1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright IBM Corp. 2007, 2009
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13 #include <linux/compat.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/log2.h>
21 #include <linux/tcp.h>
22 #include <linux/mii.h>
24 #include <linux/kthread.h>
25 #include <linux/slab.h>
26 #include <linux/if_vlan.h>
27 #include <linux/netdevice.h>
28 #include <linux/netdev_features.h>
29 #include <linux/skbuff.h>
30 #include <linux/vmalloc.h>
32 #include <net/iucv/af_iucv.h>
33 #include <net/dsfield.h>
35 #include <asm/ebcdic.h>
36 #include <asm/chpid.h>
38 #include <asm/sysinfo.h>
41 #include <asm/ccwdev.h>
42 #include <asm/cpcmd.h>
44 #include "qeth_core.h"
46 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
47 /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
49 [QETH_DBF_SETUP] = {"qeth_setup",
50 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
51 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
52 &debug_sprintf_view, NULL},
53 [QETH_DBF_CTRL] = {"qeth_control",
54 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
56 EXPORT_SYMBOL_GPL(qeth_dbf);
58 struct kmem_cache *qeth_core_header_cache;
59 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
60 static struct kmem_cache *qeth_qdio_outbuf_cache;
62 static struct device *qeth_core_root_dev;
63 static struct lock_class_key qdio_out_skb_queue_key;
65 static void qeth_issue_next_read_cb(struct qeth_card *card,
66 struct qeth_cmd_buffer *iob);
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_queues(struct qeth_card *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 int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
76 static void qeth_close_dev_handler(struct work_struct *work)
78 struct qeth_card *card;
80 card = container_of(work, struct qeth_card, close_dev_work);
81 QETH_CARD_TEXT(card, 2, "cldevhdl");
82 ccwgroup_set_offline(card->gdev);
85 static const char *qeth_get_cardname(struct qeth_card *card)
87 if (IS_VM_NIC(card)) {
88 switch (card->info.type) {
89 case QETH_CARD_TYPE_OSD:
90 return " Virtual NIC QDIO";
91 case QETH_CARD_TYPE_IQD:
92 return " Virtual NIC Hiper";
93 case QETH_CARD_TYPE_OSM:
94 return " Virtual NIC QDIO - OSM";
95 case QETH_CARD_TYPE_OSX:
96 return " Virtual NIC QDIO - OSX";
101 switch (card->info.type) {
102 case QETH_CARD_TYPE_OSD:
103 return " OSD Express";
104 case QETH_CARD_TYPE_IQD:
105 return " HiperSockets";
106 case QETH_CARD_TYPE_OSN:
108 case QETH_CARD_TYPE_OSM:
110 case QETH_CARD_TYPE_OSX:
119 /* max length to be returned: 14 */
120 const char *qeth_get_cardname_short(struct qeth_card *card)
122 if (IS_VM_NIC(card)) {
123 switch (card->info.type) {
124 case QETH_CARD_TYPE_OSD:
125 return "Virt.NIC QDIO";
126 case QETH_CARD_TYPE_IQD:
127 return "Virt.NIC Hiper";
128 case QETH_CARD_TYPE_OSM:
129 return "Virt.NIC OSM";
130 case QETH_CARD_TYPE_OSX:
131 return "Virt.NIC OSX";
136 switch (card->info.type) {
137 case QETH_CARD_TYPE_OSD:
138 switch (card->info.link_type) {
139 case QETH_LINK_TYPE_FAST_ETH:
141 case QETH_LINK_TYPE_HSTR:
143 case QETH_LINK_TYPE_GBIT_ETH:
145 case QETH_LINK_TYPE_10GBIT_ETH:
147 case QETH_LINK_TYPE_25GBIT_ETH:
149 case QETH_LINK_TYPE_LANE_ETH100:
150 return "OSD_FE_LANE";
151 case QETH_LINK_TYPE_LANE_TR:
152 return "OSD_TR_LANE";
153 case QETH_LINK_TYPE_LANE_ETH1000:
154 return "OSD_GbE_LANE";
155 case QETH_LINK_TYPE_LANE:
156 return "OSD_ATM_LANE";
158 return "OSD_Express";
160 case QETH_CARD_TYPE_IQD:
161 return "HiperSockets";
162 case QETH_CARD_TYPE_OSN:
164 case QETH_CARD_TYPE_OSM:
166 case QETH_CARD_TYPE_OSX:
175 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
176 int clear_start_mask)
180 spin_lock_irqsave(&card->thread_mask_lock, flags);
181 card->thread_allowed_mask = threads;
182 if (clear_start_mask)
183 card->thread_start_mask &= threads;
184 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
185 wake_up(&card->wait_q);
187 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
189 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
194 spin_lock_irqsave(&card->thread_mask_lock, flags);
195 rc = (card->thread_running_mask & threads);
196 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
199 EXPORT_SYMBOL_GPL(qeth_threads_running);
201 void qeth_clear_working_pool_list(struct qeth_card *card)
203 struct qeth_buffer_pool_entry *pool_entry, *tmp;
205 QETH_CARD_TEXT(card, 5, "clwrklst");
206 list_for_each_entry_safe(pool_entry, tmp,
207 &card->qdio.in_buf_pool.entry_list, list){
208 list_del(&pool_entry->list);
211 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
213 static int qeth_alloc_buffer_pool(struct qeth_card *card)
215 struct qeth_buffer_pool_entry *pool_entry;
219 QETH_CARD_TEXT(card, 5, "alocpool");
220 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
221 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
223 qeth_free_buffer_pool(card);
226 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
227 ptr = (void *) __get_free_page(GFP_KERNEL);
230 free_page((unsigned long)
231 pool_entry->elements[--j]);
233 qeth_free_buffer_pool(card);
236 pool_entry->elements[j] = ptr;
238 list_add(&pool_entry->init_list,
239 &card->qdio.init_pool.entry_list);
244 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
246 QETH_CARD_TEXT(card, 2, "realcbp");
248 if (card->state != CARD_STATE_DOWN)
251 /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
252 qeth_clear_working_pool_list(card);
253 qeth_free_buffer_pool(card);
254 card->qdio.in_buf_pool.buf_count = bufcnt;
255 card->qdio.init_pool.buf_count = bufcnt;
256 return qeth_alloc_buffer_pool(card);
258 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
260 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
265 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
269 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
271 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
277 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
282 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
283 q->bufs[i].buffer = q->qdio_bufs[i];
285 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
289 static int qeth_cq_init(struct qeth_card *card)
293 if (card->options.cq == QETH_CQ_ENABLED) {
294 QETH_CARD_TEXT(card, 2, "cqinit");
295 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
296 QDIO_MAX_BUFFERS_PER_Q);
297 card->qdio.c_q->next_buf_to_init = 127;
298 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
299 card->qdio.no_in_queues - 1, 0,
302 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
311 static int qeth_alloc_cq(struct qeth_card *card)
315 if (card->options.cq == QETH_CQ_ENABLED) {
317 struct qdio_outbuf_state *outbuf_states;
319 QETH_CARD_TEXT(card, 2, "cqon");
320 card->qdio.c_q = qeth_alloc_qdio_queue();
321 if (!card->qdio.c_q) {
325 card->qdio.no_in_queues = 2;
326 card->qdio.out_bufstates =
327 kcalloc(card->qdio.no_out_queues *
328 QDIO_MAX_BUFFERS_PER_Q,
329 sizeof(struct qdio_outbuf_state),
331 outbuf_states = card->qdio.out_bufstates;
332 if (outbuf_states == NULL) {
336 for (i = 0; i < card->qdio.no_out_queues; ++i) {
337 card->qdio.out_qs[i]->bufstates = outbuf_states;
338 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
341 QETH_CARD_TEXT(card, 2, "nocq");
342 card->qdio.c_q = NULL;
343 card->qdio.no_in_queues = 1;
345 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
350 qeth_free_qdio_queue(card->qdio.c_q);
351 card->qdio.c_q = NULL;
353 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
357 static void qeth_free_cq(struct qeth_card *card)
359 if (card->qdio.c_q) {
360 --card->qdio.no_in_queues;
361 qeth_free_qdio_queue(card->qdio.c_q);
362 card->qdio.c_q = NULL;
364 kfree(card->qdio.out_bufstates);
365 card->qdio.out_bufstates = NULL;
368 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
371 enum iucv_tx_notify n;
375 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
381 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
382 TX_NOTIFY_UNREACHABLE;
385 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
386 TX_NOTIFY_GENERALERROR;
393 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
396 if (q->card->options.cq != QETH_CQ_ENABLED)
399 if (q->bufs[bidx]->next_pending != NULL) {
400 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
401 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
404 if (forced_cleanup ||
405 atomic_read(&c->state) ==
406 QETH_QDIO_BUF_HANDLED_DELAYED) {
407 struct qeth_qdio_out_buffer *f = c;
408 QETH_CARD_TEXT(f->q->card, 5, "fp");
409 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
410 /* release here to avoid interleaving between
411 outbound tasklet and inbound tasklet
412 regarding notifications and lifecycle */
413 qeth_release_skbs(c);
416 WARN_ON_ONCE(head->next_pending != f);
417 head->next_pending = c;
418 kmem_cache_free(qeth_qdio_outbuf_cache, f);
426 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
427 QETH_QDIO_BUF_HANDLED_DELAYED)) {
428 /* for recovery situations */
429 qeth_init_qdio_out_buf(q, bidx);
430 QETH_CARD_TEXT(q->card, 2, "clprecov");
435 static void qeth_qdio_handle_aob(struct qeth_card *card,
436 unsigned long phys_aob_addr)
439 struct qeth_qdio_out_buffer *buffer;
440 enum iucv_tx_notify notification;
443 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
444 QETH_CARD_TEXT(card, 5, "haob");
445 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
446 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
447 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
449 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
450 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
451 notification = TX_NOTIFY_OK;
453 WARN_ON_ONCE(atomic_read(&buffer->state) !=
454 QETH_QDIO_BUF_PENDING);
455 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
456 notification = TX_NOTIFY_DELAYED_OK;
459 if (aob->aorc != 0) {
460 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
461 notification = qeth_compute_cq_notification(aob->aorc, 1);
463 qeth_notify_skbs(buffer->q, buffer, notification);
465 /* Free dangling allocations. The attached skbs are handled by
466 * qeth_cleanup_handled_pending().
469 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
471 if (aob->sba[i] && buffer->is_header[i])
472 kmem_cache_free(qeth_core_header_cache,
473 (void *) aob->sba[i]);
475 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
477 qdio_release_aob(aob);
480 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
482 return card->options.cq == QETH_CQ_ENABLED &&
483 card->qdio.c_q != NULL &&
485 queue == card->qdio.no_in_queues - 1;
488 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
491 ccw->cmd_code = cmd_code;
492 ccw->flags = flags | CCW_FLAG_SLI;
494 ccw->cda = (__u32) __pa(data);
497 static int __qeth_issue_next_read(struct qeth_card *card)
499 struct qeth_cmd_buffer *iob = card->read_cmd;
500 struct qeth_channel *channel = iob->channel;
501 struct ccw1 *ccw = __ccw_from_cmd(iob);
504 QETH_CARD_TEXT(card, 5, "issnxrd");
505 if (channel->state != CH_STATE_UP)
508 memset(iob->data, 0, iob->length);
509 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
510 iob->callback = qeth_issue_next_read_cb;
511 /* keep the cmd alive after completion: */
514 QETH_CARD_TEXT(card, 6, "noirqpnd");
515 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
517 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
518 rc, CARD_DEVID(card));
519 atomic_set(&channel->irq_pending, 0);
521 card->read_or_write_problem = 1;
522 qeth_schedule_recovery(card);
523 wake_up(&card->wait_q);
528 static int qeth_issue_next_read(struct qeth_card *card)
532 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
533 ret = __qeth_issue_next_read(card);
534 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
539 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
541 struct qeth_reply *reply;
543 reply = kzalloc(sizeof(*reply), GFP_KERNEL);
545 refcount_set(&reply->refcnt, 1);
546 init_completion(&reply->received);
551 static void qeth_get_reply(struct qeth_reply *reply)
553 refcount_inc(&reply->refcnt);
556 static void qeth_put_reply(struct qeth_reply *reply)
558 if (refcount_dec_and_test(&reply->refcnt))
562 static void qeth_enqueue_reply(struct qeth_card *card, struct qeth_reply *reply)
564 spin_lock_irq(&card->lock);
565 list_add_tail(&reply->list, &card->cmd_waiter_list);
566 spin_unlock_irq(&card->lock);
569 static void qeth_dequeue_reply(struct qeth_card *card, struct qeth_reply *reply)
571 spin_lock_irq(&card->lock);
572 list_del(&reply->list);
573 spin_unlock_irq(&card->lock);
576 void qeth_notify_reply(struct qeth_reply *reply, int reason)
579 complete(&reply->received);
581 EXPORT_SYMBOL_GPL(qeth_notify_reply);
583 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
584 struct qeth_card *card)
586 const char *ipa_name;
587 int com = cmd->hdr.command;
588 ipa_name = qeth_get_ipa_cmd_name(com);
591 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
592 ipa_name, com, CARD_DEVID(card), rc,
593 qeth_get_ipa_msg(rc));
595 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
596 ipa_name, com, CARD_DEVID(card));
599 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
600 struct qeth_ipa_cmd *cmd)
602 QETH_CARD_TEXT(card, 5, "chkipad");
604 if (IS_IPA_REPLY(cmd)) {
605 if (cmd->hdr.command != IPA_CMD_SETCCID &&
606 cmd->hdr.command != IPA_CMD_DELCCID &&
607 cmd->hdr.command != IPA_CMD_MODCCID &&
608 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
609 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
613 /* handle unsolicited event: */
614 switch (cmd->hdr.command) {
615 case IPA_CMD_STOPLAN:
616 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
617 dev_err(&card->gdev->dev,
618 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
619 QETH_CARD_IFNAME(card));
620 schedule_work(&card->close_dev_work);
622 dev_warn(&card->gdev->dev,
623 "The link for interface %s on CHPID 0x%X failed\n",
624 QETH_CARD_IFNAME(card), card->info.chpid);
625 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
626 netif_carrier_off(card->dev);
629 case IPA_CMD_STARTLAN:
630 dev_info(&card->gdev->dev,
631 "The link for %s on CHPID 0x%X has been restored\n",
632 QETH_CARD_IFNAME(card), card->info.chpid);
633 if (card->info.hwtrap)
634 card->info.hwtrap = 2;
635 qeth_schedule_recovery(card);
637 case IPA_CMD_SETBRIDGEPORT_IQD:
638 case IPA_CMD_SETBRIDGEPORT_OSA:
639 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
640 if (card->discipline->control_event_handler(card, cmd))
643 case IPA_CMD_MODCCID:
645 case IPA_CMD_REGISTER_LOCAL_ADDR:
646 QETH_CARD_TEXT(card, 3, "irla");
648 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
649 QETH_CARD_TEXT(card, 3, "urla");
652 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
657 void qeth_clear_ipacmd_list(struct qeth_card *card)
659 struct qeth_reply *reply;
662 QETH_CARD_TEXT(card, 4, "clipalst");
664 spin_lock_irqsave(&card->lock, flags);
665 list_for_each_entry(reply, &card->cmd_waiter_list, list)
666 qeth_notify_reply(reply, -EIO);
667 spin_unlock_irqrestore(&card->lock, flags);
669 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
671 static int qeth_check_idx_response(struct qeth_card *card,
672 unsigned char *buffer)
674 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
675 if ((buffer[2] & 0xc0) == 0xc0) {
676 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
678 QETH_CARD_TEXT(card, 2, "ckidxres");
679 QETH_CARD_TEXT(card, 2, " idxterm");
680 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
681 if (buffer[4] == 0xf6) {
682 dev_err(&card->gdev->dev,
683 "The qeth device is not configured "
684 "for the OSI layer required by z/VM\n");
692 void qeth_put_cmd(struct qeth_cmd_buffer *iob)
694 if (refcount_dec_and_test(&iob->ref_count)) {
696 qeth_put_reply(iob->reply);
701 EXPORT_SYMBOL_GPL(qeth_put_cmd);
703 static void qeth_release_buffer_cb(struct qeth_card *card,
704 struct qeth_cmd_buffer *iob)
709 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
711 struct qeth_reply *reply = iob->reply;
714 qeth_notify_reply(reply, rc);
718 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
719 unsigned int length, unsigned int ccws,
722 struct qeth_cmd_buffer *iob;
724 if (length > QETH_BUFSIZE)
727 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
731 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
732 GFP_KERNEL | GFP_DMA);
738 refcount_set(&iob->ref_count, 1);
739 iob->channel = channel;
740 iob->timeout = timeout;
741 iob->length = length;
744 EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
746 static void qeth_issue_next_read_cb(struct qeth_card *card,
747 struct qeth_cmd_buffer *iob)
749 struct qeth_ipa_cmd *cmd = NULL;
750 struct qeth_reply *reply = NULL;
751 struct qeth_reply *r;
755 QETH_CARD_TEXT(card, 4, "sndctlcb");
756 rc = qeth_check_idx_response(card, iob->data);
761 qeth_clear_ipacmd_list(card);
762 qeth_schedule_recovery(card);
768 if (IS_IPA(iob->data)) {
769 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
770 cmd = qeth_check_ipa_data(card, cmd);
773 if (IS_OSN(card) && card->osn_info.assist_cb &&
774 cmd->hdr.command != IPA_CMD_STARTLAN) {
775 card->osn_info.assist_cb(card->dev, cmd);
779 /* non-IPA commands should only flow during initialization */
780 if (card->state != CARD_STATE_DOWN)
784 /* match against pending cmd requests */
785 spin_lock_irqsave(&card->lock, flags);
786 list_for_each_entry(r, &card->cmd_waiter_list, list) {
787 if ((r->seqno == QETH_IDX_COMMAND_SEQNO) ||
788 (cmd && (r->seqno == cmd->hdr.seqno))) {
790 /* take the object outside the lock */
791 qeth_get_reply(reply);
795 spin_unlock_irqrestore(&card->lock, flags);
800 if (!reply->callback) {
804 reply->offset = (u16)((char *)cmd - (char *)iob->data);
805 rc = reply->callback(card, reply, (unsigned long)cmd);
807 rc = reply->callback(card, reply, (unsigned long)iob);
812 qeth_notify_reply(reply, rc);
813 qeth_put_reply(reply);
816 memcpy(&card->seqno.pdu_hdr_ack,
817 QETH_PDU_HEADER_SEQ_NO(iob->data),
820 __qeth_issue_next_read(card);
823 static int qeth_set_thread_start_bit(struct qeth_card *card,
824 unsigned long thread)
828 spin_lock_irqsave(&card->thread_mask_lock, flags);
829 if (!(card->thread_allowed_mask & thread) ||
830 (card->thread_start_mask & thread)) {
831 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
834 card->thread_start_mask |= thread;
835 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
839 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
843 spin_lock_irqsave(&card->thread_mask_lock, flags);
844 card->thread_start_mask &= ~thread;
845 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
846 wake_up(&card->wait_q);
848 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
850 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
854 spin_lock_irqsave(&card->thread_mask_lock, flags);
855 card->thread_running_mask &= ~thread;
856 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
857 wake_up_all(&card->wait_q);
859 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
861 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
866 spin_lock_irqsave(&card->thread_mask_lock, flags);
867 if (card->thread_start_mask & thread) {
868 if ((card->thread_allowed_mask & thread) &&
869 !(card->thread_running_mask & thread)) {
871 card->thread_start_mask &= ~thread;
872 card->thread_running_mask |= thread;
876 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
880 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
884 wait_event(card->wait_q,
885 (rc = __qeth_do_run_thread(card, thread)) >= 0);
888 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
890 void qeth_schedule_recovery(struct qeth_card *card)
892 QETH_CARD_TEXT(card, 2, "startrec");
893 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
894 schedule_work(&card->kernel_thread_starter);
896 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
898 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
904 sense = (char *) irb->ecw;
905 cstat = irb->scsw.cmd.cstat;
906 dstat = irb->scsw.cmd.dstat;
908 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
909 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
910 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
911 QETH_CARD_TEXT(card, 2, "CGENCHK");
912 dev_warn(&cdev->dev, "The qeth device driver "
913 "failed to recover an error on the device\n");
914 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
915 CCW_DEVID(cdev), dstat, cstat);
916 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
921 if (dstat & DEV_STAT_UNIT_CHECK) {
922 if (sense[SENSE_RESETTING_EVENT_BYTE] &
923 SENSE_RESETTING_EVENT_FLAG) {
924 QETH_CARD_TEXT(card, 2, "REVIND");
927 if (sense[SENSE_COMMAND_REJECT_BYTE] &
928 SENSE_COMMAND_REJECT_FLAG) {
929 QETH_CARD_TEXT(card, 2, "CMDREJi");
932 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
933 QETH_CARD_TEXT(card, 2, "AFFE");
936 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
937 QETH_CARD_TEXT(card, 2, "ZEROSEN");
940 QETH_CARD_TEXT(card, 2, "DGENCHK");
946 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
952 switch (PTR_ERR(irb)) {
954 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
956 QETH_CARD_TEXT(card, 2, "ckirberr");
957 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
960 dev_warn(&cdev->dev, "A hardware operation timed out"
962 QETH_CARD_TEXT(card, 2, "ckirberr");
963 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
966 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
967 PTR_ERR(irb), CCW_DEVID(cdev));
968 QETH_CARD_TEXT(card, 2, "ckirberr");
969 QETH_CARD_TEXT(card, 2, " rc???");
974 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
979 struct qeth_cmd_buffer *iob = NULL;
980 struct ccwgroup_device *gdev;
981 struct qeth_channel *channel;
982 struct qeth_card *card;
984 /* while we hold the ccwdev lock, this stays valid: */
985 gdev = dev_get_drvdata(&cdev->dev);
986 card = dev_get_drvdata(&gdev->dev);
990 QETH_CARD_TEXT(card, 5, "irq");
992 if (card->read.ccwdev == cdev) {
993 channel = &card->read;
994 QETH_CARD_TEXT(card, 5, "read");
995 } else if (card->write.ccwdev == cdev) {
996 channel = &card->write;
997 QETH_CARD_TEXT(card, 5, "write");
999 channel = &card->data;
1000 QETH_CARD_TEXT(card, 5, "data");
1003 if (qeth_intparm_is_iob(intparm))
1004 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1006 rc = qeth_check_irb_error(card, cdev, irb);
1008 /* IO was terminated, free its resources. */
1010 qeth_cancel_cmd(iob, rc);
1011 atomic_set(&channel->irq_pending, 0);
1012 wake_up(&card->wait_q);
1016 atomic_set(&channel->irq_pending, 0);
1018 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1019 channel->state = CH_STATE_STOPPED;
1021 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1022 channel->state = CH_STATE_HALTED;
1024 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1025 QETH_CARD_TEXT(card, 6, "clrchpar");
1026 /* we don't have to handle this further */
1029 if (intparm == QETH_HALT_CHANNEL_PARM) {
1030 QETH_CARD_TEXT(card, 6, "hltchpar");
1031 /* we don't have to handle this further */
1035 cstat = irb->scsw.cmd.cstat;
1036 dstat = irb->scsw.cmd.dstat;
1038 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1039 (dstat & DEV_STAT_UNIT_CHECK) ||
1041 if (irb->esw.esw0.erw.cons) {
1042 dev_warn(&channel->ccwdev->dev,
1043 "The qeth device driver failed to recover "
1044 "an error on the device\n");
1045 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1046 CCW_DEVID(channel->ccwdev), cstat,
1048 print_hex_dump(KERN_WARNING, "qeth: irb ",
1049 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1050 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1051 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1054 rc = qeth_get_problem(card, cdev, irb);
1056 card->read_or_write_problem = 1;
1058 qeth_cancel_cmd(iob, rc);
1059 qeth_clear_ipacmd_list(card);
1060 qeth_schedule_recovery(card);
1065 if (iob && iob->callback)
1066 iob->callback(card, iob);
1069 wake_up(&card->wait_q);
1073 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1074 struct qeth_qdio_out_buffer *buf,
1075 enum iucv_tx_notify notification)
1077 struct sk_buff *skb;
1079 skb_queue_walk(&buf->skb_list, skb) {
1080 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1081 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1082 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1083 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1087 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1089 struct sk_buff *skb;
1091 /* release may never happen from within CQ tasklet scope */
1092 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1094 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1095 qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR);
1097 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL)
1101 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1102 struct qeth_qdio_out_buffer *buf)
1106 /* is PCI flag set on buffer? */
1107 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1108 atomic_dec(&queue->set_pci_flags_count);
1110 qeth_release_skbs(buf);
1112 for (i = 0; i < queue->max_elements; ++i) {
1113 if (buf->buffer->element[i].addr && buf->is_header[i])
1114 kmem_cache_free(qeth_core_header_cache,
1115 buf->buffer->element[i].addr);
1116 buf->is_header[i] = 0;
1119 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1120 buf->next_element_to_fill = 0;
1121 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1124 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1128 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1131 qeth_cleanup_handled_pending(q, j, 1);
1132 qeth_clear_output_buffer(q, q->bufs[j]);
1134 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1140 void qeth_drain_output_queues(struct qeth_card *card)
1144 QETH_CARD_TEXT(card, 2, "clearqdbf");
1145 /* clear outbound buffers to free skbs */
1146 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1147 if (card->qdio.out_qs[i])
1148 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1151 EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
1153 static void qeth_free_buffer_pool(struct qeth_card *card)
1155 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1157 list_for_each_entry_safe(pool_entry, tmp,
1158 &card->qdio.init_pool.entry_list, init_list){
1159 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1160 free_page((unsigned long)pool_entry->elements[i]);
1161 list_del(&pool_entry->init_list);
1166 static void qeth_clean_channel(struct qeth_channel *channel)
1168 struct ccw_device *cdev = channel->ccwdev;
1170 QETH_DBF_TEXT(SETUP, 2, "freech");
1172 spin_lock_irq(get_ccwdev_lock(cdev));
1173 cdev->handler = NULL;
1174 spin_unlock_irq(get_ccwdev_lock(cdev));
1177 static void qeth_setup_channel(struct qeth_channel *channel)
1179 struct ccw_device *cdev = channel->ccwdev;
1181 QETH_DBF_TEXT(SETUP, 2, "setupch");
1183 channel->state = CH_STATE_DOWN;
1184 atomic_set(&channel->irq_pending, 0);
1186 spin_lock_irq(get_ccwdev_lock(cdev));
1187 cdev->handler = qeth_irq;
1188 spin_unlock_irq(get_ccwdev_lock(cdev));
1191 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1193 unsigned int count = single ? 1 : card->dev->num_tx_queues;
1197 rc = netif_set_real_num_tx_queues(card->dev, count);
1203 if (card->qdio.no_out_queues == count)
1206 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1207 qeth_free_qdio_queues(card);
1210 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1212 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE;
1213 card->qdio.no_out_queues = count;
1217 static int qeth_update_from_chp_desc(struct qeth_card *card)
1219 struct ccw_device *ccwdev;
1220 struct channel_path_desc_fmt0 *chp_dsc;
1223 QETH_CARD_TEXT(card, 2, "chp_desc");
1225 ccwdev = card->data.ccwdev;
1226 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1230 card->info.func_level = 0x4100 + chp_dsc->desc;
1232 if (IS_OSD(card) || IS_OSX(card))
1233 /* CHPP field bit 6 == 1 -> single queue */
1234 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1237 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1238 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1242 static void qeth_init_qdio_info(struct qeth_card *card)
1244 QETH_CARD_TEXT(card, 4, "intqdinf");
1245 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1246 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1247 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1250 card->qdio.no_in_queues = 1;
1251 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1253 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1255 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1256 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1257 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1258 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1261 static void qeth_set_initial_options(struct qeth_card *card)
1263 card->options.route4.type = NO_ROUTER;
1264 card->options.route6.type = NO_ROUTER;
1265 card->options.rx_sg_cb = QETH_RX_SG_CB;
1266 card->options.isolation = ISOLATION_MODE_NONE;
1267 card->options.cq = QETH_CQ_DISABLED;
1268 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1271 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1273 unsigned long flags;
1276 spin_lock_irqsave(&card->thread_mask_lock, flags);
1277 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1278 (u8) card->thread_start_mask,
1279 (u8) card->thread_allowed_mask,
1280 (u8) card->thread_running_mask);
1281 rc = (card->thread_start_mask & thread);
1282 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1286 static void qeth_start_kernel_thread(struct work_struct *work)
1288 struct task_struct *ts;
1289 struct qeth_card *card = container_of(work, struct qeth_card,
1290 kernel_thread_starter);
1291 QETH_CARD_TEXT(card , 2, "strthrd");
1293 if (card->read.state != CH_STATE_UP &&
1294 card->write.state != CH_STATE_UP)
1296 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1297 ts = kthread_run(card->discipline->recover, (void *)card,
1300 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1301 qeth_clear_thread_running_bit(card,
1302 QETH_RECOVER_THREAD);
1307 static void qeth_buffer_reclaim_work(struct work_struct *);
1308 static void qeth_setup_card(struct qeth_card *card)
1310 QETH_CARD_TEXT(card, 2, "setupcrd");
1312 card->info.type = CARD_RDEV(card)->id.driver_info;
1313 card->state = CARD_STATE_DOWN;
1314 spin_lock_init(&card->lock);
1315 spin_lock_init(&card->thread_mask_lock);
1316 mutex_init(&card->conf_mutex);
1317 mutex_init(&card->discipline_mutex);
1318 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1319 INIT_LIST_HEAD(&card->cmd_waiter_list);
1320 init_waitqueue_head(&card->wait_q);
1321 qeth_set_initial_options(card);
1322 /* IP address takeover */
1323 INIT_LIST_HEAD(&card->ipato.entries);
1324 qeth_init_qdio_info(card);
1325 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1326 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1329 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1331 struct qeth_card *card = container_of(slr, struct qeth_card,
1332 qeth_service_level);
1333 if (card->info.mcl_level[0])
1334 seq_printf(m, "qeth: %s firmware level %s\n",
1335 CARD_BUS_ID(card), card->info.mcl_level);
1338 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1340 struct qeth_card *card;
1342 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1343 card = kzalloc(sizeof(*card), GFP_KERNEL);
1346 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1349 dev_set_drvdata(&gdev->dev, card);
1350 CARD_RDEV(card) = gdev->cdev[0];
1351 CARD_WDEV(card) = gdev->cdev[1];
1352 CARD_DDEV(card) = gdev->cdev[2];
1354 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1355 dev_name(&gdev->dev));
1356 if (!card->event_wq)
1359 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1360 if (!card->read_cmd)
1363 qeth_setup_channel(&card->read);
1364 qeth_setup_channel(&card->write);
1365 qeth_setup_channel(&card->data);
1366 card->qeth_service_level.seq_print = qeth_core_sl_print;
1367 register_service_level(&card->qeth_service_level);
1371 destroy_workqueue(card->event_wq);
1373 dev_set_drvdata(&gdev->dev, NULL);
1379 static int qeth_clear_channel(struct qeth_card *card,
1380 struct qeth_channel *channel)
1384 QETH_CARD_TEXT(card, 3, "clearch");
1385 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1386 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1387 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1391 rc = wait_event_interruptible_timeout(card->wait_q,
1392 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1393 if (rc == -ERESTARTSYS)
1395 if (channel->state != CH_STATE_STOPPED)
1397 channel->state = CH_STATE_DOWN;
1401 static int qeth_halt_channel(struct qeth_card *card,
1402 struct qeth_channel *channel)
1406 QETH_CARD_TEXT(card, 3, "haltch");
1407 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1408 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1409 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1413 rc = wait_event_interruptible_timeout(card->wait_q,
1414 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1415 if (rc == -ERESTARTSYS)
1417 if (channel->state != CH_STATE_HALTED)
1422 static int qeth_halt_channels(struct qeth_card *card)
1424 int rc1 = 0, rc2 = 0, rc3 = 0;
1426 QETH_CARD_TEXT(card, 3, "haltchs");
1427 rc1 = qeth_halt_channel(card, &card->read);
1428 rc2 = qeth_halt_channel(card, &card->write);
1429 rc3 = qeth_halt_channel(card, &card->data);
1437 static int qeth_clear_channels(struct qeth_card *card)
1439 int rc1 = 0, rc2 = 0, rc3 = 0;
1441 QETH_CARD_TEXT(card, 3, "clearchs");
1442 rc1 = qeth_clear_channel(card, &card->read);
1443 rc2 = qeth_clear_channel(card, &card->write);
1444 rc3 = qeth_clear_channel(card, &card->data);
1452 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1456 QETH_CARD_TEXT(card, 3, "clhacrd");
1459 rc = qeth_halt_channels(card);
1462 return qeth_clear_channels(card);
1465 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1469 QETH_CARD_TEXT(card, 3, "qdioclr");
1470 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1471 QETH_QDIO_CLEANING)) {
1472 case QETH_QDIO_ESTABLISHED:
1474 rc = qdio_shutdown(CARD_DDEV(card),
1475 QDIO_FLAG_CLEANUP_USING_HALT);
1477 rc = qdio_shutdown(CARD_DDEV(card),
1478 QDIO_FLAG_CLEANUP_USING_CLEAR);
1480 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1481 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1483 case QETH_QDIO_CLEANING:
1488 rc = qeth_clear_halt_card(card, use_halt);
1490 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1491 card->state = CARD_STATE_DOWN;
1494 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1496 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1498 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1499 struct diag26c_vnic_resp *response = NULL;
1500 struct diag26c_vnic_req *request = NULL;
1501 struct ccw_dev_id id;
1505 QETH_CARD_TEXT(card, 2, "vmlayer");
1507 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1511 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1512 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1513 if (!request || !response) {
1518 ccw_device_get_id(CARD_RDEV(card), &id);
1519 request->resp_buf_len = sizeof(*response);
1520 request->resp_version = DIAG26C_VERSION6_VM65918;
1521 request->req_format = DIAG26C_VNIC_INFO;
1523 memcpy(&request->sys_name, userid, 8);
1524 request->devno = id.devno;
1526 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1527 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1528 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1531 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1533 if (request->resp_buf_len < sizeof(*response) ||
1534 response->version != request->resp_version) {
1539 if (response->protocol == VNIC_INFO_PROT_L2)
1540 disc = QETH_DISCIPLINE_LAYER2;
1541 else if (response->protocol == VNIC_INFO_PROT_L3)
1542 disc = QETH_DISCIPLINE_LAYER3;
1548 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1552 /* Determine whether the device requires a specific layer discipline */
1553 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1555 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1557 if (IS_OSM(card) || IS_OSN(card))
1558 disc = QETH_DISCIPLINE_LAYER2;
1559 else if (IS_VM_NIC(card))
1560 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1561 qeth_vm_detect_layer(card);
1564 case QETH_DISCIPLINE_LAYER2:
1565 QETH_CARD_TEXT(card, 3, "force l2");
1567 case QETH_DISCIPLINE_LAYER3:
1568 QETH_CARD_TEXT(card, 3, "force l3");
1571 QETH_CARD_TEXT(card, 3, "force no");
1577 static void qeth_set_blkt_defaults(struct qeth_card *card)
1579 QETH_CARD_TEXT(card, 2, "cfgblkt");
1581 if (card->info.use_v1_blkt) {
1582 card->info.blkt.time_total = 0;
1583 card->info.blkt.inter_packet = 0;
1584 card->info.blkt.inter_packet_jumbo = 0;
1586 card->info.blkt.time_total = 250;
1587 card->info.blkt.inter_packet = 5;
1588 card->info.blkt.inter_packet_jumbo = 15;
1592 static void qeth_init_tokens(struct qeth_card *card)
1594 card->token.issuer_rm_w = 0x00010103UL;
1595 card->token.cm_filter_w = 0x00010108UL;
1596 card->token.cm_connection_w = 0x0001010aUL;
1597 card->token.ulp_filter_w = 0x0001010bUL;
1598 card->token.ulp_connection_w = 0x0001010dUL;
1601 static void qeth_init_func_level(struct qeth_card *card)
1603 switch (card->info.type) {
1604 case QETH_CARD_TYPE_IQD:
1605 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1607 case QETH_CARD_TYPE_OSD:
1608 case QETH_CARD_TYPE_OSN:
1609 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1616 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1617 struct qeth_cmd_buffer *iob)
1619 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1620 QETH_SEQ_NO_LENGTH);
1621 if (iob->channel == &card->write)
1622 card->seqno.trans_hdr++;
1625 static int qeth_peer_func_level(int level)
1627 if ((level & 0xff) == 8)
1628 return (level & 0xff) + 0x400;
1629 if (((level >> 8) & 3) == 1)
1630 return (level & 0xff) + 0x200;
1634 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1635 struct qeth_cmd_buffer *iob)
1637 qeth_idx_finalize_cmd(card, iob);
1639 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1640 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1641 card->seqno.pdu_hdr++;
1642 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1643 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1645 iob->reply->seqno = QETH_IDX_COMMAND_SEQNO;
1646 iob->callback = qeth_release_buffer_cb;
1649 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1651 unsigned int data_length)
1653 struct qeth_cmd_buffer *iob;
1655 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1659 memcpy(iob->data, data, data_length);
1660 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1662 iob->finalize = qeth_mpc_finalize_cmd;
1667 * qeth_send_control_data() - send control command to the card
1668 * @card: qeth_card structure pointer
1669 * @iob: qeth_cmd_buffer pointer
1670 * @reply_cb: callback function pointer
1671 * @cb_card: pointer to the qeth_card structure
1672 * @cb_reply: pointer to the qeth_reply structure
1673 * @cb_cmd: pointer to the original iob for non-IPA
1674 * commands, or to the qeth_ipa_cmd structure
1675 * for the IPA commands.
1676 * @reply_param: private pointer passed to the callback
1678 * Callback function gets called one or more times, with cb_cmd
1679 * pointing to the response returned by the hardware. Callback
1680 * function must return
1681 * > 0 if more reply blocks are expected,
1682 * 0 if the last or only reply block is received, and
1684 * Callback function can get the value of the reply_param pointer from the
1685 * field 'param' of the structure qeth_reply.
1688 static int qeth_send_control_data(struct qeth_card *card,
1689 struct qeth_cmd_buffer *iob,
1690 int (*reply_cb)(struct qeth_card *cb_card,
1691 struct qeth_reply *cb_reply,
1692 unsigned long cb_cmd),
1695 struct qeth_channel *channel = iob->channel;
1696 long timeout = iob->timeout;
1698 struct qeth_reply *reply = NULL;
1700 QETH_CARD_TEXT(card, 2, "sendctl");
1702 reply = qeth_alloc_reply(card);
1707 reply->callback = reply_cb;
1708 reply->param = reply_param;
1710 /* pairs with qeth_put_cmd(): */
1711 qeth_get_reply(reply);
1714 timeout = wait_event_interruptible_timeout(card->wait_q,
1715 qeth_trylock_channel(channel),
1718 qeth_put_reply(reply);
1720 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1724 iob->finalize(card, iob);
1725 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1727 qeth_enqueue_reply(card, reply);
1729 QETH_CARD_TEXT(card, 6, "noirqpnd");
1730 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1731 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1732 (addr_t) iob, 0, 0, timeout);
1733 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1735 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1736 CARD_DEVID(card), rc);
1737 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1738 qeth_dequeue_reply(card, reply);
1739 qeth_put_reply(reply);
1741 atomic_set(&channel->irq_pending, 0);
1742 wake_up(&card->wait_q);
1746 timeout = wait_for_completion_interruptible_timeout(&reply->received,
1749 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1751 qeth_dequeue_reply(card, reply);
1754 qeth_put_reply(reply);
1758 static void qeth_read_conf_data_cb(struct qeth_card *card,
1759 struct qeth_cmd_buffer *iob)
1761 unsigned char *prcd = iob->data;
1763 QETH_CARD_TEXT(card, 2, "cfgunit");
1764 card->info.chpid = prcd[30];
1765 card->info.unit_addr2 = prcd[31];
1766 card->info.cula = prcd[63];
1767 card->info.is_vm_nic = ((prcd[0x10] == _ascebc['V']) &&
1768 (prcd[0x11] == _ascebc['M']));
1769 card->info.use_v1_blkt = prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1770 prcd[76] >= 0xF1 && prcd[76] <= 0xF4;
1772 qeth_notify_reply(iob->reply, 0);
1776 static int qeth_read_conf_data(struct qeth_card *card)
1778 struct qeth_channel *channel = &card->data;
1779 struct qeth_cmd_buffer *iob;
1782 /* scan for RCD command in extended SenseID data */
1783 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1784 if (!ciw || ciw->cmd == 0)
1787 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1791 iob->callback = qeth_read_conf_data_cb;
1792 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1795 return qeth_send_control_data(card, iob, NULL, NULL);
1798 static int qeth_idx_check_activate_response(struct qeth_card *card,
1799 struct qeth_channel *channel,
1800 struct qeth_cmd_buffer *iob)
1804 rc = qeth_check_idx_response(card, iob->data);
1808 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1811 /* negative reply: */
1812 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1813 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1815 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1816 case QETH_IDX_ACT_ERR_EXCL:
1817 dev_err(&channel->ccwdev->dev,
1818 "The adapter is used exclusively by another host\n");
1820 case QETH_IDX_ACT_ERR_AUTH:
1821 case QETH_IDX_ACT_ERR_AUTH_USER:
1822 dev_err(&channel->ccwdev->dev,
1823 "Setting the device online failed because of insufficient authorization\n");
1826 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1827 CCW_DEVID(channel->ccwdev));
1832 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
1833 struct qeth_cmd_buffer *iob)
1835 struct qeth_channel *channel = iob->channel;
1839 QETH_CARD_TEXT(card, 2, "idxrdcb");
1841 rc = qeth_idx_check_activate_response(card, channel, iob);
1845 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1846 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1847 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1848 CCW_DEVID(channel->ccwdev),
1849 card->info.func_level, peer_level);
1854 memcpy(&card->token.issuer_rm_r,
1855 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1856 QETH_MPC_TOKEN_LENGTH);
1857 memcpy(&card->info.mcl_level[0],
1858 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1861 qeth_notify_reply(iob->reply, rc);
1865 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
1866 struct qeth_cmd_buffer *iob)
1868 struct qeth_channel *channel = iob->channel;
1872 QETH_CARD_TEXT(card, 2, "idxwrcb");
1874 rc = qeth_idx_check_activate_response(card, channel, iob);
1878 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1879 if ((peer_level & ~0x0100) !=
1880 qeth_peer_func_level(card->info.func_level)) {
1881 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1882 CCW_DEVID(channel->ccwdev),
1883 card->info.func_level, peer_level);
1888 qeth_notify_reply(iob->reply, rc);
1892 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1893 struct qeth_cmd_buffer *iob)
1895 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1896 u8 port = ((u8)card->dev->dev_port) | 0x80;
1897 struct ccw1 *ccw = __ccw_from_cmd(iob);
1898 struct ccw_dev_id dev_id;
1900 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
1902 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
1903 ccw_device_get_id(CARD_DDEV(card), &dev_id);
1904 iob->finalize = qeth_idx_finalize_cmd;
1906 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
1907 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1908 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1909 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1910 &card->info.func_level, 2);
1911 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
1912 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
1915 static int qeth_idx_activate_read_channel(struct qeth_card *card)
1917 struct qeth_channel *channel = &card->read;
1918 struct qeth_cmd_buffer *iob;
1921 QETH_CARD_TEXT(card, 2, "idxread");
1923 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1927 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1928 qeth_idx_setup_activate_cmd(card, iob);
1929 iob->callback = qeth_idx_activate_read_channel_cb;
1931 rc = qeth_send_control_data(card, iob, NULL, NULL);
1935 channel->state = CH_STATE_UP;
1939 static int qeth_idx_activate_write_channel(struct qeth_card *card)
1941 struct qeth_channel *channel = &card->write;
1942 struct qeth_cmd_buffer *iob;
1945 QETH_CARD_TEXT(card, 2, "idxwrite");
1947 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1951 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1952 qeth_idx_setup_activate_cmd(card, iob);
1953 iob->callback = qeth_idx_activate_write_channel_cb;
1955 rc = qeth_send_control_data(card, iob, NULL, NULL);
1959 channel->state = CH_STATE_UP;
1963 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1966 struct qeth_cmd_buffer *iob;
1968 QETH_CARD_TEXT(card, 2, "cmenblcb");
1970 iob = (struct qeth_cmd_buffer *) data;
1971 memcpy(&card->token.cm_filter_r,
1972 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1973 QETH_MPC_TOKEN_LENGTH);
1977 static int qeth_cm_enable(struct qeth_card *card)
1979 struct qeth_cmd_buffer *iob;
1981 QETH_CARD_TEXT(card, 2, "cmenable");
1983 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
1987 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
1988 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
1989 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
1990 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
1992 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
1995 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
1998 struct qeth_cmd_buffer *iob;
2000 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2002 iob = (struct qeth_cmd_buffer *) data;
2003 memcpy(&card->token.cm_connection_r,
2004 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2005 QETH_MPC_TOKEN_LENGTH);
2009 static int qeth_cm_setup(struct qeth_card *card)
2011 struct qeth_cmd_buffer *iob;
2013 QETH_CARD_TEXT(card, 2, "cmsetup");
2015 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2019 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2020 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2021 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2022 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2023 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2024 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2025 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2028 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2030 struct net_device *dev = card->dev;
2031 unsigned int new_mtu;
2034 /* IQD needs accurate max MTU to set up its RX buffers: */
2037 /* tolerate quirky HW: */
2038 max_mtu = ETH_MAX_MTU;
2043 /* move any device with default MTU to new max MTU: */
2044 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2046 /* adjust RX buffer size to new max MTU: */
2047 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2048 if (dev->max_mtu && dev->max_mtu != max_mtu)
2049 qeth_free_qdio_queues(card);
2053 /* default MTUs for first setup: */
2054 else if (IS_LAYER2(card))
2055 new_mtu = ETH_DATA_LEN;
2057 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2060 dev->max_mtu = max_mtu;
2061 dev->mtu = min(new_mtu, max_mtu);
2066 static int qeth_get_mtu_outof_framesize(int framesize)
2068 switch (framesize) {
2082 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2085 __u16 mtu, framesize;
2088 struct qeth_cmd_buffer *iob;
2090 QETH_CARD_TEXT(card, 2, "ulpenacb");
2092 iob = (struct qeth_cmd_buffer *) data;
2093 memcpy(&card->token.ulp_filter_r,
2094 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2095 QETH_MPC_TOKEN_LENGTH);
2097 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2098 mtu = qeth_get_mtu_outof_framesize(framesize);
2100 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2102 *(u16 *)reply->param = mtu;
2104 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2105 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2107 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2108 card->info.link_type = link_type;
2110 card->info.link_type = 0;
2111 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2115 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2118 return QETH_PROT_OSN2;
2119 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2122 static int qeth_ulp_enable(struct qeth_card *card)
2124 u8 prot_type = qeth_mpc_select_prot_type(card);
2125 struct qeth_cmd_buffer *iob;
2129 QETH_CARD_TEXT(card, 2, "ulpenabl");
2131 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2135 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2136 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2137 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2138 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2139 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2140 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2141 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2144 return qeth_update_max_mtu(card, max_mtu);
2147 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2150 struct qeth_cmd_buffer *iob;
2152 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2154 iob = (struct qeth_cmd_buffer *) data;
2155 memcpy(&card->token.ulp_connection_r,
2156 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2157 QETH_MPC_TOKEN_LENGTH);
2158 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2160 QETH_CARD_TEXT(card, 2, "olmlimit");
2161 dev_err(&card->gdev->dev, "A connection could not be "
2162 "established because of an OLM limit\n");
2168 static int qeth_ulp_setup(struct qeth_card *card)
2171 struct qeth_cmd_buffer *iob;
2172 struct ccw_dev_id dev_id;
2174 QETH_CARD_TEXT(card, 2, "ulpsetup");
2176 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2180 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2181 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2182 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2183 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2184 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2185 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2187 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2188 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2189 temp = (card->info.cula << 8) + card->info.unit_addr2;
2190 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2191 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2194 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2196 struct qeth_qdio_out_buffer *newbuf;
2198 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2202 newbuf->buffer = q->qdio_bufs[bidx];
2203 skb_queue_head_init(&newbuf->skb_list);
2204 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2206 newbuf->next_pending = q->bufs[bidx];
2207 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2208 q->bufs[bidx] = newbuf;
2212 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2217 qeth_drain_output_queue(q, true);
2218 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2222 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2224 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2229 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2236 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2240 QETH_CARD_TEXT(card, 2, "allcqdbf");
2242 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2243 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2246 QETH_CARD_TEXT(card, 2, "inq");
2247 card->qdio.in_q = qeth_alloc_qdio_queue();
2248 if (!card->qdio.in_q)
2251 /* inbound buffer pool */
2252 if (qeth_alloc_buffer_pool(card))
2256 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2257 card->qdio.out_qs[i] = qeth_alloc_output_queue();
2258 if (!card->qdio.out_qs[i])
2260 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2261 QETH_CARD_HEX(card, 2, &card->qdio.out_qs[i], sizeof(void *));
2262 card->qdio.out_qs[i]->card = card;
2263 card->qdio.out_qs[i]->queue_no = i;
2264 /* give outbound qeth_qdio_buffers their qdio_buffers */
2265 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2266 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2267 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2268 goto out_freeoutqbufs;
2273 if (qeth_alloc_cq(card))
2281 kmem_cache_free(qeth_qdio_outbuf_cache,
2282 card->qdio.out_qs[i]->bufs[j]);
2283 card->qdio.out_qs[i]->bufs[j] = NULL;
2287 qeth_free_output_queue(card->qdio.out_qs[--i]);
2288 card->qdio.out_qs[i] = NULL;
2290 qeth_free_buffer_pool(card);
2292 qeth_free_qdio_queue(card->qdio.in_q);
2293 card->qdio.in_q = NULL;
2295 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2299 static void qeth_free_qdio_queues(struct qeth_card *card)
2303 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2304 QETH_QDIO_UNINITIALIZED)
2308 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2309 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2310 if (card->qdio.in_q->bufs[j].rx_skb)
2311 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2313 qeth_free_qdio_queue(card->qdio.in_q);
2314 card->qdio.in_q = NULL;
2315 /* inbound buffer pool */
2316 qeth_free_buffer_pool(card);
2317 /* free outbound qdio_qs */
2318 for (i = 0; i < card->qdio.no_out_queues; i++) {
2319 qeth_free_output_queue(card->qdio.out_qs[i]);
2320 card->qdio.out_qs[i] = NULL;
2324 static void qeth_create_qib_param_field(struct qeth_card *card,
2328 param_field[0] = _ascebc['P'];
2329 param_field[1] = _ascebc['C'];
2330 param_field[2] = _ascebc['I'];
2331 param_field[3] = _ascebc['T'];
2332 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2333 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2334 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2337 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2340 param_field[16] = _ascebc['B'];
2341 param_field[17] = _ascebc['L'];
2342 param_field[18] = _ascebc['K'];
2343 param_field[19] = _ascebc['T'];
2344 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2345 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2346 *((unsigned int *) (¶m_field[28])) =
2347 card->info.blkt.inter_packet_jumbo;
2350 static int qeth_qdio_activate(struct qeth_card *card)
2352 QETH_CARD_TEXT(card, 3, "qdioact");
2353 return qdio_activate(CARD_DDEV(card));
2356 static int qeth_dm_act(struct qeth_card *card)
2358 struct qeth_cmd_buffer *iob;
2360 QETH_CARD_TEXT(card, 2, "dmact");
2362 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2366 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2367 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2368 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2369 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2370 return qeth_send_control_data(card, iob, NULL, NULL);
2373 static int qeth_mpc_initialize(struct qeth_card *card)
2377 QETH_CARD_TEXT(card, 2, "mpcinit");
2379 rc = qeth_issue_next_read(card);
2381 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2384 rc = qeth_cm_enable(card);
2386 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2389 rc = qeth_cm_setup(card);
2391 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2394 rc = qeth_ulp_enable(card);
2396 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2399 rc = qeth_ulp_setup(card);
2401 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2404 rc = qeth_alloc_qdio_queues(card);
2406 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2409 rc = qeth_qdio_establish(card);
2411 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2412 qeth_free_qdio_queues(card);
2415 rc = qeth_qdio_activate(card);
2417 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2420 rc = qeth_dm_act(card);
2422 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2428 qeth_qdio_clear_card(card, !IS_IQD(card));
2429 qdio_free(CARD_DDEV(card));
2433 void qeth_print_status_message(struct qeth_card *card)
2435 switch (card->info.type) {
2436 case QETH_CARD_TYPE_OSD:
2437 case QETH_CARD_TYPE_OSM:
2438 case QETH_CARD_TYPE_OSX:
2439 /* VM will use a non-zero first character
2440 * to indicate a HiperSockets like reporting
2441 * of the level OSA sets the first character to zero
2443 if (!card->info.mcl_level[0]) {
2444 sprintf(card->info.mcl_level, "%02x%02x",
2445 card->info.mcl_level[2],
2446 card->info.mcl_level[3]);
2450 case QETH_CARD_TYPE_IQD:
2451 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2452 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2453 card->info.mcl_level[0]];
2454 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2455 card->info.mcl_level[1]];
2456 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2457 card->info.mcl_level[2]];
2458 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2459 card->info.mcl_level[3]];
2460 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2464 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2466 dev_info(&card->gdev->dev,
2467 "Device is a%s card%s%s%s\nwith link type %s.\n",
2468 qeth_get_cardname(card),
2469 (card->info.mcl_level[0]) ? " (level: " : "",
2470 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2471 (card->info.mcl_level[0]) ? ")" : "",
2472 qeth_get_cardname_short(card));
2474 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2476 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2478 struct qeth_buffer_pool_entry *entry;
2480 QETH_CARD_TEXT(card, 5, "inwrklst");
2482 list_for_each_entry(entry,
2483 &card->qdio.init_pool.entry_list, init_list) {
2484 qeth_put_buffer_pool_entry(card, entry);
2488 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2489 struct qeth_card *card)
2491 struct list_head *plh;
2492 struct qeth_buffer_pool_entry *entry;
2496 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2499 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2500 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2502 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2503 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2509 list_del_init(&entry->list);
2514 /* no free buffer in pool so take first one and swap pages */
2515 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2516 struct qeth_buffer_pool_entry, list);
2517 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2518 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2519 page = alloc_page(GFP_ATOMIC);
2523 free_page((unsigned long)entry->elements[i]);
2524 entry->elements[i] = page_address(page);
2525 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2529 list_del_init(&entry->list);
2533 static int qeth_init_input_buffer(struct qeth_card *card,
2534 struct qeth_qdio_buffer *buf)
2536 struct qeth_buffer_pool_entry *pool_entry;
2539 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2540 buf->rx_skb = netdev_alloc_skb(card->dev,
2541 QETH_RX_PULL_LEN + ETH_HLEN);
2546 pool_entry = qeth_find_free_buffer_pool_entry(card);
2551 * since the buffer is accessed only from the input_tasklet
2552 * there shouldn't be a need to synchronize; also, since we use
2553 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2557 buf->pool_entry = pool_entry;
2558 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2559 buf->buffer->element[i].length = PAGE_SIZE;
2560 buf->buffer->element[i].addr = pool_entry->elements[i];
2561 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2562 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2564 buf->buffer->element[i].eflags = 0;
2565 buf->buffer->element[i].sflags = 0;
2570 int qeth_init_qdio_queues(struct qeth_card *card)
2575 QETH_CARD_TEXT(card, 2, "initqdqs");
2578 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2579 memset(&card->rx, 0, sizeof(struct qeth_rx));
2580 qeth_initialize_working_pool_list(card);
2581 /*give only as many buffers to hardware as we have buffer pool entries*/
2582 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2583 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2584 card->qdio.in_q->next_buf_to_init =
2585 card->qdio.in_buf_pool.buf_count - 1;
2586 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2587 card->qdio.in_buf_pool.buf_count - 1);
2589 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2594 rc = qeth_cq_init(card);
2599 /* outbound queue */
2600 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2601 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2603 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2604 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2605 queue->next_buf_to_fill = 0;
2607 atomic_set(&queue->used_buffers, 0);
2608 atomic_set(&queue->set_pci_flags_count, 0);
2609 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2613 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2615 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2616 struct qeth_cmd_buffer *iob)
2618 qeth_mpc_finalize_cmd(card, iob);
2620 /* override with IPA-specific values: */
2621 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa;
2622 iob->reply->seqno = card->seqno.ipa++;
2625 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2628 u8 prot_type = qeth_mpc_select_prot_type(card);
2629 u16 total_length = iob->length;
2631 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2633 iob->finalize = qeth_ipa_finalize_cmd;
2635 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2636 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2637 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2638 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2639 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2640 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2641 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2642 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2644 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2646 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2647 enum qeth_ipa_cmds cmd_code,
2648 enum qeth_prot_versions prot,
2649 unsigned int data_length)
2651 enum qeth_link_types link_type = card->info.link_type;
2652 struct qeth_cmd_buffer *iob;
2653 struct qeth_ipacmd_hdr *hdr;
2655 data_length += offsetof(struct qeth_ipa_cmd, data);
2656 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2661 qeth_prepare_ipa_cmd(card, iob, data_length);
2663 hdr = &__ipa_cmd(iob)->hdr;
2664 hdr->command = cmd_code;
2665 hdr->initiator = IPA_CMD_INITIATOR_HOST;
2666 /* hdr->seqno is set by qeth_send_control_data() */
2667 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2668 hdr->rel_adapter_no = (u8) card->dev->dev_port;
2669 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2670 hdr->param_count = 1;
2671 hdr->prot_version = prot;
2674 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2676 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2677 struct qeth_reply *reply, unsigned long data)
2679 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2681 return (cmd->hdr.return_code) ? -EIO : 0;
2685 * qeth_send_ipa_cmd() - send an IPA command
2687 * See qeth_send_control_data() for explanation of the arguments.
2690 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2691 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2697 QETH_CARD_TEXT(card, 4, "sendipa");
2699 if (card->read_or_write_problem) {
2704 if (reply_cb == NULL)
2705 reply_cb = qeth_send_ipa_cmd_cb;
2706 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
2708 qeth_clear_ipacmd_list(card);
2709 qeth_schedule_recovery(card);
2713 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2715 static int qeth_send_startlan_cb(struct qeth_card *card,
2716 struct qeth_reply *reply, unsigned long data)
2718 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2720 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2723 return (cmd->hdr.return_code) ? -EIO : 0;
2726 static int qeth_send_startlan(struct qeth_card *card)
2728 struct qeth_cmd_buffer *iob;
2730 QETH_CARD_TEXT(card, 2, "strtlan");
2732 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
2735 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
2738 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2740 if (!cmd->hdr.return_code)
2741 cmd->hdr.return_code =
2742 cmd->data.setadapterparms.hdr.return_code;
2743 return cmd->hdr.return_code;
2746 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2747 struct qeth_reply *reply, unsigned long data)
2749 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2751 QETH_CARD_TEXT(card, 3, "quyadpcb");
2752 if (qeth_setadpparms_inspect_rc(cmd))
2755 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2756 card->info.link_type =
2757 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2758 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
2760 card->options.adp.supported_funcs =
2761 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2765 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2766 enum qeth_ipa_setadp_cmd adp_cmd,
2767 unsigned int data_length)
2769 struct qeth_ipacmd_setadpparms_hdr *hdr;
2770 struct qeth_cmd_buffer *iob;
2772 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2774 offsetof(struct qeth_ipacmd_setadpparms,
2779 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2780 hdr->cmdlength = sizeof(*hdr) + data_length;
2781 hdr->command_code = adp_cmd;
2782 hdr->used_total = 1;
2787 static int qeth_query_setadapterparms(struct qeth_card *card)
2790 struct qeth_cmd_buffer *iob;
2792 QETH_CARD_TEXT(card, 3, "queryadp");
2793 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2794 SETADP_DATA_SIZEOF(query_cmds_supp));
2797 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2801 static int qeth_query_ipassists_cb(struct qeth_card *card,
2802 struct qeth_reply *reply, unsigned long data)
2804 struct qeth_ipa_cmd *cmd;
2806 QETH_CARD_TEXT(card, 2, "qipasscb");
2808 cmd = (struct qeth_ipa_cmd *) data;
2810 switch (cmd->hdr.return_code) {
2811 case IPA_RC_SUCCESS:
2813 case IPA_RC_NOTSUPP:
2814 case IPA_RC_L2_UNSUPPORTED_CMD:
2815 QETH_CARD_TEXT(card, 2, "ipaunsup");
2816 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2817 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2820 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2821 CARD_DEVID(card), cmd->hdr.return_code);
2825 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2826 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2827 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2828 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2829 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2830 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2832 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2837 static int qeth_query_ipassists(struct qeth_card *card,
2838 enum qeth_prot_versions prot)
2841 struct qeth_cmd_buffer *iob;
2843 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
2844 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
2847 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2851 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
2852 struct qeth_reply *reply, unsigned long data)
2854 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2855 struct qeth_query_switch_attributes *attrs;
2856 struct qeth_switch_info *sw_info;
2858 QETH_CARD_TEXT(card, 2, "qswiatcb");
2859 if (qeth_setadpparms_inspect_rc(cmd))
2862 sw_info = (struct qeth_switch_info *)reply->param;
2863 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
2864 sw_info->capabilities = attrs->capabilities;
2865 sw_info->settings = attrs->settings;
2866 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
2871 int qeth_query_switch_attributes(struct qeth_card *card,
2872 struct qeth_switch_info *sw_info)
2874 struct qeth_cmd_buffer *iob;
2876 QETH_CARD_TEXT(card, 2, "qswiattr");
2877 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
2879 if (!netif_carrier_ok(card->dev))
2881 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
2884 return qeth_send_ipa_cmd(card, iob,
2885 qeth_query_switch_attributes_cb, sw_info);
2888 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
2889 enum qeth_diags_cmds sub_cmd,
2890 unsigned int data_length)
2892 struct qeth_ipacmd_diagass *cmd;
2893 struct qeth_cmd_buffer *iob;
2895 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
2896 DIAG_HDR_LEN + data_length);
2900 cmd = &__ipa_cmd(iob)->data.diagass;
2901 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
2902 cmd->subcmd = sub_cmd;
2905 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
2907 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2908 struct qeth_reply *reply, unsigned long data)
2910 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2911 u16 rc = cmd->hdr.return_code;
2914 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2918 card->info.diagass_support = cmd->data.diagass.ext;
2922 static int qeth_query_setdiagass(struct qeth_card *card)
2924 struct qeth_cmd_buffer *iob;
2926 QETH_CARD_TEXT(card, 2, "qdiagass");
2927 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
2930 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2933 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2935 unsigned long info = get_zeroed_page(GFP_KERNEL);
2936 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2937 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2938 struct ccw_dev_id ccwid;
2941 tid->chpid = card->info.chpid;
2942 ccw_device_get_id(CARD_RDEV(card), &ccwid);
2943 tid->ssid = ccwid.ssid;
2944 tid->devno = ccwid.devno;
2947 level = stsi(NULL, 0, 0, 0);
2948 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
2949 tid->lparnr = info222->lpar_number;
2950 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
2951 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2952 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2958 static int qeth_hw_trap_cb(struct qeth_card *card,
2959 struct qeth_reply *reply, unsigned long data)
2961 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2962 u16 rc = cmd->hdr.return_code;
2965 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2971 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2973 struct qeth_cmd_buffer *iob;
2974 struct qeth_ipa_cmd *cmd;
2976 QETH_CARD_TEXT(card, 2, "diagtrap");
2977 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
2980 cmd = __ipa_cmd(iob);
2981 cmd->data.diagass.type = 1;
2982 cmd->data.diagass.action = action;
2984 case QETH_DIAGS_TRAP_ARM:
2985 cmd->data.diagass.options = 0x0003;
2986 cmd->data.diagass.ext = 0x00010000 +
2987 sizeof(struct qeth_trap_id);
2988 qeth_get_trap_id(card,
2989 (struct qeth_trap_id *)cmd->data.diagass.cdata);
2991 case QETH_DIAGS_TRAP_DISARM:
2992 cmd->data.diagass.options = 0x0001;
2994 case QETH_DIAGS_TRAP_CAPTURE:
2997 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
2999 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3001 static int qeth_check_qdio_errors(struct qeth_card *card,
3002 struct qdio_buffer *buf,
3003 unsigned int qdio_error,
3004 const char *dbftext)
3007 QETH_CARD_TEXT(card, 2, dbftext);
3008 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3009 buf->element[15].sflags);
3010 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3011 buf->element[14].sflags);
3012 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3013 if ((buf->element[15].sflags) == 0x12) {
3014 QETH_CARD_STAT_INC(card, rx_dropped);
3022 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3024 struct qeth_qdio_q *queue = card->qdio.in_q;
3025 struct list_head *lh;
3031 count = (index < queue->next_buf_to_init)?
3032 card->qdio.in_buf_pool.buf_count -
3033 (queue->next_buf_to_init - index) :
3034 card->qdio.in_buf_pool.buf_count -
3035 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3036 /* only requeue at a certain threshold to avoid SIGAs */
3037 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3038 for (i = queue->next_buf_to_init;
3039 i < queue->next_buf_to_init + count; ++i) {
3040 if (qeth_init_input_buffer(card,
3041 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3048 if (newcount < count) {
3049 /* we are in memory shortage so we switch back to
3050 traditional skb allocation and drop packages */
3051 atomic_set(&card->force_alloc_skb, 3);
3054 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3059 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3061 if (i == card->qdio.in_buf_pool.buf_count) {
3062 QETH_CARD_TEXT(card, 2, "qsarbw");
3063 card->reclaim_index = index;
3064 schedule_delayed_work(
3065 &card->buffer_reclaim_work,
3066 QETH_RECLAIM_WORK_TIME);
3072 * according to old code it should be avoided to requeue all
3073 * 128 buffers in order to benefit from PCI avoidance.
3074 * this function keeps at least one buffer (the buffer at
3075 * 'index') un-requeued -> this buffer is the first buffer that
3076 * will be requeued the next time
3078 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3079 queue->next_buf_to_init, count);
3081 QETH_CARD_TEXT(card, 2, "qinberr");
3083 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3084 QDIO_MAX_BUFFERS_PER_Q;
3088 static void qeth_buffer_reclaim_work(struct work_struct *work)
3090 struct qeth_card *card = container_of(work, struct qeth_card,
3091 buffer_reclaim_work.work);
3093 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3094 qeth_queue_input_buffer(card, card->reclaim_index);
3097 static void qeth_handle_send_error(struct qeth_card *card,
3098 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3100 int sbalf15 = buffer->buffer->element[15].sflags;
3102 QETH_CARD_TEXT(card, 6, "hdsnderr");
3103 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3108 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3111 QETH_CARD_TEXT(card, 1, "lnkfail");
3112 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3113 (u16)qdio_err, (u8)sbalf15);
3117 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3118 * @queue: queue to check for packing buffer
3120 * Returns number of buffers that were prepared for flush.
3122 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3124 struct qeth_qdio_out_buffer *buffer;
3126 buffer = queue->bufs[queue->next_buf_to_fill];
3127 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3128 (buffer->next_element_to_fill > 0)) {
3129 /* it's a packing buffer */
3130 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3131 queue->next_buf_to_fill =
3132 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3139 * Switched to packing state if the number of used buffers on a queue
3140 * reaches a certain limit.
3142 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3144 if (!queue->do_pack) {
3145 if (atomic_read(&queue->used_buffers)
3146 >= QETH_HIGH_WATERMARK_PACK){
3147 /* switch non-PACKING -> PACKING */
3148 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3149 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3156 * Switches from packing to non-packing mode. If there is a packing
3157 * buffer on the queue this buffer will be prepared to be flushed.
3158 * In that case 1 is returned to inform the caller. If no buffer
3159 * has to be flushed, zero is returned.
3161 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3163 if (queue->do_pack) {
3164 if (atomic_read(&queue->used_buffers)
3165 <= QETH_LOW_WATERMARK_PACK) {
3166 /* switch PACKING -> non-PACKING */
3167 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3168 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3170 return qeth_prep_flush_pack_buffer(queue);
3176 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3179 struct qeth_qdio_out_buffer *buf;
3182 unsigned int qdio_flags;
3184 for (i = index; i < index + count; ++i) {
3185 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3186 buf = queue->bufs[bidx];
3187 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3188 SBAL_EFLAGS_LAST_ENTRY;
3190 if (queue->bufstates)
3191 queue->bufstates[bidx].user = buf;
3193 if (IS_IQD(queue->card))
3196 if (!queue->do_pack) {
3197 if ((atomic_read(&queue->used_buffers) >=
3198 (QETH_HIGH_WATERMARK_PACK -
3199 QETH_WATERMARK_PACK_FUZZ)) &&
3200 !atomic_read(&queue->set_pci_flags_count)) {
3201 /* it's likely that we'll go to packing
3203 atomic_inc(&queue->set_pci_flags_count);
3204 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3207 if (!atomic_read(&queue->set_pci_flags_count)) {
3209 * there's no outstanding PCI any more, so we
3210 * have to request a PCI to be sure the the PCI
3211 * will wake at some time in the future then we
3212 * can flush packed buffers that might still be
3213 * hanging around, which can happen if no
3214 * further send was requested by the stack
3216 atomic_inc(&queue->set_pci_flags_count);
3217 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3222 QETH_TXQ_STAT_ADD(queue, bufs, count);
3223 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3224 if (atomic_read(&queue->set_pci_flags_count))
3225 qdio_flags |= QDIO_FLAG_PCI_OUT;
3226 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3227 queue->queue_no, index, count);
3229 QETH_TXQ_STAT_ADD(queue, tx_errors, count);
3230 /* ignore temporary SIGA errors without busy condition */
3233 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3234 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3235 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3236 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3237 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3239 /* this must not happen under normal circumstances. if it
3240 * happens something is really wrong -> recover */
3241 qeth_schedule_recovery(queue->card);
3246 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3250 int q_was_packing = 0;
3253 * check if weed have to switch to non-packing mode or if
3254 * we have to get a pci flag out on the queue
3256 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3257 !atomic_read(&queue->set_pci_flags_count)) {
3258 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3259 QETH_OUT_Q_UNLOCKED) {
3261 * If we get in here, there was no action in
3262 * do_send_packet. So, we check if there is a
3263 * packing buffer to be flushed here.
3265 index = queue->next_buf_to_fill;
3266 q_was_packing = queue->do_pack;
3267 /* queue->do_pack may change */
3269 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3271 !atomic_read(&queue->set_pci_flags_count))
3272 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3274 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3276 qeth_flush_buffers(queue, index, flush_cnt);
3277 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3282 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3283 unsigned long card_ptr)
3285 struct qeth_card *card = (struct qeth_card *)card_ptr;
3287 if (card->dev->flags & IFF_UP)
3288 napi_schedule(&card->napi);
3291 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3295 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3299 if (card->options.cq == cq) {
3304 if (card->state != CARD_STATE_DOWN) {
3309 qeth_free_qdio_queues(card);
3310 card->options.cq = cq;
3317 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3319 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3320 unsigned int queue, int first_element,
3323 struct qeth_qdio_q *cq = card->qdio.c_q;
3327 if (!qeth_is_cq(card, queue))
3330 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3331 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3332 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3335 netif_tx_stop_all_queues(card->dev);
3336 qeth_schedule_recovery(card);
3340 for (i = first_element; i < first_element + count; ++i) {
3341 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3342 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3345 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3346 buffer->element[e].addr) {
3347 unsigned long phys_aob_addr;
3349 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3350 qeth_qdio_handle_aob(card, phys_aob_addr);
3353 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3355 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3356 card->qdio.c_q->next_buf_to_init,
3359 dev_warn(&card->gdev->dev,
3360 "QDIO reported an error, rc=%i\n", rc);
3361 QETH_CARD_TEXT(card, 2, "qcqherr");
3363 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3364 + count) % QDIO_MAX_BUFFERS_PER_Q;
3367 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3368 unsigned int qdio_err, int queue,
3369 int first_elem, int count,
3370 unsigned long card_ptr)
3372 struct qeth_card *card = (struct qeth_card *)card_ptr;
3374 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3375 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3377 if (qeth_is_cq(card, queue))
3378 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3380 qeth_schedule_recovery(card);
3383 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3384 unsigned int qdio_error, int __queue,
3385 int first_element, int count,
3386 unsigned long card_ptr)
3388 struct qeth_card *card = (struct qeth_card *) card_ptr;
3389 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3390 struct qeth_qdio_out_buffer *buffer;
3391 struct net_device *dev = card->dev;
3392 struct netdev_queue *txq;
3395 QETH_CARD_TEXT(card, 6, "qdouhdl");
3396 if (qdio_error & QDIO_ERROR_FATAL) {
3397 QETH_CARD_TEXT(card, 2, "achkcond");
3398 netif_tx_stop_all_queues(dev);
3399 qeth_schedule_recovery(card);
3403 for (i = first_element; i < (first_element + count); ++i) {
3404 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3405 buffer = queue->bufs[bidx];
3406 qeth_handle_send_error(card, buffer, qdio_error);
3408 if (queue->bufstates &&
3409 (queue->bufstates[bidx].flags &
3410 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3411 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3413 if (atomic_cmpxchg(&buffer->state,
3414 QETH_QDIO_BUF_PRIMED,
3415 QETH_QDIO_BUF_PENDING) ==
3416 QETH_QDIO_BUF_PRIMED) {
3417 qeth_notify_skbs(queue, buffer,
3420 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3422 /* prepare the queue slot for re-use: */
3423 qeth_scrub_qdio_buffer(buffer->buffer,
3424 queue->max_elements);
3425 if (qeth_init_qdio_out_buf(queue, bidx)) {
3426 QETH_CARD_TEXT(card, 2, "outofbuf");
3427 qeth_schedule_recovery(card);
3430 if (card->options.cq == QETH_CQ_ENABLED) {
3431 enum iucv_tx_notify n;
3433 n = qeth_compute_cq_notification(
3434 buffer->buffer->element[15].sflags, 0);
3435 qeth_notify_skbs(queue, buffer, n);
3438 qeth_clear_output_buffer(queue, buffer);
3440 qeth_cleanup_handled_pending(queue, bidx, 0);
3442 atomic_sub(count, &queue->used_buffers);
3443 /* check if we need to do something on this outbound queue */
3445 qeth_check_outbound_queue(queue);
3448 __queue = qeth_iqd_translate_txq(dev, __queue);
3449 txq = netdev_get_tx_queue(dev, __queue);
3450 /* xmit may have observed the full-condition, but not yet stopped the
3451 * txq. In which case the code below won't trigger. So before returning,
3452 * xmit will re-check the txq's fill level and wake it up if needed.
3454 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3455 netif_tx_wake_queue(txq);
3459 * Note: Function assumes that we have 4 outbound queues.
3461 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3463 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3466 switch (card->qdio.do_prio_queueing) {
3467 case QETH_PRIO_Q_ING_TOS:
3468 case QETH_PRIO_Q_ING_PREC:
3469 switch (qeth_get_ip_version(skb)) {
3471 tos = ipv4_get_dsfield(ip_hdr(skb));
3474 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3477 return card->qdio.default_out_queue;
3479 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3480 return ~tos >> 6 & 3;
3481 if (tos & IPTOS_MINCOST)
3483 if (tos & IPTOS_RELIABILITY)
3485 if (tos & IPTOS_THROUGHPUT)
3487 if (tos & IPTOS_LOWDELAY)
3490 case QETH_PRIO_Q_ING_SKB:
3491 if (skb->priority > 5)
3493 return ~skb->priority >> 1 & 3;
3494 case QETH_PRIO_Q_ING_VLAN:
3495 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3496 return ~ntohs(veth->h_vlan_TCI) >>
3497 (VLAN_PRIO_SHIFT + 1) & 3;
3502 return card->qdio.default_out_queue;
3504 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3507 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3510 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3511 * fragmented part of the SKB. Returns zero for linear SKB.
3513 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3515 int cnt, elements = 0;
3517 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3518 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3520 elements += qeth_get_elements_for_range(
3521 (addr_t)skb_frag_address(frag),
3522 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3528 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3529 * to transmit an skb.
3530 * @skb: the skb to operate on.
3531 * @data_offset: skip this part of the skb's linear data
3533 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3534 * skb's data (both its linear part and paged fragments).
3536 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3538 unsigned int elements = qeth_get_elements_for_frags(skb);
3539 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3540 addr_t start = (addr_t)skb->data + data_offset;
3543 elements += qeth_get_elements_for_range(start, end);
3546 EXPORT_SYMBOL_GPL(qeth_count_elements);
3548 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3552 * qeth_add_hw_header() - add a HW header to an skb.
3553 * @skb: skb that the HW header should be added to.
3554 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3555 * it contains a valid pointer to a qeth_hdr.
3556 * @hdr_len: length of the HW header.
3557 * @proto_len: length of protocol headers that need to be in same page as the
3560 * Returns the pushed length. If the header can't be pushed on
3561 * (eg. because it would cross a page boundary), it is allocated from
3562 * the cache instead and 0 is returned.
3563 * The number of needed buffer elements is returned in @elements.
3564 * Error to create the hdr is indicated by returning with < 0.
3566 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3567 struct sk_buff *skb, struct qeth_hdr **hdr,
3568 unsigned int hdr_len, unsigned int proto_len,
3569 unsigned int *elements)
3571 const unsigned int contiguous = proto_len ? proto_len : 1;
3572 const unsigned int max_elements = queue->max_elements;
3573 unsigned int __elements;
3579 start = (addr_t)skb->data - hdr_len;
3580 end = (addr_t)skb->data;
3582 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3583 /* Push HW header into same page as first protocol header. */
3585 /* ... but TSO always needs a separate element for headers: */
3586 if (skb_is_gso(skb))
3587 __elements = 1 + qeth_count_elements(skb, proto_len);
3589 __elements = qeth_count_elements(skb, 0);
3590 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3591 /* Push HW header into preceding page, flush with skb->data. */
3593 __elements = 1 + qeth_count_elements(skb, 0);
3595 /* Use header cache, copy protocol headers up. */
3597 __elements = 1 + qeth_count_elements(skb, proto_len);
3600 /* Compress skb to fit into one IO buffer: */
3601 if (__elements > max_elements) {
3602 if (!skb_is_nonlinear(skb)) {
3603 /* Drop it, no easy way of shrinking it further. */
3604 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3605 max_elements, __elements, skb->len);
3609 rc = skb_linearize(skb);
3611 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3615 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3616 /* Linearization changed the layout, re-evaluate: */
3620 *elements = __elements;
3621 /* Add the header: */
3623 *hdr = skb_push(skb, hdr_len);
3627 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3629 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3632 /* Copy protocol headers behind HW header: */
3633 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3637 static void __qeth_fill_buffer(struct sk_buff *skb,
3638 struct qeth_qdio_out_buffer *buf,
3639 bool is_first_elem, unsigned int offset)
3641 struct qdio_buffer *buffer = buf->buffer;
3642 int element = buf->next_element_to_fill;
3643 int length = skb_headlen(skb) - offset;
3644 char *data = skb->data + offset;
3645 unsigned int elem_length, cnt;
3647 /* map linear part into buffer element(s) */
3648 while (length > 0) {
3649 elem_length = min_t(unsigned int, length,
3650 PAGE_SIZE - offset_in_page(data));
3652 buffer->element[element].addr = data;
3653 buffer->element[element].length = elem_length;
3654 length -= elem_length;
3655 if (is_first_elem) {
3656 is_first_elem = false;
3657 if (length || skb_is_nonlinear(skb))
3658 /* skb needs additional elements */
3659 buffer->element[element].eflags =
3660 SBAL_EFLAGS_FIRST_FRAG;
3662 buffer->element[element].eflags = 0;
3664 buffer->element[element].eflags =
3665 SBAL_EFLAGS_MIDDLE_FRAG;
3668 data += elem_length;
3672 /* map page frags into buffer element(s) */
3673 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3674 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3676 data = skb_frag_address(frag);
3677 length = skb_frag_size(frag);
3678 while (length > 0) {
3679 elem_length = min_t(unsigned int, length,
3680 PAGE_SIZE - offset_in_page(data));
3682 buffer->element[element].addr = data;
3683 buffer->element[element].length = elem_length;
3684 buffer->element[element].eflags =
3685 SBAL_EFLAGS_MIDDLE_FRAG;
3687 length -= elem_length;
3688 data += elem_length;
3693 if (buffer->element[element - 1].eflags)
3694 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3695 buf->next_element_to_fill = element;
3699 * qeth_fill_buffer() - map skb into an output buffer
3700 * @queue: QDIO queue to submit the buffer on
3701 * @buf: buffer to transport the skb
3702 * @skb: skb to map into the buffer
3703 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3704 * from qeth_core_header_cache.
3705 * @offset: when mapping the skb, start at skb->data + offset
3706 * @hd_len: if > 0, build a dedicated header element of this size
3707 * flush: Prepare the buffer to be flushed, regardless of its fill level.
3709 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3710 struct qeth_qdio_out_buffer *buf,
3711 struct sk_buff *skb, struct qeth_hdr *hdr,
3712 unsigned int offset, unsigned int hd_len,
3715 struct qdio_buffer *buffer = buf->buffer;
3716 bool is_first_elem = true;
3718 __skb_queue_tail(&buf->skb_list, skb);
3720 /* build dedicated header element */
3722 int element = buf->next_element_to_fill;
3723 is_first_elem = false;
3725 buffer->element[element].addr = hdr;
3726 buffer->element[element].length = hd_len;
3727 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3728 /* remember to free cache-allocated qeth_hdr: */
3729 buf->is_header[element] = ((void *)hdr != skb->data);
3730 buf->next_element_to_fill++;
3733 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3735 if (!queue->do_pack) {
3736 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3738 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3740 QETH_TXQ_STAT_INC(queue, skbs_pack);
3741 /* If the buffer still has free elements, keep using it. */
3743 buf->next_element_to_fill < queue->max_elements)
3747 /* flush out the buffer */
3748 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3749 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3750 QDIO_MAX_BUFFERS_PER_Q;
3754 static int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue,
3755 struct sk_buff *skb, struct qeth_hdr *hdr,
3756 unsigned int offset, unsigned int hd_len)
3758 int index = queue->next_buf_to_fill;
3759 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
3760 struct netdev_queue *txq;
3761 bool stopped = false;
3763 /* Just a sanity check, the wake/stop logic should ensure that we always
3764 * get a free buffer.
3766 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3769 txq = netdev_get_tx_queue(queue->card->dev, skb_get_queue_mapping(skb));
3771 if (atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3772 /* If a TX completion happens right _here_ and misses to wake
3773 * the txq, then our re-check below will catch the race.
3775 QETH_TXQ_STAT_INC(queue, stopped);
3776 netif_tx_stop_queue(txq);
3780 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len, stopped);
3781 qeth_flush_buffers(queue, index, 1);
3783 if (stopped && !qeth_out_queue_is_full(queue))
3784 netif_tx_start_queue(txq);
3788 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3789 struct sk_buff *skb, struct qeth_hdr *hdr,
3790 unsigned int offset, unsigned int hd_len,
3791 int elements_needed)
3793 struct qeth_qdio_out_buffer *buffer;
3794 struct netdev_queue *txq;
3795 bool stopped = false;
3797 int flush_count = 0;
3802 /* spin until we get the queue ... */
3803 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3804 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3805 start_index = queue->next_buf_to_fill;
3806 buffer = queue->bufs[queue->next_buf_to_fill];
3808 /* Just a sanity check, the wake/stop logic should ensure that we always
3809 * get a free buffer.
3811 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3812 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3816 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3818 /* check if we need to switch packing state of this queue */
3819 qeth_switch_to_packing_if_needed(queue);
3820 if (queue->do_pack) {
3822 /* does packet fit in current buffer? */
3823 if (buffer->next_element_to_fill + elements_needed >
3824 queue->max_elements) {
3825 /* ... no -> set state PRIMED */
3826 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3828 queue->next_buf_to_fill =
3829 (queue->next_buf_to_fill + 1) %
3830 QDIO_MAX_BUFFERS_PER_Q;
3831 buffer = queue->bufs[queue->next_buf_to_fill];
3833 /* We stepped forward, so sanity-check again: */
3834 if (atomic_read(&buffer->state) !=
3835 QETH_QDIO_BUF_EMPTY) {
3836 qeth_flush_buffers(queue, start_index,
3838 atomic_set(&queue->state,
3839 QETH_OUT_Q_UNLOCKED);
3846 if (buffer->next_element_to_fill == 0 &&
3847 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3848 /* If a TX completion happens right _here_ and misses to wake
3849 * the txq, then our re-check below will catch the race.
3851 QETH_TXQ_STAT_INC(queue, stopped);
3852 netif_tx_stop_queue(txq);
3856 flush_count += qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len,
3859 qeth_flush_buffers(queue, start_index, flush_count);
3860 else if (!atomic_read(&queue->set_pci_flags_count))
3861 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3863 * queue->state will go from LOCKED -> UNLOCKED or from
3864 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3865 * (switch packing state or flush buffer to get another pci flag out).
3866 * In that case we will enter this loop
3868 while (atomic_dec_return(&queue->state)) {
3869 start_index = queue->next_buf_to_fill;
3870 /* check if we can go back to non-packing state */
3871 tmp = qeth_switch_to_nonpacking_if_needed(queue);
3873 * check if we need to flush a packing buffer to get a pci
3874 * flag out on the queue
3876 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
3877 tmp = qeth_prep_flush_pack_buffer(queue);
3879 qeth_flush_buffers(queue, start_index, tmp);
3884 /* at this point the queue is UNLOCKED again */
3886 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
3888 if (stopped && !qeth_out_queue_is_full(queue))
3889 netif_tx_start_queue(txq);
3892 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3894 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
3895 unsigned int payload_len, struct sk_buff *skb,
3896 unsigned int proto_len)
3898 struct qeth_hdr_ext_tso *ext = &hdr->ext;
3900 ext->hdr_tot_len = sizeof(*ext);
3901 ext->imb_hdr_no = 1;
3903 ext->hdr_version = 1;
3905 ext->payload_len = payload_len;
3906 ext->mss = skb_shinfo(skb)->gso_size;
3907 ext->dg_hdr_len = proto_len;
3910 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
3911 struct qeth_qdio_out_q *queue, int ipv,
3912 void (*fill_header)(struct qeth_qdio_out_q *queue,
3913 struct qeth_hdr *hdr, struct sk_buff *skb,
3914 int ipv, unsigned int data_len))
3916 unsigned int proto_len, hw_hdr_len;
3917 unsigned int frame_len = skb->len;
3918 bool is_tso = skb_is_gso(skb);
3919 unsigned int data_offset = 0;
3920 struct qeth_hdr *hdr = NULL;
3921 unsigned int hd_len = 0;
3922 unsigned int elements;
3927 hw_hdr_len = sizeof(struct qeth_hdr_tso);
3928 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3930 hw_hdr_len = sizeof(struct qeth_hdr);
3931 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
3934 rc = skb_cow_head(skb, hw_hdr_len);
3938 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
3942 if (is_tso || !push_len) {
3943 /* HW header needs its own buffer element. */
3944 hd_len = hw_hdr_len + proto_len;
3945 data_offset = push_len + proto_len;
3947 memset(hdr, 0, hw_hdr_len);
3948 fill_header(queue, hdr, skb, ipv, frame_len);
3950 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
3951 frame_len - proto_len, skb, proto_len);
3953 is_sg = skb_is_nonlinear(skb);
3955 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
3958 /* TODO: drop skb_orphan() once TX completion is fast enough */
3960 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
3965 QETH_TXQ_STAT_ADD(queue, buf_elements, elements);
3967 QETH_TXQ_STAT_INC(queue, skbs_sg);
3969 QETH_TXQ_STAT_INC(queue, skbs_tso);
3970 QETH_TXQ_STAT_ADD(queue, tso_bytes, frame_len);
3974 kmem_cache_free(qeth_core_header_cache, hdr);
3978 EXPORT_SYMBOL_GPL(qeth_xmit);
3980 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
3981 struct qeth_reply *reply, unsigned long data)
3983 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3984 struct qeth_ipacmd_setadpparms *setparms;
3986 QETH_CARD_TEXT(card, 4, "prmadpcb");
3988 setparms = &(cmd->data.setadapterparms);
3989 if (qeth_setadpparms_inspect_rc(cmd)) {
3990 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
3991 setparms->data.mode = SET_PROMISC_MODE_OFF;
3993 card->info.promisc_mode = setparms->data.mode;
3994 return (cmd->hdr.return_code) ? -EIO : 0;
3997 void qeth_setadp_promisc_mode(struct qeth_card *card)
3999 enum qeth_ipa_promisc_modes mode;
4000 struct net_device *dev = card->dev;
4001 struct qeth_cmd_buffer *iob;
4002 struct qeth_ipa_cmd *cmd;
4004 QETH_CARD_TEXT(card, 4, "setprom");
4006 if (((dev->flags & IFF_PROMISC) &&
4007 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4008 (!(dev->flags & IFF_PROMISC) &&
4009 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4011 mode = SET_PROMISC_MODE_OFF;
4012 if (dev->flags & IFF_PROMISC)
4013 mode = SET_PROMISC_MODE_ON;
4014 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4016 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4017 SETADP_DATA_SIZEOF(mode));
4020 cmd = __ipa_cmd(iob);
4021 cmd->data.setadapterparms.data.mode = mode;
4022 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4024 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4026 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4027 struct qeth_reply *reply, unsigned long data)
4029 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4030 struct qeth_ipacmd_setadpparms *adp_cmd;
4032 QETH_CARD_TEXT(card, 4, "chgmaccb");
4033 if (qeth_setadpparms_inspect_rc(cmd))
4036 adp_cmd = &cmd->data.setadapterparms;
4037 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4038 return -EADDRNOTAVAIL;
4040 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4041 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4042 return -EADDRNOTAVAIL;
4044 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4048 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4051 struct qeth_cmd_buffer *iob;
4052 struct qeth_ipa_cmd *cmd;
4054 QETH_CARD_TEXT(card, 4, "chgmac");
4056 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4057 SETADP_DATA_SIZEOF(change_addr));
4060 cmd = __ipa_cmd(iob);
4061 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4062 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4063 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4064 card->dev->dev_addr);
4065 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4069 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4071 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4072 struct qeth_reply *reply, unsigned long data)
4074 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4075 struct qeth_set_access_ctrl *access_ctrl_req;
4076 int fallback = *(int *)reply->param;
4078 QETH_CARD_TEXT(card, 4, "setaccb");
4079 if (cmd->hdr.return_code)
4081 qeth_setadpparms_inspect_rc(cmd);
4083 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4084 QETH_CARD_TEXT_(card, 2, "rc=%d",
4085 cmd->data.setadapterparms.hdr.return_code);
4086 if (cmd->data.setadapterparms.hdr.return_code !=
4087 SET_ACCESS_CTRL_RC_SUCCESS)
4088 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4089 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4090 cmd->data.setadapterparms.hdr.return_code);
4091 switch (cmd->data.setadapterparms.hdr.return_code) {
4092 case SET_ACCESS_CTRL_RC_SUCCESS:
4093 if (card->options.isolation == ISOLATION_MODE_NONE) {
4094 dev_info(&card->gdev->dev,
4095 "QDIO data connection isolation is deactivated\n");
4097 dev_info(&card->gdev->dev,
4098 "QDIO data connection isolation is activated\n");
4101 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4102 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4105 card->options.isolation = card->options.prev_isolation;
4107 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4108 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4111 card->options.isolation = card->options.prev_isolation;
4113 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4114 dev_err(&card->gdev->dev, "Adapter does not "
4115 "support QDIO data connection isolation\n");
4117 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4118 dev_err(&card->gdev->dev,
4119 "Adapter is dedicated. "
4120 "QDIO data connection isolation not supported\n");
4122 card->options.isolation = card->options.prev_isolation;
4124 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4125 dev_err(&card->gdev->dev,
4126 "TSO does not permit QDIO data connection isolation\n");
4128 card->options.isolation = card->options.prev_isolation;
4130 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4131 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4132 "support reflective relay mode\n");
4134 card->options.isolation = card->options.prev_isolation;
4136 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4137 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4138 "enabled at the adjacent switch port");
4140 card->options.isolation = card->options.prev_isolation;
4142 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4143 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4144 "at the adjacent switch failed\n");
4147 /* this should never happen */
4149 card->options.isolation = card->options.prev_isolation;
4152 return (cmd->hdr.return_code) ? -EIO : 0;
4155 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4156 enum qeth_ipa_isolation_modes isolation, int fallback)
4159 struct qeth_cmd_buffer *iob;
4160 struct qeth_ipa_cmd *cmd;
4161 struct qeth_set_access_ctrl *access_ctrl_req;
4163 QETH_CARD_TEXT(card, 4, "setacctl");
4165 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4166 SETADP_DATA_SIZEOF(set_access_ctrl));
4169 cmd = __ipa_cmd(iob);
4170 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4171 access_ctrl_req->subcmd_code = isolation;
4173 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4175 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4179 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4183 QETH_CARD_TEXT(card, 4, "setactlo");
4185 if ((IS_OSD(card) || IS_OSX(card)) &&
4186 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4187 rc = qeth_setadpparms_set_access_ctrl(card,
4188 card->options.isolation, fallback);
4190 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4191 rc, CARD_DEVID(card));
4194 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4195 card->options.isolation = ISOLATION_MODE_NONE;
4197 dev_err(&card->gdev->dev, "Adapter does not "
4198 "support QDIO data connection isolation\n");
4203 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4205 void qeth_tx_timeout(struct net_device *dev)
4207 struct qeth_card *card;
4209 card = dev->ml_priv;
4210 QETH_CARD_TEXT(card, 4, "txtimeo");
4211 qeth_schedule_recovery(card);
4213 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4215 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4217 struct qeth_card *card = dev->ml_priv;
4221 case MII_BMCR: /* Basic mode control register */
4223 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4224 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4225 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4226 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4227 rc |= BMCR_SPEED100;
4229 case MII_BMSR: /* Basic mode status register */
4230 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4231 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4234 case MII_PHYSID1: /* PHYS ID 1 */
4235 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4237 rc = (rc >> 5) & 0xFFFF;
4239 case MII_PHYSID2: /* PHYS ID 2 */
4240 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4242 case MII_ADVERTISE: /* Advertisement control reg */
4245 case MII_LPA: /* Link partner ability reg */
4246 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4247 LPA_100BASE4 | LPA_LPACK;
4249 case MII_EXPANSION: /* Expansion register */
4251 case MII_DCOUNTER: /* disconnect counter */
4253 case MII_FCSCOUNTER: /* false carrier counter */
4255 case MII_NWAYTEST: /* N-way auto-neg test register */
4257 case MII_RERRCOUNTER: /* rx error counter */
4258 rc = card->stats.rx_errors;
4260 case MII_SREVISION: /* silicon revision */
4262 case MII_RESV1: /* reserved 1 */
4264 case MII_LBRERROR: /* loopback, rx, bypass error */
4266 case MII_PHYADDR: /* physical address */
4268 case MII_RESV2: /* reserved 2 */
4270 case MII_TPISTATUS: /* TPI status for 10mbps */
4272 case MII_NCONFIG: /* network interface config */
4280 static int qeth_snmp_command_cb(struct qeth_card *card,
4281 struct qeth_reply *reply, unsigned long sdata)
4283 struct qeth_ipa_cmd *cmd;
4284 struct qeth_arp_query_info *qinfo;
4285 unsigned char *data;
4289 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4291 cmd = (struct qeth_ipa_cmd *) sdata;
4292 data = (unsigned char *)((char *)cmd - reply->offset);
4293 qinfo = (struct qeth_arp_query_info *) reply->param;
4295 if (cmd->hdr.return_code) {
4296 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4299 if (cmd->data.setadapterparms.hdr.return_code) {
4300 cmd->hdr.return_code =
4301 cmd->data.setadapterparms.hdr.return_code;
4302 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4305 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4306 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4307 snmp_data = &cmd->data.setadapterparms.data.snmp;
4308 data_len -= offsetof(struct qeth_ipa_cmd,
4309 data.setadapterparms.data.snmp);
4311 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4312 data_len -= offsetof(struct qeth_ipa_cmd,
4313 data.setadapterparms.data.snmp.request);
4316 /* check if there is enough room in userspace */
4317 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4318 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4321 QETH_CARD_TEXT_(card, 4, "snore%i",
4322 cmd->data.setadapterparms.hdr.used_total);
4323 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4324 cmd->data.setadapterparms.hdr.seq_no);
4325 /*copy entries to user buffer*/
4326 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4327 qinfo->udata_offset += data_len;
4329 if (cmd->data.setadapterparms.hdr.seq_no <
4330 cmd->data.setadapterparms.hdr.used_total)
4335 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4337 struct qeth_snmp_ureq __user *ureq;
4338 struct qeth_cmd_buffer *iob;
4339 unsigned int req_len;
4340 struct qeth_arp_query_info qinfo = {0, };
4343 QETH_CARD_TEXT(card, 3, "snmpcmd");
4345 if (IS_VM_NIC(card))
4348 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4352 ureq = (struct qeth_snmp_ureq __user *) udata;
4353 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4354 get_user(req_len, &ureq->hdr.req_len))
4357 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4361 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4362 &ureq->cmd, req_len)) {
4367 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4372 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4374 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4376 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4377 CARD_DEVID(card), rc);
4379 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4387 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4388 struct qeth_reply *reply, unsigned long data)
4390 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4391 struct qeth_qoat_priv *priv;
4395 QETH_CARD_TEXT(card, 3, "qoatcb");
4396 if (qeth_setadpparms_inspect_rc(cmd))
4399 priv = (struct qeth_qoat_priv *)reply->param;
4400 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4401 resdata = (char *)data + 28;
4403 if (resdatalen > (priv->buffer_len - priv->response_len))
4406 memcpy((priv->buffer + priv->response_len), resdata,
4408 priv->response_len += resdatalen;
4410 if (cmd->data.setadapterparms.hdr.seq_no <
4411 cmd->data.setadapterparms.hdr.used_total)
4416 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4419 struct qeth_cmd_buffer *iob;
4420 struct qeth_ipa_cmd *cmd;
4421 struct qeth_query_oat *oat_req;
4422 struct qeth_query_oat_data oat_data;
4423 struct qeth_qoat_priv priv;
4426 QETH_CARD_TEXT(card, 3, "qoatcmd");
4428 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4433 if (copy_from_user(&oat_data, udata,
4434 sizeof(struct qeth_query_oat_data))) {
4439 priv.buffer_len = oat_data.buffer_len;
4440 priv.response_len = 0;
4441 priv.buffer = vzalloc(oat_data.buffer_len);
4447 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4448 SETADP_DATA_SIZEOF(query_oat));
4453 cmd = __ipa_cmd(iob);
4454 oat_req = &cmd->data.setadapterparms.data.query_oat;
4455 oat_req->subcmd_code = oat_data.command;
4457 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4460 if (is_compat_task())
4461 tmp = compat_ptr(oat_data.ptr);
4463 tmp = (void __user *)(unsigned long)oat_data.ptr;
4465 if (copy_to_user(tmp, priv.buffer,
4466 priv.response_len)) {
4471 oat_data.response_len = priv.response_len;
4473 if (copy_to_user(udata, &oat_data,
4474 sizeof(struct qeth_query_oat_data)))
4484 static int qeth_query_card_info_cb(struct qeth_card *card,
4485 struct qeth_reply *reply, unsigned long data)
4487 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4488 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4489 struct qeth_query_card_info *card_info;
4491 QETH_CARD_TEXT(card, 2, "qcrdincb");
4492 if (qeth_setadpparms_inspect_rc(cmd))
4495 card_info = &cmd->data.setadapterparms.data.card_info;
4496 carrier_info->card_type = card_info->card_type;
4497 carrier_info->port_mode = card_info->port_mode;
4498 carrier_info->port_speed = card_info->port_speed;
4502 int qeth_query_card_info(struct qeth_card *card,
4503 struct carrier_info *carrier_info)
4505 struct qeth_cmd_buffer *iob;
4507 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4508 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4510 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4513 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4514 (void *)carrier_info);
4518 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4519 * @card: pointer to a qeth_card
4522 * 0, if a MAC address has been set for the card's netdevice
4523 * a return code, for various error conditions
4525 int qeth_vm_request_mac(struct qeth_card *card)
4527 struct diag26c_mac_resp *response;
4528 struct diag26c_mac_req *request;
4529 struct ccw_dev_id id;
4532 QETH_CARD_TEXT(card, 2, "vmreqmac");
4534 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4535 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4536 if (!request || !response) {
4541 ccw_device_get_id(CARD_DDEV(card), &id);
4542 request->resp_buf_len = sizeof(*response);
4543 request->resp_version = DIAG26C_VERSION2;
4544 request->op_code = DIAG26C_GET_MAC;
4545 request->devno = id.devno;
4547 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4548 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4549 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4552 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4554 if (request->resp_buf_len < sizeof(*response) ||
4555 response->version != request->resp_version) {
4557 QETH_CARD_TEXT(card, 2, "badresp");
4558 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4559 sizeof(request->resp_buf_len));
4560 } else if (!is_valid_ether_addr(response->mac)) {
4562 QETH_CARD_TEXT(card, 2, "badmac");
4563 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4565 ether_addr_copy(card->dev->dev_addr, response->mac);
4573 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4575 static void qeth_determine_capabilities(struct qeth_card *card)
4578 struct ccw_device *ddev;
4579 int ddev_offline = 0;
4581 QETH_CARD_TEXT(card, 2, "detcapab");
4582 ddev = CARD_DDEV(card);
4583 if (!ddev->online) {
4585 rc = ccw_device_set_online(ddev);
4587 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4592 rc = qeth_read_conf_data(card);
4594 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4595 CARD_DEVID(card), rc);
4596 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4600 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4602 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4604 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4605 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4606 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4607 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4608 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
4609 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4610 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4611 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4612 dev_info(&card->gdev->dev,
4613 "Completion Queueing supported\n");
4615 card->options.cq = QETH_CQ_NOTAVAILABLE;
4620 if (ddev_offline == 1)
4621 ccw_device_set_offline(ddev);
4626 static void qeth_qdio_establish_cq(struct qeth_card *card,
4627 struct qdio_buffer **in_sbal_ptrs,
4628 void (**queue_start_poll)
4629 (struct ccw_device *, int,
4634 if (card->options.cq == QETH_CQ_ENABLED) {
4635 int offset = QDIO_MAX_BUFFERS_PER_Q *
4636 (card->qdio.no_in_queues - 1);
4637 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4638 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4639 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4642 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4646 static int qeth_qdio_establish(struct qeth_card *card)
4648 struct qdio_initialize init_data;
4649 char *qib_param_field;
4650 struct qdio_buffer **in_sbal_ptrs;
4651 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4652 struct qdio_buffer **out_sbal_ptrs;
4656 QETH_CARD_TEXT(card, 2, "qdioest");
4658 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4660 if (!qib_param_field) {
4662 goto out_free_nothing;
4665 qeth_create_qib_param_field(card, qib_param_field);
4666 qeth_create_qib_param_field_blkt(card, qib_param_field);
4668 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4671 if (!in_sbal_ptrs) {
4673 goto out_free_qib_param;
4675 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4676 in_sbal_ptrs[i] = (struct qdio_buffer *)
4677 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4680 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4682 if (!queue_start_poll) {
4684 goto out_free_in_sbals;
4686 for (i = 0; i < card->qdio.no_in_queues; ++i)
4687 queue_start_poll[i] = qeth_qdio_start_poll;
4689 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4692 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4695 if (!out_sbal_ptrs) {
4697 goto out_free_queue_start_poll;
4699 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4700 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4701 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4702 card->qdio.out_qs[i]->bufs[j]->buffer);
4705 memset(&init_data, 0, sizeof(struct qdio_initialize));
4706 init_data.cdev = CARD_DDEV(card);
4707 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4709 init_data.qib_param_field_format = 0;
4710 init_data.qib_param_field = qib_param_field;
4711 init_data.no_input_qs = card->qdio.no_in_queues;
4712 init_data.no_output_qs = card->qdio.no_out_queues;
4713 init_data.input_handler = qeth_qdio_input_handler;
4714 init_data.output_handler = qeth_qdio_output_handler;
4715 init_data.queue_start_poll_array = queue_start_poll;
4716 init_data.int_parm = (unsigned long) card;
4717 init_data.input_sbal_addr_array = in_sbal_ptrs;
4718 init_data.output_sbal_addr_array = out_sbal_ptrs;
4719 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4720 init_data.scan_threshold = IS_IQD(card) ? 1 : 32;
4722 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4723 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4724 rc = qdio_allocate(&init_data);
4726 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4729 rc = qdio_establish(&init_data);
4731 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4732 qdio_free(CARD_DDEV(card));
4736 switch (card->options.cq) {
4737 case QETH_CQ_ENABLED:
4738 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4740 case QETH_CQ_DISABLED:
4741 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4747 kfree(out_sbal_ptrs);
4748 out_free_queue_start_poll:
4749 kfree(queue_start_poll);
4751 kfree(in_sbal_ptrs);
4753 kfree(qib_param_field);
4758 static void qeth_core_free_card(struct qeth_card *card)
4760 QETH_CARD_TEXT(card, 2, "freecrd");
4761 qeth_clean_channel(&card->read);
4762 qeth_clean_channel(&card->write);
4763 qeth_clean_channel(&card->data);
4764 qeth_put_cmd(card->read_cmd);
4765 destroy_workqueue(card->event_wq);
4766 qeth_free_qdio_queues(card);
4767 unregister_service_level(&card->qeth_service_level);
4768 dev_set_drvdata(&card->gdev->dev, NULL);
4772 void qeth_trace_features(struct qeth_card *card)
4774 QETH_CARD_TEXT(card, 2, "features");
4775 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4776 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4777 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4778 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4779 sizeof(card->info.diagass_support));
4781 EXPORT_SYMBOL_GPL(qeth_trace_features);
4783 static struct ccw_device_id qeth_ids[] = {
4784 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4785 .driver_info = QETH_CARD_TYPE_OSD},
4786 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4787 .driver_info = QETH_CARD_TYPE_IQD},
4788 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4789 .driver_info = QETH_CARD_TYPE_OSN},
4790 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4791 .driver_info = QETH_CARD_TYPE_OSM},
4792 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4793 .driver_info = QETH_CARD_TYPE_OSX},
4796 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4798 static struct ccw_driver qeth_ccw_driver = {
4800 .owner = THIS_MODULE,
4804 .probe = ccwgroup_probe_ccwdev,
4805 .remove = ccwgroup_remove_ccwdev,
4808 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4813 QETH_CARD_TEXT(card, 2, "hrdsetup");
4814 atomic_set(&card->force_alloc_skb, 0);
4815 rc = qeth_update_from_chp_desc(card);
4820 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4822 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
4823 ccw_device_set_offline(CARD_DDEV(card));
4824 ccw_device_set_offline(CARD_WDEV(card));
4825 ccw_device_set_offline(CARD_RDEV(card));
4826 qdio_free(CARD_DDEV(card));
4827 rc = ccw_device_set_online(CARD_RDEV(card));
4830 rc = ccw_device_set_online(CARD_WDEV(card));
4833 rc = ccw_device_set_online(CARD_DDEV(card));
4837 if (rc == -ERESTARTSYS) {
4838 QETH_CARD_TEXT(card, 2, "break1");
4841 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4847 qeth_determine_capabilities(card);
4848 qeth_init_tokens(card);
4849 qeth_init_func_level(card);
4851 rc = qeth_idx_activate_read_channel(card);
4853 QETH_CARD_TEXT(card, 2, "break2");
4856 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4863 rc = qeth_idx_activate_write_channel(card);
4865 QETH_CARD_TEXT(card, 2, "break3");
4868 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4874 card->read_or_write_problem = 0;
4875 rc = qeth_mpc_initialize(card);
4877 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4881 rc = qeth_send_startlan(card);
4883 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4884 if (rc == -ENETDOWN) {
4885 dev_warn(&card->gdev->dev, "The LAN is offline\n");
4886 *carrier_ok = false;
4894 card->options.ipa4.supported_funcs = 0;
4895 card->options.ipa6.supported_funcs = 0;
4896 card->options.adp.supported_funcs = 0;
4897 card->options.sbp.supported_funcs = 0;
4898 card->info.diagass_support = 0;
4899 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
4902 if (qeth_is_supported(card, IPA_IPV6)) {
4903 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
4907 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
4908 rc = qeth_query_setadapterparms(card);
4910 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
4914 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
4915 rc = qeth_query_setdiagass(card);
4917 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
4923 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4924 "an error on the device\n");
4925 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
4926 CARD_DEVID(card), rc);
4929 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4931 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
4932 struct sk_buff *skb, int offset, int data_len)
4934 struct page *page = virt_to_page(element->addr);
4935 unsigned int next_frag;
4937 /* first fill the linear space */
4939 unsigned int linear = min(data_len, skb_tailroom(skb));
4941 skb_put_data(skb, element->addr + offset, linear);
4946 /* fall through to add page frag for remaining data */
4949 next_frag = skb_shinfo(skb)->nr_frags;
4951 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
4954 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
4956 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
4959 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4960 struct qeth_qdio_buffer *qethbuffer,
4961 struct qdio_buffer_element **__element, int *__offset,
4962 struct qeth_hdr **hdr)
4964 struct qdio_buffer_element *element = *__element;
4965 struct qdio_buffer *buffer = qethbuffer->buffer;
4966 int offset = *__offset;
4967 struct sk_buff *skb;
4974 /* qeth_hdr must not cross element boundaries */
4975 while (element->length < offset + sizeof(struct qeth_hdr)) {
4976 if (qeth_is_last_sbale(element))
4981 *hdr = element->addr + offset;
4983 offset += sizeof(struct qeth_hdr);
4984 switch ((*hdr)->hdr.l2.id) {
4985 case QETH_HEADER_TYPE_LAYER2:
4986 skb_len = (*hdr)->hdr.l2.pkt_length;
4988 case QETH_HEADER_TYPE_LAYER3:
4989 skb_len = (*hdr)->hdr.l3.length;
4990 headroom = ETH_HLEN;
4992 case QETH_HEADER_TYPE_OSN:
4993 skb_len = (*hdr)->hdr.osn.pdu_length;
4994 headroom = sizeof(struct qeth_hdr);
5003 if (((skb_len >= card->options.rx_sg_cb) &&
5005 (!atomic_read(&card->force_alloc_skb))) ||
5006 (card->options.cq == QETH_CQ_ENABLED))
5009 if (use_rx_sg && qethbuffer->rx_skb) {
5010 /* QETH_CQ_ENABLED only: */
5011 skb = qethbuffer->rx_skb;
5012 qethbuffer->rx_skb = NULL;
5014 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5016 skb = napi_alloc_skb(&card->napi, linear + headroom);
5021 skb_reserve(skb, headroom);
5023 data_ptr = element->addr + offset;
5025 data_len = min(skb_len, (int)(element->length - offset));
5028 qeth_create_skb_frag(element, skb, offset,
5031 skb_put_data(skb, data_ptr, data_len);
5033 skb_len -= data_len;
5035 if (qeth_is_last_sbale(element)) {
5036 QETH_CARD_TEXT(card, 4, "unexeob");
5037 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5038 dev_kfree_skb_any(skb);
5039 QETH_CARD_STAT_INC(card, rx_errors);
5044 data_ptr = element->addr;
5049 *__element = element;
5052 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5053 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5054 skb_shinfo(skb)->nr_frags);
5058 if (net_ratelimit()) {
5059 QETH_CARD_TEXT(card, 2, "noskbmem");
5061 QETH_CARD_STAT_INC(card, rx_dropped);
5064 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5066 int qeth_poll(struct napi_struct *napi, int budget)
5068 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5070 struct qeth_qdio_buffer *buffer;
5072 int new_budget = budget;
5075 if (!card->rx.b_count) {
5076 card->rx.qdio_err = 0;
5077 card->rx.b_count = qdio_get_next_buffers(
5078 card->data.ccwdev, 0, &card->rx.b_index,
5079 &card->rx.qdio_err);
5080 if (card->rx.b_count <= 0) {
5081 card->rx.b_count = 0;
5084 card->rx.b_element =
5085 &card->qdio.in_q->bufs[card->rx.b_index]
5086 .buffer->element[0];
5087 card->rx.e_offset = 0;
5090 while (card->rx.b_count) {
5091 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5092 if (!(card->rx.qdio_err &&
5093 qeth_check_qdio_errors(card, buffer->buffer,
5094 card->rx.qdio_err, "qinerr")))
5096 card->discipline->process_rx_buffer(
5097 card, new_budget, &done);
5102 QETH_CARD_STAT_INC(card, rx_bufs);
5103 qeth_put_buffer_pool_entry(card,
5104 buffer->pool_entry);
5105 qeth_queue_input_buffer(card, card->rx.b_index);
5107 if (card->rx.b_count) {
5109 (card->rx.b_index + 1) %
5110 QDIO_MAX_BUFFERS_PER_Q;
5111 card->rx.b_element =
5113 ->bufs[card->rx.b_index]
5114 .buffer->element[0];
5115 card->rx.e_offset = 0;
5119 if (work_done >= budget)
5122 new_budget = budget - work_done;
5126 napi_complete_done(napi, work_done);
5127 if (qdio_start_irq(card->data.ccwdev, 0))
5128 napi_schedule(&card->napi);
5132 EXPORT_SYMBOL_GPL(qeth_poll);
5134 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5136 if (!cmd->hdr.return_code)
5137 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5138 return cmd->hdr.return_code;
5141 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5142 struct qeth_reply *reply,
5145 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5146 struct qeth_ipa_caps *caps = reply->param;
5148 if (qeth_setassparms_inspect_rc(cmd))
5151 caps->supported = cmd->data.setassparms.data.caps.supported;
5152 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5156 int qeth_setassparms_cb(struct qeth_card *card,
5157 struct qeth_reply *reply, unsigned long data)
5159 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5161 QETH_CARD_TEXT(card, 4, "defadpcb");
5163 if (cmd->hdr.return_code)
5166 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5167 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5168 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5169 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5170 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5173 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5175 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5176 enum qeth_ipa_funcs ipa_func,
5178 unsigned int data_length,
5179 enum qeth_prot_versions prot)
5181 struct qeth_ipacmd_setassparms *setassparms;
5182 struct qeth_ipacmd_setassparms_hdr *hdr;
5183 struct qeth_cmd_buffer *iob;
5185 QETH_CARD_TEXT(card, 4, "getasscm");
5186 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5188 offsetof(struct qeth_ipacmd_setassparms,
5193 setassparms = &__ipa_cmd(iob)->data.setassparms;
5194 setassparms->assist_no = ipa_func;
5196 hdr = &setassparms->hdr;
5197 hdr->length = sizeof(*hdr) + data_length;
5198 hdr->command_code = cmd_code;
5201 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5203 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5204 enum qeth_ipa_funcs ipa_func,
5205 u16 cmd_code, u32 *data,
5206 enum qeth_prot_versions prot)
5208 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
5209 struct qeth_cmd_buffer *iob;
5211 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5212 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5217 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
5218 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
5220 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5222 static void qeth_unregister_dbf_views(void)
5225 for (x = 0; x < QETH_DBF_INFOS; x++) {
5226 debug_unregister(qeth_dbf[x].id);
5227 qeth_dbf[x].id = NULL;
5231 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5233 char dbf_txt_buf[32];
5236 if (!debug_level_enabled(id, level))
5238 va_start(args, fmt);
5239 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5241 debug_text_event(id, level, dbf_txt_buf);
5243 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5245 static int qeth_register_dbf_views(void)
5250 for (x = 0; x < QETH_DBF_INFOS; x++) {
5251 /* register the areas */
5252 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5256 if (qeth_dbf[x].id == NULL) {
5257 qeth_unregister_dbf_views();
5261 /* register a view */
5262 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5264 qeth_unregister_dbf_views();
5268 /* set a passing level */
5269 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5275 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
5277 int qeth_core_load_discipline(struct qeth_card *card,
5278 enum qeth_discipline_id discipline)
5280 mutex_lock(&qeth_mod_mutex);
5281 switch (discipline) {
5282 case QETH_DISCIPLINE_LAYER3:
5283 card->discipline = try_then_request_module(
5284 symbol_get(qeth_l3_discipline), "qeth_l3");
5286 case QETH_DISCIPLINE_LAYER2:
5287 card->discipline = try_then_request_module(
5288 symbol_get(qeth_l2_discipline), "qeth_l2");
5293 mutex_unlock(&qeth_mod_mutex);
5295 if (!card->discipline) {
5296 dev_err(&card->gdev->dev, "There is no kernel module to "
5297 "support discipline %d\n", discipline);
5301 card->options.layer = discipline;
5305 void qeth_core_free_discipline(struct qeth_card *card)
5307 if (IS_LAYER2(card))
5308 symbol_put(qeth_l2_discipline);
5310 symbol_put(qeth_l3_discipline);
5311 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5312 card->discipline = NULL;
5315 const struct device_type qeth_generic_devtype = {
5316 .name = "qeth_generic",
5317 .groups = qeth_generic_attr_groups,
5319 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5321 static const struct device_type qeth_osn_devtype = {
5323 .groups = qeth_osn_attr_groups,
5326 #define DBF_NAME_LEN 20
5328 struct qeth_dbf_entry {
5329 char dbf_name[DBF_NAME_LEN];
5330 debug_info_t *dbf_info;
5331 struct list_head dbf_list;
5334 static LIST_HEAD(qeth_dbf_list);
5335 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5337 static debug_info_t *qeth_get_dbf_entry(char *name)
5339 struct qeth_dbf_entry *entry;
5340 debug_info_t *rc = NULL;
5342 mutex_lock(&qeth_dbf_list_mutex);
5343 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5344 if (strcmp(entry->dbf_name, name) == 0) {
5345 rc = entry->dbf_info;
5349 mutex_unlock(&qeth_dbf_list_mutex);
5353 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5355 struct qeth_dbf_entry *new_entry;
5357 card->debug = debug_register(name, 2, 1, 8);
5359 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5362 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5364 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5367 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5368 new_entry->dbf_info = card->debug;
5369 mutex_lock(&qeth_dbf_list_mutex);
5370 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5371 mutex_unlock(&qeth_dbf_list_mutex);
5376 debug_unregister(card->debug);
5381 static void qeth_clear_dbf_list(void)
5383 struct qeth_dbf_entry *entry, *tmp;
5385 mutex_lock(&qeth_dbf_list_mutex);
5386 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5387 list_del(&entry->dbf_list);
5388 debug_unregister(entry->dbf_info);
5391 mutex_unlock(&qeth_dbf_list_mutex);
5394 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5396 struct net_device *dev;
5398 switch (card->info.type) {
5399 case QETH_CARD_TYPE_IQD:
5400 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5401 ether_setup, QETH_MAX_QUEUES, 1);
5403 case QETH_CARD_TYPE_OSM:
5404 dev = alloc_etherdev(0);
5406 case QETH_CARD_TYPE_OSN:
5407 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5410 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
5416 dev->ml_priv = card;
5417 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5418 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5419 /* initialized when device first goes online: */
5422 SET_NETDEV_DEV(dev, &card->gdev->dev);
5423 netif_carrier_off(dev);
5426 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5428 dev->ethtool_ops = &qeth_ethtool_ops;
5429 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5430 dev->hw_features |= NETIF_F_SG;
5431 dev->vlan_features |= NETIF_F_SG;
5433 dev->features |= NETIF_F_SG;
5434 if (netif_set_real_num_tx_queues(dev,
5435 QETH_IQD_MIN_TXQ)) {
5445 struct net_device *qeth_clone_netdev(struct net_device *orig)
5447 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5452 clone->dev_port = orig->dev_port;
5456 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5458 struct qeth_card *card;
5461 enum qeth_discipline_id enforced_disc;
5462 char dbf_name[DBF_NAME_LEN];
5464 QETH_DBF_TEXT(SETUP, 2, "probedev");
5467 if (!get_device(dev))
5470 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5472 card = qeth_alloc_card(gdev);
5474 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5479 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5480 dev_name(&gdev->dev));
5481 card->debug = qeth_get_dbf_entry(dbf_name);
5483 rc = qeth_add_dbf_entry(card, dbf_name);
5488 qeth_setup_card(card);
5489 card->dev = qeth_alloc_netdev(card);
5495 card->qdio.no_out_queues = card->dev->num_tx_queues;
5496 rc = qeth_update_from_chp_desc(card);
5499 qeth_determine_capabilities(card);
5500 qeth_set_blkt_defaults(card);
5502 enforced_disc = qeth_enforce_discipline(card);
5503 switch (enforced_disc) {
5504 case QETH_DISCIPLINE_UNDETERMINED:
5505 gdev->dev.type = &qeth_generic_devtype;
5508 card->info.layer_enforced = true;
5509 rc = qeth_core_load_discipline(card, enforced_disc);
5513 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
5514 card->discipline->devtype;
5515 rc = card->discipline->setup(card->gdev);
5524 qeth_core_free_discipline(card);
5527 free_netdev(card->dev);
5529 qeth_core_free_card(card);
5535 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5537 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5539 QETH_CARD_TEXT(card, 2, "removedv");
5541 if (card->discipline) {
5542 card->discipline->remove(gdev);
5543 qeth_core_free_discipline(card);
5546 free_netdev(card->dev);
5547 qeth_core_free_card(card);
5548 put_device(&gdev->dev);
5551 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5553 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5555 enum qeth_discipline_id def_discipline;
5557 if (!card->discipline) {
5558 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
5559 QETH_DISCIPLINE_LAYER2;
5560 rc = qeth_core_load_discipline(card, def_discipline);
5563 rc = card->discipline->setup(card->gdev);
5565 qeth_core_free_discipline(card);
5569 rc = card->discipline->set_online(gdev);
5574 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5576 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5577 return card->discipline->set_offline(gdev);
5580 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5582 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5583 qeth_set_allowed_threads(card, 0, 1);
5584 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5585 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5586 qeth_qdio_clear_card(card, 0);
5587 qeth_drain_output_queues(card);
5588 qdio_free(CARD_DDEV(card));
5591 static int qeth_suspend(struct ccwgroup_device *gdev)
5593 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5595 qeth_set_allowed_threads(card, 0, 1);
5596 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
5597 if (gdev->state == CCWGROUP_OFFLINE)
5600 card->discipline->set_offline(gdev);
5604 static int qeth_resume(struct ccwgroup_device *gdev)
5606 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5609 rc = card->discipline->set_online(gdev);
5611 qeth_set_allowed_threads(card, 0xffffffff, 0);
5613 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
5617 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5622 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5625 return err ? err : count;
5627 static DRIVER_ATTR_WO(group);
5629 static struct attribute *qeth_drv_attrs[] = {
5630 &driver_attr_group.attr,
5633 static struct attribute_group qeth_drv_attr_group = {
5634 .attrs = qeth_drv_attrs,
5636 static const struct attribute_group *qeth_drv_attr_groups[] = {
5637 &qeth_drv_attr_group,
5641 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5643 .groups = qeth_drv_attr_groups,
5644 .owner = THIS_MODULE,
5647 .ccw_driver = &qeth_ccw_driver,
5648 .setup = qeth_core_probe_device,
5649 .remove = qeth_core_remove_device,
5650 .set_online = qeth_core_set_online,
5651 .set_offline = qeth_core_set_offline,
5652 .shutdown = qeth_core_shutdown,
5655 .freeze = qeth_suspend,
5656 .thaw = qeth_resume,
5657 .restore = qeth_resume,
5660 struct qeth_card *qeth_get_card_by_busid(char *bus_id)
5662 struct ccwgroup_device *gdev;
5663 struct qeth_card *card;
5665 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
5669 card = dev_get_drvdata(&gdev->dev);
5670 put_device(&gdev->dev);
5673 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
5675 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5677 struct qeth_card *card = dev->ml_priv;
5678 struct mii_ioctl_data *mii_data;
5685 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5686 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5688 case SIOC_QETH_GET_CARD_TYPE:
5689 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
5694 mii_data = if_mii(rq);
5695 mii_data->phy_id = 0;
5698 mii_data = if_mii(rq);
5699 if (mii_data->phy_id != 0)
5702 mii_data->val_out = qeth_mdio_read(dev,
5703 mii_data->phy_id, mii_data->reg_num);
5705 case SIOC_QETH_QUERY_OAT:
5706 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5709 if (card->discipline->do_ioctl)
5710 rc = card->discipline->do_ioctl(dev, rq, cmd);
5715 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5718 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5720 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
5723 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5724 u32 *features = reply->param;
5726 if (qeth_setassparms_inspect_rc(cmd))
5729 *features = cmd->data.setassparms.data.flags_32bit;
5733 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5734 enum qeth_prot_versions prot)
5736 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
5740 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5741 enum qeth_prot_versions prot)
5743 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
5744 struct qeth_cmd_buffer *iob;
5745 struct qeth_ipa_caps caps;
5749 /* some L3 HW requires combined L3+L4 csum offload: */
5750 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
5751 cstype == IPA_OUTBOUND_CHECKSUM)
5752 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
5754 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
5759 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
5763 if ((required_features & features) != required_features) {
5764 qeth_set_csum_off(card, cstype, prot);
5768 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
5769 SETASS_DATA_SIZEOF(flags_32bit),
5772 qeth_set_csum_off(card, cstype, prot);
5776 if (features & QETH_IPA_CHECKSUM_LP2LP)
5777 required_features |= QETH_IPA_CHECKSUM_LP2LP;
5778 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
5779 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5781 qeth_set_csum_off(card, cstype, prot);
5785 if (!qeth_ipa_caps_supported(&caps, required_features) ||
5786 !qeth_ipa_caps_enabled(&caps, required_features)) {
5787 qeth_set_csum_off(card, cstype, prot);
5791 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
5792 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
5793 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
5794 cstype == IPA_OUTBOUND_CHECKSUM)
5795 dev_warn(&card->gdev->dev,
5796 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
5797 QETH_CARD_IFNAME(card));
5801 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
5802 enum qeth_prot_versions prot)
5804 return on ? qeth_set_csum_on(card, cstype, prot) :
5805 qeth_set_csum_off(card, cstype, prot);
5808 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
5811 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5812 struct qeth_tso_start_data *tso_data = reply->param;
5814 if (qeth_setassparms_inspect_rc(cmd))
5817 tso_data->mss = cmd->data.setassparms.data.tso.mss;
5818 tso_data->supported = cmd->data.setassparms.data.tso.supported;
5822 static int qeth_set_tso_off(struct qeth_card *card,
5823 enum qeth_prot_versions prot)
5825 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
5826 IPA_CMD_ASS_STOP, NULL, prot);
5829 static int qeth_set_tso_on(struct qeth_card *card,
5830 enum qeth_prot_versions prot)
5832 struct qeth_tso_start_data tso_data;
5833 struct qeth_cmd_buffer *iob;
5834 struct qeth_ipa_caps caps;
5837 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
5838 IPA_CMD_ASS_START, 0, prot);
5842 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
5846 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
5847 qeth_set_tso_off(card, prot);
5851 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
5853 SETASS_DATA_SIZEOF(caps), prot);
5855 qeth_set_tso_off(card, prot);
5859 /* enable TSO capability */
5860 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
5861 QETH_IPA_LARGE_SEND_TCP;
5862 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5864 qeth_set_tso_off(card, prot);
5868 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
5869 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
5870 qeth_set_tso_off(card, prot);
5874 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
5879 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
5880 enum qeth_prot_versions prot)
5882 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
5885 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
5887 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
5890 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
5891 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
5893 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
5894 /* no/one Offload Assist available, so the rc is trivial */
5897 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
5901 /* enable: success if any Assist is active */
5902 return (rc_ipv6) ? rc_ipv4 : 0;
5904 /* disable: failure if any Assist is still active */
5905 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
5909 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
5910 * @dev: a net_device
5912 void qeth_enable_hw_features(struct net_device *dev)
5914 struct qeth_card *card = dev->ml_priv;
5915 netdev_features_t features;
5917 features = dev->features;
5918 /* force-off any feature that might need an IPA sequence.
5919 * netdev_update_features() will restart them.
5921 dev->features &= ~dev->hw_features;
5922 /* toggle VLAN filter, so that VIDs are re-programmed: */
5923 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
5924 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
5925 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
5927 netdev_update_features(dev);
5928 if (features != dev->features)
5929 dev_warn(&card->gdev->dev,
5930 "Device recovery failed to restore all offload features\n");
5932 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
5934 int qeth_set_features(struct net_device *dev, netdev_features_t features)
5936 struct qeth_card *card = dev->ml_priv;
5937 netdev_features_t changed = dev->features ^ features;
5940 QETH_CARD_TEXT(card, 2, "setfeat");
5941 QETH_CARD_HEX(card, 2, &features, sizeof(features));
5943 if ((changed & NETIF_F_IP_CSUM)) {
5944 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
5945 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
5947 changed ^= NETIF_F_IP_CSUM;
5949 if (changed & NETIF_F_IPV6_CSUM) {
5950 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
5951 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
5953 changed ^= NETIF_F_IPV6_CSUM;
5955 if (changed & NETIF_F_RXCSUM) {
5956 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
5958 changed ^= NETIF_F_RXCSUM;
5960 if (changed & NETIF_F_TSO) {
5961 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
5964 changed ^= NETIF_F_TSO;
5966 if (changed & NETIF_F_TSO6) {
5967 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
5970 changed ^= NETIF_F_TSO6;
5973 /* everything changed successfully? */
5974 if ((dev->features ^ features) == changed)
5976 /* something went wrong. save changed features and return error */
5977 dev->features ^= changed;
5980 EXPORT_SYMBOL_GPL(qeth_set_features);
5982 netdev_features_t qeth_fix_features(struct net_device *dev,
5983 netdev_features_t features)
5985 struct qeth_card *card = dev->ml_priv;
5987 QETH_CARD_TEXT(card, 2, "fixfeat");
5988 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
5989 features &= ~NETIF_F_IP_CSUM;
5990 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
5991 features &= ~NETIF_F_IPV6_CSUM;
5992 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
5993 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
5994 features &= ~NETIF_F_RXCSUM;
5995 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
5996 features &= ~NETIF_F_TSO;
5997 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
5998 features &= ~NETIF_F_TSO6;
6000 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6003 EXPORT_SYMBOL_GPL(qeth_fix_features);
6005 netdev_features_t qeth_features_check(struct sk_buff *skb,
6006 struct net_device *dev,
6007 netdev_features_t features)
6009 /* GSO segmentation builds skbs with
6010 * a (small) linear part for the headers, and
6011 * page frags for the data.
6012 * Compared to a linear skb, the header-only part consumes an
6013 * additional buffer element. This reduces buffer utilization, and
6014 * hurts throughput. So compress small segments into one element.
6016 if (netif_needs_gso(skb, features)) {
6017 /* match skb_segment(): */
6018 unsigned int doffset = skb->data - skb_mac_header(skb);
6019 unsigned int hsize = skb_shinfo(skb)->gso_size;
6020 unsigned int hroom = skb_headroom(skb);
6022 /* linearize only if resulting skb allocations are order-0: */
6023 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6024 features &= ~NETIF_F_SG;
6027 return vlan_features_check(skb, features);
6029 EXPORT_SYMBOL_GPL(qeth_features_check);
6031 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6033 struct qeth_card *card = dev->ml_priv;
6034 struct qeth_qdio_out_q *queue;
6037 QETH_CARD_TEXT(card, 5, "getstat");
6039 stats->rx_packets = card->stats.rx_packets;
6040 stats->rx_bytes = card->stats.rx_bytes;
6041 stats->rx_errors = card->stats.rx_errors;
6042 stats->rx_dropped = card->stats.rx_dropped;
6043 stats->multicast = card->stats.rx_multicast;
6045 for (i = 0; i < card->qdio.no_out_queues; i++) {
6046 queue = card->qdio.out_qs[i];
6048 stats->tx_packets += queue->stats.tx_packets;
6049 stats->tx_bytes += queue->stats.tx_bytes;
6050 stats->tx_errors += queue->stats.tx_errors;
6051 stats->tx_dropped += queue->stats.tx_dropped;
6054 EXPORT_SYMBOL_GPL(qeth_get_stats64);
6056 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6057 u8 cast_type, struct net_device *sb_dev)
6059 if (cast_type != RTN_UNICAST)
6060 return QETH_IQD_MCAST_TXQ;
6061 return QETH_IQD_MIN_UCAST_TXQ;
6063 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6065 int qeth_open(struct net_device *dev)
6067 struct qeth_card *card = dev->ml_priv;
6069 QETH_CARD_TEXT(card, 4, "qethopen");
6071 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6074 card->data.state = CH_STATE_UP;
6075 netif_tx_start_all_queues(dev);
6077 napi_enable(&card->napi);
6079 napi_schedule(&card->napi);
6080 /* kick-start the NAPI softirq: */
6084 EXPORT_SYMBOL_GPL(qeth_open);
6086 int qeth_stop(struct net_device *dev)
6088 struct qeth_card *card = dev->ml_priv;
6090 QETH_CARD_TEXT(card, 4, "qethstop");
6091 netif_tx_disable(dev);
6092 napi_disable(&card->napi);
6095 EXPORT_SYMBOL_GPL(qeth_stop);
6097 static int __init qeth_core_init(void)
6101 pr_info("loading core functions\n");
6103 rc = qeth_register_dbf_views();
6106 qeth_core_root_dev = root_device_register("qeth");
6107 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6110 qeth_core_header_cache =
6111 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6112 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6114 if (!qeth_core_header_cache) {
6118 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6119 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6120 if (!qeth_qdio_outbuf_cache) {
6124 rc = ccw_driver_register(&qeth_ccw_driver);
6127 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6134 ccw_driver_unregister(&qeth_ccw_driver);
6136 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6138 kmem_cache_destroy(qeth_core_header_cache);
6140 root_device_unregister(qeth_core_root_dev);
6142 qeth_unregister_dbf_views();
6144 pr_err("Initializing the qeth device driver failed\n");
6148 static void __exit qeth_core_exit(void)
6150 qeth_clear_dbf_list();
6151 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6152 ccw_driver_unregister(&qeth_ccw_driver);
6153 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6154 kmem_cache_destroy(qeth_core_header_cache);
6155 root_device_unregister(qeth_core_root_dev);
6156 qeth_unregister_dbf_views();
6157 pr_info("core functions removed\n");
6160 module_init(qeth_core_init);
6161 module_exit(qeth_core_exit);
6162 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6163 MODULE_DESCRIPTION("qeth core functions");
6164 MODULE_LICENSE("GPL");