2 * Copyright IBM Corp. 2007, 2009
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 #define KMSG_COMPONENT "qeth"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/string.h>
15 #include <linux/errno.h>
16 #include <linux/kernel.h>
18 #include <linux/tcp.h>
19 #include <linux/mii.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <linux/if_vlan.h>
23 #include <linux/netdevice.h>
24 #include <linux/netdev_features.h>
25 #include <linux/skbuff.h>
26 #include <linux/vmalloc.h>
28 #include <net/iucv/af_iucv.h>
29 #include <net/dsfield.h>
31 #include <asm/ebcdic.h>
32 #include <asm/chpid.h>
34 #include <asm/sysinfo.h>
35 #include <asm/compat.h>
37 #include "qeth_core.h"
39 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
40 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
42 [QETH_DBF_SETUP] = {"qeth_setup",
43 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
44 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
45 &debug_sprintf_view, NULL},
46 [QETH_DBF_CTRL] = {"qeth_control",
47 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
49 EXPORT_SYMBOL_GPL(qeth_dbf);
51 struct qeth_card_list_struct qeth_core_card_list;
52 EXPORT_SYMBOL_GPL(qeth_core_card_list);
53 struct kmem_cache *qeth_core_header_cache;
54 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
55 static struct kmem_cache *qeth_qdio_outbuf_cache;
57 static struct device *qeth_core_root_dev;
58 static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
59 static struct lock_class_key qdio_out_skb_queue_key;
60 static struct mutex qeth_mod_mutex;
62 static void qeth_send_control_data_cb(struct qeth_channel *,
63 struct qeth_cmd_buffer *);
64 static int qeth_issue_next_read(struct qeth_card *);
65 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
66 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
67 static void qeth_free_buffer_pool(struct qeth_card *);
68 static int qeth_qdio_establish(struct qeth_card *);
69 static void qeth_free_qdio_buffers(struct qeth_card *);
70 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
71 struct qeth_qdio_out_buffer *buf,
72 enum iucv_tx_notify notification);
73 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
74 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
75 struct qeth_qdio_out_buffer *buf,
76 enum qeth_qdio_buffer_states newbufstate);
77 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
79 struct workqueue_struct *qeth_wq;
80 EXPORT_SYMBOL_GPL(qeth_wq);
82 int qeth_card_hw_is_reachable(struct qeth_card *card)
84 return (card->state == CARD_STATE_SOFTSETUP) ||
85 (card->state == CARD_STATE_UP);
87 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
89 static void qeth_close_dev_handler(struct work_struct *work)
91 struct qeth_card *card;
93 card = container_of(work, struct qeth_card, close_dev_work);
94 QETH_CARD_TEXT(card, 2, "cldevhdl");
98 ccwgroup_set_offline(card->gdev);
101 void qeth_close_dev(struct qeth_card *card)
103 QETH_CARD_TEXT(card, 2, "cldevsubm");
104 queue_work(qeth_wq, &card->close_dev_work);
106 EXPORT_SYMBOL_GPL(qeth_close_dev);
108 static inline const char *qeth_get_cardname(struct qeth_card *card)
110 if (card->info.guestlan) {
111 switch (card->info.type) {
112 case QETH_CARD_TYPE_OSD:
113 return " Virtual NIC QDIO";
114 case QETH_CARD_TYPE_IQD:
115 return " Virtual NIC Hiper";
116 case QETH_CARD_TYPE_OSM:
117 return " Virtual NIC QDIO - OSM";
118 case QETH_CARD_TYPE_OSX:
119 return " Virtual NIC QDIO - OSX";
124 switch (card->info.type) {
125 case QETH_CARD_TYPE_OSD:
126 return " OSD Express";
127 case QETH_CARD_TYPE_IQD:
128 return " HiperSockets";
129 case QETH_CARD_TYPE_OSN:
131 case QETH_CARD_TYPE_OSM:
133 case QETH_CARD_TYPE_OSX:
142 /* max length to be returned: 14 */
143 const char *qeth_get_cardname_short(struct qeth_card *card)
145 if (card->info.guestlan) {
146 switch (card->info.type) {
147 case QETH_CARD_TYPE_OSD:
148 return "Virt.NIC QDIO";
149 case QETH_CARD_TYPE_IQD:
150 return "Virt.NIC Hiper";
151 case QETH_CARD_TYPE_OSM:
152 return "Virt.NIC OSM";
153 case QETH_CARD_TYPE_OSX:
154 return "Virt.NIC OSX";
159 switch (card->info.type) {
160 case QETH_CARD_TYPE_OSD:
161 switch (card->info.link_type) {
162 case QETH_LINK_TYPE_FAST_ETH:
164 case QETH_LINK_TYPE_HSTR:
166 case QETH_LINK_TYPE_GBIT_ETH:
168 case QETH_LINK_TYPE_10GBIT_ETH:
170 case QETH_LINK_TYPE_LANE_ETH100:
171 return "OSD_FE_LANE";
172 case QETH_LINK_TYPE_LANE_TR:
173 return "OSD_TR_LANE";
174 case QETH_LINK_TYPE_LANE_ETH1000:
175 return "OSD_GbE_LANE";
176 case QETH_LINK_TYPE_LANE:
177 return "OSD_ATM_LANE";
179 return "OSD_Express";
181 case QETH_CARD_TYPE_IQD:
182 return "HiperSockets";
183 case QETH_CARD_TYPE_OSN:
185 case QETH_CARD_TYPE_OSM:
187 case QETH_CARD_TYPE_OSX:
196 void qeth_set_recovery_task(struct qeth_card *card)
198 card->recovery_task = current;
200 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
202 void qeth_clear_recovery_task(struct qeth_card *card)
204 card->recovery_task = NULL;
206 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
208 static bool qeth_is_recovery_task(const struct qeth_card *card)
210 return card->recovery_task == current;
213 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
214 int clear_start_mask)
218 spin_lock_irqsave(&card->thread_mask_lock, flags);
219 card->thread_allowed_mask = threads;
220 if (clear_start_mask)
221 card->thread_start_mask &= threads;
222 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
223 wake_up(&card->wait_q);
225 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
227 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
232 spin_lock_irqsave(&card->thread_mask_lock, flags);
233 rc = (card->thread_running_mask & threads);
234 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
237 EXPORT_SYMBOL_GPL(qeth_threads_running);
239 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
241 if (qeth_is_recovery_task(card))
243 return wait_event_interruptible(card->wait_q,
244 qeth_threads_running(card, threads) == 0);
246 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
248 void qeth_clear_working_pool_list(struct qeth_card *card)
250 struct qeth_buffer_pool_entry *pool_entry, *tmp;
252 QETH_CARD_TEXT(card, 5, "clwrklst");
253 list_for_each_entry_safe(pool_entry, tmp,
254 &card->qdio.in_buf_pool.entry_list, list){
255 list_del(&pool_entry->list);
258 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
260 static int qeth_alloc_buffer_pool(struct qeth_card *card)
262 struct qeth_buffer_pool_entry *pool_entry;
266 QETH_CARD_TEXT(card, 5, "alocpool");
267 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
268 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
270 qeth_free_buffer_pool(card);
273 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
274 ptr = (void *) __get_free_page(GFP_KERNEL);
277 free_page((unsigned long)
278 pool_entry->elements[--j]);
280 qeth_free_buffer_pool(card);
283 pool_entry->elements[j] = ptr;
285 list_add(&pool_entry->init_list,
286 &card->qdio.init_pool.entry_list);
291 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
293 QETH_CARD_TEXT(card, 2, "realcbp");
295 if ((card->state != CARD_STATE_DOWN) &&
296 (card->state != CARD_STATE_RECOVER))
299 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
300 qeth_clear_working_pool_list(card);
301 qeth_free_buffer_pool(card);
302 card->qdio.in_buf_pool.buf_count = bufcnt;
303 card->qdio.init_pool.buf_count = bufcnt;
304 return qeth_alloc_buffer_pool(card);
306 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
308 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
313 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
317 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
319 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
325 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
330 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
331 q->bufs[i].buffer = q->qdio_bufs[i];
333 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
337 static inline int qeth_cq_init(struct qeth_card *card)
341 if (card->options.cq == QETH_CQ_ENABLED) {
342 QETH_DBF_TEXT(SETUP, 2, "cqinit");
343 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
344 QDIO_MAX_BUFFERS_PER_Q);
345 card->qdio.c_q->next_buf_to_init = 127;
346 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
347 card->qdio.no_in_queues - 1, 0,
350 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
359 static inline int qeth_alloc_cq(struct qeth_card *card)
363 if (card->options.cq == QETH_CQ_ENABLED) {
365 struct qdio_outbuf_state *outbuf_states;
367 QETH_DBF_TEXT(SETUP, 2, "cqon");
368 card->qdio.c_q = qeth_alloc_qdio_queue();
369 if (!card->qdio.c_q) {
373 card->qdio.no_in_queues = 2;
374 card->qdio.out_bufstates =
375 kzalloc(card->qdio.no_out_queues *
376 QDIO_MAX_BUFFERS_PER_Q *
377 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
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 inline 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 inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
417 enum iucv_tx_notify n;
421 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
427 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
428 TX_NOTIFY_UNREACHABLE;
431 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
432 TX_NOTIFY_GENERALERROR;
439 static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
440 int bidx, int forced_cleanup)
442 if (q->card->options.cq != QETH_CQ_ENABLED)
445 if (q->bufs[bidx]->next_pending != NULL) {
446 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
447 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
450 if (forced_cleanup ||
451 atomic_read(&c->state) ==
452 QETH_QDIO_BUF_HANDLED_DELAYED) {
453 struct qeth_qdio_out_buffer *f = c;
454 QETH_CARD_TEXT(f->q->card, 5, "fp");
455 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
456 /* release here to avoid interleaving between
457 outbound tasklet and inbound tasklet
458 regarding notifications and lifecycle */
459 qeth_release_skbs(c);
462 WARN_ON_ONCE(head->next_pending != f);
463 head->next_pending = c;
464 kmem_cache_free(qeth_qdio_outbuf_cache, f);
472 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
473 QETH_QDIO_BUF_HANDLED_DELAYED)) {
474 /* for recovery situations */
475 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
476 qeth_init_qdio_out_buf(q, bidx);
477 QETH_CARD_TEXT(q->card, 2, "clprecov");
482 static inline void qeth_qdio_handle_aob(struct qeth_card *card,
483 unsigned long phys_aob_addr) {
485 struct qeth_qdio_out_buffer *buffer;
486 enum iucv_tx_notify notification;
488 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
489 QETH_CARD_TEXT(card, 5, "haob");
490 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
491 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
492 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
494 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
495 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
496 notification = TX_NOTIFY_OK;
498 WARN_ON_ONCE(atomic_read(&buffer->state) !=
499 QETH_QDIO_BUF_PENDING);
500 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
501 notification = TX_NOTIFY_DELAYED_OK;
504 if (aob->aorc != 0) {
505 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
506 notification = qeth_compute_cq_notification(aob->aorc, 1);
508 qeth_notify_skbs(buffer->q, buffer, notification);
511 qeth_clear_output_buffer(buffer->q, buffer,
512 QETH_QDIO_BUF_HANDLED_DELAYED);
514 /* from here on: do not touch buffer anymore */
515 qdio_release_aob(aob);
518 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
520 return card->options.cq == QETH_CQ_ENABLED &&
521 card->qdio.c_q != NULL &&
523 queue == card->qdio.no_in_queues - 1;
526 static int __qeth_issue_next_read(struct qeth_card *card)
529 struct qeth_cmd_buffer *iob;
531 QETH_CARD_TEXT(card, 5, "issnxrd");
532 if (card->read.state != CH_STATE_UP)
534 iob = qeth_get_buffer(&card->read);
536 dev_warn(&card->gdev->dev, "The qeth device driver "
537 "failed to recover an error on the device\n");
538 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
539 "available\n", dev_name(&card->gdev->dev));
542 qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
543 QETH_CARD_TEXT(card, 6, "noirqpnd");
544 rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
547 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
548 "rc=%i\n", dev_name(&card->gdev->dev), rc);
549 atomic_set(&card->read.irq_pending, 0);
550 card->read_or_write_problem = 1;
551 qeth_schedule_recovery(card);
552 wake_up(&card->wait_q);
557 static int qeth_issue_next_read(struct qeth_card *card)
561 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
562 ret = __qeth_issue_next_read(card);
563 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
568 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
570 struct qeth_reply *reply;
572 reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
574 atomic_set(&reply->refcnt, 1);
575 atomic_set(&reply->received, 0);
581 static void qeth_get_reply(struct qeth_reply *reply)
583 WARN_ON(atomic_read(&reply->refcnt) <= 0);
584 atomic_inc(&reply->refcnt);
587 static void qeth_put_reply(struct qeth_reply *reply)
589 WARN_ON(atomic_read(&reply->refcnt) <= 0);
590 if (atomic_dec_and_test(&reply->refcnt))
594 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
595 struct qeth_card *card)
598 int com = cmd->hdr.command;
599 ipa_name = qeth_get_ipa_cmd_name(com);
601 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
603 ipa_name, com, dev_name(&card->gdev->dev),
604 QETH_CARD_IFNAME(card), rc,
605 qeth_get_ipa_msg(rc));
607 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
608 ipa_name, com, dev_name(&card->gdev->dev),
609 QETH_CARD_IFNAME(card));
612 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
613 struct qeth_cmd_buffer *iob)
615 struct qeth_ipa_cmd *cmd = NULL;
617 QETH_CARD_TEXT(card, 5, "chkipad");
618 if (IS_IPA(iob->data)) {
619 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
620 if (IS_IPA_REPLY(cmd)) {
621 if (cmd->hdr.command != IPA_CMD_SETCCID &&
622 cmd->hdr.command != IPA_CMD_DELCCID &&
623 cmd->hdr.command != IPA_CMD_MODCCID &&
624 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
625 qeth_issue_ipa_msg(cmd,
626 cmd->hdr.return_code, card);
629 switch (cmd->hdr.command) {
630 case IPA_CMD_STOPLAN:
631 if (cmd->hdr.return_code ==
632 IPA_RC_VEPA_TO_VEB_TRANSITION) {
633 dev_err(&card->gdev->dev,
634 "Interface %s is down because the "
635 "adjacent port is no longer in "
636 "reflective relay mode\n",
637 QETH_CARD_IFNAME(card));
638 qeth_close_dev(card);
640 dev_warn(&card->gdev->dev,
641 "The link for interface %s on CHPID"
643 QETH_CARD_IFNAME(card),
645 qeth_issue_ipa_msg(cmd,
646 cmd->hdr.return_code, card);
648 card->lan_online = 0;
649 if (card->dev && netif_carrier_ok(card->dev))
650 netif_carrier_off(card->dev);
652 case IPA_CMD_STARTLAN:
653 dev_info(&card->gdev->dev,
654 "The link for %s on CHPID 0x%X has"
656 QETH_CARD_IFNAME(card),
658 netif_carrier_on(card->dev);
659 card->lan_online = 1;
660 if (card->info.hwtrap)
661 card->info.hwtrap = 2;
662 qeth_schedule_recovery(card);
664 case IPA_CMD_SETBRIDGEPORT_IQD:
665 case IPA_CMD_SETBRIDGEPORT_OSA:
666 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
667 if (card->discipline->control_event_handler
672 case IPA_CMD_MODCCID:
674 case IPA_CMD_REGISTER_LOCAL_ADDR:
675 QETH_CARD_TEXT(card, 3, "irla");
677 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
678 QETH_CARD_TEXT(card, 3, "urla");
681 QETH_DBF_MESSAGE(2, "Received data is IPA "
682 "but not a reply!\n");
690 void qeth_clear_ipacmd_list(struct qeth_card *card)
692 struct qeth_reply *reply, *r;
695 QETH_CARD_TEXT(card, 4, "clipalst");
697 spin_lock_irqsave(&card->lock, flags);
698 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
699 qeth_get_reply(reply);
701 atomic_inc(&reply->received);
702 list_del_init(&reply->list);
703 wake_up(&reply->wait_q);
704 qeth_put_reply(reply);
706 spin_unlock_irqrestore(&card->lock, flags);
707 atomic_set(&card->write.irq_pending, 0);
709 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
711 static int qeth_check_idx_response(struct qeth_card *card,
712 unsigned char *buffer)
717 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
718 if ((buffer[2] & 0xc0) == 0xc0) {
719 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
720 "with cause code 0x%02x%s\n",
722 ((buffer[4] == 0x22) ?
723 " -- try another portname" : ""));
724 QETH_CARD_TEXT(card, 2, "ckidxres");
725 QETH_CARD_TEXT(card, 2, " idxterm");
726 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
727 if (buffer[4] == 0xf6) {
728 dev_err(&card->gdev->dev,
729 "The qeth device is not configured "
730 "for the OSI layer required by z/VM\n");
738 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
740 struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
741 dev_get_drvdata(&cdev->dev))->dev);
745 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
748 struct qeth_card *card;
750 card = CARD_FROM_CDEV(channel->ccwdev);
751 QETH_CARD_TEXT(card, 4, "setupccw");
752 if (channel == &card->read)
753 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
755 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
756 channel->ccw.count = len;
757 channel->ccw.cda = (__u32) __pa(iob);
760 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
764 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
765 index = channel->io_buf_no;
767 if (channel->iob[index].state == BUF_STATE_FREE) {
768 channel->iob[index].state = BUF_STATE_LOCKED;
769 channel->io_buf_no = (channel->io_buf_no + 1) %
771 memset(channel->iob[index].data, 0, QETH_BUFSIZE);
772 return channel->iob + index;
774 index = (index + 1) % QETH_CMD_BUFFER_NO;
775 } while (index != channel->io_buf_no);
780 void qeth_release_buffer(struct qeth_channel *channel,
781 struct qeth_cmd_buffer *iob)
785 QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
786 spin_lock_irqsave(&channel->iob_lock, flags);
787 memset(iob->data, 0, QETH_BUFSIZE);
788 iob->state = BUF_STATE_FREE;
789 iob->callback = qeth_send_control_data_cb;
791 spin_unlock_irqrestore(&channel->iob_lock, flags);
792 wake_up(&channel->wait_q);
794 EXPORT_SYMBOL_GPL(qeth_release_buffer);
796 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
798 struct qeth_cmd_buffer *buffer = NULL;
801 spin_lock_irqsave(&channel->iob_lock, flags);
802 buffer = __qeth_get_buffer(channel);
803 spin_unlock_irqrestore(&channel->iob_lock, flags);
807 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
809 struct qeth_cmd_buffer *buffer;
810 wait_event(channel->wait_q,
811 ((buffer = qeth_get_buffer(channel)) != NULL));
814 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
816 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
820 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
821 qeth_release_buffer(channel, &channel->iob[cnt]);
823 channel->io_buf_no = 0;
825 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
827 static void qeth_send_control_data_cb(struct qeth_channel *channel,
828 struct qeth_cmd_buffer *iob)
830 struct qeth_card *card;
831 struct qeth_reply *reply, *r;
832 struct qeth_ipa_cmd *cmd;
837 card = CARD_FROM_CDEV(channel->ccwdev);
838 QETH_CARD_TEXT(card, 4, "sndctlcb");
839 rc = qeth_check_idx_response(card, iob->data);
844 qeth_clear_ipacmd_list(card);
845 qeth_schedule_recovery(card);
851 cmd = qeth_check_ipa_data(card, iob);
852 if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
854 /*in case of OSN : check if cmd is set */
855 if (card->info.type == QETH_CARD_TYPE_OSN &&
857 cmd->hdr.command != IPA_CMD_STARTLAN &&
858 card->osn_info.assist_cb != NULL) {
859 card->osn_info.assist_cb(card->dev, cmd);
863 spin_lock_irqsave(&card->lock, flags);
864 list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
865 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
866 ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
867 qeth_get_reply(reply);
868 list_del_init(&reply->list);
869 spin_unlock_irqrestore(&card->lock, flags);
871 if (reply->callback != NULL) {
873 reply->offset = (__u16)((char *)cmd -
875 keep_reply = reply->callback(card,
879 keep_reply = reply->callback(card,
884 reply->rc = (u16) cmd->hdr.return_code;
888 spin_lock_irqsave(&card->lock, flags);
889 list_add_tail(&reply->list,
890 &card->cmd_waiter_list);
891 spin_unlock_irqrestore(&card->lock, flags);
893 atomic_inc(&reply->received);
894 wake_up(&reply->wait_q);
896 qeth_put_reply(reply);
900 spin_unlock_irqrestore(&card->lock, flags);
902 memcpy(&card->seqno.pdu_hdr_ack,
903 QETH_PDU_HEADER_SEQ_NO(iob->data),
905 qeth_release_buffer(channel, iob);
908 static int qeth_setup_channel(struct qeth_channel *channel)
912 QETH_DBF_TEXT(SETUP, 2, "setupch");
913 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
914 channel->iob[cnt].data =
915 kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
916 if (channel->iob[cnt].data == NULL)
918 channel->iob[cnt].state = BUF_STATE_FREE;
919 channel->iob[cnt].channel = channel;
920 channel->iob[cnt].callback = qeth_send_control_data_cb;
921 channel->iob[cnt].rc = 0;
923 if (cnt < QETH_CMD_BUFFER_NO) {
925 kfree(channel->iob[cnt].data);
929 channel->io_buf_no = 0;
930 atomic_set(&channel->irq_pending, 0);
931 spin_lock_init(&channel->iob_lock);
933 init_waitqueue_head(&channel->wait_q);
937 static int qeth_set_thread_start_bit(struct qeth_card *card,
938 unsigned long thread)
942 spin_lock_irqsave(&card->thread_mask_lock, flags);
943 if (!(card->thread_allowed_mask & thread) ||
944 (card->thread_start_mask & thread)) {
945 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
948 card->thread_start_mask |= thread;
949 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
953 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
957 spin_lock_irqsave(&card->thread_mask_lock, flags);
958 card->thread_start_mask &= ~thread;
959 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
960 wake_up(&card->wait_q);
962 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
964 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
968 spin_lock_irqsave(&card->thread_mask_lock, flags);
969 card->thread_running_mask &= ~thread;
970 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
971 wake_up_all(&card->wait_q);
973 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
975 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
980 spin_lock_irqsave(&card->thread_mask_lock, flags);
981 if (card->thread_start_mask & thread) {
982 if ((card->thread_allowed_mask & thread) &&
983 !(card->thread_running_mask & thread)) {
985 card->thread_start_mask &= ~thread;
986 card->thread_running_mask |= thread;
990 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
994 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
998 wait_event(card->wait_q,
999 (rc = __qeth_do_run_thread(card, thread)) >= 0);
1002 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
1004 void qeth_schedule_recovery(struct qeth_card *card)
1006 QETH_CARD_TEXT(card, 2, "startrec");
1007 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1008 schedule_work(&card->kernel_thread_starter);
1010 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1012 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1016 struct qeth_card *card;
1018 sense = (char *) irb->ecw;
1019 cstat = irb->scsw.cmd.cstat;
1020 dstat = irb->scsw.cmd.dstat;
1021 card = CARD_FROM_CDEV(cdev);
1023 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1024 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1025 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1026 QETH_CARD_TEXT(card, 2, "CGENCHK");
1027 dev_warn(&cdev->dev, "The qeth device driver "
1028 "failed to recover an error on the device\n");
1029 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1030 dev_name(&cdev->dev), dstat, cstat);
1031 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1036 if (dstat & DEV_STAT_UNIT_CHECK) {
1037 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1038 SENSE_RESETTING_EVENT_FLAG) {
1039 QETH_CARD_TEXT(card, 2, "REVIND");
1042 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1043 SENSE_COMMAND_REJECT_FLAG) {
1044 QETH_CARD_TEXT(card, 2, "CMDREJi");
1047 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1048 QETH_CARD_TEXT(card, 2, "AFFE");
1051 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1052 QETH_CARD_TEXT(card, 2, "ZEROSEN");
1055 QETH_CARD_TEXT(card, 2, "DGENCHK");
1061 static long __qeth_check_irb_error(struct ccw_device *cdev,
1062 unsigned long intparm, struct irb *irb)
1064 struct qeth_card *card;
1066 card = CARD_FROM_CDEV(cdev);
1068 if (!card || !IS_ERR(irb))
1071 switch (PTR_ERR(irb)) {
1073 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1074 dev_name(&cdev->dev));
1075 QETH_CARD_TEXT(card, 2, "ckirberr");
1076 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
1079 dev_warn(&cdev->dev, "A hardware operation timed out"
1080 " on the device\n");
1081 QETH_CARD_TEXT(card, 2, "ckirberr");
1082 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
1083 if (intparm == QETH_RCD_PARM) {
1084 if (card->data.ccwdev == cdev) {
1085 card->data.state = CH_STATE_DOWN;
1086 wake_up(&card->wait_q);
1091 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1092 dev_name(&cdev->dev), PTR_ERR(irb));
1093 QETH_CARD_TEXT(card, 2, "ckirberr");
1094 QETH_CARD_TEXT(card, 2, " rc???");
1096 return PTR_ERR(irb);
1099 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1104 struct qeth_cmd_buffer *buffer;
1105 struct qeth_channel *channel;
1106 struct qeth_card *card;
1107 struct qeth_cmd_buffer *iob;
1110 if (__qeth_check_irb_error(cdev, intparm, irb))
1112 cstat = irb->scsw.cmd.cstat;
1113 dstat = irb->scsw.cmd.dstat;
1115 card = CARD_FROM_CDEV(cdev);
1119 QETH_CARD_TEXT(card, 5, "irq");
1121 if (card->read.ccwdev == cdev) {
1122 channel = &card->read;
1123 QETH_CARD_TEXT(card, 5, "read");
1124 } else if (card->write.ccwdev == cdev) {
1125 channel = &card->write;
1126 QETH_CARD_TEXT(card, 5, "write");
1128 channel = &card->data;
1129 QETH_CARD_TEXT(card, 5, "data");
1131 atomic_set(&channel->irq_pending, 0);
1133 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1134 channel->state = CH_STATE_STOPPED;
1136 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1137 channel->state = CH_STATE_HALTED;
1139 /*let's wake up immediately on data channel*/
1140 if ((channel == &card->data) && (intparm != 0) &&
1141 (intparm != QETH_RCD_PARM))
1144 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1145 QETH_CARD_TEXT(card, 6, "clrchpar");
1146 /* we don't have to handle this further */
1149 if (intparm == QETH_HALT_CHANNEL_PARM) {
1150 QETH_CARD_TEXT(card, 6, "hltchpar");
1151 /* we don't have to handle this further */
1154 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1155 (dstat & DEV_STAT_UNIT_CHECK) ||
1157 if (irb->esw.esw0.erw.cons) {
1158 dev_warn(&channel->ccwdev->dev,
1159 "The qeth device driver failed to recover "
1160 "an error on the device\n");
1161 QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1162 "0x%X dstat 0x%X\n",
1163 dev_name(&channel->ccwdev->dev), cstat, dstat);
1164 print_hex_dump(KERN_WARNING, "qeth: irb ",
1165 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1166 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1167 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1169 if (intparm == QETH_RCD_PARM) {
1170 channel->state = CH_STATE_DOWN;
1173 rc = qeth_get_problem(cdev, irb);
1175 card->read_or_write_problem = 1;
1176 qeth_clear_ipacmd_list(card);
1177 qeth_schedule_recovery(card);
1182 if (intparm == QETH_RCD_PARM) {
1183 channel->state = CH_STATE_RCD_DONE;
1187 buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1188 buffer->state = BUF_STATE_PROCESSED;
1190 if (channel == &card->data)
1192 if (channel == &card->read &&
1193 channel->state == CH_STATE_UP)
1194 __qeth_issue_next_read(card);
1197 index = channel->buf_no;
1198 while (iob[index].state == BUF_STATE_PROCESSED) {
1199 if (iob[index].callback != NULL)
1200 iob[index].callback(channel, iob + index);
1202 index = (index + 1) % QETH_CMD_BUFFER_NO;
1204 channel->buf_no = index;
1206 wake_up(&card->wait_q);
1210 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1211 struct qeth_qdio_out_buffer *buf,
1212 enum iucv_tx_notify notification)
1214 struct sk_buff *skb;
1216 if (skb_queue_empty(&buf->skb_list))
1218 skb = skb_peek(&buf->skb_list);
1220 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1221 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1222 if (skb->protocol == ETH_P_AF_IUCV) {
1224 struct iucv_sock *iucv = iucv_sk(skb->sk);
1225 iucv->sk_txnotify(skb, notification);
1228 if (skb_queue_is_last(&buf->skb_list, skb))
1231 skb = skb_queue_next(&buf->skb_list, skb);
1237 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1239 struct sk_buff *skb;
1240 struct iucv_sock *iucv;
1241 int notify_general_error = 0;
1243 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1244 notify_general_error = 1;
1246 /* release may never happen from within CQ tasklet scope */
1247 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1249 skb = skb_dequeue(&buf->skb_list);
1251 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1252 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1253 if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
1255 iucv = iucv_sk(skb->sk);
1256 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1259 atomic_dec(&skb->users);
1260 dev_kfree_skb_any(skb);
1261 skb = skb_dequeue(&buf->skb_list);
1265 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1266 struct qeth_qdio_out_buffer *buf,
1267 enum qeth_qdio_buffer_states newbufstate)
1271 /* is PCI flag set on buffer? */
1272 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1273 atomic_dec(&queue->set_pci_flags_count);
1275 if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1276 qeth_release_skbs(buf);
1278 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1279 if (buf->buffer->element[i].addr && buf->is_header[i])
1280 kmem_cache_free(qeth_core_header_cache,
1281 buf->buffer->element[i].addr);
1282 buf->is_header[i] = 0;
1283 buf->buffer->element[i].length = 0;
1284 buf->buffer->element[i].addr = NULL;
1285 buf->buffer->element[i].eflags = 0;
1286 buf->buffer->element[i].sflags = 0;
1288 buf->buffer->element[15].eflags = 0;
1289 buf->buffer->element[15].sflags = 0;
1290 buf->next_element_to_fill = 0;
1291 atomic_set(&buf->state, newbufstate);
1294 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1298 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1301 qeth_cleanup_handled_pending(q, j, 1);
1302 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1304 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1310 void qeth_clear_qdio_buffers(struct qeth_card *card)
1314 QETH_CARD_TEXT(card, 2, "clearqdbf");
1315 /* clear outbound buffers to free skbs */
1316 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1317 if (card->qdio.out_qs[i]) {
1318 qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1322 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1324 static void qeth_free_buffer_pool(struct qeth_card *card)
1326 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1328 list_for_each_entry_safe(pool_entry, tmp,
1329 &card->qdio.init_pool.entry_list, init_list){
1330 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1331 free_page((unsigned long)pool_entry->elements[i]);
1332 list_del(&pool_entry->init_list);
1337 static void qeth_clean_channel(struct qeth_channel *channel)
1341 QETH_DBF_TEXT(SETUP, 2, "freech");
1342 for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1343 kfree(channel->iob[cnt].data);
1346 static void qeth_set_single_write_queues(struct qeth_card *card)
1348 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1349 (card->qdio.no_out_queues == 4))
1350 qeth_free_qdio_buffers(card);
1352 card->qdio.no_out_queues = 1;
1353 if (card->qdio.default_out_queue != 0)
1354 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1356 card->qdio.default_out_queue = 0;
1359 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1361 if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1362 (card->qdio.no_out_queues == 1)) {
1363 qeth_free_qdio_buffers(card);
1364 card->qdio.default_out_queue = 2;
1366 card->qdio.no_out_queues = 4;
1369 static void qeth_update_from_chp_desc(struct qeth_card *card)
1371 struct ccw_device *ccwdev;
1372 struct channel_path_desc *chp_dsc;
1374 QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1376 ccwdev = card->data.ccwdev;
1377 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1381 card->info.func_level = 0x4100 + chp_dsc->desc;
1382 if (card->info.type == QETH_CARD_TYPE_IQD)
1385 /* CHPP field bit 6 == 1 -> single queue */
1386 if ((chp_dsc->chpp & 0x02) == 0x02)
1387 qeth_set_single_write_queues(card);
1389 qeth_set_multiple_write_queues(card);
1392 QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1393 QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1396 static void qeth_init_qdio_info(struct qeth_card *card)
1398 QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1399 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1401 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1402 if (card->info.type == QETH_CARD_TYPE_IQD)
1403 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1405 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1406 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1407 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1408 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1411 static void qeth_set_intial_options(struct qeth_card *card)
1413 card->options.route4.type = NO_ROUTER;
1414 card->options.route6.type = NO_ROUTER;
1415 card->options.fake_broadcast = 0;
1416 card->options.add_hhlen = DEFAULT_ADD_HHLEN;
1417 card->options.performance_stats = 0;
1418 card->options.rx_sg_cb = QETH_RX_SG_CB;
1419 card->options.isolation = ISOLATION_MODE_NONE;
1420 card->options.cq = QETH_CQ_DISABLED;
1423 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1425 unsigned long flags;
1428 spin_lock_irqsave(&card->thread_mask_lock, flags);
1429 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1430 (u8) card->thread_start_mask,
1431 (u8) card->thread_allowed_mask,
1432 (u8) card->thread_running_mask);
1433 rc = (card->thread_start_mask & thread);
1434 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1438 static void qeth_start_kernel_thread(struct work_struct *work)
1440 struct task_struct *ts;
1441 struct qeth_card *card = container_of(work, struct qeth_card,
1442 kernel_thread_starter);
1443 QETH_CARD_TEXT(card , 2, "strthrd");
1445 if (card->read.state != CH_STATE_UP &&
1446 card->write.state != CH_STATE_UP)
1448 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1449 ts = kthread_run(card->discipline->recover, (void *)card,
1452 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1453 qeth_clear_thread_running_bit(card,
1454 QETH_RECOVER_THREAD);
1459 static void qeth_buffer_reclaim_work(struct work_struct *);
1460 static int qeth_setup_card(struct qeth_card *card)
1463 QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1464 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1466 card->read.state = CH_STATE_DOWN;
1467 card->write.state = CH_STATE_DOWN;
1468 card->data.state = CH_STATE_DOWN;
1469 card->state = CARD_STATE_DOWN;
1470 card->lan_online = 0;
1471 card->read_or_write_problem = 0;
1473 spin_lock_init(&card->vlanlock);
1474 spin_lock_init(&card->mclock);
1475 spin_lock_init(&card->lock);
1476 spin_lock_init(&card->ip_lock);
1477 spin_lock_init(&card->thread_mask_lock);
1478 mutex_init(&card->conf_mutex);
1479 mutex_init(&card->discipline_mutex);
1480 card->thread_start_mask = 0;
1481 card->thread_allowed_mask = 0;
1482 card->thread_running_mask = 0;
1483 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1484 INIT_LIST_HEAD(&card->cmd_waiter_list);
1485 init_waitqueue_head(&card->wait_q);
1486 /* initial options */
1487 qeth_set_intial_options(card);
1488 /* IP address takeover */
1489 INIT_LIST_HEAD(&card->ipato.entries);
1490 card->ipato.enabled = false;
1491 card->ipato.invert4 = false;
1492 card->ipato.invert6 = false;
1493 /* init QDIO stuff */
1494 qeth_init_qdio_info(card);
1495 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1496 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1500 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1502 struct qeth_card *card = container_of(slr, struct qeth_card,
1503 qeth_service_level);
1504 if (card->info.mcl_level[0])
1505 seq_printf(m, "qeth: %s firmware level %s\n",
1506 CARD_BUS_ID(card), card->info.mcl_level);
1509 static struct qeth_card *qeth_alloc_card(void)
1511 struct qeth_card *card;
1513 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1514 card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1517 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1518 if (qeth_setup_channel(&card->read))
1520 if (qeth_setup_channel(&card->write))
1522 card->options.layer2 = -1;
1523 card->qeth_service_level.seq_print = qeth_core_sl_print;
1524 register_service_level(&card->qeth_service_level);
1528 qeth_clean_channel(&card->read);
1535 static int qeth_determine_card_type(struct qeth_card *card)
1539 QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1541 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1542 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1543 while (known_devices[i][QETH_DEV_MODEL_IND]) {
1544 if ((CARD_RDEV(card)->id.dev_type ==
1545 known_devices[i][QETH_DEV_TYPE_IND]) &&
1546 (CARD_RDEV(card)->id.dev_model ==
1547 known_devices[i][QETH_DEV_MODEL_IND])) {
1548 card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
1549 card->qdio.no_out_queues =
1550 known_devices[i][QETH_QUEUE_NO_IND];
1551 card->qdio.no_in_queues = 1;
1552 card->info.is_multicast_different =
1553 known_devices[i][QETH_MULTICAST_IND];
1554 qeth_update_from_chp_desc(card);
1559 card->info.type = QETH_CARD_TYPE_UNKNOWN;
1560 dev_err(&card->gdev->dev, "The adapter hardware is of an "
1565 static int qeth_clear_channel(struct qeth_channel *channel)
1567 unsigned long flags;
1568 struct qeth_card *card;
1571 card = CARD_FROM_CDEV(channel->ccwdev);
1572 QETH_CARD_TEXT(card, 3, "clearch");
1573 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1574 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1575 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1579 rc = wait_event_interruptible_timeout(card->wait_q,
1580 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1581 if (rc == -ERESTARTSYS)
1583 if (channel->state != CH_STATE_STOPPED)
1585 channel->state = CH_STATE_DOWN;
1589 static int qeth_halt_channel(struct qeth_channel *channel)
1591 unsigned long flags;
1592 struct qeth_card *card;
1595 card = CARD_FROM_CDEV(channel->ccwdev);
1596 QETH_CARD_TEXT(card, 3, "haltch");
1597 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1598 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1599 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1603 rc = wait_event_interruptible_timeout(card->wait_q,
1604 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1605 if (rc == -ERESTARTSYS)
1607 if (channel->state != CH_STATE_HALTED)
1612 static int qeth_halt_channels(struct qeth_card *card)
1614 int rc1 = 0, rc2 = 0, rc3 = 0;
1616 QETH_CARD_TEXT(card, 3, "haltchs");
1617 rc1 = qeth_halt_channel(&card->read);
1618 rc2 = qeth_halt_channel(&card->write);
1619 rc3 = qeth_halt_channel(&card->data);
1627 static int qeth_clear_channels(struct qeth_card *card)
1629 int rc1 = 0, rc2 = 0, rc3 = 0;
1631 QETH_CARD_TEXT(card, 3, "clearchs");
1632 rc1 = qeth_clear_channel(&card->read);
1633 rc2 = qeth_clear_channel(&card->write);
1634 rc3 = qeth_clear_channel(&card->data);
1642 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1646 QETH_CARD_TEXT(card, 3, "clhacrd");
1649 rc = qeth_halt_channels(card);
1652 return qeth_clear_channels(card);
1655 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1659 QETH_CARD_TEXT(card, 3, "qdioclr");
1660 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1661 QETH_QDIO_CLEANING)) {
1662 case QETH_QDIO_ESTABLISHED:
1663 if (card->info.type == QETH_CARD_TYPE_IQD)
1664 rc = qdio_shutdown(CARD_DDEV(card),
1665 QDIO_FLAG_CLEANUP_USING_HALT);
1667 rc = qdio_shutdown(CARD_DDEV(card),
1668 QDIO_FLAG_CLEANUP_USING_CLEAR);
1670 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1671 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1673 case QETH_QDIO_CLEANING:
1678 rc = qeth_clear_halt_card(card, use_halt);
1680 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1681 card->state = CARD_STATE_DOWN;
1684 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1686 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1692 struct qeth_channel *channel = &card->data;
1693 unsigned long flags;
1696 * scan for RCD command in extended SenseID data
1698 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1699 if (!ciw || ciw->cmd == 0)
1701 rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1705 channel->ccw.cmd_code = ciw->cmd;
1706 channel->ccw.cda = (__u32) __pa(rcd_buf);
1707 channel->ccw.count = ciw->count;
1708 channel->ccw.flags = CCW_FLAG_SLI;
1709 channel->state = CH_STATE_RCD;
1710 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1711 ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1712 QETH_RCD_PARM, LPM_ANYPATH, 0,
1714 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1716 wait_event(card->wait_q,
1717 (channel->state == CH_STATE_RCD_DONE ||
1718 channel->state == CH_STATE_DOWN));
1719 if (channel->state == CH_STATE_DOWN)
1722 channel->state = CH_STATE_DOWN;
1728 *length = ciw->count;
1734 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1736 QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1737 card->info.chpid = prcd[30];
1738 card->info.unit_addr2 = prcd[31];
1739 card->info.cula = prcd[63];
1740 card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1741 (prcd[0x11] == _ascebc['M']));
1744 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1746 QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1748 if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1749 prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1750 card->info.blkt.time_total = 0;
1751 card->info.blkt.inter_packet = 0;
1752 card->info.blkt.inter_packet_jumbo = 0;
1754 card->info.blkt.time_total = 250;
1755 card->info.blkt.inter_packet = 5;
1756 card->info.blkt.inter_packet_jumbo = 15;
1760 static void qeth_init_tokens(struct qeth_card *card)
1762 card->token.issuer_rm_w = 0x00010103UL;
1763 card->token.cm_filter_w = 0x00010108UL;
1764 card->token.cm_connection_w = 0x0001010aUL;
1765 card->token.ulp_filter_w = 0x0001010bUL;
1766 card->token.ulp_connection_w = 0x0001010dUL;
1769 static void qeth_init_func_level(struct qeth_card *card)
1771 switch (card->info.type) {
1772 case QETH_CARD_TYPE_IQD:
1773 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1775 case QETH_CARD_TYPE_OSD:
1776 case QETH_CARD_TYPE_OSN:
1777 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1784 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1785 void (*idx_reply_cb)(struct qeth_channel *,
1786 struct qeth_cmd_buffer *))
1788 struct qeth_cmd_buffer *iob;
1789 unsigned long flags;
1791 struct qeth_card *card;
1793 QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1794 card = CARD_FROM_CDEV(channel->ccwdev);
1795 iob = qeth_get_buffer(channel);
1798 iob->callback = idx_reply_cb;
1799 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1800 channel->ccw.count = QETH_BUFSIZE;
1801 channel->ccw.cda = (__u32) __pa(iob->data);
1803 wait_event(card->wait_q,
1804 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1805 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1806 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1807 rc = ccw_device_start(channel->ccwdev,
1808 &channel->ccw, (addr_t) iob, 0, 0);
1809 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1812 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1813 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1814 atomic_set(&channel->irq_pending, 0);
1815 wake_up(&card->wait_q);
1818 rc = wait_event_interruptible_timeout(card->wait_q,
1819 channel->state == CH_STATE_UP, QETH_TIMEOUT);
1820 if (rc == -ERESTARTSYS)
1822 if (channel->state != CH_STATE_UP) {
1824 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1825 qeth_clear_cmd_buffers(channel);
1831 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1832 void (*idx_reply_cb)(struct qeth_channel *,
1833 struct qeth_cmd_buffer *))
1835 struct qeth_card *card;
1836 struct qeth_cmd_buffer *iob;
1837 unsigned long flags;
1841 struct ccw_dev_id temp_devid;
1843 card = CARD_FROM_CDEV(channel->ccwdev);
1845 QETH_DBF_TEXT(SETUP, 2, "idxactch");
1847 iob = qeth_get_buffer(channel);
1850 iob->callback = idx_reply_cb;
1851 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1852 channel->ccw.count = IDX_ACTIVATE_SIZE;
1853 channel->ccw.cda = (__u32) __pa(iob->data);
1854 if (channel == &card->write) {
1855 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1856 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1857 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1858 card->seqno.trans_hdr++;
1860 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1861 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1862 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1864 tmp = ((__u8)card->info.portno) | 0x80;
1865 memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1866 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1867 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1868 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1869 &card->info.func_level, sizeof(__u16));
1870 ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1871 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1872 temp = (card->info.cula << 8) + card->info.unit_addr2;
1873 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1875 wait_event(card->wait_q,
1876 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1877 QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1878 spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1879 rc = ccw_device_start(channel->ccwdev,
1880 &channel->ccw, (addr_t) iob, 0, 0);
1881 spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1884 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1886 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1887 atomic_set(&channel->irq_pending, 0);
1888 wake_up(&card->wait_q);
1891 rc = wait_event_interruptible_timeout(card->wait_q,
1892 channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1893 if (rc == -ERESTARTSYS)
1895 if (channel->state != CH_STATE_ACTIVATING) {
1896 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1897 " failed to recover an error on the device\n");
1898 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1899 dev_name(&channel->ccwdev->dev));
1900 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1901 qeth_clear_cmd_buffers(channel);
1904 return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1907 static int qeth_peer_func_level(int level)
1909 if ((level & 0xff) == 8)
1910 return (level & 0xff) + 0x400;
1911 if (((level >> 8) & 3) == 1)
1912 return (level & 0xff) + 0x200;
1916 static void qeth_idx_write_cb(struct qeth_channel *channel,
1917 struct qeth_cmd_buffer *iob)
1919 struct qeth_card *card;
1922 QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1924 if (channel->state == CH_STATE_DOWN) {
1925 channel->state = CH_STATE_ACTIVATING;
1928 card = CARD_FROM_CDEV(channel->ccwdev);
1930 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1931 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1932 dev_err(&card->write.ccwdev->dev,
1933 "The adapter is used exclusively by another "
1936 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1937 " negative reply\n",
1938 dev_name(&card->write.ccwdev->dev));
1941 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1942 if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1943 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1944 "function level mismatch (sent: 0x%x, received: "
1945 "0x%x)\n", dev_name(&card->write.ccwdev->dev),
1946 card->info.func_level, temp);
1949 channel->state = CH_STATE_UP;
1951 qeth_release_buffer(channel, iob);
1954 static void qeth_idx_read_cb(struct qeth_channel *channel,
1955 struct qeth_cmd_buffer *iob)
1957 struct qeth_card *card;
1960 QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
1961 if (channel->state == CH_STATE_DOWN) {
1962 channel->state = CH_STATE_ACTIVATING;
1966 card = CARD_FROM_CDEV(channel->ccwdev);
1967 if (qeth_check_idx_response(card, iob->data))
1970 if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1971 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1972 case QETH_IDX_ACT_ERR_EXCL:
1973 dev_err(&card->write.ccwdev->dev,
1974 "The adapter is used exclusively by another "
1977 case QETH_IDX_ACT_ERR_AUTH:
1978 case QETH_IDX_ACT_ERR_AUTH_USER:
1979 dev_err(&card->read.ccwdev->dev,
1980 "Setting the device online failed because of "
1981 "insufficient authorization\n");
1984 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
1985 " negative reply\n",
1986 dev_name(&card->read.ccwdev->dev));
1988 QETH_CARD_TEXT_(card, 2, "idxread%c",
1989 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1993 memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1994 if (temp != qeth_peer_func_level(card->info.func_level)) {
1995 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
1996 "level mismatch (sent: 0x%x, received: 0x%x)\n",
1997 dev_name(&card->read.ccwdev->dev),
1998 card->info.func_level, temp);
2001 memcpy(&card->token.issuer_rm_r,
2002 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2003 QETH_MPC_TOKEN_LENGTH);
2004 memcpy(&card->info.mcl_level[0],
2005 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2006 channel->state = CH_STATE_UP;
2008 qeth_release_buffer(channel, iob);
2011 void qeth_prepare_control_data(struct qeth_card *card, int len,
2012 struct qeth_cmd_buffer *iob)
2014 qeth_setup_ccw(&card->write, iob->data, len);
2015 iob->callback = qeth_release_buffer;
2017 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2018 &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2019 card->seqno.trans_hdr++;
2020 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2021 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2022 card->seqno.pdu_hdr++;
2023 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2024 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2025 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2027 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2030 * qeth_send_control_data() - send control command to the card
2031 * @card: qeth_card structure pointer
2032 * @len: size of the command buffer
2033 * @iob: qeth_cmd_buffer pointer
2034 * @reply_cb: callback function pointer
2035 * @cb_card: pointer to the qeth_card structure
2036 * @cb_reply: pointer to the qeth_reply structure
2037 * @cb_cmd: pointer to the original iob for non-IPA
2038 * commands, or to the qeth_ipa_cmd structure
2039 * for the IPA commands.
2040 * @reply_param: private pointer passed to the callback
2042 * Returns the value of the `return_code' field of the response
2043 * block returned from the hardware, or other error indication.
2044 * Value of zero indicates successful execution of the command.
2046 * Callback function gets called one or more times, with cb_cmd
2047 * pointing to the response returned by the hardware. Callback
2048 * function must return non-zero if more reply blocks are expected,
2049 * and zero if the last or only reply block is received. Callback
2050 * function can get the value of the reply_param pointer from the
2051 * field 'param' of the structure qeth_reply.
2054 int qeth_send_control_data(struct qeth_card *card, int len,
2055 struct qeth_cmd_buffer *iob,
2056 int (*reply_cb)(struct qeth_card *cb_card,
2057 struct qeth_reply *cb_reply,
2058 unsigned long cb_cmd),
2062 unsigned long flags;
2063 struct qeth_reply *reply = NULL;
2064 unsigned long timeout, event_timeout;
2065 struct qeth_ipa_cmd *cmd = NULL;
2067 QETH_CARD_TEXT(card, 2, "sendctl");
2069 if (card->read_or_write_problem) {
2070 qeth_release_buffer(iob->channel, iob);
2073 reply = qeth_alloc_reply(card);
2077 reply->callback = reply_cb;
2078 reply->param = reply_param;
2080 init_waitqueue_head(&reply->wait_q);
2081 QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2083 while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2085 if (IS_IPA(iob->data)) {
2086 cmd = __ipa_cmd(iob);
2087 cmd->hdr.seqno = card->seqno.ipa++;
2088 reply->seqno = cmd->hdr.seqno;
2089 event_timeout = QETH_IPA_TIMEOUT;
2091 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2092 event_timeout = QETH_TIMEOUT;
2094 qeth_prepare_control_data(card, len, iob);
2096 spin_lock_irqsave(&card->lock, flags);
2097 list_add_tail(&reply->list, &card->cmd_waiter_list);
2098 spin_unlock_irqrestore(&card->lock, flags);
2100 timeout = jiffies + event_timeout;
2102 QETH_CARD_TEXT(card, 6, "noirqpnd");
2103 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2104 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2105 (addr_t) iob, 0, 0);
2106 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2108 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2109 "ccw_device_start rc = %i\n",
2110 dev_name(&card->write.ccwdev->dev), rc);
2111 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2112 spin_lock_irqsave(&card->lock, flags);
2113 list_del_init(&reply->list);
2114 qeth_put_reply(reply);
2115 spin_unlock_irqrestore(&card->lock, flags);
2116 qeth_release_buffer(iob->channel, iob);
2117 atomic_set(&card->write.irq_pending, 0);
2118 wake_up(&card->wait_q);
2122 /* we have only one long running ipassist, since we can ensure
2123 process context of this command we can sleep */
2124 if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2125 cmd->hdr.prot_version == QETH_PROT_IPV4) {
2126 if (!wait_event_timeout(reply->wait_q,
2127 atomic_read(&reply->received), event_timeout))
2130 while (!atomic_read(&reply->received)) {
2131 if (time_after(jiffies, timeout))
2137 if (reply->rc == -EIO)
2140 qeth_put_reply(reply);
2145 spin_lock_irqsave(&reply->card->lock, flags);
2146 list_del_init(&reply->list);
2147 spin_unlock_irqrestore(&reply->card->lock, flags);
2148 atomic_inc(&reply->received);
2150 atomic_set(&card->write.irq_pending, 0);
2151 qeth_release_buffer(iob->channel, iob);
2152 card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
2154 qeth_put_reply(reply);
2157 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2159 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2162 struct qeth_cmd_buffer *iob;
2164 QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2166 iob = (struct qeth_cmd_buffer *) data;
2167 memcpy(&card->token.cm_filter_r,
2168 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2169 QETH_MPC_TOKEN_LENGTH);
2170 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2174 static int qeth_cm_enable(struct qeth_card *card)
2177 struct qeth_cmd_buffer *iob;
2179 QETH_DBF_TEXT(SETUP, 2, "cmenable");
2181 iob = qeth_wait_for_buffer(&card->write);
2182 memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2183 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2184 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2185 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2186 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2188 rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2189 qeth_cm_enable_cb, NULL);
2193 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2197 struct qeth_cmd_buffer *iob;
2199 QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2201 iob = (struct qeth_cmd_buffer *) data;
2202 memcpy(&card->token.cm_connection_r,
2203 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2204 QETH_MPC_TOKEN_LENGTH);
2205 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2209 static int qeth_cm_setup(struct qeth_card *card)
2212 struct qeth_cmd_buffer *iob;
2214 QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2216 iob = qeth_wait_for_buffer(&card->write);
2217 memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2218 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2219 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2220 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2221 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2222 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2223 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2224 rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2225 qeth_cm_setup_cb, NULL);
2230 static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2232 switch (card->info.type) {
2233 case QETH_CARD_TYPE_UNKNOWN:
2235 case QETH_CARD_TYPE_IQD:
2236 return card->info.max_mtu;
2237 case QETH_CARD_TYPE_OSD:
2238 switch (card->info.link_type) {
2239 case QETH_LINK_TYPE_HSTR:
2240 case QETH_LINK_TYPE_LANE_TR:
2243 return card->options.layer2 ? 1500 : 1492;
2245 case QETH_CARD_TYPE_OSM:
2246 case QETH_CARD_TYPE_OSX:
2247 return card->options.layer2 ? 1500 : 1492;
2253 static inline int qeth_get_mtu_outof_framesize(int framesize)
2255 switch (framesize) {
2269 static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2271 switch (card->info.type) {
2272 case QETH_CARD_TYPE_OSD:
2273 case QETH_CARD_TYPE_OSM:
2274 case QETH_CARD_TYPE_OSX:
2275 case QETH_CARD_TYPE_IQD:
2276 return ((mtu >= 576) &&
2277 (mtu <= card->info.max_mtu));
2278 case QETH_CARD_TYPE_OSN:
2279 case QETH_CARD_TYPE_UNKNOWN:
2285 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2289 __u16 mtu, framesize;
2292 struct qeth_cmd_buffer *iob;
2294 QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2296 iob = (struct qeth_cmd_buffer *) data;
2297 memcpy(&card->token.ulp_filter_r,
2298 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2299 QETH_MPC_TOKEN_LENGTH);
2300 if (card->info.type == QETH_CARD_TYPE_IQD) {
2301 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2302 mtu = qeth_get_mtu_outof_framesize(framesize);
2305 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2308 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2309 /* frame size has changed */
2311 ((card->dev->mtu == card->info.initial_mtu) ||
2312 (card->dev->mtu > mtu)))
2313 card->dev->mtu = mtu;
2314 qeth_free_qdio_buffers(card);
2316 card->info.initial_mtu = mtu;
2317 card->info.max_mtu = mtu;
2318 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2320 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2322 card->info.initial_mtu = min(card->info.max_mtu,
2323 qeth_get_initial_mtu_for_card(card));
2324 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2327 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2328 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2330 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2331 card->info.link_type = link_type;
2333 card->info.link_type = 0;
2334 QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2335 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2339 static int qeth_ulp_enable(struct qeth_card *card)
2343 struct qeth_cmd_buffer *iob;
2345 /*FIXME: trace view callbacks*/
2346 QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2348 iob = qeth_wait_for_buffer(&card->write);
2349 memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2351 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2352 (__u8) card->info.portno;
2353 if (card->options.layer2)
2354 if (card->info.type == QETH_CARD_TYPE_OSN)
2355 prot_type = QETH_PROT_OSN2;
2357 prot_type = QETH_PROT_LAYER2;
2359 prot_type = QETH_PROT_TCPIP;
2361 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2362 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2363 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2364 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2365 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2366 rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2367 qeth_ulp_enable_cb, NULL);
2372 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2375 struct qeth_cmd_buffer *iob;
2377 QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2379 iob = (struct qeth_cmd_buffer *) data;
2380 memcpy(&card->token.ulp_connection_r,
2381 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2382 QETH_MPC_TOKEN_LENGTH);
2383 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2385 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2386 dev_err(&card->gdev->dev, "A connection could not be "
2387 "established because of an OLM limit\n");
2390 QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
2394 static int qeth_ulp_setup(struct qeth_card *card)
2398 struct qeth_cmd_buffer *iob;
2399 struct ccw_dev_id dev_id;
2401 QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2403 iob = qeth_wait_for_buffer(&card->write);
2404 memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2406 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2407 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2408 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2409 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2410 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2411 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2413 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2414 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2415 temp = (card->info.cula << 8) + card->info.unit_addr2;
2416 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2417 rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2418 qeth_ulp_setup_cb, NULL);
2422 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2425 struct qeth_qdio_out_buffer *newbuf;
2428 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2433 newbuf->buffer = q->qdio_bufs[bidx];
2434 skb_queue_head_init(&newbuf->skb_list);
2435 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2438 newbuf->next_pending = q->bufs[bidx];
2439 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2440 q->bufs[bidx] = newbuf;
2442 q->bufstates[bidx].user = newbuf;
2443 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2444 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2445 QETH_CARD_TEXT_(q->card, 2, "%lx",
2446 (long) newbuf->next_pending);
2452 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2457 qeth_clear_outq_buffers(q, 1);
2458 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2462 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2464 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2469 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2476 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2480 QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2482 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2483 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2486 QETH_DBF_TEXT(SETUP, 2, "inq");
2487 card->qdio.in_q = qeth_alloc_qdio_queue();
2488 if (!card->qdio.in_q)
2491 /* inbound buffer pool */
2492 if (qeth_alloc_buffer_pool(card))
2497 kzalloc(card->qdio.no_out_queues *
2498 sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2499 if (!card->qdio.out_qs)
2501 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2502 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2503 if (!card->qdio.out_qs[i])
2505 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2506 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2507 card->qdio.out_qs[i]->queue_no = i;
2508 /* give outbound qeth_qdio_buffers their qdio_buffers */
2509 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2510 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2511 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2512 goto out_freeoutqbufs;
2517 if (qeth_alloc_cq(card))
2525 kmem_cache_free(qeth_qdio_outbuf_cache,
2526 card->qdio.out_qs[i]->bufs[j]);
2527 card->qdio.out_qs[i]->bufs[j] = NULL;
2531 qeth_free_output_queue(card->qdio.out_qs[--i]);
2532 kfree(card->qdio.out_qs);
2533 card->qdio.out_qs = NULL;
2535 qeth_free_buffer_pool(card);
2537 qeth_free_qdio_queue(card->qdio.in_q);
2538 card->qdio.in_q = NULL;
2540 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2544 static void qeth_free_qdio_buffers(struct qeth_card *card)
2548 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2549 QETH_QDIO_UNINITIALIZED)
2553 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2554 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2555 if (card->qdio.in_q->bufs[j].rx_skb)
2556 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2558 qeth_free_qdio_queue(card->qdio.in_q);
2559 card->qdio.in_q = NULL;
2560 /* inbound buffer pool */
2561 qeth_free_buffer_pool(card);
2562 /* free outbound qdio_qs */
2563 if (card->qdio.out_qs) {
2564 for (i = 0; i < card->qdio.no_out_queues; i++)
2565 qeth_free_output_queue(card->qdio.out_qs[i]);
2566 kfree(card->qdio.out_qs);
2567 card->qdio.out_qs = NULL;
2571 static void qeth_create_qib_param_field(struct qeth_card *card,
2575 param_field[0] = _ascebc['P'];
2576 param_field[1] = _ascebc['C'];
2577 param_field[2] = _ascebc['I'];
2578 param_field[3] = _ascebc['T'];
2579 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2580 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2581 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2584 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2587 param_field[16] = _ascebc['B'];
2588 param_field[17] = _ascebc['L'];
2589 param_field[18] = _ascebc['K'];
2590 param_field[19] = _ascebc['T'];
2591 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2592 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2593 *((unsigned int *) (¶m_field[28])) =
2594 card->info.blkt.inter_packet_jumbo;
2597 static int qeth_qdio_activate(struct qeth_card *card)
2599 QETH_DBF_TEXT(SETUP, 3, "qdioact");
2600 return qdio_activate(CARD_DDEV(card));
2603 static int qeth_dm_act(struct qeth_card *card)
2606 struct qeth_cmd_buffer *iob;
2608 QETH_DBF_TEXT(SETUP, 2, "dmact");
2610 iob = qeth_wait_for_buffer(&card->write);
2611 memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2613 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2614 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2615 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2616 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2617 rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2621 static int qeth_mpc_initialize(struct qeth_card *card)
2625 QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2627 rc = qeth_issue_next_read(card);
2629 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2632 rc = qeth_cm_enable(card);
2634 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2637 rc = qeth_cm_setup(card);
2639 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2642 rc = qeth_ulp_enable(card);
2644 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2647 rc = qeth_ulp_setup(card);
2649 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2652 rc = qeth_alloc_qdio_buffers(card);
2654 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2657 rc = qeth_qdio_establish(card);
2659 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2660 qeth_free_qdio_buffers(card);
2663 rc = qeth_qdio_activate(card);
2665 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2668 rc = qeth_dm_act(card);
2670 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2676 qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2677 qdio_free(CARD_DDEV(card));
2681 void qeth_print_status_message(struct qeth_card *card)
2683 switch (card->info.type) {
2684 case QETH_CARD_TYPE_OSD:
2685 case QETH_CARD_TYPE_OSM:
2686 case QETH_CARD_TYPE_OSX:
2687 /* VM will use a non-zero first character
2688 * to indicate a HiperSockets like reporting
2689 * of the level OSA sets the first character to zero
2691 if (!card->info.mcl_level[0]) {
2692 sprintf(card->info.mcl_level, "%02x%02x",
2693 card->info.mcl_level[2],
2694 card->info.mcl_level[3]);
2698 case QETH_CARD_TYPE_IQD:
2699 if ((card->info.guestlan) ||
2700 (card->info.mcl_level[0] & 0x80)) {
2701 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2702 card->info.mcl_level[0]];
2703 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2704 card->info.mcl_level[1]];
2705 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2706 card->info.mcl_level[2]];
2707 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2708 card->info.mcl_level[3]];
2709 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2713 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2715 dev_info(&card->gdev->dev,
2716 "Device is a%s card%s%s%s\nwith link type %s.\n",
2717 qeth_get_cardname(card),
2718 (card->info.mcl_level[0]) ? " (level: " : "",
2719 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2720 (card->info.mcl_level[0]) ? ")" : "",
2721 qeth_get_cardname_short(card));
2723 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2725 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2727 struct qeth_buffer_pool_entry *entry;
2729 QETH_CARD_TEXT(card, 5, "inwrklst");
2731 list_for_each_entry(entry,
2732 &card->qdio.init_pool.entry_list, init_list) {
2733 qeth_put_buffer_pool_entry(card, entry);
2737 static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2738 struct qeth_card *card)
2740 struct list_head *plh;
2741 struct qeth_buffer_pool_entry *entry;
2745 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2748 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2749 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2751 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2752 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2758 list_del_init(&entry->list);
2763 /* no free buffer in pool so take first one and swap pages */
2764 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2765 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) {
2768 page = alloc_page(GFP_ATOMIC);
2772 free_page((unsigned long)entry->elements[i]);
2773 entry->elements[i] = page_address(page);
2774 if (card->options.performance_stats)
2775 card->perf_stats.sg_alloc_page_rx++;
2779 list_del_init(&entry->list);
2783 static int qeth_init_input_buffer(struct qeth_card *card,
2784 struct qeth_qdio_buffer *buf)
2786 struct qeth_buffer_pool_entry *pool_entry;
2789 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2790 buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
2795 pool_entry = qeth_find_free_buffer_pool_entry(card);
2800 * since the buffer is accessed only from the input_tasklet
2801 * there shouldn't be a need to synchronize; also, since we use
2802 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2806 buf->pool_entry = pool_entry;
2807 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2808 buf->buffer->element[i].length = PAGE_SIZE;
2809 buf->buffer->element[i].addr = pool_entry->elements[i];
2810 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2811 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2813 buf->buffer->element[i].eflags = 0;
2814 buf->buffer->element[i].sflags = 0;
2819 int qeth_init_qdio_queues(struct qeth_card *card)
2824 QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2827 qdio_reset_buffers(card->qdio.in_q->qdio_bufs,
2828 QDIO_MAX_BUFFERS_PER_Q);
2829 qeth_initialize_working_pool_list(card);
2830 /*give only as many buffers to hardware as we have buffer pool entries*/
2831 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2832 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2833 card->qdio.in_q->next_buf_to_init =
2834 card->qdio.in_buf_pool.buf_count - 1;
2835 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2836 card->qdio.in_buf_pool.buf_count - 1);
2838 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2843 rc = qeth_cq_init(card);
2848 /* outbound queue */
2849 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2850 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2851 QDIO_MAX_BUFFERS_PER_Q);
2852 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2853 qeth_clear_output_buffer(card->qdio.out_qs[i],
2854 card->qdio.out_qs[i]->bufs[j],
2855 QETH_QDIO_BUF_EMPTY);
2857 card->qdio.out_qs[i]->card = card;
2858 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2859 card->qdio.out_qs[i]->do_pack = 0;
2860 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2861 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2862 atomic_set(&card->qdio.out_qs[i]->state,
2863 QETH_OUT_Q_UNLOCKED);
2867 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2869 static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2871 switch (link_type) {
2872 case QETH_LINK_TYPE_HSTR:
2879 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2880 struct qeth_ipa_cmd *cmd, __u8 command,
2881 enum qeth_prot_versions prot)
2883 memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2884 cmd->hdr.command = command;
2885 cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2886 /* cmd->hdr.seqno is set by qeth_send_control_data() */
2887 cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2888 cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2889 if (card->options.layer2)
2890 cmd->hdr.prim_version_no = 2;
2892 cmd->hdr.prim_version_no = 1;
2893 cmd->hdr.param_count = 1;
2894 cmd->hdr.prot_version = prot;
2895 cmd->hdr.ipa_supported = 0;
2896 cmd->hdr.ipa_enabled = 0;
2899 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2900 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2902 struct qeth_cmd_buffer *iob;
2903 struct qeth_ipa_cmd *cmd;
2905 iob = qeth_get_buffer(&card->write);
2907 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2908 qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
2910 dev_warn(&card->gdev->dev,
2911 "The qeth driver ran out of channel command buffers\n");
2912 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2913 dev_name(&card->gdev->dev));
2918 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2920 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2923 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2924 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2925 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2926 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2928 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2931 * qeth_send_ipa_cmd() - send an IPA command
2933 * See qeth_send_control_data() for explanation of the arguments.
2936 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2937 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2944 QETH_CARD_TEXT(card, 4, "sendipa");
2946 if (card->options.layer2)
2947 if (card->info.type == QETH_CARD_TYPE_OSN)
2948 prot_type = QETH_PROT_OSN2;
2950 prot_type = QETH_PROT_LAYER2;
2952 prot_type = QETH_PROT_TCPIP;
2953 qeth_prepare_ipa_cmd(card, iob, prot_type);
2954 rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
2955 iob, reply_cb, reply_param);
2957 qeth_clear_ipacmd_list(card);
2958 qeth_schedule_recovery(card);
2962 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2964 static int qeth_send_startlan(struct qeth_card *card)
2967 struct qeth_cmd_buffer *iob;
2969 QETH_DBF_TEXT(SETUP, 2, "strtlan");
2971 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
2974 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
2978 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
2979 struct qeth_reply *reply, unsigned long data)
2981 struct qeth_ipa_cmd *cmd;
2983 QETH_CARD_TEXT(card, 4, "defadpcb");
2985 cmd = (struct qeth_ipa_cmd *) data;
2986 if (cmd->hdr.return_code == 0)
2987 cmd->hdr.return_code =
2988 cmd->data.setadapterparms.hdr.return_code;
2992 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2993 struct qeth_reply *reply, unsigned long data)
2995 struct qeth_ipa_cmd *cmd;
2997 QETH_CARD_TEXT(card, 3, "quyadpcb");
2999 cmd = (struct qeth_ipa_cmd *) data;
3000 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3001 card->info.link_type =
3002 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3003 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3005 card->options.adp.supported_funcs =
3006 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3007 return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
3010 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3011 __u32 command, __u32 cmdlen)
3013 struct qeth_cmd_buffer *iob;
3014 struct qeth_ipa_cmd *cmd;
3016 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3019 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3020 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3021 cmd->data.setadapterparms.hdr.command_code = command;
3022 cmd->data.setadapterparms.hdr.used_total = 1;
3023 cmd->data.setadapterparms.hdr.seq_no = 1;
3029 int qeth_query_setadapterparms(struct qeth_card *card)
3032 struct qeth_cmd_buffer *iob;
3034 QETH_CARD_TEXT(card, 3, "queryadp");
3035 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3036 sizeof(struct qeth_ipacmd_setadpparms));
3039 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3042 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3044 static int qeth_query_ipassists_cb(struct qeth_card *card,
3045 struct qeth_reply *reply, unsigned long data)
3047 struct qeth_ipa_cmd *cmd;
3049 QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3051 cmd = (struct qeth_ipa_cmd *) data;
3053 switch (cmd->hdr.return_code) {
3054 case IPA_RC_NOTSUPP:
3055 case IPA_RC_L2_UNSUPPORTED_CMD:
3056 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3057 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3058 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3061 if (cmd->hdr.return_code) {
3062 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3064 dev_name(&card->gdev->dev),
3065 cmd->hdr.return_code);
3070 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3071 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3072 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3073 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3074 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3075 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3077 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3078 "\n", dev_name(&card->gdev->dev));
3082 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3085 struct qeth_cmd_buffer *iob;
3087 QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3088 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3091 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3094 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3096 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3097 struct qeth_reply *reply, unsigned long data)
3099 struct qeth_ipa_cmd *cmd;
3100 struct qeth_switch_info *sw_info;
3101 struct qeth_query_switch_attributes *attrs;
3103 QETH_CARD_TEXT(card, 2, "qswiatcb");
3104 cmd = (struct qeth_ipa_cmd *) data;
3105 sw_info = (struct qeth_switch_info *)reply->param;
3106 if (cmd->data.setadapterparms.hdr.return_code == 0) {
3107 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3108 sw_info->capabilities = attrs->capabilities;
3109 sw_info->settings = attrs->settings;
3110 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3113 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
3118 int qeth_query_switch_attributes(struct qeth_card *card,
3119 struct qeth_switch_info *sw_info)
3121 struct qeth_cmd_buffer *iob;
3123 QETH_CARD_TEXT(card, 2, "qswiattr");
3124 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3126 if (!netif_carrier_ok(card->dev))
3128 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3129 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3132 return qeth_send_ipa_cmd(card, iob,
3133 qeth_query_switch_attributes_cb, sw_info);
3135 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3137 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3138 struct qeth_reply *reply, unsigned long data)
3140 struct qeth_ipa_cmd *cmd;
3143 cmd = (struct qeth_ipa_cmd *)data;
3144 rc = cmd->hdr.return_code;
3146 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3148 card->info.diagass_support = cmd->data.diagass.ext;
3152 static int qeth_query_setdiagass(struct qeth_card *card)
3154 struct qeth_cmd_buffer *iob;
3155 struct qeth_ipa_cmd *cmd;
3157 QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3158 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3161 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3162 cmd->data.diagass.subcmd_len = 16;
3163 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3164 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3167 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3169 unsigned long info = get_zeroed_page(GFP_KERNEL);
3170 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3171 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3172 struct ccw_dev_id ccwid;
3175 tid->chpid = card->info.chpid;
3176 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3177 tid->ssid = ccwid.ssid;
3178 tid->devno = ccwid.devno;
3181 level = stsi(NULL, 0, 0, 0);
3182 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3183 tid->lparnr = info222->lpar_number;
3184 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3185 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3186 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3192 static int qeth_hw_trap_cb(struct qeth_card *card,
3193 struct qeth_reply *reply, unsigned long data)
3195 struct qeth_ipa_cmd *cmd;
3198 cmd = (struct qeth_ipa_cmd *)data;
3199 rc = cmd->hdr.return_code;
3201 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3205 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3207 struct qeth_cmd_buffer *iob;
3208 struct qeth_ipa_cmd *cmd;
3210 QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3211 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3214 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
3215 cmd->data.diagass.subcmd_len = 80;
3216 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3217 cmd->data.diagass.type = 1;
3218 cmd->data.diagass.action = action;
3220 case QETH_DIAGS_TRAP_ARM:
3221 cmd->data.diagass.options = 0x0003;
3222 cmd->data.diagass.ext = 0x00010000 +
3223 sizeof(struct qeth_trap_id);
3224 qeth_get_trap_id(card,
3225 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3227 case QETH_DIAGS_TRAP_DISARM:
3228 cmd->data.diagass.options = 0x0001;
3230 case QETH_DIAGS_TRAP_CAPTURE:
3233 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3235 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3237 int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
3238 unsigned int qdio_error, const char *dbftext)
3241 QETH_CARD_TEXT(card, 2, dbftext);
3242 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3243 buf->element[15].sflags);
3244 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3245 buf->element[14].sflags);
3246 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3247 if ((buf->element[15].sflags) == 0x12) {
3248 card->stats.rx_dropped++;
3255 EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
3257 static void qeth_buffer_reclaim_work(struct work_struct *work)
3259 struct qeth_card *card = container_of(work, struct qeth_card,
3260 buffer_reclaim_work.work);
3262 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3263 qeth_queue_input_buffer(card, card->reclaim_index);
3266 void qeth_queue_input_buffer(struct qeth_card *card, int index)
3268 struct qeth_qdio_q *queue = card->qdio.in_q;
3269 struct list_head *lh;
3275 count = (index < queue->next_buf_to_init)?
3276 card->qdio.in_buf_pool.buf_count -
3277 (queue->next_buf_to_init - index) :
3278 card->qdio.in_buf_pool.buf_count -
3279 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3280 /* only requeue at a certain threshold to avoid SIGAs */
3281 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3282 for (i = queue->next_buf_to_init;
3283 i < queue->next_buf_to_init + count; ++i) {
3284 if (qeth_init_input_buffer(card,
3285 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3292 if (newcount < count) {
3293 /* we are in memory shortage so we switch back to
3294 traditional skb allocation and drop packages */
3295 atomic_set(&card->force_alloc_skb, 3);
3298 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3303 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3305 if (i == card->qdio.in_buf_pool.buf_count) {
3306 QETH_CARD_TEXT(card, 2, "qsarbw");
3307 card->reclaim_index = index;
3308 schedule_delayed_work(
3309 &card->buffer_reclaim_work,
3310 QETH_RECLAIM_WORK_TIME);
3316 * according to old code it should be avoided to requeue all
3317 * 128 buffers in order to benefit from PCI avoidance.
3318 * this function keeps at least one buffer (the buffer at
3319 * 'index') un-requeued -> this buffer is the first buffer that
3320 * will be requeued the next time
3322 if (card->options.performance_stats) {
3323 card->perf_stats.inbound_do_qdio_cnt++;
3324 card->perf_stats.inbound_do_qdio_start_time =
3327 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3328 queue->next_buf_to_init, count);
3329 if (card->options.performance_stats)
3330 card->perf_stats.inbound_do_qdio_time +=
3332 card->perf_stats.inbound_do_qdio_start_time;
3334 QETH_CARD_TEXT(card, 2, "qinberr");
3336 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3337 QDIO_MAX_BUFFERS_PER_Q;
3340 EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
3342 static int qeth_handle_send_error(struct qeth_card *card,
3343 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3345 int sbalf15 = buffer->buffer->element[15].sflags;
3347 QETH_CARD_TEXT(card, 6, "hdsnderr");
3348 if (card->info.type == QETH_CARD_TYPE_IQD) {
3355 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3358 return QETH_SEND_ERROR_NONE;
3360 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3361 return QETH_SEND_ERROR_RETRY;
3363 QETH_CARD_TEXT(card, 1, "lnkfail");
3364 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3365 (u16)qdio_err, (u8)sbalf15);
3366 return QETH_SEND_ERROR_LINK_FAILURE;
3370 * Switched to packing state if the number of used buffers on a queue
3371 * reaches a certain limit.
3373 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3375 if (!queue->do_pack) {
3376 if (atomic_read(&queue->used_buffers)
3377 >= QETH_HIGH_WATERMARK_PACK){
3378 /* switch non-PACKING -> PACKING */
3379 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3380 if (queue->card->options.performance_stats)
3381 queue->card->perf_stats.sc_dp_p++;
3388 * Switches from packing to non-packing mode. If there is a packing
3389 * buffer on the queue this buffer will be prepared to be flushed.
3390 * In that case 1 is returned to inform the caller. If no buffer
3391 * has to be flushed, zero is returned.
3393 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3395 struct qeth_qdio_out_buffer *buffer;
3396 int flush_count = 0;
3398 if (queue->do_pack) {
3399 if (atomic_read(&queue->used_buffers)
3400 <= QETH_LOW_WATERMARK_PACK) {
3401 /* switch PACKING -> non-PACKING */
3402 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3403 if (queue->card->options.performance_stats)
3404 queue->card->perf_stats.sc_p_dp++;
3406 /* flush packing buffers */
3407 buffer = queue->bufs[queue->next_buf_to_fill];
3408 if ((atomic_read(&buffer->state) ==
3409 QETH_QDIO_BUF_EMPTY) &&
3410 (buffer->next_element_to_fill > 0)) {
3411 atomic_set(&buffer->state,
3412 QETH_QDIO_BUF_PRIMED);
3414 queue->next_buf_to_fill =
3415 (queue->next_buf_to_fill + 1) %
3416 QDIO_MAX_BUFFERS_PER_Q;
3425 * Called to flush a packing buffer if no more pci flags are on the queue.
3426 * Checks if there is a packing buffer and prepares it to be flushed.
3427 * In that case returns 1, otherwise zero.
3429 static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
3431 struct qeth_qdio_out_buffer *buffer;
3433 buffer = queue->bufs[queue->next_buf_to_fill];
3434 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3435 (buffer->next_element_to_fill > 0)) {
3436 /* it's a packing buffer */
3437 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3438 queue->next_buf_to_fill =
3439 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3445 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3448 struct qeth_qdio_out_buffer *buf;
3451 unsigned int qdio_flags;
3453 for (i = index; i < index + count; ++i) {
3454 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3455 buf = queue->bufs[bidx];
3456 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3457 SBAL_EFLAGS_LAST_ENTRY;
3459 if (queue->bufstates)
3460 queue->bufstates[bidx].user = buf;
3462 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3465 if (!queue->do_pack) {
3466 if ((atomic_read(&queue->used_buffers) >=
3467 (QETH_HIGH_WATERMARK_PACK -
3468 QETH_WATERMARK_PACK_FUZZ)) &&
3469 !atomic_read(&queue->set_pci_flags_count)) {
3470 /* it's likely that we'll go to packing
3472 atomic_inc(&queue->set_pci_flags_count);
3473 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3476 if (!atomic_read(&queue->set_pci_flags_count)) {
3478 * there's no outstanding PCI any more, so we
3479 * have to request a PCI to be sure the the PCI
3480 * will wake at some time in the future then we
3481 * can flush packed buffers that might still be
3482 * hanging around, which can happen if no
3483 * further send was requested by the stack
3485 atomic_inc(&queue->set_pci_flags_count);
3486 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3491 netif_trans_update(queue->card->dev);
3492 if (queue->card->options.performance_stats) {
3493 queue->card->perf_stats.outbound_do_qdio_cnt++;
3494 queue->card->perf_stats.outbound_do_qdio_start_time =
3497 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3498 if (atomic_read(&queue->set_pci_flags_count))
3499 qdio_flags |= QDIO_FLAG_PCI_OUT;
3500 atomic_add(count, &queue->used_buffers);
3502 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3503 queue->queue_no, index, count);
3504 if (queue->card->options.performance_stats)
3505 queue->card->perf_stats.outbound_do_qdio_time +=
3507 queue->card->perf_stats.outbound_do_qdio_start_time;
3509 queue->card->stats.tx_errors += count;
3510 /* ignore temporary SIGA errors without busy condition */
3513 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3514 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3515 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3516 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3517 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3519 /* this must not happen under normal circumstances. if it
3520 * happens something is really wrong -> recover */
3521 qeth_schedule_recovery(queue->card);
3524 if (queue->card->options.performance_stats)
3525 queue->card->perf_stats.bufs_sent += count;
3528 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3532 int q_was_packing = 0;
3535 * check if weed have to switch to non-packing mode or if
3536 * we have to get a pci flag out on the queue
3538 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3539 !atomic_read(&queue->set_pci_flags_count)) {
3540 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3541 QETH_OUT_Q_UNLOCKED) {
3543 * If we get in here, there was no action in
3544 * do_send_packet. So, we check if there is a
3545 * packing buffer to be flushed here.
3547 netif_stop_queue(queue->card->dev);
3548 index = queue->next_buf_to_fill;
3549 q_was_packing = queue->do_pack;
3550 /* queue->do_pack may change */
3552 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3554 !atomic_read(&queue->set_pci_flags_count))
3556 qeth_flush_buffers_on_no_pci(queue);
3557 if (queue->card->options.performance_stats &&
3559 queue->card->perf_stats.bufs_sent_pack +=
3562 qeth_flush_buffers(queue, index, flush_cnt);
3563 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3568 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3569 unsigned long card_ptr)
3571 struct qeth_card *card = (struct qeth_card *)card_ptr;
3573 if (card->dev && (card->dev->flags & IFF_UP))
3574 napi_schedule(&card->napi);
3576 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3578 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3582 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3586 if (card->options.cq == cq) {
3591 if (card->state != CARD_STATE_DOWN &&
3592 card->state != CARD_STATE_RECOVER) {
3597 qeth_free_qdio_buffers(card);
3598 card->options.cq = cq;
3605 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3608 static void qeth_qdio_cq_handler(struct qeth_card *card,
3609 unsigned int qdio_err,
3610 unsigned int queue, int first_element, int count) {
3611 struct qeth_qdio_q *cq = card->qdio.c_q;
3615 if (!qeth_is_cq(card, queue))
3618 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3619 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3620 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3623 netif_stop_queue(card->dev);
3624 qeth_schedule_recovery(card);
3628 if (card->options.performance_stats) {
3629 card->perf_stats.cq_cnt++;
3630 card->perf_stats.cq_start_time = qeth_get_micros();
3633 for (i = first_element; i < first_element + count; ++i) {
3634 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3635 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3639 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3640 buffer->element[e].addr) {
3641 unsigned long phys_aob_addr;
3643 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3644 qeth_qdio_handle_aob(card, phys_aob_addr);
3645 buffer->element[e].addr = NULL;
3646 buffer->element[e].eflags = 0;
3647 buffer->element[e].sflags = 0;
3648 buffer->element[e].length = 0;
3653 buffer->element[15].eflags = 0;
3654 buffer->element[15].sflags = 0;
3656 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3657 card->qdio.c_q->next_buf_to_init,
3660 dev_warn(&card->gdev->dev,
3661 "QDIO reported an error, rc=%i\n", rc);
3662 QETH_CARD_TEXT(card, 2, "qcqherr");
3664 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3665 + count) % QDIO_MAX_BUFFERS_PER_Q;
3667 netif_wake_queue(card->dev);
3669 if (card->options.performance_stats) {
3670 int delta_t = qeth_get_micros();
3671 delta_t -= card->perf_stats.cq_start_time;
3672 card->perf_stats.cq_time += delta_t;
3678 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3679 unsigned int queue, int first_elem, int count,
3680 unsigned long card_ptr)
3682 struct qeth_card *card = (struct qeth_card *)card_ptr;
3684 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3685 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3687 if (qeth_is_cq(card, queue))
3688 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3690 qeth_schedule_recovery(card);
3694 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3696 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3697 unsigned int qdio_error, int __queue, int first_element,
3698 int count, unsigned long card_ptr)
3700 struct qeth_card *card = (struct qeth_card *) card_ptr;
3701 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3702 struct qeth_qdio_out_buffer *buffer;
3705 QETH_CARD_TEXT(card, 6, "qdouhdl");
3706 if (qdio_error & QDIO_ERROR_FATAL) {
3707 QETH_CARD_TEXT(card, 2, "achkcond");
3708 netif_stop_queue(card->dev);
3709 qeth_schedule_recovery(card);
3712 if (card->options.performance_stats) {
3713 card->perf_stats.outbound_handler_cnt++;
3714 card->perf_stats.outbound_handler_start_time =
3717 for (i = first_element; i < (first_element + count); ++i) {
3718 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3719 buffer = queue->bufs[bidx];
3720 qeth_handle_send_error(card, buffer, qdio_error);
3722 if (queue->bufstates &&
3723 (queue->bufstates[bidx].flags &
3724 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3725 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3727 if (atomic_cmpxchg(&buffer->state,
3728 QETH_QDIO_BUF_PRIMED,
3729 QETH_QDIO_BUF_PENDING) ==
3730 QETH_QDIO_BUF_PRIMED) {
3731 qeth_notify_skbs(queue, buffer,
3734 buffer->aob = queue->bufstates[bidx].aob;
3735 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3736 QETH_CARD_TEXT(queue->card, 5, "aob");
3737 QETH_CARD_TEXT_(queue->card, 5, "%lx",
3738 virt_to_phys(buffer->aob));
3739 if (qeth_init_qdio_out_buf(queue, bidx)) {
3740 QETH_CARD_TEXT(card, 2, "outofbuf");
3741 qeth_schedule_recovery(card);
3744 if (card->options.cq == QETH_CQ_ENABLED) {
3745 enum iucv_tx_notify n;
3747 n = qeth_compute_cq_notification(
3748 buffer->buffer->element[15].sflags, 0);
3749 qeth_notify_skbs(queue, buffer, n);
3752 qeth_clear_output_buffer(queue, buffer,
3753 QETH_QDIO_BUF_EMPTY);
3755 qeth_cleanup_handled_pending(queue, bidx, 0);
3757 atomic_sub(count, &queue->used_buffers);
3758 /* check if we need to do something on this outbound queue */
3759 if (card->info.type != QETH_CARD_TYPE_IQD)
3760 qeth_check_outbound_queue(queue);
3762 netif_wake_queue(queue->card->dev);
3763 if (card->options.performance_stats)
3764 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3765 card->perf_stats.outbound_handler_start_time;
3767 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3769 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3770 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3772 if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3778 * Note: Function assumes that we have 4 outbound queues.
3780 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3781 int ipv, int cast_type)
3786 if (cast_type && card->info.is_multicast_different)
3787 return card->info.is_multicast_different &
3788 (card->qdio.no_out_queues - 1);
3790 switch (card->qdio.do_prio_queueing) {
3791 case QETH_PRIO_Q_ING_TOS:
3792 case QETH_PRIO_Q_ING_PREC:
3795 tos = ipv4_get_dsfield(ip_hdr(skb));
3798 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3801 return card->qdio.default_out_queue;
3803 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3804 return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3805 if (tos & IPTOS_MINCOST)
3806 return qeth_cut_iqd_prio(card, 3);
3807 if (tos & IPTOS_RELIABILITY)
3809 if (tos & IPTOS_THROUGHPUT)
3811 if (tos & IPTOS_LOWDELAY)
3814 case QETH_PRIO_Q_ING_SKB:
3815 if (skb->priority > 5)
3817 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3818 case QETH_PRIO_Q_ING_VLAN:
3819 tci = &((struct ethhdr *)skb->data)->h_proto;
3820 if (*tci == ETH_P_8021Q)
3821 return qeth_cut_iqd_prio(card, ~*(tci + 1) >>
3822 (VLAN_PRIO_SHIFT + 1) & 3);
3827 return card->qdio.default_out_queue;
3829 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3832 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3835 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3836 * fragmented part of the SKB. Returns zero for linear SKB.
3838 int qeth_get_elements_for_frags(struct sk_buff *skb)
3840 int cnt, elements = 0;
3842 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3843 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3845 elements += qeth_get_elements_for_range(
3846 (addr_t)skb_frag_address(frag),
3847 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3851 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3854 * qeth_get_elements_no() - find number of SBALEs for skb data, inc. frags.
3855 * @card: qeth card structure, to check max. elems.
3857 * @extra_elems: extra elems needed, to check against max.
3858 * @data_offset: range starts at skb->data + data_offset
3860 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3861 * skb data, including linear part and fragments. Checks if the result plus
3862 * extra_elems fits under the limit for the card. Returns 0 if it does not.
3863 * Note: extra_elems is not included in the returned result.
3865 int qeth_get_elements_no(struct qeth_card *card,
3866 struct sk_buff *skb, int extra_elems, int data_offset)
3868 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3869 int elements = qeth_get_elements_for_frags(skb);
3870 addr_t start = (addr_t)skb->data + data_offset;
3873 elements += qeth_get_elements_for_range(start, end);
3875 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3876 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3877 "(Number=%d / Length=%d). Discarded.\n",
3878 elements + extra_elems, skb->len);
3883 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3885 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3887 int hroom, inpage, rest;
3889 if (((unsigned long)skb->data & PAGE_MASK) !=
3890 (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3891 hroom = skb_headroom(skb);
3892 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3893 rest = len - inpage;
3896 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3899 *hdr = (struct qeth_hdr *)skb->data;
3900 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3904 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3906 static inline void __qeth_fill_buffer(struct sk_buff *skb,
3907 struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
3910 int length = skb_headlen(skb);
3915 struct skb_frag_struct *frag;
3917 element = *next_element_to_fill;
3919 first_lap = (is_tso == 0 ? 1 : 0);
3922 data = skb->data + offset;
3927 while (length > 0) {
3928 /* length_here is the remaining amount of data in this page */
3929 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3930 if (length < length_here)
3931 length_here = length;
3933 buffer->element[element].addr = data;
3934 buffer->element[element].length = length_here;
3935 length -= length_here;
3938 if (skb_shinfo(skb)->nr_frags)
3939 buffer->element[element].eflags =
3940 SBAL_EFLAGS_FIRST_FRAG;
3942 buffer->element[element].eflags = 0;
3944 buffer->element[element].eflags =
3945 SBAL_EFLAGS_MIDDLE_FRAG;
3948 buffer->element[element].eflags =
3949 SBAL_EFLAGS_FIRST_FRAG;
3951 buffer->element[element].eflags =
3952 SBAL_EFLAGS_MIDDLE_FRAG;
3954 data += length_here;
3959 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3960 frag = &skb_shinfo(skb)->frags[cnt];
3961 data = (char *)page_to_phys(skb_frag_page(frag)) +
3963 length = frag->size;
3964 while (length > 0) {
3965 length_here = PAGE_SIZE -
3966 ((unsigned long) data % PAGE_SIZE);
3967 if (length < length_here)
3968 length_here = length;
3970 buffer->element[element].addr = data;
3971 buffer->element[element].length = length_here;
3972 buffer->element[element].eflags =
3973 SBAL_EFLAGS_MIDDLE_FRAG;
3974 length -= length_here;
3975 data += length_here;
3980 if (buffer->element[element - 1].eflags)
3981 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3982 *next_element_to_fill = element;
3985 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3986 struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
3987 struct qeth_hdr *hdr, int offset, int hd_len)
3989 struct qdio_buffer *buffer;
3990 int flush_cnt = 0, hdr_len, large_send = 0;
3992 buffer = buf->buffer;
3993 atomic_inc(&skb->users);
3994 skb_queue_tail(&buf->skb_list, skb);
3996 /*check first on TSO ....*/
3997 if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
3998 int element = buf->next_element_to_fill;
4000 hdr_len = sizeof(struct qeth_hdr_tso) +
4001 ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
4002 /*fill first buffer entry only with header information */
4003 buffer->element[element].addr = skb->data;
4004 buffer->element[element].length = hdr_len;
4005 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4006 buf->next_element_to_fill++;
4007 skb->data += hdr_len;
4008 skb->len -= hdr_len;
4013 int element = buf->next_element_to_fill;
4014 buffer->element[element].addr = hdr;
4015 buffer->element[element].length = sizeof(struct qeth_hdr) +
4017 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4018 buf->is_header[element] = 1;
4019 buf->next_element_to_fill++;
4022 __qeth_fill_buffer(skb, buffer, large_send,
4023 (int *)&buf->next_element_to_fill, offset);
4025 if (!queue->do_pack) {
4026 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4027 /* set state to PRIMED -> will be flushed */
4028 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4031 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4032 if (queue->card->options.performance_stats)
4033 queue->card->perf_stats.skbs_sent_pack++;
4034 if (buf->next_element_to_fill >=
4035 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4037 * packed buffer if full -> set state PRIMED
4038 * -> will be flushed
4040 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4047 int qeth_do_send_packet_fast(struct qeth_card *card,
4048 struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4049 struct qeth_hdr *hdr, int elements_needed,
4050 int offset, int hd_len)
4052 struct qeth_qdio_out_buffer *buffer;
4055 /* spin until we get the queue ... */
4056 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4057 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4058 /* ... now we've got the queue */
4059 index = queue->next_buf_to_fill;
4060 buffer = queue->bufs[queue->next_buf_to_fill];
4062 * check if buffer is empty to make sure that we do not 'overtake'
4063 * ourselves and try to fill a buffer that is already primed
4065 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4067 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
4068 QDIO_MAX_BUFFERS_PER_Q;
4069 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4070 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4071 qeth_flush_buffers(queue, index, 1);
4074 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4077 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4079 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4080 struct sk_buff *skb, struct qeth_hdr *hdr,
4081 int elements_needed)
4083 struct qeth_qdio_out_buffer *buffer;
4085 int flush_count = 0;
4090 /* spin until we get the queue ... */
4091 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4092 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4093 start_index = queue->next_buf_to_fill;
4094 buffer = queue->bufs[queue->next_buf_to_fill];
4096 * check if buffer is empty to make sure that we do not 'overtake'
4097 * ourselves and try to fill a buffer that is already primed
4099 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4100 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4103 /* check if we need to switch packing state of this queue */
4104 qeth_switch_to_packing_if_needed(queue);
4105 if (queue->do_pack) {
4107 /* does packet fit in current buffer? */
4108 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4109 buffer->next_element_to_fill) < elements_needed) {
4110 /* ... no -> set state PRIMED */
4111 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4113 queue->next_buf_to_fill =
4114 (queue->next_buf_to_fill + 1) %
4115 QDIO_MAX_BUFFERS_PER_Q;
4116 buffer = queue->bufs[queue->next_buf_to_fill];
4117 /* we did a step forward, so check buffer state
4119 if (atomic_read(&buffer->state) !=
4120 QETH_QDIO_BUF_EMPTY) {
4121 qeth_flush_buffers(queue, start_index,
4123 atomic_set(&queue->state,
4124 QETH_OUT_Q_UNLOCKED);
4129 tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
4130 queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4131 QDIO_MAX_BUFFERS_PER_Q;
4134 qeth_flush_buffers(queue, start_index, flush_count);
4135 else if (!atomic_read(&queue->set_pci_flags_count))
4136 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4138 * queue->state will go from LOCKED -> UNLOCKED or from
4139 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4140 * (switch packing state or flush buffer to get another pci flag out).
4141 * In that case we will enter this loop
4143 while (atomic_dec_return(&queue->state)) {
4145 start_index = queue->next_buf_to_fill;
4146 /* check if we can go back to non-packing state */
4147 flush_count += qeth_switch_to_nonpacking_if_needed(queue);
4149 * check if we need to flush a packing buffer to get a pci
4150 * flag out on the queue
4152 if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
4153 flush_count += qeth_flush_buffers_on_no_pci(queue);
4155 qeth_flush_buffers(queue, start_index, flush_count);
4157 /* at this point the queue is UNLOCKED again */
4158 if (queue->card->options.performance_stats && do_pack)
4159 queue->card->perf_stats.bufs_sent_pack += flush_count;
4163 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4165 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4166 struct qeth_reply *reply, unsigned long data)
4168 struct qeth_ipa_cmd *cmd;
4169 struct qeth_ipacmd_setadpparms *setparms;
4171 QETH_CARD_TEXT(card, 4, "prmadpcb");
4173 cmd = (struct qeth_ipa_cmd *) data;
4174 setparms = &(cmd->data.setadapterparms);
4176 qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
4177 if (cmd->hdr.return_code) {
4178 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4179 setparms->data.mode = SET_PROMISC_MODE_OFF;
4181 card->info.promisc_mode = setparms->data.mode;
4185 void qeth_setadp_promisc_mode(struct qeth_card *card)
4187 enum qeth_ipa_promisc_modes mode;
4188 struct net_device *dev = card->dev;
4189 struct qeth_cmd_buffer *iob;
4190 struct qeth_ipa_cmd *cmd;
4192 QETH_CARD_TEXT(card, 4, "setprom");
4194 if (((dev->flags & IFF_PROMISC) &&
4195 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4196 (!(dev->flags & IFF_PROMISC) &&
4197 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4199 mode = SET_PROMISC_MODE_OFF;
4200 if (dev->flags & IFF_PROMISC)
4201 mode = SET_PROMISC_MODE_ON;
4202 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4204 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4205 sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4208 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
4209 cmd->data.setadapterparms.data.mode = mode;
4210 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4212 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4214 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4216 struct qeth_card *card;
4219 card = dev->ml_priv;
4221 QETH_CARD_TEXT(card, 4, "chgmtu");
4222 sprintf(dbf_text, "%8x", new_mtu);
4223 QETH_CARD_TEXT(card, 4, dbf_text);
4227 if (new_mtu > 65535)
4229 if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
4230 (!qeth_mtu_is_valid(card, new_mtu)))
4235 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4237 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4239 struct qeth_card *card;
4241 card = dev->ml_priv;
4243 QETH_CARD_TEXT(card, 5, "getstat");
4245 return &card->stats;
4247 EXPORT_SYMBOL_GPL(qeth_get_stats);
4249 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4250 struct qeth_reply *reply, unsigned long data)
4252 struct qeth_ipa_cmd *cmd;
4254 QETH_CARD_TEXT(card, 4, "chgmaccb");
4256 cmd = (struct qeth_ipa_cmd *) data;
4257 if (!card->options.layer2 ||
4258 !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4259 memcpy(card->dev->dev_addr,
4260 &cmd->data.setadapterparms.data.change_addr.addr,
4262 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4264 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4268 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4271 struct qeth_cmd_buffer *iob;
4272 struct qeth_ipa_cmd *cmd;
4274 QETH_CARD_TEXT(card, 4, "chgmac");
4276 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4277 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4278 sizeof(struct qeth_change_addr));
4281 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4282 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4283 cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
4284 memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
4285 card->dev->dev_addr, OSA_ADDR_LEN);
4286 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4290 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4292 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4293 struct qeth_reply *reply, unsigned long data)
4295 struct qeth_ipa_cmd *cmd;
4296 struct qeth_set_access_ctrl *access_ctrl_req;
4297 int fallback = *(int *)reply->param;
4299 QETH_CARD_TEXT(card, 4, "setaccb");
4301 cmd = (struct qeth_ipa_cmd *) data;
4302 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4303 QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4304 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4305 QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4306 cmd->data.setadapterparms.hdr.return_code);
4307 if (cmd->data.setadapterparms.hdr.return_code !=
4308 SET_ACCESS_CTRL_RC_SUCCESS)
4309 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4310 card->gdev->dev.kobj.name,
4311 access_ctrl_req->subcmd_code,
4312 cmd->data.setadapterparms.hdr.return_code);
4313 switch (cmd->data.setadapterparms.hdr.return_code) {
4314 case SET_ACCESS_CTRL_RC_SUCCESS:
4315 if (card->options.isolation == ISOLATION_MODE_NONE) {
4316 dev_info(&card->gdev->dev,
4317 "QDIO data connection isolation is deactivated\n");
4319 dev_info(&card->gdev->dev,
4320 "QDIO data connection isolation is activated\n");
4323 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4324 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4325 "deactivated\n", dev_name(&card->gdev->dev));
4327 card->options.isolation = card->options.prev_isolation;
4329 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4330 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4331 " activated\n", dev_name(&card->gdev->dev));
4333 card->options.isolation = card->options.prev_isolation;
4335 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4336 dev_err(&card->gdev->dev, "Adapter does not "
4337 "support QDIO data connection isolation\n");
4339 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4340 dev_err(&card->gdev->dev,
4341 "Adapter is dedicated. "
4342 "QDIO data connection isolation not supported\n");
4344 card->options.isolation = card->options.prev_isolation;
4346 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4347 dev_err(&card->gdev->dev,
4348 "TSO does not permit QDIO data connection isolation\n");
4350 card->options.isolation = card->options.prev_isolation;
4352 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4353 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4354 "support reflective relay mode\n");
4356 card->options.isolation = card->options.prev_isolation;
4358 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4359 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4360 "enabled at the adjacent switch port");
4362 card->options.isolation = card->options.prev_isolation;
4364 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4365 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4366 "at the adjacent switch failed\n");
4369 /* this should never happen */
4371 card->options.isolation = card->options.prev_isolation;
4374 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4378 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4379 enum qeth_ipa_isolation_modes isolation, int fallback)
4382 struct qeth_cmd_buffer *iob;
4383 struct qeth_ipa_cmd *cmd;
4384 struct qeth_set_access_ctrl *access_ctrl_req;
4386 QETH_CARD_TEXT(card, 4, "setacctl");
4388 QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4389 QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4391 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4392 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4393 sizeof(struct qeth_set_access_ctrl));
4396 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4397 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4398 access_ctrl_req->subcmd_code = isolation;
4400 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4402 QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4406 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4410 QETH_CARD_TEXT(card, 4, "setactlo");
4412 if ((card->info.type == QETH_CARD_TYPE_OSD ||
4413 card->info.type == QETH_CARD_TYPE_OSX) &&
4414 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4415 rc = qeth_setadpparms_set_access_ctrl(card,
4416 card->options.isolation, fallback);
4419 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4420 card->gdev->dev.kobj.name,
4424 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4425 card->options.isolation = ISOLATION_MODE_NONE;
4427 dev_err(&card->gdev->dev, "Adapter does not "
4428 "support QDIO data connection isolation\n");
4433 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4435 void qeth_tx_timeout(struct net_device *dev)
4437 struct qeth_card *card;
4439 card = dev->ml_priv;
4440 QETH_CARD_TEXT(card, 4, "txtimeo");
4441 card->stats.tx_errors++;
4442 qeth_schedule_recovery(card);
4444 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4446 int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4448 struct qeth_card *card = dev->ml_priv;
4452 case MII_BMCR: /* Basic mode control register */
4454 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4455 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4456 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4457 rc |= BMCR_SPEED100;
4459 case MII_BMSR: /* Basic mode status register */
4460 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4461 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4464 case MII_PHYSID1: /* PHYS ID 1 */
4465 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4467 rc = (rc >> 5) & 0xFFFF;
4469 case MII_PHYSID2: /* PHYS ID 2 */
4470 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4472 case MII_ADVERTISE: /* Advertisement control reg */
4475 case MII_LPA: /* Link partner ability reg */
4476 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4477 LPA_100BASE4 | LPA_LPACK;
4479 case MII_EXPANSION: /* Expansion register */
4481 case MII_DCOUNTER: /* disconnect counter */
4483 case MII_FCSCOUNTER: /* false carrier counter */
4485 case MII_NWAYTEST: /* N-way auto-neg test register */
4487 case MII_RERRCOUNTER: /* rx error counter */
4488 rc = card->stats.rx_errors;
4490 case MII_SREVISION: /* silicon revision */
4492 case MII_RESV1: /* reserved 1 */
4494 case MII_LBRERROR: /* loopback, rx, bypass error */
4496 case MII_PHYADDR: /* physical address */
4498 case MII_RESV2: /* reserved 2 */
4500 case MII_TPISTATUS: /* TPI status for 10mbps */
4502 case MII_NCONFIG: /* network interface config */
4509 EXPORT_SYMBOL_GPL(qeth_mdio_read);
4511 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4512 struct qeth_cmd_buffer *iob, int len,
4513 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4519 QETH_CARD_TEXT(card, 4, "sendsnmp");
4521 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4522 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4523 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4524 /* adjust PDU length fields in IPA_PDU_HEADER */
4525 s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4527 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4528 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4529 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4530 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4531 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4532 reply_cb, reply_param);
4535 static int qeth_snmp_command_cb(struct qeth_card *card,
4536 struct qeth_reply *reply, unsigned long sdata)
4538 struct qeth_ipa_cmd *cmd;
4539 struct qeth_arp_query_info *qinfo;
4540 unsigned char *data;
4544 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4546 cmd = (struct qeth_ipa_cmd *) sdata;
4547 data = (unsigned char *)((char *)cmd - reply->offset);
4548 qinfo = (struct qeth_arp_query_info *) reply->param;
4550 if (cmd->hdr.return_code) {
4551 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4554 if (cmd->data.setadapterparms.hdr.return_code) {
4555 cmd->hdr.return_code =
4556 cmd->data.setadapterparms.hdr.return_code;
4557 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4560 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4561 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4562 snmp_data = &cmd->data.setadapterparms.data.snmp;
4563 data_len -= offsetof(struct qeth_ipa_cmd,
4564 data.setadapterparms.data.snmp);
4566 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4567 data_len -= offsetof(struct qeth_ipa_cmd,
4568 data.setadapterparms.data.snmp.request);
4571 /* check if there is enough room in userspace */
4572 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4573 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4574 cmd->hdr.return_code = IPA_RC_ENOMEM;
4577 QETH_CARD_TEXT_(card, 4, "snore%i",
4578 cmd->data.setadapterparms.hdr.used_total);
4579 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4580 cmd->data.setadapterparms.hdr.seq_no);
4581 /*copy entries to user buffer*/
4582 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4583 qinfo->udata_offset += data_len;
4585 /* check if all replies received ... */
4586 QETH_CARD_TEXT_(card, 4, "srtot%i",
4587 cmd->data.setadapterparms.hdr.used_total);
4588 QETH_CARD_TEXT_(card, 4, "srseq%i",
4589 cmd->data.setadapterparms.hdr.seq_no);
4590 if (cmd->data.setadapterparms.hdr.seq_no <
4591 cmd->data.setadapterparms.hdr.used_total)
4596 int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4598 struct qeth_cmd_buffer *iob;
4599 struct qeth_ipa_cmd *cmd;
4600 struct qeth_snmp_ureq *ureq;
4601 unsigned int req_len;
4602 struct qeth_arp_query_info qinfo = {0, };
4605 QETH_CARD_TEXT(card, 3, "snmpcmd");
4607 if (card->info.guestlan)
4610 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4611 (!card->options.layer2)) {
4614 /* skip 4 bytes (data_len struct member) to get req_len */
4615 if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4617 if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4618 sizeof(struct qeth_ipacmd_hdr) -
4619 sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4621 ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4623 QETH_CARD_TEXT(card, 2, "snmpnome");
4624 return PTR_ERR(ureq);
4626 qinfo.udata_len = ureq->hdr.data_len;
4627 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4632 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4634 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4635 QETH_SNMP_SETADP_CMDLENGTH + req_len);
4640 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4641 memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4642 rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4643 qeth_snmp_command_cb, (void *)&qinfo);
4645 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4646 QETH_CARD_IFNAME(card), rc);
4648 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4656 EXPORT_SYMBOL_GPL(qeth_snmp_command);
4658 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4659 struct qeth_reply *reply, unsigned long data)
4661 struct qeth_ipa_cmd *cmd;
4662 struct qeth_qoat_priv *priv;
4666 QETH_CARD_TEXT(card, 3, "qoatcb");
4668 cmd = (struct qeth_ipa_cmd *)data;
4669 priv = (struct qeth_qoat_priv *)reply->param;
4670 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4671 resdata = (char *)data + 28;
4673 if (resdatalen > (priv->buffer_len - priv->response_len)) {
4674 cmd->hdr.return_code = IPA_RC_FFFF;
4678 memcpy((priv->buffer + priv->response_len), resdata,
4680 priv->response_len += resdatalen;
4682 if (cmd->data.setadapterparms.hdr.seq_no <
4683 cmd->data.setadapterparms.hdr.used_total)
4688 int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4691 struct qeth_cmd_buffer *iob;
4692 struct qeth_ipa_cmd *cmd;
4693 struct qeth_query_oat *oat_req;
4694 struct qeth_query_oat_data oat_data;
4695 struct qeth_qoat_priv priv;
4698 QETH_CARD_TEXT(card, 3, "qoatcmd");
4700 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4705 if (copy_from_user(&oat_data, udata,
4706 sizeof(struct qeth_query_oat_data))) {
4711 priv.buffer_len = oat_data.buffer_len;
4712 priv.response_len = 0;
4713 priv.buffer = vzalloc(oat_data.buffer_len);
4719 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4720 sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4721 sizeof(struct qeth_query_oat));
4726 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
4727 oat_req = &cmd->data.setadapterparms.data.query_oat;
4728 oat_req->subcmd_code = oat_data.command;
4730 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4733 if (is_compat_task())
4734 tmp = compat_ptr(oat_data.ptr);
4736 tmp = (void __user *)(unsigned long)oat_data.ptr;
4738 if (copy_to_user(tmp, priv.buffer,
4739 priv.response_len)) {
4744 oat_data.response_len = priv.response_len;
4746 if (copy_to_user(udata, &oat_data,
4747 sizeof(struct qeth_query_oat_data)))
4750 if (rc == IPA_RC_FFFF)
4758 EXPORT_SYMBOL_GPL(qeth_query_oat_command);
4760 static int qeth_query_card_info_cb(struct qeth_card *card,
4761 struct qeth_reply *reply, unsigned long data)
4763 struct qeth_ipa_cmd *cmd;
4764 struct qeth_query_card_info *card_info;
4765 struct carrier_info *carrier_info;
4767 QETH_CARD_TEXT(card, 2, "qcrdincb");
4768 carrier_info = (struct carrier_info *)reply->param;
4769 cmd = (struct qeth_ipa_cmd *)data;
4770 card_info = &cmd->data.setadapterparms.data.card_info;
4771 if (cmd->data.setadapterparms.hdr.return_code == 0) {
4772 carrier_info->card_type = card_info->card_type;
4773 carrier_info->port_mode = card_info->port_mode;
4774 carrier_info->port_speed = card_info->port_speed;
4777 qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
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);
4797 static inline int qeth_get_qdio_q_format(struct qeth_card *card)
4799 switch (card->info.type) {
4800 case QETH_CARD_TYPE_IQD:
4807 static void qeth_determine_capabilities(struct qeth_card *card)
4812 struct ccw_device *ddev;
4813 int ddev_offline = 0;
4815 QETH_DBF_TEXT(SETUP, 2, "detcapab");
4816 ddev = CARD_DDEV(card);
4817 if (!ddev->online) {
4819 rc = ccw_device_set_online(ddev);
4821 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4826 rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4828 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4829 dev_name(&card->gdev->dev), rc);
4830 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4833 qeth_configure_unitaddr(card, prcd);
4835 qeth_configure_blkt_default(card, prcd);
4838 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4840 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4842 QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4843 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
4844 QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
4845 QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4846 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4847 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4848 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4849 dev_info(&card->gdev->dev,
4850 "Completion Queueing supported\n");
4852 card->options.cq = QETH_CQ_NOTAVAILABLE;
4857 if (ddev_offline == 1)
4858 ccw_device_set_offline(ddev);
4863 static inline void qeth_qdio_establish_cq(struct qeth_card *card,
4864 struct qdio_buffer **in_sbal_ptrs,
4865 void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
4868 if (card->options.cq == QETH_CQ_ENABLED) {
4869 int offset = QDIO_MAX_BUFFERS_PER_Q *
4870 (card->qdio.no_in_queues - 1);
4871 i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
4872 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4873 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4874 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4877 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4881 static int qeth_qdio_establish(struct qeth_card *card)
4883 struct qdio_initialize init_data;
4884 char *qib_param_field;
4885 struct qdio_buffer **in_sbal_ptrs;
4886 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4887 struct qdio_buffer **out_sbal_ptrs;
4891 QETH_DBF_TEXT(SETUP, 2, "qdioest");
4893 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4895 if (!qib_param_field) {
4897 goto out_free_nothing;
4900 qeth_create_qib_param_field(card, qib_param_field);
4901 qeth_create_qib_param_field_blkt(card, qib_param_field);
4903 in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4904 QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4906 if (!in_sbal_ptrs) {
4908 goto out_free_qib_param;
4910 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4911 in_sbal_ptrs[i] = (struct qdio_buffer *)
4912 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4915 queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4917 if (!queue_start_poll) {
4919 goto out_free_in_sbals;
4921 for (i = 0; i < card->qdio.no_in_queues; ++i)
4922 queue_start_poll[i] = card->discipline->start_poll;
4924 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4927 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
4928 sizeof(void *), GFP_KERNEL);
4929 if (!out_sbal_ptrs) {
4931 goto out_free_queue_start_poll;
4933 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4934 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4935 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4936 card->qdio.out_qs[i]->bufs[j]->buffer);
4939 memset(&init_data, 0, sizeof(struct qdio_initialize));
4940 init_data.cdev = CARD_DDEV(card);
4941 init_data.q_format = qeth_get_qdio_q_format(card);
4942 init_data.qib_param_field_format = 0;
4943 init_data.qib_param_field = qib_param_field;
4944 init_data.no_input_qs = card->qdio.no_in_queues;
4945 init_data.no_output_qs = card->qdio.no_out_queues;
4946 init_data.input_handler = card->discipline->input_handler;
4947 init_data.output_handler = card->discipline->output_handler;
4948 init_data.queue_start_poll_array = queue_start_poll;
4949 init_data.int_parm = (unsigned long) card;
4950 init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
4951 init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4952 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4953 init_data.scan_threshold =
4954 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
4956 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4957 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4958 rc = qdio_allocate(&init_data);
4960 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4963 rc = qdio_establish(&init_data);
4965 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4966 qdio_free(CARD_DDEV(card));
4970 switch (card->options.cq) {
4971 case QETH_CQ_ENABLED:
4972 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4974 case QETH_CQ_DISABLED:
4975 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4981 kfree(out_sbal_ptrs);
4982 out_free_queue_start_poll:
4983 kfree(queue_start_poll);
4985 kfree(in_sbal_ptrs);
4987 kfree(qib_param_field);
4992 static void qeth_core_free_card(struct qeth_card *card)
4995 QETH_DBF_TEXT(SETUP, 2, "freecrd");
4996 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
4997 qeth_clean_channel(&card->read);
4998 qeth_clean_channel(&card->write);
4999 qeth_free_qdio_buffers(card);
5000 unregister_service_level(&card->qeth_service_level);
5004 void qeth_trace_features(struct qeth_card *card)
5006 QETH_CARD_TEXT(card, 2, "features");
5007 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5008 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5009 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5010 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5011 sizeof(card->info.diagass_support));
5013 EXPORT_SYMBOL_GPL(qeth_trace_features);
5015 static struct ccw_device_id qeth_ids[] = {
5016 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5017 .driver_info = QETH_CARD_TYPE_OSD},
5018 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5019 .driver_info = QETH_CARD_TYPE_IQD},
5020 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5021 .driver_info = QETH_CARD_TYPE_OSN},
5022 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5023 .driver_info = QETH_CARD_TYPE_OSM},
5024 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5025 .driver_info = QETH_CARD_TYPE_OSX},
5028 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5030 static struct ccw_driver qeth_ccw_driver = {
5032 .owner = THIS_MODULE,
5036 .probe = ccwgroup_probe_ccwdev,
5037 .remove = ccwgroup_remove_ccwdev,
5040 int qeth_core_hardsetup_card(struct qeth_card *card)
5045 QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5046 atomic_set(&card->force_alloc_skb, 0);
5047 qeth_update_from_chp_desc(card);
5050 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5051 dev_name(&card->gdev->dev));
5052 rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5053 ccw_device_set_offline(CARD_DDEV(card));
5054 ccw_device_set_offline(CARD_WDEV(card));
5055 ccw_device_set_offline(CARD_RDEV(card));
5056 qdio_free(CARD_DDEV(card));
5057 rc = ccw_device_set_online(CARD_RDEV(card));
5060 rc = ccw_device_set_online(CARD_WDEV(card));
5063 rc = ccw_device_set_online(CARD_DDEV(card));
5067 if (rc == -ERESTARTSYS) {
5068 QETH_DBF_TEXT(SETUP, 2, "break1");
5071 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5077 qeth_determine_capabilities(card);
5078 qeth_init_tokens(card);
5079 qeth_init_func_level(card);
5080 rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5081 if (rc == -ERESTARTSYS) {
5082 QETH_DBF_TEXT(SETUP, 2, "break2");
5085 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5091 rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5092 if (rc == -ERESTARTSYS) {
5093 QETH_DBF_TEXT(SETUP, 2, "break3");
5096 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5102 card->read_or_write_problem = 0;
5103 rc = qeth_mpc_initialize(card);
5105 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5109 rc = qeth_send_startlan(card);
5111 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5112 if (rc == IPA_RC_LAN_OFFLINE) {
5113 dev_warn(&card->gdev->dev,
5114 "The LAN is offline\n");
5115 card->lan_online = 0;
5121 card->lan_online = 1;
5123 card->options.ipa4.supported_funcs = 0;
5124 card->options.ipa6.supported_funcs = 0;
5125 card->options.adp.supported_funcs = 0;
5126 card->options.sbp.supported_funcs = 0;
5127 card->info.diagass_support = 0;
5128 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5131 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5132 rc = qeth_query_setadapterparms(card);
5134 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5138 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5139 rc = qeth_query_setdiagass(card);
5141 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5147 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5148 "an error on the device\n");
5149 QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5150 dev_name(&card->gdev->dev), rc);
5153 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5155 static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
5156 struct qdio_buffer_element *element,
5157 struct sk_buff **pskb, int offset, int *pfrag, int data_len)
5159 struct page *page = virt_to_page(element->addr);
5160 if (*pskb == NULL) {
5161 if (qethbuffer->rx_skb) {
5162 /* only if qeth_card.options.cq == QETH_CQ_ENABLED */
5163 *pskb = qethbuffer->rx_skb;
5164 qethbuffer->rx_skb = NULL;
5166 *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
5171 skb_reserve(*pskb, ETH_HLEN);
5172 if (data_len <= QETH_RX_PULL_LEN) {
5173 memcpy(skb_put(*pskb, data_len), element->addr + offset,
5177 memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
5178 element->addr + offset, QETH_RX_PULL_LEN);
5179 skb_fill_page_desc(*pskb, *pfrag, page,
5180 offset + QETH_RX_PULL_LEN,
5181 data_len - QETH_RX_PULL_LEN);
5182 (*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
5183 (*pskb)->len += data_len - QETH_RX_PULL_LEN;
5184 (*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
5189 skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
5190 (*pskb)->data_len += data_len;
5191 (*pskb)->len += data_len;
5192 (*pskb)->truesize += data_len;
5200 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5202 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5205 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5206 struct qeth_qdio_buffer *qethbuffer,
5207 struct qdio_buffer_element **__element, int *__offset,
5208 struct qeth_hdr **hdr)
5210 struct qdio_buffer_element *element = *__element;
5211 struct qdio_buffer *buffer = qethbuffer->buffer;
5212 int offset = *__offset;
5213 struct sk_buff *skb = NULL;
5221 /* qeth_hdr must not cross element boundaries */
5222 if (element->length < offset + sizeof(struct qeth_hdr)) {
5223 if (qeth_is_last_sbale(element))
5227 if (element->length < sizeof(struct qeth_hdr))
5230 *hdr = element->addr + offset;
5232 offset += sizeof(struct qeth_hdr);
5233 switch ((*hdr)->hdr.l2.id) {
5234 case QETH_HEADER_TYPE_LAYER2:
5235 skb_len = (*hdr)->hdr.l2.pkt_length;
5237 case QETH_HEADER_TYPE_LAYER3:
5238 skb_len = (*hdr)->hdr.l3.length;
5239 headroom = ETH_HLEN;
5241 case QETH_HEADER_TYPE_OSN:
5242 skb_len = (*hdr)->hdr.osn.pdu_length;
5243 headroom = sizeof(struct qeth_hdr);
5252 if (((skb_len >= card->options.rx_sg_cb) &&
5253 (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5254 (!atomic_read(&card->force_alloc_skb))) ||
5255 (card->options.cq == QETH_CQ_ENABLED)) {
5258 skb = dev_alloc_skb(skb_len + headroom);
5262 skb_reserve(skb, headroom);
5265 data_ptr = element->addr + offset;
5267 data_len = min(skb_len, (int)(element->length - offset));
5270 if (qeth_create_skb_frag(qethbuffer, element,
5271 &skb, offset, &frag, data_len))
5274 memcpy(skb_put(skb, data_len), data_ptr,
5278 skb_len -= data_len;
5280 if (qeth_is_last_sbale(element)) {
5281 QETH_CARD_TEXT(card, 4, "unexeob");
5282 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5283 dev_kfree_skb_any(skb);
5284 card->stats.rx_errors++;
5289 data_ptr = element->addr;
5294 *__element = element;
5296 if (use_rx_sg && card->options.performance_stats) {
5297 card->perf_stats.sg_skbs_rx++;
5298 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5302 if (net_ratelimit()) {
5303 QETH_CARD_TEXT(card, 2, "noskbmem");
5305 card->stats.rx_dropped++;
5308 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5310 int qeth_setassparms_cb(struct qeth_card *card,
5311 struct qeth_reply *reply, unsigned long data)
5313 struct qeth_ipa_cmd *cmd;
5315 QETH_CARD_TEXT(card, 4, "defadpcb");
5317 cmd = (struct qeth_ipa_cmd *) data;
5318 if (cmd->hdr.return_code == 0) {
5319 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5320 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5321 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5322 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5323 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5325 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
5326 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5327 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
5328 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
5330 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
5331 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
5332 card->info.tx_csum_mask =
5333 cmd->data.setassparms.data.flags_32bit;
5334 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
5339 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5341 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5342 enum qeth_ipa_funcs ipa_func,
5343 __u16 cmd_code, __u16 len,
5344 enum qeth_prot_versions prot)
5346 struct qeth_cmd_buffer *iob;
5347 struct qeth_ipa_cmd *cmd;
5349 QETH_CARD_TEXT(card, 4, "getasscm");
5350 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5353 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5354 cmd->data.setassparms.hdr.assist_no = ipa_func;
5355 cmd->data.setassparms.hdr.length = 8 + len;
5356 cmd->data.setassparms.hdr.command_code = cmd_code;
5357 cmd->data.setassparms.hdr.return_code = 0;
5358 cmd->data.setassparms.hdr.seq_no = 0;
5363 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5365 int qeth_send_setassparms(struct qeth_card *card,
5366 struct qeth_cmd_buffer *iob, __u16 len, long data,
5367 int (*reply_cb)(struct qeth_card *,
5368 struct qeth_reply *, unsigned long),
5372 struct qeth_ipa_cmd *cmd;
5374 QETH_CARD_TEXT(card, 4, "sendassp");
5376 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
5377 if (len <= sizeof(__u32))
5378 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5379 else /* (len > sizeof(__u32)) */
5380 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5382 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5385 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5387 int qeth_send_simple_setassparms(struct qeth_card *card,
5388 enum qeth_ipa_funcs ipa_func,
5389 __u16 cmd_code, long data)
5393 struct qeth_cmd_buffer *iob;
5395 QETH_CARD_TEXT(card, 4, "simassp4");
5397 length = sizeof(__u32);
5398 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5399 length, QETH_PROT_IPV4);
5402 rc = qeth_send_setassparms(card, iob, length, data,
5403 qeth_setassparms_cb, NULL);
5406 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5408 static void qeth_unregister_dbf_views(void)
5411 for (x = 0; x < QETH_DBF_INFOS; x++) {
5412 debug_unregister(qeth_dbf[x].id);
5413 qeth_dbf[x].id = NULL;
5417 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5419 char dbf_txt_buf[32];
5422 if (!debug_level_enabled(id, level))
5424 va_start(args, fmt);
5425 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5427 debug_text_event(id, level, dbf_txt_buf);
5429 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5431 static int qeth_register_dbf_views(void)
5436 for (x = 0; x < QETH_DBF_INFOS; x++) {
5437 /* register the areas */
5438 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5442 if (qeth_dbf[x].id == NULL) {
5443 qeth_unregister_dbf_views();
5447 /* register a view */
5448 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5450 qeth_unregister_dbf_views();
5454 /* set a passing level */
5455 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5461 int qeth_core_load_discipline(struct qeth_card *card,
5462 enum qeth_discipline_id discipline)
5465 mutex_lock(&qeth_mod_mutex);
5466 switch (discipline) {
5467 case QETH_DISCIPLINE_LAYER3:
5468 card->discipline = try_then_request_module(
5469 symbol_get(qeth_l3_discipline), "qeth_l3");
5471 case QETH_DISCIPLINE_LAYER2:
5472 card->discipline = try_then_request_module(
5473 symbol_get(qeth_l2_discipline), "qeth_l2");
5476 if (!card->discipline) {
5477 dev_err(&card->gdev->dev, "There is no kernel module to "
5478 "support discipline %d\n", discipline);
5481 mutex_unlock(&qeth_mod_mutex);
5485 void qeth_core_free_discipline(struct qeth_card *card)
5487 if (card->options.layer2)
5488 symbol_put(qeth_l2_discipline);
5490 symbol_put(qeth_l3_discipline);
5491 card->discipline = NULL;
5494 const struct device_type qeth_generic_devtype = {
5495 .name = "qeth_generic",
5496 .groups = qeth_generic_attr_groups,
5498 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5500 static const struct device_type qeth_osn_devtype = {
5502 .groups = qeth_osn_attr_groups,
5505 #define DBF_NAME_LEN 20
5507 struct qeth_dbf_entry {
5508 char dbf_name[DBF_NAME_LEN];
5509 debug_info_t *dbf_info;
5510 struct list_head dbf_list;
5513 static LIST_HEAD(qeth_dbf_list);
5514 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5516 static debug_info_t *qeth_get_dbf_entry(char *name)
5518 struct qeth_dbf_entry *entry;
5519 debug_info_t *rc = NULL;
5521 mutex_lock(&qeth_dbf_list_mutex);
5522 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5523 if (strcmp(entry->dbf_name, name) == 0) {
5524 rc = entry->dbf_info;
5528 mutex_unlock(&qeth_dbf_list_mutex);
5532 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5534 struct qeth_dbf_entry *new_entry;
5536 card->debug = debug_register(name, 2, 1, 8);
5538 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5541 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5543 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5546 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5547 new_entry->dbf_info = card->debug;
5548 mutex_lock(&qeth_dbf_list_mutex);
5549 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5550 mutex_unlock(&qeth_dbf_list_mutex);
5555 debug_unregister(card->debug);
5560 static void qeth_clear_dbf_list(void)
5562 struct qeth_dbf_entry *entry, *tmp;
5564 mutex_lock(&qeth_dbf_list_mutex);
5565 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5566 list_del(&entry->dbf_list);
5567 debug_unregister(entry->dbf_info);
5570 mutex_unlock(&qeth_dbf_list_mutex);
5573 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5575 struct qeth_card *card;
5578 unsigned long flags;
5579 char dbf_name[DBF_NAME_LEN];
5581 QETH_DBF_TEXT(SETUP, 2, "probedev");
5584 if (!get_device(dev))
5587 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5589 card = qeth_alloc_card();
5591 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5596 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5597 dev_name(&gdev->dev));
5598 card->debug = qeth_get_dbf_entry(dbf_name);
5600 rc = qeth_add_dbf_entry(card, dbf_name);
5605 card->read.ccwdev = gdev->cdev[0];
5606 card->write.ccwdev = gdev->cdev[1];
5607 card->data.ccwdev = gdev->cdev[2];
5608 dev_set_drvdata(&gdev->dev, card);
5610 gdev->cdev[0]->handler = qeth_irq;
5611 gdev->cdev[1]->handler = qeth_irq;
5612 gdev->cdev[2]->handler = qeth_irq;
5614 rc = qeth_determine_card_type(card);
5616 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5619 rc = qeth_setup_card(card);
5621 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5625 switch (card->info.type) {
5626 case QETH_CARD_TYPE_OSN:
5627 case QETH_CARD_TYPE_OSM:
5628 rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5632 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5633 ? card->discipline->devtype
5634 : &qeth_osn_devtype;
5635 rc = card->discipline->setup(card->gdev);
5640 gdev->dev.type = &qeth_generic_devtype;
5644 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5645 list_add_tail(&card->list, &qeth_core_card_list.list);
5646 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5648 qeth_determine_capabilities(card);
5652 qeth_core_free_discipline(card);
5654 qeth_core_free_card(card);
5660 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5662 unsigned long flags;
5663 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5665 QETH_DBF_TEXT(SETUP, 2, "removedv");
5667 if (card->discipline) {
5668 card->discipline->remove(gdev);
5669 qeth_core_free_discipline(card);
5672 write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5673 list_del(&card->list);
5674 write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5675 qeth_core_free_card(card);
5676 dev_set_drvdata(&gdev->dev, NULL);
5677 put_device(&gdev->dev);
5681 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5683 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5687 if (!card->discipline) {
5688 if (card->info.type == QETH_CARD_TYPE_IQD)
5689 def_discipline = QETH_DISCIPLINE_LAYER3;
5691 def_discipline = QETH_DISCIPLINE_LAYER2;
5692 rc = qeth_core_load_discipline(card, def_discipline);
5695 rc = card->discipline->setup(card->gdev);
5697 qeth_core_free_discipline(card);
5701 rc = card->discipline->set_online(gdev);
5706 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5708 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5709 return card->discipline->set_offline(gdev);
5712 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5714 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5715 if (card->discipline && card->discipline->shutdown)
5716 card->discipline->shutdown(gdev);
5719 static int qeth_core_prepare(struct ccwgroup_device *gdev)
5721 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5722 if (card->discipline && card->discipline->prepare)
5723 return card->discipline->prepare(gdev);
5727 static void qeth_core_complete(struct ccwgroup_device *gdev)
5729 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5730 if (card->discipline && card->discipline->complete)
5731 card->discipline->complete(gdev);
5734 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5736 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5737 if (card->discipline && card->discipline->freeze)
5738 return card->discipline->freeze(gdev);
5742 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5744 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5745 if (card->discipline && card->discipline->thaw)
5746 return card->discipline->thaw(gdev);
5750 static int qeth_core_restore(struct ccwgroup_device *gdev)
5752 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5753 if (card->discipline && card->discipline->restore)
5754 return card->discipline->restore(gdev);
5758 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5760 .owner = THIS_MODULE,
5763 .setup = qeth_core_probe_device,
5764 .remove = qeth_core_remove_device,
5765 .set_online = qeth_core_set_online,
5766 .set_offline = qeth_core_set_offline,
5767 .shutdown = qeth_core_shutdown,
5768 .prepare = qeth_core_prepare,
5769 .complete = qeth_core_complete,
5770 .freeze = qeth_core_freeze,
5771 .thaw = qeth_core_thaw,
5772 .restore = qeth_core_restore,
5775 static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
5776 const char *buf, size_t count)
5780 err = ccwgroup_create_dev(qeth_core_root_dev,
5781 &qeth_core_ccwgroup_driver, 3, buf);
5783 return err ? err : count;
5785 static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
5787 static struct attribute *qeth_drv_attrs[] = {
5788 &driver_attr_group.attr,
5791 static struct attribute_group qeth_drv_attr_group = {
5792 .attrs = qeth_drv_attrs,
5794 static const struct attribute_group *qeth_drv_attr_groups[] = {
5795 &qeth_drv_attr_group,
5800 const char str[ETH_GSTRING_LEN];
5801 } qeth_ethtool_stats_keys[] = {
5806 {"tx skbs no packing"},
5807 {"tx buffers no packing"},
5808 {"tx skbs packing"},
5809 {"tx buffers packing"},
5812 /* 10 */{"rx sg skbs"},
5814 {"rx sg page allocs"},
5815 {"tx large kbytes"},
5817 {"tx pk state ch n->p"},
5818 {"tx pk state ch p->n"},
5819 {"tx pk watermark low"},
5820 {"tx pk watermark high"},
5821 {"queue 0 buffer usage"},
5822 /* 20 */{"queue 1 buffer usage"},
5823 {"queue 2 buffer usage"},
5824 {"queue 3 buffer usage"},
5827 {"rx do_QDIO time"},
5828 {"rx do_QDIO count"},
5829 {"tx handler time"},
5830 {"tx handler count"},
5832 /* 30 */{"tx count"},
5833 {"tx do_QDIO time"},
5834 {"tx do_QDIO count"},
5838 {"cq handler count"},
5842 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
5844 switch (stringset) {
5846 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
5851 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
5853 void qeth_core_get_ethtool_stats(struct net_device *dev,
5854 struct ethtool_stats *stats, u64 *data)
5856 struct qeth_card *card = dev->ml_priv;
5857 data[0] = card->stats.rx_packets -
5858 card->perf_stats.initial_rx_packets;
5859 data[1] = card->perf_stats.bufs_rec;
5860 data[2] = card->stats.tx_packets -
5861 card->perf_stats.initial_tx_packets;
5862 data[3] = card->perf_stats.bufs_sent;
5863 data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
5864 - card->perf_stats.skbs_sent_pack;
5865 data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
5866 data[6] = card->perf_stats.skbs_sent_pack;
5867 data[7] = card->perf_stats.bufs_sent_pack;
5868 data[8] = card->perf_stats.sg_skbs_sent;
5869 data[9] = card->perf_stats.sg_frags_sent;
5870 data[10] = card->perf_stats.sg_skbs_rx;
5871 data[11] = card->perf_stats.sg_frags_rx;
5872 data[12] = card->perf_stats.sg_alloc_page_rx;
5873 data[13] = (card->perf_stats.large_send_bytes >> 10);
5874 data[14] = card->perf_stats.large_send_cnt;
5875 data[15] = card->perf_stats.sc_dp_p;
5876 data[16] = card->perf_stats.sc_p_dp;
5877 data[17] = QETH_LOW_WATERMARK_PACK;
5878 data[18] = QETH_HIGH_WATERMARK_PACK;
5879 data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
5880 data[20] = (card->qdio.no_out_queues > 1) ?
5881 atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
5882 data[21] = (card->qdio.no_out_queues > 2) ?
5883 atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
5884 data[22] = (card->qdio.no_out_queues > 3) ?
5885 atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
5886 data[23] = card->perf_stats.inbound_time;
5887 data[24] = card->perf_stats.inbound_cnt;
5888 data[25] = card->perf_stats.inbound_do_qdio_time;
5889 data[26] = card->perf_stats.inbound_do_qdio_cnt;
5890 data[27] = card->perf_stats.outbound_handler_time;
5891 data[28] = card->perf_stats.outbound_handler_cnt;
5892 data[29] = card->perf_stats.outbound_time;
5893 data[30] = card->perf_stats.outbound_cnt;
5894 data[31] = card->perf_stats.outbound_do_qdio_time;
5895 data[32] = card->perf_stats.outbound_do_qdio_cnt;
5896 data[33] = card->perf_stats.tx_csum;
5897 data[34] = card->perf_stats.tx_lin;
5898 data[35] = card->perf_stats.tx_linfail;
5899 data[36] = card->perf_stats.cq_cnt;
5900 data[37] = card->perf_stats.cq_time;
5902 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
5904 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
5906 switch (stringset) {
5908 memcpy(data, &qeth_ethtool_stats_keys,
5909 sizeof(qeth_ethtool_stats_keys));
5916 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
5918 void qeth_core_get_drvinfo(struct net_device *dev,
5919 struct ethtool_drvinfo *info)
5921 struct qeth_card *card = dev->ml_priv;
5923 strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
5924 sizeof(info->driver));
5925 strlcpy(info->version, "1.0", sizeof(info->version));
5926 strlcpy(info->fw_version, card->info.mcl_level,
5927 sizeof(info->fw_version));
5928 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
5929 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
5931 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
5933 /* Helper function to fill 'advertizing' and 'supported' which are the same. */
5934 /* Autoneg and full-duplex are supported and advertized uncondionally. */
5935 /* Always advertize and support all speeds up to specified, and only one */
5936 /* specified port type. */
5937 static void qeth_set_ecmd_adv_sup(struct ethtool_cmd *ecmd,
5938 int maxspeed, int porttype)
5940 int port_sup, port_adv, spd_sup, spd_adv;
5944 port_sup = SUPPORTED_TP;
5945 port_adv = ADVERTISED_TP;
5948 port_sup = SUPPORTED_FIBRE;
5949 port_adv = ADVERTISED_FIBRE;
5952 port_sup = SUPPORTED_TP;
5953 port_adv = ADVERTISED_TP;
5957 /* "Fallthrough" case'es ordered from high to low result in setting */
5958 /* flags cumulatively, starting from the specified speed and down to */
5959 /* the lowest possible. */
5964 spd_sup |= SUPPORTED_10000baseT_Full;
5965 spd_adv |= ADVERTISED_10000baseT_Full;
5967 spd_sup |= SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full;
5968 spd_adv |= ADVERTISED_1000baseT_Half |
5969 ADVERTISED_1000baseT_Full;
5971 spd_sup |= SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full;
5972 spd_adv |= ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full;
5974 spd_sup |= SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5975 spd_adv |= ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5978 spd_sup = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full;
5979 spd_adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full;
5982 ecmd->advertising = ADVERTISED_Autoneg | port_adv | spd_adv;
5983 ecmd->supported = SUPPORTED_Autoneg | port_sup | spd_sup;
5986 int qeth_core_ethtool_get_settings(struct net_device *netdev,
5987 struct ethtool_cmd *ecmd)
5989 struct qeth_card *card = netdev->ml_priv;
5990 enum qeth_link_types link_type;
5991 struct carrier_info carrier_info;
5995 if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
5996 link_type = QETH_LINK_TYPE_10GBIT_ETH;
5998 link_type = card->info.link_type;
6000 ecmd->transceiver = XCVR_INTERNAL;
6001 ecmd->duplex = DUPLEX_FULL;
6002 ecmd->autoneg = AUTONEG_ENABLE;
6004 switch (link_type) {
6005 case QETH_LINK_TYPE_FAST_ETH:
6006 case QETH_LINK_TYPE_LANE_ETH100:
6007 qeth_set_ecmd_adv_sup(ecmd, SPEED_100, PORT_TP);
6009 ecmd->port = PORT_TP;
6012 case QETH_LINK_TYPE_GBIT_ETH:
6013 case QETH_LINK_TYPE_LANE_ETH1000:
6014 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6016 ecmd->port = PORT_FIBRE;
6019 case QETH_LINK_TYPE_10GBIT_ETH:
6020 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6021 speed = SPEED_10000;
6022 ecmd->port = PORT_FIBRE;
6026 qeth_set_ecmd_adv_sup(ecmd, SPEED_10, PORT_TP);
6028 ecmd->port = PORT_TP;
6030 ethtool_cmd_speed_set(ecmd, speed);
6032 /* Check if we can obtain more accurate information. */
6033 /* If QUERY_CARD_INFO command is not supported or fails, */
6034 /* just return the heuristics that was filled above. */
6035 if (!qeth_card_hw_is_reachable(card))
6037 rc = qeth_query_card_info(card, &carrier_info);
6038 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6040 if (rc) /* report error from the hardware operation */
6042 /* on success, fill in the information got from the hardware */
6045 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6046 carrier_info.card_type,
6047 carrier_info.port_mode,
6048 carrier_info.port_speed);
6050 /* Update attributes for which we've obtained more authoritative */
6051 /* information, leave the rest the way they where filled above. */
6052 switch (carrier_info.card_type) {
6053 case CARD_INFO_TYPE_1G_COPPER_A:
6054 case CARD_INFO_TYPE_1G_COPPER_B:
6055 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_TP);
6056 ecmd->port = PORT_TP;
6058 case CARD_INFO_TYPE_1G_FIBRE_A:
6059 case CARD_INFO_TYPE_1G_FIBRE_B:
6060 qeth_set_ecmd_adv_sup(ecmd, SPEED_1000, PORT_FIBRE);
6061 ecmd->port = PORT_FIBRE;
6063 case CARD_INFO_TYPE_10G_FIBRE_A:
6064 case CARD_INFO_TYPE_10G_FIBRE_B:
6065 qeth_set_ecmd_adv_sup(ecmd, SPEED_10000, PORT_FIBRE);
6066 ecmd->port = PORT_FIBRE;
6070 switch (carrier_info.port_mode) {
6071 case CARD_INFO_PORTM_FULLDUPLEX:
6072 ecmd->duplex = DUPLEX_FULL;
6074 case CARD_INFO_PORTM_HALFDUPLEX:
6075 ecmd->duplex = DUPLEX_HALF;
6079 switch (carrier_info.port_speed) {
6080 case CARD_INFO_PORTS_10M:
6083 case CARD_INFO_PORTS_100M:
6086 case CARD_INFO_PORTS_1G:
6089 case CARD_INFO_PORTS_10G:
6090 speed = SPEED_10000;
6093 ethtool_cmd_speed_set(ecmd, speed);
6097 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);
6099 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6104 rc = qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_START, 0);
6106 dev_warn(&card->gdev->dev,
6107 "Starting HW checksumming for %s failed, using SW checksumming\n",
6108 QETH_CARD_IFNAME(card));
6111 rxtx_arg = (cstype == IPA_OUTBOUND_CHECKSUM) ? card->info.tx_csum_mask
6112 : card->info.csum_mask;
6113 rc = qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_ENABLE,
6116 dev_warn(&card->gdev->dev,
6117 "Enabling HW checksumming for %s failed, using SW checksumming\n",
6118 QETH_CARD_IFNAME(card));
6122 dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6123 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6127 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6132 rc = qeth_send_checksum_on(card, cstype);
6136 rc = qeth_send_simple_setassparms(card, cstype,
6137 IPA_CMD_ASS_STOP, 0);
6144 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6148 QETH_CARD_TEXT(card, 3, "sttso");
6151 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6152 IPA_CMD_ASS_START, 0);
6154 dev_warn(&card->gdev->dev,
6155 "Starting outbound TCP segmentation offload for %s failed\n",
6156 QETH_CARD_IFNAME(card));
6159 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6161 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6162 IPA_CMD_ASS_STOP, 0);
6167 /* try to restore device features on a device after recovery */
6168 int qeth_recover_features(struct net_device *dev)
6170 struct qeth_card *card = dev->ml_priv;
6171 netdev_features_t recover = dev->features;
6173 if (recover & NETIF_F_IP_CSUM) {
6174 if (qeth_set_ipa_csum(card, 1, IPA_OUTBOUND_CHECKSUM))
6175 recover ^= NETIF_F_IP_CSUM;
6177 if (recover & NETIF_F_RXCSUM) {
6178 if (qeth_set_ipa_csum(card, 1, IPA_INBOUND_CHECKSUM))
6179 recover ^= NETIF_F_RXCSUM;
6181 if (recover & NETIF_F_TSO) {
6182 if (qeth_set_ipa_tso(card, 1))
6183 recover ^= NETIF_F_TSO;
6186 if (recover == dev->features)
6189 dev_warn(&card->gdev->dev,
6190 "Device recovery failed to restore all offload features\n");
6191 dev->features = recover;
6194 EXPORT_SYMBOL_GPL(qeth_recover_features);
6196 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6198 struct qeth_card *card = dev->ml_priv;
6199 netdev_features_t changed = dev->features ^ features;
6202 QETH_DBF_TEXT(SETUP, 2, "setfeat");
6203 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6205 if ((changed & NETIF_F_IP_CSUM)) {
6206 rc = qeth_set_ipa_csum(card,
6207 features & NETIF_F_IP_CSUM ? 1 : 0,
6208 IPA_OUTBOUND_CHECKSUM);
6210 changed ^= NETIF_F_IP_CSUM;
6212 if ((changed & NETIF_F_RXCSUM)) {
6213 rc = qeth_set_ipa_csum(card,
6214 features & NETIF_F_RXCSUM ? 1 : 0,
6215 IPA_INBOUND_CHECKSUM);
6217 changed ^= NETIF_F_RXCSUM;
6219 if ((changed & NETIF_F_TSO)) {
6220 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6222 changed ^= NETIF_F_TSO;
6225 /* everything changed successfully? */
6226 if ((dev->features ^ features) == changed)
6228 /* something went wrong. save changed features and return error */
6229 dev->features ^= changed;
6232 EXPORT_SYMBOL_GPL(qeth_set_features);
6234 netdev_features_t qeth_fix_features(struct net_device *dev,
6235 netdev_features_t features)
6237 struct qeth_card *card = dev->ml_priv;
6239 QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6240 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6241 features &= ~NETIF_F_IP_CSUM;
6242 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6243 features &= ~NETIF_F_RXCSUM;
6244 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
6245 features &= ~NETIF_F_TSO;
6246 dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n",
6247 QETH_CARD_IFNAME(card));
6249 /* if the card isn't up, remove features that require hw changes */
6250 if (card->state == CARD_STATE_DOWN ||
6251 card->state == CARD_STATE_RECOVER)
6252 features = features & ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
6254 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6257 EXPORT_SYMBOL_GPL(qeth_fix_features);
6259 netdev_features_t qeth_features_check(struct sk_buff *skb,
6260 struct net_device *dev,
6261 netdev_features_t features)
6263 /* GSO segmentation builds skbs with
6264 * a (small) linear part for the headers, and
6265 * page frags for the data.
6266 * Compared to a linear skb, the header-only part consumes an
6267 * additional buffer element. This reduces buffer utilization, and
6268 * hurts throughput. So compress small segments into one element.
6270 if (netif_needs_gso(skb, features)) {
6271 /* match skb_segment(): */
6272 unsigned int doffset = skb->data - skb_mac_header(skb);
6273 unsigned int hsize = skb_shinfo(skb)->gso_size;
6274 unsigned int hroom = skb_headroom(skb);
6276 /* linearize only if resulting skb allocations are order-0: */
6277 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6278 features &= ~NETIF_F_SG;
6281 return vlan_features_check(skb, features);
6283 EXPORT_SYMBOL_GPL(qeth_features_check);
6285 static int __init qeth_core_init(void)
6289 pr_info("loading core functions\n");
6290 INIT_LIST_HEAD(&qeth_core_card_list.list);
6291 INIT_LIST_HEAD(&qeth_dbf_list);
6292 rwlock_init(&qeth_core_card_list.rwlock);
6293 mutex_init(&qeth_mod_mutex);
6295 qeth_wq = create_singlethread_workqueue("qeth_wq");
6297 rc = qeth_register_dbf_views();
6300 qeth_core_root_dev = root_device_register("qeth");
6301 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6304 qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6305 sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6306 if (!qeth_core_header_cache) {
6310 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6311 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6312 if (!qeth_qdio_outbuf_cache) {
6316 rc = ccw_driver_register(&qeth_ccw_driver);
6319 qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6320 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6327 ccw_driver_unregister(&qeth_ccw_driver);
6329 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6331 kmem_cache_destroy(qeth_core_header_cache);
6333 root_device_unregister(qeth_core_root_dev);
6335 qeth_unregister_dbf_views();
6337 pr_err("Initializing the qeth device driver failed\n");
6341 static void __exit qeth_core_exit(void)
6343 qeth_clear_dbf_list();
6344 destroy_workqueue(qeth_wq);
6345 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6346 ccw_driver_unregister(&qeth_ccw_driver);
6347 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6348 kmem_cache_destroy(qeth_core_header_cache);
6349 root_device_unregister(qeth_core_root_dev);
6350 qeth_unregister_dbf_views();
6351 pr_info("core functions removed\n");
6354 module_init(qeth_core_init);
6355 module_exit(qeth_core_exit);
6356 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6357 MODULE_DESCRIPTION("qeth core functions");
6358 MODULE_LICENSE("GPL");