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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;
62static struct kmem_cache *qeth_qaob_cache;
63
64static struct device *qeth_core_root_dev;
65static struct dentry *qeth_debugfs_root;
66static struct lock_class_key qdio_out_skb_queue_key;
67
68static void qeth_issue_next_read_cb(struct qeth_card *card,
69 struct qeth_cmd_buffer *iob,
70 unsigned int data_length);
71static int qeth_qdio_establish(struct qeth_card *);
72static void qeth_free_qdio_queues(struct qeth_card *card);
73
74static const char *qeth_get_cardname(struct qeth_card *card)
75{
76 if (IS_VM_NIC(card)) {
77 switch (card->info.type) {
78 case QETH_CARD_TYPE_OSD:
79 return " Virtual NIC QDIO";
80 case QETH_CARD_TYPE_IQD:
81 return " Virtual NIC Hiper";
82 case QETH_CARD_TYPE_OSM:
83 return " Virtual NIC QDIO - OSM";
84 case QETH_CARD_TYPE_OSX:
85 return " Virtual NIC QDIO - OSX";
86 default:
87 return " unknown";
88 }
89 } else {
90 switch (card->info.type) {
91 case QETH_CARD_TYPE_OSD:
92 return " OSD Express";
93 case QETH_CARD_TYPE_IQD:
94 return " HiperSockets";
95 case QETH_CARD_TYPE_OSM:
96 return " OSM QDIO";
97 case QETH_CARD_TYPE_OSX:
98 return " OSX QDIO";
99 default:
100 return " unknown";
101 }
102 }
103 return " n/a";
104}
105
106
107const char *qeth_get_cardname_short(struct qeth_card *card)
108{
109 if (IS_VM_NIC(card)) {
110 switch (card->info.type) {
111 case QETH_CARD_TYPE_OSD:
112 return "Virt.NIC QDIO";
113 case QETH_CARD_TYPE_IQD:
114 return "Virt.NIC Hiper";
115 case QETH_CARD_TYPE_OSM:
116 return "Virt.NIC OSM";
117 case QETH_CARD_TYPE_OSX:
118 return "Virt.NIC OSX";
119 default:
120 return "unknown";
121 }
122 } else {
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 switch (card->info.link_type) {
126 case QETH_LINK_TYPE_FAST_ETH:
127 return "OSD_100";
128 case QETH_LINK_TYPE_HSTR:
129 return "HSTR";
130 case QETH_LINK_TYPE_GBIT_ETH:
131 return "OSD_1000";
132 case QETH_LINK_TYPE_10GBIT_ETH:
133 return "OSD_10GIG";
134 case QETH_LINK_TYPE_25GBIT_ETH:
135 return "OSD_25GIG";
136 case QETH_LINK_TYPE_LANE_ETH100:
137 return "OSD_FE_LANE";
138 case QETH_LINK_TYPE_LANE_TR:
139 return "OSD_TR_LANE";
140 case QETH_LINK_TYPE_LANE_ETH1000:
141 return "OSD_GbE_LANE";
142 case QETH_LINK_TYPE_LANE:
143 return "OSD_ATM_LANE";
144 default:
145 return "OSD_Express";
146 }
147 case QETH_CARD_TYPE_IQD:
148 return "HiperSockets";
149 case QETH_CARD_TYPE_OSM:
150 return "OSM_1000";
151 case QETH_CARD_TYPE_OSX:
152 return "OSX_10GIG";
153 default:
154 return "unknown";
155 }
156 }
157 return "n/a";
158}
159
160void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
161 int clear_start_mask)
162{
163 unsigned long flags;
164
165 spin_lock_irqsave(&card->thread_mask_lock, flags);
166 card->thread_allowed_mask = threads;
167 if (clear_start_mask)
168 card->thread_start_mask &= threads;
169 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
170 wake_up(&card->wait_q);
171}
172EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
173
174int qeth_threads_running(struct qeth_card *card, unsigned long threads)
175{
176 unsigned long flags;
177 int rc = 0;
178
179 spin_lock_irqsave(&card->thread_mask_lock, flags);
180 rc = (card->thread_running_mask & threads);
181 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
182 return rc;
183}
184EXPORT_SYMBOL_GPL(qeth_threads_running);
185
186static void qeth_clear_working_pool_list(struct qeth_card *card)
187{
188 struct qeth_buffer_pool_entry *pool_entry, *tmp;
189 struct qeth_qdio_q *queue = card->qdio.in_q;
190 unsigned int i;
191
192 QETH_CARD_TEXT(card, 5, "clwrklst");
193 list_for_each_entry_safe(pool_entry, tmp,
194 &card->qdio.in_buf_pool.entry_list, list)
195 list_del(&pool_entry->list);
196
197 for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
198 queue->bufs[i].pool_entry = NULL;
199}
200
201static void qeth_free_pool_entry(struct qeth_buffer_pool_entry *entry)
202{
203 unsigned int i;
204
205 for (i = 0; i < ARRAY_SIZE(entry->elements); i++) {
206 if (entry->elements[i])
207 __free_page(entry->elements[i]);
208 }
209
210 kfree(entry);
211}
212
213static void qeth_free_buffer_pool(struct qeth_card *card)
214{
215 struct qeth_buffer_pool_entry *entry, *tmp;
216
217 list_for_each_entry_safe(entry, tmp, &card->qdio.init_pool.entry_list,
218 init_list) {
219 list_del(&entry->init_list);
220 qeth_free_pool_entry(entry);
221 }
222}
223
224static struct qeth_buffer_pool_entry *qeth_alloc_pool_entry(unsigned int pages)
225{
226 struct qeth_buffer_pool_entry *entry;
227 unsigned int i;
228
229 entry = kzalloc(sizeof(*entry), GFP_KERNEL);
230 if (!entry)
231 return NULL;
232
233 for (i = 0; i < pages; i++) {
234 entry->elements[i] = __dev_alloc_page(GFP_KERNEL);
235
236 if (!entry->elements[i]) {
237 qeth_free_pool_entry(entry);
238 return NULL;
239 }
240 }
241
242 return entry;
243}
244
245static int qeth_alloc_buffer_pool(struct qeth_card *card)
246{
247 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
248 unsigned int i;
249
250 QETH_CARD_TEXT(card, 5, "alocpool");
251 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
252 struct qeth_buffer_pool_entry *entry;
253
254 entry = qeth_alloc_pool_entry(buf_elements);
255 if (!entry) {
256 qeth_free_buffer_pool(card);
257 return -ENOMEM;
258 }
259
260 list_add(&entry->init_list, &card->qdio.init_pool.entry_list);
261 }
262 return 0;
263}
264
265int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
266{
267 unsigned int buf_elements = QETH_MAX_BUFFER_ELEMENTS(card);
268 struct qeth_qdio_buffer_pool *pool = &card->qdio.init_pool;
269 struct qeth_buffer_pool_entry *entry, *tmp;
270 int delta = count - pool->buf_count;
271 LIST_HEAD(entries);
272
273 QETH_CARD_TEXT(card, 2, "realcbp");
274
275
276 if (list_empty(&pool->entry_list))
277 goto out;
278
279
280 while (delta < 0) {
281 entry = list_first_entry(&pool->entry_list,
282 struct qeth_buffer_pool_entry,
283 init_list);
284 list_del(&entry->init_list);
285 qeth_free_pool_entry(entry);
286
287 delta++;
288 }
289
290
291 while (delta > 0) {
292 entry = qeth_alloc_pool_entry(buf_elements);
293 if (!entry) {
294 list_for_each_entry_safe(entry, tmp, &entries,
295 init_list) {
296 list_del(&entry->init_list);
297 qeth_free_pool_entry(entry);
298 }
299
300 return -ENOMEM;
301 }
302
303 list_add(&entry->init_list, &entries);
304
305 delta--;
306 }
307
308 list_splice(&entries, &pool->entry_list);
309
310out:
311 card->qdio.in_buf_pool.buf_count = count;
312 pool->buf_count = count;
313 return 0;
314}
315EXPORT_SYMBOL_GPL(qeth_resize_buffer_pool);
316
317static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
318{
319 if (!q)
320 return;
321
322 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
323 kfree(q);
324}
325
326static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
327{
328 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
329 int i;
330
331 if (!q)
332 return NULL;
333
334 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
335 kfree(q);
336 return NULL;
337 }
338
339 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
340 q->bufs[i].buffer = q->qdio_bufs[i];
341
342 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
343 return q;
344}
345
346static int qeth_cq_init(struct qeth_card *card)
347{
348 int rc;
349
350 if (card->options.cq == QETH_CQ_ENABLED) {
351 QETH_CARD_TEXT(card, 2, "cqinit");
352 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
353 QDIO_MAX_BUFFERS_PER_Q);
354 card->qdio.c_q->next_buf_to_init = 127;
355
356 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 1, 0, 127);
357 if (rc) {
358 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
359 goto out;
360 }
361 }
362 rc = 0;
363out:
364 return rc;
365}
366
367static int qeth_alloc_cq(struct qeth_card *card)
368{
369 if (card->options.cq == QETH_CQ_ENABLED) {
370 QETH_CARD_TEXT(card, 2, "cqon");
371 card->qdio.c_q = qeth_alloc_qdio_queue();
372 if (!card->qdio.c_q) {
373 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
374 return -ENOMEM;
375 }
376 } else {
377 QETH_CARD_TEXT(card, 2, "nocq");
378 card->qdio.c_q = NULL;
379 }
380 return 0;
381}
382
383static void qeth_free_cq(struct qeth_card *card)
384{
385 if (card->qdio.c_q) {
386 qeth_free_qdio_queue(card->qdio.c_q);
387 card->qdio.c_q = NULL;
388 }
389}
390
391static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
392 int delayed)
393{
394 enum iucv_tx_notify n;
395
396 switch (sbalf15) {
397 case 0:
398 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
399 break;
400 case 4:
401 case 16:
402 case 17:
403 case 18:
404 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
405 TX_NOTIFY_UNREACHABLE;
406 break;
407 default:
408 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
409 TX_NOTIFY_GENERALERROR;
410 break;
411 }
412
413 return n;
414}
415
416static void qeth_put_cmd(struct qeth_cmd_buffer *iob)
417{
418 if (refcount_dec_and_test(&iob->ref_count)) {
419 kfree(iob->data);
420 kfree(iob);
421 }
422}
423static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
424 void *data)
425{
426 ccw->cmd_code = cmd_code;
427 ccw->flags = flags | CCW_FLAG_SLI;
428 ccw->count = len;
429 ccw->cda = (__u32)virt_to_phys(data);
430}
431
432static int __qeth_issue_next_read(struct qeth_card *card)
433{
434 struct qeth_cmd_buffer *iob = card->read_cmd;
435 struct qeth_channel *channel = iob->channel;
436 struct ccw1 *ccw = __ccw_from_cmd(iob);
437 int rc;
438
439 QETH_CARD_TEXT(card, 5, "issnxrd");
440 if (channel->state != CH_STATE_UP)
441 return -EIO;
442
443 memset(iob->data, 0, iob->length);
444 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
445 iob->callback = qeth_issue_next_read_cb;
446
447 qeth_get_cmd(iob);
448
449 QETH_CARD_TEXT(card, 6, "noirqpnd");
450 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
451 if (!rc) {
452 channel->active_cmd = iob;
453 } else {
454 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
455 rc, CARD_DEVID(card));
456 qeth_unlock_channel(card, channel);
457 qeth_put_cmd(iob);
458 card->read_or_write_problem = 1;
459 qeth_schedule_recovery(card);
460 }
461 return rc;
462}
463
464static int qeth_issue_next_read(struct qeth_card *card)
465{
466 int ret;
467
468 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
469 ret = __qeth_issue_next_read(card);
470 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
471
472 return ret;
473}
474
475static void qeth_enqueue_cmd(struct qeth_card *card,
476 struct qeth_cmd_buffer *iob)
477{
478 spin_lock_irq(&card->lock);
479 list_add_tail(&iob->list_entry, &card->cmd_waiter_list);
480 spin_unlock_irq(&card->lock);
481}
482
483static void qeth_dequeue_cmd(struct qeth_card *card,
484 struct qeth_cmd_buffer *iob)
485{
486 spin_lock_irq(&card->lock);
487 list_del(&iob->list_entry);
488 spin_unlock_irq(&card->lock);
489}
490
491static void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
492{
493 iob->rc = reason;
494 complete(&iob->done);
495}
496
497static void qeth_flush_local_addrs4(struct qeth_card *card)
498{
499 struct qeth_local_addr *addr;
500 struct hlist_node *tmp;
501 unsigned int i;
502
503 spin_lock_irq(&card->local_addrs4_lock);
504 hash_for_each_safe(card->local_addrs4, i, tmp, addr, hnode) {
505 hash_del_rcu(&addr->hnode);
506 kfree_rcu(addr, rcu);
507 }
508 spin_unlock_irq(&card->local_addrs4_lock);
509}
510
511static void qeth_flush_local_addrs6(struct qeth_card *card)
512{
513 struct qeth_local_addr *addr;
514 struct hlist_node *tmp;
515 unsigned int i;
516
517 spin_lock_irq(&card->local_addrs6_lock);
518 hash_for_each_safe(card->local_addrs6, i, tmp, addr, hnode) {
519 hash_del_rcu(&addr->hnode);
520 kfree_rcu(addr, rcu);
521 }
522 spin_unlock_irq(&card->local_addrs6_lock);
523}
524
525static void qeth_flush_local_addrs(struct qeth_card *card)
526{
527 qeth_flush_local_addrs4(card);
528 qeth_flush_local_addrs6(card);
529}
530
531static void qeth_add_local_addrs4(struct qeth_card *card,
532 struct qeth_ipacmd_local_addrs4 *cmd)
533{
534 unsigned int i;
535
536 if (cmd->addr_length !=
537 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
538 dev_err_ratelimited(&card->gdev->dev,
539 "Dropped IPv4 ADD LOCAL ADDR event with bad length %u\n",
540 cmd->addr_length);
541 return;
542 }
543
544 spin_lock(&card->local_addrs4_lock);
545 for (i = 0; i < cmd->count; i++) {
546 unsigned int key = ipv4_addr_hash(cmd->addrs[i].addr);
547 struct qeth_local_addr *addr;
548 bool duplicate = false;
549
550 hash_for_each_possible(card->local_addrs4, addr, hnode, key) {
551 if (addr->addr.s6_addr32[3] == cmd->addrs[i].addr) {
552 duplicate = true;
553 break;
554 }
555 }
556
557 if (duplicate)
558 continue;
559
560 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
561 if (!addr) {
562 dev_err(&card->gdev->dev,
563 "Failed to allocate local addr object. Traffic to %pI4 might suffer.\n",
564 &cmd->addrs[i].addr);
565 continue;
566 }
567
568 ipv6_addr_set(&addr->addr, 0, 0, 0, cmd->addrs[i].addr);
569 hash_add_rcu(card->local_addrs4, &addr->hnode, key);
570 }
571 spin_unlock(&card->local_addrs4_lock);
572}
573
574static void qeth_add_local_addrs6(struct qeth_card *card,
575 struct qeth_ipacmd_local_addrs6 *cmd)
576{
577 unsigned int i;
578
579 if (cmd->addr_length !=
580 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
581 dev_err_ratelimited(&card->gdev->dev,
582 "Dropped IPv6 ADD LOCAL ADDR event with bad length %u\n",
583 cmd->addr_length);
584 return;
585 }
586
587 spin_lock(&card->local_addrs6_lock);
588 for (i = 0; i < cmd->count; i++) {
589 u32 key = ipv6_addr_hash(&cmd->addrs[i].addr);
590 struct qeth_local_addr *addr;
591 bool duplicate = false;
592
593 hash_for_each_possible(card->local_addrs6, addr, hnode, key) {
594 if (ipv6_addr_equal(&addr->addr, &cmd->addrs[i].addr)) {
595 duplicate = true;
596 break;
597 }
598 }
599
600 if (duplicate)
601 continue;
602
603 addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
604 if (!addr) {
605 dev_err(&card->gdev->dev,
606 "Failed to allocate local addr object. Traffic to %pI6c might suffer.\n",
607 &cmd->addrs[i].addr);
608 continue;
609 }
610
611 addr->addr = cmd->addrs[i].addr;
612 hash_add_rcu(card->local_addrs6, &addr->hnode, key);
613 }
614 spin_unlock(&card->local_addrs6_lock);
615}
616
617static void qeth_del_local_addrs4(struct qeth_card *card,
618 struct qeth_ipacmd_local_addrs4 *cmd)
619{
620 unsigned int i;
621
622 if (cmd->addr_length !=
623 sizeof_field(struct qeth_ipacmd_local_addr4, addr)) {
624 dev_err_ratelimited(&card->gdev->dev,
625 "Dropped IPv4 DEL LOCAL ADDR event with bad length %u\n",
626 cmd->addr_length);
627 return;
628 }
629
630 spin_lock(&card->local_addrs4_lock);
631 for (i = 0; i < cmd->count; i++) {
632 struct qeth_ipacmd_local_addr4 *addr = &cmd->addrs[i];
633 unsigned int key = ipv4_addr_hash(addr->addr);
634 struct qeth_local_addr *tmp;
635
636 hash_for_each_possible(card->local_addrs4, tmp, hnode, key) {
637 if (tmp->addr.s6_addr32[3] == addr->addr) {
638 hash_del_rcu(&tmp->hnode);
639 kfree_rcu(tmp, rcu);
640 break;
641 }
642 }
643 }
644 spin_unlock(&card->local_addrs4_lock);
645}
646
647static void qeth_del_local_addrs6(struct qeth_card *card,
648 struct qeth_ipacmd_local_addrs6 *cmd)
649{
650 unsigned int i;
651
652 if (cmd->addr_length !=
653 sizeof_field(struct qeth_ipacmd_local_addr6, addr)) {
654 dev_err_ratelimited(&card->gdev->dev,
655 "Dropped IPv6 DEL LOCAL ADDR event with bad length %u\n",
656 cmd->addr_length);
657 return;
658 }
659
660 spin_lock(&card->local_addrs6_lock);
661 for (i = 0; i < cmd->count; i++) {
662 struct qeth_ipacmd_local_addr6 *addr = &cmd->addrs[i];
663 u32 key = ipv6_addr_hash(&addr->addr);
664 struct qeth_local_addr *tmp;
665
666 hash_for_each_possible(card->local_addrs6, tmp, hnode, key) {
667 if (ipv6_addr_equal(&tmp->addr, &addr->addr)) {
668 hash_del_rcu(&tmp->hnode);
669 kfree_rcu(tmp, rcu);
670 break;
671 }
672 }
673 }
674 spin_unlock(&card->local_addrs6_lock);
675}
676
677static bool qeth_next_hop_is_local_v4(struct qeth_card *card,
678 struct sk_buff *skb)
679{
680 struct qeth_local_addr *tmp;
681 bool is_local = false;
682 unsigned int key;
683 __be32 next_hop;
684
685 if (hash_empty(card->local_addrs4))
686 return false;
687
688 rcu_read_lock();
689 next_hop = qeth_next_hop_v4_rcu(skb,
690 qeth_dst_check_rcu(skb, htons(ETH_P_IP)));
691 key = ipv4_addr_hash(next_hop);
692
693 hash_for_each_possible_rcu(card->local_addrs4, tmp, hnode, key) {
694 if (tmp->addr.s6_addr32[3] == next_hop) {
695 is_local = true;
696 break;
697 }
698 }
699 rcu_read_unlock();
700
701 return is_local;
702}
703
704static bool qeth_next_hop_is_local_v6(struct qeth_card *card,
705 struct sk_buff *skb)
706{
707 struct qeth_local_addr *tmp;
708 struct in6_addr *next_hop;
709 bool is_local = false;
710 u32 key;
711
712 if (hash_empty(card->local_addrs6))
713 return false;
714
715 rcu_read_lock();
716 next_hop = qeth_next_hop_v6_rcu(skb,
717 qeth_dst_check_rcu(skb, htons(ETH_P_IPV6)));
718 key = ipv6_addr_hash(next_hop);
719
720 hash_for_each_possible_rcu(card->local_addrs6, tmp, hnode, key) {
721 if (ipv6_addr_equal(&tmp->addr, next_hop)) {
722 is_local = true;
723 break;
724 }
725 }
726 rcu_read_unlock();
727
728 return is_local;
729}
730
731static int qeth_debugfs_local_addr_show(struct seq_file *m, void *v)
732{
733 struct qeth_card *card = m->private;
734 struct qeth_local_addr *tmp;
735 unsigned int i;
736
737 rcu_read_lock();
738 hash_for_each_rcu(card->local_addrs4, i, tmp, hnode)
739 seq_printf(m, "%pI4\n", &tmp->addr.s6_addr32[3]);
740 hash_for_each_rcu(card->local_addrs6, i, tmp, hnode)
741 seq_printf(m, "%pI6c\n", &tmp->addr);
742 rcu_read_unlock();
743
744 return 0;
745}
746
747DEFINE_SHOW_ATTRIBUTE(qeth_debugfs_local_addr);
748
749static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
750 struct qeth_card *card)
751{
752 const char *ipa_name;
753 int com = cmd->hdr.command;
754
755 ipa_name = qeth_get_ipa_cmd_name(com);
756
757 if (rc)
758 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
759 ipa_name, com, CARD_DEVID(card), rc,
760 qeth_get_ipa_msg(rc));
761 else
762 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
763 ipa_name, com, CARD_DEVID(card));
764}
765
766static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
767 struct qeth_ipa_cmd *cmd)
768{
769 QETH_CARD_TEXT(card, 5, "chkipad");
770
771 if (IS_IPA_REPLY(cmd)) {
772 if (cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
773 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
774 return cmd;
775 }
776
777
778 switch (cmd->hdr.command) {
779 case IPA_CMD_STOPLAN:
780 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
781 dev_err(&card->gdev->dev,
782 "Adjacent port of interface %s is no longer in reflective relay mode, trigger recovery\n",
783 netdev_name(card->dev));
784
785 qeth_schedule_recovery(card);
786 } else {
787
788 dev_warn(&card->gdev->dev,
789 "The link for interface %s on CHPID 0x%X failed\n",
790 netdev_name(card->dev), card->info.chpid);
791 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
792 netif_carrier_off(card->dev);
793 }
794 return NULL;
795 case IPA_CMD_STARTLAN:
796 dev_info(&card->gdev->dev,
797 "The link for %s on CHPID 0x%X has been restored\n",
798 netdev_name(card->dev), card->info.chpid);
799 if (card->info.hwtrap)
800 card->info.hwtrap = 2;
801 qeth_schedule_recovery(card);
802 return NULL;
803 case IPA_CMD_SETBRIDGEPORT_IQD:
804 case IPA_CMD_SETBRIDGEPORT_OSA:
805 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
806 if (card->discipline->control_event_handler(card, cmd))
807 return cmd;
808 return NULL;
809 case IPA_CMD_REGISTER_LOCAL_ADDR:
810 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
811 qeth_add_local_addrs4(card, &cmd->data.local_addrs4);
812 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
813 qeth_add_local_addrs6(card, &cmd->data.local_addrs6);
814
815 QETH_CARD_TEXT(card, 3, "irla");
816 return NULL;
817 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
818 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
819 qeth_del_local_addrs4(card, &cmd->data.local_addrs4);
820 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
821 qeth_del_local_addrs6(card, &cmd->data.local_addrs6);
822
823 QETH_CARD_TEXT(card, 3, "urla");
824 return NULL;
825 default:
826 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
827 return cmd;
828 }
829}
830
831static void qeth_clear_ipacmd_list(struct qeth_card *card)
832{
833 struct qeth_cmd_buffer *iob;
834 unsigned long flags;
835
836 QETH_CARD_TEXT(card, 4, "clipalst");
837
838 spin_lock_irqsave(&card->lock, flags);
839 list_for_each_entry(iob, &card->cmd_waiter_list, list_entry)
840 qeth_notify_cmd(iob, -ECANCELED);
841 spin_unlock_irqrestore(&card->lock, flags);
842}
843
844static int qeth_check_idx_response(struct qeth_card *card,
845 unsigned char *buffer)
846{
847 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
848 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
849 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
850 buffer[4]);
851 QETH_CARD_TEXT(card, 2, "ckidxres");
852 QETH_CARD_TEXT(card, 2, " idxterm");
853 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
854 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
855 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
856 dev_err(&card->gdev->dev,
857 "The device does not support the configured transport mode\n");
858 return -EPROTONOSUPPORT;
859 }
860 return -EIO;
861 }
862 return 0;
863}
864
865static void qeth_release_buffer_cb(struct qeth_card *card,
866 struct qeth_cmd_buffer *iob,
867 unsigned int data_length)
868{
869 qeth_put_cmd(iob);
870}
871
872static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
873{
874 qeth_notify_cmd(iob, rc);
875 qeth_put_cmd(iob);
876}
877
878static struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
879 unsigned int length,
880 unsigned int ccws, long timeout)
881{
882 struct qeth_cmd_buffer *iob;
883
884 if (length > QETH_BUFSIZE)
885 return NULL;
886
887 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
888 if (!iob)
889 return NULL;
890
891 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
892 GFP_KERNEL | GFP_DMA);
893 if (!iob->data) {
894 kfree(iob);
895 return NULL;
896 }
897
898 init_completion(&iob->done);
899 spin_lock_init(&iob->lock);
900 refcount_set(&iob->ref_count, 1);
901 iob->channel = channel;
902 iob->timeout = timeout;
903 iob->length = length;
904 return iob;
905}
906
907static void qeth_issue_next_read_cb(struct qeth_card *card,
908 struct qeth_cmd_buffer *iob,
909 unsigned int data_length)
910{
911 struct qeth_cmd_buffer *request = NULL;
912 struct qeth_ipa_cmd *cmd = NULL;
913 struct qeth_reply *reply = NULL;
914 struct qeth_cmd_buffer *tmp;
915 unsigned long flags;
916 int rc = 0;
917
918 QETH_CARD_TEXT(card, 4, "sndctlcb");
919 rc = qeth_check_idx_response(card, iob->data);
920 switch (rc) {
921 case 0:
922 break;
923 case -EIO:
924 qeth_schedule_recovery(card);
925 fallthrough;
926 default:
927 qeth_clear_ipacmd_list(card);
928 goto err_idx;
929 }
930
931 cmd = __ipa_reply(iob);
932 if (cmd) {
933 cmd = qeth_check_ipa_data(card, cmd);
934 if (!cmd)
935 goto out;
936 }
937
938
939 spin_lock_irqsave(&card->lock, flags);
940 list_for_each_entry(tmp, &card->cmd_waiter_list, list_entry) {
941 if (tmp->match && tmp->match(tmp, iob)) {
942 request = tmp;
943
944 qeth_get_cmd(request);
945 break;
946 }
947 }
948 spin_unlock_irqrestore(&card->lock, flags);
949
950 if (!request)
951 goto out;
952
953 reply = &request->reply;
954 if (!reply->callback) {
955 rc = 0;
956 goto no_callback;
957 }
958
959 spin_lock_irqsave(&request->lock, flags);
960 if (request->rc)
961
962 rc = request->rc;
963 else
964 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
965 (unsigned long)iob);
966 spin_unlock_irqrestore(&request->lock, flags);
967
968no_callback:
969 if (rc <= 0)
970 qeth_notify_cmd(request, rc);
971 qeth_put_cmd(request);
972out:
973 memcpy(&card->seqno.pdu_hdr_ack,
974 QETH_PDU_HEADER_SEQ_NO(iob->data),
975 QETH_SEQ_NO_LENGTH);
976 __qeth_issue_next_read(card);
977err_idx:
978 qeth_put_cmd(iob);
979}
980
981static int qeth_set_thread_start_bit(struct qeth_card *card,
982 unsigned long thread)
983{
984 unsigned long flags;
985 int rc = 0;
986
987 spin_lock_irqsave(&card->thread_mask_lock, flags);
988 if (!(card->thread_allowed_mask & thread))
989 rc = -EPERM;
990 else if (card->thread_start_mask & thread)
991 rc = -EBUSY;
992 else
993 card->thread_start_mask |= thread;
994 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
995
996 return rc;
997}
998
999static void qeth_clear_thread_start_bit(struct qeth_card *card,
1000 unsigned long thread)
1001{
1002 unsigned long flags;
1003
1004 spin_lock_irqsave(&card->thread_mask_lock, flags);
1005 card->thread_start_mask &= ~thread;
1006 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1007 wake_up(&card->wait_q);
1008}
1009
1010static void qeth_clear_thread_running_bit(struct qeth_card *card,
1011 unsigned long thread)
1012{
1013 unsigned long flags;
1014
1015 spin_lock_irqsave(&card->thread_mask_lock, flags);
1016 card->thread_running_mask &= ~thread;
1017 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1018 wake_up_all(&card->wait_q);
1019}
1020
1021static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1022{
1023 unsigned long flags;
1024 int rc = 0;
1025
1026 spin_lock_irqsave(&card->thread_mask_lock, flags);
1027 if (card->thread_start_mask & thread) {
1028 if ((card->thread_allowed_mask & thread) &&
1029 !(card->thread_running_mask & thread)) {
1030 rc = 1;
1031 card->thread_start_mask &= ~thread;
1032 card->thread_running_mask |= thread;
1033 } else
1034 rc = -EPERM;
1035 }
1036 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1037 return rc;
1038}
1039
1040static int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1041{
1042 int rc = 0;
1043
1044 wait_event(card->wait_q,
1045 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1046 return rc;
1047}
1048
1049int qeth_schedule_recovery(struct qeth_card *card)
1050{
1051 int rc;
1052
1053 QETH_CARD_TEXT(card, 2, "startrec");
1054
1055 rc = qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD);
1056 if (!rc)
1057 schedule_work(&card->kernel_thread_starter);
1058
1059 return rc;
1060}
1061
1062static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
1063 struct irb *irb)
1064{
1065 int dstat, cstat;
1066 char *sense;
1067
1068 sense = (char *) irb->ecw;
1069 cstat = irb->scsw.cmd.cstat;
1070 dstat = irb->scsw.cmd.dstat;
1071
1072 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1073 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1074 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1075 QETH_CARD_TEXT(card, 2, "CGENCHK");
1076 dev_warn(&cdev->dev, "The qeth device driver "
1077 "failed to recover an error on the device\n");
1078 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
1079 CCW_DEVID(cdev), dstat, cstat);
1080 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1081 16, 1, irb, 64, 1);
1082 return -EIO;
1083 }
1084
1085 if (dstat & DEV_STAT_UNIT_CHECK) {
1086 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1087 SENSE_RESETTING_EVENT_FLAG) {
1088 QETH_CARD_TEXT(card, 2, "REVIND");
1089 return -EIO;
1090 }
1091 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1092 SENSE_COMMAND_REJECT_FLAG) {
1093 QETH_CARD_TEXT(card, 2, "CMDREJi");
1094 return -EIO;
1095 }
1096 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1097 QETH_CARD_TEXT(card, 2, "AFFE");
1098 return -EIO;
1099 }
1100 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1101 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1102 return 0;
1103 }
1104 QETH_CARD_TEXT(card, 2, "DGENCHK");
1105 return -EIO;
1106 }
1107 return 0;
1108}
1109
1110static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
1111 struct irb *irb)
1112{
1113 if (!IS_ERR(irb))
1114 return 0;
1115
1116 switch (PTR_ERR(irb)) {
1117 case -EIO:
1118 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
1119 CCW_DEVID(cdev));
1120 QETH_CARD_TEXT(card, 2, "ckirberr");
1121 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1122 return -EIO;
1123 case -ETIMEDOUT:
1124 dev_warn(&cdev->dev, "A hardware operation timed out"
1125 " on the device\n");
1126 QETH_CARD_TEXT(card, 2, "ckirberr");
1127 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1128 return -ETIMEDOUT;
1129 default:
1130 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
1131 PTR_ERR(irb), CCW_DEVID(cdev));
1132 QETH_CARD_TEXT(card, 2, "ckirberr");
1133 QETH_CARD_TEXT(card, 2, " rc???");
1134 return PTR_ERR(irb);
1135 }
1136}
1137
1138static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1139 struct irb *irb)
1140{
1141 int rc;
1142 int cstat, dstat;
1143 struct qeth_cmd_buffer *iob = NULL;
1144 struct ccwgroup_device *gdev;
1145 struct qeth_channel *channel;
1146 struct qeth_card *card;
1147
1148
1149 gdev = dev_get_drvdata(&cdev->dev);
1150 card = dev_get_drvdata(&gdev->dev);
1151
1152 QETH_CARD_TEXT(card, 5, "irq");
1153
1154 if (card->read.ccwdev == cdev) {
1155 channel = &card->read;
1156 QETH_CARD_TEXT(card, 5, "read");
1157 } else if (card->write.ccwdev == cdev) {
1158 channel = &card->write;
1159 QETH_CARD_TEXT(card, 5, "write");
1160 } else {
1161 channel = &card->data;
1162 QETH_CARD_TEXT(card, 5, "data");
1163 }
1164
1165 if (intparm == 0) {
1166 QETH_CARD_TEXT(card, 5, "irqunsol");
1167 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
1168 QETH_CARD_TEXT(card, 5, "irqunexp");
1169
1170 dev_err(&cdev->dev,
1171 "Received IRQ with intparm %lx, expected %px\n",
1172 intparm, channel->active_cmd);
1173 if (channel->active_cmd)
1174 qeth_cancel_cmd(channel->active_cmd, -EIO);
1175 } else {
1176 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1177 }
1178
1179 qeth_unlock_channel(card, channel);
1180
1181 rc = qeth_check_irb_error(card, cdev, irb);
1182 if (rc) {
1183
1184 if (iob)
1185 qeth_cancel_cmd(iob, rc);
1186 return;
1187 }
1188
1189 if (irb->scsw.cmd.fctl & SCSW_FCTL_CLEAR_FUNC) {
1190 channel->state = CH_STATE_STOPPED;
1191 wake_up(&card->wait_q);
1192 }
1193
1194 if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
1195 channel->state = CH_STATE_HALTED;
1196 wake_up(&card->wait_q);
1197 }
1198
1199 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1200 SCSW_FCTL_HALT_FUNC))) {
1201 qeth_cancel_cmd(iob, -ECANCELED);
1202 iob = NULL;
1203 }
1204
1205 cstat = irb->scsw.cmd.cstat;
1206 dstat = irb->scsw.cmd.dstat;
1207
1208 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1209 (dstat & DEV_STAT_UNIT_CHECK) ||
1210 (cstat)) {
1211 if (irb->esw.esw0.erw.cons) {
1212 dev_warn(&channel->ccwdev->dev,
1213 "The qeth device driver failed to recover "
1214 "an error on the device\n");
1215 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1216 CCW_DEVID(channel->ccwdev), cstat,
1217 dstat);
1218 print_hex_dump(KERN_WARNING, "qeth: irb ",
1219 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1220 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1221 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1222 }
1223
1224 rc = qeth_get_problem(card, cdev, irb);
1225 if (rc) {
1226 card->read_or_write_problem = 1;
1227 if (iob)
1228 qeth_cancel_cmd(iob, rc);
1229 qeth_clear_ipacmd_list(card);
1230 qeth_schedule_recovery(card);
1231 return;
1232 }
1233 }
1234
1235 if (iob) {
1236
1237 if (irb->scsw.cmd.count > iob->length) {
1238 qeth_cancel_cmd(iob, -EIO);
1239 return;
1240 }
1241 if (iob->callback)
1242 iob->callback(card, iob,
1243 iob->length - irb->scsw.cmd.count);
1244 }
1245}
1246
1247static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1248 struct qeth_qdio_out_buffer *buf,
1249 enum iucv_tx_notify notification)
1250{
1251 struct sk_buff *skb;
1252
1253 skb_queue_walk(&buf->skb_list, skb) {
1254 struct sock *sk = skb->sk;
1255
1256 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1257 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1258 if (sk && sk->sk_family == PF_IUCV)
1259 iucv_sk(sk)->sk_txnotify(sk, notification);
1260 }
1261}
1262
1263static void qeth_tx_complete_buf(struct qeth_qdio_out_q *queue,
1264 struct qeth_qdio_out_buffer *buf, bool error,
1265 int budget)
1266{
1267 struct sk_buff *skb;
1268
1269
1270 if (buf->next_element_to_fill == 0)
1271 return;
1272
1273 QETH_TXQ_STAT_INC(queue, bufs);
1274 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1275 if (error) {
1276 QETH_TXQ_STAT_ADD(queue, tx_errors, buf->frames);
1277 } else {
1278 QETH_TXQ_STAT_ADD(queue, tx_packets, buf->frames);
1279 QETH_TXQ_STAT_ADD(queue, tx_bytes, buf->bytes);
1280 }
1281
1282 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1283 unsigned int bytes = qdisc_pkt_len(skb);
1284 bool is_tso = skb_is_gso(skb);
1285 unsigned int packets;
1286
1287 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1288 if (!error) {
1289 if (skb->ip_summed == CHECKSUM_PARTIAL)
1290 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1291 if (skb_is_nonlinear(skb))
1292 QETH_TXQ_STAT_INC(queue, skbs_sg);
1293 if (is_tso) {
1294 QETH_TXQ_STAT_INC(queue, skbs_tso);
1295 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1296 }
1297 }
1298
1299 napi_consume_skb(skb, budget);
1300 }
1301}
1302
1303static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1304 struct qeth_qdio_out_buffer *buf,
1305 bool error, int budget)
1306{
1307 int i;
1308
1309
1310 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) {
1311 atomic_dec(&queue->set_pci_flags_count);
1312 QETH_TXQ_STAT_INC(queue, completion_irq);
1313 }
1314
1315 qeth_tx_complete_buf(queue, buf, error, budget);
1316
1317 for (i = 0; i < queue->max_elements; ++i) {
1318 void *data = phys_to_virt(buf->buffer->element[i].addr);
1319
1320 if (__test_and_clear_bit(i, buf->from_kmem_cache) && data)
1321 kmem_cache_free(qeth_core_header_cache, data);
1322 }
1323
1324 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1325 buf->next_element_to_fill = 0;
1326 buf->frames = 0;
1327 buf->bytes = 0;
1328 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1329}
1330
1331static void qeth_free_out_buf(struct qeth_qdio_out_buffer *buf)
1332{
1333 if (buf->aob)
1334 kmem_cache_free(qeth_qaob_cache, buf->aob);
1335 kmem_cache_free(qeth_qdio_outbuf_cache, buf);
1336}
1337
1338static void qeth_tx_complete_pending_bufs(struct qeth_card *card,
1339 struct qeth_qdio_out_q *queue,
1340 bool drain, int budget)
1341{
1342 struct qeth_qdio_out_buffer *buf, *tmp;
1343
1344 list_for_each_entry_safe(buf, tmp, &queue->pending_bufs, list_entry) {
1345 struct qeth_qaob_priv1 *priv;
1346 struct qaob *aob = buf->aob;
1347 enum iucv_tx_notify notify;
1348 unsigned int i;
1349
1350 priv = (struct qeth_qaob_priv1 *)&aob->user1;
1351 if (drain || READ_ONCE(priv->state) == QETH_QAOB_DONE) {
1352 QETH_CARD_TEXT(card, 5, "fp");
1353 QETH_CARD_TEXT_(card, 5, "%lx", (long) buf);
1354
1355 notify = drain ? TX_NOTIFY_GENERALERROR :
1356 qeth_compute_cq_notification(aob->aorc, 1);
1357 qeth_notify_skbs(queue, buf, notify);
1358 qeth_tx_complete_buf(queue, buf, drain, budget);
1359
1360 for (i = 0;
1361 i < aob->sb_count && i < queue->max_elements;
1362 i++) {
1363 void *data = phys_to_virt(aob->sba[i]);
1364
1365 if (test_bit(i, buf->from_kmem_cache) && data)
1366 kmem_cache_free(qeth_core_header_cache,
1367 data);
1368 }
1369
1370 list_del(&buf->list_entry);
1371 qeth_free_out_buf(buf);
1372 }
1373 }
1374}
1375
1376static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1377{
1378 int j;
1379
1380 qeth_tx_complete_pending_bufs(q->card, q, true, 0);
1381
1382 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1383 if (!q->bufs[j])
1384 continue;
1385
1386 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1387 if (free) {
1388 qeth_free_out_buf(q->bufs[j]);
1389 q->bufs[j] = NULL;
1390 }
1391 }
1392}
1393
1394static void qeth_drain_output_queues(struct qeth_card *card)
1395{
1396 int i;
1397
1398 QETH_CARD_TEXT(card, 2, "clearqdbf");
1399
1400 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1401 if (card->qdio.out_qs[i])
1402 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1403 }
1404}
1405
1406static void qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1407{
1408 unsigned int max = single ? 1 : card->dev->num_tx_queues;
1409
1410 if (card->qdio.no_out_queues == max)
1411 return;
1412
1413 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1414 qeth_free_qdio_queues(card);
1415
1416 if (max == 1 && card->qdio.do_prio_queueing != QETH_PRIOQ_DEFAULT)
1417 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1418
1419 card->qdio.no_out_queues = max;
1420}
1421
1422static int qeth_update_from_chp_desc(struct qeth_card *card)
1423{
1424 struct ccw_device *ccwdev;
1425 struct channel_path_desc_fmt0 *chp_dsc;
1426
1427 QETH_CARD_TEXT(card, 2, "chp_desc");
1428
1429 ccwdev = card->data.ccwdev;
1430 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1431 if (!chp_dsc)
1432 return -ENOMEM;
1433
1434 card->info.func_level = 0x4100 + chp_dsc->desc;
1435
1436 if (IS_OSD(card) || IS_OSX(card))
1437
1438 qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1439
1440 kfree(chp_dsc);
1441 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1442 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1443 return 0;
1444}
1445
1446static void qeth_init_qdio_info(struct qeth_card *card)
1447{
1448 QETH_CARD_TEXT(card, 4, "intqdinf");
1449 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1450 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1451 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1452
1453
1454 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1455 if (IS_IQD(card))
1456 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1457 else
1458 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1459 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1460 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1461 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1462}
1463
1464static void qeth_set_initial_options(struct qeth_card *card)
1465{
1466 card->options.route4.type = NO_ROUTER;
1467 card->options.route6.type = NO_ROUTER;
1468 card->options.isolation = ISOLATION_MODE_NONE;
1469 card->options.cq = QETH_CQ_DISABLED;
1470 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1471}
1472
1473static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1474{
1475 unsigned long flags;
1476 int rc = 0;
1477
1478 spin_lock_irqsave(&card->thread_mask_lock, flags);
1479 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1480 (u8) card->thread_start_mask,
1481 (u8) card->thread_allowed_mask,
1482 (u8) card->thread_running_mask);
1483 rc = (card->thread_start_mask & thread);
1484 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1485 return rc;
1486}
1487
1488static int qeth_do_reset(void *data);
1489static void qeth_start_kernel_thread(struct work_struct *work)
1490{
1491 struct task_struct *ts;
1492 struct qeth_card *card = container_of(work, struct qeth_card,
1493 kernel_thread_starter);
1494 QETH_CARD_TEXT(card, 2, "strthrd");
1495
1496 if (card->read.state != CH_STATE_UP &&
1497 card->write.state != CH_STATE_UP)
1498 return;
1499 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1500 ts = kthread_run(qeth_do_reset, card, "qeth_recover");
1501 if (IS_ERR(ts)) {
1502 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1503 qeth_clear_thread_running_bit(card,
1504 QETH_RECOVER_THREAD);
1505 }
1506 }
1507}
1508
1509static void qeth_buffer_reclaim_work(struct work_struct *);
1510static void qeth_setup_card(struct qeth_card *card)
1511{
1512 QETH_CARD_TEXT(card, 2, "setupcrd");
1513
1514 card->info.type = CARD_RDEV(card)->id.driver_info;
1515 card->state = CARD_STATE_DOWN;
1516 spin_lock_init(&card->lock);
1517 spin_lock_init(&card->thread_mask_lock);
1518 mutex_init(&card->conf_mutex);
1519 mutex_init(&card->discipline_mutex);
1520 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1521 INIT_LIST_HEAD(&card->cmd_waiter_list);
1522 init_waitqueue_head(&card->wait_q);
1523 qeth_set_initial_options(card);
1524
1525 INIT_LIST_HEAD(&card->ipato.entries);
1526 qeth_init_qdio_info(card);
1527 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1528 hash_init(card->rx_mode_addrs);
1529 hash_init(card->local_addrs4);
1530 hash_init(card->local_addrs6);
1531 spin_lock_init(&card->local_addrs4_lock);
1532 spin_lock_init(&card->local_addrs6_lock);
1533}
1534
1535static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1536{
1537 struct qeth_card *card = container_of(slr, struct qeth_card,
1538 qeth_service_level);
1539 if (card->info.mcl_level[0])
1540 seq_printf(m, "qeth: %s firmware level %s\n",
1541 CARD_BUS_ID(card), card->info.mcl_level);
1542}
1543
1544static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1545{
1546 struct qeth_card *card;
1547
1548 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1549 card = kzalloc(sizeof(*card), GFP_KERNEL);
1550 if (!card)
1551 goto out;
1552 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1553
1554 card->gdev = gdev;
1555 dev_set_drvdata(&gdev->dev, card);
1556 CARD_RDEV(card) = gdev->cdev[0];
1557 CARD_WDEV(card) = gdev->cdev[1];
1558 CARD_DDEV(card) = gdev->cdev[2];
1559
1560 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1561 dev_name(&gdev->dev));
1562 if (!card->event_wq)
1563 goto out_wq;
1564
1565 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1566 if (!card->read_cmd)
1567 goto out_read_cmd;
1568
1569 card->debugfs = debugfs_create_dir(dev_name(&gdev->dev),
1570 qeth_debugfs_root);
1571 debugfs_create_file("local_addrs", 0400, card->debugfs, card,
1572 &qeth_debugfs_local_addr_fops);
1573
1574 card->qeth_service_level.seq_print = qeth_core_sl_print;
1575 register_service_level(&card->qeth_service_level);
1576 return card;
1577
1578out_read_cmd:
1579 destroy_workqueue(card->event_wq);
1580out_wq:
1581 dev_set_drvdata(&gdev->dev, NULL);
1582 kfree(card);
1583out:
1584 return NULL;
1585}
1586
1587static int qeth_clear_channel(struct qeth_card *card,
1588 struct qeth_channel *channel)
1589{
1590 int rc;
1591
1592 QETH_CARD_TEXT(card, 3, "clearch");
1593 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1594 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1595 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1596
1597 if (rc)
1598 return rc;
1599 rc = wait_event_interruptible_timeout(card->wait_q,
1600 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1601 if (rc == -ERESTARTSYS)
1602 return rc;
1603 if (channel->state != CH_STATE_STOPPED)
1604 return -ETIME;
1605 channel->state = CH_STATE_DOWN;
1606 return 0;
1607}
1608
1609static int qeth_halt_channel(struct qeth_card *card,
1610 struct qeth_channel *channel)
1611{
1612 int rc;
1613
1614 QETH_CARD_TEXT(card, 3, "haltch");
1615 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1616 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1617 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1618
1619 if (rc)
1620 return rc;
1621 rc = wait_event_interruptible_timeout(card->wait_q,
1622 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1623 if (rc == -ERESTARTSYS)
1624 return rc;
1625 if (channel->state != CH_STATE_HALTED)
1626 return -ETIME;
1627 return 0;
1628}
1629
1630static int qeth_stop_channel(struct qeth_channel *channel)
1631{
1632 struct ccw_device *cdev = channel->ccwdev;
1633 int rc;
1634
1635 rc = ccw_device_set_offline(cdev);
1636
1637 spin_lock_irq(get_ccwdev_lock(cdev));
1638 if (channel->active_cmd)
1639 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1640 channel->active_cmd);
1641
1642 cdev->handler = NULL;
1643 spin_unlock_irq(get_ccwdev_lock(cdev));
1644
1645 return rc;
1646}
1647
1648static int qeth_start_channel(struct qeth_channel *channel)
1649{
1650 struct ccw_device *cdev = channel->ccwdev;
1651 int rc;
1652
1653 channel->state = CH_STATE_DOWN;
1654 xchg(&channel->active_cmd, NULL);
1655
1656 spin_lock_irq(get_ccwdev_lock(cdev));
1657 cdev->handler = qeth_irq;
1658 spin_unlock_irq(get_ccwdev_lock(cdev));
1659
1660 rc = ccw_device_set_online(cdev);
1661 if (rc)
1662 goto err;
1663
1664 return 0;
1665
1666err:
1667 spin_lock_irq(get_ccwdev_lock(cdev));
1668 cdev->handler = NULL;
1669 spin_unlock_irq(get_ccwdev_lock(cdev));
1670 return rc;
1671}
1672
1673static int qeth_halt_channels(struct qeth_card *card)
1674{
1675 int rc1 = 0, rc2 = 0, rc3 = 0;
1676
1677 QETH_CARD_TEXT(card, 3, "haltchs");
1678 rc1 = qeth_halt_channel(card, &card->read);
1679 rc2 = qeth_halt_channel(card, &card->write);
1680 rc3 = qeth_halt_channel(card, &card->data);
1681 if (rc1)
1682 return rc1;
1683 if (rc2)
1684 return rc2;
1685 return rc3;
1686}
1687
1688static int qeth_clear_channels(struct qeth_card *card)
1689{
1690 int rc1 = 0, rc2 = 0, rc3 = 0;
1691
1692 QETH_CARD_TEXT(card, 3, "clearchs");
1693 rc1 = qeth_clear_channel(card, &card->read);
1694 rc2 = qeth_clear_channel(card, &card->write);
1695 rc3 = qeth_clear_channel(card, &card->data);
1696 if (rc1)
1697 return rc1;
1698 if (rc2)
1699 return rc2;
1700 return rc3;
1701}
1702
1703static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1704{
1705 int rc = 0;
1706
1707 QETH_CARD_TEXT(card, 3, "clhacrd");
1708
1709 if (halt)
1710 rc = qeth_halt_channels(card);
1711 if (rc)
1712 return rc;
1713 return qeth_clear_channels(card);
1714}
1715
1716static int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1717{
1718 int rc = 0;
1719
1720 QETH_CARD_TEXT(card, 3, "qdioclr");
1721 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1722 QETH_QDIO_CLEANING)) {
1723 case QETH_QDIO_ESTABLISHED:
1724 if (IS_IQD(card))
1725 rc = qdio_shutdown(CARD_DDEV(card),
1726 QDIO_FLAG_CLEANUP_USING_HALT);
1727 else
1728 rc = qdio_shutdown(CARD_DDEV(card),
1729 QDIO_FLAG_CLEANUP_USING_CLEAR);
1730 if (rc)
1731 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1732 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1733 break;
1734 case QETH_QDIO_CLEANING:
1735 return rc;
1736 default:
1737 break;
1738 }
1739 rc = qeth_clear_halt_card(card, use_halt);
1740 if (rc)
1741 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1742 return rc;
1743}
1744
1745static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1746{
1747 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1748 struct diag26c_vnic_resp *response = NULL;
1749 struct diag26c_vnic_req *request = NULL;
1750 struct ccw_dev_id id;
1751 char userid[80];
1752 int rc = 0;
1753
1754 QETH_CARD_TEXT(card, 2, "vmlayer");
1755
1756 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1757 if (rc)
1758 goto out;
1759
1760 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1761 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1762 if (!request || !response) {
1763 rc = -ENOMEM;
1764 goto out;
1765 }
1766
1767 ccw_device_get_id(CARD_RDEV(card), &id);
1768 request->resp_buf_len = sizeof(*response);
1769 request->resp_version = DIAG26C_VERSION6_VM65918;
1770 request->req_format = DIAG26C_VNIC_INFO;
1771 ASCEBC(userid, 8);
1772 memcpy(&request->sys_name, userid, 8);
1773 request->devno = id.devno;
1774
1775 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1776 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1777 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1778 if (rc)
1779 goto out;
1780 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1781
1782 if (request->resp_buf_len < sizeof(*response) ||
1783 response->version != request->resp_version) {
1784 rc = -EIO;
1785 goto out;
1786 }
1787
1788 if (response->protocol == VNIC_INFO_PROT_L2)
1789 disc = QETH_DISCIPLINE_LAYER2;
1790 else if (response->protocol == VNIC_INFO_PROT_L3)
1791 disc = QETH_DISCIPLINE_LAYER3;
1792
1793out:
1794 kfree(response);
1795 kfree(request);
1796 if (rc)
1797 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1798 return disc;
1799}
1800
1801
1802static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1803{
1804 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1805
1806 if (IS_OSM(card))
1807 disc = QETH_DISCIPLINE_LAYER2;
1808 else if (IS_VM_NIC(card))
1809 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1810 qeth_vm_detect_layer(card);
1811
1812 switch (disc) {
1813 case QETH_DISCIPLINE_LAYER2:
1814 QETH_CARD_TEXT(card, 3, "force l2");
1815 break;
1816 case QETH_DISCIPLINE_LAYER3:
1817 QETH_CARD_TEXT(card, 3, "force l3");
1818 break;
1819 default:
1820 QETH_CARD_TEXT(card, 3, "force no");
1821 }
1822
1823 return disc;
1824}
1825
1826static void qeth_set_blkt_defaults(struct qeth_card *card)
1827{
1828 QETH_CARD_TEXT(card, 2, "cfgblkt");
1829
1830 if (card->info.use_v1_blkt) {
1831 card->info.blkt.time_total = 0;
1832 card->info.blkt.inter_packet = 0;
1833 card->info.blkt.inter_packet_jumbo = 0;
1834 } else {
1835 card->info.blkt.time_total = 250;
1836 card->info.blkt.inter_packet = 5;
1837 card->info.blkt.inter_packet_jumbo = 15;
1838 }
1839}
1840
1841static void qeth_idx_init(struct qeth_card *card)
1842{
1843 memset(&card->seqno, 0, sizeof(card->seqno));
1844
1845 card->token.issuer_rm_w = 0x00010103UL;
1846 card->token.cm_filter_w = 0x00010108UL;
1847 card->token.cm_connection_w = 0x0001010aUL;
1848 card->token.ulp_filter_w = 0x0001010bUL;
1849 card->token.ulp_connection_w = 0x0001010dUL;
1850
1851 switch (card->info.type) {
1852 case QETH_CARD_TYPE_IQD:
1853 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1854 break;
1855 case QETH_CARD_TYPE_OSD:
1856 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1857 break;
1858 default:
1859 break;
1860 }
1861}
1862
1863static void qeth_idx_finalize_cmd(struct qeth_card *card,
1864 struct qeth_cmd_buffer *iob)
1865{
1866 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1867 QETH_SEQ_NO_LENGTH);
1868 if (iob->channel == &card->write)
1869 card->seqno.trans_hdr++;
1870}
1871
1872static int qeth_peer_func_level(int level)
1873{
1874 if ((level & 0xff) == 8)
1875 return (level & 0xff) + 0x400;
1876 if (((level >> 8) & 3) == 1)
1877 return (level & 0xff) + 0x200;
1878 return level;
1879}
1880
1881static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1882 struct qeth_cmd_buffer *iob)
1883{
1884 qeth_idx_finalize_cmd(card, iob);
1885
1886 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1887 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1888 card->seqno.pdu_hdr++;
1889 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1890 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1891
1892 iob->callback = qeth_release_buffer_cb;
1893}
1894
1895static bool qeth_mpc_match_reply(struct qeth_cmd_buffer *iob,
1896 struct qeth_cmd_buffer *reply)
1897{
1898
1899 return !IS_IPA(reply->data);
1900}
1901
1902static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1903 const void *data,
1904 unsigned int data_length)
1905{
1906 struct qeth_cmd_buffer *iob;
1907
1908 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1909 if (!iob)
1910 return NULL;
1911
1912 memcpy(iob->data, data, data_length);
1913 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1914 iob->data);
1915 iob->finalize = qeth_mpc_finalize_cmd;
1916 iob->match = qeth_mpc_match_reply;
1917 return iob;
1918}
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942static int qeth_send_control_data(struct qeth_card *card,
1943 struct qeth_cmd_buffer *iob,
1944 int (*reply_cb)(struct qeth_card *cb_card,
1945 struct qeth_reply *cb_reply,
1946 unsigned long cb_cmd),
1947 void *reply_param)
1948{
1949 struct qeth_channel *channel = iob->channel;
1950 struct qeth_reply *reply = &iob->reply;
1951 long timeout = iob->timeout;
1952 int rc;
1953
1954 QETH_CARD_TEXT(card, 2, "sendctl");
1955
1956 reply->callback = reply_cb;
1957 reply->param = reply_param;
1958
1959 timeout = wait_event_interruptible_timeout(card->wait_q,
1960 qeth_trylock_channel(channel, iob),
1961 timeout);
1962 if (timeout <= 0) {
1963 qeth_put_cmd(iob);
1964 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1965 }
1966
1967 if (iob->finalize)
1968 iob->finalize(card, iob);
1969 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1970
1971 qeth_enqueue_cmd(card, iob);
1972
1973
1974 qeth_get_cmd(iob);
1975
1976 QETH_CARD_TEXT(card, 6, "noirqpnd");
1977 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1978 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1979 (addr_t) iob, 0, 0, timeout);
1980 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1981 if (rc) {
1982 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1983 CARD_DEVID(card), rc);
1984 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1985 qeth_dequeue_cmd(card, iob);
1986 qeth_put_cmd(iob);
1987 qeth_unlock_channel(card, channel);
1988 goto out;
1989 }
1990
1991 timeout = wait_for_completion_interruptible_timeout(&iob->done,
1992 timeout);
1993 if (timeout <= 0)
1994 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1995
1996 qeth_dequeue_cmd(card, iob);
1997
1998 if (reply_cb) {
1999
2000 spin_lock_irq(&iob->lock);
2001 if (rc)
2002
2003 iob->rc = rc;
2004 spin_unlock_irq(&iob->lock);
2005 }
2006
2007 if (!rc)
2008 rc = iob->rc;
2009
2010out:
2011 qeth_put_cmd(iob);
2012 return rc;
2013}
2014
2015struct qeth_node_desc {
2016 struct node_descriptor nd1;
2017 struct node_descriptor nd2;
2018 struct node_descriptor nd3;
2019};
2020
2021static void qeth_read_conf_data_cb(struct qeth_card *card,
2022 struct qeth_cmd_buffer *iob,
2023 unsigned int data_length)
2024{
2025 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
2026 int rc = 0;
2027 u8 *tag;
2028
2029 QETH_CARD_TEXT(card, 2, "cfgunit");
2030
2031 if (data_length < sizeof(*nd)) {
2032 rc = -EINVAL;
2033 goto out;
2034 }
2035
2036 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
2037 nd->nd1.plant[1] == _ascebc['M'];
2038 tag = (u8 *)&nd->nd1.tag;
2039 card->info.chpid = tag[0];
2040 card->info.unit_addr2 = tag[1];
2041
2042 tag = (u8 *)&nd->nd2.tag;
2043 card->info.cula = tag[1];
2044
2045 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
2046 nd->nd3.model[1] == 0xF0 &&
2047 nd->nd3.model[2] >= 0xF1 &&
2048 nd->nd3.model[2] <= 0xF4;
2049
2050out:
2051 qeth_notify_cmd(iob, rc);
2052 qeth_put_cmd(iob);
2053}
2054
2055static int qeth_read_conf_data(struct qeth_card *card)
2056{
2057 struct qeth_channel *channel = &card->data;
2058 struct qeth_cmd_buffer *iob;
2059 struct ciw *ciw;
2060
2061
2062 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
2063 if (!ciw || ciw->cmd == 0)
2064 return -EOPNOTSUPP;
2065 if (ciw->count < sizeof(struct qeth_node_desc))
2066 return -EINVAL;
2067
2068 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
2069 if (!iob)
2070 return -ENOMEM;
2071
2072 iob->callback = qeth_read_conf_data_cb;
2073 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
2074 iob->data);
2075
2076 return qeth_send_control_data(card, iob, NULL, NULL);
2077}
2078
2079static int qeth_idx_check_activate_response(struct qeth_card *card,
2080 struct qeth_channel *channel,
2081 struct qeth_cmd_buffer *iob)
2082{
2083 int rc;
2084
2085 rc = qeth_check_idx_response(card, iob->data);
2086 if (rc)
2087 return rc;
2088
2089 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
2090 return 0;
2091
2092
2093 QETH_CARD_TEXT_(card, 2, "idxneg%c",
2094 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2095
2096 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2097 case QETH_IDX_ACT_ERR_EXCL:
2098 dev_err(&channel->ccwdev->dev,
2099 "The adapter is used exclusively by another host\n");
2100 return -EBUSY;
2101 case QETH_IDX_ACT_ERR_AUTH:
2102 case QETH_IDX_ACT_ERR_AUTH_USER:
2103 dev_err(&channel->ccwdev->dev,
2104 "Setting the device online failed because of insufficient authorization\n");
2105 return -EPERM;
2106 default:
2107 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
2108 CCW_DEVID(channel->ccwdev));
2109 return -EIO;
2110 }
2111}
2112
2113static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
2114 struct qeth_cmd_buffer *iob,
2115 unsigned int data_length)
2116{
2117 struct qeth_channel *channel = iob->channel;
2118 u16 peer_level;
2119 int rc;
2120
2121 QETH_CARD_TEXT(card, 2, "idxrdcb");
2122
2123 rc = qeth_idx_check_activate_response(card, channel, iob);
2124 if (rc)
2125 goto out;
2126
2127 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2128 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
2129 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2130 CCW_DEVID(channel->ccwdev),
2131 card->info.func_level, peer_level);
2132 rc = -EINVAL;
2133 goto out;
2134 }
2135
2136 memcpy(&card->token.issuer_rm_r,
2137 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2138 QETH_MPC_TOKEN_LENGTH);
2139 memcpy(&card->info.mcl_level[0],
2140 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2141
2142out:
2143 qeth_notify_cmd(iob, rc);
2144 qeth_put_cmd(iob);
2145}
2146
2147static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
2148 struct qeth_cmd_buffer *iob,
2149 unsigned int data_length)
2150{
2151 struct qeth_channel *channel = iob->channel;
2152 u16 peer_level;
2153 int rc;
2154
2155 QETH_CARD_TEXT(card, 2, "idxwrcb");
2156
2157 rc = qeth_idx_check_activate_response(card, channel, iob);
2158 if (rc)
2159 goto out;
2160
2161 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2162 if ((peer_level & ~0x0100) !=
2163 qeth_peer_func_level(card->info.func_level)) {
2164 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
2165 CCW_DEVID(channel->ccwdev),
2166 card->info.func_level, peer_level);
2167 rc = -EINVAL;
2168 }
2169
2170out:
2171 qeth_notify_cmd(iob, rc);
2172 qeth_put_cmd(iob);
2173}
2174
2175static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
2176 struct qeth_cmd_buffer *iob)
2177{
2178 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
2179 u8 port = ((u8)card->dev->dev_port) | 0x80;
2180 struct ccw1 *ccw = __ccw_from_cmd(iob);
2181
2182 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
2183 iob->data);
2184 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
2185 iob->finalize = qeth_idx_finalize_cmd;
2186
2187 port |= QETH_IDX_ACT_INVAL_FRAME;
2188 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
2189 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2190 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
2191 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
2192 &card->info.func_level, 2);
2193 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &card->info.ddev_devno, 2);
2194 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
2195}
2196
2197static int qeth_idx_activate_read_channel(struct qeth_card *card)
2198{
2199 struct qeth_channel *channel = &card->read;
2200 struct qeth_cmd_buffer *iob;
2201 int rc;
2202
2203 QETH_CARD_TEXT(card, 2, "idxread");
2204
2205 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2206 if (!iob)
2207 return -ENOMEM;
2208
2209 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2210 qeth_idx_setup_activate_cmd(card, iob);
2211 iob->callback = qeth_idx_activate_read_channel_cb;
2212
2213 rc = qeth_send_control_data(card, iob, NULL, NULL);
2214 if (rc)
2215 return rc;
2216
2217 channel->state = CH_STATE_UP;
2218 return 0;
2219}
2220
2221static int qeth_idx_activate_write_channel(struct qeth_card *card)
2222{
2223 struct qeth_channel *channel = &card->write;
2224 struct qeth_cmd_buffer *iob;
2225 int rc;
2226
2227 QETH_CARD_TEXT(card, 2, "idxwrite");
2228
2229 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2230 if (!iob)
2231 return -ENOMEM;
2232
2233 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2234 qeth_idx_setup_activate_cmd(card, iob);
2235 iob->callback = qeth_idx_activate_write_channel_cb;
2236
2237 rc = qeth_send_control_data(card, iob, NULL, NULL);
2238 if (rc)
2239 return rc;
2240
2241 channel->state = CH_STATE_UP;
2242 return 0;
2243}
2244
2245static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2246 unsigned long data)
2247{
2248 struct qeth_cmd_buffer *iob;
2249
2250 QETH_CARD_TEXT(card, 2, "cmenblcb");
2251
2252 iob = (struct qeth_cmd_buffer *) data;
2253 memcpy(&card->token.cm_filter_r,
2254 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2255 QETH_MPC_TOKEN_LENGTH);
2256 return 0;
2257}
2258
2259static int qeth_cm_enable(struct qeth_card *card)
2260{
2261 struct qeth_cmd_buffer *iob;
2262
2263 QETH_CARD_TEXT(card, 2, "cmenable");
2264
2265 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2266 if (!iob)
2267 return -ENOMEM;
2268
2269 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2270 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2271 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2272 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2273
2274 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2275}
2276
2277static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2278 unsigned long data)
2279{
2280 struct qeth_cmd_buffer *iob;
2281
2282 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2283
2284 iob = (struct qeth_cmd_buffer *) data;
2285 memcpy(&card->token.cm_connection_r,
2286 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2287 QETH_MPC_TOKEN_LENGTH);
2288 return 0;
2289}
2290
2291static int qeth_cm_setup(struct qeth_card *card)
2292{
2293 struct qeth_cmd_buffer *iob;
2294
2295 QETH_CARD_TEXT(card, 2, "cmsetup");
2296
2297 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2298 if (!iob)
2299 return -ENOMEM;
2300
2301 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2302 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2303 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2304 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2305 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2306 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2307 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2308}
2309
2310static bool qeth_is_supported_link_type(struct qeth_card *card, u8 link_type)
2311{
2312 if (link_type == QETH_LINK_TYPE_LANE_TR ||
2313 link_type == QETH_LINK_TYPE_HSTR) {
2314 dev_err(&card->gdev->dev, "Unsupported Token Ring device\n");
2315 return false;
2316 }
2317
2318 return true;
2319}
2320
2321static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2322{
2323 struct net_device *dev = card->dev;
2324 unsigned int new_mtu;
2325
2326 if (!max_mtu) {
2327
2328 if (IS_IQD(card))
2329 return -EINVAL;
2330
2331 max_mtu = ETH_MAX_MTU;
2332 }
2333
2334 rtnl_lock();
2335 if (IS_IQD(card)) {
2336
2337 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2338
2339
2340 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2341 if (dev->max_mtu && dev->max_mtu != max_mtu)
2342 qeth_free_qdio_queues(card);
2343 } else {
2344 if (dev->mtu)
2345 new_mtu = dev->mtu;
2346
2347 else if (IS_LAYER2(card))
2348 new_mtu = ETH_DATA_LEN;
2349 else
2350 new_mtu = ETH_DATA_LEN - 8;
2351 }
2352
2353 dev->max_mtu = max_mtu;
2354 dev->mtu = min(new_mtu, max_mtu);
2355 rtnl_unlock();
2356 return 0;
2357}
2358
2359static int qeth_get_mtu_outof_framesize(int framesize)
2360{
2361 switch (framesize) {
2362 case 0x4000:
2363 return 8192;
2364 case 0x6000:
2365 return 16384;
2366 case 0xa000:
2367 return 32768;
2368 case 0xffff:
2369 return 57344;
2370 default:
2371 return 0;
2372 }
2373}
2374
2375static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2376 unsigned long data)
2377{
2378 __u16 mtu, framesize;
2379 __u16 len;
2380 struct qeth_cmd_buffer *iob;
2381 u8 link_type = 0;
2382
2383 QETH_CARD_TEXT(card, 2, "ulpenacb");
2384
2385 iob = (struct qeth_cmd_buffer *) data;
2386 memcpy(&card->token.ulp_filter_r,
2387 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2388 QETH_MPC_TOKEN_LENGTH);
2389 if (IS_IQD(card)) {
2390 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2391 mtu = qeth_get_mtu_outof_framesize(framesize);
2392 } else {
2393 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2394 }
2395 *(u16 *)reply->param = mtu;
2396
2397 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2398 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2399 memcpy(&link_type,
2400 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2401 if (!qeth_is_supported_link_type(card, link_type))
2402 return -EPROTONOSUPPORT;
2403 }
2404
2405 card->info.link_type = link_type;
2406 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2407 return 0;
2408}
2409
2410static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2411{
2412 return IS_LAYER2(card) ? QETH_MPC_PROT_L2 : QETH_MPC_PROT_L3;
2413}
2414
2415static int qeth_ulp_enable(struct qeth_card *card)
2416{
2417 u8 prot_type = qeth_mpc_select_prot_type(card);
2418 struct qeth_cmd_buffer *iob;
2419 u16 max_mtu;
2420 int rc;
2421
2422 QETH_CARD_TEXT(card, 2, "ulpenabl");
2423
2424 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2425 if (!iob)
2426 return -ENOMEM;
2427
2428 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2429 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2430 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2431 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2432 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2433 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2434 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2435 if (rc)
2436 return rc;
2437 return qeth_update_max_mtu(card, max_mtu);
2438}
2439
2440static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2441 unsigned long data)
2442{
2443 struct qeth_cmd_buffer *iob;
2444
2445 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2446
2447 iob = (struct qeth_cmd_buffer *) data;
2448 memcpy(&card->token.ulp_connection_r,
2449 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2450 QETH_MPC_TOKEN_LENGTH);
2451 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2452 3)) {
2453 QETH_CARD_TEXT(card, 2, "olmlimit");
2454 dev_err(&card->gdev->dev, "A connection could not be "
2455 "established because of an OLM limit\n");
2456 return -EMLINK;
2457 }
2458 return 0;
2459}
2460
2461static int qeth_ulp_setup(struct qeth_card *card)
2462{
2463 __u16 temp;
2464 struct qeth_cmd_buffer *iob;
2465
2466 QETH_CARD_TEXT(card, 2, "ulpsetup");
2467
2468 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2469 if (!iob)
2470 return -ENOMEM;
2471
2472 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2473 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2474 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2475 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2476 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2477 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2478
2479 memcpy(QETH_ULP_SETUP_CUA(iob->data), &card->info.ddev_devno, 2);
2480 temp = (card->info.cula << 8) + card->info.unit_addr2;
2481 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2482 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2483}
2484
2485static int qeth_alloc_out_buf(struct qeth_qdio_out_q *q, unsigned int bidx,
2486 gfp_t gfp)
2487{
2488 struct qeth_qdio_out_buffer *newbuf;
2489
2490 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, gfp);
2491 if (!newbuf)
2492 return -ENOMEM;
2493
2494 newbuf->buffer = q->qdio_bufs[bidx];
2495 skb_queue_head_init(&newbuf->skb_list);
2496 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2497 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2498 q->bufs[bidx] = newbuf;
2499 return 0;
2500}
2501
2502static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2503{
2504 if (!q)
2505 return;
2506
2507 qeth_drain_output_queue(q, true);
2508 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2509 kfree(q);
2510}
2511
2512static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2513{
2514 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2515 unsigned int i;
2516
2517 if (!q)
2518 return NULL;
2519
2520 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q))
2521 goto err_qdio_bufs;
2522
2523 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
2524 if (qeth_alloc_out_buf(q, i, GFP_KERNEL))
2525 goto err_out_bufs;
2526 }
2527
2528 return q;
2529
2530err_out_bufs:
2531 while (i > 0)
2532 qeth_free_out_buf(q->bufs[--i]);
2533 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2534err_qdio_bufs:
2535 kfree(q);
2536 return NULL;
2537}
2538
2539static void qeth_tx_completion_timer(struct timer_list *timer)
2540{
2541 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2542
2543 napi_schedule(&queue->napi);
2544 QETH_TXQ_STAT_INC(queue, completion_timer);
2545}
2546
2547static int qeth_alloc_qdio_queues(struct qeth_card *card)
2548{
2549 unsigned int i;
2550
2551 QETH_CARD_TEXT(card, 2, "allcqdbf");
2552
2553 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2554 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2555 return 0;
2556
2557
2558 if (qeth_alloc_buffer_pool(card))
2559 goto out_buffer_pool;
2560
2561
2562 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2563 struct qeth_qdio_out_q *queue;
2564
2565 queue = qeth_alloc_output_queue();
2566 if (!queue)
2567 goto out_freeoutq;
2568 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2569 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2570 card->qdio.out_qs[i] = queue;
2571 queue->card = card;
2572 queue->queue_no = i;
2573 INIT_LIST_HEAD(&queue->pending_bufs);
2574 spin_lock_init(&queue->lock);
2575 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2576 if (IS_IQD(card)) {
2577 queue->coalesce_usecs = QETH_TX_COALESCE_USECS;
2578 queue->max_coalesced_frames = QETH_TX_MAX_COALESCED_FRAMES;
2579 queue->rescan_usecs = QETH_TX_TIMER_USECS;
2580 } else {
2581 queue->coalesce_usecs = USEC_PER_SEC;
2582 queue->max_coalesced_frames = 0;
2583 queue->rescan_usecs = 10 * USEC_PER_SEC;
2584 }
2585 queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
2586 }
2587
2588
2589 if (qeth_alloc_cq(card))
2590 goto out_freeoutq;
2591
2592 return 0;
2593
2594out_freeoutq:
2595 while (i > 0) {
2596 qeth_free_output_queue(card->qdio.out_qs[--i]);
2597 card->qdio.out_qs[i] = NULL;
2598 }
2599 qeth_free_buffer_pool(card);
2600out_buffer_pool:
2601 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2602 return -ENOMEM;
2603}
2604
2605static void qeth_free_qdio_queues(struct qeth_card *card)
2606{
2607 int i, j;
2608
2609 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2610 QETH_QDIO_UNINITIALIZED)
2611 return;
2612
2613 qeth_free_cq(card);
2614 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2615 if (card->qdio.in_q->bufs[j].rx_skb) {
2616 consume_skb(card->qdio.in_q->bufs[j].rx_skb);
2617 card->qdio.in_q->bufs[j].rx_skb = NULL;
2618 }
2619 }
2620
2621
2622 qeth_free_buffer_pool(card);
2623
2624 for (i = 0; i < card->qdio.no_out_queues; i++) {
2625 qeth_free_output_queue(card->qdio.out_qs[i]);
2626 card->qdio.out_qs[i] = NULL;
2627 }
2628}
2629
2630static void qeth_fill_qib_parms(struct qeth_card *card,
2631 struct qeth_qib_parms *parms)
2632{
2633 struct qeth_qdio_out_q *queue;
2634 unsigned int i;
2635
2636 parms->pcit_magic[0] = 'P';
2637 parms->pcit_magic[1] = 'C';
2638 parms->pcit_magic[2] = 'I';
2639 parms->pcit_magic[3] = 'T';
2640 ASCEBC(parms->pcit_magic, sizeof(parms->pcit_magic));
2641 parms->pcit_a = QETH_PCI_THRESHOLD_A(card);
2642 parms->pcit_b = QETH_PCI_THRESHOLD_B(card);
2643 parms->pcit_c = QETH_PCI_TIMER_VALUE(card);
2644
2645 parms->blkt_magic[0] = 'B';
2646 parms->blkt_magic[1] = 'L';
2647 parms->blkt_magic[2] = 'K';
2648 parms->blkt_magic[3] = 'T';
2649 ASCEBC(parms->blkt_magic, sizeof(parms->blkt_magic));
2650 parms->blkt_total = card->info.blkt.time_total;
2651 parms->blkt_inter_packet = card->info.blkt.inter_packet;
2652 parms->blkt_inter_packet_jumbo = card->info.blkt.inter_packet_jumbo;
2653
2654
2655 if (qeth_uses_tx_prio_queueing(card) || card->qdio.no_out_queues == 1)
2656 return;
2657
2658 parms->pque_magic[0] = 'P';
2659 parms->pque_magic[1] = 'Q';
2660 parms->pque_magic[2] = 'U';
2661 parms->pque_magic[3] = 'E';
2662 ASCEBC(parms->pque_magic, sizeof(parms->pque_magic));
2663 parms->pque_order = QETH_QIB_PQUE_ORDER_RR;
2664 parms->pque_units = QETH_QIB_PQUE_UNITS_SBAL;
2665
2666 qeth_for_each_output_queue(card, queue, i)
2667 parms->pque_priority[i] = queue->priority;
2668}
2669
2670static int qeth_qdio_activate(struct qeth_card *card)
2671{
2672 QETH_CARD_TEXT(card, 3, "qdioact");
2673 return qdio_activate(CARD_DDEV(card));
2674}
2675
2676static int qeth_dm_act(struct qeth_card *card)
2677{
2678 struct qeth_cmd_buffer *iob;
2679
2680 QETH_CARD_TEXT(card, 2, "dmact");
2681
2682 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2683 if (!iob)
2684 return -ENOMEM;
2685
2686 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2687 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2688 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2689 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2690 return qeth_send_control_data(card, iob, NULL, NULL);
2691}
2692
2693static int qeth_mpc_initialize(struct qeth_card *card)
2694{
2695 int rc;
2696
2697 QETH_CARD_TEXT(card, 2, "mpcinit");
2698
2699 rc = qeth_issue_next_read(card);
2700 if (rc) {
2701 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2702 return rc;
2703 }
2704 rc = qeth_cm_enable(card);
2705 if (rc) {
2706 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2707 return rc;
2708 }
2709 rc = qeth_cm_setup(card);
2710 if (rc) {
2711 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2712 return rc;
2713 }
2714 rc = qeth_ulp_enable(card);
2715 if (rc) {
2716 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2717 return rc;
2718 }
2719 rc = qeth_ulp_setup(card);
2720 if (rc) {
2721 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2722 return rc;
2723 }
2724 rc = qeth_alloc_qdio_queues(card);
2725 if (rc) {
2726 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2727 return rc;
2728 }
2729 rc = qeth_qdio_establish(card);
2730 if (rc) {
2731 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2732 qeth_free_qdio_queues(card);
2733 return rc;
2734 }
2735 rc = qeth_qdio_activate(card);
2736 if (rc) {
2737 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2738 return rc;
2739 }
2740 rc = qeth_dm_act(card);
2741 if (rc) {
2742 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2743 return rc;
2744 }
2745
2746 return 0;
2747}
2748
2749static void qeth_print_status_message(struct qeth_card *card)
2750{
2751 switch (card->info.type) {
2752 case QETH_CARD_TYPE_OSD:
2753 case QETH_CARD_TYPE_OSM:
2754 case QETH_CARD_TYPE_OSX:
2755
2756
2757
2758
2759 if (!card->info.mcl_level[0]) {
2760 sprintf(card->info.mcl_level, "%02x%02x",
2761 card->info.mcl_level[2],
2762 card->info.mcl_level[3]);
2763 break;
2764 }
2765 fallthrough;
2766 case QETH_CARD_TYPE_IQD:
2767 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2768 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2769 card->info.mcl_level[0]];
2770 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2771 card->info.mcl_level[1]];
2772 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2773 card->info.mcl_level[2]];
2774 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2775 card->info.mcl_level[3]];
2776 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2777 }
2778 break;
2779 default:
2780 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2781 }
2782 dev_info(&card->gdev->dev,
2783 "Device is a%s card%s%s%s\nwith link type %s.\n",
2784 qeth_get_cardname(card),
2785 (card->info.mcl_level[0]) ? " (level: " : "",
2786 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2787 (card->info.mcl_level[0]) ? ")" : "",
2788 qeth_get_cardname_short(card));
2789}
2790
2791static void qeth_initialize_working_pool_list(struct qeth_card *card)
2792{
2793 struct qeth_buffer_pool_entry *entry;
2794
2795 QETH_CARD_TEXT(card, 5, "inwrklst");
2796
2797 list_for_each_entry(entry,
2798 &card->qdio.init_pool.entry_list, init_list) {
2799 qeth_put_buffer_pool_entry(card, entry);
2800 }
2801}
2802
2803static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2804 struct qeth_card *card)
2805{
2806 struct qeth_buffer_pool_entry *entry;
2807 int i, free;
2808
2809 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2810 return NULL;
2811
2812 list_for_each_entry(entry, &card->qdio.in_buf_pool.entry_list, list) {
2813 free = 1;
2814 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2815 if (page_count(entry->elements[i]) > 1) {
2816 free = 0;
2817 break;
2818 }
2819 }
2820 if (free) {
2821 list_del_init(&entry->list);
2822 return entry;
2823 }
2824 }
2825
2826
2827 entry = list_first_entry(&card->qdio.in_buf_pool.entry_list,
2828 struct qeth_buffer_pool_entry, list);
2829 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2830 if (page_count(entry->elements[i]) > 1) {
2831 struct page *page = dev_alloc_page();
2832
2833 if (!page)
2834 return NULL;
2835
2836 __free_page(entry->elements[i]);
2837 entry->elements[i] = page;
2838 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2839 }
2840 }
2841 list_del_init(&entry->list);
2842 return entry;
2843}
2844
2845static int qeth_init_input_buffer(struct qeth_card *card,
2846 struct qeth_qdio_buffer *buf)
2847{
2848 struct qeth_buffer_pool_entry *pool_entry = buf->pool_entry;
2849 int i;
2850
2851 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2852 buf->rx_skb = netdev_alloc_skb(card->dev,
2853 ETH_HLEN +
2854 sizeof(struct ipv6hdr));
2855 if (!buf->rx_skb)
2856 return -ENOMEM;
2857 }
2858
2859 if (!pool_entry) {
2860 pool_entry = qeth_find_free_buffer_pool_entry(card);
2861 if (!pool_entry)
2862 return -ENOBUFS;
2863
2864 buf->pool_entry = pool_entry;
2865 }
2866
2867
2868
2869
2870
2871
2872
2873 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2874 buf->buffer->element[i].length = PAGE_SIZE;
2875 buf->buffer->element[i].addr =
2876 page_to_phys(pool_entry->elements[i]);
2877 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2878 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2879 else
2880 buf->buffer->element[i].eflags = 0;
2881 buf->buffer->element[i].sflags = 0;
2882 }
2883 return 0;
2884}
2885
2886static unsigned int qeth_tx_select_bulk_max(struct qeth_card *card,
2887 struct qeth_qdio_out_q *queue)
2888{
2889 if (!IS_IQD(card) ||
2890 qeth_iqd_is_mcast_queue(card, queue) ||
2891 card->options.cq == QETH_CQ_ENABLED ||
2892 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd))
2893 return 1;
2894
2895 return card->ssqd.mmwc ? card->ssqd.mmwc : 1;
2896}
2897
2898static int qeth_init_qdio_queues(struct qeth_card *card)
2899{
2900 unsigned int rx_bufs = card->qdio.in_buf_pool.buf_count;
2901 unsigned int i;
2902 int rc;
2903
2904 QETH_CARD_TEXT(card, 2, "initqdqs");
2905
2906
2907 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2908 memset(&card->rx, 0, sizeof(struct qeth_rx));
2909
2910 qeth_initialize_working_pool_list(card);
2911
2912 for (i = 0; i < rx_bufs; i++) {
2913 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2914 if (rc)
2915 return rc;
2916 }
2917
2918 card->qdio.in_q->next_buf_to_init = QDIO_BUFNR(rx_bufs);
2919 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0, 0, rx_bufs);
2920 if (rc) {
2921 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2922 return rc;
2923 }
2924
2925
2926 rc = qeth_cq_init(card);
2927 if (rc) {
2928 return rc;
2929 }
2930
2931
2932 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2933 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2934
2935 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2936 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2937 queue->next_buf_to_fill = 0;
2938 queue->do_pack = 0;
2939 queue->prev_hdr = NULL;
2940 queue->coalesced_frames = 0;
2941 queue->bulk_start = 0;
2942 queue->bulk_count = 0;
2943 queue->bulk_max = qeth_tx_select_bulk_max(card, queue);
2944 atomic_set(&queue->used_buffers, 0);
2945 atomic_set(&queue->set_pci_flags_count, 0);
2946 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2947 }
2948 return 0;
2949}
2950
2951static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2952 struct qeth_cmd_buffer *iob)
2953{
2954 qeth_mpc_finalize_cmd(card, iob);
2955
2956
2957 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
2958}
2959
2960static void qeth_prepare_ipa_cmd(struct qeth_card *card,
2961 struct qeth_cmd_buffer *iob, u16 cmd_length)
2962{
2963 u8 prot_type = qeth_mpc_select_prot_type(card);
2964 u16 total_length = iob->length;
2965
2966 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2967 iob->data);
2968 iob->finalize = qeth_ipa_finalize_cmd;
2969
2970 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2971 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2972 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2973 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2974 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2975 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2976 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2977 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2978}
2979
2980static bool qeth_ipa_match_reply(struct qeth_cmd_buffer *iob,
2981 struct qeth_cmd_buffer *reply)
2982{
2983 struct qeth_ipa_cmd *ipa_reply = __ipa_reply(reply);
2984
2985 return ipa_reply && (__ipa_cmd(iob)->hdr.seqno == ipa_reply->hdr.seqno);
2986}
2987
2988struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2989 enum qeth_ipa_cmds cmd_code,
2990 enum qeth_prot_versions prot,
2991 unsigned int data_length)
2992{
2993 struct qeth_cmd_buffer *iob;
2994 struct qeth_ipacmd_hdr *hdr;
2995
2996 data_length += offsetof(struct qeth_ipa_cmd, data);
2997 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2998 QETH_IPA_TIMEOUT);
2999 if (!iob)
3000 return NULL;
3001
3002 qeth_prepare_ipa_cmd(card, iob, data_length);
3003 iob->match = qeth_ipa_match_reply;
3004
3005 hdr = &__ipa_cmd(iob)->hdr;
3006 hdr->command = cmd_code;
3007 hdr->initiator = IPA_CMD_INITIATOR_HOST;
3008
3009 hdr->adapter_type = QETH_LINK_TYPE_FAST_ETH;
3010 hdr->rel_adapter_no = (u8) card->dev->dev_port;
3011 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
3012 hdr->param_count = 1;
3013 hdr->prot_version = prot;
3014 return iob;
3015}
3016EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
3017
3018static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
3019 struct qeth_reply *reply, unsigned long data)
3020{
3021 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3022
3023 return (cmd->hdr.return_code) ? -EIO : 0;
3024}
3025
3026
3027
3028
3029
3030
3031
3032int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
3033 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
3034 unsigned long),
3035 void *reply_param)
3036{
3037 int rc;
3038
3039 QETH_CARD_TEXT(card, 4, "sendipa");
3040
3041 if (card->read_or_write_problem) {
3042 qeth_put_cmd(iob);
3043 return -EIO;
3044 }
3045
3046 if (reply_cb == NULL)
3047 reply_cb = qeth_send_ipa_cmd_cb;
3048 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
3049 if (rc == -ETIME) {
3050 qeth_clear_ipacmd_list(card);
3051 qeth_schedule_recovery(card);
3052 }
3053 return rc;
3054}
3055EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3056
3057static int qeth_send_startlan_cb(struct qeth_card *card,
3058 struct qeth_reply *reply, unsigned long data)
3059{
3060 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3061
3062 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
3063 return -ENETDOWN;
3064
3065 return (cmd->hdr.return_code) ? -EIO : 0;
3066}
3067
3068static int qeth_send_startlan(struct qeth_card *card)
3069{
3070 struct qeth_cmd_buffer *iob;
3071
3072 QETH_CARD_TEXT(card, 2, "strtlan");
3073
3074 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
3075 if (!iob)
3076 return -ENOMEM;
3077 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
3078}
3079
3080static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3081{
3082 if (!cmd->hdr.return_code)
3083 cmd->hdr.return_code =
3084 cmd->data.setadapterparms.hdr.return_code;
3085 return cmd->hdr.return_code;
3086}
3087
3088static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3089 struct qeth_reply *reply, unsigned long data)
3090{
3091 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3092 struct qeth_query_cmds_supp *query_cmd;
3093
3094 QETH_CARD_TEXT(card, 3, "quyadpcb");
3095 if (qeth_setadpparms_inspect_rc(cmd))
3096 return -EIO;
3097
3098 query_cmd = &cmd->data.setadapterparms.data.query_cmds_supp;
3099 if (query_cmd->lan_type & 0x7f) {
3100 if (!qeth_is_supported_link_type(card, query_cmd->lan_type))
3101 return -EPROTONOSUPPORT;
3102
3103 card->info.link_type = query_cmd->lan_type;
3104 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
3105 }
3106
3107 card->options.adp.supported = query_cmd->supported_cmds;
3108 return 0;
3109}
3110
3111static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3112 enum qeth_ipa_setadp_cmd adp_cmd,
3113 unsigned int data_length)
3114{
3115 struct qeth_ipacmd_setadpparms_hdr *hdr;
3116 struct qeth_cmd_buffer *iob;
3117
3118 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
3119 data_length +
3120 offsetof(struct qeth_ipacmd_setadpparms,
3121 data));
3122 if (!iob)
3123 return NULL;
3124
3125 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
3126 hdr->cmdlength = sizeof(*hdr) + data_length;
3127 hdr->command_code = adp_cmd;
3128 hdr->used_total = 1;
3129 hdr->seq_no = 1;
3130 return iob;
3131}
3132
3133static int qeth_query_setadapterparms(struct qeth_card *card)
3134{
3135 int rc;
3136 struct qeth_cmd_buffer *iob;
3137
3138 QETH_CARD_TEXT(card, 3, "queryadp");
3139 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3140 SETADP_DATA_SIZEOF(query_cmds_supp));
3141 if (!iob)
3142 return -ENOMEM;
3143 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3144 return rc;
3145}
3146
3147static int qeth_query_ipassists_cb(struct qeth_card *card,
3148 struct qeth_reply *reply, unsigned long data)
3149{
3150 struct qeth_ipa_cmd *cmd;
3151
3152 QETH_CARD_TEXT(card, 2, "qipasscb");
3153
3154 cmd = (struct qeth_ipa_cmd *) data;
3155
3156 switch (cmd->hdr.return_code) {
3157 case IPA_RC_SUCCESS:
3158 break;
3159 case IPA_RC_NOTSUPP:
3160 case IPA_RC_L2_UNSUPPORTED_CMD:
3161 QETH_CARD_TEXT(card, 2, "ipaunsup");
3162 card->options.ipa4.supported |= IPA_SETADAPTERPARMS;
3163 card->options.ipa6.supported |= IPA_SETADAPTERPARMS;
3164 return -EOPNOTSUPP;
3165 default:
3166 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
3167 CARD_DEVID(card), cmd->hdr.return_code);
3168 return -EIO;
3169 }
3170
3171 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
3172 card->options.ipa4 = cmd->hdr.assists;
3173 else if (cmd->hdr.prot_version == QETH_PROT_IPV6)
3174 card->options.ipa6 = cmd->hdr.assists;
3175 else
3176 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
3177 CARD_DEVID(card));
3178 return 0;
3179}
3180
3181static int qeth_query_ipassists(struct qeth_card *card,
3182 enum qeth_prot_versions prot)
3183{
3184 int rc;
3185 struct qeth_cmd_buffer *iob;
3186
3187 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
3188 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
3189 if (!iob)
3190 return -ENOMEM;
3191 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3192 return rc;
3193}
3194
3195static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3196 struct qeth_reply *reply, unsigned long data)
3197{
3198 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3199 struct qeth_query_switch_attributes *attrs;
3200 struct qeth_switch_info *sw_info;
3201
3202 QETH_CARD_TEXT(card, 2, "qswiatcb");
3203 if (qeth_setadpparms_inspect_rc(cmd))
3204 return -EIO;
3205
3206 sw_info = (struct qeth_switch_info *)reply->param;
3207 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3208 sw_info->capabilities = attrs->capabilities;
3209 sw_info->settings = attrs->settings;
3210 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3211 sw_info->settings);
3212 return 0;
3213}
3214
3215int qeth_query_switch_attributes(struct qeth_card *card,
3216 struct qeth_switch_info *sw_info)
3217{
3218 struct qeth_cmd_buffer *iob;
3219
3220 QETH_CARD_TEXT(card, 2, "qswiattr");
3221 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3222 return -EOPNOTSUPP;
3223 if (!netif_carrier_ok(card->dev))
3224 return -ENOMEDIUM;
3225 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
3226 if (!iob)
3227 return -ENOMEM;
3228 return qeth_send_ipa_cmd(card, iob,
3229 qeth_query_switch_attributes_cb, sw_info);
3230}
3231
3232struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
3233 enum qeth_diags_cmds sub_cmd,
3234 unsigned int data_length)
3235{
3236 struct qeth_ipacmd_diagass *cmd;
3237 struct qeth_cmd_buffer *iob;
3238
3239 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
3240 DIAG_HDR_LEN + data_length);
3241 if (!iob)
3242 return NULL;
3243
3244 cmd = &__ipa_cmd(iob)->data.diagass;
3245 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3246 cmd->subcmd = sub_cmd;
3247 return iob;
3248}
3249EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3250
3251static int qeth_query_setdiagass_cb(struct qeth_card *card,
3252 struct qeth_reply *reply, unsigned long data)
3253{
3254 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3255 u16 rc = cmd->hdr.return_code;
3256
3257 if (rc) {
3258 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3259 return -EIO;
3260 }
3261
3262 card->info.diagass_support = cmd->data.diagass.ext;
3263 return 0;
3264}
3265
3266static int qeth_query_setdiagass(struct qeth_card *card)
3267{
3268 struct qeth_cmd_buffer *iob;
3269
3270 QETH_CARD_TEXT(card, 2, "qdiagass");
3271 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3272 if (!iob)
3273 return -ENOMEM;
3274 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3275}
3276
3277static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3278{
3279 unsigned long info = get_zeroed_page(GFP_KERNEL);
3280 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3281 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3282 struct ccw_dev_id ccwid;
3283 int level;
3284
3285 tid->chpid = card->info.chpid;
3286 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3287 tid->ssid = ccwid.ssid;
3288 tid->devno = ccwid.devno;
3289 if (!info)
3290 return;
3291 level = stsi(NULL, 0, 0, 0);
3292 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3293 tid->lparnr = info222->lpar_number;
3294 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3295 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3296 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3297 }
3298 free_page(info);
3299}
3300
3301static int qeth_hw_trap_cb(struct qeth_card *card,
3302 struct qeth_reply *reply, unsigned long data)
3303{
3304 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3305 u16 rc = cmd->hdr.return_code;
3306
3307 if (rc) {
3308 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3309 return -EIO;
3310 }
3311 return 0;
3312}
3313
3314int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3315{
3316 struct qeth_cmd_buffer *iob;
3317 struct qeth_ipa_cmd *cmd;
3318
3319 QETH_CARD_TEXT(card, 2, "diagtrap");
3320 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3321 if (!iob)
3322 return -ENOMEM;
3323 cmd = __ipa_cmd(iob);
3324 cmd->data.diagass.type = 1;
3325 cmd->data.diagass.action = action;
3326 switch (action) {
3327 case QETH_DIAGS_TRAP_ARM:
3328 cmd->data.diagass.options = 0x0003;
3329 cmd->data.diagass.ext = 0x00010000 +
3330 sizeof(struct qeth_trap_id);
3331 qeth_get_trap_id(card,
3332 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3333 break;
3334 case QETH_DIAGS_TRAP_DISARM:
3335 cmd->data.diagass.options = 0x0001;
3336 break;
3337 case QETH_DIAGS_TRAP_CAPTURE:
3338 break;
3339 }
3340 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3341}
3342
3343static int qeth_check_qdio_errors(struct qeth_card *card,
3344 struct qdio_buffer *buf,
3345 unsigned int qdio_error,
3346 const char *dbftext)
3347{
3348 if (qdio_error) {
3349 QETH_CARD_TEXT(card, 2, dbftext);
3350 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3351 buf->element[15].sflags);
3352 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3353 buf->element[14].sflags);
3354 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3355 if ((buf->element[15].sflags) == 0x12) {
3356 QETH_CARD_STAT_INC(card, rx_fifo_errors);
3357 return 0;
3358 } else
3359 return 1;
3360 }
3361 return 0;
3362}
3363
3364static unsigned int qeth_rx_refill_queue(struct qeth_card *card,
3365 unsigned int count)
3366{
3367 struct qeth_qdio_q *queue = card->qdio.in_q;
3368 struct list_head *lh;
3369 int i;
3370 int rc;
3371 int newcount = 0;
3372
3373
3374 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3375 for (i = queue->next_buf_to_init;
3376 i < queue->next_buf_to_init + count; ++i) {
3377 if (qeth_init_input_buffer(card,
3378 &queue->bufs[QDIO_BUFNR(i)])) {
3379 break;
3380 } else {
3381 newcount++;
3382 }
3383 }
3384
3385 if (newcount < count) {
3386
3387
3388 atomic_set(&card->force_alloc_skb, 3);
3389 count = newcount;
3390 } else {
3391 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3392 }
3393
3394 if (!count) {
3395 i = 0;
3396 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3397 i++;
3398 if (i == card->qdio.in_buf_pool.buf_count) {
3399 QETH_CARD_TEXT(card, 2, "qsarbw");
3400 schedule_delayed_work(
3401 &card->buffer_reclaim_work,
3402 QETH_RECLAIM_WORK_TIME);
3403 }
3404 return 0;
3405 }
3406
3407 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), 0,
3408 queue->next_buf_to_init,
3409 count);
3410 if (rc) {
3411 QETH_CARD_TEXT(card, 2, "qinberr");
3412 }
3413 queue->next_buf_to_init = QDIO_BUFNR(queue->next_buf_to_init +
3414 count);
3415 return count;
3416 }
3417
3418 return 0;
3419}
3420
3421static void qeth_buffer_reclaim_work(struct work_struct *work)
3422{
3423 struct qeth_card *card = container_of(to_delayed_work(work),
3424 struct qeth_card,
3425 buffer_reclaim_work);
3426
3427 local_bh_disable();
3428 napi_schedule(&card->napi);
3429
3430 local_bh_enable();
3431}
3432
3433static void qeth_handle_send_error(struct qeth_card *card,
3434 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3435{
3436 int sbalf15 = buffer->buffer->element[15].sflags;
3437
3438 QETH_CARD_TEXT(card, 6, "hdsnderr");
3439 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3440
3441 if (!qdio_err)
3442 return;
3443
3444 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3445 return;
3446
3447 QETH_CARD_TEXT(card, 1, "lnkfail");
3448 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3449 (u16)qdio_err, (u8)sbalf15);
3450}
3451
3452
3453
3454
3455
3456
3457
3458static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3459{
3460 struct qeth_qdio_out_buffer *buffer;
3461
3462 buffer = queue->bufs[queue->next_buf_to_fill];
3463 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3464 (buffer->next_element_to_fill > 0)) {
3465
3466 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3467 queue->next_buf_to_fill =
3468 QDIO_BUFNR(queue->next_buf_to_fill + 1);
3469 return 1;
3470 }
3471 return 0;
3472}
3473
3474
3475
3476
3477
3478static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3479{
3480 if (!queue->do_pack) {
3481 if (atomic_read(&queue->used_buffers)
3482 >= QETH_HIGH_WATERMARK_PACK){
3483
3484 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3485 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3486 queue->do_pack = 1;
3487 }
3488 }
3489}
3490
3491
3492
3493
3494
3495
3496
3497static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3498{
3499 if (queue->do_pack) {
3500 if (atomic_read(&queue->used_buffers)
3501 <= QETH_LOW_WATERMARK_PACK) {
3502
3503 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3504 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3505 queue->do_pack = 0;
3506 return qeth_prep_flush_pack_buffer(queue);
3507 }
3508 }
3509 return 0;
3510}
3511
3512static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3513 int count)
3514{
3515 struct qeth_qdio_out_buffer *buf = queue->bufs[index];
3516 struct qeth_card *card = queue->card;
3517 unsigned int frames, usecs;
3518 struct qaob *aob = NULL;
3519 int rc;
3520 int i;
3521
3522 for (i = index; i < index + count; ++i) {
3523 unsigned int bidx = QDIO_BUFNR(i);
3524 struct sk_buff *skb;
3525
3526 buf = queue->bufs[bidx];
3527 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3528 SBAL_EFLAGS_LAST_ENTRY;
3529 queue->coalesced_frames += buf->frames;
3530
3531 if (IS_IQD(card)) {
3532 skb_queue_walk(&buf->skb_list, skb)
3533 skb_tx_timestamp(skb);
3534 }
3535 }
3536
3537 if (IS_IQD(card)) {
3538 if (card->options.cq == QETH_CQ_ENABLED &&
3539 !qeth_iqd_is_mcast_queue(card, queue) &&
3540 count == 1) {
3541 if (!buf->aob)
3542 buf->aob = kmem_cache_zalloc(qeth_qaob_cache,
3543 GFP_ATOMIC);
3544 if (buf->aob) {
3545 struct qeth_qaob_priv1 *priv;
3546
3547 aob = buf->aob;
3548 priv = (struct qeth_qaob_priv1 *)&aob->user1;
3549 priv->state = QETH_QAOB_ISSUED;
3550 priv->queue_no = queue->queue_no;
3551 }
3552 }
3553 } else {
3554 if (!queue->do_pack) {
3555 if ((atomic_read(&queue->used_buffers) >=
3556 (QETH_HIGH_WATERMARK_PACK -
3557 QETH_WATERMARK_PACK_FUZZ)) &&
3558 !atomic_read(&queue->set_pci_flags_count)) {
3559
3560
3561 atomic_inc(&queue->set_pci_flags_count);
3562 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3563 }
3564 } else {
3565 if (!atomic_read(&queue->set_pci_flags_count)) {
3566
3567
3568
3569
3570
3571
3572
3573
3574 atomic_inc(&queue->set_pci_flags_count);
3575 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3576 }
3577 }
3578 }
3579
3580 QETH_TXQ_STAT_INC(queue, doorbell);
3581 rc = qdio_add_bufs_to_output_queue(CARD_DDEV(card), queue->queue_no,
3582 index, count, aob);
3583
3584 switch (rc) {
3585 case 0:
3586 case -ENOBUFS:
3587
3588
3589
3590 frames = READ_ONCE(queue->max_coalesced_frames);
3591 usecs = READ_ONCE(queue->coalesce_usecs);
3592
3593 if (frames && queue->coalesced_frames >= frames) {
3594 napi_schedule(&queue->napi);
3595 queue->coalesced_frames = 0;
3596 QETH_TXQ_STAT_INC(queue, coal_frames);
3597 } else if (qeth_use_tx_irqs(card) &&
3598 atomic_read(&queue->used_buffers) >= 32) {
3599
3600 napi_schedule(&queue->napi);
3601 QETH_TXQ_STAT_INC(queue, coal_frames);
3602 } else if (usecs) {
3603 qeth_tx_arm_timer(queue, usecs);
3604 }
3605
3606 break;
3607 default:
3608 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3609 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3610 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3611 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3612 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3613
3614
3615
3616 qeth_schedule_recovery(queue->card);
3617 }
3618}
3619
3620static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3621{
3622 qeth_flush_buffers(queue, queue->bulk_start, queue->bulk_count);
3623
3624 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + queue->bulk_count);
3625 queue->prev_hdr = NULL;
3626 queue->bulk_count = 0;
3627}
3628
3629static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3630{
3631
3632
3633
3634
3635 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3636 !atomic_read(&queue->set_pci_flags_count)) {
3637 unsigned int index, flush_cnt;
3638
3639 spin_lock(&queue->lock);
3640
3641 index = queue->next_buf_to_fill;
3642
3643 flush_cnt = qeth_switch_to_nonpacking_if_needed(queue);
3644 if (!flush_cnt && !atomic_read(&queue->set_pci_flags_count))
3645 flush_cnt = qeth_prep_flush_pack_buffer(queue);
3646
3647 if (flush_cnt) {
3648 qeth_flush_buffers(queue, index, flush_cnt);
3649 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3650 }
3651
3652 spin_unlock(&queue->lock);
3653 }
3654}
3655
3656static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
3657{
3658 struct qeth_card *card = (struct qeth_card *)card_ptr;
3659
3660 napi_schedule_irqoff(&card->napi);
3661}
3662
3663int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3664{
3665 int rc;
3666
3667 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3668 rc = -1;
3669 goto out;
3670 } else {
3671 if (card->options.cq == cq) {
3672 rc = 0;
3673 goto out;
3674 }
3675
3676 qeth_free_qdio_queues(card);
3677 card->options.cq = cq;
3678 rc = 0;
3679 }
3680out:
3681 return rc;
3682
3683}
3684EXPORT_SYMBOL_GPL(qeth_configure_cq);
3685
3686static void qeth_qdio_handle_aob(struct qeth_card *card, struct qaob *aob)
3687{
3688 struct qeth_qaob_priv1 *priv = (struct qeth_qaob_priv1 *)&aob->user1;
3689 unsigned int queue_no = priv->queue_no;
3690
3691 BUILD_BUG_ON(sizeof(*priv) > ARRAY_SIZE(aob->user1));
3692
3693 if (xchg(&priv->state, QETH_QAOB_DONE) == QETH_QAOB_PENDING &&
3694 queue_no < card->qdio.no_out_queues)
3695 napi_schedule(&card->qdio.out_qs[queue_no]->napi);
3696}
3697
3698static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3699 unsigned int queue, int first_element,
3700 int count)
3701{
3702 struct qeth_qdio_q *cq = card->qdio.c_q;
3703 int i;
3704 int rc;
3705
3706 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3707 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3708 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3709
3710 if (qdio_err) {
3711 netif_tx_stop_all_queues(card->dev);
3712 qeth_schedule_recovery(card);
3713 return;
3714 }
3715
3716 for (i = first_element; i < first_element + count; ++i) {
3717 struct qdio_buffer *buffer = cq->qdio_bufs[QDIO_BUFNR(i)];
3718 int e = 0;
3719
3720 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3721 buffer->element[e].addr) {
3722 unsigned long phys_aob_addr = buffer->element[e].addr;
3723
3724 qeth_qdio_handle_aob(card, phys_to_virt(phys_aob_addr));
3725 ++e;
3726 }
3727 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3728 }
3729 rc = qdio_add_bufs_to_input_queue(CARD_DDEV(card), queue,
3730 cq->next_buf_to_init, count);
3731 if (rc) {
3732 dev_warn(&card->gdev->dev,
3733 "QDIO reported an error, rc=%i\n", rc);
3734 QETH_CARD_TEXT(card, 2, "qcqherr");
3735 }
3736
3737 cq->next_buf_to_init = QDIO_BUFNR(cq->next_buf_to_init + count);
3738}
3739
3740static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3741 unsigned int qdio_err, int queue,
3742 int first_elem, int count,
3743 unsigned long card_ptr)
3744{
3745 struct qeth_card *card = (struct qeth_card *)card_ptr;
3746
3747 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3748 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3749
3750 if (qdio_err)
3751 qeth_schedule_recovery(card);
3752}
3753
3754static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3755 unsigned int qdio_error, int __queue,
3756 int first_element, int count,
3757 unsigned long card_ptr)
3758{
3759 struct qeth_card *card = (struct qeth_card *) card_ptr;
3760
3761 QETH_CARD_TEXT(card, 2, "achkcond");
3762 netif_tx_stop_all_queues(card->dev);
3763 qeth_schedule_recovery(card);
3764}
3765
3766
3767
3768
3769static int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3770{
3771 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3772 u8 tos;
3773
3774 switch (card->qdio.do_prio_queueing) {
3775 case QETH_PRIO_Q_ING_TOS:
3776 case QETH_PRIO_Q_ING_PREC:
3777 switch (vlan_get_protocol(skb)) {
3778 case htons(ETH_P_IP):
3779 tos = ipv4_get_dsfield(ip_hdr(skb));
3780 break;
3781 case htons(ETH_P_IPV6):
3782 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3783 break;
3784 default:
3785 return card->qdio.default_out_queue;
3786 }
3787 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3788 return ~tos >> 6 & 3;
3789 if (tos & IPTOS_MINCOST)
3790 return 3;
3791 if (tos & IPTOS_RELIABILITY)
3792 return 2;
3793 if (tos & IPTOS_THROUGHPUT)
3794 return 1;
3795 if (tos & IPTOS_LOWDELAY)
3796 return 0;
3797 break;
3798 case QETH_PRIO_Q_ING_SKB:
3799 if (skb->priority > 5)
3800 return 0;
3801 return ~skb->priority >> 1 & 3;
3802 case QETH_PRIO_Q_ING_VLAN:
3803 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3804 return ~ntohs(veth->h_vlan_TCI) >>
3805 (VLAN_PRIO_SHIFT + 1) & 3;
3806 break;
3807 case QETH_PRIO_Q_ING_FIXED:
3808 return card->qdio.default_out_queue;
3809 default:
3810 break;
3811 }
3812 return card->qdio.default_out_queue;
3813}
3814
3815
3816
3817
3818
3819
3820
3821
3822static int qeth_get_elements_for_frags(struct sk_buff *skb)
3823{
3824 int cnt, elements = 0;
3825
3826 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3827 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3828
3829 elements += qeth_get_elements_for_range(
3830 (addr_t)skb_frag_address(frag),
3831 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3832 }
3833 return elements;
3834}
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845static unsigned int qeth_count_elements(struct sk_buff *skb,
3846 unsigned int data_offset)
3847{
3848 unsigned int elements = qeth_get_elements_for_frags(skb);
3849 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3850 addr_t start = (addr_t)skb->data + data_offset;
3851
3852 if (start != end)
3853 elements += qeth_get_elements_for_range(start, end);
3854 return elements;
3855}
3856
3857#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3858 MAX_TCP_HEADER)
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3878 struct sk_buff *skb, struct qeth_hdr **hdr,
3879 unsigned int hdr_len, unsigned int proto_len,
3880 unsigned int *elements)
3881{
3882 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0);
3883 const unsigned int contiguous = proto_len ? proto_len : 1;
3884 const unsigned int max_elements = queue->max_elements;
3885 unsigned int __elements;
3886 addr_t start, end;
3887 bool push_ok;
3888 int rc;
3889
3890check_layout:
3891 start = (addr_t)skb->data - hdr_len;
3892 end = (addr_t)skb->data;
3893
3894 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3895
3896 push_ok = true;
3897
3898 if (skb_is_gso(skb))
3899 __elements = 1 + qeth_count_elements(skb, proto_len);
3900 else
3901 __elements = qeth_count_elements(skb, 0);
3902 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3903
3904 push_ok = true;
3905 __elements = 1 + qeth_count_elements(skb, 0);
3906 } else {
3907
3908 push_ok = false;
3909 __elements = 1 + qeth_count_elements(skb, proto_len);
3910 }
3911
3912
3913 if (__elements > max_elements) {
3914 if (!skb_is_nonlinear(skb)) {
3915
3916 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3917 max_elements, __elements, skb->len);
3918 return -E2BIG;
3919 }
3920
3921 rc = skb_linearize(skb);
3922 if (rc) {
3923 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3924 return rc;
3925 }
3926
3927 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3928
3929 goto check_layout;
3930 }
3931
3932 *elements = __elements;
3933
3934 if (push_ok) {
3935 *hdr = skb_push(skb, hdr_len);
3936 return hdr_len;
3937 }
3938
3939
3940 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3941 return -E2BIG;
3942 *hdr = kmem_cache_alloc(qeth_core_header_cache, gfp);
3943 if (!*hdr)
3944 return -ENOMEM;
3945
3946 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3947 return 0;
3948}
3949
3950static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
3951 struct sk_buff *curr_skb,
3952 struct qeth_hdr *curr_hdr)
3953{
3954 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
3955 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3956
3957 if (!prev_hdr)
3958 return true;
3959
3960
3961 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3962 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3963
3964 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3965 eth_hdr(curr_skb)->h_dest) &&
3966 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3967 }
3968
3969 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3970 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3971}
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3983 struct sk_buff *skb, struct qeth_hdr *hdr,
3984 unsigned int offset, unsigned int hd_len)
3985{
3986 struct qdio_buffer *buffer = buf->buffer;
3987 int element = buf->next_element_to_fill;
3988 int length = skb_headlen(skb) - offset;
3989 char *data = skb->data + offset;
3990 unsigned int elem_length, cnt;
3991 bool is_first_elem = true;
3992
3993 __skb_queue_tail(&buf->skb_list, skb);
3994
3995
3996 if (hd_len) {
3997 is_first_elem = false;
3998
3999 buffer->element[element].addr = virt_to_phys(hdr);
4000 buffer->element[element].length = hd_len;
4001 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4002
4003
4004 if ((void *)hdr != skb->data)
4005 __set_bit(element, buf->from_kmem_cache);
4006
4007 else if (length > 0 && !PAGE_ALIGNED(data) &&
4008 (data == (char *)hdr + hd_len))
4009 buffer->element[element].eflags |=
4010 SBAL_EFLAGS_CONTIGUOUS;
4011
4012 element++;
4013 }
4014
4015
4016 while (length > 0) {
4017 elem_length = min_t(unsigned int, length,
4018 PAGE_SIZE - offset_in_page(data));
4019
4020 buffer->element[element].addr = virt_to_phys(data);
4021 buffer->element[element].length = elem_length;
4022 length -= elem_length;
4023 if (is_first_elem) {
4024 is_first_elem = false;
4025 if (length || skb_is_nonlinear(skb))
4026
4027 buffer->element[element].eflags =
4028 SBAL_EFLAGS_FIRST_FRAG;
4029 else
4030 buffer->element[element].eflags = 0;
4031 } else {
4032 buffer->element[element].eflags =
4033 SBAL_EFLAGS_MIDDLE_FRAG;
4034 }
4035
4036 data += elem_length;
4037 element++;
4038 }
4039
4040
4041 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4042 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4043
4044 data = skb_frag_address(frag);
4045 length = skb_frag_size(frag);
4046 while (length > 0) {
4047 elem_length = min_t(unsigned int, length,
4048 PAGE_SIZE - offset_in_page(data));
4049
4050 buffer->element[element].addr = virt_to_phys(data);
4051 buffer->element[element].length = elem_length;
4052 buffer->element[element].eflags =
4053 SBAL_EFLAGS_MIDDLE_FRAG;
4054
4055 length -= elem_length;
4056 data += elem_length;
4057 element++;
4058 }
4059 }
4060
4061 if (buffer->element[element - 1].eflags)
4062 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4063 buf->next_element_to_fill = element;
4064 return element;
4065}
4066
4067static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4068 struct sk_buff *skb, unsigned int elements,
4069 struct qeth_hdr *hdr, unsigned int offset,
4070 unsigned int hd_len)
4071{
4072 unsigned int bytes = qdisc_pkt_len(skb);
4073 struct qeth_qdio_out_buffer *buffer;
4074 unsigned int next_element;
4075 struct netdev_queue *txq;
4076 bool stopped = false;
4077 bool flush;
4078
4079 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start + queue->bulk_count)];
4080 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4081
4082
4083
4084
4085 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4086 return -EBUSY;
4087
4088 flush = !qeth_iqd_may_bulk(queue, skb, hdr);
4089
4090 if (flush ||
4091 (buffer->next_element_to_fill + elements > queue->max_elements)) {
4092 if (buffer->next_element_to_fill > 0) {
4093 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4094 queue->bulk_count++;
4095 }
4096
4097 if (queue->bulk_count >= queue->bulk_max)
4098 flush = true;
4099
4100 if (flush)
4101 qeth_flush_queue(queue);
4102
4103 buffer = queue->bufs[QDIO_BUFNR(queue->bulk_start +
4104 queue->bulk_count)];
4105
4106
4107 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4108 return -EBUSY;
4109 }
4110
4111 if (buffer->next_element_to_fill == 0 &&
4112 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4113
4114
4115
4116 QETH_TXQ_STAT_INC(queue, stopped);
4117 netif_tx_stop_queue(txq);
4118 stopped = true;
4119 }
4120
4121 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4122 buffer->bytes += bytes;
4123 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4124 queue->prev_hdr = hdr;
4125
4126 flush = __netdev_tx_sent_queue(txq, bytes,
4127 !stopped && netdev_xmit_more());
4128
4129 if (flush || next_element >= queue->max_elements) {
4130 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4131 queue->bulk_count++;
4132
4133 if (queue->bulk_count >= queue->bulk_max)
4134 flush = true;
4135
4136 if (flush)
4137 qeth_flush_queue(queue);
4138 }
4139
4140 if (stopped && !qeth_out_queue_is_full(queue))
4141 netif_tx_start_queue(txq);
4142 return 0;
4143}
4144
4145static int qeth_do_send_packet(struct qeth_card *card,
4146 struct qeth_qdio_out_q *queue,
4147 struct sk_buff *skb, struct qeth_hdr *hdr,
4148 unsigned int offset, unsigned int hd_len,
4149 unsigned int elements_needed)
4150{
4151 unsigned int start_index = queue->next_buf_to_fill;
4152 struct qeth_qdio_out_buffer *buffer;
4153 unsigned int next_element;
4154 struct netdev_queue *txq;
4155 bool stopped = false;
4156 int flush_count = 0;
4157 int do_pack = 0;
4158 int rc = 0;
4159
4160 buffer = queue->bufs[queue->next_buf_to_fill];
4161
4162
4163
4164
4165 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4166 return -EBUSY;
4167
4168 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
4169
4170
4171 qeth_switch_to_packing_if_needed(queue);
4172 if (queue->do_pack) {
4173 do_pack = 1;
4174
4175 if (buffer->next_element_to_fill + elements_needed >
4176 queue->max_elements) {
4177
4178 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4179 flush_count++;
4180 queue->next_buf_to_fill =
4181 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4182 buffer = queue->bufs[queue->next_buf_to_fill];
4183
4184
4185 if (atomic_read(&buffer->state) !=
4186 QETH_QDIO_BUF_EMPTY) {
4187 qeth_flush_buffers(queue, start_index,
4188 flush_count);
4189 rc = -EBUSY;
4190 goto out;
4191 }
4192 }
4193 }
4194
4195 if (buffer->next_element_to_fill == 0 &&
4196 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
4197
4198
4199
4200 QETH_TXQ_STAT_INC(queue, stopped);
4201 netif_tx_stop_queue(txq);
4202 stopped = true;
4203 }
4204
4205 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
4206 buffer->bytes += qdisc_pkt_len(skb);
4207 buffer->frames += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
4208
4209 if (queue->do_pack)
4210 QETH_TXQ_STAT_INC(queue, skbs_pack);
4211 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
4212 flush_count++;
4213 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4214 queue->next_buf_to_fill =
4215 QDIO_BUFNR(queue->next_buf_to_fill + 1);
4216 }
4217
4218 if (flush_count)
4219 qeth_flush_buffers(queue, start_index, flush_count);
4220
4221out:
4222 if (do_pack)
4223 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
4224
4225 if (stopped && !qeth_out_queue_is_full(queue))
4226 netif_tx_start_queue(txq);
4227 return rc;
4228}
4229
4230static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4231 unsigned int payload_len, struct sk_buff *skb,
4232 unsigned int proto_len)
4233{
4234 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4235
4236 ext->hdr_tot_len = sizeof(*ext);
4237 ext->imb_hdr_no = 1;
4238 ext->hdr_type = 1;
4239 ext->hdr_version = 1;
4240 ext->hdr_len = 28;
4241 ext->payload_len = payload_len;
4242 ext->mss = skb_shinfo(skb)->gso_size;
4243 ext->dg_hdr_len = proto_len;
4244}
4245
4246int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4247 struct qeth_qdio_out_q *queue, __be16 proto,
4248 void (*fill_header)(struct qeth_qdio_out_q *queue,
4249 struct qeth_hdr *hdr, struct sk_buff *skb,
4250 __be16 proto, unsigned int data_len))
4251{
4252 unsigned int proto_len, hw_hdr_len;
4253 unsigned int frame_len = skb->len;
4254 bool is_tso = skb_is_gso(skb);
4255 unsigned int data_offset = 0;
4256 struct qeth_hdr *hdr = NULL;
4257 unsigned int hd_len = 0;
4258 unsigned int elements;
4259 int push_len, rc;
4260
4261 if (is_tso) {
4262 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4263 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4264 } else {
4265 hw_hdr_len = sizeof(struct qeth_hdr);
4266 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4267 }
4268
4269 rc = skb_cow_head(skb, hw_hdr_len);
4270 if (rc)
4271 return rc;
4272
4273 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4274 &elements);
4275 if (push_len < 0)
4276 return push_len;
4277 if (is_tso || !push_len) {
4278
4279 hd_len = hw_hdr_len + proto_len;
4280 data_offset = push_len + proto_len;
4281 }
4282 memset(hdr, 0, hw_hdr_len);
4283 fill_header(queue, hdr, skb, proto, frame_len);
4284 if (is_tso)
4285 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4286 frame_len - proto_len, skb, proto_len);
4287
4288 if (IS_IQD(card)) {
4289 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4290 hd_len);
4291 } else {
4292
4293 skb_orphan(skb);
4294 spin_lock(&queue->lock);
4295 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4296 hd_len, elements);
4297 spin_unlock(&queue->lock);
4298 }
4299
4300 if (rc && !push_len)
4301 kmem_cache_free(qeth_core_header_cache, hdr);
4302
4303 return rc;
4304}
4305EXPORT_SYMBOL_GPL(qeth_xmit);
4306
4307static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4308 struct qeth_reply *reply, unsigned long data)
4309{
4310 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4311 struct qeth_ipacmd_setadpparms *setparms;
4312
4313 QETH_CARD_TEXT(card, 4, "prmadpcb");
4314
4315 setparms = &(cmd->data.setadapterparms);
4316 if (qeth_setadpparms_inspect_rc(cmd)) {
4317 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4318 setparms->data.mode = SET_PROMISC_MODE_OFF;
4319 }
4320 card->info.promisc_mode = setparms->data.mode;
4321 return (cmd->hdr.return_code) ? -EIO : 0;
4322}
4323
4324void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4325{
4326 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4327 SET_PROMISC_MODE_OFF;
4328 struct qeth_cmd_buffer *iob;
4329 struct qeth_ipa_cmd *cmd;
4330
4331 QETH_CARD_TEXT(card, 4, "setprom");
4332 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4333
4334 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4335 SETADP_DATA_SIZEOF(mode));
4336 if (!iob)
4337 return;
4338 cmd = __ipa_cmd(iob);
4339 cmd->data.setadapterparms.data.mode = mode;
4340 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4341}
4342EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4343
4344static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4345 struct qeth_reply *reply, unsigned long data)
4346{
4347 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4348 struct qeth_ipacmd_setadpparms *adp_cmd;
4349
4350 QETH_CARD_TEXT(card, 4, "chgmaccb");
4351 if (qeth_setadpparms_inspect_rc(cmd))
4352 return -EIO;
4353
4354 adp_cmd = &cmd->data.setadapterparms;
4355 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4356 return -EADDRNOTAVAIL;
4357
4358 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4359 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4360 return -EADDRNOTAVAIL;
4361
4362 eth_hw_addr_set(card->dev, adp_cmd->data.change_addr.addr);
4363 return 0;
4364}
4365
4366int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4367{
4368 int rc;
4369 struct qeth_cmd_buffer *iob;
4370 struct qeth_ipa_cmd *cmd;
4371
4372 QETH_CARD_TEXT(card, 4, "chgmac");
4373
4374 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4375 SETADP_DATA_SIZEOF(change_addr));
4376 if (!iob)
4377 return -ENOMEM;
4378 cmd = __ipa_cmd(iob);
4379 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4380 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4381 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4382 card->dev->dev_addr);
4383 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4384 NULL);
4385 return rc;
4386}
4387EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4388
4389static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4390 struct qeth_reply *reply, unsigned long data)
4391{
4392 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4393 struct qeth_set_access_ctrl *access_ctrl_req;
4394
4395 QETH_CARD_TEXT(card, 4, "setaccb");
4396
4397 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4398 QETH_CARD_TEXT_(card, 2, "rc=%d",
4399 cmd->data.setadapterparms.hdr.return_code);
4400 if (cmd->data.setadapterparms.hdr.return_code !=
4401 SET_ACCESS_CTRL_RC_SUCCESS)
4402 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4403 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4404 cmd->data.setadapterparms.hdr.return_code);
4405 switch (qeth_setadpparms_inspect_rc(cmd)) {
4406 case SET_ACCESS_CTRL_RC_SUCCESS:
4407 if (access_ctrl_req->subcmd_code == ISOLATION_MODE_NONE)
4408 dev_info(&card->gdev->dev,
4409 "QDIO data connection isolation is deactivated\n");
4410 else
4411 dev_info(&card->gdev->dev,
4412 "QDIO data connection isolation is activated\n");
4413 return 0;
4414 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4415 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4416 CARD_DEVID(card));
4417 return 0;
4418 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4419 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4420 CARD_DEVID(card));
4421 return 0;
4422 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4423 dev_err(&card->gdev->dev, "Adapter does not "
4424 "support QDIO data connection isolation\n");
4425 return -EOPNOTSUPP;
4426 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4427 dev_err(&card->gdev->dev,
4428 "Adapter is dedicated. "
4429 "QDIO data connection isolation not supported\n");
4430 return -EOPNOTSUPP;
4431 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4432 dev_err(&card->gdev->dev,
4433 "TSO does not permit QDIO data connection isolation\n");
4434 return -EPERM;
4435 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4436 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4437 "support reflective relay mode\n");
4438 return -EOPNOTSUPP;
4439 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4440 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4441 "enabled at the adjacent switch port");
4442 return -EREMOTEIO;
4443 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4444 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4445 "at the adjacent switch failed\n");
4446
4447 return 0;
4448 default:
4449 return -EIO;
4450 }
4451}
4452
4453int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4454 enum qeth_ipa_isolation_modes mode)
4455{
4456 int rc;
4457 struct qeth_cmd_buffer *iob;
4458 struct qeth_ipa_cmd *cmd;
4459 struct qeth_set_access_ctrl *access_ctrl_req;
4460
4461 QETH_CARD_TEXT(card, 4, "setacctl");
4462
4463 if (!qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4464 dev_err(&card->gdev->dev,
4465 "Adapter does not support QDIO data connection isolation\n");
4466 return -EOPNOTSUPP;
4467 }
4468
4469 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4470 SETADP_DATA_SIZEOF(set_access_ctrl));
4471 if (!iob)
4472 return -ENOMEM;
4473 cmd = __ipa_cmd(iob);
4474 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4475 access_ctrl_req->subcmd_code = mode;
4476
4477 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4478 NULL);
4479 if (rc) {
4480 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4481 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4482 rc, CARD_DEVID(card));
4483 }
4484
4485 return rc;
4486}
4487
4488void qeth_tx_timeout(struct net_device *dev, unsigned int txqueue)
4489{
4490 struct qeth_card *card;
4491
4492 card = dev->ml_priv;
4493 QETH_CARD_TEXT(card, 4, "txtimeo");
4494 qeth_schedule_recovery(card);
4495}
4496EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4497
4498static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4499{
4500 struct qeth_card *card = dev->ml_priv;
4501 int rc = 0;
4502
4503 switch (regnum) {
4504 case MII_BMCR:
4505 rc = BMCR_FULLDPLX;
4506 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4507 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4508 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4509 rc |= BMCR_SPEED100;
4510 break;
4511 case MII_BMSR:
4512 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4513 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4514 BMSR_100BASE4;
4515 break;
4516 case MII_PHYSID1:
4517 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4518 dev->dev_addr[2];
4519 rc = (rc >> 5) & 0xFFFF;
4520 break;
4521 case MII_PHYSID2:
4522 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4523 break;
4524 case MII_ADVERTISE:
4525 rc = ADVERTISE_ALL;
4526 break;
4527 case MII_LPA:
4528 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4529 LPA_100BASE4 | LPA_LPACK;
4530 break;
4531 case MII_EXPANSION:
4532 break;
4533 case MII_DCOUNTER:
4534 break;
4535 case MII_FCSCOUNTER:
4536 break;
4537 case MII_NWAYTEST:
4538 break;
4539 case MII_RERRCOUNTER:
4540 rc = card->stats.rx_length_errors +
4541 card->stats.rx_frame_errors +
4542 card->stats.rx_fifo_errors;
4543 break;
4544 case MII_SREVISION:
4545 break;
4546 case MII_RESV1:
4547 break;
4548 case MII_LBRERROR:
4549 break;
4550 case MII_PHYADDR:
4551 break;
4552 case MII_RESV2:
4553 break;
4554 case MII_TPISTATUS:
4555 break;
4556 case MII_NCONFIG:
4557 break;
4558 default:
4559 break;
4560 }
4561 return rc;
4562}
4563
4564static int qeth_snmp_command_cb(struct qeth_card *card,
4565 struct qeth_reply *reply, unsigned long data)
4566{
4567 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4568 struct qeth_arp_query_info *qinfo = reply->param;
4569 struct qeth_ipacmd_setadpparms *adp_cmd;
4570 unsigned int data_len;
4571 void *snmp_data;
4572
4573 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4574
4575 if (cmd->hdr.return_code) {
4576 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4577 return -EIO;
4578 }
4579 if (cmd->data.setadapterparms.hdr.return_code) {
4580 cmd->hdr.return_code =
4581 cmd->data.setadapterparms.hdr.return_code;
4582 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4583 return -EIO;
4584 }
4585
4586 adp_cmd = &cmd->data.setadapterparms;
4587 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4588 if (adp_cmd->hdr.seq_no == 1) {
4589 snmp_data = &adp_cmd->data.snmp;
4590 } else {
4591 snmp_data = &adp_cmd->data.snmp.request;
4592 data_len -= offsetof(struct qeth_snmp_cmd, request);
4593 }
4594
4595
4596 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4597 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4598 return -ENOSPC;
4599 }
4600 QETH_CARD_TEXT_(card, 4, "snore%i",
4601 cmd->data.setadapterparms.hdr.used_total);
4602 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4603 cmd->data.setadapterparms.hdr.seq_no);
4604
4605 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4606 qinfo->udata_offset += data_len;
4607
4608 if (cmd->data.setadapterparms.hdr.seq_no <
4609 cmd->data.setadapterparms.hdr.used_total)
4610 return 1;
4611 return 0;
4612}
4613
4614static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4615{
4616 struct qeth_snmp_ureq __user *ureq;
4617 struct qeth_cmd_buffer *iob;
4618 unsigned int req_len;
4619 struct qeth_arp_query_info qinfo = {0, };
4620 int rc = 0;
4621
4622 QETH_CARD_TEXT(card, 3, "snmpcmd");
4623
4624 if (IS_VM_NIC(card))
4625 return -EOPNOTSUPP;
4626
4627 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4628 IS_LAYER3(card))
4629 return -EOPNOTSUPP;
4630
4631 ureq = (struct qeth_snmp_ureq __user *) udata;
4632 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4633 get_user(req_len, &ureq->hdr.req_len))
4634 return -EFAULT;
4635
4636
4637 if (req_len > QETH_BUFSIZE)
4638 return -EINVAL;
4639
4640 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4641 if (!iob)
4642 return -ENOMEM;
4643
4644 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4645 &ureq->cmd, req_len)) {
4646 qeth_put_cmd(iob);
4647 return -EFAULT;
4648 }
4649
4650 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4651 if (!qinfo.udata) {
4652 qeth_put_cmd(iob);
4653 return -ENOMEM;
4654 }
4655 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4656
4657 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4658 if (rc)
4659 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4660 CARD_DEVID(card), rc);
4661 else {
4662 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4663 rc = -EFAULT;
4664 }
4665
4666 kfree(qinfo.udata);
4667 return rc;
4668}
4669
4670static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4671 struct qeth_reply *reply,
4672 unsigned long data)
4673{
4674 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4675 struct qeth_qoat_priv *priv = reply->param;
4676 int resdatalen;
4677
4678 QETH_CARD_TEXT(card, 3, "qoatcb");
4679 if (qeth_setadpparms_inspect_rc(cmd))
4680 return -EIO;
4681
4682 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4683
4684 if (resdatalen > (priv->buffer_len - priv->response_len))
4685 return -ENOSPC;
4686
4687 memcpy(priv->buffer + priv->response_len,
4688 &cmd->data.setadapterparms.hdr, resdatalen);
4689 priv->response_len += resdatalen;
4690
4691 if (cmd->data.setadapterparms.hdr.seq_no <
4692 cmd->data.setadapterparms.hdr.used_total)
4693 return 1;
4694 return 0;
4695}
4696
4697static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4698{
4699 int rc = 0;
4700 struct qeth_cmd_buffer *iob;
4701 struct qeth_ipa_cmd *cmd;
4702 struct qeth_query_oat *oat_req;
4703 struct qeth_query_oat_data oat_data;
4704 struct qeth_qoat_priv priv;
4705 void __user *tmp;
4706
4707 QETH_CARD_TEXT(card, 3, "qoatcmd");
4708
4709 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT))
4710 return -EOPNOTSUPP;
4711
4712 if (copy_from_user(&oat_data, udata, sizeof(oat_data)))
4713 return -EFAULT;
4714
4715 priv.buffer_len = oat_data.buffer_len;
4716 priv.response_len = 0;
4717 priv.buffer = vzalloc(oat_data.buffer_len);
4718 if (!priv.buffer)
4719 return -ENOMEM;
4720
4721 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4722 SETADP_DATA_SIZEOF(query_oat));
4723 if (!iob) {
4724 rc = -ENOMEM;
4725 goto out_free;
4726 }
4727 cmd = __ipa_cmd(iob);
4728 oat_req = &cmd->data.setadapterparms.data.query_oat;
4729 oat_req->subcmd_code = oat_data.command;
4730
4731 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, &priv);
4732 if (!rc) {
4733 tmp = is_compat_task() ? compat_ptr(oat_data.ptr) :
4734 u64_to_user_ptr(oat_data.ptr);
4735 oat_data.response_len = priv.response_len;
4736
4737 if (copy_to_user(tmp, priv.buffer, priv.response_len) ||
4738 copy_to_user(udata, &oat_data, sizeof(oat_data)))
4739 rc = -EFAULT;
4740 }
4741
4742out_free:
4743 vfree(priv.buffer);
4744 return rc;
4745}
4746
4747static int qeth_query_card_info_cb(struct qeth_card *card,
4748 struct qeth_reply *reply, unsigned long data)
4749{
4750 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4751 struct qeth_link_info *link_info = reply->param;
4752 struct qeth_query_card_info *card_info;
4753
4754 QETH_CARD_TEXT(card, 2, "qcrdincb");
4755 if (qeth_setadpparms_inspect_rc(cmd))
4756 return -EIO;
4757
4758 card_info = &cmd->data.setadapterparms.data.card_info;
4759 netdev_dbg(card->dev,
4760 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
4761 card_info->card_type, card_info->port_mode,
4762 card_info->port_speed);
4763
4764 switch (card_info->port_mode) {
4765 case CARD_INFO_PORTM_FULLDUPLEX:
4766 link_info->duplex = DUPLEX_FULL;
4767 break;
4768 case CARD_INFO_PORTM_HALFDUPLEX:
4769 link_info->duplex = DUPLEX_HALF;
4770 break;
4771 default:
4772 link_info->duplex = DUPLEX_UNKNOWN;
4773 }
4774
4775 switch (card_info->card_type) {
4776 case CARD_INFO_TYPE_1G_COPPER_A:
4777 case CARD_INFO_TYPE_1G_COPPER_B:
4778 link_info->speed = SPEED_1000;
4779 link_info->port = PORT_TP;
4780 break;
4781 case CARD_INFO_TYPE_1G_FIBRE_A:
4782 case CARD_INFO_TYPE_1G_FIBRE_B:
4783 link_info->speed = SPEED_1000;
4784 link_info->port = PORT_FIBRE;
4785 break;
4786 case CARD_INFO_TYPE_10G_FIBRE_A:
4787 case CARD_INFO_TYPE_10G_FIBRE_B:
4788 link_info->speed = SPEED_10000;
4789 link_info->port = PORT_FIBRE;
4790 break;
4791 default:
4792 switch (card_info->port_speed) {
4793 case CARD_INFO_PORTS_10M:
4794 link_info->speed = SPEED_10;
4795 break;
4796 case CARD_INFO_PORTS_100M:
4797 link_info->speed = SPEED_100;
4798 break;
4799 case CARD_INFO_PORTS_1G:
4800 link_info->speed = SPEED_1000;
4801 break;
4802 case CARD_INFO_PORTS_10G:
4803 link_info->speed = SPEED_10000;
4804 break;
4805 case CARD_INFO_PORTS_25G:
4806 link_info->speed = SPEED_25000;
4807 break;
4808 default:
4809 link_info->speed = SPEED_UNKNOWN;
4810 }
4811
4812 link_info->port = PORT_OTHER;
4813 }
4814
4815 return 0;
4816}
4817
4818int qeth_query_card_info(struct qeth_card *card,
4819 struct qeth_link_info *link_info)
4820{
4821 struct qeth_cmd_buffer *iob;
4822
4823 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4824 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4825 return -EOPNOTSUPP;
4826 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4827 if (!iob)
4828 return -ENOMEM;
4829
4830 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
4831}
4832
4833static int qeth_init_link_info_oat_cb(struct qeth_card *card,
4834 struct qeth_reply *reply_priv,
4835 unsigned long data)
4836{
4837 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4838 struct qeth_link_info *link_info = reply_priv->param;
4839 struct qeth_query_oat_physical_if *phys_if;
4840 struct qeth_query_oat_reply *reply;
4841
4842 if (qeth_setadpparms_inspect_rc(cmd))
4843 return -EIO;
4844
4845
4846 if (cmd->data.setadapterparms.hdr.used_total > 1)
4847 return -EINVAL;
4848
4849
4850 reply = &cmd->data.setadapterparms.data.query_oat.reply[0];
4851 if (reply->type != QETH_QOAT_REPLY_TYPE_PHYS_IF ||
4852 reply->length < sizeof(*reply))
4853 return -EINVAL;
4854
4855 phys_if = &reply->phys_if;
4856
4857 switch (phys_if->speed_duplex) {
4858 case QETH_QOAT_PHYS_SPEED_10M_HALF:
4859 link_info->speed = SPEED_10;
4860 link_info->duplex = DUPLEX_HALF;
4861 break;
4862 case QETH_QOAT_PHYS_SPEED_10M_FULL:
4863 link_info->speed = SPEED_10;
4864 link_info->duplex = DUPLEX_FULL;
4865 break;
4866 case QETH_QOAT_PHYS_SPEED_100M_HALF:
4867 link_info->speed = SPEED_100;
4868 link_info->duplex = DUPLEX_HALF;
4869 break;
4870 case QETH_QOAT_PHYS_SPEED_100M_FULL:
4871 link_info->speed = SPEED_100;
4872 link_info->duplex = DUPLEX_FULL;
4873 break;
4874 case QETH_QOAT_PHYS_SPEED_1000M_HALF:
4875 link_info->speed = SPEED_1000;
4876 link_info->duplex = DUPLEX_HALF;
4877 break;
4878 case QETH_QOAT_PHYS_SPEED_1000M_FULL:
4879 link_info->speed = SPEED_1000;
4880 link_info->duplex = DUPLEX_FULL;
4881 break;
4882 case QETH_QOAT_PHYS_SPEED_10G_FULL:
4883 link_info->speed = SPEED_10000;
4884 link_info->duplex = DUPLEX_FULL;
4885 break;
4886 case QETH_QOAT_PHYS_SPEED_25G_FULL:
4887 link_info->speed = SPEED_25000;
4888 link_info->duplex = DUPLEX_FULL;
4889 break;
4890 case QETH_QOAT_PHYS_SPEED_UNKNOWN:
4891 default:
4892 link_info->speed = SPEED_UNKNOWN;
4893 link_info->duplex = DUPLEX_UNKNOWN;
4894 break;
4895 }
4896
4897 switch (phys_if->media_type) {
4898 case QETH_QOAT_PHYS_MEDIA_COPPER:
4899 link_info->port = PORT_TP;
4900 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4901 break;
4902 case QETH_QOAT_PHYS_MEDIA_FIBRE_SHORT:
4903 link_info->port = PORT_FIBRE;
4904 link_info->link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4905 break;
4906 case QETH_QOAT_PHYS_MEDIA_FIBRE_LONG:
4907 link_info->port = PORT_FIBRE;
4908 link_info->link_mode = QETH_LINK_MODE_FIBRE_LONG;
4909 break;
4910 default:
4911 link_info->port = PORT_OTHER;
4912 link_info->link_mode = QETH_LINK_MODE_UNKNOWN;
4913 break;
4914 }
4915
4916 return 0;
4917}
4918
4919static void qeth_init_link_info(struct qeth_card *card)
4920{
4921 card->info.link_info.duplex = DUPLEX_FULL;
4922
4923 if (IS_IQD(card) || IS_VM_NIC(card)) {
4924 card->info.link_info.speed = SPEED_10000;
4925 card->info.link_info.port = PORT_FIBRE;
4926 card->info.link_info.link_mode = QETH_LINK_MODE_FIBRE_SHORT;
4927 } else {
4928 switch (card->info.link_type) {
4929 case QETH_LINK_TYPE_FAST_ETH:
4930 case QETH_LINK_TYPE_LANE_ETH100:
4931 card->info.link_info.speed = SPEED_100;
4932 card->info.link_info.port = PORT_TP;
4933 break;
4934 case QETH_LINK_TYPE_GBIT_ETH:
4935 case QETH_LINK_TYPE_LANE_ETH1000:
4936 card->info.link_info.speed = SPEED_1000;
4937 card->info.link_info.port = PORT_FIBRE;
4938 break;
4939 case QETH_LINK_TYPE_10GBIT_ETH:
4940 card->info.link_info.speed = SPEED_10000;
4941 card->info.link_info.port = PORT_FIBRE;
4942 break;
4943 case QETH_LINK_TYPE_25GBIT_ETH:
4944 card->info.link_info.speed = SPEED_25000;
4945 card->info.link_info.port = PORT_FIBRE;
4946 break;
4947 default:
4948 dev_info(&card->gdev->dev, "Unknown link type %x\n",
4949 card->info.link_type);
4950 card->info.link_info.speed = SPEED_UNKNOWN;
4951 card->info.link_info.port = PORT_OTHER;
4952 }
4953
4954 card->info.link_info.link_mode = QETH_LINK_MODE_UNKNOWN;
4955 }
4956
4957
4958 if (qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4959 struct qeth_link_info link_info;
4960 struct qeth_cmd_buffer *iob;
4961
4962 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4963 SETADP_DATA_SIZEOF(query_oat));
4964 if (iob) {
4965 struct qeth_ipa_cmd *cmd = __ipa_cmd(iob);
4966 struct qeth_query_oat *oat_req;
4967
4968 oat_req = &cmd->data.setadapterparms.data.query_oat;
4969 oat_req->subcmd_code = QETH_QOAT_SCOPE_INTERFACE;
4970
4971 if (!qeth_send_ipa_cmd(card, iob,
4972 qeth_init_link_info_oat_cb,
4973 &link_info)) {
4974 if (link_info.speed != SPEED_UNKNOWN)
4975 card->info.link_info.speed = link_info.speed;
4976 if (link_info.duplex != DUPLEX_UNKNOWN)
4977 card->info.link_info.duplex = link_info.duplex;
4978 if (link_info.port != PORT_OTHER)
4979 card->info.link_info.port = link_info.port;
4980 if (link_info.link_mode != QETH_LINK_MODE_UNKNOWN)
4981 card->info.link_info.link_mode = link_info.link_mode;
4982 }
4983 }
4984 }
4985}
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995int qeth_vm_request_mac(struct qeth_card *card)
4996{
4997 struct diag26c_mac_resp *response;
4998 struct diag26c_mac_req *request;
4999 int rc;
5000
5001 QETH_CARD_TEXT(card, 2, "vmreqmac");
5002
5003 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
5004 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
5005 if (!request || !response) {
5006 rc = -ENOMEM;
5007 goto out;
5008 }
5009
5010 request->resp_buf_len = sizeof(*response);
5011 request->resp_version = DIAG26C_VERSION2;
5012 request->op_code = DIAG26C_GET_MAC;
5013 request->devno = card->info.ddev_devno;
5014
5015 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5016 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
5017 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
5018 if (rc)
5019 goto out;
5020 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
5021
5022 if (request->resp_buf_len < sizeof(*response) ||
5023 response->version != request->resp_version) {
5024 rc = -EIO;
5025 QETH_CARD_TEXT(card, 2, "badresp");
5026 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
5027 sizeof(request->resp_buf_len));
5028 } else if (!is_valid_ether_addr(response->mac)) {
5029 rc = -EINVAL;
5030 QETH_CARD_TEXT(card, 2, "badmac");
5031 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
5032 } else {
5033 eth_hw_addr_set(card->dev, response->mac);
5034 }
5035
5036out:
5037 kfree(response);
5038 kfree(request);
5039 return rc;
5040}
5041EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
5042
5043static void qeth_determine_capabilities(struct qeth_card *card)
5044{
5045 struct qeth_channel *channel = &card->data;
5046 struct ccw_device *ddev = channel->ccwdev;
5047 int rc;
5048 int ddev_offline = 0;
5049
5050 QETH_CARD_TEXT(card, 2, "detcapab");
5051 if (!ddev->online) {
5052 ddev_offline = 1;
5053 rc = qeth_start_channel(channel);
5054 if (rc) {
5055 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5056 goto out;
5057 }
5058 }
5059
5060 rc = qeth_read_conf_data(card);
5061 if (rc) {
5062 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
5063 CARD_DEVID(card), rc);
5064 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5065 goto out_offline;
5066 }
5067
5068 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
5069 if (rc)
5070 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5071
5072 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
5073 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
5074 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
5075 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
5076 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
5077 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
5078 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
5079 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
5080 dev_info(&card->gdev->dev,
5081 "Completion Queueing supported\n");
5082 } else {
5083 card->options.cq = QETH_CQ_NOTAVAILABLE;
5084 }
5085
5086out_offline:
5087 if (ddev_offline == 1)
5088 qeth_stop_channel(channel);
5089out:
5090 return;
5091}
5092
5093static void qeth_read_ccw_conf_data(struct qeth_card *card)
5094{
5095 struct qeth_card_info *info = &card->info;
5096 struct ccw_device *cdev = CARD_DDEV(card);
5097 struct ccw_dev_id dev_id;
5098
5099 QETH_CARD_TEXT(card, 2, "ccwconfd");
5100 ccw_device_get_id(cdev, &dev_id);
5101
5102 info->ddev_devno = dev_id.devno;
5103 info->ids_valid = !ccw_device_get_cssid(cdev, &info->cssid) &&
5104 !ccw_device_get_iid(cdev, &info->iid) &&
5105 !ccw_device_get_chid(cdev, 0, &info->chid);
5106 info->ssid = dev_id.ssid;
5107
5108 dev_info(&card->gdev->dev, "CHID: %x CHPID: %x\n",
5109 info->chid, info->chpid);
5110
5111 QETH_CARD_TEXT_(card, 3, "devn%x", info->ddev_devno);
5112 QETH_CARD_TEXT_(card, 3, "cssid:%x", info->cssid);
5113 QETH_CARD_TEXT_(card, 3, "iid:%x", info->iid);
5114 QETH_CARD_TEXT_(card, 3, "ssid:%x", info->ssid);
5115 QETH_CARD_TEXT_(card, 3, "chpid:%x", info->chpid);
5116 QETH_CARD_TEXT_(card, 3, "chid:%x", info->chid);
5117 QETH_CARD_TEXT_(card, 3, "idval%x", info->ids_valid);
5118}
5119
5120static int qeth_qdio_establish(struct qeth_card *card)
5121{
5122 struct qdio_buffer **out_sbal_ptrs[QETH_MAX_OUT_QUEUES];
5123 struct qdio_buffer **in_sbal_ptrs[QETH_MAX_IN_QUEUES];
5124 struct qeth_qib_parms *qib_parms = NULL;
5125 struct qdio_initialize init_data;
5126 unsigned int no_input_qs = 1;
5127 unsigned int i;
5128 int rc = 0;
5129
5130 QETH_CARD_TEXT(card, 2, "qdioest");
5131
5132 if (!IS_IQD(card) && !IS_VM_NIC(card)) {
5133 qib_parms = kzalloc(sizeof_field(struct qib, parm), GFP_KERNEL);
5134 if (!qib_parms)
5135 return -ENOMEM;
5136
5137 qeth_fill_qib_parms(card, qib_parms);
5138 }
5139
5140 in_sbal_ptrs[0] = card->qdio.in_q->qdio_bufs;
5141 if (card->options.cq == QETH_CQ_ENABLED) {
5142 in_sbal_ptrs[1] = card->qdio.c_q->qdio_bufs;
5143 no_input_qs++;
5144 }
5145
5146 for (i = 0; i < card->qdio.no_out_queues; i++)
5147 out_sbal_ptrs[i] = card->qdio.out_qs[i]->qdio_bufs;
5148
5149 memset(&init_data, 0, sizeof(struct qdio_initialize));
5150 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
5151 QDIO_QETH_QFMT;
5152 init_data.qib_param_field_format = 0;
5153 init_data.qib_param_field = (void *)qib_parms;
5154 init_data.no_input_qs = no_input_qs;
5155 init_data.no_output_qs = card->qdio.no_out_queues;
5156 init_data.input_handler = qeth_qdio_input_handler;
5157 init_data.output_handler = qeth_qdio_output_handler;
5158 init_data.irq_poll = qeth_qdio_poll;
5159 init_data.int_parm = (unsigned long) card;
5160 init_data.input_sbal_addr_array = in_sbal_ptrs;
5161 init_data.output_sbal_addr_array = out_sbal_ptrs;
5162
5163 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5164 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5165 rc = qdio_allocate(CARD_DDEV(card), init_data.no_input_qs,
5166 init_data.no_output_qs);
5167 if (rc) {
5168 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5169 goto out;
5170 }
5171 rc = qdio_establish(CARD_DDEV(card), &init_data);
5172 if (rc) {
5173 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5174 qdio_free(CARD_DDEV(card));
5175 }
5176 }
5177
5178 switch (card->options.cq) {
5179 case QETH_CQ_ENABLED:
5180 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5181 break;
5182 case QETH_CQ_DISABLED:
5183 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5184 break;
5185 default:
5186 break;
5187 }
5188
5189out:
5190 kfree(qib_parms);
5191 return rc;
5192}
5193
5194static void qeth_core_free_card(struct qeth_card *card)
5195{
5196 QETH_CARD_TEXT(card, 2, "freecrd");
5197
5198 unregister_service_level(&card->qeth_service_level);
5199 debugfs_remove_recursive(card->debugfs);
5200 qeth_put_cmd(card->read_cmd);
5201 destroy_workqueue(card->event_wq);
5202 dev_set_drvdata(&card->gdev->dev, NULL);
5203 kfree(card);
5204}
5205
5206static void qeth_trace_features(struct qeth_card *card)
5207{
5208 QETH_CARD_TEXT(card, 2, "features");
5209 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5210 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5211 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5212 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5213 sizeof(card->info.diagass_support));
5214}
5215
5216static struct ccw_device_id qeth_ids[] = {
5217 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5218 .driver_info = QETH_CARD_TYPE_OSD},
5219 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5220 .driver_info = QETH_CARD_TYPE_IQD},
5221 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5222 .driver_info = QETH_CARD_TYPE_OSM},
5223#ifdef CONFIG_QETH_OSX
5224 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5225 .driver_info = QETH_CARD_TYPE_OSX},
5226#endif
5227 {},
5228};
5229MODULE_DEVICE_TABLE(ccw, qeth_ids);
5230
5231static struct ccw_driver qeth_ccw_driver = {
5232 .driver = {
5233 .owner = THIS_MODULE,
5234 .name = "qeth",
5235 },
5236 .ids = qeth_ids,
5237 .probe = ccwgroup_probe_ccwdev,
5238 .remove = ccwgroup_remove_ccwdev,
5239};
5240
5241static int qeth_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
5242{
5243 int retries = 3;
5244 int rc;
5245
5246 QETH_CARD_TEXT(card, 2, "hrdsetup");
5247 atomic_set(&card->force_alloc_skb, 0);
5248 rc = qeth_update_from_chp_desc(card);
5249 if (rc)
5250 return rc;
5251retry:
5252 if (retries < 3)
5253 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
5254 CARD_DEVID(card));
5255 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
5256 qeth_stop_channel(&card->data);
5257 qeth_stop_channel(&card->write);
5258 qeth_stop_channel(&card->read);
5259 qdio_free(CARD_DDEV(card));
5260
5261 rc = qeth_start_channel(&card->read);
5262 if (rc)
5263 goto retriable;
5264 rc = qeth_start_channel(&card->write);
5265 if (rc)
5266 goto retriable;
5267 rc = qeth_start_channel(&card->data);
5268 if (rc)
5269 goto retriable;
5270retriable:
5271 if (rc == -ERESTARTSYS) {
5272 QETH_CARD_TEXT(card, 2, "break1");
5273 return rc;
5274 } else if (rc) {
5275 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5276 if (--retries < 0)
5277 goto out;
5278 else
5279 goto retry;
5280 }
5281
5282 qeth_determine_capabilities(card);
5283 qeth_read_ccw_conf_data(card);
5284 qeth_idx_init(card);
5285
5286 rc = qeth_idx_activate_read_channel(card);
5287 if (rc == -EINTR) {
5288 QETH_CARD_TEXT(card, 2, "break2");
5289 return rc;
5290 } else if (rc) {
5291 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
5292 if (--retries < 0)
5293 goto out;
5294 else
5295 goto retry;
5296 }
5297
5298 rc = qeth_idx_activate_write_channel(card);
5299 if (rc == -EINTR) {
5300 QETH_CARD_TEXT(card, 2, "break3");
5301 return rc;
5302 } else if (rc) {
5303 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
5304 if (--retries < 0)
5305 goto out;
5306 else
5307 goto retry;
5308 }
5309 card->read_or_write_problem = 0;
5310 rc = qeth_mpc_initialize(card);
5311 if (rc) {
5312 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
5313 goto out;
5314 }
5315
5316 rc = qeth_send_startlan(card);
5317 if (rc) {
5318 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
5319 if (rc == -ENETDOWN) {
5320 dev_warn(&card->gdev->dev, "The LAN is offline\n");
5321 *carrier_ok = false;
5322 } else {
5323 goto out;
5324 }
5325 } else {
5326 *carrier_ok = true;
5327 }
5328
5329 card->options.ipa4.supported = 0;
5330 card->options.ipa6.supported = 0;
5331 card->options.adp.supported = 0;
5332 card->options.sbp.supported_funcs = 0;
5333 card->info.diagass_support = 0;
5334 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5335 if (rc == -ENOMEM)
5336 goto out;
5337 if (qeth_is_supported(card, IPA_IPV6)) {
5338 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5339 if (rc == -ENOMEM)
5340 goto out;
5341 }
5342 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5343 rc = qeth_query_setadapterparms(card);
5344 if (rc < 0) {
5345 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
5346 goto out;
5347 }
5348 }
5349 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5350 rc = qeth_query_setdiagass(card);
5351 if (rc)
5352 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5353 }
5354
5355 qeth_trace_features(card);
5356
5357 if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||
5358 (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)))
5359 card->info.hwtrap = 0;
5360
5361 if (card->options.isolation != ISOLATION_MODE_NONE) {
5362 rc = qeth_setadpparms_set_access_ctrl(card,
5363 card->options.isolation);
5364 if (rc)
5365 goto out;
5366 }
5367
5368 qeth_init_link_info(card);
5369
5370 rc = qeth_init_qdio_queues(card);
5371 if (rc) {
5372 QETH_CARD_TEXT_(card, 2, "9err%d", rc);
5373 goto out;
5374 }
5375
5376 return 0;
5377out:
5378 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5379 "an error on the device\n");
5380 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5381 CARD_DEVID(card), rc);
5382 return rc;
5383}
5384
5385static int qeth_set_online(struct qeth_card *card,
5386 const struct qeth_discipline *disc)
5387{
5388 bool carrier_ok;
5389 int rc;
5390
5391 mutex_lock(&card->conf_mutex);
5392 QETH_CARD_TEXT(card, 2, "setonlin");
5393
5394 rc = qeth_hardsetup_card(card, &carrier_ok);
5395 if (rc) {
5396 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
5397 rc = -ENODEV;
5398 goto err_hardsetup;
5399 }
5400
5401 qeth_print_status_message(card);
5402
5403 if (card->dev->reg_state != NETREG_REGISTERED)
5404
5405 qeth_set_real_num_tx_queues(card, qeth_tx_actual_queues(card));
5406
5407 rc = disc->set_online(card, carrier_ok);
5408 if (rc)
5409 goto err_online;
5410
5411
5412 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5413
5414 mutex_unlock(&card->conf_mutex);
5415 return 0;
5416
5417err_online:
5418err_hardsetup:
5419 qeth_qdio_clear_card(card, 0);
5420 qeth_clear_working_pool_list(card);
5421 qeth_flush_local_addrs(card);
5422
5423 qeth_stop_channel(&card->data);
5424 qeth_stop_channel(&card->write);
5425 qeth_stop_channel(&card->read);
5426 qdio_free(CARD_DDEV(card));
5427
5428 mutex_unlock(&card->conf_mutex);
5429 return rc;
5430}
5431
5432int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
5433 bool resetting)
5434{
5435 int rc, rc2, rc3;
5436
5437 mutex_lock(&card->conf_mutex);
5438 QETH_CARD_TEXT(card, 3, "setoffl");
5439
5440 if ((!resetting && card->info.hwtrap) || card->info.hwtrap == 2) {
5441 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5442 card->info.hwtrap = 1;
5443 }
5444
5445
5446 qeth_clear_ipacmd_list(card);
5447
5448 rtnl_lock();
5449 card->info.open_when_online = card->dev->flags & IFF_UP;
5450 dev_close(card->dev);
5451 netif_device_detach(card->dev);
5452 netif_carrier_off(card->dev);
5453 rtnl_unlock();
5454
5455 cancel_work_sync(&card->rx_mode_work);
5456
5457 disc->set_offline(card);
5458
5459 qeth_qdio_clear_card(card, 0);
5460 qeth_drain_output_queues(card);
5461 qeth_clear_working_pool_list(card);
5462 qeth_flush_local_addrs(card);
5463 card->info.promisc_mode = 0;
5464
5465 rc = qeth_stop_channel(&card->data);
5466 rc2 = qeth_stop_channel(&card->write);
5467 rc3 = qeth_stop_channel(&card->read);
5468 if (!rc)
5469 rc = (rc2) ? rc2 : rc3;
5470 if (rc)
5471 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
5472 qdio_free(CARD_DDEV(card));
5473
5474
5475 kobject_uevent(&card->gdev->dev.kobj, KOBJ_CHANGE);
5476
5477 mutex_unlock(&card->conf_mutex);
5478 return 0;
5479}
5480EXPORT_SYMBOL_GPL(qeth_set_offline);
5481
5482static int qeth_do_reset(void *data)
5483{
5484 const struct qeth_discipline *disc;
5485 struct qeth_card *card = data;
5486 int rc;
5487
5488
5489 disc = card->discipline;
5490
5491 QETH_CARD_TEXT(card, 2, "recover1");
5492 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
5493 return 0;
5494 QETH_CARD_TEXT(card, 2, "recover2");
5495 dev_warn(&card->gdev->dev,
5496 "A recovery process has been started for the device\n");
5497
5498 qeth_set_offline(card, disc, true);
5499 rc = qeth_set_online(card, disc);
5500 if (!rc) {
5501 dev_info(&card->gdev->dev,
5502 "Device successfully recovered!\n");
5503 } else {
5504 qeth_set_offline(card, disc, true);
5505 ccwgroup_set_offline(card->gdev, false);
5506 dev_warn(&card->gdev->dev,
5507 "The qeth device driver failed to recover an error on the device\n");
5508 }
5509 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
5510 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
5511 return 0;
5512}
5513
5514#if IS_ENABLED(CONFIG_QETH_L3)
5515static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
5516 struct qeth_hdr *hdr)
5517{
5518 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
5519 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
5520 struct net_device *dev = skb->dev;
5521
5522 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
5523 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
5524 "FAKELL", skb->len);
5525 return;
5526 }
5527
5528 if (!(l3_hdr->flags & QETH_HDR_PASSTHRU)) {
5529 u16 prot = (l3_hdr->flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
5530 ETH_P_IP;
5531 unsigned char tg_addr[ETH_ALEN];
5532
5533 skb_reset_network_header(skb);
5534 switch (l3_hdr->flags & QETH_HDR_CAST_MASK) {
5535 case QETH_CAST_MULTICAST:
5536 if (prot == ETH_P_IP)
5537 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
5538 else
5539 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
5540 QETH_CARD_STAT_INC(card, rx_multicast);
5541 break;
5542 case QETH_CAST_BROADCAST:
5543 ether_addr_copy(tg_addr, dev->broadcast);
5544 QETH_CARD_STAT_INC(card, rx_multicast);
5545 break;
5546 default:
5547 if (card->options.sniffer)
5548 skb->pkt_type = PACKET_OTHERHOST;
5549 ether_addr_copy(tg_addr, dev->dev_addr);
5550 }
5551
5552 if (l3_hdr->ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
5553 dev_hard_header(skb, dev, prot, tg_addr,
5554 &l3_hdr->next_hop.rx.src_mac, skb->len);
5555 else
5556 dev_hard_header(skb, dev, prot, tg_addr, "FAKELL",
5557 skb->len);
5558 }
5559
5560
5561 if (!card->options.sniffer &&
5562 (l3_hdr->ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
5563 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
5564 u16 tag = (l3_hdr->ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
5565 l3_hdr->vlan_id :
5566 l3_hdr->next_hop.rx.vlan_id;
5567
5568 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
5569 }
5570}
5571#endif
5572
5573static void qeth_receive_skb(struct qeth_card *card, struct sk_buff *skb,
5574 bool uses_frags, bool is_cso)
5575{
5576 struct napi_struct *napi = &card->napi;
5577
5578 if (is_cso && (card->dev->features & NETIF_F_RXCSUM)) {
5579 skb->ip_summed = CHECKSUM_UNNECESSARY;
5580 QETH_CARD_STAT_INC(card, rx_skb_csum);
5581 } else {
5582 skb->ip_summed = CHECKSUM_NONE;
5583 }
5584
5585 QETH_CARD_STAT_ADD(card, rx_bytes, skb->len);
5586 QETH_CARD_STAT_INC(card, rx_packets);
5587 if (skb_is_nonlinear(skb)) {
5588 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5589 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5590 skb_shinfo(skb)->nr_frags);
5591 }
5592
5593 if (uses_frags) {
5594 napi_gro_frags(napi);
5595 } else {
5596 skb->protocol = eth_type_trans(skb, skb->dev);
5597 napi_gro_receive(napi, skb);
5598 }
5599}
5600
5601static void qeth_create_skb_frag(struct sk_buff *skb, char *data, int data_len)
5602{
5603 struct page *page = virt_to_page(data);
5604 unsigned int next_frag;
5605
5606 next_frag = skb_shinfo(skb)->nr_frags;
5607 get_page(page);
5608 skb_add_rx_frag(skb, next_frag, page, offset_in_page(data), data_len,
5609 data_len);
5610}
5611
5612static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5613{
5614 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5615}
5616
5617static int qeth_extract_skb(struct qeth_card *card,
5618 struct qeth_qdio_buffer *qethbuffer, u8 *element_no,
5619 int *__offset)
5620{
5621 struct qeth_priv *priv = netdev_priv(card->dev);
5622 struct qdio_buffer *buffer = qethbuffer->buffer;
5623 struct napi_struct *napi = &card->napi;
5624 struct qdio_buffer_element *element;
5625 unsigned int linear_len = 0;
5626 bool uses_frags = false;
5627 int offset = *__offset;
5628 bool use_rx_sg = false;
5629 unsigned int headroom;
5630 struct qeth_hdr *hdr;
5631 struct sk_buff *skb;
5632 int skb_len = 0;
5633 bool is_cso;
5634
5635 element = &buffer->element[*element_no];
5636
5637next_packet:
5638
5639 while (element->length < offset + sizeof(struct qeth_hdr)) {
5640 if (qeth_is_last_sbale(element))
5641 return -ENODATA;
5642 element++;
5643 offset = 0;
5644 }
5645
5646 hdr = phys_to_virt(element->addr) + offset;
5647 offset += sizeof(*hdr);
5648 skb = NULL;
5649
5650 switch (hdr->hdr.l2.id) {
5651 case QETH_HEADER_TYPE_LAYER2:
5652 skb_len = hdr->hdr.l2.pkt_length;
5653 is_cso = hdr->hdr.l2.flags[1] & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5654
5655 linear_len = ETH_HLEN;
5656 headroom = 0;
5657 break;
5658 case QETH_HEADER_TYPE_LAYER3:
5659 skb_len = hdr->hdr.l3.length;
5660 is_cso = hdr->hdr.l3.ext_flags & QETH_HDR_EXT_CSUM_TRANSP_REQ;
5661
5662 if (!IS_LAYER3(card)) {
5663 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5664 goto walk_packet;
5665 }
5666
5667 if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
5668 linear_len = ETH_HLEN;
5669 headroom = 0;
5670 break;
5671 }
5672
5673 if (hdr->hdr.l3.flags & QETH_HDR_IPV6)
5674 linear_len = sizeof(struct ipv6hdr);
5675 else
5676 linear_len = sizeof(struct iphdr);
5677 headroom = ETH_HLEN;
5678 break;
5679 default:
5680 if (hdr->hdr.l2.id & QETH_HEADER_MASK_INVAL)
5681 QETH_CARD_STAT_INC(card, rx_frame_errors);
5682 else
5683 QETH_CARD_STAT_INC(card, rx_dropped_notsupp);
5684
5685
5686 return -EPROTONOSUPPORT;
5687 }
5688
5689 if (skb_len < linear_len) {
5690 QETH_CARD_STAT_INC(card, rx_dropped_runt);
5691 goto walk_packet;
5692 }
5693
5694 use_rx_sg = (card->options.cq == QETH_CQ_ENABLED) ||
5695 (skb_len > READ_ONCE(priv->rx_copybreak) &&
5696 !atomic_read(&card->force_alloc_skb));
5697
5698 if (use_rx_sg) {
5699
5700 if (qethbuffer->rx_skb &&
5701 skb_tailroom(qethbuffer->rx_skb) >= linear_len + headroom) {
5702 skb = qethbuffer->rx_skb;
5703 qethbuffer->rx_skb = NULL;
5704 goto use_skb;
5705 }
5706
5707 skb = napi_get_frags(napi);
5708 if (!skb) {
5709
5710 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5711 goto walk_packet;
5712 }
5713
5714 if (skb_tailroom(skb) >= linear_len + headroom) {
5715 uses_frags = true;
5716 goto use_skb;
5717 }
5718
5719 netdev_info_once(card->dev,
5720 "Insufficient linear space in NAPI frags skb, need %u but have %u\n",
5721 linear_len + headroom, skb_tailroom(skb));
5722
5723 }
5724
5725 linear_len = skb_len;
5726 skb = napi_alloc_skb(napi, linear_len + headroom);
5727 if (!skb) {
5728 QETH_CARD_STAT_INC(card, rx_dropped_nomem);
5729 goto walk_packet;
5730 }
5731
5732use_skb:
5733 if (headroom)
5734 skb_reserve(skb, headroom);
5735walk_packet:
5736 while (skb_len) {
5737 int data_len = min(skb_len, (int)(element->length - offset));
5738 char *data = phys_to_virt(element->addr) + offset;
5739
5740 skb_len -= data_len;
5741 offset += data_len;
5742
5743
5744 if (skb && data_len) {
5745 if (linear_len) {
5746 unsigned int copy_len;
5747
5748 copy_len = min_t(unsigned int, linear_len,
5749 data_len);
5750
5751 skb_put_data(skb, data, copy_len);
5752 linear_len -= copy_len;
5753 data_len -= copy_len;
5754 data += copy_len;
5755 }
5756
5757 if (data_len)
5758 qeth_create_skb_frag(skb, data, data_len);
5759 }
5760
5761
5762 if (skb_len) {
5763 if (qeth_is_last_sbale(element)) {
5764 QETH_CARD_TEXT(card, 4, "unexeob");
5765 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5766 if (skb) {
5767 if (uses_frags)
5768 napi_free_frags(napi);
5769 else
5770 kfree_skb(skb);
5771 QETH_CARD_STAT_INC(card,
5772 rx_length_errors);
5773 }
5774 return -EMSGSIZE;
5775 }
5776 element++;
5777 offset = 0;
5778 }
5779 }
5780
5781
5782 if (!skb)
5783 goto next_packet;
5784
5785 *element_no = element - &buffer->element[0];
5786 *__offset = offset;
5787
5788#if IS_ENABLED(CONFIG_QETH_L3)
5789 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER3)
5790 qeth_l3_rebuild_skb(card, skb, hdr);
5791#endif
5792
5793 qeth_receive_skb(card, skb, uses_frags, is_cso);
5794 return 0;
5795}
5796
5797static unsigned int qeth_extract_skbs(struct qeth_card *card, int budget,
5798 struct qeth_qdio_buffer *buf, bool *done)
5799{
5800 unsigned int work_done = 0;
5801
5802 while (budget) {
5803 if (qeth_extract_skb(card, buf, &card->rx.buf_element,
5804 &card->rx.e_offset)) {
5805 *done = true;
5806 break;
5807 }
5808
5809 work_done++;
5810 budget--;
5811 }
5812
5813 return work_done;
5814}
5815
5816static unsigned int qeth_rx_poll(struct qeth_card *card, int budget)
5817{
5818 struct qeth_rx *ctx = &card->rx;
5819 unsigned int work_done = 0;
5820
5821 while (budget > 0) {
5822 struct qeth_qdio_buffer *buffer;
5823 unsigned int skbs_done = 0;
5824 bool done = false;
5825
5826
5827 if (!card->rx.b_count) {
5828 card->rx.qdio_err = 0;
5829 card->rx.b_count =
5830 qdio_inspect_input_queue(CARD_DDEV(card), 0,
5831 &card->rx.b_index,
5832 &card->rx.qdio_err);
5833 if (card->rx.b_count <= 0) {
5834 card->rx.b_count = 0;
5835 break;
5836 }
5837 }
5838
5839
5840 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5841 if (!(card->rx.qdio_err &&
5842 qeth_check_qdio_errors(card, buffer->buffer,
5843 card->rx.qdio_err, "qinerr")))
5844 skbs_done = qeth_extract_skbs(card, budget, buffer,
5845 &done);
5846 else
5847 done = true;
5848
5849 work_done += skbs_done;
5850 budget -= skbs_done;
5851
5852 if (done) {
5853 QETH_CARD_STAT_INC(card, rx_bufs);
5854 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
5855 buffer->pool_entry = NULL;
5856 card->rx.b_count--;
5857 ctx->bufs_refill++;
5858 ctx->bufs_refill -= qeth_rx_refill_queue(card,
5859 ctx->bufs_refill);
5860
5861
5862 card->rx.b_index = QDIO_BUFNR(card->rx.b_index + 1);
5863 card->rx.buf_element = 0;
5864 card->rx.e_offset = 0;
5865 }
5866 }
5867
5868 return work_done;
5869}
5870
5871static void qeth_cq_poll(struct qeth_card *card)
5872{
5873 unsigned int work_done = 0;
5874
5875 while (work_done < QDIO_MAX_BUFFERS_PER_Q) {
5876 unsigned int start, error;
5877 int completed;
5878
5879 completed = qdio_inspect_input_queue(CARD_DDEV(card), 1, &start,
5880 &error);
5881 if (completed <= 0)
5882 return;
5883
5884 qeth_qdio_cq_handler(card, error, 1, start, completed);
5885 work_done += completed;
5886 }
5887}
5888
5889int qeth_poll(struct napi_struct *napi, int budget)
5890{
5891 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5892 unsigned int work_done;
5893
5894 work_done = qeth_rx_poll(card, budget);
5895
5896 if (qeth_use_tx_irqs(card)) {
5897 struct qeth_qdio_out_q *queue;
5898 unsigned int i;
5899
5900 qeth_for_each_output_queue(card, queue, i) {
5901 if (!qeth_out_queue_is_empty(queue))
5902 napi_schedule(&queue->napi);
5903 }
5904 }
5905
5906 if (card->options.cq == QETH_CQ_ENABLED)
5907 qeth_cq_poll(card);
5908
5909 if (budget) {
5910 struct qeth_rx *ctx = &card->rx;
5911
5912
5913 ctx->bufs_refill -= qeth_rx_refill_queue(card, ctx->bufs_refill);
5914
5915
5916 if (work_done >= budget)
5917 return work_done;
5918 }
5919
5920 if (napi_complete_done(napi, work_done) &&
5921 qdio_start_irq(CARD_DDEV(card)))
5922 napi_schedule(napi);
5923
5924 return work_done;
5925}
5926EXPORT_SYMBOL_GPL(qeth_poll);
5927
5928static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5929 unsigned int bidx, unsigned int qdio_error,
5930 int budget)
5931{
5932 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5933 u8 sflags = buffer->buffer->element[15].sflags;
5934 struct qeth_card *card = queue->card;
5935 bool error = !!qdio_error;
5936
5937 if (qdio_error == QDIO_ERROR_SLSB_PENDING) {
5938 struct qaob *aob = buffer->aob;
5939 struct qeth_qaob_priv1 *priv;
5940 enum iucv_tx_notify notify;
5941
5942 if (!aob) {
5943 netdev_WARN_ONCE(card->dev,
5944 "Pending TX buffer %#x without QAOB on TX queue %u\n",
5945 bidx, queue->queue_no);
5946 qeth_schedule_recovery(card);
5947 return;
5948 }
5949
5950 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5951
5952 priv = (struct qeth_qaob_priv1 *)&aob->user1;
5953
5954 if (xchg(&priv->state, QETH_QAOB_PENDING) != QETH_QAOB_DONE) {
5955 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5956
5957
5958 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5959 if (qeth_alloc_out_buf(queue, bidx, GFP_ATOMIC)) {
5960 QETH_CARD_TEXT(card, 2, "outofbuf");
5961 qeth_schedule_recovery(card);
5962 }
5963
5964 list_add(&buffer->list_entry, &queue->pending_bufs);
5965
5966 return;
5967 }
5968
5969
5970 notify = qeth_compute_cq_notification(aob->aorc, 0);
5971 qeth_notify_skbs(queue, buffer, notify);
5972 error = !!aob->aorc;
5973 memset(aob, 0, sizeof(*aob));
5974 } else if (card->options.cq == QETH_CQ_ENABLED) {
5975 qeth_notify_skbs(queue, buffer,
5976 qeth_compute_cq_notification(sflags, 0));
5977 }
5978
5979 qeth_clear_output_buffer(queue, buffer, error, budget);
5980}
5981
5982static int qeth_tx_poll(struct napi_struct *napi, int budget)
5983{
5984 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5985 unsigned int queue_no = queue->queue_no;
5986 struct qeth_card *card = queue->card;
5987 struct net_device *dev = card->dev;
5988 unsigned int work_done = 0;
5989 struct netdev_queue *txq;
5990
5991 if (IS_IQD(card))
5992 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5993 else
5994 txq = netdev_get_tx_queue(dev, queue_no);
5995
5996 while (1) {
5997 unsigned int start, error, i;
5998 unsigned int packets = 0;
5999 unsigned int bytes = 0;
6000 int completed;
6001
6002 qeth_tx_complete_pending_bufs(card, queue, false, budget);
6003
6004 if (qeth_out_queue_is_empty(queue)) {
6005 napi_complete(napi);
6006 return 0;
6007 }
6008
6009
6010 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
6011 QETH_TXQ_STAT_INC(queue, completion_yield);
6012 if (napi_complete_done(napi, 0))
6013 napi_schedule(napi);
6014 return 0;
6015 }
6016
6017 completed = qdio_inspect_output_queue(CARD_DDEV(card), queue_no,
6018 &start, &error);
6019 if (completed <= 0) {
6020
6021 if (napi_complete_done(napi, 0) &&
6022 !atomic_read(&queue->set_pci_flags_count))
6023 qeth_tx_arm_timer(queue, queue->rescan_usecs);
6024 return 0;
6025 }
6026
6027 for (i = start; i < start + completed; i++) {
6028 struct qeth_qdio_out_buffer *buffer;
6029 unsigned int bidx = QDIO_BUFNR(i);
6030
6031 buffer = queue->bufs[bidx];
6032 packets += buffer->frames;
6033 bytes += buffer->bytes;
6034
6035 qeth_handle_send_error(card, buffer, error);
6036 if (IS_IQD(card))
6037 qeth_iqd_tx_complete(queue, bidx, error, budget);
6038 else
6039 qeth_clear_output_buffer(queue, buffer, error,
6040 budget);
6041 }
6042
6043 atomic_sub(completed, &queue->used_buffers);
6044 work_done += completed;
6045 if (IS_IQD(card))
6046 netdev_tx_completed_queue(txq, packets, bytes);
6047 else
6048 qeth_check_outbound_queue(queue);
6049
6050
6051
6052
6053
6054
6055 if (netif_tx_queue_stopped(txq) &&
6056 !qeth_out_queue_is_full(queue))
6057 netif_tx_wake_queue(txq);
6058 }
6059}
6060
6061static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
6062{
6063 if (!cmd->hdr.return_code)
6064 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6065 return cmd->hdr.return_code;
6066}
6067
6068static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
6069 struct qeth_reply *reply,
6070 unsigned long data)
6071{
6072 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6073 struct qeth_ipa_caps *caps = reply->param;
6074
6075 if (qeth_setassparms_inspect_rc(cmd))
6076 return -EIO;
6077
6078 caps->supported = cmd->data.setassparms.data.caps.supported;
6079 caps->enabled = cmd->data.setassparms.data.caps.enabled;
6080 return 0;
6081}
6082
6083int qeth_setassparms_cb(struct qeth_card *card,
6084 struct qeth_reply *reply, unsigned long data)
6085{
6086 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6087
6088 QETH_CARD_TEXT(card, 4, "defadpcb");
6089
6090 if (cmd->hdr.return_code)
6091 return -EIO;
6092
6093 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
6094 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
6095 card->options.ipa4.enabled = cmd->hdr.assists.enabled;
6096 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
6097 card->options.ipa6.enabled = cmd->hdr.assists.enabled;
6098 return 0;
6099}
6100EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
6101
6102struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
6103 enum qeth_ipa_funcs ipa_func,
6104 u16 cmd_code,
6105 unsigned int data_length,
6106 enum qeth_prot_versions prot)
6107{
6108 struct qeth_ipacmd_setassparms *setassparms;
6109 struct qeth_ipacmd_setassparms_hdr *hdr;
6110 struct qeth_cmd_buffer *iob;
6111
6112 QETH_CARD_TEXT(card, 4, "getasscm");
6113 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
6114 data_length +
6115 offsetof(struct qeth_ipacmd_setassparms,
6116 data));
6117 if (!iob)
6118 return NULL;
6119
6120 setassparms = &__ipa_cmd(iob)->data.setassparms;
6121 setassparms->assist_no = ipa_func;
6122
6123 hdr = &setassparms->hdr;
6124 hdr->length = sizeof(*hdr) + data_length;
6125 hdr->command_code = cmd_code;
6126 return iob;
6127}
6128EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
6129
6130int qeth_send_simple_setassparms_prot(struct qeth_card *card,
6131 enum qeth_ipa_funcs ipa_func,
6132 u16 cmd_code, u32 *data,
6133 enum qeth_prot_versions prot)
6134{
6135 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
6136 struct qeth_cmd_buffer *iob;
6137
6138 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
6139 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
6140 if (!iob)
6141 return -ENOMEM;
6142
6143 if (data)
6144 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
6145 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
6146}
6147EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
6148
6149static void qeth_unregister_dbf_views(void)
6150{
6151 int x;
6152
6153 for (x = 0; x < QETH_DBF_INFOS; x++) {
6154 debug_unregister(qeth_dbf[x].id);
6155 qeth_dbf[x].id = NULL;
6156 }
6157}
6158
6159void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
6160{
6161 char dbf_txt_buf[32];
6162 va_list args;
6163
6164 if (!debug_level_enabled(id, level))
6165 return;
6166 va_start(args, fmt);
6167 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
6168 va_end(args);
6169 debug_text_event(id, level, dbf_txt_buf);
6170}
6171EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
6172
6173static int qeth_register_dbf_views(void)
6174{
6175 int ret;
6176 int x;
6177
6178 for (x = 0; x < QETH_DBF_INFOS; x++) {
6179
6180 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
6181 qeth_dbf[x].pages,
6182 qeth_dbf[x].areas,
6183 qeth_dbf[x].len);
6184 if (qeth_dbf[x].id == NULL) {
6185 qeth_unregister_dbf_views();
6186 return -ENOMEM;
6187 }
6188
6189
6190 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
6191 if (ret) {
6192 qeth_unregister_dbf_views();
6193 return ret;
6194 }
6195
6196
6197 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
6198 }
6199
6200 return 0;
6201}
6202
6203static DEFINE_MUTEX(qeth_mod_mutex);
6204
6205int qeth_setup_discipline(struct qeth_card *card,
6206 enum qeth_discipline_id discipline)
6207{
6208 int rc;
6209
6210 mutex_lock(&qeth_mod_mutex);
6211 switch (discipline) {
6212 case QETH_DISCIPLINE_LAYER3:
6213 card->discipline = try_then_request_module(
6214 symbol_get(qeth_l3_discipline), "qeth_l3");
6215 break;
6216 case QETH_DISCIPLINE_LAYER2:
6217 card->discipline = try_then_request_module(
6218 symbol_get(qeth_l2_discipline), "qeth_l2");
6219 break;
6220 default:
6221 break;
6222 }
6223 mutex_unlock(&qeth_mod_mutex);
6224
6225 if (!card->discipline) {
6226 dev_err(&card->gdev->dev, "There is no kernel module to "
6227 "support discipline %d\n", discipline);
6228 return -EINVAL;
6229 }
6230
6231 rc = card->discipline->setup(card->gdev);
6232 if (rc) {
6233 if (discipline == QETH_DISCIPLINE_LAYER2)
6234 symbol_put(qeth_l2_discipline);
6235 else
6236 symbol_put(qeth_l3_discipline);
6237 card->discipline = NULL;
6238
6239 return rc;
6240 }
6241
6242 card->options.layer = discipline;
6243 return 0;
6244}
6245
6246void qeth_remove_discipline(struct qeth_card *card)
6247{
6248 card->discipline->remove(card->gdev);
6249
6250 if (IS_LAYER2(card))
6251 symbol_put(qeth_l2_discipline);
6252 else
6253 symbol_put(qeth_l3_discipline);
6254 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
6255 card->discipline = NULL;
6256}
6257
6258static const struct device_type qeth_generic_devtype = {
6259 .name = "qeth_generic",
6260};
6261
6262#define DBF_NAME_LEN 20
6263
6264struct qeth_dbf_entry {
6265 char dbf_name[DBF_NAME_LEN];
6266 debug_info_t *dbf_info;
6267 struct list_head dbf_list;
6268};
6269
6270static LIST_HEAD(qeth_dbf_list);
6271static DEFINE_MUTEX(qeth_dbf_list_mutex);
6272
6273static debug_info_t *qeth_get_dbf_entry(char *name)
6274{
6275 struct qeth_dbf_entry *entry;
6276 debug_info_t *rc = NULL;
6277
6278 mutex_lock(&qeth_dbf_list_mutex);
6279 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
6280 if (strcmp(entry->dbf_name, name) == 0) {
6281 rc = entry->dbf_info;
6282 break;
6283 }
6284 }
6285 mutex_unlock(&qeth_dbf_list_mutex);
6286 return rc;
6287}
6288
6289static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
6290{
6291 struct qeth_dbf_entry *new_entry;
6292
6293 card->debug = debug_register(name, 2, 1, 8);
6294 if (!card->debug) {
6295 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
6296 goto err;
6297 }
6298 if (debug_register_view(card->debug, &debug_hex_ascii_view))
6299 goto err_dbg;
6300 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
6301 if (!new_entry)
6302 goto err_dbg;
6303 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
6304 new_entry->dbf_info = card->debug;
6305 mutex_lock(&qeth_dbf_list_mutex);
6306 list_add(&new_entry->dbf_list, &qeth_dbf_list);
6307 mutex_unlock(&qeth_dbf_list_mutex);
6308
6309 return 0;
6310
6311err_dbg:
6312 debug_unregister(card->debug);
6313err:
6314 return -ENOMEM;
6315}
6316
6317static void qeth_clear_dbf_list(void)
6318{
6319 struct qeth_dbf_entry *entry, *tmp;
6320
6321 mutex_lock(&qeth_dbf_list_mutex);
6322 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
6323 list_del(&entry->dbf_list);
6324 debug_unregister(entry->dbf_info);
6325 kfree(entry);
6326 }
6327 mutex_unlock(&qeth_dbf_list_mutex);
6328}
6329
6330static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
6331{
6332 struct net_device *dev;
6333 struct qeth_priv *priv;
6334
6335 switch (card->info.type) {
6336 case QETH_CARD_TYPE_IQD:
6337 dev = alloc_netdev_mqs(sizeof(*priv), "hsi%d", NET_NAME_UNKNOWN,
6338 ether_setup, QETH_MAX_OUT_QUEUES, 1);
6339 break;
6340 case QETH_CARD_TYPE_OSM:
6341 dev = alloc_etherdev(sizeof(*priv));
6342 break;
6343 default:
6344 dev = alloc_etherdev_mqs(sizeof(*priv), QETH_MAX_OUT_QUEUES, 1);
6345 }
6346
6347 if (!dev)
6348 return NULL;
6349
6350 priv = netdev_priv(dev);
6351 priv->rx_copybreak = QETH_RX_COPYBREAK;
6352 priv->tx_wanted_queues = IS_IQD(card) ? QETH_IQD_MIN_TXQ : 1;
6353
6354 dev->ml_priv = card;
6355 dev->watchdog_timeo = QETH_TX_TIMEOUT;
6356 dev->min_mtu = 576;
6357
6358 dev->max_mtu = 0;
6359 dev->mtu = 0;
6360 SET_NETDEV_DEV(dev, &card->gdev->dev);
6361 netif_carrier_off(dev);
6362
6363 dev->ethtool_ops = &qeth_ethtool_ops;
6364 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
6365 dev->hw_features |= NETIF_F_SG;
6366 dev->vlan_features |= NETIF_F_SG;
6367 if (IS_IQD(card))
6368 dev->features |= NETIF_F_SG;
6369
6370 return dev;
6371}
6372
6373struct net_device *qeth_clone_netdev(struct net_device *orig)
6374{
6375 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
6376
6377 if (!clone)
6378 return NULL;
6379
6380 clone->dev_port = orig->dev_port;
6381 return clone;
6382}
6383
6384static int qeth_core_probe_device(struct ccwgroup_device *gdev)
6385{
6386 struct qeth_card *card;
6387 struct device *dev;
6388 int rc;
6389 enum qeth_discipline_id enforced_disc;
6390 char dbf_name[DBF_NAME_LEN];
6391
6392 QETH_DBF_TEXT(SETUP, 2, "probedev");
6393
6394 dev = &gdev->dev;
6395 if (!get_device(dev))
6396 return -ENODEV;
6397
6398 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
6399
6400 card = qeth_alloc_card(gdev);
6401 if (!card) {
6402 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
6403 rc = -ENOMEM;
6404 goto err_dev;
6405 }
6406
6407 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
6408 dev_name(&gdev->dev));
6409 card->debug = qeth_get_dbf_entry(dbf_name);
6410 if (!card->debug) {
6411 rc = qeth_add_dbf_entry(card, dbf_name);
6412 if (rc)
6413 goto err_card;
6414 }
6415
6416 qeth_setup_card(card);
6417 card->dev = qeth_alloc_netdev(card);
6418 if (!card->dev) {
6419 rc = -ENOMEM;
6420 goto err_card;
6421 }
6422
6423 qeth_determine_capabilities(card);
6424 qeth_set_blkt_defaults(card);
6425
6426 card->qdio.in_q = qeth_alloc_qdio_queue();
6427 if (!card->qdio.in_q) {
6428 rc = -ENOMEM;
6429 goto err_rx_queue;
6430 }
6431
6432 card->qdio.no_out_queues = card->dev->num_tx_queues;
6433 rc = qeth_update_from_chp_desc(card);
6434 if (rc)
6435 goto err_chp_desc;
6436
6437 gdev->dev.groups = qeth_dev_groups;
6438
6439 enforced_disc = qeth_enforce_discipline(card);
6440 switch (enforced_disc) {
6441 case QETH_DISCIPLINE_UNDETERMINED:
6442 gdev->dev.type = &qeth_generic_devtype;
6443 break;
6444 default:
6445 card->info.layer_enforced = true;
6446
6447 rc = qeth_setup_discipline(card, enforced_disc);
6448 if (rc)
6449 goto err_setup_disc;
6450
6451 break;
6452 }
6453
6454 return 0;
6455
6456err_setup_disc:
6457err_chp_desc:
6458 qeth_free_qdio_queue(card->qdio.in_q);
6459err_rx_queue:
6460 free_netdev(card->dev);
6461err_card:
6462 qeth_core_free_card(card);
6463err_dev:
6464 put_device(dev);
6465 return rc;
6466}
6467
6468static void qeth_core_remove_device(struct ccwgroup_device *gdev)
6469{
6470 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6471
6472 QETH_CARD_TEXT(card, 2, "removedv");
6473
6474 mutex_lock(&card->discipline_mutex);
6475 if (card->discipline)
6476 qeth_remove_discipline(card);
6477 mutex_unlock(&card->discipline_mutex);
6478
6479 qeth_free_qdio_queues(card);
6480
6481 qeth_free_qdio_queue(card->qdio.in_q);
6482 free_netdev(card->dev);
6483 qeth_core_free_card(card);
6484 put_device(&gdev->dev);
6485}
6486
6487static int qeth_core_set_online(struct ccwgroup_device *gdev)
6488{
6489 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6490 int rc = 0;
6491 enum qeth_discipline_id def_discipline;
6492
6493 mutex_lock(&card->discipline_mutex);
6494 if (!card->discipline) {
6495 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
6496 QETH_DISCIPLINE_LAYER2;
6497 rc = qeth_setup_discipline(card, def_discipline);
6498 if (rc)
6499 goto err;
6500 }
6501
6502 rc = qeth_set_online(card, card->discipline);
6503
6504err:
6505 mutex_unlock(&card->discipline_mutex);
6506 return rc;
6507}
6508
6509static int qeth_core_set_offline(struct ccwgroup_device *gdev)
6510{
6511 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6512 int rc;
6513
6514 mutex_lock(&card->discipline_mutex);
6515 rc = qeth_set_offline(card, card->discipline, false);
6516 mutex_unlock(&card->discipline_mutex);
6517
6518 return rc;
6519}
6520
6521static void qeth_core_shutdown(struct ccwgroup_device *gdev)
6522{
6523 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
6524
6525 qeth_set_allowed_threads(card, 0, 1);
6526 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
6527 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
6528 qeth_qdio_clear_card(card, 0);
6529 qeth_drain_output_queues(card);
6530 qdio_free(CARD_DDEV(card));
6531}
6532
6533static ssize_t group_store(struct device_driver *ddrv, const char *buf,
6534 size_t count)
6535{
6536 int err;
6537
6538 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
6539 buf);
6540
6541 return err ? err : count;
6542}
6543static DRIVER_ATTR_WO(group);
6544
6545static struct attribute *qeth_drv_attrs[] = {
6546 &driver_attr_group.attr,
6547 NULL,
6548};
6549static struct attribute_group qeth_drv_attr_group = {
6550 .attrs = qeth_drv_attrs,
6551};
6552static const struct attribute_group *qeth_drv_attr_groups[] = {
6553 &qeth_drv_attr_group,
6554 NULL,
6555};
6556
6557static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
6558 .driver = {
6559 .groups = qeth_drv_attr_groups,
6560 .owner = THIS_MODULE,
6561 .name = "qeth",
6562 },
6563 .ccw_driver = &qeth_ccw_driver,
6564 .setup = qeth_core_probe_device,
6565 .remove = qeth_core_remove_device,
6566 .set_online = qeth_core_set_online,
6567 .set_offline = qeth_core_set_offline,
6568 .shutdown = qeth_core_shutdown,
6569};
6570
6571int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd)
6572{
6573 struct qeth_card *card = dev->ml_priv;
6574 int rc = 0;
6575
6576 switch (cmd) {
6577 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
6578 rc = qeth_snmp_command(card, data);
6579 break;
6580 case SIOC_QETH_GET_CARD_TYPE:
6581 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
6582 !IS_VM_NIC(card))
6583 return 1;
6584 return 0;
6585 case SIOC_QETH_QUERY_OAT:
6586 rc = qeth_query_oat_command(card, data);
6587 break;
6588 default:
6589 rc = -EOPNOTSUPP;
6590 }
6591 if (rc)
6592 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6593 return rc;
6594}
6595EXPORT_SYMBOL_GPL(qeth_siocdevprivate);
6596
6597int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6598{
6599 struct qeth_card *card = dev->ml_priv;
6600 struct mii_ioctl_data *mii_data;
6601 int rc = 0;
6602
6603 switch (cmd) {
6604 case SIOCGMIIPHY:
6605 mii_data = if_mii(rq);
6606 mii_data->phy_id = 0;
6607 break;
6608 case SIOCGMIIREG:
6609 mii_data = if_mii(rq);
6610 if (mii_data->phy_id != 0)
6611 rc = -EINVAL;
6612 else
6613 mii_data->val_out = qeth_mdio_read(dev,
6614 mii_data->phy_id, mii_data->reg_num);
6615 break;
6616 default:
6617 return -EOPNOTSUPP;
6618 }
6619 if (rc)
6620 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6621 return rc;
6622}
6623EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6624
6625static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
6626 unsigned long data)
6627{
6628 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6629 u32 *features = reply->param;
6630
6631 if (qeth_setassparms_inspect_rc(cmd))
6632 return -EIO;
6633
6634 *features = cmd->data.setassparms.data.flags_32bit;
6635 return 0;
6636}
6637
6638static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6639 enum qeth_prot_versions prot)
6640{
6641 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
6642 NULL, prot);
6643}
6644
6645static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
6646 enum qeth_prot_versions prot, u8 *lp2lp)
6647{
6648 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6649 struct qeth_cmd_buffer *iob;
6650 struct qeth_ipa_caps caps;
6651 u32 features;
6652 int rc;
6653
6654
6655 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
6656 cstype == IPA_OUTBOUND_CHECKSUM)
6657 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6658
6659 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6660 prot);
6661 if (!iob)
6662 return -ENOMEM;
6663
6664 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
6665 if (rc)
6666 return rc;
6667
6668 if ((required_features & features) != required_features) {
6669 qeth_set_csum_off(card, cstype, prot);
6670 return -EOPNOTSUPP;
6671 }
6672
6673 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6674 SETASS_DATA_SIZEOF(flags_32bit),
6675 prot);
6676 if (!iob) {
6677 qeth_set_csum_off(card, cstype, prot);
6678 return -ENOMEM;
6679 }
6680
6681 if (features & QETH_IPA_CHECKSUM_LP2LP)
6682 required_features |= QETH_IPA_CHECKSUM_LP2LP;
6683 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
6684 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6685 if (rc) {
6686 qeth_set_csum_off(card, cstype, prot);
6687 return rc;
6688 }
6689
6690 if (!qeth_ipa_caps_supported(&caps, required_features) ||
6691 !qeth_ipa_caps_enabled(&caps, required_features)) {
6692 qeth_set_csum_off(card, cstype, prot);
6693 return -EOPNOTSUPP;
6694 }
6695
6696 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6697 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6698
6699 if (lp2lp)
6700 *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP);
6701
6702 return 0;
6703}
6704
6705static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6706 enum qeth_prot_versions prot, u8 *lp2lp)
6707{
6708 return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) :
6709 qeth_set_csum_off(card, cstype, prot);
6710}
6711
6712static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
6713 unsigned long data)
6714{
6715 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6716 struct qeth_tso_start_data *tso_data = reply->param;
6717
6718 if (qeth_setassparms_inspect_rc(cmd))
6719 return -EIO;
6720
6721 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6722 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6723 return 0;
6724}
6725
6726static int qeth_set_tso_off(struct qeth_card *card,
6727 enum qeth_prot_versions prot)
6728{
6729 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6730 IPA_CMD_ASS_STOP, NULL, prot);
6731}
6732
6733static int qeth_set_tso_on(struct qeth_card *card,
6734 enum qeth_prot_versions prot)
6735{
6736 struct qeth_tso_start_data tso_data;
6737 struct qeth_cmd_buffer *iob;
6738 struct qeth_ipa_caps caps;
6739 int rc;
6740
6741 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6742 IPA_CMD_ASS_START, 0, prot);
6743 if (!iob)
6744 return -ENOMEM;
6745
6746 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6747 if (rc)
6748 return rc;
6749
6750 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6751 qeth_set_tso_off(card, prot);
6752 return -EOPNOTSUPP;
6753 }
6754
6755 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6756 IPA_CMD_ASS_ENABLE,
6757 SETASS_DATA_SIZEOF(caps), prot);
6758 if (!iob) {
6759 qeth_set_tso_off(card, prot);
6760 return -ENOMEM;
6761 }
6762
6763
6764 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6765 QETH_IPA_LARGE_SEND_TCP;
6766 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6767 if (rc) {
6768 qeth_set_tso_off(card, prot);
6769 return rc;
6770 }
6771
6772 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6773 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6774 qeth_set_tso_off(card, prot);
6775 return -EOPNOTSUPP;
6776 }
6777
6778 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6779 tso_data.mss);
6780 return 0;
6781}
6782
6783static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6784 enum qeth_prot_versions prot)
6785{
6786 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6787}
6788
6789static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6790{
6791 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6792 int rc_ipv6;
6793
6794 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6795 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6796 QETH_PROT_IPV4, NULL);
6797 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6798
6799 return rc_ipv4;
6800
6801 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6802 QETH_PROT_IPV6, NULL);
6803
6804 if (on)
6805
6806 return (rc_ipv6) ? rc_ipv4 : 0;
6807
6808
6809 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6810}
6811
6812
6813
6814
6815
6816void qeth_enable_hw_features(struct net_device *dev)
6817{
6818 struct qeth_card *card = dev->ml_priv;
6819 netdev_features_t features;
6820
6821 features = dev->features;
6822
6823
6824
6825 dev->features &= ~dev->hw_features;
6826
6827 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6828 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6829 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6830 }
6831 netdev_update_features(dev);
6832 if (features != dev->features)
6833 dev_warn(&card->gdev->dev,
6834 "Device recovery failed to restore all offload features\n");
6835}
6836EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6837
6838static void qeth_check_restricted_features(struct qeth_card *card,
6839 netdev_features_t changed,
6840 netdev_features_t actual)
6841{
6842 netdev_features_t ipv6_features = NETIF_F_TSO6;
6843 netdev_features_t ipv4_features = NETIF_F_TSO;
6844
6845 if (!card->info.has_lp2lp_cso_v6)
6846 ipv6_features |= NETIF_F_IPV6_CSUM;
6847 if (!card->info.has_lp2lp_cso_v4)
6848 ipv4_features |= NETIF_F_IP_CSUM;
6849
6850 if ((changed & ipv6_features) && !(actual & ipv6_features))
6851 qeth_flush_local_addrs6(card);
6852 if ((changed & ipv4_features) && !(actual & ipv4_features))
6853 qeth_flush_local_addrs4(card);
6854}
6855
6856int qeth_set_features(struct net_device *dev, netdev_features_t features)
6857{
6858 struct qeth_card *card = dev->ml_priv;
6859 netdev_features_t changed = dev->features ^ features;
6860 int rc = 0;
6861
6862 QETH_CARD_TEXT(card, 2, "setfeat");
6863 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6864
6865 if ((changed & NETIF_F_IP_CSUM)) {
6866 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6867 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4,
6868 &card->info.has_lp2lp_cso_v4);
6869 if (rc)
6870 changed ^= NETIF_F_IP_CSUM;
6871 }
6872 if (changed & NETIF_F_IPV6_CSUM) {
6873 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6874 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6,
6875 &card->info.has_lp2lp_cso_v6);
6876 if (rc)
6877 changed ^= NETIF_F_IPV6_CSUM;
6878 }
6879 if (changed & NETIF_F_RXCSUM) {
6880 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6881 if (rc)
6882 changed ^= NETIF_F_RXCSUM;
6883 }
6884 if (changed & NETIF_F_TSO) {
6885 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6886 QETH_PROT_IPV4);
6887 if (rc)
6888 changed ^= NETIF_F_TSO;
6889 }
6890 if (changed & NETIF_F_TSO6) {
6891 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6892 QETH_PROT_IPV6);
6893 if (rc)
6894 changed ^= NETIF_F_TSO6;
6895 }
6896
6897 qeth_check_restricted_features(card, dev->features ^ features,
6898 dev->features ^ changed);
6899
6900
6901 if ((dev->features ^ features) == changed)
6902 return 0;
6903
6904 dev->features ^= changed;
6905 return -EIO;
6906}
6907EXPORT_SYMBOL_GPL(qeth_set_features);
6908
6909netdev_features_t qeth_fix_features(struct net_device *dev,
6910 netdev_features_t features)
6911{
6912 struct qeth_card *card = dev->ml_priv;
6913
6914 QETH_CARD_TEXT(card, 2, "fixfeat");
6915 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6916 features &= ~NETIF_F_IP_CSUM;
6917 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6918 features &= ~NETIF_F_IPV6_CSUM;
6919 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6920 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6921 features &= ~NETIF_F_RXCSUM;
6922 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6923 features &= ~NETIF_F_TSO;
6924 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6925 features &= ~NETIF_F_TSO6;
6926
6927 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6928 return features;
6929}
6930EXPORT_SYMBOL_GPL(qeth_fix_features);
6931
6932netdev_features_t qeth_features_check(struct sk_buff *skb,
6933 struct net_device *dev,
6934 netdev_features_t features)
6935{
6936 struct qeth_card *card = dev->ml_priv;
6937
6938
6939 if (skb->ip_summed == CHECKSUM_PARTIAL &&
6940 READ_ONCE(card->options.isolation) != ISOLATION_MODE_FWD) {
6941 netdev_features_t restricted = 0;
6942
6943 if (skb_is_gso(skb) && !netif_needs_gso(skb, features))
6944 restricted |= NETIF_F_ALL_TSO;
6945
6946 switch (vlan_get_protocol(skb)) {
6947 case htons(ETH_P_IP):
6948 if (!card->info.has_lp2lp_cso_v4)
6949 restricted |= NETIF_F_IP_CSUM;
6950
6951 if (restricted && qeth_next_hop_is_local_v4(card, skb))
6952 features &= ~restricted;
6953 break;
6954 case htons(ETH_P_IPV6):
6955 if (!card->info.has_lp2lp_cso_v6)
6956 restricted |= NETIF_F_IPV6_CSUM;
6957
6958 if (restricted && qeth_next_hop_is_local_v6(card, skb))
6959 features &= ~restricted;
6960 break;
6961 default:
6962 break;
6963 }
6964 }
6965
6966
6967
6968
6969
6970
6971
6972
6973 if (netif_needs_gso(skb, features)) {
6974
6975 unsigned int doffset = skb->data - skb_mac_header(skb);
6976 unsigned int hsize = skb_shinfo(skb)->gso_size;
6977 unsigned int hroom = skb_headroom(skb);
6978
6979
6980 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6981 features &= ~NETIF_F_SG;
6982 }
6983
6984 return vlan_features_check(skb, features);
6985}
6986EXPORT_SYMBOL_GPL(qeth_features_check);
6987
6988void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6989{
6990 struct qeth_card *card = dev->ml_priv;
6991 struct qeth_qdio_out_q *queue;
6992 unsigned int i;
6993
6994 QETH_CARD_TEXT(card, 5, "getstat");
6995
6996 stats->rx_packets = card->stats.rx_packets;
6997 stats->rx_bytes = card->stats.rx_bytes;
6998 stats->rx_errors = card->stats.rx_length_errors +
6999 card->stats.rx_frame_errors +
7000 card->stats.rx_fifo_errors;
7001 stats->rx_dropped = card->stats.rx_dropped_nomem +
7002 card->stats.rx_dropped_notsupp +
7003 card->stats.rx_dropped_runt;
7004 stats->multicast = card->stats.rx_multicast;
7005 stats->rx_length_errors = card->stats.rx_length_errors;
7006 stats->rx_frame_errors = card->stats.rx_frame_errors;
7007 stats->rx_fifo_errors = card->stats.rx_fifo_errors;
7008
7009 for (i = 0; i < card->qdio.no_out_queues; i++) {
7010 queue = card->qdio.out_qs[i];
7011
7012 stats->tx_packets += queue->stats.tx_packets;
7013 stats->tx_bytes += queue->stats.tx_bytes;
7014 stats->tx_errors += queue->stats.tx_errors;
7015 stats->tx_dropped += queue->stats.tx_dropped;
7016 }
7017}
7018EXPORT_SYMBOL_GPL(qeth_get_stats64);
7019
7020#define TC_IQD_UCAST 0
7021static void qeth_iqd_set_prio_tc_map(struct net_device *dev,
7022 unsigned int ucast_txqs)
7023{
7024 unsigned int prio;
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035 netdev_set_num_tc(dev, 1);
7036 netdev_set_tc_queue(dev, TC_IQD_UCAST, ucast_txqs,
7037 QETH_IQD_MIN_UCAST_TXQ);
7038
7039
7040 for (prio = 0; prio <= TC_BITMASK; prio++)
7041 netdev_set_prio_tc_map(dev, prio, TC_IQD_UCAST);
7042}
7043
7044int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count)
7045{
7046 struct net_device *dev = card->dev;
7047 int rc;
7048
7049
7050 if (IS_IQD(card))
7051 qeth_iqd_set_prio_tc_map(dev, count - 1);
7052
7053 rc = netif_set_real_num_tx_queues(dev, count);
7054
7055 if (rc && IS_IQD(card))
7056 qeth_iqd_set_prio_tc_map(dev, dev->real_num_tx_queues - 1);
7057
7058 return rc;
7059}
7060EXPORT_SYMBOL_GPL(qeth_set_real_num_tx_queues);
7061
7062u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
7063 u8 cast_type, struct net_device *sb_dev)
7064{
7065 u16 txq;
7066
7067 if (cast_type != RTN_UNICAST)
7068 return QETH_IQD_MCAST_TXQ;
7069 if (dev->real_num_tx_queues == QETH_IQD_MIN_TXQ)
7070 return QETH_IQD_MIN_UCAST_TXQ;
7071
7072 txq = netdev_pick_tx(dev, skb, sb_dev);
7073 return (txq == QETH_IQD_MCAST_TXQ) ? QETH_IQD_MIN_UCAST_TXQ : txq;
7074}
7075EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
7076
7077u16 qeth_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
7078 struct net_device *sb_dev)
7079{
7080 struct qeth_card *card = dev->ml_priv;
7081
7082 if (qeth_uses_tx_prio_queueing(card))
7083 return qeth_get_priority_queue(card, skb);
7084
7085 return netdev_pick_tx(dev, skb, sb_dev);
7086}
7087EXPORT_SYMBOL_GPL(qeth_osa_select_queue);
7088
7089int qeth_open(struct net_device *dev)
7090{
7091 struct qeth_card *card = dev->ml_priv;
7092 struct qeth_qdio_out_q *queue;
7093 unsigned int i;
7094
7095 QETH_CARD_TEXT(card, 4, "qethopen");
7096
7097 card->data.state = CH_STATE_UP;
7098 netif_tx_start_all_queues(dev);
7099
7100 local_bh_disable();
7101 qeth_for_each_output_queue(card, queue, i) {
7102 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
7103 QETH_NAPI_WEIGHT);
7104 napi_enable(&queue->napi);
7105 napi_schedule(&queue->napi);
7106 }
7107
7108 napi_enable(&card->napi);
7109 napi_schedule(&card->napi);
7110
7111 local_bh_enable();
7112
7113 return 0;
7114}
7115EXPORT_SYMBOL_GPL(qeth_open);
7116
7117int qeth_stop(struct net_device *dev)
7118{
7119 struct qeth_card *card = dev->ml_priv;
7120 struct qeth_qdio_out_q *queue;
7121 unsigned int i;
7122
7123 QETH_CARD_TEXT(card, 4, "qethstop");
7124
7125 napi_disable(&card->napi);
7126 cancel_delayed_work_sync(&card->buffer_reclaim_work);
7127 qdio_stop_irq(CARD_DDEV(card));
7128
7129
7130 qeth_for_each_output_queue(card, queue, i)
7131 napi_disable(&queue->napi);
7132
7133
7134 netif_tx_disable(dev);
7135
7136 qeth_for_each_output_queue(card, queue, i) {
7137 del_timer_sync(&queue->timer);
7138
7139 netif_napi_del(&queue->napi);
7140 }
7141
7142 return 0;
7143}
7144EXPORT_SYMBOL_GPL(qeth_stop);
7145
7146static int __init qeth_core_init(void)
7147{
7148 int rc;
7149
7150 pr_info("loading core functions\n");
7151
7152 qeth_debugfs_root = debugfs_create_dir("qeth", NULL);
7153
7154 rc = qeth_register_dbf_views();
7155 if (rc)
7156 goto dbf_err;
7157 qeth_core_root_dev = root_device_register("qeth");
7158 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
7159 if (rc)
7160 goto register_err;
7161 qeth_core_header_cache =
7162 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
7163 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
7164 0, NULL);
7165 if (!qeth_core_header_cache) {
7166 rc = -ENOMEM;
7167 goto slab_err;
7168 }
7169 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
7170 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
7171 if (!qeth_qdio_outbuf_cache) {
7172 rc = -ENOMEM;
7173 goto cqslab_err;
7174 }
7175
7176 qeth_qaob_cache = kmem_cache_create("qeth_qaob",
7177 sizeof(struct qaob),
7178 sizeof(struct qaob),
7179 0, NULL);
7180 if (!qeth_qaob_cache) {
7181 rc = -ENOMEM;
7182 goto qaob_err;
7183 }
7184
7185 rc = ccw_driver_register(&qeth_ccw_driver);
7186 if (rc)
7187 goto ccw_err;
7188 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
7189 if (rc)
7190 goto ccwgroup_err;
7191
7192 return 0;
7193
7194ccwgroup_err:
7195 ccw_driver_unregister(&qeth_ccw_driver);
7196ccw_err:
7197 kmem_cache_destroy(qeth_qaob_cache);
7198qaob_err:
7199 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7200cqslab_err:
7201 kmem_cache_destroy(qeth_core_header_cache);
7202slab_err:
7203 root_device_unregister(qeth_core_root_dev);
7204register_err:
7205 qeth_unregister_dbf_views();
7206dbf_err:
7207 debugfs_remove_recursive(qeth_debugfs_root);
7208 pr_err("Initializing the qeth device driver failed\n");
7209 return rc;
7210}
7211
7212static void __exit qeth_core_exit(void)
7213{
7214 qeth_clear_dbf_list();
7215 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
7216 ccw_driver_unregister(&qeth_ccw_driver);
7217 kmem_cache_destroy(qeth_qaob_cache);
7218 kmem_cache_destroy(qeth_qdio_outbuf_cache);
7219 kmem_cache_destroy(qeth_core_header_cache);
7220 root_device_unregister(qeth_core_root_dev);
7221 qeth_unregister_dbf_views();
7222 debugfs_remove_recursive(qeth_debugfs_root);
7223 pr_info("core functions removed\n");
7224}
7225
7226module_init(qeth_core_init);
7227module_exit(qeth_core_exit);
7228MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
7229MODULE_DESCRIPTION("qeth core functions");
7230MODULE_LICENSE("GPL");
7231
