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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/ip.h>
21#include <linux/tcp.h>
22#include <linux/mii.h>
23#include <linux/mm.h>
24#include <linux/kthread.h>
25#include <linux/slab.h>
26#include <linux/if_vlan.h>
27#include <linux/netdevice.h>
28#include <linux/netdev_features.h>
29#include <linux/skbuff.h>
30#include <linux/vmalloc.h>
31
32#include <net/iucv/af_iucv.h>
33#include <net/dsfield.h>
34
35#include <asm/ebcdic.h>
36#include <asm/chpid.h>
37#include <asm/io.h>
38#include <asm/sysinfo.h>
39#include <asm/diag.h>
40#include <asm/cio.h>
41#include <asm/ccwdev.h>
42#include <asm/cpcmd.h>
43
44#include "qeth_core.h"
45
46struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
47
48
49 [QETH_DBF_SETUP] = {"qeth_setup",
50 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
51 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
52 &debug_sprintf_view, NULL},
53 [QETH_DBF_CTRL] = {"qeth_control",
54 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
55};
56EXPORT_SYMBOL_GPL(qeth_dbf);
57
58struct kmem_cache *qeth_core_header_cache;
59EXPORT_SYMBOL_GPL(qeth_core_header_cache);
60static struct kmem_cache *qeth_qdio_outbuf_cache;
61
62static struct device *qeth_core_root_dev;
63static struct lock_class_key qdio_out_skb_queue_key;
64
65static void qeth_issue_next_read_cb(struct qeth_card *card,
66 struct qeth_cmd_buffer *iob);
67static void qeth_free_buffer_pool(struct qeth_card *);
68static int qeth_qdio_establish(struct qeth_card *);
69static void qeth_free_qdio_queues(struct qeth_card *card);
70static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
71 struct qeth_qdio_out_buffer *buf,
72 enum iucv_tx_notify notification);
73static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
74static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
75
76static void qeth_close_dev_handler(struct work_struct *work)
77{
78 struct qeth_card *card;
79
80 card = container_of(work, struct qeth_card, close_dev_work);
81 QETH_CARD_TEXT(card, 2, "cldevhdl");
82 ccwgroup_set_offline(card->gdev);
83}
84
85static const char *qeth_get_cardname(struct qeth_card *card)
86{
87 if (IS_VM_NIC(card)) {
88 switch (card->info.type) {
89 case QETH_CARD_TYPE_OSD:
90 return " Virtual NIC QDIO";
91 case QETH_CARD_TYPE_IQD:
92 return " Virtual NIC Hiper";
93 case QETH_CARD_TYPE_OSM:
94 return " Virtual NIC QDIO - OSM";
95 case QETH_CARD_TYPE_OSX:
96 return " Virtual NIC QDIO - OSX";
97 default:
98 return " unknown";
99 }
100 } else {
101 switch (card->info.type) {
102 case QETH_CARD_TYPE_OSD:
103 return " OSD Express";
104 case QETH_CARD_TYPE_IQD:
105 return " HiperSockets";
106 case QETH_CARD_TYPE_OSN:
107 return " OSN QDIO";
108 case QETH_CARD_TYPE_OSM:
109 return " OSM QDIO";
110 case QETH_CARD_TYPE_OSX:
111 return " OSX QDIO";
112 default:
113 return " unknown";
114 }
115 }
116 return " n/a";
117}
118
119
120const char *qeth_get_cardname_short(struct qeth_card *card)
121{
122 if (IS_VM_NIC(card)) {
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 return "Virt.NIC QDIO";
126 case QETH_CARD_TYPE_IQD:
127 return "Virt.NIC Hiper";
128 case QETH_CARD_TYPE_OSM:
129 return "Virt.NIC OSM";
130 case QETH_CARD_TYPE_OSX:
131 return "Virt.NIC OSX";
132 default:
133 return "unknown";
134 }
135 } else {
136 switch (card->info.type) {
137 case QETH_CARD_TYPE_OSD:
138 switch (card->info.link_type) {
139 case QETH_LINK_TYPE_FAST_ETH:
140 return "OSD_100";
141 case QETH_LINK_TYPE_HSTR:
142 return "HSTR";
143 case QETH_LINK_TYPE_GBIT_ETH:
144 return "OSD_1000";
145 case QETH_LINK_TYPE_10GBIT_ETH:
146 return "OSD_10GIG";
147 case QETH_LINK_TYPE_25GBIT_ETH:
148 return "OSD_25GIG";
149 case QETH_LINK_TYPE_LANE_ETH100:
150 return "OSD_FE_LANE";
151 case QETH_LINK_TYPE_LANE_TR:
152 return "OSD_TR_LANE";
153 case QETH_LINK_TYPE_LANE_ETH1000:
154 return "OSD_GbE_LANE";
155 case QETH_LINK_TYPE_LANE:
156 return "OSD_ATM_LANE";
157 default:
158 return "OSD_Express";
159 }
160 case QETH_CARD_TYPE_IQD:
161 return "HiperSockets";
162 case QETH_CARD_TYPE_OSN:
163 return "OSN";
164 case QETH_CARD_TYPE_OSM:
165 return "OSM_1000";
166 case QETH_CARD_TYPE_OSX:
167 return "OSX_10GIG";
168 default:
169 return "unknown";
170 }
171 }
172 return "n/a";
173}
174
175void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
176 int clear_start_mask)
177{
178 unsigned long flags;
179
180 spin_lock_irqsave(&card->thread_mask_lock, flags);
181 card->thread_allowed_mask = threads;
182 if (clear_start_mask)
183 card->thread_start_mask &= threads;
184 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
185 wake_up(&card->wait_q);
186}
187EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
188
189int qeth_threads_running(struct qeth_card *card, unsigned long threads)
190{
191 unsigned long flags;
192 int rc = 0;
193
194 spin_lock_irqsave(&card->thread_mask_lock, flags);
195 rc = (card->thread_running_mask & threads);
196 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
197 return rc;
198}
199EXPORT_SYMBOL_GPL(qeth_threads_running);
200
201void qeth_clear_working_pool_list(struct qeth_card *card)
202{
203 struct qeth_buffer_pool_entry *pool_entry, *tmp;
204
205 QETH_CARD_TEXT(card, 5, "clwrklst");
206 list_for_each_entry_safe(pool_entry, tmp,
207 &card->qdio.in_buf_pool.entry_list, list){
208 list_del(&pool_entry->list);
209 }
210}
211EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
212
213static int qeth_alloc_buffer_pool(struct qeth_card *card)
214{
215 struct qeth_buffer_pool_entry *pool_entry;
216 void *ptr;
217 int i, j;
218
219 QETH_CARD_TEXT(card, 5, "alocpool");
220 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
221 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
222 if (!pool_entry) {
223 qeth_free_buffer_pool(card);
224 return -ENOMEM;
225 }
226 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
227 ptr = (void *) __get_free_page(GFP_KERNEL);
228 if (!ptr) {
229 while (j > 0)
230 free_page((unsigned long)
231 pool_entry->elements[--j]);
232 kfree(pool_entry);
233 qeth_free_buffer_pool(card);
234 return -ENOMEM;
235 }
236 pool_entry->elements[j] = ptr;
237 }
238 list_add(&pool_entry->init_list,
239 &card->qdio.init_pool.entry_list);
240 }
241 return 0;
242}
243
244int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
245{
246 QETH_CARD_TEXT(card, 2, "realcbp");
247
248 if (card->state != CARD_STATE_DOWN)
249 return -EPERM;
250
251
252 qeth_clear_working_pool_list(card);
253 qeth_free_buffer_pool(card);
254 card->qdio.in_buf_pool.buf_count = bufcnt;
255 card->qdio.init_pool.buf_count = bufcnt;
256 return qeth_alloc_buffer_pool(card);
257}
258EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
259
260static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
261{
262 if (!q)
263 return;
264
265 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
266 kfree(q);
267}
268
269static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
270{
271 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
272 int i;
273
274 if (!q)
275 return NULL;
276
277 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
278 kfree(q);
279 return NULL;
280 }
281
282 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
283 q->bufs[i].buffer = q->qdio_bufs[i];
284
285 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
286 return q;
287}
288
289static int qeth_cq_init(struct qeth_card *card)
290{
291 int rc;
292
293 if (card->options.cq == QETH_CQ_ENABLED) {
294 QETH_CARD_TEXT(card, 2, "cqinit");
295 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
296 QDIO_MAX_BUFFERS_PER_Q);
297 card->qdio.c_q->next_buf_to_init = 127;
298 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
299 card->qdio.no_in_queues - 1, 0,
300 127);
301 if (rc) {
302 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
303 goto out;
304 }
305 }
306 rc = 0;
307out:
308 return rc;
309}
310
311static int qeth_alloc_cq(struct qeth_card *card)
312{
313 int rc;
314
315 if (card->options.cq == QETH_CQ_ENABLED) {
316 int i;
317 struct qdio_outbuf_state *outbuf_states;
318
319 QETH_CARD_TEXT(card, 2, "cqon");
320 card->qdio.c_q = qeth_alloc_qdio_queue();
321 if (!card->qdio.c_q) {
322 rc = -1;
323 goto kmsg_out;
324 }
325 card->qdio.no_in_queues = 2;
326 card->qdio.out_bufstates =
327 kcalloc(card->qdio.no_out_queues *
328 QDIO_MAX_BUFFERS_PER_Q,
329 sizeof(struct qdio_outbuf_state),
330 GFP_KERNEL);
331 outbuf_states = card->qdio.out_bufstates;
332 if (outbuf_states == NULL) {
333 rc = -1;
334 goto free_cq_out;
335 }
336 for (i = 0; i < card->qdio.no_out_queues; ++i) {
337 card->qdio.out_qs[i]->bufstates = outbuf_states;
338 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
339 }
340 } else {
341 QETH_CARD_TEXT(card, 2, "nocq");
342 card->qdio.c_q = NULL;
343 card->qdio.no_in_queues = 1;
344 }
345 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
346 rc = 0;
347out:
348 return rc;
349free_cq_out:
350 qeth_free_qdio_queue(card->qdio.c_q);
351 card->qdio.c_q = NULL;
352kmsg_out:
353 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
354 goto out;
355}
356
357static void qeth_free_cq(struct qeth_card *card)
358{
359 if (card->qdio.c_q) {
360 --card->qdio.no_in_queues;
361 qeth_free_qdio_queue(card->qdio.c_q);
362 card->qdio.c_q = NULL;
363 }
364 kfree(card->qdio.out_bufstates);
365 card->qdio.out_bufstates = NULL;
366}
367
368static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
369 int delayed)
370{
371 enum iucv_tx_notify n;
372
373 switch (sbalf15) {
374 case 0:
375 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
376 break;
377 case 4:
378 case 16:
379 case 17:
380 case 18:
381 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
382 TX_NOTIFY_UNREACHABLE;
383 break;
384 default:
385 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
386 TX_NOTIFY_GENERALERROR;
387 break;
388 }
389
390 return n;
391}
392
393static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
394 int forced_cleanup)
395{
396 if (q->card->options.cq != QETH_CQ_ENABLED)
397 return;
398
399 if (q->bufs[bidx]->next_pending != NULL) {
400 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
401 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
402
403 while (c) {
404 if (forced_cleanup ||
405 atomic_read(&c->state) ==
406 QETH_QDIO_BUF_HANDLED_DELAYED) {
407 struct qeth_qdio_out_buffer *f = c;
408 QETH_CARD_TEXT(f->q->card, 5, "fp");
409 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
410
411
412
413 qeth_release_skbs(c);
414
415 c = f->next_pending;
416 WARN_ON_ONCE(head->next_pending != f);
417 head->next_pending = c;
418 kmem_cache_free(qeth_qdio_outbuf_cache, f);
419 } else {
420 head = c;
421 c = c->next_pending;
422 }
423
424 }
425 }
426 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
427 QETH_QDIO_BUF_HANDLED_DELAYED)) {
428
429 qeth_init_qdio_out_buf(q, bidx);
430 QETH_CARD_TEXT(q->card, 2, "clprecov");
431 }
432}
433
434
435static void qeth_qdio_handle_aob(struct qeth_card *card,
436 unsigned long phys_aob_addr)
437{
438 struct qaob *aob;
439 struct qeth_qdio_out_buffer *buffer;
440 enum iucv_tx_notify notification;
441 unsigned int i;
442
443 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
444 QETH_CARD_TEXT(card, 5, "haob");
445 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
446 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
447 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
448
449 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
450 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
451 notification = TX_NOTIFY_OK;
452 } else {
453 WARN_ON_ONCE(atomic_read(&buffer->state) !=
454 QETH_QDIO_BUF_PENDING);
455 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
456 notification = TX_NOTIFY_DELAYED_OK;
457 }
458
459 if (aob->aorc != 0) {
460 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
461 notification = qeth_compute_cq_notification(aob->aorc, 1);
462 }
463 qeth_notify_skbs(buffer->q, buffer, notification);
464
465
466
467
468 for (i = 0;
469 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
470 i++) {
471 if (aob->sba[i] && buffer->is_header[i])
472 kmem_cache_free(qeth_core_header_cache,
473 (void *) aob->sba[i]);
474 }
475 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
476
477 qdio_release_aob(aob);
478}
479
480static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
481{
482 return card->options.cq == QETH_CQ_ENABLED &&
483 card->qdio.c_q != NULL &&
484 queue != 0 &&
485 queue == card->qdio.no_in_queues - 1;
486}
487
488static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
489 void *data)
490{
491 ccw->cmd_code = cmd_code;
492 ccw->flags = flags | CCW_FLAG_SLI;
493 ccw->count = len;
494 ccw->cda = (__u32) __pa(data);
495}
496
497static int __qeth_issue_next_read(struct qeth_card *card)
498{
499 struct qeth_cmd_buffer *iob = card->read_cmd;
500 struct qeth_channel *channel = iob->channel;
501 struct ccw1 *ccw = __ccw_from_cmd(iob);
502 int rc;
503
504 QETH_CARD_TEXT(card, 5, "issnxrd");
505 if (channel->state != CH_STATE_UP)
506 return -EIO;
507
508 memset(iob->data, 0, iob->length);
509 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
510 iob->callback = qeth_issue_next_read_cb;
511
512 qeth_get_cmd(iob);
513
514 QETH_CARD_TEXT(card, 6, "noirqpnd");
515 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
516 if (rc) {
517 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
518 rc, CARD_DEVID(card));
519 atomic_set(&channel->irq_pending, 0);
520 qeth_put_cmd(iob);
521 card->read_or_write_problem = 1;
522 qeth_schedule_recovery(card);
523 wake_up(&card->wait_q);
524 }
525 return rc;
526}
527
528static int qeth_issue_next_read(struct qeth_card *card)
529{
530 int ret;
531
532 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
533 ret = __qeth_issue_next_read(card);
534 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
535
536 return ret;
537}
538
539static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
540{
541 struct qeth_reply *reply;
542
543 reply = kzalloc(sizeof(*reply), GFP_KERNEL);
544 if (reply) {
545 refcount_set(&reply->refcnt, 1);
546 init_completion(&reply->received);
547 spin_lock_init(&reply->lock);
548 }
549 return reply;
550}
551
552static void qeth_get_reply(struct qeth_reply *reply)
553{
554 refcount_inc(&reply->refcnt);
555}
556
557static void qeth_put_reply(struct qeth_reply *reply)
558{
559 if (refcount_dec_and_test(&reply->refcnt))
560 kfree(reply);
561}
562
563static void qeth_enqueue_reply(struct qeth_card *card, struct qeth_reply *reply)
564{
565 spin_lock_irq(&card->lock);
566 list_add_tail(&reply->list, &card->cmd_waiter_list);
567 spin_unlock_irq(&card->lock);
568}
569
570static void qeth_dequeue_reply(struct qeth_card *card, struct qeth_reply *reply)
571{
572 spin_lock_irq(&card->lock);
573 list_del(&reply->list);
574 spin_unlock_irq(&card->lock);
575}
576
577void qeth_notify_reply(struct qeth_reply *reply, int reason)
578{
579 reply->rc = reason;
580 complete(&reply->received);
581}
582EXPORT_SYMBOL_GPL(qeth_notify_reply);
583
584static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
585 struct qeth_card *card)
586{
587 const char *ipa_name;
588 int com = cmd->hdr.command;
589 ipa_name = qeth_get_ipa_cmd_name(com);
590
591 if (rc)
592 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
593 ipa_name, com, CARD_DEVID(card), rc,
594 qeth_get_ipa_msg(rc));
595 else
596 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
597 ipa_name, com, CARD_DEVID(card));
598}
599
600static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
601 struct qeth_ipa_cmd *cmd)
602{
603 QETH_CARD_TEXT(card, 5, "chkipad");
604
605 if (IS_IPA_REPLY(cmd)) {
606 if (cmd->hdr.command != IPA_CMD_SETCCID &&
607 cmd->hdr.command != IPA_CMD_DELCCID &&
608 cmd->hdr.command != IPA_CMD_MODCCID &&
609 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
610 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
611 return cmd;
612 }
613
614
615 switch (cmd->hdr.command) {
616 case IPA_CMD_STOPLAN:
617 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
618 dev_err(&card->gdev->dev,
619 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
620 QETH_CARD_IFNAME(card));
621 schedule_work(&card->close_dev_work);
622 } else {
623 dev_warn(&card->gdev->dev,
624 "The link for interface %s on CHPID 0x%X failed\n",
625 QETH_CARD_IFNAME(card), card->info.chpid);
626 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
627 netif_carrier_off(card->dev);
628 }
629 return NULL;
630 case IPA_CMD_STARTLAN:
631 dev_info(&card->gdev->dev,
632 "The link for %s on CHPID 0x%X has been restored\n",
633 QETH_CARD_IFNAME(card), card->info.chpid);
634 if (card->info.hwtrap)
635 card->info.hwtrap = 2;
636 qeth_schedule_recovery(card);
637 return NULL;
638 case IPA_CMD_SETBRIDGEPORT_IQD:
639 case IPA_CMD_SETBRIDGEPORT_OSA:
640 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
641 if (card->discipline->control_event_handler(card, cmd))
642 return cmd;
643 return NULL;
644 case IPA_CMD_MODCCID:
645 return cmd;
646 case IPA_CMD_REGISTER_LOCAL_ADDR:
647 QETH_CARD_TEXT(card, 3, "irla");
648 return NULL;
649 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
650 QETH_CARD_TEXT(card, 3, "urla");
651 return NULL;
652 default:
653 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
654 return cmd;
655 }
656}
657
658void qeth_clear_ipacmd_list(struct qeth_card *card)
659{
660 struct qeth_reply *reply;
661 unsigned long flags;
662
663 QETH_CARD_TEXT(card, 4, "clipalst");
664
665 spin_lock_irqsave(&card->lock, flags);
666 list_for_each_entry(reply, &card->cmd_waiter_list, list)
667 qeth_notify_reply(reply, -EIO);
668 spin_unlock_irqrestore(&card->lock, flags);
669}
670EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
671
672static int qeth_check_idx_response(struct qeth_card *card,
673 unsigned char *buffer)
674{
675 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
676 if ((buffer[2] & 0xc0) == 0xc0) {
677 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
678 buffer[4]);
679 QETH_CARD_TEXT(card, 2, "ckidxres");
680 QETH_CARD_TEXT(card, 2, " idxterm");
681 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
682 if (buffer[4] == 0xf6) {
683 dev_err(&card->gdev->dev,
684 "The qeth device is not configured "
685 "for the OSI layer required by z/VM\n");
686 return -EPERM;
687 }
688 return -EIO;
689 }
690 return 0;
691}
692
693void qeth_put_cmd(struct qeth_cmd_buffer *iob)
694{
695 if (refcount_dec_and_test(&iob->ref_count)) {
696 if (iob->reply)
697 qeth_put_reply(iob->reply);
698 kfree(iob->data);
699 kfree(iob);
700 }
701}
702EXPORT_SYMBOL_GPL(qeth_put_cmd);
703
704static void qeth_release_buffer_cb(struct qeth_card *card,
705 struct qeth_cmd_buffer *iob)
706{
707 qeth_put_cmd(iob);
708}
709
710static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
711{
712 struct qeth_reply *reply = iob->reply;
713
714 if (reply)
715 qeth_notify_reply(reply, rc);
716 qeth_put_cmd(iob);
717}
718
719struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
720 unsigned int length, unsigned int ccws,
721 long timeout)
722{
723 struct qeth_cmd_buffer *iob;
724
725 if (length > QETH_BUFSIZE)
726 return NULL;
727
728 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
729 if (!iob)
730 return NULL;
731
732 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
733 GFP_KERNEL | GFP_DMA);
734 if (!iob->data) {
735 kfree(iob);
736 return NULL;
737 }
738
739 refcount_set(&iob->ref_count, 1);
740 iob->channel = channel;
741 iob->timeout = timeout;
742 iob->length = length;
743 return iob;
744}
745EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
746
747static void qeth_issue_next_read_cb(struct qeth_card *card,
748 struct qeth_cmd_buffer *iob)
749{
750 struct qeth_ipa_cmd *cmd = NULL;
751 struct qeth_reply *reply = NULL;
752 struct qeth_reply *r;
753 unsigned long flags;
754 int rc = 0;
755
756 QETH_CARD_TEXT(card, 4, "sndctlcb");
757 rc = qeth_check_idx_response(card, iob->data);
758 switch (rc) {
759 case 0:
760 break;
761 case -EIO:
762 qeth_clear_ipacmd_list(card);
763 qeth_schedule_recovery(card);
764
765 default:
766 goto out;
767 }
768
769 if (IS_IPA(iob->data)) {
770 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
771 cmd = qeth_check_ipa_data(card, cmd);
772 if (!cmd)
773 goto out;
774 if (IS_OSN(card) && card->osn_info.assist_cb &&
775 cmd->hdr.command != IPA_CMD_STARTLAN) {
776 card->osn_info.assist_cb(card->dev, cmd);
777 goto out;
778 }
779 } else {
780
781 if (card->state != CARD_STATE_DOWN)
782 goto out;
783 }
784
785
786 spin_lock_irqsave(&card->lock, flags);
787 list_for_each_entry(r, &card->cmd_waiter_list, list) {
788 if ((r->seqno == QETH_IDX_COMMAND_SEQNO) ||
789 (cmd && (r->seqno == cmd->hdr.seqno))) {
790 reply = r;
791
792 qeth_get_reply(reply);
793 break;
794 }
795 }
796 spin_unlock_irqrestore(&card->lock, flags);
797
798 if (!reply)
799 goto out;
800
801 if (!reply->callback) {
802 rc = 0;
803 goto no_callback;
804 }
805
806 spin_lock_irqsave(&reply->lock, flags);
807 if (reply->rc) {
808
809 rc = reply->rc;
810 } else {
811 if (cmd) {
812 reply->offset = (u16)((char *)cmd - (char *)iob->data);
813 rc = reply->callback(card, reply, (unsigned long)cmd);
814 } else {
815 rc = reply->callback(card, reply, (unsigned long)iob);
816 }
817 }
818 spin_unlock_irqrestore(&reply->lock, flags);
819
820no_callback:
821 if (rc <= 0)
822 qeth_notify_reply(reply, rc);
823 qeth_put_reply(reply);
824
825out:
826 memcpy(&card->seqno.pdu_hdr_ack,
827 QETH_PDU_HEADER_SEQ_NO(iob->data),
828 QETH_SEQ_NO_LENGTH);
829 qeth_put_cmd(iob);
830 __qeth_issue_next_read(card);
831}
832
833static int qeth_set_thread_start_bit(struct qeth_card *card,
834 unsigned long thread)
835{
836 unsigned long flags;
837
838 spin_lock_irqsave(&card->thread_mask_lock, flags);
839 if (!(card->thread_allowed_mask & thread) ||
840 (card->thread_start_mask & thread)) {
841 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
842 return -EPERM;
843 }
844 card->thread_start_mask |= thread;
845 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
846 return 0;
847}
848
849void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
850{
851 unsigned long flags;
852
853 spin_lock_irqsave(&card->thread_mask_lock, flags);
854 card->thread_start_mask &= ~thread;
855 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
856 wake_up(&card->wait_q);
857}
858EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
859
860void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
861{
862 unsigned long flags;
863
864 spin_lock_irqsave(&card->thread_mask_lock, flags);
865 card->thread_running_mask &= ~thread;
866 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
867 wake_up_all(&card->wait_q);
868}
869EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
870
871static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
872{
873 unsigned long flags;
874 int rc = 0;
875
876 spin_lock_irqsave(&card->thread_mask_lock, flags);
877 if (card->thread_start_mask & thread) {
878 if ((card->thread_allowed_mask & thread) &&
879 !(card->thread_running_mask & thread)) {
880 rc = 1;
881 card->thread_start_mask &= ~thread;
882 card->thread_running_mask |= thread;
883 } else
884 rc = -EPERM;
885 }
886 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
887 return rc;
888}
889
890int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
891{
892 int rc = 0;
893
894 wait_event(card->wait_q,
895 (rc = __qeth_do_run_thread(card, thread)) >= 0);
896 return rc;
897}
898EXPORT_SYMBOL_GPL(qeth_do_run_thread);
899
900void qeth_schedule_recovery(struct qeth_card *card)
901{
902 QETH_CARD_TEXT(card, 2, "startrec");
903 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
904 schedule_work(&card->kernel_thread_starter);
905}
906EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
907
908static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
909 struct irb *irb)
910{
911 int dstat, cstat;
912 char *sense;
913
914 sense = (char *) irb->ecw;
915 cstat = irb->scsw.cmd.cstat;
916 dstat = irb->scsw.cmd.dstat;
917
918 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
919 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
920 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
921 QETH_CARD_TEXT(card, 2, "CGENCHK");
922 dev_warn(&cdev->dev, "The qeth device driver "
923 "failed to recover an error on the device\n");
924 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
925 CCW_DEVID(cdev), dstat, cstat);
926 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
927 16, 1, irb, 64, 1);
928 return 1;
929 }
930
931 if (dstat & DEV_STAT_UNIT_CHECK) {
932 if (sense[SENSE_RESETTING_EVENT_BYTE] &
933 SENSE_RESETTING_EVENT_FLAG) {
934 QETH_CARD_TEXT(card, 2, "REVIND");
935 return 1;
936 }
937 if (sense[SENSE_COMMAND_REJECT_BYTE] &
938 SENSE_COMMAND_REJECT_FLAG) {
939 QETH_CARD_TEXT(card, 2, "CMDREJi");
940 return 1;
941 }
942 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
943 QETH_CARD_TEXT(card, 2, "AFFE");
944 return 1;
945 }
946 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
947 QETH_CARD_TEXT(card, 2, "ZEROSEN");
948 return 0;
949 }
950 QETH_CARD_TEXT(card, 2, "DGENCHK");
951 return 1;
952 }
953 return 0;
954}
955
956static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
957 struct irb *irb)
958{
959 if (!IS_ERR(irb))
960 return 0;
961
962 switch (PTR_ERR(irb)) {
963 case -EIO:
964 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
965 CCW_DEVID(cdev));
966 QETH_CARD_TEXT(card, 2, "ckirberr");
967 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
968 return -EIO;
969 case -ETIMEDOUT:
970 dev_warn(&cdev->dev, "A hardware operation timed out"
971 " on the device\n");
972 QETH_CARD_TEXT(card, 2, "ckirberr");
973 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
974 return -ETIMEDOUT;
975 default:
976 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
977 PTR_ERR(irb), CCW_DEVID(cdev));
978 QETH_CARD_TEXT(card, 2, "ckirberr");
979 QETH_CARD_TEXT(card, 2, " rc???");
980 return PTR_ERR(irb);
981 }
982}
983
984static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
985 struct irb *irb)
986{
987 int rc;
988 int cstat, dstat;
989 struct qeth_cmd_buffer *iob = NULL;
990 struct ccwgroup_device *gdev;
991 struct qeth_channel *channel;
992 struct qeth_card *card;
993
994
995 gdev = dev_get_drvdata(&cdev->dev);
996 card = dev_get_drvdata(&gdev->dev);
997 if (!card)
998 return;
999
1000 QETH_CARD_TEXT(card, 5, "irq");
1001
1002 if (card->read.ccwdev == cdev) {
1003 channel = &card->read;
1004 QETH_CARD_TEXT(card, 5, "read");
1005 } else if (card->write.ccwdev == cdev) {
1006 channel = &card->write;
1007 QETH_CARD_TEXT(card, 5, "write");
1008 } else {
1009 channel = &card->data;
1010 QETH_CARD_TEXT(card, 5, "data");
1011 }
1012
1013 if (qeth_intparm_is_iob(intparm))
1014 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1015
1016 rc = qeth_check_irb_error(card, cdev, irb);
1017 if (rc) {
1018
1019 if (iob)
1020 qeth_cancel_cmd(iob, rc);
1021 atomic_set(&channel->irq_pending, 0);
1022 wake_up(&card->wait_q);
1023 return;
1024 }
1025
1026 atomic_set(&channel->irq_pending, 0);
1027
1028 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1029 channel->state = CH_STATE_STOPPED;
1030
1031 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1032 channel->state = CH_STATE_HALTED;
1033
1034 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1035 QETH_CARD_TEXT(card, 6, "clrchpar");
1036
1037 intparm = 0;
1038 }
1039 if (intparm == QETH_HALT_CHANNEL_PARM) {
1040 QETH_CARD_TEXT(card, 6, "hltchpar");
1041
1042 intparm = 0;
1043 }
1044
1045 cstat = irb->scsw.cmd.cstat;
1046 dstat = irb->scsw.cmd.dstat;
1047
1048 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1049 (dstat & DEV_STAT_UNIT_CHECK) ||
1050 (cstat)) {
1051 if (irb->esw.esw0.erw.cons) {
1052 dev_warn(&channel->ccwdev->dev,
1053 "The qeth device driver failed to recover "
1054 "an error on the device\n");
1055 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1056 CCW_DEVID(channel->ccwdev), cstat,
1057 dstat);
1058 print_hex_dump(KERN_WARNING, "qeth: irb ",
1059 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1060 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1061 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1062 }
1063
1064 rc = qeth_get_problem(card, cdev, irb);
1065 if (rc) {
1066 card->read_or_write_problem = 1;
1067 if (iob)
1068 qeth_cancel_cmd(iob, rc);
1069 qeth_clear_ipacmd_list(card);
1070 qeth_schedule_recovery(card);
1071 goto out;
1072 }
1073 }
1074
1075 if (iob && iob->callback)
1076 iob->callback(card, iob);
1077
1078out:
1079 wake_up(&card->wait_q);
1080 return;
1081}
1082
1083static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1084 struct qeth_qdio_out_buffer *buf,
1085 enum iucv_tx_notify notification)
1086{
1087 struct sk_buff *skb;
1088
1089 skb_queue_walk(&buf->skb_list, skb) {
1090 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1091 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1092 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1093 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1094 }
1095}
1096
1097static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1098{
1099 struct sk_buff *skb;
1100
1101
1102 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1103
1104 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1105 qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR);
1106
1107 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL)
1108 consume_skb(skb);
1109}
1110
1111static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1112 struct qeth_qdio_out_buffer *buf)
1113{
1114 int i;
1115
1116
1117 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1118 atomic_dec(&queue->set_pci_flags_count);
1119
1120 qeth_release_skbs(buf);
1121
1122 for (i = 0; i < queue->max_elements; ++i) {
1123 if (buf->buffer->element[i].addr && buf->is_header[i])
1124 kmem_cache_free(qeth_core_header_cache,
1125 buf->buffer->element[i].addr);
1126 buf->is_header[i] = 0;
1127 }
1128
1129 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1130 buf->next_element_to_fill = 0;
1131 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1132}
1133
1134static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1135{
1136 int j;
1137
1138 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1139 if (!q->bufs[j])
1140 continue;
1141 qeth_cleanup_handled_pending(q, j, 1);
1142 qeth_clear_output_buffer(q, q->bufs[j]);
1143 if (free) {
1144 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1145 q->bufs[j] = NULL;
1146 }
1147 }
1148}
1149
1150void qeth_drain_output_queues(struct qeth_card *card)
1151{
1152 int i;
1153
1154 QETH_CARD_TEXT(card, 2, "clearqdbf");
1155
1156 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1157 if (card->qdio.out_qs[i])
1158 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1159 }
1160}
1161EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
1162
1163static void qeth_free_buffer_pool(struct qeth_card *card)
1164{
1165 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1166 int i = 0;
1167 list_for_each_entry_safe(pool_entry, tmp,
1168 &card->qdio.init_pool.entry_list, init_list){
1169 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1170 free_page((unsigned long)pool_entry->elements[i]);
1171 list_del(&pool_entry->init_list);
1172 kfree(pool_entry);
1173 }
1174}
1175
1176static void qeth_clean_channel(struct qeth_channel *channel)
1177{
1178 struct ccw_device *cdev = channel->ccwdev;
1179
1180 QETH_DBF_TEXT(SETUP, 2, "freech");
1181
1182 spin_lock_irq(get_ccwdev_lock(cdev));
1183 cdev->handler = NULL;
1184 spin_unlock_irq(get_ccwdev_lock(cdev));
1185}
1186
1187static void qeth_setup_channel(struct qeth_channel *channel)
1188{
1189 struct ccw_device *cdev = channel->ccwdev;
1190
1191 QETH_DBF_TEXT(SETUP, 2, "setupch");
1192
1193 channel->state = CH_STATE_DOWN;
1194 atomic_set(&channel->irq_pending, 0);
1195
1196 spin_lock_irq(get_ccwdev_lock(cdev));
1197 cdev->handler = qeth_irq;
1198 spin_unlock_irq(get_ccwdev_lock(cdev));
1199}
1200
1201static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1202{
1203 unsigned int count = single ? 1 : card->dev->num_tx_queues;
1204 int rc;
1205
1206 rtnl_lock();
1207 rc = netif_set_real_num_tx_queues(card->dev, count);
1208 rtnl_unlock();
1209
1210 if (rc)
1211 return rc;
1212
1213 if (card->qdio.no_out_queues == count)
1214 return 0;
1215
1216 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1217 qeth_free_qdio_queues(card);
1218
1219 if (count == 1)
1220 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1221
1222 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE;
1223 card->qdio.no_out_queues = count;
1224 return 0;
1225}
1226
1227static int qeth_update_from_chp_desc(struct qeth_card *card)
1228{
1229 struct ccw_device *ccwdev;
1230 struct channel_path_desc_fmt0 *chp_dsc;
1231 int rc = 0;
1232
1233 QETH_CARD_TEXT(card, 2, "chp_desc");
1234
1235 ccwdev = card->data.ccwdev;
1236 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1237 if (!chp_dsc)
1238 return -ENOMEM;
1239
1240 card->info.func_level = 0x4100 + chp_dsc->desc;
1241
1242 if (IS_OSD(card) || IS_OSX(card))
1243
1244 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1245
1246 kfree(chp_dsc);
1247 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1248 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1249 return rc;
1250}
1251
1252static void qeth_init_qdio_info(struct qeth_card *card)
1253{
1254 QETH_CARD_TEXT(card, 4, "intqdinf");
1255 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1256 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1257 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1258
1259
1260 card->qdio.no_in_queues = 1;
1261 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1262 if (IS_IQD(card))
1263 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1264 else
1265 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1266 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1267 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1268 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1269}
1270
1271static void qeth_set_initial_options(struct qeth_card *card)
1272{
1273 card->options.route4.type = NO_ROUTER;
1274 card->options.route6.type = NO_ROUTER;
1275 card->options.rx_sg_cb = QETH_RX_SG_CB;
1276 card->options.isolation = ISOLATION_MODE_NONE;
1277 card->options.cq = QETH_CQ_DISABLED;
1278 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1279}
1280
1281static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1282{
1283 unsigned long flags;
1284 int rc = 0;
1285
1286 spin_lock_irqsave(&card->thread_mask_lock, flags);
1287 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1288 (u8) card->thread_start_mask,
1289 (u8) card->thread_allowed_mask,
1290 (u8) card->thread_running_mask);
1291 rc = (card->thread_start_mask & thread);
1292 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1293 return rc;
1294}
1295
1296static void qeth_start_kernel_thread(struct work_struct *work)
1297{
1298 struct task_struct *ts;
1299 struct qeth_card *card = container_of(work, struct qeth_card,
1300 kernel_thread_starter);
1301 QETH_CARD_TEXT(card , 2, "strthrd");
1302
1303 if (card->read.state != CH_STATE_UP &&
1304 card->write.state != CH_STATE_UP)
1305 return;
1306 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1307 ts = kthread_run(card->discipline->recover, (void *)card,
1308 "qeth_recover");
1309 if (IS_ERR(ts)) {
1310 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1311 qeth_clear_thread_running_bit(card,
1312 QETH_RECOVER_THREAD);
1313 }
1314 }
1315}
1316
1317static void qeth_buffer_reclaim_work(struct work_struct *);
1318static void qeth_setup_card(struct qeth_card *card)
1319{
1320 QETH_CARD_TEXT(card, 2, "setupcrd");
1321
1322 card->info.type = CARD_RDEV(card)->id.driver_info;
1323 card->state = CARD_STATE_DOWN;
1324 spin_lock_init(&card->lock);
1325 spin_lock_init(&card->thread_mask_lock);
1326 mutex_init(&card->conf_mutex);
1327 mutex_init(&card->discipline_mutex);
1328 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1329 INIT_LIST_HEAD(&card->cmd_waiter_list);
1330 init_waitqueue_head(&card->wait_q);
1331 qeth_set_initial_options(card);
1332
1333 INIT_LIST_HEAD(&card->ipato.entries);
1334 qeth_init_qdio_info(card);
1335 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1336 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1337}
1338
1339static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1340{
1341 struct qeth_card *card = container_of(slr, struct qeth_card,
1342 qeth_service_level);
1343 if (card->info.mcl_level[0])
1344 seq_printf(m, "qeth: %s firmware level %s\n",
1345 CARD_BUS_ID(card), card->info.mcl_level);
1346}
1347
1348static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1349{
1350 struct qeth_card *card;
1351
1352 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1353 card = kzalloc(sizeof(*card), GFP_KERNEL);
1354 if (!card)
1355 goto out;
1356 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1357
1358 card->gdev = gdev;
1359 dev_set_drvdata(&gdev->dev, card);
1360 CARD_RDEV(card) = gdev->cdev[0];
1361 CARD_WDEV(card) = gdev->cdev[1];
1362 CARD_DDEV(card) = gdev->cdev[2];
1363
1364 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1365 dev_name(&gdev->dev));
1366 if (!card->event_wq)
1367 goto out_wq;
1368
1369 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1370 if (!card->read_cmd)
1371 goto out_read_cmd;
1372
1373 qeth_setup_channel(&card->read);
1374 qeth_setup_channel(&card->write);
1375 qeth_setup_channel(&card->data);
1376 card->qeth_service_level.seq_print = qeth_core_sl_print;
1377 register_service_level(&card->qeth_service_level);
1378 return card;
1379
1380out_read_cmd:
1381 destroy_workqueue(card->event_wq);
1382out_wq:
1383 dev_set_drvdata(&gdev->dev, NULL);
1384 kfree(card);
1385out:
1386 return NULL;
1387}
1388
1389static int qeth_clear_channel(struct qeth_card *card,
1390 struct qeth_channel *channel)
1391{
1392 int rc;
1393
1394 QETH_CARD_TEXT(card, 3, "clearch");
1395 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1396 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1397 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1398
1399 if (rc)
1400 return rc;
1401 rc = wait_event_interruptible_timeout(card->wait_q,
1402 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1403 if (rc == -ERESTARTSYS)
1404 return rc;
1405 if (channel->state != CH_STATE_STOPPED)
1406 return -ETIME;
1407 channel->state = CH_STATE_DOWN;
1408 return 0;
1409}
1410
1411static int qeth_halt_channel(struct qeth_card *card,
1412 struct qeth_channel *channel)
1413{
1414 int rc;
1415
1416 QETH_CARD_TEXT(card, 3, "haltch");
1417 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1418 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1419 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1420
1421 if (rc)
1422 return rc;
1423 rc = wait_event_interruptible_timeout(card->wait_q,
1424 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1425 if (rc == -ERESTARTSYS)
1426 return rc;
1427 if (channel->state != CH_STATE_HALTED)
1428 return -ETIME;
1429 return 0;
1430}
1431
1432static int qeth_halt_channels(struct qeth_card *card)
1433{
1434 int rc1 = 0, rc2 = 0, rc3 = 0;
1435
1436 QETH_CARD_TEXT(card, 3, "haltchs");
1437 rc1 = qeth_halt_channel(card, &card->read);
1438 rc2 = qeth_halt_channel(card, &card->write);
1439 rc3 = qeth_halt_channel(card, &card->data);
1440 if (rc1)
1441 return rc1;
1442 if (rc2)
1443 return rc2;
1444 return rc3;
1445}
1446
1447static int qeth_clear_channels(struct qeth_card *card)
1448{
1449 int rc1 = 0, rc2 = 0, rc3 = 0;
1450
1451 QETH_CARD_TEXT(card, 3, "clearchs");
1452 rc1 = qeth_clear_channel(card, &card->read);
1453 rc2 = qeth_clear_channel(card, &card->write);
1454 rc3 = qeth_clear_channel(card, &card->data);
1455 if (rc1)
1456 return rc1;
1457 if (rc2)
1458 return rc2;
1459 return rc3;
1460}
1461
1462static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1463{
1464 int rc = 0;
1465
1466 QETH_CARD_TEXT(card, 3, "clhacrd");
1467
1468 if (halt)
1469 rc = qeth_halt_channels(card);
1470 if (rc)
1471 return rc;
1472 return qeth_clear_channels(card);
1473}
1474
1475int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1476{
1477 int rc = 0;
1478
1479 QETH_CARD_TEXT(card, 3, "qdioclr");
1480 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1481 QETH_QDIO_CLEANING)) {
1482 case QETH_QDIO_ESTABLISHED:
1483 if (IS_IQD(card))
1484 rc = qdio_shutdown(CARD_DDEV(card),
1485 QDIO_FLAG_CLEANUP_USING_HALT);
1486 else
1487 rc = qdio_shutdown(CARD_DDEV(card),
1488 QDIO_FLAG_CLEANUP_USING_CLEAR);
1489 if (rc)
1490 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1491 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1492 break;
1493 case QETH_QDIO_CLEANING:
1494 return rc;
1495 default:
1496 break;
1497 }
1498 rc = qeth_clear_halt_card(card, use_halt);
1499 if (rc)
1500 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1501 card->state = CARD_STATE_DOWN;
1502 return rc;
1503}
1504EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1505
1506static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1507{
1508 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1509 struct diag26c_vnic_resp *response = NULL;
1510 struct diag26c_vnic_req *request = NULL;
1511 struct ccw_dev_id id;
1512 char userid[80];
1513 int rc = 0;
1514
1515 QETH_CARD_TEXT(card, 2, "vmlayer");
1516
1517 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1518 if (rc)
1519 goto out;
1520
1521 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1522 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1523 if (!request || !response) {
1524 rc = -ENOMEM;
1525 goto out;
1526 }
1527
1528 ccw_device_get_id(CARD_RDEV(card), &id);
1529 request->resp_buf_len = sizeof(*response);
1530 request->resp_version = DIAG26C_VERSION6_VM65918;
1531 request->req_format = DIAG26C_VNIC_INFO;
1532 ASCEBC(userid, 8);
1533 memcpy(&request->sys_name, userid, 8);
1534 request->devno = id.devno;
1535
1536 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1537 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1538 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1539 if (rc)
1540 goto out;
1541 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1542
1543 if (request->resp_buf_len < sizeof(*response) ||
1544 response->version != request->resp_version) {
1545 rc = -EIO;
1546 goto out;
1547 }
1548
1549 if (response->protocol == VNIC_INFO_PROT_L2)
1550 disc = QETH_DISCIPLINE_LAYER2;
1551 else if (response->protocol == VNIC_INFO_PROT_L3)
1552 disc = QETH_DISCIPLINE_LAYER3;
1553
1554out:
1555 kfree(response);
1556 kfree(request);
1557 if (rc)
1558 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1559 return disc;
1560}
1561
1562
1563static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1564{
1565 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1566
1567 if (IS_OSM(card) || IS_OSN(card))
1568 disc = QETH_DISCIPLINE_LAYER2;
1569 else if (IS_VM_NIC(card))
1570 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1571 qeth_vm_detect_layer(card);
1572
1573 switch (disc) {
1574 case QETH_DISCIPLINE_LAYER2:
1575 QETH_CARD_TEXT(card, 3, "force l2");
1576 break;
1577 case QETH_DISCIPLINE_LAYER3:
1578 QETH_CARD_TEXT(card, 3, "force l3");
1579 break;
1580 default:
1581 QETH_CARD_TEXT(card, 3, "force no");
1582 }
1583
1584 return disc;
1585}
1586
1587static void qeth_set_blkt_defaults(struct qeth_card *card)
1588{
1589 QETH_CARD_TEXT(card, 2, "cfgblkt");
1590
1591 if (card->info.use_v1_blkt) {
1592 card->info.blkt.time_total = 0;
1593 card->info.blkt.inter_packet = 0;
1594 card->info.blkt.inter_packet_jumbo = 0;
1595 } else {
1596 card->info.blkt.time_total = 250;
1597 card->info.blkt.inter_packet = 5;
1598 card->info.blkt.inter_packet_jumbo = 15;
1599 }
1600}
1601
1602static void qeth_init_tokens(struct qeth_card *card)
1603{
1604 card->token.issuer_rm_w = 0x00010103UL;
1605 card->token.cm_filter_w = 0x00010108UL;
1606 card->token.cm_connection_w = 0x0001010aUL;
1607 card->token.ulp_filter_w = 0x0001010bUL;
1608 card->token.ulp_connection_w = 0x0001010dUL;
1609}
1610
1611static void qeth_init_func_level(struct qeth_card *card)
1612{
1613 switch (card->info.type) {
1614 case QETH_CARD_TYPE_IQD:
1615 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1616 break;
1617 case QETH_CARD_TYPE_OSD:
1618 case QETH_CARD_TYPE_OSN:
1619 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1620 break;
1621 default:
1622 break;
1623 }
1624}
1625
1626static void qeth_idx_finalize_cmd(struct qeth_card *card,
1627 struct qeth_cmd_buffer *iob)
1628{
1629 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1630 QETH_SEQ_NO_LENGTH);
1631 if (iob->channel == &card->write)
1632 card->seqno.trans_hdr++;
1633}
1634
1635static int qeth_peer_func_level(int level)
1636{
1637 if ((level & 0xff) == 8)
1638 return (level & 0xff) + 0x400;
1639 if (((level >> 8) & 3) == 1)
1640 return (level & 0xff) + 0x200;
1641 return level;
1642}
1643
1644static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1645 struct qeth_cmd_buffer *iob)
1646{
1647 qeth_idx_finalize_cmd(card, iob);
1648
1649 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1650 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1651 card->seqno.pdu_hdr++;
1652 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1653 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1654
1655 iob->reply->seqno = QETH_IDX_COMMAND_SEQNO;
1656 iob->callback = qeth_release_buffer_cb;
1657}
1658
1659static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1660 void *data,
1661 unsigned int data_length)
1662{
1663 struct qeth_cmd_buffer *iob;
1664
1665 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1666 if (!iob)
1667 return NULL;
1668
1669 memcpy(iob->data, data, data_length);
1670 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1671 iob->data);
1672 iob->finalize = qeth_mpc_finalize_cmd;
1673 return iob;
1674}
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698static int qeth_send_control_data(struct qeth_card *card,
1699 struct qeth_cmd_buffer *iob,
1700 int (*reply_cb)(struct qeth_card *cb_card,
1701 struct qeth_reply *cb_reply,
1702 unsigned long cb_cmd),
1703 void *reply_param)
1704{
1705 struct qeth_channel *channel = iob->channel;
1706 long timeout = iob->timeout;
1707 int rc;
1708 struct qeth_reply *reply = NULL;
1709
1710 QETH_CARD_TEXT(card, 2, "sendctl");
1711
1712 reply = qeth_alloc_reply(card);
1713 if (!reply) {
1714 qeth_put_cmd(iob);
1715 return -ENOMEM;
1716 }
1717 reply->callback = reply_cb;
1718 reply->param = reply_param;
1719
1720
1721 qeth_get_reply(reply);
1722 iob->reply = reply;
1723
1724 timeout = wait_event_interruptible_timeout(card->wait_q,
1725 qeth_trylock_channel(channel),
1726 timeout);
1727 if (timeout <= 0) {
1728 qeth_put_reply(reply);
1729 qeth_put_cmd(iob);
1730 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1731 }
1732
1733 if (iob->finalize)
1734 iob->finalize(card, iob);
1735 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1736
1737 qeth_enqueue_reply(card, reply);
1738
1739 QETH_CARD_TEXT(card, 6, "noirqpnd");
1740 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1741 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1742 (addr_t) iob, 0, 0, timeout);
1743 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1744 if (rc) {
1745 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1746 CARD_DEVID(card), rc);
1747 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1748 qeth_dequeue_reply(card, reply);
1749 qeth_put_reply(reply);
1750 qeth_put_cmd(iob);
1751 atomic_set(&channel->irq_pending, 0);
1752 wake_up(&card->wait_q);
1753 return rc;
1754 }
1755
1756 timeout = wait_for_completion_interruptible_timeout(&reply->received,
1757 timeout);
1758 if (timeout <= 0)
1759 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1760
1761 qeth_dequeue_reply(card, reply);
1762
1763 if (reply_cb) {
1764
1765 spin_lock_irq(&reply->lock);
1766 if (rc)
1767
1768 reply->rc = rc;
1769 spin_unlock_irq(&reply->lock);
1770 }
1771
1772 if (!rc)
1773 rc = reply->rc;
1774 qeth_put_reply(reply);
1775 return rc;
1776}
1777
1778static void qeth_read_conf_data_cb(struct qeth_card *card,
1779 struct qeth_cmd_buffer *iob)
1780{
1781 unsigned char *prcd = iob->data;
1782
1783 QETH_CARD_TEXT(card, 2, "cfgunit");
1784 card->info.chpid = prcd[30];
1785 card->info.unit_addr2 = prcd[31];
1786 card->info.cula = prcd[63];
1787 card->info.is_vm_nic = ((prcd[0x10] == _ascebc['V']) &&
1788 (prcd[0x11] == _ascebc['M']));
1789 card->info.use_v1_blkt = prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1790 prcd[76] >= 0xF1 && prcd[76] <= 0xF4;
1791
1792 qeth_notify_reply(iob->reply, 0);
1793 qeth_put_cmd(iob);
1794}
1795
1796static int qeth_read_conf_data(struct qeth_card *card)
1797{
1798 struct qeth_channel *channel = &card->data;
1799 struct qeth_cmd_buffer *iob;
1800 struct ciw *ciw;
1801
1802
1803 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1804 if (!ciw || ciw->cmd == 0)
1805 return -EOPNOTSUPP;
1806
1807 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1808 if (!iob)
1809 return -ENOMEM;
1810
1811 iob->callback = qeth_read_conf_data_cb;
1812 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1813 iob->data);
1814
1815 return qeth_send_control_data(card, iob, NULL, NULL);
1816}
1817
1818static int qeth_idx_check_activate_response(struct qeth_card *card,
1819 struct qeth_channel *channel,
1820 struct qeth_cmd_buffer *iob)
1821{
1822 int rc;
1823
1824 rc = qeth_check_idx_response(card, iob->data);
1825 if (rc)
1826 return rc;
1827
1828 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1829 return 0;
1830
1831
1832 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1833 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1834
1835 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1836 case QETH_IDX_ACT_ERR_EXCL:
1837 dev_err(&channel->ccwdev->dev,
1838 "The adapter is used exclusively by another host\n");
1839 return -EBUSY;
1840 case QETH_IDX_ACT_ERR_AUTH:
1841 case QETH_IDX_ACT_ERR_AUTH_USER:
1842 dev_err(&channel->ccwdev->dev,
1843 "Setting the device online failed because of insufficient authorization\n");
1844 return -EPERM;
1845 default:
1846 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1847 CCW_DEVID(channel->ccwdev));
1848 return -EIO;
1849 }
1850}
1851
1852static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
1853 struct qeth_cmd_buffer *iob)
1854{
1855 struct qeth_channel *channel = iob->channel;
1856 u16 peer_level;
1857 int rc;
1858
1859 QETH_CARD_TEXT(card, 2, "idxrdcb");
1860
1861 rc = qeth_idx_check_activate_response(card, channel, iob);
1862 if (rc)
1863 goto out;
1864
1865 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1866 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1867 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1868 CCW_DEVID(channel->ccwdev),
1869 card->info.func_level, peer_level);
1870 rc = -EINVAL;
1871 goto out;
1872 }
1873
1874 memcpy(&card->token.issuer_rm_r,
1875 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1876 QETH_MPC_TOKEN_LENGTH);
1877 memcpy(&card->info.mcl_level[0],
1878 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1879
1880out:
1881 qeth_notify_reply(iob->reply, rc);
1882 qeth_put_cmd(iob);
1883}
1884
1885static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
1886 struct qeth_cmd_buffer *iob)
1887{
1888 struct qeth_channel *channel = iob->channel;
1889 u16 peer_level;
1890 int rc;
1891
1892 QETH_CARD_TEXT(card, 2, "idxwrcb");
1893
1894 rc = qeth_idx_check_activate_response(card, channel, iob);
1895 if (rc)
1896 goto out;
1897
1898 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1899 if ((peer_level & ~0x0100) !=
1900 qeth_peer_func_level(card->info.func_level)) {
1901 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1902 CCW_DEVID(channel->ccwdev),
1903 card->info.func_level, peer_level);
1904 rc = -EINVAL;
1905 }
1906
1907out:
1908 qeth_notify_reply(iob->reply, rc);
1909 qeth_put_cmd(iob);
1910}
1911
1912static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1913 struct qeth_cmd_buffer *iob)
1914{
1915 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1916 u8 port = ((u8)card->dev->dev_port) | 0x80;
1917 struct ccw1 *ccw = __ccw_from_cmd(iob);
1918 struct ccw_dev_id dev_id;
1919
1920 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
1921 iob->data);
1922 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
1923 ccw_device_get_id(CARD_DDEV(card), &dev_id);
1924 iob->finalize = qeth_idx_finalize_cmd;
1925
1926 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
1927 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1928 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1929 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1930 &card->info.func_level, 2);
1931 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
1932 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
1933}
1934
1935static int qeth_idx_activate_read_channel(struct qeth_card *card)
1936{
1937 struct qeth_channel *channel = &card->read;
1938 struct qeth_cmd_buffer *iob;
1939 int rc;
1940
1941 QETH_CARD_TEXT(card, 2, "idxread");
1942
1943 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1944 if (!iob)
1945 return -ENOMEM;
1946
1947 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1948 qeth_idx_setup_activate_cmd(card, iob);
1949 iob->callback = qeth_idx_activate_read_channel_cb;
1950
1951 rc = qeth_send_control_data(card, iob, NULL, NULL);
1952 if (rc)
1953 return rc;
1954
1955 channel->state = CH_STATE_UP;
1956 return 0;
1957}
1958
1959static int qeth_idx_activate_write_channel(struct qeth_card *card)
1960{
1961 struct qeth_channel *channel = &card->write;
1962 struct qeth_cmd_buffer *iob;
1963 int rc;
1964
1965 QETH_CARD_TEXT(card, 2, "idxwrite");
1966
1967 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1968 if (!iob)
1969 return -ENOMEM;
1970
1971 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1972 qeth_idx_setup_activate_cmd(card, iob);
1973 iob->callback = qeth_idx_activate_write_channel_cb;
1974
1975 rc = qeth_send_control_data(card, iob, NULL, NULL);
1976 if (rc)
1977 return rc;
1978
1979 channel->state = CH_STATE_UP;
1980 return 0;
1981}
1982
1983static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1984 unsigned long data)
1985{
1986 struct qeth_cmd_buffer *iob;
1987
1988 QETH_CARD_TEXT(card, 2, "cmenblcb");
1989
1990 iob = (struct qeth_cmd_buffer *) data;
1991 memcpy(&card->token.cm_filter_r,
1992 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1993 QETH_MPC_TOKEN_LENGTH);
1994 return 0;
1995}
1996
1997static int qeth_cm_enable(struct qeth_card *card)
1998{
1999 struct qeth_cmd_buffer *iob;
2000
2001 QETH_CARD_TEXT(card, 2, "cmenable");
2002
2003 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2004 if (!iob)
2005 return -ENOMEM;
2006
2007 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2008 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2009 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2010 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2011
2012 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2013}
2014
2015static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2016 unsigned long data)
2017{
2018 struct qeth_cmd_buffer *iob;
2019
2020 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2021
2022 iob = (struct qeth_cmd_buffer *) data;
2023 memcpy(&card->token.cm_connection_r,
2024 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2025 QETH_MPC_TOKEN_LENGTH);
2026 return 0;
2027}
2028
2029static int qeth_cm_setup(struct qeth_card *card)
2030{
2031 struct qeth_cmd_buffer *iob;
2032
2033 QETH_CARD_TEXT(card, 2, "cmsetup");
2034
2035 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2036 if (!iob)
2037 return -ENOMEM;
2038
2039 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2040 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2041 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2042 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2043 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2044 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2045 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2046}
2047
2048static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2049{
2050 struct net_device *dev = card->dev;
2051 unsigned int new_mtu;
2052
2053 if (!max_mtu) {
2054
2055 if (IS_IQD(card))
2056 return -EINVAL;
2057
2058 max_mtu = ETH_MAX_MTU;
2059 }
2060
2061 rtnl_lock();
2062 if (IS_IQD(card)) {
2063
2064 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2065
2066
2067 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2068 if (dev->max_mtu && dev->max_mtu != max_mtu)
2069 qeth_free_qdio_queues(card);
2070 } else {
2071 if (dev->mtu)
2072 new_mtu = dev->mtu;
2073
2074 else if (IS_LAYER2(card))
2075 new_mtu = ETH_DATA_LEN;
2076 else
2077 new_mtu = ETH_DATA_LEN - 8;
2078 }
2079
2080 dev->max_mtu = max_mtu;
2081 dev->mtu = min(new_mtu, max_mtu);
2082 rtnl_unlock();
2083 return 0;
2084}
2085
2086static int qeth_get_mtu_outof_framesize(int framesize)
2087{
2088 switch (framesize) {
2089 case 0x4000:
2090 return 8192;
2091 case 0x6000:
2092 return 16384;
2093 case 0xa000:
2094 return 32768;
2095 case 0xffff:
2096 return 57344;
2097 default:
2098 return 0;
2099 }
2100}
2101
2102static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2103 unsigned long data)
2104{
2105 __u16 mtu, framesize;
2106 __u16 len;
2107 __u8 link_type;
2108 struct qeth_cmd_buffer *iob;
2109
2110 QETH_CARD_TEXT(card, 2, "ulpenacb");
2111
2112 iob = (struct qeth_cmd_buffer *) data;
2113 memcpy(&card->token.ulp_filter_r,
2114 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2115 QETH_MPC_TOKEN_LENGTH);
2116 if (IS_IQD(card)) {
2117 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2118 mtu = qeth_get_mtu_outof_framesize(framesize);
2119 } else {
2120 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2121 }
2122 *(u16 *)reply->param = mtu;
2123
2124 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2125 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2126 memcpy(&link_type,
2127 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2128 card->info.link_type = link_type;
2129 } else
2130 card->info.link_type = 0;
2131 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2132 return 0;
2133}
2134
2135static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2136{
2137 if (IS_OSN(card))
2138 return QETH_PROT_OSN2;
2139 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2140}
2141
2142static int qeth_ulp_enable(struct qeth_card *card)
2143{
2144 u8 prot_type = qeth_mpc_select_prot_type(card);
2145 struct qeth_cmd_buffer *iob;
2146 u16 max_mtu;
2147 int rc;
2148
2149 QETH_CARD_TEXT(card, 2, "ulpenabl");
2150
2151 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2152 if (!iob)
2153 return -ENOMEM;
2154
2155 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2156 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2157 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2158 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2159 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2160 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2161 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2162 if (rc)
2163 return rc;
2164 return qeth_update_max_mtu(card, max_mtu);
2165}
2166
2167static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2168 unsigned long data)
2169{
2170 struct qeth_cmd_buffer *iob;
2171
2172 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2173
2174 iob = (struct qeth_cmd_buffer *) data;
2175 memcpy(&card->token.ulp_connection_r,
2176 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2177 QETH_MPC_TOKEN_LENGTH);
2178 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2179 3)) {
2180 QETH_CARD_TEXT(card, 2, "olmlimit");
2181 dev_err(&card->gdev->dev, "A connection could not be "
2182 "established because of an OLM limit\n");
2183 return -EMLINK;
2184 }
2185 return 0;
2186}
2187
2188static int qeth_ulp_setup(struct qeth_card *card)
2189{
2190 __u16 temp;
2191 struct qeth_cmd_buffer *iob;
2192 struct ccw_dev_id dev_id;
2193
2194 QETH_CARD_TEXT(card, 2, "ulpsetup");
2195
2196 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2197 if (!iob)
2198 return -ENOMEM;
2199
2200 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2201 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2202 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2203 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2204 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2205 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2206
2207 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2208 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2209 temp = (card->info.cula << 8) + card->info.unit_addr2;
2210 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2211 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2212}
2213
2214static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2215{
2216 struct qeth_qdio_out_buffer *newbuf;
2217
2218 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2219 if (!newbuf)
2220 return -ENOMEM;
2221
2222 newbuf->buffer = q->qdio_bufs[bidx];
2223 skb_queue_head_init(&newbuf->skb_list);
2224 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2225 newbuf->q = q;
2226 newbuf->next_pending = q->bufs[bidx];
2227 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2228 q->bufs[bidx] = newbuf;
2229 return 0;
2230}
2231
2232static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2233{
2234 if (!q)
2235 return;
2236
2237 qeth_drain_output_queue(q, true);
2238 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2239 kfree(q);
2240}
2241
2242static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2243{
2244 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2245
2246 if (!q)
2247 return NULL;
2248
2249 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2250 kfree(q);
2251 return NULL;
2252 }
2253 return q;
2254}
2255
2256static int qeth_alloc_qdio_queues(struct qeth_card *card)
2257{
2258 int i, j;
2259
2260 QETH_CARD_TEXT(card, 2, "allcqdbf");
2261
2262 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2263 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2264 return 0;
2265
2266 QETH_CARD_TEXT(card, 2, "inq");
2267 card->qdio.in_q = qeth_alloc_qdio_queue();
2268 if (!card->qdio.in_q)
2269 goto out_nomem;
2270
2271
2272 if (qeth_alloc_buffer_pool(card))
2273 goto out_freeinq;
2274
2275
2276 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2277 card->qdio.out_qs[i] = qeth_alloc_output_queue();
2278 if (!card->qdio.out_qs[i])
2279 goto out_freeoutq;
2280 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2281 QETH_CARD_HEX(card, 2, &card->qdio.out_qs[i], sizeof(void *));
2282 card->qdio.out_qs[i]->card = card;
2283 card->qdio.out_qs[i]->queue_no = i;
2284
2285 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2286 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2287 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2288 goto out_freeoutqbufs;
2289 }
2290 }
2291
2292
2293 if (qeth_alloc_cq(card))
2294 goto out_freeoutq;
2295
2296 return 0;
2297
2298out_freeoutqbufs:
2299 while (j > 0) {
2300 --j;
2301 kmem_cache_free(qeth_qdio_outbuf_cache,
2302 card->qdio.out_qs[i]->bufs[j]);
2303 card->qdio.out_qs[i]->bufs[j] = NULL;
2304 }
2305out_freeoutq:
2306 while (i > 0) {
2307 qeth_free_output_queue(card->qdio.out_qs[--i]);
2308 card->qdio.out_qs[i] = NULL;
2309 }
2310 qeth_free_buffer_pool(card);
2311out_freeinq:
2312 qeth_free_qdio_queue(card->qdio.in_q);
2313 card->qdio.in_q = NULL;
2314out_nomem:
2315 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2316 return -ENOMEM;
2317}
2318
2319static void qeth_free_qdio_queues(struct qeth_card *card)
2320{
2321 int i, j;
2322
2323 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2324 QETH_QDIO_UNINITIALIZED)
2325 return;
2326
2327 qeth_free_cq(card);
2328 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2329 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2330 if (card->qdio.in_q->bufs[j].rx_skb)
2331 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2332 }
2333 qeth_free_qdio_queue(card->qdio.in_q);
2334 card->qdio.in_q = NULL;
2335
2336 qeth_free_buffer_pool(card);
2337
2338 for (i = 0; i < card->qdio.no_out_queues; i++) {
2339 qeth_free_output_queue(card->qdio.out_qs[i]);
2340 card->qdio.out_qs[i] = NULL;
2341 }
2342}
2343
2344static void qeth_create_qib_param_field(struct qeth_card *card,
2345 char *param_field)
2346{
2347
2348 param_field[0] = _ascebc['P'];
2349 param_field[1] = _ascebc['C'];
2350 param_field[2] = _ascebc['I'];
2351 param_field[3] = _ascebc['T'];
2352 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2353 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2354 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2355}
2356
2357static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2358 char *param_field)
2359{
2360 param_field[16] = _ascebc['B'];
2361 param_field[17] = _ascebc['L'];
2362 param_field[18] = _ascebc['K'];
2363 param_field[19] = _ascebc['T'];
2364 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2365 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2366 *((unsigned int *) (¶m_field[28])) =
2367 card->info.blkt.inter_packet_jumbo;
2368}
2369
2370static int qeth_qdio_activate(struct qeth_card *card)
2371{
2372 QETH_CARD_TEXT(card, 3, "qdioact");
2373 return qdio_activate(CARD_DDEV(card));
2374}
2375
2376static int qeth_dm_act(struct qeth_card *card)
2377{
2378 struct qeth_cmd_buffer *iob;
2379
2380 QETH_CARD_TEXT(card, 2, "dmact");
2381
2382 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2383 if (!iob)
2384 return -ENOMEM;
2385
2386 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2387 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2388 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2389 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2390 return qeth_send_control_data(card, iob, NULL, NULL);
2391}
2392
2393static int qeth_mpc_initialize(struct qeth_card *card)
2394{
2395 int rc;
2396
2397 QETH_CARD_TEXT(card, 2, "mpcinit");
2398
2399 rc = qeth_issue_next_read(card);
2400 if (rc) {
2401 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2402 return rc;
2403 }
2404 rc = qeth_cm_enable(card);
2405 if (rc) {
2406 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2407 goto out_qdio;
2408 }
2409 rc = qeth_cm_setup(card);
2410 if (rc) {
2411 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2412 goto out_qdio;
2413 }
2414 rc = qeth_ulp_enable(card);
2415 if (rc) {
2416 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2417 goto out_qdio;
2418 }
2419 rc = qeth_ulp_setup(card);
2420 if (rc) {
2421 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2422 goto out_qdio;
2423 }
2424 rc = qeth_alloc_qdio_queues(card);
2425 if (rc) {
2426 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2427 goto out_qdio;
2428 }
2429 rc = qeth_qdio_establish(card);
2430 if (rc) {
2431 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2432 qeth_free_qdio_queues(card);
2433 goto out_qdio;
2434 }
2435 rc = qeth_qdio_activate(card);
2436 if (rc) {
2437 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2438 goto out_qdio;
2439 }
2440 rc = qeth_dm_act(card);
2441 if (rc) {
2442 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2443 goto out_qdio;
2444 }
2445
2446 return 0;
2447out_qdio:
2448 qeth_qdio_clear_card(card, !IS_IQD(card));
2449 qdio_free(CARD_DDEV(card));
2450 return rc;
2451}
2452
2453void qeth_print_status_message(struct qeth_card *card)
2454{
2455 switch (card->info.type) {
2456 case QETH_CARD_TYPE_OSD:
2457 case QETH_CARD_TYPE_OSM:
2458 case QETH_CARD_TYPE_OSX:
2459
2460
2461
2462
2463 if (!card->info.mcl_level[0]) {
2464 sprintf(card->info.mcl_level, "%02x%02x",
2465 card->info.mcl_level[2],
2466 card->info.mcl_level[3]);
2467 break;
2468 }
2469
2470 case QETH_CARD_TYPE_IQD:
2471 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2472 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2473 card->info.mcl_level[0]];
2474 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2475 card->info.mcl_level[1]];
2476 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2477 card->info.mcl_level[2]];
2478 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2479 card->info.mcl_level[3]];
2480 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2481 }
2482 break;
2483 default:
2484 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2485 }
2486 dev_info(&card->gdev->dev,
2487 "Device is a%s card%s%s%s\nwith link type %s.\n",
2488 qeth_get_cardname(card),
2489 (card->info.mcl_level[0]) ? " (level: " : "",
2490 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2491 (card->info.mcl_level[0]) ? ")" : "",
2492 qeth_get_cardname_short(card));
2493}
2494EXPORT_SYMBOL_GPL(qeth_print_status_message);
2495
2496static void qeth_initialize_working_pool_list(struct qeth_card *card)
2497{
2498 struct qeth_buffer_pool_entry *entry;
2499
2500 QETH_CARD_TEXT(card, 5, "inwrklst");
2501
2502 list_for_each_entry(entry,
2503 &card->qdio.init_pool.entry_list, init_list) {
2504 qeth_put_buffer_pool_entry(card, entry);
2505 }
2506}
2507
2508static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2509 struct qeth_card *card)
2510{
2511 struct list_head *plh;
2512 struct qeth_buffer_pool_entry *entry;
2513 int i, free;
2514 struct page *page;
2515
2516 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2517 return NULL;
2518
2519 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2520 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2521 free = 1;
2522 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2523 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2524 free = 0;
2525 break;
2526 }
2527 }
2528 if (free) {
2529 list_del_init(&entry->list);
2530 return entry;
2531 }
2532 }
2533
2534
2535 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2536 struct qeth_buffer_pool_entry, list);
2537 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2538 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2539 page = alloc_page(GFP_ATOMIC);
2540 if (!page) {
2541 return NULL;
2542 } else {
2543 free_page((unsigned long)entry->elements[i]);
2544 entry->elements[i] = page_address(page);
2545 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2546 }
2547 }
2548 }
2549 list_del_init(&entry->list);
2550 return entry;
2551}
2552
2553static int qeth_init_input_buffer(struct qeth_card *card,
2554 struct qeth_qdio_buffer *buf)
2555{
2556 struct qeth_buffer_pool_entry *pool_entry;
2557 int i;
2558
2559 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2560 buf->rx_skb = netdev_alloc_skb(card->dev,
2561 QETH_RX_PULL_LEN + ETH_HLEN);
2562 if (!buf->rx_skb)
2563 return 1;
2564 }
2565
2566 pool_entry = qeth_find_free_buffer_pool_entry(card);
2567 if (!pool_entry)
2568 return 1;
2569
2570
2571
2572
2573
2574
2575
2576
2577 buf->pool_entry = pool_entry;
2578 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2579 buf->buffer->element[i].length = PAGE_SIZE;
2580 buf->buffer->element[i].addr = pool_entry->elements[i];
2581 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2582 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2583 else
2584 buf->buffer->element[i].eflags = 0;
2585 buf->buffer->element[i].sflags = 0;
2586 }
2587 return 0;
2588}
2589
2590int qeth_init_qdio_queues(struct qeth_card *card)
2591{
2592 unsigned int i;
2593 int rc;
2594
2595 QETH_CARD_TEXT(card, 2, "initqdqs");
2596
2597
2598 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2599 memset(&card->rx, 0, sizeof(struct qeth_rx));
2600 qeth_initialize_working_pool_list(card);
2601
2602 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2603 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2604 card->qdio.in_q->next_buf_to_init =
2605 card->qdio.in_buf_pool.buf_count - 1;
2606 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2607 card->qdio.in_buf_pool.buf_count - 1);
2608 if (rc) {
2609 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2610 return rc;
2611 }
2612
2613
2614 rc = qeth_cq_init(card);
2615 if (rc) {
2616 return rc;
2617 }
2618
2619
2620 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2621 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2622
2623 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2624 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2625 queue->next_buf_to_fill = 0;
2626 queue->do_pack = 0;
2627 atomic_set(&queue->used_buffers, 0);
2628 atomic_set(&queue->set_pci_flags_count, 0);
2629 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2630 }
2631 return 0;
2632}
2633EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2634
2635static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2636 struct qeth_cmd_buffer *iob)
2637{
2638 qeth_mpc_finalize_cmd(card, iob);
2639
2640
2641 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa;
2642 iob->reply->seqno = card->seqno.ipa++;
2643}
2644
2645void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2646 u16 cmd_length)
2647{
2648 u8 prot_type = qeth_mpc_select_prot_type(card);
2649 u16 total_length = iob->length;
2650
2651 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2652 iob->data);
2653 iob->finalize = qeth_ipa_finalize_cmd;
2654
2655 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2656 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2657 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2658 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2659 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2660 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2661 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2662 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2663}
2664EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2665
2666struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2667 enum qeth_ipa_cmds cmd_code,
2668 enum qeth_prot_versions prot,
2669 unsigned int data_length)
2670{
2671 enum qeth_link_types link_type = card->info.link_type;
2672 struct qeth_cmd_buffer *iob;
2673 struct qeth_ipacmd_hdr *hdr;
2674
2675 data_length += offsetof(struct qeth_ipa_cmd, data);
2676 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2677 QETH_IPA_TIMEOUT);
2678 if (!iob)
2679 return NULL;
2680
2681 qeth_prepare_ipa_cmd(card, iob, data_length);
2682
2683 hdr = &__ipa_cmd(iob)->hdr;
2684 hdr->command = cmd_code;
2685 hdr->initiator = IPA_CMD_INITIATOR_HOST;
2686
2687 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2688 hdr->rel_adapter_no = (u8) card->dev->dev_port;
2689 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2690 hdr->param_count = 1;
2691 hdr->prot_version = prot;
2692 return iob;
2693}
2694EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2695
2696static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2697 struct qeth_reply *reply, unsigned long data)
2698{
2699 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2700
2701 return (cmd->hdr.return_code) ? -EIO : 0;
2702}
2703
2704
2705
2706
2707
2708
2709
2710int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2711 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2712 unsigned long),
2713 void *reply_param)
2714{
2715 int rc;
2716
2717 QETH_CARD_TEXT(card, 4, "sendipa");
2718
2719 if (card->read_or_write_problem) {
2720 qeth_put_cmd(iob);
2721 return -EIO;
2722 }
2723
2724 if (reply_cb == NULL)
2725 reply_cb = qeth_send_ipa_cmd_cb;
2726 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
2727 if (rc == -ETIME) {
2728 qeth_clear_ipacmd_list(card);
2729 qeth_schedule_recovery(card);
2730 }
2731 return rc;
2732}
2733EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2734
2735static int qeth_send_startlan_cb(struct qeth_card *card,
2736 struct qeth_reply *reply, unsigned long data)
2737{
2738 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2739
2740 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2741 return -ENETDOWN;
2742
2743 return (cmd->hdr.return_code) ? -EIO : 0;
2744}
2745
2746static int qeth_send_startlan(struct qeth_card *card)
2747{
2748 struct qeth_cmd_buffer *iob;
2749
2750 QETH_CARD_TEXT(card, 2, "strtlan");
2751
2752 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
2753 if (!iob)
2754 return -ENOMEM;
2755 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
2756}
2757
2758static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2759{
2760 if (!cmd->hdr.return_code)
2761 cmd->hdr.return_code =
2762 cmd->data.setadapterparms.hdr.return_code;
2763 return cmd->hdr.return_code;
2764}
2765
2766static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2767 struct qeth_reply *reply, unsigned long data)
2768{
2769 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2770
2771 QETH_CARD_TEXT(card, 3, "quyadpcb");
2772 if (qeth_setadpparms_inspect_rc(cmd))
2773 return -EIO;
2774
2775 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2776 card->info.link_type =
2777 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2778 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
2779 }
2780 card->options.adp.supported_funcs =
2781 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2782 return 0;
2783}
2784
2785static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2786 enum qeth_ipa_setadp_cmd adp_cmd,
2787 unsigned int data_length)
2788{
2789 struct qeth_ipacmd_setadpparms_hdr *hdr;
2790 struct qeth_cmd_buffer *iob;
2791
2792 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2793 data_length +
2794 offsetof(struct qeth_ipacmd_setadpparms,
2795 data));
2796 if (!iob)
2797 return NULL;
2798
2799 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2800 hdr->cmdlength = sizeof(*hdr) + data_length;
2801 hdr->command_code = adp_cmd;
2802 hdr->used_total = 1;
2803 hdr->seq_no = 1;
2804 return iob;
2805}
2806
2807static int qeth_query_setadapterparms(struct qeth_card *card)
2808{
2809 int rc;
2810 struct qeth_cmd_buffer *iob;
2811
2812 QETH_CARD_TEXT(card, 3, "queryadp");
2813 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2814 SETADP_DATA_SIZEOF(query_cmds_supp));
2815 if (!iob)
2816 return -ENOMEM;
2817 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2818 return rc;
2819}
2820
2821static int qeth_query_ipassists_cb(struct qeth_card *card,
2822 struct qeth_reply *reply, unsigned long data)
2823{
2824 struct qeth_ipa_cmd *cmd;
2825
2826 QETH_CARD_TEXT(card, 2, "qipasscb");
2827
2828 cmd = (struct qeth_ipa_cmd *) data;
2829
2830 switch (cmd->hdr.return_code) {
2831 case IPA_RC_SUCCESS:
2832 break;
2833 case IPA_RC_NOTSUPP:
2834 case IPA_RC_L2_UNSUPPORTED_CMD:
2835 QETH_CARD_TEXT(card, 2, "ipaunsup");
2836 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2837 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2838 return -EOPNOTSUPP;
2839 default:
2840 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2841 CARD_DEVID(card), cmd->hdr.return_code);
2842 return -EIO;
2843 }
2844
2845 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2846 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2847 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2848 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2849 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2850 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2851 } else
2852 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2853 CARD_DEVID(card));
2854 return 0;
2855}
2856
2857static int qeth_query_ipassists(struct qeth_card *card,
2858 enum qeth_prot_versions prot)
2859{
2860 int rc;
2861 struct qeth_cmd_buffer *iob;
2862
2863 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
2864 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
2865 if (!iob)
2866 return -ENOMEM;
2867 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2868 return rc;
2869}
2870
2871static int qeth_query_switch_attributes_cb(struct qeth_card *card,
2872 struct qeth_reply *reply, unsigned long data)
2873{
2874 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2875 struct qeth_query_switch_attributes *attrs;
2876 struct qeth_switch_info *sw_info;
2877
2878 QETH_CARD_TEXT(card, 2, "qswiatcb");
2879 if (qeth_setadpparms_inspect_rc(cmd))
2880 return -EIO;
2881
2882 sw_info = (struct qeth_switch_info *)reply->param;
2883 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
2884 sw_info->capabilities = attrs->capabilities;
2885 sw_info->settings = attrs->settings;
2886 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
2887 sw_info->settings);
2888 return 0;
2889}
2890
2891int qeth_query_switch_attributes(struct qeth_card *card,
2892 struct qeth_switch_info *sw_info)
2893{
2894 struct qeth_cmd_buffer *iob;
2895
2896 QETH_CARD_TEXT(card, 2, "qswiattr");
2897 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
2898 return -EOPNOTSUPP;
2899 if (!netif_carrier_ok(card->dev))
2900 return -ENOMEDIUM;
2901 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
2902 if (!iob)
2903 return -ENOMEM;
2904 return qeth_send_ipa_cmd(card, iob,
2905 qeth_query_switch_attributes_cb, sw_info);
2906}
2907
2908struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
2909 enum qeth_diags_cmds sub_cmd,
2910 unsigned int data_length)
2911{
2912 struct qeth_ipacmd_diagass *cmd;
2913 struct qeth_cmd_buffer *iob;
2914
2915 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
2916 DIAG_HDR_LEN + data_length);
2917 if (!iob)
2918 return NULL;
2919
2920 cmd = &__ipa_cmd(iob)->data.diagass;
2921 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
2922 cmd->subcmd = sub_cmd;
2923 return iob;
2924}
2925EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
2926
2927static int qeth_query_setdiagass_cb(struct qeth_card *card,
2928 struct qeth_reply *reply, unsigned long data)
2929{
2930 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2931 u16 rc = cmd->hdr.return_code;
2932
2933 if (rc) {
2934 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2935 return -EIO;
2936 }
2937
2938 card->info.diagass_support = cmd->data.diagass.ext;
2939 return 0;
2940}
2941
2942static int qeth_query_setdiagass(struct qeth_card *card)
2943{
2944 struct qeth_cmd_buffer *iob;
2945
2946 QETH_CARD_TEXT(card, 2, "qdiagass");
2947 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
2948 if (!iob)
2949 return -ENOMEM;
2950 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2951}
2952
2953static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2954{
2955 unsigned long info = get_zeroed_page(GFP_KERNEL);
2956 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2957 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2958 struct ccw_dev_id ccwid;
2959 int level;
2960
2961 tid->chpid = card->info.chpid;
2962 ccw_device_get_id(CARD_RDEV(card), &ccwid);
2963 tid->ssid = ccwid.ssid;
2964 tid->devno = ccwid.devno;
2965 if (!info)
2966 return;
2967 level = stsi(NULL, 0, 0, 0);
2968 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
2969 tid->lparnr = info222->lpar_number;
2970 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
2971 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2972 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2973 }
2974 free_page(info);
2975 return;
2976}
2977
2978static int qeth_hw_trap_cb(struct qeth_card *card,
2979 struct qeth_reply *reply, unsigned long data)
2980{
2981 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2982 u16 rc = cmd->hdr.return_code;
2983
2984 if (rc) {
2985 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2986 return -EIO;
2987 }
2988 return 0;
2989}
2990
2991int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2992{
2993 struct qeth_cmd_buffer *iob;
2994 struct qeth_ipa_cmd *cmd;
2995
2996 QETH_CARD_TEXT(card, 2, "diagtrap");
2997 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
2998 if (!iob)
2999 return -ENOMEM;
3000 cmd = __ipa_cmd(iob);
3001 cmd->data.diagass.type = 1;
3002 cmd->data.diagass.action = action;
3003 switch (action) {
3004 case QETH_DIAGS_TRAP_ARM:
3005 cmd->data.diagass.options = 0x0003;
3006 cmd->data.diagass.ext = 0x00010000 +
3007 sizeof(struct qeth_trap_id);
3008 qeth_get_trap_id(card,
3009 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3010 break;
3011 case QETH_DIAGS_TRAP_DISARM:
3012 cmd->data.diagass.options = 0x0001;
3013 break;
3014 case QETH_DIAGS_TRAP_CAPTURE:
3015 break;
3016 }
3017 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3018}
3019EXPORT_SYMBOL_GPL(qeth_hw_trap);
3020
3021static int qeth_check_qdio_errors(struct qeth_card *card,
3022 struct qdio_buffer *buf,
3023 unsigned int qdio_error,
3024 const char *dbftext)
3025{
3026 if (qdio_error) {
3027 QETH_CARD_TEXT(card, 2, dbftext);
3028 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3029 buf->element[15].sflags);
3030 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3031 buf->element[14].sflags);
3032 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3033 if ((buf->element[15].sflags) == 0x12) {
3034 QETH_CARD_STAT_INC(card, rx_dropped);
3035 return 0;
3036 } else
3037 return 1;
3038 }
3039 return 0;
3040}
3041
3042static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3043{
3044 struct qeth_qdio_q *queue = card->qdio.in_q;
3045 struct list_head *lh;
3046 int count;
3047 int i;
3048 int rc;
3049 int newcount = 0;
3050
3051 count = (index < queue->next_buf_to_init)?
3052 card->qdio.in_buf_pool.buf_count -
3053 (queue->next_buf_to_init - index) :
3054 card->qdio.in_buf_pool.buf_count -
3055 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3056
3057 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3058 for (i = queue->next_buf_to_init;
3059 i < queue->next_buf_to_init + count; ++i) {
3060 if (qeth_init_input_buffer(card,
3061 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3062 break;
3063 } else {
3064 newcount++;
3065 }
3066 }
3067
3068 if (newcount < count) {
3069
3070
3071 atomic_set(&card->force_alloc_skb, 3);
3072 count = newcount;
3073 } else {
3074 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3075 }
3076
3077 if (!count) {
3078 i = 0;
3079 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3080 i++;
3081 if (i == card->qdio.in_buf_pool.buf_count) {
3082 QETH_CARD_TEXT(card, 2, "qsarbw");
3083 card->reclaim_index = index;
3084 schedule_delayed_work(
3085 &card->buffer_reclaim_work,
3086 QETH_RECLAIM_WORK_TIME);
3087 }
3088 return;
3089 }
3090
3091
3092
3093
3094
3095
3096
3097
3098 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3099 queue->next_buf_to_init, count);
3100 if (rc) {
3101 QETH_CARD_TEXT(card, 2, "qinberr");
3102 }
3103 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3104 QDIO_MAX_BUFFERS_PER_Q;
3105 }
3106}
3107
3108static void qeth_buffer_reclaim_work(struct work_struct *work)
3109{
3110 struct qeth_card *card = container_of(work, struct qeth_card,
3111 buffer_reclaim_work.work);
3112
3113 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3114 qeth_queue_input_buffer(card, card->reclaim_index);
3115}
3116
3117static void qeth_handle_send_error(struct qeth_card *card,
3118 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3119{
3120 int sbalf15 = buffer->buffer->element[15].sflags;
3121
3122 QETH_CARD_TEXT(card, 6, "hdsnderr");
3123 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3124
3125 if (!qdio_err)
3126 return;
3127
3128 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3129 return;
3130
3131 QETH_CARD_TEXT(card, 1, "lnkfail");
3132 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3133 (u16)qdio_err, (u8)sbalf15);
3134}
3135
3136
3137
3138
3139
3140
3141
3142static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3143{
3144 struct qeth_qdio_out_buffer *buffer;
3145
3146 buffer = queue->bufs[queue->next_buf_to_fill];
3147 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3148 (buffer->next_element_to_fill > 0)) {
3149
3150 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3151 queue->next_buf_to_fill =
3152 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3153 return 1;
3154 }
3155 return 0;
3156}
3157
3158
3159
3160
3161
3162static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3163{
3164 if (!queue->do_pack) {
3165 if (atomic_read(&queue->used_buffers)
3166 >= QETH_HIGH_WATERMARK_PACK){
3167
3168 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3169 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3170 queue->do_pack = 1;
3171 }
3172 }
3173}
3174
3175
3176
3177
3178
3179
3180
3181static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3182{
3183 if (queue->do_pack) {
3184 if (atomic_read(&queue->used_buffers)
3185 <= QETH_LOW_WATERMARK_PACK) {
3186
3187 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3188 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3189 queue->do_pack = 0;
3190 return qeth_prep_flush_pack_buffer(queue);
3191 }
3192 }
3193 return 0;
3194}
3195
3196static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3197 int count)
3198{
3199 struct qeth_qdio_out_buffer *buf;
3200 int rc;
3201 int i;
3202 unsigned int qdio_flags;
3203
3204 for (i = index; i < index + count; ++i) {
3205 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3206 buf = queue->bufs[bidx];
3207 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3208 SBAL_EFLAGS_LAST_ENTRY;
3209
3210 if (queue->bufstates)
3211 queue->bufstates[bidx].user = buf;
3212
3213 if (IS_IQD(queue->card))
3214 continue;
3215
3216 if (!queue->do_pack) {
3217 if ((atomic_read(&queue->used_buffers) >=
3218 (QETH_HIGH_WATERMARK_PACK -
3219 QETH_WATERMARK_PACK_FUZZ)) &&
3220 !atomic_read(&queue->set_pci_flags_count)) {
3221
3222
3223 atomic_inc(&queue->set_pci_flags_count);
3224 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3225 }
3226 } else {
3227 if (!atomic_read(&queue->set_pci_flags_count)) {
3228
3229
3230
3231
3232
3233
3234
3235
3236 atomic_inc(&queue->set_pci_flags_count);
3237 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3238 }
3239 }
3240 }
3241
3242 QETH_TXQ_STAT_ADD(queue, bufs, count);
3243 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3244 if (atomic_read(&queue->set_pci_flags_count))
3245 qdio_flags |= QDIO_FLAG_PCI_OUT;
3246 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3247 queue->queue_no, index, count);
3248 if (rc) {
3249 QETH_TXQ_STAT_ADD(queue, tx_errors, count);
3250
3251 if (rc == -ENOBUFS)
3252 return;
3253 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3254 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3255 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3256 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3257 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3258
3259
3260
3261 qeth_schedule_recovery(queue->card);
3262 return;
3263 }
3264}
3265
3266static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3267{
3268 int index;
3269 int flush_cnt = 0;
3270 int q_was_packing = 0;
3271
3272
3273
3274
3275
3276 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3277 !atomic_read(&queue->set_pci_flags_count)) {
3278 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3279 QETH_OUT_Q_UNLOCKED) {
3280
3281
3282
3283
3284
3285 index = queue->next_buf_to_fill;
3286 q_was_packing = queue->do_pack;
3287
3288 barrier();
3289 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3290 if (!flush_cnt &&
3291 !atomic_read(&queue->set_pci_flags_count))
3292 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3293 if (q_was_packing)
3294 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3295 if (flush_cnt)
3296 qeth_flush_buffers(queue, index, flush_cnt);
3297 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3298 }
3299 }
3300}
3301
3302static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3303 unsigned long card_ptr)
3304{
3305 struct qeth_card *card = (struct qeth_card *)card_ptr;
3306
3307 if (card->dev->flags & IFF_UP)
3308 napi_schedule(&card->napi);
3309}
3310
3311int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3312{
3313 int rc;
3314
3315 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3316 rc = -1;
3317 goto out;
3318 } else {
3319 if (card->options.cq == cq) {
3320 rc = 0;
3321 goto out;
3322 }
3323
3324 if (card->state != CARD_STATE_DOWN) {
3325 rc = -1;
3326 goto out;
3327 }
3328
3329 qeth_free_qdio_queues(card);
3330 card->options.cq = cq;
3331 rc = 0;
3332 }
3333out:
3334 return rc;
3335
3336}
3337EXPORT_SYMBOL_GPL(qeth_configure_cq);
3338
3339static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3340 unsigned int queue, int first_element,
3341 int count)
3342{
3343 struct qeth_qdio_q *cq = card->qdio.c_q;
3344 int i;
3345 int rc;
3346
3347 if (!qeth_is_cq(card, queue))
3348 return;
3349
3350 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3351 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3352 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3353
3354 if (qdio_err) {
3355 netif_tx_stop_all_queues(card->dev);
3356 qeth_schedule_recovery(card);
3357 return;
3358 }
3359
3360 for (i = first_element; i < first_element + count; ++i) {
3361 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3362 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3363 int e = 0;
3364
3365 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3366 buffer->element[e].addr) {
3367 unsigned long phys_aob_addr;
3368
3369 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3370 qeth_qdio_handle_aob(card, phys_aob_addr);
3371 ++e;
3372 }
3373 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3374 }
3375 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3376 card->qdio.c_q->next_buf_to_init,
3377 count);
3378 if (rc) {
3379 dev_warn(&card->gdev->dev,
3380 "QDIO reported an error, rc=%i\n", rc);
3381 QETH_CARD_TEXT(card, 2, "qcqherr");
3382 }
3383 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3384 + count) % QDIO_MAX_BUFFERS_PER_Q;
3385}
3386
3387static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3388 unsigned int qdio_err, int queue,
3389 int first_elem, int count,
3390 unsigned long card_ptr)
3391{
3392 struct qeth_card *card = (struct qeth_card *)card_ptr;
3393
3394 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3395 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3396
3397 if (qeth_is_cq(card, queue))
3398 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3399 else if (qdio_err)
3400 qeth_schedule_recovery(card);
3401}
3402
3403static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3404 unsigned int qdio_error, int __queue,
3405 int first_element, int count,
3406 unsigned long card_ptr)
3407{
3408 struct qeth_card *card = (struct qeth_card *) card_ptr;
3409 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3410 struct qeth_qdio_out_buffer *buffer;
3411 struct net_device *dev = card->dev;
3412 struct netdev_queue *txq;
3413 int i;
3414
3415 QETH_CARD_TEXT(card, 6, "qdouhdl");
3416 if (qdio_error & QDIO_ERROR_FATAL) {
3417 QETH_CARD_TEXT(card, 2, "achkcond");
3418 netif_tx_stop_all_queues(dev);
3419 qeth_schedule_recovery(card);
3420 return;
3421 }
3422
3423 for (i = first_element; i < (first_element + count); ++i) {
3424 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3425 buffer = queue->bufs[bidx];
3426 qeth_handle_send_error(card, buffer, qdio_error);
3427
3428 if (queue->bufstates &&
3429 (queue->bufstates[bidx].flags &
3430 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3431 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3432
3433 if (atomic_cmpxchg(&buffer->state,
3434 QETH_QDIO_BUF_PRIMED,
3435 QETH_QDIO_BUF_PENDING) ==
3436 QETH_QDIO_BUF_PRIMED) {
3437 qeth_notify_skbs(queue, buffer,
3438 TX_NOTIFY_PENDING);
3439 }
3440 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3441
3442
3443 qeth_scrub_qdio_buffer(buffer->buffer,
3444 queue->max_elements);
3445 if (qeth_init_qdio_out_buf(queue, bidx)) {
3446 QETH_CARD_TEXT(card, 2, "outofbuf");
3447 qeth_schedule_recovery(card);
3448 }
3449 } else {
3450 if (card->options.cq == QETH_CQ_ENABLED) {
3451 enum iucv_tx_notify n;
3452
3453 n = qeth_compute_cq_notification(
3454 buffer->buffer->element[15].sflags, 0);
3455 qeth_notify_skbs(queue, buffer, n);
3456 }
3457
3458 qeth_clear_output_buffer(queue, buffer);
3459 }
3460 qeth_cleanup_handled_pending(queue, bidx, 0);
3461 }
3462 atomic_sub(count, &queue->used_buffers);
3463
3464 if (!IS_IQD(card))
3465 qeth_check_outbound_queue(queue);
3466
3467 if (IS_IQD(card))
3468 __queue = qeth_iqd_translate_txq(dev, __queue);
3469 txq = netdev_get_tx_queue(dev, __queue);
3470
3471
3472
3473
3474 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3475 netif_tx_wake_queue(txq);
3476}
3477
3478
3479
3480
3481int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3482{
3483 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3484 u8 tos;
3485
3486 switch (card->qdio.do_prio_queueing) {
3487 case QETH_PRIO_Q_ING_TOS:
3488 case QETH_PRIO_Q_ING_PREC:
3489 switch (qeth_get_ip_version(skb)) {
3490 case 4:
3491 tos = ipv4_get_dsfield(ip_hdr(skb));
3492 break;
3493 case 6:
3494 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3495 break;
3496 default:
3497 return card->qdio.default_out_queue;
3498 }
3499 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3500 return ~tos >> 6 & 3;
3501 if (tos & IPTOS_MINCOST)
3502 return 3;
3503 if (tos & IPTOS_RELIABILITY)
3504 return 2;
3505 if (tos & IPTOS_THROUGHPUT)
3506 return 1;
3507 if (tos & IPTOS_LOWDELAY)
3508 return 0;
3509 break;
3510 case QETH_PRIO_Q_ING_SKB:
3511 if (skb->priority > 5)
3512 return 0;
3513 return ~skb->priority >> 1 & 3;
3514 case QETH_PRIO_Q_ING_VLAN:
3515 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3516 return ~ntohs(veth->h_vlan_TCI) >>
3517 (VLAN_PRIO_SHIFT + 1) & 3;
3518 break;
3519 default:
3520 break;
3521 }
3522 return card->qdio.default_out_queue;
3523}
3524EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3525
3526
3527
3528
3529
3530
3531
3532
3533static int qeth_get_elements_for_frags(struct sk_buff *skb)
3534{
3535 int cnt, elements = 0;
3536
3537 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3538 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3539
3540 elements += qeth_get_elements_for_range(
3541 (addr_t)skb_frag_address(frag),
3542 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3543 }
3544 return elements;
3545}
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3557{
3558 unsigned int elements = qeth_get_elements_for_frags(skb);
3559 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3560 addr_t start = (addr_t)skb->data + data_offset;
3561
3562 if (start != end)
3563 elements += qeth_get_elements_for_range(start, end);
3564 return elements;
3565}
3566EXPORT_SYMBOL_GPL(qeth_count_elements);
3567
3568#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3569 MAX_TCP_HEADER)
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3587 struct sk_buff *skb, struct qeth_hdr **hdr,
3588 unsigned int hdr_len, unsigned int proto_len,
3589 unsigned int *elements)
3590{
3591 const unsigned int contiguous = proto_len ? proto_len : 1;
3592 const unsigned int max_elements = queue->max_elements;
3593 unsigned int __elements;
3594 addr_t start, end;
3595 bool push_ok;
3596 int rc;
3597
3598check_layout:
3599 start = (addr_t)skb->data - hdr_len;
3600 end = (addr_t)skb->data;
3601
3602 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3603
3604 push_ok = true;
3605
3606 if (skb_is_gso(skb))
3607 __elements = 1 + qeth_count_elements(skb, proto_len);
3608 else
3609 __elements = qeth_count_elements(skb, 0);
3610 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3611
3612 push_ok = true;
3613 __elements = 1 + qeth_count_elements(skb, 0);
3614 } else {
3615
3616 push_ok = false;
3617 __elements = 1 + qeth_count_elements(skb, proto_len);
3618 }
3619
3620
3621 if (__elements > max_elements) {
3622 if (!skb_is_nonlinear(skb)) {
3623
3624 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3625 max_elements, __elements, skb->len);
3626 return -E2BIG;
3627 }
3628
3629 rc = skb_linearize(skb);
3630 if (rc) {
3631 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3632 return rc;
3633 }
3634
3635 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3636
3637 goto check_layout;
3638 }
3639
3640 *elements = __elements;
3641
3642 if (push_ok) {
3643 *hdr = skb_push(skb, hdr_len);
3644 return hdr_len;
3645 }
3646
3647 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3648 return -E2BIG;
3649 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3650 if (!*hdr)
3651 return -ENOMEM;
3652
3653 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3654 return 0;
3655}
3656
3657static void __qeth_fill_buffer(struct sk_buff *skb,
3658 struct qeth_qdio_out_buffer *buf,
3659 bool is_first_elem, unsigned int offset)
3660{
3661 struct qdio_buffer *buffer = buf->buffer;
3662 int element = buf->next_element_to_fill;
3663 int length = skb_headlen(skb) - offset;
3664 char *data = skb->data + offset;
3665 unsigned int elem_length, cnt;
3666
3667
3668 while (length > 0) {
3669 elem_length = min_t(unsigned int, length,
3670 PAGE_SIZE - offset_in_page(data));
3671
3672 buffer->element[element].addr = data;
3673 buffer->element[element].length = elem_length;
3674 length -= elem_length;
3675 if (is_first_elem) {
3676 is_first_elem = false;
3677 if (length || skb_is_nonlinear(skb))
3678
3679 buffer->element[element].eflags =
3680 SBAL_EFLAGS_FIRST_FRAG;
3681 else
3682 buffer->element[element].eflags = 0;
3683 } else {
3684 buffer->element[element].eflags =
3685 SBAL_EFLAGS_MIDDLE_FRAG;
3686 }
3687
3688 data += elem_length;
3689 element++;
3690 }
3691
3692
3693 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3694 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3695
3696 data = skb_frag_address(frag);
3697 length = skb_frag_size(frag);
3698 while (length > 0) {
3699 elem_length = min_t(unsigned int, length,
3700 PAGE_SIZE - offset_in_page(data));
3701
3702 buffer->element[element].addr = data;
3703 buffer->element[element].length = elem_length;
3704 buffer->element[element].eflags =
3705 SBAL_EFLAGS_MIDDLE_FRAG;
3706
3707 length -= elem_length;
3708 data += elem_length;
3709 element++;
3710 }
3711 }
3712
3713 if (buffer->element[element - 1].eflags)
3714 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3715 buf->next_element_to_fill = element;
3716}
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3730 struct qeth_qdio_out_buffer *buf,
3731 struct sk_buff *skb, struct qeth_hdr *hdr,
3732 unsigned int offset, unsigned int hd_len,
3733 bool flush)
3734{
3735 struct qdio_buffer *buffer = buf->buffer;
3736 bool is_first_elem = true;
3737
3738 __skb_queue_tail(&buf->skb_list, skb);
3739
3740
3741 if (hd_len) {
3742 int element = buf->next_element_to_fill;
3743 is_first_elem = false;
3744
3745 buffer->element[element].addr = hdr;
3746 buffer->element[element].length = hd_len;
3747 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3748
3749 buf->is_header[element] = ((void *)hdr != skb->data);
3750 buf->next_element_to_fill++;
3751 }
3752
3753 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3754
3755 if (!queue->do_pack) {
3756 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3757 } else {
3758 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3759
3760 QETH_TXQ_STAT_INC(queue, skbs_pack);
3761
3762 if (!flush &&
3763 buf->next_element_to_fill < queue->max_elements)
3764 return 0;
3765 }
3766
3767
3768 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3769 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3770 QDIO_MAX_BUFFERS_PER_Q;
3771 return 1;
3772}
3773
3774static int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue,
3775 struct sk_buff *skb, struct qeth_hdr *hdr,
3776 unsigned int offset, unsigned int hd_len)
3777{
3778 int index = queue->next_buf_to_fill;
3779 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
3780 struct netdev_queue *txq;
3781 bool stopped = false;
3782
3783
3784
3785
3786 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3787 return -EBUSY;
3788
3789 txq = netdev_get_tx_queue(queue->card->dev, skb_get_queue_mapping(skb));
3790
3791 if (atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3792
3793
3794
3795 QETH_TXQ_STAT_INC(queue, stopped);
3796 netif_tx_stop_queue(txq);
3797 stopped = true;
3798 }
3799
3800 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len, stopped);
3801 qeth_flush_buffers(queue, index, 1);
3802
3803 if (stopped && !qeth_out_queue_is_full(queue))
3804 netif_tx_start_queue(txq);
3805 return 0;
3806}
3807
3808int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3809 struct sk_buff *skb, struct qeth_hdr *hdr,
3810 unsigned int offset, unsigned int hd_len,
3811 int elements_needed)
3812{
3813 struct qeth_qdio_out_buffer *buffer;
3814 struct netdev_queue *txq;
3815 bool stopped = false;
3816 int start_index;
3817 int flush_count = 0;
3818 int do_pack = 0;
3819 int tmp;
3820 int rc = 0;
3821
3822
3823 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3824 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3825 start_index = queue->next_buf_to_fill;
3826 buffer = queue->bufs[queue->next_buf_to_fill];
3827
3828
3829
3830
3831 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3832 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3833 return -EBUSY;
3834 }
3835
3836 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3837
3838
3839 qeth_switch_to_packing_if_needed(queue);
3840 if (queue->do_pack) {
3841 do_pack = 1;
3842
3843 if (buffer->next_element_to_fill + elements_needed >
3844 queue->max_elements) {
3845
3846 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3847 flush_count++;
3848 queue->next_buf_to_fill =
3849 (queue->next_buf_to_fill + 1) %
3850 QDIO_MAX_BUFFERS_PER_Q;
3851 buffer = queue->bufs[queue->next_buf_to_fill];
3852
3853
3854 if (atomic_read(&buffer->state) !=
3855 QETH_QDIO_BUF_EMPTY) {
3856 qeth_flush_buffers(queue, start_index,
3857 flush_count);
3858 atomic_set(&queue->state,
3859 QETH_OUT_Q_UNLOCKED);
3860 rc = -EBUSY;
3861 goto out;
3862 }
3863 }
3864 }
3865
3866 if (buffer->next_element_to_fill == 0 &&
3867 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3868
3869
3870
3871 QETH_TXQ_STAT_INC(queue, stopped);
3872 netif_tx_stop_queue(txq);
3873 stopped = true;
3874 }
3875
3876 flush_count += qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len,
3877 stopped);
3878 if (flush_count)
3879 qeth_flush_buffers(queue, start_index, flush_count);
3880 else if (!atomic_read(&queue->set_pci_flags_count))
3881 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3882
3883
3884
3885
3886
3887
3888 while (atomic_dec_return(&queue->state)) {
3889 start_index = queue->next_buf_to_fill;
3890
3891 tmp = qeth_switch_to_nonpacking_if_needed(queue);
3892
3893
3894
3895
3896 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
3897 tmp = qeth_prep_flush_pack_buffer(queue);
3898 if (tmp) {
3899 qeth_flush_buffers(queue, start_index, tmp);
3900 flush_count += tmp;
3901 }
3902 }
3903out:
3904
3905 if (do_pack)
3906 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
3907
3908 if (stopped && !qeth_out_queue_is_full(queue))
3909 netif_tx_start_queue(txq);
3910 return rc;
3911}
3912EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3913
3914static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
3915 unsigned int payload_len, struct sk_buff *skb,
3916 unsigned int proto_len)
3917{
3918 struct qeth_hdr_ext_tso *ext = &hdr->ext;
3919
3920 ext->hdr_tot_len = sizeof(*ext);
3921 ext->imb_hdr_no = 1;
3922 ext->hdr_type = 1;
3923 ext->hdr_version = 1;
3924 ext->hdr_len = 28;
3925 ext->payload_len = payload_len;
3926 ext->mss = skb_shinfo(skb)->gso_size;
3927 ext->dg_hdr_len = proto_len;
3928}
3929
3930int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
3931 struct qeth_qdio_out_q *queue, int ipv,
3932 void (*fill_header)(struct qeth_qdio_out_q *queue,
3933 struct qeth_hdr *hdr, struct sk_buff *skb,
3934 int ipv, unsigned int data_len))
3935{
3936 unsigned int proto_len, hw_hdr_len;
3937 unsigned int frame_len = skb->len;
3938 bool is_tso = skb_is_gso(skb);
3939 unsigned int data_offset = 0;
3940 struct qeth_hdr *hdr = NULL;
3941 unsigned int hd_len = 0;
3942 unsigned int elements;
3943 int push_len, rc;
3944 bool is_sg;
3945
3946 if (is_tso) {
3947 hw_hdr_len = sizeof(struct qeth_hdr_tso);
3948 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3949 } else {
3950 hw_hdr_len = sizeof(struct qeth_hdr);
3951 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
3952 }
3953
3954 rc = skb_cow_head(skb, hw_hdr_len);
3955 if (rc)
3956 return rc;
3957
3958 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
3959 &elements);
3960 if (push_len < 0)
3961 return push_len;
3962 if (is_tso || !push_len) {
3963
3964 hd_len = hw_hdr_len + proto_len;
3965 data_offset = push_len + proto_len;
3966 }
3967 memset(hdr, 0, hw_hdr_len);
3968 fill_header(queue, hdr, skb, ipv, frame_len);
3969 if (is_tso)
3970 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
3971 frame_len - proto_len, skb, proto_len);
3972
3973 is_sg = skb_is_nonlinear(skb);
3974 if (IS_IQD(card)) {
3975 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
3976 hd_len);
3977 } else {
3978
3979 skb_orphan(skb);
3980 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
3981 hd_len, elements);
3982 }
3983
3984 if (!rc) {
3985 QETH_TXQ_STAT_ADD(queue, buf_elements, elements);
3986 if (is_sg)
3987 QETH_TXQ_STAT_INC(queue, skbs_sg);
3988 if (is_tso) {
3989 QETH_TXQ_STAT_INC(queue, skbs_tso);
3990 QETH_TXQ_STAT_ADD(queue, tso_bytes, frame_len);
3991 }
3992 } else {
3993 if (!push_len)
3994 kmem_cache_free(qeth_core_header_cache, hdr);
3995 }
3996 return rc;
3997}
3998EXPORT_SYMBOL_GPL(qeth_xmit);
3999
4000static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4001 struct qeth_reply *reply, unsigned long data)
4002{
4003 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4004 struct qeth_ipacmd_setadpparms *setparms;
4005
4006 QETH_CARD_TEXT(card, 4, "prmadpcb");
4007
4008 setparms = &(cmd->data.setadapterparms);
4009 if (qeth_setadpparms_inspect_rc(cmd)) {
4010 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4011 setparms->data.mode = SET_PROMISC_MODE_OFF;
4012 }
4013 card->info.promisc_mode = setparms->data.mode;
4014 return (cmd->hdr.return_code) ? -EIO : 0;
4015}
4016
4017void qeth_setadp_promisc_mode(struct qeth_card *card)
4018{
4019 enum qeth_ipa_promisc_modes mode;
4020 struct net_device *dev = card->dev;
4021 struct qeth_cmd_buffer *iob;
4022 struct qeth_ipa_cmd *cmd;
4023
4024 QETH_CARD_TEXT(card, 4, "setprom");
4025
4026 if (((dev->flags & IFF_PROMISC) &&
4027 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4028 (!(dev->flags & IFF_PROMISC) &&
4029 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4030 return;
4031 mode = SET_PROMISC_MODE_OFF;
4032 if (dev->flags & IFF_PROMISC)
4033 mode = SET_PROMISC_MODE_ON;
4034 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4035
4036 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4037 SETADP_DATA_SIZEOF(mode));
4038 if (!iob)
4039 return;
4040 cmd = __ipa_cmd(iob);
4041 cmd->data.setadapterparms.data.mode = mode;
4042 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4043}
4044EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4045
4046static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4047 struct qeth_reply *reply, unsigned long data)
4048{
4049 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4050 struct qeth_ipacmd_setadpparms *adp_cmd;
4051
4052 QETH_CARD_TEXT(card, 4, "chgmaccb");
4053 if (qeth_setadpparms_inspect_rc(cmd))
4054 return -EIO;
4055
4056 adp_cmd = &cmd->data.setadapterparms;
4057 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4058 return -EADDRNOTAVAIL;
4059
4060 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4061 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4062 return -EADDRNOTAVAIL;
4063
4064 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4065 return 0;
4066}
4067
4068int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4069{
4070 int rc;
4071 struct qeth_cmd_buffer *iob;
4072 struct qeth_ipa_cmd *cmd;
4073
4074 QETH_CARD_TEXT(card, 4, "chgmac");
4075
4076 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4077 SETADP_DATA_SIZEOF(change_addr));
4078 if (!iob)
4079 return -ENOMEM;
4080 cmd = __ipa_cmd(iob);
4081 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4082 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4083 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4084 card->dev->dev_addr);
4085 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4086 NULL);
4087 return rc;
4088}
4089EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4090
4091static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4092 struct qeth_reply *reply, unsigned long data)
4093{
4094 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4095 struct qeth_set_access_ctrl *access_ctrl_req;
4096 int fallback = *(int *)reply->param;
4097
4098 QETH_CARD_TEXT(card, 4, "setaccb");
4099 if (cmd->hdr.return_code)
4100 return -EIO;
4101 qeth_setadpparms_inspect_rc(cmd);
4102
4103 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4104 QETH_CARD_TEXT_(card, 2, "rc=%d",
4105 cmd->data.setadapterparms.hdr.return_code);
4106 if (cmd->data.setadapterparms.hdr.return_code !=
4107 SET_ACCESS_CTRL_RC_SUCCESS)
4108 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4109 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4110 cmd->data.setadapterparms.hdr.return_code);
4111 switch (cmd->data.setadapterparms.hdr.return_code) {
4112 case SET_ACCESS_CTRL_RC_SUCCESS:
4113 if (card->options.isolation == ISOLATION_MODE_NONE) {
4114 dev_info(&card->gdev->dev,
4115 "QDIO data connection isolation is deactivated\n");
4116 } else {
4117 dev_info(&card->gdev->dev,
4118 "QDIO data connection isolation is activated\n");
4119 }
4120 break;
4121 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4122 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4123 CARD_DEVID(card));
4124 if (fallback)
4125 card->options.isolation = card->options.prev_isolation;
4126 break;
4127 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4128 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4129 CARD_DEVID(card));
4130 if (fallback)
4131 card->options.isolation = card->options.prev_isolation;
4132 break;
4133 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4134 dev_err(&card->gdev->dev, "Adapter does not "
4135 "support QDIO data connection isolation\n");
4136 break;
4137 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4138 dev_err(&card->gdev->dev,
4139 "Adapter is dedicated. "
4140 "QDIO data connection isolation not supported\n");
4141 if (fallback)
4142 card->options.isolation = card->options.prev_isolation;
4143 break;
4144 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4145 dev_err(&card->gdev->dev,
4146 "TSO does not permit QDIO data connection isolation\n");
4147 if (fallback)
4148 card->options.isolation = card->options.prev_isolation;
4149 break;
4150 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4151 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4152 "support reflective relay mode\n");
4153 if (fallback)
4154 card->options.isolation = card->options.prev_isolation;
4155 break;
4156 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4157 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4158 "enabled at the adjacent switch port");
4159 if (fallback)
4160 card->options.isolation = card->options.prev_isolation;
4161 break;
4162 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4163 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4164 "at the adjacent switch failed\n");
4165 break;
4166 default:
4167
4168 if (fallback)
4169 card->options.isolation = card->options.prev_isolation;
4170 break;
4171 }
4172 return (cmd->hdr.return_code) ? -EIO : 0;
4173}
4174
4175static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4176 enum qeth_ipa_isolation_modes isolation, int fallback)
4177{
4178 int rc;
4179 struct qeth_cmd_buffer *iob;
4180 struct qeth_ipa_cmd *cmd;
4181 struct qeth_set_access_ctrl *access_ctrl_req;
4182
4183 QETH_CARD_TEXT(card, 4, "setacctl");
4184
4185 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4186 SETADP_DATA_SIZEOF(set_access_ctrl));
4187 if (!iob)
4188 return -ENOMEM;
4189 cmd = __ipa_cmd(iob);
4190 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4191 access_ctrl_req->subcmd_code = isolation;
4192
4193 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4194 &fallback);
4195 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4196 return rc;
4197}
4198
4199int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4200{
4201 int rc = 0;
4202
4203 QETH_CARD_TEXT(card, 4, "setactlo");
4204
4205 if ((IS_OSD(card) || IS_OSX(card)) &&
4206 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4207 rc = qeth_setadpparms_set_access_ctrl(card,
4208 card->options.isolation, fallback);
4209 if (rc) {
4210 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4211 rc, CARD_DEVID(card));
4212 rc = -EOPNOTSUPP;
4213 }
4214 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4215 card->options.isolation = ISOLATION_MODE_NONE;
4216
4217 dev_err(&card->gdev->dev, "Adapter does not "
4218 "support QDIO data connection isolation\n");
4219 rc = -EOPNOTSUPP;
4220 }
4221 return rc;
4222}
4223EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4224
4225void qeth_tx_timeout(struct net_device *dev)
4226{
4227 struct qeth_card *card;
4228
4229 card = dev->ml_priv;
4230 QETH_CARD_TEXT(card, 4, "txtimeo");
4231 qeth_schedule_recovery(card);
4232}
4233EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4234
4235static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4236{
4237 struct qeth_card *card = dev->ml_priv;
4238 int rc = 0;
4239
4240 switch (regnum) {
4241 case MII_BMCR:
4242 rc = BMCR_FULLDPLX;
4243 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4244 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4245 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4246 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4247 rc |= BMCR_SPEED100;
4248 break;
4249 case MII_BMSR:
4250 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4251 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4252 BMSR_100BASE4;
4253 break;
4254 case MII_PHYSID1:
4255 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4256 dev->dev_addr[2];
4257 rc = (rc >> 5) & 0xFFFF;
4258 break;
4259 case MII_PHYSID2:
4260 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4261 break;
4262 case MII_ADVERTISE:
4263 rc = ADVERTISE_ALL;
4264 break;
4265 case MII_LPA:
4266 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4267 LPA_100BASE4 | LPA_LPACK;
4268 break;
4269 case MII_EXPANSION:
4270 break;
4271 case MII_DCOUNTER:
4272 break;
4273 case MII_FCSCOUNTER:
4274 break;
4275 case MII_NWAYTEST:
4276 break;
4277 case MII_RERRCOUNTER:
4278 rc = card->stats.rx_errors;
4279 break;
4280 case MII_SREVISION:
4281 break;
4282 case MII_RESV1:
4283 break;
4284 case MII_LBRERROR:
4285 break;
4286 case MII_PHYADDR:
4287 break;
4288 case MII_RESV2:
4289 break;
4290 case MII_TPISTATUS:
4291 break;
4292 case MII_NCONFIG:
4293 break;
4294 default:
4295 break;
4296 }
4297 return rc;
4298}
4299
4300static int qeth_snmp_command_cb(struct qeth_card *card,
4301 struct qeth_reply *reply, unsigned long sdata)
4302{
4303 struct qeth_ipa_cmd *cmd;
4304 struct qeth_arp_query_info *qinfo;
4305 unsigned char *data;
4306 void *snmp_data;
4307 __u16 data_len;
4308
4309 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4310
4311 cmd = (struct qeth_ipa_cmd *) sdata;
4312 data = (unsigned char *)((char *)cmd - reply->offset);
4313 qinfo = (struct qeth_arp_query_info *) reply->param;
4314
4315 if (cmd->hdr.return_code) {
4316 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4317 return -EIO;
4318 }
4319 if (cmd->data.setadapterparms.hdr.return_code) {
4320 cmd->hdr.return_code =
4321 cmd->data.setadapterparms.hdr.return_code;
4322 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4323 return -EIO;
4324 }
4325 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4326 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4327 snmp_data = &cmd->data.setadapterparms.data.snmp;
4328 data_len -= offsetof(struct qeth_ipa_cmd,
4329 data.setadapterparms.data.snmp);
4330 } else {
4331 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4332 data_len -= offsetof(struct qeth_ipa_cmd,
4333 data.setadapterparms.data.snmp.request);
4334 }
4335
4336
4337 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4338 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4339 return -ENOSPC;
4340 }
4341 QETH_CARD_TEXT_(card, 4, "snore%i",
4342 cmd->data.setadapterparms.hdr.used_total);
4343 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4344 cmd->data.setadapterparms.hdr.seq_no);
4345
4346 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4347 qinfo->udata_offset += data_len;
4348
4349 if (cmd->data.setadapterparms.hdr.seq_no <
4350 cmd->data.setadapterparms.hdr.used_total)
4351 return 1;
4352 return 0;
4353}
4354
4355static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4356{
4357 struct qeth_snmp_ureq __user *ureq;
4358 struct qeth_cmd_buffer *iob;
4359 unsigned int req_len;
4360 struct qeth_arp_query_info qinfo = {0, };
4361 int rc = 0;
4362
4363 QETH_CARD_TEXT(card, 3, "snmpcmd");
4364
4365 if (IS_VM_NIC(card))
4366 return -EOPNOTSUPP;
4367
4368 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4369 IS_LAYER3(card))
4370 return -EOPNOTSUPP;
4371
4372 ureq = (struct qeth_snmp_ureq __user *) udata;
4373 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4374 get_user(req_len, &ureq->hdr.req_len))
4375 return -EFAULT;
4376
4377
4378 if (req_len > QETH_BUFSIZE)
4379 return -EINVAL;
4380
4381 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4382 if (!iob)
4383 return -ENOMEM;
4384
4385 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4386 &ureq->cmd, req_len)) {
4387 qeth_put_cmd(iob);
4388 return -EFAULT;
4389 }
4390
4391 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4392 if (!qinfo.udata) {
4393 qeth_put_cmd(iob);
4394 return -ENOMEM;
4395 }
4396 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4397
4398 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4399 if (rc)
4400 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4401 CARD_DEVID(card), rc);
4402 else {
4403 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4404 rc = -EFAULT;
4405 }
4406
4407 kfree(qinfo.udata);
4408 return rc;
4409}
4410
4411static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4412 struct qeth_reply *reply, unsigned long data)
4413{
4414 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4415 struct qeth_qoat_priv *priv;
4416 char *resdata;
4417 int resdatalen;
4418
4419 QETH_CARD_TEXT(card, 3, "qoatcb");
4420 if (qeth_setadpparms_inspect_rc(cmd))
4421 return -EIO;
4422
4423 priv = (struct qeth_qoat_priv *)reply->param;
4424 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4425 resdata = (char *)data + 28;
4426
4427 if (resdatalen > (priv->buffer_len - priv->response_len))
4428 return -ENOSPC;
4429
4430 memcpy((priv->buffer + priv->response_len), resdata,
4431 resdatalen);
4432 priv->response_len += resdatalen;
4433
4434 if (cmd->data.setadapterparms.hdr.seq_no <
4435 cmd->data.setadapterparms.hdr.used_total)
4436 return 1;
4437 return 0;
4438}
4439
4440static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4441{
4442 int rc = 0;
4443 struct qeth_cmd_buffer *iob;
4444 struct qeth_ipa_cmd *cmd;
4445 struct qeth_query_oat *oat_req;
4446 struct qeth_query_oat_data oat_data;
4447 struct qeth_qoat_priv priv;
4448 void __user *tmp;
4449
4450 QETH_CARD_TEXT(card, 3, "qoatcmd");
4451
4452 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4453 rc = -EOPNOTSUPP;
4454 goto out;
4455 }
4456
4457 if (copy_from_user(&oat_data, udata,
4458 sizeof(struct qeth_query_oat_data))) {
4459 rc = -EFAULT;
4460 goto out;
4461 }
4462
4463 priv.buffer_len = oat_data.buffer_len;
4464 priv.response_len = 0;
4465 priv.buffer = vzalloc(oat_data.buffer_len);
4466 if (!priv.buffer) {
4467 rc = -ENOMEM;
4468 goto out;
4469 }
4470
4471 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4472 SETADP_DATA_SIZEOF(query_oat));
4473 if (!iob) {
4474 rc = -ENOMEM;
4475 goto out_free;
4476 }
4477 cmd = __ipa_cmd(iob);
4478 oat_req = &cmd->data.setadapterparms.data.query_oat;
4479 oat_req->subcmd_code = oat_data.command;
4480
4481 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4482 &priv);
4483 if (!rc) {
4484 if (is_compat_task())
4485 tmp = compat_ptr(oat_data.ptr);
4486 else
4487 tmp = (void __user *)(unsigned long)oat_data.ptr;
4488
4489 if (copy_to_user(tmp, priv.buffer,
4490 priv.response_len)) {
4491 rc = -EFAULT;
4492 goto out_free;
4493 }
4494
4495 oat_data.response_len = priv.response_len;
4496
4497 if (copy_to_user(udata, &oat_data,
4498 sizeof(struct qeth_query_oat_data)))
4499 rc = -EFAULT;
4500 }
4501
4502out_free:
4503 vfree(priv.buffer);
4504out:
4505 return rc;
4506}
4507
4508static int qeth_query_card_info_cb(struct qeth_card *card,
4509 struct qeth_reply *reply, unsigned long data)
4510{
4511 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4512 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4513 struct qeth_query_card_info *card_info;
4514
4515 QETH_CARD_TEXT(card, 2, "qcrdincb");
4516 if (qeth_setadpparms_inspect_rc(cmd))
4517 return -EIO;
4518
4519 card_info = &cmd->data.setadapterparms.data.card_info;
4520 carrier_info->card_type = card_info->card_type;
4521 carrier_info->port_mode = card_info->port_mode;
4522 carrier_info->port_speed = card_info->port_speed;
4523 return 0;
4524}
4525
4526int qeth_query_card_info(struct qeth_card *card,
4527 struct carrier_info *carrier_info)
4528{
4529 struct qeth_cmd_buffer *iob;
4530
4531 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4532 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4533 return -EOPNOTSUPP;
4534 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4535 if (!iob)
4536 return -ENOMEM;
4537 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4538 (void *)carrier_info);
4539}
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549int qeth_vm_request_mac(struct qeth_card *card)
4550{
4551 struct diag26c_mac_resp *response;
4552 struct diag26c_mac_req *request;
4553 struct ccw_dev_id id;
4554 int rc;
4555
4556 QETH_CARD_TEXT(card, 2, "vmreqmac");
4557
4558 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4559 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4560 if (!request || !response) {
4561 rc = -ENOMEM;
4562 goto out;
4563 }
4564
4565 ccw_device_get_id(CARD_DDEV(card), &id);
4566 request->resp_buf_len = sizeof(*response);
4567 request->resp_version = DIAG26C_VERSION2;
4568 request->op_code = DIAG26C_GET_MAC;
4569 request->devno = id.devno;
4570
4571 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4572 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4573 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4574 if (rc)
4575 goto out;
4576 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4577
4578 if (request->resp_buf_len < sizeof(*response) ||
4579 response->version != request->resp_version) {
4580 rc = -EIO;
4581 QETH_CARD_TEXT(card, 2, "badresp");
4582 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4583 sizeof(request->resp_buf_len));
4584 } else if (!is_valid_ether_addr(response->mac)) {
4585 rc = -EINVAL;
4586 QETH_CARD_TEXT(card, 2, "badmac");
4587 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4588 } else {
4589 ether_addr_copy(card->dev->dev_addr, response->mac);
4590 }
4591
4592out:
4593 kfree(response);
4594 kfree(request);
4595 return rc;
4596}
4597EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4598
4599static void qeth_determine_capabilities(struct qeth_card *card)
4600{
4601 int rc;
4602 struct ccw_device *ddev;
4603 int ddev_offline = 0;
4604
4605 QETH_CARD_TEXT(card, 2, "detcapab");
4606 ddev = CARD_DDEV(card);
4607 if (!ddev->online) {
4608 ddev_offline = 1;
4609 rc = ccw_device_set_online(ddev);
4610 if (rc) {
4611 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4612 goto out;
4613 }
4614 }
4615
4616 rc = qeth_read_conf_data(card);
4617 if (rc) {
4618 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4619 CARD_DEVID(card), rc);
4620 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4621 goto out_offline;
4622 }
4623
4624 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4625 if (rc)
4626 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4627
4628 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4629 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4630 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4631 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4632 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
4633 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4634 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4635 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4636 dev_info(&card->gdev->dev,
4637 "Completion Queueing supported\n");
4638 } else {
4639 card->options.cq = QETH_CQ_NOTAVAILABLE;
4640 }
4641
4642
4643out_offline:
4644 if (ddev_offline == 1)
4645 ccw_device_set_offline(ddev);
4646out:
4647 return;
4648}
4649
4650static void qeth_qdio_establish_cq(struct qeth_card *card,
4651 struct qdio_buffer **in_sbal_ptrs,
4652 void (**queue_start_poll)
4653 (struct ccw_device *, int,
4654 unsigned long))
4655{
4656 int i;
4657
4658 if (card->options.cq == QETH_CQ_ENABLED) {
4659 int offset = QDIO_MAX_BUFFERS_PER_Q *
4660 (card->qdio.no_in_queues - 1);
4661 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4662 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4663 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4664 }
4665
4666 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4667 }
4668}
4669
4670static int qeth_qdio_establish(struct qeth_card *card)
4671{
4672 struct qdio_initialize init_data;
4673 char *qib_param_field;
4674 struct qdio_buffer **in_sbal_ptrs;
4675 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4676 struct qdio_buffer **out_sbal_ptrs;
4677 int i, j, k;
4678 int rc = 0;
4679
4680 QETH_CARD_TEXT(card, 2, "qdioest");
4681
4682 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4683 GFP_KERNEL);
4684 if (!qib_param_field) {
4685 rc = -ENOMEM;
4686 goto out_free_nothing;
4687 }
4688
4689 qeth_create_qib_param_field(card, qib_param_field);
4690 qeth_create_qib_param_field_blkt(card, qib_param_field);
4691
4692 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4693 sizeof(void *),
4694 GFP_KERNEL);
4695 if (!in_sbal_ptrs) {
4696 rc = -ENOMEM;
4697 goto out_free_qib_param;
4698 }
4699 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4700 in_sbal_ptrs[i] = (struct qdio_buffer *)
4701 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4702 }
4703
4704 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4705 GFP_KERNEL);
4706 if (!queue_start_poll) {
4707 rc = -ENOMEM;
4708 goto out_free_in_sbals;
4709 }
4710 for (i = 0; i < card->qdio.no_in_queues; ++i)
4711 queue_start_poll[i] = qeth_qdio_start_poll;
4712
4713 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4714
4715 out_sbal_ptrs =
4716 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4717 sizeof(void *),
4718 GFP_KERNEL);
4719 if (!out_sbal_ptrs) {
4720 rc = -ENOMEM;
4721 goto out_free_queue_start_poll;
4722 }
4723 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4724 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4725 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4726 card->qdio.out_qs[i]->bufs[j]->buffer);
4727 }
4728
4729 memset(&init_data, 0, sizeof(struct qdio_initialize));
4730 init_data.cdev = CARD_DDEV(card);
4731 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4732 QDIO_QETH_QFMT;
4733 init_data.qib_param_field_format = 0;
4734 init_data.qib_param_field = qib_param_field;
4735 init_data.no_input_qs = card->qdio.no_in_queues;
4736 init_data.no_output_qs = card->qdio.no_out_queues;
4737 init_data.input_handler = qeth_qdio_input_handler;
4738 init_data.output_handler = qeth_qdio_output_handler;
4739 init_data.queue_start_poll_array = queue_start_poll;
4740 init_data.int_parm = (unsigned long) card;
4741 init_data.input_sbal_addr_array = in_sbal_ptrs;
4742 init_data.output_sbal_addr_array = out_sbal_ptrs;
4743 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4744 init_data.scan_threshold = IS_IQD(card) ? 1 : 32;
4745
4746 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4747 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4748 rc = qdio_allocate(&init_data);
4749 if (rc) {
4750 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4751 goto out;
4752 }
4753 rc = qdio_establish(&init_data);
4754 if (rc) {
4755 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4756 qdio_free(CARD_DDEV(card));
4757 }
4758 }
4759
4760 switch (card->options.cq) {
4761 case QETH_CQ_ENABLED:
4762 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4763 break;
4764 case QETH_CQ_DISABLED:
4765 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4766 break;
4767 default:
4768 break;
4769 }
4770out:
4771 kfree(out_sbal_ptrs);
4772out_free_queue_start_poll:
4773 kfree(queue_start_poll);
4774out_free_in_sbals:
4775 kfree(in_sbal_ptrs);
4776out_free_qib_param:
4777 kfree(qib_param_field);
4778out_free_nothing:
4779 return rc;
4780}
4781
4782static void qeth_core_free_card(struct qeth_card *card)
4783{
4784 QETH_CARD_TEXT(card, 2, "freecrd");
4785 qeth_clean_channel(&card->read);
4786 qeth_clean_channel(&card->write);
4787 qeth_clean_channel(&card->data);
4788 qeth_put_cmd(card->read_cmd);
4789 destroy_workqueue(card->event_wq);
4790 qeth_free_qdio_queues(card);
4791 unregister_service_level(&card->qeth_service_level);
4792 dev_set_drvdata(&card->gdev->dev, NULL);
4793 kfree(card);
4794}
4795
4796void qeth_trace_features(struct qeth_card *card)
4797{
4798 QETH_CARD_TEXT(card, 2, "features");
4799 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4800 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4801 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4802 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4803 sizeof(card->info.diagass_support));
4804}
4805EXPORT_SYMBOL_GPL(qeth_trace_features);
4806
4807static struct ccw_device_id qeth_ids[] = {
4808 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4809 .driver_info = QETH_CARD_TYPE_OSD},
4810 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4811 .driver_info = QETH_CARD_TYPE_IQD},
4812 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4813 .driver_info = QETH_CARD_TYPE_OSN},
4814 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4815 .driver_info = QETH_CARD_TYPE_OSM},
4816 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4817 .driver_info = QETH_CARD_TYPE_OSX},
4818 {},
4819};
4820MODULE_DEVICE_TABLE(ccw, qeth_ids);
4821
4822static struct ccw_driver qeth_ccw_driver = {
4823 .driver = {
4824 .owner = THIS_MODULE,
4825 .name = "qeth",
4826 },
4827 .ids = qeth_ids,
4828 .probe = ccwgroup_probe_ccwdev,
4829 .remove = ccwgroup_remove_ccwdev,
4830};
4831
4832int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4833{
4834 int retries = 3;
4835 int rc;
4836
4837 QETH_CARD_TEXT(card, 2, "hrdsetup");
4838 atomic_set(&card->force_alloc_skb, 0);
4839 rc = qeth_update_from_chp_desc(card);
4840 if (rc)
4841 return rc;
4842retry:
4843 if (retries < 3)
4844 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4845 CARD_DEVID(card));
4846 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
4847 ccw_device_set_offline(CARD_DDEV(card));
4848 ccw_device_set_offline(CARD_WDEV(card));
4849 ccw_device_set_offline(CARD_RDEV(card));
4850 qdio_free(CARD_DDEV(card));
4851 rc = ccw_device_set_online(CARD_RDEV(card));
4852 if (rc)
4853 goto retriable;
4854 rc = ccw_device_set_online(CARD_WDEV(card));
4855 if (rc)
4856 goto retriable;
4857 rc = ccw_device_set_online(CARD_DDEV(card));
4858 if (rc)
4859 goto retriable;
4860retriable:
4861 if (rc == -ERESTARTSYS) {
4862 QETH_CARD_TEXT(card, 2, "break1");
4863 return rc;
4864 } else if (rc) {
4865 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4866 if (--retries < 0)
4867 goto out;
4868 else
4869 goto retry;
4870 }
4871 qeth_determine_capabilities(card);
4872 qeth_init_tokens(card);
4873 qeth_init_func_level(card);
4874
4875 rc = qeth_idx_activate_read_channel(card);
4876 if (rc == -EINTR) {
4877 QETH_CARD_TEXT(card, 2, "break2");
4878 return rc;
4879 } else if (rc) {
4880 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4881 if (--retries < 0)
4882 goto out;
4883 else
4884 goto retry;
4885 }
4886
4887 rc = qeth_idx_activate_write_channel(card);
4888 if (rc == -EINTR) {
4889 QETH_CARD_TEXT(card, 2, "break3");
4890 return rc;
4891 } else if (rc) {
4892 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4893 if (--retries < 0)
4894 goto out;
4895 else
4896 goto retry;
4897 }
4898 card->read_or_write_problem = 0;
4899 rc = qeth_mpc_initialize(card);
4900 if (rc) {
4901 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4902 goto out;
4903 }
4904
4905 rc = qeth_send_startlan(card);
4906 if (rc) {
4907 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4908 if (rc == -ENETDOWN) {
4909 dev_warn(&card->gdev->dev, "The LAN is offline\n");
4910 *carrier_ok = false;
4911 } else {
4912 goto out;
4913 }
4914 } else {
4915 *carrier_ok = true;
4916 }
4917
4918 card->options.ipa4.supported_funcs = 0;
4919 card->options.ipa6.supported_funcs = 0;
4920 card->options.adp.supported_funcs = 0;
4921 card->options.sbp.supported_funcs = 0;
4922 card->info.diagass_support = 0;
4923 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
4924 if (rc == -ENOMEM)
4925 goto out;
4926 if (qeth_is_supported(card, IPA_IPV6)) {
4927 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
4928 if (rc == -ENOMEM)
4929 goto out;
4930 }
4931 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
4932 rc = qeth_query_setadapterparms(card);
4933 if (rc < 0) {
4934 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
4935 goto out;
4936 }
4937 }
4938 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
4939 rc = qeth_query_setdiagass(card);
4940 if (rc < 0) {
4941 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
4942 goto out;
4943 }
4944 }
4945 return 0;
4946out:
4947 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4948 "an error on the device\n");
4949 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
4950 CARD_DEVID(card), rc);
4951 return rc;
4952}
4953EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4954
4955static void qeth_create_skb_frag(struct qdio_buffer_element *element,
4956 struct sk_buff *skb, int offset, int data_len)
4957{
4958 struct page *page = virt_to_page(element->addr);
4959 unsigned int next_frag;
4960
4961
4962 if (!skb->len) {
4963 unsigned int linear = min(data_len, skb_tailroom(skb));
4964
4965 skb_put_data(skb, element->addr + offset, linear);
4966 data_len -= linear;
4967 if (!data_len)
4968 return;
4969 offset += linear;
4970
4971 }
4972
4973 next_frag = skb_shinfo(skb)->nr_frags;
4974 get_page(page);
4975 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
4976}
4977
4978static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
4979{
4980 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
4981}
4982
4983struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4984 struct qeth_qdio_buffer *qethbuffer,
4985 struct qdio_buffer_element **__element, int *__offset,
4986 struct qeth_hdr **hdr)
4987{
4988 struct qdio_buffer_element *element = *__element;
4989 struct qdio_buffer *buffer = qethbuffer->buffer;
4990 int offset = *__offset;
4991 struct sk_buff *skb;
4992 int skb_len = 0;
4993 void *data_ptr;
4994 int data_len;
4995 int headroom = 0;
4996 int use_rx_sg = 0;
4997
4998
4999 while (element->length < offset + sizeof(struct qeth_hdr)) {
5000 if (qeth_is_last_sbale(element))
5001 return NULL;
5002 element++;
5003 offset = 0;
5004 }
5005 *hdr = element->addr + offset;
5006
5007 offset += sizeof(struct qeth_hdr);
5008 switch ((*hdr)->hdr.l2.id) {
5009 case QETH_HEADER_TYPE_LAYER2:
5010 skb_len = (*hdr)->hdr.l2.pkt_length;
5011 break;
5012 case QETH_HEADER_TYPE_LAYER3:
5013 skb_len = (*hdr)->hdr.l3.length;
5014 headroom = ETH_HLEN;
5015 break;
5016 case QETH_HEADER_TYPE_OSN:
5017 skb_len = (*hdr)->hdr.osn.pdu_length;
5018 headroom = sizeof(struct qeth_hdr);
5019 break;
5020 default:
5021 break;
5022 }
5023
5024 if (!skb_len)
5025 return NULL;
5026
5027 if (((skb_len >= card->options.rx_sg_cb) &&
5028 !IS_OSN(card) &&
5029 (!atomic_read(&card->force_alloc_skb))) ||
5030 (card->options.cq == QETH_CQ_ENABLED))
5031 use_rx_sg = 1;
5032
5033 if (use_rx_sg && qethbuffer->rx_skb) {
5034
5035 skb = qethbuffer->rx_skb;
5036 qethbuffer->rx_skb = NULL;
5037 } else {
5038 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5039
5040 skb = napi_alloc_skb(&card->napi, linear + headroom);
5041 }
5042 if (!skb)
5043 goto no_mem;
5044 if (headroom)
5045 skb_reserve(skb, headroom);
5046
5047 data_ptr = element->addr + offset;
5048 while (skb_len) {
5049 data_len = min(skb_len, (int)(element->length - offset));
5050 if (data_len) {
5051 if (use_rx_sg)
5052 qeth_create_skb_frag(element, skb, offset,
5053 data_len);
5054 else
5055 skb_put_data(skb, data_ptr, data_len);
5056 }
5057 skb_len -= data_len;
5058 if (skb_len) {
5059 if (qeth_is_last_sbale(element)) {
5060 QETH_CARD_TEXT(card, 4, "unexeob");
5061 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5062 dev_kfree_skb_any(skb);
5063 QETH_CARD_STAT_INC(card, rx_errors);
5064 return NULL;
5065 }
5066 element++;
5067 offset = 0;
5068 data_ptr = element->addr;
5069 } else {
5070 offset += data_len;
5071 }
5072 }
5073 *__element = element;
5074 *__offset = offset;
5075 if (use_rx_sg) {
5076 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5077 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5078 skb_shinfo(skb)->nr_frags);
5079 }
5080 return skb;
5081no_mem:
5082 if (net_ratelimit()) {
5083 QETH_CARD_TEXT(card, 2, "noskbmem");
5084 }
5085 QETH_CARD_STAT_INC(card, rx_dropped);
5086 return NULL;
5087}
5088EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5089
5090int qeth_poll(struct napi_struct *napi, int budget)
5091{
5092 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5093 int work_done = 0;
5094 struct qeth_qdio_buffer *buffer;
5095 int done;
5096 int new_budget = budget;
5097
5098 while (1) {
5099 if (!card->rx.b_count) {
5100 card->rx.qdio_err = 0;
5101 card->rx.b_count = qdio_get_next_buffers(
5102 card->data.ccwdev, 0, &card->rx.b_index,
5103 &card->rx.qdio_err);
5104 if (card->rx.b_count <= 0) {
5105 card->rx.b_count = 0;
5106 break;
5107 }
5108 card->rx.b_element =
5109 &card->qdio.in_q->bufs[card->rx.b_index]
5110 .buffer->element[0];
5111 card->rx.e_offset = 0;
5112 }
5113
5114 while (card->rx.b_count) {
5115 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5116 if (!(card->rx.qdio_err &&
5117 qeth_check_qdio_errors(card, buffer->buffer,
5118 card->rx.qdio_err, "qinerr")))
5119 work_done +=
5120 card->discipline->process_rx_buffer(
5121 card, new_budget, &done);
5122 else
5123 done = 1;
5124
5125 if (done) {
5126 QETH_CARD_STAT_INC(card, rx_bufs);
5127 qeth_put_buffer_pool_entry(card,
5128 buffer->pool_entry);
5129 qeth_queue_input_buffer(card, card->rx.b_index);
5130 card->rx.b_count--;
5131 if (card->rx.b_count) {
5132 card->rx.b_index =
5133 (card->rx.b_index + 1) %
5134 QDIO_MAX_BUFFERS_PER_Q;
5135 card->rx.b_element =
5136 &card->qdio.in_q
5137 ->bufs[card->rx.b_index]
5138 .buffer->element[0];
5139 card->rx.e_offset = 0;
5140 }
5141 }
5142
5143 if (work_done >= budget)
5144 goto out;
5145 else
5146 new_budget = budget - work_done;
5147 }
5148 }
5149
5150 napi_complete_done(napi, work_done);
5151 if (qdio_start_irq(card->data.ccwdev, 0))
5152 napi_schedule(&card->napi);
5153out:
5154 return work_done;
5155}
5156EXPORT_SYMBOL_GPL(qeth_poll);
5157
5158static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5159{
5160 if (!cmd->hdr.return_code)
5161 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5162 return cmd->hdr.return_code;
5163}
5164
5165static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5166 struct qeth_reply *reply,
5167 unsigned long data)
5168{
5169 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5170 struct qeth_ipa_caps *caps = reply->param;
5171
5172 if (qeth_setassparms_inspect_rc(cmd))
5173 return -EIO;
5174
5175 caps->supported = cmd->data.setassparms.data.caps.supported;
5176 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5177 return 0;
5178}
5179
5180int qeth_setassparms_cb(struct qeth_card *card,
5181 struct qeth_reply *reply, unsigned long data)
5182{
5183 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5184
5185 QETH_CARD_TEXT(card, 4, "defadpcb");
5186
5187 if (cmd->hdr.return_code)
5188 return -EIO;
5189
5190 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5191 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5192 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5193 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5194 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5195 return 0;
5196}
5197EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5198
5199struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5200 enum qeth_ipa_funcs ipa_func,
5201 u16 cmd_code,
5202 unsigned int data_length,
5203 enum qeth_prot_versions prot)
5204{
5205 struct qeth_ipacmd_setassparms *setassparms;
5206 struct qeth_ipacmd_setassparms_hdr *hdr;
5207 struct qeth_cmd_buffer *iob;
5208
5209 QETH_CARD_TEXT(card, 4, "getasscm");
5210 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5211 data_length +
5212 offsetof(struct qeth_ipacmd_setassparms,
5213 data));
5214 if (!iob)
5215 return NULL;
5216
5217 setassparms = &__ipa_cmd(iob)->data.setassparms;
5218 setassparms->assist_no = ipa_func;
5219
5220 hdr = &setassparms->hdr;
5221 hdr->length = sizeof(*hdr) + data_length;
5222 hdr->command_code = cmd_code;
5223 return iob;
5224}
5225EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5226
5227int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5228 enum qeth_ipa_funcs ipa_func,
5229 u16 cmd_code, u32 *data,
5230 enum qeth_prot_versions prot)
5231{
5232 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
5233 struct qeth_cmd_buffer *iob;
5234
5235 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5236 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5237 if (!iob)
5238 return -ENOMEM;
5239
5240 if (data)
5241 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
5242 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
5243}
5244EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5245
5246static void qeth_unregister_dbf_views(void)
5247{
5248 int x;
5249 for (x = 0; x < QETH_DBF_INFOS; x++) {
5250 debug_unregister(qeth_dbf[x].id);
5251 qeth_dbf[x].id = NULL;
5252 }
5253}
5254
5255void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5256{
5257 char dbf_txt_buf[32];
5258 va_list args;
5259
5260 if (!debug_level_enabled(id, level))
5261 return;
5262 va_start(args, fmt);
5263 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5264 va_end(args);
5265 debug_text_event(id, level, dbf_txt_buf);
5266}
5267EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5268
5269static int qeth_register_dbf_views(void)
5270{
5271 int ret;
5272 int x;
5273
5274 for (x = 0; x < QETH_DBF_INFOS; x++) {
5275
5276 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5277 qeth_dbf[x].pages,
5278 qeth_dbf[x].areas,
5279 qeth_dbf[x].len);
5280 if (qeth_dbf[x].id == NULL) {
5281 qeth_unregister_dbf_views();
5282 return -ENOMEM;
5283 }
5284
5285
5286 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5287 if (ret) {
5288 qeth_unregister_dbf_views();
5289 return ret;
5290 }
5291
5292
5293 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5294 }
5295
5296 return 0;
5297}
5298
5299static DEFINE_MUTEX(qeth_mod_mutex);
5300
5301int qeth_core_load_discipline(struct qeth_card *card,
5302 enum qeth_discipline_id discipline)
5303{
5304 mutex_lock(&qeth_mod_mutex);
5305 switch (discipline) {
5306 case QETH_DISCIPLINE_LAYER3:
5307 card->discipline = try_then_request_module(
5308 symbol_get(qeth_l3_discipline), "qeth_l3");
5309 break;
5310 case QETH_DISCIPLINE_LAYER2:
5311 card->discipline = try_then_request_module(
5312 symbol_get(qeth_l2_discipline), "qeth_l2");
5313 break;
5314 default:
5315 break;
5316 }
5317 mutex_unlock(&qeth_mod_mutex);
5318
5319 if (!card->discipline) {
5320 dev_err(&card->gdev->dev, "There is no kernel module to "
5321 "support discipline %d\n", discipline);
5322 return -EINVAL;
5323 }
5324
5325 card->options.layer = discipline;
5326 return 0;
5327}
5328
5329void qeth_core_free_discipline(struct qeth_card *card)
5330{
5331 if (IS_LAYER2(card))
5332 symbol_put(qeth_l2_discipline);
5333 else
5334 symbol_put(qeth_l3_discipline);
5335 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5336 card->discipline = NULL;
5337}
5338
5339const struct device_type qeth_generic_devtype = {
5340 .name = "qeth_generic",
5341 .groups = qeth_generic_attr_groups,
5342};
5343EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5344
5345static const struct device_type qeth_osn_devtype = {
5346 .name = "qeth_osn",
5347 .groups = qeth_osn_attr_groups,
5348};
5349
5350#define DBF_NAME_LEN 20
5351
5352struct qeth_dbf_entry {
5353 char dbf_name[DBF_NAME_LEN];
5354 debug_info_t *dbf_info;
5355 struct list_head dbf_list;
5356};
5357
5358static LIST_HEAD(qeth_dbf_list);
5359static DEFINE_MUTEX(qeth_dbf_list_mutex);
5360
5361static debug_info_t *qeth_get_dbf_entry(char *name)
5362{
5363 struct qeth_dbf_entry *entry;
5364 debug_info_t *rc = NULL;
5365
5366 mutex_lock(&qeth_dbf_list_mutex);
5367 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5368 if (strcmp(entry->dbf_name, name) == 0) {
5369 rc = entry->dbf_info;
5370 break;
5371 }
5372 }
5373 mutex_unlock(&qeth_dbf_list_mutex);
5374 return rc;
5375}
5376
5377static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5378{
5379 struct qeth_dbf_entry *new_entry;
5380
5381 card->debug = debug_register(name, 2, 1, 8);
5382 if (!card->debug) {
5383 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5384 goto err;
5385 }
5386 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5387 goto err_dbg;
5388 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5389 if (!new_entry)
5390 goto err_dbg;
5391 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5392 new_entry->dbf_info = card->debug;
5393 mutex_lock(&qeth_dbf_list_mutex);
5394 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5395 mutex_unlock(&qeth_dbf_list_mutex);
5396
5397 return 0;
5398
5399err_dbg:
5400 debug_unregister(card->debug);
5401err:
5402 return -ENOMEM;
5403}
5404
5405static void qeth_clear_dbf_list(void)
5406{
5407 struct qeth_dbf_entry *entry, *tmp;
5408
5409 mutex_lock(&qeth_dbf_list_mutex);
5410 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5411 list_del(&entry->dbf_list);
5412 debug_unregister(entry->dbf_info);
5413 kfree(entry);
5414 }
5415 mutex_unlock(&qeth_dbf_list_mutex);
5416}
5417
5418static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5419{
5420 struct net_device *dev;
5421
5422 switch (card->info.type) {
5423 case QETH_CARD_TYPE_IQD:
5424 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5425 ether_setup, QETH_MAX_QUEUES, 1);
5426 break;
5427 case QETH_CARD_TYPE_OSM:
5428 dev = alloc_etherdev(0);
5429 break;
5430 case QETH_CARD_TYPE_OSN:
5431 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5432 break;
5433 default:
5434 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
5435 }
5436
5437 if (!dev)
5438 return NULL;
5439
5440 dev->ml_priv = card;
5441 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5442 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5443
5444 dev->max_mtu = 0;
5445 dev->mtu = 0;
5446 SET_NETDEV_DEV(dev, &card->gdev->dev);
5447 netif_carrier_off(dev);
5448
5449 if (IS_OSN(card)) {
5450 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5451 } else {
5452 dev->ethtool_ops = &qeth_ethtool_ops;
5453 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5454 dev->hw_features |= NETIF_F_SG;
5455 dev->vlan_features |= NETIF_F_SG;
5456 if (IS_IQD(card)) {
5457 dev->features |= NETIF_F_SG;
5458 if (netif_set_real_num_tx_queues(dev,
5459 QETH_IQD_MIN_TXQ)) {
5460 free_netdev(dev);
5461 return NULL;
5462 }
5463 }
5464 }
5465
5466 return dev;
5467}
5468
5469struct net_device *qeth_clone_netdev(struct net_device *orig)
5470{
5471 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5472
5473 if (!clone)
5474 return NULL;
5475
5476 clone->dev_port = orig->dev_port;
5477 return clone;
5478}
5479
5480static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5481{
5482 struct qeth_card *card;
5483 struct device *dev;
5484 int rc;
5485 enum qeth_discipline_id enforced_disc;
5486 char dbf_name[DBF_NAME_LEN];
5487
5488 QETH_DBF_TEXT(SETUP, 2, "probedev");
5489
5490 dev = &gdev->dev;
5491 if (!get_device(dev))
5492 return -ENODEV;
5493
5494 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5495
5496 card = qeth_alloc_card(gdev);
5497 if (!card) {
5498 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5499 rc = -ENOMEM;
5500 goto err_dev;
5501 }
5502
5503 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5504 dev_name(&gdev->dev));
5505 card->debug = qeth_get_dbf_entry(dbf_name);
5506 if (!card->debug) {
5507 rc = qeth_add_dbf_entry(card, dbf_name);
5508 if (rc)
5509 goto err_card;
5510 }
5511
5512 qeth_setup_card(card);
5513 card->dev = qeth_alloc_netdev(card);
5514 if (!card->dev) {
5515 rc = -ENOMEM;
5516 goto err_card;
5517 }
5518
5519 card->qdio.no_out_queues = card->dev->num_tx_queues;
5520 rc = qeth_update_from_chp_desc(card);
5521 if (rc)
5522 goto err_chp_desc;
5523 qeth_determine_capabilities(card);
5524 qeth_set_blkt_defaults(card);
5525
5526 enforced_disc = qeth_enforce_discipline(card);
5527 switch (enforced_disc) {
5528 case QETH_DISCIPLINE_UNDETERMINED:
5529 gdev->dev.type = &qeth_generic_devtype;
5530 break;
5531 default:
5532 card->info.layer_enforced = true;
5533 rc = qeth_core_load_discipline(card, enforced_disc);
5534 if (rc)
5535 goto err_load;
5536
5537 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
5538 card->discipline->devtype;
5539 rc = card->discipline->setup(card->gdev);
5540 if (rc)
5541 goto err_disc;
5542 break;
5543 }
5544
5545 return 0;
5546
5547err_disc:
5548 qeth_core_free_discipline(card);
5549err_load:
5550err_chp_desc:
5551 free_netdev(card->dev);
5552err_card:
5553 qeth_core_free_card(card);
5554err_dev:
5555 put_device(dev);
5556 return rc;
5557}
5558
5559static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5560{
5561 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5562
5563 QETH_CARD_TEXT(card, 2, "removedv");
5564
5565 if (card->discipline) {
5566 card->discipline->remove(gdev);
5567 qeth_core_free_discipline(card);
5568 }
5569
5570 free_netdev(card->dev);
5571 qeth_core_free_card(card);
5572 put_device(&gdev->dev);
5573}
5574
5575static int qeth_core_set_online(struct ccwgroup_device *gdev)
5576{
5577 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5578 int rc = 0;
5579 enum qeth_discipline_id def_discipline;
5580
5581 if (!card->discipline) {
5582 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
5583 QETH_DISCIPLINE_LAYER2;
5584 rc = qeth_core_load_discipline(card, def_discipline);
5585 if (rc)
5586 goto err;
5587 rc = card->discipline->setup(card->gdev);
5588 if (rc) {
5589 qeth_core_free_discipline(card);
5590 goto err;
5591 }
5592 }
5593 rc = card->discipline->set_online(gdev);
5594err:
5595 return rc;
5596}
5597
5598static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5599{
5600 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5601 return card->discipline->set_offline(gdev);
5602}
5603
5604static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5605{
5606 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5607 qeth_set_allowed_threads(card, 0, 1);
5608 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5609 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5610 qeth_qdio_clear_card(card, 0);
5611 qeth_drain_output_queues(card);
5612 qdio_free(CARD_DDEV(card));
5613}
5614
5615static int qeth_suspend(struct ccwgroup_device *gdev)
5616{
5617 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5618
5619 qeth_set_allowed_threads(card, 0, 1);
5620 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
5621 if (gdev->state == CCWGROUP_OFFLINE)
5622 return 0;
5623
5624 card->discipline->set_offline(gdev);
5625 return 0;
5626}
5627
5628static int qeth_resume(struct ccwgroup_device *gdev)
5629{
5630 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5631 int rc;
5632
5633 rc = card->discipline->set_online(gdev);
5634
5635 qeth_set_allowed_threads(card, 0xffffffff, 0);
5636 if (rc)
5637 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
5638 return rc;
5639}
5640
5641static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5642 size_t count)
5643{
5644 int err;
5645
5646 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5647 buf);
5648
5649 return err ? err : count;
5650}
5651static DRIVER_ATTR_WO(group);
5652
5653static struct attribute *qeth_drv_attrs[] = {
5654 &driver_attr_group.attr,
5655 NULL,
5656};
5657static struct attribute_group qeth_drv_attr_group = {
5658 .attrs = qeth_drv_attrs,
5659};
5660static const struct attribute_group *qeth_drv_attr_groups[] = {
5661 &qeth_drv_attr_group,
5662 NULL,
5663};
5664
5665static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5666 .driver = {
5667 .groups = qeth_drv_attr_groups,
5668 .owner = THIS_MODULE,
5669 .name = "qeth",
5670 },
5671 .ccw_driver = &qeth_ccw_driver,
5672 .setup = qeth_core_probe_device,
5673 .remove = qeth_core_remove_device,
5674 .set_online = qeth_core_set_online,
5675 .set_offline = qeth_core_set_offline,
5676 .shutdown = qeth_core_shutdown,
5677 .prepare = NULL,
5678 .complete = NULL,
5679 .freeze = qeth_suspend,
5680 .thaw = qeth_resume,
5681 .restore = qeth_resume,
5682};
5683
5684struct qeth_card *qeth_get_card_by_busid(char *bus_id)
5685{
5686 struct ccwgroup_device *gdev;
5687 struct qeth_card *card;
5688
5689 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
5690 if (!gdev)
5691 return NULL;
5692
5693 card = dev_get_drvdata(&gdev->dev);
5694 put_device(&gdev->dev);
5695 return card;
5696}
5697EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
5698
5699int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5700{
5701 struct qeth_card *card = dev->ml_priv;
5702 struct mii_ioctl_data *mii_data;
5703 int rc = 0;
5704
5705 if (!card)
5706 return -ENODEV;
5707
5708 switch (cmd) {
5709 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5710 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5711 break;
5712 case SIOC_QETH_GET_CARD_TYPE:
5713 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
5714 !IS_VM_NIC(card))
5715 return 1;
5716 return 0;
5717 case SIOCGMIIPHY:
5718 mii_data = if_mii(rq);
5719 mii_data->phy_id = 0;
5720 break;
5721 case SIOCGMIIREG:
5722 mii_data = if_mii(rq);
5723 if (mii_data->phy_id != 0)
5724 rc = -EINVAL;
5725 else
5726 mii_data->val_out = qeth_mdio_read(dev,
5727 mii_data->phy_id, mii_data->reg_num);
5728 break;
5729 case SIOC_QETH_QUERY_OAT:
5730 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5731 break;
5732 default:
5733 if (card->discipline->do_ioctl)
5734 rc = card->discipline->do_ioctl(dev, rq, cmd);
5735 else
5736 rc = -EOPNOTSUPP;
5737 }
5738 if (rc)
5739 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5740 return rc;
5741}
5742EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5743
5744static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
5745 unsigned long data)
5746{
5747 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5748 u32 *features = reply->param;
5749
5750 if (qeth_setassparms_inspect_rc(cmd))
5751 return -EIO;
5752
5753 *features = cmd->data.setassparms.data.flags_32bit;
5754 return 0;
5755}
5756
5757static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5758 enum qeth_prot_versions prot)
5759{
5760 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
5761 NULL, prot);
5762}
5763
5764static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5765 enum qeth_prot_versions prot)
5766{
5767 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
5768 struct qeth_cmd_buffer *iob;
5769 struct qeth_ipa_caps caps;
5770 u32 features;
5771 int rc;
5772
5773
5774 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
5775 cstype == IPA_OUTBOUND_CHECKSUM)
5776 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
5777
5778 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
5779 prot);
5780 if (!iob)
5781 return -ENOMEM;
5782
5783 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
5784 if (rc)
5785 return rc;
5786
5787 if ((required_features & features) != required_features) {
5788 qeth_set_csum_off(card, cstype, prot);
5789 return -EOPNOTSUPP;
5790 }
5791
5792 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
5793 SETASS_DATA_SIZEOF(flags_32bit),
5794 prot);
5795 if (!iob) {
5796 qeth_set_csum_off(card, cstype, prot);
5797 return -ENOMEM;
5798 }
5799
5800 if (features & QETH_IPA_CHECKSUM_LP2LP)
5801 required_features |= QETH_IPA_CHECKSUM_LP2LP;
5802 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
5803 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5804 if (rc) {
5805 qeth_set_csum_off(card, cstype, prot);
5806 return rc;
5807 }
5808
5809 if (!qeth_ipa_caps_supported(&caps, required_features) ||
5810 !qeth_ipa_caps_enabled(&caps, required_features)) {
5811 qeth_set_csum_off(card, cstype, prot);
5812 return -EOPNOTSUPP;
5813 }
5814
5815 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
5816 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
5817 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
5818 cstype == IPA_OUTBOUND_CHECKSUM)
5819 dev_warn(&card->gdev->dev,
5820 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
5821 QETH_CARD_IFNAME(card));
5822 return 0;
5823}
5824
5825static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
5826 enum qeth_prot_versions prot)
5827{
5828 return on ? qeth_set_csum_on(card, cstype, prot) :
5829 qeth_set_csum_off(card, cstype, prot);
5830}
5831
5832static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
5833 unsigned long data)
5834{
5835 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5836 struct qeth_tso_start_data *tso_data = reply->param;
5837
5838 if (qeth_setassparms_inspect_rc(cmd))
5839 return -EIO;
5840
5841 tso_data->mss = cmd->data.setassparms.data.tso.mss;
5842 tso_data->supported = cmd->data.setassparms.data.tso.supported;
5843 return 0;
5844}
5845
5846static int qeth_set_tso_off(struct qeth_card *card,
5847 enum qeth_prot_versions prot)
5848{
5849 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
5850 IPA_CMD_ASS_STOP, NULL, prot);
5851}
5852
5853static int qeth_set_tso_on(struct qeth_card *card,
5854 enum qeth_prot_versions prot)
5855{
5856 struct qeth_tso_start_data tso_data;
5857 struct qeth_cmd_buffer *iob;
5858 struct qeth_ipa_caps caps;
5859 int rc;
5860
5861 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
5862 IPA_CMD_ASS_START, 0, prot);
5863 if (!iob)
5864 return -ENOMEM;
5865
5866 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
5867 if (rc)
5868 return rc;
5869
5870 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
5871 qeth_set_tso_off(card, prot);
5872 return -EOPNOTSUPP;
5873 }
5874
5875 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
5876 IPA_CMD_ASS_ENABLE,
5877 SETASS_DATA_SIZEOF(caps), prot);
5878 if (!iob) {
5879 qeth_set_tso_off(card, prot);
5880 return -ENOMEM;
5881 }
5882
5883
5884 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
5885 QETH_IPA_LARGE_SEND_TCP;
5886 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5887 if (rc) {
5888 qeth_set_tso_off(card, prot);
5889 return rc;
5890 }
5891
5892 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
5893 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
5894 qeth_set_tso_off(card, prot);
5895 return -EOPNOTSUPP;
5896 }
5897
5898 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
5899 tso_data.mss);
5900 return 0;
5901}
5902
5903static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
5904 enum qeth_prot_versions prot)
5905{
5906 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
5907}
5908
5909static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
5910{
5911 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
5912 int rc_ipv6;
5913
5914 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
5915 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
5916 QETH_PROT_IPV4);
5917 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
5918
5919 return rc_ipv4;
5920
5921 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
5922 QETH_PROT_IPV6);
5923
5924 if (on)
5925
5926 return (rc_ipv6) ? rc_ipv4 : 0;
5927
5928
5929 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
5930}
5931
5932
5933
5934
5935
5936void qeth_enable_hw_features(struct net_device *dev)
5937{
5938 struct qeth_card *card = dev->ml_priv;
5939 netdev_features_t features;
5940
5941 features = dev->features;
5942
5943
5944
5945 dev->features &= ~dev->hw_features;
5946
5947 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
5948 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
5949 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
5950 }
5951 netdev_update_features(dev);
5952 if (features != dev->features)
5953 dev_warn(&card->gdev->dev,
5954 "Device recovery failed to restore all offload features\n");
5955}
5956EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
5957
5958int qeth_set_features(struct net_device *dev, netdev_features_t features)
5959{
5960 struct qeth_card *card = dev->ml_priv;
5961 netdev_features_t changed = dev->features ^ features;
5962 int rc = 0;
5963
5964 QETH_CARD_TEXT(card, 2, "setfeat");
5965 QETH_CARD_HEX(card, 2, &features, sizeof(features));
5966
5967 if ((changed & NETIF_F_IP_CSUM)) {
5968 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
5969 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
5970 if (rc)
5971 changed ^= NETIF_F_IP_CSUM;
5972 }
5973 if (changed & NETIF_F_IPV6_CSUM) {
5974 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
5975 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
5976 if (rc)
5977 changed ^= NETIF_F_IPV6_CSUM;
5978 }
5979 if (changed & NETIF_F_RXCSUM) {
5980 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
5981 if (rc)
5982 changed ^= NETIF_F_RXCSUM;
5983 }
5984 if (changed & NETIF_F_TSO) {
5985 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
5986 QETH_PROT_IPV4);
5987 if (rc)
5988 changed ^= NETIF_F_TSO;
5989 }
5990 if (changed & NETIF_F_TSO6) {
5991 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
5992 QETH_PROT_IPV6);
5993 if (rc)
5994 changed ^= NETIF_F_TSO6;
5995 }
5996
5997
5998 if ((dev->features ^ features) == changed)
5999 return 0;
6000
6001 dev->features ^= changed;
6002 return -EIO;
6003}
6004EXPORT_SYMBOL_GPL(qeth_set_features);
6005
6006netdev_features_t qeth_fix_features(struct net_device *dev,
6007 netdev_features_t features)
6008{
6009 struct qeth_card *card = dev->ml_priv;
6010
6011 QETH_CARD_TEXT(card, 2, "fixfeat");
6012 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6013 features &= ~NETIF_F_IP_CSUM;
6014 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6015 features &= ~NETIF_F_IPV6_CSUM;
6016 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6017 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6018 features &= ~NETIF_F_RXCSUM;
6019 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6020 features &= ~NETIF_F_TSO;
6021 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6022 features &= ~NETIF_F_TSO6;
6023
6024 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6025 return features;
6026}
6027EXPORT_SYMBOL_GPL(qeth_fix_features);
6028
6029netdev_features_t qeth_features_check(struct sk_buff *skb,
6030 struct net_device *dev,
6031 netdev_features_t features)
6032{
6033
6034
6035
6036
6037
6038
6039
6040 if (netif_needs_gso(skb, features)) {
6041
6042 unsigned int doffset = skb->data - skb_mac_header(skb);
6043 unsigned int hsize = skb_shinfo(skb)->gso_size;
6044 unsigned int hroom = skb_headroom(skb);
6045
6046
6047 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6048 features &= ~NETIF_F_SG;
6049 }
6050
6051 return vlan_features_check(skb, features);
6052}
6053EXPORT_SYMBOL_GPL(qeth_features_check);
6054
6055void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6056{
6057 struct qeth_card *card = dev->ml_priv;
6058 struct qeth_qdio_out_q *queue;
6059 unsigned int i;
6060
6061 QETH_CARD_TEXT(card, 5, "getstat");
6062
6063 stats->rx_packets = card->stats.rx_packets;
6064 stats->rx_bytes = card->stats.rx_bytes;
6065 stats->rx_errors = card->stats.rx_errors;
6066 stats->rx_dropped = card->stats.rx_dropped;
6067 stats->multicast = card->stats.rx_multicast;
6068
6069 for (i = 0; i < card->qdio.no_out_queues; i++) {
6070 queue = card->qdio.out_qs[i];
6071
6072 stats->tx_packets += queue->stats.tx_packets;
6073 stats->tx_bytes += queue->stats.tx_bytes;
6074 stats->tx_errors += queue->stats.tx_errors;
6075 stats->tx_dropped += queue->stats.tx_dropped;
6076 }
6077}
6078EXPORT_SYMBOL_GPL(qeth_get_stats64);
6079
6080u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6081 u8 cast_type, struct net_device *sb_dev)
6082{
6083 if (cast_type != RTN_UNICAST)
6084 return QETH_IQD_MCAST_TXQ;
6085 return QETH_IQD_MIN_UCAST_TXQ;
6086}
6087EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6088
6089int qeth_open(struct net_device *dev)
6090{
6091 struct qeth_card *card = dev->ml_priv;
6092
6093 QETH_CARD_TEXT(card, 4, "qethopen");
6094
6095 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6096 return -EIO;
6097
6098 card->data.state = CH_STATE_UP;
6099 netif_tx_start_all_queues(dev);
6100
6101 napi_enable(&card->napi);
6102 local_bh_disable();
6103 napi_schedule(&card->napi);
6104
6105 local_bh_enable();
6106 return 0;
6107}
6108EXPORT_SYMBOL_GPL(qeth_open);
6109
6110int qeth_stop(struct net_device *dev)
6111{
6112 struct qeth_card *card = dev->ml_priv;
6113
6114 QETH_CARD_TEXT(card, 4, "qethstop");
6115 netif_tx_disable(dev);
6116 napi_disable(&card->napi);
6117 return 0;
6118}
6119EXPORT_SYMBOL_GPL(qeth_stop);
6120
6121static int __init qeth_core_init(void)
6122{
6123 int rc;
6124
6125 pr_info("loading core functions\n");
6126
6127 rc = qeth_register_dbf_views();
6128 if (rc)
6129 goto dbf_err;
6130 qeth_core_root_dev = root_device_register("qeth");
6131 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6132 if (rc)
6133 goto register_err;
6134 qeth_core_header_cache =
6135 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6136 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6137 0, NULL);
6138 if (!qeth_core_header_cache) {
6139 rc = -ENOMEM;
6140 goto slab_err;
6141 }
6142 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6143 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6144 if (!qeth_qdio_outbuf_cache) {
6145 rc = -ENOMEM;
6146 goto cqslab_err;
6147 }
6148 rc = ccw_driver_register(&qeth_ccw_driver);
6149 if (rc)
6150 goto ccw_err;
6151 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6152 if (rc)
6153 goto ccwgroup_err;
6154
6155 return 0;
6156
6157ccwgroup_err:
6158 ccw_driver_unregister(&qeth_ccw_driver);
6159ccw_err:
6160 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6161cqslab_err:
6162 kmem_cache_destroy(qeth_core_header_cache);
6163slab_err:
6164 root_device_unregister(qeth_core_root_dev);
6165register_err:
6166 qeth_unregister_dbf_views();
6167dbf_err:
6168 pr_err("Initializing the qeth device driver failed\n");
6169 return rc;
6170}
6171
6172static void __exit qeth_core_exit(void)
6173{
6174 qeth_clear_dbf_list();
6175 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6176 ccw_driver_unregister(&qeth_ccw_driver);
6177 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6178 kmem_cache_destroy(qeth_core_header_cache);
6179 root_device_unregister(qeth_core_root_dev);
6180 qeth_unregister_dbf_views();
6181 pr_info("core functions removed\n");
6182}
6183
6184module_init(qeth_core_init);
6185module_exit(qeth_core_exit);
6186MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6187MODULE_DESCRIPTION("qeth core functions");
6188MODULE_LICENSE("GPL");
6189
