1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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>
20 #include <linux/tcp.h>
21 #include <linux/mii.h>
22 #include <linux/kthread.h>
23 #include <linux/slab.h>
24 #include <linux/if_vlan.h>
25 #include <linux/netdevice.h>
26 #include <linux/netdev_features.h>
27 #include <linux/skbuff.h>
29 #include <net/iucv/af_iucv.h>
30 #include <net/dsfield.h>
32 #include <asm/ebcdic.h>
33 #include <asm/chpid.h>
35 #include <asm/sysinfo.h>
38 #include <asm/ccwdev.h>
39 #include <asm/cpcmd.h>
41 #include "qeth_core.h"
43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
44 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
46 [QETH_DBF_SETUP] = {"qeth_setup",
47 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
48 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
49 &debug_sprintf_view, NULL},
50 [QETH_DBF_CTRL] = {"qeth_control",
51 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
53 EXPORT_SYMBOL_GPL(qeth_dbf);
55 struct qeth_card_list_struct qeth_core_card_list;
56 EXPORT_SYMBOL_GPL(qeth_core_card_list);
57 struct kmem_cache *qeth_core_header_cache;
58 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
59 static struct kmem_cache *qeth_qdio_outbuf_cache;
61 static struct device *qeth_core_root_dev;
62 static struct lock_class_key qdio_out_skb_queue_key;
63 static struct mutex qeth_mod_mutex;
65 static void qeth_send_control_data_cb(struct qeth_channel *,
66 struct qeth_cmd_buffer *);
67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
68 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
69 static void qeth_free_buffer_pool(struct qeth_card *);
70 static int qeth_qdio_establish(struct qeth_card *);
71 static void qeth_free_qdio_buffers(struct qeth_card *);
72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
73 struct qeth_qdio_out_buffer *buf,
74 enum iucv_tx_notify notification);
75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
76 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
78 struct workqueue_struct *qeth_wq;
79 EXPORT_SYMBOL_GPL(qeth_wq);
81 int qeth_card_hw_is_reachable(struct qeth_card *card)
83 return (card->state == CARD_STATE_SOFTSETUP) ||
84 (card->state == CARD_STATE_UP);
86 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
88 static void qeth_close_dev_handler(struct work_struct *work)
90 struct qeth_card *card;
92 card = container_of(work, struct qeth_card, close_dev_work);
93 QETH_CARD_TEXT(card, 2, "cldevhdl");
97 ccwgroup_set_offline(card->gdev);
100 void qeth_close_dev(struct qeth_card *card)
102 QETH_CARD_TEXT(card, 2, "cldevsubm");
103 queue_work(qeth_wq, &card->close_dev_work);
105 EXPORT_SYMBOL_GPL(qeth_close_dev);
107 static const char *qeth_get_cardname(struct qeth_card *card)
109 if (card->info.guestlan) {
110 switch (card->info.type) {
111 case QETH_CARD_TYPE_OSD:
112 return " Virtual NIC QDIO";
113 case QETH_CARD_TYPE_IQD:
114 return " Virtual NIC Hiper";
115 case QETH_CARD_TYPE_OSM:
116 return " Virtual NIC QDIO - OSM";
117 case QETH_CARD_TYPE_OSX:
118 return " Virtual NIC QDIO - OSX";
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 return " OSD Express";
126 case QETH_CARD_TYPE_IQD:
127 return " HiperSockets";
128 case QETH_CARD_TYPE_OSN:
130 case QETH_CARD_TYPE_OSM:
132 case QETH_CARD_TYPE_OSX:
141 /* max length to be returned: 14 */
142 const char *qeth_get_cardname_short(struct qeth_card *card)
144 if (card->info.guestlan) {
145 switch (card->info.type) {
146 case QETH_CARD_TYPE_OSD:
147 return "Virt.NIC QDIO";
148 case QETH_CARD_TYPE_IQD:
149 return "Virt.NIC Hiper";
150 case QETH_CARD_TYPE_OSM:
151 return "Virt.NIC OSM";
152 case QETH_CARD_TYPE_OSX:
153 return "Virt.NIC OSX";
158 switch (card->info.type) {
159 case QETH_CARD_TYPE_OSD:
160 switch (card->info.link_type) {
161 case QETH_LINK_TYPE_FAST_ETH:
163 case QETH_LINK_TYPE_HSTR:
165 case QETH_LINK_TYPE_GBIT_ETH:
167 case QETH_LINK_TYPE_10GBIT_ETH:
169 case QETH_LINK_TYPE_LANE_ETH100:
170 return "OSD_FE_LANE";
171 case QETH_LINK_TYPE_LANE_TR:
172 return "OSD_TR_LANE";
173 case QETH_LINK_TYPE_LANE_ETH1000:
174 return "OSD_GbE_LANE";
175 case QETH_LINK_TYPE_LANE:
176 return "OSD_ATM_LANE";
178 return "OSD_Express";
180 case QETH_CARD_TYPE_IQD:
181 return "HiperSockets";
182 case QETH_CARD_TYPE_OSN:
184 case QETH_CARD_TYPE_OSM:
186 case QETH_CARD_TYPE_OSX:
195 void qeth_set_recovery_task(struct qeth_card *card)
197 card->recovery_task = current;
199 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
201 void qeth_clear_recovery_task(struct qeth_card *card)
203 card->recovery_task = NULL;
205 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
207 static bool qeth_is_recovery_task(const struct qeth_card *card)
209 return card->recovery_task == current;
212 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
213 int clear_start_mask)
217 spin_lock_irqsave(&card->thread_mask_lock, flags);
218 card->thread_allowed_mask = threads;
219 if (clear_start_mask)
220 card->thread_start_mask &= threads;
221 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
222 wake_up(&card->wait_q);
224 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
226 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
231 spin_lock_irqsave(&card->thread_mask_lock, flags);
232 rc = (card->thread_running_mask & threads);
233 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
236 EXPORT_SYMBOL_GPL(qeth_threads_running);
238 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
240 if (qeth_is_recovery_task(card))
242 return wait_event_interruptible(card->wait_q,
243 qeth_threads_running(card, threads) == 0);
245 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
247 void qeth_clear_working_pool_list(struct qeth_card *card)
249 struct qeth_buffer_pool_entry *pool_entry, *tmp;
251 QETH_CARD_TEXT(card, 5, "clwrklst");
252 list_for_each_entry_safe(pool_entry, tmp,
253 &card->qdio.in_buf_pool.entry_list, list){
254 list_del(&pool_entry->list);
257 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
259 static int qeth_alloc_buffer_pool(struct qeth_card *card)
261 struct qeth_buffer_pool_entry *pool_entry;
265 QETH_CARD_TEXT(card, 5, "alocpool");
266 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
267 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
269 qeth_free_buffer_pool(card);
272 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
273 ptr = (void *) __get_free_page(GFP_KERNEL);
276 free_page((unsigned long)
277 pool_entry->elements[--j]);
279 qeth_free_buffer_pool(card);
282 pool_entry->elements[j] = ptr;
284 list_add(&pool_entry->init_list,
285 &card->qdio.init_pool.entry_list);
290 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
292 QETH_CARD_TEXT(card, 2, "realcbp");
294 if ((card->state != CARD_STATE_DOWN) &&
295 (card->state != CARD_STATE_RECOVER))
298 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
299 qeth_clear_working_pool_list(card);
300 qeth_free_buffer_pool(card);
301 card->qdio.in_buf_pool.buf_count = bufcnt;
302 card->qdio.init_pool.buf_count = bufcnt;
303 return qeth_alloc_buffer_pool(card);
305 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
307 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
312 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
316 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
318 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
324 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
329 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
330 q->bufs[i].buffer = q->qdio_bufs[i];
332 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
336 static int qeth_cq_init(struct qeth_card *card)
340 if (card->options.cq == QETH_CQ_ENABLED) {
341 QETH_DBF_TEXT(SETUP, 2, "cqinit");
342 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
343 QDIO_MAX_BUFFERS_PER_Q);
344 card->qdio.c_q->next_buf_to_init = 127;
345 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
346 card->qdio.no_in_queues - 1, 0,
349 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
358 static int qeth_alloc_cq(struct qeth_card *card)
362 if (card->options.cq == QETH_CQ_ENABLED) {
364 struct qdio_outbuf_state *outbuf_states;
366 QETH_DBF_TEXT(SETUP, 2, "cqon");
367 card->qdio.c_q = qeth_alloc_qdio_queue();
368 if (!card->qdio.c_q) {
372 card->qdio.no_in_queues = 2;
373 card->qdio.out_bufstates =
374 kcalloc(card->qdio.no_out_queues *
375 QDIO_MAX_BUFFERS_PER_Q,
376 sizeof(struct qdio_outbuf_state),
378 outbuf_states = card->qdio.out_bufstates;
379 if (outbuf_states == NULL) {
383 for (i = 0; i < card->qdio.no_out_queues; ++i) {
384 card->qdio.out_qs[i]->bufstates = outbuf_states;
385 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
388 QETH_DBF_TEXT(SETUP, 2, "nocq");
389 card->qdio.c_q = NULL;
390 card->qdio.no_in_queues = 1;
392 QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
397 qeth_free_qdio_queue(card->qdio.c_q);
398 card->qdio.c_q = NULL;
400 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
404 static void qeth_free_cq(struct qeth_card *card)
406 if (card->qdio.c_q) {
407 --card->qdio.no_in_queues;
408 qeth_free_qdio_queue(card->qdio.c_q);
409 card->qdio.c_q = NULL;
411 kfree(card->qdio.out_bufstates);
412 card->qdio.out_bufstates = NULL;
415 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
418 enum iucv_tx_notify n;
422 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
428 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
429 TX_NOTIFY_UNREACHABLE;
432 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
433 TX_NOTIFY_GENERALERROR;
440 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
443 if (q->card->options.cq != QETH_CQ_ENABLED)
446 if (q->bufs[bidx]->next_pending != NULL) {
447 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
448 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
451 if (forced_cleanup ||
452 atomic_read(&c->state) ==
453 QETH_QDIO_BUF_HANDLED_DELAYED) {
454 struct qeth_qdio_out_buffer *f = c;
455 QETH_CARD_TEXT(f->q->card, 5, "fp");
456 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
457 /* release here to avoid interleaving between
458 outbound tasklet and inbound tasklet
459 regarding notifications and lifecycle */
460 qeth_release_skbs(c);
463 WARN_ON_ONCE(head->next_pending != f);
464 head->next_pending = c;
465 kmem_cache_free(qeth_qdio_outbuf_cache, f);
473 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
474 QETH_QDIO_BUF_HANDLED_DELAYED)) {
475 /* for recovery situations */
476 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
477 qeth_init_qdio_out_buf(q, bidx);
478 QETH_CARD_TEXT(q->card, 2, "clprecov");
483 static void qeth_qdio_handle_aob(struct qeth_card *card,
484 unsigned long phys_aob_addr)
487 struct qeth_qdio_out_buffer *buffer;
488 enum iucv_tx_notify notification;
491 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
492 QETH_CARD_TEXT(card, 5, "haob");
493 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
494 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
495 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
497 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
498 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
499 notification = TX_NOTIFY_OK;
501 WARN_ON_ONCE(atomic_read(&buffer->state) !=
502 QETH_QDIO_BUF_PENDING);
503 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
504 notification = TX_NOTIFY_DELAYED_OK;
507 if (aob->aorc != 0) {
508 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
509 notification = qeth_compute_cq_notification(aob->aorc, 1);
511 qeth_notify_skbs(buffer->q, buffer, notification);
514 /* Free dangling allocations. The attached skbs are handled by
515 * qeth_cleanup_handled_pending().
518 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
520 if (aob->sba[i] && buffer->is_header[i])
521 kmem_cache_free(qeth_core_header_cache,
522 (void *) aob->sba[i]);
524 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
526 qdio_release_aob(aob);
529 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
531 return card->options.cq == QETH_CQ_ENABLED &&
532 card->qdio.c_q != NULL &&
534 queue == card->qdio.no_in_queues - 1;
537 static int __qeth_issue_next_read(struct qeth_card *card)
540 struct qeth_cmd_buffer *iob;
542 QETH_CARD_TEXT(card, 5, "issnxrd");
543 if (card->read.state != CH_STATE_UP)
545 iob = qeth_get_buffer(&card->read);
547 dev_warn(&card->gdev->dev, "The qeth device driver "
548 "failed to recover an error on the device\n");
549 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
550 "available\n", dev_name(&card->gdev->dev));
553 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
554 QETH_CARD_TEXT(card, 6, "noirqpnd");
555 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
558 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
559 "rc=%i\n", dev_name(&card->gdev->dev), rc);
560 atomic_set(&card->read.irq_pending, 0);
561 card->read_or_write_problem = 1;
562 qeth_schedule_recovery(card);
563 wake_up(&card->wait_q);
568 static int qeth_issue_next_read(struct qeth_card *card)
572 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
573 ret = __qeth_issue_next_read(card);
574 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
579 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
581 struct qeth_reply *reply;
583 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
585 refcount_set(&reply->refcnt, 1);
586 atomic_set(&reply->received, 0);
592 static void qeth_get_reply(struct qeth_reply *reply)
594 refcount_inc(&reply->refcnt);
597 static void qeth_put_reply(struct qeth_reply *reply)
599 if (refcount_dec_and_test(&reply->refcnt))
603 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
604 struct qeth_card *card)
607 int com = cmd->hdr.command;
608 ipa_name = qeth_get_ipa_cmd_name(com);
610 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
612 ipa_name, com, dev_name(&card->gdev->dev),
613 QETH_CARD_IFNAME(card), rc,
614 qeth_get_ipa_msg(rc));
616 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
617 ipa_name, com, dev_name(&card->gdev->dev),
618 QETH_CARD_IFNAME(card));
621 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
622 struct qeth_cmd_buffer *iob)
624 struct qeth_ipa_cmd *cmd = NULL;
626 QETH_CARD_TEXT(card, 5, "chkipad");
627 if (IS_IPA(iob->data)) {
628 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
629 if (IS_IPA_REPLY(cmd)) {
630 if (cmd->hdr.command != IPA_CMD_SETCCID &&
631 cmd->hdr.command != IPA_CMD_DELCCID &&
632 cmd->hdr.command != IPA_CMD_MODCCID &&
633 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
634 qeth_issue_ipa_msg(cmd,
635 cmd->hdr.return_code, card);
638 switch (cmd->hdr.command) {
639 case IPA_CMD_STOPLAN:
640 if (cmd->hdr.return_code ==
641 IPA_RC_VEPA_TO_VEB_TRANSITION) {
642 dev_err(&card->gdev->dev,
643 "Interface %s is down because the "
644 "adjacent port is no longer in "
645 "reflective relay mode\n",
646 QETH_CARD_IFNAME(card));
647 qeth_close_dev(card);
649 dev_warn(&card->gdev->dev,
650 "The link for interface %s on CHPID"
652 QETH_CARD_IFNAME(card),
654 qeth_issue_ipa_msg(cmd,
655 cmd->hdr.return_code, card);
657 card->lan_online = 0;
658 if (card->dev && netif_carrier_ok(card->dev))
659 netif_carrier_off(card->dev);
661 case IPA_CMD_STARTLAN:
662 dev_info(&card->gdev->dev,
663 "The link for %s on CHPID 0x%X has"
665 QETH_CARD_IFNAME(card),
667 netif_carrier_on(card->dev);
668 card->lan_online = 1;
669 if (card->info.hwtrap)
670 card->info.hwtrap = 2;
671 qeth_schedule_recovery(card);
673 case IPA_CMD_SETBRIDGEPORT_IQD:
674 case IPA_CMD_SETBRIDGEPORT_OSA:
675 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
676 if (card->discipline->control_event_handler
681 case IPA_CMD_MODCCID:
683 case IPA_CMD_REGISTER_LOCAL_ADDR:
684 QETH_CARD_TEXT(card, 3, "irla");
686 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
687 QETH_CARD_TEXT(card, 3, "urla");
690 QETH_DBF_MESSAGE(2, "Received data is IPA "
691 "but not a reply!\n");
699 void qeth_clear_ipacmd_list(struct qeth_card *card)
701 struct qeth_reply *reply, *r;
704 QETH_CARD_TEXT(card, 4, "clipalst");
706 spin_lock_irqsave(&card->lock, flags);
707 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
708 qeth_get_reply(reply);
710 atomic_inc(&reply->received);
711 list_del_init(&reply->list);
712 wake_up(&reply->wait_q);
713 qeth_put_reply(reply);
715 spin_unlock_irqrestore(&card->lock, flags);
717 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
719 static int qeth_check_idx_response(struct qeth_card *card,
720 unsigned char *buffer)
725 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
726 if ((buffer[2] & 0xc0) == 0xc0) {
727 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n",
729 QETH_CARD_TEXT(card, 2, "ckidxres");
730 QETH_CARD_TEXT(card, 2, " idxterm");
731 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
732 if (buffer[4] == 0xf6) {
733 dev_err(&card->gdev->dev,
734 "The qeth device is not configured "
735 "for the OSI layer required by z/VM\n");
743 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
745 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
746 dev_get_drvdata(&cdev->dev))->dev);
750 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
753 struct qeth_card *card;
755 card = CARD_FROM_CDEV(channel->ccwdev);
756 QETH_CARD_TEXT(card, 4, "setupccw");
757 if (channel == &card->read)
758 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
760 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
761 channel->ccw.count = len;
762 channel->ccw.cda = (__u32) __pa(iob);
765 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
769 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
770 index = channel->io_buf_no;
772 if (channel->iob[index].state == BUF_STATE_FREE) {
773 channel->iob[index].state = BUF_STATE_LOCKED;
774 channel->io_buf_no = (channel->io_buf_no + 1) %
776 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
777 return channel->iob + index;
779 index = (index + 1) % QETH_CMD_BUFFER_NO;
780 } while (index != channel->io_buf_no);
785 void qeth_release_buffer(struct qeth_channel *channel,
786 struct qeth_cmd_buffer *iob)
790 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
791 spin_lock_irqsave(&channel->iob_lock, flags);
792 memset(iob->data, 0, QETH_BUFSIZE);
793 iob->state = BUF_STATE_FREE;
794 iob->callback = qeth_send_control_data_cb;
796 spin_unlock_irqrestore(&channel->iob_lock, flags);
797 wake_up(&channel->wait_q);
799 EXPORT_SYMBOL_GPL(qeth_release_buffer);
801 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
803 struct qeth_cmd_buffer *buffer = NULL;
806 spin_lock_irqsave(&channel->iob_lock, flags);
807 buffer = __qeth_get_buffer(channel);
808 spin_unlock_irqrestore(&channel->iob_lock, flags);
812 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
814 struct qeth_cmd_buffer *buffer;
815 wait_event(channel->wait_q,
816 ((buffer = qeth_get_buffer(channel)) != NULL));
819 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
821 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
825 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
826 qeth_release_buffer(channel, &channel->iob[cnt]);
827 channel->io_buf_no = 0;
829 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
831 static void qeth_send_control_data_cb(struct qeth_channel *channel,
832 struct qeth_cmd_buffer *iob)
834 struct qeth_card *card;
835 struct qeth_reply *reply, *r;
836 struct qeth_ipa_cmd *cmd;
841 card = CARD_FROM_CDEV(channel->ccwdev);
842 QETH_CARD_TEXT(card, 4, "sndctlcb");
843 rc = qeth_check_idx_response(card, iob->data);
848 qeth_clear_ipacmd_list(card);
849 qeth_schedule_recovery(card);
855 cmd = qeth_check_ipa_data(card, iob);
856 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
858 /*in case of OSN : check if cmd is set */
859 if (card->info.type == QETH_CARD_TYPE_OSN &&
861 cmd->hdr.command != IPA_CMD_STARTLAN &&
862 card->osn_info.assist_cb != NULL) {
863 card->osn_info.assist_cb(card->dev, cmd);
867 spin_lock_irqsave(&card->lock, flags);
868 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
869 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
870 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
871 qeth_get_reply(reply);
872 list_del_init(&reply->list);
873 spin_unlock_irqrestore(&card->lock, flags);
875 if (reply->callback != NULL) {
877 reply->offset = (__u16)((char *)cmd -
879 keep_reply = reply->callback(card,
883 keep_reply = reply->callback(card,
888 reply->rc = (u16) cmd->hdr.return_code;
892 spin_lock_irqsave(&card->lock, flags);
893 list_add_tail(&reply->list,
894 &card->cmd_waiter_list);
895 spin_unlock_irqrestore(&card->lock, flags);
897 atomic_inc(&reply->received);
898 wake_up(&reply->wait_q);
900 qeth_put_reply(reply);
904 spin_unlock_irqrestore(&card->lock, flags);
906 memcpy(&card->seqno.pdu_hdr_ack,
907 QETH_PDU_HEADER_SEQ_NO(iob->data),
909 qeth_release_buffer(channel, iob);
912 static int qeth_setup_channel(struct qeth_channel *channel)
916 QETH_DBF_TEXT(SETUP, 2, "setupch");
917 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
918 channel->iob[cnt].data =
919 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
920 if (channel->iob[cnt].data == NULL)
922 channel->iob[cnt].state = BUF_STATE_FREE;
923 channel->iob[cnt].channel = channel;
924 channel->iob[cnt].callback = qeth_send_control_data_cb;
925 channel->iob[cnt].rc = 0;
927 if (cnt < QETH_CMD_BUFFER_NO) {
929 kfree(channel->iob[cnt].data);
932 channel->io_buf_no = 0;
933 atomic_set(&channel->irq_pending, 0);
934 spin_lock_init(&channel->iob_lock);
936 init_waitqueue_head(&channel->wait_q);
940 static int qeth_set_thread_start_bit(struct qeth_card *card,
941 unsigned long thread)
945 spin_lock_irqsave(&card->thread_mask_lock, flags);
946 if (!(card->thread_allowed_mask & thread) ||
947 (card->thread_start_mask & thread)) {
948 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
951 card->thread_start_mask |= thread;
952 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
956 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
960 spin_lock_irqsave(&card->thread_mask_lock, flags);
961 card->thread_start_mask &= ~thread;
962 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
963 wake_up(&card->wait_q);
965 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
967 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
971 spin_lock_irqsave(&card->thread_mask_lock, flags);
972 card->thread_running_mask &= ~thread;
973 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
974 wake_up_all(&card->wait_q);
976 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
978 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
983 spin_lock_irqsave(&card->thread_mask_lock, flags);
984 if (card->thread_start_mask & thread) {
985 if ((card->thread_allowed_mask & thread) &&
986 !(card->thread_running_mask & thread)) {
988 card->thread_start_mask &= ~thread;
989 card->thread_running_mask |= thread;
993 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
997 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
1001 wait_event(card->wait_q,
1002 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1005 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
1007 void qeth_schedule_recovery(struct qeth_card *card)
1009 QETH_CARD_TEXT(card, 2, "startrec");
1010 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1011 schedule_work(&card->kernel_thread_starter);
1013 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1015 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1019 struct qeth_card *card;
1021 sense = (char *) irb->ecw;
1022 cstat = irb->scsw.cmd.cstat;
1023 dstat = irb->scsw.cmd.dstat;
1024 card = CARD_FROM_CDEV(cdev);
1026 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1027 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1028 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1029 QETH_CARD_TEXT(card, 2, "CGENCHK");
1030 dev_warn(&cdev->dev, "The qeth device driver "
1031 "failed to recover an error on the device\n");
1032 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1033 dev_name(&cdev->dev), dstat, cstat);
1034 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1039 if (dstat & DEV_STAT_UNIT_CHECK) {
1040 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1041 SENSE_RESETTING_EVENT_FLAG) {
1042 QETH_CARD_TEXT(card, 2, "REVIND");
1045 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1046 SENSE_COMMAND_REJECT_FLAG) {
1047 QETH_CARD_TEXT(card, 2, "CMDREJi");
1050 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1051 QETH_CARD_TEXT(card, 2, "AFFE");
1054 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1055 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1058 QETH_CARD_TEXT(card, 2, "DGENCHK");
1064 static long __qeth_check_irb_error(struct ccw_device *cdev,
1065 unsigned long intparm, struct irb *irb)
1067 struct qeth_card *card;
1069 card = CARD_FROM_CDEV(cdev);
1071 if (!card || !IS_ERR(irb))
1074 switch (PTR_ERR(irb)) {
1076 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1077 dev_name(&cdev->dev));
1078 QETH_CARD_TEXT(card, 2, "ckirberr");
1079 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1082 dev_warn(&cdev->dev, "A hardware operation timed out"
1083 " on the device\n");
1084 QETH_CARD_TEXT(card, 2, "ckirberr");
1085 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1086 if (intparm == QETH_RCD_PARM) {
1087 if (card->data.ccwdev == cdev) {
1088 card->data.state = CH_STATE_DOWN;
1089 wake_up(&card->wait_q);
1094 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1095 dev_name(&cdev->dev), PTR_ERR(irb));
1096 QETH_CARD_TEXT(card, 2, "ckirberr");
1097 QETH_CARD_TEXT(card, 2, " rc???");
1099 return PTR_ERR(irb);
1102 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1107 struct qeth_cmd_buffer *iob = NULL;
1108 struct qeth_channel *channel;
1109 struct qeth_card *card;
1111 card = CARD_FROM_CDEV(cdev);
1115 QETH_CARD_TEXT(card, 5, "irq");
1117 if (card->read.ccwdev == cdev) {
1118 channel = &card->read;
1119 QETH_CARD_TEXT(card, 5, "read");
1120 } else if (card->write.ccwdev == cdev) {
1121 channel = &card->write;
1122 QETH_CARD_TEXT(card, 5, "write");
1124 channel = &card->data;
1125 QETH_CARD_TEXT(card, 5, "data");
1128 if (qeth_intparm_is_iob(intparm))
1129 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1131 if (__qeth_check_irb_error(cdev, intparm, irb)) {
1132 /* IO was terminated, free its resources. */
1134 qeth_release_buffer(iob->channel, iob);
1135 atomic_set(&channel->irq_pending, 0);
1136 wake_up(&card->wait_q);
1140 atomic_set(&channel->irq_pending, 0);
1142 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1143 channel->state = CH_STATE_STOPPED;
1145 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1146 channel->state = CH_STATE_HALTED;
1148 /*let's wake up immediately on data channel*/
1149 if ((channel == &card->data) && (intparm != 0) &&
1150 (intparm != QETH_RCD_PARM))
1153 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1154 QETH_CARD_TEXT(card, 6, "clrchpar");
1155 /* we don't have to handle this further */
1158 if (intparm == QETH_HALT_CHANNEL_PARM) {
1159 QETH_CARD_TEXT(card, 6, "hltchpar");
1160 /* we don't have to handle this further */
1164 cstat = irb->scsw.cmd.cstat;
1165 dstat = irb->scsw.cmd.dstat;
1167 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1168 (dstat & DEV_STAT_UNIT_CHECK) ||
1170 if (irb->esw.esw0.erw.cons) {
1171 dev_warn(&channel->ccwdev->dev,
1172 "The qeth device driver failed to recover "
1173 "an error on the device\n");
1174 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1175 "0x%X dstat 0x%X\n",
1176 dev_name(&channel->ccwdev->dev), cstat, dstat);
1177 print_hex_dump(KERN_WARNING, "qeth: irb ",
1178 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1179 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1180 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1182 if (intparm == QETH_RCD_PARM) {
1183 channel->state = CH_STATE_DOWN;
1186 rc = qeth_get_problem(cdev, irb);
1188 card->read_or_write_problem = 1;
1189 qeth_clear_ipacmd_list(card);
1190 qeth_schedule_recovery(card);
1195 if (intparm == QETH_RCD_PARM) {
1196 channel->state = CH_STATE_RCD_DONE;
1199 if (channel == &card->data)
1201 if (channel == &card->read &&
1202 channel->state == CH_STATE_UP)
1203 __qeth_issue_next_read(card);
1205 if (iob && iob->callback)
1206 iob->callback(iob->channel, iob);
1209 wake_up(&card->wait_q);
1213 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1214 struct qeth_qdio_out_buffer *buf,
1215 enum iucv_tx_notify notification)
1217 struct sk_buff *skb;
1219 if (skb_queue_empty(&buf->skb_list))
1221 skb = skb_peek(&buf->skb_list);
1223 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1224 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1225 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1227 struct iucv_sock *iucv = iucv_sk(skb->sk);
1228 iucv->sk_txnotify(skb, notification);
1231 if (skb_queue_is_last(&buf->skb_list, skb))
1234 skb = skb_queue_next(&buf->skb_list, skb);
1240 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1242 struct sk_buff *skb;
1243 struct iucv_sock *iucv;
1244 int notify_general_error = 0;
1246 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1247 notify_general_error = 1;
1249 /* release may never happen from within CQ tasklet scope */
1250 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1252 skb = skb_dequeue(&buf->skb_list);
1254 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1255 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1256 if (notify_general_error &&
1257 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1259 iucv = iucv_sk(skb->sk);
1260 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1263 refcount_dec(&skb->users);
1264 dev_kfree_skb_any(skb);
1265 skb = skb_dequeue(&buf->skb_list);
1269 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1270 struct qeth_qdio_out_buffer *buf,
1271 enum qeth_qdio_buffer_states newbufstate)
1275 /* is PCI flag set on buffer? */
1276 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1277 atomic_dec(&queue->set_pci_flags_count);
1279 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1280 qeth_release_skbs(buf);
1282 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1283 if (buf->buffer->element[i].addr && buf->is_header[i])
1284 kmem_cache_free(qeth_core_header_cache,
1285 buf->buffer->element[i].addr);
1286 buf->is_header[i] = 0;
1287 buf->buffer->element[i].length = 0;
1288 buf->buffer->element[i].addr = NULL;
1289 buf->buffer->element[i].eflags = 0;
1290 buf->buffer->element[i].sflags = 0;
1292 buf->buffer->element[15].eflags = 0;
1293 buf->buffer->element[15].sflags = 0;
1294 buf->next_element_to_fill = 0;
1295 atomic_set(&buf->state, newbufstate);
1298 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1302 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1305 qeth_cleanup_handled_pending(q, j, 1);
1306 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1308 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1314 void qeth_clear_qdio_buffers(struct qeth_card *card)
1318 QETH_CARD_TEXT(card, 2, "clearqdbf");
1319 /* clear outbound buffers to free skbs */
1320 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1321 if (card->qdio.out_qs[i]) {
1322 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1326 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1328 static void qeth_free_buffer_pool(struct qeth_card *card)
1330 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1332 list_for_each_entry_safe(pool_entry, tmp,
1333 &card->qdio.init_pool.entry_list, init_list){
1334 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1335 free_page((unsigned long)pool_entry->elements[i]);
1336 list_del(&pool_entry->init_list);
1341 static void qeth_clean_channel(struct qeth_channel *channel)
1345 QETH_DBF_TEXT(SETUP, 2, "freech");
1346 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1347 kfree(channel->iob[cnt].data);
1350 static void qeth_set_single_write_queues(struct qeth_card *card)
1352 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1353 (card->qdio.no_out_queues == 4))
1354 qeth_free_qdio_buffers(card);
1356 card->qdio.no_out_queues = 1;
1357 if (card->qdio.default_out_queue != 0)
1358 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1360 card->qdio.default_out_queue = 0;
1363 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1365 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1366 (card->qdio.no_out_queues == 1)) {
1367 qeth_free_qdio_buffers(card);
1368 card->qdio.default_out_queue = 2;
1370 card->qdio.no_out_queues = 4;
1373 static void qeth_update_from_chp_desc(struct qeth_card *card)
1375 struct ccw_device *ccwdev;
1376 struct channel_path_desc_fmt0 *chp_dsc;
1378 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1380 ccwdev = card->data.ccwdev;
1381 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1385 card->info.func_level = 0x4100 + chp_dsc->desc;
1386 if (card->info.type == QETH_CARD_TYPE_IQD)
1389 /* CHPP field bit 6 == 1 -> single queue */
1390 if ((chp_dsc->chpp & 0x02) == 0x02)
1391 qeth_set_single_write_queues(card);
1393 qeth_set_multiple_write_queues(card);
1396 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1397 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1400 static void qeth_init_qdio_info(struct qeth_card *card)
1402 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1403 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1405 card->qdio.no_in_queues = 1;
1406 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1407 if (card->info.type == QETH_CARD_TYPE_IQD)
1408 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1410 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1411 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1412 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1413 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1416 static void qeth_set_intial_options(struct qeth_card *card)
1418 card->options.route4.type = NO_ROUTER;
1419 card->options.route6.type = NO_ROUTER;
1420 card->options.fake_broadcast = 0;
1421 card->options.performance_stats = 0;
1422 card->options.rx_sg_cb = QETH_RX_SG_CB;
1423 card->options.isolation = ISOLATION_MODE_NONE;
1424 card->options.cq = QETH_CQ_DISABLED;
1427 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1429 unsigned long flags;
1432 spin_lock_irqsave(&card->thread_mask_lock, flags);
1433 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1434 (u8) card->thread_start_mask,
1435 (u8) card->thread_allowed_mask,
1436 (u8) card->thread_running_mask);
1437 rc = (card->thread_start_mask & thread);
1438 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1442 static void qeth_start_kernel_thread(struct work_struct *work)
1444 struct task_struct *ts;
1445 struct qeth_card *card = container_of(work, struct qeth_card,
1446 kernel_thread_starter);
1447 QETH_CARD_TEXT(card , 2, "strthrd");
1449 if (card->read.state != CH_STATE_UP &&
1450 card->write.state != CH_STATE_UP)
1452 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1453 ts = kthread_run(card->discipline->recover, (void *)card,
1456 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1457 qeth_clear_thread_running_bit(card,
1458 QETH_RECOVER_THREAD);
1463 static void qeth_buffer_reclaim_work(struct work_struct *);
1464 static int qeth_setup_card(struct qeth_card *card)
1467 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1468 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1470 card->read.state = CH_STATE_DOWN;
1471 card->write.state = CH_STATE_DOWN;
1472 card->data.state = CH_STATE_DOWN;
1473 card->state = CARD_STATE_DOWN;
1474 card->lan_online = 0;
1475 card->read_or_write_problem = 0;
1477 spin_lock_init(&card->mclock);
1478 spin_lock_init(&card->lock);
1479 spin_lock_init(&card->ip_lock);
1480 spin_lock_init(&card->thread_mask_lock);
1481 mutex_init(&card->conf_mutex);
1482 mutex_init(&card->discipline_mutex);
1483 mutex_init(&card->vid_list_mutex);
1484 card->thread_start_mask = 0;
1485 card->thread_allowed_mask = 0;
1486 card->thread_running_mask = 0;
1487 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1488 INIT_LIST_HEAD(&card->cmd_waiter_list);
1489 init_waitqueue_head(&card->wait_q);
1490 /* initial options */
1491 qeth_set_intial_options(card);
1492 /* IP address takeover */
1493 INIT_LIST_HEAD(&card->ipato.entries);
1494 card->ipato.enabled = false;
1495 card->ipato.invert4 = false;
1496 card->ipato.invert6 = false;
1497 /* init QDIO stuff */
1498 qeth_init_qdio_info(card);
1499 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1500 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1504 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1506 struct qeth_card *card = container_of(slr, struct qeth_card,
1507 qeth_service_level);
1508 if (card->info.mcl_level[0])
1509 seq_printf(m, "qeth: %s firmware level %s\n",
1510 CARD_BUS_ID(card), card->info.mcl_level);
1513 static struct qeth_card *qeth_alloc_card(void)
1515 struct qeth_card *card;
1517 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1518 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1521 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1522 if (qeth_setup_channel(&card->read))
1524 if (qeth_setup_channel(&card->write))
1526 card->options.layer2 = -1;
1527 card->qeth_service_level.seq_print = qeth_core_sl_print;
1528 register_service_level(&card->qeth_service_level);
1532 qeth_clean_channel(&card->read);
1539 static void qeth_determine_card_type(struct qeth_card *card)
1541 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1543 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1544 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1545 card->info.type = CARD_RDEV(card)->id.driver_info;
1546 card->qdio.no_out_queues = QETH_MAX_QUEUES;
1547 if (card->info.type == QETH_CARD_TYPE_IQD)
1548 card->info.is_multicast_different = 0x0103;
1549 qeth_update_from_chp_desc(card);
1552 static int qeth_clear_channel(struct qeth_channel *channel)
1554 unsigned long flags;
1555 struct qeth_card *card;
1558 card = CARD_FROM_CDEV(channel->ccwdev);
1559 QETH_CARD_TEXT(card, 3, "clearch");
1560 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1561 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1562 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1566 rc = wait_event_interruptible_timeout(card->wait_q,
1567 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1568 if (rc == -ERESTARTSYS)
1570 if (channel->state != CH_STATE_STOPPED)
1572 channel->state = CH_STATE_DOWN;
1576 static int qeth_halt_channel(struct qeth_channel *channel)
1578 unsigned long flags;
1579 struct qeth_card *card;
1582 card = CARD_FROM_CDEV(channel->ccwdev);
1583 QETH_CARD_TEXT(card, 3, "haltch");
1584 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1585 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1586 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1590 rc = wait_event_interruptible_timeout(card->wait_q,
1591 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1592 if (rc == -ERESTARTSYS)
1594 if (channel->state != CH_STATE_HALTED)
1599 static int qeth_halt_channels(struct qeth_card *card)
1601 int rc1 = 0, rc2 = 0, rc3 = 0;
1603 QETH_CARD_TEXT(card, 3, "haltchs");
1604 rc1 = qeth_halt_channel(&card->read);
1605 rc2 = qeth_halt_channel(&card->write);
1606 rc3 = qeth_halt_channel(&card->data);
1614 static int qeth_clear_channels(struct qeth_card *card)
1616 int rc1 = 0, rc2 = 0, rc3 = 0;
1618 QETH_CARD_TEXT(card, 3, "clearchs");
1619 rc1 = qeth_clear_channel(&card->read);
1620 rc2 = qeth_clear_channel(&card->write);
1621 rc3 = qeth_clear_channel(&card->data);
1629 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1633 QETH_CARD_TEXT(card, 3, "clhacrd");
1636 rc = qeth_halt_channels(card);
1639 return qeth_clear_channels(card);
1642 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1646 QETH_CARD_TEXT(card, 3, "qdioclr");
1647 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1648 QETH_QDIO_CLEANING)) {
1649 case QETH_QDIO_ESTABLISHED:
1650 if (card->info.type == QETH_CARD_TYPE_IQD)
1651 rc = qdio_shutdown(CARD_DDEV(card),
1652 QDIO_FLAG_CLEANUP_USING_HALT);
1654 rc = qdio_shutdown(CARD_DDEV(card),
1655 QDIO_FLAG_CLEANUP_USING_CLEAR);
1657 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1658 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1660 case QETH_QDIO_CLEANING:
1665 rc = qeth_clear_halt_card(card, use_halt);
1667 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1668 card->state = CARD_STATE_DOWN;
1671 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1673 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1679 struct qeth_channel *channel = &card->data;
1680 unsigned long flags;
1683 * scan for RCD command in extended SenseID data
1685 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1686 if (!ciw || ciw->cmd == 0)
1688 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1692 channel->ccw.cmd_code = ciw->cmd;
1693 channel->ccw.cda = (__u32) __pa(rcd_buf);
1694 channel->ccw.count = ciw->count;
1695 channel->ccw.flags = CCW_FLAG_SLI;
1696 channel->state = CH_STATE_RCD;
1697 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1698 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1699 QETH_RCD_PARM, LPM_ANYPATH, 0,
1701 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1703 wait_event(card->wait_q,
1704 (channel->state == CH_STATE_RCD_DONE ||
1705 channel->state == CH_STATE_DOWN));
1706 if (channel->state == CH_STATE_DOWN)
1709 channel->state = CH_STATE_DOWN;
1715 *length = ciw->count;
1721 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1723 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1724 card->info.chpid = prcd[30];
1725 card->info.unit_addr2 = prcd[31];
1726 card->info.cula = prcd[63];
1727 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1728 (prcd[0x11] == _ascebc['M']));
1731 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1733 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1734 struct diag26c_vnic_resp *response = NULL;
1735 struct diag26c_vnic_req *request = NULL;
1736 struct ccw_dev_id id;
1740 QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1742 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1746 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1747 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1748 if (!request || !response) {
1753 ccw_device_get_id(CARD_RDEV(card), &id);
1754 request->resp_buf_len = sizeof(*response);
1755 request->resp_version = DIAG26C_VERSION6_VM65918;
1756 request->req_format = DIAG26C_VNIC_INFO;
1758 memcpy(&request->sys_name, userid, 8);
1759 request->devno = id.devno;
1761 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1762 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1763 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1766 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1768 if (request->resp_buf_len < sizeof(*response) ||
1769 response->version != request->resp_version) {
1774 if (response->protocol == VNIC_INFO_PROT_L2)
1775 disc = QETH_DISCIPLINE_LAYER2;
1776 else if (response->protocol == VNIC_INFO_PROT_L3)
1777 disc = QETH_DISCIPLINE_LAYER3;
1783 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1787 /* Determine whether the device requires a specific layer discipline */
1788 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1790 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1792 if (card->info.type == QETH_CARD_TYPE_OSM ||
1793 card->info.type == QETH_CARD_TYPE_OSN)
1794 disc = QETH_DISCIPLINE_LAYER2;
1795 else if (card->info.guestlan)
1796 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1797 QETH_DISCIPLINE_LAYER3 :
1798 qeth_vm_detect_layer(card);
1801 case QETH_DISCIPLINE_LAYER2:
1802 QETH_DBF_TEXT(SETUP, 3, "force l2");
1804 case QETH_DISCIPLINE_LAYER3:
1805 QETH_DBF_TEXT(SETUP, 3, "force l3");
1808 QETH_DBF_TEXT(SETUP, 3, "force no");
1814 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1816 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1818 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1819 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1820 card->info.blkt.time_total = 0;
1821 card->info.blkt.inter_packet = 0;
1822 card->info.blkt.inter_packet_jumbo = 0;
1824 card->info.blkt.time_total = 250;
1825 card->info.blkt.inter_packet = 5;
1826 card->info.blkt.inter_packet_jumbo = 15;
1830 static void qeth_init_tokens(struct qeth_card *card)
1832 card->token.issuer_rm_w = 0x00010103UL;
1833 card->token.cm_filter_w = 0x00010108UL;
1834 card->token.cm_connection_w = 0x0001010aUL;
1835 card->token.ulp_filter_w = 0x0001010bUL;
1836 card->token.ulp_connection_w = 0x0001010dUL;
1839 static void qeth_init_func_level(struct qeth_card *card)
1841 switch (card->info.type) {
1842 case QETH_CARD_TYPE_IQD:
1843 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1845 case QETH_CARD_TYPE_OSD:
1846 case QETH_CARD_TYPE_OSN:
1847 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1854 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1855 void (*idx_reply_cb)(struct qeth_channel *,
1856 struct qeth_cmd_buffer *))
1858 struct qeth_cmd_buffer *iob;
1859 unsigned long flags;
1861 struct qeth_card *card;
1863 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1864 card = CARD_FROM_CDEV(channel->ccwdev);
1865 iob = qeth_get_buffer(channel);
1868 iob->callback = idx_reply_cb;
1869 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1870 channel->ccw.count = QETH_BUFSIZE;
1871 channel->ccw.cda = (__u32) __pa(iob->data);
1873 wait_event(card->wait_q,
1874 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1875 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1876 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1877 rc = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1878 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1879 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1882 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1883 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1884 atomic_set(&channel->irq_pending, 0);
1885 wake_up(&card->wait_q);
1888 rc = wait_event_interruptible_timeout(card->wait_q,
1889 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1890 if (rc == -ERESTARTSYS)
1892 if (channel->state != CH_STATE_UP) {
1894 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1900 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1901 void (*idx_reply_cb)(struct qeth_channel *,
1902 struct qeth_cmd_buffer *))
1904 struct qeth_card *card;
1905 struct qeth_cmd_buffer *iob;
1906 unsigned long flags;
1910 struct ccw_dev_id temp_devid;
1912 card = CARD_FROM_CDEV(channel->ccwdev);
1914 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1916 iob = qeth_get_buffer(channel);
1919 iob->callback = idx_reply_cb;
1920 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1921 channel->ccw.count = IDX_ACTIVATE_SIZE;
1922 channel->ccw.cda = (__u32) __pa(iob->data);
1923 if (channel == &card->write) {
1924 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1925 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1926 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1927 card->seqno.trans_hdr++;
1929 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1930 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1931 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1933 tmp = ((__u8)card->info.portno) | 0x80;
1934 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1935 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1936 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1937 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1938 &card->info.func_level, sizeof(__u16));
1939 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1940 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1941 temp = (card->info.cula << 8) + card->info.unit_addr2;
1942 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1944 wait_event(card->wait_q,
1945 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1946 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1947 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1948 rc = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1949 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1950 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1953 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1956 atomic_set(&channel->irq_pending, 0);
1957 wake_up(&card->wait_q);
1960 rc = wait_event_interruptible_timeout(card->wait_q,
1961 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1962 if (rc == -ERESTARTSYS)
1964 if (channel->state != CH_STATE_ACTIVATING) {
1965 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1966 " failed to recover an error on the device\n");
1967 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1968 dev_name(&channel->ccwdev->dev));
1969 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1972 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1975 static int qeth_peer_func_level(int level)
1977 if ((level & 0xff) == 8)
1978 return (level & 0xff) + 0x400;
1979 if (((level >> 8) & 3) == 1)
1980 return (level & 0xff) + 0x200;
1984 static void qeth_idx_write_cb(struct qeth_channel *channel,
1985 struct qeth_cmd_buffer *iob)
1987 struct qeth_card *card;
1990 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1992 if (channel->state == CH_STATE_DOWN) {
1993 channel->state = CH_STATE_ACTIVATING;
1996 card = CARD_FROM_CDEV(channel->ccwdev);
1998 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1999 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
2000 dev_err(&card->write.ccwdev->dev,
2001 "The adapter is used exclusively by another "
2004 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
2005 " negative reply\n",
2006 dev_name(&card->write.ccwdev->dev));
2009 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2010 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
2011 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
2012 "function level mismatch (sent: 0x%x, received: "
2013 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
2014 card->info.func_level, temp);
2017 channel->state = CH_STATE_UP;
2019 qeth_release_buffer(channel, iob);
2022 static void qeth_idx_read_cb(struct qeth_channel *channel,
2023 struct qeth_cmd_buffer *iob)
2025 struct qeth_card *card;
2028 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
2029 if (channel->state == CH_STATE_DOWN) {
2030 channel->state = CH_STATE_ACTIVATING;
2034 card = CARD_FROM_CDEV(channel->ccwdev);
2035 if (qeth_check_idx_response(card, iob->data))
2038 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
2039 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2040 case QETH_IDX_ACT_ERR_EXCL:
2041 dev_err(&card->write.ccwdev->dev,
2042 "The adapter is used exclusively by another "
2045 case QETH_IDX_ACT_ERR_AUTH:
2046 case QETH_IDX_ACT_ERR_AUTH_USER:
2047 dev_err(&card->read.ccwdev->dev,
2048 "Setting the device online failed because of "
2049 "insufficient authorization\n");
2052 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2053 " negative reply\n",
2054 dev_name(&card->read.ccwdev->dev));
2056 QETH_CARD_TEXT_(card, 2, "idxread%c",
2057 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2061 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2062 if (temp != qeth_peer_func_level(card->info.func_level)) {
2063 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2064 "level mismatch (sent: 0x%x, received: 0x%x)\n",
2065 dev_name(&card->read.ccwdev->dev),
2066 card->info.func_level, temp);
2069 memcpy(&card->token.issuer_rm_r,
2070 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2071 QETH_MPC_TOKEN_LENGTH);
2072 memcpy(&card->info.mcl_level[0],
2073 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2074 channel->state = CH_STATE_UP;
2076 qeth_release_buffer(channel, iob);
2079 void qeth_prepare_control_data(struct qeth_card *card, int len,
2080 struct qeth_cmd_buffer *iob)
2082 qeth_setup_ccw(&card->write, iob->data, len);
2083 iob->callback = qeth_release_buffer;
2085 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2086 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2087 card->seqno.trans_hdr++;
2088 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2089 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2090 card->seqno.pdu_hdr++;
2091 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2092 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2093 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2095 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2098 * qeth_send_control_data() - send control command to the card
2099 * @card: qeth_card structure pointer
2100 * @len: size of the command buffer
2101 * @iob: qeth_cmd_buffer pointer
2102 * @reply_cb: callback function pointer
2103 * @cb_card: pointer to the qeth_card structure
2104 * @cb_reply: pointer to the qeth_reply structure
2105 * @cb_cmd: pointer to the original iob for non-IPA
2106 * commands, or to the qeth_ipa_cmd structure
2107 * for the IPA commands.
2108 * @reply_param: private pointer passed to the callback
2110 * Returns the value of the `return_code' field of the response
2111 * block returned from the hardware, or other error indication.
2112 * Value of zero indicates successful execution of the command.
2114 * Callback function gets called one or more times, with cb_cmd
2115 * pointing to the response returned by the hardware. Callback
2116 * function must return non-zero if more reply blocks are expected,
2117 * and zero if the last or only reply block is received. Callback
2118 * function can get the value of the reply_param pointer from the
2119 * field 'param' of the structure qeth_reply.
2122 int qeth_send_control_data(struct qeth_card *card, int len,
2123 struct qeth_cmd_buffer *iob,
2124 int (*reply_cb)(struct qeth_card *cb_card,
2125 struct qeth_reply *cb_reply,
2126 unsigned long cb_cmd),
2130 unsigned long flags;
2131 struct qeth_reply *reply = NULL;
2132 unsigned long timeout, event_timeout;
2133 struct qeth_ipa_cmd *cmd = NULL;
2135 QETH_CARD_TEXT(card, 2, "sendctl");
2137 if (card->read_or_write_problem) {
2138 qeth_release_buffer(iob->channel, iob);
2141 reply = qeth_alloc_reply(card);
2145 reply->callback = reply_cb;
2146 reply->param = reply_param;
2148 init_waitqueue_head(&reply->wait_q);
2150 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2152 if (IS_IPA(iob->data)) {
2153 cmd = __ipa_cmd(iob);
2154 cmd->hdr.seqno = card->seqno.ipa++;
2155 reply->seqno = cmd->hdr.seqno;
2156 event_timeout = QETH_IPA_TIMEOUT;
2158 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2159 event_timeout = QETH_TIMEOUT;
2161 qeth_prepare_control_data(card, len, iob);
2163 spin_lock_irqsave(&card->lock, flags);
2164 list_add_tail(&reply->list, &card->cmd_waiter_list);
2165 spin_unlock_irqrestore(&card->lock, flags);
2167 timeout = jiffies + event_timeout;
2169 QETH_CARD_TEXT(card, 6, "noirqpnd");
2170 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2171 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw,
2172 (addr_t) iob, 0, 0, event_timeout);
2173 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2175 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2176 "ccw_device_start rc = %i\n",
2177 dev_name(&card->write.ccwdev->dev), rc);
2178 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2179 spin_lock_irqsave(&card->lock, flags);
2180 list_del_init(&reply->list);
2181 qeth_put_reply(reply);
2182 spin_unlock_irqrestore(&card->lock, flags);
2183 qeth_release_buffer(iob->channel, iob);
2184 atomic_set(&card->write.irq_pending, 0);
2185 wake_up(&card->wait_q);
2189 /* we have only one long running ipassist, since we can ensure
2190 process context of this command we can sleep */
2191 if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2192 cmd->hdr.prot_version == QETH_PROT_IPV4) {
2193 if (!wait_event_timeout(reply->wait_q,
2194 atomic_read(&reply->received), event_timeout))
2197 while (!atomic_read(&reply->received)) {
2198 if (time_after(jiffies, timeout))
2205 qeth_put_reply(reply);
2210 spin_lock_irqsave(&reply->card->lock, flags);
2211 list_del_init(&reply->list);
2212 spin_unlock_irqrestore(&reply->card->lock, flags);
2213 atomic_inc(&reply->received);
2215 qeth_put_reply(reply);
2218 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2220 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2223 struct qeth_cmd_buffer *iob;
2225 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2227 iob = (struct qeth_cmd_buffer *) data;
2228 memcpy(&card->token.cm_filter_r,
2229 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2230 QETH_MPC_TOKEN_LENGTH);
2231 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2235 static int qeth_cm_enable(struct qeth_card *card)
2238 struct qeth_cmd_buffer *iob;
2240 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2242 iob = qeth_wait_for_buffer(&card->write);
2243 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2244 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2245 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2246 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2247 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2249 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2250 qeth_cm_enable_cb, NULL);
2254 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2258 struct qeth_cmd_buffer *iob;
2260 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2262 iob = (struct qeth_cmd_buffer *) data;
2263 memcpy(&card->token.cm_connection_r,
2264 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2265 QETH_MPC_TOKEN_LENGTH);
2266 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2270 static int qeth_cm_setup(struct qeth_card *card)
2273 struct qeth_cmd_buffer *iob;
2275 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2277 iob = qeth_wait_for_buffer(&card->write);
2278 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2279 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2280 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2281 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2282 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2283 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2284 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2285 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2286 qeth_cm_setup_cb, NULL);
2291 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2293 switch (card->info.type) {
2294 case QETH_CARD_TYPE_IQD:
2295 return card->info.max_mtu;
2296 case QETH_CARD_TYPE_OSD:
2297 case QETH_CARD_TYPE_OSX:
2298 if (!card->options.layer2)
2299 return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */
2302 return ETH_DATA_LEN;
2306 static int qeth_get_mtu_outof_framesize(int framesize)
2308 switch (framesize) {
2322 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2324 switch (card->info.type) {
2325 case QETH_CARD_TYPE_OSD:
2326 case QETH_CARD_TYPE_OSM:
2327 case QETH_CARD_TYPE_OSX:
2328 case QETH_CARD_TYPE_IQD:
2329 return ((mtu >= 576) &&
2330 (mtu <= card->info.max_mtu));
2331 case QETH_CARD_TYPE_OSN:
2337 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2341 __u16 mtu, framesize;
2344 struct qeth_cmd_buffer *iob;
2346 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2348 iob = (struct qeth_cmd_buffer *) data;
2349 memcpy(&card->token.ulp_filter_r,
2350 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2351 QETH_MPC_TOKEN_LENGTH);
2352 if (card->info.type == QETH_CARD_TYPE_IQD) {
2353 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2354 mtu = qeth_get_mtu_outof_framesize(framesize);
2357 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2360 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2361 /* frame size has changed */
2363 ((card->dev->mtu == card->info.initial_mtu) ||
2364 (card->dev->mtu > mtu)))
2365 card->dev->mtu = mtu;
2366 qeth_free_qdio_buffers(card);
2368 card->info.initial_mtu = mtu;
2369 card->info.max_mtu = mtu;
2370 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2372 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2374 card->info.initial_mtu = min(card->info.max_mtu,
2375 qeth_get_initial_mtu_for_card(card));
2376 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2379 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2380 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2382 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2383 card->info.link_type = link_type;
2385 card->info.link_type = 0;
2386 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2387 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2391 static int qeth_ulp_enable(struct qeth_card *card)
2395 struct qeth_cmd_buffer *iob;
2397 /*FIXME: trace view callbacks*/
2398 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2400 iob = qeth_wait_for_buffer(&card->write);
2401 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2403 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2404 (__u8) card->info.portno;
2405 if (card->options.layer2)
2406 if (card->info.type == QETH_CARD_TYPE_OSN)
2407 prot_type = QETH_PROT_OSN2;
2409 prot_type = QETH_PROT_LAYER2;
2411 prot_type = QETH_PROT_TCPIP;
2413 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2414 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2415 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2416 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2417 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2418 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2419 qeth_ulp_enable_cb, NULL);
2424 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2427 struct qeth_cmd_buffer *iob;
2429 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2431 iob = (struct qeth_cmd_buffer *) data;
2432 memcpy(&card->token.ulp_connection_r,
2433 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2434 QETH_MPC_TOKEN_LENGTH);
2435 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2437 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2438 dev_err(&card->gdev->dev, "A connection could not be "
2439 "established because of an OLM limit\n");
2442 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2446 static int qeth_ulp_setup(struct qeth_card *card)
2450 struct qeth_cmd_buffer *iob;
2451 struct ccw_dev_id dev_id;
2453 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2455 iob = qeth_wait_for_buffer(&card->write);
2456 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2458 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2459 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2460 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2461 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2462 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2463 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2465 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2466 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2467 temp = (card->info.cula << 8) + card->info.unit_addr2;
2468 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2469 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2470 qeth_ulp_setup_cb, NULL);
2474 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2477 struct qeth_qdio_out_buffer *newbuf;
2480 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2485 newbuf->buffer = q->qdio_bufs[bidx];
2486 skb_queue_head_init(&newbuf->skb_list);
2487 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2490 newbuf->next_pending = q->bufs[bidx];
2491 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2492 q->bufs[bidx] = newbuf;
2494 q->bufstates[bidx].user = newbuf;
2495 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2496 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2497 QETH_CARD_TEXT_(q->card, 2, "%lx",
2498 (long) newbuf->next_pending);
2504 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2509 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2513 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2515 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2520 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2527 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2531 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2533 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2534 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2537 QETH_DBF_TEXT(SETUP, 2, "inq");
2538 card->qdio.in_q = qeth_alloc_qdio_queue();
2539 if (!card->qdio.in_q)
2542 /* inbound buffer pool */
2543 if (qeth_alloc_buffer_pool(card))
2548 kcalloc(card->qdio.no_out_queues,
2549 sizeof(struct qeth_qdio_out_q *),
2551 if (!card->qdio.out_qs)
2553 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2554 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2555 if (!card->qdio.out_qs[i])
2557 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2558 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2559 card->qdio.out_qs[i]->queue_no = i;
2560 /* give outbound qeth_qdio_buffers their qdio_buffers */
2561 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2562 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2563 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2564 goto out_freeoutqbufs;
2569 if (qeth_alloc_cq(card))
2577 kmem_cache_free(qeth_qdio_outbuf_cache,
2578 card->qdio.out_qs[i]->bufs[j]);
2579 card->qdio.out_qs[i]->bufs[j] = NULL;
2583 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2584 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2586 kfree(card->qdio.out_qs);
2587 card->qdio.out_qs = NULL;
2589 qeth_free_buffer_pool(card);
2591 qeth_free_qdio_queue(card->qdio.in_q);
2592 card->qdio.in_q = NULL;
2594 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2598 static void qeth_free_qdio_buffers(struct qeth_card *card)
2602 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2603 QETH_QDIO_UNINITIALIZED)
2607 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2608 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2609 if (card->qdio.in_q->bufs[j].rx_skb)
2610 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2612 qeth_free_qdio_queue(card->qdio.in_q);
2613 card->qdio.in_q = NULL;
2614 /* inbound buffer pool */
2615 qeth_free_buffer_pool(card);
2616 /* free outbound qdio_qs */
2617 if (card->qdio.out_qs) {
2618 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2619 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2620 qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2622 kfree(card->qdio.out_qs);
2623 card->qdio.out_qs = NULL;
2627 static void qeth_create_qib_param_field(struct qeth_card *card,
2631 param_field[0] = _ascebc['P'];
2632 param_field[1] = _ascebc['C'];
2633 param_field[2] = _ascebc['I'];
2634 param_field[3] = _ascebc['T'];
2635 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2636 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2637 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2640 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2643 param_field[16] = _ascebc['B'];
2644 param_field[17] = _ascebc['L'];
2645 param_field[18] = _ascebc['K'];
2646 param_field[19] = _ascebc['T'];
2647 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2648 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2649 *((unsigned int *) (¶m_field[28])) =
2650 card->info.blkt.inter_packet_jumbo;
2653 static int qeth_qdio_activate(struct qeth_card *card)
2655 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2656 return qdio_activate(CARD_DDEV(card));
2659 static int qeth_dm_act(struct qeth_card *card)
2662 struct qeth_cmd_buffer *iob;
2664 QETH_DBF_TEXT(SETUP, 2, "dmact");
2666 iob = qeth_wait_for_buffer(&card->write);
2667 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2669 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2670 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2671 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2672 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2673 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2677 static int qeth_mpc_initialize(struct qeth_card *card)
2681 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2683 rc = qeth_issue_next_read(card);
2685 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2688 rc = qeth_cm_enable(card);
2690 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2693 rc = qeth_cm_setup(card);
2695 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2698 rc = qeth_ulp_enable(card);
2700 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2703 rc = qeth_ulp_setup(card);
2705 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2708 rc = qeth_alloc_qdio_buffers(card);
2710 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2713 rc = qeth_qdio_establish(card);
2715 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2716 qeth_free_qdio_buffers(card);
2719 rc = qeth_qdio_activate(card);
2721 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2724 rc = qeth_dm_act(card);
2726 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2732 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2733 qdio_free(CARD_DDEV(card));
2737 void qeth_print_status_message(struct qeth_card *card)
2739 switch (card->info.type) {
2740 case QETH_CARD_TYPE_OSD:
2741 case QETH_CARD_TYPE_OSM:
2742 case QETH_CARD_TYPE_OSX:
2743 /* VM will use a non-zero first character
2744 * to indicate a HiperSockets like reporting
2745 * of the level OSA sets the first character to zero
2747 if (!card->info.mcl_level[0]) {
2748 sprintf(card->info.mcl_level, "%02x%02x",
2749 card->info.mcl_level[2],
2750 card->info.mcl_level[3]);
2754 case QETH_CARD_TYPE_IQD:
2755 if ((card->info.guestlan) ||
2756 (card->info.mcl_level[0] & 0x80)) {
2757 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2758 card->info.mcl_level[0]];
2759 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2760 card->info.mcl_level[1]];
2761 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2762 card->info.mcl_level[2]];
2763 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2764 card->info.mcl_level[3]];
2765 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2769 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2771 dev_info(&card->gdev->dev,
2772 "Device is a%s card%s%s%s\nwith link type %s.\n",
2773 qeth_get_cardname(card),
2774 (card->info.mcl_level[0]) ? " (level: " : "",
2775 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2776 (card->info.mcl_level[0]) ? ")" : "",
2777 qeth_get_cardname_short(card));
2779 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2781 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2783 struct qeth_buffer_pool_entry *entry;
2785 QETH_CARD_TEXT(card, 5, "inwrklst");
2787 list_for_each_entry(entry,
2788 &card->qdio.init_pool.entry_list, init_list) {
2789 qeth_put_buffer_pool_entry(card, entry);
2793 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2794 struct qeth_card *card)
2796 struct list_head *plh;
2797 struct qeth_buffer_pool_entry *entry;
2801 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2804 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2805 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2807 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2808 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2814 list_del_init(&entry->list);
2819 /* no free buffer in pool so take first one and swap pages */
2820 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2821 struct qeth_buffer_pool_entry, list);
2822 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2823 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2824 page = alloc_page(GFP_ATOMIC);
2828 free_page((unsigned long)entry->elements[i]);
2829 entry->elements[i] = page_address(page);
2830 if (card->options.performance_stats)
2831 card->perf_stats.sg_alloc_page_rx++;
2835 list_del_init(&entry->list);
2839 static int qeth_init_input_buffer(struct qeth_card *card,
2840 struct qeth_qdio_buffer *buf)
2842 struct qeth_buffer_pool_entry *pool_entry;
2845 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2846 buf->rx_skb = netdev_alloc_skb(card->dev,
2847 QETH_RX_PULL_LEN + ETH_HLEN);
2852 pool_entry = qeth_find_free_buffer_pool_entry(card);
2857 * since the buffer is accessed only from the input_tasklet
2858 * there shouldn't be a need to synchronize; also, since we use
2859 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2863 buf->pool_entry = pool_entry;
2864 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2865 buf->buffer->element[i].length = PAGE_SIZE;
2866 buf->buffer->element[i].addr = pool_entry->elements[i];
2867 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2868 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2870 buf->buffer->element[i].eflags = 0;
2871 buf->buffer->element[i].sflags = 0;
2876 int qeth_init_qdio_queues(struct qeth_card *card)
2881 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2884 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2885 memset(&card->rx, 0, sizeof(struct qeth_rx));
2886 qeth_initialize_working_pool_list(card);
2887 /*give only as many buffers to hardware as we have buffer pool entries*/
2888 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2889 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2890 card->qdio.in_q->next_buf_to_init =
2891 card->qdio.in_buf_pool.buf_count - 1;
2892 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2893 card->qdio.in_buf_pool.buf_count - 1);
2895 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2900 rc = qeth_cq_init(card);
2905 /* outbound queue */
2906 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2907 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2908 QDIO_MAX_BUFFERS_PER_Q);
2909 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2910 qeth_clear_output_buffer(card->qdio.out_qs[i],
2911 card->qdio.out_qs[i]->bufs[j],
2912 QETH_QDIO_BUF_EMPTY);
2914 card->qdio.out_qs[i]->card = card;
2915 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2916 card->qdio.out_qs[i]->do_pack = 0;
2917 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2918 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2919 atomic_set(&card->qdio.out_qs[i]->state,
2920 QETH_OUT_Q_UNLOCKED);
2924 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2926 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2928 switch (link_type) {
2929 case QETH_LINK_TYPE_HSTR:
2936 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2937 struct qeth_ipa_cmd *cmd, __u8 command,
2938 enum qeth_prot_versions prot)
2940 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2941 cmd->hdr.command = command;
2942 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2943 /* cmd->hdr.seqno is set by qeth_send_control_data() */
2944 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2945 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2946 if (card->options.layer2)
2947 cmd->hdr.prim_version_no = 2;
2949 cmd->hdr.prim_version_no = 1;
2950 cmd->hdr.param_count = 1;
2951 cmd->hdr.prot_version = prot;
2952 cmd->hdr.ipa_supported = 0;
2953 cmd->hdr.ipa_enabled = 0;
2956 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2957 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2959 struct qeth_cmd_buffer *iob;
2961 iob = qeth_get_buffer(&card->write);
2963 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2965 dev_warn(&card->gdev->dev,
2966 "The qeth driver ran out of channel command buffers\n");
2967 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2968 dev_name(&card->gdev->dev));
2973 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2975 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2978 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2979 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2980 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2981 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2983 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2986 * qeth_send_ipa_cmd() - send an IPA command
2988 * See qeth_send_control_data() for explanation of the arguments.
2991 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2992 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2999 QETH_CARD_TEXT(card, 4, "sendipa");
3001 if (card->options.layer2)
3002 if (card->info.type == QETH_CARD_TYPE_OSN)
3003 prot_type = QETH_PROT_OSN2;
3005 prot_type = QETH_PROT_LAYER2;
3007 prot_type = QETH_PROT_TCPIP;
3008 qeth_prepare_ipa_cmd(card, iob, prot_type);
3009 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
3010 iob, reply_cb, reply_param);
3012 qeth_clear_ipacmd_list(card);
3013 qeth_schedule_recovery(card);
3017 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3019 static int qeth_send_startlan(struct qeth_card *card)
3022 struct qeth_cmd_buffer *iob;
3024 QETH_DBF_TEXT(SETUP, 2, "strtlan");
3026 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
3029 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
3033 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3035 if (!cmd->hdr.return_code)
3036 cmd->hdr.return_code =
3037 cmd->data.setadapterparms.hdr.return_code;
3038 return cmd->hdr.return_code;
3041 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3042 struct qeth_reply *reply, unsigned long data)
3044 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3046 QETH_CARD_TEXT(card, 3, "quyadpcb");
3047 if (qeth_setadpparms_inspect_rc(cmd))
3050 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3051 card->info.link_type =
3052 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3053 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3055 card->options.adp.supported_funcs =
3056 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3060 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3061 __u32 command, __u32 cmdlen)
3063 struct qeth_cmd_buffer *iob;
3064 struct qeth_ipa_cmd *cmd;
3066 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3069 cmd = __ipa_cmd(iob);
3070 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3071 cmd->data.setadapterparms.hdr.command_code = command;
3072 cmd->data.setadapterparms.hdr.used_total = 1;
3073 cmd->data.setadapterparms.hdr.seq_no = 1;
3079 int qeth_query_setadapterparms(struct qeth_card *card)
3082 struct qeth_cmd_buffer *iob;
3084 QETH_CARD_TEXT(card, 3, "queryadp");
3085 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3086 sizeof(struct qeth_ipacmd_setadpparms));
3089 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3092 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3094 static int qeth_query_ipassists_cb(struct qeth_card *card,
3095 struct qeth_reply *reply, unsigned long data)
3097 struct qeth_ipa_cmd *cmd;
3099 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3101 cmd = (struct qeth_ipa_cmd *) data;
3103 switch (cmd->hdr.return_code) {
3104 case IPA_RC_NOTSUPP:
3105 case IPA_RC_L2_UNSUPPORTED_CMD:
3106 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3107 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3108 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3111 if (cmd->hdr.return_code) {
3112 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3114 dev_name(&card->gdev->dev),
3115 cmd->hdr.return_code);
3120 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3121 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3122 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3123 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3124 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3125 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3127 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3128 "\n", dev_name(&card->gdev->dev));
3132 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3135 struct qeth_cmd_buffer *iob;
3137 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3138 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3141 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3144 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3146 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3147 struct qeth_reply *reply, unsigned long data)
3149 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3150 struct qeth_query_switch_attributes *attrs;
3151 struct qeth_switch_info *sw_info;
3153 QETH_CARD_TEXT(card, 2, "qswiatcb");
3154 if (qeth_setadpparms_inspect_rc(cmd))
3157 sw_info = (struct qeth_switch_info *)reply->param;
3158 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3159 sw_info->capabilities = attrs->capabilities;
3160 sw_info->settings = attrs->settings;
3161 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3166 int qeth_query_switch_attributes(struct qeth_card *card,
3167 struct qeth_switch_info *sw_info)
3169 struct qeth_cmd_buffer *iob;
3171 QETH_CARD_TEXT(card, 2, "qswiattr");
3172 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3174 if (!netif_carrier_ok(card->dev))
3176 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3177 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3180 return qeth_send_ipa_cmd(card, iob,
3181 qeth_query_switch_attributes_cb, sw_info);
3183 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3185 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3186 struct qeth_reply *reply, unsigned long data)
3188 struct qeth_ipa_cmd *cmd;
3191 cmd = (struct qeth_ipa_cmd *)data;
3192 rc = cmd->hdr.return_code;
3194 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3196 card->info.diagass_support = cmd->data.diagass.ext;
3200 static int qeth_query_setdiagass(struct qeth_card *card)
3202 struct qeth_cmd_buffer *iob;
3203 struct qeth_ipa_cmd *cmd;
3205 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3206 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3209 cmd = __ipa_cmd(iob);
3210 cmd->data.diagass.subcmd_len = 16;
3211 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3212 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3215 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3217 unsigned long info = get_zeroed_page(GFP_KERNEL);
3218 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3219 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3220 struct ccw_dev_id ccwid;
3223 tid->chpid = card->info.chpid;
3224 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3225 tid->ssid = ccwid.ssid;
3226 tid->devno = ccwid.devno;
3229 level = stsi(NULL, 0, 0, 0);
3230 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3231 tid->lparnr = info222->lpar_number;
3232 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3233 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3234 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3240 static int qeth_hw_trap_cb(struct qeth_card *card,
3241 struct qeth_reply *reply, unsigned long data)
3243 struct qeth_ipa_cmd *cmd;
3246 cmd = (struct qeth_ipa_cmd *)data;
3247 rc = cmd->hdr.return_code;
3249 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3253 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3255 struct qeth_cmd_buffer *iob;
3256 struct qeth_ipa_cmd *cmd;
3258 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3259 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3262 cmd = __ipa_cmd(iob);
3263 cmd->data.diagass.subcmd_len = 80;
3264 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3265 cmd->data.diagass.type = 1;
3266 cmd->data.diagass.action = action;
3268 case QETH_DIAGS_TRAP_ARM:
3269 cmd->data.diagass.options = 0x0003;
3270 cmd->data.diagass.ext = 0x00010000 +
3271 sizeof(struct qeth_trap_id);
3272 qeth_get_trap_id(card,
3273 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3275 case QETH_DIAGS_TRAP_DISARM:
3276 cmd->data.diagass.options = 0x0001;
3278 case QETH_DIAGS_TRAP_CAPTURE:
3281 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3283 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3285 static int qeth_check_qdio_errors(struct qeth_card *card,
3286 struct qdio_buffer *buf,
3287 unsigned int qdio_error,
3288 const char *dbftext)
3291 QETH_CARD_TEXT(card, 2, dbftext);
3292 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3293 buf->element[15].sflags);
3294 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3295 buf->element[14].sflags);
3296 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3297 if ((buf->element[15].sflags) == 0x12) {
3298 card->stats.rx_dropped++;
3306 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3308 struct qeth_qdio_q *queue = card->qdio.in_q;
3309 struct list_head *lh;
3315 count = (index < queue->next_buf_to_init)?
3316 card->qdio.in_buf_pool.buf_count -
3317 (queue->next_buf_to_init - index) :
3318 card->qdio.in_buf_pool.buf_count -
3319 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3320 /* only requeue at a certain threshold to avoid SIGAs */
3321 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3322 for (i = queue->next_buf_to_init;
3323 i < queue->next_buf_to_init + count; ++i) {
3324 if (qeth_init_input_buffer(card,
3325 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3332 if (newcount < count) {
3333 /* we are in memory shortage so we switch back to
3334 traditional skb allocation and drop packages */
3335 atomic_set(&card->force_alloc_skb, 3);
3338 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3343 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3345 if (i == card->qdio.in_buf_pool.buf_count) {
3346 QETH_CARD_TEXT(card, 2, "qsarbw");
3347 card->reclaim_index = index;
3348 schedule_delayed_work(
3349 &card->buffer_reclaim_work,
3350 QETH_RECLAIM_WORK_TIME);
3356 * according to old code it should be avoided to requeue all
3357 * 128 buffers in order to benefit from PCI avoidance.
3358 * this function keeps at least one buffer (the buffer at
3359 * 'index') un-requeued -> this buffer is the first buffer that
3360 * will be requeued the next time
3362 if (card->options.performance_stats) {
3363 card->perf_stats.inbound_do_qdio_cnt++;
3364 card->perf_stats.inbound_do_qdio_start_time =
3367 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3368 queue->next_buf_to_init, count);
3369 if (card->options.performance_stats)
3370 card->perf_stats.inbound_do_qdio_time +=
3372 card->perf_stats.inbound_do_qdio_start_time;
3374 QETH_CARD_TEXT(card, 2, "qinberr");
3376 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3377 QDIO_MAX_BUFFERS_PER_Q;
3381 static void qeth_buffer_reclaim_work(struct work_struct *work)
3383 struct qeth_card *card = container_of(work, struct qeth_card,
3384 buffer_reclaim_work.work);
3386 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3387 qeth_queue_input_buffer(card, card->reclaim_index);
3390 static void qeth_handle_send_error(struct qeth_card *card,
3391 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3393 int sbalf15 = buffer->buffer->element[15].sflags;
3395 QETH_CARD_TEXT(card, 6, "hdsnderr");
3396 if (card->info.type == QETH_CARD_TYPE_IQD) {
3403 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3408 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3411 QETH_CARD_TEXT(card, 1, "lnkfail");
3412 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3413 (u16)qdio_err, (u8)sbalf15);
3417 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3418 * @queue: queue to check for packing buffer
3420 * Returns number of buffers that were prepared for flush.
3422 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3424 struct qeth_qdio_out_buffer *buffer;
3426 buffer = queue->bufs[queue->next_buf_to_fill];
3427 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3428 (buffer->next_element_to_fill > 0)) {
3429 /* it's a packing buffer */
3430 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3431 queue->next_buf_to_fill =
3432 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3439 * Switched to packing state if the number of used buffers on a queue
3440 * reaches a certain limit.
3442 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3444 if (!queue->do_pack) {
3445 if (atomic_read(&queue->used_buffers)
3446 >= QETH_HIGH_WATERMARK_PACK){
3447 /* switch non-PACKING -> PACKING */
3448 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3449 if (queue->card->options.performance_stats)
3450 queue->card->perf_stats.sc_dp_p++;
3457 * Switches from packing to non-packing mode. If there is a packing
3458 * buffer on the queue this buffer will be prepared to be flushed.
3459 * In that case 1 is returned to inform the caller. If no buffer
3460 * has to be flushed, zero is returned.
3462 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3464 if (queue->do_pack) {
3465 if (atomic_read(&queue->used_buffers)
3466 <= QETH_LOW_WATERMARK_PACK) {
3467 /* switch PACKING -> non-PACKING */
3468 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3469 if (queue->card->options.performance_stats)
3470 queue->card->perf_stats.sc_p_dp++;
3472 return qeth_prep_flush_pack_buffer(queue);
3478 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3481 struct qeth_qdio_out_buffer *buf;
3484 unsigned int qdio_flags;
3486 for (i = index; i < index + count; ++i) {
3487 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3488 buf = queue->bufs[bidx];
3489 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3490 SBAL_EFLAGS_LAST_ENTRY;
3492 if (queue->bufstates)
3493 queue->bufstates[bidx].user = buf;
3495 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3498 if (!queue->do_pack) {
3499 if ((atomic_read(&queue->used_buffers) >=
3500 (QETH_HIGH_WATERMARK_PACK -
3501 QETH_WATERMARK_PACK_FUZZ)) &&
3502 !atomic_read(&queue->set_pci_flags_count)) {
3503 /* it's likely that we'll go to packing
3505 atomic_inc(&queue->set_pci_flags_count);
3506 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3509 if (!atomic_read(&queue->set_pci_flags_count)) {
3511 * there's no outstanding PCI any more, so we
3512 * have to request a PCI to be sure the the PCI
3513 * will wake at some time in the future then we
3514 * can flush packed buffers that might still be
3515 * hanging around, which can happen if no
3516 * further send was requested by the stack
3518 atomic_inc(&queue->set_pci_flags_count);
3519 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3524 netif_trans_update(queue->card->dev);
3525 if (queue->card->options.performance_stats) {
3526 queue->card->perf_stats.outbound_do_qdio_cnt++;
3527 queue->card->perf_stats.outbound_do_qdio_start_time =
3530 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3531 if (atomic_read(&queue->set_pci_flags_count))
3532 qdio_flags |= QDIO_FLAG_PCI_OUT;
3533 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3534 queue->queue_no, index, count);
3535 if (queue->card->options.performance_stats)
3536 queue->card->perf_stats.outbound_do_qdio_time +=
3538 queue->card->perf_stats.outbound_do_qdio_start_time;
3539 atomic_add(count, &queue->used_buffers);
3541 queue->card->stats.tx_errors += count;
3542 /* ignore temporary SIGA errors without busy condition */
3545 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3546 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3547 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3548 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3549 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3551 /* this must not happen under normal circumstances. if it
3552 * happens something is really wrong -> recover */
3553 qeth_schedule_recovery(queue->card);
3556 if (queue->card->options.performance_stats)
3557 queue->card->perf_stats.bufs_sent += count;
3560 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3564 int q_was_packing = 0;
3567 * check if weed have to switch to non-packing mode or if
3568 * we have to get a pci flag out on the queue
3570 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3571 !atomic_read(&queue->set_pci_flags_count)) {
3572 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3573 QETH_OUT_Q_UNLOCKED) {
3575 * If we get in here, there was no action in
3576 * do_send_packet. So, we check if there is a
3577 * packing buffer to be flushed here.
3579 netif_stop_queue(queue->card->dev);
3580 index = queue->next_buf_to_fill;
3581 q_was_packing = queue->do_pack;
3582 /* queue->do_pack may change */
3584 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3586 !atomic_read(&queue->set_pci_flags_count))
3587 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3588 if (queue->card->options.performance_stats &&
3590 queue->card->perf_stats.bufs_sent_pack +=
3593 qeth_flush_buffers(queue, index, flush_cnt);
3594 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3599 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3600 unsigned long card_ptr)
3602 struct qeth_card *card = (struct qeth_card *)card_ptr;
3604 if (card->dev && (card->dev->flags & IFF_UP))
3605 napi_schedule(&card->napi);
3608 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3612 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3616 if (card->options.cq == cq) {
3621 if (card->state != CARD_STATE_DOWN &&
3622 card->state != CARD_STATE_RECOVER) {
3627 qeth_free_qdio_buffers(card);
3628 card->options.cq = cq;
3635 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3638 static void qeth_qdio_cq_handler(struct qeth_card *card,
3639 unsigned int qdio_err,
3640 unsigned int queue, int first_element, int count) {
3641 struct qeth_qdio_q *cq = card->qdio.c_q;
3645 if (!qeth_is_cq(card, queue))
3648 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3649 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3650 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3653 netif_stop_queue(card->dev);
3654 qeth_schedule_recovery(card);
3658 if (card->options.performance_stats) {
3659 card->perf_stats.cq_cnt++;
3660 card->perf_stats.cq_start_time = qeth_get_micros();
3663 for (i = first_element; i < first_element + count; ++i) {
3664 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3665 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3669 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3670 buffer->element[e].addr) {
3671 unsigned long phys_aob_addr;
3673 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3674 qeth_qdio_handle_aob(card, phys_aob_addr);
3675 buffer->element[e].addr = NULL;
3676 buffer->element[e].eflags = 0;
3677 buffer->element[e].sflags = 0;
3678 buffer->element[e].length = 0;
3683 buffer->element[15].eflags = 0;
3684 buffer->element[15].sflags = 0;
3686 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3687 card->qdio.c_q->next_buf_to_init,
3690 dev_warn(&card->gdev->dev,
3691 "QDIO reported an error, rc=%i\n", rc);
3692 QETH_CARD_TEXT(card, 2, "qcqherr");
3694 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3695 + count) % QDIO_MAX_BUFFERS_PER_Q;
3697 netif_wake_queue(card->dev);
3699 if (card->options.performance_stats) {
3700 int delta_t = qeth_get_micros();
3701 delta_t -= card->perf_stats.cq_start_time;
3702 card->perf_stats.cq_time += delta_t;
3708 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3709 unsigned int qdio_err, int queue,
3710 int first_elem, int count,
3711 unsigned long card_ptr)
3713 struct qeth_card *card = (struct qeth_card *)card_ptr;
3715 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3716 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3718 if (qeth_is_cq(card, queue))
3719 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3721 qeth_schedule_recovery(card);
3724 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3725 unsigned int qdio_error, int __queue,
3726 int first_element, int count,
3727 unsigned long card_ptr)
3729 struct qeth_card *card = (struct qeth_card *) card_ptr;
3730 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3731 struct qeth_qdio_out_buffer *buffer;
3734 QETH_CARD_TEXT(card, 6, "qdouhdl");
3735 if (qdio_error & QDIO_ERROR_FATAL) {
3736 QETH_CARD_TEXT(card, 2, "achkcond");
3737 netif_stop_queue(card->dev);
3738 qeth_schedule_recovery(card);
3741 if (card->options.performance_stats) {
3742 card->perf_stats.outbound_handler_cnt++;
3743 card->perf_stats.outbound_handler_start_time =
3746 for (i = first_element; i < (first_element + count); ++i) {
3747 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3748 buffer = queue->bufs[bidx];
3749 qeth_handle_send_error(card, buffer, qdio_error);
3751 if (queue->bufstates &&
3752 (queue->bufstates[bidx].flags &
3753 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3754 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3756 if (atomic_cmpxchg(&buffer->state,
3757 QETH_QDIO_BUF_PRIMED,
3758 QETH_QDIO_BUF_PENDING) ==
3759 QETH_QDIO_BUF_PRIMED) {
3760 qeth_notify_skbs(queue, buffer,
3763 buffer->aob = queue->bufstates[bidx].aob;
3764 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3765 QETH_CARD_TEXT(queue->card, 5, "aob");
3766 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3767 virt_to_phys(buffer->aob));
3769 /* prepare the queue slot for re-use: */
3770 qeth_scrub_qdio_buffer(buffer->buffer,
3771 QETH_MAX_BUFFER_ELEMENTS(card));
3772 if (qeth_init_qdio_out_buf(queue, bidx)) {
3773 QETH_CARD_TEXT(card, 2, "outofbuf");
3774 qeth_schedule_recovery(card);
3777 if (card->options.cq == QETH_CQ_ENABLED) {
3778 enum iucv_tx_notify n;
3780 n = qeth_compute_cq_notification(
3781 buffer->buffer->element[15].sflags, 0);
3782 qeth_notify_skbs(queue, buffer, n);
3785 qeth_clear_output_buffer(queue, buffer,
3786 QETH_QDIO_BUF_EMPTY);
3788 qeth_cleanup_handled_pending(queue, bidx, 0);
3790 atomic_sub(count, &queue->used_buffers);
3791 /* check if we need to do something on this outbound queue */
3792 if (card->info.type != QETH_CARD_TYPE_IQD)
3793 qeth_check_outbound_queue(queue);
3795 netif_wake_queue(queue->card->dev);
3796 if (card->options.performance_stats)
3797 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3798 card->perf_stats.outbound_handler_start_time;
3801 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3802 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3804 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3810 * Note: Function assumes that we have 4 outbound queues.
3812 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3813 int ipv, int cast_type)
3818 if (cast_type && card->info.is_multicast_different)
3819 return card->info.is_multicast_different &
3820 (card->qdio.no_out_queues - 1);
3822 switch (card->qdio.do_prio_queueing) {
3823 case QETH_PRIO_Q_ING_TOS:
3824 case QETH_PRIO_Q_ING_PREC:
3827 tos = ipv4_get_dsfield(ip_hdr(skb));
3830 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3833 return card->qdio.default_out_queue;
3835 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3836 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3837 if (tos & IPTOS_MINCOST)
3838 return qeth_cut_iqd_prio(card, 3);
3839 if (tos & IPTOS_RELIABILITY)
3841 if (tos & IPTOS_THROUGHPUT)
3843 if (tos & IPTOS_LOWDELAY)
3846 case QETH_PRIO_Q_ING_SKB:
3847 if (skb->priority > 5)
3849 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3850 case QETH_PRIO_Q_ING_VLAN:
3851 tci = &((struct ethhdr *)skb->data)->h_proto;
3852 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3853 return qeth_cut_iqd_prio(card,
3854 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3859 return card->qdio.default_out_queue;
3861 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3864 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3867 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3868 * fragmented part of the SKB. Returns zero for linear SKB.
3870 int qeth_get_elements_for_frags(struct sk_buff *skb)
3872 int cnt, elements = 0;
3874 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3875 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3877 elements += qeth_get_elements_for_range(
3878 (addr_t)skb_frag_address(frag),
3879 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3883 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3886 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3887 * @card: qeth card structure, to check max. elems.
3889 * @extra_elems: extra elems needed, to check against max.
3890 * @data_offset: range starts at skb->data + data_offset
3892 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3893 * skb data, including linear part and fragments. Checks if the result plus
3894 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3895 * Note: extra_elems is not included in the returned result.
3897 int qeth_get_elements_no(struct qeth_card *card,
3898 struct sk_buff *skb, int extra_elems, int data_offset)
3900 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3901 int elements = qeth_get_elements_for_frags(skb);
3902 addr_t start = (addr_t)skb->data + data_offset;
3905 elements += qeth_get_elements_for_range(start, end);
3907 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3908 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3909 "(Number=%d / Length=%d). Discarded.\n",
3910 elements + extra_elems, skb->len);
3915 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3917 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3919 int hroom, inpage, rest;
3921 if (((unsigned long)skb->data & PAGE_MASK) !=
3922 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3923 hroom = skb_headroom(skb);
3924 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3925 rest = len - inpage;
3928 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3931 *hdr = (struct qeth_hdr *)skb->data;
3932 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3936 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3939 * qeth_push_hdr() - push a qeth_hdr onto an skb.
3940 * @skb: skb that the qeth_hdr should be pushed onto.
3941 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3942 * it contains a valid pointer to a qeth_hdr.
3943 * @len: length of the hdr that needs to be pushed on.
3945 * Returns the pushed length. If the header can't be pushed on
3946 * (eg. because it would cross a page boundary), it is allocated from
3947 * the cache instead and 0 is returned.
3948 * Error to create the hdr is indicated by returning with < 0.
3950 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3952 if (skb_headroom(skb) >= len &&
3953 qeth_get_elements_for_range((addr_t)skb->data - len,
3954 (addr_t)skb->data) == 1) {
3955 *hdr = skb_push(skb, len);
3959 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3964 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3966 static void __qeth_fill_buffer(struct sk_buff *skb,
3967 struct qeth_qdio_out_buffer *buf,
3968 bool is_first_elem, unsigned int offset)
3970 struct qdio_buffer *buffer = buf->buffer;
3971 int element = buf->next_element_to_fill;
3972 int length = skb_headlen(skb) - offset;
3973 char *data = skb->data + offset;
3974 int length_here, cnt;
3976 /* map linear part into buffer element(s) */
3977 while (length > 0) {
3978 /* length_here is the remaining amount of data in this page */
3979 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3980 if (length < length_here)
3981 length_here = length;
3983 buffer->element[element].addr = data;
3984 buffer->element[element].length = length_here;
3985 length -= length_here;
3986 if (is_first_elem) {
3987 is_first_elem = false;
3988 if (length || skb_is_nonlinear(skb))
3989 /* skb needs additional elements */
3990 buffer->element[element].eflags =
3991 SBAL_EFLAGS_FIRST_FRAG;
3993 buffer->element[element].eflags = 0;
3995 buffer->element[element].eflags =
3996 SBAL_EFLAGS_MIDDLE_FRAG;
3998 data += length_here;
4002 /* map page frags into buffer element(s) */
4003 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4004 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4006 data = skb_frag_address(frag);
4007 length = skb_frag_size(frag);
4008 while (length > 0) {
4009 length_here = PAGE_SIZE -
4010 ((unsigned long) data % PAGE_SIZE);
4011 if (length < length_here)
4012 length_here = length;
4014 buffer->element[element].addr = data;
4015 buffer->element[element].length = length_here;
4016 buffer->element[element].eflags =
4017 SBAL_EFLAGS_MIDDLE_FRAG;
4018 length -= length_here;
4019 data += length_here;
4024 if (buffer->element[element - 1].eflags)
4025 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4026 buf->next_element_to_fill = element;
4030 * qeth_fill_buffer() - map skb into an output buffer
4031 * @queue: QDIO queue to submit the buffer on
4032 * @buf: buffer to transport the skb
4033 * @skb: skb to map into the buffer
4034 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4035 * from qeth_core_header_cache.
4036 * @offset: when mapping the skb, start at skb->data + offset
4037 * @hd_len: if > 0, build a dedicated header element of this size
4039 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4040 struct qeth_qdio_out_buffer *buf,
4041 struct sk_buff *skb, struct qeth_hdr *hdr,
4042 unsigned int offset, unsigned int hd_len)
4044 struct qdio_buffer *buffer = buf->buffer;
4045 bool is_first_elem = true;
4048 refcount_inc(&skb->users);
4049 skb_queue_tail(&buf->skb_list, skb);
4051 /* build dedicated header element */
4053 int element = buf->next_element_to_fill;
4054 is_first_elem = false;
4056 buffer->element[element].addr = hdr;
4057 buffer->element[element].length = hd_len;
4058 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4059 /* remember to free cache-allocated qeth_hdr: */
4060 buf->is_header[element] = ((void *)hdr != skb->data);
4061 buf->next_element_to_fill++;
4064 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4066 if (!queue->do_pack) {
4067 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4068 /* set state to PRIMED -> will be flushed */
4069 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4072 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4073 if (queue->card->options.performance_stats)
4074 queue->card->perf_stats.skbs_sent_pack++;
4075 if (buf->next_element_to_fill >=
4076 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4078 * packed buffer if full -> set state PRIMED
4079 * -> will be flushed
4081 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4088 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4089 struct qeth_hdr *hdr, unsigned int offset,
4090 unsigned int hd_len)
4092 int index = queue->next_buf_to_fill;
4093 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4096 * check if buffer is empty to make sure that we do not 'overtake'
4097 * ourselves and try to fill a buffer that is already primed
4099 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4101 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4102 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4103 qeth_flush_buffers(queue, index, 1);
4106 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4108 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4109 struct sk_buff *skb, struct qeth_hdr *hdr,
4110 unsigned int offset, unsigned int hd_len,
4111 int elements_needed)
4113 struct qeth_qdio_out_buffer *buffer;
4115 int flush_count = 0;
4120 /* spin until we get the queue ... */
4121 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4122 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4123 start_index = queue->next_buf_to_fill;
4124 buffer = queue->bufs[queue->next_buf_to_fill];
4126 * check if buffer is empty to make sure that we do not 'overtake'
4127 * ourselves and try to fill a buffer that is already primed
4129 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4130 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4133 /* check if we need to switch packing state of this queue */
4134 qeth_switch_to_packing_if_needed(queue);
4135 if (queue->do_pack) {
4137 /* does packet fit in current buffer? */
4138 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4139 buffer->next_element_to_fill) < elements_needed) {
4140 /* ... no -> set state PRIMED */
4141 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4143 queue->next_buf_to_fill =
4144 (queue->next_buf_to_fill + 1) %
4145 QDIO_MAX_BUFFERS_PER_Q;
4146 buffer = queue->bufs[queue->next_buf_to_fill];
4147 /* we did a step forward, so check buffer state
4149 if (atomic_read(&buffer->state) !=
4150 QETH_QDIO_BUF_EMPTY) {
4151 qeth_flush_buffers(queue, start_index,
4153 atomic_set(&queue->state,
4154 QETH_OUT_Q_UNLOCKED);
4160 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4161 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4162 QDIO_MAX_BUFFERS_PER_Q;
4165 qeth_flush_buffers(queue, start_index, flush_count);
4166 else if (!atomic_read(&queue->set_pci_flags_count))
4167 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4169 * queue->state will go from LOCKED -> UNLOCKED or from
4170 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4171 * (switch packing state or flush buffer to get another pci flag out).
4172 * In that case we will enter this loop
4174 while (atomic_dec_return(&queue->state)) {
4175 start_index = queue->next_buf_to_fill;
4176 /* check if we can go back to non-packing state */
4177 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4179 * check if we need to flush a packing buffer to get a pci
4180 * flag out on the queue
4182 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4183 tmp = qeth_prep_flush_pack_buffer(queue);
4185 qeth_flush_buffers(queue, start_index, tmp);
4190 /* at this point the queue is UNLOCKED again */
4191 if (queue->card->options.performance_stats && do_pack)
4192 queue->card->perf_stats.bufs_sent_pack += flush_count;
4196 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4198 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4199 struct qeth_reply *reply, unsigned long data)
4201 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4202 struct qeth_ipacmd_setadpparms *setparms;
4204 QETH_CARD_TEXT(card, 4, "prmadpcb");
4206 setparms = &(cmd->data.setadapterparms);
4207 if (qeth_setadpparms_inspect_rc(cmd)) {
4208 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4209 setparms->data.mode = SET_PROMISC_MODE_OFF;
4211 card->info.promisc_mode = setparms->data.mode;
4215 void qeth_setadp_promisc_mode(struct qeth_card *card)
4217 enum qeth_ipa_promisc_modes mode;
4218 struct net_device *dev = card->dev;
4219 struct qeth_cmd_buffer *iob;
4220 struct qeth_ipa_cmd *cmd;
4222 QETH_CARD_TEXT(card, 4, "setprom");
4224 if (((dev->flags & IFF_PROMISC) &&
4225 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4226 (!(dev->flags & IFF_PROMISC) &&
4227 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4229 mode = SET_PROMISC_MODE_OFF;
4230 if (dev->flags & IFF_PROMISC)
4231 mode = SET_PROMISC_MODE_ON;
4232 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4234 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4235 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4238 cmd = __ipa_cmd(iob);
4239 cmd->data.setadapterparms.data.mode = mode;
4240 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4242 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4244 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4246 struct qeth_card *card;
4249 card = dev->ml_priv;
4251 QETH_CARD_TEXT(card, 4, "chgmtu");
4252 sprintf(dbf_text, "%8x", new_mtu);
4253 QETH_CARD_TEXT(card, 4, dbf_text);
4255 if (!qeth_mtu_is_valid(card, new_mtu))
4260 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4262 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4264 struct qeth_card *card;
4266 card = dev->ml_priv;
4268 QETH_CARD_TEXT(card, 5, "getstat");
4270 return &card->stats;
4272 EXPORT_SYMBOL_GPL(qeth_get_stats);
4274 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4275 struct qeth_reply *reply, unsigned long data)
4277 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4279 QETH_CARD_TEXT(card, 4, "chgmaccb");
4280 if (qeth_setadpparms_inspect_rc(cmd))
4283 if (!card->options.layer2 ||
4284 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4285 ether_addr_copy(card->dev->dev_addr,
4286 cmd->data.setadapterparms.data.change_addr.addr);
4287 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4292 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4295 struct qeth_cmd_buffer *iob;
4296 struct qeth_ipa_cmd *cmd;
4298 QETH_CARD_TEXT(card, 4, "chgmac");
4300 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4301 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4302 sizeof(struct qeth_change_addr));
4305 cmd = __ipa_cmd(iob);
4306 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4307 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4308 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4309 card->dev->dev_addr);
4310 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4314 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4316 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4317 struct qeth_reply *reply, unsigned long data)
4319 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4320 struct qeth_set_access_ctrl *access_ctrl_req;
4321 int fallback = *(int *)reply->param;
4323 QETH_CARD_TEXT(card, 4, "setaccb");
4324 if (cmd->hdr.return_code)
4326 qeth_setadpparms_inspect_rc(cmd);
4328 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4329 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4330 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4331 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4332 cmd->data.setadapterparms.hdr.return_code);
4333 if (cmd->data.setadapterparms.hdr.return_code !=
4334 SET_ACCESS_CTRL_RC_SUCCESS)
4335 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4336 card->gdev->dev.kobj.name,
4337 access_ctrl_req->subcmd_code,
4338 cmd->data.setadapterparms.hdr.return_code);
4339 switch (cmd->data.setadapterparms.hdr.return_code) {
4340 case SET_ACCESS_CTRL_RC_SUCCESS:
4341 if (card->options.isolation == ISOLATION_MODE_NONE) {
4342 dev_info(&card->gdev->dev,
4343 "QDIO data connection isolation is deactivated\n");
4345 dev_info(&card->gdev->dev,
4346 "QDIO data connection isolation is activated\n");
4349 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4350 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4351 "deactivated\n", dev_name(&card->gdev->dev));
4353 card->options.isolation = card->options.prev_isolation;
4355 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4356 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4357 " activated\n", dev_name(&card->gdev->dev));
4359 card->options.isolation = card->options.prev_isolation;
4361 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4362 dev_err(&card->gdev->dev, "Adapter does not "
4363 "support QDIO data connection isolation\n");
4365 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4366 dev_err(&card->gdev->dev,
4367 "Adapter is dedicated. "
4368 "QDIO data connection isolation not supported\n");
4370 card->options.isolation = card->options.prev_isolation;
4372 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4373 dev_err(&card->gdev->dev,
4374 "TSO does not permit QDIO data connection isolation\n");
4376 card->options.isolation = card->options.prev_isolation;
4378 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4379 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4380 "support reflective relay mode\n");
4382 card->options.isolation = card->options.prev_isolation;
4384 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4385 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4386 "enabled at the adjacent switch port");
4388 card->options.isolation = card->options.prev_isolation;
4390 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4391 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4392 "at the adjacent switch failed\n");
4395 /* this should never happen */
4397 card->options.isolation = card->options.prev_isolation;
4403 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4404 enum qeth_ipa_isolation_modes isolation, int fallback)
4407 struct qeth_cmd_buffer *iob;
4408 struct qeth_ipa_cmd *cmd;
4409 struct qeth_set_access_ctrl *access_ctrl_req;
4411 QETH_CARD_TEXT(card, 4, "setacctl");
4413 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4414 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4416 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4417 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4418 sizeof(struct qeth_set_access_ctrl));
4421 cmd = __ipa_cmd(iob);
4422 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4423 access_ctrl_req->subcmd_code = isolation;
4425 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4427 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4431 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4435 QETH_CARD_TEXT(card, 4, "setactlo");
4437 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4438 card->info.type == QETH_CARD_TYPE_OSX) &&
4439 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4440 rc = qeth_setadpparms_set_access_ctrl(card,
4441 card->options.isolation, fallback);
4444 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4445 card->gdev->dev.kobj.name,
4449 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4450 card->options.isolation = ISOLATION_MODE_NONE;
4452 dev_err(&card->gdev->dev, "Adapter does not "
4453 "support QDIO data connection isolation\n");
4458 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4460 void qeth_tx_timeout(struct net_device *dev)
4462 struct qeth_card *card;
4464 card = dev->ml_priv;
4465 QETH_CARD_TEXT(card, 4, "txtimeo");
4466 card->stats.tx_errors++;
4467 qeth_schedule_recovery(card);
4469 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4471 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4473 struct qeth_card *card = dev->ml_priv;
4477 case MII_BMCR: /* Basic mode control register */
4479 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4480 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4481 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4482 rc |= BMCR_SPEED100;
4484 case MII_BMSR: /* Basic mode status register */
4485 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4486 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4489 case MII_PHYSID1: /* PHYS ID 1 */
4490 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4492 rc = (rc >> 5) & 0xFFFF;
4494 case MII_PHYSID2: /* PHYS ID 2 */
4495 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4497 case MII_ADVERTISE: /* Advertisement control reg */
4500 case MII_LPA: /* Link partner ability reg */
4501 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4502 LPA_100BASE4 | LPA_LPACK;
4504 case MII_EXPANSION: /* Expansion register */
4506 case MII_DCOUNTER: /* disconnect counter */
4508 case MII_FCSCOUNTER: /* false carrier counter */
4510 case MII_NWAYTEST: /* N-way auto-neg test register */
4512 case MII_RERRCOUNTER: /* rx error counter */
4513 rc = card->stats.rx_errors;
4515 case MII_SREVISION: /* silicon revision */
4517 case MII_RESV1: /* reserved 1 */
4519 case MII_LBRERROR: /* loopback, rx, bypass error */
4521 case MII_PHYADDR: /* physical address */
4523 case MII_RESV2: /* reserved 2 */
4525 case MII_TPISTATUS: /* TPI status for 10mbps */
4527 case MII_NCONFIG: /* network interface config */
4535 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4536 struct qeth_cmd_buffer *iob, int len,
4537 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4543 QETH_CARD_TEXT(card, 4, "sendsnmp");
4545 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4546 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4547 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4548 /* adjust PDU length fields in IPA_PDU_HEADER */
4549 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4551 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4552 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4553 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4554 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4555 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4556 reply_cb, reply_param);
4559 static int qeth_snmp_command_cb(struct qeth_card *card,
4560 struct qeth_reply *reply, unsigned long sdata)
4562 struct qeth_ipa_cmd *cmd;
4563 struct qeth_arp_query_info *qinfo;
4564 struct qeth_snmp_cmd *snmp;
4565 unsigned char *data;
4568 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4570 cmd = (struct qeth_ipa_cmd *) sdata;
4571 data = (unsigned char *)((char *)cmd - reply->offset);
4572 qinfo = (struct qeth_arp_query_info *) reply->param;
4573 snmp = &cmd->data.setadapterparms.data.snmp;
4575 if (cmd->hdr.return_code) {
4576 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4579 if (cmd->data.setadapterparms.hdr.return_code) {
4580 cmd->hdr.return_code =
4581 cmd->data.setadapterparms.hdr.return_code;
4582 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4585 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4586 if (cmd->data.setadapterparms.hdr.seq_no == 1)
4587 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4589 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4591 /* check if there is enough room in userspace */
4592 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4593 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4594 cmd->hdr.return_code = IPA_RC_ENOMEM;
4597 QETH_CARD_TEXT_(card, 4, "snore%i",
4598 cmd->data.setadapterparms.hdr.used_total);
4599 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4600 cmd->data.setadapterparms.hdr.seq_no);
4601 /*copy entries to user buffer*/
4602 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4603 memcpy(qinfo->udata + qinfo->udata_offset,
4605 data_len + offsetof(struct qeth_snmp_cmd, data));
4606 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4608 memcpy(qinfo->udata + qinfo->udata_offset,
4609 (char *)&snmp->request, data_len);
4611 qinfo->udata_offset += data_len;
4612 /* check if all replies received ... */
4613 QETH_CARD_TEXT_(card, 4, "srtot%i",
4614 cmd->data.setadapterparms.hdr.used_total);
4615 QETH_CARD_TEXT_(card, 4, "srseq%i",
4616 cmd->data.setadapterparms.hdr.seq_no);
4617 if (cmd->data.setadapterparms.hdr.seq_no <
4618 cmd->data.setadapterparms.hdr.used_total)
4623 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4625 struct qeth_cmd_buffer *iob;
4626 struct qeth_ipa_cmd *cmd;
4627 struct qeth_snmp_ureq *ureq;
4628 unsigned int req_len;
4629 struct qeth_arp_query_info qinfo = {0, };
4632 QETH_CARD_TEXT(card, 3, "snmpcmd");
4634 if (card->info.guestlan)
4637 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4638 (!card->options.layer2)) {
4641 /* skip 4 bytes (data_len struct member) to get req_len */
4642 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4644 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4645 sizeof(struct qeth_ipacmd_hdr) -
4646 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4648 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4650 QETH_CARD_TEXT(card, 2, "snmpnome");
4651 return PTR_ERR(ureq);
4653 qinfo.udata_len = ureq->hdr.data_len;
4654 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4659 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4661 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4662 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4667 cmd = __ipa_cmd(iob);
4668 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4669 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4670 qeth_snmp_command_cb, (void *)&qinfo);
4672 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4673 QETH_CARD_IFNAME(card), rc);
4675 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4684 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4685 struct qeth_reply *reply, unsigned long data)
4687 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4688 struct qeth_qoat_priv *priv;
4692 QETH_CARD_TEXT(card, 3, "qoatcb");
4693 if (qeth_setadpparms_inspect_rc(cmd))
4696 priv = (struct qeth_qoat_priv *)reply->param;
4697 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4698 resdata = (char *)data + 28;
4700 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4701 cmd->hdr.return_code = IPA_RC_FFFF;
4705 memcpy((priv->buffer + priv->response_len), resdata,
4707 priv->response_len += resdatalen;
4709 if (cmd->data.setadapterparms.hdr.seq_no <
4710 cmd->data.setadapterparms.hdr.used_total)
4715 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4718 struct qeth_cmd_buffer *iob;
4719 struct qeth_ipa_cmd *cmd;
4720 struct qeth_query_oat *oat_req;
4721 struct qeth_query_oat_data oat_data;
4722 struct qeth_qoat_priv priv;
4725 QETH_CARD_TEXT(card, 3, "qoatcmd");
4727 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4732 if (copy_from_user(&oat_data, udata,
4733 sizeof(struct qeth_query_oat_data))) {
4738 priv.buffer_len = oat_data.buffer_len;
4739 priv.response_len = 0;
4740 priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
4746 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4747 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4748 sizeof(struct qeth_query_oat));
4753 cmd = __ipa_cmd(iob);
4754 oat_req = &cmd->data.setadapterparms.data.query_oat;
4755 oat_req->subcmd_code = oat_data.command;
4757 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4760 if (is_compat_task())
4761 tmp = compat_ptr(oat_data.ptr);
4763 tmp = (void __user *)(unsigned long)oat_data.ptr;
4765 if (copy_to_user(tmp, priv.buffer,
4766 priv.response_len)) {
4771 oat_data.response_len = priv.response_len;
4773 if (copy_to_user(udata, &oat_data,
4774 sizeof(struct qeth_query_oat_data)))
4777 if (rc == IPA_RC_FFFF)
4786 static int qeth_query_card_info_cb(struct qeth_card *card,
4787 struct qeth_reply *reply, unsigned long data)
4789 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4790 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4791 struct qeth_query_card_info *card_info;
4793 QETH_CARD_TEXT(card, 2, "qcrdincb");
4794 if (qeth_setadpparms_inspect_rc(cmd))
4797 card_info = &cmd->data.setadapterparms.data.card_info;
4798 carrier_info->card_type = card_info->card_type;
4799 carrier_info->port_mode = card_info->port_mode;
4800 carrier_info->port_speed = card_info->port_speed;
4804 static int qeth_query_card_info(struct qeth_card *card,
4805 struct carrier_info *carrier_info)
4807 struct qeth_cmd_buffer *iob;
4809 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4810 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4812 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4813 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4816 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4817 (void *)carrier_info);
4821 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4822 * @card: pointer to a qeth_card
4825 * 0, if a MAC address has been set for the card's netdevice
4826 * a return code, for various error conditions
4828 int qeth_vm_request_mac(struct qeth_card *card)
4830 struct diag26c_mac_resp *response;
4831 struct diag26c_mac_req *request;
4832 struct ccw_dev_id id;
4835 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4840 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4841 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4842 if (!request || !response) {
4847 ccw_device_get_id(CARD_DDEV(card), &id);
4848 request->resp_buf_len = sizeof(*response);
4849 request->resp_version = DIAG26C_VERSION2;
4850 request->op_code = DIAG26C_GET_MAC;
4851 request->devno = id.devno;
4853 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4854 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4855 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4858 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4860 if (request->resp_buf_len < sizeof(*response) ||
4861 response->version != request->resp_version) {
4863 QETH_DBF_TEXT(SETUP, 2, "badresp");
4864 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4865 sizeof(request->resp_buf_len));
4866 } else if (!is_valid_ether_addr(response->mac)) {
4868 QETH_DBF_TEXT(SETUP, 2, "badmac");
4869 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4871 ether_addr_copy(card->dev->dev_addr, response->mac);
4879 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4881 static int qeth_get_qdio_q_format(struct qeth_card *card)
4883 if (card->info.type == QETH_CARD_TYPE_IQD)
4884 return QDIO_IQDIO_QFMT;
4886 return QDIO_QETH_QFMT;
4889 static void qeth_determine_capabilities(struct qeth_card *card)
4894 struct ccw_device *ddev;
4895 int ddev_offline = 0;
4897 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4898 ddev = CARD_DDEV(card);
4899 if (!ddev->online) {
4901 rc = ccw_device_set_online(ddev);
4903 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4908 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4910 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4911 dev_name(&card->gdev->dev), rc);
4912 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4915 qeth_configure_unitaddr(card, prcd);
4917 qeth_configure_blkt_default(card, prcd);
4920 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4922 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4924 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4925 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4926 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4927 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4928 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4929 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4930 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4931 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4932 dev_info(&card->gdev->dev,
4933 "Completion Queueing supported\n");
4935 card->options.cq = QETH_CQ_NOTAVAILABLE;
4940 if (ddev_offline == 1)
4941 ccw_device_set_offline(ddev);
4946 static void qeth_qdio_establish_cq(struct qeth_card *card,
4947 struct qdio_buffer **in_sbal_ptrs,
4948 void (**queue_start_poll)
4949 (struct ccw_device *, int,
4954 if (card->options.cq == QETH_CQ_ENABLED) {
4955 int offset = QDIO_MAX_BUFFERS_PER_Q *
4956 (card->qdio.no_in_queues - 1);
4957 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4958 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4959 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4962 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4966 static int qeth_qdio_establish(struct qeth_card *card)
4968 struct qdio_initialize init_data;
4969 char *qib_param_field;
4970 struct qdio_buffer **in_sbal_ptrs;
4971 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4972 struct qdio_buffer **out_sbal_ptrs;
4976 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4978 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4980 if (!qib_param_field) {
4982 goto out_free_nothing;
4985 qeth_create_qib_param_field(card, qib_param_field);
4986 qeth_create_qib_param_field_blkt(card, qib_param_field);
4988 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4991 if (!in_sbal_ptrs) {
4993 goto out_free_qib_param;
4995 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4996 in_sbal_ptrs[i] = (struct qdio_buffer *)
4997 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
5000 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
5002 if (!queue_start_poll) {
5004 goto out_free_in_sbals;
5006 for (i = 0; i < card->qdio.no_in_queues; ++i)
5007 queue_start_poll[i] = qeth_qdio_start_poll;
5009 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
5012 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
5015 if (!out_sbal_ptrs) {
5017 goto out_free_queue_start_poll;
5019 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
5020 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
5021 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
5022 card->qdio.out_qs[i]->bufs[j]->buffer);
5025 memset(&init_data, 0, sizeof(struct qdio_initialize));
5026 init_data.cdev = CARD_DDEV(card);
5027 init_data.q_format = qeth_get_qdio_q_format(card);
5028 init_data.qib_param_field_format = 0;
5029 init_data.qib_param_field = qib_param_field;
5030 init_data.no_input_qs = card->qdio.no_in_queues;
5031 init_data.no_output_qs = card->qdio.no_out_queues;
5032 init_data.input_handler = qeth_qdio_input_handler;
5033 init_data.output_handler = qeth_qdio_output_handler;
5034 init_data.queue_start_poll_array = queue_start_poll;
5035 init_data.int_parm = (unsigned long) card;
5036 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
5037 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
5038 init_data.output_sbal_state_array = card->qdio.out_bufstates;
5039 init_data.scan_threshold =
5040 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5042 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5043 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5044 rc = qdio_allocate(&init_data);
5046 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5049 rc = qdio_establish(&init_data);
5051 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5052 qdio_free(CARD_DDEV(card));
5056 switch (card->options.cq) {
5057 case QETH_CQ_ENABLED:
5058 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5060 case QETH_CQ_DISABLED:
5061 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5067 kfree(out_sbal_ptrs);
5068 out_free_queue_start_poll:
5069 kfree(queue_start_poll);
5071 kfree(in_sbal_ptrs);
5073 kfree(qib_param_field);
5078 static void qeth_core_free_card(struct qeth_card *card)
5081 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5082 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5083 qeth_clean_channel(&card->read);
5084 qeth_clean_channel(&card->write);
5085 qeth_free_qdio_buffers(card);
5086 unregister_service_level(&card->qeth_service_level);
5090 void qeth_trace_features(struct qeth_card *card)
5092 QETH_CARD_TEXT(card, 2, "features");
5093 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5094 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5095 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5096 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5097 sizeof(card->info.diagass_support));
5099 EXPORT_SYMBOL_GPL(qeth_trace_features);
5101 static struct ccw_device_id qeth_ids[] = {
5102 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5103 .driver_info = QETH_CARD_TYPE_OSD},
5104 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5105 .driver_info = QETH_CARD_TYPE_IQD},
5106 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5107 .driver_info = QETH_CARD_TYPE_OSN},
5108 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5109 .driver_info = QETH_CARD_TYPE_OSM},
5110 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5111 .driver_info = QETH_CARD_TYPE_OSX},
5114 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5116 static struct ccw_driver qeth_ccw_driver = {
5118 .owner = THIS_MODULE,
5122 .probe = ccwgroup_probe_ccwdev,
5123 .remove = ccwgroup_remove_ccwdev,
5126 int qeth_core_hardsetup_card(struct qeth_card *card)
5131 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5132 atomic_set(&card->force_alloc_skb, 0);
5133 qeth_update_from_chp_desc(card);
5136 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5137 dev_name(&card->gdev->dev));
5138 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5139 ccw_device_set_offline(CARD_DDEV(card));
5140 ccw_device_set_offline(CARD_WDEV(card));
5141 ccw_device_set_offline(CARD_RDEV(card));
5142 qdio_free(CARD_DDEV(card));
5143 rc = ccw_device_set_online(CARD_RDEV(card));
5146 rc = ccw_device_set_online(CARD_WDEV(card));
5149 rc = ccw_device_set_online(CARD_DDEV(card));
5153 if (rc == -ERESTARTSYS) {
5154 QETH_DBF_TEXT(SETUP, 2, "break1");
5157 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5163 qeth_determine_capabilities(card);
5164 qeth_init_tokens(card);
5165 qeth_init_func_level(card);
5166 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5167 if (rc == -ERESTARTSYS) {
5168 QETH_DBF_TEXT(SETUP, 2, "break2");
5171 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5177 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5178 if (rc == -ERESTARTSYS) {
5179 QETH_DBF_TEXT(SETUP, 2, "break3");
5182 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5188 card->read_or_write_problem = 0;
5189 rc = qeth_mpc_initialize(card);
5191 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5195 rc = qeth_send_startlan(card);
5197 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5198 if (rc == IPA_RC_LAN_OFFLINE) {
5199 dev_warn(&card->gdev->dev,
5200 "The LAN is offline\n");
5201 card->lan_online = 0;
5207 card->lan_online = 1;
5209 card->options.ipa4.supported_funcs = 0;
5210 card->options.ipa6.supported_funcs = 0;
5211 card->options.adp.supported_funcs = 0;
5212 card->options.sbp.supported_funcs = 0;
5213 card->info.diagass_support = 0;
5214 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5217 if (qeth_is_supported(card, IPA_IPV6)) {
5218 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5222 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5223 rc = qeth_query_setadapterparms(card);
5225 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5229 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5230 rc = qeth_query_setdiagass(card);
5232 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5238 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5239 "an error on the device\n");
5240 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5241 dev_name(&card->gdev->dev), rc);
5244 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5246 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5247 struct sk_buff *skb, int offset, int data_len)
5249 struct page *page = virt_to_page(element->addr);
5250 unsigned int next_frag;
5252 /* first fill the linear space */
5254 unsigned int linear = min(data_len, skb_tailroom(skb));
5256 skb_put_data(skb, element->addr + offset, linear);
5261 /* fall through to add page frag for remaining data */
5264 next_frag = skb_shinfo(skb)->nr_frags;
5266 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5269 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5271 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5274 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5275 struct qeth_qdio_buffer *qethbuffer,
5276 struct qdio_buffer_element **__element, int *__offset,
5277 struct qeth_hdr **hdr)
5279 struct qdio_buffer_element *element = *__element;
5280 struct qdio_buffer *buffer = qethbuffer->buffer;
5281 int offset = *__offset;
5282 struct sk_buff *skb;
5289 /* qeth_hdr must not cross element boundaries */
5290 while (element->length < offset + sizeof(struct qeth_hdr)) {
5291 if (qeth_is_last_sbale(element))
5296 *hdr = element->addr + offset;
5298 offset += sizeof(struct qeth_hdr);
5299 switch ((*hdr)->hdr.l2.id) {
5300 case QETH_HEADER_TYPE_LAYER2:
5301 skb_len = (*hdr)->hdr.l2.pkt_length;
5303 case QETH_HEADER_TYPE_LAYER3:
5304 skb_len = (*hdr)->hdr.l3.length;
5305 headroom = ETH_HLEN;
5307 case QETH_HEADER_TYPE_OSN:
5308 skb_len = (*hdr)->hdr.osn.pdu_length;
5309 headroom = sizeof(struct qeth_hdr);
5318 if (((skb_len >= card->options.rx_sg_cb) &&
5319 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5320 (!atomic_read(&card->force_alloc_skb))) ||
5321 (card->options.cq == QETH_CQ_ENABLED))
5324 if (use_rx_sg && qethbuffer->rx_skb) {
5325 /* QETH_CQ_ENABLED only: */
5326 skb = qethbuffer->rx_skb;
5327 qethbuffer->rx_skb = NULL;
5329 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5331 skb = napi_alloc_skb(&card->napi, linear + headroom);
5336 skb_reserve(skb, headroom);
5338 data_ptr = element->addr + offset;
5340 data_len = min(skb_len, (int)(element->length - offset));
5343 qeth_create_skb_frag(element, skb, offset,
5346 skb_put_data(skb, data_ptr, data_len);
5348 skb_len -= data_len;
5350 if (qeth_is_last_sbale(element)) {
5351 QETH_CARD_TEXT(card, 4, "unexeob");
5352 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5353 dev_kfree_skb_any(skb);
5354 card->stats.rx_errors++;
5359 data_ptr = element->addr;
5364 *__element = element;
5366 if (use_rx_sg && card->options.performance_stats) {
5367 card->perf_stats.sg_skbs_rx++;
5368 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5372 if (net_ratelimit()) {
5373 QETH_CARD_TEXT(card, 2, "noskbmem");
5375 card->stats.rx_dropped++;
5378 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5380 int qeth_poll(struct napi_struct *napi, int budget)
5382 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5384 struct qeth_qdio_buffer *buffer;
5386 int new_budget = budget;
5388 if (card->options.performance_stats) {
5389 card->perf_stats.inbound_cnt++;
5390 card->perf_stats.inbound_start_time = qeth_get_micros();
5394 if (!card->rx.b_count) {
5395 card->rx.qdio_err = 0;
5396 card->rx.b_count = qdio_get_next_buffers(
5397 card->data.ccwdev, 0, &card->rx.b_index,
5398 &card->rx.qdio_err);
5399 if (card->rx.b_count <= 0) {
5400 card->rx.b_count = 0;
5403 card->rx.b_element =
5404 &card->qdio.in_q->bufs[card->rx.b_index]
5405 .buffer->element[0];
5406 card->rx.e_offset = 0;
5409 while (card->rx.b_count) {
5410 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5411 if (!(card->rx.qdio_err &&
5412 qeth_check_qdio_errors(card, buffer->buffer,
5413 card->rx.qdio_err, "qinerr")))
5415 card->discipline->process_rx_buffer(
5416 card, new_budget, &done);
5421 if (card->options.performance_stats)
5422 card->perf_stats.bufs_rec++;
5423 qeth_put_buffer_pool_entry(card,
5424 buffer->pool_entry);
5425 qeth_queue_input_buffer(card, card->rx.b_index);
5427 if (card->rx.b_count) {
5429 (card->rx.b_index + 1) %
5430 QDIO_MAX_BUFFERS_PER_Q;
5431 card->rx.b_element =
5433 ->bufs[card->rx.b_index]
5434 .buffer->element[0];
5435 card->rx.e_offset = 0;
5439 if (work_done >= budget)
5442 new_budget = budget - work_done;
5446 napi_complete_done(napi, work_done);
5447 if (qdio_start_irq(card->data.ccwdev, 0))
5448 napi_schedule(&card->napi);
5450 if (card->options.performance_stats)
5451 card->perf_stats.inbound_time += qeth_get_micros() -
5452 card->perf_stats.inbound_start_time;
5455 EXPORT_SYMBOL_GPL(qeth_poll);
5457 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5459 if (!cmd->hdr.return_code)
5460 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5461 return cmd->hdr.return_code;
5464 int qeth_setassparms_cb(struct qeth_card *card,
5465 struct qeth_reply *reply, unsigned long data)
5467 struct qeth_ipa_cmd *cmd;
5469 QETH_CARD_TEXT(card, 4, "defadpcb");
5471 cmd = (struct qeth_ipa_cmd *) data;
5472 if (cmd->hdr.return_code == 0) {
5473 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5474 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5475 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5476 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5477 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5481 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5483 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5484 enum qeth_ipa_funcs ipa_func,
5485 __u16 cmd_code, __u16 len,
5486 enum qeth_prot_versions prot)
5488 struct qeth_cmd_buffer *iob;
5489 struct qeth_ipa_cmd *cmd;
5491 QETH_CARD_TEXT(card, 4, "getasscm");
5492 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5495 cmd = __ipa_cmd(iob);
5496 cmd->data.setassparms.hdr.assist_no = ipa_func;
5497 cmd->data.setassparms.hdr.length = 8 + len;
5498 cmd->data.setassparms.hdr.command_code = cmd_code;
5499 cmd->data.setassparms.hdr.return_code = 0;
5500 cmd->data.setassparms.hdr.seq_no = 0;
5505 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5507 int qeth_send_setassparms(struct qeth_card *card,
5508 struct qeth_cmd_buffer *iob, __u16 len, long data,
5509 int (*reply_cb)(struct qeth_card *,
5510 struct qeth_reply *, unsigned long),
5514 struct qeth_ipa_cmd *cmd;
5516 QETH_CARD_TEXT(card, 4, "sendassp");
5518 cmd = __ipa_cmd(iob);
5519 if (len <= sizeof(__u32))
5520 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5521 else /* (len > sizeof(__u32)) */
5522 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5524 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5527 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5529 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5530 enum qeth_ipa_funcs ipa_func,
5531 u16 cmd_code, long data,
5532 enum qeth_prot_versions prot)
5536 struct qeth_cmd_buffer *iob;
5538 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5540 length = sizeof(__u32);
5541 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5544 rc = qeth_send_setassparms(card, iob, length, data,
5545 qeth_setassparms_cb, NULL);
5548 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5550 static void qeth_unregister_dbf_views(void)
5553 for (x = 0; x < QETH_DBF_INFOS; x++) {
5554 debug_unregister(qeth_dbf[x].id);
5555 qeth_dbf[x].id = NULL;
5559 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5561 char dbf_txt_buf[32];
5564 if (!debug_level_enabled(id, level))
5566 va_start(args, fmt);
5567 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5569 debug_text_event(id, level, dbf_txt_buf);
5571 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5573 static int qeth_register_dbf_views(void)
5578 for (x = 0; x < QETH_DBF_INFOS; x++) {
5579 /* register the areas */
5580 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5584 if (qeth_dbf[x].id == NULL) {
5585 qeth_unregister_dbf_views();
5589 /* register a view */
5590 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5592 qeth_unregister_dbf_views();
5596 /* set a passing level */
5597 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5603 int qeth_core_load_discipline(struct qeth_card *card,
5604 enum qeth_discipline_id discipline)
5608 mutex_lock(&qeth_mod_mutex);
5609 switch (discipline) {
5610 case QETH_DISCIPLINE_LAYER3:
5611 card->discipline = try_then_request_module(
5612 symbol_get(qeth_l3_discipline), "qeth_l3");
5614 case QETH_DISCIPLINE_LAYER2:
5615 card->discipline = try_then_request_module(
5616 symbol_get(qeth_l2_discipline), "qeth_l2");
5622 if (!card->discipline) {
5623 dev_err(&card->gdev->dev, "There is no kernel module to "
5624 "support discipline %d\n", discipline);
5627 mutex_unlock(&qeth_mod_mutex);
5631 void qeth_core_free_discipline(struct qeth_card *card)
5633 if (card->options.layer2)
5634 symbol_put(qeth_l2_discipline);
5636 symbol_put(qeth_l3_discipline);
5637 card->discipline = NULL;
5640 const struct device_type qeth_generic_devtype = {
5641 .name = "qeth_generic",
5642 .groups = qeth_generic_attr_groups,
5644 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5646 static const struct device_type qeth_osn_devtype = {
5648 .groups = qeth_osn_attr_groups,
5651 #define DBF_NAME_LEN 20
5653 struct qeth_dbf_entry {
5654 char dbf_name[DBF_NAME_LEN];
5655 debug_info_t *dbf_info;
5656 struct list_head dbf_list;
5659 static LIST_HEAD(qeth_dbf_list);
5660 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5662 static debug_info_t *qeth_get_dbf_entry(char *name)
5664 struct qeth_dbf_entry *entry;
5665 debug_info_t *rc = NULL;
5667 mutex_lock(&qeth_dbf_list_mutex);
5668 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5669 if (strcmp(entry->dbf_name, name) == 0) {
5670 rc = entry->dbf_info;
5674 mutex_unlock(&qeth_dbf_list_mutex);
5678 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5680 struct qeth_dbf_entry *new_entry;
5682 card->debug = debug_register(name, 2, 1, 8);
5684 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5687 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5689 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5692 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5693 new_entry->dbf_info = card->debug;
5694 mutex_lock(&qeth_dbf_list_mutex);
5695 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5696 mutex_unlock(&qeth_dbf_list_mutex);
5701 debug_unregister(card->debug);
5706 static void qeth_clear_dbf_list(void)
5708 struct qeth_dbf_entry *entry, *tmp;
5710 mutex_lock(&qeth_dbf_list_mutex);
5711 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5712 list_del(&entry->dbf_list);
5713 debug_unregister(entry->dbf_info);
5716 mutex_unlock(&qeth_dbf_list_mutex);
5719 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5721 struct qeth_card *card;
5724 enum qeth_discipline_id enforced_disc;
5725 unsigned long flags;
5726 char dbf_name[DBF_NAME_LEN];
5728 QETH_DBF_TEXT(SETUP, 2, "probedev");
5731 if (!get_device(dev))
5734 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5736 card = qeth_alloc_card();
5738 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5743 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5744 dev_name(&gdev->dev));
5745 card->debug = qeth_get_dbf_entry(dbf_name);
5747 rc = qeth_add_dbf_entry(card, dbf_name);
5752 card->read.ccwdev = gdev->cdev[0];
5753 card->write.ccwdev = gdev->cdev[1];
5754 card->data.ccwdev = gdev->cdev[2];
5755 dev_set_drvdata(&gdev->dev, card);
5757 gdev->cdev[0]->handler = qeth_irq;
5758 gdev->cdev[1]->handler = qeth_irq;
5759 gdev->cdev[2]->handler = qeth_irq;
5761 qeth_determine_card_type(card);
5762 rc = qeth_setup_card(card);
5764 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5768 qeth_determine_capabilities(card);
5769 enforced_disc = qeth_enforce_discipline(card);
5770 switch (enforced_disc) {
5771 case QETH_DISCIPLINE_UNDETERMINED:
5772 gdev->dev.type = &qeth_generic_devtype;
5775 card->info.layer_enforced = true;
5776 rc = qeth_core_load_discipline(card, enforced_disc);
5780 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5781 ? card->discipline->devtype
5782 : &qeth_osn_devtype;
5783 rc = card->discipline->setup(card->gdev);
5789 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5790 list_add_tail(&card->list, &qeth_core_card_list.list);
5791 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5795 qeth_core_free_discipline(card);
5797 qeth_core_free_card(card);
5803 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5805 unsigned long flags;
5806 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5808 QETH_DBF_TEXT(SETUP, 2, "removedv");
5810 if (card->discipline) {
5811 card->discipline->remove(gdev);
5812 qeth_core_free_discipline(card);
5815 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5816 list_del(&card->list);
5817 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5818 qeth_core_free_card(card);
5819 dev_set_drvdata(&gdev->dev, NULL);
5820 put_device(&gdev->dev);
5824 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5826 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5828 enum qeth_discipline_id def_discipline;
5830 if (!card->discipline) {
5831 if (card->info.type == QETH_CARD_TYPE_IQD)
5832 def_discipline = QETH_DISCIPLINE_LAYER3;
5834 def_discipline = QETH_DISCIPLINE_LAYER2;
5835 rc = qeth_core_load_discipline(card, def_discipline);
5838 rc = card->discipline->setup(card->gdev);
5840 qeth_core_free_discipline(card);
5844 rc = card->discipline->set_online(gdev);
5849 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5851 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5852 return card->discipline->set_offline(gdev);
5855 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5857 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5858 qeth_set_allowed_threads(card, 0, 1);
5859 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5860 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5861 qeth_qdio_clear_card(card, 0);
5862 qeth_clear_qdio_buffers(card);
5863 qdio_free(CARD_DDEV(card));
5866 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5868 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5869 if (card->discipline && card->discipline->freeze)
5870 return card->discipline->freeze(gdev);
5874 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5876 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5877 if (card->discipline && card->discipline->thaw)
5878 return card->discipline->thaw(gdev);
5882 static int qeth_core_restore(struct ccwgroup_device *gdev)
5884 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5885 if (card->discipline && card->discipline->restore)
5886 return card->discipline->restore(gdev);
5890 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5892 .owner = THIS_MODULE,
5895 .ccw_driver = &qeth_ccw_driver,
5896 .setup = qeth_core_probe_device,
5897 .remove = qeth_core_remove_device,
5898 .set_online = qeth_core_set_online,
5899 .set_offline = qeth_core_set_offline,
5900 .shutdown = qeth_core_shutdown,
5903 .freeze = qeth_core_freeze,
5904 .thaw = qeth_core_thaw,
5905 .restore = qeth_core_restore,
5908 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5913 err = ccwgroup_create_dev(qeth_core_root_dev,
5914 &qeth_core_ccwgroup_driver, 3, buf);
5916 return err ? err : count;
5918 static DRIVER_ATTR_WO(group);
5920 static struct attribute *qeth_drv_attrs[] = {
5921 &driver_attr_group.attr,
5924 static struct attribute_group qeth_drv_attr_group = {
5925 .attrs = qeth_drv_attrs,
5927 static const struct attribute_group *qeth_drv_attr_groups[] = {
5928 &qeth_drv_attr_group,
5932 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5934 struct qeth_card *card = dev->ml_priv;
5935 struct mii_ioctl_data *mii_data;
5941 if (!qeth_card_hw_is_reachable(card))
5944 if (card->info.type == QETH_CARD_TYPE_OSN)
5948 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5949 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5951 case SIOC_QETH_GET_CARD_TYPE:
5952 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5953 card->info.type == QETH_CARD_TYPE_OSM ||
5954 card->info.type == QETH_CARD_TYPE_OSX) &&
5955 !card->info.guestlan)
5960 mii_data = if_mii(rq);
5961 mii_data->phy_id = 0;
5964 mii_data = if_mii(rq);
5965 if (mii_data->phy_id != 0)
5968 mii_data->val_out = qeth_mdio_read(dev,
5969 mii_data->phy_id, mii_data->reg_num);
5971 case SIOC_QETH_QUERY_OAT:
5972 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5975 if (card->discipline->do_ioctl)
5976 rc = card->discipline->do_ioctl(dev, rq, cmd);
5981 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5984 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5987 const char str[ETH_GSTRING_LEN];
5988 } qeth_ethtool_stats_keys[] = {
5993 {"tx skbs no packing"},
5994 {"tx buffers no packing"},
5995 {"tx skbs packing"},
5996 {"tx buffers packing"},
5999 /* 10 */{"rx sg skbs"},
6001 {"rx sg page allocs"},
6002 {"tx large kbytes"},
6004 {"tx pk state ch n->p"},
6005 {"tx pk state ch p->n"},
6006 {"tx pk watermark low"},
6007 {"tx pk watermark high"},
6008 {"queue 0 buffer usage"},
6009 /* 20 */{"queue 1 buffer usage"},
6010 {"queue 2 buffer usage"},
6011 {"queue 3 buffer usage"},
6014 {"rx do_QDIO time"},
6015 {"rx do_QDIO count"},
6016 {"tx handler time"},
6017 {"tx handler count"},
6019 /* 30 */{"tx count"},
6020 {"tx do_QDIO time"},
6021 {"tx do_QDIO count"},
6025 {"cq handler count"},
6026 {"cq handler time"},
6030 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6032 switch (stringset) {
6034 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6039 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6041 void qeth_core_get_ethtool_stats(struct net_device *dev,
6042 struct ethtool_stats *stats, u64 *data)
6044 struct qeth_card *card = dev->ml_priv;
6045 data[0] = card->stats.rx_packets -
6046 card->perf_stats.initial_rx_packets;
6047 data[1] = card->perf_stats.bufs_rec;
6048 data[2] = card->stats.tx_packets -
6049 card->perf_stats.initial_tx_packets;
6050 data[3] = card->perf_stats.bufs_sent;
6051 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6052 - card->perf_stats.skbs_sent_pack;
6053 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6054 data[6] = card->perf_stats.skbs_sent_pack;
6055 data[7] = card->perf_stats.bufs_sent_pack;
6056 data[8] = card->perf_stats.sg_skbs_sent;
6057 data[9] = card->perf_stats.sg_frags_sent;
6058 data[10] = card->perf_stats.sg_skbs_rx;
6059 data[11] = card->perf_stats.sg_frags_rx;
6060 data[12] = card->perf_stats.sg_alloc_page_rx;
6061 data[13] = (card->perf_stats.large_send_bytes >> 10);
6062 data[14] = card->perf_stats.large_send_cnt;
6063 data[15] = card->perf_stats.sc_dp_p;
6064 data[16] = card->perf_stats.sc_p_dp;
6065 data[17] = QETH_LOW_WATERMARK_PACK;
6066 data[18] = QETH_HIGH_WATERMARK_PACK;
6067 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6068 data[20] = (card->qdio.no_out_queues > 1) ?
6069 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6070 data[21] = (card->qdio.no_out_queues > 2) ?
6071 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6072 data[22] = (card->qdio.no_out_queues > 3) ?
6073 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6074 data[23] = card->perf_stats.inbound_time;
6075 data[24] = card->perf_stats.inbound_cnt;
6076 data[25] = card->perf_stats.inbound_do_qdio_time;
6077 data[26] = card->perf_stats.inbound_do_qdio_cnt;
6078 data[27] = card->perf_stats.outbound_handler_time;
6079 data[28] = card->perf_stats.outbound_handler_cnt;
6080 data[29] = card->perf_stats.outbound_time;
6081 data[30] = card->perf_stats.outbound_cnt;
6082 data[31] = card->perf_stats.outbound_do_qdio_time;
6083 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6084 data[33] = card->perf_stats.tx_csum;
6085 data[34] = card->perf_stats.tx_lin;
6086 data[35] = card->perf_stats.tx_linfail;
6087 data[36] = card->perf_stats.cq_cnt;
6088 data[37] = card->perf_stats.cq_time;
6089 data[38] = card->perf_stats.rx_csum;
6091 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6093 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6095 switch (stringset) {
6097 memcpy(data, &qeth_ethtool_stats_keys,
6098 sizeof(qeth_ethtool_stats_keys));
6105 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6107 void qeth_core_get_drvinfo(struct net_device *dev,
6108 struct ethtool_drvinfo *info)
6110 struct qeth_card *card = dev->ml_priv;
6112 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6113 sizeof(info->driver));
6114 strlcpy(info->version, "1.0", sizeof(info->version));
6115 strlcpy(info->fw_version, card->info.mcl_level,
6116 sizeof(info->fw_version));
6117 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6118 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6120 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6122 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6123 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6124 /* Always advertise and support all speeds up to specified, and only one */
6125 /* specified port type. */
6126 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6127 int maxspeed, int porttype)
6129 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6130 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6131 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6133 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6134 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6138 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6139 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6142 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6143 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6146 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6147 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6151 /* fallthrough from high to low, to select all legal speeds: */
6154 ethtool_link_ksettings_add_link_mode(cmd, supported,
6156 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6159 ethtool_link_ksettings_add_link_mode(cmd, supported,
6161 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6163 ethtool_link_ksettings_add_link_mode(cmd, supported,
6165 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6168 ethtool_link_ksettings_add_link_mode(cmd, supported,
6170 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6172 ethtool_link_ksettings_add_link_mode(cmd, supported,
6174 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6177 ethtool_link_ksettings_add_link_mode(cmd, supported,
6179 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6181 ethtool_link_ksettings_add_link_mode(cmd, supported,
6183 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6185 /* end fallthrough */
6188 ethtool_link_ksettings_add_link_mode(cmd, supported,
6190 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6192 ethtool_link_ksettings_add_link_mode(cmd, supported,
6194 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6200 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6201 struct ethtool_link_ksettings *cmd)
6203 struct qeth_card *card = netdev->ml_priv;
6204 enum qeth_link_types link_type;
6205 struct carrier_info carrier_info;
6208 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6209 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6211 link_type = card->info.link_type;
6213 cmd->base.duplex = DUPLEX_FULL;
6214 cmd->base.autoneg = AUTONEG_ENABLE;
6215 cmd->base.phy_address = 0;
6216 cmd->base.mdio_support = 0;
6217 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6218 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6220 switch (link_type) {
6221 case QETH_LINK_TYPE_FAST_ETH:
6222 case QETH_LINK_TYPE_LANE_ETH100:
6223 cmd->base.speed = SPEED_100;
6224 cmd->base.port = PORT_TP;
6226 case QETH_LINK_TYPE_GBIT_ETH:
6227 case QETH_LINK_TYPE_LANE_ETH1000:
6228 cmd->base.speed = SPEED_1000;
6229 cmd->base.port = PORT_FIBRE;
6231 case QETH_LINK_TYPE_10GBIT_ETH:
6232 cmd->base.speed = SPEED_10000;
6233 cmd->base.port = PORT_FIBRE;
6236 cmd->base.speed = SPEED_10;
6237 cmd->base.port = PORT_TP;
6239 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6241 /* Check if we can obtain more accurate information. */
6242 /* If QUERY_CARD_INFO command is not supported or fails, */
6243 /* just return the heuristics that was filled above. */
6244 if (!qeth_card_hw_is_reachable(card))
6246 rc = qeth_query_card_info(card, &carrier_info);
6247 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6249 if (rc) /* report error from the hardware operation */
6251 /* on success, fill in the information got from the hardware */
6254 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6255 carrier_info.card_type,
6256 carrier_info.port_mode,
6257 carrier_info.port_speed);
6259 /* Update attributes for which we've obtained more authoritative */
6260 /* information, leave the rest the way they where filled above. */
6261 switch (carrier_info.card_type) {
6262 case CARD_INFO_TYPE_1G_COPPER_A:
6263 case CARD_INFO_TYPE_1G_COPPER_B:
6264 cmd->base.port = PORT_TP;
6265 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6267 case CARD_INFO_TYPE_1G_FIBRE_A:
6268 case CARD_INFO_TYPE_1G_FIBRE_B:
6269 cmd->base.port = PORT_FIBRE;
6270 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6272 case CARD_INFO_TYPE_10G_FIBRE_A:
6273 case CARD_INFO_TYPE_10G_FIBRE_B:
6274 cmd->base.port = PORT_FIBRE;
6275 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6279 switch (carrier_info.port_mode) {
6280 case CARD_INFO_PORTM_FULLDUPLEX:
6281 cmd->base.duplex = DUPLEX_FULL;
6283 case CARD_INFO_PORTM_HALFDUPLEX:
6284 cmd->base.duplex = DUPLEX_HALF;
6288 switch (carrier_info.port_speed) {
6289 case CARD_INFO_PORTS_10M:
6290 cmd->base.speed = SPEED_10;
6292 case CARD_INFO_PORTS_100M:
6293 cmd->base.speed = SPEED_100;
6295 case CARD_INFO_PORTS_1G:
6296 cmd->base.speed = SPEED_1000;
6298 case CARD_INFO_PORTS_10G:
6299 cmd->base.speed = SPEED_10000;
6305 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6307 /* Callback to handle checksum offload command reply from OSA card.
6308 * Verify that required features have been enabled on the card.
6309 * Return error in hdr->return_code as this value is checked by caller.
6311 * Always returns zero to indicate no further messages from the OSA card.
6313 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6314 struct qeth_reply *reply,
6317 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6318 struct qeth_checksum_cmd *chksum_cb =
6319 (struct qeth_checksum_cmd *)reply->param;
6321 QETH_CARD_TEXT(card, 4, "chkdoccb");
6322 if (qeth_setassparms_inspect_rc(cmd))
6325 memset(chksum_cb, 0, sizeof(*chksum_cb));
6326 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6327 chksum_cb->supported =
6328 cmd->data.setassparms.data.chksum.supported;
6329 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6331 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6332 chksum_cb->supported =
6333 cmd->data.setassparms.data.chksum.supported;
6334 chksum_cb->enabled =
6335 cmd->data.setassparms.data.chksum.enabled;
6336 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6337 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6342 /* Send command to OSA card and check results. */
6343 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6344 enum qeth_ipa_funcs ipa_func,
6345 __u16 cmd_code, long data,
6346 struct qeth_checksum_cmd *chksum_cb,
6347 enum qeth_prot_versions prot)
6349 struct qeth_cmd_buffer *iob;
6352 QETH_CARD_TEXT(card, 4, "chkdocmd");
6353 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6354 sizeof(__u32), prot);
6356 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6357 qeth_ipa_checksum_run_cmd_cb,
6362 static int qeth_send_checksum_on(struct qeth_card *card, int cstype,
6363 enum qeth_prot_versions prot)
6365 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6366 struct qeth_checksum_cmd chksum_cb;
6369 if (prot == QETH_PROT_IPV4)
6370 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6371 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6374 if ((required_features & chksum_cb.supported) !=
6377 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6378 cstype == IPA_INBOUND_CHECKSUM)
6379 dev_warn(&card->gdev->dev,
6380 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6381 QETH_CARD_IFNAME(card));
6384 qeth_send_simple_setassparms_prot(card, cstype,
6385 IPA_CMD_ASS_STOP, 0, prot);
6386 dev_warn(&card->gdev->dev,
6387 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n",
6388 prot, QETH_CARD_IFNAME(card));
6391 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6392 chksum_cb.supported, &chksum_cb,
6395 if ((required_features & chksum_cb.enabled) !=
6400 qeth_send_simple_setassparms_prot(card, cstype,
6401 IPA_CMD_ASS_STOP, 0, prot);
6402 dev_warn(&card->gdev->dev,
6403 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n",
6404 prot, QETH_CARD_IFNAME(card));
6408 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6409 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6413 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6414 enum qeth_prot_versions prot)
6416 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot)
6417 : qeth_send_simple_setassparms_prot(card, cstype,
6418 IPA_CMD_ASS_STOP, 0,
6420 return rc ? -EIO : 0;
6423 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6427 QETH_CARD_TEXT(card, 3, "sttso");
6430 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6431 IPA_CMD_ASS_START, 0);
6433 dev_warn(&card->gdev->dev,
6434 "Starting outbound TCP segmentation offload for %s failed\n",
6435 QETH_CARD_IFNAME(card));
6438 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6440 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6441 IPA_CMD_ASS_STOP, 0);
6446 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6448 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6451 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6452 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6454 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6455 /* no/one Offload Assist available, so the rc is trivial */
6458 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6462 /* enable: success if any Assist is active */
6463 return (rc_ipv6) ? rc_ipv4 : 0;
6465 /* disable: failure if any Assist is still active */
6466 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6469 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \
6472 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6473 * @dev: a net_device
6475 void qeth_enable_hw_features(struct net_device *dev)
6477 struct qeth_card *card = dev->ml_priv;
6478 netdev_features_t features;
6481 features = dev->features;
6482 /* force-off any feature that needs an IPA sequence.
6483 * netdev_update_features() will restart them.
6485 dev->features &= ~QETH_HW_FEATURES;
6486 netdev_update_features(dev);
6487 if (features != dev->features)
6488 dev_warn(&card->gdev->dev,
6489 "Device recovery failed to restore all offload features\n");
6492 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6494 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6496 struct qeth_card *card = dev->ml_priv;
6497 netdev_features_t changed = dev->features ^ features;
6500 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6501 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6503 if ((changed & NETIF_F_IP_CSUM)) {
6504 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6505 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6507 changed ^= NETIF_F_IP_CSUM;
6509 if (changed & NETIF_F_IPV6_CSUM) {
6510 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6511 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6513 changed ^= NETIF_F_IPV6_CSUM;
6515 if (changed & NETIF_F_RXCSUM) {
6516 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6518 changed ^= NETIF_F_RXCSUM;
6520 if ((changed & NETIF_F_TSO)) {
6521 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6523 changed ^= NETIF_F_TSO;
6526 /* everything changed successfully? */
6527 if ((dev->features ^ features) == changed)
6529 /* something went wrong. save changed features and return error */
6530 dev->features ^= changed;
6533 EXPORT_SYMBOL_GPL(qeth_set_features);
6535 netdev_features_t qeth_fix_features(struct net_device *dev,
6536 netdev_features_t features)
6538 struct qeth_card *card = dev->ml_priv;
6540 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6541 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6542 features &= ~NETIF_F_IP_CSUM;
6543 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6544 features &= ~NETIF_F_IPV6_CSUM;
6545 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6546 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6547 features &= ~NETIF_F_RXCSUM;
6548 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6549 features &= ~NETIF_F_TSO;
6550 /* if the card isn't up, remove features that require hw changes */
6551 if (card->state == CARD_STATE_DOWN ||
6552 card->state == CARD_STATE_RECOVER)
6553 features &= ~QETH_HW_FEATURES;
6554 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6557 EXPORT_SYMBOL_GPL(qeth_fix_features);
6559 netdev_features_t qeth_features_check(struct sk_buff *skb,
6560 struct net_device *dev,
6561 netdev_features_t features)
6563 /* GSO segmentation builds skbs with
6564 * a (small) linear part for the headers, and
6565 * page frags for the data.
6566 * Compared to a linear skb, the header-only part consumes an
6567 * additional buffer element. This reduces buffer utilization, and
6568 * hurts throughput. So compress small segments into one element.
6570 if (netif_needs_gso(skb, features)) {
6571 /* match skb_segment(): */
6572 unsigned int doffset = skb->data - skb_mac_header(skb);
6573 unsigned int hsize = skb_shinfo(skb)->gso_size;
6574 unsigned int hroom = skb_headroom(skb);
6576 /* linearize only if resulting skb allocations are order-0: */
6577 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6578 features &= ~NETIF_F_SG;
6581 return vlan_features_check(skb, features);
6583 EXPORT_SYMBOL_GPL(qeth_features_check);
6585 static int __init qeth_core_init(void)
6589 pr_info("loading core functions\n");
6590 INIT_LIST_HEAD(&qeth_core_card_list.list);
6591 INIT_LIST_HEAD(&qeth_dbf_list);
6592 rwlock_init(&qeth_core_card_list.rwlock);
6593 mutex_init(&qeth_mod_mutex);
6595 qeth_wq = create_singlethread_workqueue("qeth_wq");
6601 rc = qeth_register_dbf_views();
6604 qeth_core_root_dev = root_device_register("qeth");
6605 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6608 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6609 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6610 if (!qeth_core_header_cache) {
6614 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6615 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6616 if (!qeth_qdio_outbuf_cache) {
6620 rc = ccw_driver_register(&qeth_ccw_driver);
6623 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6624 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6631 ccw_driver_unregister(&qeth_ccw_driver);
6633 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6635 kmem_cache_destroy(qeth_core_header_cache);
6637 root_device_unregister(qeth_core_root_dev);
6639 qeth_unregister_dbf_views();
6641 destroy_workqueue(qeth_wq);
6643 pr_err("Initializing the qeth device driver failed\n");
6647 static void __exit qeth_core_exit(void)
6649 qeth_clear_dbf_list();
6650 destroy_workqueue(qeth_wq);
6651 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6652 ccw_driver_unregister(&qeth_ccw_driver);
6653 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6654 kmem_cache_destroy(qeth_core_header_cache);
6655 root_device_unregister(qeth_core_root_dev);
6656 qeth_unregister_dbf_views();
6657 pr_info("core functions removed\n");
6660 module_init(qeth_core_init);
6661 module_exit(qeth_core_exit);
6662 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6663 MODULE_DESCRIPTION("qeth core functions");
6664 MODULE_LICENSE("GPL");