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>
28 #include <linux/vmalloc.h>
30 #include <net/iucv/af_iucv.h>
31 #include <net/dsfield.h>
33 #include <asm/ebcdic.h>
34 #include <asm/chpid.h>
36 #include <asm/sysinfo.h>
39 #include <asm/ccwdev.h>
40 #include <asm/cpcmd.h>
42 #include "qeth_core.h"
44 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
45 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
47 [QETH_DBF_SETUP] = {"qeth_setup",
48 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
49 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
50 &debug_sprintf_view, NULL},
51 [QETH_DBF_CTRL] = {"qeth_control",
52 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
54 EXPORT_SYMBOL_GPL(qeth_dbf);
56 struct qeth_card_list_struct qeth_core_card_list;
57 EXPORT_SYMBOL_GPL(qeth_core_card_list);
58 struct kmem_cache *qeth_core_header_cache;
59 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
60 static struct kmem_cache *qeth_qdio_outbuf_cache;
62 static struct device *qeth_core_root_dev;
63 static struct lock_class_key qdio_out_skb_queue_key;
64 static struct mutex qeth_mod_mutex;
66 static void qeth_send_control_data_cb(struct qeth_channel *,
67 struct qeth_cmd_buffer *);
68 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
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);
476 static void qeth_qdio_handle_aob(struct qeth_card *card,
477 unsigned long phys_aob_addr)
480 struct qeth_qdio_out_buffer *buffer;
481 enum iucv_tx_notify notification;
484 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
485 QETH_CARD_TEXT(card, 5, "haob");
486 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
487 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
488 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
490 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
491 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
492 notification = TX_NOTIFY_OK;
494 WARN_ON_ONCE(atomic_read(&buffer->state) !=
495 QETH_QDIO_BUF_PENDING);
496 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
497 notification = TX_NOTIFY_DELAYED_OK;
500 if (aob->aorc != 0) {
501 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
502 notification = qeth_compute_cq_notification(aob->aorc, 1);
504 qeth_notify_skbs(buffer->q, buffer, notification);
506 /* Free dangling allocations. The attached skbs are handled by
507 * qeth_cleanup_handled_pending().
510 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
512 if (aob->sba[i] && buffer->is_header[i])
513 kmem_cache_free(qeth_core_header_cache,
514 (void *) aob->sba[i]);
516 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
518 qdio_release_aob(aob);
521 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
523 return card->options.cq == QETH_CQ_ENABLED &&
524 card->qdio.c_q != NULL &&
526 queue == card->qdio.no_in_queues - 1;
529 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data)
531 ccw->cmd_code = cmd_code;
532 ccw->flags = CCW_FLAG_SLI;
534 ccw->cda = (__u32) __pa(data);
537 static int __qeth_issue_next_read(struct qeth_card *card)
539 struct qeth_channel *channel = &card->read;
540 struct qeth_cmd_buffer *iob;
543 QETH_CARD_TEXT(card, 5, "issnxrd");
544 if (channel->state != CH_STATE_UP)
546 iob = qeth_get_buffer(channel);
548 dev_warn(&card->gdev->dev, "The qeth device driver "
549 "failed to recover an error on the device\n");
550 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
551 "available\n", dev_name(&card->gdev->dev));
554 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
555 QETH_CARD_TEXT(card, 6, "noirqpnd");
556 rc = ccw_device_start(channel->ccwdev, channel->ccw,
559 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
560 "rc=%i\n", dev_name(&card->gdev->dev), rc);
561 atomic_set(&channel->irq_pending, 0);
562 qeth_release_buffer(channel, iob);
563 card->read_or_write_problem = 1;
564 qeth_schedule_recovery(card);
565 wake_up(&card->wait_q);
570 static int qeth_issue_next_read(struct qeth_card *card)
574 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
575 ret = __qeth_issue_next_read(card);
576 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
581 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
583 struct qeth_reply *reply;
585 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
587 refcount_set(&reply->refcnt, 1);
588 atomic_set(&reply->received, 0);
594 static void qeth_get_reply(struct qeth_reply *reply)
596 refcount_inc(&reply->refcnt);
599 static void qeth_put_reply(struct qeth_reply *reply)
601 if (refcount_dec_and_test(&reply->refcnt))
605 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
606 struct qeth_card *card)
608 const char *ipa_name;
609 int com = cmd->hdr.command;
610 ipa_name = qeth_get_ipa_cmd_name(com);
612 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
614 ipa_name, com, dev_name(&card->gdev->dev),
615 QETH_CARD_IFNAME(card), rc,
616 qeth_get_ipa_msg(rc));
618 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
619 ipa_name, com, dev_name(&card->gdev->dev),
620 QETH_CARD_IFNAME(card));
623 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
624 struct qeth_cmd_buffer *iob)
626 struct qeth_ipa_cmd *cmd = NULL;
628 QETH_CARD_TEXT(card, 5, "chkipad");
629 if (IS_IPA(iob->data)) {
630 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
631 if (IS_IPA_REPLY(cmd)) {
632 if (cmd->hdr.command != IPA_CMD_SETCCID &&
633 cmd->hdr.command != IPA_CMD_DELCCID &&
634 cmd->hdr.command != IPA_CMD_MODCCID &&
635 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
636 qeth_issue_ipa_msg(cmd,
637 cmd->hdr.return_code, card);
640 switch (cmd->hdr.command) {
641 case IPA_CMD_STOPLAN:
642 if (cmd->hdr.return_code ==
643 IPA_RC_VEPA_TO_VEB_TRANSITION) {
644 dev_err(&card->gdev->dev,
645 "Interface %s is down because the "
646 "adjacent port is no longer in "
647 "reflective relay mode\n",
648 QETH_CARD_IFNAME(card));
649 qeth_close_dev(card);
651 dev_warn(&card->gdev->dev,
652 "The link for interface %s on CHPID"
654 QETH_CARD_IFNAME(card),
656 qeth_issue_ipa_msg(cmd,
657 cmd->hdr.return_code, card);
659 card->lan_online = 0;
660 netif_carrier_off(card->dev);
662 case IPA_CMD_STARTLAN:
663 dev_info(&card->gdev->dev,
664 "The link for %s on CHPID 0x%X has"
666 QETH_CARD_IFNAME(card),
668 netif_carrier_on(card->dev);
669 card->lan_online = 1;
670 if (card->info.hwtrap)
671 card->info.hwtrap = 2;
672 qeth_schedule_recovery(card);
674 case IPA_CMD_SETBRIDGEPORT_IQD:
675 case IPA_CMD_SETBRIDGEPORT_OSA:
676 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
677 if (card->discipline->control_event_handler
682 case IPA_CMD_MODCCID:
684 case IPA_CMD_REGISTER_LOCAL_ADDR:
685 QETH_CARD_TEXT(card, 3, "irla");
687 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
688 QETH_CARD_TEXT(card, 3, "urla");
691 QETH_DBF_MESSAGE(2, "Received data is IPA "
692 "but not a reply!\n");
700 void qeth_clear_ipacmd_list(struct qeth_card *card)
702 struct qeth_reply *reply, *r;
705 QETH_CARD_TEXT(card, 4, "clipalst");
707 spin_lock_irqsave(&card->lock, flags);
708 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
709 qeth_get_reply(reply);
711 atomic_inc(&reply->received);
712 list_del_init(&reply->list);
713 wake_up(&reply->wait_q);
714 qeth_put_reply(reply);
716 spin_unlock_irqrestore(&card->lock, flags);
718 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
720 static int qeth_check_idx_response(struct qeth_card *card,
721 unsigned char *buffer)
726 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
727 if ((buffer[2] & 0xc0) == 0xc0) {
728 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n",
730 QETH_CARD_TEXT(card, 2, "ckidxres");
731 QETH_CARD_TEXT(card, 2, " idxterm");
732 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
733 if (buffer[4] == 0xf6) {
734 dev_err(&card->gdev->dev,
735 "The qeth device is not configured "
736 "for the OSI layer required by z/VM\n");
744 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
746 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
747 dev_get_drvdata(&cdev->dev))->dev);
751 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
755 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
756 index = channel->io_buf_no;
758 if (channel->iob[index].state == BUF_STATE_FREE) {
759 channel->iob[index].state = BUF_STATE_LOCKED;
760 channel->io_buf_no = (channel->io_buf_no + 1) %
762 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
763 return channel->iob + index;
765 index = (index + 1) % QETH_CMD_BUFFER_NO;
766 } while (index != channel->io_buf_no);
771 void qeth_release_buffer(struct qeth_channel *channel,
772 struct qeth_cmd_buffer *iob)
776 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
777 spin_lock_irqsave(&channel->iob_lock, flags);
778 memset(iob->data, 0, QETH_BUFSIZE);
779 iob->state = BUF_STATE_FREE;
780 iob->callback = qeth_send_control_data_cb;
782 spin_unlock_irqrestore(&channel->iob_lock, flags);
783 wake_up(&channel->wait_q);
785 EXPORT_SYMBOL_GPL(qeth_release_buffer);
787 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
789 struct qeth_cmd_buffer *buffer = NULL;
792 spin_lock_irqsave(&channel->iob_lock, flags);
793 buffer = __qeth_get_buffer(channel);
794 spin_unlock_irqrestore(&channel->iob_lock, flags);
798 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
800 struct qeth_cmd_buffer *buffer;
801 wait_event(channel->wait_q,
802 ((buffer = qeth_get_buffer(channel)) != NULL));
805 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
807 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
811 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
812 qeth_release_buffer(channel, &channel->iob[cnt]);
813 channel->io_buf_no = 0;
815 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
817 static void qeth_send_control_data_cb(struct qeth_channel *channel,
818 struct qeth_cmd_buffer *iob)
820 struct qeth_card *card;
821 struct qeth_reply *reply, *r;
822 struct qeth_ipa_cmd *cmd;
827 card = CARD_FROM_CDEV(channel->ccwdev);
828 QETH_CARD_TEXT(card, 4, "sndctlcb");
829 rc = qeth_check_idx_response(card, iob->data);
834 qeth_clear_ipacmd_list(card);
835 qeth_schedule_recovery(card);
841 cmd = qeth_check_ipa_data(card, iob);
842 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
844 /*in case of OSN : check if cmd is set */
845 if (card->info.type == QETH_CARD_TYPE_OSN &&
847 cmd->hdr.command != IPA_CMD_STARTLAN &&
848 card->osn_info.assist_cb != NULL) {
849 card->osn_info.assist_cb(card->dev, cmd);
853 spin_lock_irqsave(&card->lock, flags);
854 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
855 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
856 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
857 qeth_get_reply(reply);
858 list_del_init(&reply->list);
859 spin_unlock_irqrestore(&card->lock, flags);
861 if (reply->callback != NULL) {
863 reply->offset = (__u16)((char *)cmd -
865 keep_reply = reply->callback(card,
869 keep_reply = reply->callback(card,
874 reply->rc = (u16) cmd->hdr.return_code;
878 spin_lock_irqsave(&card->lock, flags);
879 list_add_tail(&reply->list,
880 &card->cmd_waiter_list);
881 spin_unlock_irqrestore(&card->lock, flags);
883 atomic_inc(&reply->received);
884 wake_up(&reply->wait_q);
886 qeth_put_reply(reply);
890 spin_unlock_irqrestore(&card->lock, flags);
892 memcpy(&card->seqno.pdu_hdr_ack,
893 QETH_PDU_HEADER_SEQ_NO(iob->data),
895 qeth_release_buffer(channel, iob);
898 static int qeth_set_thread_start_bit(struct qeth_card *card,
899 unsigned long thread)
903 spin_lock_irqsave(&card->thread_mask_lock, flags);
904 if (!(card->thread_allowed_mask & thread) ||
905 (card->thread_start_mask & thread)) {
906 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
909 card->thread_start_mask |= thread;
910 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
914 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
918 spin_lock_irqsave(&card->thread_mask_lock, flags);
919 card->thread_start_mask &= ~thread;
920 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
921 wake_up(&card->wait_q);
923 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
925 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
929 spin_lock_irqsave(&card->thread_mask_lock, flags);
930 card->thread_running_mask &= ~thread;
931 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
932 wake_up_all(&card->wait_q);
934 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
936 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
941 spin_lock_irqsave(&card->thread_mask_lock, flags);
942 if (card->thread_start_mask & thread) {
943 if ((card->thread_allowed_mask & thread) &&
944 !(card->thread_running_mask & thread)) {
946 card->thread_start_mask &= ~thread;
947 card->thread_running_mask |= thread;
951 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
955 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
959 wait_event(card->wait_q,
960 (rc = __qeth_do_run_thread(card, thread)) >= 0);
963 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
965 void qeth_schedule_recovery(struct qeth_card *card)
967 QETH_CARD_TEXT(card, 2, "startrec");
968 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
969 schedule_work(&card->kernel_thread_starter);
971 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
973 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
977 struct qeth_card *card;
979 sense = (char *) irb->ecw;
980 cstat = irb->scsw.cmd.cstat;
981 dstat = irb->scsw.cmd.dstat;
982 card = CARD_FROM_CDEV(cdev);
984 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
985 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
986 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
987 QETH_CARD_TEXT(card, 2, "CGENCHK");
988 dev_warn(&cdev->dev, "The qeth device driver "
989 "failed to recover an error on the device\n");
990 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
991 dev_name(&cdev->dev), dstat, cstat);
992 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
997 if (dstat & DEV_STAT_UNIT_CHECK) {
998 if (sense[SENSE_RESETTING_EVENT_BYTE] &
999 SENSE_RESETTING_EVENT_FLAG) {
1000 QETH_CARD_TEXT(card, 2, "REVIND");
1003 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1004 SENSE_COMMAND_REJECT_FLAG) {
1005 QETH_CARD_TEXT(card, 2, "CMDREJi");
1008 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1009 QETH_CARD_TEXT(card, 2, "AFFE");
1012 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1013 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1016 QETH_CARD_TEXT(card, 2, "DGENCHK");
1022 static long __qeth_check_irb_error(struct ccw_device *cdev,
1023 unsigned long intparm, struct irb *irb)
1025 struct qeth_card *card;
1027 card = CARD_FROM_CDEV(cdev);
1029 if (!card || !IS_ERR(irb))
1032 switch (PTR_ERR(irb)) {
1034 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1035 dev_name(&cdev->dev));
1036 QETH_CARD_TEXT(card, 2, "ckirberr");
1037 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1040 dev_warn(&cdev->dev, "A hardware operation timed out"
1041 " on the device\n");
1042 QETH_CARD_TEXT(card, 2, "ckirberr");
1043 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1044 if (intparm == QETH_RCD_PARM) {
1045 if (card->data.ccwdev == cdev) {
1046 card->data.state = CH_STATE_DOWN;
1047 wake_up(&card->wait_q);
1052 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1053 dev_name(&cdev->dev), PTR_ERR(irb));
1054 QETH_CARD_TEXT(card, 2, "ckirberr");
1055 QETH_CARD_TEXT(card, 2, " rc???");
1057 return PTR_ERR(irb);
1060 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1065 struct qeth_cmd_buffer *iob = NULL;
1066 struct qeth_channel *channel;
1067 struct qeth_card *card;
1069 card = CARD_FROM_CDEV(cdev);
1073 QETH_CARD_TEXT(card, 5, "irq");
1075 if (card->read.ccwdev == cdev) {
1076 channel = &card->read;
1077 QETH_CARD_TEXT(card, 5, "read");
1078 } else if (card->write.ccwdev == cdev) {
1079 channel = &card->write;
1080 QETH_CARD_TEXT(card, 5, "write");
1082 channel = &card->data;
1083 QETH_CARD_TEXT(card, 5, "data");
1086 if (qeth_intparm_is_iob(intparm))
1087 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1089 if (__qeth_check_irb_error(cdev, intparm, irb)) {
1090 /* IO was terminated, free its resources. */
1092 qeth_release_buffer(iob->channel, iob);
1093 atomic_set(&channel->irq_pending, 0);
1094 wake_up(&card->wait_q);
1098 atomic_set(&channel->irq_pending, 0);
1100 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1101 channel->state = CH_STATE_STOPPED;
1103 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1104 channel->state = CH_STATE_HALTED;
1106 /*let's wake up immediately on data channel*/
1107 if ((channel == &card->data) && (intparm != 0) &&
1108 (intparm != QETH_RCD_PARM))
1111 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1112 QETH_CARD_TEXT(card, 6, "clrchpar");
1113 /* we don't have to handle this further */
1116 if (intparm == QETH_HALT_CHANNEL_PARM) {
1117 QETH_CARD_TEXT(card, 6, "hltchpar");
1118 /* we don't have to handle this further */
1122 cstat = irb->scsw.cmd.cstat;
1123 dstat = irb->scsw.cmd.dstat;
1125 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1126 (dstat & DEV_STAT_UNIT_CHECK) ||
1128 if (irb->esw.esw0.erw.cons) {
1129 dev_warn(&channel->ccwdev->dev,
1130 "The qeth device driver failed to recover "
1131 "an error on the device\n");
1132 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1133 "0x%X dstat 0x%X\n",
1134 dev_name(&channel->ccwdev->dev), cstat, dstat);
1135 print_hex_dump(KERN_WARNING, "qeth: irb ",
1136 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1137 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1138 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1140 if (intparm == QETH_RCD_PARM) {
1141 channel->state = CH_STATE_DOWN;
1144 rc = qeth_get_problem(cdev, irb);
1146 card->read_or_write_problem = 1;
1148 qeth_release_buffer(iob->channel, iob);
1149 qeth_clear_ipacmd_list(card);
1150 qeth_schedule_recovery(card);
1155 if (intparm == QETH_RCD_PARM) {
1156 channel->state = CH_STATE_RCD_DONE;
1159 if (channel == &card->data)
1161 if (channel == &card->read &&
1162 channel->state == CH_STATE_UP)
1163 __qeth_issue_next_read(card);
1165 if (iob && iob->callback)
1166 iob->callback(iob->channel, iob);
1169 wake_up(&card->wait_q);
1173 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1174 struct qeth_qdio_out_buffer *buf,
1175 enum iucv_tx_notify notification)
1177 struct sk_buff *skb;
1179 if (skb_queue_empty(&buf->skb_list))
1181 skb = skb_peek(&buf->skb_list);
1183 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1184 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1185 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1187 struct iucv_sock *iucv = iucv_sk(skb->sk);
1188 iucv->sk_txnotify(skb, notification);
1191 if (skb_queue_is_last(&buf->skb_list, skb))
1194 skb = skb_queue_next(&buf->skb_list, skb);
1200 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1202 struct sk_buff *skb;
1203 struct iucv_sock *iucv;
1204 int notify_general_error = 0;
1206 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1207 notify_general_error = 1;
1209 /* release may never happen from within CQ tasklet scope */
1210 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1212 skb = skb_dequeue(&buf->skb_list);
1214 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1215 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1216 if (notify_general_error &&
1217 be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1219 iucv = iucv_sk(skb->sk);
1220 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1223 refcount_dec(&skb->users);
1224 dev_kfree_skb_any(skb);
1225 skb = skb_dequeue(&buf->skb_list);
1229 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1230 struct qeth_qdio_out_buffer *buf)
1234 /* is PCI flag set on buffer? */
1235 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1236 atomic_dec(&queue->set_pci_flags_count);
1238 qeth_release_skbs(buf);
1240 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1241 if (buf->buffer->element[i].addr && buf->is_header[i])
1242 kmem_cache_free(qeth_core_header_cache,
1243 buf->buffer->element[i].addr);
1244 buf->is_header[i] = 0;
1247 qeth_scrub_qdio_buffer(buf->buffer,
1248 QETH_MAX_BUFFER_ELEMENTS(queue->card));
1249 buf->next_element_to_fill = 0;
1250 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1253 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1257 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1260 qeth_cleanup_handled_pending(q, j, 1);
1261 qeth_clear_output_buffer(q, q->bufs[j]);
1263 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1269 void qeth_clear_qdio_buffers(struct qeth_card *card)
1273 QETH_CARD_TEXT(card, 2, "clearqdbf");
1274 /* clear outbound buffers to free skbs */
1275 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1276 if (card->qdio.out_qs[i]) {
1277 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1281 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1283 static void qeth_free_buffer_pool(struct qeth_card *card)
1285 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1287 list_for_each_entry_safe(pool_entry, tmp,
1288 &card->qdio.init_pool.entry_list, init_list){
1289 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1290 free_page((unsigned long)pool_entry->elements[i]);
1291 list_del(&pool_entry->init_list);
1296 static void qeth_clean_channel(struct qeth_channel *channel)
1298 struct ccw_device *cdev = channel->ccwdev;
1301 QETH_DBF_TEXT(SETUP, 2, "freech");
1303 spin_lock_irq(get_ccwdev_lock(cdev));
1304 cdev->handler = NULL;
1305 spin_unlock_irq(get_ccwdev_lock(cdev));
1307 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1308 kfree(channel->iob[cnt].data);
1309 kfree(channel->ccw);
1312 static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers)
1314 struct ccw_device *cdev = channel->ccwdev;
1317 QETH_DBF_TEXT(SETUP, 2, "setupch");
1319 channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
1322 channel->state = CH_STATE_DOWN;
1323 atomic_set(&channel->irq_pending, 0);
1324 init_waitqueue_head(&channel->wait_q);
1326 spin_lock_irq(get_ccwdev_lock(cdev));
1327 cdev->handler = qeth_irq;
1328 spin_unlock_irq(get_ccwdev_lock(cdev));
1333 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
1334 channel->iob[cnt].data =
1335 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
1336 if (channel->iob[cnt].data == NULL)
1338 channel->iob[cnt].state = BUF_STATE_FREE;
1339 channel->iob[cnt].channel = channel;
1340 channel->iob[cnt].callback = qeth_send_control_data_cb;
1341 channel->iob[cnt].rc = 0;
1343 if (cnt < QETH_CMD_BUFFER_NO) {
1344 qeth_clean_channel(channel);
1347 channel->io_buf_no = 0;
1348 spin_lock_init(&channel->iob_lock);
1353 static void qeth_set_single_write_queues(struct qeth_card *card)
1355 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1356 (card->qdio.no_out_queues == 4))
1357 qeth_free_qdio_buffers(card);
1359 card->qdio.no_out_queues = 1;
1360 if (card->qdio.default_out_queue != 0)
1361 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1363 card->qdio.default_out_queue = 0;
1366 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1368 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1369 (card->qdio.no_out_queues == 1)) {
1370 qeth_free_qdio_buffers(card);
1371 card->qdio.default_out_queue = 2;
1373 card->qdio.no_out_queues = 4;
1376 static int qeth_update_from_chp_desc(struct qeth_card *card)
1378 struct ccw_device *ccwdev;
1379 struct channel_path_desc_fmt0 *chp_dsc;
1381 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1383 ccwdev = card->data.ccwdev;
1384 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1388 card->info.func_level = 0x4100 + chp_dsc->desc;
1389 if (card->info.type == QETH_CARD_TYPE_IQD)
1392 /* CHPP field bit 6 == 1 -> single queue */
1393 if ((chp_dsc->chpp & 0x02) == 0x02)
1394 qeth_set_single_write_queues(card);
1396 qeth_set_multiple_write_queues(card);
1399 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1400 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1404 static void qeth_init_qdio_info(struct qeth_card *card)
1406 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1407 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1408 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1409 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1410 card->qdio.no_out_queues = QETH_MAX_QUEUES;
1413 card->qdio.no_in_queues = 1;
1414 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1415 if (card->info.type == QETH_CARD_TYPE_IQD)
1416 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1418 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1419 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1420 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1421 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1424 static void qeth_set_initial_options(struct qeth_card *card)
1426 card->options.route4.type = NO_ROUTER;
1427 card->options.route6.type = NO_ROUTER;
1428 card->options.rx_sg_cb = QETH_RX_SG_CB;
1429 card->options.isolation = ISOLATION_MODE_NONE;
1430 card->options.cq = QETH_CQ_DISABLED;
1433 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1435 unsigned long flags;
1438 spin_lock_irqsave(&card->thread_mask_lock, flags);
1439 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1440 (u8) card->thread_start_mask,
1441 (u8) card->thread_allowed_mask,
1442 (u8) card->thread_running_mask);
1443 rc = (card->thread_start_mask & thread);
1444 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1448 static void qeth_start_kernel_thread(struct work_struct *work)
1450 struct task_struct *ts;
1451 struct qeth_card *card = container_of(work, struct qeth_card,
1452 kernel_thread_starter);
1453 QETH_CARD_TEXT(card , 2, "strthrd");
1455 if (card->read.state != CH_STATE_UP &&
1456 card->write.state != CH_STATE_UP)
1458 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1459 ts = kthread_run(card->discipline->recover, (void *)card,
1462 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1463 qeth_clear_thread_running_bit(card,
1464 QETH_RECOVER_THREAD);
1469 static void qeth_buffer_reclaim_work(struct work_struct *);
1470 static void qeth_setup_card(struct qeth_card *card)
1472 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1473 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1475 card->info.type = CARD_RDEV(card)->id.driver_info;
1476 card->state = CARD_STATE_DOWN;
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 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1485 INIT_LIST_HEAD(&card->cmd_waiter_list);
1486 init_waitqueue_head(&card->wait_q);
1487 qeth_set_initial_options(card);
1488 /* IP address takeover */
1489 INIT_LIST_HEAD(&card->ipato.entries);
1490 qeth_init_qdio_info(card);
1491 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1492 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1495 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1497 struct qeth_card *card = container_of(slr, struct qeth_card,
1498 qeth_service_level);
1499 if (card->info.mcl_level[0])
1500 seq_printf(m, "qeth: %s firmware level %s\n",
1501 CARD_BUS_ID(card), card->info.mcl_level);
1504 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1506 struct qeth_card *card;
1508 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1509 card = kzalloc(sizeof(*card), GFP_KERNEL);
1512 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1515 CARD_RDEV(card) = gdev->cdev[0];
1516 CARD_WDEV(card) = gdev->cdev[1];
1517 CARD_DDEV(card) = gdev->cdev[2];
1518 if (qeth_setup_channel(&card->read, true))
1520 if (qeth_setup_channel(&card->write, true))
1522 if (qeth_setup_channel(&card->data, false))
1524 card->options.layer2 = -1;
1525 card->qeth_service_level.seq_print = qeth_core_sl_print;
1526 register_service_level(&card->qeth_service_level);
1530 qeth_clean_channel(&card->write);
1532 qeth_clean_channel(&card->read);
1539 static int qeth_clear_channel(struct qeth_channel *channel)
1541 unsigned long flags;
1542 struct qeth_card *card;
1545 card = CARD_FROM_CDEV(channel->ccwdev);
1546 QETH_CARD_TEXT(card, 3, "clearch");
1547 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1548 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1549 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1553 rc = wait_event_interruptible_timeout(card->wait_q,
1554 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1555 if (rc == -ERESTARTSYS)
1557 if (channel->state != CH_STATE_STOPPED)
1559 channel->state = CH_STATE_DOWN;
1563 static int qeth_halt_channel(struct qeth_channel *channel)
1565 unsigned long flags;
1566 struct qeth_card *card;
1569 card = CARD_FROM_CDEV(channel->ccwdev);
1570 QETH_CARD_TEXT(card, 3, "haltch");
1571 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1572 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1573 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1577 rc = wait_event_interruptible_timeout(card->wait_q,
1578 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1579 if (rc == -ERESTARTSYS)
1581 if (channel->state != CH_STATE_HALTED)
1586 static int qeth_halt_channels(struct qeth_card *card)
1588 int rc1 = 0, rc2 = 0, rc3 = 0;
1590 QETH_CARD_TEXT(card, 3, "haltchs");
1591 rc1 = qeth_halt_channel(&card->read);
1592 rc2 = qeth_halt_channel(&card->write);
1593 rc3 = qeth_halt_channel(&card->data);
1601 static int qeth_clear_channels(struct qeth_card *card)
1603 int rc1 = 0, rc2 = 0, rc3 = 0;
1605 QETH_CARD_TEXT(card, 3, "clearchs");
1606 rc1 = qeth_clear_channel(&card->read);
1607 rc2 = qeth_clear_channel(&card->write);
1608 rc3 = qeth_clear_channel(&card->data);
1616 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1620 QETH_CARD_TEXT(card, 3, "clhacrd");
1623 rc = qeth_halt_channels(card);
1626 return qeth_clear_channels(card);
1629 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1633 QETH_CARD_TEXT(card, 3, "qdioclr");
1634 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1635 QETH_QDIO_CLEANING)) {
1636 case QETH_QDIO_ESTABLISHED:
1637 if (card->info.type == QETH_CARD_TYPE_IQD)
1638 rc = qdio_shutdown(CARD_DDEV(card),
1639 QDIO_FLAG_CLEANUP_USING_HALT);
1641 rc = qdio_shutdown(CARD_DDEV(card),
1642 QDIO_FLAG_CLEANUP_USING_CLEAR);
1644 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1645 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1647 case QETH_QDIO_CLEANING:
1652 rc = qeth_clear_halt_card(card, use_halt);
1654 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1655 card->state = CARD_STATE_DOWN;
1658 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1660 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1666 struct qeth_channel *channel = &card->data;
1667 unsigned long flags;
1670 * scan for RCD command in extended SenseID data
1672 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1673 if (!ciw || ciw->cmd == 0)
1675 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1679 qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf);
1680 channel->state = CH_STATE_RCD;
1681 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1682 ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1683 QETH_RCD_PARM, LPM_ANYPATH, 0,
1685 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1687 wait_event(card->wait_q,
1688 (channel->state == CH_STATE_RCD_DONE ||
1689 channel->state == CH_STATE_DOWN));
1690 if (channel->state == CH_STATE_DOWN)
1693 channel->state = CH_STATE_DOWN;
1699 *length = ciw->count;
1705 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1707 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1708 card->info.chpid = prcd[30];
1709 card->info.unit_addr2 = prcd[31];
1710 card->info.cula = prcd[63];
1711 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1712 (prcd[0x11] == _ascebc['M']));
1715 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1717 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1718 struct diag26c_vnic_resp *response = NULL;
1719 struct diag26c_vnic_req *request = NULL;
1720 struct ccw_dev_id id;
1724 QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1726 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1730 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1731 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1732 if (!request || !response) {
1737 ccw_device_get_id(CARD_RDEV(card), &id);
1738 request->resp_buf_len = sizeof(*response);
1739 request->resp_version = DIAG26C_VERSION6_VM65918;
1740 request->req_format = DIAG26C_VNIC_INFO;
1742 memcpy(&request->sys_name, userid, 8);
1743 request->devno = id.devno;
1745 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1746 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1747 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1750 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1752 if (request->resp_buf_len < sizeof(*response) ||
1753 response->version != request->resp_version) {
1758 if (response->protocol == VNIC_INFO_PROT_L2)
1759 disc = QETH_DISCIPLINE_LAYER2;
1760 else if (response->protocol == VNIC_INFO_PROT_L3)
1761 disc = QETH_DISCIPLINE_LAYER3;
1767 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1771 /* Determine whether the device requires a specific layer discipline */
1772 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1774 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1776 if (card->info.type == QETH_CARD_TYPE_OSM ||
1777 card->info.type == QETH_CARD_TYPE_OSN)
1778 disc = QETH_DISCIPLINE_LAYER2;
1779 else if (card->info.guestlan)
1780 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1781 QETH_DISCIPLINE_LAYER3 :
1782 qeth_vm_detect_layer(card);
1785 case QETH_DISCIPLINE_LAYER2:
1786 QETH_DBF_TEXT(SETUP, 3, "force l2");
1788 case QETH_DISCIPLINE_LAYER3:
1789 QETH_DBF_TEXT(SETUP, 3, "force l3");
1792 QETH_DBF_TEXT(SETUP, 3, "force no");
1798 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1800 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1802 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1803 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1804 card->info.blkt.time_total = 0;
1805 card->info.blkt.inter_packet = 0;
1806 card->info.blkt.inter_packet_jumbo = 0;
1808 card->info.blkt.time_total = 250;
1809 card->info.blkt.inter_packet = 5;
1810 card->info.blkt.inter_packet_jumbo = 15;
1814 static void qeth_init_tokens(struct qeth_card *card)
1816 card->token.issuer_rm_w = 0x00010103UL;
1817 card->token.cm_filter_w = 0x00010108UL;
1818 card->token.cm_connection_w = 0x0001010aUL;
1819 card->token.ulp_filter_w = 0x0001010bUL;
1820 card->token.ulp_connection_w = 0x0001010dUL;
1823 static void qeth_init_func_level(struct qeth_card *card)
1825 switch (card->info.type) {
1826 case QETH_CARD_TYPE_IQD:
1827 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1829 case QETH_CARD_TYPE_OSD:
1830 case QETH_CARD_TYPE_OSN:
1831 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1838 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1839 void (*idx_reply_cb)(struct qeth_channel *,
1840 struct qeth_cmd_buffer *))
1842 struct qeth_cmd_buffer *iob;
1843 unsigned long flags;
1845 struct qeth_card *card;
1847 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1848 card = CARD_FROM_CDEV(channel->ccwdev);
1849 iob = qeth_get_buffer(channel);
1852 iob->callback = idx_reply_cb;
1853 qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data);
1855 wait_event(card->wait_q,
1856 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1857 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1858 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1859 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1860 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1861 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1864 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1865 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1866 atomic_set(&channel->irq_pending, 0);
1867 qeth_release_buffer(channel, iob);
1868 wake_up(&card->wait_q);
1871 rc = wait_event_interruptible_timeout(card->wait_q,
1872 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1873 if (rc == -ERESTARTSYS)
1875 if (channel->state != CH_STATE_UP) {
1877 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1883 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1884 void (*idx_reply_cb)(struct qeth_channel *,
1885 struct qeth_cmd_buffer *))
1887 struct qeth_card *card;
1888 struct qeth_cmd_buffer *iob;
1889 unsigned long flags;
1893 struct ccw_dev_id temp_devid;
1895 card = CARD_FROM_CDEV(channel->ccwdev);
1897 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1899 iob = qeth_get_buffer(channel);
1902 iob->callback = idx_reply_cb;
1903 qeth_setup_ccw(channel->ccw, CCW_CMD_WRITE, IDX_ACTIVATE_SIZE,
1905 if (channel == &card->write) {
1906 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1907 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1908 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1909 card->seqno.trans_hdr++;
1911 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1912 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1913 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1915 tmp = ((u8)card->dev->dev_port) | 0x80;
1916 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1917 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1918 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1919 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1920 &card->info.func_level, sizeof(__u16));
1921 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1922 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1923 temp = (card->info.cula << 8) + card->info.unit_addr2;
1924 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1926 wait_event(card->wait_q,
1927 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1928 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1929 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1930 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1931 (addr_t) iob, 0, 0, QETH_TIMEOUT);
1932 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1935 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1937 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1938 atomic_set(&channel->irq_pending, 0);
1939 qeth_release_buffer(channel, iob);
1940 wake_up(&card->wait_q);
1943 rc = wait_event_interruptible_timeout(card->wait_q,
1944 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1945 if (rc == -ERESTARTSYS)
1947 if (channel->state != CH_STATE_ACTIVATING) {
1948 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1949 " failed to recover an error on the device\n");
1950 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1951 dev_name(&channel->ccwdev->dev));
1952 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1955 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1958 static int qeth_peer_func_level(int level)
1960 if ((level & 0xff) == 8)
1961 return (level & 0xff) + 0x400;
1962 if (((level >> 8) & 3) == 1)
1963 return (level & 0xff) + 0x200;
1967 static void qeth_idx_write_cb(struct qeth_channel *channel,
1968 struct qeth_cmd_buffer *iob)
1970 struct qeth_card *card;
1973 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1975 if (channel->state == CH_STATE_DOWN) {
1976 channel->state = CH_STATE_ACTIVATING;
1979 card = CARD_FROM_CDEV(channel->ccwdev);
1981 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1982 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1983 dev_err(&channel->ccwdev->dev,
1984 "The adapter is used exclusively by another "
1987 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1988 " negative reply\n",
1989 dev_name(&channel->ccwdev->dev));
1992 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1993 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1994 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1995 "function level mismatch (sent: 0x%x, received: "
1996 "0x%x)\n", dev_name(&channel->ccwdev->dev),
1997 card->info.func_level, temp);
2000 channel->state = CH_STATE_UP;
2002 qeth_release_buffer(channel, iob);
2005 static void qeth_idx_read_cb(struct qeth_channel *channel,
2006 struct qeth_cmd_buffer *iob)
2008 struct qeth_card *card;
2011 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
2012 if (channel->state == CH_STATE_DOWN) {
2013 channel->state = CH_STATE_ACTIVATING;
2017 card = CARD_FROM_CDEV(channel->ccwdev);
2018 if (qeth_check_idx_response(card, iob->data))
2021 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
2022 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2023 case QETH_IDX_ACT_ERR_EXCL:
2024 dev_err(&channel->ccwdev->dev,
2025 "The adapter is used exclusively by another "
2028 case QETH_IDX_ACT_ERR_AUTH:
2029 case QETH_IDX_ACT_ERR_AUTH_USER:
2030 dev_err(&channel->ccwdev->dev,
2031 "Setting the device online failed because of "
2032 "insufficient authorization\n");
2035 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2036 " negative reply\n",
2037 dev_name(&channel->ccwdev->dev));
2039 QETH_CARD_TEXT_(card, 2, "idxread%c",
2040 QETH_IDX_ACT_CAUSE_CODE(iob->data));
2044 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2045 if (temp != qeth_peer_func_level(card->info.func_level)) {
2046 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2047 "level mismatch (sent: 0x%x, received: 0x%x)\n",
2048 dev_name(&channel->ccwdev->dev),
2049 card->info.func_level, temp);
2052 memcpy(&card->token.issuer_rm_r,
2053 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2054 QETH_MPC_TOKEN_LENGTH);
2055 memcpy(&card->info.mcl_level[0],
2056 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2057 channel->state = CH_STATE_UP;
2059 qeth_release_buffer(channel, iob);
2062 void qeth_prepare_control_data(struct qeth_card *card, int len,
2063 struct qeth_cmd_buffer *iob)
2065 qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, len, iob->data);
2066 iob->callback = qeth_release_buffer;
2068 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2069 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2070 card->seqno.trans_hdr++;
2071 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2072 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2073 card->seqno.pdu_hdr++;
2074 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2075 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2076 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2078 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2081 * qeth_send_control_data() - send control command to the card
2082 * @card: qeth_card structure pointer
2083 * @len: size of the command buffer
2084 * @iob: qeth_cmd_buffer pointer
2085 * @reply_cb: callback function pointer
2086 * @cb_card: pointer to the qeth_card structure
2087 * @cb_reply: pointer to the qeth_reply structure
2088 * @cb_cmd: pointer to the original iob for non-IPA
2089 * commands, or to the qeth_ipa_cmd structure
2090 * for the IPA commands.
2091 * @reply_param: private pointer passed to the callback
2093 * Returns the value of the `return_code' field of the response
2094 * block returned from the hardware, or other error indication.
2095 * Value of zero indicates successful execution of the command.
2097 * Callback function gets called one or more times, with cb_cmd
2098 * pointing to the response returned by the hardware. Callback
2099 * function must return non-zero if more reply blocks are expected,
2100 * and zero if the last or only reply block is received. Callback
2101 * function can get the value of the reply_param pointer from the
2102 * field 'param' of the structure qeth_reply.
2105 int qeth_send_control_data(struct qeth_card *card, int len,
2106 struct qeth_cmd_buffer *iob,
2107 int (*reply_cb)(struct qeth_card *cb_card,
2108 struct qeth_reply *cb_reply,
2109 unsigned long cb_cmd),
2112 struct qeth_channel *channel = iob->channel;
2114 unsigned long flags;
2115 struct qeth_reply *reply = NULL;
2116 unsigned long timeout, event_timeout;
2117 struct qeth_ipa_cmd *cmd = NULL;
2119 QETH_CARD_TEXT(card, 2, "sendctl");
2121 if (card->read_or_write_problem) {
2122 qeth_release_buffer(channel, iob);
2125 reply = qeth_alloc_reply(card);
2127 qeth_release_buffer(channel, iob);
2130 reply->callback = reply_cb;
2131 reply->param = reply_param;
2133 init_waitqueue_head(&reply->wait_q);
2135 while (atomic_cmpxchg(&channel->irq_pending, 0, 1)) ;
2137 if (IS_IPA(iob->data)) {
2138 cmd = __ipa_cmd(iob);
2139 cmd->hdr.seqno = card->seqno.ipa++;
2140 reply->seqno = cmd->hdr.seqno;
2141 event_timeout = QETH_IPA_TIMEOUT;
2143 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2144 event_timeout = QETH_TIMEOUT;
2146 qeth_prepare_control_data(card, len, iob);
2148 spin_lock_irqsave(&card->lock, flags);
2149 list_add_tail(&reply->list, &card->cmd_waiter_list);
2150 spin_unlock_irqrestore(&card->lock, flags);
2152 timeout = jiffies + event_timeout;
2154 QETH_CARD_TEXT(card, 6, "noirqpnd");
2155 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
2156 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
2157 (addr_t) iob, 0, 0, event_timeout);
2158 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
2160 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2161 "ccw_device_start rc = %i\n",
2162 dev_name(&channel->ccwdev->dev), rc);
2163 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2164 spin_lock_irqsave(&card->lock, flags);
2165 list_del_init(&reply->list);
2166 qeth_put_reply(reply);
2167 spin_unlock_irqrestore(&card->lock, flags);
2168 qeth_release_buffer(channel, iob);
2169 atomic_set(&channel->irq_pending, 0);
2170 wake_up(&card->wait_q);
2174 /* we have only one long running ipassist, since we can ensure
2175 process context of this command we can sleep */
2176 if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2177 cmd->hdr.prot_version == QETH_PROT_IPV4) {
2178 if (!wait_event_timeout(reply->wait_q,
2179 atomic_read(&reply->received), event_timeout))
2182 while (!atomic_read(&reply->received)) {
2183 if (time_after(jiffies, timeout))
2190 qeth_put_reply(reply);
2195 spin_lock_irqsave(&reply->card->lock, flags);
2196 list_del_init(&reply->list);
2197 spin_unlock_irqrestore(&reply->card->lock, flags);
2198 atomic_inc(&reply->received);
2200 qeth_put_reply(reply);
2203 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2205 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2208 struct qeth_cmd_buffer *iob;
2210 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2212 iob = (struct qeth_cmd_buffer *) data;
2213 memcpy(&card->token.cm_filter_r,
2214 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2215 QETH_MPC_TOKEN_LENGTH);
2216 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2220 static int qeth_cm_enable(struct qeth_card *card)
2223 struct qeth_cmd_buffer *iob;
2225 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2227 iob = qeth_wait_for_buffer(&card->write);
2228 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2229 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2230 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2231 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2232 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2234 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2235 qeth_cm_enable_cb, NULL);
2239 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2243 struct qeth_cmd_buffer *iob;
2245 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2247 iob = (struct qeth_cmd_buffer *) data;
2248 memcpy(&card->token.cm_connection_r,
2249 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2250 QETH_MPC_TOKEN_LENGTH);
2251 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2255 static int qeth_cm_setup(struct qeth_card *card)
2258 struct qeth_cmd_buffer *iob;
2260 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2262 iob = qeth_wait_for_buffer(&card->write);
2263 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2264 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2265 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2266 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2267 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2268 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2269 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2270 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2271 qeth_cm_setup_cb, NULL);
2276 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2278 struct net_device *dev = card->dev;
2279 unsigned int new_mtu;
2282 /* IQD needs accurate max MTU to set up its RX buffers: */
2285 /* tolerate quirky HW: */
2286 max_mtu = ETH_MAX_MTU;
2291 /* move any device with default MTU to new max MTU: */
2292 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2294 /* adjust RX buffer size to new max MTU: */
2295 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2296 if (dev->max_mtu && dev->max_mtu != max_mtu)
2297 qeth_free_qdio_buffers(card);
2301 /* default MTUs for first setup: */
2302 else if (card->options.layer2)
2303 new_mtu = ETH_DATA_LEN;
2305 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2308 dev->max_mtu = max_mtu;
2309 dev->mtu = min(new_mtu, max_mtu);
2314 static int qeth_get_mtu_outof_framesize(int framesize)
2316 switch (framesize) {
2330 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2334 __u16 mtu, framesize;
2337 struct qeth_cmd_buffer *iob;
2339 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2341 iob = (struct qeth_cmd_buffer *) data;
2342 memcpy(&card->token.ulp_filter_r,
2343 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2344 QETH_MPC_TOKEN_LENGTH);
2345 if (card->info.type == QETH_CARD_TYPE_IQD) {
2346 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2347 mtu = qeth_get_mtu_outof_framesize(framesize);
2349 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2351 *(u16 *)reply->param = mtu;
2353 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2354 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2356 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2357 card->info.link_type = link_type;
2359 card->info.link_type = 0;
2360 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2361 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2365 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2368 return QETH_PROT_OSN2;
2369 return (card->options.layer2 == 1) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2372 static int qeth_ulp_enable(struct qeth_card *card)
2374 u8 prot_type = qeth_mpc_select_prot_type(card);
2375 struct qeth_cmd_buffer *iob;
2379 /*FIXME: trace view callbacks*/
2380 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2382 iob = qeth_wait_for_buffer(&card->write);
2383 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2385 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2386 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2387 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2388 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2389 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2390 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2391 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2392 qeth_ulp_enable_cb, &max_mtu);
2395 return qeth_update_max_mtu(card, max_mtu);
2398 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2401 struct qeth_cmd_buffer *iob;
2403 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2405 iob = (struct qeth_cmd_buffer *) data;
2406 memcpy(&card->token.ulp_connection_r,
2407 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2408 QETH_MPC_TOKEN_LENGTH);
2409 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2411 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2412 dev_err(&card->gdev->dev, "A connection could not be "
2413 "established because of an OLM limit\n");
2416 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2420 static int qeth_ulp_setup(struct qeth_card *card)
2424 struct qeth_cmd_buffer *iob;
2425 struct ccw_dev_id dev_id;
2427 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2429 iob = qeth_wait_for_buffer(&card->write);
2430 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2432 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2433 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2434 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2435 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2436 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2437 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2439 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2440 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2441 temp = (card->info.cula << 8) + card->info.unit_addr2;
2442 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2443 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2444 qeth_ulp_setup_cb, NULL);
2448 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2450 struct qeth_qdio_out_buffer *newbuf;
2452 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2456 newbuf->buffer = q->qdio_bufs[bidx];
2457 skb_queue_head_init(&newbuf->skb_list);
2458 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2460 newbuf->next_pending = q->bufs[bidx];
2461 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2462 q->bufs[bidx] = newbuf;
2466 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2471 qeth_clear_outq_buffers(q, 1);
2472 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2476 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2478 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2483 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2490 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2494 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2496 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2497 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2500 QETH_DBF_TEXT(SETUP, 2, "inq");
2501 card->qdio.in_q = qeth_alloc_qdio_queue();
2502 if (!card->qdio.in_q)
2505 /* inbound buffer pool */
2506 if (qeth_alloc_buffer_pool(card))
2511 kcalloc(card->qdio.no_out_queues,
2512 sizeof(struct qeth_qdio_out_q *),
2514 if (!card->qdio.out_qs)
2516 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2517 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2518 if (!card->qdio.out_qs[i])
2520 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2521 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2522 card->qdio.out_qs[i]->queue_no = i;
2523 /* give outbound qeth_qdio_buffers their qdio_buffers */
2524 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2525 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2526 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2527 goto out_freeoutqbufs;
2532 if (qeth_alloc_cq(card))
2540 kmem_cache_free(qeth_qdio_outbuf_cache,
2541 card->qdio.out_qs[i]->bufs[j]);
2542 card->qdio.out_qs[i]->bufs[j] = NULL;
2546 qeth_free_output_queue(card->qdio.out_qs[--i]);
2547 kfree(card->qdio.out_qs);
2548 card->qdio.out_qs = NULL;
2550 qeth_free_buffer_pool(card);
2552 qeth_free_qdio_queue(card->qdio.in_q);
2553 card->qdio.in_q = NULL;
2555 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2559 static void qeth_free_qdio_buffers(struct qeth_card *card)
2563 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2564 QETH_QDIO_UNINITIALIZED)
2568 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2569 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2570 if (card->qdio.in_q->bufs[j].rx_skb)
2571 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2573 qeth_free_qdio_queue(card->qdio.in_q);
2574 card->qdio.in_q = NULL;
2575 /* inbound buffer pool */
2576 qeth_free_buffer_pool(card);
2577 /* free outbound qdio_qs */
2578 if (card->qdio.out_qs) {
2579 for (i = 0; i < card->qdio.no_out_queues; i++)
2580 qeth_free_output_queue(card->qdio.out_qs[i]);
2581 kfree(card->qdio.out_qs);
2582 card->qdio.out_qs = NULL;
2586 static void qeth_create_qib_param_field(struct qeth_card *card,
2590 param_field[0] = _ascebc['P'];
2591 param_field[1] = _ascebc['C'];
2592 param_field[2] = _ascebc['I'];
2593 param_field[3] = _ascebc['T'];
2594 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2595 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2596 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2599 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2602 param_field[16] = _ascebc['B'];
2603 param_field[17] = _ascebc['L'];
2604 param_field[18] = _ascebc['K'];
2605 param_field[19] = _ascebc['T'];
2606 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2607 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2608 *((unsigned int *) (¶m_field[28])) =
2609 card->info.blkt.inter_packet_jumbo;
2612 static int qeth_qdio_activate(struct qeth_card *card)
2614 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2615 return qdio_activate(CARD_DDEV(card));
2618 static int qeth_dm_act(struct qeth_card *card)
2621 struct qeth_cmd_buffer *iob;
2623 QETH_DBF_TEXT(SETUP, 2, "dmact");
2625 iob = qeth_wait_for_buffer(&card->write);
2626 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2628 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2629 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2630 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2631 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2632 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2636 static int qeth_mpc_initialize(struct qeth_card *card)
2640 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2642 rc = qeth_issue_next_read(card);
2644 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2647 rc = qeth_cm_enable(card);
2649 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2652 rc = qeth_cm_setup(card);
2654 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2657 rc = qeth_ulp_enable(card);
2659 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2662 rc = qeth_ulp_setup(card);
2664 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2667 rc = qeth_alloc_qdio_buffers(card);
2669 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2672 rc = qeth_qdio_establish(card);
2674 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2675 qeth_free_qdio_buffers(card);
2678 rc = qeth_qdio_activate(card);
2680 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2683 rc = qeth_dm_act(card);
2685 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2691 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2692 qdio_free(CARD_DDEV(card));
2696 void qeth_print_status_message(struct qeth_card *card)
2698 switch (card->info.type) {
2699 case QETH_CARD_TYPE_OSD:
2700 case QETH_CARD_TYPE_OSM:
2701 case QETH_CARD_TYPE_OSX:
2702 /* VM will use a non-zero first character
2703 * to indicate a HiperSockets like reporting
2704 * of the level OSA sets the first character to zero
2706 if (!card->info.mcl_level[0]) {
2707 sprintf(card->info.mcl_level, "%02x%02x",
2708 card->info.mcl_level[2],
2709 card->info.mcl_level[3]);
2713 case QETH_CARD_TYPE_IQD:
2714 if ((card->info.guestlan) ||
2715 (card->info.mcl_level[0] & 0x80)) {
2716 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2717 card->info.mcl_level[0]];
2718 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2719 card->info.mcl_level[1]];
2720 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2721 card->info.mcl_level[2]];
2722 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2723 card->info.mcl_level[3]];
2724 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2728 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2730 dev_info(&card->gdev->dev,
2731 "Device is a%s card%s%s%s\nwith link type %s.\n",
2732 qeth_get_cardname(card),
2733 (card->info.mcl_level[0]) ? " (level: " : "",
2734 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2735 (card->info.mcl_level[0]) ? ")" : "",
2736 qeth_get_cardname_short(card));
2738 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2740 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2742 struct qeth_buffer_pool_entry *entry;
2744 QETH_CARD_TEXT(card, 5, "inwrklst");
2746 list_for_each_entry(entry,
2747 &card->qdio.init_pool.entry_list, init_list) {
2748 qeth_put_buffer_pool_entry(card, entry);
2752 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2753 struct qeth_card *card)
2755 struct list_head *plh;
2756 struct qeth_buffer_pool_entry *entry;
2760 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2763 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2764 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2766 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2767 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2773 list_del_init(&entry->list);
2778 /* no free buffer in pool so take first one and swap pages */
2779 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2780 struct qeth_buffer_pool_entry, list);
2781 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2782 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2783 page = alloc_page(GFP_ATOMIC);
2787 free_page((unsigned long)entry->elements[i]);
2788 entry->elements[i] = page_address(page);
2789 if (card->options.performance_stats)
2790 card->perf_stats.sg_alloc_page_rx++;
2794 list_del_init(&entry->list);
2798 static int qeth_init_input_buffer(struct qeth_card *card,
2799 struct qeth_qdio_buffer *buf)
2801 struct qeth_buffer_pool_entry *pool_entry;
2804 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2805 buf->rx_skb = netdev_alloc_skb(card->dev,
2806 QETH_RX_PULL_LEN + ETH_HLEN);
2811 pool_entry = qeth_find_free_buffer_pool_entry(card);
2816 * since the buffer is accessed only from the input_tasklet
2817 * there shouldn't be a need to synchronize; also, since we use
2818 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2822 buf->pool_entry = pool_entry;
2823 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2824 buf->buffer->element[i].length = PAGE_SIZE;
2825 buf->buffer->element[i].addr = pool_entry->elements[i];
2826 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2827 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2829 buf->buffer->element[i].eflags = 0;
2830 buf->buffer->element[i].sflags = 0;
2835 int qeth_init_qdio_queues(struct qeth_card *card)
2840 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2843 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2844 memset(&card->rx, 0, sizeof(struct qeth_rx));
2846 qeth_initialize_working_pool_list(card);
2847 /*give only as many buffers to hardware as we have buffer pool entries*/
2848 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) {
2849 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2854 card->qdio.in_q->next_buf_to_init =
2855 card->qdio.in_buf_pool.buf_count - 1;
2856 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2857 card->qdio.in_buf_pool.buf_count - 1);
2859 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2864 rc = qeth_cq_init(card);
2869 /* outbound queue */
2870 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2871 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2872 QDIO_MAX_BUFFERS_PER_Q);
2873 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2874 qeth_clear_output_buffer(card->qdio.out_qs[i],
2875 card->qdio.out_qs[i]->bufs[j]);
2877 card->qdio.out_qs[i]->card = card;
2878 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2879 card->qdio.out_qs[i]->do_pack = 0;
2880 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2881 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2882 atomic_set(&card->qdio.out_qs[i]->state,
2883 QETH_OUT_Q_UNLOCKED);
2887 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2889 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2891 switch (link_type) {
2892 case QETH_LINK_TYPE_HSTR:
2899 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2900 struct qeth_ipa_cmd *cmd, __u8 command,
2901 enum qeth_prot_versions prot)
2903 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2904 cmd->hdr.command = command;
2905 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2906 /* cmd->hdr.seqno is set by qeth_send_control_data() */
2907 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2908 cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port;
2909 if (card->options.layer2)
2910 cmd->hdr.prim_version_no = 2;
2912 cmd->hdr.prim_version_no = 1;
2913 cmd->hdr.param_count = 1;
2914 cmd->hdr.prot_version = prot;
2915 cmd->hdr.ipa_supported = 0;
2916 cmd->hdr.ipa_enabled = 0;
2919 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2920 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2922 struct qeth_cmd_buffer *iob;
2924 iob = qeth_get_buffer(&card->write);
2926 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2928 dev_warn(&card->gdev->dev,
2929 "The qeth driver ran out of channel command buffers\n");
2930 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2931 dev_name(&card->gdev->dev));
2936 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2938 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob)
2940 u8 prot_type = qeth_mpc_select_prot_type(card);
2942 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2943 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2944 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2945 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2947 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2950 * qeth_send_ipa_cmd() - send an IPA command
2952 * See qeth_send_control_data() for explanation of the arguments.
2955 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2956 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2962 QETH_CARD_TEXT(card, 4, "sendipa");
2963 qeth_prepare_ipa_cmd(card, iob);
2964 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2965 iob, reply_cb, reply_param);
2967 qeth_clear_ipacmd_list(card);
2968 qeth_schedule_recovery(card);
2972 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2974 static int qeth_send_startlan(struct qeth_card *card)
2977 struct qeth_cmd_buffer *iob;
2979 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2981 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2984 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2988 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2990 if (!cmd->hdr.return_code)
2991 cmd->hdr.return_code =
2992 cmd->data.setadapterparms.hdr.return_code;
2993 return cmd->hdr.return_code;
2996 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2997 struct qeth_reply *reply, unsigned long data)
2999 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3001 QETH_CARD_TEXT(card, 3, "quyadpcb");
3002 if (qeth_setadpparms_inspect_rc(cmd))
3005 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3006 card->info.link_type =
3007 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3008 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3010 card->options.adp.supported_funcs =
3011 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3015 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3016 __u32 command, __u32 cmdlen)
3018 struct qeth_cmd_buffer *iob;
3019 struct qeth_ipa_cmd *cmd;
3021 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3024 cmd = __ipa_cmd(iob);
3025 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3026 cmd->data.setadapterparms.hdr.command_code = command;
3027 cmd->data.setadapterparms.hdr.used_total = 1;
3028 cmd->data.setadapterparms.hdr.seq_no = 1;
3034 static int qeth_query_setadapterparms(struct qeth_card *card)
3037 struct qeth_cmd_buffer *iob;
3039 QETH_CARD_TEXT(card, 3, "queryadp");
3040 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3041 sizeof(struct qeth_ipacmd_setadpparms));
3044 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3048 static int qeth_query_ipassists_cb(struct qeth_card *card,
3049 struct qeth_reply *reply, unsigned long data)
3051 struct qeth_ipa_cmd *cmd;
3053 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3055 cmd = (struct qeth_ipa_cmd *) data;
3057 switch (cmd->hdr.return_code) {
3058 case IPA_RC_NOTSUPP:
3059 case IPA_RC_L2_UNSUPPORTED_CMD:
3060 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3061 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3062 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3065 if (cmd->hdr.return_code) {
3066 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3068 dev_name(&card->gdev->dev),
3069 cmd->hdr.return_code);
3074 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3075 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3076 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3077 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3078 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3079 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3081 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3082 "\n", dev_name(&card->gdev->dev));
3086 static int qeth_query_ipassists(struct qeth_card *card,
3087 enum qeth_prot_versions prot)
3090 struct qeth_cmd_buffer *iob;
3092 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3093 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3096 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3100 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3101 struct qeth_reply *reply, unsigned long data)
3103 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3104 struct qeth_query_switch_attributes *attrs;
3105 struct qeth_switch_info *sw_info;
3107 QETH_CARD_TEXT(card, 2, "qswiatcb");
3108 if (qeth_setadpparms_inspect_rc(cmd))
3111 sw_info = (struct qeth_switch_info *)reply->param;
3112 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3113 sw_info->capabilities = attrs->capabilities;
3114 sw_info->settings = attrs->settings;
3115 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3120 int qeth_query_switch_attributes(struct qeth_card *card,
3121 struct qeth_switch_info *sw_info)
3123 struct qeth_cmd_buffer *iob;
3125 QETH_CARD_TEXT(card, 2, "qswiattr");
3126 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3128 if (!netif_carrier_ok(card->dev))
3130 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3131 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3134 return qeth_send_ipa_cmd(card, iob,
3135 qeth_query_switch_attributes_cb, sw_info);
3138 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3139 struct qeth_reply *reply, unsigned long data)
3141 struct qeth_ipa_cmd *cmd;
3144 cmd = (struct qeth_ipa_cmd *)data;
3145 rc = cmd->hdr.return_code;
3147 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3149 card->info.diagass_support = cmd->data.diagass.ext;
3153 static int qeth_query_setdiagass(struct qeth_card *card)
3155 struct qeth_cmd_buffer *iob;
3156 struct qeth_ipa_cmd *cmd;
3158 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3159 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3162 cmd = __ipa_cmd(iob);
3163 cmd->data.diagass.subcmd_len = 16;
3164 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3165 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3168 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3170 unsigned long info = get_zeroed_page(GFP_KERNEL);
3171 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3172 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3173 struct ccw_dev_id ccwid;
3176 tid->chpid = card->info.chpid;
3177 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3178 tid->ssid = ccwid.ssid;
3179 tid->devno = ccwid.devno;
3182 level = stsi(NULL, 0, 0, 0);
3183 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3184 tid->lparnr = info222->lpar_number;
3185 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3186 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3187 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3193 static int qeth_hw_trap_cb(struct qeth_card *card,
3194 struct qeth_reply *reply, unsigned long data)
3196 struct qeth_ipa_cmd *cmd;
3199 cmd = (struct qeth_ipa_cmd *)data;
3200 rc = cmd->hdr.return_code;
3202 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3206 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3208 struct qeth_cmd_buffer *iob;
3209 struct qeth_ipa_cmd *cmd;
3211 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3212 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3215 cmd = __ipa_cmd(iob);
3216 cmd->data.diagass.subcmd_len = 80;
3217 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3218 cmd->data.diagass.type = 1;
3219 cmd->data.diagass.action = action;
3221 case QETH_DIAGS_TRAP_ARM:
3222 cmd->data.diagass.options = 0x0003;
3223 cmd->data.diagass.ext = 0x00010000 +
3224 sizeof(struct qeth_trap_id);
3225 qeth_get_trap_id(card,
3226 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3228 case QETH_DIAGS_TRAP_DISARM:
3229 cmd->data.diagass.options = 0x0001;
3231 case QETH_DIAGS_TRAP_CAPTURE:
3234 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3236 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3238 static int qeth_check_qdio_errors(struct qeth_card *card,
3239 struct qdio_buffer *buf,
3240 unsigned int qdio_error,
3241 const char *dbftext)
3244 QETH_CARD_TEXT(card, 2, dbftext);
3245 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3246 buf->element[15].sflags);
3247 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3248 buf->element[14].sflags);
3249 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3250 if ((buf->element[15].sflags) == 0x12) {
3251 card->stats.rx_dropped++;
3259 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3261 struct qeth_qdio_q *queue = card->qdio.in_q;
3262 struct list_head *lh;
3268 count = (index < queue->next_buf_to_init)?
3269 card->qdio.in_buf_pool.buf_count -
3270 (queue->next_buf_to_init - index) :
3271 card->qdio.in_buf_pool.buf_count -
3272 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3273 /* only requeue at a certain threshold to avoid SIGAs */
3274 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3275 for (i = queue->next_buf_to_init;
3276 i < queue->next_buf_to_init + count; ++i) {
3277 if (qeth_init_input_buffer(card,
3278 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3285 if (newcount < count) {
3286 /* we are in memory shortage so we switch back to
3287 traditional skb allocation and drop packages */
3288 atomic_set(&card->force_alloc_skb, 3);
3291 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3296 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3298 if (i == card->qdio.in_buf_pool.buf_count) {
3299 QETH_CARD_TEXT(card, 2, "qsarbw");
3300 card->reclaim_index = index;
3301 schedule_delayed_work(
3302 &card->buffer_reclaim_work,
3303 QETH_RECLAIM_WORK_TIME);
3309 * according to old code it should be avoided to requeue all
3310 * 128 buffers in order to benefit from PCI avoidance.
3311 * this function keeps at least one buffer (the buffer at
3312 * 'index') un-requeued -> this buffer is the first buffer that
3313 * will be requeued the next time
3315 if (card->options.performance_stats) {
3316 card->perf_stats.inbound_do_qdio_cnt++;
3317 card->perf_stats.inbound_do_qdio_start_time =
3320 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3321 queue->next_buf_to_init, count);
3322 if (card->options.performance_stats)
3323 card->perf_stats.inbound_do_qdio_time +=
3325 card->perf_stats.inbound_do_qdio_start_time;
3327 QETH_CARD_TEXT(card, 2, "qinberr");
3329 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3330 QDIO_MAX_BUFFERS_PER_Q;
3334 static void qeth_buffer_reclaim_work(struct work_struct *work)
3336 struct qeth_card *card = container_of(work, struct qeth_card,
3337 buffer_reclaim_work.work);
3339 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3340 qeth_queue_input_buffer(card, card->reclaim_index);
3343 static void qeth_handle_send_error(struct qeth_card *card,
3344 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3346 int sbalf15 = buffer->buffer->element[15].sflags;
3348 QETH_CARD_TEXT(card, 6, "hdsnderr");
3349 if (card->info.type == QETH_CARD_TYPE_IQD) {
3356 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3361 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3364 QETH_CARD_TEXT(card, 1, "lnkfail");
3365 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3366 (u16)qdio_err, (u8)sbalf15);
3370 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3371 * @queue: queue to check for packing buffer
3373 * Returns number of buffers that were prepared for flush.
3375 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3377 struct qeth_qdio_out_buffer *buffer;
3379 buffer = queue->bufs[queue->next_buf_to_fill];
3380 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3381 (buffer->next_element_to_fill > 0)) {
3382 /* it's a packing buffer */
3383 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3384 queue->next_buf_to_fill =
3385 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3392 * Switched to packing state if the number of used buffers on a queue
3393 * reaches a certain limit.
3395 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3397 if (!queue->do_pack) {
3398 if (atomic_read(&queue->used_buffers)
3399 >= QETH_HIGH_WATERMARK_PACK){
3400 /* switch non-PACKING -> PACKING */
3401 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3402 if (queue->card->options.performance_stats)
3403 queue->card->perf_stats.sc_dp_p++;
3410 * Switches from packing to non-packing mode. If there is a packing
3411 * buffer on the queue this buffer will be prepared to be flushed.
3412 * In that case 1 is returned to inform the caller. If no buffer
3413 * has to be flushed, zero is returned.
3415 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3417 if (queue->do_pack) {
3418 if (atomic_read(&queue->used_buffers)
3419 <= QETH_LOW_WATERMARK_PACK) {
3420 /* switch PACKING -> non-PACKING */
3421 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3422 if (queue->card->options.performance_stats)
3423 queue->card->perf_stats.sc_p_dp++;
3425 return qeth_prep_flush_pack_buffer(queue);
3431 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3434 struct qeth_qdio_out_buffer *buf;
3437 unsigned int qdio_flags;
3439 for (i = index; i < index + count; ++i) {
3440 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3441 buf = queue->bufs[bidx];
3442 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3443 SBAL_EFLAGS_LAST_ENTRY;
3445 if (queue->bufstates)
3446 queue->bufstates[bidx].user = buf;
3448 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3451 if (!queue->do_pack) {
3452 if ((atomic_read(&queue->used_buffers) >=
3453 (QETH_HIGH_WATERMARK_PACK -
3454 QETH_WATERMARK_PACK_FUZZ)) &&
3455 !atomic_read(&queue->set_pci_flags_count)) {
3456 /* it's likely that we'll go to packing
3458 atomic_inc(&queue->set_pci_flags_count);
3459 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3462 if (!atomic_read(&queue->set_pci_flags_count)) {
3464 * there's no outstanding PCI any more, so we
3465 * have to request a PCI to be sure the the PCI
3466 * will wake at some time in the future then we
3467 * can flush packed buffers that might still be
3468 * hanging around, which can happen if no
3469 * further send was requested by the stack
3471 atomic_inc(&queue->set_pci_flags_count);
3472 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3477 netif_trans_update(queue->card->dev);
3478 if (queue->card->options.performance_stats) {
3479 queue->card->perf_stats.outbound_do_qdio_cnt++;
3480 queue->card->perf_stats.outbound_do_qdio_start_time =
3483 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3484 if (atomic_read(&queue->set_pci_flags_count))
3485 qdio_flags |= QDIO_FLAG_PCI_OUT;
3486 atomic_add(count, &queue->used_buffers);
3488 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3489 queue->queue_no, index, count);
3490 if (queue->card->options.performance_stats)
3491 queue->card->perf_stats.outbound_do_qdio_time +=
3493 queue->card->perf_stats.outbound_do_qdio_start_time;
3495 queue->card->stats.tx_errors += count;
3496 /* ignore temporary SIGA errors without busy condition */
3499 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3500 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3501 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3502 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3503 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3505 /* this must not happen under normal circumstances. if it
3506 * happens something is really wrong -> recover */
3507 qeth_schedule_recovery(queue->card);
3510 if (queue->card->options.performance_stats)
3511 queue->card->perf_stats.bufs_sent += count;
3514 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3518 int q_was_packing = 0;
3521 * check if weed have to switch to non-packing mode or if
3522 * we have to get a pci flag out on the queue
3524 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3525 !atomic_read(&queue->set_pci_flags_count)) {
3526 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3527 QETH_OUT_Q_UNLOCKED) {
3529 * If we get in here, there was no action in
3530 * do_send_packet. So, we check if there is a
3531 * packing buffer to be flushed here.
3533 netif_stop_queue(queue->card->dev);
3534 index = queue->next_buf_to_fill;
3535 q_was_packing = queue->do_pack;
3536 /* queue->do_pack may change */
3538 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3540 !atomic_read(&queue->set_pci_flags_count))
3541 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3542 if (queue->card->options.performance_stats &&
3544 queue->card->perf_stats.bufs_sent_pack +=
3547 qeth_flush_buffers(queue, index, flush_cnt);
3548 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3553 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3554 unsigned long card_ptr)
3556 struct qeth_card *card = (struct qeth_card *)card_ptr;
3558 if (card->dev->flags & IFF_UP)
3559 napi_schedule(&card->napi);
3562 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3566 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3570 if (card->options.cq == cq) {
3575 if (card->state != CARD_STATE_DOWN &&
3576 card->state != CARD_STATE_RECOVER) {
3581 qeth_free_qdio_buffers(card);
3582 card->options.cq = cq;
3589 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3591 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3592 unsigned int queue, int first_element,
3595 struct qeth_qdio_q *cq = card->qdio.c_q;
3599 if (!qeth_is_cq(card, queue))
3602 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3603 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3604 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3607 netif_stop_queue(card->dev);
3608 qeth_schedule_recovery(card);
3612 if (card->options.performance_stats) {
3613 card->perf_stats.cq_cnt++;
3614 card->perf_stats.cq_start_time = qeth_get_micros();
3617 for (i = first_element; i < first_element + count; ++i) {
3618 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3619 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3622 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3623 buffer->element[e].addr) {
3624 unsigned long phys_aob_addr;
3626 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3627 qeth_qdio_handle_aob(card, phys_aob_addr);
3630 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3632 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3633 card->qdio.c_q->next_buf_to_init,
3636 dev_warn(&card->gdev->dev,
3637 "QDIO reported an error, rc=%i\n", rc);
3638 QETH_CARD_TEXT(card, 2, "qcqherr");
3640 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3641 + count) % QDIO_MAX_BUFFERS_PER_Q;
3643 netif_wake_queue(card->dev);
3645 if (card->options.performance_stats) {
3646 int delta_t = qeth_get_micros();
3647 delta_t -= card->perf_stats.cq_start_time;
3648 card->perf_stats.cq_time += delta_t;
3654 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3655 unsigned int qdio_err, int queue,
3656 int first_elem, int count,
3657 unsigned long card_ptr)
3659 struct qeth_card *card = (struct qeth_card *)card_ptr;
3661 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3662 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3664 if (qeth_is_cq(card, queue))
3665 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3667 qeth_schedule_recovery(card);
3670 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3671 unsigned int qdio_error, int __queue,
3672 int first_element, int count,
3673 unsigned long card_ptr)
3675 struct qeth_card *card = (struct qeth_card *) card_ptr;
3676 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3677 struct qeth_qdio_out_buffer *buffer;
3680 QETH_CARD_TEXT(card, 6, "qdouhdl");
3681 if (qdio_error & QDIO_ERROR_FATAL) {
3682 QETH_CARD_TEXT(card, 2, "achkcond");
3683 netif_stop_queue(card->dev);
3684 qeth_schedule_recovery(card);
3687 if (card->options.performance_stats) {
3688 card->perf_stats.outbound_handler_cnt++;
3689 card->perf_stats.outbound_handler_start_time =
3692 for (i = first_element; i < (first_element + count); ++i) {
3693 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3694 buffer = queue->bufs[bidx];
3695 qeth_handle_send_error(card, buffer, qdio_error);
3697 if (queue->bufstates &&
3698 (queue->bufstates[bidx].flags &
3699 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3700 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3702 if (atomic_cmpxchg(&buffer->state,
3703 QETH_QDIO_BUF_PRIMED,
3704 QETH_QDIO_BUF_PENDING) ==
3705 QETH_QDIO_BUF_PRIMED) {
3706 qeth_notify_skbs(queue, buffer,
3709 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3711 /* prepare the queue slot for re-use: */
3712 qeth_scrub_qdio_buffer(buffer->buffer,
3713 QETH_MAX_BUFFER_ELEMENTS(card));
3714 if (qeth_init_qdio_out_buf(queue, bidx)) {
3715 QETH_CARD_TEXT(card, 2, "outofbuf");
3716 qeth_schedule_recovery(card);
3719 if (card->options.cq == QETH_CQ_ENABLED) {
3720 enum iucv_tx_notify n;
3722 n = qeth_compute_cq_notification(
3723 buffer->buffer->element[15].sflags, 0);
3724 qeth_notify_skbs(queue, buffer, n);
3727 qeth_clear_output_buffer(queue, buffer);
3729 qeth_cleanup_handled_pending(queue, bidx, 0);
3731 atomic_sub(count, &queue->used_buffers);
3732 /* check if we need to do something on this outbound queue */
3733 if (card->info.type != QETH_CARD_TYPE_IQD)
3734 qeth_check_outbound_queue(queue);
3736 netif_wake_queue(queue->card->dev);
3737 if (card->options.performance_stats)
3738 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3739 card->perf_stats.outbound_handler_start_time;
3742 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3743 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3745 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3751 * Note: Function assumes that we have 4 outbound queues.
3753 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3759 switch (card->qdio.do_prio_queueing) {
3760 case QETH_PRIO_Q_ING_TOS:
3761 case QETH_PRIO_Q_ING_PREC:
3764 tos = ipv4_get_dsfield(ip_hdr(skb));
3767 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3770 return card->qdio.default_out_queue;
3772 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3773 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3774 if (tos & IPTOS_MINCOST)
3775 return qeth_cut_iqd_prio(card, 3);
3776 if (tos & IPTOS_RELIABILITY)
3778 if (tos & IPTOS_THROUGHPUT)
3780 if (tos & IPTOS_LOWDELAY)
3783 case QETH_PRIO_Q_ING_SKB:
3784 if (skb->priority > 5)
3786 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3787 case QETH_PRIO_Q_ING_VLAN:
3788 tci = &((struct ethhdr *)skb->data)->h_proto;
3789 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3790 return qeth_cut_iqd_prio(card,
3791 ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3796 return card->qdio.default_out_queue;
3798 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3801 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3804 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3805 * fragmented part of the SKB. Returns zero for linear SKB.
3807 int qeth_get_elements_for_frags(struct sk_buff *skb)
3809 int cnt, elements = 0;
3811 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3812 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3814 elements += qeth_get_elements_for_range(
3815 (addr_t)skb_frag_address(frag),
3816 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3820 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3822 static unsigned int qeth_count_elements(struct sk_buff *skb, int data_offset)
3824 unsigned int elements = qeth_get_elements_for_frags(skb);
3825 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3826 addr_t start = (addr_t)skb->data + data_offset;
3829 elements += qeth_get_elements_for_range(start, end);
3834 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3835 * @card: qeth card structure, to check max. elems.
3837 * @extra_elems: extra elems needed, to check against max.
3838 * @data_offset: range starts at skb->data + data_offset
3840 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3841 * skb data, including linear part and fragments. Checks if the result plus
3842 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3843 * Note: extra_elems is not included in the returned result.
3845 int qeth_get_elements_no(struct qeth_card *card,
3846 struct sk_buff *skb, int extra_elems, int data_offset)
3848 int elements = qeth_count_elements(skb, data_offset);
3850 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3851 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3852 "(Number=%d / Length=%d). Discarded.\n",
3853 elements + extra_elems, skb->len);
3858 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3860 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3862 int hroom, inpage, rest;
3864 if (((unsigned long)skb->data & PAGE_MASK) !=
3865 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3866 hroom = skb_headroom(skb);
3867 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3868 rest = len - inpage;
3871 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3874 *hdr = (struct qeth_hdr *)skb->data;
3875 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3879 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3882 * qeth_add_hw_header() - add a HW header to an skb.
3883 * @skb: skb that the HW header should be added to.
3884 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3885 * it contains a valid pointer to a qeth_hdr.
3886 * @hdr_len: length of the HW header.
3887 * @proto_len: length of protocol headers that need to be in same page as the
3890 * Returns the pushed length. If the header can't be pushed on
3891 * (eg. because it would cross a page boundary), it is allocated from
3892 * the cache instead and 0 is returned.
3893 * The number of needed buffer elements is returned in @elements.
3894 * Error to create the hdr is indicated by returning with < 0.
3896 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb,
3897 struct qeth_hdr **hdr, unsigned int hdr_len,
3898 unsigned int proto_len, unsigned int *elements)
3900 const unsigned int max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
3901 const unsigned int contiguous = proto_len ? proto_len : 1;
3902 unsigned int __elements;
3908 start = (addr_t)skb->data - hdr_len;
3909 end = (addr_t)skb->data;
3911 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3912 /* Push HW header into same page as first protocol header. */
3914 __elements = qeth_count_elements(skb, 0);
3915 } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) {
3916 /* Push HW header into a new page. */
3918 __elements = 1 + qeth_count_elements(skb, 0);
3920 /* Use header cache, copy protocol headers up. */
3922 __elements = 1 + qeth_count_elements(skb, proto_len);
3925 /* Compress skb to fit into one IO buffer: */
3926 if (__elements > max_elements) {
3927 if (!skb_is_nonlinear(skb)) {
3928 /* Drop it, no easy way of shrinking it further. */
3929 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3930 max_elements, __elements, skb->len);
3934 rc = skb_linearize(skb);
3935 if (card->options.performance_stats) {
3937 card->perf_stats.tx_linfail++;
3939 card->perf_stats.tx_lin++;
3944 /* Linearization changed the layout, re-evaluate: */
3948 *elements = __elements;
3949 /* Add the header: */
3951 *hdr = skb_push(skb, hdr_len);
3955 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3958 /* Copy protocol headers behind HW header: */
3959 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3962 EXPORT_SYMBOL_GPL(qeth_add_hw_header);
3964 static void __qeth_fill_buffer(struct sk_buff *skb,
3965 struct qeth_qdio_out_buffer *buf,
3966 bool is_first_elem, unsigned int offset)
3968 struct qdio_buffer *buffer = buf->buffer;
3969 int element = buf->next_element_to_fill;
3970 int length = skb_headlen(skb) - offset;
3971 char *data = skb->data + offset;
3972 int length_here, cnt;
3974 /* map linear part into buffer element(s) */
3975 while (length > 0) {
3976 /* length_here is the remaining amount of data in this page */
3977 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3978 if (length < length_here)
3979 length_here = length;
3981 buffer->element[element].addr = data;
3982 buffer->element[element].length = length_here;
3983 length -= length_here;
3984 if (is_first_elem) {
3985 is_first_elem = false;
3986 if (length || skb_is_nonlinear(skb))
3987 /* skb needs additional elements */
3988 buffer->element[element].eflags =
3989 SBAL_EFLAGS_FIRST_FRAG;
3991 buffer->element[element].eflags = 0;
3993 buffer->element[element].eflags =
3994 SBAL_EFLAGS_MIDDLE_FRAG;
3996 data += length_here;
4000 /* map page frags into buffer element(s) */
4001 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
4002 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
4004 data = skb_frag_address(frag);
4005 length = skb_frag_size(frag);
4006 while (length > 0) {
4007 length_here = PAGE_SIZE -
4008 ((unsigned long) data % PAGE_SIZE);
4009 if (length < length_here)
4010 length_here = length;
4012 buffer->element[element].addr = data;
4013 buffer->element[element].length = length_here;
4014 buffer->element[element].eflags =
4015 SBAL_EFLAGS_MIDDLE_FRAG;
4016 length -= length_here;
4017 data += length_here;
4022 if (buffer->element[element - 1].eflags)
4023 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4024 buf->next_element_to_fill = element;
4028 * qeth_fill_buffer() - map skb into an output buffer
4029 * @queue: QDIO queue to submit the buffer on
4030 * @buf: buffer to transport the skb
4031 * @skb: skb to map into the buffer
4032 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
4033 * from qeth_core_header_cache.
4034 * @offset: when mapping the skb, start at skb->data + offset
4035 * @hd_len: if > 0, build a dedicated header element of this size
4037 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4038 struct qeth_qdio_out_buffer *buf,
4039 struct sk_buff *skb, struct qeth_hdr *hdr,
4040 unsigned int offset, unsigned int hd_len)
4042 struct qdio_buffer *buffer = buf->buffer;
4043 bool is_first_elem = true;
4046 refcount_inc(&skb->users);
4047 skb_queue_tail(&buf->skb_list, skb);
4049 /* build dedicated header element */
4051 int element = buf->next_element_to_fill;
4052 is_first_elem = false;
4054 buffer->element[element].addr = hdr;
4055 buffer->element[element].length = hd_len;
4056 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4057 /* remember to free cache-allocated qeth_hdr: */
4058 buf->is_header[element] = ((void *)hdr != skb->data);
4059 buf->next_element_to_fill++;
4062 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4064 if (!queue->do_pack) {
4065 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4066 /* set state to PRIMED -> will be flushed */
4067 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4070 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4071 if (queue->card->options.performance_stats)
4072 queue->card->perf_stats.skbs_sent_pack++;
4073 if (buf->next_element_to_fill >=
4074 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4076 * packed buffer if full -> set state PRIMED
4077 * -> will be flushed
4079 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4086 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4087 struct qeth_hdr *hdr, unsigned int offset,
4088 unsigned int hd_len)
4090 int index = queue->next_buf_to_fill;
4091 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4094 * check if buffer is empty to make sure that we do not 'overtake'
4095 * ourselves and try to fill a buffer that is already primed
4097 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4099 queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4100 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4101 qeth_flush_buffers(queue, index, 1);
4104 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4106 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4107 struct sk_buff *skb, struct qeth_hdr *hdr,
4108 unsigned int offset, unsigned int hd_len,
4109 int elements_needed)
4111 struct qeth_qdio_out_buffer *buffer;
4113 int flush_count = 0;
4118 /* spin until we get the queue ... */
4119 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4120 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4121 start_index = queue->next_buf_to_fill;
4122 buffer = queue->bufs[queue->next_buf_to_fill];
4124 * check if buffer is empty to make sure that we do not 'overtake'
4125 * ourselves and try to fill a buffer that is already primed
4127 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4128 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4131 /* check if we need to switch packing state of this queue */
4132 qeth_switch_to_packing_if_needed(queue);
4133 if (queue->do_pack) {
4135 /* does packet fit in current buffer? */
4136 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4137 buffer->next_element_to_fill) < elements_needed) {
4138 /* ... no -> set state PRIMED */
4139 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4141 queue->next_buf_to_fill =
4142 (queue->next_buf_to_fill + 1) %
4143 QDIO_MAX_BUFFERS_PER_Q;
4144 buffer = queue->bufs[queue->next_buf_to_fill];
4145 /* we did a step forward, so check buffer state
4147 if (atomic_read(&buffer->state) !=
4148 QETH_QDIO_BUF_EMPTY) {
4149 qeth_flush_buffers(queue, start_index,
4151 atomic_set(&queue->state,
4152 QETH_OUT_Q_UNLOCKED);
4158 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4159 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4160 QDIO_MAX_BUFFERS_PER_Q;
4163 qeth_flush_buffers(queue, start_index, flush_count);
4164 else if (!atomic_read(&queue->set_pci_flags_count))
4165 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4167 * queue->state will go from LOCKED -> UNLOCKED or from
4168 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4169 * (switch packing state or flush buffer to get another pci flag out).
4170 * In that case we will enter this loop
4172 while (atomic_dec_return(&queue->state)) {
4173 start_index = queue->next_buf_to_fill;
4174 /* check if we can go back to non-packing state */
4175 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4177 * check if we need to flush a packing buffer to get a pci
4178 * flag out on the queue
4180 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4181 tmp = qeth_prep_flush_pack_buffer(queue);
4183 qeth_flush_buffers(queue, start_index, tmp);
4188 /* at this point the queue is UNLOCKED again */
4189 if (queue->card->options.performance_stats && do_pack)
4190 queue->card->perf_stats.bufs_sent_pack += flush_count;
4194 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4196 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4197 struct qeth_reply *reply, unsigned long data)
4199 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4200 struct qeth_ipacmd_setadpparms *setparms;
4202 QETH_CARD_TEXT(card, 4, "prmadpcb");
4204 setparms = &(cmd->data.setadapterparms);
4205 if (qeth_setadpparms_inspect_rc(cmd)) {
4206 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4207 setparms->data.mode = SET_PROMISC_MODE_OFF;
4209 card->info.promisc_mode = setparms->data.mode;
4213 void qeth_setadp_promisc_mode(struct qeth_card *card)
4215 enum qeth_ipa_promisc_modes mode;
4216 struct net_device *dev = card->dev;
4217 struct qeth_cmd_buffer *iob;
4218 struct qeth_ipa_cmd *cmd;
4220 QETH_CARD_TEXT(card, 4, "setprom");
4222 if (((dev->flags & IFF_PROMISC) &&
4223 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4224 (!(dev->flags & IFF_PROMISC) &&
4225 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4227 mode = SET_PROMISC_MODE_OFF;
4228 if (dev->flags & IFF_PROMISC)
4229 mode = SET_PROMISC_MODE_ON;
4230 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4232 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4233 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4236 cmd = __ipa_cmd(iob);
4237 cmd->data.setadapterparms.data.mode = mode;
4238 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4240 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4242 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4244 struct qeth_card *card;
4246 card = dev->ml_priv;
4248 QETH_CARD_TEXT(card, 5, "getstat");
4250 return &card->stats;
4252 EXPORT_SYMBOL_GPL(qeth_get_stats);
4254 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4255 struct qeth_reply *reply, unsigned long data)
4257 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4259 QETH_CARD_TEXT(card, 4, "chgmaccb");
4260 if (qeth_setadpparms_inspect_rc(cmd))
4263 if (!card->options.layer2 ||
4264 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4265 ether_addr_copy(card->dev->dev_addr,
4266 cmd->data.setadapterparms.data.change_addr.addr);
4267 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4272 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4275 struct qeth_cmd_buffer *iob;
4276 struct qeth_ipa_cmd *cmd;
4278 QETH_CARD_TEXT(card, 4, "chgmac");
4280 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4281 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4282 sizeof(struct qeth_change_addr));
4285 cmd = __ipa_cmd(iob);
4286 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4287 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4288 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4289 card->dev->dev_addr);
4290 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4294 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4296 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4297 struct qeth_reply *reply, unsigned long data)
4299 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4300 struct qeth_set_access_ctrl *access_ctrl_req;
4301 int fallback = *(int *)reply->param;
4303 QETH_CARD_TEXT(card, 4, "setaccb");
4304 if (cmd->hdr.return_code)
4306 qeth_setadpparms_inspect_rc(cmd);
4308 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4309 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4310 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4311 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4312 cmd->data.setadapterparms.hdr.return_code);
4313 if (cmd->data.setadapterparms.hdr.return_code !=
4314 SET_ACCESS_CTRL_RC_SUCCESS)
4315 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4316 card->gdev->dev.kobj.name,
4317 access_ctrl_req->subcmd_code,
4318 cmd->data.setadapterparms.hdr.return_code);
4319 switch (cmd->data.setadapterparms.hdr.return_code) {
4320 case SET_ACCESS_CTRL_RC_SUCCESS:
4321 if (card->options.isolation == ISOLATION_MODE_NONE) {
4322 dev_info(&card->gdev->dev,
4323 "QDIO data connection isolation is deactivated\n");
4325 dev_info(&card->gdev->dev,
4326 "QDIO data connection isolation is activated\n");
4329 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4330 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4331 "deactivated\n", dev_name(&card->gdev->dev));
4333 card->options.isolation = card->options.prev_isolation;
4335 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4336 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4337 " activated\n", dev_name(&card->gdev->dev));
4339 card->options.isolation = card->options.prev_isolation;
4341 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4342 dev_err(&card->gdev->dev, "Adapter does not "
4343 "support QDIO data connection isolation\n");
4345 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4346 dev_err(&card->gdev->dev,
4347 "Adapter is dedicated. "
4348 "QDIO data connection isolation not supported\n");
4350 card->options.isolation = card->options.prev_isolation;
4352 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4353 dev_err(&card->gdev->dev,
4354 "TSO does not permit QDIO data connection isolation\n");
4356 card->options.isolation = card->options.prev_isolation;
4358 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4359 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4360 "support reflective relay mode\n");
4362 card->options.isolation = card->options.prev_isolation;
4364 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4365 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4366 "enabled at the adjacent switch port");
4368 card->options.isolation = card->options.prev_isolation;
4370 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4371 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4372 "at the adjacent switch failed\n");
4375 /* this should never happen */
4377 card->options.isolation = card->options.prev_isolation;
4383 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4384 enum qeth_ipa_isolation_modes isolation, int fallback)
4387 struct qeth_cmd_buffer *iob;
4388 struct qeth_ipa_cmd *cmd;
4389 struct qeth_set_access_ctrl *access_ctrl_req;
4391 QETH_CARD_TEXT(card, 4, "setacctl");
4393 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4394 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4396 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4397 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4398 sizeof(struct qeth_set_access_ctrl));
4401 cmd = __ipa_cmd(iob);
4402 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4403 access_ctrl_req->subcmd_code = isolation;
4405 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4407 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4411 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4415 QETH_CARD_TEXT(card, 4, "setactlo");
4417 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4418 card->info.type == QETH_CARD_TYPE_OSX) &&
4419 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4420 rc = qeth_setadpparms_set_access_ctrl(card,
4421 card->options.isolation, fallback);
4424 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4425 card->gdev->dev.kobj.name,
4429 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4430 card->options.isolation = ISOLATION_MODE_NONE;
4432 dev_err(&card->gdev->dev, "Adapter does not "
4433 "support QDIO data connection isolation\n");
4438 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4440 void qeth_tx_timeout(struct net_device *dev)
4442 struct qeth_card *card;
4444 card = dev->ml_priv;
4445 QETH_CARD_TEXT(card, 4, "txtimeo");
4446 card->stats.tx_errors++;
4447 qeth_schedule_recovery(card);
4449 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4451 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4453 struct qeth_card *card = dev->ml_priv;
4457 case MII_BMCR: /* Basic mode control register */
4459 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4460 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4461 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4462 rc |= BMCR_SPEED100;
4464 case MII_BMSR: /* Basic mode status register */
4465 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4466 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4469 case MII_PHYSID1: /* PHYS ID 1 */
4470 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4472 rc = (rc >> 5) & 0xFFFF;
4474 case MII_PHYSID2: /* PHYS ID 2 */
4475 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4477 case MII_ADVERTISE: /* Advertisement control reg */
4480 case MII_LPA: /* Link partner ability reg */
4481 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4482 LPA_100BASE4 | LPA_LPACK;
4484 case MII_EXPANSION: /* Expansion register */
4486 case MII_DCOUNTER: /* disconnect counter */
4488 case MII_FCSCOUNTER: /* false carrier counter */
4490 case MII_NWAYTEST: /* N-way auto-neg test register */
4492 case MII_RERRCOUNTER: /* rx error counter */
4493 rc = card->stats.rx_errors;
4495 case MII_SREVISION: /* silicon revision */
4497 case MII_RESV1: /* reserved 1 */
4499 case MII_LBRERROR: /* loopback, rx, bypass error */
4501 case MII_PHYADDR: /* physical address */
4503 case MII_RESV2: /* reserved 2 */
4505 case MII_TPISTATUS: /* TPI status for 10mbps */
4507 case MII_NCONFIG: /* network interface config */
4515 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4516 struct qeth_cmd_buffer *iob, int len,
4517 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4523 QETH_CARD_TEXT(card, 4, "sendsnmp");
4525 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4526 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4527 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4528 /* adjust PDU length fields in IPA_PDU_HEADER */
4529 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4531 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4532 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4533 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4534 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4535 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4536 reply_cb, reply_param);
4539 static int qeth_snmp_command_cb(struct qeth_card *card,
4540 struct qeth_reply *reply, unsigned long sdata)
4542 struct qeth_ipa_cmd *cmd;
4543 struct qeth_arp_query_info *qinfo;
4544 unsigned char *data;
4548 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4550 cmd = (struct qeth_ipa_cmd *) sdata;
4551 data = (unsigned char *)((char *)cmd - reply->offset);
4552 qinfo = (struct qeth_arp_query_info *) reply->param;
4554 if (cmd->hdr.return_code) {
4555 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4558 if (cmd->data.setadapterparms.hdr.return_code) {
4559 cmd->hdr.return_code =
4560 cmd->data.setadapterparms.hdr.return_code;
4561 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4564 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4565 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4566 snmp_data = &cmd->data.setadapterparms.data.snmp;
4567 data_len -= offsetof(struct qeth_ipa_cmd,
4568 data.setadapterparms.data.snmp);
4570 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4571 data_len -= offsetof(struct qeth_ipa_cmd,
4572 data.setadapterparms.data.snmp.request);
4575 /* check if there is enough room in userspace */
4576 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4577 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4578 cmd->hdr.return_code = IPA_RC_ENOMEM;
4581 QETH_CARD_TEXT_(card, 4, "snore%i",
4582 cmd->data.setadapterparms.hdr.used_total);
4583 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4584 cmd->data.setadapterparms.hdr.seq_no);
4585 /*copy entries to user buffer*/
4586 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4587 qinfo->udata_offset += data_len;
4589 /* check if all replies received ... */
4590 QETH_CARD_TEXT_(card, 4, "srtot%i",
4591 cmd->data.setadapterparms.hdr.used_total);
4592 QETH_CARD_TEXT_(card, 4, "srseq%i",
4593 cmd->data.setadapterparms.hdr.seq_no);
4594 if (cmd->data.setadapterparms.hdr.seq_no <
4595 cmd->data.setadapterparms.hdr.used_total)
4600 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4602 struct qeth_cmd_buffer *iob;
4603 struct qeth_ipa_cmd *cmd;
4604 struct qeth_snmp_ureq *ureq;
4605 unsigned int req_len;
4606 struct qeth_arp_query_info qinfo = {0, };
4609 QETH_CARD_TEXT(card, 3, "snmpcmd");
4611 if (card->info.guestlan)
4614 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4615 (!card->options.layer2)) {
4618 /* skip 4 bytes (data_len struct member) to get req_len */
4619 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4621 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4622 sizeof(struct qeth_ipacmd_hdr) -
4623 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4625 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4627 QETH_CARD_TEXT(card, 2, "snmpnome");
4628 return PTR_ERR(ureq);
4630 qinfo.udata_len = ureq->hdr.data_len;
4631 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4636 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4638 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4639 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4644 cmd = __ipa_cmd(iob);
4645 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4646 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4647 qeth_snmp_command_cb, (void *)&qinfo);
4649 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4650 QETH_CARD_IFNAME(card), rc);
4652 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4661 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4662 struct qeth_reply *reply, unsigned long data)
4664 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4665 struct qeth_qoat_priv *priv;
4669 QETH_CARD_TEXT(card, 3, "qoatcb");
4670 if (qeth_setadpparms_inspect_rc(cmd))
4673 priv = (struct qeth_qoat_priv *)reply->param;
4674 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4675 resdata = (char *)data + 28;
4677 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4678 cmd->hdr.return_code = IPA_RC_FFFF;
4682 memcpy((priv->buffer + priv->response_len), resdata,
4684 priv->response_len += resdatalen;
4686 if (cmd->data.setadapterparms.hdr.seq_no <
4687 cmd->data.setadapterparms.hdr.used_total)
4692 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4695 struct qeth_cmd_buffer *iob;
4696 struct qeth_ipa_cmd *cmd;
4697 struct qeth_query_oat *oat_req;
4698 struct qeth_query_oat_data oat_data;
4699 struct qeth_qoat_priv priv;
4702 QETH_CARD_TEXT(card, 3, "qoatcmd");
4704 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4709 if (copy_from_user(&oat_data, udata,
4710 sizeof(struct qeth_query_oat_data))) {
4715 priv.buffer_len = oat_data.buffer_len;
4716 priv.response_len = 0;
4717 priv.buffer = vzalloc(oat_data.buffer_len);
4723 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4724 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4725 sizeof(struct qeth_query_oat));
4730 cmd = __ipa_cmd(iob);
4731 oat_req = &cmd->data.setadapterparms.data.query_oat;
4732 oat_req->subcmd_code = oat_data.command;
4734 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4737 if (is_compat_task())
4738 tmp = compat_ptr(oat_data.ptr);
4740 tmp = (void __user *)(unsigned long)oat_data.ptr;
4742 if (copy_to_user(tmp, priv.buffer,
4743 priv.response_len)) {
4748 oat_data.response_len = priv.response_len;
4750 if (copy_to_user(udata, &oat_data,
4751 sizeof(struct qeth_query_oat_data)))
4754 if (rc == IPA_RC_FFFF)
4763 static int qeth_query_card_info_cb(struct qeth_card *card,
4764 struct qeth_reply *reply, unsigned long data)
4766 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4767 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4768 struct qeth_query_card_info *card_info;
4770 QETH_CARD_TEXT(card, 2, "qcrdincb");
4771 if (qeth_setadpparms_inspect_rc(cmd))
4774 card_info = &cmd->data.setadapterparms.data.card_info;
4775 carrier_info->card_type = card_info->card_type;
4776 carrier_info->port_mode = card_info->port_mode;
4777 carrier_info->port_speed = card_info->port_speed;
4781 static int qeth_query_card_info(struct qeth_card *card,
4782 struct carrier_info *carrier_info)
4784 struct qeth_cmd_buffer *iob;
4786 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4787 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4789 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4790 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4793 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4794 (void *)carrier_info);
4798 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4799 * @card: pointer to a qeth_card
4802 * 0, if a MAC address has been set for the card's netdevice
4803 * a return code, for various error conditions
4805 int qeth_vm_request_mac(struct qeth_card *card)
4807 struct diag26c_mac_resp *response;
4808 struct diag26c_mac_req *request;
4809 struct ccw_dev_id id;
4812 QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4814 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4815 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4816 if (!request || !response) {
4821 ccw_device_get_id(CARD_DDEV(card), &id);
4822 request->resp_buf_len = sizeof(*response);
4823 request->resp_version = DIAG26C_VERSION2;
4824 request->op_code = DIAG26C_GET_MAC;
4825 request->devno = id.devno;
4827 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4828 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4829 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4832 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4834 if (request->resp_buf_len < sizeof(*response) ||
4835 response->version != request->resp_version) {
4837 QETH_DBF_TEXT(SETUP, 2, "badresp");
4838 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4839 sizeof(request->resp_buf_len));
4840 } else if (!is_valid_ether_addr(response->mac)) {
4842 QETH_DBF_TEXT(SETUP, 2, "badmac");
4843 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4845 ether_addr_copy(card->dev->dev_addr, response->mac);
4853 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4855 static int qeth_get_qdio_q_format(struct qeth_card *card)
4857 if (card->info.type == QETH_CARD_TYPE_IQD)
4858 return QDIO_IQDIO_QFMT;
4860 return QDIO_QETH_QFMT;
4863 static void qeth_determine_capabilities(struct qeth_card *card)
4868 struct ccw_device *ddev;
4869 int ddev_offline = 0;
4871 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4872 ddev = CARD_DDEV(card);
4873 if (!ddev->online) {
4875 rc = ccw_device_set_online(ddev);
4877 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4882 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4884 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4885 dev_name(&card->gdev->dev), rc);
4886 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4889 qeth_configure_unitaddr(card, prcd);
4891 qeth_configure_blkt_default(card, prcd);
4894 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4896 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4898 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4899 QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4900 QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4901 QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4902 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4903 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4904 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4905 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4906 dev_info(&card->gdev->dev,
4907 "Completion Queueing supported\n");
4909 card->options.cq = QETH_CQ_NOTAVAILABLE;
4914 if (ddev_offline == 1)
4915 ccw_device_set_offline(ddev);
4920 static void qeth_qdio_establish_cq(struct qeth_card *card,
4921 struct qdio_buffer **in_sbal_ptrs,
4922 void (**queue_start_poll)
4923 (struct ccw_device *, int,
4928 if (card->options.cq == QETH_CQ_ENABLED) {
4929 int offset = QDIO_MAX_BUFFERS_PER_Q *
4930 (card->qdio.no_in_queues - 1);
4932 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4933 in_sbal_ptrs[offset + i] =
4934 card->qdio.c_q->bufs[i].buffer;
4936 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4940 static int qeth_qdio_establish(struct qeth_card *card)
4942 struct qdio_initialize init_data;
4943 char *qib_param_field;
4944 struct qdio_buffer **in_sbal_ptrs;
4945 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4946 struct qdio_buffer **out_sbal_ptrs;
4950 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4952 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4954 if (!qib_param_field) {
4956 goto out_free_nothing;
4959 qeth_create_qib_param_field(card, qib_param_field);
4960 qeth_create_qib_param_field_blkt(card, qib_param_field);
4962 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4965 if (!in_sbal_ptrs) {
4967 goto out_free_qib_param;
4970 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4971 in_sbal_ptrs[i] = card->qdio.in_q->bufs[i].buffer;
4973 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4975 if (!queue_start_poll) {
4977 goto out_free_in_sbals;
4979 for (i = 0; i < card->qdio.no_in_queues; ++i)
4980 queue_start_poll[i] = qeth_qdio_start_poll;
4982 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4985 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4988 if (!out_sbal_ptrs) {
4990 goto out_free_queue_start_poll;
4993 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4994 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++, k++)
4996 card->qdio.out_qs[i]->bufs[j]->buffer;
4998 memset(&init_data, 0, sizeof(struct qdio_initialize));
4999 init_data.cdev = CARD_DDEV(card);
5000 init_data.q_format = qeth_get_qdio_q_format(card);
5001 init_data.qib_param_field_format = 0;
5002 init_data.qib_param_field = qib_param_field;
5003 init_data.no_input_qs = card->qdio.no_in_queues;
5004 init_data.no_output_qs = card->qdio.no_out_queues;
5005 init_data.input_handler = qeth_qdio_input_handler;
5006 init_data.output_handler = qeth_qdio_output_handler;
5007 init_data.queue_start_poll_array = queue_start_poll;
5008 init_data.int_parm = (unsigned long) card;
5009 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
5010 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
5011 init_data.output_sbal_state_array = card->qdio.out_bufstates;
5012 init_data.scan_threshold =
5013 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5015 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5016 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5017 rc = qdio_allocate(&init_data);
5019 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5022 rc = qdio_establish(&init_data);
5024 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5025 qdio_free(CARD_DDEV(card));
5029 switch (card->options.cq) {
5030 case QETH_CQ_ENABLED:
5031 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5033 case QETH_CQ_DISABLED:
5034 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5040 kfree(out_sbal_ptrs);
5041 out_free_queue_start_poll:
5042 kfree(queue_start_poll);
5044 kfree(in_sbal_ptrs);
5046 kfree(qib_param_field);
5051 static void qeth_core_free_card(struct qeth_card *card)
5053 QETH_DBF_TEXT(SETUP, 2, "freecrd");
5054 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5055 qeth_clean_channel(&card->read);
5056 qeth_clean_channel(&card->write);
5057 qeth_clean_channel(&card->data);
5058 qeth_free_qdio_buffers(card);
5059 unregister_service_level(&card->qeth_service_level);
5063 void qeth_trace_features(struct qeth_card *card)
5065 QETH_CARD_TEXT(card, 2, "features");
5066 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5067 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5068 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5069 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5070 sizeof(card->info.diagass_support));
5072 EXPORT_SYMBOL_GPL(qeth_trace_features);
5074 static struct ccw_device_id qeth_ids[] = {
5075 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5076 .driver_info = QETH_CARD_TYPE_OSD},
5077 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5078 .driver_info = QETH_CARD_TYPE_IQD},
5079 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5080 .driver_info = QETH_CARD_TYPE_OSN},
5081 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5082 .driver_info = QETH_CARD_TYPE_OSM},
5083 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5084 .driver_info = QETH_CARD_TYPE_OSX},
5087 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5089 static struct ccw_driver qeth_ccw_driver = {
5091 .owner = THIS_MODULE,
5095 .probe = ccwgroup_probe_ccwdev,
5096 .remove = ccwgroup_remove_ccwdev,
5099 int qeth_core_hardsetup_card(struct qeth_card *card)
5104 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5105 atomic_set(&card->force_alloc_skb, 0);
5106 rc = qeth_update_from_chp_desc(card);
5111 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5112 dev_name(&card->gdev->dev));
5113 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5114 ccw_device_set_offline(CARD_DDEV(card));
5115 ccw_device_set_offline(CARD_WDEV(card));
5116 ccw_device_set_offline(CARD_RDEV(card));
5117 qdio_free(CARD_DDEV(card));
5118 rc = ccw_device_set_online(CARD_RDEV(card));
5121 rc = ccw_device_set_online(CARD_WDEV(card));
5124 rc = ccw_device_set_online(CARD_DDEV(card));
5128 if (rc == -ERESTARTSYS) {
5129 QETH_DBF_TEXT(SETUP, 2, "break1");
5132 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5138 qeth_determine_capabilities(card);
5139 qeth_init_tokens(card);
5140 qeth_init_func_level(card);
5141 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5142 if (rc == -ERESTARTSYS) {
5143 QETH_DBF_TEXT(SETUP, 2, "break2");
5146 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5152 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5153 if (rc == -ERESTARTSYS) {
5154 QETH_DBF_TEXT(SETUP, 2, "break3");
5157 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5163 card->read_or_write_problem = 0;
5164 rc = qeth_mpc_initialize(card);
5166 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5170 rc = qeth_send_startlan(card);
5172 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5173 if (rc == IPA_RC_LAN_OFFLINE) {
5174 dev_warn(&card->gdev->dev,
5175 "The LAN is offline\n");
5176 card->lan_online = 0;
5182 card->lan_online = 1;
5184 card->options.ipa4.supported_funcs = 0;
5185 card->options.ipa6.supported_funcs = 0;
5186 card->options.adp.supported_funcs = 0;
5187 card->options.sbp.supported_funcs = 0;
5188 card->info.diagass_support = 0;
5189 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5192 if (qeth_is_supported(card, IPA_IPV6)) {
5193 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
5197 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5198 rc = qeth_query_setadapterparms(card);
5200 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5204 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5205 rc = qeth_query_setdiagass(card);
5207 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5213 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5214 "an error on the device\n");
5215 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5216 dev_name(&card->gdev->dev), rc);
5219 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5221 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5222 struct sk_buff *skb, int offset, int data_len)
5224 struct page *page = virt_to_page(element->addr);
5225 unsigned int next_frag;
5227 /* first fill the linear space */
5229 unsigned int linear = min(data_len, skb_tailroom(skb));
5231 skb_put_data(skb, element->addr + offset, linear);
5236 /* fall through to add page frag for remaining data */
5239 next_frag = skb_shinfo(skb)->nr_frags;
5241 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5244 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5246 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5249 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5250 struct qeth_qdio_buffer *qethbuffer,
5251 struct qdio_buffer_element **__element, int *__offset,
5252 struct qeth_hdr **hdr)
5254 struct qdio_buffer_element *element = *__element;
5255 struct qdio_buffer *buffer = qethbuffer->buffer;
5256 int offset = *__offset;
5257 struct sk_buff *skb;
5264 /* qeth_hdr must not cross element boundaries */
5265 while (element->length < offset + sizeof(struct qeth_hdr)) {
5266 if (qeth_is_last_sbale(element))
5271 *hdr = element->addr + offset;
5273 offset += sizeof(struct qeth_hdr);
5274 switch ((*hdr)->hdr.l2.id) {
5275 case QETH_HEADER_TYPE_LAYER2:
5276 skb_len = (*hdr)->hdr.l2.pkt_length;
5278 case QETH_HEADER_TYPE_LAYER3:
5279 skb_len = (*hdr)->hdr.l3.length;
5280 headroom = ETH_HLEN;
5282 case QETH_HEADER_TYPE_OSN:
5283 skb_len = (*hdr)->hdr.osn.pdu_length;
5284 headroom = sizeof(struct qeth_hdr);
5293 if (((skb_len >= card->options.rx_sg_cb) &&
5294 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5295 (!atomic_read(&card->force_alloc_skb))) ||
5296 (card->options.cq == QETH_CQ_ENABLED))
5299 if (use_rx_sg && qethbuffer->rx_skb) {
5300 /* QETH_CQ_ENABLED only: */
5301 skb = qethbuffer->rx_skb;
5302 qethbuffer->rx_skb = NULL;
5304 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5306 skb = napi_alloc_skb(&card->napi, linear + headroom);
5311 skb_reserve(skb, headroom);
5313 data_ptr = element->addr + offset;
5315 data_len = min(skb_len, (int)(element->length - offset));
5318 qeth_create_skb_frag(element, skb, offset,
5321 skb_put_data(skb, data_ptr, data_len);
5323 skb_len -= data_len;
5325 if (qeth_is_last_sbale(element)) {
5326 QETH_CARD_TEXT(card, 4, "unexeob");
5327 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5328 dev_kfree_skb_any(skb);
5329 card->stats.rx_errors++;
5334 data_ptr = element->addr;
5339 *__element = element;
5341 if (use_rx_sg && card->options.performance_stats) {
5342 card->perf_stats.sg_skbs_rx++;
5343 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5347 if (net_ratelimit()) {
5348 QETH_CARD_TEXT(card, 2, "noskbmem");
5350 card->stats.rx_dropped++;
5353 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5355 int qeth_poll(struct napi_struct *napi, int budget)
5357 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5359 struct qeth_qdio_buffer *buffer;
5361 int new_budget = budget;
5363 if (card->options.performance_stats) {
5364 card->perf_stats.inbound_cnt++;
5365 card->perf_stats.inbound_start_time = qeth_get_micros();
5369 if (!card->rx.b_count) {
5370 card->rx.qdio_err = 0;
5371 card->rx.b_count = qdio_get_next_buffers(
5372 card->data.ccwdev, 0, &card->rx.b_index,
5373 &card->rx.qdio_err);
5374 if (card->rx.b_count <= 0) {
5375 card->rx.b_count = 0;
5378 card->rx.b_element =
5379 &card->qdio.in_q->bufs[card->rx.b_index]
5380 .buffer->element[0];
5381 card->rx.e_offset = 0;
5384 while (card->rx.b_count) {
5385 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5386 if (!(card->rx.qdio_err &&
5387 qeth_check_qdio_errors(card, buffer->buffer,
5388 card->rx.qdio_err, "qinerr")))
5390 card->discipline->process_rx_buffer(
5391 card, new_budget, &done);
5396 if (card->options.performance_stats)
5397 card->perf_stats.bufs_rec++;
5398 qeth_put_buffer_pool_entry(card,
5399 buffer->pool_entry);
5400 qeth_queue_input_buffer(card, card->rx.b_index);
5402 if (card->rx.b_count) {
5404 (card->rx.b_index + 1) %
5405 QDIO_MAX_BUFFERS_PER_Q;
5406 card->rx.b_element =
5408 ->bufs[card->rx.b_index]
5409 .buffer->element[0];
5410 card->rx.e_offset = 0;
5414 if (work_done >= budget)
5417 new_budget = budget - work_done;
5421 napi_complete_done(napi, work_done);
5422 if (qdio_start_irq(card->data.ccwdev, 0))
5423 napi_schedule(&card->napi);
5425 if (card->options.performance_stats)
5426 card->perf_stats.inbound_time += qeth_get_micros() -
5427 card->perf_stats.inbound_start_time;
5430 EXPORT_SYMBOL_GPL(qeth_poll);
5432 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5434 if (!cmd->hdr.return_code)
5435 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5436 return cmd->hdr.return_code;
5439 int qeth_setassparms_cb(struct qeth_card *card,
5440 struct qeth_reply *reply, unsigned long data)
5442 struct qeth_ipa_cmd *cmd;
5444 QETH_CARD_TEXT(card, 4, "defadpcb");
5446 cmd = (struct qeth_ipa_cmd *) data;
5447 if (cmd->hdr.return_code == 0) {
5448 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5449 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5450 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5451 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5452 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5456 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5458 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5459 enum qeth_ipa_funcs ipa_func,
5460 __u16 cmd_code, __u16 len,
5461 enum qeth_prot_versions prot)
5463 struct qeth_cmd_buffer *iob;
5464 struct qeth_ipa_cmd *cmd;
5466 QETH_CARD_TEXT(card, 4, "getasscm");
5467 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5470 cmd = __ipa_cmd(iob);
5471 cmd->data.setassparms.hdr.assist_no = ipa_func;
5472 cmd->data.setassparms.hdr.length = 8 + len;
5473 cmd->data.setassparms.hdr.command_code = cmd_code;
5474 cmd->data.setassparms.hdr.return_code = 0;
5475 cmd->data.setassparms.hdr.seq_no = 0;
5480 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5482 int qeth_send_setassparms(struct qeth_card *card,
5483 struct qeth_cmd_buffer *iob, __u16 len, long data,
5484 int (*reply_cb)(struct qeth_card *,
5485 struct qeth_reply *, unsigned long),
5489 struct qeth_ipa_cmd *cmd;
5491 QETH_CARD_TEXT(card, 4, "sendassp");
5493 cmd = __ipa_cmd(iob);
5494 if (len <= sizeof(__u32))
5495 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5496 else /* (len > sizeof(__u32)) */
5497 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5499 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5502 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5504 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5505 enum qeth_ipa_funcs ipa_func,
5506 u16 cmd_code, long data,
5507 enum qeth_prot_versions prot)
5511 struct qeth_cmd_buffer *iob;
5513 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5515 length = sizeof(__u32);
5516 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5519 rc = qeth_send_setassparms(card, iob, length, data,
5520 qeth_setassparms_cb, NULL);
5523 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5525 static void qeth_unregister_dbf_views(void)
5528 for (x = 0; x < QETH_DBF_INFOS; x++) {
5529 debug_unregister(qeth_dbf[x].id);
5530 qeth_dbf[x].id = NULL;
5534 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5536 char dbf_txt_buf[32];
5539 if (!debug_level_enabled(id, level))
5541 va_start(args, fmt);
5542 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5544 debug_text_event(id, level, dbf_txt_buf);
5546 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5548 static int qeth_register_dbf_views(void)
5553 for (x = 0; x < QETH_DBF_INFOS; x++) {
5554 /* register the areas */
5555 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5559 if (qeth_dbf[x].id == NULL) {
5560 qeth_unregister_dbf_views();
5564 /* register a view */
5565 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5567 qeth_unregister_dbf_views();
5571 /* set a passing level */
5572 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5578 int qeth_core_load_discipline(struct qeth_card *card,
5579 enum qeth_discipline_id discipline)
5583 mutex_lock(&qeth_mod_mutex);
5584 switch (discipline) {
5585 case QETH_DISCIPLINE_LAYER3:
5586 card->discipline = try_then_request_module(
5587 symbol_get(qeth_l3_discipline), "qeth_l3");
5589 case QETH_DISCIPLINE_LAYER2:
5590 card->discipline = try_then_request_module(
5591 symbol_get(qeth_l2_discipline), "qeth_l2");
5597 if (!card->discipline) {
5598 dev_err(&card->gdev->dev, "There is no kernel module to "
5599 "support discipline %d\n", discipline);
5602 mutex_unlock(&qeth_mod_mutex);
5606 void qeth_core_free_discipline(struct qeth_card *card)
5608 if (card->options.layer2)
5609 symbol_put(qeth_l2_discipline);
5611 symbol_put(qeth_l3_discipline);
5612 card->discipline = NULL;
5615 const struct device_type qeth_generic_devtype = {
5616 .name = "qeth_generic",
5617 .groups = qeth_generic_attr_groups,
5619 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5621 static const struct device_type qeth_osn_devtype = {
5623 .groups = qeth_osn_attr_groups,
5626 #define DBF_NAME_LEN 20
5628 struct qeth_dbf_entry {
5629 char dbf_name[DBF_NAME_LEN];
5630 debug_info_t *dbf_info;
5631 struct list_head dbf_list;
5634 static LIST_HEAD(qeth_dbf_list);
5635 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5637 static debug_info_t *qeth_get_dbf_entry(char *name)
5639 struct qeth_dbf_entry *entry;
5640 debug_info_t *rc = NULL;
5642 mutex_lock(&qeth_dbf_list_mutex);
5643 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5644 if (strcmp(entry->dbf_name, name) == 0) {
5645 rc = entry->dbf_info;
5649 mutex_unlock(&qeth_dbf_list_mutex);
5653 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5655 struct qeth_dbf_entry *new_entry;
5657 card->debug = debug_register(name, 2, 1, 8);
5659 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5662 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5664 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5667 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5668 new_entry->dbf_info = card->debug;
5669 mutex_lock(&qeth_dbf_list_mutex);
5670 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5671 mutex_unlock(&qeth_dbf_list_mutex);
5676 debug_unregister(card->debug);
5681 static void qeth_clear_dbf_list(void)
5683 struct qeth_dbf_entry *entry, *tmp;
5685 mutex_lock(&qeth_dbf_list_mutex);
5686 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5687 list_del(&entry->dbf_list);
5688 debug_unregister(entry->dbf_info);
5691 mutex_unlock(&qeth_dbf_list_mutex);
5694 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5696 struct net_device *dev;
5698 switch (card->info.type) {
5699 case QETH_CARD_TYPE_IQD:
5700 dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup);
5702 case QETH_CARD_TYPE_OSN:
5703 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5706 dev = alloc_etherdev(0);
5712 dev->ml_priv = card;
5713 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5714 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5715 /* initialized when device first goes online: */
5718 SET_NETDEV_DEV(dev, &card->gdev->dev);
5719 netif_carrier_off(dev);
5721 if (!IS_OSN(card)) {
5722 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5723 dev->hw_features |= NETIF_F_SG;
5724 dev->vlan_features |= NETIF_F_SG;
5726 dev->features |= NETIF_F_SG;
5732 struct net_device *qeth_clone_netdev(struct net_device *orig)
5734 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5739 clone->dev_port = orig->dev_port;
5743 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5745 struct qeth_card *card;
5748 enum qeth_discipline_id enforced_disc;
5749 unsigned long flags;
5750 char dbf_name[DBF_NAME_LEN];
5752 QETH_DBF_TEXT(SETUP, 2, "probedev");
5755 if (!get_device(dev))
5758 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5760 card = qeth_alloc_card(gdev);
5762 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5767 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5768 dev_name(&gdev->dev));
5769 card->debug = qeth_get_dbf_entry(dbf_name);
5771 rc = qeth_add_dbf_entry(card, dbf_name);
5776 dev_set_drvdata(&gdev->dev, card);
5777 qeth_setup_card(card);
5778 rc = qeth_update_from_chp_desc(card);
5782 card->dev = qeth_alloc_netdev(card);
5788 qeth_determine_capabilities(card);
5789 enforced_disc = qeth_enforce_discipline(card);
5790 switch (enforced_disc) {
5791 case QETH_DISCIPLINE_UNDETERMINED:
5792 gdev->dev.type = &qeth_generic_devtype;
5795 card->info.layer_enforced = true;
5796 rc = qeth_core_load_discipline(card, enforced_disc);
5800 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5801 ? card->discipline->devtype
5802 : &qeth_osn_devtype;
5803 rc = card->discipline->setup(card->gdev);
5809 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5810 list_add_tail(&card->list, &qeth_core_card_list.list);
5811 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5815 qeth_core_free_discipline(card);
5817 free_netdev(card->dev);
5820 qeth_core_free_card(card);
5826 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5828 unsigned long flags;
5829 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5831 QETH_DBF_TEXT(SETUP, 2, "removedv");
5833 if (card->discipline) {
5834 card->discipline->remove(gdev);
5835 qeth_core_free_discipline(card);
5838 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5839 list_del(&card->list);
5840 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5841 free_netdev(card->dev);
5842 qeth_core_free_card(card);
5843 dev_set_drvdata(&gdev->dev, NULL);
5844 put_device(&gdev->dev);
5847 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5849 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5851 enum qeth_discipline_id def_discipline;
5853 if (!card->discipline) {
5854 if (card->info.type == QETH_CARD_TYPE_IQD)
5855 def_discipline = QETH_DISCIPLINE_LAYER3;
5857 def_discipline = QETH_DISCIPLINE_LAYER2;
5858 rc = qeth_core_load_discipline(card, def_discipline);
5861 rc = card->discipline->setup(card->gdev);
5863 qeth_core_free_discipline(card);
5867 rc = card->discipline->set_online(gdev);
5872 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5874 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5875 return card->discipline->set_offline(gdev);
5878 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5880 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5881 qeth_set_allowed_threads(card, 0, 1);
5882 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5883 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5884 qeth_qdio_clear_card(card, 0);
5885 qeth_clear_qdio_buffers(card);
5886 qdio_free(CARD_DDEV(card));
5889 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5891 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5892 if (card->discipline && card->discipline->freeze)
5893 return card->discipline->freeze(gdev);
5897 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5899 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5900 if (card->discipline && card->discipline->thaw)
5901 return card->discipline->thaw(gdev);
5905 static int qeth_core_restore(struct ccwgroup_device *gdev)
5907 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5908 if (card->discipline && card->discipline->restore)
5909 return card->discipline->restore(gdev);
5913 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5918 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5921 return err ? err : count;
5923 static DRIVER_ATTR_WO(group);
5925 static struct attribute *qeth_drv_attrs[] = {
5926 &driver_attr_group.attr,
5929 static struct attribute_group qeth_drv_attr_group = {
5930 .attrs = qeth_drv_attrs,
5932 static const struct attribute_group *qeth_drv_attr_groups[] = {
5933 &qeth_drv_attr_group,
5937 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5939 .groups = qeth_drv_attr_groups,
5940 .owner = THIS_MODULE,
5943 .ccw_driver = &qeth_ccw_driver,
5944 .setup = qeth_core_probe_device,
5945 .remove = qeth_core_remove_device,
5946 .set_online = qeth_core_set_online,
5947 .set_offline = qeth_core_set_offline,
5948 .shutdown = qeth_core_shutdown,
5951 .freeze = qeth_core_freeze,
5952 .thaw = qeth_core_thaw,
5953 .restore = qeth_core_restore,
5956 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5958 struct qeth_card *card = dev->ml_priv;
5959 struct mii_ioctl_data *mii_data;
5965 if (!qeth_card_hw_is_reachable(card))
5968 if (card->info.type == QETH_CARD_TYPE_OSN)
5972 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5973 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5975 case SIOC_QETH_GET_CARD_TYPE:
5976 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5977 card->info.type == QETH_CARD_TYPE_OSM ||
5978 card->info.type == QETH_CARD_TYPE_OSX) &&
5979 !card->info.guestlan)
5984 mii_data = if_mii(rq);
5985 mii_data->phy_id = 0;
5988 mii_data = if_mii(rq);
5989 if (mii_data->phy_id != 0)
5992 mii_data->val_out = qeth_mdio_read(dev,
5993 mii_data->phy_id, mii_data->reg_num);
5995 case SIOC_QETH_QUERY_OAT:
5996 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5999 if (card->discipline->do_ioctl)
6000 rc = card->discipline->do_ioctl(dev, rq, cmd);
6005 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
6008 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
6011 const char str[ETH_GSTRING_LEN];
6012 } qeth_ethtool_stats_keys[] = {
6017 {"tx skbs no packing"},
6018 {"tx buffers no packing"},
6019 {"tx skbs packing"},
6020 {"tx buffers packing"},
6022 {"tx buffer elements"},
6023 /* 10 */{"rx sg skbs"},
6025 {"rx sg page allocs"},
6026 {"tx large kbytes"},
6028 {"tx pk state ch n->p"},
6029 {"tx pk state ch p->n"},
6030 {"tx pk watermark low"},
6031 {"tx pk watermark high"},
6032 {"queue 0 buffer usage"},
6033 /* 20 */{"queue 1 buffer usage"},
6034 {"queue 2 buffer usage"},
6035 {"queue 3 buffer usage"},
6038 {"rx do_QDIO time"},
6039 {"rx do_QDIO count"},
6040 {"tx handler time"},
6041 {"tx handler count"},
6043 /* 30 */{"tx count"},
6044 {"tx do_QDIO time"},
6045 {"tx do_QDIO count"},
6049 {"cq handler count"},
6050 {"cq handler time"},
6054 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6056 switch (stringset) {
6058 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6063 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6065 void qeth_core_get_ethtool_stats(struct net_device *dev,
6066 struct ethtool_stats *stats, u64 *data)
6068 struct qeth_card *card = dev->ml_priv;
6069 data[0] = card->stats.rx_packets -
6070 card->perf_stats.initial_rx_packets;
6071 data[1] = card->perf_stats.bufs_rec;
6072 data[2] = card->stats.tx_packets -
6073 card->perf_stats.initial_tx_packets;
6074 data[3] = card->perf_stats.bufs_sent;
6075 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6076 - card->perf_stats.skbs_sent_pack;
6077 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6078 data[6] = card->perf_stats.skbs_sent_pack;
6079 data[7] = card->perf_stats.bufs_sent_pack;
6080 data[8] = card->perf_stats.sg_skbs_sent;
6081 data[9] = card->perf_stats.buf_elements_sent;
6082 data[10] = card->perf_stats.sg_skbs_rx;
6083 data[11] = card->perf_stats.sg_frags_rx;
6084 data[12] = card->perf_stats.sg_alloc_page_rx;
6085 data[13] = (card->perf_stats.large_send_bytes >> 10);
6086 data[14] = card->perf_stats.large_send_cnt;
6087 data[15] = card->perf_stats.sc_dp_p;
6088 data[16] = card->perf_stats.sc_p_dp;
6089 data[17] = QETH_LOW_WATERMARK_PACK;
6090 data[18] = QETH_HIGH_WATERMARK_PACK;
6091 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6092 data[20] = (card->qdio.no_out_queues > 1) ?
6093 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6094 data[21] = (card->qdio.no_out_queues > 2) ?
6095 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6096 data[22] = (card->qdio.no_out_queues > 3) ?
6097 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6098 data[23] = card->perf_stats.inbound_time;
6099 data[24] = card->perf_stats.inbound_cnt;
6100 data[25] = card->perf_stats.inbound_do_qdio_time;
6101 data[26] = card->perf_stats.inbound_do_qdio_cnt;
6102 data[27] = card->perf_stats.outbound_handler_time;
6103 data[28] = card->perf_stats.outbound_handler_cnt;
6104 data[29] = card->perf_stats.outbound_time;
6105 data[30] = card->perf_stats.outbound_cnt;
6106 data[31] = card->perf_stats.outbound_do_qdio_time;
6107 data[32] = card->perf_stats.outbound_do_qdio_cnt;
6108 data[33] = card->perf_stats.tx_csum;
6109 data[34] = card->perf_stats.tx_lin;
6110 data[35] = card->perf_stats.tx_linfail;
6111 data[36] = card->perf_stats.cq_cnt;
6112 data[37] = card->perf_stats.cq_time;
6113 data[38] = card->perf_stats.rx_csum;
6115 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6117 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6119 switch (stringset) {
6121 memcpy(data, &qeth_ethtool_stats_keys,
6122 sizeof(qeth_ethtool_stats_keys));
6129 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6131 void qeth_core_get_drvinfo(struct net_device *dev,
6132 struct ethtool_drvinfo *info)
6134 struct qeth_card *card = dev->ml_priv;
6136 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6137 sizeof(info->driver));
6138 strlcpy(info->version, "1.0", sizeof(info->version));
6139 strlcpy(info->fw_version, card->info.mcl_level,
6140 sizeof(info->fw_version));
6141 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6142 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6144 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6146 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6147 /* Autoneg and full-duplex are supported and advertised unconditionally. */
6148 /* Always advertise and support all speeds up to specified, and only one */
6149 /* specified port type. */
6150 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6151 int maxspeed, int porttype)
6153 ethtool_link_ksettings_zero_link_mode(cmd, supported);
6154 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6155 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6157 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6158 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6162 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6163 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6166 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6167 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6170 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6171 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6175 /* fallthrough from high to low, to select all legal speeds: */
6178 ethtool_link_ksettings_add_link_mode(cmd, supported,
6180 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6183 ethtool_link_ksettings_add_link_mode(cmd, supported,
6185 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6187 ethtool_link_ksettings_add_link_mode(cmd, supported,
6189 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,
6196 ethtool_link_ksettings_add_link_mode(cmd, supported,
6198 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6201 ethtool_link_ksettings_add_link_mode(cmd, supported,
6203 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6205 ethtool_link_ksettings_add_link_mode(cmd, supported,
6207 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6209 /* end fallthrough */
6212 ethtool_link_ksettings_add_link_mode(cmd, supported,
6214 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6216 ethtool_link_ksettings_add_link_mode(cmd, supported,
6218 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6224 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6225 struct ethtool_link_ksettings *cmd)
6227 struct qeth_card *card = netdev->ml_priv;
6228 enum qeth_link_types link_type;
6229 struct carrier_info carrier_info;
6232 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6233 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6235 link_type = card->info.link_type;
6237 cmd->base.duplex = DUPLEX_FULL;
6238 cmd->base.autoneg = AUTONEG_ENABLE;
6239 cmd->base.phy_address = 0;
6240 cmd->base.mdio_support = 0;
6241 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6242 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6244 switch (link_type) {
6245 case QETH_LINK_TYPE_FAST_ETH:
6246 case QETH_LINK_TYPE_LANE_ETH100:
6247 cmd->base.speed = SPEED_100;
6248 cmd->base.port = PORT_TP;
6250 case QETH_LINK_TYPE_GBIT_ETH:
6251 case QETH_LINK_TYPE_LANE_ETH1000:
6252 cmd->base.speed = SPEED_1000;
6253 cmd->base.port = PORT_FIBRE;
6255 case QETH_LINK_TYPE_10GBIT_ETH:
6256 cmd->base.speed = SPEED_10000;
6257 cmd->base.port = PORT_FIBRE;
6260 cmd->base.speed = SPEED_10;
6261 cmd->base.port = PORT_TP;
6263 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6265 /* Check if we can obtain more accurate information. */
6266 /* If QUERY_CARD_INFO command is not supported or fails, */
6267 /* just return the heuristics that was filled above. */
6268 if (!qeth_card_hw_is_reachable(card))
6270 rc = qeth_query_card_info(card, &carrier_info);
6271 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6273 if (rc) /* report error from the hardware operation */
6275 /* on success, fill in the information got from the hardware */
6278 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6279 carrier_info.card_type,
6280 carrier_info.port_mode,
6281 carrier_info.port_speed);
6283 /* Update attributes for which we've obtained more authoritative */
6284 /* information, leave the rest the way they where filled above. */
6285 switch (carrier_info.card_type) {
6286 case CARD_INFO_TYPE_1G_COPPER_A:
6287 case CARD_INFO_TYPE_1G_COPPER_B:
6288 cmd->base.port = PORT_TP;
6289 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6291 case CARD_INFO_TYPE_1G_FIBRE_A:
6292 case CARD_INFO_TYPE_1G_FIBRE_B:
6293 cmd->base.port = PORT_FIBRE;
6294 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6296 case CARD_INFO_TYPE_10G_FIBRE_A:
6297 case CARD_INFO_TYPE_10G_FIBRE_B:
6298 cmd->base.port = PORT_FIBRE;
6299 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6303 switch (carrier_info.port_mode) {
6304 case CARD_INFO_PORTM_FULLDUPLEX:
6305 cmd->base.duplex = DUPLEX_FULL;
6307 case CARD_INFO_PORTM_HALFDUPLEX:
6308 cmd->base.duplex = DUPLEX_HALF;
6312 switch (carrier_info.port_speed) {
6313 case CARD_INFO_PORTS_10M:
6314 cmd->base.speed = SPEED_10;
6316 case CARD_INFO_PORTS_100M:
6317 cmd->base.speed = SPEED_100;
6319 case CARD_INFO_PORTS_1G:
6320 cmd->base.speed = SPEED_1000;
6322 case CARD_INFO_PORTS_10G:
6323 cmd->base.speed = SPEED_10000;
6329 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6331 /* Callback to handle checksum offload command reply from OSA card.
6332 * Verify that required features have been enabled on the card.
6333 * Return error in hdr->return_code as this value is checked by caller.
6335 * Always returns zero to indicate no further messages from the OSA card.
6337 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6338 struct qeth_reply *reply,
6341 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6342 struct qeth_checksum_cmd *chksum_cb =
6343 (struct qeth_checksum_cmd *)reply->param;
6345 QETH_CARD_TEXT(card, 4, "chkdoccb");
6346 if (qeth_setassparms_inspect_rc(cmd))
6349 memset(chksum_cb, 0, sizeof(*chksum_cb));
6350 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6351 chksum_cb->supported =
6352 cmd->data.setassparms.data.chksum.supported;
6353 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6355 if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6356 chksum_cb->supported =
6357 cmd->data.setassparms.data.chksum.supported;
6358 chksum_cb->enabled =
6359 cmd->data.setassparms.data.chksum.enabled;
6360 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6361 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6366 /* Send command to OSA card and check results. */
6367 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6368 enum qeth_ipa_funcs ipa_func,
6369 __u16 cmd_code, long data,
6370 struct qeth_checksum_cmd *chksum_cb,
6371 enum qeth_prot_versions prot)
6373 struct qeth_cmd_buffer *iob;
6376 QETH_CARD_TEXT(card, 4, "chkdocmd");
6377 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6378 sizeof(__u32), prot);
6380 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6381 qeth_ipa_checksum_run_cmd_cb,
6386 static int qeth_send_checksum_on(struct qeth_card *card, int cstype,
6387 enum qeth_prot_versions prot)
6389 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
6390 struct qeth_checksum_cmd chksum_cb;
6393 if (prot == QETH_PROT_IPV4)
6394 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
6395 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6398 if ((required_features & chksum_cb.supported) !=
6401 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6402 cstype == IPA_INBOUND_CHECKSUM)
6403 dev_warn(&card->gdev->dev,
6404 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6405 QETH_CARD_IFNAME(card));
6408 qeth_send_simple_setassparms_prot(card, cstype,
6409 IPA_CMD_ASS_STOP, 0, prot);
6410 dev_warn(&card->gdev->dev,
6411 "Starting HW IPv%d checksumming for %s failed, using SW checksumming\n",
6412 prot, QETH_CARD_IFNAME(card));
6415 rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6416 chksum_cb.supported, &chksum_cb,
6419 if ((required_features & chksum_cb.enabled) !=
6424 qeth_send_simple_setassparms_prot(card, cstype,
6425 IPA_CMD_ASS_STOP, 0, prot);
6426 dev_warn(&card->gdev->dev,
6427 "Enabling HW IPv%d checksumming for %s failed, using SW checksumming\n",
6428 prot, QETH_CARD_IFNAME(card));
6432 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
6433 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
6437 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
6438 enum qeth_prot_versions prot)
6440 int rc = (on) ? qeth_send_checksum_on(card, cstype, prot)
6441 : qeth_send_simple_setassparms_prot(card, cstype,
6442 IPA_CMD_ASS_STOP, 0,
6444 return rc ? -EIO : 0;
6447 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6451 QETH_CARD_TEXT(card, 3, "sttso");
6454 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6455 IPA_CMD_ASS_START, 0);
6457 dev_warn(&card->gdev->dev,
6458 "Starting outbound TCP segmentation offload for %s failed\n",
6459 QETH_CARD_IFNAME(card));
6462 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6464 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6465 IPA_CMD_ASS_STOP, 0);
6470 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6472 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6475 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6476 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6478 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6479 /* no/one Offload Assist available, so the rc is trivial */
6482 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6486 /* enable: success if any Assist is active */
6487 return (rc_ipv6) ? rc_ipv4 : 0;
6489 /* disable: failure if any Assist is still active */
6490 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6493 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO | \
6496 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
6497 * @dev: a net_device
6499 void qeth_enable_hw_features(struct net_device *dev)
6501 struct qeth_card *card = dev->ml_priv;
6502 netdev_features_t features;
6505 features = dev->features;
6506 /* force-off any feature that needs an IPA sequence.
6507 * netdev_update_features() will restart them.
6509 dev->features &= ~QETH_HW_FEATURES;
6510 netdev_update_features(dev);
6511 if (features != dev->features)
6512 dev_warn(&card->gdev->dev,
6513 "Device recovery failed to restore all offload features\n");
6516 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6518 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6520 struct qeth_card *card = dev->ml_priv;
6521 netdev_features_t changed = dev->features ^ features;
6524 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6525 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6527 if ((changed & NETIF_F_IP_CSUM)) {
6528 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6529 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6531 changed ^= NETIF_F_IP_CSUM;
6533 if (changed & NETIF_F_IPV6_CSUM) {
6534 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6535 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6537 changed ^= NETIF_F_IPV6_CSUM;
6539 if (changed & NETIF_F_RXCSUM) {
6540 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6542 changed ^= NETIF_F_RXCSUM;
6544 if ((changed & NETIF_F_TSO)) {
6545 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6547 changed ^= NETIF_F_TSO;
6550 /* everything changed successfully? */
6551 if ((dev->features ^ features) == changed)
6553 /* something went wrong. save changed features and return error */
6554 dev->features ^= changed;
6557 EXPORT_SYMBOL_GPL(qeth_set_features);
6559 netdev_features_t qeth_fix_features(struct net_device *dev,
6560 netdev_features_t features)
6562 struct qeth_card *card = dev->ml_priv;
6564 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6565 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6566 features &= ~NETIF_F_IP_CSUM;
6567 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6568 features &= ~NETIF_F_IPV6_CSUM;
6569 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6570 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6571 features &= ~NETIF_F_RXCSUM;
6572 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6573 features &= ~NETIF_F_TSO;
6574 /* if the card isn't up, remove features that require hw changes */
6575 if (card->state == CARD_STATE_DOWN ||
6576 card->state == CARD_STATE_RECOVER)
6577 features &= ~QETH_HW_FEATURES;
6578 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6581 EXPORT_SYMBOL_GPL(qeth_fix_features);
6583 netdev_features_t qeth_features_check(struct sk_buff *skb,
6584 struct net_device *dev,
6585 netdev_features_t features)
6587 /* GSO segmentation builds skbs with
6588 * a (small) linear part for the headers, and
6589 * page frags for the data.
6590 * Compared to a linear skb, the header-only part consumes an
6591 * additional buffer element. This reduces buffer utilization, and
6592 * hurts throughput. So compress small segments into one element.
6594 if (netif_needs_gso(skb, features)) {
6595 /* match skb_segment(): */
6596 unsigned int doffset = skb->data - skb_mac_header(skb);
6597 unsigned int hsize = skb_shinfo(skb)->gso_size;
6598 unsigned int hroom = skb_headroom(skb);
6600 /* linearize only if resulting skb allocations are order-0: */
6601 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6602 features &= ~NETIF_F_SG;
6605 return vlan_features_check(skb, features);
6607 EXPORT_SYMBOL_GPL(qeth_features_check);
6609 static int __init qeth_core_init(void)
6613 pr_info("loading core functions\n");
6614 INIT_LIST_HEAD(&qeth_core_card_list.list);
6615 INIT_LIST_HEAD(&qeth_dbf_list);
6616 rwlock_init(&qeth_core_card_list.rwlock);
6617 mutex_init(&qeth_mod_mutex);
6619 qeth_wq = create_singlethread_workqueue("qeth_wq");
6625 rc = qeth_register_dbf_views();
6628 qeth_core_root_dev = root_device_register("qeth");
6629 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6632 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6633 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6634 if (!qeth_core_header_cache) {
6638 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6639 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6640 if (!qeth_qdio_outbuf_cache) {
6644 rc = ccw_driver_register(&qeth_ccw_driver);
6647 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6654 ccw_driver_unregister(&qeth_ccw_driver);
6656 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6658 kmem_cache_destroy(qeth_core_header_cache);
6660 root_device_unregister(qeth_core_root_dev);
6662 qeth_unregister_dbf_views();
6664 destroy_workqueue(qeth_wq);
6666 pr_err("Initializing the qeth device driver failed\n");
6670 static void __exit qeth_core_exit(void)
6672 qeth_clear_dbf_list();
6673 destroy_workqueue(qeth_wq);
6674 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6675 ccw_driver_unregister(&qeth_ccw_driver);
6676 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6677 kmem_cache_destroy(qeth_core_header_cache);
6678 root_device_unregister(qeth_core_root_dev);
6679 qeth_unregister_dbf_views();
6680 pr_info("core functions removed\n");
6683 module_init(qeth_core_init);
6684 module_exit(qeth_core_exit);
6685 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6686 MODULE_DESCRIPTION("qeth core functions");
6687 MODULE_LICENSE("GPL");