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);
547 spin_lock_init(&reply->lock);
552 static void qeth_get_reply(struct qeth_reply *reply)
554 refcount_inc(&reply->refcnt);
557 static void qeth_put_reply(struct qeth_reply *reply)
559 if (refcount_dec_and_test(&reply->refcnt))
563 static void qeth_enqueue_reply(struct qeth_card *card, struct qeth_reply *reply)
565 spin_lock_irq(&card->lock);
566 list_add_tail(&reply->list, &card->cmd_waiter_list);
567 spin_unlock_irq(&card->lock);
570 static void qeth_dequeue_reply(struct qeth_card *card, struct qeth_reply *reply)
572 spin_lock_irq(&card->lock);
573 list_del(&reply->list);
574 spin_unlock_irq(&card->lock);
577 void qeth_notify_reply(struct qeth_reply *reply, int reason)
580 complete(&reply->received);
582 EXPORT_SYMBOL_GPL(qeth_notify_reply);
584 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
585 struct qeth_card *card)
587 const char *ipa_name;
588 int com = cmd->hdr.command;
589 ipa_name = qeth_get_ipa_cmd_name(com);
592 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
593 ipa_name, com, CARD_DEVID(card), rc,
594 qeth_get_ipa_msg(rc));
596 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
597 ipa_name, com, CARD_DEVID(card));
600 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
601 struct qeth_ipa_cmd *cmd)
603 QETH_CARD_TEXT(card, 5, "chkipad");
605 if (IS_IPA_REPLY(cmd)) {
606 if (cmd->hdr.command != IPA_CMD_SETCCID &&
607 cmd->hdr.command != IPA_CMD_DELCCID &&
608 cmd->hdr.command != IPA_CMD_MODCCID &&
609 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
610 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
614 /* handle unsolicited event: */
615 switch (cmd->hdr.command) {
616 case IPA_CMD_STOPLAN:
617 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
618 dev_err(&card->gdev->dev,
619 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
620 QETH_CARD_IFNAME(card));
621 schedule_work(&card->close_dev_work);
623 dev_warn(&card->gdev->dev,
624 "The link for interface %s on CHPID 0x%X failed\n",
625 QETH_CARD_IFNAME(card), card->info.chpid);
626 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
627 netif_carrier_off(card->dev);
630 case IPA_CMD_STARTLAN:
631 dev_info(&card->gdev->dev,
632 "The link for %s on CHPID 0x%X has been restored\n",
633 QETH_CARD_IFNAME(card), card->info.chpid);
634 if (card->info.hwtrap)
635 card->info.hwtrap = 2;
636 qeth_schedule_recovery(card);
638 case IPA_CMD_SETBRIDGEPORT_IQD:
639 case IPA_CMD_SETBRIDGEPORT_OSA:
640 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
641 if (card->discipline->control_event_handler(card, cmd))
644 case IPA_CMD_MODCCID:
646 case IPA_CMD_REGISTER_LOCAL_ADDR:
647 QETH_CARD_TEXT(card, 3, "irla");
649 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
650 QETH_CARD_TEXT(card, 3, "urla");
653 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
658 void qeth_clear_ipacmd_list(struct qeth_card *card)
660 struct qeth_reply *reply;
663 QETH_CARD_TEXT(card, 4, "clipalst");
665 spin_lock_irqsave(&card->lock, flags);
666 list_for_each_entry(reply, &card->cmd_waiter_list, list)
667 qeth_notify_reply(reply, -EIO);
668 spin_unlock_irqrestore(&card->lock, flags);
670 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
672 static int qeth_check_idx_response(struct qeth_card *card,
673 unsigned char *buffer)
675 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
676 if ((buffer[2] & 0xc0) == 0xc0) {
677 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
679 QETH_CARD_TEXT(card, 2, "ckidxres");
680 QETH_CARD_TEXT(card, 2, " idxterm");
681 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
682 if (buffer[4] == 0xf6) {
683 dev_err(&card->gdev->dev,
684 "The qeth device is not configured "
685 "for the OSI layer required by z/VM\n");
693 void qeth_put_cmd(struct qeth_cmd_buffer *iob)
695 if (refcount_dec_and_test(&iob->ref_count)) {
697 qeth_put_reply(iob->reply);
702 EXPORT_SYMBOL_GPL(qeth_put_cmd);
704 static void qeth_release_buffer_cb(struct qeth_card *card,
705 struct qeth_cmd_buffer *iob)
710 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
712 struct qeth_reply *reply = iob->reply;
715 qeth_notify_reply(reply, rc);
719 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
720 unsigned int length, unsigned int ccws,
723 struct qeth_cmd_buffer *iob;
725 if (length > QETH_BUFSIZE)
728 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
732 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
733 GFP_KERNEL | GFP_DMA);
739 refcount_set(&iob->ref_count, 1);
740 iob->channel = channel;
741 iob->timeout = timeout;
742 iob->length = length;
745 EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
747 static void qeth_issue_next_read_cb(struct qeth_card *card,
748 struct qeth_cmd_buffer *iob)
750 struct qeth_ipa_cmd *cmd = NULL;
751 struct qeth_reply *reply = NULL;
752 struct qeth_reply *r;
756 QETH_CARD_TEXT(card, 4, "sndctlcb");
757 rc = qeth_check_idx_response(card, iob->data);
762 qeth_clear_ipacmd_list(card);
763 qeth_schedule_recovery(card);
769 if (IS_IPA(iob->data)) {
770 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
771 cmd = qeth_check_ipa_data(card, cmd);
774 if (IS_OSN(card) && card->osn_info.assist_cb &&
775 cmd->hdr.command != IPA_CMD_STARTLAN) {
776 card->osn_info.assist_cb(card->dev, cmd);
780 /* non-IPA commands should only flow during initialization */
781 if (card->state != CARD_STATE_DOWN)
785 /* match against pending cmd requests */
786 spin_lock_irqsave(&card->lock, flags);
787 list_for_each_entry(r, &card->cmd_waiter_list, list) {
788 if ((r->seqno == QETH_IDX_COMMAND_SEQNO) ||
789 (cmd && (r->seqno == cmd->hdr.seqno))) {
791 /* take the object outside the lock */
792 qeth_get_reply(reply);
796 spin_unlock_irqrestore(&card->lock, flags);
801 if (!reply->callback) {
806 spin_lock_irqsave(&reply->lock, flags);
808 /* Bail out when the requestor has already left: */
812 reply->offset = (u16)((char *)cmd - (char *)iob->data);
813 rc = reply->callback(card, reply, (unsigned long)cmd);
815 rc = reply->callback(card, reply, (unsigned long)iob);
818 spin_unlock_irqrestore(&reply->lock, flags);
822 qeth_notify_reply(reply, rc);
823 qeth_put_reply(reply);
826 memcpy(&card->seqno.pdu_hdr_ack,
827 QETH_PDU_HEADER_SEQ_NO(iob->data),
830 __qeth_issue_next_read(card);
833 static int qeth_set_thread_start_bit(struct qeth_card *card,
834 unsigned long thread)
838 spin_lock_irqsave(&card->thread_mask_lock, flags);
839 if (!(card->thread_allowed_mask & thread) ||
840 (card->thread_start_mask & thread)) {
841 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
844 card->thread_start_mask |= thread;
845 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
849 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
853 spin_lock_irqsave(&card->thread_mask_lock, flags);
854 card->thread_start_mask &= ~thread;
855 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
856 wake_up(&card->wait_q);
858 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
860 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
864 spin_lock_irqsave(&card->thread_mask_lock, flags);
865 card->thread_running_mask &= ~thread;
866 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
867 wake_up_all(&card->wait_q);
869 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
871 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
876 spin_lock_irqsave(&card->thread_mask_lock, flags);
877 if (card->thread_start_mask & thread) {
878 if ((card->thread_allowed_mask & thread) &&
879 !(card->thread_running_mask & thread)) {
881 card->thread_start_mask &= ~thread;
882 card->thread_running_mask |= thread;
886 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
890 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
894 wait_event(card->wait_q,
895 (rc = __qeth_do_run_thread(card, thread)) >= 0);
898 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
900 void qeth_schedule_recovery(struct qeth_card *card)
902 QETH_CARD_TEXT(card, 2, "startrec");
903 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
904 schedule_work(&card->kernel_thread_starter);
906 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
908 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
914 sense = (char *) irb->ecw;
915 cstat = irb->scsw.cmd.cstat;
916 dstat = irb->scsw.cmd.dstat;
918 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
919 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
920 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
921 QETH_CARD_TEXT(card, 2, "CGENCHK");
922 dev_warn(&cdev->dev, "The qeth device driver "
923 "failed to recover an error on the device\n");
924 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
925 CCW_DEVID(cdev), dstat, cstat);
926 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
931 if (dstat & DEV_STAT_UNIT_CHECK) {
932 if (sense[SENSE_RESETTING_EVENT_BYTE] &
933 SENSE_RESETTING_EVENT_FLAG) {
934 QETH_CARD_TEXT(card, 2, "REVIND");
937 if (sense[SENSE_COMMAND_REJECT_BYTE] &
938 SENSE_COMMAND_REJECT_FLAG) {
939 QETH_CARD_TEXT(card, 2, "CMDREJi");
942 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
943 QETH_CARD_TEXT(card, 2, "AFFE");
946 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
947 QETH_CARD_TEXT(card, 2, "ZEROSEN");
950 QETH_CARD_TEXT(card, 2, "DGENCHK");
956 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
962 switch (PTR_ERR(irb)) {
964 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
966 QETH_CARD_TEXT(card, 2, "ckirberr");
967 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
970 dev_warn(&cdev->dev, "A hardware operation timed out"
972 QETH_CARD_TEXT(card, 2, "ckirberr");
973 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
976 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
977 PTR_ERR(irb), CCW_DEVID(cdev));
978 QETH_CARD_TEXT(card, 2, "ckirberr");
979 QETH_CARD_TEXT(card, 2, " rc???");
984 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
989 struct qeth_cmd_buffer *iob = NULL;
990 struct ccwgroup_device *gdev;
991 struct qeth_channel *channel;
992 struct qeth_card *card;
994 /* while we hold the ccwdev lock, this stays valid: */
995 gdev = dev_get_drvdata(&cdev->dev);
996 card = dev_get_drvdata(&gdev->dev);
1000 QETH_CARD_TEXT(card, 5, "irq");
1002 if (card->read.ccwdev == cdev) {
1003 channel = &card->read;
1004 QETH_CARD_TEXT(card, 5, "read");
1005 } else if (card->write.ccwdev == cdev) {
1006 channel = &card->write;
1007 QETH_CARD_TEXT(card, 5, "write");
1009 channel = &card->data;
1010 QETH_CARD_TEXT(card, 5, "data");
1013 if (qeth_intparm_is_iob(intparm))
1014 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1016 rc = qeth_check_irb_error(card, cdev, irb);
1018 /* IO was terminated, free its resources. */
1020 qeth_cancel_cmd(iob, rc);
1021 atomic_set(&channel->irq_pending, 0);
1022 wake_up(&card->wait_q);
1026 atomic_set(&channel->irq_pending, 0);
1028 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1029 channel->state = CH_STATE_STOPPED;
1031 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1032 channel->state = CH_STATE_HALTED;
1034 if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1035 QETH_CARD_TEXT(card, 6, "clrchpar");
1036 /* we don't have to handle this further */
1039 if (intparm == QETH_HALT_CHANNEL_PARM) {
1040 QETH_CARD_TEXT(card, 6, "hltchpar");
1041 /* we don't have to handle this further */
1045 cstat = irb->scsw.cmd.cstat;
1046 dstat = irb->scsw.cmd.dstat;
1048 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1049 (dstat & DEV_STAT_UNIT_CHECK) ||
1051 if (irb->esw.esw0.erw.cons) {
1052 dev_warn(&channel->ccwdev->dev,
1053 "The qeth device driver failed to recover "
1054 "an error on the device\n");
1055 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1056 CCW_DEVID(channel->ccwdev), cstat,
1058 print_hex_dump(KERN_WARNING, "qeth: irb ",
1059 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1060 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1061 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1064 rc = qeth_get_problem(card, cdev, irb);
1066 card->read_or_write_problem = 1;
1068 qeth_cancel_cmd(iob, rc);
1069 qeth_clear_ipacmd_list(card);
1070 qeth_schedule_recovery(card);
1075 if (iob && iob->callback)
1076 iob->callback(card, iob);
1079 wake_up(&card->wait_q);
1083 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1084 struct qeth_qdio_out_buffer *buf,
1085 enum iucv_tx_notify notification)
1087 struct sk_buff *skb;
1089 skb_queue_walk(&buf->skb_list, skb) {
1090 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1091 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1092 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1093 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1097 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1099 struct sk_buff *skb;
1101 /* release may never happen from within CQ tasklet scope */
1102 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1104 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1105 qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR);
1107 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL)
1111 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1112 struct qeth_qdio_out_buffer *buf)
1116 /* is PCI flag set on buffer? */
1117 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1118 atomic_dec(&queue->set_pci_flags_count);
1120 qeth_release_skbs(buf);
1122 for (i = 0; i < queue->max_elements; ++i) {
1123 if (buf->buffer->element[i].addr && buf->is_header[i])
1124 kmem_cache_free(qeth_core_header_cache,
1125 buf->buffer->element[i].addr);
1126 buf->is_header[i] = 0;
1129 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1130 buf->next_element_to_fill = 0;
1131 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1134 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1138 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1141 qeth_cleanup_handled_pending(q, j, 1);
1142 qeth_clear_output_buffer(q, q->bufs[j]);
1144 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1150 void qeth_drain_output_queues(struct qeth_card *card)
1154 QETH_CARD_TEXT(card, 2, "clearqdbf");
1155 /* clear outbound buffers to free skbs */
1156 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1157 if (card->qdio.out_qs[i])
1158 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1161 EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
1163 static void qeth_free_buffer_pool(struct qeth_card *card)
1165 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1167 list_for_each_entry_safe(pool_entry, tmp,
1168 &card->qdio.init_pool.entry_list, init_list){
1169 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1170 free_page((unsigned long)pool_entry->elements[i]);
1171 list_del(&pool_entry->init_list);
1176 static void qeth_clean_channel(struct qeth_channel *channel)
1178 struct ccw_device *cdev = channel->ccwdev;
1180 QETH_DBF_TEXT(SETUP, 2, "freech");
1182 spin_lock_irq(get_ccwdev_lock(cdev));
1183 cdev->handler = NULL;
1184 spin_unlock_irq(get_ccwdev_lock(cdev));
1187 static void qeth_setup_channel(struct qeth_channel *channel)
1189 struct ccw_device *cdev = channel->ccwdev;
1191 QETH_DBF_TEXT(SETUP, 2, "setupch");
1193 channel->state = CH_STATE_DOWN;
1194 atomic_set(&channel->irq_pending, 0);
1196 spin_lock_irq(get_ccwdev_lock(cdev));
1197 cdev->handler = qeth_irq;
1198 spin_unlock_irq(get_ccwdev_lock(cdev));
1201 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1203 unsigned int count = single ? 1 : card->dev->num_tx_queues;
1207 rc = netif_set_real_num_tx_queues(card->dev, count);
1213 if (card->qdio.no_out_queues == count)
1216 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1217 qeth_free_qdio_queues(card);
1220 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1222 card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE;
1223 card->qdio.no_out_queues = count;
1227 static int qeth_update_from_chp_desc(struct qeth_card *card)
1229 struct ccw_device *ccwdev;
1230 struct channel_path_desc_fmt0 *chp_dsc;
1233 QETH_CARD_TEXT(card, 2, "chp_desc");
1235 ccwdev = card->data.ccwdev;
1236 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1240 card->info.func_level = 0x4100 + chp_dsc->desc;
1242 if (IS_OSD(card) || IS_OSX(card))
1243 /* CHPP field bit 6 == 1 -> single queue */
1244 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1247 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1248 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1252 static void qeth_init_qdio_info(struct qeth_card *card)
1254 QETH_CARD_TEXT(card, 4, "intqdinf");
1255 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1256 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1257 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1260 card->qdio.no_in_queues = 1;
1261 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1263 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1265 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1266 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1267 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1268 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1271 static void qeth_set_initial_options(struct qeth_card *card)
1273 card->options.route4.type = NO_ROUTER;
1274 card->options.route6.type = NO_ROUTER;
1275 card->options.rx_sg_cb = QETH_RX_SG_CB;
1276 card->options.isolation = ISOLATION_MODE_NONE;
1277 card->options.cq = QETH_CQ_DISABLED;
1278 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1281 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1283 unsigned long flags;
1286 spin_lock_irqsave(&card->thread_mask_lock, flags);
1287 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1288 (u8) card->thread_start_mask,
1289 (u8) card->thread_allowed_mask,
1290 (u8) card->thread_running_mask);
1291 rc = (card->thread_start_mask & thread);
1292 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1296 static void qeth_start_kernel_thread(struct work_struct *work)
1298 struct task_struct *ts;
1299 struct qeth_card *card = container_of(work, struct qeth_card,
1300 kernel_thread_starter);
1301 QETH_CARD_TEXT(card , 2, "strthrd");
1303 if (card->read.state != CH_STATE_UP &&
1304 card->write.state != CH_STATE_UP)
1306 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1307 ts = kthread_run(card->discipline->recover, (void *)card,
1310 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1311 qeth_clear_thread_running_bit(card,
1312 QETH_RECOVER_THREAD);
1317 static void qeth_buffer_reclaim_work(struct work_struct *);
1318 static void qeth_setup_card(struct qeth_card *card)
1320 QETH_CARD_TEXT(card, 2, "setupcrd");
1322 card->info.type = CARD_RDEV(card)->id.driver_info;
1323 card->state = CARD_STATE_DOWN;
1324 spin_lock_init(&card->lock);
1325 spin_lock_init(&card->thread_mask_lock);
1326 mutex_init(&card->conf_mutex);
1327 mutex_init(&card->discipline_mutex);
1328 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1329 INIT_LIST_HEAD(&card->cmd_waiter_list);
1330 init_waitqueue_head(&card->wait_q);
1331 qeth_set_initial_options(card);
1332 /* IP address takeover */
1333 INIT_LIST_HEAD(&card->ipato.entries);
1334 qeth_init_qdio_info(card);
1335 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1336 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1339 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1341 struct qeth_card *card = container_of(slr, struct qeth_card,
1342 qeth_service_level);
1343 if (card->info.mcl_level[0])
1344 seq_printf(m, "qeth: %s firmware level %s\n",
1345 CARD_BUS_ID(card), card->info.mcl_level);
1348 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1350 struct qeth_card *card;
1352 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1353 card = kzalloc(sizeof(*card), GFP_KERNEL);
1356 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1359 dev_set_drvdata(&gdev->dev, card);
1360 CARD_RDEV(card) = gdev->cdev[0];
1361 CARD_WDEV(card) = gdev->cdev[1];
1362 CARD_DDEV(card) = gdev->cdev[2];
1364 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1365 dev_name(&gdev->dev));
1366 if (!card->event_wq)
1369 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1370 if (!card->read_cmd)
1373 qeth_setup_channel(&card->read);
1374 qeth_setup_channel(&card->write);
1375 qeth_setup_channel(&card->data);
1376 card->qeth_service_level.seq_print = qeth_core_sl_print;
1377 register_service_level(&card->qeth_service_level);
1381 destroy_workqueue(card->event_wq);
1383 dev_set_drvdata(&gdev->dev, NULL);
1389 static int qeth_clear_channel(struct qeth_card *card,
1390 struct qeth_channel *channel)
1394 QETH_CARD_TEXT(card, 3, "clearch");
1395 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1396 rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1397 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1401 rc = wait_event_interruptible_timeout(card->wait_q,
1402 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1403 if (rc == -ERESTARTSYS)
1405 if (channel->state != CH_STATE_STOPPED)
1407 channel->state = CH_STATE_DOWN;
1411 static int qeth_halt_channel(struct qeth_card *card,
1412 struct qeth_channel *channel)
1416 QETH_CARD_TEXT(card, 3, "haltch");
1417 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1418 rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1419 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1423 rc = wait_event_interruptible_timeout(card->wait_q,
1424 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1425 if (rc == -ERESTARTSYS)
1427 if (channel->state != CH_STATE_HALTED)
1432 static int qeth_halt_channels(struct qeth_card *card)
1434 int rc1 = 0, rc2 = 0, rc3 = 0;
1436 QETH_CARD_TEXT(card, 3, "haltchs");
1437 rc1 = qeth_halt_channel(card, &card->read);
1438 rc2 = qeth_halt_channel(card, &card->write);
1439 rc3 = qeth_halt_channel(card, &card->data);
1447 static int qeth_clear_channels(struct qeth_card *card)
1449 int rc1 = 0, rc2 = 0, rc3 = 0;
1451 QETH_CARD_TEXT(card, 3, "clearchs");
1452 rc1 = qeth_clear_channel(card, &card->read);
1453 rc2 = qeth_clear_channel(card, &card->write);
1454 rc3 = qeth_clear_channel(card, &card->data);
1462 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1466 QETH_CARD_TEXT(card, 3, "clhacrd");
1469 rc = qeth_halt_channels(card);
1472 return qeth_clear_channels(card);
1475 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1479 QETH_CARD_TEXT(card, 3, "qdioclr");
1480 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1481 QETH_QDIO_CLEANING)) {
1482 case QETH_QDIO_ESTABLISHED:
1484 rc = qdio_shutdown(CARD_DDEV(card),
1485 QDIO_FLAG_CLEANUP_USING_HALT);
1487 rc = qdio_shutdown(CARD_DDEV(card),
1488 QDIO_FLAG_CLEANUP_USING_CLEAR);
1490 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1491 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1493 case QETH_QDIO_CLEANING:
1498 rc = qeth_clear_halt_card(card, use_halt);
1500 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1501 card->state = CARD_STATE_DOWN;
1504 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1506 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1508 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1509 struct diag26c_vnic_resp *response = NULL;
1510 struct diag26c_vnic_req *request = NULL;
1511 struct ccw_dev_id id;
1515 QETH_CARD_TEXT(card, 2, "vmlayer");
1517 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1521 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1522 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1523 if (!request || !response) {
1528 ccw_device_get_id(CARD_RDEV(card), &id);
1529 request->resp_buf_len = sizeof(*response);
1530 request->resp_version = DIAG26C_VERSION6_VM65918;
1531 request->req_format = DIAG26C_VNIC_INFO;
1533 memcpy(&request->sys_name, userid, 8);
1534 request->devno = id.devno;
1536 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1537 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1538 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1541 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1543 if (request->resp_buf_len < sizeof(*response) ||
1544 response->version != request->resp_version) {
1549 if (response->protocol == VNIC_INFO_PROT_L2)
1550 disc = QETH_DISCIPLINE_LAYER2;
1551 else if (response->protocol == VNIC_INFO_PROT_L3)
1552 disc = QETH_DISCIPLINE_LAYER3;
1558 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1562 /* Determine whether the device requires a specific layer discipline */
1563 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1565 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1567 if (IS_OSM(card) || IS_OSN(card))
1568 disc = QETH_DISCIPLINE_LAYER2;
1569 else if (IS_VM_NIC(card))
1570 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1571 qeth_vm_detect_layer(card);
1574 case QETH_DISCIPLINE_LAYER2:
1575 QETH_CARD_TEXT(card, 3, "force l2");
1577 case QETH_DISCIPLINE_LAYER3:
1578 QETH_CARD_TEXT(card, 3, "force l3");
1581 QETH_CARD_TEXT(card, 3, "force no");
1587 static void qeth_set_blkt_defaults(struct qeth_card *card)
1589 QETH_CARD_TEXT(card, 2, "cfgblkt");
1591 if (card->info.use_v1_blkt) {
1592 card->info.blkt.time_total = 0;
1593 card->info.blkt.inter_packet = 0;
1594 card->info.blkt.inter_packet_jumbo = 0;
1596 card->info.blkt.time_total = 250;
1597 card->info.blkt.inter_packet = 5;
1598 card->info.blkt.inter_packet_jumbo = 15;
1602 static void qeth_init_tokens(struct qeth_card *card)
1604 card->token.issuer_rm_w = 0x00010103UL;
1605 card->token.cm_filter_w = 0x00010108UL;
1606 card->token.cm_connection_w = 0x0001010aUL;
1607 card->token.ulp_filter_w = 0x0001010bUL;
1608 card->token.ulp_connection_w = 0x0001010dUL;
1611 static void qeth_init_func_level(struct qeth_card *card)
1613 switch (card->info.type) {
1614 case QETH_CARD_TYPE_IQD:
1615 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1617 case QETH_CARD_TYPE_OSD:
1618 case QETH_CARD_TYPE_OSN:
1619 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1626 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1627 struct qeth_cmd_buffer *iob)
1629 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1630 QETH_SEQ_NO_LENGTH);
1631 if (iob->channel == &card->write)
1632 card->seqno.trans_hdr++;
1635 static int qeth_peer_func_level(int level)
1637 if ((level & 0xff) == 8)
1638 return (level & 0xff) + 0x400;
1639 if (((level >> 8) & 3) == 1)
1640 return (level & 0xff) + 0x200;
1644 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1645 struct qeth_cmd_buffer *iob)
1647 qeth_idx_finalize_cmd(card, iob);
1649 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1650 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1651 card->seqno.pdu_hdr++;
1652 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1653 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1655 iob->reply->seqno = QETH_IDX_COMMAND_SEQNO;
1656 iob->callback = qeth_release_buffer_cb;
1659 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1661 unsigned int data_length)
1663 struct qeth_cmd_buffer *iob;
1665 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1669 memcpy(iob->data, data, data_length);
1670 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1672 iob->finalize = qeth_mpc_finalize_cmd;
1677 * qeth_send_control_data() - send control command to the card
1678 * @card: qeth_card structure pointer
1679 * @iob: qeth_cmd_buffer pointer
1680 * @reply_cb: callback function pointer
1681 * @cb_card: pointer to the qeth_card structure
1682 * @cb_reply: pointer to the qeth_reply structure
1683 * @cb_cmd: pointer to the original iob for non-IPA
1684 * commands, or to the qeth_ipa_cmd structure
1685 * for the IPA commands.
1686 * @reply_param: private pointer passed to the callback
1688 * Callback function gets called one or more times, with cb_cmd
1689 * pointing to the response returned by the hardware. Callback
1690 * function must return
1691 * > 0 if more reply blocks are expected,
1692 * 0 if the last or only reply block is received, and
1694 * Callback function can get the value of the reply_param pointer from the
1695 * field 'param' of the structure qeth_reply.
1698 static int qeth_send_control_data(struct qeth_card *card,
1699 struct qeth_cmd_buffer *iob,
1700 int (*reply_cb)(struct qeth_card *cb_card,
1701 struct qeth_reply *cb_reply,
1702 unsigned long cb_cmd),
1705 struct qeth_channel *channel = iob->channel;
1706 long timeout = iob->timeout;
1708 struct qeth_reply *reply = NULL;
1710 QETH_CARD_TEXT(card, 2, "sendctl");
1712 reply = qeth_alloc_reply(card);
1717 reply->callback = reply_cb;
1718 reply->param = reply_param;
1720 /* pairs with qeth_put_cmd(): */
1721 qeth_get_reply(reply);
1724 timeout = wait_event_interruptible_timeout(card->wait_q,
1725 qeth_trylock_channel(channel),
1728 qeth_put_reply(reply);
1730 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1734 iob->finalize(card, iob);
1735 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1737 qeth_enqueue_reply(card, reply);
1739 QETH_CARD_TEXT(card, 6, "noirqpnd");
1740 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1741 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1742 (addr_t) iob, 0, 0, timeout);
1743 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1745 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1746 CARD_DEVID(card), rc);
1747 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1748 qeth_dequeue_reply(card, reply);
1749 qeth_put_reply(reply);
1751 atomic_set(&channel->irq_pending, 0);
1752 wake_up(&card->wait_q);
1756 timeout = wait_for_completion_interruptible_timeout(&reply->received,
1759 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1761 qeth_dequeue_reply(card, reply);
1764 /* Wait until the callback for a late reply has completed: */
1765 spin_lock_irq(&reply->lock);
1767 /* Zap any callback that's still pending: */
1769 spin_unlock_irq(&reply->lock);
1774 qeth_put_reply(reply);
1778 static void qeth_read_conf_data_cb(struct qeth_card *card,
1779 struct qeth_cmd_buffer *iob)
1781 unsigned char *prcd = iob->data;
1783 QETH_CARD_TEXT(card, 2, "cfgunit");
1784 card->info.chpid = prcd[30];
1785 card->info.unit_addr2 = prcd[31];
1786 card->info.cula = prcd[63];
1787 card->info.is_vm_nic = ((prcd[0x10] == _ascebc['V']) &&
1788 (prcd[0x11] == _ascebc['M']));
1789 card->info.use_v1_blkt = prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1790 prcd[76] >= 0xF1 && prcd[76] <= 0xF4;
1792 qeth_notify_reply(iob->reply, 0);
1796 static int qeth_read_conf_data(struct qeth_card *card)
1798 struct qeth_channel *channel = &card->data;
1799 struct qeth_cmd_buffer *iob;
1802 /* scan for RCD command in extended SenseID data */
1803 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1804 if (!ciw || ciw->cmd == 0)
1807 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1811 iob->callback = qeth_read_conf_data_cb;
1812 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1815 return qeth_send_control_data(card, iob, NULL, NULL);
1818 static int qeth_idx_check_activate_response(struct qeth_card *card,
1819 struct qeth_channel *channel,
1820 struct qeth_cmd_buffer *iob)
1824 rc = qeth_check_idx_response(card, iob->data);
1828 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1831 /* negative reply: */
1832 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1833 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1835 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1836 case QETH_IDX_ACT_ERR_EXCL:
1837 dev_err(&channel->ccwdev->dev,
1838 "The adapter is used exclusively by another host\n");
1840 case QETH_IDX_ACT_ERR_AUTH:
1841 case QETH_IDX_ACT_ERR_AUTH_USER:
1842 dev_err(&channel->ccwdev->dev,
1843 "Setting the device online failed because of insufficient authorization\n");
1846 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1847 CCW_DEVID(channel->ccwdev));
1852 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
1853 struct qeth_cmd_buffer *iob)
1855 struct qeth_channel *channel = iob->channel;
1859 QETH_CARD_TEXT(card, 2, "idxrdcb");
1861 rc = qeth_idx_check_activate_response(card, channel, iob);
1865 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1866 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1867 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1868 CCW_DEVID(channel->ccwdev),
1869 card->info.func_level, peer_level);
1874 memcpy(&card->token.issuer_rm_r,
1875 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1876 QETH_MPC_TOKEN_LENGTH);
1877 memcpy(&card->info.mcl_level[0],
1878 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1881 qeth_notify_reply(iob->reply, rc);
1885 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
1886 struct qeth_cmd_buffer *iob)
1888 struct qeth_channel *channel = iob->channel;
1892 QETH_CARD_TEXT(card, 2, "idxwrcb");
1894 rc = qeth_idx_check_activate_response(card, channel, iob);
1898 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1899 if ((peer_level & ~0x0100) !=
1900 qeth_peer_func_level(card->info.func_level)) {
1901 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1902 CCW_DEVID(channel->ccwdev),
1903 card->info.func_level, peer_level);
1908 qeth_notify_reply(iob->reply, rc);
1912 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1913 struct qeth_cmd_buffer *iob)
1915 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1916 u8 port = ((u8)card->dev->dev_port) | 0x80;
1917 struct ccw1 *ccw = __ccw_from_cmd(iob);
1918 struct ccw_dev_id dev_id;
1920 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
1922 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
1923 ccw_device_get_id(CARD_DDEV(card), &dev_id);
1924 iob->finalize = qeth_idx_finalize_cmd;
1926 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
1927 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1928 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1929 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1930 &card->info.func_level, 2);
1931 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
1932 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
1935 static int qeth_idx_activate_read_channel(struct qeth_card *card)
1937 struct qeth_channel *channel = &card->read;
1938 struct qeth_cmd_buffer *iob;
1941 QETH_CARD_TEXT(card, 2, "idxread");
1943 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1947 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1948 qeth_idx_setup_activate_cmd(card, iob);
1949 iob->callback = qeth_idx_activate_read_channel_cb;
1951 rc = qeth_send_control_data(card, iob, NULL, NULL);
1955 channel->state = CH_STATE_UP;
1959 static int qeth_idx_activate_write_channel(struct qeth_card *card)
1961 struct qeth_channel *channel = &card->write;
1962 struct qeth_cmd_buffer *iob;
1965 QETH_CARD_TEXT(card, 2, "idxwrite");
1967 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
1971 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1972 qeth_idx_setup_activate_cmd(card, iob);
1973 iob->callback = qeth_idx_activate_write_channel_cb;
1975 rc = qeth_send_control_data(card, iob, NULL, NULL);
1979 channel->state = CH_STATE_UP;
1983 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
1986 struct qeth_cmd_buffer *iob;
1988 QETH_CARD_TEXT(card, 2, "cmenblcb");
1990 iob = (struct qeth_cmd_buffer *) data;
1991 memcpy(&card->token.cm_filter_r,
1992 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
1993 QETH_MPC_TOKEN_LENGTH);
1997 static int qeth_cm_enable(struct qeth_card *card)
1999 struct qeth_cmd_buffer *iob;
2001 QETH_CARD_TEXT(card, 2, "cmenable");
2003 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2007 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2008 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2009 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2010 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2012 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2015 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2018 struct qeth_cmd_buffer *iob;
2020 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2022 iob = (struct qeth_cmd_buffer *) data;
2023 memcpy(&card->token.cm_connection_r,
2024 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2025 QETH_MPC_TOKEN_LENGTH);
2029 static int qeth_cm_setup(struct qeth_card *card)
2031 struct qeth_cmd_buffer *iob;
2033 QETH_CARD_TEXT(card, 2, "cmsetup");
2035 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2039 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2040 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2041 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2042 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2043 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2044 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2045 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2048 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2050 struct net_device *dev = card->dev;
2051 unsigned int new_mtu;
2054 /* IQD needs accurate max MTU to set up its RX buffers: */
2057 /* tolerate quirky HW: */
2058 max_mtu = ETH_MAX_MTU;
2063 /* move any device with default MTU to new max MTU: */
2064 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2066 /* adjust RX buffer size to new max MTU: */
2067 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2068 if (dev->max_mtu && dev->max_mtu != max_mtu)
2069 qeth_free_qdio_queues(card);
2073 /* default MTUs for first setup: */
2074 else if (IS_LAYER2(card))
2075 new_mtu = ETH_DATA_LEN;
2077 new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */
2080 dev->max_mtu = max_mtu;
2081 dev->mtu = min(new_mtu, max_mtu);
2086 static int qeth_get_mtu_outof_framesize(int framesize)
2088 switch (framesize) {
2102 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2105 __u16 mtu, framesize;
2108 struct qeth_cmd_buffer *iob;
2110 QETH_CARD_TEXT(card, 2, "ulpenacb");
2112 iob = (struct qeth_cmd_buffer *) data;
2113 memcpy(&card->token.ulp_filter_r,
2114 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2115 QETH_MPC_TOKEN_LENGTH);
2117 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2118 mtu = qeth_get_mtu_outof_framesize(framesize);
2120 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2122 *(u16 *)reply->param = mtu;
2124 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2125 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2127 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2128 card->info.link_type = link_type;
2130 card->info.link_type = 0;
2131 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2135 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2138 return QETH_PROT_OSN2;
2139 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2142 static int qeth_ulp_enable(struct qeth_card *card)
2144 u8 prot_type = qeth_mpc_select_prot_type(card);
2145 struct qeth_cmd_buffer *iob;
2149 QETH_CARD_TEXT(card, 2, "ulpenabl");
2151 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2155 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2156 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2157 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2158 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2159 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2160 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2161 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2164 return qeth_update_max_mtu(card, max_mtu);
2167 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2170 struct qeth_cmd_buffer *iob;
2172 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2174 iob = (struct qeth_cmd_buffer *) data;
2175 memcpy(&card->token.ulp_connection_r,
2176 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2177 QETH_MPC_TOKEN_LENGTH);
2178 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2180 QETH_CARD_TEXT(card, 2, "olmlimit");
2181 dev_err(&card->gdev->dev, "A connection could not be "
2182 "established because of an OLM limit\n");
2188 static int qeth_ulp_setup(struct qeth_card *card)
2191 struct qeth_cmd_buffer *iob;
2192 struct ccw_dev_id dev_id;
2194 QETH_CARD_TEXT(card, 2, "ulpsetup");
2196 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2200 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2201 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2202 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2203 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2204 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2205 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2207 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2208 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2209 temp = (card->info.cula << 8) + card->info.unit_addr2;
2210 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2211 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2214 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2216 struct qeth_qdio_out_buffer *newbuf;
2218 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2222 newbuf->buffer = q->qdio_bufs[bidx];
2223 skb_queue_head_init(&newbuf->skb_list);
2224 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2226 newbuf->next_pending = q->bufs[bidx];
2227 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2228 q->bufs[bidx] = newbuf;
2232 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2237 qeth_drain_output_queue(q, true);
2238 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2242 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2244 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2249 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2256 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2260 QETH_CARD_TEXT(card, 2, "allcqdbf");
2262 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2263 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2266 QETH_CARD_TEXT(card, 2, "inq");
2267 card->qdio.in_q = qeth_alloc_qdio_queue();
2268 if (!card->qdio.in_q)
2271 /* inbound buffer pool */
2272 if (qeth_alloc_buffer_pool(card))
2276 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2277 card->qdio.out_qs[i] = qeth_alloc_output_queue();
2278 if (!card->qdio.out_qs[i])
2280 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2281 QETH_CARD_HEX(card, 2, &card->qdio.out_qs[i], sizeof(void *));
2282 card->qdio.out_qs[i]->card = card;
2283 card->qdio.out_qs[i]->queue_no = i;
2284 /* give outbound qeth_qdio_buffers their qdio_buffers */
2285 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2286 WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2287 if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2288 goto out_freeoutqbufs;
2293 if (qeth_alloc_cq(card))
2301 kmem_cache_free(qeth_qdio_outbuf_cache,
2302 card->qdio.out_qs[i]->bufs[j]);
2303 card->qdio.out_qs[i]->bufs[j] = NULL;
2307 qeth_free_output_queue(card->qdio.out_qs[--i]);
2308 card->qdio.out_qs[i] = NULL;
2310 qeth_free_buffer_pool(card);
2312 qeth_free_qdio_queue(card->qdio.in_q);
2313 card->qdio.in_q = NULL;
2315 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2319 static void qeth_free_qdio_queues(struct qeth_card *card)
2323 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2324 QETH_QDIO_UNINITIALIZED)
2328 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2329 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2330 if (card->qdio.in_q->bufs[j].rx_skb)
2331 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2333 qeth_free_qdio_queue(card->qdio.in_q);
2334 card->qdio.in_q = NULL;
2335 /* inbound buffer pool */
2336 qeth_free_buffer_pool(card);
2337 /* free outbound qdio_qs */
2338 for (i = 0; i < card->qdio.no_out_queues; i++) {
2339 qeth_free_output_queue(card->qdio.out_qs[i]);
2340 card->qdio.out_qs[i] = NULL;
2344 static void qeth_create_qib_param_field(struct qeth_card *card,
2348 param_field[0] = _ascebc['P'];
2349 param_field[1] = _ascebc['C'];
2350 param_field[2] = _ascebc['I'];
2351 param_field[3] = _ascebc['T'];
2352 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2353 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2354 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2357 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2360 param_field[16] = _ascebc['B'];
2361 param_field[17] = _ascebc['L'];
2362 param_field[18] = _ascebc['K'];
2363 param_field[19] = _ascebc['T'];
2364 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2365 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2366 *((unsigned int *) (¶m_field[28])) =
2367 card->info.blkt.inter_packet_jumbo;
2370 static int qeth_qdio_activate(struct qeth_card *card)
2372 QETH_CARD_TEXT(card, 3, "qdioact");
2373 return qdio_activate(CARD_DDEV(card));
2376 static int qeth_dm_act(struct qeth_card *card)
2378 struct qeth_cmd_buffer *iob;
2380 QETH_CARD_TEXT(card, 2, "dmact");
2382 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2386 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2387 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2388 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2389 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2390 return qeth_send_control_data(card, iob, NULL, NULL);
2393 static int qeth_mpc_initialize(struct qeth_card *card)
2397 QETH_CARD_TEXT(card, 2, "mpcinit");
2399 rc = qeth_issue_next_read(card);
2401 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2404 rc = qeth_cm_enable(card);
2406 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2409 rc = qeth_cm_setup(card);
2411 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2414 rc = qeth_ulp_enable(card);
2416 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2419 rc = qeth_ulp_setup(card);
2421 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2424 rc = qeth_alloc_qdio_queues(card);
2426 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2429 rc = qeth_qdio_establish(card);
2431 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2432 qeth_free_qdio_queues(card);
2435 rc = qeth_qdio_activate(card);
2437 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2440 rc = qeth_dm_act(card);
2442 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2448 qeth_qdio_clear_card(card, !IS_IQD(card));
2449 qdio_free(CARD_DDEV(card));
2453 void qeth_print_status_message(struct qeth_card *card)
2455 switch (card->info.type) {
2456 case QETH_CARD_TYPE_OSD:
2457 case QETH_CARD_TYPE_OSM:
2458 case QETH_CARD_TYPE_OSX:
2459 /* VM will use a non-zero first character
2460 * to indicate a HiperSockets like reporting
2461 * of the level OSA sets the first character to zero
2463 if (!card->info.mcl_level[0]) {
2464 sprintf(card->info.mcl_level, "%02x%02x",
2465 card->info.mcl_level[2],
2466 card->info.mcl_level[3]);
2470 case QETH_CARD_TYPE_IQD:
2471 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2472 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2473 card->info.mcl_level[0]];
2474 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2475 card->info.mcl_level[1]];
2476 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2477 card->info.mcl_level[2]];
2478 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2479 card->info.mcl_level[3]];
2480 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2484 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2486 dev_info(&card->gdev->dev,
2487 "Device is a%s card%s%s%s\nwith link type %s.\n",
2488 qeth_get_cardname(card),
2489 (card->info.mcl_level[0]) ? " (level: " : "",
2490 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2491 (card->info.mcl_level[0]) ? ")" : "",
2492 qeth_get_cardname_short(card));
2494 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2496 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2498 struct qeth_buffer_pool_entry *entry;
2500 QETH_CARD_TEXT(card, 5, "inwrklst");
2502 list_for_each_entry(entry,
2503 &card->qdio.init_pool.entry_list, init_list) {
2504 qeth_put_buffer_pool_entry(card, entry);
2508 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2509 struct qeth_card *card)
2511 struct list_head *plh;
2512 struct qeth_buffer_pool_entry *entry;
2516 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2519 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2520 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2522 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2523 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2529 list_del_init(&entry->list);
2534 /* no free buffer in pool so take first one and swap pages */
2535 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2536 struct qeth_buffer_pool_entry, list);
2537 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2538 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2539 page = alloc_page(GFP_ATOMIC);
2543 free_page((unsigned long)entry->elements[i]);
2544 entry->elements[i] = page_address(page);
2545 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2549 list_del_init(&entry->list);
2553 static int qeth_init_input_buffer(struct qeth_card *card,
2554 struct qeth_qdio_buffer *buf)
2556 struct qeth_buffer_pool_entry *pool_entry;
2559 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2560 buf->rx_skb = netdev_alloc_skb(card->dev,
2561 QETH_RX_PULL_LEN + ETH_HLEN);
2566 pool_entry = qeth_find_free_buffer_pool_entry(card);
2571 * since the buffer is accessed only from the input_tasklet
2572 * there shouldn't be a need to synchronize; also, since we use
2573 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
2577 buf->pool_entry = pool_entry;
2578 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2579 buf->buffer->element[i].length = PAGE_SIZE;
2580 buf->buffer->element[i].addr = pool_entry->elements[i];
2581 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2582 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2584 buf->buffer->element[i].eflags = 0;
2585 buf->buffer->element[i].sflags = 0;
2590 int qeth_init_qdio_queues(struct qeth_card *card)
2595 QETH_CARD_TEXT(card, 2, "initqdqs");
2598 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2599 memset(&card->rx, 0, sizeof(struct qeth_rx));
2600 qeth_initialize_working_pool_list(card);
2601 /*give only as many buffers to hardware as we have buffer pool entries*/
2602 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2603 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2604 card->qdio.in_q->next_buf_to_init =
2605 card->qdio.in_buf_pool.buf_count - 1;
2606 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2607 card->qdio.in_buf_pool.buf_count - 1);
2609 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2614 rc = qeth_cq_init(card);
2619 /* outbound queue */
2620 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2621 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2623 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2624 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2625 queue->next_buf_to_fill = 0;
2627 atomic_set(&queue->used_buffers, 0);
2628 atomic_set(&queue->set_pci_flags_count, 0);
2629 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2633 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2635 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2636 struct qeth_cmd_buffer *iob)
2638 qeth_mpc_finalize_cmd(card, iob);
2640 /* override with IPA-specific values: */
2641 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa;
2642 iob->reply->seqno = card->seqno.ipa++;
2645 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2648 u8 prot_type = qeth_mpc_select_prot_type(card);
2649 u16 total_length = iob->length;
2651 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2653 iob->finalize = qeth_ipa_finalize_cmd;
2655 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2656 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2657 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2658 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2659 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2660 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2661 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2662 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2664 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2666 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2667 enum qeth_ipa_cmds cmd_code,
2668 enum qeth_prot_versions prot,
2669 unsigned int data_length)
2671 enum qeth_link_types link_type = card->info.link_type;
2672 struct qeth_cmd_buffer *iob;
2673 struct qeth_ipacmd_hdr *hdr;
2675 data_length += offsetof(struct qeth_ipa_cmd, data);
2676 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2681 qeth_prepare_ipa_cmd(card, iob, data_length);
2683 hdr = &__ipa_cmd(iob)->hdr;
2684 hdr->command = cmd_code;
2685 hdr->initiator = IPA_CMD_INITIATOR_HOST;
2686 /* hdr->seqno is set by qeth_send_control_data() */
2687 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2688 hdr->rel_adapter_no = (u8) card->dev->dev_port;
2689 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2690 hdr->param_count = 1;
2691 hdr->prot_version = prot;
2694 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2696 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2697 struct qeth_reply *reply, unsigned long data)
2699 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2701 return (cmd->hdr.return_code) ? -EIO : 0;
2705 * qeth_send_ipa_cmd() - send an IPA command
2707 * See qeth_send_control_data() for explanation of the arguments.
2710 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2711 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2717 QETH_CARD_TEXT(card, 4, "sendipa");
2719 if (card->read_or_write_problem) {
2724 if (reply_cb == NULL)
2725 reply_cb = qeth_send_ipa_cmd_cb;
2726 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
2728 qeth_clear_ipacmd_list(card);
2729 qeth_schedule_recovery(card);
2733 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2735 static int qeth_send_startlan_cb(struct qeth_card *card,
2736 struct qeth_reply *reply, unsigned long data)
2738 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2740 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2743 return (cmd->hdr.return_code) ? -EIO : 0;
2746 static int qeth_send_startlan(struct qeth_card *card)
2748 struct qeth_cmd_buffer *iob;
2750 QETH_CARD_TEXT(card, 2, "strtlan");
2752 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
2755 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
2758 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2760 if (!cmd->hdr.return_code)
2761 cmd->hdr.return_code =
2762 cmd->data.setadapterparms.hdr.return_code;
2763 return cmd->hdr.return_code;
2766 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2767 struct qeth_reply *reply, unsigned long data)
2769 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2771 QETH_CARD_TEXT(card, 3, "quyadpcb");
2772 if (qeth_setadpparms_inspect_rc(cmd))
2775 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2776 card->info.link_type =
2777 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2778 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
2780 card->options.adp.supported_funcs =
2781 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2785 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2786 enum qeth_ipa_setadp_cmd adp_cmd,
2787 unsigned int data_length)
2789 struct qeth_ipacmd_setadpparms_hdr *hdr;
2790 struct qeth_cmd_buffer *iob;
2792 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2794 offsetof(struct qeth_ipacmd_setadpparms,
2799 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2800 hdr->cmdlength = sizeof(*hdr) + data_length;
2801 hdr->command_code = adp_cmd;
2802 hdr->used_total = 1;
2807 static int qeth_query_setadapterparms(struct qeth_card *card)
2810 struct qeth_cmd_buffer *iob;
2812 QETH_CARD_TEXT(card, 3, "queryadp");
2813 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2814 SETADP_DATA_SIZEOF(query_cmds_supp));
2817 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2821 static int qeth_query_ipassists_cb(struct qeth_card *card,
2822 struct qeth_reply *reply, unsigned long data)
2824 struct qeth_ipa_cmd *cmd;
2826 QETH_CARD_TEXT(card, 2, "qipasscb");
2828 cmd = (struct qeth_ipa_cmd *) data;
2830 switch (cmd->hdr.return_code) {
2831 case IPA_RC_SUCCESS:
2833 case IPA_RC_NOTSUPP:
2834 case IPA_RC_L2_UNSUPPORTED_CMD:
2835 QETH_CARD_TEXT(card, 2, "ipaunsup");
2836 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2837 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2840 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2841 CARD_DEVID(card), cmd->hdr.return_code);
2845 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2846 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2847 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2848 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2849 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2850 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2852 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2857 static int qeth_query_ipassists(struct qeth_card *card,
2858 enum qeth_prot_versions prot)
2861 struct qeth_cmd_buffer *iob;
2863 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
2864 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
2867 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2871 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
2872 struct qeth_reply *reply, unsigned long data)
2874 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2875 struct qeth_query_switch_attributes *attrs;
2876 struct qeth_switch_info *sw_info;
2878 QETH_CARD_TEXT(card, 2, "qswiatcb");
2879 if (qeth_setadpparms_inspect_rc(cmd))
2882 sw_info = (struct qeth_switch_info *)reply->param;
2883 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
2884 sw_info->capabilities = attrs->capabilities;
2885 sw_info->settings = attrs->settings;
2886 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
2891 int qeth_query_switch_attributes(struct qeth_card *card,
2892 struct qeth_switch_info *sw_info)
2894 struct qeth_cmd_buffer *iob;
2896 QETH_CARD_TEXT(card, 2, "qswiattr");
2897 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
2899 if (!netif_carrier_ok(card->dev))
2901 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
2904 return qeth_send_ipa_cmd(card, iob,
2905 qeth_query_switch_attributes_cb, sw_info);
2908 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
2909 enum qeth_diags_cmds sub_cmd,
2910 unsigned int data_length)
2912 struct qeth_ipacmd_diagass *cmd;
2913 struct qeth_cmd_buffer *iob;
2915 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
2916 DIAG_HDR_LEN + data_length);
2920 cmd = &__ipa_cmd(iob)->data.diagass;
2921 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
2922 cmd->subcmd = sub_cmd;
2925 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
2927 static int qeth_query_setdiagass_cb(struct qeth_card *card,
2928 struct qeth_reply *reply, unsigned long data)
2930 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2931 u16 rc = cmd->hdr.return_code;
2934 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
2938 card->info.diagass_support = cmd->data.diagass.ext;
2942 static int qeth_query_setdiagass(struct qeth_card *card)
2944 struct qeth_cmd_buffer *iob;
2946 QETH_CARD_TEXT(card, 2, "qdiagass");
2947 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
2950 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
2953 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
2955 unsigned long info = get_zeroed_page(GFP_KERNEL);
2956 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
2957 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
2958 struct ccw_dev_id ccwid;
2961 tid->chpid = card->info.chpid;
2962 ccw_device_get_id(CARD_RDEV(card), &ccwid);
2963 tid->ssid = ccwid.ssid;
2964 tid->devno = ccwid.devno;
2967 level = stsi(NULL, 0, 0, 0);
2968 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
2969 tid->lparnr = info222->lpar_number;
2970 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
2971 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
2972 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
2978 static int qeth_hw_trap_cb(struct qeth_card *card,
2979 struct qeth_reply *reply, unsigned long data)
2981 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2982 u16 rc = cmd->hdr.return_code;
2985 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
2991 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
2993 struct qeth_cmd_buffer *iob;
2994 struct qeth_ipa_cmd *cmd;
2996 QETH_CARD_TEXT(card, 2, "diagtrap");
2997 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3000 cmd = __ipa_cmd(iob);
3001 cmd->data.diagass.type = 1;
3002 cmd->data.diagass.action = action;
3004 case QETH_DIAGS_TRAP_ARM:
3005 cmd->data.diagass.options = 0x0003;
3006 cmd->data.diagass.ext = 0x00010000 +
3007 sizeof(struct qeth_trap_id);
3008 qeth_get_trap_id(card,
3009 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3011 case QETH_DIAGS_TRAP_DISARM:
3012 cmd->data.diagass.options = 0x0001;
3014 case QETH_DIAGS_TRAP_CAPTURE:
3017 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3019 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3021 static int qeth_check_qdio_errors(struct qeth_card *card,
3022 struct qdio_buffer *buf,
3023 unsigned int qdio_error,
3024 const char *dbftext)
3027 QETH_CARD_TEXT(card, 2, dbftext);
3028 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3029 buf->element[15].sflags);
3030 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3031 buf->element[14].sflags);
3032 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3033 if ((buf->element[15].sflags) == 0x12) {
3034 QETH_CARD_STAT_INC(card, rx_dropped);
3042 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3044 struct qeth_qdio_q *queue = card->qdio.in_q;
3045 struct list_head *lh;
3051 count = (index < queue->next_buf_to_init)?
3052 card->qdio.in_buf_pool.buf_count -
3053 (queue->next_buf_to_init - index) :
3054 card->qdio.in_buf_pool.buf_count -
3055 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3056 /* only requeue at a certain threshold to avoid SIGAs */
3057 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3058 for (i = queue->next_buf_to_init;
3059 i < queue->next_buf_to_init + count; ++i) {
3060 if (qeth_init_input_buffer(card,
3061 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3068 if (newcount < count) {
3069 /* we are in memory shortage so we switch back to
3070 traditional skb allocation and drop packages */
3071 atomic_set(&card->force_alloc_skb, 3);
3074 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3079 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3081 if (i == card->qdio.in_buf_pool.buf_count) {
3082 QETH_CARD_TEXT(card, 2, "qsarbw");
3083 card->reclaim_index = index;
3084 schedule_delayed_work(
3085 &card->buffer_reclaim_work,
3086 QETH_RECLAIM_WORK_TIME);
3092 * according to old code it should be avoided to requeue all
3093 * 128 buffers in order to benefit from PCI avoidance.
3094 * this function keeps at least one buffer (the buffer at
3095 * 'index') un-requeued -> this buffer is the first buffer that
3096 * will be requeued the next time
3098 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3099 queue->next_buf_to_init, count);
3101 QETH_CARD_TEXT(card, 2, "qinberr");
3103 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3104 QDIO_MAX_BUFFERS_PER_Q;
3108 static void qeth_buffer_reclaim_work(struct work_struct *work)
3110 struct qeth_card *card = container_of(work, struct qeth_card,
3111 buffer_reclaim_work.work);
3113 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3114 qeth_queue_input_buffer(card, card->reclaim_index);
3117 static void qeth_handle_send_error(struct qeth_card *card,
3118 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3120 int sbalf15 = buffer->buffer->element[15].sflags;
3122 QETH_CARD_TEXT(card, 6, "hdsnderr");
3123 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3128 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3131 QETH_CARD_TEXT(card, 1, "lnkfail");
3132 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3133 (u16)qdio_err, (u8)sbalf15);
3137 * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3138 * @queue: queue to check for packing buffer
3140 * Returns number of buffers that were prepared for flush.
3142 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3144 struct qeth_qdio_out_buffer *buffer;
3146 buffer = queue->bufs[queue->next_buf_to_fill];
3147 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3148 (buffer->next_element_to_fill > 0)) {
3149 /* it's a packing buffer */
3150 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3151 queue->next_buf_to_fill =
3152 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3159 * Switched to packing state if the number of used buffers on a queue
3160 * reaches a certain limit.
3162 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3164 if (!queue->do_pack) {
3165 if (atomic_read(&queue->used_buffers)
3166 >= QETH_HIGH_WATERMARK_PACK){
3167 /* switch non-PACKING -> PACKING */
3168 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3169 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3176 * Switches from packing to non-packing mode. If there is a packing
3177 * buffer on the queue this buffer will be prepared to be flushed.
3178 * In that case 1 is returned to inform the caller. If no buffer
3179 * has to be flushed, zero is returned.
3181 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3183 if (queue->do_pack) {
3184 if (atomic_read(&queue->used_buffers)
3185 <= QETH_LOW_WATERMARK_PACK) {
3186 /* switch PACKING -> non-PACKING */
3187 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3188 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3190 return qeth_prep_flush_pack_buffer(queue);
3196 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3199 struct qeth_qdio_out_buffer *buf;
3202 unsigned int qdio_flags;
3204 for (i = index; i < index + count; ++i) {
3205 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3206 buf = queue->bufs[bidx];
3207 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3208 SBAL_EFLAGS_LAST_ENTRY;
3210 if (queue->bufstates)
3211 queue->bufstates[bidx].user = buf;
3213 if (IS_IQD(queue->card))
3216 if (!queue->do_pack) {
3217 if ((atomic_read(&queue->used_buffers) >=
3218 (QETH_HIGH_WATERMARK_PACK -
3219 QETH_WATERMARK_PACK_FUZZ)) &&
3220 !atomic_read(&queue->set_pci_flags_count)) {
3221 /* it's likely that we'll go to packing
3223 atomic_inc(&queue->set_pci_flags_count);
3224 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3227 if (!atomic_read(&queue->set_pci_flags_count)) {
3229 * there's no outstanding PCI any more, so we
3230 * have to request a PCI to be sure the the PCI
3231 * will wake at some time in the future then we
3232 * can flush packed buffers that might still be
3233 * hanging around, which can happen if no
3234 * further send was requested by the stack
3236 atomic_inc(&queue->set_pci_flags_count);
3237 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3242 QETH_TXQ_STAT_ADD(queue, bufs, count);
3243 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3244 if (atomic_read(&queue->set_pci_flags_count))
3245 qdio_flags |= QDIO_FLAG_PCI_OUT;
3246 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3247 queue->queue_no, index, count);
3249 QETH_TXQ_STAT_ADD(queue, tx_errors, count);
3250 /* ignore temporary SIGA errors without busy condition */
3253 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3254 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3255 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3256 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3257 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3259 /* this must not happen under normal circumstances. if it
3260 * happens something is really wrong -> recover */
3261 qeth_schedule_recovery(queue->card);
3266 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3270 int q_was_packing = 0;
3273 * check if weed have to switch to non-packing mode or if
3274 * we have to get a pci flag out on the queue
3276 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3277 !atomic_read(&queue->set_pci_flags_count)) {
3278 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3279 QETH_OUT_Q_UNLOCKED) {
3281 * If we get in here, there was no action in
3282 * do_send_packet. So, we check if there is a
3283 * packing buffer to be flushed here.
3285 index = queue->next_buf_to_fill;
3286 q_was_packing = queue->do_pack;
3287 /* queue->do_pack may change */
3289 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3291 !atomic_read(&queue->set_pci_flags_count))
3292 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3294 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3296 qeth_flush_buffers(queue, index, flush_cnt);
3297 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3302 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3303 unsigned long card_ptr)
3305 struct qeth_card *card = (struct qeth_card *)card_ptr;
3307 if (card->dev->flags & IFF_UP)
3308 napi_schedule(&card->napi);
3311 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3315 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3319 if (card->options.cq == cq) {
3324 if (card->state != CARD_STATE_DOWN) {
3329 qeth_free_qdio_queues(card);
3330 card->options.cq = cq;
3337 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3339 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3340 unsigned int queue, int first_element,
3343 struct qeth_qdio_q *cq = card->qdio.c_q;
3347 if (!qeth_is_cq(card, queue))
3350 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3351 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3352 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3355 netif_tx_stop_all_queues(card->dev);
3356 qeth_schedule_recovery(card);
3360 for (i = first_element; i < first_element + count; ++i) {
3361 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3362 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3365 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3366 buffer->element[e].addr) {
3367 unsigned long phys_aob_addr;
3369 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3370 qeth_qdio_handle_aob(card, phys_aob_addr);
3373 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3375 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3376 card->qdio.c_q->next_buf_to_init,
3379 dev_warn(&card->gdev->dev,
3380 "QDIO reported an error, rc=%i\n", rc);
3381 QETH_CARD_TEXT(card, 2, "qcqherr");
3383 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3384 + count) % QDIO_MAX_BUFFERS_PER_Q;
3387 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3388 unsigned int qdio_err, int queue,
3389 int first_elem, int count,
3390 unsigned long card_ptr)
3392 struct qeth_card *card = (struct qeth_card *)card_ptr;
3394 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3395 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3397 if (qeth_is_cq(card, queue))
3398 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3400 qeth_schedule_recovery(card);
3403 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3404 unsigned int qdio_error, int __queue,
3405 int first_element, int count,
3406 unsigned long card_ptr)
3408 struct qeth_card *card = (struct qeth_card *) card_ptr;
3409 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3410 struct qeth_qdio_out_buffer *buffer;
3411 struct net_device *dev = card->dev;
3412 struct netdev_queue *txq;
3415 QETH_CARD_TEXT(card, 6, "qdouhdl");
3416 if (qdio_error & QDIO_ERROR_FATAL) {
3417 QETH_CARD_TEXT(card, 2, "achkcond");
3418 netif_tx_stop_all_queues(dev);
3419 qeth_schedule_recovery(card);
3423 for (i = first_element; i < (first_element + count); ++i) {
3424 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3425 buffer = queue->bufs[bidx];
3426 qeth_handle_send_error(card, buffer, qdio_error);
3428 if (queue->bufstates &&
3429 (queue->bufstates[bidx].flags &
3430 QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3431 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3433 if (atomic_cmpxchg(&buffer->state,
3434 QETH_QDIO_BUF_PRIMED,
3435 QETH_QDIO_BUF_PENDING) ==
3436 QETH_QDIO_BUF_PRIMED) {
3437 qeth_notify_skbs(queue, buffer,
3440 QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3442 /* prepare the queue slot for re-use: */
3443 qeth_scrub_qdio_buffer(buffer->buffer,
3444 queue->max_elements);
3445 if (qeth_init_qdio_out_buf(queue, bidx)) {
3446 QETH_CARD_TEXT(card, 2, "outofbuf");
3447 qeth_schedule_recovery(card);
3450 if (card->options.cq == QETH_CQ_ENABLED) {
3451 enum iucv_tx_notify n;
3453 n = qeth_compute_cq_notification(
3454 buffer->buffer->element[15].sflags, 0);
3455 qeth_notify_skbs(queue, buffer, n);
3458 qeth_clear_output_buffer(queue, buffer);
3460 qeth_cleanup_handled_pending(queue, bidx, 0);
3462 atomic_sub(count, &queue->used_buffers);
3463 /* check if we need to do something on this outbound queue */
3465 qeth_check_outbound_queue(queue);
3468 __queue = qeth_iqd_translate_txq(dev, __queue);
3469 txq = netdev_get_tx_queue(dev, __queue);
3470 /* xmit may have observed the full-condition, but not yet stopped the
3471 * txq. In which case the code below won't trigger. So before returning,
3472 * xmit will re-check the txq's fill level and wake it up if needed.
3474 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3475 netif_tx_wake_queue(txq);
3479 * Note: Function assumes that we have 4 outbound queues.
3481 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3483 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3486 switch (card->qdio.do_prio_queueing) {
3487 case QETH_PRIO_Q_ING_TOS:
3488 case QETH_PRIO_Q_ING_PREC:
3489 switch (qeth_get_ip_version(skb)) {
3491 tos = ipv4_get_dsfield(ip_hdr(skb));
3494 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3497 return card->qdio.default_out_queue;
3499 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3500 return ~tos >> 6 & 3;
3501 if (tos & IPTOS_MINCOST)
3503 if (tos & IPTOS_RELIABILITY)
3505 if (tos & IPTOS_THROUGHPUT)
3507 if (tos & IPTOS_LOWDELAY)
3510 case QETH_PRIO_Q_ING_SKB:
3511 if (skb->priority > 5)
3513 return ~skb->priority >> 1 & 3;
3514 case QETH_PRIO_Q_ING_VLAN:
3515 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3516 return ~ntohs(veth->h_vlan_TCI) >>
3517 (VLAN_PRIO_SHIFT + 1) & 3;
3522 return card->qdio.default_out_queue;
3524 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3527 * qeth_get_elements_for_frags() - find number of SBALEs for skb frags.
3530 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3531 * fragmented part of the SKB. Returns zero for linear SKB.
3533 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3535 int cnt, elements = 0;
3537 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3538 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3540 elements += qeth_get_elements_for_range(
3541 (addr_t)skb_frag_address(frag),
3542 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3548 * qeth_count_elements() - Counts the number of QDIO buffer elements needed
3549 * to transmit an skb.
3550 * @skb: the skb to operate on.
3551 * @data_offset: skip this part of the skb's linear data
3553 * Returns the number of pages, and thus QDIO buffer elements, needed to map the
3554 * skb's data (both its linear part and paged fragments).
3556 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3558 unsigned int elements = qeth_get_elements_for_frags(skb);
3559 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3560 addr_t start = (addr_t)skb->data + data_offset;
3563 elements += qeth_get_elements_for_range(start, end);
3566 EXPORT_SYMBOL_GPL(qeth_count_elements);
3568 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3572 * qeth_add_hw_header() - add a HW header to an skb.
3573 * @skb: skb that the HW header should be added to.
3574 * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3575 * it contains a valid pointer to a qeth_hdr.
3576 * @hdr_len: length of the HW header.
3577 * @proto_len: length of protocol headers that need to be in same page as the
3580 * Returns the pushed length. If the header can't be pushed on
3581 * (eg. because it would cross a page boundary), it is allocated from
3582 * the cache instead and 0 is returned.
3583 * The number of needed buffer elements is returned in @elements.
3584 * Error to create the hdr is indicated by returning with < 0.
3586 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3587 struct sk_buff *skb, struct qeth_hdr **hdr,
3588 unsigned int hdr_len, unsigned int proto_len,
3589 unsigned int *elements)
3591 const unsigned int contiguous = proto_len ? proto_len : 1;
3592 const unsigned int max_elements = queue->max_elements;
3593 unsigned int __elements;
3599 start = (addr_t)skb->data - hdr_len;
3600 end = (addr_t)skb->data;
3602 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3603 /* Push HW header into same page as first protocol header. */
3605 /* ... but TSO always needs a separate element for headers: */
3606 if (skb_is_gso(skb))
3607 __elements = 1 + qeth_count_elements(skb, proto_len);
3609 __elements = qeth_count_elements(skb, 0);
3610 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3611 /* Push HW header into preceding page, flush with skb->data. */
3613 __elements = 1 + qeth_count_elements(skb, 0);
3615 /* Use header cache, copy protocol headers up. */
3617 __elements = 1 + qeth_count_elements(skb, proto_len);
3620 /* Compress skb to fit into one IO buffer: */
3621 if (__elements > max_elements) {
3622 if (!skb_is_nonlinear(skb)) {
3623 /* Drop it, no easy way of shrinking it further. */
3624 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3625 max_elements, __elements, skb->len);
3629 rc = skb_linearize(skb);
3631 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3635 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3636 /* Linearization changed the layout, re-evaluate: */
3640 *elements = __elements;
3641 /* Add the header: */
3643 *hdr = skb_push(skb, hdr_len);
3647 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3649 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3652 /* Copy protocol headers behind HW header: */
3653 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3657 static void __qeth_fill_buffer(struct sk_buff *skb,
3658 struct qeth_qdio_out_buffer *buf,
3659 bool is_first_elem, unsigned int offset)
3661 struct qdio_buffer *buffer = buf->buffer;
3662 int element = buf->next_element_to_fill;
3663 int length = skb_headlen(skb) - offset;
3664 char *data = skb->data + offset;
3665 unsigned int elem_length, cnt;
3667 /* map linear part into buffer element(s) */
3668 while (length > 0) {
3669 elem_length = min_t(unsigned int, length,
3670 PAGE_SIZE - offset_in_page(data));
3672 buffer->element[element].addr = data;
3673 buffer->element[element].length = elem_length;
3674 length -= elem_length;
3675 if (is_first_elem) {
3676 is_first_elem = false;
3677 if (length || skb_is_nonlinear(skb))
3678 /* skb needs additional elements */
3679 buffer->element[element].eflags =
3680 SBAL_EFLAGS_FIRST_FRAG;
3682 buffer->element[element].eflags = 0;
3684 buffer->element[element].eflags =
3685 SBAL_EFLAGS_MIDDLE_FRAG;
3688 data += elem_length;
3692 /* map page frags into buffer element(s) */
3693 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3694 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3696 data = skb_frag_address(frag);
3697 length = skb_frag_size(frag);
3698 while (length > 0) {
3699 elem_length = min_t(unsigned int, length,
3700 PAGE_SIZE - offset_in_page(data));
3702 buffer->element[element].addr = data;
3703 buffer->element[element].length = elem_length;
3704 buffer->element[element].eflags =
3705 SBAL_EFLAGS_MIDDLE_FRAG;
3707 length -= elem_length;
3708 data += elem_length;
3713 if (buffer->element[element - 1].eflags)
3714 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3715 buf->next_element_to_fill = element;
3719 * qeth_fill_buffer() - map skb into an output buffer
3720 * @queue: QDIO queue to submit the buffer on
3721 * @buf: buffer to transport the skb
3722 * @skb: skb to map into the buffer
3723 * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated
3724 * from qeth_core_header_cache.
3725 * @offset: when mapping the skb, start at skb->data + offset
3726 * @hd_len: if > 0, build a dedicated header element of this size
3727 * flush: Prepare the buffer to be flushed, regardless of its fill level.
3729 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3730 struct qeth_qdio_out_buffer *buf,
3731 struct sk_buff *skb, struct qeth_hdr *hdr,
3732 unsigned int offset, unsigned int hd_len,
3735 struct qdio_buffer *buffer = buf->buffer;
3736 bool is_first_elem = true;
3738 __skb_queue_tail(&buf->skb_list, skb);
3740 /* build dedicated header element */
3742 int element = buf->next_element_to_fill;
3743 is_first_elem = false;
3745 buffer->element[element].addr = hdr;
3746 buffer->element[element].length = hd_len;
3747 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3748 /* remember to free cache-allocated qeth_hdr: */
3749 buf->is_header[element] = ((void *)hdr != skb->data);
3750 buf->next_element_to_fill++;
3753 __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3755 if (!queue->do_pack) {
3756 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
3758 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
3760 QETH_TXQ_STAT_INC(queue, skbs_pack);
3761 /* If the buffer still has free elements, keep using it. */
3763 buf->next_element_to_fill < queue->max_elements)
3767 /* flush out the buffer */
3768 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
3769 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3770 QDIO_MAX_BUFFERS_PER_Q;
3774 static int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue,
3775 struct sk_buff *skb, struct qeth_hdr *hdr,
3776 unsigned int offset, unsigned int hd_len)
3778 int index = queue->next_buf_to_fill;
3779 struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
3780 struct netdev_queue *txq;
3781 bool stopped = false;
3783 /* Just a sanity check, the wake/stop logic should ensure that we always
3784 * get a free buffer.
3786 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3789 txq = netdev_get_tx_queue(queue->card->dev, skb_get_queue_mapping(skb));
3791 if (atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3792 /* If a TX completion happens right _here_ and misses to wake
3793 * the txq, then our re-check below will catch the race.
3795 QETH_TXQ_STAT_INC(queue, stopped);
3796 netif_tx_stop_queue(txq);
3800 qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len, stopped);
3801 qeth_flush_buffers(queue, index, 1);
3803 if (stopped && !qeth_out_queue_is_full(queue))
3804 netif_tx_start_queue(txq);
3808 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3809 struct sk_buff *skb, struct qeth_hdr *hdr,
3810 unsigned int offset, unsigned int hd_len,
3811 int elements_needed)
3813 struct qeth_qdio_out_buffer *buffer;
3814 struct netdev_queue *txq;
3815 bool stopped = false;
3817 int flush_count = 0;
3822 /* spin until we get the queue ... */
3823 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3824 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3825 start_index = queue->next_buf_to_fill;
3826 buffer = queue->bufs[queue->next_buf_to_fill];
3828 /* Just a sanity check, the wake/stop logic should ensure that we always
3829 * get a free buffer.
3831 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3832 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3836 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3838 /* check if we need to switch packing state of this queue */
3839 qeth_switch_to_packing_if_needed(queue);
3840 if (queue->do_pack) {
3842 /* does packet fit in current buffer? */
3843 if (buffer->next_element_to_fill + elements_needed >
3844 queue->max_elements) {
3845 /* ... no -> set state PRIMED */
3846 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3848 queue->next_buf_to_fill =
3849 (queue->next_buf_to_fill + 1) %
3850 QDIO_MAX_BUFFERS_PER_Q;
3851 buffer = queue->bufs[queue->next_buf_to_fill];
3853 /* We stepped forward, so sanity-check again: */
3854 if (atomic_read(&buffer->state) !=
3855 QETH_QDIO_BUF_EMPTY) {
3856 qeth_flush_buffers(queue, start_index,
3858 atomic_set(&queue->state,
3859 QETH_OUT_Q_UNLOCKED);
3866 if (buffer->next_element_to_fill == 0 &&
3867 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3868 /* If a TX completion happens right _here_ and misses to wake
3869 * the txq, then our re-check below will catch the race.
3871 QETH_TXQ_STAT_INC(queue, stopped);
3872 netif_tx_stop_queue(txq);
3876 flush_count += qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len,
3879 qeth_flush_buffers(queue, start_index, flush_count);
3880 else if (!atomic_read(&queue->set_pci_flags_count))
3881 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3883 * queue->state will go from LOCKED -> UNLOCKED or from
3884 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
3885 * (switch packing state or flush buffer to get another pci flag out).
3886 * In that case we will enter this loop
3888 while (atomic_dec_return(&queue->state)) {
3889 start_index = queue->next_buf_to_fill;
3890 /* check if we can go back to non-packing state */
3891 tmp = qeth_switch_to_nonpacking_if_needed(queue);
3893 * check if we need to flush a packing buffer to get a pci
3894 * flag out on the queue
3896 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
3897 tmp = qeth_prep_flush_pack_buffer(queue);
3899 qeth_flush_buffers(queue, start_index, tmp);
3904 /* at this point the queue is UNLOCKED again */
3906 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
3908 if (stopped && !qeth_out_queue_is_full(queue))
3909 netif_tx_start_queue(txq);
3912 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
3914 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
3915 unsigned int payload_len, struct sk_buff *skb,
3916 unsigned int proto_len)
3918 struct qeth_hdr_ext_tso *ext = &hdr->ext;
3920 ext->hdr_tot_len = sizeof(*ext);
3921 ext->imb_hdr_no = 1;
3923 ext->hdr_version = 1;
3925 ext->payload_len = payload_len;
3926 ext->mss = skb_shinfo(skb)->gso_size;
3927 ext->dg_hdr_len = proto_len;
3930 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
3931 struct qeth_qdio_out_q *queue, int ipv,
3932 void (*fill_header)(struct qeth_qdio_out_q *queue,
3933 struct qeth_hdr *hdr, struct sk_buff *skb,
3934 int ipv, unsigned int data_len))
3936 unsigned int proto_len, hw_hdr_len;
3937 unsigned int frame_len = skb->len;
3938 bool is_tso = skb_is_gso(skb);
3939 unsigned int data_offset = 0;
3940 struct qeth_hdr *hdr = NULL;
3941 unsigned int hd_len = 0;
3942 unsigned int elements;
3947 hw_hdr_len = sizeof(struct qeth_hdr_tso);
3948 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3950 hw_hdr_len = sizeof(struct qeth_hdr);
3951 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
3954 rc = skb_cow_head(skb, hw_hdr_len);
3958 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
3962 if (is_tso || !push_len) {
3963 /* HW header needs its own buffer element. */
3964 hd_len = hw_hdr_len + proto_len;
3965 data_offset = push_len + proto_len;
3967 memset(hdr, 0, hw_hdr_len);
3968 fill_header(queue, hdr, skb, ipv, frame_len);
3970 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
3971 frame_len - proto_len, skb, proto_len);
3973 is_sg = skb_is_nonlinear(skb);
3975 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
3978 /* TODO: drop skb_orphan() once TX completion is fast enough */
3980 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
3985 QETH_TXQ_STAT_ADD(queue, buf_elements, elements);
3987 QETH_TXQ_STAT_INC(queue, skbs_sg);
3989 QETH_TXQ_STAT_INC(queue, skbs_tso);
3990 QETH_TXQ_STAT_ADD(queue, tso_bytes, frame_len);
3994 kmem_cache_free(qeth_core_header_cache, hdr);
3998 EXPORT_SYMBOL_GPL(qeth_xmit);
4000 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4001 struct qeth_reply *reply, unsigned long data)
4003 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4004 struct qeth_ipacmd_setadpparms *setparms;
4006 QETH_CARD_TEXT(card, 4, "prmadpcb");
4008 setparms = &(cmd->data.setadapterparms);
4009 if (qeth_setadpparms_inspect_rc(cmd)) {
4010 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4011 setparms->data.mode = SET_PROMISC_MODE_OFF;
4013 card->info.promisc_mode = setparms->data.mode;
4014 return (cmd->hdr.return_code) ? -EIO : 0;
4017 void qeth_setadp_promisc_mode(struct qeth_card *card)
4019 enum qeth_ipa_promisc_modes mode;
4020 struct net_device *dev = card->dev;
4021 struct qeth_cmd_buffer *iob;
4022 struct qeth_ipa_cmd *cmd;
4024 QETH_CARD_TEXT(card, 4, "setprom");
4026 if (((dev->flags & IFF_PROMISC) &&
4027 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4028 (!(dev->flags & IFF_PROMISC) &&
4029 (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4031 mode = SET_PROMISC_MODE_OFF;
4032 if (dev->flags & IFF_PROMISC)
4033 mode = SET_PROMISC_MODE_ON;
4034 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4036 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4037 SETADP_DATA_SIZEOF(mode));
4040 cmd = __ipa_cmd(iob);
4041 cmd->data.setadapterparms.data.mode = mode;
4042 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4044 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4046 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4047 struct qeth_reply *reply, unsigned long data)
4049 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4050 struct qeth_ipacmd_setadpparms *adp_cmd;
4052 QETH_CARD_TEXT(card, 4, "chgmaccb");
4053 if (qeth_setadpparms_inspect_rc(cmd))
4056 adp_cmd = &cmd->data.setadapterparms;
4057 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4058 return -EADDRNOTAVAIL;
4060 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4061 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4062 return -EADDRNOTAVAIL;
4064 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4068 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4071 struct qeth_cmd_buffer *iob;
4072 struct qeth_ipa_cmd *cmd;
4074 QETH_CARD_TEXT(card, 4, "chgmac");
4076 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4077 SETADP_DATA_SIZEOF(change_addr));
4080 cmd = __ipa_cmd(iob);
4081 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4082 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4083 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4084 card->dev->dev_addr);
4085 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4089 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4091 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4092 struct qeth_reply *reply, unsigned long data)
4094 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4095 struct qeth_set_access_ctrl *access_ctrl_req;
4096 int fallback = *(int *)reply->param;
4098 QETH_CARD_TEXT(card, 4, "setaccb");
4099 if (cmd->hdr.return_code)
4101 qeth_setadpparms_inspect_rc(cmd);
4103 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4104 QETH_CARD_TEXT_(card, 2, "rc=%d",
4105 cmd->data.setadapterparms.hdr.return_code);
4106 if (cmd->data.setadapterparms.hdr.return_code !=
4107 SET_ACCESS_CTRL_RC_SUCCESS)
4108 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4109 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4110 cmd->data.setadapterparms.hdr.return_code);
4111 switch (cmd->data.setadapterparms.hdr.return_code) {
4112 case SET_ACCESS_CTRL_RC_SUCCESS:
4113 if (card->options.isolation == ISOLATION_MODE_NONE) {
4114 dev_info(&card->gdev->dev,
4115 "QDIO data connection isolation is deactivated\n");
4117 dev_info(&card->gdev->dev,
4118 "QDIO data connection isolation is activated\n");
4121 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4122 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4125 card->options.isolation = card->options.prev_isolation;
4127 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4128 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4131 card->options.isolation = card->options.prev_isolation;
4133 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4134 dev_err(&card->gdev->dev, "Adapter does not "
4135 "support QDIO data connection isolation\n");
4137 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4138 dev_err(&card->gdev->dev,
4139 "Adapter is dedicated. "
4140 "QDIO data connection isolation not supported\n");
4142 card->options.isolation = card->options.prev_isolation;
4144 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4145 dev_err(&card->gdev->dev,
4146 "TSO does not permit QDIO data connection isolation\n");
4148 card->options.isolation = card->options.prev_isolation;
4150 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4151 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4152 "support reflective relay mode\n");
4154 card->options.isolation = card->options.prev_isolation;
4156 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4157 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4158 "enabled at the adjacent switch port");
4160 card->options.isolation = card->options.prev_isolation;
4162 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4163 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4164 "at the adjacent switch failed\n");
4167 /* this should never happen */
4169 card->options.isolation = card->options.prev_isolation;
4172 return (cmd->hdr.return_code) ? -EIO : 0;
4175 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4176 enum qeth_ipa_isolation_modes isolation, int fallback)
4179 struct qeth_cmd_buffer *iob;
4180 struct qeth_ipa_cmd *cmd;
4181 struct qeth_set_access_ctrl *access_ctrl_req;
4183 QETH_CARD_TEXT(card, 4, "setacctl");
4185 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4186 SETADP_DATA_SIZEOF(set_access_ctrl));
4189 cmd = __ipa_cmd(iob);
4190 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4191 access_ctrl_req->subcmd_code = isolation;
4193 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4195 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4199 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4203 QETH_CARD_TEXT(card, 4, "setactlo");
4205 if ((IS_OSD(card) || IS_OSX(card)) &&
4206 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4207 rc = qeth_setadpparms_set_access_ctrl(card,
4208 card->options.isolation, fallback);
4210 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4211 rc, CARD_DEVID(card));
4214 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4215 card->options.isolation = ISOLATION_MODE_NONE;
4217 dev_err(&card->gdev->dev, "Adapter does not "
4218 "support QDIO data connection isolation\n");
4223 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4225 void qeth_tx_timeout(struct net_device *dev)
4227 struct qeth_card *card;
4229 card = dev->ml_priv;
4230 QETH_CARD_TEXT(card, 4, "txtimeo");
4231 qeth_schedule_recovery(card);
4233 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4235 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4237 struct qeth_card *card = dev->ml_priv;
4241 case MII_BMCR: /* Basic mode control register */
4243 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4244 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4245 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4246 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4247 rc |= BMCR_SPEED100;
4249 case MII_BMSR: /* Basic mode status register */
4250 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4251 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4254 case MII_PHYSID1: /* PHYS ID 1 */
4255 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4257 rc = (rc >> 5) & 0xFFFF;
4259 case MII_PHYSID2: /* PHYS ID 2 */
4260 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4262 case MII_ADVERTISE: /* Advertisement control reg */
4265 case MII_LPA: /* Link partner ability reg */
4266 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4267 LPA_100BASE4 | LPA_LPACK;
4269 case MII_EXPANSION: /* Expansion register */
4271 case MII_DCOUNTER: /* disconnect counter */
4273 case MII_FCSCOUNTER: /* false carrier counter */
4275 case MII_NWAYTEST: /* N-way auto-neg test register */
4277 case MII_RERRCOUNTER: /* rx error counter */
4278 rc = card->stats.rx_errors;
4280 case MII_SREVISION: /* silicon revision */
4282 case MII_RESV1: /* reserved 1 */
4284 case MII_LBRERROR: /* loopback, rx, bypass error */
4286 case MII_PHYADDR: /* physical address */
4288 case MII_RESV2: /* reserved 2 */
4290 case MII_TPISTATUS: /* TPI status for 10mbps */
4292 case MII_NCONFIG: /* network interface config */
4300 static int qeth_snmp_command_cb(struct qeth_card *card,
4301 struct qeth_reply *reply, unsigned long sdata)
4303 struct qeth_ipa_cmd *cmd;
4304 struct qeth_arp_query_info *qinfo;
4305 unsigned char *data;
4309 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4311 cmd = (struct qeth_ipa_cmd *) sdata;
4312 data = (unsigned char *)((char *)cmd - reply->offset);
4313 qinfo = (struct qeth_arp_query_info *) reply->param;
4315 if (cmd->hdr.return_code) {
4316 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4319 if (cmd->data.setadapterparms.hdr.return_code) {
4320 cmd->hdr.return_code =
4321 cmd->data.setadapterparms.hdr.return_code;
4322 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4325 data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4326 if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4327 snmp_data = &cmd->data.setadapterparms.data.snmp;
4328 data_len -= offsetof(struct qeth_ipa_cmd,
4329 data.setadapterparms.data.snmp);
4331 snmp_data = &cmd->data.setadapterparms.data.snmp.request;
4332 data_len -= offsetof(struct qeth_ipa_cmd,
4333 data.setadapterparms.data.snmp.request);
4336 /* check if there is enough room in userspace */
4337 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4338 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4341 QETH_CARD_TEXT_(card, 4, "snore%i",
4342 cmd->data.setadapterparms.hdr.used_total);
4343 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4344 cmd->data.setadapterparms.hdr.seq_no);
4345 /*copy entries to user buffer*/
4346 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4347 qinfo->udata_offset += data_len;
4349 if (cmd->data.setadapterparms.hdr.seq_no <
4350 cmd->data.setadapterparms.hdr.used_total)
4355 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4357 struct qeth_snmp_ureq __user *ureq;
4358 struct qeth_cmd_buffer *iob;
4359 unsigned int req_len;
4360 struct qeth_arp_query_info qinfo = {0, };
4363 QETH_CARD_TEXT(card, 3, "snmpcmd");
4365 if (IS_VM_NIC(card))
4368 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4372 ureq = (struct qeth_snmp_ureq __user *) udata;
4373 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4374 get_user(req_len, &ureq->hdr.req_len))
4377 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4381 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4382 &ureq->cmd, req_len)) {
4387 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4392 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4394 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4396 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4397 CARD_DEVID(card), rc);
4399 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4407 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4408 struct qeth_reply *reply, unsigned long data)
4410 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4411 struct qeth_qoat_priv *priv;
4415 QETH_CARD_TEXT(card, 3, "qoatcb");
4416 if (qeth_setadpparms_inspect_rc(cmd))
4419 priv = (struct qeth_qoat_priv *)reply->param;
4420 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4421 resdata = (char *)data + 28;
4423 if (resdatalen > (priv->buffer_len - priv->response_len))
4426 memcpy((priv->buffer + priv->response_len), resdata,
4428 priv->response_len += resdatalen;
4430 if (cmd->data.setadapterparms.hdr.seq_no <
4431 cmd->data.setadapterparms.hdr.used_total)
4436 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4439 struct qeth_cmd_buffer *iob;
4440 struct qeth_ipa_cmd *cmd;
4441 struct qeth_query_oat *oat_req;
4442 struct qeth_query_oat_data oat_data;
4443 struct qeth_qoat_priv priv;
4446 QETH_CARD_TEXT(card, 3, "qoatcmd");
4448 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4453 if (copy_from_user(&oat_data, udata,
4454 sizeof(struct qeth_query_oat_data))) {
4459 priv.buffer_len = oat_data.buffer_len;
4460 priv.response_len = 0;
4461 priv.buffer = vzalloc(oat_data.buffer_len);
4467 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4468 SETADP_DATA_SIZEOF(query_oat));
4473 cmd = __ipa_cmd(iob);
4474 oat_req = &cmd->data.setadapterparms.data.query_oat;
4475 oat_req->subcmd_code = oat_data.command;
4477 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4480 if (is_compat_task())
4481 tmp = compat_ptr(oat_data.ptr);
4483 tmp = (void __user *)(unsigned long)oat_data.ptr;
4485 if (copy_to_user(tmp, priv.buffer,
4486 priv.response_len)) {
4491 oat_data.response_len = priv.response_len;
4493 if (copy_to_user(udata, &oat_data,
4494 sizeof(struct qeth_query_oat_data)))
4504 static int qeth_query_card_info_cb(struct qeth_card *card,
4505 struct qeth_reply *reply, unsigned long data)
4507 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4508 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4509 struct qeth_query_card_info *card_info;
4511 QETH_CARD_TEXT(card, 2, "qcrdincb");
4512 if (qeth_setadpparms_inspect_rc(cmd))
4515 card_info = &cmd->data.setadapterparms.data.card_info;
4516 carrier_info->card_type = card_info->card_type;
4517 carrier_info->port_mode = card_info->port_mode;
4518 carrier_info->port_speed = card_info->port_speed;
4522 int qeth_query_card_info(struct qeth_card *card,
4523 struct carrier_info *carrier_info)
4525 struct qeth_cmd_buffer *iob;
4527 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4528 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4530 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4533 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4534 (void *)carrier_info);
4538 * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4539 * @card: pointer to a qeth_card
4542 * 0, if a MAC address has been set for the card's netdevice
4543 * a return code, for various error conditions
4545 int qeth_vm_request_mac(struct qeth_card *card)
4547 struct diag26c_mac_resp *response;
4548 struct diag26c_mac_req *request;
4549 struct ccw_dev_id id;
4552 QETH_CARD_TEXT(card, 2, "vmreqmac");
4554 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4555 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4556 if (!request || !response) {
4561 ccw_device_get_id(CARD_DDEV(card), &id);
4562 request->resp_buf_len = sizeof(*response);
4563 request->resp_version = DIAG26C_VERSION2;
4564 request->op_code = DIAG26C_GET_MAC;
4565 request->devno = id.devno;
4567 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4568 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4569 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4572 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4574 if (request->resp_buf_len < sizeof(*response) ||
4575 response->version != request->resp_version) {
4577 QETH_CARD_TEXT(card, 2, "badresp");
4578 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4579 sizeof(request->resp_buf_len));
4580 } else if (!is_valid_ether_addr(response->mac)) {
4582 QETH_CARD_TEXT(card, 2, "badmac");
4583 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4585 ether_addr_copy(card->dev->dev_addr, response->mac);
4593 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4595 static void qeth_determine_capabilities(struct qeth_card *card)
4598 struct ccw_device *ddev;
4599 int ddev_offline = 0;
4601 QETH_CARD_TEXT(card, 2, "detcapab");
4602 ddev = CARD_DDEV(card);
4603 if (!ddev->online) {
4605 rc = ccw_device_set_online(ddev);
4607 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4612 rc = qeth_read_conf_data(card);
4614 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4615 CARD_DEVID(card), rc);
4616 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4620 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4622 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4624 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4625 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4626 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4627 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4628 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
4629 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4630 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4631 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4632 dev_info(&card->gdev->dev,
4633 "Completion Queueing supported\n");
4635 card->options.cq = QETH_CQ_NOTAVAILABLE;
4640 if (ddev_offline == 1)
4641 ccw_device_set_offline(ddev);
4646 static void qeth_qdio_establish_cq(struct qeth_card *card,
4647 struct qdio_buffer **in_sbal_ptrs,
4648 void (**queue_start_poll)
4649 (struct ccw_device *, int,
4654 if (card->options.cq == QETH_CQ_ENABLED) {
4655 int offset = QDIO_MAX_BUFFERS_PER_Q *
4656 (card->qdio.no_in_queues - 1);
4657 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4658 in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4659 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4662 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4666 static int qeth_qdio_establish(struct qeth_card *card)
4668 struct qdio_initialize init_data;
4669 char *qib_param_field;
4670 struct qdio_buffer **in_sbal_ptrs;
4671 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4672 struct qdio_buffer **out_sbal_ptrs;
4676 QETH_CARD_TEXT(card, 2, "qdioest");
4678 qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
4680 if (!qib_param_field) {
4682 goto out_free_nothing;
4685 qeth_create_qib_param_field(card, qib_param_field);
4686 qeth_create_qib_param_field_blkt(card, qib_param_field);
4688 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4691 if (!in_sbal_ptrs) {
4693 goto out_free_qib_param;
4695 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4696 in_sbal_ptrs[i] = (struct qdio_buffer *)
4697 virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4700 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4702 if (!queue_start_poll) {
4704 goto out_free_in_sbals;
4706 for (i = 0; i < card->qdio.no_in_queues; ++i)
4707 queue_start_poll[i] = qeth_qdio_start_poll;
4709 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4712 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4715 if (!out_sbal_ptrs) {
4717 goto out_free_queue_start_poll;
4719 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4720 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
4721 out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4722 card->qdio.out_qs[i]->bufs[j]->buffer);
4725 memset(&init_data, 0, sizeof(struct qdio_initialize));
4726 init_data.cdev = CARD_DDEV(card);
4727 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4729 init_data.qib_param_field_format = 0;
4730 init_data.qib_param_field = qib_param_field;
4731 init_data.no_input_qs = card->qdio.no_in_queues;
4732 init_data.no_output_qs = card->qdio.no_out_queues;
4733 init_data.input_handler = qeth_qdio_input_handler;
4734 init_data.output_handler = qeth_qdio_output_handler;
4735 init_data.queue_start_poll_array = queue_start_poll;
4736 init_data.int_parm = (unsigned long) card;
4737 init_data.input_sbal_addr_array = in_sbal_ptrs;
4738 init_data.output_sbal_addr_array = out_sbal_ptrs;
4739 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4740 init_data.scan_threshold = IS_IQD(card) ? 1 : 32;
4742 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4743 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4744 rc = qdio_allocate(&init_data);
4746 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4749 rc = qdio_establish(&init_data);
4751 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4752 qdio_free(CARD_DDEV(card));
4756 switch (card->options.cq) {
4757 case QETH_CQ_ENABLED:
4758 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4760 case QETH_CQ_DISABLED:
4761 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4767 kfree(out_sbal_ptrs);
4768 out_free_queue_start_poll:
4769 kfree(queue_start_poll);
4771 kfree(in_sbal_ptrs);
4773 kfree(qib_param_field);
4778 static void qeth_core_free_card(struct qeth_card *card)
4780 QETH_CARD_TEXT(card, 2, "freecrd");
4781 qeth_clean_channel(&card->read);
4782 qeth_clean_channel(&card->write);
4783 qeth_clean_channel(&card->data);
4784 qeth_put_cmd(card->read_cmd);
4785 destroy_workqueue(card->event_wq);
4786 qeth_free_qdio_queues(card);
4787 unregister_service_level(&card->qeth_service_level);
4788 dev_set_drvdata(&card->gdev->dev, NULL);
4792 void qeth_trace_features(struct qeth_card *card)
4794 QETH_CARD_TEXT(card, 2, "features");
4795 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4796 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4797 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4798 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4799 sizeof(card->info.diagass_support));
4801 EXPORT_SYMBOL_GPL(qeth_trace_features);
4803 static struct ccw_device_id qeth_ids[] = {
4804 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4805 .driver_info = QETH_CARD_TYPE_OSD},
4806 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4807 .driver_info = QETH_CARD_TYPE_IQD},
4808 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4809 .driver_info = QETH_CARD_TYPE_OSN},
4810 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4811 .driver_info = QETH_CARD_TYPE_OSM},
4812 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4813 .driver_info = QETH_CARD_TYPE_OSX},
4816 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4818 static struct ccw_driver qeth_ccw_driver = {
4820 .owner = THIS_MODULE,
4824 .probe = ccwgroup_probe_ccwdev,
4825 .remove = ccwgroup_remove_ccwdev,
4828 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4833 QETH_CARD_TEXT(card, 2, "hrdsetup");
4834 atomic_set(&card->force_alloc_skb, 0);
4835 rc = qeth_update_from_chp_desc(card);
4840 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4842 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
4843 ccw_device_set_offline(CARD_DDEV(card));
4844 ccw_device_set_offline(CARD_WDEV(card));
4845 ccw_device_set_offline(CARD_RDEV(card));
4846 qdio_free(CARD_DDEV(card));
4847 rc = ccw_device_set_online(CARD_RDEV(card));
4850 rc = ccw_device_set_online(CARD_WDEV(card));
4853 rc = ccw_device_set_online(CARD_DDEV(card));
4857 if (rc == -ERESTARTSYS) {
4858 QETH_CARD_TEXT(card, 2, "break1");
4861 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4867 qeth_determine_capabilities(card);
4868 qeth_init_tokens(card);
4869 qeth_init_func_level(card);
4871 rc = qeth_idx_activate_read_channel(card);
4873 QETH_CARD_TEXT(card, 2, "break2");
4876 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4883 rc = qeth_idx_activate_write_channel(card);
4885 QETH_CARD_TEXT(card, 2, "break3");
4888 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4894 card->read_or_write_problem = 0;
4895 rc = qeth_mpc_initialize(card);
4897 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4901 rc = qeth_send_startlan(card);
4903 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4904 if (rc == -ENETDOWN) {
4905 dev_warn(&card->gdev->dev, "The LAN is offline\n");
4906 *carrier_ok = false;
4914 card->options.ipa4.supported_funcs = 0;
4915 card->options.ipa6.supported_funcs = 0;
4916 card->options.adp.supported_funcs = 0;
4917 card->options.sbp.supported_funcs = 0;
4918 card->info.diagass_support = 0;
4919 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
4922 if (qeth_is_supported(card, IPA_IPV6)) {
4923 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
4927 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
4928 rc = qeth_query_setadapterparms(card);
4930 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
4934 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
4935 rc = qeth_query_setdiagass(card);
4937 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
4943 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
4944 "an error on the device\n");
4945 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
4946 CARD_DEVID(card), rc);
4949 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
4951 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
4952 struct sk_buff *skb, int offset, int data_len)
4954 struct page *page = virt_to_page(element->addr);
4955 unsigned int next_frag;
4957 /* first fill the linear space */
4959 unsigned int linear = min(data_len, skb_tailroom(skb));
4961 skb_put_data(skb, element->addr + offset, linear);
4966 /* fall through to add page frag for remaining data */
4969 next_frag = skb_shinfo(skb)->nr_frags;
4971 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
4974 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
4976 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
4979 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4980 struct qeth_qdio_buffer *qethbuffer,
4981 struct qdio_buffer_element **__element, int *__offset,
4982 struct qeth_hdr **hdr)
4984 struct qdio_buffer_element *element = *__element;
4985 struct qdio_buffer *buffer = qethbuffer->buffer;
4986 int offset = *__offset;
4987 struct sk_buff *skb;
4994 /* qeth_hdr must not cross element boundaries */
4995 while (element->length < offset + sizeof(struct qeth_hdr)) {
4996 if (qeth_is_last_sbale(element))
5001 *hdr = element->addr + offset;
5003 offset += sizeof(struct qeth_hdr);
5004 switch ((*hdr)->hdr.l2.id) {
5005 case QETH_HEADER_TYPE_LAYER2:
5006 skb_len = (*hdr)->hdr.l2.pkt_length;
5008 case QETH_HEADER_TYPE_LAYER3:
5009 skb_len = (*hdr)->hdr.l3.length;
5010 headroom = ETH_HLEN;
5012 case QETH_HEADER_TYPE_OSN:
5013 skb_len = (*hdr)->hdr.osn.pdu_length;
5014 headroom = sizeof(struct qeth_hdr);
5023 if (((skb_len >= card->options.rx_sg_cb) &&
5025 (!atomic_read(&card->force_alloc_skb))) ||
5026 (card->options.cq == QETH_CQ_ENABLED))
5029 if (use_rx_sg && qethbuffer->rx_skb) {
5030 /* QETH_CQ_ENABLED only: */
5031 skb = qethbuffer->rx_skb;
5032 qethbuffer->rx_skb = NULL;
5034 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5036 skb = napi_alloc_skb(&card->napi, linear + headroom);
5041 skb_reserve(skb, headroom);
5043 data_ptr = element->addr + offset;
5045 data_len = min(skb_len, (int)(element->length - offset));
5048 qeth_create_skb_frag(element, skb, offset,
5051 skb_put_data(skb, data_ptr, data_len);
5053 skb_len -= data_len;
5055 if (qeth_is_last_sbale(element)) {
5056 QETH_CARD_TEXT(card, 4, "unexeob");
5057 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5058 dev_kfree_skb_any(skb);
5059 QETH_CARD_STAT_INC(card, rx_errors);
5064 data_ptr = element->addr;
5069 *__element = element;
5072 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5073 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5074 skb_shinfo(skb)->nr_frags);
5078 if (net_ratelimit()) {
5079 QETH_CARD_TEXT(card, 2, "noskbmem");
5081 QETH_CARD_STAT_INC(card, rx_dropped);
5084 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5086 int qeth_poll(struct napi_struct *napi, int budget)
5088 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5090 struct qeth_qdio_buffer *buffer;
5092 int new_budget = budget;
5095 if (!card->rx.b_count) {
5096 card->rx.qdio_err = 0;
5097 card->rx.b_count = qdio_get_next_buffers(
5098 card->data.ccwdev, 0, &card->rx.b_index,
5099 &card->rx.qdio_err);
5100 if (card->rx.b_count <= 0) {
5101 card->rx.b_count = 0;
5104 card->rx.b_element =
5105 &card->qdio.in_q->bufs[card->rx.b_index]
5106 .buffer->element[0];
5107 card->rx.e_offset = 0;
5110 while (card->rx.b_count) {
5111 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5112 if (!(card->rx.qdio_err &&
5113 qeth_check_qdio_errors(card, buffer->buffer,
5114 card->rx.qdio_err, "qinerr")))
5116 card->discipline->process_rx_buffer(
5117 card, new_budget, &done);
5122 QETH_CARD_STAT_INC(card, rx_bufs);
5123 qeth_put_buffer_pool_entry(card,
5124 buffer->pool_entry);
5125 qeth_queue_input_buffer(card, card->rx.b_index);
5127 if (card->rx.b_count) {
5129 (card->rx.b_index + 1) %
5130 QDIO_MAX_BUFFERS_PER_Q;
5131 card->rx.b_element =
5133 ->bufs[card->rx.b_index]
5134 .buffer->element[0];
5135 card->rx.e_offset = 0;
5139 if (work_done >= budget)
5142 new_budget = budget - work_done;
5146 napi_complete_done(napi, work_done);
5147 if (qdio_start_irq(card->data.ccwdev, 0))
5148 napi_schedule(&card->napi);
5152 EXPORT_SYMBOL_GPL(qeth_poll);
5154 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5156 if (!cmd->hdr.return_code)
5157 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5158 return cmd->hdr.return_code;
5161 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5162 struct qeth_reply *reply,
5165 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5166 struct qeth_ipa_caps *caps = reply->param;
5168 if (qeth_setassparms_inspect_rc(cmd))
5171 caps->supported = cmd->data.setassparms.data.caps.supported;
5172 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5176 int qeth_setassparms_cb(struct qeth_card *card,
5177 struct qeth_reply *reply, unsigned long data)
5179 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5181 QETH_CARD_TEXT(card, 4, "defadpcb");
5183 if (cmd->hdr.return_code)
5186 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5187 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5188 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5189 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5190 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5193 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5195 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5196 enum qeth_ipa_funcs ipa_func,
5198 unsigned int data_length,
5199 enum qeth_prot_versions prot)
5201 struct qeth_ipacmd_setassparms *setassparms;
5202 struct qeth_ipacmd_setassparms_hdr *hdr;
5203 struct qeth_cmd_buffer *iob;
5205 QETH_CARD_TEXT(card, 4, "getasscm");
5206 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5208 offsetof(struct qeth_ipacmd_setassparms,
5213 setassparms = &__ipa_cmd(iob)->data.setassparms;
5214 setassparms->assist_no = ipa_func;
5216 hdr = &setassparms->hdr;
5217 hdr->length = sizeof(*hdr) + data_length;
5218 hdr->command_code = cmd_code;
5221 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5223 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5224 enum qeth_ipa_funcs ipa_func,
5225 u16 cmd_code, u32 *data,
5226 enum qeth_prot_versions prot)
5228 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
5229 struct qeth_cmd_buffer *iob;
5231 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5232 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5237 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
5238 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
5240 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5242 static void qeth_unregister_dbf_views(void)
5245 for (x = 0; x < QETH_DBF_INFOS; x++) {
5246 debug_unregister(qeth_dbf[x].id);
5247 qeth_dbf[x].id = NULL;
5251 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5253 char dbf_txt_buf[32];
5256 if (!debug_level_enabled(id, level))
5258 va_start(args, fmt);
5259 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5261 debug_text_event(id, level, dbf_txt_buf);
5263 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5265 static int qeth_register_dbf_views(void)
5270 for (x = 0; x < QETH_DBF_INFOS; x++) {
5271 /* register the areas */
5272 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5276 if (qeth_dbf[x].id == NULL) {
5277 qeth_unregister_dbf_views();
5281 /* register a view */
5282 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5284 qeth_unregister_dbf_views();
5288 /* set a passing level */
5289 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5295 static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */
5297 int qeth_core_load_discipline(struct qeth_card *card,
5298 enum qeth_discipline_id discipline)
5300 mutex_lock(&qeth_mod_mutex);
5301 switch (discipline) {
5302 case QETH_DISCIPLINE_LAYER3:
5303 card->discipline = try_then_request_module(
5304 symbol_get(qeth_l3_discipline), "qeth_l3");
5306 case QETH_DISCIPLINE_LAYER2:
5307 card->discipline = try_then_request_module(
5308 symbol_get(qeth_l2_discipline), "qeth_l2");
5313 mutex_unlock(&qeth_mod_mutex);
5315 if (!card->discipline) {
5316 dev_err(&card->gdev->dev, "There is no kernel module to "
5317 "support discipline %d\n", discipline);
5321 card->options.layer = discipline;
5325 void qeth_core_free_discipline(struct qeth_card *card)
5327 if (IS_LAYER2(card))
5328 symbol_put(qeth_l2_discipline);
5330 symbol_put(qeth_l3_discipline);
5331 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5332 card->discipline = NULL;
5335 const struct device_type qeth_generic_devtype = {
5336 .name = "qeth_generic",
5337 .groups = qeth_generic_attr_groups,
5339 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5341 static const struct device_type qeth_osn_devtype = {
5343 .groups = qeth_osn_attr_groups,
5346 #define DBF_NAME_LEN 20
5348 struct qeth_dbf_entry {
5349 char dbf_name[DBF_NAME_LEN];
5350 debug_info_t *dbf_info;
5351 struct list_head dbf_list;
5354 static LIST_HEAD(qeth_dbf_list);
5355 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5357 static debug_info_t *qeth_get_dbf_entry(char *name)
5359 struct qeth_dbf_entry *entry;
5360 debug_info_t *rc = NULL;
5362 mutex_lock(&qeth_dbf_list_mutex);
5363 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5364 if (strcmp(entry->dbf_name, name) == 0) {
5365 rc = entry->dbf_info;
5369 mutex_unlock(&qeth_dbf_list_mutex);
5373 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5375 struct qeth_dbf_entry *new_entry;
5377 card->debug = debug_register(name, 2, 1, 8);
5379 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5382 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5384 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5387 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5388 new_entry->dbf_info = card->debug;
5389 mutex_lock(&qeth_dbf_list_mutex);
5390 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5391 mutex_unlock(&qeth_dbf_list_mutex);
5396 debug_unregister(card->debug);
5401 static void qeth_clear_dbf_list(void)
5403 struct qeth_dbf_entry *entry, *tmp;
5405 mutex_lock(&qeth_dbf_list_mutex);
5406 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5407 list_del(&entry->dbf_list);
5408 debug_unregister(entry->dbf_info);
5411 mutex_unlock(&qeth_dbf_list_mutex);
5414 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5416 struct net_device *dev;
5418 switch (card->info.type) {
5419 case QETH_CARD_TYPE_IQD:
5420 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5421 ether_setup, QETH_MAX_QUEUES, 1);
5423 case QETH_CARD_TYPE_OSM:
5424 dev = alloc_etherdev(0);
5426 case QETH_CARD_TYPE_OSN:
5427 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5430 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
5436 dev->ml_priv = card;
5437 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5438 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5439 /* initialized when device first goes online: */
5442 SET_NETDEV_DEV(dev, &card->gdev->dev);
5443 netif_carrier_off(dev);
5446 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5448 dev->ethtool_ops = &qeth_ethtool_ops;
5449 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5450 dev->hw_features |= NETIF_F_SG;
5451 dev->vlan_features |= NETIF_F_SG;
5453 dev->features |= NETIF_F_SG;
5454 if (netif_set_real_num_tx_queues(dev,
5455 QETH_IQD_MIN_TXQ)) {
5465 struct net_device *qeth_clone_netdev(struct net_device *orig)
5467 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5472 clone->dev_port = orig->dev_port;
5476 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5478 struct qeth_card *card;
5481 enum qeth_discipline_id enforced_disc;
5482 char dbf_name[DBF_NAME_LEN];
5484 QETH_DBF_TEXT(SETUP, 2, "probedev");
5487 if (!get_device(dev))
5490 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5492 card = qeth_alloc_card(gdev);
5494 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5499 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5500 dev_name(&gdev->dev));
5501 card->debug = qeth_get_dbf_entry(dbf_name);
5503 rc = qeth_add_dbf_entry(card, dbf_name);
5508 qeth_setup_card(card);
5509 card->dev = qeth_alloc_netdev(card);
5515 card->qdio.no_out_queues = card->dev->num_tx_queues;
5516 rc = qeth_update_from_chp_desc(card);
5519 qeth_determine_capabilities(card);
5520 qeth_set_blkt_defaults(card);
5522 enforced_disc = qeth_enforce_discipline(card);
5523 switch (enforced_disc) {
5524 case QETH_DISCIPLINE_UNDETERMINED:
5525 gdev->dev.type = &qeth_generic_devtype;
5528 card->info.layer_enforced = true;
5529 rc = qeth_core_load_discipline(card, enforced_disc);
5533 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
5534 card->discipline->devtype;
5535 rc = card->discipline->setup(card->gdev);
5544 qeth_core_free_discipline(card);
5547 free_netdev(card->dev);
5549 qeth_core_free_card(card);
5555 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5557 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5559 QETH_CARD_TEXT(card, 2, "removedv");
5561 if (card->discipline) {
5562 card->discipline->remove(gdev);
5563 qeth_core_free_discipline(card);
5566 free_netdev(card->dev);
5567 qeth_core_free_card(card);
5568 put_device(&gdev->dev);
5571 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5573 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5575 enum qeth_discipline_id def_discipline;
5577 if (!card->discipline) {
5578 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
5579 QETH_DISCIPLINE_LAYER2;
5580 rc = qeth_core_load_discipline(card, def_discipline);
5583 rc = card->discipline->setup(card->gdev);
5585 qeth_core_free_discipline(card);
5589 rc = card->discipline->set_online(gdev);
5594 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5596 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5597 return card->discipline->set_offline(gdev);
5600 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5602 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5603 qeth_set_allowed_threads(card, 0, 1);
5604 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5605 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5606 qeth_qdio_clear_card(card, 0);
5607 qeth_drain_output_queues(card);
5608 qdio_free(CARD_DDEV(card));
5611 static int qeth_suspend(struct ccwgroup_device *gdev)
5613 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5615 qeth_set_allowed_threads(card, 0, 1);
5616 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
5617 if (gdev->state == CCWGROUP_OFFLINE)
5620 card->discipline->set_offline(gdev);
5624 static int qeth_resume(struct ccwgroup_device *gdev)
5626 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5629 rc = card->discipline->set_online(gdev);
5631 qeth_set_allowed_threads(card, 0xffffffff, 0);
5633 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
5637 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5642 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5645 return err ? err : count;
5647 static DRIVER_ATTR_WO(group);
5649 static struct attribute *qeth_drv_attrs[] = {
5650 &driver_attr_group.attr,
5653 static struct attribute_group qeth_drv_attr_group = {
5654 .attrs = qeth_drv_attrs,
5656 static const struct attribute_group *qeth_drv_attr_groups[] = {
5657 &qeth_drv_attr_group,
5661 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5663 .groups = qeth_drv_attr_groups,
5664 .owner = THIS_MODULE,
5667 .ccw_driver = &qeth_ccw_driver,
5668 .setup = qeth_core_probe_device,
5669 .remove = qeth_core_remove_device,
5670 .set_online = qeth_core_set_online,
5671 .set_offline = qeth_core_set_offline,
5672 .shutdown = qeth_core_shutdown,
5675 .freeze = qeth_suspend,
5676 .thaw = qeth_resume,
5677 .restore = qeth_resume,
5680 struct qeth_card *qeth_get_card_by_busid(char *bus_id)
5682 struct ccwgroup_device *gdev;
5683 struct qeth_card *card;
5685 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
5689 card = dev_get_drvdata(&gdev->dev);
5690 put_device(&gdev->dev);
5693 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
5695 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5697 struct qeth_card *card = dev->ml_priv;
5698 struct mii_ioctl_data *mii_data;
5705 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5706 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5708 case SIOC_QETH_GET_CARD_TYPE:
5709 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
5714 mii_data = if_mii(rq);
5715 mii_data->phy_id = 0;
5718 mii_data = if_mii(rq);
5719 if (mii_data->phy_id != 0)
5722 mii_data->val_out = qeth_mdio_read(dev,
5723 mii_data->phy_id, mii_data->reg_num);
5725 case SIOC_QETH_QUERY_OAT:
5726 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5729 if (card->discipline->do_ioctl)
5730 rc = card->discipline->do_ioctl(dev, rq, cmd);
5735 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5738 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5740 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
5743 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5744 u32 *features = reply->param;
5746 if (qeth_setassparms_inspect_rc(cmd))
5749 *features = cmd->data.setassparms.data.flags_32bit;
5753 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5754 enum qeth_prot_versions prot)
5756 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
5760 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5761 enum qeth_prot_versions prot)
5763 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
5764 struct qeth_cmd_buffer *iob;
5765 struct qeth_ipa_caps caps;
5769 /* some L3 HW requires combined L3+L4 csum offload: */
5770 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
5771 cstype == IPA_OUTBOUND_CHECKSUM)
5772 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
5774 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
5779 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
5783 if ((required_features & features) != required_features) {
5784 qeth_set_csum_off(card, cstype, prot);
5788 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
5789 SETASS_DATA_SIZEOF(flags_32bit),
5792 qeth_set_csum_off(card, cstype, prot);
5796 if (features & QETH_IPA_CHECKSUM_LP2LP)
5797 required_features |= QETH_IPA_CHECKSUM_LP2LP;
5798 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
5799 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5801 qeth_set_csum_off(card, cstype, prot);
5805 if (!qeth_ipa_caps_supported(&caps, required_features) ||
5806 !qeth_ipa_caps_enabled(&caps, required_features)) {
5807 qeth_set_csum_off(card, cstype, prot);
5811 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
5812 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
5813 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
5814 cstype == IPA_OUTBOUND_CHECKSUM)
5815 dev_warn(&card->gdev->dev,
5816 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
5817 QETH_CARD_IFNAME(card));
5821 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
5822 enum qeth_prot_versions prot)
5824 return on ? qeth_set_csum_on(card, cstype, prot) :
5825 qeth_set_csum_off(card, cstype, prot);
5828 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
5831 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5832 struct qeth_tso_start_data *tso_data = reply->param;
5834 if (qeth_setassparms_inspect_rc(cmd))
5837 tso_data->mss = cmd->data.setassparms.data.tso.mss;
5838 tso_data->supported = cmd->data.setassparms.data.tso.supported;
5842 static int qeth_set_tso_off(struct qeth_card *card,
5843 enum qeth_prot_versions prot)
5845 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
5846 IPA_CMD_ASS_STOP, NULL, prot);
5849 static int qeth_set_tso_on(struct qeth_card *card,
5850 enum qeth_prot_versions prot)
5852 struct qeth_tso_start_data tso_data;
5853 struct qeth_cmd_buffer *iob;
5854 struct qeth_ipa_caps caps;
5857 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
5858 IPA_CMD_ASS_START, 0, prot);
5862 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
5866 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
5867 qeth_set_tso_off(card, prot);
5871 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
5873 SETASS_DATA_SIZEOF(caps), prot);
5875 qeth_set_tso_off(card, prot);
5879 /* enable TSO capability */
5880 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
5881 QETH_IPA_LARGE_SEND_TCP;
5882 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5884 qeth_set_tso_off(card, prot);
5888 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
5889 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
5890 qeth_set_tso_off(card, prot);
5894 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
5899 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
5900 enum qeth_prot_versions prot)
5902 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
5905 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
5907 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
5910 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
5911 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
5913 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
5914 /* no/one Offload Assist available, so the rc is trivial */
5917 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
5921 /* enable: success if any Assist is active */
5922 return (rc_ipv6) ? rc_ipv4 : 0;
5924 /* disable: failure if any Assist is still active */
5925 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
5929 * qeth_enable_hw_features() - (Re-)Enable HW functions for device features
5930 * @dev: a net_device
5932 void qeth_enable_hw_features(struct net_device *dev)
5934 struct qeth_card *card = dev->ml_priv;
5935 netdev_features_t features;
5937 features = dev->features;
5938 /* force-off any feature that might need an IPA sequence.
5939 * netdev_update_features() will restart them.
5941 dev->features &= ~dev->hw_features;
5942 /* toggle VLAN filter, so that VIDs are re-programmed: */
5943 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
5944 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
5945 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
5947 netdev_update_features(dev);
5948 if (features != dev->features)
5949 dev_warn(&card->gdev->dev,
5950 "Device recovery failed to restore all offload features\n");
5952 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
5954 int qeth_set_features(struct net_device *dev, netdev_features_t features)
5956 struct qeth_card *card = dev->ml_priv;
5957 netdev_features_t changed = dev->features ^ features;
5960 QETH_CARD_TEXT(card, 2, "setfeat");
5961 QETH_CARD_HEX(card, 2, &features, sizeof(features));
5963 if ((changed & NETIF_F_IP_CSUM)) {
5964 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
5965 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
5967 changed ^= NETIF_F_IP_CSUM;
5969 if (changed & NETIF_F_IPV6_CSUM) {
5970 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
5971 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
5973 changed ^= NETIF_F_IPV6_CSUM;
5975 if (changed & NETIF_F_RXCSUM) {
5976 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
5978 changed ^= NETIF_F_RXCSUM;
5980 if (changed & NETIF_F_TSO) {
5981 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
5984 changed ^= NETIF_F_TSO;
5986 if (changed & NETIF_F_TSO6) {
5987 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
5990 changed ^= NETIF_F_TSO6;
5993 /* everything changed successfully? */
5994 if ((dev->features ^ features) == changed)
5996 /* something went wrong. save changed features and return error */
5997 dev->features ^= changed;
6000 EXPORT_SYMBOL_GPL(qeth_set_features);
6002 netdev_features_t qeth_fix_features(struct net_device *dev,
6003 netdev_features_t features)
6005 struct qeth_card *card = dev->ml_priv;
6007 QETH_CARD_TEXT(card, 2, "fixfeat");
6008 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6009 features &= ~NETIF_F_IP_CSUM;
6010 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6011 features &= ~NETIF_F_IPV6_CSUM;
6012 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6013 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6014 features &= ~NETIF_F_RXCSUM;
6015 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6016 features &= ~NETIF_F_TSO;
6017 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6018 features &= ~NETIF_F_TSO6;
6020 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6023 EXPORT_SYMBOL_GPL(qeth_fix_features);
6025 netdev_features_t qeth_features_check(struct sk_buff *skb,
6026 struct net_device *dev,
6027 netdev_features_t features)
6029 /* GSO segmentation builds skbs with
6030 * a (small) linear part for the headers, and
6031 * page frags for the data.
6032 * Compared to a linear skb, the header-only part consumes an
6033 * additional buffer element. This reduces buffer utilization, and
6034 * hurts throughput. So compress small segments into one element.
6036 if (netif_needs_gso(skb, features)) {
6037 /* match skb_segment(): */
6038 unsigned int doffset = skb->data - skb_mac_header(skb);
6039 unsigned int hsize = skb_shinfo(skb)->gso_size;
6040 unsigned int hroom = skb_headroom(skb);
6042 /* linearize only if resulting skb allocations are order-0: */
6043 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6044 features &= ~NETIF_F_SG;
6047 return vlan_features_check(skb, features);
6049 EXPORT_SYMBOL_GPL(qeth_features_check);
6051 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6053 struct qeth_card *card = dev->ml_priv;
6054 struct qeth_qdio_out_q *queue;
6057 QETH_CARD_TEXT(card, 5, "getstat");
6059 stats->rx_packets = card->stats.rx_packets;
6060 stats->rx_bytes = card->stats.rx_bytes;
6061 stats->rx_errors = card->stats.rx_errors;
6062 stats->rx_dropped = card->stats.rx_dropped;
6063 stats->multicast = card->stats.rx_multicast;
6065 for (i = 0; i < card->qdio.no_out_queues; i++) {
6066 queue = card->qdio.out_qs[i];
6068 stats->tx_packets += queue->stats.tx_packets;
6069 stats->tx_bytes += queue->stats.tx_bytes;
6070 stats->tx_errors += queue->stats.tx_errors;
6071 stats->tx_dropped += queue->stats.tx_dropped;
6074 EXPORT_SYMBOL_GPL(qeth_get_stats64);
6076 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6077 u8 cast_type, struct net_device *sb_dev)
6079 if (cast_type != RTN_UNICAST)
6080 return QETH_IQD_MCAST_TXQ;
6081 return QETH_IQD_MIN_UCAST_TXQ;
6083 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6085 int qeth_open(struct net_device *dev)
6087 struct qeth_card *card = dev->ml_priv;
6089 QETH_CARD_TEXT(card, 4, "qethopen");
6091 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6094 card->data.state = CH_STATE_UP;
6095 netif_tx_start_all_queues(dev);
6097 napi_enable(&card->napi);
6099 napi_schedule(&card->napi);
6100 /* kick-start the NAPI softirq: */
6104 EXPORT_SYMBOL_GPL(qeth_open);
6106 int qeth_stop(struct net_device *dev)
6108 struct qeth_card *card = dev->ml_priv;
6110 QETH_CARD_TEXT(card, 4, "qethstop");
6111 netif_tx_disable(dev);
6112 napi_disable(&card->napi);
6115 EXPORT_SYMBOL_GPL(qeth_stop);
6117 static int __init qeth_core_init(void)
6121 pr_info("loading core functions\n");
6123 rc = qeth_register_dbf_views();
6126 qeth_core_root_dev = root_device_register("qeth");
6127 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6130 qeth_core_header_cache =
6131 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6132 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6134 if (!qeth_core_header_cache) {
6138 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6139 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6140 if (!qeth_qdio_outbuf_cache) {
6144 rc = ccw_driver_register(&qeth_ccw_driver);
6147 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6154 ccw_driver_unregister(&qeth_ccw_driver);
6156 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6158 kmem_cache_destroy(qeth_core_header_cache);
6160 root_device_unregister(qeth_core_root_dev);
6162 qeth_unregister_dbf_views();
6164 pr_err("Initializing the qeth device driver failed\n");
6168 static void __exit qeth_core_exit(void)
6170 qeth_clear_dbf_list();
6171 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6172 ccw_driver_unregister(&qeth_ccw_driver);
6173 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6174 kmem_cache_destroy(qeth_core_header_cache);
6175 root_device_unregister(qeth_core_root_dev);
6176 qeth_unregister_dbf_views();
6177 pr_info("core functions removed\n");
6180 module_init(qeth_core_init);
6181 module_exit(qeth_core_exit);
6182 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6183 MODULE_DESCRIPTION("qeth core functions");
6184 MODULE_LICENSE("GPL");