscm");
6136 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6137 data_length +
6138 offsetof(struct qeth_ipacmd_setassparms,
6139 data));
6140 if (!iob)
6141 return NULL;
6142
6143 setassparms = &__ipa_cmd(iob)->data.setassparms;
6144 setassparms->assist_no = ipa_func;
6145
6146 hdr = &setassparms->hdr;
6147 hdr->length = sizeof(*hdr) + data_length;
6148 hdr->command_code = cmd_code;
6149 return iob;
6150}
6151EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6152
6153int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6154 enum qeth_ipa_funcs ipa_func,
6155 u16 cmd_code, u32 *data,
6156 enum qeth_prot_versions prot)
6157{
6158 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6159 struct qeth_cmd_buffer *iob;
6160
6161 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6162 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6163 if (!iob)
6164 return -ENOMEM;
6165
6166 if (data)
6167 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6168 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6169}
6170EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6171
6172static void qeth_unregister_dbf_views(void)
6173{
6174 int x;
6175
6176 for (x = 0; x < QETH_DBF_INFOS; x++) {
6177 debug_unregister(qeth_dbf[x].id);
6178 qeth_dbf[x].id = NULL;
6179 }
6180}
6181
6182void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6183{
6184 char dbf_txt_buf[32];
6185 va_list args;
6186
6187 if (!debug_level_enabled(id, level))
6188 return;
6189 va_start(args, fmt);
6190 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6191 va_end(args);
6192 debug_text_event(id, level, dbf_txt_buf);
6193}
6194EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6195
6196static int qeth_register_dbf_views(void)
6197{
6198 int ret;
6199 int x;
6200
6201 for (x = 0; x < QETH_DBF_INFOS; x++) {
6202
6203 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6204 qeth_dbf[x].pages,
6205 qeth_dbf[x].areas,
6206 qeth_dbf[x].len);
6207 if (qeth_dbf[x].id == NULL) {
6208 qeth_unregister_dbf_views();
6209 return -ENOMEM;
6210 }
6211
6212
6213 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6214 if (ret) {
6215 qeth_unregister_dbf_views();
6216 return ret;
6217 }
6218
6219
6220 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6221 }
6222
6223 return 0;
6224}
6225
6226static DEFINE_MUTEX(qeth_mod_mutex);
6227
6228int qeth_setup_discipline(struct qeth_card *card,
6229 enum qeth_discipline_id discipline)
6230{
6231 int rc;
6232
6233 mutex_lock(&qeth_mod_mutex);
6234 switch (discipline) {
6235 case QETH_DISCIPLINE_LAYER3:
6236 card->discipline = try_then_request_module(
6237 symbol_get(qeth_l3_discipline), "qeth_l3");
6238 break;
6239 case QETH_DISCIPLINE_LAYER2:
6240 card->discipline = try_then_request_module(
6241 symbol_get(qeth_l2_discipline), "qeth_l2");
6242 break;
6243 default:
6244 break;
6245 }
6246 mutex_unlock(&qeth_mod_mutex);
6247
6248 if (!card->discipline) {
6249 dev_err(&card->gdev->dev, "There is no kernel module to "
6250 "support discipline %d\n", discipline);
6251 return -EINVAL;
6252 }
6253
6254 rc = card->discipline->setup(card->gdev);
6255 if (rc) {
6256 if (discipline == QETH_DISCIPLINE_LAYER2)
6257 symbol_put(qeth_l2_discipline);
6258 else
6259 symbol_put(qeth_l3_discipline);
6260 card->discipline = NULL;
6261
6262 return rc;
6263 }
6264
6265 card->options.layer = discipline;
6266 return 0;
6267}
6268
6269void qeth_remove_discipline(struct qeth_card *card)
6270{
6271 card->discipline->remove(card->gdev);
6272
6273 if (IS_LAYER2(card))
6274 symbol_put(qeth_l2_discipline);
6275 else
6276 symbol_put(qeth_l3_discipline);
6277 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6278 card->discipline = NULL;
6279}
6280
6281static const struct device_type qeth_generic_devtype = {
6282 .name = "qeth_generic",
6283};
6284
6285#define DBF_NAME_LEN 20
6286
6287struct qeth_dbf_entry {
6288 char dbf_name[DBF_NAME_LEN];
6289 debug_info_t *dbf_info;
6290 struct list_head dbf_list;
6291};
6292
6293static LIST_HEAD(qeth_dbf_list);
6294static DEFINE_MUTEX(qeth_dbf_list_mutex);
6295
6296static debug_info_t *qeth_get_dbf_entry(char *name)
6297{
6298 struct qeth_dbf_entry *entry;
6299 debug_info_t *rc = NULL;
6300
6301 mutex_lock(&qeth_dbf_list_mutex);
6302 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6303 if (strcmp(entry->dbf_name, name) == 0) {
6304 rc = entry->dbf_info;
6305 break;
6306 }
6307 }
6308 mutex_unlock(&qeth_dbf_list_mutex);
6309 return rc;
6310}
6311
6312static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6313{
6314 struct qeth_dbf_entry *new_entry;
6315
6316 card->debug = debug_register(name, 2, 1, 8);
6317 if (!card->debug) {
6318 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6319 goto err;
6320 }
6321 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6322 goto err_dbg;
6323 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6324 if (!new_entry)
6325 goto err_dbg;
6326 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6327 new_entry->dbf_info = card->debug;
6328 mutex_lock(&qeth_dbf_list_mutex);
6329 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6330 mutex_unlock(&qeth_dbf_list_mutex);
6331
6332 return 0;
6333
6334err_dbg:
6335 debug_unregister(card->debug);
6336err:
6337 return -ENOMEM;
6338}
6339
6340static void qeth_clear_dbf_list(void)
6341{
6342 struct qeth_dbf_entry *entry, *tmp;
6343
6344 mutex_lock(&qeth_dbf_list_mutex);
6345 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6346 list_del(&entry->dbf_list);
6347 debug_unregister(entry->dbf_info);
6348 kfree(entry);
6349 }
6350 mutex_unlock(&qeth_dbf_list_mutex);
6351}
6352
6353static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6354{
6355 struct net_device *dev;
6356 struct qeth_priv *priv;
6357
6358 switch (card->info.type) {
6359 case QETH_CARD_TYPE_IQD:
6360 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6361 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6362 break;
6363 case QETH_CARD_TYPE_OSM:
6364 dev = alloc_etherdev(sizeof(*priv));
6365 break;
6366 default:
6367 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6368 }
6369
6370 if (!dev)
6371 return NULL;
6372
6373 priv = netdev_priv(dev);
6374 priv->rx_copybreak = QETH_RX_COPYBREAK;
6375 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6376
6377 dev->ml_priv = card;
6378 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6379 dev->min_mtu = 576;
6380
6381 dev->max_mtu = 0;
6382 dev->mtu = 0;
6383 SET_NETDEV_DEV(dev, &card->gdev->dev);
6384 netif_carrier_off(dev);
6385
6386 dev->ethtool_ops = &qeth_ethtool_ops;
6387 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6388 dev->hw_features |= NETIF_F_SG;
6389 dev->vlan_features |= NETIF_F_SG;
6390 if (IS_IQD(card))
6391 dev->features |= NETIF_F_SG;
6392
6393 return dev;
6394}
6395
6396struct net_device *qeth_clone_netdev(struct net_device *orig)
6397{
6398 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6399
6400 if (!clone)
6401 return NULL;
6402
6403 clone->dev_port = orig->dev_port;
6404 return clone;
6405}
6406
6407static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6408{
6409 struct qeth_card *card;
6410 struct device *dev;
6411 int rc;
6412 enum qeth_discipline_id enforced_disc;
6413 char dbf_name[DBF_NAME_LEN];
6414
6415 QETH_DBF_TEXT(SETUP, 2, "probedev");
6416
6417 dev = &gdev->dev;
6418 if (!get_device(dev))
6419 return -ENODEV;
6420
6421 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6422
6423 card = qeth_alloc_card(gdev);
6424 if (!card) {
6425 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6426 rc = -ENOMEM;
6427 goto err_dev;
6428 }
6429
6430 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6431 dev_name(&gdev->dev));
6432 card->debug = qeth_get_dbf_entry(dbf_name);
6433 if (!card->debug) {
6434 rc = qeth_add_dbf_entry(card, dbf_name);
6435 if (rc)
6436 goto err_card;
6437 }
6438
6439 qeth_setup_card(card);
6440 card->dev = qeth_alloc_netdev(card);
6441 if (!card->dev) {
6442 rc = -ENOMEM;
6443 goto err_card;
6444 }
6445
6446 qeth_determine_capabilities(card);
6447 qeth_set_blkt_defaults(card);
6448
6449 card->qdio.no_out_queues = card->dev->num_tx_queues;
6450 rc = qeth_update_from_chp_desc(card);
6451 if (rc)
6452 goto err_chp_desc;
6453
6454 gdev->dev.groups = qeth_dev_groups;
6455
6456 enforced_disc = qeth_enforce_discipline(card);
6457 switch (enforced_disc) {
6458 case QETH_DISCIPLINE_UNDETERMINED:
6459 gdev->dev.type = &qeth_generic_devtype;
6460 break;
6461 default:
6462 card->info.layer_enforced = true;
6463
6464 rc = qeth_setup_discipline(card, enforced_disc);
6465 if (rc)
6466 goto err_setup_disc;
6467
6468 break;
6469 }
6470
6471 return 0;
6472
6473err_setup_disc:
6474err_chp_desc:
6475 free_netdev(card->dev);
6476err_card:
6477 qeth_core_free_card(card);
6478err_dev:
6479 put_device(dev);
6480 return rc;
6481}
6482
6483static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6484{
6485 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6486
6487 QETH_CARD_TEXT(card, 2, "removedv");
6488
6489 mutex_lock(&card->discipline_mutex);
6490 if (card->discipline)
6491 qeth_remove_discipline(card);
6492 mutex_unlock(&card->discipline_mutex);
6493
6494 qeth_free_qdio_queues(card);
6495
6496 free_netdev(card->dev);
6497 qeth_core_free_card(card);
6498 put_device(&gdev->dev);
6499}
6500
6501static int qeth_core_set_online(struct ccwgroup_device *gdev)
6502{
6503 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6504 int rc = 0;
6505 enum qeth_discipline_id def_discipline;
6506
6507 mutex_lock(&card->discipline_mutex);
6508 if (!card->discipline) {
6509 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6510 QETH_DISCIPLINE_LAYER2;
6511 rc = qeth_setup_discipline(card, def_discipline);
6512 if (rc)
6513 goto err;
6514 }
6515
6516 rc = qeth_set_online(card, card->discipline);
6517
6518err:
6519 mutex_unlock(&card->discipline_mutex);
6520 return rc;
6521}
6522
6523static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6524{
6525 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6526 int rc;
6527
6528 mutex_lock(&card->discipline_mutex);
6529 rc = qeth_set_offline(card, card->discipline, false);
6530 mutex_unlock(&card->discipline_mutex);
6531
6532 return rc;
6533}
6534
6535static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6536{
6537 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6538
6539 qeth_set_allowed_threads(card, 0, 1);
6540 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6541 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6542 qeth_qdio_clear_card(card, 0);
6543 qeth_drain_output_queues(card);
6544 qdio_free(CARD_DDEV(card));
6545}
6546
6547static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6548 size_t count)
6549{
6550 int err;
6551
6552 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6553 buf);
6554
6555 return err ? err : count;
6556}
6557static DRIVER_ATTR_WO(group);
6558
6559static struct attribute *qeth_drv_attrs[] = {
6560 &driver_attr_group.attr,
6561 NULL,
6562};
6563static struct attribute_group qeth_drv_attr_group = {
6564 .attrs = qeth_drv_attrs,
6565};
6566static const struct attribute_group *qeth_drv_attr_groups[] = {
6567 &qeth_drv_attr_group,
6568 NULL,
6569};
6570
6571static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6572 .driver = {
6573 .groups = qeth_drv_attr_groups,
6574 .owner = THIS_MODULE,
6575 .name = "qeth",
6576 },
6577 .ccw_driver = &qeth_ccw_driver,
6578 .setup = qeth_core_probe_device,
6579 .remove = qeth_core_remove_device,
6580 .set_online = qeth_core_set_online,
6581 .set_offline = qeth_core_set_offline,
6582 .shutdown = qeth_core_shutdown,
6583};
6584
6585int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
6586{
6587 struct qeth_card *card = dev->ml_priv;
6588 int rc = 0;
6589
6590 switch (cmd) {
6591 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6592 rc = qeth_snmp_command(card, data);
6593 break;
6594 case SIOC_QETH_GET_CARD_TYPE:
6595 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6596 !IS_VM_NIC(card))
6597 return 1;
6598 return 0;
6599 case SIOC_QETH_QUERY_OAT:
6600 rc = qeth_query_oat_command(card, data);
6601 break;
6602 default:
6603 if (card->discipline->do_ioctl)
6604 rc = card->discipline->do_ioctl(dev, rq, data, cmd);
6605 else
6606 rc = -EOPNOTSUPP;
6607 }
6608 if (rc)
6609 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6610 return rc;
6611}
6612EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6613
6614int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6615{
6616 struct qeth_card *card = dev->ml_priv;
6617 struct mii_ioctl_data *mii_data;
6618 int rc = 0;
6619
6620 switch (cmd) {
6621 case SIOCGMIIPHY:
6622 mii_data = if_mii(rq);
6623 mii_data->phy_id = 0;
6624 break;
6625 case SIOCGMIIREG:
6626 mii_data = if_mii(rq);
6627 if (mii_data->phy_id != 0)
6628 rc = -EINVAL;
6629 else
6630 mii_data->val_out = qeth_mdio_read(dev,
6631 mii_data->phy_id, mii_data->reg_num);
6632 break;
6633 default:
6634 return -EOPNOTSUPP;
6635 }
6636 if (rc)
6637 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6638 return rc;
6639}
6640EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6641
6642static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6643 unsigned long data)
6644{
6645 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6646 u32 *features = reply->param;
6647
6648 if (qeth_setassparms_inspect_rc(cmd))
6649 return -EIO;
6650
6651 *features = cmd->data.setassparms.data.flags_32bit;
6652 return 0;
6653}
6654
6655static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6656 enum qeth_prot_versions prot)
6657{
6658 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6659 NULL, prot);
6660}
6661
6662static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6663 enum qeth_prot_versions prot, u8 *lp2lp)
6664{
6665 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6666 struct qeth_cmd_buffer *iob;
6667 struct qeth_ipa_caps caps;
6668 u32 features;
6669 int rc;
6670
6671
6672 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6673 cstype == IPA_OUTBOUND_CHECKSUM)
6674 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6675
6676 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6677 prot);
6678 if (!iob)
6679 return -ENOMEM;
6680
6681 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6682 if (rc)
6683 return rc;
6684
6685 if ((required_features & features) != required_features) {
6686 qeth_set_csum_off(card, cstype, prot);
6687 return -EOPNOTSUPP;
6688 }
6689
6690 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6691 SETASS_DATA_SIZEOF(flags_32bit),
6692 prot);
6693 if (!iob) {
6694 qeth_set_csum_off(card, cstype, prot);
6695 return -ENOMEM;
6696 }
6697
6698 if (features & QETH_IPA_CHECKSUM_LP2LP)
6699 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6700 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6701 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6702 if (rc) {
6703 qeth_set_csum_off(card, cstype, prot);
6704 return rc;
6705 }
6706
6707 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6708 !qeth_ipa_caps_enabled(&caps, required_features)) {
6709 qeth_set_csum_off(card, cstype, prot);
6710 return -EOPNOTSUPP;
6711 }
6712
6713 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6714 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6715
6716 if (lp2lp)
6717 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6718
6719 return 0;
6720}
6721
6722static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6723 enum qeth_prot_versions prot, u8 *lp2lp)
6724{
6725 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6726 qeth_set_csum_off(card, cstype, prot);
6727}
6728
6729static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6730 unsigned long data)
6731{
6732 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6733 struct qeth_tso_start_data *tso_data = reply->param;
6734
6735 if (qeth_setassparms_inspect_rc(cmd))
6736 return -EIO;
6737
6738 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6739 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6740 return 0;
6741}
6742
6743static int qeth_set_tso_off(struct qeth_card *card,
6744 enum qeth_prot_versions prot)
6745{
6746 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6747 IPA_CMD_ASS_STOP, NULL, prot);
6748}
6749
6750static int qeth_set_tso_on(struct qeth_card *card,
6751 enum qeth_prot_versions prot)
6752{
6753 struct qeth_tso_start_data tso_data;
6754 struct qeth_cmd_buffer *iob;
6755 struct qeth_ipa_caps caps;
6756 int rc;
6757
6758 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6759 IPA_CMD_ASS_START, 0, prot);
6760 if (!iob)
6761 return -ENOMEM;
6762
6763 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6764 if (rc)
6765 return rc;
6766
6767 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6768 qeth_set_tso_off(card, prot);
6769 return -EOPNOTSUPP;
6770 }
6771
6772 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6773 IPA_CMD_ASS_ENABLE,
6774 SETASS_DATA_SIZEOF(caps), prot);
6775 if (!iob) {
6776 qeth_set_tso_off(card, prot);
6777 return -ENOMEM;
6778 }
6779
6780
6781 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6782 QETH_IPA_LARGE_SEND_TCP;
6783 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6784 if (rc) {
6785 qeth_set_tso_off(card, prot);
6786 return rc;
6787 }
6788
6789 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6790 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6791 qeth_set_tso_off(card, prot);
6792 return -EOPNOTSUPP;
6793 }
6794
6795 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6796 tso_data.mss);
6797 return 0;
6798}
6799
6800static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6801 enum qeth_prot_versions prot)
6802{
6803 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6804}
6805
6806static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6807{
6808 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6809 int rc_ipv6;
6810
6811 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6812 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6813 QETH_PROT_IPV4, NULL);
6814 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6815
6816 return rc_ipv4;
6817
6818 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6819 QETH_PROT_IPV6, NULL);
6820
6821 if (on)
6822
6823 return (rc_ipv6) ? rc_ipv4 : 0;
6824
6825
6826 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6827}
6828
6829
6830
6831
6832
6833void qeth_enable_hw_features(struct net_device *dev)
6834{
6835 struct qeth_card *card = dev->ml_priv;
6836 netdev_features_t features;
6837
6838 features = dev->features;
6839
6840
6841
6842 dev->features &= ~dev->hw_features;
6843
6844 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6845 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6846 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6847 }
6848 netdev_update_features(dev);
6849 if (features != dev->features)
6850 dev_warn(&card->gdev->dev,
6851 "Device recovery failed to restore all offload features\n");
6852}
6853EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6854
6855static void qeth_check_restricted_features(struct qeth_card *card,
6856 netdev_features_t changed,
6857 netdev_features_t actual)
6858{
6859 netdev_features_t ipv6_features = NETIF_F_TSO6;
6860 netdev_features_t ipv4_features = NETIF_F_TSO;
6861
6862 if (!card->info.has_lp2lp_cso_v6)
6863 ipv6_features |= NETIF_F_IPV6_CSUM;
6864 if (!card->info.has_lp2lp_cso_v4)
6865 ipv4_features |= NETIF_F_IP_CSUM;
6866
6867 if ((changed & ipv6_features) && !(actual & ipv6_features))
6868 qeth_flush_local_addrs6(card);
6869 if ((changed & ipv4_features) && !(actual & ipv4_features))
6870 qeth_flush_local_addrs4(card);
6871}
6872
6873int qeth_set_features(struct net_device *dev, netdev_features_t features)
6874{
6875 struct qeth_card *card = dev->ml_priv;
6876 netdev_features_t changed = dev->features ^ features;
6877 int rc = 0;
6878
6879 QETH_CARD_TEXT(card, 2, "setfeat");
6880 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6881
6882 if ((changed & NETIF_F_IP_CSUM)) {
6883 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6884 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6885 &card->info.has_lp2lp_cso_v4);
6886 if (rc)
6887 changed ^= NETIF_F_IP_CSUM;
6888 }
6889 if (changed & NETIF_F_IPV6_CSUM) {
6890 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6891 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6892 &card->info.has_lp2lp_cso_v6);
6893 if (rc)
6894 changed ^= NETIF_F_IPV6_CSUM;
6895 }
6896 if (changed & NETIF_F_RXCSUM) {
6897 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6898 if (rc)
6899 changed ^= NETIF_F_RXCSUM;
6900 }
6901 if (changed & NETIF_F_TSO) {
6902 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6903 QETH_PROT_IPV4);
6904 if (rc)
6905 changed ^= NETIF_F_TSO;
6906 }
6907 if (changed & NETIF_F_TSO6) {
6908 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6909 QETH_PROT_IPV6);
6910 if (rc)
6911 changed ^= NETIF_F_TSO6;
6912 }
6913
6914 qeth_check_restricted_features(card, dev->features ^ features,
6915 dev->features ^ changed);
6916
6917
6918 if ((dev->features ^ features) == changed)
6919 return 0;
6920
6921 dev->features ^= changed;
6922 return -EIO;
6923}
6924EXPORT_SYMBOL_GPL(qeth_set_features);
6925
6926netdev_features_t qeth_fix_features(struct net_device *dev,
6927 netdev_features_t features)
6928{
6929 struct qeth_card *card = dev->ml_priv;
6930
6931 QETH_CARD_TEXT(card, 2, "fixfeat");
6932 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6933 features &= ~NETIF_F_IP_CSUM;
6934 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6935 features &= ~NETIF_F_IPV6_CSUM;
6936 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6937 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6938 features &= ~NETIF_F_RXCSUM;
6939 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6940 features &= ~NETIF_F_TSO;
6941 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6942 features &= ~NETIF_F_TSO6;
6943
6944 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6945 return features;
6946}
6947EXPORT_SYMBOL_GPL(qeth_fix_features);
6948
6949netdev_features_t qeth_features_check(struct sk_buff *skb,
6950 struct net_device *dev,
6951 netdev_features_t features)
6952{
6953 struct qeth_card *card = dev->ml_priv;
6954
6955
6956 if (skb->ip_summed == CHECKSUM_PARTIAL &&
6957 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
6958 netdev_features_t restricted = 0;
6959
6960 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6961 restricted |= NETIF_F_ALL_TSO;
6962
6963 switch (vlan_get_protocol(skb)) {
6964 case htons(ETH_P_IP):
6965 if (!card->info.has_lp2lp_cso_v4)
6966 restricted |= NETIF_F_IP_CSUM;
6967
6968 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6969 features &= ~restricted;
6970 break;
6971 case htons(ETH_P_IPV6):
6972 if (!card->info.has_lp2lp_cso_v6)
6973 restricted |= NETIF_F_IPV6_CSUM;
6974
6975 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6976 features &= ~restricted;
6977 break;
6978 default:
6979 break;
6980 }
6981 }
6982
6983
6984
6985
6986
6987
6988
6989
6990 if (netif_needs_gso(skb, features)) {
6991
6992 unsigned int doffset = skb->data - skb_mac_header(skb);
6993 unsigned int hsize = skb_shinfo(skb)->gso_size;
6994 unsigned int hroom = skb_headroom(skb);
6995
6996
6997 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6998 features &= ~NETIF_F_SG;
6999 }
7000
7001 return vlan_features_check(skb, features);
7002}
7003EXPORT_SYMBOL_GPL(qeth_features_check);
7004
7005void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
7006{
7007 struct qeth_card *card = dev->ml_priv;
7008 struct qeth_qdio_out_q *queue;
7009 unsigned int i;
7010
7011 QETH_CARD_TEXT(card, 5, "getstat");
7012
7013 stats->rx_packets = card->stats.rx_packets;
7014 stats->rx_bytes = card->stats.rx_bytes;
7015 stats->rx_errors = card->stats.rx_length_errors +
7016 card->stats.rx_frame_errors +
7017 card->stats.rx_fifo_errors;
7018 stats->rx_dropped = card->stats.rx_dropped_nomem +
7019 card->stats.rx_dropped_notsupp +
7020 card->stats.rx_dropped_runt;
7021 stats->multicast = card->stats.rx_multicast;
7022 stats->rx_length_errors = card->stats.rx_length_errors;
7023 stats->rx_frame_errors = card->stats.rx_frame_errors;
7024 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
7025
7026 for (i = 0; i < card->qdio.no_out_queues; i++) {
7027 queue = card->qdio.out_qs[i];
7028
7029 stats->tx_packets += queue->stats.tx_packets;
7030 stats->tx_bytes += queue->stats.tx_bytes;
7031 stats->tx_errors += queue->stats.tx_errors;
7032 stats->tx_dropped += queue->stats.tx_dropped;
7033 }
7034}
7035EXPORT_SYMBOL_GPL(qeth_get_stats64);
7036
7037#define TC_IQD_UCAST 0
7038static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7039 unsigned int ucast_txqs)
7040{
7041 unsigned int prio;
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052 netdev_set_num_tc(dev, 1);
7053 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7054 QETH_IQD_MIN_UCAST_TXQ);
7055
7056
7057 for (prio = 0; prio <= TC_BITMASK; prio++)
7058 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7059}
7060
7061int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7062{
7063 struct net_device *dev = card->dev;
7064 int rc;
7065
7066
7067 if (IS_IQD(card))
7068 qeth_iqd_set_prio_tc_map(dev, count - 1);
7069
7070 rc = netif_set_real_num_tx_queues(dev, count);
7071
7072 if (rc && IS_IQD(card))
7073 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7074
7075 return rc;
7076}
7077EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
7078
7079u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7080 u8 cast_type, struct net_device *sb_dev)
7081{
7082 u16 txq;
7083
7084 if (cast_type != RTN_UNICAST)
7085 return QETH_IQD_MCAST_TXQ;
7086 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7087 return QETH_IQD_MIN_UCAST_TXQ;
7088
7089 txq = netdev_pick_tx(dev, skb, sb_dev);
7090 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7091}
7092EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7093
7094int qeth_open(struct net_device *dev)
7095{
7096 struct qeth_card *card = dev->ml_priv;
7097 struct qeth_qdio_out_q *queue;
7098 unsigned int i;
7099
7100 QETH_CARD_TEXT(card, 4, "qethopen");
7101
7102 card->data.state = CH_STATE_UP;
7103 netif_tx_start_all_queues(dev);
7104
7105 local_bh_disable();
7106 qeth_for_each_output_queue(card, queue, i) {
7107 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
7108 QETH_NAPI_WEIGHT);
7109 napi_enable(&queue->napi);
7110 napi_schedule(&queue->napi);
7111 }
7112
7113 napi_enable(&card->napi);
7114 napi_schedule(&card->napi);
7115
7116 local_bh_enable();
7117
7118 return 0;
7119}
7120EXPORT_SYMBOL_GPL(qeth_open);
7121
7122int qeth_stop(struct net_device *dev)
7123{
7124 struct qeth_card *card = dev->ml_priv;
7125 struct qeth_qdio_out_q *queue;
7126 unsigned int i;
7127
7128 QETH_CARD_TEXT(card, 4, "qethstop");
7129
7130 napi_disable(&card->napi);
7131 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7132 qdio_stop_irq(CARD_DDEV(card));
7133
7134
7135 qeth_for_each_output_queue(card, queue, i)
7136 napi_disable(&queue->napi);
7137
7138
7139 netif_tx_disable(dev);
7140
7141 qeth_for_each_output_queue(card, queue, i) {
7142 del_timer_sync(&queue->timer);
7143
7144 netif_napi_del(&queue->napi);
7145 }
7146
7147 return 0;
7148}
7149EXPORT_SYMBOL_GPL(qeth_stop);
7150
7151static int __init qeth_core_init(void)
7152{
7153 int rc;
7154
7155 pr_info("loading core functions\n");
7156
7157 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7158
7159 rc = qeth_register_dbf_views();
7160 if (rc)
7161 goto dbf_err;
7162 qeth_core_root_dev = root_device_register("qeth");
7163 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7164 if (rc)
7165 goto register_err;
7166 qeth_core_header_cache =
7167 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7168 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7169 0, NULL);
7170 if (!qeth_core_header_cache) {
7171 rc = -ENOMEM;
7172 goto slab_err;
7173 }
7174 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7175 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7176 if (!qeth_qdio_outbuf_cache) {
7177 rc = -ENOMEM;
7178 goto cqslab_err;
7179 }
7180 rc = ccw_driver_register(&qeth_ccw_driver);
7181 if (rc)
7182 goto ccw_err;
7183 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7184 if (rc)
7185 goto ccwgroup_err;
7186
7187 return 0;
7188
7189ccwgroup_err:
7190 ccw_driver_unregister(&qeth_ccw_driver);
7191ccw_err:
7192 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7193cqslab_err:
7194 kmem_cache_destroy(qeth_core_header_cache);
7195slab_err:
7196 root_device_unregister(qeth_core_root_dev);
7197register_err:
7198 qeth_unregister_dbf_views();
7199dbf_err:
7200 debugfs_remove_recursive(qeth_debugfs_root);
7201 pr_err("Initializing the qeth device driver failed\n");
7202 return rc;
7203}
7204
7205static void __exit qeth_core_exit(void)
7206{
7207 qeth_clear_dbf_list();
7208 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7209 ccw_driver_unregister(&qeth_ccw_driver);
7210 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7211 kmem_cache_destroy(qeth_core_header_cache);
7212 root_device_unregister(qeth_core_root_dev);
7213 qeth_unregister_dbf_views();
7214 debugfs_remove_recursive(qeth_debugfs_root);
7215 pr_info("core functions removed\n");
7216}
7217
7218module_init(qeth_core_init);
7219module_exit(qeth_core_exit);
7220MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7221MODULE_DESCRIPTION("qeth core functions");
7222MODULE_LICENSE("GPL");
7223
